WO2014067290A1 - Coupe-tube à libération rapide - Google Patents

Coupe-tube à libération rapide Download PDF

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Publication number
WO2014067290A1
WO2014067290A1 PCT/CN2013/078343 CN2013078343W WO2014067290A1 WO 2014067290 A1 WO2014067290 A1 WO 2014067290A1 CN 2013078343 W CN2013078343 W CN 2013078343W WO 2014067290 A1 WO2014067290 A1 WO 2014067290A1
Authority
WO
WIPO (PCT)
Prior art keywords
threaded rod
adjustment block
tube cutter
handle
cutter according
Prior art date
Application number
PCT/CN2013/078343
Other languages
English (en)
Inventor
Yeqing Tian
Original Assignee
Shanghai Kunjek Handtools And Hardware Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Kunjek Handtools And Hardware Co., Ltd filed Critical Shanghai Kunjek Handtools And Hardware Co., Ltd
Publication of WO2014067290A1 publication Critical patent/WO2014067290A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D21/00—Machines or devices for shearing or cutting tubes
    • B23D21/06—Hand-operated tube-cutters
    • B23D21/08—Hand-operated tube-cutters with cutting wheels

Definitions

  • Embodiments of the present invention generally relate to hand tools, and more specifically to a tube cutter having a quick release blade withdrawal mechanism.
  • Tube cutters for cutting circular metal pipes in the radial direction are known. Since circular pipes are widely used in almost every field, tube cutters have become a common cutting tool. Traditional tube cutters use a screw mechanism and rotate the workpiece to clamp or release the workpiece. Such existing tube cutters have cumbersome knife withdrawal operations, which take a long time to withdrawal the knife, thus lowering the efficiency. Thus, such tools are relatively slow in clamping and are inefficient.
  • a tubing cutter is disclosed in U.S. Patent No. 3,965,572.
  • a threaded member is engaged by a pivotable threaded pawl.
  • the threaded member includes recesses which allow the threaded pawl to pivot.
  • the disclosed arrangement allows quick advance or retreat of the threaded member only after the threaded pawl pivots in one of the recesses.
  • a tube cutter comprising a main body, a knife blade mounted on the main body, a threaded rod movable relative to the main body, and rollers mounted to the threaded rod.
  • the tube cutter further comprises a adjustment block manually movable between an engaged position in which the adjustment block engages the threaded rod and a release position in which the adjustment block does not engage the threaded rod.
  • a tube cutter is disclosed.
  • the tube cuter comprises a frame, a threaded rod, a knife blade mounted to the threaded rod, and rollers mounted on the frame.
  • the tube cutter further comprises a adjustment block manually movable between an engaged position in which the adjustment block engages the threaded rod and a release position in which the adjustment block does not engage the threaded rod.
  • a tube cutter comprising a frame, a threaded rod moveable relative to the frame, a blade, rollers, and a handle configured to rotate the threaded rod.
  • the tube cutter further comprises a rapid clamping mechanism configured to provide for quick movement of the threaded rod relative to the frame.
  • the rapid clamping mechanism comprises a adjustment block movable between an engaged position in which the threaded rod moves relative to the frame by rotating the handle and a release position in which the threaded rod moves relative to the frame without rotating the handle.
  • Figure 1 a is a perspective and partially exploded view of a tube cutter, according to an embodiment.
  • Figure 1 b is a perspective and partially exploded view of the tube cutter, according to the embodiment.
  • Figure 2 is a perspective view of an adjustment block of the tube cutter, according to the embodiment.
  • Figure 3 is a perspective view of a button actuator of the tube cutter, according to the embodiment.
  • Figure 4 is a side view of the tube cutter with the button actuator in an engaged position, according to the embodiment.
  • Figure 5 is partially cut-away side view of the tube cutter with the button actuator in the engaged position, according to the embodiment.
