Refit formwork of hydraulic machine and hydraulic machine

Abstract

The refitted mold base comprises an upper cylinder assembly, a lower cylinder assembly and mold table plates, the mold table plates are limited in a sliding mode through guide columns, and limiting adjusting devices are arranged between the mold table plates and the guide columns; the whole hole core rod, the limiting block and the product base plate are used for positioning a product, the adjusting plate is used for adjusting the upward moving height of the whole hole core rod, and the end of the lower cylinder assembly penetrates through the adjusting plate and is provided with a core rod gland; by means of the special shaping die frame structure of the limiting block and the adjusting plate, accurate positioning of a product on the die frame and independent, convenient and stable segmented control over the downward pressing stroke of the upper cylinder assembly and the jacking stroke of the lower cylinder assembly are achieved, and therefore the accuracy of the product hole position correcting process is effectively guaranteed; the consistency of whole hole machining and the product quality are improved; and an independent and stable machining station is constructed through the additionally arranged die table plate, the guide column and the limiting adjusting device, and the machining capacity of the hole shaping technology and other technologies is improved.

Description

Technical Field

[0001] This invention relates to the field of high-pressure, high-flow hydraulic press technology, specifically to a modified mold frame for a hydraulic press and a hydraulic press itself. Background Technology

[0002] When performing hole-making on existing hydraulic presses, the equipment is typically equipped with only a basic upper and lower cylinder drive structure, and the adjustment and control methods for the upper and lower strokes are relatively simple and fixed. Although some equipment may limit the stroke by adding shims or limit screws to the movable die table, this adjustment method usually requires stopping the machine, manual disassembly and assembly, and repeated measurements. This is not only inefficient and difficult to guarantee accuracy, but the adjusted limit mechanism often lacks reliable self-locking or rigid fixing functions, and is prone to loosening or displacement during equipment vibration or pressure, resulting in inaccurate processing position. This makes it difficult to ensure the consistency of hole depth and position across multiple batches of products, affecting processing accuracy and production efficiency.

[0003] Therefore, a modified mold frame for a hydraulic press and a hydraulic press are proposed to address the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a modified mold frame for a hydraulic press and a hydraulic press.

[0005] The objective of this invention is achieved through the following technical solution: a modified mold frame for a hydraulic press, comprising an upper cylinder assembly and a lower cylinder assembly, a mold plate is provided between the upper cylinder assembly and the lower cylinder assembly, the mold plates are slidably limited by guide pillars, and a limit adjustment device is provided between the mold plate and the guide pillars; The product positioning mandrel, limiting block, and product pad also include an adjustment plate for adjusting the height of the mandrel, and a mandrel cap is provided at the end of the lower cylinder assembly passing through the adjustment plate. The limit adjustment device includes a threaded column fixedly connected to the middle of the guide column, a worm gear threadedly connected to the threaded column, a worm meshing with the turbine, a control rod slidably fitted at the end of the worm, and a fitting part that abuts against the edge of the turbine on the control rod; The threaded column has a sliding fit between a pressure rod and a pressure plate. A fixing part is rotatably connected to the pressure rod. The fixing part rotates to fix the position of the pressure plate, thus achieving precise fine adjustment and self-locking.

[0006] As a further description of the above technical solution: the mold plate includes an upper template, an upper mold table, a lower template and a base plate. The upper template is connected to the output shaft of the upper cylinder assembly, and the body of the lower cylinder assembly is fixedly connected to the base plate.

[0007] As a further description of the above technical solution: the threaded column is provided with a sliding groove that is in contact with the pressing rod, the fixing member includes a movable rod that movably passes through the pressing rod, the end of the movable rod is connected and fixed to the pressing plate, the end face of the pressing plate is an inclined surface, the end of the pressing rod is provided with a mating groove, and a pressing column that is in contact with the inclined surface is fixedly connected to the mating groove.

[0008] As a further description of the above technical solution: a protective tube is sleeved on the outer surface of the threaded column, and a sliding groove is opened on the protective tube to communicate and cooperate with the sliding groove. A limiting ring that is movably sleeved on the protective tube and connected and fixed to the pressing rod is also provided.

