JP4504731B2 - Center pressing device and method for winding machine - Google Patents

Description

  The present invention relates to an improvement in a center pressing device and method for a winding machine for supporting a winding jig.

  A conventional center holding device for a winding machine urges a housing holding a receiving portion to be fitted with a winding jig via a bearing from a direction facing the spindle, and the winding jig is connected to the spindle and the housing. It was clamped so that it could rotate from both.

In addition, there exists a thing as described in patent document 1, for example in the center pressing device of a winding machine.
Utility Kaihei 6-232232

  However, in such a center pressing device, if there is a deviation between the axis of the winding jig and the axis of the receiving part, the winding jig will not fit into the receiving part. It is necessary to have high accuracy of parts. In this case, there has been a problem that the centering work is troublesome and the cost of the parts is increased.

  In addition, a clearance can be provided in the fitting portion between the winding jig and the accommodating portion. However, in this case, there is a problem in that a core runout occurs during rotation and the bearing is damaged.

  The present invention has been made in view of the above problems, and provides a center pressing device for a winding machine that does not require high-precision centering and prevents damage to the bearing due to runout during rotation.

According to a first aspect of the present invention, there is provided a winding machine in which an end portion of a winding jig fixed to a spindle is fitted with an accommodating portion supported by a housing via a bearing from a direction facing the spindle to sandwich the winding jig. In the center pressing device, a plurality of support bars parallel to the spindle are passed through holes formed in the housing with a predetermined gap so that the housing can be tilted and moved in a direction parallel to and perpendicular to the axis of the spindle. capable supporting, in the support support base bar and the mounting is urged by a spring, provided with a spherical body that presses the housing to the spindle direction.

According to a second invention, in the first invention, the sphere is supported by being urged in the spindle direction via the first spring at the tip of a moving bar urged in the spindle direction by the second spring.

According to a third aspect of the present invention, there is provided a winding machine in which an end portion of a winding jig fixed to a spindle is fitted with an accommodating portion supported by a housing via a bearing from a direction facing the spindle to sandwich the winding jig. In the center pressing method, a plurality of support bars parallel to the spindle are passed through a hole formed in the housing with a predetermined gap so that the housing can be tilted and moved in a direction parallel to and perpendicular to the axis of the spindle. capable supporting the sphere provided on the support base fitted with said supporting bar, urges the spring to press said housing to the spindle direction.

According to the first and third aspects of the invention, even when there is a shift of the shaft center between the winding jig and the housing portion, the shift of the shaft core can be compensated by the inclination of the housing. Therefore, runout can be prevented and damage to the bearing can be prevented. In addition, it is possible to omit a highly accurate centering operation at the time of manufacturing the center pressing device, and work efficiency is improved. Furthermore, since it is not necessary to use highly accurate parts, the cost can be reduced.

  According to the second invention, by urging the moving bar by the second spring, the displacement of the housing in the spindle axial direction due to the inclination of the housing is compensated, and the steel ball is supported at the tip of the moving bar by the first spring. Therefore, it is possible to absorb vibrations caused by vibrations of the housing during rotation and to always ensure good pressing.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a view showing a center pressing device of a winding machine according to the present invention.

  A spindle 1 supported by a winding machine body (not shown) is provided at one end of the center pressing device 50. A recess 1 a is formed at the end of the spindle 1, and the winding jig 5 is fixed to the spindle 1 by fitting one protrusion 5 a of the winding jig 5 into the recess 1 a.

  A bobbin 4 is fitted around the winding jig 5, the bobbin 4 rotates with the rotation of the spindle 1, and the wire 3 fed from the nozzle 2 is wound around the bobbin 4.

  At the other end of the center pressing device 50, a support base 6 having a cross section formed in a wheel shape is provided. The support base 6 is slid in the axial direction of the spindle 1 with the shaft core substantially coaxial with the spindle 1 via the bearing 17 by the frame 11 having the shaft core portion 6a fixed to the winding machine main body (not shown). It is supported movably. The axial movement of the spindle 1 of the support base 6 is performed by operating the actuator 20.

  At the tip of the support base 6, a housing 7 having a wheel cross section for supporting the other protrusion 5 b of the winding jig 5 is provided. The housing 7 is formed with an opening 7 a that opens toward the winding jig 5. Inside the opening 7 a, a receiving portion 14 that fits with the protrusion 5 b of the winding jig 5 is provided via a bearing 13 so as to be freely rotatable on the support base 6.

  The housing 7 is supported by two support bars 12 extending in the axial direction of the spindle 1 from the end portions 6 b and 6 c of the support base 6. The housing 7 is formed with holes 7a and 7b that are fitted into the support bar 12 with a predetermined gap. The head 7 is formed to have the holes 7a and 7b penetrate the support bar 12 and have a diameter larger than the diameter of the holes 7a and 7b. By locking with 12a, it supports while preventing the housing 7 from falling off. By supporting the housing 7 in this manner, the housing 7 can be allowed to move with respect to the support base 6 in a direction inclined and parallel to the axis within a predetermined range.

  The housing 7 is pressed in the direction of the spindle 1 by a steel ball 16 provided at the tip of the moving bar 8.

  The moving bar 8 is slidably supported coaxially with the spindle 1 through a slide bush 9 in a hollow portion 6d formed in the shaft core portion 6a of the support base 6. A second spring 10 that presses the moving bar 8 in the spindle direction and abuts the steel ball 16 at the tip against the center of the housing 7 is interposed in the hollow portion 6d.

