Electromagnetic valve for machining center tool breaking cylinder

Abstract

The utility model discloses a machining center hits the electromagnetic valve of sword jar, including pilot head subassembly and install the valve body in pilot head subassembly one end, the one side of valve body is equipped with the air inlet second exhaust port and first exhaust port, the perpendicular side of valve body is equipped with second working port and first working port, the inner wall of second exhaust port and first exhaust port is embedded with the silencer, the utility model discloses a silencer is installed in the inside of valve body surface second exhaust port and first exhaust port, and is fixed by screw thread, when second exhaust port and first exhaust port exhaust at this time, the noise generated at this time first passes through the sound attenuation board and the wave line on the sound attenuation board and carries out the preliminary noise reduction, and then the noise passes through the through -hole and is absorbed in the inside of sound attenuation cotton, and then realizes the noise reduction treatment to the noise generated in the exhaust end of second exhaust port and first exhaust port, improves staff working environment comfort.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic valve technology, specifically relating to an electromagnetic valve for a machining center tool-changing cylinder. Background Technology

[0002] The three-position five-way solenoid valve is a key control component in the tool clamping cylinder system of a machining center. It controls the flow and direction of airflow to achieve tool release and clamping. The three-position five-way solenoid valve mainly consists of a valve body, valve core, solenoid coil, and spring return mechanism. The valve body has five ports: one inlet, two outlets, and two exhaust ports. The valve core can move left and right under the drive of the solenoid coil, changing the airflow path. The spring return mechanism returns the valve core to its initial position when the solenoid coil is de-energized.

[0003] The three-position five-way solenoid valve has three stable operating states: left, center, and right. When one solenoid coil is energized, the valve core moves to the left, and the air path is connected in one way, such as connecting the inlet P to the outlet A and the outlet B to the exhaust S, controlling the piston of the cutter cylinder to move in one direction to achieve the action of releasing or clamping the cutter. When the other solenoid coil is energized, the valve core moves to the right, and the air path is connected in another way, such as connecting the inlet P to the outlet B and the outlet A to the exhaust R, causing the piston to move in the opposite direction. When both solenoid coils are de-energized, the solenoid valve is in the center position, and the air path connection method varies depending on its structure.

[0004] Specifically, in the tool changing cycle of the tool-changing cylinder controlled by a three-position five-way solenoid valve in the machining center, the solenoid valve needs to frequently switch the air path to drive the piston extension and retraction of the tool-changing cylinder. When clamping the tool, exhaust is discharged through port B, and when releasing the tool, exhaust is discharged through port A. Each exhaust is accompanied by a high-pressure airflow impacting the atmosphere at high speed. This exhaust without silencing treatment produces sharp noise, which not only far exceeds the noise limit of the workshop environment, but also causes hearing fatigue and distraction of operators with long-term exposure, increasing the risk of misoperation. At the same time, high-frequency noise can mask abnormal sounds from the equipment, delaying troubleshooting. Utility Model Content

[0005] The purpose of this invention is to provide a solenoid valve for a tool-changing cylinder in a machining center. This addresses the problem in machining centers where a three-position five-way solenoid valve controls the tool-changing cycle of the cylinder. The solenoid valve frequently switches air paths to drive the piston extension and retraction of the tool-changing cylinder. Exhaust is emitted from port B when clamping the tool and from port A when releasing the tool. Each exhaust is accompanied by a high-pressure airflow impacting the atmosphere at high speed. This un-silenced exhaust produces a sharp noise that far exceeds the noise limits for the workshop environment. Long-term exposure can lead to hearing fatigue and distraction for operators, increasing the risk of operational errors. Furthermore, the high-frequency noise can mask abnormal equipment sounds, delaying troubleshooting.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solenoid valve for a machining center tool-cutting cylinder, comprising a pilot head assembly and a valve body installed at one end of the pilot head assembly, wherein an air inlet, a second exhaust port, and a first exhaust port are installed on one side of the valve body, and a second working port and a first working port are installed on the vertical side of the valve body; The inner walls of the second exhaust port and the first exhaust port are fitted with silencer pipes. The inner side of the silencer pipe has a through hole. The inner wall of the silencer pipe is fitted with sound-absorbing cotton. The inner side of the silencer pipe is connected to a sound-absorbing plate.

