Turnover detection device for inflating valve

Abstract

The utility model discloses an inflating valve overturning detection device, which comprises a rack, and a turntable mechanism, a feeding mechanism, a detection assembly and an overturning mechanism which are arranged on the rack, a rotating part of the turntable mechanism is provided with a plurality of notch parts, and inflating valve bodies sent out by the feeding mechanism enter the notch parts in sequence; the detection assembly comprises a first detection camera and a second detection camera; the overturning mechanism comprises a mounting frame, an overturning conveying mechanism and a feeding conveying mechanism, the overturning conveying mechanism and the feeding conveying mechanism are arranged on the mounting frame, an avoiding groove allowing the inflating valve body with the upward front face to enter is formed in the working face of the overturning conveying mechanism in a penetrating mode, and the working face of the overturning conveying mechanism is arranged in the tangential direction of the rotating part of the rotating disc mechanism. According to the inflating valve overturning detection device, the inflating valve body is overturned by 180 degrees through the overturning mechanism, so that a manual overturning mode is replaced, the labor intensity is reduced, the production stability and continuity are improved, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of valve stem detection technology, and in particular to a valve stem flipping detection device. Background Technology

[0002] A valve is an independent valve body device that allows gas to enter the space of a tubeless tire or inner tube when opened, and then automatically closes and seals to retain the gas and create pressure, preventing gas from escaping from the tire or inner tube. During the manufacturing process of valves, finished product inspection is an essential step to ensure their quality and performance. Existing inspection equipment typically uses an indexing plate to move the valve to different inspection stations, primarily for visual inspection to ensure it meets quality requirements. For comprehensive inspection, after the front visual inspection, the valve needs to be flipped for a reverse visual inspection. Current inspection equipment mostly relies on manual flipping of valves, which is labor-intensive, difficult to achieve continuous batch flipping, and lacks production stability and continuity, reducing inspection efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a valve stem flipping detection device to address the shortcomings of the aforementioned technologies. By using a flipping mechanism to flip the valve stem body 180°, it replaces the manual flipping method, reduces labor intensity, improves production stability and continuity, and effectively enhances detection efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a valve tip flipping detection device, including a frame, and a turntable mechanism, a feeding mechanism, a detection assembly, and a flipping mechanism disposed on the frame. The rotating part of the turntable mechanism is provided with a plurality of notches evenly distributed in a circular array. The valve tip body delivered by the feeding mechanism sequentially enters each of the notches. The detection assembly includes a first detection camera and a second detection camera. The detection end of the first detection camera faces downward and is located above the notch to detect the front side of the valve tip body. The flipping mechanism includes a mounting frame, and a flipping transport mechanism and a feeding transport mechanism disposed on the mounting frame. The working surface of the flipping transport mechanism has a through groove for the valve tip body facing upward to enter. The working surface of the flipping transport mechanism is arranged along the tangential direction of the rotating part of the turntable mechanism, so that the through groove corresponds to the corresponding notch. The through groove extends along the transport direction of the flipping transport mechanism.

[0005] The valve body, with its front side facing up, enters from the working surface of the flipping transport mechanism and is clamped and flipped 180° by the flipping transport mechanism and the feeding transport mechanism, so that the back side of the valve body comes out from the feeding transport mechanism with its back side facing up and moves and is conveyed with the feeding transport mechanism. The detection end of the second detection camera faces down and is located above the feeding transport mechanism to detect the back side of the valve body.

[0006] Preferably, the flipping transport mechanism includes two symmetrically arranged and spaced-apart flipping transport belts and a flipping drive motor for driving the two flipping transport belts, with the gap between the two flipping transport belts forming the clearance groove.

[0007] Preferably, the tumbling conveyor belt includes a tumbling platform, a tumbling driven roller, a tumbling driving roller, and a tumbling belt. The tumbling driven roller is rotatably connected to the tumbling platform. A tumbling driving shaft is provided on the mounting frame. Two tumbling driving rollers are fixedly sleeved on the two tumbling driving shafts. The tumbling belt is sleeved on the tumbling driven roller and the tumbling driving roller. The movable end of the tumbling drive motor is connected to the tumbling driving shaft.

