JP6202160B1 - Injection molding apparatus, method for manufacturing injection molding apparatus, and method for supporting sub-injection unit - Google Patents

Abstract

An injection molding apparatus, a method of manufacturing an injection molding apparatus, and a method of supporting a sub injection unit capable of firmly attaching a sub injection unit to a mold mounting plate or a mold. SOLUTION: At least two mold mounting plates facing each other, a mold mounted directly or indirectly on each of the mold mounting plates, and a cavity formed by clamping the molds to each other An injection molding apparatus comprising a main injection unit arranged to be able to inject molten resin, and a sub-injection unit formed smaller than the main injection unit and arranged to be able to inject molten resin into a cavity, A support member for attaching the sub injection unit to one of the mold mounting boards or one of the molds is further provided, and the support member supports the sub injection unit in a direction crossing the mold opening / closing direction of the mold. It is configured. [Selection] Figure 1

Description

  The present invention relates to an injection molding apparatus including a sub injection unit, a method for manufacturing the injection molding apparatus, and a method for supporting the sub injection unit.

  Conventionally, a multi-color multi-material injection molding apparatus having a plurality of injection units of substantially the same size is widely used as an injection molding apparatus dedicated to a multilayer molded article for molding a multilayer molded article using a plurality of colors or types of resin materials. It has been. Such a conventional multi-color multi-material injection molding apparatus can be suitably used when a plurality of colors or a plurality of types of resin materials used in one laminated molded product have substantially the same injection filling amount. On the other hand, there is a clear difference in the injection filling amount between multiple colors or multiple types of resin materials, such as the main material and sub-material, and the injection filling of other sub-materials with respect to the injection filling amount of the main material When the amount is small, the secondary material is held in a plasticized state for a long time with respect to the main material in the injection unit for injecting and filling the secondary material, which may cause a deterioration in the quality of the secondary material. In addition, the mold cavity into which the secondary material is injection-filled is often unevenly distributed at a plurality of locations as compared with the mold cavity into which the main material is injection-filled. Due to the length of the path (hot runner), the mold structure becomes complicated, and the length of the resin flow path for the secondary material increases, so the holding time in the plasticized state in the resin flow path A further problem arises in that there is a risk of increasing the quality of the secondary material.

  Therefore, conventionally, when the injection filling amount of the other sub-materials is smaller than the injection filling amount of the main material, a small-sized sub injection unit is retrofitted to a general-purpose injection molding apparatus having one main injection unit. An injection molding apparatus is suitably used (Patent Document 1).

  Patent Document 1 includes a main injection unit for a main material (first injection machine) and a sub injection unit for a secondary material (second injection machine), and the sub injection unit is directly attached to a mold, An injection molding apparatus in which an injection nozzle of a sub injection unit is urged by an elastic member so as to be in close contact with a sprue (resin supply port) of a mold is disclosed.

JP 2003-053770 A

  However, since the injection molding apparatus of Patent Document 1 has a configuration in which an elastic member such as a spring is interposed between the sub injection unit and the mold, the sub injection unit cannot be firmly fixed to the mold. There is a problem.

  Moreover, since the injection molding apparatus of patent document 1 is the structure which presses the injection nozzle of a sub injection unit with an elastic member, the clearance for sliding between related members is needed for the sliding part of a related member. . For this reason, in the injection molding apparatus of patent document 1, there exists a problem that there exists a possibility that a sub injection unit may move also to directions other than the urging | biasing direction of an elastic member by presence of such clearance.

  Due to these problems, in the injection molding apparatus of Patent Document 1, the sub-injection unit is fixed to the mold or the elastic member by vibration generated by the mold opening / closing operation, the mold clamping operation, the injection filling operation, and the like. In addition to the static load of the injection unit, a dynamic load repeatedly acts, so that there is a problem that the fixing part and the elastic member may be damaged. Moreover, in the injection molding apparatus of Patent Document 1, the injection nozzle and the metal mold are pressed because the injection nozzle pressed against the resin supply port of the mold slides in an unintended direction with respect to the resin supply port due to the vibration described above. There is a problem that the resin supply port of the mold may be worn or damaged.

  The present invention has been made in view of the above circumstances, and an object thereof is an injection molding apparatus capable of firmly attaching a sub-injection unit to a mold mounting plate or a mold, and a method for manufacturing the injection molding apparatus. And a method of supporting the sub-injection unit.

  An injection molding apparatus according to the present invention includes at least two mold mounting plates facing each other, a mold mounted directly or indirectly on each of the mold mounting plates, and the molds clamped together. A main injection unit disposed so as to be capable of injecting molten resin into the formed cavity, and a sub-injection unit formed smaller than the main injection unit and disposed so as to be capable of injecting molten resin into the cavity; An injection molding apparatus comprising: a support member that attaches the sub injection unit to one of the mold mounting boards or one of the molds, and the support member has a mold opening / closing direction of the mold. The sub-injection unit is configured to be supported in the intersecting direction.

  In the injection molding apparatus according to the present invention, the support member has a cross section having a fixed surface fixed to one of the mold mounting plates or one of the molds, and a support surface extending in a direction intersecting the fixed surface. The sub-injection unit may be configured to support the sub-injection unit on the support surface.

  On the other hand, in the injection molding apparatus according to the present invention, the support member includes a fixed surface fixed to one of the mold mounting plates or one of the molds, and a pair of support surfaces extending in a direction intersecting the fixed surface. The cross-sectional shape of the sub-injection unit may be supported between the pair of support surfaces.

  Further, in the injection molding apparatus according to the present invention, the support member has a mold mounting plate having a fixed surface fixed to one of the mold mounting plates and a mold mounting surface to which one of the molds is mounted. And the sub injection unit may be supported on the mold mounting surface.

  Furthermore, the injection molding apparatus according to the present invention further includes a plurality of tie bars that penetrate the mold mounting plate, and the support member is provided across a pair of adjacent tie bars, and the sub-injection unit is provided. It may have a supporting surface to support.

  In the injection molding apparatus according to the present invention described above, the sub injection unit includes a sub injection unit between a position where the injection nozzle is connected to one of the molds and a position where the injection nozzle is separated from the mold. A sub-injection unit moving mechanism for moving the injection unit back and forth with respect to the mold may be further provided.

  On the other hand, in the above-described injection molding apparatus according to the present invention, the sub-injection unit has either an injection nozzle connected to one of the mold mounting plates or one of the molds, or a fixed state. In this state, it may be fixed to the support member.

  The above-described injection molding apparatus according to the present invention includes a plurality of tie bars penetrating the mold mounting plate, one end portion attached to at least one of the plurality of tie bars, and the other end portion to the sub injection unit. An auxiliary support member attached to the sub-injection unit, wherein the sub-injection unit is configured to support the injection nozzle in one of a state where the injection nozzle is connected to the mold mounting plate or the mold and a state where the injection nozzle is fixed. It is preferable to be fixed to the member.

  The method of manufacturing an injection molding apparatus according to the present invention includes at least two opposed mold mounting plates, a mold that is directly or indirectly mounted on each of the mold mounting plates, and the molds that are mutually molded. A main injection unit arranged to be able to inject molten resin into a cavity formed by fastening, and a sub formed to be smaller than the main injection unit and arranged to inject molten resin into the cavity A method of manufacturing an injection molding apparatus comprising an injection unit, the mold using a support member configured to support the sub injection unit in a direction intersecting a mold opening / closing direction of the mold The sub-injection unit is attached to one of the mounting boards or one of the molds.

  The sub-injection unit support method according to the present invention includes at least two opposing mold mounting boards, a mold attached directly or indirectly to each of the mold mounting boards, and the mold. In contrast to an injection molding apparatus comprising a main injection unit arranged to be able to inject molten resin into a cavity formed by clamping together, the mold is smaller than the main injection unit, A support method for attaching a sub injection unit configured to be able to inject molten resin, wherein the support member is configured to support the sub injection unit in a direction intersecting a mold opening / closing direction of the mold. The sub-injection unit is attached to one of the mold mounting boards or one of the molds.

