Lifting type four-column oil press

Abstract

The utility model belongs to the technical field of oil presses, and particularly relates to a lifting type four-column oil press which comprises a machine base and a machine body arranged at the top of the machine base, and further comprises an oil pressure assembly arranged on the machine body and a centering limiting assembly arranged on the machine body. A lead screw and a pair of sliding rods used for guiding are arranged between the left end and the right end of the U-shaped support through bearings, the gear motor is driven to drive the lead screw to rotate, the lead screw rotates to drive the left displacement base and the right displacement base to move in the opposite directions, and then the left T-shaped chuck and the right T-shaped chuck are driven to be close to or away from each other. And the workpiece on the objective table is always kept at the central position, the positioning accuracy is high, and the stamping effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil presses, and in particular relates to a lifting four-column oil press. Background Art

[0002] A hydraulic press (a type of hydraulic press) is a machine that uses special hydraulic oil as a working medium and a hydraulic pump as a power source. The hydraulic oil enters the cylinder through the hydraulic pipeline by the force of the pump. Then there are several sets of seals that cooperate with each other in the cylinder. The seals in different positions are different, but they all play a sealing role to prevent the hydraulic oil from leaking. Finally, the hydraulic oil circulates in the oil tank through a one-way valve to circulate the oil cylinder to do work and complete a certain mechanical action as a kind of productivity. The hydraulic press consists of two major parts: the main machine and the control mechanism. The main machine part of the hydraulic press includes the fuselage, the main cylinder, the ejection cylinder and the filling device, etc. The power mechanism consists of a tank, a high-pressure pump, a low-pressure control system, an electric motor and various pressure valves and directional valves, etc. Under the control of the electrical device, the power mechanism realizes energy conversion, regulation and transmission through the pump, the cylinder and various hydraulic valves to complete the cycle of various process actions;

[0003] When the existing hydraulic press is in operation, it is necessary to manually place the object at the center of the loading platform to facilitate the hydraulic operation. Due to the manual operation, the placement accuracy is poor and the hydraulic effect is poor. Utility Model Content

[0004] To solve the problems raised in the above background technology, the utility model provides a lifting four-column hydraulic press, comprising a machine base, a machine body arranged on the top of the machine base, a hydraulic assembly arranged on the machine body, and a centering limit assembly arranged on the machine body;

[0005] The centering limit assembly comprises a U-shaped support fixed on the machine body, a screw rod and a pair of guide rods for guiding are arranged between the left and right ends of the U-shaped support through bearings.

[0006] As a preferred embodiment of the utility model, a lifting four-column hydraulic press is provided with a reduction motor mounted on the U-shaped support, the rotor of the reduction motor is fixedly connected to a screw rod, and the threads at the left and right ends of the screw rod are in opposite directions.

[0007] As a preferred lifting four-column hydraulic press of the utility model, a left threaded sleeve and a right threaded sleeve are screwed on the threads in different directions at the left and right ends of the screw rod, and a left sliding cylinder and a right sliding cylinder that slide left and right are respectively sleeved on the left and right ends of the guide rod.

[0008] As a preferred embodiment of the lifting four-column hydraulic press of the utility model, a left displacement seat is fixed on the left threaded sleeve and the left slide cylinder, and a right displacement seat is fixed on the right threaded sleeve and the right slide cylinder.

[0009] As a preferred embodiment of the lifting four-column hydraulic press of the utility model, a left T-type chuck and a right T-type chuck are respectively arranged on the left displacement seat and the right displacement seat.

[0010] As a preferred embodiment of the lifting four-column hydraulic press of the utility model, a loading platform for supporting the workpiece is fixed on the top of the U-shaped support through a pair of support plates.

