Novel integrated automatic film feeding and breaking mechanism

Abstract

The utility model relates to a novel integrated automatic film feeding and breaking mechanism which is characterized in that a film clamping component and a film breaking component are vertically connected to the same side of a connecting frame in parallel, and a film welding component is arranged opposite to the film clamping component and the film breaking component and connected to the adjacent side of the connecting frame; a swing arm cylinder is mounted at one end, in the length direction of the L-shaped bottom plate, of the mounting plate, a support is fixed to the other end, in the length direction of the L-shaped bottom plate, of the mounting plate, a fixing shaft is perpendicularly connected between the upper end of the support and the L-shaped vertical plate, and a swing arm is rotationally connected between the upper end of the support and the L-shaped vertical plate; the end, close to the L-shaped vertical plate, of the supporting block is hinged to the connecting frame through a connecting rod, and the end, away from the L-shaped vertical plate, of the supporting block is hinged to a connecting rod air cylinder through a hinge base. The automatic film feeding device improves the success rate of automatic film feeding and breaking, and is compact in structure and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of wrapping technology, specifically to a novel integrated automatic film-cutting mechanism. Background Technology

[0002] Currently, automatic wrapping machines generally use separate automatic film feeding devices and automatic film cutting and welding devices. During use, the distance between them needs to be adjusted to meet the requirements. The overall mechanism is relatively bulky and occupies a lot of space. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a novel integrated automatic film-cutting mechanism that integrates film-cutting, film-welding, and other functions into a single unit. It is easy to install, requires no adjustment during use, has a beautiful and compact appearance, occupies a small area, and is suitable for different pallet sizes.

[0004] This utility model is achieved through the following technical solution:

[0005] A novel integrated automatic film-cutting mechanism is provided, comprising a connecting frame, a film clamping assembly, a film welding assembly, and a film-cutting assembly. The film clamping assembly and the film-cutting assembly are vertically arranged side-by-side on the same side of the connecting frame, and the film welding assembly is arranged opposite to and connected to the film clamping assembly and the film-cutting assembly on an adjacent side of the connecting frame. It also includes a horizontally arranged mounting plate with an L-shaped cross-section. A swing arm cylinder is hinged to one end of the mounting plate along the length of the L-shaped base plate via a hinge seat. A bracket is vertically fixed to the other end of the mounting plate along the length of the L-shaped base plate, with the upper end of the bracket connected to the L-shaped base plate. A fixed shaft is vertically connected between the L-shaped uprights, and a swing arm is rotatably connected to the fixed shaft via bearings. The lower end of the swing arm is hinged to the piston rod end of the swing arm cylinder and can swing from 0 to 90°. The upper end of the swing arm is connected to a support block that is parallel to the fixed shaft in the length direction and is longer than the fixed shaft via a connecting plate. The end of the support block near the L-shaped upright is hinged to the connecting frame via a connecting rod. The end of the support block away from the L-shaped upright is hinged to a connecting rod cylinder via a hinge seat. The piston rod end of the connecting rod cylinder is hinged to the upper middle part of the connecting rod.

[0006] Furthermore, it also includes a mounting frame for connecting the mounting plate. The mounting frame has a guide groove fixedly installed on one side of the L-shaped upright plate, and a welding film baffle that can extend upward out of the guide groove and cooperate with the welding film assembly is slidably connected in the guide groove. The bottom of the welding film baffle is connected to a lifting cylinder below the guide groove.

[0007] The mounting frame is used to connect the mounting plate. The mounting frame is equipped with a guide groove and a sliding connection to the welding film baffle. The piston rod of the lifting cylinder can drive the welding film baffle to lift and lower, so that it can be raised before the packaging film is finished wrapping. It works with the film cutting mechanism to weld the film and ensure the welding and fixing of the packaging film after wrapping.

[0008] Preferably, the cross-section of the welding film baffle is arc-shaped, and the opening faces the welding film assembly.

[0009] By designing the welding film baffle as an arc-shaped plate, the contact area between its opening surface and the packaging film is reduced, thus reducing friction. After welding, it is easy to detach from the welded packaging film and is less likely to damage the packaging film.

[0010] Furthermore, the mounting plate has through holes on the L-shaped upright plate and is connected and fixed to the mounting frame by bolts and nuts.

[0011] Through holes are provided on the L-shaped upright plate of the mounting plate, which is connected and fixed to the mounting frame by bolts and nuts, making it easy to disassemble, install and maintain.

