JPH0911271A - Automatic insert molding machine - Google Patents

Abstract

(57) [Summary] [Purpose] An automatic insert molding machine that can perform efficient molding in a short time and improve productivity by continuously and automatically conveying metal pieces punched by a press. To provide. [Structure] The automatic insert molding apparatus 1 is provided with a first sensor for detecting the completion of punching of the metal piece 15 by the press 3, and the operation signal is received from the control member by the detection signal of the first sensor to punch. Punched metal pieces 15
Is provided on the second transport member 4, a transfer member 6 is provided, and a second sensor for detecting the completion of the transfer by the transfer member is provided, and a control signal is generated by the detection signal of the second sensor. From the above, a transport signal is output to the second transport member 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically inserts a metal piece such as a contact brush or a contact ring used in a cord reel into a molding die to automatically form a composite piece in which the metal piece and the resin are integrated. It is related to the device.

[0002]

2. Description of the Related Art Conventionally, a press for punching a metal piece such as a contact brush or a contact ring, a conveying member for conveying the metal piece punched by the press to an injection molding machine, and the conveying member as the above-mentioned apparatus. There is known an injection molding machine that inserts the metal piece sent by the method (1) into a molding die to form a composite part piece in which the metal piece and the resin are integrated, and a control member that controls each of these members.

[0003]

However, although the conventional apparatus has a control member, this control member is for independently controlling the operation of the press, the conveying member, or the injection molding machine. However, for example, the transfer of the metal piece punched by the press from the press to the transfer member, the transfer by the transfer member, and the like are not the targets of control by the control member. Therefore, the transfer and the transportation as described above are arbitrarily performed by, for example, an operator, the molding by the injection molding machine cannot be performed in a timely manner, and the molding takes time, so that the efficient molding cannot be performed. There was a problem that productivity did not increase.

In view of the above, the present invention solves the above-mentioned conventional problems and continuously and automatically conveys metal pieces punched by a press to enable efficient forming in a short time and improve productivity. It is an object of the present invention to provide an automatic insert molding device capable of improving the above.

[0005]

In order to achieve the above object, the invention according to claim 1 is a first sensor for detecting the completion of punching of a metal piece by a press in the automatic insert molding apparatus as described above. And a transfer member for transferring the punched metal piece to the second transport member in response to the operation signal from the control member by the detection signal of the first sensor, and the transfer by the transfer member is completed. A second sensor for detecting the fact is provided, and the conveyance signal is output from the control member to the second conveyance member in response to the detection signal of the second sensor. According to the invention of claim 2, punching by a press comprises a plurality of steps according to claim 1, and the metal piece that has undergone this final step is detected by the first sensor, and the second sensor A plurality of metal pieces punched out by the transfer member are transferred and transferred to the transfer member.

[0006]

With the above-mentioned structure, the metal piece punched by the press is automatically operated by the transfer member when the first sensor, the second sensor and the control member are actuated. Transferred to the transport member, and this second
As soon as the transfer to the transport member is completed, it is automatically transported to the injection molding machine, so that the metal pieces can be continuously and automatically transported.

[0007]

1 is an overall schematic plan view of an automatic insert molding apparatus showing an embodiment of the present invention, and FIG. 2 is a schematic side view taken along the arrow A in FIG. The piece is made of resin and a metal contact brush as an electric contact part used for a cord reel. Reference numeral 1 denotes an automatic insert molding apparatus. The molding apparatus 1 includes a first conveyance member (not shown), a press 3, a second conveyance member 4, an injection molding machine 5, a first transfer member 6, The second transfer member 7 and so on.

The first conveying member is composed of an air feeder (not shown). The strip steel 13 is pulled out from a metal coil mounted on a reel stand (not shown) and the press 3 is pressed.
Transport in the direction. When the strip steel 13 conveyed by the air feeder reaches a fixed position of the press 3 supported by the frame 14, the press 3 punches a pair of metal contact brushes 15 having a predetermined shape and size from the strip steel. At the time of this molding, the contact brush 15 has three punching steps, and the contact brush 15 after the final step has the form shown in FIG.