  On the other hand, a method for supporting a sub injection unit according to the present invention includes at least two opposed mold mounting plates and a mold mounted directly or indirectly on each of the mold mounting plates. It is possible to inject molten resin into a cavity that contains at least the plate-shaped material that has been press-molded in a press machine that places plate-shaped material between molds and press-molds the plate-shaped material. Using a support member configured to support the sub injection unit in a direction intersecting a mold opening / closing direction of the mold, The sub injection unit is attached to one of the mold mounting boards or one of the molds.

  ADVANTAGE OF THE INVENTION According to this invention, the injection molding apparatus which can attach a sub injection unit firmly with respect to a metal mold | die mounting board or a metal mold | die, the manufacturing method of an injection molding apparatus, and the support method of a sub injection unit can be provided. .

It is a front view which shows roughly the structure of the injection molding apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the internal structure of a sub injection unit roughly. FIG. 3A is a schematic view showing the sub-injection unit and the support member shown in FIG. 1 as viewed from the direction of arrow A, and FIG. 3B is the sub-injection unit and the support member shown in FIG. It is the schematic which shows the state which looked at from the B arrow direction. FIG. 4A is an enlarged front view schematically showing a sub-injection unit and a support member portion in the injection molding apparatus according to the second embodiment of the present invention, and FIG. It is the schematic which shows the state which looked at the sub injection unit and support member shown to a) from the C arrow direction. FIG. 5A is an enlarged front view schematically showing a sub injection unit and a support member portion in an injection molding apparatus according to the third embodiment of the present invention, and FIG. It is the schematic which shows the state which looked at the sub injection unit and support member shown to a) from D arrow direction. FIG. 6A is an enlarged front view schematically showing a sub injection unit and a supporting member portion in an injection molding apparatus according to the fourth embodiment of the present invention, and FIG. It is the schematic which shows the state which looked at the sub injection unit and support member shown to a) from the E arrow direction. FIG. 7A is an enlarged front view schematically showing a sub injection unit and a support member portion in an injection molding apparatus according to the fifth embodiment of the present invention, and FIG. It is the schematic which shows the state which looked at the sub injection unit and support member shown to a) from the F arrow direction. FIG. 8A is an enlarged front view schematically showing a sub-injection unit and a support member portion in an injection molding apparatus according to the sixth embodiment of the present invention, and FIG. It is the schematic which shows the state which looked at the sub injection unit and support member shown to a) from the G arrow direction. FIG. 9A is an enlarged front view schematically showing a sub-injection unit and a supporting member portion in an injection molding apparatus according to the seventh embodiment of the present invention, and FIG. It is the schematic which shows the state which looked at the sub injection unit and support member shown to a) from the H arrow direction. It is a perspective view which expands and schematically shows the sub injection unit and the support member part in the injection molding device concerning an 8th embodiment of the present invention. It is the schematic which expands and shows the sub injection unit, the support member part, and auxiliary support member in the injection molding apparatus which concerns on 9th Embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  First, a common configuration in the injection molding apparatus according to the first to ninth embodiments of the present invention will be described. The injection molding apparatus according to the first to ninth embodiments is configured by attaching a small sub-injection unit 30 to an injection molding apparatus main body including a main injection unit 3 using support members 20a to 20h. As the injection molding apparatus main body, for example, the horizontal injection molding apparatus main body 2 shown in FIG. 1 or the vertical injection molding apparatus main body 2 ′ shown in FIGS. 6 and 7 is preferably used. be able to.

  As the horizontal injection molding apparatus type injection molding apparatus main body 2, for example, as shown in FIG. 1, a main injection unit 3 for main material, a fixed plate (mold mounting plate) 4 fixed to a base 11, and End platen 8, movable platen (die mounting plate) 5 provided between fixed platen 4 and end platen 8 so as to be movable back and forth with respect to fixed platen 4; A stationary mold (mold) 6 attached indirectly via a movable mold (mold) 7 attached directly to the movable platen 5 or indirectly via a mold mounting plate, etc., The fixed platen 4, the movable platen 5 and the end platen 8 are provided between the four tie bars 9 penetrating the four corners of the fixed platen 4 and the end platen 8, and the movable platen 5 is fixed to the fixed platen 4. Use of an injection molding apparatus main body provided with a mold clamping mechanism 10 that moves forward and backward Kill. In this case, the fixed platen 4 is formed with a through hole extending from the back surface to the front surface (mold mounting surface), and the fixed mold 6 has a main injection unit at a position aligned with the through hole of the fixed platen 4. A resin supply port is formed. The main injection unit 3 has a nozzle portion connected to the resin supply port of the fixed mold 6 through the through hole of the fixed platen 4. The molten resin is configured to be injectable. In addition, the horizontal injection molding apparatus type injection molding apparatus main body 2 is not limited to the above-described description and illustrated aspects, and various known configurations can be arbitrarily adopted.

  On the other hand, as a vertical injection molding apparatus type injection molding apparatus main body 2 ', as shown in FIGS. 6 and 7, for example, a main injection unit (not shown) for main materials and a base (not shown) The four corners are connected to the fixed platen (die mounting plate) 4 'placed on the top, four tie bars 9' extending upward from the four corners of the fixed platen 4 ', and the upper end of the tie bar 9'. An end platen (not shown), and a movable platen (die mounting plate) 5 ′ provided between the fixed platen 4 ′ and the end platen so as to be movable back and forth along the tie bar 9 ′. A fixed mold (mold) 6 'mounted directly on the fixed plate 4' or indirectly through a mold mounting plate or the like, and directly or indirectly through a mold mounting plate or the like on the movable plate 5 '. A movable mold (mold) 7 'and a movable plate 5' fixed to the fixed plate 4 'are provided on the end platen. It can be used an injection molding apparatus body having a mold clamping mechanism for advancing and retracting for (not shown). Note that the vertical injection molding apparatus type injection molding apparatus main body 2 'is not limited to the above-described embodiment and the illustrated embodiment, and various known configurations can be arbitrarily adopted.

  As shown in FIG. 2, the sub injection unit 30 is a two-plate inline screw injection unit including a fixed frame 32 and a movable frame 33, and is smaller than the main injection unit 3. Specifically, the sub-injection unit 30 includes a fixed frame 32, a movable frame 33 provided to be movable relative to the fixed frame 32, and a movable frame drive mechanism 34 that moves the movable frame 33 forward and backward relative to the fixed frame 32. And a cylinder assembly 35 having a plasticizing screw shaft 35a for plasticizing a resin material as a secondary material, a plasticizing screw driving mechanism 36 for rotating the plasticizing screw shaft 35a, and a state in which a tip portion of the cylinder assembly 35 protrudes And a housing 31 surrounding each of the above components.

  The fixed frame 32 is fixed to the housing 31. On the other hand, the movable frame 33 is supported in a slidable state with respect to the fixed frame 32 as described later. The housing 31 may be a plate-like member as long as the fixing frame 32 can be fixed, or may be a form in which a cover member is attached to the plate-like member.

  The movable frame drive mechanism 34 includes an injection motor 34a provided on the fixed frame 32, a pair of ball screw nuts 34b embedded in the movable frame 33, and one end connected to the fixed frame 32 via a bearing 34c. A pair of ball screw shafts 34d whose ends are screwed to a ball screw nut 34b, an output shaft of the injection motor 34a, a plurality of injection pulleys 34e attached to the pair of ball screw shafts 34d, and a plurality of injection pulleys 34e A pulley belt 34f is provided. The movable frame drive mechanism 34 transmits the rotational force of the injection motor 34a to the pair of ball screw shafts 34d via the pulley belt 34f and the plurality of injection pulleys 34e, and the pair of ball screw shafts 34d is moved in the forward direction or the reverse direction. The movable frame 33 is configured to advance and retract with respect to the fixed frame 32 by rotating.

