JP4713448B2 - Rigid injection molding machine - Google Patents

Description

  The present invention relates to a rigid injection molding machine, and more particularly to a rigid injection molding machine that performs nozzle touch by guiding an injection device with a linear guide.

  In an injection molding machine for molding a resin molded product, there is a rigid injection molding machine as a molding machine suitable for injection molding that requires opening / closing accuracy of a mold. In the solid injection molding machine, a movable part such as a movable platen for moving the movable mold moves in the vertical direction. For this reason, compared with the horizontal injection molding machine in which a movable part moves horizontally, the straightness of a movable part can be ensured easily. On the other hand, the movable part must be moved (moved upward) against gravity, and the weight of the movable part including the movable mold is limited. Therefore, the rigid injection molding machine is often used for molded products that are relatively small and require dimensional accuracy.

  In a solid injection molding machine, a fixed platen to which a fixed mold is attached is generally provided on the lower side, and a movable platen to which a movable mold is attached moves vertically with respect to the fixed platen. For example, a rigid injection molding machine configured to vertically move a movable platen along two guide posts extending vertically has been proposed (see, for example, Patent Document 1).

  In this rigid injection molding machine, two guide posts are fixed upright and fixed to a fixed platen to which a fixed mold is attached, and a rear plate is fixed to the guide post above the fixed platen. A movable platen to which the movable mold is attached is disposed between the fixed platen and the rear plate, and the movable platen is moved up and down along the guide post to open and close the mold.

  In the system in which the movable platen is guided by the guide post, there is a possibility that play may occur in the sliding portion between the guide post and the movable frame, and there is a possibility that a slight displacement may occur between the movable mold and the fixed mold. is there. In addition, the movable portion and the center of gravity of the driving portion that drives the movable portion with respect to the guide post may be biased with respect to the guide post. In such a case, the guide post may fall slightly and the horizontal position of the movable part with respect to the fixed part may be shifted. When such a position shift occurs, the dimensional accuracy of the molded product may be deteriorated.

  Therefore, in order to prevent the deterioration of the positional accuracy caused by the above-described guide post, it has been proposed to use a linear guide instead of the guide post (see, for example, Patent Document 2).

  The linear guide is a linear guide mechanism that minimizes play between the fixed rail and the movable part, and can move the movable part straight with high accuracy. Therefore, the movable mold can be moved with high positional accuracy by moving the movable platen, to which the movable mold is attached, up and down while being guided by the linear guide.

  As described above, in the rigid injection molding machine, the movable platen is disposed above the fixed platen, and the mold is opened and closed by moving the movable platen in the direction perpendicular to the fixed platen. As described above, when the movable platen is disposed above the fixed platen, an injection device is often provided on the movable platen side in order to supply the resin to be injected into the mold from above.

In addition, the rigid injection molding machine is often used for molding a precise molded product, and it is necessary to accurately measure the molten resin and inject it into the mold. For this reason, the injection device of a rigid injection molding machine is often a pre-plastic type. The pre-plastic type is a system in which a resin melted in advance by a plasticizing apparatus is weighed in a necessary amount and supplied to a cylinder, and a plunger in the cylinder is driven to inject the molten resin from the cylinder into a mold. Therefore, the plasticizing device and the cylinder are provided on the movable platen side, and the weight of the movable part tends to increase. When the weight of the movable part increases, the guide mechanism for guiding the movement of the movable part must be made robust.
JP-A-11-170297 JP 2004-90428 A

  In a linear injection molding machine, when a linear guide is used as a guide for a movable platen, the fixed rail of the linear guide is fixed to a fixed frame on the lower side of the movable platen and extends between the fixed frame and the movable platen. It becomes composition. In this case, when a load is applied to the movable part such as the movable platen from the outside, a moment load is applied to the fixed rail supported by the fixed frame in a cantilever manner. As a result, the fixed rail is inclined, and the linearity of the movable platen may be deteriorated.

  In general, the fixed rail of the linear guide is attached and fixed to the fixed frame of the injection molding machine. Generally, the fixed frame is a relatively large structure. Since the surface to which the fixed rail of the linear guide is attached is required to be horizontal or flat, it is necessary to process the fixed frame with a processing machine having high processing accuracy. Unlike a general processing machine, a processing machine that processes a large structure with high accuracy limits a processing machine for processing a fixed frame. Moreover, even if it processes using such a processing machine, it is not easy to ensure the dimensional accuracy and flatness of a mounting surface.

