WO2006083058A1

WO2006083058A1 - Traverse device of bobbinless coil winding machine

Info

Publication number: WO2006083058A1
Application number: PCT/KR2005/001017
Authority: WO
Inventors: Sang-Soo Han
Original assignee: Sang-Soo Han
Priority date: 2005-02-02
Filing date: 2005-04-07
Publication date: 2006-08-10
Also published as: CN101065815B; KR100505136B1; CN101065815A

Abstract

Disclosed is a traverse device of a bobbinless coil winding machine, which intermittently reciprocates a coil guide for guiding a coil (15) so that a coil is wound in alignment around a core fixed to a driving jig on a main body. The traverse device mainly composed of a carriage, rotating strips, a driving motor, a regulating means and a detection means. The carriage is mounted by interposing the coil guide on the top surface, and mounted so as to be linearly movable by interposing a LM guide on a frame F of the main body. The rotating strips are fixed spaced each other to both opposite sides on the front surface of the carriage, and provides a feed force for linear feeding. The driving motor has a joint shaft that is rotatably mounted thereon, being held inside the rotating strips, and transfers a torque intermittently, being latched in the axial direction of the joint shaft. The regulating means is mounted by interposing a slider on the carriage so as to enable the tension regulation of the rotating strips. The detection means generates a signal according to a shift in position of the carriage. Accordingly, the traverse device of a bobbinless coil winding machine for winding a certain coil in alignment around a core fixed to a jig at a constant interval can operate rapidly and accurately and facilitate improvement in productivity since there is no backlash at all and, while making the traverse lightweight overall and reducing the manufacture cost by simplifying the structure of the traverse.

Description

TRAVERSE DEVICE OF BOBBINLESS COIL WINDING MACHINE

BACKGROUND OF THE INVENTION

Field of the Invention

[01] The present invention relates to a traverse device of a bobbinless coil winding machine, and more particularly, to a traverse device of a bobbinless coil winding machine for winding a certain coil in alignment around a core fixed to a j ig at a constant interval , which can operate rapidly and accurately and facilitate improvement in productivity since there is no backlash at all and, while making the traverse lightweight overall and reducing the manufacture cost by simplifying the structure of the traverse . Background of the Related Art

[02] Generally, it is well-known that a mobile phone has "manner mode" and "vibrating function" . The vibrating function is for letting a user alone notice a call in places where it is required to be silent . By this vibrating function, a small vibrating motor mounted within the mobile phone is operated to generate vibration . As seen from this , although the purpose of a vibrating motor has been a rather simple one of merely informing of a call so far, the ongoing trend is that the purpose of a vibrating motor is being changed into the concept of multimedia for enjoying a variety of entertainment and games with cell phones .

[03] According to this trend, a vibrating motor needs to be manufactured such that its size is small and its efficiency is high . The efficiency of the vibrating motor is generated from an induction coil , a driving source for rotating a rotor in the vibrating motor . This induction coil brings about many problems in die casting unless the coil is correct and constant in shape . Thus , it should be noted that the coil is wound up in an orderly fashion and the flatness of its surface is good. Further, alignment winding (winding in even number of turns ) and (winding in uneven number of turns ) are an essential task in order to wind the coil to a desired size and in a desired number of turns .

[04] FIG . l is a block diagram showing a traverse device adapted to a conventional coil winding machine .

[05] In a general bobbinless coil winding machine, a traverse is used to linearly reciprocate a coil guide 15 for conducting a coil so that the coil is wound in alignment around a core 12 mounted to a driving j ig 11 on a main body 10. The traverse 1 consists of a U-shaped cross sectional rail and a block 3 with LM guides on both sides and a ball screw 2 at the center . Hence, the traverse is able to carry out the function of reciprocating a coil guide 15 by rotating the ball screw 2 using a motor 4 , with the coil guide being mounted to the block 3. [06] However, this type of conventional traverse 1 is usually sold with some degree of backlash allowed . Thus, in order to make backlash smaller, an external pressure is applied to the ball screw thus resulted in a slight decrease in the backlash. In this case, however, a large force is applied in rotation to thus bring about another problem to the bobbinless coil winding machine desired to instantaneously rotate . That is , the conventional traverse 1 has a drawback that the capacity of the motor should be increased, and when used for a long time, it generates a clearance, thus making it impossible to maintain the initial accuracy .

