JPH02268931A - Automatic ejecting device for feed bar - Google Patents

Abstract

PURPOSE:To automatically eject a feed bar smoothly and without interference and failure of equipment by acting a connecting means, separating the ejecting part from a fixing part, lowering it to the bottom limit with a forced lowering means and supporting with a receiving member. CONSTITUTION:The connecting means 60 is acted and the ejecting part 15 of the feed bar 10 is separated from the bonding part 11 and the feed bar 10 is lowered from the down position DP to the bottom limit DPL with the forced lowering means. The ejecting part 15 is transferred to the receiving member 7 and the fixing part 11 is still lowered with a feed bar guide 21 and reaches the bottom limit DPL. The ejecting part 15 is placed on the receiving member 7 and can be smoothly drawn out with a die lifter 4 at the front of press and, as it do so, the interference with the feed bar guide is not generated. Labor saving and automatization can be achieved and the work can be performed safely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic feed bar take-out device. Used in presses equipped with transfer feed equipment.

[Prior Art] Transfer feed devices for automatically conveying products have been introduced to save labor and improve productivity of presses.

Four general transfer feed devices include a clamp/unclamp mechanism that moves a pair of feed bars toward and away from each other in the front and back directions of the press in order to clamp and unclamp products, and an advance return mechanism that moves the feed bars in the left and right direction of the press. and a lift/down mechanism that moves the feed bar in the vertical direction. Therefore, the feed bar is restrained and supported so as not to be relatively movable in the front and back directions of the press by the feed bar guide that moves up and down. Specifically, the feed bar guide has a concave shape, and is restrained by the upright portions on both sides thereof.

On the other hand, in order to take out the feed bar when replacing the mold, in the case of a moving bolster, a receiving member is provided on the moving bolster itself, and in the case of a fixed type bolster, a receiving member is provided on the die softer that is attached to the bolster so that it can move up and down. . The height of this receiving member is such that it comes very close to the feed bar without contacting it when the feed bar is in the down position.

Therefore, when exchanging money, etc., remove the feed bar from the feed bar guide by raising the moving bolster or the receiving member, and place it on the receiving member, and then use appropriate means such as a moving bolster or a forklift. It was taken out of the press.

[Problem to be solved by the invention] By the way, a press equipped with a transfer feed device has a high packaging density and requires almost no excess space, and the lift stroke of a moving bolster or die lifter is generally not used due to its high weight and lifting purpose. It is 2 to 3 mm.

Therefore, to remove and install the feed bar,
It is necessary to lift the feed bar from the feed bar kite and place the lower support on a member, which is not only time-consuming and time-consuming but also dangerous. This is troublesome because it has to be taken out without interfering with the guide etc.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic feed bar take-out device that can quickly and easily take out a feed bar without interference from fingers or the like.

[Means for Solving the Problems] The present invention provides forced lowering means for forcibly lowering the feed bar to the lowest limit below the down position by engaging with the lift/down mechanism of the feed bar, and a feed bar guide of the feed bar. a connecting means for connecting and separating a fixed part supported by the feed bar and a take-out part which can be taken out to the outside; and a connecting means for operating the connecting means to separate the take-out part of the feed bar from the fixed part, and operating a forced lowering means after the separation. and a receiving member formed to be able to support the take-out portion of the feed bar that is forcibly lowered between the down position and the lower limit. There is.

[Function] In the present invention having the above configuration, the take-out control means operates the connecting means to separate the fixed part and the take-out part of the feed bar on the feed bar guide forming a part of the lift-down mechanism. Thereafter, the forced lowering means is operated to lower the feed bar guide to the lowest limit below the down position of the lift-down operation. Therefore, the feed bar descends together with the feed bar guide and is placed on the receiving member on the way. Thereby, the take-out portion of the feed bar is automatically transferred from the feed bar guide to the receiving member.

Therefore, the entire receiving member or only the feed bar can be quickly and easily taken out of the press by an appropriate means such as a moving bolster, die lifter, or forklit.

〔Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

This automatic take-out device is installed in a press equipped with a three-dimensional transfer feed device (clamp/unclamp i horizontal 20.lift/down tll##30°advanced return mechanism) as shown in Figures 1 to 5. It is broadly divided into a receiving member 7, a forced lowering means 50, a connecting means 60, and an extraction control means 70. In addition, in this embodiment, the take-out control means 70 is formed from a control means having an automatic attaching control function to operate in the opposite direction, in addition to the automatic take-out side tXJ81 function, to form an automatic feed bar attachment/detachment device. There is.

First, as shown in FIGS. 1 to 3, the clamp/unclamp i-ellipse 20 consists of a feed bar kite 21 and a clamp unit 22 that performs clamp/unclamp operations (moves in the left and right directions in FIG. 1). . The feed bar guide 21 has a concave cross section in order to restrain the feed bar 10 and allow it to move back and forth in the left and right direction, and to allow the feed bar 10 to be attached and detached.