[0008] Preferably, two rotating guide rollers are rotatably connected to the inner wall of the mounting frame and arranged coaxially at intervals, and the rotating belt abuts against the corresponding rotating guide roller to fit close to the bottom surface of the rotating platform.

[0009] Preferably, a feeding driven wheel is rotatably connected to the flipping drive shaft at a position relative to the outer side of the flipping drive roller. The feeding and transport mechanism includes a feeding platform, a feeding driven roller, a feeding drive roller, a feeding tension roller, a feeding belt, and a feeding drive motor. The feeding driven roller is rotatably connected to the feeding platform. The feeding drive roller and the feeding tension roller are rotatably connected to the inner wall of the mounting frame. The feeding belt is sleeved on the feeding driven roller, the two feeding driven wheels, the feeding drive roller, and the feeding tension roller. The movable end of the feeding drive motor is connected to the feeding drive roller.

[0010] Preferably, the frame is further provided with a finished product conveyor belt, the working surface of which cooperates with the working surface of the feeding and conveying mechanism. The finished product conveyor belt and the second detection camera are arranged opposite to each other on both sides of the feeding platform. The feeding platform is provided with a finished product pushing mechanism that pushes the valve body from the feeding and conveying mechanism to the finished product conveyor belt.

[0011] Preferably, the detection assembly further includes at least one side-view detection camera, which is positioned on the frame relative to the feeding and conveying mechanism. The detection end of the side-view detection camera corresponds to the valve body with its reverse side facing upward to detect the side of the valve body.

[0012] Preferably, the turntable mechanism includes a worktable, an indexing plate, and a turntable drive motor. The worktable is fixedly connected to the frame. The worktable has a movable groove for the indexing plate to rotate. The movable end of the turntable drive motor is connected to the indexing plate. Each of the recesses is opened on the outer side of the indexing plate. The inner wall of the movable groove cooperates with the inner wall of the corresponding recess to clamp the valve body facing upward.

[0013] Preferably, the first detection camera is positioned on the frame near the workstation, and a material sensing mechanism for sensing the valve body is provided on the workstation between the feeding mechanism and the first detection camera.

[0014] Preferably, a glue pressing detection mechanism, a defective product pushing mechanism, and a defective product detection mechanism are sequentially arranged on the workbench between the first detection camera and the flipping mechanism;

[0015] The adhesive pressing detection mechanism includes an adhesive pressing head and a lifting drive mechanism. The adhesive pressing head is located above the workstation, and the lifting end of the lifting drive mechanism is connected to the adhesive pressing head.

[0016] The frame is equipped with a third inspection camera, which is located below the workstation and is opposite to the pressure head, and is used to detect the dark cracks on the reverse side of the valve body.

[0017] The frame is provided with a defective product discharge pipe at a position relative to the defective product pushing mechanism. The opening of the defective product discharge pipe corresponds to the indexing plate. The defective product pushing mechanism pushes the valve body from the indexing plate into the opening of the defective product discharge pipe. The defective product detection mechanism is used to sense the valve body.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model provides a valve tip flipping detection device.

[0020] The valve body is moved from the feeding mechanism to the first inspection camera by a turntable mechanism to inspect the front side of the valve body. Then, the valve body is flipped 180° by a flipping mechanism so that the back side is facing up. It is then transported by the feeding and conveying mechanism to the second inspection camera to inspect the back side of the valve body. This replaces the manual flipping method, reduces labor intensity, improves production stability and continuity, and effectively improves inspection efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the detection device in the embodiment. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the detection device in the embodiment. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of the turntable mechanism in the embodiment;

[0024] Figure 4 This is a cross-sectional view of the defective product pushing mechanism in the embodiment;

[0025] Figure 5 This is a cross-sectional view of the adhesive bonding detection mechanism in the embodiment;

[0026] Figure 6 This is a cross-sectional view of the finished product conveyor belt in the embodiment;

[0027] Figure 7 This is a schematic diagram of the flipping mechanism in the embodiment;

[0028] Figure 8 This is a cross-sectional view of the flipping mechanism in the embodiment;

[0029] Figure 9 This is a schematic diagram of the tilting transport mechanism in the embodiment;

[0030] Figure 10 This is a cross-sectional view of the flipping drive shaft in the embodiment.