[0009] As a further description of the above technical solution: a plug plate is movably inserted into the pressing rod via a compression spring, and the end of the plug plate is provided with a groove that presses against the pressing column.

[0010] As a further description of the above technical solution: the fitting component includes a pressure plate rotatably connected to the control rod, a connecting plate is fixedly connected to the pressure plate, an insert rod is movably inserted into the connecting plate, an elastic sheet is fixedly connected to the end of the insert rod, and the elastic sheet and the pressure plate simultaneously press against the edge of the turbine to improve pressure distribution.

[0011] As a further description of the above technical solution: the limit adjustment device also includes a fixed plate rotatably connected to the worm gear, and a limit plate that presses against the insertion rod is fixedly connected to the fixed plate. Both the end of the limit plate and the end of the elastic plate are provided with wedge-shaped surfaces that cooperate with each other, thereby actively increasing the locking force.

[0012] As a further description of the above technical solution: the control rod has an L-shaped structure, with a spring connecting the inner end of the control rod to the worm gear, and a handle rod rotatably connected to the outer end of the control rod, which facilitates operation and storage.

[0013] As a further description of the above technical solution: a hydraulic press, the hydraulic press including a table machine, the table machine being equipped with the modified mold frame as described above.

[0014] Compared with the prior art, the advantages of the present invention are as follows: 1. This invention achieves precise positioning of the product on the mold frame and independent, convenient and stable segmented control of the downward stroke of the upper cylinder assembly and the upward stroke of the lower cylinder assembly through a dedicated forming mold frame structure of limiting blocks and adjusting plates. This effectively ensures the accuracy of the product hole position correction process and improves the consistency of hole processing and product quality. Furthermore, the mold frame structure in this application is compact and can be adapted to existing hydraulic presses for modification and upgrading. While making full use of the original machine platform drive function, an independent and stable processing station is constructed by adding a mold platform plate, guide pillars and limit adjustment device, thereby improving the processing capabilities in processes such as hole filling.

[0015] 2. This application achieves precise and stable adjustment of the die plate stroke through a worm gear transmission structure and multiple counter-pressure locking mechanisms, including counter-pressure plates, elastic sheets, and counter-pressure discs, effectively improving the accuracy and reliability of position control during the hole-making process; Furthermore, the pressure plate and elastic sheet can be locked in both directions. The limiting plate drives the elastic sheet to adjust its position. After adjusting the mold frame, double locking can be achieved to prevent displacement caused by equipment vibration or pressure impact, ensuring the stability of the mold table position during processing, thereby improving the consistency of the product hole and processing quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the limiting adjustment device located within the lower template of the present invention; Figure 4 This is a cross-sectional structural diagram of the lower template of the present invention; Figure 5 This is a schematic diagram showing the disassembly of the lower template and the internal threaded column of the present invention; Figure 6 This is a cross-sectional structural diagram of the protective tube of the present invention; Figure 7 This is the present invention. Figure 6 Side view of the middle structure; Figure 8 This is a schematic diagram of the disassembled structure of the turbine and threaded column of the present invention; Figure 9 This is a schematic diagram of the turbine and worm gear mating structure of the present invention; Figure 10 This is a schematic diagram of the disassembled structure of the turbine and worm gear of the present invention; Figure 11 This is a schematic diagram of the cooperation structure between the limiting plate and the elastic sheet of the present invention; Figure 12 This is a cross-sectional structural diagram of the threaded column of the present invention; Figure 13 This is a schematic diagram of the disassembled structure of the threaded column and the protective tube of the present invention; Figure 14 This is a schematic diagram of the structure of the sliding groove for separating the pressure rod and the pressure plate of the present invention; Figure 15 This is the present invention. Figure 14 A schematic diagram of the breakdown of the structure.

