JPH0215489B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for attaching a vacuum tip tube to a vacuum double bottle mainly used for thermos bottles.

(Prior Art) In the era when bottle processing was done manually, this type of vacuum tip tube was of the side tip type, which was installed on the outer periphery of the bottom of the bottle where it would not get in the way.
Due to the automatic processing of bottles, it is difficult to install the tip tube in an eccentric position, so the tip tube is installed in the center of the bottom of the bottle. Simply apply a vacuum tip tube to the outer surface of the bottom, heat and melt the part of the bottle where the tip tube is applied, and make a hole.
A method has been used in which the edge of the perforation and the end of the tip tube are melted together.

(Problem to be Solved by the Invention) In the center tip type bottle, in which the tip tube is attached to the center of the bottom of the bottle, the tip tube is attached to the most downwardly protruding part of the bottom of the bottle, which is a downwardly convex curved surface. The length of the bottle will be about 23mm longer, and the outer case will be about 30mm larger, including extra space to protect the bottle. This makes the actual capacity relative to the apparent size considerably smaller. This makes the product unnecessarily bulky, increases material costs, transportation costs, warehouse costs, etc., and makes the product cost relatively high. On the other hand, if the tip tube is installed only by simply touching the outer surface of the bottom of the bottle, and the two parts are not in close contact over the entire area where it is applied, heat will be transferred from the locally heated part of the bottle to the end where the tip tube is applied. Conduction occurs only at one point, and before the end of the tip tube can be welded, the locally heated part of the bottle melts and a hole opens, causing the edge of the hole to sag.
It takes time until the end of the tip tube can be welded, and that delay causes various troubles at the welded part. Therefore, automatic momentary work may cause welding defects. Therefore, a certain degree of consistency is required between the outer surface of the bottle bottom and the end of the tip tube that is applied to it, and in the general case where a simple dimensioned tube is used as the tip tube, it is necessary to apply it from the normal line to the outer surface of the bottle bottom. It is preferable to attach the tip from the opposite direction, which limits the direction in which the tip tube can be attached.Even if the tip tube abutting end is slightly chipped, it may cause poor welding.

In addition, even if an attempt was made to solve the problems with automatically processed bottles by adopting a side tip type bottle in which a tip tube is installed on the outer periphery of the bottom of the bottle, the problem of installing the tip tube on the eccentric part of the bottom of the bottle would be inconvenient. In addition to the inconvenience of being restricted in the mounting direction of the tip tube as described above, a method and apparatus that can safely and reliably mass-produce side-tip type bottles has not yet been provided and is desired.

(Means for Solving the Problems) The present invention provides a method for solving the problems described above, in which one end of the vacuum tip tube is applied to the outer surface of the peripheral wall of the bottle, and the portion of the peripheral wall of the bottle where the vacuum chip tube is applied. In a method for attaching a vacuum tip to a vacuum double-bottom bottle, which involves heating and melting the vacuum tip tube to perforate the tube and welding one end of the vacuum tip tube to the edge of the perforation part, the vacuum tip tube abutment part on the peripheral wall of the bottle has a desired temperature from being softened by the heating to being perforated. At this point, the vacuum tip tube is pushed into the peripheral wall of the bottle by a predetermined amount.

It is preferable to perforate the peripheral wall of the bottle by heating it from the inside to melt a local part of the peripheral wall of the bottle, and at the same time blowing out the melted part through a vacuum tip pipe that is in contact with the outer surface of the melted part. be.

Further, as an invention of an apparatus for solving the above-mentioned problems, a bottle holding means for holding the bottle with the vacuum tip tube attachment part on the outer surface of the peripheral wall thereof exposed;
It has a vacuum chip tube holding part, and has an advanced position where the vacuum chip tube to be held is applied to the vacuum chip tube attachment part of the bottle peripheral wall held by the bottle holding means, and a push-in position where the vacuum chip tube is further pushed into the bottle peripheral wall by a predetermined amount from the advanced position. a vacuum chip tube applying means that is pushed in two steps to a position; a heating means that locally heats the vacuum chip tube attachment portion of the bottle held by the bottle holding means from within the bottle; and a vacuum tip tube of the bottle held by the bottle holding means. It is characterized in that the tube attachment part is equipped with a vacuum tip tube applying means and a blowing means for blowing through the vacuum tip tube held by the vacuum tip tube.

