A sample breaking and clamping mechanism and testing machine

Abstract

The present application relates to the field of testing equipment, especially to a sample breaking clamping mechanism and a testing machine, the sample breaking clamping mechanism is arranged on the testing machine, and the sample breaking clamping mechanism comprises: a jaw mechanism, the jaw mechanism is movably arranged on the testing machine, and a sample is clamped thereon; and a pneumatic gripper mechanism, which has a clamping part of the jaw mechanism, clamps the jaw mechanism, and can move the clamping mechanism for clamping a broken sample out of the testing machine after testing in the testing machine. The jaw mechanism is movably arranged on the clamp of the testing machine, the pneumatic gripper mechanism can move the jaw mechanism as a whole out of the clamp of the testing machine, so that the broken sample can be completely removed from the clamp; the adjusting structure arranged on the jaw mechanism effectively ensures that the broken sample can be clamped in the jaw mechanism at all times, so as to be moved out as a whole; the present scheme has a convenient structure and wide applicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of testing equipment, in particular to a broken sample clamping mechanism and a testing machine. BACKGROUND

[0002] The full-automatic electronic universal testing machine is a high-precision material mechanical property testing equipment integrating machinery, electronics, sensors and computer software. It can automatically complete the tensile, compression, bending, shear, peeling and tearing tests of metal, non-metal, composite materials, plastics, rubber, textiles, medical devices and other materials through servo motor driving, high-precision sensors and computer control.

[0003] Usually, a broken sample needs to be removed after the sample test is completed. The conventional full-automatic electronic universal testing machine is provided with a set of mechanical hand at each of the lower clamp and the upper clamp to clamp the broken sample on the lower clamp and the upper clamp after the test. However, since the broken sample is usually very close to the jaw of the lower clamp or the upper clamp or even broken in the jaw, the mechanical hand at the lower clamp and the upper clamp cannot clamp the broken sample after the test, which affects the subsequent test. SUMMARY

[0004] The purpose of the present application is to provide a broken sample clamping mechanism and a testing machine to solve the problem that the broken sample cannot be clamped and removed in the prior art.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] In one aspect, the present application provides a broken sample clamping mechanism arranged on a testing machine, which comprises:

[0007] A jaw mechanism movably mounted on the testing machine and clamping a sample thereon;

[0008] A pneumatic claw mechanism having a clamping part of the jaw mechanism, clamping the jaw mechanism and moving the clamping mechanism clamping the broken sample from the testing machine after the test.

[0009] As an optional solution of the above broken sample clamping mechanism, the jaw mechanism has two oppositely arranged jaw blocks, and the two jaw blocks are structurally identical. Each jaw block has a jaw body and a clamping ear located on both sides of the jaw body. The sample is clamped between the two jaw bodies for test, and the clamping ear cooperates with the pneumatic claw mechanism to realize the clamping of the jaw mechanism by the pneumatic claw mechanism.

[0010] As an alternative to the above sample clamping mechanism, the jaw block has a rectangular prism portion and a cuboid portion arranged vertically, the bottom of the rectangular prism portion coincides with the top of the cuboid portion, and the right angle surface of the rectangular prism portion and one side surface of the cuboid portion are in the same extension plane, and the clamping ears are arranged vertically on the side surfaces on both sides of the right angle surface of the jaw block.

[0011] As an alternative to the above sample clamping mechanism, the cuboid portion of the jaw block has a through long slot inside, and the long slot is provided with an adjusting structure to facilitate the clamping of the jaw block on the sample.

[0012] As an alternative to the above sample clamping mechanism, the long slot on each jaw block is provided with a spring abutting groove at both ends, and a spring is installed in the spring abutting groove.

[0013] As an alternative to the above sample clamping mechanism, the adjusting structure has a guide pin shaft, one end of the guide pin shaft has a stop head, the other end is provided with an end cover, and the guide pin shaft is arranged through the long slot by the stop head and the end cover.

[0014] As an alternative to the above sample clamping mechanism, the spring has at least a balance spring and a tightening spring, the balance spring is sleeved on the middle section of the guide pin shaft, and the two ends of the balance spring are respectively abutted between the spring abutting grooves arranged oppositely on the two jaw blocks, and the two ends of the tightening spring are abutted between the spring abutting grooves arranged oppositely on the two jaw blocks and the stop head or the end cover.

