NL1018542C2 - Blade body of an electric planer with wind-groove-wood chip removal device. - Google Patents

Description

Brief indication: Blade body of an electric planer with wind-groove-wood chip removal device

The present utility model relates to an electric planer, and in particular to a knife body of an electric planer with a wind groove-wood chip removal device.

An electric planer is a commonly used electric tool, and it is desirable that wood chips do not remain on the work surface during use of the electric planer. Usually an electric planer is arranged to have the following functions: the wind generated by high speed blade rotation during rotation should be strong enough to blow wood chips out of the planer housing through a wood chip outlet. However, the knife bodies of the prior art only have knife mounting slots for clamping the knives, so that it is difficult to remove wood chips. In the existing electric planers, wood chips are sometimes clogged in the wood chip outlet, and some wood chips adhere to the inner wall of the planer housing to form wood chip plugs. All this brings inconvenience to the user of the electric planer.

For example, US-A-5 024 00 discloses a knife body of an electric planer machine in which two knife-mounting slots are provided in the knife body. The knife body is accommodated in a housing of the machine in which a wood chip removal opening is also included. The discharge opening extends substantially across the width of the knife body. During operation, rotation of the knife body also has the consequence that wood chips are discharged via the discharge opening.

Also with this known device it has been found that the removal of wood chips can be improved.

The object of the present utility model is to provide a knife body of an electric planer with a wind groove-wood chip drainage device, which is characterized in that a wind groove is provided on the knife body, which can not only blow away the wood chips through the outlet, but it can also prevent the wood chips from remaining on the work surface.

1018542 - 2 -

The present utility model provides a knife body of an electric planer with a wind groove wood chip drainage device, comprising a knife body mounted on the planer shaft, with knife mounting slots provided on the knife body, and wind grooves provided on the blade body.

According to another feature of the present utility model, a knife body of an electric planer with a wind-groove-wood chip removal device is further provided, comprising a knife body mounted on the planer shaft, knife mounting slots provided on the knife body, wind grooves are provided on the blade body, and baffle plates that are mounted with screws on the bottom of the wind grooves. Here, two ends of the baffle plate are bent upwards and oriented vertically with respect to the bottom so as to cover the two open ends of the wind groove.

The knife body of an electric planer with a wind-groove-wood chip removal device according to the present utility model comprises two or more wind grooves, the wind grooves being equally spaced around a circle whose center is the center line of the knife body.

Further preferred embodiments are defined in the subclaims.

The invention also relates to an electric planer according to claim 7.

25 BRIEF DESCRIPTION OF THE DRAWING

Figure 1 is the front view of the blade body of an electric planer with a wind groove wood chip draining device according to the present utility model.

Figure 2 is the side view of Figure 1 in the direction A.

Figures 3 and 4 are the side views of Figure 1 in the direction A in which the structures of different planer knife bodies of electric planers are shown.

Figure 5 is the top view of Figure 1 in the direction B.

Figure 6 shows the schematic operating condition of the blade body 35 of an electric planer with a wind groove-wood chip removal device according to the present utility model.

In this drawing, 1 indicates a knife body; 2 a position limiting plate; 3 a planer shaft; 4 a screw; 5 a wind groove; 1018542-3; 6 a baffle plate; 7 a knife mounting slot; 8 a planer housing; 9 a wood chip outlet; 10 wood shavings; 11 a planer knife; K the direction of rotation of the blade body; L the discharge direction of the wood chips.

The present utility model is further described and explained with reference to the drawings.

Figure 1 shows the front view of the blade body of an electric planer with a wind groove-wood chip drain device according to the present utility model, showing a wind groove 10 with a baffle plate 6 and a screw 4. FIG. 2 shows a wind groove 5 without a baffle plate 6 and screw 4. First, the knife body of an electric planer without baffle plate 6 and screw 4 according to the present utility model will now be described. The knife body of the electric planer with a wind groove-wood chip drainage device according to the present utility model comprises a knife body 1 mounted on the planer shaft 3, a position-limiting plate 2 provided to fix the knife body 1 , knife mounting slots 7 provided on the knife body 1, and two or more wind grooves 5 provided on the knife body 1. In Figure 2, two wind grooves 5 are provided on the knife body 1. These two wind grooves 5 are opposite each other on the circle whose center is the center line of the knife body 1, just like the two knife mounting slots 7 do. These two wind grooves 5 are symmetrical with respect to the central axis in radial direction so as to cause the knife body 25 to be dynamically balanced during its rotation at high speed.

