JPH06103899A - Device for supplying lead wire of stem for electron tube - Google Patents

Abstract

PURPOSE:To surely supply the required number of lead wires to a stem without causing deformation and the like by housing a number of lead wires in a container, taking out the wires one by one using an exciting means, changing the direction of the wires using a direction changer, and inserting the wires into the holes of a transporting jig for conveying the wires. CONSTITUTION:A number of lead wires 2 are housed in a container 6, furnished with elliptical vibration by an exciting means 5, and taken out one by one into a tilting tube 7, in which the plurality of lead wires 2 are then positioned one by one and aligned continuously in their longitudinal direction. Next, the first one of the wires is put in a direction changer 8, turned in the vertical direction, and inserted into one vertical hole of a lead-wire transporting jig 9. The lead wires 2 are sequentially inserted into holes of the transporting jig 9 and then a lead-wire insertion inspection means 15 is used to ensure that the lead wires have been inserted into all of the holes. If the lead wire insertion is not completed, the operation for inserting the lead wires is carried out again and the transporting jig 9 is supplied to a stem manufacture machine using a conveyor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to install an electron tube stem, for example, a cathode ray tube button stem, by installing it in front of a stem manufacturing machine and surely supplying a required number of straight undeformed lead wires. The present invention relates to a lead wire feeder for a stem for an electron tube, which can be manufactured with a high yield.

[0002]

2. Description of the Related Art Conventionally, when supplying a lead wire of an electron tube stem to a button stem manufacturing machine, as shown in FIG.
An operator manually shakes the lead wire 2 housed in the cylindrical container 1 parallel to the cylindrical axis of the container 1 upside down to replenish the lead feeder (conventional lead wire supply device) manually. The slider 4 of this lead feeder is driven by one of the cams of a button stem manufacturing machine, and each time the slider 4 slides, a slit 3 is provided on the contact sliding surface of the slider 4 one lead wire 2 at a time. It is taken in and carried to a supply position in a position where it slides for a predetermined distance, where it is dropped downward by its own weight. A flexible tube (for example, a hollow tube formed by closely winding a wire in a spiral shape) is connected below this,
Each of the other ends is opened above one stem pin hole of the stem type of the button stem manufacturing machine, and the lead pin that has slid in the flexible tube by its own weight has the stem pin that forms the lower end of the lead pin. It is inserted into the hole and stops. The lead wires 2 have different diameters, as shown in FIG.
4 is a stem pin, and the thickest part at the left end of FIG. 4 is a stem pin. The stem pin is formed into a button stem, and after protruding from the tube, it is inserted into a socket and the electrode inside the electron tube is connected to the circuit outside the tube. Acts to connect to. The thinnest part of the lead wire 2 at the center of FIG. 4 is vacuum-tightly sealed in the glass with a Dumet wire. Also, FIG. 4 of the lead wire 2
The rightmost part is connected to the electrode in the tube.

[0003]

However, in the above-mentioned conventional apparatus and method, when the cylindrical container 1 is turned upside down to replenish the lead wires by hand, it is necessary to manually align the lead wires in the vertical direction. It may occur and the lead wire may be bent by touching it with the hand, and therefore, some may not fit in the slit 3 of the slider 4. In addition, in this device, the horizontal distance between the lead wire supply positions is quite large, but from there, the flexible pipe is used to guide the lead wire directly above the stem-shaped hole of the stem manufacturing machine and drop the lead wire under its own weight. Therefore, when the number of lead wires (7 to 12) of the stem is large, it is necessary to erect the flexible tube for a long time while bending the flexible tube in an oblique lateral direction. Therefore, the lead wire is stopped in the flexible tube. In some cases, it will not be inserted into the stem type stem pin hole. Moreover, even if the stem manufacturing machine is operated faster than the present (that is, the index is raised), the lead wire may be bent by the slider. Further, in this conventional device, the slider itself may be worn and deformed.

An object of the present invention is to provide a lead wire supplying device for a stem for an electron tube in which the above problems do not occur.

