JP2017136865A - Injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection molding machine capable of reducing the using amount of a coolant.SOLUTION: Provided is an injection molding machine comprising: a cylinder heating a molding material filled into a mold device; a cooling block of cooling the molding material feed port of the cylinder; and a cooling gas feed part of jetting a cooling gas of cooling the cooling block. The cooling block is formed with a cooling gas flow passage of flowing the cooling gas, the cooling block includes: a cooling block body having an insertion hole into which the cylinder is inserted; and a heat radiation part formed with the cooling gas flow passage, and, in the heat radiation part, the direction to the cooling block body is made variable,, and, when the temperature of the cylinder is reduced, a flow going from the cooling gas flow passage to the front part is formed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an injection molding machine.

  The injection molding machine includes a cylinder that heats a molding material filled in a mold apparatus, and a cooling block that cools a molding material supply port of the cylinder (for example, see Patent Document 1). A flow path for flowing a cooling liquid (for example, cooling water) is formed inside the cooling block, and the temperature of the molding material supply port of the cylinder is maintained at a temperature at which the molding material (for example, resin pellets) does not melt. Clogging of the molding material supply port can be prevented.

JP 2005-103875 A

  Conventionally, a large amount of coolant is used to flow inside the cooling block.

  This invention is made | formed in view of the said subject, Comprising: It aims at provision of the injection molding machine which can reduce the usage-amount of a cooling fluid.

In order to solve the above problems, according to one aspect of the present invention,
A cylinder for heating the molding material filled in the mold apparatus;
A cooling block for cooling the molding material supply port of the cylinder;
A cooling gas supply unit that ejects cooling gas for cooling the cooling block;
The cooling block is formed with a cooling gas passage for flowing the cooling gas,
The cooling block has a cooling block main body having an insertion hole into which the cylinder is inserted, and a heat radiating portion in which the cooling gas flow path is formed,
An injection molding machine is provided in which the direction of the heat radiating portion is variable with respect to the cooling block main body and forms a flow forward from the cooling gas flow path when the temperature of the cylinder is lowered.

  According to one aspect of the present invention, an injection molding machine that can reduce the amount of cooling water used is provided.

It is sectional drawing which shows the injection apparatus of the injection molding machine by one Embodiment of this invention. It is a side view which shows the principal part of the injection device of FIG. It is a side view which shows the modification of a windshield part. It is a longitudinal cross-sectional view of the cooling gas flow path by a 1st modification. It is a cross-sectional view of the cooling gas flow path by the 1st modification. It is a figure which shows the cooling gas flow path by a 2nd modification. It is a cross-sectional view of the cooling gas flow path by the 2nd modification. It is a figure which shows the cooling gas flow path by a 3rd modification. It is a figure which shows the cooling gas flow path by the 4th modification. It is a top view which shows the variable mechanism of the injection molding machine by another embodiment of this invention. It is a top view which shows rotation operation | movement of the thermal radiation part of FIG. It is a top view which shows the tilting operation | movement of the thermal radiation part of FIG. It is a top view which shows the linear movement operation | movement of the thermal radiation part of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In each of the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and description thereof will be omitted. Further, the screw moving direction (left direction in FIGS. 1 and 2) in the filling step will be described as the front, and the screw moving direction (right direction in FIGS. 1 and 2) in the weighing step will be described as the rear.

  FIG. 1 is a view showing an injection molding machine according to an embodiment of the present invention. FIG. 2 is a side view showing a main part of the injection apparatus of FIG.

  As shown in FIGS. 1 and 2, the injection molding machine includes an injection device 40 that fills a molding material with a molding material. The injection device 40 includes a cylinder 41, a screw 43, a cooling block 44, a cooling fan 45 as a cooling gas supply unit, a hopper 46 as a molding material supply unit, and the like.

  The cylinder 41 heats the molding material with heat supplied from heating sources H <b> 1 to H <b> 4 such as a heater provided on the outer periphery of the cylinder 41. A molding material supply port 41a is formed at the rear portion of the cylinder 41, and the molding material is supplied from the hopper 46 into the cylinder 41 through the molding material supply port 41a.

  In this embodiment, the hopper 46 is used as the molding material supply unit. However, a feed screw or the like that can control the supply speed of the molding material may be used.

