Injection molding machine and molten resin supply system

Abstract

To directly connect a device for outputting molten resin to an injection molding machine without disposing a connecting pipe having a joint that deforms to absorb a movement of a portion of the injection molding machine.SOLUTION: An injection molding machine 10 includes: an injection device 30 that injects an input molten resin into a mold 41; a mold clamping device 40 that supports the mold 41 and clamps the mold 41; a stand 50 that is installed on a floor surface 200 and supports the injection device 30 and the mold clamping device 40; and sliding members 11 and 12 that allow the stand 50 to slide independently of the injection device 30 and the floor surface 200 in a protruding direction of an injection part 32 of the injection device 30.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an injection molding machine and a molten resin supply system.

Background Art

[0002] In order to directly input the molten resin output from a decontamination machine that removes contaminants contained in the resin to be recycled using a mechanical recycling method into an injection molding machine, the decontamination machine and the injection molding machine may be connected by a pipe. At that time, in order to absorb the movement of the position associated with the purge operation of the injection device of the injection molding machine, a connecting pipe including a sleeve-type expansion and contraction pipe joint that serves as a pipe joint may be provided (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When a connecting pipe including a sleeve-type telescopic pipe joint is provided, the sleeve slides in accordance with the movement of the position of the injection device, and moves back and forth between the inside and the outside of the pipe. Therefore, the molten resin passing through the inside of the pipe may be exposed to the outside of the pipe while adhering to the surface of the sleeve. In this case, when the sleeve slides, the exposed molten resin may be rubbed and carbonized, and may be mixed into the molten resin as a solid foreign matter. Further, as joints other than the sleeve-type telescopic pipe joint, there are swivel joints, flexible hoses, etc. These can also be deformed in accordance with the movement of the position of the heating cylinder, but structurally, the molten resin passing through the inside may be retained. Furthermore, these joints are required to have heat resistance, pressure resistance, etc. for passing the molten resin, but those that satisfy all of these are limited. For these reasons, there has been a demand for the realization of a method capable of directly connecting a device for outputting molten resin and an injection molding machine without arranging a connecting pipe having a joint that deforms to absorb the movement of the position of the injection device.

[0005] An object of the present invention is to enable direct connection between a device for outputting molten resin and an injection molding machine without arranging a connecting pipe having a joint that deforms to absorb the movement of a part of the position of the injection molding machine.

Means for Solving the Problems

[0006] The injection molding machine of the present invention completed for such an object includes an injection device that injects the input molten resin into a mold, a mold clamping device that supports the mold and clamps the mold, a mount installed on the floor surface that supports the injection device and the mold clamping device, and a plurality of movable means that make the mount movable in the protruding direction of the injection part of the injection device independently of the injection device and the floor surface. It is an injection molding machine characterized by comprising. Here, when the mount that supports the mold clamping device moves in the protruding direction independently of the injection device and the floor surface, the injection device and the mold may be separated or brought closer to each other. Further, the mount may be movable in the protruding direction independently of the injection device via a first movable means among the plurality of movable means, and may be movable in the protruding direction independently of the floor surface via a second movable means among the plurality of movable means. Furthermore, one or a plurality of drive units for moving the mount in the protruding direction may be further provided. Furthermore, a synchronization mechanism for synchronizing the operation of the injection device moving in the protruding direction independently of the mount and the operation of the mount moving in the protruding direction independently of the floor surface may be further provided. Furthermore, a first locking member for locking the movement of the mount in the protruding direction may be further provided. Furthermore, a second locking member for locking the movement of the injection device in the protruding direction may be further provided. From another perspective, the injection molding machine of the present invention includes an injection device for injecting the input molten resin into a mold, a mold clamping device for supporting the mold and performing mold clamping of the mold, a mount for supporting the injection device and the mold clamping device, and a movable means for making the mold clamping device movable in the protruding direction of the injection part of the injection device independently of the injection device and the mount. Here, when the mold clamping device moves in the protruding direction independently of the injection device and the mount, the injection device and the mold may be separated or brought closer. Furthermore, a drive unit for moving the mold clamping device in the protruding direction may be further provided. Furthermore, a locking member for locking the movement of the mold clamping device in the protruding direction may be further provided. From another perspective, the molten resin supply system of the present invention includes an output device having an outlet for outputting molten resin, the position of which is fixed, and an injection molding machine for molding a molded product using the output molten resin. The injection molding machine includes an injection device having an inlet with a fixed position relative to the outlet for injecting the molten resin input into the inlet into a mold, a clamping device for supporting the mold and clamping the mold, a base installed on the floor for supporting the injection device and the clamping device, and a plurality of movable means for making the base movable independently of the injection device and the floor in the protruding direction of the injection part of the injection device. The molten resin supply system is characterized by comprising these components. From another perspective, the molten resin supply system of the present invention includes an output device having an outlet for outputting molten resin, the position of which is fixed, and an injection molding machine for molding a molded product using the output molten resin. The injection molding machine includes an injection device having an inlet with a fixed position relative to the outlet for injecting the molten resin input into the inlet into a mold, a clamping device for supporting the mold and clamping the mold, a base for supporting the injection device and the clamping device, and movable means for making the clamping device movable independently of the injection device and the base in the protruding direction of the injection part of the injection device. The molten resin supply system is characterized by comprising these components.

