JPH0757481B2 - Multi-axis molder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-axis moulder, and more specifically, a rotary cutting means is provided on each of the left and right sides of a table, and wood is placed between the rotary cutting means. In a multi-axial moulder configured to cut both side surfaces of the wood by passing the wood, the width dimension of the wood fed to the moulder is detected on the upstream side of the rotary cutting means, and one of the rotary cutting means is detected. The present invention relates to a multi-axis moulder in which the wood is moved forward and backward in a direction orthogonal to the feeding direction of the wood so that the width of the wood can be automatically determined.

BACKGROUND ART A board having a so-called drum structure in which plate-shaped materials are laminated on both sides of a frame material is used for furniture such as bookshelves and sideboards,
It is also used as a building material. This board with a drum structure is more advantageous than using a single plate in that it can reduce the material cost and reduce the weight, but on the other hand, since the board is hollow, great strength cannot be obtained. Moreover, when a heavy article is placed, the article is distorted, which makes it unattractive. In recent years, along with the trend toward higher quality, furniture using a single plate is desired, but furniture using this type of single plate is expensive, so it can be replaced with a single plate at a low price. Was desired.

Therefore, in order to realize this, so-called lateral striping has been proposed. This horizontal stripping process is a process of joining timbers with a short width in the width direction to produce a single wide plate material. By using this for furniture and building materials, it is possible to obtain a low-priced and high-class feeling. Some furniture can be provided. The lateral stripping process is one in which the materials are sequentially spliced in the width direction to produce a single plate, so the thickness must be constant, but the width dimension is not restricted. Therefore, a material having a short width such as a thinning material can be used for this lateral stripping process, and a random width material having a different width depending on the material is preferably used from the viewpoint of resource saving.

Problems to be Solved by the Invention A woodworking machine used for wood processing, for example, a multi-axis moulder, has rotary cutting bodies above and below and to the left and right of a table to which wood is fed, and feeds on the table surface. The wood to be cut is cut from the vertical cutting direction and the horizontal direction by the rotary cutting bodies to be processed into a predetermined shape.

By the way, when processing the above-mentioned random width material with this multi-axis moulder, it is possible to process all materials while keeping the interval between the rotary cutting bodies arranged above and below constant.
It is necessary to adjust the distance between the left and right rotary cutting bodies according to the width dimension of the material. However, it is time-consuming and complicated for the operator to manually adjust the distance between the rotary cutting bodies for each individual material. Therefore, conventionally, the random width material is classified in advance by a width dimension within a predetermined range, the interval between the left and right rotary cutting bodies in the moulder is adjusted to the minimum width dimension of each classified group, and the above-mentioned temporal, It is designed to address labor shortcomings. However, even in this case, it was still necessary to stop the machine for each group and adjust the interval between the rotary cutting bodies, and it was difficult to continuously perform wood processing. In addition, it is pointed out that it takes time to select materials beforehand.

A moulder has been developed which automatically adjusts the distance between the rotary cutting bodies in the moulder under the given conditions by operating a built-in computer. However, even with this type of computer molder, it is still necessary to sort the materials into groups in advance, and there is still a drawback that this sorting takes time.

Further, when processing the materials selected according to the groups, for example, when materials having a width dimension of 103 mm to 107 mm are grouped, the width dimension after processing is cut to 100 mm. That is, the material with the maximum width dimension in the group is cut by 7 mm, and processing all materials in one group to a constant width dimension
There was a problem in terms of effective use of materials.

OBJECT OF THE INVENTION The present invention has been proposed in order to suitably overcome the above-mentioned drawbacks inherent in cutting the width direction of such a random width material by a multi-axial moulder, and An object of the present invention is to provide a means capable of automatically processing the most effective width dimension according to the width dimension.

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve an intended object, the present invention provides a rotary cutting means fixedly arranged on one side of a table and a rotary cutting means. A front ruler vertically projecting from the installed side, a rotary cutting means located opposite to the front ruler with the table sandwiched therebetween, and arranged so as to be movable back and forth with respect to the front ruler, and this rotary cutting And a pressing roller which is arranged upstream of the means and moves forward and backward together with the rotary cutting means to press the side surface of the material to be processed, and the side surface of the material to be processed is sandwiched by the front ruler and the pressing roller. As a result, in the multi-axis moulder configured to determine the width of the material to be processed, the first detection means, which is arranged in relation to the pressing roller, detects contact with the material to be processed, and the first detection means. It is arranged on the front ruler side downstream of the means The rotary cutting means is provided with a second detecting means for detecting the arrival of the raw material, and a third detecting means arranged downstream of the both rotary cutting means on the front ruler side for detecting the passage of the material to be processed. , First
Driving means for automatically advancing and retracting the rotary cutting means is provided on condition that the detecting means and / or the second detecting means detect the material to be processed, and the first detecting means and the second detecting means are provided. The third detection means is configured to return to the initial state on condition that the passage of the material to be processed is detected.

