KR20150046409A - Device and method for assembling pole core of flow control valve - Google Patents

Abstract

The present invention relates to an apparatus and a method for assembling the pole core of a flow control valve. The apparatus pressing the pole core in a sleeve coupled to one side of the body part of the flow control valve comprises: a fixing part supporting the lower side of the body part so that the sleeve can face upwardly; an operating part installed on the upper side of the fixing part, able to be moved vertically, and having a pole core supporting part installed on the lower side thereof and supporting the pole core; a measuring part installed on the lower side of the fixing part, able to be moved vertically, arranged to be able to touch a needle inserted into the body part, and capable of measuring the upward moving distance of the needle; and a control part determining the operating distance of the operating part when receiving the value of the upward moving distance of the needle from the measuring part, wherein the control part is required to vary the downward moving distance of the operating part according to the upward moving distance of the needle.

Description

TECHNICAL FIELD [0001] The present invention relates to a pole core assembly for a flow control valve,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pole core assembly apparatus and method for assembling a flow control valve, and more particularly, to a pole core assembly method for a flow control valve capable of quickly and accurately assembling a pole core to a flow control valve.

The fuel of the vehicle is stored in the fuel tank and is transferred to the engine by the fuel pump. Here, a flow control valve is provided between the fuel tank and the fuel pump to control the flow rate of the fuel sucked from the fuel tank to the fuel pump.

As a technique related to such a flow control valve, Patent Document 10-2011-0042948 (patent document) has been disclosed.

The technology of the above patent document discloses a fuel filter that is connected to a lower end of a fuel filter that filters fuel in a fuel tank and then transfers the filtered fuel to an engine and is connected to a housing formed at a lower end of the fuel filter, A fixing member fixedly coupled to the other end of the housing and having an inflow hole formed therein to allow fuel to flow in the fuel filter; And a movable member formed on a surface of the movable member which is in contact with the fixed member. The abnormal condition of the fuel supply of the vehicle, such as overturning of the vehicle or damage to the fuel transfer line, If the pressure rises above the user-set nominal pressure, Because by using a pressure control valve to the recovery reservoir cup there is disclosed a configuration such that the fuel pressure decreases.

1 is a cross-sectional view illustrating a general flow control valve.

1, the flow control valve 100 includes a body 110, a needle 120, an armature 130, a pole core 140, a sleeve 150, a spring 160, and an end cap (not shown) ). The flow rate control valve 100 has an armature 130 coupled to one end of the needle 120 and an armature 130 inserted into the body 110. A sleeve 150 is coupled to an outer circumferential surface at one end of the body 110 where the armature 130 is inserted and the body 110 and the pole core 140 are coupled through a sleeve 150. At this time, the spring 160 is inserted into the pole core 140 so as to be interposed between the pole core 140 and the armature 130, the end cap is coupled to one end of the pole core 140, So that a spring force is formed inside the pole core (140).

Here, the armature 130 and the pole core 140 should be spaced apart from each other by a certain distance. The target value of the distance between the armature 130 and the pole core 140 corresponds to 0.6 +/- 0.015 mm. The spaced distance between the armature 130 and the pole core 140 is determined by the lift distance of the needle 120. That is, the armature 130 can move to contact the pole core 140 by pushing the needle 120, and the moving distance at this time is the same as the lift distance of the needle 120.

The flow control valve 100 measures the distance between the armature 130 and the pole core 140 by manually pressing the pole core 140 into the sleeve 150. When the distance between the armature 130 and the pole core 140 does not reach the target value, the distance between the armature 130 and the pole core 140 is twice the target value . The assembly of the pole core 140 may cause a problem that the cycle time is long.

In addition, when the primary press-fitting is performed, the pole core 140 can not be accurately pressurized by the second distance between the pole core 140 and the armature 130 and the target value, There is a problem that the distance between the target value and the target value is distantly increased so that the pressing process must be further performed.

Korean Patent Publication No. 10-2011-0042948 (April 27, 2011).

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a pole core assembling apparatus and a method of assembling a flow control valve, which can reduce the cycle time consumed in assembling the pole core by automatically assembling the pole core .

It is another object of the present invention to provide a pole core assembling apparatus and method of a flow control valve capable of adjusting a press-in distance of a pole core such that a distance between a pole core and an armature is not less than or less than a target value.

