Blade replacement protection jig

Abstract

The utility model discloses a blade replacement protection jig which comprises a first jig and a second jig which are used in cooperation with each other, the first jig comprises an arc-shaped end and a square end which are integrally formed, and the arc-shaped end is matched with an arc of a working end of a pipe cutter and used for tightly attaching the first jig to the working end of the pipe cutter; the square end is provided with an opening end and a positioning end, the two sides of the opening end are provided with blade grooves used for containing blades, the positioning end is located on the side face opposite to the opening end, and the first jig is positioned in the working end of the pipe cutter through the positioning end; the second jig comprises an L-shaped body and a positioning body which are integrally formed, a groove is formed in the end face, away from the positioning body, of the body, the groove is matched with a clamping spring on a positioning pin of the pipe cutter, and the height size of the positioning body is matched with the size of a gap in a telescopic rod of the pipe cutter. According to the utility model, the blade of the pipe cutter can be easily disassembled or replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of protection jigs technical field, specifically to a kind of blade replacement protection jig. BACKGROUND

[0002] In prior art, the working end of handheld bearing type pipe cutter has a blade for cutting articles, as shown in the drawings, when disassembling or replacing the blade, it is very easy to scratch or cut hand, and it is also very difficult to take down the blade by wearing gloves, which is not only time-consuming and laborious, but also very inflexible. Figure 1 Utility model content To overcome the above many problems, the utility model aims at providing a kind of blade replacement protection jig, which is convenient for disassembling or replacing the blade and ensures safety.

[0003] In order to achieve the above purpose, the utility model adopts the technical scheme: a kind of blade replacement protection jig, comprising a first jig and a second jig used in cooperation, the first jig comprises a circular arc end and a square end, the circular arc end cooperates with the arc of the working end of the pipe cutter, and is used for tightly fitting the first jig with the working end of the pipe cutter, the square end is provided with an open end and a positioning end, the open end is provided with a blade slot on both sides for placing the blade, the positioning end is located on the side opposite to the open end, and the positioning end positions the first jig in the working end of the pipe cutter, the second jig comprises a body and a positioning body which are integrally formed and in L shape, the height size of the body is greater than the height size of the positioning body, a groove is arranged on the end face of the body away from the positioning body, the groove is matched with the snap spring on the pipe cutter positioning pin, the height size of the positioning body cooperates with the gap size inside the telescopic rod of the pipe cutter, and the width size of the positioning body cooperates with the width size of the open end of the first jig.

[0004] Preferably, the positioning end is provided with two positioning strips which protrude outward and are parallel to each other, and the positioning strips cooperate with the rollers of the working end of the pipe cutter to position.

[0005] Preferably, the two positioning strips are located between the two rollers to be clamped and positioned, so as to ensure that the first jig does not displace in the working end of the pipe cutter.

[0006] Preferably, the end face of the square end away from the circular arc end is provided with a placing groove for placing the second jig, so as to facilitate the cooperation of the two.

[0007] Preferably, a transparent protective cover is sleeved on the groove of the body of the second jig to prevent the snap spring on the positioning pin from splashing, which further improves the safety.

[0008] Preferably, the transparent protective cover is sleeved on the groove of the body of the second jig to prevent the snap spring on the positioning pin from splashing, which further improves the safety.

[0009] The utility model discloses the beneficial effect is: through the cooperation of first fixture and second fixture, very easily complete the dismounting or replacement of pipe cutter blade, save time and labour, and safe. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural diagram of pipe cutter in prior art;

[0011] Figure 2 It is the structural diagram of first fixture of this embodiment;

[0012] Figure 3 It is the structural diagram of second fixture of this embodiment;

[0013] Figure 4 It is the structural diagram of second fixture with protective cover of this embodiment;

[0014] Figure 5 It is the structural diagram of first fixture installation on pipe cutter of this embodiment;

[0015] Figure 6 It is the structural diagram of first fixture and second fixture of this embodiment installation on pipe cutter.

[0016] In the drawing: 1, first fixture;11, arc-shaped end;12, square end;13, opening end;14, positioning end;15, knife groove;16, positioning strip;17, storage groove;2, second fixture;21, body;22, positioning body;23, recess;24, protective cover;3, pipe cutter;31, working end;32, blade;33, roller;34, positioning pin;35, telescopic rod;36, knob. DETAILED DESCRIPTION

[0017] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is defined more clearly and explicitly.

[0018] Referring to Figures 2-6As shown, the embodiment discloses a blade replacement protection jig, which comprises a first jig 1 and a second jig 2 used in cooperation with each other, the first jig 1 comprises a circular arc-shaped end 11 and a square-shaped end 12 which are integrally formed, the circular arc-shaped end 11 cooperates with the circular arc of the working end 31 of the pipe cutter 3, and is used for tightly attaching the first jig 1 to the working end 31 of the pipe cutter 3; the square-shaped end 12 is provided with an open end 13 and a positioning end 14, the open end 13 is provided with a blade groove 15 on both sides for placing a blade 32, the positioning end 14 is located on the side opposite to the open end 13, the positioning end 14 positions the first jig 1 in the working end 31 of the pipe cutter 3, the positioning end 14 is provided with two positioning strips 16 which protrude outward and are parallel to each other, the positioning strips 16 cooperate with the rolling shafts 33 of the working end 31 of the pipe cutter 3 for positioning, and the two positioning strips 16 are located between the two rolling shafts 33 for clamping positioning; the second jig 2 comprises a body 21 and a positioning body 22 which are integrally formed and are in L shape, the height size of the body 21 is greater than that of the positioning body 22, the end face of the body 21 away from the positioning body 22 is provided with a groove 23, the groove 23 is adapted to the snap spring on the positioning pin 34 of the pipe cutter 3, the height size of the positioning body 22 cooperates with the gap size inside the telescopic rod 35 of the pipe cutter 3, and the width size of the positioning body 22 cooperates with the width size of the open end 13 of the first jig 1.

