Coupling valve for hydraulic clamp

Abstract

The connecting valve for the hydraulic clamp comprises a connecting valve body, an oil inlet pipeline and an oil return pipeline are arranged in the connecting valve body, and the oil inlet pipeline comprises an oil inlet input pipeline, an oil inlet built-in output pipeline and an oil inlet external output pipeline which are communicated with one another. The connecting valve body is provided with an oil inlet path connector hole, an oil inlet path built-in oil outlet hole and an oil inlet path external oil outlet hole which correspond to the connecting valve body, and the oil return pipeline comprises an oil return output pipeline, an oil return built-in input pipeline and an oil return external input pipeline which are communicated with one another. The connecting valve body is provided with an oil return path joint hole, an oil return path built-in oil outlet hole and an oil return path external oil outlet hole which correspond to the oil return path joint hole, the oil inlet path joint hole is provided with an oil inlet path joint, the oil return path joint hole is provided with an oil return path joint, and the oil inlet path built-in oil outlet hole and the oil return path built-in oil outlet hole are respectively provided with a sealing ring. Detachable plugs are installed on the oil inlet path external oil outlet hole and the oil return path external oil outlet hole, a pressure gauge communicated with an oil inlet input pipeline is installed on the top of the connecting valve body, and the connecting valve is reasonable in structure and high in universality, saves use space and reduces purchase and use cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a coupling valve, specifically relates to a coupling valve for hydraulic fixture. BACKGROUND

[0002] Hydraulic fixture is by each hydraulic element, is positioned and is clamped to the fixture of workpiece through hydraulic oil control, is widely used in mechanical processing etc. scene. In order to enter into hydraulic fixture, hydraulic pipeline is generally connected with hydraulic fixture through coupling valve.

[0003] Generally, in order to connect with hydraulic pipeline conveniently, in order to frequently plug and unplug, quick change type coupling valve with quick change connector is adopted, but in the working condition of machine tool self hydraulic station and hydraulic pipeline, hydraulic pipeline and hydraulic fixture are connected and do not need to be disassembled, rely on machine tool to control hydraulic fixture, so the conventional quick change type coupling valve is not suitable for the above working condition.

[0004] Common coupling valve generally includes built-in oil way type and pipe type, the former corresponds to the hydraulic fixture of built-in oil way, the latter corresponds to the hydraulic fixture needing external oil way, and the two are not universal.

[0005] The coupling valve needs to be separately provided with a pressure gauge on the hydraulic fixture to monitor the pressure of the entire pressure system, which occupies a large space. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model aims at providing a coupling valve for hydraulic fixture, which can solve the technical problems of the existing coupling valve not being universal for different oil way setting hydraulic fixtures, frequent plugging and occupying a large space.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme to realize it:

[0008] A coupling valve for hydraulic fixture, comprising a cubic coupling valve body, characterized in that an oil inlet pipeline and an oil return pipeline are formed in the coupling valve body.

[0009] The oil inlet pipeline comprises an oil inlet input pipeline, an oil inlet built-in output pipeline and an oil inlet external output pipeline, and the outer wall of the coupling valve body is provided with an oil inlet joint hole, an oil inlet built-in oil outlet hole and an oil inlet external oil outlet hole. One end of the oil inlet input pipeline, the oil inlet built-in output pipeline and the oil inlet external output pipeline is communicated with each other, the other end of the oil inlet input pipeline is communicated with the oil inlet joint hole, the other end of the oil inlet built-in output pipeline is communicated with the oil inlet built-in oil outlet hole, and the oil inlet external output pipeline is communicated with the oil inlet external oil outlet hole.

[0010] The oil return pipeline comprises an oil return output pipeline, an oil return built-in input pipeline and an oil return external input pipeline, the outer wall of the coupling valve body is provided with an oil return joint hole, an oil return built-in oil outlet hole and an oil return external oil outlet hole, one end of the oil return output pipeline, the oil return built-in input pipeline and the oil return external input pipeline is communicated with each other, the other end of the oil return output pipeline is communicated with the oil return joint hole, the other end of the oil return built-in input pipeline is communicated with the oil return built-in oil outlet hole, and the oil return external input pipeline is communicated with the oil return external oil outlet hole.

