Powder metallurgy product profile tolerance detection jig

Abstract

The invention relates to the field of profile tolerance detection jigs, in particular to a powder metallurgy product profile tolerance detection jig which comprises a plurality of supporting legs, rectangular frame plates are arranged at the upper ends of the supporting legs, a conveying belt is arranged between the rectangular frame plates, a construction groove is formed in the middle of the conveying belt, and strip-shaped frame plates are symmetrically arranged on the rectangular frame plates. A reciprocating screw rod is rotationally arranged on the strip-shaped frame plate in a penetrating mode, a lifting unit used for lifting a part is arranged on the strip-shaped frame plate, a gear or a rack can be clamped through the clamping piece, the distance between the clamping teeth can be changed in a self-adaptive mode, and the size of the side teeth can be changed. By arranging the clamping pieces on the conveying belt, the clamping pieces can conduct meshing limiting on the gears or the racks more sufficiently, the parts can be conveyed by placing the parts on the conveying belt through the rectangular frame, placing the gears in the limiting circular grooves and placing the racks in the strip-shaped grooves, and the parts are prevented from deviating in the conveying process.

Description

Technical Field

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

[0002] At present, the contour detection of powder metallurgy products is usually carried out by fixing the parts in a specific position and then measuring them using measuring instruments such as a profilometer or a three-dimensional coordinate measuring machine. The existing fixture can ensure the stability of the parts during the measurement process, but there is a significant disadvantage: after clamping the parts, the clamped area of ​​the parts is blocked by the fixed plate, resulting in the inability of the test device to directly measure the area. Although the manual adjustment of the part angle can cover the complete measurement, the adjustment process may damage the accuracy of the clamping, requiring the detection device to recalibrate the angle, which increases redundant operations and measurement time, affecting the measurement efficiency and accuracy.

[0003] In the prior art, for example, the patent with announcement number CN211205153U provides a powder metallurgy product contour detection fixture, which realizes automatic clamping and positioning of parts by setting a cylinder, a fixing plate, an upper detection module and a lower detection module, and controls the cylinder through a pneumatic switch installed on the base, thereby improving the accuracy and efficiency of measurement. However, although this technology has improved some of the original problems, there are still aspects that need to be further optimized to better meet actual detection needs.

[0004] 1. When dealing with different types of products, the above-mentioned prior art requires customized fixtures to ensure accurate positioning, resulting in higher 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 detection, the traditional mold clamping method cannot meet the detection requirements, because the mold may hinder the effective insertion of the probe, affecting the accuracy and comprehensiveness of the detection.

[0005] 2. The above-mentioned prior art can realize the detection of part contour under certain conditions, but there are significant limitations in large-scale production applications. First, manually placing 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 contacted and detected by air pressure pressing, and the measurement accuracy is limited. For parts 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 the friction between the inner and outer surfaces of the mold, further affecting the detection accuracy.

[0006] Therefore, under the viewpoints stated above, there is still room for improvement in the existing profile detection fixtures. Summary of the Invention

[0007] To solve the above problems, the present invention provides a profile detection fixture for powder metallurgy products, including several support legs. A rectangular frame plate is provided at the upper end of the support legs. A conveyor belt is arranged between the rectangular frame plates, and a structure groove is formed in the middle of the conveyor belt. Strip-shaped frame plates are symmetrically arranged on the rectangular frame plates. A reciprocating lead screw is rotatably penetrated through the strip-shaped frame plates, and a lifting unit for lifting the parts is arranged on the strip-shaped frame plates.

[0008] The lifting unit includes a lifting frame plate slidably arranged on the inner side wall of the strip-shaped frame plate and threadedly connected to the corresponding reciprocating lead screw. A vertical plate is slidably arranged on the inner side wall of the lifting frame plate.

[0009] Preferably, the lifting unit further includes an adjusting lead screw rotatably penetrated through the lifting frame plate and threadedly connected to the vertical plate. One end of the adjusting lead screw located outside the inner side wall of the lifting frame plate is sleeved with an adjusting circular plate. An electric push rod is rotatably penetrated through the vertical plate. A clamping plate is arranged at the telescopic end of the electric push rod passing through the outer wall of one side of the vertical plate. A clamping groove is formed in the clamping plate, and a clamping member for clamping the parts is arranged in the clamping groove.

