Cable stripping device

Abstract

The object of the present invention is to solve the problems of the prior art, namely, to provide a cable sheathing stripping device that can strip the sheathing from cables of two or more different diameters. [Solution] The cable sheathing stripping device of the present invention is a device for stripping the sheathing from a cable, and comprises a main body cylinder, a guide body, a cutter blade, and a discharge window. The guide body is provided with two or more guide openings of different diameters. By rotating the guide body, the positions of the guide openings and cable insertion openings are aligned according to the diameter of the cable. Then, while inserting the cable into the cable hole, the main body cylinder is rotated around the column axis, and the sheathing is stripped off by the cutter blade, and the stripped sheathing is discharged from the discharge window.

Description

[Technical Field]

[0001] The present invention relates to a technology for stripping the insulation from cables such as electric wires, and more specifically, to a cable insulation stripping device capable of stripping insulation from cables of various diameters. [Background technology]

[0002] Power plants generate electricity ranging from several thousand to tens of thousands of volts, but to avoid losses due to electrical resistance, it is transmitted at an ultra-high voltage of several hundred thousand volts. Then, at various substations such as ultra-high voltage substations, primary substations, secondary substations, and distribution substations, the voltage is gradually reduced before being supplied to factories and other facilities, and further reduced by pole-mounted transformers before being supplied to homes.

[0003] Electricity is transmitted from power plants to substations and from substations to homes, and the role of this transmission is played by what are known as power lines. In other words, electricity is transmitted when power lines are connected to power plants, substations, homes, etc. Typical power lines consist mainly of cable conductors, insulating materials, and sheathing materials. Of these, the cable conductor is the component through which electricity actually flows and is generally made of metals such as copper or aluminum. The insulating material is the component that insulates the electricity from the conductor and is made of cross-linked polyethylene, insulating paper, insulating oil, etc. The sheathing material is the component that protects the cable and is made of polyvinyl chloride, etc.

[0004] There are various types of electric wires, and they are used appropriately depending on their application. For example, DV wires (polyvinyl chloride insulated drop service wires) are often used for low-voltage overhead service runs from utility poles to consumers, while CV wires (cross-linked polyethylene insulated vinyl sheath cable) are used in various applications, including outdoor exposed wiring, power transmission, and power distribution. Furthermore, the composition of insulation and sheathing materials differs depending on the type of electric wire; for example, DV wires and CV wires have different insulation and sheathing material compositions.

[0005] Furthermore, even when using the same type of wire, the cable diameter adopted will differ depending on the location and application. However, the cable diameters that are frequently used are generally limited; for example, the DV wire mentioned above has a diameter of 3.2 mm and a cross-sectional area of ​​14 mm. 2 , 22mm 2 While this type is frequently used, CV wire has a cross-sectional area of ​​8mm². 2 or 14mm 2 , 22mm 2 Things that are like this are frequently used.

[0006] Incidentally, electric wires are used by connecting them to various things. For example, they are connected to terminal junction boxes at power plants and substations, or simply to other electric wires, or to compression terminals to connect to various other devices. In this case, the end of the electric wire to be connected needs to have the cable conductor exposed, and to do so, the insulating material and covering material (hereinafter collectively referred to as the "covering layer") must be stripped off.

[0007] Traditionally, stripping the insulation from electrical wires involved using electrician's knives. In other words, workers would visually inspect the wires and use electrician's knives, relying on their senses to strip the insulation. However, this stripping work often required working in arduous positions, in harsh weather conditions such as wind and rain, or in extreme cold. Furthermore, the hardness of the insulation varied significantly between summer and winter, requiring workers to adjust their knife handling accordingly, which sometimes demanded experience. Consequently, there was a risk of workers mishandling the electrician's knife, resulting in injuries such as cuts to the fingers, posing a risk of workplace accidents.

[0008] In recent years, the number of experienced engineers has been decreasing due to an aging population and other factors, and the number of workers engaged in on-site work has also been declining. Therefore, there has been a strong demand for the development of a technology that allows for the safe and skill-less stripping of the insulation layer of electric wires. Various technologies for stripping the insulation layer of electric wires have been proposed to date, and for example, Patent Document 1 proposes a cable insulation stripping tool for stripping the insulation around the conductor of a cable. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 2023-104932 [Overview of the Initiative] [Problems that the invention aims to solve]

[0010] The cable sheathing stripping tool disclosed in Patent Document 1 allows workers to strip the sheathing layer of electric wires without using electrician's knives or similar tools, thus enabling safe and skill-free work. However, the cable sheathing stripping tool in Patent Document 1 is not designed to strip sheathing from cables of various diameters, nor is it compatible with electric wires with different insulating layer configurations, such as DV wires and CV wires. As mentioned above, various types of electric wires are used appropriately depending on the application, and even for the same type of electric wire, the cable diameter used varies depending on the application.

