1. The processing device for the rubber-coated parts for the Bluetooth earphones, which is capable of avoiding forming defects, is characterized by comprising a base (4) and a circular workbench (5), wherein at least three groups of lower dies (6) are fixedly arranged on the workbench (5), the three groups of lower dies (6) are uniformly distributed around the center of the workbench (5), at least two groups of injection molding machines (7) are further arranged on the base (4), the two groups of injection molding machines (7) can simultaneously correspond to the positions of two groups of lower dies (6) of the three groups of lower dies (6), the workbench (5) is rotatably arranged on the base (4), and the lower dies (6) of each group can rotate towards one direction to move to the positions below different injection molding machines (7) so as to complete injection molding of the lower dies (6);

a first upper die (8) and a second upper die (9) are respectively fixed on the two groups of injection molding machines (7), the first upper die (8) is combined with the lower die (6) to complete the first injection molding of the encapsulated part, and the second upper die (9) is combined with the lower die (6) to complete the second injection molding of the encapsulated part;

the utility model discloses a rotary table, including base (4), fixed mounting is used for driving workstation (5) towards same direction intermittent type pivoted motor (10) on base (4), still be equipped with feed mechanism (11) and discharge mechanism (12) on base (4), motor (10) drive feed mechanism (11) and discharge mechanism (12) along with the rotation synchronous operation of workstation (5) through drive mechanism (13).

2. The bluetooth headset molding defect avoiding encapsulated part processing device according to claim 1, wherein at least four sets of supporting legs (14) are fixed to the lower end of the base (4), and an anti-slip seat (15) is fixed to the lower end of each supporting leg (14).

3. The Bluetooth headset molding defect avoiding encapsulated part processing device is characterized in that a fixed column (16) is fixed at the lower end of the workbench (5), the lower end of the fixed column (16) is rotatably connected with the base (4) through a sliding part (17), and the upper end of the fixed column (16) is fixed with the lower surface of the workbench (5) through a reinforcing part (18).

4. The bluetooth headset molding defect avoiding encapsulated part processing device according to claim 3, wherein the sliding member (17) comprises a reinforcing ring (19) fixed at the lower end of the fixing column (16), a plurality of groups of reinforcing rods (20) are fixed on the side wall of the reinforcing ring (19), a sliding sleeve (21) is fixed at the lower end of each reinforcing rod (20), an annular sliding rail (22) is fixed at the upper end of the base (4), and an arc-shaped sliding groove is formed in the lower surface of each sliding sleeve (21), so that the sliding sleeve (21) is slidably arranged on the sliding rail (22).

5. The bluetooth headset molding defect avoiding encapsulated part processing device according to claim 3, wherein the reinforcing member (18) comprises a reinforcing ring (23) fixed on the upper side of the fixing column (16), a plurality of sets of supporting rods (24) are fixed on the periphery side of the reinforcing ring (23), and the upper ends of the supporting rods (24) are fixed on the lower surface of the workbench (5).

6. The bluetooth headset molding defect avoiding encapsulated part processing device according to claim 1, wherein the feeding mechanism (11) and the discharging mechanism (12) are both composed of a transmission belt (25) and a bracket (26) for fixing the transmission belt (25), the lower end of the bracket (26) is fixed at the upper end of the base (4), a transmission wheel (27) is externally fixed on one output shaft of the transmission belt (25), and the transmission mechanism (13) acts on the transmission wheel (27).

7. The bluetooth headset molding defect avoiding encapsulated part processing device according to claim 6, wherein the transmission mechanism (13) comprises a transmission mechanism (13) comprising an extension frame (28) fixedly installed on both sides of the base (4), a transmission drum (29) is rotatably installed on the extension frame (28), the transmission drum (29) is transmitted by a first belt member (30), the transmission drum (29) is transmitted by a second belt member (31) with the transmission wheel (27) of the feeding mechanism (11), and the transmission drum (29) is transmitted by a third belt member (32) with the transmission wheel (27) of the discharging mechanism (12).

