Low-position rocker arm winding device for packaging

Abstract

The utility model discloses a low-position rocker arm winding device for packaging, which comprises a roller conveying line, a rocker arm winding mechanism is erected on the roller conveying line, a film clamping and breaking mechanism is arranged below the rocker arm winding mechanism, the film clamping and breaking mechanism comprises a fixed support, and a film clamping structure and a film breaking structure are arranged on the fixed support. The film clamping and cutting mechanism has the advantages that the packaging film is clamped and cut off through the film clamping and cutting mechanism, the film remaining length of the end of the innermost layer of the wound packaging film on the side edge of a carton can be effectively reduced, and stacking of the end of the innermost layer of the wound packaging film can be effectively prevented; the packaging film can be wound through the rocker arm winding mechanism, and the packaging film can be automatically wound up and down; according to the low-position rocker arm winding device, the problem that a film left at the end of an inner-layer packaging film of existing equipment is too long is effectively solved, the stacking problem caused by the fact that the film left at the initial end of the packaging film is too long is solved, and the winding attractiveness of the packaging film is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a low-position rocker arm winding device for packaging. Background Art

[0002] Stretch film, also known as stretch film, can use the film's super strong wrapping force and retractability to bundle products into a unit compactly and fixedly. Even in an unfavorable environment, the products will not be loose or separated, and there are no sharp edges or stickiness to avoid damage. Stretch film wraps objects beautifully and can make objects waterproof, dustproof, and damage-proof. It is widely used in cargo pallet packaging, such as electronics, building materials, chemicals, metal products, auto parts, wires and cables, daily necessities, food, papermaking and other industries. Traditional stretch film packaging uses manual wrapping, but manual wrapping is inefficient and costly, and the manual labor is large, and the wrapping tightness of the stretch film is poor. Therefore, mechanical wrapping came into being, including pallet wrapping machines, rocker arm wrapping machines, ring wrapping machines, cylindrical wrapping machines, horizontal wrapping machines, palletless wrapping machines, etc.

[0003] The rocker arm wrapping machine is mainly suitable for modern operations with large production volume and high logistics efficiency, and is an equipment that meets the packaging requirements of lighter or heavier goods. The known rocker arm wrapping machine drives the cantilever and rocker arm to rotate by rotating the motor on the frame, and drives the film frame up and down by the lifting motor on the rocker arm. The film frame on the rocker arm is made to spiral up or down around the product so that the PE wrapping film is wrapped around the product, and the film cutting mechanism realizes the functions of automatic film loading and cutting. For example, a double rocker arm wrapping machine with patent publication number CN204137352U supplies film through a film frame mechanism, drives the film frame mechanism to rotate through a rocker mechanism, and fixes and cuts the PE wrapping film through an upper film cutting mechanism. However, the upper film cutting mechanism disclosed therein is parallel to the conveyor line mechanism and fixed on the ground, resulting in a longer film length at the starting end of the PE wrapping film when the film is applied, and the PE wrapping film at the starting end is wound and stacked together, which seriously affects the packaging effect of the product and has poor aesthetics. Utility Model Content

[0004] The utility model aims to provide a low-position rocker arm winding device for packaging to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-position rocker arm winding device for packaging, comprising a roller conveyor line, a rocker arm winding mechanism is mounted on the roller conveyor line, a film clamping and film cutting mechanism is arranged below the rocker arm winding mechanism, the film clamping and film cutting mechanism comprises a fixed bracket, and a film clamping structure and a film cutting structure are arranged on the fixed bracket;

[0006] The clamping structure includes a first cylinder, which is horizontally arranged on a fixed bracket, and the conveying direction of the first cylinder is perpendicular to the conveying direction of the roller conveyor line. The first cylinder is connected to a vertically arranged first mounting plate, and the side of the first mounting plate close to the roller conveyor line is provided with a vertically arranged second cylinder, the second cylinder is connected to a vertically arranged support rod, and the lower end side of the support rod is provided with a vertically arranged first clamping plate, and the side of the first mounting plate away from the roller conveyor line is rotatably connected to a third cylinder, and the upper end of the third cylinder is rotatably connected to a swivel arm, and the swivel arm is fixedly connected to a first rotating shaft, and the first rotating shaft is horizontally rotatably installed on the upper end of the first mounting plate, and the first rotating shaft is fixedly connected to a second clamping plate, and the second clamping plate is matched with the first clamping plate.

