Paper tableware molding heating and shaping device

文档序号:3886 发布日期:2021-09-17 浏览:89次 中文

1. A paper tableware molding, heating and shaping device is characterized in that: the automatic forming machine comprises a molding rack (1), a storage bin (2) arranged on the molding rack (1) and used for storing stacked flaky paper tableware, a material moving mechanical arm (3) horizontally connected to the molding rack (1) in a sliding manner and used for moving the flaky paper tableware in the storage bin (2), and a forming mold (5) arranged on the molding rack (1) and used for heating and forming the flaky paper tableware, wherein the material moving mechanical arm (3) comprises a material moving sucker for adsorbing the flaky paper tableware and a longitudinal material moving assembly (32) for driving the material moving sucker to longitudinally slide, the forming mold (5) comprises a lower mold (52) horizontally connected to the molding rack (1) in a sliding manner, an upper mold (51) vertically connected to the molding rack (1) in a sliding manner, a horizontal mold moving assembly (53) used for driving the lower mold (52) to horizontally slide on the molding rack (1), and a forming mold assembly (5), And a longitudinal mold moving assembly (54) for driving the upper mold (51) to longitudinally slide on the molding frame (1), wherein the horizontal mold moving assembly (53) drives the lower mold (52) to horizontally slide on the molding frame (1) and comprises a shaping station when the lower mold (52) is positioned under the upper mold (51) and a feeding station when the lower mold (52) is positioned on one side of the upper mold (51) and is close to the storage bin (2), a horizontal material moving assembly (4) capable of driving the material moving manipulator (3) to slide on the molding frame (1) is arranged between the molding frame (1) and the material moving manipulator (3), and the horizontal material moving assembly (4) drives the material moving manipulator (3) to horizontally slide on the molding frame (1) and comprises a material taking station when the material moving manipulator (3) is positioned right above the storage bin (2) and a material discharging station when the material moving manipulator (3) is positioned right above the lower mold (52) of the feeding station, And a blanking station when the material moving manipulator (3) is positioned between the material taking station and the material placing station.

2. The paper tableware molding heat setting apparatus as claimed in claim 1, wherein: the material storage bin (2) and the material moving manipulator (3) are provided with two groups and are respectively located on two opposite sides of the shaping mold (5), the lower molds (52) are arranged in the sliding direction of the lower molds (52) on the molding frame (1), the two lower molds (52) are fixedly connected and are located on the feeding station when one lower mold (52) is located on the shaping station, and the horizontal mold moving assembly (53) drives the two lower molds (52) to move simultaneously so that the two lower molds (52) can be switched between the shaping station and the feeding station.

3. The paper tableware molding heat setting apparatus as claimed in claim 1 or 2, wherein: the horizontal mold moving assembly (53) comprises a horizontal mold moving cylinder (531) arranged on the molding frame (1) and used for driving the lower mold (52) to slide and a limit stop lever (532) arranged on the molding frame (1) and positioned at two ends of the sliding stroke of the lower mold (52), wherein the horizontal mold moving cylinder (531) drives the lower mold (52) to be abutted against the limit stop lever (532) when the lower mold (52) slides to the position on the molding frame (1).

4. The paper tableware molding heat setting apparatus as claimed in claim 1, wherein: and a receiving conveyer belt (6) for receiving and conveying the shaped paper tableware is arranged on the molding machine frame (1) corresponding to the blanking station.

5. The paper tableware molding heat setting apparatus as claimed in claim 1, wherein: storage silo (2) are including storage cavity (21), all offer spacing groove (22) that are used for restricting the paper tableware position on the relative both sides wall in storage cavity (21), the depth direction setting along storage cavity (21) of length direction of spacing groove (22), two spacing grooves (22) on the both sides wall correspond the setting and constitute the district of placing that supplies paper quality tableware to place between two spacing grooves (22) in storage cavity (21).

6. The paper tableware molding heat setting apparatus as claimed in claim 5, wherein: the limiting groove (22) is provided with a plurality of groups and is arranged along the length direction of the storage bin (2), the storage cavity (21) is provided with a plurality of groups and is arranged along the width direction of the storage bin (2), the material moving mechanical arm (3) further comprises a sucker mounting rack (31) for supplying material moving suckers to be mounted, and the material moving suckers are provided with a plurality of groups and are arranged corresponding to the placing areas.

