Packaging film traction device

Abstract

The utility model discloses a packaging film traction device, and belongs to the technical field of film traction. The two sides of the upper end of the fixing frame are provided with supporting plates; the first traction roller is rotationally connected between the two sets of supporting plates, and the first traction roller is used for transmitting the thin film; the unwinding roller is rotationally connected between the two sets of supporting plates, and a driving mechanism is arranged on one side of each supporting plate and used for driving the unwinding roller and the first traction roller to rotate; the second traction roller is arranged between the first traction roller and the unwinding roller, an adjusting part is arranged at the lower end of the second traction roller, and the adjusting part is used for adjusting the height of the second traction roller. By means of the packaging film traction device, it can be guaranteed that films with different thicknesses keep appropriate tension in the traction process, the situation of loosening or excessive stretching is avoided, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of film traction, in particular to a packaging film traction device. BACKGROUND

[0002] The packaging film is a sheet-shaped material for packaging goods, usually made of polymers, and common film types are plastic film, paper film and composite film, which has the characteristics of lightness, flexibility, moisture resistance, dust prevention and the like, and is widely used in various industries.

[0003] In the packaging film, in order to ensure the stable tension control of the film, a traction device is usually arranged to traction and tension control of the film.

[0004] Through the search, for example, the patent with the publication number CN216806017U specifically discloses a green and environment-friendly packaging film special traction device, which drives the driving roller to rotate by the friction between the two driving rollers and the packaging film, so as to achieve the traction purpose of the packaging film.

[0005] The existing traction mechanism is mostly fixed structure, and the tension cannot be controlled. However, different film materials have different thicknesses, and it is difficult to ensure that the films with different thicknesses maintain appropriate tension during the traction process, which leads to the fact that the films are prone to relaxation or overstretching, affecting the product quality. Therefore, it is necessary to provide a packaging film traction device to solve the above problems.

[0006] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, it can contain information which does not constitute prior art. SUMMARY

[0007] Based on the above problems existing in the prior art, the application aims to solve the problem of providing a packaging film traction device, which can ensure that the films with different thicknesses maintain appropriate tension during the traction process, and will not appear relaxation or overstretching, thereby improving the product quality.

[0008] The technical solution adopted by the application to solve the technical problems is: a packaging film traction device, comprising:

[0009] A fixed frame, the upper ends of the fixed frame are provided with support plates on both sides;

[0010] A first traction roller, which is rotatably connected between the two groups of support plates, is used to drive the film;

[0011] an unwinding roller, the unwinding roller being rotatably connected between the two groups of support plates, a driving mechanism being provided on one side of the support plates, the driving mechanism being used to drive the unwinding roller and the first traction roller to rotate;

[0012] The second traction roller is arranged between the first traction roller and the unwinding roller. The lower end of the second traction roller is provided with an adjusting member, and the adjusting member is used to adjust the height of the second traction roller.

[0013] Furthermore, the second traction roller is internally rotatably connected to a connecting shaft, both ends of the connecting shaft protrude from the second traction roller, the adjusting member has a fixing ring fixed on the connecting shaft, a support rod is fixedly installed at the lower end of the fixing ring, and the support rod passes through the fixing frame.

[0014] Furthermore, a connecting sleeve is fixedly installed on the inner wall of the support plate, the connecting sleeve is located directly below the connecting shaft, the connecting sleeve is sleeved on the outside of the support rod, and a shrinking tube is fixedly installed on the lower end of the fixing frame, and the lower end of the support rod is slidably connected to the inside of the shrinking tube.

[0015] Furthermore, a driving member is provided on one side of the lower end of the support rod, and the driving member has a fixed plate fixedly mounted on the upper end of the fixed frame, one side of the fixed plate is rotatably connected to a rotating shaft, the rotating shaft rotates and protrudes from the support plate, a turntable is fixedly mounted on the protruding part of the rotating shaft, a handle is fixedly mounted on the outer side of the turntable, a side of the support rod close to the rotating shaft is provided with mating teeth, a gear is fixedly mounted on the rotating shaft, and the gear and the mating teeth are meshed.

[0016] Furthermore, the turntable is provided with at least two groups of matching holes in a circular shape with the rotating shaft as the center, and the support plate is provided with an installation hole with the rotating shaft as the center near one end surface of the turntable, the installation hole and the matching hole cooperate with each other, and a clamping rod is installed in the installation hole and the matching hole.

[0017] Furthermore, a slot is provided on the support plate, and a scale line is provided on the outside of the slot.