[071 Further, the conventional traverse 1 has a drawback that the capacity of the motor should be increased since a large force is applied due to inertia when the motor is instantaneously driven, i . e . , when rotated or stopped, because the ball screw 2 is heavy.

[08] Moreover, the conventional traverse 1 has a drawback that it is very complicated in its structure, its manufacture cost is increased due to an overall increase in weight, and a very high price should be paid in order to use a product with almost no backlash, thus resulting in an increase in manufacture cost . Besides , since the traverse 1 is an accurate product, this causes inconveniences in installation, management, etc . and increases additional costs . SUMIxIARY OF THE INVENTION

[09] The present invention is directed to overcome the foregoing problems and therefore an obj ect is to provide a traverse device of a bobbinless coil winding machine for winding a certain coil in alignment around a core fixed to a j ig at a constant interval, which can operate rapidly and accurately and facilitate improvement in productivity since there is no backlash at all and, while making the traverse lightweight overall and reducing the manufacture cost by simplifying the structure of the traverse .

[10] To achieve the object, there is provided a traverse device of a bobbinless coil winding machine according to the present invention, which intermittently reciprocates a coil guide for guiding a coil 15 so that a coil is wound in alignment around a core fixed to a driving j ig on a main body, comprising : a carriage which is mounted by interposing the coil guide on the top surface, and mounted so as to be linearly movable by interposing a LM guide on a frame F of the main body; rotating strips which are fixed spaced each other to both opposite sides on the front surface of the carriage, and provides a feed force for linear feeding; a driving motor which has a joint shaft that is rotatably mounted thereon, being held inside the rotating strips, and transfers a torque intermittently, being latched in the axial direction of the j oint shaft; a regulating means which is mounted by interposing a slider on the carriage so as to enable the tension regulation of the rotating strips ; and a detection means which generates a signal according to a shift in position of the carriage .

[11] The regulating means further comprises the slider which is mounted so as to be movable on the carriages , with one ends of the rotating strips being fixed thereto, and a regulation bolt which is interposed to one side of the slider and elastically supported by a spring applying a pressure in the reverse direction with respect to the slider .

[12] The detection means further comprises proximity sensors which are disposed at a stroke distance that corresponds to an actuating dog fastened to one side of the carriage .

BRIEF DESCRIPTION OF THE DRAWINGS

[13] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment ( s ) of the invention and together with the description serve to explain the principle of the invention . In the drawings :

[14] FIG . l is a block diagram showing a traverse device adapted to a conventional coil winding machine ; [15] FIG.2 is a block diagram showing the structure of a traverse device according to the present invention;

[16] FIG .3 is a block diagram showing a mounted state of the traverse device;

[17] FIG .4 is a block diagram showing an operating state of the traverse device according to the present invention; and

[18] FIG .5 is a block diagram showing the structure of the traverse device according to one embodiment of the present invention .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [19] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings .

[20] FIG .2 is a block diagram showing the structure of a traverse device according to the present invention, in which FIG . 2a shows the traverse device when viewed from the front, FIG .2b shows the traverse device when viewed from the side, and FIG .2c shows the traverse device when viewed from the bottom. FIG .3 is a block diagram showing a mounted state of the traverse device , in which FIG .3a shows the traverse device when viewed from the front, and FIG .3b shows the traverse device when viewed from the side . FIG .5 is a block diagram showing the structure of the traverse device according to one embodiment of the present invention, in which FIG .5a shows the traverse device when viewed from the front, and FIG .5b shows the traverse device when viewed from the plane .

[21] The present invention involves a traverse device that intermittently reciprocate a coil guide 15 for guiding a coil so that the coil C is wound in alignment around a core 12 mounted to a driving j ig 11 on a main body 10. Particularly, the present invention is directed to reduce the manufacture cost by making lightweight overall in its structure and improve the structure of the traverse for simplification so that there is no backlash at all in its use . This invention is mainly composed of a carriage 20 , rotating strips 30 , a driving motor 40 , a regulating means 50 and a detection means .

[22] Here, the traverse 60 of the present invention operates in conjunction with an intermittent feeding mechanism 16 as shown in FIG . l for driving the core 12 mounted to the driving j ig 11. Briefly, when the coil C guided by the coil guide 5 is wound around the core 12 of the driving jig 11, the traverse 16 moves to the left by one pitch to sequentially wind the coil, and at the same time the driving j ig 11 moves backward by one pitch by the intermittent feeding mechanism 16, thus forming a gap equal to the thickness of the coil C .

