KR101835704B1 - Injection molding machine for composite moldings - Google Patents

Abstract

[PROBLEMS] To provide a variety of molding in an injection molding machine for molding a composite molding product having at least three injection devices.
The present invention relates to a method of manufacturing a metal mold having a first mold half and a second mold half with a first mold half and a second mold half, Wherein the intermediate molds 30 and 30 are provided so as to be capable of fitting with the first and second molds 20 and 22 and are provided with at least three injection devices 14, (14, 15) for injecting molten material into a cavity (C2) formed between the first mold (20) and the intermediate mold (30) An injection apparatus (17) capable of injecting molten material into a cavity (C1) formed between a second mold (22) and an intermediate mold (30) is provided and at least one of the injection apparatuses The injection device 14 is arranged so as to be movable in the direction B other than the screw axis.

Description

INJECTION MOLDING MACHINE FOR COMPOSITE MOLDINGS [0002]

The present invention relates to an injection molding machine for molding an integrated molded article.

An intermediate mold rotated about an axis orthogonal to the mold opening / closing direction is provided between the first mold to which the first mold is attached and the second mold to which the second mold is attached, As an injection molding machine for molding an installed complex molded article, those disclosed in Patent Documents 1 to 3 are known. Patent Document 1 discloses an injection apparatus provided on the outer side of the fixed unit, which is one of the first half or the second half, and the outer side of the other movable unit. Then, the primary molded product formed between the first mold and the intermediate mold is closed with the second mold by rotating the intermediate mold, and secondary molding is performed between the second mold and the intermediate mold to mold the composite molded article (or first The primary molded product may be molded between the second mold and the intermediate mold.)

However, the injection molding machine for molding the complex molded article corresponds to the molding of the composite molded article of the two kinds of resin materials, and is not capable of coping with a variety of various purposes. On the other hand, there is known an injection molding machine for molding an integrated molded article which is capable of molding an integral molded article of three kinds of resin materials, as disclosed in Patent Document 2. In the example of Fig. 1 of Patent Document 2, one injection device is provided on the outer side of the fixed plate, one on the outer side of the movable half, and one injection device on the movable mold and one above the intermediate mold. In the example of Fig. 3, one injection device is provided on the outer side of the fixed plate, one on the outer side of the movable half, and one injection device on the movable mold and one above the intermediate mold. Further, in the example of Fig. 4, two injection devices are provided on the outer side of the fixed plate and one on the outer side of the movable plate.

In Patent Document 3, two-color molding is performed in the same manner as in Patent Document 1. However, as described in the fifth molding example and the sixth molding example, the first cavity and the second cavity, both of which are formed without rotating the rotor, It is described that a monochromatic molded article can be molded with the base.

Japanese Patent Application Laid-Open No. 2011-178095 (Claim 1, 0030, Fig. 1) Japanese Unexamined Patent Publication No. 2013-132812 (Claim 1, Figs. 1, 3, 4) Japanese Patent Laying-Open No. 2011-56774 (Claim 1, 0055, 0057, Fig. 7, Fig. 8)

(Summary of the Invention)

(Problems to be Solved by the Invention)

However, in Patent Document 2, it is assumed that molding of the composite molded article is performed using all of the injection apparatuses in any of the examples, and the structure is not supposed in consideration of various molding methods. In Patent Document 3, it is assumed that molding of a single-color molded article is performed. However, there is no description about the diversity of an injection molding machine for molding an integrated molded article provided with at least three injection apparatuses.

In the present invention, in consideration of the above problems, an intermediate mold rotated about an axis orthogonal to the mold opening / closing direction is disposed between the first half of the first mold on which the first mold is attached and the second half on which the second mold is attached, There is provided an injection molding machine for molding an integrated molded article which is capable of ensuring a variety of molding in an injection molding machine for molding an integrated molded product which is provided so as to be capable of being fitted to the mold and the second mold and has at least three injection devices .

The injection molding machine for molding a complex molded article according to claim 1 of the present invention is rotated about an axis orthogonal to the mold opening and closing direction between a first half on which the first mold is attached and a second half on which the second mold is attached An injection molding machine for forming an intermediate mold with an injection device arranged to be capable of fitting with the first and second molds and having at least three injection devices, And an injection apparatus capable of injecting molten material into a cavity formed between the second mold and the intermediate mold, wherein at least one of the injection apparatuses of the plurality of injection apparatuses Is arranged so as to be movable in directions other than the screw axis.

The injection molding machine for molding a composite molding article according to claim 2 of the present invention is characterized in that the injection molding machine of the first aspect is mounted on the same support table and movable in directions other than the screw axis, Injection molding machine.

The injection molding machine for molding a composite molding article according to claim 3 of the present invention is characterized in that the injection molding machine of the first aspect is mounted on each support and at least one injection molding machine is movable in a direction other than the screw axis .

