Grinding device of parting line of resin molding and grinding method

A resin forming and grinding device technology, which is applied in the direction of grinding machines, abrasive belt grinding machines, grinding/polishing equipment, etc., can solve the problems of parting line grinding and achieve the effect of rapid grinding

Active Publication Date: 2014-11-26
KAKIHARA KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is ground without tilting, there is a problem that parts other than the parting line 52 are ground unnecessarily

Method used

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  • Grinding device of parting line of resin molding and grinding method
  • Grinding device of parting line of resin molding and grinding method
  • Grinding device of parting line of resin molding and grinding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0068] figure 1 It is a schematic perspective view showing the parting line grinding apparatus of the resin molded product of Example 1. figure 2 It is a schematic plan view showing the parting line grinding apparatus of the resin molded product of Example 1. image 3 It is a schematic side view showing the parting line grinding device of the resin molded product of Example 1.

[0069] The parting line grinding apparatus of the present invention in Example 1 is provided with an endless belt-shaped grinding belt 1 running in a substantially vertical direction for grinding the parting line 52 of the resin molded product W, and the grinding belt 1 adjacent to the grinding belt 1 . The grinding plate 2 for finish grinding the parting line 52 of the resin molded product W. The resin molded product W is loaded using the workpiece holder 3 so that the parting line...

Embodiment 2

[0100] Figure 8 It is an enlarged side view showing the belt pushing pulley of Example 2, Figure 8 (a) is the state where the parting line at the upper corner is ground, Figure 8 (b) is a state where the parting line at the lower corner is polished.

[0101] The belt pushing pulley 21 of Example 2 is a structure of a seesaw method instead of the structure in which the above-mentioned two pushing pulleys 22 advance and retreat. The belt pushing pulley 21 is constituted by attaching two pushing pulleys 22 that can advance and retreat toward the back of the grinding belt 1 at both ends, and the middle position 32 of the connecting member 31 can be changed by rotating the middle position 32 of the connecting member 31 in a seesaw shape with an adjustment handle 33 . The inclination angle of the inclined surface of the grinding belt 1.

[0102] The parting line 52 formed on the upper corner of the resin molded product W is as follows: Figure 8 The resin molded product W is ...

Embodiment 3

[0106] Figure 9 It is a transverse cross-sectional view showing a rotary plate in Example 3 provided with injection holes for removing grinding debris on the grinding plate.

[0107] In Example 3, the spray hole 41 for removing the grinding slag adhering to the grinding plate 2 is opened in the rotary plate 10 . If the polishing plate 2 is used for a long period of time, the grinding grains on the grinding surface of the resin molded product W will be clogged, resulting in a decrease in polishing performance. Therefore, a plurality of injection holes 41 are opened in the rotating plate 10 holding the grinding plate 2 in the axial direction of the rotating shaft 9 . By injecting compressed air from the injection holes 41 , it is possible to remove grinding debris adhering to the grinding plate 2 in a state where the grinding plate 2 is attached to the rotary plate 10 . In the illustrated example, the structure in which the air is supplied to the injection hole 41 is shown by...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To perform polishing treatment on any resin molding having various part line shapes and also to polish them quickly.SOLUTION: An apparatus for polishing a part line of a resin molding comprises: a polishing belt 1 which has an endless belt-shape and polishes flashes or difference-in-level in the part line 52 of a resin molding W and which is arranged rotatably in a nearly vertical direction; a belt pressing pulley 21 which is provided on the rear face of the polishing belt 1 and is freely movable for the purpose of variably forming an inclined angle of a slope of the polishing belt 1 by pressing a part of the polishing belt 1 from the rear face; a planar polishing plate 2 which, for final polishing, has finer file teeth than the polishing belt 1, and has the teeth-hardness softer than the polishing belt 1; and a workpiece holder 3 which freely attachably / detachably carries the resin molding W in a manner making the part line 52 roughly horizontal.

Description

technical field [0001] The present invention relates to a polishing technique for grinding the parting line, that is, the burr, of a resin molded product before resin plating treatment, and particularly relates to the grinding technique for the parting line formed around a resin molded product having concave and convex parts, corner parts or curved parts. Parting line grinding apparatus and grinding method for ground resin molded products. Background technique [0002] For resin molded products subjected to resin plating, cracks (cracks) are likely to occur when resin plating is applied to them, so the parting line on the outer periphery formed during resin molding is polished. In addition, for resin molded products that are directly touched by human hands, the parting line must be ground. For example, if Figure 11 As shown, for a resin molded product W such as a handle 51 made of synthetic resin, the parting line 52 formed at the joint portion during mold molding is groun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B21/16B24B21/18
Inventor 柿原邦博野田义则王路贵史东山匡史
Owner KAKIHARA KOGYO CO LTD
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