Triangular film guide plate lifting device for packaging film laminating machine

Abstract

The utility model discloses a triangular film guide plate lifting device of packaging laminating machine, including having installation bottom plate, still including intermediate section and screw rod, the top fixedly connected with fixed frame of installation bottom plate, the top fixedly connected with two slide bars of installation bottom plate, the top fixedly connected with the frame of the character of the Chinese character of slide bar, the front side fixedly connected with extension block of frame of the character of the Chinese character, the inside rotationally connected with drive shaft of extension block, the front end fixedly connected with hand wheel of drive shaft, the rear end fixedly connected with first connecting section of drive shaft, the inside rotationally connected with first universal joint of first connecting section, the outside rotationally connected with intermediate section of first universal joint, the inside rotationally connected with second universal joint of intermediate section far from first universal joint one end, the utility model is under the stress of screw rod, the rotationally connected with the first connecting section, first universal joint, intermediate section, second universal joint and second connecting section of the aid, make the space of reservation movement between screw rod and drive shaft, reduce transmission rigid impact, realize the buffer function to screw rod.

Description

Technical Field

[0001] This utility model relates to the field of packaging laminating machine technology, and in particular to a triangular guide plate lifting device for a packaging laminating machine. Background Technology

[0002] To prevent scratches during transportation, a protective film is usually wrapped around the outside of the packaging box. The most common protective film used for packaging boxes is heat shrink film. This heat shrink film is heated after being wrapped around the packaging box to cover the outside of the box and provide protection. During the packaging process, a triangular plate is used to stretch the heat shrink film so that the packaging box can be easily inserted into the heat shrink film. Therefore, the height of the triangular plate needs to be adjusted according to the size of the packaging box.

[0003] The triangular guide plate lifting device of a common packaging laminating machine relies solely on the lead screw to adjust the height of the triangular plate. However, this design lacks the necessary buffer function for the lead screw. When the heat shrink film applies a force in the direction of movement to the triangular plate during its movement, this pressure is directly transmitted to the lead screw. The stressed lead screw is prone to deformation or even breakage of its threads, causing it to lose its function of driving the triangular plate to rise and fall, ultimately leading to a significant reduction in the lifespan of the lead screw.

[0004] Therefore, in view of the lack of buffer function for the lead screw, when the heat shrink film moves on the triangular plate and applies force, the pressure is directly transmitted to the lead screw. After being stressed, the screw is prone to deformation and breakage, making it unable to drive the lifting and lowering, thus reducing the life of the lead screw. A triangular guide plate lifting device for packaging laminating machine can be designed. Utility Model Content

[0005] In order to overcome the lack of buffer function for the lead screw, when the heat shrink film moves on the triangular plate and applies force, the pressure is directly transmitted to the lead screw. After being stressed, the threads are prone to deformation and breakage, making the lead screw unable to drive lifting and lowering, thus reducing the life of the lead screw.

[0006] The technical solution of this utility model is as follows: a triangular guide plate lifting device for a packaging laminating machine, including a mounting base plate; it also includes an intermediate section and a lead screw. A fixed frame is fixedly connected to the top of the mounting base plate, and two sliding rods are fixedly connected to the top of the mounting base plate. A U-shaped frame is fixedly connected to the top of the sliding rods, and an extension block is fixedly connected to the front side of the U-shaped frame. A drive shaft is rotatably connected inside the extension block. A hand crank is fixedly connected to the front end of the drive shaft, and a first connecting section is fixedly connected to the rear end of the drive shaft. A first universal joint is rotatably connected to the inner side of the first connecting section, and an intermediate section is rotatably connected to the outer side of the first universal joint. A second universal joint is rotatably connected to the inner side of the intermediate section away from the first universal joint, and a second connecting section is rotatably connected to the outer side of the second universal joint. A lead screw is fixedly connected to the end of the second connecting section away from the second universal joint. A tensioning mechanism is provided on the sliding rod to ensure the tension of the heat shrink film. A film-supporting mechanism is provided on the sliding rod to support the heat shrink film.

