JP5814701B2 - Injection device, molding machine, and control method of injection device - Google Patents

Description

  The present invention relates to an injection apparatus including an injection unit that injects a plasticized material and a drive device that drives the injection unit. Another aspect of the present invention relates to a molding machine including an injection device that includes an injection unit that injects a plasticized material and a drive device that drives the injection unit. Another aspect of the present invention relates to a method for controlling an injection device including an injection unit that injects a plasticized material and a drive device that drives the injection unit.

  2. Description of the Related Art Conventionally, an injection device that injects a plasticized material includes a cylinder that stores the plasticized material, and a plunger that is stored in the cylinder and pushes out the material. In this type of injection device, a technique for forming a passage through which cooling water flows in a cylinder has been proposed in order to easily peel the material adhering to the shaft portion of the plunger from the shaft portion (see, for example, Patent Document 1). ).

  In addition, in order to reduce problems caused by the plasticized material entering the gap between the cylinder and the plunger, in the cylinder, a cylinder cooling passage is formed to flow the refrigerant in a range near the piston portion of the plunger, A technique for forming a piston cooling passage for allowing a coolant to flow through the piston portion has been proposed (see, for example, Patent Document 2).

JP 2000-263605 A JP 2000-117793 A

  On the other hand, a drive device that drives a plunger to inject plasticized material includes components and devices such as a ball screw. These parts and devices are affected by heat such as thermal expansion due to exposure to high temperatures. It is conceivable that the life of the driving device is reduced due to the influence of heat, or the accuracy of operation of the driving device is reduced. The techniques disclosed in Patent Documents 1 and 2 are not techniques for cooling the drive device.

  An object of the present invention is to provide an injection device that can suppress a decrease in the life of a drive device and a decrease in operation accuracy. Another object of the present invention is to provide a molding machine including an injection device that can suppress a decrease in the life of a drive device and a decrease in operation accuracy. Another object of the present invention is to provide a method of controlling an injection device that can suppress a decrease in the life of a drive device and a decrease in operation accuracy.

The injection device of the present invention includes an injection unit, a drive device, and a cooling means. The injection part includes an injection barrel that contains a plasticized material, and a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving forward and backward in the injection barrel. Is provided. The drive device drives the injection unit. The driving device includes a fixed side plate to which the injection barrel is fixed, a movement in which the plunger is fixed and movable in the forward and backward direction of the plunger in the injection barrel with respect to the fixed side plate. A side plate, a ball screw shaft that is rotatably supported by the fixed side plate and passes through the moving side plate, and is screwed to the ball screw shaft, and a thrust generated by the rotation of the ball screw is transferred to the moving side plate It is equipped with a ball nut that tells. The cooling means includes a cooling passage formed in the fixed side plate and the moving side plate, and a refrigerant flowing in the cooling passage.

  Another molding machine of the present invention includes the injection device and a mold clamping device.

Another method for controlling an injection device according to the present invention is a method for controlling an injection device including an injection unit, a drive device, and a cooling means. The injection part includes an injection barrel that contains a plasticized material, and a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving forward and backward in the injection barrel. Is provided. The drive device drives the injection unit. The driving device includes a fixed side plate to which the injection barrel is fixed, a movement in which the plunger is fixed and movable in the forward and backward direction of the plunger in the injection barrel with respect to the fixed side plate. A side plate, a ball screw shaft that is rotatably supported by the fixed side plate and passes through the moving side plate, and is screwed to the ball screw shaft, and a thrust generated by the rotation of the ball screw is transferred to the moving side plate It is equipped with a ball nut that tells. The cooling means includes a cooling passage formed in the fixed side plate and the moving side plate, and a refrigerant flowing in the cooling passage. The control method of the injection device is controlled so as to continuously flow the refrigerant through the cooling passage.

