JP3065455U - Press forming machine - Google Patents

Abstract

(57) [Problem] To provide a pressure forming machine capable of preventing seizure caused by rubbing the back surface of a cutting cutter after cutting a linear pressure forming material. A quill unit (1) for supplying a linear forging material (X).
0 and feed roll 1 for feeding forged material X to quill section 10
And a cutting cutter 11 reciprocating in the direction perpendicular to the material supply direction on the front surface of the quill section 10, the feed amount of the forging material X by forward rotation of the feed rolls 14, 14. And a feed control mechanism 16 with a servo motor 15 capable of arbitrarily changing the feed timing. The control mechanism 16 drives and controls the feed roll, while the cutting cutter 11 cuts the forged material X passing through the quill section 10. Upon completion, the feed rolls 14, 1 are controlled by the control mechanism 16.
4 is rotated in the reverse direction to retreat the forging material X from the cutting cutter 11 by a predetermined amount.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a forging machine for cutting a linear forging material into a predetermined length and forging and forming a molded product from a cut blank.

[0002]

[Prior art]

 Conventionally, in a head forming machine for forming bolts, nuts, and other various parts, a quill section for supplying a linear head material from a lateral direction of the machine body, a feed roll for feeding the head material to the quill section, It has a cutting cutter that reciprocates in the direction perpendicular to the material supply direction at the front of the quill section. Then, the forged material supplied to the quill section by the feed roll is cut to a predetermined length by the reciprocating operation of the cutting cutter, and the cut blank is transferred to a material transfer device at a forward end position of the cutting cutter, and the material is transferred to the material transfer device. While being transferred by the transfer device, the molding is performed by forging with the die and the punch facing each other.

[0003]

[Problems to be solved by the invention]

 However, in the conventional press forming machine described above, the forged material supplied to the quill section by the feed roll is cut between the cutter and the quill section by the forward movement of the cutting cutter, and thereafter, the cutting cutter is moved forward. It returns from the end position and returns to the start position. However, since the feed roll is a one-way drive system, the back surface of the cutting cutter rubs the cut surface of the forged member remaining after cutting, and seizure occurs between the back surface of the cut cutter and the cut surface of the forged member. was there.

Accordingly, the present invention can prevent seizure caused by the back surface of the cutting cutter rubbing the cut surface of the forged member while easily changing the feed amount and the feed timing of the forged material by the feed roll. The task is to provide a forging machine.

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention provides a quill section for supplying a linear forging material, a feed roll for feeding the forging material to the quill section, and a material on the front of the quill section. In a press forming machine equipped with a cutting cutter that reciprocates in a direction perpendicular to the supply direction, a servo motor with a feed motor and a feed timing capable of arbitrarily setting and changing the feed amount and the feed timing of the forging material by the forward rotation of the feed roll is provided. A feed control mechanism is provided, and while the feed mechanism is driven and controlled by the control mechanism, when the cutter completes cutting of the forged material that has passed through the quill section, the control mechanism rotates the feed roll in a reverse direction to cut the forged material from the cutting cutter. The forging material is retracted by a predetermined amount.

[0006]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a press forming machine according to the present invention. The forging machine 1 includes a forming machine body 2 for forging a product having a predetermined shape, and a material supply unit 3 for intermittently supplying a linear forging material X by a predetermined length. The molding machine main body 2 is provided with a die block 5 at a predetermined position of a machine base 4, and a plurality of dies 6... The same number of punches 8... 8 are arranged on the front surface of the ram 7 that moves toward and away from the dies 6. A plurality of forging stations are constituted by these dies 6 and 6 and punches 8 and 8, and cutting is performed between the punches 8 and 8 and the dies 6 by moving the punches 8 and 8 by the ram 7. The blanks are formed in a stepwise manner from coarse to fine.

As shown in FIG. 2, a guide pipe 9 for guiding a forging material X made of a wire to the forging station is provided on one side of the die block 5, and a guide pipe 9 is provided at a front end of the pipe 9. Subsequently, a quill section 10 provided, a cutting cutter 11 for cutting the green material X supplied from the quill section 10 to a predetermined size, and a cutting blank X1 cut by the cutter 11 are cut from the cutter 11. A pusher 12 for pushing forward is provided.

The amount of the forging material X protruding from the quill part 10 is arbitrarily regulated by a stopper 13. Further, on the front side of the dies 6, a material transfer device (not shown) for receiving the cut blank X1 extruded from the pusher 12 and transferring the cut blank X1 over the forging station is provided.

