Glass electronic tube core column and glass bulb sealing device and sealing method thereof

Abstract

The invention relates to a glass electronic tube core column and glass bulb sealing device and a sealing method thereof, the device comprises a hollow stand column and a shaft sleeve which are arranged on a rack, a transmission shaft is arranged in the hollow stand column, a hollow support is arranged at the upper end of the hollow stand column, an upper vertical shaft is arranged in the hollow support, and an air cylinder is arranged at the upper end of the hollow support; the output end is coaxially connected with the upper end of the upper vertical shaft; a power source is arranged in the rack, and the output end of the power source is coaxially connected with the lower end of the transmission shaft; a drill chuck is arranged at the lower end of the upper vertical shaft; a lower vertical shaft is arranged in the shaft sleeve; the power source output end is in transmission connection with the shaft sleeve; a swing arm is hinged in the rack, one end of the swing arm is clamped with a self-aligning ball bearing arranged at the lower end of the lower vertical shaft, and the other end of the swing arm is connected with a left pedal; a supporting seat is sleeved on the supporting sleeve at the upper end of the lower vertical shaft; a first support arm and a second support arm are hinged on the rack, and flame nozzles are respectively arranged at the upper ends of the first support arm and the second support arm. The device can improve the yield, ensure the sealing quality and reduce the production cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to a kind of glass electronic tube processing device, in particular to a kind of glass electronic tube stem and glass envelope sealing device. BACKGROUND

[0002] It is known that glass electronic tube mainly includes anode, cathode, grid, stem and glass envelope, wherein the stem and glass envelope sealing mainly uses flame as heat source, adjusts the shape of flame by hand-held fire head and moves to sealing position, melts the glass of stem and glass envelope sealing position, realizes sealing.

[0003] Although this hand-held fire head sealing method is simple to operate, it is easy to cause uneven temperature at sealing position, produce thermal stress, affect sealing quality, and further reduce yield, increase production cost; at the same time, there is a safety risk of accidental touch of operator, and the operator is required to be higher. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a kind of glass electronic tube stem and glass envelope sealing device and sealing method, which can improve yield and reduce production cost.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: A kind of glass electronic tube stem and glass envelope sealing device, including rack, hollow column and rotatable shaft sleeve are provided on the rack, transmission shaft is rotatably installed in the hollow column, hollow support is fixed on the upper end of the hollow column, upper vertical shaft is rotatably installed in the hollow support, air cylinder is installed on the upper end of the hollow support, the output end of the air cylinder is coaxially connected with the upper end of the upper vertical shaft, for driving the upper vertical shaft to lift, the upper end of the transmission shaft is in transmission connection with the upper vertical shaft, power source is provided in the rack, the output end of the power source is coaxially connected with the lower end of the transmission shaft, for driving the transmission shaft to rotate, so as to drive the upper vertical shaft to rotate, drill chuck is provided on the lower end of the upper vertical shaft, for clamping the glass envelope to be sealed; Lower vertical shaft is connected with the shaft sleeve through spline, the output end of the power source is in transmission connection with the shaft sleeve, for driving the lower vertical shaft to rotate, swing arm is hinged in the rack through support, one end of the swing arm is forked and clamped with the aligning ball bearing installed on the lower end of the lower vertical shaft through bolt, the other end of the swing arm is connected with the left pedal hinged on the lower end of the rack through first pull rod, for controlling the swing arm to swing and driving the lower vertical shaft to lift, support sleeve is fixed on the upper end of the lower vertical shaft, support seat is sleeved and connected on the support sleeve, the support seat can eccentrically swing on the support sleeve, for installing the stem to be sealed and adjusting the coaxiality with the glass envelope; Two first arms and two second arms are symmetrically hinged on the rack, spray nozzle is provided on the upper end of the first arm and the second arm, for connecting combustible gas pipe and oxygen pipe to spray and heat.

[0006] As a further optimization, the first arm is L-shaped and the lower end is hinged to a short shaft fixed to the top surface of the frame, so as to adjust the position of the flame nozzle on the first arm.

