JPS60188214A - Conveying-reversing device for plastic molding - Google Patents

Abstract

PURPOSE:To perform conveyance and reversion for large-sized moldings including a car bumper and the like as well as to make them possible to be accurately positioned, by installing a rotatable reversing arm in position between uprightness and horizontality of a conveyor centering on a lower position of the outward side in a conveying direction of the conveyor. CONSTITUTION:When a bumper 5 as a molding is dropped and mounted on a conveyor 1 in an upward state at a dropping position 6, the bumper 5 is naturally rotated from A to B so as to become a stable attitude inside a guide frame at both sides of the conveyor 1, and being conveyed in an (a) direction at the stable attitude. When this bumper 5 arrives at it reversing position, a reversing arm 12 of a reversing device 8 is turned round in a (b) direction around a shaft 11, receiving the bumper 5 with a receiving claw 13, and further turned round in the same direction. Then, the reversing arm 12 is turned round up to almost nearly horizontality, and when the bumper 5 is made into a reversing attitude, a cover plate 23 is made to go to the left by a cylinder 25 whereby the bumper 5 is pressed by a positioning claw 14 and positioned correctly, then transferred to the next process by a takeout device.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveying and reversing device for plastic molded products.

For example, in a vertical injection molding machine that injection molds bumpers for automobiles, the bumpers are taken out facing upward, so
After the bumper is taken out by the unloader, it is necessary to invert and position it while transporting it to the next process. However, in the past, workers had to manually turn and transport the paper, making it difficult to automate the entire process and making it impossible to save labor.

Moreover, many of today's bumpers are larger and have an integrated design, making the entire bumper larger in shape, making it difficult for a single worker to handle it.

In view of these conventional problems, the present invention automatically transports and inverts large plastic molded products, reliably positions the inverted molded product at the desired position, and prepares it for the next process. It was provided for the purpose of making it easier, and its characteristics are: a con hair for conveying the plastic molded product, an inverting means for receiving and reversing the molded product on the con hair, and a a positioning means for positioning the molded product, and the reversing means is rotatable between an upright state and a substantially horizontal state on the outside in the transport direction, with the rotation center being at a lower position on the outside in the transport direction of the conveyor. a reversing arm; and a receiver provided on the reversing arm so as to receive the molded product on the conveyor when the reversing arm is raised, and to reverse the molded product and transfer it onto the reversing arm when rotating in the horizontal direction. and a positioning claw provided on the free end side of the reversing arm.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figures to FIG. 4, the symbol ``■'' indicates a conveyor belt, which is hung between a head pulley 3 and a tail pulley 4, which are rotatably mounted on both ends of the conveyor frame 2 on the support column 2a. First, a molded product, for example a bumper 5, taken out from an injection molding machine (not shown) is conveyed in the direction indicated by arrow a. The bumper 5 is taken out by an unloader (not shown) at a drop position 6 at the center of the injection molding machine and falls onto the con hair frame 1 in an upward position. Guide frames 7 are attached to both sides in the lateral direction. The bumper 5 has an oval shape as shown in FIG. 5, and its cross-sectional shape may be either an asymmetrical shape as shown in FIG. 6A or a symmetrical shape as shown in FIG. 6B.

Reference numeral 8 denotes a reversing means for receiving and reversing the bumper 5 on the conhair 1, and is provided on the support frame 9. This reversing means 8 has a rotating shaft 11 rotatably mounted on a support frame 9 by means of bearings 10 at both ends at a lower position on the outer side of the conveyor 1 in the conveying direction, and a rotating shaft 11 at both ends of the rotating shaft 11. A pair of horizontal reversing arms 12 are fixedly installed and are rotatable between an upright state and a substantially horizontal state on the outward side in the general feeding direction, and a bumper 5 on the conveyor 1 when the reversing arms 12 are erected. A receiving pawl 13 fixedly attached to each reversing arm 12 and a free end of each reversing arm 12 so that the bumper 5 is received and rotated in the horizontal direction is reversed and transferred onto the reversing arm 12. The receiving claw 13 and the short positioning claw 14 provided in parallel are provided on the side, and the reversing arm 12, the receiving claw 13, and the positioning claw 14 are formed in a substantially F-shape. The rotating shaft 11 is interlocked and connected to a reversing drive motor 17 on the support frame 9 via a winding transmission mechanism 15 consisting of a sprocket, chain, etc., and a reversing worm reducer 16. It is free. It is preferable that the rotation axis 11 is set at a position approximately 1/2 below the dimension L1 of the bumper 5 and approximately twice as far away in the conveyance direction from the rotation center of the tail pulley 4, and a pair of reversing arms The interval L2 between the bumper 5 is about 1/2 to 415 of the dimension L1 of the bumper 5, and the interval L3 between the receiving claw 13 and the positioning claw 14 is 1.1 to 1.6 of the dimension L1 of the bumper 5. It is desirable to approximately double the amount.

Reference numeral 18 denotes a receiving plate for receiving the bumper 5 which has been reversed by the reversing means 8. Guide rods 19 are provided on both sides in the lateral direction, and adjustment screws 20 are provided in the center, respectively, protruding downward. The adjustment screw 20 is inserted into the frame 9 so as to be slidable up and down, and is screwed into an adjustment handle 21 that is provided on the support frame 9 so as to be rotatable only.

