CN113370504B - Bottom die lifting mechanism for single die opening of bottle blowing machine - Google Patents
Bottom die lifting mechanism for single die opening of bottle blowing machine Download PDFInfo
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- CN113370504B CN113370504B CN202110598155.XA CN202110598155A CN113370504B CN 113370504 B CN113370504 B CN 113370504B CN 202110598155 A CN202110598155 A CN 202110598155A CN 113370504 B CN113370504 B CN 113370504B
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- die
- bottom die
- wedge
- rotor
- lifting mechanism
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a bottom die lifting mechanism for a single die of a bottle blowing machine, which comprises a die frame support, a bottom die support, a first sliding block, a bottom die swing rod, a space connecting rod, a bottom die pull rod and a bottom die pull rod, wherein the bottom die support is connected to the die frame support in a swinging way around the axis of a first shaft: a cam curve on one of the rotors and parallel to the first plane, and a rotor on the other rotor and rotatable around the axis direction of the rotor; the rotor is always propped against the cam curve through the peripheral surface of the rotor when the bottom die swing rod rotates; the second shaft is perpendicular to the first shaft and parallel to the rotation axis of the rotor. The bottom die lifting mechanism can accurately control the motion rule of the bottom die, and has small dynamic load.
Description
Technical Field
The invention relates to the technical field of bottle blowing, in particular to a bottom die lifting mechanism for a single die of a bottle blowing machine.
Background
Bottle blowing machines are key devices for producing plastic bottles for various liquid packages. The bottle blowing machine has strict requirements on each working procedure, high requirements on mutual matching, and especially strict requirements on synchronous control of swinging and lifting movement of a bottom die of a single die.
In the prior art, the linkage of the swinging and lifting motion of the bottom die is generally realized through a cylindrical space cam mechanism. The mechanism has the advantages that: the mechanism is simple, and the number of moving parts is small. Mechanism shortcoming: 1) The design of the cam flange or the groove contour of the cylindrical space cam has high requirements on processing precision, the mounting and positioning difficulties of the cam are high, and the rotor is easy to be blocked; 2) The contact surface of the rotor and the cylindrical space cam profile is easy to form point contact, the compressive stress is large, and the rotor is easy to damage or the cam profile is easy to wear; 3) The space size is limited, and the pressure angle of the cylindrical space cam is usually larger, and the rotor is easy to damage or the cam profile surface is easy to wear.
Disclosure of Invention
The invention aims to provide a bottom die lifting mechanism for a single die of a bottle blowing machine, which can accurately control the motion rule of the bottom die, has small dynamic load, can effectively reduce the vibration and impact of the mechanism, reduce the abrasion of parts, enhance the motion stability and reliability of the bottle blowing machine and improve the high-speed performance of the whole machine.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a die block elevating system for blowing bottle machine list die opening, is in including die carrier support, can swing around the axial lead of first axle and connect die block support on the die carrier support, liftable locate first slider on the die block support, one end can rotate around the axial lead of second axle and connect die block pendulum rod on the die block support, both ends respectively through the spherical joint bearing sphere that links firmly on it articulated in the die carrier support with the space connecting rod of die block pendulum rod other end, link firmly in die block pull rod on the die block pendulum rod, and locate in the die block pull rod with in the first slider both: a cam curve on one of the rotors and parallel to the first plane, and a rotor on the other rotor and rotatable around the axis direction of the rotor;
the rotor is always propped against the cam curve through the outer peripheral surface of the rotor in the rotation process of the bottom die swing rod;
the second shaft is perpendicular to the first shaft and parallel to the rotational axis of the rotor.
Preferably, the first slider has a raised position and a lowered position,
when the bottom die support swings forward relative to the die carrier support, the space connecting rod is driven to pull the bottom die swinging rod and the bottom die pull rod to rotate forward relative to the bottom die support, and the rotor and the cam curve drive the first sliding block to descend to a descending position;
when the bottom die support swings reversely relative to the die carrier support, the space connecting rod is driven to push the bottom die swinging rod and the bottom die pull rod to reversely rotate relative to the bottom die support, and the rotor and the cam curve drive the first sliding block to rise to the rising position.
Preferably, the first plane extends in a vertical direction, is parallel to a sliding direction of the first slider, and is perpendicular to a rotational axis of the rotor.
