KR0155504B1 - Laser welding chuck - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser welding chuck for mounting an optical transmission / reception module for use in an optical communication system. The present invention provides a method for firmly holding a rectangular component by using a wedge effect through movement of a piston operated by compressed air. According to the present invention, a nest for mounting a mounting hole and a welded object is installed on the outside, and the compressed air supply air flow path for operating the piston of the operating member provided therein is mounted to the laser welding device. A body installed connected to the inside; An actuating member having a piston for operating in a cylinder provided in the body, the wedge having an inclined surface on one side thereof, and a roller, a movable block, and a pressing block operated by an inclined surface of the wedge; Characterized in that it consists of a mounting means having a reference block and a grip lever and an auxiliary block to set the square parts to the mounting reference.

Description

Laser Welding Chuck

1 is a front view of a partially cut in the assembled state of the present invention.

2 is a cross-sectional view of the assembled state of the present invention.

3 is a right sectional view of the present invention, in which (a) is a state before the rectangular component is fixed.

(b) shows the square parts fixed.

4 is an enlarged planar view.

5 is an enlarged side view.

6 is a cross-sectional view taken along the line B-B in FIG.

7 is a perspective view of an alignment member including a grip lever according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: body 110: mounting hole

120: fixed base 130: air passage

131: air piping 140: cylinder

150: fixed block 160: base block

210: piston 211: rubber packing

212 cylinder 220 wedge

221: slope 230: bearing

240: roller 250: movable block

251: guide pin 260: push pin

270: push block 280: compression spring

290: leaf spring 310: reference block

320: auxiliary block 330: grip lever

340: stop pin 350: hinge pin

360: Spring 400: Square Parts

500: weldment

The present invention relates to a laser welding chuck required for installing and fixing an optical transmission / reception module used in an optical communication system.

In general, the optical transmission module consists of optical components such as laser diode, green lens, optical fiber, etc., and therefore requires a high level of installation and packaging technology that requires submicron level alignment between each other. do.

To this end, there is a difficulty in fixing the housings and the cases in which the optical parts are embedded in a highly precise arrangement.

As a fixing method commonly used, epoxy adhesive, soldering, laser welding, etc. may be used, but laser welding, which is advantageous in terms of reliability and workability, is mainly applied.

When installing and packaging parts by laser welding, the parts should be firmly gripped so that the alignment does not change due to thermal expansion and contraction of the welding part that occurs during the process. The general cylindrical part is a collet chuck. ) Can be gripped relatively easily, but in the case of a rectangular component, it is not easy to grip firmly, and application examples are not well known.

The present invention is to weld the rectangular rectangular body parts to the welded object, by converting the doubled force pushed in the vertical direction to the horizontal direction by the wedge provided with an inclined surface for firmly gripping in order to make the welding in the correct position It is an object of the present invention to provide a chuck for laser welding, which is designed to firmly grip a rectangular component that is a workpiece.

In order to achieve the above object, in the present invention, the roller is contacted using an inclined surface of the wedge hinged to one end of the piston rod moving by compressed air, and the wedge is provided with a wedge for strongly pushing the movable block on which the roller is installed. Lifting the horizontal movement force of the lifting block, auxiliary block and base block and movable block on the upper surface of the body to precisely set the moving member and the square part, which gives the push pin and the push block the flexibility to hold the square part evenly. It is composed of a leaf spring for the doubled of the wedge having an inclined surface by using a pushing force, characterized in that to enable the strong holding of the square parts.

