Valve plate material collecting mechanism

Abstract

The utility model discloses a valve plate material collecting mechanism for the automatic collection and stacking of valve plate workpieces, which mainly comprises a chute, an upright positioning plate, a guide rail and a push plate. The chute is L-shaped, with the upper half part being inclined and the lower half part being perpendicular to the horizontal plane. The upper half part of the chute is provided with a hollow slide plate and a limiting clamp plate, and the lower half part is connected with the guide rail and provided with an open-embedded push plate. The upright positioning plate is installed at the lower half part of the chute close to the turning position. The push plate is inclined forward, with a hollow stripe on the surface, and connected with a driving device through a piston rod at the rear. Two parallel guide rail clamping plates are arranged on the guide rail. The device solves the problem of deflection and jamming of the valve plate in the inclined chute transportation through the limiting clamp plate and the hollow structure, avoids the damage of the valve plate caused by stacking misplacement by using the guide rail clamping plate and the vertical stacking mode, prevents the discharge port from being blocked by the forward inclination and positioning of the push plate, realizes the automation of valve plate stacking, reduces the degree of manual participation, and improves the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical automation equipment, and specifically to a valve plate receiving mechanism for the automated collection and stacking of valve plate workpieces. Background Technology

[0002] Valve plate workpieces generally face efficiency and accuracy bottlenecks in the post-processing material handling stage. While current mainstream horizontal conveyor systems can achieve continuous transport, valve plates are prone to stacking misalignment due to inertial displacement or vibration when using conveyor belts or chain conveyors. This can cause thin valve plates to scratch each other, warp, or even get stuck in equipment gaps, resulting in damage. While inclined slide mechanisms utilize gravity to simplify the process, they lack dynamic limiting structures and are prone to jamming during sliding. Furthermore, both methods rely on manual inspection of the stacking status and secondary sorting, impacting work efficiency.

[0003] To address the above issues, Chinese Patent Publication No. CN221875760U provides an automatic material stacking and collection system for current transformer mounting base plates. This utility model includes a conveyor chute and a stacking device. After the workpiece enters the stacking device, a cylinder lifts the workpiece upwards, and after the cylinder resets, the workpiece is stacked on a limiting plate. Although this utility model solves the automation problem of stacking, its stacking method has low accuracy and is prone to stacking misalignment. It also does not provide a solution for jamming when sliding down an incline. Similarly, using a vertical stacking technique can easily lead to blockage at the push-out port due to improper valve plate transport during push-plate reset. Summary of the Invention

[0004] The primary objective of this invention is to automate the valve plate stacking process and provide solutions to problems such as stacking misalignment during horizontal conveying and jamming during chute transport.

[0005] The second objective of this invention is to cleverly utilize the tilting of the push plate and the adhesive effect between the plates to solve the problem of valve plates falling back and blocking the discharge port, thus affecting the material stacking process during vertical stacking.

[0006] This utility model is achieved through the following technical solution: a valve plate receiving mechanism, including a chute 11, an upright positioning plate 12, a guide rail 21, and a push plate 31. The chute 11 is L-shaped, with the upper half inclined and the lower half perpendicular to the horizontal plane, using gravity to guide the valve plate down. An upright positioning plate 12 is provided at the corner of the chute to forcibly change the direction of movement of the valve plate to a vertical state. The upright positioning plate 12 forms a vertical gap with the bottom bearing surface of the chute 11, reserving a channel for the valve plate. The lower end of the chute 11 is vertically connected to the starting end of the guide rail 21 to ensure that the valve plate slides down to the stacking station. An opening is provided on the bottom bearing surface of the lower end of the chute 11, and the push plate 31 is embedded in the opening to realize the precise transfer of the valve plate from the chute to the guide rail.

[0007] Preferably, the upright positioning plate 11 is installed parallel to the bottom bearing surface of the lower half of the slide groove, with its upper edge slightly higher than the corner of the slide groove. This ensures that the valve plate is constrained by the positioning plate and changes direction. The lower edge is parallel to the upper edge of the opening on the bottom bearing surface of the slide groove 11, leaving a channel for the valve plate to be pushed out and avoiding blockage.

