CN104827638A - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
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- CN104827638A CN104827638A CN201510059667.3A CN201510059667A CN104827638A CN 104827638 A CN104827638 A CN 104827638A CN 201510059667 A CN201510059667 A CN 201510059667A CN 104827638 A CN104827638 A CN 104827638A
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- injection
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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
- B29C45/84—Safety devices
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection molding machine, in the injection molding machine which uses a motor to rotate a ball screw to open and close a mold, a brake which prevents the rotation of the ball screw can be operated in a mode of linkage with the opening of a safety door. The injection molding machine is provided with a screw shaft (34) of a screw feeding mechanism (31) which rotates when a movable member (20) moves, and a brake mechanism (43) which prevents the rotation of the screw shaft (34) of the screw feeding mechanism (31), wherein the brake mechanism (43) operates in a manner of interlocking with the opening of safety doors (41, 42) and without accompanying electrical control.
Description
Technical field
The present invention relates to the injection (mo(u)lding) machine stoping the movement of the movable members such as movable plate in the mode of the unlimited interlock with safety door.
Background technology
In the past, for the injection (mo(u)lding) machine stoping the movement of movable member in the mode of the unlimited interlock with safety door, be known to patent document 1, injection (mo(u)lding) machine described in patent document 2.Patent document 1 is widely used mode in the past, the safety pole with multiple engaging end difference is arranged at fixed disk etc. with long side direction towards the mode in mould opening and closing direction, when unlimited safety door, fastening plate (retainer) falls towards above-mentioned safety pole because of deadweight, movement, engage with above-mentioned end difference, thus the movement of movable plate can be stoped.
In addition, patent document 2 relates to electrodynamic type and erects mould mold closing mechanism, the brake unit of the rotation stoping ball-screw is directly arranged at ballscrew shaft, except common braking instruction, accept outage information, ballscrew shaft rotate abnormal information, safety door enabling information at least one information time, make brake action.
Patent document 1: Japanese Unexamined Patent Publication 2010-99938 publication (claim 1,0021, Fig. 1, Fig. 3)
Patent document 2: Japanese Unexamined Patent Publication 2007-54981 publication (claim 1,0033, Fig. 3)
But, also there is following situation in patent document 1, only can insert fastening plate when the end difference of safety pole is positioned at corresponding position with fastening plate (retainer), therefore fastening plate is lingeringly sticked in end difference because of the opportunity (position of movable plate) of opening wide of safety door.On the other hand, there are the following problems for patent document 2, the information such as the enabling information of safety door are passed in the mode of electrical control via brake control section and make brake unit action, therefore, when the situation etc. that the switching from "on" position to non-power status controls cannot be carried out well, there is brake unit not with the possibility of the mode action of the unlimited interlock with safety door.In addition, all do not mention the safety device of the mold closing mechanism that intermediate member is set between fixed disk and movable plate in above-mentioned patent document 1, patent document 2 at all.
Summary of the invention
Therefore, in the present invention, its object is to provide a kind of following injection (mo(u)lding) machine, stoping in the injection (mo(u)lding) machine of the movement of the movable members such as movable plate in the mode of the unlimited interlock with safety door, be provided with the arrestment mechanism of the rotation of the lead screw shaft stoping leading screw feed mechanism, and arrestment mechanism action can not made along with electrical control in the mode of the unlimited interlock with safety door.In addition, relate to the injection (mo(u)lding) machine as arranging intermediate member between fixed disk and movable plate to above-mentioned other relevant invention, its object is to provide a kind of can make arrestment mechanism action in the mode of the unlimited interlock with safety door and stop the injection (mo(u)lding) machine of the movement of intermediate member.
Injection (mo(u)lding) machine described in technical scheme 1 of the present invention is the injection (mo(u)lding) machine that a kind of mode with the unlimited interlock with safety door stops the movement of movable member, it is characterized in that, be provided with the lead screw shaft of carrying out the leading screw feed mechanism rotated when movable member moves and stop the arrestment mechanism of rotation of lead screw shaft of leading screw feed mechanism, above-mentioned arrestment mechanism is with the unlimited interlock with safety door and do not carry out action with the mode of electrical control.
Injection (mo(u)lding) machine described in technical scheme 2 of the present invention is the injection (mo(u)lding) machine that a kind of mode with the unlimited interlock with safety door stops the movement of movable member, it is characterized in that, be provided with and use motor that ball-screw is rotated thus make the ball screw framework of movable member movement and stop the arrestment mechanism of rotation of above-mentioned ball-screw, above-mentioned arrestment mechanism is with the unlimited interlock with safety door and do not carry out action with the mode of electrical control.
On the basis of technical scheme 2, the feature of the injection (mo(u)lding) machine described in technical scheme 3 of the present invention is to possess: produce at the load produced by working oil the arrestment mechanism stoping the rotation of ball-screw when state disappears; And by the unlimited valve cutting off the connected state of the working oil of above-mentioned arrestment mechanism and organization of stres side of safety door.
Injection (mo(u)lding) machine described in technical scheme 4 of the present invention is a kind ofly be provided with the movable plate that can move up in mould opening and closing side relative to fixed disk and be arranged between fixed disk and movable plate and the intermediate member that can move up in mould opening and closing side, motor is used ball-screw to be rotated thus at least carries out the injection (mo(u)lding) machine of the mould opening and closing of intermediate member, it is characterized in that, be provided with and use motor ball-screw is rotated thus makes the ball screw framework of movable member movement, and stop the arrestment mechanism of rotation of above-mentioned ball-screw, above-mentioned arrestment mechanism carries out action in the mode of the unlimited interlock with safety door.
Effect of the present invention is as follows.
Injection (mo(u)lding) machine of the present invention is the injection (mo(u)lding) machine that a kind of mode with the unlimited interlock with safety door stops the movement of movable member, in this injection (mo(u)lding) machine, be provided with the arrestment mechanism of the rotation of the lead screw shaft of carrying out the leading screw feed mechanism rotated when movable member moves and the lead screw shaft stoping leading screw feed mechanism, above-mentioned arrestment mechanism is with the unlimited interlock with safety door and do not carry out action with the mode of electrical control, therefore, it is possible to stably stop the movement of movable member relative to opening wide of safety door.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the injection (mo(u)lding) machine of present embodiment.
