CN201357214Y

CN201357214Y - Air bag fixture for casting sand core of automobile engine air cylinder cover

Info

Publication number: CN201357214Y
Application number: CNU2009201143651U
Authority: CN
Inventors: 郭剑; 陶美娟; 黄海马; 王树明; 陈照达
Original assignee: NINGBO HELI MOULD TECHNOLOGY Co Ltd
Current assignee: NINGBO HELI MOULD TECHNOLOGY Co Ltd
Priority date: 2009-02-23
Filing date: 2009-02-23
Publication date: 2009-12-09
Anticipated expiration: 2019-02-23

Abstract

The utility model provides an air bag fixture for a casting sand core of an automobile engine air cylinder cover, which is used as a tooling fixture for subsequent processing of the casting sand core. The air bag fixture is composed of five modules: a fixture structure module, an air bag clamping module, a sand core jacking-pressing module, a sand core swinging-rotating module and a PLC electric-air circuit control module; wherein the fixture structure module comprises a cross beam, left/right upright posts under the cross beam, and a sand core clamping frame; the lower ends of the left/right upright posts are respectively connected with the sand core clamping frame; the air bag clamping module is arranged in the sand core clamping frame, and the sand core jacking-pressing module is arranged on the sand core clamping frame; the sand core swinging-rotating module comprises a rotating motor and chain transmission pairs, the rotating motor is arranged on the cross beam of the fixture structure module, the chain transmission pairs are respectively arranged on the cross beam and the sand core clamping frame, and the PLC electric-air circuit control module is connected with each electric circuit and each air circuit. The air bag fixture solves the problems of the casing of upper/lower cover cores of an automobile engine air cylinder and the entire dip-coating of the sand core after the sand core is assembled, improves the product precision, can realize automatic mass production, and increases the production efficiency.

Description

The air bag anchor clamps of cylinder cover of automobile engine casting sand core

Technical field

The utility model relates to the casting and molding technical field, especially relates to a kind of air bag anchor clamps of casting sand core.

Background technology

Cylinder head is one of important spare part in the automobile engine, and ferrous metal cylinder head Foundry Production generally adopts machine molding, coremaking; Core size and surface accuracy require high, the subsequent treatment of core such as dip-coating, and core assembly needs the high-efficiency reliable clamp fixture and guarantees; Be to adopt many cover mechanical clamps at present, finish the post processing of core by many people; Because the casting sand core volume of cylinder cover of automobile engine is big, Heavy Weight, to last, following cover core and core carry out difficulty of manual dip-coating, can occur the uneven phenomenon of core coating after the dip-coating in present anchor clamps mode; In case and the coating turned letter, just have sagging, influence core dimensional accuracy and core core assembly precision, increase the core finishing time, operating efficiency is reduced, also be difficult to realize producing in batches.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiency of above-mentioned prior art, a kind of air bag anchor clamps of cylinder cover of automobile engine casting sand core are provided, with upper and lower cover core and the whole dip-coating problem of the core behind the core core assembly that solves the casting of automobile cylinder, improve the product precision, realize batch automatic production, enhance productivity.

