Shading film production equipment

By designing the cutting positioning mechanism and the cutting mechanism, the problem of wrinkles occurring during the cutting of the light-blocking film was solved, thereby improving the quality of the finished light-blocking film and expanding its applicable cutting range.

CN223948348UActive Publication Date: 2026-02-27SHANGHAI FARM GARDEN GREEN ENG CO LTD
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Patent Information

Application Number
CN202520613569.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2026-02-27
Estimated Expiration
2035-04-02

AI Technical Summary

Technical Problem

During the production of blackout film, wrinkles are generated on the transport mechanism during the cutting process, which leads to a decrease in the quality of the blackout film.

Method used

A cutting and positioning mechanism is adopted, including a positioning platform and a cutting mechanism. Gravity keeps the light-blocking film in close contact with the transport mechanism during cutting. After cutting, the film is in close contact with the positioning platform under the action of gravity and its own material. The cutting position is adjusted by a cylinder positioning plate and a locking screw to accommodate light-blocking films of different thicknesses.

Benefits of technology

It reduces the probability of wrinkles forming on the light-blocking film in the transportation mechanism, improves the quality of the finished light-blocking film, and expands the application range of the cutting and positioning mechanism.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223948348U_ABST
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Patent Text Reader

Abstract

The utility model relates to the technical field of shading films, and particularly discloses shading film production equipment which comprises a calender, a conveying mechanism, a cutting positioning mechanism and a cutting mechanism. The cutting positioning mechanism comprises a positioning platform, the positioning platform is arranged at the output end of the conveying mechanism, and the height of the positioning platform is lower than that of the output end of the conveying mechanism; the cutting mechanism is arranged above the positioning platform and used for moving towards the positioning platform and cutting the shading film on the positioning platform. The method has the effect of improving the quality of the finished shading film.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shading film production, and particularly relates to a shading film production device. BACKGROUND

[0002] The shading film commonly used in the greenhouse is a plastic film with shading function. By laying the shading film in the greenhouse, the light required for the growth of plants in the greenhouse can be adjusted, so as to promote the growth of plants.

[0003] The existing shading film production is to melt the raw material of the shading film by a calendering machine and form a film shape, then the formed film is transported to the position of a film cutting mechanism on the same plane by a conveying mechanism to cut the film, and finally the shading film with the required size is obtained.

[0004] In the existing shading film production process, when the shading film is cut, the shading film at the cutting position moves, while the shading film on the conveying mechanism continues to move, so that the shading film wrinkles on the conveying mechanism, or the conveying mechanism stops conveying during cutting, so that the discharge of the calendering machine is discontinuous, and finally the quality of the shading film is reduced. CONTENT OF THE INVENTION

[0005] In order to improve the quality of the finished shading film, the present application provides a shading film production device.

[0006] The shading film production device provided by the present application adopts the following technical scheme:

[0007] The shading film production device comprises a calendering machine and a conveying mechanism, and further comprises:

[0008] A cutting positioning mechanism, comprising a positioning platform, the positioning platform is arranged at the output end of the conveying mechanism, and the height of the positioning platform is lower than the height of the output end of the conveying mechanism;

[0009] A cutting mechanism is arranged above the positioning platform, and the cutting mechanism is used for moving towards the positioning platform and cutting the shading film on the positioning platform.

[0010] By adopting the above technical scheme, when the shading film is produced, the positioning platform of the cutting positioning mechanism presses the shading film falling from the end of the conveying mechanism by gravity, and then the cutting mechanism cuts the pressed shading film. When the shading film is cut, the other part of the shading film can continue to move to the space between the conveying mechanism and the cutting platform, and continue to be output from the conveying device under the action of gravity, thereby reducing the probability that the shading film wrinkles on the conveying mechanism and affects the final product of the shading film. After the cutting of the shading film is completed, the shading film before the cutting mechanism is transported tightly to the positioning platform under the action of gravity and the force between the material itself, thereby further reducing the probability of wrinkles of the shading film and improving the quality of the finished shading film.

[0011] Optionally, the cutting mechanism comprises a positioning frame, a moving piece, a positioning pressing block and a cutting knife, the positioning frame is arranged above the positioning platform, the moving piece is slidingly connected to the positioning frame, the positioning pressing block is connected to one side of the moving piece towards the positioning platform, and the cutting knife is arranged in the positioning pressing block and is arranged towards the positioning platform.