[0012] Furthermore, the film clamping assembly includes a film clamping arm vertically connected to the connecting frame. The side of the film clamping arm facing the packaging film has a vertically opened groove. A film clamping plate located outside the film clamping arm and perpendicular to the groove is slidably connected in the groove. The film clamping plate is connected to a sliding part in the inner cavity of the film clamping arm. A sliding groove is vertically provided in the inner cavity of the film clamping arm to slide with the sliding part. A film clamping cylinder is vertically installed in the inner cavity of the film clamping arm. The piston rod end of the film clamping cylinder is vertically connected to the film clamping plate.

[0013] The sliding groove on the clamping arm is used to guide and limit the clamping plate. The piston rod of the clamping cylinder pulls the sliding part at the bottom of the clamping plate to slide and connect in the sliding groove, so as to realize the clamping function of the clamping plate.

[0014] Furthermore, the welding film assembly includes a welding film cylinder that is horizontally mounted on the connecting frame. The piston rod end of the welding film cylinder is vertically connected to a fixing plate. The fixing plate has two through holes symmetrically opened on both sides of the piston rod, and a welding film pressure plate parallel to the fixing plate is movably connected to each of the two through holes on both sides through a guide rod and a spring.

[0015] The piston rod of the welding cylinder is connected to a fixed plate, on which a welding pressure plate is movably mounted. Through the setting of the guide rod and spring, the elastic force of the spring can be used to apply force after the welding pressure plate contacts the packaging film, so that it is tightly pressed against the packaging film, thereby improving the contact tightness between the welding pressure plate and the packaging film and ensuring the welding effect.

[0016] Furthermore, a heat-conducting groove is recessed on the side of the welding film pressure plate facing the packaging film. An electric heating rod is installed on the bottom surface of the heat-conducting groove. A heat-conducting copper plate with one side in contact with the electric heating rod is embedded in the heat-conducting groove. The other side of the heat-conducting copper plate is the welding film surface.

[0017] The heat-conducting groove of the welding film pressure plate is inlaid with a conductive copper plate. The heat is transferred to the heat-conducting copper plate by electric heating to reach the set temperature, so that the packaging film can be welded and fixed when the welding film pressure plate is pressed with the packaging film.

[0018] Furthermore, the membrane breaking assembly includes a fixed frame, with fixing grooves opened on the upper and lower horizontal sides of the fixed frame, and conductive slide rods installed in the fixing grooves. A power supply located in a vertical part of the fixed frame is connected between the two conductive slide rods. Conductive seats are slidably installed on the two conductive slide rods, and a membrane breaking heating wire is electrically connected between the two conductive seats.

[0019] When the energized slide bar is connected to the power supply, the conductive base becomes energized, which in turn causes the heating wire between the two conductive bases to be energized and heated to facilitate cutting of the packaging film.

[0020] Furthermore, electric push rods are installed in the fixing grooves on the upper and lower horizontal parts of the fixed frame, and the moving ends of the electric push rods are insulated from the corresponding conductive seats.

[0021] By using a reciprocating stepper electric push rod to drive the conductive base to move laterally back and forth, the film-cutting heating wire between the two conductive bases can move back and forth to cut the packaging film, which can improve the film-cutting efficiency. Moreover, as the packaging film passes through the fixed frame, the film-cutting heating wire can contact the packaging film on its moving path, without the need to adjust the position of the film-cutting heating wire and the packaging film in advance, thus ensuring stable film cutting.

[0022] The beneficial effects of this utility model are:

[0023] This invention can drive the swing arm to rotate 90° by a swing arm cylinder before the wrapping is finished. At the same time, the film welding baffle is raised and cooperates with the film welding assembly to weld the packaging film. After the packaging film is clamped by the film clamping assembly, the film cutting heating wire in the film cutting assembly moves back and forth to cut the film. It can realize automatic film welding, film clamping and film cutting. The actions between each step are stable and efficient, and the processing efficiency of packaging film is high.

[0024] This invention is applied in automatic wrapping equipment, which automatically cuts and welds the film while the equipment is running, and automatically applies the film, realizing unmanned automatic operation of the wrapping machine, improving the success rate of automatic film application and cutting, and has a compact structure and is easy to install. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0026] Figure 2 for Figure 1 A three-dimensional diagram of A.

[0027] Figure 3 This is a schematic diagram of the welding film assembly in this utility model.

