Adhesive hardness testing device and testing method

Abstract

The invention relates to the technical field of adhesive hardness testing, in particular to an adhesive hardness testing device and method.The adhesive hardness testing device comprises a top limiting frame and a hardness tester body, a control frame is fixedly connected to the surface of the top limiting frame, a control panel is arranged on the surface of the control frame, and a bottom limiting frame is fixedly connected to the bottom end of the hardness tester body; limiting side blocks are fixedly connected to the four corners of the side face of the bottom limiting frame. Through the arrangement of the top limiting frame, the hardness tester body, the control frame, the control panel, the bottom limiting frame, the limiting side block and the limiting side base, the equipment can carry out adhesive hardness testing operation with more uniform force application, in the actual use process, a worker firstly places an adhesive sample needing to be tested in a first drawing frame, and then the adhesive sample is drawn into a second drawing frame; and electric push rods at the bottom ends of limiting pipe frames at the four corners of the side face of the limiting cover are controlled through a control panel on the surface of a control frame.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive hardness testing, and particularly to an adhesive hardness testing device and a testing method. Background Art

[0002] An adhesive is a substance with excellent adhesion performance. It connects objects by surface adhesion through adhesive force and cohesive force, and can join the same or two or more homogeneous or heterogeneous workpieces together. After curing, it is an organic or inorganic, natural or synthetic substance with sufficient strength, collectively referred to as an adhesive or bonding agent, binder, and is commonly abbreviated as glue. It is divided into natural macromolecular compounds, synthetic macromolecular compounds, or inorganic compounds. According to usage requirements, curing agents, accelerators, reinforcing agents, diluents, fillers, etc. are often incorporated into the adhesive. Classified by usage, it can also be divided into heat-resistant adhesives, sealants, structural adhesives, etc. Classified by application process, there are room-temperature curing adhesives, pressure-sensitive adhesives, etc. The application of adhesives can connect dissimilar materials and thin sheet materials, and the stress distribution at the bonded joints is uniform. Epoxy resins, chloroprene rubbers, and sealants are commonly used in container manufacturing and repair. In recent years, organic adhesives have been increasingly widely used, and the bonding technology has also matured and become one of the three major contemporary joining technologies, namely bonding, welding, and mechanical connection.

[0003] For example, the patent document with the publication number CN 221351046 U discloses a testing device for the curing hardness of a UV-curable adhesive, which relates to the technical field of testing the curing hardness of a UV-curable adhesive. To solve the problems that the existing equipment is difficult to unify the testing environmental conditions and the testing methods of each person are inconsistent, resulting in easy measurement errors. A sensor base is installed on the upper surface of the base, and pressure sensors are installed at the four corners of the upper end of the sensor base; an electric heating constant temperature table is installed on the upper end of the pressure sensor, and an aluminum heat-conducting tabletop is installed on the upper surface of the electric heating constant temperature table; a workbench is arranged above the aluminum heat-conducting tabletop, and a sample is arranged on the upper surface of the workbench; a bracket is installed above the rear end of the base, a support is installed on the outer wall of the bracket, a machine platform is arranged at the front end of the support, the rear end of the machine platform is fixedly connected to the support through two connecting rods, and a display screen is installed at the front end of the machine platform.

[0004] However, during the actual use of this structure, it is often only possible to perform the adhesive hardness test operation by simply pressing down with a Shore hardness tester. The overall stability of its test structure is relatively poor. During the actual test process, the hardness tester cannot perform a more stable positioning and pressing operation with the adhesive sample material. It is extremely easy to have uneven force application during the test, which affects the accuracy of the final test results. Moreover, it is impossible to quickly switch the loading and unloading of the tested adhesive sample material. At the same time, the device cannot perform precise limit protection operations on the entire test position during the test, unable to meet the daily use requirements. Therefore, it is urgent to design an adhesive hardness test device and test method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an adhesive hardness test device and test method to solve the problems raised in the above background technology. During the actual use of the existing structure, it is often only possible to perform the adhesive hardness test operation by simply pressing down with a Shore hardness tester. The overall stability of its test structure is relatively poor. During the actual test process, the hardness tester cannot perform a more stable positioning and pressing operation with the adhesive sample material. It is extremely easy to have uneven force application during the test, which affects the accuracy of the final test results. Moreover, it is impossible to quickly switch the loading and unloading of the tested adhesive sample material. At the same time, the device cannot perform precise limit protection operations on the entire test position during the test, unable to meet the daily use requirements.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: An adhesive hardness test device and test method, including a top limit frame. A hardness tester body is provided at the bottom end of the top limit frame. A control frame is fixedly connected to the surface of the top limit frame. A control panel is provided on the surface of the control frame. A bottom limit frame is fixedly connected to the bottom end of the hardness tester body. Limit side blocks are fixedly connected to the four corners of the side of the bottom limit frame. A limit side seat is fixedly connected to one end of the limit side block. A test receiving groove is opened at the center of the surface of the bottom limit frame. Top fixing side pads are provided on the four sides of the side of the bottom limit frame;

