JPH01149256U

JPH01149256U -

Info

Publication number: JPH01149256U
Application number: JP4588388U
Authority: JP
Priority date: 1988-04-04
Filing date: 1988-04-04
Publication date: 1989-10-16

Description

[Brief explanation of the drawing]

第１図は本考案に係るベルトサンダーのベルト
調整装置の実施例を示す主要部の横断平面図、第
２図は同主要部の縦断側面図、第３図は他の実施
例を示す主要部の横断平面図、第４図は従来のベ
ルトサンダー及びそのベルト調整装置を一部切欠
して示す平面図、第５図は第４図における側面図
、第６図は第４図における―線矢視拡大断面
図、第７図は第６図における―線矢視断面図
である。１……フレーム、２……挿通溝、３……テンシ
ヨンローラ、４……支持アーム、４ａ……一側端
面、５……研磨ベルト、６……バネ、７……レバ
ー、８……ネジ孔、９……調整ネジ、９ａ……先
端、１１……駆動ローラ。 Fig. 1 is a cross-sectional plan view of the main part showing an embodiment of the belt adjusting device for a belt sander according to the present invention, Fig. 2 is a longitudinal cross-sectional side view of the main part, and Fig. 3 is a main part showing another embodiment. FIG. 4 is a partially cutaway plan view of a conventional belt sander and its belt adjustment device, FIG. 5 is a side view of FIG. 4, and FIG. 6 is a cross-sectional view of FIG. The enlarged sectional view, FIG. 7, is a sectional view taken along the line -- in FIG. 6. DESCRIPTION OF SYMBOLS 1... Frame, 2... Insertion groove, 3... Tension roller, 4... Support arm, 4a... One end surface, 5... Polishing belt, 6... Spring, 7... Lever, 8... Screw hole, 9... Adjustment screw, 9a... Tip, 11... Drive roller.

Claims

[Scope of utility model registration request]

A tension roller 3 is provided with a drive roller 11 around which an endless polishing belt 5 is wound, and a tension roller 3 that is orthogonally supported on the front end of a support arm 4 that is supported in the insertion groove 2 of the frame 1 so as to be slidable back and forth and left and right. A spring 6 is interposed to bias the tension roller in the direction of tensioning the polishing belt, and a lever 7 is pivotally attached to the support arm so that the support arm can move backward against the spring force. In a belt adjustment device for a belt sander, in which an adjustment screw 9 for adjusting the left and right movement of the support arm is screwed into a screw hole 8 bored in the frame so as to communicate with one side so as to be able to move forward and backward, the tip 9a of the adjustment screw and One side end surface 4a of the support arm is aligned with approximately the center line b of the adjustment screw.
A belt adjustment device for a belt sander characterized by point contact at the top.