A wire-wound temperature-sensing element multi-wire parallel winding device and method

Abstract

This invention provides a multi-wire parallel winding device and method for winding wire-wound temperature sensing elements, used for winding single-redundant or double-redundant temperature sensing elements. It comprises three parts: an adjustable tilt angle module, a wire winding drive module, and a synchronous limiting module. The adjustable tilt angle module is used to adjust the wire winding pitch; the wire winding drive module is used to realize the wire winding action; and the synchronous limiting module is used to maintain the resistance wire in a vertically downward constant tension state, preventing it from rotating or swaying. This achieves precise control of the resistance wire winding and adaptability to different resistance wire diameters and winding densities, greatly improving the manufacturing efficiency and reliability of multi-variety, small-batch wire-wound temperature sensing elements.

Description

Technical Field

[0001] This invention belongs to the field of aviation equipment technology, and in particular relates to a multi-wire parallel winding device and method for a wire-wound temperature sensing element. Background Technology

[0002] Temperature sensors, as one of the core components for environmental sensing and condition monitoring in aviation equipment, are widely used in critical scenarios such as engine air intakes, electromechanical system thermal management, and cabin environmental control. Among them, wire-wound temperature sensors are the preferred solution for high-temperature and high-precision temperature measurement in the aviation field due to their advantages such as high accuracy (±0.1℃~±0.5℃), good long-term stability (≤0.1℃ / year), fast response (time constant ≤0.5s), and resistance to extreme environments (-200℃~850℃). Their core sensing element is an ultra-fine resistance wire with a diameter of 0.02~0.05mm, which is precisely wound into a coil with a specific number of turns, wire diameter, and geometry. The resistance value of the coil has a linear relationship with temperature, directly affecting the measurement accuracy and reliability of the sensor.

[0003] Currently, the winding process for wire-wound temperature sensing elements mainly employs two methods: single-wire winding or multi-wire parallel winding. However, for the precision winding requirements of ultra-fine resistance wires with diameters of 0.02–0.05 mm, existing technologies face significant bottlenecks, specifically: (1) Difficulty in controlling the tension of multi-wire winding: The small differences in material and diameter of multiple resistance wires or uneven tension fluctuations can easily lead to slack or breakage during the winding process, resulting in inconsistent spacing between local turns, which directly affects the uniformity of the resistance value and fails to meet the sensor's requirement for high consistency.

[0004] (2) Poor consistency of winding arrangement: When multiple lines are parallel, the arrangement of each line on the skeleton is easily affected by the winding angle, the swing of the resistance wire, etc., resulting in crossover, overlap or local sparseness, which leads to uneven insulation layer thickness during subsequent packaging, causing leakage current or insulation failure risk.

[0005] (3) Insufficient adaptability: Different models of aviation temperature sensors have large differences in parameters such as the diameter and winding pitch of the resistance wire. The existing tooling has a long adjustment cycle and it is difficult to meet the needs of flexible production of multiple varieties and small batches. Summary of the Invention

[0006] The technical problem solved by this invention: The purpose of this invention is to provide a highly reliable and low-cost multi-wire parallel winding device and method for resistance wires, which realizes precise control of resistance wire winding and adaptability to different resistance wire diameters and winding densities, greatly improving the manufacturing efficiency and reliability of multi-variety small-batch wire-wound temperature sensing elements.

[0007] The present invention solves the above-mentioned technical problems by adopting the following technical solutions: This invention provides a multi-wire parallel winding device for a wire-wound temperature sensing element. The device is used for winding single-redundant or double-redundant temperature sensing elements. It is characterized by comprising three parts: an adjustable tilt angle module, a wire winding drive module, and a synchronous limit module. The adjustable tilt module is used to adjust the wire winding pitch; The wire winding drive module is used to realize the wire winding action; The synchronous limiting module is used to keep the resistance wire in a vertically downward constant tension state, and prevent it from rotating or swinging.

[0008] Furthermore, The adjustable tilt module consists of a precision platform 11, a knob 12, and an adjustable tilt platform 13. The precision platform 11 is used to provide a base for the wire winding platform, the adjustable tilt platform 13 is used to fix the wire winding drive module, and the knob 12 is used to adjust the tilt angle of the adjustable tilt platform 13.