  The present invention has been made in view of the above-described problems, and provides a rigid injection molding machine in which an injection device can be arranged with high positional accuracy with respect to a movable platen and can be moved with high accuracy. Objective.

In order to achieve the above-described object, according to the present invention, there is provided a rigid injection molding machine in which an injection device is disposed above a mold clamping device, the frame member provided around the injection device, and a plurality of vertical movement guide mechanism that is fixed relative to the frame member, the injection member is Ri vertical movable der while being guided by the vertical movement guiding mechanism, the vertical movement guide mechanism across the injection device A rigid injection molding machine characterized by being fixed to the frame member in a state of being opposed to each other .

In Ken-type injection molding machine according to the present invention, each of the prior SL vertical movement guide mechanism preferably includes a plurality of sliders movable along the guide rail and the guide rail.

  In the rigid injection molding machine according to the present invention, it is preferable that the injection device has a moving member guided by the vertical movement guide mechanism, and a cylinder of the injection device is fixed to the moving member. The mold clamping device includes a fixed platen and a movable platen provided so as to be vertically movable above the fixed platen, and a plasticizing movement driving unit is fixed as a driving unit for vertically moving the injection device. It is good also as arrange | positioning under the platen and the said moving member being connected with the said plasticizing movement drive part by the several plasticizing movement rod.

  According to the present invention, the moving member of the injection device is guided in the vertical direction by the vertical moving mechanism provided inside the frame member, and the cylinder is fixed to the moving member. The nozzle can be accurately positioned. In addition, since the frame member is provided on the outside as a framework structure so as to surround the injection device, the frame member can be given rigidity to prevent bending due to the weight of the injection device and inclination of the vertical movement guide mechanism. Highly accurate movement of the injection apparatus can be realized.

  A pre-plastic type rigid injection molding machine according to an embodiment of the present invention will be described with reference to the drawings.

  First, an overall configuration of a pre-plastic type rigid injection molding machine according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a front view showing a schematic configuration of a pre-plastic type rigid injection molding machine according to an embodiment of the present invention.

  The pre-plated solid injection molding machine shown in FIG. 1 has a fixed platen 10 and a movable platen 12. The movable platen 12 is disposed above the fixed platen 10 and is movable in the vertical direction with respect to the fixed platen 10.

  The stationary platen 10 is attached to the upper surface of the lower frame 20. The lower frame 20 is a frame-like structure in which, for example, steel square pipe members are assembled to form a rectangular parallelepiped, and a fixed plate 22 to which the fixed platen 10 is attached is provided on the upper surface thereof. A mold clamping drive unit 24 for vertically moving the movable platen 12 is provided inside the lower frame 20.

  The mold clamping drive unit 24 is attached to the lower surface of the fixed plate 22, and the mold clamping drive unit 24 itself is configured to move in a direction perpendicular to the fixed plate 22. A plurality of tie bars 26 extend from the mold clamping drive unit 24 through the fixed plate 22 and the fixed platen 10. The movable platen 12 is fixed to the upper end portion of the tie bar 26. When the mold clamping drive unit 24 is driven to move vertically with respect to the fixed plate 22, the tie bar 26 also moves vertically together with the mold clamping drive unit 24, so that the movable platen 12 fixed to the tie bar 26 is attached to the fixed plate 22. The fixed platen 10 is moved. Thereby, opening and closing of a metal mold | die and mold clamping can be performed.

  The pre-plastic type solid injection molding machine shown in FIG. 1 has an injection device 30 above the movable platen 12. The injection device 30 includes a cylinder 32 having a plunger therein and a drive mechanism 34 for driving the plunger. The cylinder 32 and the drive mechanism 34 are attached to a front flange 36 that is a moving member that is movable in the vertical direction, and the front flange 36 is supported on the left and right sides by two L-shaped support plates 38. The L-shaped support plate 38 is attached to the upper frame 50 through a linear guide 40 and a guide support plate 42 so as to be vertically movable.

  The upper frame 50 is a frame-like structure that is firmly attached on the lower frame 20, and is a frame-like body that is assembled, for example, by a steel square pipe to form a rectangular parallelepiped by bolting or welding. In the present embodiment, two rectangular frame bodies 52 are formed by a frame member 54 such as a square pipe, and a frame member 54 serving as a beam is connected between the two frame bodies 52 to form a rectangular parallelepiped frame body. A frame 50 is formed. The upper frame 50 is attached to the lower frame 20 and constitutes a surrounding frame that integrally surrounds the rigid injection molding machine. Therefore, the rigid injection molding machine according to the present embodiment has a structure in which the mold clamping device and the injection device are attached to the surrounding frame formed by the upper frame 50 and the lower frame 20.

