TW201739538A - Coil spring winding apparatus and method of winding a coil spring - Google Patents

Abstract

A coil spring winding apparatus (1) comprises a stator and a rotor (10) which is supported on the stator so as to be rotatable about a rotation axis (13). The rotation axis (13) extends along a spring axis of a coil spring wound by the coil spring winding apparatus. At least one winding tool (21, 22) is supported on the rotor (10) so as to rotate about the rotation axis (13) of the rotor (10) upon rotation of the rotor (10). The at least one winding tool (21, 22) is configured to bend a wire (8) to form the coil spring upon rotation of the rotor (10). The at least one winding tool (21, 22) is adjustable relative to the rotor (10).

Description

Coil spring winding device and method for winding coil spring

Embodiments of the invention relate to apparatus and methods for winding a coil spring. Embodiments of the invention are particularly directed to apparatus and methods for winding a coil spring in which a rotor supporting one or more winding tools is mounted for rotation about a rotational axis of the spring.

Mattresses, sofas or other bedding or seating furniture can be provided with built-in spring units. The built-in spring unit can be formed by a spring. The machine for forming the built-in spring unit may be provided with a coil spring winding device operable to wind the coil spring. Typically, a plurality of springs having a height that matches the height of the built-in spring unit are joined to each other to form a built-in spring unit. In other cases, the endless coil spring may be further processed, such as by bending, to create a built-in spring unit from the endless coil spring.

The coil spring winding device can have various configurations. To illustrate, some coil spring winding devices can have a rotating mandrel with the coil spring wrapped around the outer surface of the mandrel. This and many other types of coil spring winding devices are output coil springs that are wound while being wound It rotates around its spring axis. This prevents such a coil spring winding device from being used in association with certain types of machines for forming a built-in spring unit, for example, the machine is configured to receive a translational advancement to form the inner spring unit. Coil spring.

A coil spring winding device that provides a rotor that rotates about an axis of rotation and has a mounted winding tool can be operated in such a manner that it outputs a helical spring that advances along its spring axis in a translational manner. However, the type of spring that can be produced by such a coil spring winding device may be more limited.

There is a continuing need in the art for a coil spring winding apparatus and a method of winding a coil spring for solving at least some of the above-described needs. There is a continuing need in the art for a coil spring winding apparatus and method of winding a coil spring that can be operated in such a manner that when the wound coil spring is output by the apparatus, the coiled coil spring is wound The rotation of the spring axis can be reduced or eliminated while allowing the springs of different shapes to be produced.

In accordance with an embodiment, one or more winding tools are supported on a rotor rotatable about an axis of rotation, the one or more winding tools being supported on the rotor for rotation about the rotor The axis of rotation is rotated while adapting the adjustment of the one or more winding tools relative to the rotor. This configuration allows the rotor to rotate about the spring axis of the spring being formed such that the spring advances from the rotor in translation. The adjustment of the one or more winding tools relative to the rotor allows for variations in the shape of the spring to be implemented, For example, by creating a spring having a conical shape, a cylindrical shape, or an hourglass shape.

A coil spring winding apparatus according to an embodiment includes a stator and a rotor. The rotor is supported on the stator so as to be rotatable about an axis of rotation. The axis of rotation may extend along a spring axis of the coil spring wound by the coil spring winding device. At least one winding tool is supported on the rotor for rotation about the axis of rotation of the rotor as the rotor rotates. The at least one winding tool is configured to bend the wire to form the coil spring as the rotor rotates. The at least one winding tool is adjustable relative to the rotor.

The coil spring winding apparatus has such a configuration that allows the rotor to rotate about the spring axis of the spring being formed such that the spring advances from the rotor in a translational manner. The adjustment of the one or several winding tools relative to the rotor allows for variations in the shape of the spring to be implemented.

The coil spring winding device can be constructed to output an endless coil spring.

The coil spring winding device can be constructed to output the coiled coil spring in such a manner that the coiled coil spring does not rotate about the spring axis while still being coupled to the rotor .

The coil spring winding apparatus can be constructed to output the coiled coil spring in such a manner that the coiled coil spring is transposed along the rotor while still being coupled to the rotor The axis of rotation is advanced.

The pitch and/or diameter of the coil of the coil spring is relative to the The rotor is adjustable to adjust the at least one winding tool. By adjusting the at least one winding tool relative to the rotor, a helical spring having a different change in pitch and/or diameter along the spring axis can be created.

A wire guide constructed to guide the wire can be mounted on the rotor for rotation about the axis of rotation as the rotor rotates. The guide member defines a recess configured to guide the wire such that abutment of the wire on the at least one winding tool causes the wire to bend.

The at least one winding tool can include a first winding tool configured to bend the wire to set a diameter of the coil of the coil spring. The first winding tool may bend the bending tool of the wire in a radial direction of the coil spring. The first winding tool can be constructed to bend the wire in a plane extending transverse to the axis of rotation of the rotor.

The first winding tool can be supported on the rotor so as to be displaceable relative to the rotor in a direction transverse to the axis of rotation. The first winding tool can be supported on the rotor so as to be pivotable relative to the rotor about a pivot axis extending parallel to the axis of rotation.

The at least one winding tool may additionally or alternatively comprise a second winding tool constructed to bend the wire to set the diameter of the coil of the coil spring. The position of the second winding tool relative to the wire guide may affect both the diameter and the pitch of the turns of the coil spring. The second winding tool may bend the deflection tool of the wire in the axial direction of the coil spring. The second winding tool can be constructed The wire is bent in a direction along the axis of rotation of the rotor.

The second winding tool can be supported on the rotor so as to be displaceable in a direction parallel to the axis of rotation of the rotor.

The wire may extend from the wire guide to the first winding tool and then to the second winding tool. The configuration of the first winding tool and the second winding tool relative to the wire guide can define the diameter and pitch of the turns of the coil spring formed by the coil spring winding device.

The coil spring winding apparatus can include a first adjustment mechanism configured to adjust a position or orientation of the first winding tool of the at least one winding tool relative to the rotor. This allows the first winding tool to be automatically adjusted relative to the rotor depending on the desired shape of the coil spring.

The first adjustment mechanism can include a first motor mounted on the stator. This simplifies the balance of the rotor.

The first adjustment mechanism can include a first slider. The first motor is configured to effect displacement of the first slider in a direction parallel to the axis of rotation of the rotor to adjust the first winding tool relative to the rotor.

The first adjustment mechanism can include a motion conversion mechanism configured to translate the displacement of the first slider parallel to the axis of rotation into a motion of the first winding tool transverse to the axis of rotation.

The motion conversion mechanism can include a wedge member supported on the rotor so as to be displaceable relative to the rotor in a translational manner parallel to the axis of rotation.

The first slider can include an annular abutment surface abutting the end of the wedge member such that the wedge member that rotates about the axis of rotation with the rotor is displaced in a direction parallel to the axis of rotation.

The motion conversion mechanism can include a beveled surface that abuts the wedge member. The beveled surface can be disposed on a member that is pivotally mounted on the rotor and that includes or otherwise supports the first winding tool.

The coil spring winding apparatus can include a second adjustment mechanism configured to adjust at least one of a position or orientation of a second winding tool of the at least one winding tool relative to the rotor. This allows the second winding tool to be automatically adjusted relative to the rotor depending on the desired shape of the coil spring.

The second adjustment mechanism can include a hollow member that is attached to the rotor for rotation about the axis of rotation as the rotor rotates. The hollow member may be a hollow tube. The second winding tool can be mounted to the hollow member.

The hollow member can be positioned such that the coiled coil spring extends through the hollow member. The hollow member can be positioned such that the coiled coil spring protrudes from the hollow member.

The second adjustment mechanism can include a second motor and a second slider. The second motor can be configured to displace the second slider in a direction parallel to the axis of rotation.

