JPH07314196A - Automatic molding machine for glass disk - Google Patents

Abstract

PURPOSE:To mold glass disks to stable dimensional accuracy and more particularly the glass to a stable thickness by automatically molding the glass disks for lubrication to be used at the time of producing a steel pipe with a hot extrusion press. CONSTITUTION:A bucket lifter 402 rises and kneaded matter is supplied and stored in a storage hopper 40 when the kneaded matter formed by kneading glass powder and a binder is put into this bucket lifter 402. The kneaded matter of the amt. adjusted by a screw is supplied from below the storage hopper 40 to a receiving conveyor 410 and is further sent to a charging conveyor 413. After the kneaded matter is metered by an automatic metering instrument 415, the kneaded matter is supplied to an injecting hopper 120. On the other hand, a rotary table 10 is rotated at every 60 deg. at the prescribed timing and the kneaded matter is injected from this injecting hopper into a lower mold 11 in the injecting position A and the front surface thereof is uniformly leveled off by a leveling-off plate 130 in a leveling-off position B. The kneaded matter is press molded by an upper mold 140 in a molding position C. The upper mold 140 and lower mold 11 with which the molding ends is cleaned by a sponge roller 420 contg. moisture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic molding machine for molding a glass disk for lubrication used in a hot extrusion press for pipe materials.

[0002]

2. Description of the Related Art When a steel pipe is manufactured by a hot extrusion press,
Although the billet is lubricated by the glass powder, sufficient adhesion cannot be achieved by simply adhering the glass powder to the inner and outer peripheral surfaces of the billet. Therefore, it is general to place a glass disk on the front surface of the billet and extrude it.

An automatic molding machine is generally used for manufacturing glass disks. For example, as shown in JP-A-52-27409 and JP-A-52-27409, lower molds are provided on a rotary table at equal angular intervals, the rotary table is intermittently driven, and glass powder and binder The kneaded material (hereinafter referred to simply as the kneaded material) is automatically weighed, poured into the lower mold and leveled, and the upper mold is fitted to this and pressure-molded, and the molded glass disk is moved upward from the lower mold. An automatic molding machine has been proposed and put into practical use in which an iron plate is set in the lower mold by extrusion.

As for the glass disk take-out machine, as shown in Japanese Utility Model Publication No. Sho 55-1684, there is a mechanism in which a glass disk that is molded and extruded from a lower mold is sent to the side with an air cylinder together with a floor plate. As for the floor board setting machine, as shown in Japanese Utility Model Publication No. 55-1685, a mechanism is proposed in which a floor board is magnetically attached and set in the lower mold.

[0005]

However, the automatic molding machine described in the conventional publication has room for improvement in that it is a completely automatic molding of glass disks. That is, due to the nature of the kneaded material in which glass powder is bonded with water glass, when injected into the lower mold, it may spill and stick to the mating surface of the lower mold,
There is a problem in that the contact between the mating surfaces of the upper and lower molds is obstructed, and the dimensional accuracy of the glass disk, particularly the disk thickness, is not stable.

Further, after the molded glass disk is pushed out of the lower mold and sent to the side, it is necessary for an operator to manually lift it and send it to the next firing step, and there is still a problem that the glass disk is easily broken. It was

In this situation, the present invention improves the apparatus described in the prior art publication, stabilizes the dimensional accuracy, and enables the molded glass disk to be automatically taken out and sent to the next step without relying on manpower. An object of the present invention is to provide an automatic glass disk molding machine.

[0008]

Therefore, in the automatic glass disk molding machine according to the present invention, at least five lower molds are provided on the rotary table at equal angular intervals, and the rotary table is intermittently driven to drive each of the five tables. An automatic glass disk molding machine that sequentially and automatically performs pouring, leveling, molding, demolding, and floor plate setting at a rotation stop position. A cleaning tool that is provided laterally to the molding position and extends laterally from a vertical swivel axis. Is swiveled around the vertical swivel axis, and the lower die mating surface (upper edge surface)
And a cleaner for slidingly contacting the lower surface of the upper mold to clean the upper mold and the lower mold simultaneously or individually.

Five lower molds may be provided depending on at least each stop position, but considering the cycle time of the rotary table, it is preferable to provide six lower molds every 60 °. The drive mechanism only needs to rotate the rotary plate by a predetermined angle, and for example, a combination of an angle indexer and a motor, a step motor, or the like can be used.