Another method for controlling an injection device according to the present invention is a method for controlling an injection device including an injection unit, a drive device, and a cooling means. The injection part includes an injection barrel that contains a plasticized material, and a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving forward and backward in the injection barrel. Is provided. The driving device is a driving device that drives the injection unit. The driving device includes a fixed side plate to which the injection barrel is fixed, a movement in which the plunger is fixed and movable in the forward and backward direction of the plunger in the injection barrel with respect to the fixed side plate. A side plate, a ball screw shaft that is rotatably supported by the fixed side plate and passes through the moving side plate, and is screwed to the ball screw shaft, and a thrust generated by the rotation of the ball screw is transferred to the moving side plate It is equipped with a ball nut that tells. The cooling means includes a cooling passage formed in the fixed side plate and the moving side plate, and a refrigerant flowing in the cooling passage. The control method controls the refrigerant to flow intermittently through the cooling passage.

Another method for controlling an injection device according to the present invention is a method for controlling an injection device including an injection unit, a drive device, and a cooling means. The injection part includes an injection barrel that contains a plasticized material, and a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving forward and backward in the injection barrel. Is provided. The driving device is a driving device that drives the injection unit. The driving device includes a fixed side plate to which the injection barrel is fixed, a movement in which the plunger is fixed and movable in the forward and backward direction of the plunger in the injection barrel with respect to the fixed side plate. A side plate, a ball screw shaft that is rotatably supported by the fixed side plate and passes through the moving side plate, and is screwed to the ball screw shaft, and a thrust generated by the rotation of the ball screw is transferred to the moving side plate It is equipped with a ball nut that tells. The cooling means includes a cooling passage formed in the fixed side plate and the moving side plate, a refrigerant flowing in the cooling passage, and a temperature detection means for detecting the temperature of the driving device. The control method controls the refrigerant to flow through the cooling passage when a detection result of the temperature detection unit is equal to or higher than a predetermined value set in advance.

  Since the present invention can suppress the influence of heat on the drive device, it is possible to suppress a decrease in the life of the drive device and a decrease in the operation accuracy of the drive device.

The side view which shows the molding machine which concerns on the 1st Embodiment of this invention. FIG. 2 is a plan view showing the drive device shown in FIG. The top view which cuts and shows the drive device with which the molding machine which concerns on the 2nd Embodiment of this invention is provided.

  A molding machine according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing the molding machine 10. As shown in FIG. 1, the molding machine 10 includes a mold clamping device 20 and an injection device 30.

  The mold clamping device 20 is provided with a mold 21 inside. A space corresponding to the product to be molded is formed in the mold 21. A product is molded by injecting a material plasticized by an injection device 30 described later into this space.

  The injection device 30 includes a control unit 1 (shown in FIG. 2), a frame 31, an injection barrel 32, an injection unit 30a including a plunger 33 accommodated in the injection barrel 32, a plasticizing device 40, A driving device 50 for moving the plunger 33 back and forth in the injection barrel 32, a tank 80 (shown in FIG. 2), a pump 100 (shown in FIG. 2), and first to fourth cooling passages 91, 92, 93, 94. (Shown in FIG. 2).

  The frame 31 is disposed on the base 5. A moving mechanism 6 is provided between the frame 31 and the base 5 to guide the movement of the injection device 30 along the direction approaching the mold clamping device 20 and the movement along the direction away from the mold clamping device 20. The frame 31 accommodates an injection barrel 32 and a driving device 50 to be described later.

  The injection barrel 32 has a cylindrical shape as an example. Inside the injection barrel 32, an accommodation space for accommodating a later-described plunger 33 is provided. A nozzle 38 is provided at the tip of the injection barrel 32. The injection barrel 32, the plunger 33, and the nozzle 38 constitute an example of an injection unit.

  When the injection device 30 approaches the mold clamping device 20 by the moving mechanism 6, the nozzle 38 communicates with the space in the mold 21. FIG. 1 shows a state in which the nozzle 38 of the injection device 30 is separated from the mold 21.

  The plunger 33 is accommodated in the injection barrel 32. The plunger 33 is advanced and retracted in the injection barrel 32 by a driving device 50 described later. As the plunger 33 moves forward in the injection barrel 32, the plasticized material stored in the injection barrel 32 is injected into the mold 21 (outside the injection device 30) through the nozzle 38. Note that moving forward in the injection barrel 32 means that the plunger 33 moves toward the nozzle 38 in the injection barrel 32. In addition, the plunger 33 is retracted when the plunger 33 moves in a direction away from the nozzle 38. The advancing direction and the retreating direction are opposite to each other and are linear directions.

