CN108680131B - Dispensing test tooling - Google Patents

Abstract

The present application discloses a glue dispensing test tool, comprising: a test fixture, a test block, a cover plate, an adhesive layer and a pusher. The test block has a first through hole and a groove body, the groove body extends along the circumferential direction of the first through hole, the groove body is spaced apart from the first through hole, and the groove body divides the first surface into a first part and a second part, The first part is located radially inside the groove body, the second part is located radially outside the groove body, the part of the second part close to the periphery of the first surface is in contact with the test fixture, and the thickness of the first part is smaller than that of the second part. The cover plate cover shields the first through hole and the groove body, and the edge of the cover plate is opposite to the second part. The adhesive layer is located between the cover plate and the first part, and the pusher penetrates through the first through hole and is suitable for pushing the cover plate. According to the glue dispensing test tool of the embodiment of the present application, by setting the test block, the actual glue dispensing thickness and glue width can be simulated, the structure is simple, the operation is convenient, the test precision is high, and the practical performance is strong.

Description

Dispensing test tooling

technical field

The present application relates to the technical field of glue dispensing testing, in particular, to a glue dispensing test tool.

Background technique

The dispensing process has many advantages such as simple operation, low cost and automatic operation, so it is widely used in the assembly of electronic products and toys. However, in the dispensing process, the dispensing amount of dispensing is not easy to grasp, and it is very easy to have insufficient dispensing strength and excessive dispensing amount.

In the related art, a test method for testing the strength of glue is proposed, but this test method can only test the performance of the glue simply, and cannot accurately test the connection strength between the glue and its connecting pieces, which has great limitations.

SUMMARY OF THE INVENTION

The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a glue dispensing test tool, which has the advantages of convenient operation and accurate test results.

The glue dispensing test tool according to the embodiment of the present application includes: a test fixture; a test block, the test block has a first surface and a second surface opposite to each other, the test block has a first through hole and a groove body, the first A through hole penetrates the first surface and the second surface, the groove body is located on the first surface, the groove body extends along the circumferential direction of the first through hole, and the groove body is connected to the first surface. The first through holes are spaced apart, the groove body divides the test block into a first part and a second part, the first part is located radially inside the groove body, and the second part is located in the groove the radially outer side of the body, the part of the second part close to the peripheral edge of the first surface is in contact with the test fixture, the thickness of the first part is smaller than the thickness of the second part; the cover plate, the cover the plate is located on one side of the test block and is close to the first surface, the cover plate cover shields the first through hole and the groove body, and the edge of the cover plate is opposite to the second part; An adhesive layer, the adhesive layer is located between the cover plate and the first part; a pusher, the pusher penetrates the first through hole and is suitable for pushing the cover plate.

According to the glue dispensing test tool of the embodiment of the present application, by setting the test block, the width of the first part on the test block can simulate the actual dispensing width, and the thickness difference between the first part and the second part on the test block can simulate the actual glue It is convenient to operate and can accurately test the bonding strength of the adhesive layer, so that the appropriate dispensing width and thickness can be selected to improve the structural firmness of the dispensing product.

Additional aspects and advantages of the present application will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

1 is an overall structural diagram of a dispensing test tool according to an embodiment of the present application;

2 is a full cross-sectional view of a dispensing test fixture according to an embodiment of the present application;

Fig. 3 is a partial enlarged view of the part circled by A in Fig. 2;

4 is an exploded view of a dispensing test tool according to an embodiment of the present application;

5 is an exploded view of the glue dispensing test tool according to an embodiment of the present application under another viewing angle;

6 is a schematic diagram of the overall structure of a test block according to an embodiment of the present application;

7 is a side view of a test block according to an embodiment of the present application;

8 is a schematic diagram of the overall structure of a test fixture according to an embodiment of the present application;

FIG. 9 is a structural diagram of a test fixture according to an embodiment of the present application from another viewing angle.

