Positive and reverse fine finishing dual-purpose oil press

Abstract

The application discloses a positive and reverse fine finishing production dual-purpose oil press, which comprises a rack, a workbench arranged on the rack, an upper driving oil cylinder and a lower driving oil cylinder arranged on the upper and lower sides of the workbench, an upper die connected with the upper driving oil cylinder, the upper driving oil cylinder driving the upper die to press downward in the direction of the workbench, a pusher and a lower die being detachably connected to the upper driving oil cylinder, and the lower driving oil cylinder driving the lower die to move upward and combine with the upper die through the pusher. The application provides a positive and reverse fine finishing production dual-purpose oil press, which drives the upper die and the lower die to stamp the steel back through the upper driving oil cylinder and the lower driving oil cylinder, realizes the positive fine finishing and reverse fine finishing process of the steel back, meets the precision requirement, and has the advantages of reducing the manufacturing cost of products.

Description

Technical Field

[0001] This invention relates to the field of hardware processing machinery technology, and in particular to a hydraulic press that can be used for both forward and reverse precision finishing production. Background Technology

[0002] Products such as brake disc steel backings are typically manufactured using mechanical stamping presses. The steel backing is placed on a mold, and the mold stamps it to create the desired structure. Traditional equipment for stamping brake disc steel backings is a mechanical stamping press. The traditional stamping process for steel backings using a mechanical stamping press mainly involves four steps: beveling, punching, pin removal, and finishing. During the finishing process, the stamping press requires a hydraulic system and cylinders to assist in achieving the precision required for this step. However, due to structural limitations, it cannot meet the requirements of both forward and reverse finishing processes. Using a complex precision stamping machine to meet the precision requirements also increases the manufacturing cost of the product. Summary of the Invention

[0003] The purpose of this invention is to provide a dual-purpose hydraulic press for forward and reverse finishing production. By using an upper drive cylinder and a lower drive cylinder to drive an upper mold and a lower mold respectively to stamp the steel backing, the press can perform forward and reverse finishing processes on the steel backing, meet the precision requirements, and reduce the manufacturing cost of the product.

[0004] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a dual-purpose hydraulic press for both forward and reverse precision finishing production, including a frame, a worktable mounted on the frame, and an upper drive cylinder and a lower drive cylinder located on the upper and lower sides of the worktable. The upper drive cylinder is connected to an upper mold and drives the upper mold to press down toward the worktable. The lower drive cylinder is detachably connected to a pusher and a lower mold and drives the lower mold to move upward and close with the upper mold through the pusher.

[0005] This invention employs the aforementioned technical solution, where an upper drive cylinder drives the upper die to press down, and a lower drive cylinder drives the lower die to move upward, thereby achieving the stamping and forming of the steel backing. During forward and reverse finishing, different push-up components and the lower die are disassembled and replaced to achieve both forward and reverse finishing of the steel backing. The push-up components can be easily and quickly replaced, reducing the structural complexity of the dual-purpose hydraulic press and simultaneously lowering the equipment manufacturing cost.

[0006] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing has a lower drive cylinder connected to a bottom cylinder moving plate, and a pusher connected between the bottom cylinder moving plate and the lower die. The lower drive cylinder drives the bottom cylinder moving plate, supporting and pushing the pusher and the lower die upwards to achieve forward finishing operations.

[0007] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production features a central pressure rod as the pusher component. A central through-hole is located on the worktable, through which the central pressure rod connects to the lower die. Driven by a lower drive cylinder, the central pressure rod pushes the pusher component and the lower die upwards, closing with the upper die to achieve the stamping of the steel backing.

[0008] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production has a bottom cylinder pressure plate placed between the bottom cylinder moving plate and the central pressure rod. The bottom cylinder pressure plate increases the force-bearing area of ​​the bottom cylinder moving plate, thereby reducing the pressure exerted on the bottom cylinder moving plate by the central pressure rod during stamping and protecting the bottom cylinder moving plate.

