CN103770273A - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
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- CN103770273A CN103770273A CN201310403485.4A CN201310403485A CN103770273A CN 103770273 A CN103770273 A CN 103770273A CN 201310403485 A CN201310403485 A CN 201310403485A CN 103770273 A CN103770273 A CN 103770273A
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- Prior art keywords
- screw rod
- cylinder body
- injection
- resin
- moulding
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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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
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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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1808—Feeding measured doses
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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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
- B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
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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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/60—Screws
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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
- B29C45/76—Measuring, controlling or regulating
- B29C45/762—Measuring, controlling or regulating the sequence of operations of an injection cycle
-
- 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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C2045/1875—Hoppers connected to a feed screw
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides an injection molding machine which can accurately set a supply amount of a material supply device. The injection molding machine (2) is provided with a cylinder body (11); a material supply device (81) for supplying molding materials to the cylinder body (11); a threaded rod (20) configured to rotate freely in the cylinder body (11) and proceed or step back freely along the axial direction; and a setting support device (40) for support setting of the injection molding machine (2). The setting support device (40) stores the relationship between the supply amount of the material supply device (81) and a flow of the molding materials transmitted to the front of the threaded rod (20) through the threaded rod (20), and sets the supply amount of the material supply device (81) during molding according to the stored relationship, the metering time, and the amount of molding materials at one molding dosage.
Description
Technical field
The application advocates the priority of No. 2012-233106th, Japanese patent application based on October 22nd, 2012 application.The full content of its application is applied in this description by reference.
The present invention relates to a kind of injection (mo(u)lding) machine.
Background technology
Injection (mo(u)lding) machine possesses: cylinder body; Material feeding apparatus is supplied with the resin as moulding material in cylinder body; And screw rod, be adapted in cylinder body rotation freely and free to advance or retreat.The resin being supplied in screw flight groove by material feeding apparatus is sent to front with the rotation of screw rod, and is gradually melted because of the heat from cylinder body etc.Along with the resin of melting is sent to screw rod front and is accumulated in cylinder body front portion, screw rod is retreated.If make afterwards screw rod advance, the molten resin of accumulating screw rod front penetrates from the nozzle of the leading section that is formed at cylinder body, and is filled in the die cavity space of die device.For example, by making the molten resin of filling solidify to obtain products formed (referring to Patent Document 1).
Patent documentation 1: TOHKEMY 2004-351661 communique
The quantity delivered of material feeding apparatus relies on user's experience or intuition etc. constantly to grope to set, the situation that existence cannot accurately be set.
Summary of the invention
The present invention completes in view of above-mentioned problem, and its object is to provide a kind of injection (mo(u)lding) machine that can accurately set the quantity delivered of material feeding apparatus.
For solving above-mentioned problem, the injection (mo(u)lding) machine of a mode of the present invention possesses:
Cylinder body;
Material feeding apparatus is supplied with moulding material in this cylinder body;
Screw rod, is adapted in described cylinder body rotation freely and free to advance or retreat vertically; And
Set supporting device, supports the setting of injection (mo(u)lding) machine,
The quantity delivered of described set supporting device to described material feeding apparatus and storing by the relation that described screw rod rotation is transported between the flow of moulding material in described screw rod front, and according to the moulding material amount of stored described relation, metering time and 1 shot, the quantity delivered of described material feeding apparatus when molding.
Invention effect
According to the present invention, can obtain accurately setting the injection (mo(u)lding) machine of the quantity delivered of material feeding apparatus.
Accompanying drawing explanation
Fig. 1 is the figure that represents the injection (mo(u)lding) machine of one embodiment of the present invention.
Fig. 2 is the figure of the drive unit of presentation graphs 1.
Fig. 3 illustrates to represent the rotating speed of feed screw of quantity delivered of material feeding apparatus and the figure of an example of the relation of resin flow.
Fig. 4 is the figure that represents the time dependent example of actual back pressure that purifies the screw rod while action.