(Function) The vacuum tip tube applied to the bottle is pushed a little into the bottle when the part of the bottle where the tip tube is applied becomes melted or close to it due to local heating, and the gap between it and the peripheral wall of the bottle is reduced. It is welded to the bottle without any gaps. In particular, in the device, the operation of applying and pushing the vacuum tip tube onto the bottle is achieved by a single tip tube applying means, and furthermore, this means also functions as a blowing means for blow perforation performed as a pre-stage of the welding. do.

(Example) FIGS. 1 to 6 schematically show an example of a procedure for attaching a vacuum tip pipe according to the present invention. The bottle 2 to which the vacuum tip tube 1 is attached is a single outer bottle before being combined with an inner bottle (not shown), and is in the form of a narrow-mouth bottle with a large body diameter and a small diameter, and the mouth part is later cut out. It has an auxiliary extension part 2a for forming the bottle opening. The vacuum tip tube 1 is attached to a point near the outer periphery of the bottom of the bottle 2 on the axis of a rod-shaped burner 3 which is inserted into the bottle 2 toward that point.

The direction in which the vacuum tip tube 1 is applied to the bottle 2 is set at an angle α with respect to the normal n to the portion of the bottom outer surface of the bottle 2 where the tip tube 1 is applied, as shown in FIG. Between the cut end of the tip tube 1 and the bottom outer surface of the bottle 2, there is only point contact on the inside, and a gap S is created that opens outward. (Figure 1b).

The bottle 2 has the burner 3 inserted therein.
The axis of the bottle 2 is held vertically, and the axis of the bottle 2 is oriented at an angle β with respect to the vertical axis of the burner 3. In this position, the bottle 2 is rotated together with the tip tube 1 around the axis of the burner 3 while the vacuum tip tube 1 is applied to the bottom outer circumference from the axial direction of the burner 3, and the burner 3 and the bottle 2 are placed in a fixed position around the bottom of the bottle 2. It is preheated by a plurality of burners 4 arranged in the.

After this preheating, the bottle 2 is rotated about the axis of the burner 3 as shown in FIG.
is brought close to the bottom of the bottle 2 to locally heat the area where the vacuum tip tube 1 is applied.

When the part of the bottle 2 where the tip tube 1 is applied becomes softened before melting due to this local heating, the tip tube 1 is pushed into the bottom of the bottle 2 by several mm as shown in Fig. 3, and as shown in Fig. 3b. As can be seen, the end of the tip tube 1 is in close contact with the bottom of the bottle 2, and the entire area of the end of the tip tube receives heat from the local heating section of the bottle 2. From this stage, heating by the burner 4 is stopped.

Furthermore, the local heating by the burner 3 continues, and the tip tube abutting end of the bottle 2 and the tip tube 1 abutting end almost simultaneously reach a molten state or a state close to it, and in this state, blowing through the tip tube 1 to the local heating section will be held. As a result of this blowing, the portion of the bottle 2 where the tip tube 1 is applied is blown out at its center, as shown in FIG. 4, and the hole 5 is opened.

The hole edge of the hole 5 increases in diameter as the melting progresses, and when it reaches the diameter of the abutting end of the tip tube 1, the abutting end of the tip tube 1 is also in a molten state or a state close to it, and as it is, Alternatively, the rear edge of the rear hole 5 and the upper end edge of the tip tube 1 are melted and integrated for a short period of time, and as shown in FIG. 5, the melted and integrated portion is cooled by blowing air through the burner 3. The melted portion is solidified, and the installation of the tip tube 1 is completed.

Immediately after the installation of the tip tube 1 is completed, the burners 3 and 4 are ignited again, and the entire bottom and portion of the bottle 2 where the tip tube 1 is attached are reheated to remove thermal distortion (FIG. 6).

An example of a device for attaching the vacuum tip tube 1 is shown in FIG. 7 and below. As seen in FIG. 7, bottle holding means 11 as shown in FIG. 8 are mounted on the outer periphery of the turntable 10, which is driven to rotate intermittently, at equidistant positions corresponding to the pitches of the intermittent rotation. The bottle 2 is held by each bottle holding means 1.
1 and 1 are intermittently stepped to a common stop position.

The bottle holding means 11 holds the bottle 2 by means of four holding members 13 mounted on the vertical rotation shaft 12.
is received and held in the oblique positions shown in FIGS. 1 to 6 and 8, and the axis of the burner 3 directed toward the tip tube 1 abutment part of the bottle 2 is on the same vertical axis as the axis of the tip tube 1. That's what I do. Although a known spring force acts to hold the bottle 2, illustration and explanation thereof will be omitted.

