JPH05293B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for automatically loading products taken out from an injection molding machine into pallets.

<Prior art> There are two ways to load the products taken out from the injection molding machine into the pallet: manually by an operator, and using an injection molded product supply device as disclosed in Japanese Patent Application Laid-Open No. 60-248519. There are some items that are automatically accumulated in a palette depending on the setting.

<Problems to be Solved by the Invention> Some of the products taken out from the injection molding device are defective. To detect good or defective products,
As shown in FIG. 4, a sensor 8 detects the internal pressure of an injection cylinder 7 that moves a screw 6 of an injection machine 5 that extrudes resin into a mold 4, and detects the filling pressure, and also detects the position of the screw 6. The screw position sensor 9 detects the filling amount, the timer detects the filling time, these detection signals are input to a comparison circuit, and if a defective product is detected, a buzzer is used to notify the user. is taken. Therefore, when products are loaded onto a pallet by a worker, the buzzer may be used to notify defective products, and the selection of defective products is done manually by the worker. bad sex,
It becomes a labor burden for the workers. Furthermore, since the loading work is completed in a few seconds out of a molding cycle of several tens of seconds, there is a lot of waiting time and waste. Furthermore, there is a problem that production cannot be performed during day and night shifts or during breaks, resulting in wasteful equipment operation.

On the other hand, in the device of JP-A No. 60-248519,
Although it is possible to automatically feed products onto pallets,
There is no disclosure of automation of the process of sorting out good and defective products taken out of an injection molding machine, and this also requires manual sorting by an operator.

An object of the present invention is to provide an automatic palletizing device that automatically sorts good and defective products taken out from an injection molding device and automatically loads good products onto pallets, thereby enabling unmanned production. It is to provide.

<Means for Solving the Problems> The characteristic structure of the present invention for achieving the above object is composed of an injection molding section, a product sorting and loading section, and a pallet conveying section, and the injection molding section has the following features: , an injection molding device having a means for detecting whether a product is good or defective, and an injection molding device that takes out a product from the injection molding device and conveys it to the product sorting and mounting section, and the product sorting and mounting section includes the injection molding device. A product that receives a product conveyed by the machine and is controlled to rotate forward or reverse based on the product good/defective product detection signal from the injection molding machine, and the good product is placed at a predetermined position and the defective product is discharged outside the machine. comprising a positioning conveyor, and a product loading device that moves between the product positioning conveyor and the pallet conveying section, grips the product positioned at the predetermined position, and directly or indirectly loads the product into the pallet, The pallet transport section is equipped with a pallet transport conveyor that transports pallets into and out of the product loading device.

<Function> With the above configuration, the present invention conveys the product taken out from the injection molding device by the product take-out device to the product positioning conveyor of the product sorting and loading section, and distinguishes between good and defective products from the injection molding device. Rotates the product positioning conveyor forward or reverse based on the detection signal,
Automatic sorting is performed in which good products are placed in a designated location and defective products are discharged outside the machine. Then, the good products positioned at a predetermined position are gripped by a product loading device and loaded onto a pallet either directly or indirectly via a product stacking and aligning means.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, 1 is an injection molding section, 2 is a product sorting and mounting section, and 3 is a pallet conveying section.

The injection molding section 1 includes a mold 4 and a mold 4.
an injection molding device consisting of an injection machine 5 for extruding resin; and a product positioning conveyor 12 of a product sorting and loading device 2, which takes out products W using the mold 4 and will be described later.
It has a product take-out device 10 for conveying the product to. As shown in FIG. 4, the injection molding machine includes an internal pressure sensor 8 of the injection cylinder 7 and a screw position sensor 9.
The controller determines whether the product W is good or not based on these detection signals and the time signal of the timer.
It is now capable of detecting defective products. Further, the product take-out device 10 is configured to move vertically up and down and horizontally reciprocate between the mold 4 and the product positioning conveyor 12.

The sorting and loading device 2 has the following configuration.
It has a product loading device 17 that travels while being guided by a guide rail 11 supported by a column, and a product positioning coveyor 12 is installed at the forward end portion of the product take-out device 10 directly below one end of the guide rail 11. ing. As shown in FIG. 2, the product positioning conveyor 12 is configured by an endless chain that moves around, and a jig 1 equipped with a guide 15 that guides the product W to the chain.
616 is attached. The jig provided with this guide 15 is attached at a plurality of locations depending on the type of product W. And the chain is jig 1
6 is moved to a product receiving position A from the product take-out device 10 and a delivery position B of the product loading device 17. In addition, when the defective product detection signal of the product W is detected, the reverse is performed, and the defective product is transferred from the chute 13 to the pallet 1 outside the machine.
It is also designed to perform an ejection operation at 4.

On the other hand, the product mounting device 17 is provided with fingers 18 for gripping the product W so as to be openable and closable.

Further, directly below the other end of the guide rail 11 is a portion where pallets 20 are carried in and out by the pallet conveyor 19 of the pallet conveying section 3.

Further, if necessary, an alignment table 23 for stacking products W is arranged between the loading/unloading part of the pallet 10 and the product positioning conveyor 12. A skewer bar 24 for skewering and arranging the products W is vertically provided on the alignment table 23.