Advantages of the Invention

[0007] According to the present invention, the device for outputting molten resin and the injection molding machine can be directly connected without arranging a connecting pipe having a joint that deforms to absorb the movement of a part of the injection molding machine.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for carrying out the invention

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. <First Embodiment> (Configuration of the molten resin supply system 1) FIG. 1 is a diagram showing an example of the overall configuration of the molten resin supply system 1 according to the first embodiment. The molten resin supply system 1 shown in FIG. 1 is a system configured to include an injection molding machine 10 that performs injection molding using molten resin, and an output device 20 that outputs molten resin to the injection molding machine 10.

[0010] 〔Injection molding machine 10〕 The injection molding machine 10 is a molding machine used for manufacturing a molded product using molten resin. The injection molding machine 10 is connected to the output device 20 by a connection pipe 100. The connection pipe 100 is a rigid linear metal pipe and has heat resistance and pressure resistance for passing molten resin. Further, the inner surface of the connection pipe 100 is smooth and has a non-stagnant structure in which molten resin hardly stays.

[0011] The injection molding machine 10 includes an injection device 30, a mold clamping device 40, and a pedestal 50. The injection device 30 has an input port 31 for inputting molten resin and an injection part 32 for injecting the molten resin input into the input port 31. The input port 31 is provided on the top side in the vertical direction of the injection molding machine 10 and is connected to the bottom side in the vertical direction of the connection pipe 100. When the molten resin output from the output device 20 is input into the input port 31 through the connection pipe 100, the injection device 30 heats, kneads, and measures the input molten resin, and injects the molten resin from the injection part 32 into the mold 41. The injection device 30 is supported by the pedestal 50 via a sliding member 11 as a first movable means. The sliding member 11 is composed of, for example, one or more linear guides or the like. The specific configuration of the sliding member 11 will be described later.

[0012] Hereinafter, in the embodiments of the present invention, as an aspect of the movable means, a sliding member that makes the pedestal 50 (see FIG. 1) according to the first embodiment or the mold clamping device 60 (see FIG. 6) according to the second embodiment described later slidable will be described as an example. That is, the movable means may be any means that makes the pedestal 50 or the like movable. Thus, it may be a means that makes the pedestal 50 or the like movable by making it slidable as in the embodiments of the present invention, or may be a means that makes the pedestal 50 or the like movable by a combination of gears or the like, for example.

[0013] The mold clamping device 40 is a device that supports the mold 41 and clamps the mold 41 into which the molten resin has been injected. The mold 41 is a mold that opens and closes in the left-right direction of FIG. 1 (that is, the horizontal direction, and the direction in which the injection part 32 of the injection device 30 protrudes toward the mold 41). Hereinafter, the left-right direction of FIG. 1 will be referred to as the "protrusion direction", the left side of FIG. 1 will be referred to as the "first side", and the right side will be referred to as the "second side". The mold clamping device 40 is supported by the pedestal 50 disposed on the bottom side in the vertical direction. In the first embodiment, the mold clamping device 40 and the pedestal 50 are fixed.

[0014] The gantry 50 is a member that supports the injection device 30 and the mold clamping device 40 from the ground side in the vertical direction. Specifically, the gantry 50 supports the injection device 30 from the ground side in the vertical direction via the sliding member 11, and is fixed to the mold clamping device 40 in a state where it supports the mold clamping device 40 from the ground side in the vertical direction of the mold clamping device 40. The gantry 50 is installed on the floor surface 200 via the sliding member 12 as the second movable means. The sliding member 12 is composed of, for example, one or more linear guides or the like. The specific configuration of the sliding member 12 will be described later.

[0015] 〔Output device 20〕 The output device 20 is a device that outputs molten resin. The output device 20 removes contaminants contained inside the resin such as a PET bottle to be recycled by, for example, mechanical recycling (physical recycling method) or chemical recycling (chemical recycling method), and outputs it as molten resin. The output device 20 has an output port 21 for outputting molten resin. The output port 21 is connected to the top side in the vertical direction of the connecting pipe 100, and its position is fixed. The molten resin output from the output port 21 is input into the injection molding machine 10 through the connecting pipe 100.

[0016] "Mechanical recycling" refers to a series of processes in which resins such as recovered used PET bottles are sorted, crushed, and washed to remove surface dirt and foreign substances, and then exposed to high temperatures to diffuse contaminants remaining inside the molten resin, for example, into the vacuum inside the output device 20 for decontamination. "Chemical recycling" refers to a series of processes in which resins such as recovered used PET bottles are sorted, chemically decomposed, and repolymerized to decontaminate contaminants.

[0017] (Purge operation) In the injection device 30 of the injection molding machine 10, carbide accumulation occurs inside. Carbide accumulation refers to a phenomenon in which the molten resin input into the injection device 30 stays, burns, carbonizes, and accumulates on the internal screw. Carbide accumulation becomes a factor causing molding defects due to the carbide accumulated on the screw peeling off. Therefore, an operation to eliminate carbide accumulation (hereinafter referred to as "purge operation") is periodically performed by squeezing out the molten resin from the injection part 32 of the injection device 30 and discharging it to the outside.