More preferably, the space linkage has an angle alpha with the first plane, wherein alpha is-30 deg. or more and 30 deg..
Preferably, the bottom die bracket comprises a guide rail extending along the vertical direction, and the first sliding block is slidably arranged on the guide rail.
Preferably, the bottom die swing rod is fixedly connected with the lower end of the bottom die pull rod through the lower end of the bottom die swing rod, and is rotatably connected to the bottom die support, and the bottom die swing rod and the bottom die pull rod are mutually angled.
Preferably, the bottom die support is driven to swing by an independent driving mechanism or a linkage mechanism linked with the movable side die.
Preferably, the first slider further comprises a connecting piece, and the cam curve is arranged on the connecting piece.
Preferably, the cam curve is a curved groove or a curved flange.
Preferably, a bottom die is arranged on the first sliding block, a side die is arranged on the die frame support, a wedge-shaped ring groove is arranged on one of the bottom die and the side die, and a wedge-shaped clamping ring for clamping in the wedge-shaped ring groove is arranged on the other one of the bottom die and the side die;
when the die is opened, the die block bracket swings until the wedge ring groove and the wedge-shaped clamping ring are completely separated, and the die block lifting mechanism controls the die block to be static in the vertical direction or generate displacement smaller than the gap between the wedge-shaped clamping ring and the wedge-shaped ring groove, so that a rest period of the die block movement in the vertical direction is formed; after the bottom die bracket swings to the point that the wedge-shaped ring groove is separated from the wedge-shaped clamping ring, the bottom die lifting mechanism controls the bottom die to descend in the vertical direction for larger displacement, so that bottle taking movement of the bottle taking mechanism and the bottom die are free from interference;
when the die is closed, along with the swing of the die block bracket, the die block lifting mechanism controls the die block to lift in the vertical direction for larger displacement until the wedge-shaped clamping ring can enter the wedge-shaped annular groove; after the wedge-shaped snap ring enters the wedge-shaped ring groove, the bottom die lifting mechanism controls the bottom die to be static in the vertical direction or generate displacement smaller than the gap between the wedge-shaped snap ring and the wedge-shaped ring groove, so that a rest period of the bottom die movement in the vertical direction is formed.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the bottom die lifting mechanism for the single die of the bottle blowing machine, in the swinging process of the bottom die support, the space connecting rod drives the bottom die swinging rod and the bottom die pulling rod to rotate relative to the bottom die support, and the rotor and the cam curve are matched with each other to drive the first sliding block to lift; the cam curve is parallel to the first plane, namely the plane cam, so that the installation and positioning difficulty is low, the rotor is not easy to be blocked, the rotor and the cam curve are always in line-surface contact, the compressive stress is low, and the rotor is not easy to be worn and damaged; on the basis of vibration reduction and noise reduction, the structure is stable and reliable, the processing difficulty of parts is reduced, and meanwhile, the running speed of the whole machine can be improved.
Drawings
FIG. 1 is a schematic view of a bottom die lifting mechanism according to an embodiment of the present invention (a die clamping state);
FIG. 2 is a schematic diagram of a bottom die lifting mechanism according to an embodiment of the present invention (a die-open state);
FIG. 3 is a third schematic structural view of a bottom die lifting mechanism according to an embodiment of the present invention (in a die-clamping state and with a die-carrier support hidden);
fig. 4 is a schematic structural view of a bottom die lifting mechanism according to an embodiment of the present invention, wherein the bottom die lifting mechanism is in a die-opened state and the die carrier bracket is hidden.
Wherein: 1. a scaffold bracket; 2. a first shaft; 3. a bottom die bracket; 31. a guide rail; 32. a connecting block; 4. a first slider; 41. a connecting piece; 5. a second shaft; 6. a bottom die swing rod; 7. a spatial linkage; 8. a bottom die pull rod; 9. cam curve; 10. a rotor.
Detailed Description
The technical scheme of the invention is further described below with reference to specific embodiments and drawings.