[0017] Labeling Explanation: 1. Upper cylinder assembly; 2. Lower cylinder assembly; 3. Mold table plate; 301. Upper template; 302. Upper mold table; 303. Lower template; 304. Base plate; 4. Guide post; 5. Hole mandrel; 6. Limiting block; 7. Product pad; 8. Adjusting plate; 9. Mandrel cap; 10. Threaded post; 11. Worm gear; 12. Worm; 13. Control rod; 14. Pressing rod; 15. Pressing plate; 16. Sliding groove; 17. Movable rod; 18. Mating groove; 19. Pressing post; 20. Protective tube; 21. Sliding groove; 22. Limiting ring; 23. Insert plate; 24. Groove; 25. Pressing plate; 26. Connecting plate; 27. Insert rod; 28. Elastic sheet; 29. ​​Fixing plate; 30. Limiting plate; 31. Wedge surface; 32. Handle rod. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1-15 The diagram shown is a schematic diagram of a modified mold frame for a hydraulic press provided by the present invention. Example 1: A modified mold frame for a hydraulic press includes an upper cylinder assembly 1 and a lower cylinder assembly 2. A mold plate 3 is provided between the upper cylinder assembly 1 and the lower cylinder assembly 2. The mold plate 3 is slidably limited by guide pillars 4. A limit adjustment device is provided between the mold plate 3 and the guide pillars 4. The product positioning includes a core rod 5, a limiting block 6, and a product pad 7. It also includes an adjusting plate 8 for adjusting the height of the core rod 5. The lower cylinder assembly 2 has a core rod cover 9 that passes through the adjusting plate 8. One end of the core rod is connected to the core rod cover 9, and the other end passes through the upper mold table 302. The mold plate 3 includes an upper mold plate 301, an upper mold plate 302, a lower mold plate 303, and a base plate 304. The upper mold plate 301 is connected to the output shaft of the upper cylinder assembly 1, and the body of the lower cylinder assembly 2 is fixedly connected to the base plate 304.

[0019] Phase 1: Positioning and Preparation Product positioning: The product to be processed is placed on the product pad 7, which is equipped with a mandrel 5. The product is precisely positioned radially (hole position) by fitting it onto the mandrel. At the same time, the limiting block 6 on the product pad 7 determines the initial position of the product in the height direction (axial direction).

[0020] Equipment ready: The entire mold plate 3 is installed as an independent module on the hydraulic press workbench.

[0021] Phase Two: Timing of Hole Formation and Demolding This is a simple mechanical process executed sequentially and controlled by a hydraulic press program: The upper cylinder assembly 1 moves downward to form a hole: The upper cylinder assembly 1 drives the upper template 301 to move downward. When the component on the upper mold table 302 contacts the limiting block 6 on the product pad 7, it stops moving downward; at this time, the upper template 301 applies pressure to the product, but the hole forming mandrel 5 remains stationary, playing a supporting and shaping guiding role, completing the initial leveling or shaping of the upper surface or periphery of the product.

[0022] Lower cylinder assembly 2 moves upward and ejects: Subsequently, lower cylinder assembly 2 is activated, driving the adjusting plate 8 and mandrel cover 9 to move upward; the moving position of the adjusting plate 8 is preset, which determines the precise height that the mandrel cover 9 and the connected mandrel 5 can rise. The mandrel 5 is pushed upwards and passes through the pre-made hole in the product to squeeze and correct it, thereby completing the hole (correcting the hole shape, diameter, perpendicularity, etc.).

[0023] Reset and Demolding: After the hole-forming action is completed, the upper cylinder assembly 1 first moves upward to return to its original position, releasing the pressure on the product. Then, the lower cylinder assembly 2 moves downward to return to its original position, driving the hole-forming mandrel 5 out of the product hole. At this time, the product may be ejected from the hole-forming mandrel 5 by the ejection mechanism (conventional technology, not shown in the illustration) or by gravity, completing the demolding process.

