A film edge detection device

Abstract

The utility model relates to a film edge detection device is provided on the frame of film transfer machine, is provided with the conveyer belt of conveying finished paper on the frame, including the first support, second support that interval setting along the conveying direction of conveyer belt, the alarm that sets up on the first support, set up on the second support two horizontal shift mechanism, respectively set up on two the horizontal shift mechanism direction of two detection components towards the conveyer belt and set up on the controller of the second support, the first support with the second support cross on the top of conveyer belt along the width direction of conveyer belt, two detection components are adjusted position along the width direction of conveyer belt through corresponding horizontal shift mechanism to adapt different wide width transfer film respectively, the controller with two detection components, alarm and two horizontal shift mechanism are all electricity connection. The device solves the problem that the existing device is poor in adaptability, and different wide width film can be flexibly adapted.

Description

Technical Field

[0001] This utility model relates to the field of membrane edge detection technology, and specifically to a membrane edge detection device. Background Technology

[0002] In the lamination and transfer process of the printing industry, the working principle is to transfer the coating on the transfer film to the paper surface after applying adhesive to the entire film using an adhesive roller. Then, the paper is separated from the film substrate through drying and peeling, achieving the purpose of lamination and transfer production. However, in actual production, due to factors such as tension fluctuations in the transfer film or paper, or human operation, inconsistent or shifting edges of the transfer film are easily caused. Shifting edges of the transfer film can lead to a large number of waste products in subsequent production processes. Because the shifting of the film edges is irregular, it is inevitable that manual inspection will miss some. Currently, most film edge detection devices on the market use fixed color sensors for identification. However, such devices have obvious limitations in practical applications: First, the installation position of the sensor is usually fixed, making it difficult for the equipment to adapt to different width types of films, resulting in poor flexibility. When switching production specifications, cumbersome overall debugging or even replacement of parts is required, which seriously affects production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a membrane edge detection device to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides a film edge detection device, which is installed on the frame of a laminating transfer machine. The frame is equipped with a conveyor belt for conveying finished paper. The device includes a first support, a second support, an alarm mounted on the first support, two transverse movement mechanisms mounted on the second support, two detection components mounted on the two transverse movement mechanisms facing the direction of the conveyor belt, and a controller mounted on the second support. The first support and the second support span across the conveyor belt along its width direction. The two detection components can be adjusted in position along the width direction of the conveyor belt via corresponding transverse movement mechanisms to adapt to transfer films of different widths. The controller is electrically connected to the two detection components, the alarm, and the two transverse movement mechanisms.

[0005] Furthermore, an electric push rod is fixedly installed on the top of the second bracket, and the output end of the electric push rod passes vertically downward through the second bracket and is fixedly connected to a horizontal plate extending along the width direction of the conveyor belt; two transverse movement mechanisms are spaced apart at the bottom end of the horizontal plate along the length direction of the horizontal plate, and the electric push rod drives the horizontal plate to lift and lower to adjust the longitudinal height of the two transverse movement mechanisms and the two detection components.

[0006] Furthermore, at least two parallel guide rods are provided between the horizontal plate and the second support. The bottom end of the guide rod is fixed to the horizontal plate, and the top end slides through the second support to limit the rotation and offset of the horizontal plate.

[0007] Furthermore, a limiting block is provided at the top of the guide rod to prevent the guide rod from disengaging from the second bracket.

