A liquid-filled forming and punching processing equipment for sheet metal

Abstract

The application relates to a metal plate liquid-filled forming and punching processing equipment, and belongs to the technical field of metal plate processing, which comprises a punching mechanism, a base and an upper die table capable of sliding relative to each other, the base is provided with a forming groove in the upward direction, the upper die table is provided with a liquid filling channel, the plate is located between the base and the upper die table, the punching mechanism comprises a punching module driving source, the punching module slides on the upper die table, the driving source is used for providing control power for the movement of the punching module, a blanking hole is formed in the base and located at the groove bottom of the forming groove, and the hole depth direction of the blanking hole is consistent with the sliding direction of the punching module. The liquid-filled forming process and the punching processing process are combined, the forming groove on the base is used for positioning the plate workpiece, and the connection process between different processes is omitted; the punching work is carried out in an environment filled with pressure liquid, the chip jumping phenomenon in the stamping process is effectively improved, the generated chippings are discharged out of the base together with the liquid, and the effect of optimizing the on-site environment is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of metal plate processing technology, in particular to a metal plate liquid-filled forming and punching processing equipment. BACKGROUND

[0002] Aluminum alloy plate is an industrial building material. The aluminum alloy material is used in various industries due to its light weight, high strength, strong corrosion resistance, good fatigue performance and many other advantages, and the industries include aviation equipment, decorative curtain wall, packaging, heat exchanger, mounting frame and the like. The plate liquid-filled forming method is a processing technology for forming a curved surface structure of a metal plate. The flexible liquid medium is used to replace part of the traditional rigid mold, so that the blank is plastically deformed according to the pre-designed mold profile under the action of high-pressure liquid, thereby forming a part with a required curved surface shape.

[0003] According to the requirements of product functions or appearances and the like, if a hole structure needs to be processed on the curved surface of the plate, the plate raw material needs to be subjected to liquid-filled forming first, and then punching or carving and other processing technologies are performed on the plate. Once the plate forms a curved surface structure, the positioning accuracy and stability of the plate during cold processing are increased, that is, the processing difficulty is increased. SUMMARY

[0004] In order to improve the above problems, the application provides a metal plate liquid-filled forming and punching processing equipment.

[0005] The metal plate liquid-filled forming and punching processing equipment provided by the application adopts the following technical scheme:

[0006] The metal plate liquid-filled forming and punching processing equipment comprises a base and an upper mold table. The base and the upper mold table slide relative to each other. A forming groove is formed in the side of the base facing the upper mold table. The upper mold table is provided with a liquid-filled channel. The plate is located between the base and the upper mold table. The equipment further comprises a punching mechanism. The punching mechanism comprises a punching module driving source. The punching module slides on the upper mold table. The driving source is used to provide control power for the movement of the punching module. A blanking hole is formed in the base and located at the groove bottom of the forming groove. The hole depth direction of the blanking hole is consistent with the sliding direction of the punching module.

[0007] By adopting the above technical scheme, the liquid-filled forming process and the punching process are combined. The base and the upper mold table used for liquid-filled forming can also serve as objects for positioning the plate during punching processing. The shape and size of the forming groove are highly consistent with the curved surface part of the plate, that is, the positioning accuracy of the plate is high, and the processing difficulty is reduced.

[0008] Preferably, a blanking module is slidably arranged in the blanking hole in the base. The base is further provided with a control member for controlling the movement of the blanking module.

[0009] By adopting the technical scheme, the blanking module can receive the punched waste after punching, and under the action of the control member, the blanking module supports the side of the plate away from the punching module during the liquid filling forming process, thereby reducing the degree of excessive deformation occurring at the position during the liquid filling process.

[0010] Preferably, a pre-deformation groove is formed on the side of the blanking module facing the plate, the groove surface of the pre-deformation groove is located on the side of the forming groove surface away from the upper die table, and the edge of the pre-deformation groove is in contact with and flush with the hole contour of the blanking hole.

[0011] By adopting the technical scheme, after the plate is subjected to liquid filling and pressurization, the plate deforms, the plate surface below the plate is attached to the groove surface of the forming groove, and the part of the plate close to the blanking hole also forms a small-amplitude pre-deformation exceeding the groove surface of the forming groove. The pre-deformation formed at this stage will cause the plate surface to first produce bending deformation along the designed punching contour, and the organizational stress generated at the deformation position can bring certain convenience to the subsequent punching process, reduce the stamping pressure, and improve the forming quality.

