CN107009600B - Mould opening and closing device of blow molding machine - Google Patents
Mould opening and closing device of blow molding machine Download PDFInfo
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- CN107009600B CN107009600B CN201710418254.9A CN201710418254A CN107009600B CN 107009600 B CN107009600 B CN 107009600B CN 201710418254 A CN201710418254 A CN 201710418254A CN 107009600 B CN107009600 B CN 107009600B
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- mold
- cam
- base
- plate
- locking devices
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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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- 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
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- 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
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
A mold opening and closing device of a blow molding machine comprises a forming mold plate seat, two inner mold plates, two mold locking devices, a bottom mold seat, a cam device and a driving mechanism; the forming template base is used for erecting the two inner templates, the two mold locking devices and the bottom mould base between the two inner templates; the driving mechanism is connected with the cam device, the cam device is connected with the two inner templates, the two mold locking devices and the bottom mold base, the two inner templates and the two mold locking devices can reciprocate back and forth, and the bottom mold base is driven to move up and down to synchronously open and close the molds. The invention can synchronously open and close the bottom die and the two inner templates through the driving of the servo motor, thereby rapidly and accurately opening and closing the two half dies and the bottom die of the blow molding machine, simplifying the molding structure of the bottle blowing machine and effectively reducing the manufacturing cost of the machine.
Description
[ technical field ] A
The present invention relates to a mold opening and closing device for a blow molding machine, and more particularly, to a mold opening and closing device for a blow molding machine, which has a simple structure and precise mold opening and closing operation.
[ background of the invention ]
Plastic containers such as pet bottles are usually made by molding. The molding process includes setting the blank inside the mold cavity of two corresponding mold halves, closing the mold halves with the mold opening and closing mechanism, molding the blank into product in the shape corresponding to the mold cavity, opening the mold opening and closing mechanism, and taking out the molded product.
Since the molding of the blank is usually accomplished by means of pressure variation, and the pressure will generate a force to push the two mold halves open, the mold opening and closing mechanism will also have the effect of mold closing or mold locking.
For example, taiwan patent publication No. 381539, a new type of mold closing device for hollow forming mold, includes two fixed mold bases, a plurality of guide rods disposed between the two fixed mold bases, two sliding mold bases slidably disposed on the guide rods, two side mold blocks disposed between the two sliding mold bases, and a locking device disposed between the fixed mold bases and the sliding mold bases, wherein the locking device includes a toggle device and a driving device for driving the toggle device, and the driving device can be a pneumatic cylinder or an oil cylinder to drive the sliding mold bases to close or open the two side mold blocks.
The mold closing device described above uses a pneumatic cylinder or an oil cylinder as a power source, and the pneumatic cylinder or the oil cylinder as the power source has the advantage of faster operation response, but has the following problems: firstly, the action positioning of the pneumatic cylinder or the oil hydraulic cylinder is not accurate, vibration is easily generated along with the action positioning, the effect of die assembly is influenced by the inaccurate positioning, and defective products are easily generated; the vibration of the opening and closing mold may affect the accuracy of the related actions in the molding process; furthermore, the use of pneumatic or hydraulic cylinders requires additional pressure pumps and storage containers, which is likely to cause energy waste.
In order to improve these problems, the industry uses an all-electric power source (such as a servo motor) to replace a pneumatic cylinder or an oil cylinder, for example, taiwan patent publication No. M257273 "a driving device for opening and closing a control mold of a plastic molding machine" is a new patent, in which four guide rods extend from a machine base, an outer mold base and an inner mold base penetrate through each guide rod, a servo motor is disposed at one side of the machine base, the servo motor drives a lead screw through a timing belt set, the lead screw is screwed with a moving base, the moving base is connected with the machine base and the inner mold base through a plurality of connecting rods, and the opening and closing of the mold can be controlled by controlling the servo motor to move the moving base.