Reference number:

Dispensing test tooling 100,

Test fixture 1, second through hole 11, step 12,

test block 2,

The first surface 21, the first part 21a, the second part 21b, the second surface 22, the first through hole 23, the groove body 24,

Cover plate 3, ink layer 31,

Adhesive Layer 4,

Pusher 5.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "thickness", "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of description This application and the simplified description do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the application. Furthermore, features delimited with "first", "second" may expressly or implicitly include one or more of that feature. In the description of this application, unless stated otherwise, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

The following describes the glue dispensing test tool 100 according to the embodiment of the present application with reference to FIGS. 1 to 9 , and the glue dispensing test tool 100 can test the dispensing strength.

As shown in FIGS. 1-2 and 4-5 , the glue dispensing test tool 100 according to the embodiment of the present application includes: a test fixture 1 , a test block 2 , a cover plate 3 , an adhesive layer 4 and a pusher 5 .

As shown in FIG. 4-FIG. 7, the test block 2 may have opposite first surfaces 21 and second surfaces 22, the test block 2 has a first through hole 23 and a groove body 24, and the first through hole 23 may be in the test block The thickness direction of 2 extends through the first surface 21 and the second surface 22 . The groove body 24 may be located on the first surface 21 , the groove body 24 may extend along the circumferential direction of the first through hole 23 , the groove body 24 may be spaced apart from the first through hole 23 , and the groove body 24 may separate the test block 2 There are the first part 21a and the second part 21b, the first part 21a may be located radially inside the groove body 24, the second part 21b may be located radially outside the groove body 24, A portion may be in contact with the test fixture 1, and the thickness of the first portion 21a may be smaller than that of the second portion 21b.

Optionally, the first through hole 23 may be a circular hole or a polygonal hole, which may be selected and set according to actual usage requirements, which is not specifically limited in this application.

As shown in FIGS. 4-5 , the cover plate 3 can be located on one side of the test block 2 and close to the first surface 21 , the cover plate 3 can cover the first through hole 23 and the groove body 24 , and the edge of the cover plate 3 can be Opposite to the second portion 21b. As shown in FIG. 2, the adhesive layer 4 may be located between the cover plate 3 and the first portion 21a. The pushing member 5 can pass through the first through hole 23 and is suitable for pushing the cover plate 3 .

Specifically, when the glue dispensing test tool 100 is working, glue can be dispensed on the first part 21a, and the width of the first part 21a is the glue dispensing width. When the cover plate 3 covers the first through hole 23 and the groove body 24, as shown in FIG. 7, since the thickness of the first part 21a can be smaller than the thickness of the second part 21b, the thickness between the first part 21a and the second part 21b The difference d can define the glue dispensing height, and the excess glue can enter the tank body 24 under the pressure of the cover plate 3 . After the glue is solidified, an adhesive layer 4 can be formed between the cover plate 3 and the first part 21a, and the adhesive layer 4 can connect the cover plate 3 and the test block 2 together. When testing the bonding strength of the adhesive layer 4 , the assembly of the test block 2 and the cover plate 3 can be placed on the test fixture 1 , and the pusher 5 can pass through the first through hole 23 and can be applied to the cover plate 3 As for the thrust, the bond strength of the test adhesive layer 4 can be verified according to the thrust of the pusher 5 to push the test block 2 and the cover plate 3 away.

Optionally, the test block 2 can be set to different models, the width of the first part 21a on the test block 2 of different models can be different, and the width between the first part 21a and the second part 21b on the test block 2 of different models can be different. The thickness difference d can also be different, so that the corresponding test block 2 can be selected according to the actual dispensing width and dispensing thickness, so that the bonding strength of different types of adhesive layers 4 can be easily tested.