[0010] Preferably, the clamping member includes several sliding blocks slidably arranged in the clamping groove, and the several sliding blocks are equally spaced. A reset push spring is commonly arranged between adjacent two 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 structure groove.

[0011] Preferably, a sliding cavity is formed in the clamping tooth, a partition plate is arranged in the middle of the sliding cavity, two side teeth separated by the partition plate are slidably arranged in the sliding cavity, and a pushing spring is commonly arranged between the side tooth and the partition plate.

[0012] Preferably, a driving component for driving the electric push rod to rotate is arranged on the rectangular frame plate. The driving component includes a bent plate arranged on the strip-shaped frame plate. A driving rack is arranged on the bent plate. A ratchet and pawl are sleeved on the shell of the electric push rod, and a driving external tooth ring corresponding to the driving rack is arranged outside the ratchet and pawl. Contact plates are symmetrically arranged up and down on the clamping plate, and one of the contact plates is in contact with the upper end of the conveyor belt.

[0013] Preferably, the lower end of the strip-shaped frame plate passes through the outer wall of the rectangular frame plate and a supporting unit for supporting the bottom of the parts is arranged. The supporting unit includes a strip-shaped plate commonly arranged between the strip-shaped frame plates. A rotating lead screw is threadedly penetrated through the strip-shaped plate, and the vertical end of the rotating lead screw penetrates between the structure grooves. A supporting plate is rotatably sleeved at the end of the rotating lead screw, and the supporting plate is used for supporting the bottom of the parts.

[0014] Preferably, limiting shafts are symmetrically arranged on the supporting plate, and two limiting plates corresponding to the limiting shafts are further arranged on both sides of the strip-shaped plate. One side of the limiting shaft slidably penetrates through one side of the limiting plate and is sleeved with a limiting disc.

[0015] Preferably, a limiting assembly for limiting the transportation of the gear and the rack is arranged on the conveyor belt. 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 communicate with the structure groove. The cross section of the limiting circular groove is bent and the diameter gradually decreases.

[0016] Preferably, several strip-shaped grooves communicating with the limiting circular grooves are further opened on the conveyor belt, and the strip-shaped grooves also communicate with the structure groove.

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

[0018] In summary, the present application includes at least one of the following beneficial technical effects: First, the present invention can clamp the gear or the rack through the clamping member, and can also adaptively change the distance between the clamping teeth and change the size of the side teeth, so that the clamping member can more fully engage and limit the gear or the rack. The parts can be transported by placing the parts in the rectangular frame on the conveyor belt, placing the gears in the limiting circular grooves, and placing the racks in the strip-shaped grooves, preventing the parts from shifting during transportation.

[0019] Second, the present invention detects a part of the area of the part through the detection device. After the detection is completed, the lifting unit drives the part to rise through the clamping member, and then drives the part to flip 180 degrees through the clamping member under the drive of the drive assembly, so that the untested side of the part is flipped to correspond to the detection device.

[0020] Third, after the part is flipped and lowered, the supporting unit can support the bottom of the part and push the part to move upward, so that the clamping member can clamp the area of the part that has been tested, and the clamped area can be exposed for detection by the detection device, further improving the applicability of the present invention. Description of the Drawings

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the main body structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the lifting unit of the present invention.

[0024] Figure 3 It is a schematic structural diagram of the clamping member of the present invention.

[0025] Figure 4 It is a plane cross-sectional view of the clamping member of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the driving assembly of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the supporting unit of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the limiting assembly of the present invention.

[0029] Figure 8 It is a plane cross-sectional view of the limiting assembly of the present invention.

[0030] Figure 9 It is a schematic structural diagram of the protection box of the present invention.

[0031] Figure 10 It is a schematic structural diagram of the driving unit of the present invention.

