Electro-hydraulic control reversing valve one-way valve assembly tooling

Abstract

The utility model discloses a kind of electro-hydraulic control reversing valve check valve assembly tool, it is related to hydraulic valve manufacturing technical field.The application includes precision positioning module and guide press fitting module, precision positioning module is detachably connected with guide press fitting module, precision positioning module includes at least two live head pin, for with the reference hole on the check valve body cooperation to realize tooling accurate positioning;Guide press fitting module includes guide column, transmission rod and force handle, the bottom of guide column is provided with a plurality of mounting holes, mounting hole is compatible with live head pin, the top of guide column is fixedly connected with one end of transmission rod, the other end of transmission rod is movably connected with force handle.It is fundamentally avoided that its accurate guide and positioning design installs deflection, prevents part damage, greatly reduces scrap rate, simple operation, clamping is fast, need not repeatedly adjust, make single person assembly efficiency improve several times.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve manufacturing technology, specifically to an assembly fixture for an electro-hydraulic directional valve check valve. Background Technology

[0002] In the field of hydraulic transmission and control, electro-hydraulic directional valves, as core components for achieving precise fluid direction switching, directly determine the operational stability and response accuracy of end products such as engineering machinery and industrial automation equipment. Among these, the electro-hydraulic directional valve, as an important hydraulic control component, requires the installation of a critical component—a check valve—during its assembly. This check valve is characterized by its compact structure, limited installation space, and high requirements for coaxiality and pressurization force. Currently, the industry commonly uses manual direct installation or assisted assembly with general-purpose tools (such as ordinary presses, simple guide sleeves, etc.), which presents the following prominent problems:

[0003] 1. Low assembly efficiency: Manual operation is slow and labor-intensive, making it difficult to adapt to the pace of modern mass production and restricting overall production efficiency.

[0004] 2. Installation quality is difficult to guarantee: Due to the lack of an effective guiding and positioning mechanism, misalignment is prone to occur during the press-fitting process, resulting in valve core jamming, sealing ring cutting or deformation, and a high product scrap rate;

[0005] 3. Poor consistency: The assembly quality relies excessively on the technical skills and experience of the operators. The quality of products assembled by different personnel or by the same personnel at different times fluctuates greatly, making it impossible to guarantee the consistency and reliability of batch products.

[0006] 4. Limited applicability of tools: Existing general-purpose tooling is often simple in structure and lacks precision, which cannot meet the special requirements of this type of check valve for high-precision press fitting, especially in achieving accurate centering and controllable press fitting force in confined spaces.

[0007] Therefore, there is an urgent need to develop a dedicated assembly tool to solve the above-mentioned technical bottlenecks and achieve efficient, high-precision, and highly consistent one-way valve assembly operations. Utility Model Content

[0008] Therefore, this utility model provides an assembly tooling for an electro-hydraulic directional valve check valve to solve the problems of low installation efficiency, poor product quality consistency and stability in the prior art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An assembly fixture for an electro-hydraulic directional valve check valve includes: a precision positioning module and a guide pressing module, wherein the precision positioning module and the guide pressing module are detachably connected.

[0011] The precision positioning module includes at least two live pins for engaging with reference holes on the one-way valve body to achieve precise tooling positioning;

[0012] The guide pressing module includes a guide post, a transmission rod, and a force application handle. The bottom of the guide post is provided with multiple mounting holes, which are adapted to the movable pin. The top of the guide post is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is movably connected to the force application handle.

[0013] Furthermore, the guide post and the transmission rod are integrally formed and coaxially designed.

[0014] Furthermore, the mounting holes are circular and there are six of them, which are arranged in a circular array.

[0015] Furthermore, the diameter of the ring array arrangement is 6.2±0.1mm.

[0016] Furthermore, a through hole is provided at the end of the transmission rod away from the guide post, and the force application handle passes through the through hole.

[0017] Furthermore, the diameter of the circular hole in the movable pin is 1.8 mm.

[0018] Furthermore, the guide post and the transmission rod are made of tool steel.

