JPH058263A - Automatically mold replacing method in molding machine - Google Patents

Abstract

PURPOSE:To replace a mold automatically by using the molded object- automatically taking out device to be fitted integrally with a molding machine. CONSTITUTION:A placing carriage is self-run, and its carrying out member is positioned at the molding part of a molding machine. The fixed state of a pair of molds for the fitting platens 17 of stationary side and movable side is relased by discontinuing the operation of a clamping member, and the mold is placed on a supporting roller. The chuck of a molded object-automatically taking out device 23 is moved, and after the fixing member fitted thereto has been fixed to a pair of molds, a pair of molds on the supporting roller is moved onto a carrying-out member and is taken out by moving and controlling the chuck. Next, the placing carriage is self-run, and after a carrying-in member has been moved to the molding part, the fixing member of the chuck is fixed to the mold to be fitted, and its movement is controlled, and then a pair of molds placed on the carrying-in member are moved onto the supporting roller of the molding part. Next, each mold placed on the supporting roller is fixed to the fitting platens of stationary side and movable side by operating a clamp member, whereby the mold is replaced automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically changing a mold mounted on an injection molding machine.

[0002]

2. Description of the Related Art As a conventional die automatic changer, a traveling rail is arranged on a front side or a rear side of an injection molding machine in a direction coinciding with an axis of a tie bar, and the traveling rail is orthogonal to the axis of the tie bar. A loading cart equipped with a carry-in and carry-out roller conveyor that can be transported in any direction is provided so that it can be self-propelled.

Further, on the fixed side and the movable side of the injection molding machine, a large number of supporting rollers and respective molds to be mounted, which coincide with the conveying surfaces of the carry-in and carry-out roller conveyors, are mounted on the mount board. And a clamp member for fixing the lower part is attached.

When the mounting carriage on which the pair of matched molds are placed is moved to the mold exchange position, first, the mold take-out member is moved to support the pair of molds supported on the supporting rollers of the molding section. After engaging this mold with the mold, the take-out member is moved back and taken out onto the carry-out roller conveyor, and then the push-out member locked to the pair of molds to be mounted next is moved to carry-in the roller conveyer. The pair of upper molds are transferred onto a support roller and fixed by a clamp member.

[0005]

However, in the above-mentioned conventional automatic die changing apparatus, the pushing member provided on the carry-in roller conveyor and the take-out member provided on the carry-out roller conveyor are controlled to move. The mounting position of the pair of molds with respect to the molding unit and the take-out position of the pair of molds with respect to the carry-out roller conveyor are positioned.

For this reason, it is necessary to provide the loading carriage with a push-out member and a take-out member whose movement can be controlled with high positional accuracy, which causes a problem that the cost of the apparatus itself increases.

The positioning of the mold with respect to the molding part is
The problem can be solved by mounting the positioning members on the fixed side and movable side mounting boards, respectively, but it has a problem that it is difficult to mount on the molding portion in a narrow space and the mounting board becomes heavy.

The present invention was invented in order to solve the above-mentioned conventional drawbacks, and an object thereof is to have an automatic molded product take-out machine integrally attached to an ordinary molding machine. Focusing on the above, a locking member is attached instead of the chuck part of the automatic molded product take-out machine, and by controlling the movement of this locking member, the mold to be taken out and the mold to be mounted can be mounted with high positional accuracy. An object of the present invention is to provide a method for automatically changing a mold in a molding machine that can be taken out.

Another object of the present invention is to provide a method for automatically changing molds in a molding machine which can reduce the cost of the automatic mold changing device.

[0010]

Therefore, according to the invention of claim 1, there is provided an automatic molded product take-out machine for taking out a molded product by moving the chuck portion in the front-rear direction, the left-right direction and the vertical direction above the molding portion. Support rollers and clamp members were attached to the fixed side mounting plate and the movable side mounting plate of the attached molding machine, respectively, and they were arranged so that they could move in the moving direction of the movable side mounting plate on the front side or back side of the molding machine. After mounting the loading device and the unloading device on the loading carriage in parallel so that they can be transported in a direction orthogonal to the moving direction of the movable side mounting board, and taking out the pair of molds mounted on the molding machine onto the unloading device, In the automatic die replacement method in which a pair of dies on the carry-in device are loaded and attached to the molding section, a locking member is attached to the chuck section of the automatic molded product take-out machine, and the locking member is supported by the molding section. Support roller of the forming part while locking and pulling out the locking member on a pair of molds placed on the rail and transferring it onto the carry-out device while locking the locking member to the pair of molds on the carry-in device and pushing it out. The feature is that it is transferred to the top and the dies are automatically replaced.

[0011]

Since the present invention is constructed as described above,
The loading cart is self-propelled and its unloading device is positioned at the molding section of the injection molding machine. In this state, the automatic molded product take-out machine is operated and the locking member attached to the chuck is locked to the pair of molds supported on the supporting rollers of the fixed side mounting plate and the movable side mounting plate to chuck the chuck. The pair of dies is transferred from the molding section to the unloading device by controlling the movement of the section.

