Hydraulic valve for bending machine

Abstract

The utility model discloses a hydraulic valve for a bending machine, which relates to the technical field of hydraulic valves and comprises a hydraulic valve body, a protective box arranged on the outer side of the hydraulic valve body and a connecting mechanism arranged between the hydraulic valve body and the protective box. According to the hydraulic valve body protection device, the insertion rod is inserted into the protection box, the protection box and the hydraulic valve body can be preliminarily connected, the fixing rod can be automatically inserted into the insertion rod under the elastic force of the reset spring, and therefore the protection box and the hydraulic valve body can be further connected and fixed; the fixing block can be completely pressed into the sliding groove, the fixing block cannot hinder downward movement of the inserting rod, the rolling wheels can rotate to reduce resistance and abrasion to lateral pushing of the fixing block when the inserting rod moves downwards, the whole hydraulic valve body can be installed only by completely inserting the inserting rod into the protection box, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This application relates to the field of hydraulic valve technology, and in particular to a hydraulic valve for a bending machine. Background Technology

[0002] A hydraulic valve in a bending machine is a component used to control the flow direction, pressure, and flow rate of hydraulic fluid in a hydraulic system. It is primarily used in the hydraulic systems of bending machines to ensure their normal operation and precise control. A hydraulic valve is a device that can control the movement and working state of actuators by adjusting or changing parameters such as the flow direction, pressure, and flow rate of the hydraulic fluid in a hydraulic system.

[0003] Patent CN221401206U discloses "a corrosion-resistant hydraulic valve assembly, comprising a hydraulic valve assembly body and two protective plates. Base plates are installed on both sides of the outer wall of the hydraulic valve assembly body, and each of the two base plates contains an installation mechanism. Fixed rails are installed on the upper ends of both base plates, and both fixed rails are connected to the hydraulic valve assembly body." This invention protects the hydraulic valve assembly body with protective plates, achieving corrosion resistance. Furthermore, the two protective plates are easy to install and remove quickly without the need for auxiliary tools, improving installation convenience and extending the service life of the hydraulic valve assembly body. It also avoids the problem of corrosive liquids contacting the hydraulic valve assembly body, thus preventing a reduction in its service life.

[0004] Regarding the aforementioned technologies, the inventors believe that during the installation of hydraulic valve assemblies, workers need to squeeze the filler plate towards the spring side through the gripping hole, then insert the fixing rail into the through hole, and then loosen the filler plate, making the overall installation process rather cumbersome and inconvenient, and therefore needs to be improved. Utility Model Content

[0005] To address the aforementioned problems, this application provides a hydraulic valve for a bending machine.

[0006] The hydraulic valve for a bending machine provided in this application adopts the following technical solution:

[0007] A hydraulic valve for a bending machine includes a hydraulic valve body, a protective box disposed on the outside of the hydraulic valve body, and a connecting mechanism disposed between the hydraulic valve body and the protective box. The connecting mechanism includes two sets of insert rods fixedly disposed on both sides of the hydraulic valve body and fitted into the top of the protective box, two sets of sliding grooves opened on both sides of the inner wall of the protective box, and a fixing block slidably disposed in the sliding groove of the protective box and fitted into the insert rods at one end.

[0008] The protective box has a fixed return spring in the groove for pushing the fixing block toward the insertion rod. The top of one end of the fixing block has a guide slope for pressing the fixing block laterally into the groove when the insertion rod moves vertically downward. The bottom of the insertion rod near the fixing block has a roller that rotates.

[0009] By adopting the above technical solution, the protective box and the hydraulic valve body can be initially connected by inserting the insertion rod into the protective box. Under the elastic force of the return spring, the fixing rod can be automatically inserted into the insertion rod, thereby further connecting and fixing the protective box and the hydraulic valve body. The installation process of the hydraulic valve body can be completed simply by inserting the insertion rod completely into the protective box.

[0010] Preferably, the bottom of the protective box has several through holes for the hydraulic valve body pipeline to pass through, and the bottom of the inner wall of the protective box is fixedly provided with an air guide pipe, and a plug block located outside the protective box is movably provided inside one end of the air guide pipe.

[0011] By adopting the above technical solution, the air duct can connect the air at the bottom of the protective box with the outside air, thus preventing the hydraulic valve body from being blocked by air at the bottom of the protective box when it is taken out of the protective box.

