JPS58224089A - Assembling and welding device of bottomed cylindrical body and support member - Google Patents

Abstract

PURPOSE:To improve productivity and quality, by supplying support members to a bottomed cylindrical body inserted to each work head on the turntable of an assembling and welding device, welding the same with laser light and removing the welded assembly. CONSTITUTION:An intermittent driving mechanism is provided at the center of a base plate 5, and a turntable 7 is driven. Work heads 9 are mounted freely rotatably on the table 7, and are applied with a prescribed rotation. A mechanism 10 for supplying bottomed cylindrical bodies and a mechanism 11 for inserting said cylindrical bodies supply the assembly of a base metal 1, an outside cylinder 2 and a cathode sleeve 3 to each head 9. A mechanisms 12 for supplying support members cut the long-sized members from 3 sets of holders 13 for strap spools to a prescribed length and supply the same to the heads 9. The laser light conducted from a laser light oscillator 6 irradiates the outside circumference of the bottomed cylindrical body thereby welding the metal 1, the cylinder 2 and the sleeve 3 to one body. A mechanism 14 for removing the formed bottomed cylindrical bodies removes the finished products from the heads 9.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an assembly and welding device for a bottomed cylindrical body and a supporting member. After holding a supporting member such as a strap at the desired position of the open end of the bottomed cylindrical body, the process of welding the cathode sleeve and the base plate, and the cathode sleeve and the strap using a laser beam is automatically performed from supplying parts to taking them out. The present invention relates to an assembly and welding device for assembling and welding a bottomed cylinder and a supporting member.

[Technical background of the invention and its problems]

The cathodes used in cathode ray tubes built into television receivers must be heated rapidly so that when the receiver is turned off, an image is projected onto the phosphor surface as quickly as possible. Various cathode structures have been developed to achieve this goal.

One type of cathode is a blackened cathode in which a base metal is fitted into one end of an outer cylinder, and an NI-Cr alloy is treated in a wet high-temperature hydrogen furnace to form a blackened film made of Cr oxide on one surface. The sleeve is fixed, one end of a strap is welded to the other end of this blackened cathode sleeve, the other end of this strap is fixed to the shoulder of the cathode support tube, and a heater is inserted into the cathode sleeve. is superior in terms of speed and reliability.

However, in such a cathode, since the cathode sleeve is blackened, it is impossible to assemble the cathode sleeve and the strap by resistance welding before blackening. In addition, resistance welding has problems such as a limited speed in the welding electrode moving mechanism, low productivity, and large variations in the position of the welded parts due to wear of the welding electrode.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and uses a laser beam that does not cause any problem in welding even when there is a blackened film etc. -Welding of the base metal, outer cylinder and cathode sleeve, and welding of the cathode sleeve and strap, taking advantage of the high-speed response of laser light to overcome the conventional mechanical limitations. We have made it possible to perform welding on a single device, and we have also added a mechanism for supplying a bottomed cylindrical body consisting of a cathode sleeve, an outer cylinder, and a base metal, and a strap of a predetermined length from a long member. Assembly and welding of a bottomed cylindrical body and a supporting member, which includes a mechanism for cutting and supplying the supporting member, a mechanism for abutting the supporting member at a desired position on the bottomed cylindrical body, and a mechanism for taking out a finished product that has been welded in one assembly. The purpose is to provide equipment.

[Summary of the invention]

Specifically, the present invention includes a bottomed cylindrical body feeding mechanism for inserting a bottomed cylindrical body into a work head provided on a turntable, and a supporting member cut to a predetermined length at a predetermined position on the outer wall of the bottomed cylindrical body. A support member supply mechanism for supplying molding, a laser beam oscillation device and laser beam optics for welding together the bottom boundary of the bottomed cylindrical body and the open end edge outer wall of the bottomed cylindrical body and the support member by laser light. The present invention is characterized by comprising at least a system and a bottomed cylindrical body forming and taking-out mechanism for forming and taking out the support member after welding with laser light.

[Embodiments of the invention]

Next, an embodiment of the apparatus for assembling and welding a bottomed cylindrical body and a support member according to the present invention will be described with reference to the drawings.

First, FIGS. 1 and 2 show the bottomed cylindrical body and support member of the assembled and welded finished product (a) 111, and the cathode is shown as an example thereof.

That is, a base metal (1) as a bottom plate, an outer cylinder (2) as a cylindrical body, and a carnode sleeve (3) with a blackened surface.
and straps (4) as supporting members that are welded and fixed to the cathode sleeve at 120° intervals.

In FIG. 3, (5) is a base plate, and an intermittent drive mechanism (not shown) is installed approximately in the center of this base plate (5), and the turntable (7) is driven by this intermittent drive mechanism. A work head (9) is rotatably mounted on this turntable (7), and parallel two
A predetermined rotation is applied by the sheet cam (8).

