JP2960352B2 - Mold changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold exchanging apparatus, and more particularly, to a hose pipe serving as a path for a fluid for preheating and temperature adjustment of a mold, or a pneumatic and hydraulic hose pipe for driving an actuator provided with a mold. The present invention relates to a mold exchanging device to which piping such as electric wiring of a sensor attached to a mold is connected.

[0002]

2. Description of the Related Art Conventionally, injection molding machines and presses for molding and processing products using dies are provided with various dies in advance in order to produce a wide variety of products with a single facility. According to the production process, the mold is exchanged appropriately. For example, in a horizontal injection molding machine, which is often used for molding plastic products, mold exchange is performed by using a crane to carry out the mold in the mold mounting section between the fixed board and the movable board, and then to the next mold (the next mold). The work of carrying in is frequently performed. In such a mold exchanging operation, the crane operation when the weight of the mold reaches several tens tons is not only extremely dangerous, but also has a problem that the mold exchanging is not performed quickly. In addition, there are secondary problems such as limitations on the use time of the crane equipment, maintenance management, and securing of operators.

In order to solve such a problem, as disclosed in JP-A-61-11730 and JP-B-62-29124, a side view of an injection molding machine and a front-back direction of a press machine are used. Therefore, an increasing number of producers have provided a so-called mold exchanging device as an attached facility for exchanging a mold by horizontally moving a mold using a roller conveyor or the like in a mold mounting portion in the machine.

On the other hand, a mold used for injection molding or the like depends on the precision of the molded product, but in the case of a precision molded product such as a camera part or a VTR cassette, for example, an error of ± 1 with respect to a mold temperature of 100 ° C. It must be controlled with high accuracy of ° C.
Therefore, generally, a mold is provided with a hot water supply and discharge port for temperature adjustment (temperature adjustment), and is connected to a predetermined temperature adjustment device by a flexible hose or the like. Normally, at the time of mold replacement, the next mold is preheated (preheated) to a predetermined temperature on a mold preheating table or a mold changing device, and a device for quickly restarting the operation of the injection molding machine after the mold change is made. ing. However, since the hot water piping system on the mold preheating table and the hot water piping system in the molding machine are usually provided as separate systems, disconnection and connection of the temperature control piping inevitably occur when replacing the mold. There has been a problem that the temperature decreases and the temperature reaches a predetermined temperature, which delays the operation rate of the molding machine.

Depending on the type of the mold, there are a mold having an actuator in the core and a sensor having a sensor for monitoring a molding state and the like. In such a mold, in addition to the temperature control piping, It is necessary to connect piping such as pneumatic pressure and hydraulic pressure, and electrical wiring, and when replacing the mold as described above, it is necessary to disconnect and connect all the piping and wiring connected to the mold.

The disconnection and connection of such preheating, temperature control piping, pneumatic and hydraulic piping and electric wiring are generally performed manually by an operator or by an automatic detachable coupler. Performing disconnection and connection of all pipes and wires is extremely complicated and reduces the work efficiency. In addition, automatic detachable couplers are extremely expensive because special technology is frequently used to make high-precision and reliable close contact connection, and it is necessary to process and attach coupler parts to all molds Therefore, there was a heavy burden in terms of equipment costs and mold management.

By the way, the preparation of the movement of the mold and the preheating are usually carried out as a pre-setup during the operation of the molding machine. Therefore, from the viewpoint of the operation rate (productivity) of the molding machine, the temperature control piping and the electric wiring are required. There is no problem even if the connection work such as the above is performed by an automatic detachable coupler or manually by an operator. In addition, the number of dies tends to increase with the increase in high-mix low-volume products in recent years, and it is not possible to attach automatic detachable couplers to all newly introduced dies.
There was a problem that the burden became large in terms of equipment costs.

[0008]

In order to solve the above-mentioned problem, a flexible hose for temperature control is connected to a mold exchanging device attached to a molding machine to preheat the mold. A technique for exchanging a mold while connecting a hose and operating a molding machine is disclosed in, for example, Japanese Patent Publication No. 1-48848.
And JP-A-6-64000. In such a conventional technique, a flexible hose is extended from a carrier provided at the end of a rigid collecting pipe or a chain with rollers and connected to a mold. There have been problems in that the hose sometimes bends or twists, or that the hose is damaged by contact with the hoses or peripheral members.

An object of the present invention is to solve such a problem and eliminate the need to attach an automatic detachable coupler to each mold, and to provide a temperature control pipe, pneumatic and hydraulic pipes, and electric wiring to the mold. Connection can be made on the mold mounting surface of the mold changer, and the mold can be replaced as it is, and when the mold is changed to an injection molding machine or a press machine, or when the pipe is bent, twisted or damaged due to contact during operation It is an object of the present invention to provide a mold exchanging apparatus which does not have any problem.

The machine to which the present invention is applied is a horizontal type machine.
Not only vertical injection molding machines, press machines, die casting machines, etc., but also machines that mold and process products using dies, especially temperature control, such as molding dies and press dies, The present invention can be effectively applied when it is necessary to control and monitor a mold during molding or processing, such as drive control of a core actuator and monitoring of a processing state. For convenience of explanation, a machine that performs molding and processing using a mold, which is the object of the present invention, is simply referred to as “molding machine”, and the molding and processing state of the molding machine is “operating” state. The temperature control piping, pneumatic and hydraulic piping, electric wiring, etc., which are directly connected to the mold, are referred to as “piping”.

