Power-type zero-power-consumption magneto-dependent sensor and production process thereof

Abstract

The invention relates to a power-type zero-power-consumption magneto-dependent sensor and a production process thereof, and relates to the technical field of sensors. An alloy wire, a framework and a coil are arranged in the shell, a groove is formed in the framework, the alloy wire penetrates through the groove, the coil is wound on the framework, leads are arranged at two ends of the framework, and the leads are connected with the ends of the coil. By using the sensor, the encoder has the effect of saving the function of multi-turn counting without a battery.

Description

Technical Field

[0001] The present application relates to the field of sensors, and in particular to a power-type zero-power magnetic sensitive sensor and a production process thereof. Background Art

[0002] At present, in the application scenario of multi-turn absolute encoder, it is usually necessary to increase the battery power supply to keep the encoder saving multi-turn information. If the battery voltage decreases, the battery needs to be replaced as maintenance of the multi-turn absolute encoder, otherwise the multi-turn information will be lost.

[0003] Therefore, during use, the battery needs to be replaced frequently, which causes inconvenience in operation, so it needs to be improved. Summary of the invention

[0004] In order to improve the problem that in the application scenario of a multi-turn absolute encoder, batteries need to be constantly replaced for power supply, resulting in inconvenient operation, the present application provides a power-type zero-power magnetic sensor and a production process thereof.

[0005] The present application provides a power-type zero-power magnetic sensor and its production process using the following technical solutions: A power-type zero-power consumption magnetic sensor comprises a shell, wherein an alloy wire, a skeleton and a coil are arranged in the shell, the skeleton is provided with a groove, the alloy wire is passed through the groove, the coil is wound on the skeleton, lead wires are arranged at both ends of the skeleton, and the lead wires are connected to the ends of the coil.

[0006] By adopting the above technical solution, when in use, the alloy wire senses the change of the magnetic field, and the coil detects the induced voltage pulse generated by the change of the magnetic field. When the detected magnet and the sensor move relative to each other, the sensitive alloy wire is subjected to the external magnetic field, and its inner core magnetization jumps, thereby generating an induced voltage pulse in the coil. Therefore, there is no need to add batteries, and the power-type zero-power magnetic sensor converts the change of the magnetic field into electrical energy, thereby enabling the encoder to store multi-turn counts without batteries.

[0007] The present application also provides a production process of a power-type zero-power consumption magnetic sensor, comprising the following steps: S1. heating the alloy wire, and inert gas is used during the heating process to prevent the alloy wire from being oxidized; S2, cooling the heated alloy wire with ice water for subsequent processing; S3, using a motor to wind the alloy wire onto an aluminum alloy drum; S4. The alloy wire is drawn into flexible and uniform Wiegand wire through a wire twisting machine.

[0008] Optionally, in S1, the alloy wire is heated by a high-temperature furnace, wherein the high-temperature furnace comprises a tank body, the interior of the tank body is hollow, a mounting hole is opened on the top wall of the tank body, an air inlet pipe is connected to the side wall of the tank body, a moving component is provided on the top wall of the tank body, the moving component is connected to a clamping component for clamping the alloy wire, and the moving component is used to drive the clamping component to penetrate the mounting hole.

[0009] By adopting the above technical solution, during production, the alloy wire to be processed is first fixed by the clamping assembly so that the alloy wire is connected to the moving assembly, and then the moving assembly is started to drive the alloy wire through the installation hole and completely inserted into the high-temperature tank body. At this time, inert gas is continuously introduced into the tank body through the air inlet pipe to maintain the inert atmosphere in the furnace, help remove the active gas that may exist in the furnace, and prevent the alloy wire from reacting with active gases such as oxygen at high temperature, thereby protecting the alloy wire and avoiding oxidation and volatilization of alloy elements.

[0010] Optionally, the high-temperature furnace also includes three baffles, a rotating rod is coaxially penetrated through the tank body, the rotating rod is rotatably connected to the tank body, one side of the baffle is fixed to the rotating rod, and a plurality of the baffles are radially arranged with the mounting rod as the center, and the plurality of the baffles are used to divide the tank body into three heating areas evenly, and the mounting hole and the air inlet pipe are both connected to the same heating area.