  The cylinder assembly 35 is provided with a cylindrical heating barrel 35c fixed to the fixed frame 32 so that a distal end portion extends outside the housing 31, a screw 35b provided in a predetermined region on the distal end portion side, and a base end portion serving as a bearing. And a plasticizing screw shaft 35a connected to the movable frame 33 through 35d. The heating barrel 35c has an injection nozzle at the tip, and is configured such that a pellet-shaped resin material as a secondary material can be input through a hopper (material supply port) (not shown). The heating barrel 35c is configured to be heated by a heating means (not shown) arranged on the outer periphery, and a predetermined region in which the screw 35b of the plasticizing screw shaft 35a is provided is located in the heating barrel 35c. Arranged to do. A check ring 35e is provided at the tip of the plasticizing screw shaft 35a to prevent backflow when the plasticized molten resin is injected from the injection nozzle of the heating barrel 35c.

  The plasticizing screw drive mechanism 36 includes a plasticizing motor 36a provided on the movable frame 33, a plurality of plasticizing pulleys 36b attached to the output shaft of the plasticizing motor 36a and the plasticizing screw shaft 35a, and a plurality of plasticizing. And a pulley belt 36c stretched around the pulley 36b. The plasticizing screw drive mechanism 36 rotates the plasticizing screw shaft 35a by transmitting the rotational force of the plasticizing motor 36a to the plasticizing screw shaft 35a via the pulley belt 36c and the plurality of plasticizing pulleys 36b. It is configured.

  The cylinder assembly 35 having the above configuration is configured to plasticize (melt) the resin material introduced from the hopper by the heating by the heating barrel 35c and the shear heat by the rotation of the plasticizing screw shaft 35a. The cylinder assembly 35 performs measurement by rotating the plasticizing screw shaft 35a by the plasticizing screw driving mechanism 36 and moving the movable frame 33 and the plasticizing screw shaft 35a backward by the movable frame driving mechanism 34. The movable frame 33 and the plasticized screw shaft 35a are advanced by the movable frame drive mechanism 34 from the measurement completion position (retracted position), so that the plasticized molten resin is injected from the injection nozzle of the heating barrel 35c. Yes.

  The sub-injection unit 30 is not limited to the embodiment described and illustrated above, and may be various known as long as the sub-injection unit 30 is smaller than the main injection unit 3 and can be attached to a mold mounting plate or a mold. It is possible to arbitrarily adopt the injection unit.

  Next, different configurations in the injection molding apparatus according to the first to ninth embodiments of the present invention will be described. In the following description, for simplification of the drawing, the sub injection unit 30 is illustrated as a rectangular parallelepiped having a protruding portion corresponding to the heating barrel 35e.

[First Embodiment]
First, the injection molding apparatus according to the first embodiment will be described with reference to FIG. As shown in FIG. 1, the injection molding apparatus according to the first embodiment is a horizontal injection molding apparatus type injection molding apparatus main body 2, a support member 20a fixed to the injection molding apparatus main body 2, and a support member 20a. The sub-injection unit 30 is provided.

  As shown in FIGS. 1 and 3, the support member 20 a according to the first embodiment includes a fixed surface 21 a that is fixed to the mold mounting surface of the fixed platen 4, and a support surface 22 a that extends in a direction intersecting the fixed surface 21 a. Are formed in a substantially L-shaped cross section. The support member 20a is fixed to the mold mounting surface of the stationary platen 4 by fastening means such as bolts in a state where the support surface 22a is close to the upper surface of the fixed mold 6. Here, the intersection is intended to mean a state in which two objects intersect at a right angle (90 degrees) and an angle within a range that is increased or decreased by a predetermined angle from the right angle, and is not limited to a state that intersects at a right angle.

  The support surface 22a of the support member 20a is connected to the sub die via the sub injection unit moving mechanism 23a in a direction intersecting with the mold opening / closing direction of the fixed mold 6 and the movable mold 7 and downward in the vertical direction in the first embodiment. An injection unit 30 is arranged. The support surface 22a is formed with a through-hole through which the injection nozzle is inserted at a position aligned with the injection nozzle of the sub injection unit 30 (the tip of the heating barrel 35c).

  As shown in FIG. 3A, the sub injection unit moving mechanism 23a is attached to the pair of linear motion guide rails 24a erected on the support surface 22a and the sub injection unit 30, and is paired with the pair of linear motion guide rails 24a. And a drive means 26a such as a hydraulic cylinder that is provided on the support surface 22a and moves the sub injection unit 30 forward and backward relative to the support surface 22a. . The sub injection unit moving mechanism 23 a includes a position where the injection nozzle of the sub injection unit 30 is connected to a resin supply port 6 a formed on the upper surface of the fixed mold 6, and the injection nozzle is a resin supply port of the fixed mold 6. The sub injection unit 30 is configured to be able to advance and retreat with respect to the fixed mold 6 between the positions separated from 6a. The pair of linear motion guide rails 24a may be configured to stand directly on the support surface 22a, or on the support surface 22a or on the back surface of the fixed surface 21a (surface on the movable platen 5 side). It is good also as a structure fixed to the standing guide base (not shown). Moreover, since each component which comprises the sub injection unit moving mechanism 23a can employ | adopt various well-known structures, the detailed description is abbreviate | omitted.

  The injection molding apparatus according to the first embodiment having the above-described configuration includes a stationary platen 4 and a movable platen 5 (mold mounting plate), and a stationary plate attached directly or indirectly to the stationary platen 4 and the movable platen 5. Fixing of an injection molding apparatus main body 2 including a mold 6 and a movable mold 7 (mold), and a main injection unit 3 arranged so that molten resin can be injected into the cavities of the fixed mold 6 and the movable mold 7 A sub-unit formed on the mold mounting surface of the panel 4 (mold mounting panel) smaller than the main injection unit 3 and configured to inject molten resin into the cavities of the fixed mold 6 and the movable mold 7. The injection unit 30 can be manufactured by attaching it using a support member 20a configured to support the sub injection unit 30 in a direction crossing the mold opening / closing direction of the fixed mold 6 and the movable mold 7. .

  In the injection molding apparatus according to the first embodiment, the support member 20 a has been described as supporting the sub injection unit 30 on the upper surface side of the fixed mold 6. The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the support member 20a has been described as being fixed to the mold mounting surface of the fixed platen 4, but is not limited thereto, and is fixed to the mold mounting surface of the movable platen 5, and the upper surface side of the movable mold 7 The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the sub injection unit 30 has been described as being configured to be able to advance and retreat by the sub injection unit moving mechanism 23a. However, the sub injection unit 30 is not limited to this, and the injection nozzle is connected to the resin supply port 6a of the fixed mold 6. Further, in either one of the fixed states, the structure may be fixed to the support surface 22a of the support member 20a.

  Furthermore, in the injection molding apparatus according to the first embodiment, the support member 20a and the sub injection unit 30 are described as being attached to the horizontal injection molding apparatus type injection molding apparatus main body 2. However, the present invention is not limited thereto, and the support member is not limited thereto. 20a and the sub-injection unit 30 may be attached to a vertical injection molding apparatus type injection molding apparatus main body 2 'or a press apparatus having a vertical mold clamping mechanism similar to the injection molding apparatus main body 2'. Here, the press device includes at least two mold mounting plates facing each other and a die mounted directly or indirectly on each of the mold mounting plates, and a plate-like material is placed between the molds. The plate-shaped material is press-molded. As such a press apparatus, for example, various known techniques for plastically deforming a material with a press mold such as a press apparatus for press-molding a metal material and a press apparatus for pre-forming while heating a reinforcing fiber resin plate are used. A press device can be employed. Further, the press apparatus may be configured to insert a material molded by another injection molding machine or press apparatus and then clamp the mold, and to laminate and mold the resin component by the attached sub injection unit.

[Second Embodiment]
Next, an injection molding apparatus according to the second embodiment will be described with reference to FIG. The injection molding apparatus according to the second embodiment includes a horizontal injection molding apparatus type injection molding apparatus main body 2, a support member 20b fixed to the injection molding apparatus main body 2, and a sub injection unit 30 supported by the support member 20b. It has.

