TWI542459B - Fence assembly for a circular saw - Google Patents

Description

Material blocking device for circular sawing machine

The invention relates to a circular sawing machine, in particular to a material blocking device for a circular sawing machine.

A slippery baffle 2 is usually arranged on the table 1 of the circular saw, and the position of the baffle 2 is adjusted for the size of the workpiece 3 before the workpiece is sawed, until the baffle 2 is adjusted to Immediately after the position of the workpiece 3, the baffle 2 is fixed to the table 1, so that the positioning effect can be provided to the workpiece 3 during the sawing process.

However, as shown in FIG. 1, if the size of the workpiece 3 to be sawed is relatively small, the position of the baffle 2 will be adjusted to be close to the saw blade 4 in order to fit the small-sized workpiece 3, so that the saw blade 4 is blocked. The space between the panels 2 becomes very narrow. When the small-sized workpiece 3 is sawed in such a narrow space, not only the operation will cause a certain degree of difficulty to the operator, but also the hand is greatly increased. The risk of cutting the saw blade 4.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a retaining device for a circular saw that can improve ease of operation and sawing safety.

In order to achieve the foregoing object, the retaining device of the present invention comprises a baffle plate and an auxiliary baffle member. The baffle plate is displacably disposed on one of the table saws and has a first main abutment surface and a back main abutment surface a second main abutment surface; the auxiliary material member is movably disposed on the baffle plate and switchable between a first position and a second position when the auxiliary baffle member is in the first position The auxiliary material member abuts one of the first or second main abutment surfaces of the baffle plate, and when the auxiliary material member is in the second position, the auxiliary material member abuts The other of the first or second abutting faces of the baffle plate, and the height of the auxiliary baffle member is less than the height of the baffle plate.

With the above design, the operator can abut the auxiliary blocking member against the first main abutting surface of the baffle or the second main abutting surface of the baffle according to actual needs, so that not only can the same The workpiece to be sawed provides a positioning effect, and because the height of the auxiliary retaining member is smaller than the height of the baffle plate, the space between the baffle plate and one of the saw blades of the circular saw can be increased to enhance the operator. Convenience in operation and reducing the risk of the hand being cut by the saw blade.

Preferably, two arms are disposed between the baffle plate and the auxiliary retaining member, and each of the arms has a first link and a second link pivotally connected to each other, and one end of the first link The baffle is pivotally connected, and one end of the second link is pivotally connected to the auxiliary retaining member. Thereby, the auxiliary blocking member can be inverted between the two positions relative to the baffle plate through the respective arms.

Preferably, the two ends of the baffle plate respectively have a through hole, and the two ends of the auxiliary baffle member are respectively provided with a shaft rod, and each of the shaft rods is axially displaceably disposed in the perforation, and each The shaft sleeve is provided with a positioning sleeve. Thereby, the auxiliary retaining member can be laterally moved between the two positions relative to the baffle plate through the respective shafts, and the positioning effect can be achieved by using the positioning sleeves after the switching position.

"First Embodiment"

10‧‧‧Circular saw

11‧‧‧Workbench

12‧‧‧Saw blade

13‧‧‧Working plane

14‧‧‧ saw slot

15‧‧‧Blocking device

16‧‧‧Workpiece

20‧‧‧Baffle board

22‧‧‧First main abutment

24‧‧‧Second main abutment

30‧‧‧Auxiliary retaining parts

31‧‧‧First auxiliary abutment

32‧‧‧Second auxiliary abutment

33‧‧‧ top surface

34‧‧‧ bottom

35‧‧‧ Arm

36‧‧‧First connecting rod

37‧‧‧Second connecting rod

40‧‧‧Clamping components

P1‧‧‧ first position

P2‧‧‧ second position

"Second embodiment"

17‧‧‧Blocking device

50‧‧‧Baffle board

52‧‧‧First main abutment

54‧‧‧Second main abutment

56‧‧‧Perforation

60‧‧‧Auxiliary retaining parts

61‧‧‧floor

62‧‧‧First board

63‧‧‧Second board

64‧‧‧ shaft

70‧‧‧ positioning sleeve

72‧‧‧ gap

"Third embodiment"

80‧‧‧ shaft

81‧‧‧First buckle

82‧‧‧Second buckle

83‧‧‧fasteners

Figure 1 is a front view of a conventional baffle.

Fig. 2 is a perspective view showing a first embodiment of the present invention.

Fig. 3 is a plan view of the first embodiment of the present invention in cooperation with the workbench, mainly showing that the auxiliary stopper member is located at the first position.

