JP2000229301A - Planer for cutting wood or similar object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow to keep the pressing force during the feeding of a working wood constant and, at the same time, to properly adjust the pressing force in response to the properties of the working wood. SOLUTION: Above a transferring plane (a) comprising a positive driving endless belt 5, a rotary cutter head 11 is arranged at a cutting distance between them. In the neighborhood and before and after the rotary cutter head 11, the pressing members of a working wood W consisting of a chip breaker 13 and a pressure bar 17 are arranged. Before and after the chip breaker and the pressure bar, pressing members consisting of pressing rollers 21 and 23 are arranged. By actuating the pneumatic pressure cylinders 15, 19, 23 and 26, pressing forces are given. Further, with these pneumatic pressure cylinders, pressure regulating valves are severally equipped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planer for cutting wood or the like using a rotating planner.

[0002]

2. Description of the Related Art It is generally well-known that a machine is provided with a table and a rotating planer cylinder disposed above the table, for cutting a workpiece to be transferred on the table to a predetermined thickness. This machine is called an automatic one-sided board, and details of its configuration are disclosed in, for example, Japanese Patent Application Laid-Open No. 53-140700.

In this conventional planing machine, a positively driven feed roller disposed in front of and behind a rotary planer cylinder is used to transfer a work material, and the work material is transferred by pressing the work material against a table surface. It is.

[0004] This automatic one-sided planer is also known from Japanese Utility Model Publication No. 6-9766 proposed by the present applicant. The planer according to the present invention has a transfer plane (table) constituted by an endless belt driven positively.
In addition to this, a pair of front and rear pressing rollers are disposed above the transfer plane, and the work material is pressed against the table surface to obtain a material feeding force.

[0005] In the above-mentioned conventional planer,
In both cases, a chip breaker and a pressure bar are provided before and after approaching the rotating planer body, and cutting is performed by holding down the vicinity of the cutting position by both pressing members.

[0006]

By the way, in the conventional planer, the pressing force of the feed roller (pressing roller) is applied by the elastic force of the compression spring, and the pressing force of the chip breaker and the pressure bar is applied. Is similarly provided by a compression spring. Here, in particular, the pressing member on the front side of the rotary planer cylinder may rise significantly due to the relationship between the cutting allowance and the warpage of the work material. Had occurred. As a result, there is a problem of causing troubles in transportation and further damage to the structure, and there is still a need for improvement.

Further, when adjusting the pressing force of the pressing member in accordance with the properties of the work material, for example, its width, length or warpage, bending, etc., the conventional operation is very troublesome, quick and time-consuming. There is a problem that the adjustment setting cannot be performed properly.

The present invention has been made in view of the above-mentioned problems of the prior art, and can always obtain a constant pressing force irrespective of the amount of displacement of a pressing member, and can respond to the properties of a work material. An object of the present invention is to provide a planer for cutting wood or the like, which can quickly and appropriately adjust and set the pressing force.

[0009]

In order to achieve the above-mentioned object, a planer for cutting wood or the like according to the present invention has the following construction.

[0010] That is, the gist of the invention is to arrange a rotating plane cylinder on the upper part of the table with a space between the materials.
In a planer board which presses and transfers a work material on a table by pressing members disposed on the front side and rear side of a rotating planer cylinder, a pressing force for applying a pressing force by air pressure to at least the front side of the pressing members. That is, the actuation means are linked.

According to a second aspect of the present invention, in the planer board according to the first aspect, the pressing operation means is constituted by a pneumatic cylinder and a pressure regulating valve for supplying pressurized air to the pneumatic cylinder. And

According to a third aspect of the present invention, in the planer board of the first aspect, the pressing operation means is constituted by a pneumatic bag and a pressure regulating valve for supplying pressurized air to the pneumatic bag. And

In the planer board according to the present invention, since the pressing force of the work material is applied by air pressure, a constant pressing force can be always maintained regardless of the displacement amount. Also,
In the case of claim 2 and claim 3, the supply pressure can be easily adjusted by the pressure adjusting valve, and the pressing force can be quickly and easily set appropriately.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a planer according to the present invention will be described below. 1 and 2,
1 is a base frame. 2 is a feeder frame provided fixedly on the base frame 1. 3 is a horizontal drive roller provided at the rear end of the feeder frame 2. 4 is a driven roller provided at the front end. And an endless belt stretched over the driven roller 4. A transfer plane a for transferring the workpiece W is formed on the upper surface of the endless belt 5.