  The steel ball 16 is composed of a spherical rigid body, and a part of the steel ball 16 is accommodated in the end portion 8a of the moving bar 8 formed in a bowl shape. The steel ball 16 is urged so as to come into contact with the housing 7 by a first spring 15 interposed in the hollow portion 8b. Since the steel ball 16 contacts the housing 7 at a point, it presses the housing 7 while allowing the housing 7 to freely tilt in any direction, and securely holds the fit between the receiving portion 14 and the winding jig 5. can do.

  If there is a misalignment between the winding jig 5 and the accommodating portion 14, a core runout occurs when the winding jig 5 rotates, and an excessive load is applied to the bearing 13 to cause damage. Therefore, by setting the center pressing device 50 to the above-described configuration, even when there is a deviation of the shaft center between the winding jig 5 and the accommodating portion 14, the housing 7 is inclined, so that the shaft center is displaced. Can be compensated. At this time, the central portion of the housing 7 moves in the direction of the support base 6, but the second spring 10 contracts to absorb this displacement. Thereby, even if the housing 7 inclines, the housing 7 can always be pressed favorably, and shakiness of the housing 7 can be suppressed.

  Further, by supporting the steel ball 16 with the first spring 15, the steel ball 16 is caused to follow the housing 7 even when slight vibration occurs in the housing 7, and the steel ball 16 is reliably brought into contact with the housing 7. Can do.

  Therefore, runout can be prevented and damage to the bearing 13 can be prevented. In addition, a highly accurate centering operation at the time of manufacturing the center pressing device 50 can be omitted, and the working efficiency is improved. Furthermore, since it is not necessary to use highly accurate parts, the cost can be reduced.

  Next, a winding method using the center pressing device 50 will be described.

  First, the bobbin 4 is fitted into the winding jig 5, and one protrusion 5 a of the winding jig 5 is fitted into the recess 1 a of the spindle 1 to fix the winding jig 5 to the spindle 1.

  Next, the actuator 20 is operated, the housing portion 14 of the housing 7 is brought closer to the winding jig 5 from the facing direction of the spindle 1, and the housing portion 14 is fitted to the protrusion 5 b of the winding jig 5.

  Then, the winding jig 5 is rotated together with the spindle 1 to wind the wire 3 around the bobbin 4. In the present embodiment, the wire 3 is wound around the bobbin 4, but the wire 3 may be wound directly around the winding jig 5.

  As described above, in the present invention, the accommodating portion 14 supported by the housing 7 via the bearing 13 is fitted into the end portion 5 b of the winding jig 5 fixed to the spindle 1 from the direction facing the spindle 1. In the center pressing device 50 of the winding machine that sandwiches the jig 5, the housing 7 is supported by passing the support bar 12 with the tip extended through holes 7 a and 7 b formed in the housing 7 with a predetermined gap. The steel ball 16 urged by the springs 10 and 15 is brought into contact with the center portion and pressed in the spindle direction, thereby maintaining the fitting between the winding jig 5 and the accommodating portion 14. Even when there is a deviation of the shaft center between the housing 14 and the housing portion 14, the housing 7 is inclined and moved parallel to the shaft core to compensate for the shaft center displacement. Kill. Therefore, runout can be prevented and damage to the bearing 13 can be prevented. In addition, a highly accurate centering operation at the time of manufacturing the center pressing device 50 can be omitted, and the working efficiency is improved. Furthermore, since it is not necessary to use highly accurate parts, the cost can be reduced.

  Although the present invention has been described in some specific language with respect to structural and methodological features, the means disclosed herein include preferred forms of practicing the invention, and the invention is illustrated and described. It should be understood that the invention is not limited to specific features. Accordingly, the present invention includes any forms or modifications within the scope of the claims as appropriately interpreted in accordance with the principle of equality.

  The present invention is applicable to a center pressing device and method for a winding machine.

It is a schematic block diagram which shows one Embodiment of the center pressing device of the winding machine by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spindle 5 Winding jig 5a, 5b Protrusion part 6 Support stand 7 Housing 8 Moving bar 8a, 8b Hole 10 Second spring 12 Support bar 13 Bearing 14 Housing part 15 First spring 16 Steel ball

Claims (3)

In a center pressing device of a winding machine that fits an end portion of a winding jig fixed to a spindle to a housing supported by a housing via a bearing from a direction facing the spindle, and sandwiches the winding jig.
A plurality of support bars parallel to the spindle are passed through a hole formed in the housing with a predetermined gap so that the housing can be tilted and supported so as to be movable in a direction parallel to and perpendicular to the axis of the spindle ,
Provided on the support base to which the support bar is attached is a sphere that is biased by a spring and presses the housing in the spindle direction.
A center pressing device for a winding machine. 2. The winding according to claim 1, wherein the spherical body is urged and supported in the spindle direction via a first spring at a tip of a moving bar urged in a spindle direction by a second spring. Center presser of the machine. In the center pressing method of the winding machine that fits the housing supported by the housing through a bearing to the end of the winding jig fixed to the spindle from the direction facing the spindle, and sandwiches the winding jig.
A plurality of support bars parallel to the spindle are passed through a hole formed in the housing with a predetermined gap so that the housing can be tilted and supported so as to be movable in a direction parallel to and perpendicular to the axis of the spindle ,
A sphere provided on a support base to which the support bar is attached is urged by a spring to press the housing in the spindle direction.
A center pressing method for a winding machine.