JPH05104471A - Transfer device for continuous workpiece forming machine - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To enable the movement of the grip claw to be optimally adapted to the individual purpose of use. A transfer support body (2), a plurality of long gripping claws (9 to 14) each forming one gripping part, and swinging in a transfer plane while supporting the gripping claws and moving in the transfer direction. The first supporting members 16 to 21 which are moved substantially in the lateral direction, the springs that act in the direction of closing the grips of the first supporting members of the gripping claws, and the first supporting members against the action of the springs. Control member acting on the support member of the second holding member, second support members 22 to 27 that respectively support the gripping claws, and a swinging motion of the gripping claws within a predetermined range according to the movement of the gripping claws in the lateral direction with respect to the transfer direction. The curved traveling path 34a, 3 having a guide means controlled by the guide means having the traveling path trail members 28 to 33.
4b; 35a, 35b; 36a, 36b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer support capable of reciprocating between a storage position and a discharge position, and a plurality of transfer supports which are supported by the transfer support as a set and each set forms one gripping portion. The long gripping claw and the end of the gripping claw opposite to the free end of the gripping claw can be rocked in the transfer plane while supporting the gripping claw, and can be moved substantially laterally to the transfer direction. A first support member, a spring that acts on the first support member of the grip claw in a direction to close the grip portion, respectively, and a control member that acts on the first support member against the action of the spring. Second support members that respectively support the grip claws are provided between the second support member and the grip claws, and the swing motion of the grip claws is determined according to the movement of the grip claws in the lateral direction with respect to the transfer direction. Workpiece composition with guide means for controlling within a predetermined range Transfer device in the machine, to a lateral transfer device, in particular provided in multiple stages press. A transfer device of this kind is described in DE-A 35 23 323.

[0002]

2. Description of the Related Art The structure of the transfer device described in the above-mentioned publication is superior to the structure before that, because the gripping claw swinging operation is superimposed on the linear driving operation of the gripping claw. The path of movement of the free end of the pawl can be such that the pawl can be quickly and widely opened as desired by a suitable tool of the molding machine and can be moved far enough away as desired.

On the other hand, a drawback of the structure shown in German Laid-Open Patent Publication No. 3523323 is that the swinging motion of the gripping pawl is caused by the control stick structure provided therein in advance according to the movement of the gripping pawl performed perpendicularly to the transfer direction. It is decided. The construction of gripping pawls and the rules of indivisible movement are never such that one or more pawls can be optimally moved as desired for any purpose of use in molding machines or multi-stage presses.

[0004]

SUMMARY OF THE INVENTION The basic problem of the present invention is that in a transfer device of the type mentioned at the outset, the law of movement of the gripping pawl is optimally adapted to the individual intended use. Is to be able to.
The above problem is solved by a device according to the characterizing part of claim 1, i.e. a transfer device in a work forming machine, characterized in that the guide means are formed as a curved roadway with a roadway trail member. ..

Another disadvantage of the method described in DE-A 35 32 323 is that a long gripping grip is supported which is swingable at only one end and which is displaceable approximately transversely to the transport direction. Since the pawl is not provided with any other guide member, there is a possibility that the grasping pawl will move to some extent uncontrolled or uncontrollable, or that it will be displaced laterally with respect to the rocking plane. The problems involved in picking up and ejecting workpieces from it (in addition to the improper movement law of the gripper jaws for each workpiece and the type of tool used for forming) are to significantly reduce the capacity of the forming machine or the multi-stage press. is there. Therefore, the gripper pawls are guided more reliably in the rocking plane, so that, even when the working process of the forming machine or the multi-stage press is rather sophisticated, the work pieces can be more reliably and accurately accommodated in or ejected from the tool in question. I have to be able to do that. This problem is solved by the device according to claim 10. Claims 2 to 9 and claims 11 and 12 describe further preferred embodiments of the transfer device according to the invention.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2 of the accompanying drawings. Reference numeral 1 in the drawings
The transfer device indicated by is formed of a transfer support 2 having gripping devices 6, 7, 8. The gripping devices 6, 7, 8 have gripping claws 9, 10, 11 and 12, 13 and 1, respectively.
4 are provided in pairs. The gripping devices 6, 7, 8 fixed to the transfer support 2 are, as is known (and as described in DE 35 23 323),
Since it is moved in both directions as shown by the arrow 52 in FIG. 1,
The insert pieces 53 to 58 fixed to the gripping claws 9 to 14 are moved bidirectionally between the storage and discharge positions 3, 4, 5 and 59 as is known. This bidirectional movement takes place in a virtual transport plane designated by reference numeral 15 (see FIG. 2).