Reference numeral 6 denotes a horizontal guide plate laid below the transfer plane a. 7 is a drive motor linked to the drive roller 3 via a speed reducer. The drive motor 7 is driven by an output signal from a changeover switch or a detection switch described later. The endless belt 5 rotates forward and backward to drive the endless belt 5 backward and forward. As the endless belt 5, a resin belt, a metal belt, or the like having a small compressibility and a large surface friction coefficient is used.

Reference numeral 8 denotes a vertical guide provided on the side surface of the base frame 1. Reference numeral 9 denotes an elevating frame movably disposed on the vertical guide 8. The elevating frame 9 has a gate shape when viewed from the front. A pair of left and right bearing cylinders 10 and 10 are provided. Reference numeral 11 denotes a rotating planer body rotatably provided by the bearing cylinders 10 and 10. The rotating planer body 11 is a well-known type having a large number of blades on its peripheral surface, and is driven in a fixed direction (counterclockwise in FIG. Direction).

Reference numeral 13 denotes a pressing member (hereinafter, referred to as a chip breaker) arranged so as to surround the front half of the rotary planer cylinder 11 and is supported by a horizontal support shaft 14 to form an arm. A free end portion is provided with a contact member 13a protruding downward. 15 is a pneumatic cylinder disposed rearward on the lifting frame 9 side. This pneumatic cylinder 15 constitutes a pressing operation means, connects its piston rod 15a to the chip breaker 13, and raises and lowers the contact portion 13a at the tip. Operate. Reference numeral 16 denotes a first stopper member for setting the lower limit of the contact portion 13a.

The above-mentioned chip breaker 13 is divided into a large number in the left-right direction as shown in FIG. Is available.

Reference numeral 17 denotes a rear pressing member (hereinafter referred to as a pressure bar) provided so as to surround the rear half portion of the rotary planer body 11. The pressure bar 17 is supported by a vertical guide (not shown). And the contact part 17 at the lower end
a is provided. Reference numeral 19 denotes a pneumatic cylinder disposed downward on the lifting frame 9 side. The pneumatic cylinder 19 constitutes a pressing operation means, and connects its piston rod 19a to the pressure bar 17, and raises and lowers the contact part 17a at the tip. Operate. Reference numeral 20 denotes a first stopper member for setting a lowering limit of the contact part 17a.

Reference numeral 21 denotes a front-side pressing roller disposed in front of the contact portion 13a of the chip breaker 13. The front-side pressing roller 21 is a free-running roller.
2 is slidably engaged with a vertical guide (not shown). Reference numeral 23 denotes a pneumatic cylinder disposed downward on the lifting frame 9. The pneumatic cylinder 23 constitutes a pressing operation means, and connects the piston rod 23a to the support shaft 22 to move the pressing roller 21 up and down. The lower limit position of the pressing roller 21 is set by a stopper member (not shown).

Reference numeral 24 denotes a rear pressing roller disposed at the rear of the contact portion 17a of the pressure bar 17. The rear pressing roller 24 is composed of an idler roller.
5 is slidably engaged with a vertical guide (not shown). Reference numeral 26 denotes a pneumatic cylinder disposed downward on the lifting frame 9. The pneumatic cylinder 26 constitutes a pressing operation means, and connects the piston rod 26a to the support shaft 25 to raise and lower the pressing roller 24. The lower limit position of the press roller 24 is set by a stopper member (not shown).

At the above-mentioned lower limit position, the contact portion 13a of the chip breaker 13, the contact portion 17a of the pressure bar 17, and the lower surface positions of the front and rear pressing rollers 21 and 24 are located below the cutting position of the rotary plane cylinder 11. It is at a slightly lowered position and exerts a pressing force on the workpiece W to be transferred. In addition, the ascending limit positions of these holding members are set as retreat positions above the cutting positions of the rotary plane cylinder 11 within the stroke ranges of the pneumatic cylinders 15, 19, 23, and 26.

FIG. 4 shows each of the pneumatic cylinders 15, 1
9, 23, 26 are pneumatic circuits, 27 is a compressor, 28 is a filter, 29a to 29d is an electromagnetic switching valve for switching the air supply port by an electromagnetic solenoid, 30a to 30d is a pressure regulating valve, 31a to 31d is a speed regulating valve. is there. The electromagnetic solenoid operates according to a detection signal of a detection switch described later, and changes the air supply direction.

