KR20110108802A - Preventing spatter device having jig for welding test piece in electric resistance spot welding machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spatter prevention device for an electric resistance spot welder having a jig, and is formed so as to be inserted into the upper electrode and the lower electrode of the electric resistance spot welder, respectively, in opposite directions. A body portion divided into upper and lower portions each having an opening surface concave inward, an extension portion extending from the outer periphery of the end of the body portion, and an opening surface of the light shielding portion and the lower body portion formed on the outer circumferential surface of the body portion; It has a configuration that includes a jig portion that is mounted within the seated welding specimen to linearly align the welded specimen, thereby protecting the operator from the spatter generated during welding, as well as a separate jig to mount or fix the welded specimen is not required. Therefore, workability is improved.
In addition, the spatter prevention apparatus according to the present invention is a transparent heat-resistant strengthening material is used to facilitate the close observation of the welding process, by additionally applying a coating film having a light blocking function to effectively protect the eyesight of the operator from sparks.

Description

Preventing spatter device having jig for welding test piece in electric resistance spot welding machine}

The present invention relates to a device for preventing spatter of an electric resistance spot welder, which protects the operator from spatter generated during the work, and does not require a separate dedicated jig for the purpose of mounting and fixing the welding specimen during the work. The present invention relates to a sputtering prevention device having a welded specimen jig capable of improving the properties.

In addition, the present invention can effectively protect the eyesight of the operator from the spark generated during the work, and also relates to a technique for spatter prevention device provided with a welding specimen jig capable of close observation of the welding process without a separate protective device.

In general, in the use of the electric resistance spot welder, the welding specimen is prepared by welding the welding specimen by hand or by mounting it on the lower electrode of the electric resistance spot welder using a dedicated jig manufactured separately.

At this time, as the upper body moves up and down, the upper electrode presses the welding specimen seated on the lower electrode, and resistance heat is generated as the current flows between the upper electrode and the lower electrode, and welding proceeds.

In this case, spatters are generated due to excessive rise of the state of the material of the welding specimen, the fixed state, or the set current value.

However, excessive spatter may cause welding defects, such as loss of material and reduced thickness of the welded part, and also cause serious problems such as causing burns to workers or contaminating the workplace.

It is a technical object of the present invention to provide an apparatus for preventing spatter of an electric resistance spot welder that can effectively protect an operator from spatters during electric resistance spot welding (especially when using an electric resistance spot welder for research).

In addition, the present invention does not require a separate jig equipment for the purpose of mounting and fixing the welding specimen during the electric resistance spot welding, providing a spatter prevention device having a welding specimen jig that can improve the convenience of work Make it a technical task.

In addition, the present invention can effectively protect the operator's eyesight from sparks generated during operation, and to provide a spatter prevention device having a welding specimen jig capable of close observation of the welding process without a separate protective device as a technical problem. .

According to the idea of the present invention, the upper and lower body portions are formed so as to be inserted into the upper and lower electrodes of the electric resistance spot welder, respectively, and having an opening surface recessed inward in opposite directions; An extension part formed to extend from the outer periphery of the upper and lower body parts so as to face each other; An optical shield formed on an outer circumferential surface of the upper and lower body parts; And a jig portion mounted in the opening surface of the lower body portion to seat the weld specimen so as to align the weld specimen in a straight line. 2.

In addition, the light shielding portion, it is preferable that the heat-resistant film-like member having a light blocking function is formed on the outer peripheral surface of the body portion.

Here, the body portion and the extension portion, it is preferable to have a shape surrounding the entire area of the welded specimen seated and aligned on the jig portion.

In addition, the body portion may have a conical or hemispherical outer shape.

And the body portion preferably has a material made of transparent heat-resistant glass or heat-resistant reinforced resin.

The extension part may have a bellows shape that can be enlarged or reduced in the up and down directions corresponding to the size of the weld specimen seated and aligned with the jig part.

And it is good that the said extension part is a soft material which has a heat resistance characteristic.

At this time, it is preferable that the extension portion is detachable to the body portion, respectively.

In addition, the body portion and the extension, the size and shape is preferably determined within the range that does not interfere with the movement of the upper electrode and the lower electrode of the electric resistance spot welder.