7. The paper tableware molding heat setting apparatus as claimed in claim 5 or 6, wherein: the material storage cavity (21) is internally connected with a material containing bottom plate (23) in a longitudinal sliding manner, and the material storage cavity is used for placing paper tableware, and the material storage bin (2) is provided with a lifting driving assembly (24) for driving the material containing bottom plate (23) to gradually rise or quickly fall.

8. The paper tableware molding heat setting apparatus as claimed in claim 7, wherein: the lifting driving assembly (24) comprises a lifting screw (241) which is axially limited and is connected to the molding machine frame (1) in a circumferential rotating mode and a lifting motor (242) which is used for driving the lifting screw (241) to rotate, the lifting screw (241) is in threaded connection with the material containing bottom plate (23), and the lifting motor (242) drives the lifting screw (241) to rotate and can drive the material containing bottom plate (23) to lift and slide.

9. The paper tableware molding heat setting apparatus as claimed in claim 1, wherein: the horizontal material moving assembly (4) comprises a horizontal rack (41) fixed on the molding rack (1), a horizontal motor (42) fixed on the material moving manipulator (3) and a horizontal gear (43) fixed on the output end of the horizontal motor (42), the horizontal gear (43) is meshed with the horizontal rack (41), and the length direction of the horizontal rack (41) is consistent with the sliding direction of the material moving manipulator (3) on the molding rack (1).

10. The paper tableware molding heat setting apparatus as claimed in claim 1, wherein: the longitudinal material moving assembly (32) comprises a longitudinal rack (321) which is longitudinally connected to the material moving manipulator (3) in a sliding mode and used for driving a material moving sucker, a longitudinal motor (322) fixed to the material moving manipulator (3) and a longitudinal gear (323) fixed to the output end of the longitudinal motor (322), and the longitudinal gear (323) is meshed with the longitudinal rack (321).

Background

Tableware means a non-edible tool which directly contacts food when eating, a utensil and an appliance for assisting food to be dispensed or food to be taken, and a plurality of disposable plastic tableware which is bad for the environment are available on the market at present; there are also some hand-held tableware (such as knife, fork, spoon, etc.) made of degradable material, among which the paper tableware has the advantage of environmental protection and is widely used by people.

At present, chinese patent No. CN102700175A discloses a heating and shaping device for paper tableware molding, which comprises a shaping mold, a bottom plate and a heating pipe, wherein the shaping mold is disposed on the bottom plate, and the heating pipe is disposed in the shaping mold. Although the heating pipe is directly arranged in the shaping mould, the heating plate in the prior art is omitted, the process of putting the flaky tableware into the shaping mould is usually manual, and the processing efficiency and the automation degree of equipment are greatly reduced.

Disclosure of Invention

In view of the disadvantages of the prior art, the present invention is directed to a device for molding, heating and setting paper tableware, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a paper tableware molding heat setting device, including moulding the frame, with set up the storage silo that is used for depositing the flaky paper tableware that piles up in moulding the frame, with the horizontal slip connect be used for moving the material manipulator that moves who gets the flaky paper tableware in the storage silo in moulding the frame, and set up the design mould that is used for heating the design with flaky paper tableware in moulding the frame, move the material manipulator including be used for adsorbing flaky paper tableware move the material sucking disc, and be used for driving and move the vertical material subassembly that material sucking disc vertically slided, the design mould is including the horizontal slip connect the lower mould in moulding the frame, with vertically slide connect the last mould in moulding the frame, and be used for driving the horizontal mould subassembly that slides on moulding the frame of lower mould, and be used for driving the vertical mould subassembly that moves that slides on moulding the frame of last mould vertically, horizontal mould subassembly drives the lower mould and including the lower mould when being located under the last mould when moulding the frame horizontal slip, including horizontal mould moves the mould subassembly and move The design station and the lower mould are located mould one side and are close to the material loading station that the storage silo set up, mould the frame and move and be provided with the level that can drive between the material manipulator and move the material subassembly, the level moves the material subassembly and drives and move the material manipulator and get the material station when the frame is gone up the level and slide including moving the material manipulator and being located the storage silo directly over and move the blowing station when the manipulator is located and locate directly over the lower mould of material loading station and move the blanking station when the manipulator is located and get between material station and the blowing station.