[0018] The purge operation includes an operation of separating the injection device 30 and the mold 41 in the protruding direction, and an operation of squeezing out the molten resin from the injection part 32 of the injection device 30 and discharging it to the outside. Specifically, as shown in FIG. 1, with the position of the injection device 30 in the protruding direction fixed, the positions of the mold clamping device 40 and the gantry 50 in the protruding direction are slid to the first side from the operating position represented by the solid line to the purge operation position represented by the dashed-dotted line. In the first embodiment, since the mold clamping device 40 is fixed to the gantry 50, when the gantry 50 slides to the first side in the protruding direction, the mold clamping device 40 also moves to the first side in the protruding direction accordingly. Thereby, a space is formed between the injection device 30 and the mold 41, and the molten resin is squeezed out from the injection part 32 of the injection device 30 and discharged to the outside using this space.

[0019] The sliding member 11 is a member that enables sliding between the injection device 30 and the gantry 50. The sliding member 12 is a member that enables sliding between the gantry 50 and the floor surface 200. The injection device 30 is connected to the output port 21 of the output device 20 via a highly rigid connection pipe 100, and the position of the output port 21 is fixed. Therefore, in the injection molding machine 10, the gantry 50 is made slidable without sliding the injection device 30. That is, the gantry 50 is slidable independently of the injection device 30 and the floor surface 200 in the protruding direction.

[0020] Further, the gantry 50 can slide in the protruding direction independently of the injection device 30 and the floor surface 200, which may cause instability in the protruding direction. That is, an unintended force may be applied to the gantry 50, causing the gantry 50 to move in the protruding direction. In such a case, a locking member 53 as a first locking member for locking the sliding of the gantry 50 in the protruding direction may be provided. The locking member 53 is not particularly limited as long as it can lock the sliding of the gantry 50 in the protruding direction. For example, it may be a latch mechanism or the like that fixes the positional relationship between the gantry 50 and the floor surface 200.

[0021] Further, as described above, the injection device 30 is slidably supported by the sliding member 11 with respect to the gantry 50. However, depending on the form of the connection pipe 100 (for example, low rigidity), the injection device 30 may also slide in conjunction with the sliding of the gantry 50, etc., and the injection device 30 may become unstable in the protruding direction. In such a case, a locking member 54 as a second locking member for locking the sliding of the injection device 30 in conjunction with the sliding of the gantry 50 may be provided.

[0022] The locking member 54 is not particularly limited as long as it can lock the sliding of the injection device 30 in the protruding direction. For example, the positional relationship between the injection device 30 and the floor surface 200 may be fixed by a highly rigid metal structure. Also, the connection pipe 100, which is fixed in position by being connected to the output port 21 of the output device 20 and the input port 31 of the injection device 30, can also function as a second locking member.

[0023] As a purge operation, when sliding the gantry 50 in the protruding direction, it may be slid manually by an operator, or a drive unit for driving the sliding member 11 or the sliding member 12 may be provided. The drive unit is composed of, for example, a motor or the like. When a drive unit is provided to slide the gantry 50 in the protruding direction, for example, as shown in FIG. 1, as a first drive unit, a drive unit 51 for operating the sliding member 11 may be provided, and as a second drive unit, a drive unit 52 for operating the sliding member 12 may be provided. The number of drive units is not particularly limited. For example, only the drive unit 51 may be provided, or only the drive unit 52 may be provided. Also, both the drive unit 51 and the drive unit 52 may be provided, or three or more drive units (not shown) may be provided.

[0024] (Modification example) FIG. 2 is a diagram showing an example of the configuration when a synchronization mechanism 55 is provided in the injection molding machine 10. As described above, when the injection device 30 becomes unstable in the protruding direction, such as when the injection device 30 also slides in conjunction with the sliding of the gantry 50, a locking member 54 (see FIG. 1) as a second locking member for locking the injection device 30 from sliding in conjunction with the sliding of the gantry 50 may be provided. Thereby, even if the gantry 50 slides in the protruding direction, the injection device 30 is locked from sliding in conjunction with the sliding of the gantry 50. Also, by providing the synchronization mechanism 55 in the injection molding machine 10, the injection device 30 can be prevented from sliding in conjunction with the sliding of the gantry 50.

[0025] The synchronization mechanism 55 is a mechanism that operates in conjunction with the drive of the drive unit 51 that operates the sliding member 11, and synchronizes the operation of the injection device 30 sliding independently of the gantry 50 in the protruding direction and the operation of the gantry 50 sliding independently of the floor surface 200 in the protruding direction. Specifically, the synchronization mechanism 55 synchronizes, for example, by using one or more belts or chains to link the operation of the injection device 30 sliding in the protruding direction and the operation of the gantry 50 sliding in the protruding direction.

[0026] FIG. 3 is a diagram showing an example of the configuration of a linear guide which is a specific example of the sliding member 11 constituting the injection molding machine 10. A linear guide, which is a specific example of the sliding member 11, is configured to include a linear rail portion 111, a block portion 112 that slides along the rail portion 111, and a bearing portion 113 that enables smooth sliding of the block portion 112. When the linear guide shown in FIG. 3 is arranged between the injection device 30 and the gantry 50 in FIG. 1 as the sliding member 11, one or more linear guides are installed at the position on the top surface 56 of the gantry 50 in the vertical direction where the injection device 30 slides. Specifically, the linear guide is installed such that the direction of the rail portion 111 is parallel to the protruding direction, and the injection device 30 is installed such that the block portion 112 supports the injection device 30 from the bottom side in the vertical direction.

