CN104369336A - Clamping force regulator of injection molding machine - Google Patents
Clamping force regulator of injection molding machine Download PDFInfo
- Publication number
- CN104369336A CN104369336A CN201410725904.0A CN201410725904A CN104369336A CN 104369336 A CN104369336 A CN 104369336A CN 201410725904 A CN201410725904 A CN 201410725904A CN 104369336 A CN104369336 A CN 104369336A
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- CN
- China
- Prior art keywords
- pull bar
- injection molding
- test rod
- molding machine
- installing hole
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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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
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/7653—Measuring, controlling or regulating mould clamping forces
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/76224—Closure or clamping unit
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76391—Mould clamping, compression of the cavity
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a clamping force regulator of an injection molding machine. The clamping force regulator allows clamping force of the injection molding machine to be precisely regulated. An injection molding machine controller controls a mold regulating mechanism and a clamping mechanism to perform forward mold regulation or backward mold regulation and mold clamping or mold opening, thus the clamping force is efficiently regulated. A pull bar strain detector detects strain of a pull bar of the injection molding machine in real time; detected analog quantity is converted into digital quantity by an analog-digital conversion module; the digital quantity is compared to a preset clamping force to perform mold regulation and mold clamping; the clamping force can be detected and regulated precisely.
Description
Technical field
The present invention relates to a kind of guiding mechanism of injection machine, be specifically related to a kind of plastic injection molding machine clamp force adjusting device.
Background technology
Mold clamping force is an important parameter of injection machine, the size of mold clamping force and repeatable accuracy will directly affect dimensional accuracy and the repeatable accuracy of goods, mold clamping force deficiency can cause mould cannot lock, flash occurs, but can die deformation be made again too greatly, mold damage, and make goods produce internal stress and unnecessary energy ezpenditure, therefore accurately mold clamping force to mould and goods precision all very important.
At present, the mould-matching structure of the most of injection machine on market remains traditional five-point type mechanical reaming type structure, mould-matching structure crank connecting rod Distribution of Institutions is in the both sides of template, by cranking arm, amplification provides mold clamping force, the advantage of this structure is that point-to-point speed is fast, mold clamping force amplification ratio is high, but still the adjustment of mold clamping force is carried out by rule of thumb by manual mode, and after being converted by the force value of Mode-locking oil cylinder and the amplification ratio of crank connecting rod mechanism, obtain theoretical mold clamping force, mold clamping force data not too accurately and reliably, also the accurate detection of mold clamping force cannot be reached, real-time display, automatic calibration.
Now, market there is the new injection machine of many moneys adopt direct pressure structure, the height of the ratio of precision five-point type mechanical reaming type structure of its mold clamping force, and actual mold clamping force is relevant with the decrement of fluid with the hydraulic pressure rigidity of Mode-locking oil cylinder, mold clamping force is still obtained by the force value of fluid in pressure sensor detection Mode-locking oil cylinder and the effective area of oil cylinder, therefore the data of mold clamping force are very inaccurate yet, more cannot realize accurately automatically controlling and adjustment of mold clamping force.
Therefore, how to solve the problem, become problem demanding prompt solution.
Summary of the invention
The technical issues that need to address of the present invention are just the defect overcoming prior art, a kind of plastic injection molding machine clamp force adjusting device is provided, it can the size of accurate adjustment plastic injection molding machine clamp force, mould adjusting mechanism can be controlled by controller of plastic injection molding and clamping carries out mode transfer advance or retrogressing, matched moulds or die sinking action, realize the efficient adjustment to mold clamping force; And in real time the adaptability to changes of injection machine pull bar is detected by pull bar adaptability to changes checkout gear, the analog quantity of detection is converted into digital quantity by analog-to-digital conversion module, and this digital quantity and the mold clamping force preset are compared thus carry out mode transfer, mould assembling action, the accurate Detection and adjustment to mold clamping force can be guaranteed.
