RU2639162C2 - Built-up press-mould - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: built-up press-mould comprises a stationary block having a movable and a stationary part, and replaceable pack - a forming block consisting of a die, a punch, a plate of ejectors, and ejectors. The movable part is made of interconnected support plate, a fastening plate, a shank plate connected to the stem and mounted with for movement along the guide columns, and fastening strips. The fixed part consists of the fastening plate connected to the gate plate, on which the hold-down strips are fixed, and the columns connected to the fastening plate and the gate plate are installed.

EFFECT: reduced number of stationary press moulds, simplified design and possibility for using changeable block-packs which makes it possible to increase the range of manufactured products and reduce costs for production of casting moulds.

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Description

The invention relates to foundry, in particular to the molding of plastic products, non-ferrous alloys and other materials that can be pressed on manual and automatic machines.

A known device and method for melting and casting metal in a vacuum environment by melting the starting metals, including filling the mold cavity with molten metal inside the device, casting the metal. Moreover, the metal melts, and then the product is molded in high vacuum (Application No. PCT / KR 2015/005675. Publ. No. WO / 2015/199351 of 12.30.2015).

A known invention, comprising a device and a method of processing metal products by pressure, in accordance with various embodiments, the device comprises a matrix with a hollow cavity of the reservoir in the first part of the surface of the stamp and a cavity for forming recesses in the second part of the surface of the matrix adjacent to the first part; and a stamp, including a protrusion on the surface of the punch facing the surface of the mold. The punch is arranged to move relative to the matrix to move the surface of the punch relative to the surface of the die to introduce the protrusion of the punch into the matrix of the cavity of the tank (Application No. PCT / SG 2015/050266. Publ. No. WO / 2016/028229 of 02.25.2016).

However, the known invention does not have the ability to use a removable block package of forming matrices, a punch.

A casting device is known, which includes: castings (19, 21) forming a cavity (22) having an opening in its lower part; the pressure maintaining chamber (10) located under the molds contains molten metal (A) and forms an insulating space above the molten metal; a tubular shaft (18), the hole in the upper end is in contact with the hole of the cavity, and the hole of the lower end is immersed in molten metal in a pressure chamber; sealing means (16) that seal the inside of the pressure in the chamber by supplying gas inside an isolated space in the chamber; an injection means for reducing pressure (32), which reduces the pressure inside the cavity by pumping gas from the cavity; and a control device (33). When molten metal is poured into the cavity from the pressure in the chamber, the control device does not seal the interior of the chamber with injection means until the molten metal reaches the cavity opening, and after the molten metal reaches the cavity opening, the control device reduces the pressure inside the cavity by decompression means, continuing to seal the inside of the pressure in the chamber (Application No. PCT / JP 2013/082182. Publ. No. WO / 2014/147892 of 09.25.2014).

However, the known device for casting does not have the ability to use interchangeable forming matrices, punch.

A variety of mold designs for producing plastic products are known, which is due to the variety of manufactured products, the properties of the material from which they must be made, the nature of production, etc. (Electronic resource: http://delta-grup.ru/bibliot/1/82.htm; http://knigitut.net/2/95.htm).

However, the known source does not describe the design of molds having a type-setting element - block package.

A known mold for the manufacture by injection molding of plastic products of a disk form with a Central hole, equipped with heating means to maintain the plastic in the channel 10 in a plastic state. The first heating means 23 is made in the form of a cylindrical shell installed concentrically with the sleeve 9. The second heating means 27 is placed around the block 26 of the sprue sleeve 16. The sleeve 16 in the area under the inlet sprue 13 has a tapered outer surface with a slight slope so that there is no damage to the wall of the central hole products when opening the mold. The inlet gate 13 may be made in the form of a plurality of holes located around the entire periphery of the sleeve 16, or in the form of an annular hole located around the sleeve 16 (Patent No. 2072918 RU. Publ. 10.02.1997).

However, the construction of the known mold does not contain a replaceable block package of a matrix and a punch.

