Inner folding and flanging device for plastic film

Abstract

The utility model discloses an inner folding and flanging device for a plastic film, which comprises a bottom inserting template used for supporting the plastic film, providing a matching position for the processing of the plastic film and forming a folding included angle; the inner folding assembly comprises a film pressing roller and a folding and pressing wheel disc, the film pressing roller is matched with the bottom inserting template to eject the folding edge part of the plastic film into the matched folding included angle, and the folding and pressing wheel disc is matched with the bottom inserting template to press the folded part of the plastic film into a crease; and the flanging assembly comprises a conical rolling rod and a mounting assembly, the mounting assembly elastically abuts against the conical head and the bottom inserting template through a conical rolling rod body, and the conical head rolls the part, wrapping the bottom inserting template, of the aligned edge of the plastic film to form creases. Through the design, when the plastic film is processed, the inner folding process and the inner flanging process can be carried out at the same time, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of plastic film processing equipment, and particularly relates to an inner folding and flanging device for plastic films. Background Art

[0002] With the development of society, the demand for plastic packaging bags for various commodities is becoming more and more diverse. Different processing equipment and manufacturing steps are required for plastic packaging bags of various shapes. As shown in Figure 1 , (a) shows a cross-sectional view of a plastic film folded once, and (b) shows a schematic diagram of the shape that the plastic film needs to be processed into. When this kind of plastic bag is processed and formed, different processing treatments need to be carried out on the aligned edge and the folded edge of the plastic film folded once. Among them, the aligned edge needs to be flanged inward, and the folded edge needs to be folded inward. The common practice in the industry is to process them in two stations, but this method is inefficient and cannot meet the actual production capacity requirements. Therefore, it is necessary to provide an inner folding and flanging device for plastic films that can process the aligned edge and the inner flange simultaneously. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an inner folding and flanging device for plastic films to solve the technical problem that when a plastic bag is processed and formed, different processing treatments need to be carried out on the aligned edge and the folded edge of the plastic film folded once. Among them, the aligned edge needs to be flanged inward, and the folded edge needs to be folded inward again. The common practice in the industry is to process them in two stations, but this method is inefficient and cannot meet the actual production capacity requirements.

[0004] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0005] An inner folding and flanging device for plastic films, used for the processing of plastic films, includes:

[0006] An inserting bottom template, the inserting bottom template is installed on an adjusting component. The inserting bottom template includes an upper template and a lower template. The upper template and the lower template are symmetrically arranged in the height direction. The upper template and the lower template gradually approach each other along the advancing direction of the plastic film to form a mating folding angle. The adjusting component is used to adjust the position of the inserting bottom template. The inserting bottom template is used to support the plastic film and provide a mating position for the processing of the plastic film;

[0007] An inner folding component, the inner folding component includes a film pressing roller and a folding and pressing wheel disc. The film pressing roller and the folding and pressing wheel disc are arranged in sequence along the advancing direction of the plastic film. The film pressing roller is installed on the adjusting component. The folding and pressing wheel disc is fixedly installed on a fixed block. The film pressing roller cooperates with the inserting bottom template to push the folded edge part of the plastic film into the mating folding angle. The folding and pressing wheel disc cooperates with the inserting bottom template to press out a crease on the folded part of the plastic film;

[0008] A flanging assembly, the flanging assembly includes a conical roller rod and an installation assembly, the installation assembly is installed in cooperation with the conical roller rod, the conical roller rod includes a conical roller rod body and a conical head, the installation assembly elastically supports the conical head and the bottom insert template through the conical roller rod body, and the conical head rolls out a crease on the part of the aligned edge of the plastic film covered on the bottom insert template.

[0009] Through such a design, when processing the plastic film, the inner folding and inner flanging processes can be carried out simultaneously, which greatly improves the work efficiency.

