Alloy sheet pressing device

Abstract

The utility model relates to the field of alloy sheet stamping devices, and discloses an alloy sheet pressing device which comprises a base, a stand column fixed to the base, a main cylinder fixed to the top end of the stand column, a movable beam installed on the stand column and a stamping die, and the movable beam is located between the main cylinder and the base and fixedly connected with the output end of the main cylinder; the stamping die comprises an upper die assembly and a lower die assembly, the upper die assembly is fixedly connected to the bottom of the movable beam, a plurality of upper punches are fixed to the bottom of the upper die assembly, upper female dies are arranged at the bottoms of the upper punches, the upper female dies are sunken inwards, and the edges of the upper female dies are chamfered; the lower die assembly is fixed to the base, forming cavities and lower punches are arranged on the lower die assembly and correspond to the upper punches, and auxiliary cylinders are fixedly connected to the bottoms of the lower punches. According to the scheme, the upper punch and the lower punch are arranged in a combined mode, the lower punch is limited to be fixedly connected with the output end of the auxiliary cylinder of the hydraulic machine, the auxiliary cylinder is started to drive the lower punch to rapidly eject the alloy sheet after the alloy sheet is formed, and rapid ejection of the product can be achieved even if the alloy sheet is thick.

Description

Technical Field

[0001] This invention relates to the field of alloy sheet stamping equipment, and more specifically to an alloy sheet pressing device. Background Technology

[0002] Alloy sheets are precision thin sheets formed by high-pressure pressing of metal powder or composite materials, and are widely used in electronic devices, new energy vehicle battery components, and other fields. With the upgrading of industrial demands, alloy sheets are gradually developing towards greater thickness and higher density, which places higher demands on the demolding efficiency and forming integrity of the pressing process. In traditional pressing processes, if the thickness of the alloy sheet increases, its demolding resistance increases significantly. Existing equipment, due to insufficient ejection power or sluggish operation, is prone to jamming during the ejection process or even workpiece breakage, severely restricting the production efficiency and yield of thick-walled alloy sheets.

[0003] Most current mainstream alloy sheet pressing devices employ a hydraulic press frame structure. A main hydraulic cylinder drives a movable beam to move the upper die and complete the pressing action, while the lower die typically uses a fixed design or a simple ejection mechanism. For thicker alloy sheets, rapid and smooth ejection after pressing is necessary to avoid internal stress accumulation or surface damage. However, existing devices often rely on a single hydraulic cylinder or mechanical ejector rod for ejection. Their ejection force and response speed are insufficient to match the high demolding resistance required for thick alloy sheets, resulting in long ejection times or requiring multiple steps. Furthermore, the poor timing coordination between the ejection action and the main cylinder's return stroke easily leads to ejection timing deviations, further exacerbating frictional damage between the workpiece and the die, and affecting the integrity of the product edges.

[0004] Therefore, developing an alloy sheet pressing device with high ejection efficiency not only effectively makes up for the shortcomings of existing technologies, but also meets the requirements of ejection efficiency and non-destructive operation for thick alloy sheets, which is of great significance for improving the production efficiency and quality of alloy sheets. Summary of the Invention

[0005] The present invention aims to provide an alloy sheet pressing device to solve the technical problem that existing alloy sheet pressing devices cannot quickly eject large-sized alloy sheets.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an alloy sheet pressing device, comprising a base, a column fixed on the base, a main cylinder fixed on the top of the column, a movable beam mounted on the column, and a stamping die; the movable beam is located between the main cylinder and the base and is fixedly connected to the output end of the main cylinder; the stamping die comprises an upper die assembly and a lower die assembly; the upper die assembly is fixedly connected to the bottom of the movable beam; a plurality of upper punches are fixedly mounted on the bottom of the upper die assembly; the bottom of each upper punch is provided with an upper concave die; the upper concave die is recessed inward and has rounded edges; the lower die assembly is fixedly mounted on the base; each upper punch on the lower die assembly is provided with a forming cavity and a lower punch; the bottom of each lower punch is fixedly connected to an auxiliary cylinder.

