JP2941167B2 - Band saw device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band saw device, and more particularly, to a band saw device having a structure for supporting an object to be cut from both sides.
The present invention relates to an automated band saw device that does not need to hold an object at the time of cutting and can be used safely.

[0002]

2. Description of the Related Art As is well known, a band saw device (band saw) is used.
Has a band saw wound around a pair of upper and lower saw wheels, and a substantially horizontal surface plate provided between the saw wheels and provided with a single slit through which the band saw passes. This is a device that cuts the workpiece by mounting it on a board and moving it back and forth. In a band saw device, tension is given to the band saw by a pair of saw wheels, so that the band saw can be formed with a thinner material than a circular saw or the like, and in addition to the advantage that cutting loss can be reduced, Since the workpiece is appropriately moved and positioned as described above, there is an advantage that a desired position can be easily cut.

[0003]

However, in the operation of the above band saw device, the object to be cut must be held on the surface plate during cutting, and the hand is located on the side of the rotating band saw. Very dangerous and requires skill. Moreover, in positioning the workpiece and loading / unloading the workpiece to / from the surface plate, the band saw is always exposed above the surface plate, so that there is a concern that the band saw may be erroneously contacted.

SUMMARY OF THE INVENTION The present invention has been made to secure the safety of a conventional band saw apparatus while making use of the advantages thereof. It is an object of the present invention to provide an automated band saw device that can be used.

[0005]

In order to solve the above-mentioned problems, a band saw device according to the present invention comprises a band saw wound around a pair of upper and lower saw wheels, and the band saw is located between the respective saw wheels and the band saw is provided. A substantially horizontal surface plate provided with a single slit that passes,
In a band saw device for cutting an object mounted on the surface plate by moving the surface plate back and forth, the object to be cut is formed on the surface plate so as to be horizontally movable in a direction perpendicular to the moving direction. A first support plate abutting on one end of the object, and a second support plate configured to be horizontally movable in the same direction as the first support plate and abutting on the other end of the object to be cut, The first support plate and the second support plate are configured to be able to hold a position in contact with an object to be cut when cutting.

[0006]

The first support plate and the second support plate are in contact with the respective ends of the object to be cut on the surface plate to position the object to be cut. And the first support plate and the second support plate.
The support plate is configured to be able to hold the position in contact with the object to be cut at the time of cutting, and does not move, so that the object to be cut is fixed on the surface plate to prevent the band saw from meandering and accurate. Enable cutting.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall external view showing an example of a band saw device according to the present invention. FIG. 2 is an external view of a main part showing an example of a first support plate and a second support plate arranged on a surface plate of the band saw device according to the present invention. FIG. 3 is a plan view in FIG. 2 showing a detailed structure around the surface plate. FIG. 4 is a front view in FIG. 2 showing a detailed structure around the surface plate.

As shown in FIG. 1, the band saw device of the present invention has a band saw (2) wound around a pair of upper and lower saw wheels, and the band saw (2) is located between the respective saw wheels and passes therethrough. A substantially horizontal surface plate (3) provided with a single slit (30), and a device for cutting an object mounted thereon by moving the surface plate (3) back and forth; On the board (3),
A first support plate (4) configured to be horizontally movable in a direction orthogonal to the movement direction and abutting on one end of the object to be cut, and configured to be horizontally movable in the same direction as the first support plate. A second support plate (6) in contact with the other end of the object is provided, and the first support plate (4) and the second support plate (6) are located at positions in contact with the object. Is configured to be held when cutting.

The saw wheels around which the band saw (2) is wound are respectively provided on the upper and lower parts of the body (1) provided with a support.
In the figure, they are accommodated in covers (11) and (12).
Within each saw wheel, the lower saw wheel is rotated by a motor located at the base of the fuselage (1). Also, the upper saw wheel
Usually, the band saw (2) can be moved up and down by rotation of the handle (21), and appropriate tension can be applied to the band saw (2) by adjusting the position of the saw wheel. The band saw (2) is appropriately selected from various conventionally known endless belt-shaped band saws according to the type of the object to be cut. In addition,
Reference numeral (23) in FIG. 2 denotes a steady rest of the band saw (2) provided below the upper saw wheel.

The platen (3) is a rectangular table which reciprocates back and forth, and the slit (30) is cut at substantially the center of the platen along the moving direction. As shown in FIGS. 2 and 4, the support structure of the surface plate (3) includes a linear guide mechanism that substantially supports the weight of the surface plate (3) and moves the surface plate accurately and linearly. That is, the linear guide mechanism is mounted on the back surface of the platen (3) and a pair of parallel rails (16), (16) mounted on the body (1) side, and these rails (16), (16). ) And the sliders (36) and (36).

