Carbon cloth lining press mold for flexible grinding wheel

Abstract

The utility model discloses a kind of carbon cloth lining body pressing mould for flexible grinding wheel, including mould ring, detachable bottom plate, upper pressing plate, cushion block;The detachable bottom plate includes multiple square bottom plates;The square bottom plate is boss structure;The height of the cushion block is consistent with the height of the convex part of square bottom plate;The mould ring is located detachable bottom plate, inner wall and the side wall contact of the convex part of square bottom plate;The cushion block is located between two adjacent square bottom plates;The upper pressing plate is inverted boss structure, located mould ring;The side wall of the convex part of the upper pressing plate and the inner wall contact of mould ring. The utility model structure is simple, and practicality is strong, solve the uneven distribution of resin in the prior art and lead to the problem that carbon cloth lining body obtained by pressing appears warping, by setting separation bottom plate, cooperate with cushion block, improve the evenness of glue flow, carbon cloth lining body form obtained by pressing is good, effectively ensure processing precision and use safety.

Description

Technical Field

[0001] This utility model relates to the field of flexible grinding wheel technology, and in particular to a carbon cloth liner pressing mold for flexible grinding wheels. Background Technology

[0002] Flexible grinding wheels, as a highly efficient grinding tool, are widely used in the surface treatment of composite materials such as metals and ceramics. Their performance hinges on the internal reinforcing liner, and carbon fiber cloth, due to its extremely high strength, excellent flexibility, and fatigue resistance, has become an ideal material for manufacturing high-performance flexible grinding wheel liners.

[0003] Current production methods employ a traditional flat-plate mold structure to press carbon fiber liners. This involves using one flat plate as a base and another as a pressing plate, placing the carbon fiber prepreg between them, and then curing it using a conventional hot press. However, this traditional flat-plate pressing method has certain technical drawbacks, especially for pressing liners with large planar dimensions. During the pressing process, the resin flows from all sides. Due to the chemical shrinkage of the resin during curing and the thermal shrinkage during cooling, the uneven resin layer thickness between the center and the edges leads to uneven shrinkage stress, causing the formed carbon fiber liner to warp and deform. This warped liner is detrimental to subsequent grinding and processing, and when made into a flexible grinding wheel, it affects the dynamic balance performance.

[0004] Therefore, in response to the above problems and technical requirements, it is necessary to develop a new mold structure that can ensure uniform resin distribution and thus effectively suppress the warping deformation of the carbon cloth liner. Summary of the Invention

[0005] The purpose of this invention is to provide a carbon cloth liner pressing mold for flexible grinding wheels. It has a simple structure and strong practicality. It solves the problem of uneven resin distribution in the prior art, which causes the pressed carbon cloth liner to warp. By setting a separation base plate and cooperating with the pad block, the uniformity of resin flow is improved, and the pressed carbon cloth liner has a good shape, which effectively ensures the processing accuracy and safety of use.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A flexible grinding wheel carbon cloth liner pressing mold includes a mold ring, a split base plate, an upper pressure plate, and a pad block. The split base plate includes multiple square base plates, each with a boss structure. The height of the pad block is the same as the height of the protruding portion of the square base plate. The mold ring is located on the split base plate, with its inner wall contacting the side wall of the protruding portion of the square base plate. The pad block is located between two adjacent square base plates. The upper pressure plate has an inverted boss structure and is located on the mold ring. The side wall of the protruding portion of the upper pressure plate contacts the inner wall of the mold ring.

[0007] In this invention, by setting a separate base plate composed of multiple square base plates, which cooperates with the pad block, multiple glue flow channels are formed in the mold cavity. This solves the problem in the prior art that the resin glue can only flow to the surrounding area, resulting in uneven resin distribution. This avoids warping of the cured carbon cloth liner and ensures the quality of the pressed product.

[0008] Furthermore, the pad is located on the stepped structure of two adjacent square base plates. Even further, the outer wall of the pad contacts the side walls of the protruding portions of the corresponding two square base plates and the inner wall of the mold ring.

[0009] In this invention, the shape and size of the pad are not specifically limited, as long as it can fill the gap between two adjacent square base plates, which will not affect the understanding of this invention by those skilled in the art.

[0010] Furthermore, the detachable base plate comprises 2 to 8 square base plates. Even further, the detachable base plate comprises 2 to 4 square base plates.

[0011] Preferably, the mold ring is provided with vent holes to discharge gas from the mold and prevent defects in the pressed product. In actual production, the shape and size of the vent holes are designed according to needs and do not affect the understanding of this invention by those skilled in the art.

[0012] In this invention, a gap of 15~30µm is provided between adjacent contacting parts, which does not affect the realization of the technical effect of this invention.

