Quick positioning device for water-swelling forming die

Abstract

The utility model relates to a water swelling forming die quick assembly and disassembly positioning device, which is located on a water swelling forming machine and comprises a workbench arranged on the water swelling forming machine, a positioning assembly arranged on the workbench, positioning pieces symmetrically arranged on the workbench, a rotating piece arranged on the workbench, the longitudinal section shape of the rotating piece being triangular, one of the positioning pieces being connected with the rotating piece through a first connecting piece, a second connecting piece arranged on the rotating piece, a driving part connected with the rotating piece arranged on the water swelling forming machine, and the driving part being used to drive the rotating piece to make circumferential movement. The water swelling forming die quick assembly and disassembly positioning device drives the rotating piece through the driving part, synchronously drives the two symmetrically arranged positioning pieces to move through the first and second connecting pieces, the linkage design ensures that the two positioning pieces are always synchronous and equidistantly clamped or away from the center, and provides the center-symmetrical clamping force for the die.

Description

Technical Field

[0001] This utility model relates to the field of hydroforming technology, specifically a quick loading and unloading positioning device for hydroforming molds. Background Technology

[0002] Hydraulic forming is an advanced manufacturing technology that uses high-pressure liquid to plastically deform metal blanks within a mold cavity to obtain parts of the desired shape. This technology is widely used in the production of complex curved hollow components in aerospace, automotive manufacturing and other fields. Through precise hydraulic control systems and mold design, the dimensional accuracy and shape consistency of the formed parts can be ensured. This high-precision forming method can produce products with stable quality and reliable performance, meeting various complex and demanding applications.

[0003] In existing technologies, hydroforming molds are usually fixed to the machine tool table by multiple sets of bolts. Each time the mold is changed, the operator needs to use tools to tighten or loosen a large number of bolts one by one. The whole process is time-consuming and labor-intensive, which seriously affects production efficiency. At the same time, relying solely on bolts for positioning makes the positioning accuracy greatly affected by human factors. It is difficult to ensure the precise alignment of the mold and the machine tool centerline, which can easily lead to uneven product wall thickness or out-of-tolerance shape, increasing the scrap rate. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick loading and unloading positioning device for hydroforming molds, which has the advantage of precise positioning and solves the problem of difficulty in ensuring accurate alignment between the mold and the machine tool centerline.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick loading and unloading positioning device for a water-expanding molding die, which is located on a water-expanding molding machine, including a worktable set on the water-expanding molding machine, and a positioning component set on the worktable; The positioning assembly includes positioning components symmetrically arranged on the worktable. A rotating plate is provided on the worktable. The longitudinal cross-sectional shape of the rotating plate is triangular. One of the positioning components is connected to the rotating plate through a first connecting member. A second connecting member is provided on the rotating plate. The hydroforming machine is provided with a driving part connected to the rotating plate, and the driving part is used to drive the rotating plate to make circumferential movements.

[0006] Furthermore, a positioning shaft is provided on the worktable, and one end of the positioning shaft is rotatably connected to the rotating plate through a bearing.

[0007] Furthermore, the positioning member is hinged to the worktable via a hinge seat, the side of the first connecting member away from the positioning member is hinged to the rotating plate via a hinge shaft, and the side of the second connecting member away from the rotating plate is hinged to another positioning member via a hinge shaft.

[0008] Furthermore, the length of the first connector is less than the length of the second connector, and the first connector and the second connector are located on the same vertical plane.

[0009] Furthermore, the driving unit includes a positioning seat disposed on the hydroforming machine, a driving component is rotatably connected to the positioning seat via a rotating shaft, and a third connecting component is disposed at the output end of the driving component.

[0010] Furthermore, the side of the third connector away from the drive member is hinged to the rotating plate via a hinge shaft, and the third connector, the first connector, and the second connector are located on the same vertical plane.

