Oil press

Abstract

The utility model provides an oil press which comprises a base, vertically-arranged stand columns are fixed to the four corners of the top of the base respectively, a top table is fixed to the top ends of the stand columns, an oil cylinder which penetrates through the top table and extends out of the top table is fixed to the center of the top table, and a lifting plate connected with the stand columns in a sleeved mode is fixed to the telescopic end of the oil cylinder. A protective cover is arranged outside the base, a first rack is fixed to the outer wall of the lifting plate, a gear located in the protective cover is fixed to the outer wall of the base, the bottom end of the first rack extends into the protective cover and is meshed with the gear, and a second rack meshed with the gear is fixed to the inner wall of the protective cover. According to the utility model, the movement of the protective cover can be ingeniously controlled by utilizing the transmission effect of the oil cylinder and the movement of the lifting plate under the condition of not adding an additional driving device, and an operator does not need to repeatedly and manually open and close the protective mechanism, so that the labor intensity of the operator is effectively reduced, the time for manually opening and closing the protective mechanism is saved, and the working efficiency is improved. Therefore, the machining efficiency of the workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, in particular to a hydraulic press. Background Art

[0002] A hydraulic press is a machine that uses liquid static pressure to process metal, plastic, rubber, wood, powder and other products. It is often used in pressing and pressing processes. A hydraulic press is needed in the pressing process of metal products.

[0003] For example, the utility model patent with Chinese patent number: CN217891955U provides a small hydraulic press, including a machine base, a control box, a machine platform and a pressure plate mechanism, the control box is installed on the side of the machine base, the machine platform is installed on the upper end of the machine base, and the pressure plate mechanism is installed on the upper end of the machine platform; the left and right rear ends of the machine base are all fixed with a bottom plate, and the upper end of the bottom plate is installed with a protective mechanism; a slide is slidably connected to the middle of the upper end of the machine platform, a threaded sleeve is embedded and fixed in the middle of the slide, and a screw assembly driven by the threaded sleeve is installed at the rear of the machine platform.

[0004] Although the above device solves the problem of workpieces flying out of the working area in an undirected manner during processing, posing a threat to the personal safety of workers, during use, the operator needs to repeatedly open and close the protective mechanism manually, which increases the labor intensity of the operator and is not conducive to improving the processing efficiency of the workpiece. Utility Model Content

[0005] The utility model discloses an oil press, which solves the problem that an operator needs to manually open and close a protection mechanism repeatedly during use, which increases the operator's labor intensity and is not conducive to improving the processing efficiency of workpieces.

[0006] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions:

[0007] A hydraulic press comprises a base, wherein four vertically arranged columns are fixed at the top corners of the base, a top platform is fixed at the top of the column, an oil cylinder penetrating the top platform and extending outside the top platform is fixed at the center of the top platform, a lifting plate sleeved with the column is fixed at the telescopic end of the oil cylinder, an upper pressing mold plate is fixed on the bottom surface of the lifting plate, a lower pressing mold seat is fixed on the top surface of the base, a protective cover is provided on the outside of the base, the protective cover is a vertical cylindrical structure and can completely surround the base, a first rack is fixed on the outer wall of the lifting plate, a gear located in the protective cover is fixed on the outer wall of the base, the bottom end of the first rack extends into the protective cover and meshes with the gear, a second rack meshing with the gear is fixed on the inner wall of the protective cover, and the first rack and the second rack are both vertically arranged and located on opposite sides of the gear.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The workpiece to be processed is placed on the lower die seat, and the oil cylinder is started. The telescopic end of the oil cylinder drives the lifting plate to move down along the column, and the lifting plate drives the upper die plate to move down. Since the outer wall of the lifting plate is fixed with a first rack, the first rack can be driven to move down at the same time. The first rack drives the gear to rotate and thus drives the second rack to move up, which can drive the protective cover to move up. In this way, when the upper die plate is attached to the lower die seat and the workpiece is processed, the protective cover can surround the upper die plate and the lower die seat, effectively preventing the workpiece from flying out of the working area in an undirected manner during the processing. When the processing is completed, the telescopic end of the oil cylinder drives the lifting plate to rise, and relatively drives the first rack to move up, so that the protective cover can be driven back to the initial state. The utility model can utilize the transmission effect of the oil cylinder itself, and without adding an additional driving device, the movement of the lifting plate is used to cleverly control the movement of the protective cover, without the need for the operator to repeatedly manually open and close the protective mechanism, which effectively reduces the labor intensity of the operator and saves the time of manually opening and closing the protective mechanism, thereby improving the processing efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the utility model;

[0011] Figure 2 It is a schematic diagram of the back side of the protective cover of the utility model;

[0012] Figure 3 It is a top view of the utility model;

[0013] Figure 4 This is a schematic diagram of the structure of the base of the utility model in front view and section;

