TWI673131B - Equipment and method for automatically welding and welding stainless steel elbow joints along the axial direction - Google Patents

Abstract

The invention relates to a device and a method capable of automatically welding and welding a combined stainless steel elbow joint in the axial direction. The method requires an operator to place only two semi-finished stainless steel elbow joints with semi-circular cross-sections and place them into two mutually In the corresponding positioning mold, when the corresponding sides of the two positioning molds abut against each other, the semi-finished products of the elbow joints will form two joint seams due to the abutment, and one joint mold will abut against the elbow joints. The inside of the semi-finished product corresponds to the position of each of the joints. An automatic welding machine can weld each of the joints along the axial direction of the elbow joint. At this time, the joint mold will still The edge provides an inert gas to avoid excessive oxidation of the welded part due to high temperature. In this way, the semi-finished product of the elbow joint can be quickly and air-tightly combined into a stainless steel elbow joint.

Description

Equipment and method capable of automatically welding and welding stainless steel elbow joints in axial direction

The invention relates to a device and a method for assembling stainless steel elbow joints, in particular to a semi-finished stainless steel elbow joint that only needs to be semi-circular in cross section and placed in a device, which can automatically make the device weld and combine. Equipment and methods for forming semi-finished elbow joints to form stainless steel elbow joints.

According to the fact, various semiconductor components are already indispensable basic parts in various electronic products. Therefore, the good and bad of its quality will directly affect the performance of each electronic product, so it is also called "crude oil of the electronics industry". The importance is self-evident, especially in the past two or three decades, with the advancement of various industrial technologies, the processes and steps of the semiconductor industry have continued to improve. However, whether the initial wet Process, or the subsequent development of gas dry processes or compound semiconductor processes ... etc., these process technologies must still use a large number of acid and alkali solutions, organic solvents and special gases ... and other process materials to assist the process reaction (such as : As photoresist, developer or organic solvent for cleaning), and these process materials are toxic to human body or other organisms, so in general, semiconductor industry must be in their process room Set up at least one exhaust gas emission system to exhaust the exhaust gas generated by these process raw materials to a gas collection tank through the exhaust gas regulating device. Perform recycling.

Check, in the process room of all kinds of semiconductor or electronic components, In addition to the exhaust emissions described above, process parameters such as temperature, cleanliness, room pressure, air velocity, and air distribution in each process chamber must also be stably controlled by the exhaust adjustment device in the exhaust emission system. Within an expected ideal range, it can be ensured that the manufacturing process of each semiconductor element or electronic component can be correctly performed and completed, so as to ensure that the production yields of various types of semiconductor elements or electronic components can be stably maintained within an ideal range. According to this, each of the exhaust gas regulating devices must be provided with a "regulating damper" so that the operator can adjust and control the exhaust gas emission rate and flow rate accordingly. Here is just a conventional exhaust gas regulating device 4 which has been widely used in the industry as an example, please refer to the figures 1 and 2 for detailed explanations as follows: Please refer to the second figure, the conventional exhaust gas The regulating device 4 is provided with an exhaust pipe 41 and at least one regulating damper 43. One end of the exhaust pipe 41 is connected to a process chamber (such as a semiconductor or photovoltaic product) through a series of stainless steel exhaust pipes connected in series one by one. Process room ... etc), the other end of the exhaust pipe 41 is connected to a gas collection tank (such as exhaust gas recovery tank ... etc.) through another series of stainless steel exhaust pipes connected in series one by one. (Shown) to discharge the exhaust gas collected from the process chamber to the air collection tank, the regulating damper 43 is arranged in the exhaust duct 41, and the exhaust amount of the conventional exhaust regulating device 4 is subject to a The control of the conventional damper adjusting mechanism 3 is one of the conventional damper adjusting mechanisms 3 which is currently widely used in many exhaust emission systems. As shown in FIG. 1, the structure of the conventional damper adjusting mechanism 3 will be described. And the operation mode is as follows: check, please refer to Figure 1, the customary style The adjusting mechanism 3 includes a base 31, a pressing handle 32, and a linkage lever 39. Among them, the base 31 is provided with an adjusting groove 33, and the adjusting groove 33 is provided with a plurality of adjusting scales 331. The pressing handle 32 is pivotally connected to the base 31 through a pivot 30, and a card insertion member 321 is protruded at a position adjacent to one end 320 and corresponding to the adjustment groove 33. The card insertion member 321 can be inserted and locked. To one of the adjustment scales 331, And when the operator presses the pressing handle 32 adjacent to the other end 322, the card insertion member 321 can leave the adjustment scale 331, so that the operator can use the pivot 30 as the center and follow the adjustment. The groove 33 rotates the pressing handle 32 back and forth; otherwise, when an operator releases the pressing handle 32 adjacent to the other end 322, the card insertion member 321 will be inserted and locked to the current corresponding adjustment. Scale 331.

Please refer to FIG. 1 and FIG. 2 again, the linkage rod 39 is pivotally connected to the conventional exhaust gas regulating device 4 and spans the exhaust duct 41, and the regulating damper 43 is fixedly arranged thereon so that The pressing handle 32 can drive the adjusting damper 43 to rotate through the linkage lever 39 to open or close the exhaust duct 41. One end of the linkage lever 39 is exposed outside the exhaust duct 41 and passes through the pivot shaft 30. Is connected to the pressing handle 32, so that the linkage lever 39 together with the adjusting damper 43 fixed thereon can rotate with the pressing handle 32. In this way, the operator can adjust and control the exhaust volume and exhaust rate of the exhaust duct 41 in the conventional exhaust adjusting device 4 through the conventional damper adjusting mechanism 3.

