JP3664685B2 - Wire insertion device and wire insertion method for workpiece hole - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire insertion device and a wire insertion method for a work hole in which an extra fine wire is penetrated (fitted) into a work hole provided in a work.
[0002]
[Prior art]
Conventionally, for example, in order to process a thin hole (work hole) of a ferrule (work) for an optical connector into a predetermined diameter, a wire having an outer diameter substantially the same as the inner diameter of the thin hole is passed through the thin hole, and the fine hole is formed by this wire Polishing is performed. Also, in various works other than the optical connector ferrule, it may be required to pass a wire (including an optical fiber or the like) through a narrow hole provided in the work.
[0003]
In recent years, in order to reduce the diameter of various parts, it is required to reduce the diameter of the workpiece hole and wire of this kind of workpiece (for example, the inner diameter of the workpiece hole and the outer diameter of the wire are both about 0.1 mm). It was. However, when the workpiece hole and wire of the workpiece are reduced in diameter, it becomes difficult to automatically insert the wire into the workpiece hole. This is because the centering between the workpiece hole and the wire becomes difficult due to the small diameter, and the rigidity of the wire is weakened. In addition, in the case of the wire fed from the bobbin, the wire has a curl and is inserted into the workpiece hole. This is because the tip portion of the wire to be curved is not straight and difficult to insert into the workpiece hole. For this reason, there has been a demand for a device for inserting a wire into a work hole that can be easily inserted even when the thinned wire is passed through the work hole of the thinned work.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and an object of the present invention is to provide a work hole that can be easily inserted into the work hole even when the work hole and the wire of the work are reduced in diameter, for example. To provide a wire insertion device and a wire insertion method.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a wire cutting means for cutting a wire drawn from a wire storage means at predetermined lengths, and the wire cutting means. To a predetermined length In a wire insertion device for a work hole comprising wire insertion means for inserting one end of the cut wire into a work hole of the work, the wire cutting means tries to cut the wire drawn from the wire storage means It comprises tension applying means for applying tension to the part, and wire heating cutting means for heating the wire applying part to improve the linearity of the wire and heating it to cut the wire. , On the other hand, the wire insertion means is provided with a wire insertion hole therein, and one end of the wire insertion hole is disposed so as to oppose the work hole on the side where the wire of the work is inserted, and is divided into a plurality of parts to divide the inside of the wire insertion hole. A wire guide having a structure separated from the passed wire, and one end portion of the wire cut into the predetermined length is gradually advanced toward the wire guide side, and the one end portion of the wire is passed through the wire insertion hole of the wire guide. Wire feeding means to be inserted into the workpiece hole of the workpiece, and a workpiece which is moved to the other end side of the wire in a state where the wire guide is divided into a plurality of parts and separated from the wire by the wire insertion means. And a moving means. It is characterized by.
[0007]
Further, the present invention provides a guide portion for guiding the insertion of the wire into the wire insertion hole by increasing the inner diameter of the wire insertion hole in a tapered shape at the end of the wire insertion hole of the wire guide on the side where the wire is inserted. It is characterized by that.
[0010]
The present invention also cuts the wire drawn from the wire storage means into a predetermined length, and To a predetermined length In the method of inserting a wire into a work hole in which one end of the cut wire is inserted into the work hole of the work, the cutting of the wire is performed with the tension applied to the wire pulled out from the wire storage means. This is done by heating the added part at a temperature that does not cut and improving the linearity of the wire, and then reheating the part to be cut in the part that has improved the linearity. The wire is inserted into the work hole by inserting one end of the wire into the wire insertion hole provided in the wire guide provided on the wire insertion side of the work, and further inserting the wire guide. The workpiece is inserted into the workpiece hole of the workpiece through the wire insertion hole, and the wire guide is further divided into a plurality of pieces and separated from the wire. Repeat the insertion operation into the workpiece hole to sequentially penetrate the workpiece through the wire. It is characterized by that.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic plan view showing the entire structure of a wire insertion device 1 into a work hole according to an embodiment of the present invention. As shown in FIG. 1, the wire insertion device 1 into the work hole includes a single wire drawing / cutting unit 10 and three wire insertion units 100. Each component will be described below together with its operation.