EXAMPLES Next, a multi-axis moulder according to the present invention will be described below with reference to the accompanying drawings with reference to preferred examples. FIG. 1 is a schematic perspective view of a multi-axis moulder according to a preferred embodiment of the present invention, in which the table 12 of the moulder 10 is sandwiched between right and left,
A pair of rotary cutting bodies 14, 16 having a vertical rotation axis are arranged. A front ruler 18 is provided at the right end of the table 12 so as to project in the feeding direction of the wood, and the right side of the wood 20 is brought into contact with the front ruler 18 for positioning. Further, the front ruler 18 is provided with a cutout portion 18a, and the one rotary cutting body 16 which is rotationally driven by a motor (not shown) is provided upright in the cutout portion 18a. The cutting edge of the cutting blade disposed on the rotary cutting body 16 is adjustably projected from the vertical surface of the front ruler 18 facing the table 12 by a predetermined amount, and is fed along the front ruler 18. Cut the right side of 20 by this protrusion amount.

On the side facing the front ruler 18, there is provided a rotary cutting body 14 which can be moved forward and backward in a direction orthogonal to the feeding direction of wood (direction directed to the front ruler 18). That is, as shown in FIG. 1, the dovetail portions 22, 22 are formed in parallel on the surface of the table 12 at predetermined intervals in the feeding direction of the wood 20, and the dovetail portions 2
A groove 24 is defined between the two and 22. In this dovetail groove 24, a moving table 26 having a dovetail portion 26a provided on the bottom surface is provided so that the dovetail portion 26a is slidably faced, and can be moved back and forth with respect to the front ruler 18 by a mechanism described later. I am doing it.

A motor 28 is arranged on the back surface of the movable table 26 with its output shaft being vertical, and the rotary cutting body 14 is fixedly arranged on this output shaft. Further, as shown in FIGS. 1 and 3, a bracket 30 horizontally extends on the left side surface of the table 12,
A motor 32 with a speed reducer is disposed on the hanging portion 30a of the L-shaped bracket 30 with its output shaft directed toward the motor 28. An opening 12a is opened on the left side surface of the table 12, and a ball screw 34 connected to the output shaft of the motor 32 via a coupling is screwed into a nut 36 fixed to the motor 28 via the opening 12a. There is. Therefore, the moving table 26
Is capable of advancing and retracting in a direction orthogonal to the feeding direction of the wood 20 under the cooperative action of the ball screw 34 and the nut 36. The movable table 26 can move at a speed that can follow the feeding speed of the wood 20 fed by a feeding roller (not shown).

A cover 38 for covering the rotary cutting body 14 is provided on the moving table 26.
Is provided, and an arm 40 extending upstream of the rotary cutting body 14 is provided on the cover 38 (see FIG. 2). A plurality of (three in this embodiment) lateral pressing rollers 42 are arranged on the arm 40 with their rollers 42a oriented toward the front ruler 18. The width of the timber 20 is determined by sandwiching the 20. Here, as shown in FIG.
The tip of 42a is set so as to be disposed at a position retracted by a distance 1 from the cutting edge surface of the rotary cutting body 14 protruding in the table direction. As a result, the left side portion of the wooden piece 20 fed while being sandwiched between the roller 42a and the front ruler 18 is cut by the width l. In addition, the cover 38 has a guide body 39 for guiding the wood 20 cut by the rotary cutting body 14.
Is provided so as to extend downstream of the cutting body 14.

A first detecting means 44 including, for example, a limit switch is provided on the most upstream side lateral pressing roller 42 provided on the arm 40, and the roller 42a of the lateral pressing roller 42 is in contact with the wood 20. By detecting the, the arrival and the width dimension of the wood 20 are detected. Then, the detection signals of the first detection means 44 and the second detection means 48 described later are input to the control means (not shown), and the motor 32 is driven based on this input signal to move the rotary cutting body 14 forward and backward. is there.

