SU1230723A1 - Apparatus for feeding sheet work to press - Google Patents

Description

The invention relates to the cold working of metals by pressure and may be used in the stamping industry of various industries, in particular for feeding sheet blanks to a press for cutting parts in a checkerboard pattern.

The purpose of the invention is to increase reliability.

FIG. 1 shows a kinematic diagram of a device for feeding sheet blanks to a press; the general view of FIG. 2 is a stamp for pressing the blanks J in FIG. 3 - the same, side view; in fig. 4 drive carriage movement.

The device for supplying sheet blanks to the press contains a frame 1, on the guides 2 of which a carriage 3 is mounted. On the carriage 3 a movable shelf 4 is fixed with supports 5 and a cam 6, cooperating with limit switches 7, 8, 9, yci; on the bed 1.

Limit switches 10 and 11 are mounted on carriage 3. Lead screws 12 with half-nuts 13 (mounted on carriage 3) inform the stepwise movement of carriage 3 in the transverse direction by means of an electric motor 14 via a V-belt transmission 15 and shaft 16.

The longitudinal movement of the carriage 3 with the sheet is carried out by the pneumatic cylinder 17 through the pneumatic fixer 18, the reciprocal; and operating with the bar 19 fixed rigidly on the carriage 3. The stopper 20 of the pneumatic cylinder 17 is stopped and set in motion by a limit switch 21 interacting with the limit switches 72-25.

The node return carriage 3 to its original position in the longitudinal movement consists of an electric motor 26, which through gear 27, chain transmission 28, sprockets 29, 30, clutch 31 and chain 32 connected by means of a rod 33 fixed on the bar 19, drives the carriage 3 , On the base 1 of the press, supports 34 and 35 are installed, associated with pneumatic cylinders 36 and 37 and limit switches 38 and 39.

Guillotine shears 40 and 41 are used for trimming the waste, on the sliders of which limit switches 42 and 43 are installed.

20

25

The blank blanks are manufactured by a press stamp 44.

The device for feeding sheet blanks to the press is as follows.

The processed sheet under the blanks is manually laid on the carriage 3 and fixed. At the initial moment, the mobile shelf 4 is retracted to the limit switch 9.

When the start button is pressed (not shown), the electric motor 26 is driven and, by means of a chain transmission 32, the carriage 3 with the sheet moves to the left up to the support 34. When the limit switch 38 is applied, the carriage 3 stops and a command of lateral movement of the carriage 3 K is pressed.

Moving the carriage 3 in the transverse direction is carried out from the electric motor 14 through a V-belt transmission 15, transmitting rotation to the shaft 16 and screws 12, imparting a step movement of the carriage 3.

The limit switch TO stops the cross feed to the press and at the same time gives the command to trigger the guillotine shears 40 and the press stamp 44 for cutting the workpiece.

After the guillotine shears 40 and their limit switch 42 are triggered, the limit switch 21 commands to move the carriage 3 with the sheet by means of the pneumatic cylinder 17 to the feed pitch to the working area (longitudinal feed) for cutting the next billet.

At the same time, the limit switch 21 commands the carriage 3 to be fixed by means of a pneumatic detent 18, which engages with the bar 19, and is connected to the limit switch 24, giving the command to move the carriage 3 to the final switch 25.

The entire cycle of processing the high-speed sheet is periodically repeated until the carriage 3 reaches the right extreme position and cuts the last one in the row of the workpiece.

At this time, the cam 6 attached to the shelf 4 issues a command to turn off the limit switch 8, giving a signal for the operation of the guillotine shears 41 and their limit switch 43.

thirty

35

40

45

50

55

After cutting the first row, the second row of blanks are cut down.

To this end, the support 34 is pushed to the right with the help of a pneumatic cylinder 36 to displace the sheet being processed in the longitudinal direction by the pitch of the pitch (for chess cut).

After that, the limit switch 21 triggers, advancing the command to release the carriage 3 latching and return it to the initial position to the left.

After the carriage 3 has moved to the support 34, the limit switch 39 operates.

Thus, the device for feeding sheet blanks to the press is prepared for further stamping.

Since two types of blanks are being cut in the press, bearing 35, which cooperates with pneumatic cylinder 37 and limit switch 39, is used when cutting blanks of larger diameter.

Limit switches 7 and 11 are also used.

The entire cycle is periodically repeated until the sheet is completely recycled.

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24 nineteen

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i З7777 20, 18 t U T

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Editor M.Dshyn

Compiled by A.P. such is Tehred M.Hodanich

Order 2478/13 Circulation 783 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Project St.

Proof-reader I.Erdeyi

Claims (2)

1. DEVICE FOR SUBMISSION OF SHEET Billets to the PRESS, containing a bed, a carriage for blanks, a drive of longitudinal and transverse movement of the carriage in a horizontal plane, characterized in that, in order to increase reliability, the carriage is made with a bar with sockets, the drive of the longitudinal movement of the carriage is made in in the form of a transmission with a finger, one end rigidly connected to a chain link, and the other with a carriage, and mounted on the frame of a power cylinder with a drive lock located on the stem of the power cylinder with the possibility of inter actions with strap sockets. 2. The device according to π. 1, on the one hand, in that the lock drive is made in the form of a power cylinder. About Y5 '14 Fig. 1