In figure: 2-injection (mo(u)lding) machine, 10-injection device, 11-cylinder body, 20-screw rod, 21-screw rod main body, 22-injection part, 23-helical wing plate portion, 24-press member, 26-thread groove, 40-controller (set supporting device), 45-input part, 46-display part, 60-drive unit, 61-measure motor, 71-injects motor, 81-material feeding apparatus, 83-feeding cylinder body, 85-feed screw, 86-feeding motor.
The specific embodiment
Below, with reference to accompanying drawing to describing for implementing mode of the present invention.In each accompanying drawing, give identical or corresponding symbol and description thereof is omitted for identical or corresponding structure.Below, using the ejaculation direction of resin as front, be made as rear with the direction of the ejaculation opposite direction of resin and describe.
Injection (mo(u)lding) machine is manufactured products formed using following operation repeatedly as one-period, close the matched moulds operation of the mold closing operation of the die device being formed by fixed die and But moving die, fastening die device, by molten resin be poured into filling work procedure in die device, make after pressurize operation that the resin of cast is exerted pressure, pressurize operation resin in die device curing refrigerating work procedure, metering for the measurement process of the molten resin of next products formed, open the die sinking operation of die device and the die device from die sinking and release the release operation of products formed.For shortening molding cycle, measurement process also can carry out during refrigerating work procedure.
Fig. 1 is the figure that represents the injection (mo(u)lding) machine of one embodiment of the present invention.Injection (mo(u)lding) machine 2 has mold closing mechanism and injection device 10.Mold closing mechanism possess the fixation clip of fixed die is installed and But moving die is installed can dynamic pressure plate, making can dynamic pressure plate advance and retreat, makes But moving die and fixed die contact separation, thereby carries out mold closing, matched moulds and die sinking.Mold closing mechanism also can be any in toggle joint type, the direct press type of use fluid-pressure cylinder and the electromagnetic type of use line motor and electromagnet that uses electro-motor and toggle mechanism, and which is not particularly limited.
The injection part 22 that screw rod 20 comprises screw rod main body 21 and arranges more on the front than this screw rod main body 21, links by axial region 51 and the drive unit 60 of rear end.Screw rod main body 21 possesses helical wing plate portion 23 and loads and unloads with respect to the front end of helical wing plate portion 23 press member 24 arranging freely.Helical wing plate portion 23 possesses bar-shaped main part 23a and the outstanding spiral helicine helical wing plate 23b forming of outer peripheral face from this main part 23a, is formed with spiral helicine thread groove 26 along this helical wing plate 23b.From the rear end of helical wing plate portion 23 to front end, can be that the degree of depth of thread groove 26 is constant, also can be screw compression than constant.
In addition, can in whole screw rod main body 21, form helical wing plate portion without arranging press member 24, also can be screw rod main body 21 and from rear end to front end region, be divided into and when being supplied to the supply unit of resin, resin that compression is supplied to, make the compression unit of its melting and each with a certain amount of metering portion that the resin of melting is measured.The degree of depth of thread groove is darker at supply unit, and in metering, portion is more shallow, and more forwards more shallow in compression unit.
The anti-backflow ring 33 of the bar portion 32 that injection part 22 is included in head 31 that front end possesses conical position, abut to form with the rear of this head 31, the surrounding that is disposed in this bar portion 32 and be installed on the sealing ring (lock ring) 34 of the front end of press member 24.
In measurement process, if retreat with screw rod 20, anti-backflow ring 33 forwards moves with respect to bar portion 32, from sealing ring 34 away from, resin is sent to front from the rear of injection part 22.And, in injection process, if with the advancing of screw rod 20, anti-backflow ring 33 rearward move with respect to bar portion 32 and with sealing ring 34 butts, can prevent the adverse current of resin.
Be formed with the resin supply port 14 as moulding material supply port near of cylinder body 11 rear ends, this resin supply port 14, screw rod 20 is placed under the state of the spacing position of advancing in cylinder body 11, is formed at the opposed position of rearward end with thread groove 26.Be provided with to the material feeding apparatus 81 of the interior supply resin of cylinder body 11 at resin supply port 14.