In addition, the work head (
9), a cylinder with a bottom, that is, a combination of the base metal (1), the outer cylinder (2), and the cathode sleeve (3) shown in FIGS. 1 and 2 is sequentially supplied to the work head (9). The bottom cylindrical body supply mechanism (10) and the bottomed cylindrical body insertion mechanism (+1) each have three sets of strap spool holders (1:1), which cut a long member from 1 to a predetermined length and supply it to the work head (9). Supporting member supply mechanism 03. Bottomed cylindrical body forming and taking out mechanism I
is installed. Furthermore, base play) (5) 9111
A laser beam oscillation device (6) is placed on the surface, and the laser beam is guided to each welding body by a laser beam optical system to be described later.

Next, a work head rotation mechanism using two parallel cams (8) and al for rotating the work head (9) provided at the lower part of the turntable (7) will be explained with reference to FIG.

That is, a row 2 spider frame is attached to the lower part of the work head (9) of %8, and a roller group butterfly e is attached to this row 2 spider αn, and a parallel two-piece cam (8) and a cam in field a are attached. Along the curve, it rotates about 240 degrees in lom3, rotates 120 degrees when moving from Po55 to Po56, and Po56 to Po57, and remains stationary at other Pos.

Next, the laser beam optical system will be explained with reference to FIG.

That is, the laser beam emitted from the laser oscillation device (6) according to the control signal passes through the optical path indicated by the dotted line in the figure and reaches Po.
While the bottomed cylinder inserted into the work head (9) from opposite sides at 53 is rotating, several points on the outer circumference are irradiated, and the base body (I), the outer cylinder (2), and the cathode sleeve ( 3
) are welded together.

On the other hand, the laser beam branched in the other direction Po55°Po5
6. The strap (4) which is guided by Pos7K and pressed against the lower edge of the cathode sleeve (3) of the mausoleum cylinder on the work head (9) is irradiated and welded together. In this case, the strike 2 tube (4) is attached to three equal parts of the outer circumference of the cathode sleeve (3), that is, at positions separated by 120 degrees, so that the Po55
, Po56, and Po571c perform exactly the same operations. 0 barrel is shutter, α1 kan (22
)(23)(28) are half mirrors for laser beam branching,
(21) (30) are shutters for each optical path, (24) (
31) is a filter for adjusting the laser beam power circle, (25)
(29) is a total reflection mirror, (26), (32), and (36) are condensing lenses, and (27) is a light m for confirming the laser beam power.
Sensor, (33) and (35) are optical fiber connectors,
(34) respectively indicate optical fiber cables.

Next, the bottomed cylindrical body supply mechanism (10) will be explained with reference to FIG.

That is, a parts feeder (37
) and connect the chute (38) to this chute (38).
A feeder (39) is provided at the beginning [], and the bottomed cylindrical bodies are fed one by one to the position of the chuck (40), and the bottomed cylindrical bodies are pushed up from the lower part of the chuck (not shown) K. The chuck (40) attached to the reversing arm (41) grips the bottomed cylindrical body, inverts it, and brings it directly above the work head (9) of Po5l. In this state, the bottomed cylindrical body insertion mechanism (1υ) has several insertion bins (not shown) at the tip thereof, which are lowered and attached to the bottomed cylindrical body L work head (9).

Next, the support member supply mechanism 02 will be explained starting from the seventh ['NK.

That is, the support member supply mechanism 02 is placed on the base plate (5).
1 and a spool holder θ island are fixed, and a long strap serving as a support member is wound around a spool (42) rotatably attached to the spool holder 0 row. The tip of this strap (4) passes through the groove of the strap guide (45a) installed on the feed block (45), and the movable grip bar (44)
is held by. Further, its tip is held by a fixed gripper (46), but a movable gripper (44)
) and the fixed gripper (46) are driven by the lever (43) and feed out the strap (4) intermittently by repeating alternating opposing movements.

The strap (4) that is sent out intermittently in this way is 7
It passes through the groove of the strap guide (47a) installed on the ohming block (47) and protrudes from the tip of the strap guide (47a).
) is formed along the outer circumferential surface of the upper cutter (5
0)" is cut by the lower cutter (49). At this time, the strap chuck (52) provided at the tip of the arm (51) is located below the upper cutter (50),
Hold the cut strap (4) and then attach it to the arm (5).
1) is operated and the state shown in Fig. 7 is reached, and the cathode sleeve (3), which is a cylindrical body with a bottom, is attached to the work head (9).
) Press the strap (4) against the outer wall of the open end edge.

Next, as shown in Fig. 8, the strap chuck (52) holds the strap (4) on the outer wall of the open end edge of the cathode sleeve (3) of the bottomed cylindrical body attached to the work head (9)K. Explain the condition.

