Hydraulic valve group of electro-hydraulic numerical control bending machine

Abstract

The utility model discloses a hydraulic valve group of electro -hydraulic numerical control bending machine specifically relates to hydraulic valve group technical field, including main valve body, the inside of main valve body is provided with liquid inlet pipe, and the output of liquid inlet pipe is installed with two shunt liquid supply pipe, and the inside of main valve body is installed with worm, and the upper end of worm is installed with screw rod, and the inside of main valve body is installed with two sliding rod, and the inside of main valve body is provided with adjusting plate, and adjusting plate is with screw rod thread connection, and adjusting plate is with two sliding rod sliding connection, and the lower end of adjusting plate is installed with four connecting rods. The utility model discloses through rotating handle drive connecting shaft and worm rotation, and worm drive worm rotation, and then drive upper end screw rod rotation, make and be connected with the adjusting plate of screw thread along two sliding rod vertical movement, and adjusting plate passes through four connecting rods again and drives four support arc plate synchronous lifting, finally makes support arc plate from main valve body inside tightly holds and clamps shunt liquid supply pipe, has realized the stable operation of hydraulic valve group.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve assembly technology, and more specifically, to a hydraulic valve assembly for an electro-hydraulic CNC bending machine. Background Technology

[0002] Currently, electro-hydraulic CNC bending machines are mainly used for sheet metal processing. They can automatically calculate the mechanical position based on the angle, reducing the difficulty of operation and improving work efficiency. The hydraulic valve group of the electro-hydraulic CNC bending machine is the "control center" of its hydraulic system. By receiving electrical signals from the CNC system, it precisely controls the flow direction, pressure and flow rate of hydraulic oil, thereby driving the oil cylinder to complete various complex bending actions.

[0003] Chinese Patent Publication No. CN221942862U discloses a hydraulic valve assembly, particularly a hydraulic valve assembly that facilitates maintenance. By adding a rotating door, a latch, and a hollow valve body, when the hydraulic valve assembly malfunctions, the latch is unlocked, and then the rotating door is opened. At this time, the components inside the hollow valve body can be directly observed, allowing technicians to directly diagnose and repair the hydraulic valve assembly. This greatly facilitates the maintenance work of technicians on the components inside the valve body and improves the operating efficiency of the hydraulic valve assembly.

[0004] The aforementioned patented valve body has a hollow structure, and the pipe is installed inside the hollow valve body. Although this facilitates maintenance, it weakens the structural strength. Since the pipe is suspended without support inside the valve body, it is prone to deformation or fatigue cracks when under pressure, making it difficult to support long-term use. Utility Model Content

[0005] The present invention provides a hydraulic valve group for an electro-hydraulic CNC bending machine, which aims to solve the problem that the pipe body is suspended in the valve body without support, which makes the pipe body prone to deformation or fatigue cracks when under pressure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic valve group for an electro-hydraulic CNC bending machine, comprising a main valve body, an inlet pipe inside the main valve body, two diversion pipes installed at the output end of the inlet pipe, a worm gear inside the main valve body, a lead screw installed at the upper end of the worm gear, two sliding rods inside the main valve body, an adjusting plate inside the main valve body, the adjusting plate being threadedly connected to the lead screw, the adjusting plate being slidably connected to the two sliding rods, four connecting rods installed at the lower end of the adjusting plate, a supporting arc plate installed at the end of the connecting rods away from the adjusting plate, the diversion pipes being inserted into the supporting arc plate, a driving mechanism on the main valve body, and an external pipe connection mechanism on the diversion pipes.

[0007] In a preferred embodiment, the output end of the drive mechanism is connected to the worm gear. The drive mechanism is used to control the lifting and lowering movement of the support arc plate. The drive mechanism includes a meshing component and a hand crank component. The output end of the meshing component is connected to the worm gear and is used to control the rotational movement of the worm gear. The output end of the hand crank component is connected to the meshing component and is used to control the rotational movement of the meshing component.

[0008] In a preferred embodiment, the meshing assembly includes a support frame mounted inside the main valve body and a worm gear disposed inside the support frame, the worm gear meshing with a worm.

[0009] In a preferred embodiment, the hand crank assembly includes a connecting shaft installed inside a support frame and a rotating handle installed at the front end of the connecting shaft, with a worm gear fixedly connected to the connecting shaft.