[0007] As a further optimization, the second arm is L-shaped and the lower end is hinged to the upper end of an L-shaped strut, the lower end of the L-shaped strut is sleeved on a long shaft penetrating through the top surface of the frame, the lower ends of the two long shafts are connected to each other by a connecting rod, a right pedal is hinged to the lower end of the frame, and the middle part of the connecting rod is connected to the middle part of the right pedal by a pull rod assembly, so as to adjust the position and height of the flame nozzle on the second arm.

[0008] As a further optimization, the pull rod assembly includes a transmission arm hinged to the middle part of the frame, one end of the transmission arm is hinged to a connecting plate and connected to the middle part of the connecting rod through the connecting plate, and the other end of the transmission arm is hinged to a second pull rod and connected to the right pedal through the second pull rod.

[0009] As a further optimization, the left pedal and the right pedal are elastically connected to a cross beam arranged in the middle part of the frame by a third pull rod and a tension spring respectively, so as to realize automatic reset of the left pedal and the right pedal.

[0010] As a further optimization, the upper end of the transmission shaft is drivingly connected to the upper vertical shaft through a first gear pair.

[0011] As a further optimization, the output end of the power source is drivingly connected to the shaft sleeve through a second gear pair.

[0012] As a further optimization, three connecting bolts are uniformly distributed on the circumference of the upper end of the support sleeve, three through holes are uniformly distributed on the circumference of the support seat, the through holes are much larger than the outer diameter of the connecting bolts, and the connecting bolts pass through the corresponding through holes respectively, so that the support seat can swing eccentrically on the support sleeve, thereby automatically adjusting the coaxiality of the stem and the glass shell.

[0013] As a further optimization, a bearing sleeve is threadedly connected to the output end of the air cylinder, the upper end of the upper vertical shaft is installed in the bearing sleeve through a bearing and limited by a circlip, so that the output end of the air cylinder is stationary when the upper vertical shaft rotates.

[0014] A glass electronic tube stem and glass shell sealing method based on the above-mentioned glass electronic tube stem and glass shell sealing device, comprising the following operation steps: (1) Preheat the stem and glass shell to be sealed in a constant temperature furnace, clamp the preheated glass shell on the drill chuck, open the switches of the combustible gas pipe and oxygen pipe connected to the flame nozzle, ignite the gas outlet of the flame nozzle, push the first arm and the second arm close to the support seat, step on the left pedal to heat the support seat that will contact the stem, close the oxygen pipe switch, then push away the first and second arms, and insert the stem to be sealed into the central hole at the upper end of the support seat; (2) Start the power source to drive the lower vertical shaft and the upper vertical shaft to rotate at the same speed, thereby driving the core column and the glass shell to rotate; (3) Extend the control cylinder to move the upper vertical shaft and glass shell down, and move the glass shell down to a position close to the core column; then step on the left pedal and move the lower vertical shaft up through the swing arm, thereby moving the support seat and core column up to achieve the insertion of the core column and glass shell; when inserting, use an iron rod to tap the support seat to adjust the coaxiality of the core column and glass shell; (4) After the core column and the glass shell are inserted, push the first and second arms close to the core column, turn on the oxygen tube switch, adjust the flame intensity, and continue to heat the glass shell. After heating, the insertion part of the core column and the glass shell begins to fuse together, thus achieving the core column sealing of the electron tube. (5) Close the combustible gas pipe and oxygen pipe switch connected to the nozzle, release the right pedal, and move the nozzle to both sides; then press the left pedal repeatedly to adjust the relative position of the core column and the glass shell; after adjusting the position, keep the left pedal pressed down, and after cooling, release the left pedal and the drill bit, and you can remove the sealed electron tube.

[0015] The beneficial effects of this invention are as follows: 1. A support sleeve is fixed to the upper end of the lower vertical shaft, and a support base is fitted and connected to the support sleeve. The support base can swing eccentrically on the support sleeve. The core column to be sealed can be installed through the support base, and its coaxiality with the glass shell can be adjusted. The lower vertical shaft installed in the bushing can be rotated through the power source output end connected to the bushing, thereby driving the core column to be sealed to rotate.

