Optical curtain device for a film production apparatus

By introducing an automated dust removal mechanism into the light curtain device, using an electric telescopic rod and soft brush to clean the dust on the transmitter surface, the problem of detection errors caused by dust obstruction is solved, and the stability and convenience of the light curtain device are improved.

CN224364669UActive Publication Date: 2026-06-16SHANGHAI BAIXIN MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI BAIXIN MATERIAL CO LTD
Filing Date
2025-06-24
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The transmitters of existing light curtain devices are easily obscured by dust after prolonged use, leading to detection errors or inaccuracies and affecting normal operation.

Method used

A light curtain device was designed, which includes a dust removal mechanism. It uses an electric telescopic rod and a soft brush to clean the dust on the surface of the transmitter. The motor drives the screw to move the synchronous plate and the soft brush, thereby achieving automated cleaning.

Benefits of technology

It reduces manual labor costs, ensures the normal use of the transmitter, improves the stability and convenience of the light curtain device, and prevents detection errors.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224364669U_ABST
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Abstract

The application discloses a light curtain device of a film generating equipment, relates to the field of light curtain devices, and comprises a frame body, a cable guide frame is fixedly installed on the frame body, a shell is fixedly installed at the bottom of the frame body, and a transmitter is arranged in the shell respectively. The application drives the screw rod to rotate through the control of starting the reciprocating motor, the rotation of the screw rod drives the lifting block and the synchronous plate to move downwards, the synchronous plate moves downwards and drives the two connecting plates and the soft brush to move downwards, when moving to one side of the transmitter, the electric telescopic rod is started to make contact with the transmitter, and the soft brush is moved back and forth, so that the dust adsorbed on the surface of the transmitter can be treated, the labor cost can be reduced, the transmitter can be cleaned in time, the normal use of the transmitter is not affected, and the stability during use can be improved.
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Description

Technical Field

[0001] This application relates to the field of light curtain devices, and more particularly to a light curtain device for a thin film forming apparatus. Background Technology

[0002] During the film formation process, the use of a light curtain device can effectively prevent operators from accidentally entering hazardous areas, thus avoiding injury. When a person or object enters the protected area of ​​the light curtain, the light curtain will immediately shut down the machine to ensure the safety of the operators.

[0003] Existing light curtain devices use transmitters to emit infrared beams to form a light curtain array, which can provide protection. However, the transmitters are exposed, so after prolonged use, dust and impurities in the gas will adhere to the surface of the transmitters. The dust will block the light, leading to detection errors or inaccuracies, thus affecting the normal operation of the light curtain device and the detection effect. Utility Model Content

[0004] To improve the stability of the light curtain device during use, this application provides a light curtain device for a thin film forming equipment.

[0005] The light curtain device for a thin film forming equipment provided in this application adopts the following technical solution: A light curtain device for a thin film forming equipment includes a frame, a cable guide frame is fixedly installed on the frame, a housing is fixedly installed at the bottom of the frame, a transmitter, a receiver and a controller connected to the equipment are respectively provided in the housing, a cable is provided on one side of the housing, and a dust removal mechanism for cleaning the surface of the transmitter is provided on the housing.

[0006] The dust removal mechanism includes a synchronous plate that can be lifted and lowered on one side of the housing. Two connecting plates are symmetrically fixedly installed on one side of the synchronous plate. Corresponding electric telescopic rods are fixedly installed on the side of the two connecting plates that are close to each other. Corresponding mounting plates are fixedly installed on the output ends of the two electric telescopic rods. Corresponding cleaning rods can be detachably installed on one side of the two mounting plates. Multiple soft brushes are provided on one side of the two cleaning rods. A lifting mechanism is provided on one side of the synchronous plate.

[0007] By adopting the above technical solution, the output end of the electric telescopic rod will drive the mounting plate and soft brush to move towards the transmitter and make contact with it. The soft brush will move back and forth to remove the dust adsorbed on the transmitter surface, thereby reducing manual labor costs and allowing for timely cleaning. Therefore, it will not affect the normal use of the transmitter and can improve its stability during use.