In addition, in order to improve the manufacturing quality of semiconductor or optoelectronic products, the industry will still install a high-sensitivity detection instrument in its process room to monitor the concentration of chemical gas in the process room to ensure the chemical gas in the process room. The concentration can be effectively controlled and always maintained within a standard range. Therefore, please refer to FIG. 2 for reference. The exhaust volume and exhaust rate of the conventional exhaust gas regulating device 4 must be accurately adjusted to An ideal setting value can be continuously and stably maintained at the ideal setting value, so as to prevent the high-sensitivity detection instrument from generating erroneous monitoring results, and then causing erroneous warning actions. However, please refer to FIG. 2 again, because on the conventional exhaust gas regulating device 4, the operator rotates the pressing handle 32 so that the card insertion member 321 can be inserted and locked to Corresponding to the adjustment scale 331 to adjust the air output to the ideal setting value, however, when the card inserting member 321 corresponds to the position between the two adjustment scales 331, the conventional damper adjustment The joint mechanism 3 cannot be positioned stably, and the conventional exhaust gas regulating device 4 is in a flawed state in which the opening and closing degree of the regulating damper 43 cannot be finely and accurately adjusted, that is, in the flawed state, Because the conventional damper adjusting mechanism 3 cannot accurately maintain the concentration of the chemical gas in the process chamber within the standard range, it is likely to cause the high-sensitivity detection instrument to malfunction, which will cause the operator to make a mistake and make the process and Production line shutdown ... and other issues, which have a serious negative impact on the production efficiency of semiconductor or optoelectronic products. In addition, please refer to FIG. 1 and FIG. 2 again, since the other end 322 of the pressing handle 32 is exposed outside the base 31, it is very easy to make adjustment due to accidental touching or collision by the operator. The damper 43 easily deviates from the originally set ideal opening and closing state, thereby causing the high-sensitivity detection instrument to malfunction and cause problems in subsequent processes and production lines to stop operating.

As mentioned above, in the aforementioned semiconductor or optoelectronic process room, the conventional exhaust gas regulating device 4 and the corresponding gas collecting tank and each of the process rooms are respectively passed through a series of stainless steel exhaust pipes connected in series one by one. Connected, all kinds of toxic exhaust gas generated in each process room can be completely discharged into the gas collection tank. Therefore, in order to ensure the safe and smooth discharge process of toxic exhaust gas, the industry has made such stainless steel exhaust pipes themselves. The quality, and the construction quality of the entire exhaust emission system in series in each of the process chambers, are extremely strict. In particular, please refer to Figure 3, these are assembled in the dead corners or corners of each process chamber. The elbow joints 5 used to connect two adjacent stainless steel exhaust pipes, because each of the elbow joints 5 are assembled to the dead corners or corners in each of the process chambers, and their pipes are often limited by the narrow space in which they are located. Must bear greater stress. At this time, if each elbow joint 5 itself has welding holes or seams due to improper operation during the manufacturing and assembly process, these welding holes or seams are likely to be caused by Withstand the large stresses or thermal expansion and contraction of each of the process chamber ambient temperature changes or vibration, and become increasingly larger, causing the discharge should originally The various toxic exhaust gases put into the gas collection tank have instead leaked back to the respective process rooms, which not only makes the related processes unable to maintain normal operation, but may also seriously endanger the health and safety of workers in the process room.

The inventor is a professional manufacturer that has been engaged in the design, manufacture, construction and assembly of indoor exhaust emission systems in various semiconductor or optoelectronic industry processes for the past two or three decades. In view of the aforementioned problems, and in order to improve the manufacturing efficiency and quality of the aforementioned elbow joints 5 , The inventor has specially developed, designed and manufactured an "automatic welding mechanism for elbow joints", and applied for a new Taiwan patent in accordance with the law on November 2, 1978, and was successfully approved as Taiwan New Patent No. 392544 in case. Please refer to FIG. 4. The automatic welding mechanism has a base 10. The base 10 is provided with a power unit 11. The power unit 11 is provided with a driving shaft (not shown). The driving shaft One end of the rod is pivotally connected to a turntable 12 to rotate the turntable 12 into a vertical table or a horizontal table by the actuation of the driving shaft. In this way, please refer to FIG. 5, which enables the operator to place two semi-finished pipe joints 501 and 502 that have been punched by the upstream processing plant and have a semi-circular pipe C in a cross section, respectively. One of the fixture members 20 provided on the automatic welding mechanism not only makes the semi-circular pipes C of the elbow joint semi-finished products 501, 502 opposite each other, but also refers to FIG. The semi-finished products 501, 502 of the elbow joints can be formed on the edges of the elbow joints 5 so that the corresponding edges of the elbow joints 5 can abut each other to form two joint seams 51, each of which is along the axis of the elbow joint 5 The joints 51 are respectively formed on two corresponding sides of the elbow joint 5, and as shown in FIG. 6, each of the joint seams 51 is exposed outside the clamp member 20, and thus, the automatic welding mechanism can be used to be adjacent to the clamp. An automatic welding machine is provided at the component 20, and each of the joints 51 is welded along the axial direction of the elbow joint 5 so as to quickly and accurately follow the axial direction of the elbow joint 5 respectively on its two sides. A welding bead 52 is formed on the corresponding side, so that these elbow joints are semi-finished products. 501 and 502 are combined into a finished elbow joint 5.

