CN102729419A

CN102729419A - Air ejection device for bellows

Info

Publication number: CN102729419A
Application number: CN2011100854431A
Authority: CN
Inventors: 吴晓龙
Original assignee: JIANGYIN CITY AGRICULTURE CHEMICAL EQUIPMENT FACTORY
Current assignee: JIANGYIN CITY AGRICULTURE CHEMICAL EQUIPMENT FACTORY
Priority date: 2011-04-07
Filing date: 2011-04-07
Publication date: 2012-10-17
Anticipated expiration: 2031-04-07
Also published as: CN102729419B

Abstract

The invention relates to an air ejection device for a bellows. The air ejection device comprises a fixed mold (1) and a core rod (3) inserted into the fixed mold (1). The top of the fixed mold (1) is provided with a counter-bored hole (1.1). The bottom of the fixed mold (1) is provided with an air cavity (1.2). The middle of the fixed mold (1) is provided with an air passage (1.3) for communicating the counter-bored hole (1.1) and the air cavity (1.2). The bottom of the air cavity (1.2) is provided with an air inlet hole (1.4). An injection molded bellows (5) is coated on a movable mold (2). The injection molded bellows (5) has a barrel structure of which the top is inclosed. The air ejection device for a bellows can realize safe and reliable air ejection of an injection molded bellows.

Description

Bellows Pneumatic demould device

Technical field

The present invention relates to a kind of stripper apparatus, especially relate to a kind of device that is used for the bellows of injection mo(u)lding is carried out Pneumatic demould.

Background technology

At industrial circle, bellows has widely to be used, and often needs to use bellows as the hermetically sealed case of rich property shaft coupling, rich property shaft coupling itself and collapsible container etc.Blowing or injection moulding process are adopted in the manufacturing of bellows usually, the bellows that the blow moulding manufacturing forms, and its cost density is poor, easily because of wearing and tearing damage, has influenced its service life in use greatly.The bellows that the injection moulding manufacturing forms is high because of its product density; Have higher service life and obtain user's extensive approval, but injection moulding is made the problem that there is demoulding difficulty in the bellows of moulding, the conventional injection moulding demoulding is general to be adopted manually or utilizes the mould core bar that bellows is released; In knockout course, all cause bellows and mould damage because of friction easily; Not only influence the quality of product, and aggravated the wearing and tearing of mould, influenced the service life of mould.

Summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, a kind of bellows Pneumatic demould device that can carry out safe and reliable Pneumatic demould to the bellows of injection mo(u)lding is provided.

The objective of the invention is to realize like this: a kind of bellows Pneumatic demould device, said stripper apparatus include cover half and are embedded at the core bar in the cover half, and said cover half top offers a counterbore; The bottom is provided with an air cavity, and the centre is provided with an air flue counterbore is connected with air cavity, and said air cavity bottom is provided with an air admission hole; Said core bar includes the connecting rod that is inserted in air flue; Said connecting rod top is with a plug, and the bottom is connected with a stop bit spare, and said plug and stop bit spare place respectively in counterbore and the air cavity; Have the bellows after the injection mo(u)lding to be coated on the dynamic model, and said bellows is the barrel-like structure of a top closure.

A kind of bellows Pneumatic demould of the present invention device, said plug and counterbore size are complementary, and are provided with one between said plug and the connecting rod and regulate pin.

A kind of bellows Pneumatic demould of the present invention device, said stop bit spare is strip or disk-like structure, and when stop bit spare was list structure, the diameter of said stop bit spare was less than the diameter of air flue, and when stop bit spare was disk-like structure, said air cavity top radially had some grooves.

Compared with prior art, the invention has the beneficial effects as follows:

Pneumatic demould device of the present invention is owing to charged into gases at high pressure between mould and bellows; Thereby mould can directly not contact with bellows, avoided damage between the two, not only improved the quality of product; And the wearing and tearing of mould, the service life of the mould of prolongation have been reduced.

Description of drawings

Fig. 1 is the cutaway view of bellows injection moulding of the present invention during with moulds open.

Fig. 2 is the cutaway view of bellows injection moulding of the present invention during with mould closes.

Fig. 3 is the cutaway view of the bellows after the injection mo(u)lding of the present invention.

Fig. 4 is the cutaway view of cover half of the present invention.

Fig. 5 gets rid of the cutaway view behind the core bar for cover half of the present invention.

Fig. 6 is the cutaway view of core bar of the present invention.

The cutaway view of Fig. 7 during for the bellows demoulding of the present invention.

Fig. 8 is the state cutaway view of the bellows demoulding of the present invention when initial.

State cutaway view when Fig. 9 accomplishes for the bellows demoulding of the present invention.

