Automatic press-fitting equipment for elastic pin of hydraulic valve

Abstract

The invention relates to the technical field of hydraulic valves, in particular to hydraulic valve elastic pin automatic press-fitting equipment which comprises a workbench, and two protective doors are hinged to the inner wall of the workbench through pin shafts. A conveying assembly used for conveying the hydraulic valve and the elastic pin, a positioning assembly used for limiting and fixing the hydraulic valve and the elastic pin and a press fitting assembly used for press fitting of the hydraulic valve and the elastic pin are arranged outside the workbench. The hydraulic valve and the elastic pin installed in the hydraulic valve elastic pin reserved hole are continuously conveyed through the conveying belt, the hydraulic valve and the elastic pin can be guided in the conveying process, and then the hydraulic valve and the elastic pin are limited and fixed after it is detected that the hydraulic valve and the elastic pin reach the designated position, so that it is ensured that the elastic pin can be accurately pressed into the hydraulic valve, and the working efficiency is improved. And meanwhile, an automatic control system is adopted in the operation process, only the hydraulic valves and the elastic pins need to be manually placed in the whole working process, other procedures are automatically completed, the labor cost can be saved, and the working efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic valves, in particular to automatic press-fitting equipment for elastic pins of hydraulic valves. Background Art

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressure oil of a pressure-regulating valve and is usually used in combination with an electromagnetic pressure-regulating valve. It can be used to remotely control the on / off of oil, gas, and water pipeline systems in hydropower stations. It is often used for clamping, controlling, lubricating, and other oil circuits. It is divided into direct-acting and pilot-operated types, with pilot-operated types being the most common. The one that controls pressure is called a pressure control valve, the one that controls flow is called a flow control valve, and the one that controls on / off and flow direction is called a directional control valve.

[0003] With the continuous expansion of the application of hydraulic technology in the field of mechanical automation, the manufacturing level of hydraulic control elements - hydraulic valves is also getting higher and higher. Hydraulic valves are mainly installed and fixed with screws when used in hydraulic systems, but there are always shocks and vibrations in the operation of hydraulic systems. If the force of the screws acts directly on the holes in the valve body, the holes will be stretched or enlarged, and the fit between the holes and the screws will become loose, increasing the chance of shock and hole damage, and the inevitable result is premature failure of the components.

[0004] At present, the widely used method to solve the above-mentioned problem is to press a rolled elastic cylindrical pin into a hole and use the elasticity of the rolled elastic cylindrical pin to buffer vibration and impact. However, the traditional method of installing the rolled elastic cylindrical pin is to use manual hammering, which has a slow installation speed and poor accuracy, and is easy to cause damage to the elastic pin. For this reason, an automatic pressing device for hydraulic valve elastic pins is provided. Summary of the invention

[0005] The purpose of the present invention is to make up for the shortcomings of the prior art and to provide an automatic pressing device for a hydraulic valve elastic pin. This solution can ensure that the elastic pin can be accurately pressed into the hydraulic valve. At the same time, the above-mentioned operation processes all adopt an automatic control system. During the entire working process, only the hydraulic valve and the elastic pin need to be placed manually, and other processes are completed automatically, which can save labor costs and improve work efficiency.

[0006] To solve the above problems, the present invention provides the following technical solutions: an automatic press-fitting device for hydraulic valve elastic pins, comprising a workbench, the inner wall of the workbench is hinged with two protective doors through a pin shaft, the outside of the workbench is provided with a conveying assembly for conveying hydraulic valves and elastic pins, a positioning assembly for limiting and fixing the hydraulic valves and elastic pins, a pressing assembly for pressing the hydraulic valves and elastic pins, and a guide assembly for controlling the moving direction of the hydraulic valves and elastic pins.

[0007] Furthermore, the conveying assembly includes a fixed seat arranged outside the workbench, a servo motor is installed on the front of the fixed seat, the output shaft end of the servo motor is fixedly connected to a transmission belt body rotatably connected to the fixed seat, a hydraulic valve body is placed on the outer surface of the transmission belt body, and an elastic pin body is installed on the inner wall of the hydraulic valve body.

[0008] The beneficial effect of adopting the above further scheme is that when the servo motor is connected to the power supply and started, it can drive the transmission belt body to rotate, and then continuously transport the hydraulic valve body and the elastic pin body placed on the outer surface of the transmission belt body, so as to subsequently press the hydraulic valve body and the elastic pin body.

