JPH07242Y2 - Dust collector for woodworking machines - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector for a woodworking machine such as a router for woodworking, which removes chips and the like produced by machining by air suction.

[0002]

2. Description of the Related Art Conventionally, as such a dust suction device, as disclosed in, for example, Japanese Utility Model Publication No. 1-33290, a motor is housed in a dust suction hood, and a dust suction passage is provided between the motor and the hood. Formed one, or real public sho 60
As disclosed in Japanese Patent Publication No. -13605, there is known one in which the housing of the motor itself also serves as a dust suction hood.

[0003]

DISCLOSURE OF THE INVENTION An object of the present invention is to make it possible to increase the dust collecting flat area and improve the dust collecting efficiency without increasing the size of the apparatus, as compared with the prior art.

[0004]

According to the present invention, a dust suction passage is formed between a spindle motor and a motor hood (including a case where the motor hood is also used), and an auxiliary dust suction passage which joins the dust suction passage is formed. It is formed on the ram that holds the processing head. At the lower end of the motor hood, it is preferable to provide a dust suction hood that covers the lower surface openings of the dust suction passage and the auxiliary dust suction passage. A brush can be hung vertically on the dust hood so as to be vertically movable.

[0005]

[Function] The flat surface area of the dust suction is increased by the amount of the auxiliary dust suction passage formed in the ram. Chips and the like can be guided to the dust suction passage and the auxiliary dust suction passage by one dust suction hood that is common to the dust suction passage and the auxiliary dust suction passage. By making the brush movable up and down with respect to the dust suction hood, the brush can be retracted upward when changing tools.

[0006]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an NC equipped with a dust suction device according to the present invention.
The whole of the woodworking router is shown. This woodworking router has a beam 3 horizontally installed between the left and right columns 1 and 2,
The carriage 4 is mounted so as to be slidable left and right as is known, and two machining heads 5 are arranged side by side on the front surface of the carriage 4 so that they can be individually moved up and down by a head lifting motor 6 as is known. is doing. Further, the left and right slide tables 7 on which the processed material is placed are mounted on the left and right beds 8 so as to be slidable back and forth. The carriage 4 is prepared for each machining head 5 and
May be mounted separately and both carriages may be connected so as to slide integrally, or one common to both processing heads 5 may be used.

Further, on the front surface of the carriage 4, the left and right processing heads 5 are made to correspond to each other in a one-to-one relationship.
A tool magazine 9 of a table and two replacement units 10 on the left and right are attached. The left and right tool magazines 9 are located at the left and right ends of the carriage 4, and the left and right replacement units 10 are located between the processing head 5 and the tool magazine 9, respectively. FIG. 2 shows the front side of the left side pair, FIG. 3 shows the left side surface, and FIG. 4 is an enlarged bottom surface.
The front is partially cut away and shown enlarged.

As shown in FIGS. 6, 7 and 8, each machining head 5 has a motor hood 13 fixed to a ram 12 vertically slid vertically along a longitudinal rail 11 on the front surface of the carriage 4. A spindle motor 15 for rotating a spindle 14 is fixed in the motor hood 13 via a plurality of ribs 16 and 17, and the motor hood 13 and the motor 15 are partitioned by the ribs 16 and 17. A plurality of dust suction passages 18 are formed. A longitudinally elongated recess 19 is provided on the front surface of the ram 12, and the recess 19 is partitioned from the dust suction passage 18 in the motor hood 13 by the rib 17 to form an auxiliary dust suction passage 20. A tool attaching / detaching cylinder device 15a for attaching / detaching a tool to / from the spindle 14 is provided on the upper end of the motor 15, and the cylinder device 15a is also housed in the motor hood 13. The motor hood 13 may have a structure that also serves as a housing for the motor 15 itself.

A rectangular dust hood 21 is fixed to the lower end of the motor hood 13. The dust hood 21 has a size including the entire lower surface opening of the motor hood 13 and the lower surface opening of the auxiliary dust suction passage 20. The plurality of dust suction passages 18 and the auxiliary dust suction passages 20 join the connection port 22 at the upper end of the motor hood 13. The connection ports 22 of the two processing heads 5 are connected to the common duct 23 shown in FIG.
Dust suction passage 18 and auxiliary dust suction passage 20 of the processing head 5 of the table
Receives air suction all at once.