The above-mentioned new patent of the driving device for controlling mold opening and closing of plastic molding machine employs the structure design that the servo motor drives the lead screw via the timing belt set to control the mold opening and closing, so as to achieve the effect of precisely controlling the mold opening and closing position without generating unnecessary vibration. However, the transmission mode that the servo motor drives the lead screw through the timing belt group can generate a considerable speed reduction ratio, which makes the opening and closing action slower, and although the lead screw has the advantage of accurate positioning, the lead screw is not tolerant to the axial stress, which in turn makes the service life of the lead screw worse.
In blow molding machines for producing plastic containers, the number of mold opening and closing operations in the prior art may be as high as 15 to 20 per minute, in other words, the time from inserting a blank, closing the mold, and blow molding to opening the mold and removing the product is only about 3 to 4 seconds, so that the time for opening and closing the mold for the blow molding machine must be less than 1 second, the structure for opening and closing the mold by driving the lead screw by the servo motor through the timing belt set is difficult to meet the use requirements of the blow molding machine, and thus the driving device for opening and closing the mold is necessary to be improved for the blow molding machine.
In contrast, some manufacturers have developed a mechanism for rapidly and accurately opening and closing a mold, such as the mold opening and closing device of the blow molding machine disclosed in taiwan patent publication No. M333294, in which two base bodies are disposed on the blow molding machine, two movable bases are slidably disposed between the two base bodies, a mold half is disposed between each movable base and the other movable base, a link mechanism is disposed between each movable base and the corresponding base body, the link mechanism is driven by a driving mechanism, the driving mechanism is driven by a servo motor to drive a rotating arm, and the link mechanism is driven by a link set to rapidly and accurately open and close the mold.
However, in the above patents, only the mold opening and closing device for opening and closing the two mold halves is disclosed, but for the blow molded pet bottle, the mold is usually composed of two mold halves and a bottom mold, and the above patent technologies only disclose the technique for opening and closing the two mold halves, and the bottom mold is usually driven by another pneumatic/hydraulic cylinder, so the design cannot meet the full-electric requirement, and the actions of the bottom mold driven by the pneumatic/hydraulic cylinder and the electrically driven two mold halves are not easy to be performed synchronously, which affects the actuation time of the entire mold opening and closing device, and further affects the operation efficiency of the blow molding machine.
[ summary of the invention ]
The invention aims to solve the technical problem of providing a mold opening and closing device of a blow molding machine, which has a simple structure.
The invention is realized by the following steps:
a mold opening and closing device of a blow molding machine comprises a forming mold plate seat, two inner mold plates, two mold locking devices, a bottom mold seat, a cam device and a driving mechanism;
the forming template base is used for erecting the two inner templates, the two mold locking devices and the bottom mould base between the two inner templates;
the driving mechanism is connected with the cam device, the cam device is connected with the two inner templates, the two mold locking devices and the bottom mold base, the two inner templates and the two mold locking devices can reciprocate back and forth, and the bottom mold base is driven to move up and down to synchronously open and close the molds.
Furthermore, the cam device comprises a horizontal cam plate and two vertical cam plates;
the horizontal cam plate is fixedly connected with the two vertical cam plates;
a linear hollow groove is formed in the horizontal cam plate between the two vertical cam plates; a plurality of first curve hollow grooves are symmetrically formed in two sides of the linear hollow groove in the horizontal cam plate;
the two vertical cam plates are respectively provided with a second curve hollow groove;
the two inner templates and the two mold locking devices are respectively provided with a first driven piece, and the first driven pieces are sleeved in first curve hollow grooves on the horizontal cam plate;
a second driven piece is arranged on the bottom die holder and extends into a second curve hollow groove on the vertical cam plate through the linear hollow groove on the horizontal cam plate;
the driving mechanism drives the cam device to move in the horizontal direction, so that the two inner templates and the two mold locking devices are driven to reciprocate in the horizontal direction, and meanwhile, the bottom mold base is driven to move up and down to synchronously open and close the molds.
The cam conversion plate is provided with a first curved hollow groove and a second curved hollow groove; the two cam conversion plates are fixedly connected to the horizontal cam plate; the third curved hollow groove is matched with the first curved hollow groove, so that the motion trail of a first driven piece sleeved in the first curved groove is changed, and the opening and closing actions of the two inner templates and the mold locking actions of the two mold locking devices are realized.
