CN104527003B - Mold closing mechanism based on two-plate injection machine - Google Patents
Mold closing mechanism based on two-plate injection machine Download PDFInfo
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- CN104527003B CN104527003B CN201410827710.1A CN201410827710A CN104527003B CN 104527003 B CN104527003 B CN 104527003B CN 201410827710 A CN201410827710 A CN 201410827710A CN 104527003 B CN104527003 B CN 104527003B
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- pull bar
- nut
- plate
- bull gear
- front nut
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Classifications
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
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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 kind of mold closing mechanism based on two-plate injection machine, including solid plate (1), moving die plate (2), pull bar (3) and mould shifting oil cylinder (4), described solid plate (1) is arranged on one end of pull bar (3), and moving die plate (2) is sheathed on pull bar (3) other end；Injection machine matched molds apparatus also includes front nut (5), back nut (6), the actuating unit that bull gear (7) and driving bull gear (7) rotate, front nut (5) corresponds with pull bar (3), described pull bar (3) is provided with the external screw thread coordinated with back nut, back nut (6) is also corresponded and is fixedly connected on moving die plate (2) with pull bar (3), front nut (5) outer rim is arranged to gear-like, described bull gear (7) engages with each front nut (5), bull gear drives front nut to rotate under the driving of actuating unit.The present invention reduces the energy consumption of locked mode by using the self-locking between mechanism without using Mode-locking oil cylinder.
Description
Technical field
The present invention relates to injection machine field, specifically a kind of mold closing mechanism based on two-plate injection machine.
Background technology
The mould-matching structure of existing two-plate injection machine, mainly there are two kinds of hydraulic direct locking-type and combined type.Wherein, hydraulic direct locking
Formula workflow is mainly：Moved first by rapid mould-moving oil cylinder pushing moving platen, then by band-type brake structure by Draw bar lock
Extremely, then by Mode-locking oil cylinder by mold-locked, the hydraulic direct locking-type has an automatic mold-adjustment function, but the hydraulic pressure system required for it
Unite relative complex, reliability is poor, and space-consuming size compares three-plate type injection machine also no particularly apparent advantage, especially
For clamp force, it is necessary to four very big oil cylinders, power is big when larger, and during locked mode and pressurize is to need to consume larger energy
Amount.Typical combined type, then mainly drive moving platen quickly to move by being fixed on Quick cylinder in quiet template, mould is closed
Close, specifically, between moving platen and pull bar be relatively fixed by positioning and locking device, pull bar is then pulled by Mode-locking oil cylinder
By mold-locked.In combined type, mode transfer structure is generally divided into following two：First, fine adjustment pull bar is passed through in Mode-locking oil cylinder
Position, pull bar tooth top is set to agree with, position and then lock pull bar with entering the root position of lock nut；2nd, the engines such as motor are passed through
Structure, which is adjusted, into lock nut location, makes pull bar agree with, position and then lock pull bar with entering the position of lock nut.Both mode transfer structures
In, four pull bars or enter lock nut and be required for increasing single power set, while oil piping system complicates, and adds quite big
Cost, be poorly suitable for middle-size and small-size two-plate injection machine.
The content of the invention
In view of this, the invention provides a kind of mold closing mechanism based on two-plate injection machine, deposited with solving prior art
Hydraulic system is complicated, technical problem of high energy consumption, propose the low mould-locking structure of energy consumption to solve above-mentioned technical problem.
The technical solution of the present invention is to provide a kind of mold closing mechanism based on two-plate injection machine of following structure,
Including solid plate, moving die plate, pull bar and mould shifting oil cylinder, described solid plate is arranged on one end of pull bar, described mobile mould
Sleeve-board is located at the other end of pull bar, and the piston end of the mould shifting oil cylinder is connected with moving die plate to drive its movement；
Described injection machine matched molds apparatus also includes the dynamic of front nut, back nut, bull gear and driving bull gear rotation
Force mechanisms, described front nut correspond with pull bar, keyway are equipped with pull bar and front nut, between pull bar and front nut
For key connection, described pull bar is provided with the external screw thread coordinated with back nut, and described back nut also corresponds simultaneously with pull bar
Be fixedly connected on moving die plate, be combined on pull bar, the outer rim of front nut is arranged to gear-like, described bull gear respectively with
Each front nut engagement, bull gear drive front nut to rotate under the driving of actuating unit.
Using above structure, the present invention compared with prior art, has advantages below：, can during open mold using the present invention
To carry out shifting formwork to moving die plate by mould shifting oil cylinder, and bull gear is driven to rotate by drive mechanism, through bull gear torque
The torque transmitting of amplification and key acts on, and drives front nut and pull bar to rotate together, because back nut is fixed on moving die plate
On, its own can not be rotated, therefore the linear motion being translated on pull bar, so as to realize locked mode, utilize the self-locking of screw thread
Function realizes locked mode, and without multiple Mode-locking oil cylinders, hydraulic system is simple, and locked mode is reduced by using the self-locking between mechanism
Energy consumption.
