JPH06114868A - Molding device for resin part - Google Patents

Abstract

PURPOSE:To simplify the device constitution and easily and efficiently mold the whole of a part under the almost same conditions. CONSTITUTION:A molding device is equipped with a freely advancing and retreating transfer mechanism 12, the lower mold 14 mounted on the transfer mechanism 12, the upper mold 18 demarcating a molding cavity 16 along with the lower mold 14 and freely opened and closed with respect to the lower mold 14, the supply mechanism 20 provided to the transfer mechanism 12 and capable of supplying a medium of every kind such as mold temp. adjusting cooling water or pressure oil, the multi-joint mechanism 22 formed to the supply mechanism 20 in a freely detachable manner and freely supplying a desired medium into the lower mold 14 from the supply mechanism 20 and the flexible connector 24 connected to the multi-joint mechanism 22 to freely supply the desired medium to the upper mold 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding apparatus for resin parts for press-molding a plurality of thermoplastic sheet materials which are softened by heating and laminated.

[0002]

2. Description of the Related Art For example, there are bumper beams for automobiles in which resin parts are used instead of metal parts in order to reduce weight and improve shock absorption.
This resin component is obtained by press molding a thermoplastic sheet material in which glass fibers or carbon fibers are impregnated with a thermoplastic resin. Specifically, when molding a bumper beam, a plurality of thermoplastic sheet materials are heated on both sides by a heater or the like to about 200 ° C. in a heating furnace to be softened, sequentially laminated and put into a cavity in a mold. After that, a pressing pressure of 70 to 110 kg / cm ² is applied according to the product shape and the like.

[0003]

In this case, for the upper mold and the lower mold which compose the mold, the mold temperature control is provided for preheating the mold during initial operation and for cooling after molding during continuous operation. Various circuits such as a hydraulic circuit and an electric circuit for activating the circuit, the molded component drop prevention core are provided. Therefore, the upper mold and the lower mold are each provided with a dedicated supply mechanism capable of supplying various media such as cooling water and pressure oil. Therefore, especially in a mold with a large number of circuits,
It has been pointed out that each supply mechanism becomes large in size, and the mold as a whole becomes considerably large and complicated. Moreover, when molding a part having a complicated shape such as a bumper beam, it is desired to mold under substantially the same conditions as a whole in order to avoid strength unevenness such as compression and tension. Such control of the dedicated supply mechanism provided would be quite difficult.

The present invention solves this type of problem, and simplifies the apparatus structure, and makes it possible to mold the entire parts easily and efficiently under substantially the same conditions. It is an object of the present invention to provide a molding device of.

[0005]

In order to achieve the above-mentioned object, the present invention is a molding apparatus for press-molding a plurality of thermoplastic sheet materials in a state where they are softened by heating and laminated in a press-molding position. A forming mechanism is defined between a transfer mechanism that can move back and forth, a first mold mounted on the transfer mechanism, and the first mold, and a molding cavity is defined with respect to the first mold. A second mold that can be opened and closed, a supply mechanism that is provided in the transfer mechanism and that can supply various media such as mold temperature adjusting cooling water and pressure oil, and a supply mechanism that is fixed to the first mold. A multi-joint mechanism that is configured to be detachable from the feeding mechanism and is capable of feeding a desired medium from the feeding mechanism into the first die, and one end side of the multi-joint mechanism is connected to the second die. The other end is connected to the multi-joint mechanism Characterized in that the al in the second mold and a flexible connection member can freely supply the desired media.

[0006]

According to the above-described apparatus for molding a resin component according to the present invention, the supply mechanism is connected to the multi-joint mechanism fixed to the first mold, and the flexible joint body is connected to the multi-joint mechanism. The second mold is connected via the.
In this state, when various media such as cooling water and pressure oil are supplied from the supply mechanism to the multi-joint mechanism, the medium is introduced into various circuits in the first mold, while the multi-joint mechanism and It is introduced into a predetermined circuit in the second mold through the flexible connecting body. Therefore, substantially the same molding conditions are set in the first mold and the second mold, and even if the component has a particularly complicated shape, it has desired rigidity and stable quality can be obtained. Further, with the supply mechanism separated from the multi-joint mechanism, the first and second molds are replaced with a new first mold.
By replacing the second mold with the second mold, a desired medium can be supplied to the new first and second molds by the same supply mechanism, and there is an advantage that the versatility is excellent.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A resin component molding apparatus according to the present invention will be described below with reference to the accompanying drawings.

