JPH07100918A - Receptacle processing die exchange system - Google Patents

Abstract

(57) [Summary] [Purpose] You can easily change the mold in a short time.
(EN) Provided is a socket processing die exchange system capable of improving exchange workability and production efficiency. [Structure] A plurality of socket processing dies 52 having different shapes, etc.
Are fixed to rectangular mold mounting plates 51 of the same shape to form the socket processing mold assemblies A, B, C, D, and the molds are exchanged to the side of the mold mounting position of the processing machine 5. An apparatus 7 is provided, and the mold exchanging apparatus 7 is provided with a lift base 14 which can move up and down and can be stopped at an arbitrary position.
4 is provided with a plurality of lateral guides 21 for slidably supporting the die mounting plates 51 of the plurality of die processing die assemblies A ... To the die mounting position side of the processing machine 5, ,
A lateral guide 70 into which the mold mounting plate 51 of the socket processing mold assembly A slid from the mold exchanging device 7 is inserted is provided, and the socket processing mold assembly A is received. , Hydraulic clamp 76 for fixing at the mold mounting position
Etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for exchanging a socket processing die for molding a pipe end of a heat-softened thermoplastic resin pipe into a predetermined shape.

[0002]

2. Description of the Related Art Conventionally, a die for processing a socket is detachably attached to a processing machine by a bolt, and a pipe end of a thermoplastic resin pipe is formed into a predetermined shape as follows.

That is, a pipe end of a thermoplastic resin pipe is heated and softened in advance, and a socket processing die attached to a processing machine is inserted into the pipe end to form the pipe end into a predetermined shape.

As described above, in the processing of the pipe end, different types of receiving hole processing dies are required due to the difference in the diameter of the pipe end and the processing shape, and therefore the processing machine needs to be replaced. When exchanging this socket processing die, it is heavy, so hang it with a crane etc., remove the bolts and lower it, then lift the next socket processing die and place it on the die mounting position of the processing machine and secure it with the bolts. Had been (Japanese public Sho 62-46340
(See the official gazette).

[0005]

However, in such a conventional one, since the socket processing die is attached and detached with bolts using a crane or the like, the replacement work is troublesome and at the same time. However, it takes a long time for replacement, and the production line is stopped during that time, resulting in a decrease in production efficiency.

[0006] Therefore, the present invention is to provide a socket processing die exchanging system capable of exchanging the die easily in a short time and improving the exchanging workability and the production efficiency. It is an issue.

[0007]

In order to solve the above problems, the present invention solves the above problems by heating and softening the pipe end of a thermoplastic resin tube and inserting the thermoplastic resin pipe into a socket processing die so that the pipe end has a predetermined shape. In a system for exchanging the socket processing mold of a processing machine for molding into another mold, a plurality of socket processing molds with different shapes are fixed to mold mounting plates of approximately the same shape An assembly is formed, and a mold exchanging device is arranged beside the die mounting position of the processing machine, and the die exchanging device is provided with a lift base that is vertically movable and can be stopped at any position. , The lift base is provided with a plurality of lateral guides for slidably supporting the die mounting plates of the plurality of die processing die assemblies on the die mounting position side of the processing machine,
The processing machine is provided with a lateral guide into which the die mounting plate of the socket processing die assembly slid from the mold exchanging device is inserted, and the die with the socket processing die assembly received. It is characterized in that it is a socket processing die exchange system provided with a fixing means for fixing at a die mounting position.

[0008]

According to such a construction, in order to perform the die exchange, the fixing means is released to allow the receiving die assembly mounted on the processing machine to be free, and the die exchanging device via the lateral guide. Slide it to the side and pull it into the lateral guide of this mold changer. Next, the lift base of this device is moved up and down to position an arbitrary receptacle replacement mold assembly on the side of the mold mounting position of the processing machine, and is installed in each of the mold replacement device and the processing machine. Adjust the height of the horizontal guide. Then, the receptacle exchange mold assembly is slid, inserted into the lateral guide of the processing machine, and fixed by the fixing means at the mold mounting position for use.

[0009]

EXAMPLES The present invention will be described below based on examples.

1 to 12 show an embodiment of the present invention.

First, the structure will be described. FIG. 1 shows an entire series of production lines. In the figure, reference numeral 1 is a cutting device for cutting the thermoplastic resin pipe 2 into an arbitrary length.
The tube end 2a of the tube 2 cut by is heated and softened by the heating device 5. Then, by the feeding device 4, the tube end 2a of the tube 2
After being processed by the processing machine 5, it is stocked in the stocker 6. A mold exchanging device 7 is arranged beside the processing machine 5.

The mold exchanging device 7 is provided with a pair of front-rear direction guides 11 in the front-rear direction along the processing machine 5, and a movable body 12 is provided in the guides 11 along the front-rear direction by a drive device (not shown). It is movably installed.

A vertical guide 13 is provided on the moving body 12, and the lift base 1 is attached to the guide 13.
4 is mounted so as to be vertically movable, and the lift motor 14 is driven to rotate so that the ball screw 16 is rotated, whereby the lift base 14 is moved up and down. This ascending / descending distance is controlled by the encoder 17.

