JPH0684456A - Method for attaching fine wire to fine-wire supporting cathode - Google Patents

Abstract

PURPOSE:To automatically attach a molded fine wire to a sleeve type cathode structure while securing a normal molded state of the fine wire by preventing deformation of the molded fine wire when welding the molded fine wire and a cup both to the apex of the sleeve type cathode structure. CONSTITUTION:First an unmolded fine wire 2 is carried to the apex of a sleeve type cathode structure 1 by a fine-wire holding jig 9. Next, the unmolded fine wire 2 is drawn up to its plastic deformation area with both end portions kept held by the fine-wire holding jig 9 and is rotated about a point of rotation located at the periphery of the apex and is molded into a trapezoid. Then the molded fine wire 3 is temporarily attached to the apex of the sleeve type cathode structure 1 and a cup 4 is carried to the apex of the sleeve type cathode structure 1. Finally the cap 4 is welded, together with the molded fine wire 3 temporarily attached, which is then attached to a fine-wire holding cathode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a fine wire together with a cup to a fine wire supporting cathode, and more particularly to a method of forming a thin wire and a cup on the top of a sleeve type cathode assembly. The method for attaching a thin wire in a thin wire supporting cathode adopting a process in which the thin wire is not deformed.

[0002]

2. Description of the Related Art Conventionally, as a method of attaching a formed thin wire to a thin wire supporting cathode, first, a sleeve type cathode assembly, and a formed thin wire and a cup to be attached to the top of the sleeve type cathode assembly are prepared. Next, the shaped thin wire and the cup are conveyed while being attached to the top of the sleeve-type cathode assembly, and then electrodes for welding are inserted into the sleeve of the sleeve-type cathode assembly and the inside of the cup, respectively. Then, a predetermined voltage is applied between the welding electrodes, and the welding electrode is pressed by the welding electrodes to simultaneously form the formed thin wire and the cup on the top of the sleeve-type cathode assembly. Means of welding were used.

According to this simultaneous welding means, the welded portion is heated and pressed, and when the welding is completed, the formed thin wire is welded in the top of the sleeve type cathode assembly and in the cup respectively. It is what is done.

FIG. 5 is a sectional view showing a state when the simultaneous welding means is carried out. 20 is a sleeve type cathode assembly, 21 is a formed thin wire, 22 is a cup, and 24 is for lower welding. An electrode, 25 is an upper welding electrode.

With the thin wire 21 and the cup 22 already formed on the top of the sleeve-type cathode assembly 20, the lower welding electrode 24 and the upper side of the sleeve-type cathode assembly 20 and the cup 22 are placed. Welding electrode 2
5 is inserted, a predetermined voltage is applied between these electrodes 24 and 25, and a predetermined pressure is applied to the welded portion by these electrodes 24 and 25, and the thin wire 21 and the cup formed on the top of the sleeve-type cathode assembly 20 and the cup. 22 and 22 are simultaneously welded.

[0006]

By the way, in the above-mentioned conventional method of attaching a thin wire, the welded portion of the formed thin wire 21 is heated and pressed at the time of the simultaneous welding, so that the cup 22 and the sleeve type cathode assembly 20 are heated. However, since the diameter of the cup 22 is usually smaller than the diameter of the top of the sleeve-type cathode assembly 20, the formed thin wire 2 on the top of the sleeve-type cathode assembly 20 is buried.
Since the portion of the outer peripheral portion of the cup 22 outside the outer diameter of the cup 22 is hardly subjected to the heating or pressurization, it is not buried in the top of the sleeve-type cathode assembly 20, and as shown in FIG. Originally, after the shaped thin wire 21 is welded, the position as shown by the solid line must be maintained, but in reality, there is a problem that the foot part is greatly opened as shown by the dotted line. .

Further, in the above-mentioned conventional method of attaching a thin wire, since the dirt is inevitably attached to the thin wire when the unformed thin wire is formed, the formed thin wire 21 before the simultaneous welding is performed.
On the other hand, it is necessary to clean the dirt, but there is a problem that the molded portion is deformed when the molded thin wire 21 is washed, and the molded thin wire 2 is used.
There is also a problem that the formed part is deformed even when the item 1 is transported.

Further, in the above-mentioned conventional method of attaching a thin wire, it is difficult to flatly form a formed portion when forming an unformed thin wire, and the formed portion of the unformed thin wire is formed in a twisted state. There is a problem, and on top of that, it is difficult to load the shaped thin wire 21 into an automatic machine for welding or the like and perform automatic loading.

The present invention eliminates these problems, and an object of the present invention is to attach a formed thin wire to a sleeve type cathode assembly in a normally formed state, and to perform the attachment automatically. Another object of the present invention is to provide a method of attaching a fine wire in a fine wire supporting cathode, which can be carried out.

