WO2022089322A1 - 一种吹瓶机单开模机构 - Google Patents

一种吹瓶机单开模机构 Download PDF

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Publication number
WO2022089322A1
WO2022089322A1 PCT/CN2021/125716 CN2021125716W WO2022089322A1 WO 2022089322 A1 WO2022089322 A1 WO 2022089322A1 CN 2021125716 W CN2021125716 W CN 2021125716W WO 2022089322 A1 WO2022089322 A1 WO 2022089322A1
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WO
WIPO (PCT)
Prior art keywords
mold
bottom mold
opening
connecting rod
support
Prior art date
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PCT/CN2021/125716
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English (en)
French (fr)
Inventor
董腾中
刘丁丁
张晓飞
吴书朋
于荣鹏
Original Assignee
江苏新美星包装机械股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202011185949.5A external-priority patent/CN112318856B/zh
Application filed by 江苏新美星包装机械股份有限公司 filed Critical 江苏新美星包装机械股份有限公司
Priority to EP21885049.3A priority Critical patent/EP4238738A1/en
Publication of WO2022089322A1 publication Critical patent/WO2022089322A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B29C49/5608—Asymmetric movement of mould parts, e.g. by moving only one mould part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B29C49/5612—Opening, closing or clamping means characterised by bottom part movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4892—Mould halves consisting of an independent main and bottom part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B29C49/5601—Mechanically operated, i.e. closing or opening of the mould parts is done by mechanic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B29C49/5613—Opening, closing or clamping means characterised by connected mould part movement, e.g. bottom part movement is linked to mould half movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Definitions

  • the invention relates to the technical field of bottle blowing, in particular to a single mold opening mechanism of a bottle blowing machine.
  • Blow molding machine is the key equipment for producing plastic bottles for various liquid packaging.
  • Each process of the blow molding machine has strict requirements and high requirements for mutual cooperation, especially for the synchronous control of the opening and closing motion of the single mold side mold and the swinging and lifting motion of the bottom mold. strict.
  • the plane four-bar linkage mechanism realizes the opening and closing of the side mold
  • the composite mechanism formed by the cylindrical space cam and the space linkage mechanism realizes the swing of the bottom mold and the lifting of the bottom mold
  • the space linkage mechanism realizes the swing of the bottom mold.
  • the oscillating bottom mold is driven up and down simultaneously by the cylindrical space cam. Advantages of the mechanism: simple structure and few moving parts.
  • the purpose of the present invention is to provide a single mold opening mechanism of a bottle blowing machine, which can precisely control the motion law of the movable side mold and the bottom mold, has a simple structure, small dynamic load, can effectively reduce the vibration and impact of the mechanism, and reduce the damage of parts and components. Wear, enhance the movement stability and reliability of the blow molding machine, and improve the high-speed performance of the whole machine.
  • the technical scheme adopted in the present invention is:
  • a single mold opening mechanism of a bottle blowing machine comprising a mold frame support, a fixed side mold fixedly connected to the mold frame support, and an opening and closing mold that can be rotated around a first axis and is provided on the mold frame support
  • the single mold opening mechanism also includes a bottom mold connecting rod, one end of which is rotatably connected to the bottom mold support, and a bottom mold swing arm, one end of which is rotatably connected to the other end of the bottom mold connecting rod. The other end is fixedly connected to the rotating shaft of the mold opening and closing;
  • the single mold opening mechanism also includes a bottom mold swing rod, one end of which is rotatable around the third axis line, and is provided on the bottom mold bracket, and the two ends are respectively connected to the spherical surface hinged one by one through the joint bearings fixed on it.
  • the space connecting rod on the mold base bracket and the other end of the bottom mold swing rod, the bottom mold crank with one end fixed on the bottom mold swing rod, and the two ends are respectively connected to the other end of the bottom mold crank and the bottom mold pull rod on the bottom mold;
  • the first axis line and the second axis line are respectively located on both sides of the mold clamping center line; when the blow molding machine opens the mold, the mold opening and closing rotating shaft is used to drive the movable side mold to rotate away from the
  • the fixed side mold is used to drive the bottom mold support to move toward the mold opening through the bottom mold swing arm and the bottom mold connecting rod; the bottom mold support is used to pass the bottom mold swing rod, the space connecting rod, the bottom mold crank and the bottom mold pull rod drive the bottom mold to descend;
  • the link mechanism formed by the bracket and the fixed side mold fixed on it is a plane four-link mechanism
  • the link mechanism formed by the mold base support, the bottom mold support, the bottom mold swing rod, and the space connecting rod is a space four-link mechanism
  • the bottom mold crank, the bottom mold pull rod, the bottom mold support, the bottom mold guide rail fixedly connected to it, and the connecting rod mechanism formed by the bottom mold are plane crank slider mechanism;
  • a series-type combined link-type bottom mold lifting mechanism is formed by the series connection of the space four-bar linkage mechanism and the plane crank-slider mechanism;
  • the single mold opening mechanism is formed by the series connection of the series-type combined link-type bottom mold lifting mechanism and the plane four-bar linkage mechanism.
