JPS597071Y2 - Demolding device in centrifugal molding equipment - Google Patents

Description

[Detailed description of the invention] The present invention is based on centrifugal molding, in which a splittable middle mold is placed in a rotary mold, and a rubber mold is placed in the middle mold, and a resin tube is centrifugally formed in this rubber mold. This relates to a device for removing molds from equipment, and its purpose is to quickly and accurately perform mold removal.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

First, a centrifugal device will be explained with reference to FIG.

The upper part of the rotation axis 1 shows the receptacle part in a certain state, and the lower part shows the whole part in a fixed state.

Reference numeral 2 is of a rotary type, and is composed of an annular member 3 having both ends, and a cylindrical integral oval-shaped main body 4 attached between opposing surfaces of these annular members 3. It will be placed.

This rotary drive device 5 has a pair of fixed frames 6 and a bearing 7.
A rotary shaft 8 supported through the rotary shaft 8, a wheel 9 attached to both ends of the rotary shaft 8, an annular protrusion 10 integrally attached to the inside of these wheels 9, and one rotary shaft 8. The outer periphery of the wheel body 9 is formed into an arcuate surface 11.

A ring contact surface 12 is formed on the outside of the outer circumference of the annular member 3, and is received by the ring body 9, and a circumferential groove 13 into which the annular protrusion 10 fits is formed inside the ring contact surface 12.

Furthermore, a convex curved surface 14 is formed on the inner periphery corresponding to the circumferential groove 13.

Further, an annular recess 15 is formed on the opposing inner surfaces of both annular members 3.
is in great shape.

An outward ring portion 16 is integrally formed at both ends of the large body 40.

These ring parts 16 can be tightly fitted into the annular recess 15, and in the fitted state, the fixing tool 17 can be inserted from three positions in the circumferential direction.
The two are integrated.

Reference numeral 18 denotes a medium mold that can be inserted into the mold body 4, is configured to be divisible (divided into two) in the circumferential direction, and is made of, for example, aluminum.

Reference numeral 19 denotes a rubber mold that can be attached to the inner surface of the medium mold 18, and is made of soft rubber, silicone, urethane, etc., and has ring portions 20 and 21 extending outward at both ends thereof.

The ring part 20 on the socket side is engaged with a rubber presser jig 22 fitted inside a certain mold body 4, and the ring part 20 on the spout side
1 is engaged with the stepped portion of the medium mold 18.

An end face jig 33 that can be inserted into the large mold main body 4 is attached to the insertion portion side of the medium mold 18.

Further, an end face fixture 24 is provided on the socket side as well, and this includes a flange 24A that is integrated with the rubber presser jig 22 via a fixture 25, and a flange 24A that extends outward from the inner edge of the flange 24A. It consists of a continuous cylindrical portion 24B.

Both end face fittings 23 and 24 apply a ring-shaped presser metal fitting 26 over the outer peripheral surface of the annular member 3, and press the presser metal fitting 26, the annular member 3, and the ring portion 16 from three positions in the circumferential direction. They are fixed by being integrated with a fixture 27.

28 is installed inside the socket side end face jig 24 and is connected to the rotation axis 1.
This is a cylindrical socket inner surface regulating device that is movable in the direction and protrudes inwardly from the end face jig 24 to cover the inner circumferential surface of the oval socket.

A ball 30 that is biased inward by a spring 29 is provided on the inner surface of the end face stopper 24, and the balls 30 are provided at two locations apart in the direction of the rotation axis 1 on the outer surface of the socket inner surface regulating member 28. Recesses 31 and 32 into which 30 can be elastically fitted are formed.

The positions of these recesses 31 and 32 are such that the ball 30 fits into the recess 31 when the inner surface of the end jig 24 and the inner surface of the socket inner surface restrictor 28 are flush with each other, and the socket inner surface restrictor 28 The ball 30 is configured to fit into the recess 32 when covering the inner circumferential surface of the receptacle.

Reference numeral 33 denotes a swingable stopper, the middle of which is attached to the fixed frame 6 via a horizontal pin 34.

The upper ends of these stoppers 33 are bent outward, and the lower surface of the bent portion is shaped into a stopper concave curved surface 35 that can be positioned inside the convex curved surface 14.

Further, the lower end of the stopper 33 is bent inward, and this bent portion becomes a locking portion 36 for the fixed frame 6.

A stopper 3 is provided between this locking portion 36 and the fixed frame 6.
3 is provided.

Next, the centrifugal forming operation using the centrifugal forming apparatus having the above structure will be explained.

The portion above the rotational axis 1 shows the receptacle when it is in a certain shape.

In other words, the socket inner surface regulating device 28 has moved outward,
This position is maintained by the ball 30 fitting into the recess 31.

In this state, while rotating the rotary mold 2 around the rotation axis 1 by operating the rotary drive device 5, the spigot side end face fitting 2 is rotated.
3 or the resin liquid, reinforcing fibers,
A material such as sand is supplied, and the receptacle portion 38a is centrifuged or shaped.

Thereafter, the receptacle inner surface restrictor 28 is pushed in by a predetermined amount, and this pushed-in position is maintained by the ball 30 fitting into the recess 32.

Next, the material is supplied onto the inner surface of the rubber mold 19 extending from the opening part to the body part in the same manner as described above, and the tube 38 is centrifuged as shown below the rotation axis 1. Shape.

