1. A filling and packaging equipment comprises a base (1), and is characterized in that: the top end of the base (1) is fixedly connected with a longitudinal mounting frame (2), the top end of the longitudinal mounting frame (2) is fixedly connected with a storage tank (3), the inner wall of the storage tank (3) is fixedly connected with a mounting plate (4), the top end of the mounting plate (4) is fixedly connected with a driving motor (5), the top end of the mounting plate (4) is provided with a round hole, an output shaft of the driving motor (5) penetrates through the mounting plate (4) and is fixedly connected with a rotating shaft (6), the outer side of the rotating shaft (6) is fixedly connected with a helical blade (7), the bottom end of the storage tank (3) and the top end of the longitudinal mounting frame (2) are both provided with longitudinal mounting holes, the inner wall of the longitudinal mounting holes is fixedly sleeved with a guide pipe (8), the top end of the base (1) is provided with a weighing mechanism, and the weighing mechanism comprises a balance plate (11) and weights (14), two mount pads (9) of top symmetry fixedly connected with of base (1), two one side fixedly connected with transverse bar (10) of mount pad (9), balance plate (11) have been cup jointed in the outside of transverse bar (10), the top of base (1) is provided with buffer gear, buffer gear includes buffer seat (21), buffer spring (19) and guide bar (18), the top of base (1) is provided with stop gear, stop gear includes fixed box (22), rope (23) and set screw (24).

2. The filling and packaging apparatus according to claim 1, wherein: the outer side of the transverse rod (10) is provided with external threads, and the outer side threads of the transverse rod (10) are sleeved with a limiting block (12).

3. The filling and packaging apparatus according to claim 1, wherein: the top of balance plate (11) is fixedly connected with heavy burden box (13) and places box (15) respectively, the inside of heavy burden box (13) is provided with weight (14).

4. The filling and packaging apparatus according to claim 1, wherein: the top end of the base (1) is provided with a circular mounting hole, and a motor switch (16) is fixedly embedded in the circular mounting hole.

5. The filling and packaging apparatus according to claim 1, wherein: two ladder grooves (17) have been seted up to the top symmetry of base (1), the inside interlude of ladder groove (17) is connected with guide bar (18), the top fixedly connected with buffer seat (21) of guide bar (18), the outside of buffer seat (21) and the inner wall sliding connection of ladder groove (17).

6. The filling and packaging apparatus according to claim 1, wherein: the outside of guide bar (18) is provided with the external screw thread, dog (20) have been cup jointed to the outside screw thread of guide bar (18), buffer spring (19) have been cup jointed in the outside of guide bar (18), the bottom fixed connection of the top of buffer spring (19) and buffer seat (21), the bottom of buffer spring (19) and the inner wall fixed connection in ladder groove (17).

7. The filling and packaging apparatus according to claim 1, wherein: the fixed box (22) of positive fixedly connected with of balance plate (11), the perforation has been seted up on the top of fixed box (22), fenestrate inside interlude is connected with rope (23), the bottom of rope (23) and the top fixed connection of base (1), horizontal screw hole has been seted up in the front of fixed box (22), horizontal screw hole, the inside screw thread interlude of horizontal screw hole is connected with set screw (24).

8. The filling and packaging apparatus according to claim 1, wherein: the front and the back of the balance plate (11) are fixedly connected with clamping rods (26), and the top end of the base (1) is symmetrically and fixedly connected with two clamping seats (25) corresponding to the clamping rods (26).

9. The filling and packaging apparatus according to claim 1, wherein: the fixed ring piece (27) that has cup jointed in bottom of pivot (6), the outside of pivot (6) has cup jointed shuttle-shaped piece (28), the annular has been seted up to the inner wall of shuttle-shaped piece (28), the outside of ring piece (27) and the inner wall sliding connection of annular, the outside symmetry fixedly connected with two stabilizer bar (29) of shuttle-shaped piece (28), the one end of stabilizer bar (29) and the inner wall fixed connection of passage (8).

