Valve guide size detection device

Abstract

The present invention relates to a valve guide size detection device, which may include a feeding mechanism, a rotating disk, a size detection component and a discharging mechanism. The rotating disk is arranged between the feeding mechanism and the discharging mechanism, and is composed of two parallel and spaced circular plates fixedly mounted on a rotating shaft. A plurality of evenly spaced card slots are arranged on the periphery of the rotating disk, and the card slots are used to receive the valve guide to be detected from the feeding mechanism. The size detection component includes a laser caliper, a CCD camera for detecting the end size, and a CCD camera for detecting the end face concentricity. The discharging mechanism is used to transfer the valve guide from the rotating disk to a qualified product container and a unqualified product container according to the detection result. The present invention has a compact structure, can automatically detect the appearance size of the valve guide and automatically distinguish qualified products from unqualified products, and has the characteristics of high production efficiency, high detection accuracy, and reliable detection.

Description

Technical Field

[0001] The invention belongs to the field of automatic detection equipment, and in particular relates to a valve guide size detection device. Background Art

[0002] The valve guide is a guide device for the valve of the automobile engine. It guides the valve and transfers the heat on the valve stem to the cylinder head through the valve guide. Since the valve guide is a precision accessory, it has high requirements for dimensional accuracy. During the production process, it is necessary to test the dimensions of each position (for example, the outer diameter, the step size of the end, the chamfer size, and the concentricity of both ends, etc.). Most of the existing tests are performed by experienced employees, which has high labor costs, is prone to false detection, and has low efficiency. Summary of the invention

[0003] The present invention aims to provide a valve guide size detection device to solve the above problems. To this end, the specific technical solutions adopted by the present invention are as follows:

[0004] A valve guide size detection device may include a feeding mechanism, a turntable, a size detection assembly and a discharging mechanism. The turntable is arranged between the feeding mechanism and the discharging mechanism, and is composed of two parallel and spaced circular plates fixedly mounted on a rotating shaft. A plurality of evenly spaced slots are arranged on its periphery, and the slots are used to receive the valve guide to be detected from the feeding mechanism. The size detection assembly includes a laser diameter meter, a CCD camera for end size detection and a CCD camera for end face concentricity detection. The transmitting end and the receiving end of the laser rangefinder are respectively located on both radial sides of the turntable, the CCD camera for end size detection is arranged above the turntable, and the CCD camera for end face concentricity detection is arranged on both axial sides of the turntable. The discharging mechanism is used to transfer the valve guide from the turntable to a qualified product container and a failed product container according to the detection results.

[0005] Furthermore, the feeding mechanism includes an inclined slide, a baffle and a pressure plate, the baffles are installed on both sides of the inclined slide, and the distance between them is slightly greater than the length of the valve guide, the pressure plate is suspended above the inclined slide, and its height is set so that the valve guides will not overlap, and the lower end of the inclined slide is close to the turntable so that the valve guide can roll into the slot.

[0006] Furthermore, the feeding mechanism also includes a width adjustment mechanism for adjusting the distance between the baffles, and the width adjustment mechanism includes an adjusting handwheel, two synchronous pulleys, a belt, two screws, four nuts, two bearing seats, four bearings, two mounting plates and four connecting blocks. The two bearing seats are fixedly installed on the lower surface of the inclined slide at intervals, and each screw is installed on the bearing seat through two bearings, and threads with opposite spiral directions are respectively provided near the two ends. The two mounting plates are respectively located on both sides of the bearing seat, and the nut is fixedly installed in the mounting plate and meshed with the threaded portion of the screw. The synchronous pulley is fixedly installed on one end of the screw, and the belt is wrapped around the two synchronous pulleys. The adjusting handwheel is drivingly connected to one of the synchronous pulleys, and one end of the connecting block is fixed to the mounting plate, and the other end is fixed to the baffle.

[0007] Furthermore, the valve guide size detection assembly also includes a slide assembly, which includes a base plate, a side plate, a horizontal slide rail, a horizontal slider, a connecting block, a screw support, a screw and a motor. The horizontal slide rail, the connecting block and the screw support are fixedly mounted on the base plate, the horizontal slider is slidably engaged on the horizontal slide rail, the motor is mounted on the side plate, and its output shaft is drivingly connected to the screw, a nut is installed in the connecting block, the screw is inserted through the nut and the screw support, and the horizontal slider and the connecting block are fixedly connected to the mounting seat of the end size detection CCD camera.