Fig. 2 is the figure of the action of the injection (mo(u)lding) machine representing present embodiment.
Fig. 3 is the schematic diagram of the injection (mo(u)lding) machine of the second embodiment.
Fig. 4 is the schematic diagram of the injection (mo(u)lding) machine of the 3rd embodiment.
Fig. 5 is the schematic diagram of the injection (mo(u)lding) machine of the 4th embodiment.
In figure:
11,60,90,120-injection (mo(u)lding) machine, 13,61,91,121-mold closing mechanism, 14,15,78,79,111,112,135-injection device, 17,63,93,123-fixed disk, 19,65,95,125-movable plate, 20,67,97-intermediate member, 27,32,70,75,101,102,129-servo motor, 29,34,71,76,103,104,130-ball-screw, 41,42,85,86,109,110,136-safety door, 43,80,81,107,108,132-arrestment mechanism, 55-family of power and influence.
Detailed description of the invention
According to Fig. 1, the injection (mo(u)lding) machine 11 of the first embodiment (present embodiment) of the present invention is described.Injection (mo(u)lding) machine 11 possesses mold closing mechanism 13 and two injection devices 14,15 on lathe 12.Mold closing mechanism 13 is provided with and supplies the fixed disk 17 of fixing metal mould 16 installation and can move up and the movable plate 19 (movable member) can installed for movable metal die 18 in mould opening and closing side relative to this fixed disk 17.And, between fixed disk 17 and movable plate 19, be provided with the intermediate member 20 (movable member) that can move up in mould opening and closing side.
In the present embodiment, intermediate member 20 is inserted through connecting rod 21.The rotating disc 23 that can rotate 180 ° centered by the longitudinal axis 22 being arranged at central authorities is provided with at intermediate member 20.The face of the both sides of the rotating disc 23 of intermediate member 20 becomes the installed surface of intermetallic metal mould 24a, 24b respectively.And, when the intermetallic metal mould 24a of the side in intermetallic metal mould 24a, 24b of being installed on rotating disc 23 and fixing metal mould 16 matched moulds, the intermetallic metal mould 24b of the opposing party in intermetallic metal mould 24a, 24b and movable metal die 18 matched moulds, after temporary transient die sinking makes movable plate 23 rotate 180 °, when intermetallic metal mould 24a and movable metal die 18 matched moulds of one side, the intermetallic metal mould 24b of above-mentioned the opposing party and fixing metal mould 16 matched moulds.In addition, intermediate member 20 also can be inserted through two or four connecting rods 21, also can be arranged on lathe 12 and not be inserted through connecting rod 21 completely.In addition, intermediate member 20 also can form metal die.In addition, intermediate member 20 also can be set to rotate.
Near the corner of fixed disk 17, be respectively arranged with the closing cylinder 25 forming clamping, the plunger of closing cylinder 25 is inserted through intermediate member 20 and movable plate 19 as connecting rod 21.Closing cylinder 25 has the matched moulds side grease chamber 25a supplying working oil in matched moulds operation and the die sinking side grease chamber 25b supplying working oil in powerful die sinking operation, supplies working oil from the pump 39 as organization of stres.In addition, in FIG, closing cylinder 25 schematically only records one because omitting diagram.In addition, closing cylinder 25 also can be arranged at movable plate 19.
The servo motor 27 of the mould switching mechanism 26 (ball screw framework) lathe 12 being placed with mold closing mechanism 13 grade using installing component to be provided with movable plate 19 is moved up in mould opening and closing side.And servo motor 27 has motor originally as known servo lock function.In addition, by being fixed on bearing 28a, the 28b on lathe 12, ball-screw 29 is mounted in the mode that can rotate.The axis that the installation direction of ball-screw 29 is installed as ball-screw 29 is consistent with the mould opening and closing direction of movable plate 19.And, between the belt wheel of driving shaft 27a being fixed on servo motor 27 and the belt wheel being fixed on ball-screw 29, be linked with band, via above-mentioned band etc., ball-screw 29 rotated by the driving of servo motor 27.In addition, in the side of movable plate 19 by being fixed with the ball-screw nut 30 of mould switching mechanism 26 as the bracket of installing component.And inserting (being threaded) respectively at above-mentioned ball-screw nut 30 has ball-screw 29.(mould switching mechanism 26 is provided with two usually, but also can be between one to four.In FIG, the mould switching mechanism 26 of side is only recorded because omitting diagram.)
To be provided with one-sided two mould switching mechanisms 31 (in FIG, illustrate because omitting and schematically illustrate only) adding up to four intermediate members across the mode between movable plate 19 and intermediate member 20.The mould switching mechanism 31 (making the ball screw framework of movable member movement) of intermediate member, except making intermediate member 20 except mould opening and closing side moves up, also has and enter line-locked object to intermediate member 20 and movable plate 19 as a dish.That is because do not open and make fixing metal mould 16 and intermetallic metal mould 24a or between fixing metal mould 16 and intermetallic metal mould 24b during the demoulding intermediate member 20 and movable plate 19 being remained, produce larger load at the mould switching mechanism 31 of intermediate member, the mould switching mechanism 31 therefore preferably by four intermediate members locks.In addition, when more small-sized injection (mo(u)lding) machine 11, the mould switching mechanism 31 of intermediate member also can be one to three.In addition, in the present embodiment, at the mould switching mechanism 31 of intermediate member, there is lock function, thus when the overwhelming majority, also the lock function linked both can not be set in the side of intermetallic metal mould 24a, 24b, movable metal die 18.