[0007] Further preferably, the support rod is a cylindrical long rod, which is convenient for the support rod to be pulled out from the innermost layer of the wrapped packaging film; the clamping surfaces of the first clamping plate and the second clamping plate are both flat, which is convenient for the first clamping plate and the second clamping plate to clamp the lower half of the end of the packaging film.

[0008] Further preferably, the film cutting structure includes a rotating bracket, the rotating bracket is perpendicular to the roller conveyor line, the middle part of the rotating bracket is rotatably connected to the second rotating shaft, the second rotating shaft is horizontally installed on the fixed bracket, the end of the rotating bracket close to the roller conveyor line is rotatably connected to the fourth cylinder, the end of the fourth cylinder away from the rotating bracket is rotatably connected to the fixed bracket, the end of the rotating bracket away from the roller conveyor line is provided with a fifth cylinder perpendicular to the rotating bracket, the fifth cylinder is connected to a second mounting plate parallel to the top of the rotating bracket, and the second mounting plate is provided with a heating wire parallel to the second mounting plate.

[0009] Further preferably, a pressure rod is provided on the second mounting plate, and the pressure rod is a cylindrical long rod, and the pressure rod is arranged on the side of the heating wire and parallel to the heating wire. The cut packaging film can be pressed against the wound packaging film through the pressure rod, and the packaging film can be attached to the support rod, so that the end of the cut packaging film can be attached to the surface of the support rod, which is convenient for the next winding of the packaging film.

[0010] Further preferably, two guide assemblies are provided between the second mounting plate and the rotating bracket, and the two guide assemblies are symmetrically arranged on both sides of the fifth cylinder. The movement of the second mounting plate is guided by the guide assemblies to ensure smooth, stable and precise movement of the second mounting plate.

[0011] Further preferably, the guide assembly consists of a guide rod and a linear bearing, and linear guidance is achieved by the guide rod moving along the linear bearing.

[0012] Further preferably, the rocker arm winding mechanism comprises a stand, a rocker arm is arranged on the stand, a reduction motor is connected to the upper end of the rocker arm, and a film frame is connected to the lower end of the rocker arm. The stand is used for setting up the rocker arm, the reduction motor can drive the rocker arm to rotate, and the film frame is used for loading the packaging film.

[0013] Further preferably, the rocker arm includes a first arm and a second arm connected vertically, the first arm is connected to a reduction motor, the second arm is perpendicular to the roller conveyor line, and the second arm is provided with a lifting assembly connected to the film frame. The arrangement of the first arm and the second arm facilitates the processing of the rocker arm and ensures that the rocker arm can drive the film frame to rotate around the carton, and the lifting assembly can drive the film frame to rise and fall along the second arm, thereby driving the package on the film frame to rise and fall, and realizing the up and down winding of the packaging film.

[0014] Further preferably, the lifting assembly comprises a motor, a chain and a roller, the motor is arranged at the upper end of the second arm, the roller is connected to the film frame and is rotatably arranged on the second arm, and the motor and the roller are connected by a chain. The motor can drive the chain to rotate, drive the sprocket connected to the chain to rise and fall, and then drive the film frame to rise and fall along the second arm, so as to realize the up and down winding of the packaging film.

[0015] Further preferably, the roller conveyor line is provided with a blowing pipe arranged obliquely upward, and the blowing pipe is connected to a fan. The blowing pipe can blow the end of the packaging film, which can effectively prevent the upper half of the end of the packaging film from falling downward due to not being clamped, resulting in packaging film stacking.

