CN201960736U

CN201960736U - Neck ring mold mechanism of plastic blow molding machine

Info

Publication number: CN201960736U
Application number: CN2010206547048U
Authority: CN
Inventors: 戴钧陶
Original assignee: Suzhou Tongda Machinery Co Ltd
Current assignee: Suzhou Tongda Machinery Co Ltd
Priority date: 2010-12-13
Filing date: 2010-12-13
Publication date: 2011-09-07
Anticipated expiration: 2020-12-13

Abstract

The utility model discloses a neck ring mold mechanism of a plastic blow molding machine, which belongs to the technical field of blow molding machinery. The neck ring mold mechanism comprises a mold core, a mold orifice ring and a mold sleeve, wherein the mold orifice ring is fixed with the bottom of the mold sleeve; the mold sleeve is fixed with the cylinder body of an oil cylinder; and the mold core is positioned in the mold orifice ring, and is fixedly connected with an oil cylinder post of the oil cylinder. The neck ring mold mechanism is characterized by also comprising an elastic ferrule and an elastic ferrule triggering device for driving the elastic ferrule to be deformed; the elastic ferrule is positioned in the mold orifice ring; a conical cavity is kept between the elastic ferrule and the mold orifice ring; the lower part of the elastic ferrule extends out of the mold orifice ring; the mold core is positioned in the elastic ferrule; an aperture for a plastic blank to pass is formed between the outer wall of the mold core and the inner wall of the elastic ferrule; and the elastic ferrule triggering device is sleeved outside the mold orifice ring, is fixed with the mold sleeve and is matched with the outer wall of the lower part of the elastic ferrule. The neck ring mold mechanism has the advantages that: unnecessary waste of materials is avoided, and the manufacturing cost of a plastic container is lowered.

Description

The mouth mold mechanism of plastic blow molding machine

Technical field

The utility model belongs to the blowing field of mechanical technique, is specifically related to a kind of mouth mold mechanism of plastic blow molding machine.

Background technology

The mouth mold mechanism of the plastic blow molding machine in the prior art as shown in Figure 3; comprise a core rod 1, a die orifice circle 2 and a die sleeve 3 (also claiming a mouthful mould); die orifice circle 2 is fixed by the bottom of screw and die sleeve 3; die sleeve 3 is fixed with cylinder block; core rod 1 is positioned at die sleeve 3, and fixedlys connected with the oil cylinder post of oil cylinder.Work by oil cylinder makes the oil cylinder post take core rod 1 displacement and since core rod 1 be shaped as known truncated cone, so the oil cylinder post is when taking core rod 1 and moving, core rod 1 changes with respect to the gap between the die orifice circle 2 (industry is referred to as to expect).The thickness of the big more then material in gap is thick more, and vice versa, to obtain the hollow plastic container of required wall thickness.For example when core rod 1 during towards the direction displacement of mouth mould circle 2, then because core rod 1 becomes greatly with gap between mouthful mould circle 2, and load increases, and the thickness of material base is just thick, on the contrary then attenuation.

The axial wall thickness of the mouth plastic hollow vessel that mold mechanism obtained of above-mentioned plastic blow molding machine only can show as one thick all thick, and one is thin all thin, and can not embody distinctiveness.Yet, when reality is made plastic hollow vessel such as plastic cistern and plastics and is added the container of human relations bucket and so on, often exist the thickness on the same cross section to require different situations, with shape of cross section is that the container of square or rectangle is an example, the thickness of four angles needs thicker than other regional thickness usually, therefore, if use structure shown in Figure 3, so in order to ensure the intensity in four bights, usually with the satisfied thickness of other regional thickness of container (industry is referred to as just thick just thin) to the bight, thereby cause the unnecessary waste of material, energy-saving spiritual incompatible of the economizing type of advocating with the present whole society not only, and also inaction ground has increased the cost of container.

The applicant has carried out literature search, China utility model patent Granted publication CN2837051Y has recommended a kind of blow moulding machine annular die device, this patent scheme also can only integrally be regulated the relative position between the inner and outer ring, thereby there is no referential meaning for overcoming the technical problem that the applicant mentions in the above.For this reason, the applicant has carried out long-term exploration and trial repeatedly, and technical scheme described below produces under this background.

Summary of the invention

Task of the present utility model is to provide a kind of helping that material base is required to regulate and uses the mouth mold mechanism of the plastic blow molding machine of the ground waste material of avoiding doing nothing in the axial difference of wall thickness.