[0009] Furthermore, the positioning assembly includes a first support plate and a second support plate fixedly connected to the workbench, first servo electric cylinders are installed on outer surfaces of the first support plate and the second support plate, and each telescopic end of the first servo electric cylinder is fixedly connected to a fixing frame.

[0010] The beneficial effect of adopting the above further scheme is that when the first servo electric cylinder is powered on and started, its telescopic end is extended and retracted, which can drive the fixed frame to move, thereby clamping and fixing the hydraulic valve body, so that the elastic pin body can be pressed into the elastic pin reserved hole of the hydraulic valve body later.

[0011] Furthermore, the inner wall of each fixed frame is hinged with two hinge blocks through a pin shaft, the inner wall of each fixed frame is fixedly connected with a buffer spring, and the hinge block is fixed to the buffer spring, and the inner wall of each fixed frame is installed with a distance sensor.

[0012] The beneficial effect of adopting the above further scheme is that the distance sensor can detect whether there is a hydraulic valve body being transported on the transmission belt body, and by detecting whether the distance has changed, it can be determined whether there is a hydraulic valve body being transported to the vicinity of the pressing position, thereby improving the degree of automation of the pressing device.

[0013] Furthermore, the press-fitting assembly includes a second servo electric cylinder installed on the inner wall of the second support plate, and a third support plate fixedly connected to the first support plate, and the third support plate is fixedly connected to the second support plate, the telescopic end of the second servo electric cylinder is fixedly connected to a connecting plate, the bottom surface of the connecting plate is fixedly connected to a fixing rod, the upper surface of the third support plate is installed with an electric push rod, and the telescopic end of the electric push rod is fixedly connected to a fourth support plate.

[0014] The beneficial effect of adopting the above further solution is that, through the cooperation of the above structure, it is possible to provide support for the hydraulic valve body placed on the transmission belt body, and facilitate the subsequent press-fitting of the elastic pin body into the elastic pin reserved hole of the hydraulic valve body.

[0015] Furthermore, the guide assembly includes a fifth support plate fixedly connected to the fixed seat, a third servo electric cylinder is installed on the outer surface of the fifth support plate, and a telescopic end of the third servo electric cylinder is fixedly connected to the guide plate.

[0016] The beneficial effect of adopting the above further solution is that, through the cooperation of the above structure, it is possible to provide guidance for the transportation of the hydraulic valve body, so that it can be transported in a straight line as much as possible, thereby improving the accuracy of subsequent positioning of the hydraulic valve body.

[0017] Furthermore, the four corners of the bottom surface of the workbench are all threadedly connected with adjustable foot supports, and the inner wall of the fixing seat is provided with mounting holes for fixing the fixing seat.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that by rotating the adjustment foot support, the workbench can be leveled, thereby improving the accuracy of press-fitting the hydraulic valve and the elastic pin, and the fixing bolt is passed through the mounting hole and screwed into the reserved hole opened at the mounting position of the fixing seat, so that the fixing seat can be installed and fixed, thereby improving the stability of the subsequent transportation of the hydraulic valve body.

[0019] Furthermore, a control panel is installed on the front side of the first supporting plate.

[0020] The beneficial effect of adopting the above further solution is that, by setting up a control panel, it is possible to conveniently and uniformly control the electrical components in the automatic press-fitting device for the elastic pin of the hydraulic valve, thereby improving the convenience during use.

[0021] Compared with the prior art, the hydraulic valve elastic pin automatic press-fitting equipment has the following beneficial effects:

[0022] 1. The present invention utilizes a conveyor belt to continuously transport the hydraulic valve and the elastic pin installed in the reserved hole of the hydraulic valve elastic pin, and can guide the hydraulic valve and the elastic pin during the transportation process, and then limit and fix them after detecting that the two have reached the specified position, thereby ensuring that the elastic pin can be accurately pressed into the hydraulic valve. At the same time, the above-mentioned operation process adopts an automatic control system. During the entire working process, only the hydraulic valve and the elastic pin need to be placed manually, and other processes are completed automatically, which can save labor costs and improve work efficiency.

[0023] 2. The present invention can facilitate the leveling of the workbench by providing an adjustable foot support, thereby improving the accuracy of press-fitting the hydraulic valve and the elastic pin. By providing a mounting hole, the fixing seat can be conveniently installed and fixed, thereby improving stability during use. By providing a control panel, the electrical components in the automatic press-fitting equipment of the hydraulic valve elastic pin can be conveniently controlled in a unified manner, thereby improving convenience during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the three-dimensional structure of the overall device of the present invention;

[0025] Figure 2 It is a three-dimensional structural side view of the overall device of the present invention;

[0026] Figure 3 Schematic diagram of the local structure connection of the present invention Figure 1 ;

[0027] Figure 4 Schematic diagram of the local structure connection of the present invention Figure 2 ;

[0028] Figure 5 Schematic diagram of the local structure connection of the present invention Figure 3 .

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Workbench; 2. Protective door; 301. Fixed seat; 302. Servo motor; 303. Drive belt body; 304. Hydraulic valve body; 305. Elastic pin body; 401. First support plate; 402. Second support plate; 403. First servo electric cylinder; 404. Fixed frame; 405. Articulated block; 406. Buffer spring; 407. Distance sensor; 501. Second servo electric cylinder; 502. Connecting plate; 503. Fixed rod; 504. Third support plate; 505. Electric push rod; 506. Fourth support plate; 601. Fifth support plate; 602. Third servo electric cylinder; 603. Guide plate; 7. Adjustment foot support; 8. Mounting hole; 9. Control panel. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0033] As described in the background technology, the traditional method of installing rolled elastic cylindrical pins is to use manual hammering, which has a slow installation speed and poor accuracy, and is also easy to cause damage to the elastic pins. For this reason, this embodiment provides an automatic pressing device for hydraulic valve elastic pins, which can ensure that the elastic pins can be accurately pressed into the hydraulic valve. At the same time, the above-mentioned operation processes all use an automatic control system. During the entire working process, only the hydraulic valve and the elastic pin need to be placed manually, and other processes are completed automatically, which can save labor costs and improve work efficiency.

[0034] See also Figure 1 - Figure 5 This embodiment proposes an automatic press-fitting device for elastic pins of hydraulic valves, including a workbench 1. The inner wall of the workbench 1 is hinged with two protective doors 2 through pin shafts. The workbench 1 can be closed by the protective doors 2, so as to protect the tools placed on the workbench 1 for repairing hydraulic valves and elastic pin press-fitting devices, and a handle is installed on the front of the protective door 2 to facilitate the rotation of the protective door 2.

[0035] The four corners of the bottom surface of the workbench 1 are all threadedly connected with adjusting feet 7. By rotating the adjusting feet 7, the workbench 1 can be leveled, thereby improving the accuracy of press-fitting the hydraulic valve and the elastic pin.

[0036] The outside of the workbench 1 is provided with a conveying assembly for conveying the hydraulic valve and the elastic pin, a positioning assembly for limiting and fixing the hydraulic valve and the elastic pin, a pressing assembly for pressing the hydraulic valve and the elastic pin, and a guiding assembly for controlling the moving direction of the hydraulic valve and the elastic pin.

[0037] The conveying assembly includes a fixed base 301 arranged outside the workbench 1, a servo motor 302 is installed on the front of the fixed base 301, the output shaft end of the servo motor 302 is fixedly connected to a transmission belt body 303 rotatably connected to the fixed base 301, a hydraulic valve body 304 is placed on the outer surface of the transmission belt body 303, and an elastic pin body 305 is installed on the inner wall of the hydraulic valve body 304.

[0038] The servo motor 302 is powered on and started, which can drive the transmission belt body 303 to rotate, and then continuously transport the hydraulic valve body 304 and the elastic pin body 305 placed on the outer surface of the transmission belt body 303, so as to subsequently press-fit the hydraulic valve body 304 and the elastic pin body 305.

[0039] The inner wall of the fixing seat 301 is provided with a mounting hole 8 for installing and fixing the fixing seat 301. The fixing bolt is passed through the mounting hole 8 and screwed into the reserved hole opened at the installation position of the fixing seat 301, so that the fixing seat 301 can be installed and fixed, thereby improving the stability of the hydraulic valve body 304 during subsequent transportation.