[0010] In a preferred embodiment, the external pipeline connection mechanism is used to control the hydraulic oil in the diversion infusion pipe. The external pipeline connection mechanism includes a valve assembly and a detection assembly. The valve assembly is used to control the flow direction, pressure and flow rate of the hydraulic oil, and the detection assembly is used to detect the pressure in the diversion infusion pipe.

[0011] In a preferred embodiment, the valve assembly includes a plurality of connecting pipes mounted on the surface of the diversion infusion line, a first connecting joint mounted on the upper end of the connecting pipes, and a hydraulic valve body mounted on the upper end of the first connecting joint.

[0012] In a preferred embodiment, the detection assembly includes a second connector mounted on the end of the shunt infusion tube away from the inlet tube and a hydraulic gauge mounted on the surface of the front second connector.

[0013] In a preferred embodiment, a maintenance assembly is provided on the main valve body to facilitate access to the interior of the main valve body for maintenance. The maintenance assembly includes a left sealing plate installed on the surface of the main valve body, a right sealing plate installed on the surface of the main valve body, a front sealing plate installed on the surface of the main valve body, and an observation window provided on the surface of the front sealing plate.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention combines an internally adjustable support arc plate structure with a worm gear drive mechanism, which effectively enhances the internal support strength of the diversion and delivery pipe, significantly avoids the deformation and fatigue cracking problems of the pipeline under high pressure, and realizes the long-term stable operation of the hydraulic valve group under high-intensity working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the valve body of this utility model in an explosion.

[0019] Figure 4 This is a schematic diagram of the external pipe connection mechanism of this utility model.

[0020] Figure 5 This is a schematic diagram of the stabilizing component of this utility model.

[0021] Figure 6 This is an exploded view of the drive mechanism of this utility model.

[0022] The attached diagram is labeled as follows: 1. Main valve body; 11. Inlet pipe; 12. Diverter pipe; 13. Worm gear; 14. Lead screw; 15. Slide rod; 16. Adjusting plate; 17. Connecting rod; 18. Support arc plate; 211. Support frame; 212. Worm gear; 221. Connecting shaft; 222. Rotary handle; 311. Connecting pipe; 312. First connecting joint; 313. Hydraulic valve body; 321. Second connecting joint; 322. Hydraulic gauge; 411. Left sealing plate; 412. Right sealing plate; 413. Front sealing plate; 414. Observation window. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Refer to the instruction manual appendix Figures 1 to 6 A hydraulic valve assembly for an electro-hydraulic CNC bending machine includes a main valve body 1. An inlet pipe 11 is installed inside the main valve body 1. Two diversion pipes 12 are installed at the output end of the inlet pipe 11. A worm gear 13 is installed inside the main valve body 1. A lead screw 14 is installed at the upper end of the worm gear 13. Two sliding rods 15 are installed inside the main valve body 1. An adjusting plate 16 is installed inside the main valve body 1. The adjusting plate 16 is threadedly connected to the lead screw 14 and slidably connected to the two sliding rods 15. Four connecting rods 17 are installed at the lower end of the adjusting plate 16. A supporting arc plate 18 is installed at the end of the connecting rods 17 away from the adjusting plate 16. The diversion pipes 12 are inserted into the supporting arc plate 18. A drive mechanism is provided on the main valve body 1, and an external pipe connection mechanism is provided on the diversion pipes 12.

[0025] It should be noted that the core innovation of this hydraulic valve group lies in the fact that it forms an adjustable internal pipeline support system through the lead screw 14, slide rod 15, adjusting plate 16, connecting rod 17 and supporting arc plate 18. This system can provide solid support for the diversion and delivery pipe 12 from inside the main valve body 1, effectively resisting the vibration and deformation caused by hydraulic pulses and pressure fluctuations.

[0026] It is worth noting that this design, while ensuring ease of maintenance, fundamentally solves the technical problem of pipes being suspended without support and prone to deformation or fatigue cracking under pressure, thus achieving a balance between structural strength and maintainability.

[0027] Refer to the instruction manual appendix Figures 1 to 6 The output end of the drive mechanism is connected to the worm 13. The drive mechanism is used to control the lifting and lowering movement of the support arc plate 18. The drive mechanism includes a meshing component and a hand crank component. The output end of the meshing component is connected to the worm 13. The meshing component is used to control the rotational movement of the worm 13. The output end of the hand crank component is connected to the meshing component. The hand crank component is used to control the rotational movement of the meshing component.

