Conveying device facilitating cleaning of household textiles

Through the design of the home textile conveyor device, the use of forward conveyor belt, guide frame, fan, video camera and fill light components, the automatic stacking and cleaning of textiles is realized, solving the problem of low manual disassembly and cleaning efficiency in the existing technology, and improving the efficiency and effect of product quality inspection.

CN120246382AInactive Publication Date: 2025-07-04TAICANG CHUANGXIANG TEXTILE TECH CO LTD
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Patent Information

Application Number
CN202510424789.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-07
Publication Date
2025-07-04
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When the existing textile conveyor device conveys folded and molded textiles, it requires manual disassembly to conduct random inspections, and cannot be cleaned quickly, which affects the normal conveying and quality inspection of the product.

Method used

A household textile conveyor device was designed, using two forward conveyor belts, guide frames, fans, cameras and fill lights to realize automatic stacking and cleaning. Through real-time camera detection, fan cleaning, fill lights lighting, and electric push rods to adjust the frame position to achieve non-destructive testing and efficient cleaning.

Benefits of technology

It realizes automatic stacking and cleaning of textiles, improves the efficiency and effect of product quality inspection, and avoids the limitations of manual operation.

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Abstract

The invention provides a household textile conveying device convenient to clean, and relates to the technical field of textile conveying, the household textile conveying device convenient to clean comprises a base, a main body of the base is of a frame structure, two conveying belts are mounted in the base, and the two conveying belts are mounted on the inner side of the base in a linear array; the two conveying belts are arranged on the base, conveying is controlled through a driver, the two conveying belts conduct forward conveying, the rear side of the base is fixedly connected with a guide frame, a longitudinal groove is formed in the guide frame, and the longitudinal groove formed in the guide frame is used for sliding of the platen. The problem that in the prior art, conveyed textiles such as high-end sportswear fabric cannot be rapidly cleaned in the conveying process, and then limitation exists is solved, every two longitudinally adjacent sliding blocks draw close to each other to support connecting rods and limiting bases, the expanded gap of the high-end sportswear fabric can be remarkably enlarged, and the conveying efficiency of the high-end sportswear fabric is improved. And therefore, the purpose of more conveniently observing and cleaning by a user is achieved.
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Description

Technical Field

[0001] The present invention relates to the technical field of textile conveying, and particularly relates to a conveying device for facilitating the cleaning of household textiles. Background Art

[0002] Textiles, that is, products processed by textile processing, including yarns, woven fabrics, knitted fabrics, braided fabrics, etc. After the sewing process is completed, for example, when high-end sports fabrics are packaged, folding and conveying work needs to be carried out. When spot-checking is required during the conveying process of textiles in a folded state, it is necessary for workers to manually unfold the folds of the textiles before detection can be carried out.

[0003] However, for the current conveying devices, when conveying the folded textiles, in most cases, it is necessary for workers to manually disassemble the folded textiles before spot-checking operations can be carried out. However, it is difficult for manual disassembly and folding to meet the folding standards of machine automation, which will affect the normal conveying work of the products, and during the conveying process, it is impossible to quickly clean the textiles such as high-end sports fabrics being conveyed, thus having limitations. Summary of the Invention

[0004] The present invention provides a conveying device for facilitating the cleaning of household textiles, specifically including: a base, the main body of the base is a frame structure, and a conveyor belt is installed inside the base. There are two conveyor belts in total, and the two conveyor belts are installed in a linear array on the inner side of the base, and both conveyor belts are controlled for conveying by a driver. The two conveyor belts convey in the same direction. A guide frame is fixedly connected to the rear side of the base. A longitudinal groove is opened inside the guide frame, and the longitudinal groove opened in the guide frame is used for the sliding of a platen.

[0005] Optionally, a pressing plate is fixedly connected to the top surface of the guide frame. The pressing plate is located directly above the platen, and the guide frame, the pressing plate and the platen together form a limiting structure for the textiles. A support is fixedly connected to the front end of the base. A longitudinal groove is opened inside the longitudinal member of the support, and an electric push rod A is installed inside the longitudinal groove of the support.

