JPS647007Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for taking out a finished product in a forging machine that shapes a product through a plurality of consecutive steps.

(Prior art) Generally, this type of forging machine is equipped with a plurality of dies arranged in parallel and a plurality of punches corresponding to the dies, and the intermediate process product formed by the first die is transferred from the die. After being taken out, it is charged into an adjacent second die, where it is further molded, and then
It is removed and then loaded into an adjacent third die. By repeating these steps, the intermediate process product gradually approaches a finished product, and is molded with a die in the final process to become a finished product.

By the way, the transportation of intermediate process products between each process is carried out as follows. That is,
A transfer is provided which is capable of gripping the intermediate process product with two arms and transporting the intermediate process product to the front of the opening of an adjacent die,
After the intermediate process product is positioned in front of the die by the transfer, the intermediate process product is loaded into the die by the punch, but at this time, the two arms are kept open. In this way, the intermediate process product is loaded into the die by the punch, and when forming is completed, the knock pin advances and the intermediate process product is ejected from the die, so that the arm of the transfer in the subsequent process is moved during ejection. The arm returns to the front of the die, and when the ejection of the intermediate process product is completed and the intermediate process product is held by the arm, the arm closes and is transported to the next die. As the processing progresses and the intermediate process product is molded into a finished product using the last die, the finished product in the die is dropped into a chute.

The above is normal operation, but due to malfunction of the two arms in the transferor or failure of the intermediate process product to eject from the die, the intermediate process product may not be gripped by the transfer, and this intermediate process product may not be gripped. There was an incident where a process product was thrown into a chute for a finished product.

(Problem to be solved by the invention) As mentioned above, in the above conventional example, a chute for finished products is provided to prevent finished products from mixing with intermediate process products, but the chute for finished products is Since it is always in an open state, there is a problem in that intermediate process products ejected from the die located near the final process may jump into the chute for finished products.

In view of this problem, the present invention attempts to prevent intermediate process products from entering the chute for finished products.

(Means for Solving the Problems) In order to achieve the above object, the present invention aims to use a die in the final process among a plurality of dies that are arranged horizontally in parallel and are processed from an intermediate process product to a finished product as the process progresses. A cylindrical chute is provided below the ejection opening, and a press punch is attached to the upper part of the opening of the chute in conjunction with the forward and backward movement of a ram that moves forward and backward with respect to the die, and when opened, is operated by a knockout pin. The finished product that is ejected and falls from the die can come into contact with the chute and closes the opening of the chute when the chute is closed. The intermediate plate is comprised of a contact plate that closes the opening of the chute when the finished product is ejected and falls from the die, and a side plate that is attached to both sides of the contact plate. A lid is provided to prevent process products from being erroneously thrown into the chute.

(Function) By advancing the punch corresponding to the die in the final process, the intermediate process product in the die is formed into a finished product, and at the same time the ram to which the punch is attached starts to retreat, the lid body is moved toward the chute. The intermediate process product is ejected from the die by opening the opening.
After colliding with the lid in the open position, or directly without colliding with the lid, the ram continues to move backwards;
After the ram has moved a predetermined distance, the lid closes the opening of the chute. Therefore, even if an intermediate product falls toward the chute, the intermediate product will not collide with the lid. This will prevent it from entering the chute.

(Embodiment) The present invention will be explained below with reference to the embodiment shown in the drawings. As shown in FIGS. A finished product take-out device 7 is installed on the open side of the dice 1 to 5 of the continuous multi-stage header 6 and below the dice 5 in the final process.

The device 7 is equipped with a cylindrical chute 8, as shown in FIG. An introduction chute 8b having a rectangular cross-section and extending toward the die 5
It consists of. An opening 9 is provided at the distal end surface of the introduction chute 8b, into which a lid 11 swings via a shaft 10 rotatably attached to the upper end of the chute 8b. It is set up freely.

The lid body 11 is made up of a pair of fan-shaped side plates 12 whose central angles are substantially right angles, and an abutment plate 13 disposed between the side plates 12 and perpendicular to the side plates 12.
0 is attached to the corner part of the side plate 12, and when the opening 9 is closed, the contact plate 13 is attached to the opening 9.
It is designed to cover the

The base end of an air cylinder 14 is rotatably attached to one side of the introduction chute 8b via a pin 15, and the tip of the piston rod 14a of the air cylinder 14 is attached to the side plate 12 via a pin 15. It is rotatably attached via the The lid 11 rotates counterclockwise to open when the piston rod 14a extends, and rotates clockwise to close the opening 9 when the piston rod 14a contracts.

