TWI548501B - A band saw with a protective device - Google Patents

Description

Band saw with protective device

The invention mainly discloses a band saw machine, in particular a band saw machine with a protection device.

The existing band saw machines have a machine table and a saw bow. The top surface of the machine table is provided with a vise. The vise can be used to clamp the work object. The saw bow is pivoted on the top surface of the machine table to make the saw bow The blade can be pivoted relative to the machine, the saw band is provided with a saw band, and the saw band on the side of the saw bow near the machine table is exposed. When the saw bow is pivoted relative to the machine table to make the saw bow close to the machine table, the saw band can be sawed Cut the work on the vise.

However, when the worker performs the sawing operation, the hand may be brought close to the saw band in order to check the work situation or to support the sawed end of the work by hand. If the worker is slightly inadvertent when working, it may be because of the hand. The part is cut too close to the saw band, and even the clothes or gloves on the worker may be caught by the saw band and caught in the band saw machine causing serious injury.

In view of the above-described deficiencies in the conventional structure, the inventors have invented a band saw having a protective device which overcomes all of the disadvantages of the above-described conventional structure.

The main purpose of the band saw machine with the protection device of the present invention is to provide a band saw machine comprising a base, a saw bow and a protection device. The top side of the base is provided with a receiving portion and a clamping portion. The clamping portion has a fixed cymbal and an movable cymbal, and the movable cymbal selectively moves relative to the fixed cymbal to be close to or away from the fixed cymbal. The two ends of the saw arch respectively form a pivoting end and an operating end, and the pivoting end is pivoted at the pivoting end a receiving portion of the pedestal, the sawing bow is formed with a sawing portion between the pivoting end and the operating end, the sawing portion and the clamping portion are opposite to each other, and the sawing bow is further provided with a saw band and a saw band at the sawing portion The protection device comprises a protective cover, an operating member and a fixed sliding block. The two ends of the protective cover respectively form a connecting end and a shielding end, and the protective cover is connected. The end is connected to the operating end of the saw blade, and the shielding end of the protective cover extends to the sawing portion of the saw bow. The protective cover is provided with a connecting passage at the connecting end, and the operating member is connected to the operating end of the sawing bow through the connecting passage. Fixed slider wear Connected to the operating end of the saw blade, the shielding end is provided with two blocking walls, the two blocking walls respectively straddle the two sides of the saw band, because the two blocking walls of the protective cover can shield the saw The two sides of the belt can prevent the saw band from being exposed during the sawing operation, and prevent the worker from cutting the hand due to the accidental operation of the hand near the saw band.

Other objects, advantages and novel features of the invention will become apparent from the description and appended claims.

The technology, means and functions of the present invention are described in detail with reference to the accompanying drawings.

1 to 3, a perspective view, an exploded perspective view, and a front view of a band saw having a protection device according to the present invention. The band saw machine 10 of the present invention includes a base 20, a saw bow 30 and a protection device 40;

The top side of the base 20 is provided with a receiving portion 21 and a clamping portion 22. The clamping portion 22 has a fixed jaw 221 and a movable jaw 222. The movable jaw 222 is selectively movable relative to the fixed jaw 221 Close to or away from the fixed jaw 221 .

The two ends of the saw 30 are respectively formed with a pivoting end 31 and an operating end 32. The pivoting end 31 is pivotally mounted on the receiving portion 21 of the base 20, so that the sawing bow 30 can pivot relative to the base 20. The operating end 32 is capable of being held by the user. The sawing bow 30 is further formed with a sawing portion 33 between the pivoting end 31 and the operating end 32. The sawing portion 33 and the clamping portion 22 are opposite to each other. When the sawing bow 30 rotates relative to the base 20 The sawing portion 33 can be brought closer to or away from the clamping portion 22.

The saw blade 30 is further provided with a saw band 34 at the sawing portion 33. The saw band 34 extends in a straight line between the pivot end 31 and the operating end 32. The operating end 32 of the saw 30 is further provided with a sliding slot 321 and an abutting plane 322. The extending direction of the sliding slot 321 is parallel to the extending direction of the sawing strip 34. The abutting plane 322 extends in the direction of the plumb bob. . The operating end 32 of the saw bow 30 is also slidably provided with a stabilizing seat 323 that is selectively slidable relative to the saw band 34 in the direction of extension of the saw band 34.

