JPH022814B2 - - Google Patents

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to press and blow-type glass product forming machines, and particularly relates to a rotary table that rotates around a central vertical axis, and The present invention relates to a glass product forming machine having a plurality of individual forming units mounted on a glass product forming machine.

(Problems to be Solved by the Prior Art and the Invention) Generally, this type of glass product forming machine has a rotary table that rotates around a central vertical axis, as described in Japanese Patent Application Laid-Open No. 57-71827, for example. A plurality of molding units are installed in the circumferential direction of the molding unit, and as the rotary table rotates, gobs of molten glass are sequentially supplied to the molding units, and a press device produces an intermediate product. The intermediate product is then placed in a finishing mold and a bottom mold while holding the upper part of the intermediate product with a neck ring device, and the product is molded by blowing compressed air with an air blow head. During the process, the finishing mold and bottom mold are opened, and the product is taken out of the machine using a take-out device.

By the way, in such a glass product forming machine, the upper part of the press-formed intermediate product is gripped by a neck ring device and transferred from the rough mold to the finishing mold, and the intermediate product is rotated inside the finishing mold. Thus, the molding is performed while applying relative rotational motion between the product and the finishing mold. In this case, in order to improve the gloss on the surface of the glass product and reduce the friction and wear on the inner surface of the finished mold,
It is desirable to select the optimal neck ring rotation speed depending on the size and type of product.

However, in conventional molding machines, a large bevel gear is fixed on the outer periphery of the fixed drum of the molding machine body.
The large bevel gear is meshed with a neck ring gear in the individual molding unit, so that the neck ring gear is rotated by the movement of the individual molding unit which rotates with the rotation of the vertical rotary table. Therefore, the rotation speed of the neck ring gear is determined by the rotation speed of the individual molding units, and there are problems such as the impossibility of appropriately selecting the desired neck ring rotation speed.

In view of these points, it is an object of the present invention to provide a glass product forming machine in which the number of rotations of the neck ring can be arbitrarily selected and the number of rotations of the neck ring can be set to the optimum number depending on the size of the product.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a glass product molding machine having a molding machine body having a vertical rotary table that rotates around a central vertical axis, and a plurality of individual molding units attached to the vertical rotary table. The invention is characterized in that the rotational speed of the neckling device within the individual molding unit can be arbitrarily adjusted.

(Function) The rotation speed of the neck ring device can be selected and adjusted to the optimum rotation speed according to changes in product size, type, etc., and product quality can be improved.

(Example) FIG. 1 is a longitudinal cross-sectional view of a glass product forming machine according to the present invention. A cam drum 4 is arranged and fixed to the upper part via a cylindrical intermediate stand 3 concentrically with the lower stand 2.

A lower rotary table 5 is disposed on the outer periphery of the lower stand 2 so as to be concentric with the lower stand 2. The lower rotary table 5 is supported via a bearing 7 on a lower frame 6 fixed on the base 1.
A gear part 8 provided on the outside of the lower part of the table is meshed with a drive gear (not shown), and rotation of the drive gear causes the lower rotary table 5 to be rotated through the gear part 8.
is adapted to rotate around the lower stand 2.

Further, above the cam drum 4, a bearing 11 is mounted on a central vertical shaft 10 protruding from the cam drum 4.
An upper rotary table 12 is rotatably mounted via the upper rotary table 12.

On the other hand, a predetermined number of individual molded units 13 are arranged at a predetermined interval in the circumferential direction of the rotary table on the outer periphery of the lower rotary table 5 and the upper rotary table 12, and the lower part of each individual molded unit 13 is and the upper part are fixed to the lower rotary table 5 and the upper rotary table 12, respectively, so that each individual molding unit 13 rotates about the axis of the central vertical shaft 10 together with the upper and lower rotary tables 5 and 12. .

Further, a gob delivery device 14 is disposed at a predetermined position outside the main body of the molding machine including the individual molding units 13, etc., and delivers gobs to the rough molds of the individual molding units 13 at regular intervals in synchronization with the rotational speed of the molding machine. supply to.

While the individual molding unit receiving the gob rotates in a predetermined direction together with the upper and lower rotary tables 12 and 5, it is pressed by a press device to form an intermediate product, and then necked by a neckling device. Blow molding is performed by blowing compressed air through the finishing mold, bottom mold, and air blow head while holding the mold. In the final step, the finishing mold and the bottom mold are opened, and the product is taken out of the machine by a take-out device provided on the outside of the molding machine main body.