The kneaded material is injected into the lower mold by an injection machine provided above the injection position. The pouring hopper which can rotate and move up and down can be adopted for this pouring machine, but of course, other methods such as a pouring conveyor and a chute may be adopted. The operator may measure and supply the kneaded material to the pouring machine, but it is preferable to automatically measure and supply the kneaded material. That is, it is preferable to include a storage hopper capable of storing the kneaded material while stirring and adjusting the delivery amount, and a weighing conveyor for weighing the delivered kneaded material while feeding and supplying a set amount of the kneaded material to the injection machine. .

The kneaded product is leveled by a leveling machine provided above the leveling position. This leveling machine may have a structure in which a leveling plate of approximately the same size as the lower mold is pressed against the kneaded product upper surface, but it is preferable to rotate the leveling plate in order to smooth the kneaded product upper surface smoothly. A molding machine is used to mold the glass disk.
This molding machine is provided with a lower mold and an upper mold that can be matched with the lower mold, and may have any structure as long as the two molds are pressed together to open the mold.

The molded glass disk is taken out from the lower mold by an extruder provided below the demolding position. This extruder may employ a system in which the push-up pin is raised to push the floor plate from below, but the push-up pin is preferably incorporated in the lower mold.

The cleaning tool in the upper and lower mold cleaners may be a brush or the like, but considering the properties of the kneaded material containing water glass, a sponge roller is used, and water is sprayed to this with a spray nozzle. The inclusion of water is more preferable for reliable cleaning.

The mechanism for setting the floor plate in the lower die may be equipped with a magnet chuck, and the floor plate may be magnetically attached and inserted into the lower die. Of course, a combination of a vacuum suction type chuck, a conveyor and a stopper may be used. Other configurations such as a combination of a chute and a stopper may be adopted. In addition, considering full automation, it is preferable to use a method of stocking floorboards and automatically supplying them.

That is, the floor plate setting machine comprises a floor plate clamp carrier and a floor plate lifter, and the floor plate clamp carrier is a rodless carrier rod extending from above the floor plate stock position to above the floor plate setting position of the rotary table. A cylinder, a lifting air cylinder mounted so as to be transferred to the transport rodless cylinder, and a magnet chuck mounted on the lifting air cylinder for magnetically sticking a floor plate, while the floor plate lifter is a floor plate stock. A rotary actuator that is provided at a position and can rotate in every 180 ° in a horizontal plane,
It is composed of a pair of mounting plates that are mounted symmetrically at 0 ° and can be stacked and mounted, and a rodless cylinder that drives the mounting plate up and down so that the mounting plate can be magnetically attached to the magnet chuck. Good.

Considering the fully automatic molding of the glass disk, it is preferable that the molded and extruded glass disk can be conveyed to the next firing step without manual labor. Therefore, a conveyer that intermittently conveys the molded glass disc and the outer peripheral edge of the floor plate extruded from the lower mold at the demolding position are held by clamp claws from below and clamped and transferred to the conveyer together with the glass disc. A product take-out machine that releases the clamps and places it, and a plurality of glass disks lined up in the longitudinal direction on the conveyor when the leading glass disk in the longitudinal direction reaches a predetermined position on the conveyor, and a side shelf along with a floor plate. A pusher for pushing into the vehicle is preferably provided.

[0017]

According to the present invention, when the glass disk is automatically molded, the cleaning tool is swung and brought into sliding contact with the mating surfaces of both the upper mold and the lower mold for cleaning. The water glass and the glass powder do not adhere to the mating surface before the molds are matched, and accurate mold matching can be performed to stably mold the dimensional accuracy of the glass disk, particularly the disk thickness. In particular, when a sponge roller that retains water is used as the cleaning tool, the upper mold and the lower mold can be cleaned more reliably.

When the molded glass disk is pushed out from the lower mold, the outer peripheral edge of the floor plate is held and clamped from below by the clamp claws and transferred to a transfer conveyor for intermittent transfer so that the leading glass disk is at a predetermined position. When the number of glass discs lined up on the conveyor is pushed into the side shelves together with the floorboard when reaching, the glass discs can be sent to the next process without relying on manual work, and the glass discs will not be broken. It can be more reliably prevented and the glass disk can be fully automated without the need for manual work.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the specific examples shown in the drawings. 1 to 5 show an automatic glass disk molding machine according to an embodiment of the present invention. In the figure, an automatic molding machine 1 is installed on a work floor.
A conveyor 2 is arranged on the side of the conveyor 2, and a shelving 3 can be arranged on one side of the conveyor 2.