[0011]

In order to achieve the above object, the present invention is directed to a mold which is detachably mounted on a mold mounting portion comprising a fixed plate and a movable plate of a molding machine. In the mold exchanging device which carries out the mold to the mold mounting surface and exchanges the mold by carrying in a predetermined mold to the mold mounting portion, one end is connected to the fixed plate side of the mold. A fixed-side pipe holding unit that holds the other end of the flexible pipe and moves in synchronization while maintaining the same position relative to the mold when exchanging the mold, and a movable plate of the mold. Holding the other end of the flexible pipe, one end of which is connected to the side, and moving the mold synchronously while maintaining the same position relative to the mold when exchanging the mold; In operation, while maintaining the same position relative to the movable platen, Have a movable side pipe holding unit to move Te
And moving the movable-side pipe holding portion to the movable position of the molding machine.
It is held and fixed on the board, and before the molding machine is operated,
The movable platen is configured to move integrally with the movable platen.
For connecting to the movable platen of the machine tool,
A connecting portion is provided, and the connecting portion is connected to the movable side pipe holding portion from the movable side pipe holding portion.
A cover extending in the moving direction of the movable plate and integrally formed.
It is characterized in that it is fixedly connected to the connection part .

According to a second aspect of the present invention, there is provided a mold having a plurality of mold mounting surfaces, the mold being removably attached to a mold attaching portion comprising a fixed plate and a movable plate of a molding machine. In a mold exchanging apparatus for exchanging a mold by carrying out a predetermined mold on another mold mounting surface to the mold mounting portion while carrying out the mold to the mold mounting surface, the mold fixing plate Holding the other end of the flexible pipe with one end connected to the side,
And a fixed-side pipe holding portion that moves synchronously while maintaining the same position relative to the mold when exchanging the mold, and a flexible pipe having one end connected to the movable platen side of the mold. While holding the other end of the mold and, during the mold exchange, while moving in synchronization while maintaining the same position relative to the mold, and at the time of operation of the molding machine, relative to the movable platen. while maintaining the same position, have a movable side pipe holding unit to move synchronously, the movable-side pipe holding portion, the molding machine
To the movable platen when the molding machine is in operation.
And configured to move integrally with the movable platen,
Connected to the movable platen side pipe holding part on the movable platen of the molding machine
A connecting portion that is connected to the movable side pipe holding portion.
Extending in the direction of movement of the movable plate from the
It is characterized by being fixedly connected to the connected part .

[0013] The invention according to claim 3 is a molding machine.
Detachable to the mold mounting part consisting of the fixed plate and movable plate of the machine
To take out a mold that has been attached to the mold mounting surface
In particular, a predetermined mold is carried into the mold mounting portion.
In a mold exchanging apparatus for exchanging dies further,
Hold the other end of the flexible piping, one end of which is connected to the fixed platen side of the mold.
When replacing the mold, and relative to the mold.
Fixed side piping holder that moves synchronously while maintaining its position
And a flexible pipe having one end connected to the movable platen side of the mold.
The other end of the mold, and when exchanging the mold, the mold
It moves synchronously while maintaining the same position relatively
At the time of operation of the molding machine,
Moving side piping that moves synchronously while maintaining the same position
And a holding section, wherein the movable-side pipe holding section is
It is held and fixed on the movable platen of
In operation, it is configured to move integrally with the movable plate
Then, the movable platen-side pipe holding portion is movable by the molding machine.
A connecting part for connecting to the board is provided, and the connecting part is
Extending in the moving direction of the movable platen from the movable platen of OMRON will and one
It is characterized by being fixedly connected to a non-connection part formed physically
Mold changing equipment.

Further, according to a fourth aspect of the present invention, there are provided a plurality of molds.
With a mounting surface, from the fixed platen and movable platen of the molding machine
Mold that is removably attached to the mold
To the mold mounting surface of the
A predetermined mold is carried into the mold mounting section,
In a mold exchanging apparatus for exchanging molds, the mold is fixed.
Hold the other end of the flexible pipe, one end of which is connected to the platen side,
And when replacing the mold, the same position relative to the mold
The fixed side piping holding part that moves synchronously while holding
The other end of the flexible pipe whose one end is connected to the movable platen side of the mold
And, when exchanging the mold, relative to the mold
While keeping the same position,
When operating the molding machine, it is relatively the same as the movable platen.
Movable piping holder that moves synchronously while maintaining its position
And the movable side pipe holding section is formed by the molding machine
To the movable platen when the molding machine is in operation.
The movable platen is configured to move integrally with the movable platen, and the movable platen-side pipe holding portion is provided with a connection portion that is connected to the movable platen of the molding machine. And extending in the moving direction of the movable plate, and being connected and fixed to a non-connection portion formed integrally.

According to the first and third aspects of the present invention, when the mold is replaced, the fixed-side and movable-side pipe holding portions for holding the temperature control pipes, electric wires, and the like connected to the mold are provided in the mold. The movable side pipe holding part moves in synchronization with the operation of the movable platen when the molding machine is operating, so that the pipe connected to the mold does not have to be disconnected and connected. Since it is possible to carry in and out of the molding machine and to prevent twisting or bending of the piping, damage to the piping can be suppressed. In addition,
Even during operation, the movable side piping operates according to the movable platen
To prevent slack and torsion of pipes and contact with surrounding members.
Damage due to the above can be suppressed.