The protection device 40 includes a protective cover 41, an operating member 42 and a fixed sliding block 43. The two ends of the protective cover 41 respectively form a connecting end 411 and a shielding end 412. The connecting end 411 of the protective cover 41 is connected. The operating end 32 of the sawing bow 30, and the connecting end 411 abuts against the abutting plane 322 of the sawing bow 30, so that the protective cover 41 can move relative to the sawing bow 30 along the extending direction of the abutting plane 322. The shield end 412 of the shield 41 extends to the saw cut 33 of the saw bow 30. The protective cover 41 is provided with a connecting passage 413 at the connecting end 411. The connecting passage 413 includes a first section 414 and a second section 415. The first section 414 extends in a straight line direction, and the second section 415 is The first section 414 and the second section 415 are in communication with each other such that the connecting passage 413 has a J shape.

The distance between the two ends of the first segment 414 of the connecting channel 413 forms a slip length L. The second segment 415 of the connecting channel 413 has a virtual center O, the virtual center O is located in the first segment 414, and the connecting channel 413 is second. The segment 415 has a radius of curvature R, and the radius of curvature R is smaller than the slip length L. The virtual center O of the second segment 415 of the connecting channel 413 and the second segment 415 are both located at the two ends of the first segment 414 of the connecting channel 413. between.

The shielding end 412 is provided with two blocking walls 416 which are respectively spanned on both sides of the saw band 34. The protective device 40 is further provided with an extending member 44 at the shielding end 412 of the protective cover 41. The extending member 44 is respectively provided with an extending wall 441 on both sides thereof, and the two extending walls 441 are respectively disposed on the sawing band. The two sides of the extension wall 441 are located on the side of the blocking wall 416 away from the saw band 34. The top side of the extension member 44 is further provided with a long slot 442 and a positioning member 443. The positioning member 443 passes through The slot 442 is then operatively coupled to the shield end 412 of the shield 41 to enable the extension 44 to move relative to the shield 41 in the direction of extension of the saw strap 34.

One end of the operating member 42 is connected to the operating end 32 of the sawing bow 30. The operating member 42 is located in the sliding slot 321 and is connected to the stabilizing seat 323. The connecting end 413 is connected to the operating end 32 of the sawing bow 30, and the fixed sliding block 43 is located at an end of the sliding slot 321 near the pivoting end 31 of the sawing bow 30. The operating member 42 is movable in the sliding groove 321 relative to the sawing bow 30, and the protective cover 41 is movable relative to the operating member 42 and the fixed slider 43.

Please refer to FIG. 4 and FIG. 5 for further use of the band saw machine with the protection device of the present invention. When the band saw 10 is in use, the work object 90 needs to be clamped to the clamping portion 22 of the base 20, because the movable jaw 222 can be moved relative to the fixed jaw 221 for the user to hold various sizes. Work item 90. After the work object 90 is clamped, the shield 41 can be moved relative to the saw bow 30 to bring the shield end 412 of the shield 41 toward the workpiece 90 (as shown in FIG. 4). Subsequently, the operating end 32 of the sawing bow 30 can be operated such that the sawing portion 33 of the sawing bow 30 approaches the direction of the clamping portion 22 of the base 20, that is, the sawing operation can be performed.

Since the two barrier walls 416 of the shield 41 can shield both sides of the saw band 34, the saw band 34 can be prevented from being exposed during the sawing operation (as shown in FIG. 5), preventing the worker from operating. The hand is inadvertently brought close to the saw band 34 to cause a cut, and since the operating member 42 can move relative to the saw bow 30 in the sliding groove 321, the user can conveniently perform the work of adjusting the position of the protective cover 41.