On the other hand, the material supply unit 3 is disposed outside the rear end of the guide pipe 9, and the supply unit 2 includes feed rolls 14, 14 for transferring the forged material X to the quill 10, and the feed rolls 14. A feed control mechanism 16 with a servo motor 15 capable of setting and changing the feed amount and the feed timing of the forging material X by the forward rotation of the rolls 14, 14 is provided. The feed control mechanism 16 includes a control unit 16a for controlling the servomotor 15, and the feed amount and the feed timing of the forging material X can be arbitrarily set by the control unit 16a. Then, the feed rolls 14 and 14 are drive-controlled via the servo motor 15 of the control mechanism 16 to intermittently feed the forged material X by a fixed size.

When the cutter 11 completes cutting of the forged material that has passed through the quill section 10, the control unit 16 a of the control mechanism 16 rotates the feed rolls 14, 14 in the reverse direction to cut the remaining forged material from the cutting cutter 11. The material X is retracted by a predetermined amount. The feed speed of the feed rolls 14, 14 is controlled by the control unit 16a in synchronization with the drive speed of the molding machine body 2.

In FIG. 1, reference numeral 17 denotes a take-up device which holds a pressed material made of a wire in a wound state, and reference numeral 18 denotes a pre-feeding material X which has been taken up by the take-up device 17 in advance. And a pinch roll for guiding to the rollers 14 and 14.

Next, an operation in the case where the forged material X is cut into a predetermined length by the forging machine configured as described above and supplied to the molding machine main body 2 will be described.

First, a forged material X made of a wire rod wound by a winder 17 is inserted into feed rollers 14, 14 via a pinch roll 18, and in this state, the feed rollers 14, 14 are moved by arrows in FIG. Drive forward in the direction. In this case, the feed rollers 14, 14 are driven by a servomotor 15, which is driven and controlled based on the feed amount and the feed timing set by the control unit 16a of the feed control mechanism 16. The forging material X is supplied to the quill section 10 via the guide pipe 9 of the molding machine main body 2 by the supply pressure of the feed rollers 14, 14. As shown in FIG. 2, the forged material X extruded from the quill section 10 penetrates the cutting cutter 11 at the forward movement start position, abuts on the stopper 13 and stops, and the cutting length is determined. .

Next, the forged material X extruded from the quill unit 10 is moved forward by the cutting cutter 11 in a state where the tip thereof is in contact with the stopper 13, so that the quill unit 10 and the cutting cutter 11 It is cut to a certain size between. Then, the cutting blank X1 moves to the forward end position of the cutting cutter 11, where it is transferred to the material transfer device by the pusher 12, and transferred to each forging station via the transfer device. The cutting blank X1 is formed between the punches 8... 8 and the dies 6. Thereafter, the cutting cutter 11 returns from the above-described forward movement end position and returns to the forward movement start position.

In this case, when the cutter 11 completes cutting the forging material X that has passed through the quill unit 10, the control unit 16 a of the feed control mechanism 16 drives the servo motor 15 in the reverse direction as shown in FIG. Then, the feed rolls 14 and 14 are rotated in the reverse direction in the direction of the arrow in FIG. As a result, the contact between the remaining cut surface of the forged member X and the back surface of the cutting cutter 11 is released, and the back surface of the cut cutter 11 rubs the cut surface of the forged member X to cause seizure on the back surface of the cutter 11. Can be prevented.

[0016]

[Effect of the invention]

 As described above, according to the present invention, the drive of the feed roll is controlled by the feed control mechanism with the servo motor, which can freely determine the feed amount and the feed timing, so that the feed amount and the feed timing are adjusted according to the molded product. When the cutting cutter completes the cutting of the forged material that has passed through the quill part, the feed roll is reversely rotated by the feed control mechanism to retract the forged material from the cutting cutter by a predetermined amount. Can prevent the occurrence of image sticking by rubbing the cut surface of the forged member.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a press forming machine of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the pressure molding machine.

FIG. 3 is an explanatory view showing a state after cutting the same forged material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press forming machine 2 Molding machine main body 3 Material supply part 10 Quill part 11 Cutting cutter 14, 14 Feed roll 15 Servo motor 16 Feed control mechanism X Press forming material

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁷ Identification code FI 27/06

Claims (1)

[Utility model registration claims] A quill section for supplying a linear forging material;
A feed roll for feeding the forging material to the quill portion, and a forging machine having a cutting cutter reciprocating in a direction orthogonal to the material supply direction at the front of the quill portion, wherein A feed control mechanism with a servo motor that can arbitrarily change the feed amount and feed timing is provided, and the control mechanism drives and controls the feed roll, while the cutter cuts the forged material that has passed through the quill section. The forging machine, wherein the feed roll is rotated in reverse by the control mechanism to retract the forging material from the cutting cutter by a predetermined amount.