JPH0353929B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for manufacturing an outer bottle for a vacuum double bottle used for thermos bottles and the like.

(Prior Art) In the era when bottle processing was done manually, the vacuum tip tube was of the sand 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. This method is carried out by simply applying a vacuum tip tube to the outer surface of the bottom, heating and melting the tip-applying portion of the bottle to make a hole, and welding the edge of the perforated portion to the tip-applying end of the bottle.

(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 before 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 install from the opposite direction.
The mounting direction of the tip tube will be controlled, and even if the end of the tip tube is slightly chipped, it may cause poor welding.

The restriction on the direction in which the tip tube is attached is that even if an attempt is made to solve the problems with the automatic processing bottle by adopting a sand tip type bottle in an automatic processing method, the tip tube will be attached almost on the normal line of the tip tube attachment part at the bottom of the bottle. As a result, the attached tip tube protrudes beyond the perpendicular line to the bottle side circumferential surface, not only before it is fused and closed at the vacuum stairway, but also after it is fused and closed. If the vacuum tip tube protrudes from a vertical line with the side surface of the bottle or a horizontal tangent to the bottom of the bottle, the tip tube is more likely to hit another object on the protruding side than the outer surface of the bottle. The tip tube itself is susceptible to concentrated loads and tends to exert concentrated loads at the base of the outer bottle in which it is installed. Furthermore, even the steady movement of the bottle can easily result in a shocking external force.
For this reason, as mentioned above, the bottles are more likely to be damaged as they easily come into contact with other objects, which causes a decrease in yield in the manufacturing process, and the work efficiency is also lowered due to the troublesome handling. This problem is especially serious when considering that if the vacuum tip tube protrudes outward from a line perpendicular to the side circumferential surface of the bottle, it is rotated during bottle processing and is often turned over when handled.

Furthermore, Japanese Patent Application Laid-Open No. 53-8859 discloses a method for melting a chip tube for a sandwich-chip type vacuum double bottle outer bottle to solve this problem. In this case, the tip tube, which is conventionally installed in the normal direction on the side of the bottom of the bottle,
For safety of the tip tube and ease of handling of the bottle, the tip tube is bent inward from the middle part.The tip tube is attached while holding the bottle diagonally and moving eccentrically during processing, and then the tip tube is bent. The purpose of this method is to eliminate the troublesome process of the bottle bottom, and a press mold is applied from above to an eccentric position at the bottom of the bottle, causing the bottle to bulge downward in a vertical direction parallel to the bottle axis. A chip tube is butted against the lower end of the tube to make a fusion connection.

However, this method requires a step to form a localized bulge at the bottom of the bottle in order to weld the tip tube, which increases the number of steps and time required, and requires complicated and large machinery. This makes the product expensive.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the first invention of the present application provides an existing narrow-mouth bottle whose body diameter is approximately twice or more than the diameter of the bottle mouth. , apply a vacuum tip tube from the straight line direction or a direction close to this to a point on a straight line passing through the bottle opening on the outer periphery of the bottom, and then move the part of the bottom of the bottle where the vacuum tip tube is applied through the bottle opening onto the straight line. A heating means inserted into the bottle from the direction superheats and melts the bottle to make a hole, and the vacuum tip tube is welded to the hole, and the vacuum tip tube is swung around the welding base to form the straight line. It is characterized by correcting the bottle from an inclined position at or near the direction of the bottle to a vertical position parallel to the axis of the bottle.