Preferably, external screw thread on the pull bar is two parts screw thread of distribution of being centrosymmetric in pull bar circumference,
It is unthreaded sections between two parts screw thread, unthreaded sections are annular polished rod structure, and the diameter of annular polished rod structure is less than
Bottom diameter, the respective threaded that described back nut is provided with two parts screw thread is engaged on pull bar.Using the structure, it is necessary to lock
During mould, by screw thread engage caused by engagement force clamp force is provided, when needing rapid mould-moving, due to being partial threads knot
It structure, can be disengaged between back nut and pull bar, smoothly rapid mould-moving can be moved by mould shifting oil cylinder.
Preferably, being arranged with spring on pull bar between front nut and solid plate, accommodating bullet is provided with solid plate
The spring cavity of spring, be provided with a shaft shoulder close to solid plate end on pull bar, offer annular groove on the shaft shoulder, it is accommodating in described annular groove
There is T-shaped block, one end of spring is fixed in T-shaped block, and the other end is withstood on solid plate.The spring coefficient of stiffiness is larger, can produce compared with
Big spring force so that pull bar is deformed, and the screw thread of pull bar produces interference with back nut screw thread when avoiding engaging next time.
Preferably, offering locating slot in the upward unthreaded sections of pull rod shaft, described back nut, which is provided with, to be used for
The displacement transducer of detection positioning groove location.The position of locating slot is detected by displacement transducer, so as to judge back nut with drawing
Whether bar engages, and to send open mold signal, acts mould shifting oil cylinder.
Brief description of the drawings
Fig. 1 is the axis side view of the mold closing mechanism of the invention based on two-plate injection machine；
Fig. 2 is the front view of the mold closing mechanism of the invention based on two-plate injection machine；
Fig. 3 is Fig. 2 right view；
Fig. 4 is Fig. 2 left view；
Fig. 5 is the structural representation of pull bar；
Fig. 6 is Fig. 5 right view.
As illustrated, 1, solid plate, 2, moving die plate, 3, pull bar, 4, mould shifting oil cylinder, 5, front nut, 6, back nut, 7, big
Gear ring, 8, spring, 9, spring cavity, 10, the shaft shoulder, 11, annular groove, 12, T-shaped block, 13, locating slot, 14, displacement transducer, 15,
Key, 16, controller, 17, keyway.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but the present invention is not restricted to these
Embodiment.
The present invention covers any replacement, modification, equivalent method and scheme made in the spirit and scope of the present invention.For
Make the public have the present invention thoroughly to understand, concrete details is described in detail in present invention below preferred embodiment, and
Description without these details can also understand the present invention completely for a person skilled in the art.In addition, the accompanying drawing of the present invention
In for the needs of signal, be not drawn to scale accurately, be explained herein completely.
As Figure 1-5, a kind of two-plate injection machine matched molds apparatus involved in the present invention, including solid plate 1, mobile mould
Plate 2, pull bar 3 and mould shifting oil cylinder 4, described solid plate 1 are arranged on one end of pull bar 3, and described moving die plate 2 is sheathed on pull bar
3 other end, the piston end of the mould shifting oil cylinder 4 are connected with moving die plate 2 to drive its movement；
Described injection machine matched molds apparatus also includes front nut 5, back nut 6, bull gear 7 and driving bull gear 7 and rotated
Actuating unit, described front nut 5 corresponded with pull bar 3, and keyway 17, pull bar 3 are equipped with pull bar 3 and front nut 5
It is connected between front nut 5 for key 15, described pull bar 3 is provided with the external screw thread coordinated with back nut 6, described back nut 6
Also correspond and be fixedly connected on moving die plate 2 with pull bar 3, be combined on pull bar 3, the outer rim of front nut 5 is arranged to tooth
Colyliform, described bull gear 7 engage with each front nut 5 respectively, and bull gear 7 drives front nut 5 under the driving of actuating unit
Rotate.
The basic solution for solving the technical problem of the present invention is formed above.Such scheme is further limited：
Pull bar is fixed on solid plate by described front nut.The quantity of pull bar 3 is consistent with prior art, is four.Described is big
The installation of gear ring can be accomplished by the following way：One disk is installed i.e. on solid plate 1, described bull gear 7 is arranged on
Disk outer rim, it is rotatably connected provided with steel ball, bull gear 7 with disk therebetween, just as the structure of bearing；Also can be by fixed
Multiple bearing columns according to circumferential arrangement are set in template, and described bull gear is sheathed in bearing column, and bearing column both can be right
It, which is positioned, can also allow its smooth rotation.Though the structure of above example is not illustrated in figure, those of ordinary skill in the art's root
It is understood that and implements according to foregoing description.