  The screw 43 is disposed in the cylinder 41 so as to be rotatable and movable back and forth. In the measuring step, the screw 43 is rotated so that the molding material supplied into the cylinder 41 is fed forward along the spiral groove 43a formed in the screw 43 and gradually melted. As the molten molding material is fed to the front of the screw 43 and accumulated in the front portion of the cylinder 41, the screw 43 is retracted. When a predetermined amount of molding material is accumulated in front of the screw 43, the rotation of the screw 43 is stopped and the measuring process is completed. Thereafter, in the filling step, the screw 43 is advanced, and the molding material accumulated in front of the screw 43 is injected from the nozzle 42 provided at the front end of the cylinder 41 and filled into the mold apparatus. A heating source H5 such as a heater may be provided on the outer periphery of the nozzle 42.

  The depth of the spiral groove 43a formed in the screw 43 may be constant or may vary depending on the location.

  The cooling block 44 has an insertion hole for inserting the rear portion of the cylinder 41, and cools the molding material supply port 41 a formed at the rear portion of the cylinder 41. The temperature of the molding material supply port 41a is maintained at a temperature at which the molding material (for example, resin pellets) does not melt. Clogging of the molding material supply port 41a can be prevented.

  The cooling fan 45 ejects a cooling gas that cools the cooling block 44. The cooling gas exiting from the cooling fan 45 strikes the cooling block 44, thereby changing the flow direction of the cooling gas. The cooling gas ejected from the cooling fan 45 flows along the surface of the cooling block 44 and takes the heat of the cooling block 44. Although the kind of cooling gas is not specifically limited, For example, it may be air.

  The direction in which the cooling gas is ejected from the cooling fan 45 (the direction perpendicular to the paper surface in FIG. 2) is perpendicular to the direction of the cooling gas flowing along the surface of the cooling block 44 (the vertical direction in FIG. 2). By increasing the diameter of the outlet of the cooling fan 45, a large amount of cooling gas can be supplied from the cooling fan 45 toward the cooling block 44, and the cooling block 44 is easily cooled. Therefore, the amount of the cooling liquid used in the cooling block 44 is reduced and can be reduced to zero.

  In addition, the jet direction of the cooling gas from the cooling fan 45 of the present embodiment is perpendicular to the flow direction of the cooling gas flowing along the surface of the cooling block 44, but may not be parallel, and may be inclined. May be. Even in an oblique case, the supply amount of the cooling gas to the cooling block 44 is increased by increasing the diameter of the outlet of the cooling fan 45.

  The cooling fan 45 includes, for example, a plurality of blades 45a and a rotating shaft 45b that rotates together with the plurality of blades 45a. The cooling fan 45 sucks cooling gas from the axial direction of the rotating shaft 45b and ejects cooling gas in the axial direction of the rotating shaft 45b. You can do it. The cooling fan 45 can be thinned, and an increase in the size of the injection device 40 can be suppressed.

  The cooling fan 45 may be various, and the suction direction and the ejection direction may be different. For example, a sirocco fan may be used.

  The cooling fans 45 may be provided on both the left and right sides with the cooling block 44 interposed therebetween, for example. The cooling block 44 is cooled from both the left and right sides, and the cooling block 44 is easily cooled. The number of cooling fans 45 may be three or more, and may be attached to the left and right side surfaces and the lower surface of the cooling block, for example. Further, the number of cooling fans 45 may be one.

  The cooling block 44 may be formed with a cooling gas passage 47 through which a cooling gas flows. The cooling gas channel 47 is formed in a groove shape on the surface of the cooling block 44, for example. The wall portion forming the cooling gas flow path 47 serves as a fin. Since the cooling gas flows along the cooling gas flow path 47, the flow is stabilized.

  From one end of the cooling gas channel 47 to the other end, the groove depth and groove width of the cooling gas channel 47 may be constant, and the cross-sectional area of the cooling gas channel 47 may be constant. In the present specification, the “cross-sectional area of the cooling gas passage” means an area of a cross section perpendicular to the flow direction of the cooling gas passage.

  At the time of start-up for raising the temperature of the cylinder 41 or at the time of injection molding, a part of the cylinder 41 (a part ahead of the cooling block 44) is heated. Therefore, the flow direction of the cooling gas flowing along the cooling gas flow path 47 at the time of start-up or injection molding may be perpendicular to the axis of the cylinder 41. It is difficult to form a flow of cooling gas from the cooling block 44 toward the front (heating sources H1 to H5). Cooling of the heating sources H1 to H5 by the cooling gas can be suppressed, and heating efficiency is hardly hindered.

