JPS62134233A - Molding machine with conveyance device - Google Patents

Abstract

PURPOSE:To automatically and surely convey the insert into the molding by the process of conveying the head, the removing section of which maintains the insert, to the position of divided mold face specified to be detected by the sensor, and controlling the movement of conveyance device with the input effecting the controlling device. CONSTITUTION:The lower mold 3b is moved forward by the cylinder 4, while the first and second heads 7a and 7b moves to right and the electromagnets 11 and 13 are lowered by the first and second cylinders 10 and 12. When the second lead switch 15 is ON, the electromagnets 11 and 13 are excited to magnetize the insert 20 and the molding part 21 and raised up. Simultaneously, the sensor 17 is ON and, if some of the inserts 20 not magnetized with the electromagnet 11, the first cylinder 10 is lowered again by the sensing signal of the sensor 17. The conveyance cylinder 6 moves to the left to set the electric magnet 13 OFF, and the molding part 21 falls to the chute 9. The insert 20 is positioned in the lower mold 3b, and the signal of second lead switch 15 is ON to turn the electromagnet 11 OFF.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a molding machine having a conveying device for placing an insert in a mold.

[Prior art] Conventionally, insert molding uses a commonly used injection molding machine, etc., where a person places an insert in a predetermined position in a mold, and after the molding process, the integrally molded body is removed from the mold. I was taking it out.

[@Aspects that the invention aims to solve] Conventionally, as mentioned above, inleats were placed manually, so management was done manually! There was a limit to the number of molding machines available, and a large number of man-hours were required. In addition, if a machine is used to transport inserts, there is a risk that defects such as inserts falling during transport may occur, increasing the incidence of defective products.Therefore, it is desirable to develop a device that can reliably transport inserts. was.

The present invention was made to meet this need, and an object of the present invention is to provide a molding machine having a conveyance device that can automatically and reliably convey an insert into a mold.

[Means for Solving the Problems] A molding machine having a conveying device of the present invention includes a mold clamping device that opens and opens at least one set of divided molds, and an injection molding device that supplies molding material to the clamped divided molds. a head having an apparatus, a detachable section for attaching and detaching an insert, and a sensor for detecting the presence or absence of an insert held in the detachable section; and moving the head to an insert supply position and one of the opened split molds. It is characterized by comprising a transport device and a control device that performs control based on input from the sensor during movement by the transport device.

As the mold clamping device, a conventional device driven by hydraulic pressure or the like can be used as is. The split molds that are opened and closed by this mold clamping device are also the same as before.
One or more sets of split molds are opened and closed by one mold clamping device.

The injection device is a device that supplies molding materials such as resin and rubber into the split molds, and a conventional injection molding machine or the like can be used as is.

The head has a detachable section and a sensor. This attachment/detachment part has the function of holding and transporting the in-sheet, releasing the insert at a predetermined position, and arranging it in the split mold, and can be configured with a chuck or the like. In addition, when the insert is formed of a magnetic material, it is preferable that the attachment/detachment part is constituted by an electromagnet. Switch 0N-OF
This is because F allows for easy attachment and detachment. It is also preferable to have a plurality of attachment/detachment parts and to remove a plurality of inserts at the same time.

The sensor detects whether or not the insert is held in the removable part, and various types such as a phototube and a proximity sensor can be used. Generally, the same number of sensors as the number of detachable parts are used.

The conveying device is a device that moves the head back t1 between the position where the insert is supplied and one of the divided molds interposed therebetween, and conveys the supplied insert to a predetermined position on the mold surface of the divided mold. . This conveying device hydraulically moves the head between the position where the insert is fed and one of the opened split molds.
Those that move using air pressure, those that move by being guided by a guide such as a rail installed between the position where the insert is supplied and one of the open split molds, or in some cases, a Geneva mechanism. Various devices can be used, such as those that utilize

Note that it is desirable to provide a product take-out part at a position a certain distance away from the ml attachment/detachment part of the head, and to transport the product take-out part in synchronization with the head by the above-mentioned transport device. In this way, when the head is in the insert supply position, the product take-out part is positioned on the mold surface of the split mold, and the head holds and conveys the insert, and at the same time, the product take-out part holds the molded object from the split mold. It becomes possible to transport. Then, at the same time as placing the insert into the split mold with the empty head,
The molded body can be taken out by the product unloading section, which improves efficiency in particular, and also makes it possible to automate the process of taking out the molded body. Therefore, it is possible to automate almost the entire molding process.

