Device for detecting shearing strength of epoxy structural adhesive

Abstract

The utility model discloses an epoxy structural adhesive shearing strength detection device which comprises two vertical frame bodies arranged side by side, a fixed plate and a movable plate are horizontally arranged between the two frame bodies, the fixed plate is arranged at the tops of the frame bodies, and the fixed plate is located above the movable plate; clamping assemblies are arranged on the fixed plate and the movable plate; the clamping assembly comprises a fixed rod inserted in the middle of the fixed plate and the middle of the movable plate. The tooth-free gear is driven by the push rod to rotate, the rack can be driven to move in a more labor-saving mode, so that acting force is applied to the two chucks, the chucks are forced to slide in the groove bodies under the cooperation of the inclined grooves and the sliding rods, the clamping force of the chucks on the clamping plates is larger, and the clamping effect is better. The clamping plate is stably clamped and fixed by matching with an anti-skid structure on the clamping plate, so that errors of measured data caused by falling or deviation when the shearing strength of the structural adhesive is detected can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection equipment, specifically relates to an epoxy structural adhesive shear strength detection device. BACKGROUND

[0002] Epoxy structural adhesive is a kind of solvent-free, liquid epoxy resin bonding agent. It can be cured at room temperature or heated, and after curing, it shows excellent adhesion to metals, ceramics, vulcanized rubber, glass fiber and carbon fiber and other materials. In addition, epoxy structural adhesive process is simple, and it is suitable for electronic industry, hardware ornaments, sporting goods, building industry and other fields, and it is an important adhesive for realizing firm connection between different properties materials.

[0003] In order to ensure the bonding firmness between materials, the shear strength of epoxy structural adhesive when applied to products needs to be detected during preparation. Through detection, it can ensure that the performance of epoxy structural adhesive under different materials, different curing conditions and different environmental temperature and humidity meets the expectation, so as to ensure the quality and safety of products, and avoid safety hazards and economic losses caused by adhesive failure in actual use.

[0004] Patent CN211877611 U discloses a kind of adhesive material shear performance test fixture, including two clamping plates for clamping adhesive material and mounting piece respectively mounting two clamping plates on target device, each mounting piece is set to correspond to one clamping plate, each mounting piece is provided with anti-slip structure between clamping plate, to realize that mounting piece and clamping plate do not slide between during testing, so as to improve the accuracy and safety of test.

[0005] But in the above technical scheme, since the clamping plate lacks a special fixing clamp, even if the anti-slip structure is designed on the clamping plate, the clamping force of the clamp may be insufficient or the fitting gap generated during clamping may be too large, which may cause the clamp and the clamping plate to deviate or even fall off during the test, and further cause detection failure or deviation of the accuracy of tensile strength data. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of epoxy structural adhesive shear strength detection device, to solve the technical problem that epoxy structural adhesive shear strength detection device in prior art, clamp and clamping plate deviate or even fall off between during testing, and further cause detection failure or deviation of the accuracy of tensile strength data.

[0007] The purpose of the utility model can be realized by the following technical solutions:

[0008] The utility model provides an epoxy structural adhesive shear strength detection device, including two vertical and side by side arrangement frame body, the horizontal setting of fixed plate and moving plate between two frame bodies, the fixed plate sets up at the top of frame body, and the fixed plate is located moving plate top, is provided with clamping assembly on fixed plate and moving plate, clamping assembly includes the fixed rod of inserting in the middle part of fixed plate and moving plate, the end of mutual approach of two fixed rods is provided with deep groove, and the inside movable joint of deep groove has inserted rod, the end of inserted rod away from deep groove is fixedly connected with the sleeve of clamping, the sleeve surface is provided with groove, and the upper part of groove presents rectangular structure, and the lower part presents isosceles trapezoidal structure, the upper part of groove is fixedly connected with fixed block through bolt, and the fixed block is composed of semicircle and rectangle, the middle of fixed block is provided with the notch, the semicircle of fixed block is fixedly connected with the articulated rod, the articulated rod is rotatably connected with the gear, the gear is fixedly connected with the push rod, the inside movable setting of groove is provided with rack corresponding to the position of notch, the end of rack away from fixed block is fixedly connected with the adjusting block through connecting rod, the inside of groove is still slidably provided with two chucks with two side inner walls of groove, the inside of groove is still provided with two inclined grooves through sleeve, the lower surface of two chucks is fixedly connected with slide rod respectively corresponding to the position of inclined groove.