[0011] The pressure gauge is installed on the top of the coupling valve body and communicated with the oil inlet input pipeline.

[0012] The utility model discloses further include the following technical features:

[0013] The oil inlet joint hole and the oil return joint hole are arranged on the front side wall of the coupling valve body, the oil inlet joint hole is provided with an oil inlet joint, and the oil return joint hole is provided with an oil return joint.

[0014] The oil inlet built-in oil outlet hole and the oil return built-in oil outlet hole are arranged on the bottom of the coupling valve body, and the oil inlet built-in oil outlet hole and the oil return built-in oil outlet hole are provided with a sealing ring.

[0015] The coupling valve body is vertically provided with a through hole penetrating the coupling valve body, and the through hole is provided with a fixing bolt.

[0016] The oil inlet external output pipeline and the oil return external input pipeline are two, one end of the two oil inlet external output pipelines is communicated with the oil inlet input pipeline, the other end of the two oil inlet external output pipelines corresponds to an oil inlet external oil outlet hole, and the two oil inlet external oil outlet holes are arranged on the lateral side wall and the rear side wall of the coupling valve body; one end of the two oil return external input pipelines is communicated with the oil return output pipeline, the other end of the two oil return external input pipelines corresponds to an oil return external oil outlet hole, and the two oil return external oil outlet holes are arranged on the lateral side wall and the rear side wall of the coupling valve body.

[0017] The oil inlet external oil outlet hole and the oil return external oil outlet hole are detachably provided with a screw plug.

[0018] Compared with the prior art, the utility model has the following technical effects:

[0019] The utility model discloses a built-in type oil outlet oil way and external type oil outlet oil way are designed simultaneously on the connecting valve, can be used for oil way built-in type hydraulic clamp and oil way external type hydraulic clamp, for different types of hydraulic clamp, only need to connect corresponding oil way can use, need not again single configuration corresponding type connecting valve, reduced purchase and use cost, sealing washer and screw plug guarantee the sealing property of whole connecting valve in use, integrate installation pressure gauge on the oil inlet of connecting valve for reading the pressure of whole hydraulic system, maximum limit saved use space. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model.

[0021] Figure 2 It is the bottom view schematic diagram of the utility model.

[0022] Figure 3 It is the structure schematic diagram of connecting valve body of the utility model Figure 1 .

[0023] Figure 4 It is the structure schematic diagram of connecting valve body of the utility model Figure 2 .

[0024] Figure 5 It is the front view of connecting valve body of the utility model.

[0025] Figure 6 It is the A-A section view of Figure 5 .

[0026] Figure 7 It is the B-B section view of Figure 5 .

[0027] Figure 8 It is the C-C section view of Figure 5 .

[0028] Figure 9 It is the connecting mode and oil way schematic diagram of the utility model for oil way built-in type hydraulic clamp.

[0029] Figure 10 It is the connecting mode and oil way schematic diagram of the utility model for oil way external type hydraulic clamp.

[0030] The meaning of each reference sign in the drawing is as follows:

[0031] 1, connecting valve body, 2, oil inlet pipeline, 3, oil return pipeline, 4, pressure gauge, 5, sealing washer, 6, fixed bolt, 7, screw plug, 8, through -hole, 9, pressure gauge connecting hole;

[0032] 21. Oil inlet input pipe, 22. Internal oil inlet output pipe, 23. External oil inlet output pipe, 24. Oil inlet connector hole, 25. Internal oil outlet hole, 26. External oil outlet hole, 27. Oil inlet connector;

[0033] 31. Return oil output pipe, 32. Return oil internal input pipe, 33. Return oil external input pipe, 34. Return oil circuit joint hole, 35. Return oil circuit internal oil outlet hole, 36. Return oil circuit external oil outlet hole, 37. Return oil circuit joint.

[0034] The specific contents of the present invention are further explained in detail below with reference to the embodiments. DETAILED DESCRIPTION

[0035] In accordance with the above technical solution, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0036] In the present invention, unless otherwise specified, directional words such as "upper", "lower", "left", "right", etc. are generally defined based on the drawings in the corresponding accompanying drawings, and "inside" and "outside" refer to the inside and outside of the outline of the corresponding component.

