Nut twisting testing device

Abstract

The utility model discloses a nut twisting test device, comprising a transfer platform comprising a rotation driving mechanism, a rotating disc and a positioning tool; the feeding assembly comprises a feeding conveying belt and a limiting rail; the carrying assembly comprises a two-dimensional driving mechanism, a clamping driving mechanism, a carrying elastic connecting structure and a clamping piece, the clamping driving mechanism is connected to the two-dimensional driving mechanism, and the carrying elastic connecting structure is connected with the clamping driving mechanism and the clamping piece; the twisting test assembly comprises a test lifting driving mechanism, a test elastic connecting structure, a test twisting driving mechanism, a torsion sensor and a thread test piece, the test elastic connecting structure is connected with the test lifting driving mechanism and the test twisting driving mechanism, and the torsion sensor is connected with a driving part of the test twisting driving mechanism and the thread test piece. According to the utility model, continuous and reliable test actions can be realized on nut products, the test efficiency is high, the labor cost is low, and the twisting test result is accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of nut testing, in particular to a nut twisting testing device. Background Art

[0002] A nut is a part that is screwed together with a bolt or screw to achieve a tightening effect. Depending on different application scenarios, different nuts can be provided with internal threads or external threads, which are used to match different threaded parts to achieve threaded locking connections.

[0003] Nuts are common fasteners, and their quality and performance directly impact product safety and reliability. Nuts are typically subject to various quality control tests before they are shipped. Traditionally, the thread performance of nuts is tested manually by twisting a ruler onto the nut. This method is labor-intensive, inefficient, and difficult to guarantee accurate and consistent test results. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a nut twisting test device that can perform consistent and reliable positioning and testing operations on nuts with high testing efficiency and accuracy.

[0005] A nut twisting test device according to an embodiment of the present invention includes:

[0006] The transfer platform includes a rotary drive mechanism, a turntable and a positioning fixture. The turntable is provided with a loading station and a first testing station. The positioning fixture is connected to the turntable and is used to receive nut products. The turntable is connected to the rotary drive mechanism.

[0007] The feeding assembly includes a feeding conveyor belt and a limiting track. The limiting track is provided on the feeding conveyor belt. The feeding conveyor belt is used to drive the nut products forward. The feeding conveyor belt is located on one side of the loading station.

[0008] The transport assembly includes a two-dimensional drive mechanism, a clamping drive mechanism, a transport elastic connection structure and a clamping piece. The clamping drive mechanism is connected to the two-dimensional drive mechanism. The two-dimensional drive mechanism is used to drive the clamping drive mechanism to move in the up and down directions and the radial direction of the turntable. The two ends of the transport elastic connection structure are respectively connected to the driving part and the clamping piece of the clamping drive mechanism, so that the clamping piece forms a movement trend away from the clamping drive mechanism. A transport assembly is provided on one side of the loading station.

[0009] The torsion test assembly includes a test lifting drive mechanism, a test elastic connection structure, a test torsion drive mechanism, a torque sensor and a threaded test piece. The two ends of the test elastic connection structure are respectively connected to the driving part of the test lifting drive mechanism and the fixed part of the test torsion drive mechanism, so that the test torsion drive mechanism forms a movement trend away from the test lifting drive mechanism. The two ends of the torque sensor are respectively connected to the driving part of the test torsion drive mechanism and the threaded test piece. The threaded test piece is located directly above the first test station.

[0010] In this embodiment, the feeding assembly also includes a feeding bracket, an adjusting rail, a feeding elastic connection structure, a cam and an adjusting motor. The two ends of the feeding elastic connection structure are respectively connected to the adjusting rail and the feeding bracket. The adjusting rail is arranged on the feeding conveyor belt. The adjusting rail is located on the side of the limiting rail away from the loading station. A limiting material trough is provided in the limiting rail. An adjusting material trough connected to the limiting material trough is provided in the adjusting rail. The cam is connected to the adjusting motor. The cam is located on one side of the adjusting rail.

