A four-column hydraulic press

Abstract

The present invention relates to the technical field related to four-column hydraulic presses, and specifically provides a four-column hydraulic press, comprising a platform, a control box, a top beam, a sliding beam, a main hydraulic device, four support columns, and a quick-flushing oil tank. The four support columns are respectively located on the upper surface of the platform and close to each corner position, the top of the sliding beam slides together on the outside of the four support columns through the main hydraulic device, the top beam is installed at the upper end of the four support columns, the quick-flushing oil tank is located on the upper surface of the top beam, the main hydraulic device is fixedly arranged in the middle of the inner side of the top beam, one end of the quick-flushing oil tank is connected to the control box through a connectingly installed oil pipe, the main hydraulic device is electrically connected to the control box, and guide rods are respectively connected to both ends of the outer wall of one side of the platform. The present invention can facilitate the hydraulic press to feed materials, and can be adjusted according to actual needs, and the bottom of the movable beam is cleaned after work to reduce the adhesion of stubborn metal chips.

Description

Technical Field

[0001] The invention relates to the technical field related to four-column hydraulic machine processing, and specifically provides a four-column hydraulic machine. Background Art

[0002] The four-column hydraulic press is a common type of hydraulic press, which is often used in the stamping, bending, stretching and other processing of metal materials. It is supported by four vertical hydraulic cylinders that slide up and down the worktable, and the processing process is completed through the force provided by the hydraulic system;

[0003] When operating metal sheets and metal blocks, since the metal sheets themselves have a certain weight, it will take a lot of effort to adjust them when transporting them to the platform. After the operation, the bottom of the movable beam will be stuck with a lot of metal debris under the action of greater pressure. If it is not cleaned in time, it will not only damage the bottom surface of the movable beam but also affect the processing of the metal sheets. For this reason, we need to improve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology and to propose a four-column hydraulic press.

[0005] To achieve the above objectives, the present invention provides a four-column hydraulic press, comprising a platform, a control box, a top beam, a sliding beam, a main hydraulic device, four support columns, and a quick-flushing oil tank, the four support columns are respectively located on the upper surface of the platform and close to each corner position, the top of the sliding beam slides together on the outside of the four support columns through the main hydraulic device, the top beam is installed at the upper ends of the four support columns, the quick-flushing oil tank is located on the upper surface of the top beam, the main hydraulic device is fixedly arranged in the middle of the inner side of the top beam, one end of the quick-flushing oil tank is connected to the control box through an oil pipe installed in a connecting manner, the main hydraulic device is electrically connected to the control box, the two ends of the outer wall of one side of the platform are respectively connected to guide rods, the two guide rods are connected to push rods through a push-pull mechanism, the upper surface of one end of the push rod is fixedly connected to an I-shaped frame, a slide groove is provided in the middle of the inner side of the I-shaped frame, a supporting mechanism is arranged on the outside of the I-shaped frame, a propulsion mechanism is arranged on the outside of one end of the push rod, and a chip cleaning mechanism is arranged on the upper part of the outer side of the propulsion mechanism.

[0006] Preferably, the push-pull mechanism comprises a third hydraulic cylinder fixedly mounted in the middle of the outer side of one end of the platform, the telescopic end of the third hydraulic cylinder is connected to the outer side of the push rod, and the two ends of the push rod slide on the outer side of the guide rod respectively.

[0007] Preferably, the supporting mechanism includes rotating shafts rotatably installed on the inner sides of both ends of the I-shaped frame, and first hydraulic cylinders are rotatably installed on the outer sides of the two rotating shafts. The telescopic ends of the two first hydraulic cylinders are commonly connected to an extension seat, and a friction assembly is provided at the lower outer side of one end of the extension seat. Eaves panels extend from the outer sides of both ends of the I-shaped frame, and the lower surface of the first hydraulic cylinder is in active contact with the upper surfaces of the two eaves panels.

[0008] Preferably, the abutting assembly includes a holder fixedly mounted below the outer side of one end of the extension seat, and the inner sides of both ends of the holder are connected to a scraper via threaded fixing screws, and the scraper slides against the upper surface of the platform.

