Hopper for injection molding machine, injection device, and injection molding machine

Abstract

The hopper (21) of the injection molding machine is provided with a hopper main body (31) and a connecting structure (32) for connecting a heating cylinder (15) and the hopper main body (31). The connection structure (32) has a pedestal (38) including a through hole (44) communicating with the heating cylinder (15), and a connection pipe (39) connecting the pedestal (38) and the hopper body (31). The connecting pipe (39) can be separated from the pedestal (38) by moving relative to the hopper main body (31).

Description

Technical Field

[0001] The present invention relates to a hopper arranged on a heating cylinder of an injection molding machine, an injection device provided with the hopper, and the injection molding machine. Background Art

[0002] The injection device of the injection molding machine includes, for example, a heating cylinder, a screw placed in the heating cylinder, and a screw drive device for driving the screw, as described in Patent Document 1. The heating cylinder is supported in a horizontal position by a predetermined component (for example, a component that is part of the screw drive device). A hopper is installed at the upstream end of the heating cylinder, and an injection material is supplied from the hopper to the heating cylinder. An injection nozzle is installed at the downstream end of the heating cylinder.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2004-506997 Summary of the invention

[0006] When the heating cylinder of the injection device is maintained, the heating cylinder is removed from a prescribed component supporting the heating cylinder while being suspended by a crane or the like. However, since a hopper is installed on the heating cylinder as described above, there is a case where the removal work is hindered by the hopper. Therefore, when removing the heating cylinder, it is best to remove the hopper from the heating cylinder in advance. In order to remove the hopper from the heating cylinder, after the connection between the hopper and the heating cylinder is released, the hopper is suspended by a crane and moved to the outside. Then, after the maintenance is completed, the heating cylinder is mounted on the prescribed component again, and the hopper is mounted on the heating cylinder again. Such removal and installation of the hopper becomes a factor that makes it difficult to improve the workability of the maintenance work of the heating cylinder.

[0007] The present invention provides a hopper of an injection molding machine that allows easy maintenance of a heating cylinder.

[0008] Other problems and new features will become apparent from the description of this specification and the accompanying drawings.

[0009] In the present disclosure, a hopper of an injection molding machine includes: a hopper body, which is provided on a heating cylinder support member that supports a heating cylinder of an injection device and is configured to be horizontally movable; and a connection structure that connects the heating cylinder and the hopper body. The connection structure includes: a pedestal, which is provided on the heating cylinder and has a through hole that communicates with a material supply hole of the heating cylinder; and a connection pipe that connects the pedestal and the hopper body. The connection pipe can move relative to the hopper body (e.g., can slide), and can be separated from the pedestal by moving relative to the hopper body.

[0010] Effects of the Invention

[0011] In the present disclosure, the hopper of the injection molding machine enables easy maintenance of the heating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the metal injection molding machine of the first embodiment.

[0013] Figure 2 It is a perspective view showing a part of the injection device including the hopper according to the first embodiment.

[0014] Figure 3 It is a front cross-sectional view showing a part of the injection device including the hopper according to the first embodiment.

[0015] Figure 4 It is a perspective view showing a part of the hopper according to the first embodiment.

[0016] Figure 5 It is a perspective view showing a part of the injection device including the hopper according to the first embodiment.

[0017] Figure 6 It is a front cross-sectional view showing a part of an injection device including a hopper according to a modified example of the first embodiment.

[0018] Fig. 7A It is a perspective view showing a part of the injection device including the hopper according to the second embodiment.

[0019] Figure 7B It is a perspective view showing a part of the injection device including the hopper according to the second embodiment. DETAILED DESCRIPTION

[0020] Below, the specific implementation mode will be described in detail with reference to the accompanying drawings. However, it is not limited to the following implementation mode. In order to make the description clear, the following description and drawings are appropriately simplified. In each of the drawings, the same elements are marked with the same reference numerals, and repeated descriptions are omitted as needed. In addition, in order to avoid the drawings becoming complicated, there are parts where the hatching is omitted.