[0011] In this embodiment, the width of the trough is adjusted to continuously narrow along the forward direction of the nut product.

[0012] In this embodiment, four feed elastic connection structures are provided and are evenly distributed on opposite sides of the adjustment track. The feed elastic connection structure includes a feed guide rod, a feed spring and a feed guide sleeve. One end of the feed guide rod is connected to the adjustment track, and the other end of the feed guide rod is passed through the feed guide sleeve. The feed guide sleeve is connected to the feed bracket, and the opposite ends of the feed spring are respectively connected to the adjustment track and the feed guide sleeve.

[0013] In this embodiment, the clamping drive mechanism is a clamping cylinder, two transport elastic connection structures are provided and are respectively connected to the two drive parts of the clamping cylinder, and two clamping members are provided and are respectively connected to the corresponding transport elastic connection structures.

[0014] In this embodiment, the transport elastic connection structure includes a transport guide rod, a transport spring and a transport push plate. The transport push plate is connected to the driving part of the clamping cylinder. The transport push plate is provided with a transport guide hole. The transport guide rod is passed through the transport guide hole. The end of the transport guide rod close to the clamping cylinder is provided with a transport limit block. The other end of the transport guide rod is connected to the clamping member. The opposite ends of the transport spring are respectively connected to the clamping member and the transport push plate, so that the clamping member forms a movement tendency away from the transport push plate.

[0015] In this embodiment, the test elastic connection structure includes a test guide column, a test spring, a test lifting frame and a test push plate. The test push plate is connected to the driving part of the test lifting drive mechanism. The test push plate is provided with a test guide hole. The test guide column is passed through the test guide hole. The top end of the test guide column is connected to a test limit block. The bottom end of the test guide column is connected to the test lifting frame. The test torsion drive mechanism is connected to the test lifting frame. The opposite ends of the test spring are respectively connected to the test push plate and the test lifting frame, so that the test lifting frame forms a movement trend away from the test push plate.

[0016] In this embodiment, a second test station is also provided on the turntable. The second test station is located on the side of the first test station away from the loading station. There are two groups of torsion test components. The two thread test pieces are a thread standard gauge and a thread stop gauge. The thread standard gauge is located directly above the first test station, and the thread stop gauge is located directly above the second test station.

[0017] In this embodiment, the nut twisting test device also includes a unloading conveyor belt, and a unloading station is provided on the turntable. The unloading station is located on the side of the loading station away from the first test station. The unloading conveyor belt is located on one side of the unloading station. There are multiple handling components, and the unloading station is provided with a handling component.

[0018] In this embodiment, the nut twisting test device also includes a recycling box, and a recycling station is provided on the turntable. The recycling station is located on the side of the unloading station away from the loading station. The recycling box is located on one side of the recycling station, and the recycling station is provided with a transport room.

[0019] The embodiments of the present invention have at least the following beneficial effects:

[0020] Through the coordinated work of the transfer platform, feeding assembly, handling assembly and twisting test assembly, the nut product can be loaded, positioned, handled and twisted in a consistent and reliable manner. Not only is the test efficiency high and the labor cost low, but the errors caused by manual operation are reduced, thereby improving the accuracy of the test results. By connecting the test lifting drive mechanism and the test twisting drive mechanism with the test elastic connection structure in the twisting test assembly, after the test lifting drive mechanism drives the threaded test piece to press the nut product, when the test twisting drive mechanism drives the threaded test piece to twist and screw into the nut product to realize the test, the threaded test piece can achieve a dynamic descending effect under the action of the test elastic connection structure, which can effectively ensure the stability of the position of the nut product in the positioning fixture, can effectively improve the test accuracy, and the twisting test results are accurate and reliable. In addition, the torque sensor in the twisting test assembly can collect test data in real time for analysis and evaluation, which can further improve the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a nut twisting test device according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of a feeding assembly and a transport assembly in a nut twisting test device according to an embodiment of the present invention;