[0011] By adopting the above technical solution, in the initial state, the rotating rod drives the baffle to be located on both sides of the mounting hole, so that the mounting hole and the air inlet pipe are both connected to the same heating area. When the alloy wire passes through the mounting hole and enters the heating area, the heat in the heating area preheats the alloy wire, which can reduce the heating time of the alloy wire and help the alloy wire quickly reach and maintain the required high temperature. Then the rotating rod is driven to rotate, so that the baffle moves with the rotating rod as the axis. During this process, the alloy wire is pulled out of the tank body by the moving assembly, so that the alloy wire does not affect the movement of the baffle.

[0012] When one of the baffles passes over the mounting hole, the adjacent heating area reaches the mounting hole and the air inlet pipe. After the alloy wire is inserted into the tank again, it reaches the adjacent heating area. This heating area has a higher temperature than the previous one, so the alloy wire can be heated and quickly heated to a predetermined temperature. When the alloy wire is heated, the rotating rod is driven again to drive the baffle to move, so that the next heating area is connected to the mounting hole. After the alloy wire is inserted into the heating area, the temperature of the heating area is the same as the temperature of the initial heating area, so as to achieve the insulation of the alloy wire and keep the alloy wire at this temperature for a long enough time to ensure the uniform temperature inside the alloy wire.

[0013] The alloy wire needs to pass through three heating zones to complete the heating process. During this process, the alloy wire switches between the three heating zones without changing its position, which is convenient to operate and improves efficiency.

[0014] Optionally, a give-way component is provided on the baffle, and the give-way component includes a driving member and a rotating cylinder with an opening on the side wall, the driving member is provided on the baffle, a give-way hole is opened through the side wall of the baffle, the give-way hole passes through the top wall of the baffle, the rotating cylinder is located in the give-way hole, the rotating cylinder can block the give-way hole, the center of the bottom of the rotating cylinder is rotatably connected to the inner wall of the give-way hole, the driving member is provided in the baffle, and the driving member is connected to the center of the bottom of the rotating cylinder for driving the rotating cylinder to rotate.

[0015] By adopting the above technical solution, when the rotating rod drives the baffle to move so that the baffle reaches the position of the alloy wire, the alloy wire enters the rotating cylinder through the side wall opening of the rotating cylinder, and at the same time the driving member is started to drive the rotating cylinder to rotate, so that the rotating cylinder rotates around the alloy wire to the other side of the alloy wire, and then the alloy wire passes through the baffle. In this process, there is no need to pull the alloy wire out of the tank body to avoid interference of the alloy wire with the baffle, and the switching of the heating area is realized, which makes it convenient for the alloy wire to be heated through three heating areas to complete the heating process, and the working efficiency is high.

[0016] Optionally, the driving member includes a disc, a rotating gear, a worm and a worm wheel. A positioning rod is fixed in the tank body, the positioning rod is coaxial with the rotating rod, the top of the positioning rod is in contact with the bottom of the rotating rod, the disc is coaxially fixed on the positioning rod, a plurality of gear blocks are fixed on the disc, the worm is arranged in the baffle, the rotating gear is coaxially fixed on one end of the worm close to the disc, when the baffle passes through the clamping assembly, the rotating gear is meshed with the gear block, the worm wheel is arranged in the baffle, the worm wheel is coaxially fixed with the rotating cylinder, and the worm wheel is meshed with the worm.

[0017] By adopting the above technical solution, when the rotating rod drives the baffle to reach the alloy wire, the rotating gear on the baffle also reaches the tooth block on the disc. Since the positioning rod is fixed, the disc will not rotate, so that the rotating gear fits the tooth block and moves along the circumferential direction of the disc, realizing the meshing transmission of the rotating gear and the tooth block, and then realizing the self-rotation of the rotating gear, while driving the worm to rotate, so as to drive the worm wheel to rotate, and finally realizing the rotation of the rotating cylinder, completing the alloy wire passing through the baffle.

[0018] Optionally, the moving assembly includes an installation box and a cylinder, the installation box is fixed on the top wall of the tank body, the cylinder is arranged on the installation box, the output end of the cylinder is aligned with the installation hole and is connected to the clamping assembly, and the cylinder is used to drive the clamping assembly to move up and down.

[0019] By adopting the above technical solution, during installation, the cylinder drives the clamping assembly to be located outside the tank body, and then the alloy wire is fixed on the clamping assembly. Then the cylinder is started to drive the clamping assembly to move the alloy wire downward, so that it passes through the installation hole and reaches the tank body for heating.

