CN105580225A - Manufacturing method of wire harness exterior protection member - Google Patents

Abstract

The object is to efficiently manufacture a wire harness exterior protector at low cost. To achieve this purpose, the manufacturing method of the wire harness exterior protection member includes the following steps: a step of forming a sheet (6) from a molten resin material (4); after forming the sheet (6), using residual heat to A step of forming a concave-convex sheet (14) by performing concave-convex processing; and a step of forming a cylindrical wire harness exterior protector (1) by rolling the concave-convex sheet. In addition, the concave-convex sheet (14) is commonly used for each type of wire harness exterior protectors (A to C), and the diameter of the circle is changed in the rounding process (24) of the concave-convex sheet to form different types of wire harness casings. Protector (1).

Description

Manufacturing method of wire harness exterior protection member

technical field

The present invention relates to a method of manufacturing a wire harness exterior protector for manufacturing a cylindrical wire harness exterior protector attached to an outer peripheral side of a wire harness that is an electric wire group such as an automobile, for example.

Background technique

Various resin components such as synthetic resin corrugated tubes, mesh tubes, protectors, locking clips with binding bands, etc. are assembled on the outer peripheral side of the harness. These corrugated tubes, mesh tubes, and protectors function as wire harness exterior protectors.

For example, Patent Document 1 describes, as a method of manufacturing a bellows, a plurality of divided molding dies are fixed to a pair of opposing endless belts, and a thermoplastic resin material is endlessly extruded from an extrusion molding machine. In the forming metal mold, the suction hole of each forming metal mold is sucked, and the forming metal mold is advanced by the rotation of the endless belt, and the bellows is continuously formed into a long shape, and cut into the required length after cooling.

In addition, in Patent Document 2, as a method of manufacturing a wire harness, it is described that a plurality of wire harness wiring boards are endlessly conveyed along a predetermined conveyance path by a belt conveyor using an endless belt, The wiring jig on the surface of the wires are wired, and synthetic resin protectors, resin tubes, locking clips and other components are assembled at the predetermined positions of the wire bundle composed of multiple wires, and the wire bundle is bundled with tape.

In addition, Patent Document 3 describes that in a wire harness assembly factory, a terminal manufacturing machine, an electric wire manufacturing machine, and a molding machine for molding a synthetic resin connector housing are used to manufacture sub-wiring harnesses, and the wire harness assembly factory also In the assembly line, a plurality of sub-harnesses are assembled to each other, and a protector and a clip for locking are assembled to the assembled plurality of sub-harnesses to form a wire harness.

In addition, in Patent Document 4, it is described that, while conveying a plurality of wiring boards in a loop along the running path of a belt conveyor, each operator wires electric wires for each wiring board, An injection molding machine near the wiring board molds synthetic resin locking clips and wire harness tubes, and assembles the locking clips and tubes to the wire harness made up of a plurality of electric wires. A synthetic resin protector, a rubber grommet, and the like are assembled to this electric wire harness in addition to the clip for locking and the tube, thereby constituting the wire harness.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2010-260241 (FIG. 4)

Patent Document 2: Japanese Patent Laid-Open No. 2002-329429 (FIG. 1)

Patent Document 3: Japanese Patent Laid-Open No. 2002-245876 (FIG. 1)

Patent Document 4: Japanese Patent Application Laid-Open No. 2012-124090 (Fig. 1, Fig. 4)

Contents of the invention

The problem that the present invention intends to solve

However, the manufacturing method of the bellows (wire harness exterior protector) described in the above-mentioned conventional patent document 1 has problems in that at least the type of dies of the extruder for continuously molding the cylindrical resin tube and the cylindrical resin tube are required. There are many types of split molding metal molds that mold resin tubes into serpentine shapes. There are so many types of bellows prepared according to various bellows with different sizes (diameters), and the cost of these equipment is high. Bellows costs will also rise.

In addition, there is a problem that many devices as follows are required at the same time: an extruder for continuously molding a cylindrical resin tube; A drive belt that moves the mold in an endless (endless) manner; a retrieval machine that retrieves the end of the serpentine-shaped resin tube forward from the molding die; and a device that measures and cuts the serpentine-shaped resin tube to an appropriate length Measuring cutting machines and bellows manufacturing processes are complicated and require a large space for equipment installation in parts factories.