[0021] [First embodiment]

[0022] <Metal Injection Molding Machine>

[0023] The injection molding machine 1 of the first embodiment will be described. The injection molding machine 1 is also called a metal injection molding machine 1 because it uses metal as an injection material. Figure 1 As shown in FIG. 1 , the metal injection molding machine 1 includes a mold clamping device 2 provided on a base B, and an injection device 3 provided on the base B so as to be slidable.

[0024] <Mold clamping device>

[0025] The mold clamping device 2 includes a fixed platen 5 fixed to a base B, a movable platen 6 slidably arranged on the base B, and a mold clamping case 7 similarly slidably arranged on the base B. The fixed platen 5 and the mold clamping case 7 are connected by tie rods 9, 9, ..., and the movable platen 6 is penetrated by tie rods 9, 9, ... A mold clamping mechanism is provided between the movable platen 6 and the mold clamping case 7. A mold clamping cylinder can also be used as the mold clamping mechanism, but a toggle mechanism 10 is used in the first embodiment. A fixed side mold 12 is provided on the fixed platen 5, and a movable side mold 13 is provided on the movable platen 6. In the mold clamping device 2, when the toggle mechanism 10 is driven, the fixed side mold 12 and the movable side mold 13 are opened and closed.

[0026] <Injection device>

[0027] In the first embodiment, the injection device 3 is a metal injection device that melts and injects metal as an injection material. The injection device 3 includes a heating cylinder 15, a screw 16 that is placed in the heating cylinder 15 in a manner that can be driven in the rotational direction and the axial direction, and a screw driving device 17 that drives the screw 16. A support table 18 is provided on the base B in a slidable manner. A heating cylinder support structure 20 that supports the heating cylinder 15 described later and the screw driving device 17 are provided on the support table 18. Therefore, the injection device 3 as a whole approaches or moves away from the mold clamping device 2. The heating cylinder 15 is provided with an injection nozzle 22, and a hopper 21 of the first embodiment described in detail later.

[0028] <Heating cylinder support structure>

[0029] like Figure 2 As shown, the heating cylinder support structure 20 includes a support plate 24 for supporting the heating cylinder 15 at the rear end, and a flange plate 25 for supporting the heating cylinder 15 at the center. The support plate 24 and the flange plate 25 are connected by four rods 27, 27, ... A joint plate 29 is provided at the center of the heating cylinder 15, and the joint plate 29 is fixed to the flange plate 25.

[0030] <Hopper>

[0031] like Figure 2 , Figure 3 As shown, the hopper 21 of the first embodiment includes a hopper body 31 and a connection structure 32 connecting the hopper body 31 and the heating cylinder 15. The hopper body 31 is provided on the support plate 24 (i.e., the heating cylinder support member) supporting the heating cylinder 15 via a rotating plate 34. The rotating plate 34 is connected to the support plate 24 by a pin 36 and can rotate freely horizontally. According to this, the hopper body 31 can also be moved in a horizontally rotating manner integrally with the rotating plate 34.

[0032] like Figure 3As shown in FIG. 1 , the connection structure 32 includes a base 38 provided on the heating cylinder 15, a connection pipe 39, and a cylindrical portion 40 provided on a component (i.e., the swivel plate 34) closer to the hopper body 31 than the connection pipe 39. A through hole 44 is formed in the base 38. The through hole 44 is connected to a material supply hole 42 formed in the heating cylinder 15 and used to supply the injection material. Figure 4 As shown, the inner wall surface of the through hole 44 has an annular step portion 45 formed into a stepped shape by expanding the diameter of the through hole 44 above the through hole 44 (i.e., near the opening). The inner diameter of the annular step portion 45 is slightly larger than the outer diameter of the connecting pipe 39 described later. Accordingly, the connecting pipe 39 is smoothly inserted into the annular step portion 45. In the first embodiment, the pedestal 38 is connected to the heating cylinder 15 via the heat insulating material 46. Accordingly, heat conduction from the heating cylinder 15 to the pedestal 38 is suppressed.

