CN221326093U - Sample preparation device - Google Patents

Abstract

The application discloses a sample preparation device, which comprises: the fixture, fixture includes: the first clamp and the second clamp are arranged at intervals along a first direction, the first clamp is provided with a first clamping hole extending along the first direction, the first clamping hole is suitable for clamping a first test rod, the second clamp is provided with a second clamping hole extending along the first direction, the second clamping hole is suitable for clamping a second test rod, and the first clamping hole and the second clamping hole are coaxially arranged; and the driving mechanism is connected with the first clamp and used for driving the first clamp to move along the first direction. According to the sample preparation device provided by the application, samples with various specifications can be prepared, and meanwhile, the probability of dislocation in the sample preparation process can be reduced, so that the accuracy and repeatability of the structural adhesive performance test can be improved.

Description

Sample preparation device

Technical Field

The application relates to the technical field of bonding clamps, in particular to a sample preparation device.

Background

In the related art, the method for measuring the adhesive butt joint bonding strength under the action of tensile force is specified in ISO 6922, determination of adhesive-butt joint tensile strength, and GB/T6329-1996, determination of adhesive butt joint tensile strength. Before measurement, a standard sample is prepared, a sample joint is formed by butt joint of two square or round bar-shaped adherends, the cementing surface of the sample joint is perpendicular to the longitudinal axis of the sample, and the prepared sample is generally measured for shear strength or positive tensile strength on a common universal material testing machine and is usually applied with tensile load until the joint is broken. In the prior art, the samples are prepared one by one, and the alignment accuracy is poor due to individual difference of manual pressure, so that the adhesive force of each prepared sample is different, and the test authenticity is affected.

Disclosure of utility model

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application aims to provide a sample preparation device which can prepare samples with various specifications, and can reduce the probability of dislocation in the sample preparation process, so that the accuracy and repeatability of the structural adhesive property test can be improved.

The sample preparation device according to the present application comprises: clamping mechanism, clamping mechanism includes: a first clamp and a second clamp, the first clamp and the second clamp being arranged at intervals along a first direction, the first clamp having a first clamping hole extending along the first direction, the first clamping hole being adapted to clamp a first test stick, the second clamp having a second clamping hole extending along the first direction, the second clamping hole being adapted to clamp a second test stick, the first clamping hole and the second clamping hole being coaxially arranged; and the driving mechanism is connected with the first clamp and used for driving the first clamp to move along a first direction.

According to the sample preparation device, the first clamp and the second clamp are arranged at intervals, so that samples with various specifications can be prepared, and the universality of the sample preparation device can be further improved; through setting up first centre gripping hole and the coaxial arrangement of second centre gripping hole, can make first test bar and second test bar can be accurate alignment when the butt joint, and then effectively reduce the probability that the bonding piece takes place the dislocation when bonding and solidification to can improve accuracy and the repeatability of structural adhesive property test.

In some embodiments, the first clamp comprises: the clamping device comprises a first clamping block and a second clamping block, wherein a first groove is formed in the first clamping block, a second groove is formed in the second clamping block, and the first groove and the second groove are matched to form the first clamping hole.

According to the embodiment, the first clamping block and the second clamping block are arranged, so that the production difficulty of the first clamp can be reduced, the production cost of the first clamp is reduced, and the production rate of the first clamp is improved.

In some embodiments, the first clamping hole extends through the first clamp in the first direction, the first clamp comprising: and the first blocking piece is arranged on one side of the first clamp, which is away from the second clamp, and is used for blocking the first test bar from moving towards the direction away from the second clamp.

According to the embodiment, the first blocking piece is arranged, so that the first test bar can be prevented from moving towards the second test bar due to the influence of external force during operation, and the accuracy and stability of the position of the first test bar during operation can be guaranteed, so that the reliability of sample preparation can be guaranteed.

In some embodiments, the first clamp further comprises: the first base is arranged on one side, away from the second clamping block, of the first clamping block, and the driving mechanism is connected with the first base and used for driving the first clamp to move along the first direction.

According to the embodiment, the stability of the first clamp in the working process can be increased by arranging the first base, so that the alignment accuracy of the bonding surfaces of the first test bar and the second test bar can be further improved, and the probability of bonding dislocation of the sample is effectively reduced.

In some embodiments, one of the first base and the first clamping block is formed with a positioning groove, and the other is formed with a positioning protrusion, and the positioning protrusion and the positioning groove are in positioning fit.

According to the embodiment, the positioning groove is formed in one of the first base and the first clamping block, the positioning protrusion is formed in the other one of the first base and the first clamping block, and the positioning protrusion and the positioning groove are matched in a positioning manner, so that the first base and the first clamping block can be assembled, and the assembly rate of the first clamp can be improved.

In some embodiments, the second clamp comprises: the clamping device comprises a third clamping block and a fourth clamping block, wherein a third groove is formed in the fourth clamping block, a fourth groove is formed in the fourth clamping block, and the third groove and the fourth groove are matched to form the second clamping hole.

According to the embodiment, the production difficulty of the second clamp can be reduced, the production cost of the second clamp is reduced, and the production rate of the second clamp is improved by arranging the third clamp block and the fourth clamp block.

In some embodiments, the second fixture further comprises a second base, the second base is connected to one side of the third clamping block, which faces away from the fourth clamping block, a limiting groove is formed in one of the second base and the third clamping block, a limiting protrusion is formed in the other one of the second base and the third clamping block, and the limiting protrusion is matched with the limiting groove in a positioning mode.