[0007] The principle of this scheme is:

[0008] In this design, the upper punch in the stamping die is fixedly connected to the output end (i.e., the movable beam) of the main hydraulic cylinder, while the lower punch is fixedly connected to the output end of the auxiliary hydraulic cylinder. The main and auxiliary cylinders of the hydraulic cylinder drive the upper and lower punches respectively, thus completing the "pressing" and "ejection" actions in the alloy sheet production process. Secondly, by setting multiple upper punches, this design facilitates batch forming of alloy sheets, effectively improving the efficiency of alloy sheet pressing. Furthermore, by limiting the inward concave shape of the upper die at the bottom of the upper punch and rounding the edges, the upper edge of the pressed alloy sheet is rounded, meaning the diameter of the upper edge is smaller than the diameter of the lower edge. This effectively reduces ejection resistance and frictional damage between the alloy sheet and the inner wall of the die during ejection, improving the forming quality of the alloy sheet.

[0009] The advantages of this solution are:

[0010] 1. Compared to existing alloy sheet pressing devices that cannot quickly eject large-sized alloy sheets, this solution combines an upper punch and a lower punch, and fixes the lower punch to the output end of the hydraulic press auxiliary cylinder. After forming, starting the auxiliary cylinder can drive the lower punch to quickly eject the alloy sheet, even if the alloy sheet is thick.

[0011] 2. The device in this solution fixes the key structures of the stamping die, namely the upper punch and the main cylinder of the hydraulic cylinder, and the lower punch and the auxiliary cylinder of the hydraulic cylinder, so that by setting the alternating strokes of the main cylinder and the auxiliary cylinder of the hydraulic cylinder, the alloy sheet forming process of "the upper punch pressing first and the lower punch ejecting later" can be controlled. This is convenient for control and can also effectively avoid the phenomenon in the prior art where the poor timing coordination between the ejection action and the return stroke of the main cylinder easily causes the ejection timing deviation. This reduces frictional damage between the workpiece and the die and also improves the ejection efficiency.

[0012] 3. This solution sets up several upper punches, and each upper punch is equipped with a forming cavity and a lower punch, which facilitates the batch forming of alloy sheet products and effectively improves the efficiency of alloy sheet pressing and forming.

[0013] 4. This solution limits the inward indentation of the upper die at the bottom of the upper punch and rounds the edges, ensuring that the upper edge of the pressed alloy sheet has a rounded corner, meaning the diameter of the upper edge is smaller than the diameter of the lower edge. This effectively reduces ejection resistance and improves ejection efficiency. Furthermore, because the upper diameter of the alloy sheet is smaller than the lower diameter, frictional damage between the alloy sheet and the inner wall of the die during ejection is reduced, thus effectively improving the forming quality of the alloy sheet. This alloy sheet pressing device is particularly suitable for forming thick alloy sheets, improving ejection efficiency and effectively avoiding frictional damage during ejection, thereby enhancing the forming quality of the alloy sheet.

[0014] Preferably, as an improvement, the upper mold assembly includes an upper template, an upper punch fixing ring, an upper punch base, and a plurality of upper punches. The upper punches and the upper punch base are integrally formed. The upper punch base is fixedly connected to the upper punch fixing ring, the upper punch fixing ring is fixedly connected to the upper template, and the upper template is fixedly connected to the movable beam.

[0015] Technical benefits: The above-mentioned configuration facilitates the fixing of the upper punch to the movable beam. The one-piece molded upper punch base and several upper punches facilitate rapid positioning of the upper punch, forming cavity, and lower punch.

[0016] Preferably, as an improvement, the bottom of the movable beam is provided with several T-shaped fixing grooves, and the upper template is provided with several mounting holes. External square head bolts and nuts are used to fix the upper template in the T-shaped fixing grooves of the movable beam.