[23] The carriage 20 according to the present invention is mounted by interposing the coil guide 15 on the top surface, and mounted so as to be linearly movable by interposing a LM guide on a frame F of the main body 10. As shown in FIG .3 , the coil guide 15 is mounted on the carriage 20 by interposing a bracket on the front surface . In FIG .2a, the coil guide 15 to be described later is omitted from the front surface of the carriage 20 in order to clearly show the mechanical construction of the present invention, but the detailed description thereof will be provided later . The carriage 20 is mounted on the frame F of the main body 10 as shown in FIG .2b, with the LM guide 25 consisting of a LM rail and a LM block interposed on the frame F . Alternatively, as shown in FIG .5a, the LM guide 25 can be mounted on the frame of a fixed

j ig

[24] By this , the carriage 20 serves to linearly reciprocate on the frame F by the LM guide 25. At this time, a slider 51 is mounted at the carriage 20 so as to be movable on the carriage 20 as shown in FIGs . 2a and 2c and FIGs . 5a and 5b . The regulating means 50 is disposed on the slider 51 for regulating tension with one ends of the rotating strips 30 fixed thereto . The construction and operation thereof will be described in detail later .

[25] Additionally, the rotating strips 30 according to the present invention are fixed spaced each other to both opposite sides on the front surface of the carriage 20 , and provides a feed force for linear feeding . The rotating strips 30 are formed using a thin metal plate material as shown in the enlarged views of FIGs .2a and 5b . They are respectively mounted by engaging bolts at both sides , with the center on the front surface of the carriage 20 as a reference . At this time, one of the two rotating strips can be regulated in tension sine it is fixed to the slider 51 to be described later, and a detailed description thereof will be provided later . The rotating strips 30 are fixed by engaging bolts on the outer circumferential surface of a j oint shaft 45 to be described later, and the rotary motion of the j oint shaft 45 plays the role of linear transformation . The rotating strips 30 transfers a feed force by performing relative motion in an axial direction by the torque of the j oint shaft 45 , so that the carriage 20 may linearly reciprocate .

[26] Further, the driving motor 40 according to the present invention has a j oint shaft 45 that is rotatably mounted thereon, being held inside the rotating strips 30, and transfers a torque intermittently, being latched in the axial direction of the j oint shaft 45. The driving motor 40 is vertically mounted on the frame F where the LM guide 25 is mounted as shown in FIG .2b, or horizontally mounted on the frame of the fixed j ig as shown in FIG .5b, with the j oint shaft 45 being connected to the driving axis of the driving motor 40 so as to be axially rotatable . At the outer circumferential surface of the j oint shaft 45 , mounted are the rotating strips 30 for providing a feed force for linear feeding . Therefore, the torque of the driving motor 40 is transferred to the j oint shaft 45 , and the torque transferred to the j oint shaft 45 is transformed into a linear force by the rotating strips 30, thereby transferring a feed force for linearly reciprocating the carriage 40. Here, the driving motor 40 achieves stepless speed change by using a sub motor capable of constant speed operation that is set to a constant torque, and is connected to a control box (not shown) on a circuit basis .

[27] Further, the regulating means 50 according to the present invention is mounted by interposing the slider 51 on the carriage so as to enable the tension regulation of the rotating strips 30. The regulating means 50 is provided with the slider 51 and a regulation bolt 53 as shown in FIGs . 2a and Ic and FIGs . 5a and 5b so as to enable tension regulation against the loosening of the rotating strips 30 caused by external environmental changes . The slider 51 is mounted so as to be movable on the carriages 20 , with one ends of the rotating strips 30 being fixed thereto, and the regulation bolt 53 is interposed to one side of the slider 51 , being elastically supported by a spring 52 , thereby applying a pressure in the reverse direction with respect to the slider 51. That is , in the case the rotating strips 30 are loosened, the regulating means 50 regulates the regulation bolt 53 , and thus the spring 52 provides an elastic force in the reverse direction with respect to the slider 51, thereby always keeping the rotating strips 30 tight . Accordingly, as tension is constantly added to one of the rotating strips 30 and thus the tension is added to the j oint shaft 45, the tension of the other rotating strip 30 is regulated too . By this, the rotating strips at both sides are not loosened but always kept tight, thereby preventing a backlash .