For achieving the above object, the technical solution of the utility model is such: a kind of air bag anchor clamps of cylinder cover of automobile engine casting sand core, by the clamp structure module, the air bag clamp module, core roof pressure module, core swing rotary module, five modules of PLC circuit gas circuit control module are formed: wherein the clamp structure module comprises crossbeam, left column under the crossbeam, right column, and the core clamping frames that connects respectively of left and right pillar lower end; The air bag clamp module comprises rotating shaft gas circuit assembly, air bag clamping unit, gas circuit control module; Said rotating shaft gas circuit assembly by the swivel joint of the gas circuit rotating shaft that fixes with the core clamping frames, rotating shaft termination, and the threeway that connects with rotating shaft constitute, its shaft, swivel joint, threeway all have the gas circuit connection and are connected with cylinder; Said air bag clamping unit by contact with core connect and be fixed in sliding clamp on the core clamping frames, and sliding clamp and core clamping frames between air bag and be installed in the core clamping frames and the back-moving spring that withstands air bag is formed; Said gas circuit control module connects cylinder, and it is the part in the PLC circuit gas circuit control module; Core roof pressure module comprises minitype cylinder and gas circuit integrated package; Said minitype cylinder has a plurality of, and each minitype cylinder is all contacted with gas circuit, adopts the method that contacts with the core multiple spot to disperse being stressed of core; Said gas circuit integrated package connects each minitype cylinder, and it is the part in the PLC circuit gas circuit control module; Core swing rotary module comprises electric rotating machine and chain transmission; Said motor is installed on the crossbeam of clamp structure module, and connects with PLC circuit gas circuit control module; Sprocket wheel in the chain transmission is installed in respectively on crossbeam and the core clamping frames, connects chain between sprocket wheel; Electric rotating machine drives core clamping frames and core swing by chain sprocket, by the just commentaries on classics counter-rotating of motor, remains in the coating of the dark recess of die cavity with turned letter; PLC circuit gas circuit control module comprises each gas circuit control module, gas circuit integrated package and circuit control system, and action below main the realization: 1. air bag and minitype cylinder intake and exhaust are controlled automatically; 2. control motor and just changeing inverted wobbles turned letter core coating; 3. electronic switch is controlled the adjustment chucking position in real time; 4. anti-misoperation, when air bag and minitype cylinder clamp not in placely, anchor clamps do not carry out next-step operation, prevent the core damage that comes off.

Owing to adopted technique scheme, the air bag anchor clamps of a kind of cylinder cover of automobile engine casting sand core of the present utility model, the upper and lower cover core and the whole dip-coating problem of the core behind the core core assembly of casting of automobile cylinder have been solved, improved the product precision, can realize batch automatic production, enhance productivity.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

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

Fig. 2 is a place rotating shaft gas circuit assembly broken section enlarged diagram of Fig. 1.

Fig. 3 is the local enlarged diagram of the b place air bag clamping unit of Fig. 1.

Fig. 4 is the c place core roof pressure module partial enlarged drawing of Fig. 1.

Among the figure: 1, crossbeam, 2, left column, 3, right column, 4, core clamping frames, 5, rotating shaft gas circuit assembly, 501, rotating shaft, 502, swivel joint, 503, threeway, 6, the air bag clamping unit, 601, sliding clamp, 602, air bag, 603, back-moving spring, 7, minitype cylinder, 8, the gas circuit integrated package, 9, core, 10, motor, 11, the chain transmission.

The specific embodiment

Shown in Fig. 1-4, the air bag anchor clamps of a kind of cylinder cover of automobile engine casting sand core of the present utility model, by the clamp structure module, the air bag clamp module, core roof pressure module, core swing rotary module, five modules of PLC circuit gas circuit control module are formed: wherein the clamp structure module comprises crossbeam 1, left column 2 under the crossbeam, right column 3, and the core clamping frames 4 that connects respectively of left and right pillar lower end; The air bag clamp module is located in the core clamping frames, comprises rotating shaft gas circuit assembly 5, air bag clamping unit 6, gas circuit control module; Said rotating shaft gas circuit assembly 5 by the swivel joint 502 of the rotating shaft 501 of the single gas circuit that fixes with core clamping frames 4, rotating shaft termination, and the threeway 503 that connects with rotating shaft constitute, its shaft, swivel joint, threeway all have the gas circuit connection and are connected with cylinder; Said air bag clamping unit 6 by contact with core connect and be fixed in sliding clamp 601 on the core clamping frames, and sliding clamp and core clamping frames between air bag 602 and be installed in the core clamping frames and the back-moving spring 603 that withstands air bag is formed; Said gas circuit control module connects cylinder, and it is the part in the PLC circuit gas circuit control module; Core roof pressure module is located on the core clamping frames, comprises minitype cylinder 7 and gas circuit integrated package 8; Said minitype cylinder 7 has a plurality of, and each minitype cylinder is all contacted with gas circuit, adopts the method that contacts with core 9 multiple spots to disperse being stressed of core; Said gas circuit integrated package 8 connects each minitype cylinder 7, and it is the part in the PLC circuit gas circuit control module; Core swing rotary module comprises electric rotating machine 10 and chain transmission 11; Said motor 10 is installed on the crossbeam 1 of clamp structure module, and connects with PLC circuit gas circuit control module; Sprocket wheel in the chain transmission 11 is installed in respectively on crossbeam and the core clamping frames, connects chain between sprocket wheel; Electric rotating machine 10 drives core clamping frames and core swing by chain sprocket, by the just commentaries on classics counter-rotating of motor, remains in the coating of the dark recess of die cavity with turned letter; PLC circuit gas circuit control module connects each electric road, comprises each gas circuit control module, gas circuit integrated package 8 and circuit control system, main realizes following action: 1. air bag, and the minitype cylinder intake and exhaust are controlled automatically; 2. control motor and just changeing inverted wobbles turned letter core coating; 3. electronic switch is controlled the adjustment chucking position in real time; 4. anti-misoperation, when air bag and minitype cylinder clamp not in placely, anchor clamps do not carry out next-step operation, prevent the core damage that comes off;