  • the horizontal connecting line of the first axis line and the second axis line passes through the clamping center line.
  • the mold opening and closing rotating shaft is used to drive the bottom mold bracket to rotate through the bottom mold swing arm and the bottom mold connecting rod, so that the bottom mold curve faces toward the bottom mold.
  • the mold opening is moved.
  • the curved swing motion trajectory of the bottom mold is arc-shaped convex in the direction toward the moving side mold.
  • the mold opening and closing shaft is rotatable around its own axis and is provided on the mold frame support, and the first axis, the second axis, and the clamping center are mutually parallel.
  • the rotation axis lines of the two ends of the bottom mold connecting rod are respectively parallel to the second axis line.
  • the second axis is perpendicular to the third axis.
  • the rotation axis lines of the two ends of the bottom mold tie rod are respectively parallel to the third axis line.
  • the angle between the movement plane of the bottom mold swing rod relative to the bottom mold support and the space link is ⁇ , where -30° ⁇ 30°.
  • the included angle between the bottom mold crank and the bottom mold pull rod is ⁇ , where 170° ⁇ 180°.
  • the angle between the bottom mold connecting rod and the bottom mold swing arm is ⁇ , where 175° ⁇ 180°; During the mold, the angle between the bottom mold connecting rod and the bottom mold swing arm gradually decreases.
  • the present invention has the following advantages compared with the prior art:
  • the present invention is a single mold opening mechanism for a bottle blowing machine.
  • the bottom mold is moved toward the opening of the mold opening, and the rotating bottom mold bracket is also used to synchronously drive the bottom mold to descend, so as to realize the precise coordination between the bottom mold swinging and lifting and the side mold opening and closing.
  • the single mold opening mechanism has the following advantages:
  • the bottom mold support drives the bottom mold to swing towards the opening of the mold opening, so that the bottle-taking robot has a shorter bottle-taking stroke, and can easily take out the bottle, and the smaller opening and closing angle of the moving side mold can realize the bottle-taking operation of the robot;
  • the mold closing rotation time can be relatively prolonged, reducing the impact during mold closing, and the mold closing dynamic performance is good, which is conducive to vibration reduction and noise reduction;
  • the movement law of the movable side die and the bottom die can be precisely controlled, the structure is simple, the dynamic load is small, the vibration and impact of the mechanism can be effectively reduced, the wear of parts and components can be reduced, and the movement stability and reliability of the blow molding machine can be enhanced. , to improve the high-speed performance of the whole machine.
  • FIG. 3 is a schematic diagram of the clamping structure of the device of the present invention two (hidden mold support);
  • Figure 8 is a top view of the mold opening (the mold base bracket is hidden).
  • Mold frame support 2. Fixed side mold; 3. First axis line; 4. Opening and closing mold rotating shaft; 5. Opening and closing mold rotor arm; ;8. Bottom mold bracket; 9. Bottom mold guide rail; 10. Bottom mold; 11. Bottom mold connecting rod; 12. Bottom mold swing arm; 13. Third axis line; 14. Bottom mold swing rod; 15. Space Connecting rod; 16. Bottom mold crank; 17. Bottom mold pull rod; 18. Center line of mold clamping.
  • the above-mentioned single mold opening mechanism of a bottle blowing machine includes a mold base support 1, a fixed side mold 2 fixedly connected to the mold base support 1, and a set rotatable around the first axis line 3.
  • the bottom mold 10 can be raised and lowered on the bottom mold guide rail 9 .
  • the mold opening and closing cam acts on the other end of the mold opening and closing rotor arm 5 to drive the mold opening and closing shaft 4 to rotate, so that the movable side mold 6 can open and close the mold relative to the fixed side mold 2 .
  • the above-mentioned single mold opening mechanism also includes a bottom mold connecting rod 11 rotatably connected to the bottom mold support 8 at one end, a bottom mold swing arm 12 rotatably connected to the other end of the bottom mold connecting rod 11 at one end, and the other end of the bottom mold swing arm 12 . It is fixed on the mold opening and closing shaft 4.
  • the rotation axis lines of both ends of the bottom mold connecting rod 11 extend in the vertical direction.
  • the above-mentioned single mold opening mechanism also includes a bottom mold swing rod 14 whose lower end can rotate around the third axis line 13 and is provided on the bottom mold bracket 8, and the two ends are respectively connected to the spherical surface hinged one-to-one by the joint bearing fixed on it.
  • the space connecting rod 15 on the upper end of the bottom mold swing rod 14 and the mold base bracket 1, the bottom mold crank 16 whose lower end is fixedly connected to the lower end of the bottom mold swing rod 14, and the two ends are respectively rotatably connected to the upper end of the bottom mold crank 16 and the bottom mold 10.
  • Bottom die pull rod 17 on the top
  • the rotational axis lines of the two ends of the bottom mold tie rod 17 are parallel to the third axis line 13 and extend in the horizontal direction.
  • the bottom mold support 8 rotates around the second axis line 7
  • the bottom mold support 8 drives the bottom mold swing rod 14 to rotate relative to the bottom mold support 8 through the space connecting rod 15, and the bottom mold swing rod 14 is rotating.