[0037] Example:

[0038] This embodiment provides a coupling valve for a hydraulic clamp, such as Figures 1 to 10 As shown, it comprises a cubic connecting valve body 1, in which an oil inlet pipeline 2 and an oil return pipeline 3 are opened;

[0039] The oil inlet pipeline includes an oil inlet input pipe 21, an internal oil inlet output pipe 22, and an external oil inlet output pipe 23. An oil inlet joint hole 24, an internal oil inlet outlet hole 25, and an external oil inlet outlet hole 26 are formed on the outer wall of the connecting valve body 1. One ends of the oil inlet input pipe 21, the internal oil inlet output pipe 22, and the external oil inlet output pipe 23 are connected to each other, the other end of the oil inlet pipe 21 is connected to the oil inlet joint hole 24, the other end of the internal oil inlet output pipe 22 is connected to the internal oil inlet outlet hole 25, and the external oil inlet output pipe 23 is connected to the external oil inlet outlet hole 26.

[0040] The oil return pipeline comprises an oil return output pipeline 31, an oil return built-in input pipeline 32 and an oil return external input pipeline 33, the oil return pipeline joint hole 34, the oil return built-in oil outlet hole 35 and the oil return external oil outlet hole 36 are arranged on the outer wall of the coupling valve body 1, one end of the oil return output pipeline 31, the oil return built-in input pipeline 32 and the oil return external input pipeline 33 are communicated with each other, the other end of the oil return output pipeline 31 is communicated with the oil return pipeline joint hole 34, the other end of the oil return built-in input pipeline 32 is communicated with the oil return built-in oil outlet hole 35, and the oil return external input pipeline 33 is communicated with the oil return external oil outlet hole 36.

[0041] The pressure gauge 4 is arranged on the top of the coupling valve body 1 and communicated with the oil inlet input pipeline 21.

[0042] In the embodiment, the oil inlet input pipeline 21 of the coupling valve is communicated with the oil inlet pipeline of the hydraulic station through the oil inlet joint hole 24, the oil return pipeline of the hydraulic station is communicated with the oil return output pipeline 31 of the coupling valve through the oil return joint hole 34, the oil inlet built-in output pipeline 22 and the oil return built-in input pipeline 32 of the coupling valve are respectively communicated with the oil inlet hole and the oil return hole of the built-in oil pipeline hydraulic clamp through the oil inlet built-in oil outlet hole 25 and the oil return built-in oil outlet hole 35, and the oil inlet external output pipeline 23 and the oil return external input pipeline 33 of the coupling valve are respectively communicated with the oil inlet connecting pipe and the oil return connecting pipe of the external oil pipeline hydraulic clamp, the coupling valve can be connected with different output pipelines according to different types of hydraulic clamps, forms a complete set of hydraulic system, and has stronger applicability, meanwhile, the pressure gauge connection hole 9 is arranged on the top of the coupling valve body 1, the pressure gauge 4 is integrated and arranged on the oil inlet pipeline of the coupling valve through the pressure gauge connection hole 9, and the pressure of the whole hydraulic system can be read, thereby saving space to the maximum extent.

[0043] As a preferred scheme of the embodiment, the oil inlet joint hole 24 and the oil return joint hole 34 are arranged on the front side wall of the coupling valve body 1, the oil inlet joint 27 is arranged on the oil inlet joint hole 24, the oil return joint 37 is arranged on the oil return joint hole 34, and the oil inlet joint 27 and the oil return joint 37 are respectively communicated with the oil inlet pipeline and the oil return pipeline of the hydraulic station, so that the oil pipeline connection is more stable.

[0044] As a preferred form of the present embodiment, the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35 are arranged at the bottom of the coupling valve body 1, and a sealing ring 5 is arranged on each of the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35. In use, the coupling valve is installed on the upper surface of a hydraulic clamp, the oil inlet hole and the oil return hole of the oil channel built-in hydraulic clamp are arranged on the top of the hydraulic clamp, the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35 are respectively connected to the oil inlet hole and the oil return hole of the oil channel built-in hydraulic clamp, and the sealing ring 5 ensures the sealing of the entire hydraulic system and prevents hydraulic oil from leaking. When the coupling valve is used for an oil channel external piping type hydraulic clamp, the top of the hydraulic clamp can be sealed, and the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35 can improve the air tightness of the sealing.

