Protection device of safety light curtain
By using a driving motor and an electric pusher to automatically cover the lens in the safety light curtain protection device, the problem of manually pulling the magnet in the prior art overcomes the work of the rotary spring, and achieves a time-saving and labor-saving automatic protection effect.
Patent Information
- Application Number
- CN202421232917.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The protection device of the existing safety light curtain requires manual pulling of magnets to overcome the work of the rotary spring, increase the labor intensity of workers, and requires pulling two magnets in sequence, which is very troublesome.
A protective device including a base, slider, slider, column, drive motor, transmission plate, barrier block, limit assembly and adjustment assembly is designed. The drive motor drives the transmission plate and barrier block to slide, and automatically covers the transmitter and The receiver lens eliminates manual resistance overcoming and uses electric push rods and servo motors to achieve stability and protection of the limit rod.
It does not require manual overcoming resistance to do work, save time and effort, and automatically protects the transmitter and receiver lenses, improving usage efficiency and stability, reducing labor intensity and operational complexity.
Smart Images
Figure CN222256090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a protection device, in particular to a protection device for a safety light curtain, and belongs to the technical field of photoelectric safety protection devices. Background Art
[0002] Safety light curtains are also called photoelectric safety protection devices. They are mainly composed of two parts: a transmitter and a receiver. The transmitter emits modulated infrared light, which is then received by the receiver to form a light curtain protection net. When an object enters the protection net, the light is blocked by the object, and the receiver responds through the internal control circuit, thereby outputting a safety switch signal to achieve emergency braking of the machine tool and ensure the safety of workers.
[0003] Among them, the "safety light curtain protection device" disclosed in the application number "CN202321872048.2" "comprises a transmitter body and a receiver body, wherein a protection cavity is provided on the upper side of the interior of the transmitter body and the upper side of the interior of the receiver body, and the inner walls of the two protection cavities are provided with a protection mechanism, and the protection mechanism comprises a winding rod, and the front and rear ends of the winding rod are respectively rotatably connected to the front and rear sides of the inner wall of the protection cavity, and the rod wall of the winding rod is provided with a protective film, and the rod wall of the winding rod is located on the front and rear sides of the protective film and is fixedly connected with a limiting plate. When not in use, the utility model can protect the transmitter body lens of the safety light curtain and the receiving lens of the receiver body to prevent the transmitter body lens of the safety light curtain and the receiving lens of the receiver body from corrosion or wear, thereby increasing the service life of the safety light curtain, reducing the use cost of the safety light curtain, and improving the practicality of the full light curtain."
[0004] However, the above method still has the following defects: it is necessary to manually pull the magnet to cause the magnet to absorb the iron block so that the protective film can cover the transmitter body lens and the receiver body receiving lens. Therefore, when protecting the transmitter body and the receiver body, it is necessary to overcome the work of the rotary spring, which increases the labor intensity of the workers, and it is necessary to pull the two magnets in turn, which is very troublesome. Utility Model Content
[0005] The utility model aims to provide a protective device for a safety light curtain to solve the existing problems of needing to overcome the work of a return spring when protecting a transmitter body and a receiver body, and needing to pull two magnets in sequence, which is time-consuming and labor-intensive.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a safety light curtain, comprising a base, a slide groove is provided at the top of the base, two sliders are slidably connected to the inner wall of the slide groove, columns are provided at the top of the two sliders, mounting grooves are provided on the surfaces of the two columns, a transmitter body is provided on the inner wall of one of the mounting grooves, a receiver body is provided on the inner wall of the other mounting groove, a cylinder is provided at one end of the two columns, a driving motor is provided on the inner wall of the two cylinders, a transmission plate is provided on the drive shafts of the two driving motors, a blocking block is provided on one side of the two transmission plates, two limit assemblies are provided at the top of the base, and an adjustment assembly is provided on one side of the base.
[0007] As a preferred technical solution of the utility model, the inner surfaces of the two blocking blocks are respectively slidably connected to the surfaces of the two pillars, the surfaces of the two blocking blocks are provided with through holes, and the two driving motors are both forward and reverse reduction motors.
[0008] As a preferred technical solution of the utility model, the surfaces of the two cylinders are provided with inferior arc grooves that slide with the surface of the transmission plate, and the surfaces of the two cylinders are respectively slidably connected to the inner surfaces of the two blocking blocks.
