TW567107B - Device and method for low-deformation precision welding of 0.2 to 0.5 mm thin sheets - Google Patents

Abstract

This invention provides a device and method for low-deformation precision welding of 0.2 to 0.5 mm thin sheets, which adopts the measures of laser welding of continuous and overlapping high frequency impulse dots, while controlling the energy for the laser welding to allow uniform melting and high evenness at the welding joints without any apertures. Clamping devices are used to secure two steel sheets to a dedicated med. Laser is used to radiate towards the welding joint of the two steel sheets so as to result in instantaneous vaporization and melting of the steel sheets thereby naturally fusing the gaps at the welding joint of the two steel sheets. This invention makes use of the steel sheets per se as the welding agent to achieve the objective of welding two steel sheets with enhanced strength to prevent breaking and to eliminate the use of welding material.

Description

567107

As shown in a of "Background of the Invention", the method of metal plate 3 1 metal plate 3 1 and the energy-thin metal plate 3 are relatively large and cause deformation. At the same time, in order to prevent loss, it must be wiped very dry and oxidized. 3 料 3 2 'will cause the display' to be in two 2 'and use ^ 亍 to melt to make 1 joints Table 3, 3 4 The board 3 1 joint 3 1 joint full fusion 3 5 In the current semiconductor industry or electronic packaging In the field of industry, how can a low-strain, high-precision thin metal plate bonding device be provided to meet the needs of the semiconductor industry, that is, the invention of the present invention ^ As shown in FIG. 1 and generally thin, since the thin 3 1 The soldering can easily cause 'their thermal expansion to the ground, easy to connect the effect' and the oxidized defect cleaning agent to carbonize and not clean, so that 3 1 joints shown in Figure 1b b solder 3 South thermal method Thin metal plate 3 Negative two electrodes 3 Two thin metal plates The thin metal plate portion cannot be completed, so the habit is straight (general refers to 0 · Very thin, and difficult to control and 1 produces holes. Welding points are also large, flatness is limited Thin metal plates must be made of thin metal The process is complicated. If the 4th Rong Ri Shou cannot make two thin metal plates, the thin metal plate can be positive and negative, and the three sides of the solder can be formed. If the electrode is less than 5 mm, it is necessary to use welding when it is directly connected. It is large (approximately 2 3 poor and difficult 3 1 when welding the thin plate 3 1 when welding thin metal if the thin metal is adhered to 3 1 cannot be dense 3 1 joint electrode 3 3, 3 2 melts, and it is not easy to control the stability of holes and uneven soldering as shown in c. 3 Welding method of worrying about 3 2 continuous fractures.) Touch thin metal sheet 3 during welding. 2, because of continuous welding mm). Before carbonization occurs when welding or other defects occur, use special plate 3 1 not easy plate 3 1 to wipe the thin metal plate to close the joint, and the upper and lower must be divided into 4 pieces at high temperature, fused to two pieces 'due to the positive and negative' The two connections are outside and inside

mm

Page 4 567107 i No. 9011Q27R V. Explanation of the invention (2) The technical difficulties to be solved and the motivation for research and development are "Invented with experience, the purpose is to connect the device, overlap the laser light. The laser light is used for instants. In view of this, and in the laser welding of the extraction method, the thin steel used for vaporization is sandwiched and irradiated with two thin steels that are good and unintended. The considerations developed in this case provide a 0, which uses a uniform welding method. The fusion device melts two pieces of thin steel plates and easily breaks the plate material. The Ming Dynasty itself has finally made the present invention ~ 0.2_ thin gold to take pulses with a chirp frequency, and can control laser and high leveling. In addition, the thin steel plate is fixed at the special welding place, so that the two thin steel plates are welded together as a bonded joint without the use of solder to engage in the phase. The low point dense welding can be used on the bed. The coating agent, which is the perennial of the Daguan industry, its primary deformation is the continuous amount of the precision welding composition, and the breakage is generated, and the welding of the plate material itself is used to naturally fuse its welding. Two sheets of thin steel plate "Technical content, characteristics and efficacy" Pan Shan c. Examiner convenient and easy to understand the other features of the present invention .... ,, the achieved effect can be more apparent, hereby will This # 日 @% 今 drawings, the detailed description is as follows: Moda does not work together as shown in Figure 2, the present invention is 〇. ~ Deformed precision welding 奘 w ^ 'I is a plate low X Μ: The installation system contains a laser Welding system 1 and clamping and: the shot has very high thermal concentration, its shape and hole breakage during welding, + A female Yu Lak becomes changed-so while the clamping device of the present invention clamps a thin steel plate; 67l ° 7 Case No. 90119276 ± _η Description of the invention (3) The chrysanthemum uses a clamping device with a high thermal conductivity to conduct heat from the thin steel plate, so that the amount of deformation caused by the laser welding of the thin steel plate It is very small, and its precision and degree are relatively low to meet the needs of the semiconductor industry. It is characterized by: The clamping set is composed of two sets of left and right clamping sets 2, and the clamping set 2 includes One clamp solid 2 1, several pressure blocks 2 2 and one pressure plate 2 3 ′ The groove 2 1 1 can be set by several pressure blocks 2 2, and the upper surface of the pliers solid 2 1 is provided with a plurality of screw holes 2 1 2 that penetrate the entire pliers solid 2 1, by means of screws 2 1 3 Through and screw in to lock the corresponding pressure block 2 2 below the door groove 2 1 1, and the pliers solid 2 1 are also provided with several screw holes 2 1 4 on both sides of the pliers solid 2 1, 俾It is screwed through the screws 2 1 5 to be fixed on the bed 3 (as shown in Figure 4), and a flat plate 2 3 'is set between the pressure block 2 2 and the bed 3. A thin sheet of steel 4 is placed between the left and right sets of clamping plates 2 3 and bed 3 of the clamp 2 respectively, that is, through the screws 2 1 5 to penetrate the solid of the clamp 2 1 and the screw holes 2 1 4 on both sides are screwed into the lock On the bed 3, and by slowly tightening to generate downward pressing force, the pressure block 2 2 below the solid 2 钳 of the forceps can be evenly applied to the pressure plate 23, and its pressing force also causes the pressure plate 2 3 to be below The thin steel plate 4 is flat and fixed on the bed 3; The laser welding system 1 is composed of a laser 11 and rollers 1 2 and 1 3 arranged in front and rear, of which the laser 1 1 And front and rear roller workers 2, 1 and 3 It is placed on the top of two thin steel plates 4 to be welded 41 (as shown in Figures 5 and 6), and when the laser 1 1 welds two thin plates (as shown in Figure 7 (A)) 'The front roller 1 2 series First, weld the welded joint 4 1 (as shown in Figure 7 (B)) 'to make the welded joint 4 1 on the surface of the thin steel plate 4 flat and easy to weld by laser 1 1 (as shown in Figure 7 (c)). High plane