1 and 2, reference numeral 10
Shows a molding apparatus for resin parts according to the present embodiment. The molding apparatus 10 includes a transfer mechanism 12 that can move back and forth with respect to a press molding position PS, lower dies (first dies) 14 and 14a mounted on the transfer mechanism 12, and lower dies 14 and 14a. Molding cavities 16 and 16a are defined between them, upper molds (second molds) 18 and 18a that can be opened and closed with respect to the lower molds 14 and 14a, and the transfer mechanism 12 are provided with the molds. A supply mechanism 20 capable of supplying various mediums such as cooling water for temperature adjustment and pressure oil, and a supply mechanism 20 that is fixed to the lower molds 14 and 14a and is detachable from the supply mechanism 20. A multi-joint mechanism 22 capable of supplying a desired medium into the lower molds 14 and 14a from 20 and one end side of which is connected to the multi-joint mechanism 22.
The upper molds 18, 18a are connected to the other ends thereof, and the flexible joint body 24 is provided so that a desired medium can be supplied from the multi-joint mechanism 22 into the upper molds 18, 18a.

The transfer mechanism 12 is provided with a guide member 26 extending in the direction of arrow A, and movable bases 28, 28a which are movable back and forth in the direction of arrow A along the guide member 26 via an actuator (not shown). 28 and 28a are integrally fixed via a connecting rod 30. The lower die 14 is mounted on the moving base 28, the lower die 14a is mounted on the moving base 28a, and the supply mechanism 20 is mounted on the side portions of the moving bases 28, 28a which are separated from each other.

As shown in FIGS. 3 and 4, the feeding mechanism 2
0 includes a set of fixed bases 32 held at the ends of the moving bases 28 and 28a, and a pair of guide rods 34 are slidably fitted to both ends of the fixed base 32. This guide rod 3
4, a pair of cylinders 36 are supported, and a joint member 40 is fixed to a rod 38 extending upward from the cylinder 36. At the side of the joint member 40, first ports 42a and 42b for circulating cooling water to cooling passages (not shown) in the lower molds 14 and 14a, and cooling passages in the upper molds 18 and 18a (see FIG. A second port 44a, 44b for circulating cooling water to a not shown), and a driving pressure oil for advancing and retracting a core (not shown) arranged in the lower mold 14, 14a for preventing a molded part from falling. Third ports 46a and 46b for circulation and the upper molds 18 and 18a
A core (not shown) that is placed on the wall to prevent the molded parts from falling.
Fourth ports 48a and 48b for circulating the driving pressure oil for advancing and retreating and the wiring port 50 are provided.

The first ports 42a, 42b and the second ports 44a, 44b are bent upward in the joint member 40 so as to communicate with the connecting cylinders 52a to 52d, respectively, and the third ports 46a, 46b and the fourth port 46a, 46b. Port 48
Similarly, a and 48b are bent upward and connected to the connecting cylinder 54a.
Through 54d. The wiring port 50 is bent upward in the joint member 40, and the connector portion 56 is fixed to the upper end portion of the joint member 40. A pair of guide posts 58 are fixed to both ends of the joint member 40.

The multi-joint mechanism 22 includes a lower mold 14,
Valve-attached connecting bodies 58a to 58d, which are fixed to the side portions of the joint member 14 which are spaced apart from each other, and which fit into the connecting tubular bodies 52a to 52d of the joint member 40, and the connecting tubular bodies 54a to 5d.
4d includes fittings 60a to 60d with valves, and a connector portion 62 that is coupled to the connector portion 56. The valve-attached connecting bodies 58a, 58b and the cooling passages (not shown) in the lower molds 14, 14a communicate with each other via the pipes 64a, 64b, and the valve-attached connecting bodies 60a, 60b and the lower molds 14, 14a are connected. A driving source for advancing and retracting a core (not shown) arranged to prevent the molded parts from falling is formed by the pipes 66a,
It communicates via 6b. The connector portion 62 has wiring 68a.
Is connected to the electrical system of the lower molds 14 and 14a via.