  Note that the flow direction of the cooling gas flowing along the cooling gas flow path 47 may be parallel to the axis of the cylinder 41 at the time of start-up or injection molding. It is only necessary to form a flow from the cooling block 44 toward the rear.

  The cooling block 44 may be provided with a wind shield 48 that blocks the flow of cooling gas from the cooling block 44 toward the front. The wind shield 48 is attached to the front surface of the cooling block 44, for example. A plurality of (for example, three) wind shields 48 protrude from the left and right side surfaces and the bottom surface of the cooling block 44 and block the flow of cooling gas from the cooling block 44 toward the heating sources H1 to H5.

  FIG. 3 is a side view showing a modification of the wind shield. As shown in FIG. 3, the cooling block 44 may be provided with a wind shield 49 that blocks the flow of the cooling gas from the cooling block 44 upward. The wind shield 49 is attached to, for example, the upper surface of the cooling block 44 and protrudes outward in the left-right direction from the left and right side surfaces of the cooling block 44. The influence of the cooling gas on the equipment such as a molding material dryer disposed above the cooling block 44 can be reduced.

  FIG. 4 is a longitudinal sectional view of the cooling gas flow path according to the first modification. FIG. 5 is a cross-sectional view of the cooling gas flow path according to the first modification.

  As shown in FIG. 5, the cooling gas channel 47A has a rectangular cross-sectional shape. As shown in FIG. 4, the groove depth of the cooling gas channel 47A is continuously increased from the upper end to the lower end of the cooling gas channel 47A. The groove width may be constant. Therefore, the cross-sectional area of the cooling gas channel 47A continuously increases from the upper end to the lower end of the cooling gas channel 47A. The larger the cross-sectional area of the cooling gas flow path 47A, the smaller the flow resistance of the cooling gas, and the cooling gas tends to face in the direction in which the cross-sectional area of the cooling gas flow path 47A increases. Therefore, in the cooling gas flow path 47A, the downward flow is dominant over the upward flow. As a result, the influence of the cooling gas on the equipment disposed above the cooling block 44 can be reduced.

  FIG. 6 is a diagram showing a cooling gas passage according to a second modification. In FIG. 6, the cooling fan 45 is not shown. FIG. 7 is a cross-sectional view of a cooling gas passage according to a second modification.

  As shown in FIG. 7, the cooling gas channel 47B has a rectangular cross-sectional shape. As shown in FIG. 6, the groove width of the cooling gas channel 47B continuously increases from the upper end to the lower end of the cooling gas channel 47B. The groove depth may be constant. Therefore, the cross-sectional area of the cooling gas channel 47B increases continuously from the upper end to the lower end of the cooling gas channel 47B. Therefore, in the cooling gas flow path 47B, the downward flow is dominant over the upward flow. Therefore, the influence of the cooling gas on the equipment disposed above the cooling block 44 can be reduced.

  In addition, the cross-sectional shape of the cooling gas channel is not limited to the rectangular shape shown in FIGS. For example, the cross-sectional shape of the cooling gas channel may be a triangle shape or a trapezoidal shape. Further, both the groove depth and the groove width may change from the upper end portion to the lower end portion of the cooling gas flow path. Furthermore, the change in the cross-sectional area of the cooling gas passage may be intermittent rather than continuous. Further, the place where the cross-sectional area of the cooling gas flow path changes may not be the entire area from one end to the other end of the cooling gas flow path, but may be at least a part of the cooling gas flow path. The cross-sectional area of the cooling gas passage may change from the central portion to the lower end portion of the cooling gas passage so that the cooling gas hitting the central portion of the cooling block from the cooling fan can easily flow downward. The cross-sectional area of the cooling gas flow path may change from the central part to the upper end part of the cooling gas flow path so that the cooling gas that hits the central part of the cooling block from the cooling fan does not easily flow upward. The direction in which the cross-sectional area of the cooling gas channel increases is not limited to the downward direction, and may be appropriately set according to the direction in which the influence of the cooling gas is reduced or increased. The cross-sectional area of the cooling gas channel does not have to continue to increase from one end to the other end of the cooling gas channel. For example, in order to increase the heat radiation area of the cooling block, the groove depth may increase or decrease from one end to the other end of the cooling gas flow path. The same applies to the cooling gas flow paths shown in FIGS.