[0027] In this case, the length of the rail portion 111 in the protruding direction is determined in consideration of the size of the injection device 30, the length of the gantry 50 sliding in the protruding direction, etc. Also, the length of the block portion 112 in the protruding direction and the number of block portions 112 to be arranged are not particularly limited as long as the block portion 112 sliding along the rail portion 111 can stably support the injection device 30. For example, the length of the block portion 112 in the protruding direction and the number of block portions 112 to be arranged are determined according to the size of the injection device 30, etc.

[0028] Also, the linear guide shown as a specific example of the sliding member 11 in FIG. 3 can also be used as a specific example of the sliding member 12 in FIG. 1. In this case, the linear guide shown in FIG. 3 is installed between the gantry 50 and the floor surface 200 in FIG. 1 as the sliding member 12. Specifically, one or more linear guides are installed at the position where the gantry 50 slides on the floor surface 200 such that the direction of the rail portion 111 is parallel to the protruding direction. Also, the gantry 50 is installed such that one or more block portions 112 support the gantry 50 from the bottom side in the vertical direction.

[0029] The length of the rail portion 111 in the protruding direction is determined in consideration of the length of the gantry 50 in the protruding direction, the length that the gantry 50 slides in the protruding direction, and the like. Further, the length of the block portion 112 in the protruding direction and the number of block portions 112 arranged on the rail portion 111 are not particularly limited as long as the block portion 112 sliding along the rail portion 111 can stably support the gantry 50. For example, the length of the block portion 112 in the protruding direction and the number of block portions 112 arranged on the rail portion 111 are determined according to the length of the gantry 50 in the protruding direction and the like.

[0030] In addition, in the injection molding machine 10 of FIG. 1, in order to ensure the stability and horizontality of the injection molding machine 10, legs such as leveling pads and adjuster feet may be installed. In this case, for example, according to the number of legs to be installed, the length of the linear guide as the sliding member 12 in the protruding direction and the number of linear guides are determined, and the linear guide is installed between each leg and the floor surface 200.

[0031] The configuration of the linear guide shown in FIG. 3 is merely an example, and any conventional linear guide can be adopted as the sliding members 11 and 12 in FIG. 1. For example, a structure (for example, one or a plurality of screw holes, etc.) for joining the injection device 30 and the gantry 50 to the block portion 112 may be provided on the top side surface of the block portion 112 in the vertical direction shown in FIG. 3. Further, the sliding members 11 and 12 in FIG. 1 are not limited to linear guides, and any member may be used as long as the gantry 50 can slide in the protruding direction with respect to the injection device 30 and the floor surface 200.

[0032] <Conventional purge operation> FIG. 4 is a diagram showing an outline of a purge operation performed by a conventional injection device. FIG. 5 is a diagram showing a specific example of a joint of a connecting pipe that deforms according to the purge operation of a conventional injection device. FIG. 4 shows an output device having an output port for outputting molten resin, an injection molding machine for molding a molded product using the output molten resin, and a connecting pipe composed of a pipe connecting the output device and the injection molding machine.

[0033] In FIG. 4, the output port of the output device is fixed so that its position does not move. The injection molding machine includes an injection device, a mold clamping device, and a pedestal. The injection device has an input port for inputting molten resin, and injects the input molten resin from the injection part into the mold. The mold clamping device supports the mold and clamps the mold into which the molten resin has been injected. The pedestal supports the injection device and the mold clamping device from the ground side in the vertical direction and is fixed to the floor surface. In FIG. 4, the protruding direction is the same as the protruding direction in FIG. 1 described above, is the horizontal direction, and is the direction in which the injection part of the injection device protrudes toward the mold.

[0034] The pedestal in FIG. 4 supports the injection device from the ground side in the vertical direction via a sliding member. The sliding member is operated by a driving part. For this reason, the injection device can slide independently of the pedestal fixed to the floor surface in the protruding direction. The injection device slides independently of the pedestal in the protruding direction as a purge operation performed periodically. The purge operation includes an operation of separating the injection device and the mold in the protruding direction and an operation of squeezing out the molten resin from the injection part of the injection device and discharging it to the outside. Specifically, as shown in FIG. 4, with the positions of the mold clamping device and the pedestal in the protruding direction fixed, the position of the injection device in the protruding direction is slid to the second side from the position during operation represented by the solid line to the position during the purge operation represented by the dashed-dotted line. As a result, a space is formed between the injection device and the mold, and the molten resin is squeezed out from the injection part of the injection device and discharged to the outside using this space.

[0035] At this time, the connecting pipe that connects the output port of the output device and the input port of the injection device by a pipe deforms a part of the pipe according to the purge operation of the injection device, thereby absorbing the movement of the position of the injection device accompanying the purge operation. Thereby, even when the position of the output port of the output device is fixed, it can correspond to the movement of the position of the input port due to the purge operation of the injection device.