[0016] 2. One end of the swing arm, which is hinged in the frame, is engaged with the lower end of the lower vertical shaft via a self-aligning ball bearing. The other end of the swing arm is connected to the left pedal, which is hinged to the lower end of the frame, via the first pull rod. Therefore, the swing arm can be controlled to swing by the left pedal, thereby driving the lower vertical shaft to lift and lower the core column to be sealed, and thus achieving the insertion of the glass shell on the drill chuck at the lower end of the upper vertical shaft.

[0017] 3. By symmetrically hinged first and second arms on the frame, and with flame nozzles at the upper ends of the first and second arms respectively, combustible gas pipes and oxygen pipes can be connected to externally to heat the rotating core column and glass shell with flames. This can make the sealing joint heated evenly, reduce the generation of thermal stress, improve the yield, ensure the sealing quality, and reduce production costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 yes Figure 1 Rear view.

[0020] Figure 3 yes Figure 1AA sectional view.

[0021] Figure 4 This is the three-dimensional structure of the present invention. Figure I .

[0022] Figure 5 This is the three-dimensional structure of the present invention. Figure II .

[0023] Figure 6 yes Figure 3 Enlarged view of part I.

[0024] Figure 7 yes Figure 3 Enlarged view of part J.

[0025] In the diagram: Frame 1, Platform 101, Support 2, Self-aligning ball bearing 3, Lower vertical shaft 4, Bushing 5, Shaft seat 6, Support sleeve 7, Connecting bolt 8, Support seat 9, Drill chuck 10, Upper vertical shaft 11, Spline sleeve 12, Hollow support 13, First gear pair 14, Bearing sleeve 15, Cylinder 16, Hollow column 17, Drive shaft 18, Second gear pair 19, Power source 20, Swing arm 21, First pull rod 22, Hinge seat 23, Left pedal 24, Third pull rod 25, Tension spring 26, Connecting rod 27, Right pedal 28, Connecting plate 29, Second pull rod 30, Drive arm 31, L-shaped support rod 32, Second support arm 33, Flame nozzle 34, First support arm 35, Long shaft 36, Short shaft 37. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1-7 As shown, the present invention relates to a glass electron tube die column and glass shell sealing device, including a frame 1, a hollow column 17 fixed on a platform 101 at the upper end of the frame 1 and a rotatable bushing 5 installed thereon, the hollow column 17 being fixed on the platform 101 by bolts, and the bushing 5 passing through a bearing seat 6 installed on the platform 101 via a radial bearing and a thrust bearing.

[0028] A rotatable drive shaft 18 is installed inside the hollow column 17 via bearings. A hollow support 13 is fixed at the upper end of the hollow column 17. A vertically arranged upper shaft 11 is rotatably installed in the mounting hole at the front end of the hollow support 13. A cylinder 16 is fixedly installed at the upper end of the hollow support 13. The output end of the cylinder 16 is coaxially connected to the upper end of the upper shaft 11 for driving the upper shaft 11 to rise and fall. The upper end of the drive shaft 18 is connected to the upper shaft 11 for transmission. A power source 20 is fixed at the upper part of the frame 1. The output end of the power source 20 is coaxially connected to the lower end of the drive shaft 18 for driving the drive shaft 18 to rotate, thereby driving the upper shaft 11 to rotate. A drill chuck 10 is installed at the lower end of the upper shaft 11 for clamping the glass shell to be sealed.

[0029] The power source 20 is preferably a geared motor. The upper end of the transmission shaft 18 is connected to the upper vertical shaft 11 via a first gear pair 14. The driven gear of the first gear pair 14 is mounted on the upper vertical shaft 11 via a spline sleeve 12. The spline sleeve 12 is sleeved on the upper vertical shaft 11 and connected to the upper vertical shaft 11 via a spline, allowing the upper vertical shaft 11 to slide axially within the spline sleeve 12. The spline sleeve 12 is mounted in the mounting hole at the front end of the hollow support 13 via a bearing.