[0012] By adopting the above technical scheme, the cutting mechanism provides positioning support through the positioning frame, the moving piece drives the positioning pressing block to move towards the positioning platform through movement on the positioning frame, thereby compressing the light shielding film on the positioning platform, and then the cutting knife completes cutting of the light shielding film on the positioning platform. After the light shielding film is compressed by the positioning pressing block, the light shielding film is cut, which facilitates cutting of the light shielding film and reduces the probability of uneven cutting of the light shielding film.

[0013] Optionally, the moving piece comprises a cylinder positioning plate and a telescopic cylinder, the cylinder positioning plate is connected to the positioning frame, the fixed end of the telescopic cylinder is connected to the cylinder positioning plate, the telescopic end of the telescopic cylinder is arranged towards the direction of the positioning platform, and one end of the positioning pressing block away from the positioning platform is connected to the telescopic end of the telescopic cylinder.

[0014] By adopting the above technical scheme, during the working process of the moving piece, the telescopic cylinder is connected to the positioning frame through the cylinder positioning plate, the telescopic cylinder drives the positioning pressing block to move towards or away from the positioning platform through telescoping, thereby realizing the transition of the cutting mechanism from the cutting state to the non-cutting state.

[0015] Optionally, the positioning frame is provided with a moving sliding groove arranged towards the direction of the positioning platform, the cylinder positioning plate is slidingly connected to the groove wall of the moving sliding groove, the cylinder positioning plate is connected with a locking piece, and the locking piece is used to position the position of the cylinder positioning plate on the positioning frame.

[0016] By adopting the above technical scheme, the position of the cylinder positioning plate on the positioning frame is limited through the moving sliding groove arranged on the positioning frame, the positioning pressing block is compressed by sliding the cylinder positioning plate in the moving sliding groove of the positioning frame, thereby realizing regulation of the compression force of the positioning pressing block to adapt to cutting of light shielding films of different thicknesses.

[0017] Optionally, the positioning block comprises a first pressing block, a second pressing block and a connecting plate, one end of the first pressing block and the second pressing block are fixedly connected to one side of the connecting plate facing the positioning platform, one side of the connecting plate away from the positioning platform is fixedly connected to the telescopic end of the telescopic cylinder, the first pressing block and the second pressing block are arranged at intervals, and the cutting knife is arranged between the first pressing block and the second pressing block, and the back of the cutting knife is fixedly connected to one side of the connecting plate facing the positioning platform.

[0018] By adopting the above technical scheme, the telescopic cylinder drives the connecting plate to move, thereby controlling the contact of the first pressing block and the second pressing block with the light shielding film on the positioning platform, and the light shielding film on both sides of the cutting knife is pressed and positioned by the first pressing block and the second pressing block, thereby reducing the probability that the position of the light shielding film deviates after the cutting knife contacts the light shielding film, thereby affecting the cutting effect.

[0019] Optionally, the positioning platform is provided with a cutting groove, the cutting groove is arranged directly below the cutting knife, and a reset member is arranged in the cutting groove.

[0020] By adopting the above technical scheme, the cutting groove arranged on the positioning platform facilitates the cutting of the light shielding film on the positioning platform by the cutting knife, the reset member arranged in the cutting groove can keep the positioning platform flat when the cutting knife is not cutting and after the cutting is completed, thereby reducing the probability that the light shielding film enters the cutting groove during transportation, thereby affecting the transportation of the light shielding film.

[0021] Optionally, the reset member comprises a reset plate and a reset spring, one side of the reset plate away from the cutting knife is connected to the reset spring, and the side wall of the reset plate slidably abuts against the inner wall of the cutting groove, and the reset spring is used to drive the reset plate to reset to be parallel to the positioning platform.

[0022] By adopting the above technical scheme, the reset member drives the reset plate to reset by the reset spring, so that the upper end surface of the reset plate is kept in the same plane as the upper end surface of the positioning platform, thereby reducing the probability that the light shielding film enters the cutting groove during transportation, and when cutting, the cutting knife and the reset plate are abutted to make the reset plate concave downward, thereby reducing the influence of the reset plate on the cutting process.