The servo motor 32 of the mould switching mechanism 31 of above-mentioned intermediate member is installed via the installing component (bracket) of the part as movable plate 19 in the side of movable plate 19.And servo motor 32 has motor originally as known servo lock function.But (, in the present invention, the servo lock function not necessarily structure of servo motor 32.) in addition, the installing component in the side of movable plate 19 is provided with ball-screw 34 by bearing 33 in the mode that can rotate.The axis that the installation direction of ball-screw 34 is installed as ball-screw 34 is consistent with the mould opening and closing direction of intermediate member 20.And, band 37 is linked with between the belt wheel 35 of driving shaft 32a being fixed on servo motor 32 and the belt wheel 36 being fixed on ball-screw 34, via band 37, ball-screw 34 is rotated by the rotary actuation of the driving shaft 32a of servo motor 32, in addition, if the driving shaft 32a of servo motor 32 stops the rotation, then ball-screw 34 also stops the rotation.In addition, the ball-screw nut 38 of above-mentioned mould switching mechanism 31 is fixed on the installing component of the side of intermediate member 20.And inserting (being threaded) respectively at above-mentioned ball-screw nut 38 has ball-screw 34.Ball screw framework (leading screw feed mechanism) is formed by these servo motors 32, ball-screw 34, ball-screw nut 38.
In addition, with regard to the mould switching mechanism 31 of the mould switching mechanism 26 of movable plate, intermediate member, the dish installed for servo motor 27,32, lathe, the dish installed with confession ball-screw nut 30,38, lathe all can be contrary.In addition, also ball-screw 29,34 can directly be linked at the driving shaft of servo motor 27,32.In addition, the mould switching mechanism 26 of movable plate also can arrange servo motor 27 at fixed disk 17, and the mould switching mechanism 31 of intermediate member also can arrange servo motor 32 at fixed disk 17, lathe 12, also can arrange ball-screw nut 38 at intermediate member 20.
The mode that injection device 14 on lathe 12 can contact with nozzle can be arranged on the fixing metal mould 16 being installed on fixed disk 17 forward-reverse, and the mode that injection device 15 can contact with nozzle can be arranged on the movable metal die 18 being installed on movable plate 19 forward-reverse.In addition, movable plate 19 can move up in mould opening and closing side, and therefore injection device 15 is integrally installed on movable plate 19, together can move with the mould opening and closing of movable plate 19.
The mode of the surrounding surrounding the lathe 12 of injection (mo(u)lding) machine 11 is provided with fence 40.And, be provided with the safety door 41 of fore side in the part of the fore side of fence 40, be provided with the safety door 42 of operation opposition side in the part of the operation opposition side of fence.In addition, in FIG, with regard to fore side safety door 41, operation opposition side safety door 42 with regard to, can move in the horizontal direction respectively although be recited as Yishanmen, but can form by fanning safety door more and dual, treply open, also can be the safety door of horizontal opening in the lateral direction.In addition, also can for the safety door split, open in the vertical direction.
Next, the arrestment mechanism 43 of the rotation stoping ball-screw 34 is described.In the present embodiment, the driving shaft 32a of servo motor 32 is differently fixed with the brake disc 44 of arrestment mechanism 43 (disk brake) with belt wheel 35.In addition, with regard to the brake disc 44 of arrestment mechanism 43, can be also brake disc by belt wheel 35 substitute of the driving shaft 32a of servo motor 32.In addition, with regard to the brake disc of arrestment mechanism 43, can be brake disc by belt wheel 36 substitute of ball-screw 34, also can relative to ball-screw 34 at the partial fixing brake disc different from belt wheel 36.Further, when there is other the rotating shaft transmitting revolving force between the driving shaft 32a and ball-screw 34 of servo motor 32, the brake disc of arrestment mechanism 43 can also be fixed at other rotating shaft.
The arrestment mechanism 43 of present embodiment is the disk brake of open type, carries out action by hydraulic pressure and mechanical mechanism.But arrestment mechanism 43 also can use air pressure and mechanical mechanism, solenoid and mechanical mechanism to carry out action.The braking hydraulic cylinder 45,45 of arrestment mechanism 43 is respectively arranged with in the mode that the face of the both sides of the brake disc 44 with arrestment mechanism 43 is opposed.Braking hydraulic cylinder 45,45 is respectively to make bar 46 be fixed on movable plate 19 towards the mode of brake disc 44.Braking hydraulic cylinder 45 is the single-acting cylinder that only can supply working oil to the opening side grease chamber 47 of bar 46 side.And, in the front portion of the bar 46 of braking hydraulic cylinder 45, brake pad 48 is installed.In addition, braking hydraulic cylinder 45 is that border is provided with spring 50 in the contrary side (rear side) of opening side grease chamber 47 with piston 49, and piston 49 and brake pad 48 are exerted a force towards brake disc 44 side by the spring 50 as mechanical mechanism all the time.And, braking hydraulic cylinder 45 supplies the working oil of authorized pressure to opening side grease chamber 47, if become load to produce state, the active force then overcoming spring 50 makes piston 49 move side backward, and brake pad 48 is retreated, if the pressure leakage of working oil and make load produce state to disappear, then make brake pad 48 advance by the active force of spring 50 and in the two sides of brake disc 44 by being pressed with brake pad 48, thus brake force can be produced.
The working oil making arrestment mechanism 43 carry out release movement is transferred from pump 39 by pipeline 51.Pipeline 51 is provided with safety valve 52 and the pressure-reducing valve 53 suitably controlled the pressure of working oil.In addition, the front (braking hydraulic cylinder 45 side) of pressure-reducing valve 53 is provided with electromagnetic opening and closing valve 54.As shown in Figure 1, electromagnetic opening and closing valve 54 (OFF) when solenoid is failure to actuate is not communicated with braking hydraulic cylinder 45 side, and T port is connected with discharge member (case 56).And electromagnetic opening and closing valve 54 is communicated with braking hydraulic cylinder 45 side by solenoidal action (ON).In addition, electromagnetic opening and closing valve 54 also can use and carry out detecting the parts that also can reflect into control to solenoid regular event.
Being provided with in the front (braking hydraulic cylinder 45 side) of electromagnetic opening and closing valve 54 makes cam carry out the family of power and influence 55 of action in the mode of the unlimited interlock with safety door 41.The family of power and influence 55 becomes opening-wide state when being failure to actuate, and stream is connected with the opening side grease chamber 47 of braking with hydraulic cylinder 45.But, also can be used together the mechanism etc. that safety pole and retainer are formed.And the opening side grease chamber 47 of braking hydraulic cylinder 45 remains the load generation state of authorized pressure, thus makes arrestment mechanism 43 remain off-position.And, safety door 41 by unlimited time, above-mentioned stream is cut off, and the working oil of braking hydraulic cylinder 45 side falls from the T port of the family of power and influence 55 to discharge member (case 56).Accordingly, brake pad 48 is exerted a force by spring 50 and presses from both sides towards brake disc 44, thus plays brake force.In addition, as long as make the valve of arrestment mechanism 43 action for playing the valve of identical function, then the above-mentioned family of power and influence is not limited to.