  The plasticizing device 40 is disposed on the frame 31. Here, the front-rear direction L, the vertical direction V, and the width direction W of the injection device 30 will be described. The vertical direction V is parallel to a direction perpendicular to the plane when the injection device 30 is disposed on the plane. Of the directions perpendicular to the plane, the direction from the side where the injection device 30 is arranged on the plane to the plane is the downward direction, and the opposite direction is the upward direction. When the injection device 30 is arranged on a plane perpendicular to the direction in which the gravity acts, the direction in which the gravity acts is a downward direction. The front-rear direction L is parallel to the direction toward and away from the mold clamping device 20 of the injection device 30, and the direction in which the injection device 30 advances toward the mold clamping device 20 is defined as the front direction. The direction opposite to the front direction is the rear direction. The front-rear direction L is perpendicular to the up-down direction V. The width direction W is a direction perpendicular to the up-down direction V and the front-rear direction L. In the present embodiment, the advance / retreat direction of the plunger 33 is parallel to the front-rear direction L.

  Returning to the description of the configuration of the plasticizing apparatus 40. The plasticizing apparatus 40 rotates a plasticizing barrel 41, a plasticizing screw 42 accommodated in the plasticizing barrel 41, a hopper mounting base 43 serving as a supply port for the material M, and a plasticizing screw 42. A rotating device 44 and a heater 49 are provided.

  The plasticizing barrel 41 accommodates a plasticizing screw 42 inside. The plasticizing barrel 41 includes a heater 49 on the outer periphery, for example. The plasticizing screw 42 is accommodated in the plasticizing barrel 41. The plasticizing screw 42 has a rod shape that is long in one direction. By rotating the plasticizing screw 42, the material is melted by the heat of the heater 49 while being fed forward (toward the nozzle 38) and plasticized. The material M plasticized with the rotation of the plasticizing screw 42 is guided to the tip of the plasticizing barrel 41.

  The plasticizing barrel 41 is connected to the injection barrel 32. The connection structure between the plasticizing barrel 41 and the injection barrel 32 will be specifically described. A barrel holder 36 is formed at the end of the injection barrel 32 on the side where the nozzle 38 is formed. The barrel holder 36 is positioned above the injection barrel 32. In the barrel holder 36, a communication passage 37 is formed which communicates with a storage space formed in the injection barrel 32, that is, a space in which the plunger 33 is stored.

  The plasticizing barrel 41 is connected to the barrel holder 36 via a connecting cap 45. FIG. 1 shows a state in which the plasticizing barrel 41 is connected to the barrel holder 36 via the connecting cap 45. A passage 46 penetrating the connection cap 45 is formed in the connection cap 45. When the connecting cap 45 is connected to the plasticizing barrel 41, the passage 46 of the connecting cap 45 communicates with a space in the plasticizing barrel 41, that is, a space in which the plasticizing screw 42 is accommodated. When the connection cap 45 is connected to the barrel holder 36, the passage 46 of the connection cap 45 communicates with the communication passage 37 in the barrel holder 36.

  Thus, the plasticizing barrel 41 is connected to the injection barrel 32 via the connecting cap 45 and the barrel holder 36.

  The hopper mounting base 43 is fixed to the plasticizing barrel 41. The inside of the hopper mount 43 communicates with the space inside the plasticizing barrel 41. The material M is supplied into the hopper mount 43 from a hopper (not shown). The material M supplied into the hopper mount 43 is supplied into the plasticizing barrel 41.

  In this embodiment, the rotation device 44 includes a power generation device and a transmission mechanism that converts the power generated by the power generation device into rotation of the plasticizing screw 42 and transmits the rotation to the plasticizing screw 42. . In the present embodiment, the power generation device is an electric motor as an example.

  The plasticizing device 40 is supported on the frame 31 by a plurality of front support bases 48 and a plurality of rear support bases 47. The plasticizing device 40 is an example of a plasticizing unit that plasticizes a material and supplies the material to an injection unit.