  As shown in FIG. 4, the support member 20 b according to the second embodiment includes a fixed surface 21 b that is fixed to the mold mounting surface of the fixed platen 4, and a support surface 22 b that extends in a direction intersecting the fixed surface 21 b. The cross section is substantially L-shaped. The support member 20b is a mold mounting surface of the fixed platen 4 by a fastening means such as a bolt so that the support surface 22b intersects the side surface of the fixed mold 6 at a position close to the side surface of the fixed mold 6. It is fixed to.

  The sub injection unit 30 is disposed on the support surface 22b of the support member 20b via the sub injection unit moving mechanism 23b so as to intersect the horizontal direction of the fixed mold 6 and the movable mold 7 in the direction of opening and closing. .

  The sub-injection unit moving mechanism 23b includes a pair of linear motion guide rails 24b provided on the support surface 22b and a linear motion rail attached to the sub-injection unit 30 and configured to be slidable along the pair of linear motion guide rails 24b. A moving guide block 25 b and driving means (not shown) such as a hydraulic cylinder for moving the sub injection unit 30 forward and backward with respect to the fixed mold 6 are provided. The sub injection unit moving mechanism 23b includes a position where the injection nozzle of the sub injection unit 30 is connected to a resin supply port 6b (see FIG. 4B) formed on the side surface of the fixed mold 6, and the injection nozzle The sub injection unit 30 is configured to be able to advance and retreat relative to the fixed mold 6 between the fixed mold 6 and the position separated from the resin supply port 6 b. The pair of linear motion guide rails 24b may be configured to be directly laid on the support surface 22b, or may be configured to be fixed to a guide base (not shown) laid on the support surface 22b. Also good. Further, the driving means can be provided at an arbitrary position of the support member 20b. Each component constituting the sub-injection unit moving mechanism 23b can employ various known configurations, and thus detailed description thereof is omitted.

  The injection molding apparatus according to the second embodiment having the above configuration is similar to the injection molding apparatus according to the first embodiment, using the support member 20b, the stationary platen 4 (die mounting plate) of the injection molding apparatus main body 2. It can be manufactured by attaching the sub injection unit 30 to the mold mounting surface.

  In the injection molding apparatus according to the second embodiment, the support member 20b has been described as supporting the sub injection unit 30 on the side surface side of the fixed mold 6. However, the present invention is not limited to this. The sub injection unit 30 may be supported on the upper surface side or the bottom surface side. Further, the support member 20b has been described as being fixed to the mold mounting surface of the fixed platen 4, but is not limited thereto, and is fixed to the mold mounting surface of the movable platen 5 so that the upper surface side of the movable mold 7 is reached. The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the sub injection unit 30 has been described as being configured to be advanced and retracted by the sub injection unit moving mechanism 23b. However, the sub injection unit 30 is not limited to this, and the injection nozzle is connected to the resin supply port 6b of the fixed mold 6. Further, it may be configured to be fixed to the support surface 22b of the support member 20b in any one of the fixed states. Furthermore, in the injection molding apparatus according to the second embodiment, the support member 20b and the sub injection unit 30 are described as being attached to the horizontal injection molding apparatus type injection molding apparatus main body 2. However, the present invention is not limited thereto, and the support member is not limited thereto. 20b and the sub-injection unit 30 may be attached to a vertical injection molding apparatus type injection molding apparatus main body 2 'or the above-described press apparatus having a vertical mold clamping mechanism similar to the injection molding apparatus main body 2'.

[Third Embodiment]
Next, an injection molding apparatus according to the third embodiment will be described with reference to FIG. The injection molding apparatus according to the third embodiment includes a horizontal injection molding apparatus type injection molding apparatus main body 2, a support member 20c fixed to the injection molding apparatus main body 2, and a sub injection unit 30 supported by the support member 20c. It has.

  As shown in FIG. 5, the support member 20 c according to the third embodiment includes a fixed surface 21 c fixed to the mold mounting surface of the fixed platen 4, and a pair of support surfaces 22 c extending in a direction intersecting the fixed surface 21 c. The cross section has a substantially U-shaped cross section. The support member 20c is a mold of the fixed platen 4 by a fastening means such as a bolt so that the pair of support surfaces 22c intersect the side surfaces of the fixed mold 6 at a position close to the side surface of the fixed mold 6. It is fixed to the mounting surface.

  The sub injection unit 30 is interposed between the pair of support surfaces 22c of the support member 20c via the sub injection unit moving mechanism 23c so as to intersect the horizontal direction of the stationary mold 6 and the movable mold 7 in the horizontal direction. Has been placed.

  The sub injection unit moving mechanism 23c is attached to the sub injection unit 30 and a pair of linear motion guide rails 24c provided on the pair of support surfaces 22c, and is slidable along the pair of linear motion guide rails 24c. Further, a linear motion guide block 25c and driving means (not shown) such as a hydraulic cylinder for moving the sub injection unit 30 forward and backward with respect to the fixed mold 6 are provided. One linear motion guide rail 24c is provided on one support surface 22c, and the other linear motion guide rail 24c is provided on the other support surface 22c. The sub injection unit moving mechanism 23c includes a position where the injection nozzle of the sub injection unit 30 is connected to a resin supply port 6c (see FIG. 5B) formed on the side surface of the fixed mold 6, and the injection nozzle The sub injection unit 30 is configured to be able to advance and retreat with respect to the fixed mold 6 between the fixed mold 6 and the position separated from the resin supply port 6 c. The pair of linear motion guide rails 24c may be configured to be laid directly on the support surface 22c, or may be configured to be fixed to a guide base (not shown) laid on the support surface 22c. Also good. Further, the driving means can be provided at any position of the support member 20c. Each component constituting the sub-injection unit moving mechanism 23c can employ various known configurations, and thus detailed description thereof is omitted.

  The injection molding apparatus according to the third embodiment having the above configuration is similar to the injection molding apparatus according to the first embodiment, using the support member 20c, the fixed plate 4 (die mounting plate) of the injection molding apparatus main body 2. It can be manufactured by attaching the sub injection unit 30 to the mold mounting surface. The support member 20c according to the third embodiment is configured to support the sub-injection unit 30 between a pair of support surfaces 22c erected in a direction intersecting the fixed surface 21c. In addition, the sub-injection unit 30 can be supported at a position closer to the stationary platen 4 than the support members 20a and 20b according to the second embodiment. For this reason, the support member 20c according to the third embodiment has a thin mold, and it is difficult to secure a sufficient installation space in the mold thickness direction, or the resin supply port 6c of the fixed mold 6 is the fixed platen 4. It can be particularly preferably used when it is formed at a position close to.

  In the injection molding apparatus according to the third embodiment, the support member 20c has been described as supporting the sub injection unit 30 on the side surface side of the fixed mold 6. However, the present invention is not limited to this. The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the support member 20c has been described as being fixed to the mold mounting surface of the fixed platen 4, but is not limited thereto, and is fixed to the mold mounting surface of the movable platen 5 so that the upper surface side of the movable mold 7 is reached. The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the sub injection unit 30 has been described as being configured to be advanced and retracted by the sub injection unit moving mechanism 23c. However, the sub injection unit 30 is not limited to this, and the injection nozzle is connected to the resin supply port 6c of the fixed mold 6. In addition, in any one of the fixed states, it may be configured to be fixed to the pair of support surfaces 22c of the support member 20c. Furthermore, in the injection molding apparatus according to the third embodiment, the support member 20c and the sub injection unit 30 have been described as being attached to the horizontal injection molding apparatus main body 2. However, the present invention is not limited to this, and the support member 20c and the sub-injection unit 30 may be configured to be attached to the vertical injection molding apparatus type injection molding apparatus main body 2 'or the above-described press apparatus having the same vertical mold clamping mechanism as the injection molding apparatus main body 2'.