[0031] In the diagram: 1. Valve body; 2. Frame; 3. Turntable mechanism; 31. Workstation; 32. Indexing plate; 33. Turntable drive motor; 301. Notch; 302. Movable groove; 4. Feeding mechanism; 5. Tilting mechanism; 51. Mounting frame; 5101. Tilting drive shaft; 5102. Tilting guide roller; 5103. Feeding driven wheel; 52. Tilting transport mechanism; 521. Tilting transport belt; 5211. Tilting platform; 5212. Tilting driven roller; 5213. Tilting drive roller; 5214. Tilting belt; 522. Tilting drive motor; 53. Feeding... Transportation mechanism; 531, feeding platform; 532, feeding driven roller; 533, feeding driving roller; 534, feeding tension roller; 535, feeding belt; 536, feeding drive motor; 501, clearance groove; 6, first detection camera; 7, second detection camera; 8, third detection camera; 9, side-view detection camera; 10, finished product conveyor belt; 11, finished product pushing mechanism; 12, incoming material sensing mechanism; 13, adhesive pressing detection mechanism; 131, adhesive pressing head; 132, lifting drive mechanism; 14, defective product pushing mechanism; 15, defective product detection mechanism; 16, defective product discharge pipe. Detailed Implementation

[0032] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0033] refer to Figure 1 , Figure 2 , Figure 3 A valve tip flipping detection device includes a frame 2, a turntable mechanism 3, a feeding mechanism 4, a detection assembly, a glue pressing detection mechanism 13, a defective product pushing mechanism 14, a defective product detection mechanism 15, and a flipping mechanism 5, all mounted on the frame 2.

[0034] The turntable mechanism 3 includes a worktable 31, an indexing plate 32, and a turntable drive motor 33. The worktable 31 is fixedly connected to the frame 2. The worktable 31 has a movable groove 302 for the indexing plate 32 to rotate. The movable end of the turntable drive motor 33 is connected to the indexing plate 32. The indexing plate 32 is the rotating part of the turntable mechanism 3. The outer side of the indexing plate 32 has a number of recesses 301 evenly distributed in a ring array. The inner wall of the movable groove 302 cooperates with the inner wall of the corresponding recess 301 to clamp the valve body 1 facing upward.

[0035] The feeding mechanism 4 is a vibratory feeder. The feeding port of the feeding mechanism 4 corresponds to the indexing plate 32. The valve body 1 fed by the feeding mechanism 4 enters each recess 301 in sequence.

[0036] The inspection assembly includes a first inspection camera 6, a second inspection camera 7, and four side-view inspection cameras 9. The first inspection camera 6 is located on the frame 2 near the worktable 31. The inspection end of the first inspection camera 6 faces downward and is located above the notch 301 to inspect the front of the valve body 1.

[0037] A material receiving mechanism 12 is provided on the workstation 31 between the feeding mechanism 4 and the first detection camera 6. The material receiving mechanism 12 can be a photoelectric sensor and is used to sense the valve body 1. The feeding mechanism 4, the material receiving mechanism 12, the first detection camera 6, the adhesive pressing detection mechanism 13, the defective product pushing mechanism 14, the defective product detection mechanism 15, and the flipping mechanism 5 are arranged sequentially around the circumference of the indexing plate 32. The turntable drive motor 33 drives the indexing plate 32 to rotate, so that the valve body 1 with the front facing upward on the notch 301 passes sequentially through the material receiving mechanism 12, the first detection camera 6, the adhesive pressing detection mechanism 13, the defective product pushing mechanism 14, the defective product detection mechanism 15, and the flipping mechanism 5.

[0038] refer to Figure 5The pressure testing mechanism 13 includes a pressure head 131 and a lifting drive mechanism 132. The pressure head 131 is located above the worktable 31. The lifting drive mechanism 132 is a telescopic cylinder or an electric push rod. The lifting end of the lifting drive mechanism 132 is connected to the pressure head 131. When the indexing plate 32 moves the valve stem facing upwards onto the pressure testing mechanism 13, the lifting drive mechanism 132 drives the pressure head 131 to apply pressure to the valve stem body 1 to deform it. The frame 2 is equipped with a third inspection camera 8, which is located below the worktable 31 and is vertically opposite to the pressure head 131. It is used to detect the dark cracks in the valve stem body 1.

