JPS6366048B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of winding wire onto a bobbin in an automatic winding machine, and in particular, it facilitates attaching a wire to a coil terminal and cutting a crossover wire between a coil terminal and a wire holder. In addition to being able to easily extract and remove wire scraps stuck to the wire holder, automatic wire winding can improve the range of functions and reduce the space occupied around the bobbin. This article relates to a method for winding a bobbin in a machine.

In recent years, in manufacturing intermediate frequency transformers and various transformers/relays, etc., winding machines have been proposed that can automatically wind the wire onto the bobbin body as well as attach the wire to the coil terminal as a series of operations. It has come to be. However, conventional automatic winding machines
In addition to moving the wire holder when winding the wire on the bobbin body or attaching it to the coil terminal, the wire holder is moved using the base end of the wire holder as a fulcrum in order to form a crossover wire between the coil terminal and the wire holder. Since this method involves swinging the tip, the movement of the wire holder is restricted by the mechanism that drives it, making it difficult to shorten the length of the crossover wire. The removal method is also carried out in the same plane as the winding on the bobbin body and the tying to the coil terminal, so the wire scrap removed from the wire holder does not interfere with the winding on the bobbin body or the winding on the coil terminal. During the operation of attaching wires to the terminals, there were various problems such as inadvertent tangles that were mixed in, resulting in defective products, and that there was room for improvement in terms of the appearance of the machine.

Therefore, the present invention has been made in view of the above circumstances, and is intended to facilitate winding the wire onto the bobbin body and attaching the wire to the coil terminal, as well as making it easier to extract and remove wire scraps from the wire holder. In addition, it is possible to prevent wire scraps from accidentally getting into the bobbin or various drive mechanisms during the winding operation of the coil on the bobbin, and to move and set the wire holder to a position that conforms to the coil winding specifications. An object of the present invention is to provide a method for winding a bobbin in an automatic winding machine, which can be expected to reduce the space occupied by the entire device around the bobbin.

In order to achieve the above-mentioned object, the present invention is an automatic winding machine that winds the body of a bobbin and wraps the wire rods that are to become the starting and ending ends of the winding around the coil terminals of the bobbin. The wire holder to which the starting end of the wire to be attached is attached is moved to the side of one coil terminal, and the wire guide nozzle rotates around the coil terminal to attach the wire to the coil terminal. After attaching, the crossover wire between the coil terminal and the wire holder is cut by rotating the wire holder, and then the wire holder is lowered and inserted into the discharge sleeve to remove wire scraps that get caught in the wire holder. After the wire is removed and the bobbin is rotated to wind the bobbin body, the wire holder is moved to the side of the other coil terminal, and the wire guide nozzle rotates around the other coil terminal. Then, attach the winding that will be the end of the coil to the other coil terminal, and then the wire guide nozzle rotates around the wire holder to wrap the winding around the wire holder, and then attach the winding to the other coil terminal. This method is characterized by a method of winding a bobbin in an automatic winding machine, in which a crossover wire between the wire and the wire holder is cut by rotation of the wire holder, and the process is repeated every time the bobbin is wound thereafter.

An embodiment of a method for winding a bobbin in an automatic winding machine according to the present invention will be described below with reference to the drawings.
First, referring to FIGS. 1 to 3, the apparatus for carrying out the method of the present invention will be explained.
In the figure, 1 is a wire rod, and the rear shelf 2 of the device main body A
It is designed to be fed out from a drum 3 installed at A corresponding number of drums 3 are installed so that a plurality of bobbins can be wound simultaneously. Each wire 1 has an appropriate number of guide members 4 such as rollers.
The wires are introduced into the wire guide nozzle 5 through the respective wire guide nozzles 5. Each wire guide nozzle 5
is attached to the rotation shaft 6 as described later. The rotation shaft 6 is rotatably supported by left and right drive columns 7, 7, and can be moved back and forth, left and right, and up and down by driving the drive columns 7, 7. A bobbin holder 8 is provided in correspondence with each wire guide nozzle 5 and can be positioned near each guide nozzle 5. Each bobbin holder 8 is rotated by a motor whose drive is controlled according to the number of windings to be wound on the body of the bobbin attached to the tip thereof. Each bobbin holder 8 is attached to a rotating support 9, and while one bobbin is being wound, a bobbin is attached to the rotating support 9 so that a bobbin can be attached to the tip of the other bobbin holder 8.
A suitable number of bobbin holders 8 are provided so as to protrude at the front and rear positions, respectively.