[0033] The connecting pipe 39 is formed into a cylinder in this embodiment. The connecting pipe 39 is loosely fitted with the cylindrical portion 40 provided on the rotating plate 34 and can slide freely in the vertical direction. That is, the outer diameter of the cylindrical portion 40 is slightly smaller than the inner diameter of the connecting pipe 39. The lower end of the connecting pipe 39 is inserted into the annular step 45 of the base 38. If the lower end of the connecting pipe 39 is inserted into the annular step 45, the cylindrical portion 40 and the base 38 are connected by the connecting pipe 39. In the first embodiment, the connecting pipe 39 is formed of a transparent resin (for example, polycarbonate). Accordingly, it is possible to visually identify the connection between the hopper body 31 (refer to Figure 2 , Figure 3 ) is sent to the injection material of the heating cylinder 15 via the connecting pipe 39. As described above, the temperature rise of the base 38 is suppressed by the effect of the heat insulating material 46. Accordingly, the degradation of the resin connecting pipe 39 due to heat is suppressed.

[0034] like Figure 2 , Figure 3 As shown, the hopper 21 of the first embodiment is provided with a shutter 48 below the hopper body 31. The shutter 48 is freely movable relative to the housing 49. When the shutter 48 is inserted deep into the housing 49, the material outlet 51 opened below the hopper body 31 is closed. On the other hand, when the shutter 48 is retracted, the material outlet 51 is opened.

[0035] <Function>

[0036] The function of the hopper 21 of the first embodiment is described. First, the hopper 21 is Figure 2 , Figure 3The description begins with the state in which the hopper body 31 is connected to the heating cylinder 15 as shown. When performing maintenance on the heating cylinder 15 such as replacing the heating cylinder 15, the hopper body 31 that hinders the maintenance is removed from the heating cylinder 15. First, the baffle 48 is inserted deep into the shell 49. Thereby, as described above, the material outlet 51 of the hopper body 31 is closed. In this state, one or several molding cycles are carried out. Thereby, the injection material in the connecting tube 39 will also be consumed. Because the connecting tube 39 is transparent, it is easy to visually recognize whether the injection material remains. Next, the connecting tube 39 is slid upward in the vertical direction. Thereby, as Figure 4 As shown, the lower end of the connection pipe 39 is pulled out from the annular step portion 45. That is, the connection between the connection pipe 39 and the base 38 is released.

[0037] Next, if Figure 5 As shown, the hopper body 31 is rotated. In the middle of the rotation, the connecting pipe 39 is pulled out from the cylindrical portion 40 (refer to Figure 4 ) is pulled out. That is, Figure 5 As shown, the connecting pipe 39 is removed. This can prevent the connecting pipe 39 from contacting the rod 27 during the rotation of the hopper body 31. In other words, the hopper body 31 can be rotated without interfering with the rod 27. When the hopper body 31 is completely removed from the heating cylinder 15, the maintenance of the heating cylinder 15 is performed. Figure 5 As shown in FIG. 5 , a container 53 is disposed below the hopper body 31 as necessary. When the damper 48 is opened, the injection material remaining in the hopper body 31 can be moved to the container 53.

[0038] Next, when the hopper body 31 is to be connected to the heating cylinder 15 after the maintenance of the heating cylinder 15 is completed, the reverse process to the above process can be performed. That is, the hopper body 31 is rotated, and the connecting pipe 39 is inserted into the cylindrical portion 40 (see Figure 4 ). The hopper body 31 is further rotated to align the connection pipe 39 with the base 38. If the connection pipe 39 is slid downward along the cylindrical portion 40 in the vertical direction, Figure 3 As shown, the lower end of the connecting pipe 39 is inserted into the annular step 45. That is, the connection between the hopper body 31 and the heating cylinder 15 is completed.

[0039] [Modification of the first embodiment]

[0040] A modification of the first embodiment will be described. The modification of the first embodiment is a modification of the metal injection molding machine 1 (see Figure 1 ), only the hopper 21 is deformed, and the other structures are the same as those of the first embodiment. Accordingly, the description of the structure of the metal injection molding machine 1 is omitted. The hopper 21' of the modified example of the first embodiment is shown in Figure 6The hopper 21' of the modified example of the first embodiment is different from the hopper 21 of the first embodiment (see Figure 3 ) The same parts are marked with the same reference numbers and detailed descriptions are omitted.

