Four-column hydraulic machine capable of clamping workpieces of multiple models

Abstract

The utility model relates to the field of hydraulic machines, in particular to a four-column hydraulic machine capable of clamping multiple types of workpieces. The technical problems that in the prior art, a four-column hydraulic press is usually difficult to achieve rapid clamping and positioning of workpieces of different models, and a stamping mechanism is inconvenient to rapidly replace and fix are solved. According to the technical scheme, the four-column hydraulic machine capable of clamping the multiple types of workpieces comprises a supporting assembly; the punching device further comprises a punching assembly, a mounting assembly, a moving assembly, a clamping assembly and a waste collecting assembly. The limiting block is moved to the inner wall of the second groove body, then the first electric cylinder is started to enable the output shaft of the first electric cylinder to enter the inner wall of the groove, the mounting block can be conveniently and rapidly fixed to the inner wall of the first groove body, and the second electric cylinder is started to enable the clamping block to move; workpieces of different models can be quickly clamped and fixed among a plurality of rubber blocks, use is convenient, and the technical problem is solved.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic presses, and in particular relates to a four-column hydraulic press which can clamp workpieces of various models. Background Art

[0002] In the field of industrial manufacturing, it is usually necessary to clamp and process various types of workpieces. Four-column hydraulic presses have been widely used in the processing and forming of various metal and non-metal materials due to their stable structure, strong load-bearing capacity, and easy operation. However, most of the existing four-column hydraulic presses are single-model equipment, suitable for processing specific types of workpieces. When processing multiple types of workpieces, it is often necessary to equip a variety of fixtures and adjustment equipment. The four-column hydraulic presses in the prior art are usually difficult to achieve rapid clamping and positioning of workpieces of different models, and are not convenient for rapid replacement and fixation of the stamping mechanism, which needs further improvement. Utility Model Content

[0003] In order to overcome the problem that the four-column hydraulic press in the prior art is usually difficult to achieve rapid clamping and positioning of workpieces of different models, and it is not convenient to quickly replace and fix the stamping mechanism.

[0004] The technical solution of the utility model is: a four-column hydraulic press capable of clamping various types of workpieces, comprising a support assembly; also comprising a stamping assembly, a mounting assembly, a moving assembly, a clamping assembly and a waste collecting assembly; a stamping assembly is arranged at the upper end of the support assembly; a mounting assembly is arranged at the lower end of the stamping assembly; a moving assembly for moving the clamping assembly is arranged at the upper end of the support assembly; a clamping assembly is arranged on the moving assembly; a waste collecting assembly for collecting waste is arranged on the support assembly.

[0005] Preferably, when in use, the workpiece is placed in the clamping assembly, the clamping assembly is opened to clamp the workpiece, the moving assembly is opened to move the clamping assembly to directly below the stamping assembly, the mounting assembly is installed on the stamping assembly, and then the stamping assembly is opened to use the mounting assembly to quickly stamp the workpiece, thereby solving the problem that the four-column hydraulic press in the prior art is usually difficult to achieve rapid clamping and positioning of workpieces of different models, and is inconvenient to quickly replace and fix the stamping mechanism.

[0006] Preferably, the support assembly includes a support platform, a support block and a guide rod; the support block is fixedly connected to the upper end of the support platform; the guide rods are fixedly connected to the four corner edges of the upper end of the support block, and the setting of the guide rods is conducive to the stable movement of the stamping assembly.

[0007] Preferably, the stamping assembly includes a first fixed block, a first through hole, a hydraulic cylinder, a lifting block, a second through hole and a connecting column; a first fixed block is arranged above the support table; first through holes are opened through the four corner edges at the upper and lower ends of the first fixed block; the inner wall of the first through hole is fixedly connected to the outer wall of the guide rod; a hydraulic cylinder is fixedly connected to the center of the upper end of the first fixed block; the lower end of the output shaft of the hydraulic cylinder passes through the first fixed block and is fixedly connected to the lifting block; second through holes are opened through the four corner edges at the upper and lower ends of the lifting block; the inner wall of the second through hole and the inner wall of the first through hole are in the same plane; a connecting column is fixedly connected to the lower end of the lifting block, and when the installation assembly needs to be moved up and down, the hydraulic cylinder is turned on to move the lifting block up and down, and the lifting block will move stably along the outer walls of the four guide rods, which will drive the installation assembly to move stably in the vertical direction.