Pipeline 51 between the family of power and influence 55 and the opening side grease chamber 47 of braking hydraulic cylinder 45 is provided with pressure switch 57.And, when confirming that above-mentioned pressure switch 57 becomes ON and the hydraulic pressure being directly connected in the working oil of the pipeline 51 of braking hydraulic cylinder 45 remains malleation, the action such as driving mechanism such as servo motor 32 grade of the mould switching mechanism 31 of intermediate member, thus the control performing mold closing operation, die sinking operation.In addition, when pressure switch 57 is OFF, quick lock in is performed in the mode that servo motor 32 etc. is failure to actuate.In addition the installation site of pressure switch 57 is not limited to illustrated position, also can arrange pressure switch 57 for each pipeline towards each braking hydraulic cylinder 45,45.In addition, the limit switch or proximity switch that detect the opening and closing of safety door 41,42 also can be set as the quick-connect mechanism of safety door 41,42.
In the present embodiment, this arrestment mechanism 43 is respectively arranged with at the mould switching mechanism 31 of the intermediate member being provided with four.In addition, in injection (mo(u)lding) machine 11, safety door 41,42 arranges multiple usually, but in this case, to be arranged on pipeline 51 with the family of power and influence 55 that each safety door 41,42 corresponding modes are arranged in the mode of connecting, all make arrestment mechanism 43 action when arbitrary safety door 41 (or 42) is opened.In addition, the pump 39 of organization of stres is not limited to one, and the pump 39 supplying working oil to closing cylinder 25 can, for the pump shared, also can be pump respectively with the pump 39 supplying working oil to arrestment mechanism 43.In addition, organization of stres also can be accumulator etc.
The mould switching mechanism 31 of intermediate member possesses above-mentioned arrestment mechanism 43 respectively, and therefore arrestment mechanism 43 can not use the signal of telecommunication with the mode of the unlimited interlock of safety door 41,42 and action and stop the rotation of ball-screw 34.Therefore, near safety door 41,42, do not possess workability when safety device also can improve die sinking, wherein safety device possesses the safety pole and retainer with jagged ladder difference.In addition, in the present embodiment, brake is not possessed at the mould switching mechanism 26 (travel mechanism of movable member) of movable plate, and possess the safety device be made up of not shown safety pole and retainer, but the mould switching mechanism 26 of movable plate also can possess the brake identical with the mould switching mechanism 31 of intermediate member, and remove other the safety device such as safety pole.Or the present invention also only can possess arrestment mechanism at the mould switching mechanism 26 of movable plate, and does not possess arrestment mechanism 43 at the mould switching mechanism 31 of intermediate member.
Next, be described centered by the action of the molding cycle of the injection (mo(u)lding) machine 11 of present embodiment, arrestment mechanism 43.As shown in Figure 1 and Figure 2, when mold closing operation, the solenoid of electromagnetic opening and closing valve 54, under the state of ON, makes the pipeline 51 between pump 39 and the opening side grease chamber 47 of braking hydraulic cylinder 45 be communicated with, the working oil of pressure setting is carried out in supply by pressure-reducing valve 53, and then becomes load generation state.Therefore, brake pad 48 overcomes the active force of spring 50 and is positioned at rear position.Therefore, the brake disc 44, the ball-screw 34 that are fixed on the driving shaft 32a of servo motor 32 are the situation that can rotate.And, making to comprise the movable plate 19 being provided with movable metal die 18 to stop after mold closing side moves up towards fixed disk 17 with the intermediate member 20 of the rotating disc 23 being provided with intermetallic metal mould 24a, 24b by the action of servo motor 27,32, terminating mold closing by engaging halfnut etc.Accordingly, between fixing metal mould 16 with intermetallic metal mould 24a, be formed with cavity (being more large-area cavity in the present embodiment), between intermetallic metal mould 24b and movable metal die 18, be formed with other cavity.In addition, carry out one-time formed situation with cavity between fixing metal mould 16 and intermetallic metal mould 24a under, carry out post forming in other cavity between intermetallic metal mould 24b and movable metal die 18, therefore become the state being inserted in current other the cavity formed between intermetallic metal mould 24b and movable metal die 18 at the one-shot forming product that last time is shaping between fixing metal mould 16 and intermetallic metal mould 24b.
As shown in layer segment in Fig. 2, in the matched moulds operation controlled at common matched moulds, pressure release operation, action is not carried out and under unlimited state at arrestment mechanism 43, the locking mechanism of servo motor 27,32 is made also to form state freely, matched moulds side grease chamber 25a to closing cylinder 25 supplies working oil, concentrates matched moulds between fixing metal mould 16 and intermetallic metal mould 24a, between intermetallic metal mould 24b and movable metal die 18.And, supply molten resin from injection device 14 to the cavity between fixing metal mould 16 and intermetallic metal mould 24a and carry out for carrying out one-time formed injection process (injection fillers operation and pressurize operation), then carrying out refrigerating work procedure.Now, with the while of above-mentioned injection process or slightly by front and back, carry out supplying molten resin from injection device 14 and for the injection process of post forming, then carrying out refrigerating work procedure being formed at other the cavity between intermetallic metal mould 24b and movable metal die 18.If the refrigerating work procedure in the cavity of both sides terminates, then next, in order to eliminate the pressure of the matched moulds side grease chamber 25a of closing cylinder 25, and carry out the pressure release operation of extracting working oil out.