[0019] This utility model has at least the following beneficial effects:

[0020] 1. By setting up a precision positioning module, the high-precision fit between at least two live pins and the valve body reference hole ensures accurate positioning between the tooling and the workpiece, effectively eliminating the skew phenomenon during the press-fitting process, avoiding problems such as valve core jamming and seal ring damage, significantly reducing the product scrap rate, and ensuring the sealing performance and operational reliability of the hydraulic valve.

[0021] 2. The structural feature of the guide press-fit module, which combines the transmission rod and the force application handle, makes operation labor-saving and the actions smooth, significantly reducing the labor intensity of operators, and is especially suitable for batch continuous operation scenarios. This tooling is simple to operate, clamps quickly, and does not require repeated adjustments, increasing the assembly efficiency of a single person several times, effectively improving production efficiency.

[0022] 3. This tooling eliminates the over-reliance on the individual skills and experience of operators, allowing even novices to quickly master and complete high-quality assembly, ensuring the consistency and stability of products assembled by different batches and personnel.

[0023] 4. The precision positioning module and the guide pressing module are detachably connected, which not only makes it easy to flexibly change the position of the positioning components according to different valve body structures, but also facilitates daily maintenance and component replacement. Attached Figure Description

[0024] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0026] Figure 1 A first-view structural schematic diagram of an electro-hydraulic directional valve check valve assembly fixture provided in this embodiment of the present invention;

[0027] Figure 2 A second-view structural schematic diagram of an electro-hydraulic directional valve check valve assembly fixture provided in this embodiment of the present invention;

[0028] Figure 3 A bottom view of the assembly fixture for an electro-hydraulic directional valve check valve provided in this embodiment of the present invention;

[0029] Figure 4 A third-view structural schematic diagram of an electro-hydraulic directional valve check valve assembly fixture provided for an embodiment of this utility model;

[0030] Figure 5 This is a structural diagram of the electro-hydraulic directional valve provided in the embodiment of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Live pin; 2. Guide post; 3. Transmission rod; 4. Force application handle; 5. Mounting hole; 6. Through hole; 7. Reference hole. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0034] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For schemes with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for schemes with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0035] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0036] like Figures 1 to 5 As shown, this utility model discloses an electro-hydraulic directional valve check valve assembly tooling, which includes: a precision positioning module and a guide pressing module. The precision positioning module and the guide pressing module are detachably connected. The precision positioning module includes at least two live pins 1, which are used to cooperate with the reference holes 7 on the check valve body to achieve precise positioning of the tooling.

[0037] The guide pressing module includes a guide post 2, a transmission rod 3, and a force application handle 4. The guide post 2 and the transmission rod 3 are integrally formed and coaxially designed. This structural design avoids the guide post 2 and the transmission rod 3 from shifting due to loose connection, and ensures that the pressing force is transmitted along the axis of the one-way valve, preventing the one-way valve from being damaged due to uneven force. The bottom of the guide post 2 is provided with multiple mounting holes 5. Preferably, the mounting holes 5 are circular holes and there are six of them. The six mounting holes 5 are arranged in a ring array. The mounting holes 5 are adapted to the live pin 1. The top of the guide post 2 is fixedly connected to one end of the transmission rod 3, and the other end of the transmission rod 3 is movably connected to the force application handle 4.

[0038] The working principle of this embodiment is as follows:

[0039] First, insert the two movable pins from the precision positioning module into the mounting holes 5 at the bottom of the guide post 2 in the guide pressing module to complete the initial assembly of the two modules. Then, move the assembled fixture to the valve body of the electro-hydraulic directional valve, align the movable pin 1 with the reference hole 7 on the valve body and insert it to achieve precise positioning and fixation of the fixture. Then, rotate the force application handle 4 clockwise, which will drive the transmission rod 3 and the guide post 2 to move downward, so that the bottom end of the guide post 2 presses against the check valve and presses it to the specified depth in the valve body hole, completing the installation. Finally, hold the force application handle 4 and pull out the fixture. It should be noted that the installation position of the movable pin 1 in the mounting hole 5 can be flexibly selected. Two movable pins 1 distributed at 180° can be used, or three movable pins 1 distributed at 120° can be used, or it can be adjusted to any other angle according to actual needs to adapt to the distribution of the reference hole 7 of different valve bodies. In this embodiment, the detachable connection design facilitates tooling disassembly, transportation, and maintenance. The fit between the live pin 1 and the mounting hole 5 ensures accurate positioning and avoids press-fit offset.

