JPH08332598A - Method and device for press-forming large-sized thin material such as frp - Google Patents

Abstract

PURPOSE: To economically mass-produce a large-sized thin press-formed material such as FRP by effectively using a press. CONSTITUTION: This is the method and device for press-forming a large-sized thin material such as FRP. Dies 5 are arranged in multiple stages in a large- sized press 1 and these dies 5 are synchronously opened and closed. Then, in these dies 5 in multiple stages of the press 1, a carrying-in device 16 of forming materials 15 and a carrying-out device 22 of formed products 12 are arranged to carry in/out the forming materials 15 and the formed products 25 respectively, thereby automatically mass-producing the large-sized thin material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for molding a large thin article such as FRP, and more particularly to a method and an apparatus for forming a large thin article such as FRP in which a plurality of molds are arranged for mass production.

[0002]

2. Description of the Related Art Recently, various FRPs including SMC
Has been molded into various shapes by a press machine, but it has a drawback that productivity is poor as compared with injection molding and extrusion molding.

[0003]

Therefore, although the opening and closing of the mold is controlled at high speed and the molding material having a short molding time is developed, the molding material can be carried in manually, In many cases, the molded product was carried out, and particularly in the case of a large molded product, the work efficiency was extremely poor.

Further, in the case where the molded product is large and thin, even though it is a large press machine with a long stroke specification, only a part of the stroke is used, which is extremely uneconomical and the productivity is high. Was low.

[0005]

The present invention has been made in view of the above points, and in order to solve the above problems, FR
A press for press-molding a large thin article such as P, in which dies are arranged in a plurality of stages in the pressing device, the dies of the plurality of stages are synchronously opened and closed, and the dies of the plurality of stages of the press device are also formed. A large-sized thin-material molding press method and apparatus such as FRP, characterized in that a molding material carry-in device and a molded product carry-out device are respectively installed in the mold, and the molding material and the molded product are carried in and carried out, respectively. .

[0006]

According to the present invention, a large-sized press device can be effectively used by arranging the molds in a plurality of stages in the press device and opening and closing the molds in a plurality of stages in synchronism with each other. Capable of press molding large thin products.

Further, by disposing a molding material carry-in device and a molded product carry-out device in each of a plurality of stages of the press machine, a large molding material and a molded product are automatically carried in and carried out. Therefore, productivity can be greatly improved.

[0008]

EXAMPLES The present invention will be described below based on examples. 1 and subsequent figures show an embodiment of the present invention. F
As shown in FIG. 1, a press device 1 for forming a large-sized thin RP product has a slide 4 vertically movable between a crown 2 and a bed 3, and the slide 4 and the bed 3 have a plurality of stages (see FIG. 2). The mold device 6 for disposing the individual molds 5 is mounted in a replaceable manner by a die set type.

As shown in FIGS. 1 and 2, the mold device 6 has an intermediate slide 7 disposed at the center thereof, and a pantograph-shaped parallel expansion / contraction link elevating / tuning device 9 is attached to the intermediate slide 7. The upper end of the device 9 is pivotally attached to the upper die mounting block 10, and the lower end is pivotally attached to the lower die attaching block 12, so that the upper die attaching block 10, the intermediate slide 7 and the lower die attaching block 12 are parallel to each other. It is possible to move up and down in synchronization with.

Then, as shown in FIG. 2, the upper and lower molds 5 are mounted on the upper mold mounting block 10, the intermediate slide 7, and the lower mold mounting block 12, respectively, and as shown in FIG. 10 is attached to the slide 4 of the press device 1, and the lower die attachment block 12 is attached to the bed 3 in a replaceable manner by a fixture (not shown) or the like.

In this manner, when the slide 4 is pressed by the pressure cylinder 14 arranged in the crown 2, the intermediate slide 7 of the slide 4 and the bed 3 are parallel to each other and the molds 5 in the upper and lower two stages have the same speed. The molding material 15 can be uniformly fluidized and filled in the respective cavities by opening and closing.

The pressure cylinder 14 of the crown 2
In the above, the press control is performed by connecting a pipe by a servo pump or a servo valve so that speed control and pressure control can be performed according to a press diagram of a required stroke-time.

On the injection side of the molding material 15 of the press device 1 constructed as described above, a two-stage loading device 16 is arranged facing the upper and lower two-stage molds 5 as shown in FIG. A molding material supply carriage 17 having a lifter or the like at one end thereof can supply the molding material 15 having a predetermined size and weight to the upper and lower charging conveyors 18, respectively.

Then, as shown in the figure, the above-mentioned two-stage loading device 16 is provided with a charging device 19 for the molding material 15.
The molding material 15 is gripped by the chuck 20 and put into each mold 5 of the press machine 1 so that the molding material 15 can be mounted on each lower mold 21.

