RU58439U1 - INJECTION FORM FOR SIMULTANEOUS MANUFACTURING AT LEAST TWO NON-CONNECTIVE AND NOT RIGIDLY CONNECTED PRODUCTS OF DIFFERENT CONFIGURATION, LOCATED IN THE CLOSED CONDITION OF ONE PRODUCT IS RELATED TO - Google Patents

Abstract

The invention relates to devices for processing plastics into products and can be used for the simultaneous manufacture of products of complex configuration with undercuts, in particular, a rod-shaped roller with washers at the ends and freely fixed to the suspension rod having a fastening element with a hole. Achievement of such technical results as casting a composite product in finished form, reducing the cost of an injection mold kit, increasing the strength of the finished composite product is possible due to the fact that the injection mold for the simultaneous manufacture of at least two integral and not rigidly connected products of different configurations located in the closed state of one product relative to another, characterized by the presence of a movable mounting plate, a fixed mounting plate with a hot runner, half pm, two opposite signs mounted on sliders located on the same axis and the ejector system, while it contains half-forms of at least two products, partially overlapping in the area of connection of these products, one of which, formed by opposite signs, has a rod in the area of connection of products bounded by its walls, each opposite sign of the injection mold is provided at the ends with at least one additional element protruding forward, additional elements belonging to the opposite signs of the VOG chickpeas towards each other with the possibility of forming in the working position a hollow body closed around the rod with a cross section in the form of a figure from a series of oval, circle, rectangle, triangle or polygon, with an internal maximum size smaller than the height of the product wall with the rod, but greater than the diameter of the rod, and the length of each additional element of the sign exceeds the length of the rod of the product by the wall thickness of the product with the rod.

Description

The invention relates to devices for processing plastics into products and can be used for the simultaneous manufacture of products of complex configuration with undercuts, in particular, a rod-shaped roller with washers at the ends and freely fixed to the suspension rod having a fastening element with a hole.

In injection molds, undercuts and openings of products are formed using signs, which, depending on the task, are performed and fixed in different forms in different ways.

From an analogous series, an injection mold is known comprising a fixed plate with a expanding element, a movable part including a matrix and a mark, comprising expandable segments pivotally mounted in the movable part, a compression element interacting with the expandable segments, and an ejector, intermediate and base plate, as well as L-shaped segments mounted on an intermediate plate between expandable segments with the ability to move to the center of the form [A.S. No. 556948, BI No. 17, 09.09.77]. Known injection mold can be used in the manufacture of products of complex configuration with internal annular, multidirectional and threaded undercuts. It features a sophisticated design.

registration mark and does not solve the issue of casting one-piece composite products.

At a known technical level, a prototype of the claimed invention was not found both in terms of the combination of essential features and in the technical results achieved.

The objective of the invention is the simultaneous casting of an integral integral product, consisting of at least two individual products of different configurations, not rigidly connected to each other.

Technical results that can be obtained using the claimed invention are

- Casting a composite product in finished form;

- Reducing the cost of the mold kit;

- Increasing the strength of the finished product;

- Reduced material consumption.

The solution of this problem and the achievement of the expected technical results became possible due to the fact that the injection mold for the simultaneous manufacture of at least two integral and not rigidly connected products of different configurations, in the closed state of one product relative to the other, is characterized by the presence of a movable mount plate, a fixed mount plate with a hot runner, a half-mold, two opposite signs fixed on sliders located on the same axis and ejector system, etc. and this it contains half-forms of at least two products, partially overlapping in the area of connection of these products, one of which, formed by opposite signs, in the area of connection of products has a rod bounded by its walls, each opposite sign of the injection mold is equipped with at least one protruding forward by an additional element, additional elements,

belonging to opposite signs are concave towards each other with the possibility of forming in the working position a hollow body closed around the rod with a cross section in the form of a figure from a row, an oval, circle, rectangle, triangle or polygon, with an internal maximum size smaller than the height of the product wall with the rod, but greater than the diameter of the rod, and the length of each additional element of the sign exceeds the length of the rod of the product by the wall thickness of the product with the rod.

Implementation of the claimed combination of features allows for at least two products to be cast simultaneously in one technological cycle, i.e. products, including a rod bounded by walls, for example, a roller and hook-type products with a ring that rotates freely around the roller rod, which are already connected to a prefabricated integral part during casting.

The invention is illustrated by the following figures.

