Mold for testing tensile adhesive strength of silicone structural adhesive

Abstract

The utility model discloses a kind of silicone structural adhesive tensile bonding strength test piece forming mould, including base, first template and second template, base is provided with recess, two first, second template form test piece mould and are placed in recess to form rectangle forming cavity, wherein first template is rectangular plate, second template is T-shaped strip and convex part extends into first template. Demoulding hole is provided in the center of recess groove bottom, clamping rod, movable shaft, torsion spring and the like components are installed in the strip-shaped groove of base two sides, and the template push rod of clamping rod end portion can be tightly pushed first template. The mould structure disclosed in the utility model is simple, and assembly and disassembly are convenient, forming precision is high, demoulding is convenient, can effectively improve the quality and efficiency of silicone structural adhesive tensile bonding strength test piece preparation, provide reliable test piece for detection.

Description

Technical Field

[0001] This utility model relates to the field of building material testing technology, specifically a molding die for a silicone structural adhesive tensile bond strength test specimen. Background Technology

[0002] Silicone structural adhesives, widely used in building curtain walls, door and window assembly, and other fields, have tensile bond strength as a key indicator for evaluating product quality and performance. When testing the tensile bond strength of silicone structural adhesives, it is necessary to prepare standard-compliant specimens, and the design and performance of the specimen molding die directly affect the specimen quality. Existing molds for molding tensile bond strength test specimens of silicone structural adhesives have several shortcomings. Some molds are complex in structure, with cumbersome assembly and disassembly processes, resulting in low specimen preparation efficiency. Other molds struggle to guarantee the accuracy of specimen shape and dimensions during molding, affecting the accuracy of test results. Furthermore, due to unreasonable mold design, specimen damage or demolding difficulties are common during demolding, reducing the specimen pass rate and increasing testing costs. Moreover, the existing molds are not adequately designed for clamping and fixing, failing to effectively prevent mold loosening during molding, which could lead to silicone structural adhesive overflow or specimen deformation. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a molding die for a silicone structural adhesive tensile bonding strength test specimen, so as to achieve high efficiency and quality in specimen molding and ensure the accuracy of test results.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: a silicone structural adhesive tensile bonding strength test specimen molding mold, including a base, a first template and a second template, the base is provided with a groove, the two first templates and the second template form a test specimen mold and are set in the groove, and the mold formed by the first template and the second template has a rectangular molding cavity at the center.

[0005] In a preferred embodiment, the first template is a rectangular plate structure, the second template is a T-shaped strip structure, the first template is located on both sides of the groove, the second template is located at both ends of the groove, and the protrusion of the second template extends between the two first templates.

[0006] In a preferred embodiment, a demolding hole is provided at the center of the bottom of the groove.

[0007] In a preferred embodiment, the base has strip grooves on both sides, clamping rods are installed in the strip grooves, and the ends of the clamping rods are provided with template push rods for pressing the first template.

[0008] In a preferred embodiment, a horizontal movable shaft is movably installed inside the strip groove, and the movable shaft passes through the lower end of the clamping rod and is fixedly connected to the clamping rod. A fixing block is provided on the side wall of the strip groove, and the movable shaft is also set through the horizontal hole on the fixing block. A torsion spring is installed in the horizontal hole of the fixing block, and the two ends of the torsion spring are fixed to the inner wall of the horizontal hole of the fixing block and the outer wall of the movable shaft, respectively.

[0009] In a preferred embodiment, there are two clamping rods in the strip groove on one side, which are respectively fixed to the two ends of the movable shaft extending from both ends of the fixed block, and a single template push rod is set at the upper end of the two clamping rods.

[0010] In a preferred embodiment, a connecting rod is provided between the two clamping rods to connect the two clamping rods into a whole, and a manual lever is provided on the connecting rod.

[0011] In a preferred embodiment, a connecting seat is provided at each end of one side of the template push rod, and the two connecting seats are respectively hinged to the upper ends of the two clamping rods.

[0012] The silicone structural adhesive tensile bond strength test specimen molding die provided by this utility model has the following beneficial effects by adopting the above structure: (1) By using the base to limit and fix the template, the dimensional accuracy of the molded specimen can be effectively controlled, and the test accuracy can be improved; (2) The clamping rods on both sides of the base can achieve stable clamping of the template. When it is necessary to install or remove the template, the clamping rods can be operated by manually turning the lever and connecting rod. The elastic reset function of the torsion spring can be used to easily complete the clamping and loosening of the template. The operation process is simple and quick, which greatly improves the efficiency of specimen preparation. At the same time, it effectively prevents problems such as silicone structural glue overflow or specimen deformation caused by mold loosening during the molding process. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the elevation structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the single-sided clamping rod structure of this utility model.

[0016] In the diagram: 1. Base; 2. Groove; 3. First template; 4. Second template; 5. Demolding hole; 6. Strip groove; 7. Movable shaft; 8. Clamping rod; 9. Template push rod; 10. Fixing block; 11. Torsion spring; 12. Manual lever; 13. Connecting rod; 14. Connecting seat. Detailed Implementation

[0017] like Figure 1-3In the present invention, a mold for forming a tensile bonding strength test specimen of silicone structural adhesive includes a base 1, a first template 3 and a second template 4. The base 1 is provided with a groove 2. The two first templates 3 and the second template 4 form a test specimen mold and are set in the groove 2. The mold formed by the first template 3 and the second template 4 has a rectangular forming cavity at its center.

[0018] In the preferred embodiment, the first template 3 is a rectangular plate structure, the second template 4 is a T-shaped strip structure, the first template 3 is located on both sides of the groove 2, the second template 4 is located at both ends of the groove 2, and the protrusion of the second template 4 extends into the space between the two first templates 3.

