Curing mold for testing bonding strength of adhesive to metal

Abstract

The utility model relates to the technical field of metal adhesive testing, in particular to a curing mold for testing the bonding strength of an adhesive to metal, which comprises a lower mold plate and an upper mold plate, the upper mold plate is fixedly arranged above the lower mold plate, one end of the upper part of the lower mold plate is provided with a short base for placing a lower metal sheet, and the lower mold plate is fixedly arranged on the lower mold plate. The other end of the upper portion of the lower die plate is provided with a high base used for placing an upper metal sheet, a height difference equal to the thickness of the lower metal sheet is formed between the short base and the high base, and a middle base as high as the short base is arranged on the lower die plate between the short base and the high base. The middle base is used for bearing the lap joint section of the lower metal sheet and the upper metal sheet, and the high base, the short base and the middle base are equal to the lower die plate in width. According to the utility model, stable placement of the metal sheet in the test process is ensured, excessive overflow of the adhesive due to overlarge clamping force is avoided, and the stability and uniformity of the adhesive in the curing process are both considered.

Description

Technical Field

[0001] The utility model relates to the technical field of metal adhesive testing, in particular to a curing mold for testing the bonding strength of adhesive to metal. Background Art

[0002] With the continuous advancement of modern industrial technology, the application of adhesives in the field of metal bonding has become increasingly widespread. Especially in the electronics industry, adhesives play a vital role in ensuring a stable connection between electronic components and metal parts. Adhesive strength is one of the key indicators to measure the performance of adhesives, which directly reflects the firmness of the bond between the adhesive and the adherend. If the adhesive strength is insufficient, the adhered material may fall off during use, which will not only affect the normal operation of the equipment, but also may cause a series of safety hazards. Therefore, it is very necessary to test the adhesive's bonding strength to metal.

[0003] The traditional bonding strength test process usually selects two metal sheets of the same size but different materials, applies glue, overlaps, and cures them, and then uses a universal testing tensile machine to conduct testing and data analysis to obtain experimental results. During the overlap and curing stage, a clamp (such as an iron clamp) is generally used to clamp and fix the above-mentioned metal sheets, and then placed in an oven for curing. However, in this process, the clamping force of the clamp is difficult to control. If it is too small, the metal sheet will easily deviate and cannot be stably fixed; if it is too large, the adhesive will overflow under pressure and cover the overlapping edge of the metal sheet, which will be difficult to clean, causing experimental errors and affecting the test results. In addition, the overflow of the adhesive under pressure will also cause the surface of the clamp to be adhered to by the overflowed adhesive after the curing process is completed, making the subsequent disassembly laborious and time-consuming, affecting the test efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a curing mold for testing the bonding strength of adhesive to metal, which has good fixing effect, is easy to control the pressing force and is not affected by adhesive, in view of the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A curing mold for testing the bonding strength of adhesive to metal, characterized by:

[0007] It includes a lower template and an upper template, wherein the upper template is fixedly arranged above the lower template.

[0008] A short base for placing the metal sheet below is provided at one end of the upper part of the lower template, and a high base for placing the metal sheet above is provided at the other end of the upper part of the lower template, and a height difference equal to the thickness of the metal sheet below is formed between the short base and the high base.

[0009] An intermediate seat having the same height as the short base is provided on the lower template between the short base and the high base, and the intermediate seat is used to support the overlapping section of the lower metal sheet and the upper metal sheet, and the high base, the short base and the intermediate seat are all the same width as the lower template;

[0010] The upper part of the upper template is provided with threaded holes corresponding to the short base, the middle base and the high base respectively, and each threaded hole is provided with a clamping bolt that can press downward on the upper metal sheet or the lower metal sheet, and a circular pressure plate is coaxially provided at the lower part of each clamping bolt, and the bottom diameter of each circular pressure plate is greater than or equal to the length of the middle seat.

[0011] The technical problem to be solved by the utility model can be further achieved through the following steps: a cleaning groove for the glue suction tool to extend into is provided between the middle seat and the short base and between the middle seat and the high base.

[0012] The technical problem to be solved by the utility model can be further achieved by the following steps: the distance between the ends of the high base and the middle base that are relatively far away is equal to the length of the upper metal sheet, and the distance between the ends of the low base and the middle base that are relatively far away is equal to the length of the lower metal sheet.

