Die for manufacturing steel wire shear strength sample

Abstract

The utility model relates to a mold for manufacturing a steel wire shear strength sample, the mold comprises an upper mold plate and a lower mold plate which are attached to each other, the upper mold plate is provided with two groups of first glue grooves, the first glue grooves penetrate through the thickness direction of the upper mold plate, and the two groups of first glue grooves are arranged at intervals along the width direction of the upper mold plate; the first glue grooves in one group are arranged at intervals along the length direction of the upper template; the lower mold plate is provided with two groups of second glue grooves, the second glue grooves penetrate through the thickness direction of the lower mold plate, the two groups of second glue grooves are arranged at intervals in the width direction of the lower mold plate, the second glue grooves in one group are arranged at intervals in the length direction of the lower mold plate, and the first glue grooves and the second glue grooves are in one-to-one correspondence and are communicated with each other to form complete glue grooves; a plurality of steel wire grooves are formed in the surface of the side, close to the upper mold plate, of the lower mold plate, the two ends of each steel wire groove penetrate through the lower mold plate, and each steel wire groove is connected with two second glue grooves. The problems that demolding is not easy when a sample is prepared through an existing mold, and rubber is likely to remain on a steel wire can be solved.

Description

Technical Field

[0001] The present application relates to the field of test specimen preparation tools, and in particular to a mold for making steel wire shear strength specimens. Background Art

[0002] Steel wire wound reinforced polyethylene composite pipe (steel wire pipe for short) is a high-performance multi-layer composite pipe obtained by fixing the steel wire with a bonding resin modified by maleic anhydride grafting after the steel wire is wound left-handedly or right-handedly around a plastic core tube. Shear strength is an important indicator of adhesives (MAH-modified bonding resins). Shear strength indicates the maximum breaking load per unit area of ​​an adhesive-type adhesive when subjected to tangential stress. According to the force mode, it can be divided into tensile shear strength, compressive shear strength, torsional shear strength, bending shear strength, etc. Among them, tensile shear strength is the most commonly used. The national standard GB / T32439-2015 also has clear provisions on the steel wire shear performance of bonding resins.

[0003] For example, the Chinese utility model patent numbered CN219996764U applied by Shanghai Bangzhong Company discloses a sample structure for testing the shear strength of adhesive resin steel wire, wherein the sample preparation structure described therein can conveniently test the shear strength of the steel wire.

[0004] The above-mentioned special structure specimens often require special molds for preparation. For example, the Chinese utility model patent with patent number CN220188174U applied by Shanghai Bangzhong Company discloses a mold structure for preparing wire shearing splines, including a top plate, a fixed mold plate and a bottom plate arranged in sequence from top to bottom, and a plurality of molding grooves for forming splines are arranged at intervals on the fixed mold plate, and the plurality of molding grooves are arranged at intervals along the length direction of the fixed mold plate. Each of the molding grooves includes a wire groove and two hot melt adhesive grooves, and the two hot melt adhesive grooves are arranged at intervals along the width direction of the fixed mold plate. The wire groove is opened along the width direction of the fixed mold plate and is connected with the two hot melt adhesive grooves.

[0005] Although the above-mentioned special mold can produce the above-mentioned special structure sample, it is difficult to demould when preparing the sample with this mold. On the other hand, when the sample is taken out of the mold, there is a lot of excess rubber on the sample steel wire, and the subsequent processing is more complicated. Among them, the reason why there is a lot of excess rubber on the sample steel wire is that the fixed template in the mold is an integrated structure, and the glue groove used for pouring hot melt glue or bonding resin completely penetrates the fixed template. In order to make the steel wire located at the geometric center of the resin block, the depth of the steel wire groove on the fixed template for placing the steel wire must reach the geometric center of the glue groove. Therefore, the depth of the steel wire groove is about half of the thickness of the fixed template. In this way, the glue in the glue groove will flow into the steel wire groove after melting, thereby forming a plate-shaped rubber block on the steel wire with a height of about half the height of the resin block. The thickness of the plate-shaped rubber block is the width of the steel wire groove, and the height of the plate-shaped rubber block is the depth of the steel wire groove. The reason why the above-mentioned template is difficult to demould is that on the one hand, a large amount of rubber is injected into the steel wire groove, and on the other hand, the glue groove penetrates the fixed template that is integrated, and the rubber block in the glue groove needs to move a large distance before it can be demoulded. Therefore, a mold is designed for the production of steel wire shear strength test specimens to solve the above problems. Utility Model Content

[0006] In order to improve the problem that demoulding is difficult when preparing samples with current molds and rubber residue is easily left on the steel wire, the present application provides a mold for making steel wire shear strength samples.