[0007] In order to enable the mounting block at the bottom of the rubber plate to mate with the mounting base, as a preferred embodiment of the solenoid valve for the machining center tool-cutting cylinder of this utility model, one end surface of the silencer pipe is provided with threads, and the silencer pipe is threadedly connected to the inner wall of the second exhaust port and the first exhaust port.

[0008] To facilitate and improve the working environment, in the preferred embodiment of the solenoid valve for the cutting cylinder of the machining center according to this utility model, the through hole is connected to the opening on the inner wall of the silencer tube, and the silencer cotton is made of polyester fiber cotton.

[0009] To facilitate initial noise reduction, the surface of the silencing plate of the preferred solenoid valve for the machining center tool-cutting cylinder of this utility model is wavy, and the silencing plate is a porous engineering plastic plate.

[0010] To facilitate improved airflow control, the preferred solenoid valve for a machining center tool-cutting cylinder of this utility model has an internal cavity in the valve body, and a moving iron core is installed inside the cavity.

[0011] To facilitate the movement of the valve stem, in a preferred embodiment of the solenoid valve for a machining center tool-cutting cylinder according to this utility model, a valve stem is installed inside the internal cavity of the valve body, and one end of the valve stem is connected to a piston, which communicates with the valve port inside the cavity.

[0012] In order to enhance the reset driving force, in the preferred embodiment of the solenoid valve for the tool-cutting cylinder of the machining center according to this utility model, the other end of the valve stem is connected to a first reset spring, and the opening of one end of the piston is connected to a second reset spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention involves installing a silencer pipe inside the second and first exhaust ports on the valve body surface and fixing it with threads. When the second and first exhaust ports are venting, the noise generated is first reduced by the silencer pipe through the silencer plate and the corrugated surface of the silencer plate. Then, the noise enters the sound-absorbing cotton through the through holes and is absorbed, thereby reducing the noise generated at the exhaust ends of the second and first exhaust ports and improving the comfort of the working environment for the staff. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall assembly structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from a bottom view.

[0016] Figure 3 This is an exploded view of the muffler pipe installation structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the silencer pipe of this utility model.

[0018] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0019] In the diagram: 1. Pilot head assembly; 2. Valve body; 3. Air inlet; 4. Second exhaust port; 5. First exhaust port; 6. Second working port; 7. First working port; 8. Silencer pipe; 9. Through hole; 10. Silencer cotton; 11. Silencer plate; 101. Cavity; 102. Moving iron core; 103. Valve stem; 104. Piston; 105. First return spring; 106. Second return spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5The present invention provides the following technical solution: a solenoid valve for a machining center tool-cutting cylinder, comprising a pilot head assembly 1 and a valve body 2 installed at one end of the pilot head assembly 1, wherein an air inlet 3, a second exhaust port 4 and a first exhaust port 5 are installed on one side of the valve body 2, and a second working port 6 and a first working port 7 are installed on the vertical side of the valve body 2. The inner walls of the second exhaust port 4 and the first exhaust port 5 are fitted with silencer pipes 8. The inner side of the silencer pipe 8 is provided with a through hole 9. The inner wall of the silencer pipe 8 is fitted with sound-absorbing cotton 10. The inner side of the silencer pipe 8 is connected with a sound-absorbing plate 11.

[0022] Preferably, one end of the muffler pipe 8 is provided with threads, and the muffler pipe 8 is threadedly connected to the inner walls of the second exhaust port 4 and the first exhaust port 5. In actual use, by threading the muffler pipe 8 to the second exhaust port 4 and the first exhaust port 5, noise absorption is facilitated. Preferably, the through hole 9 communicates with the opening on the inner wall of the silencing tube 8, and the sound-absorbing cotton 10 is made of polyester fiber cotton. In actual use, by connecting the through hole 9 to the silencing tube 8, noise is ensured to enter the interior of the sound-absorbing cotton 10 and be absorbed by the sound-absorbing cotton 10.

