Coated wire mechanical properties tester

Abstract

The present application discloses a coated yarn mechanical property tester, which belongs to the technical field of yarn testing. It mainly includes a casing; a driving component, a lower clamping component, an upper clamping component, and a guide component. The guide component is installed on the casing, and the guide component includes: at least two groups of connecting rods, the connecting rods are installed on the casing; a mounting frame, the mounting frame is installed on the connecting rods, and the mounting frame is located between the upper clamping component and the lower clamping component; two groups of slide rails, the slide rails are installed on the mounting frame; two groups of sliders, the sliders are slidably set on the slide rails; a guide cylinder, the guide cylinder is installed between the two groups of sliders; two groups of rollers, the rollers are rotatably installed on the guide cylinder; a camera is installed on the guide cylinder, and the camera is connected to the PLC system. The coated yarn mechanical property tester of the present application, through the guide assembly and the self-propelled clamping assembly, makes the position of the coated yarn after the breakage unified, so as to facilitate subsequent observation, so as to achieve the effect of unifying the position of the yarn after the breakage.

Description

Technical Field

[0001] The present application relates to the technical field of yarn testing, and in particular to a coated yarn mechanical property tester. Background Art

[0002] Mechanical properties tester is a device that can test the performance of materials under mechanical action. According to the different test contents and application fields, mechanical properties testers can be divided into many types, such as universal testing machine, tensile testing machine, pressure testing machine, bending testing machine, etc.

[0003] For example, the patent with publication number CN212432780U specifically discloses a single yarn strength tester, which clamps one end of the yarn by a first clamping component, then clamps the other end of the yarn by a second clamping component, and then drives the first clamping component to perform a lifting operation by a driving mechanism, thereby stretching the yarn until it breaks, so as to test its properties such as breaking strength or breaking elongation;

[0004] However, in the implementation of the above patent, if there are many groups of yarns to be tested, the broken yarns lose tension, so that the positions of the multiple groups of yarns are in random areas after each break. Therefore, when the staff needs to observe the broken part of the yarn, they need to visually check the area where the yarn is located each time, and then manually grab the broken yarn to observe the state of the broken part, which greatly increases the workload of the staff.

[0005] Therefore, it is necessary to provide a coated wire mechanical properties tester to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a coated yarn mechanical property tester to achieve the effect of unifying the position of the yarn after breakage.

[0008] The technical solution adopted by the present application to solve its technical problems is: a coated wire mechanical properties tester, including a casing; a driving assembly, the driving assembly is installed inside the casing; a lower clamping assembly, the lower clamping assembly is installed on the driving assembly; an upper clamping assembly, the upper clamping assembly is installed on the driving assembly; a guide assembly, the guide assembly is installed on the casing, and the guide assembly includes: at least two groups of connecting rods, the connecting rods are installed on the casing; a mounting frame, the mounting frame is installed on the connecting rods, and the mounting frame is located between the upper clamping assembly and the lower clamping assembly; two groups of slide rails, the slide rails are installed on the mounting frame; two groups of sliders, the sliders are slidably arranged on the slide rails; a guide cylinder, the guide cylinder is installed between the two groups of sliders; two groups of rollers, the rollers are rotatably installed on the guide cylinder; a camera is installed on the guide cylinder, and the camera is connected to the PLC system.

[0009] Furthermore, a self-propelled clamping assembly is provided on the guide cylinder, and the self-propelled clamping assembly includes two sets of extension blocks installed on the guide cylinder, a pad is installed on the extension block, a stepper motor is installed on the pad, a rotating shaft is installed at the output end of the stepper motor, a second gear is installed on the rotating shaft, a second rack is installed inside the mounting frame, and the second gear is meshingly connected with the second rack.

[0010] Furthermore, a first gear is installed on the rotating shaft, a first rack is slidably arranged inside the extension block, the first rack is meshingly connected with the first gear, a connecting block is installed at one end of the first rack, the connecting block passes through the guide cylinder, a splint is installed at the end of the connecting block away from the first rack, and the splint is located at the bottom of the guide cylinder.