By the way, the lower rotary table 5 and the upper rotary table 12 of the molding machine main body are different from the upper rotary table 1.
The protrusion 12a (Fig. 2) formed on the lower surface of the lower rotary table 5 and the upper inner circumference of the lower rotary table 5 are fitted together during machining and fixed concentrically. The outer peripheral surfaces of both rotary tables 5 and 12 are polygonal surfaces 5b and 12b (18-sided in this embodiment).
Further, positioning keys 15 and 16 of the individual molded units are simultaneously processed on each polygonal surface. In addition, the above 18-sided index is processed by a high-precision NC machine, and both rotary tables 5 and 12 are
When assembling, the axes of both rotary tables are perfectly aligned and a high level of horizontality is maintained, and the polygonal surfaces of both the upper and lower rotary tables are completely parallel.

2 and 3 show the individual molding unit 13.
FIG. 2 is an enlarged side view and a front view of the individual molding unit, in which the lower part of the main frame 20 of the individually molded unit is fixed to a predetermined polygonal surface 5b of the lower rotary table 5 via a positioning key 15. On the other hand, the main frame 2
A valve block 21 is mounted on the upper part of the valve block 21 on the surface facing the upper rotary table 12, and the upper part of the valve block 21 is positioned on a predetermined polygonal surface 12b of the upper rotary table 5 via a positioning key 16. fixed in position.

The valve block 21 is provided with operating valves (not shown) that are operated by contacting a plurality of cams 22 mounted on the outer periphery of the cam drum 4, and actuate the cylinders of each device, which will be described later. The fluid is switched. Further, the valve block 21 has a
When the valve block is mounted on the upper rotary table 12, a plurality of working fluid introduction connection ports 24 are provided, each of which corresponds to each working fluid supply port 23 provided on the valve block mounting surface of the upper rotary table 12. The connection portion thereof is prevented from leaking fluid by an O-ring or the like, and each working fluid introduction connection port 24 is connected to the above-mentioned operating valve.

On the other hand, a piston rod 25 is fixed to the upper half of the main frame 20 and extends vertically on the side opposite to the valve block 21, and the piston rod 25 can only move up and down along the piston rod 25. A press cylinder 26 is attached, and a press head 27 extending downward is attached to the outside of the press cylinder 26.

Further, another piston rod 28 parallel to the piston rod 25 is fixed to the lower half of the main frame 20.
is equipped with a rough cylinder 29 that can move up and down along the piston rod 28 and can rotate, and a rough mold 31 is removably attached to an arm 30 that projects laterally from the rough cylinder 29. ing.
On the other hand, a cam groove 33 that engages with a cam roller 32 abutted from the main frame 20 is provided on the side surface of the rough cylinder 29.
According to the vertical movement of the cylinder 9, the rough cylinder 29 can rotate approximately 90 degrees about its axis by the engagement of the cam roller 32 and the cam groove 33. When the rough mold cylinder 29 reaches the highest position, the axis of the rough mold 31 is aligned with the axis of the press head 27.

Further, a bracket 36 for attaching a finishing die, etc. is fixed to one side of the intermediate portion of the main frame 20, and at the top of the tip of the bracket 36, one of left and right finishing die holders 37, 37 having a semicircular cross section is attached. The sides are pivoted, and the left and right finishing mold holders 37,
37 meet to form a finishing die, the center line of the finishing die being aligned with the axis of the press head 27 (FIGS. 4 and 5).

One end of finishing die holder opening/closing links 38, 38 is pivotally attached to the vicinity of the pivot joint of both finishing die holders 37, 37, and the other end of the finishing die holder opening/closing link 38, 38 is The lever 40 is pivotally connected to the distal end of a lever 40 whose base end is fixed to a shaft 39 mounted on a bracket 36. The base end of a lever 41 is also fixed to the lower end of the shaft 39, and the tip of the lever 41 is connected to the tip of a piston rod 43 of an operating cylinder 42 whose base end is connected to the main frame 20. On the other hand, a segment gear 44 is fixed to the shaft 39, and the segment gear 44 is meshed with a bevel gear 46 fixed to the horizontal shaft 45. Sealing bottom type holder 4
7 base is attached (see Figure 3).

Further, a neckling device support frame 51 is attached to the main frame 20, which supports the lower end of the piston rod 25 of the press cylinder 26 and the upper end of the piston rod 28 of the rough cylinder 29, and also supports the neckling device 50. (Figure 6).

