Internal high-pressure positioning mold structure

Abstract

The utility model discloses an internal high-pressure positioning mold structure and belongs to the field of mechanical equipment manufacturing. Comprising a lower mold insert, a mold cavity is formed after the lower mold insert and an upper mold insert are closed, axial end sockets extend into the mold cavity from the two ends of the mold cavity and conduct sealing and injection pressure expansion on a workpiece arranged in the mold cavity, and a spring positioning mechanism is arranged in the lower mold insert. The spring positioning mechanism is used for quickly positioning a workpiece placed on the lower die insert. The die has the advantages that the structure is simple, online maintenance can be carried out, the die does not need to be discharged from a machine in the maintenance process, smooth production can be guaranteed, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mechanical equipment manufacturing, specifically relates to a high pressure positioning mould structure. BACKGROUND

[0002] The high pressure forming is also called hydraulic forming or hydraulic force forming, and it is a material forming process for using liquid as forming medium to control internal pressure and material flow to achieve the purpose of forming hollow parts. In recent years, the high pressure forming products are widely applied in the field of automobile structural parts, and are applied to the vehicle body and chassis. In the high pressure production, there are two modes of automation and manual work. The relative position is accurate in the automatic production because the products are put on and off by machines, and the failure rate of the mould and equipment is low. Otherwise, the production efficiency will be affected by frequent shutdown.

[0003] However, compared with the automatic production mould and equipment, the manual production mode has lower cost. In the process of putting on and off the parts, the workers can only judge whether the placement position is correct by naked eyes, and the precision is poor. Therefore, the high pressure mould positioning is very necessary. The previous high pressure mould has no positioning or has positioning but the positioning is complicated. The positioning function can be achieved, but it is not convenient for online maintenance. When the mould is maintained, it can only be taken off the machine, which seriously affects the smooth production and causes great cost waste. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a high pressure positioning mould structure which has simple structure, can be maintained online, and does not need to take off the mould during the maintenance process.

[0005] A high pressure positioning mould structure comprises a lower mould insert, the lower mould insert and an upper mould insert form a mould cavity after clamping, an axial head extends into the mould cavity from both ends of the mould cavity and seals and pressurizes and expands the workpiece in the mould cavity, a spring positioning mechanism is arranged in the lower mould insert, and the spring positioning mechanism is used for quickly positioning the workpiece placed on the lower mould insert.

[0006] Further, an accommodation groove for installing the spring positioning mechanism is formed in one end of the lower mould insert close to the inlet of one of the mould cavities, and the accommodation groove is located directly below the axial line of the mould cavity.

[0007] Further, the spring positioning mechanism comprises a positioning block and a nitrogen spring, one end of the nitrogen spring is fixedly connected with the bottom of the accommodation groove, the other end is fixedly connected with the positioning block, and the positioning block is slidably connected with the inner wall of the accommodation groove.

[0008] Further, the top of the positioning block has a slope surface, and the slope surface faces the inlet end of the mould cavity close to the positioning block.

[0009] The utility model adopting the above technical scheme can achieve the following beneficial effects:

[0010] The utility model has simple structure, can carry out maintenance on line, and the mould does not need to be disassembled in the maintenance process, can guarantee production smooth and saves the cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is structure schematic diagram of the utility model.

[0012] Fig. 2 It is structure schematic diagram of the utility model operation state.

[0013] In the drawing, 1 - upper mould insert, 2 - lower mould insert, 3 - positioning block, 4 - nitrogen spring, 5 - axial end. DETAILED DESCRIPTION

[0014] As Figs. 1-2 The utility model discloses a high -pressure positioning mould structure, including lower mould insert 2, lower mould insert 2 with upper mould insert 1 form mould cavity after closing mould, axial end 5 from the both ends of mould cavity stretches into and seals and injects pressure and rises type to the workpiece that is opposite in mould cavity, above is the same place of the utility model with prior art;Different is that the lower mould insert 2 of the utility model is provided with spring positioning mechanism, and the spring positioning mechanism is used for the quick positioning of the workpiece placed on the lower mould insert 2, can alleviate the work burden of worker to some extent, can also guarantee the smoothness of production.

