A film turnover device

Abstract

The utility model provides a kind of film turnover device, belong to film turnover technical field;Film turnover device includes: bottom plate, mounting plate, screw, first adjusting plate, second adjusting plate, support seat, pressure mechanism and universal roller;By first adjusting plate and second adjusting plate are moved to opposite or opposite direction with screw driving, to realize the distance between first adjusting plate and second adjusting plate is adjusted, to realize the distance between two support grooves is adapted the length of film cylinder, to realize product can be turned over to different length film cylinder, to improve the applicability of product. By two pressure mechanisms are respectively installed on first adjusting plate and second adjusting plate, and make pressure mechanism be located above support seat, to realize that pressure mechanism can be the shaft of film cylinder both ends is pressed in support groove, to improve the stability of film cylinder, to avoid film cylinder from support groove in the process of turning over film cylinder, to improve the use experience of product.

Description

Technical Field

[0001] This utility model belongs to the field of film turnover technology, and specifically relates to a film turnover device. Background Technology

[0002] In related technologies, before manufacturing the light-emitting film, the rolled film needs to be moved to a predetermined position so that a light-concentrating coating can be printed on the film surface.

[0003] The prior art (authorization announcement number: CN221438016U) discloses a polyethylene film roll handling device, the key technical points of which include a handling vehicle body and a limiting device disposed on the handling vehicle body; the handling vehicle body includes wheels located at the lower end; the handling vehicle body also includes a support plate; two opposing support rods are disposed on the edge of the support plate; several connecting rods are disposed between the support rods; the limiting device is disposed on the support rod above the support plate; baffles are disposed on three sides of the support plate; a connecting plate is disposed at the lower end of the support rod in the direction away from the baffles; the connecting plate is connected to the wheel through a wheel axle; several L-shaped hooks are disposed on the support rod in the direction away from the baffles. This application has the advantages of convenient use and good effect on fixing the film roll.

[0004] In this prior art, since the distance between the two side plates cannot be adjusted, the two side plates cannot be used to rotate film tubes of different lengths, thereby reducing the applicability of the product. Utility Model Content

[0005] To address the problem in the existing technology where the distance between the two side plates cannot be adjusted, thus limiting the capacity for handling film tubes of different lengths and reducing product applicability, this invention provides a film handling device. This device uses a lead screw to move a first adjusting plate and a second adjusting plate in opposite directions, adjusting the distance between them to match the length of the film tube. This allows the product to handle film tubes of different lengths, improving its applicability. The specific technical solution is as follows:

[0006] A film turnover device includes: a base plate, a mounting plate, a lead screw, a first adjusting plate, a second adjusting plate, a support base, a pressing mechanism, and universal rollers; two mounting plates are mounted on the base plate with a gap between them; the lead screw has a first external thread and a second external thread symmetrically arranged on its outer wall, the first external thread and the second external thread having opposite helical directions, and both ends of the lead screw are rotatably connected to the two mounting plates respectively; the first adjusting plate has a first threaded hole, and the first threaded hole has a first internal thread, the first threaded hole of the first adjusting plate being fitted onto the first external thread of the lead screw. The outer side; the second adjusting plate is provided with a second threaded hole, and the second threaded hole is provided with a second internal thread. The second threaded hole of the second adjusting plate is fitted onto the outer side of the second external thread of the lead screw; the support seat is provided with a support groove. Two support seats are respectively installed on the first adjusting plate and the second adjusting plate, and the two support seats are arranged opposite to each other; two clamping mechanisms are respectively installed on the first adjusting plate and the second adjusting plate, and the clamping mechanisms are located above the support seats; four universal rollers are installed on the bottom of the base plate; wherein, the first external thread is adapted to the first internal thread, and the second external thread is adapted to the second internal thread.

[0007] In addition, the film turnover device in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0008] In the above technical solution, the clamping mechanism includes: a support plate, a clamping plate, a pull rod, a handle, and a spring; the support plate is fixed to a first adjusting plate or a second adjusting plate; the clamping plate is located below the support plate; one end of the pull rod is connected to the clamping plate, and the other end of the pull rod passes through the support plate; the handle is connected to the pull rod, and the handle is located above the support plate; the spring is sleeved on the outside of the pull rod, one end of the spring is connected to the clamping plate, and the other end of the spring is connected to the support plate.

