CN213997381U

CN213997381U - Hydraulic forming device

Info

Publication number: CN213997381U
Application number: CN202022878199.1U
Authority: CN
Inventors: 刘继伟; 迟达; 孙鹏; 裴立梅
Original assignee: Tsinghua University; Suzhou Automotive Research Institute of Tsinghua University
Current assignee: Tsinghua University; Suzhou Automotive Research Institute of Tsinghua University
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-08-20
Anticipated expiration: 2030-12-02

Abstract

The utility model relates to the hydraulic technical field, in particular to a hydraulic forming device, which comprises a hydraulic cavity shell, wherein the hydraulic cavity shell is provided with a holding cavity which is formed by inwards concave arrangement, one side of the hydraulic cavity shell, which is provided with the holding cavity, is hermetically connected with a plate piece to be punched, and the hydraulic cavity shell is provided with a liquid inlet pipe communicated with the holding cavity; the female die is provided with a forming cavity, the female die is connected with one side of the hydraulic cavity shell, which is provided with the containing cavity, and the sheet material piece is clamped between the hydraulic cavity shell and the female die; the hydraulic chamber housing is configured to: when stamping the panel piece, hydraulic fluid gets into the holding chamber through the feed liquor pipe to exert pressure to the panel piece, make the panel piece produce the deformation and with the shaping chamber laminating shaping. The utility model discloses a hydraulic fluid acts as the terrace die, only need to change the die when processing different kinds of parts can.

Description

Hydraulic forming device

Technical Field

The utility model relates to a hydraulic pressure technical field especially relates to a hydraulic forming device.

Background

The light weight and the processing flexibility of the automobile are the mainstream directions of the current automobile technology development, the light weight can save materials and energy, and the processing technology flexibility can shorten the processing period and reduce the production cost. The hydraulic forming is a typical process combining light weight and processing flexibility, so the application of the hydraulic forming process in the automobile industry is more and more extensive, the traditional hydraulic forming process simultaneously uses a solid male die and a solid female die which are matched with each other to process a plate, the die cost is high, the preparation period is long, the shape of a die for producing parts is fixed after equipment is installed and debugged, once the type of the parts is changed, the solid male die and the solid female die are often required to be designed, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic forming device has reduced the cost of punching press part development and production, has solved when hydraulic forming, needs the problem of redesign solid terrace die when changing the part of processing.

To achieve the purpose, the utility model adopts the following technical proposal:

a hydroforming assembly comprising:

the hydraulic cavity shell is provided with an accommodating cavity which is formed by inwards concave arrangement, one side of the hydraulic cavity shell, which is provided with the accommodating cavity, is hermetically connected with a plate piece to be punched, and the hydraulic cavity shell is provided with a liquid inlet pipe communicated with the accommodating cavity;

the female die is provided with a forming cavity, the female die is connected with one side, provided with the accommodating cavity, of the hydraulic cavity shell, and the sheet material part is clamped between the hydraulic cavity shell and the female die;

the hydraulic chamber housing is configured to: when the plate piece is stamped, hydraulic liquid enters the accommodating cavity through the liquid inlet pipe and is pressed by the plate piece, so that the plate piece deforms and is attached to and molded by the molding cavity.

Preferably, the upper end of the hydraulic cavity shell is provided with a first vent hole communicated with the accommodating cavity, and a sealing element capable of sealing the first vent hole is arranged on the first vent hole.

Preferably, the female die is provided with a plurality of second vent holes, and the second vent holes are communicated with the forming cavity.

Preferably, the die further comprises a die base, and the die is arranged in the die base in a penetrating mode.

As preferred, the die base includes interconnect's installation department and connecting portion, the installation department has well cavity, the die is worn to establish the installation department in the well cavity, the die upper end with sheet material spare butt, first connecting hole has been seted up to connecting portion, seted up on the hydraulic pressure chamber shell with the second connecting hole that first connecting hole was centering, first mounting passes the second connecting hole first connecting hole will the hydraulic pressure chamber shell with the die base is connected.

Preferably, the mounting portion is provided with a plurality of third vent holes.

Preferably, a cushion block is arranged on the bottom surface of the mounting part of the female die base, and the female die is arranged on the cushion block.

