Multi-functional buckle press valve group

Abstract

This utility model discloses a multifunctional crimping machine valve assembly, belonging to the field of hydraulic transmission technology. The multifunctional crimping machine valve assembly includes a hydraulic valve body. A sequence valve is connected to the top of the hydraulic valve body, and a pressure relief valve is connected to one side of the hydraulic valve body near the top. A hydraulic electromagnetic reversing component is installed on one side of the hydraulic valve body to control the oil circuit reversal of the hydraulic system. A slow-speed valve is connected to one side of the hydraulic valve body near the bottom. Electromagnetic coils are sleeved on the outer walls of both the slow-speed valve and the pressure relief valve. A hydraulic relief valve is connected to the front end of the hydraulic valve body. This utility model, through the design of the hydraulic electromagnetic reversing component, combines the rapid response characteristics of the electromagnetic reversing valve with the pressure-maintaining function of the hydraulic pressure-holding valve to achieve precise directional control and pressure maintenance of the crimping machine's actuators, meeting the multi-stage requirements for speed and force during the crimping process.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic transmission technology, and in particular to a multifunctional crimping machine valve assembly. Background Technology

[0002] In the industrial production field, crimping machines are a key piece of equipment widely used in many industries such as vehicles, construction machinery, hydraulic machinery, and welding and cutting equipment. Their main function is to firmly crimp metal joints onto various pipe fittings, such as high-pressure oil pipes for construction machinery, brake pipes, oil pipes, air conditioning pipes, power pipes for automobiles, as well as building accessories and daily hot water and gas pipes. The crimping machine completes the crimping operation of the pipe fittings by applying contractile force to the matching metal joints with the help of its own mold.

[0003] Existing crimping machine valve assemblies have relatively simple functions and cannot meet the complex and ever-changing crimping process requirements. Some valve assemblies can only achieve simple reversing functions and cannot accurately control and effectively maintain the system pressure. When facing situations such as large drilling tools that require high pressure for crimping, the hydraulic system of ordinary valve assemblies is often inadequate, resulting in poor forming effect of pipe fittings and seriously affecting the forming degree and quality of pipe fittings.

[0004] Therefore, there is an urgent need to provide a multi-functional crimping machine valve assembly to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a multi-functional crimping machine valve assembly.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a multi-functional crimping machine valve group, including a hydraulic valve body, a sequence valve connected to the top of the hydraulic valve body, and a pressure relief valve connected to one side of the hydraulic valve body near the top.

[0007] A hydraulic electromagnetic reversing component for multi-action control of the hydraulic system is provided on one side of the hydraulic valve body.

[0008] A slow-speed valve is connected to one side of the hydraulic valve body near the bottom. Both the slow-speed valve and the pressure relief valve have electromagnetic coils sleeved on their outer walls. Fixing screws are connected between the two electromagnetic coils and the corresponding valve bodies. A hydraulic relief valve is rotatably connected to the front end of the hydraulic valve body.

[0009] The present invention is further configured such that: the hydraulic valve body adopts a modular integrated design, and the internal oil passage adopts a labyrinth layout.

[0010] Through the above technical solutions, modular integration can significantly reduce the overall volume of the valve group, allowing each valve component to be arranged compactly, adapting to the stringent installation space requirements of equipment such as crimping machines, facilitating system integration and layout optimization. The labyrinthine oil passages extend the oil flow path, and the flow rate and pressure can be precisely adjusted by utilizing the oil passage wall resistance. In conjunction with the sequence valves and pressure relief valves in the valve group, more delicate pressure and flow control can be achieved, improving the stability and accuracy of the crimping action.

[0011] The present invention is further configured such that: the hydraulic electromagnetic reversing assembly includes a hydraulic pressure holding valve installed on one side of the hydraulic valve body, the hydraulic pressure holding valve having multiple through holes inside, an electromagnetic reversing valve installed on the other side of the hydraulic pressure holding valve, and a fixing screw rotatably connected to the other side of the electromagnetic reversing valve.

[0012] With the above technical solution, when assembling components, the fixing screw passes through the through holes of the solenoid directional valve and the hydraulic pressure holding valve, and is precisely screwed into the corresponding screw hole of the hydraulic valve body. The screw fastening force tightly connects the solenoid directional valve, the hydraulic pressure holding valve and the hydraulic valve body to form a stable overall structure. During operation, after the solenoid coil is energized, the solenoid directional valve generates electromagnetic force to drive the valve core to move, thereby changing the flow direction of hydraulic oil between the hydraulic valve body and the external actuator, and controlling the action direction of the crimping machine. The hydraulic pressure holding valve maintains the system pressure stability according to the system pressure requirements through the internal pressure control structure.

[0013] The present invention is further configured such that: a sealing groove is provided on the connection surface between the hydraulic pressure holding valve and the hydraulic valve body, and an O-ring is embedded in the groove.

[0014] With the above technical solution, the hydraulic system of the crimping machine is usually under high pressure when it is working. The O-ring seals are squeezed and deformed to fill the sealing groove, forming an annular sealing band, which effectively prevents oil leakage, avoids system pressure loss, and ensures the stability and accuracy of the crimping process.

