JP2004035115A - Feed belt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feed belt capable of preventing the degradation of work efficiency in delivering an object to be delivered by easily grasping replacement time. <P>SOLUTION: The feed belt 1 for an electric wire as a feed belt is engaged onto a driving pulley and a driven pulley, and the driving pulley delivers the electric wire 5 as the object to be delivered by the rotation drive. The feed belt 1 for the electric wire includes an elastic layer 20, a reinforcing layer 21, and a wear detection layer 22. The reinforcing layer 21, the wear detection layer 22, and the elastic layer 20 are layered in order. The elastic layer 20 is brought into contact with the electric wire 5. The reinforcing layer 21 is brought into contact with the driving pulley and the driven pulley. The wear detection layer 22 is disposed between the elastic layer 20 and the reinforcing layer 21. The wear detection layer 22 has a different hue from that of the elastic layer 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a feed belt used for a feed device that sends out a delivery such as an electric wire.
[0002]
[Prior art]
2. Description of the Related Art An electric wire feeder that sends an electric wire is used for performing various processing such as peeling on a terminal of the electric wire as a delivery. Such an electric wire feeder includes an apparatus main body, a drive pulley rotatably provided on the apparatus main body and rotationally driven by a driving source such as a motor, and a driven pulley rotatably provided on the apparatus main body. ing. In addition, the above-described electric wire feeding device includes a belt that extends over the driving pulley and the driven pulley.
[0003]
The belt is made of a known elastic material such as synthetic rubber and is formed in a ring shape. The belt is wound around a driving pulley and a driven pulley, and when the driving pulley is rotated by a driving source, the belt rotates around the driving pulley and the driven pulley. Then, the belt sends out the electric wire by contacting the electric wire as the above-mentioned delivery material.
[0004]
[Problems to be solved by the invention]
In a belt used in the above-described electric wire feeding device and the like, a portion that comes into contact with the electric wire and the like is worn out when an output such as an electric wire is sent out. When the belt is worn, the force of the belt stretched between the driving pulley and the driven pulley to hold an electric wire or the like decreases, and the dimensional accuracy of the electric wire to be sent decreases. For this reason, in the above-described wire feeder, the belt is replaced when the amount of wear of the belt exceeds a predetermined value.
[0005]
At this time, the operator has manually measured the depth of the groove caused by the wear of the belt. For this reason, the number of man-hours required for maintenance of the wire feeder and the like has been increased, and the efficiency of the step of sending out the wire as the above-described delivery has tended to be reduced.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a feed belt capable of easily ascertaining the replacement time and preventing a decrease in the efficiency of the work of sending out the delivery.
[0007]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, the feed belt according to the present invention is wound around a driving pulley that is driven to rotate and a rotatable driven pulley, and the driving pulley rotates. A feed belt that feeds the feed product, whereby an elastic layer that comes into contact with the feed product, a reinforcing layer that is laminated with the elastic layer and that comes into contact with the driving pulley and the driven pulley, and the elastic layer and the reinforcing layer And a wear detection layer provided between the elastic layer and the elastic layer and having a different hue from the elastic layer.
[0008]
A feed belt according to a second aspect of the present invention is the feed belt according to the first aspect, wherein an electric wire is sent out as the delivery.
[0009]
According to the first aspect of the present invention, when the elastic layer is worn by contact with the delivery, the wear detecting layer is exposed. Therefore, even if the elastic layer wears out, the wear detecting layer having a different hue from the elastic layer is exposed before the force for holding the electric wires of the belt becomes lower than the required quality even when the elastic layer wears, so that the degree of wear of the belt can be easily grasped. it can.
[0010]
The present invention described in claim 2 is used when sending out an electric wire as a delivery. Therefore, when the elastic layer is worn by contact with the electric wire, the wear detecting layer is exposed. Therefore, even if the elastic layer wears out, the wear detecting layer having a different hue from the elastic layer is exposed before the force for holding the electric wires of the belt becomes lower than the required quality even when the elastic layer wears, so that the degree of wear of the belt can be easily grasped. it can.