[Fourth Embodiment]
Next, an injection molding apparatus according to the fourth embodiment will be described with reference to FIG. The injection molding apparatus according to the fourth embodiment includes a vertical injection molding apparatus type injection molding apparatus main body 2 ′, a support member 20d fixed to the injection molding apparatus main body 2 ′, and a sub-injection supported by the support member 20d. Unit 30.

  As shown in FIG. 6, the support member 20d according to the fourth embodiment has a fixed surface 21d fixed to the movable mold 7 'and a support surface 22d extending in a direction intersecting the fixed surface 21d. It is formed in a letter shape. The support member 20d has a fixed surface 21d fixed to one side surface of the movable mold 7 ′ by fastening means such as a bolt so that the support surface 22d intersects the side surface of the movable mold 7 ′.

  The sub injection unit 30 is disposed on the support surface 22d of the support member 20d via the sub injection unit moving mechanism 23d so as to intersect the horizontal direction of the fixed mold 6 ′ and the movable mold 7 ′. ing.

  The sub injection unit moving mechanism 23d is a pair of linear motions similar to the sub injection unit moving mechanism 23b according to the second embodiment, except that the sub injection unit 30 is configured to move the sub injection unit 30 forward and backward with respect to the movable mold 7 ′. A guide rail 24d, a linear motion guide block 25d, and a driving means (not shown) are provided, and the sub injection unit 30 can be moved back and forth. The pair of linear guide rails 24d may be configured to be directly laid on the support surface 22d, or may be configured to be fixed to a guide base (not shown) laid on the support surface 22d. Also good. Further, the driving means can be provided at an arbitrary position of the support member 20d. Each component constituting the sub-injection unit moving mechanism 23d can employ various known configurations, and thus detailed description thereof is omitted.

  The injection molding apparatus according to the fourth embodiment having the above configuration is manufactured by attaching the sub injection unit 30 to the side surface of the movable mold 7 ′ (mold) of the injection molding apparatus main body 2 ′ using the support member 20d. can do.

  In the injection molding apparatus according to the fourth embodiment, the support member 20d has been described as being fixed to the side surface of the movable mold 7 '. However, the present invention is not limited to this, and the support member 20d is fixed to the side surface of the fixed mold 6'. The sub-injection unit 30 may be supported on the side surface of the fixed mold 6 ′. Further, the sub injection unit 30 has been described as being configured to be advanced and retracted by the sub injection unit moving mechanism 23d, but the present invention is not limited to this, and the injection nozzle is a resin supply port (not shown) of the movable mold 7 '. It is good also as a structure fixed to the support surface 22d of the support member 20d in any one state in the state connected to, and the state fixed. Furthermore, in the injection molding apparatus according to the fourth embodiment, the support member 20d and the sub injection unit 30 are described as being attached to the vertical injection molding apparatus main body 2 ', but the present invention is not limited to this. The member 20d and the sub-injection unit 30 are arranged on the upper and side surfaces of the above-described pressing device having a vertical mold clamping mechanism similar to that of the injection molding device main body 2 ′ and the fixed mold 6 of the horizontal injection molding device type injection molding device main body 2. Or it is good also as a structure attached to the bottom face or the upper surface of the movable metal mold | die 7, a side surface, or a bottom face.

[Fifth Embodiment]
Next, an injection molding apparatus according to the fifth embodiment will be described with reference to FIG. The injection molding apparatus according to the fifth embodiment includes a vertical injection molding apparatus type injection molding apparatus main body 2 ′, a support member 20e fixed to the injection molding apparatus main body 2 ′, and a sub-injection supported by the support member 20e. Unit 30.

  As shown in FIG. 7, the support member 20e according to the fifth embodiment has a substantially L-shaped cross section having a fixed surface 21e fixed to the fixed platen 4 'and a support surface 22e extending in a direction intersecting the fixed surface 21e. It is formed in a shape. The support member 20e has a fixed surface 21e fixed to one side surface of the fixed platen 4 ′ by fastening means such as a bolt so that the support surface 22e intersects the side surface of the fixed platen 4 ′.

  The sub injection unit 30 is disposed on the support surface 22e of the support member 20e via the sub injection unit moving mechanism 23e so as to intersect the horizontal direction of the fixed mold 6 ′ and the movable mold 7 ′. ing.

  The sub-injection unit moving mechanism 23e is a pair of linear motions, similar to the sub-injection unit moving mechanism 23d according to the fourth embodiment, except that the sub-injection unit 30 is configured to advance and retract with respect to the fixed mold 6 '. A guide rail 24e, a linear motion guide block 25e, and drive means (not shown) are provided, and the sub injection unit 30 can be moved back and forth. The pair of linear motion guide rails 24e may be configured to be directly laid on the support surface 22e, or may be configured to be fixed to a guide base (not shown) laid on the support surface 22e. Also good. Further, the driving means can be provided at an arbitrary position of the support member 20e. Each component constituting the sub-injection unit moving mechanism 23e can employ various known configurations, and thus detailed description thereof is omitted.

  The injection molding apparatus according to the fifth embodiment having the above-described configuration is configured by attaching the sub injection unit 30 to the side surface of the fixed plate 4 ′ (die mounting plate) of the injection molding apparatus main body 2 ′ using the support member 20e. Can be manufactured.

  In the injection molding apparatus according to the fifth embodiment, the support member 20e has been described as being fixed to the side surface of the fixed platen 4 ′, but is not limited thereto, and is fixed to the side surface of the movable platen 5 ′. It is good also as a structure which supports the sub injection unit 30 in the side surface side of movable metal mold | die 7 '. Further, the sub injection unit 30 has been described as being configured to be advanced and retracted by the sub injection unit moving mechanism 23e. However, the sub injection unit 30 is not limited to this, and the injection nozzle is a resin supply port (not shown) of the fixed mold 6 '. It is good also as a structure fixed to the support surface 22e of the support member 20e in any one state of the state connected to, and the fixed state. Furthermore, in the injection molding apparatus according to the fifth embodiment, the support member 20e and the sub injection unit 30 have been described as being attached to the vertical injection molding apparatus type injection molding apparatus main body 2 '. The member 20e and the sub-injection unit 30 are arranged on the upper surface, the side surface or the side surface of the fixing plate 4 of the above-described pressing device having the same mold clamping mechanism as the injection molding device main body 2 ′ or the horizontal injection molding device type. It is good also as a structure attached to the bottom face or the upper surface of the movable board 5, a side surface, or a bottom face.

[Sixth Embodiment]
Next, an injection molding apparatus according to the sixth embodiment will be described with reference to FIG. The injection molding apparatus according to the sixth embodiment includes a horizontal injection molding apparatus type injection molding apparatus main body 2, a support member 20f fixed to the injection molding apparatus main body 2, and a sub injection unit 30 supported by the support member 20f. It has.

  As shown in FIG. 8, the support member 20 f according to the sixth embodiment is formed in a plate shape, and one surface functions as a fixed surface 21 f that is fixed to the mold mounting surface of the fixed platen 4, and the other This surface is configured to function as a support surface (die mounting surface) 22 f that supports the fixed mold 6 and the sub injection unit 30. That is, the support member 20 f has both a function as a mold attachment plate that is a member on the fixed mold 6 side and a function as a support member that supports the sub injection unit 30. The support member 20f is formed in a rectangular shape, and the fixing surface 21f is fixed to the mold mounting surface of the fixed platen 4 by fastening means such as a bolt in a state where one end portion extends outward from the side surface of the fixed platen 4. Has been.

  The fixed mold 6 is attached to the support surface 22f of the support member 20f, and at a position close to the fixed mold 6, it intersects with the mold opening and closing directions of the fixed mold 6 and the movable mold 7 and is directed in the horizontal direction. The sub injection unit 30 is disposed via the sub injection unit moving mechanism 23f.

