Injection molding machine and injection molding method

An injection molding machine and molding material technology, applied in the direction of coating, can solve the problems of poor heating efficiency of molding materials, and achieve the effect of good heating efficiency

Active Publication Date: 2014-05-21
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is a cylinder between the belt heater as a heat source and the

Method used

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  • Injection molding machine and injection molding method
  • Injection molding machine and injection molding method
  • Injection molding machine and injection molding method

Examples

Experimental program
Comparison scheme
Effect test

Example

[0030] [First Embodiment]

[0031] figure 1 It is a figure which shows the injection molding machine of the 1st Embodiment of this invention. in figure 1 Middle, omitted figure 2 An illustration of the nozzle block 21 shown. figure 2 It is a cross-sectional view of the cylinder in the injection molding machine of the first embodiment of the present invention, and is a cross-sectional view perpendicular to the axial direction of the cylinder. in figure 2 For convenience of explanation, omitted figure 1 An illustration of the spiral fin 16 shown. image 3 It is a figure which shows the supply port of the heat medium formed in the cylinder inner wall in the injection molding machine of the 1st Embodiment of this invention.

[0032] The injection molding machine 10 includes a cylinder 11 into which a molding material (e.g., resin pellets) is supplied, an injection nozzle 12 provided at the front end of the cylinder 11, a screw 13 that is arranged in the cylinder 11 to be rotatable a...

Example

[0065] [Second Embodiment]

[0066] In the first embodiment described above, the high-temperature heat medium discharged from the cylinder 11 is recovered in the recovery tank 45 and cooled in the recovery tank 45.

[0067] On the other hand, in this embodiment, in order to improve the thermal efficiency, a recirculation part for returning at least a part of the heat medium discharged from the cylinder 11 to the heater that heats the heat medium is provided, which is different from the first embodiment. In the following, the differences are mainly explained.

[0068] Figure 4 It is a figure which shows the injection molding machine of 2nd Embodiment of this invention. Such as Figure 4 As shown, the injection molding machine 110 may include an ejector 50 for returning at least a part of the heat medium discharged from the cylinder 11 to the superheated steam generator 42 as a heater. The ejector 50 corresponds to the circulation part. The ejector 50 can return at least a part of ...

Example

[0076] [Third Embodiment]

[0077] In the first embodiment described above, the high-temperature heat medium discharged from the cylinder 11 is recovered in the recovery tank 45 and cooled in the recovery tank 45.

[0078] In the present embodiment, in order to improve the thermal efficiency, a heat exchange part that heats the heat medium supplied into the cylinder 11 by the heat medium discharged from the cylinder 11 is provided, which is different from the first embodiment in this point. In the following, the differences are mainly explained.

[0079] Figure 5 It is a figure which shows the injection molding machine of the 3rd Embodiment of this invention. Such as Figure 5 As shown, the injection molding machine 210 may include a heat exchange unit 60 that heats the heat medium supplied into the cylinder 11 by the heat medium discharged from the cylinder 11. Since the heat of the heat medium discharged from the cylinder 11 contributes to the heating of the resin, the heat effi...

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Abstract

The invention provides an injection molding machine of good heating efficiency on molding materials. The injection molding machine includes a cylinder (11) into which a molding material is supplied. The cylinder (11) includes a supply part (31) that supplies a heating medium into the cylinder to heat the molding material.

Description

technical field [0001] The invention relates to an injection molding machine and an injection molding method. Background technique [0002] The injection molding machine includes a cylinder in which a molding material (for example, resin pellets) is supplied, a screw arranged in the cylinder to be rotatable and capable of advancing and retreating, and a belt heater surrounding the outer periphery of the cylinder (for example, refer to Patent Document 1). . The resin supplied into the helical groove formed on the screw is conveyed forward as the screw rotates, and is gradually melted by heat from the cylinder or the like. As the molten resin is transported to the front of the screw and accumulated in the front of the cylinder, the screw retreats. Thereafter, when the screw is advanced, the molten resin accumulated in front of the screw is injected from an injection nozzle provided at the front end of the cylinder to fill the cavity space of the mold device. A molded articl...

Claims

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Application Information

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IPC IPC(8): B29C45/74B29C45/48B29C45/00
CPCB29C35/049B29C45/1816B29C45/62B29C45/74B29C2045/626
Inventor 荒川庆彦
Owner SUMITOMO HEAVY IND LTD
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