[0011]
It should be noted that the sent-out material described in the present specification indicates a product sent out by a belt, and any product can be used as long as it is sent out by a belt.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An electric wire feed belt as a feed belt according to an embodiment of the present invention will be described with reference to FIGS. The wire feed belt 1 as a feed belt is used for a wire feed device 50 shown in FIG. The wire feeder 50 constitutes the wire harness manufacturing device 51 shown in FIG.
[0013]
The wire harness manufacturing device 51 assembles wire harnesses that are routed to various machines such as automobiles. The wire harness includes a plurality of electric wires 5 (shown in FIGS. 1 to 3), a connector attached to an end of the electric wires 5, and the like. As shown in FIG. 3, the electric wire 5 is a so-called covered electric wire including a conductive core wire 52 and a covering portion 53 covering the core wire 52. In addition, the electric wire 5 is an example of the delivered matter described in this specification. The connector includes a conductive terminal fitting and a connector housing for accommodating the terminal fitting.
[0014]
A wire harness manufacturing apparatus 51 shown in FIG. 1 is an apparatus for cutting a wire 5 wound on a reel or the like into a predetermined length, removing a covering portion 53 such as an end, and attaching a terminal fitting. As shown in FIG. 1, the wire harness manufacturing device 51 includes an electric wire supply cutting unit 54, a peeling unit 55, a crimping unit 56, and a transport unit 57.
[0015]
The wire supply cutting unit 54 cuts the wire 5 wound on a reel or the like into a predetermined length, and supplies the wire 5 having the predetermined length to the transport unit 57. The peeling unit 55 removes the covering portion 53 located at the end of the electric wire 5 conveyed from the electric wire supply cutting unit 54 by the conveying unit 57. The peeling unit 55 peels the electric wire 5.
[0016]
The crimping unit 56 attaches a terminal fitting to the electric wire 5 from which the covering portion 53 such as the end transferred from the peeling unit 55 by the transfer unit 57 is removed. The transport unit 57 transports the electric wire 5 across the electric wire supply cutting unit 54, the peeling unit 55, and the crimping unit 56. After the wire supply / cutting unit 54 cuts the wire 5 wound on a reel or the like to a predetermined length, the wire harness manufacturing apparatus 51 sets the peeling unit 55 to a covering portion such as an end of the wire 5 having a predetermined length. 53 is removed, and the crimping unit 56 attaches the terminal fitting.
[0017]
The electric wire feeding device 50 shown in FIG. 2 is a device attached to the electric wire supply cutting unit 54 to send out the electric wire 5 wound on a reel toward the transport unit 57. At this time, the wire supply cutting unit 54 measures the length of the sent wire 5 based on the number of rotations of the drive pulley 10 or the driven pulleys 11 and 12, which will be described later.
[0018]
As shown in FIG. 2 and the like, the electric wire feeding device 50 includes a base wall 6 as a base portion, a pair of base tables 2, an inlet side nozzle 3, a moving mechanism (not shown), a rotation driving mechanism (not shown), And an outlet nozzle 15.
[0019]
The base wall 6 constitutes the apparatus main body of the above-described wire supply cutting unit 54. The surface of the base wall 6 is formed substantially flat along a path line for sending the electric wire 5 indicated by a dashed line P in the figure. The pass line P indicates the direction in which the electric wire 5 is sent, and is a straight line in the illustrated example. As described above, the base wall 6 is along the pass line P because the surface thereof is along the pass line P.
[0020]
Each of the pair of base tables 2 is fixed to the base wall 6 with a bolt or the like. Each of the base tables 2 is formed in a plate shape. The base table 2 is arranged with the longitudinal direction along the pass line P.