[0024] Figure 3 This is a partial structural diagram of a handling assembly in a nut twisting test device according to an embodiment of the present invention;

[0025] Figure 4 This is a structural schematic diagram of a torsion test assembly in a nut torsion test device according to an embodiment of the present invention;

[0026] Figure 5 This is a structural schematic diagram of testing the elastic connection structure in the nut twisting test device according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] Transfer platform 100, rotary drive mechanism 110, turntable 120, loading station 121, first test station 122, second test station 123, recycling station 124, unloading station 125, positioning fixture 130;

[0029] Feed assembly 200, feed conveyor belt 210, limiting track 220, limiting trough 221, feed bracket 230, adjustment track 240, adjustment trough 241, feed elastic connection structure 250, feed guide rod 251, feed spring 252, feed guide sleeve 253, cam 260, adjustment motor 270;

[0030] The transport assembly 300, the two-dimensional drive mechanism 310, the clamping drive mechanism 320, the transport elastic connection structure 330, the transport guide rod 331, the transport spring 332, the transport push plate 333, the transport guide hole 334, the transport limit block 335, and the clamping member 340;

[0031] Torsion test assembly 400, test lifting drive mechanism 410, test elastic connection structure 420, test guide column 421, test spring 422, test lifting frame 423, test push plate 424, test guide hole 425, test limit block 426, test torsion drive mechanism 430, torque sensor 440, threaded test piece 450;

[0032] Unloading conveyor belt 500;

[0033] Recycling box 600. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of this utility model, if there is a description of a wire sleeve or a bracket, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] Nuts are parts that are screwed together with bolts or screws to achieve a fastening effect. Depending on different application scenarios, different nuts can be provided with internal or external threads, which are used to match different threaded parts to achieve threaded locking connections. As a common fastener, the quality and performance of nuts directly affect the safety and reliability of the product. In the process of nut processing and production, nuts usually need to undergo different quality control tests before production. Torsion testing of nuts to evaluate their mechanical properties and durability when subjected to torsional forces is an important part of ensuring product quality. In traditional technologies, the thread performance of nuts is generally tested by manually operating a ruler tool to twist it onto the nut. This testing method has high labor costs and is not only inefficient, but also difficult to guarantee the accuracy and consistency of the test results.

[0039] The nut twisting test device in the existing technology has the following shortcomings: first, the loading and positioning process relies on manual operation, which is not only time-consuming and labor-intensive, but also prone to errors; second, the testing process lacks flexibility and adaptability, making it difficult to achieve fast and accurate testing of nuts of different specifications.

[0040] The following reference Figure 1 To the attached Figure 5 , describing the nut twisting test device of the embodiment of the utility model, which can perform consistent and reliable positioning and testing operations on nuts, with high testing efficiency and high testing accuracy.

[0041] Reference Figures 1 to 5 A nut twisting test device according to an embodiment of the present invention includes:

[0042] The transfer platform 100 includes a rotary drive mechanism 110, a turntable 120 and a positioning fixture 130. The rotary drive mechanism 110 is connected to the frame. The turntable 120 is provided with a loading station 121 and a first test station 122 arranged in sequence along the rotation direction of the rotary drive mechanism 110. The positioning fixture 130 is connected to the turntable 120. The positioning fixture 130 is used to accommodate the positioning nut product. The top of the nut product is an external thread connection part, and the bottom of the nut product is a polygonal positioning part. The polygonal positioning part of the nut product is accommodated in the positioning fixture 130. The turntable 120 is connected to the rotary drive mechanism 110. The rotary drive mechanism 110 is used to drive the turntable 120 to rotate so that the positioning fixture 130 reaches each station, such as the loading station 121 and the first test station 122.