Fig. 4 is a front view of the first embodiment of the present invention in cooperation with the workbench, mainly showing that the auxiliary stopper member is located at the first position.

Figure 5 is similar to Figure 3 and mainly shows that the auxiliary stopper is in the second position.

Figure 6 is similar to Figure 4 and mainly shows that the auxiliary stop member is in the second position.

Figure 7 is a partially exploded perspective view showing a second embodiment of the present invention.

Figure 8 is a plan view of the second embodiment of the present invention in cooperation with the workbench, mainly showing that the auxiliary stopper member is located at the first position.

Figure 9 is a front view of the second embodiment of the present invention in cooperation with the workbench, mainly showing that the auxiliary stopper member is in the first position.

Figure 10 is similar to Figure 8, which mainly shows that the auxiliary stopper is in the second position.

Figure 11 is similar to Figure 9, which mainly shows that the auxiliary stopper is in the second position.

Fig. 12 is a partially exploded perspective view showing a third embodiment of the present invention.

Referring to Figures 3 and 4 again, the circular saw 10 shown mainly includes a table 11 and a saw blade 12 disposed in the table 11. The table 11 has a working plane for supporting the workpiece 16. 13, work plane 13 open A sawing slot 14 is provided for the saw blade 12 to extend. Referring to FIG. 2 again, the retaining device 15 of the first embodiment of the present invention includes a retaining plate 20 and an auxiliary retaining member 30.

The baffle 20 is movably disposed above the table 11 and the baffle 20 can be secured to the table 11 by operating a clamping assembly 40. In addition, the baffle 20 has a first primary abutment surface 22 and a second primary abutment surface 24 opposite the first primary abutment surface 22 for providing a primary positioning effect to the workpiece, respectively.

In this embodiment, the auxiliary retaining member 30 has a first auxiliary abutting surface 31, a second auxiliary abutting surface 32 facing away from the first auxiliary abutting surface 31, and a first auxiliary abutting surface 32. The top surfaces 33 of the second auxiliary abutting surfaces 31, 32, and the bottom surface 34 of the first and second auxiliary abutting surfaces 31, 32 are joined, and the height of the auxiliary retaining member 30 is smaller than the height of the baffle 20. In addition, the auxiliary retaining member 30 is assembled with the baffle 20 by two arms 35. Each arm 35 has a first link 36 and a second link 37, and the first link 36 and the second link The rods 37 are pivotally connected to each other, one end of the first connecting rod 36 is pivotally connected to one end of the baffle 20, and one end of the second connecting rod 37 is pivotally connected to one end of the auxiliary retaining member 30. After the assembly is completed, the auxiliary retaining member 30 can be The flap 20 is turned over between a first position P1 and a second position P2. When the auxiliary stopper 30 is at the first position P1, as shown in FIG. 4, the first stopper 30 is first. The auxiliary abutting surface 31 abuts against the first main abutment surface 22 of the baffle 20, and when the auxiliary baffle 30 is at the second position P2, as shown in FIG. 6, the second auxiliary of the auxiliary retaining member 30 The abutting surface 32 abuts against the second main abutment surface 24 of the baffle 20, and the auxiliary baffle 30 is located at the first position P1 or the second position P2, the auxiliary baffle The bottom surface 34 of the member 30 and the working plane 13 of the table 11 are constantly maintained at a proper predetermined distance, so that the auxiliary baffle plate 30 does not interfere with the working plane 13 when the first position P1 and the second position P2 are switched. As shown in Figures 4 and 6.

It can be seen from the above that when the size of the workpiece 16 to be sawed is small, the fixing state between the retaining plate 20 and the table 11 is first released by the clamping assembly 40, so that the retaining device 15 can be moved according to actual needs. To the left or right side of the saw blade 12, if the retaining device 15 is moved to the left side of the saw blade 12, the auxiliary retaining member 30 needs to be turned to the second position P2, as shown in Figures 5 and 6, to make the auxiliary retaining member After the first auxiliary abutment surface 31 of 30 abuts against the left side of the workpiece 16, the baffle 20 is then fixed to the table 11 by the clamping assembly 40, if the retaining device 15 is moved to the saw blade 12 On the right side, the auxiliary retaining member 30 is turned to the first position P1. As shown in FIGS. 3 and 4, the second auxiliary abutting surface 32 of the auxiliary retaining member 30 abuts against the right side of the workpiece 16. At this time, the retainer 20 can be fixed to the table 11 by using the clamp assembly 40. After the fixing between the retainer 20 and the table 11 is completed, the operator can operate the saw blade 12 to saw the workpiece 16. cut.

