JPS63208706A - Takeup inspecting instrument for cord reel unit - Google Patents

Abstract

PURPOSE:To perform multipurpose inspection quantitatively an automatically by providing a stopper which locks the rotation of a drum mechanically at an origin and an encoder which is coupled with the drum and measures the quantity of rotation of the drum. CONSTITUTION:When a cord 6 is taken up, a reversible motor 14 rotates forward with constant torque and the drum 9 also rotates forward through a powder clutch 16, thereby deciding a conforming article when the counted quantity of an encoder 19 within a certain time is equal to N0 or nonconforming article or incomplete winding when the N is smaller than N0. The reversible motor 14 is freed after the completion of taking-up operation; when the counted quantity N at the time is smaller than N<1>, a lock is made to decide a conforming article, but when the quantity is larger than N1, a nonconforming article is decided. Even when the unlock button of a cord reel unit 5 is reset by a 3rd cylinder 13 to rewound the cord 6, a decision is made by using the counted quantity N.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to a cord reel unit that takes up and unwinds a cord, with a pulling force of 9 windings completed, a lock function of 9 windings, a rewinding force of 9 windings completed, etc. The present invention relates to a cord reel unit winding inspection device that quantitatively and automatically performs multipurpose inspections.

BACKGROUND OF THE INVENTION Conventionally, winding inspection of a cord reel unit is performed by, for example, the third test.
This was done by a worker as shown in the figure.

That is, an operator pulls out the plug 3 from the cord reel unit 1 fixed to a jig, attaches it to the plug holder 4, and pulls out the cord 2 all the way to the end while pulling the cord 2 together. During this time, the operator can judge whether the pulling force of cord 2 is good or bad by feeling, detect whether the cord 2 has been pulled out to the end by the end mark of cord 2, and lock the cord 2 to prevent it from being wound up by itself after being pulled out. Check functionality. Furthermore, after removing the plug 3 from the plug holder 4, the lock release button of the cord reel unit 1 is pressed to release the lock and check whether winding has been completed to the end.

Problems to be Solved by the Invention However, in the winding inspection of the cord reel unit by an operator as described above, for example, in the inspection of the pulling force, it is stipulated that the cord can be pulled out with a certain fixed force. , depending on the operator's sense 2. Since defects are determined, quantitative testing is not possible, and the criteria for determination vary widely, resulting in a lack of accuracy.

In addition, in other inspections, confirmation by the operator is the basic method, and there is a problem in terms of reliability of inspections in a series of flow operations.

Furthermore, since it relies on the operator not only to pull out and rewind one cord drawer, but also to make a judgment on the inspection, this becomes a bottleneck process for automation, and has the disadvantage of not being able to save on manpower.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to quantitatively perform a series of tests regarding the winding and unwinding of the cord using one test device, to automate the test, and to improve the reliability of the tests.

Means for Solving the Problems The present invention provides a motor as a driving source for forward and reverse rotation, a rotatable drum for winding a cord, a powder clutch connected between the motor and the drum, and a drum. The drum is characterized by comprising a stopper that mechanically stops the rotation of the drum at the origin, and an encoder that is connected to the drum and measures the amount of rotation of the drum.

Effect With the above configuration, when the drum is stopped at the origin,
The motor rotates forward under a constant torque calculated from the specified pulling force, the drum rotates via the powder clutch, and the cord is wound. The amount of rotation of the drum at this time is counted by an encoder, and the counted amount represents the amount of cord winding. Here, when the cord is pulled out with a constant pulling force for a certain length of the cord, the time it takes to wind the cord to the end is T. , the encoder count number is N. shall be. When winding the cord, if the specified pulling force is exceeded, the powder clutch will not be able to handle it, and that amount of torque will not be transmitted to the drum side. , it is determined to be defective.Furthermore, if the winding of the cord is incomplete for other reasons, it is determined to be defective at N(N.).

Next, after the cord winding is completed, if the motor is allowed to rotate freely, if the lock is defective, the cord will be rewound by itself.
By counting this with an encoder, it is possible to determine whether it is good or bad.