Next, the demolding device will be explained based on FIGS. 2 to 4.

Reference numeral 39 denotes an extraction device for grasping the end face jig 24 integrated with the middle mold 18 side and extracting it from the rotary mold 2, which is attached to the tip of the cylinder device 40 arranged on the extension line of the rotation axis 1 and the piston rod 41 thereof. A plate body 42, a pair of swinging arms 44A, 44B attached to the front surface of the plate body 42 via pins 43A, 43B, respectively, and locking arms bent inward from the tips of these swinging arms 44A, 44B. 45A, 45B, and a cylinder device 46 that moves the swinging arms 44A, 44B toward or away from each other.
Although a pair of upper and lower Bs are provided, there may be a pair of left and right Bs.

A conveyor device 47 is provided between the rotary mold 2 and the extraction device 39, and is for receiving the medium mold 18 extracted from the rotary mold 2 by the extraction device 39.

That is, the conveyor device 47 includes a pair of front and rear rotating shafts 49.50 supported by the machine frame 48, and these rotating shafts 49.50. 5
A pair of chain rings 51 and 52 are attached to the left and right sides of 0, respectively, and a roller chain 53 is attached between the chain rings 51 and 52 facing each other in the front and rear.
It consists of a rail 55 attached to the machine frame 48 to receive the rollers 54 of the roller chain 53, and a concave medium-sized receiving plate 56 attached between the opposing sides of both chains 53. A plurality of 56 are provided at predetermined intervals in the length direction of the chain 53.

Furthermore, swingable locking pieces 63 are attached to the upper portions of both sides of each medium-sized receiving plate 56.

A pivot shaft 57 along the rotation axis 1 is inserted through the lower part of one side of the machine frame 48, and this pivot shaft 57 is rotatably supported by a bracket 59 from the floor 58 side.

Also, between the lower end of the machine frame 48 and the floor 58, there is a space between the machine frame 48 and the floor 58.
A cylinder device 60 for swinging the 8 is provided.

61 is a stopper that receives the other end of the machine frame 48 in a horizontal position;
Reference numeral 62 denotes a transport vehicle that receives the rubber mold 19 taken out.

The rotary mold 2 is stopped when the tube 38 centrifugally punched onto the inner circumferential surface of the rubber mold 19 by the centrifugal punching device is uncured (semi-cured).

Then, by releasing the fixture 27, both presser metal fittings 26 are removed, and the middle mold 18 is brought into a state where it can be pulled out.

Next, the cylinder device 40 is extended with the swinging arms 44A, 44B separated from each other, and the swinging arms 44A, 44B are
is positioned outside the end face jig 24.

Then, due to the contraction of the cylinder device 46, the swinging arms 44A, 4
4B, and their locking portions 45A, 45B are engaged with the end jig 24.

In this state, by contracting the cylinder device 40, the middle mold 18 is extracted from the rotary mold 2 via the end jig 24.

At this time, the rubber molds 19 and 38 are also extracted together.

As the medium size 18 is extracted, it is received by the medium size receiving plate 56 of the conveyor device 47.

At this time, the conveyor device 47 may be rotated automatically by the pulling force of the medium mold 18, or may be forcedly driven.

As shown in FIG. 2, the medium mold 18 extracted from the rotary mold 2 is completely received by the conveyor device 47.

Thereafter, the cylinder device 46 is extended to separate the swinging arms 44A, 44B from each other as shown by the imaginary line in FIG.

Then, as shown by the imaginary line in FIG. 3, the upper half of the splittable medium 18 is lifted up using a hoist (not shown) or the like.

Thereafter, the cylinder device 60 is extended, and the conveyor device 47 is attached to the pivot shaft 57 via the machine frame 48, as shown by the solid line in FIG.
Rock around.

Then, as shown by the imaginary line, the rubber mold 19 is taken out from the medium mold 18 together with the tube 38 and placed on the carrier 62.

The rubber mold 19 containing the tube 38 is transported to the next process by the carrier 62. As described above, according to the present invention, the rubber mold formed by centrifugally cutting the tube can be easily converted from the rotary mold together with the medium mold. It can be extracted easily and quickly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical side view of the centrifugal die-forming device, FIG. 2 is a partially cutaway side view during demolding, and FIG.
The figure is a longitudinal sectional front view in FIG. 2, and FIG. 4 is a longitudinal sectional front view when taken out. 2... Rotating type, 4... Precept type main body, 5
...Rotary drive device, 18...Medium size, 1
9...Rubber mold, 23...End face jig, 2
4...End face jig, 28...Socket inner surface regulating tool, 38...Pipe, 39...Extraction device, 44 A, 44 B... ...Swinging arm, 45A
, 45B...Locking portion, 47...Conveyor device, 53...Roller chain, 56...
...Medium-sized receiving plate.

Claims (1)

[Scope of utility model registration request] A demolding device from a centrifugal molding device that centrifugally shapes a resin tube in a rubber mold with a splittable middle mold positioned in a rotary mold and a rubber mold positioned in the middle mold, A centrifugal hollow die, characterized in that it is provided with an extraction device that grasps an end jig integrated with the middle mold side and pulls it out from the rotary mold, and is provided with a conveyor device that receives the middle mold that is pulled out from the rotary mold by the extraction device. Demolding device in equipment.