The injection molding machine for molding a composite molding according to claim 4 of the present invention is characterized in that an injection molding machine for molding a complex molding is rotated about an axis orthogonal to the mold opening and closing direction between a first half on which the first mold is attached and a second half on which the second mold is attached An injection molding machine for an injection molding machine for an injection molding machine, the injection molding machine comprising: a mold cavity formed between the first mold and the intermediate mold; And an injection apparatus capable of injecting a molten material into a cavity formed between the second mold and the intermediate mold, wherein the plurality of injection apparatuses of the plurality of injection apparatuses, Molding a composite molded product using an injection apparatus capable of injecting a molten material into a cavity formed between intermediate molds, And a second mold and the intermediate mold characterized in that the possible selection of molded composite molded article using a cavity injection molding apparatus capable of injecting a molten material to be formed between the.

The injection molding machine for molding a composite molding according to claim 5 of the present invention is characterized in that an injection molding machine for molding an injection molding machine is rotated about an axis orthogonal to the mold opening and closing direction between a first half of the mold to which the first mold is attached and a second half of the mold to which the second mold is attached An injection molding machine for forming an intermediate mold with an injection device arranged to be capable of fitting with the first and second molds and having at least three injection devices, And an injection apparatus capable of injecting a molten material into a cavity formed between the second mold and the intermediate mold, wherein a plurality of injection apparatuses of the plurality of injection apparatuses are used, It is possible to select the molding of the composite molded product in which the molten material is injected into the cavity formed between the first mold and the intermediate mold without rotating the intermediate mold It shall be.

An intermediate mold rotated about an axis orthogonal to the mold opening and closing direction is provided between the first mold and the second mold to which the first mold is attached and the second mold to which the second mold is attached, An injection molding machine for molding an injection molding machine, comprising: a plurality of injection devices capable of injecting a molten material into a cavity formed between the first mold and the intermediate mold; At least one injection apparatus among the injection apparatuses of the plurality of injection apparatuses is arranged so as to be movable in directions other than the screw axis , And a variety of molding can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a part of an injection molding machine for molding an integrated molded article according to an embodiment of the present invention, showing a mold opening state and an injection device retracted state. Fig.
Fig. 2 is a plan view showing a part of an injection molding machine for molding an injection molding machine according to an embodiment of the present invention, which is a view showing the mold closing and advancing of the injection apparatus. Fig.
3 is a plan view of an injection apparatus for a plurality of units according to an embodiment of the present invention.
Fig. 4 is a side view showing, in section, a part of a plurality of injection apparatuses according to an embodiment of the present invention. Fig.
5 is a diagram showing a second molding method of an injection molding machine for molding an integrated molded article according to an embodiment of the present invention.
Fig. 6 is a diagram showing a third molding method of an injection molding machine for molding an integrated molded article according to an embodiment of the present invention. Fig.
Fig. 7 is a plan view of an injection apparatus for a plurality of apparatuses of an injection molding machine for molding an integrated molded article according to another embodiment and a drawing method thereof. Fig.

(Mode for carrying out the invention)

An injection molding machine 11 for molding an integrated molded article according to an embodiment of the present invention will be described with reference to Figs. 1 and 2. Fig. An injection molding machine 11 for molding an integrated molded product is an injection molding machine having a function of molding an integrated molded product using a molten resin injected from another injection apparatus. The mold 12 is provided with a mold clamping device 13 and a plurality of injection devices 14 and 15, and a second injection apparatus moving unit 18 having one injection apparatus 17 are provided.

The mold clamping apparatus 13 has a fixed mold 20 as a first mold attached to a first fixed mold half 19 fixed to a bed 12 and a second mold half movable movable mold 21 as a second mold movable mold A mold 22 is attached. A mold clamping cylinder 23 as a mold clamping mechanism is provided in the vicinity of the four corners of the fixed plate 19 and the rod is inserted into the vicinity of the four corners of the movable platen 21 as a tie bar 24. The heating cylinders 42 and 59 and the nozzles 41 and 46 of the two injection apparatuses 14 and 15 and the recesses 41 and 46 for inserting the nozzles 41 and 46 are provided on the outer side of the stationary mold 19 (on the opposite side of the mounting surface of the stationary mold 20) A portion 19a (triggered portion) is formed. A notch (not shown) is provided on the outer periphery of the tie bar 24, and a half nut 25 is provided in the vicinity of a portion where the tie bar 24 is inserted into the outer wall surface of the movable base 21. The heating cylinder 60 and the nozzle 55 of one injection apparatus 17 can be inserted into the concave portion 21a (the side opposite to the mounting surface of the movable mold 22) Is formed on the surface of the substrate. The movable half 21 is movable on the bed 12 in the die opening / closing direction A by a die opening / closing mechanism 26 (movable half movement mechanism). The mold opening and closing mechanism 26 is attached to the bed 12 and the movable base 21 and includes a servomotor and a ball screw mechanism which are driving means.