[0017] Technical benefits: The above-mentioned setup in this solution allows for the use of several T-shaped fixing slots to accommodate the fixing of upper mold components of different sizes, and the threaded connection also facilitates the maintenance or replacement of upper mold components during production.

[0018] Preferably, as an improvement, the lower die assembly includes a support platform, a worktable, a die ring, and a lower punch. The die ring is fixedly connected to the worktable, the worktable is fixedly connected to the support platform, and the support platform is fixed to the base. The die ring has a forming cavity corresponding to the position of the upper punch, and the lower punch is gap-connected to the position of the forming cavity on the worktable. The bottom of the lower punch is fixedly connected to the output end of the hydraulic press auxiliary cylinder.

[0019] Technical benefits: The above-mentioned setup facilitates effective fixation of the lower mold assembly. Furthermore, the corresponding arrangement of the forming cavity and lower punch with the upper punch facilitates the forming and ejection of the alloy sheet.

[0020] Preferably, as an improvement, the worktable is fixedly connected to the support platform via a support column, and a hydraulic auxiliary cylinder is installed between the worktable and the support platform, with the output end of the auxiliary cylinder fixedly connected to the bottom of the lower punch.

[0021] Technical effect: The above-mentioned configuration facilitates the auxiliary cylinder to drive the lower punch to eject the pressed alloy sheet.

[0022] Preferably, as an improvement, the base is provided with a receiving platform, which is located around the workbench; the receiving platform includes a table plate and a support rod, a pad is fixed on the table plate, a receiving plate is provided on the pad plate, and a control console is provided inside the receiving plate; the control console is electrically connected to the hydraulic press, and the control console is provided with a start button and a stop button.

[0023] Technical Benefits: This solution, with the above-described setup, allows operators to easily start or stop production by pressing buttons on the control panel. An additional receiving platform around the workbench houses the control panel, facilitating operator control of the hydraulic press; simultaneously, the receiving platform can temporarily hold the pressed alloy sheets.

[0024] Preferably, as an improvement, the platform is provided with pressure plates on both sides, the pressure plates are fixed to the base by a support frame, and the pressure plates and the support frame are threaded together.

[0025] Technical effect: With the above settings, the angle and height of the pressure plate can be adjusted by rotating the upper and lower nuts, thereby achieving the pressing and loosening of the receiving platform.

[0026] Preferably, as an improvement, the number of receiving platforms is greater than or equal to two, and the receiving platforms are arranged around the workbench.

[0027] Technical benefits: The above-mentioned setup allows operators to easily operate the alloy sheet at close range and temporarily place it.

[0028] Preferably, as an improvement, it also includes a batching unit, which includes a batching platform, a weighing platform, and a dust collection hood covering the weighing platform, with the dust collection hood's pipes connected to a dust collector.

[0029] Technical benefits: The above-mentioned setup facilitates the timely collection and handling of dust generated during the weighing of raw material powders, thereby improving the cleanliness and safety of the production workshop.

[0030] Preferably, as an improvement, a lower die is provided between the worktable and the die ring, and the forming cavity is located inside the lower die; the worktable is provided with a first groove corresponding to the outer shape of the lower die, and the die ring is provided with a second groove corresponding to the outer shape of the lower die, and the first groove and the second groove form a die cavity for fixing the lower die.

[0031] Technical Benefits: This solution, with the above-described configuration, allows for easy replacement of the die material based on the alloy sheet material, thus adapting to the molding of alloy sheet products of different materials. After setting the die, the die ring can be fixed to a specific material, avoiding the need for custom-made die rings due to insufficient die ring hardness after changing the alloy sheet raw material, which would increase costs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the alloy sheet pressing device in Embodiment 1 of the present invention.

[0033] Figure 2 for Figure 1 Enlarged view of section A.

[0034] Figure 3 The diagram shows the structure of the lower mold assembly in embodiments 1-3 of the present invention.