  • the bottom mold crank 16 is driven to rotate around the third axis line 13 to drive the bottom mold 10 to rise and fall through the bottom mold pull rod 17 .
  • the space connecting rod 15 here is a common connecting rod, which connects two mutually perpendicular rotating shafts through joint bearings at both ends.
  • the movable side mold 6 and the fixed side mold 2 have a clamping center line 18.
  • the first axis line 3 and the second axis line 7 are respectively located on both sides of the clamping center line 18.
  • the clamping center line 18 is the time when the mold is closed.
  • the mold opening and closing rotating shaft 4 is arranged on the mold frame support 1 so as to rotate around its own axis.
  • the first axis 3 ie the axis of the mold opening and closing rotating shaft 4
  • the second The center line 7 and the clamping center line 18 are parallel to each other and extend in the vertical direction. in the same plane.
  • the connecting rod mechanism formed by the fixed side mold 2 on the upper part is a plane four-link mechanism;
  • the connecting rod mechanism composed of the bottom mold crank 16, the bottom mold pull rod 17, the bottom mold bracket 8, the bottom mold guide rail 9 and the bottom mold 10 fixed on it is a plane crank slider mechanism;
  • the series connection of the connecting rod mechanism and the above-mentioned plane crank-slider mechanism constitutes a series-type combined connecting rod type bottom mold lifting mechanism;
  • the series connection of the above-mentioned series-type combined connecting rod type bottom mold lifting mechanism and the above-mentioned plane four-bar linkage mechanism constitutes a kind of Single mold opening mechanism.
  • the single mold opening mechanism of the bottle blowing machine is composed of a plane four-bar linkage mechanism, a space four-bar linkage mechanism and a plane crank-slider mechanism, which can avoid the difficulty of installation and positioning caused by the use of cylindrical space cams, high compressive stress, and easy damage to the rotor. stuck, etc.
  • the mold opening and closing shaft 4 is used to drive the movable side mold 6 to rotate away from the fixed side mold 2 around the first axis line, and is used to drive the bottom mold support through the bottom mold swing arm 12 and the bottom mold connecting rod 11.
  • the bottom mold support 8 drives the bottom mold swing rod 14 to rotate relative to the bottom mold support 8 through the space connecting rod 15, and the bottom mold swing rod 14 is rotating.
  • the bottom mold crank 16 is driven to rotate around the third axis line 13 to drive the bottom mold 10 to descend through the bottom mold pull rod 17 .
  • the mold opening and closing shaft 4 is used to drive the movable side mold 6 to rotate around the first axis and close to the fixed side mold 2 to reset, and is used to drive the bottom mold through the bottom mold swing arm 12 and the bottom mold connecting rod 11.
  • the support 8 and the bottom mold 10 are rotated and reset around the second axis line; the bottom mold support 8 drives the bottom mold swing rod 14 to rotate and reset relative to the bottom mold support 8 through the space connecting rod 15, and the bottom mold swing rod 14 drives the bottom mold while rotating.
  • the crank 16 is rotated and reset around the third axis line 13 to drive the bottom mold 10 to rise and reset through the bottom mold pull rod 17 .
  • the mold opening and closing shaft 4 is used to drive the bottom mold bracket 8 to rotate through the bottom mold swing arm 12 and the bottom mold connecting rod 11, so that the bottom mold 10 curve moves toward the mold opening opening.
  • the curved swing track of the bottom mold 10 is arc-shaped convex in the direction toward the moving side mold 6 .
  • the width of the opening and closing of the mold is not less than the diameter of the bottle body, so that the bottle-taking manipulator can take out the bottle outwards.
  • the bottle-taking robot since the movement trajectory of the bottle is toward the mold opening, the bottle-taking robot has a short bottle-taking stroke, which can easily Take out the bottle, and take out the bottle quickly, after the bottle is taken out, it can enter the mold clamping process, and the small opening and closing angle of the movable side mold 6 can realize the bottle taking operation of the robot. Since the opening and closing angle of the movable side mold 6 is small, the mold opening rotation time is short, so that the mold closing rotation time can be relatively prolonged, the impact during mold closing is reduced, and the acceleration when the bottom mold 10 is raised and reset is reduced.
  • the second axis line 7 extends in the vertical direction
  • the third axis line 13 extends in the horizontal direction
  • the second axis line 7 is perpendicular to the third axis line 13, that is, the bottom mold swing rod 14
  • the movement plane relative to the bottom mold support 8 and the movement plane of the bottom mold support 8 are perpendicular to each other.
  • the angle between the movement plane of the bottom mold swing rod 14 relative to the bottom mold support 8 and the space connecting rod 15 is ⁇ , where -30° ⁇ 30°. In this embodiment, -5° ⁇ 5°.
  • the included angle between the bottom mold crank 16 and the bottom mold pull rod 17 is ⁇ , where 170° ⁇ 180°. In this embodiment, 175° ⁇ 180°.