[0008] Preferably, the mounting assembly includes a second fixed block, a first slot body, a second slot body, a first electric cylinder, a mounting block, a limit block, a groove, a fixed column, a stamping column, a fixed ring, a spring, a pressure plate, a limit column and a third through hole; the lower end of the connecting column is fixedly connected to the second fixed block; the lower end of the second fixed block is provided with a first slot body; the front and rear ends of the inner wall of the first slot body are provided with second slot bodies; the front and rear ends of the second fixed block are fixedly connected to the first electric cylinder distributed evenly; the inner wall of the first slot body is movably provided with a mounting block; the front and rear ends of the mounting block are fixedly connected to the limit block; the limit block is adapted to the second slot body; the end of the limit block away from the mounting block is provided with evenly distributed grooves; the output shaft of the first electric cylinder passes through the wall layer of the second fixed block and extends to the inner wall of the groove; the center of the lower end of the mounting block is fixedly connected to evenly distributed fixed columns; the lower end of the fixing column is fixedly connected to a stamping The cam is secured to the upper and lower ends of the workpiece and is provided with a third through hole which is evenly distributed; the inner wall of the third through hole and the inner wall of the fixing ring are in the same plane; the upper end of the outer wall of the limiting column passes through the fixing ring and extends to the inner wall of the third through hole; the lower end surface of the pressure plate is located below the lower end surface of the stamping column, and the limiting block is moved to the inner wall of the second groove body, and then the first electric cylinder is opened so that the output shaft of the first electric cylinder enters the inner wall of the groove, so that the mounting block can be quickly fixed to the inner wall of the first groove body, and when the mounting block moves downward, multiple pressure plates will first be squeezed on the upper end of the workpiece, and the limiting column will extend through the fixing ring to the inner wall of the third through hole, and finally a circular hole can be punched on the workpiece using the stamping column.

[0009] Preferably, the moving assembly includes a fixed seat, a servo motor, a screw rod, a threaded sleeve, a moving block, a bearing seat and a waste trough; the support block is in a "U" shape; the inner wall of the support block is fixedly connected to the fixed seat and the bearing seat; the right end of the fixed seat is fixedly connected to the servo motor; the left end of the output shaft of the servo motor passes through the fixed seat and is fixedly connected to the screw rod; the outer wall of the left end of the screw rod is in contact with the inner wall of the bearing seat; the outer wall of the screw rod is movably mounted with a threaded sleeve; the upper end of the threaded sleeve is fixedly connected to the moving block; a waste trough is penetrated through the lower end surface of the inner wall of the support block, and when the clamping assembly needs to be moved, the servo motor is turned on to rotate the threaded sleeve, and the threaded sleeve will move along the outer wall of the threaded rod, thereby driving the moving block to move, which is convenient for adjusting the left and right movement of the clamping assembly.

[0010] Preferably, the clamping assembly includes a movable plate, a third trough body, a second electric cylinder, a clamping block, a rubber block and a fourth trough body; the movable plate is fixedly connected to the upper end of the movable block; a third trough body is provided at the upper end of the movable plate; the front and rear end surfaces of the inner wall of the third trough body are fixedly connected to evenly distributed second electric cylinders; the clamping block is fixedly connected to the output shaft of the second electric cylinder; the end of the clamping block close to the center of the movable plate is fixedly connected to evenly distributed rubber blocks; a fourth trough body is provided through the center of the lower end surface of the inner wall of the third trough body; the rubber block is arc-shaped, and since a plurality of arc-shaped rubber blocks are provided, the second electric cylinder is turned on to move the clamping block, so that workpieces of different types can be quickly clamped and fixed between the plurality of rubber blocks, which is convenient to use.

