CN203124644U

CN203124644U - Core making device with barb type annular core

Info

Publication number: CN203124644U
Application number: CN 201320141511
Authority: CN
Inventors: 马颖; 马宗迎; 商聪
Original assignee: SHANDONG HONGMA ENGINEERING MACHINERY Co Ltd
Current assignee: SHANDONG HONGMA ENGINEERING MACHINERY Co Ltd
Priority date: 2013-03-26
Filing date: 2013-03-26
Publication date: 2013-08-14
Anticipated expiration: 2023-03-26

Abstract

The utility model belongs to the field of casting molds and specifically relates to a core making device with a barb type annular core. The core making device comprises an upper fixed plate, a core assembly outer ring, a core assembly inner ring and an ejector core rod, wherein the core assembly inner ring is positioned in the core assembly outer ring, a cavity formed between the core assembly outer ring and the core assembly inner ring is a core mold cavity, the top of the ejector core rod penetrates through the core assembly outer ring and is positioned on the same horizontal plane with the bottom of the core mold cavity, a sand jetting port communicated with the core mold cavity is formed on the upper fixed plate, a conical positioning sleeve is fixed at the bottom of the upper fixed plate, a boss is arranged at the bottom of the conical positioning sleeve, the outer edge of the boss is clamped with the inner edge of the core assembly inner ring, and the core assembly inner ring is formed by splicing at least two inner core pulling sliding blocks. The device has the advantages of reasonable structure and high core making speed, is suitable for a static pressure casting assembly line, a vibration compaction molding machine, a vibration compaction molding assembly line or a horizontal removable flask molding line, and can realize high-quality, high-efficiency and large-batch production of brake drums with anti-cracking annular reinforcing ribs.

Description

The coremaking device that has the barb type toroidal core

Technical field

The utility model relates to a kind of coremaking device that has the barb type toroidal core, belongs to the casting mould field.

Background technology

(cross sectional shape of reinforcement is waveform to have anti-cracking ring stiffener, rectangle, triangle etc.) brake drum (monometallic casting) is a kind of novel brake drum that uses on the automobile, it is the heavy load vehicle vitals, the waveform of ring stiffener on the present brake drum, rectangle, the isostructural mode of production of triangle is to realize with machining, namely make behind the foundry goods reinforcement that machine tooling again becomes required form earlier, but mechanical property and the machining accuracy that can weaken entire product in the mode at machining reinforcement position are low, reduced the service life of brake drum, in order to address this problem, the form that some adopts barb type cold core to match with the molding box of horizontal parting up and down, to realize the one-body molded of brake drum, but this barb type cold core is difficult for the demoulding in the coremaking process, therefore coremaking speed is slow, efficient is low, can't cast streamline with static pressure, the vibrations squeeze moulding machine, vibrations squeeze mo(u)lding streamline or horizontal removable flask moulding line coupling can not realize high-quality, high efficiency, produce in enormous quantities.

The utility model content

According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of demoulding rational in infrastructure, simple to operate, easy and coremaking efficient the high coremaking device that has the barb type toroidal core.

The coremaking device that has the barb type toroidal core described in the utility model, comprise upper mounted plate, core closes the outer ring, core closes inner ring and plunger tip bar, core closes inner ring and is positioned at core and closes the outer ring, core closes outer ring and core, and to close the cavity that forms between the inner ring be the fuse die cavity, the top of plunger tip bar is passed core and is closed the outer ring and be positioned on the same horizontal plane with the bottom of fuse die cavity, the Sha Kou that penetrates that communicates with the fuse die cavity is set on the upper mounted plate, the bottom of upper mounted plate is the taper positioning sleeve fixedly, taper positioning sleeve bottom has boss, the inner edge that the outer rim of boss and core close inner ring fastens, and core closes inner ring and is put together by at least two inner core pulling slide blocks.

Described plunger tip bar is fixed on plunger tip plate top, and the below of plunger tip plate arranges unit head, provides power by unit head for plunger tip plate, plunger tip bar, in order to the toroidal core of moulding is ejected.

Described core closes inner ring and is put together by four inner core pulling slide blocks.

During making, toroidal core is fully mixed in proportion with material, inject the fuse die cavity from penetrating Sha Kou, then by unit head to plunger tip plate applied thrust, the moving plunger tip bar of plunger tip strip moves up, and by the plunger tip bar toroidal core is ejected, the inner core pulling slide block comes off automatically in the process of ejecting, and manually takes out toroidal core and gets final product.After cold core is made, unit head is returned to initial position, make the top of plunger tip bar and the bottom of fuse die cavity be positioned at same plane, carry out the making of next cold core.