[0030] A bearing sleeve 15 is threadedly connected to the output end of the cylinder 16. The upper end of the upper shaft 11 is installed in the bearing sleeve 15 through a bearing and is limited by a snap ring so that the output end of the cylinder 16 remains stationary when the upper shaft 11 rotates.

[0031] A lower vertical shaft 4 is splined inside the bushing 5. The lower vertical shaft 4 is coaxially arranged with the upper vertical shaft 11. The output end of the power source 20 is connected to the bushing 5 via a second gear pair 19, which drives the lower vertical shaft 4 and the upper vertical shaft 11 to rotate at the same speed. The driven wheel of the second gear pair 19 is keyed and mounted on the bushing 5 and is limited by a nut.

[0032] A bracket 2 is fixed on the upper crossbeam inside the frame 1. A swing arm 21 is hinged to the bracket 2 by a pin. One end of the swing arm 21 is forked and is bolted to the self-aligning ball bearing 3 installed at the lower end of the lower vertical shaft 4. The other end of the swing arm 21 is connected to the left pedal 24 hinged to the lower end of the frame 1 by a Z-shaped first pull rod 22. One end of the left pedal 24 is sleeve-shaped and is hinged to the hinge seat 23 at the lower end of the frame 1 by a pin. It is used to control the swing arm 21 to swing, thereby driving the lower vertical shaft 4 to rise and fall.

[0033] A support sleeve 7 is fixed to the upper end of the lower vertical shaft 4 by a threaded connection. A support base 9 is sleeved on and connected to the support sleeve 7. The support base 9 can swing eccentrically on the support sleeve 7 to install the core column to be sealed and adjust its coaxiality with the glass shell.

[0034] Three connecting bolts 8 are evenly distributed along the circumference on the flange at the upper end of the support sleeve 7. Three through holes are evenly distributed around the circumference of the support base 9. The through holes are much larger than the outer diameter of the connecting bolts 8. The connecting bolts 8 are limited by nuts after passing through the corresponding through holes, so that the support base 9 can swing eccentrically on the support sleeve 7, thereby automatically adjusting the coaxiality of the core column and the glass shell.

[0035] Two first arms 35 and two second arms 33 are symmetrically hinged on the frame 1. Flame nozzles 34 are respectively sleeved on the upper ends of the first arms 35 and the second arms 33 and fixed by set screws for connecting external combustible gas pipes and oxygen pipes for flame heating.

[0036] The first support arm 35 is L-shaped and its lower end is hinged to a short shaft 37 fixed to the top surface of the frame 1 to facilitate adjustment of the position of the nozzle 34 on the first support arm 35. The second support arm 33 is L-shaped and its lower end is hinged to the upper end of an L-shaped support rod 32. The lower ends of the L-shaped support rod 32 are respectively sleeved on a long shaft 36 that passes through the top surface of the frame 1. The lower ends of the two long shafts 36 are connected to each other by a horizontally arranged connecting rod 27. A right pedal 28 is hinged to a hinge seat 23 at the lower end of the frame 1. The middle part of the connecting rod 27 is connected to the middle part of the right pedal 28 through a pull rod assembly to adjust the position and height of the nozzle 34 on the second support arm 33.

[0037] The pull rod assembly includes a transmission arm 31 hinged to the middle of the frame 1 via a horizontal shaft fixed to the frame 1. One end of the transmission arm 31 is hinged to a connecting plate 29 and connected to the middle of the connecting rod 27 via the connecting plate 29. The other end of the transmission arm 31 is hinged to a second pull rod 30 and connected to the middle of the right pedal 28 via the second pull rod 30.

[0038] The left pedal 24 and the right pedal 28 are elastically connected to the crossbeam located in the middle of the frame 1 via the third pull rod 25 and the tension spring 26, respectively, to realize the automatic reset of the left pedal 24 and the right pedal 28 after they are pressed.