[0018] The beneficial effect of the present application is that the packaging film traction device provided by the present application completes the height adjustment of the second traction roller by providing an adjusting part and a driving part, thereby controlling the film tension, thereby ensuring that films of different thicknesses maintain appropriate tension during the traction process, without slack or excessive stretching, thereby improving product quality.

[0019] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0021] In the attached figure:

[0022] Figure 1 This is an overall schematic diagram of the packaging film pulling device in this application;

[0023] Figure 2 for Figure 1 A separate enlarged schematic diagram of the middle A area;

[0024] Figure 3 for Figure 1 A separate enlarged schematic diagram of the middle adjustment part;

[0025] Among them, the reference numerals in the figures are:

[0026] 1. Fixed frame; 11. Support plate; 12. First traction roller; 13. Second traction roller; 14. Unwinding roller; 15. Drive motor; 16. Connecting shaft; 17. Slotting;

[0027] 2. Adjusting piece; 21. Fixing ring; 22. Support rod; 23. Connecting sleeve; 24. Shrinking sleeve; 25. Matching teeth;

[0028] 3. Driving part; 31. Fixed plate; 32. Rotating shaft; 33. Turntable; 34. Gear; 35. Matching hole; 36. Mounting hole; 37. Clamping rod; 38. Handle. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0031] like Figure 1As shown, the present application provides a packaging film traction device, which is used to traction the film into the packaging machine. The traction device includes a fixed frame 1, which is installed on the packaging machine. Support plates 11 are fixedly installed on both sides of the upper end of the fixed frame 1. A first traction roller 12 is rotatably connected between the two sets of support plates 11. The first traction roller 12 is used to transmit the film;

[0032] At the same time, a unwinding roller 14 is provided on one side of the first traction roller 12, and the unwinding roller 14 is rotatably connected between the two groups of support plates 11, and a drive motor 15 is fixedly installed on one side of the support plate 11. The output shaft of the drive motor 15 is fixed on the unwinding roller 14, and the film to be packaged is installed on the unwinding roller 14. In this application, a transmission wheel and a transmission chain structure (not shown) are provided between the output shaft of the drive motor 15 and one side of the first traction roller 12. The transmission wheel and the transmission chain are conventional transmission technologies. For details, please refer to relevant materials and will not be elaborated here. Therefore, the unwinding roller 14 and the first traction roller 12 can be driven to rotate by the drive motor 15, so that the film is driven and pulled into the packaging machine.

[0033] A second traction roller 13 is provided between the first traction roller 12 and the unwinding roller 14. The height of the second traction roller 13 is lower than the first traction roller 12 and the unwinding roller 14. An adjusting member 2 is provided at the lower end of the second traction roller 13. The height of the second traction roller 13 can be adjusted by the adjusting member 2.

[0034] like Figure 1 and Figure 3 As shown, in order to facilitate the adjustment of the height of the second pulling roller 13, the second pulling roller 13 is internally rotatably connected to a connecting shaft 16, and both ends of the connecting shaft 16 protrude from the second pulling roller 13. At the same time, a slot 17 is provided on the support plate 11, and the slot 17 facilitates the movement of the second pulling roller 13 and the connecting shaft 16. The outer side of the slot 17 is provided with scale lines, and the moving distance of the second pulling roller 13 can be more conveniently observed through the scale lines.

[0035] Furthermore, the adjusting member 2 is provided at both ends of the connecting shaft 16. The adjusting member 2 has a fixing ring 21 fixed on the connecting shaft 16. A support rod 22 is fixedly mounted on the lower end of the fixing ring 21. The support rod 22 passes through the fixing frame 1 below.

[0036] In order to ensure the stability of the support rod 22, a connecting sleeve 23 is fixedly installed on the inner wall of the support plate 11. The connecting sleeve 23 is located directly below the connecting shaft 16. The connecting sleeve 23 is sleeved on the outside of the support rod 22. At the same time, a shrinking tube 24 is fixedly installed on the lower end of the fixing frame 1. The lower end of the support rod 22 is slidably connected to the inside of the shrinking tube 24. Therefore, the sliding stability of the support rod 22 can be guaranteed by the connecting sleeve 23 and the shrinking tube 24.

[0037] In order to better drive the support rod 22 to perform telescopic movement, a driving member 3 is provided on one side of the lower end of the support rod 22. The driving member 3 has a fixing plate 31 fixedly mounted on the upper end of the fixing frame 1. One side of the fixing plate 31 is rotatably connected to a rotating shaft 32. The rotating shaft 32 rotates and protrudes from the support plate 11. At the same time, a turntable 33 is fixedly mounted on the protruding portion of the rotating shaft 32. A handle 38 is fixedly mounted on the outer side of the turntable 33. The handle 38 is used to facilitate the rotation of the turntable 33 and the rotating shaft 32.