[0007] Preferably, a complete universal drive structure is formed by combining the first connecting joint, the first universal joint, the intermediate joint, the second universal joint, and the second connecting joint. During the movement of the heat shrink film, when the pressure applied by the upper triangular guide plate and the lower triangular guide plate is transmitted to the lead screw, the lead screw will be subjected to force and move up and down. At this time, through the rotational connection between the first connecting joint, the first universal joint, the intermediate joint, the second universal joint, and the second connecting joint, a certain amount of movement space can be maintained between the lead screw and the drive shaft, thereby reducing the rigid impact during the transmission process, protecting the lead screw, and realizing the buffering function of the lead screw.

[0008] Preferably, the tensioning mechanism includes a fixing component and a film lifting component, wherein the fixing component is used to limit the position of the rod, and the film lifting component is used to lift the heat shrink film.

[0009] Preferably, the fixing component includes a fixing block disposed above the fixing frame, and the fixing block is fixedly connected to two sliding rods.

[0010] Preferably, the film lifting assembly includes a first tensioning rod fixed to the right side of the fixing block and a second tensioning rod fixed to the right side of the fixing block.

[0011] Preferably, the film-supporting mechanism includes a first film-guiding assembly and a second film-guiding assembly, wherein the first film-guiding assembly is used to support a portion of the heat-shrinkable film and the second film-guiding assembly is used to support another portion of the heat-shrinkable film.

[0012] Preferably, the first guide film assembly includes a drive block slidably connected to the outside of the two slide rods, a first connecting plate fixed to the bottom of the drive block, an upper triangular guide film plate fixed to the bottom of the first connecting plate, a fixing strip fixed to the bottom of the first connecting plate, and a lifting rod fixed to the rear side of the fixing strip. The drive block is threadedly connected to the lead screw, the first connecting plate is slidably connected to the two slide rods, and the first connecting plate is threadedly connected to the lead screw.

[0013] Preferably, the second guide film assembly includes a second connecting plate slidably connected to the outside of the two slide rods, and a lower triangular guide film plate fixedly connected to the top of the second connecting plate, wherein the second connecting plate is threadedly connected to the lead screw.

[0014] The beneficial effects of this utility model are: This universal joint transmission structure achieves a flexible connection between the lead screw and the drive shaft through the combination of a first connecting joint, a first universal joint, an intermediate joint, a second universal joint, and a second connecting joint. It provides movement space to buffer pressure transmission, significantly reduces rigid impact during transmission, effectively protects the lead screw from thread deformation or breakage, and ensures the reliability and durability of its lifting drive function. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model. Figure 2 The diagram shown is a schematic of the tensioning mechanism of this utility model; Figure 3 The diagram shown is a schematic representation of the triangular plate structure of this utility model. Figure 4 The diagram shown is a schematic representation of the universal linkage component of this utility model. Figure 5 This utility model is shown. Figure 4 Enlarged view of point A in the middle.

[0016] Explanation of reference numerals in the attached drawings: 1. Mounting base plate; 11. Fixing frame; 12. Slide rod; 13. C-shaped frame; 14. Extension block; 15. Drive shaft; 16. Hand crank; 17. First connecting joint; 18. First universal joint; 19. Intermediate joint; 20. Second universal joint; 21. Second connecting joint; 22. Lead screw; 311. Fixing block; 321. First tensioning rod; 322. Second tensioning rod; 411. Drive block; 412. First connecting plate; 413. Upper triangular guide plate; 414. Fixing strip; 415. Lifting rod; 421. Second connecting plate; 422. Lower triangular guide plate. Detailed Implementation

