Thermocouple sealing mechanism

Abstract

The utility model relates to thermocouple encapsulation technical field discloses a kind of thermocouple glue sealing mechanism, and thermocouple glue sealing mechanism is used to inject glue between the protection tube and odd silk of thermocouple, and thermocouple glue sealing mechanism includes sealing box, glue sealing component and transposition component;Glue sealing component includes mounting bracket, glue dispensing valve, glue dispensing head and electric push rod;Mounting bracket is slidably connected to the inner wall of sealing box;Glue dispensing valve is fixed in mounting bracket;Glue dispensing head is communicated in the glue outlet of glue dispensing valve;Electric push rod is installed in sealing box, and the telescopic end of electric push rod is fixed in mounting bracket;Transposition component includes rotary disc, several fixed cylinders and stepper motor;Rotary disc is rotatably connected to the inside of sealing box;Several fixed cylinders are arranged along the circumference of rotary disc.The utility model is intermittently rotated by rotary disc, and lifting type glue injection is matched, realizes batch continuous operation, can be completed in inert gas environment under glue sealing, and processing efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of thermocouple packaging technology, and more specifically, to a thermocouple encapsulation mechanism. Background Technology

[0002] As a core sensing element in industrial temperature measurement, thermocouples have high sealing and protection requirements in their production and assembly process. Especially for thermocouple wires made of materials that are easily oxidized at high temperatures, the thermocouple wires must first be inserted into an insulating tube for positioning and fixation. Then, the insulating tube with integrated thermocouple wires is installed into the inner cavity of a protective tube. Subsequently, the air inside the protective tube is evacuated and filled with argon to form an inert protective atmosphere. Finally, the ends are sealed with adhesive to prevent residual oxygen inside the tube, prevent oxidation and deterioration of the internal thermocouple wires under high-temperature detection conditions, and ensure temperature measurement accuracy and long service life.

[0003] Current thermocouple sealing methods mostly rely on manual application of adhesive, which depends on the pre-filling of the protective tube with argon gas and the fact that argon gas is denser than air to maintain an inert environment inside the tube for a short time. Operators need to complete the sealing quickly before the gas dissipates. This not only makes it easy for air to mix in during the process, resulting in excessive residual oxygen after sealing, but also has the problem of low processing efficiency per station, making it difficult to adapt to the needs of large-scale mass production. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore: The first aspect of this utility model proposes a thermocouple sealing mechanism, which is used to inject adhesive between the protective tube and the thermocouple wire of a thermocouple. The thermocouple sealing mechanism includes a sealing box, a sealing assembly, and a switching assembly. The sealing assembly includes a mounting frame, a dispensing valve, a dispensing head, and an electric push rod. The mounting frame is slidably connected to the inner wall of the sealing box. The dispensing valve is fixed to the mounting frame. The dispensing head is connected to the dispensing outlet of the dispensing valve. The electric push rod is installed in the sealing box, and the telescopic end of the electric push rod is fixed to the mounting frame. The switching assembly includes a rotating disk, several fixed cylinders, and a stepper motor. The rotating disk is rotatably connected to the inside of the sealing box. Several fixed cylinders are arranged circumferentially along the rotating disk, and each fixed cylinder is provided with a limiting cavity with an upper opening. The output end of the stepper motor is fixed to the rotating disk, and the stepper motor is used to drive the rotating disk to rotate intermittently, thereby driving each fixed cylinder to switch sequentially to the dispensing position coaxial with the dispensing head.

[0006] This utility model provides a thermocouple sealing mechanism. In use, several protective tubes to be sealed are inserted into the limiting cavities of corresponding fixed cylinders on a rotating disk. An external vacuum replacement device first removes air from the sealed box and fills it with argon gas, ensuring the sealing operation is conducted in an inert gas protective atmosphere. Then, a stepper motor drives the rotating disk to rotate intermittently, switching one fixed cylinder to the dispensing position coaxial with the dispensing head. An electric push rod extends, causing the mounting frame to slide downwards along the slide rail, bringing the dispensing head closer to the protective tube. The dispensing valve opens, injecting a predetermined amount of glue from the storage cylinder into the gap between the protective tube and the internal thermocouple wires. A heating block maintains a constant temperature in the storage cylinder throughout the process, ensuring stable glue flow and viscosity. After a single protective tube is filled with glue, the electric push rod drives the mounting frame and dispensing head to rise and reset. The stepper motor continues to drive the rotating disk to rotate and index, switching the next fixed cylinder to the dispensing position. This cycle repeats continuously to complete the sealing of multiple thermocouple protective tubes.

[0007] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0008] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a cross-sectional structural diagram of one embodiment of the present invention; Figure 3 This is a schematic diagram of the sealing component structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the transposition component structure in one embodiment of the present invention.