[0009] Furthermore, The wire winding drive module consists of a column 21, a motor mounting bracket 22, a servo motor 23A, a three-jaw chuck 24, a wire divider 25, weights 26, resistance wires 27, and a winding frame 28. The column 21 is fixed on the adjustable tilt platform 13. The top of the column 21 is fixed with a motor mounting bracket 22. The servo motor 23A is mounted on the motor mounting bracket 22. The three-jaw chuck 24 is fixed on the drive shaft of the servo motor 23A. The winding frame 28 is fixed on the three-jaw chuck 24. The folded ends of the resistance wire are fixed side by side on the winding frame 28. The free end of the resistance wire passes through the splitter 25 and is connected to the weight 26.

[0010] Furthermore, The synchronous limiting module is used to fix the splitter 25 in the wire winding drive module and to synchronously limit the weight 26 in the wire winding drive module, so as to keep the resistance wire in a vertically downward constant tension state and prevent it from rotating or swinging.

[0011] Furthermore, The synchronous limiting module consists of a mounting frame 31, a guide rod 32, a transmission screw 33, a limiting frame 34, a reel group 35A, a reel group 35B, a constant tension unwinder 36, and a servo motor 23B. The mounting bracket 31 is fixed on the precision platform 11. The upper end of the mounting bracket 31 is provided with two sets of mounting holes. One set of mounting holes is used to install the guide rod 32, and the other set of mounting holes is used to install the transmission screw 33. A transmission threaded hole and a light hole are opened on the body of the limit frame. The transmission screw 33 passes through the transmission threaded hole and the guide rod 32 passes through the light hole. The upper and lower sides of the limit frame 34 are respectively arranged with a sheave group 35A and a sheave group 35B. The resistance wire passes around the sheave group 35A and the sheave group 35B, with one end being the folded end of the resistance wire and the other end being the free end. Servo motor 23B is fixed on mounting bracket 31 and is used to drive the transmission screw 33 to rotate.

[0012] Furthermore, The reel groups 35A and 35B are respectively equipped with constant tension unwinders 36, which are used to ensure that the resistance wire has a constant tension during the winding process.

[0013] Furthermore, The limiting frame 34 is provided with a groove structure, which serves as a motion guide for the weight 26 and is used to limit the rotation and swing of the weight 26, thereby preventing the resistance wires from swinging and getting tangled and the resistance wires from breaking on their own.

[0014] The present invention also provides a method for multi-wire parallel winding of a wire-wound temperature sensing element, the method being implemented using the aforementioned device, the method comprising: The winding frame 28 is installed on the adjustable tilt platform 13. A resistance wire of a preset length is pulled out from the reel group 35A and the reel group 35B and folded in half. One end of the folded resistance wire is fixed on the winding frame 28, and the other end passes through the wire splitter 25 and is connected to the weight 26. Driven by the servo motor 23A on the adjustable tilt platform 13, the resistance wire is wound on the winding frame 28, and the free end of the resistance wire moves forward in the horizontal direction with the weight 26. The winding density of the resistance wire is determined by the tilt angle of the adjustable tilt platform 13. Driven by the servo motor 23B, the horizontal movement speed of the limit frame 34 is consistent with the axial movement speed of the resistance wire on the winding frame 28, ensuring that the free end of the resistance wire always maintains a constant vertical downward tension under the action of the weight 26, and will not cause tension fluctuation due to the oblique pulling force or friction of the splitter 25.

[0015] The beneficial effects of the technical solution of this invention: (1) It can achieve constant tension control in the multi-wire winding process, avoiding the phenomenon of resistance wire loosening and breakage during the winding process.

[0016] (2) It can ensure that the resistance wire is neatly wound and arranged, avoiding phenomena such as crossing, overlapping or local sparseness.

[0017] (3) It can be adapted to skeletons of different diameters and resistance wires of different diameters and lengths to meet the needs of flexible production of multiple varieties and small batches. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the device structure of the present invention; Figure 2 This is a schematic diagram of the adjustable tilt angle module structure of the present invention; Figure 3 This is a schematic diagram of the wire winding drive module of the present invention installed on the adjustable tilt module; Figure 4 This is a schematic diagram showing the details of the multi-wire parallel winding of the present invention (including the installation of the splitter and the limiting bracket); Figure 5 This is a schematic diagram of the splitter structure of the present invention; Figure 6 This is a schematic diagram of the synchronous limiting module of the present invention; Figure 7 The images show the front view and the oblique view of the positional relationship between the weights and the reel assembly on the limiting frame of the present invention. Figure 8 This is a schematic diagram of the limiting frame structure of the present invention. In the picture: 1- Adjustable tilt module: 11-Precision platform, 12-Knob, 13-Adjustable tilt platform; 2-Wire winding drive module: 21-Column, 22-Motor mounting bracket, 23A servo motor, 24-Three-jaw chuck, 25-Diverter, 26-Weight, 27-Resistance wire, 28-Wound frame; 3-Synchronous Limit Module: 31-Mounting frame, 32-Guide rod, 33-Transmitting screw, 34-Limiting frame, 35A-Sheave assembly, 35B-Sheave assembly, 36A-Constant tension unwinder, 36B-Constant tension unwinder, 23B-Servo motor. Detailed Implementation

[0019] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] This invention provides a device and method for winding equidistant, uniformly stretched multi-wire parallel wires into a wire-wound temperature sensing element, used for winding single-redundant or double-redundant temperature sensing elements. (See reference...) Figure 1-8 It includes three parts: an adjustable tilt module, a wire winding drive module, and a synchronous limit module.

[0021] The tilt angle of the adjustable tilt module is adjusted by rotating knob 13. Servo motor 23A and three-jaw chuck 24 are both fixed on the adjustable tilt platform 13. Resistance wires of a certain length are wound from reel groups 35A and 35B, forming four wires. One end of each folded wire is fixed side-by-side to the winding frame 28. The other ends of the four wires pass through the wire splitter 25, with two wires connected to reel groups 35A and 35B respectively, and the remaining two wires connected to the weights 26. The winding frame 28 is held by the three-jaw chuck, and servo motor 23A drives the three-jaw chuck 24 to rotate, achieving equidistant winding of the resistance wires 27 on the frame 28. A synchronization limit module is set on the precision platform. The synchronization limit module includes a limit frame 34. The limit frame 34 is equipped with a wire splitter 25, a wire reel group 35A, and a wire reel group 35B from top to bottom. Driven by another servo motor 23B at a certain speed, the limit frame 34, the wire splitter 25, and the wire reel group 35 can achieve synchronous movement in the horizontal direction with the resistance wire 27 of the suspended weight 26. The limit frame 34 is provided with a groove structure to limit the rotation and swing of the weight 26.

[0022] It should be noted that during the winding process of the resistance wire, the winding density of the resistance wire is determined by the installation tilt angle. Under the action of the gravity of the weight 26, the two wires at the free end of the resistance wire always maintain a constant tension state of vertical downward, while the weight 26 is restricted in the groove of the limit frame 34, thereby avoiding the resistance wire from swinging and knotting and the resistance wire from breaking on its own. The end of the resistance wire connected to the reel group 35 always maintains a constant tension state under the action of the constant tension unwinder.

[0023] The adjustable tilt module is used to provide a wire winding platform and has a precise control function for the wire winding pitch; the adjustable tilt module consists of a precision platform 11, a knob 12, and an adjustable tilt platform 13, wherein the precision platform 11 is used to provide a base for the wire winding platform, and the adjustable tilt platform 13 is used to fix the wire winding drive module.

[0024] The wire winding drive module, as the main wire winding module, is used to fix the wire skeleton and drive it to rotate to perform the wire winding action. The wire winding drive module consists of a column 21, a motor mounting bracket 22, a servo motor 23A, a three-jaw chuck 24, a wire divider 25, a weight 26, a resistance wire 27, and a winding skeleton 28.

[0025] One end of the four-wire resistance wire is folded and fixed side by side on the winding frame 28. The other end of the four wires passes through the wire splitter 25. Two of the wires are connected to the reel group 35A and the reel group 35B respectively, and the remaining two wires are connected to the weight 26.

[0026] Driven by a motor on the adjustable tilt platform 13, the resistance wire can be wound on the frame, while the resistance wire of the suspended weight 26 moves forward in the horizontal direction.

[0027] The limit frame 34 is equipped with a wire splitter 25, a wire reel group 35A, and a wire reel group 35B in sequence from top to bottom. Driven by another servo motor at a certain speed, the limit frame 34, the wire splitter 25, the wire reel group 35A, and the wire reel group 35B can move synchronously with the resistance wire of the suspended weight 26 in the horizontal direction.

[0028] The splitter 25 is mainly used to achieve equidistant spacing of the four wires. There is no oblique pulling force on the free ends of the four wires of the resistance wire. Under the action of the weight 26, the resistance wire always maintains a constant tension state of vertical downward, and there will be no tension fluctuation caused by the oblique pulling force or friction of the splitter 25.

[0029] The limiting frame 34 is provided with a groove structure to limit the rotation and swing of the weight 26, thereby preventing the resistance wires from swinging and getting tangled and the resistance wires from breaking on their own.

[0030] Adjust the adjustable tilt platform 13 to different tilt angles and change the specifications of the splitter 25. At the same time, adjust the horizontal movement speed of the limit frame 34 to adapt to the winding requirements of different resistance wire diameters and different winding densities.

[0031] Example In practical use, the diameter, length, spacing, motor speed, and other parameters of the winding resistance wire are determined according to the winding requirements.

[0032] The insulated winding frame 28 is fixed on a three-jaw chuck.

[0033] The angle of the adjustable tilt platform 13 is determined according to the winding spacing, and the adjustable tilt platform 13 is adjusted to the specified angle by rotating the adjustment knob.

[0034] The reel sets 35A and 35B are pre-fixed on the limiting frame 34. According to the required length of the resistance wire, a certain length of resistance wire is wound from the reel sets 35A and 35B, which is more than half of the required total length. The ends of the two resistance wires are pre-fixed to prevent the resistance wires from tangling, crossing, or knotting.

[0035] Fold the two wound resistance wires into four wires at the required positions, and fix the two folded positions of the four wires tightly side by side at the specified positions of the winding frame 28.

[0036] Loosen the ends of the two pre-fixed resistance wires, connect the ends of the two resistance wires to the weight 26, place the four wires into the four holes of the wire splitter 25, and place the weight 26 into the groove of the limit frame 34.

[0037] Adjust the limit frame 34, the wire splitter 25, the wire reel group 35A, and the wire reel group 35B to the appropriate positions. Both the wire reel group 35A and the wire reel group 35B are equipped with constant tension unwinders 36 to ensure that the wire reel group 35 is not affected by factors such as rotational inertia and friction when releasing the resistance wire, so that all four wires of the resistance wire are in a pre-tight constant tension state, and the resistance wire with the suspended weight 26 is taut in the vertical downward direction.

[0038] The positions of the distributor 25, the reel group 35A, and the reel group 35B are fixed.

[0039] Servo motors 23A and 23B are started synchronously at a predetermined, relatively slow speed.

[0040] Driven by the servo motor 23A, the resistance wire is wound on the frame, while the resistance wire of the suspended weight 26 moves forward in the horizontal direction.

[0041] Driven by servo motor 23B, limit frame 34, distributor 25, reel group 35A, and reel group 35B all move forward in the horizontal direction.

[0042] The moving speed of the splitter 25 is the same as the moving speed of the resistance wire of the suspended weight 26. The splitter 25 exerts no oblique pulling force on the free ends of the four wires of the resistance wire. Under the action of the weight 26, the resistance wire always maintains a constant tension state of vertical downward, and there will be no tension fluctuation caused by the oblique pulling force or friction of the splitter 25.

[0043] The limiting frame 34 is provided with a groove structure to limit the rotation and swing of the weight 26, thereby preventing the resistance wires from swinging and getting tangled and the resistance wires from breaking on their own.

[0044] The present invention provides the following technical features: 1) It enables constant tension control during multi-wire winding, preventing resistance wire slack and breakage during the winding process. 2) It ensures neat winding of the resistance wires, avoiding crossovers, overlaps, or localized sparseness. 3) It is adaptable to skeletons of different diameters and resistance wires of different diameters and lengths, meeting the needs of flexible production in small batches with diverse product types.

[0045] The present invention provides a multi-wire parallel winding equipment for wire-wound temperature sensing elements suitable for aviation temperature sensors. Through key technologies such as multi-wire synchronous drive, balanced tension control and precision wire routing guidance, it solves problems such as uneven tension and disordered arrangement in multi-wire winding, improves production efficiency and product consistency, and meets the urgent needs of the aviation field for high-precision and high-reliability temperature sensors.

Claims

1. A multi-wire parallel winding device for a wire-wound temperature sensing element, characterized in that, The device is used for winding single-redundant or dual-redundant temperature sensing elements, and is characterized by comprising three parts: an adjustable tilt angle module, a wire winding drive module, and a synchronous limiting module. The adjustable tilt module is used to adjust the wire winding pitch; The wire winding drive module is used to realize the wire winding action; The synchronous limiting module is used to keep the resistance wire in a vertically downward constant tension state, and prevent it from rotating or swinging. The adjustable tilt module consists of a precision platform (11), a knob (12), and an adjustable tilt platform (13). The precision platform (11) is used to provide a base for the wire winding platform, the adjustable tilt platform (13) is used to fix the wire winding drive module, and the knob (12) is used to adjust the tilt angle of the adjustable tilt platform (13). The wire winding drive module consists of a column (21), a motor mounting bracket (22), a first servo motor (23A), a three-jaw chuck (24), a wire divider (25), weights (26), resistance wires (27), and a winding frame (28); The column (21) is fixed on the adjustable tilt platform (13), the top of the column (21) is fixed with a motor mounting bracket (22), the first servo motor (23A) is mounted on the motor mounting bracket (22), the three-jaw chuck (24) is fixed on the drive shaft of the first servo motor (23A), the winding frame (28) is fixed on the three-jaw chuck (24), the folded ends of the resistance wire are fixed side by side on the winding frame (28), and the free end of the resistance wire passes through the splitter (25) and is connected to the weight (26); The synchronous limiting module consists of a mounting frame (31), a guide rod (32), a transmission screw (33), a limiting frame (34), a first spool group (35A), a second spool group (35B), a constant tension unwinder (36), and a second servo motor (23B). The mounting bracket (31) is fixed on the precision platform (11). The upper end of the mounting bracket (31) is provided with two sets of mounting holes. One set of mounting holes is used to install the guide rod (32), and the other set of mounting holes is used to install the transmission screw (33). A transmission threaded hole and a light hole are opened on the body of the limit frame. The transmission screw (33) passes through the transmission threaded hole and the guide rod (32) passes through the light hole. The first wire wheel group (35A) and the second wire wheel group (35B) are arranged on the upper and lower sides of the limit frame (34). The resistance wire passes around the first wire wheel group (35A) and the second wire wheel group (35B). One end is the folded end of the resistance wire and the other end is the free end. The second servo motor (23B) is fixed on the mounting bracket (31) and is used to drive the transmission screw (33) to rotate.

2. The multi-wire parallel winding device for a wire-wound temperature sensing element according to claim 1, characterized in that, The synchronous limiting module is used to fix the wire splitter (25) in the wire winding drive module and synchronously limit the weight (26) in the wire winding drive module to keep the resistance wire in a vertically downward constant tension state and prevent it from rotating or swinging.

3. The multi-wire parallel winding device for a wire-wound temperature sensing element according to claim 1, characterized in that, The first spool (35A) and the second spool (35B) are respectively equipped with constant tension unwinders (36), which are used to ensure that the resistance wire has a constant tension during the winding process.

4. The multi-wire parallel winding device for a wire-wound temperature sensing element according to claim 1, characterized in that, The limiting frame (34) is provided with a groove structure, which serves as a motion guide for the weight and is used to limit the rotation and swing of the weight (26), thereby preventing the resistance wires from swinging and getting tangled and the resistance wires from breaking on their own.

5. A method for multi-wire parallel winding of a wire-wound temperature sensing element, characterized in that, The method is implemented using the apparatus described in any one of claims 1-4, and the method includes: The winding frame (28) is installed on the adjustable tilt platform (13). A resistance wire of a preset length is pulled out from the first wire reel group (35A) and the second wire reel group (35B) and folded in half. One end of the folded resistance wire is fixed on the winding frame (28), and the other end passes through the wire splitter (25) and is connected to the weight (26). Driven by the first servo motor (23A) on the adjustable tilt platform (13), the resistance wire is wound on the winding frame (28), and the resistance wire at the free end moves forward in the horizontal direction with the weight (26). The winding density of the resistance wire is determined by the tilt angle of the adjustable tilt platform (13). Driven by the second servo motor (23B), the horizontal movement speed of the limit frame (34) is consistent with the axial movement speed of the resistance wire on the winding frame (28), ensuring that the free end of the resistance wire always maintains a constant tension state of vertical downward under the action of the weight (26), and will not cause tension fluctuation due to the oblique pulling force or friction of the splitter (25).

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