JPH06179Y2 - Knockout device of ironing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a knockout device for an ironing machine.

(Prior Art) Generally, when forming a spline on a cylindrical portion of a cylindrical work (for example, a clutch drum of an automatic transmission), an ironing machine as shown in FIG. 5 has been widely used. .

This ironing machine is configured to fit a cylindrical work W ', and is configured to support a ring-shaped die 1'having a shape portion 1a' for ironing on the outer peripheral surface and the die 1 '. A jig for ironing forming A including a supported support cylinder 2 ′ and a knockout member 3 ′ that acts so as to separate the work W ′ in the support cylinder 2 ′ after the completion of the ironing process from the die 1 ′. A pair of support rolls 23 ', 23' and a pair of support rolls 2 which are disposed so as to face each other so as to sandwich the "and the die 1".
Forming rollers 24 ', which are rotatably supported by 3'and 23', respectively.
24 'and an ironing tool B', B ', and a spline formed along the shape portion 1a' of the die 1'on the cylindrical portion of the work W'by the forming rollers 24 ', 24'. It is designed to be ironed.

(Problems to be Solved by the Invention) In the above-described conventionally known ironing machine, the die 1 '
Is fixed to the support cylinder 2'by mounting bolts 25 ', 25' ..., On the other hand, a knockout member 3'is connected to a driving means (not shown) and a knockout rod 11 'and the knockout rod 11'. Since it is composed of a knockout head 13 'that is connected to the tip end through a connecting bolt 12' and is in contact with the work W ', for example, when the diameter of the work W'is changed, etc. If it becomes necessary to replace 1 ', the mounting bolt 25',
The complicated work of unscrewing 25 '... and the connecting bolt 12' is required, which is a bottleneck in improving workability.

The present invention has been made in view of the above points, and an object of the present invention is to make it possible to also perform die exchange by utilizing knockout drive of a work.

(Means for Solving Problems) In the present invention, as means for solving the above problems,
A ring-shaped die configured to receive a cylindrical work and having an outer peripheral surface having a shape portion for ironing, a support cylinder configured to insert and support the die, and a support cylinder disposed inside the support cylinder. In an ironing machine equipped with a knockout member that acts so as to separate the work after the ironing process from the die, and a driving means for operating the knockout member, in the support cylinder, the die is supported. A clamp member which is operated to be clamped or unclamped with respect to the first member, is arranged to be urged in the clamp direction by a spring, and the driving means knocks out the knockout member. Is configured to be controlled in a two-step stroke with a second operation stroke for operating in the unclamping direction.

(Operation) In the present invention, the following effects can be obtained by the above means.

That is, in the above ironing machine, a spline is formed on the work fitted in the die by ironing. However, when the spline processing is completed, the work is moved by the operation of the knockout member by the first operation stroke of the driving means. You will be forced to leave the dice. On the other hand, when the die needs to be replaced by changing the diameter of the work, the clamp of the die with respect to the support cylinder is released by the operation of the clamp member in the unclamping direction by the second operation stroke of the driving means. Becomes
That is, the two-step stroke control of the drive means allows the knockout member or the clamp member to be selectively operated, whereby the knockout of the work or the exchange of the die can be easily performed.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the ironing machine of the present embodiment is provided with an ironing jig A on which a cylindrical work W is fitted, and an ironing jig A facing each other so as to sandwich the ironing jig A. , An ironing tool B, which moves forward and backward along the ironing jig A.

The ironing jig A is configured to fit the work W, and is configured to insert and support the ring-shaped die 1 having a shape portion 1a on the outer peripheral surface for ironing, and the die 1. Support cylinder 2, a knock-out member 3 in the support cylinder 2 that moves forward and backward, and acts to separate the work W after the ironing process is completed from the die 1 by the forward movement, and the knock-out member 3 moves forward. And a driving means 4 for driving the dies 1 on the outer peripheral side of the knockout member 3 in the support cylinder 2 so as to clamp or unclamp the die 1 with respect to the support cylinder 2. The clamp member 5 is arranged so as to be biased in the clamp direction by a spring 6.