[0006] Optionally, a blower is fixedly connected to the outside of the guide frame. There are two blowers in total, and the two blowers are respectively fixedly connected to the left and right side surfaces of the guide frame, and both blowers are used for cleaning the textiles. The base and the guide frame together form a bearing structure for the blowers.

[0007] Optionally, a transverse groove is opened inside the guide frame, and a motor C is installed at the rear side of the guide frame. A gear is installed at the front end of the motor C. The motor C is used to drive the gear to rotate. A frame body is slidably connected inside the transverse groove opened in the guide frame. A rack is fixedly connected to the rear side of the frame body. The rack is matched with the gear. A proximity switch is installed at the front end of the frame body.

[0008] Optionally, longitudinal grooves are formed inside the platen, a spring plate is embedded inside the longitudinal grooves formed at the top end of the platen, a pressure sensor is installed between the spring plate and the platen, the pressure sensor installed in the platen is electrically connected to motor A, a guide wheel A is installed at the top end of the spring plate, and guide wheel A is used for guiding textiles.

[0009] Optionally, the proximity switch installed at the front end of the frame body is electrically connected to the electromagnetic rod, cameras are installed at both the top end and the bottom end of the frame body, the cameras are used for spot-checking textiles, fill lights are installed at both the top end and the bottom end of the frame body, the fill lights are used for assisting the cameras in taking pictures, sliders are slidably connected to both the top end and the bottom end of the frame body, the sliders are connected to the frame body through the electromagnetic rod, when the proximity switch is in the on state, the electromagnetic rod is in the state of pushing the sliders to pop out, a connecting rod is hinged to the top end of the slider, a limit seat is installed inside the connecting rod, and a guide wheel B is installed at the top end of the limit seat.

[0010] Optionally, a support seat is installed at the top end of the electric push rod A, mounting brackets are installed on both the left and right sides of the support seat, the mounting brackets are slidably connected to the outer side of the bracket, and a motor B is installed on the outer side of the support seat, motor B is used for adjusting the orientation of the support seat, an electric push rod B is fixedly connected to the front end of the support seat, there are two electric push rods B in total, and a guide frame is installed at the front ends of the two electric push rods B.

[0011] Optionally, a motor A is installed inside the longitudinal groove formed in the guide frame, a screw rod is installed at the top end of the motor A, motor A is used for driving the screw rod to rotate, a platen is slidably connected to the inside of the longitudinal groove formed in the guide frame, and a screw hole matching the screw rod is formed inside the platen.

[0012] Beneficial effects According to the conveying device of the embodiment of the present invention, compared with the traditional one, it drives the two frame bodies to displace along the transverse groove formed in the guide frame through the meshing of the gear and the rack fixedly connected to the rear side of the frame body. When the frame body is displaced, the movement of the frame body can be made smoother by the contact between the guide wheel B installed at the top end of the limit seat and the high-end sports fabric. When the frame body is displaced inside the gap of the high-end sports fabric, the fill light arranged inside the frame body can illuminate the inside of the gap of the high-end sports fabric, and the camera installed in the frame body can be used to perform real-time shooting operations on the inside of the high-end sports fabric. Through the shooting of the camera, not only can the inside of the high-end sports fabric be detected in real time without damaging the folded high-end sports fabric, but also the quality of the product can be improved through the omnidirectional observation of the camera, avoiding the problems that manual inspection will have defects and affect the already folded and formed textiles.

[0013] In addition, in the present invention, the height of the support seat slidably connected to the inner side of the bracket through the mounting frame can be adjusted by starting the electric push rod A installed in the bracket, so that the support seat can be placed directly in front of the high-end sports fabric, and then the electric push rod B installed on the rear side of the support seat can be started to push the frame backward and insert it into the folded high-end sports fabric for placement. At this time, the frame can be inserted into the high-end sports fabric to prop up the high-end sports fabric, and then the fans installed on the left and right sides of the guide frame can be started to efficiently clean the dust and other debris inside the high-end sports fabric through the gaps supported by the high-end sports fabric, thereby achieving the purpose of improving product quality.