  A plasticizing movement rod 44 extends downward from an L-shaped support plate 38 that is vertically movable with respect to the upper frame 50 via a linear guide 40. The lower end portion of the plasticizing movement rod 44 extends downward through the fixed platen 10 and the fixed plate 22, and is attached to the plasticizing movement drive unit 28 attached to the mold clamping drive unit 24. Since the plasticizing movement drive unit 28 moves in the vertical direction together with the mold clamping drive unit 24, when the mold clamping drive unit 24 moves, the plasticizing movement rod 44 also moves, whereby the injection device 30 moves together with the movable platen 12. Move vertically.

  Further, the plasticizing movement drive unit 28 can move the plasticizing movement rod 44 separately from the mold clamping drive unit 24. By vertically moving the plasticizing movement rod 44 by the plasticizing movement driving unit 28, the injection device 30 can be moved so as to approach and separate from the movable platen 12. That is, the plasticizing movement rod 44 is vertically moved by the plasticizing movement driving unit 28 to press the injection nozzle of the cylinder 32 of the injection apparatus 30 against the movable mold attached to the movable platen 12 (nozzle touch). Thus, the molten resin can be injected from the injection nozzle into the mold.

  FIG. 2 is a perspective view showing the structure above the fixed plate 22. FIG. 2 shows a state in which the upper frame 50 and the guide support plate 42 are removed. In FIG. 2, the L-shaped support plate 38 is removed from the front flange 36 and separated.

  Although not shown in FIG. 1, a pair of guide support members 60 are fixed to the fixed platen 10. A linear guide rail is attached to the guide support member 60, and the vertical movement of the movable platen 12 is guided by the linear guide. The movable platen 12 is driven by four tie bars 26 that pass through the fixed platen 10 and are fixed to the movable platen 12 while being guided by the linear guide of the guide support member 60.

  Although not shown in FIG. 1, the pair of L-shaped support plates 38 are connected and fixed by a connection plate 46 having an opening at the center. The upper ends of the two plasticizing moving rods 44 extending through the fixed platen 10 are connected to and fixed to the connection plate 46. Therefore, the pair of L-shaped support plates 38 can be moved vertically by moving the plasticizing moving rod 44 vertically. The guide for the vertical movement at this time is performed by the linear guide 40 which is a vertical movement guide mechanism provided two by two on each L-type support plate 38. The linear guide 40 is configured such that the inclination in the vertical plane is adjusted by an inclination adjusting mechanism for guiding the L-shaped support plate 38 in the vertical direction with high accuracy. Details of the linear guide 40 and the tilt adjusting mechanism will be described later.

  The front flange 36 which is a moving member is fixed by a fixing / adjusting mechanism in a state where the front flange 36 is placed on a portion extending in the horizontal direction of the pair of L-shaped support plates 38. The horizontal position of the front flange 36 with respect to the pair of L-shaped support plates 38 can be adjusted by a horizontal adjustment mechanism. Details of the leveling mechanism will be described later.

  A cylinder 32 of the injection device 30 is attached to the lower surface of the front flange 36, and the cylinder 32 extends downward through the opening of the connection plate 46. Four guide rods 33 extend upward from the front flange 36, and the rear flange 35 is fixed to the upper end of the guide rod 33. A pressure plate 37 that is movable along the guide rod 33 is provided between the front flange 36 and the rear flange 35.

  A plunger that applies pressure to the molten resin in the cylinder 32 is connected to the pressure plate 37. By moving the pressure plate 37 along the guide rod 33, the plunger is moved and the molten resin is injected from the injection nozzle of the cylinder 32. A moving mechanism for moving the pressure plate 37 is provided between the rear flange 35 and the pressure plate 37, and the pressure plate 37 is moved with respect to the rear flange 35 fixed to the guide rod 33. The rear flange 35, the pressure plate 37, the moving mechanism, and the like constitute a drive mechanism 34 for driving the plunger.