[0008] Furthermore, the lateral movement mechanism includes a motor, a driving wheel, a driven wheel, a transmission belt, a slide bar, a drive plate, and a drive rod; the motor is fixed to the top surface of the horizontal plate, and a through hole adapted to the coaxiality of the motor output shaft is provided on the horizontal plate. The motor output shaft passes vertically downward through the through hole and extends to the bottom of the horizontal plate. The driving wheel is fixedly sleeved on the shaft segment of the output shaft located below the horizontal plate. The driven wheel is rotatably connected to the bottom end of the horizontal plate via a wheel axle, and the driving wheel and the driven wheel are spaced apart along the length direction of the horizontal plate. The transmission belt is engaged and sleeved on the outside of the driving wheel and the driven wheel. The slide bar is fixed to the bottom end of the horizontal plate along the length direction of the horizontal plate, and the drive rod... One end of the moving plate has a sliding hole adapted to the slide rod. The driving plate is slidably connected to the slide rod through the sliding hole. The other end of the driving plate has an insertion hole that penetrates the driving plate vertically. One end of the driving rod is fixed to the transmission belt, and the other end extends toward the conveyor belt and is inserted into the insertion hole. The detection component is fixed to the side of the driving plate facing the conveyor belt. When the motor drives the drive wheel to rotate and drives the transmission belt to move, the transmission belt drives the driving rod to move along the length of the horizontal plate. The driving rod drives the driving plate to slide along the slide rod, thereby driving the detection component to adjust its position along the width of the conveyor belt.

[0009] Furthermore, the detection component includes a color sensor, a housing, and a quick-release frame. The side of the housing facing the conveyor belt is fixedly connected to the side of the drive plate facing the conveyor belt. The quick-release frame is detachably covered on the outside of the housing. The color sensor is fixedly mounted on the side of the quick-release frame facing the conveyor belt. A locking component is provided between the housing and the quick-release frame. The locking component is used to quickly lock and disassemble the housing and the quick-release frame, thereby enabling quick replacement of the color sensor.

[0010] Furthermore, the locking assembly includes a locking member disposed on the box body and a connecting part disposed on the quick-release frame. The locking member can engage with the connecting part to lock the box body and the quick-release frame, and the locking member can be separated from the connecting part under external force to achieve disassembly.

[0011] Furthermore, the box body has two support blocks spaced apart along its width. The locking component includes two plug-in blocks and two springs. Through holes are respectively opened on the two side walls of the box body along its width at the positions corresponding to the two support blocks. The two plug-in blocks are slidably inserted into the two through holes. The two springs are respectively connected between the two plug-in blocks and the corresponding support blocks. The connecting part includes lock holes opened on the two side walls of the quick-assembly frame along its width. The lock holes are corresponding to the positions of the through holes. The end of the plug-in block away from the support block can pass through the through hole and be inserted into the lock hole. Under the elastic force of the spring, the plug-in block and the lock hole engage to lock the quick-assembly frame to the outside of the box body.

[0012] Furthermore, the locking assembly also includes a driving component for driving the insertion block to separate from the locking hole. The driving component includes a shaft, two take-up rollers, and two sets of pull straps. The shaft is located inside the box body along its length, with one end rotatably connected to one side wall of the box body along its length, and the other end passing through the other side wall of the box body along its length and extending to the outside of the box body. The two take-up rollers are fixedly sleeved on the shaft and spaced apart along the length of the shaft. Each set of pull straps has two straps, with one set of pull straps corresponding to one of the insertion blocks. One end of each of the two pull straps is connected to the two ends of the plug block facing the shaft, and the other end is screwed into the two take-up rollers radially in the positive direction along the top surface of each take-up roller. Another set of pull straps is provided corresponding to another plug block. One end of each of the two pull straps in this set is connected to the two ends of the plug block facing the shaft, and the other end is screwed into the two take-up rollers radially in the positive direction along the bottom surface of each take-up roller. When the shaft is rotated, the two take-up rollers rotate synchronously, and the pull straps on the top and bottom surfaces apply tension to the two plug blocks to drive the two plug blocks to move against the elastic force of the spring.

[0013] Furthermore, a knob for driving the shaft to rotate is provided at one end of the shaft protruding from the housing.