[0041] In the hopper 21' of the modified example of the first embodiment, the connecting pipe 39' is deformed. That is, the connecting pipe 39' is formed with a flange portion 55 at the upper end portion. Moreover, in the hopper 21' of the modified example of the first embodiment, a stopper 56 is provided on the swing plate 34. The stopper 56 is configured to clamp the flange portion 55 of the connecting pipe 39'. Accordingly, the vertical sliding of the connecting pipe 39' is allowed, while the removal of the connecting pipe 39' is restricted. The hopper 21' of the modified example of the first embodiment is also easy to remove from the heating cylinder 15.

[0042] [Second embodiment]

[0043] The second embodiment is described. The injection molding machine of the second embodiment is Figure 1 The metal injection molding machine 1 of the first embodiment shown in the figure is similarly constructed except that Fig. 7A , Figure 7B The hopper 21A shown is different from the heating cylinder support structure 20A that supports the heating cylinder 15. Accordingly, a detailed description of the injection molding machine is omitted.

[0044] In the second embodiment, the heating cylinder support structure 20A has a support plate 24A. The heating cylinder 15 is supported at its rear end by the support plate 24A.

[0045] The hopper 21A of the second embodiment is different from the hopper 21 of the first embodiment (see Figure 2 , Figure 3 , Figure 4 ) are only partially different. The same reference numerals are given to the same parts and the description thereof is omitted. In the hopper 21A of the second embodiment, the hopper body 31 is provided on the sliding plate 60. The sliding plate 60 is formed with a slit-shaped guide hole 61. The pin 63 is inserted into the guide hole 61, and the sliding plate 60 is mounted on the support plate 24A via the pin 63. When the hopper 21A of the second embodiment is to be removed from the heating cylinder 15, it is similar to the hopper 21A of the first embodiment (refer to Figure 5 ) Similarly, the connecting pipe 39 is slid upward to separate it from the base 38. Figure 7B As shown, the hopper body 31 is slid horizontally. Next, the connecting pipe 39 is removed. The hopper 21A can be removed from the heating cylinder 15 in this way.

[0046] <Other Modifications>

[0047] The injection molding machine 1 of the first embodiment and the second embodiment can be modified in various ways. For example, the connecting pipe 39 (see Figure 3 , Figure 4 ) to be deformed. The connecting tube 39 is described as a cylinder, but the connecting tube 39 may be, for example, a prism. Furthermore, the sliding direction of the connecting tube 39 is not limited to the vertical direction up and down. For example, by having the cylindrical portion 40 have a shape extending in an oblique direction intersecting the vertical direction, the connecting tube 39 can be slid obliquely. Furthermore, the connecting tube 39 may also be configured to be movable in a manner other than sliding. Furthermore, the material constituting each component may also be deformable. That is, as a material constituting the connecting tube 39, acrylic resin, polyethylene, and AS resin may be used instead of transparent polycarbonate. Furthermore, as a material constituting the connecting tube 39, an opaque resin or other material may also be used. When the pedestal 38 is formed of a high temperature resistant material, the pedestal 38 (refer to Figure 3 ) is provided in the heating cylinder 15 without the need for insulating material 46.

[0048] Other points can also be deformed. For example, at the hoppers 21, 21', 21A (see Figure 2 , Figure 6 , Fig. 7A ) In the embodiment, the baffle 48 is not necessary. When the hopper 21, 21', 21A is removed from the heating cylinder 15, if the injection material is not left in the hopper body 31 in advance, the injection material will not be scattered around even without the baffle 48.

[0049] The injection molding machine 1 of the first embodiment and the second embodiment is a metal injection molding machine 1 that melts and injects metal as an injection material (see Figure 1 However, the hoppers 21, 21', and 21A used in the first and second embodiments can also be used in an injection molding machine that melts and injects a resin as an injection material.