[0009] As a preferred technical solution of the utility model, the two limit assemblies each include a connecting box, the two connecting boxes are respectively arranged at one end of the two cylinders, the inner walls of the two connecting boxes are provided with partitions, electric push rods are provided between the two connecting boxes and the corresponding partitions, and the telescopic ends of the two electric push rods are provided with limit rods that slide with the through holes.
[0010] As a preferred technical solution of the utility model, the surfaces of the two connection boxes are respectively slidably connected to the inner surfaces of the two blocking blocks, and the surfaces of the two connection boxes are provided with sliding holes that slide with the surfaces of the limiting rods.
[0011] As a preferred technical solution of the utility model, the adjustment component includes a bidirectional screw and a servo motor. The bidirectional screw is rotatably arranged on the inner wall of the slide groove through a bearing. The contact parts of the bidirectional screw and the two sliders are threadedly connected through a screw nut. The servo motor is arranged on one side of the base. The servo motor is a forward and reverse motor. The transmission shaft of the servo motor is connected to one end of the bidirectional screw through a coupling.
[0012] As a preferred technical solution of the utility model, a positioning frame is provided on one side of the base, and a protective shell is slidably connected to the surface of the positioning frame. The protective shell and the positioning frame are both mounted on the outside of the servo motor, and connecting plates are provided on both sides of the base. Two connecting holes are provided on the surfaces of the two connecting plates.
[0013] As a preferred technical solution of the utility model, one side of the protective shell is slidably connected to one side of the base, the front and back of the protective shell are provided with heat dissipation grooves, the inner walls of the two heat dissipation grooves are provided with dustproof nets, the front and back of the protective shell are provided with mounting plates, and the two mounting plates are connected to one side of the base by screws.
[0014] Compared with the related art, the protective device of a safety light curtain provided by the utility model has the following beneficial effects:
[0015] 1. Two driving motors drive two blocking blocks to rotate through two transmission plates. The two blocking blocks slide along the surface of the corresponding columns until the two blocking blocks cover the two mounting slots, thereby protecting the transmitter body and the receiver body. Compared with the prior art, there is no need to manually overcome resistance and do work, and there is no need to pull the two magnets in sequence, which saves time and effort;
[0016] 2. The telescopic end of the electric push rod will extend and push the limit rod to move, causing the limit rod to slide into the through hole, thereby limiting the barrier block and preventing the barrier block from rotating along the surface of the column due to a strong external force impact, thereby improving the stability of the barrier block and ensuring the protective effect of the barrier block. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;
[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;
[0020] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure at B;
[0021] Figure 5 It is a schematic diagram of the explosion structure of the column of the utility model;
[0022] Figure 6 It is a schematic diagram of the top cross-sectional structure of the cylinder of the utility model.
[0023] In the figure: 1. base; 2. slide; 3. limit assembly; 301. connection box; 302. partition; 303. electric push rod; 304. limit rod; 305. slide hole; 4. adjustment assembly; 401. bidirectional screw; 402. servo motor; 5. column; 6. mounting groove; 7. transmitter body; 8. receiver body; 9. cylinder; 10. drive motor; 11. transmission plate; 12. barrier block; 13. through hole; 14. inferior arc groove; 15. positioning frame; 16. protective shell; 17. connection plate; 18. heat dissipation groove; 19. mounting plate; 20. slider. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-6 The utility model provides a protective device for a safety light curtain, including a base 1, a slide groove 2 is provided at the top of the base 1, two sliders 20 are slidably connected to the inner wall of the slide groove 2, columns 5 are fixedly provided at the tops of the two sliders 20, mounting grooves 6 are provided on the surfaces of the two columns 5, a transmitter body 7 is fixedly provided on the inner wall of one mounting groove 6, a receiver body 8 is fixedly provided on the inner wall of the other mounting groove 6, cylinders 9 are fixedly provided at one end of the two columns 5, driving motors 10 are fixedly provided on the inner walls of the two cylinders 9, transmission plates 11 are fixedly provided on the transmission shafts of the two driving motors 10, blocking blocks 12 are fixedly provided on one side of the two transmission plates 11, two limit assemblies 3 are provided at the top of the base 1, an adjusting assembly 4 is provided on one side of the base 1, the mounting groove 6 is used to accommodate the transmitter body 7 or the receiver body 8, and the blocking block 12 will cover the mounting groove 6, thereby protecting the transmitter body 7 or the receiver body 8.
[0026] The inner surfaces of the two blocking blocks 12 are respectively slidably connected to the surfaces of the two columns 5. Through holes 13 are provided on the surfaces of the two blocking blocks 12. The two driving motors 10 are both forward and reverse reduction motors. The rotation directions of the two driving motors 10 are opposite. The two driving motors 10 drive the two transmission plates 11 to rotate. There is no need to manually rotate the transmission plates 11, which saves time and effort.