[0008] Preferably, the lifting mechanism includes a housing disposed on one side of the housing, a screw is rotatably installed inside the housing, a lifting block is screwed onto the screw, the lifting block is fixedly installed with a synchronization plate, a support frame is fixedly installed on the top of the housing, a reciprocating motor is fixedly installed on the support frame, and the output end of the reciprocating motor is fixedly installed with one end of the screw.

[0009] By adopting the above technical solution, the reciprocating motor is controlled to start, and the output end of the reciprocating motor will drive the screw to rotate. The rotation of the screw will drive the lifting block and the synchronous plate to move downward. The downward movement of the synchronous plate will also drive the two connecting plates and the soft brush to move downward.

[0010] Preferably, corresponding mounting bases are fixedly installed on both sides of the mounting plate, and corresponding fixing brackets are fixedly installed on both sides of the housing.

[0011] By adopting the above technical solution and setting up an installation base, an auxiliary installation function can be achieved.

[0012] Preferably, both the mounting base and the fixing bracket are installed with external bolts.

[0013] By adopting the above technical solution, both the mounting base and the fixing bracket are installed with external bolts, which facilitates disassembly and assembly.

[0014] Preferably, a housing and a control panel are fixedly installed on one side of the housing.

[0015] By adopting the above technical solution and setting up a box, an auxiliary installation and protection function can be achieved.

[0016] Preferably, the box is equipped with an infrared sensor for monitoring the light beam, and a lid is hinged to one side of the box.

[0017] By adopting the above technical solution, an infrared sensor can be set up to detect whether the light beam is blocked.

[0018] Preferably, an installation opening is provided on one side of the box cover, and a transparent window is fixedly installed in the installation opening. The infrared sensor, control panel and reciprocating motor are electrically connected.

[0019] By adopting the above technical solution, the infrared sensor can be protected from dust through a transparent window without affecting normal use, thus improving the convenience and flexibility of use.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application employs a soft brush and other components. By controlling the start of a reciprocating motor, the output of the motor drives a screw to rotate. The rotation of the screw causes the lifting block and synchronous plate to move downwards. The downward movement of the synchronous plate causes the two connecting plates and the soft brush to move downwards as well. When the brush reaches one side of the transmitter, the electric telescopic rod is activated to contact the transmitter. The soft brush then moves back and forth to remove dust adhering to the transmitter surface. This reduces labor costs and allows for timely cleaning without affecting the normal use of the transmitter, thus improving its stability during use.

[0022] 2. This application utilizes a housing or similar component. The housing protects the infrared sensor and facilitates its assembly and disassembly. The transparent window provides dust protection for the infrared sensor without affecting its normal use, thus improving ease of use and flexibility. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a light curtain device in a thin film forming apparatus according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram illustrating the dust removal structure, as shown in the embodiments of this application.

[0025] Figure 3 This is a partial unfolded schematic diagram illustrating the dust removal structure in the embodiments of this application;

[0026] Figure 4 This is a partial unfolded schematic diagram illustrating the dust removal structure in the embodiments of this application;

[0027] Figure 5 This is an exploded view of the main protective structure in the embodiments of this application;

[0028] Reference numerals: 1. Frame; 2. Cable guide frame; 3. Housing; 4. Cable; 5. Transmitter; 6. Receiver; 7. Box; 8. Control panel; 9. Connecting plate; 10. Synchronization plate; 11. Cabinet; 12. Electric telescopic rod; 13. Mounting plate; 14. Cleaning rod; 15. Soft brush; 16. Mounting base; 17. Fixing bracket; 18. Screw; 19. Lifting block; 20. Support frame; 21. Reciprocating motor; 22. Box cover; 23. Infrared sensor; 24. Mounting port; 25. Transparent window. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0030] This application discloses a light curtain device for a thin film generation apparatus.

