RU2554627C1 - Moulding unit of die to produce movable joint - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: moulding unit of die to produce the movable joint comprising alternating ring reinforcement elements and elastomer layers, containing moulding rings connected with the outermost reinforcement elements of the movable joint, and clamps for reinforcement elements. At that the moulding unit is equipped with metal ring inserts installed during the moulding unit assemblage on the external end faces of the outermost reinforcement elements, puller bolts that during disassemblage of the moulding unit are screwed in through thread holes opened in the moulding rings till stop against the metal ring inserts, and L-shape ring installed prior to the removal of the reinforcement element clamps on one of the outermost reinforcement elements of the movable joins after the moulding ring removal from it, and after metal ring insert removal.

EFFECT: excluded possibility of article damage, some large-size movable joints are made with quality.

7 dwg

Description

The invention relates to the field of engineering, in particular to the technology of manufacturing movable joints in a mold, and can be used in the manufacture of reinforced shock absorbers and rubber-metal elements.

Known designs of molds for the manufacture of a movable joint, consisting of alternating between each other annular elements of reinforcement and layers of elastomer (see, for example, patents of the Russian Federation No. 2131998 and 2351472).

These molds include a forming unit containing forming rings fastened to the extreme reinforcement elements of the movable joint and reinforcing element latches.

Using the clamps of the reinforcing elements, between the reinforcing elements in the forming block, gaps are set, which are filled with an elastomer during the manufacturing of the movable joint.

Known mold block mold for the manufacture of a movable joint, consisting of alternating between each other annular elements of reinforcement and layers of elastomer, containing forming rings, fastened to the extreme elements of the reinforcement of the movable connection, and clamps of the elements of the reinforcement (RF patent No. 2302944), the closest analogue.

For movable joints such as reinforced shock absorbers and rubber-metal elements, increased demands are placed on the quality of workmanship, in particular, on the condition of the outer surface, which mainly depends on the manufacturability of the process of disassembling the forming unit to extract the manufactured movable joint from it.

Therefore, disassembling the forming unit after the end of the mold is a critical operation, which largely determines the quality of the manufactured movable joint.

The practical application of the known forming unit showed that when it is disassembled, both when the forming rings are disconnected from the extreme reinforcement elements and during the extraction of the reinforcing element clamps, the possibility of breaking the outer surface of the extreme reinforcement elements of the movable joint is not ruled out.

Abnormalities in the surface, such as scratches, risks, etc. are not permissible for highly responsible movable joints used as reinforced shock absorbers and rubber-metal elements, which must be especially precisely installed in the seats of the products.

With a large number of reinforcing elements in the composition of the movable connection and, accordingly, with a significant number of installed clamps of reinforcing elements, removed during disassembly, the likelihood of violations increases.

In addition, the extraction of the fixtures of the reinforcing elements from the forming block is a laborious and complex operation, since the fixtures of the reinforcing elements are installed (snap) in one of the forming rings of the forming block with a force sufficient to exclude the possibility of their displacement under the action of significant loads to which they are subjected the process of filling the gaps of the movable joint with an elastomer.

Detaching the forming rings from the extreme elements of the reinforcement during disassembly of the forming block is also quite complicated and time-consuming operation, since during the manufacturing of the movable joint, the forming rings and extreme elements of the reinforcement are exposed to significant pressure and temperature, which in some cases can lead to sintering of the contacting surfaces.

Thus, in the known forming block, the possibility of damage to the surfaces of the extreme elements of the reinforcement of the movable joint during disassembly of the mold is not excluded, which reduces the quality of the manufactured movable joint, the process of disassembling the forming block is time-consuming, complex and not sufficiently technological.

The technical task of this invention is the creation of a forming unit, which eliminates the reduction in the quality of the manufactured movable joint by improving the processability of disassembling the forming unit, which also simplifies the process of disassembling the forming unit and reduces its complexity, while ensuring reliable operation of the mold.

The technical result is achieved by the fact that the molding unit of the mold for the manufacture of a movable joint, consisting of alternating between each other annular elements of reinforcement and layers of elastomer, containing forming rings fastened to the extreme elements of the reinforcement of the movable joint, and the clamps of the elements of the reinforcement, equipped with metal ring gaskets, installed during assembly of the forming block on the outer ends of the extreme elements of the reinforcement, squeezing bolts screwed during disassembly of the forming block into the through threaded holes open in the forming rings to the metal ring gaskets as far as they will go, and the L-shaped ring installed before removing the fixtures of the reinforcement elements onto one of the extreme reinforcement elements of the movable joint after removing the forming ring from it and removing the metal ring gasket.

The supply of the forming block with metal ring gaskets installed during the assembly of the forming block on the outer ends of the extreme reinforcement elements eliminates the possibility of damage to the surfaces of the extreme reinforcement elements, both when the forming rings are installed on them and when the forming rings of the forming block are removed from them.

The supply of the forming block with squeezing bolts that are screwed when disassembling the forming block into the through threaded holes open in the forming rings until they stop in the metal ring gaskets makes it easier to separate the forming rings from the extreme elements of the reinforcement while eliminating the possibility of damage to the surfaces of the extreme elements of the reinforcement.

The supply of the forming unit with an L-shaped ring mounted on one of the extreme reinforcement elements of the movable joint, after removing the forming ring from it and removing the metal ring gasket, allows you to use a special tool to extract the fixtures of the reinforcing elements from the forming unit using the surface of the L-shaped ring sections as a support, which significantly reduces the complexity, simplifies and increases the manufacturability of the disassembly process, while ensuring surface protection reinforcement element from the impact of the tool.