A low-waste mold is known, consisting of 4 or more plates, of which one plate with sprues is a chamber for loading the rubber mixture, the other is a plunger plate, and in the remaining plates there are parts of nests that make up the products, and, if necessary, a plate for removing products with signs. In this case, the plate with the loading chamber and the plate-plunger are made with the possibility of their simultaneous disconnection from the other plates of the mold. On the lower part of the plate with the loading chamber, part of the nests with a larger volume are performed than the part of the nests in the upper plate of the mold Patent No. 2400360 RU. Publ. 09/27/2010).

However, the construction of the known mold does not contain a replaceable block package of a matrix and a punch.

A known mold for injection molding, including a positioner, which during operation provides adjustment of the relative position of the gate element and the nozzle of the device for distributing molten material between the retracted position and the extended position to control the volume containing the molten material of the nozzle reservoir (Patent No. 2450923 KG. Publ. 05/20/2012).

However, the known invention does not have the ability to use a removable block package of forming matrices, a punch.

A known injection molding mold containing a movable and fixed half molds, a sprue sleeve, a pressing chamber, characterized in that in the annular groove of one of the half molds, a replaceable diaphragm from the casting material with a recess in the upper part, melted during pressing, is installed and cavities communicated with the cavity of the casting are made in the movable half-mold to obtain diaphragms for subsequent use (Patent No. 14020 RU. Publ. 27.06.2000).

However, the known invention does not have the ability to use a removable block package of forming matrices, a punch.

A known mold for molding plastic products, including movable and fixed parts, consisting of support plates, mounting plates of forming inserts, pusher plates with pushers and a cooling system of forming inserts, mounting plates are made with recesses into which forming inserts with made through holes for the location of the pushers in them. In addition, the through holes in the plates for the pushers lie on the same axis with the holes in the forming inserts. The mold is equipped with elongated fittings for connection to a cooling system located in removable forming inserts (Patent No. 68388 RU. Publ. 27.11.2007).

However, the design of the known mold does not allow the use of interchangeable forming matrices and a punch to increase the range of products. In addition, it has a high cost of manufacturing a mold.

The objective of the present invention is to reduce the number of stationary molds, the technical result of which is manifested in the simplification of the design, the possibility of using interchangeable block packages, which can increase the range of products and reduce the cost of manufacturing foundry molds.

The problem is solved in that in a typesetting mold containing a stationary unit, base plates, fastening plates, a shank plate, a matrix, a punch and a movable part, the stationary block includes a movable and fixed part made by a removable block forming machine, while moving the part is made of interconnected base plate, fastener plate, shank plate connected to the shank and installed with the possibility of movement along the guide columns, fastening strips, in addition, the fixed part stationary unit is made of fastening plates connected to the sprue plate on which the fixed gibs, set the column associated indirectly with the fastening plate and the sprue plate, each block is completed packet shaping matrix punch ejectors and the ejector plate.

It is advisable to reduce the time of reconfiguration in the manufacture of products of various nomenclatures, install the stationary unit once on a foundry machine, and replace the replaceable block-package of forming units directly on the foundry machine.

The present invention is illustrated by a detailed description and diagrams in which:

FIG. 1 is a sectional view of a stationary unit according to the invention;

FIG. 2 - interchangeable block-package of forming in the context of a set according to the invention;

FIG. 3 is a sectional view of a type-setting mold with a replaceable block package of forming agents, the same as in FIG. 1 and 2.

The type-setting mold (Fig. 3) consists of a stationary block and a replaceable block-package of forming agents. The stationary unit (Fig. 1) has a movable and fixed part.

The fixed part of the stationary unit is made of a fastening plate 1 connected to a sprue plate 2. The sprue plate 2 is equipped with brackets 3 and columns 11.