[0009] In the above technical solution, the clamping mechanism further includes: guide rods and limiting plates; one end of the four guide rods is connected to the clamping plate, and the other end of the four guide rods passes through the support plate; the four limiting plates are respectively connected to the other end of the four guide rods, and the four limiting plates are simultaneously in contact with the support plate.

[0010] In the above technical solution, the clamping mechanism further includes: a clamping seat and a clamping groove; the clamping seat is an elastic body, the clamping seat is installed at the bottom of the clamping plate, and the clamping seat is located above the support groove; the clamping groove is U-shaped, and multiple clamping grooves are arranged at the bottom of the clamping seat.

[0011] In the above technical solution, the clamping mechanism further includes: a snap-fit ​​plate, a third threaded hole, and snap-fit ​​bolts; the snap-fit ​​plate is connected to the end of the support plate, and the snap-fit ​​plate is perpendicular to the support plate; a third internal thread is provided in the third threaded hole, and two third threaded holes are provided in the snap-fit ​​plate; a third external thread is provided on the outer wall of the snap-fit ​​bolt, and two snap-fit ​​bolts pass through the two third threaded holes respectively; wherein, the third internal thread and the third external thread are compatible.

[0012] In the above technical solution, the film turnover device also includes: a motor and a light rod; the motor is mounted on the base plate and connected to the lead screw; the two ends of the light rod are respectively connected to two mounting plates, and the light rod passes through the first adjustment plate and the second adjustment plate in sequence.

[0013] The advantages of this film turnover device compared with the prior art are as follows:

[0014] 1. By moving the first and second adjusting plates in opposite or opposing directions using a lead screw, the distance between them can be adjusted. This allows the distance between the two support slots to be adapted to the length of the film tube, enabling the product to accommodate film tubes of different lengths and improving its applicability. By mounting two clamping mechanisms on the first and second adjusting plates respectively, and positioning them above the support base, the clamping mechanisms can press the rotating shafts at both ends of the film tube into the support slots, improving the stability of the film tube. This prevents the film tube from slipping out of the support slots during handling, thus enhancing the user experience.

[0015] 2. When preparing to place the diaphragm tube's rotating shaft into the support groove, the operator pulls the lever upwards using the handle, causing the lever to move the pressure plate upwards, increasing the distance between the pressure plate and the support groove; at this time, the spring is compressed; then, the diaphragm tube's rotating shaft is placed into the support groove; then, the handle is released, allowing the spring to return to its original position and move the pressure plate downwards, thereby using the spring's elastic force to press the pressure plate against the rotating shaft, thus improving the stability of the diaphragm tube.

[0016] 3. By connecting the four limiting plates to the other ends of the four guide rods respectively, and making the four limiting plates simultaneously fit against the support plate, the limiting plates and guide rods can move synchronously. This allows the support plate to support the guide rods through the four limiting plates, preventing the guide rods from moving out of the support plate. At the same time, it also allows the clamping plate to be hoisted through the guide rods and limiting plates.

[0017] 4. By installing the clamping seat at the bottom of the clamping plate and positioning it above the support groove, the clamping plate can press the rotating shaft into the support groove through the clamping seat, thereby avoiding rigid contact between the clamping plate and the rotating shaft, thus preventing damage to the clamping plate and improving the user experience of the product.

[0018] 5. After the operator moves the lever upward using the handle, they tighten the locking bolts to embed them under the pressure plate, thus supporting the pressure plate. At this point, the operator can release the handle to avoid continuous pulling, improving the user experience. When preparing to press the pressure plate against the shaft, tighten the locking bolts in the opposite direction to remove them from under the pressure plate, ensuring that the pressure plate (pressure seat) can press the shaft firmly.

