SU969474A1 - Machine for cutting measured blanks - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for cutting piece workpieces in automatic lines. A device for cutting dimensional workpieces is known, which contains a feed mechanism, a cutting assembly made in the form of movable and stationary knives, a stop of measuring length, a cut-off work piece removal unit made in the form of an ejector, with its reciprocating movement in the direction perpendicular to the feed direction. and the direction of movement of the movable knife and the ejector bearing C 1 3. A disadvantage of the known device is its low productivity caused by the fact that it is not automatically removed. unmeasured residues. The purpose of the invention is to increase productivity by automating the removal of non-measuring residues. The goal is achieved by the fact that, in a device for cutting pieces, containing a feed mechanism, a cutting unit made in the form of a movable and fixed knife, an emphasis of measured length, a unit for removing billets made in the form of an ejector with a drive of reciprocating movement in the direction perpendicular to the feed direction and the direction of movement of the movable knife, and the ejector support, the latter is made in the form of two guides, one of which is mounted for movement in the direction lenii supply and associated focusing cut length, and is made of the ejector plates mounted in napravl5poshih, with simultaneous movement along them. FIG. 1 schematically shows a device, a longitudinal section; on ijfflT. 2 the same, top view; in fig. 3 shows section A-A in FIG. one; in fig. 4 shows a section BB in FIG. 2; in fig. 5 - section bb in fig. 3; Fig. 6 shows an embodiment of guide and ejector with angular speed c; Fig. 7 is a top view of the drive mechanism; Fig. 8 is a side view of the drive mechanism. . The device contains a feed mechanism 2 mounted on a bed 1, a cutting unit made in the form of a movable knife 3 ,. the fixed knife 4 and 5 5, the stop 6 with a broom and the knot for removing the cut blanks. The cut-off billet removal unit consists of a pusher made in the form of two plates 7 and 8, a pusher support made in the form of guides 9 and 10, a drive shaft 11 with gears 12 and 13 and an adjusting screw 14. The guide 9 on frame 1 is fixed rigidly, and the guide 10 is mounted for movement in the feed direction by means of an adjusting screw 1.4 and fixed relative to the frame 1 by a locking screw. The tooth, 16 of the guide 10, is placed in the groove 17 of the frame 1, thereby providing movement 10 parallel to the guide 9. The stop 6 is mounted on the landing shaft 1O with the ability to move in the feed direction by means of an adjusting screw 18. and locking relative to the guide 10 by a nut 19, this expands the adjustment possibilities, allowing you to remove the guide 9 and 10 unmeasured residues of different lengths L due to a change in the distance for a given length of the measuring billet. The plate 7 is installed on the guide 9 and the plate 8 is fixed on the guide 1 O with the possibility of reciprocating translational movement along the tracks 9 and 10. The plates 7 and 8 with guides 9 and 10 are engaged with the help of crackers 20, which are located in the slots 21 of plates 7 and 8 and fixed on the guides 9 and 10 with the help of bolts 22. The drive shaft 11 is mounted on the guides 9 and 1O with the help of a scraper 12 and 13, which are fixed to the sub-bearings 23 in these guides 9 and the Yu Shestern 13 on the shaft 11 fixed with the possibility of moving along this shaft 11 along the tab 24. The gears 12 and 13 on the way The hardware in engagement with the laths 25, which are rigidly connected to the plates 7 and 8, respectively. The adjusting screw 14 is fixed in the rack 26 of the frame 1 with rotational movement, which allows the guide 10 to move relative to the frame 1. The adjusting screw 14 has a shank 27 for rotating and its 1-tool, the height of the plates 7 and 8 is chosen equal to or greater than the height (diameter) of the rolled steel. To ensure a smooth supply of the end residue exceeding in length, the distance between the plates 7 and 8 on the plate 8 is made a slope 28. Thus, the plates 7 and 8 serve to guide and support the rolled steel, as well as to feed the measured blanks to the mold equipment on the tray. 29, which is fixed on the frame 1 and the vertical walls of which orient the cut bosses along a vertical plane, in order to increase the reliability of the process of removing the unmeasured residue, guides 9 and 10 of plates 7 and 8 of the upper; Filled with the slope of the SR, having a corner to the horizontal plane. Removal of unmeasured residue is carried out through the window 31 in the frame 1 under the action of gravity. A variant of the drive mechanism is possible, when on each of the guides 9 and 10 a force cylinder 32 is installed, which is connected to the axle 34 by means of a shaft 35 through axis 34, respectively, with plates 7 and 8. the axis 34 when moving the guide 10, the groove 35 of the guide 10 enables the reciprocating movement of the drive mechanism. The device operates as follows. Rental 36 is pre-installed in the feed mechanism 2 and this mechanism 2 is fed through rails and along the upper surface 7 and 8 to the stop 6. After that, the plates 7 and 8 are removed from under the hire 36, and the clamp 5 at the working stroke of the cutting unit presses the rolling 36 to the stationary vehicle 4. With the further progress of the cutting assembly, the movable knife 3 interacts with the rolling 3 6 and the fixed knife 4, cuts the dimensional workpiece 37 from the rolled 36 and lowers it onto the guides 9 and 10,

When the cutting unit is idling, the movable knife 3 and the clamp 5 are returned to the initial position, freeing the rolling 36 from the fixing forces,

After that, plates 7 and 8, driven by gears 12 and 13 from the drive shaft 11 through rails 25, remove the dimensional workpiece 37 from the working area of the device, moving it along the guides 9 and 10 to the forming backing; ore

Then the cycle of operation is repeated.

When feeding into the space between the cutting plane and the stop 6 of the end residue of the previous rolled 36 with a length less than the distance between plates 7 and 8, this end residue falls into the space between the plates 7 and 8, guides 9 and 1O to the window 31. As a result, the next bar 36 is fed up to the stop 6. With the same length of the car being cut, 36 min. work and remove the end of the residue repeat.,

When serving in the space between the cutting plane and the stop 6 of the terminal ocTaTija, which is longer than the distance; between plates 7 and 8, this terminal residue along the slope 28 of plate 8 is fed up to the stop 6. After mounting. plates 7 and 8 from under rolling 36 and at the working stroke of the cutting unit — the terminal residue begins to fall in the initial stage of the cutting unit's cutting stroke, and the metallurgical end is lowered by the movable knife 3 onto the guide 9 after the sections from rolling 36 at the end of the working stroke. These non-dimensional residues, not having a second support and being asymmetrically relative to a single support, are tilted into the space between the guides 9 and 10 and further into the window 31.

The cylindrical or beveled at an angle oL profile guides 9 and 10., Increases the reliability of removing unmeasured residues from the guides, so icaK provides rotation, tilting of the guides of the non-metallic residue of any minimum length ..

The changeover to another length, the measuring billet 37 is carried out by turning the adjusting screw 14 by the shank 27. At the same time, the guide Yu moves together with the plate 8 and the gear 13, which ensures the work of the ejector on the new length of the measuring billet 37.

Simultaneous readjustment by rotating the adjustment screws 14 and 18 provides the ability to adjust the ejector to remove unmeasured residues of different lengths L by changing the distance E for a given length of the dimensional workpiece 37..

The proposed device for cutting dimensional blanks has high performance due to automation. removal of unmeasured residues. ,

Claims (1)

1. USSR author's certificate number 657932, cl. In 23TE 33 / O2, 1977 (prototype). yy fO FIG. five four). r ff FIG. 6