In the automatic molding machine 1, a rotary table 10 is rotatably supported on a work floor in a horizontal plane, and the rotary table 10 has a drive motor 10 as shown in FIG.
0 and a roller gear index unit 101, the rotary table 10 is rotated intermittently at every rotation angle of 60 °, and each of the six positions is a pouring position A, a leveling position B, a molding position C, and a demolding position. The position D, the floor plate setting position E, and the buffer position F are set.

Lower molds 11 are provided on the outer peripheral side of the rotary table 10 at intervals of 60 °. That is, the turntable 1
As shown in FIG. 3, a mounting hole is formed at 0, and a mounting base 110 is inserted into the mounting hole and fixed by a fastening bolt. A locking portion is formed on the mounting base 110 so as to form a part of an annular shape, and the locking portion has a cylindrical lower mold body 1.
The locking portion of 11 is locked by rotation, and the mounting base 110
The centering rod 112 is fixed by bolts or the like at approximately the center, and thus the lower die 11 is exchangeably provided on the rotary table 10. An annular iron plate 113 is inserted into the lower die main body 111, but push pins 114 for pushing up the iron plate 113 are vertically slidably attached to the mounting base 110.

On the work floor, the pouring machine 12 is located at the pouring position A, the leveling device 13 is at the leveling position B, the molding machine 14 is at the molding position C, the extruder 15 is at the demolding position D, and the floorboard setting position E is on the working floor. Each floor board setting machine 16 is provided.

The injecting machine 12 has an injecting hopper 120 as shown in FIG. 4, and the injecting hopper 120 is moved up and down by an air cylinder 122 and is rotated by a drive motor 121 capable of speed control.

The injection hopper 120 is equipped with a storage hopper 40 and a weighing conveyor 41.
No. 0 has a screw structure at the lower end so that the amount of the kneaded material to be sent can be adjusted. A stirring blade 400 is provided in the storage hopper 40, and the stirring blade 400 is rotated by a geared motor 401. It has become so. The storage hopper 40 is provided with a bucket lifter 402 for supplying a raw material, and the bucket lifter 402 is driven by a motor 403.

The weighing conveyor 41 is a receiving conveyor 410 for receiving the kneaded material from the storage hopper 40, and a receiving conveyor 4
The feeding conveyor 413 receives the kneaded material from 10 and supplies it to the injection hopper 120, and the automatic weighing device 415 for weighing the kneaded material on the feeding conveyor 413. The receiving conveyor 410 is driven by the motor with brake / clutch 411. At the same time, the supply of the kneaded material to the feeding conveyor 413 is stopped by the shutter 414 driven by the air cylinder. Note that 412
Is a motor for driving the feeding conveyor.

As shown in FIG. 4, the lower mold 11 is attached to the leveling machine 13.
Is provided with a leveling plate 130 that substantially fits with the leveling plate 13.
Zero is moved up and down by a hydraulic cylinder 132 and is rotated by a motor 131 capable of speed control.

The molding machine 14 includes an upper mold 140 as shown in FIG.
And a hydraulic cylinder 141 for mold clamping. A cleaning machine 42 is disposed on the side of the molding machine 14, and in the cleaning machine 42, a sponge roller 420 is provided to extend horizontally around a vertical rotation axis, and the sponge roller 420 rotates or rotates in a fixed state. Rotary actuator 421
Is swung around a vertical swivel axis, and slidably contacts and cleans the mating surfaces 142 and 115 of the upper die 140 and the lower die 11 and the punch lower surface of the upper die 140. Sponge roller 42
A spray nozzle 422 for injecting water and retaining the water is provided above 0. In the present embodiment, the cleaning machine 42 uses sponges for both the upper mold and the lower mold, but this may be a brush having an appropriate material shape, or different materials for the upper mold and the lower mold may be used.

As shown in FIG. 5, the extruder 15 is constructed by attaching a guide head 151 to the tip of a rod of a hydraulic cylinder 150, and the guide head 151 presses the push pin 114 of the lower die 11 from below to lay the iron plate 113. Is taken out from the lower mold 11 together with the glass disk W.