[0014] Figure 5 This is a schematic diagram of the structure of the upper pressure template of the utility model in front view and section;

[0015] In the figure: 1. base; 11. gear; 12. connecting rod; 13. limit block; 14. cavity; 2. column; 3. top platform; 4. cylinder; 5. lifting plate; 51. first rack; 52. bump; 6. upper die plate; 61. top block; 62. spring; 7. lower die base; 71. push rod; 8. protective cover; 81. second rack; 82. sleeve rod; 83. slot; 84. observation window. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 and Figure 3As shown, the utility model provides a hydraulic press, including a base 1, wherein vertically arranged columns 2 are respectively fixed at the four corners of the top of the base 1, a top platform 3 is fixed at the top of the column 2, an oil cylinder 4 penetrating the top platform 3 and extending to the outside of the top platform 3 is fixed at the center of the top platform 3, a lifting plate 5 sleeved with the column 2 is fixed at the telescopic end of the oil cylinder 4, an upper pressing plate 6 is fixed on the bottom surface of the lifting plate 5, a lower pressing die seat 7 is fixed on the top surface of the base 1, a protective cover 8 is provided on the outside of the base 1, the protective cover 8 is a vertical cylindrical structure and can completely surround the base 1, a first rack 51 is fixed to the outer wall of the lifting plate 5, a gear 11 located in the protective cover 8 is fixed on the outer wall of the base 1, the bottom end of the first rack 51 extends into the protective cover 8 and meshes with the gear 11, a second rack 81 meshing with the gear 11 is fixed on the inner wall of the protective cover 8, the first rack 51 and the second rack 81 are both vertically arranged and located on opposite sides of the gear 11.

[0018] like Figure 2 As shown, a sleeve rod 82 that can be sleeved with the first rack 51 is fixed on the inner wall of the protective cover 8, a protrusion 52 is fixed on the surface of the first rack 51, and a slot 83 corresponding to the protrusion 52 is provided on the sleeve rod 82. When the lifting plate 5 drives the first rack 51 to move downward, the bottom end of the first rack 51 can be sleeved with the top end of the sleeve rod 82. Since the protrusion 52 is fixed on the first rack 51 and the slot 83 corresponding to the protrusion 52 is provided on the sleeve rod 82, the movement trajectory of the first rack 51 can be effectively limited, so that the first rack 51 can only move in the vertical direction, thereby preventing the first rack 51 and the second rack 81 from being disengaged during the workpiece processing.

[0019] like Figure 4 As shown, two symmetrically distributed push rods 71 ​​are penetrated in the lower die seat 7, the push rods 71 ​​are vertically arranged and the bottom ends of the push rods 71 ​​penetrate and extend into the base 1, the bottom ends of the push rods 71 ​​are rotatably connected to a horizontally arranged connecting rod 12, the opposite ends of the two connecting rods 12 penetrate and extend to the outside of the base 1 and can contact with the bottom of the protective cover 8, and a cavity 14 is provided in the base 1 for the connecting rod 12 to move in the horizontal and vertical directions, and a limit block 13 in contact with the bottom surface of the connecting rod 12 is fixed in the cavity 14. When the workpiece fits on the lower die seat 7 and is difficult to remove, the bottom end of the push rod 71 will sink and support the connecting rod 12, so that the connecting rod 12 is in an inclined state. When the workpiece is processed, the telescopic end of the cylinder 4 will drive the lifting plate 5 to rise, and the lifting plate 5 will drive the first rack 51 to move upward. The first rack 51 drives the gear 11 to rotate, thereby driving the second rack 81 to move downward, which can drive the protective cover 8 to move down and fall back. In this way, the bottom of the protective cover 8 will press down the end of the connecting rod 12 outside the base 1, so that the lever principle can be used to move the push rod 71 upward, thereby ejecting the workpiece fitted on the lower die seat 7, so that the workpiece can be easily taken out.

[0020] like Figure 5 As shown, a top block 61 is slidably connected at the center of the upper pressing plate 6, and a spring 62 fixed to the top surface of the top block 61 is provided inside the upper pressing plate 6, and in a natural state, the bottom end of the top block 61 can penetrate and extend to the outside of the upper pressing plate 6. The provision of the spring 62, on the one hand, can facilitate the top block 61 to be compressed into the interior of the upper pressing plate 6 during workpiece processing, and on the other hand, can effectively prevent the workpiece from being attached to the bottom of the upper pressing plate 6 after processing and being difficult to remove.

[0021] like Figure 4 As shown, the limit block 13 is a triangular structure and the vertex of the limit block 13 contacts the bottom surface of the connecting rod 12. The limit block 13 is a triangular structure, which can provide a strong fulcrum for the connecting rod 12, facilitating the lever movement of the connecting rod 12.

