JPH0231273Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is designed to press the circular welding electrode plate of a seam welding machine, constantly cut and modify the seam electrode surface on the circumference, and This invention relates to a seam welding electrode plate cutting device that scrapes off impurities such as plating layers of objects to be welded that adhere to the surface, and is an improved version of the cutting device conventionally used for the same purpose.

(Prior art) The circumferential surface of the welding electrode plate of a seam welding machine is cleaned by cutting while scraping off impurities such as a plating layer of the welded material that adheres to the electrode plate during seam welding work. A cutting device for cutting and repairing the circumferential surface of the electrode plate in preparation for seam welding is known. However, conventionally, as shown in Fig. 4, a ruler roll b is pressed against the circumferential surface of an electrode plate a, and a Hale bite type tool e is used, in which a tip d is baked.
The shank f is attached to an E-shaped holder h using position adjustment screws c and g, respectively, and the holder is connected to the rod of the cylinder. As the radius length decreases and the circumferential surface length changes with cutting, if adjustment is not made to accommodate the decrease in radius, the amount of bite of the chip d into the circumferential surface of the electrode plate a will increase, causing the position adjustment screw g to The adjustment frequency is often every 3 to 4 hours, and when replacing the cutting tool e, it has disadvantages such as not being able to make it the same as before replacement.

(Problems to be solved by the invention) The problem is to improve the shortcomings of the conventional device mentioned in the previous section, and to make adjustment almost unnecessary by using only the tip and tip support rod. This is what we have set as an issue.

(Means for solving the problem) The purpose of the present invention is to solve the problem mentioned in the previous section. A cut groove is formed starting at every other edge angle on the circumference and terminating at an adjacent edge angle, and the mounting hole is inserted into the mounting hole of the chip support rod, which has a positioning portion for joining the required sides of the chip. The chip is removably fixed through a retaining rod passed through the chip, and the starting end or the ending end of one of the cutting grooves of the chip protrudes from the positioning part so as to correspond to the circumferential surface of the seam welding plate.

A preferred embodiment of the invention will now be described.

(Embodiment) Figures 1 to 3 of the accompanying drawings show an embodiment of the present invention, in which Figure 1 is a front view, Figure 2 is a perspective view of the chip,
FIG. 3 is a perspective view of the tip support rod.

In the figure, 1 indicates the upper disc-shaped seam welding electrode plate. The electrode plate is attached to the rotating shaft 3, and since the circumferential surface 2 is shaved by corrective cutting and the radius is gradually reduced, the speed of the shaft 3 is automatically adjusted so that the circumferential surface speed is always approximately the same. 5 is a lower seam welding electrode plate, and 6 and 7 are objects to be welded that are supplied between the seam welding plates 1 and 5. The cutting device of the present invention is only provided on the upper and lower welding electrode plates 1 and 5, respectively, but in this embodiment, only the upper seam welding electrode plate 1 will be described.

Reference numeral 11 denotes a chip according to the present invention, which forms a regular polygon with an even interior angle θ in the plane a, as shown in FIGS. 1 and 2, and is shown as a regular quadrilateral in the drawings. This chip 11 has a thick circumferential surface b with a ridge angle 12 perpendicular to the plane at the inner corner, and a mounting hole 13 is formed through the center of the plane a. Cutting grooves 14 are formed on the circumferential surface of the chip, starting at every other ridge angle 12 and terminating at adjacent ridge angles. This cutting groove 14 is matched to the circumferential shape of the welding electrode plate 1 (or 5). Reference numeral 16 denotes a tip support rod, which consists of a tip mounting head 17 and a shank 18. The chip mounting head 17 has a positioning mechanism formed by linear edges 19 _-1 , 19 _-2 , 19 _-3 , and 19 _-4 that fit tightly on each side when the chip 11 is a square plane. It consists of a portion 19 and a supporting protrusion 20, and the supporting protrusion 20 is provided with a mounting hole 21 surrounded by each of the above-mentioned straight edges. The bearing hole 21 is formed as a screw hole or a through hole, and the present embodiment shows one in which a screw hole is formed.

The chip 11 is fitted into the positioning part 19 so that each side is in close contact with the straight edges 19 _-1 to _{19 -4} , and the supporting protrusion 20
After stabilizing it above, screw 22 is passed through the mounting hole 13.
The cutting groove 14 is screwed into the mounting hole 21 and fixed, and the starting end or the ending end of the cutting groove 14 protrudes from the positioning part in correspondence with the circumferential surface of the seam welding plate 1.

In the present invention, the tip 11 is left facing up or turned over to make the starting end or the ending end of the cutting groove 14 protrude, and in order to make the protruding angle of each of them the same, when the structure of the embodiment is used, Two cutting grooves 1
The ridge angles 12, 12 where each starting end or end end of the electrode plate 4 is provided, the center of the mounting hole 13, and the center of the shaft 3 of the seam welding electrode plate 1 are aligned.

The shank 18 of the chip support rod 16 is inserted into the insertion groove 32.
The protrusion 34 protruding from the mounting piece 31 is connected to the piston rod of the cylinder.

(Operation of the present invention) The present invention has the configuration as clarified by the above explanation, and has a mounting hole 13 in the center, with starting ends at every other ridge angle of the circumferential surface b and terminating ends at adjacent ridges. Positioning portion 18 of the cutting groove 14 for the tip mounting rod 17
The starting end or ending end protruding from the seam welding electrode contacts the circumferential surface of the seam welding electrode plate, and the depth of cut is adjusted using pressure from a cylinder, etc., and cutting is performed by the corner of the starting end or end end of the cutting groove 14. Even if the diameter of the plate changes, almost no adjustment is required to accommodate the change.

(Effects of the present invention) The present invention has the above-described structure and function, and does not require the use of a ruler roll to prevent excessive depth of cut as in the past, and the diameter of the seam welding electrode plate is changed by cutting. However, there is almost no need for corresponding adjustment, and the angle of the tip can be changed or turned over easily on the mounting rod, and by changing the angle or turning it over, it is possible to adjust the starting or ending angle of the cutting groove with a single tip. Because it can be used repeatedly,
Compared to the conventional hailbite type, the service life of the tip can be extended, and there is no risk of excessive cutting and deformation of the seam welding electrode plate.

[Brief explanation of the drawing]

Figures 1 to 3 of the accompanying drawings show an embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a perspective view of the chip, and Figure 2 being a perspective view of the chip.
FIG. 3 is a perspective view of the tip support rod. FIG. 4 is a front view of the conventional device. 11... Chip, 12... Edge angle, 13... Mounting hole, 14... Cutting groove, 16... Chip support rod, 1
7... Chip mounting head, 18... Shank, 19
...Positioning part, 20...Bearing protrusion, 21...Mounting hole.

Claims (1)

[Scope of utility model registration request] A mounting hole is provided in the center of a regular polygon solid chip with an even number of interior angles, and cutting grooves are formed that start at every other edge angle on the circumference of the chip and end at adjacent edge angles, and A stop rod passed through the mounting hole is inserted into the mounting hole of a chip support rod that has a positioning part that connects the sides of the chip, and the chip is removably fixed. A seam welding electrode plate cutting device characterized by a protrusion corresponding to the circumferential surface of the plate.