[0009] Further, the side of mutual approach of two chucks is fixedly connected with sawtooth respectively.

[0010] Further, the side of mutual approach of two frame bodies is provided with two symmetrical slide grooves, and the two ends of fixed plate and moving plate are arranged in the slide groove of two frame bodies, and the fixed plate is fixedly connected with the frame body, and the moving plate is slidably connected in the slide groove.

[0011] Further, the inside of one slide groove is rotatably connected with the lead screw, and the lead screw is vertically arranged, the bottom of slide groove is provided with motor, and the output end of motor is fixedly connected with the lead screw, the inside of the other slide groove is provided with guide rod, and the both ends of guide rod are fixedly connected with the both ends of slide groove, one end of moving plate is threadedly connected with the lead screw, and the other end is slidably connected with the guide rod, and the lead screw and guide rod all penetrate through fixed plate.

[0012] Further, the both ends of slide groove are provided with telescopic cover, and the both ends of telescopic cover are connected with the both ends of slide groove.

[0013] Further, the end of fixed rod is provided with screw thread, the nut is threadedly connected with the position corresponding to the upper surface of fixed plate or the lower surface of moving plate, and the fixed block is fixedly connected with the position corresponding to the lower surface of fixed plate or the upper surface of moving plate.

[0014] Further, the pin is arranged through the position corresponding to the lower side of fixed block of fixed rod, and the pin is perpendicular to the fixed rod, and the multiple round holes are arranged on the inserted rod, and the pin is inserted in one of the round holes.

[0015] Further, the width of the rack is consistent with the width of the cut; the collet is provided with a limiting slot corresponding to the position of the adjusting block.

[0016] Further, the collet is provided with a baffle corresponding to the middle of the two collets, and the baffle is fixed on the collet by screws.

[0017] The beneficial effects of the present application are:

[0018] 1) The present application improves the clamping assembly in the epoxy structural adhesive shear strength detection device. The toothed rack is driven to move in a more labor-saving manner by using the push rod to drive the gear with missing teeth to rotate, thereby exerting force on the two collets, so that the collets are forced to slide in the groove body under the cooperation of the inclined groove and the slide rod, and the clamping force of the collets on the clamping plate is greater, and the stable clamping and fixing of the clamping plate are realized by cooperating with the anti-slip structure on the clamping plate, solving the problem that the clamp and the clamping plate fall off or deviate in the prior art epoxy structural adhesive shear strength detection device during testing, resulting in errors in measurement data.

[0019] 2) The present application improves the collet in the clamp. The sawtooth is arranged on one side of the two collets, which can further cooperate with the anti-slip structure to reduce the fitting gap between the collet and the clamping plate, thereby improving the clamping stability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. 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 creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a sectional view of the overall structure of the present application;

[0023] Figure 3 It is a front view of the present application;

[0024] Figure 4 It is Figure 3 It is a local enlarged view of A in the middle;

[0025] Figure 5 It is an explosion view of the collet in the present application;

[0026] In the drawings, the components represented by each reference number are listed as follows:

[0027] 1, frame; 2, sliding groove; 3, guide rod; 4, screw rod; 5, motor; 6, telescopic cover; 7, fixed plate; 8, moving plate; 9, fixed rod; 10, deep groove; 11, plug rod; 12, round hole; 13, pin; 14, limit block; 15, nut; 16, clamp sleeve; 17, fixed block; 18, notch; 19, gear; 20, rack; 21, adjusting block; 22, inclined groove; 23, connecting rod; 24, baffle; 25, screw; 26, chuck; 27, sawtooth; 28, hinged rod; 29, limiting groove; 30, sliding rod; 31, push rod; 32, groove body. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Please refer to Figure 1 Figure 2 As shown in FIG. 1, an epoxy structural adhesive shear strength detection device includes two vertically and side-by-side arranged frame bodies 1, which are rectangular structures; a gap is left between the two frame bodies 1; two open sliding grooves 2 are symmetrically formed on one side of each frame body 1, and the width of the sliding groove 2 is half the width of the frame body 1; a screw rod 4 is rotatably connected inside one of the sliding grooves 2, the screw rod 4 is longitudinally arranged, and the length of the screw rod 4 is consistent with the length of the sliding groove 2; a motor 5 is arranged at the bottom of the screw rod 4, and the output end of the motor 5 is fixedly connected with the screw rod 4; a guide rod 3 is arranged inside the other sliding groove 2, and the two ends of the guide rod 3 are fixedly connected with the inner walls of the two ends of the sliding groove 2.