In the present invention, as shown in FIG. 2, a band saw (2) is provided by providing a movable first support plate (4) and a second support plate (6) on a surface plate (3). ) To prevent meandering and enable accurate cutting. The first support plate (4) is provided slightly away from the surface of the surface plate (3), and is in a direction perpendicular to the direction of movement of the surface plate (3), and is provided on the surface of the surface plate (3). It is configured to move along a surface. The board surface of the first support plate (4) is held substantially perpendicular to the surface of the surface plate (3), that is, substantially perpendicular to the moving direction of the support plate. On the other hand, the second support plate (6) is configured substantially in the same manner as the first support plate (4), and its board surface is opposed to the first support plate (4). The first support plate (4) and the second support plate (6) are operated by independent drive mechanisms, respectively.
Performs positioning of the object to be cut and supports one end thereof, and the second support plate (6) supports the other end of the object to be cut.

As shown in FIG. 3, the drive mechanism of the first support plate (4) mainly comprises a ball screw (42), an arm (45) screwed to the ball screw, and a servomotor (41). Specifically, the ball screw (42)
The bearing (4) is mounted on the surface plate along the front edge of the surface plate (3).
The servomotor (41), which is attached by (3) and (43), and can be rotated forward and backward, is attached near the front edge of the surface plate (3), and its spindle is connected to one end of a ball screw (42). It is connected to. Arm (45)
Is screwed to a ball screw (42) by a screw portion (44) provided at a base end thereof, and the first support plate (4) is attached to a tip end.

As shown in FIG. 3, the driving mechanism of the second support plate (6) includes a slider (62) and a cylinder device (6).
1) and an arm (64). Specifically, a rail (63) is provided on the surface plate along the front edge of the surface plate (3), and a slider (62) is attached to the rail (63). Further, the slider (62) has a surface plate (3) parallel to the rail (63).
The rod end of the cylinder device (61) mounted above is connected. The base end of the arm (64) is fixed to the slider (62), and the above-mentioned second support plate (6) is attached to the end. Note that an air cylinder is usually used as the cylinder device (61).

As shown in FIG. 2, the first support plate (4) and the second support plate (6) are each provided with an auxiliary plate (4).
b) and (6b) may be added. Auxiliary plate (4
b) is attached to a stay (46) rotatably provided at the tip of the arm (45) as shown in FIG. 4, and further, a notch mechanism provided at a pivotal attachment portion of the stay (46).
Further, the stay (46) is configured to be able to be locked directly above the first support plate (4) by a spring mechanism for urging the stay (46) in the axial direction of the arm (45). Similarly, the auxiliary plate (6b) is also attached to a stay (65) rotatably provided at the tip of the arm (65), and the second support plate (6).
It is configured to be able to be locked immediately above. These auxiliary plates (4
b) and (6b) can favorably support both ends of the object having a relatively high height. In addition, as shown in FIG.
Usually, on the surface plate (3), in order to facilitate positioning in the front-rear direction when mounting an object to be cut, a square rod-shaped contact member (5) is provided with a first support plate (4) and a second support plate (4). It is arranged along the moving direction of the support plate (6).

In the band saw device of the present invention, the platen (3)
Can be manually moved back and forth, but usually, a moving mechanism is attached to the surface plate (3), so that the entire cutting process is automated and safety is further enhanced. As shown in FIG. 3, the moving mechanism of the surface plate (3) includes a ball screw (32) provided on the back side of the surface plate (3) and a servomotor (31).
Mainly composed of Specifically, a ball screw (3
2) is attached to a beam (13) which is a part of the fuselage along the moving direction of the surface plate (3) by bearings (33) and (33), and the servomotor (31) is (1
3) is attached to the end and its spindle is connected to one end of the ball screw (32). The ball screw (32) is screwed with a moving element (35) having a screw portion, and the moving element (35) is fixed to the back surface of the surface plate (3).

Further, the ball screw (3
2) is arranged along one edge of the surface plate (3), but in order to uniformly apply the driving force applied to the surface plate (3) by the moving mechanism to the entire surface plate, As shown in FIG. 4, a rack mechanism is provided at the center of the back surface side of the surface plate (3). That is, the rack mechanism is a platen (3)
A horizontal shaft (17) rotatably mounted on the body (1) side in a direction perpendicular to the direction of movement and having gears (18) and (18) provided at both ends, and a back surface of the surface plate (3). A gear (18) mounted along the direction of movement of the platen,
(18) A pair of parallel racks (38), (3)
8).