  FIG. 2 is a plan view showing the drive device 50 with a part thereof cut. As shown in FIG. 2, the driving device 50 includes a fixed side plate 51 fixed to the base 5, a movable side plate 52 to which the plunger 33 is fixed and movable with respect to the fixed side plate 51, and a movable side plate. The first and second drive mechanisms 60 and 70 are provided to enable the 52 to move with respect to the fixed side plate 51. In FIG. 2, in order to show the bearing 53, the through-hole 54, and the first to fourth cooling passages 91 to 94, which will be described later, the fixed side plate 51 and the moving side plate 52 are shown cut. Yes. The driving device 50 is an example of a driving device that drives the injection unit 30a.

  The first drive mechanism 60 transmits the rotation of the first servo motor 61 provided on the fixed side plate 51, the first ball screw 62, and the first servo motor 61 to the first ball screw 62. The rotation transmission mechanism 63 is provided.

  The second drive mechanism 70 transmits the rotation of the second servo motor 71, the second ball screw 72, and the second servo motor 71 provided on the fixed side plate 51 to the second ball screw 72. The rotation transmission mechanism 73 is provided. The rotations of the first and second servo motors 61 and 71 are respectively controlled by the control unit 1.

  The first ball screw 62 includes a first ball screw shaft 64 and a first ball nut 65. The first ball nut 65 is screwed onto the first ball screw shaft 64. The second ball screw 72 includes a second ball screw shaft 74 and a second ball nut 75. The second ball nut 75 is screwed onto the second ball screw shaft 74.

  The first and second ball screw shafts 64 and 74 are arranged so as to be parallel to each other, and are parallel to the advancing and retreating direction of the plunger 33 in the injection barrel 32.

  The first and second ball screw shafts 64 and 74 are rotatably supported by bearings 53 on the fixed side plate 51, respectively. A through hole 54 through which the first and second ball screw shafts 64 and 74 are passed is formed in the moving side plate 52. The through hole 54 has a size that does not hinder the rotation of the first and second ball screw shafts 64 and 74.

  When the first and second ball screw shafts 64 and 74 are rotated synchronously by the first and second servo motors 61 and 71, the moving plate 52 is moved relative to the fixed plate 51 in accordance with the amount and direction of rotation. Move.

  A first force transmission portion 66 exists between the first ball nut 65 and the moving side plate 52. The thrust generated by the rotation of the first ball screw 61 is transmitted to the moving side plate 52 via the first force transmitting portion 66. A second force transmission unit 76 exists between the second ball nut 75 and the moving side plate 52. The thrust generated by the rotation of the second ball screw 72 is transmitted to the moving side plate 52 via the second force transmitting portion 76.

  The drive device 50 configured as described above causes the plunger 33 to move forward and backward in the injection barrel 32, and thus the plasticized material M is injected from the nozzle 38. When the injection barrel 32, the plunger 33, and the nozzle 38 form an example of an injection unit that injects the plasticized material as in this embodiment, the plunger 33 is moved forward and backward. Is to drive. In other words, moving the plunger 33 forward and backward is an example of driving the injection unit.

  The first cooling passage 91 includes a first inner passage 91 a provided in the fixed side plate 51 and a first outer passage 91 b provided outside the fixed side plate 51. As an example, the first cooling passage 91 is a single passage. The first inner passage 91 a is formed in a spiral shape so as to accommodate the plunger 33 inside the fixed side plate 51. A tank 80 and a pump 100 are provided in the middle of the first outer passage 91b. Cooling water, which is an example of a refrigerant, is stored in the tank 80. The operation of the pump 100 is controlled by the control unit 1.

  The second cooling passage 92 includes a second inner passage 92 a provided in the fixed side plate 51 and a second outer passage 92 b provided outside the fixed side plate 51. The second cooling passage 92 is, for example, a single passage. The second inner passage 92 a is formed in a spiral shape so that the bearing 53 is disposed inside the fixed side plate 51. A tank 80 and a pump 100 are provided in the middle of the second outer passage 92b.

  The third cooling passage 93 includes a third inner passage 93 a provided in the movement side plate 52 and a third outer passage 93 b provided outside the movement side plate 52. As an example, the third cooling passage 93 is a single passage. The third inner passage 93 a is formed in a spiral shape so as to accommodate the plunger 33 inside in the movement side plate 52. The third outer passage 93b is provided with a tank 80 and a pump 100 on the way.