[0036] FIG. 5 shows, as specific examples of joints of connecting pipes that deform according to the purge operation of a conventional injection device, a plurality of swivel joints, a sleeve-type telescopic pipe joint, and a flexible hose. A swivel joint is a joint that rotatably connects a plurality of pipes. A sleeve-type telescopic pipe joint is a joint that slidably moves a sleeve to telescopically connect two pipes having the same central axis direction in the central axis direction. A flexible hose is a flexible hose-shaped joint that connects two pipes.

[0037] Even if the position in the protruding direction of the input port of the injection device moves due to the purge operation of the injection device, the plurality of swivel joints absorb the movement within the rotatable range of each of the plurality of swivel joints. However, due to the structure of the swivel joint, a slight gap is formed inside, and thus a part of the molten resin passing through the swivel joint may enter the gap. In this case, retention of the molten resin occurs, and there is a risk that the retained molten resin solidifies and mixes into the molten resin as a solid foreign matter.

[0038] Even if the position in the protruding direction of the input port of the injection device moves due to the purge operation of the injection device, the sleeve-type telescopic pipe joint absorbs the movement within the reciprocating sliding distance range of the sleeve. However, due to the structure of the sleeve-type telescopic pipe joint, since the sleeve moves back and forth between the inside and outside of the pipe, the molten resin exposed outside the pipe may be rubbed and carbonized, and this may mix into the molten resin as a solid foreign matter. In particular, the longer the reciprocating sliding distance of the sleeve and the larger the area of the portion exposed outside the pipe, the easier it is to form solid foreign matter.

[0039] Even if the position in the protruding direction of the input port of the injection device moves due to the purge operation of the injection device, the flexible hose absorbs the movement within the bendable range of the flexible hose. However, due to the structure of the flexible hose, a large number of waveform gaps are formed inside, and thus a part of the molten resin passing through the inside of the flexible hose may enter the gaps. In this case, retention of the molten resin occurs, and there is a risk that the retained molten resin solidifies and mixes into the molten resin as a solid foreign matter.

[0040] Thus, the swivel joint, the sleeve type expansion pipe joint, and the flexible hose, which are joints of the connecting pipe, can all be deformed in accordance with the movement of the position in the protruding direction of the input port of the injection device. However, in any of the joints, there is a problem in that the molten resin stays inside due to the structure, and further, heat resistance, pressure resistance, etc. for passing the molten resin are required. For this reason, it is preferable that the injection molding machine 10 shown in FIG. 1 has a configuration that can be directly connected to the output device 20 without arranging a connecting pipe having a joint that deforms to absorb the movement of the position of the injection device 30.

[0041] To summarize the above, the injection molding machine 10 according to the first embodiment of the present invention only needs to have the following configuration, and various embodiments can be adopted. That is, the injection molding machine 10 includes an injection device 30 that injects the input molten resin into the mold 41, a mold clamping device 40 that supports the mold 41 and clamps the mold 41, a pedestal 50 installed on the floor surface 200 that supports the injection device 30 and the mold clamping device 40, and a plurality of movable means (for example, sliding members 11 and 12) that make the pedestal 50 movable in the protruding direction of the injection part 32 of the injection device 30 independently of the injection device 30 and the floor surface 200. The injection molding machine is characterized by comprising these components.

[0042] As a result, the pedestal 50 installed on the floor surface 200 can move in the protruding direction of the injection part 32 of the injection device 30 independently of the injection device 30 and the floor surface 200. Therefore, for example, as a purge operation, the injection device 30 and the mold 41 can be separated or brought closer. As a result, the output device 20 and the injection molding machine 10 can be directly connected without arranging a connecting pipe that deforms to absorb the movement of the position of the injection device 30, which is a part of the injection molding machine 10.

[0043] Here, when the pedestal 50 that supports the mold clamping device 40 moves in the protruding direction independently of the injection device 30 and the floor surface 200, the injection device 30 and the mold 41 may be separated or brought closer. As a result, the gantry 50 installed on the floor surface 200 can be moved in the protruding direction independently of the injection device 30 and the floor surface 200. Therefore, for example, as a purge operation, the injection device 30 and the mold 41 can be separated or brought closer to each other.

[0044] Further, the gantry 50 may be movable in the protruding direction independently of the injection device 30 via a sliding member 11 as a first movement enabling means among a plurality of movement enabling means, and may be movable in the protruding direction independently of the floor surface 200 via a sliding member 12 as a second movement enabling means among the plurality of movement enabling means. As a result, the gantry 50 can be moved in the protruding direction independently of the injection device 30 via the sliding member 11, and can be moved in the protruding direction independently of the floor surface 200 via the sliding member 12. Therefore, the gantry 50 can be moved independently in the protruding direction with the position of the injection device fixed.

[0045] Furthermore, the gantry 50 may further include one or more driving parts (for example, driving parts 51 and 52) for moving the gantry 50 in the protruding direction. As a result, since the one or more driving parts move the gantry 50 in the protruding direction, for example, it becomes possible to automatically perform a purge operation.