The second motor can be mounted on the stator.

The second slider can support the hollow member adjacently to allow the hollow member to rotate together with the rotor while the hollow member is displaced parallel to the axis of rotation by displacement of the second slider. The second slider can include a roller that engages the surface of the hollow member.

The first motor and/or the second motor may each be a stepper motor.

The first adjustment mechanism can be configured to adjust the first winding tool relative to the rotor in a direction transverse to the axis of rotation.

The second adjustment mechanism can be configured to adjust the second winding tool relative to the rotor in a direction parallel to the axis of rotation.

The coil spring winding apparatus can include a control device configured to control adjustment of the at least one winding tool relative to the rotor.

The control device can be coupled to the first adjustment mechanism and the second adjustment mechanism. The control device can be configured to actuate the first adjustment mechanism and/or the second adjustment mechanism only when at least one of the diameter or pitch of the coil of the coil spring is to be changed.

The control device can be configured to control the adjustment of the at least one winding tool relative to the rotor to effect a change in pitch and/or diameter along the spring axis. This allows complex spring shapes to be implemented in an automated process (eg, spring shapes of different sections of endless coil springs).

The control device can be constructed to control the feeding of the wire in accordance with the variation in pitch and/or diameter in a time dependent manner. The control device can be configured to set the rotation of each of the rotors to be fed to the first and second winding tools in accordance with the variation in pitch and/or diameter in a time dependent manner. The distance.

The control device can be configured to calculate the distance that the metal wire is fed to the first and second winding tools for each rotation of the rotor such that it is being rolled up in the rotation of the rotor Wrap the gold in the circle The lengths of the genus lines are equal, and the length depends on the pitch and diameter of the rim.

The control device can be configured to calculate the feed of the wire according to the variation in pitch and/or diameter such that the spring wound by the coil spring winding device is in a translational manner Displacement.

The coil spring winding apparatus may include a wire feed device supported on the rotor to rotate about the axis of rotation as the rotor rotates. The wire can be fed to the rotating first and second winding tools by the rotating wire feed device.

The wire feeding device may include a feed pulley and a plurality of compression rollers configured to advance the wire to abut the feed pulley. This allows reliable control of the wire feed.

The coil spring winding apparatus may include a wire feed device drive mechanism including a wire feed motor mounted to the stator and a transmission mechanism coupled between the wire feed motor and the feed pulley.

The wire feed device drive mechanism may include a first gear driven by the wire feed motor and rotatably mounted on the stator. The sun gear can be coupled to the first gear in a manner that prevents twisting. The sun gear can be coupled to a slewing gear that rotates around the sun gear. The slewing gear can be coupled to the feed pulley in a manner that prevents twisting.

According to an embodiment, a machine for producing a built-in spring unit is provided. The machine includes a coil spring winding device and a built-in spring unit assembly device constructed to receive an endless coil spring from the coil spring winding device and from one of the endless coil springs, in accordance with an embodiment A built-in spring unit is produced.

According to an embodiment, a method of winding a coil spring from a wire using a coil spring winding device is provided. The coil spring winding device includes a rotor. At least one winding tool is supported on the rotor for rotation about the axis of rotation as the rotor rotates. The method includes feeding the wire to the at least one winding tool while the rotor is rotating, wherein the at least one winding tool bends the wire to form the coil spring. The method includes adjusting the at least one winding tool relative to the rotor to control a pitch and/or diameter of the coil spring.

The method can be performed using the coil spring winding apparatus in accordance with an embodiment.

A coil spring winding apparatus according to an embodiment includes a stator and a rotor. The rotor is supported on the stator so as to be rotatable about an axis of rotation. The axis of rotation may extend along a spring axis of the coil spring wound by the coil spring winding device. The coil spring winding apparatus may include a wire feed device supported on the rotor to rotate about the axis of rotation as the rotor rotates.

The wire feeding device may include a feed pulley and a compression mechanism configured to advance the wire to abut the feed pulley. This allows reliable control of the wire feed.

The coil spring winding apparatus may include a wire feed device drive mechanism including a wire feed motor mounted to the stator and a transmission mechanism coupled between the wire feed motor and the feed pulley.

A coil spring winding apparatus and method according to an embodiment can be used to produce an endless coil spring, but is not limited thereto. Spiral bomb according to an embodiment The spring winding apparatus and method are operable to output a spring that does not rotate about its spring axis even when the spring is still coupled to the rotor, which may facilitate further processing of the coil spring into the interior Spring unit. The coil spring winding apparatus and method according to the embodiment allow winding of springs having different spring shapes without replacing parts of the coil spring winding apparatus.

1‧‧‧Helical spring winding equipment

2‧‧‧stator

3‧‧‧Base

4‧‧‧Upper structure

5‧‧‧Support

8‧‧‧Metal wire

End of 9‧‧‧

10‧‧‧Rotor

11‧‧‧ outer circumference

12‧‧‧Central opening

13‧‧‧Rotation axis

14‧‧‧Wire wire guide

15‧‧‧ channel

16‧‧‧ deflection roller

17‧‧‧External rodents

18‧‧‧Drive belt

19‧‧‧Rotor drive motor

20‧‧‧Control device

21‧‧‧First winding tool

22‧‧‧Second winding tool

23‧‧‧ Direction

24‧‧‧ Direction

25‧‧‧First mount structure

26‧‧‧Second installation structure

30‧‧‧First adjustment agency

31‧‧‧First slider

33‧‧‧Wedge members

35‧‧‧ Track

36‧‧‧Wedge surface

37‧‧‧Beveled surface

38‧‧‧ components

39‧‧‧First motor

40‧‧‧Second adjustment body

41‧‧‧Second slider

42‧‧‧ hollow components

43‧‧‧ Track

44‧‧‧ Mounting

45‧‧‧Roller

49‧‧‧second motor

51‧‧‧ Straight line

52‧‧‧ Further circle

53‧‧‧diameter

54‧‧‧匝圈

55‧‧‧diameter

56‧‧‧ Further circle

57‧‧‧ pitch

58‧‧‧匝圈

59‧‧‧ pitch

60‧‧‧feeding device

61‧‧‧Feed pulley

62‧‧‧Compression mechanism

65‧‧‧ pulley rotation axis

69‧‧‧Metal wire feed motor

70‧‧‧Feeding device drive mechanism

71‧‧‧ Gears

72‧‧‧Drive belt

73‧‧‧Intermediate gear

74‧‧‧Sun Gear

75‧‧‧Drive belt

76‧‧‧Slewing gear

77‧‧‧ shaft

80‧‧‧Metal wire supply agency

81‧‧‧ distance

82‧‧‧Guide members

83‧‧‧Support

91‧‧‧Support board

110‧‧‧Method

111‧‧‧Steps

112‧‧‧Steps

120‧‧‧Method

121‧‧‧Steps

122‧‧‧Steps

123‧‧‧Steps

124‧‧‧Steps

The embodiments of the present invention will be described in detail with reference to the drawings, wherein the same reference numerals represent the same elements.

1 is a schematic front view showing a coil spring winding device in accordance with an embodiment.

Figure 2 is an enlarged front elevational view showing a portion of the coil spring winding apparatus of Figure 1.

Figure 3 is a side elevational view of a coil spring winding apparatus in accordance with an embodiment.

Figure 4 is a side elevational view of a coil spring winding apparatus in accordance with an embodiment.

Figure 5 is a side elevational view of the coil spring winding apparatus of Figure 1 during operation.

Figure 6 is a side elevational view of the coil spring winding apparatus of Figure 1 during operation.

Figure 7 is a side elevational view of the coil spring winding apparatus of Figure 1 during operation.

Figure 8 is a side elevational view of the coil spring winding apparatus of Figure 1 during operation.

