JPH04238821A - Paddy transfer apparatus of blow-molding machine for glass - Google Patents

Abstract

PURPOSE:To enable quick and accurate positioning of a paddy to a feeding position by reciprocating a suction arm with an oscillation cam mechanism and synchronously moving a suction head of an apparatus for supplying a paddy on a rotatable work table. CONSTITUTION:When a paddy pressed with a press head and a suction head 10 is sucked and held with the head 10 at the paddy-sucking position (b), an input shaft 37 of an oscillation cam mechanism 31 constituting a transfer apparatus B is rotated according to the rotation of a rotary table 13. A suction arm 10a is turned in horizontal plane and the tip head 10 is forwarded, synchronous to the motion of a blow head 16', toward a paddy-feeding position (a) along the moving direction of the prescribed blow head 16' of the work table moving on the table 13 and located in concentric state. At the same time, the sucking action of the head 10 is stopped and the paddy is dropped on a prescribed orifice plate on the work table. The head is turned in horizontal plane and returned to the position (b).

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy transfer device for a gas blow molding machine.

0002

BACKGROUND OF THE INVENTION A blow-and-blow method is known as a means for forming hollow glass products such as bulbs for thermos bottles and bulbs for light bulbs (see, for example, Japanese Patent Publication No. 49-14122). Hereinafter, a conventional example of a glass blow molding machine for hollow glass products will be explained based on FIGS. 6 to 15.

As shown in FIG. 6, glass (2) melted in a furnace is guided to a feeder (1) and extruded into an orifice (5) by a plunger (3) that moves up and down. This glass (2) is sheared by a shear blade (6) to form a hot glass lump of a predetermined volume, i.e. a gob (7).
). The gob (7) slides on the chute (8) and is set on the press head (9).

When the gob (7) is set on the press head (9), as shown in FIG. 7, the press head (9) rises and the suction head (10) and press head (9)
), the gob (7) is pressed into a disc-shaped pressed gob, ie, a padi (7a).

The paddy (7a) is supplied onto the work table by the paddy transfer device (A) at the paddy supply position (a). That is, the paddy (7a) is held by suction on the suction head (10) of the paddy transfer device (A),
As shown in FIG. 8, it is transferred onto the work table (11) by horizontal rotation of the suction arm (10a) about the axis (10b).

[0006] The suction head (10) is
) on the work table (11) is completed, the negative pressure suction is stopped. As a result, Paddy (7a)
is set at a predetermined position on the work table (11) as shown in FIG.

The padi (7a) in a semi-molten state is shown in FIG.
As shown in 0, it hangs down from the hole of the orifice plate (12) provided on the work table (11) by its own weight,
At the same time, the blow head (16) equipped with the supply pipe (16a) for primary blow air and secondary blow air
It comes down from above 7a).

The work table (11) starts rotating, and blowing air for primary forming is blown from the blow head (16) into the paddy (7a), which has been deformed due to sagging due to its own weight, as shown in FIG. , parison (7b
) begins to be molded.

When the molding of the parison (7b) is completed, as shown in FIG.
a) (17b) begins to close.

As shown in FIG. 13, a molding die (17a
) (17b) is completely closed, the parison (7b) is discharged from the air supply pipe (16a) of the blow head (16).
) blowing air for secondary molding is blown into the mold, and a hollow glass product such as a bulb (7c) is molded while the work table (11) rotates around the center of rotation (O').

When the molding of the valve (7c) is completed, FIG.
4, the molding molds (17a) (17b) open left and right, and the blow head (16) rises.

The molded bulb (7c) is cut off from the moil (7e) at the upper surface of the orifice plate (12) by a disc cutter (18) as shown in FIG. A conveyor sends it toward the slow cooling furnace. Valve (7c)
The separated moil (7e) is collected as cullet and reused.

In FIG. 6, (14) is a support cylinder that supports the blow head (16) and the work table (11), and this support cylinder (14) rotates around the central axis (O). They are provided at equidistant positions around the circumference of the rotary table (13) to be driven.