[0020] Optionally, the clamping assembly includes a connecting block, an air suction pipe and a suction cup, the connecting block is coaxially connected to the output end of the cylinder via a screw, the top end of the screw is fixed to the output end of the cylinder, the bottom end of the screw is inserted into the connecting block and is rotatably connected to a piston, the screw is threadedly connected to the connecting block, the air suction pipe is provided on the connecting block, the piston is located in the air suction pipe, and the circumferential side of the piston abuts against the inner wall of the air suction pipe, the suction cup is provided on the connecting block and connected to the air suction pipe, the connecting block rotates to drive the screw to drive the piston to move toward or away from the suction cup, and the suction cup abuts against the end of the alloy wire to adsorb the alloy wire.

[0021] By adopting the above technical solution, during installation, the alloy wire is placed vertically, and the top of the alloy wire is against the suction cup, and then the connection block is rotated. Since the connection block is threadedly connected to the screw, the connection block moves along the length direction of the screw, so that the screw is gradually pulled out of the connection block, that is, the screw drives the piston to move upward, extracts the gas in the suction cup, and generates negative pressure under the piston, so that the alloy wire is fixedly adsorbed on the suction cup, and the alloy wire and the clamping assembly are fixed. During disassembly, it is only necessary to reverse the connection block so that the screw gradually penetrates into the connection block, so that the piston pushes the gas into the suction cup and pushes the alloy wire to separate from the suction cup, so as to realize the disassembly of the alloy wire.

[0022] Optionally, a connecting hole for the alloy wire to pass through is provided on the bottom wall of the installation box, and the connecting hole is coaxial with the installation hole. One side of the installation box is open, and a sealing plate is provided on the tank body. The sealing plate can move on the tank body and seal the opening of the installation box. The sealing plate is connected to a partition through a connecting rod, and the partition is located in the bottom wall of the installation box. When the sealing plate moves away from the installation box, the partition is used to seal the connecting hole.

[0023] By adopting the above technical solution, when the alloy wire is in the heating area and is being heated, thermal stress will be generated inside the alloy wire. If the thermal stress accumulates to a certain extent, it may cause deformation or breakage of the alloy wire. After the alloy wire is heated for a period of time, the cylinder is started to drive the alloy wire through the installation hole and then through the connecting hole to reach the installation box, and then the sealing plate is moved so that the side wall of the installation box is in an open state, so as to facilitate the inspection of the surface of the alloy wire and observe whether there are cracks or deformations on the surface. At the same time, it also helps to release some thermal stress and reduce the risk of breakage. It can also be observed whether the alloy wire is heated evenly as a whole, and the rotation adjustment of the alloy wire is completed by loosening and reinstalling the clamping assembly to avoid local overheating of the alloy wire.

[0024] During the movement of the sealing plate, the connecting rod drives the partition to move and blocks the connecting hole, so that the installation box and the tank body cannot be connected. That is, the installation box is opened and the installation hole is closed at the same time, thereby preventing active gases such as oxygen that enters the installation box from entering the tank body through the installation hole, thereby improving the purity of the heat treatment process.

[0025] Optionally, a movable plate is provided in the installation box, a movable hole is opened on the movable plate, the aperture of the movable hole is larger than the aperture of the connecting hole, the peripheral side of the movable plate is in contact with the inner wall of the installation box, the movable plate can move along the moving direction of the alloy wire, and an air outlet is provided on the top of the installation box.

[0026] By adopting the above technical scheme, in the initial state, the movable plate is located at the bottom of the installation box and fits with the bottom wall of the installation box. When the alloy wire passes through the connecting hole and the movable hole and is completely located in the installation box, the sealing plate is opened. After the alloy wire is checked, the alloy wire moves down and the bottom end of the alloy wire is inserted into the movable hole. At the same time, the air outlet is opened. The sealing plate is then reset and the opening of the installation box is reclosed. At this time, the installation hole and the connecting hole are in a connected state. Since the connecting hole is larger than the movable hole, the inert gas in the tank body can pass through the installation hole and the connecting hole to reach between the movable plate and the bottom wall of the installation box. As the inert gas is continuously filled, the air pressure pushes the movable plate up, so that the alloy wire moves relatively in the movable hole, and the gas above the movable plate is discharged through the air outlet.

[0027] During the movement of the moving plate, the alloy wire and the output shaft of the connecting block and the cylinder can all fit through the moving hole, that is, the moving plate is always a closed whole plate, which can separate the upper and lower areas of the moving plate to prevent the air above the moving plate from mixing with the inert gas below.