Figure 9 is a side elevational view of the coil spring winding apparatus of Figure 1 during operation.

Figure 10 is a schematic front elevational view showing a coil spring winding apparatus in accordance with an embodiment.

Figure 11 is a perspective view showing a portion of a coil spring winding apparatus in accordance with an embodiment.

Figure 12 is a schematic side view showing a coil spring winding device in accordance with an embodiment.

Figure 13 is a perspective view showing a coil spring winding apparatus in accordance with an embodiment.

Figure 14 is a perspective detail view showing the coil spring winding device of Figure 13;

Figure 15 is a perspective detail view showing the coil spring winding device of Figure 13;

Figure 16 is a side elevational view of the coil spring winding apparatus of Figure 13;

Figure 17 is a perspective detail view showing the rotor of the coil spring winding apparatus in accordance with an embodiment.

Figure 18 is a perspective view showing a rotor drive mechanism of a coil spring winding device in accordance with an embodiment.

Figure 19 is a perspective view showing an adjustment mechanism constructed to adjust a winding tool supported on a rotor of a coil spring winding apparatus in accordance with an embodiment.

Figure 20 is a perspective view showing an adjustment mechanism constructed to adjust a winding tool supported on a rotor of a coil spring winding apparatus in accordance with an embodiment.

Figure 21 is a front elevational view showing the assembly of an adjustment mechanism constructed to adjust a winding tool supported on a rotor of a coil spring winding apparatus in accordance with an embodiment.

Figure 22 is a cross-sectional view taken along line XXII-XXII of Figure 21.

Figure 23 is a perspective view showing a feeding device driving mechanism of a coil spring winding device in accordance with an embodiment.

Figure 24 is a flow diagram of a method in accordance with an embodiment.

Figure 25 is a flow diagram of a method in accordance with an embodiment.

Embodiments of the present invention will be described with reference to the drawings, in which like reference numerals represent like elements.

Although the embodiment of the present invention will be described in the context of a specific application of the coil spring winding apparatus, it should be understood that this embodiment is not limited thereto. For purposes of illustration, only certain embodiments will be described in the context of a coil spring winding apparatus operable to output an endless coil spring, but the configuration of the coil spring winding apparatus in accordance with an embodiment is not limited Here, and the coil spring winding device can alternatively or additionally be used to manufacture a coil spring having a limited height. For purposes of illustration, only some embodiments will be provided with a coil spring that is operable to output a coil spring. The background content is described, even when the coil spring is still coupled to the rotor of the coil spring winding device without rotating about its spring axis, the construction of the coil spring winding device according to the embodiment The system is not limited to this.

FIG. 1 illustrates a coil spring winding apparatus 1 in accordance with an embodiment. Figure 2 is an enlarged front elevational view of the coil spring winding apparatus 1 of Figure 1 taken in a viewing direction along the axis of rotation of the rotor. Figure 3 is an enlarged side elevational view of the helical coil winding apparatus 1 of Figure 1 in a viewing direction transverse to the axis of rotation of the rotor.

The coil spring winding device 1 includes a stator 2 and a rotor 10 rotatably supported by the stator 2. As will be explained in more detail, the rotor 10 is rotatable about the axis of rotation 13. The axis of rotation 13 coincides with or parallel to the spring axis of the coil spring wound by the coil spring winding device 1.

In operation, the rotor 10 is rotatable about the coil spring it produces, causing the coil spring to advance from the rotor 10 along the axis of rotation of the rotor in a translational manner. The rotor 10 can include an outer circumference 11 that can be circular and supported on the support 5 of the stator 2. The support 5 can include suitable bearings for rotatably supporting the rotor 10. The rotor may include a central opening 12 positioned along its axis of rotation 13. This central opening may allow the wire 8 to be supplied to one or several winding tools 21, 22 supported on the rotor 10.

The wire 8 can be supplied to the rotor 10 along a direction along the axis of rotation 13 of the rotor 10. The wire 8 can be supported on the rotor 10 The feed device is pulled towards the rotor 10 as will be explained in more detail.

At least one winding tool 21, 22 can be supported on the rotor 10. At least one winding tool 21, 22 can be supported on the rotor 10 to rotate with the rotor 10 about the axis of rotation 13 as the rotor 10 rotates. One or more winding tools 21, 22 may be supported on the rotor 10 to be adjustable relative to the rotor 10, for example, in a translational and/or pivotal manner.

One or several winding tools 21, 22 may have different configurations. To illustrate, the winding tools 21, 22 may include a first winding tool 21 that may be used as a bending tool that bends the wire 8 exiting the wire guide 14 mounted on the rotor 10. The wire guide 14 can define a passage 15 for the wire 8.

The winding tools 21, 22 can include a second winding tool 22 that can be used as a deflection tool that deflects the wire 8 from the plane defined by the wire guide 14 and the first winding tool 21. The second winding tool 22 can be constructed to bend the wire 8 in a direction corresponding to the axial direction of the coil spring by deflecting the wire 8 away from the rotor 10, thereby fixing the coil spring The pitch of the circle. This position of the second winding tool 22 relative to the wire guide 14 can also affect the diameter of the turns of the coil spring. The second winding tool 22 can be constructed to perform a bending operation that deflects the wire 8 in a direction along the axis of rotation 13, thereby forming the pitch of the coil spring. The second winding tool 22 is offset from the first winding tool 21 in a direction parallel to the axis of rotation 13 of the rotor 10.

Metal wire guide 14, first winding tool 21 and second winding tool This relative position of 22 defines the geometry of the coil of the coil spring wound by the coil spring winding device 1, in particular the diameter and pitch. The coil spring winding device 1, the wire guide 14, the first winding tool 21, and the second winding tool 22 are adjacently engaged with the wire 8 so as to be parallel to the plane of the rotor 10 and along the rotor 10. The operation of the axis of rotation 13 to bend can thereby define the diameter and pitch of the turns of the coil spring.

As will be explained in more detail below, the coil spring winding device 1 is constructed such that the coil spring wound by the coil spring winding device 1 is pushed out in a translational manner along the axis of rotation 13 of the rotor. The coil spring winding device 1 is operable to provide a coil spring that does not rotate about its spring axis even when the coil spring is still wound and still coupled to the rotor 10.

The coil spring winding device 1 is constructed such that the diameter and/or pitch of the wound coil springs can be varied, for example, between the turns of the coil springs or from one coil spring to the other. The coil spring winding device 1 can be constructed to control the position of the first winding tool 21 relative to the rotor 10 such that the first diameter of the first coil of the coil spring is different from the second coil of the same coil spring Two diameters. The coil spring winding device 1 can be constructed to control the position of the second winding tool 22 relative to the rotor 10 such that the first pitch of the first coil of the coil spring is different from the second loop of the same coil spring Second pitch. This position of the second winding tool 22 relative to the rotor 10 and in particular with respect to the position of the wire guide 14 can also affect the diameter of the turns. Thereby, the straight line formed by the coil spring can be formed The various shapes of springs defined by the variations in diameter and/or pitch do not require the operation of the coil spring winding apparatus 1 to be suspended to replace the components on the rotor 10.

The coil spring winding device 1 may include a first adjustment mechanism configured to adjust the position of the first winding tool 21 relative to the rotor 10. The first adjustment mechanism can be configured to pivot the first winding tool 21 relative to the rotor 10 and/or to displace the first winding relative to the rotor 10 as the rotor 10 rotates about its axis of rotation Tool 21. Thereby, a change in diameter between the turns can be achieved without stopping the rotor 10.

The first winding tool 21 is displaceable in a direction transverse to the axis of rotation 13 of the rotor 10. The first winding tool 21 is displaceable in a plane orthogonal to the axis of rotation 13 of the rotor 10. Displacement 23 in a direction transverse to the axis of rotation 13 causes the first winding tool to cause a change in the diameter of the turns of the coiled coil spring.