[0045] Further, a through hole 8 is arranged vertically on the coupling valve body 1 and penetrates the coupling valve body 1, and a fixing bolt 6 is arranged in the through hole 8. The coupling valve is fixedly installed on the top of the hydraulic clamp through the fixing bolt 6.

[0046] As a preferred form of the present embodiment, the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35 are arranged at the bottom of the coupling valve body 1, and a sealing ring 5 is arranged on each of the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35. In use, the coupling valve is installed on the upper surface of a hydraulic clamp, the oil inlet hole and the oil return hole of the oil channel built-in hydraulic clamp are arranged on the top of the hydraulic clamp, the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35 are respectively connected to the oil inlet hole and the oil return hole of the oil channel built-in hydraulic clamp, and the sealing ring 5 ensures the sealing of the entire hydraulic system and prevents hydraulic oil from leaking. When the coupling valve is used for an oil channel external piping type hydraulic clamp, the top of the hydraulic clamp can be sealed, and the oil inlet channel built-in oil outlet hole 25 and the oil return channel built-in oil outlet hole 35 can improve the air tightness of the sealing.

[0047] Further, a through hole 8 is arranged vertically on the coupling valve body 1 and penetrates the coupling valve body 1, and a fixing bolt 6 is arranged in the through hole 8. The coupling valve is fixedly installed on the top of the hydraulic clamp through the fixing bolt 6.

[0048] In actual operation, the coupling valve of the present embodiment has the following advantages:

[0049] When the present coupling valve is applied to the hydraulic clamp of the oil line external connection pipe type, first, all the oil inlet line external outlet holes 26 and the oil return line external outlet holes 36 are plugged with the screw plugs 7, then the oil inlet line built-in outlet hole 25 is connected with the oil inlet hole of the hydraulic clamp, and the oil return line built-in outlet hole 35 is connected with the oil return hole of the hydraulic clamp, and then the whole coupling valve is fixedly installed on the top of the hydraulic clamp through the fixing bolt 6, so that the lower surface of the coupling valve is in close contact with the upper surface of the hydraulic clamp, and then the oil inlet line pipeline of the hydraulic station is connected with the oil inlet joint 27 of the coupling valve, and the oil return line pipeline of the hydraulic station is connected with the oil return joint 37 of the coupling valve, after the installation is completed, the hydraulic station is started, the hydraulic oil enters into the oil inlet input pipeline 21 through the oil inlet line pipeline of the hydraulic station, then enters into the oil inlet built-in output pipeline 22 through the oil inlet input pipeline 21, enters into the hydraulic clamp through the connected oil inlet line built-in outlet hole 25 and the oil inlet hole of the hydraulic clamp, then enters into the oil return built-in input pipeline 32 through the oil outlet hole of the hydraulic clamp and the oil return line built-in outlet hole 35, and finally returns to the hydraulic station through the oil return output pipeline 31 and the oil return line pipeline of the hydraulic station.

[0050] When the present coupling valve is applied to the hydraulic clamp of the oil line external connection pipe type, first, all the oil inlet line external outlet holes 26 and the oil return line external outlet holes 36 are plugged with the screw plugs 7, then the oil inlet line built-in outlet hole 25 is connected with the oil inlet hole of the hydraulic clamp, and the oil return line built-in outlet hole 35 is connected with the oil return hole of the hydraulic clamp, and then the whole coupling valve is fixedly installed on the top of the hydraulic clamp through the fixing bolt 6, so that the lower surface of the coupling valve is in close contact with the upper surface of the hydraulic clamp, and then the oil inlet line pipeline of the hydraulic station is connected with the oil inlet joint 27 of the coupling valve, and the oil return line pipeline of the hydraulic station is connected with the oil return joint 37 of the coupling valve, after the installation is completed, the hydraulic station is started, the hydraulic oil enters into the oil inlet input pipeline 21 through the oil inlet line pipeline of the hydraulic station, then enters into the oil inlet built-in output pipeline 22 through the oil inlet input pipeline 21, enters into the hydraulic clamp through the connected oil inlet line built-in outlet hole 25 and the oil inlet hole of the hydraulic clamp, and then enters into the oil return built-in input pipeline 32 through the oil outlet hole of the hydraulic clamp and the oil return line built-in outlet hole 35, and finally returns to the hydraulic station through the oil return output pipeline 31 and the oil return line pipeline of the hydraulic station.