[0028] When the moving plate reaches the top of the installation box, the volume of the entire installation box is above the moving plate, and the volume of the entire installation box is below the moving plate, so that the original gas in the installation box is discharged and replaced by the inert gas below the moving plate, that is, the installation box is filled with inert gas, so that when the alloy wire enters the installation box again in the future, when the tank body is connected through the installation hole and the connecting hole, no gas other than the inert gas will be mixed in, thereby avoiding oxidation of the alloy wire.

[0029] When the sealing plate is opened next time, the upper and lower areas of the movable plate are both in an open state, so that the movable plate can be manually moved down to the bottom of the installation box to prepare for the filling and lifting of the inert gas.

[0030] In summary, the present application includes at least one of the following beneficial effects: 1. When the rotating rod drives the baffle to move so that the baffle reaches the position of the alloy wire, the alloy wire enters the rotating cylinder through the side wall opening of the rotating cylinder, and the driving member is started to drive the rotating cylinder to rotate, so that the rotating cylinder rotates around the alloy wire to the other side of the alloy wire, and then the alloy wire passes through the baffle. In this process, the alloy wire does not need to be pulled out of the tank body to avoid interference with the baffle, and the switching of the heating area is realized, so that the alloy wire is heated through three heating areas to complete the heating process, and the working efficiency is high; 2. During installation, place the alloy wire vertically, with the top of the alloy wire against the suction cup, and then rotate the connection block. Since the connection block is threadedly connected to the screw, the connection block moves along the length of the screw, so that the screw is gradually pulled out of the connection block, that is, the screw drives the piston to move upward, extracting the gas in the suction cup, so that negative pressure is generated under the piston, thereby fixing the alloy wire on the suction cup, and fixing the alloy wire to the clamping assembly. During disassembly, you only need to reverse the connection block so that the screw gradually penetrates into the connection block, so that the piston pushes the gas into the suction cup and pushes the alloy wire to separate from the suction cup, so as to realize the disassembly of the alloy wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a power-type zero-power magnetic sensor according to an embodiment of the present application; Figure 2 It is a schematic diagram of the structure inside the shell; Figure 3 It is a structural schematic diagram of a high temperature furnace; Figure 4 It is a structural cross-sectional view of a high temperature furnace; Figure 5 is a schematic diagram of the structure of the partition plate; Figure 6 for Figure 4 The enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the structure of the installation box.

[0032] In the figure: 10, high temperature furnace; 11, tank body; 111, mounting hole; 12, baffle; 121, clearance hole; 20, air inlet pipe; 30, moving assembly; 31, installation box; 311, connecting hole; 312, air outlet; 32, cylinder; 40, clamping assembly; 41, connecting block; 42, air intake pipe; 43, suction cup; 44, screw; 45, piston; 50, rotating rod; 60, clearance assembly; 61, driving member; 611, positioning rod; 612, disc; 613, gear block; 614, rotating gear; 615, worm; 616, worm wheel; 62, rotating cylinder; 70, sealing plate; 71, connecting rod; 72, partition; 80, moving plate; 81, moving hole; 110, shell; 120, alloy wire; 130, skeleton; 140, coil; 150, lead wire; DETAILED DESCRIPTION The following is combined with Figure 1-7 This application is described in further detail.

[0033] The present application embodiment discloses a power-type zero-power magnetic sensor. Figure 1 and Figure 2 The power-type zero-power magnetic sensor includes a shell 110, in which an alloy wire 120, a skeleton 130 and a coil 140 are arranged. The skeleton 130 is provided with a groove, and the alloy wire 120 is passed through the groove. The coil 140 is wound on the skeleton 130. Lead wires 150 are provided at both ends of the skeleton 130, and the lead wires 150 are connected to the ends of the coil 140.

[0034] When in use, the alloy wire 120 senses the change of the magnetic field, and the coil 140 detects the induced voltage pulse generated by the change of the magnetic field. When the detected magnet and the sensor move relative to each other, the inner core magnetization of the sensitive alloy wire 120 will jump under the action of the external magnetic field, thereby generating an induced voltage pulse in the coil 140. Therefore, there is no need to add batteries, and the power-type zero-power magnetic sensor converts the change of the magnetic field into electrical energy, thereby enabling the encoder to have the function of storing multi-turn counts without batteries.