In the band saw of the present invention, a control device such as a program controller is usually provided in the control panel (7), and the first support plate (4), the second support plate (6) and the base plate are provided. The operation of (3) can be controlled in various patterns. However, the first support plate (4) and the second support plate (6) may be configured to be able to hold the position in contact with the object at the time of cutting in any operation pattern. Importantly, such a configuration prevents the band saw from meandering during cutting and allows for accurate cutting.

Further, when the object to be cut is cut a plurality of times with a predetermined width, the first support plate (4) can be sequentially moved by a predetermined distance in synchronization with the reciprocating movement of the surface plate (3). Is done.
That is, when the operation pattern as described above in the first support plate (4) is stored in the control device in advance, an automatic cutting operation can be performed simply by mounting the workpiece on the surface plate (3). Thus, safety can be saved and labor can be saved.

Further, in the band saw device of the present invention, the sheath member (22) covering the band saw (2) is provided upright at the deep end of the slit (30), that is, near the rear edge of the platen (3). Is preferred. As shown in FIGS. 3 and 4, the sheath member (22) has a cross section formed in, for example, a substantially U-shape and has a band saw (2).
The cover is an elongated cover provided with a gap capable of accommodating therein, and is arranged so as to open to the front edge side of the surface plate (3). Such a sheath-shaped member (22) ensures that when a workpiece is mounted on the surface plate (3) or when the object is lowered from the surface plate (3), there is a danger that a finger or the like may accidentally come into contact with the band saw. Can be prevented and safety can be further enhanced. As shown in FIGS. 1 and 2, operation switches (8) and (8) and an emergency stop switch (9) are disposed below the surface plate (3). From the above viewpoint, the switch is operated by simultaneous operation of the switches (8) and (8).

Next, the operation of the band saw device of the present invention will be described.
A case where dry ice is cut will be described as an example.
When dry ice is manufactured in a factory or the like, it is formed into a substantially cubic mass of about 25 kg, and thus is cut into an appropriate shape such as a thin plate before use.

In the band saw apparatus of the present invention, the platen (3) is initially positioned as shown in FIGS. 1 and 2, and the first support plate (4) is formed as shown in FIGS. As shown in FIG. 4, it is located on one end side (left side in the figure) of the surface plate (3). On the other hand, the second support plate (6) is located substantially at the center of the surface plate (3) with the cylinder device (61) retreated. When cutting cubic dry ice (W ₁ ) into a thin plate having a predetermined thickness, first, dry ice is placed on a surface plate (3) between a first support plate (4) and a second support plate (6). Ice (W ₁ ) is mounted and pressed against the contact member (5).

In this case, as long as the servo motor (31) in the drive device of the surface plate (3) is stopped, the surface plate (3)
Is fixed, and the sheath member (22) erected at the far end of the slit (30) covers the band saw (2), and does not expose the band saw above the platen (3). In the band saw device of the present invention, dry ice (W ₁ ) can be safely mounted.

Next, when the band saw (2) is activated and the switches (8) and (8) are operated to activate the respective drive mechanisms, the servomotor (41) is activated, and the ball screw (42) is rotated and the arm is rotated. (45) moves toward the other end (to the right in the figure) of the surface plate (3). As a result, the first support plate (4) comes into contact with one end of the dry ice (W ₁ ) on the surface plate (3) and presses it to move it to the second support plate (6). At this time, the fluid circuit of the cylinder device (61) is opened on both the forward side and the backward side, and the arm (6) is opened.
4) is movable, and the first support plate (4) is
The second support plate (6) is moved together with the dry ice (W ₁ ) toward the other end (to the right in the drawing) of the surface plate (3). Then, the first support plate (4) stops at a position where the dry ice (W ₁ ) has passed the slit (30) by a predetermined distance. Such a moving distance is determined by the arm (45).
Is controlled by detecting the moving end (start point) of the servo motor (41) with a sensor and calculating the rotation speed of the servo motor (41).

As described above, the first support plate (4) and the second support plate (4)
When the support plate (6) is positioned in the dry ice is performed in a state where each in contact with the dry ice (W _1),
The fluid circuit of the cylinder device (61) is closed on both the forward and backward sides, and the arm (64) is fixed. That is, the position of the first support plate (4) is maintained by the stop of the servomotor (44), and the position of the second support plate (6) is controlled by the fluid circuit of the cylinder device (61). Is closed, the position is maintained.

Next, when the ball screw (32) is rotated by the driving of the servo motor (31) and the platen (3) moves forward along with the moving element (35), the dry ice (W ₁ ) is removed by the band saw (2). ) And cut. At this time, the first support plate (4) and the second support plate (6) are configured to be able to hold the position in contact with the dry ice (W ₁ ) as described above, and move when cutting. Therefore, dry ice (W ₁ ) is fixed on the platen (3) to prevent the band saw from meandering. Therefore, in the band saw device of the present invention, the dry ice (W ₁ ) mounted on the surface plate (3) can be cut linearly and accurately at a predetermined position.