That is, a fixing stand for mounting the mounting hole and the object to be welded is installed on the outside for mounting on the laser welding device, and a compressed air supply air passage for operating the piston of the operating member provided therein is connected to the inside. A body;

A movable block having a piston for operating in a cylinder provided in the body, and a roller which is connected to the piston and which has a wedge having an inclined surface on one side and a roller for transmitting a force in a horizontal direction by a vertical downward direction of the inclined surface of the wedge. And a small member inserted into one end of the movable block by a leaf spring and having a push pin for firmly holding a rectangular component and a push block fixed integrally with the push pin;

A reference block for setting the rectangular component as a mounting reference, a gripping lever for gripping the rectangular component by an elastic force of a spring around a hinge axis on one side of the lifting block, and an alignment member having an auxiliary block on the other side Characterized in that configured to include.

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

1 is a front view of the assembled state of the present invention, Figure 2 is a plan view of the present invention, Figure 3 is a right cross-sectional view showing the internal structure and operating state of the ball invention, (a) is a state before the rectangular component is fixed, (b) has shown the state in which the square component was fixed.

Looking at the configuration of the present invention, the mounting hole 110 and the base to be mounted on the mounting base 110 and the square parts to be mounted on the basis of the square parts to be mounted on the laser welding apparatus, the upper part of the base block 160 A body (100) installed at and connected to the compressed air supply passage (130) for operating the piston (210) of the operating member provided therein;

A piston 210 operating in the cylinder 140 provided in the body 100 and a hinge 223 connected to the piston 210 are operated and have a wedge 220 having an inclined surface 221 on one side thereof. Movable block 250 having a roller 240 for transmitting the force in the horizontal direction by the vertical down of the inclined surface 221 of the wedge 220, and a leaf spring 290 on one end of the movable block 240 An operation member (200) having a push pin (260) and a push block (270) integrally fixed to the push pin (260) to be inserted into and securely gripped a rectangular component;

It is installed at a predetermined interval with the operating member, the reference block 310 to set the square component 400 to the mounting reference, and the elastic force of the spring 360 around the hinge shaft 350 on one side of the reference block The gripping lever 330 for gripping the rectangular component 400 and the other side is configured to include an alignment member 300 having an auxiliary block 320.

The lower portion of the piston 210 of the operating member 200 is provided with a compression spring 280 for the cushioning and restoring function, the cylinder 212 and the rubber packing 211 to prevent the loss of compressed air body 100 ) Is provided between the piston 210 and the rear surface of the wedge 220 is provided with a bearing 230 for smooth operation, the head of the push pin 260 is made of a spherical to make point contact.

The movable block 250 of the actuating member 200 is installed so that the guide pins 251 are inserted into the fixed block 150 on both sides so that the movable blocks 250 can be accurately operated horizontally and the compression springs 280 are provided on the guide pins 251. ) Is installed.

The operation member is fixed block 150 so that the wedge 220 hinged to the top of the piston 210 rod to smoothly move up and down to amplify the force for firmly holding the mounted rectangular component 400 The bearing 230 is provided between and.

Referring to the operation effect of the present invention configured as described above, the holding lever 330 is pressed between the base block 160, the auxiliary block 320, and the reference block 310, which has been precisely processed into a mold 400 which is a workpiece. If the charging lever and the grip lever 330 are released, the guide block 310 and the base block 160 are guided by the force of the spring 360 and the square component 400 is pushed toward the auxiliary block 320. do.

When compressed air is introduced through the air pipe 131, the compressed air is introduced into the cylinder 140 through the air passage 130 inside the body 100, and the piston 210 is downward by the air pressure.

At this time, since it is sealed by the rubber ring 211 and the 0 ring 215 at the bottom of the cylinder 212 installed in the piston 210, it serves as an air cylinder.

When the piston 210 moves downward, the wedge 220 connected to the hinge 223 on the upper side is also downwardly guided by the bearing 230 and the roller 240 is in contact with the inclined surface 221 of the wedge 220. ), The downward force of the piston 210 by the so-called wedge effect (when a wedge having an inclination angle between the given gaps is driven, a force to open a given gap with a strong force even when driven with a small force is applied). It is pushed by powerful force more than several times.