[0010]

In order to achieve the above object, the present invention firstly conveys an unformed thin wire to the top of a sleeve type cathode assembly by a thin wire holding jig, and then the thin wire holding jig. While holding both end portions of the unformed thin wire, while rotating the unformed thin wire to its plastic deformation region, the unformed thin wire is rotated around the turning point of the top peripheral portion to form the unformed thin wire into a trapezoidal shape. , Next, temporarily applying the formed thin wire to the top of the sleeve-type cathode structure, then transporting the cup to the top of the sleeve-type cathode structure, and finally, forming the formed mold with the cup temporarily attached. Means for attaching the fine wire to the fine wire supporting cathode by welding together with the fine wire is provided.

[0011]

According to the above-mentioned means, the unformed thin wire is formed into a trapezoidal shape in a state of being stretched to its plastic deformation region, and the formed thin wire is temporarily attached to the top of the sleeve type cathode assembly, and then, Since the temporarily formed thin wire is welded to the top of the sleeve type cathode assembly together with the cup, the molded portion of the formed thin wire is not deformed when the cup is welded, and, Since the springback of the formed thin wire is extremely small, the dimensional accuracy of the formed thin wire can be improved.

In this temporary attachment, if the formed thin wire is temporarily attached using a welding electrode having a diameter larger than the outer diameter of the sleeve type cathode assembly, the formed thin wire and the sleeve type cathode are attached. Over the entire joint with the top of the structure,
Since the formed thin wire is temporarily attached in a state of being evenly buried in the top, when the cup is subsequently welded to the top of the sleeve type cathode assembly, the outer diameter of the cup in the formed thin wire The outer part of the wire does not float above the top, and the formed part of the formed thin wire is almost completely free from deformation.

Further, according to the above-mentioned means, the steps of obtaining an unformed thin wire from a long thin wire, shaping it, and welding and attaching it to the top of the sleeve type cathode assembly are performed substantially continuously. Therefore, it becomes extremely easy to perform the above steps by an automatic machine.

Since the unformed thin wire is initially in a state in which a long thin wire that has been washed is wound around a reel, it can be easily transported and stored.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

1 (a) to 1 (d) are system diagrams showing an embodiment of a method of attaching a fine wire to a fine wire supporting cathode according to the present invention.

In FIG. 1, reference numeral 1 denotes a sleeve type cathode assembly,
2 is an unformed thin wire, 3 is a formed thin wire, 4 is a cup, 5 is a sleeve type cathode structure holding jig, 6 is a reel, 7 is a thin wire guide, 8 is a thin wire drawing jig (drawing chuck), and 9 is a thin wire. A holding jig (clamp chuck), 10 is a fine wire temporary attachment electrode, and 11 is a cup welding electrode.

The sleeve-type cathode structure 1 is fitted into the sleeve-type cathode structure holding jig 5 and held in a state of being rotatable in the axial direction thereof. The reel 6 is wound with a long thin wire that has been cleaned, and the tip of the thin wire is inserted into the thin wire guide 7. The thin wire drawer check 8 is
It is always located near the exit of the thin wire guide 7 and is configured to move backward in the direction of arrow A when actuated. The fine wire clamp chuck 9 is always located at a position distant from the vicinity of the outlet of the fine wire guide 7. However, the fine wire clamp chuck 9 appropriately advances in the direction of the arrow B orthogonal to the direction A of the arrow at the time of operation, and has various types as described later. It is configured to perform a function. The fine wire temporary attachment electrode 10 has a diameter larger than the diameter of the top portion of the sleeve-type cathode assembly 1, and the cup welding electrode 11 is the cup 4
Has a diameter that can be inserted into the inside, and is arranged on the upper part of the top of the sleeve type cathode assembly 1 to form an upper electrode. These electrodes 10 and 11 selectively descend near the top and cooperate with the sleeve-type cathode assembly holding jig 5 that also serves as the lower electrode, and the thin wire 3 formed on the top of the sleeve-type cathode assembly 1 is formed. Is temporarily attached or the cup 4 is welded.

In this embodiment having the above-mentioned structure, the following operation is executed.