Meanwhile, according to another idea of the present invention, the upper body portion and the lower body portion are formed to be inserted on the upper electrode and the lower electrode of the electric resistance spot welder, respectively, and have opening faces recessed inward in opposite directions, respectively. ; An extension part formed to extend from each other at outer ends of the upper and lower body parts; And light shielding portions formed on outer peripheral surfaces of the upper body portion and the lower body portion, respectively. A pair of cross beams disposed in contact with both sides of the welded specimen seated on the upper side of the lower body part and supporting a linear alignment of the welded specimen; A specimen bed that is connected between the pair of cross beams and is stretched in a lateral direction according to the width of the weld specimen to adjust a spacing between the pair of cross beams and provide a seating surface to the weld specimen; A pair of support ends extending downward from each of the pair of cross beams and mounted in close contact with an opening surface of the lower body part; And a jig portion including a lower electrode fastening hole formed between the support ends and having a lower electrode fastening hole inserted through the lower electrode at a center thereof. The sputtering prevention apparatus of the electric resistance spot welding machine provided with a jig can be provided.

In this case, it is preferable that the cross section, the specimen bed, the support end, and the lower electrode fastener contact the welding specimen and the lower electrode.

In addition, the pair of cross beams may be provided with a tick mark for checking the overlap length of the weld specimen.

In this case, the light shielding portion, it is preferable that the heat-resistant film-like member having a light blocking function is formed on the outer peripheral surface of the upper body portion and the lower body portion.

In addition, the upper body portion, the lower body portion and the extension portion, it is preferable that the shape surrounding the entire area of the welded specimen seated and aligned on the jig portion.

The upper body portion and the lower body portion may have a conical or hemispherical outer shape.

In addition, the upper body portion and the lower body portion may have a material made of transparent heat resistant glass or heat resistant reinforced resin.

In this case, it is preferable that the extension portion has a bellows shape that can be enlarged or reduced in the up and down directions corresponding to the size of the welded specimen that is seated and aligned with the jig part.

In addition, the extension portion is preferably a flexible material having heat resistance characteristics.

And it is preferable that the extension portion is removable form each of the upper body portion and the lower body portion.

In addition, the upper body portion, the lower body portion and the extension, the size and shape may be determined within a range that does not interfere with the movement of the upper electrode and the lower electrode of the electric resistance spot welder.

According to the spatter prevention apparatus provided with the welding specimen jig of this invention, there exists an effect which can effectively protect an operator from a spatter at the time of electric resistance spot welding (especially when using a resistance electric resistance spot welding machine).

In addition, according to the spatter prevention device provided with a welding specimen jig of the present invention, when the electric resistance spot welding, do not require a separate jig equipment for the purpose of mounting and fixing the welding specimen can improve the convenience of work It works.

In addition, according to the spatter prevention device provided with a welding specimen jig of the present invention, it is possible to effectively protect the eyesight of the operator from sparks generated during operation, and provides an effect capable of close observation of the welding process without a separate protective device.

1 is a conceptual diagram illustrating an embodiment of a spatter prevention device having a welding specimen jig according to the present invention.
Figure 2 is an enlarged perspective view of the jig in the spatter prevention device having a welding specimen jig according to the present invention.
Figure 3 is an operating state diagram for explaining the first operating relationship using an embodiment of a spatter prevention device with a welding specimen jig according to the present invention.
Figure 4 is an operating state diagram for explaining the second operation relationship using an embodiment of a spatter prevention device with a welding specimen jig according to the present invention.
Figure 5 is an operating state diagram for explaining a third operation relationship using an embodiment of a spatter prevention device with a welding specimen jig according to the present invention.

Hereinafter, a preferred embodiment of the sputtering prevention device provided with the welding specimen jig according to the present invention will be described.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. However, the present invention is not limited by the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. In addition, in the following description of the present invention, if it is determined that related related technologies and the like may obscure the gist of the present invention, detailed description thereof will be omitted.

1 is a conceptual diagram illustrating an embodiment of a spatter prevention device having a welding specimen jig according to the present invention. 1 clearly shows only those parts which are characterized in order to conceptually clearly understand the configuration relationship for the preferred embodiment of the present invention, and as a result, various modifications of the drawings are expected and need to be largely limited to the specific forms shown. There is no.

Referring to FIG. 1, the apparatus for preventing spatter of an electric resistance spot welder according to an exemplary embodiment of the present invention may include upper and lower body parts 110 formed on the upper and lower electrodes 30a and 30b of the electric resistance spot welder, respectively. ) And an extension part 120 extending from the upper and lower body parts 110, mounted inside the light shielding part 112 and the lower body part 110 formed on the outer circumferential surface of the upper and lower body parts. It consists of a configuration including a jig unit 130 for aligning the welding specimen (S1, S2).