[0022] like Figure 2 As shown, the pitch of the first rack 51 is equal to the pitch of the second rack 81, and both are slightly smaller than the height of the protective cover 8. The setting of the pitch of the first rack 51 being equal to the pitch of the second rack 81 can prevent the protective cover 8 from excessive movement, so that the protective cover 8 can completely surround the upper die plate 6 and the lower die seat 7 when the upper die plate 6 and the lower die seat 7 are in contact.

[0023] like Figure 1 As shown, the protective cover 8 is provided with an observation window 84. The observation window 84 facilitates the operator to observe the internal processing conditions in real time when processing the workpiece.

[0024] When in use, place the workpiece to be processed on the lower die seat 7, start the oil cylinder 4, the telescopic end of the oil cylinder 4 drives the lifting plate 5 to move down along the column 2, and the lifting plate 5 drives the upper die plate 6 to move down. Since the outer wall of the lifting plate 5 is fixed with a first rack 51, the first rack 51 can be driven to move down at the same time and be sleeved with the sleeve rod 82 during the downward movement, thereby limiting the first rack 51 to move only in the vertical direction, and the first rack 51 drives the gear 11 to rotate, thereby driving the second rack 81 to move up, which can drive the protective cover 8 to move up. In this way, when the upper die plate 6 is in contact with the lower die seat 7 and the workpiece is pressed, During working hours, the protective cover 8 can completely surround the upper die plate 6 and the lower die seat 7, effectively preventing the workpiece from flying out of the working area in an undirected manner during the processing; and when the workpiece is processed, the telescopic end of the cylinder 4 drives the lifting plate 5 to rise, and relatively drives the first rack 51 to move upward, so that the protective cover 8 can be driven to fall back to the initial state. If the workpiece is attached to the lower die seat 7, the bottom of the protective cover 8 will press down the end of the connecting rod 12 outside the base 1, so that the lever principle can be used to move the push rod 71 upward, thereby ejecting the workpiece attached to the lower die seat 7, so that the workpiece can be easily removed.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A hydraulic press, comprising a base (1), characterized in that: The four corners of the top of the base (1) are respectively fixed with vertically arranged columns (2), the top of the columns (2) is fixed with a top platform (3), the center of the top platform (3) is fixed with an oil cylinder (4) that penetrates the top platform (3) and extends to the outside of the top platform (3), the telescopic end of the oil cylinder (4) is fixed with a lifting plate (5) sleeved with the columns (2), the bottom surface of the lifting plate (5) is fixed with an upper pressing mold plate (6), the top surface of the base (1) is fixed with a lower pressing mold seat (7), and the outside of the base (1) is provided with a protective cover (8), and the protective cover (8) The invention is a vertical cylindrical structure capable of completely surrounding the base (1); a first rack (51) is fixed on the outer wall of the lifting plate (5); a gear (11) located in the protective cover (8) is fixed on the outer wall of the base (1); the bottom end of the first rack (51) extends into the protective cover (8) and meshes with the gear (11); a second rack (81) meshing with the gear (11) is fixed on the inner wall of the protective cover (8); the first rack (51) and the second rack (81) are both vertically arranged and located on opposite sides of the gear (11).

2. The hydraulic press according to claim 1, characterized in that: A sleeve rod (82) which can be sleeved with the first rack (51) is fixed on the inner wall of the protective cover (8), a convex block (52) is fixed on the surface of the first rack (51), and a slot (83) corresponding to the convex block (52) is formed on the sleeve rod (82).

3. The hydraulic press according to claim 1, characterized in that: The lower die seat (7) is penetrated by two symmetrically distributed push rods (71), the push rods (71) are vertically arranged and the bottom ends of the push rods (71) penetrate and extend into the base (1), the bottom ends of the push rods (71) are rotatably connected to a horizontally arranged connecting rod (12), the two ends of the connecting rods (12) that are separated from each other penetrate and extend outside the base (1) and can contact the bottom of the protective cover (8), the base (1) is provided with a cavity (14) for the connecting rod (12) to move in the horizontal and vertical directions, and a limit block (13) in contact with the bottom surface of the connecting rod (12) is fixed in the cavity (14).

4. The hydraulic press according to claim 1, characterized in that: A top block (61) is slidably connected at the center of the upper pressing plate (6), a spring (62) fixed to the top surface of the top block (61) is arranged inside the upper pressing plate (6), and in a natural state, the bottom end of the top block (61) can penetrate and extend outside the upper pressing plate (6).

5. The hydraulic press according to claim 3, characterized in that: The limiting block (13) is a triangular structure, and the vertex of the limiting block (13) is in contact with the bottom surface of the connecting rod (12).

6. The hydraulic press according to claim 1, characterized in that: The tooth pitch of the first rack (51) is equal to the tooth pitch of the second rack (81), and both are smaller than the height of the protective cover (8).

7. The hydraulic press according to claim 1, characterized in that: The protective cover (8) is provided with an observation window (84).

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