[0021]
The pair of base tables 2 position the pass lines P between each other. The pair of base tables 2 are arranged at symmetric positions with respect to the pass line P. The base 2 has a substantially flat surface. The surface of the base 2 is along the pass line P.
[0022]
The inlet side nozzle 3 is fixed to the base wall 6. The inlet side nozzle 3 is provided upstream of the pass line P from the pair of belt feed units 4 as shown in FIG. The inlet-side nozzle 3 has an electric wire guide hole 7 for guiding the electric wire 5. The electric wire guide hole 7 penetrates the base material of the inlet-side nozzle 3 along the pass line P. The electric wire 5 passes through the electric wire guide hole 7 inside.
[0023]
The inlet nozzle 3 passes the electric wire 5 through the electric wire guide hole 7 and sends out the electric wire 5 along the pass line P between the pair of belt feed units 4.
[0024]
The moving mechanism moves the pair of belt feed units 4 supported by the respective bases 2 between a position close to each other and a position away from each other. In the illustrated example, the moving mechanism moves the two belt feeding units 4 toward and away from (closes to and separates from) the belt feeding units 4.
[0025]
In the illustrated example, the moving mechanism includes an air cylinder having a telescopic rod, and a link mechanism for moving the pair of belt feed units 4 in and out in conjunction with the expansion and contraction of the rod. The moving mechanism operates the link mechanism by extending and contracting the rod of the air cylinder to move the pair of belt feed units 4 toward and away from each other.
[0026]
The moving mechanism separates the pair of belt feeding units 4, then sandwiches the electric wire 5 sent from the reel between the pair of belt feeding units 4, and brings the pair of belt feeding units 4 closer to each other again. In this way, the moving mechanism contacts and separates the pair of belt feed units 4 when sandwiching the electric wire 5 sent from the reel between the pair of belt feed units 4. Further, the moving mechanism keeps the pair of belt feed units 4 close to each other while the wire supply cutting unit 54 cuts the wire 5 to a predetermined length.
[0027]
In the present invention, at least one of the pair of belt feed units 4 may be moved, and of course, only one of the pair of belt feed units 4 is moved by the moving mechanism, and the pair of belt feed units 4 is moved. The feed unit 4 may be moved toward and away from the unit.
[0028]
The rotation drive mechanism includes a motor (not shown) as a drive source, and a pair of rotation shafts 8. The motor drives each of the rotation shafts 8 to rotate around the axis. The motor rotationally drives the rotation shaft 8 about the axis, thereby driving a drive pulley 10 described later of each of the pair of belt feed units 4. A screw groove is formed at an end of the rotating shaft 8. A nut 14 is screwed into this thread groove. The pair of rotating shafts 8 position the pass line P between each other. The pair of rotation shafts 8 are arranged at symmetric positions with respect to the pass line P, and are parallel to each other.
[0029]
Each of the pair of belt feed units 4 is supported by the base 2. As shown in FIG. 2 and the like, each of the pair of belt feed units 4 includes a belt feed base 9, a driving pulley 10, a first driven pulley 11, a second driven pulley 12, and an electric wire as a feed belt. A feed belt 1.
[0030]
The belt feeder 9 is arranged in a flat plate shape and supported on the base 2. That is, the belt feeder 9 is supported by the base wall 6. The rotating shaft 8 penetrates the belt feeder 9. An end of the rotary shaft 8 having a thread groove protrudes from the surface of the belt feeder 9.
[0031]
The drive pulley 10 is rotatably supported on the belt feeder 9 by a rolling bearing (not shown) or the like. The drive pulley 10 has a through hole (not shown) at the center. The drive pulley 10 is fixed to the rotating shaft 8 by passing the end of the rotating shaft 8 through the through hole and screwing a nut 14 to the end of the rotating shaft 8. The drive pulley 10 rotates together with the rotating shaft 8. The drive pulley 10 is rotationally driven by a motor of a rotary drive mechanism.
