JP2818463B2 - Band sawing machine with automatic band saw blade changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a band sawing machine with an automatic band sawing blade exchanging device provided with an automatic band sawing blade exchanging device in a band sawing machine such as a rigid band sawing machine.

(Prior art) Conventionally, in a rigid band sawing machine as an example of a band sawing machine,
Replacing and attaching a band saw blade to the saw blade housing of a rigid band saw machine has been done manually. There is no saw blade storage device for storing the band saw blade near the saw blade housing.

(Problems to be Solved by the Invention) As described above, since the attachment and replacement of the band saw blade have been conventionally performed manually, there has been a problem that the attachment and replacement of the band saw blade are troublesome. Since the band saw blade could not be stored near the saw blade housing, there was a problem that it took more time than necessary to replace the band saw blade.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a band sawing machine with an automatic band sawing blade changing device which can automatically and quickly replace a band sawing blade in order to solve the above-mentioned problem.

[Means for Solving the Problems] To achieve the above object, the present invention provides a drive wheel for winding an endless band saw blade, a driven wheel, and a work to be cut. A band sawing machine having a movable saw blade housing, a magazine storage device for storing a plurality of magazines for holding the band saw blade near the saw blade housing, and the band saw blade at a front side of the saw blade housing. A band is movably provided between the exchange position and the magazine storage device, and the band saw blade held by the magazine at the band saw blade exchange position is wound around the drive of the saw blade housing, the driven wheel or the drive of the saw blade housing, around the driven wheel. The band saw blade exchanging device provided with a saw blade handling unit for attaching and removing the turned band saw blade to the magazine is provided in the saw blade housing. To constitute a band saw blade autochanger with band saw it provided to freely move forward.

Further, in this band sawing machine with an automatic band saw blade changing device, it is desirable that the saw blade guide provided in the saw blade housing is rotatably provided in order to set a twist-free position at the time of band saw blade replacement.

Alternatively, in the band sawing machine with the automatic band saw blade changing device, it is preferable that the saw blade guide provided in the saw blade housing is provided so as to be movable so as not to interfere with the saw blade handling portion at the time of band saw blade replacement.

Furthermore, in this band sawing machine with a band saw blade automatic exchange device,
It is desirable that a detection device be provided on the saw blade housing to check whether the band saw blade is mounted on the driving and driven wheels of the saw blade housing.

(Operation) By employing the band sawing machine with the automatic band sawing blade changing device of the present invention, when replacing the band sawing blade wound around the driving wheel and the driven wheel provided on the saw blade housing in the band sawing machine, a magazine is used. The magazine in which the band saw blade which is an empty magazine provided in the storage device is not held is moved to the band saw blade replacement position facing the drive wheel and the driven wheel.

Next, the band saw blade exchanging device having the saw blade handling section is moved in a direction approaching the saw blade housing, and the band saw blade wound between the driving wheel and the driven wheel is pinched and retracted by the saw blade handling section. Is stored in a magazine and held. As a result, the band saw blade wound around the driving and driven wheels is removed.

Thereafter, the magazine storing the band saw blade and the magazine holding the predetermined band saw blade are exchanged between the magazine storage device and the band saw blade replacement position. Move the automatic band saw blade changing device to the saw blade housing side and drive it from the specified magazine.
A new band saw blade is attached to the driven wheel.

When automatically changing the band saw blade, the saw blade guide is turned to position the saw blade guide at a position without twist, and the saw blade guide is moved, so that the saw blade guide does not interfere with the handling part Installation and removal are performed. Further, by the detection device provided in the saw blade housing,
It is confirmed whether the band saw blade is attached to the driving and driven wheels.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 1 to 3, a rigid band saw machine 1 as an example of a band saw machine includes a work transfer device 3 for supporting and transferring a work W, and a C-shaped saw blade housing 5. .

The work transfer device 3 is provided with a transfer table 7,
Work W moves from left to right as indicated by the arrow X in FIG.
Is transported, and a fixed vise 9 is provided in front of the transport table 7.
A feed vise 11 is provided adjacent to the fixed vise 9 so as to be movable in the left-right direction in FIG. In FIG. 2, the position of the feed vise 11 indicated by a two-dot chain line indicates a movement limit. Furthermore,
A chip conveyor 13 is provided on the rear side (the left side in FIG. 2) of the work transfer device 3, and a shelf-like table 15 for mounting products is provided on the front side.

