CN1846964A - Vertical injection molding machine - Google Patents

Vertical injection molding machine Download PDF

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Publication number
CN1846964A
CN1846964A CNA2006100735696A CN200610073569A CN1846964A CN 1846964 A CN1846964 A CN 1846964A CN A2006100735696 A CNA2006100735696 A CN A2006100735696A CN 200610073569 A CN200610073569 A CN 200610073569A CN 1846964 A CN1846964 A CN 1846964A
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China
Prior art keywords
turntable
revolution
side mold
servo motor
encoder
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Granted
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CNA2006100735696A
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Chinese (zh)
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CN100427286C (en
Inventor
国松清
神田雄一郎
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Toyo Machinery and Metal Co Ltd
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Toyo Machinery and Metal Co Ltd
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Publication of CN1846964A publication Critical patent/CN1846964A/en
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Abstract

The invention relates to a longitudinal ejection molding machine, which can hold the sliding resistance of rotational table and periodically feed lubricant to the sliding part of rotational table, to position the rotational table, wherein when the molding machine (1) operates, the pump (30) can feed lubricant to the sliding part (S), to keep the sliding resistance of sliding part (S); at the time that the rotation numbers of servo motor (25) and rotation table (14) are integers, the motor controller (51) returns the impulse account output by coder (29), therefore, even the rotation table rotates to same direction, the error of impulse will not be accumulated.

Description

Vertical injection molding machine
Technical field
The mould folding that the present invention relates to carry out in the vertical mould is shaped as the vertical injection molding machine of body, especially, relates to the vertical injection molding machine of being furnished with the mould that turntable has been installed.
Background technology
So far, what using is the vertical injection molding machine of so-called double mode, it moves to the relative position that mould can folding by making turntable rotation, make two following side molds being installed on the turntable to go up side mold with respect to one respectively, thereby carries out matched moulds in the vertical.Such on side mold and a plurality of side mold down carry out in the vertical injection molding machine of so-called double mode etc. of matched moulds, the manufacture method that adopts is: between the matched moulds operation that formed body is formed, the metal parts that insert shaping usefulness are assembled in the following side mold that disposes on by the opposition side of the following side mold of matched moulds (going up side mold), after this assembling, turntable is rotated to assigned position, by following side mold and the last side mold of having assembled metal parts being carried out matched moulds, integrally formed metal insertion parts and resin.
But, producing when metal insertion parts and resin carried out integrally formed formed body, owing on a side mould, assembled insertion parts in advance, again mould is carried out matched moulds each other afterwards, stop so being necessary to make rotation by turntable to be rotated mobile following side mold, it can not staggered with the position that itself and last side mold can be carried out the regulation of matched moulds.Figure 10 is the key diagram of major part of the vertical injection molding machine of the double mode that is associated with such prior art of expression, with reference to this figure and carry out following explanation, in this vertical injection molding machine, by servo motor 104, via driving the turntable 102 that two following side molds 100,101 have been installed with 103 positive and negative rotations synchronously.Install by with do not have illustrated on the lower surface of turntable 102 of each time side mold 100,101 of side mold matched moulds, be integrally formed with spacer pin 105.And, if by driving servo motor 104, turntable 102 rotations, then together rotate the spacer pin 105 that moves and contact (state shown in Figure 10) with limiting section 106 along with the rotation of turntable 102, up to finish to following side mold 100 above with it on side mold carry out matched moulds operation during, torque with regulation presses on limiting section 106 with spacer pin 105, with following side mold remain on can with the position of last side mold matched moulds.And, in patent documentation 1, disclose injection moulding machine with structure relevant with such prior art.
Patent documentation 1: the spy opens the 2002-172646 communique
But, vertical injection molding machine shown in Figure 10, because the positive and negative rotary stopper pin by turntable is pushed limiting section repeatedly when being shaped, so the contact site separately of spacer pin and limiting section weares and teares, if make the vertical injection molding machine running chronically, then because the wearing and tearing of the parts of the spacer pin that positions etc. just are difficult to make each time side mold to stop on the assigned position.And if continue to make the running of longitudinal type make-up machine under the state of contact site wearing and tearing, then the mould of matched moulds just staggers from assigned position, will worry also that sometimes mould can breakage when matched moulds.In addition, owing to need termly the wearing terrain of spacer pin or limiting section etc. to be changed, so in the replacing operation of wearing terrain, waste very much time and time, operate the running of the vertical injection molding machine of having to interrupt one by one for the replacing of parts, in the vertical injection molding machine of the insertion parts of integrally formed metal system etc. and resin, the manufacturing cost of the formed body of manufacturing uprises.
In addition, if spacer pin and limiting section collide, it is to be not only spacer pin or limiting section breakage that a worry is then arranged, and the drive system of turntable also can be damaged.Therefore, owing to need will before the butt turntable be stopped at spacer pin and limiting section, so be necessary to increase deceleration distance up to stopping, but there is individual problem to be: big if deceleration distance becomes, the time that then begins to the time that stops elongated, consequently whole shaping circulation from the rotation of turntable is elongated.In addition, the vertical injection molding machine of the double mode that two moulds are installed on turntable as shown in figure 10 is such, per 180 ° when back and forth rotating repeatedly on two moulds on turntable along with the rotation of turntable, spacer pin is contacted with the limiting section that is fixed in board etc., thereby make down side mold stop at assigned position, but under the situation of three stations or four stations, because the former needs per 120 °, the latter needs per 90 ° of rotations in the same direction, so need make limiting section effectively or remove the structure of complexity of limiting section or control etc., thereby cause reliability decrease and cost to rise.