[0011] Preferably, the waste collection assembly includes a first discharge trough, a second discharge trough, a third discharge trough, a collection box and a handle; a first discharge trough is opened at the right end of the support platform; a second discharge trough is opened through the lower end of the first discharge trough; a third discharge trough is opened at the right end of the support platform; the third discharge trough and the second discharge trough are interconnected; a collection box is movably provided on the inner wall of the third discharge trough; a handle is fixedly connected to the right end of the collection box; the lower end of the waste trough and the interior of the first discharge trough are interconnected, and the punching debris falling into the waste trough will fall into the interior of the first discharge trough, and then fall into the interior of the collection box through the second discharge trough, so as to facilitate the centralized collection of the punching debris.

[0012] Beneficial effects of the utility model:

[0013] 1. By moving the limit block to the inner wall of the second slot body, and then opening the first electric cylinder so that the output shaft of the first electric cylinder enters the inner wall of the groove, the mounting block can be quickly fixed to the inner wall of the first slot body. When the mounting block moves downward, multiple pressure plates will first squeeze the upper end of the workpiece, and the limit column will pass through the fixing ring and extend to the inner wall of the third through hole. Finally, a round hole can be punched on the workpiece using the punching column, which solves the problem that the four-column hydraulic press in the prior art is inconvenient for quick replacement and fixing of the punching mechanism;

[0014] 2. By setting up multiple arc-shaped rubber blocks and opening the second electric cylinder to move the clamping block, workpieces of different models can be quickly clamped and fixed between the multiple rubber blocks, which is easy to use and solves the problem that the four-column hydraulic press in the prior art is usually difficult to quickly clamp and position workpieces of different models;

[0015] 3. When the clamping assembly needs to be moved, turn on the servo motor to rotate the screw rod, and the wire sleeve will move along the outer wall of the screw rod, thereby driving the moving block to move, so as to facilitate the left and right movement adjustment of the clamping assembly. The punching debris falling into the waste trough will fall into the first discharge trough, and then fall into the collection box through the second discharge trough, so as to facilitate the centralized collection of the punching debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a three-dimensional structural schematic diagram of a four-column hydraulic press capable of clamping various types of workpieces according to the utility model;

[0017] Figure 2 What is shown is a three-dimensional structural schematic diagram of a support component and a waste collection component of a four-column hydraulic press capable of clamping multiple types of workpieces according to the utility model;

[0018] Figure 3 What is shown is a three-dimensional structural schematic diagram of a stamping assembly of a four-column hydraulic press that can clamp multiple types of workpieces according to the utility model;

[0019] Figure 4 The present invention shows a three-dimensional split structure schematic diagram of the installation assembly of a four-column hydraulic press capable of clamping multiple types of workpieces;

[0020] Figure 5 What is shown is a three-dimensional structural schematic diagram of a mounting block of a four-column hydraulic press capable of clamping multiple types of workpieces according to the utility model;

[0021] Figure 6 What is shown is a three-dimensional structural schematic diagram of a moving component of a four-column hydraulic press capable of clamping multiple types of workpieces of the utility model;

[0022] Figure 7 What is shown is a three-dimensional structural schematic diagram of a clamping assembly of a four-column hydraulic press of the present invention which can clamp various types of workpieces.

