Multi-station rotary workbench control system and control method for hydraulic machine

Abstract

The invention relates to the technical field of die change of hydraulic machines, in particular to a multi-station rotary workbench control system and method for a hydraulic machine. The multi-station rotary workbench control system comprises a driving mechanism, a rotary workbench mechanism, a pressure forming mechanism and a demolding mechanism; the driving mechanism drives the rotary worktable to rotate and circularly work, the pressure forming mechanism corresponds to the rotary worktable and is used for forming a product, and the demolding mechanism corresponds to the pressure forming mechanism and is used for demolding the product, so that the purpose of improving the efficiency can be achieved. The multi-station pressing device has the beneficial effects that multi-station pressing is utilized, the labor and time cost is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of die changing for hydraulic presses, and particularly to a multi-station rotary table control system and control method for a hydraulic press. Background Art

[0002] When the existing hydraulic equipment performs forming processing, the die is directly placed on the workbench, and the movable beam of the hydraulic press descends to apply pressure to form it and then demold it. However, this method can only press one product at a time, and manual material taking and material changing are required, resulting in low work efficiency.

[0003] For this reason, the present invention proposes a multi-station rotary table control system and control method for a hydraulic press, which can achieve the purpose of improving production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a multi-station rotary table control system and control method for a hydraulic press.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A multi-station rotary table control system for a hydraulic press, characterized by comprising: a driving mechanism, a rotary table mechanism, a pressure forming mechanism, and a demolding mechanism; The driving mechanism includes a motor, a reducer, a base, and a gear set. The gear set is arranged on the base. The gear set includes a driving gear, a driven gear, and a connecting gear. The motor is connected to the reducer, the driving shaft of the reducer is connected to the driving gear, the driving gear meshes with the driven gear, and the driven gear meshes with the connecting gear; The rotary table mechanism includes a support pedestal, a rotary gear disk, a rotary table, and a workbench. The rotary gear disk is connected above the support pedestal. The rotary table is connected to the upper end of the rotary gear disk. A plurality of workbenches for placing dies are evenly distributed around the rotary table. The rotary gear disk meshes with the connecting gear; the rotary table mechanism rotates and operates cyclically under the drive of the driving mechanism; The pressure forming mechanism corresponds to the workbench and includes a forming mounting seat, a pressure block seat, a lower pressing ring, and an upper pressing ring. The forming mounting seat corresponds to the pressure block seat. A through channel is arranged inside the pressure block seat. The lower pressing ring is fixedly connected to the lower part of the upper pressing ring. The lower pressing ring and the upper pressing ring are slidably arranged in the channel of the pressure block seat; The demolding mechanism corresponds to the pressure forming mechanism and includes a demolding seat and an oil cylinder. The lower plane of the demolding seat is fixedly connected to the upper plane of the pressure block seat. A horizontal oil cylinder is fixedly connected to one side of the demolding seat. A support block is fixedly connected inside the demolding seat, and a demolding device is arranged inside the support block; It further includes a controller, and the driving mechanism, the rotary table mechanism, the compression molding mechanism and the demolding mechanism are electrically connected to the controller.

[0006] Further, the demolding device includes a first wedge-shaped column, a first guide cylinder, a second wedge-shaped column and a second guide cylinder. The first guide cylinder horizontally penetrates through the support block. The output shaft of the oil cylinder is connected to the first wedge-shaped column. The first wedge-shaped column is slidably arranged inside the first guide cylinder. A through hole is arranged at one end of the first guide cylinder close to the bottom of the demolding seat. The lower part of the through hole is connected with the second guide cylinder. A second wedge-shaped column is slidably arranged inside the second guide cylinder. The axial direction of the second wedge-shaped column is perpendicular to that of the first wedge-shaped column. The upper part of the second wedge-shaped column is slidably connected to the lower part of the demolding seat, and the bottom of the second wedge-shaped column is fixedly connected to the upper pressing ring. The contact surface between the first wedge-shaped column and the second wedge-shaped column is an inclined surface. The second guide cylinder is fixedly connected to the support block, and the lower end surface of the second guide cylinder is flush with the lower end surface of the demolding seat.

[0007] Further, a driving push block is fixedly connected to the top end of the driving gear. Push block cylinders are fixedly arranged at both ends of the driving push block. A driven push block is fixedly arranged at the top end of the driven gear.