[0019] In a preferred embodiment, a demolding hole 5 is provided at the center of the bottom of the groove 2.

[0020] In a preferred embodiment, the base 1 has strip grooves 6 on both sides, and clamping rods 8 are installed in the strip grooves 6. The ends of the clamping rods 8 are provided with template push rods 9 for pressing the first template 3.

[0021] In a preferred embodiment, a horizontal movable shaft 7 is movably installed inside the strip groove 6, and the movable shaft 7 passes through the lower end of the clamping rod 8 and is fixedly connected to the clamping rod 8; A fixing block 10 is provided on the side wall of the strip groove 6, and the movable shaft 7 is also provided through the horizontal hole on the fixing block 10. A torsion spring 11 is installed in the horizontal hole of the fixing block 10, and the two ends of the torsion spring 11 are fixed to the inner wall of the horizontal hole of the fixing block 10 and the outer wall of the movable shaft 7, respectively.

[0022] In the preferred embodiment, there are two clamping rods 8 in the single-sided strip groove 6, which are respectively fixed on the two ends of the movable shaft 7 extending from both ends of the fixed block 10, and a single template push rod 9 is set at the upper end of the two clamping rods 8.

[0023] In a preferred embodiment, a connecting rod 13 is provided between the two clamping rods 8, the connecting rod 13 connects the two clamping rods 8 to form a whole, and a manual lever 12 is provided on the connecting rod 13.

[0024] In a preferred embodiment, a connecting seat 14 is provided at both ends of one side of the template push rod 9, and the two connecting seats 14 are respectively hinged to the upper ends of the two clamping rods 8. The silicone structural adhesive tensile bond strength specimen molding die disclosed in this utility model is used for specimen preparation as follows: Place the base 1 stably on the operating table with the groove 2 facing upwards. Place the two first templates 3 on both sides of the groove 2 respectively. Move the manual lever 12 to unfold the clamping lever 8. Then, install the second template 4 at both ends of the groove 2, ensuring that the protrusion of the second template 4 accurately extends between the two first templates 3 to form a rectangular molding cavity. Release the manual lever 12, and through the cooperation of the movable shaft 7 and the torsion spring 11, make the template push rod 9 press against the first template 3, ensuring that all parts of the mold are tightly connected and preventing loosening or displacement in subsequent operations.

[0025] Lay parchment paper at the bottom of groove 2 and cover the demolding hole 5. Slowly inject the prepared silicone structural adhesive into the molding cavity, maintaining a uniform filling speed to avoid air bubbles. Use tools to lightly compact and smooth the silicone structural adhesive, ensuring the adhesive surface is flush with the upper surface of the mold to guarantee the dimensional accuracy of the specimen.

[0026] After filling, place the mold in a suitable environment and wait for the silicone structural adhesive to cure and solidify. The curing time and temperature should be appropriately controlled based on the characteristics of the silicone structural adhesive and environmental conditions.

[0027] After the silicone structural adhesive has fully cured, demolding is performed. Using a suitable tool (such as a push rod or air gun), apply external force from below through the demolding hole 5 at the center of the groove 2 on base 1 to separate the specimen from base 1. If resistance is encountered during demolding, the mold can be gently shaken, but care must be taken to avoid excessive force that could damage the specimen. After demolding, the specimen is cleaned and inspected. If it meets the testing requirements, it can be used to test the tensile bond strength of the silicone structural adhesive.

Claims

1. A molding die for a silicone structural adhesive tensile bond strength test specimen, characterized in that: It includes a base (1), a first template (3) and a second template (4). The base (1) is provided with a groove (2). The two first templates (3) and the second template (4) form a test piece mold and are placed in the groove (2). The mold formed by the first template (3) and the second template (4) has a rectangular forming cavity at its center.

2. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 1, characterized in that: The first template (3) is a rectangular plate structure, and the second template (4) is a T-shaped strip structure. The first template (3) is located on both sides of the groove (2), and the second template (4) is located at both ends of the groove (2). The protrusion of the second template (4) extends between the two first templates (3).

3. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 1, characterized in that: The groove (2) has a demolding hole (5) at the center of the bottom.

4. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 1, characterized in that: The base (1) has strip grooves (6) on both sides, and clamping rods (8) are installed in the strip grooves (6). The ends of the clamping rods (8) are provided with template push rods (9) for pressing the first template (3).

5. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 4, characterized in that: A horizontal movable shaft (7) is movably installed inside the strip groove (6). The movable shaft (7) passes through the lower end of the clamping rod (8) and is fixedly connected to the clamping rod (8). The side wall of the strip groove (6) is provided with a fixing block (10), and the movable shaft (7) is also set through the horizontal hole on the fixing block (10). A torsion spring (11) is installed in the horizontal hole of the fixing block (10), and the two ends of the torsion spring (11) are fixed to the inner wall of the horizontal hole of the fixing block (10) and the outer wall of the movable shaft (7), respectively.

6. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 5, characterized in that: The clamping rods (8) in the single-sided strip groove (6) are two, which are respectively fixed on the two ends of the movable shaft (7) extending from both ends of the fixed block (10), and a single template push rod (9) is set on the upper end of the two clamping rods (8).

7. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 5, characterized in that: A connecting rod (13) is provided between the two clamping rods (8), the connecting rod (13) connects the two clamping rods (8) to form a whole, and a manual lever (12) is provided on the connecting rod (13).

8. The molding die for a silicone structural adhesive tensile bond strength test specimen according to claim 5, characterized in that: The template push rod (9) has a connecting seat (14) at each end on one side, and the two connecting seats (14) are respectively hinged to the upper ends of the two clamping rods (8).

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