JPH0764569B2 - Glass gob distributor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass gob distributor for a bottle making machine or the like, and more particularly to a scoop operating mechanism.

[0002]

2. Description of the Related Art Generally, a glass forming apparatus such as a bottle making machine is provided with a plurality of feeders for feeding a glass gob and a plurality of orifices of the feeder for receiving and shaping the gob. An arc-shaped scoop that has a mold and receives the gob is disposed below the feeder, and by rotating the scoop by a predetermined angle, the fixed chutes of the radially arranged sections are connected to the feeder, and the gob is moved. A distributor that distributes and distributes to each section in a predetermined order is provided.

By the way, as a conventional mechanism for swinging the scoop of the gob distributor, a gear is provided on the outer circumference of the rotation holding portion of the scoop, and a lever swingable by a servomotor is connected to a rack meshing with the gear. Has been done.

However, in such a case, an error occurs due to the severe wear of the gear and the rack, an error is likely to occur in the swing angle of the scoop, and there is a problem that durability is insufficient.

Further, one end of a lever is attached to the rotation holding portion of each scoop, and the other end of the lever is pivotally attached to an operating rod reciprocated by a servo motor, and the lever is intervened by the reciprocation of the operating rod. It has also been proposed to rotate each scoop.

However, in such a device, there is a problem that the swing angle of the scoop is limited due to the interference between the levers.

On the other hand, as described above, in a gob distributor which sequentially supplies two or three gobs to a plurality of molds in each section by using an oscillating scoop, as shown in FIG. Since the pitch x and the mold pitch y of each section do not match, the lines l ₁ and l ₂ connecting each orifice and the center of the corresponding mold are not parallel to each other. Therefore,
As described above, in the one in which the scoop is oscillated by the lever through the lever, when each scoop is oscillated by θ from the mold of one section to the mold direction of the other section, the two-dot chain line in FIG. As indicated by L ₂ , the axis of at least one scoop will deviate from the corresponding mold.

Therefore, in order to absorb this deviation, an angle is conventionally formed between the fixed gutter and the scoop whose one end is disposed above each mold. In this case, when the gob falls while sliding on the scoop and the fixed gutter, the gob meanders to the left and right, which hinders stable supply of the gob.

Further, in this type of apparatus, when the molding machine is stopped during a power failure, it is necessary to temporarily drop the gob sent from the feeder directly to a predetermined location. Therefore, during a power failure, the distributor body is rotated by a predetermined angle. However, in this case, if a power failure occurs when each scoop is facing in a certain direction, the scoop may collide with a mechanical part when the distributor body rotates and damage the scoop or the like. There are some problems.

In view of the above points, the present invention has an object to obtain a glass gob distributor in which the above problems do not occur.

[0011]

DISCLOSURE OF THE INVENTION The present invention relates to a glass gob distributor for distributing a gob sent from a feeder to a predetermined fixed chute by rotating a plurality of scoops. The invention is characterized in that driven gears are provided on the outer circumferences, respectively, and tips of levers mounted on idle gears meshing with the driven gears are pivotally attached to operating rods reciprocated by a servomotor.

A second aspect of the present invention is characterized in that the idle gear is composed of two gears that are coaxially overlapped with each other, and that the idle gear is relatively adjustable in the circumferential direction.

Further, the third and fourth inventions are characterized in that the length of each lever or the tooth number ratio between the idle gear and the driven gear is changed.

Further, a fifth aspect of the invention is that one end of the operating rod is
The present invention is characterized in that an air cylinder for pushing and moving the operating rod in the axial direction at the time of power failure is provided, and a retractor cylinder for turning the distributor main body at a predetermined angle around the vertical axis is provided.

[0015]

When the operating rod is reciprocated by the servomotor, the idle gear rotates in the forward and reverse rotation directions via the lever, the driven gear rotates accordingly, and the scoop swings left and right. The glass gobs are distributed. When the idle gear is composed of two gears, the backlash between the driven gear and the driven gear can be released by adjusting both gears in the circumferential direction. Furthermore, in the third and fourth aspects of the invention, the scoops are swung at different angles to prevent deviation from the axis connecting the orifice and the mold. In the fifth aspect of the invention, when a power failure occurs, the air cylinder operates and the operating rod is pushed and moved in the axial direction. Therefore, each scoop is swung to a predetermined position, then the retractor cylinder is operated, the distributor is rotated, and the glass gob is temporarily dropped to a predetermined position.