Please refer to FIG. 6 and FIG. 7 for the use state of the sawing machine with the protection device for sawing large-sized work. Since the operating member 42 can move relative to the saw blade 30 in the sliding slot 321, when the size of the working object 90 is large, the operating member 42 can be moved to the second section 415 of the connecting passage 413 from the fixed sliding block 43. At the radius of curvature R, the shield 41 is moved to align the virtual center O of the second section 415 of the connecting passage 413 with the operating member 42, and the second section 415 of the connecting passage 413 is aligned with the fixed slider 43. At this time, the protective cover 41 is turned over, that is, the protective cover 41 can be pivoted relative to the saw bow 30 with the virtual center O as a center point, and the shielding end 412 of the protective cover 41 is disengaged from the saw band 34 (as shown in the figure). 6)). Since the shielding end 412 of the protective cover 41 can be detached from the saw band 34, the saw band 34 can be completely exposed, facilitating the worker to process the large-sized work object 90.

Please refer to FIG. 8 and FIG. 9 for the use state of the sawing machine with the protection device for sawing small-sized work. If the worker wants to machine the small-sized work object 90, the extension member 44 can be operated to move relative to the shield 41 along the extending direction of the saw band 34, so that the extension member 44 is close to the work object 90. The band saw machine 10 When the processing is performed, the extension member 44 can shield the portion of the saw band 34 closest to the work object 90, so that the saw band 34 is shielded at the portion where the sawing work is not performed, thereby ensuring the operator's operation when the band saw machine 10 is operated. Safety.

As far as the above is concerned, it can be concluded that the present invention has the following advantages:

1. The band saw machine having the protection device of the present invention, wherein the band saw machine comprises a base, a saw bow and a protection device, and the top side of the base is provided with a receiving portion and a clamping portion, the clamping portion The utility model has a fixed cymbal and an movable cymbal, and the movable 颚 selectively moves relative to the fixed 颚, and the two ends of the saw bow respectively form a pivoting end and an operating end, and the pivoting end is pivoted on the pedestal a receiving portion, the sawing bow is further formed with a sawing portion between the pivoting end and the operating end, the sawing portion and the clamping portion are opposite to each other, the sawing bow is further provided with a saw band in the sawing portion, and the saw is brought to the pivoting The protective device includes a protective cover, an operating member and a fixed sliding block. The two ends of the protective cover respectively form a connecting end and a shielding end, and the connecting end of the protective cover is connected to the connecting end of the protective cover. The operating end of the saw blade extends, and the shielding end of the protective cover extends to the sawing portion of the saw bow. The protective cover is provided with a connecting passage at the connecting end, and the operating member is connected to the operating end of the sawing bow through the connecting passage, and the fixed sliding block Connected through the connecting channel The operating end of the bow is provided with two blocking walls, and the two blocking walls respectively straddle the two sides of the saw band, because the two blocking walls of the protective cover can shield both sides of the saw band, Prevent the saw band from being exposed during the sawing operation, preventing the worker from cutting the hand due to inadvertent handling of the hand near the saw band.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so that the numerical value is changed or the equivalent element is replaced, or the equivalent of the scope of the patent application of the present invention. Changes and modifications are still within the scope of the invention patent.

10‧‧‧ Band saw
20‧‧‧ Pedestal
21‧‧‧Acceptance Department
22‧‧‧Clamping Department
221‧‧‧fixed
222‧‧‧ Activities颚
30‧‧‧Saw bow
31‧‧‧ pivot end
32‧‧‧Operator
321‧‧‧ chute
322‧‧‧Abutment plane
323‧‧‧Standing Block
33‧‧‧ sawing department
34‧‧‧Saw band
40‧‧‧protection device
41‧‧‧ protective cover
411‧‧‧Connected end
412‧‧‧Shielding end
413‧‧‧ even channel
414‧‧‧ first paragraph
415‧‧‧ second paragraph
416‧‧‧Block wall
42‧‧‧Operating parts
43‧‧‧Fixed slider
44‧‧‧Extensions
441‧‧‧Extended wall
442‧‧ long slot
443‧‧‧ Positioning parts
90‧‧‧Works
L‧‧‧ slip length
O‧‧‧ virtual center
R‧‧‧ radius of curvature

Figure 1 is a perspective view of a band saw machine having a protective device of the present invention. 2 is an exploded perspective view of the band saw protection device with the protection device of the present invention. Figure 3 is a front elevational view of the band saw machine with the protection device of the present invention. Fig. 4 is a view showing the state of use of the band saw having the protection device of the present invention. Fig. 5 is a view showing the state of use of the band saw having the protection device of the present invention. Fig. 6 is a view showing the state of use of a sawing machine with a protective device for sawing a large-sized work piece according to the present invention. Fig. 7 is a view showing the state of use of a sawing machine with a protective device for sawing a large-sized work piece according to the present invention. Fig. 8 is a view showing the state of use of a sawing machine having a protective device for sawing a small-sized work object according to the present invention. Fig. 9 is a view showing the state of use of a sawing machine having a protective device for sawing a small-sized work object according to the present invention.

