JP4667184B2 - Injection molding machine - Google Patents

Description

  The present invention relates to an injection molding machine having a vertical mold opening / closing unit and a horizontal injection unit, and in particular, has an adverse effect due to a load (lateral load) applied from the injection unit to the mold of the mold opening / closing unit during nozzle touch. The present invention relates to an injection molding machine that can be eliminated.

  An injection molding machine that combines a vertical mold opening and closing unit and a horizontal injection unit is configured to open and close the mold by moving the mold in the vertical direction. This makes it easy to place and position articles. For this reason, it is often used for insert molding, and since the injection unit is a horizontal type, it combines injection with a vertical mold opening and closing unit and a vertical injection unit. The overall height can be made smaller than that of the molding machine. Such an injection molding machine in which a vertical mold opening / closing unit and a horizontal injection unit are combined is known, for example, from Patent Document 1.

  In the case of a vertical mold opening / closing unit, a plurality of lower molds are mounted on a rotary table, and in the mold opening / closing / injecting stage, an upper mold provided on the mold opening / closing / injecting stage; The lower mold that has been transferred to the mold opening / closing / injection stage is clamped and after mold clamping, the molten resin is injected / filled into the mold, while the eject stage is transferred to the eject stage. In addition, the molded product can be configured to be ejected (ejected) from the lower mold. In an injection molding machine equipped with such a rotary table, mold closing (mold clamping) → injection → metering → mold opening at the mold opening / closing / injection stage and ejection advance → ejection backward at the eject stage are performed simultaneously. As a result, the molding cycle can be shortened. Further, in the eject stage, after the molded product is taken out, an insert article for insert molding can be placed and positioned on the lower mold by an operator or a robot. Since the positioning can be performed while the mold opening / closing / injection stage is in operation, the molding cycle can be shortened in this respect as well.

  4 and 5 show a simplified structure of a conventional injection molding machine (hereinafter referred to as a machine) having a structure in which a vertical mold opening / closing unit and a horizontal injection unit are combined, and having a rotary table. 4 is a plan view, and FIG. 5 is a front view.

  4 and 5, reference numeral 51 denotes a frame constituting the skeleton of the machine (injection molding machine), 52 denotes a vertical mold opening / closing unit including a rotary table provided on the left side of the frame 51, and 53 denotes a frame. This is a horizontal injection unit provided on the upper surface on the right side of 51, and here, illustrations of the lower components of the mold opening / closing unit 52 in the frame 51 are omitted.

  The mold opening / closing unit 52 is provided with a rotation table 54 that is assembled on the frame 51 so as to be rotatable via a rotation holding unit (not shown). The rotation table 54 has, for example, an interval of 180 °. Two lower molds 55 arranged in the above are mounted. Each lower mold 55 and the intermittent rotation table 54 for each molding cycle are rotated 180 ° to be positioned alternately on the mold opening / closing / injecting stage S11 and the ejecting stage S12. The lower mold 55 positioned on the stage S11 constitutes a pair of molds with the upper mold 57 attached to the lower surface of the movable die plate 56 provided on the mold opening / closing / injection stage S11. ing.

  A movable die plate 56 provided on the mold opening / closing / injection stage S11 is integrally connected to a tail stock (not shown) in the frame 51 by three tie bars 58, and a mold opening / closing (not shown) mounted on the tail stock is provided. Servo motor, a ball screw mechanism (not shown) that converts the rotation of the mold opening / closing servo motor into a linear motion, and a tailstock and a frame are connected to each other and driven by the mold opening / closing servo motor and the ball screw mechanism. The movable die plate 56, the tie bar 58, and the tailstock are integrally moved up and down by a toggle link mechanism (not shown). When the movable die plate 56 is driven downward, the upper mold 57 is lowered with respect to the lower mold 55 in the mold opening / closing / injection stage S11, and the mold is closed. Clamping that applies a predetermined pressure to the mold 57 and the lower mold 55 is performed. Further, when the movable die plate 56 is driven up, the upper mold 57 is raised and the mold is opened with respect to the lower mold 55 in the mold opening / closing / injection stage S11.

  Also, an unillustrated electric servomotor for ejecting and an unillustrated ejecting mechanism driven by the electric servomotor for ejecting are provided in a portion in the frame 51 corresponding to the lower mold 55 in the ejecting stage S12. The ejected electric servo motor and the eject mechanism allow the molded product attached to the lower mold 55 to be ejected (released).