[0013] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows: This utility model creatively designs the traditional integral base plate into a separate base plate composed of multiple square base plates, and sets pads between adjacent square base plates, so that multiple glue flow channels are formed in the membrane cavity. This solves the problem in the prior art that the resin glue can only flow to the surrounding area, resulting in uneven resin distribution and thus causing warping of the cured carbon cloth liner. The carbon cloth liner product prepared using the mold of this utility model has a good shape, effectively ensuring processing accuracy and safety of use. In addition, the separate base plate structure also facilitates demolding. The structure is simple, practical, and has broad application prospects and promotion value. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the carbon cloth liner pressing mold for the flexible grinding wheel in Example 1.

[0015] Figure 2 This is a schematic diagram of the unassembled upper pressure plate structure.

[0016] Figure 3 yes Figure 2 The second type of state diagram.

[0017] Figure 4 This is an exploded view of the carbon cloth liner pressing mold for the flexible grinding wheel in Example 1.

[0018] Among them: mold ring 1, split base plate 2, upper pressure plate 3, pad block 4, vent hole 101, square base plate 201. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments. The specific components involved are existing products, and the connection and usage methods between the specific components are conventional technologies.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention. Example 1

[0021] like Figures 1 to 4 As shown: A flexible grinding wheel carbon cloth liner pressing mold includes a mold ring 1, a split base plate 2, an upper pressure plate 3, and a pad block 4. The split base plate includes four square base plates 201. The square base plates have a boss structure. The height of the pad block is the same as the height of the protruding part of the square base plate. The mold ring is located on the split base plate, and its inner wall contacts the side wall of the protruding part of the square base plate. The pad block is located between two adjacent square base plates, specifically on the stepped structure of the two adjacent square base plates. The outer wall of the pad block contacts the side wall of the protruding part of the corresponding two square base plates and the inner wall of the mold ring. The upper pressure plate has an inverted boss structure and is located on the mold ring. The side wall of the protruding part of the upper pressure plate contacts the inner wall of the mold ring.

[0022] In this embodiment, the mold ring is provided with an exhaust hole 101.

[0023] In this embodiment, a 20µm gap is provided between adjacent contacting components, which does not affect the realization of the technical effect of this utility model.

[0024] The method of using the carbon cloth liner pressing mold for the flexible grinding wheel of this utility model is as follows: according to Figure 2 The assembly device shown has only the upper pressure plate left unassembled. The carbon fiber prepreg is placed into the membrane cavity, and then the lower and upper pressure plates are placed in. It is then heat-cured using a conventional hot press, and then cooled and demolded naturally to obtain the carbon cloth lining product. Example 2

[0025] Based on Embodiment 1, the difference in this embodiment is that the split base plate includes two square base plates, while the rest are the same. Comparative Example

[0026] Based on Example 1, the difference in this comparative example is that the pad blocks are omitted and the separate base plate (4 square base plates) is adjusted into a single structure, while the rest are the same.

[0027] Application Examples

[0028] Referring to the mold usage method in Example 1, carbon cloth liner products were prepared using the molds from Example 1 and the comparative example, respectively.

[0029] The two carbon cloth substrates prepared were placed on a smooth glass. The carbon cloth substrate prepared using Example 1 had a good shape and no warping was observed by the naked eye. However, the carbon cloth substrate prepared using the comparative example showed warping by the naked eye, and the maximum warping height was measured to be nearly 1 mm.

[0030] This invention creatively transforms the traditional integral base plate into a separate base plate composed of multiple square base plates, with pads placed between adjacent square base plates. This creates multiple resin flow channels within the membrane cavity, solving the problem in existing technologies where the resin can only flow outwards, leading to uneven resin distribution and warping of the cured carbon cloth liner. The carbon cloth liner product prepared using the mold of this invention has a good shape, effectively ensuring processing accuracy and safety in use. Furthermore, the separate base plate structure facilitates demolding, has a simple structure, strong practicality, and broad application prospects and promotional value.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered to fall within the protection scope of the present utility model.

Claims

1. A carbon cloth liner pressing mold for flexible grinding wheels, characterized in that: The system includes a mold ring, a separable base plate, an upper pressure plate, and a pad. The separable base plate comprises multiple square base plates, each with a boss structure. The height of the pad is the same as the height of the protruding portion of the square base plate. The mold ring is located on the separable base plate, with its inner wall contacting the side wall of the protruding portion of the square base plate. The pad is located between two adjacent square base plates. The upper pressure plate has an inverted boss structure and is located on the mold ring. The side wall of the protruding portion of the upper pressure plate contacts the inner wall of the mold ring.

2. The carbon cloth liner pressing mold for flexible grinding wheels according to claim 1, characterized in that: The pad is located on the stepped structure of two adjacent square base plates.

3. The carbon cloth liner pressing mold for flexible grinding wheels according to claim 2, characterized in that: The outer wall of the pad contacts the side walls of the protruding portions of the two corresponding square base plates and the inner wall of the mold ring.

4. The carbon cloth liner pressing mold for flexible grinding wheels according to claim 1, characterized in that: The split base plate includes 2 to 8 square base plates.

5. The carbon cloth liner pressing mold for flexible grinding wheels according to claim 1, characterized in that: The mold ring is provided with vent holes.

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