JPH07230761A - Spring holder welding machine - Google Patents

Abstract

PURPOSE:To convey a spring holder, so that its welding can be performed, by accurately positioning the spring holder conveyed surely to its welding position without flawing the spring holder, and further setting its direction (tilt) so as to obtain the prescribed direction (tilt) perticularly in the spring holder which must be welded to an A member. CONSTITUTION:A spring holder 5a for an A member 2 is clamped to be conveyed to a positioning point 8 by the first conveying means 8, and this A member use spring holder 5a is clamped in its non-welded part by a clamp device 11 of the second conveying means 10. Thus by determining a position and tilt of this spring holder 5a, while locking its condition, thus A member use spring holder 5a is conveyed by the second conveying means 11 to a welding position, to perform welding to the A member 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring holder welding machine for welding a spring holder as a seat plate for attaching a spring to a member (constituent member) of a frame which supports an aperture grill while giving necessary tension thereto. .

[0002]

2. Description of the Related Art In a Trinitron (trademark) type cathode ray tube, an aperture grill is used as a color selecting means. This aperture grill is formed by etching a metal plate and forming a large number of striped slit holes in the vertical direction, and is connected to the frame 1 as shown in FIG. 3, for example. Frame 1 is A member 2, 2 and B member 3,
3, the A members 2 and 2 are metal rods having an L-shaped cross section with a curved surface whose front surface matches the cylindrical face, and the aperture grill 4 is welded to the A members 2 and 2. . B members 3 and 3 are metal members that provide A members 2 and 2.

By the way, the frame 1 to which the aperture grill 4 is connected is assembled to the cathode ray tube panel via a spring attached to the frame 1, but the spring is not directly attached to the frame 1 with high accuracy, but is directly attached to the spring holder 5a. 5b and 5b are welded using the seat plate. Therefore, the step of welding the spring holders 5a, 5b, 5b to the frame 1 is indispensable.
The spring holder 5 attached to the A member 2
The shape and size of a and the spring holders 5b and 5b attached to the B members 3 and 3 are different.

Conventionally, in the welding of spring holders, the processed spring holders are arranged side by side, and the end surface of the spring holders among the arranged spring holders is applied with a pressure to drop the spring holders. It was used for welding to A member or B member by the method.

[0005]

By the way, in the prior art, since the spring holder is supplied by applying pressure to the spring holder from the end face and dropping the spring holder, the pressure is applied due to the thinness of the spring holder. There was a problem in that it could not be applied well and a supply error occurred, and the spring holder was rubbed and scratched.
Further, the spring holder 5a, which is attached to the A member 2 among the spring holders, is not only a precise welding device when welding, but also the spring holder 5a.
The orientation (tilt) must be as set in advance (otherwise it will cause color misregistration), but it was difficult to do so.

The present invention has been made in order to solve such a problem, and the spring holder should be positioned accurately to the welding position without damaging the spring holder, and especially the spring to be welded to the A member. It is an object of the present invention to further convey the holder so that its orientation (inclination) becomes a predetermined orientation (inclination) so that welding can be performed.

[0007]

According to a first aspect of the present invention, there is provided a spring holder welding machine which clamps an A member spring holder by a first conveying means and conveys it to a positioning point, and the A member spring holder is not welded. The position and the inclination of the spring holder are determined by clamping the portion with the clamp device of the second conveying means, and the second conveying means conveys the A member spring holder to the welding position while locking the state. Then
It is characterized in that welding to the A member is performed.

A spring holder welding machine according to a second aspect of the present invention is the spring holder welding machine according to the first aspect, wherein the clamp device presses the vicinity of the end portion of the spring holder on the side opposite to the welded portion from both sides, and the spring holder has an intermediate portion. It is characterized in that it comprises a clamper that can be pressed from both sides, and the inclination of the spring holder is defined by the positional relationship between the clamp positions of these two clampers. Claim 3
In the spring holder welding machine, the B member spring holder is clamped by the first conveying means and conveyed to the positioning point, and the A member spring holder conveyed to the positioning point is transferred to the second portion at the non-welded portion. The spring holder is positioned by clamping it with the clamp device of the conveying means, and the second member conveys the spring holder for the B member to the welding position for welding to the B member. Is characterized by.

[0009]

According to the spring holder welding machine of claim 1,
Since the spring holder is transported not by cutting but by clamping, the spring holder can be reliably transported even if the spring holder is thin, and there is no risk of scratches. Further, not only the A member spring holder is simply positioned by the clamp device in the second conveying means, but also the direction (tilt) of the A member spring holder is regulated, and the second member is locked while locking the state.
Since it is carried to the welding position by the carrying means, the A member spring holder can be accurately positioned and welded to the A member in a preset direction.

