BACKGROUND OF INVENTION
(1) Field of the Invention
The present invention relates generally to an upstanding grinding axle, and more particularly to a structure which can provide positioning function to the rotary axle for the convenience of assembly/disassembly for replacement or cleaning during the grinding process, in order to make the assembling/disassembling process more convenient and improve the grinding efficiency.
(2) Description of the Prior Art
Conventional upstanding grinders, as shown in FIGS. 4 and 5, which comprising a working table (11) affixed to the entire machine base (10), a rotary axle (13) protruding from the center of the grinding base (12), and a grinding axle (14) fastened to the center of the rotary axle, so that the sand belt on the grinding axle (14) could carry out grinding quickly. On the overall design, because the sand belt on the grinding axle (14) is considered a frequent consumable product, it needs to be removed from the grinding axle (14) for cleaning or replacement; however, because the grinding axle (14) is located at the center of the working table (11), its rotary axle (13) is confined by the working table (11), so that the assembly/disassembly of grinding axle (14) requires clamping the thread of screw (15) manually with one hand to stop the rotation of the entire rotary axle (13), and rotation the hexagonal axle (16) by the wrench with another hand to rotate the grinding axle (14) for removal or replacement. Because of limited operating space, operators need to hold tools in both hands for assembly/disassembly, which is awkward, time-consuming, reducing the grinding efficiency, and consuming the energy of operators.
SUMMARY OF THE INVENTION
In response to the difficulty of replacing sand cloth on the grinding axle of the upstanding grinder for woodwork, the present invention improved the conventional structure, and designed this structure to utilize the limited space on the grinding based to install a set of flexible insert rod component, so that when the rotary axle is still, the rod can be inserted into the insert slot of the rotary axle, and the operators can use one wrench to complete the assembly/disassembly of grinding axle, so that the grinding efficiency could be greatly improved.
Therefore, the present invention provides a set of flexible insert rod component in the limited space of the grinder, so that operators can use fingers to position the rotary axle, in order to improve the operating efficiency of the grinding axle.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a diagram of the woodworking machine of the present invention.
FIG. 2 shows the part components of the woodworking machine of the present invention.
FIG. 3 shows a partial exploded view of the flexible insert rod component of the present invention.
FIG. 4 shows a diagram of the conventional woodworking machine.
FIG. 5 shows a local diagram of the conventional woodworking machine.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.
Referring to FIGS. 1 and 2, the grinder 20 is installed with a working table 21 in the upper part, and a grinding base 22 in the lower part, and there is a rotary axle 23 protruding from the center of the grinding base 22 and a grinding axle 25 linked to the rotary axle, and sand belt (not shown) is installed on the outside of the grinding axle 25 for grinding of wood.
Because the grinding axle 25 rotates at a high school for grinding and polishing, the sand belt is worn in a high speed, so that it needs to be replaced after a period of time. However, due to the limited space of the working table 21, the operators need to assemble/disassemble the grinding axle within the limited space between the working table 21 and grinding base 22. The present invention installs a flexible insert rod component 30 on one side of the grinding base 22, and allow the end of the insert rod 41 to be inserted into the insert slot on the rotary axle 23, so that the rotary axle 23 can remain stationary, and operators only need to use one tool to rotate the hexagonal section 26 under the grinding axle 25 to assemble/disassemble the grinding axle 25 quickly.
The structure of the flexible insert rod component 30, as shown in FIG. 3, comprises a U-shape positioning base 31 and insert rod 32, so that the insert rod 32 is sheathed over the spring 37 and placed inside the positioning base 31; a buckling ring 3536 is inserted into the two limiting slots 3334 on the insert rod 32, respectively, so that one buckling ring 35 can be located on the inside of the limiting plate 38 of the positioning base 31, and another buckling ring 36 is located one the outside of the limiting plate 39; when operators need to assemble/disassemble the grinding axle 25, they only need to press the front of the insert rod 42 with hand to insert the end 41 into the vacant slot 24 on the rotary axle 23 and to limit the rotation of the rotary axle 23 and grinding axle 25; when the assembly/disassembly of the grinding axle 25 is completed, the operators only need to press the front of the insert rod 42 to withdraw the entire insert rod 31 under the limitation of the spring 37 and two buckling rings 3536, in order to release the positioning limitation of the rotary axle 23.
Therefore, the flexible insert rod component provided by the present invention on the grinding base of the woodworking machine can allow operators to assemble/disassemble the grinding axle conveniently, so that grinding efficiency could be greatly improved.
Patent Application
20090280733