According to an aspect of the present invention, there is provided a pole core assembling apparatus for a flow rate adjusting valve for press-fitting a pole core into a sleeve coupled to one side of a body portion of a flow control valve, An operating portion provided on the upper side of the fixing portion so as to be movable up and down and having a pole core supporting portion for supporting the pole core at a lower portion thereof, A measuring unit arranged to be able to contact the needle inserted into the body and capable of measuring an upward movement distance of the needle, and a control unit receiving the upward movement distance of the needle from the measurement unit to determine a working distance of the operation unit Wherein the control unit controls the moving distance of the operating unit in a downward direction according to an upward movement distance of the needle, It is preferable.

Preferably, the actuating part includes a servo press coupled to an upper side of the pole core supporting part so as to numerically control up and down movement of the pole core supporting part.

In addition, it is preferable that the controller limits the pole core press-in of the actuating part when the moving distance of the needle received from the measuring part is within 0.6 +/- 0.015 mm.

As another embodiment of the present invention, there is provided a method of assembling a pole core assembly of a flow control valve, comprising: a first press-fitting step of press-fitting a pole core into a sleeve; a measuring step of measuring a distance between the armature and the pole core; Comparing the distance value measured in the measuring step with a target value of a distance between the armature and the pole core and calculating an error value; And a second press-fitting step of applying a second press-fitting step to the second press-fitting step.

Here, it is preferable that the first pressing-in step moves the operating part to a certain distance and presses the pole core into the sleeve.

Preferably, the measuring step measures an upward movement distance of the needle, and determines the movement distance of the needle as a distance between the armature and the pole core.

The comparison step preferably performs the second indentation step when the target value is 0.6 +/- 0.015 mm and the distance value measured in the measuring step is measured to be farther than the target value.

The second indentation step preferably presses the pole core by a distance corresponding to the error value when the distance value measured in the measuring step is measured to be farther than the target value.

According to the present invention, when the distance between the pole core and the armature is measured after the first pressing of the pole core and the distance is longer than the target value, the pole core is automatically press- There is an effect that the cycle time consumed in assembly can be reduced.

Further, according to the present invention, by controlling numerically the pole core press-in distance by the servo press, it is possible to control the press-in distance of the pole core so that the spaced distance between the pole core and the armature does not exceed or exceed the target value have.

1 is a sectional view for explaining the structure of a general flow control valve of Fig. 1; Fig.
2 is a front view illustrating a pole core assembling apparatus of a flow control valve according to an embodiment of the present invention;
3 is a cross-sectional view illustrating a pole core assembling apparatus of the flow control valve of FIG. 2;
4 is a cross-sectional view for explaining a state in which the pole core is press-fitted in the pole core assembling apparatus of the flow control valve of FIG. 2;
5 is a cross-sectional view illustrating a state in which a distance between the pole core and the armature is measured in the pole core assembling apparatus of the flow control valve of FIG. 2;
6 is a flowchart for explaining a method of assembling the pole core assembling device of the flow control valve of FIG. 2;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 2 is a front view illustrating a pole core assembling apparatus of a flow control valve according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a pole core assembling apparatus of the flow control valve of FIG.

2 and 3, the pole core assembling apparatus 200 of the flow control valve 100 presses the pole core 140 into the sleeve 150 coupled to one side of the body portion 110 of the flow control valve 100, do. That is, the pole core assembling apparatus 200 of the flow rate control valve is a device for coupling the pole core 140 and the body portion 110 by pressing the pole core 140 into the sleeve 150. The pole core assembling apparatus 200 of the flow rate control valve includes a fixing unit 210, an actuating unit 220, a measuring unit 230, and a control unit 240.

The fixing portion 210 supports the lower portion of the body portion 110 so that the sleeve 150 faces upward. The fixing portion 210 is disposed to face the operation portion 220 and supports the body portion 110 such that the upper portion of the body portion 110 faces the operation portion 220 side.

The operation unit 220 includes a pole core supporting portion 221 which is vertically movable above the fixing portion 210 and supports the pole core 140 at a lower portion thereof. The actuating part 220 is disposed to face the fixing part 210 and presses the pole core 140 supported by the pole core supporting part 221 into the sleeve 150 in accordance with the upward and downward movements to be engaged with the body part 110 do.