[0012] Preferably, an auxiliary protrusion is fixedly connected in the pre-deformation groove on the blanking module, and the surface of the auxiliary protrusion away from the groove bottom of the pre-deformation groove is flush with the groove surface of the forming groove.

[0013] By adopting the technical scheme, the auxiliary protrusion is used to expand the contact area of the plate and the punching module, thereby improving the uniformity of the stress of the blanking module and reducing the pressure damage degree of the edge of the pre-deformation groove.

[0014] Preferably, a liquid discharge channel is formed on the hole wall of the blanking hole on the base, a liquid discharge groove is formed on the side wall of the punching module, the liquid discharge groove surrounds the punching module, and when the punching module moves into the blanking hole, the liquid discharge groove is in communication with the forming groove and the liquid discharge channel at the same time.

[0015] By adopting the technical scheme, the liquid remaining on the plate surface during the liquid filling forming process can be discharged through the liquid discharge groove and the liquid discharge channel during the punching process.

[0016] Preferably, a positioning block is slidingly arranged on the base, a limiting hole for the positioning block to insert is formed on the side surface of the blanking module, a control screw is rotatably connected to the base, the axis of the control screw is consistent with the sliding direction of the positioning block, the control screw is threadedly connected with the positioning block, the control member is a control spring, one end of the control spring is fixedly connected with the base, and the other end is fixedly connected with the blanking module.

[0017] By adopting the technical scheme, after the positioning block is inserted into the limiting hole, the blanking module cannot easily slide along the blanking hole, that is, the position control of the blanking module is realized, and when the positioning block is withdrawn from the limiting hole, the control spring can drive the blanking module to reset through the elastic force of the control spring.

[0018] Preferably, a pressure relief hole is formed through the upper die table, and a pressure control sliding block is slidably connected in the pressure relief hole.

[0019] Preferably, the driving source is a driving oil cylinder, the driving oil cylinder is fixedly connected with the upper die table, a piston rod of the driving oil cylinder is fixedly connected with the punching module, the transmission assembly comprises a transmission gear, a linking gear and a transmission rack, the pressure control sliding block and the punching module are both provided with a sawtooth structure, the transmission gear and the linking gear are both rotatably connected with the upper die table, the transmission rack is slidably connected with the upper die table, the sawtooth on the punching module is engaged with the transmission gear, the sawtooth on the pressure control sliding block is engaged with the linking gear, and the transmission gear and the linking gear are both engaged with the transmission rack.

[0020] By adopting the technical scheme, when punching is performed, the punching module continuously penetrates into the forming groove filled with liquid, and at the same time, the pressure control sliding block can move away from the plate in the pressure relief hole, so that a space for liquid to flow into is formed in the pressure relief hole, the liquid pressure in the forming groove is reduced, and thus the working pressure of the driving source is reduced.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. By arranging the punching module and the blanking hole, the liquid filling forming process and the punching process are combined, the base and the upper die table used for liquid filling forming can also be used as objects for positioning the plate during punching, the shape and size of the forming groove are highly matched with the curved surface part of the plate, that is, the positioning accuracy of the plate is high, and the moving and positioning steps for the plate are omitted, and the overall processing efficiency is improved.

[0023] 2. By arranging the pressure relief hole, the pressure control sliding block and the transmission assembly, when punching is performed, the punching module continuously penetrates into the forming groove filled with liquid, and at the same time, the pressure control sliding block can move away from the plate in the pressure relief hole, so that a space for liquid to flow into is formed in the pressure relief hole, the liquid pressure in the forming groove is reduced, and thus the working pressure of the driving source is reduced.

[0024] 3. By setting the liquid discharge groove and the liquid discharge channel, the punching work is carried out in an environment full of pressure liquid, effectively improving the chip jumping phenomenon in the punching process. During the liquid discharge process, the flowing liquid with high pressure also flushes the hole wall of the hole contour structure and the blanking hole of the plate, so that the floating burr metal chips formed here flow out with the liquid, which has the effect of optimizing the on-site environment. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a metal plate liquid-filled forming punching processing equipment in the embodiment of the present application.

[0026] Figure 2 is a structural cross-sectional schematic diagram of a punching mechanism in the embodiment of the present application.