[0008] Further, the shape of the driven push block is like a "racket". The arc surface at the handle of the "racket" is adapted to the outer arc surface of the push block cylinder. The distance between the closest end faces of the two push block cylinders is greater than the maximum diameter of the driven push block.

[0009] Further, the driven gear is an intermittent gear, and the intermittent surface of the intermittent gear corresponds to the extending direction of the driven push block.

[0010] Further, the number of the worktables is 5, and a die hole for placing a lining cylinder is arranged on the end face of the worktable.

[0011] Further, connecting rods are arranged between the worktables for connection.

[0012] Further, an annular step is arranged at the lower end of the channel of the pressing block seat. An annular boss is arranged at the upper end of the lower pressing ring. The annular boss can abut against the annular step. The lower end of the lower pressing ring slides in the channel of the pressing block seat. The outer diameter of the upper pressing ring is smaller than the inner diameter of the annular step.

[0013] Further, an elastic connection is arranged between the bottom of the annular step and the upper pressing ring.

[0014] Further, the contact surface between the first wedge-shaped column and the second wedge-shaped column is an inclined surface. The second guide cylinder is fixedly connected to the support block, and the lower end surface of the second guide cylinder is flush with the lower end surface of the demolding seat.

[0015] Further, a notch surface that is concave inward is provided on one side of the lower end of the second wedge-shaped column, and a limiting block is fixedly connected to the bottom of the demolding seat, and the notch surface is slidably connected to the limiting block.

[0016] Further, a control method includes a multi-station rotary table control system for a hydraulic press as described above, and includes the following steps: S1: First, install the molds in the mold holes of each worktable, and fill the molds with materials; S2: The first worktable rotates above the pressing and forming mechanism; S3: Press; S4: Demold; S5: After the first mold is demolded, the turntable starts to rotate, and the second worktable rotates above the pressing and forming mechanism to start pressing. S6: While the second worktable is pressing, fill the first demolded mold with materials; S7: After the second mold is demolded, rotate the turntable again to press the third mold, and at the same time fill the second mold with materials, and so on in a cycle until all pressing work is completed.

[0017] Further, in S2, when the controller controls the first worktable to rotate above the pressing and forming mechanism, the driving gear and the driven gear are not engaged; In S3, during pressing, the driving gear continues to rotate, and the push block cylinder on the driving gear drives the driven push block to rotate; In S4, the oil cylinder pushes the first wedge-shaped column, and the first wedge-shaped column pushes the second wedge-shaped column, thereby pushing the lower pressing ring downward to take out the formed product; In S5, after pressing and demolding, the controller controls the driving gear to continue to rotate. When the driving gear and the driven gear rotate to be engaged, it drives the connecting gear to rotate, thereby driving the rotating gear disk to rotate. When the driving gear rotates to be opposite to the intermittent surface of the driven gear, the second worktable rotates above the pressing and forming mechanism; When the second worktable rotates from the initial position to the pressing and forming mechanism, the transmission ratio of the driving gear and the rotating gear disk i 总 Can be expressed as: , where Z 主动 Is the number of teeth of the driving gear, Z 旋转 Is the number of teeth of the rotating gear disk, and the rotational speed Of the driving gear can be expressed as: , Where N is the number of worktables, and T 间隔 Is the interval time from the start of pressing to demolding of one of the worktables.

[0018] Compared with the existing technology, the multi-station rotary table control system and control method for a hydraulic press provided by the present invention have the following advantages: 1. By using multi-station pressing, the labor and time costs are reduced, and the work efficiency is improved; 2. By using an intermittent gear to achieve precise control of the rotation angle of the rotating gear disk, the operation is stable and the positioning accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is a schematic diagram of the driving mechanism of the present invention; Figure 3 is a schematic diagram of the driving gear in the driving mechanism; Figure 4 is a schematic diagram of the driven gear in the driving mechanism; Figure 5 is a schematic diagram of the rotary table mechanism of the present invention; Figure 6 is a schematic cross-sectional view of the pressure forming mechanism of the present invention; Figure 7 is a schematic cross-sectional view of the demoulding mechanism of the present invention; In the figure: 1. Driving mechanism, 11. Motor, 12. Base, 13. Driving gear, 131. Driving push block, 132. Push block cylinder, 14. Driven gear, 141. Driven push block, 15. Connecting gear, 2. Rotary table mechanism, 21. Support pedestal, 22. Rotating gear disk, 23. Rotating table, 24. Worktable, 241. Die hole, 25. Connecting rod, 3. Pressure forming mechanism, 31. Forming mounting seat, 32. Pressure block seat, 33. Lower pressing ring, 34. Upper pressing ring, 35. Annular step, 36. Connecting block, 37. Limit column, 4. Demoulding mechanism, 40. First guide cylinder, 41. First wedge-shaped column, 42. Second wedge-shaped column, 421. Second guide cylinder, 43. Demoulding seat, 44. Oil cylinder, 45. Support block, 46. Notch surface, 47. Limit block, 5. Bushing. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. At the same time, the terms "first", "second", etc. are only used to distinguish the names of the components and do not have a primary or secondary relationship. Therefore, it should not be construed as a limitation of the present invention.

