Product limiting structure of internal high-pressure water injection molding mold

Abstract

The utility model discloses a product limiting structure of an internal high-pressure water injection molding mold. The product limiting structure comprises an upper mold, a lower mold, a water sealing mold head, a pressing mechanism and a positioning mechanism, the pressing mechanism is composed of a spring, a cover plate and a screw. The positioning mechanism is composed of a limiting step, a kidney-shaped positioning core rod head and a guide rod which are integrally formed. The cover plate is fixed to the lower die through screws, the guide rod is installed on the cover plate in a sliding mode, and the two ends of the spring act on the cover plate and the limiting step respectively. The problems that an existing mold is not provided with a positioning device, the crumple groove is visually positioned through artificial experience, positioning is not accurate, and crumple groove foldover can be generated are solved, after the positioning device is additionally arranged, the crumple groove and the mold are accurately overlapped, and the product precision is guaranteed. According to the internal high-pressure mold product positioning mechanism, a spring pressing mechanism is utilized, a kidney-shaped positioning core rod head stretches out and draws back along with advancing and retreating of a water injection mold head, and an original mold structure is not changed.

Description

Technical Field

[0001] The utility model belongs to the technical field of internal high-pressure water injection molding, in particular to a product limiting structure of an internal high-pressure water injection molding die. Background Art

[0002] With the application of lightweight automobiles, aluminum alloy bumpers are used more and more. The energy absorption box of the bumper is designed with a crush groove. Due to the high processing precision, the area around the crush groove cannot be deformed. The existing stamping forming cannot meet the quality requirements. It is necessary to perform internal high-pressure shaping after stamping to ensure the shape accuracy of the energy absorption box.

[0003] There is no tube positioning device at both ends of the existing mold. The relative position between the tube and the mold is determined based on operating experience. The collapse groove cannot completely overlap with the inner high-pressure mold, resulting in overlapping images of the collapse groove, which affects the energy absorption effect. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to add a positioning device to the existing mold port to ensure accurate positioning of the product during processing and ensure the processing accuracy of the product water injection molding.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a product limiting structure of an internal high-pressure water injection molding die, comprising an upper die, a lower die, a water sealing die head, a pressing mechanism and a positioning mechanism;

[0006] The pressing mechanism is composed of a spring, a cover plate and screws;

[0007] The positioning mechanism is composed of an integrally formed limiting step, a waist-shaped positioning core rod head and a guide rod;

[0008] A waist-shaped guide hole and a limit step guide hole are coaxially arranged on the lower die. The waist-shaped positioning core rod head is slidingly installed in the waist-shaped guide hole, and the limit step is slidingly installed in the limit step guide hole. The spring is sleeved on the guide rod, and the cover plate is fixed to the lower die with screws. The guide rod is slidingly installed on the cover plate, and the two ends of the spring act on the cover plate and the limit step respectively.

[0009] Preferably, the guide section of the water sealing die head is configured as a first inclined surface structure, and the outer end surface of the waist-shaped positioning core rod head is configured as a second inclined surface structure parallel to the first inclined surface structure.

[0010] Preferably, the top surface of the waist-shaped positioning core rod is provided with an installation identification point.

[0011] Compared with existing technologies, this new invention overcomes the problem of existing molds lacking a positioning device, where the crush groove relies on manual visual positioning, resulting in inaccurate positioning and overlapping of the crush groove. By adding this positioning device, the crush groove and mold are precisely aligned, ensuring product accuracy. The internal high-pressure mold's product positioning mechanism utilizes a spring-loaded mechanism, and the waist-shaped positioning core rod head expands and contracts with the advance and retreat of the water injection die head, without changing the original mold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 It is an exploded view of the present utility model.

[0014] Figure 2 It is a schematic diagram of the location structure of the pipe material collapse groove.

[0015] Figure 3 It is a schematic diagram of the installation structure of the clamping mechanism and the positioning mechanism.

[0016] Figure 4 It is a structural schematic diagram of the waist-shaped guide hole and the limit step guide hole.

[0017] Figure 5 It is a structural diagram of the positioning mechanism.