In this automatic welding mechanism, please refer to FIG. 4 again, one side of one base 21 of the clamp member 20 is fixed on one side of the turntable 12 which is not pivotally connected to the power device 11, On the other side of the base 21, two upright rod bodies 22 are vertically projected. The upright rod bodies 22 are spaced apart from each other and each has an appropriate length. The upright rod bodies 22 are far away from the base 21 A horizontal rod body 23 is fixedly arranged between the corresponding parts, and the horizontal rod body 23 is parallel to the base 21, so that the horizontal rod body 23, the upright rod bodies 22, the base 21 and the like form a hollow together. A cantilever frame body 201. An actuating rod body 24 is vertically arranged on the horizontal rod body 23. One end of the actuating rod body 24 is fixed with a parallel clamping plate 241. The parallel clamping plate 241 can be accommodated in the hollow cantilever frame. In the body 201, the other end of the actuating rod body 24 extends away from the base 21 to form a handle 242 thereon. In this way, the operator can move the parallel clamping plate 241 in the hollow cantilever frame 201 by pulling the handle 242, so that the parallel clamping plate 241 can firmly hold the elbow joint semi-finished products. The role and effect of 501, 502.

In addition, please refer to FIG. 6 again, the automatic welding machine 35 is installed on the automatic welding mechanism near the clamp member 20, and the automatic welding machine 35 is provided with a welding gun 36 and a guide pin 37, The purpose and effect of enabling the welding torch 36 to accurately execute and complete the fusion welding of the joint seams 51 are achieved by the guide pin 37.

In addition, please refer to FIG. 6 again. When the automatic welding mechanism is actually applied, the operator must first abut the semi-circular pipes C of the semi-finished elbow joints 501 and 502 against each other. Can be placed between the base 21 and the parallel clamp plate 241 of the clamp member 20, and by pulling the handle 242, the parallel clamp plate 241 can be displaced in the hollow cantilever frame body 201, so that Semi-finished elbow joints 501 and 502 can be clamped and fixed to the base 21 against each other. After being in contact with the parallel splint 241, please refer to FIG. 4 again, that is, the turntable 12 can be rotated properly by the driving of the power device 11 to adjust the semi-finished products 501, 502 of the elbow joints to abut each other. The position and angle of each of the joint seams 51, meanwhile, please refer to FIG. 7. In the process of turning the elbow joint semi-finished products 501 and 502 by the turntable 12, the welding gun 36 of the automatic welding machine 35 can The joint seams 51 on the elbow joint semi-finished products 501 and 502 that are in contact with each other respectively perform an automatic welding operation in the axial direction. The welding gun 36 of the automatic welding machine 35 completes the elbow joint semi-finished products in the axial direction. After the welding of the joint seam 51 abutting on one side of 501 and 502, the power unit 11 will drive the turntable 12 to adjust the semi-finished products of the elbow joints 501 and 502. The position and angle of the other joint seam 51 are then controlled by the welding gun 36 of the automatic welding machine 35, and the other joint seam 51 abutted against each other on the other side of the elbow joint semi-finished products 501, 502 again in the axial direction. Perform automatic welding operation, please refer to Figure 7 That is, the welding operation of the entire elbow joint 5 can be completed. In this way, the semi-finished elbow joints 501 and 502 can be welded and assembled in the axial direction to form the elbow joint 5 by simply performing the above steps repeatedly. Thereby, the mass production of the finished products of the elbow joints 5 is realized.

Check, although the aforementioned automatic welding mechanism was called "automatic welding machine" when applying for Taiwan's new patent No. 392544, in fact, when the inventor actually manufactured and operated the welding machine 35, he found that The corresponding two side edges of the semi-finished pipe joints 501 and 502 are extremely difficult to be accurately positioned to abut each other to form the expected two joint seams 51. Therefore, please refer to FIG. 5 again. In actual application, in order to ensure that the corresponding side edges of the semi-finished products of the elbow joints 501 and 502 bis can accurately abut each other to form the expected two joint seams 51, please refer to FIG. 7 again, so that After the welding torch 36 can complete the welding operation one by one for each of the joints 51 in the axial direction, the two corresponding side edges of the semi-finished pipe joints 501 and 502 are accurate and It is air-tightly joined to become the finished product of the elbow joint 5 without leaving any welding holes, burrs or gaps at the positions of the joint seams 51. Please refer to FIGS. 6 and 7 again. The inventor is Before the semi-finished elbow joints 501 and 502 are put into contact with each other between the base 21 and the parallel splint 241 of the clamp member 20, the semi-finished elbow joints 501 and 502 are manually placed. To a jig, the corresponding side edges of the semi-finished products 501 and 502 of these elbow joints are adjusted to accurately abut each other. After forming the two joints 51, refer to FIG. 8 and use a welding gun. 36 For each of the joints 51, spot welding operations are performed at intervals in the axial direction to form a plurality of welding points S at intervals where the corresponding side edges of the elbow joint semi-finished products 501 and 502 abut each other. The two opposite joints 51 of the semi-finished pipe joints 501 and 502 are formed to form the expected two joint seams 51, so that the semi-finished pipe joints 501 and 502 are combined into an initial joint 5 'of the bent pipe joint. The primary embryo 5 ′ is placed between the base 21 and the parallel splint 241 of the clamp member 20 Please refer to FIG. 7 again, so that the welding torch 36 can complete the welding operation in the axial direction for each of the joints 51, so that the two corresponding side edges of the original embryo 5 'of the elbow joint can be accurate and airtight. The ground joint becomes a stainless steel elbow joint 5 finished product. According to the above, the aforementioned automatic welding mechanism can only be barely referred to as a "semi-automatic welding machine mechanism", and must not or should not be called an "automatic welding mechanism". In addition, because it is used in the entire assembly and welding In the process, it still takes a considerable amount of man-hours and manpower to join the elbow joint semi-finished products 501 and 502 to form the expected two joint seams 51 and perform manual spot welding on each of the joint seams 51. Therefore, After the aforementioned automatic welding mechanism completes the assembly and welding process of the entire stainless steel elbow joint 5 finished product, the weld bead 52 formed on the two joints 51 on the two corresponding sides of the elbow joint 5 finished product is often caused by Human error presents the appearance and structure that are less natural, not beautiful, and even have serious defects (such as welding holes or gaps). At the same time, it cannot effectively improve manufacturing efficiency and quality. Therefore, this is where automation is required everywhere today. In the industrial environment, there is an urgent need to improve This is also an important subject for further exploration and breakthroughs of the present invention in the future.