  • both the bottom mold 10 and the side molds (including the movable side mold 6 and the fixed side mold 2 ), one is provided with a wedge-shaped ring groove, and the other is provided with a wedge-shaped snap ring for snapping into the wedge-shaped ring groove .
  • the rotor arm 5 for opening and closing the mold drives the movable side mold 6 to gradually open, and at the same time drives the bottom mold 10 to swing in the direction of the mold opening, until the wedge-shaped ring groove and the wedge-shaped snap ring are completely separated, and the single mold opening mechanism controls the bottom mold 10.
  • the displacement generated in the vertical direction is smaller than the gap between the wedge-shaped snap ring and the wedge-shaped ring groove, forming an approximate rest period of the bottom mold movement in the vertical direction;
  • the single mold opening mechanism controls the moving side mold 6 to continue to open, and at the same time controls the bottom mold 10 to continue to swing in the direction of the mold opening, and descends a large displacement in the vertical direction to the lowest point, which is in line with the bottle picking mechanism. Bottle movement without interference.
  • the single mold opening mechanism controls the moving side mold 6 to gradually close, and at the same time controls the bottom mold 10 to swing in the direction of the fixed side mold 2, and raises a large displacement in the vertical direction until the wedge-shaped snap ring can enter the wedge-shaped ring groove. There is no interference with the blank feeding movement of the blank feeding mechanism;
  • the rotor arm 5 for opening and closing the mold drives the movable side mold 6 to continue to close, and at the same time drives the bottom mold support 8 to swing in the direction of the fixed side mold 2.
  • the single mold opening mechanism Controlling the displacement of the bottom mold 10 in the vertical direction is smaller than the gap between the wedge-shaped snap ring and the wedge-shaped ring groove, again forming an approximate rest period of the bottom mold movement in the vertical direction.
  • the angle between the bottom mold connecting rod 11 and the bottom mold swing arm 12 is ⁇ , where 175° ⁇ 180°.
