JP4003992B2 - Strip equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strip apparatus for removing an outer member (or stripped member) such as a wire or cable insulation coating, and more particularly to a strip apparatus suitable for strip processing of multi-core cables and cables having a non-circular cross section.
[0002]
[Prior Art and Problems to be Solved by the Invention]
After having a plurality of strip blades that bite into a wire or cable including an insulating coating, the strip blades bite to a position that is restrained by a restraining member with respect to the wire or cable, and after being relatively rotated in that state, Strip devices are known in which the insulation coating can be removed by sliding the strip blade relatively away from the wire or cable in the length direction of the wire or cable. One example is disclosed in US Pat. No. 4,920,830.
[0003]
According to the disclosed strip device, it is difficult to remove the coating from the multi-core cable. For example, when a strip blade is bitten into a cable, when an assembly of a large number of wire conductors in the cable is pushed by the strip blade and becomes a distorted shape without becoming a circular cross section in the cable, and is relatively rotated There is a risk that the conductor may be cut by mistake, or that the coating may not be cut.
[0004]
An example of a strip device for stripping the coating of multi-core cables is disclosed in JP-A-5-292620. According to the disclosed strip device, a single blade is configured to bite into the insulation of the cable, and then the blade moves along a spiral track along the outer surface of the cable.
[0005]
However, according to the disclosed strip apparatus, the strip operation takes time and the apparatus becomes relatively large. Furthermore, this strip device cannot strip cables that are originally non-circular in cross section.
[0006]
Accordingly, the present invention provides a strip device for easily and reliably removing an outer member such as an insulation coating of a multi-core cable and a cable having a non-circular cross-sectional shape with a relatively small and simple configuration. With the goal.
[0007]
Furthermore, the present invention provides a strip in which the cutting direction of the outer member can be accurately set in the thickness direction, particularly for strip processing of the outer member such as a multicore cable and a cable having a non-circular cross-sectional shape. An object is to provide a member.
[0008]
[Means for Solving the Problems]
The present invention is a strip device that removes the outer member of the electric wire by rotating a plurality of blades bitten into the electric wire relative to the electric wire and further sliding in the length direction of the electric wire , When the plurality of blades are configured to be movable while being spring-biased toward the radial center direction of the electric wire when the plurality of blades are relatively rotated with respect to the electric wire , the strip device includes: The blade further includes a restraining member for coming into contact with the electric wire to restrain the bite, and the blades are fixed to a pair of arm members, respectively, and the restraining member is slidably disposed with respect to the arm member. Each of the arm member and the sliding member is formed with an elongated slot that is inclined in different directions, and the shaft is received at the intersection of the slots. Rutotomoni, shaft is characterized by being received within said said slot in the plate a slot is formed extending along the contact and separation direction of the blade.
[0010]
Preferably, the plurality of blades are a pair of opposed blades, and the pair of blades are fixed to driving arm means that is driven in an opening / closing direction.
[0011]
Preferably, the drive arm means is coupled to a drive cam when the pair of blades are opened and receives the strip member at an intermediate position thereof, and the pair of blades are closed with respect to the strip member. It is configured to be separated from the drive cam when it is bitten by the stripped member.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a strip device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0018]
FIG. 1 is a perspective view showing a main part of a strip device according to the present invention.
[0019]
FIG. 2 is an exploded view of each part constituting the main part shown in FIG.
[0020]
1 and 2, the strip apparatus 10 includes a strip processing unit 11 including a pair of strip blades 20 on one end side (left side in FIG. 1). Each component constituting the strip processing unit 11 is driven by a driving means (not shown) so that the strip blade 20 can remove the covering of the wire or cable, the outer conductor, or the like. The configuration of each part will be described below.