By the way, the conventional paddy transfer device (A) is driven by a drive mechanism shown in FIGS. 16 and 17. That is, the drive cylinder (19) consisting of an air cylinder is
They are installed at predetermined positions around the rotating rotary table (13). The cylinder tube (2) of the drive cylinder (19)
0), a piston (21) is slidably accommodated in the piston (21), and a piston rod (22) attached to the piston (21) is made to protrude outward from the upper part of the cylinder tube (20). An elevating body (23) is directly slidably fixed to the upper end of the piston rod (22) of the drive cylinder (19), and this elevating body (23)
A guide hole (25) having a plurality of spline grooves (24) spirally formed on the inner peripheral surface is bored in the upper end surface of the guide hole (25). The shaft (10b) of the suction arm (10a) is connected to the member (26).
), and the spline shaft portion (27) formed at the lower end of the shaft (10b) is rotatably inserted into the guide hole (25) of the elevating body (23), and the spline shaft portion ( A plurality of spline protrusions (28) spirally formed on the outer circumferential surface of the elevating body (23)
5) into the spline groove (24) so as to be slidable. Further, a stopper (16) is provided on the upper surface of the suction head (10) that comes into contact with the blow head (16) installed on the work table (11) when the suction arm (10a) horizontally rotates.
29) is installed protrudingly. When the cylinder rod (22) of the drive cylinder (19) moves into the protruding body, the spline protrusion (28) of the spline shaft portion (27) of the suction arm (10a) moves into the spline groove (22) of the elevating body (23).
4), the suction arm (10a) horizontally rotates, and the stopper (29) of the suction head (10) rotates when feeding the paddy (7a) to the work table (11). The suction head (10) moves horizontally in a direction opposite to the direction of movement of the blow head (16) so as to come into contact with a predetermined blow head (16) of the work table (11).

[0015] When the paddy (7a) press-formed by the press head (9) and the suction head (10) is supplied to the work table (11), the cylinder rod protruding above the drive cylinder (19) is used. (22) enters and leaves. Then, the elevating body (23) and suction arm (1
Since the shaft (10b) of 0a) is fitted with a helical spline, the suction arm (10a) is connected to the shaft (10b).
The suction head (10), which rotates horizontally around and holds the paddy (7a) under suction, moves at a predetermined angle in the direction opposite to the direction in which the blow head (16) of the work table (11) moves, as shown in FIG. As shown by the two-dot chain line in FIG. 16, a predetermined blow head (16
) and the stopper (29) on the top of the suction head (10).
) collides with This collision between the blow head (16) and the suction head (10) causes the suction head (
10) is moved and positioned in synchronism with the blow head (16) to the paddy supply position (a), as shown by the dashed line in FIG. 16, and the paddy (7a) is supplied.

[0016]

Problems to be Solved by the Invention In order to improve productivity when forming hollow glass products using the blow-and-blow method shown in FIGS.
), and it is necessary to increase the rotational speed of the suction arm (10a). However, according to the conventional Paddy transfer device (A), the suction head (10
) to the paddy supply position (a), the blow head (16) collides with the stopper (29) of the suction head (10), so the suction arm (10a
) increases the rotation speed, the greater the impact upon this collision. As a result, the suction head (10) vibrates due to the impact and lacks stability, making it difficult to accurately position the suction head (10) at the paddy supply position (a), and the blow air supply pipe (16a) breaking. There is a risk of

Furthermore, since a drive cylinder (19) and a helical spline mechanism are used as the means for reciprocating the suction head (10), there is a restriction in increasing the speed in this respect as well.

The present invention was proposed in view of the above-mentioned problems, and it is an object of the present invention to provide a paddy transfer device for a glass forming machine that can accurately position the suction head to the paddy supply position on the work table at high speed. The purpose is

[0019]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a glass blow molding machine which has blow heads at equally spaced positions on the circumference and supplies paddies onto a rotatably installed work table. In this Paddy transfer device, an input shaft that is rotatably driven toward the outside of a housing with a built-in oscillating cam mechanism is protruded and held, and an input shaft that is rotated in a certain direction is placed above the housing via the oscillating cam mechanism. Equipped with a suction arm that horizontally reciprocates at a predetermined angle, the tip of the suction arm can hold paddy by suction, and when supplying paddy to the work table,
A suction head is provided that moves synchronously from the paddy suction position in the same direction as the working table.