Further, a rotating shaft 27 (the rotating shaft 27 in the most cases may be a vertical shaft but may be a horizontal shaft) is provided between the stationary table 19 and the movable table 21 And a rotating disk 28 rotated about the center. The rotary disk 28 is guided by the bed 12 or the tie bar 24 so as to be rotatable about the rotary shaft 27 through a bearing (Or 180 degrees of freedom). An electric motor 35 for rotating the rotary disk 28 is attached to the intermediate disk 29. An intermediate mold (30) having the same cavity surface is attached to one surface and the other surface of the rotating disk (28). The rotary disk 28 is movable in the die opening / closing direction A by a moving mechanism 31 using a servo motor and a ball screw mechanism with respect to the fixed disk 19 or the movable disk 21. In addition, in addition to being rotatably mounted on the intermediate plate 29 (including the upper and lower divided parts) inserted into the tie bar 24, the tie bar 24 is not inserted And may be rotatably installed on the intermediate plate 29 on the table. Further, the intermediate mold 30 may be directly attached to the intermediate mold 29 so as to be rotatable, and may not be provided with the mold cavity 28. [

The mechanism of the mold clamping device 13 is not limited to the above, and the mold clamping cylinder may be provided on the movable mold 21 side of the second half. Further, a toggle mechanism may be provided on the back surface of the movable base 21, in which case the mold clamping mechanism and the mold opening / closing mechanism are also used. Although only one of the mold opening and closing mechanism 26 of the movable mold 21 and the moving mechanism 31 of the intermediate mold 29 are shown in Figs. 1 and 2, generally two or more molds are provided, The number, the member to be attached, and the driving means are not limited. In the mold clamping apparatus, the intermediate half is fixedly installed on the bed, the intermediate half is rotatably provided with the intermediate mold on which the intermediate mold is attached, and the first half and the second mold on which the first mold is attached are attached The second half may be provided so as to be movable toward the middle half of the center. And a second movable half which is a second half is provided on one side of the first movable half, and between the first movable half and the second movable half, A middle half capable of moving in the opening / closing direction A, and a rotating disk may be provided. Furthermore, a plurality of rotating bodies (or a plurality of sets of intermediate molds) may be provided between the first half and the second half.

Next, the first injection apparatus moving unit 16 disposed on the first half of the fixed base 19 side and having a plurality of injection apparatuses 14, 15 mounted thereon will be described with reference to Figs. 2, 3, 4 do. The injection apparatuses 14 and 15 of the first injection apparatus moving unit 16 are all provided with a cavity C2 formed between the fixed mold 20 and the intermediate mold 30 as the first mold, Device. A plurality of guide rails 32 and 32 are provided on the base 12a on the bed 12 toward a horizontal direction B (direction of operation side-half operation side) perpendicular to the mold opening and closing direction, (34) of the first injection apparatus moving unit (16) is slidably mounted in the direction (B) on the first and second injection units (32, 32). At both ends of the guide rails 32 and 32, stoppers 32a and 32b for stopping the moved support stand 34 are provided, respectively. On the base portion 12a of the bed 12, a hydraulic cylinder 33 as a driving means for moving the support table 34 is provided. The cylinder 33a is attached to the bracket 56 provided between the guide rails 32 and 32 on the base portion 12a of the hydraulic cylinder 33. The cylinder 33a is attached to the bracket 57 on the back surface of the support base 34, (Not shown). The driving means for moving the support table 34 may be a servo motor, a ball screw mechanism, or other means such as an air cylinder.

Two injection apparatuses 14 and 15 are mounted on the support stand 34. [ Although the injection apparatus 14 and the injection apparatus 15 of the present embodiment are injection apparatuses having different capabilities, the structure of the placement structure and the nozzle touch are the same, so the structure of one injection apparatus 14 will be described. A plurality of guide rails 36 and 36 are provided on the half of the upper surface of the support table 34 toward the mold opening and closing direction and a pedestal 37 of the injection apparatus 14 is mounted on the guide rails 36, Is slidable in the opening / closing direction (A). The support table 34 is provided with a hydraulic cylinder 38 of a nozzle touch mechanism for moving the pedestal 37 and the injection apparatus 14. The hydraulic cylinder 38 has a cylinder portion 38a attached to a bracket 39 provided between the guide rails 36 and 36 on the support base 34 and a rod portion 38a is attached to the bracket 40 on the back surface of the base 37. [ 38b are attached. The driving means of the nozzle touch mechanism may be a servo motor, a ball screw mechanism, or other means such as an air cylinder.

