JPS5925577Y2 - Blank conveyor in press - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blank conveying device for an idle process in a press.

The conventional method is to provide a step on the butshu bar, and when sending the first step blank to the next process, avoid the feed line of the first step blank and place it against the backstop to position it.Another method is to use a one-way rotating hinge where the blank is hooked. This is a method in which the blank gets caught in the feeding direction, and the catching subsides when returning.

In these two methods, the blank may scratch the top surface of the chute or the top surface of the bushing bar during transportation.

Furthermore, as the conveyance speed increases, the blank moves beyond the stop position due to its inertia, resulting in a lack of stability in the stop position, resulting in poor positional accuracy.

The purpose of the present invention is to eliminate these drawbacks and provide a blank conveying device for a press that has good positional accuracy for conveyed blanks, can improve conveying speed, and does not cause scratches on the blanks because they do not slide on the chute. It's about doing.

Examples will be described below with reference to the drawings.

In Figures 1, 2, and 3, a fixed chute 5 fixed to the machine body is provided between the blank receiving part ■ and the first mold V of the press, and a blank receiving part 5 is provided above the fixed chute 5. Idle stage II at intervals that match the conveyance pitch of feed bar 1.

III and IV are provided.

Bush bars 7 to which positioning blocks 6 are fixed in accordance with the conveyance pitch are provided on both the front and rear sides of the fixed chute 5.

A horizontal lift base 8, which receives the lower surface of the bushing bars 7 and has a guide plate 9 fixed to the upper surface for guiding each bushing bar 7 in the transport direction, is provided near the bottom of the idle stage II of the fixed chute 5.

On the lower surface of the lift base 8, there are four bars 1 that fit into four guide posts 13 set up on the floor so that they can move up and down.
6 is fixed.

In addition, a rack 17 is erected on the lower surface of the lift base 8.
The rack 17 is engaged with a pinion 14 fixed to a rotating shaft 12 connected to the clamp unit 11.

When the clamp unit 11 applies a clamping motion to the feed bars 1, that is, a motion in which a pair of feed bars 1 approach each other, the rack 17 is moved in the "-" direction by the pinion 14 rotating via the rotating shaft 12, and the lift base 8 is raised, and the upper surface of the bushing par 7 slidably received thereon is pushed up slightly above the upper surface of the fixed chute 5.

Conversely, when the clamp unit 11 applies an unclamping motion to the feed bar 1, the lift base 8 descends, lowering the upper surface of the pusher 7 slightly below the upper surface of the fixed chute 5.

A hole 7a is provided at the end of the bushing par 7 on the conveying direction side.

A traverse 2 is installed at the rear end of the feed bar 1 in a direction perpendicular to the feed bar 1, and is connected to each feed bar 1 by a connecting block 19 so as to be slidable in the clamp/unclamp direction.

Two pins 15 are provided upright on the traverse 2, and are fitted into the holes 7a of the bushing par 7 so as to be movable up and down.

Next, we will discuss the effect.

When the feed bar 1 of the press reaches the return end,
A blank 4 punched on a blanking stage or supplied from a blank supply device is positioned and placed between positioning blocks 6 fixed to the upper surfaces of two bush pars 7 that are recessed in the blank receiving part (2).

Next, the feed bar 1 is given a clamping motion by the clamp unit 11, and at the same time the rotating shaft 12 and the pinion 1 are
4. The lift base 8 is raised via the rack 17, and the bushing par 7 is pushed up.

FIG. 1 shows the state at this time.

Next, the feed bar 1 enters an advance step, and the pusher 7 slides on the lift base 8 via the pin 15 of the traverse 2, performs an advance motion together with the feed bar 1, and reaches the advance end.

At this time, the blank 4 placed on the pusher 7 is positioned directly above the idle stage II.

Next, the feed bar 1 is given an unclamping motion by the clamp unit 11, and at the same time, the lift base 8 is lowered via the rotating shaft 12, etc., and the pusher 7 is sunk below the upper surface of the fixed chute 5, and the blank 4 on which it was placed is lowered. is passed to idle stage II on fixed shoe 1-5.

Subsequently, the feed bar 1 performs a return movement together with the pusher 7 and returns to the return end.

Next, when the feed bar 1 is given a clamping motion by the clamp unit 11, the blank 4 is pushed up from the fixed chute 5 by the raised bushing bar 7 and positioned on the positioning block 6.

The blank 4 is repeatedly conveyed to the idle stage IV, held by the fingers 18 of the feed bar 1, and conveyed to the first mold (2).

As is clear from the above explanation, according to the present invention, the blanks are transferred between the fixed chutes by the vertical movement of the bushing par, and the positioning block is provided on the bushing par, so the positioning accuracy is good and it is suitable for high-speed operation. No decrease in positional accuracy due to inertia occurs.

Also, since the blank does not slide on the fixed chute, there is no need to worry about scratches.

Furthermore, since the pusher can be attached to and removed from the traverse pin, the mounting and adjustment of the positioning block can be done outside the machine, so a set of pushers with positioning blocks suitable for various blanks can be used as a spare. If you own one, you can reduce the amount of time you have to stop the press for preparation.

The practical effects and advantages are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the embodiment installed on the left side of the press;
Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a cross-sectional view taken along line B-- in Figure 1.
It is a sectional view of B. 1 is a feed bar, 2 is a traverse, 3 is a stand, 4 is a blank, 5 is a fixed chute, 6 is a positioning block, 7 is a pusher, 8 is a lift base, 9 is a guide plate, 11 is a clamp unit, 12 is a rotating shaft , 13 is a guide post, 14 is a pinion, 15 is a pin, 16 is a par,
17 is a rack, 18 is a finger, and 19 is a connecting block.

Claims (1)

[Scope of utility model registration request] In a device that transports blanks from a blank receiver to a press mold, a fixed chute fixed to the machine body in the transport direction is provided between the blank receiver and the mold, and a Blank positioning blocks are provided on the upper surface of the bushing bar at intervals equal to the conveyance pitch, and are positioned at the lower part of the fixed chute to receive the bushing bar on its upper surface, and the bushing bar is positioned on its upper surface in the conveying direction. A horizontal lift base is provided with a guide plate fixed to guide the lift base, and a plurality of bars erected on the underside of the lift base are fit into guide posts erected on the floor so as to be able to rise and fall,
Means is provided for raising and lowering the lift base in synchronization with the clamping/unclamping movement of the feed bar so that the upper surface of the bushing bar protrudes and retracts from the upper surface of the fixed chute, and the lift base is oriented at right angles to the rear end of the feed bar. A blank conveying device for a press, characterized in that a traverse is provided that is slidably connected in the clasp/unclamp direction, and the front end of the bushing bar is engaged with a pin provided upright on the traverse so as to be able to move up and down.