JP2009254568A - Wire cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire cutter forming no swelling portions at a cut part of a wire when cutting the wire. <P>SOLUTION: This wire cutter 1 includes an operation handle 2 for cutting a wire 9, and a cutting part 3 attached to the operation handle 2 and formed with a wire guide passage 7 for guiding the wire 9, and cuts the wire 9 guided by the wire guide passage 7, wherein the cutting part 3 has a pair of wire clamping parts 40 provided on both sides of the wire guide passage for clamping the wire in a tensioned state, and a plurality of cutting blades 60a and 60b moving from different directions towards one point of the wire guide passage 7 between the pair of wire clamping parts 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wire cutter for cutting a wire, and more particularly to a wire cutter suitable for cutting a wire such as arc welding or thermal spraying.

  Conventionally, when performing welding or thermal spraying such as arc welding, a wire-shaped thermal spray material or a welding material (wire) is melted and fused to an object. Such a wire is wound around a drum and cut using a wire cutter such as a nipper. The cut wire is inserted into a thermal spraying device or a welding device at the tip, which is the cutting portion, and conveyed to a wire guide path in the device by a feed roller or the like. The transported wire is transported at a predetermined transport speed (supply speed) in the apparatus in accordance with the thermal spraying or welding processing speed.

  By the way, as a wire cutter for cutting a wire, for example, a wire cutter is proposed in which a gripping / operating handle is formed on one side and a cutting blade in which a wire guide path for guiding the wire is formed on the other side. (For example, refer to Patent Document 1). The wire cutter further includes an auxiliary tool (wire clamping portion) that clamps the wire in a tensioned state with a cutting blade on one side of the wire guide path in order to remove the insulating sheath covered with the wire from the wire. ing.

Japanese Patent Laid-Open No. 3-118709

  However, when a wire cutter such as a nipper is used, the wire is pressed by two cutting blades and cut. However, when the wire is cut, the vicinity of the cut portion of the wire is plastically flowed outward in the radial direction. A spatula-shaped cut portion having a bulging portion on the outside is formed. In addition, the wire cutter described in Patent Document 1 removes the insulating sheath and cuts the wire while maintaining a tensioned state with respect to the wire between the cutting blade and the wire holding portion, and this wire cutter is used. Even if it exists, the cut part of a wire will become the same shape.

  When a wire having such a cut portion is inserted into a welding or thermal spraying apparatus, the bulge portion is sharp, and the wire guide path, tip, etc. may be damaged. As a result, the wire feed speed (supply speed) in the apparatus may vary. When the fluctuation of the supply speed becomes a certain level or more, the arc and wire melting speed depending on the processing speed becomes unstable, which may cause spattering.

  Furthermore, in order to reduce the frictional resistance between the wire guide path and the wire and to keep the wire supply speed constant, the above-mentioned devices are often coated with a resin liner on the wire guide path. (Burr) may damage the surface of the resin liner, leading to a decrease in the liner life.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a wire cutter that does not have a bulging portion in the cut portion of the wire when the wire is cut.

  In order to solve the above-mentioned problems, the inventors have conducted intensive studies, and as a result, the cutting portion of the wire is kept in a tensioned state and the wire in the tensioned state is cut with a cutting blade so that the cut portion of the wire is a wire. The inventors obtained new knowledge that plastic flow is easy along the longitudinal direction, and that bulging parts such as burrs are difficult to be formed at the cut part.

  The present invention is based on the above-mentioned new knowledge, and the wire cutter according to the present invention is provided with an operation part for cutting a wire and a wire guide path attached to the operation part to guide the wire. A wire cutter for cutting the wire guided by the wire guide path, wherein the cutting part clamps the wire in a tension state on both sides of the wire guide path. And a plurality of cutting blades that move from different directions toward one point of the wire guide path between the pair of wire clamping portions.

  According to the present invention, the wire guided to the wire cutting portion is gripped by the wire holding portions on both sides of the wire guide path, and is tensioned by being pulled from both sides in the wire guide path by the pair of wire holding portions. State is secured. The wire can be cut by moving a plurality of cutting blades from different directions toward one point of the wire in this tension state. As a result, at the time of wire cutting, the wire tends to plastically flow in the tensile direction, which is the longitudinal direction of the wire, so that a cut portion having almost no portion bulging outward in the radial direction of the wire can be obtained. .