[0022] Example 1, as Figure 1 、 Figure 2 and Figure 5 shown, a multi-station rotary table for a hydraulic press includes: a driving mechanism 1; a rotary table mechanism 2; a pressing and forming mechanism 3; a demolding mechanism 4; The driving mechanism 1 includes a motor 11, a reducer, a base 12, and a gear set. The gear set is arranged on the base 12. The gear set includes a driving gear 13, a driven gear 14, and a connecting gear 15. The motor 11 is connected to the reducer, the drive shaft of the reducer is connected to the driving gear 13, the driving gear 13 meshes with the driven gear 14, and the driven gear 14 meshes with the connecting gear 15.

[0023] The rotary table mechanism 2 includes a support pedestal 21, a rotary gear disk 22, a rotary table 23, and a worktable 24. The rotary gear disk 22 is connected above the support pedestal 21. The upper end of the rotary gear disk 22 is connected to the rotary table 23. A plurality of worktables 24 for placing molds are evenly distributed around the rotary table 23. The rotary gear disk 22 meshes with the connecting gear 15; the rotary table mechanism 2 rotates and operates cyclically under the drive of the driving mechanism 1.

[0024] Example 2, as Figure 3 and Figure 4 shown, in order to enable the plurality of worktables 24 to continuously perform pressing operations, in this embodiment, the driven gear 14 is an intermittent gear. The intermittent surface of the intermittent gear corresponds to the extending direction of the driven push block 141, and the height of the intermittent surface of the intermittent gear is equal to the height of the driving gear 13.

[0025] The circumference of the driven gear 14 is one-fifth of the circumference of the rotary gear disk 22, and the intermittent time is the time during which the press can press and demold the raw material in the mold.

[0026] In order to enable the driven gear 14 to move continuously, a driving push block 131 is fixedly connected to the top of the driving gear 13. Push block cylinders 132 are fixedly arranged at both ends of the driving push block 131, and a driven push block 141 is fixedly arranged at the top of the driven gear 14.

[0027] The external shape of the driven push block 141 is in the shape of a "racket". The arc surface at the handle of the "racket" is adapted to the outer arc surface of the push block cylinder 132, and the distance between the end faces of the two push block cylinders 132 is greater than the maximum diameter of the driven push block 141.

[0028] When the motor 11 drives the active gear 13 to rotate, the active push block 131 will also rotate accordingly, and the driven push block 141 will be driven by the driven gear 14 to rotate. Since the direction of the driven push block 141 is the same as the intermittent surface direction of the intermittent gear, when the driven push block 141 rotates between the two push block cylinders 132, the intermittent surface of the driven gear 14 cannot be engaged with the gear, and the driven gear 14 will stop rotating, and the rotating gear disk 22 will also stop rotating. When the push block cylinder 132 on the left rotates to the arc surface at the root of the driven push block 141 driven by the active gear 13, the driven push block 141 will be pushed by the push block cylinder 132. When the two push block cylinders 132 on the active gear 13 continue to rotate, the driven push block 141 will drive the driven gear 14 to rotate, so that the driven gear 14 will be engaged with the active gear 13 again, and then drive the connecting gear 15 to rotate, and finally drive the rotating gear disk 22 to rotate. The two push block cylinders 132 on the active gear 13 alternately push the driven push block 141, so as to continuously cycle.

[0029] Embodiment 3: In order to make the connection between multiple workbenches 24 more firm, a connecting rod 25 is provided between two adjacent workbenches 24 for connection.

[0030] In this embodiment, the number of workbenches 24 is 5, and a mold hole 241 for placing a mold is provided on the end face of each workbench 24.