[0039] The present invention relates to a sealing method for a glass electron tube die column and a glass shell sealing device, comprising the following steps: 1. Place the core column and glass shell to be sealed in a constant temperature furnace for preheating. Install the preheated glass shell on the drill chuck 10. Open the combustible gas pipe and oxygen pipe switch connected to the burner nozzle 34, ignite the gas outlet of the burner nozzle 34, push the first arm 35 and the second arm 33 close to the support base 9, step on the left pedal 24 to heat the support base 9 that will contact the core column, close the oxygen pipe switch, and then push open the first and second arms to insert the core column to be sealed into the center hole at the upper end of the support base 9.

[0040] 2. Start the geared motor to drive the lower vertical shaft 4 and the upper vertical shaft 11 to rotate at the same speed, thereby driving the core column and glass shell to rotate.

[0041] 3. Extend the control cylinder 16, causing the upper vertical shaft 11 and the glass shell to move downwards, bringing the glass shell closer to the core column. Then, press the left pedal 24, which, through the swing arm 21, causes the lower vertical shaft 4 to move upwards, thereby causing the support base 9 and the core column to move upwards, achieving the insertion of the core column and the glass shell. During insertion, use an iron rod to tap the support base 9. Since the support base 9 can swing eccentrically on the support sleeve 7, the coaxiality of the core column and the glass shell can be adjusted.

[0042] 4. After the core column and glass shell are inserted, push the first arm 35 and the second arm 33 to bring the nozzle 34 close to the core column, turn on the oxygen tube switch, adjust the flame intensity, and continue to heat the glass shell. After heating, the insertion part of the core column and the glass shell begins to fuse together, realizing the core column sealing of the electron tube.

[0043] 5. Finally, turn off the combustible gas pipe and oxygen pipe switch connected to the burner nozzle 34, release the right pedal 28, and move the burner nozzle 34 to both sides; then press the left pedal 24 repeatedly to adjust the relative position of the core column and the glass shell; after adjusting the position, keep the left pedal 24 pressed down, and after cooling, release the left pedal 24 and the drill chuck 10, and the sealed electron tube can be removed.

[0044] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A sealing device for a glass electron tube die column and a glass shell, comprising a frame, characterized in that: The frame is equipped with a hollow column and a rotatable bushing. A drive shaft is rotatably mounted inside the hollow column. A hollow support is fixed to the upper end of the hollow column, and an upper vertical shaft is rotatably mounted inside the hollow support. A cylinder is mounted on the upper end of the hollow support, and the output end of the cylinder is coaxially connected to the upper end of the upper vertical shaft for driving the upper vertical shaft to move up and down. The upper end of the drive shaft is drively connected to the upper vertical shaft. A power source is provided inside the frame, and the output end of the power source is coaxially connected to the lower end of the drive shaft for driving the drive shaft to rotate, thereby driving the upper vertical shaft to rotate. A drill chuck is provided at the lower end of the upper vertical shaft for clamping the glass shell to be sealed. A lower vertical shaft is connected to the bushing via a spline. The output end of the power source is connected to the bushing via a transmission to drive the rotation of the lower vertical shaft. A swing arm is hinged to the frame via a bracket. One end of the swing arm is fork-shaped and is bolted to a self-aligning ball bearing installed at the lower end of the lower vertical shaft. The other end of the swing arm is connected to a left pedal hinged to the lower end of the frame via a first pull rod to control the swing arm to drive the lower vertical shaft to rise and fall. A support sleeve is fixed to the upper end of the lower vertical shaft. A support seat is fitted onto the support sleeve and connected to it. The support seat can swing eccentrically on the support sleeve to install the core column to be sealed and adjust its coaxiality with the glass shell. Two first arms and two second arms are symmetrically hinged on the frame. Flame nozzles are provided at the upper ends of the first and second arms, respectively, for connecting external combustible gas pipes and oxygen pipes for flame heating.