[0011] Furthermore, two groups of bosses are installed on both sides of the first rack, a round rod is installed on the boss, one end of the round rod is connected to the connecting block, the round rod is sleeved with meshing teeth, a spring is arranged between the meshing teeth and the boss, the spring is sleeved on the outside of the round rod, and a limit block is arranged at one end of the round rod away from the first rack.

[0012] Furthermore, the driving assembly includes a base installed inside the casing, a support plate is installed on the base, and a top plate is installed at one end of the support plate away from the base.

[0013] Furthermore, a screw rod is rotatably installed between the top plate and the base, a slide seat is threadedly installed on the screw rod, a slide groove is opened on the casing, and part of the slide seat is located inside the slide groove.

[0014] Furthermore, two groups of guide rods are installed on the base, the guide rods penetrate the slide seat, and the ends of the two groups of guide rods away from the base are connected to the top plate.

[0015] Furthermore, a servo motor is installed on the base, and the output end of the servo motor and the bottom of the screw rod are connected through a belt drive.

[0016] Furthermore, the lower clamping assembly includes a connecting plate installed on the sliding seat, a fixing seat is installed on the connecting plate, a cylinder is installed on the fixing seat, and a push plate is installed on the output end of the cylinder.

[0017] Furthermore, a placement block is provided on one side of the push plate, the placement block is installed on the fixing seat, a groove is provided on the placement block, a plug hole is provided on the push plate, and a cushion block is inserted inside the plug hole.

[0018] The beneficial effect of the present application is that the coated wire mechanical properties tester provided by the present application, through the guide component and the self-propelled clamping component, makes the position of the coated wire after breaking unified, so as to facilitate subsequent observation, thereby achieving the effect of unifying the position of the yarn after breaking.

[0019] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is an overall schematic diagram of the coated wire mechanical properties tester in this application;

[0022] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0023] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0024] Figure 4 for Figure 1 Schematic diagram of the internal structure;

[0025] Figure 5 for Figure 1 Another perspective diagram of the middle guide assembly;

[0026] Figure 6 for Figure 5 The enlarged schematic diagram of the center C;

[0027] Figure 7 for Figure 3 The middle part is a schematic diagram of the whole from another perspective;

[0028] Figure 8 for Figure 7 The enlarged schematic diagram of point D in the middle;

[0029] Fig. 9 for Figure 7 Another perspective diagram of the whole;

[0030] Fig.10 for Fig. 9 The enlarged schematic diagram of point E in the middle;

[0031] Fig.11 for Fig. 9 The structural diagram of the middle part as a whole;

[0032] Fig.12 for Fig.11 The enlarged schematic diagram of F in the middle;

[0033] Among them, the reference numerals in the figure are:

[0034] 1. Casing; 2. Upper clamping assembly; 3. Lower clamping assembly; 31. Connecting plate; 32. Fixed seat; 33. Cylinder; 34. Push plate; 35. Pad; 36. Groove; 37. Placement block;

[0035] 4. Guide assembly; 41. Guide cylinder; 42. Clamp; 43. Camera; 44. Mounting frame; 45. Slide rail; 46. Roller; 47. Slider; 48. Connecting rod;

[0036] 5. Driving assembly; 51. Base; 52. Screw rod; 53. Guide rod; 54. Top plate; 55. Support plate; 56. Slide seat; 57. Servo motor; 58. Slide slot;

[0037] 6. Self-propelled clamping assembly; 61. Pad; 62. Stepper motor; 63. First gear; 64. First rack; 641. Meshing teeth; 642. Spring; 643. Round rod; 644. Limit block; 645. Connecting block; 646. Boss; 647. Rebound part; 65. Extension block; 66. Second gear; 661. Second rack. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0040] The yarn tested in this application is a covered yarn, which is composed of multiple single fibers arranged in parallel and merged into a strand of multiple groups of fibers, and a skin is wrapped around the outside of the multiple groups of fibers, and the skin is made of an elastic material;