[0013] The technical problem to be solved by the utility model can be further achieved by the following steps: the distance between the ends of the high base and the middle base that are relatively far away is greater than the length of the upper metal sheet, and the distance between the ends of the low base and the middle base that are relatively far away is greater than the length of the lower metal sheet;

[0014] A first limit baffle is provided at one end of the high base away from the middle seat for stopping the upper end of the metal sheet, and a second limit baffle is provided at one end of the low base away from the middle seat for stopping the lower end of the metal sheet. The first limit baffle and the second limit baffle have the same structure and can both be slidably adjusted along the length direction of the lower template.

[0015] The technical problem to be solved by the utility model can be further achieved through the following steps: the first limit baffle includes a stop plate arranged above the high base along the width direction of the lower template, and both ends of the stop plate extend outward from the lower template, and each protruding end has a connecting column extending downward, and each connecting column is provided with a limit hole, and each limit hole is provided with a limit bolt that can abut inwardly against the side of the high base, and each limit column has a slider extending inward at the lower end, and a sliding groove matching the slider is provided on the side of the high base.

[0016] The technical problem to be solved by the utility model can be further achieved through the following steps: the lower template has the same width as the upper metal sheet and the lower metal sheet.

[0017] The technical problem to be solved by the utility model can be further achieved through the following steps: the width of the lower template is greater than the width of the upper metal sheet and the lower metal sheet, a first elastic clamping plate for clamping and limiting the upper metal sheet from both sides is provided on the high base, and a second elastic clamping plate for clamping and limiting the lower metal sheet from both sides is provided on the low base, the first elastic clamping plate and the second elastic clamping plate have the same structure and can both slide inward and outward along the width direction of the lower template.

[0018] The technical problem to be solved by the utility model can be further achieved through the following steps: the first elastic clamping plate comprises a pair of clamping plates symmetrically arranged on the upper part of the high base along the length direction of the lower template, a flexible pad is provided on the inner side of each clamping plate, a corresponding fixing seat is provided on the high base on the outer side of each clamping plate, a connecting screw is provided between the clamping plate and the fixing seat, one end of the connecting screw is fixed on the clamping plate, and the other end passes through a corresponding through hole on the fixing seat and extends outward, a spring for pushing the clamping plate inward is sleeved on the connecting screw between the fixing seat and the clamping plate, and a fixing nut is provided on the protruding end of the connecting screw, which cooperates with the fixing seat to stop the clamping plate from moving inward.

[0019] The technical problem to be solved by the utility model can be further achieved by the following steps: the clamping plate on one side of the first elastic clamping plate is fixedly connected as a whole with the clamping plate on the same side of the second elastic clamping plate, and glue-absorbing cotton is provided at the connection corresponding to the overlapping section of the upper metal sheet and the lower metal sheet.

[0020] The technical problem to be solved by the utility model can be further achieved through the following steps: both ends of the lower template are provided with supporting vertical plates, and the two ends of the supporting vertical plates are respectively fixedly connected to the lower template and the upper template as a whole.

[0021] Compared with the prior art, the utility model ensures the stable placement of the metal sheet during the test process by arranging a low base, a high base and an intermediate base on the lower template; the combination of the clamping bolt and the circular pressure plate enables the metal sheet to be evenly and moderately clamped, which not only ensures that the adhesive will not overflow excessively due to excessive clamping force, but also takes into account the stability and uniformity of the adhesive during the curing process; the setting of the cleaning groove makes it more convenient and timely to clean up the adhesive overflowed during the test process, avoiding its influence on the test results; the setting of the limit baffle and the elastic clamp effectively prevents the metal sheet from deviating during the clamping process, thereby ensuring the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural cross-sectional view of Embodiment 1 of the present utility model;

[0023] Figure 2 It is a top view schematic diagram of embodiment 1 of the utility model;

[0024] Figure 3 It is a front view schematic diagram of Embodiment 2 of the present utility model;

[0025] Figure 4 It is a top view schematic diagram of embodiment 2 of the utility model;

[0026] Figure 5 This is a front view of Embodiment 3 of the present utility model;