[0016] On the other hand, in the invention of claim 2, 4, wherein in the mold exchange device having a plurality of die mounting surface, it is possible to perform the preheating of the following type on the die mounting surface, also connected to the mold Can be carried into and out of the molding machine without disconnecting and connecting the pipes that have been set, so that the next mold can be quickly carried in after the unloading of the mold from the molding machine, and the operating rate of the molding machine is reduced. Can be improved, and since the pipe does not twist or bend, damage to the pipe can be suppressed.

Further , in the present invention, when the molding machine is operated, the movable-side pipe holding portion is held and fixed to the movable plate and moves integrally, so that the movable-side pipe is further prevented from being damaged by torsion or bending. be able to.

According to the present invention, the connecting portions provided on the movable pipe holding portion and the movable plate of the forming machine, and the connected portions extending in the moving direction of the movable plate (thickness direction). Can be connected and fixed during the operation of the molding machine, so that it can be applied to mold exchange even in molds with different mold thicknesses, and torsion of the movable side piping. Damage due to bending or bending can be suppressed.

The movable side pipe holding section is fixed to the fixed side.
Mounting extending from the side pipe holding part and integrally formed
Placed on the part, the mounting part, when replacing the mold, the
Move synchronously while maintaining the same position relative to the mold
With this configuration, the fixed side and
And the movable side pipe holding section are integrated in synchronization with the loading and unloading of the mold.
To move the pipe holding part to the mold.
Easy to synchronize with loading and unloading, due to pipe twisting and bending
Damage may be further suppressed.
Also, a plurality of drive rollers are arranged on the mold mounting surface,
At least the drive roller is used to apply the mold to the molding process.
By being designed to carry in and out
When the mold is changed, the mold is formed by the drive roller.
Carrying in and out of the machine, even for newly introduced molds,
For mounting of automatic detachable couplers and carrier hook receiving brackets, etc.
No mold processing is required, mold exchange, mold temperature control,
So that it can be quickly applied to the operation of machine tools
Is also good.

[0020]

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

FIG. 1 shows a first embodiment of a mold changing apparatus according to the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows an Example and is a figure explaining the basic principle of this invention.

In FIG. 1A, reference numeral 1 denotes, for example, a mold for an injection molding machine (hereinafter, simply referred to as a mold), and 1a denotes a mold on a fixed platen side of the injection molding machine (hereinafter, a fixed side mold). Reference numeral 1b denotes a movable plate side mold (hereinafter, referred to as a movable mold). Reference numeral 2a denotes a fixed-panel-side mold pipe having one end connected to the fixed-side mold (hereinafter, referred to as fixed-side pipe), and 2b denotes a movable-panel-side mold pipe having one end connected to the movable-side mold. , Movable side piping), and warm water for preheating and controlling the temperature of the mold, working fluid for an actuator provided in the core of the mold, or electric wiring of a sensor provided in the mold. Is a flexible hose pipe which is a path for the hose. Further, 3a is a fixed-side pipe holding portion for holding and fixing the other end of the fixed-side pipe having one end connected to the fixed-side mold, and 3b is the other end of the movable-side pipe having one end connected to the movable-side mold. A movable-side pipe holding section for holding and fixing each of the pipe holding sections 3
Reference numerals a and 3b are connected to a heating temperature controller, a hydraulic pressure generator, an electric control panel, or the like, not shown. A flexible hose pipe is used for the connection path from each of the pipe holding sections 3a and 3b to the heating temperature controller and the like as in the above-described pipe, and each pipe is connected so as not to cause damage due to twisting, bending, contact, or the like. While separating and aligning, giving a predetermined bending radius,
One end is a fixed end, and the other end is a movable end. As such a protective device for moving piping, for example, a cable carrier made by Tsubakimoto Chain or the like can be applied. The fixed-side pipe holder 3a and the movable-side pipe holder 3b are provided integrally with the fixed-side movable frame 4a and the movable-side movable frame 4b, respectively. The holding unit 3b is mounted on, for example, the same mold mounting surface (hereinafter, referred to as a mold stage) 11 of the mold changing apparatus 10. The mold stage 11 has a moving device for carrying the mold 1 in and out of a horizontal injection molding machine (not shown), and moves the mold 1 in the direction of arrow A1 to carry the mold 1 in and out of the injection molding machine. The fixed-side pipe holding portion 3a and the movable-side pipe holding portion 3b are moved by the moving device of the mold stage 11 or independently, thereby synchronizing with the carry-in / out operation of the mold 1, the arrow Aa in the same direction as the arrow A1. And move in the Ab direction.

Here, synchronizing means moving the mold 1 at the same speed (arrow A1) as the movement of the mold 1 (arrow A1) without changing the relative distance (position) from the mold 1 as being substantially the same. Aa, Ab). That is, the mold 1, the fixed-side pipe holding part 3a, and the movable-side pipe holding part 3b
Fixed side pipe 2a and movable side pipe 2 connected to mold 1
b moves in a positional relationship and a speed relationship in which bending and twisting do not occur.

Next, after the mold 1 is carried into the injection molding machine, the fixed mold 1a and the movable mold 1b are clamped and fixed to the fixed plate and the movable plate, respectively. Then Figure 1
In (b), when the movable plate of the injection molding machine (not shown) moves in the direction of arrow A2, the movable mold 1b separates from the fixed plate mold 1a, and the mold is opened. The movable side movable base 4b on which the holding unit 3b is installed moves in the direction of the arrow Ac in synchronization with the movable platen. Further, the fixed-side pipe holding portion 3a and the fixed-side movable gantry 4a are fixed at predetermined stop positions.

