JP2597786Y2 - Plane blade mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planer mounting structure for a planer for cutting the surface of a running wood with a planer fixed to a rotating planer.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional planer has a plurality of support rollers 2 for supporting the lower surface of a piece of wood 1 to be cut, provided on a base frame 3, and pressed onto the surface of the wood 1 on each of the support rollers 2. It is provided with a plurality of feed rollers 4 for rotating the wood at a constant speed by rotating it, and a planer trunk 6 provided with a plurality of planer blades 5 on the outer periphery.

In addition, holding members 7 and 8 are provided before and after the planer cylinder 6, and an exhaust duct 9 is provided above the planer cylinder 6 so that the planer dust generated by cutting is sucked by the duct 9. is there.

Further, the feed roller 4 is driven by a motor 10 in the direction of the arrow via transmission belts 11 and 12, and the plane 6 is driven by a motor 13 in the direction of the arrow via a transmission belt 14. Further, each of the feed rollers 4 is pressed against the wood 1 by a pressing means 15 such as an air cylinder.

FIG. 6 and FIG. 7 show an example of a conventional structure for mounting a cutting blade of a cutting blade type.

In this case, an axial recess 16 is formed at a predetermined position of the planer trunk 6, and an inverted T-shaped engaging groove 17 whose inside is enlarged to one side is formed at the bottom of the recess 16 in the axial direction. Formed.

Reference numeral 19 denotes a plane replacement blade, and a groove 20 is provided on the back surface thereof.
The groove 20 is formed with an engaging ridge 22 of the backing 21.
Removably engage with.

A convex portion 23 is formed on both sides of the lower end of the back seat 21. The convex portion 23 is engaged with the locking groove 17 with some play, and is pushed outward by a pressing spring 24. Have been.

A blade receiver 25 is fixed below the ridge 22 of the back seat 21, and a plurality of pressing springs 26 are mounted in a plurality of recesses below the blade receiver 25.

Reference numeral 27 denotes the wedge receiving surface 2 of the backing 21 and the recess 16.
The wedge 27 is pushed outward by a spring 30 to fix the backing 21.

In this conventional example, when the replacement blade 19 is replaced,
As shown by a chain line in FIG. 6, the detachment fitting 31 is applied to the outside of the wedge 27, and the upper end of the fitting 31 is patted lightly with a hammer.
After releasing the biting, the tool 32 for the replacement blade is attracted to a part of the plane body using the attraction force of the magnet as shown in FIG. 7, and the lower end of the pushing piece 33 fixed to the tool 32 is The wedge 27 is pushed in against the spring 30.

As a result, a gap is formed between the wedge 27 and the back seat 21, but since the pressure of the pressing spring 26 is acting on the back seat 21, the back seat 21 is inclined toward the wedge 27 and The pressure on the blade 19 by the blade 21 disappears, and the ridge 22 of the backing comes off from the groove 20 of the blade 19. Therefore, the replacement blade 19 can be easily replaced.

When the replacement of the spare blade 19 is completed, the tool 3
When the wedge 27 is removed from the planer body 6, the pushing of the wedge 27 by the pushing piece 33 is released, and the wedge 27 is pushed out by the spring 30. 19, the groove 20 and the ridge 22 of the back seat 21 are engaged.

[0014]

The above-mentioned prior art is much more convenient than the method of bolting the planer blade. However, when the spare blade 19 is replaced, the wedge 27 must be engaged. After the release, the wedge 27 must be continuously pushed in against the spring 30, so that there is a problem that a special tool 32 using a magnet is required.

An object of the present invention is to solve the above-mentioned problems and to provide a structure capable of replacing a planer blade without a special tool.

[0016]

Because to resolve the above problems, there is provided a means for solving], devised according to claim 1, in the recess for planer cutter attachment provided on Canna cylinder of a rotary type, a planer blade, this Plane
A planer blade tightening plate fixed to the front of the blade and this planer blade
Between the wedge receiving surface of the attachment plate and the wedge receiving surface of the recess,
Pressing both wedge bearing surfaces with centrifugal force to fix the planer blade to the planer cylinder
A wedge to be provided, and the lower end of the planer blade
At the bottom, a planer blade tightening plate is attached to the planer cylinder.
Radial engagement that is disengaged by moving in the axial direction of
In the planer blade mounting structure provided with each stop piece,
To the serial recess of the wedge receiving surface, the wedge pushed you into the recess and anti-in press spring
And a notch for retaining the pushed-in state of the wedge is provided .

[0017]

Since the present invention has the above-described construction, the planer blade tightening plate and the locking pieces provided in the planer blade mounting recesses respectively engage with each other to prevent the planer blade from being detached in the radial direction, and the wedge is formed. When the planer cylinder rotates at high speed without engaging with the notch of the planer blade mounting recess, the wedge comes into close contact with the planer blade tightening plate and each wedge receiving surface of the planer blade mounting recess due to centrifugal force. The planer blade is firmly fixed to the planer trunk.

Next, under the condition that the plane is stopped,
When the wedge is released by pressing the wedge with a hammer or the like, the wedge is pushed in against the spring pressure, and the outer end of the wedge is locked in the notch in the recess. There is a gap between the plates, so if you move the planer blade tightening plate slightly axially with the planer blade, the locking pieces of the planer blade tightening plate and the locking pieces of the planer blade mounting recess will be disengaged. The planer blade can be easily removed from the planer trunk. The planer blade can be easily mounted on the planer cylinder in the reverse order.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the entire planer board is the same as that of the prior art shown in FIG.
A description will be given with reference to FIG.