Described actuating unit is hydraulic motor and the little gear engaged with bull gear, and hydraulic motor work drives small tooth
Wheel, little gear driving bull gear are rotated to drive front nut to rotate, so that pull bar rotates, back nut by moving die plate because being consolidated
It is fixed, therefore the linear motion on pull bar will be converted into, to realize matched moulds.
External screw thread on the pull bar 3 is two parts screw thread of distribution of being centrosymmetric in the circumference of pull bar 3, in two parts
It is unthreaded sections between screw thread, unthreaded sections are annular polished rod structure, and the diameter of annular polished rod structure is less than bottom diameter,
The respective threaded that described back nut 6 is provided with two parts screw thread is engaged on pull bar 3.Based on said structure, it is necessary to during locked mode,
By screw thread engage caused by engagement force clamp force is provided, when needing rapid mould-moving, due to being partial thread formation, after
(i.e. annular polished rod structure of the screw thread of back nut against pull bar) can be disengaged between nut and pull bar, can by mould shifting oil cylinder
Smooth rapid mould-moving motion.50 ° -60 ° of the unilateral angle of a portion screw thread in two parts screw thread of pull bar, unthreaded sections
For annular polished rod structure, unilateral annular angle is 120 ° -130 °；Described back nut also makes partial threads shape, the angle of thread
50 ° -60 °, unthreaded sections angle is 120 ° -130 °.
Spring 8 is arranged with pull bar 3 between front nut 5 and solid plate 1, provided with putting spring 8 on solid plate 1
Spring cavity 9, a shaft shoulder 10 is provided with close to the end of solid plate 1 on pull bar 3, annular groove 11, described annular groove are offered on the shaft shoulder 10
T-shaped block 12 is equipped with 11, one end of spring 8 is fixed in T-shaped block 12, and the other end is withstood on solid plate 1.Driven in actuating unit
In the case of dynamic front nut, front nut drives pull bar to rotate, and due to the design of T-shaped block, spring understands concomitant rotation, and in self-locking knot
Shu Hou, during die sinking, the effect of spring can prevent harmful rotation of pull bar, therefore use the larger spring of the coefficient of stiffiness, produce compared with
Big spring force so that pull bar is deformed, and the screw thread of pull bar produces interference with back nut screw thread when avoiding engaging next time.
Keyway is equipped with pull bar 3 and front nut 5, is key connection between pull bar 3 and front nut 5., can by key connection
Smoothly realize drives pull bar to rotate by front nut.In order to increase moment of torsion, keyway can open up into spline, and key selection is spline.
Unthreaded sections on the axial direction of pull bar 3 offer locating slot 13, and described back nut 6, which is provided with to be used to detect, to be determined
The displacement transducer 14 of the position position of groove 13.The chord length of locating slot is 10-20mm, depth 5-8mm；Detected by displacement transducer
The position of locating slot, so as to judge whether back nut engages with pull bar, to send open mold signal, transmit a signal to control
Device, acted accordingly by controller control mould shifting oil cylinder.
Pull rod screw and back nut thread surface all use intensive treatment, to improve its intensity, hardness and wearability, together
When, pull bar and nut use the different material of hardness such as steel and bronze.For increasing friction force, self-locking property, spiral shell are improved
Line lift angle takes 15-20 °.
Based on above-mentioned two-plate injection machine matched molds apparatus, a kind of open mold side of two-plate injection machine matched molds apparatus can be formed
Method, comprise the following steps：
Matched moulds process：Mould shifting oil cylinder pulls moving die plate to be moved to oil cylinder stroke to solid plate direction and completes to stop, engine
Structure is started working, and drives bull gear to rotate, and bull gear, which rotates, drives front nut to rotate, and front nut drives pull bar to rotate, and pull bar turns
It is dynamic pull rod screw is engaged with back nut screw thread, back nut is moved axially in pull bar, until complete matched moulds, pull bar deformation to lock
Mould power required value.During this, the auto-lock function that locked mode fully relies on the screw thread between pull bar and back nut is realized, mould assembling action
Complete；
Die sinking process：After part cooling, actuating unit drives bull gear reversion, and bull gear drives front nut to rotate, preceding spiral shell
Master tape moves pull bar and rotated, and pull bar, which rotates, makes pull bar be disengaged from engagement status with back nut, when turning to fully unmated state, shifting formwork
Oil cylinder is started working, and is promoted moving die plate to be moved to mould shifting oil cylinder stroke to the opposite direction of front template and is completed to stop, die sinking is completed.
During matched moulds, actuating unit, which is started working, to be referred to, hydraulic motor drives little gear to rotate forward to drive bull gear to turn
It is dynamic；During die sinking, actuating unit drives bull gear reversion to refer to, hydraulic motor drives little gear reversion to drive bull gear to turn
It is dynamic.