A wire holder 10 is provided near each wire guide nozzle 5. Each wire holder 10 is mounted on a mounting board 11, as shown in FIG. The mounting board 11 can be moved back and forth by a first air cylinder 12. That is, the first air cylinder 12
The proximal end 12a of the piston rod 14 is rotatably attached to the main body base 13, and the distal end 14a of the piston rod 14 is connected to one side of the driven rod 15. The driven rod 15 is supported near both ends by thrust bearings 16, 16 so as to be movable in the axial length (thrust) direction, and the mounting board 11 is connected to the other end of the driven rod 15. A support plate 18 for a wire holder is mounted on the mounting board 11 so as to be movable in the left and right direction with respect to the mounting board 11 with bearings 17, 17 interposed therebetween. 19 is attached, and the piston rod 19a of the second air cylinder 19 is connected to the support plate 18,
The second air cylinder 19 allows the support plate 18 to move in the left-right direction. The movement range in the left and right direction can be adjusted by turning a screw 34 screwed into the mounting board 11. That is, screw 3
The position of the support plate 18 in contact with the tip of the support plate 18 is adjusted. A storage case 20 for storing each wire holder 10 is provided on the support plate 18 so as to be movable up and down guided by guide rods 21, 21 fixed to both ends of the support plate 19. The base end of the third air cylinder 22 is attached to the support plate 19, and the piston rod 23 of the third air cylinder 22 is connected to the storage case 20, as shown in FIG. The storage case 20 is configured to move up and down when driven. Each wire holder 10 is inside the storage case 20.
The base of is rotatably supported by a bearing 30. Each wire holder 10 has a pinion gear 24 at the lower end, and each pinion gear 2
4 is meshed with rack 25. The rack 25 is the piston rod 27 of the fourth air cylinder 26.
and the fourth air cylinder 2
The base end of 6 is connected to the storage case 20 side.
A contact plate 28 is provided inside the storage case 20. The abutment plate 28 is loosely fitted onto guide pins 50, 50 installed upright on the storage case 20, and the engagement plate 28
A discharge operation plate 28 fixed to the support plate 18 via b
a, and can move forward and backward and left and right together with the support plate 18. However, when it comes into contact with the ejection operation plate 28a via the engagement plate 28b, the storage case 20
The wire holders 10 are not designed to move vertically together with the wire holder 10, but are provided with holes 29 into which each of the wire holders 10 is fitted so as to be vertically movable. On the other hand, a discharge sleeve 3 is fixed to each wire holder 10 at a position slightly below the tip, and is movable up and down relative to the tip of the wire holder 10 above the locking step 31.
2 is inserted. As shown in FIGS. 4 to 7 and further in FIGS. 9 to 13, each wire holder 10 has a wire rod 1 formed into a substantially rectangular planar shape with a tip having the same radius of curvature as the other portions. The engagement part 33 is formed.

Each wire guide nozzle 5 is fixed to a rotating shaft 6. The rotating shaft 6 is rotatably supported by drive columns 7, and a pinion gear 35 provided at one end of the rotating shaft 6 is meshed with a rack 36 movably supported within the drive column 7. , with each wire guide nozzle 5 holding its tip at the same position,
In other words, it can be rotated 90 degrees around the tip. The rack 36 is driven by an air cylinder. On the other hand, the driving column 7,
7 is configured to be able to move back and forth together with each wire guide nozzle 5 by a back-and-forth movement device 37 that is a combination of a servo motor and a ball screw, and can also be moved in left-right and up-down directions by a device that is not shown in the drawings and is a servo motor and a ball screw. It's getting old.

First, the bobbins 38 are fitted into the respective bobbin holders 8 in the front row shown in FIG. . To rotate the rotary support 9 180 degrees as described above, the bobbin 3
A bobbin holder 8 which is not fitted is located on the front side, and the bobbin 38 is fitted into the bobbin holder 8 in preparation for the next winding.