For solving the problem, the present invention adopts following technical scheme:
A kind of plastic injection molding machine clamp force adjusting device, comprise injection machine body and the controller of plastic injection molding for controlling this body running of injection machine, be provided with central processing unit, analog-to-digital conversion module and data setting display in controller of plastic injection molding, injection machine body is provided with the clamping and mould adjusting mechanism that are controlled by controller of plastic injection molding; The male model for injection moulding and master mold is provided with between the moving platen of injection machine body and solid plate; The detection signal of strain transducer and displacement transducer is converted to data signal by analog to digital conversion circuit, data processing is carried out by controller of plastic injection molding, controller of plastic injection molding is according to the mold clamping force preset and displacement, by control clamping and mould adjusting mechanism, mode transfer and mould assembling action are carried out again to mould, guarantee the accurate Detection and adjustment to mold clamping force; Data setting display can pass through human interface's preset data.
Injection machine body is provided with the displacement transducer for detecting pull bar effective length, and one end of pull bar is connected on injection machine body; The other end of pull bar is fixedly connected with solid plate with pull bar pressing plate by pull-rod nut; Displacement transducer is connected with central processing unit by analog-to-digital conversion module; For the direct pressure structure of injection machine, the displacement transducer of pull bar can detect the die-closed position of mould, by detecting the effective length of pull bar, then according to the position of test rod, extrapolating deformation quantity and the tension force of pull bar, namely can draw mold clamping force size;
The end of the close solid plate of a pull bar of injection machine body is provided with pull bar adaptability to changes checkout gear; Pull bar adaptability to changes checkout gear comprises test rod and strain transducer; The axis of pull bar is provided with an installing hole, the enclose inside of installing hole, installing hole open-ended, and test rod is arranged in installing hole; Two ends of test rod are respectively inner and outer end, and the inner of test rod and the enclose inside end of installing hole are fitted, and the outer end of test rod passes pull bar and coordinates with the strain transducer on pull bar pressing plate.After pull bar is subject to tension force effect, there is deformation in it, relative change can be there is in the position of test rod, then the change in location of test rod is detected according to strain transducer, detection signal is transferred to central processing unit, the effective length of central processing unit according to pull bar and the change in location of test rod, extrapolate deformation quantity and the tension force of pull bar, namely draw the size of mold clamping force.Then according to preset value, mould adjusting mechanism and clamping are regulated and controled, thus make mold clamping force meet default requirement, guarantee job stability and the product quality of mould.
Preferably, the openend of installing hole is connected with pull bar by friction top, is provided with the spring being socketed on test rod circumferential exterior in the installing hole of friction top side, and test rod is provided with the packing ring coordinated with spring; Spring makes the inner of test rod and the enclose inside end of installing hole fit by tension force.Spring provides elastic force for test rod, ensures its accuracy detected.
Preferably, fit in the detection head of strain transducer and the outer end of test rod, the detection head of strain transducer and the dead in line of test rod.
Preferably, strain transducer is arranged on pull bar pressing plate by mounting bracket, and mounting bracket outside is provided with the protective cover for the protection of strain transducer.
Preferably, spring is tension spring.
Preferably, the length of test rod is 1/6 ~ 1/3 of pull bar length.Such length can guarantee the accuracy to pull bar shape changing detection.
The course of work of plastic injection molding machine clamp force adjusting device of the present invention is:
After the mould matched moulds of injection machine, after pull bar is subject to tension force effect, there is deformation in it, for there is change relatively in the position of test rod, then the change in location of test rod detected according to strain transducer, detection signal is transferred to central processing unit, the effective length of central processing unit according to pull bar and the change in location of test rod, extrapolate deformation quantity and the tension force of pull bar, namely draw the size of mold clamping force; Then according to preset value, mould adjusting mechanism and clamping are regulated and controled, thus make mold clamping force meet default requirement, guarantee job stability and the product quality of mould.
