JP3296023B2 - Corrugated tube deformation removing mechanism and corrugated tube measuring and cutting device including the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated tube deformation removing mechanism for removing deformation such as torsion of a fed corrugated tube (bellows-shaped protective tube), and a corrugated tube measuring cut including the same. It concerns the device.

[0002]

2. Description of the Related Art In general, various types (several tens) of corrugated tubes having different lengths and thicknesses are used for wire harnesses for automobiles to protect the wire harness. The length of the corrugated tube is, for example, 60
mm and as long as about 700 mm. These corrugated tubes have slits extending in the axial direction, and a predetermined portion of the wire harness is introduced into the inside through the slits.

Conventionally, at a wire harness manufacturing site, various types of corrugated tubes cut to a required length have been delivered from a trader. The delivered corrugated tubes are placed on a movable serving shelf provided next to the wire harness assembly line.
A long corrugated tube having a length exceeding that of the above-mentioned serving rack was provided in each of the poly cases arranged beside the assembly line.

[0004] When the model of the wire harness is changed, the worker on the assembly line first moves the above-mentioned serving rack or each poly case to a required position beside the assembly line, that is, the setup accompanying the model change. Make a change. The above-mentioned required position is a position where the operator can carry the required corrugated tube from the moved serving rack or poly case and transport it to the wire harness assembly drawing board side with the least walking distance, That is, this is the position where the work can be performed most efficiently.

[0005] Further, every time a drawing board for assembly is sent, an operator supplies a corresponding corrugated tube to each of a plurality of transparent cases of the drawing board for assembly in advance to assemble the product. That is, a setup for updating the assembly drawing board was performed, and then each corrugated tube was assembled to a required portion of the wire harness.

[0006]

However, it takes time from instructing a contractor to deliver a corrugated tube to actually delivering the corrugated tube, and storing an appropriate amount of stock in a predetermined storage place at a manufacturing site. Had to be kept. In addition, a great deal of labor and time was required for the change of the setup due to the above model change and the setup for updating the assembly drawing board. Furthermore, it is necessary to transport and supply the corrugated tube from the above-mentioned storage place to the above-mentioned serving rack and the plastic case, which also requires time and effort.
And the storage and transportation of such corrugated tubes,
Since the cost required for the setup change accompanying the model change and the setup for updating the assembly drawing board is added to the manufacturing cost of the wire harness, there is a problem that the manufacturing cost of the wire harness increases.

At the time of the above-mentioned setup change or setup,
There is a problem that mistakes such as supply of a corrugated tube of a type that should not be supplied tend to occur, and there is a problem that an erroneous product is assembled due to the mistake. Therefore, the inventor of the present application provides a long corrugated tube wound in a roll form from a trader, cuts the corrugated tube fed out and fed into a required length, and prepares a wire harness assembly drawing board. It was thought that if it could be supplied to the required parts in real time, it would be possible to suppress the cost increase due to the above-mentioned storage, transportation and setup.

However, in this case, the following new problems are expected. That is, the corrugated tube CT unwound from the roll-shaped one is shown in FIG.
As shown in (1), a gently twisting of a relatively long pitch is caused by the curl. If the feeding is continued without removing the torsion, the torsion of the corrugated tube CT is accumulated and a very large torsion is generated. As a result, the feeding of the corrugated tube CT may be impossible. Also,
At the time of cutting the corrugated tube CT on the downstream side in the feeding direction, due to the torsion, there are problems such as an error in the cut length of the corrugated tube CT and an inclination of the cut surface.

Therefore, in order to remove the twist due to the curl of the corrugated tube as described above, it is conceivable to perform rewinding with the winding direction reversed, but this rewinding operation is very troublesome. The cost of rewinding increases the production cost of the wire harness. On the other hand, in addition to the case where the corrugated tube is twisted as described above, the corrugated tube is flattened as shown in FIG. 18B, or sandwiches the slit CT1 as shown in FIG. 18C. However, both sides may overlap, and in these cases, the cut surface and the cut length of the corrugated tube CT are adversely affected.

