CN203485428U - Improved high-pressure forming die - Google Patents

Abstract

The utility model provides an improvement type high pressure forming die, technical scheme is: the mold comprises a front mold core, a rear mold core and a cavity positioned at the joint of the front mold core and the rear mold core; the front mold core and the rear mold core respectively comprise a front mold closing part and a rear mold closing part, and a mold closing surface is formed by the front mold closing part and the rear mold closing part during mold closing and the periphery of the mold cavity is sealed; the rear mold core comprises a mold core positioned in the cavity, and the front mold core is provided with a high-pressure and high-pressure air path; the front die core is also provided with a spring pressing block device, and the spring pressing block device comprises a first spring and a pressing block; wherein the first spring is fixed on the front die core, and the pressing block is fixed below the first spring and extends into the die cavity; the rear mold closing part comprises at least two elastic devices, each elastic device comprises a second spring fixed on the rear mold core and a movable body arranged on the second spring, and the movable body and the front mold closing part form a mold closing surface during mold closing; the movable bodies are provided with positioning needles. The high-pressure forming die is not easy to cause pattern shape deformation, has high product quality and saves materials.

Description

An Improved High Pressure Forming Die

technical field

The utility model relates to a molding die for PET film in IML technology, in particular to an improved high-pressure molding die.

Background technique

 The traditional high-pressure forming mold is shown in Figure 1-2: it includes the front mold core, high-pressure air circuit, positioning pin and rear mold core, and the positioning pin is used as a part to fix the sheet during pressing. However, because the positioning pins can only fix the edge of the sheet, and the main part of the sheet has no positioning insert structure, for products with high quality requirements or products with patterns on the edges, the traditional high-pressure forming mold will cause the pattern shape The deformation and distortion lead to a high defect rate; and the butt joint structure of the front mold core and the rear mold core of the traditional high pressure forming mold makes the product 5.1 of the traditional high pressure forming mold have the edge part 10 that needs to be stretched, and the product needs to be stretched to make it conform to demand, leading to the waste of materials and the decline of product quality.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide an improved high-pressure forming die, which overcomes the shortcomings of traditional high-pressure forming dies that easily cause pattern shape deformation, low product quality and waste materials.

In order to solve the above problems, the technical scheme adopted in the utility model is as follows:

As shown in Figure 2-Figure 4, an improved high-pressure forming mold includes a front mold core and a rear mold core, and a cavity at the junction of the front mold core and the rear mold core; the rear mold core includes a mold core located in the cavity Heart; there is a front clamping part on the front mold core, and a rear clamping part on the rear mold core. The front clamping part and the rear clamping part form a clamping surface when the mold is closed, and seal the cavity around; A high-pressure air circuit is provided on the front mold core; a spring pressing block device is also provided on the front mold core, and the spring pressing block device includes a first spring and a pressing block; wherein the first spring is fixed on the front mold core, and the pressing block It is fixed under the first spring and extends into the mold cavity; the rear clamping part includes at least two elastic devices, and the elastic device includes a second spring fixed on the rear mold core and a movable body arranged on the second spring, and the movable body and The front mold clamping part forms a mold clamping surface when the mold is clamped; positioning pins are provided on the movable body.

Preferably, there are two first springs for connecting the pressing blocks.

Preferably, at least one positioning pin is arranged on the movable body.

Preferably, the bottom surface of the pressing block is flush with the bottom surface of the front clamping part when the mold is opened.

Preferably, when the mold is opened, the top surface of the movable body is flush with the top surface of the mold core.

The beneficial effect of the utility model is that: the spring pressing block device on the front mold core and the elastic device on the rear mold core fix the main part of the sheet when pressing the mold, so that the high-pressure forming mold is not easy to cause the pattern shape to deform, and reduces the The defect rate of the product; the butt joint structure of the front mold core and the rear mold core of this high-pressure forming mold makes the cavity conform to the shape of the required product, so that the sheet is formed at one time during compression molding, without stretching the edge, saving materials and avoiding The decline in product quality during the stretching process improves product quality.