In addition, in Figure 10, though turntable is stopped by spacer pin being pressed on limiting section, if but do not use such structure, and only the drive source by turntable is the control of servo motor, and the turntable of rotation is stopped, and then the stop position of turntable not only can not stop within the limits prescribed, but also can produce: along with the process of duration of runs of turntable, stop position produces the phenomenon of bigger skew.Therefore, the inventor is from the result of the various tests carried out, draws to draw a conclusion for the mechanical device of the stop position skew of turntable.
According to result of the test, the reason of this skew is, when the deceleration of turntable stops, the rotational resistance of turntable than the little situation of the rotating inertia force of turntable under, the turntable side also will continue rotation owing to overcome the inertia of this rotational resistance though servo motor enters deceleration, therefore turntable is crossed the stop position that changes regulation and is just stopped, even be rotated the positioning control of platform by servo motor, turntable also can become crossing and change the state that a side stops.On the other hand, if the rotational resistance of turntable is bigger than rotation inertia force, then with described opposite direction on effect strong, consequently, turntable tends to stop in the front of the stop position of regulation.The rotational resistance of turntable has influence on the lubricating status of the sliding part of its swivel bearing portion or turntable like this, particularly because the lubricating status of the sliding part by the big turntable of resistance to sliding brings very big restriction, if the supply of lubricant is abundant and lubricating status well then rotational resistance is little, if lubricant tails off the lubricating status variation then rotational resistance become big, so recognize the main cause that the position of rest that causes turntable is equipped with skew be: the variation of the lubricating status of the sliding part by turntable makes resistance to sliding that very big variation be arranged.
In addition, in order to detect the stop position of described turntable, making the drive source of turntable rotation to encoder output is the revolution of servo motor, by going out the stop position with the turntable of servo motor interlock by count detection from the pulse of this encoder output, thus correctly detect turntable the position, be angle.But, for example on turntable, carry four moulds, as per 90 ° four stations of mould rotation are used, turntable is continued under the situation of rotation, so long as existing limiting section mode, by per 90 ° of rotations, in the reset pulse of encoder of the moment that touches limiting section, can detect correct turntable the position, be angle.But, under the situation of not using limiting section, if make turntable continue to increase to the umber of pulse that same direction continues to rotate encoder then, finally surpass the maximum number of pulses that encoder can be counted, just can not detect turntable the tram, be the angle of turntable.In order to prevent this situation, need reset count, make can not to surpass the maximum number of pulses that this encoder can be counted, still do not possess limiting section and be difficult to correctly detect turntable the position, be the angle of turntable, and reset.
Summary of the invention
The invention that the present invention is exactly in view of the above problems to be made, its purpose is to provide a kind of vertical injection molding machine, its can be for the resistance to sliding that roughly keeps turntable definitely termly to the sliding part supplying lubricating oil of turntable, and can the turntable that rotate repeatedly be positioned.
The vertical injection molding machine of first mode comprises: the holding plate of installing side mold in the bottom; Top install with described on side mold together form the turntable of the following side mold of die cavity, make this turntable or described holding plate lifting carry out the folding of the mould of described two moulds, it is characterized in that, one or more a plurality of described side mold down are being installed on the described turntable, and with described when going up side mold and being installed on the running of described vertical injection molding machine of described holding plate, from feeding lubricating device termly to the sliding part supply of lubricant of the described turntable that rotates, remain on roughly certain by resistance to sliding with described sliding part, and can make the turntable that rotates repeatedly stop at assigned position, being furnished with the revolution that makes described turntable and the revolution as the servo motor of the drive source of this turntable becomes the reducing gear of integer, and be furnished with revolution that stores described servo motor and the encoder that the revolution of this servo motor is exported as pulse, be furnished with the moment when the revolution of the revolution of described servo motor and turntable is integer, reset from the controlling organization of the counting of the pulse of described encoder output.
Structure according to first mode, the resistance to sliding of the sliding part by the turntable that will rotate when the running of vertical injection molding machine remains on roughly certain, turntable can be stopped at the position of regulation, and at the revolution of servo motor is the revolution of integer and the turntable moment when being integer, and controlling organization resets and is stored in the pulse of encoder.Therefore, the not turntable accumulation of the pulse error that causes when reset pulse is counted of whenever turning around as prior art is even make turntable continue also can not have error correctly to be rotated the location of platform under the situations of many rotations to same direction.
Invention according to the vertical injection molding machine of first mode comprises: the holding plate of installing side mold in the bottom; Top install with described on side mold together form the turntable of the following side mold of die cavity, make this turntable or described holding plate lifting carry out the folding of the mould of described two moulds, wherein, one or more a plurality of described side mold down are being installed on the described turntable, and with described when going up side mold and being installed on the running of described vertical injection molding machine of described holding plate, from feeding lubricating device termly to the sliding part supply of lubricant of the described turntable that rotates, remain on roughly certain by resistance to sliding with described sliding part, and can make the turntable that rotates repeatedly stop at assigned position, being furnished with the revolution that makes described turntable and the revolution as the servo motor of the drive source of this turntable becomes the reducing gear of integer, and be furnished with revolution that stores described servo motor and the encoder that the revolution of this servo motor is exported as pulse, is furnished with the moment when the revolution of the revolution of described servo motor and turntable is integer, reset from the controlling organization of the counting of the pulse of described encoder output, can correctly be rotated the location of platform based on the rotation of servo motor.
Description of drawings
Fig. 1 is the front view of the vertical injection molding machine of embodiment 1.
Fig. 2 is the same, is the vertical view of vertical injection molding machine.