The present invention has been made in view of such technical background, and a first object of the present invention is to provide a corrugated tube capable of reliably removing deformation such as twisting of a fed corrugated tube. It is to provide a tube deformation removing mechanism. A second object of the present invention is to provide a corrugated tube measuring and cutting apparatus which has good measuring accuracy and can obtain a good cut surface.

Further, a third object of the present invention is to provide a corrugated tube measuring and cutting apparatus which can be incorporated in a wire harness assembly line and can reduce the manufacturing cost of the wire harness.

[0012]

In order to achieve the first object, a corrugated tube deformation removing mechanism according to claim 1 has a slit extending in the axial direction and continuously has a slit extending in the axial direction. Of the long corrugated tube being fed
A mechanism for removing deformation, an inner guide that guides the inner peripheral surface of the corrugated tube, a cylindrical outer guide that guides the outer peripheral surface of the corrugated tube, and penetrated the slit of the corrugated tube along the axial direction of the corrugated tube. blade and integrally connected to the guide in the state, and the solid
A support means for rotatably supporting said outer guide is fixed to Jodai, the corrugated tube fed
The blade inserted into the slit is
Rotate freely to untwist the tube.
It is characterized by having.

Further, in order to achieve the second object,
A corrugated tube measuring and cutting device according to a second aspect is provided with the corrugated tube deformation removing mechanism according to the first aspect and a measuring and cutting mechanism for trimming and cutting the corrugated tube to a desired length. .

Further, in order to achieve the third object, the corrugated tube measuring and cutting apparatus according to the third aspect is the corrugated tube measuring and cutting apparatus according to the second aspect, wherein the corrugated tube measuring and cutting apparatus is arranged along a wire harness assembly line. To each of a plurality of corrugated tube receivers installed along the feed direction of the drawing board for wire harness assembly to be sent,
A supply mechanism that supplies the corrugated tube after cutting, and a control unit that controls operations of the scale cutting mechanism and the supply mechanism are provided, and the control unit can receive supply of the corrugated tube from the supply mechanism. The corrugated tubes to be supplied to each corrugated tube receiving portion are measured and cut by the measuring and cutting mechanism one by one according to the feeding order of the corrugated tube receiving portions sequentially sent to the positions, and each of the corrugated tubes is cut by the measuring and cutting mechanism. It is characterized in that it is supplied to a corrugated tube receiving portion.

[0015]

According to the corrugated tube deformation removing mechanism of the first aspect, the outer guide is rotatably supported by the support means, and the outer guide is integrally provided with the blade penetrating the slit of the corrugated tube. Because of the connection, the blade can freely rotate so as to release the twist of the fed corrugated tube. Further, even when the corrugated tube is fed in a state where both side portions sandwiching the slit are overlapped with each other, the overlap can be removed by the blade. Further, the collapse of the corrugated tube can be removed by the two guides that guide the inner and outer peripheral surfaces of the corrugated tube.

According to the corrugated tube measuring and cutting apparatus according to the second aspect, the corrugated tube can be measured and cut in a state where various deformations of the corrugated tube are removed. According to the corrugated tube measuring device according to the third aspect, the corrugated tube can be supplied in real time to each corrugated tube receiving portion of the wire harness assembly drawing board to be sent. That is, it becomes possible to incorporate the corrugated tube measuring device into the wire harness assembly line.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The corrugated tube tone length cutting device including a corrugated tube deformation removal mechanism in one embodiment of the overall schematic configuration diagram 3 the present invention, shows a schematic view of a state incorporated in the assembly line of the wire harness. Referring to FIG. 3, this corrugated tube measuring and cutting device A (hereinafter simply referred to as a measuring and cutting device A)
), The corrugated tube CT unreeled from the supply reel R is trimmed to a desired length and cut.
Corrugated tubes CT respectively corresponding to the corrugated tube receiving portions 110 of the wiring harness assembling board 100 fed at a predetermined feed speed along the assembly line.
Is supplied in real time.