Task of the present utility model is finished like this; a kind of mouth mold mechanism of plastic blow molding machine; comprise core rod; die orifice circle and die sleeve; the bottom of die orifice circle and die sleeve is fixed; die sleeve and cylinder block are fixed; core rod is positioned at the die orifice circle and fixedlys connected with the oil cylinder post of oil cylinder; be characterised in that: also include an elastic collar and and be used to the elastic collar thixotroping device that forces elastic collar to deform; elastic collar is positioned at described die orifice circle; and maintain an awl chamber between the die orifice circle; and the bottom of elastic collar leans out outside the die orifice circle; described core rod is positioned at elastic collar; and constitute between the outer wall of this core rod and the inwall of elastic collar and be used for the road, crack that confession plastics material base passes through; described elastic collar thixotroping device is nested with outside described die orifice circle; fix with described die sleeve, and match with the outer wall of the bottom of described elastic collar.

In a specific embodiment of the present utility model, described elastic collar thixotroping device comprises that one adjusts ring support, and this adjustment ring support is nested with outside described die orifice circle and with the bottom of described die sleeve and fixes; One supporting mass, this group supporting mass is at the circumferencial direction of adjusting ring support and with uniformly-spaced fixing; One group of equate with the quantity of described supporting mass and nut seat that be provided with bolt and nut rotationally of quantity, this nut seat is fixed on the described supporting mass; One group of screw rod that quantity equates with the quantity of bolt and nut, an end of screw rod matches with described bolt and nut, and the other end is stretched over outside the nut seat and constitutes push rod, push rod is corresponding with described elastic collar, is used to push elastic collar; The motor and speed reducer that one group of quantity equates with the quantity of bolt and nut equally, motor matches with reductor, and takes motor by reductor and be fixed on the described supporting mass, and the speed reducer output shaft of reductor is connected with described bolt and nut.

In another specific embodiment of the present utility model, described one group of supporting mass respectively comprises horizontal supporting plate, first vertical support panel and second vertical support panel, horizontal supporting plate and described adjustment ring support are fixed, first vertical support panel and horizontal supporting plate are fixed, and constitute vertical with horizontal supporting plate, second vertical support panel is fixed with the bottom of adjusting ring support, and the ring support formation is vertical with adjusting, first, second vertical support panel is parallel to each other, and constitute the nut seat chamber between the two, wherein: on first vertical support panel, offer one first through hole, on second vertical support panel, offer one second through hole, first, second through hole corresponds to each other, described nut seat is located in the nut seat chamber, and described push rod is corresponding to described second through hole, and described reductor is taken described motor and is fixed on described first vertical support panel, and corresponding to described first through hole, described speed reducer output shaft probes into first through hole and described bolt and nut connects.

In another specific embodiment of the present utility model, described bolt and nut is arranged in the nut seat by pair of bearings rotationally, and bolt and nut constitutes a connecting bushing towards the end extension of described speed reducer output shaft, and this connecting bushing stretches out nut seat and is in transmission connection with described speed reducer output shaft.

In another specific embodiment of the present utility model, described nut seat is fixed with a shaft-cup towards a side of described speed reducer output shaft, and the opposite side of nut seat is fixed with a nut flap, the central authorities of this nut flap have a push-rod hole, and described push rod inserts push-rod hole and fixes with the nut flap.

Also have in the specific embodiment of the present utility model, described speed reducer output shaft is provided with first flat key, and the inwall of described connecting bushing is provided with the first flat key groove, and first flat key matches with the first flat key groove.

More of the present utility model and in specific embodiment, described push rod is provided with second flat key, and offers the second flat key groove on the hole wall of described push-rod hole, second flat key cooperates with the second flat key groove.

In of the present utility model and then specific embodiment, described motor is a servomotor, and the quantity of described supporting mass is 2-16.

Of the present utility model again more and in specific embodiment, described elastic collar is to be made by the metal material with elastic deformation characteristic.

In again of the present utility model and then specific embodiment, the described elastic deformation characteristic's of having metal material is spring steel, copper or copper alloy.

The technical scheme that the utility model provides is owing to done above-mentioned improvement, promptly owing to set up elastic collar and elastic collar thixotroping device, thereby force elastic collar generation deformation by elastic collar thixotroping device, road, crack between elastic collar and the core rod is changed, thereby be able on the same cross section of container to obtain thickness different wall thickness, both help to avoid the inaction waste of material, helped reducing the manufacturing cost of plastic containers again.

Description of drawings

Fig. 1 is a specific embodiment structure chart of the present utility model.