The actuating part 220 includes a servo press 222 coupled to the pole core supporting part 221 so that the vertical movement of the pole supporting part 221 can be numerically controlled. The servo press 222 includes a servo motor 222a and a drive unit 222b that receives the rotational force of the servo motor 222a and moves up and down. At this time, the power transmission components of the servo motor 222a and the driving unit 222b are omitted. The driving part 222b is coupled with the pole core supporting part 221 on the lower side to move the pole core supporting part 221 up and down by the rotational force of the servo motor 222a.

The measuring unit 230 is disposed below the fixing unit 210 so as to be movable up and down and is disposed so as to be in contact with the needle 120 inserted into the inside of the body 110, Distance can be measured. That is, the measuring unit 230 measures the upward movement distance of the needle 120 from the position contacting the needle 120 as it moves upward, and transmits the measured distance to the control unit 240.

At this time, the needle 120 to be moved by the measuring unit 230 is coupled with the armature 130 inside the body 110, and the armature 130 is moved together with the upward movement of the needle 120, (Not shown). Thus, the upward movement distance of the needle 120 corresponds to the spaced distance between the armature 130 and the pole core 140.

The control unit 240 receives the upward movement distance of the needle 120 from the measurement unit 230 and determines the operation distance of the operation unit 220. The control unit 240 moves the actuating unit 220 downward for a predetermined distance and presses the pole core 140 into the sleeve 150 for a first time and moves the upper surface of the needle 120 received from the measuring unit 230 The secondary press-in distance of the operation part 220 is determined according to the direction movement distance. That is, the control unit 240 varies the moving distance of the operation unit 220 in accordance with the upward movement distance of the needle 120.

If the moving distance of the needle 120 received from the measuring unit 230 in the upward direction is within 0.6 ± 0.015 mm, the control unit 240 controls the pushing operation of the additional pole core 140 of the actuating unit 220 Limit. Hereinafter, a state in which the pole core 140 is press-fitted into the pole core assembling apparatus 200 of the flow control valve will be described with reference to FIG.

4 is a cross-sectional view for explaining a state in which the pole core is press-fitted in the pole core assembling apparatus of the flow control valve of FIG. 2;

4, the pole core assembling apparatus 200 of the flow rate control valve numerically controls the downward movement of the pole core support 221 through the servo press 222 to move the pole core 140 to the sleeve 150 ). That is, the pole core assembling apparatus 200 of the flow rate control valve first presses the pole core 140 into the sleeve 150 by moving the pole core supporting portion 221 a predetermined distance. After the primary press-fitting, the measuring unit 230 measures a distance between the armature 130 and the pole core 140, and the controller 240 compares the measured distance and the target value. At this time, the target value of the distance between the armature 130 and the pole core 140 is 0.6 +/- 0.015 mm.

When the distance measured between the armature 130 and the pole core 140 measured by the measuring unit 230 is measured to be greater than 0.6 +/- 0.015 mm, the control unit 240 determines that only the difference between the measured distance and the target value And the pole core 140 is secondarily press-fitted.

If the distance measured between the armature 130 and the pole core 140 measured by the measuring unit 230 is within 0.6 0.015 mm, the control unit 240 controls the operation of the additional pole core 140 of the operation unit 220, (140). 5, a state in which the distance between the pole core 140 and the armature 130 is measured in the pole core assembling apparatus 200 of the flow control valve will be described.

5 is a cross-sectional view illustrating a state in which the distance between the pole core and the armature is measured in the pole core assembling apparatus of the flow control valve of FIG. 2;

5, the pole core assembling apparatus 200 of the flow rate control valve moves the operating part 220 a predetermined distance to first press the pole core 140 into the sleeve 150, and then moves the measuring part 230 And the upward movement distance of the needle 120 is measured. At this time, the measuring unit 230 measures the maximum movable distance of the needle 120 from the position where the measuring unit 230 contacts the needle 120 as it moves upward.

Here, the needle 120 is coupled to the armature 130 within the body 110, and moves the armature 130 together as the measurement unit 230 moves the needle 120. The spacing distance between the armature 130 and the pole core 140 is the movable distance of the needle 120. [ That is, the movable distance of the needle 120 is the distance between the armature 130 and the pole core 140. Hereinafter, a method of assembling the pole core assembling apparatus 200 of the flow control valve will be described in detail with reference to FIG.

6 is a flowchart for explaining a method of assembling the pole core assembling device of the flow rate control valve of FIG.

Referring to FIG. 6, the pole core assembling apparatus of the flow control valve can assemble the pole core as follows.

