Dough plate placing machine with defective product recognition function

Abstract

The invention relates to a dough plate placing machine with a defective product recognition function and a recognition method thereof, and belongs to the technical field of food processing machinery. The machine comprises a conveyor belt, an image acquisition device, a processing unit and an execution device. Dough images are captured through the image acquisition device, the processing unit recognizes bad dough through a deep learning algorithm, and the bad dough is automatically removed through the execution device. According to the scheme, the production efficiency and the product quality are improved, automatic detection of the dough quality and automatic rejection of defective products are realized, the recognition capability is enhanced, and an intelligent and automatic dough quality detection mode is provided.

Description

Technical Field

[0001] The present application relates to the field of food processing machinery, and in particular to a dough plating machine with a defective product identification function. Background Art

[0002] As an automated food processing equipment, the dough tray machine plays an important role in the modern food processing industry. It greatly improves production efficiency and reduces the burden of manual operation by automatically placing the dough on the baking tray, bringing significant economic benefits to food processing companies.

[0003] However, the dough plating machines in the prior art still have certain limitations in structure and function. Although they can complete basic dough plating tasks, they perform poorly in handling bad dough. Specifically, the dough plating machines currently on the market often cannot accurately identify dough with irregular shapes, different sizes or containing impurities during the plating process, resulting in these bad doughs being mixed into qualified products, seriously affecting the stability of product quality. In order to make up for this shortcoming, food processing companies usually need to arrange special personnel to screen and inspect the dough before and after plating, which not only increases additional labor costs, but also reduces overall production efficiency.

[0004] Therefore, the existing dough plate setting machine has obvious defects in automatically identifying and processing bad dough, which has become the main technical problem restricting its further development and promotion and application. In order to solve this problem, the food processing industry urgently needs a new type of dough plate setting machine with bad product identification function to achieve the goal of automatically removing bad dough during the setting process, thereby further improving production efficiency and product quality. Summary of the invention

[0005] In order to improve production efficiency and product quality, the present application provides a dough plating machine with a defective product identification function.

[0006] The present application provides a dough plate setting machine with a defective product identification function, which adopts the following technical solution: A dough tray machine with a defective product identification function, comprising: Conveyor belts; An image acquisition device is arranged above the conveyor belt and is used to acquire image information at the position of the conveyor belt below; A control device connected to the image acquisition device, used to receive image information transmitted by the image acquisition device, with a qualified dough image preset, to identify bad dough in the image information through the qualified dough image, and to output instructions after identifying the bad dough; The execution device is connected to the control device and is used to remove the bad dough on the conveyor belt according to the instruction of the control device.

[0007] By adopting the above technical solution, an image acquisition device is added to the dough plating machine. The image of the dough during the conveying process is collected by the image acquisition device and transmitted to the control device. The control device analyzes the image and determines whether the dough is good or bad. The bad dough is automatically removed by the execution device, thereby improving the stability of product quality, reducing labor costs and improving production efficiency.

[0008] Optionally, the conveyor belt is provided with an active roller, a driven roller and a movable roller, a base is provided below the active roller, a support seat is provided at one end of the base, a conveyor belt is provided on the support seat, the conveyor belt is extended along the length direction of the support seat, a platter for receiving dough is provided above the conveyor belt, the base and the support seat are arranged vertically, the active roller is arranged at the end of the base away from the support seat, the movable roller is arranged at the end of the base close to the support seat, the driven roller is located between the active roller and the movable roller, side plates are fixedly connected to both sides of the conveyor belt, the two side plates are arranged opposite to each other, connecting blocks are provided at both ends of the movable roller, the movable roller is rotatably connected to the connecting block, telescopic cylinders are provided on the outer sides of the side plates, the piston rods of the two telescopic cylinders are respectively fixedly connected to the two connecting blocks, and the conveyor belt is a stretchable telescopic conveyor belt.

[0009] By adopting the above technical solution, when the staff is arranging the dough on a plate, the conveyor belt and the conveyor belt are in working condition. Under the processing of the dough forming machine, the dough is arranged on the telescopic conveyor belt at intervals. The staff starts the telescopic cylinder, which drives the connecting block to move, thereby changing the position of the movable roller, and then changing the length of the telescopic conveyor belt, so that the dough falls into the plate at intervals, thereby realizing the dough arrangement processing.