[0014] In addition, in the present invention, after the high-end sports fabric is cleaned, the guide frame can be further pushed to the rear side by the electric push rod B, and the proximity switch installed on the rear side of the frame body that is slidably connected in the guide frame can be contacted with the fan to release the power to the electromagnetic rod installed in the frame body to release the magnetic limit, and the slider slidably connected in the frame body can be pushed outward by the electromagnetic rod, and the connecting rod and the limit seat can be supported by the approach of every two longitudinally adjacent sliders, so that the expanded gap of the high-end sports fabric can be significantly increased, thereby achieving the purpose of making it more convenient for users to observe and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0016] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture: Figure 1 A schematic diagram showing a front side view of a conveying device according to an embodiment of the present invention in which part of the structure is disassembled and half-sectioned; Figure 2 A schematic diagram showing a top and side view of a conveying device according to an embodiment of the present invention in which part of the structure is disassembled and half-cut; Figure 3 A schematic diagram showing an assembly structure of a conveying device according to an embodiment of the present invention; Figure 4 A schematic diagram showing a base to pressure plate display structure of a conveying device according to an embodiment of the present invention is shown; Figure 5 A schematic diagram showing a display structure of a support to an electric push rod B of a conveying device according to an embodiment of the present invention is shown; Figure 6 A schematic diagram showing a display structure of a frame to a guide wheel B of a conveying device according to an embodiment of the present invention is shown; Figure 7 shows the Figure 2 schematic diagram of the enlarged structure at position A in Figure 8 shows the Figure 2 schematic diagram of the enlarged structure at position B in List of Reference Numerals 1. Base; 2. Conveyor Belt; 3. Guide Frame; 4. Motor A; 5. Screw; 6. Table Plate; 7. Spring Plate; 8. Guide Wheel A; 9. Fan; 10. Pressing Plate; 11. Bracket; 12. Electric Push Rod A; 13. Mounting Frame; 14. Motor B; 15. Support Seat; 16. Electric Push Rod B; 17. Guide Frame; 18. Motor C; 19. Gear; 20. Frame Body; 21. Proximity Switch; 22. Rack; 23. Camera; 24. Fill Light; 25. Slide Block; 26. Electromagnetic Rod; 27. Link Rod; 28. Limit Seat; 29. Guide Wheel B. Detailed Description of the Invention

[0018] In order to make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0019] Embodiment: Please refer to Figures 1 to 8 : The present invention provides a conveying device for facilitating the cleaning of household textiles, including: a base 1, the main body of the base 1 is a frame structure, and a conveyor belt 2 is installed inside the base 1. There are two conveyor belts 2 in total, and the two conveyor belts 2 are installed in a linear array on the inner side of the base 1, and both conveyor belts 2 are controlled for conveying by a driver. The two conveyor belts 2 convey in the same direction. A guide frame 3 is fixedly connected to the rear side of the base 1. A longitudinal groove is opened inside the guide frame 3, and the longitudinal groove opened in the guide frame 3 is used for the sliding of the table plate 6. The proximity switch 21 installed at the front end of the frame body 20 is electrically connected to the electromagnetic rod 26. Cameras 23 are installed at the top and bottom of the frame body 20, and the cameras 23 are used for spot-checking textiles. Fill lights 24 are installed at the top and bottom of the frame body 20, and the fill lights 24 are used to assist the cameras 23 in taking pictures. Slide blocks 25 are slidably connected to the top and bottom of the frame body 20, and the slide blocks 25 are connected to the frame body 20 through electromagnetic rods 26. When the proximity switch 21 is in the on state, the electromagnetic rod 26 is in the state of pushing the slide block 25 to pop out. A link rod 27 is hinged to the top of the slide block 25, a limit seat 28 is installed inside the link rod 27, and a guide wheel B29 is installed at the top of the limit seat 28.