[0020]

[Operation] When the input shaft protruding outside the housing rotates in a certain direction, the suction arm, which has a suction head at its tip, horizontally reciprocates through the oscillating cam mechanism. When supplying paddy to the work table, the suction head, which holds the paddy by suction, moves horizontally and synchronously from the paddy suction position at the backward end in the direction of movement of the blow head on the work table, due to the horizontal rotation of the suction arm, to the forward end. is positioned at the paddy supply position, and supplies the paddy to the work table in this state. Thereafter, the suction head horizontally moves back and back from the paddy supply position at the forward end in a direction opposite to the direction of movement of the blow head, temporarily stops at the backward end, and sucks and holds the paddy while at this stop.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to FIGS. 1 to 5. Components that are the same as those shown in FIGS. 6 to 17 are denoted by the same reference numerals, and description thereof will be omitted.

In FIGS. 1 to 4, (B) shows a press-formed paddy (7a) working in cooperation with the press head (9), and the press-formed paddy (7a) is placed in a predetermined orifice plate (11) of the work table (11) at the paddy supply position (a). 12) This transfer device (B) is for feeding onto the rotary table (1
3) is installed at a predetermined position around the housing (
30) has an oscillating cam mechanism (31) built therein.

The oscillating cam mechanism (31) is shown in FIG.
As shown in , the index cam (32) and the roller (34
), and a support shaft (36) that is reciprocated by the rotation arm (35). The index cam (32) has a housing (
An input shaft (37) is rotatably supported in a horizontal position within the housing (30) and continuously driven in a fixed direction by an appropriate drive mechanism, and projects to the outside of the housing (30). Above cam groove (
33) is formed endlessly on the outer peripheral surface of the index cam (32) so as to form a cam curve as shown in FIG.

The rotating arm (35) has its base end fixed to the lower end of the support shaft (36).
The support tube (38) is installed upright on the upper wall of the housing (30).
), it is rotatably supported in an upright position. At the tip of the rotating arm (35), a roller (34) is attached to a long hole (
39), and this roller (
34) is engaged with the cam groove (33) of the index cam (32). Further, the base end portion of the suction arm (10a) of the suction head (10) is attached and fixed in a horizontal position to the upper end of the support shaft (36).

The operation of the oscillating cam mechanism (31) is such that the continuous rotational movement of the input shaft (37) in a fixed direction is caused by the cam groove (33) of the index cam (32) and the cam groove (33) of the index cam (32).
33) via a roller (34).
35), the suction arm (10a) of the suction head (10) is connected between the paddy suction position (b) and the paddy supply position (a) in FIG.
It is configured to convert into reciprocating rotational motion at the timing shown in FIG. That is, the index cam (
When the roller (34) linearly reciprocates along the cam groove (33) due to the rotation of the suction arm (10a)
The suction head (10) at the tip of the press head (
9) installed at the Paddy suction position (b) and the work table (
It horizontally reciprocates between the paddy supply position (a) of 11) and the timing shown in FIG. The press head (16) moves forward, stops at the paddy supply position (a) and is positioned above the orifice plate (12) concentrically with the blow head (16), and returns to the paddy suction position (b). 9) so as to stay concentrically above it.

Next, the operation of the present invention will be explained as follows. Note that while the suction head (10) remains above the press head (9) at the paddy suction position (b), the press head (9) shown in FIG. 6 rises and presses the gob (7). It is assumed that the padi (7a) is suctioned.

