JP2012223040A - Electric wire cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire cutting device that prevents a cut surface of an electric wire from being inclined by restricting lifting of the electric wire during cutting, lightens the load on a cutting blade during the cutting, and securely cuts the electric wire.SOLUTION: An electric wire cutting device 1 includes an electric wire mount part 8 where an electric wire 41 is mounted, a cutting blade 16 for cutting the electric wire 41 mounted on the electric wire mount part 8, and a lifting device 12 which lifts the cutting blade 16. The cutting blade 16 has its cutting edge 18 provided orthogonally to a length direction of the electric wire 41 and also provided obliquely to a lifting direction of the cutting blade 16. The electric wire mount part 8 is provided with a recessed groove part 22 which is formed along the inclination of the cutting edge 18 and into which the cutting edge 18 is inserted, and an electric wire restriction part 6 which restricts displacement of the electric wire 41 in the lifting direction of the cutting blade 16 is provided on each of both sides of the electric wire mount part 8 in the length direction of the electric wire 41.

Description

  The present invention regulates the lifting and lowering of the electric wire at the time of cutting to prevent the cutting surface of the electric wire from being inclined, reduces the load applied to the cutting blade at the time of cutting, and reliably cuts the electric wire. The present invention relates to an electric wire cutting device.

  As wiring for transmitting electric power, signals, etc. to various electronic devices and electrical components mounted on automobiles and devices, etc., a plurality of wires are covered with a braid, and the braid is covered with a sheath, and a plurality of parallel wires Multi-core electric wires such as flat electric wires whose core wires are covered with an insulating resin are used. The multi-core electric wire is appropriately cut according to the length of a required path when the multi-core electric wire is routed in an automobile or an apparatus.

  The multi-core electric wire described above has a larger diameter than a single-core electric wire having a core wire of the same diameter, and is not easy to cut with a manual tool or the like, and thus is cut by a wire cutting device (for example, Patent Document 1) reference.). An electric wire cutting device disclosed in Patent Document 1 and the like includes a mounting table on which a multi-core electric wire is mounted, a cutting blade for cutting the multi-core electric wire mounted on the mounting table, and a lifting blade. The lifting / lowering device is provided, and the multi-core electric wire placed on the mounting table is cut at a desired position.

Japanese Utility Model Publication No. 6-31097

  However, the conventional wire cutting device shown in Patent Document 1 described above does not hold the multi-core electric wire in the same direction as the cutting blade descends in the longitudinal direction of the multi-core electric wire. When the multi-core electric wire is cut, the multi-core electric wire placed on the mounting table rises with the lowering of the cutting blade. For this reason, there existed a problem that the cut surface of a multi-core electric wire inclined.

  Further, in order to cut the multi-core electric wire protruding from one end of the mounting table, the multi-core electric wire protruding from one end of the mounting table as the cutting blade descends when the cutting blade cuts the multi-core electric wire. The cut part of descents. For this reason, there existed a problem that the cut surface of a multi-core electric wire inclined.

  In addition, when the multi-core electric wire is not circular in cross-section, such as a flat electric wire, the contact width between the cutting edge and the flat electric wire is widened, so the load when the cutting blade descends must be increased. I must. For this reason, there existed a problem that the load concerning a cutting blade became high.

  Moreover, in order to cut | disconnect the multicore electric wire which protruded from the end of the mounting base, the cutting location of the said multicore electric wire falls with the fall of a cutting blade. For this reason, there exists a possibility that a coating | coated part may not be cut | disconnected and there exists a possibility that a multi-core electric wire may not be cut | disconnected.

  The present invention aims to solve this problem. That is, the present invention regulates the lifting and lowering of the electric wire at the time of cutting to prevent the cutting surface of the electric wire from being inclined, reduces the load applied to the cutting blade at the time of cutting, and reliably cuts the electric wire. An object of the present invention is to provide an electric wire cutting device capable of performing the above.

  In order to solve the above problems and achieve the object, the invention described in claim 1 includes an electric wire placing portion on which an electric wire is placed, and a cutting for cutting the electric wire placed on the electric wire placing portion. An electric wire cutting device comprising a blade and a lifting device for moving the cutting blade up and down, wherein the cutting blade is provided in a direction perpendicular to the longitudinal direction of the electric wire, and the cutting edge is Provided in a direction inclined with respect to the lifting and lowering direction of the cutting blade, the wire placement portion is provided with a concave groove portion formed along the inclination of the blade edge and into which the blade edge is inserted, and the wire placement The electric wire cutting device is characterized in that electric wire restricting portions for restricting the electric wires from being displaced in the ascending / descending direction of the cutting blades are provided on both ends of the placing portion in the longitudinal direction of the electric wires.