Multi-joint mechanism 22 and upper dies 18, 1
The flexible connecting body 24 for connecting with the 8a is, specifically, the flexible tube bodies 64c, 64d for connecting the valve-having connecting bodies 58c, 58d and the cooling passages (not shown) in the upper molds 18, 18a.
And flexible pipes 66c, 66 for communicating the valve-attached connecting bodies 60c, 60d with a drive source for advancing and retracting a core (not shown) disposed in the upper molds 18, 18a for preventing the molded parts from falling.
d, and a wiring 68b that connects the connector portion 62 and the electric system of the upper molds 18 and 18a. This flexible connector 24
Is set to a length such that the upper molds 18 and 18a can be sufficiently opened from the lower molds 14 and 14a.

A thermoplastic sheet material (not shown) is fed to the press-molding position PS via the carrier table 70.
The carrier 70 is movable back and forth in the direction of arrow B intersecting with the direction of arrow A, and is arranged at the press molding position PS and the heating furnace 72, and is heated and softened in the heating furnace 72. Is conveyed to the press molding position PS.

Next, the molding apparatus 10 configured as described above.
The operation of will be described.

First, a predetermined lower mold 1 is attached to the moving bases 28, 28a.
4, 14a are mounted, and the supply mechanism 20 is connected to the multi-joint mechanism 22 fixed to the lower molds 14, 14a. That is, as shown in FIG.
The pair of cylinders 36 constituting the
When the multi-joint mechanism 22 extends upward, the joint member 40 fixed to the rod 38 rises at that time.
Connected to. The multi-joint mechanism 22 is provided with valves 58a to 58d and valves 60a to 60.
The d and the connector portion 62 are selectively connected to the lower molds 14 and 14a and the upper molds 18 and 18a.

Then, a plurality of thermoplastic sheet materials that have been heated and softened in the heating furnace 72 are conveyed to the press-molding position PS via the conveyance table 70. At the press-molding position PS, the lower mold 14 is disposed, for example, via a moving table 28, and the upper mold 18 corresponding to the lower mold 14 is supported so as to be vertically movable. In a state where the upper mold 18 is opened from the lower mold 14, the plurality of softened thermoplastic sheet materials are positioned at the press molding position PS and the upper mold 18 is lowered to lower the lower mold 14 and the upper mold 18. Press-molded by and. Then, under the driving action of the transfer mechanism 12, the moving table 28,
28a is integrally moved in the direction of arrow A,
8a is arranged at the press molding position PS. Then, a new thermoplastic sheet material is press-molded by the lower mold 14a and the upper mold 18a, while the lower mold 14 and the upper mold 18 are pressed.
The molded parts press-molded by and are cooled and solidified.

In this case, in this embodiment, the moving bases 28, 2
The moving bases 28, 28a are integrally configured to be movable back and forth in the direction of arrow A in a state where the supply mechanism 20 provided in 8a is connected to the multi-joint mechanism 22 fixed to the lower molds 14, 14a. . Therefore, the moving tables 28, 28
Various media such as cooling water and pressure oil can be supplied to the lower molds 14 and 14a and the upper molds 18 and 18a regardless of the arrangement position of a. Therefore, for example, after the thermoplastic sheet material is press-molded by the lower mold 14 and the upper mold 18, it is not necessary to dispose the lower mold 14 and the upper mold 18 at the press molding position PS until the molded parts are cooled and solidified. . This allows
By moving the moving tables 28 and 28a immediately after press molding, it is possible to obtain an effect that the press molding operation of a new thermoplastic sheet material can be efficiently and quickly performed through the lower mold 14a and the upper mold 18a.