In a specific example of the present application, the dispensing test tool 100 may further include a loading device, the loading device may be connected to the pusher 5, and the loading device may apply a load to the pusher 5, whereby the pusher 5 may be a cover plate 3 Apply thrust. Among them, the loading device can control the size of the load exerted on the pusher 5, and can also control the speed at which the pusher 5 exerts the thrust, so that a certain amount of load can be uniformly applied to the cover plate 3 through the pusher 5, so that it can be Improving the operation of the dispensing test tool 100 is more stable, and the test effect of the dispensing test tool 100 can also be improved.

It can be understood that the dispensing test tool 100 can simulate the dispensing and bonding environment during assembly of the dispensing product. For example, the dispensing product can be a mobile phone, the composition material of the test block 2 can be the same as that of the middle frame of the mobile phone, and the composition material of the cover plate 3 can be the same as the composition material of the glass cover plate of the mobile phone. The bonding strength of the cover plate 3 simulates the connection strength between the middle frame of the mobile phone and the glass cover plate. The width of the first portion 21a may be the same as the dispensing width of the middle frame of the mobile phone, and the thickness difference d between the first portion 21a and the second portion 21b may be the same as the dispensing thickness of the middle frame of the mobile phone. Thus, the glue dispensing test tool 100 can accurately test the bonding strength between the middle frame of the mobile phone and the glass cover. Further, according to the bond strength requirements between the middle frame of the mobile phone and the glass cover, it is possible to verify whether the dispensing width and dispensing thickness meet the needs of use through the dispensing test tool 100, so that the appropriate dispensing width and point can be obtained. glue thickness.

It should be noted that the dispensing products are not limited to mobile phones, but can also be other electronic products and toy products. The dispensing test tool 100 can be used to test the bonding strength of the dispensing according to the actual use requirements. Appropriate glue dispensing parameters are selected for the test of the glue test tool 100, which is not specifically limited in this application.

According to the glue dispensing test tool 100 according to the embodiment of the present application, by setting the test block 2, the width of the first part 21a on the test block 2 can simulate the actual glue dispensing width. The thickness difference d can simulate the actual dispensing thickness, which is convenient to operate and can accurately test the bonding strength of the adhesive layer 4, so that the appropriate dispensing width and dispensing thickness can be selected to improve the structural firmness of the dispensing product. .

As shown in FIGS. 8 to 9 , according to some embodiments of the present application, the test fixture 1 may have a second through hole 11 , and the inner wall of the second through hole 11 may have a step 12 , and the test block 2 is overlapped with the step 12 . This can make the structure of the test fixture 1 simpler and facilitate the pushing member 5 to exert a pushing force on the cover plate 3 . Specifically, when the glue dispensing test tool 100 is working, the test fixture 1 can be fixed, and the test block 2 can be placed on the step 12 . When the pusher 5 pushes the cover plate 3 , the step 12 can prevent the test block 2 from moving relative to the test fixture 1 , thereby improving the test accuracy of the glue dispensing test tool 100 .

Optionally, a plurality of steps 12 may be provided on the test fixture 1 , and the plurality of steps 12 may be evenly spaced in the circumferential direction of the second through hole 11 , thereby improving the fitting firmness of the test block 2 and the test fixture 1 . For example, in the specific example shown in FIG. 8 , the test jig 1 is formed in a square shape, and the second through hole 11 is formed in a square shape and penetrates the test jig 1 in the thickness direction of the test jig 1 . The test fixture 1 is provided with four steps 12 , and the four steps 12 are evenly spaced around the second through hole 11 . Of course, the design form of the test fixture 1 is not limited to this, for example, the test fixture 1 can also be formed into a cylindrical shape, which can be selected and set according to actual use requirements, which is not specifically limited in this application.

As shown in FIG. 1 , in some embodiments of the present application, the second surface 22 may be flush with a part of the outer surface of the test fixture 1 , thereby making the overall structure of the glue dispensing test fixture 100 more coordinated. Of course, it can be understood that the second surface 22 may not be flush with part of the outer surface of the test fixture 1 . For example, the second surface 22 can also be located inside the second through hole 11 , and the second surface 22 can also extend outward from the second through hole 11 , as long as it can meet the structural firmness requirements of the dispensing test tool 100 .

