A sealing furnace in a glove box for gas discharge lamps

Abstract

The application provides a sealing furnace in a glove box for gas discharge lamp, the glove box comprises a box body, a material placing support capable of moving up and down is arranged in the box body, characterized in that the material placing support is in the shape of a long strip, at least two rows of placing holes for placing gas discharge lamps are formed on the material placing support along the length direction of the material placing support, the sealing furnace is arranged on the upper part of the box body, the sealing furnace comprises a cooling plate, an electromagnetic heating plate and a sealing cover, the electromagnetic heating plate is in the shape of a long strip, the sealing cover is installed on the upper part of the box body and is sealingly connected with the box body, the cooling plate and the electromagnetic heating plate are installed in the sealing cover from bottom to top, and a through slot is formed in the cooling plate for the material placing support to pass through.

Description

TECHNICAL FIELD

[0001] The present application belongs to the mechanical technical field, and relates to a sealing furnace in a glove box for gas discharge lamps. BACKGROUND

[0002] A gas discharge lamp is a lamp that emits light by the discharge of a gas, a metal vapor, or a mixture of several gases and metal vapors. It is an electric light source that converts electrical energy into light by gas discharge. There are many types of gas discharge, and the most commonly used are glow discharge and arc discharge (see electric arc discharge). Glow discharge is generally used for neon lights and indicator lights. Arc discharge can have a very strong light output, and lighting sources all use arc discharge. Fluorescent lamps, high-pressure mercury lamps, sodium lamps, and metal halide lamps are the most commonly used gas discharge lamps for lighting. Gas discharge lamps have extremely wide applications in the fields of industry, agriculture, medical and health care, and scientific research.

[0003] During the manufacturing process of a gas discharge lamp, a glove box is needed to assemble electrodes, ceramic tubes, caps, and solder rings together for sealing, and xenon gas needs to be filled into the arc tube to ensure that a small amount of xenon gas is contained in the arc tube to improve the starting characteristics of the lamp.

[0004] According to the search, a glove box type intermediate frequency furnace heating ceramic metal halide lamp arc tube sealing equipment (application number: 201520863522.4; publication number: CN205122528U) is disclosed in Chinese patent documents. The glove box type intermediate frequency furnace heating ceramic metal halide lamp arc tube sealing equipment is characterized in that: the equipment comprises a glove box, a glove box rack, a first transition cabin, a second transition cabin, a right face operation station, a front face operation station, and a left face operation station; the upper part of the glove box is connected with a sealing furnace head; the sealing furnace head is connected with a heating power supply through a heating coil; the sealing furnace head is connected with a vacuum pumping mechanical pump, a vacuum pumping molecular pump, and a gas filling mechanism through a gas pumping and filling pipeline; the vacuum pumping molecular pump is connected with the vacuum pumping mechanical pump; a lifting mechanism is arranged below the sealing furnace head; the glove box is connected with a gas circulation system; a cooling system is arranged at the bottom of the glove box and connected with a water chiller; the sealing furnace head, a gas cylinder, the vacuum pumping molecular pump, and the vacuum pumping mechanical pump are respectively connected with a PLC controller.

[0005] Every time a group of gas discharge lamps is processed, xenon gas needs to be filled and discharged once. The discharged xenon gas cannot be used again and needs to be sent back to a processing plant for treatment. As the price of xenon gas continues to rise, the manufacturing cost of products also increases significantly. However, the internal structure of the sealing furnace head in the sealing equipment disclosed in the patent is too complex, and the heating coil can only heat a ring of products placed on the support, resulting in that the internal space of the sealing furnace head is not fully utilized, and the utilization rate of xenon gas is extremely low. Therefore, it is necessary to design a sealing furnace in a glove box for gas discharge lamps. SUMMARY

[0006] The sealing furnace for the glove box of the gas discharge lamp has the characteristics of high production capacity.

[0007] The purpose of the present application can be achieved by the following technical solutions: a sealing furnace for a glove box of a gas discharge lamp, the glove box comprising a box body, a material placing fixture capable of moving up and down is arranged in the box body, characterized in that the material placing fixture is in the shape of a long strip, at least two rows of placing holes for placing the gas discharge lamp are formed on the material placing fixture along the length direction of the material placing fixture, the sealing furnace is arranged on the upper part of the box body, the sealing furnace comprises a cooling plate, an electromagnetic heating plate and a sealing cover, the electromagnetic heating plate is in the shape of a long strip, the sealing cover is installed on the upper part of the box body and is sealingly connected with the electromagnetic heating plate, the cooling plate and the electromagnetic heating plate are installed in the sealing cover from bottom to top, and a through slot is formed in the cooling plate for the material placing fixture to pass through.

[0008] With the structure, since the electromagnetic heating plate is in the shape of a long strip, the material placing fixture can place the products along the length direction of the material placing fixture under the condition of ensuring the product quality, the number of products sealed at a time is increased, and the amount of xenon used by a single product is also reduced; at the same time, the structure of the sealing furnace is relatively simple, the electrodes of the products are close to the electromagnetic heating plate when the material placing fixture moves upward, and thus the utilization rate of xenon in the sealing furnace is greatly improved, and the production capacity is high.