[0041] Embodiment 1: This embodiment specifically describes the basic structure and working principle of a single yarn strength machine, specifically:

[0042] like Figure 1 and Figure 4 As shown, the present application provides a coated wire mechanical property tester, including a housing 1, and a drive assembly 5 is arranged inside the housing 1, and the drive assembly 5 is used to provide power for subsequent equipment;

[0043] Continue to refer Figure 4 The driving assembly 5 includes a base 51 installed inside the housing 1, the base 51 is located at the bottom of the housing 1, and a support plate 55 is fixedly installed on the base 51, and a top plate 54 is fixedly installed at one end of the support plate 55 away from the base 51, so as to provide an installation area for the installation of subsequent components;

[0044] At the same time, a screw rod 52 is rotatably installed between the top plate 54 and the base 51, and a slide seat 56 is threadedly installed on the screw rod 52. At the same time, a slide groove 58 (such as Figure 1 As shown), the slide seat 56 is slidably disposed inside the slide groove 58;

[0045] Continue to refer Figure 4 Two sets of guide rods 53 are fixedly mounted on the base 51. The guide rods 53 penetrate the slide 56 so that when the screw rod 52 rotates under the action of external force, the slide 56 is driven to move up and down along the axis of the screw rod 52. Under the restriction of the guide rods 53, the moving direction of the slide 56 is fixed. At the same time, the ends of the two sets of guide rods 53 away from the base 51 are connected to the top plate 54.

[0046] At the same time, a servo motor 57 is fixedly mounted on the base 51, and the output end of the servo motor 57 and the bottom of the screw rod 52 are connected through a belt transmission mechanism, so that the servo motor 57 drives the screw rod 52 to rotate through the belt transmission mechanism. In this application, the structure and distance of the belt transmission mechanism are conventional prior art and are not described in detail here.

[0047] At the same time, a lower clamping assembly 3 is provided on the slide seat 56, and the lower clamping assembly 3 is used to clamp one end of the coated wire;

[0048] like Figure 1-Figure 2As shown, the lower clamping assembly 3 includes a connecting plate 31 fixedly mounted on the slide 56, a fixing seat 32 is fixedly mounted on the connecting plate 31, and a cylinder 33 is mounted on the fixing seat 32, and a push plate 34 is fixedly mounted on the output end of the cylinder 33, so that the push plate 34 can move under the drive of the cylinder 33;

[0049] At the same time, a placement block 37 is fixedly installed on the fixed seat 32. The placement block 37 is located on one side of the push plate 34, and a certain gap is left between the push plate 34 and the placement block 37. For the convenience of explanation, the gap is defined as a placement area. When clamping, one end of the coated wire to be detected is placed in the placement area, and driven by the cylinder 33, the push plate 34 can approach the placement block 37 to clamp one end of the coated wire.

[0050] At the same time, an arc-shaped groove 36 is opened on the placement block 37, and the starting section of the bottom of the groove 36 is connected to the placement area, so that the coated wire can be introduced into the groove 36, and the end section of the groove 36 is in a vertical state and passes through the top of the placement block 37, so that the coated wire can be led out. It can be understood that when clamping the coated wire, the staff first puts one end of the coated wire into the placement area of ​​the lower clamping assembly 3, and starts the cylinder 33 to clamp it, and then the remaining part of the coated wire will be in a suspended state. At this time, the staff will pull the suspended part of the coated wire into the starting section of the groove 36, and guide the coated wire to be pulled out from the end of the groove 36, so that the part of the coated wire that is led out is in a vertical upward state;