[0011] Furthermore, the workbench is provided with a placement opening, and an electro-permanent magnet chuck is provided on the placement opening for adsorbing the water-expanding molding die.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This quick loading and unloading positioning device for water-expanding molding mold drives a rotating plate through a drive unit, and uses the first and second connecting parts to synchronously drive the movement of two symmetrically arranged positioning parts. This linkage design ensures that the two positioning parts are always synchronously and equidistantly clamped towards or away from the center, providing a centrally symmetrical clamping force for the mold. This effectively avoids the mold from tilting during installation, which achieves rapid and accurate alignment between the mold and the machine tool centerline. This ensures the uniformity of the wall thickness and shape accuracy of the parts during water-expanding molding from the source, and significantly reduces the scrap rate.

[0013] 2. This quick loading and unloading positioning device for water-expanding molding mold directly drives the rotating plate to make circumferential movement through the setting of the drive unit. Then, the rotational movement of the rotating plate is converted into the linear or swinging movement of the two positioning parts by the first and second connecting parts, realizing the clamping and unloading of the mold. This process does not require manual tightening of a large number of bolts. Only the drive unit needs to be controlled to complete the locking and releasing of the mold. The operation is simple and quick, which greatly shortens the mold change time. It is especially suitable for production occasions that require frequent mold changes.

[0014] 3. This rapid loading and unloading positioning device for water-expanding molding molds innovatively integrates an electro-permanent magnet chuck into the worktable placement opening, based on mechanical positioning and clamping. After the positioning component initially centers and clamps the mold, the electro-permanent magnet chuck generates a strong magnetic force when energized, firmly adsorbing the bottom of the mold onto the worktable. This ensures that the mold will not experience any slight displacement when subjected to high-pressure liquid impact, greatly improving the safety and stability of the molding process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram showing the disassembled structure of the permanent magnet chuck and the worktable in this utility model; Figure 3 This is a schematic diagram of the overall structure of the positioning component in this utility model; Figure 4 This is a front view of the rotating plate in this utility model; Figure 5 This is a schematic diagram of the connection structure of the rotating plate, the first connecting member, and the second connecting member in this utility model.

[0016] In the diagram: 100, water-expanding molding machine; 200, worktable; 300, positioning assembly; 301, positioning component; 302, rotating piece; 303, first connecting component; 304, second connecting component; 305, positioning shaft; 306, positioning seat; 307, driving component; 308, third connecting component; 21, placement port; 22, electro-permanent magnet chuck. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0018] Please see Figure 1 and Figure 3 The quick loading and unloading positioning device for the water expansion molding mold in this embodiment is located on the water expansion molding machine 100 and includes a worktable 200 set on the water expansion molding machine 100, and a positioning component 300 is set on the worktable 200. It should be noted that the water expansion molding machine 100 is a common piece of equipment in the prior art, and the usage method and working principle of the water expansion molding machine 100 are well known to those skilled in the art of water expansion molding, and will not be described in detail in this application.

[0019] The positioning assembly 300 includes positioning members 301 symmetrically arranged on the worktable 200. A rotating plate 302 is provided on the worktable 200. The longitudinal cross-sectional shape of the rotating plate 302 is triangular. One of the positioning members 301 is connected to the rotating plate 302 through a first connecting member 303. A second connecting member 304 is provided on the rotating plate 302. The water expansion molding machine 100 is provided with a driving part connected to the rotating plate 302, and the driving part is used to drive the rotating plate 302 to perform circumferential movement.

[0020] In application, when it is necessary to install or fix the mold, the drive unit, such as a pneumatic cylinder or hydraulic cylinder, is activated. The drive unit outputs linear motion, which drives the third connecting member 308 to move through its output end. This, in turn, drives the rotating plate 302, which is hinged to it, to rotate circumferentially around the axis of the positioning shaft 305. Since the longitudinal section of the rotating plate 302 is triangular, it provides a stable and asymmetrical lever arm structure. When the rotating plate 302 rotates, it pulls one of the positioning members 301 connected to it through the shorter first connecting member 303, causing it to swing inward around its own hinge point. At the same time, the rotating plate 302 pushes the other positioning member 301 through the longer second connecting member 304, causing it to swing inward synchronously around its own hinge point. Since the hinge points of the first connecting member 303 and the second connecting member 304 on the rotating plate 302 are at different positions, a linkage system is formed, ensuring that the two positioning members 301 can always move towards the center synchronously, at the same speed, and symmetrically. They simultaneously contact and apply uniform clamping force from both sides of the mold, accurately pushing the mold to and stabilizing it in the center working position of the machine tool, completing high-precision centering and clamping. Example

[0021] The basic content is the same as in Example 1, except that: Please see Figure 3-5 In this embodiment, a positioning shaft 305 is provided on the worktable 200, and one end of the positioning shaft 305 is rotatably connected to the rotating plate 302 through a bearing.