[0009] The electromagnetic heating plate is horizontally arranged in the sealing cover.

[0010] With the structure, the electrodes of the products are close to the lower surface of the electromagnetic heating plate when the material placing fixture moves upward, and the heat on the upper side is radiated to the products on the lower side through the electromagnetic heating on the upper side, so that the sealing operation is realized.

[0011] The cooling plate and the electromagnetic heating plate further have a heat reflecting plate therebetween.

[0012] With the structure, the heat reflecting plate is added to ensure the sealing quality of the products, the products in the box body are prevented from directly contacting the electromagnetic heating plate by the isolation effect of the heat reflecting plate, and the products are prevented from being polluted from the outside.

[0013] The heat reflecting plate is a quartz glass plate.

[0014] As another solution, the electromagnetic heating plate is vertically arranged in the sealing cover, and the electromagnetic heating plates have a heating channel therebetween.

[0015] With the structure, the electrodes of the products are located in the heating channel when the material placing fixture moves upward, and the heat on the two sides is radiated to the products in the middle through the electromagnetic heating on the two sides, so that the sealing operation is realized.

[0016] The sealing cover is installed with a heat reflecting cover matched with the electromagnetic heating plate.

[0017] With the structure, by increasing the heat reflecting cover, the product quality is ensured, the product in the box is not in direct contact with the electromagnetic heating plate, and the product is prevented from being polluted by the outside.

[0018] The heat reflecting cover is a quartz glass plate.

[0019] The cooling plate is further provided with a cooling water pipeline.

[0020] With the structure, the product after sealing can be cooled by the cooling plate.

[0021] The feeding support is further provided with a gas pipeline.

[0022] With the structure, the feeding support can be filled with xenon gas during sealing.

[0023] The sealing cover is made of high-temperature resistant material.

[0024] The material of the sealing cover is quartz glass or ceramic.

[0025] Compared with the prior art, the sealing furnace in the glove box for gas discharge lamp has the advantages that:

[0026] In the utility model, the long strip-shaped electromagnetic heating plate is adopted, the feeding support can place products along the length direction under the condition of ensuring product quality, the number of single sealing products is improved, the amount of xenon gas used by single product is also reduced, the structure of the sealing furnace is simple, the electrode of the product is close to the electromagnetic heating plate by moving the feeding support upward, the utilization rate of xenon gas in the sealing furnace is greatly improved, and the production capacity is high. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a plane structure schematic view of the glove box;

[0028] Figure 2 It is a cross section schematic view of the sealing furnace in the glove box;

[0029] Figure 3 It is a plane structure schematic view of the feeding support in the utility model;

[0030] Figure 4 It is a three-dimensional schematic view of another embodiment of the sealing furnace in the glove box;

[0031] Figure 5 It is a cross section schematic view of another embodiment of the sealing furnace in the glove box;

[0032] In the figure, 1 is the box body; 2 is the material feeding tray; 2a is the placement hole; 3 is the sealing cover; 4 is the cooling plate; 5 is the electromagnetic heating plate; 6 is the heat reflector plate; and 7 is the heat reflector cover. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0034] like Figures 1-3 As shown, the sealing furnace in the glove box for this gas discharge lamp includes a box body 1. Inside the box body 1, there is a material feeding tray 2 that can move up and down. In this embodiment, the structure of the material feeding tray 2 moving up and down adopts the prior art. When the material feeding tray 2 moves upward to seal, it seals with other components using the prior art structure. The material feeding tray 2 is elongated and has at least two rows of placement holes 2a along its length for placing the gas discharge lamp. The sealing furnace is located on the upper part of the box body 1. The sealing furnace includes a cooling plate 4, an electromagnetic heating plate 5, and a sealing cover 3. In this embodiment, the electromagnetic heating plate 5 is a commercially available product. The electromagnetic heating plate 5 is elongated and the sealing cover 3 is installed on the upper part of the box body 1, and the two are sealed together. The cooling plate 4 and the electromagnetic heating plate 5 are installed inside the sealing cover 3 from bottom to top. The cooling plate 4 has a through groove for the material feeding tray 2 to pass through.

[0035] With this structure, the use of a long strip-shaped electromagnetic heating plate 5 allows the feeding tray 2 to place products along its length while ensuring product quality, increasing the number of products that can be sealed at one time, and reducing the amount of xenon gas used per product. At the same time, the structure of the sealing furnace is relatively simple. The feeding tray 2 moves upward to bring the product's electrodes closer to the electromagnetic heating plate 5, thereby greatly improving the xenon gas utilization rate inside the sealing furnace and increasing production capacity.

[0036] Specifically: There is one electromagnetic heating plate 5, which is horizontally arranged inside the sealing cover 3. With this structure, the material feeding tray 2 moves upward to bring the product's electrodes close to the lower surface of the electromagnetic heating plate 5. Through electromagnetic heating, the heat from the upper part is radiated to the product below, thereby achieving the sealing operation. There is also a heat reflector plate 6 between the cooling plate 4 and the electromagnetic heating plate 5. With this structure, by adding the heat reflector plate 6, the sealing quality of the product is ensured, and the heat reflector plate 6 also acts as an insulator, preventing the product inside the box 1 from directly contacting the electromagnetic heating plate 5 and avoiding external contamination of the product. The heat reflector plate 6 is a quartz glass plate.

