A powder metallurgy product profile detection fixture

Abstract

The present invention relates to the field of contour detection jigs, and in particular to a powder metallurgy product contour detection jig, comprising several supporting legs, wherein rectangular frame plates are provided on the upper ends of the supporting legs, conveyor belts are provided between the rectangular frame plates, and a structural groove is provided in the middle of the conveyor belt, strip frame plates are symmetrically provided on the rectangular frame plates, a reciprocating screw rod is rotatably passed through the strip frame plates, and a lifting unit for lifting parts is provided on the strip frame plates, a gear or a rack can be clamped by a clamping member, and the spacing between the clamping teeth and the size of the side teeth can be adaptively changed so that the clamping member can more fully engage and limit the gear or the rack, and the parts can be transported by placing the parts on the conveyor belt through the rectangular frame, the gear in the limiting circular groove, and the rack in the strip groove, thereby preventing the parts from shifting during transportation.

Description

Technical Field

[0001] The present invention relates to the field of contour detection jigs, and in particular to a contour detection jig for powder metallurgy products. Background Art

[0002] Currently, the contour accuracy of powder metallurgy products is typically measured by fixing the part in a specific position using a profilometer or coordinate measuring machine (CMM). Existing fixtures ensure part stability during measurement, but they suffer from a significant drawback: after clamping the part, the clamped area is obscured by the fixing plate, preventing the test device from directly measuring that area. While manually adjusting the part's angle can cover the entire measurement, this process can compromise the accuracy of the clamping, requiring the test device to recalibrate the angle. This increases redundant operations and measurement time, impacting both efficiency and accuracy.

[0003] Existing technology, such as patent publication number CN211205153U, provides a jig for inspecting the contour of powder metallurgy products. This jig utilizes a pneumatic cylinder, a fixed plate, an upper inspection module, and a lower inspection module to automatically clamp and position parts. The cylinder is controlled by a pneumatic switch mounted on the base, improving measurement accuracy and efficiency. However, while this technology has addressed some existing issues, there are still areas that require further optimization to better meet actual inspection needs.

[0004] 1. When dealing with different types of products, the above-mentioned existing technologies require customized fixtures to ensure accurate positioning, resulting in high production and maintenance costs and reduced economic benefits. Secondly, for products with certain special structures, especially parts with hollow structures inside or requiring in-depth probe inspection, the traditional mold clamping method cannot meet the inspection requirements because the mold may hinder the effective insertion of the probe, affecting the accuracy and comprehensiveness of the inspection.

[0005] 2. The above-mentioned existing technology can realize the detection of part contour under certain conditions, but there are significant limitations in large-scale production applications. First, manually placing the parts into the detection device is not only labor-intensive and inefficient, but also difficult to meet the high efficiency requirements of the production line, especially in mass production. Manual operation is prone to errors and cannot achieve automatic acceptance of parts, which limits the universality of the detection fixture; secondly, during the detection process, the upper and lower molds are usually contact-detected by air pressure pressing, and their measurement accuracy is limited. For parts that are smaller than the mold, it is difficult to accurately capture the difference in their contour dimensions; in addition, if there are burrs or contaminants on the surface of the mold, after the part enters the detection table, the part may be displaced or detached due to friction between the inner and outer surfaces of the mold, further affecting the detection accuracy.

[0006] Therefore, based on the above-stated viewpoint, there is still room for improvement in the existing contour detection fixture. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides a powder metallurgy product contour detection jig, comprising several supporting legs, a rectangular frame plate is provided at the upper end of the supporting legs, a conveyor belt is provided between the rectangular frame plates, and a structural groove is provided in the middle of the conveyor belt, strip frame plates are symmetrically provided on the rectangular frame plates, a reciprocating screw rod is rotatably provided on the strip frame plates, and a lifting unit for lifting parts is provided on the strip frame plates.

[0008] The lifting unit comprises a lifting frame plate which is slidably arranged on the inner side wall of the strip frame plate and is threadedly connected to the corresponding reciprocating screw rod; a vertical plate is slidably arranged on the inner side wall of the lifting frame plate.