According to the embodiment, the limiting groove is formed in one of the second base and the third clamping block, the limiting protrusion is formed in the other one of the second base and the third clamping block, and the limiting protrusion and the limiting groove are matched in a positioning mode, so that the second base and the third clamping block can be assembled, and the assembly rate of the second clamp can be improved.

In some embodiments, the second clamping hole extends through the second clamp in the first direction, the second clamp comprising: the second blocking piece is arranged on one side, away from the first clamp, of the second clamp and used for blocking the second test bar from moving in the direction away from the first clamp.

According to the embodiment, the second blocking piece is arranged, so that the second test bar can be prevented from moving towards the direction away from the first test bar due to the influence of external force during operation, and the accuracy and stability of the position of the second test bar during operation can be guaranteed, so that the reliability of sample preparation can be guaranteed.

In some embodiments, the drive mechanism comprises: the driving piece is in transmission connection with the first clamp, and the driving piece drives the first clamp to move along the first direction by driving the screw to rotate.

According to the embodiment, the first clamp is movable along the first direction by arranging the driving piece and the screw rod, so that the sample preparation device can finish preparation of a sample under accurate control, and further accurate and repeatable adhesive property test results can be obtained.

In some embodiments, the sample preparation device further comprises a nut formed with internal threads that mate with the lead screw, the nut being fixedly connected with the first clamp.

According to the embodiment, by arranging the nut, when the working performance of the sample preparation device is affected due to abrasion of the screw rod or the threads of the nut, only the nut or the screw rod can be replaced, and further the maintenance cost of the sample preparation device can be reduced.

In some embodiments, the drive member is formed as a rotating handle fixedly connected to the screw.

According to the embodiment, the driving piece is arranged to be the rotating handle, so that the structure of the sample preparation device can be simplified, the production cost of the sample preparation device is reduced, and the operation convenience of the sample preparation device is improved.

In some embodiments, the sample preparation device further comprises: the first installation seat and the second installation seat are arranged at intervals along the first direction, and two ends of the screw rod are rotatably supported on the first installation seat and the second installation seat.

According to the embodiment, the first mounting seat and the second mounting seat are arranged, so that the screw rod can stably and accurately rotate under the action of the driving piece, and further the moving stability of the first clamp along the first direction can be improved, the accuracy of butt joint of the first test bar and the second test bar can be improved, and the stability of test sample test data is improved.

In some embodiments, the second clamp is disposed on the first mount or the second mount, the first clamp being disposed between the first mount and the second mount.

According to the embodiment, the second clamp is arranged on the first mounting seat or the second mounting seat, so that the working complexity of the driving mechanism can be reduced, the operation convenience of the sample preparation device is improved, meanwhile, the accurate butt joint of the sample bonding surface is improved, and the stability of test data of the sample can be improved; through setting up first anchor clamps and arranging between first mount pad and second mount pad, can inject the removal position of first anchor clamps for first anchor clamps can not drop from the lead screw when removing, thereby can improve sample preparation device's reliability of use, simultaneously, first anchor clamps set up between first mount pad and second mount pad, can also promote sample preparation device's overall arrangement rationality, reduce sample preparation device's overall dimension.

In some embodiments, the sample preparation device further comprises: a first mount and a second mount arranged at intervals along the first direction; the guide piece extends along the first direction and is fixedly connected with the first mounting seat and the second mounting seat, and the first clamp is slidable along the guide piece in the first direction.

According to the embodiment, the guide piece is arranged, so that the moving track of the first clamp can be further limited, the moving stability of the first clamp along the first direction is improved, the alignment accuracy of the bonding surfaces of the first test bar and the second test bar can be further improved, and the probability of bonding dislocation of the sample is effectively reduced.

In some embodiments, the sample preparation device further comprises: and the displacement detection device is used for detecting the distance between the first test bar and the second test bar.

According to the embodiment, the displacement detection device is arranged, so that the influence of human factors in the experimental process on the bonding strength test result can be effectively reduced to a certain extent, the repeatability of the bonding strength test result is improved, and the experimental error is reduced.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

FIG. 1 is a schematic view of a sample preparation device according to an embodiment of the present application;

FIG. 2 is a schematic view of a sample preparation device according to an embodiment of the present application at another angle;

FIG. 3 is a schematic view of a further angle of a sample preparation device according to an embodiment of the present application;

FIG. 4 is a schematic view of a further angle of a sample preparation device according to an embodiment of the present application;

FIG. 5 is a schematic view of a sample preparation device according to an embodiment of the present application at other angles.

Reference numerals:

100. a sample preparation device;

10. A clamping mechanism; 11. a first clamp; 111. a first clamping hole; 112. a first clamping block; 1121. positioning the bulge; 113. a second clamping block; 114. a first blocking member; 115. a first base; 12. a second clamp; 121. a second clamping hole; 122. a third clamping block; 1221. a limit protrusion; 123. a fourth clamping block; 124. a second base; 125. a second blocking member;

20. a driving mechanism; 21. a driving member; 22. a screw rod;

30. A nut; 41. a first mount; 42. a second mounting base; 50. a guide member;

60. A displacement detection device; 61. a digital display displacement module; 62. a pull rod; 63. a fixing member;

201. a first test bar; 202. and a second test bar.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In describing embodiments of the present application, the term "plurality" refers to more than two (including two).

