CN2421141Y

CN2421141Y - Inflatable balance mould

Info

Publication number: CN2421141Y
Application number: CN 00234332
Authority: CN
Inventors: 施琼英
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-12
Filing date: 2000-05-12
Publication date: 2001-02-28
Anticipated expiration: 2010-05-12

Abstract

The utility model relates to an inflatable balance mould plate, which comprises a guide post (1) of a bottle blowing machine, a template (2), and a mould (4) linked with the template. The utility model is characterized in that a mould plate (3) is arranged between the template (2) and the mould (4); the mould plate is fixedly connected with the mould, is elastically connected with the template, and is in sliding fit connected with a guide column; a ring-shaped seal (7) is arranged between the junction plane of the mould plate and the template, and forms a balance chamber (8); an inflating hole (9) is introduced into the balance chamber. At the time of blowing and molding, the balance chamber is inflated simultaneously so as to form mould dividing force generated by the compressed air of the balance chamber. The possibility of generating gap between the moulds can be eliminated, and the quality of products can be ensured.

Description

The Inflatable balance template

The utility model relates to processing of plastic, particularly the blow moulding equipment of hollow container.

Hollow plastic container is (as Coke bottle; mineral water bottle; the plastics oil bottle) the stretch blow methods that adopt are produced more; adopting clamping that mould is closed on production equipment disturbs and with Stretch and Blow Mechanism bottle base is stretched and blow molding; there are the following problems in process of production and influence Products Quality for existing equipment; the one, when blow molding; inject the die cavity that the compressed-air actuated pressure of die cavity acts on the cope and drag pattern tool of branch; though mould can not separated by the clamping mechanism locking; but influence owing to existing gap between other parts and rigidity and strain; the formed power perpendicular to die joint of air pressure that acts in the die cavity can make the mould die joint separately; can not fit tightly the face gap and become big; particularly when goods are big; the distraction force that acts on die joint that blowing pressure forms can be bigger; the gap is bigger; influence quality of item; another existing problems are that mould is fixed on the template; template is being slided on the guide pillar or is being swung on jointed shaft; mould has certain thickness and weight; and be connected with template with a side; this forms a cantilever beam on template; influence the vertical of land area and influence its accurate combination; and influence guide pillar or jointed shaft cooperates with the normal of mating holes; make guide pillar or hole produce eccentric wear, disturb and the mould die joint can not correctly be closed.

The purpose of this utility model provides a kind of Inflatable balance template that compensates mold clamping force and mould can be combined closely at die joint.

The novel purpose of this reality realizes by following technical scheme, this Inflatable balance template has guide pillar, template on guide pillar, be connected in the mould of template, it is characterized in that between template and mould, also having Die and mould plate, said Die and mould plate and mould are connected, be connected for the elasticity of pushing down by spring with template and with the guide pillar sliding connection, the seal of annular and the counter balance pocket that is formed by the sealing of sealing part are arranged between the faying face of Die and mould plate and template, the air-filled pore that communicates with counter balance pocket is arranged on template or the Die and mould plate.

When matched moulds blowing, compressed air enters counter balance pocket simultaneously, therefore produce the branch mould equilibrium of forces power that a balance die cavity gas injection pressure produces, and make die joint can not produce the gap, also on guide pillar, slide owing to Die and mould plate simultaneously, the cantilever of template is reduced, and mould can not produce inclination, has improved the quality of product.

Below in conjunction with drawings and Examples Inflatable balance template of the present utility model is done detailed description.

Fig. 1 is the structural representation of the utility model Inflatable balance template;

Fig. 2 be the utility model Inflatable balance template along A-A face among Fig. 1 cutaway view Amplified image, the structure that Die and mould plate is connected with template elasticity is shown;

Structural representation when Fig. 3 is seal 7 free states of the utility model Inflatable balance template.