[0050] In summary, the invention completed by the inventors of this application has been specifically described based on the embodiments, but the present invention is not limited to the embodiments described above, and various changes can be made without departing from the scope of the invention. The multiple examples described above can also be appropriately combined for implementation.

[0051] Here, the features of the above-mentioned embodiments of the hoppers 21, 21', 21A, the injection device 3, and the injection molding machine 1 are briefly summarized and exemplified in the following [1] to

[21] . [1]

[0053] A hopper (21, 21', 21A) of an injection molding machine, comprising:

[0054] A hopper body (31) which is provided on a heating cylinder support member (20) supporting a heating cylinder (15) of an injection device (3) and is configured to be horizontally movable; and a connecting structure (32) which connects the heating cylinder (15) and the hopper body (31).

[0055] The connecting structure (32) has:

[0056] a pedestal (38) disposed on the heating cylinder (15) and having a through hole (44) communicating with a material supply hole (42) of the heating cylinder (15); and a connecting pipe (39) connecting the pedestal (38) and the hopper body (31),

[0057] The connecting pipe (39) is movable relative to the hopper body (31), and can be separated from the base (38) by moving relative to the hopper body (31). [2]

[0059] The hopper (21, 21') of the injection molding machine according to the above-mentioned [1], wherein:

[0060] The hopper body (31) is provided on the heating cylinder support member (20) and is configured to be movable in a horizontally rotating manner. [3]

[0062] The hopper (21A) of the injection molding machine according to the above-mentioned [1], wherein:

[0063] The hopper body (31) is provided on the heating cylinder support member (20) and is configured to be movable in a horizontally sliding manner. [4]

[0065] The hopper (21, 21', 21A) of the injection molding machine according to the above [1] or [2], wherein:

[0066] A baffle (48) is also provided, the baffle (48) being provided below the hopper body (31) and opening and closing a material outlet (51) of the hopper body (31) which opens downward. [5]

[0068] The hopper (21, 21', 21A) of the injection molding machine according to the above [1] or [2], wherein:

[0069] The connecting pipe (39) is movable in a vertical direction relative to the hopper body (31), and is detachable from the pedestal (38) by moving upward in the vertical direction. [6]

[0071] The hopper (21, 21', 21A) of the injection molding machine according to the above [1] or [2], wherein:

[0072] It also includes a cylindrical portion (40) disposed below the hopper body (31).

[0073] The connecting pipe (39) has a cylindrical shape.

[0074] The outer diameter of the cylindrical portion (40) is smaller than the inner diameter of the connecting pipe (39).

[0075] The inner wall surface of the through hole (44) has an annular step portion (45) formed by expanding the diameter of the through hole (44) near the opening of the through hole (44).

[0076] The connecting pipe (39) is slidably engaged with the cylindrical portion (40). When the connecting pipe (39) is slid in one direction, the end of the connecting pipe (39) is engaged with the annular step portion (45). When the connecting pipe (39) is slid in another direction, the end of the connecting pipe (39) is separated from the annular step portion (45). [7]

[0078] The hopper (21, 21', 21A) of the injection molding machine according to the above [1] or [2], wherein:

[0079] The connecting pipe (39) is formed of a transparent resin material. [8]

[0081] The hopper (21, 21', 21A) of the injection molding machine according to the above [1] or [2], wherein:

[0082] It also includes a heat insulating component (46) disposed between the pedestal (38) and the heating cylinder (15). [9]

[0084] The hopper (21') of the injection molding machine according to the above-mentioned [1] or [2], wherein:

[0085] The connecting pipe (39) has a flange portion (55) at one end portion of the connecting pipe (39).

[0086] The hopper (21) further includes a stopper (56) capable of engaging with the flange portion (55).

[0087] The connecting pipe (39) is allowed to move relative to the hopper body (31), and is restricted from being removed from the stopper (56) by the engagement between the flange portion (55) and the stopper (56).

