JP3139140B2 - Neck tube cleaning / drying method and cleaning / drying equipment used in the method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning and drying a glass neck tube used for a neck portion of a CRT, and a cleaning and drying tool used in the method.

[0002]

2. Description of the Related Art The neck portion of a CRT is required to have an extremely clean inner surface because an electron gun for emitting an electron beam is mounted inside the neck portion and a very high voltage is applied to the neck portion. You.

[0003] Such a neck tube used for a neck portion of a CRT is usually manufactured by cutting a raw glass tube into a predetermined length, heating one end of the tube with a burner, and expanding the diameter of the tube into a flared shape. . However, fine particles, fibrous or extremely thin film-like dirt generated from glass powder, dust in a factory, oil mist, a cardboard case, etc. adheres to the inner and outer surfaces of the neck tube during these processing steps and transport. Therefore, the neck tube is cleaned with a cleaning liquid to clean the surface.

Conventionally, the neck tube after cutting and expanding is sent to the washing step in a state where the flare portion is directed upward in the outer box having the inside partitioned and partitioned and supported with the neck suspended. In the washing process, the neck tubes are manually pulled out of the outer box one by one, and placed on a pallet for washing with the flare portion facing upward.
Inserted and supported one by one, immersed in a cleaning solution to wash, and after washing, flipped upside down one by one by hand and transported to the drying process with the flared part facing down to the drying step and dried. After drying, the sheets are again turned upside down in the outer box one by one by hand. The reason that the neck tube is turned upside down in the drying step and placed upright on the drying board is that even if the washing droplets in the washing step are sent to the drying step while remaining attached to the neck tube, the weight of the neck tube is reduced. Flow down to the lower end with
This is to prevent dirt from being left at the welding end to the funnel (the end opposite to the flare portion).

[0005]

In the conventional method of cleaning and drying a neck tube, a conventional method for transferring a neck tube from an outer box to a cleaning pallet before cleaning, and after cleaning, arranges the neck tube from the cleaning pallet onto a drying board. Since the operation and the operation of returning from the drying bed to the outer box after drying were performed by manually transferring the neck tubes one by one, there was a disadvantage that the operation efficiency was poor.

In addition, since the neck tube is heated at the time of welding with the funnel, even a slight damage such as a dent at the welding end with the funnel may cause poor welding.
The arrangement interval to the drying board has to be increased to some extent, and the flare section is only placed upright on the drying board with the flared part facing down. However, the drying efficiency was poor.

The present invention has been proposed in view of the above-mentioned drawbacks of the conventional method for cleaning and drying a neck tube, and an object of the present invention is to provide a method for cleaning and drying a neck tube without the necessity of transferring the neck tube. An object of the present invention is to provide a method for cleaning and drying a neck tube, which enables drying, improves work efficiency and saves labor, and a cleaning and drying tool used in the method.

[0008]

In order to achieve the above object, the method of the present invention comprises a partition member for partitioning and supporting an individual neck tube so that the lower end thereof does not contact the bottom surface of the outer box. The neck tube is inserted into each compartment of the partition member, and the whole is turned upside down by covering the tray on the partition member.Then, the outer box is pulled out, and the neck tube is supported by the tray. And, in a state where the neck tube is prevented from falling down by the partition member, the washing process and the drying process are sequentially supplied to perform the washing and drying processes on the neck tube, and after drying, the outer box is again covered and the whole is turned upside down. Then, the tray is removed.

Further, the cleaning / drying tool of the present invention provides a cleaning / drying tool.
Outer box removed during drying, and can be installed in the outer box,
A partition member having a plurality of compartments for partitioning and supporting each neck tube so that its lower end does not contact the bottom surface of the outer box while securing a liquid passing space around each neck tube, and detachable on the partition member And a tray having a support surface for supporting the lower end of the neck tube inserted in each of the compartments of the partition member in the upside-down state and having a large number of liquid passage holes.

[0010]

According to the method of the present invention, a partition member is first mounted in an outer box, and the partition member is sent to a cleaning step with a neck tube inserted into each compartment. Therefore, in the cleaning process, the outer box is removed after the tray is put on the partition member and the whole is turned upside down. Thus, the lower end of the inverted neck tube is supported by the tray, and the neck tube is prevented from falling down by the partition member. Washing and drying are performed in this state. In this state, the flared portion of the neck tube is downward. Therefore, no stain or the like due to the residual adhesion of the cleaning droplet remains on the funnel welded end of the neck tube after drying. Then, after drying, when the entire body is turned upside down by covering the outer box, each neck tube is supported again by the partition member. Therefore, the tray can be removed. Thus, according to the method of the present invention, the work of transferring the neck tube is not required.