[0011] According to the technology described in Patent Document 1, for example, different cable stripping tools would need to be prepared for different diameters of electric wires. This would incur manufacturing costs and require ample storage space. Furthermore, depending on the task, it may be necessary to bring two or more cable stripping tools to the site, and it would also be necessary to switch between different cable stripping tools for each electric wire of different diameters, making the work extremely cumbersome.

[0012] The object of the present invention is to solve the problems of the prior art, namely, to provide a cable sheathing stripping device that can strip the sheathing from cables of two or more different diameters. [Means for solving the problem]

[0013] The present invention focuses on the fact that by using a guide body provided with two or more guide openings of different diameters, and inserting the cable into the guide opening corresponding to the cable's diameter, the cutter blade can properly contact the cable, and thus properly strip the coating layer. This invention is based on a completely new idea.

[0014] The cable sheathing stripping device of the present invention is a device for stripping the sheathing from a cable, and comprises a main body cylinder, a guide body, a cutter blade, and a discharge window. The cylindrical main body cylinder has a cable hole through which the cable is inserted, and the guide body attached to the end of the main body cylinder is provided with two or more guide openings of different diameters. The cutter blade, whose tip protrudes into the cable hole, is for stripping the sheathing, and the discharge window communicating with the cable hole is for discharging the sheathing stripped by the cutter blade. The cable hole is formed so as to be in the direction of the column axis of the main body cylinder and has a cable insertion opening that opens at the end face of the main body cylinder, and the guide body is rotatable around an axis (an axis parallel to the column axis of the main body cylinder). By rotating the guide body, the positions of the guide opening and the cable insertion opening are aligned according to the diameter of the cable, and when the main body cylinder is rotated around the column axis while inserting the cable into the cable hole, the sheathing is stripped by the cutter blade, and the stripped sheathing is discharged through the discharge window.

[0015] The cable stripping device of the present invention may also be configured such that guide bodies are attached to both ends of the main body cylinder. In this case, the cable hole has a cable insertion opening that opens at one end face of the main body cylinder and a cable insertion opening that opens at the other end face of the main body cylinder, and the cutter blade is provided near one cable insertion opening and near the other cable insertion opening. The discharge window is provided near one cutter blade and near the other cutter blade. However, the guide opening provided on one guide body and the guide opening provided on the other guide body are formed to allow insertion of different types of cables.

[0016] The cable sheath stripping device of the present invention can also be further provided with a slide stopper. This slide stopper is composed of a connecting body, a barrier body attached to one end of the connecting body, and an adjusting body attached to the other end of the connecting body. In this case, a guide groove is formed in the side wall of the main body cylinder in a direction parallel to the column axis. The barrier body is disposed in the cable hole, the connecting body passes through the guide groove and protrudes outside the main body cylinder, and the adjusting body is screwed and attached to the connecting body protruding outside the main body cylinder. When the adjusting body is gripped and moved along the guide groove, the barrier body moves in the cable hole, and when the adjusting body screwed to the other end of the connecting body is tightened, the barrier body is fixed to the main body cylinder. Further, when the tip of the cable inserted into the cable hole abuts against the barrier body fixed to the main body cylinder, the insertion of the cable is restricted, that is, the stripping length of the coating can be adjusted by the slide stopper.

[0017] The cable sheath stripping device of the present invention can also be such that a "stripping gauge" indicating the stripping length of the coating is attached to the side wall of the main body cylinder. In this case, while visually observing the stripping gauge, the position for fixing the barrier body to the main body cylinder can be adjusted.

[0018] The cable sheath stripping device of the present invention can also be such that a "rotating shaft" is attached to the guide body, and further a "support body" is attached to the guide port of the guide body. In this case, a "housing groove" is formed on the side surface of the main body cylinder, the rotating shaft is inserted into a "rotating shaft hole" provided in the wall body of the main body cylinder and is movable along the rotating shaft hole. Further, the support body related to the guide port aligned with the cable insertion port is inserted into the cable hole, and the support bodies related to the other guide ports are housed in the housing groove. When the guide body is pulled out together with the rotating shaft until the support body is withdrawn from the cable hole, the guide body can rotate together with the rotating shaft.

Advantages of the Invention

[0019] The cable sheath stripping device of the present invention has the following advantages. (1) It is possible to strip the coating layer of the cable without using an electrician's knife or the like. As a result, the coating layer can be stripped safely and skill - lessly. That is, it is possible to suppress the occurrence of cuts on the operator, and moreover, the efficiency of the stripping work can be improved. (2) With one cable coating stripping device, it is possible to strip the coating corresponding to cables of various diameters. Therefore, there is no need to prepare a plurality of cable coating stripping devices according to different diameters of wires, the manufacturing cost can be suppressed, and the stripping work can be easily carried out without the trouble of changing tools and the like. (3) Also, if it is equipped with two types of guide bodies, such as a guide body for DV wires and a guide body for CV wires, it is possible to strip the coating corresponding to two types of cables with one cable coating stripping device. Furthermore, the manufacturing cost can be suppressed and the stripping work can be easily carried out.

