SU1310075A1 - Drawing die - Google Patents

Abstract

The invention relates to the technology of metal forming and can be used in various fields of mechanical engineering using sheet metal forming methods. The purpose of the invention is to simplify the punch design by providing automatic removal of the finished product during the stretching process. The stamp has ij 18 16 th 17 1 F (L with F J

Description

punch 2, placed at the top. Matrices 4, 5, 6 and 7 are made in the form of a prismatic unit (B) 3 mounted on the bottom plate with the possibility of rotation around a horizontal axis. Matrices 4, 5, 6 and 7 are coaxially placed on the opposite faces of the B 3 and connected by channels 8, 9, 10 and 11, in which the ejector pins (B) 12, 13, 14 and 15 are located and at least three balls (Ø) sixteen,

one

The invention relates to the processing of metals by pressure and can be used when drawing parts with vertical side walls and automatically removing them directly from the die.

The aim of the invention is to simplify the design of the stamp by providing automatic removal of the finished product during the drawing process.

The drawing shows a stamp at the time of manufacture and removal of the finished product, a general view.

The stamp contains a punch 2 fixed on the slider 1, a matrix block 3 of a prism-shaped stamp with dies 4-7, on the central axis of which channels 8-11 are located with ejector 12-15-15 placed in them, between which end faces are placed a part removal unit made of three balls 16, 17, 18.

The stamp at work takes four positions (I, II, 111, IV). Each position is fixed by rotating the block 3 by 90 °.

The stamp works as follows. The first workpiece 19 is fed into the loading area of the stamp I (at the beginning of the work of the stamp, any of the matrices 4-7 can be located in the loading area), fixed in a certain position, the block 3 is rotated by 90 and fixed (fixing units not shown)

From position 1, the matrix 7 with the first workpiece 19 occupies position II. Pushers 12-15 and balls 16, 17, 18 in channels 8-11 are in an arbitrary position. When moving the slide

17 and 18. One Ш is located in the intersection zone of channels 8, 9, 10 and 11, and all Ш 16, 17 and 18 form a right angle between them. During punching, the punch 2 acts on the workpiece 19, moves B12, W16 and 17, as well as B 14, which removes the product 20 from the die 6. The stamping of the next product 20 takes place when the B 3 turns 90. 1 Cpf-ly 1 Il.

1 downward, the punch 2 draws the first workpiece 19, and at the same time, the second workpiece 19 is fed and secured to the position 1 zone. When the slider 1 is raised, the second rotation of the block 3 by 90 occurs. The process repeats to the position when the first shaped workpiece 20 takes position IV and is in matrix 6.

The preform 20 is in the matrix 5, the pusher 13 is in the channel 9. The pusher 12 of the matrix 4 is in the upper position and with the balls 16, 17 and the pusher 14 is located on the same axis in the channels 8 and 10. The pusher 15 and the ball 18 are in channel 11.

When the slider 1 moves down, the punch 2 starts drawing out the third blank 19. The punch 2, through the forming third blank 19, acts on the pusher 12, the latter goes down, acting on the balls 16, 17 and the pusher 14, which pushes the formed first part 20 into position zone IV . When the slider is raised to the upper extreme position, the block 3 is turned 90, and the process is repeated, i.e. the removal of the finished part 20 occurs simultaneously with the extraction of the next billet at each turn of the block 3.

The stamp can operate in automatic mode, provided the automation of the supply of blanks.

Structurally, the stamp can perform an additional operation, such as extrusion molding or punching holes on the side surface of the product, by means of a device including a series of brackets and levers, shown in dotted lines.

The use of the invention reduces the time required to remove the finished part from the working area of the punch by combining the time of the forming operation and the operation of removing the part, and also simplifies the design of the punch by eliminating the additional device for removing parts.

Claims (2)

1. A die for drawing, comprising a lower plate, a punch, a matrix made in the form of a prism with four working cavities located coaxially on the opposite edges and connected intersecting in the center editor. N.Hvydka Order 1821/8 Compiled by O. Matveeva Tehred M. Khodanich Proofreader S. Cherni Circulation 733 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project A, 4 10075 re channels which ejectors are installed, characterized in that, in order to simplify the design of the punch by providing automatic removal of the finished product during the drawing process, the matrix is mounted on the bottom plate with the possibility of rotation around the horizontal axis and is equipped with at least To at least three, placed in the channels between the supporting ends of the ejector and with the ability to interact with them, while one of them is installed in the zone of intersection of the channels. 2. A stamp in accordance with claim 1, of tl and h a yu-. u and with the fact that the balls are installed in the channels, forming a direct barrier between them.