[0010] Preferably, the adjustment component comprises a bottom template adjustment component, an adjustment base and a film pressing roller slider, the bottom template adjustment component is used to install the bottom template, the film pressing roller slider is used to install the film pressing roller, and the adjustment base has height and horizontal direction adjustments;

[0011] The adjusting base includes a mounting base, a guide column, a fixed vertical plate, a screw rod mounting plate, a screw rod and a lifting slider in the height direction. The guide column and the fixed vertical plate are mounted on the mounting base in the height direction. The screw rod mounting plate is mounted on the top of the fixed vertical plate and supported by the guide column. The lifting slider is slidably mounted on the guide column. The screw rod is rotatably mounted on the screw rod mounting plate. The screw rod is installed in cooperation with the lifting slider to convert the rotational motion of the screw rod into the up and down motion of the lifting slider.

[0012] The adjusting base includes a guide rail shaft, an adjusting rod mounting end, a fixed end, a support rod, an adjustable support rod, a mounting base adjusting rod and an auxiliary guide block in the horizontal direction. The adjustable support rod supports the adjusting rod mounting end and the fixed end at a suitable distance and fixes them through the support rod. The guide rail shaft passes through the auxiliary guide block and the mounting base and is erected between the adjusting rod mounting end and the fixed end. The mounting base adjusting rod passes through the adjusting rod mounting end and the auxiliary guide block and is threadedly connected to the mounting base. The mounting base adjusting rod realizes horizontal movement of the mounting base by rotation.

[0013] Through such a design, the bottom template can be adjusted in the height and horizontal directions, and the overall stability of the equipment is guaranteed through the design of the guide structure.

[0014] Preferably, the bottom-inserting template adjusting assembly includes a guiding mounting plate, a rotating handle, a locking block, and a bottom-inserting template slider. The bottom-inserting template is fixedly installed with the bottom-inserting template slider. The bottom-inserting template slider is slidably installed on the guiding mounting plate. One end of the rotating handle is fixedly connected to the guiding mounting plate. The other end of the rotating handle passes through the opening of the fixed vertical plate and the lifting slider and is fixed to the lifting slider through the locking block. By rotating the rotating handle, the inclination angle of the bottom-inserting template can be adjusted. Through such a design, the convenient adjustment of the bottom-inserting template in the horizontal direction is realized, and the folding angle formed between the upper template and the lower template can be adjusted to meet the processing requirements of plastic films of various sizes.

[0015] Preferably, the film pressing roller slider is slidably sleeved on the guide rail shaft. The film pressing roller slider is penetrated by the mounting base adjusting rod without contact. The adjusting rod mounting end is also provided with a film pressing roller slider adjusting rod. The film pressing roller slider adjusting rod passes through the adjusting rod mounting end and is in threaded cooperation with the film pressing roller slider. The film pressing roller slider adjusting rod converts its own rotational motion into the horizontal motion of the film pressing roller slider. Through such a design, the volume ratio of the film pressing roller entering the folding angle can be adjusted to meet the adjustable depth required for the inner folding of the folding edge of different plastic films.

[0016] Preferably, the mounting assembly includes an adjusting fixing plate, a detachable fixing rod, a long-handle lever seat, a tension spring, a tension spring seat, and a tension spring stretching screw. The adjusting fixing plate is provided with a disassembly and assembly mating hole. The detachable fixing rod is fitted and installed in the disassembly and assembly mating hole. The end of the detachable fixing rod is provided with a fastening part. The long-handle lever seat is inserted into the fastening part. One end of the long-handle lever seat is rotatably connected to the tapered roller rod body in a matching manner, and the other end is used for installing the tension spring seat. The tension spring stretching screw is rotatably fixed on the tension spring seat. The tension spring elastically connects the tension spring stretching screw and the end of the tapered roller rod body. Through such a design, the pressing of the plastic film against the bottom-inserting die by the tapered roller is realized by relying on the elastic deformation of the tension spring.