[0027] Figure 6 for Figure 5 B-direction sectional view;

[0028] Figure 7 It is a front view schematic diagram of Embodiment 4 of the present utility model;

[0029] Figure 8 It is a schematic diagram of the structure of the limit baffle in Examples 2, 3, and 4;

[0030] Fig. 9 This is a schematic diagram of the structure of the single-side clamping plate in Example 4;

[0031] In the figure: 1-lower template; 2-upper template; 3-supporting vertical plate; 4-lower metal sheet; 5-upper metal sheet;

[0032] 11- low base; 12- high base; 13- middle base; 14- cleaning slot; 15- first limit baffle; 16- second limit baffle; 17- first elastic clamp; 18- second elastic clamp; 19- slide slot; 20- fixed base;

[0033] 21-threaded hole; 22-clamping bolt; 23-circular pressure plate;

[0034] 151-stop plate; 152-connecting column; 153-limiting bolt; 154-sliding block;

[0035] 171-clamping plate; 172-connecting screw; 173-spring; 174-fixing nut; 175-flexible pad; 176-glue-absorbing cotton. DETAILED DESCRIPTION

[0036] The specific technical solutions of the present invention are further described below so that those skilled in the art can further understand the present invention, but it does not constitute a limitation of the rights of alignment.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0038] [Example 1]

[0039] Please refer to Figure 1-2 A curing mold for testing the bonding strength of adhesive to metal can assist in overlapping and fixing a pair of rectangular metal sheets of the same size and different materials (including a lower metal sheet 4 and an upper metal sheet 5, the thickness of the metal sheet is 0.1 cm), specifically including a lower template 1 and an upper template 2, both ends of the lower template 1 are provided with supporting vertical plates 3, the two ends of the supporting vertical plates 3 are respectively fixedly connected to the lower template 1 and the upper template 2 as a whole, and the upper template 2 is fixedly arranged above the lower template 1.

[0040] A short base 11 for placing the lower metal sheet 4 is provided at one end of the upper portion of the lower template 1, and a high base 12 for placing the upper metal sheet 5 is provided at the other end of the upper portion of the lower template 1. A height difference equal to the thickness of the lower metal sheet 4 is formed between the short base 11 and the high base 12 to ensure that the upper metal sheet 5 and the lower metal sheet 4 can remain level when overlapped and fixed.

[0041] An intermediate seat 13 having the same height as the short base 11 is provided on the lower template 1 between the short base 11 and the high base 12. The intermediate seat 13 is used to support the overlapping section of the lower metal sheet 4 and the upper metal sheet 5. The high base 12, the short base 11 and the intermediate seat 13 are all the same width as the lower template 1.

[0042] The upper part of the upper mold plate 2 is provided with threaded holes 21 corresponding to the short base 11, the middle base 13 and the high base 12, and each threaded hole 21 is provided with a corresponding clamping bolt 22 that can be pressed downward on the upper metal sheet 5 or the lower metal sheet 4. A circular pressing plate 23 is coaxially provided at the lower part of each clamping bolt 22, and the bottom diameter of each circular pressing plate 23 is greater than or equal to the length of the middle base 13, so as to ensure that the overlapped part is evenly stressed during the clamping process.

[0043] Cleaning grooves 14 for adhesive suction tools (such as cotton swabs) to extend into are provided between the middle seat 13 and the short base 11 and between the middle seat 13 and the high base 12, so as to clean up the overflowed adhesive in time when the metal sheet is fixed.

[0044] The distance between the ends of the high base 12 and the middle base 13 that are relatively far away is equal to the length of the upper metal sheet 5, and the distance between the ends of the low base 11 and the middle base 13 that are relatively far away is equal to the length of the lower metal sheet 4. In this way, when placing the metal sheet, it is only necessary to align the two ends with the edge of the mold to achieve that the overlap section of the metal sheet is flush with the edge of the middle seat 13, which can effectively improve the test efficiency and ensure the test accuracy. Furthermore, the lower template 1 can also be the same width as the upper metal sheet 5 and the lower metal sheet 4 to ensure that the two sides of the metal sheet can be accurately aligned with the edge of the mold when placed, further improving the effect.