  The invention described in claim 2 is the electric wire cutting device according to claim 1, wherein the elevating device is a pneumatic operating device driven by compressed air.

  According to the first aspect of the present invention, the wire cutting device is provided in a direction in which the cutting edge of the cutting blade is inclined with respect to the lifting and lowering direction of the cutting blade. The width of the cutting edge in contact with the electric wire is reduced. For this reason, the load at the time of cutting by lowering the cutting blade can be reduced, and the load applied to the cutting blade when cutting the electric wire can be reduced.

  In addition, since the wire placing portion is provided with a concave groove portion into which the blade edge is inserted, the cut portion of the electric wire can be on the placing stand, and is lower than the electric wire placed on the placing stand. The cutting edge of the cutting blade can be lowered. For this reason, the coating | coated part of an electric wire can be cut | disconnected reliably and an electric wire can be cut | disconnected reliably.

  Moreover, since the electric wire control part which controls that the said electric wire displaces to the raising / lowering direction of a cutting blade is each provided in the both ends side of the longitudinal direction of the electric wire mounting part, it was mounted in the mounting base. When the electric wire is cut, the electric wire is prevented from rising and sinking in the ascending / descending direction of the cutting blade. For this reason, it can prevent that the cut surface of an electric wire inclines.

  According to the invention described in claim 2, since the lifting device is a pneumatic actuator, the power source is compressed air. For this reason, since compressed air can be easily supplied to a wire cutting device with an inexpensive air compressor or the like, the equipment can be made inexpensive.

It is a perspective view of the wire cutting device concerning one embodiment of the present invention. It is explanatory drawing explaining the internal structure of the wire cutting device shown in FIG. It is a figure which shows a cutting blade. (A) is a side view, (B) is a front view, and (C) is a rear view. It is a figure which shows the blade receiving part provided with the ditch | groove part. (A) is a side view, (B) is a front view, and (C) is a rear view. It is a figure which shows the electric wire mounting part. (A) is a side view, (B) is a figure which shows a front surface and a back surface. It is a figure which shows the dimension of a cutting blade and an electric wire. It is explanatory drawing explaining the method of cutting an electric wire with an electric wire cutting device. It is a principal part expanded sectional view in the state where an electric wire is cut with a cutting blade.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, an electric wire cutting device 1 according to an embodiment of the present invention includes an installation table 2 installed on a tabletop, a support plate 3 erected from the installation table 2, and the support A support portion 5 fixed to the plate 3, an electric wire placement portion 8 fixed to the support portion 5 and the mounting base 2, and provided on both sides of the electric wire placement portion 8 and standing from the support plate 3. An electric wire regulating plate 6 as an electric wire regulating portion, an air cylinder 12 as an elevating device provided on the upper end side of the support plate 3 and fixed to the support plate 3, and provided below the air cylinder 12 And a cylinder rod 14 that is driven up and down by the air cylinder 12, and a cutting blade 16 that is provided at the tip of the cylinder rod 14 and cuts an electric wire (shown in FIG. 6) 41.

  The mounting table 2 is formed in a thick plate shape. The installation table 2 includes the support plate 3 erected from the installation table 2, the support part 5 fixed to the support plate 3, and the electric wire regulation plate 6 erected from the support plate 3. It is fixed. The mounting base 2 has a bolt hole 2a for mounting the mounting base 2 on a desk or the like (not shown), and a bolt hole (not shown) for mounting the support plate 3, the support portion 5, and the wire regulation plate 6. And are provided.

  The support plate 3 is formed in a long plate shape. The support plate 3 fixes the support portion 5, the wire restriction plate 6, and the air cylinder 12. The support plate 3 is provided with bolt holes for attaching the support portion 5, the wire regulating plate 6, and the air cylinder 12.

  The support part 5 is formed in a quadrangular prism shape. The support portion 5 is formed to have a length substantially in the middle of the support plate 3 in the longitudinal direction. The support 5 is provided with bolt holes 5a for attaching the electric wire regulating plate 6 to both side surfaces. For this reason, the strength of the wire regulating plate 6 and the strength of the support plate 3 are improved.

  As shown in FIG. 2, the electric wire placing portion 8 includes a blade receiving portion 9 that comes into contact with the cutting blade 16 when the electric wire 41 is cut. As shown in FIG. 5, the electric wire placing portion 8 is formed in a quadrangular prism shape. The electric wire placing portion 8 has an accommodating portion 28 for accommodating the blade receiving portion 9, a mounting hole 29 for attaching a bolt or the like for fixing the blade receiving portion 9 accommodated in the accommodating portion 28, and the electric wire 41. And an electric wire placement surface 8a on which is placed.