[0017] Preferably, there are two groups of bottom-inserting templates. One group is used for the inner folding of the folding edge of the plastic film, and the other group is used for the inner turning edge of the alignment edge of the plastic film. Through such a design, when the folding edge is subjected to inner folding processing and the alignment edge is subjected to inner turning edge processing, there is more space, and the size of the plastic film that can be processed is expanded.

[0018] Preferably, the fixed block is provided with a wheel disc mounting rod. The folding and pressing wheel disc is sleeved on the wheel disc mounting rod through a bearing. Through such a design, the folding and pressing wheel disc itself has no power drive and rolls by the frictional force generated by the advancement of the plastic film. The design of the bearing makes the folding and pressing wheel disc roll more smoothly and prevents the plastic film from being torn due to jamming.

[0019] Preferably, a roller mounting rod is provided on the film pressing roller slider, and the film pressing roller is mounted on the roller mounting rod through a bearing. With this design, the film pressing roller itself has no power drive and rolls by the frictional force generated by the advancement of the plastic film. The design of the bearing makes the film pressing roller roll more smoothly and prevents tearing of the plastic film caused by jamming.

[0020] Preferably, the conical head of the conical roller rod is made of a material with a large frictional force such as rubber. With this design, the conical roller rod itself has no power drive and rolls by the frictional force generated by the advancement of the plastic film. Making the conical head of a material with a large frictional force such as rubber increases the frictional force between the conical head and the plastic film, making it more efficient for the plastic film to drive the conical roller rod to rotate.

[0021] The beneficial effects of the present utility model are as follows: When processing the plastic film, the inner folding and inner flanging processes can be carried out simultaneously, greatly improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the plastic film of the present utility model, where (a) is the plastic film folded once, and (b) is a schematic diagram of the folded structure that the plastic film needs to be processed into;

[0023] Figure 2 It is a schematic diagram of the first perspective of the overall structure of the present utility model;

[0024] Figure 3 It is a schematic structural diagram of the overall (removing the upper template) structure of the present utility model;

[0025] Figure 4 It is a schematic diagram of the second perspective of the overall structure of the present utility model;

[0026] Figure 5 It is a schematic structural diagram of the overall structure (on the side of the adjusting component) of the present utility model;

[0027] Figure 6 It is a schematic structural diagram of the guiding mounting plate, rotating handle and locking block of the present utility model;

[0028] Figure 7 It is a schematic partial structural diagram of the adjusting component of the present utility model;

[0029] Figure 8 It is a schematic structural diagram of the adjusting fixing plate and the flanging component of the present utility model;

[0030] Figure 9 It is a schematic structural diagram of the flanging component of the present utility model;

[0031] Marking descriptions in the figure: 1. Bottom - inserting template; 2. Upper template; 3. Lower template; 4. Plastic film; 5. Folding angle; 6. Film - pressing roller; 7. Folding and pressing wheel disc; 8. Fixed block; 9. Tapered roller rod; 10. Tapered roller rod body; 11. Tapered head; 12. Film - pressing roller slider; 13. Installation base; 14. Guide post; 15. Fixed vertical plate; 16. Screw rod installation plate; 17. Screw rod; 18. Lifting slider; 19. Guide rail shaft; 20. Adjusting rod installation end; 21. Fixed end; 22. Support rod; 23. Adjustable support rod; 24. Installation base adjusting rod; 25. Auxiliary guide block; 26. Guide installation plate; 27. Rotating handle; 28. Locking block; 29. Bottom - inserting template slider; 30. Opening; 32. Film - pressing roller slider adjusting rod; 33. Adjusting fixed plate; 34. Removable fixed rod; 35. Long - handle lever seat; 36. Pulling spring; 37. Pulling spring seat; 38. Pulling spring stretching screw rod; 39. Disassembly and assembly mating hole; 40. Tightening part; 41. Wheel disc installation rod; 42. Roller installation rod. Detailed implementation mode

