Internal high-pressure forming anti-wrinkling device

Abstract

The utility model belongs to the technical field of hydraulic forming processing of metal parts, and particularly discloses an internal high-pressure forming anti-wrinkling device which comprises a water sealing push block, a connecting boss is arranged on one side of the water sealing push block, a water sealing face is arranged on the periphery of the connecting boss, the water sealing face is used for being sealed with the inner pipe wall of an internal high-pressure forming part, and the inner pipe wall of the internal high-pressure forming part is connected with the connecting boss. A connecting boss is arranged on the inner wall of the inner high-pressure forming part, a lengthened boss is arranged on the connecting boss, the lengthened boss is arranged on the side, away from the water sealing push block, of the connecting boss, the lengthened boss is provided with an anti-wrinkling structure, and the anti-wrinkling structure is supported on the pipe inner wall of the inner high-pressure forming part and used for preventing wrinkles generated by diameter shrinkage of the pipe opening end of the inner high-pressure forming part. According to the technical scheme, in the production process, the pipe opening end of the internal high-pressure forming part can be prevented from wrinkling, the production procedures are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of internal high pressure forming processing of metal parts, in particular to an internal high pressure forming anti-wrinkle device. Background Art

[0002] The internal high pressure parts formed by internal high pressure need to use water sealing push blocks in production, such as Figure 1 As shown, in the prior art, the surface of the water-sealing push block forms a guide surface 1-9 and a water-sealing surface 1-2. A hydraulic device drives the water-sealing push block, and through the guidance of the guide surface 1-9, the water-sealing surface 1-2 of the water-sealing push block gradually adheres to the inner wall of the tube of the internal high-pressure formed part, achieving the purpose of sealing water and ensuring that the bulging liquid medium does not leak under high pressure, thereby ensuring the stability of the bulging. The purpose of sealing water can be achieved through the calculation and optimization design of the water-sealing push block. However, for internal high-pressure parts with a reduced diameter at the end, the conventional water-sealing push block does not support the pipe mouth of the internal high-pressure part, so the pipe mouth of the internal high-pressure part will wrinkle. The wrinkled internal high-pressure part needs to be further reworked or scrapped, affecting production efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an internal high-pressure forming anti-wrinkle device to solve the problem that during the pressing process, ordinary water-sealing push blocks do not support the pipe mouth of the internal high-pressure part, so the pipe mouth end of the internal high-pressure part shrinks and wrinkles, resulting in a high defective rate of the internal high-pressure part.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: an internal high-pressure forming anti-wrinkle device, including a water-sealing push block, a connecting boss is provided on one side of the water-sealing push block, the outer periphery of the connecting boss is a water-sealing surface, and the water-sealing surface is used to form a seal with the inner wall of the tube of the internal high-pressure formed part, and an extended boss is provided on the connecting boss, and the extended boss is arranged on the side of the connecting boss away from the water-sealing push block, and the extended boss is provided with an anti-wrinkle structure, and the anti-wrinkle structure is supported on the inner wall of the tube of the internal high-pressure formed part, and the anti-wrinkle structure is used to prevent wrinkles caused by the shrinkage of the tube end of the internal high-pressure formed part.

[0005] Furthermore, the anti-wrinkle structure includes an anti-wrinkle platform and a guide surface. The anti-wrinkle platform is provided on the extended boss. The anti-wrinkle platform is connected to the guide surface on the side away from the water-sealing push block. The guide surface and the anti-wrinkle platform correspond one to one and are arranged opposite each other. The side where the anti-wrinkle platform is connected to the guide surface is arranged flush, and the side of the guide surface away from the anti-wrinkle platform approaches the center line of the anti-wrinkle platform. The anti-wrinkle platform is supported on the inner wall of the tube of the internal high-pressure formed part. The anti-wrinkle platform is used to prevent wrinkles caused by the shrinkage of the tube end of the internal high-pressure formed part.

[0006] Furthermore, a bevel boss is provided on the connecting boss, and the bevel boss is provided on a side of the connecting boss away from the water sealing push block, and the outer side of the bevel boss is a lateral guide surface.

[0007] Furthermore, the anti-wrinkle platform and the guide surface are connected via an anti-wrinkle platform transition surface.

[0008] Furthermore, the extended boss, the inclined boss and the connecting boss are all connected to the water sealing transition surface, and the wrinkle-proof platform is flush with the connecting edge of the water sealing transition surface.

[0009] Furthermore, a water sealing step is provided between the water sealing push block and the connecting boss, and the water sealing step is used to fit with the pipe mouth end on one side of the inner high pressure forming part.