In view of the aforementioned problems and shortcomings in the design and actual implementation of the aforementioned stainless steel elbow joint welding mechanism, the inventor has actively invested in relevant industry R & D, design, manufacturing and construction professional practice experience in the past two or three decades. After careful observation and research and development, and after many adjustments to design and performance evaluation, the device and method of the present invention that can automatically weld and weld combined elbow joints in the axial direction have been developed and designed in order to overcome the aforementioned problems and shortcomings Therefore, the device of the present invention becomes a fusion welding device capable of truly automatic fusion welding of stainless steel elbow joints.

The main object of the present invention is to provide a method for automatically welding and welding a combined elbow joint in the axial direction. The method is used for punching an upstream processing plant and forming a semi-circular cross section of a stainless steel elbow joint. The semi-finished product is automatically welded and assembled into a bent pipe joint product. The method includes the following steps: First, using two positioning molds corresponding to each other, the semi-finished pipe joint semi-finished products are adsorbed and positioned to each In the positioning mold; 嗣, driving each of the positioning molds so that the two are relatively displaced until the corresponding sides of the two positioning molds abut against each other, the two corresponding edges on the elbow joint semi-finished products can also abut each other. Two joint seams are formed next, and a joint mold can accurately abut against the position of each joint seam on the inside of the elbow joint semi-finished product, wherein the joint mold is set between the positioning molds, each The joint seams are respectively exposed outside the positioning molds, and the joint molds still separately provide inert gas (such as nitrogen ...) to the inside of each joint seam; finally, drive The automatic welding machine enables one of the welding guns of the automatic welding machine to weld the joints separately along the axial direction of the elbow joint outside the two positioning molds. At this time, the joint molds respectively weld the joints. The inert gas provided inside the seam The welding body can effectively avoid excessive oxidation of the welding position due to high temperature. In this way, the welding gun can quickly and accurately form a welding bead on the two corresponding sides along the axial direction of the elbow joint, so as to quickly and gasily. The elbow joint semi-finished products are densely welded and assembled into the elbow joint final product.

Another object of the present invention is to enable the positioning molds, the connection molds, and the semi-finished products of the elbow joints positioned on the joints to be welded along the bends when the welding torch of the automatic welding machine separately welds the joints. The axial rotation of the pipe joint greatly reduces the displacement range and range of the welding torch when welding each of the joints, thereby effectively improving the efficiency and accuracy of welding of the joints.

Another object of the present invention is to provide a device capable of automatically welding and welding a combined elbow joint in the axial direction. The device includes a machine table, a bearing seat, two positioning molds, a translation mechanism, a joint mold, and an inertia. A gas supply mechanism, a negative pressure generating mechanism, and an automatic welding machine; wherein, the bottom of the machine is fixed to a plane; the bearing seat is fixed to a position near the top of the machine, and the upper direction is horizontal. A plurality of supporting load bars are provided; each of the positioning molds is horizontally displaceable and installed on the load bars, and the positioning molds are respectively recessed with a positioning groove on a side corresponding to each other, each of the positioning grooves The configuration is respectively matched with the configuration of the corresponding semi-finished elbow joint, so that the semi-finished elbow joint can be put into each of the corresponding positioning molds and grooves, and each of the positioning grooves is still provided. There is at least one negative pressure hole; the translation mechanism is installed on the machine and is connected to each of the positioning molds, so that each of the positioning molds can be relatively displaced, and each of the positioning molds is displaced to it. Correct When the sides are in contact with each other, the edges of the two corresponding sides of the semi-finished elbow joints will also abut against each other to form two joint seams, and the outer edges of each joint seam are respectively exposed outside the positioning molds; The engagement mold is installed on the load-bearing rod between the positioning molds, and is on the corresponding side of the positioning molds. When abutted together, the engagement mold will accurately abut the position of the inner side of the semi-finished products of the elbow joints corresponding to each of the engagement seams, and a plurality of inert gas ejection holes are provided thereon; the inert gas supply mechanism, It is installed on the machine and connected with the joint mold to supply inert gas (such as nitrogen) to the joint mold, and spray to the inside surface of the semi-finished product of equal elbow joint through the ejection holes. Corresponding to the position of each joint, in order to effectively avoid the problem of excessive oxidation due to high temperature when welding each joint, the negative pressure generating mechanism is installed on the machine. And each is connected with each of the positioning molds so as to generate negative pressure in each of the positioning grooves through each of the negative pressure holes for adsorbing the corresponding semi-finished products of the elbow joints, so that each semi-finished product of the elbow joints Can be accurately positioned in the corresponding positioning mold and groove; the automatic welding machine is installed on the machine, including a welding gun, a camera element and a laser positioning part, the automatic welding machine can be based on The camera The image captured by the software accurately reads the precise coordinate position of each joint, and then uses the laser positioning member to calibrate the precise coordinate position of each joint with the laser, and then drives the welding gun in the two positioning molds. Outside each of the precise coordinate positions along the axial direction of the elbow joint, welding processing is performed one by one to quickly and accurately along the axial direction of the elbow joint, respectively, the joint seams on the two corresponding sides thereof. A welding bead is formed at the position, so that the semi-finished product of the elbow joint is quickly and air-tightly combined into a finished product of the stainless steel elbow joint.