[0008] Furthermore, the valve guide size detection assembly also includes a height adjustment mechanism, which includes a mounting plate, a vertical slide rail, a vertical slider, a screw, a nut block, a screw mounting seat and a handwheel, the vertical slide rail, the nut block and the screw mounting seat are fixedly mounted on the mounting plate, the vertical slider is slidably engaged on the vertical slide rail, the vertical slider and the nut block are fixedly connected to the bottom plate of the slide assembly, the screw is penetrated through the nut block and the screw mounting seat, and the handwheel is fixedly mounted on the upper end of the screw.

[0009] Furthermore, the mounting plate is fixedly mounted on two columns, one of which is provided with a height indicating scale, and a pointer is fixedly mounted on the side plate, and the pointer is aligned with the height indicating scale.

[0010] Furthermore, the discharging mechanism includes a pushing mechanism, a qualified product discharging mechanism and a rejected product discharging mechanism, the pushing mechanism includes a push rod and a push rod driving device, the push rod is located between the two circular plates of the turntable, and is used to push the valve guide that has passed the inspection to the feed end of the qualified product discharging mechanism, the rejected product discharging mechanism includes a dividing hopper, a dividing motor and a rejected product discharging chute, the dividing hopper is fixedly mounted on the output shaft of the dividing motor, and is located below the discharging station of the turntable, the rejected product discharging chute is arranged below the dividing hopper, and is provided with a plurality of sub-chute separated from each other, each sub-chute corresponds to a rejected product with a defect, and the dividing motor rotates the dividing hopper to the corresponding sub-chute according to the inspection result.

[0011] Furthermore, an opening is provided at the lower end of the sub-slide, and the defective product container is located below the opening.

[0012] Furthermore, the qualified product discharging mechanism includes an inclined slide, a baffle and a pressure plate. The upper end of the inclined slide is close to the turntable to receive the valve guide pushed out of the turntable by the push rod. The baffle is installed on both sides of the inclined slide, and the distance between them is slightly larger than the length of the valve guide. The pressure plate is suspended above the inclined slide, and its height is set so that the valve guides will not overlap.

[0013] Furthermore, the qualified product discharging mechanism also includes a thumbwheel and a driving motor for driving the thumbwheel to rotate, and the thumbwheel is arranged at the discharging end of the inclined slideway.

[0014] The present invention adopts the above technical solution, and has the beneficial effects that the present invention has a compact structure, can automatically detect the appearance dimensions of the valve guide and automatically distinguish qualified products from unqualified products, and has the characteristics of high production efficiency, high detection accuracy, and reliable detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0016] Figure 1 is a perspective view of a valve guide size detection device according to an embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A three-dimensional diagram of a feeding mechanism of a valve guide size detection device shown;

[0018] Figure 3 yes Figure 1 A three-dimensional diagram of a turntable and a pusher mechanism of a valve guide size detection device shown;

[0019] Figure 4 yes Figure 1 A perspective view of a size detection assembly of a valve guide size detection device shown;

[0020] Figure 5 yes Figure 4 Another perspective view of the size detection assembly shown, with some parts removed;

[0021] Figure 6 yes Figure 1 A three-dimensional diagram of a qualified product discharging mechanism of a valve guide size detection device shown;

[0022] Figure 7 yes Figure 1 A three-dimensional diagram of a non-conforming material discharging mechanism of a valve guide size detection device is shown. DETAILED DESCRIPTION

