KR101482410B1 - Wire welding apparatus - Google Patents

Abstract

A wire bonding apparatus is disclosed. One embodiment of the present invention is to quickly and accurately bond and correct the wire to the wire fixing positions of the same or different sized workpieces in the wettability test process to ensure precise measurement and reproducibility, as well as to reduce the time and manpower required for re- The present invention provides a wire bonding apparatus which can easily perform wetting tests according to the size of a material. A material aligning part provided on the support and arranged to align a material to which the wire is joined; A wire supply unit provided to supply a wire coupled to the work; And a joint provided to weld the wire supplied from the wire supplying unit to the work.

Description

[0001] WIRE WELDING APPARATUS [0002]

The present invention relates to a wire bonding apparatus used for measuring the wetting force between various molten metals and steel sheets, and more particularly, to a wire bonding apparatus for measuring the wet strength of various high-strength and high-purity steels for automobiles, pretreatment of plating, annealing conditions, The present invention relates to a wire bonding apparatus for bonding wires to be bonded to workpieces of different sizes.

When the processed material (1) is immersed in the molten metal to a certain depth, a constant force is applied to the material (1), and the magnitude of this force is determined by the partial stress of the material and the wetting force of the molten metal.

The wettability test uses the measured surface tension and the front and back contact angles as an index to calculate the wetting force generated in various molten metals and materials in the heat treatment simulation and reducing atmosphere of automotive high strength steel.

That is, the wettability test is used for setting the optimal operating conditions such as wettability measurement of high strength / high processability steel for automobile, pretreatment of plating, annealing condition, plating bath composition and plating condition.

Wetting test is performed by bonding a wire (eg, TC wire (2)) to the surface of a processed material (1) having a predetermined size. (1), a deviation occurs in the measured value depending on the position of the bonded TC line (2).

Particularly, in the case of the material (1) having different lengths and widths, the deviation of the measured values is more marked according to the position of the TC line (2) to be assembled. Therefore, the reliability problem And it is difficult to obtain reproducibility with the above.

In this way, the deviation of the measured values in the wettability test process of the same size or different size of material causes repetitive time and manpower waste due to frequent retest as well as reliability problem of experimental data.

In the conventional wetting test, the TC line (2) is bonded to the workpiece (1) processed to a certain size by setting the measurement conditions in the experimental apparatus. At this time, in the method of joining the TC line 2 to the surface of the work 1, the work 1 is placed on the jig 3, and the work is manually bonded using a welding machine (not shown).

Next, when the work 1 to which the TC line 2 is bonded falls and touches the molten metal, a contact signal between the work 1 and the molten metal is outputted through the TC line 2. On the other hand, the work 1 is immersed up to the depth set in the controller. The material automatically stops when it reaches the set depth of the deposit.

Time is measured when the material (1) reaches the depth of contact with the molten metal or reaches the set depth of the molten metal. After the set immersion time has elapsed, the material is raised to terminate the measurement. As shown in FIG. 2, The data P1, P2, and P3 are displayed on the screen.

On the other hand, the data (P1, P2, P3) measured during the wetting test procedure are deviated from each other in the experiment, and the deviation of the measured values is caused by the joint deviation of the TC line (2) It is known to occur. As described above, the data (P1, P2, P3) measured by using the manually connected TC line (2) deviates from each other in the experiment, so that it can not take an accurate value and there is a problem about the reliability of the measured value do.

As described above, in the conventional method of welding the TC to the work surface 1, since the worker fixes the test specimen by hand and attaches the TC line 2 to the surface of the work 1 by using a welding machine, ), It is difficult to attach the TC line (2) to the precise center of the workpiece. Therefore, there is a problem that when the test of wettability is performed, data is deviated each time the test is performed and accurate data can not be obtained. If there is a risk of a safety accident and the left and right centers of the TC line (2) and the material (1) can not be precisely aligned, there is a problem that the TC line (2) and the material (1) are short-circuited.

In one embodiment of the present invention, the wire can be quickly and precisely bonded and fixed at the fixed position of the TC wire of the same or different sized workpieces in the wetting test process to ensure precise measurement and reproducibility, as well as the time and manpower required for re- And it is an object of the present invention to provide a wire bonding apparatus which can facilitate a wettability test according to the size of a material.