[0031] Embodiment 4, as Figure 1 and Figure 6 shown, the pressure forming mechanism 3 corresponds to the workbench 24, and includes a forming mounting seat 31, a pressure block seat 32, a lower pressing ring 33, and an upper pressing ring 34. The forming mounting seat 31 corresponds to the pressure block seat 32. A through channel is provided inside the pressure block seat 32. The lower pressing ring 33 is fixedly connected to the lower part of the upper pressing ring 34, and the lower pressing ring 33 and the upper pressing ring 34 are slidably arranged in the channel of the pressure block seat 32.

[0032] In this embodiment, an annular step 35 is provided at the lower end of the channel of the pressing block seat 32. When the lower pressing ring 33 and the upper pressing ring 34 slide in the channel of the pressing block seat 32, since the inner diameter of the annular step 35 is larger than the outer diameter of the lower pressing ring 33, the lower pressing ring can slide at the lower end of the channel of the pressing block seat 32. The outer diameter of the upper pressing ring 34 is set to be smaller than the inner diameter of the annular step 35, so the upper pressing ring 34 can only slide on the annular step 35. Also, since an annular boss is provided at the upper end of the lower pressing ring 33, the annular boss can abut against the annular step 35. When the annular boss abuts against the annular step 35, the lower pressing ring 33 will stop moving, and the annular step 35 can play a role in limiting the upper pressing ring 34 and the lower pressing ring 33.

[0033] An elastic connection is provided between the annular step 35 and the upper pressing ring 34, specifically a spring connection.

[0034] Embodiment 5, as Figure 7 shown, the demolding mechanism 4 corresponds to the pressurized forming mechanism 3, and includes a first wedge-shaped column 41, a first guide cylinder 40, a second wedge-shaped column 42, a second guide cylinder 421, a demolding seat 43 and an oil cylinder 44. The lower plane of the demolding seat 43 is fixedly connected to the upper plane of the pressing block seat 32. A horizontal oil cylinder 44 is fixedly connected to one side of the demolding seat 43. A support block 45 is fixedly connected inside the demolding seat 43. The first guide cylinder 40 horizontally penetrates the support block 45. The output shaft of the oil cylinder 44 is connected to the first wedge-shaped column 41. The first wedge-shaped column 41 is slidably arranged inside the first guide cylinder 40. A through hole is provided at one end of the first guide cylinder 40 close to the bottom of the demolding seat 43. The lower part of the through hole is connected to the second guide cylinder 421. A second wedge-shaped column 42 is slidably arranged inside the second guide cylinder 421. The axial direction of the second wedge-shaped column 42 is perpendicular to that of the first wedge-shaped column 41. The lower end of the first wedge-shaped column 41 penetrates the demolding seat 43 and is fixedly connected to the upper pressing ring 34.

[0035] The contact surface between the first wedge-shaped column 41 and the second wedge-shaped column 42 is an inclined surface. The second guide cylinder 421 is fixedly connected to the support block 45, and the lower end surface of the second guide cylinder 421 is flush with the lower end surface of the demolding seat 43. The second guide cylinder 421 is fixed in the support block 45 in the demolding seat 43 by interference fit to guide the second wedge-shaped column 42.

[0036] Specifically in use, the pressurized forming mechanism 3 is installed on the lower beam of the hydraulic press, and the demolding mechanism 4 is installed on the movable beam of the hydraulic press. Each workbench 24 in the rotary workbench mechanism 2 can rotate above the pressurized forming mechanism 3 and correspond to the demolding mechanism 4. The top of the forming mounting seat 31 corresponds to the mold hole 241 of the workbench 24. The forming mounting seat 31 plays a supporting role during pressing.

[0037] For the convenience of observing the material forming and taking out the mold, a connecting block 36 which is closed on three sides and open on one side and communicates with the pressing block seat 32 is fixedly connected to the bottom of the pressing block seat 32. A limiting column 37 is fixedly connected below the connecting block 36.

[0038] When pressing, the downward pressing of the movable beam of the hydraulic press will drive the demolding seat 43 to move downward, thereby driving the pressing block seat 32 to move downward. Finally, the lower pressing block 33 enters the mold to contact the material for pressing, and the limiting column 37 plays a limiting role.

[0039] Here, the demolding seat 43 plays a role in transmitting pressure.