In the description of the embodiments of the present application, the positional or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the positional or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplicity of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

The method for measuring the adhesive joint bonding strength under the action of tensile force is specified in ISO 6922 adhesive-determination of the tensile strength of the joint and GB/T6329-1996 adhesive-determination of the tensile strength of the joint. Before measurement, a standard sample is prepared, a sample joint is formed by butt joint of two square or round bar-shaped adherends, the cementing surface of the sample joint is perpendicular to the longitudinal axis of the sample, and the prepared sample is generally measured for shear strength or positive tensile strength on a common universal material testing machine and is usually applied with tensile load until the joint is broken. In the prior art, the samples are prepared one by one, and the alignment accuracy is poor due to individual difference of manual pressure, so that the adhesive force of each prepared sample is different, and the test authenticity is affected.

Based on the above consideration, in order to solve the problem that the sample alignment difference leads to the data discreteness great, a sample preparation device is designed, the sample preparation device includes fixture and actuating mechanism, wherein, fixture includes first anchor clamps and second anchor clamps, form respectively on first anchor clamps and the second anchor clamps and be used for centre gripping first test bar and the first centre gripping hole and the second centre gripping hole of second test bar, and first centre gripping hole and the coaxial arrangement of second centre gripping hole, like this, can make first test bar and second test bar can be accurate alignment when the butt joint, and then effectively reduce the probability that the test bar takes place the dislocation at bonding and solidification time bonding piece, thereby accuracy and repeatability that can improve the structure glue capability test.

A sample preparation device 100 according to an embodiment of the present application is described below with reference to fig. 1-5. Figures 1-5 are schematic illustrations of different angles of a sample preparation device 100 according to one embodiment of the present application,

An embodiment of the present application provides a sample preparation device 100, as shown in fig. 1-2, comprising: a clamping mechanism 10 and a drive mechanism 20.

Wherein the clamping mechanism 10 comprises: the first clamp 11 and the second clamp 12, the first clamp 11 and the second clamp 12 are arranged at intervals along a first direction (for example, the direction of X shown in fig. 1), the first clamp 11 has a first clamping hole 111 extending along the first direction, the first clamping hole 111 is adapted to clamp a first test bar 201, the second clamp 12 has a second clamping hole 121 extending along the first direction, the second clamping hole 121 is adapted to clamp a second test bar 202, and the first clamping hole 111 and the second clamping hole 121 are coaxially arranged.

Specifically, the first clamp 11 and the second clamp 12 cooperate with each other so that the first test stick 201 and the second test stick 202 can be butted with each other, and further preparation of a sample can be achieved. The first fixture 11 and the second fixture 12 are arranged at intervals along the first direction, and it is understood that in the initial state, a certain interval can be formed between the first test bar 201 and the second test bar 202, which is beneficial to coating the structural adhesive to be detected on the adhesive joint surface of the first test bar 201 and/or the second test bar 202. It should be noted that, the thickness of the structural adhesive to be detected may be various specifications, so the sample preparation device 100 in the above embodiment may prepare samples with various specifications, and further may meet the requirements of various tests, and adapt to different structural adhesive performance evaluation standards.

The first clamping hole 111 and the second clamping hole 121 are coaxially arranged, so that the first test bar 201 and the second test bar 202 can be precisely aligned in butt joint, and the condition that the consistency of test data is poor due to dislocation of bonding pieces in bonding and curing of the test bars is effectively reduced.

A drive mechanism 20 is coupled to the first clamp 11 for driving the first clamp 11 in a first direction. Specifically, the driving mechanism 20 provides a driving force for the movement of the first fixture 11, so that the first fixture 11 can perform accurate reciprocating motion along the first direction, and further accurate butt joint of the first test bar 201 and the second test bar 202 is achieved, and preparation of a sample is completed.

Further, the driving means may include various types of driving means, such as electric, hydraulic, pneumatic or other suitable mechanical driving means.

When a sample is prepared, the first clamp 11 is driven to move in a direction away from the second clamp 12, a certain interval is formed between the first clamp 11 and the second clamp 12, then the first test bar 201 and the second test bar 202 are respectively fixed in the first clamping hole 111 and the second clamping hole 121, then structural adhesive to be detected is coated on the adhesive joint surface of the first test bar 201 or the second test bar 202 (namely, the oppositely arranged planes of the first test bar 201 and the second test bar 202), and then the driving mechanism 20 is started to drive the first test bar 201 to move towards the second test bar 202, so that the first test bar 201 and the second test bar 202 are in butt joint, and the preparation of the sample is completed.

According to the sample preparation device 100 of the embodiment of the present application, by arranging the first clamp 11 and the second clamp 12 at intervals, samples of various specifications can be prepared, and thus the versatility of the sample preparation device 100 can be increased; through setting up first centre gripping hole 111 and the coaxial arrangement of second centre gripping hole 121, can make first test bar 201 and second test bar 202 can be accurate alignment when the butt joint, and then effectively reduce the probability that the bonding piece takes place the dislocation when bonding and solidification to can improve accuracy and the repeatability of structural adhesive property test.

In some embodiments, as shown in fig. 1-2, the first clamp 11 includes: the first clamping block 112 and the second clamping block 113, wherein a first groove is formed on the first clamping block 112, a second groove is formed on the second clamping block 113, and the first groove and the second groove are matched to form a first clamping hole 111.

It is appreciated that the first clamping block 112 and the second clamping block 113 are independent modules, and can be manufactured separately, so that the manufacturing difficulty and the manufacturing cost of the first clamp 11 can be reduced.

It should be noted that, the specific shapes of the first groove and the second groove may be designed according to the specific structure of the first test bar 201, so that the first test bar 201 may be clamped in the first clamping hole 111 without shaking, thereby further increasing the accuracy of sample preparation.

By arranging the first clamping block 112 and the second clamping block 113, the production difficulty of the first clamp 11 can be reduced, the production cost of the first clamp 11 can be reduced, and the production rate of the first clamp 11 can be improved.