[0035] The implementation principle of a power-type zero-power magnetic sensor in the embodiment of the present application is: based on the Wiegand effect. The sensor uses the Wiegand effect to convert magnetic signals into electrical signals, without the need for an external power supply. The amplitude of the output signal is independent of the speed of change of the magnetic field, and can achieve "zero-speed" sensing, so that the encoder has the function of storing multi-turn counts without a battery.

[0036] The embodiment of the present application also discloses a production process of a power-type zero-power consumption magnetic sensor, comprising the following steps: S1, heating the alloy wire 120, and inert gas is used during the heating process to prevent the alloy wire 120 from being oxidized; S2, cooling the heated alloy wire 120 with ice water for subsequent processing; S3, using a motor to wind the alloy wire 120 onto the aluminum alloy drum; S4. The alloy wire 120 is drawn into a flexible and uniform Wiegand wire by a wire twisting machine.

[0037] Reference Figure 3 and Figure 4 , wherein in step 1, the heating of the alloy wire 120 requires a high temperature furnace 10, and the high temperature furnace 10 includes a tank body 11 and three baffles 12, the interior of the tank body 11 is hollow, the baffles 12 are located in the tank body 11, a rotating rod 50 is coaxially penetrated in the tank body 11, a motor is installed on the top wall of the tank body 11, the motor is connected to the rotating rod 50, and is used to drive the rotating rod 50 to rotate on the tank body 11, one side of the baffle 12 is fixed on the rotating rod 50, and a plurality of baffles 12 are arranged radially with the mounting rod as the center. The edge of the baffle 12 is in contact with the inner wall of the tank body 11, so that the plurality of baffles 12 are used to divide the tank body 11 into three heating areas on an average. A mounting hole 111 is formed through the top wall of the tank body 11, and an air inlet pipe 20 is connected to the side wall of the tank body 11. The air inlet pipe 20 is used to pass an inert gas such as argon or helium into the tank body 11, wherein the mounting hole 111 and the air inlet pipe 20 are both connected to the same heating area.

[0038] Reference Figure 3 and Figure 4 A moving assembly 30 is provided on the top wall of the tank body 11, and a clamping assembly 40 is connected to the moving assembly 30. The clamping assembly 40 can clamp the alloy wire 120, and the moving assembly 30 is used to drive the clamping assembly 40 to pass through the mounting hole 111. Each baffle 12 is provided with a yielding assembly 60, so that when the alloy wire 120 is inserted into the tank body 11, it can pass through the baffle 12 without moving, thereby realizing the switching of the three heating areas.

[0039] During production, the alloy wire 120 to be heated is first fixed on the clamping assembly 40. In the initial state, the rotating rod 50 drives the baffle 12 to be located on both sides of the mounting hole 111, so that the mounting hole 111 and the intake pipe 20 are connected to the same heating area. At this time, the moving assembly 30 is used to drive the clamping assembly 40 to carry the alloy wire 120 through the mounting hole 111 into the heating area. The heat in the heating area preheats the alloy wire 120, which can reduce the heating time of the alloy wire 120 and help the alloy wire 120 quickly reach and maintain the required high temperature.

[0040] Reference Figure 4 and Figure 5, then the rotating rod 50 is driven to rotate, so that the baffle 12 moves with the rotating rod 50 as the axis, until the baffle 12 passes over the alloy wire 120 by using the giving way assembly 60, at this time, the adjacent heating area reaches the mounting hole 111 and the intake pipe 20, so that the alloy wire 120 reaches the adjacent heating area, and this heating area is higher than the previous temperature, so that the alloy wire 120 can be heated and quickly heated to a predetermined temperature. After the alloy wire 120 is heated, the rotating rod 50 is driven again to drive the baffle 12 to move, so that the next heating area is connected to the mounting hole 111. After the alloy wire 120 is inserted into the heating area, the temperature of the heating area is the same as the temperature of the initial heating area, so as to achieve the heat preservation of the alloy wire 120, which is used to keep the alloy wire 120 at this temperature for a long enough time to ensure that the internal temperature of the alloy wire 120 is uniform.

[0041] The alloy wire 120 needs to pass through three heating zones to complete the heating process. During this process, the alloy wire 120 switches between the three heating zones without changing its position, which is convenient to operate and improves efficiency.