A lifting means 33 adjusts the lifting frame 9 in the vertical direction, and sets an interval between the transfer plane a and the rotating planner 11, that is, a cutting interval. The lifting means 33 is provided on the base frame 1 side in the vertical direction. Feed screw shaft 34,
A passive nut 35 on the side of the lifting frame 9 screwed to the feed screw shaft 34, a drive motor 36 linked to the feed screw shaft 34 via a transmission member such as a gear, and a controller (not shown) for controlling the rotation of the drive motor 36. Constitute.

Reference numeral 37 denotes a receiving conveyor 38 for the work material W disposed at the front of the transfer plane a, and a receiving conveyor 39 disposed at the rear of the transfer plane a. Detection switch The controller (not shown) that has received the detection signal from the detection switch 39 confirms that the end of the workpiece W has passed through a series of detection signals of “material-material-material-material” of the detection switch. The rotation of the drive motor 7 of the endless belt 5 is controlled.

The above-mentioned terminal passing signal is supplied to the elevating means 33.
The rotation of the drive motor 36 is controlled. On the other hand, the controller receiving the detection signal from the detection switch 39 detects the passage of the front end of the workpiece W, that is, the “non-material” detection operation and the end passage detection operation, and the electromagnetic switching valve 29a
To 29d to sequentially operate the pneumatic cylinders 15, 19,
Air supply switching to 23 and 26 is performed.

The configuration of the planer board for cutting wood or the like according to one embodiment is as described above, and the working material is cut as follows. First, a case in which a cutting allowance is large, that is, a material having a large dimensional difference between a material and a product is cut will be described.

First, the drive motor 36 of the lifting / lowering means 33 is controlled by a controller (not shown), and the cutting interval is set in accordance with the finished dimensions of the product. After setting these dimensions,
The endless belt 5 is moved backward by the drive motor 7 and the rotating planer cylinder 11 is driven to rotate, and the workpiece W on the receiving conveyor 20 is fed backward. The above-mentioned work material W has a thickness larger than the cutting interval dimension and has a large shaving allowance.

When the work material W reaches the transfer plane a of the endless belt 5, the positive automatic transfer force starts the backward automatic feed. When the leading end reaches the position of the detection switch 39, the electromagnetic switching valve 29c is switched by the detection signal, and the pneumatic cylinder 23 lowers the front pressing roller 21. This lowering operation is timed so as to be performed immediately after the front end of the work material W passes therethrough, so that the pushing-up operation of the press roller 21 by the front end of the work material W does not occur.

The descending operation of the chip breaker 13 by the pneumatic cylinder 15 is also timed so that the tip of the workpiece W passes immediately after passing through the tip breaker 13 in the same manner as described above. No push up occurs.
Therefore, the work material W can be pressed softly, and the material can be smoothly fed on the transfer plane a.

When the end of the workpiece W transferred in this way reaches the position of the rotary plane cylinder 11, cutting is started. Then, a pressure bar 1 is placed on the cut surface.
The contact portion 17a of 7 acts to press downward. The pressure bar 17 is controlled in the same manner as the press roller 21 and the chip breaker 13, and is timed so as to be lowered immediately after the front end of the workpiece W has passed.

The lowering operation of the pressing roller 24 on the rear side by the pneumatic cylinder 26 is also performed immediately after the front end of the workpiece W passes therethrough in the same manner as described above. As described above, the work material W is supplied to the pressing rollers 21 and 2 before and after the pneumatic cylinder operates.
The cutting is performed by the rotating planer cylinder 11 while being pressed by the chip breaker 4, the chip breaker 13, and the pressure bar 17.

The front pressing roller 21 and the chip breaker 13 are operated by the pneumatic cylinders 15 and 23 so as to be raised to the retracted position immediately before the workpiece W passes the terminal end. For this reason, there is no impact operation due to the depression of these holding members, and it is possible to eliminate the adverse effects such as the formation of a knife mark on the cut surface.

As described above, when the workpiece W is cut to its end, the cutting interval is opened by the controller, and then the endless belt 5 rotates backward and is driven forward. Thereby, the processed workpiece W is returned to the first feeding position. By the opening operation of the above cutting interval,
Since the rotary plane cylinder 11 and each holding member are retracted from the finished surface, there is no fear of damage. Therefore, the endless belt 5 can be rotated at a high speed and quickly returned.

The setting of the pressing force by each of the above-mentioned pressing members, ie, the front and rear pressing rollers 21 and 24, the chip breaker 13 and the pressure bar 17, is performed by the pressure adjusting valve 30a connected to the pneumatic cylinders 15, 19, 23 and 26, respectively.
From 30d to 30d outside. The pressing force is large in proportion to the width dimension of the workpiece W, and it is based on the fact that the larger the warpage or bending, the stronger the setting. However, when the sheet thickness is very small, vibration tends to occur. Correct with.

