Injection molding machine

Abstract

To provide an injection molding machine that can be efficiently inspected by a maintenance engineer.SOLUTION: The present disclosure is directed to an injection molding machine (1) equipped with a plurality of air drive devices (20, 27, 30) including two or more of an air drive clamper device (27), a platen drop prevention device (20), and an air drive shut-off nozzle device (30). In this disclosure, at least two or more air valves (41, 50) that supply air to the air drive devices (20, 27, 30) are provided in the same location, an air apparatus fitting part (35), of the injection molding machine.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an injection molding machine equipped with an air-driven device driven by air, such as a clamping device, a shut-off nozzle device, etc.

Background Art

[0002] An injection molding machine is composed of, for example, a mold clamping device, an injection device, etc., as described in Patent Document 1. Many injection molding machines are provided with a plurality of air-driven devices driven by air. For example, a clamping device and a shut-off nozzle device can be cited as air-driven devices. The clamping device is a device that clamps / releases a mold according to the mold number of the mold clamping device, and the shut-off nozzle device is a device that closes / opens an injection flow path at the injection nozzle of the injection device. Each of these air-driven devices is provided with an air valve, and the air valve is controlled by a controller.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In many air-driven devices, the corresponding air valves are provided in the vicinity of the air-driven device. By providing the air valve in the vicinity of the air-driven device, it is possible to manage the drive target and the corresponding air equipment together. However, problems to be solved can also be found. The injection molding machine is regularly inspected by maintenance technicians, but there is a problem that this inspection work becomes complicated. Maintenance technicians specializing in air equipment check the operations of a plurality of air valves, regulators, etc. sequentially. However, since a plurality of air valves are distributed in the injection molding machine, the maintenance technician has to inspect the air valves while moving. That is, the inspection becomes complicated.

[0005] In the present disclosure, an injection molding machine is provided that enables efficient inspection by maintenance technicians.

[0006] Other problems and novel features will become apparent from the description of this specification and the accompanying drawings.

Means for Solving the Problems

[0007] The present disclosure targets an injection molding machine including a clamping device for clamping a mold, an injection device for injecting an injection material, and a plurality of air-driven devices. The air-driven device includes any two or more of an air-driven clamper device for clamping / unclamping the mold, an air-driven mold platen fall prevention device for preventing the fall of the mold platen of the clamping device, and an air-driven shut-off nozzle device. The present disclosure is configured such that at least two or more air valves for supplying air to the air-driven device are provided at an air equipment attachment portion, which is the same location in the injection molding machine.

Effect of the Invention

[0008] The present disclosure enables efficient inspection by maintenance technicians in an injection molding machine.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0010] Hereinafter, specific embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. For clarity of explanation, the following description and drawings are appropriately simplified. In each drawing, the same reference numerals are given to the same elements, and redundant explanations are omitted as necessary. Also, there are parts where hatching is omitted so that the drawings do not become complicated.

[0011] [The Present Embodiment] <Injection Molding Machine> The injection molding machine according to the present embodiment consists of a vertical injection molding machine 1, and a side view is shown in FIG. 1. The vertical injection molding machine 1 according to the present embodiment includes a mold clamping device 2, an injection device 3 provided above the mold clamping device 2, and a controller 4 for controlling these. As will be described in detail later, the vertical injection molding machine 1 according to the present embodiment is provided with a plurality of air-driven devices 20, 27, 30 driven by air.

[0012] <Mold Clamping Device> The clamping device 2 includes a fixed platen 9 fixed to the bed 7, an upper movable platen 10 provided above the fixed platen 9, and a lower movable platen (not shown) provided in the bed 7. In this embodiment, the upper movable platen 10 and the lower movable platen are connected by three tie bars 12, 12,.... When a clamping mechanism (not shown) provided between the lower movable platen and the fixed platen 9 is driven, the upper movable platen 10 is driven up and down. A turntable 14 is provided on the fixed platen 9 of the clamping device 2. The turntable 14 rotates 180 degrees, that is, reverses, around one tie bar 12.

[0013] <Injection device> The injection device 3 is provided on the upper movable platen 10 of the clamping device 2. The injection device 3 includes a heating cylinder 16, a screw (not shown) provided in the heating cylinder 16, a drive mechanism 17 for driving the screw, and lifting devices 18, 18 for lifting and lowering the entire injection device 3. The injection device 3 rotates the screw by the drive mechanism 17 to melt the injection material, and drives the screw in the axial direction to inject the injection material.

[0014] <Air drive device> A plurality of air drive devices 20, 27, 30 provided in the vertical injection molding machine 1 according to this embodiment will be described. First, the clamping device 2 is provided with a platen fall prevention device 20 as the air drive device 20. The platen fall prevention device 20 is composed of a safety bar 21 fixed to the upper movable platen 10 and a lock portion 22 provided on the fixed platen 9. A plurality of grooves 23, 23,... are formed in the safety bar 21 at predetermined intervals. When the lock portion 22 is driven by air, an engaging member provided on the lock portion 22 engages with a predetermined groove 23 to prevent the upper movable platen 10 from falling. The engaging member is not shown in FIG. 1.