[0005]

In order to solve the above problems, according to the present invention, a large number of substantially straight lead wires of an electron tube stem are accommodated in parallel with each other, and only the lead wire can pass through the bottom portion. Install the container whose width in the direction perpendicular to the storage lead wire is gradually reduced near the bottom up to the width of the slit provided on the container so that the bottom slit contacts the lead wire intake part of the device. Giving an elliptical vibration in a vertical plane that is a combination of vertical and horizontal vibrations, and by the action of this vibration and gravity, the lead wires in the container are taken one by one through the slits at the bottom of the container. The lead wire provided in the section is dropped into an opening groove that can accommodate only one wire, and the lead wires are successively arranged one by one in the length direction in an inclined pipe having a slightly larger inner diameter than the outer diameter of the lead wire connected to this groove. , One lead wire that slides into a hole having a length exactly equal to the length of one lead wire of the direction changer connected to the end of the inclined tube is rotated by the direction changer, and the hole and its By making the directions of the lead wires inside both vertical, through the pipe end installed at a specific position of the generally vertical flexible pipe whose inner diameter is slightly larger than the lead wire diameter installed below the direction changer, In the lead wire carrying jig that is sequentially carried there, the holes are formed in the above-mentioned specific positions in the vertically drilled holes arranged in a plurality of rows by the number of lead wires required for one electron tube stem. Then, the lead wires were separated one by one in synchronization with the periodical direction change motion of the direction changer and inserted into the carrying jig. In addition, in order to supply the lead wire to the button stem manufacturing machine at high speed, in actuality, such a lead wire supply device for an electron tube stem is provided along the lead wire carrying jig conveying means with one electron tube stem. The same number of lead wires as required for each lead wire feeding device and the transportation jig transportation means are controlled by a computer so that they work properly together. After performing the lead wire supply operation to each, further inspecting whether or not the lead wire is actually inserted into each lead wire vertical hole of the lead wire carrying jig is optically remote without contact. By providing a means to inspect the lead wire carrying jig before sending it to the button stem manufacturing machine side,
When a carrying jig with an insufficient number of lead wires is detected, the carrying jig is not sent to the stem manufacturing machine side of the carrying jig by the instruction of the inspection means, and the lead jig is not inserted in the carrying jig. After performing the lead wire insertion operation again in the device itself, a means for sending the lead wire to the side of the stem manufacturing machine is provided, and a plurality of lead wire supply devices for the electron tube stem are set as a group to operate as a system.

[0006]

