Tube scissors
A technology of pipe cutting and tool rest, applied in pipe cutting device, shearing machine equipment, shearing device and other directions, can solve the problems of laborious operation and difficult control of the rack, and achieve the effects of reliable operation, simple operation and simple structure.
Inactive Publication Date: 2009-03-18
张兆先
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Its shortcoming is, 1, because the tooth rack that this technical scheme adopts is difficult to control during use, must have a small tooth at the end of the blade to be assisted to align the tooth rack by hand, just can operate normally; 2, because the tooth rack 3. It can only cut PVC pipes with small diameters, and it will be helpless for PVC pipes with diameters larger than 100 mm.
Method used
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Embodiment Construction
[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0019] With reference to the accompanying drawings, the present invention includes an F-shaped knife rest 4, namely a frame body 2, the head of the frame body 2 is fixed with a substantially parallel first head 8 and a second head 7. A knife rest groove 35 is provided in the knife rest 4, and the blade 13 can cooperate with the knife rest 4 and slide in the knife rest groove 35, and the cutting edge of the blade 13 faces the short side of the F shape of the knife rest 4, that is, the first head 8 and the second head 7. A rack 34 is arranged on the back of the blade 13 , and a gear 28 meshing with the rack 34 of the blade 13 is mounted on the tool holder 4 . A handle 1 is provided with a gear shaft 27 as a pivot, and a knife feed ratchet mechanism for driving the gear 28 to rotate is installed on the handle 1 . The feed ratchet mechanism is made up of the fe...
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Abstract
The invention discloses a pipe cutter, which comprises a cutter carriage, a blade matched with the cutter carriage and sliding in a cutter-carriage groove, and a gear rack arranged on the back of the blade. The invention is characterized in that the cutter carriage is F-shaped, and the cutting edge of the blade faces the shorter edge of the F-shaped cutter carriage; a gear engaged with the gear rack of the blade is arranged on the cutter carriage, a handle is provided with the gear shaft as the pivot, a cutter-feeding ratcheted mechanism which pushes the gear to rotate is arranged on the handle, a cutter-retracting ratcheted mechanism is arranged on the cutter carriage; a return spring is connected between the tail part of the blade and the cutter carriage; a blade moving groove is arranged on the main body of the blade, and a pin rod fixed on the cutter carriage is positioned in the blade moving groove; a protecting frame taking a protecting-frame shaft as the pivot is arranged at the opening of the F-shaped cutter carriage, a cutter groove is arranged in the protecting frame; the head of the protecting frame is equipped with a lock button connected with the cutter carriage. The invention can cut plastic pipes with diameter up to 110 mm.
Description
technical field [0001] The invention relates to a manual shearing tool, in particular to a pipe shearing knife capable of cutting large-diameter plastic pipes. Background technique [0002] Usually, plastic pipes are cut by hand or electric saws, which is time-consuming and labor-intensive during operation. At the same time, the sawing cut is uneven, and flashes or burrs often appear, which affects the use of the pipe. The utility model patent whose application number is 92232522 discloses a kind of plastic pipe scissors, which solves the above-mentioned problems. It includes scissors and blades, and its characteristic is that there is a rack linkage mechanism between the scissors. One end of the rack is positioned on the upper end of the left scissors through bolts, and the two ends of the connecting rod are respectively pinned to the positioning grooves of the rack and the blade. , There is a small tooth at the end of the blade to engage with the rack, and the bolt is eq...
Claims
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IPC IPC(8): B23D21/06
Inventor 张兆先
Owner 张兆先