[0035] Figure 4 This is a schematic diagram of the weighing unit in Embodiment 3 of the present invention.

[0036] Figure 5 This is a schematic diagram of the lower die structure in Embodiment 4 of the present invention. Detailed Implementation

[0037] The following detailed description illustrates the specific implementation method:

[0038] The reference numerals in the accompanying drawings include: base 11, column 12, movable beam 13, T-shaped fixing groove 131, square head bolt 132, main cylinder 14, auxiliary cylinder 15, upper template 21, upper punch fixing ring 22, upper punch base 23, upper punch 24, upper die 241, support platform 31, worktable 32, support column 321, die ring 33, lower punch 34, forming cavity 35, lower die 351, platform 41, support rod 42, pressure plate 43, support frame 431, pad 44, receiving plate 45, control console 46, start button 461, stop button 462, batching platform 5, weighing cup 51, weighing platform 6, dust cover 7.

[0039] Example 1

[0040] This solution provides an alloy sheet pressing device, basically as shown in the attached figure. Figures 1-3 As shown, it includes a base 11, a column 12 fixed on the base 11, a main cylinder 14 fixed at the top of the column 12, a movable beam 13 installed on the column 12, a stamping die and a receiving platform. The movable beam 13 is located between the main cylinder 14 and the base 11 and is fixedly connected to the output end of the main cylinder 14.

[0041] The stamping die includes an upper die assembly and a lower die assembly. The upper die assembly is fixedly connected to the bottom of the movable beam 13, and several upper punches 24 are fixedly attached to the bottom of the upper die assembly. The lower die assembly is fixed on the base 11, and each upper punch 24 on the lower die assembly is provided with a forming cavity 35 and a lower punch 34. The lower punch 34 is fixedly connected to the output end of the hydraulic press auxiliary cylinder 15.

[0042] The upper mold assembly includes an upper template 21, an upper punch retaining ring 22, an upper punch base 23, and several upper punches 24. The upper punches 24 and the upper punch base 23 are integrally formed. The upper punch base 23 is fixedly connected to the upper punch retaining ring 22 (not shown in the figure) by screws. The upper punch retaining ring 22 is fixedly connected to the upper template 21 (not shown in the figure) by screws. The upper template 21 is fixedly connected to the movable beam 13 by screws. For reference, the bottom of the movable beam 13 has several T-shaped fixing slots 131, and the upper template 21 has several mounting holes. External square head bolts 132 and nuts cooperate to fix the upper template 21 within the T-shaped fixing slots 131 of the movable beam 13. Specifically, during fixing, the head of the external square head bolt 132 is inserted into the T-shaped fixing slot 131, the bolt extends out of the fixing slot and passes through the mounting hole on the upper template 21, and then cooperates with the nut to fix the upper template 21 within the T-shaped fixing slot 131. For reference, four parallel T-shaped fixing slots 131 are provided on the movable beam 13, and mounting holes are opened near the four corners of the upper template 21. The upper template 21 is firmly fixed to the movable beam 13 by four external square head bolts 132. Figure 2 As shown, the upper punch 24 has an upper die 241 at its bottom. The upper die 241 is recessed inward and has rounded edges to facilitate the formation of an alloy sheet with a diameter that is smaller at the top and larger at the bottom, thus facilitating the ejection of the alloy sheet after pressing. The inner wall of the die at the bottom of the upper punch 24 is decorated with lettering and patterns according to the design requirements of the alloy sheet.