The work table (11) is placed on a rotary table (13) that rotates in the direction of the arrow in FIG. On the other hand, a press head (9) and a suction head (10) coaxially parked above the press head (9)
Paddy (7a) was pressed by the suction head (
10), the input shaft (37) of the index cam (32) constituting the transfer device (B) is driven to rotate in conjunction with the rotation of the rotary table (13) by an appropriate drive mechanism. The index cam (32) rotates continuously in a fixed direction. Then, the roller (34) moves linearly in the axial direction along the cam groove (33) of the index cam (32) while being guided by the elongated hole (39) of the rotating arm (35). The linear movement causes the suction arm (10a) to rotate horizontally. By horizontally rotating the suction arm (10a), the suction arm (
The suction head (10) at the tip of the work table (11) is moving towards the padi supply position (a).
) in the direction of movement of a predetermined blow head (16') of the paddy suction position (b) in synchronization with this blow head (16').
) to the paddy supply position (a), move to the paddy supply position (a) while being substantially vertically aligned in front of the paddy supply position (a), and near this paddy supply position (a). Orifice plate (12) moves synchronously
is positioned concentrically with the blow head (16) above the blow head (16). When the suction head (10) is thus positioned at the paddy supply position (a), the suction head (10)
0) is stopped, and the paddy (7a) is dropped and supplied onto a predetermined orifice plate (12) on the work table (11).

After the suction head (10) passes the padi supply position (a), the suction arm (10a)
The horizontal rotation causes the paddy to return to its original suction position (b). That is, the continuous rotation of the index cam (32) in a certain direction causes the roller (34) to move around the rotating arm (3).
The cam groove (3) is guided by the elongated hole (39) at the tip of the cam groove (3).
3), the suction arm (10a) rotates back horizontally around the support shaft (36), and the suction head (10) moves in the direction opposite to the direction in which the blow head (16') moves. It moves backward and is positioned concentrically above the press head (9) at the paddy suction position (b) at the backward end, and the press head (9) rises to press the gob (7). The paddy (7a) is adsorbed and held, and the next supply is carried out. Repeat the same action below.

[0029]

According to the present invention, when supplying paddy to the work table, the suction head moves horizontally in the direction of movement of the work table in synchronization with the blow head, and then is positioned at the paddy supply position. Even when the suction head is horizontally reciprocated at high speed, the suction head can be accurately and stably positioned at the padi supply position. In addition, as the reciprocating rotation means of the suction arm, a mechanism is adopted that converts the rotational motion that continuously rotates in a fixed direction from the input shaft into reciprocating rotational motion via the oscillating cam mechanism, so it is easy to increase the speed. Moreover,
Unlike in the past, the suction head does not collide with the blow head, and damage to parts can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an embodiment of the device of the present invention.

FIG. 2 is a front view of the device of the present invention.

FIG. 3 is a perspective explanatory view schematically showing the apparatus of the present invention.

FIG. 4 is a perspective explanatory view schematically showing the internal structure of the device of the present invention.

FIG. 5 is an explanatory diagram showing the timing of horizontal reciprocating movement of the suction head.

6 to 15 are explanatory diagrams showing the operating sequence of the glass blow molding machine.

FIG. 16 is a schematic plan view showing a conventional paddy transfer device for a glass blow molding machine.

FIG. 17 is a vertical cross-sectional view schematically showing a conventional paddy transfer device.

[Explanation of symbols]

a Paddy supply position b Paddy suction position 7a Paddy 10 Suction arm 10a Suction head 11 Work table 16 Blow head 30 Housing 31 Oscillating cam mechanism 37 Input shaft

Claims (1)

[Claims] [Claim 1] A blow head is provided at equidistant positions on the circumference,
In a paddy transfer device for a glass blow molding machine that supplies paddies onto a rotatably installed work table, an input shaft that is rotatably driven toward the outside of a housing that incorporates an oscillating cam mechanism is protruded and held, and Equipped with a suction arm above that rotates horizontally by a predetermined angle via an oscillating cam mechanism when the input shaft rotates in a certain direction, and the tip of the suction arm can hold the paddy by suction, and can be attached to the work table. A paddy transfer device for a glass blow molding machine, characterized in that a suction head is provided that moves synchronously from a paddy suction position in the same direction as the advancing direction of a work table when supplying paddy.