Yet another object of the present invention is that the bearing base is pivotally located near the top of the machine and can be driven and rotated by a rotating mechanism provided on the machine, so that the positioning molds, The joint mold and the semi-finished products of the elbow joints positioned thereon can be rotated along the axial direction of the elbow joints, so as to greatly reduce the displacement range and range of the welding torch when welding each of the joint seams, thereby effectively improving Efficiency and accuracy of welding each joint.

For the convenience of the review committee, And its purpose, for further understanding and understanding, the following examples are given in conjunction with the drawings to explain in detail:

[Learning]

10‧‧‧ seat

11‧‧‧ Power Unit

12‧‧‧ Turntable

20‧‧‧Fixture

201‧‧‧ Hollow Cantilever Frame

21, 31‧‧‧ base

22‧‧‧ Upright Rod

23‧‧‧ cross bar body

24‧‧‧ Actuating rod

241‧‧‧parallel splint

242‧‧‧handle

3‧‧‧Learn the damper adjustment mechanism

30‧‧‧ Pivot

32‧‧‧Press the handle

320‧‧‧ one end

321‧‧‧Embedded card component

322‧‧‧ the other end

33‧‧‧Adjust the groove

331‧‧‧Adjust the scale

35‧‧‧Automatic welding machine

36‧‧‧welding torch

37‧‧‧ Guide Needle

39‧‧‧Linking lever

4‧‧‧Exhaust adjustment device

41‧‧‧Exhaust duct

43‧‧‧Adjust the damper

5‧‧‧ elbow joint

5’‧‧‧ elbow joint embryo

51‧‧‧Joint seams

52‧‧‧Fusion Weld Bead

501, 502‧‧‧ Semi-finished elbow joint

C‧‧‧pipe

S‧‧‧welding point

〔this invention〕

501, 502‧‧‧ Semi-finished elbow joint

511, 512‧‧‧ corresponding edges

521, 522‧‧‧Positioning missing slot

60‧‧‧bearing seat

61、62‧‧‧Positioning mold

611‧‧‧Negative pressure hole

610, 620‧‧‧ positioning groove

63‧‧‧Connecting mold

631‧‧‧Inert gas ejection hole

641, 642, 643‧‧‧‧bearing rod

7‧‧‧Automatic welding machine

70‧‧‧ welding torch

71‧‧‧ camera element

72‧‧‧laser positioning parts

80‧‧‧machine

901 ~ 903‧‧‧step

A‧‧‧translation mechanism

B‧‧‧Inert gas supply agency

D‧‧‧ negative pressure generating mechanism

R‧‧‧ rotating mechanism

X‧‧‧ excess pipe material

Figure 1 is a schematic diagram of a conventional damper adjusting mechanism; Figure 2 is a schematic diagram of a conventional exhaust gas adjusting device; Figure 3 is a schematic diagram of a conventional stainless steel elbow joint finished product; Figure 4 is a conventional automatic welding mechanism Schematic diagram; Figure 5 is a schematic diagram of a conventional stainless steel elbow joint semi-finished product welded to form a finished stainless steel elbow joint; Figure 6 is a schematic diagram of a conventional automatic welding mechanism for the fusion welding of stainless steel elbow joint semi-finished products; Another schematic diagram of the conventional automatic welding mechanism for fusion welding of semi-finished products of stainless steel elbow joints; FIG. 8 is a schematic diagram of the original embryo of stainless steel elbow joints; FIG. 9 is an automatic fusion of a preferred embodiment of the present invention Partially exploded schematic diagram of welding equipment; FIG. 10 is a schematic diagram of the working method flow of another preferred embodiment of the present invention; FIG. 11 is an assembly schematic diagram of an automatic welding equipment of a preferred embodiment of the present invention; and FIG. 12 It is a schematic structural diagram of the semi-finished products of the stainless steel elbow joints in another preferred embodiment of the present invention.