  The injection unit 53 is driven by a nozzle touch motor (nozzle touch / back servo motor) (not shown) and a nozzle touch motor for moving the entire injection unit 53 in the horizontal direction in FIGS. 4 and 5. And a ball screw mechanism 59 as a nozzle touch mechanism (nozzle touch / back mechanism). The ball screw mechanism 59 includes a nut portion (not shown) that is rotatably held by the injection unit 53 and is driven to rotate by a nozzle touch motor, and a screw shaft 59a that is screwed to the nut portion. The tip of 59a is fixed to an anchor pole 60 that is suspended and fixed on the frame 51. Accordingly, when a nut portion (not shown) of the ball screw mechanism 59 is rotationally driven by a nozzle touch motor (not shown), the injection unit 53 holding the nut portion is driven forward and backward along the screw shaft 59a of the ball screw mechanism 59. It has come to be.

  The injection unit 53 performs a nozzle touch operation of pressing the nozzle 62 at the tip of the heating cylinder 61 against the mold that is in the mold-clamping state in the mold opening / closing / injection stage S11, and then puts the molten resin into the mold. An injection operation for injection / filling is performed, and when a predetermined timing before the mold opening is reached, a nozzle back operation for separating the nozzle 62 at the tip of the heating cylinder 61 from the mold is performed.

  Here, in the machine using the vertical mold opening / closing unit and the horizontal injection unit, the reason why the nozzle touch operation and the nozzle back operation are repeated every molding cycle will be supplemented. In the case of molding with a vertical mold opening / closing unit and a horizontal injection unit, an injection method in which resin is injected and filled from the lateral side of the mold, and the sprue part and runner part protrude from the upper part of the lower mold. Therefore, the center of the resin injection / filling entrance is the mold parting surface (the upper mold lower surface and lower mold) on the side of the mold so that the sprue is exposed on the upper surface of the lower mold when the mold is opened. It is common to use a bonding surface on the upper surface of the mold. That is, since the nozzle receiving portion of the mold to which the nozzle tip of the injection unit is joined is formed as a recess in the mold parting surface, the nozzle tip is in contact with both the upper mold and the lower mold. . Therefore, it is necessary to perform mold opening after retracting the injection unit and separating the nozzle from the mold before mold opening after completion of the injection process. In addition, when the lower mold is rotated by the rotary table as in the machines of FIGS. 4 and 5, it is necessary to move back to a position where the nozzle tip does not interfere with the rotating lower mold. It is necessary to perform a nozzle touch operation and a nozzle back operation for each cycle.

By the way, as described above, in the case of adopting a configuration in which the tip of the nozzle is pressed against the mold parting surface by the nozzle touch operation, when the height of the mold parting surface is changed by replacing the mold, Of course, it is necessary to adjust the height position of the nozzle (height position of the injection unit). Therefore, in the case of the conventional machine shown in FIGS. 4 and 5, when the mold is replaced, the fixed state between the tip of the screw shaft 59a of the ball screw mechanism (nozzle touch mechanism) 59 and the anchor pole 60 is released. The injection unit 53 is moved up and down by an injection unit lifting / lowering device (not shown) to adjust the height position of the nozzle 62, and then the tip of the screw shaft 59a is re-fixed to the anchor pole 60. .
Japanese Patent Laid-Open No. 05-237872

  As described above, in a machine having the vertical mold opening / closing unit 52 and the horizontal injection unit 53, the injection unit 53 repeats nozzle touch and nozzle back for each molding cycle. In the touched state, the nozzle 62 at the tip of the heating cylinder 61 is kept pressed against the mold by a predetermined pressing force. The pressing load (lateral load) applied to the mold by the nozzle 62 reaches the tie bar 58 via the upper mold 57 and the movable die plate 56, and as shown in FIG. Further, the tie bar 58 is bent and deformed so as to be bent, and damage is given to the sliding bush that guides the sliding of the tie bar 58. For this reason, the sliding bush that guides the sliding of the tie bar 58 is damaged (deformed) under the use over time, and there is a problem that the operation accuracy of mold opening and closing is deteriorated. The replacement of the sliding bush described above requires a great deal of time and labor in a configuration in which the movable die plate 56, the tie bar 58, and the tailstock are moved up and down integrally, and the productivity is remarkably deteriorated.