[0007] A limit cover. A limit cover is sleeved on the outer surface of the bottom limit frame. Air extraction pump covers are fixedly connected to the four sides of the side of the limit cover. Limit sliding rails are fixedly connected to the four sides of the top of the top limit frame. A test bottom frame is fixedly connected to the bottom end of the limit cover. A first sliding frame is movably connected inside the test bottom frame.

[0008] Preferably, one end of the first sliding frame is fixedly connected to a center seat. A second sliding frame is fixedly connected to one end of the center seat. Material grooves are opened on the surfaces of the first sliding frame and the second sliding frame.

[0009] Preferably, discharge inclined grooves are opened on the surface of the material groove. A test strip seat is provided at the center of the surface of the discharge inclined groove.

[0010] Preferably, top-fixing air bags are arranged on the four sides of the inner wall of the limiting cover through an air extraction pump cover, and top-fixing connection plates are fixedly connected to the sides of the top-fixing air bags.

[0011] Preferably, limiting pipe racks are fixedly connected to the four corners of the side surface of the limiting cover, and electric push rods are arranged at the bottom ends of the limiting pipe racks.

[0012] Preferably, a fitting rubber ring is arranged on the side surface of the limiting slide rail, and a limiting inner pad is arranged on the inner wall of the limiting slide rail.

[0013] Preferably, limiting sliders are fixedly connected to the four sides of the side surface of the top limiting frame, limiting rubber sleeves are arranged on the side surfaces of the limiting sliders, and connecting angle seats are fixedly connected to the four corners of the bottom side surface of the top limiting frame.

[0014] Preferably, damping rubber columns are fixedly connected to the bottom ends of the connecting angle seats, and the damping rubber columns are connected to the limiting side seats.

[0015] Preferably, mounting buckles are arranged on both sides of the inner wall of the test connection slot.

[0016] S1. Place the adhesive sample to be tested inside the first sliding frame, and send it into the test bottom frame at the bottom of the limiting cover along with the first sliding frame. Then, through the control panel on the surface of the control frame, control the electric push rods at the bottom ends of the limiting pipe racks at the four corners of the side surface of the limiting cover, so that they pull the limiting side seats connected to the four corners of the bottom side of the bottom limiting frame through the limiting side blocks inside the limiting pipe racks, so that the limiting side blocks and the limiting side seats drive the entire bottom limiting frame along the limiting pipe racks to perform a downward pressing operation with synchronous force application at the four corners inside the limiting cover. At this time, the hardness meter body connected to the surface of the bottom limiting frame and the entire top limiting frame at the top perform a stable downward pressing operation. The test structure at the bottom of the hardness meter body passes through the test connection slot at the center of the bottom limiting frame and directly acts on the adhesive sample inside the first sliding frame. At this time, the overall downward pressure is released from the four corners. Compared with the direct downward pressure at the top, the force received at the four corners is more uniform and stable;