[0043] The feeding assembly 200 includes a feeding conveyor belt 210 and a limiting track 220. The rotating shaft of the feeding conveyor belt 210 is rotatably connected to the frame. The limiting track 220 is provided on the feeding conveyor belt 210. The limiting track 220 is used to limit the forward feeding trajectory of the nut products. The feeding conveyor belt 210 is used to drive the nut products forward. The feeding conveyor belt 210 is located on one side of the loading station 121 to facilitate the transfer of the nut products on the feeding conveyor belt 210 to the positioning fixture 130 at the loading station 121.

[0044] The transport assembly 300 includes a two-dimensional drive mechanism 310, a clamping drive mechanism 320, a transport elastic connection structure 330 and a clamping member 340. The two-dimensional drive mechanism 310 is connected to the frame, and the clamping drive mechanism 320 is connected to the two-dimensional drive mechanism 310. The two-dimensional drive mechanism 310 can include a lifting gas rod and a translation gas rod. The shell of the translation gas rod is connected to the output end of the lifting gas rod. The output of the translation gas rod is the driving part of the two-dimensional drive mechanism 310. The two-dimensional drive mechanism 310 is used to drive the clamping drive mechanism 320 to move in the up and down directions and the radial direction of the turntable 120, thereby realizing various The two ends of the elastic connection structure 330 for transporting and transferring between each station and the components around the turntable 120 are respectively connected to the driving part and the clamping member 340 of the clamping drive mechanism 320, so that the clamping member 340 forms a movement trend away from the clamping drive mechanism 320. The clamping drive mechanism 320 is used to drive the clamping member 340 to elastically clamp the nut product through the elastic connection structure 330. A transport assembly 300 is provided on one side of the loading station 121. The transport group there is used to transport the nut product on the feed conveyor belt 210 to the positioning fixture 130 at the loading station 121;

[0045] The torsion test assembly 400 includes a test lifting drive mechanism 410, a test elastic connection structure 420, a test torsion drive mechanism 430, a torque sensor 440 and a threaded test piece 450. The test lifting drive mechanism 410 is connected to the frame, and the threaded test piece 450 is provided with a threaded structure that matches the standard nut product. The two ends of the test elastic connection structure 420 are respectively connected to the driving part of the test lifting drive mechanism 410 and the fixed part of the test torsion drive mechanism 430, so that the test torsion drive mechanism 430 forms a movement trend away from and downward toward the test lifting drive mechanism 410. When the lifting drive mechanism is a cylinder and the test torsion drive mechanism 430 is a motor, the test elastic connection structure 420 is respectively connected to the test lifting drive mechanism 410 and the fixed part of the test torsion drive mechanism 430. 0 output rod and the casing of the test torsion drive mechanism 430, the test lifting drive mechanism 410 is used to drive the test torsion mechanism to realize lifting movement through the test elastic connection structure 420, and the two ends of the torque sensor 440 are respectively connected to the driving part of the test torsion drive mechanism 430 and the threaded test piece 450, the threaded test piece 450 is located directly above the first test station 122, the torsion drive mechanism is used to drive the threaded test piece 450 to rotate to realize the rotation test of the nut product, the torque sensor 440 is used to measure the torsional force formed between the threaded test piece 450 and the test torsion drive mechanism 430, the torque sensor 440 is connected to the analysis system through a signal line, and the corresponding analysis system designed according to the needs can effectively improve the accuracy of the torsion test.

[0046] The working process is as follows: a plurality of nut products advance on the feed conveyor 210, the transport assembly 300 there transports the nut products on the feed conveyor 210 to the positioning fixture 130 at the loading station 121, the rotary drive mechanism 110 drives the turntable 120 to rotate, so that the positioning fixture 130 loaded with nut products is transferred from the loading station 121 to the first testing station 122, the test lifting drive mechanism 410 drives the test twisting drive mechanism 430 to descend through the test elastic connection structure 420, so that the threaded test piece 450 presses the nut product, and the test The test twisting drive mechanism 430 drives the threaded test piece 450 to rotate so that the threaded test piece 450 is screwed into the nut product. During the twisting test between the threaded test piece 450 and the nut product, under the action of the test elastic connection structure 420, the threaded test piece 450 can automatically descend during the process of screwing into the nut product. It has strong flexibility and can effectively prevent the nut product from rising away from the positioning fixture 130 during the test, which can effectively improve the reliability of the test action. In addition, during the twisting test, the data measured by the torque sensor 440 can reflect the results of the twisting test.