According to the spring holder welding machine of the second aspect, the spring holder is clamped at two points in the vicinity of the end portion of the spring holder on the side opposite to the welded portion and at the intermediate portion of the spring holder. The longitudinal direction (tilt) of the spring holder can be accurately defined by the positional relationship of the positions. According to the spring holder welding machine of claim 3, the spring holder is conveyed not by cutting but by clamping, so that even if the spring holder is thin, it can be surely conveyed, and there is a risk that it will be scratched and scratched. Nor. Further, since the B member spring holder is positioned by the clamp device in the second conveying means and is conveyed to the welding position by the second conveying means, the B member spring holder is accurately aligned with the B member in a preset direction. It can be positioned and welded.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The spring holder welding machine of the present invention will be described in detail below with reference to the illustrated embodiments. 1 (A) and 1 (B) are for explaining a spring holder transfer / positioning mechanism for an A member of a spring holder welder, and FIG. 1 (A) is a schematic plan view of the spring holder transfer / positioning mechanism,
(B) is a cross-sectional view of a clamp device and a welded portion. still,
Trinitron-type color cathode ray tubes are available with 4 or 3 support points for supporting the aperture grille on the cathode ray tube panel with a frame.
Regarding the member spring holder 5a, it suffices to weld only to one of the A members 2 and 2.
It is necessary to weld the spring holders 5a and 5a to both the members 2 and 2. When the spring holders 5a and 5a are welded to both the A members 2 and 2, both of them are welded at the same time by the same method, so only one side of the welding will be described.

6 is a spring holder 5a for A member,
In the parts feeder for supplying 5a, the A member spring holders 5a, 5a, ... The A member spring holder 5a supplied by the linear feeder 7 is conveyed to the positioning point 9 as shown by the arrow a while being clamped by the manipulator 8 as the first conveying means. The A member spring holder 5a transported to the positioning point 9 is positioned by being clamped by the clamp device 11 of the manipulator 10 which is the second transport means, and its orientation θ [see lower left portion of FIG. 1 (B)] is set. It is in a prescribed state as prescribed and is locked after the end of the clamp. Then, in the locked state, the manipulator 10 conveys the A member spring holder 5a to the welding position and welds it.

Here, the clamp device 11 and the welded portion will be described in detail. Reference numerals 12a and 12b are members forming a clamper by forming a pair and clamping both sides of the vicinity of the end portion of the spring holder 5a on the non-welding side. Also,
Reference numerals 13a and 13b are members that form a pair of other clampers by pairing with each other, and clamp the bent portion of the middle portion of the spring holder 5a from both sides. The clamp members 12a and 13a move integrally, but the positional relationship between the clamp members 12a and 13a is adjustable. Clamp member 12
The same applies to b and 13b. Then, the positions of the clamp members 12a, 12b, 13a, 13b are adjusted so that the inclination θ in the longitudinal direction of the A member spring holder 5a becomes a predetermined value when clamped.

Then, the clamp device 11 moves the positioning point 9
Immediately after the positioning is performed, a lock [lock for preventing displacement in the left-right direction in FIG. 1 (B)] is applied, and in that state, it is transported to the welding location and welded. The welded state is the state shown in FIG. 14 is a back electrode, and 15 is a front electrode, and spot welding is performed by supplying an electric current through this electrode. It should be noted that although one spring holder 5a is welded at two locations, in the past, welding was performed simultaneously at two locations using a geta-shaped electrode, but recently, the spring holder itself has become smaller and there is a gap between the weld locations. It is difficult to weld two parts at the same time because the space between the two is small. Therefore, at present, welding is performed one by one. Specifically, when the welding at one location is completed, the front electrode is once retracted, and the portion supporting the front electrode is rotated by a predetermined angle to advance the front electrode. Then, the portion of the front electrode that is in contact with the A member spring holder 5a shifts, and if pressure is applied and current is supplied in that state, welding is performed at the other welding portion.

FIG. 2 is a schematic plan view of the B member spring holder transport positioning mechanism for the spring holder welding machine. In FIG. 2, 6 is a parts feeder for supplying the B member spring holders 5b, 5b, and the B member spring holders 5b, 5b, ...
Are fed in line by one by the straight feeder 7.
The B member spring holder 5b supplied by the linear feeder 7 is conveyed to the positioning point 9 as shown by the arrow a while being clamped by the manipulator 8 as the first conveying means. The B member spring holder 5b conveyed to the positioning point 9 is the clamp device 1 of the manipulator 10 as the second conveying means.
It is positioned by being clamped by 1, is transported to the welding position by the manipulator 10, and is welded.