[0014] This utility model discloses a film edge detection device. A transverse movement mechanism adjusts the position of the detection components along the width of the conveyor belt, while an electric push rod adjusts the longitudinal height of the components. This allows for flexible adaptation to transfer films of different widths, solving the problems of poor flexibility of traditional fixed sensors and the need for cumbersome debugging or component replacement when switching production specifications, effectively improving production efficiency. Simultaneously, two detection components accurately monitor the status of the transfer film edge. Combined with a controller and alarm linkage, it can promptly detect lateral movement of the film edge, preventing a large amount of waste in subsequent processes and overcoming the shortcomings of manual inspection. Furthermore, the detection components adopt a quick-release frame and locking component design, enabling rapid replacement and maintenance of the color sensor, further ensuring the continuity and stability of the detection work, reducing maintenance costs, and shortening equipment downtime. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is an exploded view of the transverse movement mechanism in one embodiment of the present invention.

[0017] Figure 3 This is a cross-sectional view of the box body in one embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the quick-assembly frame in one embodiment of the present invention. The labels in the attached diagrams are as follows: Frame 1; Conveyor belt 2; First support 3; Alarm 31; Second support 4; Electric push rod 41; Horizontal plate 411; Guide rod 412; Limiting block 4121; Lateral movement mechanism 5; Motor 51; Drive wheel 52; Driven wheel 53; Transmission belt 54; Slide rod 55; Drive plate 56; Slide hole 561; Insertion hole 562; Drive rod 57; Sensor quick-release mechanism 6; Color sensor 61; Box 62; Support block 621; Quick-release frame 63; Controller 7; Locking assembly 8; Locking part 81; Insertion block 811; Spring 812; Joint 82; Locking hole 821; Drive part 83; Shaft 831; Knob part 8311; Take-up roller 832; Pull belt 833. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method: Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4This utility model discloses a film edge detection device, mounted on the frame 1 of a laminating and transferring machine. The frame 1 is equipped with a conveyor belt 2 for transporting finished paper. Specifically, it includes a first support 3 and a second support 4 spaced apart along the conveying direction of the conveyor belt 2; an alarm 31 mounted on the first support 3; two transverse movement mechanisms 5 mounted on the second support 4; two detection components 6 mounted on the two transverse movement mechanisms 5 facing the conveyor belt 2; and a controller 7 mounted on the second support 4. The first support 3 and the second support 4 span the conveyor belt 2 across its width. The two detection components 6 can be adjusted in position along the width of the conveyor belt 2 via their respective transverse movement mechanisms 5 to accommodate transfer films of different widths. The controller 7 is electrically connected to the two detection components 6, the alarm 31, and the two transverse movement mechanisms 5. This invention allows the position of the detection component 6 to be adjusted according to the width of the film by means of the transverse mechanism 5, so as to facilitate the detection of films of different widths. When the detection component 6 cannot detect the edge of the film, the detection component 6 transmits a signal to the controller 7. After receiving the signal, the controller 7 will activate the alarm 31 through the relay to remind the staff.

[0020] When the coated finished paper is conveyed on the conveyor belt 2 to the area below the second support 4, the detection component 6 begins detection. In this embodiment, to provide installation conditions for the transverse mechanism 5, an electric push rod 41 is fixedly installed on the top of the second support 4. The output end of the electric push rod 41 extends vertically downward through the second support 41 and is fixedly connected to a horizontal plate 411 extending along the width direction of the conveyor belt 2. Two transverse mechanisms 5 are spaced apart at the bottom end of the horizontal plate 411 along its length. The electric push rod 41 drives the horizontal plate 411 to rise and fall to adjust the longitudinal height of the two transverse mechanisms 5 and the detection component 6. Using the horizontal plate 411 as an intermediate carrier, the power of the electric push rod 41 can be synchronously transmitted to all components installed on it, realizing the overall adjustment of the height of the detection component 6. The horizontal plate 411 is connected to the output end of the electric push rod 41. The horizontal plate 411 serves as the core installation base, providing a bearing platform for the transverse mechanism 5, ensuring that each structure is firmly installed and its position is relatively fixed. When the electric push rod 41 extends or retracts, it drives the horizontal plate 411 to rise and fall vertically, thereby synchronously driving the horizontal movement mechanism 5 and the detection component 6 mounted on it to rise and fall, realizing the adjustment of the longitudinal height of the detection component 6. For films with light color and small color difference from paper, the distance between the detection component 6 and the film can be shortened by reducing the height of the horizontal plate 411, improving detection accuracy, and adapting to materials of different thicknesses, thus expanding the applicability of the equipment.