[0020] In addition, according to the embodiments of the present invention, as Figures 1 - 3As shown in the figure, a motor A4 is installed inside the longitudinal groove formed in the guide frame 3. A screw rod 5 is installed at the top of the motor A4. The motor A4 is used to drive the screw rod 5 to rotate. A table board 6 is slidably connected inside the longitudinal groove formed in the guide frame 3. A screw hole matching the screw rod 5 is formed inside the table board 6. A longitudinal groove is formed inside the table board 6. A spring plate 7 is embedded inside the longitudinal groove formed at the top of the table board 6. A pressure sensor is installed between the spring plate 7 and the table board 6. The pressure sensor installed in the table board 6 is electrically connected to the motor A4. A guide wheel A8 is installed at the top of the spring plate 7. The guide wheel A8 is used to guide the textile. The two frame bodies 20 are driven to displace along the transverse groove formed in the guide frame 17 through the engagement of the gear 19 and the rack 22 fixedly connected to the rear side of the frame body 20. When the frame body 20 is displaced, the movement of the frame body 20 can be made smoother through the contact between the guide wheel B29 installed at the top of the limit seat 28 and the high-end sports fabric. When the frame body 20 is displaced inside the gap of the high-end sports fabric, the inside of the gap of the high-end sports fabric can be illuminated through the supplementary light 24 arranged inside the frame body 20, and the situation inside the high-end sports fabric can be photographed in real time through the camera 23 installed in the frame body 20. Through the photographing of the camera 23, the situation inside the high-end sports fabric can be detected in real time without damaging the folded high-end sports fabric, and the quality of the product can be improved through the omnidirectional observation of the camera 23.

[0021] In addition, according to the embodiments of the present invention, as Figures 1 - 6 shown, a blower 9 is fixedly connected to the outside of the guide frame 3. There are two blowers 9 in total, and the two blowers 9 are respectively fixedly connected to the left and right side surfaces of the guide frame 3. Both blowers 9 are used to clean the textile. The base 1 and the guide frame 3 together form a bearing structure for the blower 9. A pressing plate 10 is fixedly connected to the top surface of the guide frame 3. The pressing plate 10 is located directly above the table board 6. The guide frame 3, the pressing plate 10 and the table board 6 together form a limiting structure for the textile. A bracket 11 is fixedly connected to the front end of the base 1. A longitudinal groove is formed inside the longitudinal member of the bracket 11. An electric push rod A12 is installed inside the longitudinal groove of the bracket 11. After the high-end sports fabric is cleaned, the guide frame 17 can be further pushed backward through the electric push rod B16, and the magnetic limit of the electromagnetic rod 26 installed in the frame body 20 can be released through the contact between the proximity switch 21 slidably connected to the rear side of the frame body 20 in the guide frame 17 and the blower 9. The electromagnetic rod 26 is used to push the slider 25 slidably connected to the frame body 20 outward, and the connecting rod 27 and the limit seat 28 are supported through the approach of every two longitudinally adjacent sliders 25, so that the gap in which the high-end sports fabric is expanded can be significantly increased, thereby achieving the purpose of being more convenient for the user to observe and clean.

[0022] In addition, according to an embodiment of the present invention, as Figures 1 - 8 shown, an installation frame 13 is installed at the top end of the electric push rod A12. Installation frames 13 are installed on both the left and right sides of the installation frame 13. The installation frame 13 is slidably connected to the outer side of the support frame 11, and a motor B14 is installed on the outer side of the installation frame 13. The motor B14 is used to adjust the orientation of the support seat 15. The front end of the support seat 15 is fixedly connected to an electric push rod B16. There are two electric push rods B16 in total, and the front ends of the two electric push rods B16 are installed with a guide frame 17. A transverse groove is opened inside the guide frame 17, and a motor C18 is installed at the rear side of the guide frame 17. A gear 19 is installed at the front end of the motor C18. The motor C18 is used to drive the gear 19 to rotate. A frame body 20 is slidably connected inside the transverse groove opened in the guide frame 17. A rack 22 is fixedly connected to the rear side of the frame body 20. The rack 22 is matched with the gear 19. A proximity switch 21 is installed at the front end of the frame body 20. The height of the support seat 15 slidably connected to the inner side of the support frame 11 through the installation frame 13 can be adjusted by starting the electric push rod A12 installed in the support frame 11, so that the support seat 15 can be placed directly in front of the high-end sports fabric. Then, by starting the electric push rod B16 installed at the rear side of the support seat 15, the frame body 20 can be pushed backward and inserted into the folded and formed high-end sports fabric for placement; At this time, the frame body 20 can be inserted into the high-end sports fabric to support the high-end sports fabric, and then the blowers 9 installed on both the left and right sides of the guide frame 3 can be started to efficiently clean the dust and other sundries inside the high-end sports fabric through the gaps propped up by the high-end sports fabric, thereby achieving the purpose of improving product quality.