[28] Further, the detection means according to the present invention generates a signal according to a shift in position of the carriage 20. The detection means further has proximity sensors 23 disposed at a stroke distance that corresponds to an actuating dog 22 fastened to one side of the carriage 20. As shown in FIGs . 2a and 2c and FIG . 5a, the actuating dog 22 is fastened to one side of the carriage 20 , and the proximity sensors 23 are fastened onto the frame F of the main body 10. Especially, the actuating dog 22 is provided in plural number, and the proximity sensor 23s are arranged close to the front stroke end, middle stroke end and rear stroke end of the carriage 20.

[29] Of the proximity sensors 23, the sensor located at the left side in FIGs 2a and 5a detects a left limiting point of the carriage 20 , and the sensor located at the right side detects a reference point of the carriage 20. As shown in FIGs .2b and 5a, a constant gap is maintained between the proximity sensors 23 so that the proximity sensors 23 may detect a signal in a non- contact manner with the actuating dog 22 by the characteristics of the proximity sensors 23. Of course, each of the proximity sensors 23 is wired to an input portion of the control box (not shown) and used as signal for determining the operation timing of the driving motor 40.

[30] In other words , as the carriage 20 linearly reciprocates along the LM rail of the LM guide 25 by the relative motion of the rotating strips 30 in an axial direction using the torque of the j oint shaft 45 along with the driving axis of the driving motor 40 , the actuating dog 22 moves as well . By this , when the position of the carriage 20 is detected by the proximity sensors 23, the detection means serves to stop the carriage 20 readily when the driving motor 40 is turned off through a controller .

[31] FIG .4 is a block diagram showing an operating state of the traverse device according to the present invention, in which (a) shows an initial state, (b) shows the state of the carriage 20 being moved to the left, and ( c) shows the state of the carriage 20 being moved to the right .

[32] As for the operation of the present invention, referring to FIGs . 2 to 5 , for the convenience of understanding, each of the main components are organically operated by the control box, the bilateral reciprocation range of the traverse 60 in the bobbinless coil winding machine is only within 5mm, and the intermittent feed amount of the intermittent feed mechanism 16 operating in conjunction with the traverse 60 is also operated within only 5mm.

[33] According to the above , the operation of the bobbinless coil winding machine will be explained in brief . A tensioner 5 supplies the coil C in a wound state with a proper tension maintained, and the traverse 60 supplies the core 12 of the driving j ig 11 by the coil guide 15 guiding the coil and at the same time one end of the guided coil C is fixed by a coil gripper 6.

[34] Meanwhile, the driving j ig 11 is moved forward by the intermittent feed mechanism 16 and set, and the coil C is wound around the core 12 of the driving j ig 11. By this , the motor is rotated to provide a torque for rotating the driving j ig 11. When the coil C guided by the coil guide 60 is wound around the core 12 of the driving j ig 11, the traverse 60 moves intermittently by one pitch to the right side of FIG .3a and FIG .5a and sequentially wind the coil, and at the same time, the driving j ig 11 moves backward by one pitch by the intermittent feed mechanism 16, thus forming a gap equal to the thickness of the coil C .

[35] To carry out this operation, the traverse 60 serves to linearly and intermittently feed the coil guide 15 , and thus transfers a feed force so that the carriage 20 linearly reciprocates by means of the LM guide 25 by the relative motion of the rotating strips 30 in an axial direction using the torque of the j oint shaft 45 along with the driving axis of the driving motor 40. By this, the coil guide 15 reciprocates stably in a horizontal direction on the core 12 mounted at the driving j ig .

[36] More specifically, in the initial state as shown in FIG .4 (a ) , the driving motor 40 intermittently rotates to the left as shown in FIG .4 (b) , and simultaneously, the j oint shaft 45 intermittently rotates to the right . As the carriage 20 is intermittently fed to the left along with the rotating strips 30 , the carriage 20 is intermittently fed to the left along the LM rail of the LM guide 25, thereby intermittently feeding the coil guide 15 to the left in conjunction with the intermittent feed mechanism 16 on the core 12 mounted at the driving j ig 11.

[37] At this time, if the position of the carriage 20 is detected by the proximity sensor 23 located at the front stroke end of the carriage 20, with the actuating dog 22 having been intermittently fed to the left, the carriage 20 is stopped readily when the driving motor 40 is turned off through a controller . That is , as the traverse device 60 repeats the above operation, the coil C supplied from the coil guide 15 is wound around the core 12 , thus forming a first layer .