The burner 3 of the bottle 2 and the tip tube 1 are rotated about their axes by belt transmission of the rotary shaft 12 to a driven pulley 114 mounted at its lower end (FIG. 9).

The bottle holding means 11 is equipped with a tip tube fitting means 20 as shown in FIG.
It is moved intermittently by the turntable 10 together with the bottle holding means 11. The tip tube applying means 20 includes an elevating shaft 21 vertically extending vertically within the rotating shaft 12 of the bottle holding means 11, and this elevating shaft 21.
The lifting shaft 21 has a tip tube holder 22 attached to the protruding end thereof onto the rotating shaft 12, and the vertical groove 23 of the lifting shaft 21 fits into the pin 24 on the rotating shaft 12.
The tip tube holder 2 is rotatable as a unit, and its vertical movement range, especially the downward movement position, with respect to the bottle holding means 11 is restricted, and the tip tube holder 2
The tip tube 1 received in the bottle 2 is elastically locked at a height position where the tip tube 1 is applied to a predetermined position of the bottle 2.

The annular groove 25 has a slight play in the vertical direction with respect to the click stopper 26, and allows the lift shaft 21 to be raised about 3 mm further from the height position at which the tip tube is applied to the bottom of the bottle 2. 1 into the bottom of bottle 2. In addition, a passage 27 is formed in the lifting shaft 21 for both blowing and dropping of broken chip tubes, and this passage 27 is always kept half open, and is fully opened manually or automatically as necessary to ensure that the broken tip tubes are removed. A slide shutter 28 is provided to allow the drop to fall.

Bottle holding means 11 and tip tube fitting means 2
The stop positions due to intermittent movement of 0 are from the first stop position S1 to the 16th stop position S16 shown in FIG. 7, and are variously designed depending on the number of steps and processing method.

In the first stop position S1, the tip tube holder 22 is in the downward movement position and receives the insertion of the vacuum tip tube 1, but the push-up member 29 (the tenth
The flange 21a is
It is designed so that it can be pushed up to the position where the tip tube is applied. At the next second stop position S2,
A bottle holding means 11 receives the bottle 2, and a predetermined portion of the bottle 2 comes into contact with the tip tube 1.

Further, at the final stop position S16, the bottle 2 that has undergone the tip tube attachment process is taken out from the bottle holding means 11. For these operations, the rotational drive of the bottle holding means 11 relative to the rotating shaft 12 is stopped at each stop position S1, S2, S16.

A large number of gas supply connection ports 30 are provided around the outside from the third stop position S3 to the fifteenth stop position S15, and the burner 4 for heating adjustment to the bottom of the bottle 2 is provided except in specific cases. At the same time, the bottle holding means 11 is rotated.

Also, from the fourth stop position S4 to the thirteenth stop position S13
At each stop position up to, a burner 3 inserted into a bottle 2 held by a holding means 11 and moved intermittently up to a predetermined position is moved by an elevating means 3 using an air cylinder or the like.
1, and is inserted each time the bottle 2 advances and stops, and is removed before the bottle 2 starts to be moved to the next stop position, and the tip tube at the bottom of the bottle 2 is inserted. Local heating of the applied part 1 can be performed without interfering with the intermittent movement of the bottle 2.

The height of the burner 3 that performs preheating from the fourth stop position S4 to the seventh stop position S7 is set so that the heating is performed from a position where the tip of the flame is appropriately separated from the bottom of the bottle 2. On the other hand, the bottom of the bottle 2 from the eighth stop position S8 to the tenth stop position S10 is locally baked and heated, and the hole 5 is perforated thereby.
The height of the burner 3, which fuses the hole edge of the bottle 2 with the tip tube 1, is set so that the tip of the flame heats the bottle 2 from a position where it reaches the locally heated portion.

At the ninth stop position S9, where the tip tube 1 abutting portion of the bottle 2 reaches a molten state or a state close to it by the local baking heating, a tip tube minute push-up member 32 shown in FIG. Lifting axis 2
It is provided opposite to the flange 21a of 1,
The lift shaft 21 is slightly pushed up by about 3 mm by the operation of a cylinder, etc., and the tip tube 1 that is in contact with the bottle 2 is pushed into the bottom of the bottle 2.
This ensures that the gap between the tip tube 1 and the part of the bottle 2 to which it is applied is eliminated.

