JP2001019443A - Die opening/closing device for bottle making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die opening/closing device for a bottle making machine which allows the simple exchange of respective parts, such as link mechanisms, in case of the occurrence of wear in these parts, facilitates speed control and is excellent in the reproducibility thereof. SOLUTION: This die opening/closing device opens and closes halved dies 17 of the bottle making machine by holding the respective dies in a pair of opening/closing arms 51, interlocking turning shafts 55 via links 53 to each of a pair of the opening/closing arms 51, and turning the pair of the opening/ closing arms 51 by driving the respective turning shafts 55 by means of actuators. In such a case, the actuators are composed of servo motors 63A forming a pair with the turning shafts 55.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a rough mold for a bottle making machine,
The present invention relates to a mold opening and closing device such as a finishing die.

[0002]

2. Description of the Related Art In general, a bottle-making machine is provided with two molds, a rough mold for forming a parison and a finishing mold for finishing the parison.

FIG. 6 shows a rough type opening / closing mechanism. This opening / closing mechanism holds a half of a rough mold (die) 101 on a pair of opening / closing arms 103, and connects a rotating shaft 107 to each of the pair of opening / closing arms 103 via a lever 105. As shown in FIG. 7, each of the rotating shafts 107 is rotated by one of the air cylinders 109A, thereby rotating the pair of opening / closing arms 103 to open and close the mold 101. The other air cylinder 109B is a finishing die actuator, which opens and closes a finishing die (die) with a similar configuration. Air cylinder 109A for rough mold and air cylinder 10 for finish mold
The lever 111 is attached to the tip of the 9B piston rod 109a.
The shaft 113 is connected via the. A pair of levers 115 projecting to both sides are fixed to the shaft 113, and a link arm 119 is connected to the pair of levers 115 via a link 117. The rotating shaft 107 described above is fixed to the link arm 119, and a pair of opening / closing arms 103 is connected to the shaft 113.

In the above configuration, the air cylinder 1 for the rough mold is used.
When the piston rod 109a of the cylinder 09A is extended, the respective mechanisms are displaced as indicated by arrows in FIGS. 6 and 7, the mold on the rough mold side is opened, and the piston rod 109a of the air cylinder 109B is extended. If so, each mechanism is also displaced in the direction of the arrow, and the mold on the finishing side is opened.

In this conventional configuration, there is a problem that, in an air cylinder, a link mechanism, or the like, each part is worn due to long-term use, and once worn, the mold opening / closing position is shifted. .

[0006] For example, even if the closing position of the mold is slightly shifted on the rough mold side, misalignment occurs with the plunger mechanism for parison molding, causing malfunction of the plunger mechanism. There is a problem that many bottle defects such as contamination of foreign matter due to dust and abrasion powder occur.

[0007]

In the conventional configuration, FIG.
As shown in the figure, a coarse air cylinder 109A and a finish air cylinder 109B are installed below,
For example, in the case of replacing a worn part, it is necessary to remove the support bracket 121 of the mold from the housing 123 and to put in a hand therefrom to replace the part, which is an extremely difficult operation. There's a problem.

The opening and closing of the mold is performed by an air cylinder 109.
In the conventional configuration, speed control must be performed by adjusting the flow rate of compressed air (for example, needle adjustment), and there is a problem that reproducibility is poor.

Further, in the conventional configuration, when the closing position of the mold (rough mold) is slightly shifted, a misalignment occurs with the plunger mechanism for parison molding, and when the opening and closing centering work is performed, This operation is performed by moving the plunger mechanism in the horizontal direction, etc., but this operation is very difficult.

Accordingly, an object of the present invention is to provide a mold for a bottle making machine which can easily perform component replacement, centering work, etc., and can easily control the speed of opening and closing the mold, and is excellent in its reproducibility. An object is to provide a switchgear.