In addition, in the manufacturing method of the wire harness described in the above-mentioned conventional patent document 2, for example, as shown in an example of the wire harness manufacturing process of FIG. 61 moves from the work start position S as shown by the arrow and in the laying process 59 in the first half, wires (lay) the wires on each wiring board 61, and in the component assembly process 60 in the second half, wires are wired (laid) on each wiring board 61. The outer peripheral side of the wire harness composed of a plurality of electric wires is assembled as a resin component, for example, corrugated tubes A to C which are wire harness exterior protectors. In this case, the following problems arise.

For example, there are frequently used general-purpose corrugated tubes A and B commonly used by wire harnesses A' and B' (not shown) of various car types, and wire harness C' (not shown) of a specific car model. In the case of the dedicated bellows C with low frequency of use, a large number of general-purpose bellows A and B is required, and a small number of dedicated bellows C is fine. However, in the parts factory 51, since the dedicated bellows C must be Produced by the same method as the general-purpose corrugated tubes A and B, they are packaged in the same way, and transported to the wire harness assembly factory 55 in the same way (the process of reference numeral 54 ), and the component reception 56 is performed in the wire harness assembly factory 55 in the same way, Moreover, since the parts inventory 57 is managed, there is a problem that the production cost of the wire harnesses A' to C' is high.

That is, since the general-purpose corrugated tubes A, B and the dedicated corrugated tube C are produced in the extrusion and vacuum (or pressure) molding process 52 in the parts factory 51, even if the dedicated corrugated tube C produced in small quantities Expensive molds for molding are required, and equipment and mold depreciation costs are high, resulting in high component costs. In addition, in order to package the general-purpose corrugated tubes A and B and the dedicated corrugated tube C separately in the component factory 51 (step of reference numeral 53 ), the dedicated corrugated tube C also incurs packaging costs (distribution costs).

In view of the above problems, the present invention aims to provide a method of manufacturing a wire harness exterior protector, which can efficiently manufacture a wire harness exterior protector at low cost, and can prevent the use of general-purpose and dedicated wire harness exterior protectors from causing damage. The increase in the manufacturing cost can be achieved, and the manufacturing process of the wire harness exterior protection member in the component manufacturing plant can be simplified and space-saving.

solutions to problems

In order to achieve the above object, the method for manufacturing a wire harness exterior protector according to claim 1 of the present invention is characterized in that it includes the steps of: forming a sheet from a molten resin material; The step of subjecting the sheet to concave-convex processing to form a concave-convex sheet; and the step of rounding the concave-convex sheet to form a cylindrical wire harness exterior protector.

With the above-mentioned configuration, the melted resin material is stretched with a roller to form a flat sheet, the sheet is subjected to roughness processing to form a rough sheet, and the rough sheet is rounded to form a rough shape on the surface (the back is also the same) A cylindrical harness exterior protector. Concavities and convexities are smoothly and reliably formed on the sheet in a state where the sheet is softened by residual heat when the resin material is melted. The "cylindrical shape" includes not only a circular cross section but also an elliptical cross section and a substantially rectangular cross section. The wire harness exterior protector having a concave-convex shape (similar to a serpentine shape) has flexibility.

The method for manufacturing a wire harness exterior protector according to Claim 2 is the method for manufacturing a wire harness exterior protector according to Claim 1, wherein the concave-convex sheet is used in common for each type of wire harness exterior protector. In the rounding process of the uneven sheet material, the diameter of the rounding is changed to form different types of wire harness exterior protectors.

With the above configuration, it is easy to form a plurality of kinds of wire harness exterior protectors having different diameters without distinguishing between general-purpose and special-purpose. The length of the wire harness exterior protector can be appropriately changed by measuring and cutting the sheet material or the wire harness exterior protector.

The method for manufacturing a wire harness exterior protector according to claim 3 is the method for manufacturing a wire harness exterior protector according to claim 1 or 2, wherein the sheet is formed in a component factory or a wire harness assembly factory. As for the uneven sheet, measurement cutting of the uneven sheet and formation of the wire harness exterior protector are performed in the wire harness assembly factory.

With the above configuration, the sheet is formed at the parts factory and the sheet is roughened, the uneven sheet is transported from the parts factory to the wire harness assembly factory, and the sheet is made at the wire harness assembly factory in a timely manner, for example, according to the type of wire harness to be assembled. Round processing.