[0013]
[Structure of wire drawing / cutting portion 10 and wire cutting operation thereof]
The wire drawing / cutting unit 10 is configured by installing a bobbin (wire storage unit) 13 around which a wire is wound, a wire guide mechanism 17, a tension applying unit 21, and a wire heating / cutting unit 25 on a base 11. Has been.
[0014]
The base 11 is configured to be able to translate in the longitudinal direction of the ball screw 35 (in the direction of arrow A) by two guide rods 31 and 33 installed in parallel and a ball screw 35 installed in the center thereof. ing. That is, it is configured so that the wire used for the three wire insertion portions 100 can be moved to three places by one wire drawing / cutting portion 10.
[0015]
FIG. 2 is a schematic side view of the main part of the wire drawing / cutting unit 10. 2 and 1, the wire guide mechanism 17 is a mechanism for guiding the wire 5 pulled out from the bobbin 13 to the tension applying means 21. Here, the wire diameter of the wire 5 is about φ0.1 mm.
[0016]
The tension applying means 21 is configured by installing a drive unit 27 that is driven in the front-rear direction (the pulling-out direction of the wire 5, the arrow B direction) with respect to the drive mechanism unit 23 on the drive mechanism unit 23 on which the servo motor is installed. ing. A rack and pinion mechanism is installed between the drive mechanism unit 23 and the drive unit 27. By driving a servo motor (not shown) provided in the drive mechanism unit 23, the rack and pinion mechanism moves the drive unit 27 in the front-rear direction. To drive. Further, the drive unit 27 is provided with a grip unit 29 for gripping the wire 5.
[0017]
The wire heating / cutting means 25 is a heater in this embodiment, and when not in use, the wire heating / cutting means 25 is located at a position shifted laterally from just below the wire 5 as shown in FIG. In this way, the wire 5 is configured to move directly under the wire 5 when heated (in the direction of arrow C).
[0018]
Then, the wire cutting operation by the wire drawing / cutting unit 10 will be described. First, as shown in FIG. 2, the portion near the tip of the wire 5 drawn from the bobbin 13 through the wire guide mechanism 17 is the grip of the tension applying means 21. It is in a state of being gripped by the portion 29.
[0019]
In this state, the left grip part 111 of the cutting wire holding means 110 described below installed on the wire insertion part 100 side moves over the right grip part 115 to the vicinity of the tip of the wire 5 as shown in FIG. By gripping the vicinity of the tip of the wire 5 and returning to the original position while gripping, the wire 5 is pulled out from the bobbin 13 as shown in FIG. Grip 5
[0020]
Then, in FIG. 3B, the drive unit 27 of the tension applying means 21 is driven in a direction to retract the bobbin 13 so that a predetermined tension is applied to the wire 5 between the grips 115 and 29, and the tension is applied. Then, the wire heating and cutting means 25 is moved directly below the wire 5 to heat it. Heating at this time is performed by heat to such an extent that the wire 5 is not cut, and the straightness of the wire in the heated portion is improved. That is, since the wire 5 is wound around the bobbin 13, it has a curl and a curl that curls also at the part to be cut. Therefore, in order to eliminate the curl at the part of the wire 5 to be cut, the vicinity of the part to be cut is heated by the wire heating and cutting means 25 after applying tension to this part, so that the curl is removed. is there. Accordingly, the curl is removed only near the portion of the wire 5 to be cut. As a method of heating the wire 5 to such an extent that it does not cut, the wire heating cutting means 25 is shaken back and forth, left and right, up and down, the wire heating cutting means 25 is set at a position slightly separated downward, or the wire heating cutting means There are methods such as reducing the heating power of the 25 heating sources (flame) or adjusting the heating time.