[0010] Optionally, the image acquisition device is a high-definition camera.

[0011] By adopting the above technical solution, the high-definition camera can capture images with higher definition, so that the control device can more accurately determine whether the dough is defective. Optionally, the control device includes a controller and a display. The controller 31 analyzes the dough area in the image information and compares the dough area in the image information with the qualified dough image. If the dough area in the image information is different from the qualified dough image, the selected dough area is confirmed to be bad dough, and instructions are transmitted to the execution device 4. The display 32 is used to display the image information.

[0012] By adopting the above technical solutions, the deep learning algorithm can improve the recognition accuracy of good and defective dough products, and the display can allow staff to intuitively know which dough products are defective and where the defective products appear, making it easier to detect problems in a timely manner.

[0013] Optionally, the actuator includes an electric cylinder and a push plate. A flat plate is provided above the conveyor belt. The flat plate is horizontally arranged. A connecting plate is connected to one side of the flat plate. The connecting plate is vertically arranged. The electric cylinder is fixedly connected to the side of the connecting plate away from the flat plate. The piston rod of the electric cylinder passes through the connecting plate and is fixedly connected to the push plate. The push plate is extended along the length direction of the conveyor belt. The controller and the display are both arranged on the connecting plate.

[0014] By adopting the above technical solution, when it is necessary to clean up defective dough, the staff starts the electric cylinder, and the push plate will push the defective dough into the collection box under the action of the electric cylinder, thereby realizing automatic removal of defective dough.

[0015] Optionally, a collecting box is provided on a side of the base away from the display, and an inclined plate is provided between the collecting box and the telescopic conveyor belt, and the inclined plate is inclined to allow the dough to slide into the collecting box.

[0016] By adopting the above technical solution, defective dough can fall into the collection box through the inclined plate after being rejected, which is convenient for the staff to subsequently handle the defective dough.

[0017] The cam is provided with a toothed plate at one end, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate, and a toothed plate is provided at the bottom of the toothed plate,

[0018] By adopting the above technical solution, when the push plate cleans the defective dough, the gear will drive the bidirectional screw to rotate through the rack, so that the two push rods are close to each other, and the push rods push the limit plates close to each other, so that the telescopic block pops out of the push plate under the action of the tightening spring, thereby ejecting the defective dough and preventing the defective dough from sticking to the push plate.

[0019] Optionally, the flat plate is also connected to a reset member for resetting the telescopic block, the reset member includes a connecting rod and a reset cylinder, one end of the connecting rod is fixedly connected to the flat plate, and the other end is connected to the reset cylinder, the piston rod of the reset cylinder passes through the connecting rod and is fixedly connected to a reset plate, the reset plate is opposite to the through hole of the push plate, and is used to push the telescopic block, the end of the limit plate away from the through hole of the push plate is inclined toward one side of the telescopic block, and a guide slope is provided at the through hole of the push plate to facilitate the limit plate to enter the push plate.

[0020] By adopting the above technical solution, when the push plate needs to be reset, the staff starts the electric cylinder, and the gear will drive the bidirectional screw to rotate through the rack, so that the two push rods move away from each other, increasing the moving space for the limit plate, and then the staff starts the reset cylinder, which drives the reset plate to move, and under the structural design of the guide ramp, the limit plate can enter the push plate more smoothly, thereby improving the stability and efficiency of the mechanical operation.

[0021] In summary, the present application includes at least one of the following beneficial technical effects of a dough plate setting machine with a defective product identification function: 1. Through the cooperation of the image acquisition device and the processing unit, the automatic detection of dough quality is realized, and the accuracy and efficiency of the detection are improved; 2. The execution device can automatically remove bad dough, avoiding the tediousness and uncertainty of manual operation and improving production efficiency; 3. Use deep learning algorithms to analyze image information, enhancing the system's ability to recognize dough of different shapes, sizes and colors; 4. The display screen shows the bad dough and its location in real time, which is convenient for operators to understand and intervene in the problems in the production process in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the overall structure of a dough plate setting machine with a defective product recognition function.

