JP2690920B2 - Color picture tube manufacturing equipment. - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for transferring a transfer product through a transfer pipe, and more particularly to a transfer control device suitable for controlling the transfer speed of the transfer product. [Prior Art] In recent years, as automation of production of electronic parts, other precision parts, and the like has progressed, a means for transferring a transfer object through a transfer pipe has been used as a physical distribution means for these parts or their members. For example, in manufacturing an indirectly heated cathode heater used for a color picture tube, there is a step of automatically inserting the heater into the cathode sleeve, and the operation of dropping the heater into the cathode sleeve by its own weight from above using a transfer tube is required. Has been done. [Problems to be Solved by the Invention] A particular problem in the conventional method of transferring a transfer object using a transfer tube is to transfer the transfer object from the transfer tube from top to bottom as in the above example. It is a drop impact that occurs when you drop it using its own weight. In the above example, the heater used for the indirectly heated cathode for a color picture tube uses a thin tungsten core wire wound in a coil shape and covered with a fragile alumina insulating layer. If it is dropped into the cathode sleeve from above by its own weight, there is a problem that the insulating layer is damaged. In addition to the above cases, the inconvenience of damaging the transferred product also occurs when the semiconductor wafer is transferred, fine optical parts, and other small and light parts are transferred. It has been required to realize a means for stopping or decelerating before receiving a shock. SUMMARY OF THE INVENTION An object of the present invention is to provide a transfer control device that controls the transfer speed of a transfer object and does not damage the transfer product in view of the conventional problems associated with transfer by a transfer tube. [Means for Solving the Problems] The above-described object is to form a gas flow shutter by blocking a transfer direction of the transfer pipe and injecting a gas flow in a device for transferring a transfer object through a transfer pipe. This is accomplished by controlling the transfer rate of the transfer. [Operation] According to the present invention, the gas flow shutter, which is formed by blocking the transfer direction of the transfer tube, prevents the transfer of the transfer object and suppresses the transfer speed here. This prevents the transported material from being damaged by impact or the like. Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First
In the figure, reference numerals 1 and 2 denote a transfer material 3, for example, a connecting portion for connecting a transfer tube 4 for transferring a cathode heater for an electron tube, 5 a casing of a control device, and 6 a gas into which a pressurized gas is introduced from a gas source (not shown). An introduction part 7 is a shutter part that injects the introduced pressurized gas and blocks the transfer direction 8 of the transfer object 3 to form a gas flow shutter 9. The shutter part 7 is provided facing the nozzle 10 and the nozzle 10. And the outflow hole 11. Reference numeral 12 is a flow control valve for the pressurized gas. The pressurized gas is introduced into the introduction part 6 and the nozzle 10 of the shutter part 7 is constituted by the transfer control device of the present invention configured as described above.
The gas that has been ejected from is ejected from the outflow hole 11. At this time, the gas flow shutter 9 is formed between the nozzle 10 and the outflow hole 11 so as to block the transfer direction 8. The strength of the gas flow shutter 9 can be controlled by adjusting the flow rate control valve 12, and the movement of the transfer material 3 can be appropriately stopped or decelerated as necessary. The nozzle 10 may have any cross-sectional shape, but a square shape, a rectangular shape, or a slit shape is preferable. With such a shape, the gas flow shutter 9 is sharply formed and effectively acts on the transfer material 3. Further, a plurality of the nozzles 10 may be provided depending on the size, weight, moving speed of the transfer material 3, the pipe diameter of the transfer pipe 4, and the like. Further, the outflow hole 11 has a hole area larger than that of the nozzle 10. The first illustrated outflow hole 11 is a nozzle
Two pieces with the same shape as 10 are provided to make the total hole area large. By doing so, a part of the kinetic energy of the gas flow shutter 9 ejected from the nozzle 10 is converted into static pressure, which increases the static pressure in the transfer direction 8 of the gas flow shutter 9. The entry of the transfer material 3 can be suppressed. Air is usually used as the gas forming the gas flow shutter 9, but other gas, for example, an inert gas such as nitrogen gas or other gas may be used depending on the transported material. [Effects of the Invention] According to the present invention described above, since the transfer speed of the transferred object can be controlled without contact, it is particularly effective in the transfer control of the transferred object which is averse to contamination. In addition, there is an effect that the moving speed of the transported object is controlled, the shock of the movement is avoided, and the damage is prevented. Further, since the device has a relatively simple structure, it can be mounted at low cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of a main part of a transfer control device for transferred substances in a pipe according to an embodiment of the present invention. 1,2 ...... Connection part, 5 ...... Case, 6 ...... Gas introduction part, 7 ...
… Shutter part, 9 …… Gas flow shutter, 10 …… Nozzle,
11 ... Outflow hole.

   ────────────────────────────────────────────────── ─── Continuation of front page    (56) References Japanese Patent Laid-Open No. 61-7136 (JP, A)                 Japanese Patent Publication Sho 53-11813 (JP, B2)                 58-51140 (JP, Y2)

Claims (1)

(57) [Claims] In an apparatus for manufacturing a color picture tube in which an indirectly heated cathode heater for a color picture tube is transferred through a transfer tube, the cathode heater drops in the transfer tube by its own weight, interrupts the transfer direction of the transfer tube, and jets a gas flow. A gas flow shutter is formed, and the gas flow shutter is formed between a nozzle for injecting a gas flow and a plurality of outflow holes having a cross section with a total area larger than the cross section of the nozzle. An apparatus for manufacturing a color picture tube, characterized in that it is formed in a position facing the nozzle in the tube, thereby controlling the transfer speed of the indirectly heated cathode heater for the color picture tube.