[0021]
Next, when the work for removing the curl is completed, the portion to be cut of the wire 5 by the wire heating cutting means 25 is re-executed while the tension is applied by the tension applying means 21 as shown in FIG. Heat and cut. The wire 5 is cut by heating while the tension is applied, as shown in FIG. 4 (b), as shown in FIG. 4 (b), the wire 5 is melted by heating while the wire 5 is pulled from both sides. This is because the cut end portion of the wire 5 is tapered toward the tip end. The reason why the tip of the cut wire 5 is tapered is to allow the tip of the wire 5 to be inserted into the workpiece hole 201 of the workpiece 200 described below. That is, if the tip of the wire 5 is cut by a normal cutting means (for example, a nipper or the like), the cut portion becomes larger than the wire diameter of the wire 5, and the work hole 201 of the work 200 having a fitting accuracy with the wire 5 is formed. It is because it cannot pass. As a result, the wire 5 that has been cut to a predetermined length and whose cut end is tapered is held by the cutting wire holding means 110, and one wire drawing and cutting operation is completed.
[0022]
[Structure of Wire Insertion Part 100 and Wire Insertion Operation by Wire Insertion Part 100] Next, in FIG. 1, the wire insertion part 100 includes a cutting wire holding means 110 for holding the wire 5 drawn and cut from the wire drawing / cutting part 10. The wire insertion means 120 for holding the wire 5 received from the cutting wire holding means 110 and inserting a number of workpieces 200 described below from one end thereof, and the completion of holding a number of wires 5 having the workpieces 200 inserted therein. Product storage means 300, work supply means 350 for supplying work 200 to wire insertion means 120, and wire transfer means 400 for transferring wire 5 held by cutting wire holding means 110 to wire insertion means 120. Configured.
[0023]
Here, the cutting wire holding means 110 is constituted by two grip portions 111 and 115 that sandwich the wire 5. Further, the wire transfer means 400 is installed between the cutting wire holding means 110 and the wire insertion means 120, and receives the wire 5 held by the cutting wire holding means 110 and delivers it to the wire insertion means 120 for the delivery grip section 160, 161.
[0024]
FIG. 5 is a schematic side view of the wire insertion means 120 in a state where the grips 121 and 125 hold the wire 5. As shown in FIG. 1 and FIG. 1, the wire insertion means 120 includes a pair of grip portions 121 and 125 that receive the wire 5 from the cutting wire holding means 110 and a pair of grip portions 131 and 135 that are installed in front of the grip portion 121. Wire feeding means 130, a wire guide 140 installed in front of the wire feeding means 130, a workpiece holding section 150 for holding workpieces 200, 200 supplied from the workpiece feeding means 350, and a workpiece holding section 150. , A workpiece moving means 170 including a feed claw 171 and a grip portion 173 installed in front of (a left side in FIG. 5), and a wire end detection sensor 180.
[0025]
Here, the wire guide 140 is configured to join a pair of first and second wire guide portions 141 and 145 having a substantially semi-cylindrical shape so as to form a cylindrical shape as a whole. A wire insertion hole 142 through which the wire 5 is passed is formed, and a guide portion 143 extending conically is formed at the end of the wire insertion hole 142 on the wire feeding means 130 side. The inner diameter of the wire insertion hole 142 is about φ0.1 mm.
[0026]
The work holding part 150 is configured by installing two work pressing parts 153 and 155 above the work placing part 151. As shown in FIG. 6, the workpiece mounting portion 151 is configured by providing a linear V-shaped groove (storage portion) 152 for storing the workpiece 200 on the upper surface, and the workpiece pressing portions 153 and 155 are respectively V The two workpieces 200 housed in the character-shaped groove 152 are configured to move up and down in order to press the workpieces 200 from above. The work hole 201 of the work 200 on the wire guide 140 side placed on the work placement unit 151 faces one end of the wire insertion hole 142 of the wire guide 140.
[0027]
As shown in FIG. 6, the feed claw 171 is configured to have an insertion portion 172 that is inserted so as to sandwich the wire 5 at the center, and is configured to be movable up and down and in the longitudinal direction of the wire 5. .