[0039] refer to Figure 4 A defective product discharge pipe 16 is provided on the frame 2 relative to the defective product pushing mechanism 14. The opening of the defective product discharge pipe 16 corresponds to the indexing plate 32. The defective product pushing mechanism 14 is an air-blowing needle. When the second inspection camera 7 detects a dark crack in the valve body 1, the indexing plate 32 moves the valve body 1 to the defective product pushing mechanism 14. The defective product pushing mechanism 14 pushes the valve body 1 from the indexing plate 32 into the opening of the defective product discharge pipe 16, thereby discharging the defective valve body 1. The indexing plate 32 moves the corresponding notch 301 to the defective product detection mechanism 15. The defective product detection mechanism 15 can be a photoelectric sensor. The defective product detection mechanism 15 is used to sense the valve body. If the defective valve body 1 is not removed from the indexing plate 32 and is sensed by the defective product detection mechanism 15, the indexing plate 32 rotates in the opposite direction to move the defective valve body 1 to the defective product pusher mechanism 14, so as to ensure that the defective valve body 1 is blown off the indexing plate 32 by the defective product pusher mechanism 14.

[0040] refer to Figure 7 , Figure 8 , Figure 9 , Figure 10 The flipping mechanism 5 includes a mounting frame 51, a flipping transport mechanism 52, and a feeding transport mechanism 53. The mounting frame 51 is fixedly connected to the frame 2. The flipping transport mechanism 52 and the feeding transport mechanism 53 are both mounted on the mounting frame 51. The flipping transport mechanism 52 includes two symmetrically arranged and spaced-apart flipping transport belts 521 and a flipping drive motor 522 that drives the two flipping transport belts 521. The gap between the two flipping transport belts 521 forms a clearance groove 501. The clearance groove 501 extends along the transport direction of the flipping transport mechanism 52. The upper surface of the two flipping transport belts 521 is the working surface of the flipping transport mechanism 52. The working surface of the flipping transport mechanism 52 is arranged along the tangential direction of the rotating part of the turntable mechanism 3.

[0041] The tilting conveyor belt 521 includes a tilting platform 5211, a tilting driven roller 5212, a tilting driving roller 5213, and a tilting belt 5214. The tilting driven roller 5212 is rotatably connected to the tilting platform 5211. A tilting driving shaft 5101 is provided on the mounting frame 51. Two tilting driving rollers 5213 are fixedly sleeved on the two tilting driving shafts 5101. The tilting belt 5214 is sleeved on the tilting driven roller 5212 and the tilting driving roller 5213. Two tilting guide rollers 5102 are rotatably connected to the inner wall of the mounting frame 51, spaced apart and coaxially arranged. The tilting belt 5214 abuts against the corresponding tilting guide roller 5102 to fit close to the bottom surface of the tilting platform 5211. The movable end of the tilting drive motor 522 is connected to the tilting driving shaft 5101. Preferably, the movable end of the tilting drive motor 522 and the tilting driving shaft 5101 are connected by a synchronous belt transmission assembly.

[0042] A feeding driven roller 5103 is rotatably connected to the tilting drive shaft 5101 at a position relative to the outer side of the tilting drive roller 5213. The feeding and conveying mechanism 53 includes a feeding platform 531, a feeding driven roller 532, a feeding drive roller 533, a feeding tension roller 534, a feeding belt 535, and a feeding drive motor 536. The feeding driven roller 532 is rotatably connected to the feeding platform 531, and the feeding drive roller 533 and the feeding tension roller 534 are rotatably connected to the mounting frame 51. On the inner wall, the feeding belt 535 is sleeved on the feeding driven roller 532, two feeding driven pulleys 5103, the feeding drive roller 533, and the feeding tension roller 534. The outer diameter of the feeding driven pulley 5103 is larger than the outer diameter of the turning drive roller 5213, so that the turning belt 5214 and the feeding belt 535 have a clamping gap for holding the valve body 1 at the position of the turning drive shaft 5101, ensuring that each valve body 1 rotates continuously and stably by 180° in sequence. The movable end of the feeding drive motor 536 is connected to the feeding drive roller 533. Preferably, the movable end of the feeding drive motor 536 and the feeding drive roller 533 are connected by a synchronous belt transmission assembly.