The invention is to provide a tool capable of automatically welding and welding a combined elbow joint in the axial direction. Method, please refer to Figure 9, which is used to punch semi-finished stainless steel elbow joints 501, 502 made by the upstream processing plant and has a semi-circular cross section. Please refer to Figure 5, The method of automatic fusion welding to form a finished product of elbow joint 5 includes the following steps, please refer to Figure 10: (901) First, please refer to Figure 9 again, using two positioning molds 61 corresponding to each other , 62, the negative-pressure adsorption manner, the elbow joints semi-finished products 501, 502 were respectively adsorbed and positioned in each of the positioning molds 61, 62; (902) 复, please refer to Figure 9 to drive each Position the molds 61 and 62 so that they are displaced relative to each other (as shown by the two opposite unidirectional arrows on Figure 9) until the corresponding sides of the two positioning molds 61 and 62 abut against each other. The two corresponding edges 511 and 512 on the joint semi-finished products 501 and 502 can also abut each other to form two joint seams 51 (as shown in FIG. 5), and a joint mold 63 can accurately abut against such elbow joints. The inside of the semi-finished products 501 and 502 corresponds to the position of each of the joint seams 51, wherein the joint mold 63 is Between the positioning molds 61 and 62, each of the joint seams 51 is exposed outside the positioning molds 61 and 62, and the joint mold 63 still provides an inert gas (such as nitrogen) to the inside of each joint seam 51, respectively. ... etc.); (903) Finally, please refer to FIG. 9 to drive an automatic welding machine 7 so that one of the welding torches 70 on the automatic welding machine 7 can run along the two positioning molds 61 and 62. In the axial direction of the elbow joint 5, each of the joints 51 is welded and assembled. At this time, the joint mold 63 can respectively prevent the inert gas provided on the inside of each of the joints 51, which can effectively avoid the welding position. High temperature and excessive oxidation. In this way, the welding torch 70 can quickly and accurately form a beautiful and air-tight welding bead on its two corresponding sides along the axial direction of the elbow joint 5, so that The The semi-finished products 501 and 502 of the equal elbow joint are welded and assembled into the finished elbow joint 5.

According to the above, the above is only a working method of one of the preferred embodiments of the present invention, but the actual implementation of the present invention is not limited to this, and the related actions in the foregoing steps can be increased or decreased according to actual needs. Therefore, all other equivalent changes that can be easily considered by those skilled in the relevant art after considering the foregoing steps and related actions of the present invention should not depart from the protection scope of the present invention, and hereby take another preferred of the present invention. The working method of the embodiment is taken as an example, and the brief description is as follows: In another preferred embodiment of the present invention, please refer to FIG. 9 for reference, in order to greatly simplify the welding torch 70 to weld each of the joints 51 separately. The amplitude and range of the time displacement. When the welding gun 70 of the automatic welding machine 7 performs fusion welding on each of the joints 51, the positioning molds 61 and 62, the joint mold 63, and the positioning molds on the joints 51 can be positioned. The semi-finished pipe joints 501 and 502 rotate along the axial direction of the pipe joint 5 (as shown by the double-headed arrow on FIG. 9). In this way, the welding gun 70 can be positioned at a certain point along the pipe joint. 5 of the axial direction of each of the joints 51 The welding and welding combination can greatly reduce the displacement range and range of the welding torch 70 when welding each of the joints 51, thereby effectively improving the efficiency and accuracy of the welding and welding of each of the joints 51. The semi-finished products 501, 502 of these elbow joints are quickly and air-tightly welded to form the stainless steel elbow joint 5 as a finished product.