[0032] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0033] As Figures 1 to 9 shown:

[0034] Embodiment 1

[0035] An in - folding and flanging device for a plastic film 4, used for processing the plastic film 4, includes:

[0036] A bottom - inserting template 1, the bottom - inserting template 1 is installed on an adjusting component. The bottom - inserting template 1 includes an upper template 2 and a lower template 3. The upper template 2 and the lower template 3 are symmetrically arranged in the height direction. The upper template 2 and the lower template 3 gradually approach along the advancing direction of the plastic film 4 to form a mating folding angle 5. The adjusting component is used to adjust the position of the bottom - inserting template 1. The bottom - inserting template 1 is used to support the plastic film 4 and provide a mating position for the processing of the plastic film 4;

[0037] Inner folding component, the inner folding component includes a film pressing roller 6 and a folding and pressing wheel disc 7. The film pressing roller 6 and the folding and pressing wheel disc 7 are arranged in sequence along the advancing direction of the plastic film 4. The film pressing roller 6 is installed on the adjusting component, and the folding and pressing wheel disc 7 is fixedly installed on a fixed block 8 (the fixed block 8 is installed on a device base not shown in the drawing). The film pressing roller 6 cooperates with the bottom inserting template 1 to push the folded edge part of the plastic film 4 into the mating folding angle 5, and the folding and pressing wheel disc 7 cooperates with the bottom inserting template 1 to press a crease on the folded part of the plastic film 4;

[0038] Flanging component, the flanging component includes a tapered roller rod 9 and an installation component. The installation component is cooperatively installed with the tapered roller rod 9. The tapered roller rod 9 includes a tapered roller rod body 10 and a tapered head 11. The installation component elastically holds the tapered head 11 against the bottom inserting template 1 through the tapered roller rod body 10, and the tapered head 11 rolls a crease on the part of the aligned edge of the plastic film 4 wrapped on the bottom inserting template 1.

[0039] The implementation manner of the above embodiment is as follows: The plastic film 4 that has been folded once wraps the upper template 2 and the lower template 3. Among them, the folded edge cooperates with the inner folding component. First, the film pressing roller 6 guides the folded edge to make it concave into the folding angle 5. Then, as the upper template 2 and the lower template 3 approach each other, the remaining amount of the plastic film 4 that can enter the folding angle 5 becomes more, and then the folding and pressing wheel disc 7 rolls and presses a crease on the plastic film 4. For the aligned edge of the plastic film 4, first, the operator presses the aligned edge of the plastic film 4 against the lower surface of the upper die and the upper surface of the lower die through the tapered roller rod 9. After the equipment is started, the tapered roller rod 9 will roll and press a crease on the aligned edge of the plastic film 4 as the plastic film 4 advances.

[0040] Embodiment 2

[0041] The adjusting component includes a bottom inserting template 1 adjusting component, an adjusting base, and a film pressing roller slider 12. The bottom inserting template 1 adjusting component is used to install the bottom inserting template 1, and the film pressing roller slider 12 is used to install the film pressing roller 6. The adjusting base has adjustments in the height direction and the horizontal direction;

[0042] The adjusting base includes an installation base 13, a guiding column 14, a fixed vertical plate 15, a lead screw installation plate 16, a lead screw 17, and a lifting slider 18 in the height direction. The guiding column 14 and the fixed vertical plate 15 are installed on the installation base 13 along the height direction. The lead screw installation plate 16 is installed at the top of the fixed vertical plate 15 and is supported by the guiding column 14. The lifting slider 18 is slidably installed on the guiding column 14. The lead screw 17 is rotatably installed on the lead screw installation plate 16. The lead screw 17 is cooperatively installed with the lifting slider 18 to convert the rotational motion of the lead screw 17 into the up and down motion of the lifting slider 18;

