Material tensile testing device

Abstract

The invention discloses a material tensile testing device which comprises a machine table, a material loading device and a material unloading device. The machine table is provided with a tensile station and material changing stations arranged on the two sides of the tensile station. And each clamp assembly is composed of an upper clamp and a lower clamp. The material changing stations are arranged on the two sides of the stretching station, and the two clamp assemblies are arranged, so that when one clamp assembly clamps the detected object for detection, the other clamp assembly can be used for installing a follow-up object needing to be detected, and after the detection of the previous detected object is completed, the other clamp assembly can be used for installing the follow-up object needing to be detected. According to the technical scheme, the transferring mechanism can be used for pushing the detected object and the clamp assembly to the vacant material changing station together, the detected object and the clamp assembly are borne by the corresponding bearing mechanism, the other transferring mechanism can push the detected object prepared in advance to the stretching station from the other material changing station, and preparation operation before stretching detection is rapidly completed; therefore, the stretching detection operation of the material stretching measurement device and the dismounting and mounting operation of the detected object can be synchronously carried out, and the purpose of improving the detection efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of new material detection, and in particular to a material stretching measuring device. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Tensile testing refers to a test method for measuring material properties under axial tensile load. The data obtained from the tensile test can be used to determine the material's elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile performance indicators. Tensile testing plays an important role in new material research and development and quality control.

[0004] Material tensile testing equipment generally clamps the object to be tested through two sets of upper and lower clamps, and then applies tensile force to achieve the testing purpose. However, the clamps of existing tensile testing equipment are integrated with the body. During each test, it is necessary to first remove the tested object from the clamp, and then reinstall the new test object. During the entire replacement process, the tensile testing equipment cannot be operated. When faced with batch testing, it is easy to increase the detection time and affect the detection efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a material tensile testing device to address the above-mentioned deficiencies and to improve the testing efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a material tensile measurement device, comprising:

[0007] A machine platform, wherein a stretching station and material changing stations arranged on both sides of the stretching station are arranged on the machine platform;

[0008] Two clamp assemblies, the clamp assembly consists of an upper clamp and a lower clamp, and the upper clamp and the lower clamp are used to clamp the upper and lower sides of the object to be tested;

[0009] A stretching mechanism, the stretching mechanism is arranged at the stretching station, the stretching mechanism comprises two fixture mounting seats respectively connected to the upper fixture and the lower fixture in a sliding manner, and a telescopic assembly for adjusting the distance between the two fixture mounting seats, wherein the sliding directions of the upper fixture and the lower fixture are perpendicular to the stretching direction of the telescopic assembly;

[0010] Two transfer mechanisms, used to push the two fixture assemblies to transfer between the stretching station and the material changing station respectively;

[0011] Two receiving mechanisms are respectively arranged at two material changing stations and are used for receiving the fixture components transferred by the transfer mechanism.

[0012] Furthermore, the upper clamp and the lower clamp each include a clamp body, a mounting groove for placing the detection object is provided on the side of the clamp body away from the clamp mounting seat, a pressing plate that can move along the width direction of the mounting groove is movably provided in the mounting groove, an adjusting screw that penetrates the clamp body and is threadedly connected to the clamp body is rotatably provided on one side of the moving direction of the pressing plate, and at least one positioning rod that penetrates the clamp body is provided on the side of the pressing plate close to the adjusting screw;

[0013] One of the clamp mounting seats is arranged on the machine table, and the other clamp mounting seat is arranged at the telescopic end of the telescopic component. The clamp mounting seat can be driven by the telescopic component to move towards and away from the other clamp mounting seat. The two clamp mounting seats are provided with a first sliding groove on the opposite side for the clamp body to slide between the stretching station and the material changing station. The first sliding groove is provided with convex strips inserted into the clamp body on the other two sides relative to its sliding direction, and the clamp body is provided with a second sliding groove adapted to the convex strip.

[0014] Furthermore, the transfer mechanism includes two levers and a first moving assembly for driving the two levers to move between the stretching station and the material changing station. The adjusting screw of the clamp assembly is located between the two levers of the corresponding transfer mechanism and within the moving area of ​​the lever. A moving space is formed between the two levers for the adjusting screw corresponding to the upper clamp to move toward and away from the lower clamp.

[0015] Furthermore, at least one positioning pin and a compression spring are provided on the side of the protrusion away from the opening direction of the first slide groove. When the compression spring is in an uncompressed state, the positioning pin and the compression spring are not located in the moving area of ​​the clamp body. A positioning groove for inserting the positioning pin is provided on the clamp body.

