JPH03265526A - Bottle making machine - Google Patents

Abstract

PURPOSE:To optionally and easily adjust the speed, stop position and force by driving every part by a pulse motor. CONSTITUTION:A specified pulse signal is inputted to a pulse motor 1A, hence the motor 1A is driven counterclockwise in the direction of the arrow A, the output shaft 3A and gear 4A are rotated in the same direction, and a screw shaft 5A is rotated clockwise through a gear 7A meshed with the gear 4A to raise a plunger through a ball nut 8A and a rod 9A. A specified pulse signal is then inputted to a pulse motor 14 to rotate the output shaft counterclockwise, a pinion 17 is rotated in the same direction to move a rack 18 upward, and a pinion 20 is rotated in the direction of the arrow B to rotated an inverted arm 22 toward a finishing die. The pulse motor 17 is then driven in the specified direction to rotate the inverted arm 22 from the rough finishing die side to the finishing did side through a shaft 24, a timing belt 27 and a gear 25.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bottle making machine for producing, for example, glass bottles.

[Conventional technology]

The Is type bottle making machine is widely used in the manufacture of bottles, and is configured as shown in FIGS. , rotational drive of the invert arm 44 that transfers the parison formed in the rough mold 41 to the finishing mold 43 , driving of the link arms 45 and 46 that open and close the rough mold 41 and the finishing mold 43 respectively, and the take-out device 47 Each of the tong arms 48 is rotatably driven by an air cylinder 49.50.51.52.
It is carried out by 53.

[Problem to be solved by the invention]

By the way, the general characteristics of air cylinder drives are: ■ It is not possible to stop the operation at a predetermined position during the stroke, ■ It is troublesome to adjust the length of the stroke (generally done using a stopper), ■ The speed cannot be adjusted freely (only the average speed over the entire stroke and the cushioning near the top dead center and bottom dead center can be adjusted); There are disadvantages such as the inability to adjust independently.

In order to overcome these disadvantages and inconveniences, conventional IS bottle making machines have adopted a very complicated mechanism.

For example, the vertical movement of the plunger 42 in the rough mold 41 is different between BB (blow/plow molding) and PB (press/blow molding) because the movement of the plunger 42 is different (from BB to PB or PB). When changing the mold from BB to BB, it was necessary to replace many parts installed at the top of the air cylinder 49, and this replacement required a great deal of labor and time. Due to necessity, it is necessary to stop the plunger 42 at three appropriate positions: the highest position, the lowest position, and an intermediate position between these true positions. In order to achieve this, it is necessary to use special spacers and adapters.
Replacement required a great deal of effort and time. Furthermore, the force for raising the plunger 42 has an important effect on the quality of the manufactured bottles, but as long as it is driven by an air cylinder, the lifting speed and lifting force are correlated, so these should be could not be adjusted independently.

Although the plunger 42 in the rough mold 41 is not driven up and down, the invert arm 44 is rotated, the link arms 45 and 46 are driven to open and close the rough mold 41 and the finishing mold 43, and the take-out device 47 is driven.
There was also a limit to adjustment in the rotational drive of the tong arm 48 due to the air cylinder drive. especially,
In the rotational drive of the invert arm 44, since the invert speed has a significant effect on the rotation of the bottle, a mechanism that can control this speed is desired.

The present invention has been made with the above-mentioned considerations in mind, and its purpose is to arbitrarily and easily perform stroke adjustment, speed adjustment, stop position adjustment, force adjustment, etc. in driving each of the above-mentioned parts. Our objective is to provide a bottle making machine that can produce high-quality bottles.

[Means to solve the problem]

In order to achieve the above object, the bottle making machine according to the present invention has the following features:
Driving the plunger up and down in the rough mold, rotating the invert arm that transfers the parison formed in the rough mold to the finishing mold, driving the link arm that opens and closes the rough mold and finishing mold, and rotating the tong arm in the take-out device. The feature is that each drive is performed by a pulse motor.