[0011] As a preferred lifting four-column hydraulic press of the utility model, the hydraulic assembly includes a cylinder seat fixed on the machine body, a hydraulic cylinder is installed on the cylinder seat, and sliding holes are opened at the four corners of the cylinder seat, and sliding rods sliding up and down are arranged inside the sliding holes, and a pressure plate is fixed between the bottom ends of the four sliding rods, and the center of the top of the pressure plate is connected to the piston rod of the hydraulic cylinder.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Place the workpiece to be stamped on the loading platform, drive the reduction motor to drive the lead screw to rotate. Since the threads on the left and right ends of the lead screw are in opposite directions, the left threaded sleeve and the right threaded sleeve are respectively screwed on the threads in different directions on the left and right ends of the lead screw, and the left threaded sleeve and the left slide are limited by the left displacement seat, and the right threaded sleeve and the right slide are limited by the right displacement seat. At this time, the rotation of the lead screw drives the left displacement seat and the right displacement seat to move in opposite directions, and then drives the left T-type chuck and the right T-type chuck to move closer to or away from each other, so that the workpiece on the loading platform is always kept in the center position, with high positioning accuracy and good stamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the centering and limiting assembly in the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the centering and limiting assembly in the utility model;

[0019] In the figure:

[0020] 1. Machine base;

[0021] 2. Body;

[0022] 3. Hydraulic assembly; 31. Cylinder seat; 32. Hydraulic cylinder; 33. Sliding hole; 34. Sliding rod; 35. Pressing plate;

[0023] 4. Centering limit assembly; 41. U-shaped support; 411. Loading table; 42. Screw; 43. Guide rod; 44. Left threaded sleeve; 45. Right threaded sleeve; 46. Left slide; 47. Right slide; 48. Left displacement seat; 481. Left T-type chuck; 49. Right displacement seat; 491. Right T-type chuck; DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1 As shown;

[0027] A lifting four-column hydraulic press comprises a machine base 1 and a machine body 2 arranged on the top of the machine base 1.

[0028] In this embodiment: In order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "the existing hydraulic press needs to manually place the objects at the center of the loading platform during operation to facilitate the hydraulic operation. Due to the manual operation, the placement accuracy is poor and the hydraulic effect is poor." Combined with actual use, this problem is obviously a real problem that is difficult to solve. Therefore, in order to solve this technical problem, a centering limit assembly 4 is added on this basis.

[0029] like Figure 1-4 As shown in the figure;

[0030] In combination with the above content, in order to facilitate the positioning of the workpiece, it also includes a hydraulic component 3 arranged on the body 2 and a centering and limiting component 4 arranged on the body 2;

[0031] The centering limit assembly 4 includes a U-shaped support 41 fixed on the body 2, and a screw rod 42 and a pair of guide rods 43 for guiding are arranged between the left and right ends of the U-shaped support 41 through bearings.

[0032] In an optional embodiment, a reduction motor is installed on the U-shaped support 41, and the rotor of the reduction motor is fixedly connected to the screw rod 42. The threads on the left and right ends of the screw rod 42 are in opposite directions. A left threaded sleeve 44 and a right threaded sleeve 45 are respectively screwed on the threads in different directions on the left and right ends of the screw rod 42. A left slide cylinder 46 and a right slide cylinder 47 that slide left and right are respectively sleeved on the left and right ends of the guide rod 43. A left displacement seat 48 is fixed on the left threaded sleeve 44 and the left slide cylinder 46, and a right displacement seat 49 is fixed on the right threaded sleeve 45 and the right slide cylinder 47. A left T-shaped chuck 481 and a right T-shaped chuck 491 are respectively provided on the left displacement seat 48 and the right displacement seat 49. A loading platform 411 for supporting a workpiece is fixed on the top of the U-shaped support 41 through a pair of support plates.

[0033] In this embodiment: the driving reduction motor drives the screw 42 to rotate. Since the threads on the left and right ends of the screw 42 are in opposite directions, the left threaded sleeve 44 and the right threaded sleeve 45 are respectively screwed on the threads in different directions on the left and right ends of the screw 42, and the left threaded sleeve 44 and the left slide cylinder 46 are limited by the left displacement seat 48, and the right threaded sleeve 25 and the right slide cylinder 27 are limited by the right displacement seat 49. At this time, the rotation of the screw 22 drives the left displacement seat 48 and the right displacement seat 49 to move in opposite directions, and then drives the left T-type chuck 481 and the right T-type chuck 491 to move closer to or away from each other, so that the workpiece on the stage 411 is always kept in the center position, with high positioning accuracy and good stamping effect.

