Membrane forming die

Abstract

The utility model discloses a diaphragm forming die. The diaphragm forming die comprises an upper die base, an upper forming block, a lower die plate, a lower base plate, a lower die base, a plurality of die feet, two positioning plates, two positioning strips, a top strip, a top strip spring, a beating rod, a top plate and a top plate guide column. The positioning plate is fixedly installed on the lower die plate, the positioning strip is installed on the positioning plate, protruding teeth are arranged on the inner side of the positioning strip, the top strip is movably arranged in a forming cavity of the lower die plate in a sleeved mode, the lower end of the top strip is connected with the upper end of the beating rod, the lower end of the beating rod penetrates through the lower cushion plate and the lower die base and then is connected with the top plate, and the top strip spring is arranged between the top strip and the lower die base. The top plate guide column is vertically fixed to the outer side of the top plate and movably arranged in the guide column hole of the lower die base in a penetrating mode. According to the utility model, the positioning strip is matched with the middle positioning plate on the lower template to form a product positioning structure, the inner side of the positioning strip is provided with the convex teeth, and the end surfaces of the convex teeth are used as positioning surfaces of a product and are in point or small plane contact, so that the positioning precision of the product is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of injection mould, in particular to a kind of diaphragm forming die. BACKGROUND

[0002] The material and manufacturing method of automotive interior are very important, the existing automotive interior manufacturing process includes slush molding, PU spraying, in-mold transfer printing, in-mold film forming, water-assisted injection molding and low-pressure injection molding, wherein in-mold film forming has greater surface stretching capability, suitable for complex surface automotive interior, the existing automotive interior diaphragm forming basically adopts thermoplastic deformation, as shown in Figure 1 A long strip diaphragm 100 is obtained by bending long strip sheet diaphragm, due to high product precision requirement, positioning precision of sheet diaphragm has higher requirement during forming, and traditional positioning method is difficult to meet the forming requirement of the product. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of diaphragm forming die with improved positioning precision.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows:

[0005] The utility model is a kind of diaphragm forming die, including upper die holder, upper forming block, lower die plate, lower backing plate, lower die holder, multiple die feet, two positioning plates, two positioning strips, top strip, top strip spring, punch, top plate, top plate guide column;

[0006] The top surface of the upper forming block is fixed to the bottom surface of the upper die holder, and the bottom surface of the upper forming block extends to the lower die plate, the lower die plate, the lower backing plate, the lower die holder and the multiple die feet are fixed together in sequence;The lower die plate has a central positioning plate protruding upward in the middle, and the lower die plate top surface has a sliding groove on both sides, and a long strip-shaped forming cavity is formed on both sides of the central positioning plate;The two positioning plates are respectively fixedly installed in the sliding grooves on the top surface of the lower die plate and located outside the forming cavity of the lower die plate, the two positioning strips are respectively installed on the top surfaces of the two positioning plates, the inner side of the positioning strip has a protruding tooth, the end face of the protruding tooth is a positioning surface of the product, and the positioning strip cooperates with the central positioning plate on the lower die plate to form a product positioning structure;The top strip is movably sleeved in the forming cavity of the lower die plate, the lower end of the top strip is connected with the upper end of the punch, the lower end of the punch passes through the lower backing plate and the lower die holder and is connected with the top plate, the top strip spring is arranged between the top strip and the lower die holder, and the top plate guide column is vertically fixed to the outer side of the top plate and movably arranged in the guide column hole of the lower die holder.

[0007] The positioning plate is composed of two or more sliding plates, and the two or more sliding plates are fixed side by side in the sliding groove on the top surface of the lower die plate.

[0008] The upper forming blocks have two blocks, and the top surfaces of the two blocks are fixed on the bottom surface of the upper die seat, and the bottom surfaces of the two blocks respectively extend to the two forming cavities of the lower die plate.

[0009] After the above scheme is adopted, since the product positioning structure is formed by the positioning strip and the middle positioning plate on the lower die plate, the inner side of the positioning strip has the protruding teeth, the end face of the protruding teeth is used as the positioning surface of the product, the product is contacted by the point or the small plane, the positioning precision of the product is greatly improved, and the product positioning swing caused by the plane positioning is avoided.

[0010] The utility model will be further described in connection with the drawings and specific embodiments. DRAWINGS

[0011] Figure 1 is the axonometric view of the product;

[0012] Figure 2 is the axonometric view of the utility model;

[0013] Figure 3 is the top view of the lower die of the utility model;

[0014] Figure 4 is the side view of the lower die of the utility model;

[0015] Figure 5 is the exploded view of the lower die of the utility model. CONCRETE EMBODIMENT

[0016] As shown in Figures 2-5 , the utility model is a diaphragm forming die, including upper die seat 1, upper forming block 2, lower die plate 3, lower pad plate 4, lower die seat 5, a plurality of die feet 6, two positioning plates 7, two positioning strips 8, top strip 9, top strip spring 10, top plate 20, top plate guide column 30, and punch 40.