[0042] Reference Figure 4 and Figure 5 , wherein the clearance assembly 60 includes a driving member 61 and a rotating cylinder 62, wherein the driving member 61 is arranged on the baffle 12, a clearance hole 121 is formed through the side wall of the baffle 12, the clearance hole 121 penetrates the top wall of the baffle 12, the rotating cylinder 62 is located in the clearance hole 121, the rotating cylinder 62 is a half-cylindrical structure, and the top of the rotating cylinder 62 is penetrated. The rotating cylinder 62 can block the clearance hole 121, the center of the bottom of the rotating cylinder 62 is rotatably connected to the inner wall of the clearance hole 121, the driving member 61 is arranged in the baffle 12, and the driving member 61 is connected to the center of the bottom of the rotating cylinder 62.

[0043] Reference Figure 4 and Figure 5 The driving member 61 includes a disc 612, a rotating gear 614, a worm 615 and a worm wheel 616. A positioning rod 611 is fixed in the tank body 11. The positioning rod 611 is coaxial with the rotating rod 50, and the top end of the positioning rod 611 is in contact with the bottom end of the rotating rod 50, so that the center of the tank body 11 is a complete rod. The side wall of the baffle 12 is in contact with the rotating rod 50 and the positioning rod 611, which plays a supporting role, so that the baffle 12 is not easy to tilt.

[0044] Reference Figure 4 and Figure 5The disk 612 is coaxially sleeved on the positioning rod 611, and the disk 612 is fixed to the positioning rod 611. A plurality of tooth blocks 613 are fixed to the disk 612, and the plurality of tooth blocks 613 are arranged along the circumference direction of the disk 612, that is, an incomplete crown tooth is formed. The worm 615 is arranged in the baffle 12, and the rotating gear 614 is coaxially fixed on one end of the worm 615 close to the disk 612. When the baffle 12 passes through the clamping assembly 40, the rotating gear 614 meshes with the tooth block 613. The worm wheel 616 is arranged in the baffle 12, and the worm wheel 616 is coaxially fixed to the rotating cylinder 62, and the worm wheel 616 meshes with the worm 615.

[0045] When the rotating rod 50 drives the baffle 12 to move and makes the baffle 12 reach the position of the alloy wire 120, the alloy wire 120 enters the rotating cylinder 62 through the side wall opening of the rotating cylinder 62. When the baffle 12 reaches the alloy wire 120, the rotating gear 614 on the baffle 12 also reaches the tooth block 613 on the disk 612. Since the positioning rod 611 is fixed, the disk 612 will not rotate, so that the rotating gear 614 fits the tooth block 613 and moves along the circumferential direction of the disk 612, realizing the meshing transmission of the rotating gear 614 and the tooth block 613.

[0046] The rotating gear 614 rotates and drives the worm 615 to rotate at the same time, so as to drive the worm wheel 616 to rotate, and finally realize the rotation of the rotating cylinder 62, so that the rotating cylinder 62 rotates around the alloy wire 120 to the other side of the alloy wire 120, and then the alloy wire 120 passes through the baffle 12. In this process, there is no need to pull the alloy wire 120 out of the tank body 11 to avoid the interference of the alloy wire 120 with the baffle 12, and the switching of the heating area is realized, so that the alloy wire 120 is heated in three heating areas to complete the heating process, and the working efficiency is high.

[0047] Reference Figure 4 and Figure 6 The moving assembly 30 includes an installation box 31 and a cylinder 32. The installation box 31 is fixed on the top wall of the tank body 11. A connecting hole 311 is penetrated through the bottom wall of the installation box 31. The connecting hole 311 is coaxially connected with the installation hole 111. The cylinder 32 is installed on the installation box 31 by bolts. The output end of the cylinder 32 is aligned with the installation hole 111 and is connected to the clamping assembly 40.

[0048] Reference Figure 4 and Figure 6 The clamping assembly 40 includes a connecting block 41, an air suction pipe 42 and a suction cup 43. A screw 44 is fixed to the output end of the cylinder 32. The screw 44 is coaxial with the output shaft of the cylinder 32. The screw 44 is inserted into the connecting block 41. The screw 44 is threadedly connected to the connecting block 41. The bottom end of the screw 44 is located in the connecting block 41 and is rotatably connected to a piston 45.

[0049] Reference Figure 4 and Figure 6 The suction pipe 42 is embedded in the connecting block 41. The suction pipe 42 is vertically arranged and has two ends connected. The screw 44 carries the piston 45 and is inserted from the top of the suction pipe 42. The circumferential side of the piston 45 is against the inner wall of the suction pipe 42. The bottom end of the suction pipe 42 is connected to the suction cup 43, and the suction cup 43 is located at the bottom of the connecting block 41.