The developed set of essential features of the invention allows the best way to disassemble the proposed forming unit after the end of the mold while ensuring the required quality of the movable joint made in it.

Figure 1 shows a diagram of a mold with a forming unit.

Figure 2, 3 shows the design of the assembled forming block.

Figure 4 shows a diagram of the disconnection of the upper forming ring from the extreme reinforcement element of the movable joint.

Figure 5 shows the forming unit after removal during disassembly of the upper forming ring and the metal ring gasket.

Figure 6 shows a top view of the forming unit after removing the upper forming ring and the metal ring gasket.

Figure 7 shows a diagram of the extraction of fixtures of reinforcing elements from a manufactured movable joint.

The mold for the manufacture of a movable joint includes a loading chamber 1, into which an elastomer 2, a punch 3, a sprue system 4 and a ferrule 5 with a forming unit placed therein are placed.

The forming unit comprises an upper forming ring 6 and a lower forming ring 7, between which a movable joint is arranged, consisting of alternating annular reinforcement elements and layers of a pressed elastomer.

The annular reinforcement elements include the extreme elements 8 and the plates 9 installed between them, separated from each other and separated from the extreme elements 8 with the same clearances by means of fixtures 10 of reinforcing elements made in the form of a set of flat sectors evenly spaced around the perimeter of the forming block.

One of the extreme elements of the reinforcement 8 is fastened to the upper forming ring 6 by screws 11, and the second extreme element 8 is fastened to the lower forming ring 7 by screws 12.

The upper forming ring 6 and the lower forming ring 7 are interconnected by bolts 13.

The latches 10 of the reinforcing elements are installed in the grooves formed between the vertically arranged protrusions 14, made on the surface of the lower forming ring 7.

In this case, the sectors of the clamps 10 of the reinforcing elements interact along the inner diameter with the annular plates 9 of the movable connection.

In the clamps 10 of the reinforcing elements, through slots 15 are made for elastomer passage during molding through the sprue channels 16 connected to the sprue system 4, made in the upper forming ring 6, to the gaps between the reinforcement elements 8, 9 of the movable joint.

On the outer ends of the extreme elements 9 of the reinforcement, metal ring gaskets 17 and 18 are installed, respectively fixed with screws 11 and 12, fastening the extreme elements 8 of the reinforcement with the upper forming ring 6 and the lower forming ring 7.

Through-forming rings 6 and 7 open through threaded holes that are plugged during assembly of the forming block by threaded plugs 19 and 20.

Place the assembled forming block in the holder 5 and produce the final assembly of the mold.

In the manufacture of the movable joint, the elastomer 2 is placed in the loading chamber 1, the punch 3 is installed and the elastomer 2 is pressed through the gate system 4, in communication with the gate channels 16, into the gaps 21 between the reinforcing elements of the movable joint.

Dismantling the mold block of the mold after the manufacture of the movable joint is as follows.

Separate the upper forming ring 6 and the lower forming ring 7, removing the bolts 13.

Unscrew the screws 11 by disconnecting the metal ring gasket 17 and the upper forming ring 6 from the support ring 8.

The screw plugs 19 are unscrewed, the squeeze bolts 22 are screwed into the threaded holes until they stop in the metal ring gasket 17, the upper forming ring 6 of the forming block is disconnected from the support ring 8 of the movable joint and the upper forming ring 6 is removed.

The metal ring gasket 17 is removed and the protective ring 23, which is equipped with the mold block, is mounted on the end face of the upper reinforcement element (upper support ring 8) of the movable joint.

The ring 23 is made of an L-shaped section, the inner diameter, the height and width of which correspond to the outer diameter, height and width of the extreme elements of the reinforcement (support rings 8).

Insert the tool 24 into the slot 15 of one of the sectors of the clamps 10 of the reinforcement elements, hook it over the edge of the slot 15 and, using the tool 24 as a lever supported on the ring 23, alternately remove the sectors of the clamps 10 of the reinforcement elements from the grooves of the lower forming ring 7.

After removing all the clamps 10 of the reinforcement elements from the movable joint, remove the ring 23, unscrew the screws 12, disconnecting the metal ring gasket 18 and the lower forming ring 7 from the support ring 8.

The screw plugs 20 are unscrewed, the squeeze bolts 22 are screwed into the screw holes until they stop in the metal ring gasket 18, the lower forming ring 7 of the forming block is disconnected from the support ring 8 of the movable joint and the lower forming ring 6 is removed.

The metal ring gasket 18 is removed and the manufactured movable joint is inspected for compliance with the specifications.

Practical application has confirmed the high adaptability of the process of disassembling the molding block of the mold.

In the mold with the proposed forming unit, when disassembling which eliminates the possibility of damage to the product, a number of large-sized movable joints are qualitatively manufactured at the enterprise.

Claims (1)

The molding unit of the mold for the manufacture of a movable joint, consisting of alternating annular reinforcing elements and layers of elastomer, containing forming rings fastened to the extreme reinforcing elements of the movable joint, and reinforcing element latches, characterized in that it is equipped with metal annular gaskets installed when assembling the forming block on the outer ends of the extreme elements of the reinforcement, squeezing bolts screwed when disassembling the forming block into open in the mold binders rings through the screw holes to lock in the metal annular gasket, and a ring of L-shaped cross section, installed, before removing the clamps reinforcement elements, one of the extreme elements of the movable armature compound after removal from the mold has a ring and removing the metal backing ring.

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