[0022] The positioning member 301 is hinged to the worktable 200 via a hinge seat. The side of the first connecting member 303 away from the positioning member 301 is hinged to the rotating piece 302 via a hinge shaft. The side of the second connecting member 304 away from the rotating piece 302 is hinged to another positioning member 301 via a hinge shaft.

[0023] The length of the first connector 303 is less than the length of the second connector 304, and the first connector 303 and the second connector 304 are located on the same vertical plane.

[0024] It should be noted that this design allows the mechanism to create a force amplification effect when it approaches the clamping position. That is, with a small driving force, a huge clamping force can be generated at the end of the positioning member 301 through the amplification of the rotating plate 302 and the first connecting member 303 and the second connecting member 304 of different lengths. The clamping state is very stable, which effectively prevents the mold from loosening during high pressure molding.

[0025] The drive unit includes a positioning seat 306 mounted on the hydroforming machine 100. A drive component 307 is rotatably connected to the positioning seat 306 via a rotating shaft. A third connector 308 is provided at the output end of the drive component 307.

[0026] It should be noted that the drive component 307 is connected to the control unit, and the control unit controls the piston rod of the drive component 307 to extend and retract at a uniform speed; the control unit and its working principle are well known to those skilled in the art, and will not be described in this embodiment. Preferably, the first drive module 203 is a hydraulic cylinder.

[0027] The side of the third connector 308 away from the drive member 307 is hinged to the rotating piece 302 via a hinge shaft. The third connector 308, the first connector 303, and the second connector 304 are located on the same vertical plane.

[0028] In application, when it is necessary to clamp the mold, the control system activates the drive component 307. The piston rod of the drive component 307 extends or retracts, generating linear motion. This linear motion is transmitted through the third connector 308. Since one end of the third connector 308 is hinged to the output end of the drive component 307 and the other end is hinged to the rotating plate 302, the linear motion of the drive component 307 is converted into the rotational power of the rotating plate 302. When the rotating plate 302 rotates, it pulls one positioning component 301 through the first connector 303 and pushes another positioning component 301 through the second connector 304. Due to the difference in length and hinge point between the first connector 303 and the second connector 304, these two actions are synchronized, forcing the two positioning components 301 to close towards the center in strict synchronization and at equal distances, thus precisely clamping the mold from both sides. When the mold needs to be removed, the drive component 307 moves in the opposite direction, and drives the rotating plate 302 to rotate in the opposite direction through the third connector 308. The rotating plate 302 then drives the two positioning components 301 to swing outward synchronously through the first connector 303 and the second connector 304, thereby releasing the constraint on the mold and completing the release action. Example

[0029] The basic content is the same as in Example 1, except that: Please see Figure 2 In this embodiment, the workbench 200 is provided with a placement opening 21, and an electro-permanent magnet chuck 22 is provided on the placement opening 21 for adsorbing the water-expanding molding mold.

[0030] It should be noted that the electro-permanent magnet chuck 22 is a common component in the existing water expansion molding machine 100 and other machine tools, which plays a fixing role. The usage method and working principle of the electro-permanent magnet chuck 22 are well known to those skilled in the art of water expansion molding, and will not be described in detail in this application.

[0031] When applied, the high-performance permanent magnet material inside the electro-permanent magnet chuck 22 changes the direction of the magnetic circuit under the excitation of the current, generating a strong penetrating magnetic force. The magnetic lines of force pass through the placement port 21 of the worktable 200 and firmly attract the entire bottom plane of the mold. The huge vertical attraction force provided by the electro-permanent magnet chuck 22 prevents the mold from tilting upward or vibrating and shifting slightly under the impact of high-pressure liquid.