  • Figure 6 is a side view of the tube cutter with the button actuator in a release position, according to the embodiment.
  • Figure 7 is a partially cut-away side view of the tube cutter with the button actuator in the release position, according to the embodiment.
  • Figure 8 is a side view of a second side of the tube cutter, according to the embodiment.
  • Figure 9 is a perspective and partially exploded view of the tube cutter, according to an embodiment.
  • a tube cutter in accordance with the first embodiment is generally designated by reference numeral 100.
  • FIG. 1 a is an exploded view of the tube cutter 100.
  • the tube cutter 100 according to an embodiment is shown in a perspective, partially exploded view.
  • the tube cutter 100 includes a main body 102.
  • the main body 102 includes a threaded rod 101 having threads formed thereon and a supporting base 102a which supports the threaded rod 101 .
  • the threaded rod 101 has single thread formed at its outer surface.
  • the threaded rod 101 is connected to a handle 1 12 for manually rotating the threaded rod 101 .
  • An accommodating hole is disposed inside the supporting base 102a in a location corresponding to the threaded rod 101 .
  • the tube cutter 100 further includes a rapid clamping mechanism 200 disposed on the supporting base 102a.
  • the tube cutter 100 also includes a knife 1 10 (shown in Fig. 4) and rollers 109, which operate in the conventional fashion. That is, the tube cutter 100 can be positioned around a tube to be cut, with the blade 1 10 and rollers 109 arranged on opposite sides of the tube, in the manner discussed further below. A user can then rotate the tube cutter 100 around the tube. In this manner, the knife 1 10 is caused to engage and cut the tube. The user can turn the handle 1 12 to tighten the threaded rod 102 as needed to complete the cutting operation. As the knife 1 10 cuts into the tube, the user rotates the threaded rod so that the distance between the knife 1 10 and the rollers 109 decreases and the knife 1 10 cuts deeper into the tube. This process continues until the tube is fully cut.
  • a knife 1 10 shown in Fig. 4
  • rollers 109 which operate in the conventional fashion. That is, the tube cutter 100 can be positioned around a tube to be cut, with the blade 1 10 and rollers 109 arranged on opposite sides of the tube
  • the rapid clamping mechanism 200 includes an adjustment slot 103 disposed in the supporting base 102a.
  • the adjustment slot 103 is triangular in shape. A portion of the thread of the threaded rod 101 is exposed outside the accommodating hole of the supporting base 102.
  • the tube cutter 100 includes the rapid clamping mechanism 200 disposed in the adjustment slot 103.
  • the rapid clamping mechanism includes adjustment block 104, adjustment button 105, button bolt 105a, spring 106, cover plate 107, and cover plate bolt 108.
  • the structure and operation of the rapid clamping mechanism 200 will be discussed further below in connection with Figs. 2-7.
  • the handle 1 12 includes a hollow space 1 12a.
  • Spare blades 1 10a may be provided in the hollow space 1 12a.
  • a cap 1 1 1 is configured to removably cover the hollow space 1 12a, securing the spare blades 1 10a in place. If the blade 1 10 becomes dull, the user can replace it with one of the spare blades 1 10a.
  • the adjustment block 104 is shown in Fig. 2. In this embodiment, the adjustment block 104 is triangular in shape. The adjustment block 104 is disposed in the adjustment slot 103 and is movable up and down (or left and right, depending on the configuration of the slot 103 and the orientation thereof).
  • the adjustment block 104 has a threaded section 104a formed on a side facing the portion of thread of the threaded rod 101 that is exposed outside the accommodating hole of the supporting base 102.
  • the threads of the threaded section 104a match the threads on the threaded portion of the threaded rod 101 .
  • the adjustment block 104 also includes hole 104b, accommodating slot 104c, and protruding step 104d.
  • the spring 106 is fixedly disposed or disposed by contact inside the accommodating slot 104c.
  • the other end of the spring is connected to the adjustment slot 103 by contact.
  • the adjustment button 105 is shown in Fig. 3.