Referring to FIG. 3 and FIG. 4, which is a view taken in the direction of the arrow Y in FIG. 3, this measuring and cutting apparatus A includes a supply reel to which a long corrugated tube CT wound in a roll is detachably attached. R and a supply reel R as required, a feeding mechanism E including a corrugated tube entanglement removing mechanism F (hereinafter, simply referred to as an entanglement removing mechanism F) for tangling the corrugated tube CT, a guide roller GR1, and a corrugated tube deformation. A removing mechanism B (hereinafter, simply referred to as a deformation removing mechanism; hereinafter, refer to FIG. 4), a pair of upper and lower delivery rollers DR1, a pool mechanism P that allows a certain slack of the fed corrugated tube CT, and a guide roller GR.
2, GR3, deformation removing mechanism B, two pairs of upper and lower feed rollers DR2, DR3 that are driven to rotate in synchronization with the feed speed of the assembly drawing board 100 (hereinafter, refer to FIG. 3), and cut the corrugated tube CT. A measuring mechanism M for measuring the travel distance of the corrugated tube CT for defining the length, a deformation removing mechanism B, and a cutting mechanism C for cutting the corrugated tube CT.
And a supply mechanism S for dropping and supplying the cut corrugated tube CT to the corrugated tube receiving portion 110 of the assembling drawing board 100 are sequentially provided along the feeding path of the corrugated tube CT.

The feed roller DR1, the feed roller D
R2, DR3, motors DM1, DM for driving these
2, and a feed mechanism D is configured to include the guide rollers GR1 to GR4. The distance between the pair of feed rollers DR1, the distance between the pair of feed rollers DR2, and the distance between the pair of feed rollers DR3 can be adjusted. Are applicable to a plurality of different types of corrugated tubes CT. As shown in FIG. 5, the delivery roller DR1 is formed of a toothed roller in which a tooth T that can mesh with irregularities on the peripheral surface of the corrugated tube CT is formed on a concave peripheral surface DR11. Referring to FIG. 3, a scale cutting mechanism MC includes a measuring mechanism M, a feeding mechanism D, and a cutting mechanism C. This scale cutting mechanism M
In C, the feed amount is measured by the measuring mechanism M while feeding the corrugated tube CT by the feed rollers DR2 and DR3, and when the required measurement value is obtained, the feed rollers DR2 and DR3 are stopped. The corrugated tube CT is cut by the cutting mechanism C, so that the corrugated tube C having a desired length is cut.
To get T.

A control panel CB is arranged on the same pedestal as the supply stand SD supporting the supply reel R. The control panel CB includes control means (not shown) including a microcomputer for controlling the operations of the entanglement removing mechanism F, the scale cutting mechanism MC, and the supply mechanism S. In this control means, a plurality of types of patterns are stored which indicate the cutting length of the corrugated tube CT and the cutting order in accordance with the type of the wire harness. An operation box CB2 having an operation switch CB1 for setting the feeding speed of the corrugated tube CT and the above-described pattern is provided above the control panel CB.
Is provided.

[0021] Referring to assembling diagram plate 3, the above assembling diagram plate 100, along the flow direction L of the assembly line in a state in which a plurality is continuous, predetermined conveyor tact (Figure for one assembly The period of passage of the plate,
(Generally several minutes to several tens of minutes). Each worker arranged at each process position performs a predetermined process work on the conveyed assembly drawing board 100, and a wire harness is sequentially manufactured.