[0027] Figure 3 is a structural schematic diagram of a transmission assembly and a blanking module in the embodiment of the present application.

[0028] Figure 4 is a structural schematic diagram of the punching module after punching is completed in the embodiment of the present application.

[0029] Explanation of reference signs: 1, rack; 11, upper die table; 111, pressure relief hole; 112, liquid filling channel; 12, base; 121, blanking hole; 122, liquid discharge channel; 123, forming groove; 2, punching mechanism; 21, punching module; 211, liquid discharge groove; 22, blanking module; 221, pre-deformation groove; 222, auxiliary protrusion; 223, limiting hole; 23, pressure control sliding block; 24, control member; 25, driving source; 3, transmission assembly; 31, transmission gear; 32, transmission rack; 33, connecting gear; 4, positioning block; 41, control screw; 42, driving motor; 5, plate. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The present application will be further described in detail.

[0031] The embodiment of the present application discloses a metal plate liquid-filled forming punching processing equipment, which comprises a rack 1, an upper die table 11, a base 12, a punching mechanism 2, a blanking module 22 and a transmission assembly 3. Figure 1 and 2As shown, it comprises a rack 1, a base 12 is installed on the rack 1 and is connected with an upper die table 11 in a vertical sliding manner, a forming groove 123 for liquid forming of the plate 5 is formed on the base 12, and a liquid filling channel 112 is formed on the upper die table 11, and the port of the liquid filling channel 112 is located on the side of the upper die table 11 facing the base 12. After the upper die table 11 slides to the base 12 and clamps the plate 5 together with the base 12, liquid can be filled between the upper die table 11 and the plate 5 through the liquid filling channel 112, and under the pressure of the liquid, the plate 5 is finally formed into a curved surface structure corresponding to the shape of the forming groove 123. The upper die table 11 is also provided with a punching mechanism 2 for punching the plate 5.

[0032] As shown in Figure 1 , 2 and 3, the punching mechanism 2 comprises a driving source 25, a punching module 21, a blanking module 22 and a pressure control sliding block 23, the punching module 21 slides on the upper die table 11, a blanking hole 121 is formed on the base 12 and located at the groove bottom of the forming groove 123, the blanking module 22 slides in the blanking hole 121, the sliding directions of the punching module 21 and the blanking module 22 and the hole depth direction of the blanking hole 121 are all vertical directions, and the cross-sectional profiles of the punching module 21, the blanking module 22 and the blanking hole 121 in the vertical direction are consistent, all being the design shape of the hole structure on the plate 5. The driving source 25 is used to provide control power for the movement of the punching module 21, and in the embodiment, the driving source 25 is a driving oil cylinder, the cylinder body of the driving oil cylinder is fixedly connected with the upper die table 11, and the end of the piston rod thereof is fixedly connected with the punching module 21.

[0033] As shown in Figure 2 , 3As shown in Figs. 4, the base 12 is further provided with a control member 24 for controlling the position and movement state of the blanking module 22 during the working process of the device. The control member 24 is a control spring in this embodiment, the extension direction of the control spring is the hole depth direction of the blanking hole 121, one end of the control spring is fixedly connected with the base 12, and the other end of the control spring is fixedly connected with the blanking module 22. The blanking module 22 is provided with a pre-deformation groove 221 on the side facing the plate 5, the groove surface of the pre-deformation groove 221 is located on the side of the groove surface of the forming groove 123 away from the upper die table 11, and in the natural state, the edge of the pre-deformation groove 221 is in contact with and flush with the hole opening contour of the blanking hole 121. After the plate 5 is subjected to liquid filling and pressurization, the plate 5 deforms, the plate surface below the plate 5 is attached to the groove surface of the forming groove 123, and the part of the plate 5 close to the blanking hole 121 also forms a small amplitude pre-deformation beyond the groove surface of the forming groove 123. The pre-deformation formed in this stage will make the plate surface of the plate 5 first produce bending deformation along the designed punching contour, and the organizational stress generated at the deformation place can bring certain convenience to the subsequent punching process, reduce the punching pressure and improve the forming quality. The blanking module 22 is integrally formed with an auxiliary protrusion 222 in the middle of the pre-deformation groove 221, in the state that the edge of the pre-deformation groove 221 is in contact with and flush with the hole opening contour of the blanking hole 121, the surface of the side of the auxiliary protrusion 222 away from the groove bottom of the pre-deformation groove 221 is flush with the groove surface of the forming groove 123; in the punching process, after the lower end of the punching module 21 moves to the hole opening of the blanking hole 121, the lower end abuts against the side of the plate 5 away from the blanking module 22, the auxiliary protrusion 222 is used for expanding the contact area of the plate 5 and the punching module 21, thereby improving the stress uniformity of the blanking module 22 and reducing the pressure damage degree of the edge of the pre-deformation groove 221.