[0012] Preferably, the protective box has two sets of insertion holes on both sides of the top, the insertion rod is inserted into the insertion hole of the protective box, the sliding groove is opened on one side of the insertion hole of the protective box, the insertion rod has a fixing hole on the side away from the hydraulic valve body, and one end of the fixing block is inserted into the fixing hole of the insertion rod.

[0013] By adopting the above technical solution, under the elastic force of the return spring, one end of the fixing block will be inserted into the fixing hole of the plug rod to further connect and fix the protective box and the hydraulic valve body, thereby installing the hydraulic valve body.

[0014] Preferably, the two sets of fixing blocks are fixedly provided with two sets of pull ropes that pass through and extend to the outside of the protective box at one end away from the insertion rod. A pressure ring is fixed between the bottom ends of the two sets of pull ropes. The pressure ring is slidably disposed on the outer wall of the matching protective box. Two sets of guide wheels are rotatably provided on both sides of the protective box for guiding the pull ropes.

[0015] By adopting the above technical solution, by pressing down the pressure ring and connecting it with the pull rope, the two sets of fixing blocks can be pulled away from the insertion rod at the same time, thereby detaching the hydraulic valve body from the fixing. This makes it easier for workers to press down the pressure ring with one hand and take the hydraulic valve body out of the protective box for inspection and maintenance with the other hand, making the disassembly and assembly of the hydraulic valve body simpler and more convenient.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. By inserting the insert rod into the protective box, the protective box and the hydraulic valve body can be initially connected. Under the elastic force of the return spring, the fixing rod can be automatically inserted into the insert rod, thereby further connecting and fixing the protective box and the hydraulic valve body. When the insert rod moves down, the guide slope can completely press the fixing block into the slide groove, so that the fixing block will not hinder the downward movement of the insert rod. The roller can reduce the resistance and wear of the lateral pushing of the fixing block when the insert rod moves down by rotating. The entire installation process of the hydraulic valve body can be completed simply by inserting the insert rod completely into the protective box, which is convenient and quick.

[0018] 2. The protective box protects and secures the hydraulic valve body. By pressing down the pressure ring and connecting it with the pull rope, both sets of fixing blocks can be pulled away from the insertion rod simultaneously, thus detaching the hydraulic valve body from its fixation. This allows workers to easily remove the hydraulic valve body from the protective box for inspection and maintenance while pressing down the pressure ring with one hand and using the other. This makes disassembly and assembly of the hydraulic valve body simpler and more convenient. The air guide pipe connects the air at the bottom of the protective box with the outside air, preventing air stagnation at the bottom of the protective box from hindering the disassembly of the hydraulic valve body. It is convenient and practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a hydraulic valve for a bending machine according to an embodiment of this application;

[0020] Figure 2 This is a front view connection diagram of the internal structure of a hydraulic valve for a bending machine according to an embodiment of this application;

[0021] Figure 3 The embodiments of this application mainly embody Figure 1 Enlarged view of the A-structure in the middle;

[0022] Figure 4 The embodiments of this application mainly embody Figure 2 Enlarged view of the B-structure;

[0023] Reference numerals: 1. Hydraulic valve body; 2. Protective box; 21. Through hole; 22. Air guide pipe; 23. Plug; 3. Insertion hole; 31. Insert rod; 32. Slide groove; 33. Fixing block; 34. Return spring; 35. Guide slope; 36. Roller; 37. Fixing hole; 4. Pull rope; 41. Pressure ring; 42. Guide wheel. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0025] This application discloses a hydraulic valve for a bending machine.

[0026] A hydraulic valve for a bending machine, as described in the reference Figure 1-2The system includes a hydraulic valve body 1, a protective box 2, and a connecting mechanism. The hydraulic valve body 1 is the hydraulic valve group of an existing bending machine. Its internal structure and principle have been disclosed and will not be described in detail here. The protective box 2 is located on the outside of the hydraulic valve body 1. The hydraulic valve body 1 is movably installed in the matching protective box 2. The protective box 2 can protect the side and bottom of the hydraulic valve body 1. The connecting mechanism can install and fix the hydraulic valve body 1 in the protective box 2.