[0040] When demolding is to be carried out, the output shaft of the oil cylinder 44 extends out, pushing the first wedge-shaped column 41 to move along the first guide cylinder 40. Since the first wedge-shaped column 41 and the second wedge-shaped column 42 are in inclined surface contact, the second wedge-shaped column 42 will move downward along the second guide cylinder 421, thereby driving the lower pressing ring 33 and the upper pressing ring 34 to move downward, sending the formed material downward, and then the finished product after pressing can be taken out.

[0041] In Embodiment 6, in order to ensure the stroke range of the second wedge-shaped column 42, a concave notch surface 46 is provided on one side of the lower end of the second wedge-shaped column 42, and a limiting block 47 is fixedly connected to the bottom of the demolding seat 43. The notch surface 46 is slidably connected with the limiting block 47. The second guide cylinder 421 is provided with the same notch as the second wedge-shaped column 42, which is convenient for the installation of the limiting block 47 and also convenient for the second wedge-shaped column 42 to abut against the limiting block 47 after sliding downward.

[0042] A control method includes a multi-station rotary table control system for a hydraulic press as described above. S1: First, install the molds in the mold holes 241 of each workbench 24 and fill the molds with materials. S2: The first workbench 24 rotates to the upper part of the pressure forming mechanism 3. S3: Press. S4: Demold. S5: After the first mold is demolded, the rotary table 23 starts to rotate, and the second workbench 24 rotates to the upper part of the pressure forming mechanism 3 to start pressing. S6: While the second workbench 24 is pressing, fill the first mold that has been demolded with materials. S7: After the second mold is demolded, rotate the rotary table 23 again to press the third mold, and at the same time fill the second mold with materials, and so on in a cycle until all pressing work is completed.

[0043] In the above S2, when the control system controls the first workbench 24 to rotate to the upper part of the pressure forming mechanism 3, the driving gear 13 and the driven gear 14 are not engaged. In step S3, during pressing, the driving gear 13 continues to rotate, and the push block cylinder 132 on the driving gear 13 drives the driven push block 141 to rotate. In step S4, the oil cylinder 44 pushes the first wedge-shaped column 41, and the first wedge-shaped column 41 pushes the second wedge-shaped column 42, thereby pushing the lower pressing ring 33 downward to take out the formed product. In step S5, after pressing and demolding, the controller controls the driving gear 13 to continue rotating. When the driving gear 13 and the driven gear 14 rotate to be engaged, it drives the connecting gear 15 to rotate, thereby driving the rotating gear disk 22 to rotate. When the driving gear 13 rotates to the position opposite to the intermittent surface of the driven gear 14, the second workbench 24 rotates to the upper part of the compression molding mechanism 3. When the second workbench 24 rotates from the initial position to the compression molding mechanism 3, the transmission ratio of the driving gear 13 and the rotating gear disk 22 i 总 can be expressed as: , where Z 主动 is the number of teeth of the driving gear 13, Z 旋转 is the number of teeth of the rotating gear disk 22, The rotational speed of the driving gear 13 can be expressed as: , where N is the number of workbenches 24, T 间隔 is the interval time from the start of pressing to demolding of the workbench 24, i is the transmission ratio of the driving gear 13 and the rotating gear disk 22.

[0044] In this embodiment, assume that the interval time T 间隔 from the start of pressing to demolding of the workbench 24 is 5 seconds, the number of workbenches 24 is 5, the number of teeth of the rotating gear disk 22 is 40, and the number of teeth of the driving gear 13 is 20. Then substituting into the formula: , then , After calculating the rotational speed of the driving gear 13, a program can be written in the control system to control the rotational speed of the driving gear 13 accordingly.

[0045] Working principle: The demoulding mechanism 4 is installed on the movable beam of the hydraulic press by bolts, and the pressure forming mechanism 3 is fixedly installed on the lower beam of the hydraulic press. The mold is loaded into the liner 5 in the workbench 24, and then the material is loaded. As an embodiment, the molds here are the upper mold and the lower mold, and then the gear set of the rotating workbench mechanism 2 is started to rotate, driving the workbench 24 to rotate to the pressure forming mechanism 3. At this time, the driving gear 13 just rotates to the intermittent surface of the driven gear 14, the workbench 24 will stop rotating, and the hydraulic press starts pressing. Figure 6 , the lower pressing ring 33 is pressed, and after pressing, the movable beam moves upward, driving the demoulding seat 43 upward, and the molded product moves upward with the upper mold.