[0023] The marks in the attached drawings are: 1. Support assembly; 101. Support platform; 102. Support block; 103. Guide rod; 2. Stamping assembly; 201. First fixed block; 202. First through hole; 203. Hydraulic cylinder; 204. Lifting block; 205. Second through hole; 206. Connecting column; 3. Mounting assembly; 301. Second fixed block; 302. First slot; 303. Second slot; 304. First electric cylinder; 305. Mounting block; 306. Limiting block; 307. Groove; 308. Fixed column; 309. Stamping column; 310. Fixed ring; 311. Spring; 312. 12. Pressure plate; 313. Limiting column; 314. Third through hole; 4. Moving assembly; 401. Fixed seat; 402. Servo motor; 403. Screw rod; 404. Sleeve; 405. Moving block; 406. Bearing seat; 407. Waste trough; 5. Clamping assembly; 501. Moving plate; 502. Third trough body; 503. Second electric cylinder; 504. Clamping block; 505. Rubber block; 506. Fourth trough body; 6. Waste collecting assembly; 601. First discharge trough; 602. Second discharge trough; 603. Third discharge trough; 604. Collection box; 605. Handle. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1 The utility model provides an embodiment: a four-column hydraulic press capable of clamping various types of workpieces, comprising a support assembly 1; further comprising a stamping assembly 2, a mounting assembly 3, a moving assembly 4, a clamping assembly 5 and a waste collecting assembly 6; the upper end of the support assembly 1 is provided with the stamping assembly 2; the lower end of the stamping assembly 2 is provided with the mounting assembly 3; the upper end of the support assembly 1 is provided with a moving assembly 4 for moving the clamping assembly 5; the moving assembly 4 is provided with the clamping assembly 5; the support assembly 1 is provided with a waste collecting assembly 6 for collecting waste.

[0026] See also Figure 2 In this embodiment, the support assembly 1 includes a support platform 101, a support block 102 and a guide rod 103; the upper end of the support platform 101 is fixedly connected to the support block 102; the guide rod 103 is fixedly connected to the four corners of the upper end of the support block 102.

[0027] See also Figure 3In this embodiment, the stamping assembly 2 includes a first fixed block 201, a first through hole 202, a hydraulic cylinder 203, a lifting block 204, a second through hole 205 and a connecting column 206; a first fixed block 201 is arranged above the support platform 101; first through holes 202 are penetrated at the four corners of the upper and lower ends of the first fixed block 201; the inner wall of the first through hole 202 is fixedly connected to the outer wall of the guide rod 103; a hydraulic cylinder 203 is fixedly connected to the center of the upper end of the first fixed block 201; the lower end of the output shaft of the hydraulic cylinder 203 penetrates the first fixed block 201 and is fixedly connected to the lifting block 204; second through holes 205 are penetrated at the four corners of the upper and lower ends of the lifting block 204; the inner wall of the second through hole 205 and the inner wall of the first through hole 202 are in the same plane; a connecting column 206 is fixedly connected to the lower end of the lifting block 204.

[0028] See also Figure 4 and 5 In this embodiment, the mounting assembly 3 includes a second fixed block 301, a first slot body 302, a second slot body 303, a first electric cylinder 304, a mounting block 305, a limit block 306, a groove 307, a fixed column 308, a stamping column 309, a fixed ring 310, a spring 311, a pressure plate 312, a limit column 313 and a third through hole 314; the lower end of the connecting column 206 is fixedly connected to the second fixed block 301; the lower end of the second fixed block 301 is provided with a first slot body 302; the front and rear ends of the inner wall of the first slot body 302 are provided with a second slot body 303; the front and rear ends of the second fixed block 301 are fixedly connected to the uniformly distributed first electric cylinder 304; the inner wall of the first slot body 302 is movably provided with a mounting block 305; the front and rear ends of the mounting block 305 are fixedly connected to the limit block 306; the limit block 306 is adapted to the second slot body 303; the limit block 306 is away from the mounting block One end of the mounting block 305 is provided with evenly distributed grooves 307; the output shaft of the first electric cylinder 304 penetrates the wall layer of the second fixing block 301 and extends to the inner wall of the groove 307; the center of the lower end of the mounting block 305 is fixedly connected with evenly distributed fixing columns 308; the lower end of the fixing column 308 is fixedly connected with a stamping column 309; the lower end of the mounting block 305 is fixedly connected with evenly distributed fixing rings 310; the lower end of the fixing ring 310 is fixedly connected with a spring 311; the spring A pressure plate 312 is fixedly connected to the lower end of 311; a limiting column 313 is fixedly connected to the upper end of the pressure plate 312; evenly distributed third through holes 314 are penetrated through the upper and lower ends of the mounting block 305; the inner wall of the third through hole 314 and the inner wall of the fixing ring 310 are in the same plane; the upper end of the outer wall of the limiting column 313 passes through the fixing ring 310 and extends to the inner wall of the third through hole 314; the lower end surface of the pressure plate 312 is located below the lower end surface of the stamping column 309.

