Bushing bag binding device

Abstract

The utility model provides a bag binding device which comprises a machine box, a supply mechanism used for supplying a beancurd skin rope, a clamping mechanism used for fixing a bag, a clamping mechanism used for driving the beancurd skin rope to rotate around the bag, a spiral mechanism used for driving the beancurd skin rope to be knotted and a cutting mechanism used for cutting off the tail end of the beancurd skin rope. The top face of the machine box is a working table face, the supply mechanism, the cutting-off mechanism and the spiral mechanism are sequentially arranged on the working table face from left to right in a straight line mode, the clamping mechanism is arranged on the side of the cutting-off mechanism, and the clamping mechanism is arranged on the side of the cutting-off mechanism and located on the opposite side of the clamping mechanism. The automatic bag binding machine can automatically complete binding of the bag, the whole binding process is highly automatic, the efficiency is high, and the binding effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of lucky bag production equipment, in particular to a lucky bag binding device. Background Art

[0002] As a hot pot ingredient, the lucky bag is rich in nutrition and tastes great, making it very popular. When processing the lucky bag, the slurry needs to be injected into the lucky bag skin, and then the opening of the lucky bag skin is sealed. The lucky bag skin is sealed by tying the opening of the lucky bag skin with a usable bean skin rope to prevent the slurry from leaking. However, the existing lucky bag processing usually uses manual tying to seal the opening of the lucky bag skin, which has slow processing efficiency, uneven processing quality, and cannot effectively guarantee product quality.

[0003] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which led to the emergence of this case. Utility Model Content

[0004] The utility model aims to solve the above shortcomings and provides a lucky bag binding device which has high processing efficiency and can realize automatic binding and sealing of the lucky bag.

[0005] The solution adopted by the utility model to solve the technical problem is: a lucky bag strap device, including a chassis, a supply mechanism for supplying bean curd skin rope, a clamping mechanism for fixing the lucky bag skin, a clamping mechanism for driving the bean curd skin rope to rotate around the lucky bag skin, a spiral mechanism for driving the bean curd skin rope to tie a knot, and a cutting mechanism for cutting the end of the bean curd skin rope. The top surface of the chassis is a work table, and the supply mechanism, the cutting mechanism and the spiral mechanism are arranged in a straight line from left to right on the work table in sequence, the clamping mechanism is arranged beside the cutting mechanism, and the clamping mechanism is arranged beside the cutting mechanism and on the opposite side of the clamping mechanism.

[0006] Furthermore, since the finished bean curd ropes are usually in a scattered state and are extremely easy to break, making them inconvenient to transport, in order to realize the automatic supply of the bean curd ropes; the supply mechanism includes a conveying frame and a discharge barrel for placing the bean curd ropes, the conveying frame is arranged on the work surface, the discharge barrel is arranged on the side of the conveying frame, the conveying frame includes a front conveying plate and a rear conveying plate, the front conveying plate is provided with an input pipe, the rear conveying plate is provided with an output pipe, the axis center line of the input pipe coincides with the axis center line of the output pipe to straighten the bean curd ropes, and a fixer for fixing the bean curd ropes is also provided between the front conveying plate and the rear conveying plate, the fixer is a pneumatic clamp.

[0007] Furthermore, in order to cut off the end of the bean curd rope; the cutting mechanism includes a cutting cylinder and pneumatic scissors, the cutting cylinder is installed in a chassis, and the cylinder rod of the cutting cylinder passes upward through the work surface and is connected to the pneumatic scissors to drive the pneumatic scissors to rise and fall to cut the bean curd rope.

[0008] Furthermore, in order to fix the bean curd rope so as to tie the next lucky bag; the clamping mechanism includes a clamping seat, a clamping cylinder, a connecting rod assembly, a left clamp and a right clamp, one end of the left clamp and the right clamp are rotatably mounted on the clamping seat, the other end of the left clamp and the right clamp are provided with an arc-shaped notch for tightening the lucky bag skin, the clamping cylinder is mounted on the clamping seat, the connecting rod assembly is mounted on the clamping cylinder, and the connecting rod assembly is also connected to the middle part of the left clamp and the right clamp to drive the left clamp and the right clamp to rotate synchronously and open and close to clamp the lucky bag skin through the extension and contraction of the clamping cylinder.