- Figure 1. Injection mold, section along AA

- Figure 2. Injection mold unit;

- Figure 3. Finished finished product in the form of a roller and hook, top view;

- Figure 4. The area of partial overlap of the cavities of the cast diverse products, a section along AA;

- Figure 5. Also, a section along BB;

- Fig.6. Also, a cut along CC;

- Fig.7. Also, a cut along EE;

- Fig. 8. Hook and roller in oxonometry.

The injection mold (FIGS. 1 and 2) contains a fixed mounting plate 1 with a hot runner 2, a movable plate 3, sliders 4 and opposite signs 5 fixed or integrally formed on them, directed towards each other and located on the same axis,

coinciding with the line of the connector. Each of the opposite signs 5 is equipped with at least one additional element 6 of the sign 5 protruding beyond the end of this sign 5. The injection mold also includes half-forms of at least two products 7 and 8, partially overlapping in the connection area of these products 7 and 8, while the product 7 formed by opposite signs 5, in the product connection area has a shaft 9 bounded by its walls 10. The hot runner 2 has at least two sprue channels 11, 12, namely, the sprue channel 11, designed to supply the melt into the cavity (for fi . Not shown) for the product channel 7 and the runner 12 for feeding the melt to the cavity (Fig. Not shown) for product 8 (Figures 1 and 5). Additional elements b of each opposite sign 5 are concave towards each other with the possibility of formation in working condition of a hollow body closed around the rod 9, forming in cross section a figure (Fig. 6) from a row oval, circle, rectangle, triangle or polygon, with an internal maximum size smaller than the height of the wall 10 of the product 7, but larger than the diameter of the rod 9, and the length of each additional element 6 of the sign 5 exceeds the length of the rod 9 by the wall thickness of this product 7 with the rod 9. To remove annogo finished composite article mold ejector system is provided comprising a top plate 13, bottom plate 14, and pushers 15, the ejector products 7 and 8 of the mold halves 16 fixed to the movable platen 3 via the spacer bars 17.

The inventive injection mold works as follows. Collect the mold. The half-molds of the molded and joined products 7 and 8 in the closed state form two partially overlapping cavities, while the half-mold of the product 7 with the rod 9 is located on the same axis of symmetry with opposite signs 5,

forming this product 7. In working condition, additional elements 6 of opposite signs 5 form around the rod 9 a hollow body with a cross-section in the form of a figure from a series of circle, oval, triangle, rectangle and polygon, which allows you to form a hole of a given configuration in the fastening element of the second product by protection of the outer surface of the mold element of the product 7 with the rod 9 in the region of this rod 9, and the length of the additional elements 6 of the signs 5 ensures the complete isolation of the rod 9.

The polymer melt, passing through the sprue channels 11 and 12, enters the cavities formed by the half-molds of products 7 and 8. In these cavities, the melt solidifies, forming a finished composite product from interconnected products 7 and 8. When the half-molds are connected, the signs 5 diverge and their additional elements 6 release the formed hole of the figure 8 of a given shape, through which the rod 9 of the product 7 is freely passed. The movable mounting plate 3 is removed and the pushers 15 are simultaneously pushed out of the half-molds 16 fixed on the movable plate 3 through h distance bars 17, finished composite product.

The practical applicability of the mold shows the following example of a specific application.

Example.

The casting mold includes half-molds for a roller and half-molds for a hook with a closed fastening element in the form of a ring, while cavities for casting products are combined in the region of the rod and the hook fastening element. Polypropylene is used as a polymer. The duration of the technological cycle was 12 seconds. An integral integral finished product is obtained - a hook, dressed on a roller shaft.

As can be seen from the example, the finished composite product is cast in one technological operation, which significantly reduces time and labor. The finished composite product has no connectors, which increases its strength and reduces material consumption, and the reduction in the cost of injection molds is achieved by casting two types of products in one injection mold.

Claims (1)

The injection mold for the simultaneous manufacture of at least two integral and not rigidly connected products of different configurations, in the closed state of one product relative to the other, is characterized by the presence of a movable mounting plate, a fixed mounting plate with a hot runner, a half-mold, two opposite signs mounted on sliders, located on the same axis and the ejector system, while it contains half-forms of at least two products, partially overlapping in the connection area of these products lines, one of which is formed by opposite signs, in the product connection area has a rod bounded by its walls, each opposite mold sign is provided with at least one additional element protruding forward, additional elements belonging to opposite signs are concave towards each other with the possibility of education in the working position closed around the core of the hollow body with a cross section in the form of a figure from a series of oval, circle, rectangle, triangle or polygon, with internal maximum size smaller than the height of the wall of the product with the rod, but larger than the diameter of the rod, and the length of each additional element of the sign exceeds the length of the rod by the thickness of the wall of the product with the rod.