[0051] In work, the pressure gauge 4 can read the pressure of the whole pressure system.

Claims

1. A coupling valve for a hydraulic clamp, comprising a cubic coupling valve body (1), characterized in that: An oil inlet pipeline (2) and an oil return pipeline (3) are provided in the connecting valve body (1); The oil inlet pipeline comprises an oil inlet input pipeline (21), an internal oil inlet output pipeline (22) and an external oil inlet output pipeline (23); an oil inlet joint hole (24), an internal oil inlet outlet hole (25) and an external oil inlet outlet hole (26) are provided on the outer wall of the connecting valve body (1); one end of the oil inlet input pipeline (21), the internal oil inlet output pipeline (22) and the external oil inlet output pipeline (23) are connected to each other; the other end of the oil inlet input pipeline (21) is connected to the oil inlet joint hole (24); the other end of the internal oil inlet output pipeline (22) is connected to the internal oil inlet outlet hole (25); and the external oil inlet output pipeline (23) is connected to the external oil inlet outlet hole (26); The oil return pipeline comprises an oil return output pipeline (31), an internal oil return input pipeline (32) and an external oil return input pipeline (33); an oil return circuit joint hole (34), an internal oil return circuit oil outlet hole (35) and an external oil return circuit oil outlet hole (36) are provided on the outer wall of the connecting valve body (1); one end of the oil return output pipeline (31), the internal oil return input pipeline (32) and the external oil return input pipeline (33) are connected to each other; the other end of the oil return output pipeline (31) is connected to the oil return circuit joint hole (34); the other end of the internal oil return input pipeline (32) is connected to the internal oil return circuit oil outlet hole (35); and the external oil return input pipeline (33) is connected to the external oil return circuit oil outlet hole (36); A pressure gauge (4) is installed on the top of the connecting valve body (1), and the pressure gauge (4) is connected to the oil inlet pipe (21).

2. The coupling valve for a hydraulic clamp according to claim 1, wherein: The oil inlet joint hole (24) and the oil return joint hole (34) are formed on the front side wall of the connecting valve body (1); an oil inlet joint (27) is mounted on the oil inlet joint hole (24), and an oil return joint (37) is mounted on the oil return joint hole (34).

3. The coupling valve for a hydraulic clamp according to claim 1, wherein: The oil inlet built-in oil outlet hole (25) and the oil return built-in oil outlet hole (35) are opened at the bottom of the connecting valve body (1), and sealing rings (5) are installed on the oil inlet built-in oil outlet hole (25) and the oil return built-in oil outlet hole (35).

4. The coupling valve for a hydraulic clamp according to claim 1, wherein: A through hole (8) penetrating the connecting valve body (1) is vertically provided on the connecting valve body (1), and a fixing bolt (6) is installed in the through hole (8).

5. The coupling valve for a hydraulic clamp according to claim 1, wherein: There are two of the oil inlet external output pipe (23) and the oil return external input pipe (33), one end of each of the two oil inlet external output pipes (23) is connected to the oil inlet input pipe (21), and the other end of each of the two oil inlet external output pipes (23) corresponds to an oil inlet external oil outlet hole (26), and the two oil inlet external oil outlet holes (26) are respectively provided on the lateral side wall and the rear side wall of the connecting valve body (1); One end of each of the two oil return external input pipes (33) is connected to the oil return output pipe (31), and the other end of each of the two oil return external input pipes (33) corresponds to an oil return external oil outlet hole (36). The two oil return external oil outlet holes (36) are respectively arranged on the lateral side wall and the rear side wall of the connecting valve body (1).

6. The coupling valve for a hydraulic clamp according to claim 1, wherein: The oil inlet circuit external oil outlet hole (26) and the oil return circuit external oil outlet hole (36) are both detachably mounted with screw plugs (7).

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