At the next tenth stop position S10, a blow shaft 33 as shown in FIG. 12 is provided facing the lower end of the lifting shaft 21, and is moved upward by a cylinder or the like and connected to the lower end of the lifting shaft 21. The locally heated and melted tip tube 1 abutting portion of the bottle 2 is blown through the lifting shaft 21, the tip tube holder 22, and the tip tube 1, and a hole is made by blowing it out.

The burner 3 provided at the 11th stop position S11 is
It is connected to an air supply source in a timely manner to air-cool the fused state of the hole edge of the hole 5 of the bottle 2 and the upper end of the tip tube 1 as shown in FIG.
It is designed to obtain the installation status. Further, at this stop position, a push-down roller 34 as shown in FIG.
1 is moved downward, and the tip tube holder 22 attached to the bottom of the bottle 2 is pulled downward from the tip tube 1.

At the 12th and 13th stop positions S12 and 13, the burners 3 and 4 as shown in FIG. I'm trying to make it happen. The bottle 2, which has had its thermal distortion removed by the post-roasting process, can be manually or automatically removed from the bottle holding means 11 at the 16th stop position S16.

Note that 35 indicates a hand-held operation box, and 36 indicates a control panel. In addition, oxygen is forcibly supplied to the heating by the burner 3 to help burn the fuel gas in the bottle 2. Fuel gas and oxygen are also supplied to the burner 3 through the connection port 30.

(Effects of the Invention) According to the present invention, the vacuum tip tube applied to the bottle is slightly pushed into the bottle when the tip tube contacting part of the bottle is in a molten state or in a state close to it, and the tip tube and the bottle are welded. Therefore, even if the contact portions of the bottle and the tip tube do not align and there is a gap when the tip tube is applied, this gap is eliminated before the two are welded together, and any part of the bottle and the tip tube is in sufficient contact and fused together to form a weld. Therefore, even if the tip tube is slightly damaged, welding failure will not occur.
No matter which part of the bottle the tip tube is applied from which direction, the welding is ensured and the degree of freedom in attaching the tip tube is improved. As a result, even side-tip type bottles can be mass-produced safely and reliably by automatic processing. Further, as for the device, the fitting of the tip tube and the pushing and blow drilling can be easily and reliably achieved even in automatic processing by a single tip tube fitting means.

[Brief explanation of drawings]

1 to 6 are schematic side views and partially enlarged sectional views showing an example of a procedure of the method of the present invention, FIG. 7 is a schematic plan view showing an embodiment of the apparatus of the present invention, and FIG. A side view of the bottle holding means, FIG. 9 is a longitudinal sectional view of the vacuum tip tube fitting means, FIG. 10 is a sectional view showing the push-up member for tip tube fitting, and FIG.
The figure is a sectional view showing the tip tube micro-pushing member, No. 12.
The figure is a sectional view of the blow shaft. 1... Vacuum chip tube, 2... Bottle, 3,
4... Burner, 10... Turntable, 11...
...Bottle holding means, 20...Tip tube fitting means.

Claims (1)

[Scope of Claims] 1. One end of the vacuum chip tube is applied to the outer surface of the peripheral wall of the bottle, and the portion of the peripheral wall of the bottle where the vacuum chip tube is applied is heated and melted to make a hole, and the one end of the vacuum chip tube and the hole edge of the perforation are pierced. A method for attaching a vacuum tip tube to a vacuum double-bottom bottle by welding the vacuum double bottle with the vacuum tip tube is characterized in that the vacuum tip tube is pushed into the bottle circumferential wall by a predetermined amount at a desired point from when the vacuum tip tube fitting part of the bottle peripheral wall is softened by the heating to perforation. How to install vacuum tip tubes for vacuum double bottles. 2. Bottle holding means for holding the bottle with the vacuum tip tube attachment part exposed on the outer surface of the peripheral wall thereof; Vacuum tip tube applying means that is pushed in two steps between an advanced position for application and a pushing position for further pushing the vacuum tip tube into the peripheral wall of the bottle by a predetermined amount from the advanced position; and attachment of the vacuum tip tube of the bottle held by the bottle holding means. and a blowing means for blowing air through the vacuum tip fitting means and the vacuum tip tube held by the vacuum tip tube attachment part of the bottle held by the bottle holding means. Features a vacuum tip tube mounting device for vacuum double bottles.