[10]

[0089] An injection device (3) comprising:

[0090] Heating cylinder (15);

[0091] a screw (16) disposed in the heating cylinder (15); and

[0092] a hopper (21, 21', 21A) for supplying injection material into the heating cylinder (15),

[0093] The hopper (21, 21', 21A) has:

[0094] a hopper body (31) which is provided on a heating cylinder support member (20) supporting the heating cylinder (15) and is configured to be horizontally movable; and a connecting structure (32) which connects the heating cylinder (15) and the hopper body (31).

[0095] The connecting structure (32) has:

[0096] a pedestal (38) provided on the heating cylinder (15) and having a through hole (44) communicating with a material supply hole (42) of the heating cylinder (15); and a connecting pipe (39) connecting the pedestal (38) and the hopper body (31),

[0097] The connecting pipe (39) is movable relative to the hopper body (31), and can be separated from the base (38) by moving relative to the hopper body (31).

[11]

[0099] The injection device (3) according to the above-mentioned

[10] , wherein:

[0100] The hopper body (31) is provided on the heating cylinder support member (20) and is configured to be movable in a horizontally rotating manner.

[12]

[0102] The injection device (3) according to the above-mentioned

[10] , wherein:

[0103] The hopper body (31) is provided on the heating cylinder support member (20) and is configured to be movable in a horizontally sliding manner.

[13]

[0105] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0106] A baffle (48) is also provided, the baffle (48) being provided below the hopper body (31) and opening and closing a material outlet (51) of the hopper body which opens downward.

[14]

[0108] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0109] The connecting pipe (39) is movable in a vertical direction relative to the hopper body (31), and is detachable from the pedestal (38) by moving upward in the vertical direction.

[15]

[0111] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0112] It also includes a cylindrical portion (40) disposed below the hopper body (31).

[0113] The connecting pipe (39) has a cylindrical shape.

[0114] The outer diameter of the cylindrical portion (40) is smaller than the inner diameter of the connecting pipe (39).

[0115] The inner wall surface of the through hole (44) has an annular step portion (45) formed by expanding the diameter of the through hole (44) near the opening of the through hole (44).

[0116] The connecting pipe (39) is slidably engaged with the cylindrical portion (40). When the connecting pipe (39) is slid in one direction, the end of the connecting pipe (39) is engaged with the annular step portion (45). When the connecting pipe (39) is slid in another direction, the end of the connecting pipe (39) is separated from the annular step portion (45).

[16]

[0118] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0119] The connecting pipe (39) is formed of a transparent resin material.

[17]

[0121] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0122] It also includes a heat insulating component (46) disposed between the pedestal (38) and the heating cylinder (15).

[18]

[0124] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0125] The connecting pipe (39) has a flange portion (55) at one end portion of the connecting pipe (39).

[0126] The hopper (21) further comprises a stopper (56) capable of engaging with the flange portion (55).

[0127] The connecting pipe (39) is allowed to move relative to the hopper body (31), and is restricted from being removed from the stopper (56) by the engagement between the flange portion (55) and the stopper (56).

[19]

[0129] The injection device (3) according to the above-mentioned

[10] or

[11] , wherein:

[0130] The injection device (3) is a metal injection device (3) that uses metal as the injection material.

[20]

[0132] An injection molding machine comprising:

[0133] A mold clamping device (2) for clamping the mold; and

[0134] an injection device (3) for injecting injection material into the mold,

[0135] The injection device (3) comprises:

[0136] Heating cylinder (15);

[0137] a screw (16) disposed in the heating cylinder (15); and

[0138] a hopper (21, 21', 21A) for supplying injection material into the heating cylinder (15),

[0139] The hopper (21, 21', 21A) has:

[0140] a hopper body (31) which is provided on a heating cylinder support member (20) supporting the heating cylinder (15) and is configured to be horizontally movable; and a connecting structure (32) which connects the heating cylinder (15) and the hopper body (31).