According to the above, when replenishing the lead wire supply device with a new lead wire, there is no need to touch it with a hand as in the conventional case, and there is a possibility that the lead wire may be greatly bent due to the touch. Disappear. Conventionally, the replenishment lead wire for the lead wire supply device is provided in the cylindrical container as described above, and the worker manually inverts and replenishes it. Since it becomes difficult to handle, for example, 1
Although only about 50 pieces could be inserted, in the apparatus of the present invention, it suffices to simply attach the container of the replenishment lead wire directly to the lead wire intake portion of the supply device, and therefore, there is no problem even if the lot size is made larger than before. For example, it becomes possible to replenish in units of about 800, and the burden on the operator is reduced. In addition, the lead wire carrying jig that should be supplied to the stem manufacturing machine is inspected for any lead wire insertion holes that do not actually have lead wires inserted. The carried jig is not sent to the stem manufacturing machine but returned to the lead wire supplying device so that the operation of inserting the lead wire into the hole where the lead wire is not inserted is performed again. Therefore, the stem manufacturing machine receives the lead wire carrying jig in which all the straight lead wires are securely inserted, and the yield of the stem manufacturing process is significantly improved. At the same time, it is possible to raise the index, which greatly improves the throughput of the stem manufacturing process.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a sectional view showing the structure of an essential part of a first embodiment of the present invention, in which lead wires are separated from a container and taken out. A much larger number of lead wires 2 are housed in a container (hereinafter referred to as a stocker) 6 than in the conventional case. An elliptical vibration in a vertical plane is given by the vibrating means 5 to the stocker 6 and the lead wire intake portion of the device of the present invention mounted in contact with the bottom of the stocker 6 and the inclined pipe 7 connected to the lead wire intake portion. Due to the action of this vibration and the gravity of the earth, the lead wires in the stocker 6 are provided one by one through the slits through which only one lead wire at the bottom of the stocker can pass, and are provided in the device side lead wire intake portion which is in contact with the stocker. The lead wire is dropped into an opening groove that can accommodate only one lead wire. A stocker 6 of which the front view is shown in FIG. 3 can be easily attached to the lead wire supplying device by so-called one-touch operation, for example, the stocker 6
Supports (not shown) that engage with the four corners of the device are installed in the device-side lead wire intake portion. The device-side lead wire intake portion and the inclined tube 7 connected to the tip thereof are inclined, for example, 10 to 15 degrees with respect to the horizontal, and the lead wire in this is obstructed (that is, other lead wires located in front of itself). If there is no lead wire or a direction changer 8) described later, it surely moves by its own weight. The inner diameter of the inclined tube 7 is 1.2 mmφ, which is slightly larger than the maximum outer diameter of the lead wire 2. Therefore, in the inclined tube 7, a plurality of lead wires 2 are successively arranged one by one in the longitudinal direction. The direction changer 8 provided in contact with the end of the inclined tube 7 has a rotating shaft shape, and its diameter is equal to the length of one lead wire, and 1.3 mm is passed through the center of the shaft.
There is a φ hole. When the direction changer 7 rotates and the direction of the hole faces the same direction as that of the inclined tube 7, among the plurality of lead wires 2 sequentially arranged in the inclined tube 7 in the longitudinal direction, The leading one, which was previously prevented from moving on the non-perforated surface of the deflector 8, slips into the deflector hole. However, the length of the hole of the direction changer is exactly the same as that of the lead wire 1.
Since there is only a length corresponding to the length of the lead wire and the diameter of the hole is such that the lead wire can barely pass through, only the leading one of the plurality of lead wires arranged in the inclined tube 7 is taken into the direction changer 8. . However, the device-side lead wire intake portion that is in contact with the bottom of the stocker 6 has a margin for the length of one lead wire, that is, a gap. Since the stocker 6 and the part in contact with it are vibrating by the vibrating means 5 so as to draw an ellipse in the vertical plane, only one lead wire 2 immediately drops from the stocker 6 into the above gap and the above gap is generated. To replenish. Then, when the deflector 8 starts to rotate, the lower end of the tilt tube 7 is blocked by the hole-free surface of the deflector, and the lead wire in the tilt tube is prevented from moving by its own weight. On the other hand, when the direction changer 8 is rotated and the hole is just oriented in the vertical direction, the lead wire carrying jig 9 carried by the carrying means is located below the hole.
The computer controls the operation of the entire system composed of a plurality of lead wire feeders so that one specific hole (hereinafter referred to as a platen) is present, so that the direction changer 8 One of the lead wires contained in the hole falls down by its own weight and is inserted into the vertical hole of the platen 9. In this way, the lead wires are separated one by one and inserted into the platen in synchronism with the periodic turning motion of the turning device 8. Actually, only a part of the length of the lead wire 2 is inserted into the vertical hole of the platen 9, and the lead wire protrudes considerably longer from the platen 9. The platen 9 is provided with holes for inserting lead wires arranged in a plurality of rows, actually two rows. In this case, a commercially available collective light projecting means and reflection from each lead wire by the means are provided. An off-the-shelf commercially available optical sensor combined with a device for detecting each light can inspect whether or not the lead wires are surely inserted into all the holes of the platen 9. If the lead wires are inserted into the holes arranged on the circumference of the stem type of the button stem manufacturing machine as in the conventional case, the lead wire insertion state cannot be inspected by the commercially available optical sensor. The availability of off-the-shelf optical sensors is extremely effective for cost reduction. As shown in FIG. 1A, the platen conveying means is actually a narrow belt 10 divided into two that is continuously driven at a constant speed by a group of rollers arranged on both sides of the conveying path. The platen is placed on top of and moves. Then, supplying lead wires to the platen,
When the platen comes to a predetermined position such as inspecting the number of lead wires, a positioning pin indicated by 11 in the drawing rises from below, and the end portion of the pin 11 engages with the positioning hole of the platen 9 to move the platen 9 into position. Push up to separate platen from belt surface and lock in place. The vertical movement of the pin 11 at each predetermined position is also controlled by the computer.

All the platen 9 are installed by installing the above-mentioned lead wire supply devices in the number equal to the number of lead wires (7 to 12) required for one electron tube stem along the conveying means of the platen 9. A system for inserting lead wires into the vertical holes, that is, a lead wire supply device for supplying all the lead wires is configured. FIG. 1 (b) is a top view showing this system. The lead wire insertion state inspection means 15 including the above-described optical sensor is provided at a position where the lead wire insertion operation is completed for all the holes of the platen 9. When an NG platen with an insufficient number of lead wires is detected, the NG ejector driven by the air cylinder operates to push out the NG platen from the conveyor that supplies the platen to the stem (manufacturing) machine, and the NG platen is further aired. The pusher driven by the cylinder is placed on the return conveyor and returned to the lead wire re-supply position. In this lead wire supplying device, a flexible tube capable of setting the position of the lower end of the tube is attached directly above an arbitrary hole position of the platen, and the inspection means 15 is provided.
The lead wire insertion operation is performed again for the specific hole in which it is detected that the lead wire has not been inserted.
The platen that has completed the re-insertion of the lead wire is returned to the starting point of the transfer conveyor by the return conveyor. However, since all the lead wires have already been inserted into this platen, the lead wire supply device arranged along the conveyor does not perform the lead wire supply operation to this platen.
The operation control of the series of systems after the NG platen is detected is performed by the control computer based on the signal sent when the inspection means 15 detects the shortage of the lead wires.