The movable part of the stationary unit is made of a mounting plate 6 connected to a supporting plate 5. The supporting plate 5 is equipped with mounting plates 4 located on the side of the sprue plate 2. The shank plate 8 is equipped with pressure plates 7 and a shank 9. Guides are placed in the holes of the plate 8 of the shank 9 column 10. Plate 8 is mounted to move along the guide columns 10 between the mounting plate 6 and the supporting plate 5.

The movable and fixed parts of the stationary unit are mounted with the possibility of movement and centering by means of columns 11.

Mounting straps 3 and mounting straps 4 and 7 are made with protrusions. The protrusions of the mounting brackets 3, mounting brackets 4 and mounting brackets 7 are located towards each other. The formed protrusions are intended for installation and fastening of interchangeable sets of block-form-forming packages.

Each interchangeable forming unit package is equipped with interconnected matrix 12, punch 13, ejector plate 14 and ejector 15 mounted on said ejector plate 14 (Fig. 2). The number of ejectors is calculated according to the shape of the casting. On the matrix 12, the punch 13 and the plate of the ejectors 14 made protrusions for mounting in a stationary unit.

All forming in the set or, in other words, interchangeable forming are standardized and unified by the overall and connecting dimensions, fasteners and holes for fasteners (not shown).

The type-setting mold is used as follows.

The layout of the typesetting mold is carried out directly on the casting machine in the following sequence (Fig. 3).

The stationary unit is installed on the foundry machine once, and a replaceable block-package of forming agents is changed directly on the foundry machine. Installing a replacement block package takes place in two stages.

Stage - 1. Loosen the mounting straps 3 of the stationary unit and install in the grooves the protrusions of the forming matrix 12 until it stops. The mounting straps 3 are pressed to the gate 2 plate.

Stage - 2. Loosen the mounting plate 4 and the mounting plate 7 of the movable part of the stationary unit. The protrusions of the punch 13 are installed in the groove between the fastening plate 4 and the base plate 5, and the protrusions of the pusher plate 14 are installed in the groove between the fastening plate 7 and the plate 8 of the shank 9 until they stop. The mounting plate 4 is pressed with the punch 13 to the base plate 5. The mounting plate 7 is pressed to the plate 8 of the shank 9.

The layout completes the closure of the movable and stationary parts of the stationary unit of the typesetting mold along the closure line of the forming matrix 12 and the punch 13.

When the casting machine with the set type mold installed, the moving movable and fixed parts with the block package (opening, closing) occurs along the columns 15. In the closed state, the molding cavity 16 of the casting is filled with the casting material. The casting is removed from the punch 13 of the block package using the ejectors 15 from the movement of the shank 9 and the plate of the ejectors 14 along the guide columns 10.

Castings 16 receive in the forming cavity of the matrix 12 and the punch 13 in the closed state. The casting 16 is pushed out of the punch 13 using the ejector 15 by longitudinally moving the shank 9 with the plate 8 and the ejector plate 14, along the guide columns 10.

The proposed typesetting mold reduces the number of stationary molds having a simple and easy to use design, the use of interchangeable block-forming molds allows you to increase the range of products and reduce the cost of manufacturing casting molds.

In addition, the use of the proposed type-setting mold allows to reduce the time for the equipment to be changed from one casting to another, to reduce the time for designing a mold by choosing standard positions and reducing the amount of design documentation.

The proposed type-setting mold allows to reduce the time of its manufacture by using stocks and reducing the number of special operations, to reduce the cost, improve the quality of casting due to well-established manufacturing techniques for the production of individual parts of replaceable block-forming packages.

Claims (1)

A type-setting mold containing a stationary unit having a movable and fixed part, and a replaceable forming unit package consisting of a matrix, a punch, a plate of ejectors and ejectors, characterized in that the movable part of the stationary unit is made in the form of interconnected base plate with mounting plates, a mounting plate and a shank plate connected to the shank and mounted to move along the guide columns between the aforementioned base plate and the mounting plate, and the fixed part It is made in the form of a fastening plate connected to a gate plate, on which clamping strips are fixed and columns for moving the movable part are installed.

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