Description of drawings

Fig. 1 is a structural schematic view of a traditional high-pressure forming mold when it is pressed.

Figure 2 is a comparison chart of traditional high pressure forming mold products and target products.

Fig. 3 is a structural schematic diagram of the utility model when pressing the mold.

Fig. 4 is a structural schematic view before pressing the mold of the utility model.

Notes on drawings:

1. Front mold core; 2. First spring; 3. Briquetting block; 4. High-pressure air circuit; 5. Sheet; 6. Positioning pin; 7. Movable body; 8. Second spring; 10. The edge part needs to be stretched; 11. The cavity; 12. The core; 5.1. The product of the traditional high-pressure forming mold; 5.2. The target product.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

An improved high-pressure forming mold, which includes a front mold core 1 and a rear mold core 9, and a cavity 11 located at the junction of the front mold core 1 and the rear mold core 9; the rear mold core 9 includes a mold core located in the cavity 11 Heart 12; there is a front clamping part on the front mold core 1, a rear clamping part is arranged on the rear mold core 9, and the front clamping part and the rear clamping part form a clamping surface when the mold is closed, and the cavity 11 The surrounding area is closed; the front mold core 1 is provided with a high-pressure gas circuit 4; the front mold core 1 is also provided with a spring pressing device, and the spring pressing device includes two first springs 2 and a pressing block 3; two of them The first springs 2 are all fixed on the front mold core 1, and the pressure block 3 is fixed under the two first springs 2 and extends into the cavity 11; the rear mold clamping part includes two elastic devices, and the elastic device includes a The second spring 8 on the core 9 and the movable body 7 arranged on the second spring 8, the movable body 7 and the front clamping part form a mold clamping surface when the mold is closed, and a positioning pin is arranged on the two movable bodies 7 6.

The mold opening state of this embodiment is: the front mold core 1 is separated from the rear mold core 9, the first spring 2 is in a stretched state, the bottom surface of the pressing block 3 is flush with the bottom surface of the front clamping part; the second spring 8 is in compression state, the top surface of the movable body 7 is flush with the top surface of the mold core 12 .

When in use, first place the sheet 5 on the rear mold core 9, fix the sheet 5 with positioning pins 6 and heat it; 2 is in a compressed state, the first spring 2 presses the pressing block 3 on the sheet 5, makes the second spring 8 in a compressed state, presses the movable body 7 on the sheet 5, and the mold cavity 11 is sealed; finally from High-pressure gas is injected into the left and right high-pressure gas channels, and the sheet 5 is formed into the target product 5.2 under the action of the high-pressure gas.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. The scope of protection required by the utility model.

Claims (5)

1. An improved high-pressure forming mold, which includes a front mold core and a back mold core, and a cavity at the junction of the front mold core and the back mold core; the back mold core includes a mold core positioned in the cavity; on the front mold core There is a front clamping part, and there is a rear clamping part on the rear mold core. The front clamping part and the rear clamping part form a clamping surface when the mold is closed, and seal the cavity around; High-pressure air circuit; it is characterized in that: the front mold core is also provided with a spring pressing device, and the spring pressing device includes a first spring and a pressing block; wherein the first spring is fixed on the front mold core, and the pressing block is fixed on the second One spring is under and extends into the mold cavity; the rear clamping part includes at least two elastic devices, the elastic device includes a second spring fixed on the rear mold core and a movable body arranged on the second spring, and the movable body and the front clamping The part forms the mold clamping surface when the mold is clamped; positioning pins are provided on the movable body. 2. The improved high pressure molding die according to claim 1, characterized in that there are two first springs for connecting the pressing blocks. 3. The improved high-pressure molding die according to claim 1, wherein at least one positioning pin is arranged on the movable body. 4. The improved high-pressure molding die according to claim 1, wherein the bottom surface of the pressing block is flush with the bottom surface of the front clamping part when the mold is opened. 5. The improved high-pressure molding die according to claim 1, wherein the top surface of the movable body is flush with the top surface of the mold core when the mold is opened.

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