As shown in FIG. 5, the floor plate setting machine 16 is composed of a floor plate lifter 160 and a floor plate clamp carrier 161. In the floor plate lifter 160, a rotary actuator 163 is attached to a rodless cylinder 162 so as to be driven up and down.
3, a mounting plate 164 is attached to the mounting plate 164, and the laid iron plate 113 removed from the glass disk W and cleaned is laid on the mounting plate 164 and placed at a position where it is clamped by the floor plate clamp carrier 161. It is designed to be rotated.

In the floor plate clamp transporter 161, a transport rodless cylinder 167 is provided between the floor plate lifter 160 and above the floor plate setting position E of the rotary table 10,
An elevating air cylinder 166 is attached to the rodless cylinder 167 so as to be transferred, and a magnet chuck 165 is attached to the air cylinder 166 to magnetically attach the iron plate 113.

A product take-out machine 43 is provided between the demolding position D of the rotary table 10 and the carrying table 2. In this product unloading machine 43, as shown in FIG. 5, a rodless cylinder 430 is disposed between the upper part of the mold removing position D and the upper part of the starting side of the transport table 2, and the air cylinder 431 is transferred to the rodless cylinder 430. Mounted so that the clamp claws 4 are attached to the air cylinder 431.
32 is provided, and the clamp claw 432 is driven by an actuator 433 to hold and clamp the outer peripheral edge of the iron plate 113 together with the glass disk W from below.

As shown in FIG. 1, the conveyor 2 comprises a drive motor 20 and a roller gear index unit 21, and is intermittently conveyed by a predetermined distance. A pusher 22 is provided on the transport conveyor 2, and the pusher 22 is composed of an air cylinder 220 and a push plate 221. When the sensor 222 detects that the glass disk W has arrived at the end side of the transport conveyor 2, Five glass disks W are pushed into the shelves of the shelving 3. The shelving 3 has its shelves raised and lowered by a pole lift 30. Incidentally, 31 is a pole lift drive motor.

Next, the operation method will be described with reference to FIGS. When the kneaded material obtained by kneading the glass powder and the binder (water glass) is put into the bucket lifter 402, the bucket lifter 402 moves up and the kneaded material is stored in the hopper 4.
Supply to 0 and store. In the storage hopper 40, the stirring blade 4
Since 00 is constantly rotated, the kneaded product does not solidify.

From the lower end of the storage hopper 40, a screw-adjusted amount of the kneaded material is supplied to the receiving conveyor 410,
Furthermore, it is sent to the input conveyor 413 and the automatic weighing device 415
Weighed in. When the amount of the kneaded material on the feeding conveyor 413 reaches the set amount, the receiving conveyor 410 is stopped and the supply of the kneaded material to the feeding conveyor 413 is stopped by the shutter 414, while the measured kneaded material on the feeding conveyor 413 is It is supplied to the injection hopper 120.

On the other hand, the rotary table 10 is rotated every 60 ° at a predetermined timing, and the lower die 11 is moved to the injection position A.
When the lower mold 11 is temporarily stopped, the kneaded product is injected from the injection hopper 120 into the lower mold 11, and when the lower mold 11 is rotated to the next leveling position B and temporarily stopped, the leveling plate 130 is rotated and lowered. As a result, the upper surface of the kneaded material in the lower mold 11 is uniformly leveled.

When the lower mold 11 is temporarily stopped at the next molding position C, the upper mold 140 descends and is aligned with the lower mold 11 and pressed to mold the glass disk W, and then the upper mold 1
40 moves up and the lower die 11 is sent to the next demolding position D.
The molded upper mold 140 is cleaned with a sponge roller 420 containing water. The lower mold 11 is similarly cleaned with a sponge roller containing water after extrusion of the glass disk W and before molding.

At the demolding position D, the guide head 151 presses the push-out pin 114 from below to push the spread iron plate 113 upward together with the glass disk W. At this time, the clamp 432 of the product take-out machine 43 is at the demolding position D. The iron plate 113 and the glass disk W, which are located at the upper side, are clamped from the lower side and lifted up, transferred to the starting end side of the conveyor 2 and placed on the conveyor 113.

The transport conveyor 2 is driven to transport at a predetermined timing, and when the above-mentioned operation is repeated and five glass disks W are accumulated on the transport conveyor 2, this is detected by the sensor 222 and the pushing machine 22 is operated. The five glass disks W are pushed into the shelves of the shelving 3.