[0037] Of course, according to the actual situation can also be used in this way, the specific: the number of electromagnetic heating plate 5 is two, electromagnetic heating plate 5 is arranged vertically in the sealed cover 3, and electromagnetic heating plate 5 has a heating channel between them; using this structure, the upward movement of the feeding fixture 2 makes the product electrode located in the heating channel, and the heat on both sides is radiated to the product in the middle through the two sides, thereby realizing the sealing operation; the sealed cover 3 is provided with a heat reflecting cover 7 matched with the electromagnetic heating plate 5; using this structure, by increasing the heat reflecting cover 7, the product in the box is not in direct contact with the electromagnetic heating plate 5, avoiding the pollution of the product outside, while ensuring the sealing quality of the product; the heat reflecting cover 7 is a quartz glass plate, as shown in Figures 4-5

[0038] The cooling plate 4 also has a cooling water pipeline, which is connected to an external water source in this embodiment and also uses an existing structure.

[0039] Using this structure, the product after sealing can be cooled by the cooling plate 4.

[0040] The feeding fixture 2 also has a gas pipeline; in this embodiment, the gas pipeline is connected to an external gas source and also uses an existing structure.

[0041] Using this structure, the product can be filled with xenon gas during sealing.

[0042] The sealed cover 3 is made of high-temperature resistant material.

[0043] The material of the sealed cover 3 is quartz glass or ceramic.

[0044] Background technology can only seal six products at a time, because it uses a heating coil, and the fixture also uses a circular structure. If the product is placed in multiple circles from the outside to the inside, the inner product will be too far away from the heating coil, resulting in poor sealing. The only way to increase the outer diameter of the fixture is to increase the number of products placed in a ring shape, but this will increase the size of the entire furnace, and the space in the middle of the fixture cannot be used to place products, which will greatly reduce the utilization rate of xenon gas. The utilization rate of xenon gas in the background technology is 20-30%. Through the above improvement, the feeding fixture 2 has two rows of placement holes 2a along its length direction, and twelve products can be placed in one row of placement holes 2a. The number of products in a single sealing operation can be increased by six times, and the number of products is only limited by the length direction. The increase in the number of products will not affect the utilization rate of xenon gas, and the adjacent products can be designed to be closely arranged, thereby reducing the unnecessary space on the feeding fixture 2. The utilization rate of xenon gas in this application can reach more than 80%.

[0045] ​All the above components are general standard components or components known to those skilled in the art, the structure and principle of which can be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0046] The specific embodiments described herein are merely illustrative of the principles of this application. Numerous modifications and adaptations will be apparent to those skilled in the art without departing from the spirit of the application or the scope of the appended claims.

Claims

1. A sealing furnace in a glove box for gas discharge lamps, the glove box comprising a box body (1) in which a material feeding support (2) capable of moving up and down is arranged, characterized in that, The shape of the feeding fixture (2) is long strip, and two rows of placing holes (2a) for placing gas discharge lamps are formed on the feeding fixture (2) along the length direction of the feeding fixture (2); the sealing furnace is arranged on the upper part of the box (1), and comprises a cooling plate (4), an electromagnetic heating plate (5) and a sealing cover (3); the electromagnetic heating plate (5) is long strip-shaped; the sealing cover (3) is arranged on the upper part of the box (1) and is sealingly connected with the box (1); the cooling plate (4) and the electromagnetic heating plate (5) are arranged in the sealing cover (3) from bottom to top; the cooling plate (4) is provided with a through slot for the feeding fixture (2); the cooling plate (4) is further provided with a cooling water pipeline; the feeding fixture (2) is further provided with a gas pipeline; and the sealing cover (3) is made of high-temperature resistant material.

2. A seal furnace in a glove box for a gas discharge lamp according to claim 1, wherein The electromagnetic heating plate (5) is horizontally arranged in the sealing cover (3).

3. A seal furnace in a glove box for gas discharge lamps according to claim 2, characterized in that The cooling plate (4) and the electromagnetic heating plate (5) are further provided with a heat reflecting plate (6).

4. A seal furnace in a glove box for a gas discharge lamp according to claim 3, wherein The heat reflecting plate (6) is a quartz glass plate.

5. A seal furnace in a glove box for a gas discharge lamp according to claim 1, wherein The electromagnetic heating plate (5) is vertically arranged in the sealing cover (3), and the electromagnetic heating plates (5) are provided with heating channels.

6. A seal furnace in a glove box for a gas discharge lamp according to claim 1, wherein The sealing cover (3) is provided with a heat reflecting cover (7) matched with the electromagnetic heating plate (5).

7. A seal furnace in a glove box for gas discharge lamps according to claim 6, characterized in that The heat reflecting cover (7) is a quartz glass plate.

8. A seal furnace in a glove box for a gas discharge lamp according to claim 1, wherein The material of the sealing cover (3) is quartz glass or ceramic.

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