[0034] In an optional embodiment, the oil pressure assembly 3 includes a cylinder seat 31 fixed on the body 2, a hydraulic cylinder 32 is installed on the cylinder seat 31, and sliding holes 33 are opened at the four corners of the cylinder seat 31, and sliding rods 34 sliding up and down are arranged inside the sliding holes 33, and a pressure plate 35 is fixed between the bottom ends of the four sliding rods 34, and the top center of the pressure plate 35 is connected to the piston rod of the hydraulic cylinder 32.

[0035] Working principle of this utility model:

[0036] The workpiece to be stamped is placed on the worktable 411, and the reduction motor is driven to drive the screw 42 to rotate. Since the threads on the left and right ends of the screw 42 are in opposite directions, the left threaded sleeve 44 and the right threaded sleeve 45 are respectively screwed on the threads in different directions on the left and right ends of the screw 42, and the left threaded sleeve 44 and the left slide cylinder 46 are limited by the left displacement seat 48, and the right threaded sleeve 25 and the right slide cylinder 27 are limited by the right displacement seat 49. At this time, the rotation of the screw 22 drives the left displacement seat 48 and the right displacement seat 49 to move in opposite directions, and then drives the left T-type chuck 481 and the right T-type chuck 491 to move closer to or away from each other, so that the workpiece on the stage 411 is always kept in the center position, with high positioning accuracy and good stamping effect.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting four-column hydraulic press, comprising a machine base (1), and a machine body (2) arranged on the top of the machine base (1), characterized in that: It also includes an oil pressure assembly (3) arranged on the machine body (2) and a centering and limiting assembly (4) arranged on the machine body (2); The centering limit assembly (4) comprises a U-shaped support (41) fixed on the machine body (2), a screw rod (42) and a pair of guide rods (43) for guiding are arranged between the left and right ends of the U-shaped support (41) via bearings.

2. The lifting four-column hydraulic press according to claim 1, characterized in that: A reduction motor is mounted on the U-shaped support (41), the rotor of the reduction motor is fixedly connected to a screw rod (42), and the screw threads at the left and right ends of the screw rod (42) are in opposite directions.

3. The lifting four-column hydraulic press according to claim 1, characterized in that: The left thread sleeve (44) and the right thread sleeve (45) are respectively screwed on the threads in different directions at the left and right ends of the screw rod (42), and the left and right ends of the guide rod (43) are respectively sleeved with a left sliding cylinder (46) and a right sliding cylinder (47) that slide left and right.

4. A lifting four-column hydraulic press according to claim 3, characterized in that: A left displacement seat (48) is fixed on the left threaded sleeve (44) and the left slide cylinder (46), and a right displacement seat (49) is fixed on the right threaded sleeve (45) and the right slide cylinder (47).

5. The lifting four-column hydraulic press according to claim 4, characterized in that: The left displacement seat (48) and the right displacement seat (49) are respectively provided with a left T-shaped clamp (481) and a right T-shaped clamp (491).

6. The lifting four-column hydraulic press according to claim 1, characterized in that: A loading platform (411) for supporting a workpiece is fixed to the top of the U-shaped support (41) via a pair of supporting plates.

7. The lifting four-column hydraulic press according to claim 1, characterized in that: The oil pressure assembly (3) comprises a cylinder seat (31) fixed on the machine body (2), a hydraulic cylinder (32) being mounted on the cylinder seat (31), and sliding holes (33) being provided at four corners of the cylinder seat (31), a sliding rod (34) sliding up and down being provided inside the sliding hole (33), a pressure plate (35) being fixed between the bottom ends of the four sliding rods (34), and the center of the top of the pressure plate (35) being connected to the piston rod of the hydraulic cylinder (32).

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