[0016] Beneficial effects: The low-position rocker arm winding device for packaging of the utility model can clamp and cut the packaging film through the film clamping and cutting mechanism, and can effectively reduce the film length of the innermost end of the wound packaging film on the side of the carton, and can effectively prevent the innermost end of the wound packaging film from stacking; specifically, the first cylinder can drive the first mounting plate to move backward, so that the support rod and the first clamping plate are close to the side and edge of the carton, reducing the stretching length of the packaging film end during winding, preventing the packaging film end from stretching too long and preventing stacking due to the excessive length of the packaging film end; the fifth cylinder can drive the heating wire to move toward The packaging film is approached and cut off, and because the support rod supports the inner side of the outermost packaging film, the heating wire can be prevented from cutting the multi-layer packaging film, and at the same time, it is ensured that the end of the packaging film after being cut can also be attached to the packaging film on the inner side thereof, and no overlapping film phenomenon will occur; the packaging film can be wound by the rocker arm winding mechanism, and the packaging film can be automatically wound up and down; the low-position rocker arm winding device effectively solves the problem of too long film length at the end of the inner packaging film of the existing equipment, solves the problem of stacking caused by too long film length of the packaging film, and improves the winding aesthetics of the packaging film; and can solve the problems of large labor workload, low efficiency and high cost of manual film winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the axial structure of the low-position rocker arm winding device for packaging disclosed in an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the front view of the low-position rocker arm wrapping device for packaging disclosed in an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the rocker arm winding mechanism disclosed in the embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the film clamping and cutting mechanism disclosed in the embodiment of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the sandwich structure disclosed in the embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the film breaking structure disclosed in the embodiment of the utility model.

[0023] Figure markings: 1-roller conveyor line, 2-rocker winding mechanism, 21-stand, 22-rocker, 221-first arm, 222-second arm, 23-reduction motor, 24-film frame, 25-lifting assembly, 3-film clamping and film cutting mechanism, 31-fixed bracket, 32-film clamping structure, 321-first cylinder, 322-first mounting plate, 323-second cylinder, 324-support rod, 325-first clamping plate, 326-third cylinder, 327-rotating arm, 328-first rotating shaft, 329-second clamping plate, 33-film cutting structure, 331-rotating bracket, 332-second rotating shaft, 333-fourth cylinder, 334-fifth cylinder, 335-second mounting plate, 336-heating wire, 337-pressure rod, 338-guide assembly. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figure 1-6As shown, a low-position rocker arm winding device for packaging is used for winding packaging film during carton packaging to achieve low-position winding of packaging film. The low-position rocker arm winding device includes a roller conveyor line 1, a rocker arm winding mechanism 2 is mounted on the roller conveyor line 1, and a film clamping and cutting mechanism 3 is provided below the rocker arm winding mechanism 2, wherein the roller conveyor line 1 is used for conveying cartons to realize conveying the cartons to a set position for facilitating the winding of the packaging film, and conveying the cartons to a material unloading position after winding; the rocker arm winding mechanism 2 is used for carrying the packaging film and winding the packaging film onto the side wall of the carton; the film clamping and cutting mechanism 3 is used for clamping the end of the packaging film, automatically leaning it against the side wall of the carton, and cutting and holding the packaging film after the packaging film winding is completed for facilitating the next winding. The film clamping and cutting mechanism 3 can reduce the remaining film length of the innermost packaging film on the side wall, reduce the overlapping film and disordered film area at the initial end of the packaging film, and ensure the beautiful winding of the packaging film.