[0019] 6. By connecting the two ends of the optical bar to two mounting plates respectively, and passing the optical bar through the first adjustment plate and the second adjustment plate in sequence, the two mounting plates cooperate to support the optical bar, thereby enabling the first adjustment plate and the second adjustment plate to move along the optical bar, thus improving the stability of the movement of the first adjustment plate and the second adjustment plate. Attached Figure Description

[0020] Figure 1 This is one of the front views of a film turnover device according to the present invention;

[0021] Figure 2 for Figure 1 A magnified view of part A;

[0022] Figure 3 for Figure 1 BB section view;

[0023] Figure 4 This is a second front view of a film turnover device according to the present invention;

[0024] Figure 5 This is a perspective view of the film tube and rotating shaft of this utility model;

[0025] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0026] 10 Base plate, 11 Mounting plate, 12 Lead screw, 13 First adjusting plate, 14 Second adjusting plate, 15 Support base, 16 Support groove, 17 Pressing mechanism, 171 Support plate, 172 Pressing plate, 173 Pull rod, 174 Handle, 175 Spring, 176 Guide rod, 177 Limiting plate, 178 Pressing base, 179 Pressing groove, 180 Snap-fit ​​plate, 181 Snap-fit ​​bolt, 19 Universal roller, 20 Motor, 21 Membrane cylinder, 22 Rotary shaft. Detailed Implementation

[0027] The following are specific implementation cases and appendices. Figures 1 to 4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0028] A film turnover device, such as Figures 1 to 4 As shown, the film turnover device includes: a base plate 10, a mounting plate 11, a lead screw 12, a first adjusting plate 13, a second adjusting plate 14, a support base 15, a pressing mechanism 17, and universal rollers 19; two mounting plates 11 are mounted on the base plate 10, and there is a gap between the two mounting plates 11; the outer wall of the lead screw 12 is symmetrically provided with a first external thread and a second external thread, the helical directions of the first external thread and the second external thread are opposite, and the two ends of the lead screw 12 are respectively rotatably connected to the two mounting plates 11; the first adjusting plate 13 is provided with a first threaded hole, and the first threaded hole is provided with a first internal thread, and the first threaded hole of the first adjusting plate 13 is fitted onto the outer side of the first external thread of the lead screw 12. The second adjusting plate 14 has a second threaded hole with a second internal thread, which is fitted onto the outside of the second external thread of the lead screw 12. A support groove 16 is provided in the support seat 15. Two support seats 15 are respectively installed on the first adjusting plate 13 and the second adjusting plate 14, and are arranged opposite to each other. Two clamping mechanisms 17 are respectively installed on the first adjusting plate 13 and the second adjusting plate 14, and are located above the support seats 15. Four universal rollers 19 are installed at the bottom of the base plate 10. The first external thread is adapted to the first internal thread, and the second external thread is adapted to the second internal thread.

[0029] By mounting two mounting plates 11 on the base plate 10 and rotatably connecting both ends of the lead screw 12 to the two mounting plates 11 respectively, the two mounting plates 11 cooperate to support the lead screw 12, thereby enabling the lead screw 12 to rotate between the two mounting plates 11. By fitting the first threaded hole of the first adjusting plate 13 onto the outside of the first external thread of the lead screw 12 and fitting the second threaded hole of the second adjusting plate 14 onto the outside of the second external thread of the lead screw 12, with the first external thread and the second external thread having opposite helical directions, the lead screw 12 is simultaneously threadedly connected to the first adjusting plate 13 and the second adjusting plate 14. Thus, when the lead screw 12 is rotated, it causes the first adjusting plate 13 and the second adjusting plate 14 to move in opposite or opposite directions, thereby adjusting the distance between the first adjusting plate 13 and the second adjusting plate 14. By installing two support seats 15 on the first adjusting plate 13 and the second adjusting plate 14 respectively, and setting the support grooves 16 inside the support seats 15, the first adjusting plate 13 and the second adjusting plate 14 can support the two support seats 15 respectively, so that the rotating shafts 22 at both ends of the film cylinder 21 can be placed in the two support grooves 16 respectively, thereby achieving the cooperation of the two support seats 15 to support the film cylinder 21. By installing two pressing mechanisms 17 on the first adjusting plate 13 and the second adjusting plate 14 respectively, and placing the pressing mechanisms 17 above the support seats 15, the first adjusting plate 13 and the second adjusting plate 14 can support the two pressing mechanisms 17 respectively, so that the pressing mechanisms 17 can press the rotating shafts 22 placed in the support grooves 16, thereby improving the stability of the film cylinder 21; by installing four universal rollers 19 on the bottom of the base plate 10, the base plate 10 can move on the ground via the four universal rollers 19, thereby improving the mobility of the product.