  The fourth cooling passage 94 includes a fourth inner passage 94 a provided in the movement side plate 52 and a fourth outer passage 94 b provided outside the movement side plate 52. For example, the fourth cooling passage 94 is a single passage. The fourth inner passage 94 a is formed in a spiral shape so as to accommodate the first and second ball screw shafts 64, 74 inside the moving side plate 52. A tank 80 and a pump 100 are provided in the middle of the fourth outer passage 94b.

  In the present embodiment, one passage through which the cooling water C flows is formed from the tank 80 to the pump 100, and this passage functions as the first to fourth cooling passages 91 to 94. As another example, in the tank 80 to the pump 100, the first to fourth cooling passages 91 to 94 may be independently formed one by one.

  The control unit 1 always drives the pump 100 continuously, that is, continuously flows the cooling water C into the first to fourth cooling passages 91 to 94. The 1st-4th cooling passages 91-94, the tank 80, the pump 100, and the control part 1 are examples of the cooling means which cools a drive device.

  In the molding machine 10 configured as described above, the first to fourth cooling passages 91 to 94 can suppress the life of the driving device 50 and the deterioration of the operation accuracy. This point will be described.

  The driving device 50 includes first and second ball screws 62 and 72, and heat is generated by friction between the first and second ball screw shafts 64 and 74 and the ball nuts 65 and 75. Further, frictional heat is also generated from the bearing 53 that rotatably supports the first and second ball screw shafts 64 and 75. Further, a plasticizing device 40 is disposed above the driving device 50. The plasticizing device 40 is heated to plasticize the material M. This heat is transmitted to the driving device 50. In addition, the injection barrel 32 has a heat source such as a heater around it in order to prevent the plasticized material M from solidifying. The driving device 50 also receives heat from this heat source.

  However, the driving device 50 can be cooled by the cooling water C flowing through the first to fourth cooling passages 91 to 94. For this reason, it can suppress that the lifetime of the 1st, 2nd servomotors 61 and 71 as a power generator and the lifetime of the 1st and 2nd ball screws 62 and 72 fall. Furthermore, since it can cool, generation | occurrence | production of the deformation | transformation resulting from the heat | fever of the 1st, 2nd ball screws 62 and 72 and the bearing 53 can be suppressed, and it can suppress that the precision of operation | movement falls.

  Thus, by being able to cool the components and devices constituting the drive device 50, it is possible to suppress a decrease in the life of the drive device 50 and a decrease in the accuracy of operation of the drive device 50.

  Moreover, since the lifetime reduction of the drive apparatus 50 can be suppressed, it can suppress that the maintenance cost of the drive apparatus 50 rises.

  Further, since it is possible to suppress a decrease in the operation accuracy of the driving device 50, it becomes possible to transmit force from the driving device 50 to the injection unit 30a without waste, and it is possible to improve the accuracy of the injection speed and the injection position.

  In the present embodiment, the controller 1 always drives the pump 100 to maintain a state in which the cooling water C always flows in the first to fourth cooling passages 91 to 94. However, for example, the control unit 1 may drive the pump 100 intermittently so that the cooling water C flows intermittently in the first to fourth cooling passages 91 to 94. At this time, switching between the state in which the cooling water C flows and the state in which it does not flow may be performed at preset intervals.

  Next, a molding machine according to a second embodiment of the present invention will be described with reference to FIG. In addition, the structure which has the same function as 1st Embodiment attaches | subjects the same code | symbol as 1st Embodiment, and abbreviate | omits description. In this embodiment, the point provided with the temperature detection sensor 110 which detects the temperature of the barrel 32 for injection | emission and control of the pump 100 in the control part 1 differ from 1st Embodiment. Other points are the same as in the first embodiment. The different points will be described.

  FIG. 3 is a plan view similar to FIG. As shown in FIG. 3, the temperature detection sensor 110 is provided in the injection barrel 32 as an example. In this case, the temperature detection sensor 110 detects the temperature of the injection barrel 32. The temperature detection sensor 110 transmits the detection result to the control unit 1.

  As an example, the control unit 1 has information indicating the detection result of the temperature detection sensor 110 and the temperature relationship of the driving device 50. Based on this information, the control unit 1 can obtain temperature information of each part of the drive device 50 based on the detection result of the temperature detection sensor 110. The temperature detection sensor 110 and the control unit 1 constitute an example of a temperature detection unit that detects the temperature of the drive device 50.