A wire bonding apparatus according to an embodiment of the present invention includes a body having a support; A material aligning part provided on the support and arranged to align a material to which the wire is joined; A wire supply unit provided to supply a wire coupled to the work; And a joining portion provided so as to join the wire supplied to the work from the wire supplying portion, wherein the work aligning portion is provided at one side of the support and has a fixing portion on which the work is seated, And an aligning unit that presses the work so that the workpiece placed on the stationary portion is aligned with the center portion, wherein the aligning unit includes at least one shaft member provided to the stationary portion in the widthwise or lengthwise direction of the workpiece, And at least one guide plate which moves in association with the member and presses the horizontal or vertical surface of both sides of the work, and the fixing unit includes a fixing unit body in which the shaft member is rotatably installed, And a cover plate provided to cover an upper portion of the main body and formed with guide grooves for guiding movement of the guide plate .

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In addition, the shaft member may have a helical portion inclined in different directions with respect to a center portion thereof, and the guide plate may be coupled to both sides of the center portion of the shaft member.

In addition, the alignment unit may include a motor provided on one side of the fixing unit and coupled to rotate the shaft member.

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The wire supplying unit may include a supplementary fixing unit installed at one side of the supporting table and a wire storing unit rotatably provided at the auxiliary fixing unit and wound with the wire.

The wire supplying unit may include an auxiliary motor provided on one side of the auxiliary fixing unit and connected to rotate the wire storing unit.

In addition, the auxiliary fixing portion may be provided to face the fixing base with reference to the supporting base, and the supporting base may have a through-hole passing through between the auxiliary fixing portion and the fixing base.

In addition, the wire supplying unit may include a supply unit for guiding a wire supplied from the wire storing unit to a junction of the work.

The supply unit may include a supply guide provided on one side of the auxiliary fixing unit to extend through a first actuator and having grooves for moving the wire therein, And a fixing cover for fixing the wire inserted in the groove.

The joining portion is provided at a lower portion of the main body and is in close contact with a bottom surface of the workpiece, and a lower electrode portion is provided at an upper portion of the main body to be movable up and down via a third actuator, And an upper electrode unit for welding the workpiece and the wire.

The apparatus may further include a sensor unit for detecting that the wire supplied from the wire supplying unit is positioned at the wire fixing position.

For example, the sensor unit may be rotatably provided on one side of the upper electrode unit via a fourth actuator so as to be rotated to the lower side when the wire is supplied to sense the supply of the wire, And can be rotated upward when positioned at the wire fixing position.

In addition, the wire may include a TC wire (ThermoCouple wire).

According to the embodiment of the present invention, in the test of wettability using workpieces classified by the same or size, it is possible to ensure reproducibility as well as accuracy of experiment through simple and quick wire bonding at the same position at all times. In addition, the quality of the experiment can be improved by improving the precision in the wettability test, and the reliability of the experiment can be improved by ensuring the reproducibility. In addition, the present embodiment can reduce the human and material waste of repeated experiments to ensure precision and reproducibility by securing precision and reproducibility in the wettability test process using the workpiece.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a combined state of a material and a wire for a wettability test according to the prior art. FIG.
Figure 2 is data measured by wetting experiments according to the prior art.
3 is a perspective view showing a wire bonding apparatus according to an embodiment of the present invention;
4 is a partially enlarged perspective view of a work aligning portion and a joint portion of a wire bonding apparatus according to an embodiment of the present invention;
5 is an enlarged perspective view of a wire supplying portion of a wire bonding apparatus according to an embodiment of the present invention;
6 is a perspective view of a wire bonding apparatus according to an embodiment of the present invention before a wire is supplied.
FIG. 7 is a perspective view of a sensor unit of a wire bonding apparatus according to an embodiment of the present invention in which wires are sensed. FIG.
8 is a perspective view of a sensor unit of a wire bonding apparatus according to an embodiment of the present invention in a retracted state.
9 is a perspective view showing a state where a joint portion of a wire bonding apparatus according to an embodiment of the present invention welds a work and a wire.
FIG. 10 shows data measured by a wettability test using a wire bonding apparatus according to an embodiment of the present invention. FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

FIG. 3 is a perspective view illustrating a wire bonding apparatus according to an embodiment of the present invention, FIG. 4 is a partially enlarged perspective view of a work aligning unit and a bonding unit of the wire bonding apparatus according to an embodiment of the present invention, Is an enlarged perspective view of a wire supplying unit of a wire bonding apparatus according to an embodiment of the present invention.