[0030] When using the product, first rotate the lead screw 12, causing the lead screw 12 to drive the first adjusting plate 13 and the second adjusting plate 14 to move in opposite or opposite directions, thereby adjusting the distance between the first adjusting plate 13 and the second adjusting plate 14, so that the distance between the two support grooves 16 is adapted to the length of the film tube 21, ensuring that the rotating shafts 22 at both ends of the film tube 21 can be placed in the support grooves 16; then, the pressing mechanism 17 presses the rotating shafts 22 at both ends of the film tube 21, thereby improving the stability of the film tube 21; then, the product is moved on the ground by the four universal rollers 19, thereby moving the product to the predetermined position, thus completing the turnover of the film.

[0031] By employing the above structure, the lead screw 12 drives the first adjusting plate 13 and the second adjusting plate 14 to move in opposite or opposite directions, thereby adjusting the distance between the first adjusting plate 13 and the second adjusting plate 14. This allows the distance between the two support grooves 16 to be adapted to the length of the film tube 21, enabling the product to handle film tubes 21 of different lengths and improving its applicability. By installing two pressing mechanisms 17 on the first adjusting plate 13 and the second adjusting plate 14 respectively, and positioning the pressing mechanisms 17 above the support base 15, the pressing mechanisms 17 can press the rotating shafts 22 at both ends of the film tube 21 into the support grooves 16, thereby improving the stability of the film tube 21. This prevents the film tube 21 from moving out of the support grooves 16 during handling, thus improving the user experience.

[0032] In embodiments of this utility model, such as Figures 1 to 4 As shown, the clamping mechanism 17 includes: a support plate 171, a clamping plate 172, a pull rod 173, a handle 174, and a spring 175; the support plate 171 is fixed on the first adjusting plate 13 or the second adjusting plate 14; the clamping plate 172 is located below the support plate 171; one end of the pull rod 173 is connected to the clamping plate 172, and the other end of the pull rod 173 passes through the support plate 171; the handle 174 is connected to the pull rod 173, and the handle 174 is located above the support plate 171; the spring 175 is fitted on the outside of the pull rod 173, one end of the spring 175 is connected to the clamping plate 172, and the other end of the spring 175 is connected to the support plate 171.

[0033] By fixing the support plate 171 to the first adjusting plate 13 or the second adjusting plate 14, the first adjusting plate 13 or the second adjusting plate 14 can support the support plate 171, thereby improving the stability of the support plate 171. By connecting one end of the pull rod 173 to the pressure plate 172 and letting the other end of the pull rod 173 pass through the support plate 171, the pull rod 173 and the support plate 171 can move synchronously. By connecting the handle 174 to the pull rod 173 and placing the handle 174 above the support plate 171, the operator can use the handle 174 to move the pull rod 173 upward, thereby reducing the difficulty of pulling the pull rod 173 and improving the user experience. By fitting a spring 175 on the outside of the pull rod 173, connecting one end of the spring 175 to the pressure plate 172, and connecting the other end of the spring 175 to the support plate 171, the support plate 171 can support the pressure plate 172 through the spring 175.

[0034] With the above structure, when preparing to place the rotating shaft 22 of the film cylinder 21 into the support groove 16, the operator pulls the lever 173 upward through the handle 174, thereby causing the lever 173 to move the pressure plate 172 upward, increasing the distance between the pressure plate 172 and the support groove 16; at this time, the spring 175 is in a compressed state; then, the rotating shaft 22 of the film cylinder 21 is placed into the support groove 16; then, the handle 174 is released, causing the spring 175 to reset and move the pressure plate 172 downward, thereby using the elastic force of the spring 175 to press the pressure plate 172 against the rotating shaft 22, thereby improving the stability of the film cylinder 21.