[0032] Figure 11 It is the present invention Figure 10 Partial enlarged view of part A in

[0033] In the figure, 1, support leg; 10, rectangular frame plate; 11, conveyor belt; 12, structural groove; 13, strip-shaped frame plate; 14, reciprocating lead screw; 2, lifting unit; 20, lifting frame plate; 21, vertical plate; 22, adjusting lead screw; 23, adjusting circular plate; 24, electric push rod; 25, clamping plate; 3, clamping member; 30, sliding block; 31, reset push spring; 32, clamping teeth; 33, sliding cavity; 34, partition plate; 35, side teeth; 36, pushing spring; 4, driving assembly; 40, bent plate; 41, driving rack; 42, ratchet and pawl; 43, driving external gear ring; 44, contact plate; 5, supporting unit; 50, strip-shaped plate; 51, rotating lead screw; 52, supporting plate; 53, limiting shaft; 54, limiting plate; 6, limiting assembly; 60, limiting circular groove; 61, strip-shaped groove; 7, protection box; 70, rectangular groove; 71, detection device; 8, driving unit; 80, internal gear; 81, rotating ring; 82, transmission belt; 83, driving teeth; 84, tooth groove. Detailed Description of the Invention

[0034] The following is a detailed description of the embodiments of the present invention in conjunction with Figures 1 to 11 for the embodiments of the present invention.

[0035] An embodiment of the present application discloses a fixture for detecting the profile of a powder metallurgy product. It should be noted that this application is mainly applicable to the post-production inspection of gears and racks, capable of firmly clamping both sides thereof, and ensuring the stability during the inspection process through the cooperation with the outer teeth of the gear or rack. More importantly, this 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 gear and rack to achieve adaptive clamping. After completing the inspection of one side, it can also conveniently flip the part to expose the other side for inspection, thereby realizing the comprehensive profile inspection of the part and improving the comprehensiveness and accuracy of the inspection.

[0036] Embodiment 1: Refer to Figure 1 As shown in the figure, it includes several support legs 1, a rectangular frame plate 10, a conveyor belt 11, a structure groove 12, a strip-shaped frame plate 13, a reciprocating lead screw 14, and a lifting unit 2. The upper end of the support leg 1 is provided with a rectangular frame plate 10, and the support leg 1 is used to support the rectangular frame plate 10; a conveyor belt 11 is arranged between the rectangular frame plates 10. The conveyor belt 11 is a well-known technology, and its purpose is to convey gears and racks, and in the subsequent implementation process, gears and racks are simply referred to as parts.

[0037] A structure 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 structure groove 12, and the two divided belts support the part. The width of the structure groove 12 is always smaller than the width of the part; strip-shaped frame plates 13 are symmetrically arranged on the rectangular frame plate 10. A reciprocating lead screw 14 is rotatably penetrated through the strip-shaped frame plate 13, and a lifting unit 2 for lifting the part is arranged on the strip-shaped frame plate 13. When the reciprocating lead screw 14 is driven by an external force, it can rotate within the strip-shaped frame plate 13, so that the lifting unit 2 can move up and down on the inner wall of the strip-shaped frame plate 13.

[0038] Refer to Figure 2 and Figure 3 As shown in the figure, that is, the lifting unit 2 for lifting the part; specifically, the lifting unit 2 includes a lifting frame plate 20, a vertical plate 21, an adjusting lead screw 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 arranged on the inner side wall of the strip-shaped frame plate 13 and is in threaded connection with the corresponding reciprocating lead screw 14. A vertical plate 21 is slidably arranged on the inner side wall of the lifting frame plate 20, that is, when the reciprocating lead screw 14 rotates, it can drive the lifting frame plate 20 to move up and down under the limitation of the inner side wall of the strip-shaped frame plate 13, and the lifting frame plate 20 can synchronously drive the vertical plate 21 to move synchronously with it.