[0009] Preferably, the lifting unit also includes an adjusting screw that is rotatably passed through the lifting frame and threadedly connected to the vertical plate. The adjusting screw is located on one end outside the inner wall of the lifting frame and is sleeved with an adjusting circular plate, and an electric push rod is rotatably passed through the vertical plate. The telescopic end of the electric push rod passes through one side outer wall of the vertical plate and is provided with a clamping plate. A clamping groove is provided in the clamping plate, and a clamping member for clamping parts is provided in the clamping groove.

[0010] Preferably, the clamping member includes several sliding blocks slidably arranged in the clamping groove, and the sliding blocks are distributed at equal intervals. A reset push spring is commonly arranged between two adjacent sliding blocks, and a reset push spring is also commonly arranged between the sliding block and the inner side wall of the clamping groove. A clamping tooth is arranged on the side of the sliding block close to the structural groove.

[0011] Preferably, a sliding cavity is provided in the clamping teeth, a partition plate is provided in the middle of the sliding cavity, two side teeth separated by the partition plate are slidingly provided in the sliding cavity, and a push spring is provided between the side teeth and the partition plate.

[0012] Preferably, a driving assembly for driving the electric push rod to rotate is provided on the strip frame plate, the driving assembly includes a bending plate provided on the strip frame plate, a driving rack is provided on the bending plate, a ratchet tooth sleeve is provided on the shell of the electric push rod, and a driving outer gear ring corresponding to the driving rack is provided on the outer side of the ratchet tooth, and contact plates symmetrically distributed up and down are provided on the clamping plate, and the contact plate on one side is in contact with the upper end of the conveyor belt.

[0013] Preferably, the lower end of the strip frame plate passes through the outer wall of the rectangular frame plate and is provided with a supporting unit for supporting the bottom of the part. The supporting unit includes a strip plate that is commonly arranged between the strip frame plates. A rotating screw is threaded through the strip plate, and the vertical end of the rotating screw is passed through the structural groove, and a supporting plate is rotatably sleeved on the end of the rotating screw, and the supporting plate is used to support the bottom of the part.

[0014] Preferably, the support plate is symmetrically provided with limiting shafts, and two limiting plates corresponding to the limiting shafts are provided on both sides of the strip plate, and one side of the limiting shaft slides through one side of the limiting plate and is sleeved with a limiting disk.

[0015] Preferably, a limiting assembly is provided on the conveyor belt for limiting the transportation of gears and racks. The limiting assembly includes several limiting circular grooves opened on the conveyor belt. The limiting circular grooves are evenly distributed along the extension section of the conveyor belt and are connected with the structural grooves. The cross-section of the limiting circular grooves is curved and the diameter gradually decreases.

[0016] Preferably, the conveyor belt is further provided with a plurality of strip grooves interpenetrating with the limiting circular groove, and the strip grooves are also interpenetrating with the structural groove.

[0017] Preferably, a protection box is provided on the rectangular frame plate, rectangular grooves corresponding to the conveyor belt are provided on both sides of the protection box, and a detection device for detecting the contour of the part is provided on the top wall of the protection box.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. The present invention can clamp a gear or a rack through a clamping member, and can also adaptively change the spacing between the clamping teeth and the size of the side teeth, so that the clamping member can more fully engage and limit the gear or rack. It can also transport the parts by placing them on a conveyor belt through a rectangular frame, placing the gear in a limiting circular groove, and placing the rack in a strip groove, thereby preventing the parts from shifting during transportation.

[0020] 2. The present invention detects a partial area of a part through a detection device. After the detection is completed, the lifting unit belt drives the part to rise through the clamping part, and then the driving component drives the part to flip 180 degrees through the clamping part, so that the side of the part that has not been inspected is flipped to correspond to the detection device.

[0021] 3. After the part is flipped and lowered, the supporting unit of the present invention can support the bottom of the part and push the part upward, so that the clamping member can clamp the area of the part that has been inspected, and the clamped area can be exposed to the inspection device for inspection, further improving the applicability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the lifting unit of the present invention.

[0025] Figure 3 It is a structural schematic diagram of the clamping member of the present invention.

[0026] Figure 4 It is a planar cross-sectional view of the clamping member of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the drive assembly of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the supporting unit of the present invention.

[0029] Figure 7 It is a structural schematic diagram of the limiting component of the present invention.

[0030] Figure 8 It is a planar cross-sectional view of the limiting assembly of the present invention.

[0031] Figure 9 It is a structural schematic diagram of the protection box of the present invention.