Invention effect

According to the invention described in claim 1, a wire harness exterior protector similar to a conventional corrugated tube can be efficiently manufactured at low cost by a simple method of embossing and rolling a resin sheet. In addition, no whitening occurs on the sheet, and unevenness can be formed smoothly and reliably. In addition, since reheating of the sheet during roughening is not required, equipment can be simplified and space can be saved.

According to the invention described in claim 2, by using a resin sheet in common, it is possible to efficiently manufacture different types of wire harness exterior protectors at low cost, and it is possible to suppress the occurrence of problems caused by using general-purpose and dedicated wire harness exterior protectors. Manufacturing costs increase.

According to the invention described in claim 3, the manufacturing process of the wire harness exterior protector in the component manufacturing factory can be simplified and space-saving, and the harness exterior protector can be produced in a timely manner according to the type of wire harness in the wire harness assembly factory.

Description of drawings

1( a ) to ( c ) are explanatory views showing one embodiment of the method for manufacturing the wire harness exterior protection material of the present invention in the order of steps ((a) and (c) are side views, and (b) is a perspective view).

Fig. 2 is a perspective view showing one form of the wire harness assembling process.

Fig. 3 is a perspective view showing one form of the embossing machine used in the step of Fig. 1(a) viewed from the front side.

Fig. 4 is a perspective view showing one form of the uneven sheet formed by the step of Fig. 1(c) viewed from above.

Fig. 5 shows one form of the sheet material circular processing machine used in the step of Fig. 1(c), where (a) is a perspective view and (b) is a side view.

Fig. 6 is a perspective view showing one form of the completed wire harness exterior protector.

Fig.7 (a)(b) is explanatory drawing (side view) of the main part which showed the other form of the manufacturing method of the wire harness exterior protection material in order of a process.

FIG. 8 is an explanatory diagram (plan view) showing an application example of the manufacturing method of the wire harness exterior protection material.

FIG. 9 is an explanatory diagram (plan view) showing an example of a conventional method of manufacturing a wire harness exterior protector.

Explanation of reference signs

1. A～C: wire harness protection tube (wire harness outer protection parts)

4: resin parts

6: sheet

8: Embossing process (embossing machine)

10, 11: Roller

12: Convex part of the roller

13: The concave part of the roller

14: Embossed sheet

16: Convex part of sheet

23: Measuring the cutting process (cutter)

24: Rolling process

36: Component Factory

37: Wire harness assembly factory

detailed description

One Embodiment of the manufacturing method of the wire harness exterior protection material of this invention is shown in FIGS. 1-6.

As shown in FIG. 1(a), the manufacturing method of the wire harness exterior protection member 1 (FIG. 6) first melts the thermoplastic resin material with the extruder 2, and extrudes the molten resin material 4 from the downward nozzle 3 of the extruder 2. Between the front and rear pair of stretching rolls 5 made of metal, the flat sheet 6 is continuously extended in a planar manner by the pair of stretching rolls 5 . The flat sheet 6 is conveyed to an embossing (serpentine) processing machine 8 ahead, that is, an embossing process, passing through an adjacent conveying roll 7 with residual heat during extrusion.

The embossing machine 8 includes: a pair of front and rear guide plates 9; a pair of metal embossing rollers 10, 11 disposed up and down between the front and rear pair of guide plates 9; and a pair of embossing rollers 10 , 11 An unillustrated drive unit that rotates in opposite directions as indicated by the arrows (the upper roller 10 is counterclockwise, and the lower roller 11 is clockwise).

Since the flat sheet 6 is softened by residual heat during extrusion, the embossing machine 8 can be used to smoothly, easily and reliably form a plurality of (many) unevennesses on the flat sheet 6 . The embossing (concave-convex) process and the molding of the sheet 6 can be continuously performed by utilizing residual heat.

In FIG. 3 , an example of a pair of upper and lower embossing rolls 10, 11 is shown. One (lower) roll 11 has a plurality of rhombus-shaped convex portions 12 arranged in an oblique direction on the outer peripheral side of a cylindrical roll shaft 11a. The other (upper side) roller 10 has a plurality of rows of processed parts 11b formed by arranging a plurality of rhombic frame-shaped recesses 13 in an oblique direction on the outer peripheral side of the cylindrical roller shaft 10a. By providing the rhombic unevenness 12,13 in the processing portion 10b, 11b, the uneven sheet 14 can be moved from the processing portion 10b, 11b in the diagonal direction (the direction of rotation of the rollers 10,11) of the rhombic unevenness 12,13. Peel off (detach) smoothly.