Referring to fig. 1-4, the embodiment provides a bottom die lifting mechanism for a single die of a bottle blowing machine, which comprises a die frame support 1, a bottom die support 3 which can swing around the axis of a first shaft 2 and is connected to the die frame support 1, a first sliding block 4 which can be lifted and arranged on the bottom die support 3, a bottom die swinging rod 6 which one end of which can rotate around the axis of a second shaft 5 and is connected to the bottom die support 3, a space connecting rod 7 which is respectively hinged to the die frame support 1 and the other end of the bottom die swinging rod 6 at two ends of the bottom die swinging rod through spherical surfaces of joint bearings fixedly connected to the two ends of the bottom die swinging rod 6, and a bottom die pull rod 8 fixedly connected to the bottom die swinging rod 6. The second axis 5 is perpendicular to the first axis 2, the first axis 2 extends in a vertical direction, and the second axis 5 extends in a horizontal direction.
The movable side die and the fixed side die (not shown in the figure) are respectively arranged on the die frame bracket 1, and the die frame bracket 3 is driven to swing by an independent driving mechanism or a linkage mechanism linked with the movable side die. The first slider 4 is used for installing the die block, and the slip direction of the first slider 4 extends along the vertical direction.
Referring to fig. 3-4, the bottom die swinging rod 6 is fixedly connected with the lower end of the bottom die pull rod 8 through the lower end of the bottom die swinging rod, and is rotatably connected to the bottom die bracket 3, and the bottom die swinging rod 6 and the bottom die pull rod 8 are mutually angled. In the embodiment, the upper end of the bottom die swinging rod 6 is positioned on the right side of the upper end of the bottom die pull rod 8, and the upper end and the lower end form an acute angle with each other.
The bottom die lifting mechanism is further arranged in the bottom die pull rod 8 and the first sliding block 4: a cam curve 9 on one and parallel to the first plane, and a rotor 10 on the other and rotatable about its own axis. In the process of rotating the bottom die swing rod 6, the rotor 10 is always abutted against the cam curve 9 through the outer peripheral surface of the rotor, and the heights of the left end and the right end of the cam curve 9 are different as shown in fig. 3. The rotational axis of the rotor 10 is parallel to the second shaft 5 and also extends in the horizontal direction.
In the present embodiment, the first plane extends in the vertical direction, and the first slider 4 is lifted and lowered in the vertical direction, the first plane being perpendicular to the rotational axis of the rotor 10.
In this embodiment, the bottom die swing link 6 and the bottom die pull rod 8 are located in the same vertical plane.
In this embodiment, the first slider 4 is provided with a connecting member 41, the cam curve 9 is provided on the connecting member 41, and the rotor 10 is provided on the upper end of the die pull rod 8. The first slider 4 and the die block pull rod 8 are arranged opposite to each other, the cam curve 9 is arranged on one side of the connecting piece 41 facing the die block pull rod 8, and the rotor 10 is arranged on one side of the die block pull rod 8 facing the connecting piece 41.
The cam curve 9 is a curved groove or a curved flange, and in this embodiment, the cam curve 9 is a curved groove concavely provided on the surface of the connecting member 41, and the connecting member 41 integrally forms a planar cam in combination with the curved groove.
With this arrangement, the rotor 10 drives the first slide 4 to move up and down relative to the die holder 3 via the planar cam during the rotation of the die pull rod 8.
Referring to fig. 1, in the present embodiment, the bottom die holder 3 includes a guide rail 31 extending in a vertical direction, and the first slider 4 is slidably provided on the guide rail 31.
As shown in fig. 1, the bottom die holder 3 is pivotally connected to the die holder 1 about the axis of a first shaft 2 by a connecting block 32 at the lower end thereof, the first shaft 2 being located to the left of the hinge point of the space link 7 on the die holder 1.
The first slider 4 has a raised position (see fig. 1, 3) and a lowered position (see fig. 2, 4).
When the bottom die bracket 3 swings forward (anticlockwise) relative to the die frame bracket 1, the space connecting rod 7 is driven to rotate, the bottom die swinging rod 6 and the bottom die pull rod 8 are pulled to integrally rotate forward (anticlockwise) relative to the bottom die bracket 3, and the rotor 10 and the cam curve 9 drive the first sliding block 4 to descend to a descending position;
when the bottom die bracket 3 swings reversely (clockwise) relative to the die frame bracket 1, the space connecting rod 7 is driven to rotate, the bottom die swinging rod 6 and the bottom die pull rod 8 are pushed to integrally rotate reversely (clockwise) relative to the bottom die bracket 3, and the rotor 10 and the cam curve 9 drive the first sliding block 4 to rise to the rising position.