[0023] Optionally, the locking member comprises a locking screw, the cylinder positioning plate is provided with a locking through hole on one side away from the positioning frame, the cylinder positioning plate is slidably connected to the moving sliding groove through a dovetail sliding block, and the locking screw passes through the locking through hole to abut against the positioning frame.

[0024] By adopting the technical scheme, the locking screw passes through the locking through hole and abuts against the surface of the positioning frame, and is connected between the dovetail sliding block and the dovetail-shaped moving sliding groove, so that the position of the cylinder positioning plate on the positioning frame is determined through friction, and the probability of sliding of the cylinder positioning plate on the positioning frame is reduced.

[0025] Optionally, the locking screw is connected with a friction block on one side of the positioning frame.

[0026] By adopting the technical scheme, the friction block connected with the locking screw increases the friction between the locking screw and the positioning frame, and further improves the locking effect of the locking screw.

[0027] Optionally, the two sides of the positioning platform are provided with blocking plates arranged along the conveying direction of the shading film.

[0028] By adopting the technical scheme, the blocking plates limit the conveying direction of the shading film, and the probability of deviation of the shading film from the conveying direction is reduced.

[0029] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0030] 1. In the production process of the shading film, the cutting positioning mechanism positions the shading film on the positioning platform after being formed by the calender and conveyed by the conveying mechanism, then the cutting mechanism moves towards the positioning platform and cuts the shading film on the positioning platform, when the shading film is cut, the part of the shading film on the conveying mechanism can continue to be conveyed out of the conveying mechanism and kept close to the conveying mechanism under the action of gravity, so that the probability of wrinkles of the shading film on the conveying mechanism affecting the final product of the shading film is reduced, and after the cutting is completed, the shading film before the cutting mechanism is transported close to the positioning platform under the action force between gravity and the material itself, so that the quality of the finished product of the shading film is improved.

[0031] 2. The cutting groove provided on the positioning platform provides a cutting space for the cutting of the cutting knife, which facilitates the cutting of the cutting knife on the shading film on the positioning platform, and the reset member in the cutting groove resets the reset plate through the reset spring after the cutting is completed, so that the reset plate and the end face of the cutting platform are in the same plane, and the probability of the shading film on the positioning platform entering the cutting groove and affecting the transportation of the shading film is reduced.

[0032] 3. The cylinder positioning plate is connected with the moving sliding groove provided on the positioning frame through the dovetail sliding block, and cooperates with the locking screw, so that the position of the positioning cylinder on the positioning frame is adjusted, and the moving member can be adapted to the cutting of shading films with different thicknesses, and the application range of the cutting positioning mechanism is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Figure 2 is a schematic diagram of the structure of the cutting positioning mechanism and the cutting mechanism in an embodiment of the present application.

[0035] Figure 3 is a schematic diagram of the structure of the reset member in an embodiment of the present application.

[0036] Figure 4 is a schematic diagram of the structure of the locking member in an embodiment of the present application.

[0037] In the figure: 1, calender; 2, conveying mechanism; 3, cutting positioning mechanism; 31, positioning platform; 311, cutting groove; 32, reset member; 321, reset plate; 322, reset spring; 33, blocking plate; 4, cutting mechanism; 41, positioning frame; 411, moving chute; 42, moving member; 421, cylinder positioning plate; 4211, locking through hole; 422, telescopic cylinder; 423, locking member; 4231, locking screw; 4232, friction block; 43, positioning pressing block; 431, first pressing block; 432, second pressing block; 433, connecting cross plate; 44, cutting knife. DETAILED DESCRIPTION

[0038] The following will be described in detail with reference to the accompanying drawings Figures 1-4 The present application will be described in further detail.

[0039] An embodiment of the present application discloses a light shielding film production equipment. Referring to Figure 1 and Figure 2 A light shielding film production equipment includes a calender 1, a conveying mechanism 2, a cutting positioning mechanism 3, and a cutting mechanism 4.

[0040] The conveying mechanism 2 is arranged at the discharge port of the calender 1, the cutting positioning mechanism 3 is arranged at the output end of the conveying mechanism 2, the cutting positioning mechanism 3 includes a positioning platform 31, the positioning platform 31 is arranged close to the output end of the conveying mechanism 2 and is arranged below the output end of the conveying mechanism 2, and the cutting mechanism 4 is arranged directly above the cutting positioning mechanism 3.