8. The bluetooth headset molding defect avoiding encapsulated part processing device according to claim 7, wherein a pinion (33) is fixed on the output shaft of the motor (10), a fixed shaft (34) is fixed on the lower end of the working table (5), a large gear (35) engaged with the pinion (33) is arranged on the fixed shaft (34), a transmission shaft (37) is further engaged on one side of the fixed shaft (34) through a gear set (36), the transmission shaft (37) is rotatably installed on the lower side of the base (4), a driving wheel (38) is fixed on the transmission shaft (37), and the driving wheel (38) acts on the first belt member (30) to drive the first belt member (30) to rotate.

9. The apparatus for manufacturing a bluetooth headset with a molded plastic part avoiding molding defects according to claim 8, wherein the driving wheel (38) is externally provided with teeth, and the first belt member (30) is externally provided with teeth grooves, and the teeth are engaged with the teeth grooves.

10. The bluetooth headset molding part processing device capable of avoiding molding defects according to claim 1, wherein a sliding block (39) is fixed at the lower end of the injection molding machine (7), a sliding groove (40) is formed at the upper end of the base (4), the sliding groove (40) is parallel to the radial direction of the workbench (5), and the sliding block (39) is slidably arranged in the sliding groove (40) so that the injection molding machine (7) can slide outwards along the workbench (5).

Background

The existing finished parts (fig. 7) are respectively composed of the following materials: TPE, 2ABS and 3 magnet. Wherein the magnet is completely encapsulated by the TPE.

The prior art is shaped as follows (fig. 8), where a, b, c are three parts of a set of dies. The part 1 is formed twice, one side of the part 1 formed by combining the components a and b is filled with the part 3 after the completion, and the other side of the part 1 formed by combining the components a and c is used, and the specific manufacturing process is as follows: firstly, a part 2 is placed into a mold b, then the mold a and the mold b are assembled, then the mold a and the mold b are integrally turned over for 180 degrees, then the mold is placed into an injection molding machine to mold a part 1, the mold b is taken out after molding, a part 3 is placed into a groove of the part 1, then a top mold is replaced by a mold c and is combined, then the assembled mold is placed into the other part of the injection molding machine to mold the part 1, and finally the part is taken out after mold opening.

The disadvantages of this approach: in the manufacturing process, the die needs to be turned over and replaced manually, so that the operation actions are multiple, the operation process is complicated, the efficiency is low, and the production line type rapid production is difficult to form.

Disclosure of Invention

Based on this, it is necessary to provide a bluetooth headset that can satisfy the demand for rapid production with avoiding the rubber coating part processingequipment of shaping defect.

A rubber-coated part processing device for a Bluetooth headset and capable of avoiding forming defects comprises a base and a circular workbench, wherein at least three groups of lower dies are fixedly arranged on the workbench, the three groups of lower dies are uniformly distributed around the center of the workbench, at least two groups of injection molding machines are further arranged on the base, the two groups of injection molding machines can simultaneously correspond to two groups of lower dies of the three groups of lower dies, and the workbench is rotatably arranged on the base, so that the lower dies of each group can rotate towards one direction to move to the lower parts of different injection molding machines to complete injection molding of the lower dies;

the two groups of injection molding machines are respectively fixed with a first upper die and a second upper die, the first upper die and the lower die are combined to finish the first injection molding of the encapsulated part, and the second upper die and the lower die are combined to finish the second injection molding of the encapsulated part;

the base is fixedly provided with a motor for driving the workbench to intermittently rotate towards the same direction, the base is further provided with a feeding mechanism and a discharging mechanism, and the motor drives the feeding mechanism and the discharging mechanism to synchronously operate along with the rotation of the workbench through a transmission mechanism.

By adopting the technical scheme: the mould parts which need to be replaced originally are respectively placed on the two injection moulding machines for recycling, so that the manual replacement work is avoided; the three working sections can be simultaneously and circularly carried out, so that the working efficiency can be improved; and through setting up feed mechanism and discharge mechanism, can further accelerate work efficiency.

In one embodiment, at least four groups of supporting legs are fixed at the lower end of the base, and an anti-skid seat is fixed at the lower end of each supporting leg.