Furthermore, the inner template comprises a half-mold cavity plate, and a plurality of half mold cavities are arranged on one surface of the half-mold cavity plate side by side; a plurality of toothed plates are arranged on the other surface of the half-die cavity plate side by side;
the mold locking device comprises a top plate, and a plurality of toothed plates are arranged on the top plate side by side;
and a toothed plate of the inner template is matched with a toothed plate of the mold locking device.
Furthermore, the forming template base comprises a frame and a base; the base is arranged below the frame; the two inner templates, the two mold locking devices and the bottom mold base are arranged in the frame; the cam device is arranged at the bottom of the frame; the driving mechanism is arranged in the base.
The invention has the advantages that: the bottom die and the two inner templates can synchronously open and close the die by the driving of a servo motor, and then the two half dies and the bottom die of the blow molding machine can be quickly and accurately opened and closed. The invention simplifies the forming structure of the bottle blowing machine and effectively reduces the manufacturing cost of the machine station on the premise of ensuring the running speed of the machine station.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a forming die plate base of the present invention.
Fig. 3 is a schematic diagram of the inner mold plate structure of the present invention.
FIG. 4 is a schematic view of the structure of the mold clamping apparatus of the present invention.
Fig. 5 is a schematic structural view of the cam device of the present invention.
Fig. 6 is a schematic structural view of the bottom die base of the present invention.
Fig. 7 is a schematic view of the structure of the drive mechanism of the present invention.
Fig. 8 is a schematic structural view of the cam conversion plate of the present invention.
[ detailed description ] embodiments
As shown in fig. 1, a mold opening and closing device of a blow molding machine includes a forming mold plate base 10, two inner mold plates 20, two mold locking devices 30, a base mold base 40, a cam device 50, and a driving mechanism 60.
As shown in fig. 2, the die plate base 10 is used for erecting two inner die plates 20 located at both sides, two mold clamping devices 30, and a die base 40 located between the two inner die plates 20. Comprises a frame 11, a base 12; the base 12 is arranged below the frame 11; two inner formworks 20, two mold locking devices 30 and a bottom mold base 40 are arranged in the frame 11; the bottom of the frame 11 is provided with a cam device 50; a drive mechanism 60 is disposed within base 12.
The driving mechanism 60 is connected with the cam device 50, the cam device 50 is connected with the two inner formworks 20, the two mold locking devices 30 and the bottom mold base 40, so that the front and back reciprocating movement of the two inner formworks 20 and the two mold locking devices 30 is realized, and meanwhile, the bottom mold base 40 is driven to move up and down to synchronously open and close the molds.
As shown in fig. 3, the inner mold plate 20 includes a mold half cavity plate 21, and a plurality of mold half cavities 22 are arranged side by side on one side of the mold half cavity plate 21; the other side of the half-mold cavity plate 21 is provided with a plurality of toothed plates 23 side by side. The bottom of the inner form 20 is provided with a first follower 24.
As shown in fig. 4, the mold clamping device 30 includes a top plate 31, and a plurality of toothed plates 32 are disposed on the top plate 31 side by side. The bottom of the mold clamping device 30 is provided with a first follower 33.
The toothed plate 23 of the inner mold plate 20 is fitted with the toothed plate 32 of the mold clamping unit 30. When the two inner formworks 20 are closed, the toothed plate 32 of the mold locking device 30 is abutted against the toothed plate 23 of the inner formworks 20, and the mold locking device 30 applies pressure to the inner formworks 20; when the two inner formworks 20 are opened, the toothed plate 32 of the mold locking device 30 is staggered with the toothed plate 23 of the inner formworks 20.
As shown in fig. 5, the cam device 50 includes a horizontal cam plate 51 and two vertical cam plates 52.
The horizontal cam plate 51 is fixedly connected with the two vertical cam plates 52.