Fig. 2 is the cutaway view of Fig. 1.

Fig. 3 is the mouth mold mechanism figure of the plastic blow molding machine in the prior art.

The specific embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but to the description of embodiment all is not restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

See also Fig. 1 and Fig. 2, core rod 1 identical with known technology or that claim equivalent, die orifice circle 2 (the industry custom is called a mouthful mould) and die sleeve 3 have been provided in the drawings, die orifice circle 2 is fixing with die sleeve 3, and die sleeve 3 is fixed according to known technology and cylinder block, core rod 1 is positioned at die orifice circle 2, and the oil cylinder post of the top of core rod 1 and oil cylinder is fixed, and drives core rod 1 corresponding sports by moving up and down of oil cylinder post.

Constitute an abducent die orifice circle on the top of aforesaid die orifice circle 2 and connect boss 21, constitute one in the lower end in the die sleeve chamber 31 of die sleeve 3 adaptably therewith and connect the recessed road 311 of boss, aforesaid die orifice circle connects boss 21 and matches with connecting the recessed road 311 of boss, and by hold-down screw 211 supporting positions.Preferred scheme also can be set up an adapter sleeve 312 that plays the guiding transitional function when being used for charging in die sleeve chamber 31, adapter sleeve 312 is bearing in aforesaid die orifice circle and connects on the boss 21.

Improvement main points as the technical solution of the utility model: the mouth mold mechanism of the plastic blow molding machine of recommendation also includes (promptly having additional) following two parts, and one is that turn 4, two is an elastic collar thixotroping device 5, below these two parts is elaborated.

The preferred use of elastic collar 4 has excellent elastic deformation characteristic's for example spring steel or other equivalent material such as copper or copper alloy (albronze) making of material, this elastic collar 4 is located in the aforesaid die orifice circle 2, the top of elastic collar 4 cooperates fixing with the inwall of die orifice circle 2 by means of elastic force, constitute an awl chamber 41 between the inwall of middle part and die orifice circle 2, that is to say, on the inwall of die orifice circle 2 and recessed, form an awl chamber 41 naturally so that make between the inwall of the outer wall at middle part of elastic collar 4 and die orifice circle 2 at position corresponding to the middle part of elastic collar 4.Why being called awl chamber 41, is because the shape of elastic collar 4 is truncated cone-shaped (also can claim truncated cone) as aforesaid core rod 1.The lower extension of elastic collar 4 is outside die orifice circle 2, so that touch for the following elastic collar thixotroping device 5 that is about to describe.By shown in Figure 2, maintain between the inwall of the outer wall of core rod 1 and elastic collar 4 and be used for the road, crack 11 that passes through for the plastics material bases.When being done upper and lower displacement along with core rod 1 by the drive of oil cylinder cylinder post, then the width degree in road, crack 11 changes, and the thickness of material base is respective change just.

The structure of preferred elastic collar thixotroping device 5 is as follows: comprise and adjust ring support 51, one group of supporting mass 52, one group of nut seat 53, one group of screw rod 54, one group of motor 55 and one group of reductor 56, adjusting ring support 51 is nested with outside aforesaid die orifice circle 2, and adjusting ring support hold-down screw 511 by one group fixes with the bottom of aforesaid die sleeve 3, in order to make the outer wall of adjusting ring support 51 and die orifice circle 2 good fit, outer wall at die orifice circle 2 is concaved with the recessed road 22 of an adjustment ring support, adjusts ring support 51 and is placed on the recessed road 22 of adjustment ring support.The quantity of one group of supporting mass 52 is chosen as four in the present embodiment, the relation that the quantity of one group of nut seat describing subsequently 53, one group of screw rod 54, one group of motor 55 and one group of reductor 56 and the quantity maintenance of supporting mass 52 are followed in sb's footsteps.Say that more properly the quantity of illustrated one group of supporting mass 52 should not be subjected to the restriction of present embodiment, may be as few as two, also can reach 16 even more.Four supporting masses 52 are fixed on the circumferencial direction of adjusting ring support 51 in equally spaced mode, each supporting mass 52 comprises a horizontal supporting plate 521, first vertical support panel 522 and second vertical support panel 523, horizontal supporting plate 521 and the lateral margin solid welding of adjusting ring support 51, first vertical support panel 522 is with cantilever position and horizontal supporting plate 521 fixing (present embodiment adopts screw to fix), second vertical support panel 523 is fixed (location status shown in Figure 1 is an example) with cantilever position and the bottom of adjusting ring support 51 equally, and parallel with first vertical support panel 522.Maintain the space between first, second vertical support panel 522,523, constitute nut seat chamber 524 by this space, and on first vertical support panel 522, offer one first through hole 5221, and on second vertical support panel 523, offering one second through hole 5231, first, second through

hole

5221,5231 corresponds to each other.