[0024] Example 2: Example 2 is a further supplement and explanation of Example 1; a modified mold frame for a hydraulic press also includes a limit adjustment device comprising a threaded column 10 fixedly connected to the middle of the guide column 4, a turbine 11 threadedly connected to the threaded column 10, the turbine 11 meshing with a worm gear 12, a control rod 13 slidably fitted at the end of the worm gear 12, and a fitting part on the control rod 13 that abuts against the edge of the turbine 11; the turbine 11 and worm gear 12 transmission has a high reduction ratio, allowing for extremely fine adjustment of the height of the mold plate 3; its inherent self-locking property ensures that the set height will not change unexpectedly due to gravity or vibration when the adjustment is interrupted or the hydraulic press vibrates during operation, thus ensuring the stability of the processing parameters. The threaded post 10 has a sliding groove 16 that engages with the pressing rod 14. The fixing member includes a movable rod 17 that movably passes through the pressing rod 14. The end of the movable rod 17 is connected and fixed to the pressing plate 15. The end face of the pressing plate 15 is an inclined surface. The end of the pressing rod 14 has a mating groove 18. A pressing post 19 that engages with the inclined surface is fixedly connected to the mating groove 18.

[0025] It should be noted that: the outer surface of the threaded column 10 is fitted with a protective tube 20 that is connected and fixed to the lower template 303. The protective tube 20 is provided with a sliding groove 21 that is connected and cooperates with the sliding groove 16. A limiting ring 22 that is connected and fixed to the pressing rod 14 is movably fitted on the protective tube 20.

[0026] The pressing rod 14 is movably connected to a connecting plate 23 via a compression spring, and the end of the connecting plate 23 has a groove 24 that presses against the pressing column 19.

[0027] The bonding component includes a pressure plate 25 rotatably connected to the control rod 13. A connecting plate 26 is fixedly connected to the pressure plate 25. A plug rod 27 is movably inserted into the connecting plate 26. An elastic sheet 28 is fixedly connected to the end of the plug rod 27. The elastic sheet 28 and the pressure plate 25 simultaneously press against the edge of the turbine 11. The elastic sheet 28 can better fit the curved surface of the turbine 11 edge, providing a more uniform and gentle contact pressure, reducing local stress concentration and wear, and improving the service life and long-term locking stability of the bonding component.

[0028] Example 3: Example 3 is a further supplement and explanation of Example 1 and Example 2; specifically, a pressing rod 14 and a pressing plate 15 are slidably fitted on the threaded column 10, and a fixing member is rotatably connected to the pressing rod 14. The fixing member rotates the pressing plate 15 to fix the position of the pressing member.

[0029] The limiting adjustment device also includes a fixed plate 29 rotatably connected to the worm gear 12. The fixed plate 29 is fixed inside the lower template 303. A limiting plate 30 that presses against the insertion rod 27 is fixedly connected to the fixed plate 29. Both the end of the limiting plate 30 and the end of the elastic plate 28 are provided with mutually cooperating wedge-shaped surfaces 31. When the control rod 13 is pushed back, it drives the insertion rod 27 and the elastic plate 28 to move toward the limiting plate 30. Both the end of the elastic plate 28 and the end of the limiting plate 30 are designed with mutually cooperating wedge-shaped surfaces 31. At the moment of contact, the interaction of the wedge-shaped surfaces 31 will force the elastic plate 28 to produce additional deformation, thereby actively increasing its pressing force on the edge of the turbine 11, achieving the effect of "the more you push, the tighter it gets".

[0030] It is worth noting that the control lever 13 has an L-shaped structure. One end of the control lever 13 inserts into the lower template 303 and rotates within the template 303. A spring is connected between the inner end of the control lever 13 and the worm gear 12. The outer end of the control lever 13 is rotatably connected to a handle 32. The L-shaped design of the control lever 13 and the handle 32 makes the operating position more ergonomic, facilitating the operator to apply force, especially in the space-constrained interior of the machine. Rotating the handle 32 can change the grip angle and avoid interference with surrounding components.

[0031] A hydraulic press, the hydraulic press comprising a benchtop machine having a modified mold frame as described above installed inside the benchtop machine.