A straight hollow groove 511 is arranged on the horizontal cam plate 51 between the two vertical cam plates 52; a plurality of first curved hollow-out grooves 512 are symmetrically arranged on both sides of the linear hollow-out groove 511 on the horizontal cam plate 51.
The two vertical cam plates 52 are respectively provided with a second curved hollow-out groove 521.
The first followers 24 of the two inner formworks 20 and the first followers 33 of the two mold locking devices 30 are respectively sleeved in the first curved hollow-out grooves 512 of the horizontal cam plate 51.
As shown in fig. 6, the bottom die holder 40 is provided with a second follower 41, and the second follower 41 passes through the linear hollow slot 511 of the horizontal cam plate 51 and extends into the second curved hollow slot 521 of the vertical cam plate 52.
As shown in fig. 7, the driving mechanism 60 is a servo motor, which drives the cam device 50 to move horizontally, and the first follower 24 of the inner formworks 20 and the first followers 33 of the two mold clamping devices 30 are respectively sleeved in the first curved hollow-out grooves 512 on the horizontal cam plate 51, so that the two inner formworks perform mold opening and closing back and forth reciprocating movement.
As shown in fig. 8, the cam conversion plate further includes two cam conversion plates 70, and a third curved hollow groove 71 is respectively disposed on each of the two cam conversion plates 70; two cam conversion plates 70 are fixedly connected to the horizontal cam plate 51; the third curved hollow-out groove 71 is matched with the first curved hollow-out grooves 512 located on the two outer sides, so that the motion track of the first driven member 24 sleeved in the first curved hollow-out grooves 512 located on the two outer sides is changed, the first driven member 24 located on the two inner sides drives the two inner templates to open and close, and the first driven member 24 located on the two outer sides drives the mold locking device 30 to lock the mold.
The invention has the advantages that: the bottom die and the two half dies can synchronously open and close the die by the driving of a servo motor, so that the two half dies and the bottom die of the blow molding machine can be quickly and accurately opened and closed. The invention simplifies the forming structure of the bottle blowing machine and effectively reduces the manufacturing cost of the machine station on the premise of ensuring the running speed of the machine station.
The above description is only an example of the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a mould device that opens and shuts of blowing machine which characterized in that: comprises a forming template seat, two inner templates, two mould locking devices, a bottom mould seat, a cam device and a driving mechanism;
the forming template base is used for erecting the two inner templates, the two mold locking devices and the bottom mould base between the two inner templates;
the driving mechanism is connected with the cam device, the cam device is connected with the two inner templates, the two mold locking devices and the bottom mold base, the two inner templates and the two mold locking devices can reciprocate back and forth, and the bottom mold base is driven to move up and down to synchronously open and close the molds;
the cam device comprises a horizontal cam plate and two vertical cam plates;
the horizontal cam plate is fixedly connected with the two vertical cam plates;
a straight hollow groove is formed in the horizontal cam plate between the two vertical cam plates; a plurality of first curve hollow grooves are symmetrically formed in two sides of the linear hollow groove in the horizontal cam plate;
the two vertical cam plates are respectively provided with a second curve hollow groove;
the two inner templates and the two mold locking devices are respectively provided with a first driven piece, and the first driven pieces are sleeved in first curve hollow grooves on the horizontal cam plate;
a second driven piece is arranged on the bottom die holder and extends into a second curve hollowed-out groove on the vertical cam plate through the linear hollowed-out groove on the horizontal cam plate;
the driving mechanism drives the cam device to move in the horizontal direction, so that the two inner templates and the two mold locking devices are driven to reciprocate in the horizontal direction, and meanwhile, the bottom mold base is driven to move up and down to synchronously open and close the molds;
the cam conversion plate is provided with a first curved hollow groove; the two cam conversion plates are fixedly connected to the horizontal cam plate; the third curved hollow groove is matched with the first curved hollow groove, so that the motion track of a first driven piece sleeved in the first curved groove is changed, and the opening and closing actions of the two inner templates and the mold locking actions of the two mold locking devices are realized;
the inner template comprises a half-mold cavity plate, and a plurality of half-mold cavities are arranged on one surface of the half-mold cavity plate side by side; a plurality of toothed plates are arranged on the other surface of the half-die cavity plate side by side;
the mold locking device comprises a top plate, and a plurality of toothed plates are arranged on the top plate side by side;
and the toothed plate of the inner template is matched with the toothed plate of the mold locking device.