[0141] The connecting structure (32) has:

[0142] a pedestal (38) provided on the heating cylinder (15) and having a through hole (44) communicating with a material supply hole (42) of the heating cylinder (15); and a connecting pipe (39) connecting the pedestal (38) and the hopper body (31),

[0143] The connecting pipe (39) is movable relative to the hopper body (31), and can be separated from the base (38) by moving relative to the hopper body (31). [twenty one]

[0145] The injection molding machine according to the above-mentioned

[20] , wherein:

[0146] The hopper body (31) is provided on the heating cylinder support member (20) and is configured to be movable in a horizontally rotating manner.

[0147] This application is based on the Japanese patent application (Japanese Patent Application No. 2022-163142) filed on October 11, 2022, the contents of which are incorporated herein by reference.

[0148] Industrial Applicability

[0149] The hopper, injection device, and injection molding machine of the injection molding machine of the present invention can facilitate maintenance of the heating cylinder. The present invention having such an effect can be used, for example, in a metal injection molding machine using metal as an injection material.

[0150] Description of Reference Numerals

[0151] 1 Metal Injection Molding Machine

[0152] 2 Clamping device

[0153] 3 Injection device

[0154] 5 Fixed plate

[0155] 6 Movable plate

[0156] 7. Mould shell

[0157] 9 Tie rod

[0158] 10. Toggle mechanism

[0159] 12 Fixed side mold

[0160] 13 Movable side mold

[0161] 15 Heating cylinder

[0162] 16 Screw

[0163] 17 Screw drive

[0164] 18 Supporting platform

[0165] 20 Heating cylinder support structure (heating cylinder support component)

[0166] 21 Hopper

[0167] 22 Injection nozzle

[0168] 24 Support plate

[0169] 25 Flange plate

[0170] 27 shots

[0171] 29 Connector plate

[0172] 31 Hopper body

[0173] 32 Connection structure

[0174] 34 Turntable

[0175] 36 Pins

[0176] 38 pedestal

[0177] 39 Connecting pipe

[0178] 40 Cylinder

[0179] 42 Material supply hole

[0180] 44 Through hole

[0181] 45 Circular Steps

[0182] 46 Insulation materials (insulation components)

[0183] 48 Baffle

[0184] 49 Shell

[0185] 51 Material Export

[0186] 53 Container

[0187] 55 Flange

[0188] 56 Stopper

[0189] 60 Sliding Plate

[0190] 61 Guide hole

[0191] 63 pins.

Claims

1. A hopper for an injection molding machine, characterized in that: have: a hopper body provided on a heating cylinder support member that supports a heating cylinder of an injection device and configured to be horizontally movable; and A connecting structure connecting the heating cylinder and the hopper body, The connection structure has: a pedestal provided on the heating cylinder and having a through hole communicating with the material supply hole of the heating cylinder; and a connecting pipe connecting the pedestal and the hopper body, The connecting pipe is movable relative to the hopper body, and can be separated from the pedestal by moving relative to the hopper body.

2. The hopper of the injection molding machine according to claim 1, characterized in that: The hopper body is provided on the heating cylinder support member and is configured to be movable in a horizontally swinging manner.

3. The hopper of the injection molding machine according to claim 1, characterized in that: The hopper body is provided on the heating cylinder support member and is configured to be movable in a horizontally slidable manner.

4. The hopper of the injection molding machine according to claim 1 or 2, characterized in that: A damper is further provided, the damper being provided below the hopper body and opening and closing a material outlet of the hopper body which opens downward.

5. The hopper of the injection molding machine according to claim 1 or 2, characterized in that: The connecting pipe is movable in a vertical direction relative to the hopper body, and is detachable from the pedestal by moving upward in the vertical direction.

6. The hopper of the injection molding machine according to claim 1 or 2, characterized in that: It also includes a cylindrical portion disposed below the hopper body, The connecting pipe has a cylindrical shape. The outer diameter of the cylindrical portion is smaller than the inner diameter of the connecting pipe. The inner wall surface of the through hole has an annular step portion formed by expanding the diameter of the through hole near the opening of the through hole. The connecting pipe is slidably engaged with the cylindrical portion, and when the connecting pipe is slid in one direction, the end of the connecting pipe is engaged with the annular step portion, and when the connecting pipe is slid in the other direction, the end of the connecting pipe is separated from the annular step portion.