Brief Description of the Drawings

[0020] [Figure 1] (a) is a diagram showing the situation of stripping the coating of a wire using the cable coating stripping device of the present invention, and (b) is a diagram showing the wire with the coating stripped and the cable conductor exposed. [Figure 2] Perspective view showing the cable coating stripping device 100 of the present invention. [Figure 3] (a) is a side view showing the main body cylinder constituting the cable coating stripping device, and (b) is a cross - sectional view showing the main body cylinder constituting the cable coating stripping device. [Figure 4] (a) is a perspective view schematically showing the situation of stripping the coating layer of a wire using the cable coating stripping device of the present invention, and (b) is a perspective view schematically showing the wire with the cable conductor exposed and the coating layer discharged from the discharge window. [Figure 5] (a) is a front view showing the guide body for DV wires, and (b) is a front view showing the guide body for CV wires. [Figure 6] Step diagram showing the situation of changing the arrangement of the guide ports provided in the guide body for DV wires. [Figure 7]A model diagram showing three guide openings positioned slightly upwards to avoid forming concentric circles. [Figure 8] (a) is a side view showing a guide body equipped with a rotating shaft and a support, and (b) is a front view showing the main body cylinder in which a rotating shaft hole and a housing groove are formed. [Figure 9] A step diagram showing the procedure for rotating a guide body equipped with a rotation axis and a support. [Figure 10] A longitudinal cross-sectional view showing a cable stripping device equipped with a slide stopper. [Figure 11] A side view showing the main body cylinder 110, with guide grooves provided on the side of the main body wall. [Figure 12] A side view showing the main body cylinder equipped with a stripping ruler. [Modes for carrying out the invention]

[0021] An example of an embodiment of the cable sheathing stripping device of the present invention will be described with reference to the figures. Although the present invention can be used to strip the sheathing of various cables, for convenience, the example described here will be that of stripping the sheathing of electric wires such as DV wires and CV wires.

[0022] 1.Overview Figure 1(a) shows the process of stripping the insulation layer (insulating material and covering material) CT from an electric wire CB using the cable stripping device 100 of the present invention, and Figure 1(b) shows the electric wire CB with the insulation layer CT stripped off, exposing the cable conductor CD. Conventionally, stripping the insulation layer CT from an electric wire CB often required working in harsh positions, as described above. For example, in Figure 1(a), a worker is stripping the insulation layer CT from an electric wire CB, but is forced to work in an extremely narrow space near a power pole and at a high altitude. However, by using the cable stripping device 100 of the present invention, the insulation layer CT from an electric wire CB can be easily and safely stripped even in such situations, and the cable conductor CD can be properly exposed as shown in Figure 1(b).

[0023] 2. Cable sheathing stripping device Figure 2 is a perspective view showing the cable sheathing stripping device 100 of the present invention, and Figure 3 is a diagram showing the main body cylinder 110 that constitutes the cable sheathing stripping device 100. As shown in these figures, the cable sheathing stripping device 100 of the present invention is composed of a main body cylinder 110, a guide body 120, a cutter blade 130, and a discharge window 140, and may also be composed of a slide stopper 150 and the like.

[0024] The main body cylinder 110 of the cable sheath stripping device 100 is a cylindrical shape with a generally identical cross-section that continues axially, and has a hole (hereinafter referred to as "cable hole 113") formed inside for inserting an electric wire CB, and is equipped with a wall (hereinafter referred to as "main body wall 111") surrounding this cable hole 113. As shown in Figures 2 and 3, end faces 112 are formed on both sides of the main body cylinder 110. For convenience, as shown in Figure 3, the central axis of the main body cylinder 110 will be referred to as the "column axis," and one end face 112 (left side in the figure) will be specifically referred to as the "first end face 112L," and the other end face 112 (right side in the figure) will be specifically referred to as the "second end face 112R." Furthermore, the direction of the column axis toward the first end face 112L will be referred to as the "first end face side," and the direction toward the second end face 112R will be referred to as the "second end face side."

[0025] The cable hole 113 is formed to extend along the column axis, and therefore the main wall 111 has an annular (ring-shaped) cross-section and a columnar outer shape. For example, the main cylinder 110 shown in Figure 3 is formed by a cable hole 113 with a circular cross-section and a main wall 111 with a circular cross-section, and therefore its cross-section is donut-shaped. Of course, the cross-sectional shape of the main wall 111 and the cable hole 113 is not limited to a circle, but can be arbitrarily designed to be polygonal or elliptical, etc.