The neckling device support frame 51 includes:
An opening 52 is formed concentrically with the press head 27, and a cylindrical plunger guide 53 is disposed within the opening 52 (FIG. 8).
The plunger guide 53 is attached to a neck ring gear 54 at a portion not shown, and is configured to guide a press plunger that descends from above during pressing. Furthermore, a concentric recess 53a is provided at the lower part of the plunger guide 53 for gripping the moil portion of the glass product. In the lower part of the plunger guide 53,
Between the pressing process of the gob and the blow forming with the finishing mold, claws 55 divided into four on the circumference are provided to grip the moil portion together with the recess 53a, and each claw 55 is connected to the neck ring gear. 54 by a pin 56, and are urged toward the center by a spring 58 provided on the outer periphery of the neck ring holder 57. Further, a neck ring presser 59 is disposed above the neck ring holder 57, and when the neck ring presser 59 is lowered, its inclined surface 59a and the upper part of the neck ring holder 57 engage to resist the spring 58. Then, the lower part of the neck ring holder 57 moves outward, opening the claws 55 and releasing the moil portion of the glass product from the gripped state.

By the way, the neck ring gear 54 is rotatably mounted on the neck ring device support frame 51 via a ball bearing 60, and the neck ring gear 54 is meshed with a drive pinion 61 (FIG. 6).

The pinion 61 is connected to a shaft 62 and a clutch 63.
is interlocked and connected to the chain wheel 64 via
Furthermore, the chain wheel 64 is a bevel gear 6.
5. The bevel gear 65 is connected to the intermediate stand 3 of the molding machine main body.
It is meshed with a large bevel gear 66 that is rotatably provided on the outer periphery of the shaft concentrically through a bearing. On the other hand, an electric motor 80 whose rotation speed can be adjusted is provided in the intermediate stand 3 of the molding machine main body, and a speed reducer 81 is connected to the electric motor 80.
Pinion 8 provided on the output shaft of the speed reducer 81
2 is meshed with an external gear 83 formed integrally with the large bevel gear 66 (FIG. 1). When the electric motor 80 is driven at a predetermined rotation speed, the reducer 81, pinion 82 and The large bevel gear 66 rotates about the central vertical axis via the external gear 83, and the bevel gear 65 is rotated in conjunction with the movement of the individual molding unit 13, which rotates with the rotation of the vertical rotary table. The neck ring gear 54 is rotated via the clutch 63, pinion 61, etc.

On the other hand, there is a bracket 6 on the back side of the main frame 20.
A lever 69 has a cam follower 68 attached to the cam drum 4 at one end, and the center portion of the lever 69 is pivoted to the bracket 67, and the other end of the lever 69 is attached to the link 7.
0 to the clutch switching lever 71.

Further, the neck ring presser 59 has a pin 72.
The neck ring presser holding lever 73 is connected to a lever 75 which has a cam follower 74 at one end that abuts a cam attached to the cam drum 4. .

On the other hand, the main frame 20 has a blow head 7 for blowing compressed air into the intermediate product.
6 is mounted so as to be swingable about a vertical axis. The base end of the blow head 76 is connected to a link 77.
A cam follower 79 is provided at the other end of the swing lever 78, and the cam follower 79 is in contact with a cam attached to the cam drum 4 (not shown). There is.

By the way, as mentioned above, the blow head 76 is swung around the vertical axis via the swiveling lever 78 and the like, and is moved from the upper outer position of the finishing mold to a position that coincides with the center position of the finishing mold, where it is moved as shown in the figure. It is moved downward by a device that closes the upper opening of the finishing mold.

When one individual molding unit 13 rotates together with the upper and lower rotary tables 5 and 12 to a position corresponding to the gob delivery device 14, a predetermined amount of gobs is supplied to the rough mold 31 of the individual molding unit 13. be done. When the gob is fed and the individual molding unit 13 comes to a position where it has rotated a predetermined amount, the operating valve of the valve block 21 is operated by a predetermined cam 22a or 22b of the cam drum 4, and the rough mold is formed. Cylinder 29 is moved upward.
Therefore, the engagement of the cam groove 33 provided on the side surface of the rough cylinder 29 with the cam roller 32 protruding from the main frame 20 causes the rough cylinder 29 to rotate approximately 90 degrees around the axis. is,
It is aligned with the axis of the press head 27 and the plunger guide 53 of the neck ring device.
located directly below.

Then, another operating valve of the valve block 21 is operated by another fixed cam 22, the press cylinder 26 is driven, the press head 27 is lowered, and the gob in the rough mold 31 is formed under pressure.

When the pressure forming is completed in this way, the upper end outer circumference of the intermediate product formed by the pressure forming is aligned with the recess 53a of the plunger guide 53 and the claw 55.
The intermediate product is held between the two (FIG. 8).