[0017] S2. Make the damping rubber columns connected to the top ends of the limiting side seats enter the inside of the limiting pipe racks, and the damping rubber columns then pass through the connecting angle seats at the top ends to perform a limiting and fixing operation on the entire top limiting frame, that is, both the top limiting frame and the bottom limiting frame at the upper and lower ends of the hardness meter body can obtain stable limiting operations when pressing downward. And when the top limiting frame performs a downward pressing operation, the limiting sliders on the four sides of its side surface perform a limiting operation at the limiting inner pads on the inner wall of the limiting slide rail through the limiting rubber sleeves on the side surfaces. Then, the top limiting frame slides downward along the limiting slide rail, and the fitting rubber ring on the side surface of the limiting slide rail fits with the side surface of the top limiting frame for a fitting and limiting operation, so that the downward pressing of the top limiting frame is more stable.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] For the adhesive hardness testing device and testing method, by setting the top limit frame, hardness meter body, control frame, control panel, bottom limit frame, limit side block, limit side seat, test connection groove, limit cover, test bottom frame, first sliding frame, center seat, second sliding frame, material groove, discharge chute, test strip seat, limit pipe frame, electric push rod, connecting angle seat and damping rubber column, the device can perform more uniform force application for adhesive hardness testing operations. During actual use, the staff first place the adhesive sample to be tested inside the first sliding frame and send it into the test bottom frame at the bottom of the limit cover along with the first sliding frame. Then, through the control panel on the surface of the control frame, the electric push rods at the bottom ends of the limit pipe frames at the four corners on the side of the limit cover are controlled to pull the limit side seats connected to the four corners on the side of the bottom limit frame through the limit side blocks inside the limit pipe frames, so that the limit side blocks and limit side seats drive the entire bottom limit frame along the limit pipe frames to perform a downward pressing operation with synchronous force application at the four corners inside the limit cover. At this time, the hardness meter body connected to the surface of the bottom limit frame and the top limit frame as a whole can perform a stable downward pressing operation. The test structure at the bottom of the hardness meter body can pass through the test connection groove at the center of the bottom limit frame and directly act on the adhesive sample inside the first sliding frame. At this time, the overall downward pressure is released from the four corners. Compared with the direct top downward pressure, the force received at the four corners is more uniform and stable. Moreover, the entire bottom limit frame is limited inside the limit cover, ensuring that there will be no abnormal shaking problem during the overall downward pressing, greatly improving the data accuracy of the final hardness meter body test. At the same time, when the adhesive sample inside the first sliding frame is completed with the test, the first sliding frame and the second sliding frame can be positioned and slid back and forth through the center seat to quickly perform the switching of the test sample for loading and unloading operations. And the test position of the sample is above the test strip seat. Even when the sample is broken due to excessive test force, it can directly fall into the material groove and flow along the discharge chute to both sides without affecting subsequent tests, reflecting the practicality of the device design.

[0020] The adhesive hardness testing device and testing method, through the set top limit frame, bottom limit frame, limit side blocks, limit side seats, test connection grooves, limit covers, air extraction pump covers, limit sliding rails, top fixing air bags, top fixing connection plates, limit pipe frames, electric push rods, fitting rubber rings, limit inner pads, limit sliding blocks, limit rubber sleeves and installation buckles, further improve the overall use effect of the equipment. During daily use, when the electric push rod at the top of the limit pipe frame starts, while pulling the limit side blocks and limit side seats at the four corners on the side of the bottom limit frame, it can also make the damping rubber columns connected to the top of the limit side seats enter the inside of the limit pipe frame. The damping rubber columns then pass through the connecting angle seats at the top, enabling the overall top limit frame to perform a limit fixing operation. That is, both the top limit frame and the bottom limit frame at the upper and lower ends of the hardness tester body can obtain stable limit operations when being pressed downward. And when the top limit frame is pressed downward, the limit sliding blocks on the four sides of its side can perform limit operations at the limit inner pads on the inner wall of the limit sliding rail through the limit rubber sleeves on the side. Then the top limit frame slides downward along the limit sliding rail, and the fitting rubber rings on the side of the limit sliding rail are in contact and limit with the side of the top limit frame, making the downward pressing of the top limit frame more stable. At the same time, the top fixing air bags and top fixing connection plates on the four sides of the inner wall of the limit cover can perform air extraction and inflation operations through the air extraction pump covers on the four sides, thereby realizing the limit top connection operation at the top fixing side pads on the four sides of the bottom limit frame, ensuring the positioning and locking operation of the test connection groove inside the limit cover when completing the pressing for the adhesive hardness test, and ensuring more accurate test results. The test structure can also perform positioning and installation operations through the installation buckles on both sides inside the test connection groove, reflecting the comprehensiveness of the equipment design. Description of the Drawings

[0021] Figure 1 is a three-dimensional schematic diagram of the structure of the present invention;

[0022] Figure 2 is an overall schematic diagram of the limit cover structure of the present invention;

[0023] Figure 3 is an overall schematic diagram of the bottom limit frame structure of the present invention;

[0024] Figure 4 is an overall schematic diagram of the top limit frame structure of the present invention;

[0025] Figure 5 is an overall schematic diagram of the limit sliding rail structure of the present invention;

[0026] Figure 6 is an overall schematic diagram of the limit sliding rail structure of the present invention;

[0027] Figure 7 For the present invention Figure 1 is an enlarged schematic diagram of the structure at A in;

[0028] Figure 8 For the present invention Figure 1 An enlarged schematic view of the structure at position B in the present invention.