The invention is further configured to: the storage silo and move material manipulator and be provided with two sets ofly and be located the relative both sides of design mould respectively, the lower mould is provided with two and arranges the setting along the glide direction of lower mould in the moulding frame, and fixed connection sets up between two lower moulds and another lower mould is located the material loading station when a lower mould is located the design station, and horizontal mould moving assembly can make two lower moulds switch over each other between design station and material loading station when driving two lower moulds and remove simultaneously.

The invention is further configured to: the horizontal mould moving assembly comprises a horizontal mould moving cylinder and limiting stop rods, the horizontal mould moving cylinder is arranged on the moulding rack and used for driving the lower mould to slide, the limiting stop rods are arranged on the moulding rack and located at two ends of the sliding stroke of the lower mould, and the lower mould and the limiting stop rods are abutted when the horizontal mould moving cylinder drives the lower mould to slide in place on the moulding rack.

The invention is further configured to: and a material receiving conveying belt for receiving and conveying the shaped paper tableware is arranged on the molding machine frame corresponding to the blanking station.

The invention is further configured to: the storage silo is including the storage cavity, all offer the spacing groove that is used for restricting the paper tableware position on the relative both sides wall in the storage cavity, the length direction of spacing groove sets up along the direction of depth of storage cavity, two spacing grooves on the wall of storage cavity both sides correspond the setting and constitute the district of placing that supplies paper quality tableware to place between two spacing grooves.

The invention is further configured to: the spacing groove is provided with the multiunit and arranges the setting along the length direction of storage silo, the storage cavity is provided with a plurality ofly and arranges the setting along the width direction of storage silo, move material manipulator still including being used for supplying to move the sucking disc mounting bracket of material sucking disc installation, it is provided with the multiunit and places the district with each and correspond the setting to move the material sucking disc.

The invention is further configured to: the longitudinal sliding connection in the storage cavity is provided with a material containing bottom plate for placing paper tableware, and the storage bin is provided with a lifting driving assembly for driving the material containing bottom plate to gradually rise or quickly fall.

The invention is further configured to: the lifting driving assembly comprises a lifting screw rod and a lifting motor, wherein the lifting screw rod is axially limited to be connected to the molding machine frame in a circumferential rotating mode, the lifting motor is used for driving the lifting screw rod to rotate, the lifting screw rod is in threaded connection with the material containing bottom plate, and the lifting motor can drive the material containing bottom plate to lift and slide in the process of driving the lifting screw rod to rotate.

The invention is further configured to: the horizontal material moving assembly comprises a horizontal rack fixed on the molding rack, a horizontal motor fixed on the material moving manipulator and a horizontal gear fixed on the output end of the horizontal motor, the horizontal gear is meshed with the horizontal rack, and the length direction of the horizontal rack is consistent with the sliding direction of the material moving manipulator on the molding rack.

The invention is further configured to: the longitudinal material moving assembly comprises a longitudinal rack which is longitudinally connected to the material moving manipulator in a sliding mode and used for driving a material moving sucker, a longitudinal motor fixed on the material moving manipulator and a longitudinal gear fixed on the output end of the longitudinal motor, and the longitudinal gear is meshed with the longitudinal rack.

In conclusion, the invention has the following beneficial effects: this device can deposit the slice paper tableware that piles up through the storage silo, and send into the design mould through moving the slice paper tableware in the material manipulator with the storage silo in, rethread design mould is with slice paper tableware heat setting, be favorable to improving the structural strength of paper tableware, the paper tableware shaping of buckling that also can supply the spoon form, consequently the device makes the automatic feed who realizes the paper tableware possible, can effectively improve the machining efficiency and the equipment degree of automation of paper tableware moulding heat setting.

Drawings

FIG. 1 is a schematic perspective view of a thermal shaping device for molding paper tableware;

FIG. 2 is a schematic perspective view of a sizing mold;

FIG. 3 is a schematic perspective view of a material storage bin and a material moving manipulator;

fig. 4 is a schematic perspective view of a partial storage bin.