On the other hand, the saw blade housing 5 is provided so as to be movable in a direction orthogonal to the work transfer device 3, that is, in a front-rear direction which is a cutting direction indicated by a Y arrow in FIG. The saw blade housing 5 rotatably supports a drive wheel 19 and a driven wheel 21 that are connected to a drive motor 17. An endless band saw blade T is wound around the drive wheel 19 and the driven wheel 21. Turned. In order to tension or loosen the band saw blade T, the driven wheel 21 can move up and down by a small amount through known means.

As shown in FIGS. 5 and 6, a pair of saw blade guides is provided on the saw blade housing 5 so that the tip of the band saw blade T in the cutting area is directed forward or leftward. 23A and 23B are provided rotatably. This saw blade guide 23
A and 23B can be appropriately switched between an unclamped state and a semi-clamped state (a state in which the band saw blade T in the cutting area is relatively not bent and the band saw blade T can appropriately travel). Things. The saw guide 23A provided on the lower side
Is fixed in the vertical direction, and the saw blade guide 23B provided on the upper side can be adjusted in the vertical direction.

With the above configuration, when cutting the work W in the front-rear direction, the work W is projected by the feed vise 11 with respect to the cutting line (Y direction in FIG. 2) of the band saw blade T, Is fixed. Then, the saw blade guides 23A and 23B in the semi-clamped state are rotated so that the tooth tips face forward. Subsequently, the drive motor 17 is driven to rotate the drive wheel 19 and the driven wheel 21 so that the band saw blade T
And the saw blade housing 5 is moved forward. Thus, a desired cutting process can be performed on the work W in the front-rear direction.

When cutting the work W in the left-right direction, the tooth tips are directed to the left without rotating the saw blade guides 23A and 23B in the semi-clamped state. Then, the band saw blade T is moved to position the workpiece at a predetermined position, and the feed vise 11 is moved. Thus, a desired cutting process can be performed on the work W in the left-right direction.

In order to replace the band saw blade T, a magazine storage device 25 is provided near the saw blade housing 5.

As for the details of the magazine storage device 25, a housing 27 as a storage portion is provided on the front surface of the saw blade housing 5, and inside the housing 27, upper and lower portions are provided with rails 31T and 31B for the magazine 29A and for the magazine 29B, respectively. Rails 33T, 3
3B are integrally provided in parallel. Rail 31T, 31B; 33
Magazines 29A and 29B, which are movable in the left and right directions (up and down directions in FIG. 2 and left and right directions in FIG. 3), are provided on T and 33B. Engaged.

At the upper parts of the magazines 29A and 29B, a locking part 37 is provided so as to protrude. The locking part 37 is connected to a chain 41 wound around a plurality of sprockets 39 provided at the upper lower surface of the housing 27. A magazine exchange motor 43 is connected to one sprocket 39 around which the chain 41 is wound.

With the above configuration, when the magazine exchange motor 43 is driven, the magazine 29A and the magazine 29B locked to the chain 41 are moved.
Move in opposite directions. For example, the magazine 29A is an empty magazine in which the band saw blade T is not stored, and the magazine 29A is a magazine.
29B assumes that the band saw blade T to be replaced is stored.
At this time, the magazine replacement motor 43 is rotated forward, the magazine 29A is driven, and the magazine 29A is positioned at the band saw blade replacement position facing the driven wheels 19 and 21, the magazine 29B is in the standby position, and the new band saw blade T is moved to the saw blade housing. When the magazine is mounted on the magazine 5, the magazine replacement motor 43 is rotated in the reverse direction, and the magazine 29 is rotated.
Drive B is positioned at the band saw blade replacement position facing the driven wheels 19 and 21.

Each of the magazines 29A and 29B is provided with a push plate 47 formed with a semicircular portion 45 for holding the band saw blade T so as to be vertically movable up and down, and can be vertically moved by a cylinder 49 connected to the push plate 47.

According to the above configuration, when the cylinder 49 is operated in the storage direction, the interval between the upper and lower push plates 47 is reduced, and the band saw blade T is pushed.
When the cylinder 49 is operated in the projecting direction, the band saw blade T inserted into the push plate 47 can be securely held by the semicircular portion 45 provided on the push plate 47.

A saw blade housing 51, which is an automatic band saw blade changing device that is movable to a band saw changing position facing the driving and driven wheels 19 and 21, is provided substantially at the front center of the housing 27. The saw blade hand body 53 of the saw blade hand 51 has a drive,
A saw blade handling section 55 for holding the band saw blade T wound around the driven wheels 19 and 21 or for holding the band saw blade T housed in the magazine 29B as a new band saw blade T.
Are provided at four corners so as to be vertically movable.