The injection apparatus 14 includes a heating cylinder 42 provided with a nozzle 41 on its front side and a screw not shown in the inner cylinder, a driving unit 43 for driving the screw to rotate and forward and backward, And a material supply portion 44 including a housing portion for supplying a resin material into the housing portion 42 and the like. Therefore, the axial direction of the nozzle 41 and the heating cylinder 42 coincide with the direction of the screw shaft. In this embodiment, the injection mechanism and the metering mechanism of the injection apparatus 14 are driven by an electric motor such as a servo motor. However, the injection mechanism and the metering mechanism may be hydraulically operated. The other injection device 15 is smaller than the injection device 14 but has a hydraulic cylinder 45 of the nozzle touch mechanism and the structure capable of moving forward and backward on the guide rails 58 and 58 is the injection device 14 ). The nozzle 46 of the injection apparatus 15 is allowed to advance until it abuts the nozzle touch surface 54 of the stationary mold 20 together with the nozzle 42 of the injection apparatus 14. [ The kind of the injection apparatus 15 and the kind of the nozzle touch mechanism are not limited.

Since the first injection apparatus moving unit 16 has the structure described above, each of the injection apparatuses 14 and 15 is not only movable in the mold opening / closing direction A, but also movable in the horizontal direction B But also in a direction other than the screw axis). The reason why the injection apparatuses 14 and 15 of the present invention take such a structure is that the main purpose of changing the injection apparatuses 14 and 15 abutting the nozzle holes 61 of the stationary metal mold 62, The devices 14 and 15 need only be movable in directions other than the screw axis. Specifically, the injection apparatuses 14 and 15 may be moved along an arc-shaped guide rail, or may be moved obliquely rearward.

In addition, as to the arrangement of the injection apparatuses 14, 15 of the condenser, as shown in Fig. 1, in addition to the example of being arranged on the outer side of the first half (opposite to the attachment surface of the stationary mold), the upper half of the first half, (In this case, the moving direction of the injection apparatus 14 other than the screw shaft coincides with the mold opening / closing direction A, or the mold opening / closing direction Or may not coincide with the horizontal direction B orthogonal to the horizontal direction B). Further, at least two injection apparatuses of the plural apparatuses may be provided and three or more injection apparatuses may be provided.

Next, the second injection apparatus moving unit 18 provided on the movable bench 21 side, which is the second half, with the injection apparatus 17 will be described with reference to Figs. 1 and 2. Fig. The injection apparatus 17 to be mounted on the second injection apparatus moving unit 18 is provided with an injection device 17 capable of injecting molten material into the cavity C1 formed between the movable mold 22 and the intermediate mold 30, to be. A plurality of guide rails 47 and 47 are provided on the bed 12 toward the mold opening and closing direction and a support table 48 is slidably mounted on the guide rails 47 and 47 in the mold opening and closing direction A. The front end of the supporter 48 is integrally fixed to the movable base 21 or connected to the movable base 21. Therefore, the second injection apparatus moving unit 18 is moved together with the movable platen 21 by driving the mold opening / closing mechanism 26. Other guide rails 49 and 49 are provided on the support base 48 and a pedestal 50 for directly mounting the injection device 17 is movably provided on the guide rails 49 and 49. A cylinder portion of a hydraulic cylinder 51, which is a nozzle touch mechanism, is attached to the support table 48, and the rod of the hydraulic cylinder 51 is attached to the pedestal 50. The injection apparatus 17 is slidably installed in the mold opening / closing direction A together with the pedestal 50 by the operation of the hydraulic cylinder 51. [ The type of the mechanism for nozzle touch is not limited.

The structure of the injection apparatus 17 is the same as that of the injection apparatuses 14 and 15. The structure of the injection apparatus 17 is the same as that of the injection apparatuses 14 and 15 except that the screw has a heating cylinder 60 built in an inner hole, a nozzle 55 provided at a front portion of the heating cylinder 60, And a supply unit. The injection apparatus 17 may be provided on the upper portion of the movable mold 21 or may be provided at a position on the side of the movable mold 21, the movable mold 22, or the intermediate mold 30, But may be provided in a direction orthogonal to the horizontal direction B. Further, the second injection apparatus moving unit 18 includes at least one injection apparatus, and may be provided with a plurality of injection apparatuses. Further, in the present invention, it is also possible to provide a plurality of injection apparatuses for the first injection apparatus moving unit by providing the movable half 21 on the movable half 21 in the first half. In that case, the fixing base 19 becomes the second half and the second injection device moving unit 18 has at least one injection apparatus 17. [

The ability of these injection apparatuses 14, 15, 17 is not limited and may be the same or different, but the following cases are also assumed. The injection apparatus 14 and the injection apparatus 17 have the same screw diameter (the diameter of the flight of the screw), and the injection apparatus 15 has a screw diameter smaller than that. When the injection device 14 has the largest screw diameter and the screw diameter decreases in the order of the injection device 17 and the injection device 15. The injection device 14 has the largest screw diameter and the screw diameter decreases in the order of the injection device 15 and the injection device 17. The injection device 17 has the largest screw diameter and the screw diameter decreases in the order of the injection device 14 and the injection device 15. When the injection apparatus 17 has the largest screw diameter and the injection apparatus 14 and the injection apparatus 15 have the same screw diameter and the screw diameter is smaller than that of the injection apparatus 17,

Further, the injection molding machine 11 for molding the complex molded product has a setting screen 52 and a control device 53. [ The control unit 53 then executes the sequential control operation procedure at the time of three-color molding using two of the plurality of injection apparatuses 14 and 15 and the injection apparatus 17 of the plurality of injection apparatuses 14 and 15 And the operating procedure of the sequence control in the case of performing the two-color molding using the injection apparatus 17 can be stored in the storage device 53 as required. The control device 53 also requires the sequence control operation procedure and the like in the case of performing multicolor molding using only the injection devices 14 and 15 of the first half side of the first half without rotating the intermediate dies 30 and 30 I can remember it.