10. A filling method of filling and packaging equipment is characterized in that: the method comprises the following steps:

step 1: the brown sugar is poured into the storage tank (3) by an operator, the operator rotates the positioning screw (24) anticlockwise to a certain position, the operator penetrates the rope (23) from the bottom end of the through hole and penetrates out of the top end of the fixing box (22) to a certain position, and the operator rotates the positioning screw (24) clockwise until one end of the positioning screw (24) is in contact with the rope (23), so that the rope (23) is fixed by the positioning screw (24);

step 2: an operator places a weight (14) with proper weight in the loading box (13), presses down one end of the balance plate (11) close to the placing box (15) until the clamping rod (26) is clamped in the clamping seat (25), presses down the motor switch (16) at the bottom end of the balance plate (11), so that the motor switch (16) is in an open circuit state, and the operator electrically connects the motor switch (16) with an external power supply;

and step 3: an operator places an empty bag in the placing box (15), holds the bag with one hand, and lifts the balance plate (11) upwards with the other hand until the clamping rod (26) is separated from the clamping seat (25), and meanwhile, the bottom end of the balance plate (11) is separated from the motor switch (16), so that the motor switch (16) is in a closed circuit state, and the driving motor (5) is electrified to work;

and 4, step 4: brown sugar flows into the packaging bag through the material guide pipe (8), one side of the balance plate (11) close to the placing box (15) moves downwards along with the increase of the brown sugar in the packaging bag, the bottom end of the balance plate (11) is in contact with the top end of the buffer seat (21) and pushes the buffer seat (21) to move downwards, and when the bottom end of the balance plate (11) is in contact with the top end of the motor switch (16), the motor switch (16) is disconnected to enable the driving motor (5) to be powered off;

and 5: an operator presses the balance plate (11) downwards by one hand until the clamping rod (26) is clamped into the clamping seat (25), and the other hand of the operator takes down the packaging bag filled with the brown sugar.

Background

The brown sugar refers to sugarcane finished sugar with honey, the sugarcane is juiced and concentrated to form the honey, the brown sugar has the effects of tonifying qi and nourishing blood, tonifying spleen and warming stomach, dispelling wind and cold, and promoting blood circulation to remove blood stasis, and for the convenience of selling, the brown sugar generally needs to be filled to be divided into small packages.

In small-size supermarket, the manual filling is generally adopted in the filling, places on the title after the in-process of filling needs to be good with the brown sugar dress, weighs repeatedly again, does not have better convenience when the operation, and its speed of filling packing is slower.

Disclosure of Invention

The present invention is directed to a filling and packaging apparatus and a filling method thereof.

The invention realizes the purpose by the following technical scheme, and the filling and packaging equipment comprises a base, wherein the top end of the base is fixedly connected with a longitudinal mounting rack, the top end of the longitudinal mounting rack is fixedly connected with a material storage tank, the inner wall of the material storage tank is fixedly connected with a mounting plate, the top end of the mounting plate is fixedly connected with a driving motor, the top end of the mounting plate is provided with a round hole, an output shaft of the driving motor penetrates through the mounting plate and is fixedly connected with a rotating shaft, the outer side of the rotating shaft is fixedly connected with a helical blade, the bottom end of the material storage tank and the top end of the longitudinal mounting rack are both provided with longitudinal mounting holes, the inner wall of each longitudinal mounting hole is fixedly sleeved with a material guide pipe, the top end of the base is provided with a weighing mechanism, the weighing mechanism comprises a balance plate and weights, the top end of the base is symmetrically and fixedly connected with two mounting seats, one side of the two mounting seats is fixedly connected with a transverse rod, the balance plate is sleeved on the outer side of the transverse rod, a buffer mechanism is arranged at the top end of the base and comprises a buffer seat, a buffer spring and a guide rod, a limiting mechanism is arranged at the top end of the base and comprises a fixing box, a rope and a positioning screw.

Preferably, the outer side of the transverse rod is provided with an external thread, and the outer side of the transverse rod is sleeved with a limiting block in a threaded manner.

Preferably, the top of balance plate is fixedly connected with heavy burden box and places the box respectively, the inside of heavy burden box is provided with the weight.

Preferably, the top end of the base is provided with a circular mounting hole, and a motor switch is fixedly embedded in the circular mounting hole.

Preferably, two ladder grooves have been seted up to the top symmetry of base, the inside interlude in ladder groove is connected with the guide bar, the top fixedly connected with buffer seat of guide bar, the outside of buffer seat and the inner wall sliding connection in ladder groove.