First, as shown in FIG. 1 (a), a reel 6 around which a cleaned long thin wire is wound is loaded in a predetermined position of an automatic machine (not shown), and a sleeve type cathode assembly is also mounted. 1 is fitted into and mounted on the sleeve type cathode structure holding jig 5 of the automatic machine. Next, the tip of the long thin wire is inserted into the thin wire guide 7, and subsequently, the tip is gripped by the thin wire drawing chuck 8. After that, the thin wire drawing chuck 8 is retracted in the direction of the arrow A, and the thin wire is pulled out by a predetermined length. Next, as shown in FIG. 1B, the thin wire clamp chuck 9 is transferred between the thin wire guide 7 and the thin wire drawing chuck 8 so that both end portions of the drawn thin wire are connected to the thin wire clamping chuck 9. To hold. Next, the thin wire is cut while being held by the thin wire clamp chuck 9 by the action of a cutting portion (not shown) provided at the rear portion of the thin wire clamp chuck 9, To form. Then, FIG. 1 (c)
As shown in FIG. 3, while holding the unformed thin wire 2, the thin wire clamp chuck 9 is moved in the direction of the arrow B to move the unformed thin wire to a position close to the top of the sleeve type cathode assembly 1. . Then, while holding the unformed thin wire 2, the thin wire clamp chuck 9 is removed as shown in FIG.
The unformed thin wire 2 is formed by turning as shown by an arrow C in (c) to form a trapezoidal formed thin wire 3. Then, the fine wire temporary attachment electrode 10 is lowered from the upper side of the top of the sleeve type cathode assembly 1 to the top, and further, between the fine line temporary attachment electrode 10 and the sleeve type cathode structure holding jig 5. By applying a predetermined voltage, the formed thin wire 3 is temporarily attached to the top of the sleeve type cathode assembly 1. In addition, the temporary attachment of the formed thin wire 3 is as shown in FIG.
It is preferable to use the fine wire temporary attachment electrode 10 having a diameter larger than the diameter of the top of the sleeve-type cathode assembly 1, as shown in FIG.

Next, while the sleeve-type cathode assembly 1 is mounted on the sleeve-type cathode assembly holding jig 5, the sleeve-type cathode assembly 1 is rotated about 90 degrees about its axis. In the same manner as in the above case, another formed thin wire 3 is temporarily attached to the top of the sleeve type cathode assembly 1. Finally, as shown in FIG. 1 (d), the cup 4 is conveyed to the top of the sleeve-type cathode assembly 1, and then the cup welding electrode 11 is placed on the top of the top of the sleeve-type cathode assembly 1. Then, a predetermined voltage is applied between the cup-welding electrode 11 and the sleeve-type cathode assembly holding jig 5 to lower the two, which are temporarily attached to the top of the sleeve-type cathode assembly 1 with the cup 4. The thin wire 3 that has already been formed is welded and attached.

By the way, FIGS. 2A and 2B show a case where the trapezoidal shaped thin wire 3 is formed by forming the unformed thin wire 2 by rotating the thin wire clamp chuck 9. It is explanatory drawing which shows the operation | movement.

In FIG. 2, O ₀ is the center of the top of the sleeve type cathode assembly 1, O ₁ and O ₂ are two pivot points separated by a distance 1 from the center O ₀ of the top of the sleeve type cathode assembly 1, R
Is the radius of the arc drawn by the fine wire clamp chuck 9 which turns around _two turning points O ₁ and O ₂ , and L ₁ is both turning points O
Spatial distance from ₁ , O ₂ to thin wire clamp chuck 9,
L ₂ is a thin wire clamp chuck 9 from both turning points O ₁ and O _2.
It is the length of the thin line part up to.

In this embodiment, as shown in FIG. 2 (a), the thin wire clamp chuck 9 is provided with two turning points O ₁ , which are separated from the center O ₀ of the top of the sleeve type cathode assembly 1 by a distance l. It is made to turn so as to draw an arc of radius R about O ₂ as a center. In this case, assuming that the thin wire of the portion gripped by the thin wire clamp chuck 9 does not extend, as shown by the solid line in FIG. 2B, the unformed thin wire 2 is formed when the unformed thin wire 2 is formed. It comes to stretching an amount corresponding to the difference between the length L ₂ and the spatial distance L ₁ of the thin line portion (L ₂ -L ₁₎ is. By the way, in the present embodiment, since the length L ₂ is set so that the thin wire 3 that has been formed is plastically deformed by this extension, the springback in the thin wire 3 that has already been formed is extremely small, so that It is possible to improve the dimensional accuracy of the molded thin wire 3 at the time of molding.

As described above, according to this embodiment, the unformed thin wire 2 is formed into a trapezoidal shape while being stretched to its plastic deformation region, and the formed thin wire 3 is formed into the sleeve type cathode assembly 1.
After the temporary attachment of the formed thin wire 3 to the top of the sleeve type cathode assembly 1 together with the cup 4 after the temporary attachment to the top of the Since the molded part is not deformed, and the springback of the molded thin wire 3 is extremely small, the dimensional accuracy of the molded thin wire 3 can be improved.

Further, according to this embodiment, the steps of obtaining the unformed thin wire 2 from the long thin wire, shaping it, and welding and attaching it to the top of the sleeve type cathode assembly 1 are substantially continuous. Since it is carried out by an automatic machine, it becomes extremely easy to carry out the steps by an automatic machine.