[0015] As an alternative to the above sample clamping mechanism, the air claw mechanism has at least a sample clamping block, an air claw and a driving mechanism, one end of the air claw is connected with the sample clamping block, the other end is connected with the driving mechanism, and the sample clamping block can be clamped outside the clamping ears of the two jaw blocks arranged oppositely.

[0016] In another aspect, the present application provides a testing machine having at least a clamp, the clamp having a jaw mounting portion, the jaw mounting portion having a U-shaped mouth, two vertical sides of the U-shaped mouth having oppositely arranged inclined portions, the inclined portions being arranged in an inverted right-angle trapezoid, the top surface area of the inclined portions being greater than the bottom surface area, the inclined surface extending from the top surface to the bottom surface, the height of the inclined portions being less than the height of the U-shaped mouth, a height difference being formed between the two, a lateral slot being formed between the bottom surface of the inclined portions and the bottom surface of the U-shaped mouth; the inclined portions of the jaw mounting portion being in contact with the inclined surface of the right-angle frustum portion, and the length of the inclined surface of the jaw mounting portion being less than the length of the inclined surface of the right-angle frustum portion, so that the bottom cuboid portion of the right-angle frustum portion can extend into the lateral slot, and the jaw mechanism can slide relative to the inclined portions to clamp the sample, while the jaw mechanism can also be moved out of the U-shaped mouth of the jaw mounting portion in the horizontal direction.

[0017] As an optional solution of the testing machine, the jaw mounting portion has a mounting slot, the bottom of the jaw mechanism being arranged on the mounting slot, and the length of the mounting slot being greater than the length of the two jaw blocks after being attached, so as to form a movable distance of the jaw blocks when clamping the sample.

[0018] The present application has the following beneficial effects:

[0019] ①The jaw mechanism is movably arranged on the clamp of the testing machine, and the air claw mechanism can move the jaw mechanism as a whole out of the clamp of the testing machine, so that the broken sample can be completely removed from the clamp;

[0020] ②The adjusting structure is arranged on the jaw mechanism, which effectively ensures that the broken sample can be clamped in the jaw mechanism at all times so as to be moved out as a whole;

[0021] ③The present solution is convenient in structure and has wide applicability. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0023] Figure 1 is a structural schematic diagram of the clamp and the broken sample clamping mechanism of the testing machine of the present application;

[0024] Figure 2 is Figure 1 a three-dimensional structural schematic diagram;

[0025] Figure 3 isFigure 1 Structure diagram of the middle sample holder mechanism;

[0026] Figure 4 Structure diagram of the middle sample holder mechanism; Figure 3 Structure diagram of the middle sample holder mechanism;

[0027] Figure 5 Structure diagram of the middle sample holder mechanism; Figure 4 Structure diagram of the middle sample holder mechanism;

[0028] Figure 6 Structure diagram of the middle sample holder mechanism; Figure 4 Structure diagram of the middle sample holder mechanism;

[0029] Figure 7 Structure diagram of the middle sample holder mechanism; Figure 1 Structure diagram of the middle sample holder mechanism;

[0030] Figure 8 Structure diagram of the middle sample holder mechanism; Figure 1 Structure diagram of the middle sample holder mechanism;

[0031] Figure 9 Structure diagram of the middle sample holder mechanism; Figure 8 Structure diagram of the middle sample holder mechanism;

[0032] Figure 10 Structure diagram of the middle sample holder mechanism. Figure 8 Structure diagram of the middle sample holder mechanism.