[0015] The clamping device 2 is provided with another air drive device 27, 27, …, namely, clamp devices 27, 27, …, one on the upper movable platen 10 and two on the turntable 14, respectively. When air is supplied to these clamp devices 27, 27, …, a mold (not shown) is clamped or unclamped.

[0016] The injection device 3 is also provided with an air drive device 30. Specifically, it is a shut-off nozzle device 30. The shut-off nozzle device 30 is provided at the tip of the heating cylinder 16 and includes a needle valve 31. When air is supplied, the needle valve 31 advances and the injection material flow path in the shut-off nozzle device 30 is closed. Or the needle valve 31 retracts and the injection material flow path is opened.

[0017] <Air equipment mounting part> In the vertical injection molding machine 1 according to the present embodiment, air equipment for supplying air to the three air drive devices 20, 27, 30 described above, namely, the platen fall prevention device 20, the clamp devices 27, 27, …, and the shut-off nozzle device 30, are collectively mounted on one air equipment mounting part 35. For the vertical injection molding machine 1 according to the present embodiment, a top view is shown in FIG. 3. The side facing the controller 4 is called the 180-degree side, and the opposite side is called the 0-degree side. In the present embodiment, the air equipment mounting part 35 is provided on the 0-degree side of the vertical injection molding machine 1. More specifically, as shown in FIGS. 1 and 2, the vertical injection molding machine 1 is provided with a housing 37 with a temperature control panel installed on the 0-degree side. An air equipment mounting part 35 made of a plate-like member is provided near this housing 37. Note that the air equipment mounting part 35 is arranged so as not to interfere when the housing 37 is opened and closed so as not to interfere with the maintenance of the temperature control panel.

[0018] The air equipment mounting section 35 is provided with a plurality of air equipment. First, as shown in FIG. 1, a master valve 39 is provided on one surface of the air equipment mounting section 35, and high-pressure air is supplied from a predetermined air source installed in the factory (not shown). A residual pressure release valve 40 is provided on the master valve 39, and when the supply of air from the factory is stopped, the air is safely released to prevent malfunction of the air drive devices 20, 27, and 30.

[0019] In the vicinity of the master valve 39, a multi-air valve unit 41 in which a plurality of air valves are grouped together is provided. Air supply pipes 43, 43,... extend from the individual air valves constituting the multi-air valve unit 41 and are connected to the corresponding air drive devices 20, 30, that is, the die board fall prevention device 20 and the shut-off nozzle device 30. By the way, for the die board fall prevention device 20, the air supply pipe 43 is directly connected to the air valve of the multi-air valve unit 41. However, for the shut-off nozzle device 30, the air supply pipe 43 is once connected to a relay BOX 45 provided in the vicinity of the shut-off nozzle device 30, and the air supply pipe 43 is connected to the shut-off nozzle device 30 from the relay BOX 45. By interposing the relay BOXes 45, 45 in this way, even when the shut-off nozzle device 30 is removed, the state in which the air equipment and the like are attached can be maintained.

[0020] By the way, for the air supply pipes 43, 43 connected to the shut-off nozzle device 30, regulators 47, 47 and flow control valves 48, 48 are provided. The air supplied to the shut-off nozzle device 30 is controlled to a desired pressure and a desired flow rate.

[0021] On the other side of the air equipment mounting portion 35, as shown in FIG. 2, an air valve 50 for a clamper is provided. From the air valve 50 for a clamper, air supply pipes 43, 43 extend and are connected to relay BOXes 45, 45 provided on the upper movable platen 10 and the turntable 14, respectively, as shown in FIG. 1. Then, from these relay BOXes 45, 45, the air supply pipes 43, 43 are connected to the clamper devices 27, 27,.... The vertical injection molding machine 1 according to the present embodiment has a large number of air equipment provided at one air equipment mounting portion 35 in this way. Therefore, when performing maintenance such as inspection on the air equipment, it can be carried out efficiently.

[0022] [Comparative Example] The vertical injection molding machine 101 according to the comparative example will be described with reference to FIG. 4. The vertical injection molding machine 101 according to the comparative example is also schematically composed of a mold clamping device 102, an injection device 103, a controller 104, etc. A plurality of air driving devices 120, 127, 130 are also provided in the vertical injection molding machine 101 according to the comparative example. First, a mold plate fall prevention device 120 composed of a safety bar 121 provided on the upper movable platen 110 of the mold clamping device 102 and a lock portion 122 provided on the fixed platen 109 is provided. And clamper devices 127, 127,... are provided on the upper movable platen 110 and the turntable 114, respectively. Further, a shut-off nozzle device 130 having a needle valve 131 is provided on the heating cylinder 116 of the injection device 103.

[0023] In the vertical injection molding machine 101 according to the comparative example, the air equipment that supplies air to these air drive devices 120, 127, and 130 is provided dispersedly. First, the air valve 151 that supplies air to the mold platen fall prevention device 120 is housed in the bed 107. And the air bubbler 152 that supplies air to the shut-off nozzle device 130 is provided on the safety cover 155. And the air valve 153 that supplies air to the clamper devices 127, 127,... is provided on the back surface of the housing 137 in which the temperature control panel is installed. Thus, in the vertical injection molding machine 101 according to the comparative example, since the air equipment is provided dispersedly, when performing maintenance such as inspection on the air equipment, the maintenance technician needs to perform it while moving. The maintenance is complicated.