  FIG. 8 is a diagram showing a cooling gas passage according to a third modification. In FIG. 8, illustration of the cooling fan 45 is omitted.

  The cooling gas channel 47 </ b> C shown in FIG. 8 is formed in a spiral shape on the surface of the cooling block 44. A spiral is a curve that turns away from the center while turning. A spiral flow can be formed along the cooling gas flow path 47C.

  The cross-sectional area of the cooling gas channel 47C may increase continuously or intermittently from the inner end to the outer end of the cooling gas channel 47C. The flow from inside to outside becomes dominant.

  Even when the cross-sectional area of the cooling gas channel 47C is constant, a spiral flow can be formed along the cooling gas channel 47C.

  FIG. 9 is a diagram showing a cooling gas flow path according to a fourth modification. In FIG. 9, the illustration of the cooling fan 45 is omitted.

  9 is formed radially on the surface of the cooling block 44. The cooling gas channel 47D shown in FIG. The radial shape is a shape extending in all directions around one point, and may be a shape in which straight lines extending in all directions in the center are connected as shown in FIG. 9 or may not be connected. A radial flow can be formed along the cooling gas flow path 47D.

  The cross-sectional area of the cooling gas channel 47D may increase continuously or intermittently from the inner end to the outer end of the cooling gas channel 47D. The flow from inside to outside becomes dominant.

  Even when the cross-sectional area of the cooling gas channel 47D is constant, a radial flow can be formed along the cooling gas channel 47D.

  FIG. 10 is a top view showing a variable mechanism of an injection molding machine according to another embodiment of the present invention. FIG. 10 also shows a drive device that operates the variable mechanism, and a control unit that controls the drive device, in addition to the variable mechanism. FIG. 11 is a top view showing the rotation operation of the heat dissipating section of FIG. FIG. 12 is a top view showing the tilting operation of the heat dissipating section of FIG. FIG. 13 is a top view showing the linear movement operation of the heat dissipating section of FIG. 10 to 13, the illustration of the heating source for heating the cylinder and the cooling fan 45 is omitted.

  The cooling block 44 includes a cooling block main body 44a and a heat radiating portion 44b. The cooling block main body 44 a has an insertion hole for inserting the rear portion of the cylinder 41, and cools the molding material supply port 41 a formed at the rear portion of the cylinder 41. A groove-like cooling gas passage 47 is formed on the surface of the heat radiating portion 44b. The cooling gas channel 47 is formed between the fins of the heat radiating portion 44b.

  The cooling gas passage 47 formed in the heat radiating portion 44b is formed in a straight line, and the groove depth and groove width of the cooling gas passage 47 are constant from one end portion to the other end portion of the cooling gas passage 47. . The cooling gas passages formed in the heat radiating portion 44b may be various, for example, the cooling gas passage 47A shown in FIGS. 4 and 5, the cooling gas passage 47B shown in FIGS. The cooling gas channel 47C shown in FIG. 8 or the cooling gas channel 47D shown in FIG.

  The cooling fan 45 shown in FIG. 2 is fixed to the heat radiating part 44b. The arrangement of the cooling fan 45 with respect to the heat radiating part 44b may be variable. The arrangement of the cooling fan 45 with respect to the heat radiation part 44b may be changed according to the arrangement of the heat radiation part 44b with respect to the cooling block main body 44a.

  The injection molding machine has a variable mechanism 50 that makes the arrangement of the heat radiating portion 44b relative to the cooling block main body 44a variable. “Arrangement” may include at least one of orientation and distance. By making the arrangement variable, the flow of the cooling gas can be adjusted. The variable mechanism 50 includes, for example, a rotation shaft 53, a drive shaft 55, and a hinge 57.

  The rotating shaft 53 is rotatably attached to the cooling block main body 44a. The cooling block main body 44a may hold a bearing that rotatably supports the rotary shaft 53.

  The drive shaft 55 rotates together with the rotation shaft 53. The drive shaft 55 is spline-coupled to the rotary shaft 53 and is linearly movable in the axial direction of the drive shaft 55. The rotary shaft 53 and the drive shaft 55 constitute a telescopic rod that can expand and contract.

  The hinge 57 includes a first attachment portion 57a and a second attachment portion 57b. The drive shaft 55 is fixed to the first attachment portion 57a, and the heat dissipation portion 44b is fixed to the second attachment portion 57b. The second attachment portion 57b is rotatable about the rotation shaft 57c with respect to the first attachment portion 57a.