[0008] Preferably, limiting clamps 13 are symmetrically arranged on the inner walls of both sides of the slide 11. The limiting clamps 13 are installed on the inner walls of both sides of the slide 11 and symmetrically clamp the valve plate to prevent unidirectional tilting caused by inertia or gravity during the sliding process, especially to avoid jamming of asymmetrical valve plates (such as L-shaped or with boss structures). The limiting clamps 13 are two symmetrical L-shaped quadrangular prisms, narrow at the top and wide at the bottom, forming an opening along the inclined surface to guide the valve plate to slide down in the center and fit against the bottom bearing surface of the slide 11.

[0009] Preferably, guide shafts 131 and threaded rods 132 are provided on the outer sides of the two limiting clamps 13. The guide shafts 131 and threaded rods 132 pass through holes on the side wall of the slide groove 11. A T-nut 133 is provided on the threaded shaft on the outer side of the side wall. The T-nut 133 is a cylindrical threaded sleeve with a groove on the sleeve. A clamping washer 134 is inserted into the groove and fastened to the side wall of the slide groove 11. The spacing between the limiting clamps is controlled by adjusting the T-nut 133 to adapt to valve plates of different sizes and to precisely constrain the sliding path of the valve plates, preventing out-of-tolerance workpieces from entering and causing equipment damage.

[0010] Preferably, a sliding plate 14 is mounted on the bottom bearing surface of the slide 11. The sliding plate 14 has several parallel strip-shaped hollow grooves. The hollow grooves reduce the contact area between the valve plate and the sliding plate, reduce the coefficient of friction, and prevent jamming. A slide photoelectric sensor 15 is installed above the bearing surface of the slide 11. The slide photoelectric sensor detects the valve plate's position in real time and accurately triggers the push plate action.

[0011] Preferably, the upper surface of the guide rail 21 is provided with two parallel and spaced guide rail clamps 22. The two clamps form a limiting channel, which forces the valve plates to stack in a straight line to avoid horizontal misalignment. The guide rail clamps 22 are connected to the guide rail 21 by fixing screws 23. A guide rail photoelectric sensor 24 is provided at the end of the guide rail 21 to monitor the degree of material stacking and realize automatic shutdown protection when the material is full.

[0012] Preferably, the push plate 31 is connected to the drive device 32, which provides a stable thrust and is fixed to the upper surface of the guide rail 21.

[0013] Preferably, the push plate 31 is tilted forward, forming an angle of 2-5° with the horizontal plane. The forward tilting design allows the valve plate to tilt slightly forward after being pushed out, preventing it from falling back and blocking the channel. In addition, the surface is provided with vertical hollow strips to eliminate negative pressure adsorption and prevent the valve plate from sticking to the push plate and affecting separation.

[0014] Preferably, the push plate 31 has two positioning positions: in the initial position, the push plate 31 is positioned at the opening below the slide groove 11, with its leading edge on the same plane as the bottom bearing surface of the slide groove 11; in the final position, the push plate 31 is pushed out from the starting end of the guide rail 21, with its leading edge on the same plane as the upright positioning plate 12. The initial position ensures that the valve plate falls smoothly into the working area of ​​the push plate; the final position ensures that the valve plate is completely pushed out of the slide groove range, avoiding residual jamming.

[0015] Preferably, a tray 41 connected by a T-shaped support arm 42 is provided below the guide rail 21. The tray collects spilled grinding fluid, lubricating oil and other liquids to keep the equipment clean, while the T-shaped support arm provides a stable load-bearing foundation.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: In the valve plate receiving mechanism of this utility model, after the valve plate slides down from the slide 11 to the bottom of the slide, the sensor triggers the push plate 31 to work, pushing the valve plate onto the guide rail 21 for stacking. Then the push plate 31 is reset, realizing the individual stacking of valve plate workpieces. The entire process is automated by setting sensors, avoiding damage and bending of the valve plate caused by stacking misalignment, reducing manual intervention, and improving work efficiency. At the same time, the design of the limiting clamp and the bottom friction reduction structure solves the problem of jamming when sliding down the inclined groove. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a side view of the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the slide and push plate structure.