As shown in FIG. 6 , in some embodiments of the present application, the test block 2 may be formed in a cylindrical shape, thereby making the structure of the test block 2 simpler. In some specific examples of the present application, the test block 2 is formed in a cylindrical shape, and the first through hole 23 is formed as a circular hole, so that the overall structure of the test block 2 can be more coordinated and more aesthetically pleasing. It should be noted that the shape of the test block 2 is not limited to this. For example, the test block 2 may also be formed in a polyhedron shape.

As shown in FIG. 6 , in some embodiments of the present application, the groove body 24 may be formed as an annular groove, thereby making the structure of the groove body 24 simpler and convenient for processing. Optionally, the groove body 24 may be formed as an annular groove, thereby improving the appearance of the test block 2 . Optionally, an annular groove body 24 can be machined on the test block 2 by means of CNC machining, which is convenient to operate and has high machining accuracy. Of course, it can be understood that the shape of the groove body 24 is not limited to this, for example, the groove body 24 can also be formed as a polygon.

The test block 2 of the specific embodiment of the present application will be described in detail below with reference to FIGS. 6-7 .

As shown in FIGS. 6-7 , the test block 2 may be formed in a disc shape, and the first surface 21 and the second surface 22 are disposed opposite to each other in the thickness direction of the test block 2 . The first through hole 23 is located at the center of the test block 2 and penetrates through the first surface 21 and the second surface 22 in the thickness direction of the test block 2 . The groove body 24 is disposed on the first surface 21 , and the groove body 24 is concave relative to the first surface 21 in the thickness direction of the test block 2 . The groove body 24 divides the first surface 21 into a first part 21a and a second part 21b, and the thickness of the second part 21b is larger than that of the first part 21a.

According to some embodiments of the present application, the bottom surface of the groove body 24 may be a flat surface, thereby facilitating the processing of the groove body 24 . Of course, the bottom surface of the groove body 24 can also be a circular arc surface or a stepped surface, as long as it can meet the requirements for storing glue.

In some embodiments of the present application, the test block 2 may be a plastic part, so that the processing cost of the glue dispensing test tool 100 can be saved. Plastic materials are cheap and easy to process, and have strong practical properties. Optionally, the test block 2 can also be a metal material, and the setting can be selected according to the requirements of the glue dispensing test tool 100 .

As shown in FIG. 4 , according to some embodiments of the present application, the surface of the cover plate 3 facing the test block 2 may be coated with an ink layer 31 , thereby improving the connection strength of the adhesive layer 4 . Specifically, when the cover plate 3 is placed on the test block 2, the glue on the first part 21a can chemically react with the ink layer 31, and the resultant can firmly connect the cover plate 3 and the test block 2 together.

Optionally, the thickness of the ink layer 31 may be 15-30 um, so that the connection requirements of the cover plate 3 and the test block 2 can be met. It can be understood that when the thickness of the ink layer 31 is small, the connection strength between the cover plate 3 and the test block 2 will be greatly affected, thereby reducing the bonding strength of the adhesive layer 4 . When the thickness of the ink layer 31 is relatively large, although the requirement of adhesive strength can be met, the test cost will be increased. It has been verified by the inventor for many times that when the thickness of the ink layer 31 is 15-30um, the thickness of the ink layer 31 can not only meet the requirement of bonding strength, but also save the amount of ink used. Further, the thickness of the ink layer 31 may be 20um.

In some embodiments of the present application, the adhesive layer 4 may be hot melt adhesive or optical adhesive, so that the bonding strength of the adhesive layer 4 can be improved. Among them, the hot melt adhesive has the advantages of non-toxic, tasteless, pollution-free, high bonding strength and fast bonding speed, and can greatly improve the bonding strength of the adhesive layer 4 . Optical glue can not only meet the bonding requirements, but also has the function of light transmission. When the dispensing product has high requirements for light transmission, optical glue can be used for bonding.