  According to the variable mechanism 50, the heat radiating portion 44b is rotatable with respect to the cooling block main body 44a around the rotation shaft 53. Thereby, the direction of the cooling gas flow path 47 with respect to the cooling block main body 44a is variable.

  The heat dissipating part 44b is between the state in which the cooling gas channel 47 is parallel to the vertical direction (for example, the state shown in FIG. 10) and the state in which the cooling gas channel 47 is parallel to the front-rear direction (for example, the state shown in FIG. 11). It can be rotated freely. “Rotation” may be any rotation of less than one rotation and one or more rotations. The direction of rotation may or may not be reversed.

  At the time of start-up or injection molding, a part of the cylinder 41 (a part in front of the cooling block 44) is heated. In this case, the heat radiation part 44b may be in the state shown in FIG. An upward flow and a downward flow are formed along the cooling gas flow path 47. The forward flow can be suppressed and the heating efficiency of the cylinder 41 is good.

  Note that at the time of start-up and injection molding, each cooling gas flow path is arranged from the upper end to the lower end of each cooling gas flow path so that the downward flow is more dominant than the upward flow in each cooling gas flow path. The cross-sectional area may increase continuously or intermittently. The influence of the cooling gas on the equipment disposed above the cooling block 44 can be reduced.

  On the other hand, when the temperature of the cylinder 41 is lowered, in order to increase the cooling efficiency of the cylinder 41, the state of the heat radiating portion 44b may be the state shown in FIG. A forward flow and a backward flow are formed along the cooling gas flow path 47. The cylinder 41 can be efficiently cooled by the forward cooling gas.

  At the time of falling, the cross-sectional area of each cooling gas channel from the rear end to the front end of each cooling gas channel is such that the forward flow is more dominant than the backward flow in each cooling gas channel. May increase continuously or intermittently. The cylinder 41 can be cooled more efficiently.

  Further, according to the variable mechanism 50, the heat radiating portion 44 b is rotatable about the rotation shaft 57 c of the hinge 57. Thereby, the direction of the heat radiation part 44b with respect to the cooling block main body 44a is made variable.

  The heat dissipating part 44b is freely rotatable between a state parallel to the cooling block main body 44a (for example, the state shown in FIG. 11) and a state oblique to the cooling block main body 44a (for example, the state shown in FIG. 12). It is said. The heat radiating portion 44b may be perpendicular to the cooling block main body 44a.

  At the time of falling, the heat radiating portion 44b may be in the state shown in FIG. 12 instead of the state shown in FIG. In the cooling gas flow path 47, a flow is formed that approaches the cylinder 41 toward the front. Therefore, the cooling gas tends to hit the cylinder 41.

  On the other hand, at the time of start-up or injection molding, the heat radiating portion 44b may be in the state shown in FIG. 10 so that heat can be easily received from the cooling block main body 44a.

  The heat radiating portion 44b of the present embodiment is rotatable in one direction around the rotation shaft 57c from a state parallel to the cooling block main body 44a (for example, the state shown in FIG. 11). It may be freely rotatable. The heat radiation part 44b can be inclined to both sides from a state parallel to the cooling block main body 44a. In this case, the rotation shaft 57c may be disposed so as to pass through the vicinity of the center of the heat radiating portion 44b.

  Furthermore, according to the variable mechanism 50, the heat radiating portion 44b is linearly movable with respect to the cooling block main body 44a. Thereby, the distance of the thermal radiation part 44b with respect to the cooling block main body 44a is made variable.

  The heat dissipating part 44b is in a state close to the cooling block main body 44a (for example, the state shown in FIG. 12) and a state far from the cooling block main body 44a (for example, FIG. The state shown in FIG.

  At the time of falling, the heat radiating portion 44b may be in the state shown in FIG. 13 instead of the state shown in FIG. The forward cooling gas flow is not easily blocked by the peripheral members of the cooling block main body 44a. Therefore, the cylinder 41 can be cooled more efficiently.

  Moreover, the place where the cooling gas hits in the cylinder 41 can be changed by changing the distance between the cooling block main body 44a and the heat radiating portion 44b at the time of lowering. The location may continue to change or reciprocate. In addition, in order to change the said place, the direction of the thermal radiation part 44b with respect to the cooling block main body 44a may change.