Furthermore, when rewinding the cord, by pressing the lock release button on the cord reel unit and allowing the motor to rotate freely and reversely rotate, it is possible to determine whether the cord is good or bad based on the count amount of the encoder in the same way as when rewinding the cord.

Furthermore, when rewinding the cord, a stopper is inserted at the end to stop the drum at its origin.

As in Iko, by replacing the cord winding amount per rewinding amount with the encoder count amount, a series of inspections can be judged quantitatively, which makes automation possible and improves the reliability of inspections. .

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 briefly shows a schematic diagram of a winding inspection device for a cord reel unit of this embodiment, and FIG. 2 is a sectional view of the mechanism of the winding section.

In FIGS. 1 and 2, 5 is a cord reel unit fixed to a jig, and a transfer unit consisting of a first cylinder 10, a second cylinder 11, and a chuck 12, and a plug 7 is a cord reel unit 5. The plug is transferred from the drum 9i and mounted on the plug holder 8 on the drum 9. At this time, the drum 9 is regulated in the rotational direction by the stopper 20 at the origin.

14 is a reversible motor connected to a powder clutch 16 by a first coupling 16, this powder clutch 16 is coupled to a drum 9 by a second coupling 17, the drum 9 is coupled to an encoder 19 by a third coupling 18, and the powder clutch 16 is coupled to a drum 9 by a third coupling 18; 19 counts the amount of rotation of the drum 9. Further, the drum 9 is supported by a bearing 21 and is rotatable.

When winding the cord 6, the reversible motor 14 rotates forward with a constant torque, the drum 9 also rotates forward through the powder clutch 16, and if the count amount N of the encoder 19 is N:No within a certain time Good product, N (If N., it is determined that the drawing force is poor or the winding is incomplete.

Next, when the winding of the cord 6 is completely completed, the rotation of the barge pull motor 14 is made free, and if the count iN of the encoder 19 at that time is N1, it is determined that Cff7 is being applied. If it is N2H4, it is determined that the lock is defective. Since there is some play before it is pressed, N1 indicates the count amount corresponding to that amount.

Next, the reversible motor 14 rotates freely\,
The lock release button of the cord reel unit 5 is released by the third cylinder 13, and the cord 6 is rewound.

Also at this time, if the count amount N of the encoder 19 is N=N3 within a certain time, it is determined that the product is good, and if it is N<N3, it is determined that the rewinding force is poor or the rewinding is incomplete, or the lock release button is defective.

At the time of completion of rewinding, the stopper 2o stops the drum 9.
is regulated at the origin. Finally, the plug 7 is returned from the plug holder 8 to the cord reel unit 5 using the aforementioned transfer unit to complete one cycle.

As described above, in this embodiment, a series of inspections regarding the winding and unwinding of the winding 91 can be performed quantitatively by one inspection mechanism, and complete automation is possible.

Effects of the Invention According to the present invention, the series of inspections of code reel units in the past largely depended on the senses of the operator and could not be quantitatively determined. This makes it possible to perform high-quality inspections. In addition, multi-purpose inspections can be performed with a single inspection mechanism, the device is simple, and even if the length of the cord becomes long, it does not affect the size of the device because it is a retractable type. Furthermore, since it has become possible to automate testing, the testing process can be completely automated, resulting in labor savings and easy online implementation, which has great effects.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a winding inspection device for a cord reel unit according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the mechanism of the winding section, and Fig. 3 shows the situation of a conventional winding inspection by an operator. FIG. 5... Court reel unit, 6...
Code, 9...Tram, 14...Reversible motor, 16...Powder clutch, 1
9... Encoder, 2°... Stopper.

Claims (1)

[Claims] A motor that is the drive source for forward and reverse rotation, a rotatable drum for winding the cord, a powder clutch connected between the motor and the drum, and a stopper that mechanically stops the rotation of the drum at its origin. and an encoder connected to the drum and measuring the amount of rotation of the drum.