JPS5811535Y2 - Ring-shaped hollowing device for snow tiles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ring-shaped hollowing device for a snow-blocking tile that automatically cuts out a ring-shaped hole in the snow-blocking tile during a press-molding operation.

Conventionally, in the press molding process for snow protection tiles, much of the work of cutting out the ring shape was done manually, and a lot of time and effort was wasted on this work.

In addition, there are some models in which a pneumatic or hydraulic cylinder, etc. is integrally attached to the mold and the ring shape is mechanically hollowed out, but this requires accessory equipment such as a compressor or pump, which is extremely uneconomical and makes it difficult to remove the molded material. This method had drawbacks such as interfering with the reversing operation of the mold.

In view of these drawbacks, the present invention has been developed in an attempt to solve the above drawbacks by equipping the lower mold with a cutter for ring-shaped hollowing and also providing a separate mechanism for operating the cutter in and out in a detachable manner. An example of an embodiment of the present invention will be explained based on the drawings. 1 is a lower mold for a snow stopper mold installed in various press molding machines (not shown), and after molding, it is controlled to be reversed forward. The lower mold 1 is configured so that the molded material 2 can be taken out, and a ring forming mold part 4 corresponding to the ring shape 3 of the molded material 2 is provided inside the lower mold 1.

Reference numeral 5 denotes a ring-shaped hollowing mechanism section, in which a cutter 8 made of a thin steel plate is installed in the ring-forming mold section 4 for hollowing out and forming the inner cavity 7 of the ring shape 3 on a mounting plate 6 screwed onto the outer wall of the lower mold 1. A slide shaft 9, which is attached to the cutter 8 so that it can be moved in and out, is slidably supported on a support plate 11 that is connected and supported by a screw rod 10 to the mounting plate 6.
A guide bar 12 projecting downward is attached to the guide bar 12.

Reference numeral 13 denotes a cutter in/out operation mechanism section, in which a support block 15 is attached to a base plate 14 fixedly attached to a press molding machine, and a concave hook fits into a guide bar 12 for operating the cutter 8 in and out of the support block 15. 16
An electric motor 19 has an operating rod 17 that is slidably supported at its tip, one end of a link 18 is pivotally attached to the rear end of the operating rod 17, and the other end of the link 18 is attached to the rear of the base plate 14. The cutter 8 is pivotally connected to a disk-shaped crank 21 mounted on a drive shaft 20 of the cutter 8, and the cutter 8 is moved in and out by rotation of an electric motor 19.

The guide bar 12 attached to the slide shaft 9 integrally projecting from the rear of the cutter 8 and the hook 16 at the tip of the operating rod 17 are released from their mating state when the lower mold 1 is reversed, as shown in FIG. It is configured so that it can be fitted freely.

22 is a proximity switch for confirming the retracted position of the cutter 8; as shown in FIG. When the lower mold 1 returns to the normal position from the inverted state, the guide bar 12
In order to confirm the fitting of the hook 16 with the slide shaft 9, a proximity switch 24 is installed which is activated when the rear end of the slide shaft 9 approaches.

In the figure, 25 is the upper mold, 26.26' is the upper mold 25, a repellent material provided on the opposing surface of the ring forming mold part 4 of the lower mold 1, 27.27' is an air vent, and 28 is a wear-resistant soft material. It is.

Next, to explain the operation of the ring-shaped hollowing device for snow protection tiles according to the present invention, in FIG. are connected by fitting.

From this state, the upper die 25 descends to pressurize the rough area inside the lower die 1, and in this molding state, after the pressurizing action is temporarily released, the electric motor 19 is rotated.

The rotation of the electric motor 19 is controlled by a crank 21. The link 18 converts the motion into a linear motion, so the link 1
As the operating rod 17 pivotally connected to 8 moves forward, the operating rod 17
When the hook 16 at the tip and the guide bar 12 are fitted, the slide shaft 9 moves forward, and the cutter 8 is press-fitted into the ring-forming mold part 4 of the lower mold 1, thereby hollowing out the inner space of the ring-shaped part 3.

When the electric motor 19 further rotates, the cutter 8 operates in the opposite direction to the above-described movement and returns to the reverse position, and when the proximity switch 22 senses the proximity dock 23 attached to the crank 21 at the backward limit position, the electric motor 19 stops.

Further, the upper mold is raised by the detection of the proximity switch 22, and then, as shown in FIG. 3, the lower mold 1 is turned forward and the molded blank 2 is taken out.

In this operation, the fitting between the guide bar 12 and the hook 16 is released, so that the ring-shaped hollowing mechanism section 5 and the cutter in/out operation mechanism section 13 are separated.

Next, the rough ground to be used for the next molding is put into the inverted lower mold 1, and the lower mold 1 returns to the state shown in FIG.
The guide bar 12 and the hook 16 are fitted together again, the ring-shaped hollowing out mechanism section 5 and the cutter in/out operation mechanism section 13 are connected, and the operations of forming, ring-shaped hollowing out, and taking out are repeated in the same manner.

If the guide bar 12 and hook 16 do not fit together for some reason when the lower mold 1 returns, the proximity switch 24 will not detect the rear end of the slide shaft 9 and the lowering of the upper mold 25 will be stopped.

In short, the present invention has a ring-shaped hollowing mechanism section 5, which includes a cutter 8 for ring-shaped hollowing that is removably attached to a lower die 1 that is reverse-controlled, and a guide bar 12 that is attached to a slide shaft 9 that integrally interlocks with the cutter 8. Install, lower mold 1
An operating rod 17 equipped with a hook 16 that engages and disengages from the guide bar 12 in connection with the reversing operation of the operating rod 17 is slidably supported, and the operating rod 17 is linked via a link 18 to a crank 21 attached to an electric motor 19. Since a cutter entry/exit operation mechanism is provided, it is possible to automatically cut out the ring shape 3 of the snow protection tile at the same time as the molding operation, making continuous production possible. Since the ring-shaped hollowing mechanism section 5 and the cutter in/out operation mechanism section 13 are automatically separated, there is no problem in reversing the lower die 1, and the cutter 8 is moved in and out by converting the rotation of the electric motor 19 into linear motion. Since it is operated by pneumatic or hydraulic pressure, it is economical and does not require accessory equipment such as compressors or pumps, compared to mechanisms, and its practical effects are tremendous.

[Brief explanation of the drawing]

The figures show an example of the implementation of the present invention, in which Fig. 1 is a front view of the ring-shaped hollowing device for snow protection tiles according to the present invention with the cutter in the retracted position, and Fig. 2 is a front view of the same cutter in the forward position. Fig. 3 is a front view of the mold when it is turned upside down, and Fig. 4 is a perspective view of the molded base of the snow tile. 1...Lower mold, 3...Ring type, 5...
... Ring-shaped hollowing mechanism section, 8 ... Cutter, 9
...Slide shaft, 12...Guide bar, 13...Cutter entry/exit operation mechanism section, 16...
...Hook, 17...Operation rod, 18...
...Link, 19...Electric motor, 21...
··crank.

Claims (1)

[Scope of utility model registration request] A cutter for ring-shaped hollowing is attached to the lower mold which is controlled to be reversed so that it can be freely moved in and out, and a ring-shaped hollowing mechanism unit is installed, which is made up of a guide bar attached to a slide shaft that integrally interlocks with the cutter. slidably supporting an operating rod having a hook that can be fitted into and removed from the guide bar;
A ring-shaped hollowing device for a snow tile, characterized in that it is provided with a cutter in/out operation mechanism section in which the operating rod is connected to a crank attached to an electric motor via a link.