Next, the molding method and operation of the injection molding machine 11 for molding the composite molding according to the present embodiment will be described. A first injection apparatus moving unit 16 provided with injection apparatuses 14 and 15 and a second injection apparatus moving unit 18 provided with one injection apparatus 17 The molding of the composite molded article of all three colors used will be described. 1 and 2, the support 34 of the first injection device moving unit 16 is at an intermediate position and is connected to the nozzle 41 of the injection device 14 and the nozzle of the injection device 15 46 are positioned opposite to the two nozzle holes 54a, 54b of the nozzle touch surface 54 of the stationary mold 20, respectively. The hydraulic cylinder 38 of the nozzle touch mechanism of the injection apparatus 14 and the hydraulic cylinder 45 of the nozzle touch mechanism of the injection apparatus 15 are driven to the forward side and the nozzle 41 is connected to the nozzle hole 54a And the nozzle 46 is connected to the nozzle hole 54b. The molten resin before injection in the injection apparatuses 14 and 15 is often weighed in a state in which the nozzles 41 and 46 are in contact with each other as shown in Fig. The injection apparatuses 14 and 15 may be retracted. On the other hand, the injection apparatus 17 of the second injection apparatus moving unit 18 likewise performs metering while the nozzle 55 is connected to the nozzle hole of the movable mold 22, but the metering may be performed backward .

On the other hand, on the side of the mold clamping device 13, the mold opening / closing mechanism 26 and the moving mechanism 31 are operated so that the distance between the fixed mold 20 and the intermediate mold 30, between the movable mold 22 and the intermediate mold 30 The mold is closed. Then, the half nut 25 is hooked, and the mold clamping cylinder 23 is actuated to perform mold clamping between the respective molds. As shown in Fig. 2, the cavity C1 for primary molding is formed between the movable mold 22 and the intermediate mold 30 by the mold closing and the mold clamping. A cavity C2 for secondary molding is formed between the stationary mold 20 and the intermediate mold 30. [

Next, the movable mold 21 and the intermediate mold 21 are moved from the nozzle 55 of the injection apparatus 17 through the flow path such as the nozzle hole and the hot runner, And the molten resin is injected into the cavity (C1) for primary molding between the mold (30). The molten resin thus injected is cooled and solidified to a degree more than mold openability in the cavity (C1). The mold opening and closing mechanism 26 and the moving mechanism 31 are operated to move the stationary mold 20 and the intermediate mold 30 and the movable mold 31, (22) and the intermediate mold (30) are opened. At this time, the primary molded product P1 is released in the form to be attached to the intermediate mold 30 side. The intermediate mold 30 and the intermediate molds 30 and 30 are rotated 180 degrees around the rotary shaft 27 and the intermediate mold 30 having the primary molded product P1 adhered thereto is rotated . At this time, the intermediate mold 30, in which nothing else is attached to the mold at the same time, is replaced and opposed to the movable mold 22. [

Then, the stationary mold 20, the intermediate mold 30, the movable mold 22 and the intermediate mold 30 are closed and clamped. As a result, two separate spaces C2a and C2b are formed in the cavity C2 between the stationary mold 20 and the intermediate mold 30 by using the primary molded product P1. The spaces C2a and C2b are formed not only between the stationary mold 20, the intermediate mold 30 and the primary molded product P1 but also between the stationary mold 20 and the primary molded product P1 And either case corresponds to the cavity C2 between the first mold and the intermediate mold of the present invention. These spaces C2a and C2b are respectively connected to the nozzle holes 54a and 54b through a flow path of a hot runner or the like of the stationary metal mold 20. Then, injection of a molten resin different from that of the primary molded product P1 is performed from the injection device 14 in which the nozzle 41 is brought into contact with the nozzle hole 54a to the space C2a. The molten resin of the injection apparatus 14 and the molten resin different from the primary molded product P1 are injected from the injection apparatus 15 into the space C2b. The timing of injection of the injection apparatuses 14, 15 and 17 may be either simultaneous or separate (the injection timing of the injection apparatuses 15 and 17 may be different from each other in this specification, Even if it is called secondary molding or tertiary molding.