Referring to FIG. 6, in the assembly drawing board 100,
The upper part is inclined backward so that the worker can easily work, and various assembling jigs 120 for positioning and holding the wire harness YH are installed on the assembling drawing board 100. Referring to FIG. 7, corrugated tube receiving portions 110 each having an L-shaped cross section are provided on assembly board 100 corresponding to each of a plurality of portions where various corrugated tubes CT are used. I have. The corrugated tube receiving portions 110 are arranged substantially along the feed direction of the assembly drawing board 100. As shown in FIG. 6 and FIG. 8 which is a front view of the corrugated tube receiving portion, each of the corrugated tube receiving portions 110 is provided with a plurality of stopper pieces 130 extending upward.
10 are attached at equal intervals in the longitudinal direction.
The interval between the stopper pieces 130 is set shorter than the minimum cutting length of the corrugated tube CT.
Referring to FIG. 6, the corrugated tube receiving portion 110 includes:
The corrugated tube CT which has been dropped from a rotation receiving member S1 of the supply mechanism S described later and guided by the guide plates S7 and S8 is received.

Referring to FIG. 7, the corrugated tube receiving portion 110a is configured to independently receive 11 corresponding corrugated tubes CT. In FIG. 7, the corrugated tube receiving portion 110b receives a plurality of corrugated tubes CT independently. In FIG. 7, the corrugated tube receiving portion 1
10c receives the corresponding corrugated tube CT in cooperation with the assembly jig 120, the clip holder 140, or another corrugated tube receiving portion 110c. In FIG. 7, the leftmost corrugated tube CTa is received by a plurality of assembly jigs 120. In this case, these assembly jigs 120 constitute a corrugated tube receiving portion. become.

Referring to FIGS. 6 and 7, a plurality of transparent cases 140 are arranged along the longitudinal direction of assembly drawing board 100 at the upper edge of assembly drawing board 100. I have. These transparent cases 140 are for accommodating the corrugated tubes CT other than the corrugated tubes CT supplied by the measuring and cutting apparatus of the present embodiment, and other assembled parts.

[0025] With reference to feeding mechanism shown in FIGS. 3 and 9, the feeding mechanism E includes the supply reel R, the supply stand SD was supported by
And the entanglement removing mechanism F that rotates the supply reel R when necessary to entangle the corrugated tube CT. On the supply stand SD, a supply reel R for setup change is mounted in addition to the supply reel R.

The supply reel R has an outer flange portion R1.
By attaching and detaching only, the roll-shaped corrugated tube CT delivered from the trader can be directly attached to and detached from the winding drum R1. Referring to FIG. 10 which is a partially cutaway side view of the supply reel R and FIG. 11 which is a partially enlarged front view of the outer flange portion R1, the outer flange portion R1 is formed on the outer flange portion R1. Screw R penetrating screw insertion hole R11 consisting of an arcuate slit
3 is fixed by screwing it into a screw hole R21 provided on the end face of the winding drum R2. Referring to FIG. 11, a screw head insertion / removal hole R12 through which the head of the screw R3 can be inserted is continuously formed in the screw insertion hole R11. Therefore, if the screw R3 is slightly loosened and the outer flange portion R1 is slightly rotated clockwise in FIG. 11 so that the position of the screw head insertion / removal hole R12 matches the position of the head of the screw R3, the outer flange portion R1 can be obtained. Can be attached and detached. That is, since the rolled corrugated tube CT can be replaced without removing the screw R3, the replacement operation can be performed easily and quickly.

Referring to FIGS. 9 and 12, the entanglement removing mechanism F includes a driven shaft F rotatable integrally with the supply reel R.
1, a cylindrical drive shaft F3 connected to the outer peripheral surface of the driven shaft F1 via a known roller clutch or the like via a clutch F2, and a predetermined amount of the drive shaft F3 by expansion and contraction of a rod F41. And an entanglement detecting means F5 for detecting the occurrence of entanglement in the corrugated tube CT on the supply reel R side based on the tension of the corrugated tube CT immediately after being fed from the supply reel R. Have.