[0016]

1 and 2 are a perspective view and a side view of a glass gob distributor according to the present invention, in which a bottom plate 3 of a distributor main body is attached to a base 2 fixed on a base 1 by a vertical axis. It is mounted so that it can be swung around 4.

A speed reducer 5 is provided on one side of the bottom plate 3.
Is mounted, and an electric servomotor 6 is linked to the speed reducer 5 in an interlocking manner. Further, a drive lever 7 that is swung by the electric servomotor 6 via the speed reducer 5 is connected to the speed reducer 5. The drive lever 7 is connected to the drive lever 7.
The tip end of is attached to the operating rod 8.

On the other hand, a gear case 9 is integrally mounted on the other side of the bottom plate 3. In the gear case 9, as shown in FIGS. 3 and 4, two driven gears 1 are provided at the front part thereof.
0 and 11 are rotatably mounted, and each driven gear 1
Idle gears 12 and 13 are meshed with 0 and 11, respectively. The rotating shafts 14 and 15 of the idle gears 12 and 13 project upward from the gear case 9, and the rotating shafts 14 and 15 have levers 16 and 17 respectively.
Is fixed, and the tip ends of the levers 16 and 17 are pivotally attached to the operating rod 8. In this case, the lever 16 is shorter than the lever 17 as shown in FIG.
The tip of the lever 16 is attached to a pin inserted in a slit 8a orthogonal to the longitudinal axis of the operating rod 8, and the tip of the other lever 17 is pivotally attached to the operating rod 8 on the side opposite to the idle gear 12 side. Has been done.

By the way, each driven gear 10, 11 is shown in FIG.
As shown in FIG. 1, each is formed on the outer circumference of a tubular member 18 rotatably mounted on the gear case 9 about its axis, and the gutter-shaped scoop 1 is formed at the lower end of each tubular member 18.
The upper ends of 9 are connected. That is, the above scoop 1
A driven gear is provided on the outer circumference of the rotation holding portion 9. Further, a gob distribution cylinder 20 communicating with the scoop 19 is inserted through the center of each tubular member 18 in which the driven gears 10 and 11 are formed.

On the other hand, the idle gears 12 and 13 are both formed by two gears 21a and 21b which are concentrically overlapped with each other.
a and 21b are relatively adjustable in the circumferential direction. Then, by rotating and adjusting the two gears 21a and 21b in the circumferential direction relative to each other, the driven gears 10 and 11 can be adjusted.
It is possible to eliminate backlash in the meshing part with.

Further, the tip of the piston rod 21a of the retractor cylinder 21 is connected to the bottom plate 3 of the distributor main body, and on the same axis as the operating rod 8, as shown in FIG. There is provided an air cylinder 22 for pressing and moving the operating rod 8 to move the scoop 19 in a predetermined direction.

When the electric servomotor 6 is driven, the drive lever 7 is oscillated by the speed reducer 5, and the oscillating movement of the drive lever 7 causes the operating rod 8 to reciprocate in the axial direction. . Therefore, the levers 16 and 17 are swung around the axes of the rotary shafts 14 and 15 of the idle gears 12 and 13, and the swinging causes the idle gears 12 and 13,
Also, the driven gears 10 and 11 are rotated accordingly, and the scoop 19 is swung left and right. In this case, since the lever 16 is shorter than the other lever 17, the scoop 19 swung by the lever 16 via the idle gear 12 and the driven gear 10 is swung by an angle larger than the other scoop. Therefore, by appropriately selecting the lever ratio, one scoop is swung to, for example, the position shown by the dotted line in FIG. 6, and deviation from the axis connecting the orifice and the mold is prevented.