[0032] Figure 10 It is a structural schematic diagram of the drive unit of the present invention.

[0033] Figure 11 This invention Figure 10 A magnified view of part of the structure at point A.

[0034] In the figure, 1. Support leg; 10. Rectangular frame plate; 11. Conveyor belt; 12. Structural groove; 13. Strip frame plate; 14. Reciprocating screw; 2. Lifting unit; 20. Lifting frame plate; 21. Vertical plate; 22. Adjusting screw; 23. Adjusting circular plate; 24. Electric push rod; 25. Clamping plate; 3. Clamping member; 30. Sliding block; 31. Return spring; 32. Clamping tooth; 33. Sliding cavity; 34. Partition plate; 35. Side tooth; 36. Push spring; 4. Driving assembly; 40 , bending plate; 41, driving rack; 42, ratchet teeth; 43, driving outer gear ring; 44, contact plate; 5, supporting unit; 50, strip plate; 51, rotating screw; 52, supporting plate; 53, limiting shaft; 54, limiting plate; 6, limiting assembly; 60, limiting circular groove; 61, strip groove; 7, protective box; 70, rectangular groove; 71, detection device; 8, driving unit; 80, internal gear; 81, rotating ring; 82, transmission belt; 83, driving tooth; 84, tooth groove. DETAILED DESCRIPTION

[0035] The following combination Figures 1 to 11 The embodiments of the present invention are described in detail.

[0036] The embodiment of the present application discloses a powder metallurgy product contour detection fixture, which explains that the present application is mainly suitable for post-production detection of gears and racks, and can firmly clamp both sides thereof, and ensure stability during the detection process by cooperating with the outer teeth of the gears or racks. More importantly, the fixture can automatically adjust the spacing and size of the teeth on the clamping device according to the specifications of the outer teeth of the gears and racks, thereby achieving adaptive clamping. After completing the detection of one side, the part can also be conveniently flipped to expose the other side for detection, thereby achieving full contour detection of the part, improving the comprehensiveness and accuracy of the detection.

[0037] Example 1: Reference Figure 1 As shown, it includes several supporting legs 1, rectangular frame plates 10, conveyor belts 11, structural grooves 12, strip frame plates 13, reciprocating screw rods 14 and lifting units 2. A rectangular frame plate 10 is provided on the upper end of the supporting leg 1, and the supporting leg 1 is used to support the rectangular frame plate 10; a conveyor belt 11 is provided between the rectangular frame plates 10, and the conveyor belt 11 is a well-known technology, and its purpose is to transmit gears and racks, and in the subsequent implementation process, the gears and racks are referred to as parts.

[0038] A structural groove 12 is opened in the middle of the conveyor belt 11, that is, the belt on the conveyor belt 11 is divided into two by the structural groove 12, and the belt divided into two supports the parts, and the width of the structural groove 12 is always smaller than the width of the parts; strip frame plates 13 are symmetrically arranged on the rectangular frame plate 10, and a reciprocating screw rod 14 is rotatably passed through the strip frame plate 13, and a lifting unit 2 for lifting the parts is provided on the strip frame plate 13. When driven by external force, the reciprocating screw rod 14 can rotate in the strip frame plate 13, so that the lifting unit 2 can move up and down on the inner wall of the strip frame plate 13.

[0039] Reference Figure 2 and Figure 3 As shown, the lifting unit 2 is used to lift the parts; specifically, the lifting unit 2 includes a lifting frame plate 20, a vertical plate 21, an adjusting screw rod 22, an adjusting circular plate 23, an electric push rod 24, a clamping plate 25 and a clamping member 3. The lifting frame plate 20 is slidably set on the inner wall of the strip frame plate 13 and is threadedly connected to the corresponding reciprocating screw rod 14. A vertical plate 21 is slidably set on the inner wall of the lifting frame plate 20, that is, the reciprocating screw rod 14 can drive the lifting frame plate 20 to move up and down under the limit of the inner wall of the strip frame plate 13 when it rotates, and the lifting frame plate 20 can synchronously drive the vertical plate 21 to move synchronously with it.