  In this way, the wire having a small bulge portion at the cutting portion can be smoothly inserted into the wire guide path of the apparatus and conveyed at a constant speed, so that the arc and wire melting rate is stabilized and the occurrence of spatter is also suppressed. be able to. Furthermore, since such a wire is difficult to damage the wire guide path in the apparatus during conveyance, it is possible to extend the life of the apparatus.

  The number of the cutting blades of the wire cutter according to the present invention is not particularly limited as long as it can cut the wire, but it is preferably composed of at least three cutting blades, more preferably. Consists of four cutting blades.

  According to the present invention, when a wire is cut with two cutting blades as in the prior art, the wire is likely to plastically flow radially outward, but three or more cutting blades are connected to the wire guide path from different directions. By moving the wire toward one point, the vicinity of the cut portion of the wire is difficult to plastically flow toward the radially outer side, and the cut end of the wire can be easily released in the longitudinal direction. Furthermore, if four cutting blades are used, the mechanism for moving the cutting blades from one side toward one point of the wire guide path is a simpler mechanism than in other cases, so the manufacturing cost of the wire cutter itself can be reduced. Can do.

  Moreover, the cutting part of the wire cutter according to the present invention further includes a pair of cutting part main bodies capable of moving apart from each other along the wire guide path, and the wire clamping part is disposed in each cutting part main body. More preferably.

  According to the present invention, since each wire holding part is arranged in each cutting part main body, according to the pair of cutting part main bodies moving away from each other along the wire guide path, the wire holding part The wire in the wire guide path can be easily tensioned.

  In addition, the wire clamping portion of the wire cutter according to the present invention includes a pair of wire pressing pieces attached to the cutting portion main body and opposed to each other with the wire guide path interposed therebetween, and the separation movement of the cutting portion main body. It is more preferable to include a proximity movement mechanism that moves the pair of wire presser pieces closer to the wire guide path in conjunction with

  According to the present invention, the wire presser pieces arranged to face each other are moved toward the wire guide path by the proximity movement mechanism in conjunction with the separation movement of the cutting portion main body with respect to the wire arranged in the wire guide path. As the pair of wire presser pieces move closer to each other, the wire with the wire guide path is clamped, and the wire presser pieces attached to the cutting section main body moving away from each other also move away from each other. It is easy to be in a tension state while pinching.

  More preferably, the wire clamping portion of the wire cutter according to the present invention further includes a presser piece urging means for urging the pair of wire presser pieces in a direction in which the pair of wire presser pieces are separated from each other.

  According to the present invention, at the time of wire cutting, the wire guide path becomes narrow due to the proximity movement of the pair of wire pressing pieces, but by providing the piece urging means, the wire holding piece is automatically separated and the next cutting is performed. Sometimes the wire can be easily guided into the wire guide path. Thereby, the operativity of a wire cutter and the workability | operativity of wire cutting can be improved.

  More preferably, the wire clamping portion of the wire cutter according to the present invention further includes load limiting means for limiting a load acting on the wire pressing pieces moved in proximity.

  According to the present invention, by providing the load limiting means, it is possible to prevent excessive compression to the wire by the wire pressing piece that moves in proximity, and deformation of the wire due to the compression.

  In addition, the cutting blade of the wire cutter according to the present invention is not particularly limited as long as a plurality of cutting blades can move simultaneously toward one point, but the structure for moving the cutting blade is not particularly limited, but is more preferable. The cutting portion of the wire cutter according to the present invention includes a cutting blade moving mechanism that moves the plurality of cutting blades toward one point of the wire guide path in conjunction with the separation movement of the pair of cutting portion main bodies. Prepare.

  According to the present invention, by providing the cutting blade moving mechanism, the wire in the wire guide path can be brought into a tension state by the wire clamping portion in conjunction with the separation movement of the pair of cutting portion main bodies, The cutting blade can be moved toward one point of the wire guide path.