  The present invention has been made in view of the above points. The object of the present invention is to provide a vertical mold opening / closing unit having a configuration in which a movable die plate, a tie bar, and a tail stock are integrally moved up and down, and a horizontal mold. In a machine (injection molding machine) in which an injection unit is combined, a pressing load due to nozzle touch is prevented from reaching the tie bar.

In order to achieve the above-mentioned object, the present invention has a vertical mold opening / closing unit and a horizontal injection unit, and the vertical mold opening / closing unit includes a tailstock and a movable die having an upper mold disposed on the lower surface thereof. A plate, a tie bar that combines the tailstock and the movable die plate, a lower mold holding member that is disposed between the tailstock and the movable die plate, and a lower mold is disposed on an upper surface thereof, The horizontal injection unit is provided with a heating cylinder for each molding cycle. The horizontal injection unit is provided with a drive source for opening and closing a mold that moves the tail stock up and down to move the tie bar and the movable die plate up and down. Nozzle touch operation to push the nozzle at the tip of the mold against the mold, and nozzle back operation to move the nozzle at the tip of the heating cylinder away from the mold Causing, in the nozzle touch drive source and an injection molding machine having a nozzle touch mechanism, in the vicinity of the switchgear unit, the lower end portion is vertically disposed a fixed guide load receiving frame member to the lower structure of the frame , this guide the load receiving frame members, Rutotomoni attaching one end of the shaft portion which is the fixed side the nozzle touch mechanism, which is vertically disposed on a surface of the switchgear unit side of the guide load receiving frame members A linear member comprising a rail member, a base attached to the side surface of the tailstock and a rolling element circulating in the base, and a base attached to the side surface of the movable die plate and the rolling element circulating in the base consisting of a linear motion member was engaged as to be movable straight line and the load applied from the nozzle when the nozzle touch the mold, before Movable die plate and the tail stock, the linear motion member and through said rail member, received by the frame member for receiving the guide load, characterized in that to avoid acting on the tie bar.

  According to the present invention, a linear motion member attached to the side surface of the tailstock and a linear motion attached to the side surface of the movable die plate on the rail member provided on the guide / load receiving frame member vertically disposed near the mold opening / closing unit. The member is engaged so that it can move linearly, and the rail member is used as a guide for vertical movement, and the load applied from the nozzle to the mold at the time of nozzle touch is changed via the linear member and the rail member. Since it is received by the guide / load receiving frame member, the lateral load is not applied to the tie bar as in the conventional case, and therefore the sliding bush that guides the sliding of the tie bar is damaged. Therefore, the operation accuracy of mold opening and closing is maintained stably even after long-term use.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 relate to an injection molding machine (hereinafter referred to as a machine) according to an embodiment of the present invention (hereinafter referred to as the present embodiment), and FIG. 1 illustrates an overall outline of the machine according to the present embodiment. A simplified plan view, FIG. 2, is a simplified front view showing an overall outline of the machine according to the present embodiment. In FIG. 2, a part of the structure is broken for convenience of illustration. Shown in blocks. The machine of this embodiment is an example applied to a machine having a vertical mold opening / closing unit and a horizontal injection unit and including a rotary table.

  1 and 2, reference numeral 1 denotes a frame constituting a machine skeleton, 2 denotes a vertical mold opening / closing unit including a rotary table provided on the left side of the frame 1, and 3 denotes an upper surface on the right side of the frame 1 Is a horizontal injection unit.

  The mold opening / closing unit 2 is provided with a turntable 5 which is assembled on the upper structure portion 1a of the frame 1 so as to be rotatable via a rotation holding portion 4. Two lower molds 6 arranged at intervals are mounted. Reference numeral 7 denotes a table rotation motor (table rotation electric servomotor) attached to the upper structure portion 1 a of the frame 1. The rotation table 5 is driven to rotate via a rotation transmission mechanism 8. Each lower mold 6 on the turntable 5 is positioned alternately on the mold opening / closing / injection stage S1 and the eject stage S2 by the 180 ° rotation of the turntable 5 intermittently for each molding cycle. The lower mold 6 positioned on the mold opening / closing / injection stage S1 is paired with the upper mold 10 attached to the lower surface of the movable die plate 9 provided on the mold opening / closing / injection stage S1. Is configured.