Fig. 3 is the same, is the sectional view of expression from the state of the major part of top observation vertical injection molding machine.
Fig. 4 is the same, is the sectional view of the major part of expression vertical injection molding machine.
Fig. 5 is the same, is the coordinate diagram that stops precision of expression turntable.
Fig. 6 is the sectional view of expression from the state of the vertical injection molding machine of top observation embodiment 2.
Fig. 7 is the same, is the block diagram that expression is used to rotate the simple structure that drives turntable.
Fig. 8 is the same, is the comparison diagram of the relation of the expression revolution of servo motor and encoder pulse and turntable revolution.
Fig. 9 is the same, is that image is set in the platform rotation, the anglec of rotation of expression turntable.
Figure 10 is the same, is the schematic illustration figure of the major part of the present vertical injection molding machine that is using of expression.
Symbol description:
1: vertical injection molding machine
13: upside holding plate (holding plate)
14: turntable
15: following side mold
16: go up side mold
25: servo motor
29: encoder
30: pump (feeding lubricating device)
51: motor controlling organization (controlling organization)
53: reducing gear
S: sliding part
The specific embodiment
Below, by Fig. 1~Fig. 9 for carrying out following explanation as the embodiment that is used to implement optimum state of the present invention.Certainly, self-evident, in the scope of not violating purport of the present invention, also can easily be applicable to the structure in addition of explanation in an embodiment.
[embodiment 1]
Fig. 1 is the front view of the vertical injection molding machine of embodiment 1, Fig. 2 is the vertical view of vertical injection molding machine, Fig. 3 is the sectional view of expression from the state of the major part of top observation vertical injection molding machine, Fig. 4 is the sectional view of the major part of expression vertical injection molding machine, and Fig. 5 is the coordinate diagram that stops precision of expression turntable.
Vertical injection molding machine 1 shown in Figure 1 is an open-close module in the vertical, be shaped the insertion parts and the integrally formed formed body of resin of metal parts etc., holding plate 10 in the middle of on the board 2 of this vertical injection molding machine 1, being fixed with, side is left and is provided with upside holding plate 13 thereon, as shown in Figure 4, insert logical middle holding plate 10 at three columniform connecting rods 12 that upside holding plate 13 and downside holding plate 11 set up, upside holding plate 13 is configured to lifting in the vertical with downside holding plate 11.And, downside holding plate 11 is linked to middle holding plate 10 fixing on board 2 by elbow-bar mechanism 17, toggle link by elbow-bar mechanism 17 flexible, 11 liftings of downside holding plate, by connecting rod 12 and upside holding plate 13 liftings that downside holding plate 11 links, carry out the folding of mould thus.
As shown in Figure 3, on described middle holding plate 10, rotary at an upper portion thereof discoid turntable 14 is installed, by to install on the top of turntable 14 each down side mold 15 with one that installs in the bottom of upside holding plate 13 on side mold 16 carry out matched moulds, thereby form die cavity.And, by the driving mechanism that does not have illustrated motor etc., the toggle link of described elbow-bar mechanism 17 is flexible, and the downside holding plate 11 of lifting in the vertical is by lifting, by making upside holding plate 13 liftings that last side mold 16 has been installed, come side mold 15 and last side mold 16 carry out the mould folding down.
In addition, be furnished with injection molding unit 20 above upside holding plate 13, the front of the injection nozzle 21 of this injection unit 20 under by the state of pressing to the resin inlet 13a of side mold 16 on installing on the upside holding plate 13, is supplied with molten resin to die cavity.And, in Fig. 1 and Fig. 4, though the injection nozzle 21 of injection unit 20 becomes the state that does not have contact pressure resin inlet 13a, but it is self-evident, when penetrating, by ball screw framework 42 rotation of motor 44 is transformed into rectilinear motion by the illustrated nut body that do not have that screws togather with lead screw shaft 43, thereby injection unit 20 is descended, the front end of injection nozzle 21 is connected to resin inlet 13a, promptly becomes the nozzle contact.
Then, further specify turntable 14, controlling organization is that microcomputer 23 (below, be called micro computer) drives servo motor 25, and this turntable 14 is with this servo motor 25 interlocks and be rotated.In an example of the present invention, the center of rotation of turntable 14 is: among the connecting rod 12 on three be disposed at is vertical, connecting rod 12 with the face side that is configured in vertical injection molding machine 1 is that axle rotates, as shown in Figures 3 and 4, the 14a of hole portion of turntable 14 is embedded among three connecting rods 12, by driving servo motor 25, what be installed on turntable 14 and servo motor 25 via being draped is with 26 synchronously, rotated while sliding by the turntable 14 of mounting on middle holding plate 10, in detail, the lower surface of turntable 14 rotates while slide under being connected to by the state of a plurality of metal part 27 of the upper surface of holding plate 10 in the middle of being arranged on integratedly.And, encoder 29 is installed on servo motor 25, by by these encoder 29 FEEDBACK CONTROL position and speed, make servo motor 25 stop at the position of regulation, come turntable 14 location.
30 as feeding lubricating device, is the lubricant of lubricating grease etc. is discharged the pump that supplies to metal part 27 and support plate described later 35 and the sliding part S of turntable 14.On this pump 30, be connected with an end of pressure pipe 31, and the other end of the pressure pipe 31 of its opposition side is connected in the supply hole 28 that forms by screwing togather with the formed nipple of through hole on middle holding plate 10, by micro computer 23, being redefined for 600 inferior certain intervals to the number of times that die cavity penetrates resin, from pump 30 via pressure pipe 31 termly to the sliding part S of turntable 14 supply of lubricant, the resistance to sliding of sliding part S roughly can be maintained certain numerical value, be in when remaining in operation state at vertical injection molding machine 1, can with stop in turn respectively at a plurality of side molds 15 down of installing on the turntable 14 can assigned position to the mould matched moulds below relative with last side mold 16 on.