[0028] Figure 4 for Figure 3 A cross-sectional view of the welding film pressure plate.

[0029] Figure 5 A schematic diagram of the structure of the interrupt membrane assembly of this utility model.

[0030] As shown in the figure:

[0031] 1. Mounting frame; 2. Lifting cylinder; 3. Mounting plate; 301. L-shaped upright plate; 302. L-shaped base plate; 4. Swing arm cylinder; 5. Swing arm; 6. Support block; 7. Connecting rod cylinder; 8. Film welding cylinder; 9. Film clamping arm; 10. Fixing frame; 11. Film welding pressure plate; 12. Connecting rod; 13. Film welding baffle; 14. Fixing shaft; 15. Guide groove; 16. Support; 17. Film cutting heating wire; 18. Connecting plate; 19. Connecting frame; 20. Film clamping plate; 21. Slide groove; 22. Fixing plate; 23. Guide rod; 24. Spring; 25. Heat-conducting copper plate; 26. Electric heating rod; 27. Electric push rod; 28. Conductive seat; 29. ​​Conductive slide rod; 30. Power supply assembly. Detailed Implementation

[0032] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0033] like Figures 1-5 As shown, a novel integrated automatic film-cutting mechanism includes a connecting frame 19, a film clamping assembly, a film welding assembly, and a film-cutting assembly. The film clamping assembly and the film-cutting assembly are vertically arranged side-by-side on the same side of the connecting frame 19. The film welding assembly is arranged opposite to and connected to the film clamping assembly and the film-cutting assembly on an adjacent side of the connecting frame 19. It also includes a horizontally arranged mounting plate 3 with an L-shaped cross-section. A swing arm cylinder 4 is hinged to one end of the mounting plate 3 along the length of the L-shaped base plate 302 via a hinge seat. A bracket 16 is vertically fixed to the other end of the mounting plate 3 along the length of the L-shaped base plate 302. The upper end of the bracket 16 is connected to the L-shaped upright plate 301. A fixed shaft 14 is vertically connected between the two, and a swing arm 5 is rotatably connected to the fixed shaft 14 via a bearing. The lower end of the swing arm 5 is hinged to the piston rod end of the swing arm cylinder 4 and can swing from 0 to 90°. The upper end of the swing arm 5 is connected to a support block 6 that is parallel to the fixed shaft 14 in the length direction and is longer than the fixed shaft 14 via a connecting plate 18. The end of the support block 6 near the L-shaped vertical plate 301 is hinged to the connecting frame 19 via a connecting rod 12. The end of the support block 6 away from the L-shaped vertical plate 301 is hinged to the connecting rod cylinder 7 via a hinge seat. The piston rod end of the connecting rod cylinder 7 is hinged to the upper middle part of the connecting rod 12.

[0034] It also includes a mounting frame 1 for connecting the mounting plate 3. The mounting frame 1 has a guide groove 15 vertically fixed on one side of the L-shaped upright plate 301, and a welding film baffle 13 that can extend upward out of the guide groove 15 and cooperate directly with the welding film assembly is slidably connected in the guide groove 15. The bottom of the welding film baffle 13 is connected to a lifting cylinder 2 below the guide groove 15. In this embodiment, the cross-section of the welding film baffle 13 is arc-shaped, and the opening faces the welding film assembly.

[0035] The mounting plate 3 has through holes in the L-shaped upright plate 301 and is connected and fixed to the mounting frame 1 by bolts and nuts.

[0036] The film clamping assembly includes a film clamping arm 9 vertically connected to a connecting frame. A groove 21 is vertically provided on the side of the film clamping arm 9 facing the packaging film. A film clamping plate 20 located outside the film clamping arm 9 and perpendicular to the groove 21 is slidably connected in the groove 21. A sliding part is connected to the film clamping plate 20 in the inner cavity of the film clamping arm 9. A sliding groove is vertically provided in the inner cavity of the film clamping arm 9 to slide with the sliding part. A film clamping cylinder is vertically installed in the inner cavity of the film clamping arm 9. The piston rod end of the film clamping cylinder is vertically connected to the film clamping plate 20.

[0037] The welding film assembly includes a welding film cylinder 8 that is horizontally mounted on a connecting frame 19. A fixing plate 22 is vertically connected to the piston rod end of the welding film cylinder 8. The fixing plate 22 has two through holes symmetrically opened on both sides of the piston rod, and a welding film pressure plate 11 parallel to the fixing plate 22 is movably connected to each of the two through holes on both sides through a guide rod 23 and a spring 24.

