CS241704B1 - Apparatus for changing the length of the press during compression in the composite transfer tool - Google Patents

Abstract

The purpose of the solution is to reduce the cost of pressing complicated elongated moldings from coils: - A holder (2) with a pneumatic cylinder (3) is located in the base plate (1). The piston rod (4) in the bushes (5) is connected to a carrier (6) engaging the fork (7) with an intermediate transverse drive arm (8) connected to the feeder ridges (9) placed on the rails (12) with the tappets (13) and springs (14). The holding plate has sliding stones (11). The moldings are still held by the strip (15) on the vertical. piston rods (16) with rollers (17) and air inlet (P). . The retained moldings separate the shears (10) from the belt. The piston rod (4) moves the carrier (6) controlling the fork (7), which moves the ridges (9) through the arm (.8) by the feeding length (B). Before. by moving it back, the sliding stones (11) compress both arms with the ridges (9), which are then moved back. When the tool is opened, the sliding stones (11) release both arms and the ridges (9) are pushed out by the springs (14) to the starting position.

Description

(54) Device for changing the length of feeds when molded in a compound transfer tool i

-The purpose of the solution is to reduce the cost of pressing complex shape elongated moldings from coils:

- In the base plate (1) there is a holder (2) with a pneumatic cylinder (3). The piston rod (4) in the housings (5) is connected to a carrier (6) which fits into the fork (7) with an inserted transverse driving arm (8) connected to feed ridges (9) supported on rails (12) with tappets (13) and springs (14). The retaining plate has sliding blocks (11). The moldings (15) are still held by the moldings on the vertical. piston rods (16) with rollers (17) and air supply (P).

. The retained moldings separate the punches (10) from the belt. The piston rod (4) is moved by the carrier (6) operating the fork (7), which by means of the arm (.8) moves the ridges (9) by the length of the feed (B). Before. By moving backwards, the sliding stones (11) compress the two arms with the ridges (9), which then slide back. When the tool is opened, the sliding blocks (11) release both arms and the ridges (9) are pushed by the springs (14) into the starting position.

The present invention relates to an apparatus for changing the length of feed during compression in an associated tool for producing coil moldings.

Complex elongated moldings have been pressed in several operations divided into individual tools. For mass production, one associated transfer tool with a belt feeder is used upstream or downstream of the tool. The length of feed (step) of the feeder is given by the technological shape of the molding and the technological possibilities of the tool. This results in increased labor or material consumption during pressing.

The aforementioned drawbacks are eliminated by a device for changing the length of feeding during the pressing in the composite tool, which consists in that in the base plate there is a holder with a pneumatic feeding cylinder, the piston rod housed in the sleeves is firmly connected with the carrier which fits into the fork groove in which the transverse driving arm is slidably mounted from above. On the transverse driving arm and the transverse arm there are attached feed ridges which lie on the lifting bars with the tappets in which the springs are mounted. In the upper part of the tool, sliding stones are connected to the holding plate, which abut against the transverse driving arm. Permanent holding of the compacts is ensured by a bar which is suspended from the vertical rails inserted slidingly into the pneumatic air supply rollers. The moldings in the locked position by the holding plate separate the punches of the belt by the punches.

By means of a feeding device according to the invention, it is possible to transfer or move the separated compacts by a feed length (step) that is technologically most advantageous for a given shape of the compact. At the end of the last operation in the tool, the compacts are ejected from the tool by feed ridges, which is more advantageous than frequently used blow molding with compressed air, since the noise level is reduced and the energy required to produce compressed air is reduced.

In the accompanying drawing of FIG. 1, a composite progressive die for changing the length of feed during the pressing in the composite tool of the invention is shown in longitudinal section. The drawing of FIG. 2 is a cross-section A-A of the bottom of the tool shown in FIG. 1.

According to the illustration, in the base plate 1 there is a holder 1 with a pneumatic feed cylinder 3, whose piston rod 4 is housed in bushes 5. The carrier 6 is firmly connected to the piston rod 4, which fits into the slot of the fork 7.

8. The feed ridges are fastened to the transverse driving arm 8 and the transverse arm 18

In the upper part of the tool, sliding stones 11, which abut the transverse driving arm 8 and the transverse arm 18, are connected to the holding plate. The retaining of the moldings is ensured by the bar 15. suspended on vertical piston rods 16 inserted into pneumatic cylinders 17 with air supply P. The moldings are separated from the belt by punches 10.

The operation of the device for changing the feeding length when pressing in the composite tool can be explained as follows: The moldings are locked in position by the holding plate, separated by punches 10. After lifting the holding plate of the piston rod 4 of the pneumatic pickup roller 3 moves in the feed direction R by the gripper 6 This shifts the feed ridges 9 by an increased feed length B by means of the transverse drag arm 8. Before moving backwards, the sliding stones 11 associated with the retaining plate compress the transverse drag arm 8 and the transverse arm 18, thereby sliding the feed ridges 9 underneath. level of the feed plane and move back. Upon opening the tool, the slide blocks 11 release the transverse driving arm 8 and the transverse arm 18, the lifting ledges 12 by means of tappets 13 with springs 14 push the feed ridges 9 into the starting position. Throughout the cycle, the moldings are pressed in the direction S of the air restraint bar 15.

Claims (1)

SUBJECT Apparatus for varying the feed length when molded in a composite transfer tool, in particular for the production of complicated elongated moldings also from coils, provided with punches and feed ridges disposed on the base plate, characterized in that a holder (1) is disposed in the base plate (1). 2) with a pneumatic feed cylinder (3), the piston rod (4) of which is housed in the sleeves (5) is rigidly connected to the carrier (6), which fits into the groove of the fork (7) in which the transverse driving arm (8) ), on which the feeding ridges (9), which lie on the lifting ledges (12) with the tappets (13), in which the springs (14) are inserted, are fastened to the invention, whereby. in the upper part of the tool, sliding blocks (11) are attached to the holding plate, which engage the transverse driving arm (8) and the transverse arm (18) and that holding the moldings from above is ensured by a bar (15) hinged on the vertical piston rods ) slidably mounted in pneumatic cylinders (17) with air supply (P).