  Similarly to the sub injection unit moving mechanism 23b according to the second embodiment, the sub injection unit moving mechanism 23f includes a pair of linear motion guide rails 24f, a linear motion guide block 25f, and driving means (not shown). The sub injection unit 30 can be moved forward and backward with respect to the fixed mold 6. The pair of linear motion guide rails 24f may be configured to be directly laid on the support surface 22f, or may be configured to be fixed to a guide base (not shown) laid on the support surface 22f. Also good. Further, the driving means can be provided at an arbitrary position of the support member 20f. Each component constituting the sub-injection unit moving mechanism 23f can employ various known configurations, and thus detailed description thereof is omitted.

  The injection molding apparatus according to the sixth embodiment having the above-described configuration is similar to the injection molding apparatus according to the first embodiment, using the support member 20f, the stationary platen 4 (die mounting plate) of the injection molding apparatus main body 2. It can be manufactured by attaching the sub injection unit 30 to the mold mounting surface.

  In the injection molding apparatus according to the sixth embodiment, the support member 20f has been described as supporting the sub injection unit 30 on the side surface side of the fixed mold 6. However, the present invention is not limited to this. The sub injection unit 30 may be supported on the upper surface side or the bottom surface side. Further, the support member 20f has been described as being fixed to the mold mounting surface of the fixed platen 4, but is not limited thereto, and is fixed to the mold mounting surface of the movable platen 5, and the upper surface side of the movable mold 7 The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the sub injection unit 30 has been described as being configured to be able to advance and retreat by the sub injection unit moving mechanism 23f. However, the present invention is not limited to this, and the injection nozzle is connected to a resin supply port (not shown) of the fixed mold 6. It may be configured to be fixed to the support surface 22f of the support member 20f in either one of the connected state and the fixed state. Furthermore, in the injection molding apparatus according to the sixth embodiment, the support member 20f and the sub injection unit 30 are described as being attached to the horizontal injection molding apparatus type injection molding apparatus main body 2. However, the present invention is not limited to this, and the support member 20f and the sub-injection unit 30 may be attached to the vertical injection molding apparatus type injection molding apparatus main body 2 'or the above-described press apparatus having the same vertical mold clamping mechanism as the injection molding apparatus main body 2'.

[Seventh Embodiment]
Next, an injection molding apparatus according to the seventh embodiment will be described with reference to FIG. The injection molding apparatus according to the seventh embodiment includes a horizontal injection molding apparatus type injection molding apparatus main body 2, a support member 20g fixed to the injection molding apparatus main body 2, and a sub injection unit 30 supported by the support member 20g. It has.

  As shown in FIG. 9, the support member 20 g according to the seventh embodiment includes a mold attachment plate 27 formed in a plate shape and a pair of support plates 28 extending in a direction intersecting with the mold attachment plate 27. As a whole, the cross section is formed in a substantially U shape.

  The mold mounting plate 27 is configured such that one surface functions as a fixed surface 21g fixed to the mold mounting surface of the stationary platen 4 and the other surface functions as a mold mounting surface to which the fixed mold 6 is mounted. Has been. The mold mounting plate 27 is formed in a rectangular shape, and in a state where one end portion extends outward from the side surface of the stationary platen 4, the stationary surface 21 g is fixed to the mold mounting surface of the stationary platen 4 by fastening means such as a bolt. It is fixed to.

  The pair of support plates 28 is erected on the mold mounting surface of the mold mounting plate 27, and the surfaces facing each other are configured to function as support surfaces 22 g that support the sub injection unit 30. Between the pair of support surfaces 22g, the sub injection unit 30 is disposed via the sub injection unit moving mechanism 23g so as to intersect the horizontal direction of the stationary mold 6 and the movable mold 7 in the mold opening / closing direction. .

  Similarly to the sub injection unit moving mechanism 23c according to the third embodiment, the sub injection unit moving mechanism 23g includes a pair of linear motion guide rails 24g, a linear motion guide block 25g, and driving means (not shown). The sub injection unit 30 can be moved forward and backward with respect to the fixed mold 6. The pair of linear guide rails 24g may be configured to be directly laid on the support surface 22g, or may be configured to be fixed to a guide base (not shown) laid on the support surface 22g. Also good. Further, the driving means can be provided at an arbitrary position of the support member 20g. Each component constituting the sub-injection unit moving mechanism 23g can employ various known configurations, and thus detailed description thereof is omitted.

  The injection molding apparatus according to the seventh embodiment having the above-described configuration is similar to the injection molding apparatus according to the first embodiment, using the support member 20g, and the stationary platen 4 (die mounting plate) of the injection molding apparatus main body 2. It can be manufactured by attaching the sub injection unit 30 to the mold mounting surface. According to the support member 20g according to the seventh embodiment, similarly to the support member 20c according to the third embodiment, the sub-injection unit 30 is interposed between a pair of support surfaces 22g erected perpendicular to the fixed surface 21g. It is possible to support the sub injection unit 30 at a position close to the fixed platen 4.

  In the injection molding apparatus according to the seventh embodiment, the support member 20g has been described as supporting the sub injection unit 30 on the side surface side of the fixed mold 6. However, the present invention is not limited to this, and the support member 20g The sub injection unit 30 may be supported on the upper surface side or the bottom surface side. Further, the support member 20g has been described as being fixed to the mold mounting surface of the fixed platen 4, but is not limited thereto, and is fixed to the mold mounting surface of the movable platen 5 so that the upper surface side of the movable mold 7 is reached. The sub injection unit 30 may be supported on the side surface or the bottom surface. Further, the sub injection unit 30 has been described as being configured to be advanced and retracted by the sub injection unit moving mechanism 23g. However, the sub injection unit 30 is not limited to this, and the injection nozzle is connected to a resin supply port (not shown) of the fixed mold 6. It is good also as a structure fixed to a pair of support surface 22g of the supporting member 20g in any one state of the connected state and the fixed state. Furthermore, in the injection molding apparatus according to the seventh embodiment, the support member 20g and the sub injection unit 30 have been described as being attached to the horizontal injection molding apparatus main body 2. However, the present invention is not limited to this, and the support member 20 g and the sub-injection unit 30 may be attached to a vertical injection molding apparatus type injection molding apparatus main body 2 'or the above-described press apparatus having a vertical mold clamping mechanism similar to the injection molding apparatus main body 2'.

[Eighth Embodiment]
Next, an injection molding apparatus according to the eighth embodiment will be described with reference to FIG. The injection molding apparatus according to the eighth embodiment includes a horizontal injection molding apparatus type injection molding apparatus main body 2, a support member 20h fixed to the injection molding apparatus main body 2, and a sub injection unit 30 supported by the support member 20h. It has.

  As shown in FIG. 10, the support member 20h according to the eighth embodiment includes a cylindrical fixing portion 21h attached to a pair of tie bars 9 located above via bushes (not shown), and a pair of And a support plate 29 spanned between the fixed portions 21h. The support plate 29 is provided substantially parallel to the mold mounting surface of the fixed platen 4, and one surface functions as a support surface 22 h that supports the sub injection unit 30.

  In the injection molding apparatus according to the eighth embodiment, the sub-injection unit 30 is in a state in which the sub-injection unit 30 is directed downward in the vertical direction, and a resin supply in which an injection nozzle (a tip portion of the heating barrel 35c) is formed on the upper surface of the fixed mold 6. The housing 31 is fixed to the support surface 22h of the support member 20h in either one of the state connected to the port 6a and the fixed state. Instead of or in addition to the configuration in which the injection nozzle of the sub-injection unit 30 is fixed to the support member 20h in one of the state in which the injection nozzle is connected to the upper surface of the fixed mold 6 and the state in which it is fixed. It is also possible to employ a configuration in which the sub injection unit 30 is fixed by a fixing means provided on the fixed platen 4. Here, in the case where the fixed frame 32 of the sub injection unit 30 is fixed to the plate-shaped member instead of the housing 31, the plate-shaped member may be fixed to the support member 20h.