The one-way clutch F2 has a drive shaft F3.
However, only when it is rotated in the direction in which the corrugated tube CT is fed from the supply reel R, the relative rotation between the drive shaft F3 and the driven shaft F1 is restricted, and the two are integrally rotated.
Referring to FIG. 9, the entanglement detecting means F5 includes a swing lever F51 having a base end swingably supported by a supply stand SD and a rotatable roller F52 attached to the tip end, and a swing lever F51. A limit switch F53 that is turned on and off by contact and separation. When the corrugated tube CT on the supply reel R side becomes entangled and the corrugated tube CT is stretched, the swing lever F52 rotates clockwise in FIG.
53 is turned on.

The air cylinder F4 has its cylinder side swingably attached to the supply stand SD, and the tip of the rod F41 is attached to the outer peripheral surface of the drive shaft F3 via a known spherical joint F6 and bracket F8. ing. This air cylinder F4 is shown in FIG.
When the occurrence of the entanglement is detected by the entanglement detecting means F5 as shown in (2), the rod F41 is extended, and the drive shaft F3 is rotated in the direction in which the corrugated tube CT is extended.
At this time, since the relative rotation between the drive shaft F3 and the driven shaft F1 is regulated by the one-way clutch F2, FIG.
As shown in FIG.
Is forcibly rotated in the feeding direction K1. Thereafter, the air cylinder E4 shortens the rod F41, and the drive shaft F
By rotating the shaft 3 in the direction K2 opposite to the direction in which the corrugated tube CT is extended, the connected state between the driven shaft F1 and the driving shaft F3 by the one clutch F2 is released,
As shown in FIG. 13C, the supply reel R is ready for reverse rotation (rotation in the direction opposite to the feeding direction).
In this manner, after the supply reel R is forcibly rotated, the reverse rotation can be allowed, so that the generated entanglement of the corrugated tube CT can be reliably removed. Also, since the supply reel R after the forced rotation can be reversed,
There is no danger that the corrugated tube CT is pulled and deformed by the rotational inertia of the supply reel R.

Pool Mechanism Referring to FIG. 4 and FIG. 14 which is a schematic plan view of the pool mechanism, the pool mechanism P is provided with a certain amount of slack (for example, 50 mm to 35 mm) in the corrugated tube CT in the feed path.
0 mm) to keep the tension applied to the corrugated tube CT constant. In this pool mechanism P, when one of the photoelectric switches P1 is turned on, the delivery roller DR1 is driven to send out the corrugated tube CT, and the other photoelectric switch P1 is turned on.
When 2 is turned off, the driving of the delivery roller DR1 is stopped.

[0031] With reference to deform removal mechanism 4 and 15, the above modification removal mechanism B is
They are arranged at three positions: a position on the upstream side in the feed direction of the feed roller DR1, a position on the upstream side in the feed direction of the feed rollers DR2 and DR3, and a position on the upstream side in the feed direction of the cutting mechanism C. With reference to FIGS. 1 and 2, this deformation removal mechanism B
A cylindrical inner guide B1 for guiding the inner peripheral surface of the corrugated tube CT, a cylindrical outer guide B2 for guiding the outer peripheral surface of the corrugated tube CT, and a corrugated tube CT
Tube consisting of a rectangular plate along the axial direction of the corrugated tube CT
Guides B1 and B2 in a state where
B3 integrally fixed to the outer guide B and the outer guide B
2 rotatably supports the outer guide B2 via a ball B4,
An outer race member B5 fixed to the holding frame W (see FIG. 15) by a fixing base B6. A bearing including the outer guide B2 as an inner race, a ball B4 and an outer race member B5 is formed, and the inner guide B1, the blade B
3 and the outer guide B2 are integrally rotatable.

