Novel demolding force testing mold

Abstract

The utility model provides a novel demolding force testing mold, and relates to the technical field of demolding force testing molds. Comprising a cover plate, a forming part and a base plate, the forming part is located between the cover plate and the base plate to form a sandwich-like three-layer structure, a cylindrical hole is formed in the middle area of the forming part, and the surface roughness of the inner side wall of the cylindrical hole is kept consistent. Due to the adoption of the technical scheme, a test mold is simplified, a rubber damping product with a columnar structure is directly prepared by the columnar hole, and the mold is subjected to surface treatment, so that the surface roughness is controlled within a reasonable range, the consistency of experimental test data and field test data is improved, and the test efficiency is improved. And the detection result has strong guidance on actual production.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding force testing molds, in particular to a demoulding force testing mold. Background Art

[0002] Rubber shock-absorbing products have the problem of difficulty in demoulding during processing, so demoulding force is one of the properties that need to be focused on. Rubber shock-absorbing products are mostly columnar structures, and the existing demoulding force testing devices have complex structures and poor adaptability. In addition, there are no specific indicators for the surface state of the mold in the existing demoulding force test, and the test results have little guidance for actual production. Utility Model Content

[0003] The utility model provides a demoulding force testing mold to solve the above technical problems.

[0004] The specific technical solution is a demoulding force test mold, including: a cover plate, a forming part and a pad. The forming part is located between the cover plate and the pad to construct a three-layer structure similar to a "sandwich". A cylindrical hole is provided in the middle area of ​​the cylindrical hole, and the surface roughness of the inner wall of the cylindrical hole remains consistent.

[0005] Preferably, there are a plurality of cylindrical holes, and the plurality of cylindrical holes are evenly distributed in the middle area of ​​the forming portion, and the surface roughness of the inner side walls of all the cylindrical holes is consistent.

[0006] Preferably, an exhaust groove is provided at the bottom of the cover plate.

[0007] Preferably, it further comprises: a positioning pin, and holes for installing the positioning pin are respectively opened in the four corner areas of the cover plate, the forming part and the backing plate.

[0008] Preferably, the lengths and widths of the cover plate, the forming portion and the backing plate are respectively the same, the thicknesses of the cover plate and the backing plate are also the same, and the thickness of the forming portion is an integer multiple of the thickness of the backing plate.

[0009] Preferably, handles are provided on opposite sides of the cover plate, the profiled portion and the backing plate.

[0010] Preferably, positioning columns are respectively provided at the four corners of the backing plate, and holes for fitting the positioning columns are respectively opened at the four corners of the cover plate and the forming portion.

[0011] Due to the adoption of the above technical scheme, the utility model simplifies the test mold, and the cylindrical holes directly prepare rubber shock-absorbing products with a columnar structure, and the mold is surface treated to control the surface roughness within a reasonable range, thereby improving the consistency of experimental test data and on-site test data, and the test results have strong guidance for actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 This is an exploded view of the utility model.

[0015] Figure 3 This is a schematic diagram of the pad in Example 3.

[0016] Figure 4 This is a schematic diagram of the mold structure for testing the demoulding force in Example 4.

[0017] in:

[0018] 1. Cover plate, 2. Forming part, 3. Backing plate, 4. Positioning pin,

[0019] 101, exhaust slot, 102, upper positioning hole, 103, upper handle,

[0020] 201, cylindrical hole, 202, middle positioning hole, 203, middle handle,

[0021] 301. Lower positioning hole, 302. Lower handle, 303. Positioning column. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0023] Combination Figure 1-2 It is understood that the demoulding force test mold includes: a cover plate 1, a molding part 2 and a pad plate 3. The molding part 2 is located between the cover plate 1 and the pad plate 3 to construct a three-layer structure similar to a "sandwich". A cylindrical hole 201 is provided in the middle area of ​​the molding part 2, and the surface roughness of the inner wall of the cylindrical hole 201 remains consistent.

[0024] When in use, the pad 3 is placed on a flat table, and a release agent is sprayed or wiped on the inner surface of the cylindrical hole 201, and solidified into a film under certain conditions. The molding part 2 is placed on the top of the pad 3, and an appropriate amount of raw materials are weighed and placed in the cylindrical hole 201. The cover plate 1 is placed on the top of the molding part 2 to close the mold, and the entire test mold is placed in a flat vulcanizer, and operated according to the set heating time, temperature and pressure. After naturally cooling to room temperature, the cover plate 1 is removed, the molding part 2 is taken out, and the demolding force of the molded sample is tested with a push-pull meter, and multiple groups of data are recorded and the average value is calculated. The test mold is simplified, and the cylindrical hole 201 directly prepares a rubber shock-absorbing product with a columnar structure, and the mold is surface treated to control the surface roughness within a reasonable range, improve the consistency of the experimental test data and the field test data, and the test results have strong guidance for actual production.

[0025] In one embodiment, in combination Figure 2 It is understood that there are multiple cylindrical holes 201, and the multiple cylindrical holes 201 are evenly distributed in the middle area of ​​the forming part 2, and the surface roughness of the inner side walls of all cylindrical holes 201 is consistent. In this way, multiple samples can be made at one time, and then the demoulding force test can be carried out separately, which makes the test sample preparation convenient and fast, and realizes efficient detection.

[0026] In one embodiment, in combination Figure 1 , 2 As shown in Figure 4, a venting groove 101 is provided at the bottom of the cover plate 1. The venting groove 101 is conducive to exhaust, which is conducive to the filling and molding of the raw materials. It can be directly removed after the mold is opened, which is conducive to maintaining the consistency of the sample.

