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KR-20260065080-A - Provisional welding apparatus

KR20260065080AKR 20260065080 AKR20260065080 AKR 20260065080AKR-20260065080-A

Abstract

The present invention relates to a tack welding device, and more specifically, to a tack welding device in which the supply of a workpiece and tack welding are performed automatically. The present invention discloses a tack welding device comprising: a fixing jig part (100) provided on a base (5) and on which a workpiece (1) to be welded is placed and fixed; a tack welding robot (200) that performs welding on some of the welding positions between the workpieces (1) placed on the fixing jig part (100); and a purge gas supply part (300) provided on the base (5) and in contact with the rear end of the workpiece (1) to supply purge gas.

Inventors

  • 김호진
  • 김태욱
  • 심우재
  • 김정우

Assignees

  • 주식회사 원익홀딩스

Dates

Publication Date
20260508
Application Date
20241031

Claims (8)

  1. A tack welding device for performing tack welding on a workpiece (1), A fixing jig part (100) provided on a base (5) and on which the welding target (1) is seated and fixed; A tack welding robot (200) that performs welding on some of the welding positions between the welding targets (1) seated on the fixed jig part (100); A tack welding device characterized by including a purge gas supply unit (300) that is provided on the base (5) and supplies purge gas by contacting the rear end of the welding target (1).
  2. In claim 1, The above fixed jig part (100) is, A tack welding device characterized by including a seating portion (110) on which at least a portion of the above-mentioned workpiece (1) is seated, and a fixing portion (120) provided on at least one side of the seating portion (110) to fix the above-mentioned workpiece (1).
  3. In claim 2 A tack welding device characterized by additionally including a covering part (400) that is positioned adjacent to the fixed jig part (100) and covers the upper part of the welding target (1).
  4. In claim 3, The above-mentioned covering portion (400) is, A tack welding device characterized by including a covering member (410) that covers the upper part of the welding target (1) and a driving unit (420) that moves the covering member (410).
  5. In claim 4, The above driving unit (420) is, A tack welding device characterized by including a driving body (421) positioned adjacent to the fixed jig part (100) in the base (5), and a driving arm part (422) installed to be vertically and rotatable on the driving body (421) and coupled with the covering member (410).
  6. In claim 2, The above fixed jig part (100) is a plurality of, A plurality of the above fixed jig parts (100) are, A tack welding device characterized by having the above-mentioned seating portions (110) of different shapes.
  7. In claim 3, The above welding robot (200) is, A tack welding device characterized by including a tack welding section (210) for performing tack welding on the above-mentioned workpiece (1), and a vision inspection section (220) for inspecting the alignment of the welding position of the above-mentioned workpiece (1).
  8. In claim 7, The above welding robot (200) is, A tack welding device characterized by inspecting the alignment of the welding position through the vision inspection unit (220) after covering the welding target (1) through the covering unit (400) while the welding target (1) is seated and fixed on the fixing jig unit (100).

Description

Provisional welding apparatus The present invention relates to a tack welding device, and more specifically, to a tack welding device in which the supply of a workpiece and tack welding are performed automatically. Welding is a method of joining two solid materials by forming direct atomic bonds between them, and it is widely used to join metal materials. Generally, a welding device performs welding work along a welding line using a welding torch or the like while the workpiece is secured by being placed on a fixing jig that holds the workpiece. To this end, conventionally, a worker proceeded with preliminary preparations for welding by directly placing one workpiece onto a fixed jig and securing it to the jig through bolting, and then directly placing another workpiece onto the fixed jig and securing it to the jig again through bolting. In addition, even after the welding was completed, the welding process was carried out in a manner where the worker manually released the bolts on the welds and directly retrieved the welds. Accordingly, conventionally, since the worker must place and bolt each welding target onto a fixed jig, there is a problem of increased work time due to prior preparation for welding and retrieval of the completed weld. In addition, since workers must manually secure each welding target, there are issues such as reduced reliability of product production due to the mixing of welding targets, low work efficiency resulting from increased working time, and increased costs. To address these issues, a system has been developed that automatically transports workpieces using a transport robot and a welding robot to perform welding; however, there is still a problem where the quality deteriorates due to misalignment between workpieces during the transport and automatic welding processes. In addition, conventional tack welding devices perform uniform welding automatically, so they have the problem of low versatility as they cannot perform welding on objects of various sizes and shapes. In addition, conventional tack welding devices have a problem in that precise alignment and contact are not achieved during the tack welding process, and consequently, inspection is not performed, leading to a significant deterioration in the quality of the main weld when alignment is off. FIG. 1 is a plan view showing the appearance of an automatic welding system according to the present invention. FIG. 2 is a plan view showing the appearance of a tack welding device according to the present invention. FIG. 3 is a plan view showing a workpiece to be welded in a fixed jig portion of a tack welding device according to FIG. 2. Figure 4 is a drawing showing the appearance of a welding robot among the tack welding devices according to Figure 2. FIGS. 5a to 5d are drawings that sequentially show the process of welding being performed by placing a workpiece on a tack welding device according to FIG. 2. FIGS. 6a and 6b are side views showing the front and rear view of a workpiece being fixed through a purge gas supply unit of a tack welding device according to FIG. 2. FIGS. 7a to 7c are drawings sequentially showing the driving process of the covering part of the tack welding device according to FIG. 2. FIG. 8 is a perspective view showing the appearance of a tube supply device according to the present invention. FIG. 9 is a rear perspective view showing the rear view of the tube supply device according to FIG. 8. FIG. 10 is a drawing showing the appearance of the tube alignment section of the tube supply device according to FIG. 8. FIG. 11 is a drawing showing the tube storage unit and the inclined frame of the tube supply device according to FIG. 8. FIG. 12 is a plan view showing the appearance of the tube alignment section of the tube supply device according to FIG. 8. FIGS. 13a and FIGS. 13b are cross-sectional views showing the appearance of a tube before and after supplying a tube through a tube delivery section of a tube supply device according to FIG. 8. FIG. 14 is a drawing showing tube supply devices of various sizes according to FIG. 8. FIG. 15 is a plan view showing the length measuring part of the tube supply device according to FIG. 8. FIGS. 16a and FIGS. 16b are drawings showing the length measuring part of the tube supply device according to FIG. 8 before and after length measurement. FIG. 17 is a plan view showing the appearance of an automatic welding device according to the present invention. FIG. 18 is a plan view showing a workpiece to be welded seated on a jig portion of an automatic welding device according to FIG. 17. FIGS. 19a to 19c are drawings that sequentially show welding being performed on a workpiece through an automatic welding device according to FIG. 17. FIGS. 20a and FIGS. 20b are drawings showing the front and rear views of the cover part of the automatic welding device according to FIG. 17. FIG. 21 is a plan view showing the appearance of the cover part of the automatic welding device