  The accommodating portion 28 is formed in a groove shape, is formed along the outer shape of the blade receiving portion 9, and the depth at which the upper end portion of the blade receiving portion 9 and the wire placement surface 8 a are on the same plane. Is formed.

  The electric wire placing surface 8a is formed on a plane in a direction orthogonal to the direction in which the cutting blade 16 moves up and down. The electric wire placement surface 8a has a satin finish on the surface by sandblasting or the like as a slip stopper for the electric wire 41 placed on the placement surface 8a.

  As shown in FIG. 4, the blade receiving portion 9 includes an inclined surface 21 formed along the inclination of the cutting edge 18 (shown in FIG. 3) of the cutting blade 16, and a concave groove portion 22 into which the cutting edge 18 is inserted. A mounting hole 26 that is accommodated in the accommodating portion 28 of the electric wire placing portion 8 and to which a bolt or the like is attached is provided. Since the blade receiving portion 9 is attached to the electric wire placing portion 8 with a bolt or the like, it can be exchanged according to the cutting blade 16.

  The inclined surface 21 is the upper surface of the blade receiving portion 9. The inclined surface 21 is formed at an inclination angle P that is inclined in a direction orthogonal to the longitudinal direction of the electric wire 41. The inclination angle P is formed at 20 degrees in the present embodiment. In addition, you may change the inclination angle P suitably with the shape, wire diameter, material, etc. of the electric wire 41 made into cutting object.

  The concave groove portion 22 is provided over the entire length of the inclined surface 21 in the longitudinal direction. The concave groove portion 22 is formed to a depth at which the cutting edge 18 of the cutting blade 16 is inserted, and is formed to be slightly wider than the thickness of the cutting edge 18. For this reason, the cutting edge 18 can be lowered below the electric wire 41 in a state where the electric wire 41 is placed on the electric wire placing portion 8. Therefore, the electric wire 41 can be cut reliably.

  As shown in FIGS. 1 and 2, the electric wire regulating plate 6 is formed in a plate shape and is provided on both side surfaces of the electric wire placing portion 8 in the longitudinal direction of the electric wire 41, and the mounting table 2 and the support. It is fixed to the plate 3 and the support portion 5. The electric wire regulating plate 6 is provided with a slit portion 6 a that holds the electric wire 41 and restricts the displacement of the electric wire 41. The electric wire regulating plate 6 is provided with a bolt hole communicating with the bolt hole 5a of the support portion 5 and a bolt hole to which a bolt for fixing to the mounting base 2 and the support plate 3 is attached. Since the wire restricting plate 6 is fixed with a bolt or the like, the width of the slit portion 6 a can be replaced with the wire restricting plate 6 corresponding to the wire diameter of the wire 41.

  The slit portion 6 a is provided in a direction orthogonal to the elevation direction of the cutting blade 16 and the longitudinal direction of the electric wire 41. The slit portion 6 a is formed slightly wider than the wire diameter of the electric wire 41. In addition, you may provide the adjustment means which adjusts the width | variety of the said slit part 6a in the slit part 6a. By providing the adjusting means, it is possible to quickly cope with the electric wires 41 having various wire diameters. As the adjusting means, known adjusting means such as adjusting screws and adjusting bolts can be used.

  As shown in FIG. 1, the air cylinder 12 is a power source compressed by a cylinder rod 14 driven by air pressure and provided so as to be movable up and down, a return spring that pulls back the cylinder rod 14, and an air compressor (not shown). This is a single-acting, single-rod air cylinder having a supply port 12a to which compressed air is supplied and an exhaust port 12b for exhausting air. Although the illustrated air cylinder 12 is a single rod type, it may be a double rod type or other pneumatic actuator.

  The cylinder rod 14 is provided with a fixing portion 15 provided at the tip of the cylinder rod 14 and fixing the cutting blade 16.

  As shown in FIG. 2, the fixing portion 15 is provided at the tip of the cylinder head 14, is formed in a rectangular parallelepiped shape, and is slidable between the wire regulating plates 6. The fixed portion 15 is provided with a stopper 17 for stopping the extrusion of the cylinder rod 14 and a cutting blade 16 for cutting the electric wire 41. Since the fixing portion 15 is formed so as to be slidable between the electric wire regulating plates 6, it prevents the cylinder rod 14 from rotating. The fixing portion 15 is fixed to the cylinder rod 14 by fastening means such as bolts.