  In the cutting blade of the wire cutter according to the present invention, it is more preferable that the cutting portion further includes a cutting blade urging means that urges the cutting blade moved toward the one point in a separating direction.

  According to the present invention, at the time of wire cutting, the plurality of cutting blades are moving toward one point of the wire guide path, so the wire guide path is closed, but cutting is performed by providing the cutting blade biasing means. The blade can be automatically separated and the wire can be easily guided to the wire guide path at the next cutting. Thereby, the operativity of a wire cutter and the workability | operativity of wire cutting can be improved.

  The cutting blade of the wire cutter according to the present invention is characterized in that the operation part is a pair of operation handles having a hinge part, and an operation handle part is formed on one side of the operation handle across the hinge part. More preferably, the cut portion is connected to the other side.

  According to the present invention, in particular, when the pair of cutting body is attached to the handle so as to be movable away from each other in accordance with the operation of the operating handle on one side of the handle, According to the operation, the wire arranged in the wire guide path can be easily held in a tension state. Further, when the cutting unit body is attached to the operation handle so as to be able to move away in accordance with the operation of the operation handle portion on one side of the operation handle, the operation handle can be easily changed according to the operation of the operation handle. In addition, the wire disposed in the wire guide path can be cut.

  According to the present invention, at the time of cutting a wire, it is possible to obtain a wire that does not have a bulge portion on the outer side in the wire radial direction at the wire cutting portion.

  Below, with reference to drawings, the wire cutter concerning the present invention is explained based on an embodiment.

  1 is a side external view of a wire cutter according to the present embodiment, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG. In the following description, the direction along the wire shown in FIG. 1 will be described as a left-right direction, a direction perpendicular to this as an up-down direction, and a direction perpendicular to the page as a front-rear direction. It is not intended to limit the invention.

  As shown in FIGS. 1 to 3, the wire cutter 1 according to the present invention includes a pair of operation handles (operation units) 2, 2 and a cutting unit 3 attached to the operation handle. The pair of operation handles 2 and 2 are used for cutting the wire 9 and have a hinge portion 22 connected by a pivot pin at the center. Each operation handle 2 is formed with an operation handle 21 on one side of the hinge 22 so that the operator can shake hands. The pair of operation handles 2, 2 has a spring 25 that moves the operation handle portions 21 apart after the operator grips and closes the operation handle portions 21 to each other (cuts the wire 9). Is arranged. Further, the operation handle 2 is connected to the cutting portion 3 via a connecting pin 23 on the other side of the pivot pin of the hinge portion 22.

  The cutting part 3 is a part that cuts the wire 9, and as shown in FIG. 2, the cutting part 3 includes at least a pair of cutting part main bodies 30, a wire clamping part 40, and a plurality of cutting blades 60a and 60b. Inside, a wire guide path 7 for guiding the wire 9 to be cut is formed.

  Each cutting portion main body 30 is connected to the operation handle 2 via a connecting pin 23. When the operator grips the operation handle portions 2 together, the cutting portion main body 30 can move away from each other along the wire guide path 7 by the pivot motion of the operation handles 2 and 2. It has become. The wire guide path 7 referred to in the present invention and this embodiment is a passage formed inside the cutting part 3 when the members constituting the cutting part 3 are assembled, and the wire 9 is guided. It is a route that is placed. Further, inside the cutting unit main body 30, a wire clamping unit 40, a plurality of cutting blades 60a and 60b, and cutting blade moving mechanisms 50a and 50b for moving them are provided.

  4-7 is a figure for demonstrating the wire clamping part 40. As shown in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1, FIG. 5 is a cross-sectional view taken along line V-V in FIG. 4, and FIG. 6 is a diagram illustrating the wire clamping of the wire cutter 1 according to the present embodiment. FIG. 7 is a perspective view of a pair of wire pressing pieces 41 of the wire cutter 1 according to the present embodiment.

