Patent Application
20110113943
1. Field of the Invention
The present invention relates to a laser assisted positioning mechanism, and more particularly to a laser assisted positioning mechanism which can be mounted on a circular saw machine and emit laser to cut materials by aligning with a desired cut line for assisting the cutting operation, reduce its thickness for convenient installation, improve its structural strength, and provide a perfect adjustment function for a laser module.
2. Description of Related Art
Circular saw machines are mainly used in performing efficient cutting operations basing on its rapid and clean cutting characteristics. Circular saw machines are classified into manual circular saw machines in which cut materials are located and circular saws are pushed forward and machine-type circular saw machines in which circular saws are located and cut materials are pushed forward. Before cutting using the two kinds of circular saw machines, desired cut lines are marked on cut materials firstly so that blades of the circular saw machines can move along the desired cut lines. To avoid that the relative movement between the blades of the circular saw machines and the cut materials causes that kerfs depart from the desired cut lines, the circular saw machines can have laser assisted positioning mechanisms disposed thereon for aligning the blades of the circular saw machines along the desired cut lines.
A laser assisted positioning mechanism for a conventional circular saw machine includes a cover, a laser module, a power control, and supply unit fixed in the cover. The power control, supply unit, and the laser module are fixed in the cover and electrically connected with each other to drive the laser module to emit laser. The laser assisted positioning mechanism is fixed in the center of a circular saw associated with the circular saw machine, and when the circular saw works, laser diodes of the laser module emit laser, and through a lens, the laser is focused on and transmitted to a cut material to align a desired cut line for assisting the cutting operation, thereby effectively avoiding the above-mentioned condition that the relative movement between a blade of the circular saw machine and the cut material causes that kerfs depart from the desired cut line.
However, because the cover of the above-mentioned laser assisted positioning mechanism has a great thickness, the laser assisted positioning mechanism becomes larger and thicker, thereby occupying larger space. Further, since the laser assisted positioning mechanism is fixed in the center of the circular saw associated with the circular saw machine, its great thickness interferes with placement of a peripheral shield for the circular saw. In this case, the shield needs to be designed to have a convex portion, corresponding to the laser assisted positioning mechanism, so that the shield must be replaced and remounted, which is inconvenient for installation and increases costs greatly. Besides, the laser module is difficult to be positioned and adjusted, thereby increasing manufacturing costs.
Hence, the inventors of the present invention believe that the shortcomings described above are able to be improved and finally suggest the present invention which is of a reasonable design and is an effective improvement based on deep research and thought.
A main object of the present invention is to provide a laser assisted positioning mechanism which can reduce its thickness to avoid interfering with placement of a peripheral shield for a circular saw when the laser assisted positioning mechanism is fixed in a center of the circular saw associated with a circular saw machine so that the peripheral shield is easily mounted and the costs are reduced.
Another object of the present invention is to provide a laser assisted positioning mechanism which has high structural strength to bear high pressure, ensures that a laser module can be positioned and adjusted easily, and reduces the costs.
To achieve the above-mentioned object, a laser assisted positioning mechanism in accordance with the present invention is provided. The laser assisted positioning mechanism includes a cover which includes a lower cover and an upper cover, in which the lower cover has a hollowing supporting rib formed in a center thereof; a laser module disposed in the cover; a lens disposed on the lower cover of the cover in conjunction with the laser module; an adjusting device which includes an adjusting screw, two fixing screws and a fixing piece, wherein the fixing piece is pressed on the laser module, the two fixing screws respectively pass through two sides of the fixing piece and engage with the cover, and the adjusting screw engages with the fixing piece and has one end abutting against a periphery of the laser module; and a power supply unit disposed in the cover and electrically connected with the laser module.
To further understand features and technical contents of the present invention, please refer to the following detailed description and drawings related the present invention. However, the drawings are only to be used as references and explanations, not to limit the present invention.