During die sinking, fully unmated state refers to, the position of locating slot is detected by displacement transducer, so as to judge
Engagement has disengaged, and now, displacement transducer will feed back signal to controller, and controller sends the signal of cut-out hydraulic motor oil circuit
(even if actuating unit break-off).
Only preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This
Invention is not only limited to above example, and its concrete structure allows to change.In a word, all guarantors in independent claims of the present invention
The various change made in the range of shield is within the scope of the present invention.
Claims (1)
1. a kind of mold closing mechanism based on two-plate injection machine, including solid plate (1), moving die plate (2), pull bar (3) and shifting formwork
Oil cylinder (4), described solid plate (1) are arranged on one end of pull bar (3), and described moving die plate (2) is sheathed on the another of pull bar (3)
One end, the piston end of the mould shifting oil cylinder (4) are connected with moving die plate (2) to drive its movement；It is characterized in that：Described conjunction
Die device also includes the actuating unit that front nut (5), back nut (6), bull gear (7) and driving bull gear (7) rotate, described
Front nut (5) and pull bar (3) correspond, be equipped with keyway (17) on pull bar (3) and front nut (5), pull bar (3) and before
Connected between nut (5) for key (15), described pull bar (3) is provided with the external screw thread coordinated with back nut (6), described rear spiral shell
Female (6) also correspond and are fixedly connected on moving die plate (2) with pull bar (3), are combined on pull bar (3), front nut (5)
Outer rim is arranged to gear-like, and described bull gear (7) engages with each front nut (5) respectively, and bull gear (7) is in actuating unit
Driving is lower to drive front nut (5) to rotate, and the external screw thread on the pull bar (3) is the distribution that is centrosymmetric in pull bar (3) circumference
Two parts screw thread, be unthreaded sections between two parts screw thread, unthreaded sections are annular polished rod structure, annular polished rod knot
The diameter of structure is less than bottom diameter, the corresponding spiral shell that described back nut (6) is provided with to two parts screw thread is engaged on pull bar (3)
Line, spring (8) is arranged with the pull bar (3) between front nut (5) and solid plate (1), accommodating bullet is provided with solid plate (1)
The spring cavity (9) of spring (8), a shaft shoulder (10) is provided with close to solid plate (1) end on pull bar (3), the shaft shoulder offers annular on (10)
Groove (11), described annular groove (11) is interior to be equipped with T-shaped block (12), and one end of spring (8) is fixed in T-shaped block (12), another
End is withstood on solid plate (1), and the unthreaded sections on pull bar (3) axial direction offer locating slot (13), described back nut (6)
It is provided with the displacement transducer (14) for being used for detecting locating slot (13) position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827710.1A CN104527003B (en) | 2014-12-26 | 2014-12-26 | Mold closing mechanism based on two-plate injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827710.1A CN104527003B (en) | 2014-12-26 | 2014-12-26 | Mold closing mechanism based on two-plate injection machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104527003A CN104527003A (en) | 2015-04-22 |
| CN104527003B true CN104527003B (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410827710.1A Active CN104527003B (en) | 2014-12-26 | 2014-12-26 | Mold closing mechanism based on two-plate injection machine |
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| CN (1) | CN104527003B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2832494Y (en) * | 2005-07-11 | 2006-11-01 | 亿利达机器(深圳)有限公司 | Contracting brake type mode locking structure for plastic jetting-moulding machine |
| CN101774238B (en) * | 2009-12-10 | 2012-03-21 | 中山全立发机械有限公司 | Double-template mould-clamping mechanism |
| CN102837404B (en) * | 2012-09-06 | 2015-07-29 | 泰瑞机器股份有限公司 | Clamping Device of Injection Moulding Machine and mold clamping force balance adjusting method thereof |
| CN204526042U (en) * | 2014-12-26 | 2015-08-05 | 饶宾期 | A kind of mold closing mechanism based on two-plate injection machine |
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| Publication number | Publication date |
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| CN104527003A (en) | 2015-04-22 |
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| CB03 | Change of inventor or designer information |
Inventor after: Rao Binqi Inventor after: Wei Jianhong Inventor after: Pan Hongwei Inventor after: OUYANG HUABING Inventor after: Zhou Hongwei Inventor after: Niu Chuanyong Inventor before: Rao Binqi Inventor before: Pan Hongwei Inventor before: OUYANG HUABING Inventor before: Zhou Hongwei |
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| GR01 | Patent grant | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180110 Address after: 310018, No. 245, Wen Ze North Road, Xiasha street, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang Applicant after: TEDERIC Machinery Co.,Ltd. Address before: 315470 Zhejiang Province, Yuyao City Simen Town Guangming Road No. 126 Applicant before: Rao Binqi |