[0040] An adjusting screw rod 22 is rotatably provided in the lifting frame 20 and is threadably connected to the vertical plate 21. An adjusting circular plate 23 is sleeved on one end of the adjusting screw rod 22 located outside the inner wall of the lifting frame 20. The adjusting circular plate 23 can drive the adjusting screw rod 22 to rotate, and the adjusting screw rod 22 can drive the vertical plate 21 to move under the limit of the inner wall of the lifting frame 20 during the rotation process; an electric push rod 24 is rotatably provided on the vertical plate 21, and a clamping plate 25 is provided on the telescopic end of the electric push rod 24 through the outer wall of one side of the vertical plate 21. An opening is provided in the clamping plate 25 A clamping groove is provided, in which a clamping member 3 is provided. The electric push rod 24 can drive the corresponding clamping plate 25 to move. When the two clamping plates 25 move in relative directions, the parts can be clamped by the corresponding clamping member 3. In actual use, the initial spacing between the clamping members 3 can be adjusted in advance according to the size specifications of the parts by rotating the adjustment circular plate 23, so that the electric push rod 24 can shorten the pushing stroke of the clamping member 3, thereby increasing the clamping speed and reducing the wear rate of the telescopic end of the electric push rod 24.

[0041] Reference Figure 3 and Figure 4 As shown, the clamping member 3 is used to clamp the parts; specifically, the clamping member 3 includes a sliding block 30, a return spring 31, a clamping tooth 32, a sliding cavity 33, a partition plate 34, a side tooth 35 and a push spring 36, several sliding blocks 30 are slidably arranged inside the clamping groove, and several sliding blocks 30 are distributed at equal intervals, a return spring 31 is commonly provided between two adjacent sliding blocks 30, and a return spring 31 is also commonly provided between the sliding block 30 and the inner side wall of the clamping groove, the sliding block 30 is provided with a clamping tooth 32 on the side close to the structural groove 12, the sliding block 30 can slide in the clamping groove, and the corresponding return spring 31 is in the initial state, the sliding block 3 The spacing between them is fixed. When the gear is driven by the conveyor belt 11 to correspond to the clamping teeth 32, the corresponding electric push rod 24 pushes the clamping plate 25 to move toward the gear or rack, and the clamping teeth 32 will mesh with the teeth on the outside of the gear. Since the tooth spacing of gears of different specifications is different, the clamping teeth 32 will reversely drive the sliding block 30 to slide adaptively in the clamping groove during meshing, so as to indirectly limit the meshing of the gear by meshing. If the rack has teeth on only one side, the clamping teeth 32 on the corresponding clamping plate 25 will mesh with it, and the clamping teeth 32 on the other side will stick to the outer surface of the rack to clamp it.

[0042] A sliding cavity 33 is provided in the clamping tooth 32, and a partition plate 34 is provided in the middle of the sliding cavity 33. Two side teeth 35 separated by the partition plate 34 are slidingly provided in the sliding cavity 33, and a push spring 36 is provided between the side teeth 35 and the partition plate 34. When meshing with the parts, if the meshing is incomplete or the tooth spacing of some parts is too large or too small, the parts will fall off. Therefore, after the clamping tooth 32 is engaged with the parts, the side teeth 35 will be pushed by the corresponding push spring 36 to fully fit with the teeth on the outside of the part, and according to the size of the spacing of the teeth 35 on the outside of the part, the side teeth 35 can adaptively slide in the corresponding sliding cavity 33.

[0043] Reference Figure 5 As shown, the strip frame plate 13 is provided with a driving assembly 4 for driving the electric push rod 24 to rotate; specifically, the driving assembly 4 includes a bending plate 40, a driving rack 41, a ratchet tooth 42, a driving outer gear ring 43 and a contact plate 44, the bending plate 40 is provided at the upper end of the strip frame plate 13, the driving rack 41 is provided on the bending plate 40, the electric push rod 24 shell body is provided with a ratchet tooth 42, and the outer side of the ratchet tooth 42 is provided with a driving outer gear ring 43 corresponding to the driving rack 41, that is, the ratchet tooth 42 can Drive the electric push rod 24 to rotate. When the clamping member 3 clamps the part, after the contour of one side of the part is detected, the part is driven to rise indirectly through the clamping member 3 through the reciprocating screw 14. During the movement, the ratchet teeth 42 will engage with the driving rack 41, and then the driving rack 41 drives the electric push rod 24 to rotate by driving the outer gear ring 43. When the lifting frame plate 20 moves to the top of the strip frame plate 13, the clamping member 3 just drives the part to rotate one hundred and eighty degrees through the clamping member 3 to complete the flipping of the part.

