JPS6319250B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an automatic spiral spring manufacturing method and apparatus for automatically manufacturing a spiral spring having precise predetermined dimensions.

<Conventional technology> Conventionally, in order to manufacture a mainspring spring by winding and tightening a steel strip, the steel strip is sent to a winding device, and the front and rear ends of the steel strip are Each was detected and measured.

<Problems to be Solved by the Invention> In such a device, the steel strip becomes slack when detecting dimensions, making it difficult to accurately cut the steel strip according to predetermined dimensions, resulting in dimensional variations. was.

Therefore, the inventor of the present invention devised a method to eliminate dimensional variations by installing a conveyor (in this example, a pulse motor is used) in front of the winder, but due to the winding force of the winder, the conveyor A problem arose in that accurate dimensions could not be obtained because excess steel strip was pulled out of the machine, and the problem could not be solved using a conveyor alone.

The present invention was developed as a result of various researches in view of the above-mentioned problems with the mainspring spring manufacturing method and its device.

That is, an object of the present invention is to provide an excellent automatic spiral spring manufacturing method and apparatus for accurately cutting a long steel strip to a predetermined length and winding the same.

<Means for solving the problem> (a) A conveyor that conveys a long steel strip into a looper box by the length necessary to make one mainspring spring; (c) an automatic winding device that winds the steel strip stored in the looper box from the tip; (d) a steel strip of the length necessary to make one mainspring spring; (e) a length dimension detector that detects that the length required to make one mainspring spring has been wound around the shaft of the automatic winding device, and stops the automatic winding device; (e) the rear end of the steel strip; The above-mentioned problems have been solved by the above-mentioned devices.

<Function> The conveyor conveys the long steel strip by the length necessary to make one mainspring spring, stores it in the looper box, and stops.

After the conveyor stops, the automatic winding device winds the steel strip stored in the looper box from the tip.

A length dimension detector detects the slack of the steel strip stored in the looper box and indicates that the collected steel strip has been wound by the automatic winding device to the length required to make one mainspring spring. The automatic winding device is stopped at an accurate position by detecting when the winder runs out.

After the automatic winding device stops, the cutting device cuts off the rear end.

As described above, the distance between the automatic winding device and the conveying machine is increased, and the automatic winding device is operated in sequence to reduce the influence of the automatic winding device on the conveying machine.

<Example> An example of the present invention will be described below with reference to the drawings.
In Fig. 1, numeral 1 is a coil box, which stores the steel strip A wound into a coil shape.
2 is a pull-out roller that feeds the steel strip A to box 3.
are being sent to.

The steel strip A sent to the feeding box 3 is fed by a feeding pulse motor 4 by a length necessary to make one mainspring spring, and then stopped.

The stopped steel strip A is heated at the front and rear ends of the mainspring spring in the coil 5 of the high-frequency annealing device.

The parts that will become the front and rear ends of the mainspring spring that have been annealed first are sent out by the feed pulse motor 4 to a length necessary to make one mainspring spring, and are stored in the looper box 6 with slack. Annealed in natural state.

The steel strip A stored in the looper box 6 is
Next, it passes through a length adjusting device 7, is held by a fixing device 8, and is inserted into a shaping/cutting device 9.

The looper box 6 is provided to reduce the influence of the winding force of an automatic winding device 10, which will be described later, on the feed pulse motor 4.

As shown in FIG. 2, the length adjustment device 7 is composed of five rollers and a length adjustment threaded rod 7a, and the steel strip A is connected to the front upper and lower guide rollers 7b,
7c, the length adjustment roller 7d is installed to be movable up and down with a length adjustment threaded rod 7a, and the front and rear ends are just inserted into the forming and cutting device 9 and cut. It is adjusted and guided by upper and lower rear guide rollers 7e and 7f, and sent out to the fixing device 8.