Preferably, the outside of guide bar is provided with the external screw thread, the dog has been cup jointed to the outside screw thread of guide bar, buffer spring has been cup jointed in the outside of guide bar, buffer spring's top and the bottom fixed connection of buffer seat, buffer spring's bottom and the inner wall fixed connection in ladder groove.

Preferably, the fixed box of front fixedly connected with of balancing plate, the perforation has been seted up on the top of fixed box, the inside interlude of perforation is connected with the rope, the bottom of rope and the top fixed connection of base, horizontal screw hole has been seted up in the front of fixed box, horizontal screw hole, the inside screw thread interlude of horizontal screw hole is connected with set screw.

Preferably, the front and the back of the balance plate are fixedly connected with clamping rods, and the top end of the base is symmetrically and fixedly connected with two clamping seats corresponding to the clamping rods.

Preferably, the bottom of the rotating shaft is fixedly sleeved with a ring block, the outer side of the rotating shaft is sleeved with a shuttle-shaped block, an annular groove is formed in the inner wall of the shuttle-shaped block, the outer side of the ring block is connected with the inner wall of the annular groove in a sliding manner, the outer side of the shuttle-shaped block is symmetrically and fixedly connected with two transverse stabilizer bars, and one end of each transverse stabilizer bar is fixedly connected with the inner wall of the material guide pipe.

A filling method of filling and packaging equipment comprises the following steps:

step 1: the operator pours the brown sugar into the inside of storage tank, and the operator anticlockwise rotates set screw to a certain position, and the operator penetrates the rope from the bottom of perforation to wear out to certain position from the top of fixed box, and the operator clockwise rotates set screw, until one end of set screw and rope contact, in order to realize the fixed of set screw to the rope;

step 2: an operator places weights with proper weight inside the loading box, presses one end, close to the placing box, of the balance plate downwards until the clamping rod is clamped inside the clamping seat, presses the motor switch at the bottom end of the balance plate, enables the motor switch to be in an open circuit state, and electrically connects the motor switch with an external power supply;

and step 3: an operator places the empty packing bag in the placing box, holds the packing bag with one hand, and lifts the balance plate upwards with the other hand until the clamping rod is separated from the clamping seat, and meanwhile, the bottom end of the balance plate is separated from the motor switch, so that the motor switch is in a closed circuit state, and the motor is driven to work in a power-on mode;

and 4, step 4: the brown sugar flows into the packaging bag through the material guide pipe, one side of the balance plate close to the placing box moves downwards along with the increase of the brown sugar in the packaging bag, the bottom end of the balance plate is in contact with the top end of the buffer seat and pushes the buffer seat to move downwards, and when the bottom end of the balance plate is in contact with the top end of the motor switch, the motor switch is switched off to enable the driving motor to be powered off;

and 5: the operator presses the balance plate downwards with one hand until the clamping rod is clamped into the clamping seat, and the other hand of the operator takes down the packaging bag filled with the brown sugar.

The invention has the beneficial effects that: firstly, through the design of the weighing mechanism, an operator places weights with proper weight in the loading box, presses the end of the balance plate close to the placing box downwards until the clamping rod is clamped in the clamping seat, presses the motor switch at the bottom end of the balance plate, so that the motor switch is in an open circuit state, an operator electrically connects the motor switch with an external power supply, the brown sugar flows into the interior of the packaging bag through the material guide pipe, one side of the balance plate close to the placing box moves downwards along with the increase of the brown sugar in the packaging bag, the bottom end of the balance plate is contacted with the top end of the buffer seat and pushes the buffer seat to move downwards, when the bottom end of the balance plate contacts the top end of the motor switch, the motor switch is disconnected to cut off the power of the driving motor, when the brown sugar in the packaging bag reaches a certain amount, the driving motor can be automatically closed to realize quantitative brown sugar filling.

Secondly, through the design of the buffer mechanism, when the balance plate begins to incline, the bottom end of the balance plate is in contact with the top end of the buffer seat and pushes the buffer seat to move downwards, meanwhile, the buffer seat pushes the buffer spring to move and compresses the buffer spring, so that the balance plate is buffered, the bottom end of the balance plate is in contact with the top end of the motor switch, the balance plate is buffered through the buffer seat and the buffer spring, and the motor switch is prevented from being damaged due to the fact that the balance plate is too fast.