[0031] Reference Figure 1-3 A light curtain device for a thin film generation equipment includes a frame 1, a cable guide frame 2 fixedly installed on the frame 1, a housing 3 fixedly installed at the bottom of the frame 1, a transmitter 5, a receiver 6 and a controller connected to the equipment respectively inside the housing 3. The controller is a prior art product, so its specific usage and model are not described in detail. A cable 4 is provided on one side of the housing 3. The housing 3 is provided with a dust removal mechanism for cleaning the surface of the transmitter 5 and a protective mechanism provided on one side of the housing 3.

[0032] The dust removal mechanism includes a synchronous plate 10 that can be lifted and installed on one side of the housing 3. Two connecting plates 9 are symmetrically fixedly installed on one side of the synchronous plate 10. A corresponding electric telescopic rod 12 is fixedly installed on the side of the two connecting plates 9 that are close to each other. A corresponding mounting plate 13 is fixedly installed on the output end of the two electric telescopic rods 12. A corresponding cleaning rod 14 can be detachably installed on one side of the two mounting plates 13. The cleaning rod 14 can play an auxiliary role in installation. Multiple soft brushes 15 are provided on one side of the two cleaning rods 14. The soft brushes can play an auxiliary role in cleaning.

[0033] The dust removal mechanism also includes a housing 11 located on one side of the housing 3. A screw 18 is rotatably installed inside the housing 11. A lifting block 19 is screwed onto the screw 18. The lifting block 19 is fixedly installed with the synchronous plate 10. A support frame 20 is fixedly installed on the top of the housing 11. A reciprocating motor 21 is fixedly installed on the support frame 20. The reciprocating motor 21 is existing technology, so the specific model is not described in detail. The output end of the reciprocating motor 21 is fixedly installed with one end of the screw 18.

[0034] In use, by controlling the start of the reciprocating motor 21, the output end of the reciprocating motor 21 drives the screw 18 to rotate. The rotation of the screw 18 drives the lifting block 19 and the synchronous plate 10 to move downward. The downward movement of the synchronous plate 10 drives the two connecting plates 9 and the soft brush 15 to move downward as well. When it moves to one side of the transmitter 5, by controlling the start of the electric telescopic rod 12, the output end of the electric telescopic rod 12 drives the mounting plate 13 and the soft brush 15 to move towards the transmitter 5 and make contact with the transmitter 5. The soft brush 15 moves back and forth, which can remove the dust adsorbed on the surface of the transmitter 5, thereby reducing labor costs and cleaning it in time. Therefore, it will not affect the normal use of the transmitter 5 and can improve the stability during use.

[0035] Reference Figure 2-3The mounting plate 13 has corresponding mounting bases 16 fixedly installed on both sides, and the housing 11 has corresponding fixing brackets 17 fixedly installed on both sides. The mounting bases 16 and fixing brackets 17 are all installed with external bolts.

[0036] When in use, the mounting base 16 and the fixing bracket 17 are set to assist in the installation, which also makes it easier to disassemble and reassemble later.

[0037] Reference Figure 3-5 The protective mechanism includes a box 7 and a control panel 8, which are fixedly installed on one side of the housing 3. An infrared sensor 23 for monitoring the beam is provided inside the box 7. A box cover 22 is hinged to one side of the box 7. An installation port 24 is opened on one side of the box cover 22. A transparent window 25 is fixedly installed inside the installation port 24. The infrared sensor 23, the control panel 8 and the reciprocating motor 21 are electrically connected.

[0038] In use, the infrared sensor 23 can be protected by the housing 7 and is easy to install and remove, while the infrared sensor 23 can be protected from dust by the transparent window 25. The dust protection does not affect normal use, thus improving the convenience and flexibility of use.

[0039] The infrared sensor 23, control panel 8, and other motor components in this application are all existing technology products, so the specific usage process and specific models are not described in detail.

[0040] The implementation principle of the light curtain device of the thin film forming equipment in this application embodiment is as follows: When in use, the transmitter 5 is responsible for emitting infrared beams to form a light curtain array, and the receiver 6 receives the beams from the transmitter 5 and detects whether the beams are blocked. The controller processes the signal of the receiver 6 and triggers a safety response (such as stopping the equipment). When an object enters the protected area of ​​the light curtain, the receiver 6 will detect that the beams are blocked and trigger a safety response through the controller, such as an emergency stop of the equipment, to prevent accidents from happening.