[0028]
In addition, the workpiece 200 is made of a metal such as SUS in this embodiment as shown by a dotted line in FIG. 6 and is cylindrical (outside diameter: about 2.3 mm, length: about 10 mm) and has a center of about φ0.1 mm. The ferrule for optical connectors is provided with a work hole 201 formed of a thin hole, and a work insertion guide portion 203 extending in a conical shape is provided at one end of the work hole 201. Since the wire diameter of the wire 5 is also φ0.1 mm as described above, the wire 5 has a dimension that just fits into the work hole 201.
[0029]
On the other hand, FIG. 7 is a schematic plan view of the workpiece supply means 350. The workpiece supply means 350 accommodates a large number of workpieces 200 and vibrates so that the parts feeder 360 that discharges the workpieces 200 in a line in a line to the discharge unit 361 and the workpiece 200 at the head of the discharge unit 361 are not shown. A workpiece orientation detection means 365 that detects the orientation of the workpiece that is transferred and placed by the means, and a placement portion 369 that places one set (two in this embodiment) with the orientation of the workpiece 200 aligned. It is comprised. The workpiece orientation detection means 365 inserts an inspection probe 366 whose tip protrudes in a conical shape into one end of the workpiece hole 201 (see FIG. 6) of the workpiece 200. If the inspection probe 366 is inserted only shallowly if it is not inserted deeply, the side of the workpiece 200 where the workpiece insertion guide portion 203 is located is obtained, and the workpiece 200 is transferred from the workpiece orientation detection means 365 to the mounting portion 369. At this time, the side having the workpiece insertion guide portion 203 is aligned by a transfer means (not shown). Then, the two workpieces 200 aligned on the placement unit 369 are transferred to the V-shaped groove of the workpiece placement unit 151 by a workpiece transfer means (not shown) every time the workpiece 200 on the workpiece placement unit 151 (see FIG. 6) disappears. It is transferred and placed in 152.
[0030]
FIG. 8 is a perspective view showing an example of the finished product storage means 300. The finished product storage means 300 includes a large number of long storage grooves 301 that store the wires 5 that have passed through a large number of workpieces 200 one by one, and magnet suction portions 303 and 303 provided on both sides of the storage groove 301. It comprises.
[0031]
Next, the wire insertion operation by the wire insertion portion 100 will be described. First, the wire 5 cut as described in FIG. 3C is held by the two grip portions 111 and 115 of the cutting wire holding means 110. . Then, the wire 5 is transferred to the grip portions 121 and 125 of the wire insertion means 120 by the grip portions 160 and 161 of the wire transfer means 400 shown in FIG. 1, and is in the state shown in FIG.
[0032]
Next, as shown in FIG. 9A, the grips 121 and 125 are simultaneously moved toward the wire feed means 130, and at the same time, the tips of the wire 5 are gripped by the grip parts 131 and 135 of the wire feed means 130. .
[0033]
Next, as shown in FIG. 9B, the wire 5 is gripped again at a position where only the grip of one grip part 121 is moved away from the wire 5 and slightly moved backward.
[0034]
Next, as shown in FIG. 9C, the grips 121 and 125 are simultaneously moved by a predetermined length in the direction of the wire feeding means 130. The moving distance is the length from which the tip of the wire 5 reaches the wire end detection sensor 180 from the near side of the wire guide 140. As a result, the wire 5 is slackened and bent between the grip part 121 and the grip part 135. The wire 5 is loosened in this way when the wire 5 is subjected to an excessive tension when the wire 5 is fed into the workpiece 200 (fine feed) by the grip portions 131 and 135 of the wire feeding means 130 described below. Since slip occurs in 131 and 135, and the specified size cannot be sent if slip occurs, an error occurs. To prevent this, the wire 5 penetrates by a predetermined length as a slack in the wire 5 when it is finely fed. The feed was controlled to be taut at that point.
[0035]
Next, as shown in FIG. 9D, the two workpieces 200 placed on the workpiece placement unit 151 are pressed by the workpiece pressing units 153 and 155, respectively. At this time, the workpiece insertion guide portion 203 of the workpiece 200 is directed to the side where the wire 5 is inserted.