In the above-described embodiment, the pressing members on both front and rear sides are all operated by the pneumatic pressing operation means. Since it is always the same as the planer cylinder, the operating range of the rear pressing member (the pressure bar 17 and the rear pressing roller 24) among the above is narrowly limited. Therefore, the pressing state may be maintained by the lowering operation, and the configuration using the same spring system as that of the related art may be adopted.

In the above embodiment, the pressing members are lowered and retracted in a timely manner in order to prevent the pressing member from being pushed up and dropped by the end of the workpiece W. If it is a cutting operation in a range, it is not always necessary to do so. At this time, each of the pressing members may be simply lowered to hold the pressed state.

In one embodiment, the pneumatic cylinders 15, 1
The front and rear pressing rollers 21, 24, the chip breaker 13, and the pressure bar 17 were pressed by 9, 23, and 26, but the pneumatic bag in which the pressurized gas was sealed, that is, the rubber tube, was covered with the outer skin. The configuration can be changed to a pneumatic bag. In this pneumatic bag,
The air regulated by the pressure regulating valve is supplied through a pipeline.

The above-described pressing means using the pneumatic bag has a simple structure as compared with the pneumatic cylinder, and can save space. Further, when adopted in the chip breaker 13, all the components in the arrangement direction can be covered by one pneumatic bag, and the cost can be reduced.
In this pneumatic bag system, the respective pressing members cannot be retracted, but only operated in one direction.

Further, in one embodiment, four holding members are provided. However, the machining allowance can always be set appropriately, and the length and width are sufficient and the work is widely joined to the transfer plane a. In the case of the material W, a configuration in which the front and rear pressing rollers 21 and 24 are removed as shown in FIG. 5, that is, a pressing member can be configured by only the chip breaker 13 and the pressure bar 17. Also in this case, it goes without saying that the above-described pneumatic bag method can be adopted.

In FIG. 5, reference numeral 50 denotes a pneumatic bladder 51 is a pipeline for supplying pressure air adjusted by a pressure regulating valve (not shown) to the air bladder 50. In the illustrated example, the pressure bar 17 is provided with a conventional spring-type pressing operation means, and the present invention is also realized by this.

In the structure of the embodiment, if a negative pressure is applied to the transfer plane a, the workpiece W can be sucked and held, and the material can be fed more reliably and stably. Further, in the above-described embodiment, the front and rear pressing rollers 21 and 24 are of the idle type, but may be positively driven in synchronization with the endless belt 5.

[0043]

As described above, according to the planer of the present invention, even when the displacement is large, the work material is always transferred with a constant pressing force by using the air pressure, and stable cutting is performed. The effect is excellent.

According to the planer of the second or third aspect, the pressing force can be adjusted quickly and appropriately according to the properties of the work material, and the material feeding operation can be performed smoothly and smoothly. The effect that it can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a planer for cutting wood or the like according to the present invention.

FIG. 2 is also a side view.

FIG. 3 is an explanatory view showing a configuration of a main part.

FIG. 4 is an explanatory diagram illustrating a configuration of a pneumatic circuit that operates a pressing operation unit.

FIG. 5 is an explanatory diagram of a main part showing another embodiment.

[Explanation of symbols]

 Reference Signs List 5 Endless belt a Transfer plane 11 Rotating planer cylinder 13 Front holding member (chip breaker) 15 Pneumatic cylinder (pressing means) 17 Rear holding member (pressure bar) 19 Pneumatic cylinder (pressing means) 21 Front side Pressing roller 23 Pneumatic cylinder (pressing means) 24 Rear pressing roller 26 Pneumatic cylinder (pressing means) 29a to 29d Electromagnetic switching valve 30a to 30d Pressure adjusting valve 39 Detection switch W Workpiece

Claims (3)

[Claims] 1. A rotary planer cylinder is disposed above a table at a material feeding interval, and a work material on the table is transferred by being pressed by holding members disposed on the front and rear sides of the rotary planer cylinder. What is claimed is: 1. A planer board for cutting wood or the like, wherein at least a front side of said holding members is connected to a pressing means for applying a pressing force by air pressure. 2. A planer for cutting wood or the like according to claim 1, wherein the pressing operation means comprises a pneumatic cylinder and a pressure regulating valve for supplying pressurized air to the pneumatic cylinder. 3. A planer for cutting wood or the like according to claim 1, wherein the pressing operation means is constituted by a pneumatic bag and a pressure regulating valve for supplying pressurized air to the pneumatic bag.