First, the pole core is first press-fitted into the sleeve (S610). After the first indentation, the distance between the armature and the pole core is measured (S620). Here, the measured distance value is compared with the target value of the distance between the armature and the pole core, and an error value is calculated (S630). If the measured distance value is measured to be farther than the target value, the pole core is secondly press-fitted so as to be pressed into the distance of the error value (S640).

The steps of this assembly method will be described in detail below.

A first press-fitting step;

The pole core 140 is press-fitted into the sleeve 150. That is, the actuating part 220 is moved downward by a certain distance to press the pole core 140 into the sleeve 150 for the first time. At this time, the operating portion 220 can numerically control the moving distance by the servo press 222.

Measuring step;

After the first indentation step, the spaced distance between the armature 130 and the pole core 140 is measured. That is, the moving distance of the needle 120 is measured by moving the measuring unit 230 in the upward direction, and the moving distance of the needle 120 is determined as the distance between the armature 130 and the pole core 140 . The measuring unit 230 transmits the distance value between the armature 130 and the pole core 140 to the control unit 240.

A comparison step;

The controller 240 compares the distance value measured in the measuring step with the target value of the distance value between the armature 130 and the pole core 140, and calculates an error value. At this time, if the target value is 0.6 ± 0.015 mm and the distance value measured in the measuring step is measured to be farther than the target value, the controller 240 causes the second pressing step to be performed. On the other hand, when the distance value measured in the measuring step falls within the target value, the controller 240 does not perform the second indenting step.

A second press-fitting step;

The pole core 140 is further press-fitted according to the error value calculated in the comparison step. That is, when the distance value measured in the measuring step is measured to be farther than the target value, the controller 240 second-presses the pole core 140 by a distance corresponding to the error value calculated in the comparison step.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

200: Pole core assembling device of flow control valve
210: fixing part 220:
221: pole core supporting portion 222: servo press
230: measuring unit 240:

Claims (9)

A pole core assembling apparatus for a flow rate adjusting valve for press-fitting a pole core into a sleeve coupled to one side of a body portion of a flow control valve,
A fixing part for supporting a lower portion of the body part such that the sleeve faces upward;
An actuating part provided on the upper side of the fixing part so as to be movable up and down, and having a pole core supporting part for supporting the pole core at a lower part;
A measuring unit installed on the lower side of the fixing unit so as to be movable up and down and being arranged to be able to contact a needle inserted in the body and measuring an upward movement distance of the needle; And
A controller for receiving an upward movement distance of the needle from the measurement unit and determining a working distance of the operation unit;
Wherein the control unit varies the downward movement distance of the actuating unit according to an upward movement distance of the needle. The method according to claim 1,
The operating portion
And a servo press coupled to an upper portion of the pole core support portion so as to numerically control up and down movement of the pole core support portion. The method according to claim 1,
The control unit
Wherein the operating portion is moved downward by a predetermined distance to primarily press the pole core into the sleeve and the secondary press-fitting distance of the operating portion is determined according to an upward movement distance of the needle received from the measuring portion A device for assembling a pole core of a flow control valve. The method of claim 3,
The control unit
And wherein when the moving distance of the needle received from the measuring unit in the upward direction is within 0.6 +/- 0.015 mm, the pole core press-fitting of the operating portion is further restricted. The method of assembling the pole core assembly of the flow rate control valve according to claim 1,
A first press-fitting step of press-fitting the pole core into the sleeve;
A measuring step of measuring a distance between the armature and the pole core;
A comparison step of comparing the distance value measured in the measuring step with a target value of the distance between the armature and the pole core, and calculating an error value;
A second press-fitting step of selectively press-fitting the pole core according to the error value calculated in the comparing step;
Wherein the flow control valve includes a plurality of flow control valves. 6. The method of claim 5,
The first indentation step
And moving the operating part to a predetermined distance to press the pole core into the sleeve. 6. The method of claim 5,
The measuring step
And the moving distance of the needle is determined as a distance between the armature and the pole core. 6. The method of claim 5,
The comparing step
Wherein the second indentation step is performed when the target value is 0.6 +/- 0.015 mm and the distance value measured in the measuring step is measured to be greater than the target value. . 9. The method of claim 8,
The second indentation step
Wherein the pole core is press-fitted into the pole core by a distance corresponding to the error value when the distance value measured in the measuring step is measured to be larger than the target value.

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