The first winding tool 21 can be mounted to the rotor 10 via a first mount structure 25 that allows the first winding tool 21 to be displaced transversely to the axis of rotation 13 relative to the rotor 10 while forcing the first A winding tool 21 rotates about the axis of rotation 13 as the rotor 10 rotates.

The first adjustment mechanism can be configured to maintain the first winding tool 21 in its position relative to the rotor 10 when the first adjustment mechanism is not actuated. To illustrate, the first adjustment mechanism can include a first slider that is displaceable along the axis of rotation 13 of the rotor 10 and that is configured to displace the wedge member in a direction parallel to the axis of rotation 13. The wedge member can be supported on the rotor 10 such that it is forced to rotate with the rotor The axis 13 rotates. The engagement of the wedge member with the mating beveled surface translates the displacement of the wedge member along the axis of rotation into a displacement of the first winding tool 21 in a direction 23 transverse to the axis of rotation 13 of the rotor 10.

The first adjustment mechanism can include a first motor 39. The first motor 39 can be mounted on the stator 2. The first motor 39 can be mounted on the base 3 or the superstructure 4 of the stator 2. This position of the first motor 39 facilitates establishing the desired power connections and connections to the control device 20 while mitigating the difficulties associated with positioning the motor on the rotor 10.

The control device 20 can control the adjustment of the first winding tool 21 based on the data defining the shape of the coil spring to reposition the first winding tool 21 relative to the rotor 10 as the rotor 10 rotates.

Control device 20 can be further configured to control rotor drive motor 19 that is operable to rotationally drive rotor 10. The control device 20 can be configured to control the first motor 39 and the rotor drive motor 19 in a coordinated manner to adjust the relative orientation of the first winding tool 21 in a time dependent manner as a function of the rotational speed of the rotor 10 At this position of the rotor 10.

The control device 20 can be further configured to control a second adjustment mechanism that is configured to adjust the second winding tool 22 relative to the rotor 10.

The second adjustment mechanism can be configured to displace the second winding tool 22 relative to the rotor 10 as the rotor 10 rotates about its axis of rotation. This makes it possible to achieve a change in the pitch between the turns and optionally also in the diameter without the need to stop the rotor 10.

The second winding tool 22 is displaceable in a direction parallel to the axis of rotation 13 of the rotor 10. The displacement of the second winding tool in the direction of the axis of rotation 13 causes a change in the pitch of the winding coil spring and optionally in diameter.

The second winding tool 22 can be mounted to the rotor 10 via a second mounting structure 26 that allows the second winding tool 22 to be displaced parallel to the axis of rotation 13 relative to the rotor 10 while forcing the second volume The winding tool 22 rotates about the axis of rotation 13 as the rotor 10 rotates.

The second adjustment mechanism can be configured to maintain the second winding tool 22 in its position relative to the rotor 10 when the second adjustment mechanism is not actuated. To illustrate, the second adjustment mechanism can include a second slider that is displaceable along the axis of rotation 13 of the rotor 10 and configured to displace the second volume in a direction 24 parallel to the axis of rotation 13 Wrap around tool 22. The second winding tool 22 can be supported on the rotor 10 such that it is forced to rotate with the rotor about the axis of rotation 13 while allowing the second winding tool 22 to be displaced along the axis of rotation 13.

The second adjustment mechanism can include the second motor. The second motor can be mounted on the stator 2. The second motor can be mounted on the base 3 or the superstructure 4 of the stator 2. This position of the second motor facilitates establishing the desired power connections and connections to the control device 20 while mitigating the difficulties associated with positioning the motor on the rotor 10.

The control device 20 can control the adjustment of the second winding tool 22 based on the data defining the shape of the coil spring to reposition the second winding tool 22 relative to the rotor 10 as the rotor 10 rotates. Control device 20 can Constructed to control the second motor and rotor drive motor 19 in a coordinated manner to adjust the second winding tool 22 relative to the rotor 10 in a time dependent manner as a function of the rotational speed of the rotor 10 The location.

In order to change both the diameter and the pitch of the coil of the coil spring along the spring axis, the control device 20 can be configured to control the first adjustment mechanism and the second adjustment mechanism in a coordinated manner to set The position of the first winding tool 21 and the second winding tool 22 relative to the wire guide 14 depends on the material defining the shape of the coil spring to be wound.

Other configurations can be used in other embodiments. For the sake of illustration, it is not necessary for both the first winding tool 21 and the second winding tool 22 to be displaceably supported on the rotor 10. The coil spring winding apparatus according to an embodiment may include only one winding tool supported on the rotor 10 to be displaced relative to the rotor 10. To illustrate, in order to achieve a change in diameter of the coil of the coil spring, the coil spring winding apparatus according to an embodiment may include a first winding tool 21 that is displaceably supported on the rotor 10, and the diameter of the turns of the coil spring is defined by bending the wire 8 in a plane extending transverse to the axis of rotation 13 of the rotor 10.

Figure 4 is a side elevational view of a coil spring winding apparatus in accordance with another embodiment. The first winding tool 21 can be supported on the rotor 10 so as not to be displaced relative to the rotor 10. The second winding tool 22 is displaceably supported on the rotor 10. The displacement 24 of the second winding tool 22 during rotation of the rotor 10 achieves a variation in pitch and optionally also affects the diameter of the turns of the coil spring.

In still another embodiment, one of the first winding tool 21 and the second winding tool 22 may be displaceably supported on the rotor 10 so as to be simultaneously along the axis of rotation 13 and transverse to the axis of rotation 13 Displacement. Thereby a change in diameter and pitch can be achieved using a displaceable winding tool in combination with one or more wire guide elements that are stationary relative to the rotor 10.

The operation of the coil spring winding device 1 will be described in more detail with reference to FIGS. 5 to 9.

5 to 7 illustrate the operation of the coil spring winding apparatus 1 according to an embodiment when the coil spring winding device 1 winds the coil spring. The end 9 of the wire 8 wound into the coil spring is advanced along a line 51 extending parallel to the axis of rotation 13 even when the coil spring is still coupled to the rotor 10 and still being wound.

Figure 5 shows a side view of the coil spring winding device 1 during operation. The first winding tool 21 and the second winding tool 22 rotate together with the rotor 10 about the rotation axis 13. The positions of the first and second winding tools 21, 22 relative to the wire guide 14 set the diameter and pitch of the turns of the coil spring. The end 9 of the wire 8 wound into the coil spring is positioned on the straight line 51.

Fig. 6 is a side view showing the coil spring winding device 1 after the rotor 10 is rotated by 180° with respect to the state shown in Fig. 5. The rotor 10 rotates about an axis of rotation 13 which extends along the spring axis of the coiled coil spring. This 180° rotation causes the coil spring to be wound a half turn. When the rotor 10 is relative to that shown in Figure 5 When the state of the display is rotated, the coil spring wound by the coil spring winding device 1 does not rotate even when the coil spring is still wound. The end 9 of the wire 8 wound into the coil spring is advanced along a line 51 extending parallel to the axis of rotation 13 in translation. It should be understood that the straight line 51 is stationary in a world reference coordinate system and does not rotate with the rotor 10.

Figure 7 shows the side of the coil spring winding device 1 after the rotor 10 has been rotated by 360° with respect to the state shown in Figure 5 and rotated by 180° with respect to the state shown in Figure 5 view. The rotor 10 rotates about an axis of rotation 13 that extends along the spring axis of the winding coil spring. This 360° rotation causes the coil spring to be wound around a loop as compared to the state shown in FIG. When the rotor 10 is rotated relative to the state shown in Fig. 6, the coil spring wound by the coil spring winding device 1 does not rotate even when the coil spring is still wound. The end 9 of the wire 8 wound into the coil spring continues to advance along a line 51 extending parallel to the axis of rotation 13 in translation.