[0020] Figure 4 This is a front view of the slide and push plate structure.

[0021] Figure 5 This is a schematic diagram of the guide rail section.

[0022] Figure 6 This is a schematic diagram of the push plate and drive device.

[0023] Figure 7 This is a schematic diagram of the pallet structure.

[0024] In the diagram: 11-slide groove, 12-upright positioning plate, 13-limiting clamping plate, 131-guide optical axis, 132-threaded rod, 133-T-nut, 134-pressure washer, 14-push plate, 15-slide groove photoelectric sensor, 21-guide rail, 22-guide rail clamping plate, 23-fixing screw, 24-guide rail photoelectric sensor, 31-push plate, 32-drive device, 41-pallet, 42-T-shaped support arm. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] Specific Implementation Example 1, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a valve plate receiving mechanism includes a chute 11, an upright positioning plate 12, a guide rail 21, and a push plate 31. A limiting clamp 13 is provided on the chute.

[0028] The slide 11 is L-shaped, with the upper half inclined and the lower half perpendicular to the horizontal plane. An upright positioning plate 12 is provided at the corner of the slide 11, and the upright positioning plate 12 forms a vertical gap with the bottom bearing surface of the slide 11. The lower end of the slide 11 is vertically connected to the starting end of the guide rail 21, and the two are connected by an L-shaped connector. An opening is provided on the bottom bearing surface of the lower end of the slide 11, and a push plate 31 is embedded in the opening.

[0029] like Figure 3 As shown, the slide 11 can be divided into upper and lower parts. The upper part includes a bottom bearing surface and side walls connected to both sides of the bottom bearing surface, which are inclined in the opposite direction to the extension direction of the guide rail, at an angle of 35-40 degrees to the horizontal plane. The lower part includes a bottom bearing surface, which is perpendicular to the horizontal plane and connected to the guide rail 21, and fixed to the starting end of the guide rail 21. A square opening is provided in the center below the bearing surface for embedding the push plate 31. The upright positioning plate 12 is connected to the lower part of the slide 11.

[0030] The upright positioning plate 12 is the same width as the bottom bearing surface of the slide chute. Two square plates are installed on its left and right sides, connecting it to both sides of the bearing surface. The width of the square plates is greater than the height of the upright positioning plate 12, ensuring sufficient clearance between the upright positioning plate 12 and the bottom bearing surface of the slide chute 11, and ensuring it is installed parallel to the bearing surface. The upper edge of the upright positioning plate 12 is slightly higher than the turning point of the slide chute 11, ensuring that when the valve plate passes through the upper part of the slide chute 11 and reaches the turning point, it is constrained by the upright positioning plate 12, changing its direction and entering the lower part of the slide chute 11 perpendicular to the horizontal plane, finally falling to the bottom of the slide chute 11. Simultaneously, the lower edge of the upright positioning plate 12 is higher than the upper edge of the bottom square opening on the bearing surface, providing a passage for the push plate to push out the valve plate.

[0031] like Figure 3-4 As shown, symmetrical limiting clamps 13 are arranged inside the two side walls of the slide 11. The two limiting clamps 13 are two symmetrical quadrangular prism-shaped workpieces. The workpieces fit the bottom bearing surface of the slide 11. The upper half is inclined, and the lower half is perpendicular to the horizontal plane as the slide 11 turns. The upper end of the limiting clamp 13 is narrower, forming an opening that faces upward along the inclined plane. The prism gradually widens as it goes down, and the opening narrows. The width no longer changes until the bottom of the workpiece.

[0032] Two limiting clamps 13 are symmetrically installed on the bottom bearing surface of the slide 11 and fixed to the two side walls. Two guide shafts 131 and one threaded rod 132 are symmetrically arranged on the outer sides of the upper half of the two limiting clamps 13, passing through holes in the side walls of the slide 11. The middle threaded shaft extends out of the side wall, and a T-nut 133 is provided on its outer side. This T-nut 133 is a cylindrical threaded sleeve that engages with the threaded rod 132 via threads. The sleeve has a groove and is fixed by two clamping washers 134.