Preferably, the bottom surface of the mounting part is provided with a first connecting groove, and the cushion block is provided with a first connecting protrusion matched with the first connecting groove.

Preferably, a stud is arranged on one side, away from the accommodating cavity, of the hydraulic cavity shell, a third connecting hole matched with the stud is formed in the sealing element, when the sealing element blocks the first vent hole, the stud penetrates through the third connecting hole, and a nut is screwed on the stud to connect the sealing element to the hydraulic cavity shell.

Preferably, the sealing element is provided with an external thread, the inner wall of the first vent hole is provided with an internal thread matched with the external thread, and when the sealing element blocks the first vent hole, the sealing element is screwed with the first vent hole.

The utility model has the advantages that:

the utility model provides a hydraulic forming device, which comprises a hydraulic cavity shell and a concave die, wherein the hydraulic cavity shell is provided with an accommodating cavity which is inwards concavely arranged, is hermetically connected with a sheet material piece to be punched, a forming cavity is arranged on the female die, the sheet material piece is clamped between the female die and a hydraulic cavity shell, a liquid inlet pipe communicated with the accommodating cavity is arranged on the hydraulic cavity shell, hydraulic liquid is discharged into the accommodating cavity from the liquid inlet pipe, when the containing cavity is filled with hydraulic liquid, the pressure is continuously applied, the hydraulic liquid can apply pressure to the plate piece, so that the plate piece is deformed and is jointed and molded with the molding cavity, when the hydraulic forming device provided by the utility model is used for forming the sheet parts and processing parts of different types, because the hydraulic fluid is equivalent to a male die, when the panel piece is formed, only the female die needs to be replaced, and compared with the traditional hydraulic forming equipment with a solid female die and a solid male die, the male die does not need to be designed.

Drawings

FIG. 1 is a sectional view showing the overall structure of the hydroforming apparatus of the present invention;

fig. 2 is an overall structure split view of the hydraulic molding apparatus of the present invention.

In the figure:

1. a hydraulic chamber housing; 11. a liquid inlet pipe; 12. a first vent hole; 13. an accommodating cavity; 14. a stud; 15. a second connection hole;

2. a sheet member; 21. a U-shaped groove;

3. a female die; 31. a molding cavity; 32. a second vent hole;

4. a female die base; 41. an installation part; 42. a connecting portion; 411. a third vent hole; 412. a first connection groove; 421. a first connection hole;

5. cushion blocks; 51. a first connecting projection; 52. a second connecting groove;

6. a seal member; 61. a third connection hole;

7. a nut;

8. a first fixing member.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-2, the present invention provides a hydraulic forming apparatus, which mainly comprises a hydraulic chamber shell 1 and a female die 3, wherein the hydraulic chamber shell 1 has a concave accommodating chamber 13 formed therein, and is hermetically connected to a sheet material 2 to be stamped, the female die 3 is provided with a forming chamber 31, the sheet material 2 is clamped between the female die 3 and the hydraulic chamber shell 1, the hydraulic chamber shell 1 is provided with a liquid inlet pipe 11 communicated with the accommodating chamber 13, and hydraulic liquid is discharged from the liquid inlet pipe 11 into the accommodating chamber 13, when the accommodating chamber 13 is filled with hydraulic liquid, the hydraulic liquid is continuously pressurized, and the hydraulic liquid applies pressure to the sheet material 2, so that the sheet material 2 is deformed and is attached to the forming chamber 31, and through the hydraulic forming apparatus 2 provided by the present invention, when processing different types of sheet materials, since the hydraulic liquid is equivalent to a male die, when the sheet material 2 is formed, only the female die 3 needs to be replaced, compared with the traditional hydraulic forming equipment of the solid female die and the solid male die, the male die does not need to be redesigned. Furthermore, the hydraulic fluid filled in the accommodating chamber 13 during hydraulic forming can be selected from water, hydraulic oil or hydraulic emulsion according to actual needs, and is not limited too much.