An upper electrode 20a and a lower electrode 20b are formed in the upper body 10a and the lower body 10b of the electric resistance spot welder, respectively, and at the ends of each of the upper electrode 20a and the lower electrode 20b. The upper electrode 30a and the lower electrode 30b are provided.

Body portion 110 of the present embodiment is a form that can be inserted into the upper electrode 30a and the lower electrode 30b, respectively. That is, the upper body part 110a is inserted into the upper body part 110, and the lower electrode part 30b is inserted into the lower body part 110.

Each of the upper and lower body parts 110 has an opening surface in a direction facing each other.

That is, as can be seen through Figure 1, the upper body portion 110, the outer shape of each can be in the shape of a cone, this shape does not limit the present invention, hemispherical, jar through another embodiment Various shapes, such as a mold and a calabash, may be used.

In addition, the upper and lower body parts 110 may each form an opening surface concave hollow therein, and each opening surface is formed by concave in a direction facing each other.

And the body portion 110 has a material made of transparent heat-resistant glass or heat-resistant reinforced resin.

As will be described in detail later, when the electrical resistance spot welding according to the material characteristics of the body portion 110, the operator can safely observe the entire process of welding, including spatter scattered at a relatively close distance.

Next, the extension 120 will be described.

The extension part 120 in this embodiment is formed to extend to face each other from the open end outer periphery of each of the body parts (110).

The extension part 120 is seated on the jig part 130 together with the body part 110 to transfer the welding specimens S1 and S2 interposed on the upper and lower electrodes 30a and 30b of the electric resistance spot welder. It has a shape that encloses it in a range. This is to prevent the spatter from being released to the outside by the extension part 120 and the body part 110.

As a result, the spatter is wall-attached or a wall collision occurs only in the inner space that can be closed by the extension part 120 and the body part 110, and the external worker is protected from the spatter.

Furthermore, the extension part 120 extends by a predetermined length to face each other along the outer circumference of the body part 110, and further expands to correspond to the size (particularly, height) of the welding specimens S1 and S2. It may be reduced, and may be manufactured to have a bellows shape that is preferably stretchable up and down.

In addition, the extension part 120 may be made of a flexible material that can be elastically expanded or contracted so as to effectively wrap and seal it by considering various shapes of the welding specimens S1 and S2.

However, since a large amount of hot spatter may also be attached to the extension part 120, it is preferable to have heat resistance in the same manner as the body part 110 described above.

As the material of the extension part 120, a synthetic resin having a complex composition of silicone and acrylic having good ductility and heat resistance may be used.

In addition, the extension part 120 may have a structure detachable to the body part 110.

This is to consider the contamination of the extension portion 120 by the spatter when the electrical resistance spot welding is repeatedly performed using the present embodiment, so that the extension portion 120 is severely contaminated to be replaced with a new one For sake.

By replacing and using only the extension part 120 separately from the body part 110, it provides the effect of increasing the durability of the product.

In addition, the body 110 and the extension 120 may have a size and shape that does not interfere with the movement of the upper and lower electrodes 30a and 30b of the electric resistance spot welder.

If the body part 110 and the extension part 120 interfere with the operating range of the upper and lower fuselage bodies 10a and 10b of the electric resistance spot welder required for the work by the size and shape thereof, the welding is performed. This is because the convenience of work can be impaired.

Next, the light shielding unit 112 will be described.

The light shielding portion 112 is formed on the outer circumferential surface of the body portion 110.

That is, the light shielding portion 112 is formed to have a film form or a layer form in all areas along the outer circumference of the upper and lower body portions 110, so that the external exposure of the spark generated when welding is generated. Block it.

In the present exemplary embodiment, the light shielding part 112 has a structure in which a heat resistant film-like member having a light blocking function (for example, a light shielding film) is coated on the outer circumferential surface of the upper and lower body parts 110.

The formation structure of the light shielding portion 112 of this embodiment is exemplary, and the present invention is not limited thereto.

Therefore, through the change of various embodiments, the light shielding portion 112 may be formed through a method such as a coating formed of a synthetic material having a light blocking function.

If the light shielding portion 112 is formed on the transparent body portion 110, the body portion 110 may have a relatively dark tone.

However, by the light shielding portion 112, the operator can observe the generation of spatters at a relatively close distance while protecting the eyesight from the light emission phenomenon due to the spark.