[0009] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100. Sealed box; 200. Sealing assembly; 210. Mounting bracket; 220. Dispensing valve; 230. Dispensing head; 240. Electric push rod; 250. Glue reservoir; 260. Heating block; 270. Slide rail; 280. Slider; 300, transposition assembly; 310, rotary disk; 320, fixed cylinder; 330, stepper motor; 340, limiting cavity; 350, threaded rod. Detailed Implementation

[0010] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0011] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0012] Please see Figures 1 to 4 A thermocouple sealing mechanism is provided, which is used to inject adhesive between the protective tube and the thermocouple wire of a thermocouple. The thermocouple sealing mechanism includes a sealing box 100, a sealing assembly 200, and a transposition assembly 300. The sealing assembly 200 includes a mounting bracket 210, a dispensing valve 220, a dispensing head 230, and an electric push rod 240. The mounting bracket 210 is slidably connected to the inner wall of the sealing box 100. The dispensing valve 220 is fixed to the mounting bracket 210. The dispensing head 230 is connected to the dispensing port of the dispensing valve 220. The electric push rod 240 is mounted on the sealing box 100 and is electrically driven... The telescopic end of the rod 240 is fixed to the mounting bracket 210; the switching assembly 300 includes a rotating disk 310, several fixed cylinders 320 and a stepper motor 330; the rotating disk 310 is rotatably connected to the inside of the sealed box 100; the several fixed cylinders 320 are arranged around the circumference of the rotating disk 310, and the fixed cylinders 320 are provided with a limiting cavity 340 with an upper opening; the output end of the stepper motor 330 is fixed to the rotating disk 310, and the stepper motor 330 is used to drive the rotating disk 310 to rotate intermittently, thereby driving each fixed cylinder 320 to switch sequentially to the dispensing station coaxial with the dispensing head 230.

[0013] In this embodiment: The mounting bracket 210 is slidably connected to the inner wall of the sealing box 100; the sealing box 100 provides a closed working space for the sealing operation, isolating it from the outside air.

[0014] The dispensing valve 220 is fixed to the mounting bracket 210; the dispensing valve 220 is used to control the flow of glue and the amount of glue dispensed at one time.

[0015] The dispensing head 230 is connected to the dispensing outlet of the dispensing valve 220.

[0016] The electric push rod 240 is installed in the sealed box 100, and the telescopic end of the electric push rod 240 is fixed to the mounting bracket 210; the electric push rod 240 provides driving force for the lifting and lowering of the mounting bracket 210, and controls the dispensing head 230 to approach the protective tube.

[0017] The rotary disk 310 is rotatably connected to the inside of the sealed box 100; the rotary disk 310 is used to arrange multiple fixed cylinders 320 to realize multi-station cyclic operation.

[0018] Several fixed cylinders 320 are arranged around the circumference of the rotating disk 310, and each fixed cylinder 320 is provided with a limiting cavity 340 with an opening at the upper end.

[0019] The output end of the stepper motor 330 is fixed to the rotary disk 310. The stepper motor 330 is used to drive the rotary disk 310 to rotate intermittently, thereby driving each fixed cylinder 320 to switch sequentially to the dispensing station coaxial with the dispensing head 230.

[0020] Please see Figure 2 In some embodiments of this utility model, the sealing assembly 200 further includes a glue storage cylinder 250, a heating block 260, a slide rail 270, and a slider 280; the glue storage cylinder 250 is connected to the glue inlet of the dispensing valve 220, and the glue storage cylinder 250 is installed on the mounting frame 210, and the glue storage cylinder 250 is used to store glue; the heating block 260 is sleeved on the outer wall of the glue storage cylinder 250, and the heating block 260 is used to heat the glue in the glue storage cylinder 250; the slide rail 270 is fixed to the inner wall of the sealing box 100; one side of the slider 280 is slidably connected to the slide rail 270, and the other side is connected to the mounting frame 210.

[0021] In this embodiment: The glue storage cylinder 250 is connected to the glue inlet of the dispensing valve 220 and is mounted on the mounting bracket 210. The glue storage cylinder 250 is used to store glue. The glue storage cylinder 250 continuously supplies glue to the dispensing valve 220, reducing downtime due to frequent glue replenishment and improving continuous processing capability.

[0022] Heating block 260 is sleeved on the outer wall of glue storage cylinder 250. Heating block 260 is used to heat the glue in glue storage cylinder 250. Heating block 260 is used to maintain the flow viscosity of glue and avoid fluctuation in glue output due to temperature changes.

[0023] The slide rail 270 is fixed to the inner wall of the sealed box 100.

[0024] One side of the slider 280 is slidably connected to the slide rail 270, and the other side is connected to the mounting bracket 210.

[0025] Please see Figure 4 In some embodiments of this utility model, the shifting component 300 further includes a plurality of threaded rods 350, which are respectively fixed to a plurality of fixed cylinders 320, and the threaded rods 350 are threadedly connected to the rotating disk 310.