The second invention of the present application has a bottle holding means for holding the bottle with the vacuum tip tube attachment part exposed on the outer surface of the bottom thereof, and a vacuum tip tube holding part, and the vacuum tip tube to be held is held in the bottle by the bottle holding means. Vacuum chip tubes that are advanced or retracted in a direction that is normal to or close to the normal line to the vacuum chip tube attachment section at the bottom of the bottle between an advanced position that corresponds to the vacuum chip tube attachment section at the bottom and a tip tube receiving position that is retreated from that and receives the vacuum chip tube. a heating means for locally heating the inside of the bottle by advancing and retracting the vacuum tip tube attachment part of the bottle held by the bottle holding means through the narrow mouth of the bottle; and a heating means for locally heating the vacuum tip tube of the bottle held by the bottle holding means The blowing means blows through the applying means and the vacuum chip tube held therein, and the vacuum chip tube is melted and integrated with the hole edge of the perforation formed by heating and melting the bottom of the bottle, while the melting and integrating part is in a softened state. The apparatus is characterized by comprising an attitude correction means that is controlled to be pushed from one side and corrects the mounting attitude of the bottle peripheral wall from an attitude inclined to the bottle axis to an attitude parallel to the bottle axis. .

(Function) In the above configuration of the first invention of the present application, the vacuum tip tube to which the bottle bottom is welded is applied to a predetermined point set on the outer periphery of the bottle bottom on a straight line passing through the narrow bottle mouth. The vacuum chip tube can be applied from a direction that is on the normal line of the outer circumferential surface of the bottle bottom or from a direction that is close to this and where it is difficult to form a gap between the tube and the outer circumferential surface of the bottle bottom and where it is easy to weld to the bottom of the bottle. The applying part is heated from inside the bottle toward the vacuum chip tube in the axial direction of the vacuum chip tube by the heating means that enters from the linear direction through the bottle mouth, and heats and melts the bottom of the bottle on the vacuum chip tube while heating both sides. Welding can be carried out within a minimum melting range, and even if the heating means is rotated around the straight line, the heating means and the vacuum chip tube facing each other in the straight line will not get in the way, and the contact between these and the bottom of the bottle will be avoided. Since the facing position and posture do not change, the welding of the bottom of the narrow-mouth bottle and the vacuum chimp tube at the predetermined point can be automatically and uniformly and reliably achieved without the influence of the narrow-mouth or force. can.

Furthermore, by swinging the welded vacuum tip tube around its welded base to the bottom of the bottle, a large movement of the tip can be obtained by a small angle change of the vacuum tip tube, and the bottle can be moved from the linear direction or an inclined position close to this. Since the vacuum tip tube is efficiently corrected in the direction parallel to the axis of the bottle, it is automatically oriented so that it does not come out from the side circumference of the bottle and the lowest part of the bottom when the vacuum tip tube is fused and closed during the vacuuming stage of the double bottle. It can be easily and reliably obtained through processing.

In addition, since the welding base, which is the center of the swing when correcting the posture of the vacuum tip tube, is set as the melted part of the minimum necessary range to the bottom of the bottle, the swing for correcting the posture of the vacuum tip tube can be controlled at the predetermined point. It is possible to carry out the process properly, focusing on the automatic processing, and it is difficult to cause variations in the corrected posture of the vacuum chip tube, and since other unnecessary deformations are not caused, both quality and yield are improved.

In the above configuration of the second invention of the present application, the method of the first invention of the present application can be automatically achieved by the operation of each means, and in particular, the perforation by heating and melting of the vacuum tip tube fitting portion of the bottle can be performed automatically. By blowing through the vacuum tip tube, it is possible to achieve a proper position and range that does not come off the weld without special blowing members or positioning.

(Example) FIG. 1 shows an example of an automatically processed vacuum double bottle for a thermos bottle according to the present invention. To explain this, as shown in the figure, vacuum double bottle 1
The vacuum tip tube 2 provided on the outer periphery of the outer surface of the bottom of the bottle 1 is formed vertically so that it does not protrude from both the vertical line a to the side circumferential surface of the bottle 1 and the horizontal tangent line b to the bottom surface of the bottle 1. has been done.

This makes it difficult for the tip tube 2 to come into contact with other objects.

Such a vacuum double bottle 1 consists of an inner bottle 1a and an outer bottle 1 that are individually molded as shown in FIG.
b are combined and integrated by welding, and the air between the inner bottle 1a and the outer bottle 1b is suctioned and removed through the tip tube 2 to form a vacuum insulation space 3, and then the tip tube 2
Obtained by fusing and sealing.