[0021]
According to FIG. 1, the pair of strip blades 20 and 20 are fixed to the ends of the arm members 21a and 21b, respectively. The arm members 21a and 21b include horizontal walls 22a and 22b and upright arms 23a and 23b extending inwardly from the respective walls. The upright arms 23a and 23b extend from a relatively front side of the middle position of the horizontal walls 22a and 22b. A roller 24 is attached to the rear end position of the horizontal walls 22a and 22b so as to be rotatable about a shaft 26. The upper and lower shafts 26 are biased inward by a spring 42. As understood from FIG. 2, openings 25a and 25b penetrating in the thickness direction are formed in the horizontal walls 22a and 22b of the arm members 21a and 21b. Sliding members 31a and 31b are received in the openings 25a and 25b so as to be slidable in the thickness direction.
[0022]
The sliding members 31a and 31b include restraining members 38a and 38b provided integrally at the front ends of the horizontal walls 32a and 32b. The restraining members 38a and 38b are provided so as to form a staircase shape. As shown in FIG. 2, the sliding members 31a and 31b also include upright arms 33a and 33b extending in the orthogonal direction from the horizontal walls 32a and 32b.
[0023]
The intermediate positions overlapping the openings 25a, 25b of the horizontal walls 22a, 22b of the arm members 21a, 21b and the horizontal walls 32a, 32b of the sliding members 31a, 31b are inclined in different directions and penetrated in the horizontal direction. Thus, elongated slots 27 and 37 are formed. As can be understood from FIG. 1, when the arm members 21a and 21b receive the sliding members 31a and 31b, the slots 27 and 37 intersect with each other and receive the shaft 36 at the intersecting position. As shown in FIG. 1, when the assembly is completed, the shaft 36 is received in a slot 41 formed in the metal plate 40 so as to extend in the longitudinal direction or the height direction. The pair of shafts 36 positioned above and below is biased inward by a spring 43.
[0024]
A guide member 51 is disposed inside the pair of arm members 21a and 21b. Guide grooves 52 extending in the height direction are formed on both side surfaces of the guide member 51. As will be understood with reference to FIGS. 1 and 2, the guide groove 52 receives the upright arms 33a and 33b of the sliding members 31a and 31b on the innermost side thereof, and the arm members 21a and 21b on the outer sides thereof. The upright arms 23a and 23b of 21b are received. Thereby, the arm members 21a and 21b and the sliding members 31a and 31b can slide only in the height direction (the direction of arrow A in FIG. 1) along the length of the guide groove 52 with respect to the guide member 51. It is understood that
[0025]
The guide member 51 is fixed to the end of the elongated shaft 60. The shaft 60 is supported by the support portion 61 so as to be rotatable about the length direction as a rotation axis. Further, on the rear side of the guide member 51 of the shaft 60, a displacement member 71 that is slidable in the axial direction is placed separately from the shaft 60. A box-shaped portion 72 is provided at the front end of the displacement member 71, and concave grooves 73 are formed at both side ends thereof. As can be seen from FIG. 1, the recessed groove 73 receives and supports the metal plate 40. Further, an engagement portion 74 having a substantially disc shape is fixed to the rear end of the displacement member 71. As illustrated, the engaging portion 74 engages with the first engaging plate 91. Therefore, the displacement member 71 and the box-shaped part 72 can be moved in the front-rear direction by sliding the first engagement plate 91 in the front-rear direction. The sliding of the first engagement plate 91 is performed by driving means (not shown).
[0026]
Further, a cam member 81 is slidable in the axial direction outside the displacement member 71. Therefore, an opening 82 is provided in the center of the cam member 81 for allowing the displacement member 71 to penetrate therethrough. The cam member 81 includes a cam surface 83 inclined on the upper and lower side surfaces. As can be seen from FIG. 1, the cam surface 83 is placed in contact with the roller 24 in the strip preparation stage after assembly. A pin 84 is driven into the side surface of the cam member 81. The pin 84 projects into the opening 82 and is received in the elongated slot 74 provided in the displacement member 71 and the elongated slot 64 provided in the shaft 60, whereby the movement of the displacement member 71 and the cam member 81 with respect to the shaft 60 is caused in the longitudinal direction. Limited to relative sliding movement. A substantially disc-shaped engagement portion 85 is provided at the rear end of the cam member 81. The engaging portion 85 engages with a second engaging plate 92 that is placed so as to extend in a direction orthogonal to the axial direction. Therefore, the cam member 81 can be moved in the front-rear direction by moving the second engagement plate 92 in the front-rear direction. The sliding of the second engagement plate 92 is also performed by driving means (not shown).