[0027] Reference Figure 1-2 The bottom of the protective box 2 has several through holes 21 for the hydraulic valve body 1 pipeline to pass through. The bottom pipeline of the hydraulic valve body 1 can pass through the through holes 21 to connect with the external bending machine. The bottom of the inner wall of the protective box 2 is fixedly provided with an air guide pipe 22. One end of the air guide pipe 22 is movably provided with a plug 23 located outside the protective box 2. The air guide pipe 22 can connect the air at the bottom of the protective box 2 with the outside air, so as to avoid the hydraulic valve body 1 being blocked by the air trapped at the bottom of the protective box 2 when it is taken out of the protective box 2, thus preventing the hydraulic valve body 1 from being pulled out and disassembled. After the hydraulic valve body 1 is installed, the plug 23 can be used to block the air guide pipe 22 to ensure the seal inside the air guide pipe 22.

[0028] Reference Figure 1 , Figure 2 and Figure 4 The connecting mechanism includes two sets of insert rods 31 fixed on both sides of the hydraulic valve body 1 and inserted into the top of the protective box 2, two sets of sliding grooves 32 opened on both sides of the inner wall of the protective box 2, and a fixing block 33 slidably disposed in the sliding groove 32 of the protective box 2 and inserted into the insert rod 31 at one end. Two sets of insertion holes 3 are opened on both sides of the top of the protective box 2. The insert rods 31 are inserted into the insertion holes 3 of the protective box 2. The sliding grooves 32 are opened on one side of the insertion holes 3 of the protective box 2. By inserting the insert rods 31 into the insertion holes 3 of the protective box 2, the protective box 2 and the hydraulic valve body 1 can be initially connected. The protective box 2 can connect and limit one end of the fixing block 33 through the sliding grooves 32.

[0029] Reference Figure 1 , Figure 2 and Figure 4 The protective box 2 has a groove 32 with a return spring 34 for pushing the fixing block 33 toward the insertion rod 31. The insertion rod 31 has a fixing hole 37 on the side away from the hydraulic valve body 1. One end of the fixing block 33 is inserted into the fixing hole 37 of the insertion rod 31. Under the elastic force of the return spring 34, one end of the fixing block 33 will be inserted into the fixing hole 37 of the insertion rod 31 to further connect and fix the protective box 2 and the hydraulic valve body 1, thereby installing the hydraulic valve body 1.

[0030] Reference Figure 2 and Figure 4The top of one end of the fixing block 33 is provided with a guide slope 35 for pressing the fixing block 33 laterally into the slide groove 32 when the insertion rod 31 moves vertically downward. The bottom of the side of the insertion rod 31 near the fixing block 33 is provided with a roller 36. The roller 36 can reduce the resistance and wear of the lateral push of the insertion rod 31 on the fixing block 33 when it moves vertically downward by rotating.

[0031] When installing the hydraulic valve body 1, insert the rod 31 into the insertion hole 3 of the protective box 2. As the rod 31 moves vertically downward, the roller 36 at the bottom of the rod 31 will abut against the guide slope 35 of the fixing block 33. At this time, as the rod 31 continues to move downward, the fixing block 33 will be pressed laterally into the slide groove 32 under the guide slope 35, so that the fixing block 33 will not obstruct the downward movement of the rod 31. When the rod 31 continues to move downward, its own fixing hole 37 will be aligned with the fixing block 33. At this time, under the elastic force of the return spring 34, one end of the fixing block 33 will automatically and quickly insert into the fixing hole 37 of the rod 31, thereby completing the installation of the hydraulic valve body 1.

[0032] Reference Figure 2-4 Two sets of pull ropes 4 are fixed at one end of the two sets of fixing blocks 33 away from the insertion rod 31 and extend through and to the outside of the protective box 2. A pressure ring 41 is fixed between the bottom ends of the two sets of pull ropes 4. The pressure ring 41 is slidably disposed on the outer wall of the protective box 2. Two sets of guide wheels 42 are rotatably provided on both sides of the protective box 2 to guide the pull ropes 4. The two sets of pull ropes 4 can connect the two sets of fixing blocks 33 and the pressure ring 41. The protective box 2 can display the pressure ring 41 on the outside, so that the pressure ring 41 can only move up and down. The guide wheels 42 can guide and limit the pull ropes 4 to reduce the resistance and wear when the pull ropes 4 move.

[0033] When it is necessary to disassemble the hydraulic valve body 1, the operator can use one hand to press down the pressure ring 41, thereby driving the two sets of pull ropes 4 to move down. At this time, under the guidance of the guide wheel 42 and in conjunction with the connection of the pull ropes 4, the two sets of fixing blocks 33 can be pulled away from the fixing holes 37 in the insert rod 31 at the same time, thereby detaching the hydraulic valve body 1 from the fixing. Then the operator can use the other hand to take the hydraulic valve body 1 out of the protective box 2 for inspection and maintenance, thereby completing the disassembly process of the hydraulic valve body 1.