[0034] As Figure 2 , 3As shown in Figure 4, a vertically extending pressure relief hole 111 is also provided on the upper die table 11. The pressure control slider 23 slides along the pressure relief hole 111. A transmission assembly 3 for controlling the sliding of the pressure control slider 23 is provided on the upper die table 11. During the punching process, the punching module 21 continuously penetrates into the forming groove 123 filled with liquid, while at the same time, the pressure control slider 23 can move away from the plate 5 in the pressure relief hole 111, so that a space for liquid to flow into is formed in the pressure relief hole 111, reducing the liquid pressure in the forming groove 123, thereby reducing the working pressure of the driving cylinder. The transmission assembly 3 includes a transmission gear 31, a connecting gear 33, and a transmission rack 32. The transmission gear 31 and the connecting gear 33 are both rotatably connected to the upper die table 11, and the rotation axes of the two are parallel to each other and are both horizontal. The transmission rack 32 is slidably connected to the upper die table 11, and the transmission rack 32 is simultaneously engaged with the transmission gear 31 and the connecting gear 33. Both the pressure-control slider 23 and the punching module 21 are provided with a serrated structure. The serrations on the punching module 21 are engaged with the transmission gear 31, and the serrations on the pressure-control slider 23 are engaged with the connecting gear 33. The force is transmitted in sequence by the punching module 21, the transmission gear 31, the transmission rack 32, the connecting gear 33 and the pressure-control slider 23. When the control cylinder drives the punching module 21 to move downward, the pressure-control slider 23 moves upward synchronously. The movement speeds of the two are equal, and the cross-sectional area of ​​the pressure-control slider 23 is equal to the cross-sectional area of ​​the punching module 21. Therefore, during the punching process, the hydraulic pressure between the upper die table 11 and the plate 5 almost maintains an overall stable state.

[0035] like Figure 2 、 3 As shown in Figure 4, a drainage channel 122 is provided on the base 12 and on the wall of the blanking hole 121, and the end of the drainage channel 122 away from the blanking hole 121 is directly connected to the external space; a drainage groove 211 is provided on the side wall of the punching module 21, and the drainage groove 211 surrounds the punching module 21. When the punching module 21 moves into the blanking hole 121 to complete the punching process, the drainage groove 211 crosses the opening of the blanking hole 121 and connects the forming groove 123 and the drainage channel 122. That is, at this time, the liquid between the upper mold table 11 and the plate 5 can be discharged from the equipment through the forming groove 123, the blanking hole 121 and the drainage channel 122 in turn; in this process, the flowing liquid with higher pressure also flushes the opening contour structure of the plate 5 and the wall of the blanking hole 121, so that the floating burr metal chips formed here flow out with the liquid.

[0036] like Figure 2 、 3As shown in Figs. 4, the base 12 is provided with a positioning block 4 sliding in the horizontal direction, two limiting holes 223 for the positioning block 4 to insert are formed in the side of the blanking module 22, and the two limiting holes 223 are arranged in the height direction; the base 12 is further rotationally connected with a control screw 41, the axis of the control screw 41 is consistent with the sliding direction of the positioning block 4, and the control screw 41 is threadedly connected with the positioning block 4, the base 12 is further provided with a driving motor 42 for driving the control screw 41 to rotate, and the output shaft of the driving motor 42 is coaxially fixedly connected with the control screw 41. When the control spring is in the natural state, the positioning block 4 can be directly inserted into the lower limiting hole 223, at this time, the positioning effect of the positioning block 4 on the blanking module 22 can reduce the movement amount of the blanking module 22 in the liquid filling process; when the punching module 21 moves downward to the stroke end point, the positioning block 4 can be directly inserted into the upper limiting hole 223, at this time, the positioning effect of the positioning block 4 on the blanking module 22 can make the liquid between the upper die table 11 and the plate 5 still be discharged through the blanking hole 121 and the liquid discharge channel 122 even if the punching module 21 is removed from the blanking hole 121.