Referring to FIGS. 3 to 5, the wire bonding apparatus 100 of the present embodiment may include a body 110 having a support 112.

The support base 112 is provided on the bottom plate 114 installed on the work surface and the upper plate 116 may be installed on the support base 112.

In addition, the supporting table 112 may be provided with a material aligning portion 130 for aligning the work 1 to which the wire 2 is joined.

For example, in this embodiment, a TC wire (ThermoCouple wire) for measuring the temperature of the wire 2 may be used. Although the wire 2 is described as using the TC wire in the present embodiment, the wire 2 is not limited to the TC wire, and various objects to be welded such as various cables can be used. It should be noted, however, that in the present embodiment, for convenience of explanation, the TC wire 2 is described as an example of the wire 2.

The material aligning unit 130 may include a fixing unit 132 installed at one side of the support stand 112. The fixing portion 132 may be provided with a space in which the work 1 is seated.

The fixing portion 132 may include an aligning unit 140 for aligning the material 1 seated on the fixing portion 132 at a central portion thereof. The aligning unit 140 can press the material 1 and move the material 1 and align the material 1 at the center of the fixing part 132. [

To this end, the alignment unit 140 may include at least one shaft member 142, 143 provided in the transverse direction or the longitudinal direction of the work 1 to the fixing portion 132. [

In addition, the shaft members 142 and 143 may include at least one guide plate for pressing and moving the horizontal or vertical surfaces of both sides of the work 1.

For example, the shaft members 142 and 143 are formed with helical portions inclined in different directions with respect to the center portion, and the guide plates 144 and 145 can be coupled to the shaft members 142 and 143 at both sides of the center portion.

Therefore, the guide plates 144 and 145 can be pushed or pulled along the inclined spiral portions of the shaft members 142 and 143 during rotation of the shaft members 142 and 143. In this process, Or the vertical surface of the work 1 can be aligned with the central portion of the fixing portion 132 by pressing the vertical surface.

The aligning unit 140 may be provided with motors 146 and 147 associated with the shaft members 142 and 143 at one side of the fixing portion 132. By operation of the motors 146 and 147 The shaft members 142 and 143 are automatically rotated to align the work 1 with the central portion of the fixing portion 132. [

In this embodiment, the work 1 can be seated on the upper surface of the fixing portion 132. [ The fixing member 132 may include a fixed body 134 having a predetermined space formed therein and the shaft members 142 and 143 may be rotatably installed inside the fixed body 134 .

Further, a cover plate 136 covering the space formed in the fixing portion 132 may be provided on the upper portion of the fixing portion main body 134. Thus, the material 1 is substantially seated on the top of the cover plate 136. [

The guide plates 144 and 145 may be installed to move the work 1 through the cover plate 136. The guide plates 144 and 145 may be provided on the cover plate 136 so as to cover the cover plate 136, A guide groove 137 may be formed to penetrate the guide groove 137. The guide grooves 137 can be formed through the guide plates 144 and 145 so that they guide the movement of the guide plates 144 and 145.

On the other hand, the TC line 2 to be coupled can be automatically supplied to the upper portion of the work 1 aligned with the work aligner 130.

For this purpose, in the present embodiment, it may include a wire supplying part 150 for supplying a TC line 2 coupled to the work 1.

The wire feeder 150 may include an auxiliary fixing unit 152 installed on one side of the support base 112.

The wire holding portion 154 is wound around the support 153 extending from the auxiliary fixing portion 152. The auxiliary holding portion 152 is provided with a wire holding portion 154 in which the TC wire 2 is wound and stored. And can be rotatably installed.

The wire holding part 154 is formed in the form of a bobbin having a jaw member that is configured to wind the TC wire 2 on the rotating shaft and to block the TC wire 2 from flowing down .