The lift base 14 can be equipped with a total of four socket processing die assemblies A, B, C and D of different types. This socket processing die assembly A, B,
As shown in FIG. 2, C and D are the die mounting plate 51 having the same shape, and the die 5 for receiving the holes having different shapes and structures.
2, 53, 54, 55 are attached. The die mounting plate 51 has a rectangular shape and is slidably provided on a pair of upper and lower lateral guides 21 provided on the lift base 14 so as to control the temperature and vacuum piping of the receiving die 52. Is provided, and the connection portion 56 and the socket processing die 52 are connected by a pipe (not shown). The connecting portion 56 is detachably attached to the auto coupler 22 provided on the lift base 14. Further, as shown in FIG. 7, an engaging groove 57 is formed at the lower end edge of the die mounting plate 51, and the lock pin 23 provided on the lift base 14 is provided in the engaging groove 57 in the pneumatic cylinder. It is designed to be disengaged by 24.

Further, the movable body 12 is provided with a horizontal slide cylinder 25 at a predetermined position for sliding the socket processing die assembly A. A claw 27 rotated by a rotation motor 26 is arranged at the tip of the cylinder 25. A locking projection 58 that is hooked by the claw 27 is disposed on the mold mounting plate 51.

Further, the processing machine 5 is provided with a pair of upper and lower lateral guides 70, and the die mounting plate 5 is attached to the guides 70.
1 is slid from the lateral direction and inserted.

Further, the processing machine 5 is provided with a stopper 71 for stopping the inserted mold mounting plate 51. In addition, a positioning pin 72 is vertically movable by a hydraulic cylinder 73 in the processing machine 5, and a lower end portion of the positioning pin 72 is formed in a tapered shape. It is adapted to be inserted and locked in the formed insertion hole 59. Further, the processing machine 5 is provided with a triple auto coupler 75 which is vertically moved by a pneumatic cylinder 74, and the triple auto coupler 75 is detachably attached to the connection portion 56 of the die mounting plate 51. It has become so. Furthermore, the processing machine 5 is provided with a pair of hydraulic clamps 76 as "fixing means" for pressing the die mounting plate 51.

Next, the operation will be described.

A socket processing die assembly C is set on the processing machine 5, and the socket processing die 54 of the assembly C is used to connect the pipe end 2a of the thermoplastic resin pipe 2 to the production line as shown in FIG. Was formed into a predetermined shape.

That is, after the thermoplastic resin pipe 2 is cut into a predetermined length by the cutting device 1, the pipe end 2a of the resin pipe 2 is heated by the heating device 3 for 90 seconds to be softened. Then, the thermoplastic resin pipe 2 is conveyed by the feeding device 4, and the socket processing die 54 mounted on the processing machine 5 is inserted into the pipe end 2a of the resin pipe 2 for molding. In this molding, after the softened pipe end 2a is deformed into a predetermined shape, it is cooled and hardened by cooling water sprayed from a spray port (not shown). After that, the extraction ring 77 of the processing machine 5 is moved as shown by the chain double-dashed line in FIG. 6 to move from the socket processing die 54 to the pipe end 2a.
To leave. Then, the removal wheel 77 is returned.

Then, in the course of molding, as shown in FIG. 11, the next heating of the thermoplastic resin tube 2 is carried out, and processing is carried out in the same steps as described above.

When the exchange start switch of the die exchanging device 7 is turned on in order to perform die exchanging while the plurality of thermoplastic resin tubes 2 are sequentially processed in this way, as shown in FIG. Then, the mold exchanging device 7 is advanced to the side of the processing machine 5 by the front-rear direction guide 11 and the like. At this position, it waits until the removal ring 77 comes out, and when the signal of the state where the removal ring 77 comes out is detected, the mold replacement is performed within 40 seconds, and when the replacement is completed, the mold replacement device 7 retracts. To do.

This die exchange is performed as follows.
First, from the state shown in FIG. 2, the socket processing die assembly C attached to the processing machine 5 is removed.

The pneumatic cylinder 74 raises the triple auto coupler 75 to separate it from the connecting portion 56 on the side of the socket processing assembly C. After that, the positioning pin 72 is pulled out by the hydraulic cylinder 73, and the hydraulic clamp 7
6 is projected forward and rotated to open the mold mounting plate 51.

Then, the horizontal slide cylinder 25 is slid to the right in the figure, and the pawl 27 provided at the tip of the horizontal slide cylinder 25 is rotated by the rotation motor 26, so that the die mounting plate 51 is engaged. The horizontal slide cylinder 25 hooks on the stop projection 58 and receives the mouthpiece processing die assembly C.
Slide along the lateral guide 70 to the left in the figure,
The lateral guide 21 on the mold exchanging device 7 side is inserted. With the slide completed, as shown in FIG. 7, the lock pin 23 is projected by the pneumatic cylinder 24 so that the mold mounting plate 5
The die exchanging device 7 is inserted into the engaging groove 57 of No. 1
Fix the socket processing die assembly C to.

