JPH02106851A - Manufacturing device for cathode-ray tube - Google Patents

Abstract

PURPOSE:To smooth the automatic installation of a tip tube to an exhaust cart by conducting a position correction of an electric sealing jig after measuring the center axis of the tip tube top end of a cathode-ray tube, then installing the electric sealing jig to the tip tube, and installing the exhaust pump head part to the tip tube in the state where the positioning to the cathode ray tube is released. CONSTITUTION:The center of the tip tube top end of a cathode ray tube is measured by the measuring elements 18A, 18B of an electric sealing jig positioning mechanism 17, and the disposition of the center of the tip tube top end from the tube axis is detected. Based on this measurement value, a XY table 20 is moved to correct the position of an electric sealing chuck part 19, which catches the electric sealing jig 5 thereby positioning the electric sealing jig 5. Namely, the falling error of the tip tube 2 to the tube axis is corrected by this procedure. Then, the electric sealing jig 5 is raised together with the electric sealing chuck part 19 and inserted into the tip tube 2, the electric sealing chuck part 19 is released before its complete insertion, and the insertion of the electric sealing jig 6 into the tip tube 2 is completed by a support plate. Hence, the automatic installation of the tip tube to an exhaust cart is made possible.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cathode ray tube manufacturing apparatus, particularly a cathode ray tube exhaust system,
The present invention relates to an automatic mounting device for mounting a cathode ray tube chip tube onto an exhaust cart in a sealing process.

[Summary of the invention]

The present invention is an automatic mounting device for mounting a chip tube of a cathode ray tube on an exhaust cart during the evacuation and sealing process of the cathode ray tube, and the device body is attached to the exhaust cart on which the cathode ray tube is placed using a tracing mechanism. After positioning the cathode ray tube with respect to the main body of the device, measure the center axis of the tip of the tip tube of the cathode ray tube, correct the position of the sealing jig, and then move the sealing jig to the tip tube. The exhaust pump head is attached to the chip tube with the positioning relative to the cathode ray tube released, so that the tip tube can be automatically attached to the exhaust cart. be.

[Conventional technology]

In the manufacturing process of cathode ray tubes, there is a step of sealing an electron gun inside the cathode ray tube, evacuating the tube through a chip tube, and sealing the tube (so-called electrical sealing). In this case, the cathode ray tube with the electron gun sealed therein is brought onto the exhaust cart, and its chip tube is fitted into the electrical sealing jig and into the end portion of the exhaust pump.

It is then evacuated and then sent into a furnace where it is electrosealed.

[Problems to be Solved by the Invention] In the past, due to errors in tilting the tip tube with respect to the tube axis of the cathode ray tube, variations in stopping accuracy of the exhaust cart, etc., the exhaust cart of the chip tube, that is, its electrical sealing jig, and the exhaust It was difficult to automate the attachment to the pump head.

In view of the above-mentioned points, the present invention provides a cathode ray tube manufacturing apparatus that enables automatic attachment of a chip tube to an exhaust cart.

(Means for Solving the Problems) The present invention consists of an apparatus main body (3) and an exhaust cart (4) on which the cathode ray tube (1) is placed and transported, and the exhaust cart (4) has an electric Seal jig (5) and exhaust pump head (6
), the device body (3) includes a copying mechanism (35) for positioning the device body (3) with respect to the exhaust cart (4);
A positioning means (9) Qω for positioning the cathode ray tube (]) with respect to the device body (3), and a chip tube (2) of the cathode ray tube.
Measure the tip of the tip tube (2) and place an electric sealing jig (
5) an electrical sealing jig positioning mechanism (17) for positioning the
Means (56) for attaching the electrical sealing jig (5) to the tip tube (2)
), and means (57) for attaching the exhaust pump head (6) to the chip tube (2) in a state where the positioning of the cathode ray tube (1) is released.

The copying mechanism (35) includes a head dick part (38) that is integrated with the main body (3) of the device, and a head chuck part (38) that when the exhaust pump head part (6) is gripped. The so-called floating table (36
). The head chuck part (6) is arranged so that its center lies on the central axis of the apparatus main body (3).

The positioning means consists of a neck chuck part (9) for gripping the neck of the cathode ray tube (1) and a butting means θ0) for positioning the panel.

The electrosealing jig positioning mechanism 07) includes measuring elements (18A) (18B) for measuring the center of the tip of the tip tube (2), an electrosealing jig middle hook part 09) that grips the electrosealing jig (5), Element (1
8A) (18B) and an XY child table 21 for adjusting the position of the electrically sealed chuck part 09) according to the measured value from (18B). The electrical sealing chuck part 09) is provided with a floating mechanism (31) that allows the electrical sealing jig (5) to move within the XY plane while gripping the electrical sealing jig (5).

