TW202000406A - Plastic tube cutter capable of being operated with a single hand, cutting high-thickness plastic tube body in a rotation manner, and having flat cutting surface - Google Patents

Abstract

The plastic tube cutter of the present invention includes a housing, a cutting unit and a pressing arm. The cutting unit is pivotally disposed inside the housing. One end of the housing has an opening of semi-circular concave arc portion and mutually corresponding four rollers provided at intervals on both sides of the end face. The other end of the housing has a holding arm. The pressing arm is pivotally disposed to the bottom of the housing and is opposite to the holding arm. When a plastic tube body is placed to the four rollers provided on the semi-circular concave arc portion a user can press the pressing arm to drive the cutting unit to pivot, so as to achieve the purpose of keeping the degree of freedom of cutting pressure and the flatness of the cutting surface while cutting the plastic tube body. Moreover, the holding arm and the pressing arm are respectively including a hook member and a rod on the opposite sides thereof. The hook member is hooked with the rod and the four rollers are used to guide, so that the high-thickness plastic tube body can be cut in a rotation manner and the cutting surface is flat.

Description

Plastic tube cutter

The invention relates to a hand-held cutting device capable of pressing and rotating cutting, in particular to a plastic tube cutter with four rollers, which can be operated with one hand and used for cutting plastic tubes.

Press, the general hydropower technician piping maintenance or decorating master will carry a plastic pipe cutter to cut the pipe work at the job site. Because the thickness of the plastic pipe and the nature of the material are not the same, the conventional scissors plastic Tube cutters or roller cutter type plastic pipe cutters have their own shortcomings. Scissor pipe cutters will flatten plastic pipes when cutting thin pipes, resulting in uneven cut surfaces; roller cutter pipe cutters are used to cut thick pipes The cutting speed is too slow, so the conventional pipe cutter still needs to be improved.

In view of this, how to eliminate the above deficiencies is the technical difficulty that the inventor of the present invention intends to solve; but, based on years of experience in the relevant industry, the inventor of the present case has worked painstakingly and painstakingly for many years to try to improve and finally Successfully developed and completed the case, and enabled the invention to be born to improve efficiency.

In view of the above shortcomings, the plastic pipe cutter of the present invention includes: a casing, a cutting unit and a pressing arm, the casing cutting unit is pivotally arranged in the casing, and one end of the casing has a semi-circular concave The opening of the concave arc portion and the two sides of the end surface are spaced apart from each other on the opposite side of the four rollers. The other end has a grip arm. The pressing arm is pivotally provided at the bottom of the housing and opposite the grip arm. A plastic tube is provided by the four rollers in the semi-circular concave arc portion, and the user presses the pressing arm to drive the cutting unit to pivot, so as to achieve the purpose of cutting the plastic tube to maintain the freedom of cutting and flattening the cut surface In addition, on the opposite side of the holding arm and the pressing arm, a hook and a rod body are respectively provided, and the hook and the rod body are hooked, and the four rollers are used to guide, so that the cutting height can be rotated Thick plastic pipe body and the purpose of flattening the cut surface.

In order to facilitate your review committee to understand the content of the present invention and the effects that can be achieved, specific embodiments are listed in conjunction with the drawings, which are described in detail as follows:

Please refer to the first to third figures. The plastic tube cutter 1 of the present invention includes: a hollow casing 10, a cutting unit 20 and a hollow pressing arm 30. The components are described as follows:

The casing 10 has a semi-circular concave arc portion 11 at one end, and an opening 111 communicating with the interior is provided on the end surface of the semi-circular concave arc portion 11, and the opening and the two sides of the end surface are provided with mutual correspondence Four rollers 112, one end of the opening 111 extends to the outside of the casing 10, a first pushing member 12 is elastically arranged inside the casing 10, and a stopper 121 is respectively arranged on both sides of the bottom of the first pushing member 12 And a toggle portion 122, the other end of the casing 10 has a grip arm 13 at the other end.

