SU1454554A1 - Die for making loops - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to equipment for sheet metal forming. The purpose of the invention is to increase productivity and reliability. The stamp comprises a punch 3, a die, a magazine for workpieces 7, a sliding mechanism and a turning device (K) 13. To 13, an AA is installed between the die and the sliding mechanism. 13 is made in the form of an emphasis having a groove with a curvilinear working surface, forming which is made in the form of an elliptic curve, with the concave part facing the store 7 with the workpieces 8. In K 13 a longitudinal channel is made, the axis of symmetry of which is combined with the axis of the matrix and the gate mechanism. The workpiece 8 from the magazine 7 is fed into the groove K 13. By interacting with the curved surface K 13, the workpiece 8 is rotated to assume a vertical position. Under the force of gravity, the blank 8 falls into the channel and is fed into the die with a spindle mechanism. 4 il. i (L

Description

The invention relates to the processing of metals by pressure, in particular to equipment for sheet stamping.

The purpose of the invention is to increase productivity and reliability.

Figure 1 shows a stamp, General view. (top plate not shown); figure 2 is a section aa in figure 1; in Fig.3 - the position of the stamp at the end of the working stroke of the power cylinder store; figure 4 is a section bB in figure 1, (with the lower position of the punch).

The stamp contains a lower fixed plate 1, an upper plate 2, bearing a punch 3. On the lower plate there is a matrix 4, which are 5 and 6, an inclined magazine 7 with blanks 8, a pneumatic cylinder 9 with a pusher 10 and a pneumatic cylinder 11 with a gate 12 moving along the guides 5 and 6. Between the matrix and the gate, a tilter 13 is mounted coaxially with them, made in the form of a stop having a groove with a curved working surface, the generatrix of which is made in the form of an elliptic curve facing the concave part to the store with blanks. A longitudinal channel is also made in the cathoder, the axis of symmetry of which is aligned with the axis of symmetry of the matrix and the slide mechanism. A persistent protrusion 14 is made on the matrix, the lower plane of which is spaced from the lower plate 1 at a distance greater than the height of the finished part 15.

The stamp works as follows.

A batch of billets 8 is loaded into the magazine 7 in a horizontal position with curved edges in the direction of movement of the pusher 10. With the pusher 10, the lower billet from the magazine is fed to the tilter 13. Interacting with a curved edge with a curvilinear. with the tilter surface, the workpiece is rotated, takes a vertical position and falls under the action of its own weight into the channel.

Then the gate 12 of the pneumatic cylinder 11 moves the workpiece along the guides: 5 and 6 to the punch 3 at a distance equal to the width of the workpiece. When the press slide moves down, the punch 3 curls the loop, the gate 12 returns to its original position, and the pusher 10 delivers the following workpiece from the magazine 7 to the tilter 13. When the slider moves upward, the gate 12, feeding the next workpiece to the bending position, pushes the finished part 15 with it, since the latter is in height below the lower plane of the thrust protrusion 14.

The press operates in automatic mode for a long time, which requires occasionally replenishing the store 7 with blanks 8.

Claims (1)

SUMMARY OF THE INVENTION A stamp for the manufacture of loops from sheet blanks, comprising a punch mounted in the upper plate and a die placed on the lower plate with a stop protrusion, guides for feeding the blanks, a slide mechanism, and a magazine for blanks with a power cylinder mounted perpendicular to the axis pusher, characterized in that, in order to increase productivity and reliability, it is equipped with a tilter installed between the matrix and the sliding mechanism, made in the form of a Lyta and rigidly associated lock having a groove with a curved working surface, the generatrix of which is in the form of an elliptic curve, a concave part facing to the shop 'and' longitudinally disposed channel disposed. coaxial with the matrix and the slide mechanism, while the magazine is installed obliquely relative to the axis of the pusher. I 454554 6'6 I φυζΑ Compiled by V. Shabrova Editor M. Nedoluzhenko Tehred A “Kravchuk Proofreader N.Korol Order 7383/15 i Circulation 694 Subscription VNIIIPI State 113035, Committee for Inventions and Discoveries under the USSR SCST Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and printing company, Uzhhorod, st. Project, 4