Next, the jig unit 130 will be described.

The jig part 130 is mounted on the inner side of the lower body part 110, that is, the opening surface of the lower body part 110, and is a means for supporting and fixing the weld specimens S1 and S2 in a straight line.

2 is an enlarged perspective view of the jig unit 130 according to the present embodiment. Referring to Figure 2 will be described in detail the jig unit 130 according to an embodiment of the present invention.

As shown in FIG. 2, the jig part 130 includes a pair of cross beams 132, a specimen bed 134 formed between the cross beams 132, and a lower side from the cross beams 132. It consists of a configuration comprising a pair of support end 136 formed to extend to the lower electrode fastener 138 formed between the support end 136.

The cross beam 132 is disposed across the upper side of the lower body portion (110 in FIG. 1), and is a pair of beam-shaped members formed spaced apart from each other by a predetermined interval.

In FIG. 2, the cross beam 132 is illustrated as having a rectangular cross-sectional shape. However, the cross beam 132 is merely an exemplary shape for description of the present exemplary embodiment, and a circular cross section, a rhombus cross section, and the like may be modified through various embodiments. It may have the same other shape.

The pair of cross beams 132 are disposed in contact with both sides of the welded specimen (S1, S2 in FIG. 1) to be seated and fixed by the jig part 130 of the present embodiment. And it supports the linear alignment of the welding specimen (S1, S2 in Figure 1) so that the welding of the welding specimen (S1, S2 in Figure 1) proceeds stably and accurately.

In addition, a scale mark (not shown) may be provided on the upper surface of the cross beam 132.

Although not separately shown, the scale allows the operator to accurately grasp the overlapping length between the welded specimens (S1 and S2 in FIG. 1), which improves the precision of welding.

The cross beams 132 may be made of the same material as a whole, or may be partially made of different materials.

However, all the areas of the cross beam 132 that are in contact with the welded specimens (S1 and S2 in FIG. 1) are all made of the same material as well as an insulator instead of a conductor, even when partially made of different materials. It must be made. And despite the relatively small size and shape, in order to effectively support the welded specimen (S1, S2 in Figure 1) it is good to be made of a good structural strength material.

The specimen bed 134 is formed between the cross beams 132 and is a member that provides a seating surface to the weld specimen (S1, S2 in FIG. 1).

And the specimen bed 134 is stretched in the lateral direction according to the width of the welded specimen (S1, S2 in Figure 1), the weld specimen (the upper surface of the specimen bed 134 having such a lateral stretch control structure ( In FIG. 1, S1 and S2 are stably seated.

And welded specimens (S1, S2 in Figure 1) is linearly aligned and supported by the cross beam 132 formed to be connected to both sides of the specimen bed 134.

Since the specimen bed 134 is a welded specimen (S1, S2 in Figure 1) is seated on the top, the material is preferably made of an insulator rather than a conductor.

In addition, the specimen bed 134 preferably has a material having a good structural strength so as to stably support the weld specimen (S1 and S2 in FIG. 1).

The support end 136 extends downward from each of the pair of cross beams 132 and is a member mounted in close contact with the opening surface of the lower body part (110 in FIG. 1).

That is, the welding specimens (S1 and S2 in FIG. 1) may be stably fixed and supported by the specimen bed 134 formed between the pair of cross beams 132 and the cross beams 132, but the cross beams are supported. In order to effectively secure the 132 to the lower body portion (110 in Figure 1), it is preferable that an additional support aggregate is formed between the cross beam 132 and the lower body portion (110 in Figure 1). It is the support 136 to play this role.

In FIG. 2, the support end 136 is illustrated as being composed of a trapezoidal aggregate having a circular cross-sectional shape and a reinforcement aggregate formed therebetween, but this shape is merely an exemplary shape for describing the present embodiment.

Therefore, various shapes in which the crossbeam 132 can be effectively supported on the opening surface of the lower body part (110 in FIG. 1) through variations of various embodiments may be considered to belong to the scope of the present invention.

The support end 136 may be made of the same material as a whole, or may be partially made of a different material.

However, it is preferable that all areas of the support end 136 that are in contact with the weld specimens (S1 and S2 in FIG. 1) may be made of an insulator.

In addition, the support end 136 supports both the cross-beam 132 and the specimen bed 134 for supporting the welded specimen (S1, S2 in Figure 1) compared to the diameter and shape of the cross section, the material having good structural strength It is good to be made with.

