SU1258562A1 - Die for working piece blanks - Google Patents

Abstract

The invention relates to a tooling for cold forming, in particular for punching holes. The goal is to improve the quality of products and the durability of the stamp by eliminating distortions and jamming of blanks

Description

The invention relates to a process tooling for cold forming, in particular to a tool for piercing grooves in the walls of hollow parts having a rectangular cross section, such as integrated circuit packages, and can be used in instrument engineering and other mechanical engineering industries.

The purpose of the invention is to improve the quality of the products and the durability of the stamp by increasing the reliability of movement of the blanks and their fixation in the working position.

FIG. 1 shows a stamp, lengthwise1 cut; in fig. 2 is a section A-A in FIG. 1; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. 2; in fig. 5 is a cross-section of the FIG. 3; in fig. 6 is a section d-d in FIG. 5j in FIG. 7 - product after punching grooves.

The stamp comprises a fixed base 1, a movable plate 1 of 2, a carriage 3 mounted in a groove made in the base 1, and a carrier punch 4 of a semi-matrix 5 located in the base 1, a wedge 6 and 7 fixed to the movable plate 2 and resting on the plate 8, mounted in the cavity of the base 1 and resting on the strand 9. The base 1 also has an L-shaped channel 10 for supplying blanks to the working position and channel 11 for removing the processed products. The stamp is provided with a mechanism for moving workpieces along channel 10, including a gate 12 placed in channel 10 with the possibility of moving along one of its mutually perpendicular parts, a slider 3 installed in another input part of this channel with the possibility of moving along it, a lever 14 connecting the gate 12 and the slider 13 and equipped with a spring 15 ,, gripping body, made in the form of another lever 16 installed in the slider 13. One end of the lever 16 is spring-loaded spring 17 to the lever 14, and the other end of the lever 16 emeschaets gate 12 .Shiber 12 and the carriage 3 are set to cooperate with the wedges 6 and 7. The base also smontirovny pusher 18 pressed against the spring 19 to the carriage 3, n pusher 20 pressed against the spring 21 to the slide

12, the slider 13 is provided with a means of braking, made in the form of a stop 22, and so forth: gins 23 located in the groove in the base 1, the stamp is provided

means for fixing the workpieces at the working position, including the pressing-out ejector 24, which is installed in the cavity of the base 1, the pressing 25 located in the movable plate 2, and.

the two latches 265 pivotally mounted at the base 1 are symmetrical about the axis of the pressing of the ejector 24 and interacting with the latter. Latches

26 are made with bevels and. Channel P communicates with channel 27 through which compressed air is supplied.

The stamp works as follows. When lowering the upper movable

PPITA 2 click b retracts the gate 12 to the left (Fig. Oe, the lever 14 rotates counterclockwise (Fig 2) and moves the slider 13 and the lever 16 E towards the gate 12 (Fig. 3),

The end of the lever 16; placed in channel 10, lowers, seizes the workpiece in channel 10 and feeds it to the end wall of the channel to the place freed from

the gate 12 (Fig, 1). This ensures reliable movement of workpieces from one part of the L-shaped channel 10 to another perpendicular part and feed to the working position.

.

Simultaneously with the plate 2, the presser 25 is lowered and presses the workpiece against the presser-ejector 24 (FIGS. 1 and 5). Since when lowering the plate 2 kpi

6 to 7 lower the plate 8 and the presser 24, the workpiece, sandwiched between the clamp 25 and the presser 24, is fed between the semi-matrix 5, With further lowering

plate 2 wedge 7 displace the carriage 7 3 and the punch 4 to the left and the last punches the grooves in the left (according to the drawing) wall of the workpiece, and then wedge 6 moves the carriage 3 to the right (FIG. 1)

 punch 4 punches the grooves in the right wall of the workpiece.

The plate 2 then rises and the carriage 3 and the gate 12 repeat their movements in reverse order.

In the final stage of lifting, the gate 12 is moved by the pusher 20 to the right (Fig. 1), the lever 14 rotates clockwise and knocks

3I

on the lever arm 16 (FIG. 3), since the slider 13 is under the influence of the spring-loaded stop 22, the lever 14, having overcome the resistance of the spring 17, turns the lever 16 clockwise. The lever arm 16 placed in the channel Yu rises the exit from the preform cavity until the other arm touches the sliders 13. After that, the slide bar 15 with the lever 16 resting on it, overcoming the force of the spring 17, begins to move with the slide 12 to the right. After the preform is removed by compressed air through channel 11, the next preform moves to the working position.

When the workpiece is moved to the right (FIG. 3) in a position coaxial with the working position, it lifts the latches 26 with the ends of its side walls and they press the workpiece to the upper end of the pressing end: a-ejector 24, which at this moment lifts up and performs the function the bottom of the output part of the channel 10; At the same time, the walls of the workpiece are not deformed, which prevents its jamming n {and feeding into the matrix

Filing the billet with a clamper, in which the billet at the working position remains in the position occupied by the movement, and the symmetric application of the efforts of fixing the latches exclude distortions and seizure of the billet, as a result of using the invention ensures the quality of products and durability of the stamp.

585624

Claims (1)

Invention Formula Stamp, processing of piece workpieces, containing a punch for punching - punching, a movable stitch, a fixed base, in which an L-shaped channel is made for supplying workpieces to the working position and a channel for removing finished products, a displacement mechanism blanks along one part of the L-shaped channel, including a gate installed in one of the mutually perpendicular parts of the channel and equipped with a displacement drive, and 15 means of moving the blanks along the other part of the L-shaped channel, the fixing unit of the blanks, including An ejector pusher, characterized in that, in order to improve product quality and die durability by increasing the reliability of moving the blanks and fixing them at the working position, the means for moving the blanks along the inlet part 5 of the L-shaped channel are made in the form of a slider, using a lever with a gate, a carrier bearing a lever, one end of which is spring-loaded to the slider and the other located in the channel with the ability to interact with the workpiece, and equipped with a braking means, made in the form of the base and the spring-loaded abutment thereto, and the fixation unit 2 is provided with a locking latch tion preform, mounted on the base symmetrically with respect to the axis of the outlet of the channel with the ability to interact with the workpiece and the clamp-ejector. 12 f 21 20 15 IN 3 FIG. if / 6 FIG. 6 shtgt Fiel Compiled by J. Tseitlin Editor Oh, Bugir Tehred I. Veres Proofreader M. Maksimishinets Order 5063/11 Circulation 783 Subscription VNIIPI USSR State Committee for inventions and offenses P3035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Proektna St., 4