[0027] In one embodiment, in combination Figure 2 It is understood that it also includes: positioning pins 4, and the four corners of the cover plate 1, the forming part 2 and the backing plate 3 are respectively provided with holes for installing the positioning pins 4. Such a setting can position and fix, and the operation is safer.

[0028] In one embodiment, the lengths and widths of the cover plate 1, the forming portion 2 and the pad 3 are respectively the same for easy stacking. The thicknesses of the cover plate 1 and the pad 3 are also the same. The thickness of the forming portion 2 is an integer multiple of the thickness of the pad 3. The heat transfer from top to bottom is consistent and the product quality is uniform.

[0029] In one embodiment, in combination Figure 4 It is understood that the cover plate 1, the forming portion 2 and the opposite sides of the backing plate 3 are provided with handles for easy taking.

[0030] In one embodiment, in combination Figure 3 It is understood that the four corners of the backing plate 3 are respectively provided with positioning posts 303, and the four corners of the cover plate 1 and the forming part 2 are respectively provided with holes for fitting the positioning posts 303. This is another fixing method, which can avoid the process of taking and placing the positioning pins 4 during operation, and is more convenient.

[0031] Example 1: Combination Figure 1-2 It is understood that the demoulding force test mold has a three-layer structure similar to a "sandwich". The molding part 2 is located between the cover plate 1 and the backing plate 3. The bottom of the cover plate 1 is provided with an exhaust groove 101. The middle area of ​​the molding part 2 is provided with a cylindrical hole 201. The surface roughness of the inner wall of the cylindrical hole 201 remains consistent. The surface roughness of the inner wall can refer to the surface roughness requirements of the inner wall of the mold used in the production and processing of products. The heating and pressurization of the raw materials are completed by the flat vulcanizer, and the demoulding force size test is completed by the push-pull meter.

[0032] Embodiment 2: On the basis of Embodiment 1, it further includes: a positioning pin 4, the four corner areas of the cover plate 1 are respectively provided with upper positioning holes 102 which pass through from top to bottom, the four corner areas of the forming portion 2 are respectively provided with middle positioning holes 202 which pass through from top to bottom, and the four corner areas of the pad plate 3 are respectively provided with groove-shaped lower positioning holes 301, and the height of the positioning pin 4 is greater than the sum of the hole depths of the lower positioning hole 301 and the middle positioning hole 202, and is less than the sum of the hole depths of the lower positioning hole 301, the middle positioning hole 202 and the upper positioning hole 102.

[0033] Embodiment 3: The structure is different from that of embodiment 2, and the Figure 2-3 It is understood that the middle area of ​​the forming part 2 is provided with 9 cylindrical holes 201, which are evenly distributed in the middle area of ​​the forming part 2, and the inner wall surface roughness of all cylindrical holes 201 is kept consistent; the four corner areas of the pad 3 are respectively provided with positioning columns 303, and the four corner areas of the cover plate 1 and the forming part 2 are respectively provided with through holes for fitting the positioning columns 303, and the height of the positioning columns 303 is less than the sum of the thicknesses of the cover plate 1 and the forming part 2. The process of taking and placing the positioning pin 4 can be avoided during operation, which is more convenient.

[0034] Example 4: Based on Examples 1-3, combined Figure 4 The length and width of the cover plate 1, the forming part 2 and the backing plate 3 are the same, which is convenient for stacking. The thickness of the cover plate 1 and the backing plate 3 is also the same. The thickness of the forming part 2 is an integer multiple of the thickness of the backing plate 3. The heat transfer from top to bottom is consistent, and the product quality is uniform. An upper handle 103 is provided on the side of the cover plate 1, a middle handle 203 is provided on the side of the forming part 2, and a lower handle 302 is provided on the side of the backing plate 3 for easy picking.

[0035] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A new demoulding force test mold, characterized in that: include: The cover plate (1), the forming part (2) and the backing plate (3), wherein the forming part (2) is located between the cover plate (1) and the backing plate (3) to form a three-layer structure similar to a "sandwich", and a cylindrical hole (201) is provided in the middle area of ​​the forming part (2), and the surface roughness of the inner wall of the cylindrical hole (201) is kept consistent.

2. The demoulding force testing mold according to claim 1, characterized in that: There are a plurality of cylindrical holes (201), the plurality of cylindrical holes (201) are evenly distributed in the middle area of ​​the forming portion (2), and the surface roughness of the inner side walls of all the cylindrical holes (201) is consistent.

3. The demoulding force testing mold according to claim 1, characterized in that: An exhaust groove (101) is formed at the bottom of the cover plate (1).

4. The demoulding force testing mold according to any one of claims 1 to 3, characterized in that: Also includes: The positioning pin (4) and the four corners of the cover plate (1), the forming portion (2) and the backing plate (3) are respectively provided with holes for installing the positioning pin (4).

5. The demoulding force testing mold according to claim 4, characterized in that: The length and width of the cover plate (1), the forming part (2) and the pad (3) are respectively the same, the thickness of the cover plate (1) and the pad (3) are also the same, and the thickness of the forming part (2) is an integral multiple of the thickness of the pad (3).

6. The demoulding force testing mold according to claim 4, characterized in that: Handles are provided on opposite sides of the cover plate (1), the shaped portion (2) and the backing plate (3).

7. The demoulding force testing mold according to any one of claims 1 to 3, characterized in that: The four corners of the backing plate (3) are respectively provided with positioning columns (303), and the four corners of the cover plate (1) and the forming portion (2) are respectively provided with holes for fitting the positioning columns (303).

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