The guide portion 84 of the tubular that material feeding apparatus 81 possesses the feeding cylinder body 83 that holds the hopper 82 of moulding material (such as resin particle), extend towards horizontal direction from the lower end of hopper 82, extend towards below from the front end of feeding cylinder body 83, be adapted at feed screw 85 freely of the interior rotation of feeding cylinder body 83 and make feeding motor 86 that feed screw 85 rotates etc.In addition, feeding cylinder body 83 without necessarily extending towards horizontal direction, for example, can extend with respect to horizontal direction obliquely, and outlet side also can be higher than entrance side.
Advance along the thread groove of feed screw 85 with the rotation of feed screw 85 from the interior resin to the 83 interior supplies of feeding cylinder body of hopper 82.The resin of sending in guide portion 84 from the front end of feed screw 85 drops and is supplied in cylinder body 11 in guide portion 84.In addition, the resin being supplied in feeding cylinder body 83 also can heat (preheating) by not shown heater.Now, resin also can be preheating to not temperature that can melting, the predetermined temperature below for example glass transition point.
Fig. 2 is the figure of the drive unit of presentation graphs 1.Drive unit 60 comprises the measure motor 61 as the drive source that makes screw rod 20 rotate in cylinder body 11.Measure motor 61 can be servo motor.Measure motor 61 comprises the rotor 63 that is fixed on the fixture 62 of scaffold Fr and is disposed in the tubular of the inner side of fixture 62.Be fixed on the splined nut 64 and rotary part 65 spline fitted of the rear end of rotor 63., rotary part 65 together rotates freely with splined nut 64, and free to advance or retreat with respect to splined nut 64.Rotary part 65 comprise by coupling 52 be linked to the axial region 51 of screw rod 20 rear end union body 66 and be fixed on the supporting mass 67 of union body 66 with bolt etc.Be formed with the spline 68 for coordinating with splined nut 64 in the periphery of supporting mass 67.The rotation of measure motor 61 is delivered to axial region 51 and screw rod 20 is rotated via rotary part 65.Thus, the helical wing plate 23b of helical wing plate portion 23 running, thus the resin being supplied in the thread groove 26 of helical wing plate portion 23 is sent to front.
In addition, the device of drive unit 60 for making screw rod 20 rotate or advance and retreat in cylinder body 11, its structure is not limited to the structure of Fig. 2.
Then, the action of injection (mo(u)lding) machine 2 is described.The action (action of for example action of injection device 10 and material feeding apparatus 81) of injection (mo(u)lding) machine 2 is controlled by controller 40.Controller 40 comprises the read-write storage part such as RAM43, hard disk 44, input interface, output interface, timer and the counter etc. of ROM42 and the storage operation result etc. of CPU41, storage control program etc.Controller 40 is carried out by CPU41 the program that is stored in ROM42 or memory 44 etc. and is realized various functions.
In measurement process, drive measure motor 61 that screw rod 20 is rotated.Now, can drive into feed screw 85 to motor 86 is rotated, also can in the time of moulding, make screw rod 20 and feed screw 85 synchronous rotaries.Supply with electric current to measure motor 61, so that the rotating speed of screw rod 20 becomes setting speed, and, supply with electric current to feeding motor 86, so that the rotating speed of feed screw 85 becomes setting speed.
The setting speed of the setting speed of screw rod 20 and feed screw 85 can be constant respectively.The ratio (sync rates) that is the setting speed of screw rod 20 and the setting speed of feed screw 85 also can be constant.
In addition, the setting speed of the setting speed of screw rod 20, feed screw 85 can be respectively elapsed time according to the position of screw rod 20 and when metering starts etc. change.And sync rates also can change in the elapsed time etc. according to the position of screw rod 20 and when metering starts.
Advance along the thread groove of feed screw 85 with the rotation of feed screw 85 to the resin of feeding cylinder body 83 interior supplies from hopper 82.The resin of sending in guide portion 84 from the front end of feed screw drops and is supplied in cylinder body 11 in guide portion 84.
The resin being supplied in cylinder body 11 can directly be sent to front by screw rod 20, and without stopping at resin supply port 14.Therefore, resin can closely not be filled in the thread groove 26 of screw rod 20, and the state of the resin in thread groove 26 becomes sparse state (starvation).Therefore, the feed speed of the resin being undertaken by material feeding apparatus 81 is faster, is sent to the more increase of amount of the resin in front in the average unit interval by screw rod 20.