[0043] The adjustment base includes a guide rail shaft 19, an adjustment rod mounting end 20, a fixed end 21, a support rod 22, an adjustable support rod 23, a mounting base adjustment rod 24 and an auxiliary guide block 25 in the horizontal direction. The adjustable support rod 23 props the adjustment rod mounting end 20 and the fixed end 21 at a suitable distance and fixes them through the support rod 22. The guide rail shaft 19 passes through the auxiliary guide block 25 and the mounting base 13 and is erected between the adjustment rod mounting end 20 and the fixed end 21. The mounting base adjustment rod 24 passes through the adjustment rod mounting end 20 and the auxiliary guide block 25 and is threadedly connected to the mounting base 13. The mounting base adjustment rod 24 realizes horizontal movement of the mounting base 13 by rotation.

[0044] The implementation of the above embodiment is as follows:

[0045] The bottom template 1 adjustment component is installed on the lifting slider 18, and the lifting slider 18 moves up and down through the screw rod 17 to drive the bottom template 1 adjustment component to move up and down. The mounting base adjustment rod 24 also controls the horizontal displacement of the mounting base 13 through the screw rod 17. The support rod 22 and the adjustable support rod 23 cooperate to ensure that the adjustment rod mounting end 20 and the fixed end 21 are firmly fixed.

[0046] Example 3

[0047] The bottom template 1 adjustment assembly includes a guide mounting plate 26, a rotating handle 27, a locking block 28 and a bottom template slider 29. The bottom template 1 is fixedly mounted with the bottom template slider 29. The bottom template slider 29 is slidably mounted on the guide mounting plate 26. One end of the rotating handle 27 is fixedly connected to the guide mounting plate 26. The other end of the rotating handle 27 passes through the opening 30 of the fixed vertical plate 15 and the lifting slider 18 and is fixed to the lifting slider 18 through the locking block 28. The inclination angle of the bottom template 1 can be adjusted by rotating the rotating handle 27.

[0048] The implementation method of the above embodiment is: by rotating the rotating handle 27 to drive the guide mounting plate to tilt, so that an angle can be formed between the upper template 2 and the lower template 3, the locking block 28 can be adjusted by the internal angle screw, and the locking block 28 is loosened when the handle 27 needs to be rotated, and the locking block 28 is tightened after the adjustment is completed.

[0049] Example 4

[0050] The film pressing roller slider 12 is slidably sleeved on the guide rail shaft 19. The film pressing roller slider 12 is penetrated by the installation base adjusting rod 24 without contact. The adjusting rod installation end 20 is further provided with a film pressing roller slider adjusting rod 32. The adjusting rod of the film pressing roller slider 12 passes through the adjusting rod installation end 20 and is in threaded cooperation with the film pressing roller slider 12. The adjusting rod of the film pressing roller slider 12 converts its rotational motion into the horizontal motion of the film pressing roller slider 12.

[0051] The implementation manner of the above embodiment is as follows:

[0052] By screwing the film pressing roller slider adjusting rod 32, the film pressing roller slider 12 drives the film pressing roller 6 to displace in the horizontal direction, realizing that the volume ratio of the film pressing roller 6 entering the folding angle 5 is adjustable, so as to adapt to the adjustable depth required for the inner folding processing of the folding edge of different plastic films 4.

[0053] Embodiment 5

[0054] The installation component includes an adjusting fixing plate 33, a detachable fixing rod 34, a long handle lever seat 35, a tension spring 36, a tension spring seat 37 and a tension spring stretching screw rod 38. The adjusting fixing plate 33 is provided with a disassembly and assembly fitting hole 39. The detachable fixing rod 34 is fitted and installed in the disassembly and assembly fitting hole 39. The end of the detachable fixing rod 34 is provided with a fastening part 40. The long handle lever seat 35 is inserted into the fastening part 40. One end of the long handle lever seat 35 is rotatably connected with the tapered roller rod body 10 in a matching manner, and the other end is used for installing the tension spring seat 37. The tension spring stretching screw rod 38 is rotatably fixed on the tension spring seat 37. The tension spring 36 elastically connects the tension spring stretching screw rod 38 and the end of the tapered roller rod body 10.

