Multi-directional stretching device for processing OPP (Oriented Polypropylene) protective film

Abstract

The utility model relates to the technical field of protective film processing, in particular to a multidirectional stretching device for OPP protective film processing, which comprises a machine body, the front end of the machine body is fixedly connected with two fixing rods, the inner sides of the two fixing rods are rotatably connected with outer gears and connecting gears through bearing seats, and the connecting gears are distributed in a circumferential array mode. The fixing rod and the extrusion assemblies capable of increasing the peripheral radius of the fixing rod are arranged, so that the OPP protective film only needs to be arranged on the fixing rod in a sleeving mode, then all the extrusion assemblies are used for extruding the OPP protective film outwards, and the effect of stretching the length of the OPP protective film can be achieved; due to the fact that the contact area between the device and the OPP protective film is large, stress points are evenly dispersed in all areas of the OPP protective film, the problems that stretching stress of the OPP protective film is not uniform, and the OPP protective film is broken due to stretching can be solved, and the processing efficiency of the OPP protective film can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of protective film processing, in particular to a multi-directional stretching device for processing OPP protective film Background Art

[0002] OPP protective film is based on OPP and is mainly used for surface protection during product transportation; die-cutting protection, transfer and protection of various metals, films, and tapes; protection of various plastic parts such as plastic housings and keyboards;

[0003] During the processing and production of OPP protective film, due to different actual needs, the product needs to be stretched to the required size. At present, OPP protective film is mostly fixed on both sides of the product and pulled in relative directions to achieve the stretching effect, but this method will cause uneven force on the product. The fixed position of the product at the edge is subject to greater force, while the force from the edge to the center of the product will gradually decrease. As a result, the outer periphery of the protective film is stretched too much, while the center position has not yet achieved the stretching effect, and the protective film may break due to stretching. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-directional stretching device for processing an OPP protective film, which has the functions of avoiding uneven stretching of the OPP protective film and avoiding stretching fracture.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-directional stretching device for processing OPP protective film, comprising a machine body, wherein two fixed rods are fixedly connected to the front end of the machine body, and the inner sides of the two fixed rods are rotatably connected to external gears and connecting gears distributed in a circumferential array through bearing seats, and each of the connecting gears is meshed with the external gear. A sliding groove is provided at the corresponding position of the fixed rod relative to each connecting gear, and a rack rod meshed with the connecting gear is slidably connected in the sliding groove, and an extrusion assembly is fixedly connected to the movable end of the rack rod, and two groups of limiting assemblies for limiting the protective film surrounding the outside of the two fixed rods are arranged on the machine body, and an adjustment assembly for adjusting the rotation of the external gear is arranged on the fixed rod.

[0006] Optionally, both groups of limiting components include a first clamping plate and a second clamping plate symmetrically arranged, the front end of the body is fixedly connected to a frame, the frame is located above the fixed rod, the two first clamping plates are slidably connected to the inner wall of the frame, and two connecting rods are fixedly connected between the two first clamping plates, the two second clamping plates are fixedly connected to the inner wall of the frame, a hydraulic rod is fixedly connected to the inner wall of the frame, and the movable end of the hydraulic rod is fixedly connected to the side of the first clamping plate facing away from the second clamping plate.

[0007] Optionally, two inner rods are fixedly connected to the upper and lower sides of the machine body relative to each of the first clamping plate and the second clamping plate, and an adjusting roller rod is rotatably sleeved on the outer side of the inner rod.

[0008] Optionally, the front end of the machine body is rotatably connected to a limiting roller rod and two winding rods via a bearing seat.

[0009] Optionally, the adjustment assembly includes a shaft rod rotatably connected to the inner side of the fixed rod, the end of the shaft rod is fixedly connected to the axis of the external gear, a transmission disk is fixedly connected to the shaft rod, and a transmission belt is transmission-connected between the two transmission disks.

[0010] Optionally, the machine body is provided with three servo motors for respectively driving the shaft rod and the two winding rods to rotate.

[0011] Optionally, the extrusion assembly includes a connecting frame, a rotating rod and two guide rods, the two guide rods are fixedly connected to the two ends of the connecting frame respectively, and a guide groove slidably connected to the guide rod is opened at the corresponding position of the fixed rod relative to the guide rod. The rotating rod is rotatably connected to one side of the connecting frame through a bearing seat, and the other side of the connecting frame is fixedly connected to the movable end of the rack rod.