Advantage of the present invention and beneficial effect are:
Plastic injection molding machine clamp force adjusting device of the present invention, can the size of accurate adjustment plastic injection molding machine clamp force, by mould adjusting mechanism can be controlled at controller of plastic injection molding and clamping carries out mode transfer advance or retrogressing, matched moulds or die sinking action, realize the efficient adjustment to mold clamping force;
Plastic injection molding machine clamp force adjusting device of the present invention, in real time the adaptability to changes of injection machine pull bar is detected by pull bar adaptability to changes checkout gear, the analog quantity of detection is converted into digital quantity by analog-to-digital conversion module, and this digital quantity and the mold clamping force preset are compared thus carry out mode transfer, mould assembling action, can guarantee, to the accurate Detection and adjustment of mold clamping force, to guarantee the quality stability of injection molding machine product.
Accompanying drawing explanation
Fig. 1 is the module diagram of plastic injection molding machine clamp force adjusting device of the present invention.
Fig. 2 is the structural representation of plastic injection molding machine clamp force adjusting device of the present invention.
Fig. 3 is A parts partial enlarged drawing in Fig. 2.
Fig. 4 be plastic injection molding machine clamp force adjusting device of the present invention with injection machine body in conjunction with schematic diagram.
In figure: 1, injection machine body; 2, controller of plastic injection molding; 3, pull bar; 4, strain transducer; 5, displacement transducer; 1a, clamping; 1b, mould adjusting mechanism; 2a, central processing unit; 2b, data setting display; 2c, analog-to-digital conversion module.
10, moving platen; 11, test rod; 12, male model; 13, packing ring; 14, spring; 15, mounting bracket; 16, protective cover; 17, friction top; 18, master mold; 19, solid plate; 20, pull-rod nut; 21, pull bar pressing plate.
Detailed description of the invention
embodiment 1
As shown in Figure 1 to Figure 3, the present invention is a kind of plastic injection molding machine clamp force adjusting device, comprise injection machine body 1 and the controller of plastic injection molding 2 for controlling injection machine body 1 work, be provided with central processing unit 2a, analog-to-digital conversion module 2c and data setting display 2b in controller of plastic injection molding 2, injection machine body 1 is provided with the clamping 1a and mould adjusting mechanism 1b that are controlled by controller of plastic injection molding 2; Strain transducer 4 and the detection signal of displacement transducer 5 are converted to data signal by analog to digital conversion circuit, data processing is carried out by controller of plastic injection molding 2, controller of plastic injection molding 2 is according to the mold clamping force preset and displacement, by controlling clamping 1a and mould adjusting mechanism 1b, mode transfer and mould assembling action being carried out again to mould, guaranteeing the accurate Detection and adjustment to mold clamping force; Data setting display 2b can pass through human interface's preset data; The male model 12 for injection moulding and master mold 18 is provided with between the moving platen 10 of injection machine body 1 and solid plate 19;
Injection machine body 1 is provided with the displacement transducer 5 for detecting pull bar 3 effective length, and one end of pull bar 3 is connected on injection machine body 1, and the other end of pull bar 3 is fixed on the solid plate 19 of injection machine; The other end of pull bar 3 is fixedly connected with solid plate 19 with pull bar pressing plate 21 by pull-rod nut 20; ; Displacement transducer 5 is connected with central processing unit 2a by analog-to-digital conversion module 2c; For the direct pressure structure of injection machine, the displacement transducer 5 of pull bar 3 can detect the die-closed position of mould, by detecting the effective length of pull bar 3, then according to the position of test rod 11, extrapolate deformation quantity and the tension force of pull bar 3, namely can draw mold clamping force size;
The end of the close solid plate 19 of a pull bar 3 of injection machine body 1 is provided with pull bar adaptability to changes checkout gear; Pull bar adaptability to changes checkout gear comprises test rod 11 and strain transducer 4; The axis of pull bar 3 is provided with an installing hole, the enclose inside of installing hole, installing hole open-ended, and test rod 11 is arranged in installing hole; Two ends of test rod 11 are respectively inner and outer end, and the inner of test rod 11 and the enclose inside end of installing hole are fitted, and the outer end of test rod 11 passes pull bar 3 and coordinates with the strain transducer 4 on pull bar pressing plate 21.After pull bar 3 receives tension force effect, there is deformation in it, for there is change relatively in the position of test rod 11, then the change in location of test rod 11 is detected according to strain transducer 4, detection signal is transferred to central processing unit 2a, central processing unit 2a, according to the change in location of the effective length of pull bar 3 and test rod 11, extrapolates deformation quantity and the tension force of pull bar 3, namely draws the size of mold clamping force.Then according to preset value, mould adjusting mechanism 1b and clamping 1a is regulated and controled, thus make mold clamping force meet default requirement, guarantee job stability and the product quality of mould.