Here, as a mechanism for moving the movable-side pipe holding section 3b in synchronization with the movable platen of the injection molding machine, the movable-side moving base 4b on which the movable-side pipe holding section 3b is installed is provided by a movable base 4b from the injection molding machine. Moving alone by synchronizing with the operation of the movable platen (movable mold 1b) based on the operation signal of the movable platen of the movable platen, or movable side piping by a connection mechanism provided on the side of the movable platen as described later A configuration or the like for connecting and fixing to the holding portion 3b or the movable-side movable gantry 4b can be considered.

According to the present invention, a temperature control pipe or the like is connected to the mold 1 on the mold stage 11 of the mold exchanging apparatus 10 as a pre-setup during the operation of the injection molding machine. Since it is possible to carry in and out the injection molding machine while the pipes are connected, it is possible to realize a quick and inexpensive mold changing device, and at the time of operation of the injection molding machine, the movable side pipe holding portion 3b It operates in synchronization with the movable platen,
In order to keep the relative positional relationship between the movable mold 1b and the movable pipe holding part 3b constant, it is possible to operate the injection molding machine without causing damage due to bending, twisting, contact and the like of the movable pipe 2b. State can be realized.

Since the molding machine usually has only one temperature control piping system, the temperature control piping system is switched between the time of preheating on the mold changing apparatus and the time of temperature control in the injection molding machine.

Next, the layout of the auxiliary devices around the injection molding machine to which the above-described mold exchanging device is applied is shown in FIG.
FIG.

In FIG. 2A, a mold changing device 10 is provided on one side of the injection molding machine 20 and, for example, switches between two mold stages, an A stage 11a and a B stage 11b when changing the mold. It is equipped with a moving exchange cart (moving platform). Also, each mold stage 11a,
A mold and a pipe holding unit are placed on 11b as shown in FIG.

The mold exchanging operation in such an apparatus layout will be described. First, the mold 1X in the injection molding machine 20 is carried out to the A-stage 11a in the direction of arrow A1, and then the exchange carriage is moved in the direction of arrow A3. The mold stage at the mold changing position is changed from the A stage 11a to the B stage 11b.
Switch to. At this time, the fixed-side and movable-side pipe holding parts 3a, 3b move in synchronization with the molds 1X, 1Y. Next, the mold 1Y, which has been preheated on the B station 11b, is carried into the injection molding machine 20, and at this time, the fixed-side and movable-side pipe holding parts 3a, 3b move in synchronization with the mold 1Y. Next, the injection molding machine 20 is operated, and FIG.
As shown in (b), the movable-side pipe holding unit 3b moves in synchronization with the operation of the movable plate.

In the apparatus layout shown in FIG. 2B, a mold changing apparatus 10 is provided as a fixed base on both sides of the injection molding machine, and has two mold stages, an A stage 11a and a B stage 11b. Alternately carry in and out the mold. Also, each mold stage 11a, 11b has
As shown in FIG. 1A, the mold and the pipe holding unit are placed.

The mold exchanging operation in such an apparatus layout will be described. First, the mold 1X in the injection molding machine 20 is carried out to the A stage 11a. At this time, the fixed-side and movable-side pipe holding portions 3a and 3b move in synchronization with the mold 1X. Next, the mold 1Y, which has been preheated on the B stage 11b, is carried into the injection molding machine 20, and also at this time, the fixed-side and movable-side pipe holders 3a, 3b move in synchronization with the mold 1Y. Next, the injection molding machine 20 is brought into an operating state, and the movable-side pipe holding unit 3b moves in synchronization with the operation of the movable platen as shown in FIG.

In any case, the connection of the temperature control pipes to the mold is performed as a pre-setup during the operation of the injection molding machine, and the detachment of the temperature control pipes from the mold is performed after the mold replacement. Since it is performed as a post-setup, there is no need to attach or detach a temperature control pipe or the like when exchanging the mold. Therefore, it is not necessary to process and attach an automatic detachable coupler for preheating and temperature control to all the dies, and it is possible to reduce the equipment cost and the management of the dies, to quickly change the dies and to perform good injection molding. The operating state of the machine can be realized.

Next, a second embodiment of the mold changing apparatus according to the present invention is shown in FIGS. Here, FIGS. 3 and 4
In the following, description of the same configuration as that of FIG. 1 will be omitted.

In FIG. 3, the fixed platen 2 of the injection molding machine 20
A transport roller 22 is installed on the movable platen 1a and the movable platen 21b, and supports the fixed mold 1a and the movable mold 1b to carry the mold 1 into and out of the injection molding machine 20, respectively. Convey 1. On the side of the movable platen 21b, there is provided a connection mechanism with the movable-side piping holding portion 3b, for example, a piping holding portion chuck 23 for holding the movable-side movable base 4b provided with the movable-side piping holding portion 3b by a hydraulic cylinder. . On the other hand, on the mold stage 11, the mold 1 to which one ends of the fixed side and movable side pipes 2a and 2b are connected, and the fixed side and movable side which hold the other ends of the fixed side and movable side pipes 2a and 2b. The pipe holding parts 3a and 3b are placed apart from each other. A movable-side movable base 4b integrally provided with a movable-side pipe holder 3b is removably mounted on a fixed-side movable base 4a integrally provided with a fixed-side piping holder 3a. The movable frame 4b is provided with a connection frame 5 extending in the moving direction of the movable platen 21b of the injection molding machine 20, that is, in the thickness direction of the mold 1. The connection frame 5 has a substantially T-shaped cross section, is provided so as to protrude from the movable side movable base 4b, and is gripped and fixed by a pipe holding portion chuck 23 provided on a movable platen 21b of the injection molding machine 20.