[0029] In the figure: 1, top limit frame; 2, hardness tester body; 3, control frame; 4, control panel; 5, bottom limit frame; 6, limit side block; 7, limit side seat; 8, test connection groove; 9, top fixing side pad; 10, limit cover; 11, air extraction pump cover; 12, limit slide rail; 13, test bottom frame; 14, first sliding frame; 15, center seat; 16, second sliding frame; 17, material groove; 18, discharge inclined groove; 19, test strip seat; 20, top fixing airbag; 21, top fixing connection plate; 22, limit pipe frame; 23, electric push rod; 24, fitting rubber ring; 25, limit inner pad; 26, limit slide block; 27, limit rubber sleeve; 28, connecting angle seat; 29, damping rubber column; 30, installation buckle. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1-8 , an embodiment provided by the present invention:

[0032] An adhesive hardness testing device and testing method, including a top limit frame 1, a hardness tester body 2 is arranged at the bottom end of the top limit frame 1, a control frame 3 is fixedly connected to the surface of the top limit frame 1, a control panel 4 is arranged on the surface of the control frame 3, a bottom limit frame 5 is fixedly connected to the bottom end of the hardness tester body 2, limit side blocks 6 are fixedly connected to the four corners of the side of the bottom limit frame 5, a limit side seat 7 is fixedly connected to one end of the limit side block 6, a test connection groove 8 is opened at the center of the surface of the bottom limit frame 5, top fixing side pads 9 are arranged on the four sides of the surface of the bottom limit frame 5, limit slide blocks 26 are fixedly connected to the four sides of the side of the top limit frame 1, a limit rubber sleeve 27 is arranged on the side of the limit slide block 26, connecting angle seats 28 are fixedly connected to the four corners of the bottom side of the top limit frame 1, a damping rubber column 29 is fixedly connected to the bottom end of the connecting angle seat 28, the damping rubber column 29 is connected to the limit side seat 7, installation buckles 30 are arranged on both sides of the inner wall of the test connection groove 8. While pulling the limit side blocks 6 and the limit side seats 7 at the four corners of the side of the bottom limit frame 5, it can also make the damping rubber column 29 connected to the top end of the limit side seat 7 enter the inside of the limit pipe frame 22, and the damping rubber column 29 then passes through the connecting angle seat 28 at the top end, so that the overall top limit frame 1 can be subjected to a limit fixing operation, that is, both the top limit frame 1 and the bottom limit frame 5 at the upper and lower ends of the hardness tester body 2 can obtain stable limit operations when being pressed downward.

[0033] The limiting cover 10 is sleeved on the outer surface of the bottom limiting frame 5. The four sides of the side surface of the limiting cover 10 are fixedly connected with an air extraction pump cover 11. The four sides of the top of the top limiting frame 1 are fixedly connected with limiting slide rails 12. The bottom end of the limiting cover 10 is fixedly connected with a test bottom frame 13. A first sliding frame 14 is movably connected inside the test bottom frame 13. One end of the first sliding frame 14 is fixedly connected with a center seat 15. One end of the center seat 15 is fixedly connected with a second sliding frame 16. Material grooves 17 are formed on the surfaces of the first sliding frame 14 and the second sliding frame 16. A discharge inclined groove 18 is formed on the surface of the material groove 17. A test strip seat 19 is arranged at the center of the surface of the discharge inclined groove 18. Top fixing air bags 20 are arranged on the four sides of the inner wall of the limiting cover 10 through the air extraction pump cover 11. The side surfaces of the top fixing air bags 20 are fixedly connected with top fixing connecting plates 21. The four corners of the side surface of the limiting cover 10 are fixedly connected with limiting pipe frames 22. Electric push rods 23 are arranged at the bottom ends of the limiting pipe frames 22. Fitting rubber rings 24 are arranged on the side surfaces of the limiting slide rails 12. Limiting inner pads 25 are arranged on the inner walls of the limiting slide rails 12. Control the electric push rods 23 at the bottom ends of the limiting pipe frames 22 at the four corners of the side surface of the limiting cover 10, so that they pull the limiting side seats 7 connected to the four corners of the side surface of the bottom limiting frame 5 through the limiting side blocks 6 inside the limiting pipe frames 22, so that the limiting side blocks 6 and the limiting side seats 7 drive the whole bottom limiting frame 5 to move along the limiting pipe frames 22 and perform a downward pressing operation with synchronous force application at the four corners inside the limiting cover 10. At this time, the hardness meter body 2 connected to the surface of the bottom limiting frame 5 and the top limiting frame 1 at the top end can perform a stable downward pressing operation.

