CN201998023U

CN201998023U - Double-eccentric sanding mechanism of sander

Info

Publication number: CN201998023U
Application number: CN201120028842XU
Authority: CN
Inventors: 张惠国
Original assignee: HELI ELECTRICAL APPLIANCES CO Ltd CHANGZHOU CITY
Current assignee: HELI ELECTRICAL APPLIANCES CO Ltd CHANGZHOU CITY
Priority date: 2011-01-28
Filing date: 2011-01-28
Publication date: 2011-10-05
Anticipated expiration: 2021-01-28

Abstract

A double-eccentric sanding mechanism of a sander comprises a motor (1), fan blades (2), flanges (5) and a working base plate (10), wherein a ground piece is arranged on the bottom surface of the working base plate (10); the fan blades (2) are sleeved on a main shaft of the motor (1); and the flanges (5) are fixedly connected with the working base plate (10). The sanding mechanism also comprises eccentric blocks (3) and bearings (6), wherein the eccentric blocks (3) are sleeved on the fan blades (2); rotary link stoppers (2-1) for stopping the eccentric blocks (3) are arranged at the matching parts of the fan blades (2) and the eccentric blocks (3); the flanges (5) are in interference fit with the outer rings of the bearings (6); the inner rings of the bearings (6) are sleeved on the eccentric blocks (3) and are fixedly connected with the eccentric blocks (3); and eccentric columns (2-2) are arranged on the fan blades (2) and are provided with shaft holes matched with the main shaft of the motor (1). In the utility model, the swing amplitude of the working base plate can be adjusted according to the requirement; therefore, the sanding efficiency of the sander is greatly improved.

Description

The two eccentric mechanism of sanding machine of sander

Technical field

The utility model relates to the sander field, specifically, relates to a kind of two eccentric mechanism of sanding machine of sander.

Background technology

The working plate that has sand paper by the driven by motor working face during sander at present commonly used rotates, and workpiece is carried out sanding handle, and the shortcoming of this structure is that working plate cannot be regulated its amplitude of fluctuation, and its impulse stroke is little, at the bottom of the operating efficiency.Chinese patent CN201151080Y discloses a kind of sander, by excentric sleeve is set on motor shaft, makes working plate can also swing in rotary course.But the amplitude of this structure swing is unadjustable, and operating efficiency improves limited.

Summary of the invention

The purpose of this utility model provides the two eccentric mechanism of sanding machine of the sander that a kind of working plate amplitude of fluctuation can be regulated, sanding efficient is high.

The technical scheme that realizes above-mentioned purpose is: a kind of two eccentric mechanism of sanding machine of sander, comprise that motor, fan blade, flange and bottom surface have the working plate of frosted part, fan blade is sleeved on the main shaft of motor, flange is fixedlyed connected with working plate, also comprise eccentric block and bearing, eccentric block is sleeved on the fan blade, and the cooperation place of fan blade and eccentric block is provided with the block that stops the eccentric block rotation, the outer ring interference fit of flange and bearing, the inner ring of bearing are enclosed within on the eccentric block and with eccentric block fixedlys connected; Have biasing post on the fan blade, have the axis hole that cooperates with the main shaft of motor on this biasing post.

Be fixed with plain washer by screw on the end face of electric machine main shaft, plain washer props up the lower surface of fan blade, and the external diameter of plain washer is greater than the external diameter of fan blade lower surface.

Be provided with the Boping pad between the upper end of bearing and the flange, the junction of bearing lower end and eccentric block is provided with split washer.

After adopting technique scheme, the biasing post that cooperates with electric machine main shaft on the fan blade has off-centre, add the eccentric block that overlaps on the fan blade biasing post, formed an adjustable double eccentric structure, when motor just changes, it is maximum that the offset of eccentric block reaches, during the motor counter-rotating, it is minimum that the off-centre of eccentric block reaches, just secondary off-centre, the amplitude of fluctuation that can regulate working plate by this eccentric structure, thereby the sanding effect that can regulate sander as required.

