TWI569911B - Cutting path marker of circular saw - Google Patents

Description

Sawing and marking mechanism for circular sawing machine

The invention relates to a circular sawing machine, and in particular to a sawing and marking mechanism for a circular sawing machine.

In order to facilitate the operator to cut the workpiece, most of the current circular sawing machines are equipped with a laser light generator, and a laser marking plane formed by the diffusion of the laser beam of the laser light generator forms a laser marking line on the surface of the workpiece, so that The saw blade can be aligned with the cutting line of the workpiece through the laser marking line to ensure good sawing accuracy.

In the process of adjusting the laser module, the common way is to illuminate the light emitting plane formed by the laser beam of the laser module on one side of the saw blade, so that the laser marking line is adjacent to the cutting of the workpiece. Line, at this time the operator can easily cut the workpiece to the wrong size without carefully judging the relative positional relationship between the two. Although the use of two sets of laser light generators can improve the above problems, the two sets of laser light generators are relatively complicated in structure configuration, and need to be individually adjusted in angle, so it takes a lot of time to adjust. Saw cutting precision may also cause relatively large errors.

The main object of the present invention is to provide a sawing and marking mechanism for a circular sawing machine, which has a simple structure and can effectively improve the cutting precision.

In order to achieve the above object, the sawing marking mechanism of the present invention comprises a work table, a saw blade, and a laser module. The workbench is configured to place a workpiece, the saw blade is disposed above the workbench, the laser module is disposed above the saw blade and emits at least one laser beam to the workbench, the laser beam is The saw blade is partially shielded to form a sawing path on the surface of the table, and the width of the sawing path is between 2.8 mm and 3.5 mm. Thereby, the saw blade can perform a sawing operation on the workpiece along the sawing path.

In the first embodiment of the present invention, the distance between the laser module and the saw blade is between 20 mm and 25 mm, and the laser module has a laser light generator. The laser light generator The laser beam is emitted from the worktable, and the width of the laser beam formed on the top edge of the saw blade is between 4.8 mm and 5 mm, and the width of the laser beam formed on the surface of the table is Between 6mm~6.5mm, this can make the sawing road produce the best width.

In the second embodiment of the present invention, the distance between the laser module and the saw blade is between 20 mm and 25 mm, and the laser module has two laser light generators arranged side by side. The two laser light generators respectively emit a laser beam to the workbench, the total width of the two laser beams formed on the top edge of the saw blade is 4 mm to 5 mm, and the two laser beams are at the workbench The total width of the surface is 6mm~6.5mm, which allows the saw to produce the optimum width.

Referring to FIG. 1 , the sawing and marking adjustment mechanism 10 of the first embodiment of the present invention includes a work table 20 , a saw blade 30 , and a laser module 40 .

The table 20 is mainly used to fix a workpiece to be processed.

The saw blade 30 is located above the table 20 and is mounted on a saw arm (not shown). The saw arm is pivotally mounted on the table 20 such that the saw blade 30 can be raised or lowered relative to the table 20 by the saw arm.

The laser module 40 is disposed above the saw blade 30 and has a distance D1 between the saw blade 30 of 20 mm to 25 mm (in which the optimum distance is 20 mm), and the distance D2 from the table 20 is introduced. Between 500mm~520mm (500mm is the best distance). In addition, the laser module 40 has a fixing base 42 and a laser light generator 44. The laser light generator 44 is disposed in the fixing base 42 and emits a laser beam L in the direction of the table 20, and the laser beam L is in the The top edge of the saw blade 30 (i.e., at a position of about 20 mm to 25 mm from the laser module 40) has a width W1 of between 4.8 mm and 5 mm, and is at the surface of the table 20 (i.e., at a distance from the thunder). The width W2 formed by the firing module 40 at a position of about 500 mm to 520 mm is between 6 mm and 6.5 mm. In addition, the laser beam L is partially shielded by the saw blade 30 on the table 20 by the principle of straight traveling light. The surface is shaded, and this shadow forms a sawing path 12 for sawing the saw blade 30. The width W3 of the sawing path 12 is between 2.8 mm and 3.5 mm.