[0012] The utility model has the following beneficial effects:

[0013] 1. Compared with the prior art, the multi-directional stretching device for processing OPP protective film is provided with a fixed rod and an extrusion component that can increase the outer radius of the fixed rod. Thus, the OPP protective film only needs to be put on the fixed rod, and then the OPP protective film is squeezed outward by each extrusion component to achieve the effect of stretching the length of the OPP protective film. Since the contact surface between the device and the OPP protective film is large, the force points are evenly dispersed in various areas of the OPP protective film, thereby reducing the uneven force of the OPP protective film during stretching, and the problem of the OPP protective film being broken due to stretching. The device is easy to use and simple to operate, and can effectively improve the processing efficiency of the OPP protective film.

[0014] 2. Compared with the prior art, this multi-directional stretching device for processing OPP protective film, by setting two sets of fixed rods, stretches the corresponding two sides of the OPP protective film respectively, so as to ensure that the OPP protective film will not bend as a whole after the stretching process, thereby effectively improving the quality of the OPP protective film after processing.

[0015] 3. Compared with the prior art, this multi-directional stretching device for processing OPP protective film, by setting a first clamping plate and a second clamping plate, can enable the OPP protective film to be continuously or continuously stretched, thereby reducing the labor burden and cost caused by manual intervention and improving the continuity and sustainability of the OPP protective film stretching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall multi-directional stretching device for processing OPP protective film proposed by the utility model;

[0017] Figure 2 This is a schematic structural diagram of a cross-section of a multi-directional stretching device for processing an OPP protective film proposed by the utility model;

[0018] Figure 3 This is a schematic cross-sectional structure diagram of a fixing rod of a multi-directional stretching device for processing an OPP protective film proposed by the utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the coordination of a transmission belt, a shaft and an external gear of a multi-directional stretching device for processing an OPP protective film proposed by the utility model;

[0020] Figure 5 This is a three-dimensional schematic diagram of a multi-directional stretching device frame for processing an OPP protective film proposed by the utility model;

[0021] Figure 6 This is a three-dimensional schematic diagram of the coordination of the first clamping plate and the connecting rod of a multi-directional stretching device for processing an OPP protective film proposed by the utility model;

[0022] Figure 7 The utility model is a three-dimensional schematic diagram of an extrusion assembly of a multi-directional stretching device for processing an OPP protective film.

[0023] Legend:

[0024] 1. Machine body; 2. Winding rod; 3. Frame; 4. Limit roller rod; 5. Hydraulic rod; 6. Servo motor; 7. Rack rod; 8. Extrusion assembly; 801. Connecting frame; 802. Rotating rod; 803. Guide rod; 9. Fixed rod; 10. First clamping plate; 11. Second clamping plate; 12. Adjusting roller rod; 13. External gear; 14. Connecting gear; 15. Connecting rod; 16. Transmission belt; 17. Shaft rod. DETAILED DESCRIPTION

[0025] Reference Figure 1-7The utility model provides a multi-directional stretching device for processing OPP protective film: comprising a machine body 1, two fixed rods 9 are fixedly connected to the front end of the machine body 1, the inner sides of the two fixed rods 9 are rotatably connected to external gears 13 and connecting gears 14 distributed in a circumferential array through bearing seats, each connecting gear 14 is meshed with the external gear 13, and a slide groove is provided at a corresponding position of the fixed rod 9 relative to each connecting gear 14, a rack rod 7 meshed with the connecting gear 14 is slidably connected in the slide groove, and an extrusion component 8 is fixedly connected to the movable end of the rack rod 7, two groups of limiting components for limiting the protective film surrounding the outer sides of the two fixed rods 9 are arranged on the machine body 1, and an adjustment component for adjusting the rotation of the external gear 13 is arranged on the fixed rod 9;

[0026] The OPP protective film is wrapped around the outer periphery of the fixed rod 9 in a cylindrical shape, so that the side wall of the OPP protective film contacts the rotating rod 802 on the extrusion assembly 8, and then the end of the OPP protective film is fixed by the limiting assembly. Thereafter, the outer gear 13 is rotated as required, and the outer gear 13 will simultaneously drive the various connecting gears 14 to rotate together, and the connecting gear 14 drives the rack rod 7 to slide in the slide groove, and the rack rod 7 drives the extrusion assembly 8 as a whole to extrude the OPP protective film outward, and the various extrusion assemblies 8 are pushed outward at the same time to increase the extrusion radius, so as to achieve the effect of stretching various areas of the OPP protective film, thereby expanding the outer diameter or length of the cylindrical OPP protective film.

