Mould structure of square corrugated pipe rubber product

Abstract

The invention discloses a mold structure of a square corrugated pipe rubber product. The mold structure comprises a middle mold outer frame; and a forming space for compression molding of the square corrugated pipe is formed between the middle mold inner frame and the middle mold outer frame, and the middle mold inner frame is of a sectional structure. The front-side inner frame mold and the rear-side inner frame mold are of a sectional type, when the middle mold inner frame is detached and taken out, the middle section of the front-side inner frame mold and the middle section of the rear-side inner frame mold are partially detached and taken out, the adsorption force is small, and after the middle section of the front-side inner frame mold and the middle section of the rear-side inner frame mold are detached, the exposed square corrugated pipe can obtain an elastic deformation release space; the problem that the middle mold inner frame on any surface of the whole plate structure is easily torn, damaged and deformed during demolding due to forced separation from the square corrugated pipe is solved.

Description

Technical Field

[0001] The invention relates to a mold structure for a square bellows rubber product, belonging to the technical field of rubber product molding molds. Background Art

[0002] When the square bellows is molded by compression molding with rubber as raw material, the square bellows is in a square shape. Figure 5 As shown; therefore, a square space needs to be constructed through the middle mold inner frame and the middle mold outer frame.

[0003] Existing mold structure such as Figure 4 As shown, the four-sided middle mold inner frame 2 and the four-sided middle mold outer frame 3 are all whole plate structures. After the upper mold is removed, when the middle mold inner frame 2 is taken out from the lower mold 1, the adsorption force is relatively large when the middle mold inner frame 2 on any side of the four-sided whole plate structure is separated from the square corrugated tube 5. Forced separation can easily lead to tearing, damage and deformation of the square corrugated tube 5 when it is demolded. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a mold structure for a square bellows rubber product.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a mold structure for a square bellows rubber product, comprising:

[0007] Middle mold frame;

[0008] The middle mold inner frame and the middle mold outer frame form a molding space for compression molding of the square bellows, and the middle mold inner frame has a segmented structure.

[0009] It also includes a lower mold that provides an installation base. The middle mold outer frame is composed of four pieces that are correspondingly installed on the top of the lower mold. The ends of the middle mold outer frame are in close contact with each other. The top of the lower mold located on the inner side of the middle mold outer frame is installed with a middle mold inner frame. A molding space is formed between the middle mold inner frame and the middle mold outer frame for compression molding of the square corrugated pipe.

[0010] The middle mold inner frame includes an integral left inner frame mold and a right inner frame mold; and a segmented front inner frame mold and a rear inner frame mold, and the front inner frame mold and the rear inner frame mold are both divided into three sections.

[0011] The left inner frame mold, the right inner frame mold, the front inner frame mold and the rear inner frame mold are marked with numbers. The left inner frame mold, the right inner frame mold, the front inner frame mold and the rear inner frame mold are fixed with demoulding handles.

[0012] The interior of the middle mold inner frame is supported by a cross-shaped top rod assembly; the cross-shaped top rod assembly includes one transverse top and two longitudinal tops, the two longitudinal tops are distributed at intervals and intersect perpendicularly with the transverse top, and the longitudinal top and the transverse top are fixedly connected at the intersection.

[0013] The two ends of the horizontal top support the left inner frame mold and the right inner frame mold, the longitudinal top supports the intersection of the front inner frame mold and the rear inner frame mold segments, and the longitudinal top is supported by the inclined surfaces of the front inner frame mold and the rear inner frame mold; a bottom top is fixed below the longitudinal top by screws, and the bottom top is directly supported by the intersection of the front inner frame mold and the rear inner frame mold segments.

[0014] It also includes an upper mold, which is installed with the middle mold outer frame, and the bottom surface of the upper mold is pressed on the longitudinal top and the transverse top end.

[0015] The upper mold and the lower mold are provided with mold seats on their lateral sides.

