CN104440476A

CN104440476A - Sander

Info

Publication number: CN104440476A
Application number: CN201310416502.8A
Authority: CN
Inventors: 王伟; 黄显威; 余鸿东; 韩苏梅
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2013-09-13
Filing date: 2013-09-13
Publication date: 2015-03-25
Anticipated expiration: 2033-09-13
Also published as: CN104440476B

Abstract

The invention discloses a sander. The sander comprises a shell, a driving element arranged in the shell, an eccentric device matched and connected with the driving element, and a baseplate assembly matched and connected with the eccentric device, wherein the baseplate assembly comprises a baseplate and a baseplate pad; in addition, the sander further comprises a rotation preventing device arranged on the baseplate assembly; and the rotation preventing device can slow down the deflection and the rotation of the whole sander in opening.

Description

Sander

Technical field

The present invention relates to a kind of sander, particularly relate to a kind of sander comprising anti-rotation device.

Background technology

At present, sander is widely used in the polishing sanding of metope, ground or various workpiece.Sander has the motor providing driving force usually, and motor is connected to dynamic transfer system and is positioned within the housing of sander.Sander also has work chassis, and dynamic transfer system also comprises eccentric, and motor is connected with work chassis by dynamic transfer system, and the bottom surface on work chassis is pasted with the abrasive material such as sand paper.During work, motor drives chassis to make axial rotation around an axle, and the sand paper of attaching will correspondingly rotate, and polishes to the surface of the work that will polish, thus makes it smooth.

But due to the existence of sanding machine structure eccentric, often there is the problem that sander complete machine beat rotates in sander when starting up.Especially when the bottom surface on the chassis that works also does not attach the abrasive material such as sand paper, work top or the workpiece of the base pad included by sander work chassis and sander directly contact, base pad is generally expanded material, and between the work top of sander or workpiece, there is larger rubbing action, once sander is accidentally, the problem that sander complete machine beat rotates is more outstanding, time serious, may cause security incident because the beat of sander rotates.

In view of this, be necessary to develop a kind of new sander, rubbing action between the work top of sander work chassis and sander or workpiece can be weakened, thus slow down the complete machine beat rotational problems of sander when starting shooting.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of sander, can slow down the complete machine beat rotational problems of sander when starting shooting.

Technical scheme of the present invention is achieved in that a kind of sander, comprise housing, the driving element be arranged in described housing, the eccentric connected with described driving element and the bottom deck assembly connected with described eccentric, described bottom deck assembly comprises base plate and base pad; In addition, described sander also comprises the anti-rotation device be arranged on described bottom deck assembly, and described anti-rotation device can slow down the complete machine beat of described sander when starting shooting and rotate.

Preferably, described anti-rotation device is matte material layer, and described matte material layer is arranged at the bottom of described base pad.

Preferably, described matte material layer is identical with the shape size of described base pad.

Preferably, described matte material layer and described base pad by adhesive bond to together with or one-body molded by foam process.

Preferably, the thickness of described base pad is 5 ~ 7mm, and the thickness of described matte material layer is 1mm.

Preferably, described anti-rotation device is pad, and described pad is arranged between described base plate and described base pad; The size of described pad is less than the size of described base pad.

Preferably, the thickness of described pad is 0.2 ~ 0.4mm; The material of described pad is polyvinyl chloride.

Preferably, symmetric figure centered by the shape of described pad; The symmetrical centre of described pad and the center of described base plate, and being centrally located on same longitudinal axis of described base pad.

Preferably, the shape of described pad is square or circular.

Preferably, described base plate is provided with the groove towards base pad, and described anti-rotation device is elastomer, and described elastomer is arranged in described groove.

Compared with prior art, sander provided by the present invention, by arranging anti-rotation device in bottom deck assembly, effectively can slowing down the complete machine beat rotational problems of described sander when starting shooting, improving the security of sander.When anti-rotation device is matte material layer, reduce the coefficient of friction between sander and work top or workpiece, thus slow down the complete machine beat rotational problems of described sander when starting shooting; Anti-rotation device is the pad be arranged between base plate and base pad, or anti-rotation device be groove and elastomer time, all can reduce the friction area between sander and work top or workpiece, thus slow down the complete machine beat rotational problems of described sander when starting shooting.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described.

Fig. 1 is the structure chart of sander in the first embodiment;

Fig. 2 is the structure chart of sander in the second embodiment;

Fig. 3 is structure chart when sander is unloaded in the third embodiment;

Structure chart when Fig. 4 is sander load in the third embodiment.

Wherein:

1, housing 2, driving element 3, eccentric

4, bottom deck assembly 41, base plate 42, base pad

5, matte material layer 6, pad 7, elastomer

Detailed description of the invention

The present invention comes out with a kind of sander, is illustrated by following embodiment.

With reference to shown in Fig. 1, in the first embodiment, sander comprises housing 1, the driving element 2 be arranged in housing 1, the eccentric 3 connected with driving element 2 and the bottom deck assembly 4 connected with eccentric, wherein, driving element 2 can be power-actuated motor, also can be the air pressure rotor that air pressure drives, bottom deck assembly 4 comprises base plate 41 and base pad 42, and base pad 42 is expanded material.