[0043] The lower die assembly includes a support platform 31, a worktable 32, a die ring 33, and a lower punch 34. The die ring 33 is fixedly connected to the worktable 32 by screws. The worktable 32 is fixedly connected to the support platform 31, which is fixed to the base 11. For reference, the bottom of the support platform 31 is welded to the base 11. The die ring 33 has a forming cavity 35 corresponding to the position of the upper punch 24. The lower punch 34 is gap-connected to the worktable 32 at the position corresponding to the forming cavity 35. The bottom of the lower punch 34 is fixedly connected to the output end of the hydraulic press auxiliary cylinder 15. For reference, as shown... Figure 3 As shown, the worktable 32 is fixedly connected to the support platform 31 via the support column 321. A hydraulic press auxiliary cylinder 15 is installed between the worktable 32 and the support platform 31 (for reference, the auxiliary cylinder 15 is welded to the top surface of the support platform 31). The output end of the auxiliary cylinder 15 is fixedly connected to the bottom of the lower punch 34, which facilitates the auxiliary cylinder 15 to drive the lower punch 34 to move up and down, and facilitates the lower punch 34 to eject the pressed alloy sheet.

[0044] As a reference, in this embodiment, the number of upper punch 24, forming cavity 35 and lower punch 34 is 3 to 6, which facilitates the batch forming of alloy sheets.

[0045] The receiving platform includes a platform 41 and a support rod 42. Pressure plates 43 are provided on both sides of the platform 41. The pressure plates 43 are fixed to the base 11 via a support frame 431. For reference, the pressure plates 43 and the support frame 431 are threaded together. Rotating the upper and lower nuts adjusts the angle and height of the pressure plates 43, thereby achieving the pressing and releasing of the receiving platform. A pad 44 is fixed on the platform 41, and a receiving tray 45 is provided on the pad 44. The receiving tray 45 can be used to place the control console 46 and temporarily hold the pressed alloy sheet.

[0046] The control console 46 is electrically connected to the hydraulic press. The control console 46 is equipped with a start button 461 and a stop button 462. For reference, in this embodiment, the control console 46 is equipped with a stop button 462 in the middle and start buttons 461 on both sides. The operator needs to press the start button 461 at the same time to start the hydraulic press to complete the pressing work.

[0047] The specific implementation process is as follows:

[0048] Prepare the raw materials needed for pressing the alloy sheet in advance and pour them into the forming cavity 35. Simultaneously press both start buttons 461 to start the hydraulic press: the beam plate drives the upper punch 24 to descend rapidly—the beam plate descends slowly to apply pressure—pressure is maintained for a certain period of time—pressure is released—the beam plate drives the upper punch 24 to return rapidly, while the lower punch 34 pushes the alloy sheet upward—the alloy sheet is removed—the lower punch 34 retracts. This completes one alloy sheet pressing process. Then, feed material into the forming cavity 35 again and press both start buttons 461 to start the next cycle.

[0049] Example 2

[0050] To further enhance operational safety, this embodiment differs from Embodiment 1 in that it has two or more receiving platforms, which are arranged around the workbench 32. Specifically, this embodiment has two receiving platforms, located on both sides of the workbench 32. Each receiving platform is equipped with a control console 46. In actual operation, two operators need to simultaneously press four start buttons 461 to start the hydraulic press, further enhancing operational safety.

[0051] Example 3

[0052] To further improve the efficiency and safety of the ingredient preparation stage, this embodiment differs from Embodiment 1 in that it also includes an ingredient preparation unit, such as... Figure 4 As shown, the batching unit includes a batching platform 5, a weighing platform 6, and a dust collector hood covering the weighing platform 6. The dust collector hood's piping is connected to a dust collector. A certain amount of alloy raw material is poured into the weighing cup 51, accurately weighed by the weighing platform 6, and then neatly arranged on the batching platform 5, ready for alloy sheet pressing. Dust generated during the weighing process is collected by the negative pressure of the dust collector hood above the weighing platform 6 and then transported to the dust collector for dust removal.

[0053] Example 4

[0054] To further improve the pressing effect of the alloy sheet, the difference between this embodiment and Embodiment 3 is that, as Figure 5 As shown, a lower die 351 is provided between the worktable 32 and the die ring 33, and the forming cavity 35 is located inside the lower die 351; the worktable 32 is provided with a first groove corresponding to the external shape of the lower die 351, and the die ring 33 is provided with a second groove corresponding to the external shape of the lower die 351. The first groove and the second groove form a die cavity for fixing the lower die 351.