Unlike the case of the A member spring holder 5a, the B member spring holder 5b does not need to accurately define the longitudinal direction θ thereof. Therefore, it is not necessary to use a clamp device that clamps with two clampers, and a clamp device that can be simply positioned and clamped may be used. Further, as described above, there are three types of trinitron-type color cathode ray tubes that support the aperture grille on the cathode ray tube panel in the frame by 4 points and 3 points. Even if it is a point, the B member spring holder 5b must be welded to each of the B members 3 and 3 one by one, but the B member spring holders 5b for the B members 3 and 3,
The welding of 5b is performed in parallel at the same time. Also, the point that welding is performed at two locations on one B member spring holder 5b is the same as in the case of the A member spring holder 5a, and the welding method is also the same.

[0017]

According to the spring holder welding machine of claim 1,
The A member spring holder is clamped by the first conveying means and conveyed to the positioning point, and the A member spring holder conveyed to the positioning point is not welded to the clamping device of the second conveying means. The position and the inclination of the spring holder are determined by clamping the spring holder, and the state is locked, and the spring holder for the A member is conveyed to the welding position by the second conveying means to perform the welding to the A member. It is characterized by that. Therefore, according to the spring holder welding machine of claim 1, since the spring holder is clamped and conveyed instead of being cut out, even if the spring holder is thin, it can be conveyed reliably and there is a risk of scratches. Absent. In addition to simply positioning the A member spring holder by the clamp device in the second conveying means, the direction (tilt) of the A member spring holder is regulated and the second conveying means is locked while the state is locked. The A member spring holder can be accurately positioned on the A member in a preset direction, and welding can be performed.

In the spring holder welding machine according to a second aspect of the present invention, the clamp device includes a clamper that presses the vicinity of the end of the spring holder on the side opposite to the welded portion from both sides, and a spring holder that presses the intermediate portion from both sides. It is characterized in that the inclination of the spring holder is defined by the positional relationship between the clamp positions of the two clampers. Therefore, according to the spring holder welding machine of claim 2, the spring holder is clamped at two points in the vicinity of the end portion of the spring holder on the side opposite to the welded portion and in the intermediate portion of the spring holder. The longitudinal direction (inclination) of the spring holder can be accurately defined by the positional relationship of.

The spring holder welding machine according to claim 3 is B
The member spring holder is clamped by the first conveying means to be conveyed to the positioning point, and the A member spring holder is clamped by the clamping device of the second conveying means at the portion which is not welded to the member holder. The B member spring holder is positioned and conveyed to the welding position by the second conveying means to perform welding to the B member. Therefore, according to the spring holder welding machine of the third aspect, the spring holder is conveyed not by being cut out but by being clamped, so that even if the spring holder is thin, it can be surely conveyed, and there is a risk of scratches. Absent. Further, since the B member spring holder is positioned by the clamp device in the second conveying means and is conveyed to the welding position by the second conveying means, the B member spring holder is accurately aligned with the B member in a preset direction. It can be positioned and welded.

[Brief description of drawings]

1A and 1B are views for explaining a spring holder transport positioning mechanism for an A member, and FIG. 1A is a schematic plan view of a spring holder transport positioning mechanism.
(B) is a cross-sectional view of the clamp device and the welding portion of the spring holder transport positioning mechanism.

FIG. 2 is a schematic plan view of a B member spring holder transport positioning mechanism.

FIG. 3 is a perspective view of a frame and a spring holder for explaining the technical background of the invention.

[Explanation of symbols]

 1 frame 2 A member 3 B member 5a A member spring holder 5b B member spring holder 8 First transfer means 9 Positioning point (positioning point) 10 Second transfer means 11 Clamping device 12a, 12b Clamper 13a, 13b Clamper

Claims (3)

[Claims] 1. A first transport means for clamping and transporting an A member spring holder sequentially transported from a parts feeder to a positioning point, and welding the A member spring holder transported to the positioning point. A spring holder transfer positioning mechanism comprising: a second transfer means for determining the position and inclination of the spring holder by clamping with a clamp device at a portion not to be locked, and transferring the position to the welding position while locking the state. Spring holder welding machine characterized by 2. The clamp device comprises a clamper that presses the vicinity of the end of the spring holder on the side opposite to the welded portion from both sides, and a clamper that presses the intermediate portion of the spring holder from both sides, and the position of the clamp position of the two clampers. The spring holder welding machine according to claim 1, wherein the inclination of the spring holder is regulated by the relationship. 3. A first conveying means for clamping the B member spring holder sequentially conveyed from the parts feeder and conveying it to a positioning point, and welding the B member spring holder conveyed to the positioning point. The spring holder welding machine is characterized in that it has a spring holder transport positioning mechanism, which comprises a second transport means for positioning the spring holder and transporting it to the welding position by clamping with a clamp device at a portion that is not blocked.