  The movable die plate 9 provided in the mold opening / closing / injection stage S1 is integrally connected to the tail stock 12 in the frame 1 by three tie bars 11, and a mold opening / closing motor (mold) mounted on the tail stock 12 is used. An electric servo motor for opening and closing) 13, a ball screw mechanism 14 whose rotation part is rotatably held by the tail stock 12 to convert the rotation of the mold opening and closing motor 13 into a linear motion, and the tail stock 12 and the upper part of the frame 1 The tail stock 12, the tie bar 11 and the movable die plate 9 are integrally moved up and down by a toggle link mechanism 15 which is disposed so as to connect the structure portion 1a and is driven by the ball screw mechanism 14. It has become.

  When the movable die plate 9 is driven downward by the driving force of the mold opening / closing motor 13, the upper mold 10 is lowered relative to the lower mold 6 in the mold opening / closing / injection stage S1, and the mold is closed. After the mold touch, mold clamping is further performed to apply a predetermined pressure to the upper mold 10 and the lower mold 6. Further, when the movable die plate 9 is driven up by the driving force of the mold opening / closing motor 13, the upper mold 10 is raised relative to the lower mold 6 in the mold opening / closing / injection stage S1 to open the mold. Done. Of the three tie bars 11, the tie bar 11 located at the rotation center of the rotary table 5 is inserted through the sliding bush 16 fitted to the upper structure portion 1a of the frame 1 and the rotation holding portion 3, The remaining two tie bars 11 are guided by the sliding bush 16 and are slidable in the vertical direction. The remaining two tie bars 11 are inserted through the sliding bush 17 fitted to the upper structure portion 1a of the frame 1, Guided by the sliding bush 17, it can slide in the vertical direction.

  Further, 16 is an eject motor (electric servo motor for eject) attached to the lower side of the upper structure portion 1a of the frame 1 in the eject stage S2, 17 is a rotating portion (here, for example, a nut body), In the eject stage S2, the rotation of the eject motor 16 is transmitted to the rotating part of the ball screw mechanism 17 by the ball screw mechanism rotatably held below the upper structure part 1a of the frame 1 and thereby screwed into the rotating part. The linearly moving portion (here, for example, the ball screw shaft) of the ball screw mechanism 17 is moved linearly (here, moved up and down). Reference numeral 18 denotes an eject plate disposed so as to be movable up and down by a predetermined amount below the upper structure portion 1a of the frame 1 in the eject stage S2. The eject plate 18 includes a linear motion portion of the ball screw mechanism 17. The end portion is fixed, and the eject plate 18 is driven up or down by the drive force of the eject motor 16. The eject plate 18 moves up and down along a plurality of guide pins 19 suspended and fixed to the upper structure portion 1a of the frame 1, and the first eject pin 20 is erected on the eject plate 18. It is fixed. The first eject pin 20 is inserted through the upper structure portion 1a of the frame 1 and the through hole of the rotary table 5, and can be moved up and down in the lower mold 6 in the eject stage S2. The lower mold 6 is provided with a second eject pin (not shown) that can be moved up and down by a predetermined amount. The second eject pin can be driven to be pushed up by the first eject pin 20. .

  When the eject plate 18 is lifted and driven by the drive force of the eject motor 16, the first eject pin 20 comes into contact with a second eject pin (not shown). After the contact, the first eject pin 20 comes into contact with the second eject pin 20. The eject pin is pushed up, and the molded product is ejected from the lower mold 6. When the ejection of the molded product is completed, the eject plate 18 is driven downward by the drive force of the eject motor 16, and the first eject pin 20 is also lowered integrally therewith. When the first eject pin 20 is lowered, a second eject pin (not shown) in the mold is lowered by the spring force. When such an ejecting process is completed, the molded product released from the lower mold 6 is taken out manually by an operator. After the molded product is taken out, the insert article is placed and positioned on the lower mold 6 in the eject stage S2.

  On the other hand, the above-described injection unit 3 includes a nozzle touch motor (nozzle touch / back servo motor) (not shown) for moving the entire injection unit 3 in the horizontal direction in FIGS. A ball screw mechanism 31 as a nozzle touch mechanism (nozzle touch / back mechanism) driven by a motor is provided. The ball screw mechanism 31 includes a nut portion (not shown) that is rotatably held by the injection unit 3 and is driven to rotate by a nozzle touch motor, and a screw shaft 31a that is screwed to the nut portion. The tip of 31a is suspended and fixed on the lower structure portion 1b of the frame 1, and is attached to a guide / load receiving frame member 41 that extends upward through the upper structure portion 1a of the frame 1. (It is engaged and attached as described later). Thus, when a nut portion (not shown) of the ball screw mechanism 31 is rotationally driven by a nozzle touch servomotor (not shown), the injection unit 3 holding the nut portion is moved along the screw shaft 31a of the ball screw mechanism 31 (that is, The guide / load receiving frame member 41 and the mold opening / closing unit 2 are driven forward or backward.