  • the angle between the bottom mold connecting rod 11 and the bottom mold swing arm 12 gradually decreases.

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  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

本发明公开了一种吹瓶机单开模机构，包括模架支架、定边模、可绕第一轴心线转动的设于模架支架上的开合模转轴、开合模转子臂、动边模、可绕第二轴心线转动的设于模架支架上的底模支架、底模导轨、底模、底模连杆、底模摆臂、底模摆杆、空间连杆、底模曲柄、底模拉杆；第一轴心线和第二轴心线分别位于合模中心线的两侧；吹瓶机开模时，开合模转轴用于驱动动边模转动远离定边模，并用于驱动底模支架朝向开模开口处运动；底模支架用于驱动底模下降。本发明一种吹瓶机单开模机构，可精确控制动边模与底模的运动规律，结构简单，动载荷小，能有效降低机构的振动和冲击，减小零部件磨损，增强吹瓶机的运动平稳性与可靠性，提高整机的高速性能。

Description

一种吹瓶机单开模机构 技术领域
本发明涉及吹瓶技术领域，特别涉及一种吹瓶机单开模机构。
背景技术
吹瓶机是生产各种液体包装用塑料瓶的关键设备，吹瓶机各工序要求严格，相互配合要求高，尤其对单开模边模开合运动与底模摆动升降运动的同步控制要求甚严。
现有的吹瓶机中，平面四连杆机构实现边模开合，柱面空间凸轮与空间连杆机构形成的复合机构实现底模摆动与底模升降，空间连杆机构实现底模摆动，摆动的底模又在柱面空间凸轮的驱动下同时实现升降。机构优点：结构简单、运动零部件少。机构缺点：1)柱面空间凸轮的凸轮凸缘或沟槽轮廓的设计、加工精度要求高，凸轮的安装定位难度大，转子易卡死；2)转子与凸轮轮廓接触面易形成点接触，压应力大，转子易损坏或凸轮廓面易磨损；3)受空间尺寸限制，通常凸轮压力角偏大，同样，转子易损坏或凸轮廓面易磨损。
发明内容
本发明的目的是提供一种吹瓶机单开模机构，可精确控制动边模与底模的运动规律，结构简单，动载荷小，能有效降低机构的振动和冲击，减小零部件的磨损，增强吹瓶机的运动平稳性与可靠性，提高整机的高速性能。
为达到上述目的，本发明采用的技术方案是：
一种吹瓶机单开模机构，包括模架支架、固连于所述模架支架上的定边模、可绕第一轴心线转动的设于所述模架支架上的开合模转轴、一端固连于所述开合模转轴上的且用于通过开合模凸轮驱动的开合 模转子臂、固连于所述开合模转轴上的动边模、可绕第二轴心线转动的设于所述模架支架上的底模支架、固连于所述底模支架上的底模导轨、可升降的设于所述底模导轨上的底模；
所述单开模机构还包括一端转动连接在所述底模支架上的底模连杆、一端转动连接在所述底模连杆另一端上的底模摆臂，所述底模摆臂的另一端固连于所述开合模转轴上；
所述单开模机构还包括一端可绕第三轴心线转动的设于所述底模支架上的底模摆杆、两端分别通过固连于其上的关节轴承一一对应的球面铰接于所述模架支架和所述底模摆杆另一端上的空间连杆、一端固连于所述底模摆杆上的底模曲柄、两端分别转动连接在所述底模曲柄另一端和所述底模上的底模拉杆；
所述第一轴心线和所述第二轴心线分别位于合模中心线的两侧；吹瓶机开模时，所述开合模转轴用于驱动所述动边模转动远离所述定边模，并用于通过所述底模摆臂和所述底模连杆驱动所述底模支架朝向所述开模开口处运动；所述底模支架用于通过所述底模摆杆、所述空间连杆、所述底模曲柄和所述底模拉杆驱动所述底模下降；
所述开合模转子臂及与其固连于所述开合模转轴上的所述动边模和所述底模摆臂、所述底模支架、所述底模连杆、所述模架支架及固连于其上的所述定边模所构成的连杆机构为平面四连杆机构；
所述模架支架、所述底模支架、所述底模摆杆、所述空间连杆所构成的连杆机构为空间四连杆机构；
所述底模曲柄、所述底模拉杆、所述底模支架及固连于其上的所述底模导轨、所述底模所构成的连杆机构为平面曲柄滑块机构；
由所述空间四连杆机构与所述平面曲柄滑块机构的串联，构成串联型组合连杆式底模升降机构；
由所述串联型组合连杆式底模升降机构与所述平面四连杆机构的串联，构成所述单开模机构。
优选地，所述第一轴心线和所述第二轴心线的水平连线经过所述 合模中心线。
更优选地，所述吹瓶机开模时，所述开合模转轴用于通过所述底模摆臂和所述底模连杆驱动所述底模支架转动，使所述底模曲线朝向所述开模开口处运动。
更进一步优选地，所述底模的曲线摆动运动轨迹沿朝向所述动边模的方向弧形凸起。
优选地，所述开合模转轴可绕自身轴心线方向转动的设于所述模架支架上，所述第一轴心线、所述第二轴心线、所述合模中心线相互平行。
更优选地，所述底模连杆两端的转动轴心线分别平行于所述第二轴心线。
优选地，所述第二轴心线垂直于所述第三轴心线。
优选地，所述底模拉杆两端的转动轴心线分别平行于所述第三轴心线。
优选地，所述底模摆杆相对所述底模支架的运动平面与所述空间连杆之间的夹角为α，其中-30°≤α≤30°。
优选地，所述底模处于上端起始点时，所述底模曲柄与所述底模拉杆之间的夹角为β，其中170°≤β≤180°。
优选地，所述吹瓶机处于合模状态时，所述底模连杆和所述底模摆臂之间的夹角为γ，其中175°≤γ≤180°；所述吹瓶机开模时，所述底模连杆和所述底模摆臂之间的夹角逐渐减小。