[0035] In embodiments of this utility model, such as Figures 1 to 4 As shown, the clamping mechanism 17 also includes: guide rods 176 and limiting plates 177; one end of the four guide rods 176 is connected to the clamping plate 172, and the other end of the four guide rods 176 passes through the support plate 171; the four limiting plates 177 are respectively connected to the other end of the four guide rods 176, and the four limiting plates 177 are simultaneously in contact with the support plate 171.

[0036] By connecting one end of the four guide rods 176 to the pressure plate 172 and allowing the other end of the four guide rods 176 to pass through the support plate 171, the four guide rods 176 and the pressure plate 172 can move up and down synchronously, thereby preventing the pressure plate 172 from shifting during up and down movement and improving the stability of the pressure plate 172's up and down movement. By connecting the four limiting plates 177 to the other end of the four guide rods 176 respectively and allowing the four limiting plates 177 to simultaneously fit against the support plate 171, the limiting plates 177 and the guide rods 176 can move synchronously, thereby enabling the support plate 171 to support the guide rods 176 through the four limiting plates 177, preventing the guide rods 176 from moving out of the support plate 171, and also enabling the pressure plate 172 to be hoisted through the guide rods 176 and the limiting plates 177.

[0037] In embodiments of this utility model, such as Figures 1 to 4 As shown, the clamping mechanism 17 also includes a clamping seat 178 and a clamping groove 179; the clamping seat 178 is an elastic body, the clamping seat 178 is installed at the bottom of the clamping plate 172, and the clamping seat 178 is located above the support groove 16; the clamping groove 179 is U-shaped, and multiple clamping grooves 179 are arranged at the bottom of the clamping seat 178.

[0038] By installing the clamping seat 178 at the bottom of the clamping plate 172 and positioning the clamping seat 178 above the support groove 16, the clamping plate 172 can press the rotating shaft 22 into the support groove 16 through the clamping seat 178, thereby avoiding rigid contact between the clamping plate 172 and the rotating shaft 22 and preventing damage to the clamping plate 172, thus improving the user experience of the product; by setting multiple U-shaped clamping grooves 179 at the bottom of the clamping seat 178, the friction between the clamping seat 178 and the rotating shaft 22 is increased, thereby preventing the rotating shaft 22 from rotating in the support groove 16, further improving the stability of the diaphragm cylinder 21.

[0039] In embodiments of this utility model, such as Figures 1 to 4 As shown, the clamping mechanism 17 further includes: a snap-fit ​​plate 180, a third threaded hole, and a snap-fit ​​bolt 181; the snap-fit ​​plate 180 is connected to the end of the support plate 171, and the snap-fit ​​plate 180 is perpendicular to the support plate 171; a third internal thread is provided in the third threaded hole, and two third threaded holes are provided in the snap-fit ​​plate 180; a third external thread is provided on the outer wall of the snap-fit ​​bolt 181, and two snap-fit ​​bolts 181 pass through two third threaded holes respectively; wherein, the third internal thread and the third external thread are adapted to each other.

[0040] By connecting the end of the snap-fit ​​plate 180 to the end of the support plate 171 and making the snap-fit ​​plate 180 perpendicular to the support plate 171, the support plate 171 supports the snap-fit ​​plate 180. By setting two third threaded holes in the snap-fit ​​plate 180 and passing two snap-fit ​​bolts 181 through the two third threaded holes respectively, the snap-fit ​​bolts 181 are threadedly connected to the snap-fit ​​plate 180, thereby turning the snap-fit ​​bolts 181 to adjust the extension length of the snap-fit ​​bolts 181.

[0041] With the above structure, when the operator moves the lever 173 upward using the handle 174, the operator can then tighten the locking bolt 181, causing it to embed under the pressure plate 172, thus supporting the pressure plate 172. At this point, the operator can release the handle 174 to avoid continuously pulling it, thereby improving the user experience. When preparing to press the pressure plate 172 against the rotating shaft 22, the locking bolt 181 is tightened in the opposite direction, causing it to move out from under the pressure plate 172, ensuring that the pressure plate 172 (pressure seat 178) can press the rotating shaft 22.