Next, after the loading cart is self-propelled and its carrying-in device is located at the molding section, the chuck section of the automatic molded product take-out machine is controlled to move and locked to a pair of molds to be mounted. The locking member thus moved is moved and transferred and mounted on the supporting rollers of the fixed side mounting board and the movable side mounting board.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view showing the outline of the automatic die changing method.

FIG. 2 is a perspective view showing the facing surfaces of the fixed side and movable side mounting boards.

On the main body frame 3 of the injection molding machine 1, a fixed side mounting board 9 and a supporting board 6 which are opposed to each other with a predetermined interval.
Between the fixed side mounting board 9 and the support board 6, four tie bars 7 having an axis in the longitudinal direction of the main body frame 3 are mounted at diagonal positions.

An injection device 11 is attached to the main body frame 3 located on the fixed side attachment plate 9 side, and an injection screw (not shown) of the injection device 11 has a through hole (formed in the center of the fixed side attachment plate 9). (Not shown) is moved so that it can be inserted.

Further, a large number of support rollers 1 are provided on the fixed side mounting board 9 corresponding to slightly above the tie bar 7 located below.
3 is rotatably supported in a direction orthogonal to the axis of the tie bar 7.

Clamping devices 15 are attached to the fixed-side mounting board 9 corresponding to the space between the support rollers 13 and the fixed-side mounting board 9 facing the support roller 13 respectively.

The clamp device 15 includes a hydraulic cylinder portion 15a and an engaging claw portion 15b attached to the rod thereof.
The claw portion 15b is engaged with the die plates of the dies 53, 55, 57, 59 by the operation of the cylinder portion 15a.

Note that hooks 54 and 58 for locking a locking member 35 described later are attached to the side surfaces of the dies 53 and 57.

A movable side mounting board 17 is supported by each tie bar 7 so as to be movable in the axial direction, and a mold clamping cylinder 18 mounted on the body frame 3 is mounted on the movable side mounting board 17.
Are connected.

The movable side mounting board 17 facing the fixed side mounting board 9 has a large number of support rollers 19 and a clamp device 21.
Are attached so as to face the support roller 13 and the clamp device 15 of the fixed side attachment board 9.

On the upper part of the body frame 3 of the injection molding machine 1, an automatic molded product take-out device 23 is attached.

Body frame 2 of automatic molded product take-out machine 23
Reference numeral 5 is orthogonal to the axis of the tie bar 7 and is formed in a long shape extending from a molding portion of the injection molding machine 1 onto a mounting carriage 43 described later.

A first traveling body 27 is mounted on the body frame 25.
Is movably supported in the longitudinal direction, and a first drive member (not shown) is connected to the first traveling body 27.

A support frame 29 is attached to the first traveling body 27 so as to project in the axial direction of the tie bar 7.
The second traveling body 31 is movably supported on the support frame 29. A second drive member (not shown) is connected to the second traveling body 31.

The first and second drive members may be any of conventionally known cylinders, rack and pinion mechanisms, nuts and feed screw mechanisms, and the like.

A cylinder 33 as a vertical drive member is attached to the second traveling body, and a chuck attachment portion 34 is attached to the rod of the cylinder 33.

A chuck member (not shown) is normally attached to the chuck attachment portion 34 when the molded product is taken out, and an engaging member 35 is exchangeably attached when the die is replaced.

The locking member 35 is a hook portion 54, 5 attached to the side surface of one of the molds 53, 57 to be replaced.
8 is formed so as to be able to be locked to 8, for example, an inverted L-shaped.

The shape of the locking member 35 is not limited to the shape of this embodiment.

A pair of traveling rails 41 are arranged on the front floor of the injection molding machine 1 so as to extend in the axial direction of the tie bars 7.

A mounting carriage 43 is attached to the traveling rail 41 so as to be self-propelled in the longitudinal direction.

On the upper surface of the loading carriage 43, loading and unloading roller conveyors 45 and 47, which constitute a loading device and a unloading device, can be respectively transported in the direction orthogonal to the axis of the tie bar 7, and the support roller 13 is provided. -Mounted in parallel with 19 support surfaces.

Fixed side mounting board 9 and movable side mounting board 1
7, connecting rollers 49 and 51 are attached so as to coincide with the carrying surfaces of the carry-in and carry-out roller conveyors 45 and 47.

Next, an automatic die replacement method in the molding machine configured as described above will be described.

FIG. 3 is a schematic perspective view showing a state where the pair of molds is being taken out. FIG. 4 is a schematic perspective view showing a state where the pair of molds to be replaced is being carried in.

FIG. 5 is a front view showing a mounting state of one mold on the fixed side mounting board.

After the loading carriage 43 is self-propelled and the unloading roller conveyor 47 is positioned in front of the molding section of the injection molding machine 1, the clamp devices 15 and 21 are released from operation and fixed to the fixed side mounting board 9. The fixing of the mold 55 to the mold 53 and the movable side mounting board 17 is released.

At this time, the carry-out roller conveyor 47
And connecting roller 49.51 and supporting roller 13.1
9 and the conveyance surface are the same. Also, a pair of molds 53
55 is mounted on the support rollers 13 and 19 in a mold-matched state.