[0029] See also Figure 6In this embodiment, the moving component 4 includes a fixed seat 401, a servo motor 402, a screw rod 403, a threaded sleeve 404, a moving block 405, a bearing seat 406 and a waste groove 407; the support block 102 is "U"-shaped; the inner wall of the support block 102 is fixedly connected with the fixed seat 401 and the bearing seat 406; the right end of the fixed seat 401 is fixedly connected with the servo motor 402; the left end of the output shaft of the servo motor 402 passes through the fixed seat 401 and is fixedly connected with the screw rod 403; the outer wall of the left end of the screw rod 403 is in contact with the inner wall of the bearing seat 406; the outer wall of the screw rod 403 is movably mounted with the threaded sleeve 404; the upper end of the threaded sleeve 404 is fixedly connected with the moving block 405; the lower end surface of the inner wall of the support block 102 is penetrated by a waste groove 407.

[0030] See also Figure 7 In this embodiment, the clamping assembly 5 includes a moving plate 501, a third slot body 502, a second electric cylinder 503, a clamping block 504, a rubber block 505 and a fourth slot body 506; the upper end of the moving block 505 is fixedly connected to the moving plate 501; the upper end of the moving plate 501 is provided with a third slot body 502; the front and rear end surfaces of the inner wall of the third slot body 502 are fixedly connected to the second electric cylinder 503 which is evenly distributed; the clamping block 504 is fixedly connected to the output shaft of the second electric cylinder 503; the end of the clamping block 504 close to the center of the moving plate 501 is fixedly connected to the rubber block 505 which is evenly distributed; the fourth slot body 506 is provided through the center of the lower end surface of the inner wall of the third slot body 502; the rubber block 505 is arc-shaped.

[0031] See also Figure 2 and 6 In this embodiment, the waste collection assembly 6 includes a first discharge trough 601, a second discharge trough 602, a third discharge trough 603, a collection box 604 and a handle 605; the first discharge trough 601 is opened at the right end of the support platform 101; the second discharge trough 602 is opened through the lower end of the first discharge trough 601; the third discharge trough 603 is opened at the right end of the support platform 101; the third discharge trough 603 and the second discharge trough 602 are interconnected; the inner wall of the third discharge trough 603 is movably provided with a collection box 604; the right end of the collection box 604 is fixedly connected to a handle 605; the lower end of the waste trough 407 and the interior of the first discharge trough 601 are interconnected.

[0032] When working, first, the limit block 306 is moved to the inner wall of the second slot body 303, and then the first electric cylinder 304 is opened so that the output shaft of the first electric cylinder 304 enters the inner wall of the groove 307, and the mounting block 305 can be quickly fixed on the inner wall of the first slot body 302;

[0033] When the clamping assembly 5 needs to be moved, the servo motor 402 is turned on to rotate the screw rod 403, and the thread sleeve 404 moves along the outer wall of the screw rod 403, thereby driving the moving block 405 to move, so as to facilitate the left and right movement adjustment of the clamping assembly 5. The workpiece to be processed is placed between the clamping blocks 504 arranged opposite to each other, and then the second electric cylinder 503 arranged opposite to each other is turned on to move the clamping block 504, so that workpieces of different models can be quickly clamped and fixed between multiple rubber blocks 505;

[0034] Next, after the moving assembly 4 is turned on to move the workpiece to the punching position, the hydraulic cylinder 203 is turned on to move the lifting block 204 up and down, driving the mounting block 305 to move downward. When the mounting block 305 moves downward, the plurality of pressure plates 312 will first be pressed on the upper end of the workpiece, and the limiting column 313 will pass through the fixing ring 310 and extend to the inner wall of the third through hole 314. Finally, a circular hole can be punched on the workpiece using the punching column 309.