[0044] Afterwards, the clamping member 3 is indirectly driven by the lifting frame plate 20 and descends. Due to the unidirectional drive of the ratchet teeth 42, the driving rack 41 continues to mesh with the driving outer gear ring 43 and drives it to rotate in the opposite direction. Therefore, the electric push rod 24 does not rotate at this time.

[0045] The clamping plate 25 is provided with contact plates 44 symmetrically distributed up and down, and the contact plate 44 on one side is in contact with the upper end of the conveyor belt 11. That is, when the clamping member 3 drives the part to complete the flip and descend to the initial position, the angle of the clamping member 3 may still deviate. At this time, after the contact plate 44 contacts the outer side of the conveyor belt 11, the clamping plate 25 is reversed.

[0046] Reference Figure 6As shown, the lower end of the strip frame plate 13 passes through the outer wall of the rectangular frame plate 10 and is provided with a supporting unit 5 for supporting the bottom of the part; specifically, the supporting unit 5 includes a strip plate 50, a rotating screw 51, a supporting plate 52, a limit shaft 53 and a limit plate 54. The strip plate 50 is jointly arranged between the strip frame plates 13. A rotating screw 51 is threadedly passed through the strip plate 50, and the vertical end of the rotating screw 51 is passed between the structural grooves 12, and a supporting plate 52 is rotatably sleeved on the end of the rotating screw 51. The supporting plate 52 is used to support the bottom of the part, that is, when the rotating screw 51 is driven by external force to rotate on the strip plate 50, it can drive the supporting plate 52 to move in the up and down directions.

[0047] A limiting shaft 53 is symmetrically arranged on the supporting plate 52, and two limiting plates 54 corresponding to the limiting shaft 53 are also arranged on both sides of the strip plate 50, and one side of the limiting shaft 53 slides through one side of the limiting plate 54 and is sleeved with a limiting disk, that is, when the supporting plate 52 moves in the up and down directions, it can drive the limiting shaft 53 to move synchronously, and when the limiting shaft 53 moves, the supporting plate 52 can also be limited by the limiting plate 54 to prevent it from deflecting.

[0048] During actual use, after the clamping member 3 drives the part to complete the flipping and descend to the initial position, since the part has only completed the flipping and its clamped part is still blocked, the screw rod 51 is rotated at this time to drive the support plate 52 to move upward to support the part, and then the electric push rod 24 no longer clamps the part, and the support plate 52 drives the part to rise a certain distance. After that, the clamping member 3 continues to clamp the area of the part that has completed contour detection, and the originally clamped area leaks out, so that contour detection can be performed. After the detection is completed, the support plate 52 drives the part to descend, and the part is placed on the conveyor belt 11 again, and the part that has completed the detection is moved away by the conveyor belt 11.

[0049] Reference Figure 7 and Figure 8 As shown, a limiting component 6 for limiting the transportation of gears and racks is provided on the conveyor belt 11; specifically, the limiting component 6 includes a limiting circular groove 60 and a strip groove 61, and several limiting circular grooves 60 are opened on the conveyor belt 11. The limiting circular grooves 60 are evenly distributed along the extension section of the conveyor belt 11 and are connected with the structural groove 12. The cross-section of the limiting circular groove 60 is bent and the diameter gradually decreases, that is, the gear can be placed in the limiting circular groove 60 and transported by the conveyor belt 11, and the inner side walls of different diameters in the limiting circular groove 60 are used to limit and accommodate gears of different specifications and sizes.

[0050] The conveyor belt 11 is also provided with several strip grooves 61 that are connected to the limiting circular groove 60. The strip groove 61 is used to place the rack, and the strip groove 61 is also connected to the structural groove 12. The strip groove 61 is used to limit and accommodate the rack. When the limiting circular groove 60 or the strip groove 61 drives the part to correspond to the clamping member 3, the clamping member 3 will clamp the side of the part that is exposed to the corresponding limiting circular groove 60 and the strip groove 61. That is, when the part has completed the inspection, the clamping member 3 will release the limit on the part, so that the part falls into the corresponding limiting circular groove 60 or the strip groove 61.