The gripping pawls 9 to 14 have corresponding bearing holes (for example, the bearing hole 40 for the gripping pawl 10 as shown in FIG. 2).
Via swivel axes 16, 17, and 18, 19, respectively.
And 20, 21 pivotably mounted on them, these pivots forming a first support member for supporting the gripping pawls.
The swivel shafts 16 to 21 are provided on the protruding portion of the slide base that receives the action of the pressing spring, for example, on the protruding portion 41 of the slide base 42 having the compression spring 43 (see FIG. 2).

Further, the gripping claws 9 to 14 have pins 22 to 27.
Is provided. Rollers 28 to 33 are attached to the pins 22 to 27, respectively. The rollers 28-33 are respectively provided with grooved links 34a, 34b, 35a, 35.
The grooved links run on b, 36a, and 36b, and serve as second support members for supporting the grip claws 9 to 14, respectively. Each set of grip claws 9, 10, and 11, 12, and 13, 14
Compression springs 37, 38, 39 are respectively provided between the rollers 28, so that the rollers 28 of each gripping pawl pair are provided.
~ 33 always with sufficient pressure for each grooved link 34
It is in contact with a to 36b. In order to make the working process of the molding machine or the multi-stage press as high as possible, it goes without saying that the grooved links 34a to 36b are provided with guide surfaces extending parallel to the traveling of the traveling rollers 28 to 33 on the rollers 28 to 33. On the other hand, it is preferable to provide them with a predetermined small distance. The guide surfaces of this type are represented by reference numerals 64a, 64b, 65a, 65b, 66a, 66 in the drawing.
It is indicated by b.

The slide base of the grip claw is guided between the upper and lower guide bushes, for example, between the guide bushes 60 and 61 for guiding the slide base 42 so as to be movable in the direction of arrow 62. In order to control each slide in the direction of the arrow 62, a lever of two arms is provided as a control member of the slide, and the lever is rocked on the transfer support by a known method as shown in FIG. It is movably mounted and is likewise controlled in a known manner by a guide 50 which is cycled through the machine via rollers in a manner similar to the prior art. For example, a lever 44 is provided as a control member for controlling the slide base 42, and the free end of one arm 45 of the lever 44 is fitted into the notch 46 of the slide base 42, and the compression spring 4 is there.
It contacts the pressing surface 47 against the action of 3. A roller 49 is provided at the free end of the other arm of the lever 44 indicated by the reference numeral 48, via which the lever 44 is controlled by the guide 50 in the direction of the arrow 63 substantially in the machine cycle. The guide 50 is provided at the free end of a lever 51, not shown in detail, which is pivotably mounted and driven in the machine frame. With this known structure, the control movement of the lever 51 in the direction of arrow 63 can be superimposed on the movement of the transfer support 2 having the gripping devices 6 to 8 in the direction of arrow 52.

As is apparent from the figure, when controlling the slide base of the gripping claws appropriately, the gripping claws are provided with the rollers 28 to 3 attached thereto.
3 with grooved links 34a, 34b, 35 respectively
Move along a, 35b, 36a, 36b. At this time, instead of guiding the grooved link along the curve as shown in the figure, it may be better to guide the grooved link along an arcuate or semi-circular orbit depending on the purpose of use. Besides, the grooved link does not necessarily have to be formed as a mirror image as shown in the drawing, and the grooved link for the roller of one gripping claw of the pair of gripping claws is not necessarily formed as a roller of the other gripping claw of the same gripping claw. It can also be formed to extend from a grooved link for use.

Furthermore, instead of the grooved link as in the illustrated embodiment, it is also possible to provide a sliding block part in which the rollers of the gripping claws run along the outside. Further, instead of the grooved link or the roller for trailing (tracing) a curve, a pin-shaped running path trail member can be used. In that case, a curved travel path can be formed in the gripping pawl, and a pin-shaped travel path trail member can be supported on the transfer support.