The molten resin injected into the cavities C2a and C2b is cooled and solidified, respectively. After the cooling and solidification of the molten resin in the cavities C2a and C2b is completed and integrated with the primary molded product, the mold clamping mechanism, the mold opening / closing mechanism, etc. are operated again to release the mold, (30) and the movable mold (22) and the intermediate mold (30). The composite molded product of the three colors pasted on the cavity surface of either the stationary mold 20 or the intermediate mold 30 is pushed out by the ejector provided on the mold and taken out. At the same time, at the same time, molding of the primary molded product P1 is performed in the cavity C1 of the other movable mold 22 and the intermediate mold 30 at the same time.

The primary molding P1 is first molded in the cavity C1 between the movable mold 22 and the intermediate mold 30 using the injection apparatus 17 and the injection apparatus 14, 15 is used to perform secondary molding in the cavity C2 between the stationary mold 20 and the intermediate mold 30 as the first mold. However, in the present invention, primary molding is first performed in the cavity between the stationary mold 20 and the intermediate mold 30 using the injection apparatuses 14 and 15, and the movable mold 22 ) And the intermediate mold 30 to form the composite molded product. (In this case as well, the injection molding of the injection apparatuses 14 and 15 is referred to as primary molding, even if the injection timing is different.) Therefore, in the present invention, at least two injection apparatuses are used in either primary molding or secondary molding. Further, in the present invention, in the primary molding secondary molding, one of the three colors and the other one color, or two colors of the primary molding, and the secondary molding of the two colors, Molding of the molded article is also assumed. Further, in the present invention, not all of the injection apparatuses use different resin materials, and at least two injection apparatuses may use the same resin material.

Next, the second molding method shown in Fig. 5 will be described. In the second molding method, next, an injection molding machine 11 for forming an integrated molded article is used, and one injection apparatus 14 arranged on the first half side and one injection apparatus 14 arranged on the second half side Molding of the two-color composite molded article is carried out using the injection apparatus 17 of Fig. In the second molding method, the sequence of the sequence control is stored in the control device 53, and can be selected by the input from the setting screen 52. [ In the second molding method, as shown in Fig. 5, the stationary mold 62 is replaced with a mold having one nozzle hole 61 corresponding to two-color use. At this time, it is natural that the intermediate dies 30, 30 and the movable die 22 are also exchanged at the same time. Then, the hydraulic cylinder 33 is operated to move the support table 34 in the horizontal direction B perpendicular to the mold opening / closing direction. When the support stand 34 comes into contact with the stopper 32a, the hydraulic cylinder 33 is stopped. Whereby the nozzle 41 of the one injection apparatus 14 is opposed to the nozzle hole 61. (Also when the other injection apparatus 15 is used, the hydraulic cylinder 33 is driven so that the support stand 34 is abutted against the stopper 32b on the opposite side), whereby the nozzle 46 of the injection apparatus 15 is moved to the nozzle hole 61). In addition, a movable stopper (not shown) may be provided to stop the support stand 34 at an intermediate position, and the stopper may come into contact with the stopper.

The hydraulic cylinder 38 of the nozzle touch mechanism is driven to advance the injection device 14 so as to cause the nozzle 41 to touch the nozzle hole 61 of the stationary mold 62 with a nozzle. At this time, the injection apparatus 15 is fixed and supported at the retreated position. The operation of the injection molding machine 11 at the time of molding the two-color composite molded product using the two injection apparatuses 14 and 17 to be performed thereafter is the same as that of the third embodiment using the three injection apparatuses 14, Is substantially the same as the operating procedure of the injection molding machine 11 at the time of molding the composite molded article of color and the injection by the injection apparatus 15 is not performed. That is, after molding the primary molded product P1 on the side of the injection apparatus 17 of the second injection unit, the primary molded product P1 attached to the intermediate mold 30 is rotated and moved toward the stationary mold 20 , The mold is again closed and clamped, and secondary molding is performed using the injection apparatus 14 to mold the two-color composite molding. In addition, in the reverse order, molding of the composite molded product may be performed by primary molding on the side of the stationary mold 20 and secondary molding on the side of the movable mold. In this case, the three-color injection device 14, 15, This is the same as in molding the composite molded article.

In the present embodiment, the injection apparatuses 14 and 15 of the plural are different in capability of the injection apparatus. Therefore, in the case of two-color molding, it is possible to select and use an injection apparatus which is optimal for one-side molding. More specifically, when the injection amount of any one of the primary molding and the secondary molding performed in the cavity between the stationary mold 20 and the intermediate mold 30 as the first mold is large, the screw diameter (or the injection rate Or theoretical injection volume) is used. Further, when the injection amount of molding in the cavity is small, an injection apparatus having a smaller screw diameter (or injection rate or theoretical injection volume) is used. By selecting the injection apparatuses 13 and 14 in accordance with the injection amount as described above, the metering time can be shortened when the injection amount is large. Further, when the injection amount is small, the injection amount with respect to the screw advance distance can be made small by using the injection apparatus 15 having a small screw diameter, and high-precision molding can be performed. In addition, an optimum injection apparatus can be used in view of the resin stay in the heating cylinder. It is also possible to prepare and use a dedicated injection apparatus by using a resin material, or to prepare and use an injection apparatus of a high-speed high-pressure injection specification corresponding to a thin article molding or the like.