When a long steel strip A is required, the length adjusting roller 7d is located at the position drawn by the solid line in the figure, and when a shorter steel strip A is required, it is located at the position drawn by the imaginary line in the figure. Then, by turning the handle 7g of the length adjusting threaded rod 7a, the steel strip A is
Adjust so that the annealed front and rear ends are cut.

In addition, this adjustment is performed on the steel strip A of the feed pulse motor 4.
This is done only when the feed amount is changed, and when the steel strip A feed amount is not changed, the handle 7g of the length adjusting threaded rod 7a is not turned.

Next, the tip of the steel strip A held by the fixture 8 and inserted into the forming/cutting device 9 is fitted into the locking groove 10a of the automatic winding device 10, and as the automatic winding device 10 rotates as specified. I get caught up in it.

As shown in FIG. 3, the automatic winding device 10 rotates a shaft 10c by a motor 10b, the number of rotations is detected by rotation detectors 10d and 10d', and rotates by a predetermined number of rotations. As shown in FIGS. 4 and 5, the rotation detector 10d on the right side starts rotating when the magnet 10f attached to the detection plate 10e comes to the location of the rotation detector 10d.

The rotation detector 10d' on the left side is configured to detect the number of rotations and read the number of rotations based on how many times the magnet 10f comes to the position of the rotation detector 10d'.

10g and 10g' are bearings.

Reference numeral 11 shown in FIG. 1 is a length dimension detector, which detects when the steel strip A has been wound up in the automatic winding device 10 to a completely tensioned state as shown by the imaginary line, and controls the control device. 12 and further the control device 12
This is transmitted to the automatic winding device 10 to stop the shaft 10c of the automatic winding device 10.

Automatic winding device 1 that feeds the feed pulse motor 4
Since the effect of 0 is instantaneous, the amount of extra steel strip A that is drawn out will be insignificant even if it occurs.

In this way, the exact length of the steel strip A (mainspring spring) can be obtained.

After being rewound a predetermined number of times by the control device 12, the rear end of the steel strip A is pressed and cut and bent by the forming and cutting device 9.

Reference numeral 14 denotes a wrapping frame automatic holding device, which holds the steel strip A, which has been rolled up and formed as described above and then cut by press working with the forming cutting device 9, into the wrapping frame 14a.
Figures 6 and 7
This will be explained in detail below with reference to FIGS. 8, 9, 10, and 11.

The structure of the main parts is shown in Fig. 6.
Arm part 14b that holds 4a and complete holding detection part 14
c, a support frame wall 14d, a slide frame 14e, a cylinder portion 14f, and a base 14g.

Reference numeral 14h denotes a rotating cylinder, which rotates the above-mentioned component 1/4 turn in the direction of rotation of the cylinder axis.

The operating state of the automatic packaging frame holding device 14 will be explained.

As shown in FIGS. 7 and 8, the packaging frames 14a are stacked one after another on cylindrical supports 15, and are placed at the tip of a guide plate 17 that is pushed from the front (right side in the figure) by a cylinder 16. The wrapping frame body 14a comes into contact with the guide plate 17 and is guided backward (to the left in the figure) to the contact plate 18.
After the tip of the wrapping frame 14a is caught in the recess 18a, the guide plate 17 is moved forward (as shown in the figure) by the cylinder 16.
to the right).

Next, when the cylinder 19 provided at the bottom of the cylindrical support 15 operates to the right in the figure and pulls the support frame 20,
The wrapping frame 14a rotates 1/4 of a turn and is suspended from the backing plate 18.

Next, the lower cylinder 21 operates upward to push the wrapping frame 14a upward and enters between the arms 14b of the automatic wrapping frame holding device 14 that has been waiting in advance.

The arm portion 14b of the automatic packaging frame holding device 14 is provided so as to be opened and closed by a cylinder 14f.
The cylinder 14f contracts to grip the wrapping frame 14a.

The packaging frame automatic holding device 14 includes a rotating cylinder 14
h, it is rotated 1/4 turn as shown in FIG. 11, and comes to a position covering the shaft 10c of the automatic winding device 10.