10‧‧‧ Band saw

20‧‧‧ Pedestal

21‧‧‧Acceptance Department

22‧‧‧Clamping Department

30‧‧‧Saw bow

31‧‧‧ pivot end

32‧‧‧Operator

33‧‧‧ sawing department

34‧‧‧Saw band

40‧‧‧protection device

41‧‧‧ protective cover

411‧‧‧Connected end

413‧‧‧ even channel

42‧‧‧Operating parts

43‧‧‧Fixed slider

44‧‧‧Extensions

441‧‧‧Extended wall

Claims (8)

A band saw machine with a protection device includes: a base having a receiving portion and a clamping portion on a top side thereof, the clamping portion having a fixed jaw and an movable jaw, the movable jaw Selectively moving closer to or away from the fixed jaw relative to the fixed jaw; a sawing bow, the two ends of the saw bow respectively forming a pivoting end and an operating end, the pivoting end pivoting at the receiving portion of the base The sawing bow is further formed with a sawing portion between the pivoting end and the operating end, the sawing portion and the clamping portion are opposite to each other, and the sawing bow is further provided with a saw band at the sawing portion, the saw band Extending in a straight line between the pivoting end and the operating end; a protection device comprising a protective cover, an operating member and a fixed sliding block, the two ends of the protective cover respectively forming a connecting end a shielding end, the connecting end of the protective cover is connected to the operating end of the sawing bow, and the shielding end of the protective cover extends to the sawing portion of the sawing bow, the protective cover is provided with a connecting passage at the connecting end, The connecting channel includes a first segment and a In the second stage, the first section extends in a straight line direction, the second section is in an arc shape, the first section and the second section are in communication with each other, and one end of the operating member passes through the connecting passage and is connected to the operating end of the saw bow One end of the fixed sliding block is connected to the operating end of the sawing arch through the connecting passage, and the shielding end is provided with two blocking walls, and the two blocking walls respectively straddle the two sides of the sawing band. The band saw machine with protection device according to claim 1, wherein the distance between the two ends of the first section of the connecting channel forms a slip length, and the second section of the connecting channel has a virtual center, the virtual center is located in the first segment The second section of the connecting channel has a radius of curvature that is less than the slip length. A band saw having a protection device according to claim 2, wherein the virtual center of the second segment of the connecting channel and the second segment are located between both ends of the first segment of the connecting channel. A band saw having a protection device according to claim 3, wherein the connecting passage has a J-shape. A band saw having a protection device according to any one of claims 1 to 4, wherein the operating end of the saw blade is further provided with a sliding groove extending in a direction parallel to the extending direction of the saw band The operating member is located in the sliding slot, and the fixing slider is located at an end of the sliding slot near the pivotal end of the saw blade. The band saw machine with a protection device according to claim 5, wherein the operating end of the saw blade is further slidably provided with a stabilizer seat, and the stabilizer seat selectively slides relative to the saw band along the extending direction of the saw band. One end of the operating member in the sliding slot is connected to the stabilizing seat. A band saw having a protection device according to any one of claims 1 to 4, wherein the protection device is further provided with an extension member at the shielding end of the shield, and an extension wall is respectively provided on both sides of the extension member. The two extension walls are respectively disposed on two sides of the saw band, and the extension wall is located on a side of the barrier wall away from the saw band, and the top side of the extension member is further provided with a long groove and a positioning The positioning member passes through the long slot and is connected to the shielding end of the shield. A band saw having a protection device according to any one of claims 1 to 4, wherein the operating end of the saw blade is further provided with an abutting plane extending in a plumb direction, the shield The connecting end abuts against the abutment plane of the saw bow.