In order to reduce the requirement of the brightness level and the emission angle of the single laser light generator 44, in the second embodiment of the present invention, two sets of laser light generators 44 are disposed side by side in the fixed seat 42 of the laser module 40. As shown in Figures 2 and 3, the laser beams L of the two sets of laser light generators 44 can be adjacent to each other (but not necessarily connected together), so that each of the laser beams L is only The top edge of the saw blade 30 (that is, at a position of about 20 mm to 25 mm from the laser module 40) has a width of 1.5 mm to 2.5 mm, that is, a total width W4 of 4 mm to 5 mm is formed, and is on the workbench. The total width formed by the surface of 20 (i.e., at a position of about 500 mm to 520 mm from the laser module 40) is 6 mm to 6.5 mm, and the shadow sawing path having a width W5 is 3 mm. The same effect as the embodiment. In addition, the laser module 40 has a wave lens 46, and the wave lens 46 is disposed on the path of the two laser beams L, that is, the two laser light generators 44 use the same wave lens 46. The volume of the firing module 40, on the other hand, can also avoid adjusting the two sets of laser light generators 44 separately to ensure the parallelism between the two laser beams L to reduce the difficulty of adjustment.

In summary, the sawing and marking mechanism 10 of the present invention sets the laser module 40 at a specific distance while cooperating with the shielding effect of the saw blade 30 on the laser beam L, so that the laser beam L can be placed on the workbench. 20 Producing a saw 12 having high precision, even if the laser module 40 is affected by an external force and has a slight displacement or a difference in thickness due to the replacement of the saw blade 30, the saw 12 can still maintain a fairly good accuracy. In order to achieve the purpose of improving the precision of sawing.

10‧‧‧ sawing and marking mechanism
12‧‧‧Saw Road
20‧‧‧Workbench
30‧‧‧Saw blade
40‧‧‧Laser module
42‧‧‧ fixed seat
44‧‧‧Laser light generator
L‧‧‧Laser beam
D1, D2‧‧‧ distance
W1~W5‧‧‧Width
46‧‧‧ Wave lenses

Fig. 1 is a schematic view showing the structure of a first embodiment of the present invention. Fig. 2 is a schematic view showing the structure of a second embodiment of the present invention. Fig. 3 is a perspective view of a laser module according to a second embodiment of the present invention.

10‧‧‧ sawing and marking mechanism

12‧‧‧Saw Road

20‧‧‧Workbench

30‧‧‧Saw blade

40‧‧‧Laser module

42‧‧‧ fixed seat

44‧‧‧Laser light generator

L‧‧‧Laser beam

D1, D2‧‧‧ distance

W1~W5‧‧‧Width

46‧‧‧ Wave lenses

Claims (6)

A sawing and marking mechanism for a circular saw machine, comprising: a work table; a saw blade disposed above the work table; and a laser module disposed above the saw blade and facing the work table At least one laser beam is emitted, and the laser beam is partially shielded by the saw blade to form a sawing path on the surface of the table. The width of the sawing path is between 2.8 mm and 3.5 mm. The sawing and marking mechanism for a circular saw machine according to claim 1, wherein the laser module has a laser light generator, and the laser light generator emits the laser beam to the worktable, the laser beam The width formed at the top edge of the saw blade is between 4.8 mm and 5 mm, and the width of the laser beam formed on the surface of the table is between 6 mm and 6.5 mm. The sawing and marking mechanism for a circular saw according to claim 2, wherein a distance between the laser module and the saw blade is between 20 mm and 25 mm. The sawing and marking mechanism for a circular saw machine according to claim 1, wherein the laser module has two laser light generators arranged side by side, and the two laser light generators respectively emit the lightning rod to the worktable The beam has a total width of 4 mm to 5 mm formed on the top edge of the saw blade, and the total width of the two laser beams formed on the surface of the table is 6 mm to 6.5 mm. The sawing route marking mechanism for a circular saw machine according to claim 4, wherein a distance between the laser module and the saw blade is between 20 mm and 25 mm. The sawing route marking mechanism for a circular saw according to claim 5, wherein the laser module further has a wave lens disposed on the path of the two laser beams.