[0027] The surfaces of the two cylinders 9 are provided with minor arc grooves 14 that slide with the surface of the transmission plate 11. The surfaces of the two cylinders 9 are respectively slidably connected to the inner surfaces of the two blocking blocks 12. The minor arc grooves 14 guide the rotation of the transmission plate 11, thereby improving the stability of the transmission plate 11 in the vertical direction. The blocking blocks 12 can rotate along the surface of the cylinder 9 with the column 5 as the center.
[0028] The two limit assemblies 3 both include a connecting box 301, which are respectively fixed at one end of the two cylinders 9, and the inner walls of the two connecting boxes 301 are fixed with partitions 302. Electric push rods 303 are fixed between the two connecting boxes 301 and the corresponding partitions 302. The telescopic ends of the two electric push rods 303 are fixed with limit rods 304 that slide with the through holes 13. When the electric push rods 303 are started, the telescopic ends of the electric push rods 303 will extend and push the limit rods 304 to move, and the limit rods 304 will slide into the through holes 13 on the surface of the blocking block 12. At this time, the limit rods 304 will not separate from the sliding holes 305, thereby limiting the blocking block 12, preventing the blocking block 12 from rotating along the surface of the column 5 due to a strong external force impact, thereby improving the stability of the blocking block 12 and reducing the load on the drive shaft of the drive motor 10 when the blocking block 12 is subjected to an external force impact.
[0029] The surfaces of the two connection boxes 301 are respectively slidably connected to the inner surfaces of the two blocking blocks 12. The surfaces of the two connection boxes 301 are provided with sliding holes 305 that slide with the surface of the limit rod 304. The sliding holes 305 guide the movement of the limit rod 304 to reduce the radial load on the telescopic end of the electric push rod 303.
[0030] The adjustment component 4 includes a bidirectional screw rod 401 and a servo motor 402. The bidirectional screw rod 401 is rotatably arranged on the inner wall of the slide groove 2 through a bearing. The contact parts of the bidirectional screw rod 401 and the two sliders 20 are threadedly connected through a screw nut. The servo motor 402 is fixedly arranged on one side of the base 1. The servo motor 402 is a forward and reverse motor. The transmission shaft of the servo motor 402 is fixedly connected to one end of the bidirectional screw rod 401 through a coupling. When the servo motor 402 is started, the servo motor 402 drives the bidirectional screw rod 401 to rotate, and the bidirectional screw rod 401 will drive the two sliders 20 to move. The moving directions of the two sliders 20 are opposite. The two sliders 20 will drive the two columns 5 to move, thereby shortening the distance between the transmitter body 7 and the receiver body 8.
[0031] A positioning frame 15 is fixedly provided on one side of the base 1, and a protective shell 16 is slidably connected to the surface of the positioning frame 15. The protective shell 16 and the positioning frame 15 are both mounted on the outside of the servo motor 402. Connecting plates 17 are fixedly provided on both sides of the base 1. Two connecting holes are provided on the surfaces of the two connecting plates 17. The protective shell 16 protects the servo motor 402. When installing the protective shell 16, the protective shell 16 is slid along the surface of the positioning frame 15 so that the protective shell 16 is supported by one side of the base 1 to complete the positioning of the protective shell 16. The positioning frame 15 improves the installation efficiency of the protective shell 16.
[0032] One side of the protective shell 16 is slidably connected to one side of the base 1, and heat dissipation grooves 18 are provided on the front and back of the protective shell 16. The inner walls of the two heat dissipation grooves 18 are fixed with dustproof nets, and the front and back of the protective shell 16 are fixed with mounting plates 19. The two mounting plates 19 are fixedly connected to one side of the base 1 by screws. The heat dissipation grooves 18 facilitate contact between external gas and the servo motor 402, which is beneficial to the heat dissipation of the servo motor 402. The protective shell 16 is fixed by the mounting plates 19 and screws.
[0033] When in use, close the transmitter body 7 and the receiver body 8, and start the two drive motors 10. The two drive motors 10 rotate in opposite directions. The two drive motors 10 drive the two transmission plates 11 to rotate a certain angle. Specifically, one of the transmission plates 11 rotates 90° clockwise, and the other transmission plate 11 rotates 90° counterclockwise. The two transmission plates 11 drive the two blocking blocks 12 to rotate. The two blocking blocks 12 slide along the surfaces of the corresponding columns 5 until the two blocking blocks 12 cover the two mounting grooves 6, thereby protecting the transmitter body 7 and the receiver body 8. Compared with the prior art, there is no need to manually overcome resistance and do work, and there is no need to pull the two magnets in sequence, which saves time and effort.