The lower electrode fastener 138 is a member connected between the pair of support ends 136 and fitted to the lower electrode 30b in FIG.

That is, a lower electrode fastening hole 139 is provided at the center of the lower electrode fastening hole 138, and the lower electrode 30b in FIG. 1 is inserted through the lower electrode fastening hole 139.

Therefore, it is preferable that the size of the lower electrode fastening hole 139 is determined corresponding to the diameter of the lower electrode (30b in FIG. 1) of the electric resistance spot welder.

In addition, the lower electrode fastener 138 may have a form that can be stretched in a lateral direction corresponding to the stretch control of the specimen bed 134 according to a structural feature connected between the pair of support ends 136.

The lower electrode fastener 138 may be made of the same material as a whole, or may be partially made of a different material.

Accordingly, the entire area of the lower electrode fastener 138 may be an insulator, but when the material is different, the lower electrode fastening hole 139 through which the lower electrode 30b is inserted is inserted. It is preferable that only the peripheral area be made of an insulator.

Next, an operation relationship according to a preferred embodiment of the present invention will be described.

3, 4 and 5 are operating state diagrams for explaining the first, second, third operating relationship of the spatter prevention device of the electric resistance spot welder with a welding specimen jig.

In FIG. 3, the extension part 120 is formed on the upper electrode 30a and the lower electrode 30b, respectively, and the lower body part 110 may be inserted into the upper electrode 30a and the lower electrode 30b.

Up to now, as the working state before the welding specimens (S1, S2) and still start welding, first, the upper and lower body portion 110 is only in the working state.

In addition, it may be confirmed that the jig unit 130 for supporting the welding specimens S1 and S2 is not mounted to the lower electrode 30b. However, in the drawings, it is difficult to check, but the light shield (not shown) is formed on the outer circumferential surface of the upper, lower body portion 110.

4 is a next operation state of the operation state described in Figure 3, it can be seen that the jig unit 130 according to the preferred embodiment of the present invention is mounted on the opening surface of the lower body portion 110.

In this working state, the jig part 130 is mounted on the lower body part 110 and the welding specimens S1 and S2 are prepared. In addition, the extension part 120 is in a state before being extended and adjusted upward and downward in correspondence with the sizes of the welding specimens S1 and S2.

FIG. 5 is a next operating state of the operating state described in FIG. 4, wherein the welding specimens S1 and S2 are positioned by the jig unit 130 through which the lower electrode 30b is inserted and mounted to the lower body portion 110. You can check the fixed state.

The welding specimens S1 and S2 may be inserted between the upper electrode 30a and the lower electrode 30b to be in a state immediately before being energized.

In addition, it can be seen that the body portion 110 and the extension portion 120 completely wrapped the welding specimen (S1, S2). That is, it can be seen that the extension part 120 is enlarged to correspond to the size of the weld specimens S1 and S2.

Thereafter, when energization occurs between the upper electrode 30a and the lower electrode 30b, the welding specimens S1 and S2 are welded. At this time, welding is more stably performed by the jig part 130 supporting and fixing the welding specimens S1 and S2.

And as well as checking the amount of spatter generated, the entire welding process can be safely observed at a close distance through the light shield (not shown) coated, the lower body 110. This enables more effective electric resistance spot welding.

In the above, a preferred embodiment of the apparatus for preventing spatter of an electric resistance spot welder equipped with a welding specimen jig according to the present invention has been described.

It is to be understood that the above-described embodiments are illustrative in all aspects and should not be construed as limiting, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

S1, S2: Welding Specimen
10a: upper fuselage 10b: lower fuselage
20a: upper electrode 20b: lower electrode
30a: upper electrode 30b: lower electrode
110: body 112: light shield
120: extension 130: jig
132: crosswalk 134: specimen bed
136: support end 138: lower electrode fastener
139: lower electrode fastening hole

Claims (20)