Thirdly, through the design of the limiting mechanism, an operator places the empty packing bag in the placing box, holds the packing bag with one hand, lifts the balance plate upwards with the other hand until the clamping rod is separated from the clamping seat, at the moment, one side of the balance plate close to the placing box moves upwards, the balance plate drives the fixing box to move upwards to a certain height, and then the rope is tightened, so that the further lifting of the balance plate is limited, and the maximum lifting height of the balance plate is controlled.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of a material storage tank according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 2 at C according to the present invention;

FIG. 6 is an enlarged view of the structure shown in FIG. 2.

In the figure: 1. a base; 2. a longitudinal mounting frame; 3. a material storage tank; 4. mounting a plate; 5. a drive motor; 6. a rotating shaft; 7. a helical blade; 8. a material guide pipe; 9. a mounting seat; 10. a transverse bar; 11. a balance plate; 12. a limiting block; 13. a weight box; 14. a weight; 15. placing the box; 16. a motor switch; 17. a stepped groove; 18. a guide bar; 19. a buffer spring; 20. a stopper; 21. a buffer seat; 22. a fixing box; 23. a rope; 24. a set screw; 25. a card holder; 26. a clamping rod; 27. a ring block; 28. a shuttle block; 29. a stabilizer bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a filling and packaging device comprises a base 1, a longitudinal mounting frame 2 is fixedly connected to the top end of the base 1, the longitudinal mounting frame 2 is of an L-shaped structure, a material storage tank 3 is fixedly connected to the top end of the longitudinal mounting frame 2, a mounting plate 4 is fixedly connected to the inner wall of the material storage tank 3, a driving motor 5 is fixedly connected to the top end of the mounting plate 4, the mounting plate 4 is used for bearing the driving motor 5, a round hole is formed in the top end of the mounting plate 4, an output shaft of the driving motor 5 penetrates through the mounting plate 4 and is fixedly connected with a rotating shaft 6, a helical blade 7 is fixedly connected to the outer side of the rotating shaft 6, longitudinal mounting holes are formed in the bottom end of the material storage tank 3 and the top end of the longitudinal mounting frame 2, a material guide pipe 8 is fixedly sleeved on the inner wall of the longitudinal mounting hole, the material guide pipe 8 is of a cylindrical structure, a weighing mechanism is arranged on the top end of the base 1, and comprises a balance plate 11 and a weight 14, two mount pads 9 of the top symmetry fixedly connected with of base 1, one side fixedly connected with transverse bar 10 of two mount pads 9, balance plate 11 has been cup jointed in the outside of transverse bar 10, and the top of base 1 is provided with buffer gear, and buffer gear includes buffer seat 21, buffer spring 19 and guide bar 18, and the top of base 1 is provided with stop gear, and stop gear includes fixed box 22, rope 23 and set screw 24.

As a technical optimization scheme of the invention, the outer side of the transverse rod 10 is provided with external threads, the outer side of the transverse rod 10 is sleeved with the limiting block 12 through the threads, an operator can adjust the position of the limiting block 12 according to the use condition, and the limiting block 12 is used for limiting the transverse position of the balance plate 11.

As a technical optimization scheme of the invention, the top end of the balance plate 11 is fixedly connected with a load box 13 and a placing box 15 respectively, a weight 14 is arranged in the load box 13, and the weight 14 is directly placed in the load box 13.

As a technical optimization scheme of the present invention, a circular mounting hole is formed at the top end of the base 1, a motor switch 16 is fixedly embedded inside the circular mounting hole, when the bottom end of the balance plate 11 presses the motor switch 16, the motor switch 16 is in an open circuit state at this time, the driving motor 5 is in an open circuit state, when the bottom end of the balance plate 11 is separated from the motor switch 16, the motor switch 16 is in a closed circuit state at this time, the driving motor 5 is powered on to work, referring to fig. 2, the balance plate 11 is in a horizontal state, and the top end of the motor switch 16 is in contact with the bottom end of the balance plate 11.

As a technical optimization scheme of the invention, two stepped grooves 17 are symmetrically formed in the top end of the base 1, a guide rod 18 is inserted and connected in the stepped grooves 17, a buffer seat 21 is fixedly connected to the top end of the guide rod 18, the buffer seat 21 is made of rubber, and the outer side of the buffer seat 21 is in sliding connection with the inner wall of the stepped grooves 17.