[0055] The implementation manner of the above embodiment is as follows:

[0056] Adjust the stretching rod of the tension spring 36 to make the deformation degree of the tension spring 36 larger. When the deformation degree of the tension spring 36 becomes larger, the lifting force of the conical head 11 of the tapered roller rod 9 will become larger, thereby regulating the tightness of the tapered roller rod 9 against the plastic film 4.

[0057] Embodiment 6

[0058] Two groups of the bottom inserting templates 1 are provided. One group is for the inner folding of the folding edge of the plastic film 4, and the other group is for the inner turning edge of the alignment edge of the plastic film 4.

[0059] The fixed block 8 is provided with a wheel disc installation rod 41. The folding and pressing wheel disc 7 is sleeved on the wheel disc installation rod 41 through a bearing.

[0060] The film pressing roller slider 12 is provided with a roller installation rod 42. The film pressing roller 6 is installed on the roller installation rod 42 through a bearing.

[0061] The conical head 11 of the conical roller rod 9 is made of a material with a large frictional force such as rubber.

[0062] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A plastic film inner folding and flanging device, used for processing plastic film (4), characterized in that: include: A bottom inserting template (1), the bottom inserting template (1) is mounted on an adjustment component, the bottom inserting template (1) comprises an upper template (2) and a lower template (3), the upper template (2) and the lower template (3) are symmetrically arranged in a height direction, the upper template (2) and the lower template (3) gradually approach each other along the advancing direction of the plastic film (4) to form a matching folding angle (5), the adjustment component is used to adjust the position of the bottom inserting template (1), the bottom inserting template (1) is used to support the plastic film (4) and provide a matching position for processing the plastic film (4); An inner folding component, the inner folding component comprising a film pressing roller (6) and a folding wheel disc (7), the film pressing roller (6) and the folding wheel disc (7) being arranged in sequence along the advancing direction of the plastic film (4), the film pressing roller (6) being mounted on the adjusting component, the folding wheel disc (7) being fixedly mounted on a fixed block (8), the film pressing roller (6) cooperating with the bottom inserting template (1) to push the folded edge portion of the plastic film (4) into the cooperating folding angle (5), the folding wheel disc (7) cooperating with the bottom inserting template (1) to press a crease on the folded portion of the plastic film (4); A flanging assembly, the flanging assembly comprising a conical roller (9) and a mounting assembly, the mounting assembly being mounted in cooperation with the conical roller (9), the conical roller (9) comprising a conical roller body (10) and a conical head (11), the mounting assembly elastically supporting the conical head (11) against the inserting template (1) through the conical roller body (10), the conical head (11) rolling out a fold on the portion of the aligned edge of the plastic film (4) covering the inserting template (1).