[0033] By tightening the T-nut 133 and fixing its position on the shaft with the clamping washer 134, the position of the limiting clamping plate is controlled. This device allows adjustment of the distance between the two limiting clamping plates 13. This embodiment controls the size of the sliding valve plate, effectively preventing excessively large valve plates from getting mixed into the sample and damaging the stacking process and collection mechanism. Furthermore, this device controls the valve plate's slide from the center of the groove, preventing unidirectional tilting during the sliding process due to gravity, especially for asymmetrical valve plates (such as L-shaped or boss-shaped structures), thus avoiding jamming during the sliding process.

[0034] A detachable sliding plate 15 is provided on the upper bearing surface of the slide groove 11. Several parallel perforated grooves are provided on the sliding plate 15 along the direction of the slide groove. These perforated grooves reduce the friction at the bottom of the bearing surface of the slide groove, further preventing jamming when the valve plate slides downwards. Simultaneously, the sliding plate 15 is preferably made of nylon, which has excellent wear resistance and is more suitable for scenarios requiring repeated friction. It has an extremely low coefficient of friction, typically 0.1-0.3, which, combined with the striped friction-reducing structure, effectively reduces wear and extends service life. Furthermore, nylon has good chemical stability, remaining unaffected by weak alkalis, alcohols, hydrocarbons, and greases. Because the sliding plate 15 is detachable, it can be replaced promptly and conveniently if damaged.

[0035] The upper part of the slide 11 is connected to a square plate parallel to the bottom bearing surface, which is installed above both side walls. A circular hole is set in the center of the square plate for installing the slide photoelectric sensor 14. The core function of this photoelectric sensor is to accurately detect whether a single valve plate has slid to the bottom of the slide and is stably positioned in front of the push plate 31. When the sensor 14 confirms that the valve plate is in place, it sends a valid signal to the control system to trigger the pushing action of the push plate 31, preventing malfunctions that could cause jamming or damage if the valve plate is not in place or is not in the correct posture.

[0036] Specific embodiment two, such as Figure 1 , Figure 2 , Figure 5 As shown, a valve plate receiving mechanism includes a chute 11, an upright positioning plate 12, a guide rail 21, and a push plate 31. A guide rail clamp 22 is provided on the guide rail 21, and the starting end is connected to the lower half of the bearing surface of the chute 11.

[0037] like Figure 5 As shown, two guide rail clamps 22 are arranged in parallel on the guide rail 21. The starting ends of the two clamps are connected to the two sides of the square opening at the bottom of the slide groove 11 through the square connectors, leaving a passage for the push plate and valve plate to stack material. At the same time, it can constrain the valve plate to stack along the direction of the guide rail, preventing misaligned stacking or uncontrolled stacking.

[0038] The guide rail clamp 22 is fixed to the guide rail 21 by fixing screws 23 on its upper surface. Multiple elongated positioning holes are provided on the guide rail 21 along the material stacking direction for the fixing screws 23 to pass through. The distance between the two guide rail clamps is controlled by adjusting the position of the fixing screws 23 in the positioning holes to accommodate valve plates of different sizes. Between the two guide rail clamps 22, the upper surface of the guide rail 21 also features perforated stripes. These stripes constitute a friction-reducing structure. By reducing friction, the material stacking is less likely to get stuck or deviate from the guide rail.

[0039] A guide rail photoelectric sensor 24 is installed at the end of the guide rail 21 to monitor the degree of material accumulation on the guide rail 21. The guide rail photoelectric sensor 24 continuously monitors the end position of the stacking valve plate. When the distance between the valve plate stack queue and the sensor reaches a preset value, the sensor 24 sends a "full" signal. After receiving this signal, the control system will immediately stop the material supply upstream of the chute 11 and prohibit the drive device 32 from performing new pushing actions until the stack is removed and the sensor 24 detects an "empty" signal, thereby effectively preventing the risk of uncontrolled material accumulation, overflow, or even equipment damage, and realizing automated monitoring and safety protection throughout the entire process.