[0026] The film clamping and cutting mechanism 3 comprises a fixed bracket 31, on which a film clamping structure 32 and a film cutting structure 33 are provided. The film clamping structure 32 is used to clamp the end of the packaging film and to make the end of the packaging film stick to the side wall of the carton, and the film cutting structure 33 is used to automatically cut the packaging film. The film clamping structure 32 includes a first cylinder 321, which is horizontally arranged on the fixed bracket 31. The conveying direction of the first cylinder 321 is perpendicular to the conveying direction of the roller conveyor line 1. The first cylinder 321 is connected to a vertically arranged first mounting plate 322. The side of the first mounting plate 322 close to the roller conveyor line 1 is provided with a vertically arranged second cylinder 323. The second cylinder 323 is connected to a vertically arranged support rod 324. The first cylinder 321 can drive the first mounting plate 322 to move forward and backward, and move the first mounting plate 322 close to or away from the roller conveyor line 1, so that the support rod 324 can move close to or away from the roller conveyor line 1, and then the support rod 324 can move close to or away from the carton to be packaged conveyed on the roller conveyor line 1. The support rod 324 is used to support the inner side of the end of the packaging film, so as to facilitate clamping and supporting the end of the packaging film and prevent the end of the packaging film from stacking. When the packaging film is wrapped multiple times, the second cylinder 323 drives the support rod 324 to descend, and the support rod 324 can be pulled out from the inside of the packaging film after wrapping; and when the packaging film is wrapped, the first mounting plate 322 and the second cylinder 323 installed thereon are driven by the first cylinder 321 to move forward and backward, and the support rod 324 is moved to the set position, and the second cylinder 323 drives the support rod 324 to rise, and the packaging film bypasses the support rod 324 under the action of the rocker arm winding mechanism 2, so that the support rod 324 can support the inside of the packaging film, which is convenient for cutting the packaging film and clamping the new packaging film end, so as to facilitate the next winding of the packaging film. A vertically arranged first clamping plate 325 is provided on the side of the lower end of the support rod 324, and the side of the first mounting plate 322 away from the roller conveyor line 1 is rotatably connected to the third cylinder 326, and the upper end of the third cylinder 326 is rotatably connected to a rotating arm 327, and the rotating arm 327 is fixedly connected to a first rotating shaft 328, and the first rotating shaft 328 is horizontally rotatably installed on the upper end of the first mounting plate 322, and the first rotating shaft 328 is fixedly connected to a second clamping plate 329, and the second clamping plate 329 is arranged in cooperation with the first clamping plate 325. The first clamping plate 325 is used to cooperate with the second clamping plate 329 to clamp the end of the packaging film. By rotating the third cylinder 326 and the rotating arm 327, when the piston rod of the third cylinder 326 is extended or retracted, it can drive the rotating arm 327 to rotate, thereby driving the first rotating shaft 328 to rotate. The second clamping plate 329 can be driven to rotate through the first rotating shaft 328, so that the second clamping plate 329 and the first clamping plate 325 are clamped together to clamp the lower half of the end of the packaging film.

[0027] In the present application, the support rod 324 is a cylindrical long rod, which is convenient for the support rod 324 to be pulled out from the packaging film after winding; the clamping surfaces of the first clamping plate 325 and the second clamping plate 329 are both flat, which is convenient for clamping the end of the packaging film. The first clamping plate 325 and the second clamping plate 329 in the present application are made of flexible materials, which can ensure the effective clamping of the packaging film and prevent the end of the packaging film from being clamped. The first clamping plate 325 is set at the lower end of the support rod 324, which is used to clamp the lower half of the end of the packaging film, ensuring that the packaging film will not wrap around the first clamping plate 325 and the second clamping plate 329 when winding a full circle, so that the second clamping plate 329 can release the packaging film.

[0028] In the present application, the film breaking structure 33 includes a rotating bracket 331, the rotating bracket 331 is perpendicular to the roller conveyor line 1, the middle part of the rotating bracket 331 is rotatably connected to the second rotating shaft 332, the second rotating shaft 332 is horizontally installed on the fixed bracket 31, the end of the rotating bracket 331 close to the roller conveyor line 1 is rotatably connected to the fourth cylinder 333, the end of the fourth cylinder 333 away from the rotating bracket 331 is rotatably connected to the fixed bracket 31, the end of the rotating bracket 331 away from the roller conveyor line 1 is provided with a fifth cylinder 334 perpendicular to the rotating bracket 331, the fifth cylinder 334 is connected to a second mounting plate 335 parallel to the top of the rotating bracket 331, and the second mounting plate 335 is provided with a heating wire 336 parallel to it. Among them, the rotating bracket 331 is used for the installation of the heating wire 336. The rotating bracket 331 and the fourth cylinder 333 are rotatably installed on the fixed bracket 31. When the piston rod of the fourth cylinder 333 contracts, it can pull the rear end of the rotating bracket 331 to rotate downward, so that the rotating bracket 331 rotates around the second rotating shaft 332, driving the front end of the rotating bracket 331 to rotate upward, driving the second mounting plate 335 to rotate, so that it turns from a horizontal state to a vertical state, and turning the heating wire 336 into a vertical state. The second mounting plate 335 is driven by the fifth cylinder 334 to move forward and backward, thereby driving the heating wire 336 to move forward and backward, and the packaging film can be cut by the heating wire 336.