[0007] The present application provides a mold for making a steel wire shear strength test specimen using the following technical solution:

[0008] A mold for making a steel wire shear strength test specimen comprises an upper template and a lower template which are fitted together, wherein the upper template is provided with two groups of first glue grooves, wherein the first glue grooves penetrate the thickness direction of the upper template, and the two groups of the first glue grooves are arranged at intervals along the width direction of the upper template, and each group of the first glue grooves comprises a plurality of first glue grooves, and the first glue grooves in one group are arranged at intervals along the length direction of the upper template; the lower template is provided with two groups of second glue grooves, wherein the second glue grooves penetrate the thickness direction of the lower template, and the two groups of the second glue grooves are arranged at intervals along the width direction of the lower template, and each group of the second glue grooves comprises a plurality of second glue grooves, and the second glue grooves in one group are arranged at intervals along the length direction of the lower template, and the first glue grooves and the second glue grooves correspond to each other and are connected to each other; a plurality of steel wire grooves are provided on a surface of one side of the lower template close to the upper template, and both ends of the steel wire grooves penetrate the lower template, and the plurality of the steel wire grooves are arranged at intervals along the length direction, and each steel wire groove connects two of the second glue grooves, and after the upper template and the lower template are fitted together, the first glue grooves and the second glue grooves form a complete glue groove.

[0009] Optionally, the width of the steel wire groove is the same as the depth of the steel wire groove, and the width of the steel wire groove is 0.6~1.5mm.

[0010] Optionally, the first glue groove and the second glue groove are square, and the side lengths of the first glue groove and the second glue groove are 9~11 mm; the distance between two adjacent groups of the first glue grooves is the same as the distance between two adjacent groups of the second glue grooves, and the distances are both 20~30 mm.

[0011] Optionally, the upper template and the lower template have the same thickness, and the thickness of the upper template and the lower template is 1 / 2 of the side length of the first glue groove and the second glue groove.

[0012] Optionally, the roughness of the inner walls of the first glue groove, the second glue groove and the wire groove is Ra=0.1~0.3μm.

[0013] Optionally, a plurality of first glue grooves in a group of the first glue grooves are arranged at equal intervals, a plurality of second glue grooves in a group of the second glue grooves are arranged at equal intervals, and a distance between two adjacent first glue grooves is the same as a distance between two adjacent second glue grooves.

[0014] Optionally, the mold further includes an upper pad and a lower pad, wherein the upper pad is covered on the top of the upper template, the lower pad is padded on the bottom of the lower template, and the upper template and the lower template are clamped between the upper pad and the lower pad.

[0015] Optionally, a first high-temperature cloth is provided between the upper pad and the upper template, and a second high-temperature cloth is provided between the lower pad and the lower template.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] Compared with the current mold, the mold in the present application adopts a split setting, including an upper and lower template, the first glue groove opened on the upper template and the second glue groove opened on the lower template cooperate to form a complete glue groove, which is used to form a glue block structure in the sample, and the depth of the steel wire groove opened on the lower template does not need to completely penetrate the lower template, but only needs to be able to accommodate the steel wire. Therefore, even if the glue in the glue groove is melted, it is not easy to enter the steel wire groove, and there is less residual glue on the steel wire; in addition, after the sample is prepared, the sample can be taken out by separating the upper and lower templates;

[0018] By controlling the roughness of the inner wall of the rubber groove and the wire groove, it is further convenient to take out the prepared sample;

[0019] The mold also includes upper and lower pads and high-temperature cloth, which can seal the openings at both ends of the first glue groove and the second glue groove. After the sample preparation is completed, it is only necessary to separate the upper and lower wooden templates from the upper and lower pads and remove the high-temperature cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1is a side view of the current specimen preparation mold.