由于上述技术方案的运用，本发明与现有技术相比具有下列优点：本发明一种吹瓶机单开模机构，吹瓶机开模时，开合模凸轮用于驱动底模支架转动，使底模朝向开模开口处运动，转动的底模支架还用于同步驱动底模下降，实现底模摆动升降与边模开合的精准配合，该单开模机构具有以下优点：
(1)底模支架带动底模朝向开模开口处摆动，使得取瓶机械手 取瓶行程较短，能够容易的取出瓶子，动边模较小的开合角度即能实现机械手的取瓶操作；
(2)由于动边模开合角度较小，开模回转时间较短，使得合模回转时间能够相对延长，减少了合模时的撞击，合模动力性能较好，利于减振降噪；
(3)由于底模随底模支架朝向开模开口处摆动，动边模开合角度较小，底模动程可设计得较小，底模动力特性较好；
(4)可精确控制动边模与底模的运动规律，结构简单，动载荷小，能有效降低机构的振动和冲击，减小零部件的磨损，增强吹瓶机的运动平稳性与可靠性，提高整机的高速性能。
附图说明
附图1为本发明装置的合模结构示意图一；
附图2为本发明装置的开模结构示意图一；
附图3为本发明装置的合模结构示意图二(隐藏模架支架)；
附图4为本发明装置的开模结构示意图二(隐藏模架支架)；
附图5为合模仰视图(隐藏模架支架)；
附图6为合模俯视图(隐藏模架支架)；
附图7为开模仰视图(隐藏模架支架)；
附图8为开模俯视图(隐藏模架支架)。
其中：1、模架支架；2、定边模；3、第一轴心线；4、开合模转轴；5、开合模转子臂；6、动边模；7、第二轴心线；8、底模支架；9、底模导轨；10、底模；11、底模连杆；12、底模摆臂；13、第三轴心线；14、底模摆杆；15、空间连杆；16、底模曲柄；17、底模拉杆；18、合模中心线。
具体实施方式
下面结合附图来对本发明的技术方案作进一步的阐述。
参见图1-8所示，上述一种吹瓶机单开模机构，包括模架支架1、 固连于模架支架1上的定边模2、可绕第一轴心线3转动的设于模架支架1上的开合模转轴4、一端固连于开合模转轴4上的且用于通过开合模凸轮(图中未示出)驱动的开合模转子臂5、固连于开合模转轴4上的动边模6、可绕第二轴心线7转动的设于模架支架1上的底模支架8、固连于底模支架8上的底模导轨9、可升降的设于底模导轨9上的底模10。通过开合模凸轮作用于开合模转子臂5的另一端，以驱动开合模转轴4转动,使动边模6能够相对定边模2开合模。
上述单开模机构还包括一端转动连接在底模支架8上的底模连杆11、一端转动连接在底模连杆11另一端上的底模摆臂12，底模摆臂12的另一端固连于开合模转轴4上。在本实施例中，底模连杆11两端的转动轴心线沿竖直方向延伸。开合模转轴4转动时，通过底模摆臂12和底模连杆11驱动底模支架8绕第二轴心线7转动。
上述单开模机构还包括下端可绕第三轴心线13转动的设于底模支架8上的底模摆杆14、两端分别通过固连于其上的关节轴承一一对应的球面铰接于底模摆杆14上端和模架支架1上的空间连杆15、下端固连于底模摆杆14下端的底模曲柄16、两端分别转动连接在底模曲柄16上端和底模10上的底模拉杆17。在本实施例中，底模拉杆17两端的转动轴心线平行于第三轴心线13，且沿水平方向延伸。开合模转轴4转动时，底模支架8绕第二轴心线7转动，底模支架8通过空间连杆15带动底模摆杆14相对底模支架8转动，底模摆杆14在转动的同时带动底模曲柄16绕第三轴心线13转动，以通过底模拉杆17驱动底模10升降。
这里的空间连杆15即为普通连杆，通过两端的关节轴承连接两条相互垂直的转动轴。
动边模6和定边模2具有合模中心线18，第一轴心线3和第二轴心线7分别位于合模中心线18的两侧，合模中心线18即为合模时瓶子的轴心线。在本实施例中，开合模转轴4可绕自身轴心线方向转动的设于模架支架1上，第一轴心线3(即开合模转轴4的轴心线)、第二轴心线7、合模中心线18三者相互平行，且均沿竖直方向延伸， 第一轴心线3和第二轴心线7的水平连线经过合模中心线18，即三者位于同一平面中。通过这个设置，能够避免开模时，动边模6和底模10的转动相互干涉。
由开合模转子臂5及与其固连于开合模转轴4上的动边模6和底模摆臂12、底模支架8、底模连杆11、模架支架1及固连于其上的定边模2所构成的连杆机构为平面四连杆机构；由模架支架1、底模支架8、底模摆杆14、空间连杆15所构成的连杆机构为空间四连杆机构；由底模曲柄16、底模拉杆17、底模支架8及固连于其上的底模导轨9、底模10所构成的连杆机构为平面曲柄滑块机构；由上述空间四连杆机构与上述平面曲柄滑块机构的串联，构成串联型组合连杆式底模升降机构；由上述串联型组合连杆式底模升降机构与上述平面四连杆机构的串联，构成一种单开模机构。
该吹瓶机单开模机构由平面四连杆机构、空间四连杆机构和平面曲柄滑块机构组成，能够避免采用柱面空间凸轮导致的安装定位难度大、压应力大、转子易损坏和卡死等问题。
吹瓶机开模时，开合模转轴4用于驱动动边模6绕第一轴心线转动远离定边模2，并用于通过底模摆臂12和底模连杆11驱动底模支架8绕第二轴心线转动，使底模10朝向开模开口处运动；底模支架8通过空间连杆15带动底模摆杆14相对底模支架8转动，底模摆杆14在转动的同时带动底模曲柄16绕第三轴心线13转动，以通过底模拉杆17驱动底模10下降。