[0029] Among them, a pressure rod 337 is provided on the second mounting plate 335. The pressure rod 337 is a cylindrical long rod. The pressure rod 337 is arranged on the side of the heating wire 336 and is parallel to the heating wire 336. The pressure rod 337 in the present application is arranged on the left side of the heating wire 336. The heating wire 336 and the pressure rod 337 are driven to move backward synchronously through the second mounting plate 335. The pressure rod 337 first presses the packaging film onto the support rod 324 and presses backward to fit with the already wound packaging film. Then the heating wire 336 cuts the packaging film, which can prevent the heating wire 336 from cutting off multiple layers of packaging film at the same time. One end of the cut packaging film is attached to the already wound packaging film, and the end of the packaging film connected to the whole roll of packaging film is attached to the support rod 324. When the packaging film is wound counterclockwise and the winding is completed, the piston rod of the first cylinder 321 extends out, driving the first mounting plate 322 and the second cylinder 323 to move backward, the piston rod of the second cylinder 323 extends out, driving the support rod 324 to move upward to the set position, and then the rocker arm winding mechanism 2 drives the packaging film to bypass the support rod 324; then, the piston rod of the third cylinder 326 extends out, driving the rotating arm 327 to rotate, driving the first rotating shaft 328 and the second clamping plate 329 to rotate, and the second clamping plate 329 and the first clamping plate 325 clamp the packaging film; finally, the piston rod of the fourth cylinder 333 contracts, pulling the rear end of the rotating bracket 331 to rotate downward, turning the rotating bracket 331 to a vertical state, and then the fifth cylinder 336 The piston rod of cylinder 334 extends, driving the second mounting plate 335 to move backward, driving the pressure rod 337 and the heating wire 336 to move backward synchronously, and the pressure rod 337 presses the packaging film backward so that the packaging film sticks to the support rod 324, and then the heating wire 336 touches the packaging film to cut the packaging film. At this time, the end connected to the wound packaging film is attached to the packaging film on the carton, and the end connected to the whole roll of packaging film is attached to the support rod 324. At the same time, the second clamping plate 329 rotates backward under the action of the third cylinder 326, clamping the lower half of the end of the packaging film connected to the whole roll of packaging film between the first clamping plate 325 and the second clamping plate 329, and this clamping action cuts the packaging film before the heating wire 336 cuts off the packaging film.

[0030] In the present application, two guide assemblies 338 are provided between the second mounting plate 335 and the rotating bracket 331. The two guide assemblies 338 are symmetrically arranged on both sides of the fifth cylinder 334. The second mounting plate 335 is guided by the guide assemblies 338 to ensure smooth movement and accurate movement direction of the second mounting plate 335. The guide assembly 338 is composed of a guide rod and a linear bearing. The guide rod moves along the linear bearing to realize the guiding function of the guide assembly 338.

[0031] In the present application, the rocker arm winding mechanism 2 includes a stand 21, on which a rocker arm 22 is provided, the upper end of the rocker arm 22 is connected to a reduction motor 23, and the lower end of the rocker arm 22 is connected to a film frame 24. The reduction motor 23 can drive the rocker arm 22 to rotate, and then drive the mold frame 24 to rotate, so that the packaging film of the mold frame 24 can rotate around the side of the carton, thereby realizing the packaging film is wound around the carton. Among them, the rocker arm 22 includes a first arm 221 and a second arm 222 connected vertically, the first arm 221 is connected to the reduction motor 23, the second arm 222 is perpendicular to the top of the roller conveyor line 1, and the second arm 222 is provided with a lifting assembly 25 connected to the film frame 24. The reduction motor 23 drives the first arm 221 to rotate, and the first arm 221 drives the second arm 222 to rotate around the carton on the roller conveyor line 1, so as to drive the packaging film on the film frame 24 to wrap around the side of the carton. The lifting assembly 25 is used to drive the film frame 24 to move up and down, so that the film frame 24 can rotate around the carton and move upward synchronously to achieve film wrapping around the carton.