[0045] In this embodiment, the length of the lower template 1 is 9.2 cm, the width is 1.3 cm, and the height of the supporting vertical plate 3 is 5 cm; the length of the high base 12 and the short base 11 are equal, which is 3.5 cm, the height of the high base 12 is 1 cm, the height of the short base 11 is 0.9 cm, and the length of the middle seat 13 is 0.8 cm; the width of the cleaning groove 14 is 0.7 cm; the length of the clamping bolt 22 is 4.5 cm, of which the diameter of the clamping bolt 22 corresponding to the high base 12 and the short base 11 is 1 cm, and the diameter of the clamping bolt 22 corresponding to the middle seat 13 is 0.8 cm.

[0046] The utility model discloses a curing mold for testing the bonding strength of adhesive to metal. When in use, firstly rotate the clamping bolt 22 to a position away from the lower template 1, prepare two metal sheets to be tested (length 5cm, width 1.3cm, thickness 0.1cm, direction Figure 1Take the figure as an example), then place one of the pieces as the lower metal sheet 4 on the short base 11, align the right end of the lower metal sheet 4 with the right end of the short base 11, align the side of the lower metal sheet 4 with the side of the short base 11, and then tighten the clamping bolts 22 at the corresponding position above to fix the lower metal sheet 4. At this time, the other end of the lower metal sheet 4 is just aligned with the left end of the middle seat 13, and then glue is applied to the area of ​​the lower metal sheet 4 above the middle seat 13 (that is, the glue application area is 1.3*0.8cm²). After the glue application is completed, place the other metal sheet as the upper metal sheet 5 on the high base 12, align the left end of the upper metal sheet 5 with the left end of the high and low seats, and align the side of the upper metal sheet 5 with the The side of the high base 12, and then tighten the clamping bolt 22 at the corresponding position on the top to fix the upper metal sheet 5. At this time, the other end of the upper metal sheet 5 is just aligned with the right end of the middle seat 13 to complete the overlap of the two metal sheets. Then properly tighten the clamping bolt 22 at the corresponding position above the middle seat 13 to make the upper metal sheet 5 and the lower metal sheet 4 fit completely. The operator can increase or decrease the tightening degree of the clamping bolt 22 according to the degree of glue overflow. The overflowed colloid during the operation will be exposed to the side of the metal sheet and the cleaning groove 14, and can be absorbed or scraped off with tools. Finally, put the entire curing mold into the set oven. After it is completely cured, use a universal tensile testing machine to test the adhesion.

[0047] [Example 2]

[0048] Please refer to Figure 3-4 and Figure 8 , which is different from the first embodiment, is that the present embodiment provides another end positioning method of the metal sheet. Specifically, the distance between the ends of the high base 12 and the middle base 13 that are relatively far away is greater than the length of the upper metal sheet 5, and the distance between the ends of the low base 11 and the middle base 13 that are relatively far away is greater than the length of the lower metal sheet 4;

[0049] A first limit baffle 15 for stopping the end of the upper metal sheet 5 is provided at one end of the high base 12 away from the middle seat 13, and a second limit baffle 16 for stopping the end of the lower metal sheet 4 is provided at one end of the low base 11 away from the middle seat 13. The first limit baffle 15 and the second limit baffle 16 have the same structure and can be slidably adjusted along the length direction of the lower template 1 to adapt to metal sheets of different lengths. When in use, the relative positions of the first limit baffle 15 and the second limit baffle 16 can be adjusted according to the length of the metal sheet to align the overlapping section of the metal sheet with the left and right ends of the middle seat 13.

[0050] In order to realize the sliding adjustment function of the first limit baffle 15 and the second limit baffle 16, the first limit baffle 15 includes a stopper plate 151 arranged above the high base 12 along the width direction of the lower template 1, and the two ends of the stopper plate 151 extend outward from the lower template 1, and each extended end has a connecting column 152 extending downward, each connecting column 152 is provided with a limit hole, and each limit hole is provided with a limit bolt 153 that can abut against the side of the high base 12 inwardly, and the lower end of each limit column is extended inwardly with a slider 154, and the side of the high base 12 is correspondingly provided with a slide groove 19 that matches the slider 154. When in use, by loosening the limit bolt 153, the stopper plate 151 can be disengaged from the high base 12 to achieve sliding adjustment; after the adjustment is completed, the limit bolt 153 is tightened to fix the stopper plate 151 again.