The control device controls the movement of the head by the transport device based on the input from the sensor. For example, a sensor is activated at the insert supply position to detect that the insert is held in the attachment/detachment section.

If the insert is not held, the movement to the split mold is made to wait until the attachment/detachment section securely holds the insert. In this way, the insert can be reliably held in the attachment/detachment section, and the insert can be reliably transported to the split mold.

Also, when placing the insert at a predetermined position on the split mold surface,
For example, if the attachment/detachment part is an electromagnet, magnetism may remain in the insert or the attachment/detachment part even if the current is cut off, and the insert may be magnetized to the attachment point 182IgI and not be placed in the predetermined position of the split mold. In order to prevent such problems, the sensor is activated when the attaching/detachable section moves away from the split mold surface after placing the insert on the split mold surface. If the insert is magnetized in the attachment/detachment section, movement to the inlet supply section is made to wait until the in-sheet is securely placed. In this way, the in-sheet can be reliably placed in the split mold, and the generation of defective products can be prevented.

[Function] In the molding machine having the conveyance device of the present invention, the llllR portion of the head holds the insert at the insert supply position, and the conveyance device conveys the head to the position of the mold surface of the split mold. Then, by separating the insert from the removable part at the predetermined position,
The insert is placed in place in the split mold. Further, a sensor provided in the head detects whether or not the insert is held in the attachment/detachment section, and the control device reverses the movement of the conveyance device by human power.

[Effects of the Invention] According to the molding machine having the conveying device of the present invention, the insert is held in the detachable portion and conveyed to the divided molds by the conveying device. Therefore, it is possible to automate the insert placement process, which was conventionally performed manually, and it is possible to reduce costs by reducing the number of man-hours. Also sensor and tlJ II
I-mounting allows the insert to be reliably placed at a predetermined position on the mold surface of the split mold. Therefore, the occurrence of defective products due to incorrect placement of inserts can be reliably prevented in advance. Furthermore, by providing a product take-out part at a position a certain distance away from the attachment/detachment part of the head, it is possible to automate the take-out of the product, and it is possible to fully automate the molding process.

[Example] The present invention will be specifically explained below based on the corrected drawings.

1 and 2 show a front view and a side view, respectively, of a molding machine according to an embodiment of the present invention. This molding machine is used to mold a resin molded body having a metal cylindrical insert.

This molding machine has a mold clamping cylinder 2 which is mounted on the upper part of the molding machine base 1 and moves up and down by hydraulic pressure.
an upper mold 3a fixed to the tip of the upper mold 3a, a lower mold 3b fixed to the lower mold sliding cylinder 4 below the upper mold 3a and slidable in the front-rear direction (perpendicular to the plane of the paper in FIG. 1), and an upper mold 3a.
and a rubber injection device 5 for injecting rubber into the cavity formed by the lower mold 3b, and a conveying cylinder 6 provided above the lower mold 3b, which is movable in left and right directions (parallel to the plane of the paper in FIG. 1). The first head 7a and the first head 7
A second head 7b is fixed to the base body 1 and is movable in the left-right direction in synchronization with the first head 7a, a magazine 8 is fixed to the base body 1 below the position where the first head 7a has moved to the right end, and the second head The chute 9 is fixed to the base body 1 below the position where the chute 7b has moved to the left end.

A first cylinder 10 is fixed to the first head 7a. Four electromagnets 11 are provided at the tip of the first cylinder 10, and are movable in the vertical direction by driving the first cylinder. Further, a second cylinder 12 is fixed to the second head 7b, and an electromagnet 13 is similarly movable up and down. Further, the first cylinder 10 includes a first reed switch 14 that detects when the electromagnet 11 is positioned at the upper end, a second reed switch 15 that detects when the electromagnet 11 is positioned at the lower end, and a second reed switch 15 that detects when the electromagnet 11 is positioned between the upper and lower ends. 3rd reed switch 1
6 are provided, and sensors 17 each consisting of a transmission type phototube are installed near the four electromagnets 11. As shown in FIG. 3, the sensor 17 is constructed so that light is blocked only when the insert 20 is magnetized to the electromagnet 11.

The operation of the molding machine configured as described above will be explained below. This operation is also shown in the time chart of FIG.

Four inserts 20 are placed in the magazine 8 at predetermined positions, and after vulcanization molding, the upper mold 3a and the lower mold 3b are opened, and the molded body 21 is present in the lower mold 3b. I will explain from. From this state, the lower die 3b is first moved forward by the lower die slide cylinder 4, and at the same time, the first head 7a and the second head 7b are moved to the right by driving the conveying cylinder 6.

