Uniform stress demolding mechanism for composite material part

Abstract

The utility model discloses a uniform stress demoulding mechanism for composite material parts, which belongs to the technical field of demoulding of the composite material parts and comprises a support bottom plate, a lug is further arranged in the middle of the support bottom plate, a demoulding plate is further connected onto the lug in a swinging manner, and the demoulding plate is connected with the support bottom plate in a swinging manner. A wedge-shaped thin steel sheet is arranged at the front end of the demolding plate, an ejector block is arranged at the rear end of the demolding plate, the ejector block is connected with the supporting bottom plate through an adjusting assembly, and the demolding plate can be prized up and down through the adjusting assembly. According to the demolding mechanism, the demolding distance of the part can be easily controlled, the stress on the demolding surface of the part is uniform and reasonable, the uniform stress demolding of the part can be realized by mounting a plurality of demolding mechanisms on the edge of the part for synchronous use, the applicability is strong, the operation is simple and convenient, and the stability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the demoulding technical field of composite material parts, in particular to a uniform stress demoulding mechanism of composite material parts. BACKGROUND

[0002] The composite material parts produce a certain degree of springback in the forming process due to the characteristics such as resin curing shrinkage, residual stress after curing and the like, so that the cured parts are closely attached to the tool surface, and the parts are difficult to demould. The traditional demoulding method is to pry or knock the wedge-shaped block into the mold and the edge between the parts to realize demoulding. Since the part stress action surface and demoulding distance cannot be guaranteed, the demoulding force of the part is non-uniform when demoulding by using the traditional demoulding method, and the interlaminar shear resistance of the composite material part is poor, so that this demoulding method is easy to cause defects such as delamination of the part, and increase the risk of part rejection. In addition, the traditional demoulding method also has the problem of low efficiency.

[0003] At this time, it is necessary to design a demoulding mechanism which can realize uniform stress of composite material parts and reduce part damage to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects of the prior art, the utility model provides a uniform stress demoulding mechanism of composite material parts.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: a uniform stress demoulding mechanism of composite material parts, comprising a support bottom plate, characterized in that a lug is further arranged at the middle part of the support bottom plate, a demoulding plate can be swing-connected on the lug, the front end of the demoulding plate is a wedge-shaped thin steel sheet, the rear end is a top block, the top block is connected with the support bottom plate through an adjusting assembly, and the demoulding plate can be pried up and down through the adjusting assembly.

[0006] Preferably, lugs are further arranged at the lower part of both sides of the demoulding plate, a first shaft hole is formed in the lug, a second shaft hole is formed in the lug, and a latch is further connected in the first shaft hole and the second shaft hole.

[0007] Preferably, the adjusting assembly comprises a lead screw and a butterfly nut, the lead screw is connected to the support top plate, the lead screw is located at the rear side of the lug, a through hole is formed in the top block for the lead screw to pass through, the butterfly nut is connected to the end of the lead screw, and the butterfly nut abuts against the upper surface of the top block.

[0008] Preferably, a scale disc is further arranged on the top block, and the scale disc is located at the through hole.

[0009] Preferably, the wedge-shaped thin steel sheet is connected with the stripper plate through a connecting long arm, and the top block is connected with the stripper plate through a connecting short arm, and the length of the connecting long arm is 1-99 times of the length of the connecting short arm.

[0010] Preferably, the wedge-shaped thin steel sheet, the connecting long arm, the stripper plate, the lug, the connecting short arm and the top block are of an integrated structure, and the support base plate and the lug and the screw rod are of an integrated structure.

[0011] Preferably, the lug is further provided with a rubber protective layer at the lower surface of the stripper plate, and the rubber protective layer is made of wear-resistant rubber material.

[0012] Preferably, the support base plate and the stripper plate are made of high-rigidity metal steel plate material.

[0013] Preferably, the thickness of the wedge-shaped thin steel sheet is 0-2 mm.

