KR101022402B1 - Linear Motor using sub air power - Google Patents

Abstract

The present invention relates to a linear driver using auxiliary pneumatics by reducing the use of electricity by reciprocating operation using electric power and auxiliary pneumatics, and easy to remove heat and moisture generated during operation.

According to the present invention, both ends of the case 20 are made of a tubular body, a magnet coil 24 attached to an inner wall of the case 20, and a mover 26 made of a permanent magnet and inserted into the case 20. And an operating part (2) consisting of first and second rods (3,5) formed on both sides of the mover (26); A piston 42 coupled to the case 20 and having an inlet hole 422 and an outlet hole 424 formed at a side thereof, and a piston inserted into the chamber 42 and fixed to the second rod 5. A cylinder 4 composed of 44; An air compressor supplying high pressure air to the chamber 42 of the cylinder 4 to provide operating power of the mover 26; And a control unit for controlling the operation of the air compressor and the operation of the air compressor.

Linear, actuator, air, pressure

Description

Linear motor using sub air power

The present invention relates to a linear driver using auxiliary pneumatics, and more particularly, by using reciprocating operation using electric power and auxiliary pneumatics, it is possible to reduce electricity use and to easily remove heat and moisture generated during operation. It relates to a linear driver using.

In general, a linear driver (also called a linear motor) is a driving device for linearly reciprocating a target object, and has a simpler structure and requires less space than a conventional linear motion system using a ball screw or a chain. Its excellent movement speed, thrust, precision of position control, and noise characteristics make it widely used in all industries requiring linear motion, including semiconductor manufacturing equipment and test equipment.

The conventional linear driver is composed of a rectangular case, a magnet coil attached to an inner wall of the case, a mover coiled around the case and a rod formed on one side of the mover.

Therefore, when power is applied, the mover moves forward and backward along the magnet coil so that the rod moves forward and backward.

However, the problem of the prior art is that the mover is in intimate contact with the inner wall of the magnet coil, so that when it is installed inclined, the phenomenon of wear due to friction with the magnet coil during the operation of the mover occurs.

Because of this, if the product is used for a long period of time, it needs to be replaced, which increases the maintenance cost.

In addition, since the heat generated during operation of the mover cannot be discharged, performance deterioration occurs due to overheating, and condensation occurs due to a temperature difference during natural cooling in a heated state, thus accompanied by problems of corrosion due to moisture. .

 In particular, the prior art has a drawback in that power consumption is large because the reciprocating motion of the mover depends entirely on electrical energy.

The present invention has been proposed to solve the above problems of the prior art, the first and second rods are provided on both sides of the mover, and the case is inclined by forming guide walls for supporting the first and second rods. It is an object of the present invention to provide a linear actuator using auxiliary pneumatics that can improve the durability and accuracy by allowing the mover to stably move even when installed at the site.

In addition, it has a ventilation structure that is easy to discharge the heat generated during the reciprocating motion, and to provide a linear actuator using an auxiliary pneumatic to maintain the accuracy of operation by allowing the moisture formed during the cooling process to be discharged There is this.

In addition, it is another object to provide a linear actuator using auxiliary pneumatics to control the compressed air from the external high-pressure air supply device to reduce the power consumption and provide a strong torque by combining electric energy and air pressure. .

The object of the present invention,

An operation consisting of a case made of a cylindrical body with both ends opened, a magnet coil attached to an inner wall of the case, a mover made of a permanent magnet and inserted into the case, and first and second rods formed on both sides of the mover. part;

A cylinder coupled to the case and having a inlet and outlet hole formed at a side thereof, and a piston inserted into the chamber and fixed to the second rod;

An air compressor supplying high pressure air to the chamber of the cylinder to provide operating power of the mover; And

Control unit for controlling the operation of the power supply of the operating unit and the operation of the air compressor

It can be achieved by a linear driver using an auxiliary pneumatic, characterized in that it comprises a.

Both ends of the case may further include a blocking plate installed to guide the first and second rods through.

The blocking plate and the case is characterized in that a plurality of heating holes are formed.

Displacement sensor for detecting the internal pressure of the chamber is characterized in that it is further provided.

According to the present invention, the linear motion can be accurately maintained by the first and second rods provided on both sides of the mover, and even if installed inclined, the closed end of the wearer's inner wall can be prevented as in the prior art, thereby improving durability and accuracy. There is an effect that can be.

In addition, it is possible to remove the heat and moisture generated inside there is an effect that can improve the life.

