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Resin filling method

A filling method and resin technology, applied in electromechanical devices, household appliances, electrical components, etc., can solve problems such as iron core damage, and achieve the effect of preventing damage

Active Publication Date: 2019-10-01
AISIN AW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the resin remaining in the runner of the third lifting plate may be disconnected from the resin filled in the gap of the iron core while the iron core is floating from the lower mold.
In this case, there is concern that when the floating iron core falls, the iron core will be injured.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In the resin filling method of this example, such as figure 1 As shown, a magnet 82 is disposed in a disposition hole 81 provided along the direction L of the central axis of the laminated iron core 8 of the rotor for a rotating electric machine, and a filling gap 83 formed between the inner wall surface of the disposition hole 81 and the magnet 82 is filled with resin. 7. In addition, in the resin filling method, a resin filling device 1 including an upper mold 2 , a pressurizing unit 3 , a runner plate 4 , and a lower mold 5 is used. The upper die 2 is provided with a first runner 21 through which the molten resin 7 is introduced from the pressurizing unit 3 . The pressurizing unit 3 is connected to the upper part of the upper mold 2 , and introduces the pressurized molten resin 7 into the first runner 21 . The runner plate 4 is located below the upper mold 2 and can be raised and lowered relative to the upper mold 2 . In addition, the runner plate 4 of the present...

Embodiment 2

[0067] In the resin filling method of this example, instead of filling the entire filling gaps 83 of the plurality of arrangement holes 81 of the laminated core 8 with the resin 7 at the same time, the predetermined number of filling gaps 83 of the plurality of arrangement holes 81 is filled. Resin 7 is filled sequentially.

[0068] Such as Figure 5 As shown, the second runner 41 of the runner plate 4 of this example is used to guide the resin in a molten state to the filling gaps 83 formed in a predetermined number of the arrangement holes 81 of the plurality of arrangement holes 81 of the laminated core 8 . 7. The resin filling device 1 used in the resin filling method of this example has a relative rotation mechanism 6 that fits the circumferential direction around the central axis of the laminated core 8 formed with a plurality of arrangement holes 81 in the laminated core 8 . The specified interval, so that the lower mold 5 rotates according to the specified angle.

...

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PUM

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Abstract

The present invention provides a resin filling method capable of taking out residual resin while preventing a laminated core from floating and preventing the laminated core from being damaged. In the filling process, with the laminated iron core (8) sandwiched between the runner plate (4) and the lower mold (5) overlapping the upper mold (2), the pressurizing unit (3) pressurizes the The resin (7) in the molten state passes through the first runner (21) of the upper mold (2) and the second runner (41) of the runner plate (4) to the gap (83) for filling the laminated iron core (8) filling. In the resin extraction process, the upper mold (2) and the pressurizing unit (3) are raised, and the runner plate (4) hanging from the upper mold (2) is placed on the laminated iron core (8) , take out the residual resin (71) remaining in the second flow channel (41) of the flow channel plate (4).

Description

technical field [0001] The present invention relates to a resin filling method for filling a filling gap formed with a magnet in an arrangement hole of a laminated iron core of a rotor for a rotating electric machine with a resin. Background technique [0002] As a technique for manufacturing a rotor for a rotating electric machine, there is known a method in which a laminated iron core in which a plurality of electromagnetic steel sheets are laminated is provided with a placement hole, a magnet is placed in the placement hole, and a thermosetting resin is filled into the formed gap. technology. For example, Patent Document 1 discloses a resin sealing device using an injection molding method. In Patent Document 1, an iron core is sandwiched between a lower die unit and an upper die unit, and molten resin is filled into a gap between an accommodating space of the iron core and a magnet. In addition, in the upper mold unit, a third lifting plate is attached in a state of bei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/14B29C45/27B29L31/08
CPCB29C45/27B29K2995/0008B29L2031/749B29C45/14065B29C45/38B29C2045/14122H02K15/03B29C45/14467B29C45/0046B29C45/0441B29C45/2669B29C45/40B29K2101/12B29L2031/7498
Inventor 郡智基
Owner AISIN AW CO LTD