[0021] To ensure the accuracy of the lifting position and prevent the horizontal plate 411 from shifting during lifting, at least two parallel guide rods 412 are provided between the horizontal plate 411 and the second support 4. The bottom end of the guide rod 412 is fixed to the horizontal plate 411, and the top end slides through the second support 4 to limit the rotational shift of the horizontal plate 411. The top end of the guide rod 412 slides through the through hole of the second support 4, and the bottom end is fixed to the horizontal plate 411. Through precise sliding cooperation with the through hole, the movement trajectory of the horizontal plate 411 is strictly limited to the vertical direction. When the electric push rod 41 drives the horizontal plate 411 to lift, the guide rods 412 can prevent the horizontal plate 411 from shifting horizontally or rotating around the vertical axis due to uneven force or vibration, ensuring that the horizontal plate 411 always maintains a parallel posture with the conveyor belt 2. To limit the sliding of the guide rod 412, a limiting block 4121 is provided at the top of the guide rod 412 to prevent the guide rod 412 from disengaging from the second bracket 4. The diameter of the limiting block 4121 is larger than the diameter of the through hole through which the guide rod 412 passes through the second bracket 4. When the electric push rod 41 drives the horizontal plate 411 to slide the guide rod 412 upward to its limit position, the limiting block 4121 will contact the top surface of the second bracket 4 and form a mechanical block, strictly limiting the guide rod 412 from continuing to move upward. This ensures that part of the guide rod 412 always remains in the through hole, preventing it from completely disengaging from the second bracket 4. This can prevent equipment jamming or damage caused by component interference, or affect the delivery of finished paper, and reduce the risk of production accidents.

[0022] When inspecting the film coating on finished paper of different widths, the positions of the two inspection components 6 can be adjusted by the two transverse mechanisms 5. In this embodiment, the transverse mechanism 5 includes a motor 51, a drive wheel 52, a driven wheel 53, a transmission belt 54, a slide bar 55, a drive plate 56, and a drive rod 57. The motor 51 is fixed to the top surface of the horizontal plate 411. The horizontal plate 411 has a through hole that is coaxially adapted to the output shaft of the motor 51. The output shaft of the motor 51 passes vertically downward through the through hole and extends to the bottom of the horizontal plate 411. The drive wheel 52 is fixedly sleeved on the shaft section of the output shaft located below the horizontal plate 411. The driven wheel 53 is rotatably connected to the bottom end of the horizontal plate 411 through a wheel axle, and the drive wheel 52 and the driven wheel 53 are spaced apart along the length direction of the horizontal plate 411. The transmission belt 54 is engaged and sleeved on the outside of the drive wheel 52 and the driven wheel 53. The slide rod 55 is fixed to the bottom end of the horizontal plate 411 along its length. One end of the drive plate 56 has a sliding hole 561 adapted to the slide rod 55, and the drive plate 56 is slidably connected to the slide rod 55 through the sliding hole 561. The other end of the drive plate 56 has an insertion hole 562 that penetrates the drive plate 56 vertically. One end of the drive rod 57 is fixed to the transmission belt 54, and the other end extends toward the conveyor belt 2 and is inserted into the insertion hole 562. The detection component 6 is fixed to the side of the drive plate 56 facing the conveyor belt 2. When the motor 51 drives the drive wheel 52 to rotate and drives the transmission belt 54 to drive, the transmission belt 54 drives the drive rod 57 to move along the length of the horizontal plate 411. The drive rod 57 drives the drive plate 56 to slide along the slide rod 55, thereby driving the detection component 6 to adjust its position along the width of the conveyor belt 2. When it is necessary to adapt to transfer films of different widths, the controller 6 sends a drive signal to the motor 51. The motor 51 starts and drives the drive wheel 52 to rotate. The drive wheel 52 drives the transmission belt 54 to circulate along the outer periphery of the drive wheel 52 and the driven wheel 53 through meshing transmission. When the transmission belt 54 moves, the drive rod 57 fixed on it moves synchronously with the transmission belt 54 along the length direction of the horizontal plate 31. The drive rod 57 applies a pulling or pushing force to the drive plate 56 through the insertion hole 562, causing the drive plate 56 to slide along the length direction of the slide rod 55. During the sliding process of the drive plate 56, it drives the detection component 4 fixed on it to move synchronously along the width direction of the conveyor belt until it is adjusted to a detection position that matches the current width of the transfer film, thus completing the position adjustment.