  The injection molding apparatus according to the eighth embodiment having the above-described configuration is used with respect to the upper surface of the stationary mold 6 of the injection molding apparatus main body 2 by using the support member 20h provided across a pair of adjacent tie bars 9. It can be manufactured by attaching the sub injection unit 30. According to the injection molding apparatus according to the eighth embodiment, the sub-injection unit 30 is firmly fixed to the fixed mold 6 at two locations, the upper surface of the fixed mold 6 and the support surface 22h of the support member 20h. It becomes possible.

  In the injection molding apparatus according to the eighth embodiment, the support member 20 h is provided over the pair of tie bars 9 positioned above and supports the sub injection unit 30 on the upper surface side of the fixed mold 6. However, the present invention is not limited to this. For example, the support member 20 h may be provided across a pair of tie bars 9 adjacent in the vertical direction, and the sub injection unit 30 may be supported on the side surface side of the fixed mold 6. The pair of support members 20 h may be positioned below. It is good also as a structure which covers the tie bar 9 and supports the sub injection unit 30 on the bottom surface side of the fixed mold 6. The support member 20h has been described as fixing the sub injection unit 30 to the fixed mold 6. However, the support member 20h is not limited to this, and the sub injection unit 30 is fixed to the upper surface, side surface, or bottom surface of the movable mold 7. It is good also as a structure fixed. Further, the sub injection unit 30 has been described as being fixed at two places, that is, the upper surface of the fixed mold 6 and the support surface 22h of the support member 20h. However, the present invention is not limited to this, and the support surface 22h of the support member 20h. The area may be larger than the illustrated example, and a sub-injection unit moving mechanism (not shown) may be provided on the support surface 22h so that the fixed mold 6 can be advanced and retracted. Furthermore, in the injection molding apparatus according to the eighth embodiment, the support member 20h and the sub injection unit 30 are described as being attached to the horizontal injection molding apparatus type injection molding apparatus main body 2. However, the present invention is not limited to this, and the support member 20h and the sub-injection unit 30 may be attached to a vertical injection molding apparatus type injection molding apparatus main body 2 'or the above-described press apparatus having a vertical mold clamping mechanism similar to the injection molding apparatus main body 2'.

[Ninth Embodiment]
Next, an injection molding apparatus according to the ninth embodiment will be described with reference to FIG. The injection molding apparatus according to the ninth embodiment adds an auxiliary support member 40 for fixing the sub injection unit 30 to the tie bar 9 and moves the sub injection unit to the injection molding apparatuses according to the first to seventh embodiments. The sub-injection unit 30 is fixed to the support surfaces 22a to 22g of the support members 20a to 20g without the mechanisms 23a to 23g. In addition, in FIG. 11, although the structure at the time of making the base the injection molding apparatus which concerns on 1st Embodiment is illustrated, it is not limited to the structure of the said illustration, For example, it shows in FIGS. A configuration in which the injection molding apparatus according to the second to seventh embodiments is used as a base is also possible.

  As shown in FIG. 11, the auxiliary support member 40 has one end portion 41 attached to one tie bar 9 and the other end portion 42 attached to the sub injection unit 30 by fastening means such as bolts. The one end portion 41 is formed in a cylindrical shape and is attached to the tie bar 9 via a bush (not shown).

  In the injection molding apparatus according to the ninth embodiment, the sub-injection unit 30 is in a state in which the sub-injection unit 30 is directed downward in the vertical direction, and a resin supply in which an injection nozzle (a tip portion of the heating barrel 35c) is formed on the upper surface of the fixed mold 6. The housing 31 is fixed to the support surface 22a of the support member 20a in any one of the state connected to the port 6a and the fixed state. In addition to or in addition to the configuration in which the injection nozzle of the sub injection unit 30 is fixed to the support member 20a in either one of the state in which the injection nozzle is connected to the upper surface of the fixed mold 6 and the state in which it is fixed. It is also possible to employ a configuration in which the sub injection unit 30 is fixed by a fixing means provided on the fixed platen 4. Here, in the case where the fixed frame 32 of the sub injection unit 30 is fixed to the plate-shaped member instead of the housing 31, the plate-shaped member may be fixed to the support member 20a.

  The injection molding apparatus according to the ninth embodiment having the above-described configuration uses the support members 20a to 20g to mold mounting plates (fixed plates 4, 4 ', movable plates 5, 5' of the injection molding device main bodies 2, 2 '. ') Or fixing the sub injection unit 30 to the mold (fixed mold 6, 6', movable mold 7, 7 ') and fixing the sub injection unit 30 to the tie bar 9 using the auxiliary support member 40. Can be manufactured by. According to the injection molding apparatus according to the ninth embodiment, at least two places of the support surfaces 22a to 22h of the support members 20a to 20g and the auxiliary support member 40 connected to the tie bar 9, the mold mounting plate (fixed platen). 4, 4 ′, movable platen 5, 5 ′) or mold (fixed molds 6, 6 ′, movable molds 7, 7 ′), the sub injection unit 30 can be firmly fixed.

  In the injection molding apparatus according to the ninth embodiment, the auxiliary support member 40 has been described as having one end 41 attached to one tie bar 9, but the present invention is not limited to this, and the injection according to the eighth embodiment. It is good also as a structure provided over two or more adjacent tie bars 9 like the supporting member 20h of a shaping | molding apparatus.

  As described above, in each of the injection molding apparatuses according to the first to ninth embodiments, the support members 20a to 20h configured to support the sub injection unit 30 in the direction intersecting the mold opening / closing direction of the mold. The sub-injection unit 30 with respect to the mold mounting plate (fixed platen 4, 4 ', movable platen 5, 5') or mold (fixed die 6, 6 ', movable die 7, 7') A method of supporting the sub-injection unit 30 is used. Further, it goes without saying that the injection molding apparatus according to the first to eighth embodiments can employ the support method of the sub injection unit 30 that uses the auxiliary support member together as in the ninth embodiment, if necessary.

  And according to the injection molding apparatus which concerns on the 1st-9th embodiment which employ | adopted such a support method, the auxiliary support member 40 is used together by using the support members 20a-20h or as needed. Thus, the sub injection unit 30 is attached to the mold mounting plate (fixed platen 4, 4 ′, movable platen 5, 5 ′) or the mold (fixed die 6, 6 ′, movable die 7, 7 ′). Since it can be firmly attached, it is not necessary to interpose an elastic member such as a spring between the sub-injection unit and the mold as in the injection molding apparatus of Patent Document 1. Thereby, the injection molding apparatus according to the first to ninth embodiments has the following advantages as compared with the injection molding apparatus of Patent Document 1.

  First, the injection molding apparatus according to the first to ninth embodiments includes a mold mounting plate (fixed plates 4, 4 ′, movable plates 5, 5 ′) or a mold (fixed molds 6, 6 ′, movable). By firmly attaching the sub-injection unit 30 to the mold 7, 7 ′), compared to the injection molding apparatus of Patent Document 1, it is caused by vibration due to mold opening / closing operation, mold clamping operation, injection filling operation, etc. This has the advantage that the components are not easily damaged and worn.

  Secondly, in the injection molding apparatus of Patent Document 1, since the sub injection unit 30 is directly fixed to the mold, the fixing portion is enlarged in order to ensure the rigidity of the fixing portion of the sub injection unit 30. At the same time, there is a problem that the overall weight increases. However, in the injection molding apparatus according to the first to ninth embodiments, the load of the sub injection unit 30 can be sufficiently received by the support members 20a to 20h. Thus, it is not necessary to provide a fixing portion on the side of the sub injection unit 30 or it is possible to keep the fixing portion to the minimum necessary, so that the configuration of the sub injection unit 30 can be simplified and reduced in size.

  3rdly, in the injection molding apparatus which concerns on 1st-9th embodiment, according to the position of the resin supply port of metal mold | die (fixed metal mold | die 6,6 ', movable mold | die 7,7'), it is supporting member 20a-. By simply changing the shape and installation position of 20h, the mold mounting plate (fixed platen 4, 4 ', movable platen 5, 5') or mold (fixed die 6, 6 ', movable die 7, 7' ), The sub injection unit 30 can be arbitrarily installed at various locations. Therefore, compared with the injection molding apparatus of Patent Document 1 that directly fixes the sub injection unit 30 to the mold, It has the advantage that there are few restrictions on the installation position and installation form for the mold.