The resin being supplied in cylinder body 11 advances along the thread groove 26 of screw rod 20 with the rotation of screw rod 20, and is melted by heater h11～h13 heating.And resin is pressurized gradually to the front end of screw rod main body 21 from the pressure rise starting position of the resin of screw rod main body 21.Pressure rise starting position is from press member 24 rearward only away from the position of predetermined distance, and is subjected to displacement according to the ratio (sync rates) of the rotating speed of the rotating speed of screw rod 20 and feed screw 85 etc.If pressure rise starting position is in the distance in press member 24 prescribed limits, also stabilisation of the molten condition stabilisation of resin, and the weight of products formed.
The resin advancing along the thread groove 26 of screw rod 20, by the resin stream between press member 24 and cylinder body 11 and between this by after being mixed, advance by the resin stream between cylinder body 11 and bar portion 32, and be sent to the front of screw rod 20 and be accumulated in cylinder body front portion.Along with molten resin is accumulated in the front of screw rod 20, screw rod 20 retreats.
In measurement process, driving is injected motor 71 and screw rod 20 is applied to back pressure, thereby suppresses sharply retreating of screw rod 20.Thus, the mixing property of resin is improved, and the gas in resin is easily rearward emitted.Supply with electric current to injection motor 71, so that the back pressure of screw rod 20 becomes setting back pressure.
Make between screw rod 20 back-off period, controller 40 monitors the position of screw rod 20 by not shown position sensor.If screw rod 20 retreats into metering end position, accumulate the resin that has scheduled volume in the front of screw rod 20, make the driving of measure motor 61 stop, and the rotation of screw rod 20 is stopped, thereby measurement process finishes.Also can finish simultaneously, the driving of feeding motor 86 to be stopped, and the rotation of feed screw 85 is stopped with measurement process.
In filling work procedure, driving is injected motor 71 and screw rod 20 is advanced, and the die cavity space in the die device of matched moulds state is pressed into resin.The pressure (stuffing pressure of resin) that screw rod 20 is forwards pressed pressurizing resin is detected as reaction force by load cell 74.The resin that is filled into die cavity space shrinks because of cooling, therefore answers the resin of complementary contraction amount, in pressurize operation, supplies with electric current, so that the stuffing pressure of resin becomes setting pressure to injection motor 71.
But before moulding starts, user etc. determine the metering time (rotational time of screw rod 20).In order to shorten molding cycle, the metering time is according to determining cool time, so that measurement process carries out during refrigerating work procedure.Also can set the metering time for measurement process and refrigerating work procedure roughly finishes simultaneously.
The quantity delivered of the material feeding apparatus 81 when moulding is decided to be the front that is sent to screw rod 20 with the resin of 1 shot equivalent within the determined metering time.This quantity delivered represents with the product of feed speed and service time.When screw rod 20 and feed screw 85 synchronous rotary, service time equated with the metering time, if the decision metering time, service time also determines automatically.The rotating speed of feed speed and feed screw 85 is proportional.Therefore, also can determine the rotating speed of the feed screw 85 that represents quantity delivered.
In present embodiment, controller 40 plays a role as the set supporting device of the setting of supporting injection (mo(u)lding) machine 2.In addition, set supporting device also can with the controller 60 split settings of controlling the action of injection device 10 or the action of material feeding apparatus 81.
As the controller 40 of set supporting device to represent material feeding apparatus 81 quantity delivered feed screw 85 rotating speed with store by the relation that makes screw rod 20 rotations transport the flow (below, referred to as " resin flow ") of resin to the front of screw rod 20.Above-mentioned relation is stored in ROM42 or storage part 44 etc. with forms such as such as formula.
Controller 40 is according to the amount of resin of stored relation, metering time and 1 shot etc., and the rotating speed of feed screw 85 of the quantity delivered that represents material feeding apparatus 81 is set.The various data that use in this setting (amount of resin of the data of such as above-mentioned relation, metering time, 1 shot etc.), can be input to controller 40 by the input part 45 of reception user's input operation, also can use the data that are stored in ROM42 or storage part 24 etc.Amount of resin (the mm of 1 shot
3) distance retreating according to screw rod in measurement process 20, the internal diameter of cylinder body 11 (external diameter of screw rod 20) etc. calculate.