In this way, the gobs dropped from the feeder are sequentially distributed by the scoop 19 to the fixed chutes of each of the plurality of sections and are supplied to each molding section.

On the other hand, if a power failure occurs due to some accident during the molding operation, the air cylinder 22 operates and the piston rod 22a pushes and moves the operating rod 8 in the axial direction. Therefore, each scoop 19 is swung in the arrow direction in FIG. 1 via the levers 16 and 17, the idle gears 12 and 13, and the driven gears 10 and 11. When each scoop 19 is swung to a predetermined position in this way, the retractor cylinder 21 is actuated, the distributor body is swung about the shaft 4 via the piston rod 21a, and the tip of the scoop 19 is moved to each section. It is moved to a position off the fixed chute position. Therefore, it is possible to directly drop the gob falling on the scoop 19 to a predetermined position without supplying it to the molding portion of each section in which the operation is stopped.

Although the length of the lever, that is, the lever ratio is changed in the above embodiment, the same effect can be obtained by changing the tooth ratio of each idle gear and driven gear. it can.

[0026]

As described above, according to the present invention, the lever is swung by the reciprocating motion of the operating rod, and the swivel of the lever causes the driven gear provided on the rotation holding portion of the scoop via the idle gear. Since I tried to activate
The swing angle of the scoop can be increased without causing interference between the levers. Moreover, the deflection angle of each scoop can be changed by changing the lever length ratio or the gear ratio between the idle gear and the driven gear as required, and the feeder pitch of the feeder and the pitch between the molds can be changed. Regardless of the difference, each scoop and the fixed gutter can be positioned in the same straight line, and the meandering of the gob during the flow can be prevented. Furthermore, when the idle gear is relatively adjustable in the circumferential direction, backlash between the idle gear and the driven gear can be eliminated,
It is possible to reliably prevent an error in swing angle. Further, by providing a cylinder device that moves the operating rod in one direction at the time of power failure, when the power failure occurs, each scoop at an unspecified position can be always rotated to a predetermined position, and then the distributor body can be rotated. It is possible to prevent each scoop from colliding with a mechanical part at the time of its rotation and causing damage such as a scoop.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a glass gob distributor of the present invention.

FIG. 2 is a side view of the glass gob distributor of the present invention.

FIG. 3 is a partial cross-sectional plan view of a scoop drive mechanism section.

FIG. 4 is a vertical cross-sectional view showing a portion related to a driven gear and an idle gear.

FIG. 5 is a plan view showing the outline of the glass gob distributor of the present invention.

FIG. 6 is an explanatory view of a scoop operation of a conventional glass gob distributor.

[Explanation of symbols]

 3 Bottom plate of distributor body 4 Vertical shaft 5 Speed reducer 6 Servo motor 7 Drive lever 8 Actuating rod 10, 11 Driven gear 12, 13 Idle gear 16, 17 Lever 19 Scoop 21 Retractor cylinder 22 Air cylinder

Claims (5)

[Claims] 1. A glass gob distributor for distributing a gob supplied from a plurality of orifices to a predetermined mold by rotating a plurality of scoops, and a driven gear is provided on the outer periphery of a rotation holding portion of each scoop. At the same time, a glass gob distributor characterized in that the tip of a lever attached to an idle gear that meshes with each driven gear is pivotally attached to an operating rod reciprocated by a servomotor. 2. The glass gob distributor according to claim 1, wherein the idle gear is composed of two gears that are coaxially overlapped with each other and is adjustable in the circumferential direction. 3. The length of the lever mounted on each idle gear is configured to be different from each other according to the difference in the pitch between the orifice pitch and the mold. Glass gob distributor. 4. The tooth number ratio between each idle gear and the driven gear is
The glass gob distributor according to claim 1, wherein the glass gob distributors are different from each other in response to a difference in pitch between the orifice pitch and the mold. 5. An air cylinder for pressing and moving the operating rod in the axial direction at the time of a power failure, and a retractor cylinder for rotating the distributor body around a vertical axis by a predetermined angle are provided at one end of the operating rod. The glass gob distributor according to claim 1, which is characterized in that.