  When the detection result of the temperature detection sensor 110 exceeds a predetermined value, the control unit 1 drives the pump 100 to continuously or intermittently cool in the first to fourth cooling passages 91 to 94. Pour water C. The predetermined temperature set in advance is, for example, a temperature at which the components and devices constituting the driving device 50 become unfavorable temperatures. The undesired temperature is, for example, a temperature slightly lower than a temperature at which thermal deformation is started or a temperature at which thermal deformation is started (for example, a temperature that is several or tens of degrees lower than a temperature at which thermal deformation is started). In this example, the first and second ball screws 62 and 74 are set to a temperature at which deformation starts due to heat.

  In the present embodiment, the same operation and effect as in the first embodiment can be obtained. Furthermore, the life and operation of the driving device 50 are reduced while the energy for driving the pump 100 is minimized by flowing cooling water through the first to fourth cooling passages 91 to 94 based on the temperature of the driving device 50. It is possible to suppress a decrease in accuracy.

  In the present embodiment, the control unit 1 drives the pump 100 based on the detection result of the temperature detection sensor 110. However, as described in the first embodiment, the control unit 1 intermittently drives the pump 100 at a predetermined interval that is set in advance, and the pump detects when the detection result of the temperature detection sensor 110 becomes equal to or higher than the predetermined temperature. 100 may be driven continuously or intermittently.

  In the present embodiment, as an example of the temperature detection means, the temperature detection sensor 110 detects the temperature of the injection barrel 32, and the control unit 1 estimates the temperature of the drive device 50 based on the detection result. . However, a temperature detection sensor may be used in any part of the driving device 50, and the detection result of this temperature detection sensor may be used as it is. In short, any configuration can be used as long as the temperature of the driving device 50 can be obtained.

  In the first and second embodiments, the first to fourth cooling passages 91 to 94 are used as an example of the refrigerant passage formed in the driving device 50. Among the first to fourth cooling passages 91 to 94, first to fourth inner passages 91 a to 94 a are formed in the fixed side plate 51 or the moving side plate 52. However, also in the first to fourth outer passages 91b to 94b, the drive device 50 can be cooled by flowing in the vicinity of various components and devices of the drive device 50.

  Thus, the refrigerant passage is freely formed as appropriate so as to meet the structure of the drive device. For example, the refrigerant passage is formed so as to cool a portion of the drive device where it is not preferable to have a high temperature. At this time, the refrigerant passage may be formed inside the component as in the first and second embodiments, or may be formed so as to be wound from the outside, for example. In short, it is preferable that the portion to be cooled can be effectively cooled.

  In the first and second embodiments, the injection device is a so-called preliminary plasticizing type in which the plasticizing device and the injection device have different configurations, that is, the plasticizing portion and the injection portion have different configurations. This is an injection device (prepa-type injection device). However, for example, the present invention is an injection apparatus that performs both a plasticizing function and an injection function by one barrel and a screw provided in the barrel, that is, has both a plasticizing function and an injection function in one configuration. May be used. As an example, for example, a plasticizing screw is provided in an injection barrel. By rotating the plasticizing screw, the material is plasticized in the injection barrel, and the plasticizing screw is used. It may be an injection device configured to inject this plasticized material by advancing in the direction of the rotation axis of the plasticizing screw.

  Further, the injection device of the present invention may be used in addition to injection molding as in the first and second embodiments. For example, the injection device of the present invention is used in an injection device of a die casting machine or a transfer molding machine. Also good.

  In the first and second embodiments, cooling water is used as an example of the refrigerant. Examples of the refrigerant include air and oil in addition to the cooling water. In short, the refrigerant only needs to have a function of cooling the drive device.