Now, to briefly describe the procedure for forming the vacuum double bottle 1, including the installation of the tip tube 2, which is particularly adopted in the present invention, as shown in FIG.
A is formed by cutting out the auxiliary edge 4 with a cooling cutter 5 or the like from an inner bottle material 1a1 which is formed with an auxiliary edge 4 for mouth shaping. On the other hand, the outer bottle 1b has a tip tube 2 attached by welding to an outer bottle material 1b2 formed with an auxiliary edge 6 for mouth shaping to form an outer bottle material 1b1, and a tip tube attached to this outer bottle material 1b1. When the welded portion 2 is in a softened state, it is pushed by a pusher 7 or the like to correct the vertical posture, and the auxiliary edge 6 is cut off by a cooling cutter 8 or the like.

The vacuum double bottle 1 is formed by fitting and integrating the inner bottle 1a and the outer bottle 1b as follows. A spacer pad 9 between the inner bottle 1a and the outer bottle 1b is attached to the bottom outer surface of the inner bottle 1a, and the outer bottle 1b, which is divided into two by a cooling cutter 10 or the like in the middle of the body, is placed on this spacer pad 9. After that, the two parts of the outer bottle 1b are welded, and the inner bottle 1a and the outer bottle 1 are
The mouth portions of b and b are welded together. This mouth welded portion is shaped by the mold fitting of the shaping mold 11. Next, the air between the inner bottle 1a and the outer bottle 1b through the tip tube 2 is suctioned and removed to form an insulating vacuum space 3, and the tip tube 2 is pulled up and down while being fused and closed, thereby creating a double vacuum space. Finish forming the bottle.

Next, a specific procedure example of a method for attaching a tip tube in forming the outer bottle 1b with a tip tube according to the present invention is shown in FIGS. 3 to 6.

The bottle to which the tip tube 2 is attached is an outer bottle material 1b1 with an auxiliary rim 6, and is in the form of a so-called narrow-mouth bottle with a large body diameter and a small diameter. The tip tube 2 is applied to a point near the outer bottom of the outer bottle material 1b1 on the axis of a rod-shaped burner 13 that is inserted into the outer bottle material 1b1 toward the point. This applying direction is the normal n erected to the applying part of the chip tube 2 on the outer surface of the bottom of the outer bottle material 1b1.
As shown in FIG. 3, the end of the chip tube 2 and the bottom outer surface of the outer bottle material 1b1 only make point contact on the inside, and there is no contact on the outside. A gap S is created that opens toward.
(FIG. 3b) The outer bottle material 1b1 is held such that the axis of the burner 13 inserted therein faces vertically, and the outer bottle material 1b1 is held with respect to the vertical axis of the burner 13.
The axis of is oscillated by an angle β. With the outer bottle material 1b1 in this position, the vacuum tip tube 2 is attached to the burner 1.
While being applied to the bottom outer periphery from the 3-axis direction,
It is rotated together with the tip tube 2 around the axis of the burner 13, and is preheated by the burner 13 and a plurality of burners 14 arranged at fixed positions around the bottom of the outer bottle material 1b1.

After this preheating, the outer bottle material 1b1 is rotated around the axis of the burner 13 as shown in FIG. locally heated.

When the tip tube 2 abutting part of the outer bottle material 1b1 becomes softened before melting due to this local heating, the tip tube 2 is placed at the bottom of the bottle 1 in numbers as shown in FIG.
mm, the tip tube 2 is pushed in tightly to the bottom of the bottle 1, as shown in Figure 5b, and the tip tube 2 is pushed in tightly to the bottom of the bottle 1.
The entire area of the applied end receives heat from the local heating area. From this stage, heating by the burner 14 is stopped.