The embossed concave-convex sheet 14 can be curved like the state after measurement and cutting (measurement and cutting described later) shown in FIG. 12 a plurality of rhombus-shaped recesses 15 compression-molded; and a rhombus-shaped frame-shaped plurality of protrusions 16 compression-molded from the plurality of recesses 13 of the upper roller 10 ( FIG. 3 ).

The uneven sheet 14 embossed by the process of FIG. A plurality of (in this example, two) cutters shown in the figure are divided (slitting) into a plurality (in this example, three) in the sheet width direction, and are wound into rolls by each winding machine 18, Each uneven sheet roll 19 is formed. All steps of resin extrusion 2 , roll processing 5 , embossing 8 , and sheet winding 19 in FIG. 1( a ) are indicated by reference numeral 21 .

As shown in FIG. 1( b ), each concave-convex sheet roll 19 is collected and placed in a box 20 , and then transferred to the next step of measuring and cutting and sheet rolling process 28 in FIG. 1( c ). The measurement cutting is carried out as follows: in the measurement cutting machine, a plurality of uneven sheet rolls 19 are arranged side by side, and the uneven sheet is discharged from the sheet roll 19 to the processing table 22 in a planar manner and cut into the required shape with the cutter 23. length.

As shown in Figure 4, the concave-convex sheet 14 is cut into a rectangle, and the front and rear short sides 14a of the concave-convex sheet 14 are along the extending direction of the long diagonal line L1 of each convex portion 16 of the diamond frame shape, and the concave-convex sheet 14 The left and right (widthwise) long side portions 14b of each convex portion 16 are along the extending direction of the short diagonal line L2 of each convex portion 16 . The lengths of the four sides of each convex part 16 are the same, and the opposite two sides are respectively parallel, and each convex part 16 intersects and contacts in a grid shape.

The uneven sheet 14 to be measured and cut is rolled into a cylindrical shape in the width direction by the sheet rolling machine 24 of FIG. In the wire harness protection tube 1 of this example, the long diagonal line L1 of each rhombus-shaped protrusion 16 is along the tube circumferential direction, and the short diagonal line L2 is along the tube axial direction. Due to the convex (concave-convex) shape, the harness protective tube 1 is easily bent in a direction intersecting the axial direction. The bendability is, for example, the same level as that of a conventional corrugated tube.

When no bending is required, the sheet 6 ( FIG. 1 ) does not have the unevenness 15 , 16 , and the flat sheet 6 is rounded to form a tubular wire harness protection tube. It is also possible to make one wire harness protection tube partially (for example, only the central portion in the longitudinal direction, or two places at the front and rear) concave-convex (bendable), and the other parts have a smooth shape without concave-convex (bendable).

Fig. 5 (a) (b) shows an example of sheet material rolling process, the embossed sheet material 14 after being cut is inserted into the pre-heated special rolling block 25 from the entrance 26a of slit shape, thereby along The guide wall 26 having a circular cross-section following the inlet 26 a gradually rolls the uneven sheet 14 into a tubular shape in the sheet width direction.

The concavo-convex sheet 14 is easily softened by heating with a heater or the like and rolled into a circle, and the wire harness protection tube 1 is cooled by natural cooling or the like after the rounding process so that the wire harness protection tube 1 maintains a predetermined diameter. The diameter (outer diameter and inner diameter) of the wire harness protection tube 1 can be appropriately set by changing, for example, the inner diameter of the curved guide wall 26 of the sheet rolling machine (circling process) 24 . The number of rounds (number of rolls) of the uneven sheet 14 is one round or more.

In the example of FIG. 4 , on the sheet 6 ( FIG. 1 ), a plurality of linear protrusions 16 intersecting in an oblique rhombus are formed, and the concave-convex sheet 14 is rounded (rolled) from the long side 14 b side, The wire harness protection tube 1 having a plurality of linear protrusions 16 intersecting in an oblique rhombus on the surface (the back is also the same) as in FIG. 6 is formed, but for example, in FIG. Form a plurality of line-shaped protrusions (16) not in a rhombus but in a square or a rectangle, and roll the concave-convex sheet (14) into a circle to form a plurality of line-shaped protrusions intersecting in a square or a rectangle. (16) harness protection tube (1). The concavo-convex shape is close to the serpentine shape of a conventional bellows (not shown).