[0035] The waste chips will fall into the waste trough 407 through the fourth trough body 506, and then the punching chips will fall into the first discharge trough 601, and then fall into the collection box 604 through the second discharge trough 602, so as to facilitate the centralized collection of the punching chips.

[0036] Through the above steps, when in use, the workpiece is placed in the clamping assembly 5, and after the clamping assembly 5 is opened to clamp the workpiece, the moving assembly 4 is opened to move the clamping assembly 5 to the bottom of the stamping assembly 2, the mounting assembly 3 is installed on the stamping assembly 2, and then the stamping assembly 2 is opened to use the mounting assembly 3 to quickly stamp the workpiece, thereby solving the problem that the four-column hydraulic press in the prior art is usually difficult to achieve rapid clamping and positioning of workpieces of different models, and is inconvenient to quickly replace and fix the stamping mechanism.

[0037] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A four-column hydraulic press capable of clamping various types of workpieces, comprising a support assembly (1); characterized in that: The invention also comprises a punching assembly (2), a mounting assembly (3), a moving assembly (4), a clamping assembly (5) and a waste collection assembly (6); the upper end of the support assembly (1) is provided with the punching assembly (2); the lower end of the punching assembly (2) is provided with the mounting assembly (3); the upper end of the support assembly (1) is provided with a moving assembly (4) for moving the clamping assembly (5); the moving assembly (4) is provided with the clamping assembly (5); and the support assembly (1) is provided with a waste collection assembly (6) for collecting waste.

2. A four-column hydraulic press capable of clamping multiple types of workpieces according to claim 1, characterized in that: The support assembly (1) comprises a support platform (101), a support block (102) and a guide rod (103); the upper end of the support platform (101) is fixedly connected to the support block (102); the guide rod (103) is fixedly connected to the four corner edges of the upper end of the support block (102).

3. A four-column hydraulic press capable of clamping multiple types of workpieces according to claim 2, characterized in that: The stamping assembly (2) comprises a first fixed block (201), a first through hole (202), a hydraulic cylinder (203), a lifting block (204), a second through hole (205) and a connecting column (206); the first fixed block (201) is arranged above the support platform (101); first through holes (202) are provided at the four corner edges of the upper and lower ends of the first fixed block (201); the inner wall of the first through hole (202) is fixedly connected to the outer wall of the guide rod (103); the hydraulic cylinder (203) is fixedly connected to the center of the upper end of the first fixed block (201); The lower end of the output shaft of the hydraulic cylinder (203) passes through the first fixed block (201) and is fixedly connected to a lifting block (204); second through holes (205) are formed through the edges of the four corners at the upper and lower ends of the lifting block (204); the inner wall of the second through hole (205) and the inner wall of the first through hole (202) are in the same plane; and the lower end of the lifting block (204) is fixedly connected to a connecting column (206).