[0039] A regulating lead screw 22 which is rotationally inserted through a lifting frame plate 20 and is in threaded connection with a vertical plate 21 is provided. One end of the regulating lead screw 22 located outside the inner side wall of the lifting frame plate 20 is sleeved with a regulating circular plate 23. The regulating circular plate 23 can drive the regulating lead screw 22 to rotate, and during the rotation of the regulating lead screw 22, the vertical plate 21 can be driven to move under the limitation of the inner side wall of the lifting frame plate 20. An electric push rod 24 is rotationally inserted through the vertical plate 21. The telescopic end of the electric push rod 24 passes through the outer wall on one side of the vertical plate 21 and is provided with a clamping plate 25. A clamping groove is formed in the clamping plate 25, and a clamping member 3 is arranged in the clamping groove. The electric push rod 24 can drive the corresponding clamping plate 25 to move. When the two clamping plates 25 move in opposite directions, the corresponding clamping member 3 can clamp the part. And during actual use, according to the size specification of the part, the regulating circular plate 23 can be rotated in advance to adjust the initial distance between the clamping members 3, so that the electric push rod 24 can shorten the pushing stroke of the clamping members 3, making the clamping speed faster and at the same time reducing the wear rate of the telescopic end of the electric push rod 24.

[0040] Referring to Figure 3 and Figure 4 shown, it is the clamping member 3 for clamping the part. Specifically, the clamping member 3 includes a sliding block 30, a reset push spring 31, a clamping tooth 32, a sliding cavity 33, a partition plate 34, a side tooth 35 and a pushing spring 36. Several sliding blocks 30 are slidably arranged inside the clamping groove, and the several sliding blocks 30 are equally spaced. A reset push spring 31 is jointly arranged between two adjacent sliding blocks 30, and a reset push spring 31 is also jointly arranged between the sliding block 30 and the inner side wall of the clamping groove. A clamping tooth 32 is arranged on one side of the sliding block 30 close to the structure groove 12. The sliding block 30 can slide in the clamping groove, and when the corresponding reset push spring 31 is in the initial state, the distance between the sliding blocks 30 is fixed. When the gear is driven by the conveyor belt 11 to correspond to the clamping tooth 32, at this time, when the corresponding electric push rod 24 pushes the clamping plate 25 to move towards the gear or the rack, the clamping tooth 32 will mesh with the teeth on the outer side of the gear. And because the tooth pitches of different specifications of gears are different, when meshing, the clamping tooth 32 will reversely drive the sliding block 30 to adaptively slide in the clamping groove, so as to indirectly limit the meshing of the gear in a meshing manner. And if only one side of the rack has teeth, the clamping tooth 32 on the corresponding clamping plate 25 will mesh with it, and the clamping tooth 32 on the other side will be pressed against the outer side surface of the rack to clamp it.

[0041] A sliding cavity 33 is formed inside the clamping tooth 32. 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 slidably arranged in the sliding cavity 33. A pushing spring 36 is provided between the side teeth 35 and the partition plate 34. When meshing with a part, if the meshing is incomplete or the tooth pitch of some parts is too large or too small, the part will fall off. Therefore, after the clamping tooth 32 meshes with the part, the side teeth 35 will be pushed by the corresponding pushing spring 36 to completely fit the teeth on the outer side of the part, and the side teeth 35 can adaptively slide in the corresponding sliding cavity 33 according to the size of the tooth pitch of the outer side teeth 35 of the part.

[0042] Referring to Figure 5 As shown, a driving assembly 4 for driving the electric push rod 24 to rotate is provided on the strip-shaped frame plate 13; specifically, the driving assembly 4 includes a bent plate 40, a driving rack 41, a ratchet and pawl 42, a driving external gear ring 43 and a contact plate 44. The bent plate 40 is arranged at the upper end of the strip-shaped frame plate 13. The driving rack 41 is arranged on the bent plate 40. The shell of the electric push rod 24 is sleeved with the ratchet and pawl 42, and a driving external gear ring 43 corresponding to the driving rack 41 is arranged outside the ratchet and pawl 42, that is, the ratchet and pawl 42 can drive the electric push rod 24 to rotate. When the clamping member 3 clamps a part, after the contour of one side of the part is detected, at this time, the part is driven to rise indirectly by the reciprocating lead screw 14 through the clamping member 3. During the movement, the ratchet and pawl 42 will mesh with the driving rack 41, and then the driving rack 41 drives the electric push rod 24 to rotate through the driving external gear ring 43. When the lifting frame plate 20 moves to the top of the strip-shaped frame plate 13, at this time, the clamping member 3 just drives the part to rotate 180 degrees through the clamping member 3 to complete the turning over of the part.