[Effect]

The exhaust cart (4) on which the cathode ray tube (1) is placed in the cone holder (7) is moved to a position corresponding to the apparatus main body (3) and stopped. The copying mechanism (35) of the device body (3) operates, that is, the head chuck part (38) moves toward the exhaust cart (
4), the floating table (36) moves to the exhaust pump following the position of the do part (6), and connects the central axis of the device body (3) with the exhaust cart (4). The position of the main body (3) of the device (3) is adjusted so that the center axes of the two coincide with each other.

Next, the neck chuck part (9), which is a positioning means, and the panel abutting means 00) are operated against the cathode ray tube (1) on the cone holder part (7), and the tube axis of the cathode ray tube (1) is actuated. and the central axis of the device body (3) match. Therefore, the tube axis of the cathode ray tube and the center axis of the exhaust cart are aligned in a straight line.

Next, the electrical sealing jig positioning mechanism (+71 measuring element (18
A) (18B) measures the center of the tip of the cathode ray tube tip. This measurement detects the positional deviation of the center of the tip of the tip tube from the tube axis. Based on this measurement
The child table O moves to correct the position of the electrosealing chuck part 09), and the electrosealing chuck part 09) grips the electrosealing jig (5), thereby positioning the electrosealing jig (5). It will be done. That is, this operation corrects the tilting error of the tip tube (2) with respect to the tube axis.

Next, the electro-sealing jig (5) together with the electro-sealing chuck part 09) is
It is lifted up and inserted into the tip tube (2). At this time, assembly errors of the sealing jig (5) are absorbed by the floating mechanism (31) of the sealing chamber 09). Before it is completely inserted, release the electrically sealed chuck part and remove the means (56).
The fitting of the electrical sealing jig (5) to the tip tube (2) is completed by the support plate (44) which has been raised synchronously.

Next, positioning means for the cathode ray tube (9) 00)
is released and the cathode ray tube is made freely movable on the cone holder (7), and then the exhaust pump head (6) is raised via the means (57), and the exhaust pump head (6) is raised. into the tip tube (2). By releasing the position relative to the cathode ray tube, damage to the tip tube when the exhaust pump head section is raised is prevented.

Thereafter, the head chuck part (38) is released, and the exhaust cart (4) is sent to the furnace together with the cathode ray tube (1) to be evacuated, and the chip tube is electrically sealed.

〔Example〕

Hereinafter, embodiments of the manufacturing apparatus according to the present invention will be described in detail with reference to the drawings.

In Figure 1, (1) is a cathode ray tube with a chip tube (2), (3) is the main body of the device, (4) is a sealing jig (5), a diffusion pump for exhaust, and a diffusion pump head ( 6), etc., and shows an exhaust cart on which the cathode ray tube (1) is placed and transported.

The device body (3) includes a device body (3) of the cathode ray tube (1).
A neck chuck part (9) for gripping the neck part (1n) and a butting means 00 for positioning the panel part (1p) are provided. The neck chuck part (9) has a shaft (11a01) as shown in FIG.
It has a pair of chuck half-rests (12a) (12b) that can rotate around the cylinder (60).
and a gear mechanism (61) to open and close the neck (1n). Abutting means 00)
As shown in FIG. 2, the reference abutting portion (13a) (13
b) (13c) and the panel part (1p) in contact with the third and fourth sides of the reference abutment part (13a) (13b)
(13c) side is pressed against the abutting part (14
a) (14b) and (14c), and has the same configuration as the positioning means of a cathode ray tube when an electron gun is enclosed. In FIG. 1, this abutting means θ0) is arranged to be movable up and down along a guide rail θ0 by driving a cylinder θ0.

Further, the apparatus main body (3) is provided with a sealing jig positioning mechanism 07 for positioning the sealing jig (5) of the exhaust cart (4) at the tip of the tip tube (2). This mechanism 0η has two linear gauges θB) [(18A) and (18B) that measure the center position of the tip of the tip tube as shown in Fig.
] and an electrical sealing chuck part 09) that grips the electrical sealing jig (5) from both sides, and this electrical sealing chuck part 09) is mounted on an XY table QΦ movable in the X direction and the Y direction.