[0038] The side of the welding film pressure plate 11 facing the packaging film has a heat-conducting groove. An electric heating rod 26 is installed on the bottom surface of the heat-conducting groove. A heat-conducting copper plate 25 with one side abutting against the electric heating rod 26 is embedded in the heat-conducting groove. The other side of the heat-conducting copper plate 25 facing the heat-conducting copper plate 25 is the welding film surface.

[0039] The film-cutting assembly includes a fixed frame 10. Fixed grooves are formed on both the upper and lower horizontal sections of the fixed frame 10, and conductive slide rods 29 are installed within these grooves. A power supply 30 located in a vertical section of the fixed frame connects the two conductive slide rods 29. Conductive seats 28 are slidably mounted on each of the two conductive slide rods 29, and a film-cutting heating wire 17 is electrically connected between the two conductive seats 28. To ensure the limiting of the packaging film, a rotatable pressure roller is vertically installed on another vertical section of the fixed frame 10, facing the packaging film.

[0040] Electric push rods 27 are installed in the upper and lower horizontal parts of the fixed frame 10 in the fixed groove. The moving ends of the electric push rods 27 are insulated from the corresponding conductive seats 28.

[0041] The working process of this utility model:

[0042] For a stretch wrapping machine on a production line, this invention is installed on one side of the production line. In the initial state, the connecting frame 19 and the welding film assembly, film cutting assembly, and film clamping assembly on the connecting frame 19 are all horizontally arranged on one side of the production line. When the stretch wrapping machine is about to finish packaging the products on the pallet, the lifting cylinder 2 is activated first. The piston rod of the lifting cylinder 2 extends and drives the welding baffle 13 to rise vertically in the guide groove 15 and extend to the side of the product to be packaged. The stretch wrapping machine wraps normally and covers the welding baffle 13. When the number of wrapping turns of the packaging film is reached, the swing arm cylinder 4 is activated. The piston rod of the swing arm cylinder 4 drives the swing arm 5 to rotate on the fixed shaft 14, and the swing arm 5... Each component swings 90 degrees from the horizontal to the vertical, positioning it vertically on one side of the wrapped product. During the swing, the film is constrained in a fixed position by the stop roller on one side of the film-cutting component. The connecting rod cylinder 7 extends, pushing the connecting rod 12 to rotate via the piston rod. This causes the connecting frame 19 and the welding film assembly and film-cutting component on one side of the connecting frame 19 to come against the pallet goods. The welding film cylinder 8 extends to press the film-cutting component tightly against the wrapping film for welding. At this time, the heat-conducting copper plate 25 on the welding film pressure plate 11 is heated to a temperature that softens the packaging film by the electric heating rod 26. The welding time is controlled to retract the piston rod of the welding film cylinder 8. The welding ensures that the packaging film does not loosen or open, and there is no need to achieve melting. Simultaneously, the piston rod of the clamping cylinder 8 in the clamping component moves the clamping plate 20 downward to clamp the wrapping film. At the same time, the electric push rod 27 in the film-cutting component moves back and forth, which can drive the conductive seat 28 and the energized film-cutting heating wire 17 between them to move back and forth, thus breaking the wrapping film. The cutting efficiency is high and the film-cutting is stable.

[0043] After welding is completed, the connecting rod cylinder 7 reverses its movement, pulling the connecting rod 12 to pull the welding assembly, film cutting assembly, and film clamping assembly holding the packaging film on the connecting frame 19 back to their initial positions. At the same time, the lifting cylinder 2 reverses its movement, causing the welding baffle 13 to return downwards. At this time, the conveyor line starts and moves the packaged product to the next position. Simultaneously, the swing arm cylinder 4 starts, and the piston rod of the swing arm cylinder 4 pulls the swing arm 5, causing the whole assembly to swing from the vertical direction back to the horizontal direction, completing one film welding and film cutting process. By repeating the above operation, automatic film welding and film cutting operations can be performed on each wrapped product on the conveyor line.

[0044] This utility model uses a linkage mechanism to adjust the distance between the welding film pressure plate and the goods. Welding is performed through the welding plate, the film cutting assembly cuts the film, and the film clamping assembly clamps the film, so that the film application, welding, and film cutting are completed in one mechanism. The structure is compact and easy to install.

[0045] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A novel integrated automatic film-cutting mechanism, comprising a connecting frame, a film clamping assembly, a film welding assembly, and a film-cutting assembly, characterized in that: The film clamping assembly and the film cutting assembly are vertically arranged side by side on the same side of the connecting frame. The film welding assembly is arranged opposite to the film clamping assembly and the film cutting assembly and is connected to the adjacent side of the connecting frame. It also includes a horizontally arranged mounting plate with an L-shaped cross section. At one end of the mounting plate along the length of the L-shaped base plate, a swing arm cylinder is hinged to the mounting plate via a hinge seat. At the other end of the mounting plate along the length of the L-shaped base plate, a bracket is vertically fixed. The upper end of the bracket is vertically connected to the L-shaped upright plate via a fixed shaft. A swing arm is rotatably connected to the fixed shaft via a bearing. The lower end of the swing arm is hinged to the piston rod end of the swing arm cylinder and can swing from 0 to 90°. The upper end of the swing arm is connected to a support block that is parallel to the fixed shaft along its length and is longer than the fixed shaft via a connecting plate. The end of the support block near the L-shaped upright plate is hinged to the connecting frame via a connecting rod. The end of the support block away from the L-shaped upright plate is hinged to a connecting rod cylinder via a hinge seat. The piston rod end of the connecting rod cylinder is hinged to the upper middle part of the connecting rod.

2. The novel integrated automatic film-cutting mechanism according to claim 1, characterized in that: It also includes a mounting frame for connecting the mounting plate. The mounting frame has a guide groove fixed vertically on one side of the L-shaped upright plate, and a welding film baffle that can extend upward out of the guide groove and cooperate with the welding film assembly is slidably connected in the guide groove. The bottom of the welding film baffle is connected to a lifting cylinder below the guide groove.

3. The novel integrated automatic film-cutting mechanism according to claim 2, characterized in that: The cross-section of the welding film baffle is arc-shaped, and the opening faces the welding film assembly.

4. The novel integrated automatic film-cutting mechanism according to claim 2, characterized in that: The mounting plate has through holes on the L-shaped upright plate and is connected and fixed to the mounting frame by bolts and nuts.

5. The novel integrated automatic film-cutting mechanism according to claim 1, characterized in that: The film clamping assembly includes a film clamping arm vertically connected to a connecting frame. A vertical groove is provided on the side of the film clamping arm facing the packaging film. A film clamping plate located outside the film clamping arm and perpendicular to the groove is slidably connected in the groove. A sliding part is connected to the film clamping plate in the inner cavity of the film clamping arm. A sliding groove is vertically provided in the inner cavity of the film clamping arm to slide with the sliding part. A film clamping cylinder is vertically installed in the inner cavity of the film clamping arm. The piston rod end of the film clamping cylinder is vertically connected to the film clamping plate.

6. The novel integrated automatic film-cutting mechanism according to claim 1, characterized in that: The welding film assembly includes a welding film cylinder mounted laterally on a connecting frame. A fixing plate is vertically connected to the piston rod end of the welding film cylinder. The fixing plate has two through holes symmetrically opened on both sides of the piston rod, and a welding film pressure plate parallel to the fixing plate is movably connected to each of the two through holes on both sides through a guide rod and a spring.

7. The novel integrated automatic film-cutting mechanism according to claim 6, characterized in that: The side of the welding film pressure plate facing the packaging film has a recessed heat-conducting groove. An electric heating rod is installed on the bottom surface of the heat-conducting groove. A heat-conducting copper plate with one side in contact with the electric heating rod is embedded in the heat-conducting groove. The other side of the heat-conducting copper plate is the welding film surface.

8. The novel integrated automatic film-cutting mechanism according to claim 1, characterized in that: The membrane breaking assembly includes a fixed frame. Fixed grooves are opened on the upper and lower horizontal parts of the fixed frame, and conductive slide rods are installed in the fixed grooves. A power supply located in a vertical part of the fixed frame is connected between the two conductive slide rods. Conductive seats are slidably installed on the two conductive slide rods, and a membrane breaking heating wire is electrically connected between the two conductive seats.

9. The novel integrated automatic film-cutting mechanism according to claim 8, characterized in that: Electric push rods are installed in the fixing grooves on the upper and lower horizontal parts of the fixed frame, and the moving ends of the electric push rods are insulated from the corresponding conductive seats.

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