The openend of installing hole is connected with pull bar 3 by friction top 17, is provided with the spring 14 being socketed on test rod 11 circumferential exterior in the installing hole of friction top 17 side, and test rod 11 is provided with the packing ring 13 coordinated with spring 14; Spring 14 makes the inner of test rod 11 and the enclose inside end of installing hole fit by tension force.Spring 14 provides elastic force for test rod 11, ensures its accuracy detected.
Fit in the detection head of strain transducer 4 and the outer end of test rod 11, the detection head of strain transducer 4 and the dead in line of test rod 11.Strain transducer 4 is arranged on pull bar pressing plate 21 by mounting bracket 15, and mounting bracket 15 outside is provided with the protective cover 16 for the protection of strain transducer 4.Spring 14 is tension spring.The length of test rod 11 is 1/5 of pull bar 3 length.Such length can guarantee the accuracy to pull bar 3 shape changing detection.
Injection machine body in the present embodiment, controller of plastic injection molding, central processing unit, analog-to-digital conversion module, data setting display, clamping and mould adjusting mechanism; be existing mature technology; and the data preset function of data setting display, the central processing unit analyzing and processing to detection data is the technological means that those skilled in the art can realize according to prior art, therefore no longer describes in the present embodiment.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (6)
1. a plastic injection molding machine clamp force adjusting device, comprise injection machine body and the controller of plastic injection molding for controlling this body running of injection machine, central processing unit is provided with in controller of plastic injection molding, analog-to-digital conversion module and data setting display, injection machine body is provided with the clamping and mould adjusting mechanism that are controlled by controller of plastic injection molding, the male model for injection moulding and master mold is provided with between the moving platen of injection machine body and solid plate, it is characterized in that, injection machine body is provided with the displacement transducer for detecting pull bar effective length, one end of pull bar is connected on injection machine body, the other end of pull bar is fixedly connected with solid plate with pull bar pressing plate by pull-rod nut, displacement transducer is connected with central processing unit by analog-to-digital conversion module,
The end of the close solid plate of a pull bar of injection machine body is provided with pull bar adaptability to changes checkout gear; Pull bar adaptability to changes checkout gear comprises test rod and strain transducer; The axis of pull bar is provided with an installing hole, the enclose inside of installing hole, installing hole open-ended, and test rod is arranged in installing hole; Two ends of test rod are respectively inner and outer end, and the inner of test rod and the enclose inside end of installing hole are fitted, and the outer end of test rod passes pull bar and coordinates with the strain transducer on pull bar pressing plate.
2. plastic injection molding machine clamp force adjusting device as claimed in claim 1, it is characterized in that, the openend of installing hole is connected with pull bar by friction top, is provided with the spring being socketed on test rod circumferential exterior in the installing hole of friction top side, and test rod is provided with the packing ring coordinated with spring; Spring makes the inner of test rod and the enclose inside end of installing hole fit by tension force.
3. plastic injection molding machine clamp force adjusting device as claimed in claim 2, it is characterized in that, fit in the detection head of strain transducer and the outer end of test rod, the detection head of strain transducer and the dead in line of test rod.
4. plastic injection molding machine clamp force adjusting device as claimed in claim 3, it is characterized in that, strain transducer is arranged on pull bar pressing plate by mounting bracket, and mounting bracket outside is provided with the protective cover for the protection of strain transducer.
5. plastic injection molding machine clamp force adjusting device as claimed in claim 4, it is characterized in that, spring is tension spring.