On the other hand, the structure of the present invention can vary widely. Referring to FIG. 7, the retaining device 17 of the second embodiment of the present invention includes a retaining plate 50 and an auxiliary retaining member 60.

The structure of the baffle 50 is substantially the same as that of the baffle 20 disclosed in the above embodiment, and has a first main abutment surface 52 and a second main abutment surface 54 facing away from the first main abutment surface 52, mainly The difference is that the two ends of the baffle 50 of the embodiment respectively have a through hole 56 penetrating through the first and second main abutting faces 52, 54.

The height of the auxiliary stopper member 60 is smaller than the height of the stopper plate 50. in In this embodiment, the auxiliary retaining member 60 has a bottom plate 61, a first abutting plate 62, and a second abutting plate 63. The bottom plate 61 is interposed between the working plane 13 of the table 11 and the bottom surface of the baffle 50. Between and between the working plane 13 of the table 11 is maintained at a suitable predetermined distance (as shown in FIG. 9), the first and second abutting plates 62, 63 are vertically connected to opposite sides of the bottom plate 61, and Two shafts 64 are disposed between the first and second abutting plates 62 and 63. The shafts 64 are axially displaceably disposed in the through holes 56 of the baffle 50, thereby assisting the retaining member 60. The material can be moved laterally relative to the baffle plate 50 between a first position P1 and a second position P2. When the auxiliary baffle member 60 is at the first position P1, as shown in FIG. 9, the auxiliary baffle member 60 is The inner side of the second abutting plate 63 abuts against the second main abutting surface 54 of the baffle 50. When the auxiliary retaining member 60 is at the second position P2, as shown in FIG. 11, the auxiliary retaining member 60 The inner side of the first abutment plate 62 abuts against the first main abutment surface 52 of the baffle 50.

On the other hand, in order to position the auxiliary retaining member 60 at the first position P1 or the second position P2, the present invention further provides two positioning sleeves 70. As shown in FIG. 7, each positioning sleeve 70 has a notch 72 and The notch 72 is engaged with the shaft 64, whereby when the auxiliary retaining member 60 is at the first position P1 as shown in FIG. 9, each of the positioning sleeves 70 abuts against the first abutting plate of the auxiliary retaining member 60. 62 is disposed between the first main abutment surface 52 of the baffle 50. When the auxiliary retaining member 60 is at the second position P2 as shown in FIG. 11, each of the positioning sleeves 70 abuts against the auxiliary retaining member 60. The second abutment plate 63 is between the second abutment surface 54 of the baffle plate 50.

If the retaining device 17 moves to the left side of the saw blade 12 in accordance with the position of the workpiece 16, the operator first removes each of the positioning sleeves 70, and then applies a force to push the first abutting plate 62 of the auxiliary retaining member 60 to make the auxiliary gear The material 60 moves to In the second position P2 shown in FIG. 11, even if the second abutting plate 63 of the auxiliary retaining member 60 can abut against the left side of the workpiece 16, the positioning sleeves 70 are then snapped onto the shaft 64. The positioning of the auxiliary retaining member 60 is completed, and finally the fixing between the retaining plate 50 and the table 11 is completed using the clamping assembly 40; conversely, if the retaining device 17 is to be moved to the right side of the saw blade 12, After the positioning sleeves 70 are removed, the second abutting plate 63 of the auxiliary retaining member 60 is urged to move the auxiliary retaining member 60 to the first position P1 as shown in FIG. 9 by assisting The first abutting plate 62 of the retaining member 60 abuts against the right side of the workpiece 16, and then the positioning sleeves 70 are snapped onto the shaft 64 to complete the positioning of the auxiliary retaining member 60, and finally the clamping assembly is used. 40, the baffle 50 is fixed to the table 11.

It should be noted that the positioning manner of the auxiliary retaining member 60 of the embodiment may be different. For example, in the third embodiment shown in FIG. 12, each of the two ends of each shaft 80 has a first When the buckles 81 and the second buckles 82 are respectively engaged with the first buckles 81 of the shaft 80 by the two fasteners 83, the auxiliary stoppers 60 can be positioned at the first position P1. When the fastener 83 is snapped into the second buckle 82 of the shaft 80, the auxiliary stopper 60 is positioned at the second position P2.