[0046] At this time, the output shaft of the oil cylinder 44 in the demoulding mechanism 4 extends out, driving the first wedge-shaped column 41 to slide along the inside of the first guide cylinder 40. When it contacts the second wedge-shaped column 42, as the output shaft of the oil cylinder 44 continues to output, the first wedge-shaped column 41 will press against the second wedge-shaped column 42, and the second wedge-shaped column 42 will move downward and stop when it moves to the limit block 47. The upper pressure ring 34 also moves to the annular step 35. At this time, the molded product can be taken away. Then, the output shaft of the oil cylinder 44 retracts, and the first wedge-shaped column 41 also retracts. Because there is a spring connection between the bottom of the annular step 35 and the upper pressure ring 34, when the second wedge-shaped column 42 loses its force, the spring will drive the upper pressure ring 34 to automatically reset. Therefore, the second wedge-shaped column 42 will also be pushed to reset by the upper pressure ring 34.

[0047] After the demoulding action is completed, the push block cylinder 132 pushes the driven push block 141, the driving gear 13 and the driven gear 14 are meshed, and the rotating gear plate 22 rotates another workbench 24 to correspond to the press molding mechanism 3, and the pressing operation is carried out again, and the pressing is circulated in sequence until all the pressing operations are completed.

[0048] Robots can be used to load materials into the mold, saving labor costs.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-station rotary table control system for a hydraulic press, characterized in that: Including: A driving mechanism (1), a rotary table mechanism (2), a pressing and forming mechanism (3), and a demolding mechanism (4); The driving mechanism (1) includes a motor (11), a speed reducer, a base (12), and a gear set. A gear set is arranged on the base (12). The gear set includes a driving gear (13), a driven gear (14), and a connecting gear (15). The motor (11) is connected to the speed reducer. The driving shaft of the speed reducer is connected to the driving gear (13). The driving gear (13) meshes with the driven gear (14). The driven gear (14) meshes with the connecting gear (15); The rotary table mechanism (2) includes a support pedestal (21), a rotary gear disc (22), a rotary table (23), and a workbench (24). A rotary gear disc (22) is connected above the support pedestal (21). The upper end of the rotary gear disc (22) is connected to a rotary table (23). A plurality of workbenches (24) for placing molds are evenly distributed around the rotary table (23). The rotary gear disc (22) meshes with the connecting gear (15). The rotary table mechanism (2) rotates and operates cyclically driven by the driving mechanism (1); The pressing and forming mechanism (3) corresponds to the workbench (24) and includes a forming mounting seat (31), a pressing block seat (32), a lower pressing ring (33), and an upper pressing ring (34). The forming mounting seat (31) corresponds to the pressing block seat (32). A through channel is arranged inside the pressing block seat (32). The lower pressing ring (33) is fixedly connected to the lower part of the upper pressing ring (34). The lower pressing ring (33) and the upper pressing ring (34) are slidably arranged in the channel of the pressing block seat (32); The demolding mechanism (4) corresponds to the pressing and forming mechanism (3) and includes a demolding seat (43) and an oil cylinder (44). The lower plane of the demolding seat (43) is fixedly connected to the upper plane of the pressing block seat (32). A horizontal oil cylinder (44) is fixedly connected to one side of the demolding seat (43). A support block (45) is fixedly connected inside the demolding seat (43). A demolding device is arranged inside the support block (45); It further includes a controller. The driving mechanism (1), the rotary table mechanism (2), the pressing and forming mechanism (3), and the demolding mechanism (4) are electrically connected to the controller.

2. The control system of the multi-station rotary worktable for a hydraulic press according to claim 1, characterized in that, The demoulding device includes a first wedge-shaped column (41), a first guide cylinder (40), a second wedge-shaped column (42), and a second guide cylinder (421). The first guide cylinder (40) horizontally penetrates through the support block (45). The output shaft of the oil cylinder (44) is connected to the first wedge-shaped column (41). The first wedge-shaped column (41) is slidably arranged inside the first guide cylinder (40). A through hole is provided at one end of the first guide cylinder (40) close to the bottom of the demoulding seat (43). The lower part of the through hole is connected to the second guide cylinder (421). A second wedge-shaped column (42) is slidably arranged inside the second guide cylinder (421). The axial direction of the second wedge-shaped column (42) is perpendicular to that of the first wedge-shaped column (41). The upper part of the second wedge-shaped column (42) is slidably connected to the lower part of the demoulding seat (43), and the bottom of the second wedge-shaped column (42) is fixedly connected to the upper pressing ring (34). The contact surface between the first wedge-shaped column (41) and the second wedge-shaped column (42) is an inclined surface. The second guide cylinder (421) is fixedly connected to the support block (45), and the lower end surface of the second guide cylinder (421) is flush with the lower end surface of the demoulding seat (43).

