Edge pressing structure of hydraulic forming die

Abstract

The utility model provides a hydraulic forming die edge pressing structure which comprises a working table, a water supply channel and a lower die are arranged on the working table, the water supply channel penetrates through the lower die, a lifting table is arranged at the telescopic end of a hydraulic machine on the working table, an upper die is arranged at the bottom of the lifting table, and multiple sets of adjusting columns are annularly arranged on the working table. The multiple sets of adjusting columns are arranged on the workbench in a liftable and penetrating mode and abut against the lower die, an adjusting mechanism connected with the adjusting columns is arranged on the workbench, and the adjusting columns are driven to ascend and descend through the adjusting mechanism. The edge pressing structure can drive the lower die to deviate to be parallel to the upper die, so that the upper die can be closely attached to the lower die when pressed downwards, the situation that the forming effect is reduced due to liquid leakage in the hydraulic forming process is effectively prevented, and the defective rate is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic forming, in particular to a hydraulic forming die pressing edge structure. Background Art

[0002] Hydroforming refers to a shaping technology that uses liquid or mold to shape the workpiece, also known as hydroforming. It is a method of using liquid pressure instead of rigid punches or dies to perform plastic processing on sheet materials, such as bending, drawing, bulging of flat blanks, bulging of space blank shapes, etc.

[0003] Compared with traditional forming technologies such as stamping and welding, hydraulic forming is a new metal forming technology that can form various complex parts and has the advantages of good surface quality of parts, reduced processes, simplified molds and no need for special stamping equipment.

[0004] Hydroforming was initially used in aerospace, automobile manufacturing and other fields. With the continuous development and maturity of technology, it is now gradually being used in the civilian manufacturing field.

[0005] For example, the Chinese utility model patent with patent number 200920196261.X provides a hydraulic press upper one-time forming pressure vessel head shrinking die, which retains a large gap between the shrinking die and the shape correction slider when in use, so that the blank can be smoothly squeezed into the shrinking die, and the head will not accumulate material in the longitudinal direction, so that the shrinking is achieved, the structure is simple, the size accuracy of the formed parts is high, and the forming efficiency is high. However, after long-term use or when the existing hydraulic forming die is offset during installation, a certain gap will be formed between the upper die and the lower die, which will cause the liquid to leak out of the gap easily, affecting the forming effect. Therefore, in view of this, a hydraulic forming die edge structure is proposed to solve the above technical problems. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model proposes a hydraulic forming mold edge structure to solve the technical problem raised in the above background technology that the existing hydraulic forming mold may be offset after long-term use or during installation, resulting in a certain gap between the upper mold and the lower mold, which may cause liquid to leak out of the gap and affect the molding effect.

[0007] To achieve the above purpose, the utility model provides the following technical solution, a hydraulic forming mold edge structure, including:

[0008] A workbench is provided with a water supply channel;

[0009] A lower mold is arranged on the workbench, and the water supply channel runs through the lower mold;

[0010] A lifting platform is arranged on the telescopic end of the hydraulic press on the workbench, and an upper mold is arranged at the bottom of the lifting platform;

[0011] A plurality of adjusting columns are arranged in a circumferential direction and are all liftable and pass through the workbench and abut against the lower mold; and

[0012] The adjusting mechanism is provided with the same number of groups as the adjusting columns, and is arranged on the workbench and connected with the adjusting columns to drive the adjusting columns to rise and fall.

[0013] In a preferred embodiment, a sealing sleeve is provided around the water supply channel, the sealing sleeve is arranged in the lower mold and fits therewith, and the sealing sleeve is made of a flexible material.

[0014] In a preferred embodiment, a limiting hole is provided at the bottom of the lower mold, the end of the adjusting column is inserted into the limiting hole and abuts against the lower mold, and the diameter of the limiting hole is larger than the diameter of the adjusting column.

[0015] In a preferred embodiment, the adjustment mechanism includes:

[0016] A lifting column is arranged at the bottom of the adjusting column, a positioning frame is arranged on the workbench, the lifting column is arranged in the positioning frame so as to be liftable, and a wedge-shaped groove is provided on the lifting column;

[0017] A wedge-shaped block, one end of which is clamped in the wedge-shaped groove, and the inclined surface of which abuts against the inclined surface of the wedge-shaped groove. A slide groove is provided on the workbench, and the wedge-shaped block is slidably clamped in the slide groove; and

[0018] A driving assembly is arranged on the workbench and connected to the wedge block to drive the wedge block to slide.

[0019] In a preferred embodiment, the drive assembly comprises:

[0020] A threaded column is rotatably disposed on the workbench along its axis and is threadedly connected thereto, and the wedge block is rotatably connected to one end of the threaded column; and

[0021] An adjusting wheel is arranged at the other end of the threaded column.