[0023] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a dough plate setting machine with a defective product recognition function.

[0024] Figure 3 It is a partial structural schematic diagram highlighting the execution device.

[0025] Figure 4 It is a schematic diagram highlighting the structure inside the push plate.

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the push plate.

[0027] Explanation of reference numerals: 1. conveyor belt; 11. driving roller; 12. driven roller; 13. movable roller; 14. base; 15. support seat; 151. conveyor belt; 16. side plate; 17. telescopic cylinder; 18. connecting block; 19. collecting box; 191. inclined plate; 2. image acquisition device; 21. high-definition camera; 3. control device; 31. controller; 32. display; 4. actuator; 41. electric cylinder; 42. push plate ; 421, through hole; 422, telescopic block; 423, tightening spring; 424, limit plate; 425, abutment plate; 426, connecting spring; 427, gear; 4271, bidirectional screw; 4272, push rod; 428, connecting strip; 429, rack; 43, flat plate; 431, reset member; 4311, connecting rod; 4312, reset cylinder; 4313, reset plate; 4314, guide ramp; 44, connecting plate. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0029] The embodiment of the present application discloses a dough plating machine with a defective product identification function.

[0030] Reference Figure 1 and Figure 3 The dough plating machine with defective product identification function provided in the embodiment of the present application includes a conveyor belt 1, an image acquisition device 2, a control device 3 and an execution device 4. The conveyor belt 1 is used to transport dough. The image acquisition device 2 is arranged above the conveyor belt 1. The image acquisition device 2 can use an industrial camera to collect image information at the position of the conveyor belt below. The control device 3 is connected to the image acquisition device 2 and is used to receive image information transmitted by the image acquisition device 2. A qualified dough image is preset. The defective dough in the image information is identified by the qualified dough image. After the defective dough is identified, an instruction is output to the execution device 4. The execution device 4 is connected to the control device 3 and is used to remove the defective dough on the conveyor belt 1 according to the instruction of the control device 3.

[0031] Reference Figure 1 and Figure 2, the conveyor belt 1 is provided with an active roller 11, a driven roller 12 and a movable roller 13. The active roller 11 is driven by a motor to drive the movement of the conveyor belt 1. A base 14 is provided below the active roller 11. A support seat 15 is vertically provided at one end of the base 14. A conveyor belt 151 is horizontally provided on the support seat 15 to receive the dough dropped from the conveyor belt 1 and deliver it to the plate. The active roller 11 is provided at one end of the base 14 away from the support seat 15, the movable roller is provided at one end of the base 14 close to the support seat 15, and the driven roller 12 is located between the two, so that the conveyor belt 1 forms a conveying path, which facilitates the dough to fall onto the conveyor belt 151 in sequence. Side plates 16 are also fixedly connected to both sides of the conveyor belt 1 to ensure the stability of the conveyor belt 1 during operation. Both ends of the movable roller 13 are provided with connecting blocks 18, and are rotatably connected to the connecting blocks 18 through bearings. The outer sides of the side panels 16 are provided with telescopic cylinders 17, and the piston rods of the telescopic cylinders 17 are fixedly connected to the connecting blocks 18, so that the position of the movable roller 13 can be adjusted by the telescopic cylinders 17, thereby changing the length of the conveyor belt 1.

[0032] Reference Figure 1 and Figure 2 When the staff is arranging the dough on a plate, the conveyor belt 1 and the conveyor belt 151 are both in working condition. Under the processing of the dough forming machine, the dough is arranged on the telescopic conveyor belt 1 at intervals. The staff starts the telescopic cylinder 17, and the telescopic cylinder 17 drives the connecting block 18 to move, thereby changing the position of the movable roller 13, and then changing the length of the telescopic conveyor belt 1, so that the dough falls into the plate at intervals, thereby realizing the dough arranging processing.