Further, on the unloading side of the molded product of the press machine 1,
As shown in FIG. 1, a two-stage carrying-out device 22 is arranged so as to face the upper and lower two-stage molds 5, and the molded product 25 is taken out by the vacuum suction tool 24 of the take-out machine 23 and taken out on the conveyor 26, respectively, and the chute 27 It can be carried out to a predetermined carrying-out position via the above. Reference numeral 28 denotes a mold exchanging carriage, which allows the mold device 6 of the press device 1 to be appropriately replaced.

Thus, a press machine can produce a plurality of large thin molded products in one stroke, and the molding material can be loaded and unloaded by the loading device and the unloading device automatically. The productivity can be improved.

Further, the upper and lower molds of the pressing device can be opened and closed in synchronization with the lifting and lowering tuning device, and even though the molding material is a molding material such as FRP having severe molding conditions, it uniformly flows into the cavity of each mold. It can be filled and can be press-molded so that the upper and lower molded products do not vary.

Since a pantograph-shaped parallel expansion / contraction link is used in the ascending / descending tuning device, it is easy to hold the upper and lower slides horizontally in parallel, and the upper and lower slides can be synchronized. This is preferable because it can be raised and lowered.

Further, in the above-mentioned embodiment, since the die mounting blocks can be provided on the upper and lower sides of the die apparatus so as to be detached from the press apparatus, the die apparatus can be easily attached to the conventional press apparatus and can be easily improved. It is preferable.

Further, in the above embodiment, the slide has two stages, but it is also possible to have three stages or more, and the molds can be mounted so that they can be exchanged in a predetermined number of stages according to the production amount. You can also do it.

Further, in the embodiment, the ascending / descending tuning device is a pantograph-shaped parallel expansion / contraction link, but a rack and pinion mechanism in which a pinion is pivotally attached to a slide or a hydraulic cylinder can be used. If necessary, the slides can be supported in parallel by a balance support device. Furthermore, the carry-in device, the carry-out device, and the like can be appropriately modified and implemented based on the spirit of the present invention.

[0022]

As described above, according to the present invention, the dies are arranged in a plurality of stages in the pressing device and the dies of a plurality of stages are opened and closed in synchronization with each other, so that a large-sized press device is effectively used. Moreover, it is possible to press-form a plurality of large thin products at one time.

Further, since a molding material carry-in device and a molded product carry-out device are respectively arranged in a plurality of dies of the pressing device, a large-sized molding material and molded product are automatically carried in,
It can be carried out and productivity can be greatly improved.

Further, by mounting the die device by exchanging it with the press device, a plurality of stages of dies can be replaced at the same time, and it is easy to divert to a conventional press device and can be effectively utilized. You can

Furthermore, by using a pantograph-shaped parallel expansion / contraction link attached to slides arranged in a plurality of stages as the elevating / lowering synchronizing device, the parallelism of the slides in a plurality of stages can be easily maintained and press forming is performed. Is something that can be done.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of an embodiment of the present invention,

FIG. 2 is a side view of a slide elevating / tuning device portion of the above press device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Press device 2 ... Crown 3 ... Bed 4 ... Slide 5 ... Mold 6 ... Mold device 9 ... Elevating / tuning device 15 ... Molding material 16 ... Loading device 22 ... Unloading device

Claims (5)

[Claims] 1. A press for press-molding a large thin object such as FRP, wherein the molds are arranged in a plurality of stages in the press device, and the molds of a plurality of stages are opened and closed in synchronization with each other. A molding material carry-in device and a molding product carry-out device are respectively arranged in a plurality of stages of dies to carry the molding material and the molding product, respectively.
A large-sized thin material molding press method such as FRP, which is characterized by carrying out. 2. A multi-stage mold device that opens and closes in synchronization is attached to a press device in a replaceable manner, and a multi-stage mold is opened and closed in synchronization to form a plurality of large thin objects such as FRP simultaneously. Item 2. A large-sized thin material molding press method such as FRP according to Item 1. 3. A large-sized thin article molding press such as an FRP, in which a die is arranged in a plurality of stages in a press device, and an elevating and lowering synchronizer is arranged so as to open and close the stages in a synchronized manner. A large-sized thin-material molding press device such as an FRP, wherein a molding material carry-in device and a molded product carry-out device are respectively arranged in a plurality of stages of the pressing device. 4. The large-sized thin-material molding press device for FRP and the like according to claim 3, wherein a plurality of stages of mold devices that open and close in synchronization are attached to the press device in a replaceable manner. 5. The large-sized thin-material molding press device for FRP or the like according to claim 3 or 4, wherein the ascending / descending tuning device is one in which pantograph-shaped parallel expansion / contraction links are attached to slides arranged in a plurality of stages.