[0009] Furthermore, in order to achieve synchronous opening and closing of the left and right splints, the connecting rod assembly includes a connecting rod seat, a left connecting rod and a right connecting rod, the connecting rod seat is installed on the clamping cylinder, one end of the left and right connecting rods is rotatably installed on the connecting rod seat, and the other ends of the left and right connecting rods are respectively rotatably installed on the middle part of the left and right splints to drive the left and right splints to rotate synchronously.

[0010] Furthermore, in order to control the bean curd rope to rotate one end around the lucky bag; the clamping mechanism includes a mounting frame, a first rotating motor, a first rotating arm, a second rotating motor, a second rotating arm, a rotating motor, a lifting cylinder and a clamp, the first rotating motor is installed on the mounting frame, one end of the first rotating arm is fixedly connected to the rotating motor, the second rotating motor is fixedly installed on the other end of the first rotating arm, one end of the second rotating arm is connected to the second rotating motor, the rotating motor is fixedly installed on the other end of the second rotating arm, the lifting cylinder is installed on the rotating motor, the clamp is installed on the lifting cylinder, and the clamp is a pneumatic clamp.

[0011] Furthermore, in order to obtain the bean curd rope from the clamping mechanism and drive the bean curd rope to be knotted; the spiral mechanism includes a spiral clamp, a first driving group for driving the spiral clamp to open and close the bean curd rope, a second driving group for driving the spiral clamp to rotate, and a third driving group for driving the spiral clamp to move left and right;

[0012] The third driving group includes a guide rail, a moving seat, a screw nut, a screw and a screw motor. The guide rail is arranged on the work surface, the moving seat is slidably installed on the guide rail, the screw is rotatably installed on the work surface and the screw is parallel to the guide rail, one end of the screw is transmission connected to the screw motor, the screw nut is rotatably installed on the screw, and the moving seat is fixedly connected to the screw nut. The second driving group includes a rotating motor, which is installed on the moving seat. The motor shaft of the rotating motor is fixedly connected to the spiral clamp to drive the spiral clamp to rotate.

[0013] Furthermore, in order to clamp the bean curd rope by the spiral clamp; the spiral clamp includes a fixed clamp and a movable clamp, the fixed clamp is coaxially fixedly installed on the motor shaft of the rotating motor, the movable clamp is movably sleeved on the fixed clamp, a transmission key head is provided on the fixed clamp, and a sliding key groove is axially provided on the movable clamp, and the length of the sliding key groove is greater than the length of the transmission key head so that the movable clamp can move axially relative to the fixed clamp;

[0014] The other end of the fixed chuck is provided with a fixed clamp rod with a spiral structure, one end of the movable chuck is connected to the first drive group so as to move axially relative to the fixed chuck under the drive of the first drive group, and the other end of the movable chuck is provided with a movable clamp rod with a spiral structure.

[0015] Furthermore, in order to promote the movement of the movable chuck and drive the spiral clamp to open and close the bean curd rope to complete the bean curd rope knotting action; the first driving group includes an opening and closing cylinder, which is installed on a movable seat, and a push block is installed on the cylinder rod of the opening and closing cylinder. The movable chuck is radially recessed inward to form a push groove, and the push block is inserted into the push groove so that the movable chuck can be driven to move axially relative to the fixed chuck through the extension and contraction of the opening and closing cylinder.

[0016] Compared with the prior art, the utility model has the following advantages: the utility model can automatically complete the binding of the lucky bag, and the supply of the bean skin rope is convenient and fast. When in use, the scattered bean skin rope is put into the discharge barrel, and the input tube and the output tube straighten the bean skin rope, and the clamping mechanism clamps the bean skin rope. When the clamping mechanism does not pull the bean skin rope, the fixer fixes the bean skin rope to prevent the bean skin rope from exiting the output tube due to gravity. Here, the bean skin rope is directly supplied without transportation, which effectively prevents the bean skin rope from breaking. The lucky bag skin is fixed by the clamping mechanism. When the clamping mechanism drives the bean skin rope to circle, because the cross-section of the bean skin rope is rectangular, in order to avoid the bean skin rope from twisting when winding, the clamp not only rotates around the lucky bag skin to form a circle, but also rotates itself, thereby effectively preventing the bean skin rope from curling. The entire binding process is highly automated, efficient, and has a good binding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the supply mechanism and the clamping mechanism;

[0020] Figure 3 is a structural schematic diagram of the clamping mechanism;

[0021] Figure 4 It is a structural schematic diagram of the spiral mechanism;

[0022] Figure 5 It is a top view of the structure of the supply mechanism, the clamping mechanism and the screw mechanism;

[0023] Figure 6 It is a schematic diagram of the structure of the supply mechanism and the spiral mechanism in the initial state;

[0024] Figure 7 Schematic diagram of the structure of the spiral clamp.