[0042] In embodiments of this utility model, such as Figures 1 to 4 As shown, the film turnover device also includes: a motor 20 and a light bar; the motor 20 is mounted on the base plate 10 and is connected to the lead screw 12; the two ends of the light bar are respectively connected to two mounting plates 11, and the light bar passes through the first adjustment plate 13 and the second adjustment plate 14 in sequence.

[0043] By mounting the motor 20 on the base plate 10 and connecting the motor 20 to the lead screw 12, the motor 20 can drive the lead screw 12 to rotate, thereby providing power for rotating the lead screw 12. By connecting the two ends of the optical rod to two mounting plates 11 respectively, and passing the optical rod through the first adjusting plate 13 and the second adjusting plate 14 in sequence, the two mounting plates 11 cooperate to support the optical rod, thereby enabling the first adjusting plate 13 and the second adjusting plate 14 to move along the optical rod, thereby improving the stability of the movement of the first adjusting plate 13 and the second adjusting plate 14.

[0044] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A film turnover device, characterized in that, The film turnover device includes: Base plate; Mounting plates, two of which are mounted on the base plate, with a gap between the two mounting plates; The lead screw has a first external thread and a second external thread symmetrically arranged on its outer wall. The first external thread and the second external thread have opposite helical directions, and the two ends of the lead screw are respectively rotatably connected to the two mounting plates. A first adjusting plate, wherein a first threaded hole is provided in the first adjusting plate, and a first internal thread is provided in the first threaded hole, and the first threaded hole of the first adjusting plate is fitted onto the outside of the first external thread of the lead screw; The second adjusting plate has a second threaded hole inside, and a second internal thread inside the second threaded hole. The second threaded hole of the second adjusting plate is fitted onto the outside of the second external thread of the lead screw. The support base has a support groove inside. Two support bases are respectively installed on the first adjusting plate and the second adjusting plate, and the two support bases are arranged opposite to each other. A clamping mechanism, wherein two clamping mechanisms are respectively mounted on the first adjusting plate and the second adjusting plate, and the clamping mechanisms are located above the support base; Four omnidirectional casters are mounted on the bottom of the base plate; Wherein, the first external thread is adapted to the first internal thread, and the second external thread is adapted to the second internal thread.

2. The film turnover device according to claim 1, characterized in that, The clamping mechanism includes: A support plate, which is fixed to the first adjustment plate or the second adjustment plate; A clamping plate, located below the support plate; A pull rod, one end of which is connected to the pressure plate, and the other end of which passes through the support plate; A handle, which is connected to the pull rod and is located above the support plate; A spring is fitted onto the outside of the pull rod, with one end of the spring connected to the pressure plate and the other end connected to the support plate.

3. A film turnover device according to claim 2, characterized in that, The clamping mechanism further includes: Guide rods, one end of the four guide rods is connected to the clamping plate, and the other end of the four guide rods passes through the support plate; The four limiting plates are respectively connected to the other end of the four guide rods, and the four limiting plates are simultaneously attached to the support plate.

4. A film turnover device according to claim 3, characterized in that, The clamping mechanism further includes: A clamping seat, which is an elastic body, is installed at the bottom of the clamping plate and is located above the support groove; A U-shaped clamping groove is provided at the bottom of the clamping seat.

5. A film turnover device according to claim 4, characterized in that, The clamping mechanism further includes: A snap-fit ​​plate, wherein the snap-fit ​​plate is connected to the end of the support plate and is perpendicular to the support plate; The third threaded hole is provided with a third internal thread, and two of the third threaded holes are provided in the snap-fit ​​plate. A snap-fit ​​bolt, wherein a third external thread is provided on the outer wall of the snap-fit ​​bolt, and two snap-fit ​​bolts respectively pass through two holes with the third thread; The third internal thread is adapted to the third external thread.

6. A film turnover device according to claim 1, characterized in that, The film turnover device further includes: An electric motor is mounted on the base plate and connected to the lead screw; The light bar has two ends connected to the two mounting plates respectively, and the light bar passes through the first adjustment plate and the second adjustment plate in sequence.

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