JPS6219367Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a strip guide used when winding a strip around a mandrel of a winding machine.

When winding a strip around a mandrel of a winding machine, conventionally, as shown in FIG. The wrapper rolls b, c,
d is brought close to and away from the mandrel a, and the tip of the strip 1 is rolled onto wrapper rolls b,
It is held down by aprons c and d and guided by aprons e, g and i to be wound around mandrel a.

By the way, in order to improve the quality of the wound coil, it is important to wind the strip quickly and tightly around the mandrel. To this end, the guide portion of the apron i on the exit side of the final wrapper roll d in a winding machine as shown in FIG.
When the tip of the strip is wound once, it is necessary to ensure that the tip of the strip follows the outer periphery of the mandrel as quickly as possible and without causing any loosening of the strip. In particular, the distance m between the tip of the guide part of the apron i and the mandrel a is made as narrow as possible in consideration of the threading performance of the first roll, and after the tip of the strip passes through the wrapper roll d, It is desirable to align the surface of the mandrel with the surface of the mandrel.

However, conventionally, the wrapper roll d and the guide portion of the apron i are fixed to an integrated arm j and can be moved backward around the fulcrum of the arm j. If the distance m between the guide end of the apron i and the mandrel a is made as small as possible (the chain line shape of the apron i in Fig. 1), the winding of the strip end is finished and the coil becomes thick. When it comes, Ratspur roll d and mandrel a
Since m is smaller than the distance p between the coil surface and the tip of the guide portion, there is a risk that the coil surface and the tip of the guide portion may come into contact and damage the strip.

Therefore, it was necessary to leave the above-mentioned distance m wide in advance (the solid line shape of the apron i in FIG. 1). In this way, since the distance (m) is determined based on the structural factors of the machine, rather than the optimal distance (m) that takes into account the threadability of the strip, the amount of loosening in the first turn of the strip will inevitably increase, resulting in scratches on the inner surface of the coil. The winding quality deteriorated.

In order to compensate for these drawbacks, the distance m required for forming one turn of the strip should be set to the minimum necessary for threading the strip. It is necessary that the tip of the guide portion of the apron separates from the mandrel a earlier than the retreat of the wrapper roll d, which is retreated toward the mandrel a.

The strip guide for the winding machine of the present invention was developed in response to the above-mentioned needs, and is the last wrapper roll through which the strip tip passes last among the plural wrapper rolls for strip winding arranged around the outer periphery of the mandrel. A wrapper roll arm supporting the wrapper roll arm is attached to the machine body with a pin so as to be rotatable about an axis parallel to the axis of the mandrel, and a guide portion is attached to the wrapper roll arm to guide the strip on the exit side of the final wrapper roll. An apron arm having an apron arm is pivoted by a pin so as to be freely rotatable about an axis parallel to the axis of the mandrel, and an apron arm on the side opposite to the guide part of the apron arm with the pin pivoting part as a reference. One end of the link is pivoted at an appropriate location with another pin, and the other end of the link is rotated by the fuselage so that the guide portion of the apron arm moves independently of the rotation arc of the wrapper roll arm. The present invention is characterized in that an arm opening/closing cylinder which is freely attached and rotates the wrapper roll arm and the apron arm is connected to the wrapper roll arm.

Embodiments of the present invention will be described below with reference to the drawings.

2 and 3 show an example of the present invention, and the drawings show the support state of the final wrapper roll 2 and apron arm 3 among the plurality of wrapper rolls arranged on the outer periphery of the mandrel 1. .

The final wrapper roll 2 in the final position when winding the strip 4 around the mandrel 1 is rotatably attached to a frame 5, the frame 5 is fixed to the tip side of the wrapper roll arm 6, and the base of the wrapper roll arm 6 is fixed. The end is pivotally connected to the body of the winding machine by a pin 7 extending parallel to the axis of the mandrel 1, and an arm opening/closing cylinder 8 is connected to the wrapper roll arm 6, so that the opening/closing cylinder 8 is operated. The final wrapper roll 2 can be moved in the radial direction of the mandrel 1. The wrapper roll arm 6 includes an apron arm 3 having a guide surface 9 on its upper surface for guiding the strip 4 sent to the mandrel 1 and a guide portion 10 for guiding the tip of the strip on the exit side of the final wrapper roll 2. , an apron arm that is pivotally connected by a pin 11 extending parallel to the axis of the mandrel 1, and located on the opposite side of the guide portion 10 with respect to the pivot point between the apron arm 3 and the wrapper roll arm 6; At the proximal end, there is a mandrel 1
One end of a link 12 extending outwardly is pivotally connected by a pin 13, and the other end of the link 12 is pivotally connected to the body of the winding machine by an eccentric shaft 14. The eccentric shaft 14 is integrally equipped with an eccentric portion, and by holding the eccentric portion rotatably by a bearing and fixing the eccentric portion at an appropriate rotational position, the guide portion 10
The distance 15 between the tip and the mandrel 1 can be adjusted. In addition, 16 is the first wrapper roll,
17 indicates a second wrapper roll.