In some embodiments, the first clamp block 112 and the second clamp block 113 are detachably connected.

The detachable connection manner includes various manners, for example, the first clamping block 112 and the second clamping block 113 may be connected by threads, a snap connection, a pin connection, or the like.

Preferably, in the above embodiment, the first clamping block 112 and the second clamping block 113 are fixedly connected through a butterfly bolt, wherein the butterfly head of the butterfly bolt is convenient for installing and detaching the bolt by using a tool, so that the first clamping block 112 and the second clamping block 113 can be conveniently screwed and detached.

In this embodiment, the first clamping block 112 and the second clamping block 113 are detachably connected, so that the first clamp 11 can be quickly assembled and disassembled, the time for installing, debugging and maintaining equipment can be greatly saved, and the working efficiency of the tool is improved.

In some embodiments, as shown in fig. 1-2, the first clamping hole 111 penetrates the first clamp 11 in a first direction, the first clamp 11 including: the first blocking member 114 is disposed on a side of the first fixture 11 facing away from the second fixture 12, and is used for blocking the first test stick 201 from moving in a direction facing away from the second fixture 12.

Specifically, when the sample is manufactured, a layer of structural adhesive to be tested needs to be coated on the adhesive joint surface of the first test bar 201 or the second test bar 202 perpendicular to the axis of the first test bar or the second test bar 202, and then the first test bar 201 is driven towards the second test bar 202 to be in butt joint adhesion with the second test bar 202, at this time, the second test bar 202 can generate opposite thrust to the first test bar 201, so that the first test bar 201 forms a trend of moving towards the direction away from the second test bar 202, and therefore, the first blocking piece 114 is arranged on the side of the first clamp 11 away from the second clamp 12, so that the first test bar 201 can be blocked from moving towards the direction away from the second test bar 202 due to the influence of external force during operation, and the accuracy and stability of the position of the first test bar 201 during operation can be guaranteed, and the reliability of sample preparation can be guaranteed.

According to the embodiment, the first blocking piece 114 is arranged, so that the first test bar 201 can be prevented from moving towards the second test bar 202 due to the influence of external force during operation, and the accuracy and stability of the position of the first test bar 201 during operation can be guaranteed, so that the reliability of sample preparation can be guaranteed.

In some embodiments, as shown in fig. 1-2, the first fixture 11 further comprises: a first base 115, the first base 115 is arranged at a side of the first clamping block 112 facing away from the second clamping block 113, and the driving mechanism 20 is connected to the first base 115 for driving the first clamp 11 to move in the first direction.

It can be appreciated that the driving mechanism 20 drives the first fixture 11 to move along the first direction by driving the first base 115 to move, where, because the first base 115 is disposed on one side of the first clamping block 112 away from the second clamping block 113, and the first clamping block 112 and the second clamping block 113 cooperate to fix the first test bar 201, setting the first base 115 can reduce vibration of the driving mechanism 20 generated to the first clamping block 112 in the working process, and further reduce the influence of the driving mechanism 20 on the first test bar 201 in the working process, and further improve the alignment accuracy of the bonding surface of the first test bar 201 and the second test bar 202, and effectively reduce the probability of bonding dislocation of the sample.

According to the embodiment, the stability of the first clamp 11 in the working process can be increased by arranging the first base 115, so that the alignment accuracy of the bonding surfaces of the first test bar 201 and the second test bar 202 can be further improved, and the probability of bonding dislocation of the sample is effectively reduced.

In some embodiments, as shown in fig. 1-2, the first mount 115 is removably coupled to the first clamp block 112.

The detachable connection manner includes various manners, for example, the first base 115 and the first clamping block 112 may be connected by threads, a snap connection, a pin connection, a latch connection, or the like.

Preferably, the first base 115 is connected to the first clamping block 112 through a lock catch, a lower lock catch is formed on the first base 115, an upper lock catch is formed on the first clamping block 112, and the upper lock catch and the lower lock catch cooperate to fix the first clamping block 112 on the first base 115. The lock catch connection has a locking function, so that the first base 115 and the second base 124 can keep a fixed state after being connected, and further, the first clamping block 112 and the first base 115 can be effectively prevented from being separated in the working process, so that the working stability of the first clamp 11 can be improved.

In this embodiment, by providing the first base 115 and detachably connecting the first clamping block 112, when the first clamping block 112 or the first base 115 is damaged, only the first clamping block 112 or the first base 115 needs to be replaced, thereby reducing the maintenance cost of the first fixture 11; meanwhile, the first base 115 can be matched with the first clamping blocks 112 with different specifications, so that the first clamp 11 can clamp the first test bars 201 with different sizes and shapes, and the universality of the sample preparation device 100 can be improved.

In some embodiments, as shown in fig. 1-2, one of the first mount 115 and the first clamp block 112 is formed with a positioning groove, and the other is formed with a positioning protrusion 1121, the positioning protrusion 1121 and the positioning groove being in positioning engagement.

It can be appreciated that when the positioning groove is formed on the first base 115, the positioning protrusion 1121 is formed on the first clamping block 112; when the first clamping block 112 is formed with a positioning groove, the first base 115 is formed with a positioning protrusion 1121.

In this embodiment, by providing one of the first base 115 and the first clamping block 112 with a positioning groove, the other one is formed with a positioning protrusion 1121, and the positioning protrusion 1121 is matched with the positioning groove in a positioning manner, so that the assembly of the first base 115 and the first clamping block 112 is facilitated, and the assembly rate of the first clamp 11 can be improved.