In particular, since the auxiliary power can be provided by the operation of the air compressor, it is possible to drastically reduce the power consumption, and also to maintain the correct operating performance.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a linear driver using the auxiliary pneumatic pressure according to the present invention, Figures 2 and 3 is a view showing a linear driver using the auxiliary pneumatic pressure in accordance with the present invention showing the reciprocating operation of the mover, 2 is a state where the mover is raised, and FIG. 3 is a state where the mover is lowered.

As shown in Figures 1 to 3, the linear driver A using the auxiliary pneumatic according to the present invention,

A case 20 having a cylindrical shape with both ends opened, a magnet coil 24 attached to an inner wall of the case 20, a mover 26 made of a permanent magnet and inserted into the case 20; An operating part (2) consisting of first and second rods (3,5) formed on both sides of the mover (26);

A piston 42 coupled to the case 20 and having an inlet hole 422 and an outlet hole 424 formed at a side thereof, and a piston inserted into the chamber 42 and fixed to the second rod 5. A cylinder 4 composed of 44;

An air compressor (6) for supplying high pressure air to the chamber (42) of the cylinder (4) to provide operating power for the mover (26);

It is configured to include a control unit 8 for controlling the operation of the power supply and the operation of the air compressor interlocked with each other.

Each component is demonstrated in detail.

The operation part 2 is formed of a cylindrical case 20 having both ends opened, a magnet coil 24 attached to an inner wall of the case 20, and a permanent magnet and inserted into the case 20. The mover 26 and the first and second rods 3 and 5 formed on both sides of the mover 26 are provided.

The blocking plate 224 is further installed at both ends of the case 20 so that the first and second rods 3 and 5 are guided through the opening.

A plurality of heat generating holes 220 are formed in the blocking plate 224 and the case 20.

The case 20 is a cylindrical shape is the most ideal shape, but is not limited to this may be rectangular. In addition, a plurality of heat generating holes 220 are formed on the outer circumferential surface of the case 20 so that heat that may be generated during the reciprocating operation of the mover 26 may be quickly discharged, and moisture generated therein may be easily discharged. It was made.

The magnet coil 24 is the alternating generation of the positive electrode and the negative electrode, the movable polarizer 26 can be continuously moved by this repeated polarity, which is the same principle as the conventional linear motor because it employs a detailed description It will be omitted.

The mover 26 is a permanent magnet inserted into the magnet coil 24 to reciprocate and installed on the upper and lower sides of the magnet coil 24 so as to face the first and second rods 3 and 5, respectively.

The openings at both ends of the case 20 are coupled with a blocking plate 224 having a through hole through which the first and second rods 3 and 5 are inserted to perform the appearance of the first and second rods 3 and 5. To guide.

When the inclination due to the rod is formed only on one side of the conventional mover 26, the portion without the rod scratches the magnet coil 24 and eventually causes wear phenomenon due to frictional contact. In order to form the first and second rods (3, 5) on both sides of the mover (26) and to guide the linear movement of the blocking plate 224 is configured.

Here, the linear motion means reciprocating motion and the drawing reference means lifting operation.

By this structure, since the first and second rods 3 and 5 can ensure linear motion, wear can be prevented even in an inclined state.

In addition, an object (not shown) is coupled to an upper end of the first rod 3. The object is accompanied by a reciprocating motion by the reciprocating operation of the linear actuator (A) using the auxiliary pneumatic of the present invention is not limited to this particular object, and the detailed description is omitted because such an object is not a characteristic component of the present invention. I will do it.

The cylinder 4 is coupled to the case 20 and has a chamber 42 having an inlet 422 and an outlet 424 formed on a side thereof, and is inserted into the chamber 42 and the second rod 5. It is composed of a piston 44 fixed to).

The inlet hole 422 and the outlet hole 424 are provided with a valve (V) for controlling the air flow rate, the valve (V) is preferably applied to the solenoid valve so that the opening and closing degree can be controlled by the control unit. .

The chamber 42 is preferably formed of a cylinder having the same shape and diameter as the case 20.

In addition, the inner lower portion of the chamber 42 is further provided with a displacement sensor 426 for generating a rising signal before the lower end of the second rod (5) descending the inner bottom surface of the chamber, the displacement sensor 426 ) Is connected to the control unit 8.

Therefore, when the second rod 5 descends, the lower end thereof is raised before being impacted by the inner lower end surface of the chamber 42, thereby preventing damage and noise generation.

An inlet hole 422 is formed at one upper side of the chamber 42 and an outlet hole 424 is formed at one lower side thereof, and a piston 44 is disposed between the inlet hole 422 and the outlet hole 424.