Description of drawings

Fig. 1 is a sectional structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of fan blade of the present utility model;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the front view of eccentric block of the present utility model;

Fig. 5 is the left view of Fig. 4;

Fig. 6 is the rearview of Fig. 4;

Fig. 7 is the fiting relation figure of eccentric block of the present utility model and fan blade;

Fig. 8 rotates to the state diagram of another location for eccentric block among Fig. 7.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Shown in Fig. 1 ~ 8, a kind of two eccentric mechanism of sanding machine of sander, comprise that motor 1, fan blade 2, flange 5 and bottom surface have the working plate 10 of frosted part, fan blade 2 is sleeved on the main shaft of motor 1, flange 5 is fixedlyed connected with working plate 10, also comprise eccentric block 3 and bearing 6, eccentric block 3 is sleeved on the fan blade 2, and fan blade 2 is provided with the block 2-1 that stops eccentric block 3 rotations with the cooperation place of eccentric block 3, the outer ring interference fit of flange 5 and bearing 6, the inner ring of bearing 6 is enclosed within on the eccentric block 3 and with eccentric block 3 fixedlys connected; Have biasing post 2-2 on the fan blade 2, have the axis hole that cooperates with the main shaft of motor 1 on this biasing post 2-2.

As shown in Figure 1, be fixed with plain washer 8 by screw 9 on the end face of motor 1 main shaft, plain washer 8 props up the lower surface of fan blade 2, and the external diameter of plain washer 8 is greater than the external diameter of fan blade 2 lower surfaces.By being set, the eccentric block 3 that plain washer 8 can prevent to be enclosed within on the fan blade 2 comes off.

As shown in Figure 1, be provided with Boping pad 4 between the upper end of bearing 6 and the flange 5, the junction of bearing 6 lower ends and eccentric block 3 is provided with split washer 7.

Operation principle of the present utility model is as follows: motor 1 rotates, the fan blade 2 that drive is enclosed within on motor 2 main shafts rotates, fan blade 2 drives the eccentric block 3 that is enclosed within fan blade 2 and rotates, and pass through bearing 6 drive flanges 5 by eccentric block 3 and rotate, flange 5 drives fixedly connected with it working plate 10 and rotates, the excircle eccentricity axle of the axis hole by fan blade 2 and the effect of eccentric block 3, make working plate 10 work the time can regulate amplitude of fluctuation, thereby regulate the sanding effect of sander as required.

Claims

1. the two eccentric mechanism of sanding machine of a sander, comprise motor (1), fan blade (2), flange (5) and bottom surface have the working plate (10) of frosted part, fan blade (2) is sleeved on the main shaft of motor (1), flange (5) is fixedlyed connected with working plate (10), it is characterized in that: also comprise eccentric block (3) and bearing (6), eccentric block (3) is sleeved on the fan blade (2), and fan blade (2) is provided with the block (2-1) that stops eccentric block (3) rotation with the cooperation place of eccentric block (3), the outer ring interference fit of flange (5) and bearing (6), the inner ring of bearing (6) are enclosed within eccentric block (3) and upward and with eccentric block (3) fixedly connected; Have biasing post (2-2) on the fan blade (2), have the axis hole that cooperates with the main shaft of motor (1) on this biasing post (2-2).

2. the two eccentric mechanism of sanding machine of sander according to claim 1, it is characterized in that: be fixed with plain washer (8) by screw (9) on the end face of motor (1) main shaft, plain washer (8) props up the lower surface of fan blade (2), and the external diameter of plain washer (8) is greater than the external diameter of fan blade (2) lower surface.

3. the two eccentric mechanism of sanding machine of sander according to claim 1 and 2, it is characterized in that: be provided with Boping pad (4) between the upper end of bearing (6) and the flange (5), the junction of bearing (6) lower end and eccentric block (3) is provided with split washer (7).