[0023] When the detection component 6 needs to be replaced after prolonged use, in order to facilitate the replacement, in this embodiment, the detection component 6 includes a color sensor 61, a housing 62, and a quick-release frame 63. The upper side of the housing 62 is fixedly connected to the lower side of the drive plate 56. The quick-release frame 63 is detachably covered on the outside of the housing 62. The color sensor 61 is fixedly installed on the side of the quick-release frame 63 facing the conveyor belt 2. A locking component 8 is provided between the housing 62 and the quick-release frame 63. The locking component 8 is used to realize the quick locking and disassembly of the housing 62 and the quick-release frame 63, thereby realizing the quick replacement of the color sensor 61. Specifically, the housing 62 is a hollow rectangular shell, and its side facing the conveyor belt is fixedly connected to the side of the drive plate 56 facing the conveyor belt by bolts. The quick-release frame 63 is a frame structure adapted to the shape of the box body 62. Its inner sidewall is clearance-fitted with the outer sidewall of the box body 62, and it can be sleeved and covered on the outside of the box body 62 along its height direction. The color sensor 41 is fixedly mounted on the side of the quick-release frame 63 facing the conveyor belt by screws, with its detection end facing the surface of the conveyor belt 2, for collecting color signals from the edge of the film. A locking assembly 8 is provided between the box body 62 and the quick-release frame 63. The locking assembly 8 is distributed on the corresponding sidewalls of the box body 62 and the quick-release frame 63, for quickly locking the two after the quick-release frame 63 covers the box body 62, and can be released under external force to separate the quick-release frame 63 from the box body 62. With the cooperation of the quick-install frame 63 and the locking component 8, the color sensor 41 can be quickly installed and removed without disassembling the connection between the box 62 and the drive board 56. This solves the problem of cumbersome and time-consuming replacement caused by the fixed installation of traditional sensors, greatly reduces equipment downtime for maintenance, and improves production continuity.

[0024] The locking assembly 8 includes a locking member 81 disposed on the housing 62 and a connecting portion 82 disposed on the quick-release frame 63. The locking member 81 can engage with the connecting portion 82 to lock the housing 62 and the quick-release frame 63, and the locking member 81 can be separated from the connecting portion 82 under external force to achieve disassembly. In this embodiment, two support blocks 621 are spaced apart along the width direction inside the housing 62. The locking member 81 includes two plug-in blocks 811 and two springs 812. Through holes are respectively opened on the two side walls of the housing 62 along the width direction corresponding to the positions of the two support blocks 621. The two plug-in blocks 811 are slidably inserted into the two through holes, and the two springs 812 are respectively connected between the two plug-in blocks 811 and the support blocks 621. The connecting portion 82 includes locking holes 821 formed on both side walls of the quick-release frame 63 along its width direction. The locking holes 821 correspond to the positions of the through holes. The end of the insertion block 811 away from the support block 621 can pass through the through hole and be inserted into the locking hole 821. Under the elastic force of the spring 812, the insertion block 811 engages with the locking hole 821 to lock the quick-release frame 63 to the outside of the box body 62. The support block 621 is a cuboid and is fixed to the inner side wall of the box body 62, serving as a support and limiting function. When the quick-release frame 63 is wrapped around the outside of the box body 62, the inner side wall of the quick-release frame 63 will first contact and press the end of the insertion block 811 extending out of the box body 62, forcing the insertion block 811 to move into the box body 62 and compress the spring 812. When the quick-release frame 63 completely covers the box body 62, the locking hole 821 of the quick-release frame 63 is precisely aligned with the through hole of the box body 62. At this time, the spring 812 releases its elastic force, pushing the plug-in block 811 to move outward of the box body 62. Its protruding end passes through the through hole and inserts into the locking hole 821. Through the snap-fit ​​engagement of the plug-in block 811 and the locking hole 821, the quick-release frame 63 is locked to the outside of the box body 62. When it is necessary to disassemble the quick-release frame 63, press the protruding ends of the two plug-in blocks 811 into the box body 62, forcing the plug-in blocks 811 to compress the spring 812 and exit from the locking hole 821. At this time, the locking state is released, and the quick-release frame 63 can be directly pulled out from the outside of the box body 62 to complete the disassembly.