Aforesaid one group of nut seat 53 is located in the corresponding nut seat chamber 524, be to set a nut seat 53 in the nut seat chamber 524 of each supporting mass 52, be provided with a bolt and nut 531 rotationally by pair of bearings 5311 in each nut seat 53, be extended with a connecting bushing 5312 at each bolt and nut 531 towards a side of first vertical support panel 522, on the inwall of connecting bushing 5312, offer one first flat key groove 53121.By shown in Figure 1, whole nut seat 53 is connected with first, second vertical support panel 522,523 by one group of bolt 534, side at nut seat 53 promptly is installed with a shaft-cup 532 towards a side of first vertical support panel 522 by screw 5321, and opposite side is promptly fixed a nut flap 533 by hold-down screw equally towards a side of second vertical support panel 523, central authorities at nut flap 533 offer a push-rod hole 5331, and are concaved with one second flat key groove 53311 on the hole wall of push-rod hole 5331.

Aforesaid one group of screw rod 54 matches with bolt and nut 531, be that each bolt and nut 531 is furnished with a screw rod 54, end with the cooperation thread that matches with bolt and nut 531 of screw rod 54 matches with bolt and nut 531, and the other end inserts aforesaid nut flap 533, this end of screw rod 54 constitutes push rod 541, and constitute one second flat key 5411 on push rod 541, this second flat key 5411 matches with the aforesaid second flat key groove 53311.When the push rod 54 of screw rod 54 was spreaded to the outer wall of elastic collar 4, elastic collar 4 just produced distortion.

Aforesaid one group of motor 55 and one group of reductor 56 are configured on the corresponding supporting mass 52, be to be furnished with a motor 55 and a reductor 56 on each supporting mass 52, motor 55 matches for servomotor and with reductor 56, take motor 55 by reductor 56 and be fixed on first vertical support panel 522, the reductor connecting axle of reductor 56 561 corresponding aforesaid first through holes 5221 and be connected with aforesaid connecting bushing 5312.Owing on speed reducer output shaft 561, be provided with first flat key 5611, therefore be connected with the first flat key groove, 53121 keys on the connecting bushing 5312 by this first flat key 5611.

During the different plastic hollow vessel of the wall thickness on will producing same cross section, make the motor with rotating function 55 (servomotor) work of elastic collar thixotroping device 5 so, slow down and drive connecting bushings 5312 through reductor 56 by the speed reducer output shaft 561 of reductor 56, drive bolt and nut 531 rotations by connecting bushing 5312, because screw rod 54 matches with bolt and nut 531, therefore make screw rod 54 rotations, make the direction displacement of screw rod 54 towards elastic collar 4, spread to by the push rod 541 of screw rod 54 and promptly to oppress elastic collar 4, be out of shape towards the direction of core rod 1 by the elastic collar 4 of push rod 541 compressings, road, crack 11 is herein narrowed down, the material nature at the narrow place in road, crack 11 shifts at 11 wide positions towards the road, crack, the material base wall at the position of the distortion that suffers oppression is approached, other position is then thick, make therefrom that introduce and material base that come from core rod 1 presents the situation that Bao Youhou is arranged on same cross section by the feed cavity 23 of die orifice circle 2, satisfying the different wall requirement of hollow plastic container, and can be ultimate attainment and reasonably avoid waste of material.

