Multi-layer guide device for oil cylinder pump body of hydraulic press

Abstract

The utility model provides a hydraulic machine oil cylinder pump body multi-layer guide device, which relates to the technical field of hydraulic machines, and comprises a plate frame and guide pipes, the plate frame is a plate frame body which is symmetrically arranged up and down, the guide pipes are arranged at all corners of the plate frame in a penetrating manner, and a cylinder groove is formed in the plate frame; the guide pipe comprises a first shaft handle seat, two shaft discs, an outer guide shaft, a second shaft handle seat and an inner guide shaft, the two shaft discs are respectively fixed at one end of the guide pipe, and a guide groove is formed between each shaft disc and the interior of the guide pipe; the guide mechanism has the advantages that the progressive moving mode of the hydraulic oil cylinder is matched through the multi-layer arrangement structure of the inner guide shaft and the outer guide shaft, and compared with a traditional guide mechanism, short-stroke sliding and long-stroke sliding are matched through sliding changes, connection and separation of the inner guide shaft and the outer guide shaft in the two sections of guide grooves; and the piston rod of the oil cylinder is matched to perform directional axial movement.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, and relates to a multi-layer guide device for a hydraulic press oil cylinder pump body. 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 forming processes. Compared with traditional stamping processes, hydraulic forming processes have obvious technical and economic advantages in reducing weight, reducing the number of parts and molds, improving rigidity and strength, and reducing production costs.

[0003] The driving system of the hydraulic press mainly includes two types: pump direct drive and pump-accumulator drive. The pump of the pump direct drive provides high-pressure working fluid to the hydraulic cylinder, the distribution valve is used to change the direction of fluid supply, and the overflow valve is used to adjust the limited pressure of the system and play a safety overflow role. Since the pump body drive has a progressive up and down pressure effect on the cylinder body and the piston rod, the traditional guide structure adopts a multi-column sliding rod mechanism. During the entire up and down process of the cylinder body, the sliding rod moves horizontally. Due to the frequent up and down switching of the cylinder body and the difference in the change of the piston rod stroke, the single-rod sliding shaft has a certain guide sliding tolerance accumulation, and the resulting offset will not only increase the actual up and down motion energy loss of the piston rod, but also accelerate the wear of the movable structural components of the cylinder body. Utility Model Content

[0004] In view of the above-mentioned technical problems existing in the prior art, a multi-layer guide device for a hydraulic cylinder pump body is provided to solve the problems of the prior art guide structure's risk of deviation and accelerated wear of the cylinder body's movable structure during the up and down movement of the hydraulic cylinder.

[0005] The purpose and effect of the utility model are achieved by the following specific technical means:

[0006] A multi-layer guide device for a hydraulic cylinder pump body, comprising a disc frame and a guide pipe, wherein the disc frame is a plate frame body symmetrically arranged up and down, the guide pipe is passed through each corner of the disc frame, and a cylinder groove is provided in a groove in the disc frame;

[0007] The guide tube includes a first shaft handle seat, a shaft disc, an outer guide shaft, a second shaft handle seat and an inner guide shaft. The shaft disc is provided with two pieces and is respectively fixed at one end of the guide tube, and a guide groove is formed between each shaft disc and the inside of the guide tube. The outer guide shaft and the inner guide shaft are respectively penetrated in one of the guide grooves, and the outer guide shaft and the inner guide shaft both penetrate the outer ends of the guide tube and the shaft disc. The first shaft handle seat is fixed at the outer end of the outer guide shaft, and the second shaft handle seat is penetrated outside the shaft disc near the inner guide shaft.

[0008] Adjacent ends of the outer guide shaft and the inner guide shaft are respectively fixed with a magnetically compatible suction handle head and a matching shaft handle.

[0009] A further preferred solution is that the outer ends of the first shaft handle seat and the second shaft handle seat are both penetrated to form a notch-shaped step surface groove.

[0010] A further preferred solution is that a limit plate is sleeved on one end of the outer guide shaft close to the suction handle head, and the limit plate and the inner wall of the guide groove form a limit step surface.

[0011] A further preferred solution is that a sealing ring is embedded in the connecting end between the outer guide shaft and the shaft disc.

[0012] A further preferred solution is that the cross-section of one end of the inner guide shaft close to the matching shaft handle is T-shaped, and the T-shaped end of the inner guide shaft is larger than the through-opening diameter at both ends of the guide groove.