The electromagnets 11.13 are also lowered by the first cylinder 10 and the second cylinder 12.

When the first head 7a is at the right end position and the electromagnet 11.13 is at the lower end, the second reed switch 15 is turned on.
After receiving that signal, the electromagnet 1
1.13 is excited, insert 20 and molded body 21
are magnetized to the electromagnets 11 and 13, respectively. At this time, the sensor 17 is turned on at the same time, and the signal is transmitted to the control I.
K[ is input.

The electromagnet 11.13 is then raised by the first cylinder 10 and the second cylinder 12. However, if there is an insert 20 that is not magnetized by the electromagnet 11, the first cylinder 10 is lowered again by the transverse ratio signal of the sensor 17, and the insert 20 is magnetized. When all four inserts 20 are magnetically connected, the first cylinder 10 rises and is located at the upper end.

Next, when the conveyance cylinder 6 is shifted to the left and the second head 7b is located at the left end, the electromagnet 13 is turned off and the molded body 21 falls into the chute 9 and is taken out.

Further, the first cylinder 10 is lowered and the electromagnet 11 is located at the lower end. At this time, the position of the insert 20 is exactly the insert placement position of the lower mold 3b, and at that position, the ON signal of the second reed switch 15 is activated. The r2 magnet 11 is turned off.

The first cylinder 10 then rises, but the insert 20
In some cases, the magnet itself is excited, magnetizes the electromagnet 11, and rises together. Therefore, in this embodiment, even if the insert 20 falls off from the electromagnet 11 and falls into the lower mold 3b, it is ensured that the insert 20 is placed correctly until the electromagnet 11 reaches a certain height. A third reed switch 16 is provided at the position of the first cylinder 10 corresponding to the position where the sensor 17 is turned on until the third reed switch 16 is turned on.
011:LK is maintained.

That is, the sensor 17 monitors whether the insert 20 remains magnetized to the electromagnet 11 until the first cylinder 10 is lowered and the insert 20 is placed in a predetermined position on the lower mold 3b. After the insert 20 is placed, when the third reed switch 16 is turned on, it is detected that the insert 20 is not magnetized to the electromagnet 11. If the insert 20 is magnetized to the N magnet 11 when the third reed switch 16 is turned on, an alarm is issued and the operation of the first cylinder 10 is put on standby. If the insert 20 is not magnetized to the N magnet 11 when the third reed switch 16 is turned ON, the arrangement has been completed normally and the sensor 17 is turned OFF.
As a result, the first cylinder 10 rises to the upper end.

Next, the lower mold 3b is moved back by the lower mold sliding cylinder 4, and then the upper mold 3a is lowered and clamped by the mold clamping cylinder 2, and rubber is injected from the rubber injection wave r15 and heated and pressurized. Insert molding is performed. Then, the mold clamping cylinder 2 rises, the mold is opened, and the first stage of molding is performed.
The cycle is complete.

[Brief explanation of drawings]

1 to 4 relate to a molding machine according to an embodiment of the present invention, FIG. 1 is a front view thereof, FIG. 2 is a side view thereof,
FIG. 3 is a sectional view of the conical part of the sensor mounting section, and FIG. 4 is a time chart illustrating the operation of the molding machine. In the figure, 1 is a molding machine base, 2 is a mold clamping cylinder, 3a and 3b are upper and lower molds, 4 is a lower mold slide cylinder, 5 is a rubber injection device, 6 is a conveyance cylinder, 7a and 7
b is a first head and a second head, 8 is a magazine, 9 is a chute, 10 and 12 are a first cylinder and a second cylinder, 11 and 13 are electromagnets, 14, 15, and 16 are a first reed switch and a second reed switch, respectively. Reed switch,・
A third reed switch, 17 a sensor, 20 an insert, and 21 a molded body.

Claims (3)

[Claims] (1) A mold clamping device that opens and closes at least one set of split molds, an injection device that supplies molding material to the clamped split molds, a detachable section that attaches and detaches the insert, and an insert that is held in the detachable section. a head having a sensor that detects the presence or absence of the head; a conveyance device that moves the head to an insert supply position and one of the opened split molds; and control that performs control based on input from the sensor during movement by the conveyance device. A molding machine having a conveying device characterized by comprising: (2) The head has a product take-out part located a certain distance away from the attachment/detachment part, and the product is held by the product take-out part in synchronization with the holding of the insert by the attachment/detachment part. A molding machine with a conveying device. (3) A molding machine having a conveyance device according to claim 1, wherein the attachment/detachment part is constituted by an electromagnet.