[0051] like Figure 1 As shown, an upper clamping assembly 2 having the same structure as the lower clamping assembly 3 is provided on the top plate 54, so as to clamp the other end of the coated wire, so that the coated wire led out from the lower clamping assembly 3 can enter from the end of the groove 36 on the upper clamping assembly 2, and enter the placement area of ​​the upper clamping assembly 2 through the starting section, and then the cylinder 33 of the upper clamping assembly 2 is started to clamp the other end of the coated wire;

[0052] To summarize, when testing the coated wire, the two ends of the coated wire are clamped by the upper clamping assembly 2 and the lower clamping assembly 3, and then the driving assembly 5 is started to drive the lower clamping assembly 3 to move vertically downward to tighten the coated wire until the entire coated wire breaks, and the test data at this time will be synchronously displayed on the external data panel. Then the staff manually takes the broken coated wire and observes the broken end of the coated wire, and then records the test results in combination with the test data.

[0053] Embodiment 2: During the test of the above-mentioned coated wire, since the coated wire loses tension when it breaks, the positions of the multiple groups of coated wires are not fixed after each break;

[0054] Therefore, when testing multiple groups of coated wires, the staff needs to visually check the area where the broken coated wire is located each time, then manually grab the broken coated wire, observe the state of the broken part, and then record the test results in combination with the test data, which greatly increases the workload;

[0055] In order to solve this problem, a guide assembly 4 is provided on the housing 1, and the guide assembly 4 is used to guide the broken coated wire, so as to present the broken point of the coated wire in front of the staff, thereby facilitating the staff to observe;

[0056] like Figure 1 and Figure 5-Figure 6 As shown, the guide assembly 4 includes a plurality of connecting rods 48 fixedly arranged on the housing 1, the plurality of connecting rods 48 are located on both sides of the slide groove 58, and a mounting frame 44 is fixedly installed on the plurality of connecting rods 48, the mounting frame 44 is located between the upper clamping assembly 2 and the lower clamping assembly 3, and two sets of slide rails 45 are fixedly installed on the mounting frame 44, and sliders 47 are slidably arranged on the two sets of slide rails 45, so that the sliders 47 can move up and down on the slide rails 45;

[0057] At the same time, a guide cylinder 41 is fixedly installed between the two sets of sliders 47, so that the slider 47 can synchronously drive the guide cylinder 41 to move up and down. At the same time, two sets of rollers 46 are rotatably installed on the guide cylinder 41, and the rollers 46 are against one side of the slide rail 45, so that the guide cylinder 41 can slide smoothly. At the same time, a through hole (not marked in the figure) is penetrated on the guide cylinder 41, so that the coated wire to be detected can pass through, and the broken coated wire can be straightened through the through hole;

[0058] Since the breaking point of the coated wire is not fixed, in order to ensure that the guide cylinder 41 can stop near the breaking point of the coated wire, Figure 3 As shown, a camera 43 is fixedly installed on the guide cylinder 41, and the camera 43 is connected to the PLC system, so that the camera 43 can find the breaking point of the coated wire and send a signal to the PLC system, thereby controlling the guide cylinder 41 to stop moving up and down, so as to position the guide cylinder 41 close to the breaking point of the coated wire, so that the coating wire will not bend at the breaking point, thereby facilitating observation by the staff.

[0059] In order to clamp the coated wire when the guide cylinder 41 reaches the breaking point of the coated wire to prevent the coated wire from falling off, Figure 7-Figure 8As shown, a self-propelled clamping assembly 6 is provided on the guide cylinder 41, and the self-propelled clamping assembly 6 includes two groups of extension blocks 65 fixedly mounted on the guide cylinder 41, and a backing plate 61 is fixedly mounted on the extension block 65, and a stepping motor 62 is fixedly mounted on the backing plate 61, and a rotating shaft (not shown in the figure) is fixedly mounted on the output end of the stepping motor 62, and a second gear 66 is fixedly mounted on the rotating shaft;