[0028] It should be noted that the drive mechanism adopts a mechanical scheme of worm gear 212 and worm 13 transmission combined with lead screw 14 lifting. The worm gear 212 and worm 13 transmission has a large reduction ratio and self-locking characteristics, which means that only a simple manual input can output huge torque to drive lead screw 14, and once the operation stops, the mechanism will maintain its position due to self-locking, and the support state is very stable.

[0029] Refer to the instruction manual appendix Figure 6 The meshing assembly includes a support frame 211 installed inside the main valve body 1 and a worm gear 212 disposed inside the support frame 211, the worm gear 212 meshing with the worm 13.

[0030] It should be noted that the support frame 211 provides a stable and precise mounting reference for the worm gear 212, ensuring that the center distance between the worm gear 212 and the worm 13 is constant, the meshing is accurate, and the transmission is smooth.

[0031] Refer to the instruction manual appendix Figure 6 The hand crank assembly includes a connecting shaft 221 installed inside the support frame 211 and a rotating handle 222 installed at the front end of the connecting shaft 221. The worm gear 212 is fixedly connected to the connecting shaft 221.

[0032] It should be noted that the rotating handle 222 drives the worm gear 212 to rotate through the connecting shaft 221, realizing rapid adjustment of the support state and greatly improving the convenience of operation and work efficiency.

[0033] Refer to the instruction manual appendix Figures 1 to 4The external pipeline connection mechanism is used to control the hydraulic oil in the diversion and delivery pipe 12. The external pipeline connection mechanism includes a valve assembly and a detection assembly. The valve assembly is used to control the flow direction, pressure and flow rate of the hydraulic oil, and the detection assembly is used to detect the pressure in the diversion and delivery pipe 12.

[0034] It should be noted that the external pipeline connection mechanism is the functional execution unit of the hydraulic valve group. It converts the electrical signals from the CNC system into hydraulic actions and integrates status monitoring functions. It is the key to achieving high-precision CNC bending of the bending machine.

[0035] It is worth noting that all interfaces of the device are standardized and modular, which facilitates the quick replacement or addition / removal of functional valve blocks according to different bending process requirements, thereby improving the equipment's versatility and configurability.

[0036] Refer to the instruction manual appendix Figure 4 The valve assembly includes multiple connecting pipes 311 mounted on the surface of the diversion infusion pipe 12, a first connecting joint 312 mounted on the upper end of the connecting pipe 311, and a hydraulic valve body 313 mounted on the upper end of the first connecting joint 312.

[0037] It should be noted that the hydraulic valve body 313 is modularly installed on the diversion pipe 12 through the first coupling 312 and the coupling pipe 311. This integrated design greatly shortens the hydraulic oil circuit between valve blocks, reduces pressure loss and leakage points, and improves the system response speed and reliability.

[0038] Refer to the instruction manual appendix Figure 4 The detection assembly includes a second connector 321 installed at the end of the diversion infusion tube 12 away from the infusion tube 11 and a hydraulic gauge 322 installed on the surface of the front second connector 321.

[0039] It should be noted that the hydraulic gauge 322 is installed at the end of the pipeline and can intuitively and accurately display the actual working pressure of the oil in that line, providing a direct basis for system debugging, fault diagnosis and process parameter verification.

[0040] Refer to the instruction manual appendix Figure 3 The main valve body 1 is provided with a maintenance component, which is used to facilitate access to the interior of the main valve body 1 for maintenance. The maintenance component includes a left sealing plate 411 installed on the surface of the main valve body 1, a right sealing plate 412 installed on the surface of the main valve body 1, a front sealing plate 413 installed on the surface of the main valve body 1, and an observation window 414 provided on the surface of the front sealing plate 413.

[0041] It should be noted that the design of multiple detachable sealing plates provides great convenience for maintenance. Technicians can open the plate covers and operate the internal components directly without completely disassembling the entire valve assembly, which significantly reduces maintenance time and workload.