7. The hopper of the injection molding machine according to claim 1 or 2, characterized in that: The connection pipe is formed of a transparent resin material.

8. The hopper of the injection molding machine according to claim 1 or 2, characterized in that: A heat insulating member is further provided between the pedestal and the heating cylinder.

9. The hopper of the injection molding machine according to claim 1 or 2, characterized in that: The connecting pipe has a flange portion at one end of the connecting pipe. The hopper further comprises a stopper capable of engaging with the flange portion. The connecting pipe is allowed to move relative to the hopper body, and is restricted from being removed from the stopper by the engagement between the flange portion and the stopper.

10. An injection device, characterized in that: have: Heating cylinder; a screw disposed in the heating cylinder; and a hopper that supplies injection material into the heating cylinder, The hopper has: a hopper body, which is provided on a heating cylinder supporting member supporting the heating cylinder and is configured to be horizontally movable; and a connecting structure, which connects the heating cylinder and the hopper body, The connection structure has: a pedestal provided on the heating cylinder and having a through hole communicating with the material supply hole of the heating cylinder; and a connecting pipe connecting the pedestal and the hopper body, The connecting pipe is movable relative to the hopper body, and can be separated from the pedestal by moving relative to the hopper body.

11. The injection device according to claim 10, characterized in that The hopper body is provided on the heating cylinder support member and is configured to be movable in a horizontally swinging manner.

12. The injection device according to claim 10, characterized in that The hopper body is provided on the heating cylinder support member and is configured to be movable in a horizontally slidable manner.

13. The injection device according to claim 10 or 11, characterized in that A damper is further provided, the damper being provided below the hopper body and opening and closing a material outlet of the hopper body which opens downward.

14. The injection device according to claim 10 or 11, characterized in that The connecting pipe is movable in a vertical direction relative to the hopper body, and is detachable from the pedestal by moving upward in the vertical direction.

15. The injection device according to claim 10 or 11, characterized in that It also includes a cylindrical portion disposed below the hopper body, The connecting pipe has a cylindrical shape. The outer diameter of the cylindrical portion is smaller than the inner diameter of the connecting pipe. The inner wall surface of the through hole has an annular step portion formed by expanding the diameter of the through hole near the opening of the through hole. The connecting pipe is slidably engaged with the cylindrical portion, and when the connecting pipe is slid in one direction, the end of the connecting pipe is engaged with the annular step portion, and when the connecting pipe is slid in the other direction, the end of the connecting pipe is separated from the annular step portion.

16. The injection device according to claim 10 or 11, characterized in that The connection pipe is formed of a transparent resin material.

17. The injection device according to claim 10 or 11, characterized in that A heat insulating member is further provided between the pedestal and the heating cylinder.

18. The injection device according to claim 10 or 11, characterized in that The connecting pipe has a flange portion at one end of the connecting pipe. The hopper has a stopper that can engage with the flange portion. The connecting pipe is allowed to move relative to the hopper body, and is restricted from being removed from the stopper by the engagement between the flange portion and the stopper.

19. The injection device according to claim 10 or 11, characterized in that The injection device is a metal injection device that uses metal as the injection material.

20. An injection molding machine, characterized in that: have: A mold clamping device that clamps the mold; and an injection device for injecting an injection material into the mold, The injection device comprises: Heating cylinder; a screw disposed in the heating cylinder; and a hopper that supplies injection material into the heating cylinder, The hopper has: a hopper body, which is provided on a heating cylinder supporting member supporting the heating cylinder and is configured to be horizontally movable; and a connecting structure, which connects the heating cylinder and the hopper body, The connection structure has: a pedestal provided on the heating cylinder and having a through hole communicating with the material supply hole of the heating cylinder; and a connecting pipe connecting the pedestal and the hopper body, The connecting pipe is movable relative to the hopper body, and can be separated from the pedestal by moving relative to the hopper body.

21. The injection molding machine according to claim 20, characterized in that The hopper body is provided on the heating cylinder support member and is configured to be movable in a horizontally swinging manner.

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