Page 6 V. Description of the invention (4) Degree, but after welding by laser 1 1 because it still has heat and has high ductility (as shown in Figure 7 (D)), it also uses the rear roller 5mm〜〇 · 2mm 薄 After 13 flattening and flattening (as shown in FIG. 7 (e)), there will be no bumps and burrs, and high flatness (see FIG. 7 (F)); The metal plate low-deformation precision welding method uses laser light welding. Due to the high energy point, thermal conductivity and stability of the laser, and the laser light point is very small, its welding speed is also faster than the general electronic welding speed. Faster, if two thin steel plates are welded, the diffusion of 1 埶 is small and the amount of deformation is very +, and the laser system is made of high frequency: the punch points are densely formed into a continuous, 4-fold welding method, and It can control the laser welding energy, reach the laser light welding place with uniform fusion and high flatness, and also generate holes. It is not necessary to touch with the sheet material when using laser welding. Table 3 # can be placed between the sheet and the laser Some protection --- for rat oxygen) to prevent oxidation and carbonization during welding Shaped hair = direct and effective protection, as shown by ^, the two to be joined first = special 戍 two guards 扪 fix two thin steel plates on the mouth 6 with a clamp, and pass the electronic monitor (CCD ) And the computer age tabulate its position and set the laser focus welding path 7, as shown in Figure IX. If the laser focus welding path is not corrected, then the deviation point 42 will produce welding ... = =: Yes: the brain can set continuous and overlapping laser beams to complete the welding fusion action8, and Λ y $ 2 and then two pieces of 溥 steel plate 4 welded piles with Ray jz ^ ^ G and no holes , And there is no ^ on the surface of the thin steel plate 4 and then as shown in Fig. 10, the phenomenon of "reversing by Xi Lei"; Steel plate 4 smelting joint ϋ-l further makes the side thin steel plate material itself an instantaneous door, > transformation rule ------------------- a melting and will- -9011 卯 7fi— V. Description of the invention (5) --- One— Two sheets of thin steel sheet: 接 _ amp &M; the material itself is used as a bond: 接 = 自: Fusion 9, which uses 4 sheets of thin steel sheet to crack, Without the need for an agent, its welding The good strength, and easily broken by * material, carbonizing the raw steel sheet 4_, Yi of Si oxide at the welded ★ 41 will not easily generated. Phenomenon, can also achieve the purpose of joining two thin steel plates 4

I said a correction to make the points listed such as 1, laser diffusion 2, laser 3, laser joints 4, laser two good, 5, difficult 6, can be connected at 7 8 and laser thin steel elephant Under the present invention: The light spot is small and the welding speed is high, and the welding system thin plate is not easily broken to produce a carbon thin plate and to prevent the surface of the welding plate from being effectively produced. Its progress and practicability, it is better to control the deformation of a small frequency than a frequency and high level of cracks caused by thin joints, and protection during welding, oxygen laser welding. At the same time, the heat-sealing effect is improved by welding the joints. ’If two thin plates are welded, the heat is also very small. Electronic welding is generally faster. The pulse points are densely formed into a continuous, heavy laser welding energy, which achieves the integrity of the laser without any holes. The material of the board itself is instantaneously vaporized and the gaps are naturally fused. No soldering is required for the solder joints. Phenomenon. Place some protective gas (generally nitrogen 'oxidation and carbonization). The front and rear rollers will straighten the welded joint to make it more flat, so there will be no bumps and burr visibility. It can extract the heat from the thin steel plate, and the welding light of the stack is melted to make the strength stronger than 鮝 107107107 _Case No. 90119276_ Year, month, and month of the year_ V. Description of the invention (6) In the process of laser welding thin steel plate, its The amount of deformation caused is very small and the precision is high. 9. It has the value of use in industry and industry. In summary, the invention has already met the application requirements for invention patents. Ming Jian, and granted the patent right of this invention, it is a real sense.