Specifically, the upper end of the hydraulic chamber shell 1 is provided with a first vent hole 12 communicated with the accommodating chamber 13, the first vent hole 12 is provided with a sealing element 6 capable of sealing the first vent hole 12, when hydraulic liquid is discharged into the accommodating chamber 13, the sealing element 6 is removed, smooth outflow of air in the accommodating chamber 13 can be ensured, hydraulic liquid flows in quickly, when the accommodating chamber 13 is filled with hydraulic liquid, the sealing element 6 is installed, and hydraulic liquid in the hydraulic forming process is prevented from leaking out of the first vent hole 12.

Specifically, one side of the hydraulic cavity shell 1, which is far away from the accommodating cavity 13, is provided with a stud 14, the sealing element 6 is provided with a third connecting hole 61 which is matched with the stud 14, when the sealing element 6 blocks the first vent hole 12, the stud 14 penetrates through the third connecting hole 61, the nut 7 is screwed on the stud 14 to connect the sealing element 6 to the hydraulic cavity shell 1, in the embodiment, the nut 7 is a bolt, when the sealing element 6 is damaged, the disassembly and replacement are convenient, and the sealing element 6 is a rubber plug.

In other embodiments, the sealing member 6 is provided with an external thread, the inner wall of the first vent hole 12 is provided with an internal thread hole matched with the external thread, when the sealing member 6 blocks the first vent hole 12, the sealing member 6 is screwed in the threaded hole, and a rubber sealing gasket can be added between the sealing member 6 and the first vent hole 12, so that the installation and the disassembly are more convenient and time-saving during use.

Specifically, a plurality of second vent holes 32 have been seted up on die 3, second vent hole 32 and shaping chamber 31 intercommunication, when hydraulic forming, laminating to shaping chamber 31 surface is pressed from both sides to sheet material spare 2, if remain the air between sheet material spare 2 and the shaping chamber 31, can cause the influence to the shaping of sheet material spare 2, make final fashioned product surface unevenness, second vent hole 32 can ensure that the air between sheet material spare 2 and the shaping chamber 31 discharges smoothly at hydraulic forming's in-process, final shaping product molding is smooth-going. In the present embodiment, the second ventilation hole 32 is provided in plurality.

Specifically, the hydroforming device that this embodiment provided still includes die base 4, and die 3 wears to establish in die base 4, restricts die 3's position at hydroforming's in-process, prevents that die 3 from leading to the change of the shaping position of sheet material spare 2 at hydroforming's in-process lateral shifting, makes final shaping product surface deformation.

Furthermore, the female die base 4 comprises a mounting portion 41 and a connecting portion 42 connected with each other, the mounting portion 41 has a hollow cavity, the female die 3 is inserted into the hollow cavity of the mounting portion 41 to limit the female die 3 from moving laterally, the upper end of the female die 3 abuts against the sheet material 2 to ensure that the sheet material 2 is directly attached to the forming cavity 31 during hydraulic forming, the connecting portion 42 has a first connecting hole 421, the hydraulic cavity housing 1 has a second connecting hole 15 aligned with the first connecting hole 421, the first fixing member 8 passes through the second connecting hole 15 and the first connecting hole 421 to connect the hydraulic cavity housing 1 and the female die base 4 to form a closed space to ensure that hydraulic fluid cannot leak out, the hydraulic cavity housing 1 and the female die base 4 are locked by the first fixing member 8, the sheet material 2 is further fixed on the basis that the weight of the own weight of the hydraulic cavity housing 1 presses the sheet material 2, in this embodiment, the first fixing piece 8 is a bolt, further, a U-shaped groove 21 is formed in the circumferential direction of the plate piece 2, when the first fixing piece 8 locks the hydraulic cavity shell 1 and the die base 4, the first fixing piece 8 sequentially passes through the second connecting hole 15, the U-shaped groove 21 and the first connecting hole 421 and then is locked, and the plate piece 2 is allowed to move towards the forming cavity 31 in the forming process of the plate piece 2.

Specifically, the mounting portion 41 of the female die 3 is provided with a plurality of third vent holes 411, the second vent holes 32 discharge excess air into the female die base 4, and the third vent holes 411 discharge air out of the hydraulic forming device.

Specifically, the bottom surface of the installation part 41 of the female die base 4 is provided with a cushion block 5, the lower end of the female die 3 is provided with a third connecting groove, the female die is installed on the cushion block 5 through the third connecting groove, the height position of the female die 3 in the installation part 41 is adjusted through the cushion block 5, the upper surface of the female die 3 is leveled to the surface of the connecting part 42 of the female die base 4, and therefore after the hydraulic cavity shell 1 and the plate piece 2 are installed, the female die 3 is enabled to be abutted to the plate piece 2.