[0011] Further, the partition member and the tray of the present invention include:
Since it has a liquid passage space and a liquid passage hole, it does not hinder the cleaning action by the flow of the cleaning liquid, and does not hinder the drying action by the flow of hot air in the drying step.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a process sequence of a method according to the present invention. A first process (a) is a process of mounting a partition member (2) in an outer box (1). The second step (b) is a step of inserting the neck tube (4) into the individual compartments (2a) of the partition member (2) with the flare portion (4a) facing upward. The third step (c) is a step of placing the tray (3) on the partition member (2) into which the neck tube (4) has been inserted. The fourth step (d) is a step of inverting the whole. The fifth step (e) is a step of extracting the outer box (1). Sixth
Step (f) is a washing step, and seventh step (g) is a drying step. The eighth step (h) is a step of covering the outer box (1), and the ninth step (i) is a step of turning the whole case upside down. The tenth step (j) is a step of removing the tray (3). In the sixth step (f), the neck pipe (4) is washed by immersing it in the washing tank (6) containing the washing liquid (5). In the seventh step (g), the conveyor (7) is washed. ) To the drying furnace (8) for cleaning and washing the neck tube (4)
Is allowed to dry.

[0013] The cleaning and drying tool of the present invention comprises an outer box (1).
And a partition member (2) and a tray (3).

First, the outer box (1) is, as shown in FIG.
It has a rectangular box shape with an open upper surface, and a corner support (1a) is provided at the four corners for both reinforcing the outer box (1) itself and positioning the partition member (2). The corner support (1a) is provided with a locking step (1) for positioning the partition member (2) mounted in the outer box (1) in the height direction.
b). In this embodiment, the case where the outer box (1) is made of corrugated cardboard and the corner support (1a) is made of a resin molded product (for example, polypropylene resin or the like) is illustrated. In addition, it may be integrally formed.

The partition member (2) is shown in FIGS.
As shown in (1), while supporting the liquid flow space (2b) around each neck tube (4), each neck tube (4) is partitioned and supported such that the lower end does not contact the bottom surface of the outer box (1). It has a plurality of compartments (2a). Each of the compartments (2a) is formed into a substantially square shape by vertical and horizontal grid-like walls (2d) integrally formed in a rectangular peripheral wall (2c), and is partitioned from the center of the wall surface of each side of the substantially square shape. Support ribs (2e) protruding toward the center of the chamber (2a) are integrally formed, and the support ribs (2e) are formed integrally with the compartment (2a).
The neck tube (4) is suspended by its flared portion (4a) while securing a liquid flow space (2b) around the neck tube (4) and preventing the neck tube (4) from swaying. The upper end surface is a tapered surface (2f) corresponding to the flare portion (4a). The inward projection of each support rib (2e) in the compartment (2a) is such that a slight gap is formed on the outer periphery of the neck tube (4).

As shown in FIG. 4, when the partition member (2) is mounted in the outer box (1), the four corners of the rectangular peripheral wall (2c) are formed on the engaging step (1b) of the corner support (1a). By locking the lower end surface, positioning in the height direction is performed.

As shown in FIGS. 3A and 3B, the tray (3) is provided in a rectangular frame (3a).
b) is integrally formed so that the lower surface is used as a support surface (3c) of the neck tube (4), and the liquid passage holes (3) are formed around the support surface (3c).
d).

When the tray (3) is put on the partition member (2), the grid-like bar (3b) is located at the center of each compartment (2a) of the partition member (2). When the tray (3) is put on the partition member (2) and the whole is turned upside down together with the outer box (1), each partition of the partition member (2) is arranged. The lower end of the neck tube (4) in the picture room (2a) is supported by a support surface (3c) formed of a cross-shaped intersection of a grid-like bar (3b) of the tray (3). When the whole is turned upside down together with the outer box (1) as described above, the flare portion (4a) of the neck tube (4) faces downward,
Since it cannot be supported by the partition member (2), it is supported by the tray (3).

Therefore, the rectangular frame (3a) of the tray (3)
Has a plane contour substantially the same as the partition member (2),
An engaging leg (3e) is provided on the lower surface of the four corners so that the partitioning member (2) can be detachably mounted on the partition member (2), and a locking member (3f) is provided on at least two opposing sides of the outer periphery. It is a thing. The locking member (3f) is removably locked to a locking portion (not shown) formed at a position corresponding to the rectangular peripheral wall (2c) of the partition member (2). This is for preventing the partition member (2) from separating and floating from the tray (3) in the cleaning step (1).