Furthermore, since the unformed thin wire 2 is initially in a state in which a long thin wire that has been washed is wound around a reel, it can be easily transported and stored.

[0028]

As described above, according to the present invention,
At the top of the sleeve-type cathode assembly 1, the unformed thin wire 2 is formed into a trapezoidal shape while being stretched to its plastic deformation region, and subsequently, the formed thin wire 3 is temporarily attached to the top of the sleeve-shaped cathode assembly 1. After the attachment, the temporarily attached and formed thin wire 3 is welded together with the cup 4 to the top of the sleeve-type cathode assembly 1.
Since the formed portion of the formed thin wire 3 is not deformed at the time of welding and the spring back of the formed thin wire 3 is extremely small, the dimensional accuracy of the formed thin wire 3 can be improved. effective.

Further, according to the present invention, the steps of obtaining the unformed thin wire 2 from the long thin wire, shaping it, and attaching it to the top of the sleeve type cathode assembly 1 are substantially continuous. However, there is an effect that it becomes extremely easy to execute the above steps by an automatic machine.

[Brief description of drawings]

FIG. 1 is a system diagram showing an embodiment of a method of attaching a fine wire to a fine wire supporting cathode according to the present invention.

FIG. 2 is an explanatory diagram of an operation in the case of forming an unformed thin wire to form a trapezoidal shaped thin wire in the embodiment of FIG.

FIG. 3 is a cross-sectional configuration diagram showing a state in which a formed thin wire is temporarily attached to the top of the sleeve-type cathode assembly in the embodiment of FIG.

FIG. 4 is a cross-sectional configuration diagram showing a state of the formed thin wire when the cup and the formed thin wire are simultaneously welded to the top of the sleeve type cathode assembly by the conventional method.

FIG. 5 is a cross-sectional configuration diagram showing a state in which a cup and a formed thin wire are simultaneously welded to the top of a sleeve-type cathode assembly by a conventional method.

[Explanation of symbols]

1 Sleeve type cathode structure 2 Unformed thin wire 3 Molded thin wire 4 Cup 5 Sleeve type cathode structure holding jig 6 Reel 7 Thin wire guide 8 Thin wire drawing jig (drawing chuck) 9 Thin wire holding jig (clamp chuck) 10 Thin wire temporary center O ₁ of the top of the attached electrode 11 cup welding electrodes O ₀ sleeve-type cathode structure 1, O ₂ sleeve type two pivot points away from the center O ₀ of the top distance l of the cathode structure 1 R 2 single pivot point O Radius of arc drawn by fine wire clamp chuck that turns around ₁ , O ₂ L ₁ Fine wire clamp chuck 9 from both turning points O ₁ , O ₂
Spatial distance from L ₂ Both turning points O ₁ and O ₂ to thin wire clamp chuck 9
The length of the thin line part up to

Claims (4)

[Claims] 1. A method for attaching a fine wire to a fine wire supporting cathode, comprising the step of attaching a fine wire to the fine wire supporting cathode through the following steps. (1). A step of transporting the unformed thin wire to the top of the sleeve-type cathode assembly by a thin wire holding jig, (2). The unformed thin wire is held while holding both ends of the unformed thin wire by the thin wire holding jig. A step of forming the unformed thin wire into a trapezoidal shape by rotating around the pivot point of the peripheral portion of the top while extending the plastic deformation region to the plastic deformation region, (3). A step of temporarily attaching the thin wire, (4). A step of conveying the cup to the top of the sleeve type cathode assembly, (5). A step of welding the cup together with the temporarily attached thin wire. 2. Between the step of (3) temporarily attaching the formed thin wire to the top of the sleeve type cathode assembly and the step of (4) conveying the cup to the top of the sleeve type cathode assembly, The method for mounting a thin wire on a thin wire supporting cathode according to claim 1, characterized in that the method goes through steps. (3-1). A step of rotating the sleeve-type cathode assembly about 90 degrees around the axis of the sleeve-type cathode assembly as an axis, (3-2). A step of transporting the thin wire, (3-3). While holding both end portions of the unformed thin wire by the thin wire holding jig, while extending the unformed thin wire to its plastic deformation region, a turning point around the top part And (3-4): temporarily attaching the formed thin wire to the top of the sleeve-type cathode assembly by rotating the thin wire into a trapezoidal shape by rotating the thin wire into a trapezoidal shape. 3. The step of temporarily attaching a formed thin wire to the top of the sleeve-type cathode assembly in (3) and (3-4) above is the upper electrode having a diameter larger than the diameter of the top of the sleeve-type cathode assembly. 3. The method according to claim 1 or 2, characterized in that
A method for attaching a fine wire to the described fine wire supporting cathode. 4. The unformed thin wire is wound around a reel in an initially long state.
A method for attaching a fine wire to the described fine wire supporting cathode.