[0032]
The drive pulleys 10 of the pair of belt feed units 4 mutually have the pass line P positioned therebetween. The drive pulleys 10 of the pair of belt feed units 4 are arranged at symmetrical positions with respect to the pass line P.
[0033]
One first driven pulley 11 is provided for each belt feed unit 4. The first driven pulley 11 has a smaller diameter than the driving pulley 10 and a larger diameter than the second driven pulley 12. Each first driven pulley 11 is rotatably supported on the belt feeder 9.
[0034]
The first driven pulley 11 is separated from the drive pulley 10 along the pass line P. The first driven pulley 11 positions the second driven pulley 12 between the first driven pulley 11 and the drive pulley 10 along the pass line P. The first driven pulley 11 is separated from the second driven pulley 12 along a direction crossing the pass line P. The rotation center of the first driven pulley 11 is farther from the pass line P than the rotation center of the driving pulley 10.
[0035]
One or two or more second driven pulleys 12 are provided for each belt feed unit 4. In the illustrated example, three second driven pulleys 12 are provided for each belt feed unit 4. Each second driven pulley 12 has a smaller diameter than both the driving pulley 10 and the first driven pulley 11. Each second driven pulley 12 is rotatably supported on the belt feeder 9. Each of the second driven pulleys 12 is supported by the belt feeder 9 in a state where the rotational position is regulated.
[0036]
The second driven pulleys 12 of one belt feed unit 4 are arranged side by side along the pass line P. The second driven pulley 12 of one belt feed unit 4 is provided alongside the drive pulley 10 along the pass line P. That is, the drive pulley 10 and the second driven pulley 12 of one belt feed unit 4 are arranged side by side along the pass line P.
[0037]
The rotation center of the second driven pulley 12 of one belt feed unit 4 is disposed closer to the pass line P than the rotation center of the drive pulley 10. In the drive pulley 10 and the second driven pulley 12 of one belt feed unit 4, a line segment formed by connecting peripheral edges near the pass line P to each other is along the pass line P.
[0038]
The driven pulleys 11 and 12 of the pair of belt feed units 4 have a pass line P positioned therebetween. The driven pulleys 11 and 12 of the pair of belt feed units 4 are arranged symmetrically with respect to the pass line P. The interval between the second driven pulleys 12 between the pair of belt feeding units 4 is substantially equal to the interval between the driving pulleys 10 between the pair of belt feeding units 4.
[0039]
Although three second driven pulleys 12 are provided in the illustrated example, only one second driven pulley 12 may be provided, or two or more second driven pulleys may be provided in the present invention. The first driven pulley 11 and the second driven pulley 12 described above each constitute a driven pulley described in this specification.
[0040]
The electric wire feed belt 1 is a ring-shaped belt, and is stretched around a driving pulley 10, three second driven pulleys 12, and a first driven pulley 11. The wire feed belt 1 is made of an elastic and flexible synthetic resin or natural resin. The electric wire feed belt 1 is stretched around a driving pulley 10, three second driven pulleys 12, and a first driven pulley 11 under tension.
[0041]
As shown in FIG. 3, the wire feed belt 1 includes an elastic layer 20, a reinforcing layer 21, and a wear detecting layer 22. The elastic layer 20 is located outside the electric wire feed belt 1 when the electric wire feed belt 1 is wound around the driving pulley 10 and the driven pulleys 11 and 12. The elastic layer 20 comes into contact with the electric wire 5 as a delivery. The elastic layer 20 is made of a synthetic resin or the like that does not damage the outer surface of the electric wire 5 even when it comes into contact with the electric wire 5. The elastic layer 20 is stretched over the driving pulley 10 and the driven pulleys 11 and 12, and has elasticity enough to rotate around these pulleys 10, 11 and 12.
