SU41178A1 - Tool for making wooden boards by pressing - Google Patents

Description

In industry, a considerable amount of wooden boards is currently consumed, but due to the lack of precious wood, it is necessary to make birch and even spruce, the service life of which is extremely insignificant. In order to increase the service life of shoulder straps, a method of pressing is known, which makes it possible to significantly increase the strength of wood further than the least valuable wood species.

In this method, the dies in which the pressing takes place must be moved several times (to the furnace for heating, from the furnace to the press, from the press again to the furnace, from the furnace to the furnace;) and), and if the dies have a considerable weight, It is unproductive to expend a lot of mechanical energy and a large amount of heat to heat the metal of the atrium.

To IMPROVE these drawbacks and at the same time to obtain good quality wooden steps by means of pressing, a device is proposed in which a support for the form with a sponge is used to eliminate the expansion of the walls of a lightweight form of a press (274)

one sponge is motionless, and the other is made adjustable.

In FIG. 1 is a front view of the device; FIG. 2 - the same in the top view; FIG. 3 - the same in the side view; FIG. 4, 6, 8 - side view of the punches in the fixture; FIG. 5, 7 is the same in front view; FIG. 9, 10 - the same in the top view; FIG. 11 is a front view of a bar and a punch fixed with a pin in a clamped position; FIG. 12- side view of the pin; FIG. 13 - the same in cross section; FIG. 14 is the same rear view.

The proposed fixture consists of a thin-walled Form I (Figures 1 to 3) in which a wooden blank 3 is being inserted, to be pressed, R into which punch 2 enters.

Two features are presented in the box, mounted on the same support cushion 15 mounted on a hydraulic press.

On the support cushion 15, in order to maintain the shape 1, the sponges 11, 12 and 1G, 12 are fitted with steps 14, on which the molds 1 are supported. The sponges 11 and 11 are fixed to the plate 15, and the sponges 12 and 12 are made adjustable. In the plate 15 there are cuts 16 in which the pins 17 are attached, attached to the jaws 12 and 12 and preventing the movement of the jaws 12, 12 along the fixture. Between the movable jaws 12, 12, a space is left into which, after the installation of the forehead 1, two wedges 18 and 18 are inserted on the jaws, pressing the movable jaws 12, 12 to the molds 1 and thus clamping the molds 1.

The blanks to be pressed on the fixture have a shape corresponding to the shape of the heads, but with an allowance for pressing. Let us suppose, for example, that it is necessary to fabricate batches having a thickness of 20 mm at one end and 6 mm at the other end, and that the size of the stock in the workpiece is about mm for both thick and thin ends. Then the thickness of the workpiece from one end will be 25 mm, and from the other 11 mm. Accordingly, the punch 2 of the mold 1 has a lower surface inclined, respectively, the difference in the thickness of both ends of the workpiece, and the upper surface is horizontal or, in other words, the punch 2 has a lower surface when the horizontal upper surface is bevelled parallel to the upper surface of the finished wafer, located flat on the horizontal plane.

After pre-pressing, form 1 must be locked so that the bar in it will be in a clamped state. For this, pins 4, having the form of straight rods and shown in FIG. P. The pins 4 are inserted into the holes 6 of the form I (Fig. 1-3) and pass over the punches 2. During the final pressing, the bar must be compressed and the form must be locked again. This is done by means of shaped pins 5. Pin 5 (Figs 12, 13 and 14) has an oval shape in the middle, at one end is a stubborn thickening 7, ending with a four-sided head 8, and at the other end is a toe 9, ending with a cone, moreover from the thickening 7 to the cone of the nose 9, the pin 5 is planed along the plane on one or both sides.

Figured plugs 5 are inserted into the holes 10 of the mold 1 (Fig. 1, 2 and 3), pass over the plunger 2 and are installed with a large vertical cross section with its transverse size (Fig. 3 and 13), so that the walls of the mold 1 (Fig. 1 -3) they cannot disperse to the sides, since on the one hand they resist the thickening, 7, and on the other hand, the toes of the 9 figured curbs 5.

To transfer the pressure from the press to the punches 2 of the mold 1, there are other pistons 22, 22 which are provided with notches 23 (Fig. 1-3) at the locations of the pins 4 and 5 during pressing.

After pressing the wooden blanks, the punches 22 and locking the molds 1 with pins 5, wedges 18 and 18 are removed to release the molds. In order for the jaws 12 and 12 to be able to automatically move away from the molds 1, springs 19 and 19 are used, which are placed in the slots 16 of the plate 15 and which are fastened with their ends to the studs 17, connected, as mentioned above, with Nishi sponges 12 and 12.

Upon removal of the jaws 12 and 12, the mold 1 is released from their clamping and can be freely removed from the press along with the punche 2 and the workpiece 3, clamped by pins 4 and 5.

After cooling of the compacted strip, there still remains an elastic aftereffect, which receives bar 3 to the punch 2, which in turn clamped May curly pins 5 in the openings 10 of form 1, which would make it difficult to remove the pressed caps from the mold, if not There were sections along the length of the middle part of the pins 5. In view of the presence of these sections, you can rotate the pin 5 with a wrench placed on the four-sided head of the 8 pin (Fig. 12-14) so that the cut side of the pin is parallel to the punch 2, and sufficient Azores between the pin 5 and punches 2 and pin 5 is easily taken out from the holes 10 form. As for the pins 4 used for locking the form I after the preliminary pressing, they are completely freely removed from the holes of the form during the final pressing by the gun 22.

In order that the pressed and cooled in the form of wads can be easily removed from the matrix 1, the last one is made 1-FWM wider at one end and through the wide band the ready wrap is taken out. Accordingly, this form of the matrix 1 and the punches are made narrowed from the sides of one end, as indicated in FIG. 5 and 7.

The subject matter of the invention.

Claims (5)

1. A device for making wooden blocks by pressing, characterized in that in order to eliminate, in the period of pressing the block, the burrs of the side walls of the form 1 (Fig. 1, 2) were used to support the pad 15 with sponges 11 and 12 , of which the sponge is immobile and the sponge 12 is made adjustable. 2. In the device according to claim 1, the use of two systems of pins 4 and 5, of which the pins 4 serve to fix the workpiece in a compressed state, and the pins 5 are intended to communicate with each other the side walls of the form 1 when it is removed from the mouth of the jaws 11 and 12. 3. In the attachment of claim 1, in the case of using two parallel-working molds, wedges 18 and 18 are used to push the jaws 12 and 12 when clamping these molds, for bringing them together, in order to loosen the clamp, the springs 19 associated with them and 19. 4. In device no. 1, the use of punches 22 with notches 23 in the locations of the pins 4 and 5. SETS-. I. -.J1, nx 4 -fi-Jo /, ,, - / J /, о®.:.:; ..... © c ;; L / GASP1P /, l / T. .V / H .... .. fiii., ;; ./ 7рп L 1 i; / I I I .; -one. i L, 1 coig.s; / 5 .. X-V ./ / . four CETi n I, v-i Q .B sssig.a.// J ° / s / o t / sgzig.TS . S alig 5.Q cj: 3nr.l2 a: 1ig.Sh rtawri , fl.-r.-i O G /