[0022] In a preferred embodiment, a sealing ring is provided on the working surface of the lower mold.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The telescopic end of the hydraulic press can be controlled to extend and retract to drive the lifting platform and the upper mold at its bottom to descend, and the sheet to be formed can be pressed together with the lower mold, and then high-pressure liquid can be injected into the cavity between the lower mold and the sheet through the water supply channel to form the sheet. When the upper mold or the lower mold is offset due to errors in the installation process or after long-term use, one or more groups of adjustment columns can be driven up and down by the adjustment mechanism to drive the lower mold to deviate and make it parallel to the upper mold, so that the upper mold can fit closely with the lower mold when pressed down, thereby effectively preventing liquid leakage during the hydraulic forming process from reducing the forming effect and effectively reducing the defective product rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0026] Figure 1 A cross-sectional view of a hydraulic forming molded edge structure provided by the utility model;

[0027] Figure 2 for Figure 1 A magnified schematic diagram of area a in the middle;

[0028] Figure 3 This is a schematic diagram of the installation structure of a wedge block in a hydraulic forming molded edge structure of the utility model;

[0029] Reference numerals:

[0030] 101, workbench; 102, water supply channel; 103, lower mold; 104, sealing sleeve; 105, limiting hole; 106, positioning frame; 107, slide groove; 108, sealing ring;

[0031] 201, lifting column; 202, adjusting column; 203, wedge-shaped groove;

[0032] 301, threaded column; 302, adjusting wheel; 303, wedge block;

[0033] 401. Lifting platform; 402. Upper mold. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0035] Example:

[0036] like Figure 1As shown, the utility model provides a hydraulic forming die edge structure, including a workbench 101, a water supply channel 102 and a lower mold 103 are arranged on the workbench 101, the water supply channel 102 runs through the lower mold 103, and a lifting platform 401 is arranged at the telescopic end of the hydraulic press on the workbench 101, and an upper mold 402 is arranged at the bottom of the lifting platform 401. When in use, the sheet is placed on the lower mold 103, and the lifting platform 401 and the upper mold 402 at the bottom are driven to descend by controlling the telescopic end of the hydraulic press, and the peripheral side of the sheet is pressed and fixed in cooperation with the lower mold 103, and then high-pressure liquid is injected into the cavity between the lower mold 103 and the sheet through the water supply channel 102, so that the sheet is deformed for hydraulic forming.

[0037] like Figure 2 , 3 As shown, in this embodiment, a plurality of groups of adjusting columns 202 are arranged in an annular direction on the workbench 101, and the adjusting columns 202 abut against the lower mold 103. The workbench 101 is provided with adjusting mechanisms with the same number of groups as the adjusting columns 202, and the adjusting mechanisms are connected to the adjusting columns 202 to drive the adjusting columns 202 to rise and fall. The adjusting mechanisms include a lifting column 201 at the bottom of the adjusting column 202, a positioning frame 106 is provided on the workbench 101, and the lifting column 201 is arranged in the positioning frame 106 so as to be liftable, a wedge-shaped groove 203 is provided on the lifting column 201, one end of the wedge block 303 is clamped in the wedge-shaped groove 203, and its inclined surface abuts against the inclined surface of the wedge-shaped groove 203, a slide groove 107 is provided on the workbench 101, and the wedge block 303 is slidably clamped in the slide groove 107, and a driving component connected to the wedge block 303 is provided on the workbench 101, and the wedge block 303 is driven to slide by the driving component. The driving assembly includes a threaded column 301 rotatably arranged on the workbench 101 and screwed thereto, a wedge block 303 is rotatably connected to one end of the threaded column 301 , and an adjusting wheel 302 is arranged at the other end of the threaded column 301 .

[0038] The threaded column 301 can be driven to rotate by rotating the adjusting wheel 302, and then the threaded column 301 can be driven to slide along its axis through the threaded movement to drive the wedge block 303 to slide. During the sliding process, the wedge block 303 drives the lifting column 201 to rise and fall through the contact between its top inclined surface and the inclined surface of the wedge groove 203, and then controls the adjustment column 202 to rise and fall to abut against one end of the lower mold 103, thereby fine-tuning the angle between the lower mold 103 and the workbench 101, so that the lower mold 103 is parallel to the upper mold 402, thereby eliminating the gap between the lower mold 103 and the upper mold 402 during the pressing process, effectively preventing liquid leakage, ensuring that the hydraulic pressure in the pressing cavity reaches the pressing standard, and improving the pressing efficiency.

[0039] The slope of the wedge block 303 is preferably between 20° and 35°. By controlling the change in the slope of the inclined surface of the wedge block 303, the smaller the slope of the inclined surface of the wedge block 303, the more precise the control of the lifting height of the adjustment column 202. At the same time, it can effectively reduce the axial force on the threaded column 301, avoid thread slippage and damage to the threaded column 301, and improve the stability and service life of the structure.