Because the heights of the two ends of the cam curve 9 are different, when the rotor 10 rotates relative to the bottom die bracket 3, the inclined cam curve 9 can drive the first sliding block 4 to lift relative to the bottom die bracket 3.
During the mold opening and closing process, the included angle between the space connecting rod 7 and the first plane is alpha, alpha gradually changes, wherein alpha is more than or equal to minus 30 degrees and less than or equal to minus 30 degrees, preferably more than or equal to minus 15 degrees and less than or equal to minus 15 degrees, and more preferably more than or equal to minus 5 degrees and less than or equal to minus 5 degrees.
The first slider 4 is provided with a bottom die (not shown in the figure), and the die carrier bracket 1 is provided with an edge die (not shown in the figure, including a movable edge die and a fixed edge die). One of the bottom die and the side die is provided with a wedge-shaped ring groove, and the other is provided with a wedge-shaped clamping ring for clamping in the wedge-shaped ring groove;
by setting the shape of the cam curve 9, the following is achieved:
when the die is opened, the die block bracket 3 swings until the wedge ring groove and the wedge-shaped snap ring are completely separated, and the die block lifting mechanism controls the die block to be static in the vertical direction or generate displacement smaller than the gap between the wedge-shaped snap ring and the wedge ring groove, so that a rest period of the die block movement in the vertical direction is formed; after the bottom die bracket 3 swings to the point that the wedge-shaped ring groove is separated from the wedge-shaped clamping ring, the bottom die lifting mechanism controls the bottom die to descend in the vertical direction for larger displacement, so that the bottle taking motion of the bottle taking mechanism is free from interference with the bottom die;
when the die is closed, the die lifting mechanism controls the die to lift and displace greatly in the vertical direction along with the swing of the die bracket 3 until the wedge-shaped clamping ring can enter the wedge-shaped ring groove; after the wedge-shaped snap ring enters the wedge-shaped ring groove, the bottom die lifting mechanism controls the bottom die to be static in the vertical direction or generate displacement smaller than the gap between the wedge-shaped snap ring and the wedge-shaped ring groove, so that the rest period of the bottom die movement in the vertical direction is formed.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a die block elevating system for blowing bottle machine list die opening, includes die carrier support, can swing around the axial lead of first axle and connect die carrier support on the die carrier support, liftable locate first slider on the die carrier support, its characterized in that: the bottom die lifting mechanism further comprises a bottom die swing rod, a space connecting rod, a bottom die pull rod and a first sliding block, wherein one end of the bottom die swing rod is rotatably connected to the bottom die support around the axial lead of the second shaft, the two ends of the bottom die swing rod are respectively hinged to the die carrier support and the other end of the bottom die swing rod through joint bearings fixedly connected to the bottom die swing rod, the bottom die pull rod is fixedly connected to the bottom die swing rod, and the bottom die pull rod and the first sliding block are arranged in the bottom die pull rod and the first sliding block respectively: a cam curve on one of the rotors and parallel to the first plane, and a rotor on the other rotor and rotatable around the axis direction of the rotor;
the rotor is always propped against the cam curve through the outer peripheral surface of the rotor in the rotation process of the bottom die swing rod;
the second shaft is perpendicular to the first shaft and parallel to the rotation axis of the rotor;
the bottom die support is driven to swing by an independent driving mechanism or a linkage mechanism linked with the movable side die;
the first sliding block is provided with a bottom die, the die frame support is provided with a side die, one of the bottom die and the side die is provided with a wedge-shaped ring groove, and the other is provided with a wedge-shaped clamping ring for clamping in the wedge-shaped ring groove;
when the die is opened, the die block bracket swings until the wedge ring groove and the wedge-shaped clamping ring are completely separated, and the die block lifting mechanism controls the die block to be static in the vertical direction or generate displacement smaller than the gap between the wedge-shaped clamping ring and the wedge-shaped ring groove, so that a rest period of the die block movement in the vertical direction is formed; after the bottom die bracket swings to the point that the wedge-shaped ring groove is separated from the wedge-shaped clamping ring, the bottom die lifting mechanism controls the bottom die to descend in the vertical direction for larger displacement, so that bottle taking movement of the bottle taking mechanism and the bottom die are free from interference;
when the die is closed, along with the swing of the die block bracket, the die block lifting mechanism controls the die block to lift in the vertical direction for larger displacement until the wedge-shaped clamping ring can enter the wedge-shaped annular groove; after the wedge-shaped snap ring enters the wedge-shaped ring groove, the bottom die lifting mechanism controls the bottom die to be static in the vertical direction or generate displacement smaller than the gap between the wedge-shaped snap ring and the wedge-shaped ring groove, so that a rest period of the bottom die movement in the vertical direction is formed.