On the outer periphery of the lower end portion of the dust collecting hood 21, there is provided a rectangular ring-shaped brush holder 25 in which a brush 24 is vertically installed.
Cylinder device 2 fixed to both outer surfaces of the motor hood 13
It is supported at the lower end of the piston rod 27 of No. 6. In a normal state where the piston rod 27 is extended, the brush 24 is set at a lower position surrounding the tool 28 held by the spindle 14 as shown in FIGS. 6 and 8,
When the piston rod 27 contracts, the brush 24 is raised to the upper retracted position exposing the tool 28 as shown in FIG.

When performing a working operation with the tool 28,
With the brush 24 at the lower position, dust is absorbed through the dust absorbing hood 21 while sweeping chips with the brush 24. Processing head 5
Includes a plurality of dust suction passages 18 between the motor 15 and the motor hood 13, and an auxiliary dust suction passage 20 in the ram 12,
Moreover, since the dust suction hood 21 and the brush 24 have a size in which the plane areas of the dust suction passage 18 and the auxiliary dust suction passage 20 are combined, the dust suction area is widened by the plane integration of the auxiliary dust suction passage 20 to improve the dust suction efficiency. Can be improved.

As shown in FIG. 8, the spindle 14 itself has a structure in which a head portion 29 of a tool 28 is fitted into a tool receiving hole 30 from below and is detachably clamped by a collet chuck 31. The operation shaft 31a of the collet chuck 31 penetrates through the spindle 14 and is connected to the piston of the tool attaching / detaching cylinder device 15a. An air passage 31b is provided through the operation shaft 31a.

Next, each tool magazine 9 is shown in FIGS.
The horizontal circular index plate 32 is rotated by a known structure by an indexing motor 33 as shown in FIG. The index plate 32 has
Tool pots 34, each of which holds one tool 28 detachably, are provided in the circumferential direction with a predetermined phase difference.
The tool pots 34 are indexed one by one at the replacement position P shown in FIG. 4 by the rotation of the index plate 32. Each tool pot 34 is provided with a key 35 for positioning the tool 28.

As shown in FIG. 5, the indexing motor 3
A pipe-shaped air nozzle 37 is vertically provided above the replacement position P on the base plate 36 of No. 3, and air is jetted from the air nozzle 37 into the tool pot 34 at the replacement position P when the tool is replaced. A hood 38 is provided on the upper side of the indexing motor 33, and the motor 33 and the index plate 32 are housed in a transparent protective cover 39 that is open at the peripheral portion of the replacement position P.

As shown in FIGS. 4 and 5, each exchange unit 10 accommodates a servo motor 41 in a housing 40, and the rotation of the servo motor 41 in the housing 40 is
The rotation transmission mechanism 42 using a belt and a pulley transmits the rotation shaft 43 to the rotation shaft 43, and the cylinder device 44 (FIG. 2) mounted outside the upper end of the housing 40 moves the rotation shaft 43 up and down. Swivel axis 43
The central portion of the arm 45 is fixed to the lower end of the arm 45, and the arm 45 is horizontally swung by the servo motor 41. In addition,
The mechanism for rotating the arm 45 may use a cylinder device. At both ends of the arm 45, the roller 4
A finger 47 pivotally supporting 6 is pivotally attached to a pin 48 as a fulcrum. Each finger 47 is biased by a spring 49, and the tip hook portion 50 of the arm 45 itself constitutes a grip 51 for gripping the constricted portion of the tool 28.

Spindle 14 and index plate 3
The exchange of the tool 28 between the two is performed for each machining head 5 in the following procedure. (1) The machining head 5 is lifted by the head lifting motor 6, and the spindle 14 is stopped at a predetermined height. (2) In the processing head 5, the spindle 14 is the motor 1
It is locked by a lock mechanism (not shown) in the unit 5.

(3) In the tool magazine 9, the index plate 32 is rotated by the indexing motor 33, and the tool 28 to be newly replaced is indexed to the replacement position P. (4) In the replacement unit 10, the arm 45 is swung from the standby position by the servo motor 41, and one of the grips 51 at both ends grips the tool 28 held by the spindle 14 and, at the same time, grips the other grip 51.
Grips the tool 28 indexed to the replacement position P.