In addition, the lower face side of the turntable 14 of side mold 15 under installing, as shown in Figure 4, on middle holding plate 10, support plate 35 is set integratedly, when the rotation of turntable 14, middle holding plate 10 slides mutually with this turntable 14, is set at the support plate 35 that this intermediate plate is held plate 10, when last side mold 16 drops to side mold 15 and carries out matched moulds, can support to bear this mold clamping force.
In addition, when the metering of the resin of described injection unit 20, by screw rod 40 is rotated to prescribed direction, the resin raw material of base end side to the top that is fed into heating cylinder 41 carries out mixing plasticising, and resin is sent into the injection nozzle 21 of the front of screw rod 40 by the screw thread function of transportation of screw rod 40, along with savings at the front molten resin of screw rod 40, screw rod 40 controlled back pressure on one side retreats on one side, put aside in the moment of the front of screw rod 40 at the molten resin of ormal weight, stop the rotation of screw rod 40.
In addition, when the running of vertical injection molding machine 1 when die cavity penetrates molten resin, lead screw shaft by there not being illustrated ball screw framework and screw togather with it does not have an illustrated nut body, by the motion that is in line of the rotation transformation with lead screw shaft, forward drive screw rod 40, drive by this, be filled in the die cavity that forms by last side mold 16 and following side mold 15 putting aside to penetrate in the molten resin of the front of screw rod 40.
In addition, present embodiment is to install side mold 16 on upside holding plate 13, and will by with this on two following side molds 15 of side mold 16 matched moulds be installed on turntable 14, in the vertical injection molding machine 1 of the double mode of such present embodiment, as shown in Figure 3, following side mold 15 is in the diametric(al) of the center of rotation that links turntable 14, and the last side mold 16 with respect to is disposed on the turntable 14 relatively with two following side molds 15 uniformly-spaced will installing on the top of turntable 14 of 180 °, after the mould of a last side mold 16 and a side's following side mold 15 is closed the die sinking of (matched moulds) state, control by micro computer 23 drives servo motor 25, make turntable 14 Rotate 180s °, make that the following side mold 15 of the opposing party on the turntable 14 is relative with last side mold 16, after this rotation, descend the matched moulds of side mold 15 and the mould of last side mold 16 once more.Then, from injection nozzle 21 after die cavity penetrates molten resin, the resin in the die cavity is cooled off.And, on being configured in by the opposing party's of 180 ° of opposition sides of a side's of matched moulds following side mold 15 following side mold 15, the parts of the insertion shaping usefulness of the hand operated assembling metal system by robot or operator etc., by carrying out such assembling procedure repeatedly, can be shaped insertion parts and the integrally formed formed body of resin.
Then, the stop position precision for the turntable that is rotated describes.Fig. 5 is the coordinate diagram that stops precision of stop position with the turntable of the relation that penetrates number of times of expression turntable.As previously mentioned, when the vertical injection molding machine 1 that penetrates molten resin and continue to be shaped as body to die cavity is in operating condition repeatedly, control by micro computer 23 drives control pump 30 termly, by per 600 times from the ejaculation number of times of these pump 30 molten resins, lubricant is supplied to by the sliding part S of a plurality of metal part 27 of the upper surface of holding plate 10 in the middle of being arranged at integratedly and support plate 35 and turntable 14, obtain the result shown in the coordinate diagram.In this coordinate diagram, the stop position of predefined turntable 14 is the longitudinal axis " 0 ", difference for the stop position of this setting and actual stop position is the skew of stop position, the stop position that the stop position that the mistake of turntable 14 is changed one's position is labeled as positive numerical value, will not reach side is labeled as negative numerical value, and transverse axis is represented the ejaculation number of times of molten resin.Then, by supplying with quantitative lubricant from pump 30 to sliding part S termly with per 600 times ejaculation number of times, when vertical injection molding machine 1 is in the continuous running state, the resistance to sliding of sliding part S can be remained on roughly certain state, the turntable 14 of rotation is stopped in the scope of skew of stop position of permissible level (± 50 μ m) of minimum regulation, in fact less than ± 40 μ m.Therefore, owing to can make on turntable 14 a plurality of side molds 15 down of uniformly-spaced installing with 180 ° of grades stop at the assigned position relative definitely with last side mold 16, can carry out the production with the integrally formed formed body of insertion parts effectively, thus can avoid as prior art in order to safeguard etc. and make the decline of the production efficiency that the running of make-up machine stops.
And, in an above-mentioned example, though show the vertical injection molding machine 1 of the double mode that two following side molds 15 are installed on turntable 14, even but on turntable 14, installing in the four station modes of four following side molds 15 like that as described crossly with 90 ° of intervals, also can access same effect, owing to there is not to adopt the structure as existing vertical injection molding machine: promptly every positive and negative 180 ° make the turntable rotation, push making under spacer pin and the limiting section state of contact, following side mold is stopped at the assigned position relative with last side mold, so, for example can not only make turntable 14 positive and negative rotations, can also on certain orientation, make its rotation with 90 ° of units etc., come four following side molds 15 installing on turntable 14 are carried out matched moulds, also can obtain described effect in this case.
In addition, in above-mentioned vertical injection molding machine 1, though make upside holding plate 13 liftings of installing side mold 16 carry out the folding of mould, the folding of mould is carried out in holding plate 10 liftings in the middle of also can making, in addition, also can select the assembling moment of insertion parts arbitrarily.