Further, the bottom surface of the mounting portion 41 is provided with a first connecting groove 412, the cushion block 5 is provided with a first connecting protrusion 51 matched with the first connecting groove 412, the cushion block 5 can be directly clamped in the first connecting groove 412, so that the cushion block 5 cannot move transversely in the hydraulic forming process, the cushion block 5 is far away from one side of the first connecting protrusion 51, and a second connecting groove 52 is formed in the cushion block 5, when the plurality of cushion blocks 5 are used for adjusting the groove height, the plurality of cushion blocks 5 can be stacked through the first connecting protrusion 51 and the second connecting groove 52 on the cushion block 5.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A hydroforming assembly, comprising:

the stamping die comprises a hydraulic cavity shell (1), wherein an accommodating cavity (13) formed by inwards concave arrangement is formed in the hydraulic cavity shell (1), one side, provided with the accommodating cavity (13), of the hydraulic cavity shell (1) is hermetically connected with a plate piece (2) to be stamped, and a liquid inlet pipe (11) communicated with the accommodating cavity (13) is formed in the hydraulic cavity shell (1);

the die (3) is provided with a forming cavity (31), the die (3) is connected with one side, provided with the accommodating cavity (13), of the hydraulic cavity shell (1), and the plate piece (2) is clamped between the hydraulic cavity shell (1) and the die (3);

the hydraulic chamber housing (1) is configured to: when the plate piece (2) is stamped, hydraulic liquid enters the accommodating cavity (13) through the liquid inlet pipe (11) and is pressed on the plate piece (2), so that the plate piece (2) deforms and is attached to the forming cavity (31) for forming.

2. The hydroforming device according to claim 1, characterized in that the upper end of the hydraulic chamber housing (1) is provided with a first vent hole (12) communicating with the receiving chamber (13), and the first vent hole (12) is provided with a sealing element (6) capable of closing the first vent hole (12).

3. The hydroforming device according to claim 1, characterized in that the female die (3) has a plurality of second venting holes (32) formed therein, the second venting holes (32) communicating with the forming cavity (31).

4. The hydroforming device according to claim 1, further comprising a die base (4), wherein the die (3) is inserted into the die base (4).

5. The hydroforming device according to claim 4, characterized in that die base (4) includes interconnect's installation department (41) and connecting portion (42), installation department (41) have well cavity, die (3) wear to establish installation department (41) in the well cavity, die (3) upper end with sheet material spare (2) butt, first connecting hole (421) have been seted up in connecting portion (42), set up on hydraulic chamber shell (1) with second connecting hole (15) that first connecting hole (421) are centering mutually, first mounting (8) pass second connecting hole (15) first connecting hole (421) will hydraulic chamber shell (1) with die base (4) are connected.

6. The hydroforming apparatus according to claim 5, characterized in that the mounting portion (41) has a plurality of third vent holes (411) formed therein.

7. The hydroforming apparatus according to claim 5, characterized in that the bottom surface of the mounting portion (41) of the die base (4) is provided with a spacer (5), and the die (3) is provided on the spacer (5).

8. The hydroforming apparatus according to claim 7, wherein the bottom surface of the mounting portion (41) defines a first coupling groove (412), and the spacer (5) defines a first coupling protrusion (51) that engages with the first coupling groove (412).

9. The hydroforming device according to claim 2, characterized in that a stud (14) is provided on a side of the hydraulic chamber housing (1) facing away from the receiving chamber (13), a third connecting hole (61) is provided on the seal (6) and engages with the stud (14), when the seal (6) blocks the first vent hole (12), the stud (14) is inserted into the third connecting hole (61), and a nut (7) is screwed to the stud (14) to connect the seal (6) to the hydraulic chamber housing (1).

10. The hydroforming device according to claim 2, characterized in that the sealing element (6) is provided with an external thread and the first venting opening (12) is provided on its inner wall with an internal thread that cooperates with the external thread, the sealing element (6) being screwed to the first venting opening (12) when the sealing element (6) blocks the first venting opening (12).