[0009] Preferably, the propulsion mechanism includes a screw rod rotatably mounted on the inner side of one end of the push rod, an L-shaped frame is fixedly connected to the outer side of the one end of the push rod and close to the lower position of the screw rod, one end of the screw rod passes through the outer side of the L-shaped frame and the end is connected to a first motor, and the first motor is fixedly mounted on the outer side of the L-shaped frame.

[0010] Preferably, a moving block is threadedly connected to the outer side of the screw rod, the lower surface of the moving block is slidably fitted with the upper surface of the L-shaped frame, a fixed seat is fixedly installed on the upper surface of the moving block, a second hydraulic cylinder is fixedly connected to the middle of the inner side of the fixed seat, and the upper outer side of the second hydraulic cylinder is connected to the chip cleaning mechanism.

[0011] The chip cleaning mechanism includes a stand fixedly mounted on the telescopic end of the second hydraulic cylinder, a rotating recovery mechanism is provided on the upper surfaces of both ends of the stand, a circular hole is opened on the upper surface of the extension seat, and a positioning pin is connected to the middle thread inside one side of the stand.

[0012] Preferably, the rotating recovery mechanism includes a shell fixedly mounted on the upper surface of one end of the stand, a second motor is fixedly mounted on the inner side of the shell, a ring disk is rotatably fitted on the outer side of an output shaft of the second motor, a support seat is fixedly mounted on the end of the second motor, a connecting seat is fixedly mounted in the middle of the inner side of the support seat, a mounting seat is fixedly connected to the upper surface of the connecting seat, a plurality of groups of steel brushes are fixedly mounted on the upper inner side of the mounting seat, a vacuum cleaner is connected and installed at the lower inner side of one side of the ring disk, a ring tube is connected to the inner side of the ring disk through a plurality of air pipes connected and installed, the ring tube is located above the ring disk, a fixing frame is fixedly connected to the side of the ring disk away from the vacuum cleaner, the fixing frame is fixedly connected to the shell, a ring plate is clamped on the upper inner side of the ring tube, and a plurality of groups of air holes are provided on the upper surface of the ring plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The push-pull mechanism can drive the I-shaped frame to move back and forth, so that the extension seat set at the front end can be close to the top of the platform, and the extension seat can adjust the supporting area through the push of the first hydraulic cylinder, and can be rotated to the outside of one side of the platform at a later time under the connection of the rotating shaft and the positioning pin, so that the scraper can not only clean the upper surface of the platform but also the lower surface of the movable beam, and when the metal sheet is placed above the extension seat and the I-shaped frame, the propulsion mechanism on the L-shaped frame can drive the fixed seat to move toward the slide groove, and then automatically push the metal sheet so that it automatically falls to the upper surface of the platform, which makes it more labor-saving when processing heavy metal sheets.

[0015] The second hydraulic cylinder above the fixed seat can drive the platform to rise, and then the second motor above the two ends of the platform can drive the mounting seat and the steel brush to approach the lower surface of the movable beam, and quickly rotate and clean in front of or behind the scraper, so that the stubborn metal chips during stamping can be removed more conveniently, thereby facilitating the scraper to clean. In addition, with the connection of the vacuum cleaner, air pipe, ring disc, and ring pipe, too much metal chips will not be left on the upper surface of the platform. As a result, each operation of the four-column hydraulic press is more efficient and convenient, bringing more convenience to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0018] Figure 3 It is a schematic diagram of the connection between the push rod and the push-pull mechanism of the present invention;

[0019] Figure 4 It is a schematic cross-sectional view of the internal structure of the ring disk of the present invention;

[0020] Figure 5 It is a schematic diagram of the operation structure of the extension seat of the present invention being flipped to one side of the stand;

[0021] Figure 6 A schematic diagram of the operating structure of the present invention in which the extension base is flipped to one side of the stand from another angle;

[0022] Figure 7 For the present invention Figure 3 Enlarge the connection diagram at A in the middle.