[0013] A further preferred solution is that a shaft core head is fixed to one end of the inner guide shaft relative to the matching shaft handle, and an adapting socket is provided through the outer end of the shaft core head.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] This type of multi-layer guide device for the hydraulic cylinder pump body adapts to the progressive movement of the hydraulic cylinder through the multi-layer arrangement structure of the inner guide shaft and the outer guide shaft. Compared with the traditional guide mechanism, the sliding changes, connection and separation of the inner guide shaft and the outer guide shaft in the two-section guide groove are utilized to adapt to short-stroke sliding and long-stroke sliding, so as to cooperate with the cylinder piston rod to perform directional axial movement, thereby avoiding the problem of the displacement caused by tolerance accumulation affecting the cylinder structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the guide tube structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal planar structure of the guide tube of the utility model;

[0019] Figure 4 It is a schematic diagram of the active state of the guide tube of the utility model.

[0020] Markings in the figure: 1-disc frame; 2-guide tube; 3-cylinder groove; 4-first shaft handle seat; 5-shaft disc; 6-outer guide shaft; 7-second shaft handle seat; 8-sealing ring; 9-inner guide shaft; 10-limiting disc; 11-suction handle head; 12-shaft core head; 13-matching shaft handle. DETAILED DESCRIPTION

[0021] See also Figure 1-4 , the embodiments of the utility model are further described;

[0022] A multi-layer guide device for a hydraulic cylinder pump body, comprising a disc frame 1 and a guide tube 2, wherein the disc frame 1 is a plate frame body symmetrically arranged up and down, the guide tube 2 is passed through each corner of the disc frame 1, and a cylinder groove 3 is provided in the disc frame 1;

[0023] The guide tube 2 includes a first shaft handle seat 4, a shaft disc 5, an outer guide shaft 6, a second shaft handle seat 7 and an inner guide shaft 9. The shaft disc 5 is provided with two pieces and is respectively fixed at one end of the guide tube 2, and a guide groove is formed between each shaft disc 5 and the inside of the guide tube 2. The outer guide shaft 6 and the inner guide shaft 9 are respectively penetrated in one of the guide grooves, and the outer guide shaft 6 and the inner guide shaft 9 both penetrate the outer ends of the guide tube 2 and the shaft disc 5. The first shaft handle seat 4 is fixed at the outer end of the outer guide shaft 6, and the second shaft handle seat 7 is penetrated outside the shaft disc 5 near the inner guide shaft 9.

[0024] Adjacent ends of the outer guide shaft 6 and the inner guide shaft 9 are respectively fixed with a magnetically compatible suction handle head 11 and a matching shaft handle 13;

[0025] The guide device mainly arranges the guide tube 2 structure in correspondence with the double-layer disc frame 1 structure, wherein the preset cylinder groove 3 is used as the insertion space of the cylinder body part, and the groove diameter specification of the cylinder groove 3 corresponds to its cylinder body mounting part, and the outer guide shaft 6 and the inner guide shaft 9 in the guide tube 2 are driven to slide by the fixed linkage between the movable end of the cylinder piston rod and the disc frame 1, so as to stabilize the movement of the guide cylinder piston rod by the sliding cooperation between the whole disc frame 1 and the guide tube 2. Specifically, during the sliding process, the up and down movement of the cylinder piston rod will be carried out in a short stroke by the sliding of the outer guide shaft 6 along the guide groove in the guide tube 2 The inner guide shaft 9 at the other end has a longer stroke than the outer guide shaft 6 to adapt to the long-stroke sliding guide. When the piston rod is retracted inward as a whole, the sliding changes. The inward contraction of the inner guide shaft 9 and the outer guide shaft 6 and the magnetic fixation of the suction handle head 11 and the matching shaft handle 13 are used to correct the axial position of the entire sliding structure at one time, so as to avoid the tolerance accumulation caused by the subsequent asymptotic piston activity. This effectively avoids the problem of axial deviation in the traditional single-rod sliding guide structure affecting the stability of the cylinder activity, thereby improving the practicability and safety of the guide device.

[0026] Furthermore, the outer ends of the first shaft handle seat 4 and the second shaft handle seat 7 are both formed with concave step grooves. When installed and fixed, one end of the shaft handle seat can be used as a fixed end of the axial structure, and is fixed to the cylinder mounting structure through the step groove, so as to fix the corresponding end of the outer guide shaft 6 or the inner guide shaft 9 in the cylinder mounting structure for unidirectional sliding limitation, thereby improving the applicability of the device, and its connection method is based on the existing installation method of the hydraulic cylinder guide mechanism.