Fig. 3 is the figure that represents the rotating speed of feed screw of the quantity delivered of material feeding apparatus and an example of the relation of resin flow.As shown in Figure 3, above-mentioned relation also can roughly represent by mathematical expressions such as first-order linear equations, resin flow (mm
3/ s) increase pro rata with the rotating speed (rpm) of feed screw 85.The rotating speed (rpm) of the feed screw 85 of controller 40 during by moulding is set resin flow (mm for
3/ s) except the amount of resin (mm of 1 shot
3) value become the metering time (s) predetermining.
Above-mentioned relation also can be measured in the time purifying action.Purify the action of action for the molten condition stabilisation for make the resin in cylinder body 11 before moulding starts, and for also discharge the action of the resin of supplying with to the interior supply resin of cylinder body 11.Purify action and carry out under the state that nozzle 12 is separated from die device, resin can not be filled in die device, so take out curing resin without time-consuming from die device.And, purify action and carry out before moulding starts, therefore can before starting, moulding measure above-mentioned relation.
There are multiple kinds as purifying action, but for example identical with measurement process, when can applying back pressure to screw rod 20, screw rod 20 is rotated.Along with resin is sent to the front of screw rod 20 and is accumulated in cylinder body front portion, screw rod 20 is retreated.If screw rod 20 advances afterwards, the molten resin that is accumulated in the front of screw rod 20 is discharged from from the nozzle 12 of the front end that is formed at cylinder body 11.
Obtain above-mentioned relation in this purification action time, resin flow (mm
3/ s) screw rod 20 is rotated by screw rod 20 is applied to back pressure when and determined, will be sent to the amount (mm of resin in front of screw rod 20
3) calculate divided by the rotational time (s) of screw rod 20.Be sent to the amount (mm of the resin in the front of screw rod 20
3) with the variable quantity equivalent of volume that is formed at the space in the front of screw rod 13 in cylinder body 11, according to calculating such as the amounts of retreating of the internal diameter of cylinder body 11 and screw rod 20.
But the inwall that resin is fixed on cylinder body 11 because of friction sometimes makes resin nut.If screw rod 20 is rotated with respect to the resin of nut, resin is not also sent to the front of screw rod 20, and screw rod 20 just retreats.
Therefore, purify action as another, after detailed content, describe, but also can make the screw rod 20 that retreats into precalculated position in this precalculated position rotation.Below, this purification action is elaborated.
First controller 40 drives injection motor 71 that screw rod 20 is retreated.Make between screw rod 20 back-off period, screw rod 20 also can not be rotated.Make between screw rod 20 back-off period, controller 40 monitors the position of screw rod 20 with not shown position sensor.
If screw rod 20 is retreated, in the interior formation of cylinder body 11 space.This space is formed at the front of screw rod 20, this volume (mm
3) according to calculating such as the internal diameters of screw rod 20 backways (mm) and cylinder body 11 (external diameter of screw rod 20).
Then, controller 40 drives measure motor 61 to make screw rod 20 with the rotating speed rotation of regulation, resin is sent to the front of screw rod 20.Now, in order to forbid that screw rod 20 retreats, controller 40 also can drive injection motor 71.And now, controller 40 can drive into feed screw 85 to motor 86 is rotated, also can make screw rod 20 and feed screw 85 synchronous rotaries.
In addition, in present embodiment, drive injection motor 71 in order to forbid screw rod 20 to retreat, but when injection motor 71 band brake, the advance and retreat that also can forbid by the brake force of brake screw rod 20.
Along with the rotation of screw rod 20, resin is sent to the front of screw rod 20, and the resin rotation that is accumulated in screw rod 20 is formed at the space in cylinder body 11 before starting.Before this space is filled up by resin, almost no change of the back pressure of screw rod 20, if this space is filled up by resin, the back pressure of screw rod 20 starts sharply to rise.