[0014] Compared with the prior art, the utility model can achieve the beneficial effects that:

[0015] 1. The stripper mechanism is placed on the surface of the peripheral mold of the part, and then the support base plate is knocked from back to front, so that the wedge-shaped thin steel sheet is embedded into the same depth in the part excess area, which facilitates embedding the gap between the tooling mold and the part, and realizes uniform stress demolding of the part.

[0016] 2. Then the butterfly nut can be adjusted by manual rotation, and since the size of the through hole is larger than the size of the screw rod, the size of the through hole effectively plays a role of giving way. After the butterfly nut is twisted, the top block can be more stably displaced downward, and the required adjustment distance can be observed according to the scale disc at the butterfly nut, so that the demolding distance of the part can be easily controlled, and the stress range of the part demolding surface is reasonable.

[0017] 3. A certain number of the stripper mechanism can be used synchronously at the edge of the part, that is, the stripper mechanism installed at the part can synchronously adjust the distance, so that the edges of the part are uniformly stressed, the risk of rejection caused by part defects due to traditional demolding methods is reduced, the applicability is strong, the operation is simple, and the stability is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the composite material part uniform stress demolding mechanism.

[0019] Figure 2 It is a structure schematic view of the support base plate in the composite material part uniform stress demolding mechanism.

[0020] Figure 3 It is a structure schematic view of the stripper plate in the composite material part uniform stress demolding mechanism.

[0021] Figure 4 Figure 1 is a schematic diagram of the embodiment of the uniform stress stripping mechanism for the composite part;

[0022] Wherein: 1, support bottom plate; 2, lug; 3, stripping plate; 4, adjusting assembly; 5, split lug; 6, first shaft hole; 7, second shaft hole; 8, pin shaft; 9, screw rod; 10, top block; 11, connecting short arm; 12, through hole; 13, butterfly nut; 14, wedge-shaped thin steel sheet; 15, connecting long arm; 16, dial. DETAILED DESCRIPTION

[0023] The technical scheme of the present application is described below in conjunction with the drawings in the specification Figures 1-3 and specific embodiments.

[0024] Embodiment:

[0025] As shown in Figures Figure 1 , Figure 2 and Figure 3 , the present application provides a uniform stress stripping mechanism for a composite part, comprising a support bottom plate 1, a lug 2 is also provided at the middle part of the support bottom plate 1, a stripping plate 3 can also be swing-connected to the lug 2, the front end of the stripping plate 3 is a wedge-shaped thin steel sheet 14, the rear end is a top block 10, the top block 10 is connected to the support bottom plate 1 through an adjusting assembly 4, and the stripping plate 3 can be pried up and down through the adjusting assembly 4; split lugs 5 are also provided at the lower sides of the stripping plate 3, a first shaft hole 6 is formed in the lug 2, a second shaft hole 7 is formed in the split lug 5, and a latch is also connected in the first shaft hole 6 and the second shaft hole 7; the adjusting assembly 4 comprises a screw rod 9 and a butterfly nut 13, the screw rod 9 is connected to the support top plate, and the screw rod 9 is located at the rear side of the lug 2, a through hole 12 is formed in the top block 10 for the screw rod 9 to pass through, the butterfly nut 13 is connected to the end of the screw rod 9, and the butterfly nut 13 abuts against the upper surface of the top block 10; a dial 16 is also provided on the top block 10, and the dial 16 is located at the through hole 12; the wedge-shaped thin steel sheet 14 is connected to the stripping plate 3 through a connecting long arm 15, the top block 10 is connected to the stripping plate 3 through a connecting short arm 11, and the length of the connecting long arm 15 is 1-99 times the length of the connecting short arm 11; the wedge-shaped thin steel sheet 14, the connecting long arm 15, the stripping plate 3, the split lug 5, the connecting short arm 11, and the top block 10 are of an integral structure, the support bottom plate 1, the lug 2, and the screw rod 9 are of an integral structure; a rubber protective layer is also provided at the lower surface of the lug 2 and the stripping plate 3, the rubber protective layer is made of wear-resistant rubber material; the support bottom plate 1 and the stripping plate 3 are made of high-rigidity metal steel plate material; the thickness of the wedge-shaped thin steel sheet 14 should be 0-2 mm.