2. The mold opening and closing device for a blow molding machine according to claim 1, wherein: the forming template seat comprises a frame and a base; the base is arranged below the frame; the two inner templates, the two mold locking devices and the bottom mold base are arranged in the frame; the cam device is arranged at the bottom of the frame; the driving mechanism is arranged in the base.
3. The mold opening and closing device of a blow molding machine according to claim 1, wherein: the driving mechanism is a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418254.9A CN107009600B (en) | 2017-06-06 | 2017-06-06 | Mould opening and closing device of blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418254.9A CN107009600B (en) | 2017-06-06 | 2017-06-06 | Mould opening and closing device of blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107009600A CN107009600A (en) | 2017-08-04 |
| CN107009600B true CN107009600B (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710418254.9A Active CN107009600B (en) | 2017-06-06 | 2017-06-06 | Mould opening and closing device of blow molding machine |
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| Country | Link |
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| CN (1) | CN107009600B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058365A (en) * | 2017-11-22 | 2018-05-22 | 张家港羽成机械有限公司 | A kind of rotation core clamping mechanism |
| CN107839196B (en) * | 2017-11-24 | 2024-05-14 | 全冠(福建)机械工业有限公司 | Forming, opening and closing device of bottle blowing machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201175989Y (en) * | 2008-02-28 | 2009-01-07 | 铨宝工业股份有限公司 | Mould open/close device of blow molding machine |
| CN201175990Y (en) * | 2008-03-21 | 2009-01-07 | 铨宝工业股份有限公司 | Mould open/close device of blow molding machine |
| CN201597178U (en) * | 2010-01-21 | 2010-10-06 | 铨宝工业股份有限公司 | Device for disassembling and assembling mold of blow molding machine |
| CN201669885U (en) * | 2010-04-20 | 2010-12-15 | 铨宝工业股份有限公司 | Opening die device of blow molding machine |
| CN103171132A (en) * | 2013-03-19 | 2013-06-26 | 江苏新美星包装机械股份有限公司 | Link mechanism for opening and closing die and positioning bottom die by single shaft |
| CN103171126A (en) * | 2013-03-19 | 2013-06-26 | 江苏新美星包装机械股份有限公司 | Bottle blowing machine |
| CN205380865U (en) * | 2016-02-16 | 2016-07-13 | 广州市日博塑料包装机械有限公司 | Die block locking mechanism that links for bottle blowing machine |
-
2017
- 2017-06-06 CN CN201710418254.9A patent/CN107009600B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201175989Y (en) * | 2008-02-28 | 2009-01-07 | 铨宝工业股份有限公司 | Mould open/close device of blow molding machine |
| CN201175990Y (en) * | 2008-03-21 | 2009-01-07 | 铨宝工业股份有限公司 | Mould open/close device of blow molding machine |
| CN201597178U (en) * | 2010-01-21 | 2010-10-06 | 铨宝工业股份有限公司 | Device for disassembling and assembling mold of blow molding machine |
| CN201669885U (en) * | 2010-04-20 | 2010-12-15 | 铨宝工业股份有限公司 | Opening die device of blow molding machine |
| CN103171132A (en) * | 2013-03-19 | 2013-06-26 | 江苏新美星包装机械股份有限公司 | Link mechanism for opening and closing die and positioning bottom die by single shaft |
| CN103171126A (en) * | 2013-03-19 | 2013-06-26 | 江苏新美星包装机械股份有限公司 | Bottle blowing machine |
| CN205380865U (en) * | 2016-02-16 | 2016-07-13 | 广州市日博塑料包装机械有限公司 | Die block locking mechanism that links for bottle blowing machine |
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| CN107009600A (en) | 2017-08-04 |
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