[0021] Figure 2 It is a schematic diagram of the overall structure of the mold in Example 1 of the present application.

[0022] Figure 3 It is a schematic diagram of the structure of the template in Example 1 of the present application.

[0023] Figure 4 It is a schematic diagram of the structure of the template under Example 1 of the present application.

[0024] Explanation of the accompanying drawings: 1. Fixed template; 11. Steel wire groove; 2. Upper pad; 3. First high-temperature cloth; 4. Upper template; 5. Lower template; 6. Second high-temperature cloth; 7. Lower pad; 8. First glue groove; 9. Second glue groove. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] like Figure 1 As shown, in the Chinese utility model patent with patent number CN220188174U applied by Shanghai Bangzhong Company, in order to make the steel wire located at the geometric center of the resin block, the depth of the steel wire groove 11 on the fixed template 1 for placing the steel wire is about half of the thickness of the fixed template 1. Therefore, the rubber in the rubber groove will flow into the steel wire groove 11 after melting, thereby forming a plate-shaped rubber block on the steel wire with a height of about half the height of the resin block. The residual rubber on the steel wire needs subsequent treatment to be removed.

[0027] Based on the above, the present application embodiment discloses a mold for making a steel wire shear strength test specimen, such as Figure 2-Figure 4 As shown, it includes an upper template 4 and a lower template 5 that fit each other, a first high-temperature cloth 3 is laid on the top of the upper template 4, a second high-temperature cloth 6 is provided on the bottom of the lower template 5, an upper pad 2 is provided on the first high-temperature cloth 3, and a lower pad 7 is provided under the second high-temperature cloth 6.

[0028] The upper template 4 is provided with two groups of first glue grooves 8, which run through the thickness direction of the upper template 4. The two groups of first glue grooves 8 are arranged at intervals along the width direction of the upper template 4. Each group of first glue grooves 8 includes a number of first glue grooves 8. In this embodiment, a group of first glue grooves 8 includes 9 first glue grooves 8, and the first glue grooves 8 in a group are arranged at equal intervals along the length direction of the upper template 4.

[0029] The lower template 5 is provided with two groups of second glue grooves 9, which penetrate the thickness direction of the lower template 5. The two groups of second glue grooves 9 are arranged at intervals along the width direction of the lower template 5. Each group of second glue grooves 9 includes a plurality of second glue grooves 9. In this embodiment, one group of second glue grooves 9 includes 9 second glue grooves 9, and the second glue grooves 9 in one group are arranged at equal intervals along the length direction of the lower template 5. The distance between the two first glue grooves 8 in one group is the same as the distance between the two second glue grooves 9 in one group. Therefore, after the upper template 4 and the lower template 5 are attached, the first glue grooves 8 and the second glue grooves 9 correspond to each other and are connected to each other, thereby forming a completed glue groove. After the glue material is placed in the first glue grooves 8 and the second glue grooves 9 that are connected to each other, the glue material melts to form a glue block.

[0030] In this embodiment, the first glue groove 8 and the second glue groove 9 are both square, and the side length of the first glue groove 8 and the second glue groove 9 is 9-11 mm; the distance between two adjacent groups of first glue grooves 8 is the same as the distance between two adjacent groups of second glue grooves 9, and the distance is 20-30 mm. The thickness of the upper template 4 and the lower template 5 is the same, and the thickness of the upper template 4 and the lower template 5 is 1 / 2 of the side length of the first glue groove 8 and the second glue groove 9. Since the thickness of the upper and lower templates 5 is 1 / 2 of the side length of the first glue groove 8 and the second glue groove 9, the depth of the first glue groove 8 and the second glue groove 9 is 1 / 2 of the side length. After the upper template 4 and the lower template 5 are attached, the first glue groove 8 and the second glue groove 9 form a complete square glue groove.