Another preferred embodiment of the present invention is to provide a device capable of automatically welding and welding a combined elbow joint in the axial direction, as shown in FIG. 11. The device includes a machine 80, a bearing base 60, two Positioning dies 61, 62, a translation mechanism A, a connection mold 63, an inert gas supply mechanism B, a negative pressure generating mechanism D, and an automatic welding machine 7; among them, please refer to FIG. 11 for the machine. The bottom of 80 is fixed to a plane (such as the ground); the bearing base 60 is fixed to a position close to the top of the machine 80, and a plurality of support bars 641, 642, 643 are horizontally arranged on the upper side; Each of the positioning molds 61 and 62 is horizontally displaceably mounted on the load-bearing rods 641, 642, and 643, and the positioning molds 61 and 62 are respectively recessed with a positioning groove 610 on a side corresponding to each other. 620. The configuration of each of the positioning grooves 610 and 620 matches the configuration of the corresponding semi-finished product of the elbow joint 501 and 502 respectively. Please refer to FIG. 9 to ensure that the semi-finished products of the elbow joint 501 and 502 can Placed and positioned to the corresponding positioning molds 61, 62 and positioning grooves 610, respectively , 620, and each of the positioning grooves 610, 620 is provided with at least one negative pressure hole 611; please refer to FIG. 9 and FIG. 11, the translation mechanism A is installed on the bearing base 60, And is connected to each of the positioning molds 61 and 62 so that each of the positioning molds 61 and 62 can be displaced relative to each other (as shown by two opposite unidirectional arrows on FIG. 9), and each of the positioning molds 61 and 62 is displaced When the corresponding sides abut against each other, please refer to Figures 5, 9, and 11 again. The corresponding edges 511 and 512 on the two corresponding sides of the semi-finished elbow joints 501 and 502 will also abut each other. Two joint seams 51 are formed, and the outer edges of each joint seam 51 are respectively exposed to the positioning molds 61 and 62; the joint mold 63 is also movably installed on the bearing rods 641, 642, 643 and When the positions between the positioning molds 61 and 62 abut against each other on the corresponding sides of the positioning molds 61 and 62, the engaging mold 63 will accurately abut against the semi-finished products 501 and 502 of the elbow joints. The side corresponds to the position of each of the joint seams 51, and a plurality of inert gas ejection holes 631 are provided on the side; As shown in Figs. 9 and 11, the inert gas supply mechanism B is installed on the machine 80 and is connected to the engagement mold 63 to supply inert gas (such as nitrogen ...) to the The joint mold 63 is sprayed to the position corresponding to each of the joint seams 51 on the inside surface of the elbow joint semi-finished products 501 and 502 through the gas injection holes 631 to perform fusion welding on each of the joint seams 51. In this case, the problem of excessive oxidation of each of the welded parts due to high temperature can be effectively avoided; the negative pressure generating mechanism D is installed on the machine 80 and is connected to each of the positioning molds 61 and 62 to pass Each of the negative pressure holes 611 generates a negative pressure in each of the positioning grooves 610 and 620 to adsorb the corresponding semi-finished products 501 and 502 of the elbow joint, so that each semi-finished product 501 and 502 of the elbow joint can be accurately It is sucked and positioned in the corresponding positioning molds 61 and 62 and positioning grooves 610 and 620. The automatic welding machine 7 is installed on the machine 80 and includes a welding gun 70, a camera element 71, and a laser. Positioning piece 72, the automatic welding machine 7 It can accurately judge and read the precise coordinate position of each joint seam 51 based on the image captured by the camera element 71, and then use the laser positioning member 72 to calibrate the precise coordinate position of each joint seam 51 by laser. The welding torch 70 is driven along the axial direction of the elbow joint 5 outside the two positioning dies 61 and 62 to execute the welding process one by one to the precise coordinate positions, so as to quickly and accurately follow the elbow joint 5 In the axial direction, a beautiful and air-tight welding bead is formed at each of the joints 51 on the two corresponding sides, thereby quickly and air-tightly combining these elbow joints 501 and 502 into a stainless steel elbow joint. 5finished products.

According to the above, the above is only one of the best embodiments of the device of the present invention, but the actual implementation of the present invention is not limited to this, and the aforementioned related components and mechanisms can be increased or decreased according to actual needs. Any equivalent change that can be easily considered by those skilled in the relevant technical field after considering the foregoing structure of the present invention should not depart from the protection scope of the present invention, and hereby take the equipment of another preferred embodiment of the present invention. As an example, the summary is as follows: In the equipment of another preferred embodiment of the present invention, please refer to FIGS. 5, 9, and 11 again. In order to greatly simplify the welding torch 70, the amplitude and range of the displacement when each of the joints 51 are welded. The bearing base 60 is pivotally located near the top of the machine 80, and can be rotated by a rotating mechanism R provided on the machine 80, so that the positioning molds 61, 62, and the joints are connected. The mold 63 and the semi-finished products 501, 502 of the elbow joints positioned thereon can be rotated along the axial direction of the elbow joint 5 to greatly reduce the welding welding of the welding seam 51 to each of the joints 51, respectively. The range and range of the displacement can effectively improve the efficiency and accuracy of fusion welding the joints 51, so as to quickly and air-tightly weld the semi-finished products of the elbow joints 501 and 502 into the stainless steel elbow. Connector 5 finished.

In addition, in the method and equipment of another preferred embodiment of the present invention, in order to greatly increase the accuracy of positioning the semi-finished elbow joints 501 and 502 in the positioning molds 61 and 62 so that When the molds 61 and 62 are moved to their corresponding sides abutting each other, please refer to Figures 5, 9 and 11 to ensure that the corresponding edges 511 on the two corresponding sides of the semi-finished elbow joints 501 and 502 can be ensured. , 512 will also accurately abut each other to form two ideal joint seams 51. When the manufacturer entrusts an upstream processing plant to press-mold and produce these semi-finished elbow joints 501 and 502, they can be semi-circular in the cross sections. The two ends of the semi-finished elbow joints 501 and 502, as shown in FIG. 12, are respectively provided with a positioning slot 521 and 522, so that the semi-finished elbow joints 501 and 502 are attracted to each of the positioning molds 61 and 62. Each of the positioning grooves 610 and 620 can be matched with the corresponding structure of each of the positioning molds 61 and 62 or the corresponding configuration of each of the positioning grooves 610 and 620, and can always be positioned in a more precise position, thereby ensuring that Production quality of 5 stainless steel elbow joints. In this way, please refer to FIG. 12 again. After these semi-finished elbow joints 501 and 502 are welded and combined into one body, the excess stainless steel pipe X only needs to be cut off to obtain the required stainless steel elbow pipe. Connector 5 finished.

The above are only a few preferred embodiments of the present invention. However, the technical features of the present invention are not limited to this. Those skilled in the related art can easily think about it after considering the technical content of the present invention. Effective changes should not depart from the protection scope of the present invention.