[0027] In another embodiment of the present invention, please refer to Figure 5 and Figure 6 As shown, the two groups of limiting components include a first clamping plate 10 and a second clamping plate 11 that are symmetrically arranged. The front end of the machine body 1 is fixedly connected to a frame 3, and the frame 3 is located above the fixing rod 9. The two first clamping plates 10 are slidably connected to the inner wall of the frame 3, and two connecting rods 15 are fixedly connected between the two first clamping plates 10. The two second clamping plates 11 are fixedly connected to the inner wall of the frame 3. The inner wall of the frame 3 is fixedly connected to a hydraulic rod 5, and the movable end of the hydraulic rod 5 is fixedly connected to the side of the first clamping plate 10 that is away from the second clamping plate 11.

[0028] One end of the processed OPP protective film is wound on one of the winding rods 2, and the other end passes between the first clamping plate 10 and the second clamping plate 11 of the first group, and surrounds the first fixed rod 9 in the forward direction, and then passes between the first clamping plate 10 and the second clamping plate 11 of the first group in the reverse direction;

[0029] Then, it passes through the first clamping plate 10 and the second clamping plate 11 of the second group, and reversely passes through the second fixed rod 9, and then reversely passes through the first clamping plate 10 and the second clamping plate 11 of the second group, and then bypasses the limiting roller rod 4 and is fixed on another winding rod 2 to complete the processing and installation of the OPP protective film;

[0030] Forward surround and reverse surround are only relative terms to the first operation, not directional terms;

[0031] The hydraulic rod 5 is connected to the hydraulic pump drive, and the hydraulic rod 5 is used to drive one of the first clamping plates 10 to slide in the installation port, so that the first clamping plate 10 and the corresponding second clamping plate 11 can be used to clamp the OPP protective film between each other, thereby achieving the effect of fixing the OPP protective film. At the same time, the first clamping plate 10 will also use the connecting rod 15 to drive the other first clamping plate 10 to move together. The connecting rod 15 passes through the wire groove opened on the inner wall of the frame 3, and thereby the two first clamping plates 10 are fixedly connected to each other, so that the connecting rod 15 and the second clamping plate 11 do not interfere with each other.

[0032] In another embodiment of the present invention, please refer to Figure 1 As shown, the machine body 1 is fixedly connected to two inner rods on both upper and lower sides relative to each first clamping plate 10 and the second clamping plate 11, and an adjusting roller rod 12 is rotatably sleeved on the outer side of the inner rod;

[0033] The adjusting roller rod 12 is used to reduce the friction of the OPP protective film and adjust the installation orientation of the OPP protective film.

[0034] In another embodiment of the present invention, please refer to Figure 2 As shown, the front end of the machine body 1 is rotatably connected to the limit roller rod 4 and the two winding rods 2 through the bearing seat;

[0035] The limiting roller rod 4 is used to adjust the installation position of the OPP protective film to avoid interference between the OPP protective film and other structures.

[0036] In another embodiment of the present invention, please refer to Figure 4 As shown, the adjustment assembly includes a shaft 17 rotatably connected to the inner side of the fixed rod 9, the end of the shaft 17 is fixedly connected to the axis of the outer gear 13, a transmission disc is fixedly connected to the shaft 17, and a transmission belt 16 is transmission-connected between the two transmission discs;

[0037] The corresponding servo motor 6 drives one of the shafts 17 to rotate, and the shaft 17 drives the corresponding outer gear 13 to rotate. At the same time, the shaft 17 also drives the other shaft 17 to rotate together through the transmission belt 16, so that the two outer gears 13 can keep rotating at the same time and keep the same rotation angle.

[0038] In another embodiment of the present invention, please refer to Figure 1 and Figure 4 As shown, the machine body 1 is provided with three servo motors 6 which respectively drive the shaft 17 and the two winding rods 2 to rotate;

[0039] The servo motor 6 is electrically connected to a power source and can control the rotation speed of the shaft 17 or the winding rod 2 .