The partition member (2) and the tray (3) are formed of a resin (for example, a polypropylene resin or the like) having a property of withstanding the cleaning liquid in the washing step and a property of withstanding the heat of the drying step. .

The above is the configuration of the tool for cleaning and drying a neck tube according to the present invention. Next, the operation will be described.

As shown in FIG. 1, first, a first step (a)
Then, the partition member (2) is mounted in the outer box (1), and then, in the second step (b), each compartment (2a) of the partition member (2).
The neck tube (4) is inserted with the flare portion (4a) facing upward. Then, after the tray (3) is put on the partition member (2) in the third step (c), the whole is turned upside down in the fourth step (d), and the outer box (1) is placed in the fifth step (e). ). In this state, the neck tube (4) is supported by the tray (3) with the flare portion (4a) facing downward, and the lateral run-out is prevented by the partition member (2). In this state, it is sent to the sixth step (f), immersed in the cleaning liquid (5) in the cleaning tank (6), and cleaned by, for example, ultrasonic cleaning. At this time, in order to clean the neck tube (4) well, the partition member (2) is used.
Is provided with a liquid passage space (2b), and the tray (3) is also provided with a liquid passage hole (3d). Further, during the washing, the weight of the neck tube (4) acts on the tray (3) and sinks in the washing liquid (5). However, the partition member (2) may be lifted. The locking member (3f) is provided on the tray (3) to lock the partition member (2) to the tray (3) to prevent the tray (3) from floating. After the washing, the neck tube (4) is placed on the conveyor (7) for the drying step of the seventh step (g) with the tray (3) and the partition member (2) as they are, and the drying furnace (8) ) And dried. During this drying,
Liquid passage space (2b) of partition member (2) and tray (3)
The flow of hot air to the neck tube (4) is performed favorably by the liquid passage hole (3d). Since the neck tube (4) is dried with the flare portion (4a) facing downward, even if the washing droplets adhere to the neck tube (4), the washing droplets flow down by their own weight. Dirt does not adhere and remain on the funnel welded end. After drying, the outer box (1) is covered in an eighth step (h), and the whole is turned upside down in a ninth step (i). In this state, the flare portion (4a) of the neck tube (4) faces upward, and the neck tube (4) is supported by each of the compartments (2a) of the partition member (2) in a hanging manner by the flare portion (4a). Therefore, the tray (3) is removed in the tenth step.

The above is the operation of washing and drying the neck tube of the present invention. After that, the neck tube (4) is shipped in a state of being partitioned and supported by the partition member (2) in the outer box (1). You.

[0024]

According to the method of the present invention, when cleaning and drying the neck tube, the neck tube is transferred using the partition member and the tray. Can be eliminated, and problems such as generation of scratches due to transfer and breakage of the neck tube due to lodging during drying are eliminated, and product yield is improved, as well as labor saving and workability can be improved.

Further, according to the tool for cleaning and drying a neck tube of the present invention, the flow of the cleaning liquid and the flow of hot air during drying are not hindered.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a process sequence of a method for cleaning and drying a neck tube according to the present invention.

FIG. 2A is a plan view of a partition member, and FIG. 2B is a plan view of the partition member.
FIG. 3 is a vertical cross-sectional view of the partition member taken along line AA of FIG.

3A is a plan view of the tray, and FIG. 3B is a longitudinal sectional view of the tray along line AA in FIG. 3A.

FIG. 4 is a partial longitudinal sectional view of a corner portion of the outer box showing a relationship between the outer box, a partition member, and a tray.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer box 2 Partition member 3 Tray 4 Neck tube

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01J 9/38

Claims (2)

(57) [Claims] A partition member for partitioning and supporting each neck tube so that its lower end does not contact the bottom surface of the outer box is mounted in the outer box, and the neck tubes are respectively placed in the respective partition chambers of the partition member. After inserting the tray over the partition member and turning the whole upside down, pull out the outer box, support the neck tube with the tray, and prevent the neck tube from falling down with the partition member. The neck tube is washed and dried by sequentially supplying to the drying step, and after drying,
A method for cleaning / drying a neck tube, wherein the outer tube is again covered, the whole is turned upside down, and then the tray is removed. 2. An outer box that is removed during washing and drying, and an outer box that can be mounted in the outer box. A partition member having a plurality of partition chambers for partitioning and supporting the bottom surface so as not to contact the bottom surface, and a lower end thereof is supported when the neck tube inserted in each partition chamber of the partition member in a vertically inverted state is detachably mounted on the partition member. A cleaning / drying tool for a neck tube, comprising: a tray having a supporting surface to be formed and having a plurality of liquid passage holes.