The loading operation of the mold 1 in such a configuration will be described. The mold 1 'is moved onto a predetermined mold stage 11b of the mold changing apparatus 10 as a pre-setup when the injection molding machine 20 is operated. Then, the worker manually connects the temperature control piping and the like. Next, the operation state of the injection molding machine 20 is stopped, and the mold exchanging operation is started. First, the mold in the injection molding machine 20 is carried out to the mold stage 11a, and the mold stage 11b on which the mold 1 'is mounted is moved in the direction of arrow A3 to switch to the mold exchange position. Next, the fixed-side movable base 4a on which the mold 1 'and the movable-side movable base 4b are mounted.
Is moved in the direction of arrow A1, and the mold 1 'is moved to the injection molding machine 20.
It is carried in while being supported by the transport roller 22 in the inside. In this case, the above
As described in the above embodiment, the fixed-side movable gantry 4
a moves in the direction of arrow A1 in synchronization with the transport speed of the mold 1 'while maintaining the same position relative to the mold 1'. Next, the fixed board 21a and the movable board 21b of the injection molding machine 20
The fixed side and the movable side of the mold 1 ′ are respectively clamped and fixed, and the pipe holding part chuck 23 provided on the movable plate 21 b grips and fixes the movable side movable base 4 b provided with the movable side pipe holding part 3 b. Together with the fixed-side movable mount 4
Depart from a. When such a mold exchanging operation is completed, the hot water piping system to the mold 1 'is switched from the mold exchanging apparatus 10 side to the injection molding machine 20 side.

Subsequently, as shown in FIG.
Is in the operating state, the movable side pipe holding portion 3b gripped and fixed by the pipe holding portion chuck 23 is moved to the movable plate 21b.
Move in the direction of arrow A2. Here, the stop position of the fixed-side movable base 4a may be on the mold stage 11b of the mold changing apparatus 20 or on an intermediate fixed base attached to the injection molding machine 20 (not shown). ,
In any case, any configuration may be used as long as the stop position of the fixed-side pipe holding unit 3a is fixed in the operating state of the injection molding machine 20.

According to this embodiment, when the molds are replaced, the molds 1 and 1 'can be carried in and out of the injection molding machine 20 while the temperature control pipes and the like are connected. A mold change operation can be performed. In addition, since the positional relationship between the dies 1, 1 'and the fixed-side and movable-side pipe holding parts 3a, 3b does not change when the mold is replaced and when the injection molding machine is operated, the fixed-side and movable-side pipes 2a, 2b are not changed. Neither twisting or bending of any of the pipes nor contact with peripheral members occurs, and a mold changing operation and an operating state of the injection molding machine in which damage to the pipes is suppressed can be realized.

Next, the movable plate 21b in the present embodiment,
The connection mechanism with the movable-side pipe holding unit 3b or the movable-side movable base 4b will be described in more detail.

First, a specific configuration example of the pipe holding portion chuck 23 shown in the embodiment is shown in FIGS.

Next, FIG. 6 shows a specific configuration example of the chuck 23D.

A pair of gripping claws 31 for holding and fixing the connection frame 5 protruding from the movable side movable base 4b shown in FIG.
Are individually pushed and pulled by hydraulic cylinders 32 fixed to a chuck base 33 to perform opening and closing operations. In order to synchronize the opening and closing operations of the opposing gripping claws 31, each of the gripping claws 31 connects and fixes a slide shaft 34 on which a rack gear has been machined, and slides the slide shaft 34 from the other gripping claw 31 so as to penetrate. A rack gear formed on each slide shaft 34 meshes with a synchronous gear 35 provided on the chuck base 33.

The pipe holding portion chuck 23 having such a configuration is used.
In the following, a description will be given, with reference to the flowchart of FIG. 7, of the connection and detachment operations of the mold with respect to the connection frame 5 provided on the movable-side movable base 4b when loading and unloading the mold.

At the time of loading the mold, as shown in FIG.
Is required to be in the “up” position and the chuck 23D is in the “open” state, that is, not holding the connection frame 5 (SA10). Under such initial conditions, when loading of the mold is completed (SA11), the chuck mounting arm 23C is lowered (SA12), and then the chuck 23D is closed to hold and fix the connection frame 5 (S11).
A13). Next, the chuck mounting arm 23C is raised again, and the movable-side movable gantry 4b is separated from the fixed-side movable gantry 4a (SA14), and the connection operation is completed (SA15).
Here, the lifting position holding pin of the chuck mounting arm 23C is pushed out by the above-described pneumatic cylinder 23F at the “up” position, and the “up” position is held.

