JPS6027480A - Welding device for kitchen sink - Google Patents

Abstract

PURPOSE:To perform easily and quickly a seam welding treatment by mounting a sink water tank and a sink top plate in a superposed state on a table and subjecting the same to welding between a rotary electrode plate and a stationary electrode. CONSTITUTION:A sink water tank A and a sink top plate B are set by means of a supporting base 43 on a working table 4. The top end edge of the base 43 contacts with the bottom surface of the annular parts D which are superposed on each other. A stationary electrode 44 for seam welding is disposed to the top end edge of said base. The table 4 is moved upwared to press a rotary electrode 27 atop the parts D, then the parts D are pressed and grasped between the electrode plate 27 and the electrode 44. A motor 20 for a traveling track is started to move a traveling track 12 along a profiling die 9, thereby moving rotationally the plate 27 in contact with the plate B. Electricity is fed thereto and continuous spot welding is repeated by cooperation with the electrode 44, by which the parts D are seam-welded and the tank A is united to the plate B.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding device for a sink, and more specifically, a sink welding device for manufacturing a sink tank, generally called a sink, from a stainless steel plate, and for welding and fixing a sink top plate thereto. Regarding equipment.

In a sink, when the sink tank is manufactured by deep drawing a stainless steel plate, the sink tank (2) and sink top plate (B) are made as separate parts as shown in Figure 6, and the upper edge of the tank after deep drawing is Conventionally, the flange part (C) and the top plate (B) are overlapped and the mutual annular overlapping part (part to be welded) (D) is seam welded to integrate them. In order to do this, it is necessary to feed the welding machine along the mutual annular overlap portion (D), or to feed the fixed welding machine to the sink water tank and the sink top plate. However, if the sink is small, there is no problem with the above-mentioned feeding operation, but if the sink tank (A) or the sink top plate (B) becomes large, it will take a considerable amount of time and effort to manually perform the above-mentioned feeding process. This requires a troublesome operation and does not allow accurate welding, which hinders the mass production of sinks through efficient welding.

An object of the present invention is to automatically and accurately feed a welding machine along a mutual annular overlap between a sink tank and a sink top plate fixed on a welding work table. An object of the present invention is to provide a welding device that can perform welding processing over a long period of time.

The configuration of an embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

The present invention is an apparatus using a frame-shaped copy mold made similar to the mutual annular overlapping part (welded part) (D) of the sink water tank (4) and the sink top plate (B), and the floor ( 1) A fixed support (3) is erected on top via a base (2), and this fixed support (3)
A horizontal support arm (5) extends from the upper end toward a position directly above the welding work table (4), and a horizontal movement guide rail (6) is fixed to this horizontal support arm (5).

This guide rail (6) is used to carry the welding device of the present invention onto and from the work table (4). The copy type 0 (9) is suspended so that it can travel. The scream is a trochanter (7)
The support plate (8), dll, is a suspension rod connected to the support plate, and suspends the copy mold (9). Further, a copying type 0 (9) traveling truck α4 is suspended. This traveling truck (2) is of a profiling type (so-called mole type, which is suspended by fitting over the protrusion type), and its trunk claim has a top edge (9a) of the profiling type (9). The driving trochanter 04) that engages, the supporting trochanter αυ that similarly engages the lower end edge (9b) of the copying die (9), and the upper roller that supports the copying die side wall (9C) by sandwiching it from both the inside and outside. child vs. cry aη, lower trochanter vs. α
QQ1, of which the upper trochanter pair 013αη is forcibly driven. That is, a motor (A) is mounted on the top surface of the traveling truck (2), and the rotational force of this motor (4) is input to the zero angle of the drive trochanter through the rotational force transmission cylinder Qυ. The gear box @ (a) is used to take it out and rotate the upper trochanter pair qQQη. Further, at least one of the lower trochanter pairs 0 and 09 is made of a rubber trochanter, which contributes to preventing slipping when traveling on a running track. Furthermore, the upper trochanter pair ae (17),
It goes without saying that the lower trochanter pair α8) (19) performs derailing and steadying of the traveling truck α2, and the support trochanter aQ is used for traveling guidance. (2) of the running track α is provided with a pedestal (to) at its lower part, and a pair of bosses (7) and (c) are hung from this pedestal through brackets (c) and (c), respectively. A rotary shaft (C) is rotatably inserted and supported over the boss portion (C), and a rotating electrode plate Q is fixed to the rotary shaft between both bosses.