The lateral pressing roller 42 provided with the first detecting means 44 is, for example, a shaft 42c slidably provided in a casing 42b,
A roller 42a pivotally supported by this tip (an end directed to the front ruler 18) and a compression spring (not shown) inserted in the casing 42b and always biasing the shaft 42c in the direction in which the roller 42a projects. And the casing 4 of the shaft 42c.
A piece to be detected 46 is arranged at the rear end protruding from 2b. Then, on the movement trajectory of the detected piece 46, the detection piece 44a
When the shaft 42c moves backward against the elastic force of the compression spring, the detected piece 46 comes into contact with the detection piece 44a so that the first detection means 44 is exposed. It is designed to be turned on. When the first detecting means 44 detects the detected piece 46, the tip of the roller 42a and the rotary cutting body 1
It is set so that the separation distance from the cutting edge of 4 is l.

As shown in FIGS. 1 and 2, the front ruler 18 is provided with a notch 18b on the downstream side of the first detecting means 44.
8b is provided with a second detecting means 48 which is, for example, a limit switch. The detection piece 48a of the second detection means 48 is projected from the notch 18b in the direction of the table 12, and the front ruler 18
The right side portion of the wooden piece 20 fed along with the contact piece 48a is in contact with the detection piece 48a. As a result, the second detection means 48 is turned on, and the arrival of the wood 20 is detected.

Here, the above-mentioned motor 32 advances the moving table 26 when the first detection means 44 is in the off state and the second detection means 48 is in the on state. When the first detecting means 44 is on and the second detecting means 48 is off, the mobile platform is
Move back 26. The motor 32 is controlled so as to be stopped when both the detecting means 44, 48 are in the off state or the on state.

A third detection means 50, which is, for example, a limit switch, is provided on the downstream side of the rotary cutting bodies 14 and 16, and the detection piece 50a is provided in the notch 18b provided in the front ruler 18 like the second detection means 48. It is projected toward the table 12 direction. This third
When the right side of the wood 20 comes into contact with the detection piece 50a of the detection means 50, the detection means 50 is turned on, and when the wood 20 is separated from the detection piece 50a, the detection means 50 is turned off,
The passage of the wood 20 will be detected. On condition that the third detecting means 50 is switched from the on state to the off state,
A command for returning the first detecting means 44 and the second detecting means 48 to the initial state is issued, and then the wood 20 can be fed.

Next, the operation of the multi-axial moulder thus configured will be described. Here, in the initial state, the front ruler 18 and the roller 42a of the lateral pressing roller 42 in which the first detecting means 44 is disposed.
If the distance from the tip is W ₁ and the width of the timber 20 is W ₂ , then W ₂ is W ₁
The case (W ₂ <W ₁ ) smaller than the above will be described. The right side of the wood 20 to be processed is brought into contact with the front ruler 18 of the moulder 10, and the wood 20 is fed along the ruler 18. It is assumed that the left rotary cutting body 14 and the lateral pressing roller 42 are previously made to stand by at the most retracted positions. The side presser roller
The shaft 42c of 42 is most extended by the elastic force of the compression spring, so the first detection means 44 is in the off state.

As shown in FIG. 4 (a), when the wood 20 is fed on the table along the front ruler 18 by a feeding roller (not shown), the right side portion of the wood 20 is detected by the second detecting means 48. Piece 48
It contacts a, which turns on the detection means 48. When the second detection means 48 is turned on, a drive command is issued to the motor 32 via the control means (not shown) to rotate the ball screw 34, and the nut 36 into which the ball screw 34 is inserted is fixed. The moved moving table 26 is moved forward (direction directed to the front ruler). Since the rotary cutting body 14 and the lateral pressing roller 42 are disposed on the moving table 26, they also move forward similarly.

When the movable table 26 moves forward, the roller 42a of the pressing roller 42 arranged on the most upstream side comes into contact with the left side surface of the wooden piece 20, whereby the roller 42a moves backward against the elastic force of the compression spring. As described above, the detected piece 46 is arranged at the rear end of the shaft 42c, and the first detected means 44 is turned on by the detected piece 46 (see FIG. 4 (b)). ).
When the control means (not shown) detects that both the first detection means 44 and the second detection means 48 are turned on, the motor 32 is stopped. As described above, when the first detection means 44 is turned on, the distance between the tip of the roller 42a and the cutting edge of the rotating body 14 is set to l.

Therefore, the wood 20 is the roller 42 of the front ruler 18 and the side pressing roller 42.
When the wood 20 is sandwiched by and fed, the right side surface of the wood 20 is cut by a predetermined amount and the left side surface is cut by a width l. When the wood 20 is further fed, the third detecting means
50 detects wood 20 and turns on. Then, when the rear end of the wood 20 passes through the third detection means 50 and is turned off,
The first detecting means 44 and the second detecting means 48 are returned to the initial state so that the next wood 20 can be fed.