In FIG. 1( c ), the rounded wire harness protection tube 1 is dropped and accommodated in the lower container 27 . For example, the operator transports the wire harness protection tube 1 for each container 27 to an unillustrated component yard in the wire harness assembly step 38 of FIG. 2 .

In the wire harness assembly step 38 , the assembly worker 29 assembles the wire harness protection tube 1 to a necessary portion of the wire harness (plurality of electric wires) 31 on the wiring table 30 . In assembling the wire harness protection tube 1 , for example, an unillustrated winding end portion (slit) of the wire harness protection tube 1 is elastically opened, and the wire harness 31 is inserted into the wire harness protection tube 1 through the gap. The gap closes elastically. The branch line of the wire harness 31 can also be inserted through the end opening 1 a ( FIG. 6 ) of the wire harness protection tube 1 .

Resin extrusion step 2 in Fig. 1(a) → sheet forming step 5 → embossing step 8 and slitting (dividing) step (17), and packing step of sheet roll 19 in Fig. 1(b) 20 is performed in a parts factory, and the measurement and cutting process 23→sheet coiling process 24 in FIG. 1(c) is performed in a certain wire harness assembly factory in the wire harness assembly process 38 in FIG. 2 . Alternatively, all the steps of FIG. 1( a ) to ( c ) may be performed at a wire harness assembly factory (in this case, the packing step 20 of FIG. 1( b ) may not be necessary).

In above-mentioned Fig. 1, the example of forming concavo-convex 15, 16 on the sheet material 6 by the residual heat of sheet material extruding process (2) has been described, but for example also can be shown in the example of Fig. 7, with Fig. 7 (a) After the sheet material 6 is formed by the extruder 2 and the front and rear pair of rollers 5, the sheet material 6 is divided and wound into a sheet material roll 33 with a slitter processing machine 32, and then the sheet material is rolled into a sheet material roll 33 in the same manner as in Fig. 1(b). The material roll 33 is packaged and transported to the embossing machine 8 of FIG. 7( b ) for embossing (serpentine) processing.

However, since the waste heat after sheet extrusion processing is not utilized, the sheet 6 must be preheated before embossing, which may complicate the process, troublesome work, and whitening of the sheet 6 during embossing.

The apparatus in FIG. 7( b ) has an embossing machine 8 , a sheet rounder 24 in front of it (sheet conveying direction), and a measuring and cutting machine in front of it (a cutter 34 is shown). The rounded uneven sheet 1' is cut to a desired length by a cutter 34, and is housed in a lower container 27 as a wire harness protection tube 1. In the same manner as in FIG. 2 , the wire harness protection tube 1 is conveyed to the wire harness assembly step, and the assembly worker 29 attaches the wire harness protection tube 1 to the wire harness 31 on the wiring table 30 .

Extruder 2 in Fig. 7(a), forming process of sheet 6 by roll processing 5, slitting process 32, sheet winding process 33, and packaging not shown (Fig. 1(b)) The processes are installed in the component factory, and the sheet embossing process 8, the sheet winding process 24, and the measurement and cutting process 34 of FIG. 7(b) are installed in the wire harness assembly plant. Alternatively, all the steps of the above-mentioned Fig. 7(a) to Fig. 7(b) are installed in the wire harness assembly factory.

FIG. 8 shows an embodiment in which the process of FIGS. 1 to 2 is applied to the manufacture of two types of frequently used wire harness protection tubes A and B for general use and a dedicated wire harness protection tube C used infrequently.

First, the thermoplastic resin material 35 that is the raw material is transported to the parts factory 36, and in the parts factory 36, corresponding to the three types of wire harness protection tubes A to C, the extruder 2 and the roll 5 in FIG. and use embossing machine 8 to carry out common embossing process to sheet material 6, in the process of Fig. 1 (b), the common concavo-convex sheet material roll 19 (the packaging process is shown with reference numeral 20 )Package. The lengths and diameters of the harness protection tubes A to C are different, and the size and shape of the resin material 35 and the embossments 15 and 16 ( FIG. 4 ) are the same (common).