Next, since the winding operation is the same for each bobbin 38, one bobbin 38 will be described. First, as shown in FIG.
0, and the wire holder 1
0 to the side of one coil terminal 38a of the bobbin 38 (position P in FIG. 4) as shown in FIGS. 4 and 14. This movement is performed by driving the first air cylinder 12. Next, the wire guide nozzle 5 is rotated 90 degrees around the tip, and after being positioned so that the wire guide nozzle 5 faces the longitudinal direction of the coil terminal 38a, the wire guide nozzle 5 is moved vertically and horizontally as shown in FIG. The wire guide nozzle 5 is rotated in a circular trajectory around the coil terminal 38a by a combined operation, and the wire 1, which is to become the starting end of the coil, is wound around the coil terminal 38a, and the wire guide nozzle 5 The coil terminal 38a is gradually moved backward and forward by the back and forth operation device 37.
The wire rod 1 is neatly wound into a coil shape. When the winding around the coil terminal 38a is completed, as shown in FIG. 7, the wire holder 10 is rotated by the fourth air cylinder 26 via the rack 25 and the pinion gear 24, and the wire holder 10 and the coil are rotated. Cut the crossover wire 1a between it and the terminal 38a. The cutting location is such that the cylindrical portion 10a of the wire holder 10 has a larger diameter than the coil terminal 38a, and the coil terminal 38a has a cross section of 4.
Since the coil terminal 38a has a square shape, it is cut at the corner of the coil terminal 38a. Even when the cross-sectional shape of the coil terminal 38a is circular, cutting conditions can be improved by increasing the diameter of the cylindrical portion 10a and carefully adjusting the distance between the bobbin 38 and the wire holder 10. Next, as shown in FIG. 8, the third air cylinder 22 is driven to lower the storage case 20, that is, the wire holder 10, and the discharge sleeve 32 comes into contact with the contact plate 28, so that the wire holder 10 As a result, the cut wire scraps 16 wound around the tip of the wire holder 10 are removed from the wire holder 1 by the discharge sleeve 32.
After being pushed out and extracted from the 0, it falls into a lower hopper (not shown) and is collected. Wire scrap 16
After the wire holder 10 is pulled out and removed, the wire holder 10 remains in the lowered state and is moved by the second air cylinder 19 to the ninth
The other coil terminal 38 as shown in FIG.
After moving to position b (position Q in FIG. 14), the wire holder 10 is raised by the drive of the third air cylinder 22, and as the wire holder 10 rises, the discharge sleeve 32 descends to the locking step 31 and is locked. do. On the other hand, the wire guide nozzle 5 is rotated 90 degrees to stand upright, and is moved forward to above the body 38c of the bobbin 38 by the drive of the back-and-forth movement device 37, and moves toward the bobbin holder 8 as shown by arrow C in FIG. With this rotation, the winding 1c is applied by a preset number of windings. During the winding operation on the body portion 38c of the bobbin 38, the wire guide nozzle 5 moves forward and backward as if scanning by driving the back and forth movement device 37, and winds the wire neatly into a coil shape. After the predetermined winding operation is completed, the wire guide nozzle 5 is moved to the vicinity above the other coil terminal 38a as shown in FIG.
Similarly to the above, the wire guide nozzle 5 is rotated 90 degrees and positioned so that the wire guide nozzle 5 faces in the longitudinal direction of the other coil terminal 38b,
Further, the wire guide nozzle 5 is rotated around the coil terminal 38b, and the wire 1 which is to become the end of the coil is attached to the coil terminal 38b. Next, as shown in FIG. 11, the wire guide nozzle 5 is rotated 90 degrees around the tip to stand upright, and then moved to the vicinity of the wire holder 10.
Needless to say, this movement is performed by moving the drive columns 7, 7 by combining the movements of the longitudinal, vertical, and lateral movement devices as described above. Furthermore, as shown in FIG. 12, the wire guide nozzle 5 is moved back and forth, up and down, and left and right by driving the wire holder 1 again.
0 and wind the wire 1 around the wire holder 10. The wrapping method is to first wrap the cylindrical portion below the engaging portion 32 several times, and then wrap it around the engaging portion 32 several times. As a result, the engagement portion 32 maintains a strong engagement with the wire 1, and by wrapping it around the cylindrical portion, it is possible to prevent the crossover wire 1d from being accidentally cut near the wire holder 10. can. Next, as shown in FIG. 13, the wire holder 10 is rotated in the same manner as described above, and the wire holder 10 and the coil terminal 38 are
The crossover wire 1d is cut between the coil terminal 38b and the coil terminal 38b. At this time, the wire 1 between the wire guide nozzle 5 and the wire holder 10 is not cut, and in this state, the wire holder 10 is moved back to the R position by the drive of the first air cylinder 12, as shown in FIG. After that, the second air cylinder 19 is driven to move it to the S position to prepare for the next winding. On the other hand, the winding bobbin 38
In this case, the rotary support 9 rotates by 90 degrees in the direction shown by the arrow B in FIG. It is pulled out from the bobbin holder 8 and falls onto a hopper (not shown).
Furthermore, after the bobbin is removed, the rotating support 9
Rotate 90 degrees to complete the series of movements. Before the rotary support 9 is rotated 180 degrees, the bobbin 38 to be wound next is attached to the bobbin holder 8 located on the front side in advance, so that the rotary support 9 is rotated 180 degrees. When rotated, the above-mentioned tying operation of the coil terminals 38a, 38b located near the wire guide nozzle 5 and winding operation on the body portion 38c of the bobbin 38 are performed, and thereafter the rotary support body 9 is rotated 180 degrees. It is repeated every time.
Each of the above operations is controlled by a microcomputer.