[0042] Working principle: Hydraulic oil enters the main valve body 1 from the inlet pipe 11 and flows through two branch pipes 12. The hydraulic valve body 313 receives electrical signals from the CNC system, thereby precisely controlling the flow direction, pressure, and flow rate of the hydraulic oil in each branch to drive the bending machine cylinder. During operation, the branch pipes 12 are subjected to hydraulic pulsation and pressure impact. To prevent deformation or cracking, the operator can rotate the connecting shaft 221 and worm gear 212 by rotating the rotating handle 222 in the drive mechanism. The worm gear 212 drives the worm 13 meshing with it to rotate. The worm 13 drives the upper lead screw 14 to rotate. The adjusting plate 16, which is threaded to the lead screw 14, then moves vertically along the two slide rods 15. The adjusting plate 16 moves in a straight line, and the four supporting arc plates 18 are driven to rise and fall synchronously through the four connecting rods 17 until the supporting arc plates 18 tightly support and clamp the diversion infusion pipe 12 from inside the main valve body 1, providing it with solid internal support. The self-locking characteristic of the worm gear 212 and worm 13 drives the support position to be locked. The system pressure can be monitored in real time by the hydraulic gauge 322 installed on the second connector 321 at the end of the diversion infusion pipe 12. When maintenance is required, the left sealing plate 411, right sealing plate 412 or front sealing plate 413 in the maintenance assembly can be disassembled, and the internal condition can be observed through the observation window 414, so as to conveniently maintain the internal components of the main valve body 1.

[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A hydraulic valve assembly for an electro-hydraulic CNC bending machine, characterized in that, The system includes a main valve body (1), an inlet pipe (11) inside the main valve body (1), two diversion infusion pipes (12) installed at the output end of the inlet pipe (11), a worm gear (13) inside the main valve body (1), a lead screw (14) installed at the upper end of the worm gear (13), two slide rods (15) inside the main valve body (1), an adjusting plate (16) inside the main valve body (1), the adjusting plate (16) is threadedly connected to the lead screw (14), the adjusting plate (16) is slidably connected to the two slide rods (15), four connecting rods (17) are installed at the lower end of the adjusting plate (16), a supporting arc plate (18) is installed at the end of the connecting rod (17) away from the adjusting plate (16), the diversion infusion pipes (12) are inserted into the interior of the supporting arc plate (18), a driving mechanism is provided on the main valve body (1), and an external pipe connection mechanism is provided on the diversion infusion pipes (12).

2. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 1, characterized in that, The output end of the drive mechanism is connected to the worm (13). The drive mechanism is used to control the lifting and lowering motion of the support arc plate (18). The drive mechanism includes a meshing component and a hand crank component. The output end of the meshing component is connected to the worm (13). The meshing component is used to control the rotational motion of the worm (13). The output end of the hand crank component is connected to the meshing component. The hand crank component is used to control the rotational motion of the meshing component.

3. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 2, characterized in that, The meshing assembly includes a support frame (211) installed inside the main valve body (1) and a worm gear (212) disposed inside the support frame (211), the worm gear (212) meshing with the worm (13).

4. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 3, characterized in that, The hand crank assembly includes a connecting shaft (221) installed inside the support frame (211) and a rotating handle (222) installed at the front end of the connecting shaft (221). The worm gear (212) is fixedly connected to the connecting shaft (221).

5. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 1, characterized in that, The external pipeline connection mechanism is used to control the hydraulic oil in the diversion pipeline (12). The external pipeline connection mechanism includes a valve assembly and a detection assembly. The valve assembly is used to control the flow direction, pressure and flow rate of the hydraulic oil, and the detection assembly is used to detect the pressure in the diversion pipeline (12).

6. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 5, characterized in that, The valve assembly includes multiple connecting pipes (311) mounted on the surface of the diversion infusion pipe (12), a first connecting joint (312) mounted on the upper end of the connecting pipes (311), and a hydraulic valve body (313) mounted on the upper end of the first connecting joint (312).

7. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 6, characterized in that, The detection assembly includes a second connector (321) installed on the end of the shunt infusion tube (12) away from the inlet tube (11) and a hydraulic gauge (322) installed on the surface of the front second connector (321).

8. The hydraulic valve assembly of an electro-hydraulic CNC bending machine according to claim 1, characterized in that, The main valve body (1) is provided with a maintenance component. The maintenance component is used to facilitate access to the inside of the main valve body (1) for maintenance. The maintenance component includes a left sealing plate (411) installed on the surface of the main valve body (1), a right sealing plate (412) installed on the surface of the main valve body (1), a front sealing plate (413) installed on the surface of the main valve body (1), and an observation window (414) provided on the surface of the front sealing plate (413).

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