[0025] To facilitate the separation of the plug-in block 811 from the locking hole 821 and achieve quick disassembly of the quick-release frame 63 from the box body 62, the locking assembly 8 in this embodiment further includes a driving component 83 for driving the plug-in block 811 to separate from the locking hole 821. The driving component 83 includes a shaft 831, two take-up rollers 832, and two sets of pull straps 833. Specifically, the shaft 831 is located inside the box body 62 along its length direction. One end of the shaft 831 is rotatably connected to one side wall of the box body 62 along its length direction, and the other end passes through the other side wall of the box body 62 along its length direction and extends to the outside of the box body 62. The two take-up rollers 832 are fixedly sleeved on the shaft 831 and spaced apart along the length direction of the shaft 831. Each set of pull straps 833 has two straps. One set of pull straps 833 corresponds to one of the insertion blocks 811. One end of each of the two pull straps in this set is connected to the two ends of the insertion block 811 facing the shaft 831, and the other end is screwed into the two take-up rollers 832 radially in the positive direction along the top surface of each roller. The other set of pull straps corresponds to the other insertion block 811. One end of each of the two pull straps in this set is connected to the two ends of the insertion block 811 facing the shaft 831, and the other end is screwed into the two take-up rollers 832 radially in the positive direction along the bottom surface of each roller. When the shaft 831 is rotated, the two take-up rollers 832 rotate synchronously. The pull straps 833 on the top and bottom surfaces apply tension to the two insertion blocks 811, causing them to move against the elastic force of the spring 812. When the quick-release frame 63 needs to be disassembled, the shaft 831 is rotated clockwise by an external driving force, such as manually rotating the protruding end of the shaft. At this time, the shaft 831 simultaneously drives the two take-up rollers 832 to rotate clockwise. The pull strap on the top surface of the take-up roller 832 is tightened as the roller rotates, applying a pulling force towards the inside of the housing 62 to the first insertion block 811. Similarly, the pull strap on the bottom surface of the take-up roller 832 is tightened as the roller rotates, applying a pulling force towards the inside of the housing 62 to the second insertion block 811. Under the action of the pulling force, the two insertion blocks 811 overcome the elastic force of the corresponding springs 812 and move synchronously into the housing 62. Their ends extending out of the housing 62 exit from the locking hole 821 of the quick-release frame 63, releasing the locking state. The quick-release frame 63 can then be directly pulled out from the outside of the housing 62, completing the disassembly. After the shaft 831 is released, the elastic force of the spring 812 pushes the plug block 811 to reset, and the pull belt moves with the plug block to release from the take-up roller 832. The shaft 831 then rotates in the opposite direction to reset. For the convenience of the operator, a knob 8311 for driving the shaft 831 to rotate is provided at the end of the shaft 831 that protrudes from the housing 62.The knob part 8311 increases the force-bearing area, which more efficiently transmits the operator's hand force to the shaft 831, reducing the operating force compared to directly rotating the thin shaft.