[0026] The cable hole 113 extending along the column axis is open on at least one of the first end face 112L and the second end face 112R. In other words, an opening (hereinafter referred to as the "cable insertion opening 114") is provided on the end face 112 of the main body cylinder 110. The electric wire CB is then inserted through this cable insertion opening 114 and pushed towards the back of the cable hole 113. As will be described later, guide bodies 120 are attached to one or both end faces 112, and the cable insertion opening 114 is provided on the end face 112 to which the guide body 120 is attached. For example, when the guide body 120 is attached only to the first end face 112L, a cable insertion opening 114 is provided at least on the first end face 112L; when the guide body 120 is attached only to the second end face 112R, a cable insertion opening 114 is provided at least on the second end face 112R; and when the guide body 120 is attached to both the first end face 112L and the second end face 112R, a cable insertion opening 114 is provided on both the first end face 112L and the second end face 112R. In the example shown in Figure 3(a), cable insertion openings 114 are provided on the first end face 112L and the second end face 112R, and a cable hole 113 is formed along the entire length of the main body wall 111, meaning the cable hole 113 is formed to penetrate the main body wall 111.

[0027] A cutter blade 130 is provided near the cable insertion opening 114. In other words, a cutter blade 130 is provided near the end face 112 where the cable insertion opening 114 is located, but it is not necessary to provide a cutter blade 130 near the end face 112 where the cable insertion opening 114 is not located (although it may be provided). This cutter blade 130 is used to strip the insulation layer CT of the electric wire CB as it moves through the cable hole 113, and therefore, as shown in Figure 3(b), the cutter blade 130 is mounted so that its tip protrudes into the cable hole 113.

[0028] Figure 4(a) is a schematic perspective view showing the process of stripping the insulation layer CT of an electric wire CB using the cable insulation stripping device 100 of the present invention, showing the process of inserting the electric wire CB from the cable insertion opening 114 of the first end face 112L and pushing it into the cable hole 113. As shown in this figure, for convenience, the direction in which the electric wire CB is pushed when stripping the insulation layer CT (to the right in the figure) will be referred to as "forward," and the opposite direction as "backward." In other words, in the case where the electric wire CB is inserted from the cable insertion opening 114 of the first end face 112L as shown in Figure 4(a), the second end face side is forward and the first end face side is backward, while in the case where the electric wire CB is inserted from the cable insertion opening 114 of the second end face 112R, the first end face side is forward and the second end face side is backward.

[0029] As the electric wire CB inserted through the cable insertion port 114 is gradually pushed in and the main body cylinder 110 is rotated around the column axis, the insulation layer CT is stripped off as it passes through the cutter blade 130. The insulation layer CT stripped off by the cutter blade 130 is then discharged through the discharge window 140, as shown in Figure 4. For this reason, the discharge window 140 is provided so as to communicate with the cable hole 113 and is located near the cutter blade 130. However, since the discharge window 140 is for discharging the insulation layer CT stripped off by the cutter blade 130, it is located at the same position as the cutter blade 130, or slightly in front of the cutter blade 130 (towards the second end face in the case of Figure 4).

[0030] To strip off the coating layer CT, the main cylinder 110 is rotated around the column axis while the electric wire CB is pushed in, as described above. As a result, the cutter blade 130 moves around the surface of the electric wire CB, and as the electric wire CB moves axially, the cutter blade 130 cuts into the coating layer CT. Therefore, the stripped coating layer CT is discharged from the discharge window 140 in a spiral shape, as shown in Figure 4. Then, as shown in Figure 4, the cable conductor CD is exposed by the amount of the coating layer CT that has been stripped off.

[0031] Since the covering layer CT of the electric wire CB is cut by the cutter blade 130 protruding into the cable hole 113 as shown in FIG. 3(b), the electric wire CB naturally needs to contact the cutter blade 130. However, if the aperture diameter of the cable hole 113 is considerably larger than the diameter of the electric wire CB, the electric wire CB cannot contact the cutter blade 130, that is, the covering layer CT cannot be cut. That being said, if the cable hole 113 is formed with an aperture diameter corresponding to the diameter of the target electric wire CB, it cannot be applied to electric wires CB with different diameters. In this case, individual devices must be manufactured for each different diameter.