[0016] The beneficial effects of the present invention are as follows: the front inner frame mold and the rear inner frame mold are segmented, and when the middle mold inner frame is disassembled and taken out, the middle section of the front inner frame mold and the middle section of the rear inner frame mold are partially disassembled and taken out with a smaller adsorption force. After the middle section of the front inner frame mold and the middle section of the rear inner frame mold are disassembled, the exposed square corrugated tube can obtain elastic deformation release space, which solves the problem that the forced separation of the middle mold inner frame and the square corrugated tube on any side of the whole plate structure is easy to cause tearing, damage and deformation during demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the present invention when the upper mold is not installed;

[0019] Figure 3 It is a structural schematic diagram of the cross-shaped push rod assembly of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the prior art mold when the upper mold is not installed;

[0021] Figure 5 It is a schematic diagram of the structure of a square bellows;

[0022] In the figure: 1-lower mold; 2-middle mold inner frame; 21-left inner frame mold; 22-right inner frame mold; 23-front inner frame mold; 24-rear inner frame mold; 25-mold demoulding handle; 3-middle mold outer frame; 4-upper mold; 5-square bellows; 6-cross-shaped ejector rod assembly; 61-lateral ejector; 62-longitudinal ejector; 63-bottom ejector; 7-digital mark; 8-mold clamping base. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0024] like Figures 1 to 3 shown.

[0025] A mold structure of a square bellows rubber product of the present application includes:

[0026] A lower die 1 is provided for providing a mounting base;

[0027] The middle mold outer frame 3 is detachably mounted on the four sides of the top of the lower mold 1 through pins. The middle mold outer frame 3 consists of four pieces correspondingly mounted on the top of the lower mold 1, and the ends of the middle mold outer frame 3 are in close contact with each other.

[0028] The top of the lower mold 1 located inside the middle mold outer frame 3 is installed with a middle mold inner frame 2, and a molding space is formed between the middle mold inner frame 2 and the middle mold outer frame 3 for compression molding of the square bellows 5; the middle mold inner frame 2 includes an integral left inner frame mold 21 and a right inner frame mold 22; and a segmented front inner frame mold 23 and a rear inner frame mold 24, and the front inner frame mold 23 and the rear inner frame mold 24 are both divided into three sections. The left inner frame mold 21, the right inner frame mold 22, the front inner frame mold 23, and the rear inner frame mold 24 are provided with digital marks 7 for easy corresponding identification. The left inner frame mold 21, the right inner frame mold 22, the front inner frame mold 23, and the rear inner frame mold 24 are fixed with demoulding handles 25 for demoulding force.

[0029] The inner frame 2 of the middle mold is supported by a cross-shaped top rod assembly 6, which includes one transverse top 61 and two longitudinal tops 62. The two longitudinal tops 62 are spaced and perpendicularly intersected with the transverse top 61. The intersection of the longitudinal top 62 and the transverse top 61 is fixedly connected by screws; the two ends of the transverse top 61 support the left inner frame mold 21 and the right inner frame mold 22, the longitudinal top 62 supports the intersection of the front inner frame mold 23 and the rear inner frame mold 24, and the longitudinal top 62 supports the front inner frame mold 23 and the rear inner frame mold 24 on the inclined surface; the bottom of the longitudinal top 62 is fixed by screws, and the bottom top 63 directly supports the intersection of the front inner frame mold 23 and the rear inner frame mold 24. The bottom surface of the bottom top 63 contacts the lower mold 1 to obtain a limit to prevent it from falling off downward.

[0030] It also includes an upper mold 4, which is detachably mounted on the four panels of the middle mold outer frame 3 through pins, and the bottom surface of the upper mold 4 is pressed on the ends of the longitudinal top 62 and the transverse top 61.

[0031] The upper mold 4 and the lower mold 1 are fixed with a mold base 8 on their lateral sides by screws. Bolts can be installed on the mold base 8 and then screwed into nuts to achieve pulling between the upper mold 4 and the lower mold 1 when the mold is closed, thereby ensuring the stability of the mold closing.

