KR20030018340A - Polish system of tip for resistance welding - Google Patents

Abstract

PURPOSE: Replaced electrode by wearing in a welding process is reused by grinding in a grinding system reducing manufacturing cost. CONSTITUTION: An electrode grinding system for regenerating the electrode in a resistance welding comprises a frame(31) having a controller. A base plate(33) is supported by a supporting bar. A supplier(40) stores electrodes to grind and supplies the electrode sequentially. A clamp is provided to clamp the electrode. A grinder(80) is installed to grind the clamped electrode. A discharging hole(35) is installed in the base plate to drop the ground electrode. A storing box(37) is provided in lower side of the discharging hole.

Description

Electrode polishing system for resistance welding {Polish system of tip for resistance welding}

The present invention relates to an electrode polishing system for resistance welding, and more particularly, to an apparatus for polishing a reusable electrode, which is a consumable part, in a resistance welding apparatus.

Resistance welding is a kind of welding in which the joint is semi-melted by the resistance heat generated by flowing a large current to the joint, and the pressure is applied to the joint. Spot welding, projection welding, core welding, flash welding, etc. There are various things.

Such resistance welding is applied to the production line of automobiles as it can be automated, and in this case, most of them adopt spot welding method.

Spot welding, a kind of resistance welding, inserts an overlapping base material between a movable electrode and a fixed electrode receiving resistance heat from a welding transformer and pressurizes the electrode (Tip) to energize the base material into a semi-molten state with resistance heat. Done.

In the process of performing the welding as described above, when the electrode (Tip) to be connected to the base material is contaminated or worn out, the efficiency of welding or the welding itself becomes impossible.

In this case, resistance welding can be performed by exchanging the electrode with a new one. If any one of the movable electrode and the fixed electrode is abnormal, it may be exchanged together. Therefore, there may be unnecessary exchange. By replacing them, raw materials are wasted and the cost of resistance welding is increased.

In particular, the exchange interval of the electrode should be determined according to the welding conditions such as the energized current, energized time, pressing force and cooling, and the welding score. However, if there is a welding gun that needs to be worn and replaced in the first welding line, the entire electrode of the line is replaced. More and more electrodes are used, which leads to an increase in production costs.

In addition, as mentioned, there are electrodes that can be used so far, but there is no polishing device to reuse them, which causes disposal.

Accordingly, the present invention has been invented to solve the above problems and provides a polishing system for reusing the electrodes that can be used among the electrodes worn and exchanged during the welding process to reduce the production cost by recycling the electrodes. The purpose is to make it work.

1 is a perspective view showing a resistance welding electrode polishing system to which the technique of the present invention is applied.

FIG. 2 is a plan view illustrating a resistance welding electrode polishing system applied to FIG. 1. FIG.

FIG. 3 is a side view of the polishing machine of the electrode welding system for resistance welding applied to FIG. 2. FIG.

* Description of the symbols used in the main parts of the drawings *

30; Polishing system

33; Base plate

40; feeder

42; cartridge

60; clamp

66; 1 clamp

70; 2 clamp

80; Grinder

85; Polishing Tool

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the preferred embodiment of the present invention for achieving the above object.

1 is a perspective view showing a resistance welding electrode polishing system to which the technique of the present invention is applied, FIG. 2 is a plan view of the resistance welding electrode polishing system applied to FIG. 1, and FIG. 3 is a resistance welding electrode polishing applied to FIG. 2. The grinding | polishing machine of a system is demonstrated as a block diagram seen from the side.

In the present invention, it is characterized in that the polishing system 30 for reusing the electrode which is a consumable part in the resistance welding device.

The polishing system 30 is;

A base plate 33 which is erected by a support bar 32 is installed above the frame 31 provided with a built-in controller, and the base plate 33 stores the electrode 34 to be polished and is sequentially supplied. Clamp 60 to hold the feeder 40 and the electrode 34 to be supplied to be polished, the grinder 80 is provided to polish the clamped electrode is installed.

The base plate 33 is provided with a discharge hole 35 through which the polished electrode 34 can fall, and a chute 36 for discharging the discharged electrode 34 is installed below the base plate 33 and the chute 36 At the end of the) is provided with a storage box 37 for storing the discharged electrode (34).

The feeder 40 has a cartridge 42 having an exit 41 open at the front and a block at the rear to accommodate the plurality of electrodes 34 in an upright position, and the cartridge 42 In the interior of the spring 43 is built so as to naturally push the accommodated electrode 34 to the outlet 41.