  Although not shown in FIG. 2, a plasticizing device is attached below the front flange 36. The plasticizing apparatus has a hopper that supplies resin, a screw that measures the resin while melting it, and supplies it to the cylinder 32, and a metering motor that drives the screw. The tip of the screw is attached in a state protruding from the outer peripheral surface of the cylinder 32 into the cylinder 32, and the molten resin is supplied into the cylinder 32 from the tip of the screw. The supplied molten resin is pressurized by the plunger in the cylinder 32 and is injected from the nozzle at the tip of the cylinder 32.

  In the above-described embodiment, the case of a pre-plastic type rigid injection molding machine is shown and described. However, in the case of a normal rigid injection molding machine, instead of the plunger arranged in the cylinder 32, it rotates at the time of metering. A screw that moves forward and backward during injection is provided.

  Next, the mounting structure of the linear guide 40 will be described with reference to FIG. FIG. 3 is a perspective view showing the linear guide 40 attached to the upper frame 50 and guiding the vertical movement of the L-shaped support plate 38 and its tilt adjusting mechanism.

  Each linear guide 40 has a guide rail 40A fixed to the guide support plate 42 and a slider 40B which is a movable part fixed to the L-shaped support plate 38, and the slider 40B moves along the guide rail 40A. It is configured as follows. Although the slider 40B is fixed to the L-shaped support plate 38, FIG. 3 also shows a state in which the slider 40B is attached to the guide rail 40A for convenience of illustration.

  The upper frame 50 is a rectangular parallelepiped frame-like structure as shown in FIG. A rib 56 is joined by welding or the like between the orthogonal frame members 54, and the upper frame 50 is reinforced by the rib 56. A processing plate 58 for processing surface joining is joined to the vertical frame member 54 of the frame body 52 of the upper frame 50 by welding or the like. The processing plate 58 is a metal plate member for providing a machined surface for fixing the guide support plate 42 to the upper frame 50, and is paired with one frame body 52 while being joined to the frame body 52. The machining plate 58 is machined to form one vertical plane. The upper frame 50 is attached to the lower frame 20 so that the machining surface of the processing plate 58 is vertical.

  The guide rail 40A of the linear guide 40 is firmly fixed to the inner surface of the guide support plate 42 that is a support plate. The two guide rails 40A fixed to each guide support plate 42 need to be parallel to each other and have a constant interval. In order to attach each guide rail 40A accurately and firmly, for example, a step is provided on the inner surface of the guide support plate 42 by machining, and the guide rail 40A is fixed by pressing the guide rail 40A against the step. It can be firmly and accurately attached to the guide support plate 42 (see FIG. 4 for the steps).

  The guide support plate 42 has openings 42a and 42b serving as maintenance windows between and outside the pair of guide rails 40A. The injection device and the like in the upper frame 50 can be seen through the openings 42a and 42b, and an adjustment operation described later can be performed by inserting a tool or the like.

  The guide support plate 42 is attached to the processing plate 58 of the frame 52 and is fixed by bolts or the like. A positioning pin 59 protrudes and is fixed to one of the pair of processing plates 58 of each frame 52. On the other hand, the guide support plate 42 is provided with positioning holes 42 c at positions corresponding to the positioning pins 59. When the guide support plate 42 is attached to the processing plate 58 of the frame body 52, the guide support plate 42 is attached to the frame body 52 by fitting the positioning holes 42 c of the guide support plate 42 into the positioning pins 59 of the processing plate 58. Can be positioned. Bolt holes for fixing the guide support plate 42 are made into fool holes (a relatively large hole with respect to the diameter of the bolt), so that the guide support plate 42 is rotated slightly within the mounting surface around the positioning pin 59. Thereby, the inclination in the vertical plane of the guide rail 40A can be adjusted. Even after the guide support plate 42 is assembled, the inclination of the guide rail 40A can be adjusted by loosening the bolts and slightly rotating the guide support plate 42. Thus, the mechanism for slightly rotating the guide support plate 42 is the tilt adjusting mechanism.

  The slider 40B of the linear guide 40 is fixed to the vertical surface of the L-shaped support plate 38 with a bolt or the like. Similarly to the above-described mechanism for fixing the guide support plate 42, the slider 40B fixing mechanism is provided with a pin at one position of the slider 40B, and this pin is fitted into the positioning hole of the L-shaped support plate 38 to make one point. The slider 40B may be slightly rotated and adjusted by positioning and placing other bolt holes as stupid holes. Thereby, the slider 40B can be attached and fixed to the L-shaped support plate 38 with high accuracy.