On the other hand, the wire supplying section 150 can be supplied with the TC line 2 manually, but preferably, the TC line 2 is automatically supplied to the TC line connecting position of the work 1.

To this end, the wire feeder 150 may include an auxiliary motor 156 coupled to rotate the wire holder 154. It is preferable that the auxiliary motor 156 is provided at one side of the auxiliary fixing part 152, for example, at one side of the support 153, and is connected to the rotation shaft of the wire storage part 154.

The auxiliary fixing portion 152 of the wire feeding portion 150 may be provided on one side of the fixing portion 132. The auxiliary fixing portion 152 may be provided on one side of the fixing portion 132, (Not shown).

A through groove 113 may be formed in the support base 112 between the auxiliary fixing part 152 and the fixing part 132. The wire feeding part 150 and the material alignment part 130 communicate with each other. The TC line 2 supplied from the wire supplying unit 150 can be supplied to the upper portion of the work 1 through the through hole 113 and through the support table 112 and seated on the work aligning unit 130.

The wire supplying section 150 may include a supplying unit 160 for guiding the TC line 2 supplied to the wire storing section 154 to the joining position of the work 1. [

This feeding unit 160 can be provided in a stretchable state via a first actuator (not shown) on one side of the auxiliary fixing portion 152. [

The supply unit 160 may include a supply guide 162 having a groove through which the TC line 2 moves, and the first actuator may extend one side of the supply guide 162 so that the TC line 2 Can be guided to be supplied to the material aligning part 130 through the through groove 113.

The supply unit 160 may include a fixing cover 164 which is coupled to one side of the supply guide 162 and fixes the TC line 2 inserted in the groove so as not to move.

The fixed cover 164 is rotatably installed at one side of the feed guide 162 via a hinge member and is fixed to the fixed cover 164 in cooperation with the operation of the second actuator 166 associated with the feed guide 162 The TC line 2 inserted in the groove can be fixed or the TC line 2 can be disengaged from the groove.

The TC wire 2 supplied from the wire supplying unit 150 to the bonding position with the work 1 can be welded and joined to the work 1 for bonding. A welding portion 170 for welding the work 1 and the TC line 2 to each other.

For example, in this embodiment, the bonding portion 170 includes a lower electrode portion 172 provided at a lower portion of the main body 110 and an upper electrode portion 174 provided at an upper portion of the main body 110, The work 1 and the TC line 2 can be joined as the work 1 and the TC line 2 are welded between the electrode portion 172 and the upper electrode portion 174.

The lower electrode part 172 is provided on the bottom plate 114 provided at the lower part of the supporter 112. The lower electrode part 173 of the lower electrode part 172 is fixed to the work 1 and the TC line 2 And is placed in close contact with the lower surface of the position.

The upper electrode part 174 is provided on the upper plate 116 provided on the upper part of the supporter 112. The upper electrode part 174 is brought into close contact with the upper surface of the work 1 at the TC line and electrically connected to the lower electrode part 172 The material (1) and the TC line (2) can be welded.

The upper electrode portion 174 can be provided so as to be able to be elevated so that the TC line 2 can be positioned at the coupling position with the work 1. [ That is, the upper electrode portion 174 includes a movable electrode portion 175 including a third actuator (not shown) below the upper plate 116, and a fixed electrode (not shown) provided below the movable electrode portion 175. [ Section 176. [0033] The upper electrode 177 may be positioned on the fixed electrode portion 176.

The upper electrode 177 may be lifted or lowered as the third actuator of the movable electrode 175 expands or contracts.

The upper electrode portion 174 is lifted and positioned in the process of supplying the work 1 and the TC line 2 and is lowered when the work 1 and the TC line 2 are coupled to each other, 2).

The wire bonding apparatus 100 of the present embodiment can supply the TC line 2 such that the TC line 2 supplied from the wire supply unit 150 is accurately positioned at the TC line 2 supply position of the work 1 A sensor unit 180 for sensing the supply of the TC line 2 may be provided.

For example, the sensor unit 180 may be provided on one side of the upper electrode portion 174. [ The sensor unit 180 may be installed on one side of the fixed electrode unit 176 of the upper electrode unit 174 via a hinge member.