In order to reduce the anchor clamps volume, be beneficial to operation, change the rotating shaft 501 of single gas circuit the rotating shaft of two gas circuits into, use two gas circuits to be connected with cylinder, independent gas circuit loop is adopted in intake and exhaust.

Claims

1, a kind of air bag anchor clamps of cylinder cover of automobile engine casting sand core, it is characterized in that: by the clamp structure module, the air bag clamp module, core roof pressure module, core swing rotary module, five modules of PLC circuit gas circuit control module are formed: wherein the clamp structure module comprises crossbeam (1), the left column under the crossbeam (2), right column (3), and the core clamping frames (4) that connects respectively of left and right pillar lower end; The air bag clamp module is located in the core clamping frames (4); Core roof pressure module is located on the core clamping frames (4); Core swing rotary module comprises electric rotating machine (10) and chain transmission (11); Said motor (10) is installed on the crossbeam (1) of clamp structure module, and connects with PLC circuit gas circuit control module; Sprocket wheel in the chain transmission (11) is installed in respectively on crossbeam (1) and the core clamping frames (4), connects chain between sprocket wheel; PLC circuit gas circuit control module connects each circuit and gas circuit.

2, according to the air bag anchor clamps of the said a kind of cylinder cover of automobile engine casting sand core of claim 1, it is characterized in that: said air bag clamp module comprises rotating shaft gas circuit assembly (5), air bag clamping unit (6), gas circuit control module; Said rotating shaft gas circuit assembly (5) is by the swivel joint (502) of the gas circuit rotating shaft (501) that fixes with core clamping frames (4), rotating shaft termination, and threeway (503) formation that connects with rotating shaft, and its shaft, swivel joint, threeway all have the gas circuit connection and be connected with cylinder; Said air bag clamping unit (6) by contact with core connect and be fixed in sliding clamp (601) on the core clamping frames (4), and sliding clamp and core clamping frames between air bag (602) and be installed on the interior and back-moving spring (603) that withstand air bag (602) of core clamping frames (4) and form; Said gas circuit control module connects cylinder, and it is the part in the PLC circuit gas circuit control module.

3, according to the air bag anchor clamps of the said a kind of cylinder cover of automobile engine casting sand core of claim 2, it is characterized in that: said gas circuit rotating shaft (501) is a kind of rotating shaft of single gas circuit; Said rotating shaft, swivel joint, threeway are connected with cylinder with single gas circuit.

4, according to the air bag anchor clamps of the said a kind of cylinder cover of automobile engine casting sand core of claim 2, it is characterized in that: said gas circuit rotating shaft (501) is the rotating shaft of a kind of pair of gas circuit; Said rotating shaft, swivel joint, threeway are connected with cylinder with two gas circuits.

5, according to the air bag anchor clamps of the said a kind of cylinder cover of automobile engine casting sand core of claim 1, it is characterized in that: said core roof pressure module comprises minitype cylinder (7) and gas circuit integrated package (8); Said minitype cylinder (7) has a plurality of, and each minitype cylinder is all contacted with gas circuit, and each minitype cylinder bar contacts with core (9); Said gas circuit integrated package (8) connects each minitype cylinder (7), and gas circuit integrated package (8) is the part in the PLC circuit gas circuit control module.