[0030] A fixed plate 7 and a moving plate 8 are horizontally arranged between the two frame bodies 1, the fixed plate 7 is arranged at the top of the frame body 1, and the fixed plate 7 is located above the moving plate 8; the two ends of the fixed plate 7 and the moving plate 8 are arranged inside the sliding grooves 2 formed on the two frame bodies 1, and the fixed plate 7 is fixedly connected with the frame body 1, and the moving plate 8 is slidingly connected in the sliding groove 2; one end of the moving plate 8 is threadedly connected with the screw rod 4, and the other end is slidingly connected with the guide rod 3; the screw rod 4 and the guide rod 3 both penetrate through the fixed plate 7.

[0031] Telescopic covers 6 are arranged at the openings of the two sliding grooves 2, and the upper and lower ends of the telescopic cover 6 are connected with the upper and lower ends of the sliding groove 2, respectively, and the telescopic cover 6 is used to prevent dust from entering the inside of the sliding groove 2.

[0032] Please refer to Figure 2 Figure 3 and Figure 4 ​​As shown, the fixed plate 7 and the moving plate 8 are provided with clamping assemblies; the clamping assembly comprises a fixed rod 9 inserted in the middle of the fixed plate 7 and the moving plate 8, the end of the fixed rod 9 is provided with a screw thread; the fixed rod 9 is threadedly connected with a nut 15 corresponding to the position of the upper surface of the fixed plate 7 or the lower surface of the moving plate 8; the fixed rod 9 is fixedly connected with a limiting block 14 corresponding to the position of the lower surface of the fixed plate 7 or the upper surface of the moving plate 8, the limiting block 14 is used to help fix the fixed rod 9; the end of the two fixed rods 9 close to each other is provided with a deep groove 10, the deep groove 10 is movably connected with a plug rod 11; the fixed rod 9 is provided with a pin 13 corresponding to the position below the limiting block 14, and the pin 13 is perpendicular to the fixed rod 9; the plug rod 11 is provided with a plurality of round holes 12, and the pin 13 is inserted into one of the round holes 12.

[0033] As shown in Figure 4 and Figure 5 As shown, the end of the plug rod 11 away from the deep groove 10 is fixedly connected with a clamping sleeve 16, the clamping sleeve 16 is a circular structure; the clamping sleeve 16 is provided with a groove 32, the upper part of the groove 32 is a rectangular structure, and the lower part is a trapezoidal structure; the upper part of the groove 32 is fixedly connected with a fixed block 17 through a bolt, the fixed block 17 is composed of a semicircular part and a rectangular part; the fixed block 17 is provided with a cutout 18 in the middle; the semicircular part of the fixed block 17 is fixedly connected with a hinge rod 28; the hinge rod 28 is rotatably connected with a gear 19, the gear 19 is a gear with missing teeth; the gear 19 is fixedly connected with a push rod 31, the push rod 31 is used to control the rotation of the gear 19.

[0034] The inside of the groove 32 is movably provided with a rack 20 corresponding to the position of the cutout 18, the width of the rack 20 is consistent with the width of the cutout 18, which can prevent the rack 20 from shaking left and right, so that the rack 20 always maintains a central position; the gear 19 and the rack 20 are meshed with each other; the end of the rack 20 away from the fixed block 17 is fixedly connected with an adjusting block 21 through a connecting rod 23; the inside of the groove 32 is also slidably provided with two clamps 26 on the inner walls of the groove 32; the clamp 26 is provided with a limiting groove 29 corresponding to the position of the adjusting block 21, the limiting groove 29 and the adjusting block 21 are used together to drive the clamp 26 to move.