[0010] The working principle of this technical solution is:

[0011] The hydraulic device drives the water-sealing push block to move and drives the extended boss to move. The guide surface set on the extended boss first vertically changes the shape of the pipe mouth of the inner high-pressure formed part. The anti-wrinkle platform extends into the tube cavity of the inner high-pressure formed part through the guide surface and the anti-wrinkle platform transition surface. At the same time, the anti-wrinkle platform set on the upper and / or lower side of the extended boss is supported in the tube wall of the inner high-pressure formed part. The lateral guide surfaces on both sides then expand the pipe mouth of the inner high-pressure formed part laterally, changing the shape of the pipe mouth of the inner high-pressure formed part so that the pipe mouth of the inner high-pressure formed part is close to the shape of the water-sealing surface. The water-sealing push block gradually makes the water-sealing surface fit the inner wall of the pipe of the inner high-pressure part through the water-sealing transition surface, and the water-sealing push block completes the water sealing. Finally, the pressing of the press, in conjunction with the anti-wrinkle platform, causes the thickening of the inner high-pressure part caused by the reduction in diameter to slide on the press and the anti-wrinkle platform.

[0012] The beneficial effects of this technical solution are:

[0013] ① In this technical solution, an anti-wrinkle platform is provided on the upper and / or lower side of the extended boss. The anti-wrinkle platform is attached to the inner wall of the tube of the internal high-pressure formed part for support. When the press is pressed, the thickening of the internal high-pressure part due to the reduction in diameter will slide so that the wall thickness at the tube mouth is evenly distributed, thereby playing an anti-wrinkle role.

[0014] ② The anti-wrinkle platform on the upper and / or lower sides of the extended boss in this technical solution changes the method of water sealing guidance. The shape of the pipe mouth is first changed vertically by the guide surface, and then the shape of the pipe mouth is changed by the lateral guide surface, so that the shape of the pipe mouth is close to the shape of the water sealing surface. While sealing the water, the wear of the water sealing surface is reduced, and the service life of the water sealing push block is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a conventional internal high pressure forming device;

[0016] Figure 2This is a left side schematic diagram of an internal high pressure forming anti-wrinkle device of the present invention;

[0017] Figure 3 It is a front view schematic diagram of an internal high pressure forming anti-wrinkle device of the present invention. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: water sealing push block 1, water sealing step 1-1, water sealing surface 1-2, water sealing transition surface 1-3, lateral guide surface 1-4, anti-wrinkle platform 1-5, extended boss 1-6, anti-wrinkle platform transition surface 1-7, water injection hole 1-8, guide surface 1-9, connecting hole 1-10.

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The embodiment is basically as shown in the attached Figure 2-3 As shown: An internal high-pressure forming anti-wrinkle device includes a water-sealing push block 1, a conical connecting boss is provided on the right side of the water-sealing push block 1, the outer periphery of the connecting boss is a water-sealing surface 1-2, the large-diameter end of the connecting boss is connected to the water-sealing push block 1, and the small-diameter end of the connecting boss is connected to the lengthened boss 1-6. The diameter of the large-diameter end of the connecting boss is smaller than the diameter of the water-sealing push block 1, and a water-sealing step 1-1 is formed between the water-sealing push block 1 and the large-diameter end of the connecting boss. The water-sealing step 1-1 is used to fit with the pipe mouth end of the internal high-pressure forming part. An lengthened boss 1-6 is provided on the right side of the connecting boss, and the diameter of the lengthened boss 1-6 is smaller than the diameter of the small-diameter end of the connecting boss. Two conical inclined bosses are provided on the right side of the connecting boss, and the inclined bosses are provided as follows. Figure 3 On either side of the extended boss 1-6, the inclined bosses transition into arcs on the connecting boss. The outer sides of the inclined bosses are lateral guide surfaces 1-4, which laterally expand the nozzle of the internal high-pressure formed part and change the shape of the nozzle to approximate the shape of the water-sealing surface 1-2. Water-sealing transition surfaces 1-3 are provided between the extended boss 1-6 and the connection between the inclined boss and the connecting boss. Water-sealing pusher 1 uses these transition surfaces to gradually align the water-sealing surface 1-2 with the inner wall of the internal high-pressure part.

[0022] An anti-wrinkle structure is provided on the upper and / or lower side of the extended boss 1-6. In this embodiment, the anti-wrinkle structure is arranged on the upper side. The anti-wrinkle structure includes an anti-wrinkle platform 1-5 and a guide surface 1-9. The extended boss 1-6 is provided with an anti-wrinkle platform 1-5. The anti-wrinkle platform 1-5 is arranged on the right side of the small diameter end of the connecting boss. The anti-wrinkle platform 1-5 is arranged flush with the connecting edge of the water sealing transition surface 1-3. The anti-wrinkle platform 1-5 is used to prevent wrinkles caused by the shrinkage of the pipe end of the internal high-pressure formed part. The anti-wrinkle platform 1-5 is provided with a guide surface 1-9 on the side away from the water-sealing push block 1. The guide surface 1-9 corresponds to the anti-wrinkle platform 1-5 one-to-one and the two are arranged directly opposite each other. The guide surface 1-9 is arranged flush with the connecting edge of the anti-wrinkle platform 1-5. An anti-wrinkle platform transition surface 1-7 is provided between the anti-wrinkle platform 1-5 and the guide surface 1-9. The anti-wrinkle platform 1-5 is connected to the guide surface 1-9 through the anti-wrinkle platform transition surface 1-7. The connecting edge on the right side of the guide surface 1-9 is close to the center line of the extended boss 1-6. A connecting hole 1-10 is provided in the extended boss 1-6, and the connecting hole 1-10 is arranged to avoid the guide surface 1-9. A water injection hole 1-8 is provided in the water-sealing push block 1. The water injection hole 1-8 is connected to the extended boss 1-6 and is arranged to avoid the guide surface 1-9 and the connecting hole 1-10.