Wherein:

Cover half 1, dynamic model 2, core bar 3, die cavity 4, bellows 5, air inlet pipe 6;

Counterbore 1.1, air cavity 1.2, air flue 1.3, air admission hole 1.4;

Connecting rod 3.1, plug 3.2, stop bit spare 3.3, adjusting pin 3.4.

The specific embodiment

Referring to Fig. 1 ~ 9, a kind of bellows Pneumatic demould device that the present invention relates to, said stripper apparatus include cover half 1 and are embedded at the core bar 3 in the cover half 1; Said cover half 1 top offers a counterbore 1.1, and the bottom is provided with an air cavity 1.2, and the centre is provided with an air flue 1.3 counterbore 1.1 is connected with air cavity 1.2; Said air cavity 1.2 bottoms are provided with an air admission hole 1.4 (as shown in Figure 5), and said core bar 3 includes the connecting rod 3.1 that is inserted in air flue 1.3, and the diameter of said connecting rod 3.1 is less than the diameter of air flue 1.3; Said connecting rod 3.1 tops are with a plug 3.2, and the bottom is connected with a stop bit spare 3.3, form the structural member (as shown in Figure 6) of a cross section for " worker " font; Said plug 3.2 and stop bit spare 3.3 place respectively in counterbore 1.1 and the air cavity 1.2 (as shown in Figure 4), and said plug 3.2 is complementary with counterbore 1.1 sizes, are provided with one between said plug 3.2 and the connecting rod 3.1 and regulate and pin 3.4; Be used to regulate the height of plug 3.2; Said stop bit spare 3.3 can be strip or disk-like structure, and when stop bit spare 3.3 was list structure, the diameter of said stop bit spare 3.3 was less than the diameter of air flue 1.3; When stop bit spare 3.3 is disk-like structure; Said air cavity 1.2 tops radially have some grooves, make that gas still can arrive in the conducting entering air flue 1.3 when stop bit spare 3.3 contacts with air cavity 1.2

Have the bellows 5 after the injection mo(u)lding to be coated on the dynamic model 2, and said bellows 5 is the barrel-like structure (as shown in Figure 3) of a top closure.

Operation principle of the present invention is:

One, injection mo(u)lding: constitute mould by cover half 1 and the dynamic model 2 that is Harvard's formula syndeton, dynamic model 2 closed backs constitute one with cover half 1 and are used for the die cavity 4 of injection moulding, thereby inject raw material, process bellows 5; Those skilled in the art also can select for use dynamic model 2 structures of other Rational structure to carry out injection operation according to cover half 1.

Two, the demoulding: after bellows 5 injection mo(u)ldings, air inlet pipe 6 is linked to each other with air admission hole 1.4, subsequently; Feed gases at high pressure through air inlet pipe 6,, make gas get between bellowss 5 and the cover half 1 through air flue 1.3 with core bar 3 jack-up (as shown in Figure 8) upwards; The gases at high pressure that continue to feed are peeled off the outer surface (as shown in Figure 9) of cover half 1 with the inner surface of bellows 5, thereby have realized stripping operation, at this moment; Close gases at high pressure, can easily bellows 5 be taken off from cover half 1.

Three, following process: bellows 5 top seal end-grain cutting are sliced off the finished product bellows that can obtain required both ends open.

Claims

1. bellows Pneumatic demould device; It is characterized in that: said stripper apparatus includes cover half (1) and is embedded at the core bar (3) in the cover half (1); Said cover half (1) top offers a counterbore (1.1); The bottom is provided with an air cavity (1.2), and the centre is provided with an air flue (1.3) counterbore (1.1) is connected with air cavity (1.2), and said air cavity (1.2) bottom is provided with an air admission hole (1.4); Said core bar (3) includes the connecting rod (3.1) that is inserted in air flue (1.3); Said connecting rod (3.1) top is with a plug (3.2), and the bottom is connected with a stop bit spare (3.3), and said plug (3.2) and stop bit spare (3.3) place respectively in counterbore (1.1) and the air cavity (1.2); Have the bellows (5) after the injection mo(u)lding to be coated on the dynamic model (2), and said bellows (5) is the barrel-like structure of a top closure.

2. a kind of according to claim 1 bellows Pneumatic demould device is characterized in that: said plug (3.2) is complementary with counterbore (1.1) size, is provided with one between said plug (3.2) and the connecting rod (3.1) and regulates pin (3.4).

3. a kind of according to claim 1 or claim 2 bellows Pneumatic demould device; It is characterized in that: said stop bit spare (3.3) is strip or disk-like structure; When stop bit spare (3.3) is list structure; The diameter of said stop bit spare (3.3) is less than the diameter of air flue (1.3), and when stop bit spare (3.3) was disk-like structure, said air cavity (1.2) top radially had some grooves.