[0027]
Next, the operation of these members will be described in order with reference to other drawings.
[0028]
3 and 4 are side views showing opening and closing of the strip blade, FIG. 3 shows an open state, and FIG. 4 shows a closed state.
[0029]
First, the opening and closing of the strip blade 20 is controlled by the movement of the cam member 81. In the open state shown in FIG. 3, the cam member 81 is moved to the foremost position. At this time, the cam surface 83 abuts on the roller 24 and pushes it outward, that is, in the vertical direction in the figure. Accordingly, the arm members 21a and 21b are pushed outward. Since the movement direction of the arm members 21a and 21b is limited to only the movement in the height direction by the guide member 51 as described above, the arm members 21a and 21b are opened outward while maintaining a substantially parallel positional relationship. It should be noted that there are. A spring 42 connected to the pair of shafts 26 ensures that the roller 24 and the cam surface 83 come into contact with each other.
[0030]
The strip blade 20 can be closed by sliding the cam member 81 backward from the open state shown in FIG. That is, when the cam member 83 is moved rearward, the pair of rollers 24 placed so as to be in contact with the cam surface 83 by the spring 42 moves inward along the inclined cam surface 83 in the height direction. As a result, the strip blade 20 fixed to the ends of the arm members 21a and 21b is closed. In addition to the spring 42, a spring 43 disposed on the pair of shafts 36 provides a biasing force for moving the arm members 21a and 21b inward. The inward movement of the arm members 21a and 21b is also guided by the guide member 51. It should be noted that in the closed position shown in FIG. The movement of the cam member 81 is performed by operating the above-described second engagement plate 92 (see FIG. 1) that engages with the engagement portion 85 located at the rear end. In FIG. 4, the cam surface 83 and the roller 24 are shown in contact with each other. However, as will be described later, the two can be separated by an actual strip process.
[0031]
Thus, when the cam member 81 is moved, the arm members 21a and 21b are moved inward, whereby the strip blade 20 is engaged with the strip member by a predetermined amount. The biting of the strip blade 20 is restrained by the restraining members 38a, 38b coming into contact with the surface of the outer member. According to the strip device 10 of the present embodiment, the amount of biting according to the thickness dimension of the outer member to be stripped can be set by changing the relative position of the restraining members 38a, 38b with respect to the strip blade 20.
[0032]
FIG. 5 is a side view showing a state where the strip blade is opened (that is, an open state) in a state where the restraining member is moved to the innermost position relative to the strip blade.
[0033]
Position control of the restraining members 38a, 38b with respect to the strip blade 20 is provided by the cooperative action of the sliding members 31a, 31b including the restraining members 38a, 38b, the arm members 21a, 21b, and other members. The operation will be described with reference to FIGS. Adjustment of the relative positions of the restraining members 38a and 38b is performed by moving the plate 40 in the front-rear direction. The plate 40 is movable between the rearmost position shown in FIG. 3 and the frontmost position shown in FIG. 5 and can be maintained at any position therebetween. The movement of the plate 40 operates the first engagement plate 91 (see FIG. 1) that engages with the engagement portion 74 located at the rear end of the displacement member 71 connected through the concave groove 73 of the box-shaped portion 72. Is done.
[0034]
When the plate 40 is moved forward along the axial direction from the position of FIG. 3, the shaft 36 received in the slot 37 is moved forward while being displaced in the height direction in the slot 37. That is, as can be understood from FIG. 3 in particular, as the plate 40 moves, the shaft 36 moves inward in the slot 37 by guiding the inclined slots 27 of the arm members 21a and 21b biased inward by the springs 42. Move towards. As shown in the drawing, since the sliding members 31a and 31b receive the shaft 36 in the slot 37 inclined in the direction opposite to the slot 27, the shaft 36 is relatively slid in the length direction in the slot 37. At this time, the sliding members 31a and 31b are moved inward relative to the arm members 21a and 21b. As a result, as shown in FIG. 4, the ends of the restraining members 38 a and 38 b are arranged at positions very close to the tip of the strip blade 20. Such an arrangement is effective when the outer member to be stripped is very thin. Thus, by placing the plate 40 at an arbitrary position in the front-rear direction, it is configured to cope with strip processing of the outer member having various thicknesses.