[0033] Reference Figure 1 and Figure 2 A collecting box 19 is provided on the side of the base 14 away from the display 32, and an inclined plate 191 is provided between the collecting box 19 and the telescopic conveyor belt 1. The inclined plate 191 is inclined for the dough to slide into the collecting box 19. After being rejected, the defective dough can fall into the collecting box 19 through the inclined plate 191, which is convenient for the staff to handle the defective dough later.

[0034] Reference Figure 1 and Figure 3 The image acquisition device 2 uses a high-definition camera 21, which is vertically arranged just above the conveyor belt 1 to capture a high-definition image of the dough. The high-definition camera 21 can capture a higher-definition image, so that the control device 3 can more accurately determine whether the dough is defective.

[0035] Reference Figure 1 and Figure 3The control device 3 includes a controller 31 and a display 32. The controller 31 analyzes the dough area in the image information and compares the dough area in the image information with the qualified dough image. If the dough area in the image information is different from the qualified dough image, the selected dough area is confirmed to be bad dough, and an instruction is transmitted to the execution device 4. The display 32 is used to display the image information.

[0036] Reference Figure 3 and Figure 4 The actuator 4 includes an electric cylinder 41 and a push plate 42. A flat plate 43 is horizontally arranged above the conveyor belt 1. One side of the flat plate 43 is fixedly connected to the electric cylinder 41 through a connecting plate 44. The piston rod of the electric cylinder 41 passes through the connecting plate 44 and is fixedly connected to the push plate 42, so that the push plate 42 can move along the length direction of the conveyor belt 1 under the action of the electric cylinder 41. The controller 31 controls the action of the electric cylinder 41 according to the instructions of the processing unit to drive the push plate 42 to remove the identified bad dough from the conveyor belt 1.

[0037] Reference Figure 1 and Figure 3 When the dough is transported on the conveyor belt 1, the high-definition camera 21 captures the image of the dough and transmits it to the processing unit of the controller 31. The processing unit analyzes the image through a deep learning algorithm and determines good and bad products. Once a bad product is identified, the controller 31 sends a command to the electric cylinder 41, thereby starting the electric cylinder 41. The push plate 42 will push the bad product into the collection box 19 under the action of the electric cylinder 41, so as to automatically remove the bad dough.

[0038] Reference Figure 1 and Figure 3A through hole 421 is provided on the side of the push plate 42 close to the collection box 19. The push plate 42 is a hollow cavity. A telescopic block 422 is provided in the push plate 42. A tightening spring 423 is connected to the side of the telescopic block 422 away from the through hole 421. One end of the tightening spring 423 is fixedly connected to the inner wall of the push plate 42, and the other end is fixedly connected to the telescopic block 422. Limiting plates 424 are provided on both sides of the telescopic block 422. One end of the limiting plate 424 close to the through hole 421 is connected to an abutting plate 425. The abutting plate 425 is arranged parallel to the push plate 42. The two limiting plates 424 are relatively arranged on both sides of the telescopic block 422. A connecting rod 424 is connected between the telescopic block 422 and the limiting plate 424. Spring 426, a sliding hole is provided at the top of the push plate 42, a gear 427 is connected to the sliding hole of the push plate 42, a connecting strip 428 is provided on the side of the flat plate 43 close to the collecting box 19, the connecting strip 428 is extended along the width direction of the flat plate 43, a rack 429 is provided on the lower end face of the connecting strip 428, the gear 427 is meshed with the rack 429, a bidirectional screw 4271 is provided in the push plate 42, the bidirectional screw 4271 is coaxially fixedly connected with the gear 427, both ends of the bidirectional screw 4271 are threadedly connected with a push rod 4272 for pushing the limit plate 424, and the end of the push rod 4272 away from the bidirectional screw 4271 is movably connected to the limit plate 424.

[0039] Reference Figure 4 and Figure 5 When the push plate 42 is cleaning bad dough, the gear 427 drives the bidirectional screw 4271 to rotate under the action of the rack 429, so that the two push rods 4272 are close to or away from each other. When the push rods 4272 are close to each other, they push the limit plate 424 to compress the connecting spring 426, and the telescopic block 422 is ejected from the through hole 421 under the action of the tightening spring 423 to eject the dough. The flat plate 43 is also provided with a reset member 431 for resetting the telescopic block 422, including a connecting rod 4311 and a reset cylinder 4312. The piston rod of the reset cylinder 4312 passes through the connecting rod 4311 and is fixed with a reset plate 4313, which is used to push the telescopic block 422 back into the push plate 42 when it is reset.