When the platen (3) is fed until the band saw (2) reaches the vicinity of the front edge of the platen (3), the servomotor (31) reverses and the platen (3) is pulled back.
At this time, the first support plate (4) and the second support plate (6)
Holds the position of contact with the dry ice (W ₁ ) at the start of cutting, so that the cut previously formed in the dry ice (W ₁ ) remains as it is. 30) Even in the pullback operation
> The band saw (2) can smoothly pass through the plate, and the platen (3) can be returned to the original position. As described above, the band saw device of the present invention is provided with a structure for supporting dry ice (W ₁ ) from both sides, and it is not necessary to hold dry ice (W ₁ ) at the time of cutting, so that it can be used extremely safely. Can be done.

In the case where the first support plate (4) is configured to be sequentially movable by a predetermined distance in synchronization with the reciprocating movement of the surface plate (3), the first support plate (4) is cut once, as described above. The fluid circuit of the cylinder device (61) is opened on both the forward side and the backward side, so that the arm (64) is movable again. Then, after the dry ice (W ₁ ) is further moved to the other end side (to the right in the drawing) of the surface plate (3) by the movement of the first support plate (4), the first support plate is moved. (4) and the second
The support plate (6) keeps its position again, and the dry ice (W ₁ ) is cut by the reciprocating movement of the platen (3). Thereafter, similarly, it is sequentially moved on the surface plate (3) and cut at a predetermined width. Therefore, according to the above configuration of the present invention, it is possible to automatically cut into thin plates simply by mounting the dry ice (W ₁ ) on the surface plate (3), thereby achieving safety and labor saving.

When the cutting is completed and the moving end (end point) of the arm (45) is detected by the sensor, the servomotor (41) is reversed and the first support plate (4) is at the original position. Returning to one end side (left side in the figure) of (3), at the same time, the cylinder device (61) retreats and the second support plate (6) puts dry ice (W ₁ ) on the platen (3). Move to one end. Thereafter, the second support plate (6) returns to the approximate center of the surface plate (3) which is the original position. Thereby, the cut dry ice (W ₁ ) is released between the first support plate (4) and the second support plate (6). In a state where the surface plate (3) has returned to the front, because the Sayajo member (22) covers the band saw (2) can be safely removed dry ice (W _1).

In the above embodiment, the cutting of dry ice which is low in temperature and heavy and inconvenient to handle is exemplified. However, the band saw apparatus of the present invention is, of course, applicable to various kinds of meat, ham and sausage, fish and the like. It can be suitably used in various applications such as food, wood, resin and other molding materials.

[0030]

As described above, according to the band saw of the present invention, since the structure for supporting the object to be cut is provided from both sides, it is not necessary to hold the object to be cut at the time of cutting, and the device can be used safely. You can do it.

[Brief description of the drawings]

FIG. 1 is an overall external view showing an example of a band saw device according to the present invention.

FIG. 2 is an external view of a main part showing an example of a first support plate and a second support plate disposed on a surface plate of the band saw device according to the present invention.

FIG. 3 is a plan view in FIG. 2 showing a detailed structure around a surface plate.

FIG. 4 is a front view in FIG. 2 showing a detailed structure around a surface plate.

[Explanation of symbols]

 2: Band saw 22: Sheath member 3: Surface plate 30: Slit 4: First support plate 6: Second support plate

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Nagai 1345-1, Tenagawa-Oshima-cho, Maebashi-shi, Gunma Prefecture Sender Co., Ltd. (56) References JP-A-5-154801 (JP, A) 178619 (JP, U) Actually open sho 59-137001 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B27B 13/00 B27B 13/04 B27B 13/10

Claims (3)

(57) [Claims] 1. A band saw wound around a pair of upper and lower saw wheels, and a substantially horizontal surface plate provided between the respective saw wheels and provided with a single slit through which the band saw passes. In a band saw apparatus for cutting an object mounted on the platen by moving the platen back and forth, the surfacen plate is configured to be horizontally movable in a direction orthogonal to the moving direction of the object, A first support plate abutting on one end, and a second support plate configured to be horizontally movable in the same direction as the first support plate and abutting on the other end of the workpiece, are provided; A band saw device, wherein the first support plate and the second support plate are configured to be able to hold a position in contact with an object to be cut when cutting. 2. The band saw device according to claim 1, wherein the first support member is configured to be sequentially movable by a predetermined distance in synchronization with the reciprocating movement of the surface plate. 3. The band saw device according to claim 1, wherein a sheath-like member covering the band saw is provided upright at a deep end of the slit.