Reference numerals: 1. a molding frame; 2. a storage bin; 21. a material storage cavity; 22. a limiting groove; 23. a material containing bottom plate; 24. a lift drive assembly; 241. a lifting screw; 242. a lifting motor; 243. a synchronous screw; 3. a material moving manipulator; 31. a suction cup mounting frame; 32. a longitudinal material moving component; 321. a longitudinal rack; 322. a longitudinal motor; 323. a longitudinal gear; 4. a horizontal material moving component; 41. a horizontal rack; 42. a horizontal motor; 43. a horizontal gear; 5. shaping the mold; 51. an upper die; 52. a lower die; 53. a horizontal mold moving assembly; 531. a horizontal mold moving cylinder; 532. a limit stop lever; 54. a longitudinal mold moving assembly; 6. a material receiving conveyer belt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-4, a molding, heating and setting device for paper tableware comprises a molding frame 1, a storage bin 2 arranged on the molding frame 1 and used for storing stacked sheet paper tableware, a material transferring manipulator 3 horizontally connected to the molding frame 1 in a sliding manner and used for transferring the sheet paper tableware in the storage bin 2, and a setting mold 5 arranged on the molding frame 1 and used for heating and setting the sheet paper tableware, wherein the material transferring manipulator 3 comprises a material transferring suction cup used for adsorbing the sheet paper tableware and a longitudinal material transferring assembly 32 used for driving the material transferring suction cup to longitudinally slide, the material transferring suction cup is a known technology, and is generally designed and can be communicated with a negative pressure device used for adsorbing or releasing the sheet paper tableware.

The shaping mold 5 comprises a lower mold 52 horizontally connected to the molding frame 1 in a sliding manner, an upper mold 51 longitudinally connected to the molding frame 1 in a sliding manner, a horizontal mold moving assembly 53 for driving the lower mold 52 to horizontally slide on the molding frame 1, and a longitudinal mold moving assembly 54 for driving the upper mold 51 to longitudinally slide on the molding frame 1, wherein the upper mold 51 and the lower mold 52 are both known in the prior art and are designed in a common way, and the opposite surfaces of the upper mold 51 and the lower mold 52 can be respectively provided with a male mold structure and a female mold structure which are matched with each other, and a heating component capable of heating the mold is arranged in the shaping mold, so that paper tableware can be heated and shaped.

The horizontal die moving assembly 53 drives the lower die 52 to horizontally slide on the molding frame 1, and comprises a shaping station when the lower die 52 is located under the upper die 51 and a feeding station when the lower die 52 is located on one side of the upper die 51 and is close to the storage bin 2, a horizontal material moving assembly 4 capable of driving the material moving manipulator 3 to slide on the molding frame 1 is arranged between the molding frame 1 and the material moving manipulator 3, the horizontal material moving assembly 4 drives the material moving manipulator 3 to horizontally slide on the molding frame 1 and comprises a material taking station when the material moving manipulator 3 is located over the storage bin 2 and a material discharging station when the material moving manipulator 3 is located over the lower die 52 of the material taking station, and a material discharging station when the material moving manipulator 3 is located between the material taking station and the material discharging station.

This device can deposit the slice paper tableware that piles up through storage silo 2 to in sending into design mould 5 through moving material manipulator 3 with the slice paper tableware in the storage silo 2, rethread design mould 5 is stereotyped with slice paper tableware heating, be favorable to improving the structural strength of paper tableware, the shaping of buckling of paper tableware that also can supply the spoon form, consequently, the device makes the automatic feed who realizes the paper tableware possible, can effectively improve the machining efficiency and the equipment degree of automation of paper tableware moulding heat setting.