[0023] The specific implementation process is as follows:

[0024] The hydraulic device pushes the water-sealing push block 1 to move and drives the extended boss 1-6 to move. The guide surface 1-9 set on the extended boss 1-6 first vertically changes the shape of the pipe mouth of the inner high-pressure formed part, and the anti-wrinkle platform 1-5 extends into the tube cavity of the inner high-pressure formed part through the guide surface 1-9 and the anti-wrinkle platform transition surface 1-7. At the same time, the anti-wrinkle platform 1-5 set on the upper and / or lower side of the extended boss 1-6 is supported in the tube wall of the inner high-pressure formed part, and then the tube mouth end of the inner high-pressure formed part is laterally expanded through the lateral guide surfaces 1-4 on both sides, and the shape of the tube mouth end of the inner high-pressure formed part is changed, so that the tube mouth of the inner high-pressure formed part is close to the shape of the water-sealing surface 1-2. The water-sealing push block 1 makes the water-sealing surface 1-2 gradually fit the inner wall of the tube of the inner high-pressure part through the water-sealing transition surface 1-3, and the water-sealing push block 1 completes the water sealing. Finally, the pressing of the press cooperates with the anti-wrinkle platform 1-5, so that the inner high-pressure parts, which are thickened due to the shrinkage, will slide on the press and the anti-wrinkle platform 1-5.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0026] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several variations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An internal high pressure forming anti-wrinkle device, characterized by: The invention comprises a water sealing push block (1), wherein a connecting boss is provided on one side of the water sealing push block (1), the outer periphery of the connecting boss is a water sealing surface (1-2), the water sealing surface (1-2) is used to form a seal with the inner wall of the tube of the internal high-pressure forming part, the connecting boss is provided with an extended boss (1-6), the extended boss (1-6) is arranged on the side of the connecting boss away from the water sealing push block (1), the extended boss (1-6) is provided with an anti-wrinkle structure, the anti-wrinkle structure is supported on the inner wall of the tube of the internal high-pressure forming part, and the anti-wrinkle structure is used to prevent wrinkles caused by the shrinkage of the tube end of the internal high-pressure forming part.

2. The anti-wrinkle device for high pressure forming according to claim 1, characterized in that: The anti-wrinkle structure comprises an anti-wrinkle platform (1-5) and a guide surface (1-9). The anti-wrinkle platform (1-5) is provided on the extended boss (1-6). The anti-wrinkle platform (1-5) is connected to the guide surface (1-9) on a side away from the water sealing push block (1). The guide surface (1-9) and the anti-wrinkle platform (1-5) are arranged in a one-to-one correspondence and are arranged opposite each other. The side where the anti-wrinkle platform (1-5) is connected to the guide surface (1-9) is arranged flush. The side where the guide surface (1-9) is away from the anti-wrinkle platform (1-5) approaches the center line of the anti-wrinkle platform (1-5). The anti-wrinkle platform (1-5) is supported on the inner wall of the tube of the internal high-pressure formed part. The anti-wrinkle platform (1-5) is used to prevent wrinkles caused by the shrinkage of the tube end of the internal high-pressure formed part.

3. The anti-wrinkle device for high pressure forming according to claim 1, characterized in that: The connecting boss is provided with an inclined boss, which is arranged on a side of the connecting boss away from the water sealing push block (1), and the outer side of the inclined boss is a lateral guide surface (1-4).

4. The anti-wrinkle device for high pressure forming according to claim 2, characterized in that: The anti-wrinkle platform (1-5) and the guide surface (1-9) are connected via an anti-wrinkle platform transition surface (1-7).

5. The anti-wrinkle device for high pressure forming according to claim 3, characterized in that: The extended boss (1-6), the inclined boss and the connecting boss are all connected to the water sealing transition surface (1-3), and the anti-wrinkle platform (1-5) is arranged flush with the connecting edge of the water sealing transition surface (1-3).

6. The anti-wrinkle device for high pressure forming according to claim 1, characterized in that: A water sealing step (1-1) is provided between the water sealing push block (1) and the connecting boss, and the water sealing step (1-1) is used to fit with the pipe mouth end on one side of the internal high-pressure forming part.

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