Furthermore, local heating by the burner 13 continues,
The tip tube 2 abutting part and the tip tube 2 abutting end of the bottle 1 are almost simultaneously in a molten state or a state close to it, and in this state, blowing is performed through the tip tube 2 to the local heating section. As a result of this blowing, the tip tube 2 abutting portion of the outer bottle material 1b1 is blown out at its center, as shown in FIG. 6b, and the hole 15 is opened.

The hole edge of the hole 15 increases in diameter as the melting progresses, and when it reaches the diameter of the abutting end of the chip tube 2,
The abutting end of the tip tube 2 is also in a molten state or a state close to it, and the hole edge of the hole 15 and the upper end edge of the tip tube 2 are fused and integrated as is or after a short period of time. While this fused and integrated portion is softening, the tip tube 2 is pushed by the pusher 11 as shown in FIG. 7, and the tip tube 2 is corrected to a position in which it comes into contact with the guide 12. This posture is parallel to the axis of the outer bottle material 1b1,
When the bottle is in its normal position, it faces vertically.

After correcting the posture of the chip tube 2, as shown in FIG. Completed in corrective condition.

Immediately after the installation of the tip tube 2 is completed, the burners 13 and 14 are ignited again, and the tip tube 2 of the bottle 1 is ignited again.
The attachment part and the entire bottom part are reheated to remove thermal distortion (Figure 8).

An example of a device for attaching the vacuum tip tube 2 is shown in FIG. 9 and below. As seen in FIG. 9, bottles are held on the outer periphery of the turntable 20, which is driven to rotate intermittently, at equal positions corresponding to the pitches of the intermittently rotated, by means of bottle holding means 21 as seen in FIG. 1, and the held outer bottle material 1b1 is successively and intermittently advanced to a stop position common to each bottle holding means 21.

The bottle holding means 21 receives and holds the outer bottle material 1b1 in the diagonal postures shown in FIGS. 3 to 8 and 10 by means of bottle holding members 23 installed on the vertical rotation shaft 22 and extending from all sides. The axis of the burner 13 directed toward the tip tube 2 abutting portion of the outer bottle material 1b1 is on the same vertical axis as the axis of the tip tube 2. Although a known spring force is used to hold the outer bottle material 1b1, illustration and explanation thereof will be omitted.

Burner 13 and tip tube 2 of outer bottle material 1b1
Rotation about the axis of the rotary shaft 22 is achieved by belt transmission to a driven pulley 24 attached to the lower end of the rotary shaft 22 (FIG. 12).

The bottle holding means 21 is equipped with a tip fitting means 30 as shown in FIG.
It is moved intermittently by The tip tube applying means 30 includes an elevating shaft 31 that is vertically passed through the rotating shaft 22 of the bottle holding means 21 so as to be vertically movable, and a tip tube attached to the protruding end of the elevating shaft 31 onto the rotating shaft 22. The vertical groove 33 of the lifting shaft 31 fits with the pin 34 on the rotating shaft 22, so that the lifting shaft 31 can be rotated as a unit and has a vertical movement range, especially a downward movement, with respect to the bottle holding means 21. The tip tube 2, whose position is regulated and is received in the tip tube holder 32, is applied to a predetermined position on the outer bottle material 1b1 by elastic engagement between the annular groove 35 on the outer periphery of the lower end and the click stopper 36 held on the rotating shaft 22 side. It is designed to be elastically locked in the height position.

The annular groove 35 has a slight play in the vertical direction with respect to the click stopper 36, and allows the elevating shaft 31 to be raised about 3 mm further from the height position at which the tip tube is applied, so that it can be applied to the bottom of the outer bottle material 1b1. This allows the tip tube 2 to be pushed into the bottom of the outer bottle material 1b1. In addition, a passage 37 is formed in the lifting shaft 31 for both blowing and falling of broken chip tubes, and this passage 37 is always kept half open.
A slide shutter 38 that is fully opened manually or automatically as necessary to ensure that the damaged tip tube falls.
is provided.

The stop positions due to the intermittent movement of the bottle holding means 21 and the tip tube applying means 30 are from the first stop position S1 to the 16th stop position S16 shown in FIG. 9, and vary depending on the number of steps and processing method. Designed to.