[0023] Specific usage and functions of this embodiment: In the present invention, first, the folded and formed high-end sports fabric textiles are placed on the conveyor belt 2 installed in the base 1, and the conveyor belt 2 is driven by starting the driver installed inside the conveyor belt 2 to introduce the textiles onto the table board 6 located inside the two conveyor belts 2 for placement. When the textiles are located on the table board 6, the textiles can be guided by the guide wheel A8 installed at the top end of the spring plate 7 to be transferred from the conveyor belt 2 on the right side to the conveyor belt 2 on the left side for conveying, thereby achieving the purpose of automatically conveying the high-end sports fabric; When it is necessary to perform inspection operations on the textiles placed on the table board 6, the motor A4 installed in the guide frame 3 can be started to rotate and drive the screw rod 5, and through the transmission connection between the screw rod 5 and the table board 6, the table board 6 can be moved upward along the longitudinal groove opened in the guide frame 3, and the table board 6 can be brought closer to the pressing plate 10 fixedly connected to the top surface of the guide frame 3 to limit the folded and formed textiles; Then, the height of the support seat 15 slidably connected to the inner side of the support seat 11 through the mounting frame 13 can be adjusted by starting the electric push rod A12 installed in the support 11, so that the support seat 15 can be placed in front of the high-end sports fabric, and then the frame 20 can be pushed backward and inserted into the folded high-end sports fabric by starting the electric push rod B16 installed at the rear side of the support seat 15. At this time, the frame 20 can be inserted into the high-end sports fabric to prop up the high-end sports fabric, and then the fans 9 installed on the left and right sides of the guide frame 3 can be started to efficiently clean the dust and other debris inside the high-end sports fabric through the gaps supported by the high-end sports fabric, thereby achieving the purpose of improving product quality; And when the high-end sports fabric is cleaned, the guide frame 17 can be pushed to the rear side by the electric push rod B16, and the electromagnetic rod 26 installed in the frame 20 is de-energized by the proximity switch 21 installed on the rear side of the frame 20 slidably connected in the guide frame 17 and the contact with the fan 9 to release the magnetic limit, and the slider 25 slidably connected in the frame 20 is pushed outward by the electromagnetic rod 26, and the connecting rod 27 and the limit seat 28 are supported by the close proximity of each two longitudinally adjacent sliders 25, so that the gap of the high-end sports fabric can be significantly increased, thereby achieving the purpose of more convenient observation and cleaning for users; After the high-end sports fabric is propped up by the expansion of the connecting rod 27 and the limit seat 28, the gear 19 can be driven to rotate by starting the motor C18 installed on the rear side of the guide frame 17, and the two frames 20 are driven to move along the transverse grooves opened in the guide frame 17 through the meshing of the gear 19 and the rack 22 fixedly connected to the rear side of the frame 20. When the frame 20 moves, the guide wheel B29 installed on the top of the limit seat 28 can contact the high-end sports fabric to make the movement of the frame 20 smoother. When the frame 20 is displaced inside the gap of the high-end sports fabric, the inside of the gap of the high-end sports fabric can be illuminated by the fill light 24 arranged on the inner side of the frame 20, and the situation inside the high-end sports fabric can be photographed in real time by the camera 23 installed in the frame 20. The shooting of the camera 23 can not only detect the situation inside the high-end sports fabric in real time without damaging the folded high-end sports fabric, but also improve the quality of the product through the all-round observation of the camera 23.

[0024] Finally, it should be noted that when the present invention describes the positions of various components and their cooperation relationships, etc., usually one / a pair of components are taken as examples. However, those skilled in the art should understand that such positions, cooperation relationships, etc. are equally applicable to other components / other pairs of components.

[0025] The above description is only an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A conveying device for facilitating the cleaning of household textiles, characterized in that, Including: A base (1), the main body of the base (1) is a frame structure, and a conveyor belt (2) is installed inside the base (1). There are two conveyor belts (2) in total, and the two conveyor belts (2) are installed in a linear array at the inner side of the base (1). Moreover, both of the two conveyor belts (2) are controlled for conveying by a driver. The two conveyor belts (2) convey in the same direction. A guide frame (3) is fixedly connected to the rear side of the base (1). A longitudinal groove is opened inside the guide frame (3), and the longitudinal groove opened in the guide frame (3) is used for the sliding of a table board (6).