  In the present embodiment, two sliders 40B are provided for one guide rail 40A. Thus, by providing a plurality of sliders 40B for one guide rail 40A, play in the linear guide 40 is substantially reduced, and the highly accurate guide function of the linear guide 40 is maintained for a long time. . It is preferable to increase the distance between the sliders 40B within a possible range.

  A rib 38 a is provided on the orthogonal surface of the L-shaped support plate 38. Thereby, deformation of the L-shaped support plate is suppressed, and the perpendicularity of the orthogonal surfaces is maintained. In addition, the L-type support plate 38 is provided with two horizontal adjustment plate 38b. Similar to the ribs 38a, the leveling plate 38b has a reinforcing function, but is provided for adjusting the position of the front flange 36, which will be described later, in the horizontal direction.

  As described above, according to the present embodiment, the moving direction of the injection device 30 by the linear guide 40 can be finely adjusted by slightly rotating the guide support plate 42 by the tilt adjusting mechanism. Therefore, when the injection device 30 is assembled to the upper frame 50, the center axis of the cylinder 32 of the injection device 30 can be easily adjusted with high accuracy so as to coincide with the vertical direction.

  Next, a horizontal adjustment mechanism for adjusting the horizontal position of the front flange 36 with respect to the L-shaped support plate 38 will be described with reference to FIG. FIG. 4 is a plan view of the L-shaped support plate 38 and the front flange 36 fixed thereto. FIG. 4 shows a state in which the drive unit of the injection device 30 attached on the front flange 36 is removed. In FIG. 4, the frame member 54 of the upper frame 50 is shaded for easy identification.

  The left and right L-shaped support plates 38 are guided by four linear guides 40 provided between the left and right guide support plates 42 and are movable in the vertical direction (direction perpendicular to the paper surface). The front flange 36 is fixed by a bolt or the like in a state where it is placed on the horizontal portion of the left and right L-shaped support plates 38. The left and right L-shaped support plates 38 are fixed to both sides of the connection plate 46 as shown in FIG. Therefore, the connection plate 46, the left and right L-shaped support plates 38, and the front flange 36 can be moved together.

  As shown in FIG. 2, a plasticizing movement rod 44 is fixed to the lower surface of the connection plate 46. By moving the plasticization movement rod 44 up and down, the connection plate 46, the left and right L-shaped support plates 38, The front flange 36 can be moved vertically. Thereby, the injection device 30 attached to the front flange 36 can be moved in the vertical direction while being guided by the linear guide 40.

  The horizontal position of the movable platen 12 is determined by a guide support member 60 attached to the fixed platen 10 as shown in FIG. On the other hand, the horizontal position of the injection device 30 is determined by the position of the front flange 36. Therefore, in order to make the central axis of the cylinder 32 of the injection device 30 coincide with the central axis of the locating hole 12a (see FIG. 2) of the movable platen 12, the horizontal direction of the front flange 36 to which the injection device 30 is fixed. It is necessary to adjust the position.

  In the present embodiment, a horizontal adjustment mechanism is provided to adjust the horizontal position of the front flange 36. The leveling mechanism includes a positioning portion 36a that protrudes from the left and right side portions of the front flange 36, and bolts 36A and 36B that can slightly move and temporarily fix the positioning portion 36a.

  The positioning portion 36a protrudes from the side portion of the front flange 36, and includes an end surface 36a-1 parallel to the side portion of the front flange 36, and two side surfaces 36a-2 and 36a-3 orthogonal to the end surface 36a-1. Have. The positioning portion 36 a is configured to extend between the two horizontal adjustment plate 38 b of the L-shaped support plate 38. Therefore, when the front flange 36 is placed on the horizontal portion of the L-shaped support plate 38, the end surface 36a-1 of the positioning portion 36a faces the vertical surface of the L-shaped support plate 38, and the side surfaces 36a-2 and 36a. -3 is in a state of facing the horizontal adjustment plate 38b.

  A bolt 36A is screwed into a portion of the L-shaped support plate 38 facing the end surface 36a-1 of the positioning portion 36a, and a fixing nut 36C is provided on the bolt 36A. In addition, a bolt 36B is screwed into a portion of the horizontal adjustment pad 38b facing the side surfaces 36a-2 and 36a-3 of the positioning portion 36a, and a fixing nut 36D is provided on the bolt 36B. It has been.