[0036]
Next, the tip of the wire 5 is gradually inserted into the workpiece hole 201 of the workpiece 200 through the wire insertion hole 141 of the wire guide 140 by the pair of grip portions 131 and 135 constituting the wire feeding means 130. Next, the operation will be described.
[0037]
That is, from the state shown in FIG. 10A, the grip part 131 is opened and the wire 5 is released as shown in FIG. 10B, and at the same time, the wire 5 is slightly moved by the grip part 135 (for example, about 1 mm to 3 mm). Next, as shown in FIG. 10 (c), the grip portion 131 is closed and the wire 5 is gripped, and at the same time, the rear grip portion 135 is opened and retracted to the original position, as shown in FIG. 10 (d). As shown in FIG. 10E, only the front grip 131 is opened, the wire 5 is released, and the wire 5 is slightly moved by the rear grip 135 (for example, about 1 mm to 3 mm). ) It moves to the wire guide 140 side. The feed length per step of the wire 5 can be easily changed by changing the movement amount of the grip part 135. If this operation is repeated, the wire 5 is inserted into the wire insertion hole 141 of the wire guide 140 in small increments, passes through this, and then inserted into the work hole 201 of the first workpiece 200. Through this, it is inserted into the work hole 201 of the second work 200 and passes through it. The wire guide 140 is installed on the front side of the first workpiece 200 so that the workpiece hole 201 and the wire insertion hole 141 are opposed to each other, and the tip of the wire 5 is heated while being pulled as described above. The wire 5 protrudes in a straight shape with respect to the wire insertion hole 141 and the work hole 201, and the tip of the wire 5 is tapered, and the wire insertion hole 141 and the work hole 201 are further tapered. Since the guide part 143 and the work insertion guide part 203 are provided respectively, the wire 5 can be inserted into the wire guide 140 and the works 200 and 200 very smoothly.
[0038]
When the wire 5 is inserted as described above and the tip of the wire 5 is detected by the wire end detection sensor 180 as shown in FIG. 11A, the wire advancement movement by the grip portions 131 and 135 is stopped. 11 (b), the vicinity of one end of the wire 5 is gripped by the grip portion 173, and the first and second wire guide portions 141 and 145 constituting the wire guide 140 are separated and opened at the same time. The grip portions 131, 135, 121 are also opened, the feed claw 171 is lowered, the wire 5 is sandwiched between the insertion portions 172 (see FIG. 6), and the workpieces 200, 200 are moved by the feed claw 171 as shown in FIG. Move to the rear end side of the wire 5. Thus, preparation for inserting the next workpiece 200, 200 from the tip of the wire 5 can be made. Then, the feeding claw 171 is returned to its original position, the wire 5 is returned to the original position shown in FIG. 5A by the grip portion 173 and the grip portion 125, the wire 5 is gripped by the grip portion 121, and the grip portion 173 is released. 11D, the wire guide 140 is closed as shown in FIG. 11D, and new workpieces 200, 200 are placed on the workpiece placement unit 151 from the placement unit 369 (see FIG. 7). Transfer and place. The state of FIG. 11D is the same as the state shown in FIG. 5 except that the workpieces 200 are inserted on the rear end side of the wire 5, and thereafter the same operation is repeated until the wire 5 is successively applied. And the workpiece 200 can be penetrated.
[0039]
By the way, in the case of this embodiment, only the workpiece 200 to be inserted last into the wire 5 has its workpiece insertion guide portion 203 reversed as shown in FIG. This depends on customer requirements.
[0040]
In this case, as shown in FIG. 12, the last workpiece 200 is not pressed by the workpiece pressing portion 153 and is left in a free state. This is due to the following reason. When trying to insert the tip of the wire 5 from the surface of the workpiece hole 201 where the workpiece insertion guide portion 203 is not provided, the center line of the workpiece hole 201 of the other workpiece 200 and the workpiece hole 201 of the last workpiece 200 is May not match exactly. This is due to a centering dimension error of the workpiece hole 201 at the time of manufacturing the workpiece 200, an error in the mounting state of the workpiece 200 on the workpiece mounting portion 151, and the like. In this case, when both the workpieces 200 and 200 are fixed by the workpiece pressing portions 153 and 155, the workpiece insertion guide portion 203 is not provided in the workpiece hole 201 on the side where the wire 5 of the last workpiece 200 is to be inserted. The positions of both workpiece holes 201 and 201 are slightly displaced, and the tip of the wire 5 may be bent at the joint of the workpieces 200 and 200 and cannot be penetrated.