Therefore, the position of the receiving plate IB can be adjusted up and down according to the dimensions of the bumper 5 by operating the adjustment handle 21. 22
is a first positioning means that determines the position of the pump 5 in the conveying direction, and is a first positioning means that determines the position of the pump 5 in the conveyor direction, and is a first positioning means that
3, this plate 23 is provided on a movable base 26 via a guide rod 24 and an air cylinder 25 so as to be able to move forward and backward in the transport direction, and the position of the movable base 26 is adjusted on the support frame 9 by an adjustment screw 27. It can be installed freely. The adjustment screw 27 can be rotated by being engaged with a ratchet wheel 29 at one end in the lateral direction via a winding transmission mechanism 28 or the like, and therefore, the position of the movable base 26 can be arbitrarily adjusted by operating the ratchet wheel 29. 30 is a second positioning means for determining the lateral position of the bumper 5, and has a pair of pressing bodies 31 provided on the support frame 9 facing outward in the lateral direction, each of the pressing bodies 31 being an air cylinder. 32, it can move in and out laterally.

The air cylinder 32 is attached to a horizontal movable base 33, and the movable base 33 is supported by a horizontal guide rod 34 supported by a support frame 9, and an adjustment screw 35
The position can be adjusted laterally. Adjustment screw 3
5 is rotatably supported by the support frame 9 and has an adjustment handle 36 at one end.

Reference numeral 37 denotes a reversal prevention bar, which is attached to each reversal arm 13.

Next, the operation of the above configuration will be explained. As shown in FIG. 7, when the bumper 5 falls onto the conhair 1 in an upward position at the falling position 6 and is placed on it, it is placed in a stable position.
Then, when the bumper 5 reaches the position of ■, the reversing arm 1 of the reversing means 8
2 rotates around the rotation axis 11 in the direction indicated by the arrow b, receives the bumper 5 on the conhair 1 with the receiving claw 13, and rotates in the direction indicated by the arrow b while supporting it between the reversing arm 12. I'll go. As a result, the bumper 5 also gradually rotates in the direction of the arrow b, and finally rotates inverted by its own weight from the position (■) where it is supported on the receiving claw 13, and is transferred onto the reversing arm 12 as shown in (■). Go. Then, when the reversing arm 12 rotates to a substantially horizontal state, the bumper 5 is completely reversed as shown in (3). Next, the air cylinder 25 of the first positioning means 22 is activated, and the bumper 5 is moved by the contact plate 23. Press it toward the positioning claw 14 side to position the bumper 5 in the transport direction as shown in (3). Subsequently, the air cylinder 32 of the second positioning means 30 is operated, and the pair of pressing bodies 31 press both ends of the bumper 5 outward to perform lateral positioning. At the time of this positioning, if the dimension L4 of the bumper 5 is small, adjust the receiving plate 18 so that it is located above the reversing arm 12 in the horizontal state, and place the bumper 5 in the inverted state on the receiving plate IB. Just leave it there. After the bumper 5 is inverted and positioned, the inversion arm 1 is moved as shown in FIG.
A pair of take-out members 38 are inserted under the bumper 5 on the laterally outward side of the bumper 5, and the take-out members 38 are raised to lift the bumper 5 and transferred from above the reversing means 8 to the next process.

In the above embodiment, the bumper 5 is exemplified as a molded product, but its shape may be arbitrary, and the shape is not limited to the bumper 5. Further, positioning after reversal is determined in relation to the next process, and it goes without saying that positioning only in the transport direction or the lateral direction may be sufficient depending on the configuration of the next process. It is desirable to attach a cushioning material such as plastic to at least the portions of the reversing arm 12, the receiving claw 13, the positioning claw 14, the contact plate 23, the pressing body 31, etc. that directly contact the bumper 5.

As described in detail in the embodiments above, according to the present invention, after the molded product is conveyed by the conveyor, it can be mechanically reversed by the reversing means.
Labor-saving can be promoted by automating the ta feeding and reversing work of molded products. In addition, the reversing means includes a reversing arm, a receiving pawl, and a positioning pawl, which can be rotated between an upright position and a substantially horizontal position, so it is structurally simple, and the reversing operation is simple. It is also superior in terms of certainty. Moreover,
Since the molded product is positioned by the positioning means after being turned over, it is easy to take out the molded product for the next process.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of the whole, Fig. 2 is a sectional front view of the same, Fig. 3 is a left side view of the right half, and Fig. 4 is a partially broken right side view. 5 is a perspective view of the bumper, FIGS. 6A and 6B are sectional views of the bumper, FIG. 7 is an explanatory view of the conveying and reversing operations, and FIG. 8 is an explanatory view of the bumper before being taken out. 1-conveyor, 5-bumper, 8-reversing means, 12-reversing arm, 13-receiving claw, 14-positioning claw, 22-
1st positioning means, 23-stop plate, 30-2nd positioning means. Patent applicant: Kobe Steel, Ltd. Honda Motor Co., Ltd.

Claims (1)

[Claims] 1. Equipped with a conveyor for conveying a plastic molded product, a reversing means for receiving and reversing the molded product on the conveyor, and a positioning means for positioning the reversed molded product,
The reversing means includes a reversing arm that is rotatable around a lower position on the outer side of the con hair in the conveying direction between an upright state and a substantially horizontal state on the outer side of the conveying direction, and a reversing arm that is rotatable around a lower position on the outer side of the con hair in the conveying direction. A receiving claw provided on the reversing arm and an M end side of the reversing arm so as to receive the upper molded product and reverse the molded product and transfer it onto the reversing arm when rotating in the horizontal direction. 1. A device for conveying and reversing plastic molded products, characterized in that it is equipped with a positioning claw provided in the holder.