567107 Case No. 90119276_Year Month and Day Amendment Simple Explanation of Drawings Drawings say J 1 11 12 13 2 2 1 2 11 2 12 4 2 1 2 2 2 3 3 2

Laser welding system Laser front roller rear roller clamping clamp solid • door groove • screw hole • screw • screw hole • screw pressure plate bed plate thin metal plate solder positive electrode negative electrode cannot be fully integrated with thin steel plate welding The two thin steel plates to be joined at the deviation point are simply wiped. The two thin steel plates are fixed to the special bed with a clamp.

Page 10 567107 _Case No. 90119276_ Years and Months Revision _ Brief Description of Drawings 7 · · The electronic monitor (CCD) and computer monitor their positioning points and set the laser focus welding path 8 ·· Complete the welding fusion operation 9 · • The thin steel plate material itself is instantaneously vaporized and melted, and the gap between the fusion of the two thin steel plates is naturally merged. The first illustration a is a schematic diagram of two thin metal plates using electrode welding. The first picture b is a schematic diagram of the welding of positive and negative electrodes by soldering. The first figure c is a schematic view of solder welding between two thin metal plates.

The second figure is an exploded perspective view of the clamp set of the present invention. The third figure is a combined top view of the clamp set of the present invention. The fourth figure is a cross-sectional view of the clamp set of the present invention for clamping a thin steel plate and locking it on a bed. The fifth figure is a perspective view of two sheets of thin steel sheet fused by laser welding according to the present invention. The sixth figure is a side view of two sheets of thin steel sheet fused by laser welding according to the present invention. The seventh diagram is an operation step of welding two thin steel plates according to the present invention.

The eighth figure is a flow chart of the present invention for welding two thin steel plates by laser. The ninth figure a is a schematic diagram of the positional deviation of the lightning firing light between two thin steel plates. The ninth picture b is a schematic diagram of the correct position of the lightning firing light between two thin steel plates. The tenth figure is a schematic diagram of the fusion of two sheets of thin steel plates by laser welding.

Page 11

Claims (1)

567107 Case No. 9011927R VI. Application for Patent Range Amendment 1. A 0.5 mm to 0.2 mm and method, the device includes a dedicated, a laser, a clamping set and a computer that fixes two sheets of thin steel to a dedicated computer After monitoring its positioning point, and after correcting the welding path, the clamping tool set is completed by two thin and rear rollers to complete the welding fusion. The clamping tool set consists of a left and a set of solid tools, and several lower parts are recessed inside. A door-shaped groove, and the upper surface of the body is provided with a plurality of through-wires to be screwed into the lower side of the door-shaped groove to lock the pressure plates on the bed.俾 When screwing between the pressure plate and the bed of the group clamp to be welded, the screw hole is screwed and locked on the bed, and the force makes the pressing force under the clamp solid also causes the thin metal plate under the pressure plate to have low deformation Precision welding device bed σ — composed of an electronic monitor and a computer set of rollers, in which the lost bed is used, and the electronic monitor and the continuous and overlapping laser focus plates are set above the laser welding and forward action of the steel plate to be welded. By, It is characterized by the right two sets of clamps, and the clamp block and a pressure plate, where the clamp solid can be set by several clamps, and the clamp solid screw holes of the whole clamp, by the screw Pressure block corresponding to the square, and the entire screw hole of the clamp solid is also screwed, and a flat and two thin steel plates are respectively placed between the compact and the bed, which are respectively inserted into the left and right sides, and penetrate through the screws The solid sides of the clamp are slowly tightened to produce a downward compression pressure block, which can evenly apply force to the pressure plate. The thin steel plate is flat and fixed on the front and rear rollers of the bed. The steel plates are to be welded on the upper side, where the wheel and the rear roller system are respectively located on the front and rear sides of the laser. Page 12 30 / 1U7 2. A method for implementing the aforementioned application specifically for laser welding Λ Η 锖 &# the rail enclosure device, wherein the thin steel plate surface is welded; ^ ti is the first to weld the welded joints, and The welded joints are flat and easy to laser weld, but :: first irradiate the two welded joints of the thin steel plates, and then the material of the thin steel plates is instantaneously vaporized and melted, so that the gap between the welded areas of the two steel plates is automatically merged. Because the stop θ 士士 is also "", Yang Yang _ You 热 heat, and has a high degree of ductility, so, again, ^ wheel rounding, flattening 'can prevent bumps and burrs phenomenon ^ 疋The purpose of precision welding into two thin steel plates. Page 13