[0041]
Therefore, in the present embodiment, by setting the last workpiece (rear workpiece) 200 to a free state, even if the tip of the wire 5 and the center line of the workpiece hole 201 of the workpiece 200 do not coincide slightly, The wire 5 can be easily inserted into the work hole 201 by moving the work 200 freely up and down, left and right. At this time, since the tip of the wire 5 is tapered in the cutting process as described above, the position of the workpiece 200 moves up, down, left, and right as long as the tip of the wire 5 enters the workpiece hole 201. The position is corrected, and thereafter, the wire 5 can be easily inserted into the work hole 201, which is preferable. In order to prevent the last workpiece 200 from being pushed backward by the rear side (the opposite side to which the wire 5 is inserted), a contact portion that abuts against the reverse side surface of the workpiece 200 to prevent the backward movement may be provided. .
[0042]
In this embodiment, the last workpiece 200 is reversed and the wire 5 is inserted from the side of the workpiece hole 201 where the workpiece insertion guide portion 203 is not provided. However, the workpiece insertion guide is similarly applied to the other workpieces 200. When the wire 5 is inserted from the side where the part 203 is not provided, the work 200 may not be fixed by the work pressing part 153 (or 155). When the wire 5 is inserted from the side where the workpiece insertion guide portion 203 is not provided for both the workpieces 200 and 200 placed on the workpiece placement portion 151, the workpiece pressing portion 153 is fixed to both the workpieces 200 and 200. , 155 may be avoided. The same applies to the workpiece 200 in which the workpiece insertion guide portion 203 itself is not provided.
[0043]
FIG. 13 is a diagram showing a state in which a desired number of workpieces 200 are penetrated through the wire 5 as described above. Since the wire 5 having penetrated the desired number of workpieces 200 is gripped at both ends by the grip portions 121 and 125, the finished product storage means shown in FIG. It is housed in a vacant storage groove 301 of 300, and both ends of the wire 5 without the workpiece 200 are sucked and fixed to the suction portions 303 and 303 and stored.
[0044]
Since the work of inserting the workpiece 200 into the wire 5 by the wire insertion part 100 requires a longer time than the work of cutting the wire 5 by the wire drawing / cutting part 10, three wires are inserted by one wire drawing / cutting part 10. If the cut wire 5 is not held by the cutting wire holding means 110 of any of the wire insertion portions 100, the wire drawing / cutting portion 10 is moved to the side of the wire insertion portion 100. Then, the wire 5 is supplied to the cutting wire holding means 110.
[0045]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited.
[0046]
For example, in the above-described embodiment, the wire 5 is repeatedly sent and stopped by the pair of grip portions 131 and 135 as the wire feeding means 130. However, the wire 5 is intermittently fed by a pair of feed rollers that feed the wire 5 while pinching it. Or continuous feed.
[0047]
In the above embodiment, the wire 5 is passed through the two workpieces 200 at a time. However, the wire 5 may be passed through one or three or more workpieces 200 at a time.
[0048]
The workpiece 200 is not limited to metal, and may be other various materials such as synthetic resin (zirconia, plastic, etc.). The shape and dimensions can be variously changed. Similarly, the wire 5 is not limited to metal, and may be made of various other materials.
[0049]
【The invention's effect】
As described above in detail, according to the present invention, even if the workpiece hole and the wire of the workpiece are reduced in diameter, the wire can be easily inserted into the workpiece hole.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an overall structure of a wire insertion device 1 into a work hole according to an embodiment of the present invention.
FIG. 2 is a schematic side view of a main part of a wire drawing / cutting unit 10;
FIG. 3 is an operation explanatory diagram of the wire drawing / cutting unit 10;
FIG. 4 is a diagram showing a method for cutting the wire 5;
FIG. 5 is a schematic side view of the wire insertion unit 120 in a state where the grips 121 and 125 hold the wire 5;
6 is a perspective view of a main part of a work holding unit 150. FIG.