[0009] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production has a lower die core on the lower mold, which is connected to a central pressure rod. The central pressure rod pushes the lower die core, causing it to cooperate with the lower and upper dies to stamp and form the steel backing.

[0010] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production connects the lower die core to the central pressure rod via a die core ejector. The die core ejector is used to lift the lower die core, thereby ejecting the stamped steel backing from the die.

[0011] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production has a pusher component set as a mold frame connecting rod. A connecting rod through-hole is provided on the worktable, through which the mold frame connecting rod passes to connect with the lower mold. The lower drive cylinder drives the mold frame connecting rod upwards, pushing the lower mold upwards to close with the upper mold.

[0012] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production has a lower mold moving plate at the upper end of the mold frame connecting rod, and the lower mold is located on the lower mold moving plate. The mold frame connecting rod pushes the lower mold moving plate, and the lower mold moving plate pushes the lower mold upward to close the mold.

[0013] The aforementioned hydraulic press, which can be used for both forward and reverse finishing processes, has a lower die pressure plate placed between the worktable and the lower die moving plate. The lower die pressure plate is used to protect the worktable and prevent it from being subjected to excessive pressure.

[0014] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing has a lower die bearing block on the lower die bearing plate, which is placed at the bottom of the lower die. The lower die bearing block is used to support the lower die during die closing.

[0015] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production has a mold frame guide pillar on the worktable, and the lower mold moving plate is positioned on the mold frame guide pillar. The mold frame guide pillar allows for more precise upward movement of the lower mold moving plate, improving the accuracy of the stamped products.

[0016] The aforementioned dual-purpose hydraulic press for both forward and reverse finishing production has an upper drive cylinder connected to a slide block, on which the upper die is mounted. The slide block can be positioned on the frame, ensuring accurate positioning when the upper die is pressed down.

[0017] The beneficial effects of this invention are: it solves the defect that the traditional mechanical punch press requires the addition of a hydraulic device for the steel back finishing process, and solves the problem that the traditional mechanical punch press is limited by its structure and space, making it impossible to realize the forward and reverse finishing process; it has both forward and reverse finishing capabilities, meets the needs of various stamping processes, and reduces the production and manufacturing costs of the equipment by using one machine for multiple purposes. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the reverse finishing stamping according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure for preparing the reverse finishing stamping start according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the upper drive cylinder pressing down steel back structure in the reverse finishing stamping of this invention embodiment;

[0021] Figure 4 This is a schematic diagram of the upward fine-repair steel back structure of the drive cylinder in the reverse fine-repair embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the upper and lower drive cylinder reset structure for the reverse finishing of the stamped steel backing according to an embodiment of the present invention;

[0023] Figure 6 This is a three-dimensional structural schematic diagram of the precision finishing stamping according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure for preparing for the start-up of the precision finishing stamping process according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the precision-finished stamped steel backing according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the upper and lower drive cylinder reset structure after the finishing of the stamping steel backing in an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the upper and lower molds in an embodiment of the present invention;

[0028] Figure 11 This is a schematic diagram of the structure of the workbench according to an embodiment of the present invention;

[0029] Figure 12 This is a cross-sectional schematic diagram of the connection structure of the lower drive cylinder according to an embodiment of the present invention;

[0030] Figure 13 This is a schematic diagram of the hydraulic control circuit according to an embodiment of the present invention;

[0031] Figure 14 This is a schematic diagram of the upper and lower mold structures for reverse finishing according to an embodiment of the present invention;

[0032] Figure 15 This is a schematic diagram of the upper and lower mold structures in the precision finishing process according to an embodiment of the present invention;

[0033] Figure 16This is a schematic diagram of the external structure of an embodiment of the present invention;

[0034] Figure 17 yes Figure 16 A top-down structural diagram.