[0042]
The elastic layer 20 is preferably made of the following synthetic resin. Styrene-butadiene rubber, butadiene rubber, butyl rubber, ethylene-propylene rubber, nitrile rubber, chloroprene rubber, fluorine rubber, silicone rubber, urethane rubber and the like.
[0043]
The reinforcement layer 21 is laminated on the elastic layer 20 and is located inside the electric wire feed belt 1 when the electric wire feed belt 1 is stretched over the driving pulley 10 and the driven pulleys 11 and 12. The reinforcing layer 21 contacts the driving pulley 10 and the driven pulleys 11 and 12. The reinforcing layer 21 is provided with a plurality of teeth that mesh with the driving pulley 10, the second driven pulley 12, and the like.
[0044]
The reinforcing layer 21 is made of a synthetic resin or the like having sufficient mechanical strength so as not to be damaged even when the driving pulley 10 contacts the driven pulleys 11 and 12. Further, the reinforcing layer 21 is made of a synthetic resin or the like having sufficient mechanical strength (tensile strength) such that the reinforcing layer 21 does not break even when the tension is applied between the driving pulley 10 and the driven pulleys 11 and 12. . Further, the reinforcing layer 21 is stretched over the driving pulley 10 and the driven pulleys 11 and 12 and has elasticity enough to rotate around these pulleys 10, 11 and 12. The thickness of the reinforcing layer 21 is a thickness at which a predetermined mechanical strength (tensile strength) can be obtained.
[0045]
The reinforcing layer 21 is preferably made of the following synthetic resin. Examples include polypropylene, polyester, polyethylene, chloroprene rubber, and polyurethane rubber.
[0046]
The wear detecting layer 22 is provided between the elastic layer 20 and the reinforcing layer 21. The wear detection layer 22 is obtained by mixing a well-known pigment or the like into the synthetic resin constituting the elastic layer 20 described above. The wear detecting layer 22 is colored in a different hue (color) from the elastic layer 20.
[0047]
The electric wire feed belt 1 is obtained by sequentially laminating a reinforcing layer 21, a wear detecting layer 22, and an elastic layer 20 and bonding them with a known adhesive or the like.
[0048]
The above-described electric wire feed belt 1 is stretched over a drive pulley 10 and driven pulleys 11 and 12, and positions the electric wire 5 between mutually facing portions of a pair of belt feed units 4. The wire feed belt 1 contacts the wire 5. Then, the rotation drive mechanism rotates the drive pulley 10 to send the electric wire 5.
[0049]
The pair of belt feed units 4 having the above-described configuration has the pass line P positioned therebetween. The pair of belt feeding units 4 feed the electric wires 5 by positioning the electric wires 5 between the aforementioned portions of the electric wire feeding belt 1. In the pair of belt feed units 4, the drive pulley 10 is located on the downstream side in the feed direction of the electric wire 5 along the pass line P, and the first driven pulley 11 is located on the upstream side in the feed direction of the electric wire 5. It is arranged in a state.
[0050]
The pair of belt feed units 4 having the above-described configuration are moved closer to each other by the moving mechanism, and the driving pulley 10 is rotationally driven synchronously by the rotation driving mechanism in a state where the electric wire 5 is sandwiched between the belt feeding units. Send along the pass line P.
[0051]
The outlet side nozzle 15 is fixed to the base wall 6. The outlet side nozzle 15 is provided on the downstream side of the pass line P from the pair of belt feed units 4 as shown in FIG. The outlet nozzle 15 has an electric wire guide hole 18 for guiding the electric wire 5. The electric wire guide hole 18 penetrates the base material of the outlet nozzle 15 along the pass line P. The electric wire guide hole 18 passes the electric wire 5 inside.
[0052]
Further, a wire guide pipe 19 communicating with the wire guide hole 18 is attached to the outlet side nozzle 15. The wire guide pipe 19 is provided downstream of the pass line P of the wire guide hole 18. The electric wire guide pipe 19 passes the electric wire 5 inside. The outlet side nozzle 15 sends out the electric wire 5 passing through the electric wire guide hole 7 of the inlet side nozzle 3 and sent out by the pair of belt feeding units 4 to the downstream side of the pass line P through the electric wire guide hole 18.