As a technical optimization scheme of the invention, external threads are arranged on the outer side of the guide rod 18, the stop block 20 is sleeved on the outer side of the guide rod 18 in a threaded manner, the buffer spring 19 is sleeved on the outer side of the guide rod 18, the buffer spring 19 is in a compressed state in a standing state, the top end of the buffer spring 19 is fixedly connected with the bottom end of the buffer seat 21, the bottom end of the buffer spring 19 is fixedly connected with the inner wall of the stepped groove 17, the balance plate 11 is buffered through the buffer seat 21 and the buffer spring 19, and therefore the motor switch 16 is prevented from being damaged due to the fact that the balance plate 11 is too fast.

As a technical optimization scheme of the invention, a fixed box 22 is fixedly connected to the front surface of the balance plate 11, a through hole is formed in the top end of the fixed box 22, a rope 23 is inserted and connected into the through hole, the bottom end of the rope 23 is fixedly connected to the top end of the base 1, a transverse threaded hole is formed in the front surface of the fixed box 22, a positioning screw 24 is inserted and connected to the inner thread of the transverse threaded hole, when the side, close to the placing box 15, of the balance plate 11 moves upwards, the balance plate 11 drives the fixed box 22 to move upwards to a certain height, the rope 23 is tightened, further lifting of the balance plate 11 is limited, and the maximum lifting height of the balance plate 11 is controlled.

As a technical optimization scheme of the invention, the front and the back of the balance plate 11 are both fixedly connected with clamping rods 26, and the top end of the base 1 is symmetrically and fixedly connected with two clamping seats 25 corresponding to the clamping rods 26.

As a technical optimization scheme of the invention, a ring block 27 is fixedly sleeved at the bottom of a rotating shaft 6, a shuttle-shaped block 28 is sleeved at the outer side of the rotating shaft 6, an annular groove is formed in the inner wall of the shuttle-shaped block 28, the outer side of the ring block 27 is in sliding connection with the inner wall of the annular groove, two transverse stabilizer bars 29 are symmetrically and fixedly connected to the outer side of the shuttle-shaped block 28, one end of each transverse stabilizer bar 29 is fixedly connected with the inner wall of a material guide pipe 8, and the stability of the rotating shaft 6 is maintained through the design of the transverse stabilizer bars 29 and the shuttle-shaped block 28.

A filling method of filling and packaging equipment comprises the following steps:

step 1: the operator pours the brown sugar into the storage tank 3, the operator rotates the positioning screw 24 anticlockwise to a certain position, the operator penetrates the rope 23 from the bottom end of the through hole and penetrates out from the top end of the fixing box 22 to a certain position, and the operator rotates the positioning screw 24 clockwise until one end of the positioning screw 24 contacts with the rope 23, so that the rope 23 is fixed by the positioning screw 24;

step 2: an operator places a weight 14 with proper weight inside the load bearing box 13, presses down one end of the balance plate 11 close to the placing box 15 until the clamping rod 26 is clamped inside the clamping seat 25, and presses the motor switch 16 at the bottom end of the balance plate 11, so that the motor switch 16 is in an open circuit state, and the operator electrically connects the motor switch 16 with an external power supply;

and step 3: an operator puts an empty bag in the placing box 15, holds the bag with one hand, and lifts the balance plate 11 with the other hand upwards until the clamping rod 26 is separated from the clamping seat 25, and meanwhile, the bottom end of the balance plate 11 is separated from the motor switch 16, so that the motor switch 16 is in a closed circuit state, and the driving motor 5 is electrified to work;

and 4, step 4: the brown sugar flows into the packaging bag through the material guide pipe 8, one side of the balance plate 11 close to the placing box 15 moves downwards along with the increase of the brown sugar in the packaging bag, the bottom end of the balance plate 11 is in contact with the top end of the buffer seat 21 and pushes the buffer seat 21 to move downwards, and when the bottom end of the balance plate 11 is in contact with the top end of the motor switch 16, the motor switch 16 is switched off to cut off the power of the driving motor 5;

and 5: the operator pushes the balance plate 11 downwards with one hand until the clamping rod 26 is clamped into the clamping seat 25, and the operator takes down the packaging bag filled with the brown sugar with the other hand.