6. plastic injection molding machine clamp force adjusting device as claimed in claim 5, it is characterized in that, the length of test rod is 1/6 ~ 1/3 of pull bar length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410725904.0A CN104369336A (en) | 2014-12-04 | 2014-12-04 | Clamping force regulator of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410725904.0A CN104369336A (en) | 2014-12-04 | 2014-12-04 | Clamping force regulator of injection molding machine |
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| CN104369336A true CN104369336A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410725904.0A Pending CN104369336A (en) | 2014-12-04 | 2014-12-04 | Clamping force regulator of injection molding machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500649A (en) * | 2015-12-31 | 2016-04-20 | 海天塑机集团有限公司 | Two-plate type injection molding machine pull rod self-correcting system |
| CN105538627A (en) * | 2016-02-05 | 2016-05-04 | 博创智能装备股份有限公司 | Mechanical hinge, direct pressing and mold locking component |
| CN106696165A (en) * | 2016-12-23 | 2017-05-24 | 宁波通用塑料机械制造有限公司 | Fully-electric injection molding machine |
| CN106735075A (en) * | 2016-12-30 | 2017-05-31 | 宁波海天金属成型设备有限公司 | A kind of die casting machine intelligent folding mould control method and control system |
| CN111948524A (en) * | 2020-09-18 | 2020-11-17 | 珠海市精实测控技术有限公司 | Elastic deformation adjusting device for middle frame plate of FCT (Flexible Circuit test) tester |
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| US4466477A (en) * | 1981-12-21 | 1984-08-21 | Prince Corporation | Die casting machine with strain gauge |
| JPH06297530A (en) * | 1993-02-17 | 1994-10-25 | Niigata Eng Co Ltd | Clamping force-measuring method for injection molding machine and its apparatus |
| CN101992532A (en) * | 2010-10-29 | 2011-03-30 | 华南理工大学 | System and method for automatically regulating clamping force of motor-driven injection molding machine |
| CN103640194A (en) * | 2013-12-26 | 2014-03-19 | 宁波恩瑞德机电科技有限公司 | Intelligent injection molding machine and injection molding method thereof |
| CN204263489U (en) * | 2014-12-04 | 2015-04-15 | 无锡格兰机械集团有限公司 | A kind of plastic injection molding machine clamp force adjusting device |
-
2014
- 2014-12-04 CN CN201410725904.0A patent/CN104369336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466477A (en) * | 1981-12-21 | 1984-08-21 | Prince Corporation | Die casting machine with strain gauge |
| JPH06297530A (en) * | 1993-02-17 | 1994-10-25 | Niigata Eng Co Ltd | Clamping force-measuring method for injection molding machine and its apparatus |
| CN101992532A (en) * | 2010-10-29 | 2011-03-30 | 华南理工大学 | System and method for automatically regulating clamping force of motor-driven injection molding machine |
| CN103640194A (en) * | 2013-12-26 | 2014-03-19 | 宁波恩瑞德机电科技有限公司 | Intelligent injection molding machine and injection molding method thereof |
| CN204263489U (en) * | 2014-12-04 | 2015-04-15 | 无锡格兰机械集团有限公司 | A kind of plastic injection molding machine clamp force adjusting device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105500649A (en) * | 2015-12-31 | 2016-04-20 | 海天塑机集团有限公司 | Two-plate type injection molding machine pull rod self-correcting system |
| CN105538627A (en) * | 2016-02-05 | 2016-05-04 | 博创智能装备股份有限公司 | Mechanical hinge, direct pressing and mold locking component |
| CN106696165A (en) * | 2016-12-23 | 2017-05-24 | 宁波通用塑料机械制造有限公司 | Fully-electric injection molding machine |
| CN106735075A (en) * | 2016-12-30 | 2017-05-31 | 宁波海天金属成型设备有限公司 | A kind of die casting machine intelligent folding mould control method and control system |
| CN106735075B (en) * | 2016-12-30 | 2019-01-15 | 宁波海天金属成型设备有限公司 | A kind of die casting machine intelligent folding mould control method and control system |
| CN111948524A (en) * | 2020-09-18 | 2020-11-17 | 珠海市精实测控技术有限公司 | Elastic deformation adjusting device for middle frame plate of FCT (Flexible Circuit test) tester |
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Application publication date: 20150225 |
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