[0051] Reference Figure 9 As shown, it includes a protective box 7, a rectangular groove 70 and a detection device 71. The protective box 7 is provided on the rectangular frame plate 10. Rectangular grooves 70 corresponding to the conveyor belt 11 are opened on both sides of the protective box 7, and a detection device 71 for detecting the contour of the part is provided on the top wall of the protective box 7.

[0052] The parts are placed in the limiting circular groove 60 or the strip groove 61 on the conveyor belt 11 through the rectangular groove 70 on one side, and the protective box 7 is used to protect the device. When the clamping member 3 clamps the part, the detection device 71 will perform contour detection on the part and its corresponding part. The detection device 71 is a well-known technology, so it will not be described in detail.

[0053] Example 2: Reference Figure 10 and Figure 11 As shown, on the basis of embodiment 1, in order to realize that a single driving device provides a rotational force for the reciprocating screw 14 and the rotating screw 51 to drive the lifting unit 2 and the supporting unit 5 to operate, a driving unit 8 is provided at the lower end of the strip frame plate 13; specifically, the driving unit 8 includes an internal gear 80, a rotating ring 81, a transmission belt 82, a driving tooth 83 and a tooth groove 84, and one side of the two reciprocating screws 14 passes through the outer wall of the strip frame plate 13 and is connected by a belt drive, that is, the two reciprocating screws 14 can be synchronously rotated by a belt drive; the reciprocating screw 14 on one side and the rotating screw 51 on the other side can be synchronously rotated by a belt drive. An internal gear 80 is sleeved on the outside of the rod 51, and two symmetrically distributed rotating rings 81 are rotatably sleeved on the outside of the internal gear 80. A transmission belt 82 is commonly sleeved between the rotating rings 81 on the two internal gears 80, that is, in the initial state, when the transmission belt 82 rotates, it will drive the rotating ring 81 to rotate around the corresponding reciprocating screw 14 and the outside of the rotating screw 51; and the inner side of the transmission belt 82 is provided with a plurality of driving teeth 83 evenly distributed along its extension section, and the outer side of the transmission belt 82 is provided with a plurality of tooth grooves 84 distributed along its extension section, and the driving teeth 83 correspond to the gap between the two rotating rings 81.

[0054] That is, the external gear is engaged with the tooth groove 84 on the outer side of the transmission belt 82, and the transmission belt 82 is driven to move. When the driving teeth 83 on the transmission belt 82 are engaged with the internal gear 80 on the outer side of the reciprocating screw 14, and the reciprocating screw 14 is driven to rotate, the clamping member 3 indirectly drives the part to rise and flip, and then the transmission belt 82 moves in the opposite direction, and indirectly drives the reciprocating screw 14 to rotate in the opposite direction through the driving teeth 83, so that the clamping member 3 drives the part to descend to the initial position, and then the transmission belt 82 continues to move in the opposite direction so that the driving teeth 83 are engaged with the internal gear 80 on the outer side of the rotating screw 51, and indirectly drives the supporting plate 52 to support the part through the rotating screw 51, and drives the part to rise to a certain distance. After the part is detected, the transmission belt 82 rotates forward at this time, so that the supporting plate 52 drives the part to move to the corresponding limiting circular groove 60 or strip groove 61.

[0055] During operation: First, the parts are placed on the conveyor belt 11 through the rectangular groove 70, the gear is placed in the limiting circular groove 60, and the rack is placed in the strip groove 61, and then the conveyor belt 11 transports the parts.

[0056] Step 2: The outer side of the part is engaged and clamped by the clamping member 3. After the part is clamped, a partial area of the part is inspected by the detection device 71. After the inspection is completed, the lifting unit 2 drives the part to rise through the clamping member 3, and then the driving component 4 drives the clamping member 3 to turn the part one hundred and eighty degrees, so that the side of the part that has not been inspected is turned to correspond to the detection device 71.

[0057] Step 3: After the part is flipped and lowered, the supporting unit 5 can support the bottom of the part and push the part upward, so that the clamping member 3 can clamp the area of the part that has been inspected, and the clamped area can be exposed to the inspection device 71 for inspection, further improving the applicability of the present invention.

[0058] Step 4: After the test is completed, the parts are moved back into the corresponding limiting circular groove 60 or strip groove 61, and then the conveyor belt 11 is used to transport the inspected parts out of the device.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive.