Claims

A plastic blow molding machine the mouth mold mechanism; comprise core rod (1); die orifice circle (2) and die sleeve (3); die orifice circle (2) is fixed with the bottom of die sleeve (3); die sleeve (3) is fixed with cylinder block; core rod (1) is positioned at die orifice circle (2) and fixedlys connected with the oil cylinder post of oil cylinder; it is characterized in that: also include an elastic collar (4) and and be used to the elastic collar thixotroping device (5) that forces elastic collar (4) to deform; elastic collar (4) is positioned at described die orifice circle (2); and maintain an awl chamber (41) between the die orifice circle (2); and the bottom of elastic collar (4) leans out outside the die orifice circle (2); described core rod (1) is positioned at elastic collar (4); and constitute between the inwall of outer wall of this core rod (1) and elastic collar (4) and be used for the road, crack (11) that confession plastics material base passes through; described elastic collar thixotroping device (5) is nested with outside described die orifice circle (2); fixing with described die sleeve (3), and match with the outer wall of the bottom of described elastic collar (4).
Plastic blow molding machine according to claim 1 the mouth mold mechanism, it is characterized in that described elastic collar thixotroping device (5) comprises that one adjusts ring support (51), this adjustment ring support (51) is nested with outside described die orifice circle (2) and with the bottom of described die sleeve (3) and fixes; One supporting mass (52), this group supporting mass (52) is at the circumferencial direction of adjusting ring support (51) and with uniformly-spaced fixing; Equate and the nut seat that be provided with bolt and nut (531) rotationally (53) of quantity of one group of quantity and described supporting mass (52), this nut seat (53) is fixed on the described supporting mass (52); One group of screw rod (54) that quantity equates with the quantity of bolt and nut (531), one end of screw rod (54) matches with described bolt and nut (531), and the other end is stretched over outside the nut seat (53) and constitute push rod (541), push rod (541) is corresponding with described elastic collar (4), is used to push elastic collar (4); One group of motor (55) and reductor (56) that quantity equates with the quantity of bolt and nut (531) equally, motor (55) matches with reductor (56), and take motor (55) by reductor (56) and be fixed on the described supporting mass (52), the speed reducer output shaft (561) of reductor (56) is connected with described bolt and nut (531).
Plastic blow molding machine according to claim 2 the mouth mold mechanism; it is characterized in that described one group of supporting mass (52) respectively comprises horizontal supporting plate (521); first vertical support panel (522) and second vertical support panel (523); horizontal supporting plate (521) is fixing with described adjustment ring support (51); first vertical support panel (522) is fixing with horizontal supporting plate (521); and constitute vertical with horizontal supporting plate (521); second vertical support panel (523) is fixed with the bottom of adjusting ring support (51); and ring support (51) formation is vertical with adjusting; first; second vertical support panel (522; 523) parallel to each other; and constitute nut seat chamber (524) between the two; wherein: on first vertical support panel (522), offer one first through hole (5221); on second vertical support panel (523), offer one second through hole (5231); first; second through hole (5221; 5231) correspond to each other; described nut seat (53) is located in the nut seat chamber (524); described push rod (541) is corresponding to described second through hole (5231); described reductor (56) is taken described motor (55) and is fixed on described first vertical support panel (522); and corresponding to described first through hole (5221), described speed reducer output shaft (561) probes into first through hole (5221) and connects with described bolt and nut.
Plastic blow molding machine according to claim 3 the mouth mold mechanism; it is characterized in that described bolt and nut (531) is arranged in the nut seat (53) rotationally by pair of bearings (5311); and bolt and nut (531) constitutes a connecting bushing (5312) towards the end extension of described speed reducer output shaft (561), and this connecting bushing (5312) stretches out nut seat (53) and is in transmission connection with described speed reducer output shaft (561).
Plastic blow molding machine according to claim 3 the mouth mold mechanism; it is characterized in that described in another specific embodiment of the present utility model; described nut seat (53) is fixed with a shaft-cup (532) towards a side of described speed reducer output shaft (561); and the opposite side of nut seat (53) is fixed with a nut flap (533); the central authorities of this nut flap (533) have a push-rod hole (5331), and described push rod (541) inserts push-rod hole (5331) and fixing with nut flap (533).
Plastic blow molding machine according to claim 3 the mouth mold mechanism; it is characterized in that described speed reducer output shaft (561) is provided with first flat key (5611); the inwall of described connecting bushing (5312) is provided with the first flat key groove (53121), and first flat key (5611) matches with the first flat key groove (53121).
Plastic blow molding machine according to claim 5 the mouth mold mechanism; it is characterized in that described push rod (541) is provided with second flat key (5411); and offering the second flat key groove (53311) on the hole wall of described push-rod hole (5331), second flat key cooperates with the second flat key groove (53311).
8. the mouth mold mechanism of plastic blow molding machine according to claim 2 is characterized in that described motor (55) is a servomotor, and the quantity of described supporting mass (52) is 2-16.
9. the mouth mold mechanism of plastic blow molding machine according to claim 1 and 2 is characterized in that described elastic collar 4 is to be made by the metal material with elastic deformation characteristic.
Plastic blow molding machine according to claim 9 the mouth mold mechanism, the metal material that it is characterized in that the described elastic deformation characteristic of having is spring steel, copper or copper alloy.