[0034] Furthermore, after the blocking block 12 stops rotating, the through hole 13 is aligned with the sliding hole 305, and the electric push rod 303 is started. The telescopic end of the electric push rod 303 will extend and push the limiting rod 304 to move, and the limiting rod 304 will slide into the through hole 13 on the surface of the blocking block 12. At this time, the limiting rod 304 will not separate from the sliding hole 305, thereby limiting the blocking block 12 and preventing the blocking block 12 from rotating along the surface of the column 5 due to a strong external force impact, thereby improving the stability of the blocking block 12 and ensuring the protective effect of the blocking block 12.
[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A protective device for a safety light curtain, comprising a base (1), characterized in that: The top of the base (1) is provided with a slide groove (2), the inner wall of the slide groove (2) is slidably connected with two sliders (20), the tops of the two sliders (20) are provided with columns (5), the surfaces of the two columns (5) are provided with mounting grooves (6), the inner wall of one of the mounting grooves (6) is provided with a transmitter body (7), the inner wall of the other mounting groove (6) is provided with a receiver body (8), one end of the two columns (5) is provided with a cylinder (9), the inner walls of the two cylinders (9) are provided with a driving motor (10), the transmission shafts of the two driving motors (10) are provided with a transmission plate (11), and one side of the two transmission plates (11) is provided with a blocking block (12), the top of the base (1) is provided with two limit assemblies (3), and one side of the base (1) is provided with an adjustment assembly (4).
2. A safety light curtain protection device according to claim 1, characterized in that: The inner surfaces of the two blocking blocks (12) are respectively slidably connected to the surfaces of the two pillars (5), the surfaces of the two blocking blocks (12) are both provided with through holes (13), and the two driving motors (10) are both forward and reverse reduction motors.
3. The protective device of a safety light curtain according to claim 1, characterized in that: The surfaces of the two cylinders (9) are provided with inferior arc grooves (14) that slide with the surface of the transmission plate (11), and the surfaces of the two cylinders (9) are respectively slidably connected with the inner surfaces of the two blocking blocks (12).
4. A safety light curtain protection device according to claim 2, characterized in that: The two limit assemblies (3) each comprise a connection box (301), the two connection boxes (301) being respectively arranged at one end of the two cylinders (9), the inner walls of the two connection boxes (301) being provided with a partition (302), an electric push rod (303) being provided between the two connection boxes (301) and the corresponding partition (302), and a limit rod (304) sliding with the through hole (13) being provided at the telescopic end of the two electric push rods (303).
5. A safety light curtain protection device according to claim 4, characterized in that: The surfaces of the two connection boxes (301) are respectively slidably connected to the inner surfaces of the two blocking blocks (12), and the surfaces of the two connection boxes (301) are provided with sliding holes (305) that slide with the surface of the limiting rod (304).
6. The protective device of a safety light curtain according to claim 1, characterized in that: The adjustment assembly (4) comprises a bidirectional screw (401) and a servo motor (402); the bidirectional screw (401) is rotatably arranged on the inner wall of the slide groove (2) via a bearing; the contact parts of the bidirectional screw (401) and the two sliders (20) are threadedly connected via screw nuts; the servo motor (402) is arranged on one side of the base (1); the servo motor (402) is a forward and reverse motor; and the transmission shaft of the servo motor (402) is connected to one end of the bidirectional screw (401) via a coupling.
7. A safety light curtain protection device according to claim 6, characterized in that: A positioning frame (15) is provided on one side of the base (1), and a protective shell (16) is slidably connected to the surface of the positioning frame (15). The protective shell (16) and the positioning frame (15) are both sleeved on the outside of the servo motor (402). Connecting plates (17) are provided on both sides of the base (1), and two connecting holes are provided on the surfaces of the two connecting plates (17).
8. The protective device of a safety light curtain according to claim 7, characterized in that: One side of the protective shell (16) is slidably connected to one side of the base (1); the front and back sides of the protective shell (16) are provided with heat dissipation grooves (18); the inner walls of the two heat dissipation grooves (18) are provided with dustproof nets; the front and back sides of the protective shell (16) are provided with mounting plates (19); the two mounting plates (19) are connected to one side of the base (1) by screws.