That is, the strap chuck (52) has a strap (4
) A suction hole (52s) is machined, and the bottom hole (52a) is connected to a vacuum source and holds the strap (4). The work head (9) also has suction holes (9).
a) is bored and holds the bottom surface of the base metal (1) by suction 1 Furthermore, a vacuum pressure switch is provided in each of the suction pipes, and the bottomed cylinder and the strap (4) It is now possible to detect the absence of a laser beam and stop the oscillation of the laser beam or stop the device. The strap chuck (52) is provided with a laser beam window (52b), and the laser beam passes through this window (szb) to weld the strap (4) and cant sleeve (3) together. It is now possible to do so.

Next, the bottomed cylindrical body molding and extraction mechanism (14)'□9 Figure 1
This will be explained using Figure 0.

A platen (53) is fixed on the base grate (5), a lever (54) that shapes the opening of the three straps (4), and a ball bush φ5 for vertical movement.
) (561 axis (57), holder (58), chute (
59) etc. are installed. As shown in Fig. 10, the tip of this bottomed cylindrical body forming and taking-out mechanism aa is connected to the work head (the bottomed cylindrical body and the strap (4), which have been attached and welded with 91K, are the bottomed cylindrical body forming and taking-out mechanism 04). When moving to the position, the washer (63) previously inserted into the work head (9) enters between the bearings (62) attached to the holder (58). At this position, the forming jig (6) is pushed down by the movement of the lever (54), the angle of the strap (4) is formed to a predetermined opening degree, and then the forming jig (60) is moved by the spring (61).
will be returned. Next, the holder (58) rises, and the washer (63) sandwiched by the bearing cylinder (K) rises along the work head (9), pushing up the cant sleeves 1 and (3) with the end face. At this time, air is blown through an air nozzle (not shown) into the finished product (- indicates shoe) (59) and removed.

Next, FIG. 11 is a schematic diagram of the control system of this embodiment.

That is, a synchronization signal from a timing cam (not shown) housed at the bottom of the base plate (5) and a nine operation command signal (64) set by the operation block (73) are sent to the control block (74). communicated. This control block (7
4), a drive and display signal (65) is sent to the operation block (73), and a laser trigger signal (66) is sent to the laser control block (75).
) is transmitted to the laser device power supply block (76) 9 and is further transmitted along the arrow (68) to the laser beam oscillator (6)K to oscillate the laser beam and to the control block. A monitor trigger signal (69) is transmitted to (74), and this monitor trigger signal (69) is sent to the laser power detection block (77) along the arrow (70).
) is transmitted to the laser power detection block (
77) Monitoring of laser light power is performed, and the laser light power can now be constantly monitored.

Also, from the operation block (73) to the shutter (21) (3
0) A hesha starter control signal (72) is transmitted to control laser light irradiation depending on the presence or absence of shear work.

This example is a typical one, and there is no outer cylinder (2).
The base metal (1) may be cap-shaped, and other shapes K may also be used, but in this case, of course, a part of the mechanism of the device will be changed.

[Brief explanation of drawings]

FIG. 1 is a top view showing a cathode as a completed product consisting of a bottomed cylindrical body and a support member formed according to an embodiment of the present invention, FIG. 2 is a cross section of FIG. 1, and FIGS. 3 to 11 FIG. 3 is a plan view of the main parts, FIG. 4 is an explanatory diagram showing the rotation mechanism of the work head, and FIG. Figure 5 is an explanatory perspective view showing the laser beam optical system, Figure 6 is an explanatory plan view showing the bottomed cylindrical body supply mechanism, Figure 7 is an explanatory side view showing the support member supply mechanism, and Figure 8 is an explanatory side view showing the support member supply mechanism. Fig. 7 is an explanatory cross-sectional view of the main part, Fig. 9 is a partially cutaway cross-sectional view for explanatory purposes showing the bottomed cylindrical body molding and extraction mechanism, Fig. 10 is a cross-sectional view of the main part of Fig. 9, and Fig. 11 is the control system. This is a bootleg diagram. a also finished product 1...Base metal 2...Outer cylinder 3...Cathode sleeve 4...Stroke 2
Tsubu 5...Pace plate 6...Laser beam oscillation device 7...Turntable 8...Parallel two-piece mantle
9... Work head lO... Bottomed cylindrical body feeder $1
11--Bottomed cylindrical body insertion mechanism 12...Supporting member supply mechanism 14...Bottomed cylindrical body forming and removal mechanism Representative Patent attorney Mr. Inoue Figure 4, Figure 6, Figure 7, Figure 8, Figure 9 Figure 11

Claims (1)

[Claims] a bottomed cylindrical body feeding mechanism that inserts the bottomed cylindrical body into a work head provided on a turntable; and a support that molds and supplies a support member cut to a predetermined length to a predetermined position on the outer wall of the bottomed cylindrical body. a member supply mechanism, a laser beam oscillator and a laser beam optical system for welding together the vicinity of the bottom of the bottomed cylindrical body and the open end edge outer wall of the bottomed cylindrical body and the support member using a laser beam; An apparatus for assembling and welding a bottomed cylindrical body and a support member, characterized in that it comprises at least a bottomed cylindrical body forming and taking out mechanism for shaping and taking out the support part after welding with the laser beam.