Further, the clamp unit 22 is connected to the feed bar kite 2.
1, a movable body 24 that supports the rod 23 so as to be movable in the vertical direction but not horizontally in FIG. 1, and a rack member 26 that can pass through the through hole 25 of the movable body 24. and a pinion 27 that meshes with the rack member 26, and the rack members 26 and the like are provided as a pair of left and right.

Therefore, if the pinion shaft 29 (see Fig. 2) is rotated via a cam, lever, rod, etc. (not shown), the pinion 27 will rotate, and both rotating bodies 24° 24, that is, the feed bar guides 21, 21 ( The feed bar 10.10) performs a clamp/unclamp (separation/approach) operation.

Further, the lift-down mechanism 30, as shown in FIG.
Rack 33.3 formed in part of both rods 23, 23
3 and the pinion 32.3 that meshes with this rack 33.33.
2, a sedge line shaft 31 which connects these and the nion 3233 so that they can move in the direction of clamp/unclamp operation and can rotate synchronously, and a rack 3 that partially meshes with the pinion 34.
5 and a drive mechanism (cam 41, spindle 4
3, a swingable lever 42, and a cam follower 44). Therefore, drive 8! Rod 36 by the side
By raising and lowering the feed bar guides 21 and 21 (feed bars 10 and 10), the feed bar guides 21 and 21 (feed bars 10 and 10) can be lifted and lowered regardless of the presence or absence of clamp/unclamp operations.

A cylinder device (cylinder 46, pinion 47) is provided at the lower end of the rod 36 for buffering and maintaining engagement between the cam follower 44 and the cam 41, and is biased by air pressure from four air supply devices. .

Here, the feed bar 10 (10) is supported by the feed bar guides 21 and 21 as shown in FIGS. 1 to 3, and the details thereof are as shown in FIG. 4 (FIG. 1). 6. The fixing part 11 and the take-out part 15, which are formed by the fixing part 11 fixed to the feed bar guide 21 and the take-out part 15 having a large number of fingers for clamping the product, are engaged with each other in a corresponding uneven shape. They are connected together in the axial direction in FIG. 4 by portions 12.16 and can be separated in the vertical direction. Note that the fixed portion 11 is only on the right side of the feed bar 10. This connection/separation is automatically performed by the connection means 60.

As shown in FIG. 4, this connecting means 60 includes a cylinder device 61 formed including a locking portion 63 and a piston rod 62 that can be fitted across the through hole 13 of the fixing portion 11 and the through hole 17 of the extraction portion 15. It consists of The state shown in FIG. 4 is a connected state, and if the cylinder device 61 is operated so that the locking part 63 comes out of the through hole 17 of the extraction part 15, the separated state can be achieved. This can be confirmed by the limit switch 76 shown in FIG.

Next, as shown in FIG. 3, the forced lowering means 50 engages with the lift-down mechanism 30 of the feed bar 10 to move the feed bar 10 to the lowest limit DPL below the down position DP.
It is a means of forcing the body to descend. That is, the distance between the lift position UP and the down position DP in which the lift-down operation is performed is removed, and the feedbar kite 21.degree. 21 is lowered by the stroke .DELTA. shown in FIG. In this embodiment, as shown in FIG. (Cylinder 46, piston 4
7), and five oil supply devices for supplying sufficient hydraulic pressure to the push-up blade to pull the rod 36 downward.

Note that 75 is a limit switch that detects the lower limit of the rod 36 (piston 47).

The receiving members 7, 7, as shown in FIG.
It is supported by a tie lifter 4 that can be raised and lowered by 2 to 3 mm (fixed type). The position of the upper surface of this receiving member 7 is the same as that of the feed bar 10 (takeout portion 15) at the down position DP in FIG.
), and is placed 2 to 3 mm away from the bottom surface of the device so that it comes very close to the bottom surface of the device without contact. Therefore, feed bar 1
There is no problem with the lift/town operation of 0, and the forced descent means 5
0, it is possible to prevent the take-out portion 15 from being transferred from the feed bar guide 21 to the receiving member 7.7 while the feed bar 10 is lowered from the down position DP to the lowest limit DPL.

Next, as shown in FIGS. 5 and 6, the take-out control means 70 operates the connecting means 60 (cylinder device 61) to separate the take-out part 15 of the feed bar 10 from the fixed part 11 and forcefully lower it after separation. Operate the means 50 to feed the feed bar 1
0 to the lowest limit DPL. In this embodiment, as shown in FIG. 6, it is formed as a fully automatic type, but it is a two-step step in which the connecting means 60 is operated by a switch operation, and the forced lowering means 50 is operated by another switch operation on the condition that the separation is confirmed. It may also be a method.

In this embodiment, FIG. 6 shows a flowchart for only the automatic removal function, but since the automatic installation function has a reverse operation relationship, the flowchart is displayed and the limit switch 75 and the corresponding forced lowering means 50 are operated in the opposite manner. Limit switch and limit switch 76 for release confirmation
The illustration of a limit switch for confirming the connection of the connecting means 60 corresponding to the connecting means 60 is omitted. Of course, this extraction control means 70
may be realized using the components and functions of the entire press control device.

