Patent Application
20150231748
(1) Fields of the Invention
The present invention relates to a pressing mechanism, and more particularly, to a pressing mechanism for a woodworking machine and the pressing mechanism press the wood board at a horizontal position so as to be cut without generating uneven surfaces.
(2) Descriptions of Related Art
The conventional wood cutting machine is able to cut wood material efficiently within a short period of time so that the cut wood plates or boards are ready to be manufactured to be furniture. It is known that the wood material has to be positioned firmly when being cut so as to have a neat cutting result. However, the wood material has different sizes and shapes before being cut. The wider wood boards can be easily pressed firmly, however, the narrow wood boards are different to be positioned, therefore, there will be uneven surfaces formed on the surface made by the blade, or the sides are not cut as desired. This makes the post processes to be difficult such as the adjacent wood plates or boards cannot be snugly matched to each other. A secondary treatment, such as milling may be required by either way of mechanical or manual way.
When the wood material is fed into the machine and reaches the position beneath the pressing frame 14, the pressing frame 14 is lowered to press the wood material, and the blade cuts the wood material. When cutting the wood material, the pressing frame 14 presses the wood material so allow the blade to cut neatly.
However, the wider wood material can be firmly pressed by the pressing frame 14, but not the narrow wood material because only a portion of the narrow wood material is pressed by the pressing frame 14. After the blade cuts along a pre-set line, the wood material on the inside and on the outside of the pressing frame 14 are not located on the same horizontal plane, and the wood material is not firmly pressed. The uneven surface is formed when the blade cuts through the tilt wood material. A secondary treatment is required by either way of mechanical or manual way. This takes time and increases cost.
The present invention intends to provide a pressing mechanism of a wood cutting machine and improves the shortcomings mentioned above.
The present invention relates to a pressing mechanism for a woodworking machine, and comprises a case having multiple flat boards located therein. Multiple cushions installed to the flat boards. Two buffering boards are pivotably connected beneath the cushions and each have a slot defined in the lower portion at the inside thereof. A pressing frame has two sides thereof engaged with the two slots of the two buffering boards so that the pressing frame is located between the two buffering boards. Two arms are respectively and pivotably connected to two respective outsides of the two buffering boards. Each arm has a pivot connected to the first end thereof and the pivot is pivotably connected to the case. Each arm has a pressing bar connected to the second end thereof. The pressing bar is pivotably connected to the buffering board corresponding thereto. Each of the arms is pivotable about the pivot and the pressing bar is movable with the arm. Two separation boards are located on two respective tops of the buffering boards. The pressing bar is movable with the arm so as to balance the left and right sides of the pressing frame to securely press the wood material to be cut.
The primary object of the present invention is to provide a pressing mechanism for a woodworking machine by using the pressing bar movable with the arm so as to balance the left and right sides of the pressing frame. The pressing frame presses the wood material to be cut horizontally so that no uneven surfaces are formed on the surface.
Another object of the present invention is to provide a pressing mechanism for a woodworking machine wherein the narrow wood plates can also be firmly pressed when being cut.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
Two arms 26 are respectively and pivotably connected to two respective outsides of the two buffering boards 22. Each arm 26 has a pivot 27 connected to the first end thereof and the pivot 27 is pivotably connected to the case 21. Two first rings 261 are formed on the first end of each of the arms 26 and the two first rings 261 are fixed to the walls 203 of the case 21. The pivot 27 extends through the two first rings 261. Therefore, the arm 26 can be pivoted about the pivot 27. Each arm 26 has two holes 262 defined in the second end thereof. A pressing bar 28 extends through the two holes 262. The pressing bars 28 are pivotably connected to the buffering boards 22 respectively. Each of the arms 26 is pivotable about the pivot 27 and the pressing bar 28 is movable with the arm 26. The buffering boards 22 each have two second rings 223 on two sides thereof and the pressing bar 28 extends through the two second rings 223.
When in operation, the wood material is sent into the wood cutting machine 20 from the entrance of the case 21. The wood material is moved to a position beneath the pressing frame 24, and the pressing frame 24 is then lowered to press the wood material. The blade cuts the wood material which is pressed firmly by the pressing frame 24 so that the cutting result is satisfied. If the wood material is narrow and only the inside of the pressing frame 24 presses on the wood material, but the pressing bars 28 make the left and right sides of the pressing frame 24 to be located on the same horizontal plane, so that the narrow wood material is pressed properly. Even the wood material leaves from the blade, the wood material still pressed properly by the pressing frame 24. Therefore, uneven surfaces can be avoided after being cut.
Bu the pressing bars 28 synchronically moved its the left and right sides, the pressing frame 24 firmly presses the narrow wood material and the wood material is cut without uneven surfaces formed. Therefore, there will be no need to proceed secondary treatments.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