[0047] Through the coordinated work of the transfer platform 100, the feeding assembly 200, the handling assembly 300 and the twisting test assembly 400, the nut products can be loaded, positioned, handled and twisted in a consistent and reliable manner, which not only improves the test efficiency and reduces the labor cost, but also reduces the errors caused by manual operation, thereby improving the accuracy of the test results; by connecting the test lifting drive mechanism 410 and the test twisting drive mechanism 430 through the test elastic connection structure 420 in the twisting test assembly 400, after the test lifting drive mechanism 410 drives the threaded test piece 450 to tighten the nut product, When the test twisting drive mechanism 430 drives the threaded test piece 450 to twist and screw into the nut product to realize the test, the threaded test piece 450 can achieve the effect of dynamic descent under the action of the test elastic connection structure 420, which can effectively ensure the stability of the position of the nut product in the positioning fixture 130, and can effectively improve the test accuracy, and the twisting test results are accurate and reliable; in addition, the torque sensor 440 in the twisting test assembly 400 is connected to the analysis system through a signal line, and can collect test data in real time for analysis and evaluation, thereby realizing instant feedback and evaluation of the test results, which can further improve the test accuracy.

[0048] It can be understood that the feeding assembly 200 also includes a feeding bracket 230, an adjusting rail 240, a feeding elastic connecting structure 250, a cam 260 and an adjusting motor 270. The feeding bracket 230 and the adjusting motor 270 are both connected to the frame. The two ends of the feeding elastic connecting structure 250 are respectively connected to the adjusting rail 240 and the feeding bracket 230 to realize an elastic active connection between the adjusting rail 240 and the feeding bracket 230. The adjusting rail 240 is provided on the feeding conveyor belt 210. The adjusting rail 240 is located on the side of the limiting rail 220 away from the loading station 121. The limiting rail 220 is provided with a The limiting material trough 221 and the adjusting track 240 are provided with an adjusting material trough 241 connected to the limiting material trough 221, the cam 260 is connected to the adjusting motor 270, and the cam 260 is located on one side of the adjusting track 240. The adjusting motor 270 is used to drive the cam 260 to rotate, thereby pushing the adjusting track 240 to move, and the adjusting track 240 can realize the reset movement under the action of the feeding elastic connection structure 250, so that the adjusting track 240 forms a vibration effect, thereby adjusting the position of the nut product in the adjusting material trough 241, which can ensure that the nut product can smoothly enter the limiting material trough 221.

[0049] It can be understood that the storage width of the adjustment trough 241 is continuously narrowed along the forward direction of the nut product to improve the guiding effect of the nut product from the adjustment trough 241 into the limiting trough 221, which can effectively reduce the occurrence of problems such as jamming, and can effectively ensure that the nut products in the limiting trough 221 can be closely arranged and advanced, and can effectively improve the accuracy of the position of the nut product when it reaches the end point of the limiting trough 221, thereby effectively improving the feeding effect.

[0050] It can be understood that there are four feed elastic connection structures 250 and they are evenly distributed on the opposite sides of the adjustment track 240, that is, one side of the adjustment track 240 is connected to the feed bracket 230 through two feed elastic connection structures 250, and the other side of the adjustment track 240 is connected to the feed bracket 230 through another two feed elastic connection structures 250, which can effectively improve the effect of the adjustment track 240 being reset to the center position on the feed conveyor belt 210. The feed elastic connection structure 250 includes a feed guide rod 251, a feed spring 252 and a feed guide sleeve 253. One end of the feed guide rod 251 is connected to the adjustment track 240, and the feed guide rod 251 is connected to the feed bracket 230. The other end is passed through the feed guide sleeve 253, and the feed guide rod 251 can realize linear sliding in the feed guide sleeve 253. Preferably, the feed guide sleeve 253 is a linear bearing, and the feed guide sleeve 253 is fixedly connected to the feed bracket 230. The feed spring 252 is sleeved on the outside of the feed guide rod 251, and the opposite ends of the feed spring 252 are respectively connected to the adjustment rail 240 and the feed guide sleeve 253, or the opposite ends of the feed spring 252 are respectively connected to the adjustment rail 240 and the feed bracket 230, so that the adjustment rail 240 can be restored to the initial center position under the action of the driving force of the cam 260, and the adjustment feeding effect of the adjustment rail 240 is good.