[0035] The inside of the groove 32 is also provided with two inclined grooves 22 penetrating the clamping sleeve 16; the lower surfaces of the two clamps 26 are respectively fixedly connected with a sliding rod 30 corresponding to the position of the inclined grooves 22, the sliding rod 30 is slidably connected with the inclined grooves 22; the surfaces of the two clamps 26 close to each other are respectively fixedly connected with a sawtooth 27, which increases the friction between the clamp 26 and the clamped object, and increases the clamping force of the clamp.

[0036] The clamping sleeve 16 is provided with a baffle 24 corresponding to the middle of the two clamps 26, the baffle 24 is fixed on the clamping sleeve 16 through a screw 25, which is used to prevent the clamp 26 from falling out of the clamping sleeve 16 during use.

[0037] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is explained in detail as follows:

[0038] In the use process, the staff can first bond two clamping plates by using epoxy structural adhesive, then operate the clamping assembly on the fixed plate 7, press the push rod 31 on the gear 19 inside the groove body 32 downward, because the gear 19 and the rack 20 are mutually engaged, the push rod 31 downward pressing will drive the gear 19 to rotate clockwise, thereby driving the rack 20 to slowly move upward; the end of the rack 20 away from the fixed block 17 is fixedly connected with the adjusting block 21 through the connecting rod 23, the adjusting block 21 is located in the limiting groove 29 opened on the collet 26, the upward movement of the rack 20 drives the collet 26 to move upward, thereby making the collet 26 open, which is convenient for the staff to place one of the two bonded clamping plates between the two collets 26 for clamping; after placing the clamping plate, the staff can operate the push rod 31 again, push the push rod 31 upward, drive the rack 20 to slowly move downward, thereby driving the collet 26 to slowly and closely combine, so that the collet 26 clamps the clamping plate;

[0039] After the staff operates the clamping assembly on the fixed plate 7, the switch can be pressed, the motor 5 is started, the screw rod 4 is rotated, the moving plate 8 is driven to approach the fixed plate 7, after moving to the appropriate position, the clamping assembly on the fixed plate 7 is adjusted, the same operation steps are performed, so that the collet 26 on the moving plate 8 clamps and fixes the other clamping plate;

[0040] At this time, because the two clamping plates bonded by the structural adhesive are fixed by the collets 26 on the fixed plate 7 and the moving plate 8, the moving plate 8 can be driven away from the fixed plate 7 by reversing the motor 5, so that the two clamping plates are away from each other, thereby detecting the shear strength of the structural adhesive, ensuring the production quality of the structural adhesive, and avoiding resource waste.

[0041] The utility model drives the rack 20 to move in a more labor-saving way by driving the toothless gear 19 to rotate through the push rod 31, thereby exerting force on the two collets 26, so that the collet 26 is forced to slide in the groove body 32 under the cooperation of the inclined groove 22 and the sliding rod 30, thereby making the clamping force of the collet 26 on the clamping plate greater, and realizing stable clamping and fixing of the clamping plate in cooperation with the anti-slip structure on the clamping plate, which can avoid falling or deviation when detecting the shear strength of the structural adhesive, so as to avoid errors in measurement data.

[0042] Further, by setting the sawtooth 27 on the side of the two collets 26 close to each other, the clamping stability can be further improved in cooperation with the anti-slip structure by reducing the fitting gap between the collet 26 and the clamping plate.

[0043] In addition, the fixed rod 9 and the fixed plate 7 or the moving plate 8 are all in threaded connection, when the clamping assembly is damaged, can be conveniently disassembled and overhauled.

[0044] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements or replace with similar ways, as long as it does not deviate from the structure of the utility model or beyond the scope defined by the claims, which shall belong to the protection scope of the utility model.