Please refer to
The laser module 20 is disposed in the receiving room 14 of the cover 10 in conjunction with the through-hole 15 of the cover 15 and the lens 30, so that the laser from the laser module 20 can be transmitted outwards through the lens 30. The laser module 20 is properly electrically connected with the cell holders 50 so that cells 51 of the cell holders 50 can provide electric power for the laser module 20 to drive a laser diode disposed in the laser module 20 to emit laser.
The lens 30 is a prism. The lens 30 is disposed in the through-hole 15 of the lower cover 11 and located on the lower cover 11 of the cover 10 in conjunction with the laser module 20.
In the embodiment, the adjusting device 40 includes an adjusting screw 41, two fixing screws 42 and a fixing piece 43. The fixing piece 43 is an arc-shaped sheet and is pressed on the laser module 20. The two fixing screws 42 pass through two fixing holes 44 formed in two sides of the fixing piece 43 and engage with the lower cover 11 of the cover 10. The adjusting screw 41 engages with an adjusting hole 45 of the fixing piece 43, and one end of the adjusting screw 41 abuts against the periphery of the laser module 20, adjacent to the rear end of the laser module 20, and the other end thereof extends out of the cover 10, so that the angle of the laser module 20 can be adjusted based on the rotation of the adjusting screw 41, that is, the angle of the laser from the laser module 20 can be adjusted properly.
The cell holders 50 are disposed on the lower cover 11 of the cover 10, and in the embodiment, there are two cell holders 50 disposed on the lower cover 11. The cell holders 50 and the laser module 20 are arranged on the periphery of the supporting rib 16 in the cover 10 at intervals. The cell holders 50 respectively receives the cells 51 and are electrically connected with the laser module 20 to provide power for the laser module 20, thereby establishing a power supply unit. Of course, the present invention does not limit the power supply unit in this structure, but has other types of power supply units. Furthermore, the laser module 20 can be electrically connected with a manual switch 60 and a vibration switch 70 etc so as to control the laser module 20. Basing on the above-mentioned assembly, the laser assisted positioning mechanism is formed.
The laser assisted positioning mechanism can be fixed in the center of the circular saw associated with the circular saw machine (as shown in
The present invention mounts the laser module 20, the lens 30 and the adjusting device 40 on the cover 10 to form the laser assisted positioning mechanism, wherein the supporting rib 16 can improve the structural strength of the cover 10, so the cover 10 can have a thin structure in design and the thickness of the cover 10 can be reduced greatly, thereby ensuring that the laser assisted positioning mechanism does not interfere with placement of a periphery shield of the circular saw when mounted and fixed in the center of the circular saw associated with the circular saw machine, so the shield needn't be replaced and remounted and can be easily installed, such that the costs are reduced.
Additionally, though the present invention has the thin structure in design, the present invention has high structural strength since the thickened supporting rib 16 is helpful to lock the fixing bolt 17 and can bear higher pressure. The laser module 20 can be positioned and adjusted easily via the adjusting device 40 formed by the adjusting screw 41, the fixing screws 42 and the fixing piece 43, thereby reducing the costs.
Consequently, the present invention can solve the problems of conventional laser assisted positioning mechanism for occupying larger space, interfering with the placement of the peripheral shield of the circular saw, and resulting in replacing and remounting the shield as conventional laser assisted positioning mechanism becomes larger and thicker. In other words, it is inconvenient for installation, and the laser module is difficult to be positioned and adjusted and has higher manufacturing costs. The present invention has utility, novelty and non-obviousness, so it meets patent requirements completely, and then is applied for patent. Please examine and grant it to guarantee inventors' rights and interests.
What are disclosed above are only the specification and the drawings of the preferred embodiment of the present invention and it is therefore not intended that the present invention be limited to the particular embodiment disclosed. It will be understood by those skilled in the art that various equivalent changes may be made depending on the specification and the drawings of the present invention without departing from the scope of the present invention.