[Effect]

According to the present invention, speed adjustment, stop position adjustment, force adjustment, etc. in driving each part of a bottle making machine can be arbitrarily and easily performed, and therefore, high quality bottles can be manufactured.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First, Fig. 1 shows an example of the plunger vertical drive mechanism in the prototype. In this figure, IA and 1B are mounted with pulse motors (for example, manufactured by NSK Corporation) mounted on the base 2 so as to overlap each other. The Mega Torque Motor (trade name) is designed so that its rotation is controlled independently of each other by pulse signals from a control device (not shown).

And output shaft 3A of each pulse motor IA, IB,
3B (output shaft 3B is not shown), gears 4^, 4B are fixed to the ends of each, and one pulse motor I
The output shaft 3A of A is connected to the other pulse motor IB and gear 4.
It is provided so as to penetrate through B.

5A and 5B are threaded shafts (for example, right-handed screws) that are mounted upright on the lower end side so as to be held by bearings 6A and 6B provided on the base 2;
It has gears 7A and 7B that mesh with gears A and 4B, respectively. 8A and 8B are ball nuts provided to be screwed into the screw shafts 5A and 5B, respectively, and above each pole nut 8A and 8B is a hollow rod (this rod corresponds to the piston rod in a conventional air cylinder). 9A and 9B are fixed. and,
At the upper ends of the rods 9A and 9B are threaded portions 104 for detachably mounting a plunger (not shown) (this plunger is the same as a conventional plunger). IOB is formed. Also,
The ball nuts 8A and 8B are held by a rotation prevention device (not shown) so that the rods 9^ and 9B do not rotate but only move up and down within the mutually separated chambers 11A and 11B of the plunger housing 11 for the double gob. . In addition, 12A and 12B are rods 9A and 9B.
The holes 13A and 13B are bushes for inserting the holes, respectively.

In the plunge vertical drive mechanism having the above configuration, a predetermined pulse signal is inputted from a control device (not shown) to one of the pulse motors I to move the pulse motor 18 counterclockwise when viewed from the direction of arrow A. When the output shaft 3A and gear 4A are rotated in the same direction, the output shaft 3A and gear 4A also rotate in the same direction. When the gear 7^ meshing with the gear 4A rotates clockwise, the screw shaft 5A rotates in the same direction, and the rod 9A rises together with the ball nut 8A screwed onto the screw shaft 5A. A plunger (not shown) attached to 9A rises.

In order to lower the raised plunger, a predetermined pulse signal may be input to one of the pulse motors IA to rotate the pulse motor IA clockwise.

It goes without saying that the other rod 9B can be moved up and down in the same manner as the rod 9^.

As understood from the above explanation, the rods 9A, 9B (
Since the vertical movement of the plunger (plunger) is performed by the pulse motors IA and IB, the stroke adjustment, speed adjustment, and stop position adjustment of the rods 9A and 9B, as well as the force applied to the rods 9A and 9B (the output of the pulse motors IA and IB) Since the torque of the shafts 3A and 3B can be finely and arbitrarily adjusted, the work of replacing the rough mold becomes easy, and switching between PB and BB can be performed freely. It becomes possible to cope with the increased rotation of the bottle making machine, and also improves the quality of the bottles by eliminating press wrinkles and the like.

FIG. 2 shows an example of a rotational drive mechanism of an invert arm that transfers the parison formed in the rough mold to the finishing mold, and in this figure, 14 is the pulse motor IA, I.
Like B, it is a pulse motor whose rotation is controlled by pulse signals from a control device (not shown), and is attached to the frame 15 via a bracket 16. 17 is a pinion fixed to the output shaft (not shown) of the pulse motor 14. A rack 18 is held so as to move up and down along a guide member 19 attached to the frame 15, and includes rack teeth 18A that mesh with the pinion 17 on the lower side, and rack teeth 18 that mesh with the pinion 20 on the upper side.
It has B. An invert arm 22 (this invert arm 22 is the same as the conventional one) is fixed to the shaft 21 to which the pinion 20 is fixed. Note that 23 is a finished bracket. In addition, in FIG. 2, the right side is the original mold side, and the left side is the finished mold side.