[0040] The positioning assembly includes a first support plate 401 and a second support plate 402 fixedly connected to the workbench 1. The outer surfaces of the first support plate 401 and the second support plate 402 are both installed with first servo electric cylinders 403. The telescopic end of each first servo electric cylinder 403 is fixedly connected to a fixed frame 404. When the first servo electric cylinder 403 is powered on and started, its telescopic end is telescoped and extended, which can drive the fixed frame 404 to move, thereby clamping and fixing the hydraulic valve body 304, so as to facilitate the subsequent press-fitting of the elastic pin body 305 into the elastic pin reserved hole of the hydraulic valve body 304.

[0041] A control panel 9 is installed on the front of the first support plate 401. By setting the control panel 9, the electrical components in the hydraulic valve elastic pin automatic pressing equipment can be conveniently controlled in a unified manner, thereby improving the convenience during use. The specific installation position of the control panel 9 is selected according to actual use requirements to facilitate the operator to perform operation and control.

[0042] The inner wall of each fixed frame 404 is hinged with two hinge blocks 405 through a pin shaft, the inner wall of each fixed frame 404 is fixedly connected with a buffer spring 406, and the hinge blocks 405 are fixed to the buffer spring 406, and the inner wall of each fixed frame 404 is installed with a distance sensor 407.

[0043] The distance sensor 407 can detect whether there is a hydraulic valve body 304 being transported on the transmission belt body 303, and judge whether there is a hydraulic valve body 304 being transported to the vicinity of the pressing position by detecting whether the distance has changed. The signal is transmitted to the control panel 9 in the form of an electrical signal, thereby controlling the conveying component to stop running and controlling the positioning component to perform corresponding actions.

[0044] The press-fitting assembly includes a second servo electric cylinder 501 installed on the inner wall of the second support plate 402, and a third support plate 504 fixedly connected to the first support plate 401, and the third support plate 504 is fixedly connected to the second support plate 402, the telescopic end of the second servo electric cylinder 501 is fixedly connected to the connecting plate 502, the bottom surface of the connecting plate 502 is fixedly connected to the fixing rod 503, the upper surface of the third support plate 504 is installed with an electric push rod 505, and the telescopic end of the electric push rod 505 is fixedly connected to the fourth support plate 506.

[0045] The second servo electric cylinder 501 is powered on and started, and its telescopic end is extended and retracted, which can drive the fixed rod 503 to move up and down through the connecting plate 502, so that the elastic pin body 305 is pressed into the elastic pin reserved hole of the hydraulic valve body 304. The electric push rod 505 is powered on and started, and its telescopic end is extended and retracted, which can drive the fourth support plate 506 to move up and down, thereby providing support for the hydraulic valve body 304 placed on the transmission belt body 303.

[0046] The guide assembly includes a fifth support plate 601 fixedly connected to the fixed seat 301, and a third servo electric cylinder 602 is installed on the outer surface of the fifth support plate 601. The telescopic end of the third servo electric cylinder 602 is fixedly connected to the guide plate 603. When the third servo electric cylinder 602 is powered on and started, its telescopic end is telescoped and extended, which can drive the guide plate 603 to move, thereby providing guidance for the transportation of the hydraulic valve body 304, so that it can maintain a straight line transportation as much as possible, thereby improving the accuracy of subsequent positioning of the hydraulic valve body 304.

[0047] The components in the drawings of the present invention are only for style reference and are not for specific size standards. The specific sizes are determined according to actual production requirements. At the same time, the materials of the components can be replaced accordingly according to actual needs.

[0048] Each electrical component in the present invention is a conventional device purchased on the market and known to those skilled in the art. The model can be selected or customized according to actual needs. The setting method, installation method and electrical connection method thereof can be debugged and operated according to the requirements of the instruction manual for those skilled in the art, and will not be described in detail here.

[0049] Here’s how it works:

[0050] Preparation stage:

[0051] The elastic pin body 305 is pre-inserted into the elastic pin reserved hole on the hydraulic valve body 304 .

[0052] Adjust the distance between the two guide plates 603 (by starting the third servo electric cylinder 602, whose telescopic end drives the guide plate 603 to move) to adapt to the size of the hydraulic valve body 304, provide guidance for the transportation of the hydraulic valve body 304, and ensure linear transportation to improve subsequent positioning accuracy.

[0053] Conveying stage:

[0054] The servo motor 302 is started, and its output shaft drives the transmission belt body 303 to rotate, thereby continuously conveying the hydraulic valve body 304 and the elastic pin body 305 placed on the outer surface of the transmission belt body 303 .