Current for seam welding is supplied to this rotating electrode plate (2) via a mechanism described later, so the above-mentioned pedestal eυ is connected to an electrically insulating plate (
28a) is sandwiched in a sandwich configuration to block the flow of current upwards. For the same reason, the welding work table (4) also has a sandwich structure with electrically insulating plates (4a) sandwiched between them. Furthermore, copying type (9
) is provided with a vertical shaft (C) made of an insulator, and one end of the rotating shaft @ is led out directly below the vertical shaft ( ), and the vertical shaft - and the rotating shaft beam are connected to the first They are connected by a link mechanism shown in FIGS. 2 and 4. That is, the first horizontal floating link (2) is attached to the vertical axis (to), the second horizontal floating link (clυ) is attached to the rotating shaft (-), and both links (2) and 3υ are connected to the third horizontal floating link (2). Connected with This linkage mechanism is of the copying type (
9) is provided in order to absorb the continuous distance change between the vertical axis and the rotating electrode plate (c) when moving according to the floating expansion and contraction movement as shown in the solid line and chain line in Figure 4, This secures a power supply path from the electric wire θ2 provided in the vertical shaft (E) to the rotating electrode plate (A). Therefore, each link (to) 6υ) and the rotating shaft are made of a conductive material, and the current supplied from the electric wire (6) side in the vertical shaft flows to the rotating electrode plate (sha) through these. It is also necessary to supply power to the aforementioned motor shaft for the traveling truck to control its rotation. Therefore, as shown in Figure 5, three ball bearings are installed on the insulating vertical shaft.
Power cord (to) 67 embedded in the vertical axis of the inner race of each ball bearing g4H (7)
) (to) respectively, while connecting ball bearing c(3
Cord 4Ql tied to the outer lace of (b) to)
(41) is connected to the traveling truck motor (A). Therefore, each ball bearing &1 (7) acts as a current collector. The reason why three ball bearings are used is because a three-phase AC power source is used as the power source.

If such power supply paths for seam welding and the motor are secured, the traveling truck α2 does not have to run while dragging the power cord for a long time during the welding work, which is effective for the work.

In use, the sink water tank (A) and sink top plate (B) are set on the welding work table (4) via the supporting stand C3. In this case, the upper end edge of the supporting architrave shall be in contact with the lower surface of the mutual annular overlapping part (D) in Fig. 6, and a fixed electrode for seam welding (Fig. 2, 3 )
has been set up. On the other hand, the integral movable part including the copying die (9) and the traveling track 021 is carried directly above the welding work table (4) along the guide rail (6), and is fixed at the carrying position with an appropriate locking means. . At this time, the planar centers of the sink tank cA), the sink top plate (B), and the copy mold (9) are made to coincide in the vertical direction as shown by the axis Y-Y' in FIG. Also, each power cord of the vertical shaft (to) @
(To) (6) are respectively connected to the power source, and the fixed electrode (3) is also connected to the power source. Next, raise the welding work table (4) with the cylinder device) (shown in Figure 1), and
As shown in the figure, the rotating electrode plate (goods) is brought into contact with the upper surface of the mutual annular overlapping part (D), and thereby the mutual annular overlapping part (effect) is applied between the rotating electrode plate (A) and the fixed electrode 04. Set it so that it is clamped.

Thereafter, the traveling truck motor 611 is started to move the traveling truck Q';4 along the copy pattern (9),
In addition, the rotary electrode plate (2) is rotated by contact with the flow top plate (B), and by supplying power to this, continuous spot welding is repeated in cooperation with the fixed electrode θ blue, and the mutual annular overlap part ( D) is seam welded to integrate the sink tank (N and sink top plate fB). Also, during this welding, the rotation axis -
Cooling water is sent from the water supply channel θ51 (shown in FIG. 2) provided at the axial center position of the rotary electrode plate (A), and is sprayed onto the rotating electrode plate (A).

According to the above embodiment, power is supplied to the rotating electrode plate (a) by the link mechanism, and this link mechanism is connected to the vertical shaft and the fixed electrode plate as the traveling truck a moves. (A), so even if the shape and size of the sink tank (A and sink top plate fB) to be welded change, this sink tank (A)
) can be used to weld the sink tank (A) and the sink top plate TB) without any problem.

As is clear from the above description, the present invention provides for mounting a sink tank and a sink top plate to be welded together on a welding work table in a mutually overlapping state via a supporting frame, and The traveling track is moved along a pattern similar to the overlapping part, and the rotating electrode plate installed on the track is moved, and the above-mentioned mutual annular shape is moved between the rotating electrode plate and the fixed electrode on the white side of the support. The overlapping part is welded, and the -a angle of the rotating electrode plate relative to the sink tank and sink top plate fixed to the welding work table is accurately regulated by the copy mold, so a large sink is manufactured. The seam welding process can be performed easily, quickly and accurately even in cases where the seam welding process is simple, quick and accurate, thus contributing to the mass production of sinks.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the welding device according to the present invention, Fig. 2 is an enlarged front view of the main parts, Fig. 3 is a side view of the whistle 2, and Fig. 4 is the main part of Fig. 2. FIG. 5 is an enlarged cross-sectional view of a main part showing an example of a current collecting mechanism, and FIG. 6 is a top view showing a welded portion between a sink water tank and a sink top plate. (4)...Welding work table, (9)...Copying die, O
3... Running track, (a)... Rotating electrode plate, -...
... Fixed electrode, (A) ... Sink tank, (B) ... Sink top plate, (C) ... Water tank upper edge flange, (D) ...
- Mutual cyclic polymerization part. Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] (1) In a method for seam welding the mutual annular overlapping part of a sink water tank and a sink top plate overlaid on the upper flange portion of the sink tank, the sink tank and the sink top plate are mounted on a welding work table via a support frame. At the same time, a frame-shaped copying die similar to the mutual annular overlapping portion is fixed at a position above the welding work table, a traveling track that moves along the copying die is suspended, and the above-mentioned A sink equipped with a rotating electrode plate for seam welding that contacts the mutual annular overlapping part from above, and a fixed electrode that contacts and supports the lower surface of the mutual annular overlapping part on the upper edge of the support base. welding equipment.