SU128334A1 - Machine for forming on the block of the workpiece with a pre-sewn welt - Google Patents

Description

Machines for shaping a pre-sewn welt on a block are known, made in the form of adjustable molds mounted on a frame, and their plates having the ability to move in horizontal and vertical planes.

The described machine differs from the known ones in that it is equipped with a device for fixing the molded preform on the block, made in the form of two profile-plates interacting with each other. This makes it possible to improve the quality of forming the blank. To simplify the adjustment of the position of the simultaneously operating forming plates in accordance with the dimensions of the footwear being processed, their drive is made in the form of a series of stars with an endless chain, each of which has an eccentric pin rigidly fixed at one end, the other end of which is connected forming plate.

FIG. 1 shows the kinematic scheme of the maschina; in fig. 2 and 3 - various moments of operation of the mechanism of the forming plates.

The machine consists of two sections: for the right and left half of the pair of shoes. On the machine bed in each section, nine forming plates 1 are located, located along the edges of the block with blank 2. A welt 3 is pre-attached to the blank. Each forming plate is fixed on the forming mechanism consisting of body 4 with fork 5, stand 6 and sleeve 7.

On the rack 6 there is a slider 8, equipped with a spring 9. A bracket 10 is rigidly attached to the slider 8, on which links 11 I 12 vi corner lever 13 are placed. with the workpiece 2 is fixed stops and pins in a certain position. When lifting platform 15 rises

Eh 128334-2 -

the pusher 14 and rotates the angular lever 13. The latter, acting on the link 12, rotates the link 11 so that it rests on the stop 17, then the whole system, including the platform 15, the pusher 14, the angular lever 13, the link 12 and //, the bracket 10 and the slider 8 rises up. Then platform 15 begins to move down. Since the spring 9 brakes the slider 8 and does not allow it to move down with the platform, the corner lever 13 turns back, moving links 11 and 12 n the forming plate (I) towards the block with the workpiece 2. The forming plate 1 begins to abut with its edge on the block with the workpiece, and as the platform 15 continues to slide down, the plate (also lowers) and, meeting the welt 3 in its path, draws out the workpiece. After the slide 5 reaches the stop 18, the lowering of the bracket 10 stops, but as the platform 15 still continues to lower, the corner lever 13 rotates and forcefully pushes the astine along with the welt and the edge of the workpiece under the track of the shoe.

Two profiled plates 19 are mounted on the frame, which are simultaneously moved by hydraulic actuator 20 along guides 21 to the block with the workpiece. After the plates 1 have folded the edge of the workpiece together with the welt under the track of the shoe, the plates 19 come into action, which enter the gap between the shoe with the workpiece and the plates I, close together and fix the workpiece in the molded form. After that, the forming plates 1 move to their original position, and the block with the workpiece together with the plates 19 is removed from the machine.

To adjust the position of the forming plates 1 according to the dimensions of the shoes, a pin 22 is inserted into the plug 5, eccentrically mounted on an asterisk 23.

The sprockets of all the forming plates are united by a common chain of 2L. When the chain moves, the 24 sprockets of all the plates turn to the same angle, moving the forks 5, and change the position of the forming plates 1 with respect to the block with the workpiece.

Subject invention

Claims (2)

1. A machine for forming on the block of the workpiece with a pre-protected welt, made in the form of adjustable forming plates mounted on a frame, which can be moved in horizontal and vertical planes, characterized in that, in order to improve the quality of the molding, the machine is equipped with a device for fixing molded blanks on the block in the form of two profiled plates interacting with each other. 2. The machine according to claim 1, characterized in that in order to simplify the adjustment of the position of the simultaneously operating forming plates in accordance with the dimensions of the footwear being processed, their drive is made in the form of a series of sprockets connected by an endless chain, each with an eccentric finger fixed the other end of which is connected to the forming plate through a kinematic chain.