  • the adjustment button 105 is configured to adjust the threaded adjustment block 104 to approach or back away from the threaded rod 101 .
  • the adjustment button 105 includes a hole 105b.
  • the bolt 105a passes through the through hole 105b and is fixedly connected to the threaded adjustment block 104 by threaded connection into hole 104b (which has threads formed inside). In this manner, adjustment button 105 is operatively connected to adjustment block 104.
  • the cover plate 107 includes an opening 107b through which the adjustment button 105 connects to the adjustment block 104
  • the cover plate 107 can be seen in Fig. 1 .
  • Cover plate 107 is mounted on the supporting base 102 by plate bolt 108.
  • Four small columns on the cover plate 107 fit into corresponding holes in supporting base 102.
  • the supporting base 102 includes bolt hole 102b.
  • the cover plate 107 includes through hole 107a.
  • the plate bolt 108 passes through the through hole 107a in the cover plate 107 and is secured in the bolt hole 102b on the supporting base 102.
  • the adjustment button 105 is secured to the cover plate 107.
  • the cover plate 107 has an opening 107b.
  • the adjustment block 104 has a protruding step 104d that fits into the opening 107b.
  • a lower end portion of the push button 105 is disposed over and covers the protruding step 104d.
  • the hole 104b is disposed on the protruding step 104d.
  • the threaded portion 104a of the adjustment block 104 can be disengaged from the thread of the treaded rod 101 by pushing the push button 52, therefore, realizing the goal of rapid clamping or releasing the workpiece. This operation is now described with respect to Figs. 4-7.
  • the adjustment button 105 When the rapid clamping mechanism 200 is in an engaged mode, the adjustment button 105 is positioned in a location at an upper portion of the adjustment slot 103 on the supporting base 102, so that the threaded portion 104b on the threaded adjustment block 104 and the thread on the threaded rod 101 are engaged. This position is shown in Figs. 4 and 5. In Fig. 5. the cover plate 107 and adjustment button 105 are not shown. As can be seen in Fig. 5, the spring 106 is in the extended state. Thus, the adjustment button 105 is urged to the upper portion of the adjustment slot 103. In the engaged mode shown in Figs. 4 and 5, a workpiece may be clamped or released by rotating the threaded rod 101 .
  • a user pushes the adjustment button 105 towards left and down. This position is shown in Figs. 6 and 7. In Fig. 7, the cover plate 107 and adjustment button 105 are not shown. As the adjustment button 105 moves left and down, the adjustment block 104 applies pressure to the spring 106 and compresses the spring 106 into the accommodating slot 104c. The adjustment block 104 moves downward along the adjustment slot 103. The threaded section 104a of the adjustment block 104 disengages from the threads of the threaded rod 101 , as shown in Fig. 7.
  • the workpiece With the rapid clamping mechanism 200 in the release mode, the workpiece can be rapidly clamped or released by push or pull the threaded rod 101 .
  • the threaded rod 101 When the threaded rod 101 is adjusted to the desired position, the user can release the adjustment button 105 so that the adjustment block 104 returns to the upper portion of the adjustment slot 103 under the force of the spring 106.
  • releasing the adjustment button 105 causes the rapid clamping mechanism 200 to return to the engaged mode in which the threaded section 104a and the threads on the threaded rod 101 are again engaged together.
  • the threaded rod 101 can be moved towards a closed position due to the permitted movement of the adjustment block 104 within the adjustment slot 103 and the opening 107b.
  • a user can overcome the bias from the spring 106 that urges the threaded section 104a into engagement with the threads of the threaded rod 101 .
  • a diameter between the blade 1 10 and the rollers 109 can be easily minimized to engage a workpiece, without rotating the handle 1 12 and without actively moving the adjustment button 105.
  • the movement of the adjustment block does not allow the threaded rod to be moved to an open position unless the handle 1 12 is rotated or unless the adjustment button 105 is pushed. This allows tension to be applied as needed for cutting operations.