[0032] Therefore, in the cable covering stripping device 100 of the present invention, the guide body 120 is attached to the end face 112 of the main body cylinder 110. This guide body 120 is a plate-like material with a slightly thick wall (for example, several cm) (hereinafter referred to as "guide base 121") provided with two or more small holes (hereinafter referred to as "guide ports 122"). However, the two or more guide ports 122 provided in one guide base 121 are each made to have a different diameter. For example, in the guide body 120 for the DV electric wire shown in FIG. 5(a), there is a guide port 122 for the electric wire CB with a diameter of 3.2 mm (hereinafter simply described as "for diameter 3.2 mm"), and a guide port 122 for the electric wire CB with a cross-sectional area of 14 mm 2 (hereinafter simply described as "for cross-sectional area 14 mm 2 "), and a guide port 122 for cross-sectional area 22 mm 2 are provided. On the other hand, in the guide body 120 for the CV electric wire shown in FIG. 5(b), there are a guide port 122 for cross-sectional area 8 mm 2 and a guide port 122 for cross-sectional area 14 mm 2 and a guide port 122 for cross-sectional area 22 mm 2 are provided.

[0033] Furthermore, the guide body 120 rotates around an axis parallel to the column axis (hereinafter referred to as the "rotation axis"), which is a different axis from the column axis of the main cylinder 110. In other words, by rotating the guide body 120 around the rotation axis, the guide opening 122 can be rotated on a plane perpendicular to the column axis, and its position can be changed. When the positions of the guide opening 122 and the cable insertion opening 114 are aligned, in order to insert the electric wire CB from the cable insertion opening 114, the electric wire CB must first be inserted through the guide opening 122. As a result, the electric wire CB is guided by the guide opening 122, or in other words, while maintaining the position of the guide opening 122, it moves through the cable hole 113, and the insulation layer CT of the electric wire CB that comes into contact with the cutter blade 130 is properly cut.

[0034] Furthermore, since the guide base 121 is provided with two or more guide openings 122 of different diameters, it is possible to select a guide opening 122 that corresponds to the diameter of the electric wire CB from which the coating layer CT is to be stripped. By aligning the position of the selected guide opening 122 with the cable insertion opening 114, the electric wire CB guided into the guide opening 122 has its coating layer CT cut by the cutter blade 130.

[0035] Figure 6 shows how the arrangement of the guide openings 122 on the guide body 120 in Figure 5(a) changes. In the upper diagram, the position of the guide opening 122 for a diameter of 3.2 mm is aligned with the cable insertion opening 114, and in the middle diagram, the cross-sectional area of ​​14 mm is increased by rotating the guide body 120. 2 Align the guide opening 122 and the cable insertion opening 114, and in the lower diagram, rotate the guide body 120 to achieve a cross-sectional area of ​​22 mm². 2 The guide opening 122 and the cable insertion opening 114 are aligned. This allows for proper cutting of the 3.2mm diameter wire CB in the upper diagram, and similarly, for a cross-sectional area of ​​14mm in the middle diagram. 2 The electric wire CB has a cross-sectional area of ​​22 mm² in the lower diagram. 2 Each of the electric wires CB can be appropriately cut. In this way, by using one cable stripping device 100, it is possible to handle electric wires CB of different diameters, as many as the number of guide openings 122 provided on the guide base 121.

[0036] As described above, by moving through the cable hole 113 while being guided by the guide opening 122, the electric wire CB comes into contact with the cutter blade 130, and its insulation layer CT is properly cut. In other words, when the guide opening 122 is aligned with the cable insertion opening 114 (hereinafter referred to as "in use"), it must be positioned so that the electric wire CB comes into contact with the cutter blade 130. For this reason, if there are two or more guide openings 122, it is preferable to position them so that they are not concentric when in use, with one being off-center. For example, in Figure 7, the guide opening 122 for a diameter of 3.2 mm and the cross-sectional area of ​​14 mm are shown. 2 Guide opening 122, cross-sectional area 22 mm 2 For convenience, the functions are shown overlapping, and in this case, the three guide openings 122 are positioned slightly upward so as not to be concentric circles.

[0037] As mentioned earlier, the structure of the insulation layer CT differs depending on the type of wire CB, such as DV wires and CV wires. When the structure of the insulation layer CT differs, the position for guiding the wire CB into the cable hole 113 also differs, meaning that the arrangement of the guide opening 122 provided on the guide base 121 must also be changed. In other words, the guide body 120 for DV wires shown in Figure 5(a) can be used for DV wires, but it cannot be used for CV wires, and in order to strip the insulation layer CT of a CV wire, it must be replaced with the guide body 120 for CV wires shown in Figure 5(b). Thus, if the guide body 120 is detachably attached to the main body cylinder 110, the main body cylinder 110 can be used in combination, which is preferable.