[0016] Furthermore, the receiving mechanism includes a vertical plate arranged at the material changing station, a supporting box is arranged on the side of the vertical plate close to the telescopic component, and two limiting rods are arranged on the side of the supporting box close to the vertical plate, and a connecting rod is arranged between the two limiting rods and is located on the side of the vertical plate away from the telescopic component, and a tension spring is arranged between the connecting rod and the vertical plate, and when the tension spring is in an unstretched state, the distance between the supporting box and the clamp mounting seat is smaller than the length of the clamp body, and a plurality of spring latches are arranged on the clamp body of the corresponding upper clamp, and a strip groove for the clamp body to move into is opened on the side of the supporting box close to the stretching station, and a strip hole for the spring latch to be inserted into is also opened on the supporting box, and the transfer mechanism is used to drive the clamp body of the corresponding upper clamp to move into the strip groove until the spring latch is inserted into the strip hole;

[0017] The receiving mechanism also includes an unlocking component for pushing the spring latch to move out of the strip hole and a receiving guide rail for receiving the lower clamp, and the receiving guide rail has the same shape as the clamp mounting seat.

[0018] Furthermore, the unlocking assembly includes a push rod and a second moving assembly for pushing the push rod to move toward and away from one side of the strip hole. When the spring latch moves along the strip hole to the lower limit position, the spring latch is within the moving area of ​​the push rod.

[0019] Furthermore, the telescopic assembly is provided with a marking assembly for marking the object to be inspected, and the marking assembly includes a telescopic component and a marking pen driven by the telescopic component to move toward and away from the object to be inspected;

[0020] The scribing components are divided into two groups and are respectively arranged at two material changing stations.

[0021] The beneficial effects of the present invention are embodied in:

[0022] The present invention sets a material changing station on both sides of the stretching station and sets two clamp assemblies, so that when one of the clamp assemblies is clamping the object to be tested for testing, the other clamp assembly can be installed with the subsequent required test object, and after the previous test object is tested, the transfer mechanism can be used to push the test object together with the clamp assembly to the vacant material changing station to be received by the corresponding receiving mechanism, and the other transfer mechanism can push the pre-prepared test object from the other material changing station to the stretching station, quickly completing the preparation operation before the stretching test, so that the stretching test operation of the material stretching measuring device can be carried out synchronously with the disassembly and assembly operation of the test object, thereby achieving the purpose of improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional view of the present invention;

[0024] Figure 2 for Figure 1 A local enlarged schematic diagram of point A is shown;

[0025] Figure 3 for Figure 1 A local enlarged schematic diagram of point B is shown;

[0026] Figure 4 It is a partial exploded schematic diagram of the upper clamp of the present invention;

[0027] Figure 5 It is a partial cross-sectional view of the clamp mounting seat of the present invention.

[0028] In the figure:

[0029] 1. Machine;

[0030] 2. Clamp assembly; 21. Upper clamp; 211. Clamp body; 212. Press plate; 213. Adjusting screw; 214. Positioning rod; 215. Spring latch; 22. Lower clamp;

[0031] 3. stretching mechanism; 31. fixture mounting seat; 32. telescopic assembly; 33. convex strip; 34. positioning pin; 35. compression spring;

[0032] 4. Transfer mechanism; 41. Push rod; 42. First moving assembly;

[0033] 5. Undertaking mechanism; 51. Vertical plate; 52. Support box; 53. Limit rod; 54. Connecting rod; 55. Tension spring; 56. Unlocking assembly; 57. Undertaking guide rail;

[0034] 6. Marking assembly; 61. Telescopic component; 62. Marking pen. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-5 The present invention discloses a material tensile measuring device, comprising:

[0037] Machine 1, machine 1 is provided with a stretching station and a material changing station arranged on both sides of the stretching station;

[0038] Two clamp assemblies 2, the clamp assembly 2 is composed of an upper clamp 21 and a lower clamp 22, and the upper clamp 21 and the lower clamp 22 are used to clamp the upper and lower sides of the object to be tested;

[0039] The stretching mechanism 3 is arranged at the stretching station. The stretching mechanism 3 includes two clamp mounting seats 31 respectively connected to the upper clamp 21 and the lower clamp 22 in a sliding manner and a telescopic component 32 for adjusting the distance between the two clamp mounting seats 31. The sliding direction of the upper clamp 21 and the lower clamp 22 is perpendicular to the stretching direction of the telescopic component 32.

[0040] Two transfer mechanisms 4, used to push the two clamp assemblies 2 to transfer between the stretching station and the material changing station respectively;

[0041] Two receiving mechanisms 5 are respectively arranged at two material changing stations, and are used to receive the clamp assembly 2 transferred by the transfer mechanism 4 .