Figure 8 is a side view showing the coil spring winding device 1 when the first winding tool 21 is displaced in a direction 23 transverse to the rotational axis 13 of the rotor 10 when the coil spring is wound. Thereby, the diameter of the coil of the coil spring can be varied. The coil 54 of the coil spring wound while the rotor 10 is rotating may have a diameter 55. The further coil 52 of the coil spring wound while the rotor 10 is further rotated may have a further diameter 53 different from the diameter 55.

Can produce a variety of spring shapes, such as cylindrical springs, hourglass Spring, conical spring or frustoconical spring.

When the coil spring winding device 1 is operated to generate an endless coil spring, which is then further processed into a built-in spring unit, the control device 20 can cycle while the first winding tool 21 and the rotor 10 are rotated about the rotation axis 13. This position of the first winding tool 21 relative to the rotor 10 is adjusted in a manner. Thereby, the desired mode of different diameters can be repeated along the endless coil spring.

FIG. 9 is a side view showing the coil spring winding device 1 when the second winding tool 22 is displaced in the direction 24 of the rotation axis 13 of the rotor 10 when the coil spring is wound. Thereby, the variation of the turns of the coil spring in the pitch can be achieved. The coil 58 of the coil spring wound while the rotor 10 is rotating may have a pitch 59. The further turns 56 of the coil spring wound as the rotor 10 is further rotated may have a further pitch 57 different from the pitch 59. The diameter of the loop can also be varied by displacement of the second winding tool 22 relative to the wire guide 14.

The control device 20 can control the position of the second winding tool 22 relative to the rotor 10 while the second winding tool 22 and the rotor 10 rotate about the axis of rotation 13 to thereby obtain the loop along the spring axis The desired change in pitch.

When the coil spring winding device 1 is operated to produce an endless coil spring, which is then further processed into a built-in spring unit, the control device 20 can cycle while the second winding tool 22 and the rotor 10 are rotated about the rotation axis 13. This position of the second winding tool 22 relative to the rotor 10 is adjusted in a manner. Thereby repeating the different pitches along the endless coil spring To mode.

The variation in diameter and the variation in pitch can be performed by displacing the first winding tool 21 and the second winding tool 22 while the rotor 10 is rotating.

In the coil spring winding apparatus 1 according to any of the embodiments, the wire may be drawn onto the rotor 10 to the rotor 10 and/or fed along the first and second winding tools 21, 22 Feeding device. The feeding device can be mounted on the rotor for rotation about the axis of rotation 13 as the rotor 10 rotates. The feed pulley of the feeding device can be rotatably mounted on the rotor 10. The axis of rotation of the feed pulley can be parallel to the axis of rotation 13 of the rotor 10 and can be offset from the axis of rotation 13 of the rotor 10 in a direction transverse to the axis of rotation 13 of the rotor 10.

A wire feed motor that at least rotatably drives the feed device drive mechanism of the feed pulley 61 can be mounted on the stator 2. The feed device drive mechanism may include: a slewing gear drive having an input coupled to the wire feed motor; and a slewing gear mounted about the axis of rotation 13 of the rotor 10 to be at the angular velocity of the rotor 10 Define the angular velocity to rotate. The rotation of the slewing gear about its own axis of rotation is controlled by the output speed of the wire feed motor.

Next, the configuration of the feeding device and the feeding device driving mechanism of the coil spring device according to the embodiment will be described.

Figure 10 is a front elevational view of a coil spring winding apparatus in accordance with an embodiment. The feeding device 60 is supported on the rotor 10. Feed device 60 can include a feed pulley 61. The feed pulley 61 has a built-up structure for abutting against metal The outer surface of line 8. The feed pulley 61 can advance the wire 8 which is advanced against the feed pulley 61 by means of a pressure fit, in particular in a friction fit manner.

The feed pulley 61 can extend in a plane transverse to the axis of rotation 13 of the rotor 10. The feed pulley 61 is operable to guide the wire 8 along an arc extending in a plane transverse to the axis of rotation 13 towards the wire guide 14. The feed pulley 61 can be constructed to receive the wire 8 from the central opening 12, which wire is guided through the rotor 10 via the central opening 12.

The deflection roller 16 can be rotatably supported on the rotor 10. The deflection roller 16 is operable to deflect the wire 8 from a direction generally along the axis of rotation 13 to a direction transverse to the axis of rotation 13.

Figure 11 is a perspective view showing the rotor 10 on which the feeding device 60 is supported. Feed device 60 can include a feed pulley 61. The feed pulley 61 is rotatable relative to the rotor 10 about the pulley axis of rotation 65. The pulley rotation axis 65 rotates about the rotation axis 13 of the rotor 10 in the operation of the coil spring winding device 1. Further, the feed pulley 61 is rotationally driven around the pulley rotation axis 65 by the feed device drive mechanism. The configuration of the feed device drive mechanism that can be used in the embodiment will be described in more detail below. The configuration of the feeding device drive mechanism that can be used in the embodiment will be described in more detail below.

The feeding device 60 can be constructed to form the advancing wire 8 against the feed pulley 61. Feeding device 60 can include a compression mechanism 62 that is configured to urge the wire against a feed pulley 61. Feed slip The wheel 61 can be rotationally driven by the feed device drive mechanism. Embodiments of the feed device drive mechanism will be described in more detail below. Control device 20 can control the operation of the feed device drive mechanism. The coil spring winding device 1 can be constructed such that the feed pulley 61 is driven to advance the wire 8 up to the distance of rotation of each rotor 10, the distance being corresponding to the coil of the coil spring being The length of the winding. The control device 10 can calculate the metal wire that the wire 8 must be advanced according to the diameter and pitch of the turns of the coil spring wound by the coil spring winding device 1 during the respective rotations of the rotor 10. The amount. Alternatively, the coil spring winding device 1 may be constructed such that the feed pulley 61 is driven to advance the wire 8 at a constant speed, wherein the angular velocity of the rotor 10 is based on the metal required for each of the coil spring coils The length of the line is adjusted.

According to a further embodiment, the configuration of the feeding device mounted on the rotor 10 as exemplarily explained with reference to Figures 10 and 11 may also be in which the first and/or second winding tools 21, 22 are opposite It is used on a coil spring winding device in which the rotor 10 is not adjustable.

Figure 12 is a schematic side view of a coil spring winding apparatus 1 in accordance with an embodiment. The coil spring winding device 1 may have any of the configurations explained with reference to FIGS. 1 through 11 above.

The coil spring winding device 1 may include a rotor drive motor 19 to drive the rotor 10. A rotor drive motor 19 can be mounted on the stator 2.

The coil spring winding device 1 may include a wire feed motor 69 to drive the feed pulley 61. A wire feed motor 69 can be mounted on the stator 2. A wire feed motor 69 can drive the input of the slewing gear drive, The slewing gear is coupled to the feed pulley 61 in a manner that prevents twisting.

The coil spring winding apparatus 1 may include a first motor 39 that is controllable to adjust the position of the first winding tool 21 relative to the rotor 10. The first motor 39 can be a stepper motor. As will be explained in more detail, the first motor 39 can be coupled to the first slider to displace the first slider in a direction parallel to the axis of rotation 13 of the rotor 10. The axial displacement of the first slider can be converted into the motion of the first winding tool 21, which is guided transverse to the axis of rotation 13 by a motion conversion mechanism. The motion conversion mechanism can include a mating beveled surface.