[0040] Specific embodiment three, such as Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, a valve plate receiving mechanism includes a chute 11, an upright positioning plate 12, a guide rail 21, a push plate 31, a tray 41, and a T-shaped support arm 42. The push plate 31 is connected to a drive device 32, which is fixed on the guide rail 21.

[0041] The front end of the drive unit 32 is connected to the rear end of the push plate 31 via a piston rod, and the body is fixed on the guide rail 21. Preferably, the drive unit is a double-acting pneumatic cylinder, specifically the SMCCDJ2B16-300 type. The core value of this preferred pneumatic drive lies in its fast response to match high-speed production cycles, zero pollution to ensure valve plate surface quality, lower cost compared to other drives (reducing overall equipment cost by 60%), ease of maintenance, and the ability for production line workers to replace parts independently.

[0042] After receiving the "valve plate in position" signal from the photoelectric sensor 14, the drive unit 32 pushes the push plate 31 horizontally forward along the guide rail 21 at a set speed (e.g., 150-300 mm / s). The leading edge of the push plate 31 pushes the valve plate located at the bottom opening of the slide groove 11. The stroke of the push plate 31 is set by the control system to ensure that its leading edge accurately reaches the final position coplanar with the upright positioning plate 12. At this position, the valve plate is completely pushed out of the slide groove 11 and slightly pushes the previous valve plate already on the guide rail 21, aligning it neatly along the guide rail. Subsequently, the piston rod of the drive unit 32 retracts at the same speed, driving the push plate 31 smoothly back to its starting position, waiting to receive the next valve plate and repeating the above pushing action. The entire pushing and resetting process is coordinated and controlled by a PLC or dedicated controller according to sensor signals to ensure smooth and precise operation.

[0043] like Figure 6As shown, the pusher plate 31 is tilted forward at a 2-5 degree angle to the plumb surface, and its surface has vertically oriented perforated strips. More specifically, the pusher plate 31 is tilted at a 2.5-degree angle to the plumb surface, causing the valve plate to tilt forward after being pushed out, preventing the valve plate from falling back and blocking the passage. Simultaneously, due to the action of the grinding fluid, the valve plate samples adhere to each other after the material accumulation process begins at the valve plate push-out guide rail 21, preventing them from tilting forward or backward. The pusher plate is preferably made of nylon sheet with perforated strips on its surface. This provides wear resistance and extends service life, while the perforated strips eliminate negative pressure adsorption, preventing the valve plate from sticking to the pusher plate and affecting separation.

[0044] At the initial position, the front edge of the push plate 31 is on the same plane as the bottom bearing surface of the slide 11, so that the valve plate can fall directly in front of the push plate after sliding down the slide. When the sensor signal is received, the push plate stops when it is pushed out to the final position. At the final position, the push plate 31 is pushed out of the starting end of the guide rail 21, and the front edge is on the same plane as the upright positioning plate 12, confirming that the valve plate is completely pushed out. A gap is left between the stacked material arrangement and the push plate so that the next valve plate can slide completely to the bottom, avoiding stacking loss of control caused by the valve plate not sliding completely down.

[0045] like Figure 1 , Figure 7 As shown, a tray 41 connected by a T-shaped support arm 42 is provided below the guide rail 21. The tray is used to support the entire mechanism and can also collect liquids such as grinding fluid and lubricating oil that overflow from the mechanism.