[0051] It can be understood that the clamping drive mechanism 320 is a clamping cylinder, which is also called pneumatic fingers. It is an actuator that uses compressed air as power to clamp or grab workpieces. The clamping cylinder includes at least two driving parts for outputting clamping force. The transport elastic connection structure 330 is provided with two driving parts respectively connected to the two driving parts of the clamping cylinder. The clamping member 340 is provided with two driving parts respectively connected to the corresponding transport elastic connection structures 330, that is, the two ends of each transport elastic connection structure 330 are respectively connected to the driving part and the clamping member 340 of the corresponding clamping cylinder, so that the clamping member 340 forms a movement trend away from the clamping cylinder, and the transport assembly 300 can form a stable and reliable clamping and positioning effect.

[0052] It can be understood that, for each transport elastic connection structure 330: the transport elastic connection structure 330 includes a transport guide rod 331, a transport spring 332 and a transport push plate 333, the transport push plate 333 is connected to the driving part of the clamping cylinder, the transport push plate 333 is provided with a transport guide hole 334, the transport guide rod 331 is passed through the transport guide hole 334, the transport guide rod 331 can slide in the transport guide hole 334, the transport guide rod 331 is provided with a transport limit block 335 at one end close to the clamping cylinder housing, the other end of the transport guide rod 331 is connected to the clamping member 340, the transport limit block 335 and The clamping member 340 is located on opposite sides of the transport push plate 333. Preferably, the clamping member 340 is provided with a clamping jaw clearance hole for passing the clamping jaw cylinder drive unit, and the transporting spring 332 is sleeved on the outside of the transporting guide rod 331. The opposite ends of the transporting spring 332 are respectively connected to the clamping member 340 and the transport push plate 333, so that the clamping member 340 forms a movement trend away from the transport push plate 333. When the clamping member 340 clamps the nut product, it can form an elastic and reliable clamping force, which can not only effectively improve the stability of the clamping action, but also reduce the wear of the nut product caused by the clamping member 340.

[0053] The test guide post 421 is provided with a test guide hole 425, and the test guide post 421 is passed through the test guide hole 425. The test guide post 421 can realize lifting and sliding in the test guide hole 425. The top of the test guide post 421 is connected to the test limit block 426, and the bottom end of the test guide post 421 is connected to the test lifting frame 423. The casing of the test torsion drive mechanism 430 is connected to the test lifting frame 423, and the test spring 422 is sleeved in the test guide post 421. The opposite ends of the test spring 422 are respectively connected to the test push plate 424 and the test lifting frame 423, so that the test lifting frame 423 forms a movement trend away from and downward toward the test push plate 424. The test elastic connection structure 420 can effectively improve the flexibility of the action during the torsion test.

[0054] It can be understood that a second test station 123 is also provided on the turntable 120, and the second test station 123 is located on the side of the first test station 122 away from the loading station 121. There are two groups of twisting test assemblies 400, and the two groups of twisting test assemblies 400 are respectively located at the first test station 122 and the second test station 123. The two threaded test pieces 450 in the two groups of twisting test assemblies 400 are respectively a thread standard gauge and a thread stop gauge. The thread standard gauge is located directly above the first test station 122, and the thread stop gauge is located directly above the second test station 123. Different tests can be performed on nut products through the thread standard gauge and the thread stop gauge.