[0026] The demolding plate 3 with the integral structure has high strength, and the lower surface of the supporting base is provided with a rubber protection layer, which can prevent slipping and protect the surface of the tool when the demolding process is performed when the utility model is used; after the wedge-shaped thin steel sheet 14 is embedded, the top block 10 at the rear end of the demolding plate 3 is moved downward by rotating the butterfly nut 13, that is, the wedge-shaped thin steel sheet 14 at the front end of the demolding plate 3 is lifted upward; usually, multiple demolding mechanisms are used synchronously when the demolding mechanism is used; the scale disc 16 is arranged at the through hole 12 of the top block 10, so that the amplitude of the rotation of each butterfly nut 13, that is, the number of rotations, the direction of rotation and the distance of rotation are consistent, the operation efficiency is improved, the applicability is strong, the operation is simple, and the stability is high.

[0027] Working steps:

[0028] When the demolding process is performed, according to the part shape size characteristics after solidification is completed, the operator places a certain number of demolding mechanisms on the surface of the mold around the part according to the needs, so that the wedge-shaped thin steel sheet 14 of the demolding mechanism is located at the gap between the mold and the part, and then the rear side of the supporting base plate 1 is knocked from rear to front, so that a certain number of wedge-shaped thin steel sheets 14 are embedded in the same depth in the part excess area.

[0029] Then multiple operators manually rotate the butterfly nut 13 in the tightening direction to move downward along the screw rod 9, and then the top block 10 is pressed to move downward to reduce the distance from the supporting base plate 1; the demolding plate 3 rotates at the same time according to the lever principle, and the wedge-shaped thin steel sheet 14 at the front side moves upward, so that each demolding mechanism is synchronized, that is, each wedge-shaped thin steel sheet 14 moves upward uniformly and synchronously; the number of rotations of the butterfly nut 13 can be ensured to be the same by visually observing the scale disc 16, the distance of upward movement of each wedge-shaped thin steel sheet 14 is equal, that is, the demolding distance remains the same, so that the uniform force demolding purpose of the utility model is realized.

[0030] If larger or smaller parts need to be demolded, the size of the demolding mechanism is selected according to the required size; for large size parts, a wedge-shaped thin steel sheet 14 with large size is selected, and vice versa; if the embedded part is of a special shape, the wedge-shaped thin steel sheet 14 at the front end of the demolding mechanism can be made into a shape matching the special embedded part, so that the demolding mechanism can adapt to parts of various specifications and sizes, has a wide range of adaptability, is simple to operate and has high stability.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A composite part uniform force ejection mechanism comprising a support platen, characterized by, The support bottom plate is further provided with a lug at the middle part, and a demolding plate is swingably connected to the lug.

2. The uniform stress release mechanism for composite parts of claim 1, wherein: The lug is provided with a first shaft hole, and the lug is provided with a second shaft hole.

3. The uniform stress release mechanism for composite parts of claim 2, wherein: The adjusting assembly comprises a screw rod and a butterfly nut.

4. The uniform stress release mechanism for composite parts of claim 3, wherein: The screw rod is connected to the support top plate and located at the rear side of the lug.

5. The uniform stress ejection mechanism for composite parts of claim 1, wherein: The top block is provided with a through hole for the screw rod.

6. The uniform stress release mechanism for composite parts of claim 3, wherein: The top block is further provided with a scale disc at the through hole.

7. The uniform stress release mechanism for composite parts of claim 3, wherein: The wedge-shaped thin steel sheet is connected to the demolding plate through a long connecting arm.

8. The uniform stress release mechanism for composite parts of claim 1, wherein: The wedge-shaped thin steel sheet, the long connecting arm, the demolding plate, the lug, the short connecting arm and the top block are integrated structures.

9. The uniform stress release mechanism for composite parts of claim 1, wherein: The lug and the lower surface of the demolding plate are further provided with a rubber protective layer made of wear-resistant rubber material. The support bottom plate and the demolding plate are made of high-rigidity metal steel plate material. The thickness of the wedge-shaped thin steel sheet is 0-2mm.

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