The cutting unit 20 is pivotally disposed in the housing 10, and a pivot hole 21 is provided at the center of the cutting unit 20 to provide pivot connection in the housing 10, and a blade portion is provided on one side of the pivot hole 21 22, the blade portion 22 is accommodated in the housing 10 and extends to the outside of the opening 111, and the blade portion 22 has a protruding tip portion 221, the other side of the pivot hole 21 is provided with a concave portion 211, The concave portion 211 is stopped by the interior of the housing 10. A hook portion 23 is provided at the bottom of the cutting unit 20. The hook portion 23 is provided with a first elastic element 24. The other end of the first elastic element 24 is coupled to the In the housing 10, the cutting unit 20 is pivoted clockwise by the elastic force of the first elastic element 24, and the recess 211 stops the pivoting of the cutting unit 20. One side of the cutting unit 20 is provided with a ratchet The tooth portion 25, the ratchet portion 25 has a plurality of ratchet teeth 251, one end of the ratchet portion 25 is adjacent to the hook portion 23, the stopper of the first pushing member 12 is located between each ratchet tooth 251, Stop the cutting unit 20 from pivoting.

The pressing arm 30 is pivotally disposed at the bottom of the housing 10 and is spaced apart from the holding arm 13. The pressing arm 30 is provided with a stop element 31 and a hollow second pushing member 32. The stop One side of the element 31 is in contact with the toggle portion 122, the first pushing member 12 is accommodated in the second pushing member 32, and the length of the second pushing member 32 is longer than that of the first pushing member 12, so that the The front end of the second pushing member 32 is caught between the ratchet teeth 251.

Please refer to the fourth and fifth figures, which are schematic views of the use state of the plastic tube cutter of the present invention. The plastic tube cutter 1 of the present invention provides cutting of plastic tubes, and the semi-circular concave arc portion 11 of the housing provides accommodating plastic tubes. The plastic tubes are supported by four rollers 112 to facilitate the plastic during the cutting process The tube body maintains the freedom of cutting and pressing; when cutting, the user simultaneously holds the pressing arm 30 and the holding arm 13 and presses the pressing arm 30, so that the pressing arm 30 pivots toward the holding arm 13 while The pushing member 12 pushes between the ratchet teeth 251, so that the cutting unit 20 rotates counterclockwise by the distance of one ratchet tooth 251, and after continuously pressing the pressing arm 30, the blade portion 22 of the cutting unit 20 gradually cuts into the plastic tube body, To achieve the purpose of cutting the plastic pipe body, the stopper 121 of the first pushing member 12 is caught between the ratchet teeth 251 to prevent the cutting unit 20 from rotating clockwise and resetting during the cutting process.

Please refer to the sixth figure, which is a schematic diagram of the reset action of the plastic tube cutter of the present invention. According to the above, when the cutting is completed, the ratchet portion 25 of the cutting unit 20 is caught by the second pushing member 32 at this time, so that the cutting unit The blade portion 22 of 20 is located in the semi-circular concave arc portion 11, and the first pushing member 12 and the second pushing member 32 are separated from the ratchet portion 25 by pulling the pressing arm 30 outward, and the cutting unit 20 is The elastic force of the first elastic element 24 rotates clockwise, and is stopped by the concave portion 211 to stop the cutting unit 20 from pivoting, and the reset operation is completed.

Please refer to the first picture, the second picture, and the seventh picture, which are another embodiment of the plastic pipe cutter of the present invention. First, the plastic pipe body is fixed on a pipe fixture. The semicircular concave arc part of the plastic tube cutter after resetting is moved to the position to be cut, and the plastic tube body is supported by the four rollers 112, please refer to the seventh figure. Press one ratchet tooth 251 at a distance so that the protruding tip of the blade part cuts into the plastic tube body. At the same time, the hook member 131 is hooked on the rod body 33 to make the pressing arm 30. The grip arm 13 is fixed without pivoting, and the grip tube 13 is pushed and rotated by using a plastic tube as a fixed axis. Rotate like an arrow. The tip of the blade is guided by four rollers to rotate and cut along the outer diameter of the plastic tube. Each time the rotation cuts one more time, the hook 131 is moved away from the rod body 33, and then the blade portion is cut deeper into the plastic pipe body. At the same time, the hook 131 is hooked on the rod body 33, and then the second rotation cutting is performed. ① Pressing into the knife ②Coupling ③Rotate and cut one circle ④Open the coupling and repeat ①　　②　 ③　　④The stroke can be fast, and the cut surface is smooth. This method is suitable for cutting high-thickness plastic pipes.