[0046] This embodiment provides a valve plate receiving mechanism for collecting and stacking valve plates on guide rail 21. Its working principle is as follows: The valve plate slides down from the upper part of the chute 11, passes the slide plate 15, triggers the photoelectric sensor 14, and changes its sliding direction due to the constraint of the upright positioning plate at the chute bend. It then slides vertically downwards to the bottom of the chute, landing between the two guide rail clamps 22, directly in front of the push plate 31. When the push plate 31 pushes the newly arrived valve plate forward, its leading edge first contacts and pushes the previous valve plate already located at the starting end of the guide rail 21. Because the guide rail clamps 22 are parallel and spaced apart, and the spacing can be adjusted by fixing screws 23 in the elongated positioning holes of the guide rail 21 to match the valve plate width, the inner walls of the two guide rail clamps 22 strictly limit the possibility of the valve plate shifting left or right during the pushing process, forcing it to move only along the length of the guide rail. Under the action of the push plate 31, the newly launched valve plate moves forward by a distance equal to the valve plate thickness, closely adhering to the rear end face of the previous valve plate. After pusher plate 31 retracts, the new valve plate remains upright due to the viscous effect of the grinding fluid and the lateral constraint of guide rail clamp 22. This cumulative pushing mechanism of "rear valve pushing front valve," combined with the limiting effect of rigid clamps on both sides, ensures that each newly added valve plate can make close and aligned contact with the preceding valve plate, effectively overcoming the misalignment problem caused by inertia or vibration in traditional stacking. The hollow stripes on the surface of guide rail 21 further reduce the frictional resistance between the bottom surface of the valve plate and the guide rail, making the pushing smoother and avoiding jamming.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve plate receiving mechanism, characterized in that, The slide (11) is L-shaped, with the upper half inclined and the lower half perpendicular to the horizontal plane. A vertical positioning plate (12) is provided at the corner of the slide (11), and the vertical positioning plate (12) forms a vertical gap with the bottom bearing surface of the slide (11). The lower end of the slide (11) is vertically connected to the starting end of the guide rail (21); An opening is provided on the bottom bearing surface of the lower end of the chute (11), and a push plate (31) is embedded in the opening.

2. A valve plate collecting mechanism according to claim 1, characterized in that: The upright positioning plate (12) is installed parallel to the bottom bearing surface of the lower half of the slide groove (11), with its upper edge slightly higher than the corner of the slide groove (11) and its lower edge parallel to the upper edge of the opening on the bottom bearing surface of the slide groove (11).

3. A valve plate collecting mechanism according to claim 1 or 2, characterized in that: The limiting clamps (13) are symmetrically arranged on the inner side walls of the slide (11). The limiting clamps (13) are installed on the inner side walls of the slide (11) and are two symmetrical L-shaped quadrangular prisms, narrow at the top and wide at the bottom, and are set to fit the bottom bearing surface of the slide (11).

4. The valve plate receiving mechanism according to claim 3, characterized in that: Two limiting clamps (13) are provided with a guide shaft (131) and a threaded rod (132) on the outside. The guide shaft (131) and the threaded rod (132) pass through the hole on the side wall of the slide groove (11). A T-nut (133) is provided on the outside of the side wall of the threaded shaft. The T-nut (133) is a columnar threaded sleeve with a groove on the sleeve. A clamping washer (134) is inserted into the groove and fastened to the side wall of the slide groove (11).

5. A valve plate receiving mechanism according to claim 1 or 2, characterized in that: There is a slide plate (14) on the bottom bearing surface of the slide (11). There are several parallel strip-shaped hollow engravings on the slide plate (14). A slide photoelectric sensor (15) is set above the bearing surface of the slide (11).

6. A valve plate receiving mechanism according to claim 1 or 2, characterized in that: The upper surface of the guide rail (21) is provided with two parallel spaced guide rail clamps (22), and the guide rail clamps (22) are connected to the guide rail (21) by fixing screws (23). A guide rail photoelectric sensor (24) is provided at the end of the guide rail (21).

7. A valve plate receiving mechanism according to claim 1 or 2, characterized in that: The push plate (31) is connected to the drive device (32), which is fixed on the upper surface of the guide rail (21).

8. A valve plate collecting mechanism according to claim 7, characterized in that: The push plate (31) is tilted forward, forming an angle of 2-5° with the horizontal plane, and the surface is provided with vertical hollow strips.

9. A valve plate receiving mechanism according to claim 8, characterized in that: The push plate (31) has two positioning positions: in the initial position, the push plate (31) is set at the opening below the slide groove (11), and the front edge is on the same plane as the bottom bearing surface of the slide groove (11); in the final position, the push plate (31) is pushed out of the starting end of the guide rail (21), and the front edge is on the same plane as the upright positioning plate (12).

10. A valve plate collecting mechanism according to claim 9, characterized in that: Below the guide rail (21) is a tray (41) connected by a T-shaped support arm (42).

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