The second transport member 4 comprises a transport carriage 16 which can be moved along a guide rail 17 which is linearly installed between the press 3 and the injection molding machine 5. 18 is a motor for the movement. The carrier truck 16 is capable of positioning and loading four contact brushes 15 on the upper surface thereof. Reference numeral 19 is a temporary holder for temporarily placing the contact brush 15 that has undergone the final process on the carrier truck 16 before transferring.

The first transfer member 6 is provided with transfer chucks 22 capable of vacuum-adsorbing the contact brush 15 at the front end and the middle of the moving rod 23, and is installed with the guide rail 17 sandwiched with respect to the press 3. There is. The movable rod 23 is a guide portion provided on the mechanism portion 24.
It is arranged so that it can be moved back and forth in the direction of the press 3 and vertically moved by being guided by 25, and the upper end of the operating rod 26 is engaged with its rear end. The lower end of the operating rod 26 is engaged with a cam 28 provided in the mechanism portion 24, and when the cam is rotated by the drive of the motor 30 via the chain 31, it swings around the fulcrum 32, Due to this swinging, the movable rod 23 moves back and forth, and slightly moves up and down. This retreat of the moving rod 23,
Further, by the vertical movement, the transfer chuck 22 provided at the front end portion of the moving rod 23 moves the contact brush 15 which has undergone the final process from the predetermined position of the press 3 onto the temporary placing table 19, and the transfer chuck 22 provided at the intermediate portion. Transfer the contact brush 15 on the temporary stand 19 to the carriage 16
It can be transferred to each of the above. Reference numeral 33 is a machine base on which the mechanical unit 24 is installed.

Although details of the second transfer member 7 are not shown, the contact brush 15 and the molded product (composite part 40) similar to the transfer chuck 22 of the first transfer member 6 can be vacuum-sucked. Multiple transfer chucks on the moving rod (4 in this example)
First, insert the guide rail 17 against the molding die 5
The transfer member 6 is installed in the opposite direction. The transfer chuck on the moving rod is moved from the top of the carriage 16 to the molding die 5
The contact point brush 15 can be supplied to the molding die 5 and the molded product can be taken out from the molding die 5.

The injection molding machine 5 has a molding die 37 on a turntable 36 that can be turned 180 ° as shown by the arrow, and a contact brush at a standby position X near the guide rail 17.
15 is supplied from the transfer chuck of the second transfer member 7 to its fixed position, and a series of mold clamping, injection (supply of resin), cooling, and mold opening is performed at a molding position Y rotated by 180 ° from that position. After operation, the contact brush 15 was inserted, as shown in FIG.
A composite piece 40 in which the contact brush 15 and the resin 38 are integrated is molded as shown in FIG.

The operation of the automatic insert molding apparatus 1 having the above structure will be described with reference to the time chart shown in FIG. The steel strip 13 is intermittently pulled out from the metal coil on the reel stand by an air feeder and conveyed, and when it reaches a fixed position of the press 3, the press 3 punches and forms a contact brush 15 from the steel strip. This punch is 3
When the third punching which is the final step is completed, this is detected by a sensor (not shown), and the first transfer is performed by control from a control member (not shown) by a detection signal from the sensor. The moving rod 23 of the member 6 moves forward and moves up and down, and the transfer chuck 22 at the front end chucks the contact brush 15 punched out first by vacuum suction, moves backward, and moves up and down onto the temporary stand 19. Reprint. Since this transfer is performed every punching by the press 3, in the next transfer, the transfer chuck 22 at the front end transfers the contact brush 15 punched next time onto the temporary placing table 19, and at the same time, at the intermediate part. A carrier truck 16 in which the replacement chuck 22 stands by for the first contact brush 15 placed on the temporary holder 19 as shown in FIG.
Transfer to the top. Then, such transfer is sequentially repeated.