Fig. 4 is the figure that represents the time dependent example of actual back pressure that purifies the screw rod while action.The back pressure temporal evolution of Fig. 4 representing when the rotation of screw rod 20 starts.
As shown in Figure 4, if screw rod 20 starts rotation in the t1 moment, the back pressure of screw rod 20 is filled up before almost no change to above-mentioned space by resin, if above-mentioned space is filled up by resin, the back pressure of screw rod 20 starts sharply to rise.If the back pressure of screw rod 20 is raised to a certain degree,, because resin is discharged from nozzle 12, therefore the back pressure of screw rod 20 becomes constant soon.
Obtain above-mentioned relation in this purification action time, resin flow is by making the screw rod 20 that retreats into assigned position rotate and measure on this assigned position.In the rotation of screw rod 20, the advance and retreat of screw rod 20 are prohibited, thereby can get rid of the impact being caused by the nut of allowing the resin that screw rod 20 likely produces while retreating in the rotation of screw rod 20, and the mensuration accuracy of resin flow is good.
Controller 40 is by the volume (mm in above-mentioned space
3) until reaching the time T (s) of predetermined value, the back pressure of screw rod 20 calculates resin flow (mm divided by the rotation beginning from screw rod 20
3/ s).Volume (the mm in above-mentioned space
3) with the amount equivalent of resin in front that is sent to screw rod 20 within time T.Time T is measured with the timer of controller 40.
The end position that retreats of the screw rod 20 when this purification action can be the position roughly the same with measuring end position, now, and from the rotation of screw rod 20 starts, until that the back pressure of screw rod 20 reaches time T and the metering time of setting is roughly the same.With the roughly the same condition of measurement process under, can measure resin flow.
In addition, it can not be the position roughly the same with metering end position that screw rod 20 retreats end position, and is not particularly limited.Can independently calculate resin flow with screw rod 20 backways.
Controller 40 is in order to obtain above-mentioned relation, the resin flow can calculate the rotating speed that changes feed screw 85 time, and the calculating multiple resin flows corresponding with the rotating speed of multiple feed screws 85.
While obtaining above-mentioned relation, the change of rotating speed that also can corresponding feed screw 85 and change the rotating speed of screw rod 20, so that the rotating speed of screw rod 20 identical ratio while becoming with moulding with the ratio of the rotating speed of feed screw 85.Controller 40 can be according to the moulding material amount of stored relation, metering time and 1 shot, the rotating speed of the screw rod 20 when the rotating speed of the feed screw 85 during with desirable ratio molding and moulding.Therefore, the pressure rise starting position of resin can be located to desirable position, the molten condition stabilisation of resin, also stabilisation of the weight of products formed.
In addition, while obtaining above-mentioned relation, the change of rotating speed that also can corresponding feed screw 85 and change the rotating speed of screw rod 20, the rotating speed of screw rod also can be constant.,, while obtaining above-mentioned relation, the ratio of the rotating speed of the rotating speed of screw rod 20 and feed screw 85 is without necessarily constant.Now, after the rotating speed of the feed screw 85 of controller 40 during according to above-mentioned relation molding, the ratio of the rotating speed of the feed screw 85 when moulding that the speed setting Cheng Yuyi of the screw rod 20 during by moulding sets becomes the ratio of regulation.
Thus, the quantity delivered (for example rotating speed of feed screw 85) of controller 40 to material feeding apparatus 81 stored with the relation of resin flow, and according to the amount of resin of stored relation, metering time and 1 shot, set the quantity delivered of material feeding apparatus 81 etc.Therefore,, without the experience or the intuition etc. that rely on user, also can accurately set the quantity delivered of material feeding apparatus 81.
Controller 40 the quantity delivered to have set is actual carry out moulding action before, also can make to be confirmed whether in display part 46, to show with the confirmation image that the quantity delivered of having set is carried out moulding action to user.If observe the input of confirming that the user of image stipulates by input part 45, can carry out moulding action with the quantity delivered of having set etc. is actual.
In addition, in present embodiment, input part 45 and display part 46 split settings, but for example as contact panel, also can be wholely set.