The clamp member 5 is disposed in the support cylinder 2 so as to be able to move forward and backward and is urged by the spring 6 in the retracting direction (in other words, the clamp direction), and the clamp cylinder 7 is provided on the outer periphery of the tip of the clamp cylinder 7. Projected outward engaging projections 7a, 7a
(See FIG. 4) A ring-shaped clamp metal fitting 8 is detachable with respect to the die 1 and press-fixes the die 1 to an engagement step portion 2a formed at the tip of the support cylinder 2. . The clamp cylinder 7 is provided on the inner peripheral side of the clamp metal fitting 8.
The outward engaging projections 7a, 7a on the side of the clamp tube 7 are integrally provided with inward engaging projections 8a, 8a (see FIG. 4) which are engaged or disengaged. The die 1 is clamped by the urging force of the spring 6 in a state where the fitting convex portions 7a, 7a and the inward engaging convex portions 8a, 8a on the side of the clamp metal fitting 8 are engaged with each other. The clamp metal fitting 8 includes the outward engaging protrusions 7a, 7a and the inward engaging protrusions 8a,
It is designed such that it can be detached from the clamp cylinder 7 in a state where it is disengaged from 8a. Reference numeral 9 is a spring receiver, and 10 is a positioning notch for positioning the clamp fitting 8.

The knockout member 3 is connected to the knockout rod 11 which is arranged in the clamp barrel 7 so as to be able to move forward and backward, and is connected to the tip end portion of the knockout rod 11 via a connecting bolt 12 and fitted to the die 1. The knockout head 13 contacts the inner surface of the work W, and is biased by the return spring 14 in the backward direction (in other words, the returning direction).

The drive means 4 comprises a knockout cylinder 15 attached to the rear end side of the support cylinder 2 and a knockout pin 16 connected to a piston rod 15a of the cylinder 15, and the knockout pin 16 is A large-diameter portion 16a which is engaged with the rear end of the clamp cylinder 7 which constitutes the clamp member 5, and a rear end of the knock-out rod 11 which extends at the tip of the large-diameter portion 16a and constitutes the knock-out member 3. It is composed of a small diameter portion 16b that is pressed. Then, as the cylinder 15 extends, the knockout member 3 is first moved forward (in other words, knockout operation) by the small-diameter portion 16b of the knockout pin 16, but after the cylinder 15 performs a predetermined stroke operation. After the large diameter portion 16a of the knockout pin 16 is engaged with the rear end of the clamp barrel 7 of the clamp member 5, the clamp member 5 together with the knockout member 3 is operated forward (in other words, operated in the unclamp direction). ) It is designed to be punished. That is, the drive means 4 in the present embodiment is configured to be two-stage stroke control including a first operation stroke for knocking out the knockout member 3 and a second operation stroke for operating the clamp member 5 in the unclamping direction. -ing

At the rear end of the cylinder 15, three proximity switches 17, 18, for detecting the operating stroke of the cylinder 15,
19 are provided at predetermined intervals via a bracket 20, and at the rear end of the piston rod 15a of this cylinder 15,
A position detecting unit 21 that moves with the operation of the cylinder 15 is connected via a connecting rod 22. Here, the distance between the proximity switches 17 and 18 is the first operation stroke L ₁ of the cylinder 15 for knocking out the work W, and the distance between the proximity switches 18 and 19 is the unclamping state of the die 1. The second working stroke L ₂ of the cylinder 15 is defined as

Further, the ironing tool B is a support roll 23 that is movable by an appropriate drive means (not shown).
And a forming roller 24 rotatably supported at the peripheral edge of the supporting roll 23, and by moving the supporting rolls 23, 23 along the ironing forming jig A,
By the forming rollers 24 and 24, a spline along the shape portion 1a of the die 1 is ironed and formed on the cylindrical portion of the work W.

Next, the operation of the illustrated ironing machine will be described with reference to FIGS.
It will be described with reference to the drawings.

In this ironing machine, the work W is splined by the following procedure.

That is, after the work W is fitted on the die 1 of the ironing jig J, the supporting rolls 23, 23 are moved along the ironing jig A, whereby the ironing tool B,
By the forming rollers 24, 24 of B, the spline along the shape portion 1a of the die 1 is ironed and formed on the cylindrical portion of the work W. After that, retract the ironing tools B, B,
When the cylinder 15 is extended by the first operation stroke L ₁ , the knockout member 3 is moved forward (in other words, knockout operation) by the small diameter portion 16b of the knockout pin 16, as shown in FIG. The work W splined by 3 is separated from the die 1. Cylinder 15 at this time
The first operation stroke L ₁ of the position detection unit 21 that is interlocked with the piston rod 15a of the cylinder 15 is the proximity switch 1
It is performed by detecting by 8. The knockout member 3 is returned after the work W is knocked out by the urging force of the return spring 14.