  Fourthly, in the injection molding apparatus according to the first to ninth embodiments, as described above, the injection mounting of the auxiliary material can be performed by reducing the restrictions on the installation position and the installation form with respect to the mold mounting plate or the mold. Since the sub injection unit 30 can be arranged closer to the cavity that requires the resin, the length of the resin flow path (hot runner) to the cavity for the secondary material can be shortened. And since the resin flow path length for submaterials can be shortened in this way, in the injection molding apparatus according to the first to ninth embodiments, the mold (fixed molds 6, 6 ′, movable mold) 7 and 7 '), the structure can be simplified, and the deterioration of the quality of the secondary material can be suppressed.

  The preferred embodiment of the present invention has been described above, but the technical scope of the present invention is not limited to the scope described in the above-described embodiment. Various modifications or improvements can be added to the above embodiments.

  For example, in the above-described embodiment, the mold has been described as a two-sheet mold including the fixed molds 6 and 6 ′ and the movable molds 7 and 7 ′. , 6 'and movable molds 7, 7' may be three or more molds obtained by adding one or more intermediate molds. In this case, the support members 20a to 20h may be configured to be attached to an intermediate mold or an intermediate plate that supports the intermediate mold.

  In the above-described embodiment, the configuration in which one sub injection unit 30 is installed has been described as an example. However, the configuration is not limited thereto, and a configuration in which a plurality of sub injection units 30 are installed may be employed. .

  Furthermore, in the above-described embodiment, the configuration in which the injection nozzle of the sub-injection unit 30 is connected to the resin supply port formed in the mold has been described as an example. For the purpose of branching, etc., the resin supply ports are formed on the upper, side and lower surfaces of the blocks arranged between the molds, and the resin supply ports are formed on the upper and side surfaces of the mold mounting plate for the same purpose. In addition, the present invention can be suitably implemented even with a special configuration in which a resin flow path (hot runner) or the like that opens on the mold mounting surface of the same board is provided.

  In the above-described embodiment, the sub injection unit 30 is an independent device in which the fixed frame 32, the movable frame 33, the movable frame drive mechanism 34, the cylinder assembly 35, and the plasticizing screw drive mechanism 36 are accommodated in the housing 31. Although it was described that the sub injection unit moving mechanisms 23a to 23g are provided separately from the sub injection unit 30, the present invention is not limited to this. For example, the fixed frame 32 and the movable frame 33 are slidably attached to the linear motion guide rail provided directly on the support surface of the support member or indirectly via the base plate via the linear motion guide block. The sub-injection unit and the sub-injection unit moving mechanism are integrated into one unit as in the configuration in which the movable frame drive mechanism, the plasticizing screw drive mechanism, and the above-described drive means are arranged on the support surface or the base plate. It is also possible to form the structure. In this case, the housing (cover member) may be provided on the support surface of the support member or on the base plate so as to cover the entire unit in a state in which the tip end portion of the cylinder assembly protrudes.

  3 Main injection unit, 4, 4 'fixed plate (die mounting plate), 5, 5' movable plate (die mounting plate), 6, 6 'fixed die (die), 7, 7' movable die (Mold), 9, 9 'tie bar, 20a-20h support member, 21a-21g fixed surface, 22a-22h support surface, 23a-23g sub injection unit moving mechanism, 30 sub injection unit, 40 auxiliary support member

Claims (9)

At least two mold mounting plates facing each other, a mold directly or indirectly mounted on each of the mold mounting plates, and a molten resin with respect to a cavity formed by clamping the molds to each other An injection molding apparatus comprising: a main injection unit arranged to be able to inject; and a sub injection unit formed smaller than the main injection unit and arranged to be able to inject molten resin into the cavity,
A support member for attaching the sub injection unit to one of the mold mounting boards or one of the molds;
The support member is configured to support the sub-injection unit in a direction intersecting a mold opening / closing direction of the mold ,
The support member includes a fixed plate portion having a fixed surface fixed to one of the mold mounting plates or one of the molds, and a pair of support plates each having a support surface extending in a direction crossing the fixed surface. An injection molding device , wherein the sub-injection unit is supported between the pair of support surfaces . At least two mold mounting plates facing each other, a mold directly or indirectly mounted on each of the mold mounting plates, and a molten resin with respect to a cavity formed by clamping the molds to each other An injection molding apparatus comprising: a main injection unit arranged to be able to inject; and a sub injection unit formed smaller than the main injection unit and arranged to be able to inject molten resin into the cavity,
A support member for attaching the sub injection unit to one of the mold mounting boards or one of the molds;
The support member is configured to support the sub-injection unit in a direction intersecting a mold opening / closing direction of the mold,
The support member includes a mold mounting plate having a fixed surface fixed to one of the mold mounting plates and a mold mounting surface to which one of the molds is mounted, on the mold mounting surface, the sub-injection unit to that I De forming apparatus characterized in that it is configured to support a. A plurality of tie bars penetrating the mold mounting plate;
Wherein the support member is provided across a pair of adjacent said tie bars, an injection molding apparatus according to claim 1 or 2, characterized in that it has a supporting surface for supporting the sub-injection unit. The sub-injection unit is moved back and forth with respect to the mold between a position where the injection nozzle of the sub-injection unit is connected to one of the molds and a position where the injection nozzle is separated from the mold. injection molding apparatus according to any one of claims 1 to 3, further comprising a sub-injection unit moving mechanism. The sub-injection unit is fixed to the support member in a state where the injection nozzle is connected to one of the mold mounting plates or one of the molds, or fixed. The injection molding apparatus according to any one of claims 1 to 3 . A plurality of tie bars penetrating the mold mounting plate;
An auxiliary support member having one end attached to at least one of the plurality of tie bars and the other end attached to the sub injection unit;
The sub-injection unit is fixed to the support member in a state where the injection nozzle is connected to one of the mold mounting plates or one of the molds, or fixed. The injection molding apparatus according to claim 1 or 2 . It is a manufacturing method of the injection molding device according to any one of claims 1 to 6 ,
In a direction intersecting the mold opening and closing direction of the mold, with the support member configured to support the sub-injection unit, wherein to one of one or the die of the mold mounting platens A method of manufacturing an injection molding apparatus, comprising attaching a sub-injection unit. At least two mold mounting plates facing each other, a mold directly or indirectly mounted on each of the mold mounting plates, and a molten resin with respect to a cavity formed by clamping the molds to each other A sub-injection unit that is formed smaller than the main injection unit and configured to inject molten resin into the cavity is attached to an injection molding apparatus that includes a main injection unit that is disposed so as to be capable of injection A support method for
A cross-section substantially having a fixed plate portion having a fixed surface fixed to one of the mold mounting plates or one of the molds, and a pair of support plates each having a support surface extending in a direction intersecting the fixed surface. Using a support member configured to support the sub-injection unit in a direction intersecting a mold opening / closing direction of the mold between the pair of support surfaces , A method for supporting a sub-injection unit, comprising attaching the sub-injection unit to one of the mold mounting boards or one of the molds. At least two mold mounting plates facing each other, a mold directly or indirectly mounted on each of the mold mounting plates, and a molten resin with respect to a cavity formed by clamping the molds to each other A sub-injection unit that is formed smaller than the main injection unit and configured to inject molten resin into the cavity is attached to an injection molding apparatus that includes a main injection unit that is disposed so as to be capable of injection A support method for
A mold mounting plate having a fixed surface to be fixed to one of the mold mounting plates and a mold mounting surface to which one of the molds is mounted, and on the mold mounting surface, the mold of the mold The sub-injection unit is attached to one of the mold mounting boards or one of the molds using a support member configured to support the sub-injection unit in a direction crossing the opening / closing direction. A method for supporting a sub-injection unit.

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