[0042] The present invention sets a material changing station on both sides of the stretching station and sets two clamp assemblies 2, so that when one of the clamp assemblies 2 is clamping the object to be tested for testing, the other clamp assembly 2 can be installed with the subsequent required test object, and after the previous test object is tested, the transfer mechanism 4 can be used to push the test object together with the clamp assembly 2 to the vacant material changing station, and be received by the corresponding receiving mechanism 5, and the other transfer mechanism 4 can push the pre-prepared test object from another material changing station to the stretching station, quickly completing the preparation operation before the stretching test, so that the stretching test operation of the material stretching measuring device can be carried out synchronously with the disassembly and assembly operation of the test object, so as to achieve the purpose of improving the detection efficiency.

[0043] It should be noted that, before material testing, the material tensile testing device needs to pre-process the test object to the same specifications to meet the consistency required for subsequent testing.

[0044] In one embodiment, the upper clamp 21 and the lower clamp 22 both include a clamp body 211, and a mounting groove for placing the detection object is opened on the side of the clamp body 211 away from the clamp mounting seat 31, and a pressing plate 212 that can move along the width direction of the mounting groove is movably arranged in the mounting groove, and an adjusting screw 213 that penetrates the clamp body 211 and is threadedly connected to the clamp body 211 is rotatably arranged on one side of the moving direction of the pressing plate 212, and at least one positioning rod 214 that penetrates the clamp body 211 is arranged on the side of the pressing plate 212 close to the adjusting screw 213;

[0045] One of the clamp mounting seats 31 is arranged on the machine 1, and the other clamp mounting seat 31 is arranged at the telescopic end of the telescopic component 32. The clamp mounting seat 31 can be driven by the telescopic component 32 to move toward and away from the other clamp mounting seat 31. The two clamp mounting seats 31 are provided with a first sliding groove on the opposite side for the clamp body 211 to slide between the stretching station and the material changing station. The other two sides of the first sliding groove relative to its sliding direction are provided with convex strips 33 inserted into the clamp body 211, and a second sliding groove adapted to the convex strip 33 is provided in the clamp body 211.

[0046] Such a design enables both the upper clamp 21 and the lower clamp 22 to be pushed out of the clamp mounting seat 31. When the upper clamp 21 and the lower clamp 22 are in the clamp mounting seat 31, due to the restriction of the convex strip 33, the clamp mounting seat 31 stretched by the telescopic component 32 can stably transmit the pulling force to the upper clamp 21, thereby ensuring that the device can stably perform tensile testing on the material.

[0047] In one embodiment, the transfer mechanism 4 includes two levers 41 and a first moving assembly 42 for driving the two levers 41 to move between the stretching station and the material changing station. The adjusting screw 213 of the clamp assembly 2 is located between the two levers 41 of the corresponding transfer mechanism 4 and within the moving area of ​​the lever 41. A moving space is formed between the two levers 41 for the adjusting screw 213 corresponding to the upper clamp 21 to move toward and away from the lower clamp 22.

[0048] This design allows the upper clamp 21 and the lower clamp 22 to be pushed by the lever 41 at the same time and move synchronously, and because a moving space is formed between the two levers 41 for the adjusting screw 213 corresponding to the upper clamp 21 to move toward and away from the lower clamp 22, the upper clamp 21 can still be pushed by the lever 41 after being stretched to any position, meeting the requirement that the upper clamp 21 can continue to be pushed to move after the material is stretched and deformed.

[0049] In one embodiment, at least one positioning pin 34 and a compression spring 35 are provided on the side of the protrusion 33 away from the opening direction of the first slide groove. When the compression spring 35 is in an uncompressed state, the positioning pin 34 and the compression spring 35 are not located in the moving area of ​​the clamp body 211. A positioning groove for inserting the positioning pin 34 is provided on the clamp body 211.

[0050] With this design, during the stretching test, the upwardly moved upper clamp 21 will first drive the clamp body 211 to move toward the side close to the positioning pin 34, so that the positioning pin 34 is inserted into the positioning groove, and the clamp body 211 is positioned to ensure the consistency of the position during the subsequent stretching test. After the stretching test is completed, due to the breakage of the material, the compression spring 35 can push the clamp body 211 to reset, so that the removal of the clamp body 211 is not affected by the positioning pin 34.

[0051] It should be noted that the end of the positioning pin 34 close to the clamp body 211 is tapered, so that when the positioning groove of the clamp body 211 is not completely aligned with the positioning pin 34, the tapered inclined surface can still be used to guide the positioning pin 34 to be inserted.