[0017] The middle part of the lower die plate 3 is provided with an upwardly protruding middle positioning plate 31, and the top surface of the lower die plate 3 is provided with sliding grooves 32 on both sides, and the middle positioning plate 31 is provided with long strip-shaped forming cavities 33 on both sides; the upper forming blocks 2 are two, and the top surfaces of the two upper forming blocks 2 are fixed on the bottom surface of the upper die seat 1, and the bottom surfaces of the upper forming blocks 2 extend to the two forming cavities 33 of the lower die plate 3 respectively, and the lower die plate 3, the lower pad plate 4, the lower die seat 5 and the plurality of die feet 6 are sequentially fixed together; the two positioning plates 7 are respectively fixedly installed in the sliding grooves 32 on the top surface of the lower die plate 3 and located outside the forming cavities 33 of the lower die plate 3, and the two positioning strips 8 are respectively installed on the top surfaces of the two positioning plates 7, and the inner side of the positioning strip 8 is provided with a protruding tooth 81, and the end surface of the protruding tooth 81 is a positioning surface of a product, and the positioning strip 8 cooperates with the middle positioning plate 31 on the lower die plate 3 to form a product positioning structure; the top strip 9 is movably sleeved in the forming cavity 33 of the lower die plate 1, the lower end of the top strip 9 is connected with the upper end of the knocking rod 40, the lower end of the knocking rod 40 penetrates through the lower pad plate 4 and the lower die seat 5 and is connected with the top plate 20, the top strip spring 10 is arranged between the top strip 9 and the lower die seat 5, and the top plate guide column 30 is vertically fixed outside the top plate 20 and movably penetrates through the guide column hole 51 in the lower die seat 5.

[0018] The positioning plate 7 has two structures:

[0019] Structure 1: the positioning plate 7 is composed of a sliding plate 71, and the sliding plate 71 is fixed in the sliding groove 32 on the top surface of the lower die plate 3.

[0020] Structure 2: the positioning plate 7A is composed of three sliding plates 71A, and the three sliding plates 71A are fixed side by side in the sliding groove 32 on the top surface of the lower die plate 3.

[0021] The working principle of the utility model is as follows:

[0022] The sheet-shaped diaphragm is positioned in the forming cavity 33 of the lower die plate 3 and positioned by the inner side protruding tooth of the positioning strip 8 and the middle positioning plate 31 of the lower die plate 3, the upper forming block 2 installed on the upper die seat 1 is pressed downward into the forming cavity 33 of the lower die plate 3, and after a certain pressure maintaining time, the sheet-shaped diaphragm is formed into a long strip-shaped diaphragm 100 (as shown in the figure). Figure 1 After the mold is opened, the long strip-shaped diaphragm 100 is pushed out upward under the driving force of the top strip spring 10.

[0023] The above only describes the preferred embodiment of the utility model, and therefore cannot limit the range of the utility model, that is, equivalent changes and modifications made according to the patent range and content of the specification of the utility model should still belong to the range covered by the utility model patent.

Claims

1. A diaphragm forming mold characterized by: The utility model relates to a mould for producing a product, which comprises an upper mould base, an upper forming block, a lower mould plate, a lower backing plate, a lower mould base, a plurality of mould feet, two positioning plates, two positioning strips, a top strip, a top strip spring, a punch, a top plate and a top plate guide column. The top surface of the upper forming block is fixed on the bottom surface of the upper mould base, and the bottom surface of the upper forming block extends to the lower mould plate; the lower mould plate, the lower backing plate, the lower mould base and the plurality of mould feet are fixed in sequence; the middle part of the lower mould plate is provided with a middle positioning plate protruding upward, and the top surface of the lower mould plate is provided with sliding grooves on both sides thereof; the two positioning plates are respectively fixedly installed in the sliding grooves on the top surface of the lower mould plate and located outside the forming cavities of the lower mould plate; the two positioning strips are respectively installed on the top surfaces of the two positioning plates; the inner side of each positioning strip is provided with a protruding tooth, and the end surface of the protruding tooth is a positioning surface of the product; the positioning strips and the middle positioning plate on the lower mould plate cooperate to form a product positioning structure; the top strip is movably sleeved in the forming cavity of the lower mould plate; the lower end of the top strip is connected with the upper end of the punch; the lower end of the punch passes through the lower backing plate and the lower mould base and is connected with the top plate; the top strip spring is arranged between the top strip and the lower mould base; and the top plate guide column is vertically fixed on the outer side of the top plate and movably passes through the guide column hole of the lower mould base.

2. The diaphragm forming mold of claim 1, wherein: The positioning plate is composed of two or more sliding plates, which are fixed side by side in the sliding grooves on the top surface of the lower mould plate.

3. The diaphragm forming mold of claim 1, wherein: The upper forming block has two blocks, and the top surfaces of the two upper forming blocks are fixed on the bottom surface of the upper mould base; and the bottom surfaces of the two upper forming blocks respectively extend to the two forming cavities of the lower mould plate.

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