And if pressure release operation terminates, then the following die sinking side grease chamber 25b to closing cylinder 25 supplies working oil and is fixed the powerful die sinking operation of the cavity between metal die 16 and intermetallic metal mould 24a.When this powerful die sinking operation, the area ratio being formed at the cavity of the one-shot forming between fixing metal mould 16 and intermetallic metal mould 24a (24b) is formed at the area of the cavity of the post forming between movable metal die 18 and intermetallic metal mould 24b (24a) greatly, and the die sinking side grease chamber to closing cylinder 25 supplies working oil and carries out the demoulding.But, consider there is following situation, now by means of only the latching force (servo lock) of servo motor 32, even if for carrying out the locking between intermetallic metal mould 24b and movable metal die 18, latching force is also not enough, thus servo motor 32 becomes overload state or causes opening between intermetallic metal mould 24b and movable metal die 18.Therefore, in the present embodiment, at the mould switching mechanism 31 (ball screw framework) of intermediate member, arrestment mechanism 43 is set, make arrestment mechanism 43 action in a controlled fashion, thus prevent the rotation of ball-screw 34, lock not make the mode first opened between intermetallic metal mould 24b and movable metal die 18.
Make arrestment mechanism 43 in a controlled fashion action time, according to the signal from not shown control device, the solenoid of electromagnetic opening and closing valve 54 is made to be OFF, the connected state of the pipeline 51 between the organization of stres side of pump 39 grade and braking hydraulic cylinder 45 (arrestment mechanism) is cut off, and makes from the T port of electromagnetic opening and closing valve 54 working oil of the regulation pressure of braking hydraulic cylinder 45 drop down onto discharge member (case 56).Its result, the working oil of the opening side grease chamber 47 of braking hydraulic cylinder 45 can be made not for malleation and the load generation state of elimination reason working oil generation, therefore by the physical force of spring 50, brake pad 48 is pressed towards brake disc 44, can stop the rotation of the ball-screw 34 of the mould switching mechanism 31 of intermediate member.In addition, pressure switch 57 becomes OFF, thus the action of the servo motor 32 of the servo motor 27 of the mould switching mechanism 26 of movable plate and the mould switching mechanism of intermediate member also stops in electrical control.
And, as described above, intermediate member 20 and movable plate 19 remain the state of one by the operation of arrestment mechanism 43, die sinking side grease chamber 25b to closing cylinder 24 supplies working oil, carries out making one-shot forming product from the cavity face of the fixing metal mould 16 only powerful die sinking operation of distance that specifies of the demoulding.Next, before starting die sinking operation, remove the locking of halfnut and make electromagnetic opening and closing valve 54 for ON and open wide the arrestment mechanism 43 of the mould switching mechanism 31 of intermediate member in a controlled fashion.Pressure switch 57 is made to become ON linkedly with it and quick lock in is removed, thus the servo motor 32 of the servo motor 27 of the mould switching mechanism 26 of movable plate and the mould switching mechanism 31 of intermediate member can action, by the action of above-mentioned servo motor 27,32, make movable plate 19 and the die sinking of intermediate member 20 difference to the die sinking end position specified.And, at die sinking end position, servo lock is carried out to servo motor 27,32, movable plate 19 and intermediate member 20 are being carried out under the fixing state in position, by not shown push pin device, the post forming product being bonded at the cavity face of intermetallic metal mould 24b or the cavity face of movable metal die 18 are given prominence to, taken out by not shown robot simultaneously.In addition, the solenoid of electromagnetic opening and closing valve 54 now also can be made to be that OFF makes arrestment mechanism 43 action, thus the position of intermediate member 20 relative to movable plate 19 is locked.And next, make the rotating disc 23 of intermediate member rotate 180 ° centered by the longitudinal axis 22, the one-shot forming product and the movable metal die 18 that make to be held in intermetallic metal mould 24a are just right.Above, if 1 molding cycle terminates, then ensuing molding cycle is started.
In addition, if shown in the orlop of Fig. 2, in above-mentioned matched moulds operation, when carrying out injection compression molding (comprise and inject punch forming) between fixing metal mould 16 and intermetallic metal mould 24a (or 24b), using the position-based sensor (not shown) corresponding respectively with four closing cylinders 25, when the detected value of pressure sensor (not shown) carries out position control and/or pressure controlled closed-loop control for each independently closing cylinder 25 and realizes parallel control, also can from matched moulds time make arrestment mechanism 43 action of the mould switching mechanism 31 of intermediate member in a controlled fashion.When making arrestment mechanism 43 action, according to the signal from not shown control device, the solenoid of electromagnetic opening and closing valve is made to be OFF, being communicated with of pipeline 51 between pump 39 with braking hydraulic cylinder 45 is cut off, and makes the working oil of braking hydraulic cylinder 45 drop down onto discharge member (case 56) from the T port of electromagnetic opening and closing valve 54.Its result, the working oil of the opening side grease chamber 47 of braking hydraulic cylinder 45 can be made to be not malleation and can load condition to be eliminated, therefore spring 50 is won, by the active force of spring 50, brake pad 48 is pressed towards brake disc 44, thus make the brake action of the rotation of the ball-screw 34 of the mould switching mechanism 31 of prevention intermediate member.In addition, meanwhile, perform quick lock in by the action of pressure switch 57, thus servo motor 32 is failure to actuate.
Next, be described when opening wide safety door in above-mentioned molding cycle (comprising the situation of common matched moulds control and the situation of the situation both sides of parallel control).When carrying out above-mentioned molding cycle in the mode of " automatically ", operator opens safety door 41 because of some reason, the situation of at least one party of 42, open the situation etc. of safety door 41 to take out products formed when carrying out above-mentioned molding cycle in the mode of " manually " or " semi-automatic ", the cam of the family of power and influence 55 with safety door 41, the mode of the unlimited interlock of 42 is pressed and makes its action, the connected state on the supply road of working oil from pump 39 to braking hydraulic cylinder 45 (pipeline 51) can be cut off, thus working oil drops down onto discharge member (case 56) from the T port of the family of power and influence 55.Its result, brake pad 48 is pressed towards brake disc 44, can make the brake action of the rotation of the ball-screw 34 of the mould switching mechanism 31 of prevention intermediate member.Like this, the safety device of present embodiment and open wide (the comprising crack) of safety door 41,42 make arrestment mechanism 43 not carry out action with electrical control by hydraulic pressure linkedly, and therefore reliability is higher.In addition, if safety device and the arrestment mechanism 43 opening wide action linkedly of safety door 41,42, then the arrestment mechanism of action can also be carried out for the mechanical type unit of being liberated formula arrestment mechanism, spring etc. by the air not with electrical control.