[0052] In one embodiment, the receiving mechanism 5 includes a vertical plate 51 disposed at the material changing station, a supporting box 52 is disposed on the side of the vertical plate 51 close to the telescopic assembly 32, two limiting rods 53 penetrating the vertical plate 51 are disposed on the side of the supporting box 52 close to the vertical plate 51, a connecting rod 54 located on the side of the vertical plate 51 away from the telescopic assembly 32 is disposed between the two limiting rods 53, and a tension spring 55 is disposed between the connecting rod 54 and the vertical plate 51. When the tension spring 55 is in an unstretched state, the supporting box 52 The distance between the clamp mounting seat 31 and the clamp body 211 is smaller than the length of the clamp body 211. A plurality of spring latches 215 are arranged on the clamp body 211 of the corresponding upper clamp 21. A strip groove for the clamp body 211 to move into is provided on the side of the supporting box 52 close to the stretching station. A strip hole for the spring latch 215 to be inserted into is also provided on the supporting box 52. The transfer mechanism 4 is used to drive the clamp body 211 of the corresponding upper clamp 21 to move into the strip groove until the spring latch 215 is inserted into the strip hole.

[0053] The receiving mechanism 5 further includes an unlocking assembly 56 for pushing the spring latch 215 out of the strip-shaped hole and a receiving guide rail 57 for receiving the lower clamp 22 . The receiving guide rail 57 has the same shape as the clamp mounting seat 31 .

[0054] With this design, when the material is stretched and broken to different positions, the upper clamp 21 can be pushed to move to one side of the supporting box 52. When the spring pin 215 is stuck in the strip hole, a part of the upper clamp 21 is still left in the clamp mounting seat 31. After that, the upper clamp 21 continues to be moved, and the supporting box 52 can be pushed to move together until the upper clamp 21 is completely moved out of the clamp mounting seat 31. Then, the telescopic component 32 can drive the vacant clamp mounting seat 31 to move down and reset, and receive the upper clamp 21 transferred from another material changing station. The upper clamp 21 moved out in the early stage can only move up and down under the dual restrictions of the supporting box 52 and the lever 41. Therefore, it can be moved down to the lower limit point under the manual operation of the operator, and the residual detection object on it can be removed and replaced with a new detection object for standby.

[0055] In one embodiment, the unlocking assembly 56 includes a push rod and a second moving assembly for pushing the push rod to move toward and away from one side of the strip hole. When the spring latch 215 moves along the strip hole to the lower limit position, the spring latch 215 is in the moving area of ​​the push rod.

[0056] Such a design ensures that the upper clamp 21 can be unlocked by the unlocking assembly 56 only when it moves to the lower limit position, ensuring that the upper clamp 21 at the material changing station can accurately enter the clamp mounting seat 31 at the stretching station after being moved out.

[0057] In one embodiment, the telescopic assembly 32 is provided with a marking assembly 6 for marking the object to be inspected, and the marking assembly 6 includes a telescopic component 61 and a marking pen 62 driven by the telescopic component 61 to move toward and away from the object to be inspected;

[0058] The scribing components 6 are divided into two groups and are respectively arranged at two material changing stations.

[0059] By controlling the extension and retraction of the telescopic component 61 and changing the position of the marking pen 62, the marking pen 62 can automatically draw a marking line on the test piece when the new test piece is pushed from the material changing station to the stretching station, making it convenient for subsequent test personnel to judge whether the test piece slips when stretched during the test process.

[0060] It should be noted that the telescopic assembly 32 , the first movable assembly 42 , the second movable assembly, and the telescopic component 61 are common knowledge in the art, and therefore their specific structural components and working principles are not described in detail herein.

[0061] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0062] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] In addition, "plurality" means two or more.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A material tensile measuring device, characterized in that: include: A machine (1), wherein the machine (1) is provided with a stretching station and a material changing station arranged on both sides of the stretching station; Two clamp assemblies (2), the clamp assemblies (2) consisting of an upper clamp (21) and a lower clamp (22), the upper clamp (21) and the lower clamp (22) being used to clamp the upper and lower sides of the object to be inspected; A stretching mechanism (3), the stretching mechanism (3) being arranged at a stretching station, the stretching mechanism (3) comprising two clamp mounting seats (31) respectively connected in a sliding manner to an upper clamp (21) and a lower clamp (22), and a telescopic assembly (32) for adjusting the distance between the two clamp mounting seats (31), wherein the sliding directions of the upper clamp (21) and the lower clamp (22) are perpendicular to the stretching direction of the telescopic assembly (32); Two transfer mechanisms (4) are used to respectively push the two clamp assemblies (2) to transfer between the stretching station and the material changing station; Two receiving mechanisms (5) are respectively arranged at two material changing stations and are used to receive the clamp assembly (2) transferred by the transfer mechanism (4).