[0027] Furthermore, a limit plate 10 is sleeved on one end of the outer guide shaft 6 close to the suction handle head 11, and the limit plate 10 forms a limited step surface with the inner wall of the guide groove. The limit plate 10 is used to limit the outward extension limit position of the outer guide shaft 6 when it is telescopically slid outward, so as to maintain the stability of the sliding structure of the outer guide shaft 6.

[0028] On the basis of the above, a sealing ring 8 is embedded in the connecting end of the outer guide shaft 6 and the shaft disc 5. As the outer guide shaft 6 is connected to the outside of the shaft disc 5, the provided sealing ring 8 is used to isolate the through end position between the guide groove and the outer guide shaft 6 to prevent dust accumulation from affecting the activity of the shaft structure.

[0029] Furthermore, the cross-section of one end of the inner guide shaft 9 close to the matching shaft handle 13 is T-shaped, and the T-shaped end of the inner guide shaft 9 is larger than the through-opening diameter at both ends of the guide groove. By utilizing the T-shaped end of the inner guide shaft 9, while limiting the limit position of the matching shaft handle 13 when the inner guide shaft 9 moves upward, it can also limit the inner guide shaft 9 from escaping from the second shaft handle seat 7 when it moves downward, so as to improve the stability and safety of the inner guide shaft 9, and at the same time ensure the matching accuracy of the matching shaft handle 13 and the suction handle head 11.

[0030] Furthermore, an axis core head 12 is fixed to one end of the inner guide shaft 9 relative to the matching shaft handle 13, and an adaptor socket is provided at the outer end of the axis core head 12. The outer end of the inner guide shaft 9 can be connected and fixed to the end of the movable structure of the cylinder piston rod by using the axis core head 12 to adapt to the bidirectional sliding piston structure. The connection method is based on the existing installation method of the hydraulic cylinder guide mechanism, which improves the applicability of the guide device.

Claims

1. A multi-layer guide device for a hydraulic cylinder pump body, characterized in that: It comprises a disc frame (1) and a guide tube (2), wherein the disc frame (1) is a plate frame body symmetrically arranged in the upper and lower parts, the guide tube (2) is passed through each corner of the disc frame (1), and a cylinder groove (3) is provided in the disc frame (1); The guide tube (2) comprises a first shaft handle seat (4), a shaft disc (5), an outer guide shaft (6), a second shaft handle seat (7) and an inner guide shaft (9); the shaft disc (5) is provided with two pieces and is respectively fixed at one end of the guide tube (2); and a guide groove is formed between each shaft disc (5) and the inside of the guide tube (2); the outer guide shaft (6) and the inner guide shaft (9) are respectively penetrated in one of the guide grooves, and the outer guide shaft (6) and the inner guide shaft (9) both penetrate the outer ends of the guide tube (2) and the shaft disc (5); the first shaft handle seat (4) is fixed at the outer end of the outer guide shaft (6), and the second shaft handle seat (7) is penetrated outside the shaft disc (5) near the inner guide shaft (9); Adjacent ends of the outer guide shaft (6) and the inner guide shaft (9) are respectively fixed with a magnetically compatible suction handle head (11) and a matching shaft handle (13).

2. A multi-layer guide device for a hydraulic cylinder pump body according to claim 1, characterized in that: The outer ends of the first shaft handle seat (4) and the second shaft handle seat (7) are both penetrated to form a notch-shaped step surface notch.

3. A multi-layer guide device for a hydraulic cylinder pump body according to claim 1, characterized in that: A limiting disk (10) is sleeved on one end of the outer guide shaft (6) close to the suction handle head (11), and the limiting disk (10) forms a limited step surface with the inner wall of the guide groove.

4. A multi-layer guide device for a hydraulic cylinder pump body according to claim 1, characterized in that: A sealing ring (8) is embedded in the connection end between the outer guide shaft (6) and the shaft disc (5).

5. The multi-layer guide device for a hydraulic cylinder pump body according to claim 1, characterized in that: The cross section of one end of the inner guide shaft (9) close to the matching shaft handle (13) is T-shaped, and the T-shaped end of the inner guide shaft (9) is larger than the through-opening diameters at both ends of the guide groove.

6. A multi-layer guide device for a hydraulic cylinder pump body according to claim 1, characterized in that: An end of the inner guide shaft (9) relative to the matching shaft handle (13) is fixed with a shaft core head (12), and an adaption socket is provided through the outer end of the shaft core head (12).

Images