[0023] In the figure: 1, platform; 2, control box; 3, ring plate; 4, stand; 5, push rod; 6, guide rod; 7, L-shaped frame; 8, first motor; 9, vacuum cleaner; 10, steel brush; 11, positioning pin; 12, screw rod; 13, fixed seat; 14, first hydraulic cylinder; 15, round hole; 16, extension seat; 17, oil pipe; 18, rotating shaft; 19, I-shaped frame; 20, mounting seat; 21, ring plate; 22, connecting rod 1. Connecting seat; 23. Supporting seat; 24. Shell; 25. Fixing frame; 26. Air pipe; 27. Scraper; 28. Second hydraulic cylinder; 29. ​​Moving block; 30. Clamping seat; 31. Fixing screw; 32. Eaves plate; 33. Air hole; 34. Ring pipe; 35. Second motor; 36. Top beam; 37. Sliding beam; 38. Main hydraulic device; 39. Support column; 40. Quick flushing oil tank; 41. Third hydraulic cylinder. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] like Figure 1-Figure 7 A four-column hydraulic press shown in the figure comprises a platform 1, a control box 2, a top beam 36, a sliding beam 37, a main hydraulic device 38, four support columns 39, and a quick-flushing oil tank 40. The four support columns 39 are respectively located on the upper surface of the platform 1 and close to each corner position. The top of the sliding beam 37 slides together on the outside of the four support columns 39 through the main hydraulic device 38. The top beam 36 is installed at the upper end of the four support columns 39. The quick-flushing oil tank 40 is located on the upper surface of the top beam 36. The main hydraulic device 38 is fixedly installed in the middle of the inner side of the top beam 36. One end of the quick-flushing oil tank 40 is connected to the control box 2 through the oil pipe 17 installed in communication. The main hydraulic device 38 is electrically connected to the control box 2.

[0027] As the instruction manual Figure 1 and Figure 2 It can be observed that the platform 1, the control box 2, the top beam 36, the sliding beam 37, the main hydraulic device 38, the four support columns 39, the quick flushing oil tank 40 and other components are the existing operating parts of the hydraulic press. In addition, there are also existing structures such as hydraulic valves, oil supply valves, infrared sensors, etc. The above are all existing technologies and will not be elaborated in detail.

[0028] Guide rods 6 are respectively connected to the two ends of the outer wall of one side of the platform 1, and the two guide rods 6 are connected to the push rod 5 through a push-pull mechanism. The upper surface of one end of the push rod 5 is fixedly connected to an I-shaped frame 19, a slide groove is provided in the middle of the inner side of the I-shaped frame 19, a supporting mechanism is provided on the outer side of the I-shaped frame 19, a propulsion mechanism is provided on the outer side of one end of the push rod 5, and a chip cleaning mechanism is provided on the upper outer side of the propulsion mechanism.

[0029] The push-pull mechanism includes a third hydraulic cylinder 41 fixedly mounted in the middle of the outer side of one end of the platform 1 , the telescopic end of the third hydraulic cylinder 41 is connected to the outer side of the push rod 5 , and the two ends of the push rod 5 slide on the outer side of the guide rod 6 respectively.

[0030] As the instruction manual Figure 2 It can be observed that under the drive of the third hydraulic cylinder 41 , the push rod 5 slides as a whole on the outside of the two guide rods 6 , thereby allowing the I-frame 19 to move horizontally.

[0031] The supporting mechanism includes rotating shafts 18 rotatably mounted on the inner sides of both ends of the I-shaped frame 19, and first hydraulic cylinders 14 are rotatably mounted on the outer sides of the two rotating shafts 18;

[0032] As the instruction manual Figure 3 and Figure 5 It can be observed that under the rotation cooperation of the rotating shaft 18, the two groups of first hydraulic cylinders 14 can be rotated upward on both sides of the I-shaped frame 19 for use.