At the time of unloading the mold, as shown in FIG. 7B, as initial conditions, at least the chuck mounting arm 23C is at the "up" position and the chuck 23D is in the "closed" state, that is, the connection frame 5 Is required (SB10). Under such initial conditions, the chuck mounting arm 23C descends (SB11), and then the chuck 23D opens to release and release the connection frame 5 (SB12). Next, the chuck mounting arm 23C is raised again (SB13), the movable-side movable gantry 4b is placed on the fixed-side movable gantry 4a, and the detaching operation ends (SB14). Next, the fixed-side movable gantry 4a moves in synchronization with the unloading of the mold (SB15). Here, as in the case of loading the mold, the lifting position holding pin of the chuck mounting arm 23C is pushed out by the above-described pneumatic cylinder 23F at the "up" position, and the "up" position is held.

As described above, the movable platen 21 of the injection molding machine 20
A mechanism (hydraulic cylinder 23E) for raising and lowering the pipe holding part chuck 23 and a mechanism (pneumatic cylinder 23F) for holding the raised position of the pipe holding part chuck are used as a connection mechanism between the b and the movable side pipe holding part 3b. If it is provided, a good attachment / detachment operation can be performed.

Next, the connection frame 5 protruding from the movable side movable base 4b will be described with reference to FIG.

As described above, the connection frame 5 is provided on the movable movable base 4b so as to extend in the moving direction of the movable platen 21b of the injection molding machine 20, that is, in the thickness direction of the mold 1. Therefore, as shown in FIG.
1 is replaced, the pipe holding chuck 23 is replaced.
Is the connection frame 5 at the position of the dimension L1 from the fixed board 21a.
And fix it. Further, as shown in FIG. 8B, when the mold having the mold thickness dimension F2 (<F1) is replaced, the pipe holding chuck 23 has the dimension L2 closer to the fixed board 21a than the dimension L1 from the fixed board 21a. The connection frame 5 at the position is gripped and fixed.

As described above, since the connection frame 5 is provided extending in the mold thickness direction, the pipe holding portion chuck 23 is fixed to the fixed plate 21 regardless of the size of the mold thickness (F1, F2).
The connection frame 5 at the position (L1, L2) from the position a can be securely gripped and fixed. Further, the cross section of the connection frame 5 is not limited to a substantially T-shape, and may have another cross-sectional shape as long as it can be gripped, fixed, released, and released when connected to and detached from the movable platen. Needless to say.

In this embodiment, the chuck driven by hydraulic pressure is shown as the connection mechanism. However, the present invention is not limited to this. For example, a configuration using a magnet chuck or the like may be used.

The moving part of the mold stage 11 of the mold exchanging apparatus 20, the moving part of the fixed and movable side pipe holding parts 3a and 3b accompanying the loading and unloading of the mold, the movable platen 21b
The moving part of the movable side pipe holding part 3b that operates integrally with the
Connected by flexible hose pipes, each pipe should not be damaged by twisting, bending, contact, etc.
For example, it is configured to be separated, aligned and moved by the above-described hose support or the like.

Next, a third embodiment of the die changing apparatus according to the present invention will be described with reference to FIG.

[0053] This example, in the configuration described in the above embodiment, the chuck portion 23 'is provided in the movable-side pipe holding portion 3b side, connection frame 5' as shown in FIG. 9 is provided on the movable platen 21b side It is characterized by being.

That is, a chuck portion 23 'is provided so as to protrude at a predetermined position of the movable side moving base 4b integrally provided with the movable side pipe holding portion 3b. On the other hand, on the side surface of the movable plate 21b of the injection molding machine 20, a connection frame 5 'extending in the moving direction of the movable plate 21b, that is, the thickness direction of the mold.
Is provided so as to be able to move up and down.

Therefore, as shown in FIG. 10A, when the mold having the mold thickness F1 is replaced, the chuck 2
3 'grips and fixes the connection frame 5' at the position of the dimension L3 from the movable board 21b. Further, as shown in FIG. 10 (b), when the mold having the mold thickness dimension F2 (<F1) is replaced, the chuck portion 23 'is connected to the connection frame at the position of the dimension L4 farther than the dimension L3 from the movable plate 21b. Hold 5 'and fix.

As described above, since the connection frame 5 'is provided extending in the mold thickness direction, the mold thickness dimensions (F1, F2)
Regardless of the size, the chuck portion 23 'can securely hold and fix the connection frame 5' at the position (L3, L4) from the movable plate 21b. With reference to the flowchart of FIG. 11, a description will be given, with reference to the flowchart of FIG.

At the time of loading the mold, as shown in FIG. 11A, as initial conditions, at least the connection frame 5 'is in the "down" position and the chuck portion 23' is in the "open" state.
That is, a condition that the connection frame 5 'is not gripped is required (SA20). Under such initial conditions, when the loading of the mold is completed (SA21), the chuck portion 23 'is closed to grip and fix the connection frame 5' (SA).
22) Then, the connection frame 5 'is raised again, and the movable-side movable gantry 4b is separated from the fixed-side movable gantry 4a (SA).
23), the connection operation ends (SA24). Here, the connection frame 5 'is pushed up by the pneumatic cylinder or the like at the "up" position, and the "up" position is held.

At the time of unloading the mold, as shown in FIG. 11B, as initial conditions, at least at least the connection frame 5 'is in the "up" position and the chuck 2
A condition is required that 3 'is in the "closed" state, that is, the connection frame 5' is gripped (SB20). Under such initial conditions, the connection frame 5 'descends (SB
21) Then, when the chuck portion 23 'is opened (SB2)
2), the connection frame 5 'is detached and released, the movable-side movable platform 4b is placed on the fixed-side movable platform 4a, and the detaching operation is completed (SB23). Next, the fixed-side movable base 4a moves in synchronization with the unloading of the mold (SB24). here,
As in the case of loading the mold, the connection frame 5 'is pushed up by the pneumatic cylinder or the like at the "up" position, and the up position holding pin is pushed out.
The "up" position is maintained.