In addition, the control of micro computer 23 also can not be per 600 inferior ejaculation number of times, but calculating the specific time interval of the duration of runs of vertical injection molding machine 1 by micro computer 23, supply of lubricant, the resistance to sliding in the time of in this case can be with running remains on roughly certain.
More than, vertical injection molding machine 1, it remains on roughly necessarily and termly to the sliding part S of turntable 14 supply of lubricant for the resistance to sliding with turntable, consequently the turntable 14 that rotates repeatedly can be stopped at assigned position, and to be furnished with the holding plate of installing side mold 16 in the bottom be upside holding plate 13; With the turntable 14 that forms the following side mold 15 of die cavities at top installation and last side mold 16, make turntable 14 or 13 liftings of upside holding plate carry out the folding of the mould of described two moulds, wherein, one or more a plurality of following side molds 15 are being installed on the turntable 14, and in the time of will going up side mold 16 and be installed on the running of vertical injection molding machine 1 of upside holding plate 13, from feeding lubricating device is that pump 30 is termly to the sliding part S supply of lubricant of the turntable 14 that rotates, remain on roughly certain by resistance to sliding with sliding part S, and can make repeatedly the turntable 14 that rotates stop at assigned position, can be with of the following side mold 15 that together rotates with turntable 14, each of perhaps more a plurality of following side molds 15 stop at can with the position of last side mold 16 matched moulds.Therefore, owing to need not adopt method as existing vertical injection molding machine: promptly, spacer pin that together rotation is moved contacts with limiting section, make spacer pin press on limiting section and will descend side mold to remain in the stop position of the matched moulds that can stipulate, so need not carry out the replacing operation of the parts that the wearing and tearing owing to spacer pin or limiting section etc. cause, so can alleviate the burden of attended operation, the vertical injection molding machine 1 of the raising that can realize productivity ratio that can obtain to turn round for a long time.
In addition, be provided with micro computer 23 as controlling organization, it detects the ejaculation number of times that penetrates molten resin to die cavity, and driving the control feeding lubricating device based on this detected ejaculation number of times is pump 30, the regular driving pump 30 by these micro computer 23 predefined per 600 inferior ejaculation number of times is to sliding part S supply of lubricant.Thus, owing to penetrate the number of times of molten resin to die cavity during based on the running of vertical injection molding machine 1, micro computer 23 drives control pump 30, termly to sliding part S supply of lubricant, so by making vertical injection molding machine 1 running chronically, even turntable 14 rotates repeatedly, through also can make down for a long time side mold 15 stop at last side mold 16 repeatedly by the position of the regulation of matched moulds.
In addition, as shown in Figure 3, because side mold 15 is a benchmark with the center of rotation of the turntable 14 of rotation down, on the diametric(al) with uniformly-spaced and make down that side mold 15 is linking on the same straight line at its center relatively, and two following side molds 15 are installed at least, so like this when being installed on two following side mold 15 on the turntable 14, turntable is rotated for per 180 ° with equal angles, separately two can be stopped at assigned position by following side mold 15 with respect to last side mold 16.Therefore, can be as the method for shutting down of existing turntable, can not can produce mutual dislocation ground that the wearing and tearing owing to parts such as limiting sections cause and come mould matched moulds each other.
In addition, from the center of rotation of turntable 14 with uniformly-spaced and when linking on the cross hairs at its center with the following side mold 15 of four of 90 ° uniformly-spaced installations, turntable 14 90 ° ground is rotated to certain orientation is per in turn, each time side mold 15 is stopped on the assigned position with respect to last side mold 16.
In addition, even: from the center of rotation of the turntable 14 that rotates on diametric(al) being the center uniformly-spaced and with this center of rotation, with mutually arbitrarily not the interval angle of five equilibrium will a plurality of times side molds 15 be installed under the situation on the turntable 14, from pump 30 termly to the sliding part S supplying lubricating oil of the turntable 14 that rotates, keep roughly certain by resistance to sliding, also can make the following side mold 15 that together rotates with turntable 14 stop at the position of regulation sliding part S.
And, in Fig. 1~Fig. 5, though show the vertical injection molding machine 1 of double mode, but be not limited to double, also go for described four stations, promptly three following side molds be installed on turntable, can also be applicable to that on certain orientation per in turn 120 ° of rotations come a plurality of arbitrarily stations of three stations of matched moulds or five stations, six stations etc. with 120 ° of intervals.
[embodiment 2]
Fig. 6~Fig. 9 represents embodiments of the invention 2, Fig. 6 is the state of vertical injection molding machine is observed in expression from the top a sectional view, Fig. 7 is the block diagram that expression is used to rotate the simple structure that drives turntable, Fig. 8 is the comparison diagram of relation of revolution and the encoder pulse and the turntable revolution of expression servo motor, and Fig. 9 is an example of platform rotation setting image.The rotation of the platform of this Fig. 9 is set image and represented: an example of the image of the indication mechanism that does not have illustrated make-up machine controlling organization of the control of the vertical injection molding machine 1 that management is connected with motor controlling organization 51 shows the angle (deg) of platform at the platform central portion of image.This is: if turntable 14 rotation, then show the turntable 14 of following it angle (°) display image because a circle is 360 °, be shown as 180 ° (states of Fig. 9) so rotate 1/2 circle.