Claims

1. An apparatus for detecting the shear strength of epoxy structural adhesive, comprising two vertically and side-by-side arranged frame bodies (1), characterized in that: Two frame bodies (1) are horizontally provided with a fixed plate (7) and a moving plate (8), and the fixed plate (7) and the moving plate (8) are provided with clamping assemblies; The clamping assembly comprises a fixed rod (9) inserted into the middle of the fixed plate (7) and the moving plate (8); the two fixed rods (9) are provided with a deep groove (10) at one end close to each other, and the deep groove (10) is movably connected with a plug rod (11); one end of the plug rod (11) away from the deep groove (10) is fixedly connected with a clamping sleeve (16); the surface of the clamping sleeve (16) is provided with a groove (32); The upper part of the groove (32) is fixedly connected with a fixed block (17) through a bolt; the middle of the fixed block (17) is provided with a notch (18); the semicircular part of the fixed block (17) is fixedly connected with a hinge rod (28); the hinge rod (28) is rotatably connected with a gear (19); the gear (19) is fixedly connected with a push rod (31); The inside of the groove (32) is movably provided with a rack (20) corresponding to the position of the notch (18); one end of the rack (20) away from the fixed block (17) is fixedly connected with an adjusting block (21) through a connecting rod (23); the inside of the groove (32) is also slidably provided with two clamps (26) on the two inner walls of the groove (32); The inside of the groove (32) is also provided with two inclined grooves (22) penetrating the clamping sleeve (16); the lower surfaces of the two clamps (26) are respectively fixedly connected with a sliding rod (30) corresponding to the position of the inclined groove (22).

2. The device for detecting the shear strength of an epoxy structural adhesive according to claim 1, characterized in that: The two clamps (26) are respectively fixedly connected with a sawtooth (27) on one side close to each other.

3. The device for detecting the shear strength of an epoxy structural adhesive according to claim 1, wherein: The two frame bodies (1) are symmetrically provided with two sliding grooves (2) on one side close to each other; the two ends of the fixed plate (7) and the moving plate (8) are respectively arranged in the sliding grooves (2) provided on the two frame bodies (1), and the fixed plate (7) is fixedly connected with the frame body (1), and the moving plate (8) is slidably connected in the sliding groove (2).

4. The device for detecting the shear strength of an epoxy structural adhesive according to claim 3, characterized in that: One of the sliding grooves (2) is rotatably connected with a lead screw (4), and the lead screw (4) is vertically arranged; the bottom of the sliding groove (2) is provided with a motor (5), and the output end of the motor (5) is fixedly connected with the lead screw (4); the other sliding groove (2) is provided with a guide rod (3), and the two ends of the guide rod (3) are fixedly connected with the two end inner walls of the sliding groove (2); One end of the moving plate (8) is threadedly connected with the lead screw (4), and the other end is slidably connected with the guide rod (3); the lead screw (4) and the guide rod (3) both penetrate the fixed plate (7).

5. The device for detecting the shear strength of an epoxy structural adhesive according to claim 3, characterized in that: The two sliding grooves (2) are provided with telescopic covers (6) at the openings, and the upper and lower ends of the telescopic cover (6) are respectively connected with the upper and lower ends of the sliding groove (2).

6. The device for detecting the shear strength of an epoxy structural adhesive according to claim 1, wherein: The end of the fixed rod (9) is provided with a thread; the fixed rod (9) is threadedly connected with a nut (15) corresponding to the upper surface of the fixed plate (7) or the lower surface of the moving plate (8); the fixed rod (9) is fixedly connected with a limiting block (14) corresponding to the lower surface of the fixed plate (7) or the upper surface of the moving plate (8).

7. The device for detecting the shear strength of an epoxy structural adhesive according to claim 1, wherein: The fixed rod (9) is provided with a pin (13) at a position corresponding to the position below the limiting block (14), and the pin (13) is perpendicular to the fixed rod (9); a plurality of round holes (12) are formed in the plug rod (11), and the pin (13) is inserted into one of the round holes (12).

8. The device for detecting the shear strength of an epoxy structural adhesive according to claim 1, wherein: The width of the rack (20) is consistent with the width of the cutout (18); the collet (26) is provided with a limiting groove (29) at a position corresponding to the adjusting block (21).

9. The device for detecting the shear strength of an epoxy structural adhesive according to claim 1, wherein: The clamping sleeve (16) is provided with a baffle (24) at a position corresponding to the middle part of the two collets (26), and the baffle (24) is fixed on the clamping sleeve (16) by screws (25).

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