[0032] In summary, the working principle of this rapid loading and unloading positioning device for water-expanding molding molds is as follows: The high-performance permanent magnet material inside the electro-permanent magnet chuck 22 changes its magnetic circuit direction under the excitation of current, generating a strong penetrating magnetic force. The magnetic lines of force pass through the placement port 21 of the worktable 200 and firmly attract the entire bottom plane of the mold. The huge vertical attraction force provided by the electro-permanent magnet chuck 22 prevents the mold from tilting upward or vibrating and shifting slightly under the impact of high pressure liquid. When clamping the mold is required, the control system activates the drive component 307. The piston rod of the drive component 307 extends or retracts, generating linear motion. This linear motion is transmitted through the third connector 308. Since one end of the third connector 308 is hinged to the output end of the drive component 307 and the other end is hinged to the rotating plate 302, the linear motion of the drive component 307 is converted into the rotational power of the rotating plate 302. When the rotating plate 302 rotates, it pulls one positioning component 301 through the first connector 303 and pushes another positioning component 301 through the second connector 304. Due to the difference in length and hinge point between the first connector 303 and the second connector 304, these two actions are synchronized, forcing the two positioning components 301 to close towards the center in strict synchronization and at equal distances, thus precisely clamping the mold from both sides. When the mold needs to be removed, the drive component 307 moves in the opposite direction, and drives the rotating plate 302 to rotate in the opposite direction through the third connector 308. The rotating plate 302 then drives the two positioning components 301 to swing outward synchronously through the first connector 303 and the second connector 304, thereby releasing the constraint on the mold and completing the release action.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A quick loading and unloading positioning device for a water-expanding molding die, located on a water-expanding molding machine (100), characterized in that: Includes a worktable (200) set on a hydroforming machine (100), and a positioning component (300) is provided on the worktable (200). The positioning component (300) includes positioning members (301) symmetrically arranged on the worktable (200). A rotating plate (302) is provided on the worktable (200). The longitudinal cross-section of the rotating plate (302) is triangular. One of the positioning members (301) is connected to the rotating plate (302) through a first connector (303). A second connector (304) is provided on the rotating plate (302). The water expansion molding machine (100) is provided with a driving part connected to the rotating plate (302), and the driving part is used to drive the rotating plate (302) to make circumferential movements.

2. The quick loading and unloading positioning device for water-expanding molding mold according to claim 1, characterized in that: The worktable (200) is provided with a positioning shaft (305), one end of which is rotatably connected to the rotating plate (302) via a bearing.

3. The quick loading and unloading positioning device for water-expanding molding mold according to claim 1, characterized in that: The positioning member (301) is hinged to the worktable (200) via a hinge seat. The side of the first connecting member (303) away from the positioning member (301) is hinged to the rotating piece (302) via a hinge shaft. The side of the second connecting member (304) away from the rotating piece (302) is hinged to another positioning member (301) via a hinge shaft.

4. The quick loading and unloading positioning device for water-expanding molding mold according to claim 1, characterized in that: The length of the first connector (303) is less than the length of the second connector (304), and the first connector (303) and the second connector (304) are located on the same vertical plane.

5. The quick loading and unloading positioning device for water-expanding molding mold according to claim 1, characterized in that: The drive unit includes a positioning seat (306) mounted on the hydroforming machine (100), and a drive component (307) is rotatably connected to the positioning seat (306) via a rotating shaft. A third connector (308) is provided at the output end of the drive component (307).

6. The quick loading and unloading positioning device for hydroforming molds according to claim 5, characterized in that: The third connector (308) is hinged to the rotating plate (302) on the side away from the drive member (307) via a hinge shaft. The third connector (308), the first connector (303), and the second connector (304) are located on the same vertical plane.

7. The quick loading and unloading positioning device for water-expanding molding mold according to claim 1, characterized in that: The workbench (200) has a placement opening (21), and an electro-permanent magnet chuck (22) is provided on the placement opening (21) for adsorbing the water-expanding molding mold.

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