SU935173A1 - Apparatus for producing u-shaped parts bending rectilinear blanks by pulling through - Google Patents

Description

(54) DEVICE FOR MANUFACTURING U-SHAPED PARTS WITH FLEXIBLE RIGHT LINEAR PREPARATIONS BY PUSHING

one

The invention relates to the processing of metals by pressure and can be used for the manufacture of a web material by pushing a U-shaped piece through a bending matrix.

Arrangements are known for the manufacture of rolled material parts by the pushing method, comprising a bending matrix having an open contour of the cross section of the working surface 1.

Such devices cannot be used to manufacture parts that are U-shaped, since it is impossible to fix the front end of the workpiece on them.

The closest in technical essence and the achieved effect to the proposed is a device for the manufacture of U-shaped parts of a flexible rectilinear workpieces pushing containing a bendable split in the plane of bending, consisting of a tool with a working opening in the form of a channel corresponding to the profile of the resulting part, and a moving wall of a coupler connected to a drive; a workpiece feed mechanism; and means for removing the finished part 2.

This device cannot be used to manufacture parts from a web of rolled material.

The aim of the invention is to provide the possibility of manufacturing parts from

5 tape roll material.

For this purpose, a device for making U-shaped parts of a flexible rectilinear workpieces by pushing, containing a bending mat that is detachable in the plane of bending, Q is a dice, consisting of a template with a working hole in the form of a channel corresponding to the profile of the resulting part, and a movable wall the connector drive, the workpiece feed mechanism and the means for removing the finished part are provided with a cutting chip installed in front of the bending die in the feed direction of the workpiece to form and separate the front and rear ends adjacent blanks, and the template is mounted with the possibility of returnable gate movement in the direction of supply of the blank and is equipped with a mechanism for this movement.

The means for removing the finished part are made in the form of a spring-loaded ejector, a stripper, mounted in the template.

equipped with a reciprocating drive in a plane parallel to the working end face of the template and fixedly connected with a pusher puller interacting with the ejector.

The movable wall is made rotatable in the plane of the connector, and the mechanism for moving the template is made in the form of a slider bearing a template and a system that levers connecting the slide with a connector drive.

FIG. 1 shows a kinematic diagram of the device; in fig. 2 - the unit is flexible and means of removal of the finished part.

The device for pushing bend includes roll-mounted 1 mounted on the frame (not shown), catching rollers 2, plates for deburring 3, supporting rollers 4, lever device 5 for cleaning the tape. Items 2-5 are the posting assembly. Also, on the frame, there are non-driven correct rollers 6, the upper rollers being mounted on the lever 7 connected to the screw unit 8 for adjusting the belt deflection.

The tape feed mechanism is made in the form of feed rollers 9 driven by electric motor 10 through gear 11, chain transmission 12 and coarse-toothed gear pair 13. The upper feed roller is pressed from pneumatic cylinder 14 by lever 15. A die 16 is installed in the direction of movement of the tape and a punch 17 fixed in the punch holder 18 associated with the rod of the multi-pneumatic cylinder 19 by means of a plate 20 carrying the punch holder. In the hole of the punch holder 18, on the lever 21, a pivoting stop 22 is mounted, the end of which in the working position is always in the same vertical plane with the lifting line.

Further, in the feed direction of the tape, a replaceable plug in the plane of flexible bending matrix consisting of a plate 23 with a working hole in the form of a channel corresponding to the profile of the obtained part and a wall 24 turning in the plane of the connector connected with a pneumatic cylinder 25 is flexible.

The template 23 is mounted for reciprocating movement in the belt feeding direction and is equipped with a mechanism for this movement: a slider 26 supporting the template and a system of levers 27 connecting the slider 26 to the actuator 25 of the connector.

The means for removing the finished part are made in the form of a spring-loaded ejector 28 installed in the template 23, a puller 29 equipped with a reciprocating movement actuator 30 in a plane parallel to the working face of the die, and a pusher 31 made in one piece with the puller 29 and interacting

with a pusher 28. The position 32 denotes a finished part.

The device works as follows.

The tape from the roll holder 1 through the wiring assembly 2-5, the correct rollers 6 and the feed rollers 9 (the upper roller 9 lifts) is fed so that its end passes over the center of the cutting pin 3-5 mm. The pneumatic cylinder 19 of the punch 17 is turned on and the front end of the workpiece is cut and a cut is made on it. Then, using a switch (not shown), set the mode of operation, turn on the Cycle button, the upper roller 9 is lowered, the electric drive feed motor is turned on and the tape is fed into the bending matrix up to the stop 22. When the tape is pressed, the stop 22 is commanded to lift the upper feed roller 9 and on the pneumatic cylinder 19 of the punch 17 separating the bent part 22 cutting through the notches at its end and at the beginning of the fed tape. After the part 32 is separated, the slider 26 under the influence of the pneumatic cylinder 25 moves the pattern 23 to the position of ejection of the part. At the same time, the pivoting wall 24 is raised. The drive 30 triggers. The puller 29 acts on the branches of the bent part 32, and the pusher 31 - on the ejector 28, and the finished part 32 is removed from the working area of the bending die.

The technical and economic effect of the proposed device is determined by the possibility of making clamps of various sizes from tape web material and fully automating this process.

Claims (3)

1. A device for making U-shaped parts of a flexible rectilinear workpieces by pushing, containing a bendable split in the plane of bending, consisting of a plate with a working opening in the form of a channel corresponding to the profile of the resulting part, and a movable wall connected to the connector drive, a mechanism supplying the workpiece and means for removing the finished part, characterized in that, in order to enable the manufacture of parts from a web of rolled material, the device is provided with a front mounted bending die in the feed direction of the workpiece, a cutting chip for shaping and separating the front and rear ends of the adjacent workpieces, and the template is mounted with the possibility of reciprocating movement in the feed direction of the workpiece and is equipped with a mechanism for this movement. 2. Device according to claim 1, characterized in that the means for removing the finished part made in the form of a spring-loaded ejector mounted in a template, a puller provided with a drive of reciprocating movement in a plane parallel to the working end of the template, and fixedly connected with a puller of a pusher interacting with the ejector. 3. The device according to claim 1, characterized in that the movable wall is rotatable in the plane of the connector, and the mechanism The template movement is made in the form of a template-carrying slider and a system of levers connecting the slider with a connector drive. Sources of information taken into account in the examination 1. US patent number 2871910, cl. 72-129, 1970. 2. USSR author's certificate No. 519249, cl. B 21 D 9/12, 26.04.74 (prototype).