[0038] Alternatively, as shown in Figure 2, a guide body 120 (hereinafter specifically referred to as "first guide body 120L") can be attached to the first end face 112L, and a guide body 120 (hereinafter specifically referred to as "second guide body 120R") can also be attached to the second end face 112R. For example, a guide body 120 for DV wires (Figure 5(a)) can be attached to the first end face 112L as the first guide body 120L, and a guide body 120 for CV wires (Figure 5(b)) can be attached to the second end face 112R as the second guide body 120R. This allows the cable sheathing stripping device 100 to strip the sheathing layer CT of two types of electric wires CB and three types of diameter electric wires CB, i.e., six types of electric wires CB. In this case, a cutter blade 130 and a discharge window 140 are provided near the first end face 112L, and a cutter blade 130 and a discharge window 140 are also provided near the second end face 112R.

[0039] The guide body 120 can also be equipped with a rotating shaft 123 and a support 124, as shown in Figure 8(a). The rod-shaped (or tubular) rotating shaft 123 is attached to the guide base 121 near its center, while the support 124 is attached to the guide base 121 so as to be continuous with the guide opening 122. However, the rotating shaft 123 and the support 124 are attached so as to extend toward the main body cylinder 110 (i.e., forward).

[0040] In this case, as shown in Figure 8(b), a rotating shaft hole 117 is formed in the main body wall 111 of the main body cylinder 110, and a housing groove 118 is formed on the surface of the main body wall 111 at a position corresponding to the support 124 (i.e., the guide opening 122). The rotating shaft 123 is inserted into the rotating shaft hole 117, thereby allowing the guide body 120 to rotate together with the rotating shaft 123 around the rotating shaft (in this case, the central axis of the rotating shaft 123). However, the rotating shaft 123 is inserted in such a way that it can move along the rotating shaft hole 117. In other words, the guide body 120 can be slid away from the end face 112 (i.e., backward), and the guide body 120 can also be slid towards the end face 112 (i.e., forward). For this reason, when sliding away from the end face 112, it is advisable to provide a stopper mechanism on the rotating shaft 123 to prevent the guide body 120 from coming out of the main body cylinder 110. Furthermore, a mechanism using magnets or springs can be provided on the rotating shaft 123 to pull the guide body 120 back so that after it slides away from the end face 112, the guide body 120 naturally approaches the end face 112.

[0041] One support 124 is formed to be continuous with each guide opening 122 and has the function of guiding the electric wire CB together with the guide opening 122. For this reason, the cross-sectional shape of the support 124 is the same as that of the guide opening 122. The support 124 can also be configured to communicate with a part of the guide opening 122, such as by being a half-split tubular shape, or it can of course be a tubular shape the same as that of the guide opening 122. The support 124 corresponding to the guide opening 122 that is in use is inserted into the cable hole 113 through the cable insertion opening 114, and the support 124 corresponding to the guide opening 122 that is not in use (hereinafter referred to as "not in use") is each housed in the housing groove 118 on the surface of the main body wall 111.

[0042] Figure 9 is a step diagram showing the procedure for rotating a guide body 120 equipped with a rotating shaft 123 and a support 124. In this figure, the guide body 120 is provided with three guide openings 122, and the diagram shows the situation when the guide body 120 is rotated, starting from a state where the support 124 related to the first guide opening 122 is inserted into the cable hole 113 when in use, and the support 124 related to the second and third guide openings 122 is housed in the housing groove 118 when not in use. In this case, first, as shown in Figure 9(a), the guide body 120 is pulled out in the direction away from the end face 112 (i.e., backward) until the support 124 related to the first guide opening 122 is pulled out of the cable hole 113 and the support 124 related to the second and third guide openings 122 is pulled out of the housing groove 118. Once the support 124 no longer interferes with the main body cylinder 110, the guide body 120 rotates around the rotation axis together with the rotation axis 123, as shown in Figure 9(b), aligning the second guide opening 122 with the cable insertion opening 114.

[0043] When the second guide opening 122 and the cable insertion opening 114 are aligned, that is, the second guide opening 122 is put into use, the guide body 120 is pushed toward the end face 112 (i.e., toward the front) so that the support 124 related to the second guide opening 122 is inserted into the cable hole 113, and the support 124 related to the first and third guide openings 122 are housed in the housing groove 118, as shown in Figures 9(c) to 9(d). This makes it possible to strip the coating layer CT of the electric wire CB of the diameter corresponding to the second guide opening 122.

[0044] Figure 10 shows a cable stripping device 100 equipped with a slide stopper 150, and is a cross-sectional view taken along a plane including the column axis (a longitudinal section, so to speak). As shown in this figure, the slide stopper 150 is composed of a rod-shaped (or tubular) connecting body 152, a barrier body 151 attached to one end of the connecting body 152 (the lower end in the figure), and an adjustment body 153 attached to the other end of the connecting body 152 (the upper end in the figure). When the slide stopper 150 is provided, a guide groove 115 is provided on the side surface of the main body wall 111, as shown in Figure 11.