Next, a case where the distance W ₁ between the front ruler 18 and the tip of the roller 42a is smaller than the width W _{2 of the} wood 20 (W ₁ <W ₂ ) will be described. As shown in FIG. 5 (a), the tip of the wood 20 fed along the front ruler 18 contacts the roller 42 a of the lateral pressing roller 42. When the wood 20 is further fed in this state, as shown in FIG. 5 (b), the roller 42a retracts and the first detecting means 44 is turned on. At this time, the second detection means
The 48 is not on yet. That is, since the first detection means 44 is in the on state and the second detection means 48 is in the off state, the motor 32 is controlled by the control means (not shown).
Is driven to retract the rotary cutting body 14 and the pressing roller 42. Then, when the pressing roller 42 is retracted, the roller 42a is separated from the wooden piece 20, and the shaft 42c is advanced by the action of the compression spring (see FIG. 5 (c)). As a result, the first detection means 44 is turned off and the drive motor 32 is
Is stopped.

The wood 20 fed by a feeding roller (not shown) is
The right side portion thereof comes into contact with the detection piece 48a of the second detection means 48 and turns on. As a result, the motor 32 is driven again to advance the rotary cutting body 14 and the lateral pressing roller 42. Then, thereafter, as in the case of W ₁ <W ₂ described above, the width dimension of the wooden piece 20 is detected by the first detecting means 44, and both sides of the wooden piece 20 are cut by a predetermined width. That is, the side surface of the wood 20 fed to the moulder 10 is cut by a certain amount regardless of the width dimension of the wood 20.

EFFECTS OF THE INVENTION As described above, according to the multi-axis moulder of the present invention, the width dimension of the material can be detected, and the rotary cutting body can be automatically moved according to the width dimension. Therefore, even when a material having a different width dimension such as a random width material is fed, each material can be cut into the most effective width dimension, and the yield can be improved. Further, it is not necessary to preliminarily select the material into groups within a predetermined range, and the interval between the rotary cutting bodies can be adjusted without stopping the machine, so that the work efficiency can be remarkably improved.

[Brief description of drawings]

The drawings show a preferred embodiment of the multi-axial moulder according to the present invention. FIG. 1 is a schematic perspective view of a preferred embodiment of the present invention, and FIG. 2 is a plan view of the apparatus shown in FIG. 3 and 4 are cross-sectional views taken along the line III-III in FIG. 2, and FIGS. 4 (a), (b),
(C) shows that in the initial state of the apparatus according to the present embodiment, W ₁ >
FIG. 5 (a), (b), and (c) are plan views showing the movements of the rotary cutting body and the lateral pressing roller with W _{2 with} the passage of time W ₁ in the initial state of the apparatus according to the present embodiment. FIG. 8 is a plan view showing the movements of the rotary cutting body and the lateral pressing roller with time of <W ₂ with time. 12 ... Table, 14 ... Rotation cutting body 16 ... Rotation cutting body, 18 ... Previous ruler 20 ... Wood, 42 ... Side holding roller 44 ... First detection means, 48 ... Second detection means 50 ... Third detection means

Claims (1)

[Claims] 1. A rotary cutting means (16) fixedly arranged on one side of a table (12), and a front ruler vertically projected on a side portion on which the rotary cutting means (16) is arranged ( 18), a rotary cutting means (14) which is located opposite to the front ruler (18) with the table (12) interposed therebetween, and which is arranged so as to be movable back and forth with respect to the front ruler (18). The front ruler is arranged upstream of the cutting means (14) and comprises a pressing roller (42) that moves forward and backward together with the rotary cutting means (14) to press the side surface of the material (20) to be processed. In the multi-axial molder configured to determine the width of the material to be processed (20) by sandwiching the side surface of the material to be processed (20) by the (18) and the pressing roller (42), the pressing roller (42 ), And a first detection means (44) for detecting the contact with the work material (20), and the first detection means (44). A second detecting means (48) arranged on the downstream side of the ruler (18) for detecting the arrival of the material to be processed (20), and a ruler on the downstream side of the both rotary cutting means (14, 16). A third detecting means (50) arranged on the (18) side for detecting passage of the material to be processed (20), and the rotary cutting means (14) has a first detecting means (44) and / or Drive means (32, 34, 36) for automatically moving the rotary cutting means (14) forward and backward is provided on condition that the second detection means (48) has detected the work material (20), The first detection means (44) and the second detection means (48) have a third
A multi-axis moulder, which is configured to return to an initial state on condition that the detection means (50) has detected the passage of the material to be processed (20).