[0033] The telescopic ends of the two first hydraulic cylinders 14 are commonly connected to an extension seat 16, and a friction assembly is arranged at the lower outer side of one end of the extension seat 16. The outer sides of both ends of the I-shaped frame 19 are extended with eaves plates 32, and the lower surface of the first hydraulic cylinder 14 is in active contact with the upper surfaces of the two eaves plates 32;

[0034] As the instruction manual Figure 3 , Figure 5 , Figure 6 , Figure 7 It can be observed that the purpose of setting the extension seat 16 is to increase the contact area of ​​the I-frame 19, and the two side eaves panels 32 can support the first hydraulic cylinder 14 from below when the first hydraulic cylinder 14 is placed horizontally.

[0035] The abutting assembly includes a holder 30 fixedly mounted on the lower outer side of one end of the extension seat 16 , and a scraper 27 is commonly connected to the inner sides of both ends of the holder 30 through threaded fixing screws 31 , and the scraper 27 slides against the upper surface of the platform 1 .

[0036] As the instruction manual Figure 7 It can be observed that, under the connection of the fixing screw 31 , the holder 30 and the scraper 27 can be installed below one end of the extension seat 16 , and when the extension seat 16 moves horizontally, the scraper 27 will contact the upper surface of the platform 1 .

[0037] The propulsion mechanism includes a screw rod 12 rotatably mounted on the inner side of one end of the push rod 5, an L-shaped frame 7 is fixedly connected to the outer side of one end of the push rod 5 and close to the lower position of the screw rod 12, one end of the screw rod 12 passes through the outer side of the L-shaped frame 7 and the end is connected to the first motor 8, the first motor 8 is fixedly mounted on the outer side of the L-shaped frame 7, a moving block 29 is threadedly connected to the outer side of the screw rod 12, the lower surface of the moving block 29 is slidably fitted with the upper surface of the L-shaped frame 7, a fixed seat 13 is fixedly mounted on the upper surface of the moving block 29, a second hydraulic cylinder 28 is fixedly connected to the middle of the inner side of the fixed seat 13, and the upper outer side of the second hydraulic cylinder 28 is connected to the chip cleaning mechanism.

[0038] As the instruction manual Figure 3 and Figure 5 It can be observed that when the first motor 8 is connected to the power supply, it can drive the screw rod 12 to rotate, and the moving block 29 threadedly connected to the screw rod 12 can reciprocate on the outside of the screw rod 12, so that the fixed seat 13 can be close to the I-shaped frame 19.

[0039] The chip cleaning mechanism includes a stand 4 fixedly mounted on the telescopic end of the second hydraulic cylinder 28, a rotating recovery mechanism is provided on the upper surface of both ends of the stand 4, a circular hole 15 is provided on the upper surface of the extension seat 16, and a positioning pin 11 is connected to the middle of the inner thread of one side of the stand 4;

[0040] As the instruction manual Figure 5 and Figure 6 It can be observed that the second hydraulic cylinder 28 can drive the stand 4 to move up and down, so that the rotating recovery mechanism is close to the sliding beam 37. A circular hole 15 is opened on the inner side of the extension seat 16, so that when the extension seat 16 is flipped close to the stand 4, it can be fixed to one side edge of the stand 4 through the positioning pin 11 for use.

[0041] The rotating recovery mechanism includes a casing 24 fixedly mounted on the upper surface of one end of the stand 4, a second motor 35 is fixedly mounted inside the casing 24, a ring disk 3 is rotatably matched with the outer side of the output shaft of the second motor 35, a support seat 23 is fixedly mounted on the end of the second motor 35, a connecting seat 22 is fixedly mounted in the middle of the inner side of the supporting seat 23, a mounting seat 20 is fixedly connected to the upper surface of the connecting seat 22, and a plurality of sets of steel brushes 10 are fixedly mounted on the inner upper side of the mounting seat 20;

[0042] As the instruction manual Figure 4 It can be observed that after the second motor 35 is connected to the power supply, it can drive the upper support seat 23, the connecting seat 22, the mounting seat 20, and the multiple sets of steel brushes 10 to rotate on the inner side of the ring plate 3. The multiple sets of steel brushes 10 can remove the metal chips that are more stubbornly pressed on the surface of the slide beam 37 by rotating the column, thereby ensuring that the scraper 27 that is subsequently turned up can easily scrape off some metal chips;