[0035]
After that, as in the conventional example, the main part of the strip device 10 is rotated with respect to the fixed support part 61, the first and second engaging plates 91, 92, and the strip blade 20 becomes the strip member. The relative rotation is performed. While the strip blade 20 is engaged, the main part of the strip device 10 is moved relative to the strip member so that the outer member of the strip member (for example, the outer covering or the shield outer conductor) is moved. Removed.
[0036]
6 and 7 are side views showing the action of stripping the stripped member, FIG. 6 is a preparatory stage, and FIG. 7 is a view showing a state where the blade is engaged.
[0037]
According to the setting shown in FIG. 6, the above-described adjusting means is set so that the ends of the restraining members 38 a and 38 b are positioned outside the ends of the strip blades 20 and 20 by the dimension L. This dimension is the thickness dimension of the outer member of the stripped member or a dimension slightly larger than that. In the state of FIG. 6, the strip blades 20 and 20 and the restraining members 38a and 38b are opened to the maximum when the cam member 81 expands the arms 21a and 21b. As a first step of strip processing, the strip member T is placed between the opposing strip blades 20 and 20 and the restraining members 38a and 38b in this state.
[0038]
In the subsequent second step, the strip blades 20 and 20 are engaged with the stripped member T by sliding the cam member 81 rearward. When the cam member 81 moves rearward, the roller 24 moves along the inclined cam surface 83, and the arms 21a and 21b urged inward by the urging force of the spring 43 and the spring 42 move inward. As a result, the end portions of the strip blades 20 and 20 bite into the stripped member T. As described above, the biting is restrained by the ends of the restraining members 38a, 38b coming into contact with the side surface of the strip member T. However, the backward movement of the cam member 81 is not restrained at that position, and the cam member 81 further moves backward. Accordingly, the contact between the cam surface 83 of the cam member 81 and the roller 24 is released in a state in which the strip blades 20 are engaged. Thus, the strip blade 20 and the restraining members 38a and 38b whose relative positions are fixed are spring-biased inward by the spring 43 and are movable in the opening / closing direction of the strip blade 20.
[0039]
In the third step of the strip processing, the strip blade 20 and the restraining members 38a and 38b are rotated relative to the strip member T, thereby forming notches in the entire circumferential direction, and then the strip blade 20 is covered. The strip process is completed by moving in a direction away from the strip member T.
[0040]
The strip device of the present invention has an advantage that strip processing of a multi-core cable can be surely performed. This is because the strip blade 20 is configured to be movable while being spring-biased in the closing direction toward the radial center of the strip member, and secondly, the strip blades 20 and 20 The restraining members 38a and 38b are integrally assembled and are configured to be operated by a single cam member 81. The characteristic operation will be described below.
[0041]
8 and 9 are cross-sectional views showing the strip processing action of the multi-core cable, FIG. 8 is a view showing a state in which the multi-core cable forms a relatively circular cross section, and FIG. 9 is a multi-core cable. It is a figure which shows the state which distorts from a circle and comprises cross-sectional shape similar to an ellipse.
[0042]
As described above, the strip blade 20 is rotated relative to the cable after the cam blade 83 is separated from the roller 24 after it has been engaged with the cable, and thus the strip blade 20 has a predetermined length position of the cable. Cuts are made over almost the entire circumference. According to the first characteristic configuration described above, the strip blade 20 is urged and displaceable so as to be engaged with the cable by the spring 41 and the spring 42, and even when the cable does not have a complete circular cross section, The strip blade 20 moves following its shape, so that the entire circumference of the cable can be cut. Further, according to the second characteristic configuration described above, the cutting amount is accurately determined with the minimum tolerance of the relative position between the strip blades 20 and 20 and the restraining members 38a and 38b. It is possible to make a cut with an accurate depth dimension. In particular, the latter effect is effective when the outer member to be stripped is thin.