[0025] In the figure: chassis 1; supply mechanism 2; discharge barrel 21; front conveying plate 22; rear conveying plate 23; input pipe 24; output pipe 25; fixer 26; clamping mechanism 3; clamping seat 31; clamping cylinder 32; connecting rod seat 33; left connecting rod 34; right connecting rod 35; left clamping plate 36; right clamping plate 37; clamping mechanism 4; mounting frame 41; first rotating motor 42; first rotating arm 43; rotating motor 44; lifting cylinder 45; clamping claw 46; second rotating motor 47; second rotating arm 48; screw mechanism 5; guide rail 51; moving seat 52; screw rod 53; screw motor 54; rotating motor 55; fixed chuck 56; movable chuck 57; pushing groove 571; opening and closing cylinder 58; pushing block 59; cutting mechanism 6; cutting cylinder 61; pneumatic scissors 62; bean skin rope 7. DETAILED DESCRIPTION

[0026] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments:

[0027] Specific embodiment: Figure 1-7 As shown, this embodiment provides a lucky bag strap device, including a chassis 1, a supply mechanism 2 for supplying a bean curd rope 7, a clamping mechanism 3 for fixing the lucky bag skin, a clamping mechanism 4 for driving the bean curd rope 7 to rotate around the lucky bag skin, a spiral mechanism 5 for driving the bean curd rope 7 to tie a knot, and a cutting mechanism 6 for cutting off the end of the bean curd rope 7. The top surface of the chassis 1 is a work surface, and the supply mechanism 2, the cutting mechanism 6 and the spiral mechanism 5 are arranged in a straight line from left to right on the work surface in sequence, the clamping mechanism 3 is arranged beside the cutting mechanism 6, and the clamping mechanism 4 is arranged beside the cutting mechanism 6 and on the opposite side of the clamping mechanism 3.

[0028] In this embodiment, since the finished bean curd rope 7 is usually in a scattered state and is extremely easy to break, which is not convenient for transportation, in order to realize the automatic supply of the bean curd rope 7; the supply mechanism 2 includes a conveying frame and a discharge barrel 21 for placing the bean curd rope, the discharge barrel 21 is arranged on the outside of the conveying frame, the conveying frame includes a front conveying plate 22 and a rear conveying plate 23, the front conveying plate 22 is provided with an input pipe 24, the rear conveying plate 23 is provided with an output pipe 25, the axis center line of the input pipe 24 coincides with the axis center line of the output pipe 25 to straighten the bean curd rope 7, and a fixer 26 for fixing the bean curd rope is also provided between the front conveying plate 22 and the rear conveying plate 23, and the fixer 26 is a pneumatic clamp.

[0029] In this embodiment, in order to cut off the end of the bean curd rope 7; the cutting mechanism 6 includes a cutting cylinder 61 and a pneumatic scissors 62, the cutting cylinder 61 is installed in the chassis 1, and the cylinder rod of the cutting cylinder 61 passes through the work surface upward and is connected to the pneumatic scissors 62 to drive the pneumatic scissors 62 to rise and fall to cut the bean curd rope.

[0030] In this embodiment, in order to fix the bean curd rope so as to tie the next lucky bag; the clamping mechanism 3 includes a clamping seat 31, a clamping cylinder 32, a connecting rod assembly, a left clamping plate 36 and a right clamping plate 37, one end of the left clamping plate 36 and the right clamping plate 37 are rotatably mounted on the clamping seat 31, and the other end of the left clamping plate 36 and the right clamping plate 37 are provided with an arc-shaped notch for tightening the lucky bag skin, the clamping cylinder 32 is mounted on the clamping seat 31, and the connecting rod assembly is mounted on the clamping cylinder 32, and the connecting rod assembly is also connected to the middle part of the left clamping plate 36 and the right clamping plate 37 so that when the clamping cylinder 32 is extended or retracted, the left clamping plate 36 and the right clamping plate 37 are driven to rotate synchronously to open and close and clamp the lucky bag skin.