  The injection unit 3 performs a nozzle touch operation of pressing the nozzle 33 at the tip of the heating cylinder 32 against the mold that is in the mold-clamping state in the mold opening / closing / injection stage S1, and then puts the molten resin into the mold. An injection operation for injection / filling is performed, and when a predetermined timing before the mold opening is reached, a nozzle back operation for separating the nozzle 33 at the tip of the heating cylinder 32 from the mold is performed.

  The guide / load receiving frame member 41 is disposed in the vicinity of the mold opening / closing unit 2, is manufactured in a box-like shape having a robust structure (high rigidity), and is a heating cylinder of the injection unit 3. A hole 41a into which 32 is loosely inserted is formed. Two rail members 42 are vertically arranged and fixed to the surface of the guide / load receiving frame member 41 on the mold opening / closing unit 2 side, and each rail member 42 is attached to the side surface of the movable die plate 9. The two linear motion members 21 attached and the two linear motion members 21 attached to the side surfaces of the tail stock 12 are engaged so as to be linearly movable. As a result, the movable die plate 9 and the tail stock 12 are driven to descend or ascend using the rail member 42 as a guide for vertical movement.

  In addition, two rail members 43 are vertically arranged and fixed to the surface of the guide / load receiving frame member 41 on the injection unit 3 side, and each rail member 43 has a screw shaft 31 a of the ball screw mechanism 31. The linear motion members 44 attached to are engaged with each other so as to be linearly movable. By adopting such a configuration, the injection unit 3 maintained at a predetermined height position so as not to move in the vertical direction in the molding operation state is adjusted by the injection unit elevating device 45 when the height position of the nozzle 33 is adjusted. The screw shaft 31a of the ball screw mechanism 31 can be moved up and down integrally with the injection unit 3 when moved in the vertical direction. In other words, the screw shaft 31a that is the fixed side of the ball screw mechanism (nozzle touch mechanism) 31 does not need to be removed from the guide / load receiving frame member 41 each time the height position of the nozzle 33 is adjusted. .

  Therefore, as in the past, when adjusting the nozzle height position associated with die replacement, work to release the fixed state of the tip of the screw shaft of the ball screw mechanism (nozzle touch mechanism), or work to re-fix the tip of the screw shaft Therefore, the adjustment work of the height position of the nozzle accompanying the replacement of the mold becomes easy, and the adjustment time can be shortened. Further, members for disposing the rail member 43 for engaging the linear motion member 44 attached to the screw shaft 31a which is the fixed side of the ball screw mechanism (nozzle touch mechanism) 31 are the movable die plate 9 and the tail stock 12. Since it is shared with the guide / load receiving frame member 41 for arranging the rail member 42 for guiding the vertical movement of the rail, the structure is simple and the cost can be reduced.

  FIG. 3 is a diagram showing an engaged state of the linear motion member 21 and the rail member 42. As shown in FIG. 3, the rolling elements 21 b circulating in the base 21 a of the linear motion member 21 include the rail member 42. The raceway surface 42a is configured to be engaged with each other with no clearance, and the linear motion member 21 moves on the rail member 42 by rolling guidance. Further, the linear motion member 21 and the rail member 42 are provided with a rigidity that can sufficiently withstand the load applied from the nozzle 33 to the mold during the nozzle touch described above. 3 also shows the engagement state between the linear motion member 44 and the rail member 43. The engagement relationship between the linear motion member 44 and the rail member 43 is the same as that of the linear motion member 21 and the rail member. In FIG. 3, 43 a is a raceway surface of the rail member 43, 44 a is a base of the linear motion member 44, and 44 b is a rolling element of the linear motion member 44.

  In the machine of this embodiment having such a configuration, the load (lateral load) applied from the nozzle 33 to the mold when the nozzle is touched passes through the upper mold 10, the movable die plate 9, and the linear motion member 21. Thus, the load is applied to the rail member 42 fixed to the guide / load receiving frame member 41, and the load applied to the mold from the nozzle 33 when the nozzle is touched is applied to the linear motion member 21 and the rail member 42. Thus, the frame is securely received by the guide / load receiving frame member 41. Accordingly, since the pressing load due to the nozzle touch is not applied to the tie bar 11, the sliding bushes 16 and 17 that guide the sliding of the tie bar 11 are not damaged, and the operation accuracy of the mold opening and closing is ensured even under long-term use. Maintains stability.