[0043] A vacuum cleaner 9 is installed at the lower part of one side of the ring disk 3, and a ring tube 34 is connected to the inner side of the ring disk 3 through multiple air pipes 26 installed in communication. The ring tube 34 is located above the ring disk 3, and a fixing frame 25 is fixedly connected to the side of the ring disk 3 away from the vacuum cleaner 9. The fixing frame 25 is fixedly connected to the sleeve shell 24, and a ring plate 21 is clamped on the upper inner side of the ring tube 34, and multiple groups of air holes 33 are provided on the upper surface of the ring plate 21.

[0044] Under the strong suction of the vacuum cleaner 9 , the annular tube 34 can absorb the scraped metal chips through the air pipes 26 to recover the metal chips, and the annular plate 21 can prevent the metal chips from flowing into the inner side of the annular tube 34 .

[0045] Working principle: In actual operation, the distance between the I-shaped frame 19 and the extension seat 16 can be adjusted by adjusting the first hydraulic cylinders 14 on both sides of the I-shaped frame 19 corresponding to the metal sheet to be processed, and then the worker places the metal sheet on the upper surface of the extension seat 16 and the I-shaped frame 19. Driven by the push-pull mechanism, the I-shaped frame 19 as a whole assembly automatically transports the metal sheet to the top of the platform 1, and then the propulsion mechanism on the L-shaped frame 7 can drive the fixed seat 13 to move to the slide groove inside the I-shaped frame 19, and then automatically push the metal sheet to make it automatically fall to the upper surface of the platform 1. In this way, it is more labor-saving when processing heavy metal sheets, and then the driving device is restored to the outside of one end of the platform 1, waiting for the stamping operation to be completed, and the metal sheet is pushed. After the operation is completed, the shaft 18 is rotated. The rotation cooperation with the positioning pin 11 can drive the extension seat 16 to approach the outer wall of one side of the platform 4, so that the scraper 27 can not only clean the upper surface of the platform 1 but also clean the lower surface of the sliding beam 37. The second hydraulic cylinder 28 above the fixed seat 13 can drive the platform 4 to rise, so that the second motor 35 above the two ends of the platform 4 can drive the mounting seat 20 and the steel brush 10 to approach the lower surface of the sliding beam 37. When the scraper 27 is operated before or after, it can quickly rotate and clean the more stubbornly attached metal chips, thereby facilitating the unified scraping of the scraper 27. In addition, under the connection of the vacuum cleaner 9, the air pipe 26, the ring disk 3, and the ring pipe 34, too much metal chips will not be left on the upper surface of the platform 1. As a result, each operation of the four-column hydraulic press is more efficient and convenient, which brings more convenience to people.