By adopting the technical scheme: the stability of this device can be improved, and the antiskid seat can also avoid taking place to slide between this device and the ground moreover.

In one embodiment, a fixed column is fixed at the lower end of the workbench, the lower end of the fixed column is rotatably connected with the base through a sliding part, and the upper end of the fixed column is fixed with the lower surface of the workbench through a reinforcing part.

By adopting the technical scheme: under the effect of slider, can realize the relative slip between workstation and the base, and the reinforcement can play reinforced effect to the mesa of workstation.

In one embodiment, the sliding part includes a reinforcing ring fixed at the lower end of the fixing column, a plurality of groups of reinforcing rods are fixed on the side wall of the reinforcing ring, a sliding sleeve is fixed at the lower end of the reinforcing rods, an annular sliding rail is fixed at the upper end of the base, and an arc-shaped sliding groove is formed in the lower surface of the sliding sleeve, so that the sliding sleeve is slidably arranged on the sliding rail.

By adopting the technical scheme: utilize annular slide rail and sliding sleeve, can realize the relative slip between fixed column and the base, and under the effect of multiunit anchor strut, can play the weight of sharing, reduce the effect of pressure.

In one embodiment, the reinforcing member comprises a reinforcing ring fixed on the upper side of the fixing column, a plurality of groups of supporting rods are fixed on the periphery of the reinforcing ring, and the upper ends of the supporting rods are fixed with the lower surface of the workbench.

By adopting the technical scheme: under the effect of reinforcing ring and bracing piece, can conduct the weight of workstation edge to the lateral wall of fixed column on, can alleviate the pressure of the edge of workstation greatly.

In one embodiment, the feeding mechanism and the discharging mechanism are both composed of a transmission belt and a bracket for fixing the transmission belt, the lower end of the bracket is fixed at the upper end of the base, a transmission wheel is fixed outside one output shaft of the transmission belt, and the transmission mechanism acts on the transmission wheel.

By adopting the technical scheme: utilize the drive wheel can drive driving belt and rotate, realize feed mechanism and discharge mechanism's synchronous rotation, need not to set up extra actuating mechanism, make the maintenance and the manufacturing cost reduction of this device.

In one embodiment, the transmission mechanism comprises a transmission mechanism and an extension frame fixedly installed on two sides of the base, a transmission cylinder is installed on the extension frame in a rotating mode, the transmission cylinder is driven through a first belt piece, the transmission cylinder and a transmission wheel of the feeding mechanism are driven through a second belt piece, and the transmission cylinder and the transmission wheel of the discharging mechanism are driven through a third belt piece.

By adopting the technical scheme: under the effect of conduction barrel, can realize the synchronous operation of feed mechanism and discharge mechanism, form synchronous cooperation with the injection molding machine, make the device more have the wholeness.

In one embodiment, a pinion is fixed on an output shaft of the motor, a fixed shaft is fixed at the lower end of the workbench, a gearwheel meshed with the pinion is arranged on the fixed shaft, a transmission shaft is further meshed with one side of the fixed shaft through a gear set and is rotatably installed on the lower side of the base, a driving wheel is fixed on the transmission shaft and acts on the first belt piece to drive the first belt piece to rotate.

By adopting the technical scheme: utilize pinion drive gear wheel to rotate, can improve the accuracy of this device, secondly to motor simultaneous drive workstation, feed mechanism and discharge mechanism synchronous operation, can make the cooperation degree of whole device higher, the operating personnel's of being convenient for use.

In one embodiment, the drive wheel is externally provided with teeth, and the first belt member is externally provided with gullets, the teeth engaging with the gullets.

By adopting the technical scheme: the condition that takes place to skid between can the surface drive wheel and the first belt spare improves transmission efficiency.

In one embodiment, a sliding block is fixed at the lower end of the injection molding machine, a sliding groove is formed in the upper end of the base, the sliding groove is parallel to the radial direction of the workbench, and the sliding block is arranged in the sliding groove in a sliding mode, so that the injection molding machine can slide outwards along the workbench.