The above detailed description is a specific description of one possible embodiment of the present invention, but the tools and machines of different operation modes such as mechanical type, round knife type, screw feed type, etc. are not used to limit the patent scope of the present invention. Equivalent implementations or changes that deviate from the technical spirit of the present invention should be included in the patent scope of this case.

1‧‧‧Plastic tube cutter 10‧‧‧Shell 11‧‧‧Concave arc part 111‧‧‧Opening 112‧‧‧Roller 12‧‧‧First pusher 121‧‧‧stop 122122‧‧ ‧Dialing part 13‧‧‧ Grip arm 131‧‧‧Hook 20 20‧‧‧Cutting unit 21‧‧‧Pivot hole 211‧‧‧Concave part 22‧‧‧Blade part 221‧‧‧Point part 23‧ ‧‧Hook part 24‧‧‧ First elastic element 25‧‧‧Rat tooth part 251‧‧‧Rat tooth 30‧‧‧Press arm 31‧‧‧ Stop element 32‧‧‧Second pusher 33‧‧‧ Rod

The first figure is a perspective external view of the present invention. The second figure is an exploded perspective view of the present invention. The third figure is an internal structure diagram of the present invention. The fourth figure is a schematic view of the use state of the present invention. The fifth figure is a schematic diagram of the internal operation continued from the fourth figure. The sixth figure is a schematic diagram of the internal operation of the reset of the present invention. The seventh figure is a schematic diagram of another embodiment of the present invention.

10‧‧‧Housing

11‧‧‧Concave arc part

111‧‧‧ opening

112‧‧‧wheel

12‧‧‧ First pusher

121‧‧‧stop

122‧‧‧Dial Department

13‧‧‧ holding arm

131‧‧‧Hook fastener

20‧‧‧Cutting unit

21‧‧‧Pivot hole

211‧‧‧recess

22‧‧‧Blade

221‧‧‧tip

23‧‧‧Hook

24‧‧‧First elastic element

25‧‧‧ Ratchet

251‧‧‧ratchet

30‧‧‧Pressing arm

31‧‧‧stop element

32‧‧‧Second pusher

33‧‧‧Bar

Claims (2)

A plastic tube cutter includes: 　　 A hollow casing with a semi-circular concave arc at one end, and an opening communicating with the interior on the end surface of the semi-circular concave arc, the opening and the end surface There are four rollers corresponding to each other on both sides of the opening. One end of the opening extends to the outside of the casing. A first pushing member is elastically arranged inside the casing. A stopper and a toggle part, the other end of the casing has a grip arm; 　　 a cutting unit, which is pivotally arranged in the casing, and a pivot hole is provided at the center of the cutting unit to provide pivot connection to the In the housing, a blade portion is provided on one side of the pivot hole, the blade portion is accommodated in the housing and extends to the outside of the opening, and the blade portion has a protruding tip portion, the other of the pivot hole A concave portion is provided on the side, the concave portion is stopped by the interior of the housing, a hook portion is provided at the bottom of the cutting unit, the hook portion is provided with a first elastic element, and the other end of the first elastic element is integrated into the housing , The cutting unit is pivoted in a clockwise direction by the elastic force of the first elastic element, and the pivoting of the cutting unit is stopped by the concave portion, a ratchet portion is provided on one side of the cutting unit, the ratchet portion has a plurality of Ratchet teeth, one end of the ratchet tooth portion is adjacent to the hook portion, the stopper of the first pushing member is located between each ratchet tooth to stop the cutting unit from pivoting; and a hollow pressing arm, which The pivot is arranged at the bottom of the casing and is spaced apart from the holding arm. The pressing arm is provided with a stop element and a hollow second pusher. One side of the stop element is in contact with the toggle portion The first pushing member is accommodated in the second pushing member, and the length of the second pushing member is longer than that of the first pushing member, so that the front end of the second pushing member is caught between the ratchet teeth. The plastic tube cutter according to claim 1, wherein a hook is provided on the inner side of the holding arm, and a rod body corresponding to the hook is provided on the inner side of the pressing arm to provide the hook Close on the rod.

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