  4-6, the wire clamping part 40 clamps the wire 9 in the tension | tensile_strength state on both sides of the wire guide path 7, and each wire clamping part 40 is arrange | positioned at each cutting | disconnection part main body 30. As shown in FIG. Yes. Each wire clamping portion 40 includes a pair of wire pressing pieces 41, 41, a driving member 42 that drives each wire pressing piece 41 toward the wire guide path 7, and a support member 43 that supports the driving member 42. , At least.

  The pair of wire pressing pieces 41, 41 are disposed to face each other with the wire guide path 7 interposed therebetween. As shown in FIG. 7, the opposing surface (one surface) 41 a of each wire pressing piece 41 has a wire holding groove 41 b having a shape that matches the shape of the wire 9 to be held in order to form the wire guide path 7. Is formed. Further, two spring insertion holes 41c are formed on the facing surface 41a with the wire clamping groove 41b interposed therebetween. In the spring insertion hole 41c, an urging spring (pressing piece urging means) 48 for urging the pair of wire pressing pieces 41, 41 is arranged in a direction in which the pair of wire pressing pieces 41, 41 are separated from each other.

  In addition, a T-shaped guide 41 d is formed at the outer end of each wire pressing piece 41 (the end side of the wire guide path 7). Further, the guide 41d is disposed in a T-shaped groove 31 (see FIG. 4) formed in the cutting portion main body 30 so that the wire pressing pieces 41, 41 can slide toward the wire guide path 7. Furthermore, an inclined surface 41e that is inclined with respect to the direction L along the wire guide path is formed on the other surface of the wire pressing piece 41, and the drive member 42 is in contact with the inclined surface 41e. .

  The drive member 42 is a member (proximity moving means) for moving the pair of wire presser pieces 41 and 41 toward the wire guide path 7, and is interlocked with the separation movement of the cutting body 30 as will be described later. Thus, a mechanism for moving the pair of wire pressing pieces 41 and 41 toward the wire guide path 7 is formed. Specifically, a slide surface (inclined surface) 42a that slides relative to the inclined surface 41e of the wire presser piece is formed on the side (one side) that contacts the wire presser piece 41. Of course, the surface 42a is also an inclined surface inclined with respect to the direction L along the wire guide path. Thus, along with the relative movement of the wire presser piece 41 and the drive member 42 along the wire guide path 7, the inclined surfaces (slide surfaces) 42a of the wire presser piece 41 and the drive member 42 slide, It is possible to obtain a proximity movement mechanism in which the pair of wire pressing pieces 41 and 41 move in directions close to each other.

  Further, the other surface of the drive member 42 is slidably in contact with the support member 43. Concave portions are formed on both mating surfaces which are the contact surfaces of the drive member 42 and the support member 43. In this recess, a load limiting spring (load limiting means) 45 is disposed so that it can be urged to both the drive member 42 and the support member 43. The load limiting spring 45 limits the load acting on the wire pressing pieces that have moved in proximity.

  Furthermore, the support member 43 is not fixed with respect to the cutting part main body 30, and is slidably disposed. A through-window 43a through which a cutting blade 60a described later passes is formed at the center. .

  FIGS. 8-11 is a figure for demonstrating the some cutting blade 60a, 60b concerning this embodiment, and the cutting blade moving mechanism 50a, 50b which moves this. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 1, FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8, and FIG. 10 is a front-rear direction of the wire cutter 1 according to the present embodiment. FIG. 11 is a perspective view of main parts of the cutting blade moving mechanism 50a of the cutting blades 60a and 60b of FIG. 11, and FIG. 11 is a perspective view of main parts of the cutting blade moving mechanism 50b of the cutting blades 60a and 60b in the vertical direction of the wire cutter 1 according to the present embodiment. FIG. 8 and 9 extract and show only necessary members related to the cutting blade.

  As shown in FIGS. 8 and 9, the four cutting blades for cutting the wire 9 are two cutting blades 60a and 60a arranged to be movable in the front-rear direction, and 2 arranged to be movable in the vertical direction. And two cutting blades 60b, 60b. All these cutting blades are provided between the wire clamping portions 40 on both sides of the wire guide path 7 (see FIG. 2). All the cutting blades are arranged so as to move from different directions (from four directions) toward one point of the wire guide path 7. Further, as shown in FIGS. 10 and 11, these cutting blades have square pillar cutting edges, and their cutting edge tips coincide with each other at one point of the wire guide path 7 at the time of cutting. (See FIG. 9).