The two linear gauges (18A) and (18B) are arranged so as to be orthogonal to each other in the xy plane, and the whole is a chip tube (
2) are arranged so as to move forward and backward. The electrically sealed chuck part 09) has a flat contact surface (21) on one side,
It consists of a pair of chuck half-holes (23A) and (23B), the other of which has a 7-shaped groove contact surface (22), and both chuck half-holes (23A) and (23B) are connected to the rack (24) and pinion (25). It is opened and closed by the mechanism driven by the cylinder (26). In this case, the contact surface (22) of the 7-shaped groove positions the electrical sealing jig (5) in the X and Y directions, and the flat contact surface (21) positions the electrical sealing jig (5).
) to prevent rotation. Linear gauge (18A) (18
In B), the positional deviation between the center of the tip of the tip tube and the tube axis is measured. This measured value is programmed into the xY child table 2 (Il, and if a positional deviation occurs, the XY child table 1 moves according to the measured value and connects the electrosealing jig (5) to the electrosealing chuck part 09). It is aligned with the tip of the tip tube.

In the electrically sealed chuck part 09), as shown in FIGS. 6 to 8, a metal plate (for example, an iron plate) is placed between the chuck half-openings (23A) and (23B) and the respective support plates (27A) and (27B). (28) and elastic rubber (29) are alternately laminated and configured to be elastically movable in parallel between the laminated layers.
A CC (Remote Center Compliance) device (30) is interposed, and the support (27A) and (
The pressing member (32) integrated with the chuck (27B)
3A) and (23B) with a required distance d between them. That is, in this electro-sealing chuck part 09), when the electro-sealing jig (5) is gripped, its chuck halves (23A) and (23B) contact the electro-sealing jig (5), and the supports (27A) and (27B) ) moves its pressing member (32) until it hits the back of the chuck, and then presses the electrical sealing jig (5).
) is clamped. Further, from this state, even when the supports (278) (27B) are slightly returned so that the pressing member (32) is separated from the half-closed back of the chuck, the R
Due to the elastic force of the CC device (30), the chuck is partially closed (2
3A) The clamping state of (23B) with respect to the electrical sealing jig (5) is maintained, and in this state, the electrical sealing jig (5) is allowed to move within the XY plane. That is, this RCC device (30) constitutes a floating mechanism (31).

In addition, the electrically sealed chuck part 09) is connected to the XY table C! It is configured to be able to move up and down along with 0. Further, the apparatus main body (3) is provided with a copying mechanism (35) capable of moving the entire system in the XY plane.

This copying mechanism (35) moves the device body (3) in the X direction and in the Y direction.
a floating table (36) movable in the direction;
As shown in FIG. 5, it has a head chuck part (38) consisting of a pair of chuck halves (37A) and (37B) which grip the diffusion pump head part (6) of the exhaust cart (4). This head chuck part (38) is driven by the cylinder (39), so that both chucks are partially closed (37A) (
37B) is opened and closed. (56) is a hydraulic actuator, for example, that operates a lever (46) that raises and lowers the electrical sealing jig (5), which will be described later. (57) operates a lever (47) that raises and lowers the diffusion pump head (6). For example, the actuating parts are shown as cylinders, and the respective device bodies (3)
established in

On the other hand, as shown in FIGS. 9 and 10, the exhaust cart (4) is equipped with an electrical sealing jig (5) and a pump head (6) that communicates with a diffusion pump for exhaust, and a cathode ray tube on the top. The cone support for supporting the cone part (1) integrally has a part (7). The cone receiver portion (7) has a degree of freedom within the χY plane. As shown in Fig. 13, the electrical sealing jig (5) has a center hole (41) through which the tip tube (2) is inserted and a bottle insertion hole (43) through which the stem pin (42) is inserted. (44) Supported while being placed on top.

The support plate (44) is connected to the lever (
46), it is made movable in the vertical direction (see FIG. 12). Further, the pump head portion (6) is arranged to be movable in the vertical direction by a lever (47). FIG. 11 is a sectional view of the pump head part (6), and an adapter collar (49) having a tapered hole is disposed at the opening of the hole (48) into which the tip part (2) is inserted. The adapter force roller (49) is made vertically movable via a thrust hair ring (50). Adapter collar (49) and hole (4
8) An O-ring (51) is provided between the wall membrane parts, and a gear (not shown) is provided on the outer periphery in contact with the upper part of the collar (49).
An adapter cap (
53) is screwed into the threaded portion (54) of the head portion (6). Therefore, the head portion (6) and the tip tube (2) are hermetically sealed by tightening the cap (53) and crushing the O-ring (51) by driving the gear.

Next, the operation of this configuration will be explained.