2. The conveying device for facilitating cleaning of a household textile according to claim 1, wherein: A motor A (4) is installed inside the longitudinal groove opened in the guide frame (3). A screw rod (5) is installed at the top end of the motor A (4). The motor A (4) is used to drive the screw rod (5) to rotate. A table board (6) is slidably connected inside the longitudinal groove opened in the guide frame (3). A screw hole matching the screw rod (5) is opened inside the table board (6).

3. The conveying device for facilitating cleaning of a household textile according to claim 2, characterized in that: A longitudinal groove is opened inside the table board (6). A spring plate (7) is embedded inside the longitudinal groove opened at the top end of the table board (6). A pressure sensor is installed between the spring plate (7) and the table board (6). The pressure sensor installed in the table board (6) is electrically connected to the motor A (4). A guide wheel A (8) is installed at the top end of the spring plate (7), and the guide wheel A (8) is used for guiding textiles.

4. The conveying device for facilitating cleaning of a household textile according to claim 1, wherein: Two blowers (9) are fixedly connected to the outer side of the guide frame (3). The two blowers (9) are respectively fixedly connected to the left and right side surfaces of the guide frame (3). Moreover, both of the two blowers (9) are used for cleaning textiles. The base (1) and the guide frame (3) together form a bearing structure for the blowers (9).

5. The conveying device for facilitating the cleaning of a household textile according to claim 4, wherein: A pressing plate (10) is fixedly connected to the top surface of the guide frame (3). The pressing plate (10) is located directly above the table board (6). Moreover, the guide frame (3), the pressing plate (10) and the table board (6) together form a limiting structure for textiles. A support (11) is fixedly connected to the front end of the base (1). A longitudinal groove is opened inside the longitudinal member of the support (11). An electric push rod A (12) is installed inside the longitudinal groove of the support (11).

6. The conveying device for facilitating the cleaning of a household textile as described in claim 5, wherein: An installation frame (13) is installed at the top end of the electric push rod A (12). Installation frames (13) are installed on both the left and right sides of the installation frame (13). The installation frame (13) is slidably connected to the outer side of the support (11). Moreover, a motor B (14) is installed on the outer side of the installation frame (13). The motor B (14) is used to adjust the orientation of a support seat (15). An electric push rod B (16) is fixedly connected to the front end of the support seat (15). There are two electric push rods B (16) in total, and a guide frame (17) is installed at the front ends of the two electric push rods B (16).

7. The conveying device for facilitating cleaning of a household textile according to claim 6, wherein: A transverse groove is formed inside the guiding frame (17), and a motor C (18) is installed at the rear side of the guiding frame (17). A gear (19) is installed at the front end of the motor C (18). The motor C (18) is used to drive the gear (19) to rotate. A frame body (20) is slidably connected inside the transverse groove formed in the guiding frame (17). A rack (22) is fixedly connected to the rear side of the frame body (20). The rack (22) is matched with the gear (19). A proximity switch (21) is installed at the front end of the frame body (20).

8. The conveying device for facilitating cleaning of a household textile according to claim 7, wherein: The proximity switch (21) installed at the front end of the frame body (20) is electrically connected to the electromagnetic rod (26). Cameras (23) are installed at both the top and bottom ends of the frame body (20). The cameras (23) are used for sampling inspection of textiles. Fill lights (24) are installed at both the top and bottom ends of the frame body (20). The fill lights (24) are used to assist the cameras (23) in taking pictures. Sliders (25) are slidably connected to both the top and bottom ends of the frame body (20). The sliders (25) are connected to the frame body (20) through the electromagnetic rods (26). When the proximity switch (21) is in the on state, the electromagnetic rod (26) is in the state of pushing the slider (25) to pop out. A connecting rod (27) is hinged to the top end of the slider (25). A limit seat (28) is installed inside the connecting rod (27). A guide wheel B (29) is installed at the top end of the limit seat (28).