[0031] In this embodiment, in order to realize the synchronous opening and closing of the left clamping plate 36 and the right clamping plate 37; the connecting rod assembly includes a connecting rod seat 33, a left connecting rod 34 and a right connecting rod 35, the connecting rod seat 33 is installed on the driver, one end of the left connecting rod 34 and the right connecting rod 35 is rotatably installed on the connecting rod seat 33, and the other end of the left connecting rod 34 and the right connecting rod 35 is respectively rotatably installed in the middle of the left clamping plate 36 and the right clamping plate 37 to drive the left clamping plate 36 and the right clamping plate 37 to rotate synchronously.

[0032] In this embodiment, in order to control the bean curd rope to rotate one end around the lucky bag; the clamping mechanism 4 includes a mounting frame 41, a first rotating motor 42, a first rotating arm 43, a second rotating motor 47, a second rotating arm 48, a rotating motor 44, a lifting cylinder 45 and a clamp 46. The first rotating motor 42 is installed on the mounting frame 41, one end of the first rotating arm 43 is fixedly connected to the rotating motor 55, the second rotating motor 47 is fixedly installed on the other end of the first rotating arm 43, one end of the second rotating arm 48 is connected to the second rotating motor 47, the rotating motor 44 is fixedly installed on the other end of the second rotating arm 48, the lifting cylinder 45 is installed on the rotating motor 44, the clamp 46 is installed on the lifting cylinder 45, and the clamp 46 is a pneumatic clamp.

[0033] In this embodiment, in order to obtain the bean curd rope from the clamping mechanism 4 and drive the bean curd rope to be knotted; the spiral mechanism 5 includes a spiral clamp, a first driving group for driving the spiral clamp to open and close the bean curd rope, a second driving group for driving the spiral clamp to rotate, and a third driving group for driving the spiral clamp to move left and right;

[0034] The third driving group includes a guide rail 51, a moving seat 52, a screw nut, a screw 53 and a screw motor 54. The guide rail 51 is set on the work surface, the moving seat 52 is slidably installed on the guide rail 51, the screw 53 is rotatably installed on the work surface and the screw 53 is parallel to the guide rail 51, one end of the screw 53 is transmission connected to the screw motor 54, the screw nut is rotatably installed on the screw 53, and the moving seat 52 is fixedly connected to the screw nut. The second driving group includes a rotating motor 55, which is installed on the moving seat 52. The motor shaft of the rotating motor 55 is fixedly connected to the spiral clamp to drive the spiral clamp to rotate.

[0035] In this embodiment, in order to clamp the bean curd rope by a spiral clamp; the spiral clamp includes a fixed clamp 56 and a movable clamp 57, the fixed clamp 56 is coaxially fixedly installed on the motor shaft of the rotating motor 55, the movable clamp 57 is movably sleeved on the fixed clamp 56, a transmission key head is provided on the fixed clamp 56, and a sliding key groove is axially provided on the movable clamp 57, and the length of the sliding key groove is greater than the length of the transmission key head so that the movable clamp 57 can move axially relative to the fixed clamp 56;

[0036] The other end of the fixed chuck 56 is provided with a fixed chuck rod with a spiral structure, one end of the movable chuck 57 is connected to the first driving group so as to move axially relative to the fixed chuck 56 under the drive of the first driving group, and the other end of the movable chuck 57 is provided with a movable chuck rod with a spiral structure.

[0037] In this embodiment, in order to push the movable chuck 57 to move and drive the spiral clamp to open and close the bean curd rope to complete the bean curd rope knotting action; the first driving group includes an opening and closing cylinder 58, and the opening and closing cylinder 58 is installed on the movable seat 52. A push block 59 is installed on the cylinder rod of the opening and closing cylinder 58. A push groove 571 is formed on the movable chuck 57 in a radially inward recess. The push block 59 is inserted into the push groove 571 so that the movable chuck 57 can be driven to move axially relative to the fixed chuck 56 when the opening and closing cylinder 58 is extended or retracted.