[0026] In this embodiment: Several threaded rods 350 are respectively fixed to several fixed cylinders 320, and the threaded rods 350 are threadedly connected to the rotating disk 310. On the one hand, the fixed cylinders 320 can be disassembled by the threaded rods 350, and the fixed cylinders 320 with the corresponding inner diameter specifications can be replaced for thermocouple protection tubes with different outer diameters to meet the processing requirements of protection tubes with different diameters. On the other hand, the axial installation height of the fixed cylinders 320 relative to the rotating disk 310 can be adjusted by rotating the threaded rods 350, so that the upper end faces of thermocouple protection tubes with different length specifications are kept flush.

[0027] Please see Figure 1 In some embodiments of this utility model, the sealed box 100 is externally connected to a vacuum replacement device via a pipeline. The vacuum replacement device is used to extract air from the inside of the sealed box 100 and fill it with argon gas.

[0028] In this embodiment: The sealed box 100 is connected to a vacuum replacement device via a pipeline. The vacuum replacement device is used to extract air from the inside of the sealed box 100 and fill it with argon. Before operation, the air inside the sealed box 100 is extracted and argon is filled in to form an inert protective atmosphere and prevent air from remaining in the protective tube.

[0029] Please see Figure 4 In some embodiments of this utility model, the limiting cavity 340 is used to insert the positioning protection tube, and the upper end of the protection tube extends to the outside of the fixing cylinder 320.

[0030] In this embodiment: The limiting cavity 340 is used to insert the positioning protection tube, and the upper end of the protection tube extends to the outside of the fixing cylinder 320; the opening of the protection tube extends out of the fixing cylinder 320 to facilitate insertion and removal by the operator.

[0031] Please see Figure 2 In some embodiments of this utility model, the cylinder of the electric push rod 240 is fixed to the inside of the sealed box 100 by bolts, and several fixed cylinders 320 are evenly distributed along the circumference of the rotating disk 310.

[0032] In this embodiment: The cylinder body of the electric push rod 240 is fixed to the inside of the sealed box 100 by bolts, and several fixed cylinders 320 are evenly distributed along the circumference of the rotating disk 310.

[0033] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0034] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A thermocouple sealing mechanism, characterized in that, The thermocouple sealing mechanism is used to inject adhesive between the thermocouple's protective tube and the thermocouple wire. The thermocouple sealing mechanism includes: Sealed box (100); The sealing assembly (200) includes a mounting bracket (210), a dispensing valve (220), a dispensing head (230), and an electric push rod (240). The mounting bracket (210) is slidably connected to the inner wall of the sealed box (100); The dispensing valve (220) is fixed to the mounting bracket (210); The dispensing head (230) is connected to the dispensing outlet of the dispensing valve (220); The electric push rod (240) is installed in the sealed box (100), and the telescopic end of the electric push rod (240) is fixed to the mounting bracket (210). The transposition assembly (300) includes a rotary disk (310), a plurality of fixed cylinders (320) and a stepper motor (330). The rotating disk (310) is rotatably connected to the interior of the sealed box (100); Several of the fixed cylinders (320) are arranged circumferentially along the rotating disk (310), and each fixed cylinder (320) is provided with a limiting cavity (340) with an upper opening. The output end of the stepper motor (330) is fixed to the rotating disk (310). The stepper motor (330) is used to drive the rotating disk (310) to rotate intermittently, thereby driving each of the fixed cylinders (320) to switch sequentially to the dispensing station coaxial with the dispensing head (230).

2. The thermocouple sealing mechanism according to claim 1, characterized in that, The sealing assembly (200) further includes: A glue storage cylinder (250) is connected to the glue inlet of the dispensing valve (220) and is mounted on the mounting bracket (210). The glue storage cylinder (250) is used to store glue. A heating block (260) is sleeved on the outer wall of the glue storage cylinder (250) and is used to heat the glue in the glue storage cylinder (250); A slide rail (270) is fixed to the inner wall of the sealed box (100); A slider (280) is slidably connected to the slide rail (270) on one side and connected to the mounting bracket (210) on the other side.

3. The thermocouple sealing mechanism according to claim 1, characterized in that, The transposition component (300) further includes: A plurality of threaded rods (350) are respectively fixed to the plurality of fixed cylinders (320), and the threaded rods (350) are threadedly connected to the rotating disk (310).

4. The thermocouple sealing mechanism according to claim 1, characterized in that, The sealed box (100) is connected to a vacuum replacement device via a pipeline. The vacuum replacement device is used to extract air from the inside of the sealed box (100) and fill it with argon gas.

5. The thermocouple sealing mechanism according to claim 1, characterized in that, The limiting cavity (340) is used to insert and position the protective tube, and the upper end of the protective tube extends to the outside of the fixing cylinder (320).

6. The thermocouple sealing mechanism according to claim 1, characterized in that, The cylinder of the electric push rod (240) is fixed to the inside of the sealing box (100) by bolts, and several fixed cylinders (320) are evenly distributed along the circumference of the rotating disk (310).

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