[0035] Explanation of reference numerals in the attached drawings: Frame 1, Workbench 11, Center through hole 12, Connecting rod through hole 13, Mold frame guide post 14, Guide rod 15, Cartridge valve 16, Oil tank 17, Protective cover 18, Hydraulic system 19, Upper drive cylinder 21, Upper mold 22, Slider 23, Upper drive cylinder piston rod 24, Lower drive cylinder 31, Lower mold 32, Pushing component 33, Bottom cylinder moving plate 34, Bottom cylinder pressure plate 35, Lower mold core 36, Lower mold moving plate 37, Lower mold pressure plate 38, Lower mold pressure block 39, Electromagnetic directional valves 301, 302, 303, Proportional pressure valve 304, Hydraulic oil pipelines 305, 306, Lower drive cylinder body 311, Lower drive cylinder piston rod 312, Lower cylinder tie rod 313, Center pressure rod 331, Mold frame connecting rod 332, Mold core top post 333, Steel back 4. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1 to 15 As shown, a dual-purpose hydraulic press for both forward and reverse finishing production includes a frame 1, a worktable 11 mounted on the frame 1, and an upper drive cylinder 21 and a lower drive cylinder 31 located on the upper and lower sides of the worktable 11. The upper drive cylinder 21 is connected to an upper mold 22, and the upper drive cylinder 21 drives the upper mold 22 to press down toward the worktable 11. The lower drive cylinder 31 is detachably connected to a pusher 33 and a lower mold 32, and the lower drive cylinder 31 drives the lower mold 32 to move upward through the pusher 33 to close the mold with the upper mold 22.

[0038] like Figure 12 The diagram shows the structure of the lower drive cylinder 31. The lower drive cylinder 31 consists of a cylinder body 311 and a piston rod 312, and is suspended on the worktable 11 via a pull rod 313. During operation, the piston rod 312 drives the lower mold plate 37 upwards, and the pusher 33 pushes the lower mold 32 upwards to close with the upper mold 22.

[0039] The lower drive cylinder 31 is connected to the bottom cylinder moving plate 34, and the pusher 33 is connected between the bottom cylinder moving plate 34 and the lower mold 32.

[0040] The pusher 33 is configured as a central pressure rod 331, and the worktable 11 is provided with a central through hole 12. The central pressure rod 331 passes through the central through hole 12 and is connected to the lower mold 32.

[0041] A bottom cylinder bearing plate 35 is provided between the bottom cylinder moving plate 34 and the central bearing rod 331. A lower mold core 36 is provided on the lower mold 32, and the lower mold core 36 is connected to the central bearing rod 331.

[0042] The lower mold core 36 is connected to the central bearing rod 331 via a mold core top post 333. The mold core top post 333 is used to lift the lower mold core 36 when the central bearing rod 331 moves upward.

[0043] The pusher 33 is set as a mold frame connecting rod 332. The worktable 11 is provided with a connecting rod through hole 13. The mold frame connecting rod 332 passes through the connecting rod through hole 13 and connects to the lower mold 32.

[0044] The upper end of the mold frame connecting rod 332 is provided with a lower mold moving plate 37, and the lower mold 32 is located on the lower mold moving plate 37.

[0045] A lower mold pressure plate 38 is provided between the workbench 11 and the lower mold moving plate 37.

[0046] The lower mold bearing plate 38 is provided with a lower mold bearing block 39, which is placed at the bottom of the lower mold 32.

[0047] The workbench 11 is equipped with mold frame guide pillars 14, and the lower mold moving plate 37 is positioned on the mold frame guide pillars 14.

[0048] The upper drive cylinder 21 is connected to the slider 23, and the upper mold 22 is located on the lower side of the slider 23. The frame 1 is provided with a guide rod 15. When the upper drive cylinder 21 drives the slider 23 and the upper mold 22 to move downward, the slider 23 slides on the guide rod 15 to keep the movement positioning of the upper drive cylinder 21 driving the upper mold 22 to press down and close the mold accurately.

[0049] The upper drive cylinder 21 is connected to the slider 23, and the upper mold 22 is mounted on the slider 23. The upper drive cylinder piston rod 24 of the upper drive cylinder 21 is connected to the slider 23, and the upper drive cylinder 21 controls the upward and downward movement of the slider 23 through the upper drive cylinder piston rod 24.