Be provided with anti-rotation device in bottom deck assembly 4, anti-rotation device is matte material layer 5, and matte material layer 5 is arranged at the bottom of base pad 42.Concrete, matte material layer can be one deck that the various matte materials such as velveteen are formed.In preferred scheme, the thickness of base pad 42 is 5 ~ 7mm, and the thickness of matte material layer 5 is about 1mm, and in preferred scheme, matte material layer 5 and base pad 42 are of similar shape size.In preferred scheme, between matte material layer 5 with base pad 42 by adhesive bond to together with, or matte material layer 5 and base pad 42 directly to pass through foam process one-body molded.

Matte material layer 5 can reduce the coefficient of friction between bottom deck assembly 4 and work top or workpiece, thus slows down the complete machine beat rotational problems of sander when starting shooting.Similar with matte material layer 5 principle, anti-rotation device also can be the various material layers that other can reduce coefficient of friction between base plate group 4 and work top or workpiece.

During sander work, driving element 2 drives bottom deck assembly 4 to do regular concussion motion by eccentric 3, the abrasive material such as sand paper are pasted or are socketed on the bottom of bottom deck assembly 4, along with bottom deck assembly 4 does regular concussion motion, thus realize the polishing to workpiece.

With reference to shown in Fig. 2, in the second embodiment, sander comprises housing 1, the driving element 2 be arranged in housing 1, the eccentric 3 connected with driving element 2 and the bottom deck assembly 4 connected with eccentric 3, wherein, driving element 2 can be power-actuated motor, also can be the air pressure rotor that air pressure drives, bottom deck assembly 4 comprises base plate 41 and base pad 42.

Be provided with anti-rotation device in bottom deck assembly 4, anti-rotation device is pad 6, and pad 6 is arranged at the center between base plate 41 and base pad 42; The size of pad 6 is less than the size of base pad 42.In preferred scheme, symmetric figure centered by the shape of pad 6, the symmetrical centre of pad 6 and the center of base plate 41, and being centrally located on same longitudinal axis of base pad 42.More have in the scheme of choosing, the shape of pad 6 is square, circular.In preferred scheme, the material of pad 6 is polyvinyl chloride, and the thickness of pad 6 is 0.2 ~ 0.4mm.

The existence of pad 6 can reduce the friction area between bottom deck assembly 4 and work top or workpiece, thus slows down the complete machine beat rotational problems of sander when starting shooting.

With reference to shown in Fig. 3 and Fig. 4, in the third embodiment, sander comprises housing 1, the driving element 2 be arranged in housing 1, the eccentric 3 connected with driving element and the bottom deck assembly 4 connected with eccentric, wherein, driving element 2 can be power-actuated motor, also can be the air pressure rotor that air pressure drives, bottom deck assembly 4 comprises base plate 41 and base pad 42.

Be provided with anti-rotation device in bottom deck assembly 4, anti-rotation device comprises groove (not shown) and elastomer 7, and groove is arranged on base plate 41 and towards base pad 42, elastomer 7 is arranged in groove.In preferred scheme, groove is centrosymmetric around the center of base plate 41.

In this embodiment, when sander is unloaded, with reference to shown in Fig. 3, elastomer 7 is in free state, base pad 42 can eject by elastomer 7, thus make the mid portion of base pad 42 protruding, reduce the friction area between bottom deck assembly 4 and work top or workpiece, thus slow down the complete machine beat rotational problems of sander when starting shooting.And during sander load, with reference to shown in Fig. 4, elastomer 7 is in compressive state, and base pad 42 is also driven plain, the quality of sander polishing can not be affected.

Although inventor has done more detailed elaboration to technical scheme of the present invention and has enumerated, be to be understood that, to those skilled in the art, above-mentioned embodiment to be modified and/or flexible or adopt equivalent replacement scheme to be obvious, all can not depart from the essence of spirit of the present invention, the term occurred in the present invention, for the elaboration of technical solution of the present invention and understanding, can not be construed as limiting the invention.

Claims

1. a sander, comprises housing, the driving element be arranged in described housing, the eccentric connected with described driving element and the bottom deck assembly connected with described eccentric, and described bottom deck assembly comprises base plate and base pad; It is characterized in that: described sander also comprises the anti-rotation device be arranged on described bottom deck assembly, described anti-rotation device can slow down the rotation of described sander when starting shooting.

2. sander as claimed in claim 1, is characterized in that: described anti-rotation device is matte material layer, and described matte material layer is arranged at the bottom of described base pad.

3. sander as claimed in claim 2, is characterized in that: described matte material layer is identical with the shape size of described base pad.

4. sander as claimed in claim 2, is characterized in that: described matte material layer and described base pad by adhesive bond to together with or to pass through foam process one-body molded.

5. sander as claimed in claim 2, it is characterized in that: the thickness of described base pad is 5 ~ 7mm, the thickness of described matte material layer is 1mm.

6. sander as claimed in claim 1, it is characterized in that: described anti-rotation device is pad, described pad is arranged between described base plate and described base pad; The size of described pad is less than the size of described base pad.

7. sander as claimed in claim 6, is characterized in that: the thickness of described pad is 0.2 ~ 0.4mm; The material of described pad is polyvinyl chloride.

8. sander as claimed in claim 6, is characterized in that: symmetric figure centered by the shape of described pad; The symmetrical centre of described pad and the center of described base plate, being centrally located on same longitudinal axis of described base pad.

9. sander as claimed in claim 8, is characterized in that: the shape of described pad is square or circular.

10. sander as claimed in claim 1, it is characterized in that: described base plate is provided with the groove towards base pad, described anti-rotation device is elastomer, and described elastomer is arranged in described groove.