3. The control system of the multi-station rotary worktable for a hydraulic press according to claim 1, wherein: A driving push block (131) is fixedly connected to the top of the driving gear (13). Push block cylinders (132) are fixedly arranged at both ends of the driving push block (131). A driven push block (141) is fixedly arranged at the top of the driven gear (14).

4. A multi-station rotary table control system for a hydraulic press according to claim 3, characterized in that: The shape of the driven push block (141) is like a "racket". The arc surface at the handle of the "racket" is adapted to the outer arc surface of the push block cylinder (132). The distance between the closest end faces of the two push block cylinders (132) is greater than the diameter of the largest part of the driven push block (141).

5. The control system of a multi-station rotary worktable for a hydraulic press according to claim 3, characterized in that: The driven gear (14) is an intermittent gear, and the intermittent surface of the intermittent gear corresponds to the extending direction of the driven push block (141).

6. The control system of a multi-station rotary table for a hydraulic press according to claim 1, characterized in that: The number of the workbenches (24) is 5. Mold holes (241) for placing the lining cylinders (5) are provided on the end faces of the workbenches (24). Connecting rods (25) are arranged between adjacent two workbenches (24).

7. A multi-station rotary table control system for a hydraulic press according to claim 1, characterized in that: An annular step (35) is provided at the lower end of the channel of the pressing block seat (32). The upper end part of the lower pressing ring (33) is provided with an annular boss, and the annular boss can abut against the annular step (35). The lower end of the lower pressing ring (33) slides in the channel of the pressing block seat (32). The outer diameter of the upper pressing ring (34) is smaller than the inner diameter of the annular step (35), and an elastic connection is provided between the annular step (35) and the upper pressing ring (34).

8. The control system of the multi-station rotary worktable for a hydraulic press according to claim 2, characterized in that: A concave notch surface (46) is provided on one side of the lower end of the second wedge-shaped column (42). A limiting block (47) is fixedly connected to the bottom of the demoulding seat (43), and the limiting surface is slidably connected to the limiting block (47).

9. A control method, comprising a multi-station rotary table control system for a hydraulic press according to any one of claims 1-8, characterized in that: It includes the following steps: S1: First, install the molds in the mold holes of each workbench (24) and fill the molds with materials; S2: Rotate the first workbench (24) above the pressing and forming mechanism (3); S3: Press; S4: Demould; S5: After the first mold is demolded, the rotating table (23) starts to rotate, and the second workbench (24) rotates above the compression molding mechanism (3) to start pressing. S6: While the second workbench (24) is pressing, the first mold after demolding is filled with material. S7: After the second mold is demolded, the rotating table (23) is rotated again to press the third mold, and at the same time, the second mold is filled with material. This cycle continues until all pressing operations are completed.

10. A control method according to claim 9, characterized in that: In S2, when the controller controls the first workbench to rotate above the compression molding mechanism (3), the driving gear (13) and the driven gear (14) are not engaged. In S3, during pressing, the driving gear (13) continues to rotate, and the push block cylinder (132) on the driving gear (13) drives the driven push block (141) to rotate. In S4, the oil cylinder (44) pushes the first wedge-shaped column (41), and the first wedge-shaped column (41) pushes the second wedge-shaped column (42), thereby pushing the lower pressing ring (33) downward to take out the molded product. In S5, after the first mold is pressed and demolded, the controller controls the driving gear (13) to continue rotating. When the driving gear (13) and the driven gear (14) rotate to be engaged, it drives the connecting gear (15) to rotate, thereby driving the rotating gear disk (22) to rotate. When the driving gear (13) rotates to be opposite to the intermittent surface of the driven gear (14), the second workbench rotates above the compression molding mechanism (3). When the second workbench rotates from the initial position to the compression molding mechanism (3), the transmission ratio of the driving gear (13) and the rotating gear disc (22) i 总 can be expressed as: , where Z 主动 is the number of teeth of the driving gear (13), and Z 旋转 is the number of teeth of the rotating gear disc (22). The rotational speed of the driving gear (13) can be expressed as: ， Among them, N is the number of workbenches (24), and T 间隔 is the interval time from the start of pressing to demolding for one workbench (24).

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