FIG. 15 shows another embodiment in which each coil terminal 38a', 38b' of a bobbin 38' is formed in an upright state perpendicular to the axis of the bobbin 38'.
Even when attaching the windings 1', which are to become the starting and ending ends of the coil, to the coil terminals 38a' and 38b', the wire guide nozzle 5 is not rotated 90 degrees.
It may be performed in an upright position, and the rest is exactly the same as the previous embodiment.

As described above, according to the method for winding a bobbin in an automatic winding machine according to the present invention, by simply rotating the wire holder, the crossover wire between the wire holder and the coil terminal can be cut, and the wire holder can be moved into the ejection sleeve. The device is inserted into the wire holder to extract and remove wire scraps that get stuck in the wire holder, so the wire holder can be operated in a variety of ways, easily adapting to changes in the shape of the coil, and freeing up the space around the coil. It can be used effectively and has great effects such as not only simplifying the process of attaching the wire to the coil terminal but also making it easy to cut the connecting wire between the coil terminal and the wire holder.

[Brief explanation of drawings]

The drawings show an embodiment of a method for winding a bobbin in an automatic winding machine according to the present invention, FIG. 1 is an overall perspective view of the automatic winding machine, and FIG. 2 is a longitudinal sectional view showing a drive mechanism of a wire holder. Figure 3 is a front view of the main parts showing the drive mechanism of the wire holder, Figures 4 to 1
Figure 4 is an explanatory diagram showing the method of winding the bobbin, No. 15.
The figure is an explanatory diagram showing a method of winding another type of bobbin. 1... Wire rod, 1a, 1d... Crossing wire, 1d... Wire rod scrap, 1c... Winding wire, 2... Rear shelf, 3... Drum, 4...
Guide part, 5... Wire guide nozzle, 6... Rotating shaft, 7... Drive column, 8... Bobbin holder, 9... Rotating support body, 10... Wire holder, 11... Mounting board, 12... First air cylinder, 13... Main body base, 14... Piston rod, 15... Driven rod, 16... Thrust bearing, 17... Bearing, 1
8...Support plate, 19...Second air cylinder, 20
...Storage case, 21...Guide rod, 22...Third
air cylinder, 23...piston rod, 24
... Pinion gear, 25... Rack, 26... Fourth air cylinder, 27... Piston rod, 28... Contact plate, 29... Hole, 30... Bearing, 31
...locking step portion, 32...discharge sleeve, 33...engaging portion, 34...screw, 35...pinion gear, 36...
Rack, 37... Feeding device by servo motor,
38...Bobbin, 38a, 38b...Coil terminal, A
...Device body, 40...Coil removal plate.

Claims (1)

[Claims] 1. In an automatic winding machine that winds the body of a bobbin and ties the wire that is to become the starting and ending ends of the winding to the coil terminals of the bobbin, first the starting end of the wire that is fed out from the wire guide nozzle is tied. The wire holder is moved to the side of one coil terminal, and the wire guide nozzle rotates around the coil terminal to attach the wire to the coil terminal, and then the coil terminal and the wire holder are removed. By rotating the wire holder, the crossover wire is cut between the wire holder and the wire holder, and then the wire holder is lowered and inserted into the discharge sleeve to extract and remove wire scraps that are stuck to the wire holder. After the bobbin body is wound, the wire holder is moved to the side of the other coil terminal, the wire guide nozzle rotates around the other coil terminal, and the wire is wound around the other coil terminal. Then, the wire guide nozzle rotates around the wire holder to wrap the wire around the wire holder, and then connect the wire between the other coil terminal and the wire holder. A method for winding a bobbin in an automatic winding machine, which cuts the wire by rotating a wire holder and repeats the process every time the bobbin is wound thereafter.