[0033] Reference signs:

[0034] 10. Upper clamp; 11. Lower clamp; 110. Jaw mounting part; 1100. Bottom surface; 111. Inclined part; 1110. Inclined surface; 1111. Top surface; 1112. Bottom surface; 1113. Side slot; 112. Mounting slot;

[0035] 20. Jaw mechanism; 200. Jaw block; 2000. Jaw main body; 20000. Right-angle frustum part; 20001. Cuboid part; 20003. Inclined surface; 20004. Right-angle surface; 20005. Side surface; 20006. Top surface; 20007. Bottom surface; 2001. Clamping ear; 2002. Step part; 2003. Long slot; 20030. Spring abutting slot; 2004. Adjusting structure; 20040. Guide pin; 20041. Stopper; 20042. End cover; 20043. Fastening spring; 20044. Balancing spring;

[0036] 30. Air claw mechanism; 300. Air claw; 3000. Track; 3001. Guide rod structure; 301. Sample holder block; 3010. Leg; 3011. Connecting structure;

[0037] 4. Test sample. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application generally described and shown in the drawings can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0040] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0044] Embodiments of the present application are described in detail below with reference to examples shown in the attached drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0045] The present embodiment provides a sample breaking and clamping mechanism arranged on a testing machine.

[0046] As shown in the figure, the sample breaking and clamping mechanism comprises:

[0047] The jaw mechanism 20 is movably mounted on the testing machine, and the sample 4 is clamped thereon;

[0048] The air claw mechanism 30 has a clamping part of the jaw mechanism 20, clamps the jaw mechanism 20 and can move the clamping mechanism clamping the broken sample 4 out of the testing machine.

[0049] More specifically:

[0050] The jaw mechanism 20 has two jaw blocks 200 arranged oppositely, and the two jaw blocks 200 are identical in structure. Each jaw block 200 has a jaw body 2000 and a clamping lug 2001 located on both sides of the jaw body 2000. The sample 4 is clamped between the two jaw bodies 2000 for testing. The clamping lug 2001 cooperates with the air claw mechanism 30 to realize the clamping of the air claw mechanism 30 to the jaw mechanism 20.

[0051] The jaw body 2000 of each jaw block 200 has an upper and lower right prism portion 20000 and a cuboid portion 20001, the bottom of the right prism portion 20000 coincides with the top of the cuboid portion 20001, and the right face 20004 of the right prism portion 20000 and the two side faces 20005 adjacent to the right face 20004 form the same extension plane with the side faces 20005 of the cuboid portion 20001, respectively, the bottom of the inclined face 20003 of the right prism portion 20000 is connected with a planar top of the cuboid portion 20001, and the two form an obtuse angle, so that the jaw block 200 as a whole has a prism-cuboid combined polyhedral structure.

[0052] The clamping ears 2001 are vertically arranged on the two side faces 20005 adjacent to the right face 20004 of the jaw block 200. As shown in the embodiment, each jaw block 200 is provided with two clamping ears 2001, and the jaw mechanism 20 formed by the opposite arrangement of the two jaw blocks 200 has four clamping ears 2001 opposite to each other, the clamping ear 2001 has a rectangular structure, the upper plane is located in the same extension plane with the top plane of the jaw block 200, and the bottom of the clamping ear 2001 is higher than the bottom plane 20007 of the jaw block 200, that is, the height of the clamping ear 2001 is lower than the height of the jaw block 200, and a stepped portion 2002 with a height difference is formed therebetween.

[0053] It should be noted that the shape of the clamping ear 2001 in actual use can also adopt other forms, and is not limited to the cuboid structure, as long as the clamping ear 2001 can be clamped to drive the whole jaw mechanism 20 to be moved.

[0054] The cuboid portion 20001 of each jaw block 200 is internally provided with a through long groove 2003, and the long grooves 2003 of the two oppositely arranged jaw blocks 200 are located at the same position and penetrate each other when oppositely arranged, and the adjusting structure 2004 is installed in the long groove 2003 to adjust the position of the jaw block 200 when the jaw block 200 clamps the sample 4.

[0055] The adjusting structure 2004 has a guide pin shaft 20040, one end of the guide pin shaft 20040 has a stop head 20041, the other end is provided with an end cover 20042, the guide pin shaft 20040 penetrates the long grooves 2003 of the two oppositely arranged jaw blocks 200, and the guide pin shaft 20040 is installed in the long groove 2003 by penetrating the stop head 20041 and the end cover 20042.

[0056] Similarly, the long slot 2003 on each jaw block 200 is provided with a spring abutting groove 20030 at both ends, and a spring is installed in the spring abutting groove 20030; the spring at least has a balance spring 20044 and a fastening spring 20043, the balance spring 20044 is sleeved on the middle part of the guide pin shaft 20040, and the two ends of the balance spring 20044 are respectively abutted between the two spring abutting grooves 20030 oppositely arranged on the two jaw blocks 200, and the two ends of the two fastening springs 20043 are respectively abutted between the spring abutting grooves 20030 oppositely arranged on the two jaw blocks 200 and the stop head 20041 and between the spring abutting grooves 20030 and the end cover 20042.