In these figures, a planer blade mounting groove 41 having a small width is formed in the planer cylinder 6 in the axial direction so that the planer blade 5 has a small play. The groove 41 is formed so that the blade receiving surface 42 with which the back surface of the planer blade 5 contacts makes an acute angle with the peripheral surface of the planer trunk 6.

The side of the groove 41 facing the blade receiving surface 42 is lowered to provide an axial recess 43 following the groove 41. A wedge 44 enters the recess 43, and a wedge receiving surface 45 of the recess 43 facing the blade receiving surface 42 is inclined in a direction opposite to the blade receiving surface 42.

On the concave 43 side of the planer blade mounting groove 41, inverted L-shaped locking pieces 46 facing the concave 43 are formed at regular intervals.

Reference numeral 47 denotes a planer blade tightening plate fixed to the front surface of the planer blade 5 with a plurality of bolts. It is provided in.

The front surface of the planer blade tightening plate 47 serves as a wedge receiving surface 49 that comes into contact with the wedge 44. The upper end is inclined so as to approach the planer blade 5, and the lower end of each of the locking pieces 48 is formed. The wedge-side surface is parallel to the planer blade 5.

A concave hole 50 is provided in the center of the upper surface of the wedge 44, the bottom of the wedge 44 is formed in a shallow V-shape, and the bottom of the recess 43 is also formed in a shallow V-shape.
Shape.

Further, recesses 51 and 52 are provided in the bottom of the wedge 44 and the bottom of the recess 43, respectively, and the pressing spring 5
The spring 53 pushes the wedge 44 outward, and at the same time, applies a force so that the upper part of the wedge 44 is inclined toward the wedge receiving surface 45. Further, the wedge receiving surface 45 is provided with a notch 54 for locking the upper end of the wedge 44.

Next, the operation of the above embodiment will be described. FIG.
With the planer blade 5 fixed to the planer cylinder 6 and the planer cylinder 6 rotating at high speed in the direction of the arrow, the planer blade tightening plate 47
Is locked to the locking piece 46 on the planer cylinder 6 side,
The wedge 44 is pressed against the wedge receiving surfaces 45 and 49 by centrifugal force to firmly fix the planer blade 5 to the planer trunk 6.

In order to remove the planer blade 5 fixed to the planer cylinder 6 as described above, the tip of the removal rod 55 is inserted into the concave hole 50 of the wedge 44 while the planer cylinder 6 is stopped. If the rear end is hit with a hammer, the engagement of the wedge 44 is released, so that the wedge 44 is pushed in against the spring 52 as shown in FIG.

At this time, since the upper end of the wedge 44 is inclined toward the wedge receiving surface 45 by the action of the spring 53, when the pressing of the wedge 44 is loosened, the wedge 44 slightly returns by the action of the spring 53, and FIG. , The upper end of the wedge 44 is locked by the notch 54 and does not return any more.

In this state, the wedge 44 and the planer blade tightening plate 47
There is a gap between them. Therefore, when the planer blade 5 at the position I of FIG.
The planer blades 5 can be easily removed from the planer trunk 6 together with the fastening plate 47 because they are released to the side of the respective locking pieces 46. Attachment of the planer blade 5 to the planer cylinder 6 can be easily performed in the reverse order.

[0031]

[Effect of the invention] As described above, according to the invention,
Press spring on the wedge receiving surface of the concave for mounting the planer blade
Lock the outer end of the wedge pushed into the recess against
Notch for maintaining the condition
When the wedge is pushed into the wedge, the wedge
Can be held without using special tools,
The planer blade can be easily attached and detached.

[0032]

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of an embodiment when a planer blade is fixed.

FIG. 2 is an enlarged cross-sectional view when the planer blade is loosened.

FIG. 3 is an enlarged cross-sectional view when the wedge is locked.

FIG. 4 is a partially cutaway longitudinal sectional view showing engagement and disengagement of a plane blade.

FIG. 5 is a front view showing an example of a known planer.

FIG. 6 is an enlarged cross-sectional view of a conventional example when a planer blade is fixed.

FIG. 7 is an enlarged cross-sectional view when the planer blade is removed.

[Explanation of symbols]

 5 Planer Blade 6 Planner Cylinder 43 Recess 44 Wedge 45 Wedge Receiving Surface 46 Locking Piece 47 Planer Blade Tightening Plate 48 Locking Piece 49 Wedge Receiving Surface 53 Press Spring 54 Notch

Claims (1)

(57) [Scope of request for utility model registration] 1. A planer blade and a front surface of the planer blade are fixed in a planer blade mounting recess provided in a rotary planer body.
And the wedge receiving surface of the planer blade
It is located between the wedge receiving surface of the recess and both wedge receiving
And a wedge that secures the planer blade to the planer
At the bottom of the planer blade tightening plate and the bottom of the recess,
Transfer the planer blade tightening plate to the planer cylinder in the axial direction of the planer cylinder.
The locking pieces that are disengaged by moving
In the mounting structure of the plane blade provided, the outer end of the wedge pushed into the recess against the pressing spring is locked to the wedge receiving surface of the recess.
And, characterized in that a cutout for holding the pushing state of the wedge
The mounting structure of the planer blade.