JPS6230137B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mouth shaping device for a double bottle used for thermos bottles and the like. Conventionally, in the process of shaping a double bottle in which the mouth tips of an outer bottle and an inner bottle are welded together, the inner bottle is placed on a plurality of intervening pieces fixed to the inside surface of the curved bottom of the outer bottle. Therefore, when shaping the mouth of the bottle by heating the tip of the mouth and giving rotation to the double-bottomed bottle using a shaping mold, the shaping pressure will cause the inner and outer bottles to separate from each other. There were some inconveniences such as the center axis being misaligned or tilted.

The present invention was developed in consideration of the above-mentioned circumstances, and even if the tip of the mouth of a double bottle bottle becomes soft due to heating during shaping, it will never be affected by the shaping pressure of the shaping mold. , the mouth of an upright double bottle that can be fixed so that the center axes of the inner and outer bottles do not shift or tilt, and can be corrected if the axis lines shift or tilt. The purpose is to provide a plastic surgery device. The present invention will be described below with reference to drawings showing embodiments thereof.

In FIG. 4, the holding stand 1 has its bottle bottom holding part 1
The holder 1 is rotated by a rotating mechanism 2 such as a motor in the range of the central axis 19 of the circular opening of a, and the holder 1 includes a bottle side holder 1b and a bottle bottom holder that has become the circular opening. It has a section 1a. These two parts have a close relationship with each other with respect to the outer surface shape of the outer bottle 12, and when the outer circumference of the outer bottle 12 comes into contact with the entire surface of the bottle side holding part 1b and the bottle bottom holding part 1a, The outer bottle 12 has a central axis 19 of the circular opening.
It can be said that it stands upright.

However, with only these bottle side holding part 1b and bottle bottom holding part 1a, it is not possible to securely fix the outer bottle 12 under the action of shaping pressure, and the outer bottle 12 may tilt toward the side opposite to the bottle side holding part 1b. Since there is a risk of the holding table 1 falling down, please use appropriate means to
By energizing the bottle-side pressing body 3 supported by the bottle-side press body 3, the body of the outer bottle 12 is pressed and fixed to the bottle-side holding portion 1b. In the illustrated embodiment, the oscillating body 18 to which the bottle-side pressing body is fixed is attached by a spring 16 or the like so that it approaches the center axis 19 of the holder with a fulcrum 17 fixed to the holder 1 as an axis. It is strong. As shown in FIG. 1, in the holding stand 1, the bottle side holding body 1c is divided into a plurality of separate members, and a driven shaft 23 is attached to the bottle bottom holding part 1a having a circular opening.
Also, the hollow shaft 5 for sending pressurized air during mouth shaping may be integrated, and the shape of these structures is not limited to integral or separate parts, but depending on the embodiment, It can be changed as appropriate.

The holding stand 1 can be rotated around the axis 19 by the rotation mechanism 2 via the hollow shaft 5 and the rotary air valve 15 connected thereto. The double bottle can be rotated. Next, the central axis line 1
9, a vertically movable device 8 that moves up and down accurately in a known manner is moved along the central axis 19 by a partially spherical pressing protrusion 4 (a plurality of partially spherical pressing protrusions 4) on the lower surface of the pressing rotary body 10, which is suspended and held. ) to press the curved bottom portion of the inner bottle 13 downward from the inside, as shown in FIG. At least the lower portion of the pressing body 10 including the partially spherical pressing protrusion 4 is rotatable around the axis 19 by means of a bearing 7 or the like. Therefore, the welded mouth part 12a of the outer bottle 12 and the inner bottle 13 is heated to such an extent that the glass does not flow down again, and the mouth shaping tool 14 is applied to the welded mouth part 12a by an appropriate means. Even when performing mouth shaping, the shaping pressure may cause the mouth welded part 12a to come off and the rotation of the inner bottle 13 to stop.
The curved bottom part of the inner bottle 13 has a substantially uniform wall thickness without being tilted, and even when the part is removed or the inner bottle 13 is inserted at an angle from the beginning. Therefore, the partially spherical pressing protrusion 4 presses the curved bottom surface of the raised inner bottle 13 while rotating around the central axis 19, thereby making it possible to stand the inner bottle 13 upright.

Furthermore, due to this action, even if the position of the outer bottle 12 changes, the upright inner bottle 13 and the plurality of intervening pieces 2 fixed to the inner surface of the curved bottom part of the outer bottle 12
0 and the outer bottle 12 on the circumference line of the curved bottom surface of the outer bottle 12.
Due to the interaction with the bottle bottom holder 1a holding the bottle, the same acting force as when the inner bottle is upright acts on the outer bottle 12, and the bottle is urged with an appropriate pressure. Since the side pressing body 3 allows for some escape, the outer bottle 12 can also be stood upright.

In addition, in the embodiment shown in FIG.
4 is shown as an integrated body, but this may be replaced by a combination of a plurality of shaping rolls, etc. Also, the pressing rotary body 10 may be formed of bearings 7, etc., as shown in FIG. The rotation mechanism and the pressure adjustment spring 11 may be interchanged vertically, or may be integrated into one (not shown). It is also possible to have a structure in which the rotating disk 9 as shown in FIG. 3 is not provided, and the partially spherical pressing protrusion 4 is attached directly to the rod-shaped portion of the pressing rotating body 10. Further, the pressing rotary body 10 may be moved up and down directly by a vertically movable mechanism (not shown) such as an air cylinder without using the vertically movable device 8. In addition, by setting correction limits for the center axis deviation and inclination of the outer bottle 12 and inner bottle 13, and detecting this with a detection sensor, etc. (not shown), accidents can be prevented and defective products can be detected. It is also possible to easily perform the proper distribution.

As is clear from the above description, according to the mouth shaping device for an erect double bottle according to the present invention, the degree of perfection in mouth shaping is high and there is little distortion, so durability against various external forces is improved. In addition, the mouth shaping can be performed in an upright position in the same manner as the previous process, which has many advantages, such as simplifying and speeding up the manufacturing process and drastically reducing the number of defective products.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the invention,
Figure 1 is a side sectional view of the mouth shaping device, Figure 2 is the first
FIG. 3 is an enlarged side sectional view of a main part showing a state in which a double bottle is pressed by a pressing rotating body, and FIG. 4 is a side sectional view showing an embodiment of another aspect of the present invention. 1... Holding stand, 1a... Bottle bottom holding part, 1b...
Bottle side holding part, 1c...Bottle side holding body, 2...Rotating mechanism, 3...Bottle side pressing body, 4...Partially spherical pressing protrusion, 5...Hollow shaft, 6...Gadai, 7... ...bearing, 8...vertical movable device, 9...rotating plate, 10...
...Press rotating body, 11...Spring, 12...Outer bottle, 12a...Bottle inner and outer mouth welded parts, 13...Inner bottle, 14...Mouth shaping tool, 15...Rotary air valve, 16...Spring , 17... fulcrum,
18... Rocking body, 19... Center axis line, 20... Intervening piece, 21... Chip, 22... Vacuum operation pipe, 23... Driven shaft.

Claims (1)

[Claims] 1. A holding stand having a bottle bottom holding part and a bottle side holding part;
a rotation mechanism for rotating the holding base around a central axis; a rotation mechanism that is movable up and down along an upward extension of the central axis; and a plurality of partially spherical pressing protrusions on a lower surface; A pressing rotary body whose lower part including a protrusion is rotatable around the axis, and a shaping tool for shaping the mouth of an upright double bottle held by the holding stand, the rotation mechanism, and the pressing rotary body. A mouth shaping device for an erect double bottle, comprising: