Thermocouple automatic sleeving process method

Abstract

The invention relates to an automatic sleeving process method for a thermocouple, and belongs to the field of high-temperature-resistant thermocouples. Comprising the following steps that S1, a thermocouple wire is fed, straightened and then cut into a fixed length; s2, single-hole ceramic tubes are fed, and the multiple single-hole ceramic tubes are moved to a perforating station; s3, enabling the thermocouple wire in the step S1 to pass through the plurality of single-hole ceramic tubes in the step S2 to form a single-group sleeve thermocouple wire; s4, repeating the steps S1 to S3 to form two groups of sleeve thermocouple wires; s5, the double-hole ceramic tube is fed, and the posture of the double-hole ceramic tube is adjusted; s6, enabling the two groups of sleeve thermocouple wires in the step S4 to pass through the double-hole ceramic tube in the step S5; and S7, welding the ends, close to the double-hole ceramic tube, of the two sets of sleeve thermocouple wires in the step S6 to complete the thermocouple sleeve. According to the invention, the thermocouple wire sleeve can be automatically and efficiently operated, and the processing consistency of the thermocouple is ensured.

Description

Technical Field

[0001] The invention relates to the field of high temperature resistant thermocouples, and in particular to a thermocouple automatic casing process method. Background Art

[0002] During the high temperature endurance test, it is necessary to measure the temperature in a high temperature environment, which requires extremely high temperature resistance of the thermocouple. The existing technology generally uses a ceramic tube on the surface of the thermocouple wire to achieve this through the technical principle of ceramic insulation. The existing production method mainly relies on manual sheathing, which has low work efficiency and poor consistency of the produced thermocouples. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a thermocouple automatic casing process method to achieve efficient casing operation and ensure the consistency of the thermocouple.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A thermocouple automatic casing process method comprises the following steps:

[0005] S1: Feed the thermocouple wire, straighten it and cut it into fixed length;

[0006] S2: loading single-hole ceramic tubes, and moving a plurality of single-hole ceramic tubes to a perforation station;

[0007] S3: passing the thermocouple wire in step S1 through the plurality of single-hole ceramic tubes in step S2 to form a single set of sheathed thermocouple wires;

[0008] S4: repeat steps S1-S3 to form two sets of sheathed thermocouple wires;

[0009] S5: loading the double-hole ceramic tube and adjusting the posture of the double-hole ceramic tube;

[0010] S6: Passing the two sets of sheathed thermocouple wires in step S4 through the double-hole ceramic tube in step S5;

[0011] S7: welding the two groups of sheath thermocouple wires in step S6 close to one end of the double-hole ceramic tube to complete the thermocouple sheath.

[0012] The beneficial effects of the present invention are: the thermocouple wire is sleeved on the single-hole ceramic tube and the double-hole ceramic tube in an automated manner, and the two thermocouple wires after being sleeved on the double-hole ceramic tube are welded. Compared with the manual sleeve method in the prior art, the sleeve efficiency is high, and the thermocouples produced by the automated method have higher consistency.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Further, step S1 comprises:

[0015] S11: feeding the thermocouple wire by unwinding equipment or manually;

[0016] S12: straightening the thermocouple wire by a straightening device;

[0017] S13: Displacing the straightened thermocouple wire to a preset length through a servo device;

[0018] S14: Cutting the thermocouple wire in step S13 by a cutting device.

[0019] The beneficial effect of adopting the above further solution is: the feeding, straightening and cutting of the thermocouple wire are realized through the unwinding device, the straightening device, the servo device and the cutting device, which is conducive to improving the automation level of the pre-sleeve preparation stage.

[0020] Further, step S2 comprises:

[0021] S21: feeding the single-hole ceramic tubes through a vibrating plate so that a plurality of the single-hole ceramic tubes are output along a preset direction;

[0022] S22: transporting a preset number of the single-hole ceramic tubes to the perforating station by means of a transport device.

[0023] The beneficial effects of adopting the above further scheme are: the vibration plate is conducive to arranging and outputting multiple disordered single-hole ceramic tubes in a preset direction, and the handling equipment is conducive to transporting multiple single-hole ceramic tubes to be sleeved on the thermocouple wire to the perforation station to realize sleeve, replacing the manual perforation operation and improving the degree of automation.

[0024] Further, step S3 includes:

[0025] S31: Compressing the plurality of single-hole ceramic tubes on the perforating station by a profiling device so that the plurality of single-hole ceramic tubes are coaxially arranged;

[0026] S32: The cut thermocouple wire is displaced to pass through a plurality of coaxially arranged single-hole ceramic tubes by a servo device to form a single set of sheathed thermocouple wires.

[0027] The beneficial effects of adopting the above further scheme are: the profiling equipment is conducive to pressing multiple single-hole ceramic tubes and placing them coaxially on the punching station, and the servo equipment is conducive to driving the thermocouple wire to move on the punching station and pass through multiple single-hole ceramic tubes, replacing manual operation and improving the degree of automation.

[0028] Further, step S5 includes:

[0029] S51: feeding the double-hole ceramic tubes through a vibrating plate so that a plurality of the double-hole ceramic tubes are output along a preset direction;

[0030] S52: transporting one of the double-hole ceramic tubes into the range of the visual recognition device by means of a transport device;

[0031] S53: photographing and identifying the hole positions of the double-hole ceramic tube by the visual recognition device;

[0032] S54: adjusting the two hole positions of the double-hole ceramic tube to correspond to the two groups of sheath thermocouple wires through a servo rotating device.

[0033] The beneficial effects of adopting the above further scheme are: the vibration plate is conducive to arranging and outputting multiple disordered double-hole ceramic tubes in a preset direction, the handling equipment combined with the visual recognition equipment is conducive to identifying the posture of the double-hole ceramic tube by taking pictures, and the servo rotation equipment is conducive to adjusting the double-hole posture of the double-hole ceramic tube to correspond to the two groups of sheath thermocouple wires, which is convenient for the two groups of sheath thermocouple wires to pass through the double-hole ceramic tube in the subsequent steps, replacing manual loading and identification operations and improving the degree of automation.

[0034] Further, step S6 includes:

[0035] S61: Using a servo device, the distance between the two sets of thermocouple wires of the sleeve is displaced to correspond to the distance between the two hole positions of the double-hole ceramic tube;

[0036] S62: Using a servo device, two sets of sheath thermocouple wires are moved to two hole positions passing through the double-hole ceramic tube.

[0037] The beneficial effect of adopting the above further solution is that the servo device is conducive to driving the displacement of the two sets of sheath thermocouple wires and passing through the double-hole ceramic tube, replacing the manual perforation operation and improving the degree of automation.

[0038] Further, step S7 includes:

[0039] S71: transporting the two sets of sheath thermocouple wires that have passed through the double-hole ceramic tube in step S62 to a welding station by means of a transport device;

[0040] S72: clamping and fixing the two sets of sheath thermocouple wires in step S71 close to one end of the double-hole ceramic tube by a clamping device;

[0041] S73: cutting one end of the two sets of thermocouple wires in the sheath that are clamped and fixed in step S72 by a cutting device;

[0042] S74: welding the cut ends of the two sets of sheath thermocouple wires in step S73 by using a welding device.

[0043] The beneficial effects of adopting the above further scheme are: the handling equipment is conducive to replacing manual handling, and the clamping equipment, cutting equipment and welding equipment are conducive to fixing, cutting and welding the ends of two sets of sheath thermocouple wires, replacing manual operation and improving the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A process flow chart of an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of two sets of sheathed thermocouple wires provided in an embodiment of the present invention;

[0046] Figure 3 A schematic diagram of two sets of sheathed thermocouple wires provided in an embodiment of the present invention after passing through a double-hole ceramic tube;

[0047] Figure 4 A schematic diagram of a completed thermocouple sleeve provided in an embodiment of the present invention.

[0048] in, Figure 4 The black circles in the figure represent solder joints.

[0049] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0050] 1. Thermocouple wire; 2. Single-hole ceramic tube; 3. Double-hole ceramic tube. DETAILED DESCRIPTION

[0051] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0052] like Figures 1 to 4 As shown, a thermocouple automatic casing process method comprises the following steps:

[0053] S1: feeding, straightening and cutting the thermocouple wire 1 into a fixed length;

[0054] S2: loading the single-hole ceramic tube 2, and moving a plurality of the single-hole ceramic tubes 2 to the perforation station;

[0055] S3: passing the thermocouple wire 1 in step S1 through the plurality of single-hole ceramic tubes 2 in step S2 to form a single set of sheathed thermocouple wires;

[0056] S4: repeat steps S1-S3 to form two sets of sheathed thermocouple wires;

[0057] S5: loading the double-hole ceramic tube 3 and adjusting the posture of the double-hole ceramic tube 3;

[0058] S6: Pass the two sets of sheath thermocouple wires in step S4 through the double-hole ceramic tube 3 in step S5;

[0059] S7: welding the two groups of sheath thermocouple wires in step S6 close to one end of the double-hole ceramic tube 3 to complete the thermocouple sheath.

[0060] The beneficial effects of the present invention are: the thermocouple wire is sleeved on the single-hole ceramic tube and the double-hole ceramic tube in an automated manner, and the two thermocouple wires after being sleeved on the double-hole ceramic tube are welded. Compared with the manual sleeve method in the prior art, the sleeve efficiency is high, and the thermocouples produced by the automated method have higher consistency.

[0061] Preferably, step S1 comprises:

[0062] S11: feeding the thermocouple wire 1 by unwinding equipment or manually;

[0063] S12: straightening the thermocouple wire 1 by a straightening device;

[0064] S13: moving the straightened thermocouple wire 1 to a preset length through a servo device;

[0065] S14: Cutting the thermocouple wire 1 in step S13 by a cutting device.

[0066] The beneficial effect of adopting the above preferred solution is that the feeding, straightening and cutting of the thermocouple wire are realized through the unwinding device, the straightening device, the servo device and the cutting device, which is conducive to improving the automation level of the pre-sleeve preparation stage.

[0067] Preferably, step S2 comprises:

[0068] S21: Arranging the single-hole ceramic tubes 2 by a vibration plate so that a plurality of the single-hole ceramic tubes 2 are output along a preset direction;

[0069] S22: transporting a preset number of the single-hole ceramic tubes 2 to the perforating station by means of a transport device.

[0070] The beneficial effects of adopting the above-mentioned preferred scheme are: the vibration plate is conducive to arranging and outputting multiple disordered single-hole ceramic tubes in a preset direction, and the handling equipment is conducive to transporting multiple single-hole ceramic tubes to be sleeved on the thermocouple wire to the perforation station to realize sleeve, which replaces manual operation and improves the degree of automation.

[0071] Preferably, Figure 2 As shown, step S3 includes:

[0072] S31: Compressing the plurality of single-hole ceramic tubes 2 on the perforating station by a profiling device so that the plurality of single-hole ceramic tubes 2 are coaxially arranged;

[0073] S32: The cut thermocouple wire 1 is displaced to pass through a plurality of coaxially arranged single-hole ceramic tubes 2 by a servo device to form a single set of sheathed thermocouple wires.

[0074] The beneficial effects of adopting the above-mentioned preferred scheme are: the profiling equipment is conducive to pressing multiple single-hole ceramic tubes and placing them coaxially on the punching station, and the servo equipment is conducive to driving the thermocouple wire to move on the punching station and pass through multiple single-hole ceramic tubes, replacing the manual punching operation and improving the degree of automation.

[0075] Preferably, step S5 comprises:

[0076] S51: Arranging the double-hole ceramic tubes 3 by a vibration plate so that a plurality of the double-hole ceramic tubes 3 are output along a preset direction;

[0077] S52: transporting one of the double-hole ceramic tubes 3 into the range of the visual recognition device by means of a transport device;

[0078] S53: photographing and identifying the hole positions of the double-hole ceramic tube 3 by the visual recognition device;

[0079] S54: adjusting the two hole positions of the double-hole ceramic tube 3 to correspond to the two groups of sheath thermocouple wires through a servo rotating device.

[0080] The beneficial effects of adopting the above-mentioned preferred scheme are: the vibration plate is conducive to arranging and outputting multiple disordered double-hole ceramic tubes in a preset direction, the handling equipment combined with the visual recognition equipment is conducive to identifying the posture of the double-hole ceramic tube by taking pictures, and the servo rotation equipment is conducive to adjusting the double-hole posture of the double-hole ceramic tube to correspond to the two groups of sheath thermocouple wires, which is convenient for the two groups of sheath thermocouple wires to pass through the double-hole ceramic tube in the subsequent steps, replacing manual loading and identification operations and improving the degree of automation.

[0081] Preferably, Figure 3 As shown, step S6 includes:

[0082] S61: Using a servo device, the distance between the two sets of thermocouple wires of the sleeve is shifted to correspond to the distance between the two hole positions of the double-hole ceramic tube 3;

[0083] S62: The two sets of sheath thermocouple wires are moved to two hole positions passing through the double-hole ceramic tube 3 by means of a servo device.

[0084] The beneficial effect of adopting the above preferred solution is that the servo device is conducive to driving the displacement of the two sets of sheath thermocouple wires and passing through the double-hole ceramic tube, replacing the manual perforation operation and improving the degree of automation.

[0085] Preferably, Figure 4 As shown, step S7 includes:

[0086] S71: transporting the two sets of sheath thermocouple wires that have passed through the double-hole ceramic tube 3 in step S62 to a welding station by means of a transport device;

[0087] S72: clamping and fixing the two sets of sheath thermocouple wires in step S71 close to one end of the double-hole ceramic tube 3 by a clamping device;

[0088] S73: cutting one end of the two sets of thermocouple wires in the sheath that are clamped and fixed in step S72 by a cutting device;

[0089] S74: welding the cut ends of the two sets of sheath thermocouple wires in step S73 by using a welding device.

[0090] The beneficial effects of adopting the above preferred scheme are: the handling equipment is conducive to replacing manual handling, and the clamping equipment, cutting equipment and welding equipment are conducive to fixing, cutting and welding the ends of two sets of sheath thermocouple wires, replacing manual operation and improving the degree of automation.

[0091] Among them, it should be noted that: in the technical solution of the present invention, the unwinding equipment, straightening equipment, servo equipment, cutting equipment, vibration plate, handling equipment, profiling equipment, visual recognition equipment, servo rotation equipment, clamping equipment and welding equipment are all existing technologies, so their specific structures are not described.

[0092] The present invention is described below by two embodiments:

[0093] Embodiment 1.

[0094] (1) Coil feeding: The thermocouple wire is fed through a coil and installed on an unwinder, which provides resistance to maintain the consistency of the thermocouple tension;

[0095] (2) Straightening and cutting: After the thermocouple wire is straightened by the straightener, it is moved to the set length by the servo device, and then the cutting device cuts the thermocouple wire;

[0096] (3) Vibrating plate feeding (single hole): The single-hole ceramic tube is fed through the vibrating plate, and multiple single-hole ceramic tubes are output in the specified direction;

[0097] (4) Arrangement and combination: Arrange multiple single-hole ceramic tubes transported by the vibration plate into a row in a certain direction and transport them to the perforation station through a handling device;

[0098] (5) Passing through a single-hole ceramic tube: The single-hole ceramic tube is pressed by a profiling device. The profiling device is generally set in the form of two semicircles to achieve the concentricity of the single-hole ceramic tube. Then the servo device passes the straightened thermocouple wire through multiple single-hole ceramic tubes;

[0099] (6) Vibrating plate feeding (double holes): The double-hole ceramic tube is fed through the vibrating plate and output in the specified direction;

[0100] (7) CCD posture adjustment: The handling device carries the double-hole ceramic tube to the range of the CCD camera, takes pictures with the CCD camera to identify the double-hole posture, and adjusts the posture of the double-hole ceramic tube through the servo rotation device;

[0101] (8) Passing through a double-hole ceramic tube: two thermocouple wires with single-hole ceramic tubes are placed side by side, and the ends of the thermocouple wires are restricted to a state consistent with the double-hole spacing through the end material handling equipment. The servo equipment drives the double-hole ceramic tube to pass through the two thermocouple wires to achieve passing through the double-hole ceramic tube;

[0102] (9) Welding: The handling equipment carries the thermocouple wire to the welding station, the clamping equipment merges the ends of the thermocouple wire, the cutting equipment cuts it to ensure the consistency of the ends, and then the welding head of the butt welding machine contacts the ends of the thermocouple wire to achieve welding;

[0103] (10) Unloading: The handling equipment transports the thermocouple wire to the unloading port to complete the automatic casing.

[0104] Embodiment 2.

[0105] (1) Manual thermocouple insertion: Manually insert the cut thermocouple wire through a perforator;

[0106] (2) Straightening: After the thermocouple wire is straightened by the straightener, it is moved to the measuring station by the servo device;

[0107] (3) Length inspection: The length of the thermocouple wire is calculated by sensing with a photoelectric sensor and coordinating with the displacement length of the servo device. If the length is unqualified, it is discharged from the unqualified port;

[0108] (4) Vibration plate feeding (single hole): The single-hole ceramic tube is fed through the vibration plate, and multiple single-hole ceramic tubes are output in the specified direction;

[0109] (5) Arrangement and combination: Arrange multiple single-hole ceramic tubes transported by the vibration plate into a row in a certain direction and transport them to the perforation station through a handling device;

[0110] (6) Passing through a single-hole ceramic tube: The single-hole ceramic tube is pressed by a profiling device. The profiling device is generally set in the form of two semicircles to achieve the concentricity of the single-hole ceramic tube. Then the servo device passes the straightened thermocouple wire through multiple single-hole ceramic tubes;

[0111] (7) Vibrating plate feeding (double holes): The double-hole ceramic tube is fed through the vibrating plate and output in the specified direction;

[0112] (8) CCD posture adjustment: The handling device carries the double-hole ceramic tube to the range of the CCD camera, takes pictures with the CCD camera to identify the double-hole posture, and adjusts the posture of the double-hole ceramic tube through the servo rotation device;

[0113] (9) Passing through a double-hole ceramic tube: two thermocouple wires with single-hole ceramic tubes are placed side by side, and the ends of the thermocouple wires are restricted to a state consistent with the double-hole spacing through the end material handling equipment. The servo equipment drives the double-hole ceramic tube to pass through the two thermocouple wires to achieve passing through the double-hole ceramic tube;

[0114] (10) Welding: The handling equipment carries the thermocouple wire to the welding station, the clamping equipment merges the ends of the thermocouple wire, the cutting equipment cuts it to ensure the consistency of the ends, and then the welding head of the butt welding machine contacts the ends of the thermocouple wire to achieve welding;

[0115] (11) Unloading: The handling equipment transports the thermocouple wire to the unloading port to complete the automatic casing.

[0116] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0117] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0118] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0121] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A thermocouple automatic casing process, characterized in that: The following steps are involved: S1: feeding, straightening and cutting the thermocouple wire (1) into a fixed length; S2: loading the single-hole ceramic tube (2), and moving a plurality of the single-hole ceramic tubes (2) to a perforation station; S3: passing the thermocouple wire (1) in step S1 through the plurality of single-hole ceramic tubes (2) in step S2 to form a single set of sheathed thermocouple wires; S4: repeat steps S1-S3 to form two sets of sheathed thermocouple wires; S5: loading the double-hole ceramic tube (3) and adjusting the posture of the double-hole ceramic tube (3); S6: Passing the two sets of sheathed thermocouple wires in step S4 through the double-hole ceramic tube (3) in step S5; S7: welding the two groups of sheath thermocouple wires in step S6 close to one end of the double-hole ceramic tube (3) to complete the thermocouple sheath.

2. A thermocouple automatic casing process according to claim 1, characterized in that: Step S1 includes: S11: feeding the thermocouple wire (1) by unwinding equipment or manually; S12: straightening the thermocouple wire (1) by means of a straightening device; S13: displacing the straightened thermocouple wire (1) to a preset length by a servo device; S14: Cutting the thermocouple wire (1) in step S13 by a cutting device.

3. A thermocouple automatic casing process according to claim 1, characterized in that: Step S2 includes: S21: Arranging the single-hole ceramic tubes (2) by means of a vibration plate, so that a plurality of the single-hole ceramic tubes (2) are output along a preset direction; S22: transporting a preset number of the single-hole ceramic tubes (2) to the perforating station by means of a transport device.

4. A thermocouple automatic casing process according to claim 1, characterized in that: Step S3 includes: S31: pressing the plurality of single-hole ceramic tubes (2) on the perforating station by means of a profiling device so that the plurality of single-hole ceramic tubes (2) are coaxially arranged; S32: The cut thermocouple wire (1) is displaced to pass through a plurality of coaxially arranged single-hole ceramic tubes (2) by a servo device to form a single set of sheathed thermocouple wires.

5. The automatic thermocouple casing process according to claim 1, characterized in that: Step S5 includes: S51: Arranging the double-hole ceramic tubes (3) by a vibration plate so that a plurality of the double-hole ceramic tubes (3) are output along a preset direction; S52: transporting one of the double-hole ceramic tubes (3) into the range of the visual recognition device by means of a transport device; S53: photographing and identifying the hole positions of the double-hole ceramic tube (3) by means of the visual recognition device; S54: adjusting the two hole positions of the double-hole ceramic tube (3) to correspond to the two groups of sheath thermocouple wires through a servo rotating device.

6. A thermocouple automatic casing process according to claim 1, characterized in that: Step S6 includes: S61: Using a servo device, the distance between the two sets of thermocouple wires of the sheath is shifted to correspond to the distance between the two hole positions of the double-hole ceramic tube (3); S62: Using a servo device, two sets of sheath thermocouple wires are moved to two hole positions passing through the double-hole ceramic tube (3).

7. A thermocouple automatic casing process according to claim 6, characterized in that: Step S7 includes: S71: transporting the two groups of sheath thermocouple wires that have passed through the double-hole ceramic tube (3) in step S62 to a welding station by means of a transport device; S72: clamping and fixing the two sets of sheath thermocouple wires in step S71 close to one end of the double-hole ceramic tube (3) by a clamping device; S73: cutting one end of the two sets of thermocouple wires in the sheath that are clamped and fixed in step S72 by a cutting device; S74: welding the cut ends of the two sets of sheath thermocouple wires in step S73 by using a welding device.

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