In some embodiments, as shown in fig. 1-2, the second clamp 12 includes: the third clamping block 122 and the fourth clamping block 123, the fourth clamping block 123 is provided with a third groove, the fourth clamping block 123 is provided with a fourth groove, and the third groove and the fourth groove are matched to form the second clamping hole 121.

It will be appreciated that the third clamping block 122 and the fourth clamping block 123 are separate modules that can be manufactured separately, thereby reducing the difficulty and cost of manufacturing the second clamp 12.

It should be noted that, the specific shapes of the third groove and the fourth groove may be designed according to the specific structure of the second test bar 202, so that the second test bar 202 can be clamped in the second clamping hole 121 without shaking, thereby further increasing the accuracy of sample preparation.

In this embodiment, by providing the third clamping block 122 and the fourth clamping block 123, the production difficulty of the second clamp 12 can be reduced, the production cost of the second clamp 12 can be reduced, and the production rate of the second clamp 12 can be increased.

In some embodiments, as shown in fig. 1-2, the second clamp 12 further includes a second base 124, the second base 124 is connected to a side of the third clamp block 122 facing away from the fourth clamp block 123, one of the second base 124 and the third clamp block 122 has a limiting groove formed thereon, and the other has a limiting protrusion 1221 formed thereon, and the limiting protrusion 1221 and the limiting groove are in positioning engagement.

It can be appreciated that when the limiting groove is formed on the second base 124, the limiting protrusion 1221 is formed on the third clamping block 122; when the third clamping block 122 is formed with a limited groove, the second base 124 is formed with a limit protrusion 1221.

In this embodiment, by providing one of the second base 124 and the third clamping block 122 with a limiting groove, the other one is formed with a limiting protrusion 1221, and the limiting protrusion 1221 is matched with the limiting groove in a positioning manner, so that the assembly of the second base 124 and the third clamping block 122 is facilitated, and the assembly rate of the second clamp 12 can be improved.

In some embodiments, as shown in fig. 1-2, the second clamping hole 121 extends through the second clamp 12 in a first direction, the second clamp 12 comprising: and a second blocking member 125, wherein the second blocking member 125 is disposed on one side of the second fixture 12 facing away from the first fixture 11, and is used for blocking the second test stick 202 from moving towards the direction facing away from the first fixture 11.

Specifically, when the sample is manufactured, a layer of structural adhesive to be tested needs to be coated on the adhesive joint surface of the first test bar 201 or the second test bar 202 perpendicular to the axis of the first test bar or the second test bar 202, and then the first test bar 201 is driven towards the second test bar 202 to be in butt joint adhesion with the second test bar 202, at this time, the first test bar 201 can generate a thrust force to the second test bar 202, so that the second test bar 202 generates a trend of moving towards the direction away from the first test bar 201, and therefore, the second blocking piece 125 is arranged on the side of the second clamp 12 away from the first clamp 11, so that the second test bar 202 can be blocked from moving towards the direction away from the first test bar 201 due to the influence of external force during working, and the accuracy and stability of the position of the second test bar 202 during working can be further ensured, and the reliability of sample preparation can be ensured.

According to the embodiment, the second blocking piece 125 is arranged, so that the second test bar 202 can be prevented from moving towards the direction away from the first test bar 201 due to the influence of external force during operation, and the accuracy and stability of the position of the second test bar 202 during operation can be further ensured, so that the reliability of sample preparation can be ensured.

In some embodiments, as shown in fig. 1-2, the drive mechanism 20 includes: the driving piece 21 and the screw rod 22, the screw rod 22 is in transmission connection with the first clamp 11, and the driving piece 21 drives the first clamp 11 to move along the first direction by driving the screw rod 22 to rotate.

Specifically, the driving member 21 is a member for providing a driving force for the movement of the first fixture 11, wherein the driving member 21 may be a driving motor, or may be another member capable of providing a driving force, for example, the driving member 21 may be a driving handle, and the driving force is provided manually.

The screw 22 is a transmission auxiliary part for changing the rotary motion into the linear motion, wherein the screw 22 is in transmission connection with the first clamp 11, and thus the driving piece 21 can drive the screw 22 to rotate so as to realize the reciprocating motion of the first clamp 11 along the first direction. Further, the screw rod 22 has higher precision, and then the screw rod 22 is in transmission connection with the first clamp 11 to realize the movement of the first clamp 11 in the first direction, so that the moving position of the first clamp 11 can be accurately positioned, further, the consistency of a plurality of groups of samples is improved, and further, the consistency and the repeatability of the bonding strength test result can be improved.

The screw rod 22 is in transmission connection with the first clamp 11, and may be a threaded portion adapted to an external thread of the screw rod 22 directly formed on the first clamp 11, or may be another member engaged with the external thread of the screw rod 22 fixed on the first clamp 11, and the first clamp 11 is in transmission connection with the screw rod 22 through this member.

In this embodiment, the driving member 21 and the screw 22 are provided to enable the first fixture 11 to be movable along the first direction, so that the sample preparation device 100 can complete preparation of the sample under precise control, thereby being beneficial to obtaining a more accurate and repeatable adhesion performance test result.

In some embodiments, as shown in fig. 1-2, the sample preparation device 100 further comprises a nut 30, the nut 30 being formed with internal threads that mate with the lead screw 22, the nut 30 being fixedly connected to the first clamp 11.

It can be understood that, when the sample preparation device 100 is in operation, the driving member 21 first drives the screw 22 to rotate, and the screw 22 rotates to drive the nut 30 to do linear motion along the axial direction of the screw 22, and the nut 30 is fixedly connected with the first fixture 11, so that the first fixture 11 does linear motion along the axial direction of the screw 22. Wherein the axial direction of the screw 22 is the first direction.