As mentioned above, since the apron arm 3 is supported at two places by the wrapper roll arm 6 and the link 12, when the final wrapper roll 2 retreats, the apron arm 3 is supported by the pivot point (pin 7) of the wrapper roll arm 6 as the center. Arc locus and pivot point of link 12 (eccentric shaft 1
4), the apron arm 3 retreats from the mandrel 1 while reaching the pin 1.
1 in the counterclockwise direction in the figure.

The method of winding a strip using a winding machine using the present invention is as follows. When replacing or adjusting the position of the mandrel, wrapper roll, apron, etc., insert the thread 15 between the tip of the guide part of the apron arm 3 (the intersection of the guide surface 9 and the guide part 10) and the mandrel into the first roll of the strip. The eccentric shaft 14 is adjusted to be as narrow as possible without interfering with the board. At the winding preparation stage, the position of each wrapper roll is adjusted and the tip of the strip 4 is guided to the mandrel 1 along the guide surface 9 of the apron arm 3.
Now, the tip of the strip is aligned with the guide surface 9 at the first
When the strip is bitten by the wrapper rolls 16, the leading end of the strip is wound around the mandrel 1 while being regulated by an apron (not shown) between the wrapper rolls. When the tip of the strip reaches the guide portion 10 of the apron arm 3, the tip of the strip is pressed down by the guide portion 10 and forced to lie along the surface of the mandrel 1. Therefore, the leading end of the strip is fed to the first wrapper roll 16 with no slack between the mandrel 1 and the strip 4. The strip 4 is then wound around the mandrel 1, and each wrapper roll is moved backward by this thickening of the winding. At this time, when the final wrapper roll 2 retreats, the apron arm 3 rotates counterclockwise in the figure around the pin 11 while retreating together with the final wrapper roll 2. As a result, the tip of the guide portion 10 of the apron arm 3 is retreated earlier than the final wrapper roll 2. In other words, make a quick escape. Therefore, the coil that becomes thicker will not interfere with the tip of the guide portion 10. Also, as above, link 12
Since it is provided at a position away from the mandrel 1, it does not interfere with the arrangement of equipment such as the wrapper roll.

In the embodiment described above, the eccentric shaft 14 was used as a device for adjusting the distance 15 between the tip of the guide portion 10 and the mandrel 1. It goes without saying that it may be supported so as to be freely displaceable in the directions, and that various other changes may be made without departing from the gist of the present invention.

As described above, according to the present invention, the strip guide section 10 on the exit side of the final wrapper roll 2 can be brought as close to the mandrel 1 as possible, so that the tip of the strip 4 can be wound smoothly and reliably, and the coil can be rolled up smoothly and reliably. When the coil winding becomes thick, the strip guide section 10 on the exit side of the final wrapper roll 2 can be separated from the mandrel 1 earlier than the final wrapper roll 2 (quick release). There is no fear of scratches on the surface of the mandrel, which improves the yield.
15 can be appropriately adjusted independently of the distance between the wrapper roll 2 and the mandrel 1, so that the distance 15 between the guide portion 10 and the mandrel 1 can always be maintained at an optimal value. Since this can be done by the operation of one arm opening/closing cylinder 8 connected to the arm opening/closing cylinder 8, there is no need for a dedicated cylinder for adjusting the guide part, which has excellent effects such as being mechanically and economically advantageous. can be played.

[Brief explanation of the drawing]

FIG. 1 is a schematic view showing an example of a conventional winding machine, FIG. 2 is a side view showing an embodiment of the present invention, and FIG. 3 is a perspective view showing an embodiment of the present invention. 1... Mandrel, 2... Final lapper roll, 3... Apron arm, 4... Strip,
6...Ratsupar roll arm, 7...pin, 8...
...Arm opening/closing cylinder, 10...Guide part, 1
1...Pin, 12...Link, 13...Pin, 1
5...pause.

Claims (1)

[Scope of utility model registration request] A final wrapper roll 2 through which the tip of the strip 4 last passes among a plurality of wrapper rolls for wrapping the strip 4 arranged around the outer periphery of the mandrel 1.
A wrapper roll arm 6 supporting the mandrel 1 is attached to the body with a pin 7 so as to be rotatable around an axis parallel to the axis of the mandrel 1, and a strip is attached to the wrapper roll arm 6 on the exit side of the final wrapper roll 2. A pin 11 is provided so that the apron arm 3 equipped with a guide portion 10 for guiding the mandrel 4 can be freely rotated about an axis parallel to the axis of the mandrel 1.
One end of the link 12 is pivotally connected with a pin 13 to an appropriate position on the opposite side of the apron arm 3 from the guide part 10 with reference to the pin 11 pivot part, and the apron arm 3 is The other end of the link 12 is rotatably attached to the fuselage so that the guide portion 10 of the wrapper roll arm 6 moves independently of the rotational arc of the wrapper roll arm 6, and the guide portion 10 of the wrapper roll arm 6
A strip guide for a winding machine, characterized in that an arm opening/closing cylinder 8 for rotating the apron arm 3 is connected to the wrapper roll arm 6.