JPH07112445A - Device for automatically injecting foaming resin material - Google Patents

Abstract

PURPOSE:To shorten the cycle time and improve the productivity by providing an articulated robot, first rotating shaft, injection head, fork holding unit, and a form member to close a lid, of which the vertically turnable leading end is opened by a second rotating shaft. CONSTITUTION:An arm part 16 is bent by a joint part 16 under a condition in which a handle part 36 is firmly engaged with a fork member 15 for lid- closing, and a fork holding part 14 is moved in the outside direction of a forming line 35. Then, when a second rotating shaft 20 is turned at the same time, the fork member 15 for lid-closing turns, and the hand part 36 moves in the lateral direction, and then, a lid form 31 turns in the closing direction by a hinge 33. After the lid closing is thus completed, when the forming line 35 continues moving further, since the opening part of the fork member 15 for lid-closing faces the advancing direction of the mold, the handle part 36 of the lid form 31 is released from the engagement with the movement of the mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically injecting a foamed resin material, and more particularly to an automatic injection apparatus for successively injecting a foamed resin material into a moving foaming mold and then closing the lid of the mold. Regarding injection device.

[0002]

2. Description of the Related Art For example, in foam molding of interior parts such as an instrument panel of an automobile, a plurality of foam molding dies are placed on a turntable or a conveyor, molds (lids) are opened, inserts are set, foam resin material The steps of injecting, closing the mold (lid), and foaming and hardening are sequentially and successively performed at each station. By the way, in the molding step, with respect to the lid closing after the foamed resin material is injected, there are a case where a lid closing mechanism is provided for each molding die and a case where the lid closing mechanism is provided not along the individual molding die but along the molding line. is there.

In the former case where the lid closing mechanism is provided in each molding die, for example, a hydraulic cylinder device for opening and closing the lid is mounted, but in this case, it is installed in the molding line. This lid opening / closing device and drive-related members (hydraulic piping, etc.) must be mounted on all the molds, which is problematic in terms of equipment and cost.

On the other hand, in the latter case where the lid closing mechanism is provided along the molding line instead of the individual molding dies, for example, a guide bar having a shape gradually descending along the line along which the molding dies move is provided. A lid type handle is attached to the guide bar, and the lid is closed as the forming die moves.
In this guide bar system, it is not necessary to provide an opening / closing mechanism for each mold as in the former, which is advantageous in terms of equipment and cost. However, in this system, it is possible to move the mold by moving the mold. Since the lid is closed, there is a problem that it takes time to close the lid. That is,
Since the continuous process line of this seed foam molding progresses relatively slowly due to the need for foam curing time, it takes about 30 to 40 seconds from the completion of the injection of the resin material to the completion of the lid closing. At this time, the resin material injected into the molding die has a problem that the foaming reaction proceeds until the lid is closed, and the die cannot be closed in a die closing time most suitable for the reaction speed.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above problems, and has a simple structure that enables rapid closing of the lid following the injection of the foamed resin material. The present invention intends to provide a novel automatic foaming resin material injection device which is advantageous in terms of equipment and cost.

[0006]

That is, the present invention is
An automatic injection device for sequentially injecting a foaming resin material into a moving foaming mold and closing the lid of the mold after the injection, wherein the articulated robot has an arm that moves relative to the foaming mold. A first rotating shaft provided on the arm of the multi-joint robot, a foamed resin material injection head provided so as to be horizontally movable by the first rotating shaft, and the first rotating shaft integrally. A fork holding part that rotates and has a second turning shaft, and a lid closing member that is provided on the fork holding part and that is vertically rotatable by the second turning shaft of the holding part and has an open tip. The present invention relates to an automatic injecting device for a foamed resin material, which has a fork member for use.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a side view showing an essential part of an automatic injection device according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a state in which a foaming resin material is injected into a foaming mold using the device of the present invention. FIG. 3 is a plan view, FIG. 3 is a plan view thereof, FIG. 4 is a side view showing a state in which a lid closing fork member is operated in a partial section, FIG. 5 is a plan view thereof, and FIG. FIG. 7 is a side view showing the completed state, and FIG. 7 is a plan view thereof.

The automatic injection device 10 of the present invention is for moving the foam molding die 30 to inject the foamed resin material into the mold and for closing the lid promptly.
Also, as shown in FIG. 2, it comprises an articulated robot 11, a first rotary shaft 12, an injection head 13, a fork holder 14, and a lid closing fork member 15.

The foaming mold 30 will now be described. The foam mold 30 includes a lid mold 31 and a cavity mold 32.
And is configured to be openable and closable by the hinge portion 33. Reference numeral 34 is a molded product cavity, and 36 is a handle portion that engages with the lid closing fork member 15 of the device 10 of the present invention. A plurality of foaming molds 30 are placed on a continuously moving molding line 35 such as a conveyor or a turntable. Each process for manufacturing the foam-molded product is arranged at a predetermined position around the molding line 35, and the foam-molded product is continuously manufactured by sequentially moving the steps such as the turntable. It The automatic injection device 10 for a foamed resin material of the present invention is provided at the injection position of the foamed resin material on the molding line 35.

In the articulated robot 11, a plurality of arms 16 are connected via joints 17, and a foam molding die which moves on a molding line 35 such as the turntable when the foam resin material is injected into the mold. It is possible to freely move back and forth or up and down and left and right with respect to the movement of 30.

A first rotating shaft 12 is provided below the tip of the arm 16. The first rotating shaft 12 rotates in a substantially horizontal direction with respect to the floor surface, and an injection head 13 and a fork holding portion 14, which will be described later, are rotatably attached to the first rotating shaft 12.