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

[0018] Please see Figures 1-5This utility model provides an embodiment of a triangular guide plate lifting device for a packaging laminating machine, including a mounting base plate 1; it also includes an intermediate section 19 and a lead screw 22. A fixed frame 11 is fixedly connected to the top of the mounting base plate 1, and two sliding rods 12 are fixedly connected to the top of the mounting base plate 1. A U-shaped frame 13 is fixedly connected to the top of the sliding rods 12, and an extension block 14 is fixedly connected to the front side of the U-shaped frame 13. A drive shaft 15 is rotatably connected inside the extension block 14. A hand crank 16 is fixedly connected to the front end of the drive shaft 15, and a first connecting section 17 is fixedly connected to the rear end of the drive shaft 15. A first universal joint 18 is rotatably connected to the inner side of the first connecting section 17, and an intermediate section 19 is rotatably connected to the outer side of the first universal joint 18. A second universal joint 20 is rotatably connected to the inner side of the intermediate section 19 away from the first universal joint 18, and a second connecting section 21 is rotatably connected to the outer side of the second universal joint 20. A lead screw 22 is fixedly connected to one end of the second universal joint 20. A tensioning mechanism is provided on the slide rod 12 to ensure the tension of the heat shrink film. A film-supporting mechanism is provided on the slide rod 12 to support the heat shrink film. The first connecting joint 17, the first universal joint 18, the intermediate joint 19, the second universal joint 20, and the second connecting joint 21 are combined to form a complete universal transmission structure. When the heat shrink film moves, the pressure applied by the upper triangular guide plate 413 and the lower triangular guide plate 422 is transmitted to the lead screw 22, and the lead screw 22 will move up and down under force. At this time, the rotational connection between the first connecting joint 17, the first universal joint 18, the intermediate joint 19, the second universal joint 20, and the second connecting joint 21 leaves a certain amount of movement space between the lead screw 22 and the drive shaft 15, reducing the rigid impact during the transmission process, thereby protecting the lead screw 22 and realizing the buffering function of the lead screw 22.

[0019] Please see Figures 2-5 In this embodiment, the tensioning mechanism includes a fixing component and a film lifting component. The fixing component is used to limit the position of the rod, and the film lifting component is used to lift the heat shrink film. The fixing component and the film lifting component are combined to form a complete tensioning mechanism. The two cooperate with each other to ensure the tension of the heat shrink film. The fixing component includes a fixing block 311 disposed above the fixing frame 11. The fixing block 311 is fixedly connected to two sliding rods 12. By fixing the first tensioning rod 321 and the second tensioning rod 322 to the fixing block 311, the first tensioning rod 321 and the second tensioning rod 322 are located on the rear side of the upper triangular guide plate 413. The film lifting component includes a first tensioning rod 321 fixed to the right side of the fixing block 311 and a second tensioning rod 322 fixed to the right side of the fixing block 311. The first tensioning rod 321 and the second tensioning rod 322 stretch the heat shrink film to maintain a certain tension.

[0020] Please see Figures 1-5In this embodiment, the film-supporting mechanism includes a first film-guiding assembly and a second film-guiding assembly. The first film-guiding assembly supports a portion of the heat-shrinkable film, and the second film-guiding assembly supports the other portion of the heat-shrinkable film. The first and second film-guiding assemblies are combined to form a complete film-supporting mechanism, which cooperates to expand the heat-shrinkable film. The first film-guiding assembly includes a drive block 411 slidably connected to the outside of the two slide rods 12, a first connecting plate 412 fixed to the bottom of the drive block 411, an upper triangular film-guiding plate 413 fixed to the bottom of the first connecting plate 412, a fixing strip 414 fixed to the bottom of the first connecting plate 412, and a film-lifting rod 415 fixed to the rear side of the fixing strip 414. The drive block 411 is threadedly connected to the lead screw 22, and the first connecting plate 412 is slidably connected to the two slide rods 12. Next, the drive shaft 15 is rotated by the hand crank 16. The drive shaft 15 drives the first universal joint 18 to rotate through the first connecting joint 17. The first universal joint 18 drives the intermediate joint 19 to rotate. The intermediate joint 19 drives the second universal joint 20 to rotate. The second universal joint 20 drives the lead screw 22 to rotate through the second connecting joint 21. The lead screw 22 drives the drive block 411 and the first connecting plate 412 to move up and down. The first connecting plate 412 drives the upper triangular guide plate 413 to move up and down. The second guide plate assembly includes a second connecting plate 421 slidably connected to the outside of the two slide rods 12 and a lower triangular guide plate 422 fixedly connected to the top of the second connecting plate 421. The second connecting plate 421 is threadedly connected to the lead screw 22. The lead screw 22 drives the second connecting plate 421 to move up and down. The second connecting plate 421 drives the lower triangular guide plate 422 to move up and down.