  On the other hand, at the time of start-up or injection molding, the heat radiating portion 44b may be in the state shown in FIG. 10 so that heat can be easily received from the cooling block main body 44a.

  The variable mechanism 50 may be driven by a driving device such as a motor. As the drive device, for example, as shown in FIG. 10, a rotation motor 54, a drive motor 56, and a hinge drive motor 58 are used.

  When the rotary motor 54 is driven, the rotary shaft 53 is rotated. As the rotation shaft 53 rotates, the drive shaft 55 and the hinge 57 are rotated, and the direction of the rotation shaft 57c of the hinge 57 changes.

  When the drive motor 56 is driven, the rotary motion by the drive motor 56 is converted into linear motion in the ball screw mechanism, and the drive shaft 55 and the hinge 57 are linearly moved. As a result, the cooling fan 45 is linearly moved with respect to the cooling block 44.

  When the hinge drive motor 58 is driven, the second mounting portion 57b rotates with respect to the first mounting portion 57a, and the direction of the cooling fan 45 with respect to the cooling block 44 changes.

  The control unit 60 controls drive devices such as the rotation motor 54, the drive motor 56, and the hinge drive motor 58. The control unit 60 includes a storage unit such as a memory and a CPU, and controls the driving device of the variable mechanism 50 by causing the CPU to execute a program stored in the storage unit.

  The control unit 60 may monitor the temperature of the cooling block 44 with a temperature sensor and control the driving device of the variable mechanism 50 based on the monitoring result. For example, the driving device of the variable mechanism 50 may be controlled so that the temperature of the cooling block 44 becomes the set temperature.

  The control unit 60 may monitor the temperature of the cylinder 41 with a temperature sensor and control the driving device of the variable mechanism 50 based on the monitoring result. For example, the drive device of the variable mechanism 50 may be controlled so that the temperature of the cylinder 41 becomes the set temperature.

  The control unit 60 may control the drive device of the variable mechanism 50 based on the monitoring results of both the temperature of the cooling block 44 and the temperature of the cylinder 41.

  In addition, the component of the variable mechanism 50 may be various. For example, the rotation shaft 53, the drive shaft 55, and the hinge 57 may be used alone or in any two combinations. A link mechanism may be used instead of the hinge 57. Further, a hydraulic cylinder or the like may be used as a driving device for the variable mechanism 50. The variable mechanism 50 may be driven manually.

  As mentioned above, although embodiment of the injection molding machine was described, this invention is not limited to the said embodiment, In the range of the summary of this invention described in the claim, various deformation | transformation and improvement are possible. Is possible.

  For example, the injection device of the above embodiment is an inline screw system, but may be a pre-plastic system. A pre-plastic injection device supplies a molding material melted in a plasticizing cylinder to the injection cylinder, and injects the molding material from the injection cylinder into a mold device. In the screw / prepa system, a screw is disposed in the plasticizing cylinder, and in the plunger / prepa system, a plunger is disposed in the plasticizing cylinder. In the case of the pre-plastic method, the cooling block cools the plasticizing cylinder.

40 Injection Device 41 Cylinder 41a Molding Material Supply Port 43 Screw 44 Cooling Block 44a Cooling Block Body 44b Heat Dissipation Unit 45 Cooling Fan (Cooling Gas Supply Unit)
46 Hopper (molding material supply unit)
47, 47A, 47B, 47C, 47D Cooling gas passage 48 Wind shield 49 Wind shield 50 Variable mechanism 53 Rotating shaft 54 Rotating motor 55 Driving shaft 56 Driving motor 57 Hinge 58 Hinge driving motor 60 Control units H1 to H5 Heating source

Claims (2)

A cylinder for heating the molding material filled in the mold apparatus;
A cooling block for cooling the molding material supply port of the cylinder;
A cooling gas supply unit that ejects cooling gas for cooling the cooling block;
The cooling block is formed with a cooling gas passage for flowing the cooling gas,
The cooling block has a cooling block main body having an insertion hole into which the cylinder is inserted, and a heat radiating portion in which the cooling gas flow path is formed,
The heat radiating unit is an injection molding machine in which a direction with respect to the cooling block main body is variable, and a flow directed forward from the cooling gas flow path is formed when the temperature of the cylinder is lowered.   The injection molding machine according to claim 1, wherein a distance of the heat radiating portion with respect to the cooling block main body is variable.

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