[0046] Furthermore, a synchronization mechanism 55 may be further provided to synchronize the operation of the injection device 30 moving independently in the protruding direction with respect to the gantry 50 and the operation of the gantry 50 moving independently in the protruding direction with respect to the floor surface 200. As a result, the synchronization mechanism 55 synchronizes the operation of the gantry 50 moving independently in the protruding direction with respect to the injection device 30 and the operation of the gantry 50 moving independently in the protruding direction with respect to the floor surface 200. As a result, for example, without providing a locking member 54 as a second locking member, it is possible to suppress the injection device 30 from moving in conjunction with the movement of the gantry 50.

[0047] Furthermore, the gantry 50 may further include a locking member 53 as a first locking member for locking the movement of the gantry 50 in the protruding direction. As a result, the locking member 53 as the first locking member locks the gantry 50 from moving in the protruding direction, so that it is possible to prevent the gantry 50 from becoming unstable in the protruding direction.

[0048] Further, a locking member 54 may be further provided as a second locking member that locks the injection device 30 from moving in the protruding direction. As a result, the locking member 54 as the second locking member locks the injection device 30 from moving in the protruding direction, so that it is possible to prevent the injection device 30 from moving in conjunction with the movement of the gantry 50.

[0049] Moreover, the molten resin supply system 1 according to the first embodiment of the present invention may have the following configuration and can take various embodiments. That is, the molten resin supply system 1 includes an output device 20 having an output port 21 for outputting molten resin, the position of the output port 21 being fixed, and an injection molding machine 10 for molding a molded product using the output molten resin. The injection molding machine 10 has an input port 31 whose position with respect to the output port 21 is fixed, an injection device 30 for injecting the molten resin input into the input port 31 into the mold 41, a mold clamping device 40 for supporting the mold 41 and clamping the mold 41, a gantry 50 installed on the floor surface 200 and supporting the injection device 30 and the mold clamping device 40, and a plurality of movable means (for example, sliding members 11 and 12) for making the gantry 50 movable independently of the injection device 30 and the floor surface 200 in the protruding direction of the injection part 32 of the injection device 30. The molten resin supply system is characterized by comprising these components.

[0050] As a result, the gantry 50 installed on the floor surface 200 can move independently of the injection device 30 and the floor surface 200 in the protruding direction of the injection part 32 of the injection device 30. For example, as a purge operation, the injection device 30 and the mold 41 can be separated or brought closer together. As a result, the output device 20 and the injection molding machine 10 can be directly connected without arranging a connecting pipe that deforms to absorb the movement of the position of the injection device 30, which is a part of the injection molding machine 10.

[0051] <Second Embodiment> (Configuration of the molten resin supply system 2) FIG. 6 is a diagram showing an example of the overall configuration of the molten resin supply system 2 according to the second embodiment. The molten resin supply system 2 shown in FIG. 6 is a system configured to include an injection molding machine 80 that performs injection molding using molten resin, and an output device 20 that outputs molten resin to the injection molding machine 80. Note that the output device 20 is the same as that in the first embodiment described above, and the description thereof is omitted.

[0052] 〔Injection molding machine 80〕 The injection molding machine 80 is a molding machine used for manufacturing molded products made of molten resin, similar to the injection molding machine 10 in FIG. 1 described above, and is connected to the output device 20 on the ground side in the vertical direction. The injection molding machine 80 and the output device 20 are connected by a connecting pipe 100.

[0053] The injection molding machine 80 includes an injection device 30, a mold clamping device 60, and a pedestal 70. The injection device 30 basically has the same configuration as that in the first embodiment. That is, when the molten resin output from the output device 20 enters the input port 31 through the connecting pipe 100, the injection device 30 heats, kneads, and measures the input molten resin, and injects the molten resin from the injection part 32 toward the inside of a mold 61 described later. However, different from the first embodiment, the injection device 30 is fixed to the pedestal 70 that supports itself.

[0054] The mold clamping device 60 is a device that supports the mold 61 and clamps the mold 61 into which the molten resin is injected. The mold 61 is a mold that opens and closes in the left - right direction (horizontal direction in FIG. 6, and the direction in which the injection part 32 of the injection device 30 protrudes toward the mold 61). Hereinafter, the left - right direction in FIG. 6 is referred to as the "protrusion direction". The mold clamping device 60 is slidably supported in the protrusion direction via a sliding member 13 on a pedestal 70 arranged on the ground side in the vertical direction. That is, in the first embodiment, the mold clamping device 40 and the pedestal 50 are fixed, but in the second embodiment, the mold clamping device 60 is configured to be slidable independently of the pedestal 70 in the protrusion direction.

[0055] The mount 70 is a member that supports the injection device 30 and the mold clamping device 60 from the ground side in the vertical direction. Specifically, the mount 70 supports the injection device 30 in a state of being fixed to the ground side in the vertical direction of the injection device 30, and supports the mold clamping device 60 from the ground side in the vertical direction via the sliding member 13. The sliding member 13 supports the mold clamping device 60 so as to be slidable in the protruding direction independently of the mount 70. The sliding member 13 is composed of, for example, one or a plurality of linear guides or the like, similarly to the sliding members 11 and 12 in FIG. 1.

[0056] (Purge operation) The injection device 30 of the injection molding machine 80 periodically performs a purge operation.