In this embodiment, by providing the nut 30, when the screw thread of the screw rod 22 or the nut 30 is worn to affect the working performance of the sample preparation device 100, only the nut 30 or the screw rod 22 may be replaced, so that the maintenance cost of the sample preparation device 100 may be reduced.

In some embodiments, as shown in fig. 1-2, the driving member 21 is formed as a rotating handle that is fixedly connected to the screw 22.

The driving member 21 is formed as a rotating handle, and it is understood that the driving manner of the driving mechanism 20 is manual driving, the power source of the driving mechanism 20 is manual, and the sample preparation device 100 drives the screw 22 to rotate by manually rotating the rotating handle so as to move the first clamp 11 along the first direction. Wherein, manual drive's structure is relatively simple, and the cost is lower, and the operation is convenient, and then drive piece 21 forms to twist grip, can simplify the structure of sample preparation device 100, reduces sample preparation device 100 manufacturing cost, improves sample preparation device 100's operation convenience.

In this embodiment, the driving member 21 is a rotating handle, so that the structure of the sample preparation device 100 can be simplified, the production cost of the sample preparation device 100 can be reduced, and the convenience in operation of the sample preparation device 100 can be improved.

In some embodiments, as shown in fig. 1-2, the sample preparation device 100 further comprises: the first mounting seat 41 and the second mounting seat 42 are arranged at intervals along the first direction, and two ends of the screw 22 are rotatably supported on the first mounting seat 41 and the second mounting seat 42.

It will be appreciated that the first mounting seat 41 and the second mounting seat 42 provide a fixed supporting function for the screw 22, so that the screw 22 will not shake during rotation, and thus the movement stability of the first clamp 11 in the first direction can be improved. It should be noted that, the two ends of the screw 22 may be rotatably supported on the first mounting seat 41 and the second mounting seat 42 through bearings.

According to the embodiment, the first mounting seat 41 and the second mounting seat 42 are arranged, so that the screw rod 22 can stably and accurately rotate under the action of the driving piece 21, and further the moving stability of the first clamp 11 along the first direction can be improved, the accuracy of butt joint of the first test bar 201 and the second test bar 202 can be improved, and the stability of test sample test data is improved.

In some embodiments, as shown in fig. 1-2, the second clamp 12 is disposed on the first mount 41 or the second mount 42, and the first clamp 11 is disposed between the first mount 41 and the second mount 42.

Wherein the "the second clamp 12 is disposed on the first mount 41 or the second mount 42" is intended to mean that the second clamp 12 is fixed, and the second clamp 12 is formed as a fixed end of the sample preparation device 100, so that the second clamp 12 can provide a stable reference point for the materials to be bonded, which is beneficial to maintaining accurate alignment of the bonding surfaces, and at the same time, the second clamp 12 is formed as a fixed end, which can reduce the complexity of the operation of the driving mechanism 20, and improve the operation convenience of the sample preparation device 100.

By "the first jig 11 is disposed between the first mount 41 and the second mount 42" is intended to mean that the first jig 11 is movable along the screw 22 between the first mount 41 and the second mount 42, so that the moving position of the first jig 11 can be defined so that the first jig 11 does not fall from the screw 22 when moving, whereby the reliability of use of the sample preparation apparatus 100 can be improved, and at the same time, the first jig 11 is disposed between the first mount 41 and the second mount 42, and the layout rationality of the sample preparation apparatus 100 can also be improved, reducing the overall size of the sample preparation apparatus 100.

In this embodiment, the second fixture 12 is disposed on the first mounting seat 41 or the second mounting seat 42, so that the complexity of the operation of the driving mechanism 20 can be reduced, the operation convenience of the sample preparation device 100 is improved, and meanwhile, the accurate butt joint of the sample bonding surface is improved, so that the stability of the test data of the sample can be improved; by arranging the first jig 11 between the first mount 41 and the second mount 42, the moving position of the first jig 11 can be defined so that the first jig 11 does not fall from the screw 22 when moving, thereby making it possible to improve the reliability of use of the sample preparation device 100, and at the same time, the first jig 11 is arranged between the first mount 41 and the second mount 42, and also makes it possible to improve the layout rationality of the sample preparation device 100, reducing the overall size of the sample preparation device 100.

In some embodiments, as shown in fig. 1-5, the sample preparation device 100 further comprises: the first fixture 11 is slidably arranged along the guide member 50 in the first direction, and the guide member 50 extends along the first direction and is fixedly connected with the first mounting seat 41 and the second mounting seat 42.

It will be appreciated that the guide 50 may act as a guide for the first clamp 11 such that the first clamp 11 is able to slide smoothly in the first direction without shifting. It should be noted that the guide member 50 may be a linear guide rail, a ball screw, an optical axis, or other similar linear guide system.

According to the embodiment, the guide piece 50 is arranged, so that the moving track of the first clamp 11 can be further limited, the moving stability of the first clamp 11 along the first direction is improved, the alignment accuracy of the bonding surfaces of the first test bar 201 and the second test bar 202 can be further improved, and the probability of bonding dislocation of the sample is effectively reduced.

In some embodiments, as shown in fig. 1-5, the sample preparation device 100 further comprises: and a displacement detecting device 60, the displacement detecting device 60 being configured to detect a distance between the first test stick 201 and the second test stick 202.