  In the embodiment described above, the rotary table 5 on which a plurality of lower molds 6 are mounted is used as a lower mold holding member, but instead of the rotary table 5, a single lower mold is mounted on the upper surface thereof. Needless to say, the present invention can also be applied to an injection molding machine having the fixed die plate as a lower mold holding member.

  In the embodiment described above, an example in which the mold opening / closing motor 13 is used as a mold opening / closing drive source has been shown, but an injection molding machine having a configuration using a hydraulic actuator as a mold opening / closing drive source is also used. The present invention can be applied, and the present invention can also be applied to an injection molding machine having a configuration using a direct pressure type mold opening / closing mechanism.

1 is a simplified plan view of an injection molding machine according to an embodiment of the present invention. It is the simplified front view of the injection molding machine which concerns on one Embodiment of this invention. It is explanatory drawing which shows the engagement state etc. of the linear motion member and a rail member in the injection molding machine which concerns on one Embodiment of this invention. It is the simplified top view of the conventional injection molding machine. It is the front view which simplified the conventional injection molding machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 1a Upper structure part 1b Lower structure part 2 Mold opening / closing unit 3 Injection unit 4 Rotation holding part 5 Rotating table 6 Lower mold 7 Table rotation motor (electric servo motor for table rotation)
8 Rotation transmission mechanism S1 Mold opening / closing / injection stage S2 Eject stage 9 Movable die plate 10 Upper mold 11 Tie bar 12 Tailstock 13 Mold opening / closing motor (electric servo motor for mold opening / closing)
14 Ball screw mechanism 15 Toggle link mechanism 16 Ejection motor (electric servomotor for ejection)
17 Ball screw mechanism 18 Eject plate 19 Guide pin 20 1st eject pin 21 Linear motion member 21a Base 21b Rolling body 31 Ball screw mechanism 31a Screw shaft 32 Heating cylinder 33 Nozzle 41 Guide / load receiving frame member 41a Hole portion 42 Rail member 42a Track Surface 43 Rail member 43a Track surface 44 Linear motion member 44a Base 44b Rolling element 45 Injection unit lifting device

Claims (2)

It has a vertical mold opening / closing unit and a horizontal injection unit,
The vertical mold opening / closing unit includes a tail stock, a movable die plate having an upper mold disposed on the lower surface side thereof, a tie bar that combines the tail stock and the movable die plate, the tail stock, and the movable die plate. The tie bar and the movable die plate are moved up and down together with the tail stock by moving the tail stock up and down, and a lower mold holding member arranged on the upper surface side of the lower mold holding member. A drive source for opening and closing the mold,
The horizontal injection unit has a nozzle touch operation for pressing the nozzle at the tip of the heating cylinder against the mold and a nozzle back operation for separating the nozzle at the tip of the heating cylinder from the die for each molding cycle. In an injection molding machine equipped with a touch drive source and a nozzle touch mechanism,
In the vicinity of the mold opening / closing unit, a guide / load receiving frame member having a lower end fixed to the lower structure portion of the frame is vertically arranged, and the guide / load receiving frame member is fixed to the fixed side of the nozzle touch mechanism. Rutotomoni attaching one end of a shaft portion, the longitudinal arranged rail members on a surface of the switchgear unit side of the guide load receiving frame members, the tail stock base attached to the side of the said in the base the linear motion member comprising a rolling element circulating attached base and said the base on the side surface of the linear motion member and the movable die plate comprising a rolling element circulating engaged so as to be movable straight line,
The load applied to the mold from the nozzle at the time of nozzle touch is received by the guide / load receiving frame member via the movable die plate, the tailstock , the linear motion member, and the rail member, and is applied to the tie bar. An injection molding machine characterized in that it does not act . The injection molding machine according to claim 1,
A linear motion member comprising a base and a rolling element that circulates in the base is attached to one end of a shaft portion that is a fixed side of the nozzle touch mechanism, and the linear motion member is attached to the guide / load receiving frame member. The nozzle touch mechanism is engaged with a rail member vertically arranged on the surface on the unit side so as to be linearly movable, and as the injection unit moves up and down to adjust the nozzle height position of the injection unit. An injection molding machine characterized in that the shaft portion on the fixed side also moves up and down.

Images