FIG. 7 is a schematic plan view of the workpiece supply means 350. FIG.
8 is a perspective view showing a finished product storage means 300. FIG.
9 is an operation explanatory diagram of the wire insertion means 120. FIG.
FIG. 10 is an operation explanatory view of the wire feeding means 130.
11 is an operation explanatory view of the wire insertion means 120. FIG.
12 is an operation explanatory diagram of the wire insertion means 120. FIG.
13 is a view showing a state in which a desired number of workpieces 200 are penetrated through the wire 5 by the wire insertion means 120. FIG.
[Explanation of symbols]
1 Wire insertion device to work hole
10 Wire drawing and cutting part
13 Bobbin (Wire storage means)
17 Wire guide mechanism
21 Tension applying means (wire cutting means)
23 Drive mechanism
25 Wire heating cutting means (wire cutting means)
27 Drive unit
29 Grip part
100 Wire insertion part
110 Cutting wire holding means
111,115 grip part
120 Wire insertion means
121,125 Grip part
130 Wire feeding means
131,135 Grip part
140 Wire guide
141 1st wire guide part
142 Wire insertion hole
143 Guide part
145 Second wire guide part
150 Work holding part
151 Work place
153,155 Work pressing part
160,161 grip part
170 Work moving means
171 Feeding claw
173 Grip part
180 Wire end detection sensor
200 works
201 Work hole
203 Workpiece insertion guide
300 Finished product storage means
350 Work supply means
400 Wire transfer means

Claims (3)

Wire cutting means for cutting the wire drawn from the wire storage means at predetermined lengths, and wire insertion means for inserting one end of the wire cut by the wire cutting means into a predetermined length into the work hole of the work In the wire insertion device to the workpiece hole provided,
The wire cutting means includes a tension applying means for applying tension to a portion of the wire drawn from the wire storage means and a portion to which the wire tension is applied is heated to improve the straightness of the wire. Wire heating and cutting means for cutting the wire by heating,
On the other hand, the wire insertion means is provided with a wire insertion hole therein, and one end of the wire insertion hole is disposed so as to oppose the work hole on the side where the wire of the work is inserted, and is divided into a plurality of parts to divide the inside of the wire insertion hole. A wire guide having a structure separated from the passed wire, and one end portion of the wire cut into the predetermined length is gradually advanced toward the wire guide side, and the one end portion of the wire is passed through the wire insertion hole of the wire guide. Wire feeding means to be inserted into the workpiece hole of the workpiece, and a workpiece which is moved to the other end side of the wire in a state where the wire guide is divided into a plurality of parts and separated from the wire by the wire insertion means. An apparatus for inserting a wire into a work hole, characterized by comprising a moving means . A guide portion for guiding the insertion of the wire into the wire insertion hole by increasing the inner diameter of the wire insertion hole in a tapered shape is provided at the end portion of the wire guide on the side of inserting the wire. The apparatus for inserting a wire into a work hole according to claim 1 . In the wire insertion method into the work hole, the wire drawn out from the wire storage means is cut into a predetermined length, and one end of the wire cut into the predetermined length is inserted into the work hole of the work.
In the cutting of the wire, the wire drawn out from the wire storage means is kept in a tensioned state, the heated portion is heated at a temperature at which the wire is not cut to improve the straightness of the wire, and then the straightness is adjusted. There row by reheating the portion to be cut in with improved moiety,
The wire is inserted into the workpiece hole by inserting one end of the wire into the wire insertion hole provided in the wire guide installed on the wire insertion side of the workpiece, and further inserting the wire of the wire guide. Insert the wire into the work hole of the work through the insertion hole, and further move the work with the wire inserted into the other end side of the wire while separating the wire guide and separating it from the wire. A method of inserting a wire into a workpiece hole, wherein the workpiece is sequentially passed through the wire by repeating the insertion operation into the hole.

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