[0051] [Example 3]

[0052] Please refer to Figure 5-6 , which is different from Embodiments 1 and 2 in that this embodiment provides another lateral positioning method for the metal sheet. In this embodiment, the width of the lower template 1 is greater than the width of the upper metal sheet 5 and the lower metal sheet 4 to provide additional space for the clamping device.

[0053] Specifically, a first elastic clamp 17 is provided on the high base 12 for clamping and limiting the upper metal sheet 5 from both sides, and a second elastic clamp 18 is provided on the low base 11 for clamping and limiting the lower metal sheet 4 from both sides. The first elastic clamp 17 and the second elastic clamp 18 have the same structure and can slide inward and outward along the width direction of the lower template 1.

[0054] As a structure capable of realizing the above-mentioned functions, the first elastic clamping plate 17 includes a pair of clamping plates 171 symmetrically arranged on the upper part of the high base 12 along the length direction of the lower template 1, and a flexible pad 175 is provided on the inner side of each clamping plate 171. A fixing seat 20 is correspondingly fixed on the high base 12 outside each clamping plate 171, and the fixing seat 20 is also symmetrically arranged along the length direction of the lower template 1. A connecting screw 172 is provided between the clamping plate 171 and the fixing seat 20, and one end of the connecting screw 172 is fixed on the clamping plate 171, and the other end passes through the corresponding through hole on the fixing seat 20 and extends outward. A spring 173 for pushing the clamping plate 171 inward is sleeved on the connecting screw 172 between the fixing seat 20 and the clamping plate 171, and a fixing nut 174 is provided on the protruding end of the connecting screw 172, which cooperates with the fixing seat 20 to stop the clamping plate 171 from moving inward. Taking the upper metal sheet 5 as an example, when in use, first place the upper metal sheet 5 between the two clamping plates 171, then loosen the fixing nut 174, release the spring 173, and make the clamping plate 171 start to move inward, stably clamping and positioning the metal sheet to ensure that it will not deviate or loosen during subsequent tightening and fixing.

[0055] In this embodiment, the first elastic clamping plate 17 and the second elastic clamping plate 18 do not interfere with each other.

[0056] [Example 4]

[0057] Please refer to Figure 7-9 In order to further improve the cleanliness when the metal sheet is fixed, the clamping plate 171 on one side of the first elastic clamping plate 17 and the clamping plate 171 on the same side of the second elastic clamping plate 18 are fixedly connected as a whole, and a glue absorbing cotton 176 is provided at the connection corresponding to the overlapping section of the upper metal sheet 5 and the lower metal sheet 4 (i.e., the middle seat 13). In this way, the adhesive overflowing from the overlapping part to the side when the metal sheet is fixed will be directly absorbed by the glue absorbing cotton 176, and the operator only needs to clean the upper and lower surfaces of the metal sheet through the cleaning groove 14.

[0058] In summary, the utility model ensures the stable placement of the metal sheet during the test process by setting the short base 11, the high base 12 and the middle base 13 on the lower template 1; the combination of the clamping bolt 22 and the circular pressure plate 23 enables the metal sheet to be evenly and moderately clamped, which not only ensures that the adhesive will not overflow excessively due to excessive clamping force, but also takes into account the stability and uniformity of the adhesive during the curing process; the setting of the cleaning groove 14 makes it more convenient and timely to clean up the overflowed adhesive during the test, avoiding its influence on the test results; the setting of the limit baffle and the elastic clamp effectively prevents the metal sheet from deviating during the clamping process, thereby ensuring the reliability of the test results.