[0034] Working principle: When in use, the operator first places the adhesive sample to be tested inside the first sliding rack 14 and sends it along with the first sliding rack 14 to the test base rack 13 at the bottom of the limit cover 10. Then, through the control panel 4 on the surface of the control rack 3, the electric push rods 23 at the bottom ends of the four corner limit pipe racks 22 on the side of the limit cover 10 are controlled to pull the limit side seats 7 connected to the four corners of the side of the bottom limit rack 5 through the limit side blocks 6 inside the limit pipe racks 22, so that the limit side blocks 6 and the limit side seats 7 drive the entire bottom limit rack 5 to move along the limit pipe racks 22 and perform a downward pressing operation with synchronous force application at the four corners inside the limit cover 10. At this time, the hardness meter body 2 connected to the surface of the bottom limit rack 5 and the top limit rack 1 at the top can perform a stable downward pressing operation. The test structure at the bottom of the hardness meter body 2 can pass through the test connection slot 8 in the center of the bottom limit rack 5 and directly act on the adhesive sample inside the first sliding rack 14. At this time, the overall downward pressure is released from the four corners. Compared with the direct downward pressure from the top, the force is more evenly and stably distributed at the four corners. Moreover, the entire bottom limit rack 5 is limited inside the limit cover 10 to ensure that there will be no abnormal shaking problem during the overall downward pressing, greatly improving the data accuracy of the final test by the hardness meter body 2. At the same time, when the adhesive sample inside the first sliding rack 14 is completed with the test, the first sliding rack 14 and the second sliding rack 16 can be positioned and slid back and forth through the center seat 15 to quickly perform the switching of the test sample for loading and unloading. And the test position of the sample is above the test strip seat 19. Even if the sample breaks due to excessive test force, it can directly fall into the material trough 17 and flow along the discharge chute 18 to both sides without affecting the subsequent test. During the daily use process, when the electric push rod 23 at the top of the limit pipe rack 22 is started to pull the limit side blocks 6 and the limit side seats 7 at the four corners of the side of the bottom limit rack 5, the damping rubber columns 29 connected to the top of the limit side seats 7 can also enter the inside of the limit pipe racks 22. The damping rubber columns 29 then pass through the connecting angle seats 28 at the top to perform a limiting and fixing operation on the entire top limit rack 1, that is, both the top limit rack 1 and the bottom limit rack 5 at the upper and lower ends of the hardness meter body 2 can obtain stable limiting operations when pressing downward. And when the top limit rack 1 performs a downward pressing operation, the limit sliding blocks 26 on the four sides of its side can perform a limiting operation at the limit inner pad 25 on the inner wall of the limit sliding rail 12 through the limit rubber sleeves 27 on the side. Then the top limit rack 1 slides downward along the limit sliding rail 12, and the fitting rubber rings 24 on the side of the limit sliding rail 12 are in contact with the side of the top limit rack 1 for a fitting and limiting operation, making the downward pressing of the top limit rack 1 more stable. At the same time, the top fixing air bags 20 and the top fixing connecting plates 21 on the four sides of the inner wall of the limit cover 10 can perform air extraction and inflation operations through the air extraction pump covers 11 on the four sides, so as to achieve a limiting and top-connecting operation at the top fixing side pads 9 on the four sides of the side of the bottom limit rack 5, ensuring that the test connection slot 8 is positioned and locked inside the limit cover 10 when the hardness of the adhesive is tested and pressed, and ensuring a more accurate test result.The test structure can also be positioned and installed through the installation buckles 30 on both sides inside the test slot 8. The above is the entire working principle of the present invention.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An adhesive hardness testing device, comprising a top limit frame (1), characterized in that: The bottom end of the top limit frame (1) is provided with a hardness tester body (2). The surface of the top limit frame (1) is fixedly connected with a control frame (3). The surface of the control frame (3) is provided with a control panel (4). The bottom end of the hardness tester body (2) is fixedly connected with a bottom limit frame (5). The four corners of the side surface of the bottom limit frame (5) are fixedly connected with limit side blocks (6). One end of the limit side block (6) is fixedly connected with a limit side seat (7). A test connection groove (8) is opened at the center of the surface of the bottom limit frame (5). The four sides of the side surface of the bottom limit frame (5) are provided with top fixing side pads (9); A limit cover (10). The outer surface of the bottom limit frame (5) is sleeved with a limit cover (10). The four sides of the side surface of the limit cover (10) are fixedly connected with an air extraction pump cover (11). The four sides of the top of the top limit frame (1) are fixedly connected with limit sliding rails (12). The bottom end of the limit cover (10) is fixedly connected with a test bottom frame (13). A first sliding frame (14) is movably connected inside the test bottom frame (13).