Therefore, when the individual molding unit 13 further rotates, the press cylinder 26 is moved upward, and the rough mold 31 is moved downward via the rough mold cylinder 29 in preparation for supplying the next gob.
The actuating cylinder 42 is actuated, and the left and right finishing mold holders 37, 37 are moved to the position 2 in FIG.
The mold is moved from the dotted line position to the solid line position, and the finished mold is formed by both of them and surrounds the intermediate product. At the same time, segment gear 4
4, etc., the bottom mold holder 47 is rotated around the horizontal shaft 45, and the bottom of the finishing mold is sealed.

When the intermediate product is held in the finishing mold in this way, the clutch switching lever 71 is actuated via the lever 69, etc., and the clutch 63 is actuated to switch the large bevel gear 66, bevel gear 65, pinion 61, etc. The neck ring gear 54 is rotated through the intermediate product, and the intermediate product is rotated in the finishing mold.

On the other hand, the blow head 76 is moved above the neck ring device via the cam follower 79, the swing lever 78, etc., and is also moved downward, and is brought into pressure contact with the upper surface of the plunger guide 53, and then compressed air is supplied via the blow head 76. It is blown into the intermediate product, and the finished product is finished by the finishing die.

When finishing of the product is completed in this manner, the blow head 76 is operated in the opposite manner to the above to return to the initial position.

In this way, when the individual molding unit 13 is rotated to a predetermined position, the finishing mold and the bottom mold are opened, contrary to the above, and the neck ring presser 59 is lowered via the lever 75 and the like. Therefore, the inclined surface 59 of the neck ring presser 59
a and the upper part of the neck ring holder 57 are engaged,
The lower part of the neck ring holder 57 moves outward against the spring 58, and the claws 55 open to release the grip on the glass product, and the take-out device disposed on the outside of the molding machine body releases the grip. The product is removed from the machine.

Once the product has been removed in this way,
The individual forming unit 13 is again moved to the gob supply position. Similarly, the above operations are performed in sequence in each individual molding unit to mold a glass product.

By the way, in the above molding machine, when changing each individual molding unit to another individual molding unit and changing the number of products or the dimensions of the products, the electric motor 8
The rotational speed of the neck ring device is adjusted as appropriate so that the rotational speed of the neckling device becomes the one most suitable for the changed product.

〔Effect of the invention〕

As explained above, the present invention makes it possible to arbitrarily adjust the rotation speed of the neck ring device in the individual molding unit, so that the rotation speed of the neck ring device can be optimized depending on the type and size of the product. can improve the surface gloss of glass products,
It is possible to reduce wear on the inner surface of the finishing mold, improve product quality, and extend the life of the finishing mold.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing a schematic configuration of the glass product forming machine of the present invention, FIG. 2 is a side view of the individual molding unit section, FIG. 3 is a front view of the same, and FIG. 4 is a plan view of the finishing mold section. 5 is a longitudinal sectional side view of the same as above, FIG. 6 is a plan view of the neck ring device section, FIG. 7 is a side view of the same as above, FIG. 8 is a partial vertical sectional view of the neck ring section, and FIG. 9 is an air blowing device. FIG. 1...Base, 2...Lower stand, 4...Cam drum, 5...Lower rotary table, 10...Central vertical shaft, 1
2... Upper rotary table, 13... Individually molded unit, 14... Gob delivery device, 20... Main frame, 21... Valve block, 22... Fixed cam, 2
6...Press cylinder, 27...Press head, 29
...Rough type cylinder, 31...Rough type, 33...Cam groove, 3
7... Finishing mold holder, 42... Operating cylinder, 47
...Bottom type holder, 50...Neckling device, 53
...Plunger guide, 54...Neckling gear,
66...Large bevel gear, 80...Electric motor, 81...Reducer, 83...External gear.

Claims (1)

[Scope of Claims] 1. In a glass product molding machine having a molding machine body having an upper and lower rotary table rotating around a central vertical axis and a plurality of individual molding units attached to the upper and lower rotary table, A glass product forming machine characterized in that the rotation speed of a neck ring device can be adjusted arbitrarily. 2 A large bevel gear for driving the neckling gear of the neckling device is disposed on the outer periphery of the fixed drum of the molding machine body so as to be rotatable about the central vertical axis, and the rotation speed is adjusted to the large bevel gear via a reduction gear device. 2. A glass product forming machine as claimed in claim 1, characterized in that two electric motors are interlocked.