[0043] After that, the clamping member 3 is indirectly driven by the lifting frame plate 20 and descends. Due to the one-way driving of the ratchet and pawl 42, at this time, the driving rack 41 continues to mesh with the driving external gear ring 43 and drives it to rotate in the reverse direction. Therefore, the electric push rod 24 will not rotate at this time.

[0044] Contact plates 44 are symmetrically distributed up and down on the clamping plate 25, and one of the contact plates 44 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 flipping and descends to the initial position, the angle of the clamping member 3 may still have a deviation. At this time, after the contact plate 44 contacts the outer side of the conveyor belt 11, the clamping plate 25 is corrected in the reverse direction.

[0045] Referring to Figure 6As shown in the figure, the lower end of the strip-shaped 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-shaped plate 50, a rotating screw rod 51, a supporting plate 52, a limiting shaft 53 and a limiting plate 54. The strip-shaped plates 50 are jointly arranged between the strip-shaped frame plates 13. The rotating screw rod 51 is threadedly penetrated through the strip-shaped plate 50, and the vertical end of the rotating screw rod 51 is penetrated between the structural grooves 12. The end of the rotating screw rod 51 is rotatably sleeved with the supporting plate 52. The supporting plate 52 is used for supporting the bottom of the part. That is, when the rotating screw rod 51 is driven by an external force to rotate on the strip-shaped plate 50, the supporting plate 52 can be driven to move in the up and down directions.

[0046] The supporting plate 52 is symmetrically provided with limiting shafts 53, and two limiting plates 54 corresponding to the limiting shafts 53 are also provided on both sides of the strip-shaped plate 50. One side of the limiting shaft 53 slidably penetrates through one side of the limiting plate 54 and is sleeved with a limiting disc. That is, when the supporting plate 52 moves in the up and down directions, the limiting shaft 53 can be driven to move synchronously. When the limiting shaft 53 moves, the supporting plate 52 can also be limited by the limiting plate 54 to prevent it from deflecting.

[0047] During the actual use process, after the clamping member 3 drives the part to complete the flipping and descend to the initial position, since the part has only been turned over and the clamped part is still blocked, at this time, the rotating screw rod 51 drives the supporting plate 52 to move upward to support the part. Then, the electric push rod 24 no longer clamps the part, and the supporting plate 52 drives the part to rise a certain distance. After that, the clamping member 3 continues to clamp the area of the part where the contour has been detected, and the originally clamped area is exposed, so that the contour can be detected. After the detection is completed, the supporting plate 52 drives the part to descend, and the part is repositioned on the conveyor belt 11. The parts that have completed the detection are moved away by the conveyor belt 11.

[0048] Refer to Figure 7 and Figure 8 As shown in the figure, that is, the conveyor belt 11 is provided with a limiting component 6 for limiting the transportation of gears and racks; specifically, the limiting component 6 includes a limiting circular groove 60 and a strip-shaped groove 61. 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 communicated with the structural grooves 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 walls with different diameters in the limiting circular groove 60 are used for limiting and accommodating gears of different specifications and sizes.

[0049] The conveyor belt 11 is also provided with several strip-shaped grooves 61 that communicate with the limiting circular grooves 60. The strip-shaped grooves 61 are used to place the racks, and the strip-shaped grooves 61 also communicate with the structural grooves 12. The strip-shaped grooves 61 are used to limit and accommodate the racks. When the limiting circular grooves 60 or the strip-shaped grooves 61 drive the parts to correspond to the clamping members 3, the clamping members 3 will clamp the side of the parts that exposes the corresponding limiting circular grooves 60 and strip-shaped grooves 61. That is, when the parts are completed with inspection, the clamping members 3 will release the limitation on the parts, causing the parts to fall into the corresponding limiting circular grooves 60 or strip-shaped grooves 61.