[0038] Specific implementation process:

[0039] Supply of bean curd rope: Place the loose bean curd rope directly in the discharge barrel 21, and the bean curd rope enters the supply mechanism 2 through the input pipe 24 and is output by the output pipe 25. In the initial state, the spiral clamp moves to the leftmost side, and at this time, the end of the output pipe 25 is just located at the second circle of the spiral clamp;

[0040] Lucky bag fixing: Place the lucky bag skin on the clamping mechanism 3, the cylinder rod of the clamping cylinder 32 extends, driving the connecting rod seat 33 to move forward, the left connecting rod 34 and the right connecting rod 35 rotate to drive the left clamping plate 36 and the right clamping plate 37 to rotate and open, the left clamping plate 36 and the right clamping plate 37 are respectively provided with arc-shaped notches, the lucky bag is placed between the arc-shaped notches of the left clamping plate 36 and the right clamping plate 37, and then, the cylinder rod of the clamping cylinder 32 retracts, driving the connecting rod seat 33 to move backward, the left connecting rod 34 and the right connecting rod 35 rotate to drive the left clamping plate 36 and the right clamping plate 37 to rotate and close, and tighten the lucky bag;

[0041] Knotting: The clamping mechanism 4 clamps the bean curd rope out from the output tube 25, and rotates the end of the bean curd rope around the lucky bag skin for one circle. Specifically, the first rotating motor 42 drives the first rotating arm 43 to rotate, and cooperates with the second rotating motor 47 to drive the second rotating arm 48 to rotate, and moves the rotating motor 44 to above the end of the output tube 25. The lifting cylinder 45 drives the clamping claw 46 to move downward to clamp the bean curd rope at the output tube 25. Then, the first rotating motor 42 drives the first rotating arm 43 to rotate, and the second rotating motor 47 drives the second rotating arm 48 to rotate, driving the clamping claw 46 to rotate around the lucky bag skin for one circle. The rotating motor 44 rotates synchronously, driving the clamping claw itself to rotate, preventing the bean curd rope from being twisted. Rolling, while the clamping jaws 46 rotate, the rotating motor 55 drives the spiral clamp to rotate, and rotates the left end of the spiral clamp to the bottom of the clamping jaws 46, and the opening and closing cylinder 58 extends, driving the movable clamp 57 to slide to the left relative to the fixed clamp 56, and the spiral clamp opens. The clamping jaws 46 put the bean curd rope on the spiral clamp, and then, the opening and closing cylinder 58 retracts, and the spiral clamp clamps one end of the bean curd rope. Then, the rotating motor 55 rotates, and the spiral clamp drives one end of the bean curd rope to pass through the rope loop and tie a knot. At the same time, the screw rod 53 rotates, driving the movable seat 52 to slide to the right, and completing the tightening action with the bean curd rope. Then, the cutting cylinder 61 drives the pneumatic scissors 62 to move upward, cuts off the end of the bean curd rope, and starts tying the next lucky bag.

[0042] The above description is only an embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structure or equivalent process transformation made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A lucky bag strapping device, characterized in that: It includes a chassis, a supply mechanism for supplying bean curd rope, a clamping mechanism for fixing the lucky bag skin, a clamping mechanism for driving the bean curd rope to rotate around the lucky bag skin, a spiral mechanism for driving the bean curd rope to tie a knot, and a cutting mechanism for cutting the end of the bean curd rope. The top surface of the chassis is a work surface, and the supply mechanism, cutting mechanism and spiral mechanism are arranged in a straight line from left to right on the work surface in sequence, the clamping mechanism is arranged beside the cutting mechanism, and the clamping mechanism is arranged beside the cutting mechanism and on the opposite side of the clamping mechanism.

2. The lucky bag strapping device according to claim 1, characterized in that: The supply mechanism includes a conveying frame and a discharge barrel for placing the bean curd rope, the conveying frame is arranged on the work surface, the discharge barrel is arranged beside the conveying frame, the conveying frame includes a front conveying plate and a rear conveying plate, the front conveying plate is provided with an input pipe, the rear conveying plate is provided with an output pipe, the axis center line of the input pipe coincides with the axis center line of the output pipe to straighten the bean curd rope, and a fixer for fixing the bean curd rope is also provided between the front conveying plate and the rear conveying plate, and the fixer is a pneumatic clamp.