[0026] This utility model discloses a film edge detection device with the following advantages: By adjusting the position of the detection component along the width of the conveyor belt through a transverse mechanism, it adapts to transfer films of different widths, solving the problems of poor flexibility in the fixed installation of traditional sensors and cumbersome debugging when switching production specifications, thus improving production efficiency. The electric push rod drives the detection component to rise and fall, shortening the distance to light-colored films with small color differences to improve detection accuracy, and adapting to materials of different thicknesses, expanding the equipment's applicability. Simultaneously, the guide rod ensures precise lifting and lowering, preventing horizontal plate deviation and reducing the risk of production accidents. Through the cooperation of the quick-release frame and locking component, the color sensor can be quickly replaced without disassembling the housing, reducing equipment downtime for maintenance, ensuring production continuity, and triggering an alarm when the detection component fails to detect the film edge, effectively preventing a large amount of waste from subsequent processes.

[0027] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A film edge detection device, mounted on the frame (1) of a laminating and transferring machine, wherein the frame (1) is provided with a conveyor belt (2) for conveying finished paper, characterized in that: The system includes a first support (3), a second support (4) spaced apart along the conveying direction of the conveyor belt (2), an alarm (31) mounted on the first support (3), two transverse mechanisms (5) mounted on the second support (4), two detection components (6) mounted on the two transverse mechanisms (5) facing the conveyor belt (2), and a controller (7). The first support (3) and the second support (4) span the top of the conveyor belt (2) along the width direction. The two detection components (6) can be adjusted in position along the width direction of the conveyor belt (2) by the corresponding transverse mechanisms (5) to adapt to transfer films of different widths. The controller (7) is electrically connected to the two detection components (6), the alarm (31), and the two transverse mechanisms (5).

2. The membrane edge detection device according to claim 1, characterized in that: An electric push rod (41) is fixedly installed on the top of the second bracket (4). The output end of the electric push rod (41) passes vertically downward through the second bracket (4) and is fixedly connected to a horizontal plate (411) extending along the width direction of the conveyor belt (2). Two transverse movement mechanisms (5) are spaced apart at the bottom end of the horizontal plate (411) along the length direction of the horizontal plate (411). The electric push rod (41) drives the horizontal plate (411) to rise and fall to adjust the longitudinal height of the two transverse movement mechanisms (5) and the two detection components (6).

3. The membrane edge detection device according to claim 2, characterized in that: At least two parallel guide rods (412) are provided between the horizontal plate (411) and the second bracket (4). The bottom end of the guide rod (412) is fixed to the horizontal plate (411), and the top end slides through the second bracket (4) to limit the rotation and offset of the horizontal plate (411).

4. The membrane edge detection device according to claim 3, characterized in that: The top end of the guide rod (412) is provided with a limiting block (4121) to prevent the guide rod (412) from disengaging from the second bracket (4).

5. The membrane edge detection device according to claim 2, characterized in that: The transverse mechanism (5) includes a motor (51), a drive wheel (52), a driven wheel (53), a transmission belt (54), a slide bar (55), a drive plate (56), and a drive rod (57); the motor (51) is fixed to the top surface of the transverse plate (411), and the transverse plate (411) has a through hole that is coaxially adapted to the output shaft of the motor (51). The output shaft of the motor (51) passes vertically downward through the through hole and extends to the bottom of the transverse plate (411). The drive wheel (52) is fixedly sleeved on the transverse plate. On the shaft segment below the horizontal plate (411) where the output shaft is located, the driven wheel (53) is rotatably connected to the bottom end of the horizontal plate (411) via a wheel axle, and the driving wheel (52) and the driven wheel (53) are spaced apart along the length direction of the horizontal plate (411). The transmission belt (54) is engaged and sleeved on the outside of the driving wheel (52) and the driven wheel (53). The slide rod (55) is fixed to the bottom end of the horizontal plate (411) along the length direction of the horizontal plate (411). One end of the drive plate (56) is provided with a sliding hole (561) adapted to the slide rod (55). The drive plate (56) is slidably connected to the slide rod (55) through the sliding hole (561). The other end of the drive plate (56) is provided with an insertion hole (562) that penetrates the drive plate (56) in a vertical direction. One end of the drive rod (57) is fixed to the transmission belt (54), and the other end extends toward the conveyor belt (2) and is inserted into the insertion hole (562). The detection... The component (6) is fixed to the side of the drive plate (56) facing the conveyor belt (2); when the motor (51) drives the drive wheel (52) to rotate and drives the transmission belt (54) to drive, the transmission belt (54) drives the drive rod (57) to move along the length direction of the cross plate (411), and the drive rod (57) drives the detection component (6) to adjust its position along the width direction of the conveyor belt (2) by driving the drive plate (56) to slide along the slide bar (55).