[0023] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0024] like Figures 1 to 7As shown, a valve guide size detection device may include a feeding mechanism 1, a turntable 2, a size detection component 3, a discharging mechanism 4, and a control system (not shown). The turntable 2 is arranged between the feeding mechanism 1 and the discharging mechanism 4, and is composed of two parallel and spaced circular plates 21 fixedly mounted on a rotating shaft 22. A plurality of evenly spaced slots 211 are arranged on its periphery, and the slots 211 are used to receive the valve guide 100 to be detected from the feeding mechanism 1. The size detection component 3 may include a laser diameter meter 31, a CCD camera 32 for end size detection, and a CCD camera 33 for end face concentricity detection. The transmitting end and the receiving end of the laser rangefinder 31 are respectively located on both sides of the radial direction of the turntable 2 to detect the outer diameter of the valve guide 100. Specifically, the laser rangefinder 31 sends the measured outer diameter data to the control system, and the control system compares the outer diameter data with the standard. If it meets the standard, it is determined to be qualified, otherwise it is determined to be unqualified. The end size detection CCD camera 32 is arranged above the turntable 2, and is used to detect the dimensions (e.g., chamfer dimensions and step dimensions, etc.) of the two ends of the valve guide 100. Specifically, the end size detection CCD camera 32 sends the photographed photos to the control system, and the control system processes the photos through a corresponding program to obtain the corresponding dimension values ​​and compares them with the standards. If they meet the standards, they are judged as qualified, otherwise they are judged as unqualified. The end face concentricity detection CCD camera 33 is arranged on both axial sides of the turntable 2, and is used to detect the end face concentricity of the valve guide 100. Specifically, the photos taken by the end face concentricity detection CCD camera 33 are sent to the control system, and the control system processes the photos through a corresponding program and compares the concentricity of the photos of the two end faces. If the concentricity standard is met, it is judged as qualified, otherwise it is judged as unqualified. The discharging mechanism 4 is used to transfer the valve guide 100 from the turntable to a qualified product container and a unqualified product container according to the detection results. The control system is a PLC-based control system, and those skilled in the art can configure and program it specifically according to actual needs. It will not be described here. The specific structures of the feeding mechanism 1, the turntable 2, the size detection component 3 and the discharging mechanism 4 are described below respectively.

[0025] like Figure 2As shown, the feeding mechanism 1 includes an inclined slide 11, a baffle 12 and a pressure plate 13. The upper end of the inclined slide 11 is a feed port, and the lower end is close to the turntable 2, so that the valve guide 100 can roll into the card slot 211. The baffles 12 are installed on both sides of the inclined slide 11, and the distance between them can be adjusted by the width adjustment mechanism 14 according to the length of the valve guide 100. The distance is usually slightly larger than the length of the valve guide 100, so that the valve guide 100 will not be skewed during the sliding process. Specifically, the width adjustment mechanism 14 includes an adjustment hand wheel 141, two synchronous pulleys 142, a belt 143, two screws 144, four nuts (not shown), two bearing seats (not shown), four bearings (not shown), two mounting plates 145 and four connecting blocks 146. Two bearing seats are fixedly installed on the lower surface of the inclined slide 11 at intervals, each screw 144 is installed on the bearing seat through two bearings, and the positions near the two ends are respectively provided with threads with opposite spiral directions, and two mounting plates 145 are respectively located on both sides of the bearing seat, and the nut is fixedly installed in the mounting plate and meshes with the threaded portion of the screw 144, the synchronous pulley 142 is fixedly installed on one end of the screw 144, the belt 143 is wrapped around the two synchronous pulleys 142, the adjusting hand wheel 141 is drivingly connected with one of the synchronous pulleys 142, and one end of the connecting block 146 is fixed to the mounting plate 145, and the other end is fixed to the baffle 12. By rotating the adjusting hand wheel 141, the two mounting plates 145 are driven to move toward or in opposite directions, thereby driving the baffle 12 to move toward or in opposite directions, so as to adjust the distance between the baffles 12 (i.e., the width of the inclined slide 11).

[0026] The pressing plate 13 is suspended above the inclined slideway 11, and its height is set to be slightly larger than the outer diameter of the valve guide 100 so that the valve guide 100 will not overlap during the sliding process. In the illustrated embodiment, the height of the pressing plate 13 is adjusted by changing the installation position of its mounting seat 132. The pressing plate 13 is provided with an opening 131 near the entrance of the inclined slideway 11, and a proximity switch 15 is installed above the opening. The proximity switch 15 is used to determine whether there is a shortage of material. Preferably, the portion of the pressing plate where the opening 131 is located is tilted upward to facilitate loading.

[0027] In addition, a pair of photoelectric sensors 16 are provided on both sides of the entrance of the inclined slide 11. The photoelectric sensors 16 are used to check whether there is crooked material. If there is crooked material, the machine will be stopped and an alarm will be issued for manual processing.

[0028] like Figure 3 As shown, the rotating shaft 22 is fixedly mounted on the support 23 through a bearing and is drivingly connected to the motor 24. A sensing disc 25 is also fixedly mounted on the rotating shaft 22, and a groove 251 corresponding to the card slot 211 is provided on the sensing disc 25, and a slot-shaped photoelectric switch 26 is installed on the support 23. The sensing disc 25 cooperates with the slot-shaped photoelectric switch 26 to detect the rotation angle of the rotating disc 22.