[0045] As shown in Figure 10, the barrier body 151 is positioned inside the cable hole 113, the connecting body 152 passes through the guide groove 115 and protrudes to the outside of the main body wall 111, and the adjusting body 153 is attached to the connecting body 152 that protrudes from the main body wall 111. This allows the connecting body 152 to move along the guide groove 115, which acts as a passage, and when the adjusting body 153 is grasped and moved, the barrier body 151 also moves inside the cable hole 113.

[0046] The adjustment body 153 can also be attached to the connecting body 152 by screwing it in. In this case, if the adjustment body 153 is loosened, the slide stopper 150 can move, but if the adjustment body 153 is tightened, the slide stopper 150 cannot move any further, meaning that the barrier body 151 is fixed inside the cable hole 113. Then, as shown in Figure 11, when the adjustment body 153 is moved along the guide groove 115 (hereinafter specifically referred to as the "main line guide groove 115M") which is formed in a direction parallel to the column axis, the barrier body 151 also moves along the column axis inside the cable hole 113. In other words, the slide stopper 150 adjusts the length of the coating layer CT of the electric wire CB that is stripped (hereinafter simply referred to as the "stripping length"), or in other words, the length of the cable conductor CD that is exposed. The procedure for adjusting the stripping length of the coating layer CT using the slide stopper 150 will be described below.

[0047] First, the adjustment body 153 is loosened. Next, the adjustment body 153 is grasped and moved along the main line guide groove 115M in the direction of the column axis. Once it reaches the desired position, the adjustment body 153 is tightened, and the barrier body 151 is fixed in the cable hole 113 at that position. Then, the insulation layer CT is stripped off while pushing the electric wire CB into the cable hole 113. At this time, when the tip of the electric wire CB comes into contact with the barrier body 151, the cable hole 113 cannot proceed any further into the hole, and thus the insulation layer CT cannot be stripped any further. As a result, it is possible to prevent the stripping of the insulation layer CT from exceeding the desired stripping length, that is, the stripping length of the insulation layer CT can be adjusted.

[0048] The desired stripping length can, of course, be set arbitrarily, but the same stripping length may be used repeatedly. In this case, as shown in Figure 11, it is advisable to provide a guide groove 115 (hereinafter referred to as "branch wire guide groove 115B") perpendicular to the column axis at a position corresponding to the frequently used stripping length. When the connecting body 152 enters the branch wire guide groove 115B, the slide stopper 150 cannot move any further in the direction of the column axis, and consequently, the barrier body 151 cannot move at least in the direction of the column axis. Therefore, the advance of the electric wire CB in the cable hole 113 can be suppressed without tightening the adjustment body 153, that is, the stripping length of the coating layer CT can be adjusted. When providing the branch wire guide groove 115B in this way, it is not always necessary to screw the adjustment body 153 onto the connecting body 152, but of course, the branch wire guide groove 115B and the adjustment body 153 can be screwed together.

[0049] Figure 12 is a side view showing the main body cylinder 110 equipped with a ruler (hereinafter referred to as "stripping ruler 116") that indicates the length dimension. This stripping ruler 116 displays the distance from the cable insertion opening 114 as a scale, that is, it indicates the stripping length of the coating layer CT. Therefore, by moving and tightening the adjustment body 153 while visually observing this stripping ruler 116, the coating layer CT can be reliably stripped to the desired stripping length. The stripping ruler 116 can be attached to the side of the main body wall 111, for example, by attaching the stripping ruler 116 as a seal to the side of the main body wall 111.

[0050] As previously described, the cable sheathing stripping device 100 of the present invention can have a first guide body 120L attached to the first end face 112L, and a second guide body 120R attached to the second end face 112R. In this case, the electric wire CB may be inserted from the cable insertion opening 114 of the first end face 112L, or from the cable insertion opening 114 of the second end face 112R. For this reason, it is advisable to attach two types of stripping guides 116 to the side of the main body wall 111. One stripping guide 116 on the main body wall 111 indicates the distance starting from the cable insertion opening 114 of the first end face 112L, and the other stripping guide 116 on the main body wall 111 indicates the distance starting from the cable insertion opening 114 of the second end face 112R. This allows the stripping length to be adjusted while visually checking one stripping guide 116 when inserting the electric wire CB from the cable insertion opening 114 of the first end face 112L and stripping the coating layer CT, and when inserting the electric wire CB from the cable insertion opening 114 of the second end face 112R and stripping the coating layer CT, the stripping length to be adjusted while visually checking the other stripping guide 116. [Industrial applicability]