In summary, the retaining device 15, 17 of the present invention increases the operating space between the retaining plates 20, 50 and the saw blade 12 by the arrangement of the auxiliary retaining members 30, 60, so that the operator's hand can During the sawing process, the position of the workpiece 16 is adjusted in time without being cut by the saw blade 12, so as to achieve the convenience of lifting operation and the safety of sawing, and additionally by the auxiliary retaining members 30, 60. Switching between two positions P1 and P2 can not only match the workpiece 16 The position that needs to be abutted can also be provided to operators of different dominant hands to increase the practicality of operation.

15‧‧‧Blocking device

20‧‧‧Baffle board

22‧‧‧First main abutment

30‧‧‧Auxiliary retaining parts

32‧‧‧Second auxiliary abutment

33‧‧‧ top surface

34‧‧‧ bottom

35‧‧‧ Arm

36‧‧‧First connecting rod

37‧‧‧Second connecting rod

40‧‧‧Clamping components

Claims (10)

A retaining device for a circular sawing machine, the circular sawing machine comprising a working platform having a working plane, the retaining device comprising: a baffle plate displacably spanning the working table Having a first primary abutment surface and a second primary abutment surface facing the first primary abutment surface; and an auxiliary retaining member movably disposed on the baffle plate and at a first position Switching with a second position, when the auxiliary blocking member is in the first position, the auxiliary blocking member abuts against one of the first or second primary abutting surfaces, when the auxiliary blocking member When in the second position, the auxiliary stopper member abuts against the other of the first or second main abutment surfaces, and the height of the auxiliary stopper member is smaller than the height of the baffle plate. The retaining device for a circular saw according to claim 1, wherein two arms are disposed between the baffle plate and the auxiliary retaining member, and each of the arms has a first link pivotally connected to each other. And a second connecting rod, one end of the first connecting rod is pivotally connected to the baffle plate, and one end of the second connecting rod is pivotally connected to the auxiliary retaining member. The retaining device for a circular saw according to claim 2, wherein the auxiliary retaining member has a first auxiliary abutting surface and a second auxiliary abutting surface facing away from the first auxiliary abutting surface. When the auxiliary retaining member is in the first position, the first auxiliary abutting surface of the auxiliary retaining member abuts against the first main abutting surface of the baffle, and when the auxiliary retaining member is located at the second In the position, the second auxiliary abutting surface of the auxiliary blocking member abuts against the second main abutting surface of the baffle. The retaining device for a circular saw according to claim 3, wherein the auxiliary retaining member is a rectangular body and has a first and second auxiliary abutting surface The bottom surface maintains a predetermined distance between the bottom surface of the auxiliary material member and the working plane of the table. The material-receiving device for a circular saw according to claim 1, wherein the two ends of the baffle have a perforation extending through the first and second main abutting surfaces, and the two ends of the auxiliary retaining member Each of the shafts is provided with an axial rod, and each of the shafts is axially displaceably disposed in the perforations. The retaining device for a circular saw according to claim 5, wherein the auxiliary retaining member has a first abutting plate and a second abutting plate opposite to the first abutting plate, and the auxiliary blocking member When the material member is in the first position, the inner side surface of the second abutting plate of the auxiliary material member abuts against the second main abutting surface of the baffle plate, when the auxiliary material member is in the second position The inner side of the first abutting plate of the auxiliary retaining member abuts against the first main abutting surface of the baffle; each of the shafts is connected between the first and second abutting plates. The retaining device for a circular saw according to claim 6, further comprising two positioning sleeves, each of the positioning sleeves having a notch and detachably engaging the shaft by the notch, when the auxiliary When the retaining member is in the first position, each of the positioning sleeve abuts between the first abutting plate of the auxiliary retaining member and the first abutting surface of the baffle plate, when the auxiliary retaining member is located In the second position, each of the positioning sleeves abuts between the second abutting plate of the auxiliary retaining member and the second abutting surface of the baffle. The retaining device for a circular saw according to claim 6, further comprising two fasteners, wherein each of the two ends of the shaft has a first buckle groove and a second buckle groove, and each fastener member When the card is connected to the first buckle of the shaft, the auxiliary material The member is fixed in the first position, and the auxiliary member is fixed in the second position when each of the fasteners is engaged in the second buckle of the shaft. The retaining device for a circular saw according to claim 6, wherein the auxiliary retaining member further has a bottom plate connecting the first and second abutting plates, wherein the bottom plate is located between the working plane of the working table and A predetermined distance is maintained between the bottom surfaces of the baffle and between the working planes of the table. A retaining device for a circular saw according to claim 1, wherein the auxiliary retaining member maintains a predetermined distance from a working plane of the table.