And wherein the horizontal material moving component 4 can drive the material moving manipulator 3 to slide on the molding frame 1 in a reciprocating manner, when the material moving manipulator 3 is positioned at the material taking station, the material moving sucker is positioned right above the storage bin 2, the longitudinal material moving component 32 can drive the material moving sucker to slide longitudinally, so that the flaky paper tableware can be conveniently moved out of the storage bin 2, then the material moving manipulator 3 can place the moved flaky paper tableware on the lower die 52 positioned at the material feeding station when sliding to the material discharging station, the horizontal die moving component 53 slides the lower die 52 to the shaping station, the longitudinal die moving component 54 drives the upper die 51 to cooperate with the lower die 52 to complete the heating shaping operation, after completing one operation, the longitudinal die moving component 54 drives the upper die 51 to be far away from the lower die 52, the horizontal die moving component 53 slides the lower die 52 to the material feeding station, the horizontal material moving component 4 drives the material moving manipulator 3 to firstly take the formed paper tableware out of the lower die 52, and then the material moving manipulator 3 slides to a blanking station, the formed paper tableware is blanked, and the feeding step of the sheet paper tableware is carried out.

The storage bin 2 and the material moving manipulator 3 are provided with two groups and are respectively located on two opposite sides of the shaping mold 5, the lower molds 52 are provided with two groups and are arranged along the sliding direction of the lower molds 52 on the molding frame 1, the two lower molds 52 are fixedly connected and are arranged, when one lower mold 52 is located at the shaping station, the other lower mold 52 is located at the feeding station, and the horizontal mold moving assembly 53 drives the two lower molds 52 to move simultaneously, so that the two lower molds 52 can be switched between the shaping station and the feeding station. This design makes to go up mould 51 and cooperate a lower mould 52 when heating the design operation to a set of slice paper tableware, has another lower mould 52 to be located the material loading station all the time, can enough supply to move material manipulator 3 and remove the fashioned paper tableware and the blanking, can also realize moving material manipulator 3 and move and get the slice paper tableware material loading of treating processing, consequently can effectively combine processing and unloading, is favorable to further improving the machining efficiency that paper tableware moulded heat design.

The horizontal mold moving assembly 53 comprises a horizontal mold moving cylinder 531 arranged on the molding frame 1 and used for driving the lower mold 52 to slide, and limit stop rods 532 arranged on the molding frame 1 and located at two ends of the sliding stroke of the lower mold 52, wherein the lower mold 52 is abutted to the limit stop rods 532 when the horizontal mold moving cylinder 531 drives the lower mold 52 to slide on the molding frame 1 to move to the position. The horizontal die-moving cylinder 531 can drive the two lower dies 52 to slide in place on the molding frame 1 quickly, so that the working efficiency of the horizontal die-moving assembly 53 is improved, and the accuracy of the sliding in place of the lower dies 52 can be improved by arranging the limit stop lever 532; in addition, the limiting stop lever 532 can be screwed on the molding frame 1, and the limiting stop lever 532 can be screwed with a locking nut which can lock the limiting stop lever on the molding frame 1, so that the limiting position of the lower die 52 can be regulated and controlled by the limiting stop lever 532, and the use flexibility and the application range of the horizontal die moving assembly 53 can be improved.

A receiving conveyer belt 6 for receiving and conveying shaped paper tableware is arranged on the molding frame 1 corresponding to the blanking station. Receive material conveyer belt 6 and be located the blanking station, can conveniently carry fashioned paper tableware to device one side to be convenient for realize the collection to paper tableware.

The storage bin 2 comprises a storage cavity 21, limiting grooves 22 used for limiting the positions of paper tableware are formed in two opposite side walls in the storage cavity 21, the length direction of the limiting grooves 22 is arranged along the depth direction of the storage cavity 21, the two limiting grooves 22 in the two side walls in the storage cavity 21 are correspondingly arranged, and a placing area for placing the paper tableware is formed between the two limiting grooves 22. Flaky paper tableware is rectangular form like sword, fork, spoon, and its both ends can imbed two spacing grooves 22 respectively in to effectively improve flaky paper tableware's location accuracy, make the processing position that corresponds on the mould correspond the setting with placing the district, conveniently move material manipulator 3 and place flaky paper tableware accuracy and put in place.

The spacing groove 22 is provided with the multiunit and arranges the setting along the length direction of storage silo 2, and the storage cavity 21 is provided with a plurality ofly and arranges the setting along the width direction of storage silo 2, and the manipulator 3 that moves is provided with the multiunit and corresponds the setting with each district of placing including being used for supplying to move the sucking disc mounting bracket 31 of material sucking disc installation, moves the material sucking disc. This design makes to place the district and is provided with a plurality ofly for moving material manipulator 3 and can remove a plurality of slice paper tableware simultaneously to the station of adding, consequently go up and to correspond on mould 51 and the lower mould 52 and be provided with a plurality of stations of adding, be favorable to further improving the machining efficiency that paper tableware moulded heat and stereotyped.