[0031] A plurality of steel wire grooves 11 are provided on the surface of one side of the lower template 5 close to the upper template 4. In this embodiment, the number of the steel wire grooves 11 is 9, and both ends of the steel wire grooves 11 pass through the lower template 5. The plurality of steel wire grooves 11 are arranged at equal intervals along the length direction, and each steel wire groove 11 connects two second rubber grooves 9. The width of the steel wire groove 11 is the same as the depth of the steel wire groove 11, and the width of the steel wire groove 11 is 0.6-1.5 mm.

[0032] The roughness of the inner walls of the first glue groove 8, the second glue groove 9 and the wire groove 11 is Ra=0.1~0.3μm.

[0033] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A mold for making a steel wire shear strength test specimen, characterized in that: The invention comprises an upper template (4) and a lower template (5) which are fitted together, the upper template (4) being provided with two groups of first glue grooves (8), the first glue grooves (8) running through the thickness direction of the upper template (4), the two groups of first glue grooves (8) being arranged at intervals along the width direction of the upper template (4), each group of first glue grooves (8) comprising a plurality of first glue grooves (8), the first glue grooves (8) in one group being arranged at intervals along the length direction of the upper template (4); the lower template (5) being provided with two groups of second glue grooves (9), the second glue grooves (9) running through the thickness direction of the lower template (5), the two groups of second glue grooves (9) being arranged at intervals along the width direction of the lower template (5), Each group of the second glue grooves (9) comprises a plurality of second glue grooves (9), wherein the second glue grooves (9) in one group are arranged at intervals along the length direction of the lower template (5), and the first glue grooves (8) and the second glue grooves (9) correspond to each other and are interconnected; a plurality of steel wire grooves (11) are provided on a surface of a side of the lower template (5) close to the upper template (4), and both ends of the steel wire grooves (11) penetrate the lower template (5), and the plurality of steel wire grooves (11) are arranged at intervals along the length direction, and each steel wire groove (11) connects two second glue grooves (9), and after the upper template (4) and the lower template (5) are bonded together, the first glue groove (8) and the second glue groove (9) form a complete glue groove.

2. A mold for making a steel wire shear strength test specimen according to claim 1, characterized in that: The width of the steel wire groove (11) is the same as the depth of the steel wire groove (11), and the width of the steel wire groove (11) is 0.6-1.5 mm.

3. A mold for making a steel wire shear strength test specimen according to claim 1, characterized in that: The first glue groove (8) and the second glue groove (9) are square, and the side lengths of the first glue groove (8) and the second glue groove (9) are 9 to 11 mm; the distance between two adjacent groups of the first glue grooves (8) is the same as the distance between two adjacent groups of the second glue grooves (9), and the distances are both 20 to 30 mm.

4. A mold for making a steel wire shear strength test specimen according to claim 3, characterized in that: The thickness of the upper template (4) and the lower template (5) are the same, and the thickness of the upper template (4) and the lower template (5) is 1 / 2 of the side length of the first glue groove (8) and the second glue groove (9).

5. The mold for making a steel wire shear strength test specimen according to claim 1, characterized in that: The roughness of the inner walls of the first glue groove (8), the second glue groove (9) and the wire groove (11) is Ra=0.1-0.3 μm.

6. A mold for making a steel wire shear strength test specimen according to claim 1, characterized in that: A plurality of first glue grooves (8) in a group of the first glue grooves (8) are arranged at equal intervals, a plurality of second glue grooves (9) in a group of the second glue grooves (9) are arranged at equal intervals, and a distance between two adjacent first glue grooves (8) is the same as a distance between two adjacent second glue grooves (9).

7. A mold for making a steel wire shear strength test specimen according to claim 1, characterized in that: The mould further comprises an upper pad (2) and a lower pad (7), wherein the upper pad (2) is arranged on the top of the upper mould plate (4), the lower pad (7) is arranged on the bottom of the lower mould plate (5), and the upper mould plate (4) and the lower mould plate (5) are sandwiched between the upper pad (2) and the lower pad (7).

8. A mold for making a steel wire shear strength test specimen according to claim 7, characterized in that: A first high-temperature cloth (3) is provided between the upper pad (2) and the upper mold plate (4), and a second high-temperature cloth (6) is provided between the lower pad (7) and the lower mold plate (5).

Images