When each of the shelves of the shelving 3 is filled with glass discs, the shelving 3 is carried to a heating process to heat the glass discs W into products, while the iron plate 113 is separated and manually It is washed with water, coated with a release agent, returned to the floor plate setting machine 16, and stacked on the mounting plate 164 of the floor plate lifter 160 by a predetermined number of sheets.

When the lower die 11 is rotated to the floor plate setting position E and temporarily stopped, the floor plate clamp carrier 161 uses the magnet chuck 165 to move the floor plate 11 of the floor plate setting machine 16.
One piece of 3 was magnetically adhered, and this was conveyed to the lower die 11 and the lower die 11
Inserted inside, the lower mold 11 moves to the first injection position A through the buffer position F.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an automatic glass disk molding machine according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a rotary table in the automatic molding machine.

FIG. 3 is a cross-sectional configuration diagram showing a lower mold of the automatic molding machine.

FIG. 4 is a diagram showing a layout and a schematic structure of an injection machine, a leveling machine, and a molding machine in the automatic molding machine.

FIG. 5 is a diagram showing a layout and a schematic structure of an extruder, a product take-out machine, and a floorboard setting machine in the automatic molding machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Automatic forming machine 2 Conveyor 3 Shelving 10 Rotating table 11 Lower mold 12 Injection machine 13 Leveling machine 14 Forming machine 15 Extruder 16 Floorboard setting machine 40 Storage hopper 41 Cleaning conveyor 43 Cleaning machine 43 Product take-out machine 113 Iron sheet 114 Extrusion pin 160 Laying plate lifter 161 Laying plate clamp Conveyor 162 Rodless cylinder 163 Rotary actuator 164 Mounting plate 165 Magnet chuck 166 Lifting air cylinder 167 Conveying rodless cylinder 420 Sponge roller 422 Spray nozzle 430 Rodless cylinder 431 Air cylinder 432 Clamp Claw A Injection position B Leveling position C Forming position D Demolding position E Laying plate setting position

Claims (5)

[Claims] 1. A rotary table is provided with at least five lower dies at equal angular intervals, and the rotary table is intermittently driven and
In an automatic glass disk molding machine that automatically sequentially performs injection, leveling, molding, demolding, and floor plate setting at each table rotation stop position, it is installed on the side of the molding position and laterally from the vertical turning axis. An automatic glass disk molding machine comprising a cleaning machine for cleaning an upper mold and a lower mold by rotating an extending cleaning tool around a vertical rotation axis and slidingly contacting the lower mold upper surface and the lower mold upper surface. 2. A conveyer for intermittently conveying a molded glass disc, and an outer peripheral edge of a floor plate extruded from a lower mold at a demolding position, which is clamped by being held by clamp claws from below and conveyed with the glass disc. A product take-out machine that transfers the product to the conveyor, releases the clamps and places it, and a plurality of glass disks lined up in the longitudinal direction on the conveyor when the leading glass disk in the longitudinal direction reaches a predetermined position on the conveyor. The glass disk automatic molding machine according to claim 1, further comprising: a pusher that pushes it into a side cart. 3. A storage hopper capable of storing a kneaded product of glass powder and a binder while stirring and controlling the amount of the sent out, and a weighed amount of the sent kneaded product while being conveyed, and feeding a set amount of the kneaded product into an injection machine. A metering conveyor for supplying the gas.
Alternatively, the glass disk automatic molding machine described in 2. 4. The cleaning machine comprises a sponge roller supported by an arm extending laterally on a vertical swivel shaft, a rotary actuator for swiveling the sponge roller around the vertical swivel shaft, and a spray for spraying water on the sponge roller. The glass disk automatic molding machine according to any one of claims 1 to 3, which comprises a nozzle. 5. A mechanism for performing the floor plate setting includes a floor plate clamp transporter and a floor plate lifter, and the floor plate clamp transporter extends for transportation from above the floor plate stock position to above the floor plate setting position of the rotary table. The rodless cylinder, an ascending / descending air cylinder mounted so as to be transferred to the carrying rodless cylinder, and a magnet chuck attached to the ascending / descending air cylinder for magnetically attaching a floor plate. A rotary actuator that is provided at a floor plate stock position and can rotate in every 180 ° in a horizontal plane, a pair of mounting plates that are symmetrically attached to the rotary actuator by 180 ° and that can be stacked and placed, Consists of a rodless cylinder that drives the mounting plate up and down so that it can be magnetically attached to a magnet chuck. The automatic glass disk molding machine according to any one of claims 1 to 4.