[0032] After the square bellows 5 is formed by compression molding between the middle mold inner frame 2 and the middle mold outer frame 3, the upper mold plate 4 is first disassembled and removed, and then the cross-shaped push rod assembly 6 is disassembled and removed from the middle section of the front inner frame mold 23 and the middle section of the rear inner frame mold 24 are disassembled and removed, and then the two ends of the front inner frame mold 23 and the two ends of the rear inner frame mold 24 are disassembled and removed, and finally the left inner frame mold 21 and the right inner frame mold 22 are disassembled and removed to remove the square bellows 5; when demolding, the front inner frame The mold 23 and the rear inner frame mold 24 are segmented. When the middle mold inner frame 2 is disassembled and taken out, the middle section of the front inner frame mold 23 and the middle section of the rear inner frame mold 24 are partially disassembled and taken out with a smaller adsorption force. After the middle section of the front inner frame mold 23 and the middle section of the rear inner frame mold 24 are disassembled, the exposed square corrugated tube 5 can obtain elastic deformation release space, which solves the problem that the forced separation of the middle mold inner frame 2 and the square corrugated tube 5 on any side of the whole plate structure is easy to cause tearing, damage and deformation during demolding.

Claims

1. A mold structure for a square bellows rubber product, characterized in that: include: Middle mold outer frame (3); The middle mold inner frame (2) and the middle mold outer frame (3) form a molding space for compression molding of the square bellows (5), and the middle mold inner frame (2) has a segmented structure.

2. The mold structure of the square bellows rubber product according to claim 1, characterized in that: It also includes a lower mold (1) that provides an installation base, a middle mold outer frame (3) that is composed of four pieces that are correspondingly installed on the top of the lower mold (1), the ends of the middle mold outer frame (3) are in close contact with each other, and a middle mold inner frame (2) is installed on the top of the lower mold (1) located inside the middle mold outer frame (3), and a molding space is formed between the middle mold inner frame (2) and the middle mold outer frame (3) for compression molding of the square corrugated pipe (5).

3. The mold structure of the square bellows rubber product according to claim 1, characterized in that: The middle mold inner frame (2) comprises an integral left inner frame mold (21) and a right inner frame mold (22); and a segmented front inner frame mold (23) and a rear inner frame mold (24); the front inner frame mold (23) and the rear inner frame mold (24) are both divided into three sections.

4. The mold structure of the square bellows rubber product according to claim 3, characterized in that: The left inner frame mold (21), the right inner frame mold (22), the front inner frame mold (23), and the rear inner frame mold (24) are marked with numbers (7). The left inner frame mold (21), the right inner frame mold (22), the front inner frame mold (23), and the rear inner frame mold (24) are fixed with demoulding handles (25).

5. The mold structure of the square bellows rubber product according to claim 1, characterized in that: The interior of the middle mold inner frame (2) is supported by a cross-shaped top rod assembly (6); the cross-shaped top rod assembly (6) comprises one transverse top (61) and two longitudinal tops (62), the two longitudinal tops (62) are spaced apart and perpendicularly intersect with the transverse top (61), and the longitudinal top (62) and the transverse top (61) are fixedly connected at the intersection.

6. The mold structure of the square bellows rubber product according to claim 5, characterized in that: The two ends of the transverse top (61) support the left inner frame mold (21) and the right inner frame mold (22), the longitudinal top (62) supports the intersection of the front inner frame mold (23) and the rear inner frame mold (24) segments, and the longitudinal top (62) supports the front inner frame mold (23) and the rear inner frame mold (24) at an inclined surface; a bottom top (63) is fixed below the longitudinal top (62) by screws, and the bottom top (63) directly supports the intersection of the front inner frame mold (23) and the rear inner frame mold (24) segments.

7. The mold structure of the square bellows rubber product according to claim 1, characterized in that: It also includes an upper mold (4) which is installed with the middle mold outer frame (3), and the bottom surface of the upper mold (4) is pressed on the longitudinal top (62) and the transverse top (61) ends.

8. The mold structure of the square bellows rubber product according to claim 1, characterized in that: The upper mold (4) and the lower mold (1) are provided with mold seats (8) on the lateral sides.

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