[0040] like Figure 1 , 2 As shown, in this embodiment, a sealing sleeve 104 is provided around the water supply channel 102, and the sealing sleeve 104 is arranged in the lower mold 103 and fits therewith, and the sealing sleeve 104 is made of a flexible material. The arrangement of the sealing sleeve 104 can make the internal cavity of the lower mold 103 form a sealed state with the sheet material when the position is fine-tuned, so as to adapt to the position change of the lower mold 103. A limiting hole 105 is provided at the bottom of the lower mold 103, and the end of the adjusting column 202 is inserted into the limiting hole 105 and abuts against the lower mold 103. The diameter of the limiting hole 105 is larger than the diameter of the adjusting column 202, and is used to adapt to the lifting and lowering of the adjusting column 202 and the position change of the lower mold 103, thereby improving the practicality of the structure. And it is only necessary to adjust the lower mold 103 to be parallel to the upper mold 402, and the contact surface between the lower mold 103 and the upper mold 402 is a conical surface, which can adapt to the lateral displacement of the lower mold 103 along its plane.

[0041] like Figure 1 As shown, in this embodiment, a sealing ring 108 is provided on the working surface of the lower mold 103. The sealing effect can be further improved by the provision of the sealing ring 108, and the leakage of the high-pressure liquid can be further prevented.

[0042] Specific usage and beneficial effects of the utility model:

[0043] The telescopic end of the hydraulic press can be controlled to extend and retract to drive the lifting platform 401 and the upper mold 402 at the bottom thereof to descend, and the lower mold 103 can be used to press the sheet material to be formed, and then high-pressure liquid can be injected into the cavity between the lower mold 103 and the sheet material through the water supply channel 102 to form the sheet material. When the upper mold 402 or the lower mold 103 is offset due to errors in the installation process or after long-term use, the threaded column 301 can be driven to rotate by rotating the adjusting wheel 302. The threaded column 301 drives the wedge block 303 to slide in the slide groove 107 during the rotation process, and then one or more groups of adjusting columns 202 are driven to rise and fall through the cooperation of the wedge block 303 and the wedge groove 203, so as to drive the lower mold 103 to deviate and make it parallel to the upper mold 402, so that the upper mold 402 can be closely fitted with the lower mold 103 when pressed down, thereby effectively preventing liquid leakage during the hydraulic forming process from reducing the forming effect and effectively reducing the defective product rate.

[0044] The basic principle and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A hydraulic forming die edge structure, characterized in that: Included are: A workbench (101) is provided with a water supply channel (102); A lower mold (103) is arranged on the workbench (101), and the water supply channel (102) runs through the lower mold (103); A lifting platform (401) is arranged at the telescopic end of the hydraulic press on the workbench (101), and an upper mold (402) is arranged at the bottom of the lifting platform (401); A plurality of adjusting columns (202) are arranged in a circular direction and are all movably mounted on the workbench (101) and abut against the lower mold (103); and The adjusting mechanism is provided with the same number of groups as the adjusting columns (202), and is arranged on the workbench (101) and connected to the adjusting columns (202) to drive the adjusting columns (202) to rise and fall.

2. A hydraulic forming die edge structure according to claim 1, characterized in that: A sealing sleeve (104) is provided around the water supply channel (102); the sealing sleeve (104) is arranged in the lower mold (103) and fits therewith; the sealing sleeve (104) is made of a flexible material.

3. A hydraulic forming die edge structure according to claim 1, characterized in that: A limiting hole (105) is provided at the bottom of the lower mold (103), the end of the adjusting column (202) is inserted into the limiting hole (105) and abuts against the lower mold (103), and the diameter of the limiting hole (105) is greater than the diameter of the adjusting column (202).

4. A hydraulic forming die edge structure according to claim 1, characterized in that: The regulating mechanism comprises: A lifting column (201) is arranged at the bottom of the adjusting column (202); a positioning frame (106) is arranged on the workbench (101); the lifting column (201) is arranged in the positioning frame (106) so as to be liftable; and a wedge-shaped groove (203) is provided on the lifting column (201); A wedge-shaped block (303) has one end clamped in the wedge-shaped groove (203), and its inclined surface abuts against the inclined surface of the wedge-shaped groove (203); a slide groove (107) is provided on the workbench (101), and the wedge-shaped block (303) is slidably clamped in the slide groove (107); and A driving assembly is arranged on the workbench (101) and connected to the wedge block (303) to drive the wedge block (303) to slide.

5. A hydraulic forming die edge structure according to claim 4, characterized in that: The drive assembly comprises: A threaded column (301) is rotatably disposed along its axis on the workbench (101) and is screwed thereto, and the wedge block (303) is rotatably connected to one end of the threaded column (301); and The adjusting wheel (302) is arranged at the other end of the threaded column (301).

6. The hydraulic forming die edge structure according to claim 1, characterized in that: The working surface of the lower mold (103) is provided with a sealing ring (108).

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