In addition, safety door 41,42 by unlimited time, except the action of above-mentioned arrestment mechanism 43, perform quick lock in by the action of pressure switch 57 simultaneously, also make the driving of servo motor 27,32 stop.In addition, in the present embodiment, with regard to movable plate 19, when safety door 41 grade unlimited, retainer is sticked in safety pole, also carries out the prevention of mold closing thus.But, when possessing brake at the mould switching mechanism 26 of movable plate, brake action can be made linkedly with opening wide of safety door 41,42.In addition, when stopping because of power failure supplying electric power to injection (mo(u)lding) machine 11, electromagnetic opening and closing valve 54 becomes OFF, arrestment mechanism 43 automatically action and can stop the movement of intermediate member 20 grade.
In addition, as the using method of injection (mo(u)lding) machine 11, also the rotating disc 23 of intermediate member 20 can not be made to rotate, and the intermetallic metal mould 24a making fixed disk 17 side being installed on intermediate member 20 all the time with fixing metal mould 16 matched moulds, make the intermetallic metal mould 24b of movable plate 19 side being installed on intermediate member 20 all the time with movable metal die 18 matched moulds.In this case, inject from injection device 14 being formed at the cavity between fixing metal mould 16 and intermetallic metal mould 24a, inject from injection device 15 being formed at the cavity between intermetallic metal mould 24b and movable metal die 18, thus the products formed that shaping difference is different.In this case, the mould switching mechanism 26 of movable plate is also roughly the same with the action of the mould switching mechanism 31 of intermediate member, and opening wide of safety door 41,42 is also identical with the relation of the action of arrestment mechanism 43.
Next, by with the difference of the injection (mo(u)lding) machine 11 shown in Fig. 1 centered by, the injection (mo(u)lding) machine 60 of the second embodiment of the present invention shown in Fig. 3 is described.In this second embodiment, it is identical with the injection (mo(u)lding) machine 11 shown in Fig. 1 that the mold closing mechanism 61 of injection (mo(u)lding) machine 60 is provided with this point of intermediate member 67 installed for intermetallic metal mould 66a, 66b between the fixed disk 63 installed for fixing metal mould 62 with the movable plate 65 installed for movable metal die 64, but the matched moulds of the mould opening and closing of movable plate 65 and mold closing mechanism 61 entirety is undertaken by the toggle mechanism 68 being arranged at the rear side of movable plate 65.Therefore, be fixed with matched moulds servo motor 70 in the rear side by platen 69 arranged independently with movable plate 65, the ball-screw 71 being linked to the ball screw framework of the driving shaft of above-mentioned servo motor 70 rotates in rotatable mode.And the ball-screw nut 73 at the ball screw framework being fixed on crosshead 72 inserted by ball-screw 71.In addition, movable plate 65, link by the linkage be known between platen 69, crosshead 72.
The mould switching mechanism 74 of the intermediate member of injection (mo(u)lding) machine 60 is set to across between fixed disk 63 and intermediate member 67.And, the ball-screw 76 of ball screw framework is directly linked with at the driving shaft of servo motor 75 of the installing component (bracket) being fixed on fixed disk 63, be fixed with the ball-screw nut 77 of ball screw framework at the installing component (bracket) of intermediate member 67, insert above-mentioned ball-screw 76 at ball-screw nut 77.In addition, for two injection devices 78,79 be arranged on lathe, an injection device 78 is arranged at the behind of fixed disk 63, and another injection device 79 is to be set to nozzle towards the direction orthogonal with mould opening and closing direction with the mode that the side of movable metal die 64 abuts.In addition, the configuration of injection device 78,79 is not limited to this.
In addition, for arrestment mechanism 80,81, being fixed with the brake disc 82 of disk brake at the ball-screw 76 of the mould switching mechanism 74 of intermediate member, the braking plate mat 83 of the rotation of brake disc 82 and ball-screw 76 can being stoped to be arranged at fixed disk 63 side by pressing on brake disc 82.In addition, also be fixed with the brake disc 87 of disk brake at the ball-screw 71 of the toggle mechanism 68 of the mould opening and closing and matched moulds of carrying out movable plate 65, press on brake disc 87 and the braking plate mat 84 (not shown driving mechanism) stoping the rotation of brake disc 87 and ball-screw 71 being provided with by platen 69 side.Detailed configuration, the manner of execution of arrestment mechanism 80,81 are roughly the same with the example of the injection (mo(u)lding) machine 11 of Fig. 1, therefore non-repeat specification, but in the same manner in the midway of operation, action can be carried out in a controlled fashion, when safety door 85,86 unlimited, action can not carried out with electrical control in the mode of interlock.In addition, perform quick lock in by the action of pressure switch simultaneously, become the mode of being failure to actuate with servo motor 70,75 and be provided with dual safety device.
For the molding cycle of injection (mo(u)lding) machine 60, cavity between the intermetallic metal mould 66b (or 66a) and movable metal die 64 of intermediate member 67 carries out one-shot forming, during powerful die sinking operation after one-shot forming, make arrestment mechanism 80 action of the mould switching mechanism 74 of intermediate member, thus lock between fixed disk 63 and intermediate member 67.Or, compare the one-shot forming of small size between fixing metal mould 62 and intermetallic metal mould 66a (or 66b) after, also can carry out the large post forming of the one-time formed area of area ratio by the cavity between movable metal die 64 and intermetallic metal mould 66a (or 66b).In addition, mold closing mechanism 61 uses toggle mechanism, therefore cannot carry out carrying out for each each pitman shaft the parallel control that controls independently.
