JP3467206B2 - Control unit integrated mold for injection molding - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control unit integrated type injection molding die used in an injection molding apparatus for resins such as plastics.

[0002]

2. Description of the Related Art Conventionally, for example, a connector box is attached to a molding die of an injection molding machine having a built-in hot runner, and a heater or a sensor for the hot runner is connected to this connector box, and relay is performed through this connector box. It is customary to separately connect to an independent control unit (controller main body) using a wire or the like, and the control unit is usually provided with a power source and an entry unit for setting and display operation.

[0003]

However, in the above-mentioned conventional example, as shown in FIG. 3, since the molding die 2 and the control unit 1c are separated from each other, the control unit 1c is housed in the control box 1d. The control unit 1c and the hot runner in the molding die 2 are connected by a relay line 5 via a connector box 6 attached to the molding die 2. Therefore, the relay wire 5 is required, and in the case of extending the portion related to the sensor by the wiring (not shown) inside the control unit , it is necessary to use the compensating lead wire, which makes the wiring complicated and further reduces the cost. There is a problem of becoming high.

The present invention has been made in view of the above situation, and it is possible to omit the connector box, the relay line, the internal wiring, etc., and the compensating lead wire is not necessary, and further, the control capacity is optimized and the size is reduced. An object of the present invention is to provide a control unit- integrated injection molding die that can realize rationalization of resource saving, space saving, cost reduction, and the like.

[0005]

The present invention can solve the above-mentioned problems by providing the following constitutions.

[0006] (1) In the mold used in the injection molding apparatus, the control unit the downsized, control, characterized by comprising an integral structure with integrated with the control unit and the mold Unit integrated injection mold.

(2) The control unit has a structure in which various elements constituting the control unit for satisfying the supply requirement of the supply material are embedded in the non-movable part of the molding die and the wiring and the control box are omitted. (1) The control unit according to the above (1).
Knit integrated mold for injection molding.

(3) The control unit miniaturizes various elements constituting the control unit for satisfying the supply requirement of the feed material, and accommodates the various elements constituting the control unit in a small control box engaging with them. Then, the control unit integrated injection molding die according to the above (1) is characterized in that the molding die is directly connected and attached to a desired portion outside the non-movable part of the molding die, and wiring and the like are omitted.

[0009]

1 is a block diagram of a control unit according to the present invention.
Tsu DOO main configuration diagram illustrating an "example of a control unit is embedded in the mold" in an embodiment of an integrated injection-molding mold, FIG. 2 is a control unit for integrally injection molding according to the present invention FIG. 4 is an explanatory view of a main part configuration showing “an example in which a control unit is attached to a molding die” in one embodiment of the die, FIG. 3 is an explanatory view showing a configuration example of a conventional molding die and a control unit. FIG. 4 is a vertical sectional side view showing an example of a conventional general hot runner mold.

First, a hot runner of a molding die used in an injection molding machine will be outlined.

The hot runner is an indispensable technique for mass production of molded products, and it is necessary to control the temperature of the feed material like the plasticizing cylinder of the injection molding machine by heating the resin or the like as the feed material in the runner from inside and outside. Is.

The hot runner is equipped with a power source control device for the manifold, a connector (connecting tool), a temperature adjusting device, etc. to prevent the supply material such as resin from accumulating, runner balance in the case of multiple picking, and further. There are requirements such as measures against thermal expansion of the manifold and nozzle bush, and in particular, accurate and uniform temperature control of the manifold and nozzle is required.

For example, when the set temperature is too high, the molten resin or the like to be supplied is decomposed to cause deterioration of physical strength and appearance quality. The fluidity of the resin and the like decreases, and the pressure loss in the hot runner increases, causing short shots and damaging the nozzle (hot tip).

(Example 1) Example 1 will be described below with reference to FIG.

In the molding die 2 used in the injection molding apparatus, the control unit 1a corresponding to the controller body.
As the optimum capacity, and the control unit 1a and the molding die 2 are integrated into an integrated structure, that is, in a non-movable part of a spacer block which is a component of the molding die 2, for example. A space is provided, and the control unit 1a for satisfying the supply requirement of the supply material such as resin is configured.
For example, elements such as a print substrate are properly arranged and housed in a space provided in a non-movable portion of a spacer block that constitutes the molding die 2, and an entry unit 3 and a power source for setting and displaying operations are provided. 4 is a form in which various elements forming a control unit as a structure that can be fitted or connected to a desired portion of the molding die 2 are embedded in the molding die 2;
The wiring and control box can be omitted.

The operation will be described based on the above configuration.

By optimizing the control capacity of the control unit 1a for satisfying the supply requirement of the supply material such as resin and downsizing, the elements constituting the control unit 1a, such as the print substrate, are formed into the molding material. Since it can be properly arranged and accommodated in a space provided in a non-movable portion such as a spacer block which constitutes the mold 2, the control unit 1a is embedded in the molding mold 2 to form an integrated structure. Since the internal unit and the relay line are not required and the entry unit 3 and the power source 4 for setting and displaying operations can be fitted or connected to a desired portion of the molding die 2, the compensating lead wire is also provided. It became unnecessary, the complexity of wiring was eliminated, and the price could be reduced.