As Fig. 1; 2; 3; this Inflatable balance template has the matched moulds guide pillar 1 that draws bottle blowing machine; template 2 on guide pillar 1; template 2 be about two; the left and right sides mould 4 that two symmetries are arranged on the opposite planar of two templates; template 2 can be two relative motions simultaneously; also one fix a motion and matched moulds; mould 4 has die joint 6; die cavity 5 is arranged on the die joint; the folding of template 2 and mould 4 by the control of clamping mechanism (not shown); behind the matched moulds by the Stretch and Blow Mechanism (not shown) in die cavity to parison stretching and gas injection and make container formation; between template 2 and mould 4, also has Die and mould plate 3; Die and mould plate 3 is connected with mould 4; be connected for pushing down the elasticity that to separate slightly with template 2 by spring 14; and with guide pillar 1 between have mating holes to become to be slidingly matched and can on guide pillar, slide simultaneously with template 2; the seal 7 that between the faying face of Die and mould plate 3 and template 2, also has annular; it can be the rubber seal ring (O shape ring) of the annular of circular section; the rubber seal ring in splayed cross section preferably; on the faying face of template 2 and Die and mould plate 3, make annular seal groove; seal 7 is put into groove; sealing part 7 forms an airtight counter balance pocket 8 between the faying face between template 2 and the Die and mould plate 3; the area of counter balance pocket is more preferably greater than the projected area of die cavity 5 on die joint; passage 9 in the counter balance pocket of passing to is arranged on template 2 or Die and mould plate 3; the other end of passage links to each other with compressed air line with joint 10; it can communicate with the blowing gas circuit; when when the blowing bottle base, in mould, inflating also to the balance interacvity air-filling, also can make it when the blowing bottle base simultaneously by the gas circuit that gas circuit is controlled passage 9 separately to the balance interacvity air-filling or before blowing bottle base behind the matched moulds to the balance interacvity air-filling.

The section configuration of said annular seal groove, when using O shape ring, be square or rectangular cross section, and when using the sealing ring in splayed cross section, the section of its seal groove is the arc-shaped slot of symmetrical faying face, sealing ring 7 is put into groove and is made splay lower end shrink some and outside elastic force is arranged and obtain initial sealing force, and accompanying drawing 3 has provided the situation of splayed cross section sealing ring under free state, and its lower ending opening place is the mouth that magnifies.

The structure that said Die and mould plate 3 is connected with the elasticity of template 2 can be as shown in Figure 2 structure, have screw 12 on the template 2, the corresponding position has the boss hole 13 that has boss on the Die and mould plate 3, screw 11 passes boss hole 13 and is threaded with screw 12, periphery at boss hole inner bolt 11 has spring 14, spring 14 is by 15 compressions of the turret head of screw 11 or pad and the other end suppresses on the boss of boss hole 13, thereby make Die and mould plate 3 flexible being pressed against on the template 2, when separating force is arranged between two plates as injecting compressed air in counter balance pocket, then can be gapped between two plates, promptly become elasticity and connect.

When matched moulds; clamping mechanism drives template 2 and Die and mould plate 3 slides and matched moulds on guide pillar 1; and with leverage make it the locking and can not open; owing to have Die and mould plate; template and the Die and mould plate sliding surface length on guide pillar is strengthened; reduced the jib-length of mould 4 simultaneously; therefore the wearing and tearing of the mating holes on guide pillar 1 and template and the Die and mould plate have been reduced; reduce the tendency that the mould of knowing clearly tilts simultaneously; when blowing; simultaneously to the balance interacvity air-filling; therefore the counter balance pocket area is a bit larger tham the projected area of die cavity on die joint, form the compressed-air actuated minute mould power that a bigger power is come the balance die cavity, has eliminated the influence of strain etc.; make mould can be on die joint fit closely and unlikely formation gap has guaranteed product quality.

Claims

1, a kind of Inflatable balance template, has guide pillar (1), template on guide pillar (2), be connected in the mould (4) of template (2), it is characterized in that between template (2) and mould (4), also having Die and mould plate (3), said Die and mould plate (3) is connected with mould (4), be connected for the elasticity of pushing down by spring (14) with template (2) and with guide pillar (1) sliding connection, the seal (7) of annular and the counter balance pocket (8) that is formed by sealing part (7) sealing are arranged between the faying face of Die and mould plate (3) and template (2), the air-filled pore (9) that communicates with counter balance pocket is arranged on template (2) or the Die and mould plate (3).

2, Inflatable balance template as claimed in claim 1 is characterized in that said seal (7) is the rubber seal ring in splayed cross section.

3, Inflatable balance template as claimed in claim 1 or 2 is characterized in that said counter balance pocket (8) has the area greater than the projected area of die cavity on die joint.

4, Inflatable balance template as claimed in claim 1 or 2, it is characterized in that the structure that said Die and mould plate (3) is connected with template (2) elasticity is that screw (12) is arranged on template (2), there is boss hole (13) corresponding position of Die and mould plate (3), the screw (11) that passes boss hole (13) and be threaded with screw (12), outer Monday of screw (11) end pushed down by screw and the other end suppresses the spring (14) on the boss of boss hole (13).