[38] Next , the movement direction of the traverse 60 and the intermittent feed mechanism 16 are changed from the left to the right, respectively. In the state of FIG .4 (b) , the driving motor 40 intermittently rotates to the left as shown in FIG .4 ( c) , and simultaneously, the j oint shaft 45 intermittently rotates to the left . As the carriage 20 is intermittently fed to the right along with the rotating strips 30 , the carriage 20 is intermittently fed to the right along the LM rail of the LM guide 25 , thereby intermittently feeding the coil guide 15 to the left in conjunction with the intermittent feed mechanism 16 on the core 12 mounted at the driving j ig 11.

[39] At this time, if the position of the carriage 20 is detected by the proximity sensor 23 located at the middle stroke end of the carriage 20, with the actuating dog 22 having been intermittently fed to the right, the carriage 20 is stopped readily when the driving motor 40 is turned off through a controller . That is , as the traverse device 60 repeats the above operation, the coil C supplied from the coil guide 15 is wound around the core 12 , thus forming a second layer .

[40] In this way, the traverse device 60 continuously repeats the above operations along with the intermittent feed mechanism 16, thus naturally allowing alignment winding . From this time, a real winding is performed, and as if building a high-rise building on a firm base, the alignment winding of the coil is accomplished well as intended, thereby forming an induction coil .

[41] Subsequently, the traverse 60 of the present invention does not linearly feed the coil guide 15 by a ball screw as in an conventional traverse, but reciprocates the coil guide 15 stably by transferring the torque of the driving motor 40 to the j oint shaft 45 and converting the torque transferred to the j oint shaft 45 to a linear feed force through the rotating strips 30, thereby fundamentally preventing backlash caused from linear feeding of the carriage 20 on the LM guide 25.

[42] In other words, the coil guide 15 is linearly fed directly from the carriage 20 by the rotating strips 30 by using the torque of the driving motor 40 , with almost zero backlash, and simultaneously fed along the LM guide at a target feed amount . In this way, the traverse 60 requires a bilateral reciprocation range of only 5mm or so, and thus there is no obstruction factor like, especially backlash, in actual implementation . Thus , backlash against the linear feeding of the coil guide 15 is perfectly prevented to thus enable the alignment winding of the coil C .

[43] As seen from above, the traverse of the present invention 60 can operate rapidly and accurately and facilitate improvement in productivity since there is no backlash at all and, while making the traverse lightweight overall and reducing the manufacture cost by simplifying the structure of the traverse unlike a conventional traverse .

[44] It is apparent to those skilled in the art that the present invention is not limited to the above embodiment but may be modified and changed without departing from the scope and spirit of the invention . Such changes and modifications are to be understood as included within the scope of the present invention as defined by the appended claims .

[45] As described above, the traverse device of a bobbinless coil winding machine for winding a certain coil in alignment around a core fixed to a j ig at a constant interval can operate rapidly and accurately and facilitate improvement in productivity since there is no backlash at all and, while making the traverse lightweight overall and reducing the manufacture cost by simplifying the structure of the traverse .

Claims

What is claimed is :

1. A traverse device of a bobbinless coil winding machine, which intermittently reciprocates a coil guide for guiding a coil 15 so that a coil is wound in alignment around a core fixed to a driving j ig on a main body, comprising : a carriage which is mounted by interposing the coil guide on the top surface , and mounted so as to be linearly movable by interposing a LM guide on a frame F of the main body; rotating strips which are fixed spaced each other to both opposite sides on the front surface of the carriage, and provides a feed force for linear feeding; a driving motor which has a j oint shaft that is rotatably mounted thereon, being held inside the rotating strips , and transfers a torque intermittently, being latched in the axial direction of the j oint shaft; a regulating means which is mounted by interposing a slider on the carriage so as to enable the tension regulation of the rotating strips ; and a detection means which generates a signal according to a shift in position of the carriage .

2. The traverse device as claimed in claim 1, wherein the regulating means further comprises the slider which is mounted so as to be movable on the carriages , with one ends of the rotating strips being fixed thereto, and a regulation bolt which is interposed to one side of the slider and elastically supported by a spring applying a pressure in the reverse direction with respect to the slider .

3. The traverse device as claimed in claim 1, wherein the detection means further comprises proximity sensors which are disposed at a stroke distance that corresponds to an actuating dog fastened to one side of the carriage .