[0055] When the hydraulic valve body 304 is transported between the two distance sensors 407 , the distance sensor 407 detects the distance change, determines that the hydraulic valve body 304 has reached the vicinity of the press-fitting position, and transmits it to the control panel 9 in the form of an electrical signal.

[0056] Positioning phase:

[0057] After receiving the signal, the control panel 9 controls the servo motor 302 to stop running and starts the first servo electric cylinder 403 .

[0058] The telescopic end of the first servo electric cylinder 403 drives the fixing frame 404 to move, so that the hinge block 405 contacts and clamps the hydraulic valve body 304 .

[0059] The buffer spring 406 buffers the clamping force applied to the hydraulic valve body 304 to avoid damage.

[0060] Support phase:

[0061] The electric push rod 505 is started, and its telescopic end drives the fourth support plate 506 to move up and down, providing support for the hydraulic valve body 304 placed on the transmission belt body 303.

[0062] Pressing stage:

[0063] The second servo electric cylinder 501 is started, and its telescopic end drives the fixing rod 503 to move up and down through the connecting plate 502 .

[0064] The fixing rod 503 accurately presses the elastic pin body 305 into the elastic pin reserved hole of the hydraulic valve body 304 .

[0065] During the entire working process, only the hydraulic valve and elastic pin need to be placed manually, and other processes (such as transportation, positioning, support and press-fitting) are completed automatically. This automated operation not only saves labor costs, but also significantly improves work efficiency.

[0066] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0067] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automatic press-fitting device for elastic pins of hydraulic valves, characterized in that: The invention comprises a workbench (1), the inner wall of which is hingedly connected to two protective doors (2) via a pin shaft, and the outside of the workbench (1) is provided with a conveying assembly for conveying a hydraulic valve and an elastic pin, a positioning assembly for limiting and fixing the hydraulic valve and the elastic pin, a pressing assembly for pressing the hydraulic valve and the elastic pin, and a guiding assembly for controlling the moving direction of the hydraulic valve and the elastic pin.

2. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 1 is characterized in that: The conveying assembly comprises a fixed seat (301) arranged outside the workbench (1), a servo motor (302) is installed on the front of the fixed seat (301), the output shaft end of the servo motor (302) is fixedly connected to a transmission belt body (303) rotatably connected to the fixed seat (301), a hydraulic valve body (304) is placed on the outer surface of the transmission belt body (303), and an elastic pin body (305) is installed on the inner wall of the hydraulic valve body (304).

3. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 1 is characterized in that: The positioning assembly comprises a first support plate (401) and a second support plate (402) fixedly connected to the workbench (1); first servo electric cylinders (403) are installed on the outer surfaces of the first support plate (401) and the second support plate (402); and a telescopic end of each of the first servo electric cylinders (403) is fixedly connected to a fixing frame (404).

4. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 3 is characterized in that: The inner wall of each fixed frame (404) is hinged with two hinge blocks (405) via a pin shaft, the inner wall of each fixed frame (404) is fixedly connected with a buffer spring (406), and the hinge block (405) is fixed to the buffer spring (406), and the inner wall of each fixed frame (404) is installed with a distance sensor (407).

5. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 3 is characterized in that: The press-fitting assembly comprises a second servo electric cylinder (501) mounted on the inner wall of a second support plate (402), and a third support plate (504) fixedly connected to the first support plate (401), and the third support plate (504) is fixedly connected to the second support plate (402), the telescopic end of the second servo electric cylinder (501) is fixedly connected to a connecting plate (502), the bottom surface of the connecting plate (502) is fixedly connected to a fixing rod (503), an electric push rod (505) is mounted on the upper surface of the third support plate (504), and the telescopic end of the electric push rod (505) is fixedly connected to a fourth support plate (506).

6. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 2, characterized in that: The guide assembly comprises a fifth support plate (601) fixedly connected to the fixed seat (301), a third servo electric cylinder (602) being mounted on the outer surface of the fifth support plate (601), and a guide plate (603) being fixedly connected to the telescopic end of the third servo electric cylinder (602).

7. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 2, characterized in that: The four corners of the bottom surface of the workbench (1) are all threadedly connected with adjustable foot supports (7), and the inner wall of the fixing seat (301) is provided with a mounting hole (8) for fixing the fixing seat (301).

8. The automatic press-fitting device for elastic pins of hydraulic valves according to claim 3 is characterized in that: A control panel (9) is installed on the front side of the first supporting plate (401).

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