The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.
Hereinafter, the invention described in the scope of claims of the present application will be appended.
[1]
A plasticizing part for plasticizing the material;
An injection part for injecting the plasticized material;
A driving device for driving the injection unit;
Cooling means for cooling the drive device;
An injection apparatus comprising:
[2]
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
Cooling means for cooling the drive device;
An injection apparatus comprising:
[3]
The cooling means is
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
The injection apparatus according to [1] or [2], comprising:
[4]
The cooling means is
A controller that continuously flows the refrigerant through the refrigerant passage;
The injection apparatus according to [3], wherein
[5]
The cooling means is
A controller for intermittently flowing the refrigerant through the refrigerant passage;
The injection apparatus according to [3], wherein
[6]
The cooling means is
Temperature detecting means for detecting the temperature of the driving device;
A controller that causes the refrigerant to flow through the refrigerant passage when a detection result of the temperature detection unit is equal to or greater than a predetermined value set in advance;
With
The injection apparatus according to any one of [3] to [5].
[7]
The injection device according to any one of [1] to [6];
With mold clamping device
A molding machine comprising:
[8]
A plasticizing part for plasticizing the material;
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
A control method for an injection device comprising:
Control to continuously flow the refrigerant through the refrigerant passage
A method for controlling an injection apparatus.
[9]
A plasticizing part for plasticizing the material;
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
A control method for an injection device comprising:
Control the refrigerant to flow intermittently through the refrigerant passage.
A method for controlling an injection apparatus.
[10]
A plasticizing part for plasticizing the material;
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
Temperature detecting means for detecting the temperature of the driving device;
A control method for an injection device comprising:
When the detection result of the temperature detection means is equal to or higher than a predetermined value set in advance, control is performed so that the refrigerant flows through the refrigerant passage.
A method for controlling an injection apparatus.
[11]
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
A control method for an injection device comprising:
Control to continuously flow the refrigerant through the refrigerant passage
A method for controlling an injection apparatus.
[12]
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
A control method for an injection device comprising:
Control the refrigerant to flow intermittently through the refrigerant passage.
A method for controlling an injection apparatus.
[13]
An injection part for injecting plasticized material;
A driving device for driving the injection unit;
A refrigerant passage provided in the driving device;
A refrigerant flowing in the refrigerant passage;
Temperature detecting means for detecting the temperature of the driving device;
A control method for an injection device comprising:
When the detection result of the temperature detection means is equal to or higher than a predetermined value set in advance, control is performed so that the refrigerant flows through the refrigerant passage.
A method for controlling an injection apparatus.
[14]
Detecting means for detecting the temperature of the driving device;
When the detection result of the temperature detection means exceeds a predetermined value set in advance, control is performed so that the refrigerant flows through the refrigerant passage.
The method for controlling an injection device according to any one of [8], [9], [11], and [12].
[15]
The control is performed to cool the drive
The method for controlling an injection device according to any one of [8] to [14].

  DESCRIPTION OF SYMBOLS 1 ... Control part (control part, temperature detection means, cooling means), 10 ... Molding machine, 30 ... Injection apparatus, 30a ... Injection part, 40 ... Plasticizing apparatus (plasticizing part), 50 ... Drive apparatus, 91-94 ... 1st-4th cooling passage (refrigerant passage, cooling means), 100 ... Pump (pump, cooling means), 110 ... Temperature detection sensor (temperature detection means, cooling means), C ... Cooling water (refrigerant).

Claims (16)