[0053]
According to the present embodiment, when the elastic layer 20 is worn by contact with the electric wire 5, the wear detecting layer 22 is exposed. For this reason, even if the elastic layer 20 is worn out, the wear detecting layer 22 having a different hue from the elastic layer 20 is exposed before the force for holding the electric wires 5 of the electric wire feed belt 1 becomes equal to or less than the required quality. The wear degree of the feed belt 1 can be easily grasped. Therefore, it is possible to easily and accurately grasp the appropriate replacement time of the electric wire feed belt 1, and to prevent the efficiency of the step of sending out the electric wire 5 from being reduced.
[0054]
In the above-described embodiment, the wire feed belt 1 is used to feed out the wires 5. However, in the present invention, it goes without saying that something other than the electric wire 5 may be sent out as a delivery.
[0055]
Further, the inventor of the present invention manufactured the electric wire feed belt 1 having the above-described configuration, attached the electric wire feed device 50, and sent out the electric wires 5. At this time, the reinforcing layer 21 is made of polyurethane rubber, and the wear detecting layer 22 and the elastic layer 20 are made of urethane rubber. Further, the elastic layer 20 is transparent and the wear detecting layer 22 is red. When the electric wire feed belt 1 repeatedly sent out the electric wire 5, the wear detection layer 22 appeared from under the elastic layer 20, and the wear detection layer 22 could be recognized. Thus, it became clear that the replacement time of the wire feed belt 1 can be easily grasped.
[0056]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the elastic layer is worn by contact with the delivery, the wear detecting layer is exposed. Therefore, even if the elastic layer wears out, the wear detecting layer having a different hue from the elastic layer is exposed before the force for holding the electric wires of the belt becomes lower than the required quality even when the elastic layer wears, so that the degree of wear of the belt can be easily grasped. it can. Therefore, it is possible to easily and accurately grasp an appropriate belt replacement time, and it is possible to prevent a reduction in the efficiency of a process of sending out a delivery.
[0057]
The present invention described in claim 2 is used when sending out an electric wire as a delivery. Therefore, when the elastic layer is worn by contact with the electric wire, the wear detecting layer is exposed. Therefore, even if the elastic layer wears out, the wear detecting layer having a different hue from the elastic layer is exposed before the force for holding the electric wires of the belt becomes lower than the required quality even when the elastic layer wears, so that the degree of wear of the belt can be easily grasped. it can. Therefore, it is possible to easily and accurately grasp the appropriate replacement time of the belt, and it is possible to prevent the efficiency of the step of sending out the electric wires from being reduced.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing a wire harness manufacturing apparatus using an electric wire feed belt according to an embodiment of the present invention.
FIG. 2 is a plan view of an electric wire feeder provided with an electric wire feed belt according to one embodiment of the present invention.
FIG. 3 is a sectional view taken along line III-III in FIG. 2;
[Explanation of symbols]
1 Electric wire feed belt (feed belt)
5 Electric wires (delivery)
10 Driving pulley 11 1st driven pulley (driven pulley)
12 Second driven pulley (driven pulley)
Reference Signs List 20 elastic layer 21 reinforcing layer 22 wear detecting layer

Claims (2)

A feed belt that is wound around a drive pulley that is driven to rotate and a rotatable driven pulley, and that sends out a delivery by rotating the drive pulley;
An elastic layer in contact with the delivery;
A reinforcing layer laminated with the elastic layer and in contact with the driving pulley and the driven pulley,
A wear detection layer provided between the elastic layer and the reinforcing layer and having a different hue from the elastic layer,
A feed belt comprising: The feed belt according to claim 1, wherein an electric wire is sent out as the sending object.

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