[0032] Working principle: This application is mainly able to position the product and adjust and control the distance limit of the movement of the upper cylinder assembly 1 and the lower cylinder assembly 2; The product is placed on the product pad 7 and positioned with the mandrel 5. The product pad 7 has a limit block 6, which can limit the downward position of the upper cylinder assembly 1. The position of the lower cylinder assembly 2 is fixed by adjusting the position of the adjusting plate 8. Finally, after the upper cylinder assembly 1 moves upward and the lower cylinder assembly 2 returns to its original position, the product can be demolded. This completes the entire process of the product being molded.

[0033] Regarding the working principle of adjusting position 8 of the adjustment plate: First, rotate the movable rod 17 to drive the pressure plate 15 to rotate, so that the inclined surface of the pressure plate 15 rotates relative to the pressure post 19. The groove 24 on the plug plate 23 disengages from the pressure post 19, so that the flat end of the pressure plate 15 is close to the direction of the pressure rod 14. The flat end of the pressure plate 15 will not contact the inside of the sliding groove 16, thereby releasing the fixing effect on the threaded post 10 and allowing the threaded post 10 to move up and down. Among them, the protective tube 20 is connected and fixed to the lower template 303, and the pressure rod 14 will never leave the movable groove, restricting the threaded column 10 to only move up and down inside the protective tube 20; Then, by rotating the handle rod 32, the handle rod 32 is horizontally distributed with the lower template 303, and then moved away from the lower template 303, thereby pulling the control rod 13, causing the control rod 13 to move along the worm gear 12. The spring is stretched, and at the same time, it drives the pressure plate 25 and the connecting plate 26 to move horizontally within the lower template 303, thereby moving the pressure plate 25 away from the turbine 11, thereby releasing the pressure on the turbine 11, and the inclined section (pressure section) of the elastic sheet 28 is away from the turbine 11, thereby releasing the pressure effect on the turbine 11. The worm gear 12 rotates in its original position within the lower template 303, while the control rod 13 remains in place with the worm gear 12. The control rod 13 and the worm gear 12 rotate synchronously and do not affect the relative sliding of the control rod 13 on the worm gear 12. Then, by making a circular motion on the handle 32, the control lever 13 rotates, which drives the worm gear 12 to rotate, which in turn causes the turbine 11 to rotate in its original position. The turbine 11 rotates in its original position within the lower template 303. Due to the restriction of the sliding groove 21 of the protective tube 20, the pressure rod 14, and the sliding groove 16, the threaded column 10 cannot rotate, which causes the turbine 11 to drive the threaded column 10 to move up and down. The pressure rod 14 moves up and down along the sliding groove 21 and the sliding groove 16 to adapt to the movement. The threaded column 10 moves up and down relative to the lower template 303, thereby adjusting the position of the lower template 303 and the adjusting plate 8 relative to the base plate 304 and the upper mold table 302. This allows the position of the adjusting plate 8 to control the distance the lower cylinder assembly 2 rises, thus fixing the position of the mandrel.

[0034] Finally, release the handle 32. Under the action of the spring, the control lever 13 moves towards the worm gear 12, thereby driving the pressure plate 25 and the connecting plate 26 to move. The pressure plate 25 re-contacts the turbine 11, and the inclined section of the elastic plate 28 re-contacts the edge of the turbine 11. When the connecting plate 26 drives the elastic plate 28 and the insert rod 27 to move closer to the fixed plate 29, the position of the limiting plate 30 remains unchanged. The limiting plate 30 and the wedge-shaped surface 31 of the elastic plate 28 contact each other, thereby causing the elastic plate 28 to move away from the connecting plate 26, so that the elastic plate 28 presses more tightly against the turbine 11, ensuring that the adjusted position is fixed and the threaded column 10 cannot move up and down. Rotating the movable rod 17 causes the pressure plate 15 to rotate within the mating groove 18. Due to the pressure between the inclined surface of the pressure plate 15 and the pressure column 19, the plane of the pressure plate 15 (the other side of the inclined surface) moves away from the pressure plate 15, thereby pressing the pressure plate 15 and the pressure column 14 tightly against the inner wall of the sliding groove 16, fixing the pressure column 14 within the sliding groove 16, and making the threaded column 10 more stable and unable to move up and down.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A modified mold frame for a hydraulic press, characterized in that, include: The upper cylinder assembly (1) and the lower cylinder assembly (2) are provided with a mold plate (3) between the upper cylinder assembly (1) and the lower cylinder assembly (2). The mold plate (3) is slidably limited by the guide post (4). A limit adjustment device is provided between the mold plate (3) and the guide post (4). The product positioning mandrel (5), limiting block (6), and product pad (7) also include an adjusting plate (8) for adjusting the height of the mandrel (5) moving upwards, and a mandrel cap (9) is provided at the end of the lower cylinder assembly (2) through the adjusting plate (8). The mold plate (3) includes an upper mold plate (301), an upper mold plate (302), a lower mold plate (303), and a base plate (304). The upper mold plate (301) is connected to the output shaft of the upper cylinder assembly (1), and the body of the lower cylinder assembly (2) is fixedly connected to the base plate (304).