Moreover, the upper dies 18, 18a are connected to the multi-joint mechanism 22 fixed to the lower dies 14, 14a via the flexible connecting member 24, and the second dies of the supply mechanism 20 are connected.
The cooling water introduced into the ports 44a and 44b is circulated through the multi-joint mechanism 22 and the flexible connecting body 24 to a cooling passage (not shown) in the upper molds 18 and 18a.
Therefore, as in the conventional case, the lower molds 14 and 14a and the upper mold 18,
Compared with a structure in which a dedicated supply mechanism is provided for each of 18a and 18a, the configuration can be simplified at once and the entire molding apparatus 10 can be easily downsized.

Further, from the same supply mechanism 20 to the lower mold 1
4, 14a and the upper molds 18, 18a can be supplied with cooling water, pressure oil, etc. under the same conditions, and even molded parts having complicated shapes can be molded under substantially the same conditions. Become. As a result, there is an advantage that unevenness in strength such as compression and tension can be avoided, and a molded part having stable rigidity and quality can be obtained.

Furthermore, the supply mechanism 20 is constructed so as to be attachable to and detachable from the multi-joint mechanism 22. Therefore, in the state where the joint member 40 is separated from the multi-joint mechanism 22 under the action of the cylinder 36 that constitutes the supply mechanism 20, the lower dies 14,
14a and the upper molds 18 and 18a are removed to move the moving table 2
8, 28a with new lower molds 14, 14a and upper molds 18, 18
a and the supply mechanism 20 is connected to the multi-joint mechanism 22 fixed to the new lower molds 14 and 14a, the new lower molds 14 and 14a are connected through the same supply mechanism 20. It is possible to supply a desired medium to the upper molds 18 and 18a. Thereby, the effect of being excellent in versatility can be obtained.

[0022]

EFFECTS OF THE INVENTION The molding apparatus for resin parts according to the present invention has the following effects.

Since the supply mechanism is connected to the multi-joint mechanism fixed to the first mold, and the second mold is connected to this multi-joint mechanism through the flexible connecting body, the supply mechanism is Various media such as supplied cooling water and pressure oil are introduced into various circuits in the first and second molds. For this reason, substantially the same molding conditions are set in the first mold and the second mold, and even if the component has a complicated shape, desired rigidity and stable quality can be obtained. Moreover, if the first and second molds are replaced with new first and second molds with the supply mechanism separated from the multi-joint mechanism, the new first and second molds can be replaced by the same supply mechanism. A desired medium can be supplied to the mold, and there is an advantage that it is excellent in versatility.

[Brief description of drawings]

FIG. 1 is a schematic front explanatory view of a resin component molding apparatus according to the present invention.

FIG. 2 is a schematic plan view of the molding apparatus.

FIG. 3 is a schematic perspective view showing a state in which a supply mechanism and a multi-joint mechanism that constitute the molding apparatus are connected to each other.

FIG. 4 is a perspective view illustrating a state where the supply mechanism and the multi-joint mechanism are separated from each other.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Molding apparatus 12 ... Transfer mechanism 14, 14a ... Lower mold 16 ... Cavity 18, 18a ... Upper mold 20 ... Supply mechanism 22 ... Multi-joint mechanism 24 ... Flexible connection body 28, 28a ... Moving stand 36 ... Cylinder 40 ... Joint member 42a, 42b, 44a, 44b ... Port 46a, 46b, 48a, 48b ... Port 58a-58d, 60a-60d ... Valved connector

Claims (1)

[Claims] 1. A molding apparatus for press-molding a plurality of thermoplastic sheet materials in a state where they are softened by heating and laminated, and a transfer mechanism that is movable back and forth with respect to a press-molding position, and is mounted on the transfer mechanism. A molding cavity is defined between the first mold and the first mold, and a second mold that can be opened and closed with respect to the first mold is provided in the transfer mechanism. A supply mechanism capable of supplying various media such as cooling water for temperature adjustment and pressure oil; and a supply mechanism that is fixed to the first mold and is detachable from the supply mechanism. A multi-joint mechanism capable of freely supplying a desired medium into the mold, and one end side of which is connected to the multi-joint mechanism,
A molding machine for resin parts, comprising: a flexible connecting body, the other end side of which is connected to the second mold and which is capable of supplying a desired medium from the multi-joint mechanism into the second mold. .