When the brown sugar fixing device is used, an operator pours brown sugar into the storage tank 3, rotates the positioning screw 24 anticlockwise to a certain position, penetrates the rope 23 from the bottom end of the through hole and penetrates out of the top end of the fixing box 22 to a certain position, and rotates the positioning screw 24 clockwise until one end of the positioning screw 24 is in contact with the rope 23, so that the rope 23 is fixed by the positioning screw 24.

The operator places weight 14 of suitable weight in the inside of heavy burden box 13, and the operator presses down balance plate 11 near the one end of placing box 15 until kelly 26 joint in the inside of cassette 25, and motor switch 16 is pushed down to the bottom of balance plate 11 for motor switch 16 is in the open circuit state, and the operator is with motor switch 16 and external power source electric connection.

The operator puts the empty bag inside the placing box 15 and holds the bag with one hand, and lifts the balance board 11 with the other hand upward until the clamping rod 26 is separated from the clamping seat 25, and at the same time, the bottom end of the balance board 11 is separated from the motor switch 16, so that the motor switch 16 is in a closed state, and the driving motor 5 is electrified to work.

5 output shafts of driving motor rotate and drive pivot 6 and rotate, pivot 6 drives helical blade 7 and rotates, helical blade 7 promotes the inside removal of brown sugar to guide tube 8, the brown sugar flows into the inside of packing bag through guide tube 8, along with the increase of the inside brown sugar of packing bag, one side downstream that box 15 was placed near to balance plate 11, the bottom of balance plate 11 and the top contact of cushion seat 21 and promote cushion seat 21 downstream, meanwhile, cushion seat 21 promotes buffer spring 19 and removes and compress buffer spring 19, thereby realize the buffering to balance plate 11, the bottom when balance plate 11 contacts motor switch 16's top, motor switch 16 opens the way and makes driving motor 5 cut off the power supply.

The operator presses the balance plate 11 downwards with one hand until the clamping rod 26 is clamped into the clamping seat 25, and the packing bag filled with the brown sugar is taken down with the other hand of the operator.

For those skilled in the art, firstly, through the design of the weighing mechanism, an operator places a weight 14 with a proper weight inside the load box 13, the operator presses down the end of the balance plate 11 close to the placement box 15 until the clamping rod 26 is clamped inside the clamping seat 25, the bottom end of the balance plate 11 presses the motor switch 16, so that the motor switch 16 is in an open circuit state, the operator electrically connects the motor switch 16 with an external power supply, brown sugar flows into the interior of the packaging bag through the material guide pipe 8, as the brown sugar inside the packaging bag increases, one side of the balance plate 11 close to the placement box 15 moves downwards, the bottom end of the balance plate 11 contacts with the top end of the buffer seat 21 and pushes the buffer seat 21 to move downwards, when the bottom end of the balance plate 11 contacts with the top end of the motor switch 16, the motor switch 16 is disconnected, so that the driving motor 5 is powered off, and when the brown sugar in the packaging bag reaches a certain amount, the driving motor 5 can be automatically closed to realize the quantitative brown sugar filling.

Secondly, according to the invention, through the design of the buffer mechanism, when the balance plate 11 begins to incline, the bottom end of the balance plate 11 is in contact with the top end of the buffer seat 21 and pushes the buffer seat 21 to move downwards, meanwhile, the buffer seat 21 pushes the buffer spring 19 to move and compress the buffer spring 19, so that the balance plate 11 is buffered, the bottom end of the balance plate 11 is in contact with the top end of the motor switch 16, the balance plate 11 is buffered through the buffer seat 21 and the buffer spring 19, and the motor switch 16 is prevented from being damaged due to the overhigh speed of the balance plate 11.

Thirdly, through the design of the limiting mechanism, an operator places an empty bag in the placing box 15 and holds the bag with one hand, and lifts the balance plate 11 upwards with the other hand until the clamping rod 26 is separated from the clamping seat 25, at this time, one side of the balance plate 11 close to the placing box 15 moves upwards, and after the balance plate 11 drives the fixing box 22 to move upwards to a certain height, the rope 23 is tightened, so that the balance plate 11 is limited to further rise, and the maximum rising height of the balance plate 11 is controlled.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.