[0060] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A powder metallurgy product contour detection jig, comprising a plurality of support legs, with a rectangular frame plate provided on the upper end of the support legs, characterized in that: A conveyor belt is provided between the rectangular frame plates, and a structural groove is provided in the middle of the conveyor belt. Strip frame plates are symmetrically provided on the rectangular frame plates, a reciprocating screw rod is rotatably provided on the strip frame plates, and a lifting unit for lifting parts is provided on the strip frame plates; The lifting unit includes a lifting frame plate that is slidably arranged on the inner side wall of the strip frame plate and is threadedly connected to the corresponding reciprocating screw rod, and a vertical plate is slidably arranged on the inner side wall of the lifting frame plate; The lifting unit also includes an adjusting screw that is rotatably inserted into the lifting frame and threadedly connected to the vertical plate. An adjusting circular plate is sleeved on one end of the adjusting screw located outside the inner wall of the lifting frame, and an electric push rod is rotatably inserted into the vertical plate. The telescopic end of the electric push rod passes through the outer wall of one side of the vertical plate and is provided with a clamping plate. A clamping groove is provided in the clamping plate, and a clamping member for clamping the part is provided in the clamping groove. The clamping member includes a plurality of sliding blocks slidably arranged in the clamping groove, and the plurality of sliding blocks are distributed at equal intervals, a reset spring is commonly provided between two adjacent sliding blocks, and a reset spring is also commonly provided between the sliding block and the inner side wall of the clamping groove, and a clamping tooth is provided on the side of the sliding block close to the structural groove; The lower end of the strip frame plate passes through the outer wall of the rectangular frame plate and is provided with a supporting unit for supporting the bottom of the part. The supporting unit includes a strip plate that is commonly arranged between the strip frame plates. A rotating screw is threaded through the strip plate, and the vertical end of the rotating screw is passed through the structural groove. A supporting plate is rotatably sleeved on the end of the rotating screw, and the supporting plate is used to support the bottom of the part. The conveyor belt is provided with a limiting assembly for limiting the transportation of the gear and the rack. The limiting assembly includes a plurality of limiting circular grooves opened on the conveyor belt. The limiting circular grooves are evenly distributed along the extended section of the conveyor belt and are connected with the structural groove. The cross section of the limiting circular groove is curved and the diameter gradually decreases. The conveyor belt is also provided with a plurality of strip grooves interpenetrating with the limiting circular grooves, and the strip grooves are also interpenetrating with the structural grooves; The clamping parts clamp the gears and racks more fully by changing the spacing of the clamping teeth. The limiting circular grooves and strip grooves limit the gears and racks of different sizes respectively to prevent them from shifting when being transported by the conveyor belt. The parts are supported and moved upward by the supporting assembly so that the clamping area of the parts is exposed for inspection.

2. The powder metallurgy product profile detection jig according to claim 1, characterized in that: A sliding cavity is provided in the clamping teeth, a partition plate is provided in the middle of the sliding cavity, two side teeth separated by the partition plate are slidingly provided in the sliding cavity, and a push spring is provided between the side teeth and the partition plate.

3. The powder metallurgy product profile detection jig according to claim 1, characterized in that: The strip frame plate is provided with a driving assembly for driving the electric push rod to rotate, the driving assembly includes a bending plate arranged on the strip frame plate, a driving rack is arranged on the bending plate, a ratchet tooth sleeve is provided on the electric push rod shell, and a driving outer gear ring corresponding to the driving rack is provided on the outer side of the ratchet tooth, and contact plates symmetrically distributed up and down are provided on the clamping plate, and the contact plate on one side is in contact with the upper end of the conveyor belt.

4. The powder metallurgy product profile detection jig according to claim 1, characterized in that: The support plate is symmetrically provided with limiting shafts, and two limiting plates corresponding to the limiting shafts are provided on both sides of the strip plate, and one side of the limiting shaft slides through one side of the limiting plate and is sleeved with a limiting disk.

5. The powder metallurgy product profile detection jig according to claim 1, characterized in that: A protection box is provided on the rectangular frame plate, rectangular grooves corresponding to the conveyor belts are provided on both sides of the protection box, and a detection device for detecting the contour of the parts is provided on the top wall of the protection box.

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