[0034] The implementation principle of a hydraulic valve for a bending machine according to an embodiment of this application is as follows:

[0035] When in use, the protective box 2 can protect and fix the hydraulic valve body 1.

[0036] When installing the hydraulic valve body 1, the operator can first remove the plug 23, and then insert the rod 31 vertically into the insertion hole 3 of the protective box 2. As the rod 31 moves vertically downward, the roller 36 at the bottom of the rod 31 will abut against the guide slope 35 of the fixing block 33. At this time, as the rod 31 continues to move downward, the fixing block 33 will be pressed horizontally into the slide groove 32 under the guide slope 35, so that the fixing block 33 will not obstruct the downward movement of the rod 31. When the rod 31 continues to move downward, its own fixing hole 37 will be aligned with the fixing block 33. At this time, under the elastic force of the return spring 34, one end of the fixing block 33 will automatically and quickly insert into the fixing hole 37 of the rod 31. Then, the plug 23 is inserted into the air pipe 22, thereby completing the installation of the hydraulic valve body 1.

[0037] When it is necessary to disassemble the hydraulic valve body 1, the operator can first remove the plug 23, and then press down on the pressure ring 41 with one hand, thereby driving the two sets of pull ropes 4 to move down. At this time, under the guidance of the guide wheel 42 and in conjunction with the connection of the pull ropes 4, the two sets of fixing blocks 33 can be pulled away from the fixing hole 37 in the insert rod 31 at the same time, so that the hydraulic valve body 1 is detached from the fixing. Then the operator can use the other hand to take the hydraulic valve body 1 out of the protective box 2 for inspection and maintenance, thereby completing the disassembly process of the hydraulic valve body 1.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydraulic valve for a bending machine, comprising a hydraulic valve body (1), a protective box (2) disposed outside the hydraulic valve body (1), and a connecting mechanism disposed between the hydraulic valve body (1) and the protective box (2), characterized in that: The connecting mechanism includes two sets of insert rods (31) fixed on both sides of the hydraulic valve body (1) and inserted into the top of the protective box (2), two sets of sliding grooves (32) opened on both sides of the inner wall of the protective box (2), and a fixing block (33) slidably disposed in the sliding groove (32) of the protective box (2) and inserted into the insert rod (31) at one end. The protective box (2) has a return spring (34) fixed in the groove (32) for pushing the fixing block (33) toward the insertion rod (31). The top of one end of the fixing block (33) has a guide slope (35) for pressing the fixing block (33) laterally into the groove (32) when the insertion rod (31) moves vertically downward. The bottom of the insertion rod (31) near the fixing block (33) has a roller (36) that rotates.

2. The hydraulic valve for a bending machine according to claim 1, characterized in that: The bottom of the protective box (2) has several through holes (21) through which the hydraulic valve body (1) pipeline passes.

3. A hydraulic valve for a bending machine according to claim 1, characterized in that: The bottom of the inner wall of the protective box (2) is fixedly provided with an air guide pipe (22), and a plug (23) located outside the protective box (2) is movably provided at one end of the air guide pipe (22).

4. A hydraulic valve for a bending machine according to claim 1, characterized in that: The protective box (2) has two sets of insertion holes (3) on both sides of the top. The insertion rod (31) is inserted into the insertion hole (3) of the protective box (2). The sliding groove (32) is opened on one side of the insertion hole (3) of the protective box (2).

5. A hydraulic valve for a bending machine according to claim 1, characterized in that: The insertion rod (31) has a fixing hole (37) on the side away from the hydraulic valve body (1), and one end of the fixing block (33) is inserted into the fixing hole (37) of the insertion rod (31).

6. A hydraulic valve for a bending machine according to claim 1, characterized in that: Two sets of pull ropes (4) are fixed at the ends of the two sets of fixing blocks (33) away from the insertion rod (31) and extend through and to the outside of the protective box (2).

7. A hydraulic valve for a bending machine according to claim 6, characterized in that: A pressure ring (41) is fixed between the bottom ends of the two sets of pull ropes (4), and the pressure ring (41) is slidably disposed on the outer wall of the matching protective box (2).

8. A hydraulic valve for a bending machine according to claim 7, characterized in that: The protective box (2) is provided with two sets of guide wheels (42) on both sides for guiding the pull rope (4).

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