By the way, regarding the operation of the air cylinder 14,
This is controlled by an opening/closing timing mechanism 17. The timing mechanism 17 is
As shown in Figure 1, two of the aforementioned transfers
A transfer opening/closing camshaft 18 that controls the opening/closing timing of the book arm, a timing cam 19 fixed to the camshaft 18, and the timing cam 19.
A mechanical valve 20 whose operation is controlled by
The transfer opening/closing camshaft 18 rotates once per stroke of the ram 21, and when the timing cam 19 rotates and a predetermined portion of the cam 19 reaches a predetermined position, the mechanical valve 20 is activated, and the air cylinder 14 is activated. Note that the shaft to which the timing cam 19 is attached is not limited to the above, and may be the main gear shaft of the header 6.

Next, to describe the operation of the device having the above configuration, after inserting intermediate process products 22 such as bolts, piston pins, or valve retainers into the die 5 in the final process, the ram 21 located at the rear dead center is moved forward. Then, the intermediate process product 22 is pressed by the punch 21a to form a finished product. Ram 21
As shown by the two-dot chain line in FIG. 1, when the vehicle reaches front dead center, it moves to a backward stroke and begins to move backward.

If the operation timing of the mechanical valve 20 is set at the time when the ram 21 reaches the front dead center, the air cylinder 14 will be activated when the ram 21 reaches the front dead center, and the lid body 11 rotates to open the opening 9. When the piston rod 14a is fully extended, the contact plate 13 is set to be perpendicular to the surface of the opening 9. On the other hand, the knockout pin 23, which is slidably housed in the die 5, starts moving forward at the same time as the ram 21 starts to retreat, and the finished product after molding is transferred to the die 5 before the ram 21 reaches the rear dead center.
Extruded finished product 2
4 enters directly into the introduction chute 8b after colliding with the contact plate 13 or without colliding with it. When the ram 21 reaches the end dead center, the timing cam 19 has made one revolution, the mechanical valve 20 stops operating, and the air cylinder 14 also stops operating, so the piston rod 14a contracts. As a result, the lid body 11
closes the opening 9. Therefore, intermediate process products extruded from the dies 3 and 4 near the die 5 do not enter the introduction chute 8b. In addition, in FIG. 2, 25 is a chute used for conveying intermediate process products that fall without being gripped by the transfer.

(Effects) As is clear from the above, the present invention has a cylindrical chute with a lid that opens and closes in conjunction with the forward and backward movement of the ram, so the chute can be closed except when necessary. , intermediate process products do not enter the chute dedicated to finished products, and therefore mixing of intermediate process products into finished products is prevented.

Contamination of such intermediate process products occurs sporadically, so it is extremely difficult to detect through regular checks, and therefore, the impact on subsequent processes, etc.
The effect of preventing contamination is extremely large. Incidentally, the mixing rate of intermediate process products into finished products is
It used to be 0.005%, but the present invention has made it possible to reduce it to 0%.

In addition, the lid body is equipped with a contact plate against which the finished product can freely contact when it is opened, so even if the finished product is ejected from the die by the knockout pin and flies over the opening, there is no contact plate. Therefore, it will not be able to collide with the contact plate and jump over the opening, but will surely jump into the chute. Moreover, since the lid body is equipped with side plates, even if the flying direction of the finished product deviates to the side, it will not fly over the opening.

[Brief explanation of the drawing]

FIG. 1 is a front view of the device according to the present invention, FIG. 2 is a schematic end view of the header, and FIGS. 3a and 3b are front and side views of a cylindrical chute, respectively. 1 to 5... Dice, 8... Shoot, 9... Opening,
DESCRIPTION OF SYMBOLS 11... Lid body, 12... Side plate, 13... Contact plate, 21...
Ram, 21a...Punch, 23...Knockout pin, 24...Completed product.

Claims (1)

[Scope of Claim for Utility Model Registration] A cylindrical chute is provided below the protruding opening of the die in the final process among a plurality of dies that are arranged in a horizontal line and are processed from an intermediate process product to a finished product as the process progresses, At the upper part of the opening of the chute, there is a finished product that is linked to the forward and backward movement of a ram that moves a press punch forward and backward with respect to the die, and that is ejected by a knockout pin and falls from the die when opened. It consists of a contact plate that can be freely contacted and closes the opening of the chute when closed, and a side plate attached to both sides of the contact plate, and prevents intermediate process products flying from the die of the previous process from being erroneously thrown into the chute. A device for taking out finished products from a forging machine, characterized by being provided with a lid.