4. A four-column hydraulic press capable of clamping multiple types of workpieces according to claim 3, characterized in that: The mounting assembly (3) comprises a second fixing block (301), a first slot body (302), a second slot body (303), a first electric cylinder (304), a mounting block (305), a limiting block (306), a groove (307), a fixing column (308), a punching column (309), a fixing ring (310), a spring (311), a pressure plate (312), a limiting column (313) and a third through hole (314); the lower end of the connecting column (206) is fixedly connected to the second fixing block (301); the lower end of the second fixing block (301) is provided with a first slot body (302); the front and rear ends of the inner wall of the first slot body (302) are provided with a second slot body (303); the front and rear ends of the second fixing block (301) are fixedly connected to uniformly distributed A first electric cylinder (304); a mounting block (305) is movably provided on the inner wall of the first trough body (302); limit blocks (306) are fixedly connected to the front and rear ends of the mounting block (305); the limit block (306) is adapted to the second trough body (303); an end of the limit block (306) away from the mounting block (305) is provided with evenly distributed grooves (307); the output shaft of the first electric cylinder (304) penetrates the wall layer of the second fixed block (301) and extends to the inner wall of the groove (307); the center of the lower end of the mounting block (305) is fixedly connected to evenly distributed fixing columns (308); the lower end of the fixing column (308) is fixedly connected to a stamping column (309); the lower end of the mounting block (305) is fixedly connected to evenly distributed fixing rings (310); The lower end of the fixing ring (310) is fixedly connected to a spring (311); the lower end of the spring (311) is fixedly connected to a pressure plate (312); the upper end of the pressure plate (312) is fixedly connected to a limiting column (313); the upper and lower ends of the mounting block (305) are penetrated by evenly distributed third through holes (314); the inner wall of the third through hole (314) and the inner wall of the fixing ring (310) are in the same plane; the upper end of the outer wall of the limiting column (313) passes through the fixing ring (310) and extends to the inner wall of the third through hole (314); the lower end surface of the pressure plate (312) is located below the lower end surface of the stamping column (309).

5. The four-column hydraulic press capable of clamping multiple types of workpieces according to claim 2, characterized in that: The moving assembly (4) comprises a fixed seat (401), a servo motor (402), a screw rod (403), a threaded sleeve (404), a moving block (405), a bearing seat (406) and a waste groove (407); the support block (102) is in a "U" shape; the inner wall of the support block (102) is fixedly connected with the fixed seat (401) and the bearing seat (406); the right end of the fixed seat (401) is fixedly connected with the servo motor (402); the left end of the output shaft of the servo motor (402) passes through the fixed seat (401) and is fixedly connected with the screw rod (403); the outer wall of the left end of the screw rod (403) is in contact with the inner wall of the bearing seat (406); the outer wall of the screw rod (403) is movably mounted with the threaded sleeve (404); the upper end of the threaded sleeve (404) is fixedly connected with the moving block (405); and the lower end surface of the inner wall of the support block (102) is penetrated and provided with a waste groove (407).

6. A four-column hydraulic press capable of clamping multiple types of workpieces according to claim 5, characterized in that: The clamping assembly (5) comprises a moving plate (501), a third slot body (502), a second electric cylinder (503), a clamping block (504), a rubber block (505) and a fourth slot body (506); the upper end of the moving block (505) is fixedly connected to the moving plate (501); the upper end of the moving plate (501) is provided with a third slot body (502); the front and rear end surfaces of the inner wall of the third slot body (502) are fixedly connected to the second electric cylinder (503) which is evenly distributed; the output shaft of the second electric cylinder (503) is fixedly connected to the clamping block (504); one end of the clamping block (504) close to the center of the moving plate (501) is fixedly connected to the rubber blocks (505) which are evenly distributed; the center of the lower end surface of the inner wall of the third slot body (502) is provided with a fourth slot body (506) which penetrates; and the rubber block (505) is arc-shaped.

7. A four-column hydraulic press capable of clamping multiple types of workpieces according to claim 5, characterized in that: The waste collection assembly (6) comprises a first discharge trough (601), a second discharge trough (602), a third discharge trough (603), a collection box (604) and a handle (605); the first discharge trough (601) is provided at the right end of the support platform (101); the second discharge trough (602) is provided through the lower end of the first discharge trough (601); the third discharge trough (603) is provided at the right end of the support platform (101); the third discharge trough (603) and the second discharge trough (602) are interconnected; the collection box (604) is movably provided on the inner wall of the third discharge trough (603); the handle (605) is fixedly connected to the right end of the collection box (604); the lower end of the waste trough (407) and the interior of the first discharge trough (601) are interconnected.

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