[0041] In the production of the light shielding film, the calendering machine 1 calendering forms the light shielding film, the conveying mechanism 2 conveys the light shielding film calendered by the calendering machine 1 to the cutting positioning mechanism 3, the light shielding film falls to the cutting positioning mechanism 3 under the action of gravity and the conveying mechanism 2, and the cutting mechanism 4 above the cutting positioning mechanism 3 cuts the light shielding film, finally the light shielding film of the required size is made. When the cutting mechanism 4 cuts the light shielding film, the light shielding film before the cutting mechanism 4 can continue to output to the space between the conveying mechanism 2 and the cutting mechanism 4, which reduces the probability of the light shielding film being wrinkled on the conveying mechanism 2, and the cutting mechanism 4 cuts the light shielding film on the positioning platform 31 by moving towards the cutting positioning mechanism 3, and the light shielding film before the cutting mechanism 4 is transported closely to the positioning platform 31 under the action force between gravity and the material itself after the cutting is completed, which reduces the probability of the light shielding film being wrinkled on the positioning platform 31, and finally improves the quality of the light shielding film product.

[0042] With reference to Figure 2 and Figure 3 , the two sides of the positioning platform 31 are fixedly connected with the blocking plates 33 along the conveying direction of the light shielding film, the middle part of the positioning platform 31 is provided with the cutting groove 311, the cutting groove 311 is arranged below the cutting mechanism 4, and the cutting groove 311 is provided with the reset member 32, and the upper end face of the reset member 32 is at the same horizontal plane as the upper end face of the positioning platform 31.

[0043] The blocking plates 33 on the two sides of the positioning platform 31 limit the movement direction of the light shielding film, the cutting groove 311 provided on the positioning platform 31 facilitates the cutting mechanism 4 to cut the light shielding film on the positioning platform 31, and the reset member 32 moves downward to form a cutting space when the cutting mechanism 4 cuts the light shielding film, and the reset member 32 resets after the cutting mechanism 4 completes the cutting, thereby reducing the probability of the light shielding film entering the cutting groove 311 and affecting the transportation of the light shielding film.

[0044] With reference to Figure 2 and Figure 3 , the reset member 32 comprises a reset plate 321 and a reset spring 322, one end of the reset spring 322 is fixedly connected with the groove bottom of the cutting groove 311, the other end of the reset spring 322 is fixedly connected with the bottom end of the reset plate 321, and the number of the reset spring 322 is preferably 2 or 3. The side wall of the reset plate 321 slidably abuts against the inner wall of the cutting groove 311, and the top end of the reset plate 321 is at the same horizontal plane as the positioning platform 31 in the normal state.

[0045] The reset member 32 moves the reset plate 321 driven by the reset spring 322 to reset after the cutting is completed, and in the cutting process, the reset plate 321 moves into the cutting groove 311 by receiving the pressure from the cutting knife 44, thereby facilitating the cutting of the light shielding film by the cutting knife 44.

[0046] With reference toFigure 2 The cutting mechanism 4 comprises a positioning frame 41, a moving piece 42, a positioning pressing block 43 and a cutting knife 44, the bottom end of the positioning frame 41 is fixedly connected to the two sides of the positioning platform 31, the positioning frame 41 is located directly above the positioning platform 31, the moving piece 42 is slidingly connected to the side of the positioning frame 41 and is arranged towards the positioning platform 31, the positioning pressing block 43 is fixedly connected to the end of the moving piece 42 towards the positioning platform 31, and the back of the cutting knife 44 is connected to the positioning pressing block 43, and the cutting edge of the cutting knife 44 is arranged towards the positioning platform 31.

[0047] The cutting mechanism 4 provides positioning support through the positioning frame 41, the moving piece 42 drives the positioning pressing block 43 to move towards the positioning platform 31 to press the light shielding film on the positioning platform 31, so that the cutting knife 44 can cut the light shielding film, and the cutting knife 44 moves towards the positioning platform 31 synchronously with the positioning pressing block 43 under the action of the moving piece 42, and finally the cutting edge of the cutting knife 44 completes the cutting of the light shielding film on the positioning platform 31.