[0029] like Figure 4 and 5 As shown, in order to facilitate the end size detection CCD camera 32 to detect valve guides 100 of different lengths, the end size detection CCD camera 32 is installed on a slide assembly 34. The slide assembly 34 may include a bottom plate 341, a side plate 342, a horizontal slide rail 343, a horizontal slider 344, a connecting block 345, a screw support 346, a screw 347 and a motor 348. The horizontal slide rail 343, the connecting block 345 and the screw support 346 are fixedly installed on the bottom plate 341, the horizontal slider 344 is slidably engaged on the horizontal slide rail 343, the motor 348 is installed on the side plate 342, and its output shaft is drivingly connected to the screw 347 (for example, through a coupling), a nut (not shown) is installed in the connecting block 3434, and the screw 347 is inserted through the nut and the screw support 346, and the horizontal slider 344 and the connecting block 345 are fixedly connected to the mounting base 321 of the end size detection CCD camera 32. The motor 348 drives the screw rod 347 to rotate, driving the horizontal slider 344 to move along the horizontal slide rail 343, thereby adjusting the end size detection CCD camera 32 to a desired horizontal position to suit the length of the valve guide being detected. Preferably, the motor 348 is a stepper motor or a servo motor to control the movement of the end size detection CCD camera 32.

[0030] In the illustrated embodiment, the valve guide size detection device may further include a height adjustment mechanism 35, which is used to adjust the height of the end size detection CCD camera 32. Specifically, the height adjustment mechanism 35 may include a mounting plate 351, a vertical slide rail 352, a vertical slider 353, a screw 354, a nut block 355, a screw mounting seat 356, and a hand wheel 357. The mounting plate 351 is fixedly mounted on the two columns 36, the vertical slide rail 352, the nut block 355, and the screw mounting seat 356 are fixedly mounted on the mounting plate 351, the vertical slider 353 is slidably engaged on the vertical slide rail 352, the bottom plate 341 of the slide assembly 34 is fixedly connected to the vertical slider 353 and the nut block 355, the screw 354 is inserted through the nut block 355 and the screw mounting seat 356, and the hand wheel 357 is fixedly mounted on the upper end of the screw 354. By turning the hand wheel 357, the height adjustment of the end size detection CCD camera 32 can be achieved.

[0031] In order to visually adjust the height of the end size detection CCD camera 32, a height indicator scale 358 is provided on one of the columns 36, and a pointer 359 is fixedly installed on the side plate 342, and the pointer 359 is aligned with the height indicator scale 358. The height indicator scale 358 can be directly processed on the column, or it can be a label paper attached to the column.

[0032] In order to adapt the end face concentricity detection CCD camera 33 to valve guides of different lengths, the mounting base 331 of the end face concentricity detection CCD camera 33 is slidably mounted on the slide rail 332 and fixed by screws 333. When adjustment is required, the screws 333 are loosened, and then the end face concentricity detection CCD camera 33 is moved to the desired position, and finally the screws 333 are tightened to fix it.

[0033] It should be noted that the laser diameter gauge 31, the end size detection CCD camera 32 and the end face concentricity detection CCD camera 33 are all commercially available. In addition, in order to ensure the shooting effect of the end size detection CCD camera 32 and the end face concentricity detection CCD camera 33, the valve guide size detection device is also equipped with corresponding light sources 5 and 6, such as Figure 1 Among them, the light source 5 is used for the end face concentricity detection CCD camera 33, which is a coaxial ring light source, and the light source 6 is used for the end head size detection CCD camera 32, which is a plane light source irradiating upward.

[0034] like Figure 1 , 3 As shown in Figures 6 and 7, the discharging mechanism 4 includes a pushing mechanism 41, a qualified product discharging mechanism 42 and a non-qualified product discharging mechanism 43. The pushing mechanism 41 includes a push rod 411 and a push rod driving device 412. The push rod 41 is located between the two circular plates 21 of the turntable 2, and is used to push the valve guide 100 that has passed the inspection to the feeding end (specifically, the entrance of the slideway 421) of the qualified product discharging mechanism 42. The discharging mechanism 4 adopts the principle of zero misjudgment of qualified workpieces. Only when the valve guide is qualified, the pushing mechanism 41 will be activated to ensure that the non-qualified valve guide will not be mixed into the qualified valve guide due to the malfunction of the pushing mechanism 41. The top end of the push rod 41 has a push block, and the lower end is drivingly connected to the push rod driving device 412. Preferably, the push rod driving device 412 is a cylinder.