In addition, when turntable 14 is 0 ° below figure, the position of the turntable 14 the when top of the display list diagrammatic sketch of Fig. 9 becomes 180 °, the show state of Fig. 9 is represented the state of Rotate 180 °, the numerical value of the angle of central authorities is shown as " 180.0deg ".And, count value with umber of pulse storage part (the next figure place) 29b in the unit rotation of many revolutions storage part (upper figure place) 29a of encoder 29 and encoder 29 is a benchmark, in advance by sequencing motor controlling organization 51 perform calculations, show the angle of this turntable 14 in the angle display part of the image of Fig. 9.
Then, as shown in Figure 6, present embodiment 2 shows the vertical injection molding machine 1 that four station formulas of four following side molds 15 are installed with per 90 ° equally spaced angle on the top of turntable 14, per in turn 90 ° of rotation turntables 14 on certain orientation.And, having the identical structure of vertical injection molding machine essence with the double mode shown in the embodiment 1, the part identical with described embodiment 1 represented same-sign, omits its detailed description.In addition, when in the explanation of embodiment 2, needing, use to describe at the figure shown in the embodiment 1.
Vertical injection molding machine 1 constitutes: be that the revolution of servo motor 25 slows down to the revolution of turntable 14 in 60 whens circle and makes it reach the mechanisms of 7 circles at drive source.In more detail, determine by the number of teeth of pulley 25a that is installed in the output shaft of servo motor 25; Be with 26 synchronously; And the speed reducing ratio of the reducing gear 53 of the number of teeth that periphery had of turntable 14 formation.That is, the revolution of the turntable 14 of the revolution by making servo motor 25 when 60 circles becomes 7 circles, this speed reducing ratio (m: n) become 60: 7.And, as shown in Figure 7, on vertical injection molding machine 1, constitute: the revolution of servo motor 25 that will drive described reducing gear 53 as the encoder 29 of pulse output, carry out motor controlling organization 51 from the counting of the pulse of encoder 29 outputs etc.
Herein, for encoder 29, carry out carrying out following explanation from the motor controlling organization 51 of resetting of the counting of the counting of the pulse of encoder 29 output or pulse etc., encoder 29 is absolute type encoders, and encoder 29 comprises: the many revolutions storage part 29a that detects the revolution (number of revolutions) that stores servo motor 25; With the unit rotation interior umber of pulse storage part 29b of the unit rotation that stores servo motor 25 with interior umber of pulse.And the turntable 14 of embodiment 2 is owing in the lasting many rotations of certain orientation, so the maximum that can detect above 29 of encoders detects revolution, reaching the pulse count resets in motor controlling organization 51 that accumulates before this maximum detection revolution.The maximum of many revolutions storage part of this encoder 29 (upper figure place) 29a is ± 99 by the way.That is, if the revolution of servo motor 25 surpasses 99 circles and becomes 100 circles, then many revolutions storage part of encoder 29 (upper figure place) surpasses maximum and turns back to zero.
In embodiment 2, as mentioned above, servo motor 25 is 60: 7 with the speed reducing ratio of the reducing gear 53 of turntable 14.Therefore, carry out following explanation for the turntable in Fig. 8 14 and the relation of the count value of the pulse of servo motor 25, encoder 29.
Fig. 8 begins to represent respectively from left column: the rotation number (n) of No (illustrate and use number), turntable 14, the angle of turntable 14 (°), the count value separately of umber of pulse storage part (the next figure place) 29b in the unit rotation of many revolutions storage part (upper figure place) 29a of the revolution (m) of servo motor 25, encoder 29, encoder 29.
In embodiment 2, as shown in Figure 9, at turntable 14 counting that rises when clockwise direction rotates, counting descends when counter clockwise direction is rotated.In addition, if servo motor 25 revolves and turns around then umber of pulse storage part (the next figure place) 29b in the rotation of the unit of encoder 29 is carried out 32768 countings, each circle of the revolution of servo motor 25 (m), many revolutions storage part of encoder 29 (upper figure place) 29a counting rises 1.
At first, in Fig. 9 when angles of display is 0 °, the angle of the revolution of turntable 14 (n), turntable 14 (°), the count value separately of umber of pulse storage part (the next figure place) 29b all is 0 in the unit rotation of many revolutions storage part (upper figure place) 29a of the revolution (m) of servo motor 25, encoder 29, encoder 29.In Fig. 8, left end is classified No.1 as and is equivalent to this state.And this angle is generally origin position for 0 °, omits detailed explanation, does not point out that by there being illustrated initial point mechanism determines origin position.
Platform is rotated to clockwise direction, revolution at servo motor 25 reaches at 1/2 o'clock, umber of pulse storage part (the next figure place) 29b becomes 16384 pulses in the unit rotation of encoder 29, the angle of turntable 14 becomes 21 °, and the revolution of turntable 14 becomes 0.058333 ... (state of the No.2 of Fig. 8).
Next continue to make turntable 14 to rotate to clockwise direction, if the angle of turntable 14 becomes 42 °, then the revolution of turntable 14 becomes 0.11666 ... the revolution of servo motor 25 is a circle, umber of pulse storage part (the next figure place) 29b becomes 32768 in the unit rotation of encoder 29, and many revolutions storage part of encoder 29 (upper figure place) 29a becomes a circle (state of the No.3 of Fig. 8).And herein, encoder 29 is in case carry out 32768 countings with umber of pulse storage part (the next figure place) 29b in the unit rotation of encoder 29, then be many revolutions storage part from 0 to 1 rising counting of encoder 29, and umber of pulse storage part (the next figure place) 29b in the unit rotation of encoder 29 is reset to 0 upper figure place.Do like this be because: the maximum of umber of pulse storage part (the next figure place) 29b is 32768 in the rotation of the unit of encoder 29, and this is equivalent to servo motor 25 and turns around, is that encoder turns around.