In a specific example of the present application, different types of ink layers 31 can be provided on the cover plate 3 , and the dispensing test tool 100 can test the bonding strength between different types of ink layers 31 and glue, and thus can select Corresponds to the type of the ink layer 31 with the greatest bond strength. Of course, different types of glues can also be set on the first part 21a, and the glue dispensing test tool 100 can test the bonding strength between different types of glues and the ink layer 31, so that the glue with the highest bonding strength can be selected. type. Therefore, through the above setting, a better combination of the glue and the ink layer 31 can be obtained by the single-factor variable test method, so that the bonding strength of the adhesive layer 4 can be improved, and the structural strength of the dispensing product can be improved.

As shown in FIGS. 1 and 4 to 5 , according to some embodiments of the present application, the pusher 5 may be in the shape of a column, thereby making the overall structure of the pusher 5 simpler. Optionally, the pushing member 5 can be adapted to the first through hole 23 . For example, the pushing member 5 may be formed in a cylindrical shape, and the first through hole 23 may be formed as a circular hole; the pushing member 5 may be formed in a rectangular parallelepiped shape, and the first through hole 23 may be formed as a square hole. Therefore, through the above arrangement, the matching structure of the pusher 5 and the first through hole 23 can be more coordinated. It can be understood that, the matching form of the pushing member 5 and the first through hole 23 is not limited to this. For example, the pushing member 5 can also be formed in a cylindrical shape, and the first through hole 23 can be formed in a square hole, which can also meet the testing requirements of the glue dispensing test tool 100 .

The glue dispensing test tool 100 and its testing method according to specific embodiments of the embodiments of the present application will be described in detail below with reference to FIGS. 1-9 . It should be understood that the following descriptions are only exemplary, rather than specific limitations of the present application.

As shown in FIGS. 1-2 and 4-5 , the glue dispensing test tool 100 according to the embodiment of the present application includes: a test fixture 1 , a plurality of test blocks 2 , a cover plate 3 , an adhesive layer 4 and a pusher 5.

As shown in FIGS. 7-8 , the test fixture 1 is formed into a cube shape, and a square second through hole 11 is provided at the center of the test fixture 1 , and the second through hole 11 penetrates the test fixture 1 in the thickness direction of the test fixture 1 , the test fixture 1 is provided with four steps 12 , and the four steps 12 are evenly spaced around the second through hole 11 .

As shown in FIG. 6 , each test block 2 is formed in a disc shape, and the first surface 21 and the second surface 22 are disposed opposite to each other in the thickness direction of the test block 2 . The first through hole 23 is located at the center of the test block 2 and penetrates through the first surface 21 and the second surface 22 in the thickness direction of the test block 2 . The groove body 24 is disposed on the first surface 21 , and the groove body 24 is concave relative to the first surface 21 in the thickness direction of the test block 2 . The groove body 24 divides the first surface 21 into a first part 21a and a second part 21b, and the thickness of the first part 21a is smaller than that of the second part 21b. When the dispensing test tool 100 is working, the width of the first part 21a is the dispensing width, and the thickness difference d between the first part 21a and the second part 21b is the dispensing thickness. A portion of the second portion 21 b close to the periphery of the first surface 21 is in contact with the test fixture 1 , and the test fixture 1 can play a role of fixing the test block 2 . The thickness difference d of the first portion 21a and the second portion 21b of the plurality of test blocks 2 is different, and the width of the first portion 21a of the plurality of test blocks 2 is also different.

As shown in FIG. 4 , the cover plate 3 is formed into a cube shape, and an ink layer 31 is provided on the surface of the cover plate 3 on one side close to the test block 2 , and the thickness of the ink layer 31 is 20 μm.

The test method according to the embodiment of the present application includes the following steps:

First, different types of ink layers 31 are arranged on the cover plate 3, hot melt adhesive is selected for the dispensing glue, and the dispensing test tool 100 can test the bonding strength between different types of ink layers 31 and the glue, thereby selecting Corresponds to the type of the ink layer 31 with the greatest bond strength.