6. The membrane edge detection device according to claim 5, characterized in that: The detection component (6) includes a color sensor (61), a housing (62), and a quick-release frame (63). The upper surface of the housing (62) is fixedly connected to the lower surface of the drive plate (56). The quick-release frame (63) is detachably covered by the housing (62) from below. The color sensor (61) is fixedly installed on the side of the quick-release frame (63) facing the conveyor belt (2). A locking component (8) is provided between the housing (62) and the quick-release frame (63). The locking component (8) is used to realize the quick locking and disassembly of the housing (62) and the quick-release frame (63), thereby realizing the quick replacement of the color sensor (61).

7. The membrane edge detection device according to claim 6, characterized in that: The locking assembly (8) includes a locking member (81) disposed on the housing (62) and a connecting part (82) disposed on the quick-release frame (63). The locking member (81) can engage with the connecting part (82) to lock the housing (62) and the quick-release frame (63), and the locking member (81) can be separated from the connecting part (82) under external force to achieve disassembly.

8. The membrane edge detection device according to claim 7, characterized in that: The box body (62) has two support blocks (621) spaced apart along its width. The locking member (81) includes two plug-in blocks (811) and two springs (812). The two side walls of the box body (62) along its width are respectively provided with through holes at the positions corresponding to the two support blocks (621). The two plug-in blocks (811) are respectively slidably inserted into the two through holes. The two springs (812) are respectively connected between the two plug-in blocks (811) and the support blocks (621). The connecting part (82) includes a locking hole (821) on both sides of the quick-release frame (63) along the width direction. The locking hole (821) corresponds to the position of the through hole. The end of the plug block (811) away from the support block (621) can pass through the through hole and be inserted into the locking hole (821). Under the elastic force of the spring (812), the plug block (811) and the locking hole (821) engage to lock the quick-release frame (63) to the outside of the box body (62).

9. The membrane edge detection device according to claim 8, characterized in that: The locking assembly (8) further includes a driving member (83) for driving the plug-in block (811) to separate from the lock hole (821). The driving member (83) includes a shaft (831), two take-up rollers (832), and two sets of pull straps (833). The shaft (831) is located inside the box body (62) along the length direction of the box body (62). One end of the shaft (831) is rotatably connected to one side wall of the box body (62) along the length direction, and the other end passes through the other side wall of the box body (62) along the length direction and extends to the outside of the box body (62). The two take-up rollers (832) are fixedly sleeved on the shaft (831) and are spaced apart along the length direction of the shaft (831). Each set of pull straps (833) has two straps, and one set of pull straps (833) corresponds to one of the plug-in blocks (811). The two straps in this set... One end of the pull strap (833) is connected to both ends of the plug block (811) facing the shaft (831), and the other end is screwed into the two take-up rollers (832) radially in the positive direction along the top surface of the two take-up rollers (832); another set of pull straps is provided corresponding to another plug block (811). One end of the two pull straps (833) in this set is connected to both ends of the plug block (811) facing the shaft (831), and the other end is screwed into the two take-up rollers (832) radially in the positive direction along the bottom surface of the two take-up rollers (832); when the shaft (831) is rotated, the two take-up rollers (832) rotate synchronously, and the pull straps (833) on the top and bottom surfaces respectively apply a pulling force to the two plug blocks (811) to drive the two plug blocks (811) to move against the elastic force of the spring (812).

10. The membrane edge detection device according to claim 9, characterized in that: The shaft (831) protruding from the box (62) has a knob (8311) for driving the shaft (831) to rotate.

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