[0050] like Figure 16 and Figure 17 The diagram shows the external structure and top view of an embodiment of the present invention. A protective cover 18 is provided at the end of the frame 1, and a hydraulic system 19 is provided inside the protective cover 18. The hydraulic system 19 is used to output hydraulic oil to drive the upper drive cylinder 21 and the lower drive cylinder 31. The hydraulic system 19 is equipped with electromagnetic directional valves 301, 302, and 303 and a proportional pressure valve 304.

[0051] like Figure 13In the hydraulic control circuit shown, the solenoid directional valve 301 is activated, allowing hydraulic oil to be input into the rodless chamber of the lower drive cylinder 31. This drives the piston rod 312 of the lower drive cylinder to rise, thereby pushing the lower mold 32 upward to cooperate with the upper mold 22 for precision finishing of the steel back. At this time, the hydraulic oil in the rod chamber of the lower drive cylinder 31 flows back to the oil tank 17 through the hydraulic oil pipeline 306.

[0052] After the precision stamping of the steel back 4 is completed, the solenoid directional valve 301 reverses, and the solenoid directional valve 302 opens to control the hydraulic oil to enter the rod chamber of the lower drive cylinder 31, driving the piston rod 312 of the lower drive cylinder to descend, driving the lower mold 32 to descend and reset. At this time, the hydraulic oil in the rodless chamber of the lower drive cylinder 31 flows back to the oil tank 17 through the solenoid valve 301.

[0053] In practical implementation, this invention can achieve two processes: forward and reverse finishing. During the reverse finishing stamping operation, the steel backing 4 is placed on the lower die 32. The upper drive cylinder 21 drives the slider 23 to move the upper die 22 downwards, pressing down on the steel backing 4, maintaining a certain pressure on it. The lower drive cylinder 31 drives the bottom cylinder moving plate 34 upwards, pushing the lower die 32 upwards via the die frame connecting rod 332 and the lower die moving plate 37. The lower die 32 and the upper die 22 cooperate to close and finish the steel backing. After completion, the upper drive cylinder 21 drives the slider 23 and the upper die 22 upwards for the return stroke to open the die, and the lower drive cylinder 31 drives the bottom cylinder moving plate 34 and the lower die 32 downwards for demolding.

[0054] During the finishing stamping operation, the lower drive cylinder 31 drives the bottom cylinder moving plate 34 upward, pushing the lower die core 36 upward into place via the central pressure rod 331. The steel back 4 is placed on the lower die 32. The upper drive cylinder 21 drives the slider 23 and the upper die 22 downward, cooperating with the lower die 32 to close the die and finish the steel back. At the same time, under the back pressure provided by the proportional pressure valve 304, the lower drive cylinder 31 supports the steel back 4 through the central pressure rod 331, the die core top column 333, and the lower die core 36, passively and synchronously moving downward under the downward force of the upper die 22, finishing and removing the steel back during the downward movement. After completion, the upper drive cylinder 21 returns, driving the upper die 22 upward to open the die, and the lower drive cylinder 31 inputs hydraulic oil to control the lower die core 36 to move upward to push open the steel back and demold it. Then, the lower drive cylinder 31 drives the bottom cylinder moving plate 34 and the central pressure rod 331 downward to reset.

[0055] During the finishing of the stamped steel backing, the upper drive cylinder 21 drives the upper die 22 downwards to finish the steel backing. At this time, the solenoid directional valve 303 is energized, controlling the hydraulic oil to connect to the proportional pressure valve 304. Simultaneously, the lower drive cylinder 31, under the backing pressure provided by the proportional pressure valve 304, passively and synchronously moves downwards, supporting the steel backing 4 through the central bearing rod 331, the die core top column 333, and the lower die core 36. The hydraulic oil in the rodless chamber of the lower drive cylinder 31 is compressed. When the hydraulic oil in the rodless chamber of the lower drive cylinder 31 exceeds the pressure set by the proportional pressure valve 304, it flows back to the oil tank 17 through the cartridge valve 16. During the reverse finishing of the stamped steel backing, the solenoid directional valve 302 is not energized. At this time, the proportional pressure valve 304 is not connected to the oil circuit and does not function. The pressure of the reverse finishing is controlled by the pressure of the hydraulic oil provided by the hydraulic system 19.