The storage cavity 21 is connected with a material containing bottom plate 23 for placing paper tableware in a longitudinal sliding manner, and the storage bin 2 is provided with a lifting driving assembly 24 for driving the material containing bottom plate 23 to gradually rise or quickly fall. Flourishing material bottom plate 23 is located storage cavity 21 bottom, can lift the flaky paper tableware that piles up to rising when lift drive assembly 24 drives flourishing material bottom plate 23 and upwards slides, make things convenient for material moving manipulator 3 to shift out flaky paper tableware from storage silo 2 fast, and lift drive assembly 24 can move along with material moving manipulator 3 and get flaky paper tableware and progressively promote flourishing material bottom plate 23, make the flaky paper tableware that is located the top can be located same height all the time, conveniently move material moving manipulator 3 and move and get.

The lifting driving assembly 24 comprises a lifting screw 241 axially limited to be circumferentially and rotatably connected to the molding frame 1 and a lifting motor 242 for driving the lifting screw 241 to rotate, the lifting screw 241 is in threaded connection with the material containing bottom plate 23, and the lifting motor 242 can drive the material containing bottom plate 23 to lift and slide in the process of driving the lifting screw 241 to rotate. The material containing bottom plate 23 is longitudinally connected to the molding machine frame 1 in a sliding manner, and the material containing bottom plate 23 can be driven to lift and slide when the lifting motor 242 drives the lifting screw 241 to rotate.

In addition, two lifting screws 241 can be arranged and are respectively screwed at two ends of the material containing bottom plate 23, so that the sliding stability of the material containing bottom plate 23 can be improved, and the two lifting screws 241 can be synchronously connected with a synchronous screw 243 in a transmission manner, so that the synchronous rotation of the two lifting screws 241 can be conveniently realized.

The horizontal material moving assembly 4 comprises a horizontal rack 41 fixed on the molding frame 1, a horizontal motor 42 fixed on the material moving manipulator 3 and a horizontal gear 43 fixed on the output end of the horizontal motor 42, wherein the horizontal gear 43 is meshed with the horizontal rack 41, and the length direction of the horizontal rack 41 is consistent with the sliding direction of the material moving manipulator 3 on the molding frame 1. Horizontal motor 42 drives horizontal gear 43 pivoted in-process can drive and move material manipulator 3 and reciprocate to slide along the length direction of horizontal rack 41 in moulding frame 1, conveniently realize driving material manipulator 3 and slide to getting material station or blowing station or blanking station, and simple structure easily implements, horizontal motor 42 can select servo motor or step motor, the horizontal gear 43 and the horizontal rack 41 of cooperation meshing can drive and move material manipulator 3 and accurately slide to the target in place, also can increase the location accuracy that the configuration location sensor improves material manipulator 3.

The longitudinal material moving assembly 32 comprises a longitudinal rack 321 which is longitudinally connected to the material moving manipulator 3 in a sliding manner and used for driving a material moving sucker, a longitudinal motor 322 fixed on the material moving manipulator 3, and a longitudinal gear 323 fixed on the output end of the longitudinal motor 322, wherein the longitudinal gear 323 is meshed with the longitudinal rack 321. The longitudinal motor 322 can drive the longitudinal rack 321 to longitudinally slide on the material moving manipulator 3 in a reciprocating manner in the process of driving the longitudinal gear 323 to rotate, so that the material moving sucker can be conveniently driven to move up and down, the structure is simple and easy to implement, the longitudinal motor 322 can be a servo motor or a stepping motor, and the longitudinal gear 323 and the longitudinal rack 321 which are meshed in a matching manner can drive the material moving sucker to accurately slide in place; in addition, the suction cup mounting rack 31 can be mounted at the bottom end of the longitudinal rack 321, so that the longitudinal material moving assembly 32 can simultaneously drive each material moving suction cup to move.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

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