The coil spring winding device 1 can include a second motor 49 that can be controlled to adjust the position of the second winding tool 22 relative to the rotor 10. The second motor 49 can be a stepper motor. As will be explained in more detail, the second motor 49 can be coupled to the second slider to displace the second slider in a direction parallel to the axis of rotation 13 of the rotor 10. A hollow member can be coupled to the second slider so as to be displaceable in a direction parallel to the axis of rotation 13. The hollow member can be coupled to the rotor 10 in a manner that prevents twisting. The second winding tool 22 may protrude toward the inside of the hollow member. The coil spring winding device 1 can be constructed such that the wrap spring extends through the interior of the hollow member.

The coil spring winding device 1 may include a wire supply mechanism 80. The wire supply mechanism 80 is operable to direct the wire 8 to the rotor 10 in a direction that extends along the axis of rotation 13 of the rotor 10.

The wire supply mechanism 80 can include a guide member 82 (which can be a roller) with the wire 8 surrounding the guide member before it is supplied to the rotor 10 82 was guided.

Rotation of the rotor 10 causes the wire 8 to become distorted along the distance 81 between the guide member 82 and the rotor 10. This internal distortion of the wire 8 is advantageous because it allows for a larger pitch angle in the wound spring. This internal twist of the wire 8 causes the internal pitch of the coil spring wound by the coil spring winding device 1.

In order to control the twist of the wire 8 which affects the pitch angle of the coil spring, the coil spring winding device can be constructed such that the wire 8 is adjustable along the twisting distance 81. The guiding member 82 can be displaceably mounted on the support 83.

The various drive mechanisms of the coil spring winding device 1 can have a variety of different configurations. The structure of the rotor drive mechanism, the feed device drive mechanism, the first adjustment mechanism for adjusting the first winding tool 21, and the second adjustment mechanism for adjusting the second winding tool 22 will be described with reference to FIGS. 13 to 23. It should be understood that alternative configurations may be implemented in other embodiments. For purposes of illustration, only certain of the drive mechanisms can be constructed as described with reference to Figures 13-23. One or several of the drive mechanisms may be omitted. To illustrate, if only one of the first winding tool 21 and the second winding tool 22 is adjustable relative to the rotor 10, then only the first adjustment mechanism needs to be provided or only the second adjustment mechanism needs to be provided.

Figure 13 is a perspective view showing a coil spring winding device 1 in accordance with an embodiment. Figures 14 and 15 show a partial perspective view of the rotor and the various drive mechanisms in more detail. Figure 16 is a partial side view. Figure 17 is an enlarged perspective view of the rotor 10 and the components mounted thereon. Figure 18 is a show A perspective view of the rotor drive mechanism. Figure 19 is a perspective view showing a second adjustment mechanism constructed to adjust the second winding tool 22 in a direction parallel to the axis of rotation 13 of the rotor 10. Figure 20 is a perspective view showing a first adjustment mechanism constructed to adjust the first winding tool 21 in a direction transverse to the axis of rotation 13 of the rotor 10. Figure 21 is a partial front elevational view of the components of the first adjustment mechanism. Figure 22 is a cross-sectional view along line XXII-XXII in Figure 21. Figure 23 is a perspective view showing the drive mechanism of the feeding device.

The configuration of the rotor driving mechanism of the coil spring winding device 1 according to an embodiment will be described with reference to Figs. 13 to 18 . The rotor drive mechanism is constructed to rotationally drive the rotor 10. The rotor drive mechanism includes a rotor drive motor 19. The rotor drive motor 19 can be supported on the stator 2. The rotor drive motor 19 can have a gear coupled to the output shaft of the rotor drive motor 19. The gear can engage the drive belt 18. The drive belt 18 can be provided with a gear that meshes with the gear on the output of the rotor drive motor 19 and with the outer rod 17 of the rotor 10.

The control device 20 can control the rotor drive motor 19 such that the rotor 10 rotates at a constant angular velocity. Alternatively, control device 20 may control rotor drive motor 19 such that rotor 10 rotates at an angular velocity that depends on the diameter and pitch of the turns of the coil spring that is wound. This may be desirable when the feeding device 60 feeds the wire 8 at a constant speed, for example.

The configuration of the second adjustment mechanism 40 of the coil spring winding device 1 according to an embodiment will be described with reference to Figs. 13 to 17 and Fig. 19. Second tone The entire mechanism 40 is operable to displace the second winding tool 22 in a direction 24 parallel to the axis of rotation 13 of the rotor 10. The second adjustment mechanism 40 can be configured to adjust the position of the second winding tool 22 relative to the rotor 10 as the rotor 10 rotates, thereby adjusting the pitch of the turns of the coil spring being wound. The diameter of the loop can also be affected by the position of the second winding tool 22 relative to the wire guide 14.

The second adjustment mechanism 40 includes a second motor 49. The second motor 49 can be mounted to the stator 2. The second motor 49 can have an output coupled to the second slider 41 via a rotary to linear motion conversion mechanism, which can include spindle drive, rack and pinion drive, or any other rotary to linear motion conversion mechanism.

The second adjustment mechanism 40 includes a second slider 41. The second slider 41 is mounted to be displaceable along the axis of rotation 13 of the rotor 10 in a translational manner. The second slider 41 can be coupled to the hollow member 42 in such a manner that the linear displacement of the second slider 41 displaces the hollow member 42 in a direction parallel to the axis of rotation 13. The second slider 41 and the hollow member 42 may be constructed such that the hollow member 42 rotates relative to the second slider 41. One or a plurality of rollers 45 may be provided to rotatably support the hollow member 42.

The hollow member 42 is coupled to the rotor 10 in a torsion-resistant manner while being displaced relative to the rotor 10 in a direction parallel to the axis of rotation 13 of the rotor 10. To this end, the rail 43 protruding from the hollow member 42 is slidably received in the fitting recess of the rotor 10. The rail 43 can lock the hollow member 42 to the rotor 10 in such a manner that the hollow member 42 is forced to rotate with the rotor 10 about the axis of rotation 13 as the rotor 10 rotates, while the phase The rotor 10 is displaceable in a translational manner in this direction parallel to the axis of rotation 13. The wound coil spring may be supported by the support plate 91 after leaving the hollow member 42.

The hollow member 42 can be a hollow tube. The hollow member 42 can be configured such that the central axis of the hollow member 42 is disposed along the axis of rotation 13 of the rotor 10.

The second winding tool 22 can be rigidly attached to the hollow member 42. A mount 44 can be provided that mounts the second winding tool 22 such that it is supported on the rotor 10 via rails 43, which allows the second winding tool 22 to be relative to the rotor 10 in this direction parallel to the axis of rotation 13 Displacement.

In the operation of the coil spring winding device 1, the wound coil spring is output from the rotor 10 through the inside of the hollow member 42. The hollow member 42 is rotated about the loop of the coil spring that has just been wound, while the coil spring is advanced in translation by rotating the hollow member 42.

In order to adjust the pitch of the turns of the wound coil spring, the control device 20 can control the second motor 49. Actuation of the second motor 49 can displace the second slider 41. The second slider 41 displaces the rotating hollow member 42 toward the rotor 10 in a direction toward the rotor 10 such that the second winding tool 22 is displaced toward the rotor 10 while the second winding tool 22 is wound with the rotor 10 The axis of rotation 13 is moved. The pitch of the turns of the coil spring can be reduced by this. The displacement of the second slider 41 in a direction away from the rotor 10 causes the rotating hollow member 42 to be displaced away from the rotor 10, causing the second winding tool 22 to be displaced away from the rotor 10 while the second winding tool 22 is wound with the rotor 10. The axis of rotation 13 is moved. The coil spring The pitch of the circle can be increased by this.