[0057] The purge operation includes an operation of separating the injection device 30 and the mold 61 in the protruding direction, and an operation of squeezing out the molten resin from the injection part 32 of the injection device 30 and discharging it to the outside. Specifically, as shown in FIG. 6, with the positions of the injection device 30 and the mount 70 in the protruding direction fixed, the position of the mold clamping device 60 in the protruding direction is moved to the first side from the position during operation represented by the solid line to the position during the purge operation represented by the alternate long and short dash line. That is, different from the first embodiment, since the mold clamping device 60 is not fixed to the mount 70 in the second embodiment, the mount 70 is fixed and the mold clamping device 60 is slid to the first side in the protruding direction. Thereby, a space is formed between the injection device 30 and the mold 61, and the molten resin is squeezed out from the injection part 32 of the injection device 30 and discharged to the outside using that space.

[0058] The clamping device 60 is slidable in the protruding direction independently of the injection device 30 and the mount 70, and thus the clamping device 60 may become unstable in the protruding direction. That is, due to an unintended force being applied to the clamping device 60, the clamping device 60 may move in the protruding direction. In such a case, a locking member 72 for locking the sliding of the clamping device 60 in the protruding direction may be provided. The locking member 72 is not particularly limited as long as it can lock the sliding of the clamping device 60 in the protruding direction, and may be, for example, a latch mechanism that fixes the positional relationship between the clamping device 60 and the mount 70.

[0059] When sliding the clamping device 60 in the protruding direction, it may be slid by the manual force of an operator, or a driving unit 71 for driving the sliding member 13 may be provided. The driving unit 71 is composed of, for example, a motor or the like.

[0060] To summarize the above, the injection molding machine 80 according to the second embodiment of the present invention may have the following configuration and can take various embodiments. That is, the injection molding machine 80 includes an injection device 30 that injects the input molten resin into the mold 61, a clamping device 60 that supports the mold 61 and clamps the mold 61, a mount 70 that supports the injection device 30 and the clamping device 60, and a movable means (for example, a sliding member 13) that makes the clamping device 60 movable in the protruding direction of the injection part 32 of the injection device 30 independently of the injection device 30 and the mount 70. The injection molding machine is characterized by this.

[0061] As a result, the clamping device 60 that supports the mold 61 can move in the protruding direction of the injection part 32 of the injection device 30 independently of the injection device 30 and the mount 70. Therefore, for example, as a purge operation, the injection device 30 and the mold 61 can be separated or brought closer. As a result, the output device 20 and the injection molding machine 80 can be directly connected without arranging a connecting pipe that deforms to absorb the movement of the position of the injection device 30, which is a part of the injection molding machine 80.

[0062] Here, when the mold clamping device 60 moves in the protruding direction independently of the injection device 30 and the gantry 70, the injection device 30 and the mold 61 may be separated or approximated. Thus, since the mold clamping device 60 can be moved in the protruding direction independently of the injection device 30 and the gantry 70, for example, as a purge operation, the injection device 30 and the mold 61 can be separated or approximated.

[0063] Further, a driving unit 71 for moving the mold clamping device 60 in the protruding direction independently of the injection device 30 and the gantry 70 may be further provided. Thus, since the driving unit 71 moves the mold clamping device 60 in the protruding direction, for example, it becomes possible to automatically perform a purge operation.

[0064] Further, a locking member 72 for locking the movement of the mold clamping device 60 in the protruding direction may be further provided. Thus, since the locking member 72 locks the movement of the mold clamping device 60 in the protruding direction, it is possible to suppress the mold clamping device 60 from becoming unstable in the protruding direction.

[0065] Further, the molten resin supply system 2 according to the second embodiment of the present invention may have the following configuration, and various embodiments can be adopted. That is, the molten resin supply system 2 includes an output device 20 having an output port 21 for outputting molten resin, and the position of the output port 21 is fixed, and an injection molding machine 80 for molding a molded product using the output molten resin. The injection molding machine 80 has an input port 31 whose position with respect to the output port 21 is fixed, an injection device 30 for injecting the molten resin input into the input port 31 into the mold 61, a mold clamping device 60 for supporting the mold 61 and clamping the mold 61, a gantry 70 for supporting the injection device 30 and the mold clamping device 60, and a sliding member 13 for making the mold clamping device 60 movable in the protruding direction of the injection part 32 of the injection device 30 independently of the injection device 30 and the gantry 70. It is a molten resin supply system characterized by that.

[0066] As a result, the mold clamping device 60 that supports the mold 61 can move in the protruding direction of the injection part 32 of the injection device 30 independently of the injection device 30 and the mount 70. For example, as a purge operation, the injection device 30 and the mold 61 can be separated or brought closer to each other. As a result, the output device 20 and the injection molding machine 80 can be directly connected without arranging a connecting pipe that deforms to absorb the movement of the position of the injection device 30, which is a part of the injection molding machine 80.

[0067] <Comparison of Embodiments> When comparing the injection molding machine 10 according to the first embodiment and the injection molding machine 80 according to the second embodiment, in both cases, with the position of the injection device 30 fixed, the injection device 30 and the mold clamping device can be separated and brought closer to each other in the protruding direction. As a result, a purge operation in the injection molding machine becomes possible. However, in the first embodiment, in the purge operation, the mount 50 that supports the mold clamping device 40 is slid in the protruding direction, while in the second embodiment, in the purge operation, only the mold clamping device 60 is slid in the protruding direction.