[0038] At the same time, a mating tooth 25 is provided on a side of the support rod 22 close to the rotating shaft 32, and a gear 34 is fixedly mounted on the rotating shaft 32. The gear 34 and the mating tooth 25 are engaged, so that when the gear 34 rotates with the rotating shaft 32, it drives the support rod 22 to move linearly.

[0039] like Figure 2 As shown, in order to fix the turntable 33, a plurality of groups of matching holes 35 are provided in a circular shape with the rotating shaft 32 at the center as the center of the circle, and the end surface of the support plate 11 close to the turntable 33 is also provided with a mounting hole 36 with the rotating shaft 32 as the center of the circle. The mounting holes 36 and the matching holes 35 cooperate with each other, and a clamping rod 37 is installed in one group of the mounting holes 36 and the matching holes 35. Therefore, after the clamping rod 37 is inserted into the mounting hole 36 and the matching hole 35, the turntable 33 will be fixed.

[0040] To sum up: when pulling the film, the film is first passed around the second pulling roller 13 and the first pulling roller 12 until it reaches the packaging machine. Then the operator manually pulls out the clamping rod 37 and rotates the turntable 33 to drive the rotating shaft 32 and the gear 34 to rotate. The support rod 22 is driven upward by cooperating with the mating teeth 25 until the film is completely tightened. Then the clamping rod 37 is inserted into the corresponding mating hole 35 and the mounting hole 36 to complete the height adjustment of the second pulling roller 13 and realize the control of the film tension. Therefore, it can ensure that films of different thicknesses maintain appropriate tension during the pulling process, and will not be loose or over-stretched, thereby improving product quality.

[0041] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. Packaging film pulling device, characterized by: include: A fixing frame (1), wherein support plates (11) are installed on both sides of the upper end of the fixing frame (1); a first traction roller (12), the first traction roller (12) being rotatably connected between the two groups of support plates (11), the first traction roller (12) being used for transmitting the film; an unwinding roller (14), the unwinding roller (14) being rotatably connected between the two groups of support plates (11), a driving mechanism being provided on one side of the support plates (11), the driving mechanism being used to drive the unwinding roller (14) and the first traction roller (12) to rotate; A second traction roller (13) is provided between the first traction roller (12) and the unwinding roller (14); an adjusting member (2) is provided at the lower end of the second traction roller (13); the adjusting member (2) is used to adjust the height of the second traction roller (13).

2. The packaging film pulling device according to claim 1, characterized in that: The second traction roller (13) is internally rotatably connected to a connecting shaft (16), and both ends of the connecting shaft (16) protrude from the second traction roller (13). The adjusting member (2) has a fixing ring (21) fixed on the connecting shaft (16), and a support rod (22) is fixedly installed at the lower end of the fixing ring (21), and the support rod (22) passes through the fixing frame (1).

3. The packaging film pulling device according to claim 2, characterized in that: A connecting sleeve (23) is fixedly mounted on the inner wall of the support plate (11), the connecting sleeve (23) is located directly below the connecting shaft (16), and the connecting sleeve (23) is sleeved on the outer side of the support rod (22). A shrinking tube (24) is fixedly mounted on the lower end of the fixing frame (1), and the lower end of the support rod (22) is slidably connected to the inside of the shrinking tube (24).

4. The packaging film pulling device according to claim 3, characterized in that: A driving member (3) is provided on one side of the lower end of the support rod (22), and the driving member (3) has a fixing plate (31) fixedly mounted on the upper end of the fixing frame (1), and one side of the fixing plate (31) is rotatably connected to a rotating shaft (32), and the rotating shaft (32) rotates and protrudes from the support plate (11), and a turntable (33) is fixedly mounted on the protruding portion of the rotating shaft (32), and a handle (38) is fixedly mounted on the outer side of the turntable (33), and a matching tooth (25) is provided on a side of the support rod (22) close to the rotating shaft (32), and a gear (34) is fixedly mounted on the rotating shaft (32), and the gear (34) and the matching tooth (25) are meshed.

5. The packaging film pulling device according to claim 4, characterized in that: The turntable (33) is provided with at least two groups of matching holes (35) in a circular shape with the rotating shaft (32) as the center. The support plate (11) is provided with a mounting hole (36) on one end surface close to the turntable (33) with the rotating shaft (32) as the center. The mounting hole (36) and the matching hole (35) are matched with each other. A clamping rod (37) is matched and installed in the mounting hole (36) and the matching hole (35).

6. The packaging film pulling device according to claim 1, characterized in that: The support plate (11) is provided with a slot (17), and a scale line is provided on the outside of the slot (17).

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