  As shown in FIG. 10, the two cutting blades 60a, 60a in the front-rear direction are attached to the center of a pair of U-shaped blade pressing plates (cutting blade driving members) 52a, 52a, and the cutting blade moving mechanism The blade pressing plates 52a constituting 50 are arranged to face each other with the wire guide path 7 interposed therebetween.

  Four pin insertion holes 54a are formed at the four corners of the opposing surface 55a of the blade pressing plate 52a facing the pair of blade pressing plates 52a, 52a. An end of a cylindrical balance pin 56a is inserted into the pin insertion hole 54a, and the balance pin 56a is disposed so as to be movable in the axial direction thereof. Further, on the outer periphery of the balance pin 56a, a cutting blade biasing spring (cutting blade biasing means) 58a that biases the cutting blade that has moved toward one point in a separating direction is disposed.

  Further, the outer surface of the blade pressing plate 52a has an inclined surface 53a inclined with respect to the direction L along the wire guide path 7, and this inclined surface 53a is the inner surface ( (Sloped surface) so as to be relatively slidable. Then, along with the relative movement of the blade pressing plate 52 and the cutting portion main body 30 along the wire guide path 7, the inclined surfaces 53a of the blade pressing plate 52 and the cutting portion main body 30 slide to each other, and a pair of front and rear directions is formed. It is possible to obtain a proximity movement mechanism in which the cutting blades 60a and 60a move in directions close to each other.

  In addition, the inclination angle of the inclined surface 41e of the wire holding portion and the inclination angle of the inclined surface 53a of the blade pressing plate 52 are determined so that the wire pressing pieces 41 are connected to each other before the cutting blade 60a reaches one point of the wire guide path 7. Thus, the wire holding part 40 is set so that the wire 9 can be held in a tension state. This is because the distance between the wire presser pieces and the distance between the cutting blades are the amount of movement of these, and these inclination angles are set in consideration of this distance.

  As shown in FIG. 11, the cutting blade moving mechanism 50b that moves the cutting blade in the vertical direction is different in the moving direction from the cutting blade 60a and only in the shape from the blade pressing plate 52a. The cutting blade moving mechanism 50a shown in FIG. Therefore, the detailed description of the members and portions shown in FIG. 11 is omitted by changing “a” at the end of the reference numeral attached to the members and the like of FIG.

  The operation of the wire cutter 1 configured as described above will be described below. First, as apparent from FIG. 1, the operator guides the wire 9 along the wire guide path 7 formed in the cutting portion 3. Next, the worker holds the pair of operation handles 2 so that the operation handle portions 21 of the operation handle 2 are close to each other.

  At this time, since the operation handle 2 is connected by the pivot pin of the hinge portion 22, the pair of cutting body bodies 30, 30 of the cutting portion 3 disposed on the other side are arranged in the left-right direction (along the wire guide path 7. In the same direction).

  At this time, the wire clamping portions 40 attached to both sides of the wire guide path 7 exhibit the following behavior. Specifically, as shown in FIGS. 4 and 6, the wire pressing piece 41 of the wire holding portion 40 is attached to the cutting portion main body 30 so as to be movable toward the wire guide path 7, and the sliding surface of the drive member 42. Since it is in contact with the (inclined surface) 42 a, the inclined surface 41 e of the wire presser piece 41 slides relative to the inclined surface 42 a of the drive member 42.

  As a result of this sliding, the wire presser pieces 41 arranged to face each other move toward the wire guide path 7, and the wire 9 is held in the wire holding grooves 41 b and 41 b by the pair of wire presser pieces 41 and 41. Further, since the wire presser piece 41 is attached to the cutting body 30 that moves away along the wire guide path 7, the wire presser pieces 41 and 41 (wire holding parts 40 and 40 at both ends of the wire guide path 7 are provided. ) Also move away from each other. Thereby, since the wire 9 is clamped by the wire clamping portion 40 on both sides of the wire guide path 7 and is pulled from both ends, the wire 9 can be kept in a tension state.