[0060] A second rack 661 (such as Figure 3 As shown), the second gear 66 is meshed and connected with the second rack 661, and then the second gear 66 is driven by the stepping motor 62 to mesh and rotate on the second rack 661, so that the guide cylinder 41 fixedly connected to the second gear 66 is synchronously lifted and lowered on the slide rail 45. In the initial state, the guide cylinder 41 is close to the upper clamping assembly 2;

[0061] like Figure 8 and Fig.10 As shown, a first gear 63 is fixedly mounted on the rotating shaft, and a first rack 64 is slidably arranged inside the extension block 65. The first rack 64 is meshedly connected with the first gear 63, so that the stepping motor 62 drives the first gear 63 to rotate, thereby driving the first rack 64 to slide inside the extension block 65;

[0062] like Figure 11-Figure 12 As shown, for the convenience of explanation, the left end of the first rack 64 is defined as the initial end, and the right end of the first rack 64 is defined as the terminal end. At the same time, a connecting block 645 is installed at the initial end of the first rack 64, and the connecting block 645 penetrates the guide cylinder 41, and a clamping plate 42 is fixedly installed at one end of the connecting block 645 away from the first rack 64. The clamping plate 42 is located at the bottom of the guide cylinder 41, so that during the sliding process of the first rack 64, the two groups of clamping plates 42 can be made to approach or move away from each other, and clamp the coated wire when approaching;

[0063] In order to make the lifting of the guide cylinder 41 and the clamping of the coated wire by the clamping plate 42 reach the specified position synchronously, as shown in FIG. Fig.12As shown, an energy dissipation portion is provided between the initial end of the first rack 64 and the connecting block 645, and the energy dissipation portion is used to maintain the clamping state of the clamping plate 42 on the coated wire. The energy dissipation portion includes bosses 646 fixedly provided on both sides of the first rack 64, and a round rod 643 is fixedly installed on the boss 646, and one end of the round rod 643 is connected to the connecting block 645, and at the same time, a meshing tooth 641 is sleeved on the round rod 643, so that the meshing tooth 641 can slide on the round rod 643 along its axis, and at the same time, a spring 642 is provided between the meshing tooth 641 and the boss 646, and the spring 642 is sleeved on the outside of the round rod 643, and at the same time, a limit block 644 is fixedly provided at one end of the round rod 643 away from the first rack 64, so as to limit the moving range of the meshing tooth 641;

[0064] When the two groups of clamping plates 42 move away from each other, as the first gear 63 continues to rotate, the meshing position of the first gear 63 reaches the initial end from the terminal end. During this process, the first rack 64 moves toward the outside of the guide cylinder 41 until the meshing position of the first gear 63 passes the initial end. Because the meshing teeth 641 and the first rack 64 have the same tooth shape and are one tooth pitch apart, when the first gear 63 passes the initial end, it will mesh with the meshing teeth 641. It should be noted that the first rack 64 has a small number of teeth, so that the first gear 63 can rotate a small number of circles to rotate the meshing position of the first gear 63 from the terminal end to the initial end.

[0065] As the first gear 63 continues to rotate, and due to the elastic activity of the meshing teeth 641, the first gear 63 will repeatedly mesh and separate with the meshing teeth 641, so that the meshing teeth 641 repeatedly switch in the process of approaching the initial end and resetting, and then repeatedly slide in the extension block 65. Here, the initial position of the meshing teeth 641 can be defined as the first position, and the position of the meshing teeth 641 close to the initial end is defined as the second position, so that the meshing teeth 641 can be driven by the first gear 63 to swing back and forth between the first position and the second position, thereby offsetting the redundant number of rotations of the first gear 63;

[0066] At the same time, a rebound portion 647 having the same structure as the energy dissipation portion is provided at the terminal end of the first rack 64, and in the initial state, the first gear 63 is meshed with the initial end of the first rack 64;