As a modification of the first molding method and the second molding method, the injection apparatuses 14 and 15 of the first injection apparatus moving unit 16 may be moved in directions other than the screw axis at the time of molding. That is, in the molding method using the injection apparatuses 14 and 15, when there is only one nozzle hole 54a or when the positions of the nozzle holes 54a and 54b do not face the nozzles 41 and 46 The injection apparatuses 14 and 15 may be moved in correspondence with the operation mode. Further, in the case of using the injection apparatuses 14 and 15 and the molding method which is used only for one of the injection apparatuses 14 and 15, The injection apparatuses 14 and 15 may be moved and ejected.

Next, the third molding method shown in Fig. 6 will be described. In the third molding method, an injection molding machine 11 for molding an integrated molded article is used, and a plurality of injection apparatuses 14, 15 of the plurality of injection apparatuses 14, 15 are used to fix the intermediate mold 30 A molten material is injected into the cavity formed between the mold 20 and the intermediate mold 30 to mold the multicolored composite molded article. In the third forming method, the sequence of the sequence control is stored in the control device 53, and can be selected by the input from the setting screen 52. [

A block 71 having no cavity is attached between the movable half 21 and the rotating disk 28, which is the second half before molding. As a result, the movable half 21 and the rotating disk 28 can be moved by the type opening / closing mechanism 26 as one half. Therefore, the rotation disc 28 becomes non-rotatable. The mold attached to the stationary mold 19 and the rotary drum 28 is a mold capable of forming multicolor molding by moving the core 72 by a driving means such as a hydraulic cylinder 73 or the like. When the stationary mold 74 and the movable mold 75 are closed and clamped, the stationary mold 74 is moved to the stationary mold 74 by using the injection apparatuses 14, And the cavity (C3) formed between the movable mold (75) and the movable mold (75).

At this time, after injecting into the cavity C3 from either one of the injection apparatuses 14 and cooling and solidifying to mold the primary molded product, the hydraulic cylinder 73 of the movable mold 75 is operated, . Then, the cavities newly formed by the retreating of the core 72 are injected from any one of the injection apparatuses 15 to carry out secondary molding, cooling and solidifying them in the form of coupling with the primary molded product to mold the composite molded article. Thereafter, the mold between the stationary mold 74 and the movable mold 75 is opened so that the molded composite product attached to one of the molds is pushed by the ejector.

It is also possible to attach a mold for molding instead of the block 71 between the movable mold 21 and the rotary mold 28 so as to form another mold between the movable mold 21 and the rotary mold 28 do. In this case, when the above-described molding of the composite molded product is performed between the stationary half 18 and the rotary base 28, which are the first half, the movable half 21 and the molding Injection is performed from the injection apparatus 17 to the cavity of the mold, and other molded articles are molded substantially simultaneously. After the fixed plate 18 and the rotating plate 28 are opened and the movable plate 21 and the rotating plate 28 are both opened, the rotating plate 28 is not rotated, And pushes it out. This makes it possible to improve the productivity.

Next, the difference from the injection molding machine 81 for molding an integrated molded article of another embodiment shown in Fig. 7 will be mainly described. The structure of the injection molding machine 81 for molding the composite molding product is similar to that of the embodiment of Fig. 1 and so on, because the structure of the mold clamping device 13 and the second half-side second injection unit is not described here. In the other embodiment shown in Fig. 7, a plurality of injection apparatuses 82, 83 on the side of the fixed base 19 on the first half are provided on the upper surface of the base portion 12a of the bed 12 with different supports 84, 85 And is movable in directions other than the screw axis separately. More specifically, as shown in Fig. 7, guide rails 86 and 86 are provided so as to face the horizontal direction B perpendicular to the mold opening and closing direction. The guide rails 86 and 86 are driven by a hydraulic cylinder 87, The support base 84 is slidable. On the support table 84, a pedestal 88 is provided so as to be movable in the mold opening / closing direction A (screw axis direction) by the hydraulic cylinder 89 of the nozzle touch mechanism. And the injection apparatus 82 on the pedestal 88 is mounted. The injection apparatus 83 is mounted on a support base 85 slidable on the other guide rails 90 and 90 provided in the direction B through a pedestal 91 and connected to a hydraulic cylinder 92 And is moved in the direction B by the hydraulic cylinder 93 of the nozzle touch mechanism.

The injection molding machine 81 for molding the complex molded product is configured so that any one injection device 82 or 83 suitable for molding can be brought into contact with the nozzle hole 95 of the stationary mold 94 Can be moved. In addition, in the case of three-color molding, both of the injection apparatuses 82 and 83 can be moved to the two nozzle holes 95 of the stationary mold 92 to be in contact with each other. In the embodiment of Fig. 7, even when the interval between the two nozzle holes 95 of the stationary mold 94 is different depending on the mold, the interval between the nozzles 96 and 97 can be changed correspondingly.