[0019] The square-shaped end 12 is provided with a placing groove 17 on the end face away from the circular arc-shaped end 11 for placing the second jig 2.

[0020] The groove 23 of the body 21 of the second jig 2 is sleeved with a transparent protective cover 24 for preventing the snap spring on the positioning pin 34 from splashing, the protective cover 24 is open at the bottom end of the groove 23, so as to facilitate the groove 23 to abut against the snap spring.

[0021] When installing the blade 32, first, the telescopic rod 35 of the pipe cutter 3 is telescoped into the pipe cutter 3 by the knob 36, then the blade 32 is placed in the blade slot 15 of the first jig 1, and then the arc-shaped end 11 and the positioning strip 16 of the first jig 1 are tightly attached to and fixed with the working end 31 and the roller 33 of the pipe cutter 3, the telescopic rod 35 is extended to the designated position by the knob 36 of the pipe cutter 3, the mounting hole at the end of the telescopic rod 35 is aligned with the mounting hole of the blade 32, the positioning pin 34 is respectively inserted into the positioning hole of the telescopic rod 35 and the mounting hole of the blade 32, the clamping spring opening matched with the positioning pin 34 is pre-placed at the preset mounting clamping spring opening, then the positioning body 22 of the second jig 2 is inserted into the gap inside the telescopic rod 35 of the pipe cutter 3, the groove 23 on the body 21 of the second jig 2 is contacted with the clamping spring, the body 21 of the second jig 2 is pressed by hand, the clamping spring is clamped on the positioning pin 34 by the force of rotating the knob 36 to push the telescopic rod 35, then the second jig 2 is taken out, the telescopic rod 35 is retracted into the pipe cutter 3 by rotating the knob 36, then the first jig 1 is taken out, and the installation of the blade 32 is completed.

[0022] When disassembling the blade 32, first, the telescopic rod 35 of the pipe cutter 3 is telescoped into the pipe cutter 3 by the knob 36, then the first jig 1 is installed into the working end 31 of the pipe cutter 3, and then the arc-shaped end 11 and the positioning strip 16 of the first jig 1 are tightly attached to and fixed with the working end 31 and the roller 33 of the pipe cutter 3, the telescopic rod 35 is extended to the designated position by the knob 36, the blade 32 is placed in the blade slot 15 of the first jig 1, the positioning body 22 of the second jig 2 is inserted into the gap inside the telescopic rod 35 of the pipe cutter 3, the groove 23 on the body 21 of the second jig 2 is contacted with the clamping spring opening, the telescopic rod 35 is pushed by the force of rotating the knob 36 to separate the clamping spring from the positioning pin 34 under the action of the groove 23, the clamping spring is separated from the positioning pin 34, the second jig 2 is taken off, the clamping spring is taken off, the positioning pin 34 is taken off, then the telescopic rod 35 is retracted into the pipe cutter 3 by rotating the knob 36, the first jig 1 is taken off, at this time, the blade 32 is placed in the blade slot 15 of the first jig 1, finally, the blade 32 is taken off, and the disassembly of the blade 32 is completed.

[0023] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, and any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A blade-replacement guard, characterized by, The utility model provides a first fixture and a second fixture are used in cooperation, the first fixture includes integral forming's round arc state end and square state end, the round arc state end is cooperated with the round arc of pipe cutter work end, is used for tightly bonding first fixture with pipe cutter work end, the square state end is provided with opening end and positioning end, the opening end both sides are provided with the sword groove for placing blade, the positioning end is located the opposite side of opening end, the positioning end positions first fixture in pipe cutter work end, the second fixture includes integral forming and presents L type's body and positioning body, the height size of body is greater than the height size of positioning body, the end face of body is away from positioning body and is provided with recess, the recess is adapted with the snap spring on pipe cutter positioning pin, the height size of positioning body cooperates with the clearance size inside pipe cutter telescopic rod, the width size of positioning body cooperates with the width size of first fixture's opening end.

2. The blade-changing guard jig according to claim 1, characterized by The positioning end is provided with two outward convex and mutually parallel positioning strips, which are matched with the rollers of the pipe cutter work end for positioning.

3. The blade-changing guard jig according to claim 2, wherein The two positioning strips are located between the two rollers for clamping positioning.

4. The blade-changing guard jig according to claim 1, wherein The end face of the square-shaped end away from the arc-shaped end is provided with a placing groove for placing the second fixture.

5. The blade-changing guard jig according to claim 1, wherein The recess of the second fixture body is sleeved with a transparent protective cover for preventing the snap spring on the positioning pin from splashing.

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