[0018] Figure 6 It is a structural diagram of the clamping mechanism. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with specific embodiments:

[0020] like Figures 1 to 6 The product limiting structure of an internal high-pressure water injection molding die shown in the figure includes an upper die 1, a lower die 2, a water sealing die head 4, a pressing mechanism 5 and a positioning mechanism 6;

[0021] The pressing mechanism 5 is composed of a spring 51, a cover plate 52 and a screw 53;

[0022] The positioning mechanism 6 is composed of an integrally formed limiting step 61, a waist-shaped positioning core rod head 62 and a guide rod 63;

[0023] A waist-shaped guide hole 24 and a limit step guide hole 25 are coaxially arranged on the lower mold 2. The waist-shaped positioning core rod head 62 is slidingly installed in the waist-shaped guide hole 24, and the limit step 61 is slidingly installed in the limit step guide hole 25. The spring 51 is sleeved and installed on the guide rod 63. The cover plate 52 is fixed to the lower mold 2 with screws. The guide rod 63 is slidingly installed on the cover plate 52. The two ends of the spring 51 act on the cover plate 52 and the limit step 61 respectively.

[0024] The guide section of the water sealing die head 4 is set to a first inclined surface structure 41. When the water sealing die head 4 is sealed and installed with both ends of the pipe material 3, the first inclined surface structure 41 plays a guiding role. The outer end surface of the waist-shaped positioning core rod head 62 is set to a second inclined surface structure 21 parallel to the first inclined surface structure 41. The first inclined surface structure 41 cooperates with the second inclined surface structure 21 to smoothly transition when the water sealing die head 4 moves forward, compressing the positioning mechanism 6 into the waist-shaped guide hole 24.

[0025] The top surface of the waist-shaped positioning core rod head 62 is provided with an installation identification point, and the installation identification point is upward to facilitate determination of the installation method of the positioning mechanism 6 .

[0026] The positioning mechanism 6 is installed in the waist-shaped guide hole 24 and the limit step guide hole 25, and then the pressing mechanism 5 is installed to make the spring 51 press on the limit step 61 of the positioning mechanism 6. During production, the tube material 3 with the collapse groove 31 is placed in the lower mold 2, and the right end surface of the tube material 3 is pressed against the waist-shaped positioning core rod head 62 for positioning; then the upper mold 1 and the lower mold 2 are closed, and the water sealing die head 4 is fixed and sealed on both ends of the tube material 3. When the water sealing die head 4 moves forward, it contacts the waist-shaped positioning core rod head 62, and the waist-shaped positioning During the extrusion process, the core rod head 62 overcomes the elastic force of the spring 51 and retreats backward. After the water-sealing die head 4 is fixed, high-pressure water is introduced into the water-sealing die head 4. The upper mold 1 and the lower mold 2 are closed, and the forming convex surfaces 23 on the upper mold 1 and the lower mold 2 and the water-sealing die head 4 seal the high-pressure water in the tube material 3 to complete the high-pressure water injection molding. After molding, the water-sealing die head 4 and the upper mold are withdrawn, and the positioning mechanism 6 pops out the waist-shaped guide hole 24 under the pressure of the spring 51, and the molded product is taken out, completing the high-pressure water injection molding.

Claims

1. A product limiting structure for an internal high-pressure water injection molding die, characterized in that: It comprises an upper die (1), a lower die (2), a water sealing die head (4), a pressing mechanism (5) and a positioning mechanism (6); The pressing mechanism (5) is composed of a spring (51), a cover plate (52) and a screw (53); The positioning mechanism (6) is composed of an integrally formed limiting step (61), a waist-shaped positioning core rod head (62), and a guide rod (63); A waist-shaped guide hole (24) and a limiting step guide hole (25) are coaxially arranged on the lower mold (2); the waist-shaped positioning core rod head (62) is slidably installed in the waist-shaped guide hole (24); the limiting step (61) is slidably installed in the limiting step guide hole (25); the spring (51) is sleeved and installed on the guide rod (63); the cover plate (52) is fixed to the lower mold (2) by screws; the guide rod (63) is slidably installed on the cover plate (52); and the two ends of the spring (51) act on the cover plate (52) and the limiting step (61) respectively.

2. The internal high-pressure water injection molding mold product limiting structure according to claim 1 is characterized in that: The guide section of the water sealing die head (4) is configured as a first inclined surface structure (41), and the outer end surface of the waist-shaped positioning core rod head (62) is configured as a second inclined surface structure (21) parallel to the first inclined surface structure (41).

3. The internal high-pressure water injection molding mold product limiting structure according to claim 1 is characterized in that: The top surface of the waist-shaped positioning core rod head (62) is provided with an installation marking point.

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