The clamp 60 is installed on both sides of the outlet 41 of the cartridge 42, one is moved forward and backward by the cylinder 61 provided at the rear to move the electrode 34 to the polishing point (P) One clamp (65) having a finger (63) having a clamp groove (62) formed at the distal end thereof is provided.

The other is provided with a holder 67 having a receiving groove 66 so as to cooperate with the finger 63 of the one clamp 65 to hold the electrode 34 at a position opposite to the one clamp 65; The configuration 67 includes two clamps 70 for moving the polished electrode 34 from the polishing point P to the discharge hole 35 formed in the base plate 33 by the cylinder 68.

The grinder 80 is provided with a conventional polishing tool 85 to move to the polishing point P by the horizontal cylinder 81 on the side of the cartridge 42 to polish the clamped electrode 34. In addition, the polishing tool 85 is configured to be raised and lowered by the vertical cylinder 86 fixed to the bottom surface of the base plate 33 to polish the electrode 34.

The present invention as described above;

When the used electrode 34 is to be polished, the eggs 34 are sequentially placed in the cartridge 42 in the upright state, one by one by the spring 43 installed in the cartridge 42 to the outlet 41. Prepare to be discharged.

When the polishing system 30 is operated in this state, the cylinder 61 of the one clamp 65 is operated to advance the finger 63 to insert the electrode 34 into the clamp groove 62 formed in the finger 63. The second clamp 70 moves to the clamp 70 and is connected to the receiving groove 66 formed in the holder 67 to fix the electrode 34.

Then, the polishing tool 85 located above the side of the cartridge 42 is moved to the polishing point P by the horizontal cylinder 81, and after completion of movement, the polishing tool 85 is lowered by the vertical cylinder 86 to be polished. Polishing is performed in a state where it is in contact with the electrode 34.

Of course, the time or condition required for polishing the electrode 34 can be set or controlled by a controller (not shown) in advance.

When the polishing of the electrode 34 is completed as described above, the grinder 80 and the first clamp 65 are returned to the initial position, and the two clamps 70 are discharge holes formed in the base plate 33 by the cylinder 68 ( 35, the polished electrode 34 is discharged.

As the electrode 34 discharged to the discharge hole 35 is accommodated in the storage box 37 through the chute 36, the polishing operation is completed, and the above-described operation is repeated to polish the electric bulb 34. To do the job.

The present invention as described above can provide a polishing system for polishing to reuse the electrodes that can be used among the electrodes worn and exchanged during the welding process to achieve a variety of effects, such as to reduce the production cost by recycling the electrode Invention.

Claims (4)

In constructing a polishing system 30 for reusing a consumable component electrode (electrode) in a resistance welding device; The polishing system 30 includes a frame 31 provided with a built-in controller; A base plate (33) erected by a support bar (32) above the frame (31); The base plate (33) and the feeder (40) for storing and sequentially supplying the electrode 34 to be polished; A clamp 60 for holding the supplied electrode 34 to be polished; Install a polishing machine (80) provided for polishing the clamped electrode; Forming a discharge hole 35 in the base plate 33 so that the polished electrode 34 can fall; Under the discharge hole 35, a resistance welding electrode comprising a chute 36 for guiding the discharged electrode 34 and a storage box 37 for receiving the discharged electrode 34. Polishing system. The method of claim 1; The feeder 40 includes a cartridge 42 having an outlet 41 in front to accommodate the plurality of electrodes 34 in an upright position; The electrode welding system for resistance welding, characterized in that it comprises a spring (43) which is embedded in the inside of the cartridge 42 to push the accommodated electrode (34) to the outlet (41). The method of claim 1; The clamp (60) is composed of 1,2 clamps (65, 70) constituted in pairs on both sides of the outlet (41) of the cartridge (42); The one clamp (65) has a finger (63) formed with a clamp groove (62) at the tip to move forward and backward by the cylinder (61) to move the electrode (34) to the polishing point (P). ; The two clamps 70 and the holder 67 having a receiving groove 66 so as to hold the electrode 34 in cooperation with the finger 63 of the one clamp 65 at the opposite position of the one clamp 65; ; The holder 67 includes a cylinder 68 for moving the polished electrode 34 from the grinding point P to the discharge hole 35 formed in the base plate 33 by the cylinder 68. Electrode polishing system for resistance welding. The method of claim 1; The polishing machine (80) comprises: a polishing tool (85) moving to a polishing point (P) by a horizontal cylinder (81) above the side of the cartridge (42); And a vertical cylinder (86) fixed to the bottom of the base plate (33) to lower the polishing tool (85) to polish the electrode (34).