The configuration of the first adjustment mechanism 30 of the coil spring winding device 1 according to an embodiment will be described with reference to Figs. 13 to 17 and Figs. 20 to 22 . The first adjustment mechanism 30 is operable to displace the first winding tool 21 in a direction 23 transverse to the axis of rotation 13 of the rotor 10. The first adjustment mechanism 30 can be configured to adjust the position of the first winding tool 21 relative to the rotor 10 as the rotor 10 rotates, thereby adjusting the diameter of the coil of the coil spring being wound.

The first adjustment mechanism 30 includes a first motor 39. The first motor 39 can be mounted to the stator 2. The first motor 39 can have an output coupled to the first slider 31 via a rotary to linear motion conversion mechanism, which can include spindle drive, rack and pinion drive, or any other rotary to linear motion conversion mechanism.

The first adjustment mechanism 30 includes a first slider 31. The first slider 31 is mounted to be displaceable in a translational manner along the axis of rotation 13 of the rotor 10.

The first slider 31 is engageable with a motion conversion mechanism that is in the direction 23 of the first winding tool 21 in a direction transverse to the axis of rotation 13 of the rotor 10 in the direction of the axis of rotation 13 of the rotor 10. The displacement of the first slider 31 is switched.

The motion conversion mechanism can include a wedge member 33. The wedge member 33 can include a wedge surface 36. The wedge member 33 can be coupled to the rotor 10 in a torsion resistant manner while being displaced relative to the rotor 10 in a direction parallel to the axis of rotation 13 of the rotor 10. For this reason, the rail protruding from the wedge member 33 The track 35 can be slidably received in the mating recess of the rotor 10. The track 35 can lock the wedge member 33 to the rotor 10 in such a manner that the wedge member 33 is forced to rotate with the rotor 10 about the axis of rotation 13 as the rotor 10 rotates, while in the direction parallel to the axis of rotation 13 Displaceable relative to the rotor 10 in a translational manner.

The motion conversion mechanism can include a mating beveled surface 37 that abuts the wedge surface 36 of the wedge member 33. The beveled surface 37 can be disposed on a member 38 mounted on the rotor 10 so as to be displaceable relative to the rotor 10 in a direction transverse to the axis of rotation 13 of the rotor 10. Member 38 and wedge member 33 can be mounted such that member 38 is displaceable perpendicular to the direction in which wedge member 33 is displaceable relative to rotor 10 in that direction. For purposes of illustration, member 38 can be a pivoting member that is mounted on the rotor so as to be pivotable about a pivot axis. The pivot axis can be parallel to the axis of rotation 13 of the rotor 10.

A biasing mechanism (not shown) can bias member 38 against adjacent engagement against wedge surface 36 of wedge member 33.

The first slider 31 can engage the wedge member 33 to allow the wedge member 33 to rotate relative to the first slider 31. The first slider 31 may have an annular surface on which the roller disposed on the end of the wedge member 33 rolls off. The displacement of the first slider 31 in this direction parallel to the axis of rotation 13 of the rotor 10 causes the wedge member 33 that rotates about the axis of rotation 13 of the rotor 10 to be displaced parallel to the axis of rotation 13. The tapered surface 36 of the wedge member 33 forces the member 38, which is also co-rotating with the rotor 10, to be displaced in a direction 23 transverse to the axis of rotation 13 of the rotor 10.

The first winding tool 21 can be mounted to or can be integrally formed with the member 38.

In the operation of the coil spring winding device 1, the wound coil spring is output from the rotor 10 through the inside of the hollow member 42. The hollow member 42 is rotated about the loop of the coil spring that has just been wound, while the coil spring is advanced in translation by rotating the hollow member 42.

In order to adjust the diameter of the turns of the wound coil spring, the control device 20 can control the first motor 39. Actuation of the first motor 39 can displace the first slider 31. The first slider 31 displaces the rotating wedge member 33 toward the rotor 10 in a direction toward the rotor 10 such that the member 38 pivots with respect to the first pivoting direction of the rotor 10 with the first winding tool 21 . The first winding tool 21 is displaced relative to the rotor 10 in a direction 23 transverse to the axis of rotation 10. The diameter of the turns of the coil spring can be reduced by this. When the first slider 31 is displaced in a direction away from the rotor 10, the biasing force applied by the member 38 to the wedge member 33 displaces the wedge member 33 away from the rotor 10, causing the first winding tool 21 to be displaced away from the rotor 10, The member 38 having the first winding tool 21 is pivoted in a second pivoting direction relative to the rotor 10, the second pivoting direction being opposite the first pivoting direction. The diameter of the turns of the coil spring can be increased by this.

The configuration of the feeding device drive mechanism 70 of the coil spring winding device 1 according to an embodiment will be described with reference to FIG. The feed device drive mechanism 70 is configured to rotate the feed pulley 61 about the pulley rotation axis 65 while the pulley rotation axis 65 is about the axis of rotation of the rotor 10. 13 to rotate.

Feed device drive mechanism 70 can generally include a slewing gear drive. The slewing gear 76 (best seen in FIG. 15) rotates about the axis of rotation 13 of the rotor 10 at a speed determined by the angular velocity of the rotor 10. The slewing gear 76 can be attached to the feed pulley 61 by a shaft 77 in a manner that prevents twisting. The rotation of the slewing gear 76 causes the feed pulley 61 to rotate about its pulley rotation axis 65 at an angular velocity corresponding to the angular velocity of the slewing gear 76.

The slewing gear 76 can be rotationally driven by the drive belt 75. The drive belt 75 meshes with the sun gear 74. The sun gear 74 is mounted on the intermediate gear 73 in a manner to prevent twisting. The intermediate gear 73 may have a larger diameter than the sun gear for torque conversion. The intermediate gear 73 is rotationally driven via a drive belt 72 that is coupled to a gear 71 that is rotationally coupled to an output shaft of the wire feed motor 69.

In operation, control device 20 controls wire feed motor 69. The rotation of the gear 71 drives the intermediate gear 73 by the drive belt 72. Rotation of the intermediate gear 73 forces the sun gear 74 to rotate about an axis corresponding to the axis of rotation 13. The rotation of the sun gear 74 rotationally drives the slewing gear 76 by the drive belt 75. The rotation of the slewing gear 76 rotates the feed pulley 61 via the shaft 77.

Control device 20 can be constructed to control wire feed motor 69. The control device 20 can be constructed to control the wire feed motor 69 such that the feed pulley 61 rotates at a constant angular velocity. In a more preferred embodiment, the control device 20 can be constructed to control the wire feed The motor 69 is sent such that the angular velocity of the feed pulley is dependent on the pitch and diameter of the turns of the coil spring being wound. This allows the rotor 10 to be rotated at a constant angular velocity while the wire feed is adjusted under the control of the control device 20 such that the length of the wire fed to the winding tools 21, 22 each time corresponds exactly to each roll. The amount of wire required to surround the respective turns of the coil spring.

24 is a flow diagram of a method 110 in accordance with an embodiment. Method 110 can be performed by coil spring winding apparatus 1 in accordance with any of the embodiments described with reference to Figures 1-23. Method 110 can be performed under the control of control device 20.

At 111, the rotor drive mechanism is activated. The rotor drive motor 19 is operable to rotate the rotor 10 at a constant or time dependent angular velocity.

At 112, the (equal) position of one or more of the winding tools 21, 22 supported on the rotor 10 is adjusted relative to the rotor 10. The first winding tool 21 is displaceable in a plane transverse to the axis of rotation 13 of the rotor 10, which rotates about the axis of rotation 13 as the rotor 10 rotates, thereby adjusting the coil spring being wound The diameter of the loop. Alternatively or additionally, the second winding tool 22 can be displaced in the direction of the axis of rotation 13 of the rotor 10 to thereby adjust the pitch of the turns of the coil spring being wound. This displacement of the second winding tool 22 can also affect the diameter of the turns of the coil spring.