Further, when the diameter of the work W is changed and the die 1 needs to be replaced, the cylinder 15 is extended by the second operation stroke L _2, and as shown in FIG. Clamping member 5 with large diameter part 16a
Is advanced (in other words, operated in the unclamping direction), and the clamped state of the die 1 by the clamp metal fitting 8 is released. At this time, the second operation stroke L ₂ of the cylinder 15 causes the position detecting portion 21 that is interlocked with the piston rod 15a of the cylinder 15 to move the proximity switch 19a.
It is performed by detecting. Under that state, remove the connecting bolt 12 and knockout head 1
After removing 3 from the knockout rod 11, the clamp fitting 8 is rotated to disengage the inward engaging projections 8a, 8a on the side of the clamp fitting 8 from the outward engaging projections 7a, 7a on the side of the clamp cylinder 7. The die 1 can be replaced by removing the clamp metal fitting 8 from the clamp barrel 7 in a combined state. Dice 1
After the replacement, the clamp metal fitting 8 is engaged with the clamp cylinder 7 and the outward engagement convex parts 7a, 7a on the clamp cylinder 7 side and the inward engagement convex parts 8a, 8a on the clamp metal fitting 8 side are engaged. After further fixing the knockout head 13 to the knockout rod 11 with the connecting bolt 12, the cylinder 15 is contracted so that the clamp member 5 clamps the die 1 and the knockout member 3 returns.

As described above, according to the present embodiment, by performing the two-step stroke control of the cylinder 15, it is possible to selectively knock out the work W by the knockout member 3 or release the clamped state of the die 1 by the clamp member 5. This makes it possible to perform the die changing work extremely efficiently.

In the above embodiment, the knockout pin 16 constituting the driving means 4 has the two-stage structure of the large diameter portion 16a and the small diameter portion 16b, and the large diameter portion 16a after the small diameter portion 16b is engaged with the knockout member 3 is used. The driving means 4 is configured to be stroke-controlled in two stages by engaging with the clamp member 5, but the knockout member 3 and the clamp member 5 are engaged after a predetermined stroke operation of the cylinder 15 and then synchronized. It may be configured to be movable.

Further, in the above embodiment, the clamp member 5 is constituted by the clamp barrel 7 and the clamp metal fitting 8 which can be engaged with and disengaged from the clamp barrel 7. The die can be configured to be detachable from the member.

Further, it is needless to say that the present invention is not limited to the configuration of the above-described embodiment and can be appropriately modified in design without departing from the gist of the invention.

(Effect of the Invention) As described above, according to the present invention, a ring-shaped die which is configured to be fitted with a cylindrical work and has an outer peripheral surface having a shape portion for ironing, and the die is fitted and inserted. A support cylinder configured to support, a knockout member that acts in the support cylinder to separate the work after completion of the ironing process from the die, and a driving means for operating the knockout member are provided. In the ironing machine, a clamp member for activating the die to clamp or unclamp the die with respect to the support cylinder is disposed in the support cylinder by a spring to urge the clamp member in the clamp direction, and the drive means is provided. A first operating stroke for knocking out the knockout member and a second operating stroke for operating the clamp member in the unclamping direction. Since it is configured to control the step stroke, the knockout of the work can be performed by selectively operating the knockout member or the clamp member by the two-step stroke control of the drive means without performing the complicated bolt removal work as in the conventional example. Alternatively, there is a practical effect that the dice can be exchanged very easily.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the structure of an ironing machine according to an embodiment of the present invention, and FIGS. 2 and 3 are longitudinal sectional views showing the state of the ironing machine shown in FIG. FIG. 4 is an exploded perspective view showing a main part of a clamp member in the ironing machine shown in FIG. 1, and FIG. 5 is a longitudinal sectional view showing a main part of a conventionally known ironing machine. 1 --- Die 1a-Shaped portion 2--Support cylinder 3 --- Knockout member 4--Driving means 5-・ ・ ・ ・ ・ ・ Clamping member 6 ・ ・ ・ ・ ・ ・ Spring W ・ ・ ・ ・ ・ ・ ・ ・ Work

Claims (1)

[Scope of utility model registration request] 1. A ring-shaped die configured to receive a cylindrical work and having an outer peripheral end surface having a shape portion for ironing, and a support cylinder configured to insert and support the die.
A knock-out material that acts to separate the work after completion of the ironing process from the die in the support cylinder,
A driving means for operating the knockout member, and a clamp member that operates to clamp or unclamp the die with respect to the support cylinder is attached in the clamp direction by a spring in the support cylinder. The driving means is arranged so as to be biased, and is configured to be controlled by a two-stage stroke including a first operating stroke for knocking out the knockout member and a second operating stroke for operating the clamp member in an unclamping direction. A knockout device for an ironing machine.