Next, centered by the difference of the injection (mo(u)lding) machine 11 with the present embodiment shown in Fig. 1, the injection (mo(u)lding) machine 90 of the 3rd embodiment of the present invention shown in Fig. 4 is described.The mold closing mechanism 91 of the injection (mo(u)lding) machine 90 of the 3rd embodiment is provided with the intermediate member 97 installed for intermetallic metal mould 96a, 96b between the fixed disk 93 supplying fixing metal mould 92 to install and the movable plate 95 installed for movable metal die 94, is fixed metal die identical with this point of intermetallic metal mould, intermetallic metal mould and the matched moulds movably between metal die by closing cylinder 98 (omit and only illustrate).But, different with the mould switching mechanism of movable plate 95 for the mould switching mechanism of intermediate member 97.In the 3rd embodiment shown in Fig. 4, across being provided with the first mould switching mechanism 99 between fixed disk 93 and intermediate member 97, spreading all between intermediate member 97 and movable plate 95 and being provided with the second mould switching mechanism 100.Therefore, movable plate 95 is moved relative to the mould opening and closing of fixed disk 93 and is undertaken by the action of the mould switching mechanism of the first mould switching mechanism 99 and the second mould switching mechanism 100 both sides.
First mould switching mechanism 99 and the second mould switching mechanism 100 are made up of ball screw framework, this ball screw framework by servo motor 101,102, ball-screw 103,104 and ball-screw nut 105,106 etc. form, and are made dish move this point identical with the example of injection (mo(u)lding) machine 11 by the driving of servo motor 101,102.In addition, for be provided with this point of arrestment mechanism 107,108 for preventing the rotation of ball-screw at the first mould switching mechanism 99 and the second mould switching mechanism 100 and quick lock in circuit that the mechanism, pressure switch etc. of arrestment mechanism 107,108 action are brought also roughly the same with injection (mo(u)lding) machine 11.In addition, with regard to injection (mo(u)lding) machine 90, the configuration for the structure of safety door 109,110, injection device 111,112 is also roughly the same with injection (mo(u)lding) machine 11.
For the action of injection (mo(u)lding) machine 90, more with the action common point of injection (mo(u)lding) machine 11, but the first mould switching mechanism 99 and the second mould switching mechanism 100 all can be used as locking mechanism.Namely, when using closing cylinder 98 to carry out powerful die sinking operation, when for first carrying out the demoulding between fixing metal mould 92 and intermetallic metal mould 96a (or 96b), arrestment mechanism 108 action of the second mould switching mechanism 100 can be made and the second mould switching mechanism 100 is used as locking mechanism.In addition, when for first carrying out the demoulding between movable metal die 94 and intermetallic metal mould 96b (or 96a), arrestment mechanism 107 action of the first mould switching mechanism 99 can be made and the first mould switching mechanism 99 is used as locking mechanism.When safety door 109,110 unlimited, making in the mode of interlock, this point of arrestment mechanism 107,108 non-electrical of the first mould switching mechanism 99 and the second mould switching mechanism 100 ground action is also identical.
In addition, at these first embodiments in the 3rd embodiment, in powerful die sinking operation, in order to stop the rotation of the ball-screw of mould opening and closing structure (leading screw feed mechanism), and the hypodynamic possibility of servo lock existed by means of only servo motor, be provided with the situation of mechanical arrestment mechanism as above.The prevention of rotation of ball-screw when safety door unlimited can use this arrestment mechanism, therefore there is the superior effect that an arrestment mechanism can be used in the aspect of both sides.
In addition, as other variation of the 3rd embodiment, identically with the 3rd embodiment, also can in the mold closing mechanism possessing the first mould switching mechanism and the second mould switching mechanism, middle intermediate member is set to move, be provided with a side of above-mentioned intermediate member the first movable plate that the first mould switching mechanism carries out mould opening and closing, be provided with the opposing party of above-mentioned intermediate member the second movable plate that the second mould switching mechanism carries out mould opening and closing.In this case, also arrestment mechanism can be set the first mould switching mechanism is same with the second mould switching mechanism, can make arrestment mechanism action to non-electrical when safety door unlimited.
Next, centered by the difference of the injection (mo(u)lding) machine 11 with the present embodiment shown in Fig. 1, the injection (mo(u)lding) machine 120 of the 4th embodiment shown in Fig. 5 is described.The mold closing mechanism 121 of the injection (mo(u)lding) machine 120 of the 4th embodiment is relative to the fixed disk 123 installed for fixing metal mould 122, the movable plate 125 installed for movable metal die 124 is set to move up in mould opening and closing side, is not provided with intermediate member in-between.The closing cylinder 126 of formation clamping is respectively arranged with (in Figure 5 near the corner of fixed disk 123 (or movable plate); omit diagram and therefore only record one), the plunger of closing cylinder 126 is inserted through movable plate 125 as connecting rod 127.In addition, injection device 135 is arranged at the outside of fixed disk 123.
Be fixed with the servo motor 129 of the mould switching mechanism 128 that movable plate 125 is moved up in mould opening and closing side at fixed disk 123 or lathe 137, the driving shaft of servo motor 129 and ball-screw 130 are via shaft coupling or be with in the mode of interlock mounted.In addition, be fixed with ball-screw nut 131 at movable plate 125, ball-screw 130 is inserted through ball-screw nut 131.The number of mould switching mechanism 128 is respectively provided with one and adds up to two in both sides, but also can be between one to four.In addition, servo motor 129 also can be fixed on movable plate 125, and ball-screw nut 131 is fixed on fixed disk 123 or lathe 137.
And, be fixed with the brake disc 133 of arrestment mechanism 132 (disk brake) at ball-screw 130 (or driving shaft of servo motor 129), fixed disk 123 or lathe 137 are provided with brake pad 134 and driving mechanism thereof.In addition, the imaginations such as the structure of safety door 136 have various structure, and wherein, opening wide by safety door 136, above-mentioned arrestment mechanism 132 does not use signal of telecommunication ground action and stops ball-screw 130 to rotate.In addition, when having a power failure, arrestment mechanism 132 also can mechanically action and stop ball-screw 130 to rotate.Therefore, be only provided with at the mold closing mechanism 121 of injection (mo(u)lding) machine 120 and prevent the rotation of ball-screw 130 unlimited safety door 136 and the mechanism that is the safety device that prevent the closedown of movable plate 125, and be not provided with safety pole, retainer.But, also can be used together the mechanism etc. be made up of above-mentioned safety pole, retainer.