A plasticizing part for plasticizing the material;
An injection barrel that contains the plasticized material , and an plunger that is contained in the injection barrel and injects the material in the injection barrel by advancing and retreating in the injection barrel. And
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
A cooling passage formed in the stationary side plate and the moving side plate, and a cooling means comprising a refrigerant flowing in the cooling passage ;
An injection apparatus comprising: An injection barrel that contains a plasticized material , and an injection unit that includes a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving back and forth in the injection barrel. When,
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
A cooling passage formed in the stationary side plate and the moving side plate, and a cooling means comprising a refrigerant flowing in the cooling passage ;
An injection apparatus comprising: The cooling passage is formed in the stationary plate and spirally formed to receive the plunger, and the cooling passage is formed in the moving plate and spirals to receive the ball screw shaft. The injection device according to claim 1, wherein the injection device is a cooling passage formed in a shape . The cooling means is
Injection device according to claim 1 or 2, characterized in that it comprises a control unit to flow to the cooling passages the refrigerant continuously. The cooling means is
Injection device according to claim 1 or 2, characterized in that it comprises a control unit to flow to the cooling passages the refrigerant intermittently. The cooling means is
Temperature detecting means for detecting the temperature of the driving device;
The controller according to any one of claims 1 to 5 , further comprising: a control unit that causes the refrigerant to flow through the cooling passage when a detection result of the temperature detection unit is equal to or greater than a predetermined value set in advance. The injection device described. The injection device according to any one of claims 1 to 6,
A molding machine comprising: a mold clamping device. A plasticizing part for plasticizing the material;
An injection barrel that contains a plasticized material , and an injection unit that includes a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving back and forth in the injection barrel. When,
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
A cooling passage formed in the stationary side plate and the moving side plate, and a cooling means comprising a refrigerant flowing in the cooling passage;
A control method for an injection device comprising:
A control method for an injection apparatus, wherein the refrigerant is controlled to flow continuously through the cooling passage. A plasticizing part for plasticizing the material;
An injection barrel that contains the plasticized material , and an plunger that is contained in the injection barrel and injects the material in the injection barrel by advancing and retreating in the injection barrel. And
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
A cooling passage formed in the stationary side plate and the moving side plate, and a cooling means comprising a refrigerant flowing in the cooling passage;
A control method for an injection device comprising:
A control method for an injection device, wherein the refrigerant is controlled to flow intermittently through the cooling passage. A plasticizing part for plasticizing the material;
An injection barrel that contains the plasticized material , and an plunger that is contained in the injection barrel and injects the material in the injection barrel by advancing and retreating in the injection barrel. And
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
Cooling means comprising cooling passages formed in the fixed side plate and the moving side plate, refrigerant flowing in the cooling passages, and temperature detecting means for detecting the temperature of the driving device;
A control method for an injection device comprising:
A control method for an injection device, wherein the refrigerant is controlled to flow through the cooling passage when a detection result of the temperature detection means is equal to or greater than a predetermined value set in advance. An injection barrel that contains a plasticized material , and an injection unit that includes a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving back and forth in the injection barrel. When,
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
A cooling passage formed in the stationary side plate and the moving side plate, and a cooling means comprising a refrigerant flowing in the cooling passage;
A control method for an injection device comprising:
A control method for an injection apparatus, wherein the refrigerant is controlled to flow continuously through the cooling passage. An injection barrel that contains a plasticized material , and an injection unit that includes a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving back and forth in the injection barrel. When,
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
A cooling passage formed in the stationary side plate and the moving side plate, and a cooling means comprising a refrigerant flowing in the cooling passage;
A control method for an injection device comprising:
A control method for an injection device, wherein the refrigerant is controlled to flow intermittently through the cooling passage. An injection barrel that contains a plasticized material , and an injection unit that includes a plunger that is contained in the injection barrel and injects the material in the injection barrel by moving back and forth in the injection barrel. When,
A driving device for driving the injection unit, the fixed side plate to which the injection barrel is fixed, the plunger is fixed, and the plunger moves forward and backward in the injection barrel with respect to the fixed side plate. A movable plate that is movable along the fixed plate, a ball screw shaft that is rotatably supported by the fixed plate, and is screwed to the ball screw shaft to rotate the ball screw. A drive device comprising a ball nut for transmitting the accompanying thrust to the moving side plate ;
Cooling means comprising cooling passages formed in the fixed side plate and the moving side plate, refrigerant flowing in the cooling passages, and temperature detecting means for detecting the temperature of the driving device;
A control method for an injection device comprising:
A control method for an injection device, wherein the refrigerant is controlled to flow through the cooling passage when a detection result of the temperature detection means is equal to or greater than a predetermined value set in advance. The cooling means includes temperature detecting means for detecting the temperature of the driving device,
The control is performed so that the refrigerant flows through the cooling passage when the detection result of the temperature detection unit exceeds a predetermined value set in advance. A method for controlling the injection device according to the item. The cooling passage is formed in the stationary plate and spirally formed to receive the plunger, and the cooling passage is formed in the moving plate and spirals to receive the ball screw shaft. It is a cooling passage formed in a shape
The method for controlling an injection apparatus according to any one of claims 8 to 14. The method for controlling an injection device according to any one of claims 8 to 15 , wherein the control is executed so as to cool the drive device.

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