At the first stop position S1, the tip tube holder 32 is in the downward movement position and receives the insertion of the vacuum tip tube 2, but the push-up member 39 (the second 13
The flange 31a is moved upward by the cylinder etc. shown in the figure).
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,
The bottle holding means 21 receives the outer bottle material 1b1,
Predetermined locations of the outer bottle material 1b1 of the tip tube 2 are brought into contact with each other.

Further, at the final stop position S16, the outer bottle material 1b1, which has undergone the tip tube attachment process, is taken out from the bottle holding means 21. For these operations, the rotational drive of the bottle holding means 21 relative to the rotating shaft 22 is stopped at each stop position S1, S2, S16.

A large number of gas supply connection ports 50 are provided around the outside from the third stop position S3 to the fifteenth stop position S15, and except in specific cases, the burner for heating adjustment to the bottom of the outer bottle material 1b1 is At the same time, the bottle holding means 21 is rotationally driven.

Also, from the fourth stop position S4 to the thirteenth stop position S13
At each stop position up to, a burner 13, which is inserted into the outer bottle material 1b1 held by the holding means 21 and moved intermittently up to a predetermined position, is provided in connection with a lifting means 51 such as an air cylinder. Material 1b
The outer bottle material 1b1 is inserted each time the outer bottle material 1b1 advances and stops, and is removed before the outer bottle material 1b1 starts to be moved to the next stop position.
Local heating of the tip tube 2 abutting portion at the bottom of the bottle can be performed without intermittent movement of the outer bottle material 1b1.

The height of the burner 13 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 outer bottle material 1b1. On the other hand, the outer bottle material 1 from the eighth stop position S8 to the tenth stop position S10
The burner 13, which performs local sintering heating on the bottom of b1, perforation thereof, and melting the edge of the hole 15 and the chip tube 2, starts from a position where the tip of the flame reaches the locally heated part of the outer bottle material 1b1. The height is set to heat.

At the ninth stop position S9, where the tip tube 2 abutting portion of the outer bottle material 1b1 reaches a molten state or a state close to it by the local baking heating, a tip tube slight push-up member 52 shown in FIG. 14 is placed. but,
It is provided facing the flange 31a of the lifting shaft 31, and by operating a cylinder or the like, the lifting shaft 31 is slightly pushed up by about 3 mm, and the tip tube 2 that is in contact with the outer bottle material 1b1 is lifted up from the outer bottle material 1b1. It is pushed into the bottom, thereby ensuring that the gap S between the tip tube 2 and the portion of the outer bottle material 1b1 to which it is applied is eliminated.

At the next tenth stop position S10, a blow shaft 53 as shown in FIG. 15 is provided facing the lower end of the lifting shaft 31, and is moved upward by a cylinder or the like and connected to the lower end of the lifting shaft 31. The outer bottle material 1b1 is passed through the lifting shaft 31, the tip tube holder 32, and the tip tube 2.
The part of the tip tube 2 which is locally heated and melted is blown out, and the hole is made by blowing it out.

At the eleventh stop position S11, a bifurcated pusher 54 for the tip tube 2, as seen in FIGS. 10 and 11, is provided so as to face the tip tube posture regulation guide 55 on the bottle holding means 21. ,
The tip tube 2 welded to the outer bottle material 1b1 on the bottle holding means 21 that has reached the stop position S11 is pushed against the guide 55 by operating a cylinder or the like while the welded portion is in a softened state. Correct the bottle to a predetermined posture, that is, a vertical posture with the bottle in its normal position.

During this posture correction, there is a tendency for the thickness of the welded portion on the side where the tip tube 2 is pushed to become considerably large. However, in reality, at the time of correcting the posture, the welded part of the tip tube 2 is slightly stretched due to its own weight.
Since the tip can be bent to correct the posture while being stretched, there is no need for the above concerns, and if necessary, it is sufficient to provide a time lag for the tip tube to stretch by a predetermined amount. If having this time lag is not desirable in terms of work efficiency, a means for forcibly stretching the tip tube 2 by a predetermined amount may be provided.