Next, when the first contact brush 15 is transferred onto the transfer carriage 16, the transfer carriage 16 is moved slightly forward so that the next contact brush 15 can be transferred. Then, four contact brushes 15 are transferred onto the carrier truck 16 and
When the transfer to all is completed, this is detected by a sensor (not shown), and the transfer carriage 16 is transferred along the guide rail 17 in the direction of the injection molding machine 5 under the control of the control member according to the detection signal from the sensor. To be done. Carrier truck 16
Is stopped at a fixed position, the moving rod of the second transfer member 7 moves forward and vertically, and the transfer chucks provided on the moving rod move all the contact brushes 15 on the carriage 16 by vacuum suction at the same time. It is chucked and loaded into a fixed position of the molding die 37 of the injection molding machine 5 located at the standby position X of the turntable 36 and transferred.

When the supply of the contact brush 15 to the fixed position of the molding die 37 is completed, the turntable 36 is rotated 180 ° clockwise.
As a result, the molding die 37 is rotated from the standby position X to the molding position Y. At the molding position Y, the molding die 37 operates as described in paragraph 0012, and the contact brush 15 is inserted to mold the integrated composite piece 40. When the molding of the composite piece 40 is completed, the turntable 36 is now rotated counterclockwise by 180 °, whereby the molding die 37 is moved from the molding position Y to the standby position X again. When the molding die 37 reaches the standby position X, the transfer chuck provided on the moving rod of the second transfer member 7 chucks all the composite parts 40 in the molding die 37 at the same time by vacuum suction to convey the carriage 16 Carry it near where it was stopped, take it out, and discharge it onto the tray (not shown) installed there. At the time of this discharge, a sensor (not shown) discriminates between the good product and the bad product of the composite part 40 in the tray and sorts them. If the product is a good product, it is sent from the tray to the left side in FIG. If the product is dropped and defective, it is sent from the tray to the right side in FIG.

As described above, one cycle is completed, and such an operation will be successively performed in accordance with the time chart shown in FIG. In the above operation, the operation timing of each member is performed by the control member by detection by a sensor (not shown) other than that described above.

[0017]

The inventions of claims 1 and 2 are as described above, and since it is possible to continuously and automatically convey a metal piece punched by a press, it is possible to reduce the time required as compared with a conventional apparatus. There is an excellent effect that efficient molding can be carried out without any cost and the productivity can be remarkably improved.

[Brief description of the drawings]

FIG. 1 is an overall schematic plan view of an automatic insert molding apparatus showing an embodiment of the present invention.

FIG. 2 is a schematic side view seen along the arrow A in FIG.

FIG. 3 is a plan view showing a form of a contact brush that has undergone a final process by pressing.

FIG. 4 is a plan view showing a form of a composite piece molded by a molding die.

FIG. 5 is a time chart showing the overall operation.

[Explanation of symbols]

 1 Automatic Insert Molding Device 3 Press 4 Second Conveying Member 5 Injection Molding Machine 6 First Transfer Member 7 Second Transfer Member 13 Strip Steel 15 Contact Brush 16 Conveyor Cart 22 Transfer Chuck 23 Transfer Rod 25 Guide Rod 26 Actuating rod 28 Cam 30 Motor 36 Turntable 37 Molding die 38 Resin 40 Composite piece

Claims (2)

[Claims] 1. A first conveying member for conveying a steel strip drawn from a metal coil, and a metal piece punched from the steel strip when the steel strip conveyed by the first conveying member reaches a predetermined position. A press, a second conveying member that conveys the metal piece formed by this press to an injection molding machine, and the metal piece that is conveyed by this second conveying member is inserted into a molding die so that the metal piece and the resin are separated. In an automatic insert molding apparatus equipped with an injection molding machine for molding an integrated composite piece and a control member for controlling each of the members, a first sensor for detecting the completion of punching of a metal piece by a press is provided. And a transfer member for receiving the operation signal from the control member in response to the detection signal of the first sensor and transferring the punched metal piece to the second transport member.
The second detecting that the transfer by this transfer member is completed
The above-mentioned sensor is provided, and the conveying signal is output from the control member to the second conveying member according to the detection signal of the second sensor. 2. The punching by a press comprises a plurality of steps, and the metal piece which has undergone this final step is detected by the first sensor, and the transfer member is attached to the second conveying member. The automatic insert molding apparatus according to claim 1, wherein a plurality of metal pieces punched and formed by the above are transferred and conveyed.