[0048] With reference to Figure 2 The moving piece 42 comprises a cylinder positioning plate 421 and a telescopic cylinder 422, the side of the cylinder positioning plate 421 towards the positioning frame 41 is provided with a dovetail sliding groove, the side of the positioning frame 41 towards the cylinder positioning plate 421 is provided with a moving sliding groove 411, the moving sliding groove 411 is arranged as a dovetail sliding groove, the cylinder positioning plate 421 is connected with a locking piece 423, the locking piece 423 is used for locking the cylinder positioning plate 421, the fixed end of the telescopic cylinder 422 is connected with the cylinder positioning plate 421, and the telescopic end of the telescopic cylinder 422 is arranged towards the positioning platform 31 and is fixedly connected with the positioning pressing block 43.

[0049] The moving piece 42 drives the positioning pressing block 43 and the cutting knife 44 to move towards the positioning platform 31 through the telescopic cylinder 422, and at the same time, the dovetail sliding block on the cylinder positioning plate 421 cooperates with the moving sliding groove 411 on the positioning frame 41, so that the position of the moving piece 42 can be adjusted, and the position of the moving piece 42 after adjustment is locked through the locking piece 423, so that the moving piece 42 drives the positioning pressing block 43 and the cutting knife 44 to cut light shielding films of different sizes and thicknesses.

[0050] With reference to Figure 2 and Figure 4 The locking piece 423 comprises a locking screw 4231, the side of the cylinder positioning plate 421 away from the positioning frame 41 is provided with a locking through hole 4211, the locking screw 4231 passes through the locking through hole 4211 and abuts against the positioning frame 41, the side of the locking screw 4231 towards the positioning frame 41 is fixedly connected with a friction block 4232, and the friction block 4232 is provided with a plurality of friction particles.

[0051] The locking piece 423 is in abutment with the positioning frame 41 through cooperation of the locking screw 4231 and the locking through hole 4211, and the friction block 4232 arranged between the locking screw 4231 and the positioning frame 41 increases the maximum static friction between the locking screw 4231 and the positioning frame 41, thereby improving the locking capacity of the locking piece 423.

[0052] With reference to Figure 2 The positioning pressing block 43 comprises a first pressing block 431, a second pressing block 432 and a connecting cross plate 433, the first pressing block 431 and the second pressing block 432 are both fixedly connected to the bottom end of the connecting cross plate 433, the top end of the connecting cross plate 433 is fixedly connected to the extension end of the extension cylinder 422, the first pressing block 431 and the second pressing block 432 are arranged at intervals, the cutting knife 44 is arranged between the first pressing block 431 and the second pressing block 432, the back of the cutting knife 44 is fixedly connected to the bottom end of the connecting cross plate 433, and the cutting edge of the cutting knife 44 is arranged in the direction of the positioning platform 31. In an embodiment, the cutting edge of the cutting knife 44 is below the bottom end of the first pressing block 431 and the second pressing block 432, and in another embodiment, the cutting edge of the cutting knife 44 is normally above the first pressing block 431 and the second pressing block 432, and when the first pressing block 431 and the second pressing block 432 press the light shielding film, the cutting knife 44 slides towards the positioning platform 31 and the cutting edge is below the bottom end of the first pressing block 431 and the second pressing block 432.

[0053] The positioning pressing block 43 presses the light shielding film on the positioning platform 31 through the first pressing block 431 and the second pressing block 432, thereby facilitating the cutting knife 44 between the first pressing block 431 and the second pressing block 432 to cut the light shielding film, the connecting cross plate 433 realizes force transmission of the extension cylinder 422 to the first pressing block 431 and the second pressing block 432, and realizes synchronous movement between the first pressing block 431 and the second pressing block 432.

[0054] The implementation principle of the light shielding film production equipment in the embodiment of the application is as follows: when the light shielding film is produced, the light shielding film is formed from the calendering machine 1 and transported to the output end of the conveying mechanism 2, and under the action of the gravity of the light shielding film and the conveying mechanism 2, the light shielding film is transported to the positioning platform 31 of the cutting and positioning mechanism 3, the cutting mechanism 4 moves towards the positioning platform 31 and cuts the light shielding film, the conveying mechanism 2 continues to transport the light shielding film while the cutting mechanism 4 cuts the light shielding film, the light shielding film is transported to the space between the conveying mechanism 2 and the positioning platform 31 under the action of the gravity of the light shielding film, thereby reducing the probability of wrinkles of the light shielding film on the conveying mechanism 2, after cutting is completed, the light shielding film slides on the positioning platform 31 under the action of the gravity and the conveying mechanism 2, thereby being transported, thereby reducing the probability of wrinkles of the light shielding film on the positioning platform 31, and finally improving the quality of the finished light shielding film.