[0067] Therefore, when clamping the coated wire, the first gear 63 rotates in the opposite direction until the meshing position of the first gear 63 reaches the terminal end from the initial end, at which time the first rack 64 drives the clamping plate 42 to clamp the coated wire, and when the first gear 63 passes the terminal end and meshes with the rebound portion 647, the first rack 64 drives the clamping plate 42 to slightly clamp the coated wire. It should be noted that the clamping or slightly clamping state of the clamping plate 42 does not clamp the coated wire too tightly, so as to have no effect on the movement of the guide cylinder 41, thereby achieving support for the coated wire to prevent the coated wire from falling off;

[0068] To sum up, when the coated wire is clamped, after being clamped by the lower clamping assembly 3, the remaining coated wire is passed through the through hole of the guide cylinder 41 and clamped by the upper clamping assembly 2, and then the coated wire is subjected to a breaking test, and then the stepper motor 62 drives the second gear 66 to mesh and rotate with the second rack 661 through the rotating shaft, so that the guide cylinder 41 is synchronously moved on the slide rail 45 toward the lower clamping assembly 3, so as to straighten and guide the broken coated wire, and find the broken part of the coated wire through the camera 43, and at the same time, the stepper motor 62 synchronously drives the first gear 63 to rotate, driving the first rack 64 to move toward the inside of the guide cylinder 41 in the extension block 65, and then driving the clamping plate 42 to clamp the coated wire until the first gear 63 meshes with the energy dissipation part;

[0069] And because the first rack 64 has a small number of teeth, when the first gear 63 initially rotates, the first rack 64 can drive the clamp 42 to clamp the broken coated wire, so that when the guide cylinder 41 initially moves, the clamp 42 is always in a clamping state for the broken coated wire, so that when the breaking point of the coated wire is close to the upper clamping component 2, it is clamped first. When the breaking point of the coated wire is away from the upper clamping component 2, the guide cylinder 41 needs to continue to move. At this time, the stepper motor 62 continues to rotate, and the excess number of turns of the first gear 63 can be offset by the energy dissipation part, thereby not affecting the movement of the guide cylinder 41.

[0070] Example 3: In order to test the tensile properties of the fibers inside the epidermis, a simulated pull-out test is required to test the tensile properties of the fibers, such as Figure 2 As shown, a plug hole (not shown in the figure) is opened on the push plate 34 in the lower clamping assembly 3, and a cushion block 35 is inserted into the plug hole. It should be noted that the plug hole and the placement area are set through, and after the cushion block 35 is inserted into the plug hole, the middle part of the cushion block 35 will protrude from the plug hole and extend into the placement area to form an extrusion portion, which is suitable for contacting with the coated wire and clamping the coated wire, so that the coated wire is changed from the original surface contact with the push plate 34 to the point contact with the extrusion portion of the cushion block 35;

[0071] Therefore, when the coated wire is clamped, the extrusion part contacts the coated wire. Since the contact area is small at this time, stress is concentrated in the contact area, so as to increase the shear force between the epidermis and the internal fibers, thereby realizing the peeling operation;

[0072] Subsequently, the driving component 5 controls the lower clamping component 3 to stretch downward until the coated wire breaks between the epidermis below the contact position with the extrusion part, while the fiber is not broken. At this time, the lower clamping component 3 continues to move downward. Since the broken epidermis is still clamped by the extrusion part, the fiber pulling operation will be simulated during its movement until the broken epidermis is separated from the internal fiber. At this time, the test data will be synchronously displayed on the external data panel. The staff then takes the coated wire, visually inspects whether there is obvious damage on the fiber surface, and records the test results in combination with the test data.