If next continue to make servo motor 25 to forward to till two circles, then the angle of turntable 14 becomes 84 ° (states of the No.4 of Fig. 8).
If continue to make turntable 14 in addition to clockwise direction rotation, make servo motor 25 rotations from the No.5 of Fig. 8 to No.11, then turntable 14 reaches to revolve and turns around.Herein, resulting in of many revolutions storage part of encoder 29 (upper figure place) 29a is 8.571429 ... (state of the No.11 of Fig. 8).And, in many revolutions storage part (upper figure place) 29a of encoder 29, store integer value 8, though omit the following figure place of decimal point, in Fig. 8, in bracket, represented calculation value.
This is because the speed reducing ratio of the reducing gear 53 of servo motor 25 and turntable 14 is 60: 7, so turntable 14 turns around, servo motor 25 expressions change 8.571429 ... circle, umber of pulse storage part (the next figure place) 29b becomes 18724.57 pulses in the unit rotation of encoder 29.And the value among umber of pulse storage part (the next figure place) 29b is 18724 in the unit rotation of encoder 29 though be stored in herein, in Fig. 8, has represented calculation value in bracket.
If turntable 14 is continued to clockwise direction rotation (state from the No.12 of Fig. 8 to No.14), then the revolution of turntable 14 becomes 7, and the revolution of servo motor 25 becomes 60 (states of the No.15 of Fig. 8).At this moment, the angle of turntable 14 becomes 0 °, and many revolutions storage part of encoder 29 (upper figure place) 29a becomes 60, and umber of pulse storage part (the next figure place) 29b becomes 0 (32768) in the unit rotation of encoder 29.At this moment, the revolution of the revolution of turntable 14 and servo motor 25 becomes ratio of integers.
If continue further to rotate to clockwise direction, in a single day the revolution of turntable 14 becomes 14, and the revolution of servo motor 25 becomes 120, and then the revolution of the revolution of turntable 14 and servo motor 25 becomes ratio of integers (state of the No.18 of Fig. 8) once more.This moment, many revolutions storage part of encoder 29 (upper figure place) 29a became 120 similarly, and umber of pulse storage part (the next figure place) 29b becomes 0 (32768) in the unit rotation of encoder 29.
Like this in present embodiment 2, because servo motor 25 becomes 60: 7 with the speed reducing ratio of the reducing gear 53 of turntable 14, so the ratio at the revolution of turntable 14 and the revolution of servo motor 25 is 7: 60 o'clock, the angle of turntable 14 (°) becoming 0 (zero), the revolution of servo motor 25 becomes the value of 60 integral multiple.
Then, as previously mentioned, the maximum of many revolutions storage part of the encoder 29 of present embodiment 2 (upper figure place) 29a becomes ± and 99.Even the revolution of servo motor 25 surpasses 99 circles and becomes 100 circles, and then many revolutions storage part of encoder 29 (upper figure place) 29a surpasses maximum and turns back to 0.Then,, just can not find out then how many revolutions of servo motor 25 is if many revolutions storage part (upper figure place) 29a of encoder 29 turns back to 0 (zero), thus just can not detect the revolution or the turntable 14 of turntable 14 angle (°).
In order to prevent this situation, surpass 100 up to the maximum of many revolutions storage part (upper figure place) 29a of encoder 29, in other words the revolution of servo motor 25 surpasses 100 circles, many revolutions storage part (upper figure place) 29a of encoder 29 need be reset to 0.
But, under the situation of conventional example shown in Figure 10, owing to adopted when turntable is run into limiting section etc., the method of counting of encoder resets, because having known position, the angle of the turntable when running into limiting section etc. in advance is 90 ° or 180 ° etc., so can not make mistakes with this angle (then being these 180 °) reset count, if the pulse that from then on begins is counted then can be detected the angle of correct turntable if limiting section 0 is 180 °.But present embodiment 2 is not owing to use limiting section.So need to use many revolutions storage part (upper figure place) 29a of encoder 29 and interior umber of pulse storage part (the next figure place) 29b of unit rotation of encoder 29, detect the position of correct turntable 14.
Therefore, when the revolution of the revolution of above-mentioned turntable 14 and servo motor 25 becomes ratio of integers, motor controlling organization 51 is by many revolutions storage part (upper figure place) 29a of (the returning 0) encoder 29 that resets, thus can continue to detect correct turntable 14 angle (°).Why say so be because, if when the state of the No.16 of Fig. 8, many revolutions storage part (upper figure place) 29a that motor controlling organization 51 resets encoder 29 promptly returns 0, then the revolution (n) of Ci Shi turntable 14 also becomes 0 (zero), thereby becomes the state identical with the No.2 of Fig. 8.Then, under this state, continue rotation, then become No.3,4,5 once more according to Fig. 8 ... the order counting that rises, just can continue correctly to detect the angle of the revolution and the turntable 14 of turntable 14.And this moment, interior umber of pulse storage part (the next figure place) 29b of unit rotation of encoder 29 continued counting.Though umber of pulse storage part (the next figure place) 29b represents that the unit rotation of servo motor 25 is with interior umber of pulse in the rotation of the unit of this encoder 29, but by continue counting like this, owing to can continue correctly to count the angle of turntable 14, so umber of pulse storage part (the next figure place) 29b in the unit rotation of the encoder 29 that do not need to reset.
This be because: if umber of pulse storage part (the next figure place) 29b in the unit of this encoder 29 that the resets rotation, then the rotation of the unit of servo motor 25 will be chaotic with the counting of interior umber of pulse, even the problem of the angle of turntable 14 can occur correctly detecting.
