JPS5850936B2 - spout forming equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming spouts on glass containers such as beakers and teapots.

As a means for forming a spout, an apparatus as shown in Japanese Utility Model Publication No. 49-371 has been proposed.

That is, as shown in FIG. 1, the lower end of the spout fitting 10 is rotatably attached to a shaft 30 inserted into a glass container 20 to serve as a fulcrum 11, and the upper end 12 is swung to be heated. This is to push open the softened portion 21 from the inside to the outside.

However, according to this device, since both the swing fulcrum holding part 13 of the molding fitting 10 and the fixture 40 of the glass container are inserted inside, it is difficult to process a small-diameter container, and a part of the fixture 40 is 41 rests on the mouth where the temperature is high, resulting in deformation.

Furthermore, the molding surface of the pouring spout tends to become warm and wrinkled, and the reason for this is clear when looking at the trajectory of the mold 10.

That is, in FIG. 2, when the pivot point of the mold 10 is at the illustrated fulcrum 11, the trajectory of the pivot point 12 is curved, and this trajectory is similar to the trajectory G of the edge of the spout 21. A vector F difference is generated between them, and a frictional force is generated between the wall surface and the mold 10, causing wrinkles on the spout molding surface.

In addition, when starting to form the spout, the inner wall of the opening end and the mold 10
Because the contact angle θ1 is large, the vector H
may be added and crushed.

Such a tendency increases as the formation angle θ2 becomes more acute.

The present invention aims to improve this point, and provides an apparatus for expanding a wall surface while pressing a spout mold whose upper part swings around the lower part as a center of rotation against the inner wall of the opening of a glass container. The swinging end located above the opening is connected via a lever to the rotating shaft of a crank connecting frame located outside the glass container and below the opening on the rotation center line of the mold.

According to the present invention, the holding part of the spout mold is located on the outside of the glass container via a lever, and only the mold and the pressing rod are inserted into the glass container, so that small diameter containers can be processed. is easy.

Furthermore, since the drive mechanism for the mold is all located outside the container, the coordinates of the center of rotation and the rotation angle can be set freely, so if the center of rotation is placed on the surface of the mold, the mold can be attached to the wall of the container. Because of the close hanging, it is possible to obtain a sharp spout formation as shown in FIG.

4 and 5 show a front view and a side view of the apparatus of the present invention, respectively, in which 50 is a glass container such as a beaker placed on a pedestal 60, and 70 is a glass container such as a beaker placed on a pedestal 60; It is a press rod that is fixed to the pedestal.

Reference numeral 80 denotes a spout molding die whose upper part 82 swings around a rotation center 81 of the lower part and bulges out the wall surface while pressing against the inner wall 51 of the opening.

90 has one end fixed to the swinging end 82 of the mold 80, and the other end fixed to the mold 8 outside the glass container 50 and below the opening.
Crank connection frame 112 placed on the rotation center line 83 of 0
This is a lever that is coupled to the rotating shaft 100 of the.

Reference numeral 110 indicates an air cylinder that rotates the rotary shaft 100 via a connection link 111, 112 a crank connection frame, 113 a connection pin, and 114 a holder.

Reference numeral 120 denotes a stopper that moves in the direction of arrow A or B as the screw 121 rotates, and regulates the rotation angle of the rotation shaft 100.

Reference numeral 130 denotes a bracket that holds each of the above-mentioned devices, and is slidably held on a holding plate 140 via an integrated slider 131.

The slider 131 is a guide rail 1 fixed to a holding plate 140.
41 slidably and screws 142 of the retaining plate 140.
The height position is adjusted by a handle 143.

A slider 144 is integrated with the holding plate 145 and engages with a rail 151 fixed to the base 150.

Reference numeral 152 indicates a screw that is screwed into the holding plate 145 to move it back and forth.

147, the movable end is connected to the holding plate 140, and the fixed end is connected to the holding plate 14.
5 and move the holding plate 140 up and down.

Reference numeral 146 indicates a rail fixed to the retaining plate 140 and slidably embraced by the retaining plate 145.

Incidentally, the pedestal 60 of the glass container 50 is fixed to a base 150, and the press rod 70 for fixing the glass container 50 is installed on the base 150 via a suitable adjustment means (not shown).

71 indicates a pressure spring. In the above-described configuration, first, the air cylinder 147 is operated to release the mold 80 and the press rod 7.
0 and place the glass container 50 on the pedestal 60.

Then, while heating the part that will form the spout with a gas flame or the like to the processing temperature, the press rod 70 is lowered to press the internal bottom surface to fix the glass container 50 in a predetermined position, and the mold 80 forms the spout. descend to the position corresponding to the part to be touched.

When the processing temperature is reached, the air cylinder 110 is quickly activated to rotate the rotary shaft 100 in the direction of arrow C in FIG. Swings around line 83,
The inner wall of the opening of the glass container 50 is pressed to bulge the wall surface to form a spout 51 (FIG. 3).

The formation position and angle θ of the spout 51 are adjusted in advance to predetermined values using three screw handles.

That is, the vertical position is set by the handle 143 of the screw 142, the horizontal position is set by the handle 153 of the screw 152, and the forming angle θ is set by the handle 1 of the screw 121.
22.

When the handle 122 is rotated, the screw 121 rotates, and the stopper 120, which is slidably held and screwed onto the guide rail 123, moves back and forth.

When the cylinder 110 operates and the rotary shaft 100 begins to rotate in the direction of arrow C (FIG. 5), it eventually comes into contact with the distal end cast collar 120 of the coupling link 111 and stops.

Therefore, the forming angle θ of the spout mold 80 is regulated by the position of the stopper 120 and set to a predetermined value.

According to the device of the present invention described above, the spout type 80 has its swing drive mechanism entirely outside the glass container 50, and has no support mechanism at the rotation center inserted into the glass container 50. Since the center of rotation 81 can be brought very close to the wall surface, and the coordinates of the center of rotation can be adjusted by the handles 143 and 153, it is possible to easily form a spout with an acute angle.

Furthermore, the present invention has an excellent practical use in that the means for fixing the glass container and the driving mechanism for swinging the pouring mold are provided separately and independently, so that uniform products can be mass-produced without deformation of the opening end of the container. It has the desired effect.

[Brief explanation of the drawing]

Partially cutaway side view showing the first spout forming device;
Figure 2 is a side view showing the spout forming state of the conventional device;
The figure is a side view showing the spout forming state of the molding apparatus of the present invention, FIG. 4 is a front view showing the configuration of the molding apparatus of the present invention, and FIG. 5 is a side view of the same. 50 is a glass container, 80 is a spout mold, 90 is a lever, 110 is an air cylinder, 112 is a crank connection frame, 120 is a stopper, 142 is a height adjustment screw, 152
is the horizontal position adjustment screw.

Claims (1)

[Claims] 1. In a device that presses a spout mold whose upper part swings around the lower part as a center of rotation against the inner wall of an opening of a glass container to bulge the wall surface, the mold has a swinging end located above the opening with a lever. A spout shaping device which is connected to a rotating shaft of a crank connecting frame which is disposed on the rotational center line of the mold outside the glass container and below the opening.