[0021] During operation, the hand crank 16 directly drives the drive shaft 15 connected to it to rotate synchronously. The rotational power of the drive shaft 15 is then smoothly transmitted through the first connecting joint 17 at its end. The first connecting joint 17 tightly drives the first universal joint 18 connected to it to rotate. The rotation of the first universal joint 18 effectively drives the intermediate joint 19 rigidly connected to it to rotate in the same direction. The intermediate joint 19 then reliably transmits this rotational motion to the second universal joint 20 connected to it, causing the second universal joint 20 to rotate as well. The rotational motion of the second universal joint 20 is then precisely transmitted to the lead screw 22 through the second connecting joint 21 at its end, thus ultimately driving the lead screw 22. 2. The screw 22 rotates stably around its own axis, and the rotational motion of the screw 22 is then converted into linear up-and-down movement of the drive block 411 mounted on it and the first connecting plate 412 fixed to the drive block 411 along the axial direction of the screw 22. The up-and-down displacement of the first connecting plate 412 directly drives the upper triangular guide plate 413, which is fixed to it, to move up or down synchronously. At the same time, the rotation of the screw 22 also acts on the second connecting plate 421, causing the second connecting plate 421 to also move up and down along the axial direction of the screw 22. The displacement of the second connecting plate 421 then pulls the lower triangular guide plate 422, which is fixed to it, to perform the corresponding up or down action. The ultimate purpose of this linkage mechanism is to precisely adjust... The height of the triangular plate structure formed by the upper triangular guide plate 413 and the lower triangular guide plate 422, during the continuous movement of the heat shrink film, if a working condition requiring greater tension is encountered, the pressure applied to the upper triangular guide plate 413 and the lower triangular guide plate 422 will be transmitted to the lead screw 22 itself through the first connecting plate 412, the second connecting plate 421 and its driving block 411. At this time, the lead screw 22 itself will bear this external force and produce a slight up-and-down movement along its axis. At the critical moment when the lead screw 22 undergoes this non-rotational axial displacement, thanks to the rotatable connection characteristics between the first connecting joint 17 and the drive shaft 15 and the first universal joint 18 in the transmission chain, and the inherent allowable angle of the first universal joint 18 itself, The articulation capability with varying degrees of freedom, the adaptability of the intermediate section 19 as a transmission rod, the angular freedom of the second universal joint 20, and the rotational connection design between the second connecting section 21, the second universal joint 20, and the lead screw 22—all these rotational connection points work together to form a spatially adaptable transmission chain. This allows the lead screw 22 to generate and accommodate a certain relative axial displacement space or gap with its original power source drive shaft 15. This design effectively absorbs the displacement difference generated by the axial movement of the lead screw 22, thereby significantly reducing the rigid impact force of the entire transmission system during power transmission and bearing reverse loads. It plays a crucial role in buffering and protecting the lead screw 22, which is located at the core of the force.