[0035] The qualified product discharging mechanism 42 is similar in structure to the feeding mechanism 1, and also includes an inclined slide 421, a baffle 422 and a pressing plate 423. The upper end of the inclined slide 421 is close to the turntable 2 to receive the valve guide 100 pushed out of the turntable by the push rod 41. The baffles 422 are installed on both sides of the inclined slide 421, and the distance between them is slightly greater than the length of the valve guide 100. The distance between the baffles 422 can be adjusted by a width adjustment mechanism 424. The structure of the width adjustment mechanism 424 is the same as the width adjustment structure 14 of the feeding mechanism 1, and will not be described here. The pressing plate 423 is suspended above the inclined slide 421, and its height is set so that the valve guide 100 will not overlap. Similarly, the height of the pressing plate 423 can also be adjusted manually.

[0036] In the illustrated embodiment, the qualified product discharging mechanism 42 further includes a dial wheel 425 and a driving motor 426 for driving the dial wheel 425 to rotate. The dial wheel 425 is arranged at the discharging end of the inclined slideway 421, and is used to place the qualified valve guides 100 one by one into the qualified product container or the feeding station of the next process. Preferably, the driving motor 426 is a stepping motor or a servo motor. A sensing disk 427 is also fixed on the rotating shaft of the dial wheel 425, and the sensing disk 427 cooperates with the slot-shaped photoelectric switch 428 to detect the rotation angle of the dial wheel 425.

[0037] The defective product discharging mechanism 43 may include a distributing hopper 431, a distributing motor 432 and a defective product discharging chute 433. The distributing hopper 431 is fixedly mounted on the output shaft of the distributing motor 432 and is located below the discharging station of the turntable 2. The defective product discharging chute 433 is arranged below the distributing hopper 431 and is provided with a plurality of sub-chute separated from each other, each sub-chute corresponding to a defective product container, that is, corresponding to a defective product with a defect. An opening 4331 is provided at the lower end of the sub-chute, and a defective product container is arranged below the opening, and the valve guide can fall into the defective product container from the opening 4331. The distributing motor 431 rotates the distributing hopper 431 to the corresponding sub-chute according to the detection result, so as to place the defective products in the corresponding defective product containers according to the defect type. This is conducive to statistical analysis of defects to find out the causes of defects and achieve the purpose of improving production processes.

[0038] The working principle of the valve guide size detection device of the present invention is briefly described. The neatly arranged valve guides roll from the inclined slide of the feeding mechanism 1 to the card slot of the turntable 2 in turn. As the turntable 2 rotates, the step size and chamfer size of the two ends of the valve guide are first detected by the end size detection CCD camera 32, and then the outer diameter of the valve guide is detected by the laser diameter gauge 31, and the concentricity of the two ends of the valve guide is detected by the end face concentricity detection CCD camera 33. According to the detection results, the qualified valve guides are sent to the inclined slide of the qualified product discharging mechanism 42 by the pushing mechanism, and the unqualified valve guides are sorted and placed in different sub-slides of the unqualified product discharging mechanism 43 according to different defects. The entire detection process is carried out automatically, and manual processing is only required in abnormal circumstances. There is no need for a large number of workers, low labor costs, high production efficiency, and high detection accuracy.