By this force, the movable block 250 on which the roller 240 is hypothetically moves horizontally along the base block 160, and the push pin 260 and the push block 270 connected to the leaf spring 290 also move horizontally. The set rectangular component 400 is strongly pushed toward the reference block 310 to be gripped.

At this time, the stop pin 340 is pressed into the body 100 to prevent the reference block 310 from being pushed out by the strong gripping force.

Here, the leaf spring 290 serves to give flexibility to adapt to the change in shape due to the moving error of the various parts, and to make one shape of the push pin 260 to be spherical to the center of the rectangular component 400 It is to give a point contact force so that it can be held uniformly to act.

In this way, when the rectangular component is strongly gripped, the welding material to be welded with the rectangular component is fixed to the holder according to the semiconductor installation and fixing process, and then the laser welding device is fixed to the body by using the mounting hole to cause laser welding. The external force can be sufficiently suppressed to maintain the alignment of the miner parts aligned with high accuracy.

The welding material 500 to be placed therein may be of various types, and in the embodiment of the present invention, a fixing material capable of placing a cylindrical housing having a hole formed therein, which is widely used as an optical module component,

Protruding portion is formed on the fixture to be fixed by inserting the weld 500 formed with a hole corresponding to the protruding portion.

After the process is completed, the process of extracting the square parts proceeds in the reverse order of the sebum process.

First, when the compressed air inlet state is released, the piston 210 moves upward by the restoring force of the compression spring 280 installed at the lower end of the piston 210, and the wedge 220 also moves upward.

At this time, the guide pin 251 having one end fixed to the movable block 250 is pulled by the restoring force of the compression spring 280 hypothesized by the fixed block 150 to move the movable block 250, the push pin 260, and the pressing pin. Block 270 or the like is moved to the left.

As such, once the strong gripping state is released, the rectangular component 400 may be extracted by pressing the gripping lever 330 installed on the reference block 310.

The present invention can obtain a strong gripping force required for installing and fixing the rectangular component 400 by the operation effect as described above, and the reference plane is precisely processed, such as the reference block 310, the auxiliary block 320 and the base block 160 It is designed to enable precise gripping suitable for laser welding characteristics by allowing the square component 400 to be set, which is useful for installation and packaging of optical module products.

Claims (3)

Mounting holes 110 and mounting bases 120 on which mounting objects can be mounted, and base blocks 160 for setting square parts as mounting standards are installed on the upper part so as to be mounted on the laser welding device. A body 100 having an air passage 130 for supplying compressed air for operating the piston 210 of the operated member connected therein; A piston 210 operating in the cylinder 140 provided in the body 100 and a hinge 223 connected to the piston 210 are operated, and a wedge 220 having an inclined surface 221 on one side and the Movable block 250 having a roller 240 for transmitting the force in the horizontal direction by the vertical down of the inclined surface 221 of the wedge 220, and is inserted into one end of the movable block 240 by a leaf spring An operation member (200) including a push pin (260) and a push block (270) integrally fixed to the push pin for firmly holding a rectangular component; A reference block 310 to set the square component 400 as a mounting reference, and a grip lever 330 for gripping the square component by the elastic force of the spring around the hinge axis on one side of the reference block, and on the other side Laser welding chuck characterized in that it comprises an alignment member having a secondary block 320. According to claim 1, the lower portion of the piston 210 of the operating member is provided with a compression spring 280 for the cushioning and restoring function and the cylinder 212 and the rubber packing 211 to prevent the loss of compressed air is the body It is provided between the 100 and the piston 210, the rear surface of the wedge 220 is provided with a bearing 230 for smooth operation, one side end of the push pin 260 is characterized in that it is formed in a spherical surface Chuck for laser welding. According to claim 1, The movable block 250 of the operation member is installed so that the guide pin 251 is fitted to the fixed block 150 on both sides so that the horizontal operation can be precisely operated and the compression spring on the guide pin 251 280 is a laser welding chuck characterized in that the installation.