The common concave-convex sheet 14 is transported to the wire harness assembly factory 37, and in the measurement and cutting process 23 of the concave-convex sheet 14 in FIG. Corresponding lengths, in the sheet rolling process 24 of FIG. 1(c), for each type of wire harness protection tubes A to C, the concave-convex sheet 14 is processed into a cylindrical shape with the wire harness protection tube A The diameter of ~C corresponds to the diameter (inner diameter and outer diameter).

The completed wire harness protection tubes AC are arranged in the parts yards 39 to 41 of the adjacent wire harness assembly process 38 according to their types, and are appropriately supplied to the wire harness assembly process 38 . The measurement cutting 23 and the rounding process 24 of the uneven|corrugated sheet|seat 14 can be performed timely according to the kind of the wire harness 31 assembled in the wire harness assembling process 38 . For an example of the wire harness assembly process 38 , refer to a conventional wire harness assembly line 58 in FIG. 9 .

According to the form example of FIG. 8 , since the extruder for continuously molding the cylindrical resin tube corresponding to the various wire harness protection tubes A to C with different sizes (diameters) described in the above-mentioned Patent Document 1 is unnecessary; The cylindrical resin tube is molded into many divided molding dies in the shape of serpentine, so the manufacturing devices 21 and 28 of the wire harness protection tubes A to C are compacted, saving the device arrangement space in the parts factory 36, and reducing the wiring harness. The cost of the protection tubes A to C and the manufacturing device 21 thereof.

In addition, since there is no need to use extrusion and vacuum (or pressure) molding process 52 in the component factory 36 to produce the general-purpose and special-purpose wire harness protection tubes A to C described in the conventional example of FIG. The equipment cost and component cost caused by the wire harness protection tube C, and the wire harness protection tubes A to C do not need to be individually packaged in the component factory 36, thereby reducing the packaging cost (distribution cost) caused by the dedicated wire harness protection tube C.

In addition, in the wire harness assembly factory 37, since the measurement and cutting 23 of the uneven sheet 14 and the sheet rolling process 24 can be performed timely according to the progress of the wire harness assembly process 38, to obtain (supply) desired wire harness protection tubes A- C, therefore, the management of the parts inventory 57 in the wire harness assembly factory 55 described in the conventional example of FIG. 9 is unnecessary, and the production cost of the wire harnesses A to C is reduced.

In addition, in each embodiment of FIG. 1 and FIG. 7 , the molten resin material 4 is stretched between the rollers 5 to form the sheet 6 , but for example, the molten resin material 4 can also be filled into a molding metal (not shown). The sheet 6 is formed in the mold.

The present invention is also effective for a manufacturing device of a wire harness exterior protector and the wire harness exterior protector itself, in addition to the manufacturing method of the wire harness exterior protector.

Industrial Utilization Possibility

The manufacturing method of the wire harness exterior protector of the present invention can be used to efficiently manufacture the wire harness exterior protector at low cost, furthermore, the increase in manufacturing cost due to the use of general-purpose and dedicated wire harness exterior protectors is suppressed, and the component manufacturing factory The manufacturing process of the inner wire harness outer protection parts is simplified and the space is saved.

Claims (3)

1. a manufacture method for the exterior guard member of wire harness, is characterized in that, comprises following operation:

The operation of sheet material is formed from the resin material of melting;

After this sheet material of formation, waste heat is utilized to implement concavo-convex processing to form the operation of concavo-convex sheet material to this sheet material; And

This concavo-convex sheet material volume circle processing is formed the operation of the exterior guard member of wire harness of tubular.

2. the manufacture method of the exterior guard member of wire harness as claimed in claim 1, is characterized in that,

The described concavo-convex sheet material of the common use of the exterior guard member of wire harness for each kind, changes volume diameter of a circle, forms the exterior guard member of diverse wire harness in the volume circle manufacturing procedure of this concavo-convex sheet material.

3. the manufacture method of the exterior guard member of wire harness as claimed in claim 1 or 2, is characterized in that,

In parts factory or wire harness maquila, form described sheet material and described concavo-convex sheet material, in this wire harness maquila, carry out the measurement cut-out of described concavo-convex sheet material and the formation of the exterior guard member of described wire harness.