[0055] It can be understood that the nut twisting test device also includes a unloading conveyor belt 500, and a unloading station 125 is also provided on the turntable 120. The unloading station 125 is located on the side of the loading station 121 away from the first test station 122. The unloading conveyor belt 500 is located on one side of the unloading station 125. There are multiple conveying components 300, and the unloading station 125 is also provided with a conveying component 300. The conveying component 300 there is used to transfer the nut product in the positioning fixture 130 at the unloading station 125 to the unloading conveyor belt 500.

[0056] It can be understood that the nut twisting test device also includes a recovery box 600, and a recovery station 124 is also provided on the turntable 120. The recovery station 124 is located on the side of the unloading station 125 away from the loading station 121. When a second test station 123 is also provided on the turntable 120, the loading station 121, the first test station 122, the second test station 123, the recovery station 124 and the unloading station 125 are arranged in sequence along the rotation direction of the rotating drive mechanism 110. The recovery box 600 is located on one side of the recovery station 124. The recovery station 124 is also provided with a conveying room. The conveying component 300 there is used to transfer the nut products in the positioning fixture 130 at the recovery station 124 to the recovery box 600, thereby recovering unqualified nut products.

[0057] It should be noted that there are a number of positioning jigs 130 , and each positioning jig 130 is evenly distributed on the turntable 120 along the circumferential direction, so that different positioning jigs 130 arrive at corresponding workstations at different times.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A nut twisting test device, characterized in that: include: A transfer platform (100) comprises a rotary drive mechanism (110), a turntable (120) and a positioning fixture (130), wherein the turntable (120) is provided with a loading station (121) and a first testing station (122), the positioning fixture (130) is connected to the turntable (120), the positioning fixture (130) is used to receive nut products, and the turntable (120) is connected to the rotary drive mechanism (110); A feeding assembly (200) comprises a feeding conveyor belt (210) and a limiting track (220), wherein the limiting track (220) is provided on the feeding conveyor belt (210), and the feeding conveyor belt (210) is used to drive the nut products forward, and the feeding conveyor belt (210) is located on one side of the loading station (121); A transport assembly (300) comprises a two-dimensional drive mechanism (310), a clamping drive mechanism (320), a transport elastic connection structure (330) and a clamping member (340), wherein the clamping drive mechanism (320) is connected to the two-dimensional drive mechanism (310), and the two-dimensional drive mechanism (310) is used to drive the clamping drive mechanism (320) to move in the up-down direction and in the radial direction of the turntable (120), and the two ends of the transport elastic connection structure (330) are respectively connected to the drive portion of the clamping drive mechanism (320) and the clamping member (340), so that the clamping member (340) forms a movement trend away from the clamping drive mechanism (320), and a transport assembly (300) is provided on one side of the loading station (121); A torsion test assembly (400) comprises a test lifting drive mechanism (410), a test elastic connection structure (420), a test torsion drive mechanism (430), a torque sensor (440) and a threaded test piece (450). The two ends of the test elastic connection structure (420) are respectively connected to the driving part of the test lifting drive mechanism (410) and the fixed part of the test torsion drive mechanism (430), so that the test torsion drive mechanism (430) forms a movement trend away from the test lifting drive mechanism (410). The two ends of the torque sensor (440) are respectively connected to the driving part of the test torsion drive mechanism (430) and the threaded test piece (450). The threaded test piece (450) is located directly above the first test station (122).

2. A nut twisting test device according to claim 1, characterized in that: The feeding assembly (200) further comprises a feeding bracket (230), an adjusting rail (240), a feeding elastic connection structure (250), a cam (260) and an adjusting motor (270), wherein the two ends of the feeding elastic connection structure (250) are respectively connected to the adjusting rail (240) and the feeding bracket (230), the adjusting rail (240) is arranged on the feeding conveyor belt (210), the adjusting rail (240) is located on a side of the limiting rail (220) away from the loading station (121), a limiting material trough (221) is provided in the limiting rail (220), and an adjusting material trough (241) connected to the limiting material trough (221) is provided in the adjusting rail (240), the cam (260) is connected to the adjusting motor (270), and the cam (260) is located on one side of the adjusting rail (240).