  On the other hand, the drive member 42 and the support member 43 slide on the mating surface. Since the load limiting spring 45 is provided so as to limit the slide, that is, to limit the load acting on the wire presser pieces 41 moved in proximity, the wire 9 by the wire presser piece 41 moving in proximity is provided. And excessive deformation of the wire and deformation of the wire due to the compression can be prevented.

  Furthermore, the four cutting blades that can be disposed between the wire clamping portions 40 exhibit the following behavior with respect to the wire in a tension state. As is apparent with reference to FIGS. 8 to 11, the inclined surfaces 53 a and 53 b of the blade pressing plates 52 a and 52 b to which the four cutting blades are attached are inclined by the separation movement of the cutting body 30. Slide relative to the inner surface. With this slide, the four cutting blades move from four directions (up and down, front and back) toward one point of the wire guide path 7, and the wire 9 is cut by the cutting edges of these cutting blades.

  At this time, as shown in FIG. 10, a balance pin 56a is arranged between a pair of opposed blade holding plates 52a, 52a, and a cutting blade biasing spring (cutting blade biasing means) is provided on the outer periphery thereof. Since the 56a is provided, the cutting blades 60a and 60a can move toward one point of the wire guide path 7 with reproducibility without the blade tips moving. Thereby, the operativity of the wire cutter 1 and the workability | operativity of wire cutting can be improved. As shown in FIG. 11, although the shape of the blade pressing plate 52b is different, since the mechanism is the same as that of the blade pressing plate 52a of FIG. 10, the cutting edges of the cutting blades 60b and 60b do not fluctuate similarly. . In this manner, the vicinity of the cut portion of the wire is less likely to plastically flow toward the outside in the radial direction, and the cut end of the wire can be easily released to the flank of the blade edge in the longitudinal direction.

  Further, the four cutting blades stably move toward one point of the wire guide path 7, and the wire 9 guided to the wire cutting part 3 is in the longitudinal direction of the wire 9 at the time of wire cutting. Since it is easy to plastically flow in a certain tensile direction, it is possible to obtain a cut portion having almost no portion bulging outward in the radial direction of the wire.

  Furthermore, when cutting the wire 9, the cutting blades 60a, 60a are moving toward one point of the wire guide path 7, so that the wire guide path 7 is closed, but the cutting blade biasing spring 56a is provided. Thus, the cutting blades 60a and 60a can be automatically separated. The wire 9 can be easily guided to the wire guide path 7 at the next cutting.

  In addition, by providing the urging spring 48 in the wire holding portion 40, the wire guide path 7 is narrowed because the pair of wire pressing pieces 41 and 41 move close to each other when the wire is cut as will be described later. Since the spring 48 automatically separates the adjacent wire pressing pieces 41, 41, the wire 9 can be easily guided to the wire guide path 7 at the next cutting.

  An example using the wire cutter according to the present embodiment will be described below.

(Example)
As a wire, a diameter of 1.6 mm, Fe-0.07 mass%, C-0.17 mass%, Mn-0.1 mass%, a first thermal spraying wire made of the balance Si, Fe-0 A second wire for thermal spraying of 1 mass%, C-12 mass%, and the balance Cr was prepared, and this wire was cut using the wire cutter of this embodiment.

<Appearance evaluation>
The wire diameter of the cut part of the cut wire was measured, and it was confirmed by visual inspection of the cut part whether it swelled radially outward.

<Performance evaluation>
Using the first thermal spray wire cut with a wire cutter on the inner surface of an aluminum sleeve having an outer diameter of φ100 mm, an inner diameter of φ80 mm, and a height of 135 mm, the voltage value, current value, supply speed, and traverse speed of the thermal spray nozzle A sprayed coating having a thickness of 0.4 mm was formed as appropriate. And when there was a projection of 0.8 mm or more on the surface of the coating, this operation was repeated assuming that there was spatter. The number of spatters generated when 200 sleeves were sprayed was counted. The results are shown in Table 1. Furthermore, the lifetime of the resin liner lining the thermal spraying apparatus when the thermal spraying was continuously performed was also measured. The results are shown in Table 1.