Figure 3 is the side view of Figure 1 in the direction A, in which another blade body of an electric planer 1 is shown with a different construction according to the present use model. With this knife body 1 of the electric planer, the knife body has a wood chip removal device consisting of the wind grooves 5 and the baffle plates 6. The knife body 1 is mounted on the planer shaft 3. Two knife mounting slots 5 are provided on the knife body 1, two wind grooves 5 are provided on the blade body 1, 35 and a baffle plate 6 is fixed with screws to the bottom of each wind groove 5. As shown in Figure 5, two ends of the baffle plate 6 are bent upwards and oriented vertically with respect to the bottom of the wind groove to cover the two open ends of the wind groove 5, so as to prevent the wood chips from being brought along plates to be worked on along the wind groove 5 during operation of the knife body 1. The wind grooves 5 and knife mounting slots 7 alternate on provided equal distances around the circle, the center of which is the center line of the knife body 1.

Figure 4 shows another blade body of the electric planer with wind-groove-wood chip removal device according to the present utility model, which has three wind grooves 5 and three knife-mounting slots 7. As shown in Fig. 4, the three wind grooves 5 and the three knife mounting slots 7 are alternately provided at equal distances from each other around the circle, the center of which lies on the center line of the knife body 1. The baffle plates 6 are provided on the bottom of the wind grooves 5 so as to prevent wood chips from splashing around.

Figure 6 schematically shows the operation of the blade body of an electric planer with a wind groove-wood chip drain device according to the present utility model. As shown in Fig. 6, the knife body 1 is mounted on the planer shaft 3 and covered by a planer housing 8, with planers 11 mounted in the knife mounting slots 7 on the knife body 1. During operation, the knife body 1 rotates at high speed to work along the direction K and the wind groove 5 also rotates at high speed to generate wind for the easy removal of wood chips from the planer housing 8 via a wood chip outlet 9 along the direction L. In this way also the wood sawdust which adheres to 25 the inner wall of the planer housing 8 is tightly blown out. The baffle plate 6 covers the two open ends of the wind groove 5, and the wood chips 10 will be blown out via the wood chip outlet 9 rather than flying in the direction of the two open ends, so as to efficiently prevent the wood chips from coming on. fly surface of unprocessed wood.

Because the knife body according to the present utility model has added wind grooves, and during use the wind grooves rotate at high speed, the wood chips are blown out of the planer housing via the wood chip outlet together with the wood sawdust 35 that was adhered to the inner wall of the planer housing. Because a portion of the wood chips along the two wind grooves could end up on the plate to be machined via the two ends, a baffle plate is provided on the bottom of each wind groove to cover its two open ends. Wood chips can be brought continuously to the wood chip outlet under the influence of the rotating wind groove, instead of flying to the two open ends. Wood chips can thus be efficiently prevented from flying on the plate to be processed.

In summary, the blade body of the electric planer with wind-groove-chip removal device according to the present utility model has the following advantages: 1. Because the blade body according to the present utility model has added wind grooves, and during use the wind grooves rotate at high speed, wood chips become blown out of the planer housing via the wood chip outlet together with sawdust adhered to the inner wall of the planer housing.

2. Because parts of wood chips along the two wind grooves can be brought onto the plate to be processed via two open ends of the wind grooves, baffle plates are provided on the bottom of each wind groove to cover the two open ends according to the present utility model. Wood chips can be brought continuously to the wood chip outlet under the influence of the rotating wind groove, instead of flying in the direction of the two open ends. Thus, wood chips can be efficiently prevented from flying against the plate to be processed.

'in ? G c:, i 'i' ') U d Ö U Ή · <L ·

Claims (7)

Claims 1. Knife body of an electric planer with wind groove wood chip removal device, comprising a knife body provided around a center line and knife mounting slots provided on the knife body, characterized in that the knife body is provided with wind grooves. 2. Blade body of an electric planer with wind groove wood chip removal device, wherein a baffle plate is provided on the bottom of each wind groove for covering two lateral ends of the wind groove. 3. Blade body of an electric planer with wind-groove-wood chip removal device according to claim 2, characterized in that the baffle plates are mounted with screws on the bottom of the breeze grooves, and two ends of each baffle plate are bent upwards and are oriented vertically with respect to from the bottom to cover the two open ends of the wind groove. 20 4. Blade body of an electric planer with wind-groove-wood chip removal device according to one of the preceding claims, characterized in that there are two or more wind grooves. 5. Blade body of an electric planer with wind-groove-wood chip removal device according to claim 3, characterized in that the wind grooves are placed at equal distances around a circle, the center of which is the center line of the blade body. 6. Blade body of an electric planer with wind-groove-wood chip removal device according to one of the preceding claims, characterized in that the wind grooves and blade-mounting slots are alternately provided at an equal distance around a circle, the center of which is the center line of the blade body. Electric planer comprising a knife body with wind-groove-wood chip removal device according to one of the preceding claims. 35 1018542