An upper body portion and a lower body portion formed to be insertable on the upper electrode and the lower electrode of the electric resistance spot welder, respectively, and having an opening surface recessed inward in opposite directions;
An extension part formed to extend from each other at outer ends of the upper and lower body parts;
Light shielding portions formed on outer peripheral surfaces of the upper body portion and the lower body portion, respectively; And
Sputter prevention device of the electric resistance spot welder having a welding specimen jig comprising a; jig portion mounted in the opening surface of the lower body portion seating the weld specimen to align the weld specimen.
The method of claim 1,
The light shield,
Spatter prevention apparatus of the electric resistance spot welder having a welding specimen jig, characterized in that the heat-resistant film-like member having a light blocking function is formed on the outer peripheral surface of the upper body portion and the lower body portion.
The method of claim 1,
The upper body portion, the lower body portion and the extension portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welded specimen jig, wherein the entire area of the welded specimen is seated and aligned on the jig.
The method of claim 1,
The upper body portion and the lower body portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welded specimen jig having a conical or hemispherical outer shape.
The method of claim 1,
The upper body portion and the lower body portion spatter prevention device of the electric resistance spot welder having a welding specimen jig characterized in that the material is made of transparent heat-resistant glass or heat-resistant reinforced resin.
The method of claim 1,
The extension portion,
Spatter prevention of electric resistance spot welder with welding specimen jig, characterized in that the bellows shape that can be enlarged or reduced in the up and down direction corresponding to the size of the welding specimen seated and aligned on the jig portion Device.
The method of claim 1,
The extension portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welded specimen jig, characterized in that it is a flexible material having heat resistance.
The method of claim 1,
The extension portion,
Spatter prevention apparatus of the electric resistance spot welder having a welding specimen jig, characterized in that the upper body portion and the lower body portion, respectively detachable form.
The method of claim 1,
The upper body portion, the lower body portion and the extension portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welding specimen jig, wherein the size and shape of the electric resistance spot welder are determined within a range that does not interfere with the movement of the upper electrode and the lower electrode.
An upper body portion and a lower body portion formed to be insertable on the upper electrode and the lower electrode of the electric resistance spot welder, respectively, and having an opening surface recessed inward in opposite directions;
An extension part formed to extend from each other at outer ends of the upper and lower body parts; And
A pair of light shields formed on the outer circumferential surfaces of the upper body portion and the lower body portion, respectively, and a pair of transversal portions arranged in contact with both sides of the welded specimen seated upwardly of the lower body portion to support linear alignment of the welded specimen. The beam is connected to and formed between the pair of cross beams and is stretched in the lateral direction according to the width of the weld specimen to adjust the spacing between the pair of cross beams and to provide a seating surface to the weld specimen. It is formed between the specimen bed and a pair of support ends and a pair of support ends which are formed to extend downward from each of the pair of cross beams to be mounted in close contact with the opening surface of the lower body portion, It includes; a lower electrode fastener having a lower electrode fastening hole for inserting through the electrode; jig portion comprising a; including A spatter protection of the electric resistance spot welder comprising a welding jig specimen according to claim.
The method of claim 10,
Spatter prevention of an electric resistance spot welder having a weld specimen jig, wherein the contact beam and the lower electrode of the cross beam, the specimen bed, the support end, and the lower electrode fastener are in contact with each other. Device.
The method of claim 10,
The pair of cross beams is provided with a scale mark for checking the overlap length of the welded specimens, sputter prevention device of the electric resistance point welder having a welding specimen jig characterized in that it is provided.
The method of claim 10,
The light shield,
Spatter prevention apparatus of the electric resistance spot welder having a welding specimen jig, characterized in that the heat-resistant film-like member having a light blocking function is formed on the outer peripheral surface of the upper body portion and the lower body portion.
The method of claim 10,
The upper body portion, the lower body portion and the extension portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welded specimen jig, wherein the entire area of the welded specimen is seated and aligned on the jig.
The method of claim 10,
The upper body portion and the lower body portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welded specimen jig having a conical or hemispherical outer shape.
The method of claim 10,
The upper body portion and the lower body portion spatter prevention device of the electric resistance spot welder having a welding specimen jig characterized in that the material is made of transparent heat-resistant glass or heat-resistant reinforced resin.
The method of claim 10,
The extension portion,
Spatter prevention of electric resistance spot welder with welding specimen jig, characterized in that the bellows shape that can be enlarged or reduced in the up and down direction corresponding to the size of the welding specimen seated and aligned on the jig portion Device.
The method of claim 10,
The extension portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welded specimen jig, characterized in that it is a flexible material having heat resistance.
The method of claim 10,
The extension portion,
Spatter prevention apparatus of the electric resistance spot welder having a welding specimen jig, characterized in that the upper body portion and the lower body portion, respectively detachable form.
The method of claim 10,
The upper body portion, the lower body portion and the extension portion,
An apparatus for preventing spatter of an electric resistance spot welder having a welding specimen jig, wherein the size and shape of the electric resistance spot welder are determined within a range that does not interfere with the movement of the upper electrode and the lower electrode.

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