(5) In the exchanging unit 10, the arm 45 is lowered by the cylinder device 44, and at the same time, in the machining head 5, the operating shaft 31a of the collet chuck 31 is lowered by the cylinder device 15a to move the tool 28 from the collet chuck 31. Is released and the operating shaft 31
The tool 28 is pushed out of the tool receiving hole 30 by a.
As a result, the tool 28 held on the spindle 14 is
Is disengaged from the spindle 14 and held by one grip 51 of the arm 45. At the same time, the tool 28 held in the tool pot 34 at the exchange position P is pulled out from the tool pot 34 and held in the other grip 51. At this time, in the processing head 5, air is jetted from the air passage 31b of the operation shaft 31a. At this time, air may be jetted from the air nozzle 37 also in the tool magazine 9.

(6) The arm 45 is swung to the neutral position. (7) Index plate 3 in tool magazine 10
2 is rotated, and the empty tool pot 34 corresponding to the tool 28 held by the spindle 14 is indexed to the replacement position P.

(8) The arm 45 is swung from the neutral position,
The tool 28 to be newly replaced is located directly below the spindle 14, and at the same time, the tool 28 currently held by the spindle 14 is located directly below the empty tool pot 34 at the replacement position P. At this time, air is jetted from the air nozzle 37 into the empty tool pot 34 at the replacement position P, and the tool 28 and the tool pot 34 are cleaned. Spindle 1
4, the air is jetted from the air passage 31b of the operation shaft 31a, so that the tool 28 and the tool receiving hole 3
0 is cleaned, and chips and the like are prevented from entering the tool receiving hole 30 between the start of replacement and the end of replacement.

(9) The arm 45 is lifted and the tool 28 from the spindle 14 is held in the tool pot 34 at the exchange position P, and at the same time, the tool 28 from the tool pocket 34 is inserted into the tool receiving hole 30 of the spindle 14. Be done. After that, the operating shaft 31a rises and the tool 28 is clamped to the collet chuck 31. (10) The arm 45 is rotated to the standby position.

The tool exchange as described above is carried out by both machining heads 5.
Not only can they be done independently of each other in, but they can also be done concurrently in parallel. Therefore, while one machining head 5 is exchanging tools, not only can the machining operation be continued on the other machining head 5 without interruption, but also both tools can be exchanged at the same time and the same machining operations can be performed simultaneously in parallel. You can also The processing head 5, the tool magazine 9, and the replacement unit 10 may be provided in three or more sets.

[0023]

According to the present invention, since the flat surface area of the dust collecting is increased by the amount of the auxiliary dust collecting passage formed in the ram, the dust collecting efficiency can be improved without increasing the size of the apparatus.

According to the second aspect, chips and the like can be guided to the dust suction passage and the auxiliary dust suction passage by one dust suction hood common to the dust suction passage and the auxiliary dust suction passage.

According to the third aspect, by making the brush movable up and down with respect to the dust suction hood, the brush can be retracted upward when the tool is changed.

[Brief description of drawings]

FIG. 1 is an overall front view of a woodworking router having a dust suction device according to the present invention.

FIG. 2 is a front view of a part of the automatic tool changer of the router.

FIG. 3 is a side view of the above.

FIG. 4 is an enlarged bottom view of the same.

FIG. 5 is a partially cutaway front view of the above.

FIG. 6 is a partially cutaway side view of an example of the dust suction device according to the present invention.

FIG. 7 is a bottom view of the same as above, with a brush omitted.

FIG. 8 is an enlarged sectional view of a part of the above.

[Explanation of symbols]

 5 Processing head 12 Ram 18 Dust collection passage 20 Auxiliary dust collection passage 24 Brush 25 Dust collection hood

Claims (3)

[Scope of utility model registration request] 1. A machining head is held on an ascending / descending ram, a spindle motor for the machining head is provided in a motor hood, and a dust suction passage for sucking chips and the like from a bottom opening is provided between the motor and the motor hood. In the formed dust collector of a woodworking machine, an auxiliary dust collection passage that joins the dust collection passage is formed in the ram. 2. A dust collecting apparatus for a woodworking machine according to claim 1, wherein a dust collecting hood covering the lower surface openings of the dust collecting passage and the auxiliary dust collecting passage is provided at a lower end of the motor hood. 3. A dust suction device for a woodworking machine, wherein a brush is vertically installed so as to be vertically movable on the dust suction hood.