[0040] Reference Figure 4 and Figure 5The flat plate 43 is also connected to a reset member 431 for resetting the telescopic block 422. The reset member 431 includes a connecting rod 4311 and a reset cylinder 4312. One end of the connecting rod 4311 is fixedly connected to the flat plate 43, and the other end is connected to the reset cylinder 4312. The piston rod of the reset cylinder 4312 passes through the connecting rod 4311 and is fixedly connected to a reset plate 4313. The reset plate 4313 is directly opposite to the through hole 421 of the push plate 42 and is used to push the telescopic block 422. The end of the limit plate 424 away from the through hole 421 of the push plate 42 is tilted toward one side of the telescopic block 422. A guide slope 4314 is provided at the through hole 421 of the push plate 42 to facilitate the limit plate 424 to enter the push plate 42.

[0041] Reference Figure 4 and Figure 5 When the push plate 42 needs to be reset, the controller 31 sends a signal to start the electric cylinder 41, and the gear 427 drives the bidirectional screw 4271 to rotate through the rack 429, so that the two push rods 4272 move away from each other, thereby increasing the moving space for the limit plate 424, and then the controller 31 sends a signal to start the reset cylinder 4312, and the reset cylinder 4312 drives the reset plate 4313 to move, and under the structural design of the guide ramp 4314, the limit plate 424 enters the push plate 42 more smoothly, thereby improving the stability and efficiency of the mechanical operation.

[0042] The implementation principle of a dough plating machine with a defective product identification function in the embodiment of the present application is as follows: the dough image on the conveyor belt 1 is captured by the image acquisition device 2, and then transmitted to the control device 3 for processing and analysis. The control device 3 uses a deep learning algorithm to classify and identify the dough image, determine good products and defective products, and display the location and information of the defective products on the display 32. When a defective product is identified, the control device 3 sends an instruction to the execution device 4, and the electric cylinder 41 pushes the push plate 42 to push the defective product into the collection box 19 for removal. The whole process realizes the function of automatic detection and removal of defective dough, improving production efficiency and product quality.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dough plate setting machine with defective product identification function, characterized in that: include: Conveyor belt (1); An image acquisition device (2) is arranged above the conveyor belt (1) and is used to acquire image information at a position below the conveyor belt (1); A control device (3) is connected to the image acquisition device (2) and is used to receive image information transmitted by the image acquisition device (2), and is preset with a qualified dough image, and identifies bad dough in the image information through the qualified dough image, and outputs a command after identifying the bad dough; The execution device (4) is connected to the control device (3) and is used to remove bad dough on the conveyor belt (1) according to the instructions of the control device (3).

2. The dough plating machine with defective product identification function according to claim 1, characterized in that: The conveyor belt (1) is provided with an active roller (11), a driven roller (12) and a movable roller (13); a base (14) is provided below the active roller (11); a support seat (15) is provided at one end of the base (14); a conveyor belt (151) is provided on the support seat (15); the conveyor belt (151) is extended along the length direction of the support seat (15); a plate for receiving dough is provided above the conveyor belt (151); the base (14) and the support seat (15) are arranged vertically; the active roller (11) is arranged at one end of the base (14) away from the support seat (15); and the movable roller (13) is provided at one end of the base (14) away from the support seat (15). The driven roller (12) is arranged at one end of the base (14) close to the support seat (15), and the driven roller (12) is located between the driving roller (11) and the movable roller (13). Side plates (16) are fixedly connected to both sides of the conveyor belt (1), and the two side plates (16) are arranged opposite to each other. Connecting blocks (18) are provided at both ends of the movable roller (13), and the movable roller (13) is rotatably connected to the connecting blocks (18). Telescopic cylinders (17) are provided on the outer sides of the side plates (16), and the piston rods of the two telescopic cylinders (17) are fixedly connected to the two connecting blocks (18) respectively. The conveyor belt (1) is a stretchable telescopic conveyor belt (1).