[0043] refer to Figures 1 to 10The detection device uses a turntable mechanism 3 to transfer qualified valve body 1 from the feeding mechanism 4 to the first detection camera 6 to detect the front side of the valve body 1. The clearance groove 501 corresponds to the corresponding notch 301. The valve body 1 with the front side facing up enters the clearance groove 501. The valve body 1 with the front side facing up enters from the working surface of the flipping transport mechanism 52 and is clamped and flipped 180° by the flipping transport mechanism 52 and the feeding transport mechanism 53, so that the back side of the valve body 1 comes out from the feeding transport mechanism 53 with the back side facing up and is transported to the second detection camera 7 with the feeding transport mechanism 53. The detection end of the second detection camera 7 is facing down and located above the feeding transport mechanism 53 to detect the back side of the valve body 1. This replaces the manual flipping method, reduces labor intensity, improves production stability and continuity, and effectively improves detection efficiency.

[0044] Four side-view inspection cameras 9 are arranged in a circular array and positioned on the frame 2 relative to the feeding and conveying mechanism 53. The four side-view inspection cameras 9 are located between the second inspection camera 7 and the turntable mechanism 3. The detection end of the side-view inspection camera 9 corresponds to the valve body 1 with the reverse side facing upward to detect the side of the valve body 1.

[0045] The frame 2 is also equipped with a finished product conveyor belt 10, which is a motor-driven conveyor belt and is existing technology, so it will not be described in detail here. The working surface of the finished product conveyor belt 10 is matched with the working surface of the feeding and conveying mechanism 53. The finished product conveyor belt 10 and the second detection camera 7 are arranged opposite each other on both sides of the feeding platform 531. The feeding platform 531 is equipped with a finished product pushing mechanism 11, which is an air blowing needle. The finished product pushing mechanism 11 pushes the valve body 1 from the feeding and conveying mechanism 53 to the finished product conveyor belt 10 so that qualified valves can be discharged.

[0046] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A valve tip flipping detection device, characterized in that, The system includes a frame (2), a turntable mechanism (3), a feeding mechanism (4), a detection assembly, and a flipping mechanism (5) mounted on the frame (2). The rotating part of the turntable mechanism (3) is provided with a plurality of notches (301) evenly distributed in a circular array. The valve body (1) fed by the feeding mechanism (4) sequentially enters each of the notches (301). The detection assembly includes a first detection camera (6) and a second detection camera (7). The detection end of the first detection camera (6) faces downward and is located above the notches (301) to detect the front of the valve body (1). The flipping mechanism (5) includes a mounting frame (51), a flipping transport mechanism (52) and a feeding transport mechanism (53) disposed on the mounting frame (51). The working surface of the flipping transport mechanism (52) is provided with a clearance groove (501) for the valve body (1) facing upward to enter. The working surface of the flipping transport mechanism (52) is arranged along the tangential direction of the rotating part of the turntable mechanism (3), so that the clearance groove (501) corresponds to the corresponding notch (301). The clearance groove (501) extends along the transport direction of the flipping transport mechanism (52). The valve body (1) facing upward enters from the working surface of the flipping transport mechanism (52) and is clamped and flipped 180° by the flipping transport mechanism (52) and the feeding transport mechanism (53), so that the back side of the valve body (1) comes out from the feeding transport mechanism (53) facing upward and moves and is transported with the feeding transport mechanism (53). The detection end of the second detection camera (7) faces downward and is located above the feeding transport mechanism (53) to detect the back side of the valve body (1).

2. The valve tipping detection device according to claim 1, characterized in that, The flipping transport mechanism (52) includes two flipping transport belts (521) arranged symmetrically and at intervals, and a flipping drive motor (522) that drives the two flipping transport belts (521). The gap between the two flipping transport belts (521) forms the clearance groove (501).

3. The valve tipping detection device according to claim 2, characterized in that, The flipping conveyor belt (521) includes a flipping platform (5211), a flipping driven roller (5212), a flipping driving roller (5213), and a flipping belt (5214). The flipping driven roller (5212) is rotatably connected to the flipping platform (5211). A flipping driving shaft (5101) is provided on the mounting frame (51). Two flipping driving rollers (5213) are fixedly sleeved on the two flipping driving shafts (5101). The flipping belt (5214) is sleeved on the flipping driven roller (5212) and the flipping driving roller (5213). The movable end of the flipping drive motor (522) is connected to the flipping driving shaft (5101).