By adopting the technical scheme: the injection molding machine, the first upper die, the second upper die and the lower die can be maintained and replaced conveniently.

The invention has the technical effects and advantages that:

1. when the processing device for the rubber-coated parts for the Bluetooth headset, which avoids the molding defects, is used, simultaneous cycle operation of three working sections can be realized, compared with the traditional mode that the mould parts needing to be replaced are respectively arranged on two injection molding machines for cycle use, the manual replacement work is avoided, and the operation efficiency is improved; and because the mould is the fixed state, conveniently insert mould temperature control system and improve the shaping condition.

2. Bluetooth earphone is with avoiding rubber coating part processingequipment of shaping defect is equipped with feed mechanism and discharge mechanism when using, and feed mechanism and discharge mechanism move towards same direction, and feed mechanism is used for the input part, and discharge mechanism is used for carrying away the finished product part of assembling completion.

3. Bluetooth earphone is with avoiding rubber coating part machining device of shaping defect when using, through setting up drive mechanism, links feed mechanism, discharge mechanism and workstation, can make the cooperation degree of whole device higher, the operating personnel's of being convenient for use.

4. Bluetooth earphone is with avoiding rubber coating part machining device of shaping defect when using, rotates through pinion drive gear wheel, can improve the regulation precision to the workstation, reduces misoperation.

5. Bluetooth earphone is with avoiding rubber coating part machining device of shaping defect when using, through setting up the slider, increases the area of contact with the base, reduces pressure, through setting up the reinforcement, has strengthened the supporting effect to workstation edge, improves structural strength.

Drawings

Fig. 1 is a perspective view of an encapsulated part processing apparatus for avoiding molding defects for a bluetooth headset according to an embodiment.

Fig. 2 is a schematic side view of an apparatus for processing encapsulated parts to avoid molding defects for a bluetooth headset according to an embodiment.

Fig. 3 is a schematic diagram of a transmission mechanism of the encapsulated part processing device for avoiding molding defects for the bluetooth headset shown in fig. 1.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic diagram showing a positional relationship between a lower die and an injection molding machine in the encapsulated part processing apparatus for avoiding molding defects according to the embodiment.

Fig. 6 is a schematic process flow diagram of an apparatus for processing encapsulated parts to avoid molding defects for a bluetooth headset according to an embodiment.

Fig. 7 is a schematic view of a conventional part.

Fig. 8 is a schematic view of a process flow in the prior art.

In the figure:

1TPE, 2ABS, 3 magnets, 4 bases, 5 workbenches, 6 lower dies, 7 injection molding machines, 8 first upper dies, 9 second upper dies, 10 motors, 11 feeding mechanisms, 12 discharging mechanisms, 13 transmission mechanisms, 14 supporting legs, 15 anti-skidding seats, 16 fixed columns, 17 sliding parts, 18 reinforcing parts, 19 reinforcing rings, 20 reinforcing rods, 21 sliding sleeves, 22 sliding rails, 23 reinforcing rings, 24 supporting rods, 25 transmission belts, 26 supports, 27 transmission wheels, 28 extending frames, 29 transmission barrels, 30 first belt parts, 31 second belt parts, 32 third belt parts, 33 pinions, 34 fixed shafts, 35 sliding blocks, 36 gear sets, 37 transmission shafts, 38 driving wheels, 39 and 40 sliding chutes.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention relates to a rubber-coated part processing device for a Bluetooth headset, which avoids forming defects. For example, the device for processing the encapsulated part for avoiding the molding defect for the bluetooth headset comprises a base 4 and a circular workbench 5, wherein at least three groups of lower dies 6 are fixedly arranged on the workbench 5, at least two groups of injection molding machines 7 are further arranged on the base 4, each group of lower dies 6 can rotate towards one direction to move to the position below different injection molding machines 7 to complete injection molding of the lower dies 6, a first upper die 8 and a second upper die 9 are further respectively fixed on the two groups of injection molding machines 7, the first upper die 8 and the lower die 6 can be combined to complete the first injection molding of the encapsulated part, and the second upper die 9 and the lower die 6 can be combined to complete the second injection molding of the encapsulated part;

in order to further improve the processing efficiency, a feeding mechanism 11 and a discharging mechanism 12 are further arranged on the base 4.