3. The dough plating machine with defective product identification function according to claim 1, characterized in that: The image acquisition device (2) is a high-definition camera (21).

4. The dough plating machine with defective product identification function according to claim 1, characterized in that: The control device (3) comprises a controller (31) and a display (32). The controller (31) analyzes the dough area in the image information and compares the dough area in the image information with the qualified dough image. If the dough area in the image information is different from the qualified dough image, the selected dough area is confirmed to be bad dough and an instruction is transmitted to the execution device (4). The display (32) is used to display the image information.

5. The dough plating machine with defective product identification function according to claim 4, characterized in that: The actuator (4) comprises an electric cylinder (41) and a push plate (42). A flat plate (43) is provided above the conveyor belt (1). The flat plate (43) is arranged horizontally. A connecting plate (44) is connected to one side of the flat plate (43). The connecting plate (44) is arranged vertically. The electric cylinder (41) is fixedly connected to a side of the connecting plate (44) away from the flat plate (43). The piston rod of the electric cylinder (41) passes through the connecting plate (44) and is fixedly connected to the push plate (42). The push plate (42) is extended along the length direction of the conveyor belt (1). The controller (31) and the display (32) are both arranged on the connecting plate (44).

6. The dough plating machine with defective product identification function according to claim 2, characterized in that: A collecting box (19) is provided on the side of the base (14) away from the display (32), and an inclined plate (191) is provided between the collecting box (19) and the telescopic conveyor belt (1). The inclined plate (191) is inclined so as to allow the dough to slide into the collecting box (19).

7. The dough plating machine with defective product identification function according to claim 5, characterized in that: A through hole (421) is provided on one side of the push plate (42) close to the collection box (19); the push plate (42) is a hollow cavity; a telescopic block (422) is provided inside the push plate (42); a tightening spring (423) is connected to the side of the telescopic block (422) away from the through hole (421); one end of the tightening spring (423) is fixedly connected to the inner wall of the push plate (42); and the other end is fixedly connected to the telescopic block (422); limiting plates (424) are provided on both sides of the telescopic block (422); one end of the limiting plate (424) close to the through hole (421) is connected to an abutting plate (425); the abutting plate (425) is arranged parallel to the push plate (42); the two limiting plates (424) are arranged oppositely on the two sides of the telescopic block (422); a connecting rod (423) is connected between the telescopic block (422) and the limiting plate (424). A spring (426) is connected to the top of the push plate (42), a sliding hole is provided at the top of the push plate (42), a gear (427) is connected to the sliding hole of the push plate (42), a connecting strip (428) is provided on the side of the flat plate (43) close to the collecting box (19), the connecting strip (428) is extended along the width direction of the flat plate (43), a rack (429) is provided on the lower end surface of the connecting strip (428), the gear (427) is meshed with the rack (429), a bidirectional screw (4271) is provided in the push plate (42), the bidirectional screw (4271) is coaxially fixedly connected with the gear (427), both ends of the bidirectional screw (4271) are threadedly connected with a push rod (4272) for pushing the limit plate (424), and one end of the push rod (4272) away from the bidirectional screw (4271) is movably connected to the limit plate (424).

8. The dough plating machine with defective product identification function according to claim 7, characterized in that: The flat plate (43) is also connected to a reset member (431) for resetting the telescopic block (422). The reset member (431) includes a connecting rod (4311) and a reset cylinder (4312). One end of the connecting rod (4311) is fixedly connected to the flat plate (43), and the other end is connected to the reset cylinder (4312). The piston rod of the reset cylinder (4312) passes through the connecting rod (4311) and is fixedly connected to a reset plate (4313). The reset plate (4313) is directly opposite to the through hole (421) of the push plate (42) and is used to push the telescopic block (422). One end of the limit plate (424) away from the through hole (421) of the push plate (42) is tilted toward one side of the telescopic block (422). A guide inclined surface (4314) is provided at the through hole (421) of the push plate (42) to facilitate the limit plate (424) to enter the push plate (42).

Images