Then, using the combination of the above-mentioned ink layer 31 and glue, select one of the test blocks 2 and dispense glue on its first part 21a, place the cover plate 3 on the test block 2, and place the glue on the cover plate 3 and the first part 21a. An adhesive layer 4 is formed therebetween, the thickness of the adhesive layer 4 is the same as the thickness difference d between the first part 21a and the second part 21b, and the width of the adhesive layer 4 is the same as that of the first part 21a. After the adhesive layer 4 is solidified, the assembly of the cover plate 3 and the test block 2 is placed on the test fixture 1 , and the pusher 5 is inserted through the first through hole 23 and abuts on one side surface of the cover plate 3 . , the loading device can slowly apply a load to the pusher 5, and when the cover plate 3 is separated from the test block 2, record the loading force displayed on the loading device.

Finally, judge the bonding strength of the adhesive layer 4 according to the loading force when the cover plate 3 is separated from the test block 2, select different types of test blocks 2 to adjust the width and thickness of the adhesive layer 4, repeat the above operation, you can choose Determine the appropriate width and thickness of the adhesive layer 4.

Therefore, through the above setting, a suitable combination of the width and thickness of the glue, the ink layer 31 and the adhesive layer 4 can be obtained by the single-factor variable test method, which can improve the bonding strength of the adhesive layer 4, thereby improving the Structural strength of the dispensed product.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims (12)

1. a glue dispensing test tooling, is characterized in that, comprises: Test Fixture; a test block, the test block has an opposite first surface and a second surface, the test block has a first through hole and a groove body, the first through hole penetrates the first surface and the second surface, The groove body is located on the first surface, the groove body extends along the circumferential direction of the first through hole, the groove body is spaced apart from the first through hole, and the groove body connects the The test block is divided into a first part and a second part, the first part is located on the radial inner side of the groove body, the second part is located on the radial outer side of the groove body, and the second part is close to the first part. A portion of the periphery of a surface is in contact with the test fixture, the thickness of the first portion being less than the thickness of the second portion; a cover plate, the cover plate is located on one side of the test block and close to the first surface, the cover plate shields the first through hole and the groove body, and the edge of the cover plate is connected to the The second part is relative; an adhesive layer, the adhesive layer is located between the cover plate and the first part, the thickness difference between the first part and the second part is the thickness of the adhesive layer, the first part The width is the width of the adhesive layer; A pusher, which is penetrated through the first through hole and is suitable for pushing the cover plate, and tests the glue according to the thrust force of the pusher to push the test block and the cover plate away The bond strength of the adhesive layer. 2 . The glue dispensing test tool according to claim 1 , wherein the test fixture has a second through hole, an inner wall of the second through hole has a step, and the test block overlaps the step. 3 . 3. The glue dispensing test fixture of claim 1, wherein the second surface is flush with a portion of the outer surface of the test fixture. 4. The glue dispensing test tool according to claim 1, wherein the test block is cylindrical. 5 . The glue dispensing test tool according to claim 1 , wherein the groove body is an annular groove. 6 . 6 . The glue dispensing test tool according to claim 5 , wherein the groove body is an annular groove. 7 . 7 . The glue dispensing test tool according to claim 1 , wherein the bottom surface of the groove body is a plane. 8 . 8. The glue dispensing test tool according to claim 1, wherein the test block is a plastic part. 9 . The glue dispensing test tool according to claim 1 , wherein a surface of the cover plate facing the test block is coated with an ink layer. 10 . 10. The glue dispensing test tool according to claim 9, wherein the thickness of the ink layer is 15-30um. 11 . The glue dispensing test tool according to claim 1 , wherein the adhesive layer is hot melt adhesive or optical adhesive. 12 . 12 . The glue dispensing test tool according to claim 1 , wherein the pusher is cylindrical. 13 .

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