[0043]
Referring to the drawing, when the individual conductors 5 of the cable C are assembled as shown in FIG. 8, a good strip action is performed as in the conventional strip device when a substantially circular cross section is formed. However, when the multi-core cable C is used, the aggregate of the individual conductors 5 does not necessarily have a substantially circular cross section, and is pushed by the strip blade 20 as shown in FIG. It may be a similar shape. In the conventional strip apparatus, in such a case, the cable is not cut all around, and there is a risk that the strip may be defective or the individual conductors 5 may be disconnected. However, according to the strip device 10 of the present invention, as shown in FIG. 9, the strip blade 20 can be displaced in accordance with the outer shape of the cable C, and the notch is surely formed over the entire circumference by relative rotation. Is done. The relative position between the strip blade 20 and the restraining members 38a and 38b (see FIG. 1) is fixed in accordance with the thickness of the outer sheath of the cable during the strip process, so that the stripped member (or The outer conductor) is reliably cut, while the individual conductors 5 are configured not to be disconnected. The strip device 10 according to the present invention can be applied not only to such a multi-core cable C including a large number of individual conductors 5, but also to a cable including a relatively small number of core wires, and the outer covering or the shield braided wire can be combined. The present invention is also applicable to strip processing of a cable having a shape in which the surrounding cross section is not circular.
[0044]
As described above, the strip device according to the preferred embodiment of the present invention has been described in detail. However, this is merely an example, and does not limit the present invention, and various modifications can be made by those skilled in the art.
[0045]
【The invention's effect】
According to the strip device of the present invention, the plurality of blades are configured to be movable while being spring-biased toward the radial center direction of the electric wire when at least the blades are relatively rotated with respect to the electric wire. Therefore, when the blade is rotated, the blade follows the shape of the strip member to form a cut, and the insulation of the multi-core cable and the cable having a non-circular cross-sectional shape with a relatively small and simple configuration. The outer member such as the coating can be easily and reliably removed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main part of a strip device according to the present invention.
FIG. 2 is an exploded view of each part constituting the main part shown in FIG.
FIG. 3 is a side view showing the strip blade in an open state in a state in which the restraining member is placed at the outermost position with respect to the strip blade.
FIG. 4 is a side view showing the strip blade in a closed state in a state where the restraining member is placed at the outermost position with respect to the strip blade.
FIG. 5 is a side view showing the strip blade in an open state in a state in which the restraining member is placed at the innermost position with respect to the strip blade.
FIG. 6 is a side view showing a preparation stage of strip processing.
FIG. 7 is a side view showing a state where a blade in the middle of strip processing is bitten.
FIG. 8 is a cross-sectional view showing the strip processing action of the multicore cable, and shows a state in which the multicore cable forms a cross section that is relatively close to a circle.
FIG. 9 is a cross-sectional view showing the strip processing action of a multi-core cable, and shows a state in which the multi-core cable is distorted from a circle and has a cross-sectional shape similar to an ellipse.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Strip apparatus 20 Strip blade 21a, 21b Arm member (drive arm means)
38a, 38b Stopping member T Strip member (electric wire)

Claims (1)

A plurality of blades that wedged wire pivoted relative to the wire, a strip device for removing an outer member of the wire by further sliding in the longitudinal direction of the wire, said plurality of blades Is a strip device configured to be movable while being spring-biased toward the radial center of the electric wire at least when relatively rotated with respect to the electric wire ,
The strip device further includes a restraining member for restraining biting by contacting the electric wire,
The blades are respectively fixed to a pair of arm members,
The restraining member is provided integrally with a sliding member arranged to be slidable with respect to the arm member,
The arm member and the sliding member are respectively formed with elongated slots that are inclined in different directions.
A strip apparatus , wherein an axis is received at an intersection of the slots, and the axis is received in the slot of a plate formed with a slot extending along the approaching / separating direction of the blade .

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