  • the tube cutter 100 may include a burr tool 1 13 slidably attached to the main body 102 with a fastener 1 13a.
  • the fastener 1 13a may be, for example, a screw with a large head, or it may be a standard screw with a beveled washer.
  • the burr tool 1 13 can be used to clean burrs from the cut ends of the workpiece.
  • the burr tool 1 13 may be a blade with a cutting edge.
  • the burr tool 1 13 may not have a cutting edge, and instead includes flat edges that lead to a point.
  • the burr tool 1 13 When not in use, the burr tool 1 13 is in a retracted position, disposed within a recessed area 102c within the main body 102. When the user needs to clean burrs or the like, the burr tool 1 13 can be extended by pushing against an actuator 1 13b to slide the burr tool 1 13 into an extended position, as indicated by the phantom lines in Fig. 8.
  • the blade 1 10 is mounted to the main body 102 and the rollers 109 are mounted to the threaded rod 101 .
  • the blade 1 10 is mounted to the threaded rod 101 and the rollers 109 are mounted to the main body 102.
  • a pressure spring 1 14 is disposed around the threaded rod 101 , between the handle 1 12 and the supporting base 102a. The pressure spring 1 14 provides a biasing force urging the handle 1 12 and the supporting base apart.
  • the rapid clamping mechanism 200 When the rapid clamping mechanism 200 is in the release mode (i.e., when the threaded section 104a of the adjustment block 104 disengages from the threads of the threaded rod 101 ), the biasing force from the pressure spring 1 14 pushes the handle 1 12 away from the supporting base 102a, thereby quickly maximizing a diameter between the blade 1 10 and the rollers 109. In this manner, opening the tube cutter 100 to a maximum diameter for engaging a tube to be cut can be done with high efficiency.
  • the threaded rod 101 has double thread. Comparing to a using single thread, using a double thread increases the clamping speed when rotating the threaded rod in the engaged mode.
  • the above embodiment provides certain advantages.
  • One push on the adjustment button 105 releases the adjustment block 104 from the threaded rod 101 under the tension of the spring 106 and allows quick change in distance between the blade 201 and the rollers 202.
  • the diameter between the blade 201 and the rollers 202 needs to be reduced slowly, i.e., when cutting a tube, the user can rotate the handle 1 12 on the end of the threaded rod 101 .
  • the tube cutter 100 is not limited to the above-discussed embodiments.
  • the threaded rod may be mounted to the main body of the tube cutter 100 through a receiving hole comprised of two halves. One half is threaded and the other half is not threaded.
  • the threaded half is pivotable away from the threaded shaft to a release position, allowing the threaded rod to slide quickly toward or away from a workpiece to be cut.
  • the pivotable threaded half corresponds to the adjustment block 104.
  • a lever or button moves the pivotable threaded half/adjustment block 104 to the release position.
  • the adjustment block contemplated in the present application includes any threaded or partially-threaded structure that is movable between an engaged position in which the adjustment block engages the threaded rod and a release position in which the adjustment block does not engage the threaded rod.
  • the adjustment block is movable between the engaged position and the release position regardless of the position of the threaded rod relative to the frame or body. That is, quick release and movement of the threaded rod is independent of the position of the threaded rod relative to the frame or body.
  • the presently disclosed embodiments have the following advantages.
  • First, the tube cutter 100 according to the embodiments provides for rapid clamping and releasing of the workpiece in the tube cutter.
  • the tube cutter 100 according to the embodiments is simple to operate and convenient to use.
  • Third, the tube cutter 100 according to the disclosed embodiments is structurally simple, convenient to manufacture, and low in cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