Next, the lift motor 15 is driven and the ball screw 16 is rotated to drive the lift base 14.
Is moved up and down to be stopped, and any of the socket processing die assemblies A, B and D is selected. Then, the lock pin 23 is disengaged, the mold mounting plate 51 is slid rightward in the drawing by the horizontal slide cylinder 25, and is inserted into the lateral guide 70 of the processing machine 5, so that the processing machine 5 side Stopper 71
Abut. After that, the positioning pin 72 is lowered,
It is inserted into the insertion hole 59 of the mold mounting plate 51. In this case,
Since the lower end portion of the positioning pin 72 has a tapered shape, even if there is some positional deviation, it is inserted into the insertion hole 59 while being centered and positioned. After that, the mold mounting plate 51 is clamped by the pair of hydraulic clamps 76, and the triple auto coupler 75 is lowered to connect the connecting portion 56.
Connect to. Then, the mold exchanging device 7 is retracted, the removal ring 77 of the processing machine 5 is returned, and the replaced socket processing mold 52 is inserted into the pipe end 2a of the thermoplastic resin pipe 2 to be processed next. And molded.

As described above, the die exchange work is performed by sliding the receiving end die assembly A ... From the lateral direction of the processing machine 5 and mounting it by the hydraulic clamps 76, etc. Since it is not necessary to lift the three-dimensional objects A ... with a crane and bolt them, it is possible to easily replace the mold in a short time.

Further, since temperature control and the like can be performed in a state where the socket processing die assembly A ... Is held in the die exchanging device 7, a problem occurs even when the excavator is used immediately after exchanging. Never.

Further, even when the exchange start switch is turned on during the molding of the pipe end 2a of the thermoplastic resin pipe 2,
The resin pipe 2 is not wasted because the resin pipe 2 is placed in a standby state until the molding is completed and is exchanged after the molding is completed. Further, as shown in FIG. 11, the thermoplastic resin tube 2
After the molding of the pipe end 2a of the
It takes about 56 seconds until the molding of the tube end 2a of
During this time, since the molds are exchanged, continuous operation can be continued without stopping the operation of the cutting device 1, the heating device 3, etc., and thus the wasteful thermoplastic resin pipe 2
Therefore, the production efficiency can be improved.

[0030]

As has been described above, according to the present invention, the socket processing die assembly can be slid in the lateral direction of the processing machine so as to be attached to or removed from the processing machine. Since it is not necessary to lift the socket processing mold assembly with a crane and bolt it, it is possible to easily replace the mold in a short time and improve workability and production efficiency. It has a practically useful effect.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention and explaining a part of a production line.

FIG. 2 is a front view showing a processing machine and a mold exchanging device of the same embodiment.

FIG. 3 is a top view showing a processing machine and a mold exchanging device of the same embodiment.

FIG. 4 is a side view showing a processing machine and a mold exchanging device of the same embodiment.

FIG. 5 is a top view showing a main part of the mold exchanging device of the same embodiment.

FIG. 6 is a top view showing a socket processing die of the same embodiment.

FIG. 7 is a partial cross-sectional view illustrating a lock pin portion of the mold exchanging device of the same embodiment.

FIG. 8 is a front view showing a state in which a mold mounting plate is inserted into the processing machine of the same embodiment.

FIG. 9 is a side view showing a state in which a mold mounting plate is inserted and clamped in the processing machine of the same embodiment.

FIG. 10 is a partial cross-sectional view illustrating a positioning pin portion of the mold exchanging device of the same embodiment.

FIG. 11 is a time chart diagram for explaining a socket processing step and mold replacement timing in the same embodiment.

FIG. 12 is a flow chart for explaining the automatic die change operation of the same embodiment.

[Explanation of symbols]

 2 Thermoplastic resin pipe 2a Pipe end 5 Processing machine 7 Mold changing device 14 Lift base 21 Lateral guide A, B, C, D Receptacle processing Mold assembly 51 Mold mounting plate 52,53,54,55 Receptacle processing Mold 70 Lateral guide 76 Hydraulic clamp (fixing means)

Claims (1)

[Claims] 1. A die for forming a receiving end of a processing machine for forming a receiving end of the pipe end into a predetermined shape by heating and softening the pipe end of the thermoplastic resin pipe and inserting the receiving end into a receiving end die. In the system to be exchanged with each other, a plurality of socket processing dies having different shapes are fixed to the mold mounting plate of substantially the same shape to form a socket processing die assembly, and the processing machine mounting position of the processing machine is set. A mold exchanging device is disposed laterally, and the mold exchanging device is provided with a lift base that can move up and down and can be stopped at an arbitrary position, and the lift base has a plurality of socket processing die assembly bodies. A plurality of lateral guides that slidably support the die mounting plate of the processing machine on the side of the die mounting position of the processing machine are provided, and the processing machine is provided with a die for the socket processing die assembly slid from the die exchanging device. Provide a lateral guide into which the die mounting plate is inserted In a state where the processing mold assembly has been accepted, the receptacle processing mold exchange system, characterized in that a fixing means for fixing a die mounting position.