[0011]

According to the first aspect of the present invention,
Each of the halves of the mold of the bottle making machine is held by a pair of opening / closing arms, and a rotating shaft is connected to each of the pair of opening / closing arms via a lever, and each rotating shaft is driven by an actuator. In a mold opening / closing device for opening and closing the mold by rotating a pair of opening / closing arms, the actuator is constituted by a servomotor paired with the rotating shaft.

According to a second aspect of the present invention, each of the halves of the mold of the bottle making machine is held by a pair of open / close arms, and a rotating shaft is connected to each of the pair of open / close arms via a lever. In a mold opening / closing device that drives each of the rotating shafts with an actuator and rotates the pair of opening / closing arms to open and close the mold, a supporting bracket that holds the pair of rotating shafts rotatably is provided. Each pivot axis penetrates vertically through the support bracket, the actuator is composed of a servomotor paired with the pivot axis, and this servomotor is suspended below the support bracket via a frame. The output shaft of the servomotor and the rotating shaft are connected via a connecting member.

In these inventions, since the actuator is constituted by the servomotor paired with the rotating shaft, the speed can be controlled, the reproducibility can be improved, and the position can be controlled. Therefore, the open / close position of the open / close arm can be adjusted by electrical control, and the centering operation can be easily performed.

Also, since the servomotor is suspended below the support bracket via a frame, for example, by lifting the servomotor, it is possible to easily access necessary parts. Can be.

[0015]

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

FIG. 1 shows a glass bottle forming machine. This glass bottle forming machine is supplied from a gob supply device 1 and guides a gob (glass lump) G cut by a shear 3 downward, an upper funnel 7, a gob deflector 8, a lower funnel 9, a scoop 11, a trolley 13, A deflector 15 and the like are provided. A rough mold 17 is arranged below the deflector 15, and the gob G guided to the rough mold 17 is
The parison P is formed by being pressed by a plunger (not shown).

The parison P formed by the rough mold 17 is
The mouth is gripped by the mouth mold 19, and the mouth 19 is rotated clockwise in the figure by the invert mechanism 21 to be inverted into the finishing mold 23. In the finishing die 23, a glass bottle 25 is formed by blow molding, and the glass bottle 25 is rocked and conveyed via a take-out mechanism 27, and is transferred onto a cooling dead plate 29.

Then, it is extruded from the dead plate 29, transferred onto the conveyor 31, and
It is sent to an annealing furnace not shown through 1.

FIGS. 2 to 5 show the opening / closing mechanism 50 of the rough mold 17. FIG. 2 shows a state in which the rough mold 17 is opened, and FIG.
7 indicates a closed state.

The opening / closing mechanism 50 is provided with a roughly-divided half mold 1.
7a and 17b are held by a pair of opening / closing arms 51, respectively.
And the rotating shaft 55 is connected thereto via the. A shaft 56 rotatably connects and supports the pair of opening / closing arms 51.

As shown in FIG. 4, each rotating shaft 55 is rotatably supported by one support bracket 57. The support bracket 57 includes a bottom portion 57a and a pair of cylindrical portions 57b. Each of the rotating shafts 55 is rotatably fitted to the cylindrical portion 57b and penetrates the support bracket 57 vertically.

As shown in FIGS. 2 and 3, an opening / closing arm 51 is connected to the upper end of the rotating shaft 55 via a lever 53, and the lower end 55a of the rotating shaft 55 is connected to the lower end 55a as shown in FIG. Further, an output shaft 63a of a roughing type servomotor 63A with a speed reducer, which is paired with the rotation shaft 55, is connected via a drive link (connecting tool) 61 to each other.

The drive link (connecting tool) 61 is shown in FIG.
As shown in FIG. 4, the output shaft 63 of the servo motor 63A
a, a second link 82 connected to the lower end 55a of the rotating shaft 55, and a pin 83 connecting these. This drive link 61
Since the torque of the servo motor is transmitted by
The large torque of the servomotor can be sufficiently transmitted. Gears have disadvantages such as wear of the tooth surface and reduction in torque transmission and positional accuracy due to backlash and the like.