吹瓶机合模时，开合模转轴4用于驱动动边模6绕第一轴心线转动靠近定边模2复位，并用于通过底模摆臂12和底模连杆11驱动底模支架8和底模10绕第二轴心线转动复位；底模支架8通过空间连杆15带动底模摆杆14相对底模支架8转动复位，底模摆杆14在转动的同时带动底模曲柄16绕第三轴心线13转动复位，以通过底模拉杆17驱动底模10上升复位。
在本实施例中，吹瓶机开模时，开合模转轴4用于通过底模摆臂12和底模连杆11驱动底模支架8转动，使底模10曲线朝向开模开 口处运动。底模10的曲线摆动轨迹沿朝向动边模6的方向弧形凸起。
当取瓶机械手夹持瓶子并退至开合模开口处时，此时开合模开口处的宽度不小于瓶子的瓶身直径，以便于取瓶机械手将瓶子向外取出。
相较于现有技术开模时底模10沿背离开模开口的方向运动，在本实施例中，由于瓶子的运动轨迹朝向开模开口，使得取瓶机械手取瓶行程较短，能够容易的取出瓶子，且取瓶较快，瓶子取出后即可进入合模过程，动边模6较小的开合角度即能实现机械手的取瓶操作。由于动边模6开合角度较小，开模回转时间较短，使得合模回转时间能够相对延长，减少了合模时的撞击，减少了底模10上升复位时的加速度。
在本实施例中，第二轴心线7沿竖直方向延伸，第三轴心线13沿水平方向延伸，第二轴心线7垂直于第三轴心线13，即底模摆杆14相对底模支架8的运动平面与底模支架8的运动平面相互垂直。
底模摆杆14相对底模支架8的运动平面与空间连杆15之间的夹角为α，其中-30°≤α≤30°。在本实施例中，-5°≤α≤5°。通过设置这一压力角，能够较为容易地通过空间连杆15驱动底模摆杆14相对底模支架8转动，并减小机构的磨损。
上述底模10处于上端起始点时，底模曲柄16与底模拉杆17之间的夹角为β，其中170°≤β≤180°。在本实施例中，175°≤β＜180°。通过这个设置，开模伊始阶段，随着底模支架8的摆动，β逐渐增大至180°，再逐渐减小，形成底模运动在竖直方向的近似休止期；合模闭合阶段，随着底模支架8的摆动，β逐渐增大至180°，再逐渐减小，同样形成底模运动在竖直方向的近似休止期。
在底模10与边模(包括动边模6和定边模2)两者中，一者上设有楔形环槽，另一者上设有用于卡入该楔形环槽中的楔形卡环。
开模初期，开合模转子臂5带动动边模6逐渐张开，同时带动底模10往模具开口方向摆动，直至楔形环槽与楔形卡环完全脱离前， 单开模机构控制底模10在竖直方向产生的位移小于楔形卡环与楔形环槽的间隙，形成底模运动在竖直方向的近似休止期；
开模中后期，单开模机构控制动边模6继续张开，同时控制底模10继续往模具开口方向摆动，并在竖直方向上下降较大位移至最低点，与取瓶机构的取瓶运动无干涉。
合模初中期，单开模机构控制动边模6逐渐闭合，同时控制底模10往定边模2方向摆动，并在竖直方向上上升较大位移直至楔形卡环能进入楔形环槽，与送坯机构的送坯运动无干涉；
合模后期，开合模转子臂5带动动边模6继续闭合，同时带动底模支架8往定边模2方向摆动，楔形卡环进入楔形环槽后直至完全对合前，单开模机构控制底模10在竖直方向产生的位移小于楔形卡环与楔形环槽的间隙，再次形成底模运动在竖直方向的近似休止期。
参见图5所示，吹瓶机处于合模状态时，底模连杆11和底模摆臂12之间的夹角为γ，其中175°≤γ≤180°。参见图7所示，吹瓶机开模时，底模连杆11和底模摆臂12之间的夹角逐渐减小。通过这个设置，开模时，底模支架8转动相对较慢，能够避免底模10与动边模6的转动造成干涉。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (12)

  1. 一种吹瓶机单开模机构，包括模架支架、固连于所述模架支架上的定边模、可绕第一轴心线转动的设于所述模架支架上的开合模转轴、一端固连于所述开合模转轴上的且用于通过开合模凸轮驱动的开合模转子臂、固连于所述开合模转轴上的动边模、可绕第二轴心线转动的设于所述模架支架上的底模支架、固连于所述底模支架上的底模导轨、可升降的设于所述底模导轨上的底模；
    所述单开模机构还包括一端转动连接在所述底模支架上的底模连杆、一端转动连接在所述底模连杆另一端上的底模摆臂，所述底模摆臂的另一端固连于所述开合模转轴上；
    其特征在于：所述单开模机构还包括一端可绕第三轴心线转动的设于所述底模支架上的底模摆杆、两端分别通过固连于其上的关节轴承一一对应的球面铰接于所述模架支架和所述底模摆杆另一端上的空间连杆、一端固连于所述底模摆杆上的底模曲柄、两端分别转动连接在所述底模曲柄另一端和所述底模上的底模拉杆；
    所述第一轴心线和所述第二轴心线分别位于合模中心线的两侧；吹瓶机开模时，所述开合模转轴用于驱动所述动边模转动远离所述定边模，并用于通过所述底模摆臂和所述底模连杆驱动所述底模支架朝向所述开模开口处运动；所述底模支架用于通过所述底模摆杆、所述空间连杆、所述底模曲柄和所述底模拉杆驱动所述底模下降；
    所述开合模转子臂及与其固连于所述开合模转轴上的所述动边模和所述底模摆臂、所述底模支架、所述底模连杆、所述模架支架及固连于其上的所述定边模所构成的连杆机构为平面四连杆机构；
    所述模架支架、所述底模支架、所述底模摆杆、所述空间连杆所构成的连杆机构为空间四连杆机构；
    所述底模曲柄、所述底模拉杆、所述底模支架及固连于其上的所述底模导轨、所述底模所构成的连杆机构为平面曲柄滑块机构；
    由所述空间四连杆机构与所述平面曲柄滑块机构的串联，构成串 联型组合连杆式底模升降机构；
    由所述串联型组合连杆式底模升降机构与所述平面四连杆机构的串联，构成所述单开模机构；