2. The plastic film inner folding and flanging device according to claim 1, characterized in that: The adjustment component comprises a bottom inserting template (1) adjustment component, an adjustment base and a film pressing roller slider (12); the bottom inserting template (1) adjustment component is used to install the bottom inserting template (1); the film pressing roller slider (12) is used to install the film pressing roller (6); and the adjustment base is adjustable in height and horizontal directions; The adjusting base comprises, in the height direction, a mounting base (13), a guide column (14), a fixed vertical plate (15), a screw rod mounting plate (16), a screw rod (17) and a lifting slider (18); the guide column (14) and the fixed vertical plate (15) are mounted on the mounting base (13) in the height direction; the screw rod mounting plate (16) is mounted on the top of the fixed vertical plate (15) and supported by the guide column (14); the lifting slider (18) is slidably mounted on the guide column (14); the screw rod (17) is rotatably mounted on the screw rod mounting plate (16); the screw rod (17) and the lifting slider (18) are mounted in cooperation so as to convert the rotational movement of the screw rod (17) into the up-and-down movement of the lifting slider (18); The adjustment base comprises a guide rail shaft (19), an adjustment rod mounting end (20), a fixed end (21), a support rod (22), an adjustable support rod (23), a mounting base adjustment rod (24) and an auxiliary guide block (25) in the horizontal direction. The adjustable support rod (23) supports the adjustment rod mounting end (20) and the fixed end (21) at a suitable distance and fixes them together through the support rod (22). The guide rail shaft (19) passes through the auxiliary guide block (25) and the mounting base (13) and is mounted between the adjustment rod mounting end (20) and the fixed end (21). The mounting base adjustment rod (24) passes through the adjustment rod mounting end (20) and the auxiliary guide block (25) and is threadedly connected to the mounting base (13). The mounting base adjustment rod (24) realizes horizontal movement of the mounting base (13) by rotating.

3. The plastic film inner folding and flanging device according to claim 2, characterized in that: The bottom template (1) adjustment assembly comprises a guide mounting plate (26), a rotating handle (27), a locking block (28) and a bottom template slider (29); the bottom template (1) is fixedly mounted on the bottom template slider (29); the bottom template slider (29) is slidably mounted on the guide mounting plate (26); one end of the rotating handle (27) is fixedly connected to the guide mounting plate (26); the other end of the rotating handle (27) passes through an opening (30) of a fixed vertical plate (15) and a lifting slider (18) and is fixed to the lifting slider (18) through the locking block (28); the tilting angle of the bottom template (1) can be adjusted by rotating the rotating handle (27).

4. The plastic film inner folding and flanging device according to claim 2, characterized in that: The film pressing roller slider (12) is slidably sleeved on the guide rail shaft (19), and the film pressing roller slider (12) is penetrated by the mounting base adjustment rod (24) without contact. The mounting end (20) of the adjustment rod is also provided with a film pressing roller slider adjustment rod (32). The film pressing roller slider (12) adjustment rod passes through the mounting end (20) of the adjustment rod and is threadedly engaged with the film pressing roller slider (12). The film pressing roller slider (12) adjustment rod converts its own rotational motion into horizontal motion of the film pressing roller slider (12).

5. The plastic film inner folding and flanging device according to claim 1, characterized in that: The mounting assembly comprises an adjusting fixing plate (33), a detachable fixing rod (34), a long-handled lever seat (35), a tension spring (36), a tension spring seat (37) and a tension spring stretching screw (38); the adjusting fixing plate (33) is provided with a disassembly and assembly matching hole (39); the detachable fixing rod (34) is mounted in the disassembly and assembly matching hole (39); the end of the detachable fixing rod (34) is provided with a fixing portion (40); the long-handled lever seat (35) is inserted into the fixing portion (40); one end of the long-handled lever seat (35) is rotatably connected to the cone roller rod body (10) and the other end is used for mounting the tension spring seat (37); the tension spring stretching screw (38) is rotatably fixed on the tension spring seat (37); the tension spring (36) elastically connects the tension spring stretching screw (38) to the end of the cone roller rod body (10).

6. The plastic film inner folding and flanging device according to claim 1, characterized in that: The bottom inserting template (1) is provided with two groups, one group is used for inward folding of the folding edge of the plastic film (4), and the other group is used for inward turning of the alignment edge of the plastic film (4).

7. The plastic film inner folding and flanging device according to claim 1, characterized in that: A wheel disc mounting rod (41) is provided on the fixing block (8), and the folding wheel disc (7) is mounted on the wheel disc mounting rod (41) via a bearing sleeve.

8. The plastic film inner folding and flanging device according to claim 4, characterized in that: The film pressing roller slider (12) is provided with a roller mounting rod (42), and the film pressing roller (6) is mounted on the roller mounting rod (42) via a bearing.

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