The piston 44 is in the shape of a conventional disk and is inserted to be in close contact with the inner wall of the chamber 42 and is fixed with the second rod 5 penetrated at the center thereof to operate together with the second rod 5.

Of course, the rubber material may be further formed on the outer circumferential surface to increase the adhesion of the piston 44.

The air compressor 6 supplies operating pressure of the mover 26 by supplying high pressure air through the outlet hole 424 provided in the chamber 42 of the cylinder 4.

That is, the air compressor 6 is driven so that the compressed air flows back into the chamber 42 through the outlet hole 424, and the compressed air thus introduced pushes the piston 44 so as to follow the second rod 5 ) And the mover 26 are raised (based on the drawing).

Therefore, if the countercurrent high-pressure air is properly supplied in accordance with the timing at which the mover 26 should rise, power consumption to raise the mover 26 can be reduced.

The control unit 8 is for supplying electricity and supplying air pressure continuously and alternately and is composed of a PC and an operation pad having a conventional microcomputer.

The control unit 8 implements two modes of operation. That is, the motor is divided into an electric mode in which the mover 26 is reciprocated by electric power supply, and a mixed mode in which the air compressor 6 is driven to reversely supply compressed air to assist the reciprocation of the mover 26. Could be.

Hereinafter will be described the operation relationship of the linear actuator using the auxiliary pneumatic according to the present invention.

Electric mode

When the electric motor mode is selected by operating the control unit 8,

When power is applied to the mover 26, the reciprocating operation is performed along the magnet coil 24, and the first and second rods 3 and 5 are driven reciprocally.

Since the object 100 is coupled to the first rod 3, the object 100 implements a desired function while reciprocating.

In addition, the second rod 5 is reciprocated, and the piston 44 subordinate to it is reciprocated. For example, when descending, external air is introduced through the inlet hole 422, and the upper half The compressed air in the chamber 42 through the outlet hole 424 is discharged to the outside, so that the reciprocating operation of the mover 26 can be smoothly ensured.

In addition, the heated air generated inside the case 20 by the reciprocating of the mover 26 is discharged and introduced through the heat generating hole 220 to be cooled.

Mixed mode

If you select a blend mode,

The air compressor 6 is driven so that the compressed air flows through the lower outlet hole of the chamber, and the compressed air thus pushed in the piston 44 is driven to the second rod 5 and the mover 26. As it rises, the first and second rods 3 and 5 rise.

The supply amount of the compressed air supplied from the air compressor 6 is very small since only the degree to which the mover 26 rises momentarily is very small, and the air compressor 6 is stopped after the supply of the fixed amount.

As soon as power is applied to the mover 26, it descends along the magnet coil 24, which is driven to lower the first and second rods 3 and 5.

Therefore, the mover can reciprocate by alternating supply of air pressure and power.

As a result, the object coupled to the first rod 3 or the second rod 5 reciprocates to implement a desired function.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

1 is a view showing the configuration of a linear driver using auxiliary pneumatics according to the present invention.

2 and 3 are views illustrating a linear actuator using auxiliary pneumatics according to the present invention showing the reciprocating operation of the mover, FIG. 2 is a state where the mover is raised, and FIG. 3 is a state where the mover is lowered.

* Description of the main components of the drawings *

2: case 3: first rod

4: cylinder 5: second rod

24: magnet coil 26: mover

42: chamber 44: piston

220: heating hole 426: displacement sensor

Claims (4)

A case 20 having a cylindrical shape with both ends opened, a magnet coil 24 attached to an inner wall of the case 20, a mover 26 made of a permanent magnet and inserted into the case 20; An operating part (2) consisting of first and second rods (3,5) formed on both sides of the mover (26); A piston 42 coupled to the case 20 and having an inlet hole 422 and an outlet hole 424 formed at a side thereof, and a piston inserted into the chamber 42 and fixed to the second rod 5. A cylinder 4 composed of 44; An air compressor supplying high pressure air to the chamber 42 of the cylinder 4 to provide operating power of the mover 26; It includes a control unit for controlling the operation of the power supply of the operating unit 2 and the operation of the air compressor, The blocking plate 224 is further installed at both ends of the case 20 so that the first and second rods 3 and 5 penetrate and guide the same. A plurality of heat generating holes 220 are formed in the blocking plate 224 and the case 20, The auxiliary lower pneumatic pressure is further provided on the inner lower portion of the chamber 42, further comprising a displacement sensor 426 generating a rising signal before the lower end of the second rod 5 descending reaches the inner lower surface of the chamber. Linear actuator. delete delete delete

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