[0059] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A curing mold for testing the bonding strength of an adhesive to metal, characterized in that: It includes a lower template and an upper template, wherein the upper template is fixedly arranged above the lower template. A short base for placing the metal sheet below is provided at one end of the upper part of the lower template, and a high base for placing the metal sheet above is provided at the other end of the upper part of the lower template, and a height difference equal to the thickness of the metal sheet below is formed between the short base and the high base. An intermediate seat having the same height as the short base is provided on the lower template between the short base and the high base, and the intermediate seat is used to support the overlapping section of the lower metal sheet and the upper metal sheet, and the high base, the short base and the intermediate seat are all the same width as the lower template; The upper part of the upper template is provided with threaded holes corresponding to the short base, the middle base and the high base respectively, and each threaded hole is provided with a clamping bolt that can press downward on the upper metal sheet or the lower metal sheet, and a circular pressure plate is coaxially provided at the lower part of each clamping bolt, and the bottom diameter of each circular pressure plate is greater than or equal to the length of the middle seat.

2. The curing mold for testing the bonding strength of an adhesive to metal according to claim 1, characterized in that: A cleaning through groove for the glue suction tool to extend into is arranged between the middle seat and the short base, and between the middle seat and the high base.

3. The curing mold for testing the bonding strength of an adhesive to metal according to claim 2, characterized in that: The distance between the ends of the high base and the middle base that are relatively far away is equal to the length of the upper metal sheet, and the distance between the ends of the low base and the middle base that are relatively far away is equal to the length of the lower metal sheet.

4. The curing mold for testing the bonding strength of an adhesive to metal according to claim 2, characterized in that: The distance between the ends of the high base and the middle base that are relatively far away from each other is greater than the length of the upper metal sheet, and the distance between the ends of the low base and the middle base that are relatively far away from each other is greater than the length of the lower metal sheet; A first limit baffle is provided at one end of the high base away from the middle seat for stopping the upper end of the metal sheet, and a second limit baffle is provided at one end of the low base away from the middle seat for stopping the lower end of the metal sheet. The first limit baffle and the second limit baffle have the same structure and can both be slidably adjusted along the length direction of the lower template.

5. The curing mold for testing the bonding strength of adhesive to metal according to claim 4, characterized in that: The first limit baffle includes a stop plate arranged above the high base along the width direction of the lower template, and both ends of the stop plate extend outward from the lower template, each protruding end has a connecting column extending downward, each connecting column is provided with a limit hole, each limit hole is provided with a limit bolt that can abut inwardly against the side of the high base, each limit column has a slider extending inward at the lower end, and a sliding groove matching the slider is provided on the side of the high base.

6. The curing mold for testing the bonding strength of an adhesive to metal according to claim 3 or 4, characterized in that: The lower template has the same width as the upper metal sheet and the lower metal sheet.

7. The curing mold for testing the bonding strength of an adhesive to metal according to claim 3 or 4, characterized in that: The width of the lower template is greater than the width of the upper metal sheet and the lower metal sheet. A first elastic clamping plate for clamping and limiting the upper metal sheet from both sides is provided on the high base, and a second elastic clamping plate for clamping and limiting the lower metal sheet from both sides is provided on the low base. The first elastic clamping plate and the second elastic clamping plate have the same structure and can both slide inward and outward along the width direction of the lower template.

8. The curing mold for testing the bonding strength of adhesive to metal according to claim 7, characterized in that: The first elastic clamping plate includes a pair of clamping plates symmetrically arranged on the upper part of the high base along the length direction of the lower template, a flexible pad is provided on the inner side of each clamping plate, a corresponding fixing seat is provided on the high base outside each clamping plate, a connecting screw is provided between the clamping plate and the fixing seat, one end of the connecting screw is fixed on the clamping plate, and the other end passes through a corresponding through hole on the fixing seat and extends outward, a spring for pushing the clamping plate inward is sleeved on the connecting screw between the fixing seat and the clamping plate, and a fixing nut is provided on the protruding end of the connecting screw, which cooperates with the fixing seat to stop the clamping plate from moving inward.

9. The curing mold for testing the bonding strength of adhesive to metal according to claim 8, characterized in that: The clamping plate on one side of the first elastic clamping plate is fixedly connected to the clamping plate on the same side of the second elastic clamping plate as a whole, and glue absorbing cotton is provided at the connection corresponding to the overlapping section of the upper metal sheet and the lower metal sheet.

10. The curing mold for testing the bonding strength of adhesive to metal according to claim 1, characterized in that: Both ends of the lower template are provided with supporting vertical plates, and both ends of the supporting vertical plates are respectively fixedly connected with the lower template and the upper template as a whole.

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