As shown in FIG. 15, at position P of the exhaust cart (4), the cathode ray tube (1) is loaded into the exhaust cart (4) by a transfer machine. Next, the exhaust cart (4) on which the cathode ray tube (1) is mounted on the cone holder (7) arrives at a position P2 facing the apparatus main body (3) and is stopped. Here, the exhaust cart (
4) The stopping position will vary to some extent. First, the copying mechanism (35) of the apparatus main body (3), that is, the head chuck part (3
8) grips the diffusion pump head part (6) of the exhaust cart (4), and at the same time the floating table (36) operates to follow the position of the head part (6), and the device body (3
The apparatus main body (3) is moved and positioned so that the middle six axes (70) of ) coincide with the central axis (55) passing through the center of the diffusion pump head of the exhaust cart (4). As a result, variations in the stopping accuracy of the exhaust cart (4) are corrected, and the position between the apparatus main body (3) and the exhaust cart (4) is determined.

Next, attach the cathode ray tube (1) by the neck chuck part (9).
At the same time, the neck part (1n) of the cathode ray tube (1) is held, and the abutting means 00) is lowered to abut against the side surface of the panel part (1p) of the cathode ray tube (1) (13a) to (13c) and (14a).
) to (14c) come into contact, the neck part (1n) and panel part (1p) are positioned, and the cathode ray tube (14c) is positioned.
) is positioned.

That is, the tube axis of the cathode ray tube (1) and the central axis of the device body (1) match.

Next, the linear gauges (18A) and (18B) move forward to measure the tip position of the tip tube (2). That is, the deviation (tilting error) between the center of the tip of the tip tube and the tube axis of the cathode ray tube (1) is measured. Linear gauge (18A) (18B)
After retreating, χY table Q is created based on this measured value.
■ is programmed. Then, at the same time as the electric sealing jig (5) is clamped by the electric sealing chuck part 09), the χY table QO moves by the tilting error of the tip tube (2), so that the electric sealing jig (5) The tip is aligned and the position of the sealing jig is corrected (see FIG. 13).

At this point, in the electrically sealed chuck part 09), as shown in FIG. 14A, the pressing member (3) of the support (27A) (27B)
2) is in contact with the back of the chuck (23A) (23B) (7), and the Rcc device (30) is elastically displaced, and the electric sealing jig (5) is moved by both chucks (23A) and (23B). to hold.

Next, the support body (27A) is moved so that the pressing member (32) is separated from the backs of the chucks (23A) and (23B).
Loosen (27B) slightly. In this state, the chuck is partially rested (23A) due to the elastic force of the RCC device (3o).
and (23B) are held against the electrical sealing jig (5) while at the same time being able to move freely on the XY plane by the RCC device.

In this state, the electric sealing chuck part 09) holding the electric sealing jig (5) is raised (along with the XY child table) to insert the tip tube (2) into the electric sealing jig (5). (See Figure 13).

At this time, the floating mechanism by the RCC device (3o) allows the electrical sealing jig (5) to move in the XY plane, so it is possible to absorb assembly errors of the electrical sealing jig and insert the tip tube. can. In addition, in synchronization with the rise of the electrical sealing jig (5) by this electrical sealing chuck part (09), the actuating part (
lever (4) connected to support plate (44) by
6) is operated (raised) and the support plate (44) is attached to the electrical sealing jig (
5) Rise slightly further apart.

Then, at a position before completely attaching the electric sealing jig (5) to the tip tube, for example, at the position shown in FIG. 14B, the holding of the electric sealing chuck part 09) is temporarily released. With this release, the electrical sealing jig (5) is placed on the support plate (44). In this state, the tip tube (2) of the electrical sealing jig (5) is pushed up from below by pushing up the support plate (44).
) is completed (see Figure 14C). At this time,
The support plate (44) is supported by a spring (4) as shown in FIG.
5), so even if there is variation in the sealing length of the stem, the variation will be absorbed by the spring (4).
5) and the electric sealing jig (5) to the chip tube (2).
) can be reliably fitted. Next, lower the support plate (44) once.

Next, the positioning means for the cathode ray tube (1), that is, the neck chuck section (9) and the panel abutting means 0ω are released, and the cathode ray tube is supported only by the cone support section (7) and becomes movable. In this state, the operating part (57) is activated and the lever (47) on the exhaust cart side is operated to raise the diffusion pump head part (6) and attach it to the chip tube (2). At this time, the cathode ray tube (1) is in a movable state, so the head section (6) is smoothly attached to the tip tube (2), and damage to the tip tube (2) when the head section (6) is raised is prevented. Ru.

Then, the support plate (44) is raised again and the electrical sealing jig (
5) Fix.

The head chuck (38) is then released and separated from the diffusion pump head (6).