[0023] Preferably, the surface of the sound-absorbing plate 11 is wavy, and the sound-absorbing plate 11 is a porous engineering plastic plate. In practical use, by using the porous engineering plastic plate, noise can be initially reduced, absorbing a portion of the noise.

[0024] Preferably, the valve body 2 has a cavity 101 inside, and a moving iron core 102 is installed inside the cavity 101.

[0025] Preferably, a valve stem 103 is installed inside the internal cavity of the valve body 2, and a piston 104 is connected to one end of the valve stem 103. The piston 104 is connected to the valve port inside the cavity 101.

[0026] Preferably, a first return spring 105 is connected to the other end of the valve stem 103, and a second return spring 106 is connected to the opening at one end of the piston 104. In actual use, by energizing the pilot head assembly 1, the moving iron core 102 is moved, allowing the gas medium to enter the cavity where the piston 104 is located through the cavity 101. At the same time, the valve stem 103 is moved and adjusted to change the airflow direction. The first return spring 105 is used to adjust the displacement of the valve stem 103. In addition, the second return spring 106 at the other end of the valve stem 103 can increase the reset driving force, avoiding the valve core reset delay caused by insufficient elasticity or aging due to the use of three springs, which would lead to a delay in the action of the machining center's tool-changing cylinder and affect the equipment cycle time.

[0027] The working principle of this utility model is as follows: First, the silencer pipe 8 is installed inside the second exhaust port 4 and the first exhaust port 5 on the surface of the valve body 2 and fixed with threads. When the second exhaust port 4 and the first exhaust port 5 exhaust, the noise generated is initially reduced by the silencer pipe 8 through the silencer plate 11 and the corrugated surface of the silencer plate 11. Then, the noise enters the sound-absorbing cotton 10 through the through hole 9 and is absorbed, thereby reducing the noise generated at the exhaust ends of the second exhaust port 4 and the first exhaust port 5 and improving the comfort of the working environment for the staff.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solenoid valve for a tool-cutting cylinder in a machining center, comprising a pilot head assembly (1) and a valve body (2) mounted on one end of the pilot head assembly (1), characterized in that: An air inlet (3), a second exhaust port (4), and a first exhaust port (5) are installed on one side of the valve body (2), and a second working port (6) and a first working port (7) are installed on the vertical side of the valve body (2). The inner walls of the second exhaust port (4) and the first exhaust port (5) are fitted with a silencer pipe (8), the inner side of the silencer pipe (8) is provided with a through hole (9), the inner wall of the silencer pipe (8) is fitted with a sound-absorbing cotton (10), and the inner side of the silencer pipe (8) is connected with a sound-absorbing plate (11).

2. The solenoid valve for a machining center tool-changing cylinder according to claim 1, characterized in that: One end of the muffler (8) is provided with threads, and the muffler (8) is threadedly connected to the inner wall of the second exhaust port (4) and the first exhaust port (5).

3. The solenoid valve for a machining center tool-changing cylinder according to claim 1, characterized in that: The through hole (9) is connected to the opening on the inner wall of the silencing tube (8), and the silencing cotton (10) is made of polyester fiber cotton.

4. The solenoid valve for a machining center tool-changing cylinder according to claim 1, characterized in that: The surface of the sound-absorbing plate (11) is wavy, and the sound-absorbing plate (11) is an engineering plastic porous plate.

5. The solenoid valve for a machining center tool-changing cylinder according to claim 1, characterized in that: The valve body (2) has a cavity (101) inside, and a moving iron core (102) is installed inside the cavity (101).

6. The solenoid valve for a machining center tool-changing cylinder according to claim 1, characterized in that: A valve stem (103) is installed inside the internal cavity of the valve body (2). One end of the valve stem (103) is connected to a piston (104), and the piston (104) is connected to the valve port inside the cavity (101).

7. The solenoid valve for a machining center tool-changing cylinder according to claim 6, characterized in that: The other end of the valve stem (103) is connected to a first return spring (105), and the opening at one end of the piston (104) is connected to a second return spring (106).

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