  The stopper 17 is formed to extend from the fixed portion 15 in the longitudinal direction of the cylinder rod 14, and when the cutting blade 16 is inserted into the recessed groove portion 22 of the blade receiving portion 9, the mounting base 2 It is formed in such a length that the cylinder rod 14 is stopped by abutting against the elastic body 10a of the abutting member 10 provided in the cylinder. The stopper 17 is fixed to the fixing portion 15 by fastening means such as a bolt.

  As shown in FIG. 3, the cutting blade 16 includes a cutting edge 18 provided at the tip and provided over the entire width of the cutting blade 16. As shown in FIG. 2, the cutting blade 16 is provided with the blade edge 18 in a direction orthogonal to the longitudinal direction of the electric wire 41. The cutting blade 16 is made of an alloy tool steel material having excellent wear resistance.

  As shown in FIG. 3, the blade edge 18 is formed to be inclined with respect to a direction perpendicular to the longitudinal direction of the electric wire 41 and perpendicular to the ascending / descending direction of the cylinder rod 14. The inclination angle P of the blade edge 18 is 20 degrees in this embodiment. Note that the inclination angle P of the blade edge 18 may be appropriately changed depending on the wire diameter, shape, material, and the like of the electric wire 41 to be cut. The depth K of the blade edge 18 is formed larger than the wire diameter D of the electric wire 41 as shown in FIG. For this reason, the electric wire 41 is cut by the polished blade edge 18, and the cut surface becomes smooth.

  The electric wire 41 to be cut by the electric wire cutting device 1 configured as described above includes an electric wire having a core wire made of a single conducting wire, an electric wire having a core wire made of a plurality of conducting wires, and a braid or shield material around the wire. A covered shielded electric wire, a flat electric wire provided with a plurality of parallel core wires, and the like are used. In the case of an electric wire provided with a core wire made of a single conducting wire, the single core wire has a large diameter. In the case of an electric wire provided with a core wire composed of a plurality of conducting wires, the plurality of conducting wires are formed by being twisted. In the case of a shielded electric wire, an electric wire provided with a core wire composed of one or a plurality of conductive wires is covered with a braid or a shielding material (copper foil, aluminum foil, etc.). In the case of a flat electric wire, a plurality of electric wires provided with a core wire composed of one or a plurality of conducting wires are formed in parallel to each other. In addition, the electric wire 41 can use various electric wires, such as a large diameter electric wire, a thin diameter electric wire, a cross-sectional circular electric wire, and a cross-sectional non-circular electric wire.

  In the illustrated example, as an example, as illustrated in FIG. 8, the electric wire 41 includes a plurality of parallel (two in the illustrated example) conductive core wires 41 a and an insulating material that covers the plurality of core wires 41 a. Covering portion 41b. The core wire 41a is formed by twisting a plurality of conductive wires. The conducting wire is made of a conductive metal such as copper, aluminum, copper alloy, or aluminum alloy. The covering portion 41b is made of polyvinyl chloride resin or polyethylene resin, and is provided on the outer peripheral surface of the core wire 41a and covers the core wire 41a. The covering portion 41b that covers each core wire 41a is connected via a connecting portion 41c. In addition, the core wire 41a may be comprised from one conducting wire.

  Hereinafter, a method of cutting the above-described electric wire 41 by the electric wire cutting device 1 configured as described above will be described.

  The wire cutting device 1 includes, as ancillary equipment, an air compressor (not shown), and a measuring device that measures the wire length of the wire 41 and supplies the wire cutting device 1 with a preset desired wire length. It is attached. The measuring device is provided with a switch for operating the wire cutting device 1. In addition, you may provide the said switch in the place which performs a measurement, without using a measurement apparatus.

  First, the electric wire 41 to be cut is placed on the measuring device, and a predetermined desired wire length is measured. Then, the said electric wire 41 is supplied to the electric wire cutting device 1 so that the electric wire 41 may be cut | disconnected by the said preset desired wire length. At this time, the electric wire 41 is inserted through the slit portions 6 a of the electric wire regulating plate 6 provided on both ends of the electric wire placing portion 8 of the electric wire cutting device 1, and the electric wire 41 is placed on the electric wire placing portion 8. .