[0046] As described above, in order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, it can be understood that the specific meanings of the above terms in the present invention are only the preferred embodiments of the present invention, and are not other forms of limitations on the present invention. Any technician familiar with this profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A four-column hydraulic press, comprising a platform (1), a control box (2), a top beam (36), a sliding beam (37), a main hydraulic device (38), four support columns (39), and a quick flushing oil tank (40), characterized in that: The four support columns (39) are respectively located on the upper surface of the platform (1) and near each corner position. The top of the sliding beam (37) slides together on the outside of the four support columns (39) through a main hydraulic device (38). The top beam (36) is installed on the upper ends of the four support columns (39). The quick flushing oil tank (40) is located on the upper surface of the top beam (36). The main hydraulic device (38) is fixedly installed in the middle of the inner side of the top beam (36). One end of the quick flushing oil tank (40) is connected to the control box (17) through a connected oil pipe (17). 2), the main hydraulic device (38) is electrically connected to the control box (2), the two ends of the outer wall of one side of the platform (1) are respectively connected to guide rods (6), the two guide rods (6) are connected to push rods (5) through a push-pull mechanism, the upper surface of one end of the push rod (5) is fixedly connected to an I-shaped frame (19), a slide groove is provided in the middle of the inner side of the I-shaped frame (19), a supporting mechanism is provided on the outer side of the I-shaped frame (19), a propulsion mechanism is provided on the outer side of one end of the push rod (5), and a chip cleaning mechanism is provided on the upper side of the outer side of the propulsion mechanism; The support mechanism comprises rotating shafts (18) rotatably mounted on the inner sides of both ends of the I-shaped frame (19), first hydraulic cylinders (14) are rotatably mounted on the outer sides of the two rotating shafts (18), the telescopic ends of the two first hydraulic cylinders (14) are commonly connected to an extension seat (16), a friction assembly is arranged below the outer side of one end of the extension seat (16), eaves plates (32) are extended from the outer sides of both ends of the I-shaped frame (19), and the lower surface of the first hydraulic cylinder (14) is in active contact with the upper surfaces of the two eaves plates (32); The abutting assembly comprises a holder (30) fixedly mounted below the outer side of one end of the extension seat (16), the inner sides of both ends of the holder (30) being connected to a scraper (27) via threaded fixing screws (31), and the scraper (27) being slidably abutted against the upper surface of the platform (1); The propulsion mechanism comprises a screw rod (12) rotatably mounted on the inner side of one end of the push rod (5); an L-shaped frame (7) is fixedly connected to the outer side of one end of the push rod (5) and close to the lower position of the screw rod (12); one end of the screw rod (12) passes through the outer side of the L-shaped frame (7) and the end is connected to a first motor (8); the first motor (8) is fixedly mounted on the outer side of the L-shaped frame (7); The outer side of the screw rod (12) is threadedly connected to a moving block (29); the lower surface of the moving block (29) is slidably fitted with the upper surface of the L-shaped frame (7); a fixed seat (13) is fixedly mounted on the upper surface of the moving block (29); a second hydraulic cylinder (28) is fixedly connected to the middle of the inner side of the fixed seat (13); and the upper outer side of the second hydraulic cylinder (28) is connected to a chip cleaning mechanism.

2. A four-column hydraulic press according to claim 1, characterized in that: The push-pull mechanism comprises a third hydraulic cylinder (41) fixedly mounted in the middle of the outer side of one end of the platform (1), the telescopic end of the third hydraulic cylinder (41) being connected to the outer side of the push rod (5), and the two ends of the push rod (5) respectively slide on the outer side of the guide rod (6).

3. A four-column hydraulic press according to claim 1, characterized in that: The chip cleaning mechanism comprises a stand (4) fixedly mounted on the telescopic end of the second hydraulic cylinder (28), a rotating recovery mechanism being arranged on the upper surfaces of both ends of the stand (4), a circular hole (15) being arranged on the upper surface of the extension seat (16), and a positioning pin (11) being connected to the middle of an inner thread of one side of the stand (4).

4. A four-column hydraulic press according to claim 3, characterized in that: The rotating recovery mechanism comprises a casing (24) fixedly mounted on the upper surface of one end of the stand (4); a second motor (35) is fixedly mounted on the inner side of the casing (24); a ring disk (3) is rotatably engaged with the outer side of the output shaft of the second motor (35); a support seat (23) is fixedly mounted on the end of the second motor (35); a connecting seat (22) is fixedly mounted in the middle of the inner side of the supporting seat (23); a mounting seat (20) is fixedly connected to the upper surface of the connecting seat (22); and a plurality of sets of steel brushes are fixedly mounted on the inner upper side of the mounting seat (20). (10), a vacuum cleaner (9) is installed in a communication connection at the lower part of one side of the ring disk (3), a ring tube (34) is connected to the inner side of the ring disk (3) through a plurality of air pipes (26) installed in a communication connection, the ring tube (34) is located above the ring disk (3), a fixing frame (25) is fixedly connected to the side of the ring disk (3) away from the vacuum cleaner (9), the fixing frame (25) is fixedly connected to the casing (24), a ring plate (21) is clamped on the upper side of the inner side of the ring tube (34), and a plurality of air holes (33) are provided on the upper surface of the ring plate (21).

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