2. The adhesive hardness testing device according to claim 1, characterized in that: One end of the first sliding frame (14) is fixedly connected with a center seat (15). One end of the center seat (15) is fixedly connected with a second sliding frame (16). Material grooves (17) are opened on the surfaces of the first sliding frame (14) and the second sliding frame (16).

3. The adhesive hardness testing device according to claim 2, wherein: A discharge inclined groove (18) is opened on the surface of the material groove (17). A test strip seat (19) is arranged at the center of the surface of the discharge inclined groove (18).

4. The adhesive hardness testing device according to claim 1, characterized in that: Top fixing air bags (20) are arranged on the four sides of the inner wall of the limit cover (10) through the air extraction pump cover (11). The side surface of the top fixing air bag (20) is fixedly connected with a top fixing connection plate (21).

5. The adhesive hardness testing device according to claim 1, characterized in that: The four corners of the side surface of the limit cover (10) are fixedly connected with limit pipe frames (22). An electric push rod (23) is arranged at the bottom end of the limit pipe frame (22).

6. The adhesive hardness testing device according to claim 1, characterized in that: A fitting rubber ring (24) is arranged on the side surface of the limit sliding rail (12). A limit inner pad (25) is arranged on the inner wall of the limit sliding rail (12).

7. The adhesive hardness testing device according to claim 1, characterized in that: Limit sliding blocks (26) are fixedly connected to the four sides of the side surface of the top limit frame (1). A limit rubber sleeve (27) is arranged on the side surface of the limit sliding block (26). Connection angle seats (28) are fixedly connected to the four corners of the bottom side surface of the top limit frame (1).

8. The adhesive hardness testing device according to claim 7, wherein: The bottom end of the connection angle seat (28) is fixedly connected with a damping rubber column (29). The damping rubber column (29) is connected with the limit side seat (7).

9. The adhesive hardness testing device according to claim 1, wherein: Installation buckles (30) are arranged on both sides of the inner wall of the test connection groove (8).

10. According to the adhesive hardness test method described in claim 1, it is characterized in that: S1. Place the adhesive sample to be tested inside the first retractable rack (14), and send it along with the first retractable rack (14) to the test base rack (13) at the bottom of the limit cover (10). Then, through the control panel (4) on the surface of the control rack (3), control the electric push rods (23) at the bottom ends of the four-corner limit pipe racks (22) on the side of the limit cover (10), so that they pull the limit side seats (7) connected to the four corners of the side of the bottom limit rack (5) through the limit side blocks (6) inside the limit pipe racks (22), causing the limit side blocks (6) and the limit side seats (7) to drive the entire bottom limit rack (5) along the limit pipe racks (22) to perform a downward pressing operation with synchronous force application at the four corners inside the limit cover (10). At this time, the hardness meter body (2) connected to the surface of the bottom limit rack (5) and the top limit rack (1) at the top are pressed downward stably. The test structure at the bottom of the hardness meter body (2) passes through the test connection slot (8) at the center of the bottom limit rack (5) and directly acts on the adhesive sample inside the first retractable rack (14). At this time, the overall downward pressure is released from the four corners. Compared with the direct downward pressure from the top, the force received at the four corners is more uniform and stable. S2. Make the damping rubber columns (29) connected to the top ends of the limit side seats (7) enter the inside of the limit pipe racks (22). The damping rubber columns (29) then pass through the connecting angle seats (28) at the top ends to perform a limit fixing operation on the entire top limit rack (1), which also enables stable limit operations for both the top limit rack (1) and the bottom limit rack (5) at the upper and lower ends of the hardness meter body (2) during downward pressing. When the top limit rack (1) is pressed downward, the limit sliding blocks (26) on its four sides perform limit operations at the limit inner pads (25) on the inner wall of the limit sliding rails (12) through the limit rubber sleeves (27) on the sides. Then, the top limit rack (1) slides downward along the limit sliding rails (12). The fitting rubber rings (24) on the sides of the limit sliding rails (12) are in fitting limit operation with the sides of the top limit rack (1), making the downward pressing of the top limit rack (1) more stable.

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