[0015] The present invention is further configured such that a screw hole corresponding to the fixing screw is provided on one side of the hydraulic valve body.

[0016] The above technical solution ensures a tight connection between the hydraulic pressure holding valve, the electromagnetic directional valve, and the hydraulic valve body in the hydraulic electromagnetic reversing assembly through the fastening action of the fixing screw.

[0017] The present invention is further configured such that the connection surfaces between the valve ports of the sequence valve, the pressure relief valve, and the slow valve and the hydraulic valve body all adopt a conical sealing structure.

[0018] Through the above technical solution, the conical structure utilizes the principle of inclined extrusion. When the bolt is tightened, the valve port and the sealing surface of the hydraulic valve body form a line contact. Compared with the flat seal, the contact pressure is greater, which can effectively resist the impact of high-pressure oil when the crimping machine is working and eliminate the risk of leakage.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model, through the design of a hydraulic electromagnetic reversing component, combines the rapid response characteristics of the electromagnetic reversing valve with the pressure maintenance function of the hydraulic pressure holding valve to achieve precise directional control and pressure maintenance of the crimping machine's actuators, meeting the multi-stage requirements for speed and force during the crimping process. The modular design allows for the overall disassembly or replacement of the components, restoring system functionality without complex debugging, significantly reducing downtime. At the same time, the detachable structure of the fixing screw facilitates the inspection of valve core wear, sealing ring aging, and other problems, reducing maintenance costs.

[0021] 2. This utility model designs the valve ports of the sequence valve, pressure relief valve, and slow speed valve as conical sealing structures. The conical structure has lower requirements for coaxiality during installation than the planar seal. Even if there is a slight offset, effective sealing can still be achieved through conical contact, reducing assembly difficulty and avoiding leakage problems caused by installation errors. It is especially suitable for rapid on-site installation and commissioning. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a front view of the present invention;

[0024] Figure 3 This is a top view of the present invention;

[0025] Figure 4 This is a schematic diagram of the hydraulic electromagnetic reversing assembly of this utility model.

[0026] In the diagram: 1. Hydraulic valve body; 2. Sequence valve; 3. Pressure relief valve; 4. Hydraulic solenoid reversing assembly; 401. Hydraulic pressure holding valve; 402. Through hole; 403. Solenoid reversing valve; 404. Fixing screw; 5. Slow speed valve; 6. Solenoid coil; 7. Fixing screw; 8. Hydraulic relief valve. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0028] Please see Figures 1-3A multi-functional crimping machine valve assembly includes a hydraulic valve body 1. The hydraulic valve body 1 adopts a modular integrated design and an internal oil passage with a labyrinth layout. The modular integration can significantly reduce the overall volume of the valve assembly, allowing the valve components to be arranged compactly, adapting to the stringent installation space requirements of crimping machines and other equipment, facilitating system integration and layout optimization. The labyrinth oil passage extends the oil flow path, and the flow rate and pressure can be precisely adjusted by utilizing the oil passage wall resistance. In conjunction with the sequence valve 2 and pressure relief valve 3 in the valve assembly, more delicate pressure and flow control can be achieved, improving the stability and accuracy of the crimping action. The top of the hydraulic valve body 1 is rotatably connected to the sequence valve 2, and the side of the hydraulic valve body 1 near the top is connected to the pressure relief valve 3.

[0029] like Figure 4 As shown, a hydraulic electromagnetic reversing assembly 4 for multi-action control of the hydraulic system is provided on one side of the hydraulic valve body 1. The hydraulic electromagnetic reversing assembly 4 includes a hydraulic pressure holding valve 401 installed on one side of the hydraulic valve body 1. A sealing groove is opened on the connection surface between the hydraulic pressure holding valve 401 and the hydraulic valve body 1, and an O-ring is embedded in the groove. When the crimping machine is working, the hydraulic system is usually under high pressure. The O-ring fills the sealing groove by compression deformation, forming an annular sealing band, which effectively prevents oil leakage, avoids system pressure loss, and ensures the crimping process. To ensure stability and precision, the hydraulic pressure holding valve 401 has multiple through holes 402 inside. An electromagnetic directional valve 403 is installed on the other side of the hydraulic pressure holding valve 401. A fixing screw 404 is rotatably connected to the other side of the electromagnetic directional valve 403. A screw hole corresponding to the fixing screw 404 is opened on one side of the hydraulic valve body 1. The precisely matched screw hole can ensure the tight connection between the hydraulic pressure holding valve 401, the electromagnetic directional valve 403 and the hydraulic valve body 1 in the hydraulic electromagnetic directional assembly 4, through the fastening action of the fixing screw 404.