Referring to FIG. 4, the inner guide B1 of the deformation removing mechanism B arranged on the upstream side of the feed roller DR1 is
It extends to the downstream delivery roller DR1 to prevent the corrugated tube CT receiving the driving force from the delivery roller DR1 from being deformed. The inner guide B1 of the deformation removing mechanism B disposed on the upstream side of the feed rollers DR2, DR3 is connected to the downstream feed rollers DR2, D3.
The corrugated tube CT extends to the portion R3 and receives the driving force of the feed rollers DR2 and DR3 to prevent the corrugated tube CT from being deformed. Further, the inner guide B1 of the deformation removing mechanism B arranged on the upstream side of the cutting mechanism C extends from the upstream measuring mechanism M to immediately before the downstream cutting mechanism C. The corrugated tube for measurement and cutting is provided. CT crushing is prevented.

According to the deformation removing mechanism B, the blade B inserted through the slit CT1 of the corrugated tube CT is used.
3 can rotate freely so as to release the twist of the fed corrugated tube CT. Also, when the corrugated tube CT is fed in a state where both sides of the corrugated tube CT sandwiching the slit CT1 are overlapped with each other, the overlap can be removed by the blade B3. Further, the collapse of the corrugated tube CT can be removed by the two guides B1 and B2 that guide the inner and outer surfaces of the corrugated tube CT. Accordingly, the corrugated tube CT is sent to the feed rollers DR2, DR3 and the measuring mechanism M in a state where the deformation is removed by the deformation removing mechanism B on the upstream side of the feed rollers DR2, DR3, and the occurrence of feed failure occurs. Can be prevented and accurate measurement can be performed. Further, the corrugated tube CT is provided with a deformation removing mechanism B on the upstream side of the cutting mechanism C.
With the deformation removed, the sheet is sent to the cutting mechanism C, and it is possible to prevent the occurrence of a cutting failure due to the deformation.

Incidentally, rollers can be used in place of the above-mentioned ball B4. The measuring mechanism M includes a rubber roller M1 as a measuring roller slidably in contact with the peripheral surface of the corrugated tube CT, and a toothed driven roller M2 that radially sandwiches the corrugated tube CT between the rubber roller M1 and the rubber roller M1. A known rotary encoder M3 coaxially connected to the rubber roller M1.
It has. The rotation shaft of the rubber roller M1 is slidably supported up and down, and is elastically urged downward by a compression coil spring M4. Therefore, even if the corrugated tube CT is slightly deformed, the rubber roller M1 can always slide on the corrugated tube CT with a constant pressing force while moving following the undulation of the corrugated tube CT. The occurrence of slip between the rubber roller M1 and the corrugated tube CT can be prevented. In the measuring mechanism M, the rubber roller M1 for measurement is provided separately from the feed rollers DR2 and DR3.
Even if a slip occurs on the DR2 or DR3 side, the measurement accuracy, that is, the scale accuracy is not adversely affected.

Cutting Mechanism Referring to FIG. 15, the cutting mechanism C includes a table C1 fixed to the frame W, a fixed blade C2 fixed to an end face of the table C1, and a fixed blade C2. A movable blade C3 that cuts the corrugated tube CT by sandwiching the same, and an air cylinder C5 that is fixed on the base C1 via a bracket C4 and slides the movable blade C3 up and down. The cutting edge portion C31 of the movable blade C3 is formed in an R shape in a side view in order to prevent the corrugated tube CT from being crushed at the time of cutting. In the cutting mechanism C, the movable blade C3 is moved to the lower fixed blade C2 side by the extension of the rod C51 of the air cylinder C5 to cut the corrugated tube CT. Note that the cut corrugated tube CT is pushed out by the tip of the subsequent corrugated tube CT toward the rotation receiving member S1 of the supply mechanism S, which will be described later.