[0037] The implementation principle of the metal plate liquid filling forming and punching processing equipment in the embodiment of the application is as follows:

[0038] During the liquid filling forming process, the control spring is in the natural state, the control pressure sliding block 23 and the lower end of the blanking module 22 are flush with the lower surface of the upper die table 11. After the liquid filling is completed and the pressure maintaining is finished, the positioning block 4 is extracted from the lower limiting hole 223, the driving oil cylinder is started, and the punching processing in the equipment is completed, and the liquid between the upper die table 11 and the base 12 is also discharged from the base 12 through the blanking hole 121 and the liquid discharge channel 122; after the liquid is completely discharged, the upper die table 11 moves away from the base 12, and the operator can take out the processed plate and the waste material punched.

[0039] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A metal plate liquid-filled forming punching processing device, comprising a base (12) and an upper die table (11), wherein the base (12) and the upper die table (11) slide relative to each other, a forming groove (123) is provided on the side of the base (12) facing the upper die table (11), a liquid-filled channel (112) is provided on the upper die table (11), a plate (5) is located between the base (12) and the upper die table (11), and is characterized in that: The punching mechanism (2) further comprises a punching module (21) drive source (25), the punching module (21) slides on the upper die table (11), the drive source (25) is used to provide control power for the movement of the punching module (21), a blanking hole (121) is provided on the base (12) and at the bottom of the forming groove (123), and the hole depth direction of the blanking hole (121) is consistent with the sliding direction of the punching module (21); A blanking module (22) is slidably provided on the base (12) and located in the blanking hole (121), and a control member (24) for controlling the movement of the blanking module (22) is also provided on the base (12); The blanking module (22) is provided with a pre-deformation groove (221) on a side facing the plate (5); the groove surface of the pre-deformation groove (221) is located on the side of the groove surface of the forming groove (123) facing away from the upper die table (11); the edge of the pre-deformation groove (221) contacts and is flush with the orifice contour of the blanking hole (121); A drainage channel (122) is provided on the base (12) and on the wall of the blanking hole (121); a drainage groove (211) is provided on the side wall of the punching module (21); the drainage groove (211) surrounds the punching module (21); when the punching module (21) moves into the blanking hole (121), the drainage groove (211) is simultaneously communicated with the forming groove (123) and the drainage channel (122); A positioning block (4) is slidably provided on the base (12), a limiting hole (223) for inserting the positioning block (4) is provided on the side of the blanking module (22), a control screw (41) is rotatably connected to the base (12), the axis of the control screw (41) is consistent with the sliding direction of the positioning block (4), the control screw (41) is threadedly connected to the positioning block (4), and the control member (24) is a control spring, one end of the control spring is fixedly connected to the base (12), and the other end is fixedly connected to the blanking module (22); A pressure relief hole (111) is provided through the upper die table (11), a pressure control slider (23) is slidably connected in the pressure relief hole (111), and a transmission assembly (3) for controlling the sliding of the pressure control slider (23) is provided on the upper die table (11).

2. The metal sheet liquid forming punching processing equipment according to claim 1, characterized in that: An auxiliary protrusion (222) is fixedly connected to the blanking module (22) and located in the pre-deformation groove (221); a side surface of the auxiliary protrusion (222) away from the bottom of the pre-deformation groove (221) is flush with the groove surface of the forming groove (123).

3. The metal sheet liquid forming punching processing equipment according to claim 1, characterized in that: The driving source (25) is a driving oil cylinder, which is fixedly connected to the upper die table (11). The piston rod of the driving oil cylinder is fixedly connected to the punching module (21). The transmission assembly (3) includes a transmission gear (31), a connecting gear (33) and a transmission rack (32). The pressure control slider (23) and the punching module (21) are both provided with a sawtooth structure. The transmission gear (31) and the connecting gear (33) are both rotatably connected to the upper die table (11). The transmission rack (32) is slidably connected to the upper die table (11). The sawtooth on the punching module (21) is meshed with the transmission gear (31). The sawtooth on the pressure control slider (23) is meshed with the connecting gear (33). The transmission gear (31) and the connecting gear (33) are both meshed with the transmission rack (32).

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