Adjusting the (equal) position of one or more of the winding tools 21, 22 supported on the rotor 10 may include determining that the coil spring is being wound Whether the diameter and/or pitch are to be changed on the ring; and the motor that actuates the adjustment mechanism associated with the winding tools 21, 22 that need to be repositioned relative to the rotor 10 to change the diameter and/or pitch.

Adjusting the (equal) position of one or more of the winding tools 21, 22 supported on the rotor 10 can include selectively actuating and repositioning relative to the rotor 10 to change the diameter and/or pitch ( The motor of the adjustment mechanism associated with the winding tools 21, 22 only when it is needed to change the diameter and/or pitch.

25 is a flow diagram of a method 120 in accordance with an embodiment. The method 120 can be performed by the coil spring winding apparatus 1 according to any of the embodiments described with reference to FIGS. 1 through 23. Method 120 can be performed under the control of control device 20.

At 121, information about the shape of the coil spring to be wound can be retrieved. The information may be retrieved from a storage medium or memory having instructions for defining the diameter and pitch of the coil spring along the spring axis. The coil spring winding device 1 can include an input interface configured to allow the user to define the shape of the coil spring to be wound. This information about the shape of the coil spring can be retrieved from the user interface or from data generated based on user input.

At 122, the rotor drive mechanism 19 is activated. The rotor drive mechanism 19 is operable to rotate the rotor 10 at a constant angular velocity.

At 123, the (equal) position of one or several of the winding tools 21, 22 supported on the rotor 10 is adjusted relative to the rotor 10. Step 123 can be implemented as explained above for step 112.

At 124, as the rotor 10 rotates, the feed drive mechanism 70 can be controlled according to the pitch and diameter of the turns being wound. The wire feed motor 69 can be controlled such that the angular velocity of the feed pulley 61 is dependent on the pitch and diameter of the turns of the coil spring being wound. This allows the rotor 10 to be rotated at a constant angular velocity while the wire feed is adjusted under the control of the control device 20 such that the length of the wire fed to the winding tools 21, 22 each time corresponds exactly to each roll. The amount of wire required to surround the respective turns of the coil spring.

Although the embodiments of the present invention have been described with reference to the drawings, various modifications may be implemented in other embodiments. For purposes of illustration, it is not required to mount a plurality of adjustable winding tools on the rotor. A coil spring winding apparatus according to an embodiment may be constructed to output a coil spring having a constant diameter but a variable pitch along a spring axis thereof, in which case it may only be necessary to provide along The winding tool 22 is displaced by the axis of rotation 13 . A coil spring winding apparatus according to an embodiment may be constructed to output a coil spring having a constant pitch but a variable diameter along a spring axis thereof, in which case it may only be necessary to provide a lateral direction. The winding tool 21 is displaced on the axis of rotation 13 .

Although the embodiment in which the coil spring winding device is constructed to manufacture the endless coil spring from the wire has been described, the coil spring winding device can also be constructed to output the series from the rotor 10. The loop is cut into a coil spring with a limited height.

The coil spring winding apparatus and method according to embodiments of the present invention can be used in the manufacture of mattresses, sofas, armchairs or other bedding or seats The spring unit is installed inside the furniture, but is not limited to this.

8‧‧‧Metal wire

End of 9‧‧‧

10‧‧‧Rotor

13‧‧‧Rotation axis

21‧‧‧First winding tool

22‧‧‧Second winding tool

23‧‧‧ Direction

25‧‧‧First mount structure

26‧‧‧Second installation structure

52‧‧‧ Further circle

53‧‧‧diameter

54‧‧‧匝圈

55‧‧‧diameter

Claims (13)

A coil spring winding device (1) comprising: a stator (2); a rotor (10) supported on the stator (2) for rotation about an axis of rotation (13), the axis of rotation (13) Extending the spring axis of the coil spring wound by the coil spring winding device (1); at least one winding tool (21); and a first adjustment mechanism (30) configured to be used in the rotor (10) adjusting the position or orientation of the first winding tool (21) of the at least one winding tool (21, 22) relative to the rotor (10) during rotation about its axis of rotation; wherein the at least one volume a winding tool (21, 22) supported on the rotor (10) for rotation about the axis of rotation (13) of the rotor (10) under rotation of the rotor (10), the at least one winding tool (21, 22) constructed to bend the wire (8) under the rotation of the rotor (10) to form the coil spring, the at least one winding tool (21, 22) being adjustable relative to the rotor (10) And wherein the pitch (57, 59) and/or the diameter (53, 55) of the coil of the coil spring is adjusted by adjusting the at least one winding tool (21, 22) relative to the rotor (10) It can be adjusted. A coil spring winding apparatus according to claim 1, wherein the first adjustment mechanism (30) includes a first motor (39) mounted on the stator (2). The coil spring winding device of claim 2, wherein the first adjusting mechanism (30) comprises a first slider (31), the first A motor (39) is configured to effect displacement of the first slider (31) in a direction parallel to the axis of rotation (13) of the rotor (10) to adjust the relative relative to the rotor (10) First winding tool (21). The coil spring winding device of claim 1, further comprising: a second adjustment mechanism (40) configured to adjust a second winding tool of the at least one winding tool (21, 22) (22) at least one of a position or orientation relative to the rotor (10). The coil spring winding device of claim 4, wherein the first adjusting mechanism (30) is configured to be oriented transverse to the axis of rotation (13) relative to the rotor (10) (23) Up adjusting the first winding tool (21), and wherein the second adjusting mechanism (40) is configured to be in a direction (24) parallel to the axis of rotation (13) with respect to the rotor (10) The second winding tool (22) is adjusted. The coil spring winding device of claim 1, further comprising: a control device (20) configured to control the at least one winding tool (21, 22) relative to the rotor (10) Adjustment. The coil spring winding device of claim 6, wherein the control device (20) is configured to control the adjustment of the at least one winding tool (21, 22) relative to the rotor (10) Variations in the pitch (57, 59) and/or diameter (53, 55) along the spring axis are achieved. For example, the coil spring winding device of claim 7 Wherein, the control device (20) is constructed to control the feeding of the metal wire (8) according to the variation in the pitch (57, 59) and/or the diameter (53, 55) in a time dependent manner. A coil spring winding apparatus according to claim 8 wherein the control device (20) is constructed to vary according to the pitch (57, 59) and/or the diameter (53, 55). The feed of the wire (8) is calculated such that the spring wound by the coil spring winding device (1) is displaced in a translational manner. A coil spring winding apparatus according to claim 1, further comprising: a wire feeding device (60) supported on the rotor (10) to rotate around the axis of rotation of the rotor (10) (13) to rotate. A coil spring winding device according to claim 10, wherein the wire feeding device (60) comprises a feeding pulley (61) and a compression mechanism (62), the compression mechanism (62) being constructed to advance the metal The wire (8) abuts against the feed pulley (61). A coil spring winding device according to claim 11, further comprising: a wire feeding device driving mechanism (70) including a wire feeding motor (69) mounted to the stator (2) and coupled A transmission mechanism (71-77) between the wire feeding motor (69) and the feed pulley (61). A method of winding a wire (8) into a coil spring using a coil spring winding device (1) including a rotor (10), wherein at least one winding tool (21, 22) is supported on the rotor (10) ) to the rotor (10) Rotating about the axis of rotation (13), the method comprising: feeding the wire (8) to the at least one winding tool (21, 22) while the rotor (10) is rotating, wherein the at least a winding tool (21, 22) bends the wire (8) to form the coil spring; adjusts the at least one winding tool (21, 22) relative to the rotor (10) to control the pitch of the coil spring (57, 59) and/or diameter (53, 55); and adjusting the at least one winding tool (21, 22) during rotation of the rotor (10) about its axis of rotation by a first adjustment mechanism (30) The position or orientation of the first winding tool (21) relative to the rotor (10).