[0024] [Modification example of the present embodiment] The modification example of the present embodiment will be described with reference to FIG. 5. The vertical injection molding machine 1A according to the modification example is only different in some configurations from the vertical injection molding machine 1 (see FIGS. 1 and 2) according to the present embodiment, and is generally configured in the same manner as the vertical injection molding machine 1 according to the present embodiment. Therefore, for the same configuration, that is, for the members that exhibit the same operation, the same reference numerals are attached and the description is omitted. The vertical injection molding machine 1A according to the modification example of the present embodiment has the air equipment attachment portion 35A deformed. Specifically, the back surface of the housing 37 in which the temperature control panel is installed has become the air equipment attachment portion 35A. That is, various air equipment, that is, a master valve 39, a multi-air valve unit 41, a clamper air valve 50, a regulator 47, etc. are provided on the back surface of the housing 37. Also in the vertical injection molding machine 1A according to the modification example, since the air equipment is collectively provided in one air equipment attachment portion 35A, maintenance can be easily performed.

[0025] [Other modification examples] The vertical injection molding machine 1 according to this embodiment can be modified in other ways. For example, in this embodiment, it was described that all the air devices are provided in the air device mounting portion 35 (see FIGS. 1 and 2). However, some of the air devices may be provided in other places, as long as two or more air valves 41 and 50 are provided in the air device mounting portion 35. This is because the burden of maintenance work can be reduced. Furthermore, in the vertical injection molding machine 1 according to this embodiment, it was described that three air drive devices 20, 27, and 30 are provided. However, it is not necessary to provide all of these air drive devices 20, 27, and 30, and at least two of them may be provided. This is because at least two air valves 41 and 50 can be provided in the air device mounting portion 35.

[0026] Although this embodiment has been described by the vertical injection molding machine 1 according to this embodiment, the same can be implemented even with a horizontal injection molding machine. That is, by providing an air device mounting portion 35 and arranging the air devices for the plurality of air drive devices 20, 27, and 30 together, maintenance can be similarly easily implemented.

[0027] Although the invention made by the present inventor has been specifically described based on the embodiments, it goes without saying that the present invention is not limited to the embodiments already described, and various modifications are possible without departing from the gist thereof. The plurality of examples described above can also be implemented in appropriate combinations.

Explanation of Reference Numerals

[0028] 1 Vertical injection molding machine 2 Mold clamping device 3 Injection device 4 Controller 7 Bed 9 Fixed platen 10 Upper movable platen 12 Tie bar 14 Turntable 16 Heating cylinder 17 Drive mechanism 18 Lifting device 20 Mold platen fall prevention device 21 Safety rod 22 Locking portion 23 Groove 27 Clamping device 30 Shut-off nozzle device 31 Needle valve 35 Air equipment mounting part 37 Housing 39 Master valve 40 Air vent valve 41 Multi-air valve unit 43 Air supply pipe 45 Relay BOX 47 Regulator 48 Flow control valve 50 Air valve for clamp

Claims

1. A clamping device for clamping a mold, An injection device for injecting an injection material, And a plurality of air-driven devices, The air-driven device includes any two or more of an air-driven clamper device attached to the clamping device to clamp / unclamp the mold, an air-driven mold platen fall prevention device configured to prevent the fall of the mold platen of the clamping device, and an air-driven shut-off nozzle device provided in the injection device, An injection molding machine, wherein at least two or more air valves for supplying air to the air-driven device are provided at an air equipment mounting portion that is the same location.

2. The injection molding machine according to claim 1, wherein the injection molding machine is a vertical injection molding machine.

3. The injection molding machine according to claim 1 or 2, wherein the injection molding machine includes a master valve, and air supplied from the outside is supplied to the air valve via the master valve, and the master valve is provided at the air equipment mounting portion.

4. Regarding the air-driven device in which the air valve is provided at the air equipment mounting portion, a regulator, a residual pressure release valve, and a flow rate control valve are provided at the air equipment mounting portion. The injection molding machine according to claim 1 or 2.

5. The vertical injection molding machine according to claim 2 includes a controller. When the side where the controller faces and the molded product is taken out is the 180-degree side, and the opposite side is the 0-degree side, the air equipment mounting portion is provided on the 0-degree side.

6. The vertical injection molding machine according to claim 5 has a housing including a temperature control panel arranged on the 0-degree side, and a plate-like member is provided in the vertical direction in the vicinity of the housing, and the plate-like member serves as the air equipment mounting portion.

7. The vertical injection molding machine according to claim 6 has a power-related housing on the 0-degree side where a servo amplifier and a power supply device are installed, and the plate-like member is arranged at a position that does not interfere with the opening and closing of the power-related housing.

8. The vertical injection molding machine according to claim 5 has a housing including a temperature control panel arranged on the 0-degree side, and the back surface of the housing serves as the air equipment mounting portion.

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