[0039] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A valve guide size detection device, characterized in that: It comprises a feeding mechanism, a turntable, a size detection assembly, a support and a discharging mechanism. The turntable is arranged between the feeding mechanism and the discharging mechanism, and is composed of two parallel and spaced circular plates fixedly mounted on a rotating shaft. A plurality of evenly spaced card slots are arranged on the periphery of the turntable. The card slots are used to receive the valve guide to be detected from the feeding mechanism. The size detection assembly comprises a laser diameter gauge, a CCD camera for detecting the end size, and a CCD camera for detecting the end face concentricity. The transmitting end and the receiving end of the laser diameter gauge are respectively located on both radial sides of the turntable. The CCD camera for detecting the end size is arranged above the turntable, and the CCD camera for detecting the end face concentricity is arranged on both axial sides of the turntable. The discharging mechanism is used to transfer the valve guide from the turntable to a qualified product container and a failed product container according to the detection result. The rotating shaft is fixedly mounted on the support through a bearing, and a sensing disc is also fixedly mounted on the rotating shaft. The sensing disc is provided with a groove corresponding to the card slot, and a slot-shaped photoelectric switch is mounted on the support. The sensing disc and the slot-shaped photoelectric switch cooperate to detect the rotation angle of the turntable; The valve guide size detection component also includes a slide assembly, which includes a base plate, a side plate, a horizontal slide rail, a horizontal slider, a connecting block, a screw support, a screw and a motor. The horizontal slide rail, the connecting block and the screw support are fixedly mounted on the base plate, the horizontal slider is slidably engaged on the horizontal slide rail, the motor is mounted on the side plate, and its output shaft is drivingly connected to the screw, a nut is installed in the connecting block, the screw is inserted through the nut and the screw support, the horizontal slider and the connecting block are fixedly connected to the mounting seat of the end size detection CCD camera; the valve guide The size detection assembly also includes a height adjustment mechanism, which includes a mounting plate, a vertical slide rail, a vertical slider, a screw, a nut block, a screw mounting seat and a handwheel. The vertical slide rail, the nut block and the screw mounting seat are fixedly mounted on the mounting plate, the vertical slider is slidably engaged on the vertical slide rail, the vertical slider and the nut block are fixedly connected to the bottom plate of the slide assembly, the screw is passed through the nut block and the screw mounting seat, the handwheel is fixedly mounted on the upper end of the screw, the mounting plate is fixedly mounted on two columns, one of which is provided with a height indication scale, and the side plate A pointer is fixedly mounted on the top, and the pointer is aligned with the height indicating scale; the feeding mechanism includes an inclined slide, a baffle and a pressure plate, the baffles are mounted on both sides of the inclined slide, and the distance between them is slightly greater than the length of the valve guide, the pressure plate is suspended above the inclined slide, and its height is set so that the valve guide will not overlap, and the lower end of the inclined slide is close to the turntable so that the valve guide can roll into the slot; the feeding mechanism also includes a width adjustment mechanism for adjusting the distance between the baffles, and the width adjustment mechanism includes an adjustment hand wheel, two synchronous pulleys, a belt, Two screws, four nuts, two bearing seats, four bearings, two mounting plates and four connecting blocks. The two bearing seats are fixedly installed on the lower surface of the inclined slide at intervals. Each screw is installed on the bearing seat through two bearings. Threads with opposite spiral directions are respectively provided near the two ends. The two mounting plates are respectively located on both sides of the bearing seat. The nut is fixedly installed in the mounting plate and meshes with the threaded part of the screw. The synchronous pulley is fixedly installed on one end of the screw. The belt is wrapped around the two synchronous pulleys. The adjusting hand wheel is drivingly connected to one of the synchronous pulleys. One end of the connecting block is fixed to the mounting plate, and the other end is fixed to the baffle.

2. The valve guide size detection device according to claim 1, characterized in that: The discharging mechanism includes a pushing mechanism, a qualified product discharging mechanism and a rejected product discharging mechanism, the pushing mechanism includes a push rod and a push rod driving device, the push rod is located between the two circular plates of the turntable, and is used to push the valve guide that has passed the inspection to the feed end of the qualified product discharging mechanism, the rejected product discharging mechanism includes a dividing hopper, a dividing motor and a rejected product discharging chute, the dividing hopper is fixedly mounted on the output shaft of the dividing motor, and is located below the discharging station of the turntable, the rejected product discharging chute is arranged below the dividing hopper, and is provided with a plurality of sub-chute separated from each other, each sub-chute corresponds to a rejected product with a defect, and the dividing motor rotates the dividing hopper to the corresponding sub-chute according to the inspection result.

3. The valve guide size detection device according to claim 2, characterized in that: An opening is provided at the lower end of the sub-slide, and the defective product container is located below the opening.

4. The valve guide size detection device according to claim 2, characterized in that: The qualified product discharging mechanism includes an inclined slide, a baffle and a pressure plate. The upper end of the inclined slide is close to the turntable to receive the valve guide pushed out of the turntable by the push rod. The baffle is installed on both sides of the inclined slide, and the distance between them is slightly larger than the length of the valve guide. The pressure plate is suspended above the inclined slide, and its height is set so that the valve guides will not overlap.

5. The valve guide size detection device according to claim 4, characterized in that: The qualified product discharging mechanism further comprises a thumbwheel and a driving motor for driving the thumbwheel to rotate, and the thumbwheel is arranged at the discharging end of the inclined slideway.

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