[0057] Based on the above adjusting mechanism, when the two jaw blocks 200 clamp the sample 4, the sample 4 moves the two jaw blocks 200 along the two sides of the guide pin shaft 20040, and the adjusting structure 2004 provides a counteracting force to the two jaw blocks 200 towards the middle to clamp the sample 4, so that the sample 4 is still clamped between the two jaw blocks 200 after the test is completed.

[0058] The air claw mechanism 30 as a sample breaking clamping mechanism is used to clamp the jaw mechanism 20 externally, so that the jaw mechanism 20 as a whole moves out of the testing machine, and at least has a sample breaking clamp 301, an air claw 300 and a driving mechanism, one end of the air claw 300 is connected with the sample breaking clamp 301, the other side is connected with the driving mechanism, and the sample breaking clamp 301 can be clamped outside the clamping ears 2001 oppositely arranged on the two jaw blocks 200.

[0059] In this embodiment, the sample breaking clamp 301 adopts a U-shaped structure, two legs 3010 of the U-shaped structure are respectively clamped outside the two clamping ears 2001, the bottom of the connecting structure 3011 of the two legs 3010 is attached to the top plane 20006 of the jaw block 200, and the upper part of the connecting structure 3011 is connected to the air claw 300, the air claw 300 can adopt the existing air claw 300 structure, has a track 3000 and two guide rod structures 3001, the two guide rod structures 3001 are installed on the track 3000 and can move along the track 3000, and each guide rod structure 3001 is installed with a connecting structure 3011, and the guide rod structure 3001 can be controlled to move by the driving mechanism to drive the sample breaking clamp 301 to clamp the jaw mechanism 20.

[0060] It should be noted that the air claw mechanism 30 used in this scheme can itself adopt the air claw mechanism 30 in the prior art, so the working principle and structure of the air claw mechanism 30 itself can refer to the existing air claw mechanism 30.

[0061] The embodiment also provides a testing machine, the main body structure is same as that of a conventional testing machine, and the testing machine is different from the conventional testing machine in that the upper clamp 10 and the lower clamp 11 are structured, the upper clamp 10 and the lower clamp 11 are structured same, and the upper clamp 10 and the lower clamp 11 have a jaw mounting portion 110, the jaw mounting portion 110 has a U-shaped mouth, the two vertical sides of the U-shaped mouth have oppositely arranged inclined portions 111, the inclined portions 111 are arranged in an inverted right-angle trapezoidal shape, the area of the top surface 1111 of the inclined portion 111 is greater than the area of the bottom surface 1112, the inclined surface 1110 extends from the top surface 1111 to the bottom surface 1112, in the embodiment, the height of the inclined portion 111 is less than the height of the U-shaped mouth, a height difference is formed between the two, a lateral slot 1113 is formed between the bottom surface 1112 of the inclined portion 111 and the bottom surface 1100 of the U-shaped mouth; the inclined portion 111 of the jaw mounting portion 110 is fitted with the inclined surface 20003 of the right-angle frustum portion 20000, and the length of the inclined surface 1110 of the jaw mounting portion 110 is less than the length of the inclined surface 20003 of the right-angle frustum portion 20000, so that the bottom rectangular parallelepiped portion 20001 of the right-angle frustum portion 20000 can extend into the lateral slot 1113, and the jaw mechanism 20 can relatively slide along the inclined portion 111 to clamp the sample 4, and the jaw mechanism 20 is also convenient to move out of the U-shaped mouth of the jaw mounting portion 110 in the horizontal direction.

[0062] In addition, the U-shaped mouth of the jaw mounting portion 110 has a mounting groove 112 at the bottom, and the height difference between the bottom of the jaw block 200 and the bottom of the clamping ear 2001 is embedded and mounted in the mounting groove 112, and the bottom of the clamping ear 2001 is fitted on the surface of the bottom of the U-shaped mouth. It should be noted that the length of the mounting groove 112 is greater than the length of the two jaw blocks 200 after being fitted, so as to form a movable distance of the jaw block 200 when clamping the sample 4.