[0055] In this embodiment, by adding a lower die 351, the material of the lower die 351 can be changed according to the material of the alloy sheet, thereby adapting to the molding of alloy sheet products of different materials. The die ring 33 can be fixed to a certain material, avoiding the need to re-customize the die ring 33 due to insufficient hardness after changing the raw material of the alloy sheet, thus avoiding increased costs.

[0056] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An alloy sheet pressing device, characterized in that: The system includes a base, a column fixed to the base, a main cylinder fixed to the top of the column, a movable beam mounted on the column, and a stamping die. The movable beam is located between the main cylinder and the base and is fixedly connected to the output end of the main cylinder. The stamping die includes an upper die assembly and a lower die assembly. The upper die assembly is fixedly connected to the bottom of the movable beam. Several upper punches are fixed to the bottom of the upper die assembly. The bottom of each upper punch is provided with an upper concave die, which is recessed inward and has rounded edges. The lower die assembly is fixed to the base. Each upper punch on the lower die assembly is provided with a forming cavity and a lower punch. The bottom of each lower punch is fixedly connected to a secondary cylinder.

2. The alloy sheet pressing device according to claim 1, characterized in that: The upper mold assembly includes an upper template, an upper punch fixing ring, an upper punch base, and several upper punches. The upper punches and the upper punch base are integrally formed. The upper punch base is fixedly connected to the upper punch fixing ring, the upper punch fixing ring is fixedly connected to the upper template, and the upper template is fixedly connected to the movable beam.

3. The alloy sheet pressing device according to claim 2, characterized in that: The bottom of the movable beam is provided with several T-shaped fixing grooves, and the upper template is provided with several mounting holes. External square head bolts and nuts are used to fix the upper template in the T-shaped fixing grooves of the movable beam.

4. The alloy sheet pressing device according to claim 1, characterized in that: The lower die assembly includes a support platform, a worktable, a die ring, and a lower punch. The die ring is fixedly connected to the worktable, the worktable is fixedly connected to the support platform, and the support platform is fixed to the base. The die ring has a forming cavity corresponding to the position of the upper punch, and the lower punch is connected to the worktable at a gap corresponding to the position of the forming cavity. The bottom of the lower punch is fixedly connected to the output end of the hydraulic press auxiliary cylinder.

5. The alloy sheet pressing device according to claim 4, characterized in that: The worktable is fixedly connected to the support platform via a support column. The auxiliary cylinder is located between the worktable and the support platform, and the output end of the auxiliary cylinder is fixedly connected to the bottom of the lower punch.

6. The alloy sheet pressing device according to claim 1, characterized in that: The base is provided with a receiving platform, which is located around the workbench; the receiving platform includes a table plate and a support rod, a pad is fixed on the table plate, a receiving plate is provided on the pad plate, and a control console is provided inside the receiving plate; the control console is electrically connected to the hydraulic press, and the control console is provided with a start button and a stop button.

7. The alloy sheet pressing device according to claim 6, characterized in that: The platform has pressure plates on both sides, which are fixed to the base by a support frame. The pressure plates and the support frame are threaded together.

8. The alloy sheet pressing apparatus according to claim 7, characterized in that: The number of receiving platforms is greater than or equal to two, and the receiving platforms are arranged around the workbench.

9. The alloy sheet pressing device according to claim 1, characterized in that: It also includes a batching unit, which includes a batching platform, a weighing platform, and a dust collection hood covering the weighing platform. The dust collection hood is connected to a dust collector via pipes.

10. The alloy sheet pressing device according to claim 4, characterized in that: A lower die is provided between the worktable and the die ring, and the forming cavity is located inside the lower die. The worktable is provided with a first groove corresponding to the outer shape of the lower die, and the die ring is provided with a second groove corresponding to the outer shape of the lower die. The first groove and the second groove form a die cavity for fixing the lower die.

Images