Claims (7)

A method capable of automatically welding and welding a combined elbow joint in the axial direction, which is used for semi-finished stainless steel elbow joints made by the upstream processing plant and having a semi-circular cross section, and is automatically welded to form a elbow joint. The manufacturing method of the finished product includes the following steps: using two corresponding positioning molds to adsorb and position the elbow joint semi-finished products into each of the positioning molds in a negative pressure adsorption manner; driving each of the positioning molds to make two The two are relatively displaced until the corresponding sides of the two positioning molds abut against each other, so that the two corresponding edges on the semi-finished products of the elbow joints can also abut against each other to form two joint seams, and make the one joint mold accurate. Abut against the position on the inside of the semi-finished products of the elbow joints corresponding to each of the joints; wherein the joint mold is set between the positioning molds; each of the joints is exposed outside the positioning molds; the The joint mold still supplies inert gas to the inside of each joint seam; and drives an automatic welding machine so that one of the welding guns on the automatic welding machine can be outside the two positioning molds. In the axial direction of the elbow joint, each of the joints is welded and welded one by one. At this time, the joint mold can separately provide the inert gas provided on the inner side of each of the joints, which can effectively avoid each of the welded parts due to high temperature. Excessive oxidation allows the welding torch to form an air-tight welding bead on its two corresponding sides along the axial direction of the elbow joint, thereby quickly and air-tightly welding the semi-finished product of these elbow joints into the elbow. Finished connector. The method according to claim 1, wherein when the welding torch of the automatic welding machine welds each of the joints separately, the method further includes the following steps: making the positioning molds, connecting the molds, and positioning the bends on them. The semi-finished pipe joint can be rotated along the axial direction of the elbow joint to greatly reduce the displacement range and range of the welding torch when each welding joint is welded, thereby improving the efficiency of welding and welding each joint. And accuracy. The method according to claim 1 or 2, wherein the two ends of the semi-circular elbow joint semi-finished products with cross sections are respectively provided with positioning gaps so that the semi-finished elbow joint semi-finished products are attracted to each of the When positioning the positioning grooves of the mold, the corresponding structure of the positioning molds or the corresponding configuration of the positioning grooves can always be positioned at a more precise position. A device capable of automatically welding and welding a combined elbow joint in an axial direction includes: a machine, whose bottom is fixed to a plane; and a bearing seat, which is fixed to a position near the top of the machine, on which A plurality of supporting load bars are provided along the horizontal direction; two positioning molds, each of which is horizontally displaceably mounted on the load bars, and the positioning molds are respectively recessed with a positioning recess on one side corresponding to each other. The grooves and the configuration of each of the positioning grooves are respectively matched with the configuration of the corresponding elbow joint semi-finished product, so that the elbow joint semi-finished products can be respectively placed and positioned in each corresponding positioning mold; a translation mechanism It is installed on the machine and is connected with each of the positioning molds, so that each of the positioning molds can be relatively displaced on the bearing rod, and each of the positioning molds is shifted to the corresponding side to abut each other. At the same time, the edges on the two corresponding sides of the semi-finished products of these elbow joints will also abut each other to form two joint seams, and the outer edges of each joint seam are respectively exposed to the positioning molds; water It is displaceably installed on the bearing rod between the positioning molds, and when the corresponding sides of the positioning molds abut against each other, the joint mold will accurately abut against the semi-finished product of the elbow joint. The inner side corresponds to the position of each of the joints and is provided with a plurality of inert gas ejection holes; an inert gas supply mechanism is installed on the machine and is connected to the joint mold to inert gas Supplied to the joint mold, and through the ejection holes, sprayed to the inner side surface of the semi-finished product of the equal elbow joint corresponding to each of the joint seams to perform fusion welding for each of the joint seams When combined, it can effectively avoid excessive oxidation of each of the welding parts due to high temperature; a negative pressure generating mechanism is installed on the machine and is connected with each of the positioning molds so as to be in each of the positioning grooves. A negative pressure is generated inside to adsorb the corresponding semi-finished product of the elbow joint, so that each semi-finished product of the elbow joint can be accurately adsorbed and positioned in each corresponding positioning mold; and an automatic welding machine is installed On this machine, one of the welding torches on the automatic welding machine can perform fusion welding on each of the joints along the axial direction of the elbow joint outside the two positioning molds to follow the axis of the elbow joint. An air-tight welding bead is formed on each of the two corresponding sides, so that the semi-finished product of the elbow joint is quickly and air-tightly combined into a finished elbow joint. The device according to claim 4, wherein the automatic welding machine further includes a camera element and a laser positioning member, and the automatic welding machine can accurately judge and read out each of the joints according to the image captured by the camera element. Precise coordinate position, and then through the laser positioning member to calibrate the precise coordinate position of each of the joints, and then drive the welding gun outside the two positioning molds along the axis of the elbow joint respectively The fusion welding process is performed at the exact coordinate position to quickly and accurately form the welding bead on the two corresponding sides along the axial direction of the elbow joint. The device according to claim 4 or 5, wherein the bearing base is pivotally arranged near the top of the machine and can be driven and rotated by a rotating mechanism provided on the machine, such that The positioning mold, the joint mold and the semi-finished products of the elbow joints positioned thereon can be rotated along the axial direction of the elbow joints, thereby greatly reducing the displacement range and range of the welding torch when welding each of the joints one by one. . The device according to claim 6, wherein two ends of the elbow joint semi-finished products are respectively provided with positioning notches, so that when the elbow joint semi-finished products are attracted to each of the positioning grooves of each of the positioning molds, It can match the corresponding structure of each positioning mold or the corresponding configuration of each positioning groove, and can always be positioned at a more precise position.