Burner 1 installed at this 11th stop position S11
3 is timely connected to an air supply source to air-cool the state in which the edge of the hole 15 formed by the above-mentioned drilling of the outer bottle material 1b1 and the upper end of the tip tube 2 are fused together as shown in FIG. 7, and the state in which the tip tube 2 is attached is is obtained in the posture correction state. Further, a push-down roller 56 as shown in FIG. 12 is provided at the stop position S11, and when it is moved downward by a cylinder or the like, the lifting shaft 31 is moved downward via the flange 31a, and the outer bottle material is moved downward. The tip tube holder 32 is pulled downward from the tip tube 2 attached to the bottom of the tip tube 1b1 so as not to interfere with the posture correction of the tip tube 2.

At the 12th and 13th stop positions S12 and 13, post-burning is performed by burners 13 and 14 as shown in FIG. 8, and at the 14th and 15th stop positions S14 and S1,
In No. 5, after-burning is performed by the burner 14. The outer bottle material 1b1 from which thermal strain has been removed by the post-baking process is manually or automatically removed from the bottle holding means 21 at the 16th stop position S16.

Note that 57 indicates a hand-held operation box, and 58 indicates a control panel. In addition, oxygen is forcibly supplied to the heating by the burner 13 to help burn the fuel gas in the outer bottle material 1b1. Fuel gas and oxygen are also supplied to the burner 13 through the connection port 50.

Furthermore, the direction of rotation of the outer bottle material 1b1 must be kept constant. For example, at the eleventh stop position S11, the positioning portion 5 provided on the outer periphery of the lower end of the rotating shaft 31
A stopper 60 is applied to the bottle holding means 2.
1 in a predetermined direction.

(Effects of the Invention) According to the first invention of the present application, the vacuum tip tube welded to the bottle bottom is applied to a predetermined point set on the outer periphery of the bottle bottom on a straight line passing through the narrow bottle mouth. Therefore, the vacuum chip tube can be applied from a direction that is on the normal line of the outer peripheral surface of the bottle bottom or from a direction where it is easy to weld to the bottle bottom without creating a gap between it and the outer peripheral surface of the bottle bottom. The tube fitting part is heated from inside the bottle toward the vacuum chip tube in the axial direction of the vacuum chip tube by the heating means that enters from the linear direction through the bottle mouth, and heats both sides while applying heated melting of the bottom of the bottle to the vacuum chip tube. Welding can be carried out within the minimum required melting range, and even if the tube is rotated around the straight line, the heating means and the vacuum chip tube facing each other in this straight line will not get in the way, and will not interfere with the bottom of the bottle. Since the facing position and posture of the bottle do not change, the welding of the bottom of the narrow-mouth bottle and the vacuum tip tube at the predetermined point is automatically performed uniformly and reliably without the influence of the narrow-mouth or force. I can do it.

Furthermore, by swinging the welded vacuum tip tube around its welded base to the bottom of the bottle, a large movement of the tip can be obtained by a small angle change of the vacuum tip tube, and the bottle can be moved from the linear direction or an inclined position close to this. Since the vacuum tip tube is efficiently corrected in the direction parallel to the axis of the bottle, it is automatically oriented so that it does not come out from the side circumference of the bottle and the lowest part of the bottom when the vacuum tip tube is fused and closed during the vacuuming stage of the double bottle. It can be easily and reliably obtained through processing.

In addition, since the welding base, which is the center of the swing when correcting the posture of the vacuum tip tube, is set as the melted part of the minimum necessary range to the bottom of the bottle, the swing for correcting the posture of the vacuum tip tube can be controlled at the predetermined point. It is possible to carry out the process properly with a focus on the process, and even with automatic processing, it is difficult to cause variations in the corrected posture of the vacuum chip tube, and since no other unnecessary deformations are caused, both quality and yield are improved.