[0055] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A light-shielding film production equipment, comprising a calender (1) and a conveying mechanism (2), characterized in that, Also includes: The cutting and positioning mechanism (3) includes a positioning platform (31), which is located at the output end of the transport mechanism (2), and the height of the positioning platform (31) is lower than the height of the output end of the transport mechanism (2). A cutting mechanism (4) is disposed above the positioning platform (31). The cutting mechanism (4) is used to move toward the positioning platform (31) and cut the light-blocking film on the positioning platform (31).

2. The light-shielding film production equipment according to claim 1, characterized in that: The cutting mechanism (4) includes a positioning frame (41), a moving part (42), a positioning block (43), and a cutting scissors (44). The positioning frame (41) is located above the positioning platform (31). The moving part (42) is slidably connected to the positioning frame (41). The positioning block (43) is connected to the moving part (42) on the side facing the positioning platform (31). The cutting scissors (44) are located inside the positioning block (43) and are positioned facing the positioning platform (31).

3. The light-shielding film production equipment according to claim 2, characterized in that: The moving part (42) includes a cylinder positioning plate (421) and a telescopic cylinder (422). The cylinder positioning plate (421) is connected to the positioning frame (41). The fixed end of the telescopic cylinder (422) is connected to the cylinder positioning plate (421). The telescopic end of the telescopic cylinder (422) is arranged in the direction of the positioning platform (31). The end of the positioning block (43) away from the positioning platform (31) is connected to the telescopic end of the telescopic cylinder (422).

4. The light-shielding film production equipment according to claim 3, characterized in that: The positioning frame (41) has a movable slide groove (411) arranged in the direction of the positioning platform (31). The cylinder positioning plate (421) is slidably connected to the groove wall of the movable slide groove (411). The cylinder positioning plate (421) is connected to a locking member (423), which is used to position the cylinder positioning plate (421) on the positioning frame (41).

5. The light-shielding film production equipment according to claim 3, characterized in that: The positioning block (43) includes a first block (431), a second block (432), and a connecting horizontal plate (433). The first block (431) and the second block (432) are both fixedly connected at one end to the side of the connecting horizontal plate (433) facing the positioning platform (31). The side of the connecting horizontal plate (433) away from the positioning platform (31) is fixedly connected to the telescopic end of the telescopic cylinder (422). The first block (431) and the second block (432) are arranged at intervals. The cutting shears (44) are arranged between the first block (431) and the second block (432). The back of the cutting shears (44) is fixedly connected to the side of the connecting horizontal plate (433) facing the positioning platform (31).

6. The light-shielding film production equipment according to claim 2, characterized in that: The positioning platform (31) has a cutting groove (311) located directly below the cutting scissors (44), and a reset member (32) is arranged inside the cutting groove (311).

7. The light-shielding film production equipment according to claim 6, characterized in that: The reset component (32) includes a reset plate (321) and a reset spring (322). The reset plate (321) is connected to the reset spring (322) on the side away from the cutter (44). The side wall of the reset plate (321) slides against the inner wall of the cutting groove (311). The reset spring (322) is used to drive the reset plate (321) to reset to be parallel to the positioning platform (31).

8. The light-shielding film production equipment according to claim 4, characterized in that: The locking component (423) includes a locking screw (4231). The cylinder positioning plate (421) has a locking through hole (4211) on the side opposite to the positioning frame (41). The cylinder positioning plate (421) is slidably connected to the moving slide groove (411) through a dovetail slider. The locking screw (4231) passes through the locking through hole (4211) and abuts against the positioning frame (41).

9. The light-shielding film production equipment according to claim 8, characterized in that: The locking screw (4231) is connected to a friction block (4232) on the side facing the positioning frame (41).

10. The light-shielding film production equipment according to claim 1, characterized in that: The positioning platform (31) is provided with barrier plates (33) arranged along the transport direction of the light-shielding film on both sides.