Supply Mechanism Referring to FIG. 16, the supply mechanism S is a long rotation receiving member that can receive the corrugated tube CT that has been cut and extruded from the cutting mechanism C and has a U-shaped cross section. S1, a motor S4 in which the rotation receiving member S1 is integrally rotatably connected via a shaft member S2 and a coupling S3, and the motor S4 is fixed to a frame W and the shaft member S3 is rotatable. It includes a supported bracket S5, and an air cylinder S6 for corrugated tube pushing disposed directly above the rotation receiving member S1. The rotation receiving member S1 has an insertion hole S11 through which the rod S61 of the air cylinder S6 enters with the open side facing downward.

According to the supply mechanism S, the rotation receiving member S
In a state where the opening side of 1 is turned upward, the corrugated tube CT is received from the cutting mechanism C side (see FIG. 17A), and then the rotation receiving member S1 is rotated 180 ° by the step motor S4 to rotate the rotation receiving member S1. 17 (see FIG. 17 (b)), the rod S61 of the air cylinder S6 for pushing is pushed into the inside of the rotation receiving member S1 through the insertion hole S11 of the rotation receiving member S1, and the corrugated tube CT is inserted. The rotation is reliably discharged from the rotation receiving member S1 (see FIG. 17C). The timing of this discharge depends on the corrugated tube C to be discharged.
This is the timing at which the corrugated tube receiving portion 110 corresponding to T reaches below the supply mechanism S, and is set in advance by the control means. The discharged corrugated tube CT falls into the corrugated tube receiving portion 110 in a state substantially parallel to the assembly drawing board 100 as shown in FIG. Further, at this time, as shown in FIG. 6, the guide plates S7 and S8 are surely guided to the corrugated tube receiving portion 110.

According to this embodiment, the corrugated tube CT can be measured and cut by the deformation removing mechanism B in a state in which the deformation such as twisting due to the curl of the corrugated tube CT has been removed. And a good cut surface can be obtained. Further, by the operation switch CB1 of the control panel CB,
A pattern for cutting the corrugated tube CT of what cutting length and in what order is set in advance, and the corrugated tube CT is measured and cut in accordance with the timing at which each corrugated tube receiving portion 110 passes below the supply mechanism S. If the feed speed of the corrugated tube CT and the operation timing of the supply mechanism S are set so as to drop the corrugated tube CT, the corrugated tube corresponding to each corrugated tube receiving portion 110 of the assembling drawing board 100 to be sent is set. The tubes CT can be measured and cut one by one, and then dropped and supplied. That is, it was possible to incorporate the scale cutting device A into a wire harness assembly line (a so-called in-line configuration). As a result, with regard to the corrugated tubes CT that can be supplied from the measuring and cutting apparatus A, there is no need to secure inventory and there is no need to transport the large number of corrugated tubes from the storage location to the assembly line. Furthermore, there is no need to change the arrangement of disposing corrugated tubes to be assembled in accordance with the type of the wire harness, or to set the assembly drawing board 100 in advance every time the assembly drawing board 100 is updated. In turn,
The cost of manufacturing wire harnesses related to assembling corrugated tubes can be significantly reduced.
Erroneous assembly can be eliminated.

The present invention is not limited to the above embodiment, and various design changes can be made without changing the gist of the present invention.

[0040]

As described above, according to the corrugated tube deformation removing mechanism according to the first aspect, the blade can freely rotate while penetrating the slit of the fed corrugated tube. The twist of the corrugated tube can be smoothly released, and the overlap of both sides of the slit of the corrugated tube can be removed. Further, the collapse of the corrugated tube can be removed by the inner and outer guides, and the deformation of the fed corrugated tube can be reliably removed in combination with the removal of the twist and the overlap described above.

