Adhesive resin steel wire shearing sample strip demolding device

Abstract

The utility model relates to an adhesive resin steel wire shearing sample strip demolding device which comprises a bottom plate and a plurality of push-out rods, the push-out rods are arranged on the bottom plate at intervals, the push-out rods correspond to glue grooves in a mold one to one, the side length of each push-out rod is smaller than that of each glue groove, and the difference between the side length of each push-out rod and the side length of each glue groove ranges from 0.5 mm to 1.5 mm. The device has the effects that the device is matched with a special mold, and the sample is not prone to being damaged when taken out of the mold.

Description

Technical Field

[0001] The present application relates to the field of sample preparation demoulding devices, and in particular to a demoulding device for shearing a resin-bonded steel wire strip. 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 structure mold can well prepare the special structure of the sample structure, the special structure also makes it difficult to demould after using the special mold to prepare the above-mentioned sample. Although the push pin with a shape similar to the hot melt adhesive groove on the fixed mold plate can be used to push the sample out of the mold in turn, when pushing the sample, it is easy to cause the steel wire on the sample to bend or even separate from the glue block. Therefore, a demoulding device that is suitable for the special mold and is not easy to damage the sample when taking it out of the mold is needed. Utility Model Content

[0006] In order to obtain a demoulding device that is adapted to a special mold and is not likely to cause damage to the sample when taking the sample out of the mold, the present application provides a demoulding device for bonding resin steel wire shearing strips.

[0007] The present application provides a bonding resin steel wire shearing spline demoulding device adopts the following technical solution:

[0008] A resin bonding steel wire shearing spline demoulding device comprises a bottom plate and a plurality of ejection rods, wherein the ejection rods are arranged on the bottom plate at intervals, the ejection rods correspond to the glue grooves on the mold one by one, the side length of the ejection rods is smaller than the side length of the glue groove, and the difference between the side lengths is 0.5-1.5 mm.

[0009] Optionally, a cutting edge is provided on the side wall of the ejection rod facing away from the bottom plate, and the cutting edge is circumferentially arranged on the side wall of the ejection rod facing away from the bottom plate, and one end of the cutting edge facing away from the ejection rod is a cutting edge.

[0010] Optionally, the cross-section of the cutting blade is triangular and the inclination angle of the cutting blade is 55-65°.

[0011] Optionally, the cutting blade includes a blade bottom and a blade edge, the blade bottom is fixedly connected to the ejection rod, the blade edge is located at the end of the blade bottom away from the ejection rod, the cross-sectional inclination angle of the blade bottom is 55~65°, and the inclination angle of the blade edge is 75~85°.

[0012] Optionally, the height of the cutting blade is 1-3 mm, and the ratio of the height of the blade tip to the height of the cutting blade is 0.3-0.4.

[0013] Optionally, a push block is provided on the side wall of the ejection rod facing away from the bottom plate, and the height of the push block is smaller than the height of the cutting blade.

[0014] Optionally, the difference between the height of the push block and the height of the cutting blade is 0.5-1 mm.

[0015] Optionally, the push block is in a step-like shape, and the side length of the push block at one end away from the ejection rod is smaller than the side length of the push block at one end close to the ejection rod.

[0016] Optionally, the bottom angle of the cross section of the push block is 55-65°.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] The demoulding device of the present application fixes a plurality of ejection rod structures corresponding to the rubber grooves on the mold on the bottom plate, and specifically sets the variation length of the ejection rod to be smaller than the side length of the rubber groove and controls the difference between the variation lengths to be 0.5-1.5 mm. Firstly, it can ensure that the plurality of ejection rods can synchronously eject the rubber blocks in the plurality of rubber grooves to reduce the possibility of the rubber blocks being separated from the steel wires. In addition, the side length of the ejection rod is controlled to be appropriately smaller than the side length of the rubber groove, which can ensure that the rubber blocks are easy to eject and reduce the possibility of the ejection rods getting stuck in the rubber groove.

[0019] By further providing a cutting blade structure at the end of the ejection rod, a local tangential force can be applied to the connection between the rubber block and the inner wall of the rubber groove to help the rubber block to separate from the inner wall of the rubber groove;

[0020] By further configuring the cutting blade to include a blade bottom and a blade edge, and controlling the inclination angle of the blade edge to be greater than the inclination angle of the blade bottom, the blade edge can provide a greater local tangential force to better facilitate the rubber block to separate from the inner wall of the rubber groove;

[0021] By further arranging a push block at the end of the ejection rod and specifically controlling the height of the push block to be slightly smaller than the height of the cutting blade, the cutting blade can provide a local tangential force to cause the rubber block to separate from the inner wall of the rubber groove. Subsequently, the push block structure can more stably push the rubber block out of the rubber groove by contacting the rubber block over a large area. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 It is a cross-sectional view of the ejection rod of Example 1 of the present application.

[0024] Figure 3 It is a cross-sectional view of the ejection rod of Example 2 of the present application.