Therefore, to provide high-quality outer bottles for vacuum double-bottomed bottles, even if they are narrow-mouthed, without being limited by this, and with high work efficiency and high yield even through automatic processing. can significantly reduce costs.

According to the second invention of the present application, the method of the first invention of the present application can be automatically achieved by the operation of each means, and in particular, the perforation by heating and melting of the vacuum tip tube fitting portion of the bottle can be performed as described above. By blowing through a vacuum tip tube, it is possible to achieve a proper position and range that does not come off the weld without special blowing members or positioning, so quality and productivity can be further improved with a simple device. be able to.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the vacuum double bottle according to the present invention, FIG. 2 is a schematic diagram of an example of the entire manufacturing procedure, and FIGS. 3 to 8 are one example of the method of the present invention. Schematic side view and partially enlarged sectional view showing a procedure example, No. 9
The figure is a schematic plan view showing one embodiment of the device of the present invention.
Fig. 10 is a side view of the bottle holding means, Fig. 11 is a plan view of the tip tube posture correcting means, Fig. 12 is a longitudinal sectional view of the vacuum tip tube applying means,
FIG. 3 is a sectional view showing a pushing up member for tip tube fitting, FIG. 14 is a sectional view showing a tip tube minute pushing up member, and FIG. 15 is a sectional view of the blow shaft. 1...Vacuum double bottle, 1b...Outer bottle, 1b1
... Outer bottle material, 2 ... Chip tube, 13, 14 ...
Burner, 20...Turntable, 21...Bottle holding means, 30...Tip tube fitting means, 39
... Push-up member, 52 ... Chip tube minute push-up member,
53... Blow shaft, 54... Pusher, 55...
…guide.

Claims (1)

[Scope of Claims] 1. At a point on a straight line passing through the bottle mouth on the outer periphery of the bottom of an existing narrow-mouth bottle whose body diameter is approximately twice or more than the diameter of the bottle mouth, a Apply the vacuum chip tube from the direction closest to the
Next, the part of the bottom of the bottle where the vacuum tip tube is applied is overheated and melted using heating means inserted into the bottle from the linear direction through the bottle opening, and the vacuum tip tube is welded to this perforation. An outer bottle for a vacuum double bottle, characterized in that the vacuum tip tube is swung around the welded base to correct it from the linear direction or an inclined position close to it to a vertical position parallel to the axis of the bottle. Production method. 2. Bottle holding means for holding the bottle with the vacuum tip tube attachment part exposed on the outer surface of the bottom thereof, and a vacuum tip tube attachment part at the bottom of the bottle having the vacuum tip tube holding part and holding the vacuum tip tube to be held by the bottle holding means. a vacuum tip tube applying means that moves forward and backward in a direction normal to or close to the normal to a vacuum chip tube attachment portion at the bottom of the bottle between an advanced position applied to the bottle and a tip tube receiving position that is retreated from the advance position and receives the vacuum tip tube; heating means for locally heating the vacuum tip tube attachment part of the bottle held by the holding means from within the bottle; blowing means for blowing air through the vacuum tip tube fitting means for the bottle held by the bottle holding means and the vacuum tip tube held therein; The vacuum tip tube, which is melted and integrated with the hole edge of the perforated part formed by heating and melting the bottom of the bottle, is controlled to be pushed from one side while the melted and integrated part is in a softened state, and is pushed onto the peripheral wall of the bottle. 1. An outer bottle manufacturing device for vacuum double-bottomed bottles, characterized in that it is equipped with an attitude correction means for correcting the mounting attitude from an attitude inclined to the bottle axis to an attitude parallel to the bottle axis. 3. In the vacuum tip tube applying means, the advanced position is set in two stages: a position where it abuts against the outer surface of the bottom of the bottle, and a push-in position where it is further pushed into the bottom of the bottle from the abutting material. An apparatus for producing vacuum double-bottle bottles as described in Section 1.