[0032] In the present application, the lifting assembly 25 includes a motor, a chain and a roller, wherein the motor is disposed at the upper end of the second arm 222, the roller is connected to the film frame 24 and is rotatably disposed on the second arm 222, and the motor and the roller are connected by a chain. The motor can drive the chain to rotate, thereby driving the roller to roll up and down along the second arm 222, thereby driving the film frame 24 connected to the roller to rise and fall along the second arm 222.

[0033] In the present application, a blowing pipe arranged obliquely upward is provided on the roller conveyor line 1, and the blowing pipe is connected to a fan. The fan can blow air to the blowing pipe, and the air outlet of the blowing pipe is obliquely facing the raised support rod 324 upward, and can blow air obliquely upward to the support rod 324, so that the packaging film on the support rod 324 can be spread upward, and will not fall down and stack the packaging film clamped by the first clamping plate 325 and the second clamping plate 325, thereby improving the beauty of the packaging film winding.

[0034] In the present application, the working process of the low-position rocker arm winding device is as follows: the packaging film is pre-installed on the film frame 24, and the lower half of the end of the packaging film is clamped between the first clamping plate 325 and the second clamping plate 329; first, the roller conveyor line 1 conveys the carton to the set station; then the film clamping and cutting mechanism 3 is actuated, and the first cylinder 321 of the film clamping structure 32 drives the second cylinder 323 to move to the front side of the carton and close to the right end of the carton, driving the support rod 324 to move synchronously to the front side of the carton and close to the right end of the carton; then, the rocker arm winding mechanism 2 is actuated, and the deceleration motor The machine 23 drives the rocker arm 22 to rotate, driving the film frame 24 and the packaging film thereon to rotate synchronously around the carton, and the packaging film is wound around the carton; when the rocker arm 22 rotates one circle, the packaging film on the film frame 24 just rotates around the initial position, and at this time the third cylinder 326 drives the rotating arm 327, the first rotating shaft 328 and the second clamping plate 329 to rotate, and the second clamping plate 329 is separated from the first clamping plate 325 to release the end of the packaging film; fourth, the rocker arm winding mechanism 2 continues to move, driving the film frame 24 to rotate around the carton, and at the same time the lifting assembly 25 drives the mold frame to rise first and then The packaging film is wound around the carton. When the packaging film is wound around two or more full circles, the second cylinder 323 drives the support rod 324 to descend and is pulled out from the inner side of the innermost packaging film. When the packaging film is wound around the set number of circles, the second cylinder 323 drives the support rod 324 to rise, and the rocker arm 22 drives the packaging film to bypass the support rod 324 and then stop. Fifth, the third cylinder 326 drives the rotating arm 327, the first rotating shaft 328 and the second clamping plate 329 to rotate, so that the second clamping plate 329 and the first clamping plate 325 clamp the packaging film at the position of the support rod 324. The lower half of the packaging film; Sixth, the film cutting structure 33 is actuated, the piston rod of the fourth cylinder 333 contracts, pulling the front end of the rotating bracket 331 to flip backward and upward, and rotating the rotating bracket 331 to a vertical state, and then the fifth cylinder 334 drives the second mounting plate 335 to move backward, and the heating wire 336 cuts the packaging film through electric heating; Finally, the first cylinder 321 drives the first mounting plate 322 to move forward, driving the support rod 324 to reset, and the fourth cylinder 333 and the fifth cylinder 334 are reset to complete the linear packaging film winding operation.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A low-position rocker arm winding device for packaging, comprising a roller conveyor line (1), characterized in that: A rocker arm winding mechanism (2) is mounted on the roller conveyor line (1), a film clamping and film cutting mechanism (3) is disposed below the rocker arm winding mechanism (2), the film clamping and film cutting mechanism (3) comprises a fixed bracket (31), and a film clamping structure (32) and a film cutting structure (33) are disposed on the fixed bracket (31); The film clamping structure (32) includes a first cylinder (321), the first cylinder (321) is horizontally arranged on a fixed bracket (31), the conveying direction of the first cylinder (321) is perpendicular to the conveying direction of the roller conveyor line (1), the first cylinder (321) is connected to a vertically arranged first mounting plate (322), a vertically arranged second cylinder (323) is arranged on the side of the first mounting plate (322) close to the roller conveyor line (1), the second cylinder (323) is connected to a vertically arranged support rod (324), the lower end of the support rod (324) A first clamping plate (325) is vertically arranged on the side; the side of the first mounting plate (322) away from the roller conveyor line (1) is rotatably connected to a third cylinder (326); the upper end of the third cylinder (326) is rotatably connected to a rotating arm (327); the rotating arm (327) is fixedly connected to a first rotating shaft (328); the first rotating shaft (328) is horizontally rotatably installed on the upper end of the first mounting plate (322); the first rotating shaft (328) is fixedly connected to a second clamping plate (329); the second clamping plate (329) is arranged in cooperation with the first clamping plate (325).