The beneficial effect that the utility model compared with prior art has is:

This coremaking apparatus structure is reasonable, can easily toroidal core be ejected by the plunger tip bar, because core closes inner ring design mix body structure, in the plunger tip process, the inner core pulling slide block can come off automatically, and slide block resetting speed soon, not yielding, positioning accuracy is high, therefore, coremaking speed is fast, be applicable to static pressure casting streamline, vibrations squeeze moulding machine, vibrations squeeze mo(u)lding streamline or horizontal removable flask moulding line, realize having high-quality, high efficiency, the production in enormous quantities of the brake drum of preventing the cracking ring stiffener.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation that Fig. 1 SMIS closes inner ring.

Among the figure: 1, upper mounted plate; 2, taper positioning sleeve; 3, boss; 4, penetrate Sha Kou; 5, core closes inner ring; 6, fuse die cavity; 7, core closes the outer ring; 8, plunger tip bar; 9, plunger tip plate; 10, unit head; 11, inner core pulling slide block.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described further:

As shown in Figure 1, originally the coremaking device that has the barb type toroidal core comprises upper mounted plate 1, core closes outer ring 7, core closes inner ring 5 and plunger tip bar 8, core closes inner ring 5 and is positioned at core and closes outer ring 7, core closes outer ring 7 and core, and to close the cavity that forms between the inner ring 5 be fuse die cavity 6, arrange on the upper mounted plate 1 communicate with fuse die cavity 6 penetrate sand mouth 4, the bottom of upper mounted plate 1 is taper positioning sleeve 2 fixedly, taper positioning sleeve 2 bottoms have boss 3, the inner edge that the outer rim of boss 3 and core close inner ring 5 fastens, core closes inner ring 5 by adopting four inner core pulling slide blocks 11 at least two inner core pulling slide block 11(present embodiments, be put together as shown in Figure 2), the top of plunger tip bar 8 is passed core and is closed outer ring 7 and be positioned on the same horizontal plane with the bottom of fuse die cavity 6, plunger tip bar 8 is fixed on plunger tip plate 9 tops, and the below of plunger tip plate 9 arranges unit head 10.In the utility model, the outer rim that core closes inner ring 5 can be designed to waveform, rectangle, circle, semicircle, triangle or other shapes according to the cross sectional shape of reinforcement.

Described toroidal core can be the fuse of triethylamine cold core, self-hardening sand fuse or other materials, and existing is that example is done following explanation to the using method of this coremaking device with the triethylamine cold core:

During making, the triethylamine cold core is fully mixed with resin, quartz sand, inject the fuse die cavity 6 from penetrating sand mouth 4, and feed the triethylamine gases and make it to solidify from penetrating sand mouth 4, then by 10 pairs of plunger tip plate 9 applied thrusts of unit head, plunger tip plate 9 drives plunger tip bars 8 and moves up, and by plunger tip bar 8 the triethylamine cold core is ejected, because core closes inner ring 5 for dividing body structure, inner core pulling slide block 11 comes off automatically in the plunger tip process, manually takes out the triethylamine cold core and gets final product.After cold core is made, unit head 10 is returned to initial position, make the top of plunger tip bar 8 and the bottom of fuse die cavity 6 be positioned at same plane, carry out the making of next cold core.

This apparatus structure is ingenious, coremaking speed is fast, production efficiency is high, the fast changeable template, can realize flexible production, the triethylamine cold core dimensional accuracy that makes by this device is good, and coremaking speed was up to 30 seconds/part), therefore, can be complementary with high efficiency static pressure casting of modern times streamline, vibrations squeeze moulding machine, vibrations squeeze mo(u)lding streamline or horizontal removable flask moulding line, realize having high-quality, high efficiency, the production in enormous quantities of the brake drum of preventing the cracking ring stiffener.

Claims

1. coremaking device that has the barb type toroidal core, it is characterized in that: comprise upper mounted plate (1), core closes outer ring (7), core closes inner ring (5) and plunger tip bar (8), core closes inner ring (5) and is positioned at core and closes outer ring (7), core closes outer ring (7) and core, and to close the cavity that forms between the inner ring (5) be fuse die cavity (6), the top of plunger tip bar (8) is passed core and is closed outer ring (7) and be positioned on the same horizontal plane with the bottom of fuse die cavity (6), upper mounted plate (1) go up to arrange communicate with fuse die cavity (6) penetrate Sha Kou (4), the bottom of upper mounted plate (1) is taper positioning sleeve (2) fixedly, taper positioning sleeve (2) bottom has boss (3), the inner edge that the outer rim of boss (3) and core close inner ring (5) fastens, and core closes inner ring (5) and is put together by at least two inner core pulling slide blocks (11).

2. the coremaking device that has the barb type toroidal core according to claim 1, it is characterized in that: described plunger tip bar (8) is fixed on plunger tip plate (9) top, and the below of plunger tip plate (9) arranges unit head (10).

3. the coremaking device that has the barb type toroidal core according to claim 1 and 2, it is characterized in that: described core closes inner ring (5) and is put together by four inner core pulling slide blocks (11).