A fourth actuator 182 may be provided between one side of the sensor unit 180 and one side of the upper electrode unit 174, that is, between the fixed electrode unit 176. Through the operation of the fourth actuator 182, The sensor unit 180 is rotated.

The sensor unit 180 may be rotated downward as the fourth actuator 182 is extended when the TC line 2 is supplied to the fixed position with the work 1. [ The sensor unit 180 recognizes that the TC line 2 is supplied to the fixed position with respect to the work 1 when the TC line 2 is supplied and touches the sensor unit 180, 2 can be stopped.

At this time, the joining portion 170 can be raised to a predetermined height for rotation of the sensor unit 180, so that the sensor unit 180 can be smoothly rotated without interfering with the work 1.

When the supply of the TC line 2 is stopped, the fourth actuator 182 is rotated upward as the first actuator 182 contracts. Thereafter, the movable electrode unit 175 is lowered by the extension of the third actuator of the upper electrode unit 174 And the upper electrode 177 may be in close contact with the TC line 2 and the work 1 for welding.

FIG. 6 is a perspective view of a wire bonding apparatus according to an embodiment of the present invention before a wire is supplied, and FIG. 7 is a perspective view of a sensor unit of a wire bonding apparatus according to an embodiment of the present invention, to be. FIG. 8 is a perspective view of a sensor unit of a wire bonding apparatus according to an embodiment of the present invention in a retracted state. FIG. 9 is a perspective view of a wire bonding apparatus according to an embodiment of the present invention. FIG.

6 through 9 sequentially illustrate the operation of the wire bonding apparatus 100 according to an embodiment of the present invention. Referring to the operation of the wire bonding apparatus 100 of the present embodiment, .

First, when the work 1 is placed on the cover plate 136 of the alignment unit 140, the motors 146 and 147 of the alignment unit 140 rotate the shaft members 142 and 143. At this time, the guide plates 144 and 145 connected to both sides of the shaft members 142 and 143 are pinched and the work 1 is aligned with the TC line joining position, for example, the center portion of the cover plate 136.

At this time, the lower electrode 173 may be kept in a state of being closely attached to the lower part of the work 1 at a position corresponding to the TC line joining position.

Then, when the work 1 is aligned, the TC line 2 is supplied from the wire feeder 150.

The TC line 2 is unwound from the wire storage unit 154 and supplied as the auxiliary motor 156 associated with the wire storage unit 154 rotates.

At this time, the TC line 2 is inserted into the groove formed in the supply guide 162 of the supply unit 160, and the fixed cover 164 of the supply guide 162 is rotated through the second actuator 166 Fix the TC line (2) to the groove. At the same time as the TC line 2 is released, the supply guide 162 passes through the through-hole 113 of the support base 112 by the operation of the first actuator (not shown) do.

On the other hand, the upper electrode portion 174 of the bonding portion 170 is in a state in which the sensor unit 180 is lowered so as to be adjacent to the TC line bonding position.

When the TC line 2 feed unit 160 moves the TC line 2 to the TC line joining position, the TC line 2 contacts the sensor unit 180, The supply of the TC line 2 is detected.

Next, the upper electrode portion 174 raises the movable electrode portion 175, and the sensor unit 180 rotates upward by the operation of the fourth actuator 182. [

The upper electrode portion 174 lowers the movable electrode portion 175 again so that the upper electrode 177 is brought into close contact with the work 1 and the TC line 2.

When the upper electrode 177 is brought into close contact with the work 1 and the TC line 2 as the current is supplied together with the lower electrode 173 located below the work 1, (2) are welded and joined.

10 is data measured by a wettability test using a wire bonding apparatus according to an embodiment of the present invention.

Referring to FIG. 10, when the work 1 and the TC wire 2 are joined by the wire bonding apparatus 100 of the present embodiment, the wettability test can be performed.

In the wetting test, the material (1) is contacted with the molten metal or time is measured when the set depth of the molten metal is reached, and the material (1) is raised to terminate the measurement after the set immersion time, (P1, P2, P3) are displayed on the screen.