[0015] Specifically, the lower mould insert 2 is provided with a containing groove for installing the spring positioning mechanism at one end close to the inlet of one of the mould cavities, and the containing groove is located directly below the axis of the mould cavity. Since the axis of the mould cavity coincides with the axis of the axial end 5, the spring positioning mechanism is also located on the path of the axial end 5 on the same side. In this embodiment, the spring positioning mechanism includes a positioning block 3 and a nitrogen spring 4. One end of the nitrogen spring 4 is fixedly connected to the bottom of the containing groove, and the other end is fixedly connected to the positioning block 3. The positioning block 3 is slidably connected to the inner wall of the containing groove. The top of the positioning block 3 is provided with a slope surface, and the slope surface faces the inlet of the mould cavity close to the positioning block 3. In the initial state, the positioning block 3 is exposed to the surface of the lower mould insert 2 under the support of the nitrogen spring 4. The lowest point of the slope surface is flush with the surface of the lower mould insert 2. When placing the workpiece, the workpiece can be quickly positioned by abutting against the back slope surface of the positioning block 3.

[0016] The working principle of the utility model is as follows:

[0017] Before operation, the upper die insert 1 and the lower die insert 2 are in an open state, the nitrogen spring 4 of the spring positioning mechanism pushes the positioning block 3 out of the surface of the lower die insert 2, and the axial head 5 close to the spring positioning mechanism is outside the positioning block 3; when the production starts, the worker places the workpiece on the lower die insert 2 and abuts against the back slope surface of the positioning block 3, so that the workpiece is in the correct operation position. At this time, the worker operates the equipment to start running, and the upper die insert 1 is pressed down and is in a closed die state with the lower die insert 2 to form a die cavity during running. Then the conventional injection pressure expansion process is carried out, the axial cylinder starts to drive the axial head 5 to move inward along the axial direction of the die cavity, and in the process of moving, because the top of the positioning block 3 has a slope surface, the axial head 5 on the same side of the positioning block 3 will give the positioning block 3 a downward force, the nitrogen spring 4 will be compressed, and the positioning block 3 will move downward with the nitrogen spring 4 to be flush with the lower die insert 2, at this time the nitrogen spring 4 is always in a compressed state and always gives the positioning block 3 an upward force, but because the positioning block 3 is limited by the axial head 5 and is in a static state, the positioning block 3 exits the moving path of the axial head 5, and then the axial head 5 continues to move forward to seal the workpiece and starts the injection pressure expansion. When the injection pressure expansion is completed, the axial head 5 moves backward, and when gradually leaving the positioning block 3 area, the positioning block 3 is gradually popped out and reset under the driving of the nitrogen spring 4, preparing for the positioning of the next workpiece.

[0018] The above merely describes a preferred embodiment of the present application, and is not intended to limit the present application. Any equivalent replacement and modification made by any person skilled in the art without departing from the guidance of the present application shall be considered to fall within the protection scope of the present application.

Claims

1. An internal high-pressure positioning mold structure, comprising a lower mold insert (2), wherein the lower mold insert (2) and the upper mold insert (1) are closed to form a mold cavity, and an axial end cap (5) extends from both ends of the mold cavity to seal and pressurize the workpiece placed in the mold cavity, characterized in that: The lower die insert (2) is provided with a spring positioning mechanism, which is used for quickly positioning a workpiece placed on the lower die insert (2).

2. The internal high pressure positioning mold structure according to claim 1, wherein: An accommodation groove for mounting the spring positioning mechanism is formed on one end of the lower die insert (2) close to an inlet of one of the die cavities, and the accommodation groove is located directly below an axis of the die cavity.

3. The internal high pressure positioning mold structure of claim 2, wherein: The spring positioning mechanism comprises a positioning block (3) and a nitrogen spring (4), wherein one end of the nitrogen spring (4) is fixedly connected with a bottom of the accommodation groove, the other end is fixedly connected with the positioning block (3), and the positioning block (3) is in sliding connection with an inner wall of the accommodation groove.

4. The internal high pressure positioning mold structure of claim 3, wherein: The positioning block (3) has a slope on a top thereof, and the slope faces the inlet of the die cavity close to the positioning block (3).

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