[0056] Among them, reference Figure 13 As shown, in the reverse finishing stamping operation, after the upper die 22 presses the steel back 4 onto the lower die core 36, the solenoid directional valve 301 is energized. When the solenoid directional valve 301 is energized, hydraulic oil enters the hydraulic oil line 305 from the cartridge valve corresponding to the solenoid directional valve 301, and then enters the rodless chamber of the lower drive cylinder 31. The lower drive cylinder 31 drives the bottom cylinder moving plate 34 and the die frame connecting rod 332 to push the lower die 32, which is located on the lower die moving plate 37, upward to perform the steel back finishing process. After the finishing is completed, the upper drive cylinder 21 returns, driving the upper die 22 upward to open the die. Subsequently, when the solenoid directional valve 302 is energized, hydraulic oil enters the hydraulic oil line 306 from the cartridge valve corresponding to the solenoid directional valve 302, and then enters the rod chamber of the lower drive cylinder 31 to perform the downward reset action.

[0057] In summary, as described in the specification and figures, the present invention has been manufactured into actual samples and subjected to multiple usage tests. The results of these tests demonstrate that the present invention achieves its intended purpose, and its practical value is undeniable. The embodiments described above are merely illustrative examples and are not intended to limit the present invention in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present invention, without departing from the scope of the technical features of the present invention, shall still fall within the scope of the technical features of the present invention.

Claims

1. A dual-purpose hydraulic press for both forward and reverse finishing production, characterized in that: The machine includes a frame (1), a worktable (11) on the frame (1), and an upper drive cylinder (21) and a lower drive cylinder (31) located on the upper and lower sides of the worktable (11). The upper drive cylinder (21) is connected to an upper mold (22). The upper drive cylinder (21) drives the upper mold (22) to press down towards the worktable (11). The lower drive cylinder (31) is detachably connected to a pusher (33) and a lower mold (32). The lower drive cylinder (31) drives the lower mold (32) to move upward and close with the upper mold (22) through the pusher (33). The lower drive cylinder (31) is connected to a bottom cylinder moving plate (34). The pusher (33) is connected between the bottom cylinder moving plate (34) and the lower mold (32). Among them, the pusher (33) is set as a central pressure rod (331), the worktable (11) is provided with a central through hole (12), the central pressure rod (331) passes through the central through hole (12) and is connected to the lower mold (32), the bottom cylinder moving plate (34) is provided with a bottom cylinder pressure plate (35) between it and the central pressure rod (331), the lower mold (32) is provided with a lower mold core (36), the lower mold core (36) is connected to the central pressure rod (331), and the lower mold core (36) and the central pressure rod (331) are connected by a mold core top column (333); Alternatively, the pusher (33) is set as a mold frame connecting rod (332), and the worktable (11) is provided with a connecting rod through hole (13). The mold frame connecting rod (332) passes through the connecting rod through hole (13) and connects to the lower mold (32). The upper end of the mold frame connecting rod (332) is provided with a lower mold moving plate (37). The lower mold (32) is set on the lower mold moving plate (37). A lower mold bearing plate (38) is provided between the worktable (11) and the lower mold moving plate (37). A lower mold bearing block (39) is provided on the lower mold bearing plate (38). The lower mold bearing block (39) is placed on the bottom of the lower mold (32). A mold frame guide post (14) is provided on the worktable (11). The lower mold moving plate (37) is positioned on the mold frame guide post (14).

2. The dual-purpose hydraulic press for forward and reverse finishing production according to claim 1, characterized in that: The upper drive cylinder (21) is connected to the slider (23), and the upper mold (22) is located on the slider (23).

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