[0051] The cable sheathing stripping device of the present invention can be used to strip the sheathing layer of various cables, including electric wires. According to the present invention, the sheathing layer of cables can be stripped safely and efficiently, thereby promoting the wiring work of electric wires. As a result, electric wires can be widely deployed, and thus a stable supply of electricity can be provided throughout the country. Therefore, this invention is not only industrially applicable but also has the potential to make a significant contribution to society. [Explanation of Symbols]

[0052] 100 Cable sheathing stripping device of the present invention 110 (Main body cylinder of cable stripping device) 111 Main body wall (of the main body cylinder) 112 End face (of the main cylinder) 112L (of the end faces) First end face 112R (of the end faces) second end face 113 Cable hole (on the main body tube) 114 Cable entry port (on the main body tube) 115 Guide groove (of the main body tube) 116 (Main body tube) peeling ruler 117 Rotation shaft hole (of the main body cylinder) 118 (Main body cylinder) housing groove 120 Guide body (for cable stripping device) 120L (First guide body of the guide body) 120R (of the guide bodies) Second guide body 121 Guide base (of the guide body) 122 (Guide body) Guide opening 123 (Rotation axis of the guide body) 124 (Support for the guide body) 130 (Cutter blade of cable stripping device) 140 (Discharge window of cable stripping device) 150 (Slide stopper for cable stripping device) 151 Barrier (of slide stopper) 152 (Slide stopper) connector 153 (Slide stopper) adjuster CB wire CD Cable Conductor CT coating layer

Claims

1. A device for stripping the insulation from a cable, A cylindrical body with a cable hole formed therein for inserting the aforementioned cable, A guide body attached to the end of the main body cylinder, having two or more guide openings of different diameters, A cutter blade for stripping the insulation, the tip of which protrudes into the cable hole, It comprises a discharge window that communicates with the cable hole and discharges the coating stripped off by the cutter blade, The cable hole is formed so as to be in the direction of the column axis of the main body cylinder and has a cable insertion opening that opens at the end face of the main body cylinder. The guide body is rotatable around an axis parallel to the column axis of the main body cylinder, By rotating the guide body, the positions of the guide opening and the cable insertion opening are aligned according to the diameter of the cable. Then, while inserting the cable into the cable hole, the main body cylinder is rotated around the column axis, causing the coating to be stripped off by the cutter blade, and the stripped coating to be discharged from the discharge window. A cable sheathing stripping device characterized by the following features.

2. The guide body is attached to both ends of the main body cylinder, The cable hole has a cable insertion opening that opens at one end face of the main body cylinder, and a cable insertion opening that opens at the other end face of the main body cylinder. The cutter blade is provided near one of the cable insertion openings and near the other cable insertion opening. The discharge window is provided near one of the cutter blades and near the other cutter blade, The guide opening provided in one of the guide bodies and the guide opening provided in the other guide body are each formed to allow different types of cables to be inserted. The cable sheathing stripping device according to claim 1, characterized in that it is a cable sheathing stripping device.

3. The slide stopper further comprises a connecting body, a barrier body attached to one end of the connecting body, and an adjusting body attached to the other end of the connecting body, Guide grooves are formed in the side wall of the main body cylinder in a direction parallel to the column axis. The barrier body is placed inside the cable hole, The connecting body passes through the guide groove and protrudes to the outside of the main body cylinder. The adjusting member is attached by screwing it onto the connecting member that protrudes to the outside of the main body cylinder. When the adjusting body is grasped and moved along the guide groove, the barrier body moves inside the cable hole. When the adjusting member that screws onto the other end of the connecting body is tightened, the barrier body is fixed to the main body cylinder. When the tip of the cable inserted into the cable hole comes into contact with the barrier body fixed to the main body cylinder, the insertion of the cable is restricted, and the length of the sheath stripped can be adjusted by the slide stopper. The cable sheathing stripping device according to claim 1, characterized in that it is a cable sheathing stripping device.

4. A stripping ruler indicating the stripping length of the coating is attached to the side wall of the main body cylinder. While visually observing the peeling ruler, the position in which the barrier body is fixed to the main body cylinder can be adjusted. The cable sheathing stripping device according to claim 3.

5. A rotating shaft is attached to the aforementioned guide body. Furthermore, a support body is attached to the guide opening of the guide body, which is inserted into the cable hole. A groove for housing the support is formed on the side surface of the main body cylinder. The aforementioned rotating shaft is inserted into a rotating shaft hole provided within the wall of the main body cylinder and is movable along the rotating shaft hole. The support body relating to the guide opening, which is aligned with the cable insertion opening, is inserted into the cable hole, and the support bodies relating to the other guide openings are housed in the housing grooves. When the guide body is pulled together with the rotating shaft until the support body is removed from the cable hole, the guide body becomes rotatable with the rotating shaft. The cable sheathing stripping device according to claim 1, characterized in that it is a cable sheathing stripping device.

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