FIG. 2 shows the entire lead wire supplying device in which the above-mentioned lead wire supplying devices for inserting the lead wires into all the holes of the platen are put together into a system in which a plurality of units appropriately cooperate with each other. It is a perspective view. In the figure, 2 is a lead wire, 5 is a vibrating means, 6 is a stocker, 9 is a platen, 10
Is a belt, 12 is an up-and-down mechanism part of the stem manufacturing machine, 13 is an up-and-down conveyance mechanism, and 14 is a return conveyor.

[0010]

As described above, according to the present invention, it is possible to reliably supply the required number of straight undeformed lead wires to the stem manufacturing machine, which is very favorable, for example, 99% or more. The electron tube stem can be manufactured with the above yield.

[Brief description of drawings]

FIG. 1 (a) is a cross-sectional view showing the structure of a main part of a lead wire according to an embodiment of the present invention, in which lead wires are separated from a container and taken out one by one. FIG. It is a top view which shows the system which installs the lead wire supply device of the same number as the number of lead wires required for one stem for electron tubes, and inserts a lead wire into all the holes of a platen.

FIG. 2 is a perspective view showing the whole of the lead wire feeding device in which a plurality of lead wire feeding devices are combined into a system in which a plurality of the lead wire feeding devices are appropriately linked to each other for inserting the lead wires into all the holes of the platen. .

FIG. 3 is a front view of a stocker.

FIG. 4 is a diagram showing a lead wire.

FIG. 5 is a perspective view showing a main part of a conventional lead wire supply device for an electron tube stem.

[Explanation of symbols]

2 ... lead wire, 5 ... vibration means, 6 ... stocker, 7
... Inclined tube, 8 ... Direction changer, 9 ... Platen, 10
... Belt, 11 ... Positioning pin, 13 ... Vertical transport mechanism, 14 ... Return conveyor, 15 ... Inspection means.

Claims (2)

[Claims] 1. A number of substantially straight lead wires of a stem for an electron tube are accommodated in parallel with each other, and a width of a slit provided at the bottom portion through which only one lead wire can pass is measured in a direction perpendicular to the accommodated lead wires. A container whose width is gradually reduced near the bottom is attached so that the bottom slit is in contact with the lead wire intake part of the device, and elliptical vibration in a vertical plane that combines vertical and horizontal vibrations on the container and its attachment part. Due to the action of this vibration and gravity, the lead wires in the container are dropped one by one through the slits at the bottom of the container into the open groove that can accommodate only one lead wire provided in the lead wire intake part on the device side. The lead wires of the direction changer connected to the end of the inclined tube are arranged one by one in the length direction in the inclined tube having an inner diameter slightly larger than the outer diameter of the lead wire connected to the groove. The length of one line It was slid into just equal length of holes in 1
By turning the direction changer to make the lead wire of this book both the hole and the lead wire in it vertical,
Of the lead wire carrying jig that is sequentially transported to the flexible tube, which has a slightly larger inner diameter than the diameter of the lead wire installed below the direction changer, and which is installed at a specific position of the flexible tube.
One electron tube stem is arranged in a plurality of rows corresponding to the number of lead wires and dropped into one hole that is opened at the above-mentioned specific position among the vertically drilled holes, and the direction changer is periodically moved. A lead wire supply device for a stem for an electron tube, characterized in that the lead wires are separated one by one in synchronization with the direction changing motion and inserted into a carrying jig. 2. A lead wire supply device for an electron tube stem according to claim 1, wherein the same number of lead wires as required for one electron tube stem are arranged along the lead wire carrying jig conveying means. After the lead wire supply device and the carrying jig carrying means are linked by computer control to execute the lead wire supplying operation to each of the lead wire vertical holes of each lead wire carrying jig, the lead wire carrying jig is further repaired. A means for optically inspecting whether or not the lead wire is actually inserted is provided in each of the lead wire vertical holes of the tool, and the lead wire carrying jig is inspected before being sent to the button stem manufacturing machine side, When a carrying jig with an insufficient number of lead wires is detected, the carrying jig is not sent to the side stem manufacturing machine side by a command from the inspection means,
A lead wire supply device for a stem for an electron tube, which is provided with a means for re-inserting the lead wire in the lead wire non-insertion hole of the carrying jig within the device itself and then sending it to the stem manufacturing machine side.