2. The modified mold frame for a hydraulic press according to claim 1, characterized in that: The limiting adjustment device includes a threaded column (10) fixedly connected to the middle of the guide column (4), a turbine (11) threadedly connected to the threaded column (10), a worm gear (12) meshing with the turbine (11), a control rod (13) slidingly fitted at the end of the worm gear (12), and a fitting part that abuts against the edge of the turbine (11) on the control rod (13). The threaded column (10) has a sliding fit between a pressure rod (14) and a pressure plate (15). A fixing member is rotatably connected to the pressure rod (14), and the fixing member rotates the pressure plate (15) to fix the position of the pressure member.

3. The modified mold frame for a hydraulic press according to claim 2, characterized in that: The threaded column (10) is provided with a sliding groove (16) that is in contact with the pressing rod (14). The fixing component includes a movable rod (17) that is movable through the pressing rod (14). The end of the movable rod (17) is connected and fixed to the pressing plate (15). The end face of the pressing plate (15) is an inclined surface. The end of the pressing rod (14) is provided with a mating groove (18). A pressing column (19) that is in contact with the inclined surface is fixedly connected to the mating groove (18).

4. The modified mold frame for a hydraulic press according to claim 2, characterized in that: The outer surface of the threaded column (10) is fitted with a protective tube (20), and the protective tube (20) is provided with a sliding groove (21) that communicates and cooperates with the sliding groove (16). A limiting ring (22) that is movably fitted on the protective tube (20) and connected and fixed to the pressing rod (14) is also provided.

5. The modified mold frame for a hydraulic press according to claim 3, characterized in that: A plug plate (23) is movably inserted into the pressure rod (14) via a compression spring. The end of the plug plate (23) has a groove (24) that is engaged with the pressure post (19).

6. The modified mold frame for a hydraulic press according to claim 2, characterized in that: The fitting component includes a pressure plate (25) rotatably connected to the control rod (13), a connecting plate (26) fixedly connected to the pressure plate (25), a plug rod (27) movably inserted into the connecting plate (26), an elastic piece (28) fixedly connected to the end of the plug rod (27), and the elastic piece (28) and the pressure plate (25) simultaneously press against the edge of the worm gear (11).

7. The modified mold frame for a hydraulic press according to claim 6, characterized in that: The limiting adjustment device also includes a fixed plate (29) rotatably connected to the worm (12). A limiting plate (30) that presses against the insert rod (27) is fixedly connected to the fixed plate (29). Both the end of the limiting plate (30) and the end of the elastic sheet (28) are provided with wedge-shaped surfaces (31) that cooperate with each other.

8. The modified mold frame for a hydraulic press according to claim 2, characterized in that: The control lever (13) has an L-shaped structure. A spring is connected between the inner end of the control lever (13) and the worm gear (12). A handle (32) is rotatably connected to the outer end of the control lever (13).

9. A hydraulic press, characterized in that, The hydraulic press includes a benchtop machine, which is equipped with a modified mold frame as described in any one of claims 1-8.

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