At this time, the produced data (P1, P2, P3) are hardly deviated. This is because the joining position of the material 1 and the TC line 2 is always kept constant. Therefore, the accuracy of the experiment and the reproducibility are improved through the fast TC line (2) bonding using the wire bonding apparatus 100 of the present embodiment The quality of the experiment can be improved by improving the precision, the reproducibility can be secured, and the reliability of the experiment can be increased accordingly.

It is to be understood that within the scope of the technical idea included in the specification and drawings of the present invention, the description of the present invention, the present embodiment, and the drawings attached hereto are only a part of the technical idea included in the present invention, The present invention is not limited to the above-described embodiments, and various modifications and changes may be made without departing from the scope of the present invention.

100: wire bonding apparatus 110:
112: support member 113: penetrating groove
114: bottom plate 116: top plate
130: material aligning section 132:
134: fixture body 136: cover plate
140: alignment unit 142, 143:
144, 145: guide plates 146, 147: motor
150: wire feeder 152:
153: Support 154: Wire storage section
156: auxiliary motor 160: supply unit
162: supply guide 164: fixed cover
166: second actuator 170:
172: lower electrode part 173: lower electrode
174: upper electrode part 175: movable electrode part
176: fixed electrode portion 177: upper electrode
180: sensor unit 182: fourth actuator

Claims (15)

A body having a support; A material aligning part provided on the support and arranged to align a material to which the wire is joined; A wire supply unit provided to supply a wire coupled to the work; And a joint provided to weld the wire supplied from the wire supplying unit to the work,
Wherein the material aligning portion includes a fixing portion provided on one side of the support and on which the material is placed and an alignment unit provided on the fixing portion to press the material so that the material seated on the fixing portion is aligned with the center,
The aligning unit includes at least one shaft member provided to the stationary portion in a transverse direction or a longitudinal direction of the workpiece, at least one shaft member which moves in association with the shaft member and presses the transverse or longitudinal surface of both sides of the workpiece Including a sign board,
Wherein the fixing portion includes a fixed portion main body having the shaft member rotatably disposed therein and a cover plate provided to cover the upper portion of the fixed portion main body and formed with guide grooves for guiding movement of the guide plate, .
delete delete The method according to claim 1,
Wherein the shaft member has a spiral portion inclined in different directions with respect to a center portion thereof,
And the guide plate is coupled to both sides of a central portion of the shaft member.
The apparatus of claim 1, wherein the alignment unit
And a motor provided on one side of the fixing unit and linked to rotate the shaft member.
delete The wire feeding apparatus according to any one of claims 1, 4, and 5,
An auxiliary fixing part provided on one side of the support,
And a wire holding portion rotatably provided to the auxiliary fixing portion and wound with the wire wound thereon.
[8] The apparatus of claim 7,
And an auxiliary motor provided at one side of the auxiliary fixing part and connected to rotate the wire storing part.
[8] The apparatus of claim 7, wherein the auxiliary securing portion is disposed to face the securing portion with respect to the support,
And the supporting base is provided with a through-hole penetrating between the auxiliary fixing portion and the fixing portion.
[8] The apparatus of claim 7,
And a supply unit for guiding the wire supplied from the wire storage unit to the junction of the work.
11. The apparatus of claim 10,
A supply guide provided on one side of the auxiliary fixing part in such a manner as to extend through a first actuator and having a groove through which the wire moves,
And a fixing cover which is provided at one side of the supply guide and rotates through the second actuator and fixes the wire inserted in the groove.
The connector according to any one of claims 1, 4 and 5,
A lower electrode portion provided at a lower portion of the main body and brought into close contact with a bottom surface of the workpiece,
And an upper electrode part provided on an upper portion of the main body so as to be able to move up and down via a third actuator to closely contact the upper surface of the wire bonding position of the workpiece and weld the workpiece and the wire.
The method of claim 12,
And a sensor unit for sensing that the wire supplied from the wire supplying unit is located at the wire bonding position.
14. The sensor unit according to claim 13,
The upper electrode part is rotatably provided on one side of the upper electrode part via a fourth actuator and is rotated to the lower side when the wire is supplied to sense the supply of the wire. The wire bonding apparatus being rotated upward. The method according to any one of claims 1, 4, and 5,
Wherein the wire comprises a TCo wire.

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