The injection head 13 is for injecting the foamed resin material into the mold, and is provided with the mixing device 19 for the foamed resin material. The injection head 13 includes the first
It is provided on an arm portion 18 provided orthogonal to the rotating shaft 12 and is configured to be movable in the horizontal direction with respect to the floor surface. Reference numeral 21 is an injection nozzle.

The fork holding portion 14 has a second rotating shaft 20 provided with a lid closing fork member 15, and is provided at the tip of the first rotating shaft 12 to provide the first rotating shaft.
It rotates integrally with the rotating shaft 12.

The second rotating shaft 20 is provided on the opposite side of 180 ° with respect to the protruding direction of the arm portion 18 of the injection head 13 and rotates vertically with respect to the floor surface. The lid-closing fork holding member 15 rotates integrally with the rotation of the second rotation shaft 20.

The lid closing fork member 15 is for closing the lid immediately after injecting the foamed resin material into the mold, and one or both tips of which are C-shaped or D-shaped in plan view are opened. In addition, the handle portion 36 of the lid mold 31 can be engaged with the handle portion 36. This lid closing fork member 1
The reference numeral 5 is adapted to rotate vertically with respect to the floor surface by the second rotation shaft 20 and to rotate horizontally with respect to the floor surface by the first rotation shaft 12.

Next, the operation of the automatic injection device 10 of the present invention will be described. As shown in FIGS. 2 and 3,
When the foam molding die 30 arranged on the moving molding line 35 such as the turntable reaches the pouring position of the foam resin material, the foam resin material P is injected into the cavity mold 32 from the pouring head 13 of the automatic pouring device 10. To be done. At that time, the lid mold 31 is opened and the handle portion 36 is in a substantially upright state.

When a prescribed amount of the foamed resin material P is injected, the molding die 30 starts moving again (upward in the figure) by the molding line 35, as shown in FIGS. 4 and 5. On the other hand, the automatic injection device 10 operates the articulated robot 11 to extend the arm 16 toward the lid mold 31 and pivot slightly downward so that the fork holder 14 is rotated by the second rotation, as understood from the figure. The shaft 20 is connected to the handle portion 36.
Place it on the back of the movement path of.

Then, the first rotating shaft 11 is rotated by 90 °, and the open portion of the lid closing fork member 15 is directed in the advancing direction of the molding die. Further, the arm 16 is swung upward by the articulated robot 11, and the handle portion 3 of the lid mold 31 is opened from the open portion of the tip of the lid closing fork member 15.
Lock 6 together.

By engaging the lid closing fork member 15 from the rear side in the advancing direction of the molding line, even if the operation of the automatic injecting device 10 is stopped by mistake, the handle portion 36 is attached to the lid closing fork member 15. It prevents the multi-joint robot 11 from being broken through the open part and being damaged. During this time, the molding line 35 continues to move,
The multi-joint robot 11 is caused to turn following the movement of the molding die 30.

As shown in FIGS. 6 and 7, the arm portion 16 is bent through the joint portion 17 while the handle portion 36 is securely engaged with the lid closing fork member 15, and the fork holding portion 14 is provided. Is moved to the outer side of the molding line 35 (left side in the figure). At the same time, the second rotation shaft 2
When 0 is rotated, the lid closing fork holding member 15 rotates, and the handle portion 36 moves to the left, so that the lid mold 3
1 rotates in the closing direction via the hinge portion 33.

When the molding line 35 continues to move after the lid closing is completed in this way, the open portion of the lid closing fork member 15 faces the advancing direction of the die, and therefore the handle of the lid die 31. The part 36 is released from its engagement as the mold moves.

According to the device of the present invention, the time taken to close the lid is about 6 to 7 seconds, which is about 5 minutes as compared with the lid closing time (about 30 to 40 seconds) by the conventional lid closing device. It can be shortened to about 1.

[0023]

As shown and described above, according to the automatic injection apparatus of the present invention, the lid is closed quickly and surely immediately after the injection of the foamed resin material, so that the mold can be molded in a time suitable for the foaming reaction. Can be closed. Therefore, cycle time can be shortened and productivity can be increased. In addition, since this device has a simple structure and does not need to be provided in every molding die installed in the line, the cost of product manufacturing and mold manufacturing can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of an automatic injection device according to an embodiment of the present invention.

FIG. 2 is a side view, partly in section, showing a state in which a foaming resin material is being injected into a foaming mold using the device of the present invention.

FIG. 3 is a plan view thereof.

FIG. 4 is a side view, partly in section, showing a state in which a lid closing fork member is activated.

FIG. 5 is a plan view thereof.

FIG. 6 is a side view showing a state where the lid closing is completed.

FIG. 7 is a plan view thereof.

[Explanation of symbols]

 10 Automatic Injection Device 11 Articulated Robot 12 First Rotation Shaft 13 Injection Head 14 Fork Holding Part 15 Lid Closing Fork Member 16 Arm 20 Second Rotation Shaft 30 Foam Mold 31 Lid 35 Molding Line 36 Handle P Foam Resin material

Claims (1)

[Claims] 1. An automatic pouring device in which a foaming resin material is sequentially poured into a moving foaming mold and the lid of the molding mold is closed after the pouring, and an arm which moves with respect to the foaming mold is provided. An articulated robot, a first rotation shaft provided on an arm of the articulated robot, a foamed resin material injection head provided movably in a horizontal direction by the first rotation shaft, and A fork holding part that rotates integrally with the moving shaft and has a second turning shaft; and a tip provided on the fork holding part and rotatably provided in the vertical direction by the second turning shaft of the holding part. An automatic injection device for a foamed resin material, which has an opened lid-closing fork member.