(Example 2) Example 2 will be described below with reference to FIG.

In the molding die 2 used in the injection molding apparatus, the control unit 1b corresponding to the controller body.
As an optimum capacity, and the control unit 1b and the molding die 2 are integrated into an integrated structure, that is, for example, the control unit 1b constitutes the control unit 1b for satisfying the supply requirement of the supply material. The various elements that constitute the control unit 1b are housed in a small control box that engages with these elements, and the elements are directly connected to a desired portion outside the non-movable portion of the molding die 2 through fastening members such as bolts. In addition, the entry unit 3 and the power supply 4 for setting and displaying operations.
Is the control unit 1 directly attached to the molding die 2.
It suffices if it is fitted or connected to a small control box accommodating b, so that the relay line can be omitted.

The operation will be described based on the above configuration.

By optimizing the control capacity of the control unit 1b for satisfying the supply requirement of the supply material such as resin and downsizing the control unit 1b, the elements such as the print substrate, which constitute the control unit 1b, can be formed by the molding. The various elements constituting the control unit 1b can be properly arranged and housed in a small control box directly connected to a desired portion outside the non-movable part of the mold 2 via a fastening member such as a bolt, and the control unit 1b can be stored as described above. Since it has an integral structure that is directly connected to the molding die 2, a relay line is not required, and a compact control in which the entry unit 3 and the power source 4 for setting and displaying operations are directly connected and mounted to the molding die 2. Since the structure is such that it can be fitted or connected to a desired part of the box, a relay line is unnecessary, the complexity of wiring is eliminated, and the cost can be reduced.

As described above, the advantages of the present invention can be summarized in the following items.

A relay line for connecting the control unit and the mold is unnecessary, and it suffices to connect the power source and the entry unit directly to the mold.

Compared to the conventional rated capacity control unit,
It is possible to optimize the control unit capacity and power supply wiring capacity that match the heater capacity.

Conventionally, the connector box is provided with a terminal block, and the wiring for connecting the hot runner heater, the manifold heater, and the respective sensors via the terminal block has been required, but in the present invention, these wirings are used. It can be reduced or omitted.

In the hot runner, a thermocouple sensor is usually used, and when extending the sensor wire, a dedicated compensating lead wire is required, and for example, a dedicated wire called J or K must be used. Control uni like
In the case of integrally forming the mold and the molding die, the compensating lead wire is not required, and therefore only the setting change is required.

When the control unit is embedded (built-in) inside the molding die, the control box, connector box, internal wiring, relay wire, etc. can be omitted, and the cost required for built-in is unnecessary. Compared with the cost of, the price is quite small and the price can be reduced.

Furthermore, the installation space for the control unit is not required, and at the same time, an accident such as a connection of a control unit that does not match the mold can be avoided.
It is also effective in safety management.

[0029]

According to the present invention, the connector box, the relay line, the internal wiring, etc. can be omitted, and the compensating lead wire is not required. Further, the control capacity is optimized and downsized, the resource saving, the space saving, and the low price are achieved. It has the effect of being able to realize rationalization such as computerization.

[Brief description of drawings]

FIG. 1 is an explanatory view of a main part configuration showing an “example in which a control unit is embedded in a molding die” in an embodiment of a control unit- integrated injection molding die according to the present invention.

FIG. 2 is an explanatory view of a main part configuration showing “an example in which a control unit is mounted in a molding die” in an embodiment of a control unit- integrated injection molding die according to the present invention.

FIG. 3 is an explanatory view showing a configuration example of a conventional molding die and a control unit.

FIG. 4 is a vertical sectional side view showing an example of a general hot runner mold.

[Explanation of symbols]

1a, 1b, 1c control unit (controller body) 1d control box (conventional) 2 molding die 3 entry unit (for setting and display operation) 4 power cable 5 relay wire (hot runner and control unit in the die 6) Connector box

Claims (3)

(57) [Claims] 1. A mold for use in injection molding apparatus, the control unit is downsized, characterized in that it comprises as an integral structure with integrated with the control unit and the mold control unit One-piece injection mold. 2. The control unit has a structure in which various elements constituting the control unit for satisfying the supply requirement of the supply material are embedded in the non-movable part of the molding die and the wiring and the control box are omitted. The control unit according to claim 1, wherein the control unit is an integral mold for injection molding. 3. The control unit miniaturizes the elements constituting the control unit for satisfying the supply requirement of the feed material, and accommodates the elements constituting the control unit in a small control box engaging with them. 2. The control unit- integrated injection molding die according to claim 1, wherein the molding die is directly connected to a desired portion outside the non-movable portion of the molding die, and wiring and the like are omitted.