The base 4 and the circular workbench 5, for example, in order to improve the stability of the device and prevent the device from sliding on the ground, at least four groups of supporting legs 14 are fixed at the lower end of the base 4, and an anti-sliding seat 15 is fixed at the lower end of each supporting leg 14.

Referring to fig. 5, at least three groups of lower molds 6 are fixedly installed on the workbench 5, the three groups of lower molds 6 are uniformly distributed around the center of the workbench 5, at least two groups of injection molding machines 7 are further installed on the base 4, the two groups of injection molding machines 7 can simultaneously correspond to two groups of lower molds 6 of the three groups of lower molds 6, the workbench 5 is rotatably installed on the base 4, so that each group of lower molds 6 can rotate in one direction to move to the lower parts of different injection molding machines 7 to complete injection molding of the lower molds 6, for example, the central included angle of adjacent lower molds 6 in the three groups of lower molds 6 is 120 degrees;

a first upper die 8 and a second upper die 9 are respectively fixed on the two groups of injection molding machines 7, the first upper die 8 and the lower die 6 are combined to complete the first injection molding of the encapsulated part, and the second upper die 9 and the lower die 6 are combined to complete the second injection molding of the encapsulated part;

referring to fig. 1, in order to facilitate maintenance and replacement of the injection molding machine, the first upper die, the second upper die and the lower die, a sliding block 39 is fixed at the lower end of the injection molding machine 7, a sliding groove 40 is formed at the upper end of the base 4, the sliding groove 40 is parallel to the radial direction of the workbench 5, the sliding block 39 is slidably arranged in the sliding groove 40, so that the injection molding machine 7 can slide outwards along the workbench 5, and the sliding block 39 and the base 4 can be fixed through bolts or limit pins and the like, so as to ensure that the injection molding machine 7 cannot move back and forth during operation.

Referring to fig. 6, a1 is a first upper die 8, a2 is a second upper die 9, b1, b2 and b3 respectively correspond to three groups of lower dies 6, wherein b1, b2 and b3 have the same structure, so that the three sections can be recycled, and when the three sections are used, the three sections are as follows: the bottom of a part 1 is formed in the first working section, the second working section is formed by manually assembling a part 2 and a part 3, the top of the part 1 is formed in the third working section, a finished part is taken out after the third working section is completed, b1, b2 and b3 rotate 120 degrees around the center of a workbench 5 along with the workbench 5 after all the working sections are simultaneously completed, so that b1, b2 and b3 respectively enter the next working section, and all the working sections continuously and repeatedly work, so that the reciprocating cycle operation is realized.

The scheme can realize simultaneous cycle operation of three sections, compared with the traditional mode that the mould part needing to be replaced is respectively arranged on two injection molding machines for cycle use, the manual replacement work is avoided, and the operation efficiency is improved; and because the mould is the fixed state, conveniently insert mould temperature control system and improve the shaping condition.

And a motor 10 for driving the workbench 5 to intermittently rotate towards the same direction is fixedly arranged on the base 4, and the motor 10 can be fixedly arranged on the side wall of one of the supporting legs 14.

Referring to fig. 3, in order to further improve the working efficiency of the apparatus, for example, a feeding mechanism 11 and a discharging mechanism 12 are further disposed on the base 4, the motor 10 drives the feeding mechanism 11 and the discharging mechanism 12 to synchronously operate with the rotation of the worktable 5 through a transmission mechanism 13, so that the feeding mechanism 11 and the discharging mechanism 12 move in the same direction, the feeding mechanism 11 is used for inputting the parts 2 and 3, and the discharging mechanism 12 is used for conveying the assembled finished parts out.

For better conveying effect, the feeding mechanism 11 and the discharging mechanism 12 are positioned on the same straight line, and the feeding mechanism 11 faces the lower die b2 between the first station and the second station, so that the worker can assemble the two pieces 2 and the part 3 towards the bottom of the part 1 formed in the first station.