Roll-formed steel strip A (mainspring) is
After being tightened, it is unwound by the control device 12 a predetermined number of times, and the diameter of the steel strip A (mainspring spring) is expanded by its elastic force, so that the wrapping frame 14
It is contained within a.

Further, the automatic wrapping frame holding device 14 is rotated downward by about 60 degrees in the rotation cylinder 14h while holding the steel strip A (spring spring) in the opposite direction.

Then, by extending the cylinder 14f,
The arm portion 14b opens and releases the wrapping frame 14a.

The wrapping frame 14a falls under its own weight and is sent out.

With the above steps, automatic manufacturing of one mainspring spring is completed.

Then, the above steps are sequentially repeated.

In the above embodiment, an example was shown in which the automatic packaging frame holding device 14 was attached, but it is of course possible to replace it with other similar devices.

<Effects of the Invention> The present invention has the above-mentioned structural action, and the steel strip stored in the looper box is sent to an automatic winding device to process the steel strip necessary to make one mainspring spring. Since the automatic winder does not apply extra force to the conveyor until the length is completely wound around the shaft of the automatic winder, the steel strip will not be pulled out beyond the rotation of the conveyor.

Therefore, it becomes possible to automatically manufacture a product with an accurate and uniform steel strip serving as a mainspring spring.

This results in a mainspring spring with a fixed shape and torque, which has the effect of automating assembly into other products and eliminating the need for adjustment after assembly. After the size is detected by the size detector, the control device rotates the shaft of the automatic winding device several more times to take up the slack in the steel strip from the conveyor to the forming and cutting device. You will be able to do it.

As described above, the present invention provides an epoch-making automatic mainspring spring manufacturing method and apparatus that have great effects.

[Brief explanation of the drawing]

Figures 1 to 11 show an embodiment of the present invention. Figure 1 is a front view of the entire device, Figure 2 is a front view of the length adjustment device, and Figure 3 is an automatic winding device. A perspective view of the take-up device, FIGS. 4 and 5 are explanatory diagrams of the automatic take-up device, and FIG. 6 is a perspective view of the automatic packaging frame holding device.
Figures 7 and 8 are explanatory diagrams of the process of sending out the packaging frame, Figures 9 and 10 are explanatory diagrams of the process of pushing the packaging frame upward, and Figure 11 is an illustration of the automatic packaging frame holding device and forming. It is a front view of a cutting device. A... Steel strip, 1... Coil box, 2... Pull-out roller, 3... Feeding box, 4... Pulse motor, 5... Coil, 6... Looper box, 7... Length adjustment device, 8...fixator, 9
... Forming and cutting device, 10 ... Automatic winding device, 11
... Length dimension detector, 12 ... Control device, 14 ...
...Wrapping frame automatic holding device, 14a...Wrapping frame, 15
...Strut.

Claims (1)

[Scope of Claims] 1. A process of transporting a long steel strip by the length necessary to make one mainspring spring, and storing the steel strip of that length in a looper box by slackening it, and the looper box. The process of winding the steel strip stored in the looper box from the tip, and the process of winding the steel strip of the above length required to make one mainspring, are performed until the slack of the steel strip inside the looper box is eliminated. A method for automatically manufacturing a mainspring spring, which comprises the steps of: detecting that the winding has occurred, stopping winding, and cutting the rear end of the steel strip; 2. A conveyor that transports a long steel strip the length necessary to make one mainspring, a looper box that slackens and collects the sent steel strip, an automatic winding device that winds the steel strip from the tip, The automatic winding device detects that the steel strip has been wound by the automatic winding device to the length necessary to make one mainspring spring by detecting that the steel strip in the looper box is no longer slack. An automatic mainspring spring manufacturing device characterized by having a length dimension detector for stopping the mainspring spring, a cutting device for cutting the rear end of the mainspring spring made of steel strip, and the above-mentioned devices.