Although not shown as a modification of Fig. 7, two injection apparatuses are mounted on a common support, but only one of the injection apparatuses is on the support stand, and independently of the other injection apparatus, Or may be placed on another support which moves in the direction of the arrow. Even in this example, the intervals of the nozzles of a plurality of injection apparatuses can be changed. In the example shown in Fig. 7 and in this modified example, one of the centers of the plurality of injection apparatuses is not movable in the direction (B) other than the screw axis, and at least one other injection apparatus is movable in the direction B ). In this case, the central injection apparatus is used in the two-color molding, and is moved only in the mold opening / closing direction for the nozzle touch. In the case of three-color molding, both the central injection apparatus and other injection apparatuses which are moved in directions other than the screw axis, such as a horizontal direction (B) perpendicular to the mold opening / closing direction, toward the position optimal for nozzle touch are used .

The present invention is not limited to the above-described embodiment, but it goes without saying that the present invention is not limited to the above-described embodiment, and that a person skilled in the art may make changes based on the object of the present invention. Injection molding is not limited to materials, and includes molding such as injection compression molding, foam molding, sandwich molding, insert molding and the like.

11, 81 Injection molding machine for forming composite molding
12, 80 bed
13 type fastening device
14, 15, 17, 82, 83 Injection device
18 stationary
20, 62, 74, 92 Fixed mold
21 operation unit
22, 75 movable mold
28 first half
30 intermediate mold
33, 38, 45, 51, 73, 87, 89, 92, 93 Hydraulic cylinders
34, 48, 84, 85 Support
A type opening and closing direction
A horizontal direction orthogonal to the B-type opening and closing direction
C1, C2, C3 cavities

Claims (5)

An intermediate mold rotated about an axis orthogonal to the mold opening / closing direction is provided between the first mold to which the first mold is attached and the second mold to which the second mold is attached, An injection molding machine for molding a composite molding, which is provided with at least three injection devices,
An injection apparatus of a plurality of units arranged on the opposite side of the attachment surface of the first mold of the first half and having a capability of injecting molten material into a cavity formed between the first mold and the intermediate mold,
An injection apparatus which is disposed on the opposite side of the attachment surface of the second mold in the second half and moves together with the second half by driving of the mold opening / closing mechanism and which is formed between the second mold and the intermediate mold, Respectively,
Wherein an injection apparatus of a plurality of units having different capabilities is arranged so as to be movable in directions other than the screw axis. An intermediate mold rotated about an axis orthogonal to the mold opening / closing direction is provided between the first mold to which the first mold is attached and the second mold to which the second mold is attached, An injection molding machine for molding a composite molding, which is provided with at least three injection devices,
An injection apparatus of a plurality of units arranged on the opposite side of the attachment surface of the first mold of the first half and having a capability of injecting molten material into a cavity formed between the first mold and the intermediate mold,
An injection apparatus which is disposed on the opposite side of the attachment surface of the second mold in the second half and moves together with the second half by driving of the mold opening / closing mechanism and which is formed between the second mold and the intermediate mold, Respectively,
An injection apparatus of a plurality of injection apparatuses among a plurality of injection apparatuses of different injection capacities capable of injecting molten material into a cavity formed between the first and second intermediate molds and a molten material Molding the composite molded article using the injection apparatus capable of injecting the resin,
A first injection device among a plurality of injection devices of a plurality of types having different ability to inject molten material into cavities formed between the first mold and the intermediate mold, and a second injection device which is formed between the second mold and the intermediate mold, Characterized in that the molding of the composite molded article using the injection device capable of injecting the material is selectable. An intermediate mold rotated about an axis orthogonal to the mold opening / closing direction is provided between the first mold to which the first mold is attached and the second mold to which the second mold is attached, An injection molding machine for molding a composite molding, which is provided with at least three injection devices,
An injection apparatus of a plurality of units arranged on the opposite side of the attachment surface of the first mold of the first half and having a capability of injecting molten material into a cavity formed between the first mold and the intermediate mold,
An injection apparatus which is disposed on the opposite side of the attachment surface of the second mold in the second half and moves together with the second half by driving of the mold opening / closing mechanism and which is formed between the second mold and the intermediate mold, Respectively,
Molding of a composite molding product in which a molten material is injected into a cavity formed between the first mold and the intermediate mold without rotating the intermediate mold using a plurality of injection apparatuses of a plurality of injection apparatuses having different capabilities, Molding of the composite molded product is carried out by rotating the intermediate mold by using an injection apparatus of one or more of the injection apparatuses of the first and second molds and an injection apparatus capable of injecting molten material into the cavity formed between the second mold and the intermediate mold Wherein the injection molding machine is a molding machine. delete delete

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