[0050] Referring Figure 9 As shown, it includes a protection box 7, a rectangular groove 70, and a detection device 71. A protection box 7 is provided on the rectangular frame plate 10. Rectangular grooves 70 corresponding to the conveyor belt 11 are provided on both sides of the protection box 7, and a detection device 71 for detecting the contour of the parts is provided on the inner top wall of the protection box 7.

[0051] The parts are placed in the limiting circular grooves 60 or strip-shaped grooves 61 on the conveyor belt 11 through the rectangular grooves 70 on one side. The protection box 7 is used to protect the device. When the clamping members 3 clamp the parts, the detection device 71 will detect the contour of the parts and the corresponding parts thereof. And the detection device 71 is a well-known technology, so it will not be elaborated here.

[0052] Embodiment 2: Referring Figure 10 and Figure 11 As shown, on the basis of Embodiment 1, in order to provide rotational power for the reciprocating lead screw 14 and the rotating lead screw 51 through a single driving device 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-shaped 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. One side of the two reciprocating lead screws 14 passes through the outer wall of the strip-shaped frame plate 13 and is connected by a belt drive method. That is, the two reciprocating lead screws 14 can rotate synchronously by the belt drive method; internal gears 80 are sleeved on the outer sides of one side of the reciprocating lead screw 14 and the rotating lead screw 51, and two symmetrically distributed rotating rings 81 are rotatably sleeved on the outer sides of the internal gears 80. A transmission belt 82 is jointly 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 outer sides of the corresponding reciprocating lead screw 14 and rotating lead screw 51; and several driving teeth 83 are uniformly distributed along the extension section of the transmission belt 82 on the inner side, and several tooth grooves 84 are distributed along the extension section of the transmission belt 82 on the outer side. The driving teeth 83 correspond to the gaps between the two rotating rings 81.

[0053] That is, by meshing the external gear with the tooth grooves 84 on the outer side of the transmission belt 82 and driving the transmission belt 82 to move. When the driving teeth 83 on the transmission belt 82 mesh with the internal gear 80 on the outer side of the reciprocating lead screw 14 and drive the reciprocating lead screw 14 to rotate, the clamping member 3 indirectly drives the part to rise and flip. After that, the transmission belt 82 moves in the reverse direction, and the reciprocating lead screw 14 is indirectly driven to rotate in the reverse direction through the driving teeth 83, so that the clamping member 3 drives the part to descend to the initial position. Then the transmission belt 82 continues to move in the reverse direction, so that the driving teeth 83 mesh with the internal gear 80 on the outer side of the rotating lead screw 51, and the supporting plate 52 is indirectly driven by the rotating lead screw 51 to support the part and drive the part to rise a certain distance. After the part is detected, at this time, the transmission belt 82 rotates forward, so that the supporting plate 52 drives the part to move into the corresponding limiting circular groove 60 or strip groove 61.

[0054] During operation: In the first step, the part is 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. Then the conveyor belt 11 transports the part.

[0055] In the second step: The outer side of the part is meshed and clamped by the clamping member 3. After the part is clamped, a part of the part is detected by the detection device 71. After the detection is completed, the lifting unit 2 drives the part to rise through the clamping member 3. Then, under the drive of the drive assembly 4, the part is driven by the clamping member 3 to flip 180 degrees, so that the side of the part that has not been detected is flipped to correspond to the detection device 71.

[0056] In the third step: After the part is flipped and descended, the supporting unit 5 can support the bottom of the part and push the part to move upward, so that the clamping member 3 can clamp the area of the part that has been detected, and the clamped area can be exposed to be detected by the detection device 71, which further improves the applicability of the present invention.

[0057] In the fourth step: After the test is completed, the part moves back into the corresponding limiting circular groove 60 or strip groove 61. Then the conveyor belt 11 transports the detected part out of the device.