2. The bottom die lifting mechanism for single die opening of bottle blowing machine as claimed in claim 1, wherein: the first slider has a raised position and a lowered position,
when the bottom die support swings forward relative to the die carrier support, the space connecting rod is driven to pull the bottom die swinging rod and the bottom die pull rod to rotate forward relative to the bottom die support, and the rotor and the cam curve drive the first sliding block to descend to a descending position;
when the bottom die support swings reversely relative to the die carrier support, the space connecting rod is driven to push the bottom die swinging rod and the bottom die pull rod to reversely rotate relative to the bottom die support, and the rotor and the cam curve drive the first sliding block to rise to the rising position.
3. The bottom die lifting mechanism for single die opening of bottle blowing machine as claimed in claim 1, wherein: the first plane extends along the vertical direction, is parallel to the sliding direction of the first sliding block and is perpendicular to the rotation axis of the rotor.
4. A bottom die lifting mechanism for single die opening of bottle blowing machine as defined in claim 3, wherein: the included angle between the space connecting rod and the first plane is alpha, wherein alpha is more than or equal to minus 30 degrees and less than or equal to 30 degrees.
5. The bottom die lifting mechanism for single die opening of bottle blowing machine as claimed in claim 1, wherein: the bottom die support comprises a guide rail extending along the vertical direction, and the first sliding block is arranged on the guide rail in a sliding manner.
6. The bottom die lifting mechanism for single die opening of bottle blowing machine as claimed in claim 1, wherein: the bottom die swing rod is fixedly connected with the lower end of the bottom die pull rod through the lower end of the bottom die swing rod, and is rotatably connected to the bottom die support, and the bottom die swing rod and the bottom die pull rod are mutually angled.
7. The bottom die lifting mechanism for single die opening of bottle blowing machine as claimed in claim 1, wherein: the first sliding block further comprises a connecting piece, and the cam curve is arranged on the connecting piece.
8. The bottom die lifting mechanism for single die opening of bottle blowing machine as claimed in claim 1, wherein: the cam curve is a curve groove or a curve flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598155.XA CN113370504B (en) | 2021-05-31 | 2021-05-31 | Bottom die lifting mechanism for single die opening of bottle blowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598155.XA CN113370504B (en) | 2021-05-31 | 2021-05-31 | Bottom die lifting mechanism for single die opening of bottle blowing machine |
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| Publication Number | Publication Date |
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| CN113370504A CN113370504A (en) | 2021-09-10 |
| CN113370504B true CN113370504B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110598155.XA Active CN113370504B (en) | 2021-05-31 | 2021-05-31 | Bottom die lifting mechanism for single die opening of bottle blowing machine |
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| CN (1) | CN113370504B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116175937B (en) * | 2022-11-18 | 2023-12-15 | 江苏新美星包装机械股份有限公司 | Bottom die lifting mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962989B (en) * | 2012-11-22 | 2015-07-29 | 广州达意隆包装机械股份有限公司 | The link gear of bottle blowing machine limit mould and bed die |
| CN104441583B (en) * | 2014-12-16 | 2016-08-17 | 广州达意隆包装机械股份有限公司 | A kind of bottle blowing machine limit mould and the flexible structure of bed die link gear |
| CN110757767A (en) * | 2019-11-04 | 2020-02-07 | 江苏中饮机械有限公司 | Bottom die linkage mechanism for bottle blowing machine |
| CN111590866A (en) * | 2020-06-30 | 2020-08-28 | 江苏中饮机械有限公司 | Linkage type bottle blowing machine module with buffer function |
| CN112109309A (en) * | 2020-09-03 | 2020-12-22 | 江苏新美星包装机械股份有限公司 | Full-connecting-rod bottom die lifting mechanism for single die opening of bottle blowing machine |
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