[0040] In a further embodiment, the circular array arrangement has a positioning diameter of 6.2±0.1mm, the diameter of the circular hole of the live pin 1 is 1.8mm, and the diameter of the circular hole of the reference hole 7 is 2.2mm. The live pin 1 can be smoothly inserted into the reference hole 7 with a reasonable fitting clearance. In this embodiment, the precise positioning diameter of 6.2±0.1mm ensures that the mounting hole 5 and the reference hole 7 of the valve body are perfectly matched. The flexible angle adjustment function of the live pin 1 is adapted to valve bodies with reference holes 7 of different distribution angles. The combination of the two avoids the problem of the reference hole 7 not being able to align with the mounting hole 5 due to size or angle deviations, greatly improving the tooling versatility. At the same time, the high-precision size control and angle adaptation further ensure the coaxiality of the check valve after press-fitting, which meets the product design standards.

[0041] In a further embodiment, a through hole 6 is provided at the end of the transmission rod 3 away from the guide post 2, and the force application handle 4 passes through the through hole 6. In use, the force application handle 4 is first passed through the through hole 6 at the end of the transmission rod 3. During pressing, the two ends of the force application handle 4 are held, and the rod 3 is rotated around the through hole 6 to move it downwards. The cooperation between the through hole 6 and the force application handle 4 makes the installation and removal of the force application handle 4 more convenient.

[0042] In a further embodiment, the guide post 2 and the transmission rod 3 are made of tool steel. In this embodiment, tool steel has high strength and high wear resistance, and can withstand the impact and friction during long-term pressing, thereby extending the service life of the tooling, reducing the frequency of tooling component replacement, and reducing production costs.

[0043] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0045] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A tooling for assembling an electro-hydraulic directional valve check valve, characterized in that, include: A precision positioning module and a guide pressing module are provided, wherein the precision positioning module and the guide pressing module are detachably connected. The precision positioning module includes at least two live pins (1) for engaging with reference holes on the one-way valve body to achieve precise positioning of the tooling; The guide pressing module includes a guide post (2), a transmission rod (3) and a force application handle (4). The bottom of the guide post (2) is provided with multiple mounting holes (5). The mounting holes (5) are adapted to the live pin (1). The top of the guide post (2) is fixedly connected to one end of the transmission rod (3), and the other end of the transmission rod (3) is movably connected to the force application handle (4).

2. The electro-hydraulic directional valve check valve assembly fixture according to claim 1, characterized in that, The guide post (2) and the transmission rod (3) are integrally formed and designed with the same axis.

3. The assembly fixture for the electro-hydraulic directional valve check valve according to claim 1, characterized in that, The mounting holes (5) are circular holes and there are six of them. The six mounting holes (5) are arranged in a ring array.

4. The assembly fixture for the electro-hydraulic directional valve check valve according to claim 3, characterized in that, The diameter of the circular array arrangement is 6.2 ± 0.1 mm.

5. The assembly fixture for the electro-hydraulic directional valve check valve according to claim 1, characterized in that, The transmission rod (3) has a through hole (6) at one end away from the guide post (2), and the force application handle (4) passes through the through hole (6).

6. The electro-hydraulic directional valve check valve assembly fixture according to claim 1, characterized in that, The diameter of the round hole in the live pin (1) is 1.8 mm.

7. The assembly fixture for the electro-hydraulic directional valve check valve according to claim 2, characterized in that, The guide post (2) and the transmission rod (3) are made of tool steel.

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