In the above configuration, the roughing type servomotors 63A paired with the respective rotating shafts 55 are arranged close to each other.
As shown in FIG. 4, it is suspended and fixed to the lower surface of the support bracket 57 via one frame 65. The opening / closing mechanism 50 for the rough mold 17 has been described above. The finish motor 23 for the rough mold 17 as shown in FIG.
The configuration is substantially the same using 3B.

In this embodiment, first, when a mechanism (a link mechanism or the like) is worn out, it is very easy to replace the component.

That is, since the servo motor forming a pair with the rotating shaft 55 is suspended and fixed to the lower surface of the support bracket 57, the support bracket 57 is lifted upward from the housing 91 as compared with the conventional one. Thus, all the parts including the link mechanism are lifted, so that the replacement of the parts is extremely easy.

Even if it is necessary to replace a large part, the entire support bracket 57 can be lifted up as it is, carried out of the housing 91, and then the parts including the servomotor 63 can be replaced. .

Second, since the actuator is constituted by a servomotor paired with the rotating shaft 55, speed control becomes possible and its reproducibility can be improved.

Further, since the actuator is constituted by a servomotor paired with the rotary shaft 55, the position can be controlled. Therefore, the open / close position of the open / close arm 51 can be easily adjusted by electric control. The centering operation can be easily performed.

Although the present invention has been described based on one embodiment, the present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the description has been made mainly on the rough mold, but it is apparent that the same can be applied to the finish mold.

[0032]

According to these inventions, since the actuator is constituted by a servomotor paired with the rotating shaft, the speed can be controlled, the reproducibility can be improved, and the position can be controlled. Therefore, the open / close position of the open / close arm can be adjusted by electrical control, and the centering operation can be easily performed.

Further, since the servo motor forming a pair with the rotating shaft is suspended below the support bracket via a frame, for example, by lifting it, a necessary part can be easily reached, so that the parts can be replaced. Can be performed very easily.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a glass bottle forming machine.

FIG. 2 is a view showing a rough mold opening / closing mechanism and showing a state in which the rough mold is opened.

FIG. 3 is a view illustrating a rough mold opening / closing mechanism, showing a state in which the rough mold is closed.

FIG. 4 is a view showing a mounted state of a pair of servo motors in a rough mold.

FIG. 5 is a diagram showing a mounted state of a rough type and a finish type servo motor.

FIG. 6 is a view showing a conventional rough opening / closing mechanism.

FIG. 7 is a view showing a state of attachment of a conventional air cylinder.

FIG. 8 is a view taken in the direction of an arrow X in FIG. 6;

[Explanation of symbols]

 Reference Signs List 17 coarse type 19 mouth type 23 finishing type 50 opening / closing mechanism 51 opening / closing arm 53 lever 55 rotation axis 57 support bracket 61 drive link (connecting tool) 63A rough type servo motor 63B finishing type servo motor

Claims (2)

[Claims] 1. A half of a mold of a bottle making machine is held by a pair of opening / closing arms, and a rotating shaft is connected to each of the pair of opening / closing arms via a lever, and each of the rotating shafts is rotated. A mold opening / closing device for driving a shaft by an actuator and rotating a pair of opening / closing arms to open / close the mold, wherein the actuator is constituted by a servomotor paired with the rotating shaft. Mold opening and closing device for bottle machines. 2. A method according to claim 1, wherein each of the halves of the mold is held by a pair of opening and closing arms, and a rotation shaft is connected to each of the pair of opening and closing arms via a lever. A mold opening / closing device that opens and closes the mold by rotating a pair of opening / closing arms by driving a shaft with an actuator, comprising: a support bracket that rotatably holds the pair of rotating shafts; The shaft penetrates the support bracket up and down, the actuator is constituted by a servomotor paired with the rotation shaft, and the servomotor is suspended below the support bracket via a frame. A mold opening / closing device for a bottle-making machine, wherein the rotating shaft is connected via a connecting tool.