(Comparative example)
The same first and second thermal spraying wires as those in the example were prepared, and the wires were cut using a nipper as in the past. Then, as in the example, the appearance was evaluated and the performance was also evaluated. The results are shown in Table 1.

[result]
In the example, the wire diameter of the cut part of the wire was about the same as that of the uncut part, and there was no swelling, but in the comparative example, the wire diameter of the cut part of the wire increased compared to that of the actual cut part. Was.

  Further, as is clear from Table 1, in the examples, no spatter was generated, and the resin liner of the thermal spraying apparatus was usable even after the apparatus was used for 1000 hours. On the other hand, in the comparative example, spatter was generated in 11 out of 200 sleeves. The life of the resin liner was 370 hours, which was shorter than that of the example.

  As mentioned above, although embodiment of this invention has been explained in full detail using drawing, a concrete structure is not limited to this embodiment, Even if there is a design change in the range which does not deviate from the gist of the present invention. These are included in the present invention.

  For example, in this embodiment, the operation unit that performs the wire cutting operation is an operation handle, but may be directly attached to the apparatus as long as it can be cut by the cutting unit.

The side external view of the wire cutter which concerns on this embodiment. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. The perspective view of the wire clamping part of the wire cutter which concerns on this embodiment. The perspective view of a pair of wire pressing piece of the wire cutter which concerns on this embodiment. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 1. IX-IX arrow directional cross-sectional view of FIG. The principal part perspective view of the moving mechanism of the cutting blade of the front-back direction of the wire cutter which concerns on this embodiment. The principal part perspective view of the moving mechanism of the cutting blade of the up-down direction of the wire cutter which concerns on this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1: Wire cutter, 2: Operation handle, 3: Cutting part, 7: Wire guide path, 9: Wire, 30: Cutting part main body, 40: Wire clamping part, 41: Wire presser piece, 60a, 60b: Cutting blade

Claims (9)

A wire cutter that cuts the wire guided by the wire guide path, comprising: an operation unit that performs a wire cutting operation; and a cutting unit that is attached to the operation unit and has a wire guide path that guides the wire. Because
The cutting portion moves toward a point of the wire guide path from a different direction between a pair of wire holding portions that hold the wire in tension on both sides of the wire guide path and the pair of wire holding portions. A wire cutter comprising: a plurality of cutting blades.   The cutting part further includes a pair of cutting part main bodies capable of moving apart from each other along the wire guide path, and the wire clamping part is disposed in each cutting part main body. The wire cutter according to claim 1.   The wire holding portion is attached to the cutting portion main body and is disposed in opposition to the pair of wire guide passages, and the pair of wire pressing pieces, and the pair of wire holding portions in conjunction with the separation movement of the cutting portion main body. The wire cutter according to claim 2, further comprising: a proximity moving mechanism that moves the wire pressing piece toward the wire guide path.   4. The wire cutter according to claim 3, wherein the wire clamping unit includes a presser piece urging unit that urges the pair of wire presser pieces in a direction in which the pair of wire presser pieces are separated from each other. 5.   5. The wire cutter according to claim 3, wherein the wire clamping unit further includes a load limiting unit that limits a load acting on the wire pressing pieces moved in proximity to each other.   The cutting section includes a cutting blade moving mechanism that moves the plurality of cutting blades toward one point of the wire guide path in conjunction with the separation movement of the pair of cutting section main bodies. The wire cutter in any one of 2-5.   The wire cutter according to any one of claims 1 to 6, wherein the plurality of cutting blades include at least three or more cutting blades.   The wire cutter according to any one of claims 1 to 7, wherein the cutting portion includes a cutting blade urging unit that urges the cutting blades moved toward the one point in a direction away from each other.   The operation part is a pair of operation handles having a hinge part in the center, and an operation handle part is formed on one side of the operation handle across the hinge part, and the cutting is on the other side The wire cutter according to claim 1, wherein the portions are connected.

Images