The product W in the illustrated example is an automobile instrument panel, and in order to load this panel onto a pallet 20 without damaging it, a skewer rod 21 is used to hang the panel by skewering it using an opening in the panel.
are provided within the pallet 20. When conveying this pallet 20, the skewer bar 21 is placed in a horizontal direction so that no heavy pressure is applied to the panel of the product W suspended from the skewer bar 21. Also,
When mounting the panel of product W on the pallet 20, it is skewered onto the skewer rod 21 from above.
The reversing device 22 changes the attitude of the pallet 20 so that the skewer rods 21 are oriented vertically, and the pallet 20 is oriented horizontally again at the time of unloading. The device of the present invention is not limited to the above-mentioned instrument panel products, but can be applied to other molded products, and is not limited to the pallet 20 with a skewer bar.

Next, the operation of the present invention will be explained. Detects good and defective products when molding products using injection molding equipment,
The signal is stored in the controller. The molded product W is taken out from the mold 4 by a product takeout device 10 and conveyed to a product positioning conveyor 12.
At this time, the product positioning conveyor 12 moves the jig 16 corresponding to the molded product W to the product receiving position A.
I'm waiting at. Therefore, the product W transported by the product take-out device 10 is delivered to the jig 16. Here, based on the detection signal of whether the product W is good or defective stored by the controller, if the product is defective, the product positioning conveyor 12 is operated in reverse to move the product W on the jig 16 to the chute 13. It is dropped and discharged onto a pallet 14 outside the machine. If the product is good, it rotates forward and is positioned at the delivery position B of the product mounting device 17. The product W positioned at this delivery position B is gripped by the fingers 18 of the product mounting device 17, and if an alignment table 23 is provided, the product W is mounted on the alignment table 23. By repeating such a cycle, when a predetermined number of products W are stacked on the sorting table 23, the fingers 18 of the product loading device 17 grasp all the products W on the sorting table 23 and place them all at once into the pallet 20. be installed on. If the alignment table 23 is not provided, the products W received by the product positioning conveyor 12
The operation of directly loading the pallet onto the pallet 20 is repeated.

While the product loading device 17 loads the products W indirectly onto the pallet 20 via the alignment table 23 or directly onto the pallet 20, the product positioning conveyor 1
The second jig 16 is returned to the product receiving position A, and the injection molding device molds the product W and removes the product W.
The operations of taking out the products W and transporting them to the product positioning conveyor 12, sorting the products W into good and defective products, and positioning the non-defective products to the delivery position B are performed.

On the other hand, when the pallet 20 is full of products W, the pallet conveyor 3 moves the pallet conveyor 19 to the pallet conveyor 19.
This is then carried out and the empty pallet is carried into the product loading device. At this time, in the case of a pallet 20 having a skewer bar 21 as shown in the figure, the pallet 20 to be carried out
The reversing device 22 changes the attitude of the skewer bar 21 so that it is oriented horizontally, and the empty pallet, which has been carried in with the skewer bar 21 horizontally, is changed by the inverting device 22 so that the skewer bar 21 is oriented vertically.

Also, if the product W to be injection molded is changed,
The product positioning conveyor 12 is indexed by a command signal to a position where the jig 16 corresponding to the product W receives and positions the product W.

<Effects of the Invention> As described above, according to the present invention, it is possible to take out a product molded by an injection molding apparatus, sort out whether the taken out product is good or defective, discharge the defective product, load the good product into a pallet, and carry the pallet. Since all operations are performed automatically, unmanned operation is possible, reducing the number of workers and increasing production capacity. In particular, in the present invention, automatic sorting of good products and defective products,
The automatic discharge function for defective products solves the problems of conventional automatic palletizing equipment all at once, making full automation possible.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the overall configuration, FIG. 2 is a perspective view of a product positioning conveyor, FIG. 3 is a side view showing the operation of the product sorting and loading section, and FIG. 4 FIG. 2 is a cross-sectional view of the injection molding apparatus. 1... Injection molding section, 2... Product sorting and mounting section, 3
... Pallet conveyance section, 4 ... Mold, 5 ... Injection machine, 10 ... Product take-out device, 12 ... Product positioning conveyor, 16 ... Jig, 17 ... Product loading device, 18 ... Finger, 19... Pallet transport conveyor, 20... Pallet.

Claims (1)

[Scope of Claims] 1. Consisting of an injection molding section, a product sorting/loading section, and a pallet conveying section, the injection molding section includes an injection molding device having a means for detecting whether the product is good or defective; and a product take-out device that takes out the product from the device and conveys it to the product sorting and loading section, and the product sorting and loading section receives the product conveyed by the product take-out device and receives the product from the injection molding device. A product positioning conveyor is controlled in forward and reverse rotation based on the good and defective product detection signals, and the product is moved between the product positioning conveyor and the pallet conveyance section, where good products are placed in a predetermined position and defective products are discharged outside the machine. and a product loading device that grips the product positioned at the predetermined position and directly or indirectly loads the product into a pallet, and the pallet transport section carries the pallet into and out of the product directly below the product loading device. An automatic palletizing device for injection molded products, characterized by being equipped with a pallet conveyor.