The quantity delivered that material feeding apparatus 81 also can be set with controller 40, in the time of moulding to the interior supply of cylinder body 11 resin as moulding material.With the quantity delivered set, within the metering time predetermining, when measurement process does not finish, controller 40 also can be judged to be to have problems in the condition of molding beyond the quantity delivered of setting, and makes the device action of output warning.As the device of output warning, for example, use display part 46, warning buzzer, emergency warning lamp etc.Can arouse user notes.
Above, the embodiment of injection (mo(u)lding) machine is illustrated, but the invention is not restricted to above-mentioned embodiment, in the scope of recording, can carry out various distortion or improvement in technical scheme.
For example, the material feeding apparatus of above-mentioned embodiment comprises feed screw, but also can comprise vacuum loader, and its structure is not particularly limited.
And the injection device of above-mentioned embodiment makes screw rod 20 and feed screw 85 synchronous rotaries, but also can rotate respectively.For example, can, only for example, in a part (first half) for measurement process, feed screw 85 be rotated.That is, in above-mentioned embodiment, the service time of material feeding apparatus 81 is identical with the metering time, but also can be different.
And, in the measurement process of above-mentioned embodiment, when screw rod 20 is applied to back pressure, make screw rod 20 rotate, but meter action is not particularly limited.For example, identical with above-mentioned purification action, screw rod 20 is retreated, make the rotating speed rotation of screw rod 20 with regulation retreating end position, thereby the action of resin being sent to the front of screw rod 20 also can be used as meter action and carries out.In the rotation of screw rod 20, the advance and retreat of screw rod 20 are prohibited, thereby can get rid of the impact being produced by the nutization of allowing the resin that screw rod 20 likely produces while retreating in the rotation of screw rod 20, and metering precision is good.
And the injection device of above-mentioned embodiment is coaxial progressive cavity device, but also can be screw rod preformed formula device.In screw rod preformed formula, the resin of melting in plasticizing cylinder body is supplied in injection cylinder body, in die device, penetrate molten resin from injection cylinder body.In screw rod preformed formula, in plasticizing cylinder body, be equipped with screw rod.
Claims (7)
1. an injection (mo(u)lding) machine, it possesses:
Cylinder body;
Material feeding apparatus is supplied with moulding material in this cylinder body;
Screw rod, is adapted in described cylinder body rotation freely and free to advance or retreat vertically; And
Set supporting device, supports the setting of injection (mo(u)lding) machine,
Described set supporting device is stored to the quantity delivered of described material feeding apparatus and by the relation that makes described screw rod rotation be transported to the flow of the moulding material in the front of described screw rod, and according to the moulding material amount of stored described relation, metering time and 1 shot, the quantity delivered of described material feeding apparatus when molding.
2. injection (mo(u)lding) machine according to claim 1, wherein,
Described material feeding apparatus comprises feeding cylinder body and is adapted in this feeding cylinder body rotation freely, and the moulding material in this feeding cylinder body is transported to the feed screw in described cylinder body,
Described pass is the rotating speed of described feed screw and the relation of described flow that represents the quantity delivered of described material feeding apparatus,
Described set supporting device is according to the moulding material amount of stored described relation, metering time and 1 shot, the rotating speed of described feed screw when molding.
3. injection (mo(u)lding) machine according to claim 1 and 2, wherein,
While obtaining described the relation, described flow makes described screw rod rotate to measure by described screw rod is applied to back pressure when.
4. injection (mo(u)lding) machine according to claim 1 and 2, wherein,
While obtaining described the relation, described flow is by making the described screw rod that retreats into assigned position rotate to measure in described precalculated position.
5. according to the injection (mo(u)lding) machine described in any one in claim 1 to 4, wherein,
When moulding, the feed screw synchronous rotary of described screw rod and described material feeding apparatus.
6. injection (mo(u)lding) machine according to claim 5, wherein,
While obtaining described the relation, the rotating speed of described screw rod identical ratio while becoming with moulding with the ratio of the rotating speed of described feed screw,
Described set supporting device is according to the moulding material amount of stored described relation, metering time and 1 shot, and the rotating speed of the described screw rod when rotating speed of the described feed screw during to moulding and moulding is set.