Next, as shown in FIG. 15, the exhaust cart (4) is moved to a position corresponding to the pump head gap tightener (63).
, and here tighten the pump head tightening gear (64).
) to the cap (53) of the diffusion pump head (6)
is rotated and tightened, the limp (51) collapses and comes into close contact with the tip tube (2), and the diffusion bomb head section (6) and tip tube (2) are hermetically sealed.

Thereafter, the exhaust cart (4) is sent to the furnace together with the cathode ray tube (1), the inside of the cathode ray tube (1) is evacuated, and the chip tube is electrically sealed.

According to this device, since the device body (3) is adjusted to the position of the exhaust cart (4) by the copying mechanism (35),
Variations in the stopping accuracy of the exhaust cart (4) are absorbed, and the positional relationship between the device body (3) and the exhaust cart (4) is determined correctly.

The neck chuck section (which constitutes the positioning means of the cathode ray tube)
9), the panel abutment means 00), and the cone receiver (7) have the same configuration as the positioning means when sealing the electron gun, so the positioning accuracy of the stem part is improved.

By measuring the position of the tip of the tip tube and correcting the position of the electric sealing chuck part 09) used for positioning the electric sealing jig based on the measured value, the tip tube ( It is possible to absorb the tilting error of 2) and align the tip of the tip tube (2) with the position of the sealing jig (5).

By providing the floating mechanism (31) using the RCC device (30) in the electrical sealing chuck part a9), assembly errors of the electrical sealing jig (5), etc. can be absorbed.

Also, after lifting the electric sealing jig (5) through the electric sealing chuck part 09) and inserting it halfway into the tip tube (2), release the electric sealing chuck part θ9) and insert the electric sealing jig (5) through the spring (45). Since the electrical sealing jig (5) is pushed up by the supported plate (44) to complete the installation, even if there is some variation in the sealing length at the stem part, this variation is corrected by the spring (45). Absorbed and securely electrosealing jig (5)
can be attached to the tip tube (2).

Furthermore, when attaching the diffusion bomb hand section (6) to the chip tube (2), the positioning relative to the cathode ray tube (1) is released so that the cathode ray tube (1) can move. Therefore, damage to the tip tube (2) when the diffusion pump head section (6) is raised can be prevented.

Therefore, the tip tube can be easily automatically attached to the exhaust cart during the exhaust and sealing steps.

〔Effect of the invention〕

According to the above-described apparatus of the present invention, when the chip tube of the cathode ray tube is attached to the exhaust cart, there are no variations in the stopping accuracy of the exhaust cart, errors in tilting the tip tube with respect to the tube axis of the cathode ray tube, and errors in assembling the sealing jig. It is possible to absorb variations in the sealing length in the stem portion of the tip tube, and to reliably attach the tip tube to the electric sealing jig of the exhaust cart and the end portion of the exhaust pump.

Therefore, it is possible to automate such mounting.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a cathode ray tube manufacturing apparatus according to the present invention, FIG. 2 is a plan view thereof, and FIG. -2. cross-sectional view on the line,
FIG. 4 is a sectional view along the Z2 Z2 line, and FIG. 5 is a sectional view taken along the line 23-2.
A cross-sectional view along the line, Figure 6 is a plan view of the electrically sealed chuck section, and Figure 7 is a cross-sectional view along the line.
The figure is a side view, FIG. 8 is a sectional view of the main part on the Za 24 line, FIG. 9 is a front view of the exhaust cart, FIG. 10 is a side view thereof, and FIG. 11 is a sectional view of the diffusion pump head. 12th
13 is a schematic configuration diagram of the support plate of the sealing jig, FIG. 13 is a configuration diagram for explaining the operation, FIGS. 14A, B, and C are diagrams for explaining the operation, and FIG. 15 is a diagram for explaining the operation. It is. (1) is a cathode ray tube, (2) is a chip tube, (3) is the main body of the device, (4) is an exhaust cart, (5) is an electric sealing jig, (6) is a diffusion bomb head, (9) is a neck Chuck part, (1
0) is a panel abutting means, 09) is an electrically sealed chuck part, (35) is a copying mechanism, and (38) is a helad chuck part.

Claims (1)

[Claims] Consisting of an apparatus main body and an exhaust cart on which the cathode ray tube is placed and transported, the exhaust cart is equipped with an electrical sealing jig and an exhaust pump head, and the apparatus main body includes: a copying mechanism for positioning the apparatus body with respect to the exhaust cart; a positioning means for positioning the cathode ray tube with respect to the apparatus body; an electric sealing jig positioning mechanism for positioning the electric sealing jig; a means for attaching the electric sealing jig to the chip tube; and a means for attaching the electric sealing jig to the chip tube; 1. A cathode ray tube manufacturing apparatus comprising means for attaching to a chip tube.