The lower extreme of workstation 5 is fixed with fixed column 16, the lower extreme of fixed column 16 is rotated through slider 17 and is connected with base 4, slider 17 is including fixing at the reinforcing ring 19 of fixed column 16 lower extreme, be fixed with multiunit reinforcing bar 20 on the lateral wall of reinforcing ring 19, the lower extreme of reinforcing bar 20 is fixed with sliding sleeve 21, the upper end of base 4 is fixed with annular slide rail 22, the lower surface of sliding sleeve 21 has the arc spout, makes sliding sleeve 21 slides and sets up on slide rail 22.

In order to increase the contact area with the upper slide rail 22 of the base 4 and reduce the pressure, the reinforcing rod 20 is inclined such that the upper end is closer to the inside and the lower end is closer to the outside.

The upper end of the fixed column 16 is fixed with the lower surface of the workbench 5 through a reinforcing member 18, the reinforcing member 18 comprises a reinforcing ring 23 fixed on the upper side of the fixed column 16, a plurality of groups of support rods 24 are fixed on the peripheral side of the reinforcing ring 23, and the upper ends of the support rods 24 are fixed with the lower surface of the workbench 5.

In order to enhance the supporting effect on the edge of the worktable 5 and improve the structural strength, the supporting rod 24 adopts an inclined arrangement mode that the upper end is close to the outside and the lower end is close to the inside.

In order to further improve the structural strength among the fixed column 16, the sliding member 17 and the reinforcing member 18, for example, the reinforcing ring 19 in the fixed column 16 and the reinforcing ring 23 in the reinforcing member 18 may be fixed by a plurality of connecting rods, so as to improve the supporting effect of the fixed column 16.

Referring to fig. 2, the feeding mechanism 11 and the discharging mechanism 12 are both composed of a transmission belt 25 and a bracket 26 for fixing the transmission belt 25, the lower end of the bracket 26 is fixed at the upper end of the base 4, a transmission wheel 27 is fixed outside one output shaft of the transmission belt 25, and the transmission mechanism 13 acts on the transmission wheel 27.

Referring to fig. 3, the transmission mechanism 13 includes a transmission mechanism 13 and an extension frame 28 fixedly installed on both sides of the base 4, a transmission drum 29 is rotatably installed on the extension frame 28, the transmission drum 29 is driven by a first belt member 30, the transmission drum 29 and a transmission wheel 27 of the feeding mechanism 11 are driven by a second belt member 31, and the transmission drum 29 and the transmission wheel 27 of the discharging mechanism 12 are driven by a third belt member 32.

The first belt member 30 is disposed at one side of the guide cylinder 29, and the second belt member 31 and the third belt member 32 are disposed at the other side of the guide cylinder 29.

A pinion 33 is fixed on an output shaft of the motor 10, a fixed shaft 34 is fixed at the lower end of the worktable 5, and a large gear 35 meshed with the pinion 33 is arranged on the fixed shaft 34.

Utilize pinion drive gear wheel to rotate, can improve the accuracy of this device, secondly to motor simultaneous drive workstation, feed mechanism and discharge mechanism synchronous operation, can make the cooperation degree of whole device higher, the operating personnel's of being convenient for use.

One side of the fixed shaft 34 is engaged with a transmission shaft 37 through a gear set 36, the gear set 36 comprises two bevel gears which are engaged with each other, the two bevel gears are respectively fixed on the fixed shaft 34 and the transmission shaft 37, the transmission shaft 37 is rotatably installed at the lower side of the base 4, a driving wheel 38 is fixed on the transmission shaft 37, and the driving wheel 38 acts on the first belt member 30 to drive the first belt member 30 to rotate.

For example, in order to improve the transmission efficiency by allowing a slip to occur between the surface driving wheel and the first belt member, teeth are provided on the outside of the driving wheel 38, and teeth are provided on the outside of the first belt member 30, and the teeth are engaged with the teeth.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.