[0022] Through the above steps, when the lead screw 22 is under force, the rotational connection composed of the first connecting joint 17, the first universal joint 18, the intermediate joint 19, the second universal joint 20, and the second connecting joint 21 allows for movement space between the lead screw 22 and the drive shaft 15, reducing transmission rigidity impact and achieving a buffering function for the lead screw 22. This solves the problem of common triangular guide plate lifting devices in packaging laminating machines, which rely solely on the lead screw 22 for adjusting the height of the triangular plate. However, this design lacks the necessary buffering function for the lead screw 22. When the heat-shrink film moves on the triangular plate and applies force, the pressure is directly transmitted to the lead screw 22. Under force, the threads are prone to deformation and breakage, making it impossible for the lead screw 22 to drive the lifting and lowering, thus affecting the lifespan of the lead screw 22.

Claims

1. A triangular guide plate lifting device for a packaging laminating machine, comprising a mounting base plate (1); characterized in that: It also includes an intermediate section (19) and a lead screw (22). A fixed frame (11) is fixedly connected to the top of the mounting base plate (1). Two sliding rods (12) are fixedly connected to the top of the mounting base plate (1). A U-shaped frame (13) is fixedly connected to the top of the sliding rods (12). An extension block (14) is fixedly connected to the front side of the U-shaped frame (13). A drive shaft (15) is rotatably connected inside the extension block (14). A hand crank (16) is fixedly connected to the front end of the drive shaft (15). A first connecting section (17) is fixedly connected to the rear end of the drive shaft (15). The inner side of the first connecting section (17) rotates... A first universal joint (18) is connected. An intermediate joint (19) is rotatably connected to the outer side of the first universal joint (18). A second universal joint (20) is rotatably connected to the inner side of the intermediate joint (19) away from the first universal joint (18). A second connecting joint (21) is rotatably connected to the outer side of the second universal joint (20). A lead screw (22) is fixedly connected to the end of the second connecting joint (21) away from the second universal joint (20). A tensioning mechanism is provided on the slide rod (12) to ensure the tension of the heat shrink film. A film-supporting mechanism is provided on the slide rod (12) to support the heat shrink film.

2. The triangular guide plate lifting device of the packaging laminating machine according to claim 1, characterized in that: The tensioning mechanism includes a fixing component and a film lifting component. The fixing component is used to limit the position of the rod, and the film lifting component is used to lift the heat shrink film.

3. The triangular guide plate lifting device of the packaging laminating machine according to claim 2, characterized in that: The fixing component includes a fixing block (311) disposed above the fixing frame (11), and the fixing block (311) is fixedly connected to two sliding rods (12).

4. The triangular guide plate lifting device of the packaging laminating machine according to claim 3, characterized in that: The membrane lifting assembly includes a first tensioning rod (321) fixed to the right side of the fixing block (311) and a second tensioning rod (322) fixed to the right side of the fixing block (311).

5. The triangular guide plate lifting device of the packaging laminating machine according to claim 1, characterized in that: The film support mechanism includes a first film guide assembly and a second film guide assembly. The first film guide assembly is used to support a part of the heat shrink film, and the second film guide assembly is used to support another part of the heat shrink film.

6. The triangular guide plate lifting device of the packaging laminating machine according to claim 5, characterized in that: The first guide film assembly includes a drive block (411) slidably connected to the outside of two slide rods (12), a first connecting plate (412) fixed to the bottom of the drive block (411), an upper triangular guide film plate (413) fixed to the bottom of the first connecting plate (412), a fixing strip (414) fixed to the bottom of the first connecting plate (412), and a lifting rod (415) fixed to the rear side of the fixing strip (414). The drive block (411) is threadedly connected to the lead screw (22), the first connecting plate (412) is slidably connected to the two slide rods (12), and the first connecting plate (412) is threadedly connected to the lead screw (22).

7. The triangular guide plate lifting device of the packaging laminating machine according to claim 6, characterized in that: The second guide film assembly includes a second connecting plate (421) slidably connected to the outside of two slide rods (12), and a lower triangular guide film plate (422) fixedly connected to the top of the second connecting plate (421). The second connecting plate (421) is threadedly connected to the lead screw (22).

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