[0025] Explanation of the reference numerals: 1. bottom plate; 2. ejection rod; 3. cutting blade; 31. blade bottom; 32. blade tip; 4. push block. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail. Example

[0027] Reference Figure 1 and Figure 2 A resin bonding steel wire shearing spline demoulding device comprises a bottom plate 1 and a plurality of ejection rods 2. The plurality of ejection rods 2 are arranged on the bottom plate 1 at intervals. The plurality of ejection rods 2 correspond to the glue grooves on the mold one by one. The side length of the ejection rods 2 is smaller than the side length of the glue groove and the difference between the two side lengths is 0.5-1.5 mm. In this embodiment, the difference between the two is 1 mm.

[0028] A cutting blade 3 is provided on the side wall of the ejection rod 2 facing away from the bottom plate 1. The cutting blade 3 is circumferentially arranged on the side wall of the ejection rod 2 facing away from the bottom plate 1. The end of the cutting blade 3 facing away from the ejection rod 2 is a cutting edge. The cross-section of the cutting blade 3 is triangular and the inclination angle of the cutting blade 3 is 55~65°. In this embodiment, the cross-sectional inclination angle of the cutting blade 3 is 60°.

[0029] A push block 4 is provided on the side wall of the ejection rod 2 away from the bottom plate 1. The push block 4 is located in the space surrounded by the cutting blade 3. The push block 4 is terraced and the side length of the push block 4 away from the ejection rod 2 is smaller than the side length of the push block 4 close to the ejection rod 2. The lower bottom angle of the cross section of the push block 4 is 55-65°. In this embodiment, the lower bottom angle of the cross section of the push block 4 is 60°. The height of the push block 4 is smaller than the height of the cutting blade 3, and the difference between the height of the push block 4 and the height of the cutting blade 3 is 0.5-1 mm. In this embodiment, the difference between the heights of the two is 0.8 mm. Example

[0030] Reference Figure 3 The difference between this embodiment and the first embodiment is that the cutting blade 3 includes a blade bottom 31 and a blade edge 32, the blade bottom 31 is fixedly connected to the ejection rod 2, the blade edge 32 is located at the end of the blade bottom 31 away from the ejection rod 2, the cross-sectional inclination angle of the blade bottom 31 is 55-65°, and the inclination angle of the blade edge 32 is 75-85°. In this embodiment, the cross-sectional inclination angle of the blade bottom 31 is 60°, and the inclination angle of the blade edge 32 is 80°. The height of the cutting blade 3 is 1-3 mm, and the ratio of the height of the blade edge 32 to the height of the cutting blade 3 is 0.3-0.4. In this embodiment, the height of the cutting blade 3 is 2 mm and the ratio of the height of the blade edge to the height of the cutting blade 3 is 0.35.

[0031] 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 resin bonding steel wire shearing strip demoulding device, characterized in that: The mold comprises a bottom plate (1) and a plurality of ejection rods (2). The plurality of ejection rods (2) are arranged at intervals on the bottom plate (1). The plurality of ejection rods (2) correspond to the glue grooves on the mold one by one. The side length of the ejection rods (2) is smaller than the side length of the glue groove, and the difference between the side lengths is 0.5-1.5 mm.

2. The resin bonding steel wire shearing strip demoulding device according to claim 1, characterized in that: A cutting blade (3) is provided on the side wall of the ejection rod (2) facing away from the bottom plate (1); the cutting blade (3) is circumferentially arranged on the side wall of the ejection rod (2) facing away from the bottom plate (1); and one end of the cutting blade (3) facing away from the ejection rod (2) is a cutting edge.

3. The resin bonding wire shearing strip demoulding device according to claim 2, characterized in that: The cross section of the cutting edge (3) is triangular and the inclination angle of the cutting edge (3) is 55-65°.

4. The resin bonding steel wire shearing strip demoulding device according to claim 2, characterized in that: The cutting blade (3) comprises a blade bottom (31) and a blade edge (32); the blade bottom (31) is fixedly connected to the ejection rod (2); the blade edge (32) is located at an end of the blade bottom (31) facing away from the ejection rod (2); the cross-sectional inclination angle of the blade bottom (31) is 55-65°, and the inclination angle of the blade edge (32) is 75-85°.

5. The device for stripping the bonding resin steel wire shearing strip according to claim 4, characterized in that: The height of the cutting blade (3) is 1 to 3 mm, and the ratio of the height of the blade edge (32) to the height of the cutting blade (3) is 0.3 to 0.

4.

6. A resin bonding steel wire shearing strip demoulding device according to any one of claims 2 to 5, characterized in that: A push block (4) is provided on the side wall of the ejection rod (2) facing away from the bottom plate (1), and the height of the push block (4) is smaller than the height of the cutting blade (3).

7. The device for stripping steel wire shearing with resin bonding according to claim 6, characterized in that: The difference between the height of the push block (4) and the height of the cutting blade (3) is 0.5-1 mm.

8. The resin bonding wire shearing strip demoulding device according to claim 6, characterized in that: The push block (4) is in the shape of a step, and the side length of the end of the push block (4) away from the push rod (2) is smaller than the side length of the end of the push block (4) close to the push rod (2).

9. The adhesive resin steel wire shearing strip demoulding device according to claim 8, characterized in that: The cross-sectional bottom angle of the push block (4) is 55-65°.

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