In particular, the displacement detection device 60 is a device for accurately measuring changes in the position (i.e., displacement) of an object, such devices being capable of converting physical displacement into electrical signal output for real-time monitoring by a control system and making accurate control decisions based thereon. Thus, when preparing the sample, the displacement detecting device 60 can detect the distance between the first test bar 201 and the second test bar 202 in real time, and when the distance between the first test bar 201 and the second test bar 202 reaches a predetermined value, the movement of the first clamp 11 is stopped, thereby ensuring the consistency of the thickness of the structural adhesive of the sample, and improving the stability and repeatability of the adhesive strength test result.

The displacement detection device 60 is arranged, so that the influence of human factors in the experimental process on the bonding strength test result can be effectively reduced to a certain extent, the repeatability of the bonding strength test result is improved, and the experimental error is reduced.

In some embodiments, the displacement detection device 60 is a digital display device.

The digital display device is a displacement measuring device consisting of a displacement sensor and a digital display instrument.

Preferably, as shown in fig. 5, for example, the digital display device includes a digital display displacement module 61, a pull rod 62 and a fixing member 63, wherein the pull rod 62 extends along a first direction, the fixing member 63 includes two pull rods 62, the pull rod 62 is fixedly connected with the first mounting seat 41 and the second mounting seat 42 through the fixing member 63, the digital display displacement module 61 is fixedly connected with the first base 115, and is slidable along the pull rod 62 along the first direction, and the pull rod 62 is formed as the guide member 50 of the sample preparation device 100.

In this embodiment, by setting the displacement detection device 60 as a digital display device, the displacement information between the first test bar 201 and the second test bar 202 can be converted into a digital signal, and the digital signal is directly displayed through a display screen, so that the visual digital reading of the displacement can be realized, and therefore, the convenience and accuracy of the distance control between the first test bar 201 and the second test bar 202 can be greatly improved.

A sample preparation device 100 according to an embodiment of the present application will be described below with reference to fig. 1 to 5.

Referring to fig. 1 and 2, a sample preparation apparatus 100 includes: the clamping mechanism 10, the driving mechanism 20, the nut 30, the first mount 41, the second mount 42, the guide 50, and the displacement detection device 60.

The driving mechanism 20 includes a screw 22 and a driving handle, the screw 22 extends along a first direction X, two ends of the screw 22 are rotatably connected with the first mounting seat 41 and the second mounting seat 42 through bearings, and the driving handle is fixedly connected to one end of the screw 22 and is used for driving the screw 22 to rotate.

The clamping mechanism 10 includes a first clamp 11 and a second clamp 12, the second clamp 12 is fixed on a first mounting seat 41, and the first clamp 11 is disposed between the first mounting seat 41 and a second mounting seat 42 and is connected to the screw 22 through a nut 30 so as to be movable along a first direction X.

Wherein the first clamp 11 and the second clamp 12 are used for clamping the first test stick 201 and the second test stick 202, respectively. Specifically, the first fixture 11 includes a first clamping block 112 and a second clamping block 113, where the first clamping block 112 has a first groove formed thereon, the second clamping block 113 has a second groove formed thereon, and the first clamping block 112 and the second clamping block 113 cooperate to form a first clamping hole 111 extending along the first direction X for clamping the first test bar 201. The second clamp 12 includes a third clamping block 122 and a fourth clamping block 123, wherein a third groove is formed on the third clamping block 122, a fourth groove is formed on the fourth clamping block 123, and the third clamping block 122 and the fourth clamping block 123 cooperate to form a second clamping hole 121 extending along the first direction X for clamping the second test bar 202. In addition, the first clamping block 112 is detachably connected with the second clamping block 113 through a butterfly bolt, and the third clamping block 122 is detachably connected with the fourth clamping block 123 through a butterfly bolt.

Further, the first fixture 11 further includes a first base 115, where the first base 115 is detachably connected to the first clamping block 112 through a lock, and is in driving connection with the screw 22 through a nut 30, specifically, a thread engaged with the screw 22 is formed on the nut 30, and the nut 30 is sleeved on the screw 22 and is fixedly connected to the first base 115. The second clamp 12 further includes a second mount 124, and the second clamp 12 is secured to the first mount 41 by the second mount 124.

In addition, the first fixture 11 and the second fixture 12 further include a first blocking member 114 and a second blocking member 125, where the first blocking member 114 is fixed on a side of the first clamping block 112 away from the second fixture 12 and is used for blocking the first test bar 201 from moving towards a direction away from the second test bar 202, and the second blocking member 125 is fixedly connected on a side of the third clamping block 122 away from the first fixture 11 and is used for blocking the second test bar 202 from moving towards a direction away from the first test bar 201.

The displacement detection device 60 is a digital display device and comprises a digital display displacement module 61, a pull rod 62 and a fixing piece 63, wherein the pull rod 62 extends along a first direction X to form a guide piece 50 of the sample preparation device 100; the fixing parts 63 include two fixing parts 63, two ends of the pull rod 62 are respectively and fixedly connected with the first mounting seat 41 and the second mounting seat 42 through the fixing parts 63, and the digital display displacement module 61 is fixedly connected with the first base 115 and can slide along the pull rod 62.

When preparing a sample, first, the first test bar 201 and the second test bar 202 are respectively fixed in the first clamping hole 111 and the second clamping hole 121, then the structural adhesive to be detected is coated on the cementing surface of the first test bar 201 or the second test bar 202 (namely, the oppositely arranged plane of the first test bar 201 and the second test bar 202), and then the driving mechanism 20 is started to drive the first test bar 201 to move towards the second test bar 202, so that the first test bar 201 and the second test bar 202 are in butt joint, and the preparation of the sample is completed.