The number of the saw blade handling parts 55 is not limited to the one shown in the drawing, and the structure is formed by using a known means, for example, a fixed clamper and a movable clamper that can be protruded by the action of a cylinder. Alternatively, a clamp means provided with an electromagnetic magnet or a clamp means biased by a spring or the like may be used, and a detailed description thereof will be omitted.

The saw blade hand body 53 is guided by a plurality of guide shafts 61 inserted into a boss 59 provided in the housing 27,
It is provided so as to be able to move forward and backward (in the horizontal direction in FIG. 2). In order to move the saw blade hand body 53 forward and backward, a shaft 65 is rotatably mounted on a bearing 63 provided on the housing 27. A cylinder arm 67 is fixed to one of the shafts 65, and a hand body arm 69 is locked to the other.
71 piston rods 73 are connected.

A long hole 75 is drilled at the tip of the hand body arm 69,
A pin 79 provided on a bracket 77 of the saw blade hand main body 53 is engaged with the elongated hole 75. In addition, when the saw blade hand body 53 moves horizontally forward and backward, the long hole 75 forms a long hole as a relief during the movement because the hand body arm 69 performs an arc movement. A bracket 81 is provided at the lower part of a support plate 57 having four corners 55, and a piston rod 85 of a cylinder 83 is connected and linked to the bracket 81, and the cylinder 83 is provided on a bracket 87 which is suspended from the saw blade hand body 53. Have been.

With the above configuration, the saw blade hand main body 53 can be moved forward and backward by operating the cylinder 71, and the support plate 57 provided with the saw blade handling portion 55 can be moved up and down with respect to the saw blade hand main body 53 by operating the cylinder 83. Can be moved.

On the other hand, as shown in FIG. 4, the band saw blade T is located at the optimum position of the driving and driven wheels 19 and 21 on the saw blade housing 5 side.
A detection device 89 for detecting whether or not the band is mounted, such as a proximity switch, is provided at an appropriate position where the side position of the band saw blade T of the saw blade housing 5 can be detected.

The operation of the present embodiment will be described based on the above configuration.

First, the driving of the saw blade housing 5 and the driven wheels 19, 21
When removing the band saw blade T wound around, the magazine replacement motor 43 is driven to move the empty magazine 29A in which the band saw blade T is not stored to the position A shown in FIG. That is, the empty magazine 29A is positioned at the driving position of the saw blade housing 5, the driving of the driven wheels 19 and 21, and the band saw blade automatic replacement position facing the driven wheels 19 and 21. In addition,
The saw blade housing 5 has been moved to the most return end, which is the band saw blade automatic replacement position.

Next, upper and lower saw blade guides 23A, 23 of the saw blade housing 5
By turning B 90 degrees, the direction of the band saw blade T is directed to the magazine direction. Then, the saw blade guide 23B is moved to the uppermost limit so as to avoid interference with the saw blade handling section 55 of the saw blade hand 51, and to enable the saw blade handling section 55 to securely clamp the band saw blade T.

The saw blade hand 51 opens the saw blade handling section 55 and operates the cylinder 71 to move the saw blade hand body 53 to the saw blade housing 5.
The band saw blade T is gripped by the saw blade handling section 55. Then, the driven wheel 21 is slightly moved to the drive wheel 19 side, and the saw blade guides 23A and 23B are opened.

In this state, the tension of the band saw blade T wound around the drive and driven wheels 19 and 21 becomes loose and can be removed.However, in order to further facilitate the removal, the support plate 57 having the saw blade handling portion 55 is provided. Some amount (about 10m /
m) lower.

Next, the saw blade hand main body 53 is retracted by the operation of the cylinder 71, and the band saw blade T is inserted into the empty magazine 29A. When inserting the band saw blade T in the empty magazine 29A, the cylinder 83 is operated to raise the support plate 57 to the old position.

When the band saw blade T is inserted into the empty magazine 21A, the cylinder 49 is operated to move the push plate 47, the band saw blade T is fixed along the semicircular portion 45, and the saw blade handling portion 55 is opened. Then, the saw blade hand body 53 is retracted to the most advanced end.