According to this embodiment, similar to the above-described embodiment,
The movable-side pipe holding portion 3b can be integrally fixed to the movable platen 21b of the injection molding machine 20 corresponding to a mold having a different mold thickness. In addition, the present invention can be favorably applied to mold replacement without performing special processing or operation on pipe connection, and can suppress damage due to twisting, bending, contact, and the like of the movable-side pipe.

Next, the fourth embodiment of the mold changing apparatus according to the present invention will be described.
An example will be described.

Generally, as a mechanism for carrying a mold into and out of an injection molding machine in a mold exchanging apparatus, a system using a push-pull device using a carrier hook or a driving roller, or an actuator such as pneumatic, hydraulic, or ball screw is used. Methods are known. In the present invention, these mechanisms can be used singly or in combination as appropriate. In particular, the present embodiment is characterized in that at least the loading / unloading operation of the mold is performed by a driving roller. That is, the mold is carried in and out by arranging drive rollers in the mold stage and the injection molding machine. Therefore, unlike the case where a carrier hook or the like is used, there is no need to process and attach the hook receiving fitting to the mold.

According to such a configuration, in addition to the advantage of not requiring the processing and mounting of the automatic detachable coupler which is a feature of the present invention, the processing of the mold replacement parts such as the receiving fitting fitted to the carrier hook. Since installation is not required, a newly introduced mold can be directly applied to the mold changing apparatus of the present invention.

If the mold is carried in and out by the drive roller method, and the fixed and movable pipe holding sections are moved in the carry-in and out direction by the carrier hooks, the work to the mold is performed in the same manner as described above. It is possible to provide a movable gantry having a shape that is not required and is not restricted by the arrangement of the driving rollers and the like, and to provide a movable gantry capable of controlling the operation independently of loading and unloading of the mold.

[0064] While there has been described by showing an actual施例, as a method for switching the position of the mold stage for the injection molding machine position, known changing carriage (moving base) scheme, the transport roller in the direction perpendicular to the fixed base Can be adopted. In any method, a mechanism that satisfies the condition that the mold and the fixed and movable-side pipe holding portions, which are the features of the present invention, move synchronously while maintaining a substantially constant positional relationship is used. Not even. Although the mold exchanging apparatus having two mold stages is shown for convenience of explanation, the present invention may be applied to a mold exchanging apparatus having a mold stage having three or more surfaces. Needless to say.

[0065]

As described above, there is no need to attach an automatic detachable coupler to each mold, and the mold can be exchanged while the temperature control piping and the like are connected to the mold, and the molding process can be performed. It is possible to provide a mold changing device that does not cause damage due to bending, twisting, contact with peripheral members, and the like even when the machine is operating.

In particular, according to the first and second aspects of the present invention, when the molding machine is operated, the connection frame provided in the movable-side pipe holding portion so as to extend in the thickness direction of the molding machine is connected to the movable platen side of the molding machine. It is grasped and fixed by the chuck part provided in
Since both can be moved integrally, it is possible to satisfactorily apply to mold exchange even in molds having different mold thicknesses, and it is possible to suppress damage due to twisting or bending of the movable-side piping.

According to the third and fourth aspects of the present invention, when the molding machine is operated, the connection frame, which is provided on the movable platen side of the molding machine in the direction of the mold thickness, is provided on the movable-side pipe holding portion. Since the two parts can be integrally moved by being gripped and fixed by the provided chuck part, the invention can be suitably applied to mold exchange even in molds having different mold thicknesses as in the first and second aspects of the invention. In addition to the above, it is possible to suppress damage due to torsion or bending of the movable side pipe .

[Brief description of the drawings]

Shows a first embodiment of a mold exchange device according to [1] This onset bright
It is a figure and is a perspective view showing the schematic whole composition.

FIG. 2 is a layout diagram showing a case where the method is applied.

Shows a second embodiment of a mold exchange device according to [3] this onset bright
It is a figure and a perspective view explaining the die exchange operation .

FIG. 4 is a perspective view illustrating a synchronous operation of the pipe holding unit.
is there.

FIG. 5 is an elevational view showing an example of the overall configuration of the connection mechanism.

6 is a perspective view showing a specific configuration example of a connection mechanism.

FIG. 7 is a flowchart showing the operation of the connection mechanism.

8 is a plan view illustrating a mold thickness adjustment of the connection mechanism.

Shows a third embodiment of a mold exchange device according to [9] the onset bright
FIG. 3 is a perspective view showing the connection mechanism.

10 is a plan view illustrating a mold thickness adjustment of the connection mechanism.

FIG. 11 is a flowchart showing the operation of the connection mechanism.