Next, in the above state, after the first traveling body 27 is moved to the front side of the pair of molds 53 and 55, the second traveling body 31 is moved and the cylinder 33 is actuated, and the locking member 35 is moved. Is locked to the pair of molds 53 and 55.

After the above operation, the first traveling body 27 is moved to the front side of the injection molding machine 1 and the pair of molds 53 and 55 placed on the supporting rollers 13 and 19 are placed on the carry-out roller conveyor 47. Transfer to and complete the removal.

At this time, the position control for the carry-out roller conveyor 47 from above the supporting rollers 13 and 19 is performed by the movement control of the first traveling body 27.

Next, in the above state, for example, the cylinder 33
The locking member 35 is moved upward by the returning movement of the pair to release the locked state with respect to the pair of molds 53 and 55.

Next, in the above state, the loading carriage 43 is self-propelled so that the carry-in roller conveyor 45 coincides with the molding section, and then the first traveling body 27 is moved to the front side of the injection molding machine 1. A pair of molds 57 that move and attempt to mount the locking member 35 by moving the cylinder 33 downward.
・ Lock at 59.

At this time, the carry-in roller conveyor 45
And connecting roller 49.51 and supporting roller 13.1
9 is the same as the transport surface.

In the above state, the first traveling body 27 is moved to the back side of the injection molding machine 1 and a pair of molds 57 to be mounted.
After moving 59 onto the support rollers 13 and 19, the clamp devices 15 and 21 are respectively actuated to move one die 57 to the fixed side mounting board 9 and the other die 59 to the movable side mounting board. Fix to 17 respectively.

At this time, the position control of the pair of molds 57 and 59 with respect to the fixed side mounting board 9 and the movable side mounting board 17 is performed by the movement control of the first traveling body 27.

Next, the locking member 35 is moved upward by the backward movement of the cylinder 33 to release the locking with the pair of molds 57 and 59.

As described above, according to this embodiment, the pair of molds 53 and 55 to be taken out and the pair of molds 57 to be mounted are to be taken out by using the automatic molded product take-out machine 23 integrally attached to the injection molding machine 1. -It is possible to move 59 to a predetermined position for replacement work.

At that time, the pair of molds 53 to be taken out
55, and the pair of molds 57 and 59 to be mounted are positioned by the movement control of the first traveling body 27, so that the push-out member mounted on the mounting carriage 43 as in the conventional mold automatic exchanging device. Further, it is not necessary to control the position of the take-out member with high accuracy, and the configuration of the mounting carriage 43 can be simplified.

[0053]

For this reason, the present invention focuses on the fact that an automatic molded product take-out machine is integrally attached to a normal molding machine, and the metal to be taken out by the movement control of the chuck portion of the automatic molded product take-out machine. It is possible to provide an automatic die change system in a molding machine that can attach and remove the die and the die to be attached with high position accuracy.

Further, the present invention can provide an automatic die change system in a molding machine which can reduce the cost of the automatic die change apparatus.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an outline of an automatic die replacement method.

FIG. 2 is a perspective view showing facing surfaces of a fixed side and a movable side mounting board.

FIG. 3 is a schematic perspective view showing a state where a pair of molds is being taken out.

FIG. 4 is a schematic perspective view showing a process of mounting a pair of molds to be replaced.

FIG. 5 is a front view showing a mounting state of one mold on a fixed side mounting board. 1: Injection molding machine 9: Fixed side mounting board 13/15: Support roller 15/21: Clamp member 17: Movable side mounting board 23: Automatic molded product takeout machine 35: Locking member 53/55: A pair of trying to take out Mold 57/59: A pair of molds to be mounted

Claims (2)

[Claims] 1. A chuck portion is provided in a front-back direction above a molding portion,
Remove the molded product by moving it to the left and right and up and down. Attach the supporting roller and the clamp member to the fixed side mounting plate and the movable side mounting plate of the molding machine equipped with the automatic molded product take-out machine. The loading device and the unloading device are mounted in parallel on the rear side so that the loading carriage and the unloading equipment can be transported in the direction orthogonal to the moving direction of the movable side mounting board, on the mounting carriage that is arranged to be self-propelled in the moving direction of the movable side mounting board. In the automatic die replacement method, in which the pair of dies mounted on the molding machine are taken out to the unloading device, and then the pair of dies on the loading device are loaded into the molding part and attached The locking member is attached to the, and the locking member is locked onto a pair of molds placed on the supporting roller of the molding section and transferred to the carry-out device while being pulled out and the locking member is carried. Automatic die-exchange method in a molding machine, characterized in that engaged with the pair of molds on the device is transferred onto the support rollers of the forming unit while extrusion for automatically changing the mold. 2. A pair of dies that are moved from the molding section to the unloading member and a pair of dies to be mounted that are loaded from the loading section are positioned in the molding section by controlling the movement of the chuck section in the automatic unloading machine. A method for automatically changing a mold in a molding machine according to claim 1, which is made possible.