SU1229058A1 - Versatile mould-block for manufacturing articles from polymeric materials - Google Patents

Description

The invention relates to the processing of polymeric materials, in particular to tooling, and can be used in multi-product and small-scale production of plastic products.

The purpose of the invention is to expand the technological capabilities of the universal block form.

Figure 1 shows a universal block shape, incision; Fig. 2 illustrates the installation and fixation of a counter-tappet for a changeable package; on fig.Z - matrix made in the cassette; Fig. 4 shows a section A-A in Fig. 3 (in the case of adjustment and interaction of a replaceable package with a block-form when pushing products out with a plate for removal); Fig. 5 shows a universal block-shape with a replaceable package having wedge matrices for articles with undercuts.

A universal block form for the manufacture of products from polymeric materials contains plates and 2 with a T-shaped groove for fastening the interchangeable bag 3, plates 4 and 5 of the ejector system, interchangeable bag 3 with pushers 6 having notches 7 at the ends, and a locking device, the exchange in the ejection plates 4 and 5 with the possibility of interacting with the notches 7 of the pushers 6. The locking device is made in the form of a plate 8 with holes installed with the possibility of moving perpendicular to the axis of the pushers 6 and equipped with a mechanism for its movement, hinged in the form of a driving screw 9 with a nut 10 mounted on it, having a protrusion 11 on the outer surface, and a groove in which the projection of the screw 10 is placed in the plate 8 of the locking device. To prevent axial movement of the driving screw 9, a restrictive ring 12 is mounted on its shaft which is locked with a pin 13. A pin 14 with a shank 15, which serves as a central pusher, is attached to a plate of 4 ejectors. For the fixed plate 16 and the movable plate 17, a universal block-form is attached to the plates of the injection molding machine. A stove serves to support the replacement package.

about 5 0

0

five

18, and for placing plates 4 and 5, bars 19.

In the block-form, replaceable bags can be fastened with pushing out products with single pushers directly from the dies (Fig. 1) and removable bags with clip dies (Fig. 5).

In the plates 4 and 5 of the ejector system. We and in the plate 18 coaxially with each other, holes 20-22 are made. The holes 20 are designed to install the counter-clips 23 of the interchangeable bag 3. The holes 21 serve to install the counter-thrusters 24, which are fixed with screws 25. The holes 22 are made in the required quantity over the entire free area of the plates 4.8 and 18 and are arranged in order of rigidity plates

A universal block form for the manufacture of products from polymeric materials works as follows.

Prior to installation on the injection molding machine or directly on the injection molding machine, a replaceable bag 3 is inserted into the block form in the T-slots of plates 1 and 2. The pushers 6 are inserted into the holes in the plates 4.8 and 18. When the screw 9 is rotated counterclockwise the nut 10 moves progressively and displaces the locking plate 8 up to the stop in the recesses 7 on the pushers 6. Thus, the pushers 6 of the interchangeable bag 3 are fixed and the block form is ready for operation on the injection molding machine. After the required batch of products has been manufactured, the screw 9 is rotated clockwise, the nut 10 lifts the locking plate 8, the pushers 6 are released, the replaceable bag 3 is removed from the T-shaped grooves of the plates 1 and 2, and another one is inserted in its place the plates 1 and 2 and the fastening of the pushers 6 in the plates 4 and 5 are repeated and the block form is ready for the manufacture of products of a different configuration.

Casting products is carried out as in the usual stationary injection mold.

The proposed implementation of a universal block-shape allows you to extend its technological capabilities due to the rapid change of packages and pushers.

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Claims (1)

UNIVERSAL BLOCK FORM FOR MANUFACTURING PRODUCTS FROM POLYMERIC MATERIALS, containing plates' for attaching a replaceable bag, plates of an ejector system, an exchange bag with pushers having recesses at the ends and a locking device located in plates of the eject system with the possibility of interaction with recesses the fact that, in order to expand technological capabilities, the locking device is made in the form of a plate with holes for pushers installed with the ability to move perpendicular to the axis pushers and equipped with a mechanism for its movement, made in the form of a lead screw with a nut placed on it, having a protrusion on the outer surface, and a groove is made in the plate of the locking device in which the nut protrusion is placed. FIG. / KE S © O JV QO