Next, the operation for replacing the old and new band saw blades T is started.
That is, the magazine replacement motor 43 is driven to move the magazine 29B equipped with the band saw blade T to the position A in FIG. 3, the saw blade hand main body 53 is advanced and stopped at the magazine 29B position, and the saw blade handling section is stopped. 55 is closed and the band saw blade T is clamped. The cylinder 49 fixing the band saw blade T of the magazine 29B is reduced, the support plate 57 is lowered slightly by the operation of the cylinder 83, and the support plate 57 is lowered slightly by the operation of the cylinder 83. Forward and stop at the forward end. At this band saw blade automatic exchange position, the band saw blade T is mounted on the driving and driven wheels 19 and 21, and raises the support plate 57 to the old position.

On the other hand, on the side of the saw blade housing 5, the saw blade guides 23A, 23B
Is closed, the band saw blade T is clamped, the driven wheel 21 is moved in a direction away from the drive wheel 19, and tension is applied to the band saw blade T. Then, the saw blade handling section 55 is opened, and the saw blade hand main body 53 is retracted to the last position.

The upper and lower saw blade guides 23A and 23B of the saw blade housing 5 are turned to turn the band saw blade T in the cutting direction, and various checking operations are performed while the band saw blade T is driven at the lowest speed. This checking operation means whether the band saw blade T is securely mounted at a predetermined position,
This refers to operations such as checking with the mounting confirmation detecting device 89 and confirming rotation of the driven wheel 21. In addition, magazine
Although not shown, the stop positions of the 29A and 29B and the saw blade hand 51 are detected by a limit switch or a proximity switch or the like, thereby enabling continuous operation to the stop position and the next step.

Thus, the work of replacing the band saw blade T is completed, and the cutting of the work can be started.

As described above, the attachment and replacement of the band saw blade T can be automatically performed mechanically and can be performed in a short time.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, a plurality of magazines are provided in a magazine storage device, the position of each magazine can be freely selected, and a saw holding a band saw blade is provided. Since the blade hand is provided so as to be movable, it is possible to automatically and mechanically change the attachment and detachment of the band saw blade. As a result, the problem that the replacement of the band saw blade is troublesome is solved. Further, since the magazine storage device in which the magazine is stored is provided in the vicinity of the rigid band sawing machine, the mounting and replacement of the band saw blade can be performed in a relatively short time.

[Brief description of the drawings]

FIGS. 1 to 6 show a main part of the present invention, and FIG. 1 is a front view including a partial cross section showing the entire configuration of an automatic band saw blade changing device for a rigid band saw machine and a magazine storage device. Figure 1
FIG. 3 is a side view taken along the line III-III in FIG. 1, FIG. 4 is an explanatory view showing a band saw blade mounting confirmation device, and FIG. 5 is a line VV in FIG. 6 is a sectional view taken along the line VI-VI in FIG. 1 ... rigid band saw machine, 5 ... saw blade housing 19 ... drive wheel, 21 ... driven wheel 23A, 23B ... saw blade guide 25 ... magazine storage device 27 ... housing 29A, 29B ... magazine 51 …… Saw blade hand 55 …… Saw blade handling part 85 …… Detection device for installation confirmation

Claims (4)

(57) [Claims] 1. A band saw machine comprising a drive wheel for winding an endless band saw blade and a driven wheel and having a saw blade housing which moves relative to a workpiece to be cut. A magazine storage device for storing a plurality of magazines holding band saw blades is provided, and the magazine is movably provided between a band saw blade replacement position on the front side of the saw blade housing and the magazine storage device, and the band saw blade replacement position is provided. A band saw provided with a saw blade handling unit for driving the saw blade housing held by the magazine to the saw blade housing, driving the driven wheel or driving the saw blade housing, and attaching and removing the band saw blade wound on the driven wheel to the magazine. A band saw with an automatic band saw blade changing device, wherein a blade changing device is movably provided in front of the saw blade housing. . 2. A band saw blade automatic exchange according to claim 1, wherein the saw blade guide provided on the saw blade housing is pivotably provided so that the saw blade guide is at a position without twist when the band saw blade is exchanged. Saw machine with equipment. 3. A band saw according to claim 1, wherein the saw blade guide provided on the saw blade housing is movably provided so as not to interfere with the saw blade handling portion when the band saw blade is replaced. Band sawing machine with blade changing device. 4. A band saw according to claim 1, wherein a detecting device is provided on said saw blade housing for checking whether or not the band saw blade is mounted on a driving and driven wheel of the saw blade housing. Band saw with automatic blade changer.