La présente invention concerne un coupe-tube comprenant un corps principal (102). Selon l'invention, une lame de couteau (110) est montée sur le corps principal et une tige filetée (101) est mobile par rapport au corps principal. Des rouleaux (109) et une poignée (112) sont montés sur la tige filetée. Le coupe-tube comprend en outre un mécanisme de fixation rapide (200) conçu pour fournir un mouvement rapide de la tige filetée par rapport au corps principal (102). Le mécanisme de fixation rapide (200) comprend un bloc de réglage (24) mobile entre une position de coopération dans laquelle la tige filetée (120) se déplace par rapport au corps principal (102) par rotation de la poignée (112) et une position de libération dans laquelle la tige filetée (101) se déplace par rapport au corps principal (102) sans rotation de la poignée (112). Le coupe-tube comprenant le mécanisme de fixation rapide (200) a une structure simple, est facile à mettre en œuvre et est pratique à utiliser.
PCT/CN2013/078343 2012-10-29 2013-06-28 Coupe-tube à libération rapide WO2014067290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201220559167.8 2012-10-29
CN 201220559167 CN203018824U (zh) 2012-10-29 2012-10-29 一种快速金属管割刀

Publications (1)

Publication Number Publication Date
WO2014067290A1 true WO2014067290A1 (fr) 2014-05-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/078343 WO2014067290A1 (fr) 2012-10-29 2013-06-28 Coupe-tube à libération rapide

Country Status (2)

Country Link
CN (1) CN203018824U (fr)
WO (1) WO2014067290A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104191028A (zh) * 2014-08-20 2014-12-10 无锡众望四维科技有限公司 锁舌用斜切机构
US20180021863A1 (en) * 2016-07-20 2018-01-25 Tsan-Lung Chen Pipe cutter
TWI642526B (zh) * 2018-01-19 2018-12-01 邱宗堯 Portable pipe cutter with elastic preload

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203018824U (zh) * 2012-10-29 2013-06-26 上海昆杰五金工具有限公司 一种快速金属管割刀
DE102018124817A1 (de) * 2018-10-09 2020-04-09 Knipex-Werk C. Gustav Putsch Kg Rohrschneidegerät
CN215316016U (zh) * 2021-02-20 2021-12-28 浙江巨星工具有限公司 切割工具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8767475A (en) * 1975-02-19 1977-06-23 Bastiansen G Tool for cutting and grading plastic pipes
US4345376A (en) * 1979-11-15 1982-08-24 Reed Manufacturing Company Cutter for thick wall plastic pipe
DE10027315A1 (de) * 2000-06-05 2001-12-13 Pf Schweistechnologie Gmbh Schälgerät für zylinderförmige Gegenstände
US20020040529A1 (en) * 2000-06-05 2002-04-11 Bernd Merle Paring device
CN102275006A (zh) * 2011-08-09 2011-12-14 吴江市永佳防爆器材有限公司 一种金属管切割器
CN203018824U (zh) * 2012-10-29 2013-06-26 上海昆杰五金工具有限公司 一种快速金属管割刀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8767475A (en) * 1975-02-19 1977-06-23 Bastiansen G Tool for cutting and grading plastic pipes
US4345376A (en) * 1979-11-15 1982-08-24 Reed Manufacturing Company Cutter for thick wall plastic pipe
DE10027315A1 (de) * 2000-06-05 2001-12-13 Pf Schweistechnologie Gmbh Schälgerät für zylinderförmige Gegenstände
US20020040529A1 (en) * 2000-06-05 2002-04-11 Bernd Merle Paring device
CN102275006A (zh) * 2011-08-09 2011-12-14 吴江市永佳防爆器材有限公司 一种金属管切割器
CN203018824U (zh) * 2012-10-29 2013-06-26 上海昆杰五金工具有限公司 一种快速金属管割刀

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104191028A (zh) * 2014-08-20 2014-12-10 无锡众望四维科技有限公司 锁舌用斜切机构
US20180021863A1 (en) * 2016-07-20 2018-01-25 Tsan-Lung Chen Pipe cutter
US10035202B2 (en) * 2016-07-20 2018-07-31 Top Goal Enterprise Limited Pipe cutter
TWI642526B (zh) * 2018-01-19 2018-12-01 邱宗堯 Portable pipe cutter with elastic preload

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