[0030] like Figure 4 As shown, during component assembly, the fixing screw 404 passes through the through hole 402 of the solenoid directional valve 403 and the hydraulic pressure holding valve 401, and is precisely screwed into the corresponding screw hole of the hydraulic valve body 1. The solenoid directional valve 403, the hydraulic pressure holding valve 401 and the hydraulic valve body 1 are tightly connected by the thread tightening force to form a stable overall structure. During operation, after the solenoid coil 6 is energized, the solenoid directional valve 403 generates electromagnetic force to drive the valve core to move, thereby changing the flow direction of hydraulic oil between the hydraulic valve body 1 and the external actuator, and controlling the action direction of the crimping machine. The hydraulic pressure holding valve 401 maintains the system pressure stability through the internal pressure control structure according to the system pressure requirements.

[0031] like Figures 1-3As shown, a slow-speed valve 5 is connected to one side of the hydraulic valve body 1 near the bottom. The valve ports of the sequence valve 2, pressure relief valve 3, and slow-speed valve 5 all adopt a conical sealing structure for their connection surfaces with the hydraulic valve body 1. The conical structure utilizes the principle of inclined plane extrusion. When the bolts are tightened, the valve port and the sealing surface of the hydraulic valve body 1 form a line contact. Compared with a flat seal, the contact pressure is greater, which can effectively resist the impact of high-pressure oil during the operation of the crimping machine and eliminate the risk of leakage. The outer walls of the slow-speed valve 5 and the pressure relief valve 3 are both fitted with electromagnetic coils 6. The two electromagnetic coils 6 and the corresponding valve bodies are rotatably connected with fixing screws 7. The front end of the hydraulic valve body 1 is rotatably connected with a hydraulic relief valve 8.

[0032] In use, after the multi-functional crimping machine valve assembly is started, hydraulic oil flows into each functional valve through the labyrinthine oil passage of the hydraulic valve body 1. The sequence valve 2 opens first according to the preset pressure to control the oil flow direction. When the system pressure meets the usage requirements and the required reversal is completed, the pressure relief valve 3 opens under the drive of the solenoid coil 6 to quickly release excess pressure to protect system safety. In the hydraulic solenoid reversing assembly 4, the solenoid reversing valve 403 is energized by the solenoid coil 6 to drive the valve core to change the oil flow direction, so that the crimping machine actuator can complete actions such as clamping and releasing the crimping. At the same time, the pressure sensor monitors the pressure in real time. When the set value is reached, the internal structure maintains the pressure. Stable force, preventing oil backflow, and ensuring crimping accuracy, the slow-speed valve 5, under the control of the solenoid coil 6, regulates the oil flow rate through its internal throttling structure to achieve slow and precise movements of the actuator, adapting to different working conditions. The hydraulic relief valve 8 serves as the final line of defense against system pressure, automatically opening to overflow when the pressure exceeds the limit, preventing equipment overload damage. All valves are compactly arranged by the modularly integrated hydraulic valve body 1, and high-pressure sealing is ensured by the sealing groove, O-ring, and conical sealing structure. The fixed screw 404 and corresponding screw hole ensure structural stability, working together to complete the precise control of the entire process of the crimping machine from start-up, pressurization, reversing, pressure holding to pressure release.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-functional crimping machine valve assembly, comprising a hydraulic valve body (1), characterized in that: A sequence valve (2) is connected to the top of the hydraulic valve body (1), and a pressure relief valve (3) is connected to one side of the hydraulic valve body (1) near the top. A hydraulic electromagnetic reversing assembly (4) for multi-action control of the hydraulic system is provided on one side of the hydraulic valve body (1). A slow valve (5) is rotatably connected to one side of the hydraulic valve body (1) near the bottom. Electromagnetic coils (6) are sleeved on the outer walls of the slow valve (5) and the pressure relief valve (3). Fixing screws (7) are connected between the two electromagnetic coils (6) and the corresponding valve bodies. A hydraulic relief valve (8) is connected to the front end of the hydraulic valve body (1).

2. The multifunctional crimping machine valve assembly according to claim 1, characterized in that: The hydraulic valve body (1) adopts a modular integrated design, and the internal oil passages adopt a labyrinth layout.

3. The multifunctional crimping machine valve assembly according to claim 1, characterized in that: The hydraulic electromagnetic reversing assembly (4) includes a hydraulic pressure holding valve (401) installed on one side of the hydraulic valve body (1). The hydraulic pressure holding valve (401) has multiple through holes (402) inside. An electromagnetic reversing valve (403) is installed on the other side of the hydraulic pressure holding valve (401). A fixing screw (404) is rotatably connected to the other side of the electromagnetic reversing valve (403).

4. A multifunctional crimping machine valve assembly according to claim 3, characterized in that: The connection surface between the hydraulic pressure holding valve (401) and the hydraulic valve body (1) is provided with a sealing groove, and an O-ring is embedded in the groove.

5. A multifunctional crimping machine valve assembly according to claim 3, characterized in that: The hydraulic valve body (1) has a screw hole on one side that corresponds to the fixing screw (404).

6. A multifunctional crimping machine valve assembly according to claim 1, characterized in that: The connection surfaces between the valve ports of the sequence valve (2), pressure relief valve (3), and slow valve (5) and the hydraulic valve body (1) all adopt a conical sealing structure.

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