Further, according to the corrugated tube measuring and cutting apparatus according to the second aspect, the corrugated tube can be measured and cut in a state in which various deformations of the corrugated tube are removed, and as a result, the measuring accuracy is improved. And a good cut surface can be obtained. According to the corrugated tube measuring device according to the third aspect, the corresponding corrugated tube can be supplied to each corrugated tube receiving portion of the wiring harness assembling board without error in real time, and the corrugated tube measuring cut. The device can now be integrated into a wire harness assembly line. Therefore, with respect to the corrugated tubes that can be supplied to the assembly line by the above-mentioned corrugated tube measuring and cutting device, it is not necessary to secure a large number of stocks, nor is it necessary to transport these from the storage location to the assembly line, Further, it is not necessary to change the setup in accordance with the change of the model of the wire harness or to update the assembly drawing board in the same model. As a result, the manufacturing cost of the wire harness relating to the installation of the corrugated tube can be significantly reduced, and the erroneous product assembly can be eliminated.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view of a corrugated tube deformation removing mechanism according to an embodiment of the present invention.

FIG. 2 is a partial sectional side view of the deformation removing mechanism.

FIG. 3 is a schematic configuration diagram of a scale cutting device that includes a deformation removing mechanism and is incorporated in a wire harness assembly line.

FIG. 4 is a view in the direction of the arrow Y in FIG. 3;

FIG. 5 is a schematic front view of a delivery roller.

FIG. 6 is a schematic side view of an assembly part plate.

FIG. 7 is a schematic front view of an assembly drawing plate.

FIG. 8 is a front view of a corrugated tube receiving portion.

FIG. 9 is a schematic side view of the feeding mechanism.

FIG. 10 is a partially exploded side view showing a mounting portion of an outer flange portion of the supply reel.

FIG. 11 is a schematic front view of a supply reel.

FIG. 12 is a partial sectional side view of the entanglement removing mechanism.

FIG. 13 is a schematic side view sequentially showing the operation of the entanglement removing mechanism.

FIG. 14 is a schematic plan view of a pool mechanism.

FIG. 15 is a schematic side view of a scale cutting mechanism.

FIG. 16 is a partially cutaway side view of the supply mechanism.

FIG. 17 is a schematic sectional view sequentially showing the operation of the supply mechanism.

FIG. 18 is a schematic perspective view of a modified corrugated tube CT.

[Explanation of symbols]

 CT Corrugated tube CT1 Slit B Deformation removing mechanism B1 Inner guide B2 Outer guide B3 Blade B5 Outer ring member (supporting means) MC Scale cutting mechanism S Supply mechanism 100 Assembly drawing board 110 Corrugated tube receiver

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B23B 21/00 F16L 9/06 F16L 11/11

Claims (3)

(57) [Claims] 1. A mechanism for removing deformation of a long corrugated tube having a slit extending in the axial direction and continuously fed in the axial direction, wherein the inner peripheral surface of the corrugated tube is guided by a guide. Inner guide, cylindrical outer guide that guides the outer peripheral surface of the corrugated tube, a blade that connects both guides integrally along the axial direction of the corrugated tube and penetrates the slit of the corrugated tube, and fixed to a fixed base a support means for rotatably supporting the outer guide while being, is inserted through the slit of the corrugated tube fed
The blade untwists the fed corrugated tube.
A corrugated tube deformation removing mechanism characterized in that the corrugated tube is rotatable freely . 2. A corrugated tube measuring and cutting device comprising: the corrugated tube deformation removing mechanism according to claim 1; and a measuring and cutting mechanism for trimming and cutting the corrugated tube to a desired length. 3. A chill gate tube measuring and cutting apparatus according to claim 2, wherein a plurality of corrugated tube receiving portions are provided along the feed direction of the wire harness assembly drawing board fed along the wire harness assembly line. Each of them has a supply mechanism for supplying the corrugated tube after cutting, and control means for controlling the operations of the scale cutting mechanism and the supply mechanism, and the control means receives supply of the corrugated tube from the supply mechanism. The corrugated tubes to be supplied to each corrugated tube receiving portion are measured and cut by the measuring and cutting mechanism one by one according to the feeding order of the corrugated tube receiving portions sequentially sent to the position where the corrugated tube receiving portion can be supplied. The corrugated tube is supplied to each corrugated tube receiving portion by a mechanism. Tone scale cutting device.