2. The glass electron tube die and glass shell sealing device according to claim 1, characterized in that: The first arm is L-shaped and its lower end is hinged to a short shaft fixed to the top surface of the frame to facilitate adjustment of the position of the flame nozzle on the first arm.

3. The glass electron tube die and glass shell sealing device according to claim 2, characterized in that: The second arm is L-shaped and its lower end is hinged to the upper end of an L-shaped support rod. The lower end of the L-shaped support rod is sleeved on a long shaft that runs through the top surface of the frame. The lower ends of the two long shafts are connected to each other by a connecting rod. A right pedal is hinged to the lower end of the frame. The middle part of the connecting rod is connected to the middle part of the right pedal through a pull rod assembly so as to adjust the position and height of the flame nozzle on the second arm.

4. The glass electron tube die and glass shell sealing device according to claim 3, characterized in that: The pull rod assembly includes a transmission arm hinged to the middle of the frame. One end of the transmission arm is hinged to a connecting plate and connected to the middle of the connecting rod through the connecting plate. The other end of the transmission arm is hinged to a second pull rod and connected to the right pedal through the second pull rod.

5. The glass electron tube die and glass shell sealing device according to claim 3, characterized in that: The left and right pedals are elastically connected to the crossbeam located in the middle of the frame via a third pull rod and a tension spring, respectively, to achieve automatic reset of the left and right pedals.

6. The glass electron tube die and glass shell sealing device according to claim 1, characterized in that: The upper end of the drive shaft is connected to the upper vertical shaft via a first gear pair.

7. The glass electron tube die and glass shell sealing device according to claim 1, characterized in that: The power source output end is connected to the bushing via a second gear pair.

8. The glass electron tube die and glass shell sealing device according to claim 1, characterized in that: Three connecting bolts are evenly distributed around the upper circumference of the support sleeve, and three through holes are evenly distributed around the circumference of the support base. The through holes are much larger than the outer diameter of the connecting bolts, and the connecting bolts pass through the corresponding through holes to enable the support base to swing eccentrically on the support sleeve.

9. The glass electron tube die and glass shell sealing device according to claim 1, characterized in that: A bearing sleeve is threadedly connected to the cylinder output end. The upper end of the upper shaft is installed in the bearing sleeve through a bearing and is limited by a snap ring so that the cylinder output end remains stationary when the upper shaft rotates.

10. A method for sealing a glass electron tube die column to a glass shell, applicable to the glass electron tube die column and glass shell sealing device according to any one of claims 1-9, characterized in that, The steps are as follows: (1) Place the core column and glass shell to be sealed in a constant temperature furnace for preheating. After preheating, the glass shell is clamped onto the drill bit. Open the combustible gas pipe and oxygen pipe switch connected to the nozzle, ignite the nozzle outlet, push the first and second arms close to the support seat, step on the left pedal to heat the support seat that will contact the core column, close the oxygen pipe switch, then push the first and second arms open and insert the core column to be sealed into the center hole at the top of the support seat. (2) Start the power source to drive the lower vertical shaft and the upper vertical shaft to rotate at the same speed, thereby driving the core column and the glass shell to rotate; (3) Extend the control cylinder to move the upper vertical shaft and glass shell down, and move the glass shell down to a position close to the core column; then step on the left pedal and move the lower vertical shaft up through the swing arm, thereby moving the support seat and core column up to achieve the insertion of the core column and glass shell; when inserting, use an iron rod to tap the support seat to adjust the coaxiality of the core column and glass shell; (4) After the core column and the glass shell are inserted, push the first and second arms close to the core column, turn on the oxygen tube switch, adjust the flame intensity, and continue to heat the glass shell. After heating, the insertion part of the core column and the glass shell begins to fuse together, thus achieving the core column sealing of the electron tube. (5) Close the combustible gas pipe and oxygen pipe switch connected to the nozzle, release the right pedal, and move the nozzle to both sides; then press the left pedal repeatedly to adjust the relative position of the core column and the glass shell; after adjusting the position, keep the left pedal pressed down, and after cooling, release the left pedal and the drill bit, and you can remove the sealed electron tube.

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