In addition, reset moment of many revolutions storage part (upper figure place) 29a of encoder 29 of motor controlling organization 51, state that can be from the No.15 of Fig. 8 to No.17, be that umber of pulse storage part (the next figure place) 29b will become 0 and carry out before becoming 32768 in the unit rotation of encoder 29, but approaching 32768 o'clock, there is a worry to be: when servo motor 25 rotates at a high speed and during the reset processing, umber of pulse storage part (the next figure place) 29b surpasses 32768 and by carry in the rotation of the unit of encoder 29, many revolutions storage part of encoder 29 (upper figure place) 29a risen counting and miscount.
In addition, umber of pulse storage part (the next figure place) 29b is near 0 o'clock in the rotation of the unit of encoder 29, have worry be: servo motor 25 between pulse 0 to ± 1 pulse back and forth repeatedly, when what is called positions processing etc., cause giving up the throne of umber of pulse storage part (the next figure place) 29b in the unit rotation of encoder 29, many revolutions storage part of encoder 29 (upper figure place) 29a is lowered by counting and by miscount.Therefore, preferably, when umber of pulse storage part (the next figure place) 29b was the median left and right sides of from 0 to 32768 pulse in the unit rotation of encoder 29 as much as possible, when counting 16384 left and right sides, promptly near the state the No.16 of Fig. 8 resetted as far as possible.
The moment when becoming ratio of integers by revolution like this at the revolution of turntable 14 and servo motor 25, many revolutions storage part (upper figure place) 29a of encoder 29 resets, promptly return 0, even turntable 14 continues rotation to a direction, also can not surpass the maximum of many revolutions storage part (upper figure place) 29a of coding 29, thus can correctly continue to detect poorly turntable 14 angle (°).
And, in present embodiment 2, many revolutions storage part of encoder 29 (upper figure place) 29a though reset, promptly return 0, but also can be with other suitable integers, for example 10,20 etc. integer resets, and many revolutions storage part (upper figure place) 29a when becoming ratio of integers for the revolution of the revolution of turntable 14 and servo motor 25 also can reset with the numerical value that does not have to surpass its peaked scope.In addition, in present embodiment 2, though when the revolution of turntable 14 commentaries on classics 7 circles, servo motor 25 is 60 circles, reset, but it is self-evident certainly, in the time of also can being 120 circles etc. at the revolutions of turntable 14 commentaries on classics 14 circle servo motors 25, when the revolution of the revolution of turntable 14 and servo motor 25 becomes ratio of integers, reset.

Claims (1)

1. vertical injection molding machine, be included in the bottom install side mold holding plate and top install with described on side mold together form the turntable of the following side mold of die cavity, make this turntable or described holding plate lifting carry out the folding of the mould of described two moulds, it is characterized in that
With one or more a plurality of described side mold down is installed on the described turntable and when side mold on described is installed in the running of the described vertical injection molding machine on the described holding plate, from feeding lubricating device termly to the sliding part supply of lubricant of the described turntable that rotates, remain on roughly certain by resistance to sliding with described sliding part, and can make the turntable that rotates repeatedly stop at assigned position, being furnished with the revolution that makes described turntable and the revolution as the servo motor of the drive source of this turntable becomes the reducing gear of integer, and be furnished with revolution that stores described servo motor and the encoder that the revolution of this servo motor is exported as pulse, be furnished with the moment when the revolution of the revolution of described servo motor and turntable is integer, reset from the controlling organization of the counting of the pulse of described encoder output.
CNB2006100735696A 2005-04-11 2006-04-10 Vertical injection molding machine Expired - Fee Related CN100427286C (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102253401A (en) * 2011-04-28 2011-11-23 上海交通大学 Mechanical device used for scanning measurement of chromatographic Gamma
CN107073566A (en) * 2014-11-07 2017-08-18 东洋机械金属株式会社 Electric press casting machine
CN107942941A (en) * 2017-11-30 2018-04-20 海天塑机集团有限公司 A kind of method and system of injection molding machine and electric turntable interactive signal
CN107962734A (en) * 2017-09-15 2018-04-27 昆山晟途精密机械有限公司 A kind of safety airbag box automation injection production line
CN108189311A (en) * 2018-02-02 2018-06-22 江西普拉格电子制品有限公司 Internal frame component injection-moulding device and its method for manufacturing internal frame component

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002172646A (en) * 2000-12-05 2002-06-18 Niigata Eng Co Ltd Turntable apparatus of injection molding machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102253401A (en) * 2011-04-28 2011-11-23 上海交通大学 Mechanical device used for scanning measurement of chromatographic Gamma
CN107073566A (en) * 2014-11-07 2017-08-18 东洋机械金属株式会社 Electric press casting machine
CN107073566B (en) * 2014-11-07 2019-05-03 东洋机械金属株式会社 Electric press casting machine
CN107962734A (en) * 2017-09-15 2018-04-27 昆山晟途精密机械有限公司 A kind of safety airbag box automation injection production line
CN107942941A (en) * 2017-11-30 2018-04-20 海天塑机集团有限公司 A kind of method and system of injection molding machine and electric turntable interactive signal
CN108189311A (en) * 2018-02-02 2018-06-22 江西普拉格电子制品有限公司 Internal frame component injection-moulding device and its method for manufacturing internal frame component
CN108189311B (en) * 2018-02-02 2020-08-25 江西普拉格电子制品有限公司 Inner frame assembly injection molding equipment and method for manufacturing inner frame assembly

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