  Subsequently, the wire cylinder 41 is cut by operating the air cylinder 12 of the wire cutting device 1 by operating the switch of the measuring device. At this time, as shown in FIG. 8, the cutting blade 16 sequentially cuts one core wire 41a and the other core wire 41a and then inserts them into the recessed groove portion 22 of the blade receiving portion 9, and the stopper 17 is a contact member. The descent stops when it comes into contact with 10. Next, the cutting blade 16 closes the solenoid valve of the compressed air supply pipe supplied to the air cylinder 12 by the signal of the contact sensor of the contact member 10, and the restoring force of the return spring in the air cylinder 12 To rise.

  Subsequently, the electric wire 41 cut to a desired length is transferred to a subsequent step such as an electric wire inspection step by a transfer device or the like. And the operation mentioned above is performed repeatedly and the electric wire 41 of desired wire length is manufactured.

  According to this embodiment, the wire cutting device 1 includes the wire placing portion 8 on which the wire 41 is placed, the cutting blade 16 for cutting the wire 41 placed on the wire placing portion 8, An elevating device 12 that raises and lowers the cutting blade 16, and the cutting blade 16 is provided in a direction in which the cutting edge 18 is orthogonal to the longitudinal direction of the electric wire 41, and the cutting edge 18 is the cutting blade 16. Provided in a direction inclined with respect to the ascending / descending direction, and the wire placing portion 8 is provided with a concave groove portion 22 formed along the inclination of the blade edge 18 and into which the blade edge 18 is inserted, and On both ends of the electric wire placing portion 8 in the longitudinal direction of the electric wire 41, electric wire restricting plates 6 for restricting the electric wire 41 from being displaced in the ascending / descending direction of the cutting blade 16 are provided.

  For this reason, since the cutting edge 16 of the electric wire cutting device 1 is inclined with respect to the ascending / descending direction of the cutting blade, the electric wire cutting device 1 contacts the electric wire 41 when cutting the electric wire 41 having a non-circular cross section such as a flat electric wire. The width of the cutting edge 18 to be narrowed. Therefore, the load at the time of cutting by lowering the cutting blade 16 can be reduced, and the load applied to the cutting blade 16 when the electric wire 41 is cut can be reduced.

  Moreover, since the recessed part 22 in which the blade edge | tip 18 is inserted is provided in the electric wire mounting part 8, the cutting location of the electric wire 41 can be made on the electric wire mounting base 8, and the said electric wire mounting base 8 The cutting edge 18 of the cutting blade 16 can be lowered below the electric wire 41 to be placed. For this reason, the coating | coated part 41b of the electric wire 41 can be cut | disconnected reliably, and the electric wire 41 can be cut | disconnected reliably.

  Moreover, since the electric wire control board 6 which controls that the said electric wire 41 displaces to the raising / lowering direction of the cutting blade 16 is provided in the both ends side of the longitudinal direction of the electric wire 41 of the electric wire mounting part 8, respectively, electric wire mounting When the electric wire 41 placed on the mounting table 8 is cut, the electric wire 41 is prevented from going up and down in the raising and lowering direction of the cutting blade 16. For this reason, it can prevent that the cut surface of the electric wire 41 inclines.

  Further, since the lifting device is the air cylinder 12 as a pneumatic actuator driven by compressed air, the compressed air can be easily supplied to the wire cutting device 1 with an inexpensive air compressor or the like. Therefore, the equipment can be made inexpensive.

  Moreover, since the electric wire 41 can be cut by remote control using a switch, the wire length measuring step and the cutting step can be performed at the same place. Therefore, it is possible to reduce the number of processes and the amount of work of workers.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

1 Wire cutting device 6 Wire restriction plate (Wire restriction part)
6a Slit part 8 Electric wire placing part 9 Blade receiving part 12 Air cylinder (lifting device)
16 Cutting blade 18 Cutting edge 22 Groove portion 41 Electric wire P Inclination angle

Claims (2)

In an electric wire cutting device comprising: an electric wire placement portion on which an electric wire is placed; a cutting blade that cuts the electric wire placed on the electric wire placement portion; and a lifting device that raises and lowers the cutting blade.
The cutting blade is provided in a direction in which the cutting edge is provided in a direction perpendicular to the longitudinal direction of the electric wire, and the cutting edge is inclined with respect to the lifting and lowering direction of the cutting blade,
The wire placement portion is provided with a concave groove portion formed along the inclination of the blade edge and into which the blade edge is inserted, and
An electric wire cutting device, wherein electric wire restricting portions for restricting displacement of the electric wire in the up-and-down direction of the cutting blade are provided at both ends of the electric wire placing portion in the longitudinal direction of the electric wire. .   The electric wire cutting device according to claim 1, wherein the lifting device is a pneumatic actuator that is driven by compressed air.

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