For the molding cycle of injection (mo(u)lding) machine 120, when matched moulds operation, powerful die sinking operation, by the action of closing cylinder 126, movable plate 125 is moved relative to the position of fixed disk 123, but the arrestment mechanism 132 of mould switching mechanism 128 becomes opening-wide state, servo motor 129 and ball-screw 130 are with the driven rotation of state freely.When movable plate 125 stops at die sinking end position, also can make arrestment mechanism 132 action and not change the position of movable plate 125.
In addition, at the first above-mentioned embodiment in the 4th embodiment, motor uses servo motor, but also can use other motor.In addition, the leading screw feed mechanism being provided with arrestment mechanism employs ball screw framework, but also can by motor, the screw thread beyond ball-screw (such as trapezoidal thread etc.) be rotated and the movable plate as movable member be moved.Or leading screw feed mechanism also can not use motor and rotate, only when movable member mobile, with the driven rotation of the mode of screw thread interlock.In this case, the driver element of the mould switching mechanism (travel mechanism) of movable member can arrange the leading screw feed mechanism driven by motor in addition, also can arrange hydraulic cylinder or cylinder etc.
In addition, at the first above-mentioned embodiment in the 4th embodiment, when using the thimble making ball-screw or ball-screw nut rotate by motor, also disk brake can be set at the driving shaft or ball-screw making the motor of thimble action, and the control of thimble when injecting locking or do not use the signal of telecommunication when safety door unlimited and lock.Its result, can make the action emergent stopping of thimble pin (movable member) when safety door unlimited.
Industrial utilizes possibility
Though the present invention does not enumerate, be not limited to above-mentioned present embodiment, those skilled in the art are on the basis of purport of the present invention, and it is self-evident that applying change is applied.The material that injection (mo(u)lding) machine uses is not defined.Therefore, the present invention also can be used in metal injection (mo(u)lding) machine.
Claims (4)
1. an injection (mo(u)lding) machine, stops the movement of movable member, it is characterized in that, be provided with in the mode of the unlimited interlock with safety door:
The lead screw shaft of the leading screw feed mechanism rotated is carried out when movable member moves; And
Stop the arrestment mechanism of the rotation of the lead screw shaft of leading screw feed mechanism,
Described arrestment mechanism is with the unlimited interlock with safety door and do not carry out action with the mode of electrical control.
2. an injection (mo(u)lding) machine, stops the movement of movable member, it is characterized in that, be provided with in the mode of the unlimited interlock with safety door:
Motor is used ball-screw to be rotated thus makes the ball screw framework of movable member movement; And
Stop the arrestment mechanism of the rotation of described ball-screw,
Described arrestment mechanism is with the unlimited interlock with safety door and do not carry out action with the mode of electrical control.
3. injection (mo(u)lding) machine according to claim 2, is characterized in that, possesses:
The arrestment mechanism stoping the rotation of ball-screw when state disappears is produced at the load produced by working oil; And
By the unlimited valve cutting off the connected state of the working oil of described arrestment mechanism and organization of stres side of safety door.
4. an injection (mo(u)lding) machine, is provided with:
The movable plate that can move up in mould opening and closing side relative to fixed disk; And
Be arranged at the intermediate member that also can move up in mould opening and closing side between fixed disk and movable plate,
Motor is used ball-screw to be rotated thus at least carries out the mould opening and closing of intermediate member,
The feature of described injection (mo(u)lding) machine is, is provided with:
Motor is used ball-screw to be rotated thus makes the ball screw framework of intermediate member movement; And
Stop the arrestment mechanism of the rotation of described ball-screw,
Described arrestment mechanism carries out action in the mode of the unlimited interlock with safety door.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014021958A JP5946194B2 (en) | 2014-02-07 | 2014-02-07 | Injection molding machine |
| JP2014-021958 | 2014-02-07 |
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| CN104827638A true CN104827638A (en) | 2015-08-12 |
| CN104827638B CN104827638B (en) | 2017-04-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108568954A (en) * | 2017-03-13 | 2018-09-25 | 发那科株式会社 | Injection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6224046B2 (en) * | 2015-10-06 | 2017-11-01 | 株式会社日本製鋼所 | Safety device for electric injection molding machine |
| JP6351643B2 (en) * | 2016-01-19 | 2018-07-04 | 株式会社日本製鋼所 | Molding machine with toggle type mold clamping device |
| JP6525347B2 (en) * | 2017-05-17 | 2019-06-05 | 株式会社名機製作所 | Injection molding machine for composite molded article and control method of injection molding machine for composite molded article |
| JP6523382B2 (en) * | 2017-08-07 | 2019-05-29 | ファナック株式会社 | Brake control device for injection molding machine and brake control method for injection molding machine |
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|---|---|---|---|---|
| JPH06166079A (en) * | 1992-11-30 | 1994-06-14 | Nissei Plastics Ind Co | Safety device in mold clamping device |
| JP2010228341A (en) * | 2009-03-27 | 2010-10-14 | Fanuc Ltd | Mechanical safety device for injection molding machine |
| JP2013224042A (en) * | 2013-07-03 | 2013-10-31 | Meiki Co Ltd | Injection molding machine for composite molded article and operation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002264194A (en) * | 2001-03-14 | 2002-09-18 | Meiki Co Ltd | Safety device of electromotive injection molding machine |
| JP4078323B2 (en) * | 2004-03-23 | 2008-04-23 | 日精樹脂工業株式会社 | Toggle type clamping device with safety device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06166079A (en) * | 1992-11-30 | 1994-06-14 | Nissei Plastics Ind Co | Safety device in mold clamping device |
| JP2010228341A (en) * | 2009-03-27 | 2010-10-14 | Fanuc Ltd | Mechanical safety device for injection molding machine |
| JP2013224042A (en) * | 2013-07-03 | 2013-10-31 | Meiki Co Ltd | Injection molding machine for composite molded article and operation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568954A (en) * | 2017-03-13 | 2018-09-25 | 发那科株式会社 | Injection device |
| CN108568954B (en) * | 2017-03-13 | 2019-08-02 | 发那科株式会社 | Injection device |
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| JP5946194B2 (en) | 2016-07-05 |
| JP2015147361A (en) | 2015-08-20 |
| CN104827638B (en) | 2017-04-12 |
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