2. A low-position rocker arm wrapping device for packaging according to claim 1, characterized in that: The support rod (324) is a cylindrical long rod, and the clamping surfaces of the first clamping plate (325) and the second clamping plate (329) are both flat surfaces.

3. A low-position rocker arm wrapping device for packaging according to claim 1, characterized in that: The film cutting structure (33) comprises a rotating bracket (331), the rotating bracket (331) is perpendicular to the roller conveyor line (1), the middle part of the rotating bracket (331) is rotatably connected to a second rotating shaft (332), the second rotating shaft (332) is horizontally installed on the fixed bracket (31), the end of the rotating bracket (331) close to the roller conveyor line (1) is rotatably connected to a fourth cylinder (333), the end of the fourth cylinder (333) away from the rotating bracket (331) is rotatably connected to the fixed bracket (31), the end of the rotating bracket (331) away from the roller conveyor line (1) is provided with a fifth cylinder (334) perpendicular to the rotating bracket (331), the fifth cylinder (334) is connected to a second mounting plate (335) parallel to the top of the rotating bracket (331), and the second mounting plate (335) is provided with a heating wire (336) parallel to the second mounting plate (335).

4. A low-position rocker arm wrapping device for packaging according to claim 3, characterized in that: The second mounting plate (335) is provided with a pressure rod (337), the pressure rod (337) is a cylindrical long rod, and the pressure rod (337) is arranged on the side of the heating wire (336) and is parallel to the heating wire (336).

5. A low-position rocker arm wrapping device for packaging according to claim 3, characterized in that: Two guide assemblies (338) are provided between the second mounting plate (335) and the rotating bracket (331), and the two guide assemblies (338) are symmetrically arranged on both sides of the fifth cylinder (334).

6. A low-position rocker arm wrapping device for packaging according to claim 5, characterized in that: The guide assembly (338) is composed of a guide rod and a linear bearing.

7. A low-position rocker arm wrapping device for packaging according to claim 1, characterized in that: The rocker arm winding mechanism (2) comprises a stand (21), a rocker arm (22) is provided on the stand (21), the upper end of the rocker arm (22) is connected to a reduction motor (23), and the lower end of the rocker arm (22) is connected to a film frame (24).

8. A low-position rocker arm wrapping device for packaging according to claim 7, characterized in that: The rocker arm (22) comprises a first arm (221) and a second arm (222) which are vertically connected, wherein the first arm (221) is connected to a reduction motor (23), the second arm (222) is vertically disposed above the roller conveyor line (1), and the second arm (222) is provided with a lifting assembly (25) which is connected to a film frame (24).

9. A low-position rocker arm wrapping device for packaging according to claim 8, characterized in that: The lifting assembly (25) comprises a motor, a chain and a roller, wherein the motor is arranged at the upper end of the second arm (222), the roller is connected to the film frame (24) and is rollingly arranged on the second arm (222), and the motor and the roller are connected by a chain.

10. A low-position rocker arm wrapping device for packaging according to claim 1, characterized in that: The roller conveyor line (1) is provided with a blowing pipe arranged obliquely upward, and the blowing pipe is connected to a fan.

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