[0068] Regarding this point, in the first embodiment, in order to slide the mount 50 that supports the mold clamping device 40 independently of the injection device 30 and the floor surface 200 in the protruding direction, a sliding member 11 as a first movement enabling means is arranged between the injection device 30 and the mount 50, and a sliding member 12 as a second movement enabling means is arranged between the mount 50 and the floor surface 200. On the other hand, in the second embodiment, a movement enabling means for sliding the mold clamping device 60 independently of the injection device 30 and the mount 70 in the protruding direction is arranged. Specifically, a sliding member 13 is arranged between the mold clamping device 60 and the mount 70.

[0069] Here, in the first embodiment, it is necessary to arrange the sliding members 11 and 12, whereas in the second embodiment, only the sliding member 13 needs to be arranged. Therefore, it can be said that the number of parts used is small and it is simple. However, due to the original structure of the injection molding machine, the mold clamping device and the mount are fixed to improve the stability during operation. For this reason, when high stability during the operation of the injection molding machine is required, rather than the second embodiment in which the mold clamping device 60 is slidable in the protruding direction independently of the mount 70, the first embodiment in which the mold clamping device 40 is fixed to the mount 50 to form an integral structure is more preferable.

Explanation of Reference Numerals

[0070] 1, 2... Melting resin supply system, 10, 80... Injection molding machine, 11, 12, 13... Sliding member, 20... Output device, 21... Output port, 30... Injection device, 31... Input port, 32... Injection part, 40, 60... Mold clamping device, 41, 61... Mold, 50, 70... Mount, 51, 52... Driving part, 53, 54... Locking member, 55... Synchronization mechanism, 100... Connecting pipe, 200... Floor surface

Claims

1. An injection device for injecting the input molten resin into a mold, A clamping device that supports the mold and clamps the mold, A pedestal installed on the floor surface to support the injection device and the clamping device, A plurality of mobilizing means for making the pedestal movable independently of the injection device and the floor surface in the protruding direction of the injection part of the injection device, An injection molding machine characterized by comprising the above.

2. When the pedestal supporting the clamping device moves in the protruding direction independently of the injection device and the floor surface, the injection device and the mold are separated or approximated, characterized in that, The injection molding machine according to Claim 1.

3. The pedestal is movable in the protruding direction independently of the injection device via a first mobilizing means among the plurality of mobilizing means, and is movable in the protruding direction independently of the floor surface via a second mobilizing means among the plurality of mobilizing means, characterized in that, The injection molding machine according to Claim 1.

4. Further comprising one or more drive parts for moving the pedestal in the protruding direction, characterized in that, The injection molding machine according to Claim 1.

5. Further comprising a synchronization mechanism for synchronizing the operation of the injection device moving in the protruding direction independently of the pedestal and the operation of the pedestal moving in the protruding direction independently of the floor surface, characterized in that, The injection molding machine according to Claim 4.

6. Further comprising a first locking member for locking the movement of the pedestal in the protruding direction, characterized in that, The injection molding machine according to Claim 1.

7. Further comprising a second locking member for locking the movement of the injection device in the protruding direction, characterized in that, The injection molding machine according to Claim 1.

8. An injection device for injecting the input molten resin into a mold, A clamping device that supports the mold and clamps the mold, A pedestal that supports the injection device and the clamping device, A mobilizing means for making the clamping device movable independently of the injection device and the pedestal in the protruding direction of the injection part of the injection device, An injection molding machine characterized by comprising the above.

9. When the clamping device moves in the protruding direction independently of the injection device and the pedestal, the injection device and the mold are separated or approximated, characterized in that, The injection molding machine according to Claim 8.

10. The injection molding machine further comprises a driving unit for moving the mold clamping device in the protruding direction. The injection molding machine according to claim 8.

11. The injection molding machine further comprises a locking member for locking the movement of the mold clamping device in the protruding direction. The injection molding machine according to claim 8.

12. A melting resin supply system including an output device having an output port for outputting molten resin, the position of the output port being fixed, and an injection molding machine for molding a molded product using the output molten resin. The injection molding machine has an input port whose position relative to the output port is fixed, and an injection device for injecting the molten resin input into the input port into a mold; a mold clamping device for supporting the mold and clamping the mold; a gantry installed on the floor surface for supporting the injection device and the mold clamping device; a plurality of movable means for making the gantry movable independently of the injection device and the floor surface in the protruding direction of the injection part of the injection device; characterized by comprising the above.

13. A melting resin supply system including an output device having an output port for outputting molten resin, the position of the output port being fixed, and an injection molding machine for molding a molded product using the output molten resin. The injection molding machine has an input port whose position relative to the output port is fixed, and an injection device for injecting the molten resin input into the input port into a mold; a mold clamping device for supporting the mold and clamping the mold; a gantry for supporting the injection device and the mold clamping device; a movable means for making the mold clamping device movable independently of the injection device and the gantry in the protruding direction of the injection part of the injection device; characterized by comprising the above.

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