[0073] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Coated wire mechanical properties tester, characterized by: include: Housing (1); A drive assembly (5), the drive assembly (5) being installed inside the housing (1); A lower clamping assembly (3), wherein the lower clamping assembly (3) is mounted on the driving assembly (5); An upper clamping assembly (2), wherein the upper clamping assembly (2) is mounted on the driving assembly (5); A guide assembly (4), wherein the guide assembly (4) is mounted on the housing (1), and the guide assembly (4) comprises: at least two groups of connecting rods (48), wherein the connecting rods (48) are mounted on the housing (1); A mounting frame (44), wherein the mounting frame (44) is mounted on the connecting rod (48), and the mounting frame (44) is located between the upper clamping assembly (2) and the lower clamping assembly (3); Two sets of slide rails (45), wherein the slide rails (45) are mounted on the mounting frame (44); Two groups of sliders (47), wherein the sliders (47) are slidably arranged on the slide rails (45); A guide cylinder (41), wherein the guide cylinder (41) is installed between two groups of the slide blocks (47); Two groups of rollers (46), the rollers (46) being rotatably mounted on the guide cylinder (41); A camera (43) is installed on the guide cylinder (41), and the camera (43) is connected to the PLC system; The guide cylinder (41) is provided with a self-propelled clamping assembly (6), and the self-propelled clamping assembly (6) comprises two groups of extension blocks (65) mounted on the guide cylinder (41), a pad (61) is mounted on the extension block (65), a stepper motor (62) is mounted on the pad (61), a rotating shaft is mounted on the output end of the stepper motor (62), a second gear (66) is mounted on the rotating shaft, a second rack (661) is mounted inside the mounting frame (44), and the second gear (66) is meshedly connected with the second rack (661).

2. The coated wire mechanical properties tester according to claim 1, characterized in that: A first gear (63) is installed on the rotating shaft, a first rack (64) is slidably arranged inside the extension block (65), the first rack (64) and the first gear (63) are meshingly connected, a connecting block (645) is installed at one end of the first rack (64), the connecting block (645) passes through the guide cylinder (41), and a clamping plate (42) is installed at one end of the connecting block (645) away from the first rack (64), and the clamping plate (42) is located at the bottom of the guide cylinder (41).

3. The coated wire mechanical properties tester according to claim 2, characterized in that: Two groups of bosses (646) are installed on both sides of the first rack (64), a round rod (643) is installed on the boss (646), one end of the round rod (643) is connected to the connecting block (645), and the round rod (643) is sleeved with meshing teeth (641), a spring (642) is arranged between the meshing teeth (641) and the boss (646), and the spring (642) is sleeved on the outside of the round rod (643), and a limiting block (644) is arranged at one end of the round rod (643) away from the first rack (64).

4. The coated wire mechanical properties tester according to claim 1, characterized in that: The driving assembly (5) comprises a base (51) mounted inside the housing (1), a support plate (55) being mounted on the base (51), and a top plate (54) being mounted on one end of the support plate (55) away from the base (51).

5. The coated wire mechanical properties tester according to claim 4, characterized in that: A screw rod (52) is rotatably mounted between the top plate (54) and the base (51), a slide seat (56) is threadedly mounted on the screw rod (52), a slide groove (58) is provided on the housing (1), and a portion of the slide seat (56) is located inside the slide groove (58).

6. The coated wire mechanical properties tester according to claim 5, characterized in that: Two groups of guide rods (53) are installed on the base (51), and the guide rods (53) pass through the slide seat (56). One end of the two groups of guide rods (53) away from the base (51) is connected to the top plate (54).

7. The coated wire mechanical properties tester according to claim 5, characterized in that: A servo motor (57) is mounted on the base (51), and an output end of the servo motor (57) and a bottom of the screw rod (52) are connected via a belt drive.

8. The coated wire mechanical properties tester according to claim 5, characterized in that: The lower clamping assembly (3) comprises a connecting plate (31) mounted on the sliding seat (56), a fixing seat (32) being mounted on the connecting plate (31), a cylinder (33) being mounted on the fixing seat (32), and a push plate (34) being mounted on the output end of the cylinder (33).

9. The coated wire mechanical properties tester according to claim 8, characterized in that: A placement block (37) is provided on one side of the push plate (34), the placement block (37) is mounted on the fixing seat (32), a groove (36) is provided on the placement block (37), and a plug hole is provided on the push plate (34), a cushion block (35) is inserted into the plug hole.

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