  In the horizontal adjustment mechanism configured as described above, the front flange 36 in the extending direction of the bolt 36A is positioned by bringing the heads of the left and right bolts 36A into contact with the end surface 36a-1 of the positioning portion 36a. The front flange 36 is positioned in the extending direction of the bolt 36B by bringing the head of the bolt 36B into contact with the side surfaces 36a-2 and 36a-3 of the positioning portion 36a. Thereby, the position of the front flange 36 can be finely adjusted while moving in a horizontal plane orthogonal to the central axis of the cylinder 32 of the injection device 30. When the fine adjustment is completed, the bolts 36A and 36B are fixed by tightening the nuts 36C and 36D. Then, the front flange 36 positioned in the horizontal plane is fixed to the connection plate 46 and the left and right L-shaped support plates 38 with bolts or the like.

  A plasticizing device 70 is attached to the lower surface of the front flange 36. In FIG. 4, the metering motor 72 of the plasticizing device 70 is shown below the front flange 36. In addition, a hopper mounting plate 74 that is a portion to which the hopper of the plasticizing device 70 is mounted appears in the notch portion of the front flange 36.

  As described above, in the present embodiment, since the horizontal adjustment mechanism that finely adjusts the position of the front flange 36 in the horizontal plane is provided, the front flange 36 can be easily and accurately positioned. Therefore, the central axis of the cylinder 32 of the injection device 30 attached to the front flange 36 can be made to coincide with the central axis of the locating hole 12a of the movable platen 12 with high accuracy. Thereby, the injection nozzle of the cylinder 32 of the injection device 30 can be accurately connected to the injection hole of the movable mold attached to the movable platen 12.

  In the present embodiment, since the linear guide for guiding the vertical movement of the movable platen 12 and the linear guide for guiding the vertical movement of the injection device 30 are separately provided, the position and moving direction of the injection device 30 can be easily adjusted. You can do it. Further, by providing an adjustment mechanism that separately adjusts the horizontal position and inclination of the injection device 30, the position and inclination of the injection device can be adjusted more easily and with high accuracy.

1 is a front view showing a schematic configuration of a pre-plastic type rigid injection molding machine according to an embodiment of the present invention. It is a perspective view which shows the structure above a fixing plate in FIG. It is a perspective view which shows the linear guide attached to an upper frame, and guides the perpendicular | vertical movement of an L-shaped support plate, and its inclination adjustment mechanism. It is a top view of an L-shaped support plate and the front flange fixed to it.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fixed platen 12 Movable platen 12a Locating hole 20 Lower frame 22 Fixed plate 24 Mold clamping drive part 26 Tie bar 28 Plasticizing movement drive part 30 Injection apparatus 32 Cylinder 33 Guide rod 34 Drive mechanism 35 Rear flange 36 Front flange 36a Positioning part 36a-1 End face 36a-2, 36a-3 Side face 36A, 36B Bolt 36C, 36D Nut 37 Pressure plate 38 L-type support plate 38a Rib 38b Horizontal adjustment pad 40 Linear guide 40A Guide rail 40B Slider 42 Guide support plate 42a, 42b Opening 42c Positioning hole 44 Plasticizing rod 46 Connection plate 50 Upper frame 50
52 Frame body 54 Frame member 56 Rib 58 Processing plate 59 Positioning pin 60 Guide support member 70 Plasticizing device 72 Measuring motor 74 Hopper mounting plate

Claims (4)

A rigid injection molding machine in which an injection device is disposed above a mold clamping device,
A frame member provided around the injection device;
A plurality of vertical movement guide mechanisms fixed to the frame member,
The injection member is Ri vertical movable der while being guided by the vertical movement guiding mechanism,
The rigid injection molding machine, wherein the vertical movement guide mechanism is fixed to the frame member in a state of being opposed to the injection device . The rigid injection molding machine according to claim 1,
Each of the vertical movement guide mechanisms includes a guide rail and a plurality of sliders movable along the guide rail. The rigid injection molding machine according to claim 1,
The injection apparatus has a moving member guided by the vertical movement guide mechanism, and a cylinder of the injection apparatus is fixed to the moving member. A rigid injection molding machine according to claim 3 ,
The mold clamping device includes a fixed platen and a movable platen provided so as to be vertically movable above the fixed platen.
A plasticizing movement drive unit is disposed below the fixed platen as a drive unit for vertically moving the injection device,
The rigid injection molding machine, wherein the moving member is connected to the plasticizing moving drive unit by a plurality of plasticizing moving rods.

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