7. injection (mo(u)lding) machine according to claim 5, wherein,
While obtaining described the relation, the rotating speed of described screw rod is constant,
The ratio of the rotating speed of described feed screw when moulding that the speed setting Cheng Yuyi of the described screw rod of described set supporting device during by moulding sets becomes predetermined ratio.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012233106A JP5940430B2 (en) | 2012-10-22 | 2012-10-22 | Injection molding machine |
| JP2012-233106 | 2012-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103770273A true CN103770273A (en) | 2014-05-07 |
| CN103770273B CN103770273B (en) | 2017-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310403485.4A Active CN103770273B (en) | 2012-10-22 | 2013-09-06 | Injection (mo(u)lding) machine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5940430B2 (en) |
| KR (3) | KR20140051066A (en) |
| CN (1) | CN103770273B (en) |
| TW (1) | TWI551421B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655444A (en) * | 2018-01-31 | 2020-09-11 | 住友重机械工业株式会社 | Injection molding machine and injection molding system |
| WO2023024763A1 (en) * | 2021-08-23 | 2023-03-02 | 西诺控股集团有限公司 | Control method and apparatus for intelligently measuring plasticizing capacity |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220164879A (en) | 2021-06-07 | 2022-12-14 | 이동혁 | Portable_Water-Cooling_Auto_Injection-forming Machine |
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| JPH0316216U (en) * | 1989-06-28 | 1991-02-19 | ||
| JPH03121813U (en) * | 1990-02-19 | 1991-12-12 | ||
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| JPH1177771A (en) * | 1997-09-11 | 1999-03-23 | Sumitomo Bakelite Co Ltd | Injection molding machine |
| JP2004351661A (en) | 2003-05-27 | 2004-12-16 | Toshiba Mach Co Ltd | Injection molding machine and control method therefor |
| JP4139746B2 (en) * | 2003-07-30 | 2008-08-27 | 株式会社松井製作所 | Resin raw material supply device for synthetic resin molding machine and operation method thereof |
| JP4455023B2 (en) * | 2003-11-19 | 2010-04-21 | 住友重機械工業株式会社 | Supply device and raw material supply method of supply device |
| JP2005205788A (en) * | 2004-01-23 | 2005-08-04 | Shinsei Reikyakusui System:Kk | Material feeding device |
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- 2012-10-22 JP JP2012233106A patent/JP5940430B2/en active Active
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- 2013-08-29 TW TW102131041A patent/TWI551421B/en not_active IP Right Cessation
- 2013-09-06 CN CN201310403485.4A patent/CN103770273B/en active Active
- 2013-09-30 KR KR1020130116543A patent/KR20140051066A/en active Application Filing
-
2015
- 2015-06-26 KR KR1020150091201A patent/KR20150082160A/en active Application Filing
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2019
- 2019-08-28 KR KR1020190105665A patent/KR102269352B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1048444C (en) * | 1993-08-24 | 2000-01-19 | 日精树脂工业株式会社 | Method of injection molding polyethylene terephthalate |
| CN102189638A (en) * | 2010-03-04 | 2011-09-21 | 富士胶片株式会社 | Injection molding method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655444A (en) * | 2018-01-31 | 2020-09-11 | 住友重机械工业株式会社 | Injection molding machine and injection molding system |
| CN111655444B (en) * | 2018-01-31 | 2023-05-02 | 住友重机械工业株式会社 | Injection molding machine and injection molding system |
| WO2023024763A1 (en) * | 2021-08-23 | 2023-03-02 | 西诺控股集团有限公司 | Control method and apparatus for intelligently measuring plasticizing capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014083729A (en) | 2014-05-12 |
| KR20140051066A (en) | 2014-04-30 |
| KR20150082160A (en) | 2015-07-15 |
| TW201416215A (en) | 2014-05-01 |
| JP5940430B2 (en) | 2016-06-29 |
| KR20190104117A (en) | 2019-09-06 |
| KR102269352B1 (en) | 2021-06-25 |
| TWI551421B (en) | 2016-10-01 |
| CN103770273B (en) | 2017-08-29 |
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