4. The valve tipping detection device according to claim 3, characterized in that, The mounting bracket (51) has two rotating guide rollers (5102) that are spaced apart and coaxially arranged on its inner wall. The rotating belt (5214) abuts against the corresponding rotating guide roller (5102) to fit close to the bottom surface of the rotating platform (5211).

5. The valve tipping detection device according to claim 3, characterized in that, The rotating drive shaft (5101) is rotatably connected to a feeding driven roller (5103) at a position relative to the outer side of the rotating drive roller (5213). The feeding and conveying mechanism (53) includes a feeding platform (531), a feeding driven roller (532), a feeding drive roller (533), a feeding tension roller (534), a feeding belt (535), and a feeding drive motor (536). The feeding driven roller (532) is rotatably connected to the feeding platform (5101). On the mounting frame (51), the feeding drive roller (533) and the feeding tension roller (534) are rotatably connected to the inner wall of the mounting frame (51). The feeding belt (535) is sleeved on the feeding driven roller (532), the two feeding driven wheels (5103), the feeding drive roller (533) and the feeding tension roller (534). The movable end of the feeding drive motor (536) is connected to the feeding drive roller (533).

6. The valve tipping detection device according to claim 5, characterized in that, The frame (2) is also provided with a finished product conveyor belt (10), the working surface of the finished product conveyor belt (10) is matched with the working surface of the feeding and conveying mechanism (53), the finished product conveyor belt (10) and the second detection camera (7) are arranged opposite to each other on both sides of the feeding platform (531), and the feeding platform (531) is provided with a finished product pushing mechanism (11) for pushing the valve body (1) from the feeding and conveying mechanism (53) to the finished product conveyor belt (10).

7. The valve tipping detection device according to claim 1, characterized in that, The inspection assembly also includes at least one side-view inspection camera (9), which is disposed on the frame (2) relative to the feeding and transport mechanism (53). The inspection end of the side-view inspection camera (9) corresponds to the valve body (1) facing upwards to inspect the side of the valve body (1).

8. The valve tipping detection device according to claim 1, characterized in that, The turntable mechanism (3) includes a worktable (31), an indexing plate (32), and a turntable drive motor (33). The worktable (31) is fixedly connected to the frame (2). The worktable (31) has a movable groove (302) for the indexing plate (32) to rotate. The movable end of the turntable drive motor (33) is connected to the indexing plate (32). Each of the recesses (301) is opened on the outer side of the indexing plate (32). The inner wall of the movable groove (302) cooperates with the inner wall of the corresponding recess (301) to clamp the valve body (1) facing upward.

9. The valve tipping detection device according to claim 8, characterized in that, The first detection camera (6) is located on the frame (2) near the worktable (31). The worktable (31) is provided with a material sensing mechanism (12) for sensing the valve body (1) between the feeding mechanism (4) and the first detection camera (6).

10. A valve tipping detection device according to claim 8, characterized in that, On the workstation (31), between the first detection camera (6) and the flipping mechanism (5), a glue pressing detection mechanism (13), a defective product pushing mechanism (14), and a defective product detection mechanism (15) are arranged in sequence; The adhesive pressing detection mechanism (13) includes an adhesive pressing head (131) and a lifting drive mechanism (132). The adhesive pressing head (131) is located above the workstation (31), and the lifting end of the lifting drive mechanism (132) is connected to the adhesive pressing head (131). The frame (2) is equipped with a third inspection camera (8), which is located below the workbench (31) and is vertically opposite to the pressure head (131) for detecting the dark crack on the reverse side of the valve body (1). The frame (2) is provided with a defective product discharge pipe (16) at a position relative to the defective product pushing mechanism (14). The opening of the defective product discharge pipe (16) corresponds to the indexing plate (32). The defective product pushing mechanism (14) pushes the valve body (1) from the indexing plate (32) into the opening of the defective product discharge pipe (16). The defective product detection mechanism (15) is used to sense the valve body.

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