Next, the effect will be explained.

Clamp Anfranz' machine [20, lift down f
ffim30. Advance return mechanism (not shown)
operates the take-out control means 70 under the initial state.

Then, the extraction control means 70 performs step 100 in FIG.
Then, the connecting means 60 shown in FIG. 4 is operated to separate the take-out portion 15 of the feed bar 10 from the fixed portion 11. When the completion of separation is confirmed in step 102 by the operation of the limit switch 76, the extraction control means 70 continues in step 10.
4, the forced lowering means 50 is operated. That is, hydraulic pressure is supplied into the cylinder 51 from the oil supply device 59 shown in FIG. 1, and the rod 36 is forcibly pulled down by overcoming the push-up blade of the cylinder 46 forming the lift-down mechanism 30. Therefore, the feed bar guide 21 (feed bar 10) is connected to the rack 35. Pinion 34. Spline shaft 31. Pinion 32. With the cooperation of the rack 33, it is lowered from the down position DP in FIG. 1 toward the lowest limit DPL. Then, during the descent, more specifically, when descending several mm, the take-out portion 15 of the feed bar 10 is transferred to the receiving members 7, 7. The fixed portion 11 further descends together with the feed bar guide 21.

When the lowest limit DPL is confirmed by the limit switch 75,
The forced lowering means 50 is stopped (step 106), and an eject*(iii completion signal is output to the die lifter 4 (step 108)).The forced lowering means 50 is an automatic mounting operation whose detailed operation explanation will be omitted. be released prior to.

Therefore, the take-out portion 15 of the feed bar 10 is connected to the receiving member 7,
With the die lifter 4 operated based on the take-out preparation completion signal, the press is smoothly pulled out to the front side of the press (bottom 1 in FIG. 2) without interfering with the feed bar guide 21 while being placed on the feed bar guide 21.

According to this embodiment, the connecting means 60, the forced lowering means 50, the take-out control means 70, and the receiving member 7 are provided, and after the feed bar 10 is separated, the feed bar kite 21 is moved to the lowest limit D.
Since it is configured to be lowered to the PL and transferred to the receiving member 7 on the way, the feed bar 10 (15) can be automatically taken out quickly and smoothly without interference between the feed bar 10 and the feed bar guide 21 or damage to the equipment. .

In addition, since the take-out control means 70 is composed of a control means that includes not only a take-out control function but also a mounting control function, automatic attachment and detachment of the feed bar IO is achieved, dramatically increasing press productivity with labor-saving and safe work. can be increased.

Further, since the connecting means 60 can connect and separate the fixed part 11 and the take-out part 15 of the feed bar 10 on the feed bar guide 21 by only operating the cylinder device 61, there is no need for the operator to enter the press. Work safety is guaranteed.

Further, the forced lowering means 50 includes the lift down mechanism 30
It consists of a hydraulic cylinder 51 attached to a buffer cylinder device (46, 47) and five oil supply devices, so
The cost is low and the characteristics of the lift/down mechanism 30 are not affected in the slightest.

[Effects of the Invention] As is clear from the above description, the present invention includes a connecting means, a forced lowering means, a take-out control means, and a receiving member, and after separating the feed bar, lowers the feed bar guide to the lowest limit, and also lowers the feed bar guide in the middle thereof. Since it is configured to be transferred to the receiving member,
The feed bar can be automatically taken out quickly and smoothly without interference between the feed bar and the feed bar guide or damage to the equipment. As a result, labor saving and automation can be achieved, and productivity can be dramatically improved with guaranteed work safety.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall configuration diagram, Fig. 2 is a plan view for explaining the relationship between the feed bar and the clamp unit, and Fig. 3 is a feed bar and a receiver. Fig. 4 is a side view of the connecting means, Fig. 5 is a block diagram of the extraction control means, and Fig. 6 is a flowchart for explaining the operation. be. 4... Die lifter, 7... Receiving member, 10... Feed bar 11... Fixed part, 15... Removal part, 20... Clamp/unclamp v1 structure, 21...
Feed bar guide, 30... Lift/down vA structure, 50... Forced lowering means, 60... Connection means, 70... Takeout control means.

Claims (1)

[Claims] (1) Forcible lowering means that interacts with the feed bar's lift/down mechanism to forcibly lower the feed bar to the lowest limit below the down position, and a fixed part supported by the feed bar guide of the feed bar and a fixed part supported by the feed bar guide and taken out to the outside. a connecting means for connecting and separating the take-out portion of the feed bar from the fixed portion; operating the connecting means to separate the take-out portion of the feed bar from the fixed portion; and after separation, operating a forced lowering means to forcibly lower the feed bar to the lowest limit; An automatic feed bar take-out device comprising: a take-out control means for controlling the feed bar; and a receiving member configured to be able to support a feed bar take-out portion that is forcibly lowered between the down position and the lowest limit.