[0058] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

[0059] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A profile detection fixture for powder metallurgy products, including several support legs, with a rectangular frame plate arranged at the upper end of the support legs, characterized in that: A conveyor belt is arranged between the described rectangular frame plates, and a structure groove is opened in the middle of the conveyor belt. Bar-shaped frame plates are symmetrically arranged on the rectangular frame plates. A reciprocating lead screw is rotatably penetrated through the bar-shaped frame plates, and a lifting unit for lifting parts is arranged on the bar-shaped frame plates; The described lifting unit includes a lifting frame plate slidably arranged on the inner side wall of the bar-shaped frame plate and threadedly connected to the corresponding reciprocating lead screw. A vertical plate is slidably arranged on the inner side wall of the lifting frame plate.

2. The profile detection fixture for powder metallurgy products according to claim 1, wherein: The lifting unit further includes an adjusting lead screw rotatably penetrated through the lifting frame plate and threadedly connected to the vertical plate. One end of the adjusting lead screw located outside the inner side wall of the lifting frame plate is sleeved with an adjusting circular plate. An electric push rod is rotatably penetrated through the vertical plate. The telescopic end of the electric push rod passes through the outer wall on one side of the vertical plate and is provided with a clamping plate. A clamping groove is opened in the clamping plate, and a clamping member for clamping parts is arranged in the clamping groove.

3. The profile detection fixture for powder metallurgy products according to claim 2, characterized in that: The described clamping member includes several sliding blocks slidably arranged in the clamping groove, and the several sliding blocks are evenly distributed at equal intervals. A reset push spring is jointly arranged between adjacent two sliding blocks, and a reset push spring is also jointly arranged between the sliding block and the inner side wall of the clamping groove. A clamping tooth is arranged on one side of the sliding block close to the structure groove.

4. A profile detection fixture for a powder metallurgy product according to claim 3, characterized in that: A sliding cavity is opened in the described clamping tooth. A partition plate is opened in the middle of the sliding cavity. Two side teeth separated by the partition plate are slidably arranged in the sliding cavity, and a pushing spring is jointly arranged between the side tooth and the partition plate.

5. The profile detection fixture for powder metallurgy products according to claim 2, wherein: A driving component for driving the electric push rod to rotate is arranged on the described bar-shaped frame plate. The driving component includes a bent plate arranged on the bar-shaped frame plate. A driving rack is arranged on the bent plate. The housing of the electric push rod is sleeved with a ratchet and ratchet teeth, and a driving external tooth ring corresponding to the driving rack is arranged outside the ratchet and ratchet teeth. Contact plates are symmetrically arranged on the clamping plate in the up and down direction, and one of the contact plates is in contact with the upper end of the conveyor belt.

6. A profile detection fixture for a powder metallurgy product according to claim 1, characterized in that: The lower end of the described bar-shaped 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 bar-shaped plate jointly arranged between the bar-shaped frame plates. A rotating lead screw is threadedly penetrated through the bar-shaped plate, and the vertical end of the rotating lead screw penetrates between the structure grooves. The end of the rotating lead screw is rotatably sleeved with a supporting plate, and the supporting plate is used for supporting the bottom of the part.

7. A profile detection fixture for powder metallurgy products according to claim 6, characterized in that: Limiting shafts are symmetrically arranged on the described supporting plate, and two limiting plates corresponding to the limiting shafts are also arranged on both sides of the bar-shaped plate. One side of the limiting shaft slidably penetrates through one side of the limiting plate and is sleeved with a limiting disc.

8. A profile detection fixture for a powder metallurgy product according to claim 1, characterized in that: A limiting component for limiting the transportation of gears and racks is arranged on the described conveyor belt. The limiting component 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 communicated with the structure grooves. The cross section of the limiting circular groove is bent and the diameter gradually decreases.

9. The profile detection fixture for a powder metallurgy product according to claim 8, wherein: Several strip-shaped grooves communicated with the limiting circular grooves are also opened on the conveyor belt, and the strip-shaped grooves are also communicated with the structure grooves.

10. A fixture for detecting the profile of a powder metallurgy product according to claim 1, characterized in that: A protection box is arranged on the described rectangular frame plate. Rectangular grooves corresponding to the conveyor belt are opened on both sides of the protection box, and a detection device for detecting the contour of the part is arranged on the inner top wall of the protection box.

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