In addition to the inside of the gripping claw, it is possible to provide a curved traveling path on the side of the gripping claw. On the contrary, it is also possible to provide a curved traveling path on the transfer support body and provide the traveling claw trail member on the grip claw. There is another principle method in which curved roads are formed in a mirror image shape so as to be equal or not so as to give not only a circular arc shape or a semi-circular arc shape which is considered as a special case but also a shape which is deviated to some extent. As a result, in order to make the invention as versatile as possible, the curve path (the shape of which) is preferably designed as an always replaceable insert piece.

In order to operate the machine in question in a trouble-free manner, it is further preferred that the gripper pawls on at least two sides of the transfer pawl are in the fork-shaped end of the transfer support (in the embodiment shown). In the guide plate 63
And 64), respectively, in a plane parallel to the transport plane 15. In addition to the method of using only one compression spring shown in the embodiment, that is, the compression springs 37, 38, or 39, separate compression springs are provided for each of the two gripping pawls of the pair, and one end portion thereof is provided. Is supported by a gripping claw as in the illustrated embodiment, and the other end is guided by a guide plate 63,
It is also possible to support by a stopper supported by 64, so that the grip claw can move in the direction of arrow 62.

[Brief description of drawings]

FIG. 1 is a front view of a transfer device according to the present invention.

2 is a cross-sectional view of the transfer device shown in FIG. 1 taken along line II-II in FIG.

[Explanation of symbols]

9-14 ... Grasping claws 16-21 ... 1st support member 22-27 ... 2nd support member 28-33 ... Traveling road trail member 34a, 34b, 35a, 35b, 36a, 36b ... Curved traveling road 63, 64 ... Transport support member

Claims (12)

[Claims] 1. A) a transfer support capable of reciprocating between a storage position and a discharge position; and b) a plurality of elongated members supported by the transfer support as a set, each set forming one gripping portion. Gripping claws of C., C) being respectively provided at the ends opposite to the free ends of the gripping claws, swinging in the transfer plane while supporting the gripping claws, and moving substantially transversely to the transfer direction. D) a spring that acts in a direction that closes the grip in the first support member of the grip claw, e) a first support member that resists the action of the spring. F) a second support member that respectively supports the grip claw, g) a second support member that supports the grip claw, and g) a swing motion of the grip claw, which is provided between the second support member and the grip claw. Control in a predetermined range according to the movement of the gripping claw in the lateral direction with respect to In a transfer device for a continuous workpiece forming machine, the guide means comprises: h) the guide means is a traveling road trail member (28, 2).
9; 30,31; 32,33) with curved running paths (34a, 34b; 35a, 35b; 36a, 36b)
And a transfer device. 2. The curved travel path is provided on the grip claw,
2. A device as claimed in claim 1, characterized in that pin-shaped track trail members, each of which is journalled on the transfer support, are connected to the curve track. 3. The curved travel path is provided on the grip claw,
2. A device according to claim 1, wherein a track trail member, each of which is borne by the transfer support, is connected to the curved track. 4. The curved road (34a, 34b; 3)
5a, 35b; 36a, 36b) to the transfer support (63,
64. The device as claimed in claim 1, characterized in that roadway trail members (28-33), which are provided in 64) and are respectively supported by the gripping pawls (9-14), are connected to the curved roadway. 5. The curved road (34a, 34b; 3)
5a, 35b; 36a, 36b) have mirror-image equal trajectories. 6. A device according to claim 2, wherein the curved roadways have unequal trajectories. 7. The device according to claim 2, wherein the curved roadway comprises an arcuate trajectory. 8. Device according to claim 7, characterized in that the curved track is provided in the transfer support (63, 64) as a cylindrical jacket-shaped track. 9. The device according to claim 2, wherein the curved roadway is formed as a replaceable insert piece. 10. Transfer within the fork-shaped end of the transfer support (63, 64) on both sides of the gripping pawls (9-14) at least up to the area of the second support member (22-27). Device according to claim 1, characterized in that it is guided in planes parallel to the plane (15). 11. The gripping pawls (9-14) are springs (3) in areas remote from the first support member (16-21).
7. 38, 39), and the traveling road trail members (28-33) are supported in contact with a curved traveling road, respectively. The described device. 12. In a region away from the first support member, one end of the grip claw is supported by a spring and the other end is supported by the transfer support body, and the traveling path trail members are independent of each other. The device according to claim 1, wherein the device is supported in contact with a curved road.