According to the sample preparation device 100 of the embodiment of the present application, by arranging the first clamp 11 and the second clamp 12 at intervals, samples of various specifications can be prepared, and thus the versatility of the sample preparation device 100 can be increased; through setting up first centre gripping hole 111 and the coaxial arrangement of second centre gripping hole 121, can make first test bar 201 and second test bar 202 can be accurate alignment when the butt joint, and then effectively reduce the probability that the bonding piece takes place the dislocation when bonding and solidification to can improve accuracy and the repeatability of structural adhesive property test.

One comparative example one will be briefly described below and will be regarded as a comparative example of the above-described embodiment of the present application.

The sample of the first comparative example is manually butted, and the size, the glue layer thickness and the sample material of the sample of the first comparative example are consistent with those of the sample of the first embodiment.

Test experiments are performed below for examples and comparative examples.

The test procedure was as follows:

Symmetrically fixing the sample on a clamping device of a tension machine, starting the tension machine, and stretching the sample in a constant load loading or clamping device constant displacement mode until the sample is destroyed.

The test results of the tensile strength of the test pieces are shown in Table 1, in which the test pieces are each of ten groups.

TABLE 1

The above test results show that the tensile strength of the first comparative example was poor in uniformity and the tensile strength was poor, whereas the tensile strength of the test sample using the first embodiment of the present application was high in uniformity and the tensile strength was also improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A sample preparation device, comprising:

-a clamping mechanism (10), the clamping mechanism (10) comprising: -a first clamp (11) and a second clamp (12), the first clamp (11) being arranged at intervals from the second clamp (12) along a first direction, the first clamp (11) having a first clamping hole (111) extending along the first direction, the first clamping hole (111) being adapted to clamp a first test stick (201), the second clamp (12) having a second clamping hole (121) extending along the first direction, the second clamping hole (121) being adapted to clamp a second test stick (202), the first clamping hole (111) and the second clamping hole (121) being arranged coaxially;

The driving mechanism (20) is connected with the first clamp (11) and is used for driving the first clamp (11) to move along a first direction;

And a displacement detection device (60), wherein the displacement detection device (60) is used for detecting the distance between the first test bar (201) and the second test bar (202).

2. The sample preparation device according to claim 1, wherein the first clamp (11) comprises: the clamping device comprises a first clamping block (112) and a second clamping block (113), wherein a first groove is formed in the first clamping block (112), a second groove is formed in the second clamping block (113), and the first groove and the second groove are matched to form the first clamping hole (111).

3. The sample preparation device according to claim 1, wherein the first clamping hole (111) penetrates the first clamp (11) in the first direction, the first clamp (11) comprising: and the first blocking piece (114) is arranged on one side of the first clamp (11) away from the second clamp (12) and used for blocking the first test bar (201) from moving towards the direction away from the second clamp (12).

4. The sample preparation device according to claim 2, wherein the first clamp (11) further comprises: the first base (115), first base (115) is arranged in first clamp splice (112) face away from one side of second clamp splice (113), actuating mechanism (20) with first base (115) links to each other, is used for driving first anchor clamps (11) follow first direction removes.

5. The sample preparation device according to claim 4, wherein one of the first base (115) and the first clamping block (112) is formed with a positioning groove, and the other is formed with a positioning protrusion (1121), and the positioning protrusion (1121) and the positioning groove are in positioning engagement.

6. The sample preparation device according to claim 1, wherein the second clamp (12) comprises: the clamping device comprises a third clamping block (122) and a fourth clamping block (123), wherein a third groove is formed in the fourth clamping block (123), a fourth groove is formed in the fourth clamping block (123), and the third groove and the fourth groove are matched to form the second clamping hole (121).

7. The sample preparation device according to claim 6, wherein the second clamp (12) further comprises a second base (124), the second base (124) is connected to a side of the third clamping block (122) facing away from the fourth clamping block (123), a limiting groove is formed on one of the second base (124) and the third clamping block (122), a limiting protrusion (1221) is formed on the other, and the limiting protrusion (1221) is in positioning fit with the limiting groove.

8. The sample preparation device according to claim 1, wherein the second clamping hole (121) penetrates the second clamp (12) in the first direction, the second clamp (12) comprising: and the second blocking piece (125) is arranged on one side of the second clamp (12) away from the first clamp (11) and used for blocking the second test bar (202) from moving towards the direction away from the first clamp (11).

9. The sample preparation device according to claim 1, wherein the drive mechanism (20) comprises: the driving piece (21) and the screw rod (22), the screw rod (22) is in transmission connection with the first clamp (11), and the driving piece (21) drives the first clamp (11) to move along the first direction by driving the screw rod (22) to rotate.

10. The sample preparation device according to claim 9, further comprising a nut (30), said nut (30) being formed with an internal thread adapted to said screw (22), said nut (30) being fixedly connected to said first clamp (11).

11. The sample preparation device according to claim 9, characterized in that the drive member (21) is formed as a turning handle which is fixedly connected to the screw (22).

12. The sample preparation device of claim 9, further comprising: and the two ends of the screw rod (22) are rotatably supported on the first mounting seat (41) and the second mounting seat (42).

13. The sample preparation device according to claim 12, wherein the second clamp (12) is arranged on the first mount (41) or the second mount (42), the first clamp (11) being arranged between the first mount (41) and the second mount (42).

14. The sample preparation device of claim 1, further comprising:

A first mount (41) and a second mount (42) arranged at intervals along the first direction;

The guide piece (50) extends along the first direction and is fixedly connected with the first mounting seat (41) and the second mounting seat (42), and the first clamp (11) is slidable along the guide piece (50) in the first direction.