Patent Application
20090151171
1. Field of the Invention
The present invention relates to a cardboard cutter, and more particularly to a cardboard cutter which can fix the cutting assembly stably.
2. Description of the Prior Art
In order to decorate a photograph, a cardboard cutter is usually used to cut a center portion of a thick cardboard and then the photograph is put into the cut portion of the thick cardboard, such an arrangement can not only decorate the periphery of the photograph, but also set off the photograph very well, so as to obtain a stereo sense. Referring to
However, if the cardboard A is too thick or too hard, the cutting blade 20 will bear a greater resistance during the cutting process, as shown in
Firstly, since the cutting blade 20 will be returned to the main body 10 by the resistance of the cardboard A, the cuffing operation cannot be finished at one time, and the cardboard A can only be cut into a predetermined shape in two or more steps. Thereby, the cutting process of the conventional cardboard cutter is complicated.
Secondly, the cutting operation can only be finished by the cutting blade 20 in more steps, and the cutting marks are different, so the products cut by the cutting blade 20 will have many irregular cutting marks. As a result, the cutting lines will not be trim and the products cut by the cutting blade 20 are unbeautiful.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide a cardboard cutter which can fix the cutting assembly on a main body stably, the cutting assembly will not be moved by the resistance of the cardboard during cutting process, and the cutting operation can be finished at one time. Moreover, the cutting lines are trim and the products are beautiful.
To achieve the object of the present invention, the cardboard cutter comprises a main body, at least one cutting assembly and one positioning assembly. The main body includes a pressing surface for pressing against the cardboard. The cutting assembly is slidably mounted on the main body, and an angle of the cutting direction of the cutting assembly relative to the pressing surface of the main body is larger than 0 degree. The positioning assembly is disposed on the main body and is provided for fixing the cutting assembly. By such arrangements, during cutting process, the cutting assembly can be stably fixed on the main body by the positioning assembly, so the cutting depth is fixed, and the cutting operation can be finished at one time. Further, the cutting lines are trim and the products are beautiful.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiments in accordance with the present invention.
Referring to
The main body 10 includes a pressing surface 11 for pressing against the cardboard A. The main body 10 is defined with a first restricting channel 12, a second restricting channel 13, a third restricting channel 14 and a fourth restricting channel 15, and each restricting channel having a U-shaped cross section. Each of the first restricting channel 12, the second restricting channel 13, the third restricting channel 14 and the fourth restricting channel 15 is formed with two opposite restricting portions formed at two opposite outer edges thereof, respectively. The first restricting channel 12 is parallel to the second restricting channel 13, and the extension direction of the first restricting channel 12 is the same as that of the second restricting channel 13. The extension direction of the first and the second restricting channels 12 and 13 lies at an angle of 45 degrees to the pressing surface 11, respectively. The outer edges of the second restricting channel 13 are connected to the bottom of the first restricting channel 12. The third restricting channel 14 is parallel to the fourth restricting channel 15, and the extension direction of the third restricting channel 14 is the same as that of the fourth restricting channel 15. The extension direction of the third and fourth restricting channels 14 and 15 are vertical to the pressing surface 11, respectively. The outer edges of the fourth restricting channel 15 are connected to the bottom of the third restricting channel 14.
Each cutting assembly 20 includes a seat 21 and a blade 22. The seat 21 is defined with a through hole 211, the blade 22 is mounted on the seat 21 and is formed with a through hole 221 to be aligned with the through hole 211 of the seat 21. The seats 21 of the cuffing assemblies 20 are received in the first and the third restricting channels 12 and 14, respectively, such that the cutting assemblies 20 can be slidably restricted in the first and the third restricting channels 12 and 14 by the restricting portions 121 and 141, respectively. The cutting direction of the blade 22 of the cutting assembly 20 located in the first restricting channel 12 lies at an angle of 45 degrees to the pressing surface 11, and the cutting direction of the blade 22 of the cutting assembly 20 located in the third restricting channel 14 is vertical to the pressing surface 11.
Each positioning assembly 30 includes a screw 31, a nut 32 and a knob 33. One end of the screw 31 is defined with threads 311, and the other end of the screw 31 is formed with a flange 312. The knob 33 is defined with a containing recess 331 that is in the same shape as the nut 32, and in the bottom of the containing recess 331 is defined a hole 332 for engaging with the threads 311 of the screw 31. The flanges 312 of the screws 31 of the positioning assemblies 30 are slidably restricted in the second and the fourth restricting channels 13 and 15 by the second and the fourth restricting portions 131 and 151, respectively. The threads 311 of the respective screws 31 are threaded with the nuts 32 after passing through the through holes 221 and 211 of the blade 22 and the seat 21, and the hole 332 of the knob 33, respectively. And the nuts 32 are received in the containing recesses 331 of the knobs 33.
Referring to
In this way, before cutting, the cardboard cutter can utilize the positioning assembly 30 to fix the cutting assembly 20 on the main body 10 stably so that the cutting problem caused by the excessive thickness or the hardness of the cardboard can be solved, it is apparent that the present invention has the advantages described as follows:
Firstly, since the cutting assembly 20 can be stably fixed on the main body 10 by the positioning assembly, the cutting assembly 20 will not be moved by the resistance of the cardboard during cutting process, and the cutting operation can be finished at one time. Thereby, the cutting process of the cardboard cutter of the present invention is simple.
Secondly, since the cardboard can be cut into a predetermined shape at one time, the cutting lines are quite trim and neat. Thereby, the products cut by the cardboard cutter of the present invention are beautiful.
In addition, the main body 10 can further be defined with a through hole 16 in a surface opposite to the pressing surface 11 thereof as shown in
By such arrangements, the knob 33 and the nut 32 are tightened to enable the distance between the nut 32 and the flange 312 of the screw 31 to be reduced, such that the cardboard cutter will be adjusted to press tightly against the tracks B by the knob 33 and the fixing member C, thus positioning the cardboard cutter.
Referring to
The angles of the cutting direction of the cutters 20 relative to the pressing surface 11 of the main body 10 in the above-mentioned embodiment are 45 degrees and 90 degrees, and other angles bigger than 0 degree are all applicable to the present invention.
Further, referring to
While we have shown and described various embodiments 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.