In the rotational drive mechanism for the invert arm 22 configured as described above, when a predetermined pulse signal is inputted to the pulse motor 14 from a control device (not shown) to rotate the output shaft of the pulse motor 14 counterclockwise, the pinion 17 rotates in the same direction, and the rack 18 moves upward.

As a result, the upper pinion 20 rotates in the direction of arrow B, and the invert arm 22 is rotationally driven toward the finishing mold side as shown in the figure.

It goes without saying that in order to rotate the invert arm 22 in the illustrated position toward the rough side, the output shaft of the pulse motor 14 may be rotated clockwise.

FIG. 3 shows another configuration example of the rotational drive mechanism of the invert arm, and in this embodiment, the invert arm 22
A timing belt 27 connects a gear 25 provided on a shaft 24 to which the pulse motor 14 is fixed and a gear 26 fixed to the output shaft (not shown) of the pulse motor 14. By rotating in the direction of
The invert arm 22 can be rotated from the original mold side (left side in the figure) to the finished mold side (right side in the figure) or vice versa.

In both cases shown in FIGS. 2 and 3 above, the configuration of the rotational drive mechanism of the invert arm 14 is simplified, and
The invert speed can now be controlled arbitrarily,
In addition to improving the thickness of the bottle, it has become possible to prevent defects such as cracks from forming at the mouth of the bottle.

Although not shown, a pulse motor can be used to drive the link arms that open and close the rough mold and the finishing mold, respectively, and to rotate the tong arm in the take-out device.

For example, in the rough mold and finishing mold, Fig. 4 (B)
Rotating shaft 45A of link arms 45 and 46 in
It is only necessary to directly connect the output shaft of the pulse motor to each of the 46A.In this way, the above-mentioned problems caused by air cylinder drive can be solved, and the air cylinders were not installed at the bottom of the machine in the past. However, by using the pulse motor described above, this problem was overcome.

In addition, in the conventional takeout device, as shown in Fig. 4 (A
), the rack 5 is moved by the air cylinder 53.
Although the tongue arm 48 was rotated by moving the tong arm 48 up and down and rotating the drive gear 55, instead of this, the drive gear 55 may be directly rotated by a pulse motor. In this way, the rotational speed and stop position of the tong arm 48 can be finely adjusted, and the rotation of the tong arm 48 and the opening and closing of the tongs 56 can be adjusted independently of each other. It is possible to prevent defects such as cracks from occurring at the mouth.

〔Effect of the invention〕

As explained above, in the present invention, the mechanism that was driven by an air cylinder is now driven by a pulse motor, so that the following effects are achieved.

■ The structure of the drive mechanism has become simpler. This is particularly effective in the vertical drive mechanism of the plunger.

■ Speed and position can be controlled finely and arbitrarily.
I can now sing.

■ No more variations in stopping position or speed.

■ Model change has become easier. This is particularly effective in the vertical drive mechanism of the plunger.

■ Switching between PB and BB can now be done easily. This is particularly effective in the vertical drive mechanism of the plunger.

■ Piping for air and lubricating oil is no longer required, and drainage measures are no longer required.

(2) According to the present invention, the bottle making machine can be operated at high speed, and high quality bottles can be mass produced.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a diagram showing an example of a vertical drive mechanism for a plunger, FIG. 2 is a diagram showing an example of a rotational drive mechanism for an invert arm, and FIG. The figure is a diagram showing another example of the configuration of the rotational drive mechanism of the invert arm. FIG. 4 is a diagram showing the configuration of a conventional bottle making machine. IA, IB, 14...pulse motor, 22...
invert arm. Figure 1 Applicant Yamamura Glass Co., Ltd. Representative Patent Attorney Hideo Fujimoto 1 to 1B...Pulse 122 Figure 14 Pulse smoke 22 Inha I arm Figure

Claims (1)

[Claims] Driving the plunger up and down in the rough mold, rotating the invert arm that transfers the parison formed in the rough mold to the finishing mold, driving the link arm that opens and closes the rough mold and finishing mold, and rotating the tong arm in the take-out device. A bottle making machine characterized in that each of the following is performed by a pulse motor.