[0041] When the infrared sensor 23 detects dust obstructing the beam, it controls the activation of the reciprocating motor 21. The output of the reciprocating motor 21 drives the screw 18 to rotate. The rotation of the screw 18 causes the lifting block 19 and the synchronous plate 10 to move downwards. The downward movement of the synchronous plate 10 causes the two connecting plates 9 and the soft brush 15 to move downwards as well. When they move to one side of the transmitter 5, it controls the activation of the electric telescopic rod 12. The output of the electric telescopic rod 12 causes the mounting plate 13 and the soft brush 15 to move towards the transmitter 5 and come into contact with it. The soft brush 15 moves back and forth, thus removing the dust adsorbed on the surface of the transmitter 5. This reduces labor costs and allows for timely cleaning, so it does not affect the normal use of the transmitter 5 and improves its stability during use.

[0042] The housing 7 protects the infrared sensor 23 and facilitates its disassembly and assembly. The transparent window 25 provides dust protection for the infrared sensor 23 without affecting its normal use, thus improving its convenience and flexibility during use.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A light curtain device for a thin film generation apparatus, comprising a frame (1), characterized in that: A cable guide frame (2) is fixedly installed on the frame (1), and a housing (3) is fixedly installed at the bottom of the frame (1). A transmitter (5), a receiver (6) and a controller connected to the device are respectively provided in the housing (3). A cable (4) is provided on one side of the housing (3), and a dust removal mechanism for cleaning the surface of the transmitter (5) is provided on the housing (3). The dust removal mechanism includes a synchronous plate (10) that can be lifted and lowered on one side of the housing (3). Two connecting plates (9) are symmetrically fixedly installed on one side of the synchronous plate (10). A corresponding electric telescopic rod (12) is fixedly installed on the side of the two connecting plates (9) that are close to each other. A corresponding mounting plate (13) is fixedly installed on the output end of the two electric telescopic rods (12). A corresponding cleaning rod (14) can be detachably installed on one side of the two mounting plates (13). A plurality of soft brushes (15) are provided on one side of the two cleaning rods (14). A lifting mechanism is provided on one side of the synchronous plate (10).

2. The light curtain device for a thin film forming apparatus according to claim 1, characterized in that: The lifting mechanism includes a housing (11) disposed on one side of the housing (3), a screw (18) is rotatably installed inside the housing (11), a lifting block (19) is screwed onto the screw (18), the lifting block (19) is fixedly installed with the synchronous plate (10), a support frame (20) is fixedly installed on the top of the housing (11), a reciprocating motor (21) is fixedly installed on the support frame (20), and the output end of the reciprocating motor (21) is fixedly installed with one end of the screw (18).

3. The light curtain device for a thin film forming apparatus according to claim 2, characterized in that: The mounting plate (13) is fixedly mounted with corresponding mounting bases (16) on both sides, and the housing (11) is fixedly mounted with corresponding fixing brackets (17) on both sides.

4. The light curtain device for a thin film forming apparatus according to claim 3, characterized in that: Both the mounting base (16) and the fixing bracket (17) are installed with external bolts.

5. The light curtain device for a thin film forming apparatus according to claim 1, characterized in that: A box body (7) and a control panel (8) are fixedly installed on one side of the housing (3).

6. The light curtain device for a thin film forming apparatus according to claim 5, characterized in that: The box (7) is equipped with an infrared sensor (23) for monitoring the beam, and a box cover (22) is hinged to one side of the box (7).

7. The light curtain device for a thin film forming apparatus according to claim 6, characterized in that: The box cover (22) has an installation port (24) on one side, and a transparent window (25) is fixedly installed in the installation port (24). The infrared sensor (23), control panel (8) and reciprocating motor (21) are electrically connected.