3. A nut twisting test device according to claim 2, characterized in that: The width of the regulating trough (241) continuously narrows along the advancing direction of the nut product.

4. A nut twisting test device according to claim 3, characterized in that: The feed elastic connection structure (250) is provided with four and is evenly distributed on opposite sides of the adjustment track (240). The feed elastic connection structure (250) includes a feed guide rod (251), a feed spring (252) and a feed guide sleeve (253). One end of the feed guide rod (251) is connected to the adjustment track (240), and the other end of the feed guide rod (251) is passed through the feed guide sleeve (253). The feed guide sleeve (253) is connected to the feed bracket (230). The opposite ends of the feed spring (252) are respectively connected to the adjustment track (240) and the feed guide sleeve (253).

5. A nut twisting test device according to claim 1, characterized in that: The clamping drive mechanism (320) is a clamping claw cylinder, the transport elastic connection structure (330) is provided with two driving parts respectively connected to the two driving parts of the clamping claw cylinder, and the clamping member (340) is provided with two driving parts respectively connected to the corresponding transport elastic connection structures (330).

6. A nut twisting test device according to claim 5, characterized in that: The transport elastic connection structure (330) comprises a transport guide rod (331), a transport spring (332) and a transport push plate (333); the transport push plate (333) is connected to the driving part of the clamping cylinder; the transport push plate (333) is provided with a transport guide hole (334); the transport guide rod (331) is passed through the transport guide hole (334); a transport limit block (335) is provided at one end of the transport guide rod (331) close to the clamping cylinder; the other end of the transport guide rod (331) is connected to the clamping member (340); the opposite ends of the transport spring (332) are respectively connected to the clamping member (340) and the transport push plate (333), so that the clamping member (340) forms a movement tendency away from the transport push plate (333).

7. A nut twisting test device according to claim 1, characterized in that: The test elastic connection structure (420) comprises a test guide post (421), a test spring (422), a test lifting frame (423) and a test push plate (424); the test push plate (424) is connected to the driving part of the test lifting drive mechanism (410); the test push plate (424) is provided with a test guide hole (425); the test guide post (421) is passed through the test guide hole (425); the top end of the test guide post (421) is connected to a test limit block (426); the bottom end of the test guide post (421) is connected to the test lifting frame (423); the test twisting drive mechanism (430) is connected to the test lifting frame (423); the opposite ends of the test spring (422) are respectively connected to the test push plate (424) and the test lifting frame (423), so that the test lifting frame (423) forms a movement tendency away from the test push plate (424).

8. The nut twisting test device according to claim 1, characterized in that: The turntable (120) is also provided with a second test station (123), which is located on the side of the first test station (122) away from the loading station (121). The twist test assembly (400) is provided with two groups, and the two thread test pieces (450) are respectively a thread standard gauge and a thread stop gauge. The thread standard gauge is located directly above the first test station (122), and the thread stop gauge is located directly above the second test station (123).

9. The nut twisting test device according to claim 1, characterized in that: The invention also includes a material unloading conveyor belt (500), a material unloading station (125) is also provided on the turntable (120), the material unloading station (125) is located on a side of the material loading station (121) away from the first test station (122), the material unloading conveyor belt (500) is located on one side of the material unloading station (125), a plurality of the transport components (300) are provided, and the material unloading station (125) is provided with the transport component (300).

10. A nut twisting test device according to claim 9, characterized in that: The invention also includes a recycling box (600), and a recycling station (124) is provided on the turntable (120). The recycling station (124) is located on a side of the unloading station (125) away from the loading station (121). The recycling box (600) is located on one side of the recycling station (124), and the recycling station (124) is provided with the transport space.

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