    所述第一轴心线和所述第二轴心线的水平连线经过所述合模中心线；
    所述吹瓶机开模时，所述开合模转轴用于通过所述底模摆臂和所述底模连杆驱动所述底模支架转动，使所述底模曲线朝向所述开模开口处摆动；
    所述底模的曲线摆动轨迹沿朝向所述动边模的方向弧形凸起；
    所述开合模转轴可绕自身轴心线方向转动的设于所述模架支架上，所述第一轴心线、所述第二轴心线、所述合模中心线相互平行；
    所述底模连杆两端的转动轴心线分别平行于所述第二轴心线；
    所述第二轴心线垂直于所述第三轴心线；
    所述底模拉杆两端的转动轴心线分别平行于所述第三轴心线；
    所述底模摆杆相对所述底模支架的运动平面与所述空间连杆之间的夹角为α，其中-30°≤α≤30°；
    所述底模处于上端起始点时，所述底模曲柄与所述底模拉杆之间的夹角为β，其中170°≤β≤180°；
    所述吹瓶机处于合模状态时，所述底模连杆和所述底模摆臂之间的夹角为γ，其中175°≤γ≤180°；所述吹瓶机开模时，所述底模连杆和所述底模摆臂之间的夹角逐渐减小。
  2. 一种吹瓶机单开模机构，包括模架支架、固连于所述模架支架上的定边模、可绕第一轴心线转动的设于所述模架支架上的开合模转轴、一端固连于所述开合模转轴上的且用于通过开合模凸轮驱动的开合模转子臂、固连于所述开合模转轴上的动边模、可绕第二轴心线转动的设于所述模架支架上的底模支架、固连于所述底模支架上的底模导轨、可升降的设于所述底模导轨上的底模；
    所述单开模机构还包括一端转动连接在所述底模支架上的底模 连杆、一端转动连接在所述底模连杆另一端上的底模摆臂，所述底模摆臂的另一端固连于所述开合模转轴上；
    其特征在于：所述单开模机构还包括一端可绕第三轴心线转动的设于所述底模支架上的底模摆杆、两端分别通过固连于其上的关节轴承一一对应的球面铰接于所述模架支架和所述底模摆杆另一端上的空间连杆、一端固连于所述底模摆杆上的底模曲柄、两端分别转动连接在所述底模曲柄另一端和所述底模上的底模拉杆；
    所述第一轴心线和所述第二轴心线分别位于合模中心线的两侧；吹瓶机开模时，所述开合模转轴用于驱动所述动边模转动远离所述定边模，并用于通过所述底模摆臂和所述底模连杆驱动所述底模支架朝向所述开模开口处运动；所述底模支架用于通过所述底模摆杆、所述空间连杆、所述底模曲柄和所述底模拉杆驱动所述底模下降；
    所述开合模转子臂及与其固连于所述开合模转轴上的所述动边模和所述底模摆臂、所述底模支架、所述底模连杆、所述模架支架及固连于其上的所述定边模所构成的连杆机构为平面四连杆机构；
    所述模架支架、所述底模支架、所述底模摆杆、所述空间连杆所构成的连杆机构为空间四连杆机构；
    所述底模曲柄、所述底模拉杆、所述底模支架及固连于其上的所述底模导轨、所述底模所构成的连杆机构为平面曲柄滑块机构；
    由所述空间四连杆机构与所述平面曲柄滑块机构的串联，构成串联型组合连杆式底模升降机构；
    由所述串联型组合连杆式底模升降机构与所述平面四连杆机构的串联，构成所述单开模机构。
  3. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述第一轴心线和所述第二轴心线的水平连线经过所述合模中心线。
  4. 根据权利要求3所述的一种吹瓶机单开模机构，其特征在于：所述吹瓶机开模时，所述开合模转轴用于通过所述底模摆臂和所述底模连杆驱动所述底模支架转动，使所述底模曲线朝向所述开模开口处 摆动。
  5. 根据权利要求4所述的一种吹瓶机单开模机构，其特征在于：所述底模的曲线摆动轨迹沿朝向所述动边模的方向弧形凸起。
  6. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述开合模转轴可绕自身轴心线方向转动的设于所述模架支架上，所述第一轴心线、所述第二轴心线、所述合模中心线相互平行。
  7. 根据权利要求6所述的一种吹瓶机单开模机构，其特征在于：所述底模连杆两端的转动轴心线分别平行于所述第二轴心线。
  8. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述第二轴心线垂直于所述第三轴心线。
  9. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述底模拉杆两端的转动轴心线分别平行于所述第三轴心线。
  10. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述底模摆杆相对所述底模支架的运动平面与所述空间连杆之间的夹角为α，其中-30°≤α≤30°。
  11. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述底模处于上端起始点时，所述底模曲柄与所述底模拉杆之间的夹角为β，其中170°≤β≤180°。
  12. 根据权利要求2所述的一种吹瓶机单开模机构，其特征在于：所述吹瓶机处于合模状态时，所述底模连杆和所述底模摆臂之间的夹角为γ，其中175°≤γ≤180°；所述吹瓶机开模时，所述底模连杆和所述底模摆臂之间的夹角逐渐减小。
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