2. A material tensile testing device according to claim 1, characterized in that: The upper clamp (21) and the lower clamp (22) both include a clamp body (211), a mounting groove for placing a detection object is provided on a side of the clamp body (211) away from the clamp mounting seat (31), a pressing plate (212) is movably provided in the mounting groove and can move along the width direction of the mounting groove, an adjusting screw (213) penetrating the clamp body (211) and threadedly connected to the clamp body (211) is rotatably provided on one side of the moving direction of the pressing plate (212), and at least one positioning rod (214) penetrating the clamp body (211) is provided on a side of the pressing plate (212) close to the adjusting screw (213); One of the clamp mounting seats (31) is arranged on the machine platform (1), and the other clamp mounting seat (31) is arranged at the telescopic end of the telescopic component (32). The clamp mounting seat (31) can be driven by the telescopic component (32) to move towards and away from the other clamp mounting seat (31). The two clamp mounting seats (31) are provided with a first sliding groove on one side opposite to the other side for the clamp body (211) to slide between the stretching station and the material changing station. The first sliding groove is provided with convex strips (33) inserted into the clamp body (211) on the other two sides relative to the sliding direction thereof. The clamp body (211) is provided with a second sliding groove adapted to the convex strip (33).

3. A material tensile testing device according to claim 2, characterized in that: The transfer mechanism (4) comprises two shifting rods (41) and a first moving assembly (42) for driving the two shifting rods (41) to move between the stretching station and the material changing station. The adjusting screw (213) of the clamp assembly (2) is located between the two shifting rods (41) of the corresponding transfer mechanism (4) and within the moving area of ​​the shifting rod (41). A moving space is formed between the two shifting rods (41) for the adjusting screw (213) corresponding to the upper clamp (21) to move toward and away from the lower clamp (22).

4. A material tensile testing device according to claim 2, characterized in that: At least one positioning pin (34) and a compression spring (35) are provided on the side of the convex strip (33) away from the opening direction of the first slide groove. When the compression spring (35) is in an uncompressed state, the positioning pin (34) and the compression spring (35) are not located in the moving area of ​​the clamp body (211). The clamp body (211) is provided with a positioning groove for inserting the positioning pin (34).

5. A material tensile testing device according to claim 2, characterized in that: The receiving mechanism (5) comprises a vertical plate (51) arranged at the material changing station, a supporting box (52) is arranged on the side of the vertical plate (51) close to the telescopic assembly (32), two limiting rods (53) penetrating the vertical plate (51) are arranged on the side of the supporting box (52) close to the vertical plate (51), a connecting rod (54) located on the side of the vertical plate (51) away from the telescopic assembly (32) is arranged between the two limiting rods (53), a tension spring (55) is arranged between the connecting rod (54) and the vertical plate (51), and when the tension spring (55) is in an unstretched state, the supporting box (51) is The distance between the upper clamp (52) and the clamp mounting seat (31) is smaller than the length of the clamp body (211), and a plurality of spring latches (215) are arranged on the clamp body (211) of the corresponding upper clamp (21). A strip groove for the clamp body (211) to move into is provided on the side of the support box (52) close to the stretching station, and a strip hole for the spring latches (215) to snap into is also provided on the support box (52). The transfer mechanism (4) is used to drive the clamp body (211) of the corresponding upper clamp (21) to move into the strip groove until the spring latches (215) snap into the strip hole. The receiving mechanism (5) further comprises an unlocking assembly (56) for pushing the spring latch (215) out of the strip-shaped hole and a receiving guide rail (57) for receiving the lower clamp (22); the receiving guide rail (57) has the same shape as the clamp mounting seat (31).

6. A material tensile testing device according to claim 5, characterized in that: The unlocking assembly (56) comprises a push rod and a second moving assembly for pushing the push rod to move toward and away from the strip hole. When the spring latch (215) moves along the strip hole to the lower limit position, the spring latch (215) is within the moving area of ​​the push rod.

7. A material tensile testing device according to claim 1, characterized in that: The telescopic component (32) is provided with a marking component (6) for marking the object to be inspected, and the marking component (6) comprises a telescopic component (61) and a marking pen (62) driven by the telescopic component (61) to move toward and away from the object to be inspected; The scribing components (6) are divided into two groups and are respectively arranged at two material changing stations.

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