[Explanation of symbols]

 1, 1 ', 1X, 1Y Mold 1a Fixed mold 1b Movable mold 2a Fixed pipe 2b Movable pipe 3a Fixed pipe holding section 3b Movable pipe holding section 4a Fixed side moving frame 4b Moving side moving frame 5, 5 'Connection frame 10 Die changing device 11 Die stage 11a A stage 11b B stage 20 Injection molding machine 21a Fixed plate 21b Movable plate 22 Conveyance roller 23 Pipe chuck chuck 23' Chuck portion 23A Base 23B Linear guide bearing 23C Chuck mounting arm 23D Chuck 23E Hydraulic cylinder 23F Pneumatic cylinder 31 Gripping claw 32 Hydraulic cylinder 33 Chuck base 34 Slide shaft 35 Synchronous gear

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI B30B 15/02 B30B 15/02 DH (72) Inventor Kenji Masuoka 1-1-1 Toyota-cho, Kariya-shi, Aichi Pref. (56) References JP-A-61-220815 (JP, A) JP-A-9-66543 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B29C 33/30-33 / 32 B29C 45/26

Claims (4)

(57) [Claims] 1. A mold detachably mounted on a mold mounting portion comprising a fixed platen and a movable platen of a molding machine is carried out to a die mounting surface, and a predetermined die is mounted on the die mounting portion. In a mold exchanging device for exchanging a mold by carrying in, the mold retains the other end of a flexible pipe having one end connected to a fixed platen side of the mold, and performs the mold exchange when exchanging the mold. A fixed-side pipe holding portion that moves synchronously while maintaining the same position relative to the mold, holding the other end of a flexible pipe having one end connected to the movable platen side of the mold, and During the mold exchange, while maintaining the same position relative to the mold, while moving synchronously,
Upon the molding machine availability, while maintaining a relatively same position as the movable platen, have a movable side pipe holding unit to move synchronously, the movable-side pipe holding portion, of the molding machine On movable plate
When the molding machine is in operation,
The movable plate of the molding machine is configured to move integrally with the moving plate,
A connecting portion for connecting is provided, and the connecting portion holds the movable side pipe.
Extending in the direction of movement of the movable platen from the
A mold exchanging apparatus characterized by being fixedly connected to a formed connected portion . 2. A mold having a plurality of mold mounting surfaces and removably mounted on a mold mounting portion comprising a fixed platen and a movable platen of a molding machine is carried out to one mold mounting surface. A mold exchanging device for exchanging a mold by carrying a predetermined mold on another mold mounting surface into the mold mounting portion, wherein one end is connected to a fixed plate side of the mold. Holding the other end of the flexible pipe, and at the time of the mold exchange, while maintaining the same position relative to the mold, and moving in synchronization with a fixed-side pipe holding unit; and a movable platen side of the mold. While holding the other end of the flexible pipe one end of which is connected to, and during the mold replacement, while maintaining the same position relative to the mold, while moving synchronously,
Upon the molding machine availability, while maintaining a relatively same position as the movable platen, have a movable side pipe holding unit to move synchronously, the movable-side pipe holding portion, of the molding machine On movable plate
When the molding machine is in operation,
The movable plate of the molding machine is configured to move integrally with the moving plate,
A connecting portion for connecting is provided, and the connecting portion holds the movable side pipe.
Extending in the direction of movement of the movable platen from the
A mold exchanging apparatus characterized by being fixedly connected to a formed connected portion . (3) From the fixed platen and movable platen of the molding machine
Mold that is removably attached to the mold
It is carried out to the mold mounting surface, and the specified mold is
Die exchange to carry out die exchange by carrying in to the attachment part
In the exchange device, Other than a flexible pipe having one end connected to the fixed platen side of the mold.
Holds the edge and, when exchanging the mold, relative to the mold
Fixed side piping that moves synchronously while maintaining the same position
Holding part, Other than a flexible pipe having one end connected to the movable platen side of the mold.
Holds the edge and, when exchanging the mold, relative to the mold
While maintaining the same position, while moving synchronously,
When operating the molding machine, relative to the movable platen
Holding the movable side piping that moves synchronously while maintaining the same position
Part and The movable-side pipe holding portion is attached to a movable plate of the molding machine.
When the molding machine is in operation,
It is configured to move integrally with the moving platen, The movable platen of the molding machine is provided on the movable platen-side pipe holding portion.
Providing a connecting portion for connecting, the connecting portion of the molding machine
Extends from the movable platen in the moving direction of the movable platen, and is integrated
It is characterized in that it is connected and fixed to the non-connection part formed in
Mold changing device. 4. A molding machine having a plurality of mold mounting surfaces.
Detachable to the mold mounting part consisting of fixed plate and movable plate
Take out the mounted mold to one mold mounting surface and
Then, a predetermined mold on another mold mounting surface is attached to the mold mounting portion.
Die changer for exchanging dies by bringing them in
In other flexible pipe having one end connected to the fixed platen side of the mold
Holds the edge and, when exchanging the mold, relative to the mold
Fixed side piping that moves synchronously while maintaining the same position
In addition to a holding portion and a flexible pipe having one end connected to the movable platen side of the mold,
Holds the edge and, when exchanging the mold, relative to the mold
While maintaining the same position, while moving synchronously,
When operating the molding machine, relative to the movable platen
Holding the movable side piping that moves synchronously while maintaining the same position
Part, the movable-side pipe holding part, the movable plate of the molding machine
When the molding machine is in operation,
The movable platen is configured to move integrally with the moving plate, and the movable platen-side pipe holding portion is provided with a connection portion connected to the movable plate of the molding machine , and the connection portion is movable from the movable plate of the molding machine A mold exchanging device which extends in the direction of movement of the board and is connected and fixed to a non-connecting portion formed integrally.