[0063] Obviously, the above only describes the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the appended claims.

[0064] Note that, in describing the present application, the description of the terms "some embodiments," "other embodiments," etc. means that the particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. Such descriptions are not necessarily referring to the same embodiment or example. Furthermore, the described features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A sample clamping mechanism, mounted on a testing machine, characterized in that, The broken sample clamping mechanism includes: A jaw mechanism, which is movably mounted on the testing machine and clamps the sample thereon; A pneumatic gripper mechanism having a clamping member of the jaw mechanism, which clamps the jaw mechanism and, during testing on the testing machine, can remove the clamping mechanism holding the fractured specimen from the testing machine; The jaw mechanism has two jaw blocks arranged opposite each other. The two jaw blocks have the same structure. Each jaw block has a jaw body and clamping ears located on both sides of the jaw body. The two jaw bodies clamp a sample for testing. The clamping ears cooperate with the pneumatic gripper mechanism to realize the gripping of the jaw mechanism by the pneumatic gripper mechanism. The jaw block has a right-angled frustum portion and a cuboid portion arranged vertically. The bottom of the right-angled frustum portion coincides with the top of the cuboid portion, and the right-angled face of the right-angled frustum portion and one side of the cuboid portion are on the same extending plane. The clamping ears are vertically arranged on the sides of the right-angled face of the jaw block. The cuboid portion of the jaw block has a through slot inside, and an adjustment structure is installed in the slot to facilitate the jaw block clamping the sample.

2. The sample clamping mechanism as described in claim 1, characterized in that, Each of the jaw blocks has a spring abutment groove at both ends of the long groove, and a spring is installed in the spring abutment groove.

3. The sample clamping mechanism as described in claim 2, characterized in that, The adjustment structure has a guide pin, one end of which has a stop and the other end is fitted with an end cap. The guide pin passes through the stop and the end cap and is disposed in the long groove.

4. The sample clamping mechanism as described in claim 3, characterized in that, The spring has at least a balance spring and a fastening spring. The balance spring is sleeved in the middle of the guide pin shaft, and both ends of the balance spring abut against the spring abutment grooves of the two jaw blocks that are arranged opposite to each other. The two ends of the fastening spring abut against the spring abutment grooves of the two jaw blocks that are arranged opposite to each other and between the stop head or the end cap.

5. The sample clamping mechanism as described in claim 1, characterized in that, The pneumatic gripper mechanism has at least a sample clamping block, a pneumatic gripper, and a driving mechanism. One end of the pneumatic gripper is connected to the sample clamping block, and the other end is connected to the driving mechanism. The sample clamping block can clamp on the outside of the clamping ears of the two opposing jaw blocks.

6. A testing machine, comprising at least a clamp, characterized in that, The clamp has a jaw mounting portion for mounting the jaw mechanism of claim 1. The jaw mounting portion has a U-shaped opening, and the two vertical sides of the U-shaped opening have opposing inclined portions. The inclined portions are arranged in an inverted right-angled trapezoidal shape. The area of ​​the top surface of the inclined portion is larger than the area of ​​the bottom surface. The inclined surface extends from the top surface to the bottom surface. The height of the inclined portion is less than the height of the U-shaped opening. The height difference between the two forms a side groove between the bottom surface of the inclined portion and the bottom surface of the U-shaped opening. The inclined portion of the jaw mounting portion fits into the inclined surface of the right-angled frustum portion, and the length of the inclined surface of the jaw mounting portion is less than the length of the inclined surface of the right-angled frustum portion. This allows the bottom cuboid portion of the right-angled frustum portion to extend into the side groove, enabling the jaw mechanism to slide relative to the inclined portion to clamp the sample, while also facilitating the jaw mechanism to move out of the U-shaped opening of the jaw mounting portion in the horizontal direction.

7. The testing machine as described in claim 6, characterized in that, The jaw mounting part has a mounting groove, the bottom of the jaw mechanism is disposed on the mounting groove, and the length of the mounting groove is greater than the length of the two jaw blocks after they are attached, so as to form a movable distance when the jaw blocks clamp the sample.

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