3. The lucky bag strapping device according to claim 1, characterized in that: The cutting mechanism comprises a cutting cylinder and pneumatic scissors. The cutting cylinder is installed in a chassis. The cylinder rod of the cutting cylinder passes through the work surface upward and is connected to the pneumatic scissors to drive the pneumatic scissors to rise and fall to cut the bean curd rope.

4. The lucky bag strapping device according to claim 1, characterized in that: The clamping mechanism includes a clamping seat, a clamping cylinder, a connecting rod assembly, a left clamping plate and a right clamping plate. One end of the left clamping plate and the right clamping plate is rotatably mounted on the clamping seat, and the other end of the left clamping plate and the right clamping plate is provided with an arc-shaped notch for tightening the lucky bag skin. The clamping cylinder is mounted on the clamping seat, and the connecting rod assembly is mounted on the clamping cylinder. The connecting rod assembly is also connected to the middle part of the left clamping plate and the right clamping plate to drive the left clamping plate and the right clamping plate to rotate synchronously and open and close to clamp the lucky bag skin through the extension and contraction of the clamping cylinder.

5. The lucky bag strapping device according to claim 4, characterized in that: The connecting rod assembly includes a connecting rod seat, a left connecting rod and a right connecting rod. The connecting rod seat is installed on the clamping cylinder. One end of the left connecting rod and the right connecting rod is rotatably installed on the connecting rod seat, and the other end of the left connecting rod and the right connecting rod is rotatably installed on the middle part of the left clamping plate and the right clamping plate respectively to drive the left clamping plate and the right clamping plate to rotate synchronously.

6. The lucky bag strapping device according to claim 1, characterized in that: The clamping mechanism includes a mounting frame, a first rotating motor, a first rotating arm, a second rotating motor, a second rotating arm, a rotating motor, a lifting cylinder and a clamp, the first rotating motor is mounted on the mounting frame, one end of the first rotating arm is fixedly connected to the rotating motor, the second rotating motor is fixedly mounted on the other end of the first rotating arm, one end of the second rotating arm is connected to the second rotating motor, the rotating motor is fixedly mounted on the other end of the second rotating arm, the lifting cylinder is mounted on the rotating motor, the clamp is mounted on the lifting cylinder, and the clamp is a pneumatic clamp.

7. The lucky bag strapping device according to claim 1, characterized in that: The spiral mechanism includes a spiral clamp, a first driving group for driving the spiral clamp to open and close and clamp the bean curd rope, a second driving group for driving the spiral clamp to rotate, and a third driving group for driving the spiral clamp to move left and right; The third driving group includes a guide rail, a moving seat, a screw nut, a screw and a screw motor. The guide rail is arranged on the work surface, the moving seat is slidably installed on the guide rail, the screw is rotatably installed on the work surface and the screw is parallel to the guide rail, one end of the screw is transmission connected to the screw motor, the screw nut is rotatably installed on the screw, and the moving seat is fixedly connected to the screw nut. The second driving group includes a rotating motor, which is installed on the moving seat. The motor shaft of the rotating motor is fixedly connected to the spiral clamp to drive the spiral clamp to rotate.

8. The lucky bag strapping device according to claim 7, characterized in that: The spiral clamp comprises a fixed clamp and a movable clamp, wherein the fixed clamp is coaxially fixedly mounted on the motor shaft of the rotating motor, the movable clamp is movably sleeved on the fixed clamp, a transmission key head is provided on the fixed clamp, and a sliding key groove is axially provided on the movable clamp, wherein the length of the sliding key groove is greater than the length of the transmission key head so that the movable clamp can move axially relative to the fixed clamp; The other end of the fixed chuck is provided with a fixed clamp rod with a spiral structure, one end of the movable chuck is connected to the first drive group so as to move axially relative to the fixed chuck under the drive of the first drive group, and the other end of the movable chuck is provided with a movable clamp rod with a spiral structure.

9. The lucky bag strapping device according to claim 8, characterized in that: The first driving group includes an opening and closing cylinder, which is installed on a movable seat. A push block is installed on the cylinder rod of the opening and closing cylinder. A push groove is formed on the movable chuck which is radially recessed inward. The push block is inserted into the push groove so that the movable chuck can be driven to move axially relative to the fixed chuck through the extension and contraction of the opening and closing cylinder.

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