[0040] In another embodiment of the present invention, please refer to Figure 7 As shown, the extrusion assembly 8 includes a connecting frame 801, a rotating rod 802 and two guide rods 803, the two guide rods 803 are fixedly connected to the two ends of the connecting frame 801 respectively, and a guide groove slidably connected to the guide rod 803 is opened at a corresponding position of the fixed rod 9 relative to the guide rod 803, the rotating rod 802 is rotatably connected to one side of the connecting frame 801 through a bearing seat, and the other side of the connecting frame 801 is fixedly connected to the movable end of the rack rod 7;

[0041] The rotating rod 802 is used to reduce the friction between the OPP protective film and the extrusion assembly 8, and the guide rod 803 is used to stabilize the connecting frame 801 to prevent the connecting frame 801 from tilting, and also reduce the pressure of the rack rod 7. Finally, it should be noted that the above is only a preferred embodiment of the utility model, and is not used to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-directional stretching device for processing an OPP protective film, comprising a body (1), characterized in that: The front end of the machine body (1) is fixedly connected to two fixed rods (9), the inner sides of the two fixed rods (9) are rotatably connected to external gears (13) and connecting gears (14) distributed in a circumferential array through bearing seats, each connecting gear (14) is meshed with the external gear (13), a slide groove is provided at a corresponding position of the fixed rod (9) relative to each connecting gear (14), a rack rod (7) meshed with the connecting gear (14) is slidably connected in the slide groove, and an extrusion assembly (8) is fixedly connected to the movable end of the rack rod (7), the machine body (1) is provided with two groups of limiting assemblies for limiting the protective film surrounding the outer sides of the two fixed rods (9), and the fixed rod (9) is provided with an adjustment assembly for adjusting the rotation of the external gear (13).

2. The multi-directional stretching device for processing an OPP protective film according to claim 1, characterized in that: Both groups of limiting components include a first clamping plate (10) and a second clamping plate (11) which are symmetrically arranged. The front end of the machine body (1) is fixedly connected to a frame (3), and the frame (3) is located above a fixed rod (9). The two first clamping plates (10) are slidably connected to the inner wall of the frame (3), and two connecting rods (15) are fixedly connected between the two first clamping plates (10). The two second clamping plates (11) are fixedly connected to the inner wall of the frame (3). A hydraulic rod (5) is fixedly connected to the inner wall of the frame (3), and the movable end of the hydraulic rod (5) is fixedly connected to the side of the first clamping plate (10) facing away from the second clamping plate (11).

3. The multi-directional stretching device for processing an OPP protective film according to claim 2, characterized in that: The machine body (1) is fixedly connected to two inner rods on both upper and lower sides relative to each first clamping plate (10) and second clamping plate (11), and an adjusting roller rod (12) is rotatably sleeved on the outer side of the inner rod.

4. The multi-directional stretching device for processing an OPP protective film according to claim 1, characterized in that: The front end of the machine body (1) is rotatably connected to a limit roller rod (4) and two winding rods (2) via a bearing seat.

5. The multi-directional stretching device for processing an OPP protective film according to claim 1, characterized in that: The adjustment assembly comprises a shaft rod (17) rotatably connected to the inner side of a fixed rod (9), the end of the shaft rod (17) being fixedly connected to the axis of an external gear (13), a transmission disc being fixedly connected to the shaft rod (17), and a transmission belt (16) being transmission-connected between the two transmission discs.

6. The multi-directional stretching device for processing an OPP protective film according to claim 1, characterized in that: The machine body (1) is provided with three servo motors (6) for respectively driving the shaft rod (17) and the two winding rods (2) to rotate.

7. The multi-directional stretching device for processing an OPP protective film according to claim 1, characterized in that: The extrusion assembly (8) comprises a connecting frame (801), a rotating rod (802) and two guide rods (803); the two guide rods (803) are respectively fixedly connected to the two ends of the connecting frame (801); a guide groove slidably connected to the guide rod (803) is provided at a corresponding position of the fixed rod (9) relative to the guide rod (803); the rotating rod (802) is rotatably connected to one side of the connecting frame (801) via a bearing seat; and the other side of the connecting frame (801) is fixedly connected to the movable end of the rack rod (7).

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