[0050] During installation, the alloy wire 120 is placed vertically, and the top of the alloy wire 120 is pressed against the suction cup 43, and then the connection block 41 is rotated. Since the connection block 41 is threadedly connected to the screw 44, the connection block 41 moves along the length direction of the screw 44, so that the screw 44 is gradually withdrawn from the connection block 41, that is, the screw 44 drives the piston 45 to move upward, extracts the gas in the suction cup 43, and generates negative pressure under the piston 45, so that the alloy wire 120 is fixedly adsorbed on the suction cup 43, and the alloy wire 120 is fixed to the clamping assembly 40. During disassembly, it is only necessary to reverse the connection block 41, so that the screw 44 gradually penetrates into the connection block 41, so that the piston 45 pushes the gas into the suction cup 43, and pushes the alloy wire 120 to separate from the suction cup 43, so that the alloy wire 120 is disassembled.

[0051] After the suction cup 43 absorbs the alloy wire 120, the cylinder 32 is started to drive the clamping assembly 40 to drive the alloy wire 120 to move downward, so that the alloy wire 120 passes through the installation hole 111 and reaches the tank body 11 for heating.

[0052] Reference Figure 4 and Figure 7 When the alloy wire 120 is in the heating area and is heated, thermal stress will be generated inside the alloy wire 120. If the thermal stress accumulates to a certain extent, it may cause deformation or breakage of the alloy wire 120. In order to prevent the alloy wire 120 from being damaged, the alloy wire 120 needs to be pulled out of the tank body 11 every 15-30 minutes during the heating process of the alloy wire 120.

[0053] Reference Figure 4 and Figure 7 , an opening is formed on one side of the installation box 31, and a sealing plate 70 is connected to the top wall of the tank body 11 through an electric push rod. The sealing plate 70 can be translated on the tank body 11 under the drive of the electric push rod. When the sealing plate 70 abuts against the installation box 31, the opening of the installation box 31 can be blocked. The sealing plate 70 is connected to a partition plate 72 through a connecting rod 71. The partition plate 72 is located in the bottom wall of the installation box 31. When the sealing plate 70 moves away from the installation box 31, the partition plate 72 is used to block the connection hole 311.

[0054] Reference Figure 4 and Figure 7A movable plate 80 is provided in the installation box 31, and the movable plate 80 is horizontally arranged. A movable hole 81 is opened on the movable plate 80. The aperture of the movable hole 81 is larger than the aperture of the connecting hole 311. The peripheral side of the movable plate 80 is in contact with the inner wall of the installation box 31. The movable plate 80 can move along the moving direction of the alloy wire 120. An air outlet 312 is opened on the top of the installation box 31, and the air outlet 312 is usually in a closed state.

[0055] After the alloy wire 120 is heated for a period of time, the cylinder 32 is started to drive the alloy wire 120 through the installation hole 111 and then through the connection hole 311 to reach the installation box 31, and then the sealing plate 70 is moved to open the side wall of the installation box 31, so as to facilitate the inspection of the surface of the alloy wire 120 to observe whether there are cracks or deformations on the surface, and also to help release some thermal stress and reduce the risk of fracture. It can also be observed whether the alloy wire 120 is heated evenly as a whole, and the loosening and reinstallation of the clamping assembly 40 are used to complete the rotation adjustment of the alloy wire 120 to avoid local overheating of the alloy wire 120.

[0056] Reference Figure 4 and Figure 7 During the movement of the sealing plate 70, the connecting rod 71 drives the partition plate 72 to move and blocks the connecting hole 311, so that the installation box 31 cannot be connected to the tank body 11, that is, the installation box 31 is opened and the installation hole 111 is closed at the same time, thereby preventing active gases such as oxygen entering the installation box 31 from entering the tank body 11 through the installation hole 111, thereby improving the purity of the heat treatment process.

[0057] In the initial state, the movable plate 80 is located at the bottom of the installation box 31 and fits with the bottom wall of the installation box 31. When the alloy wire 120 passes through the connection hole 311 and the movable hole 81 and is completely located in the installation box 31, the inert gas in the tank body 11 passes through several holes to reach the installation box 31 and fills the installation box 31. When the alloy wire 120 is to be inspected, the sealing plate 70 is opened and the partition plate 72 blocks the connection hole 311, so that the installation box 31 is an independent container.

[0058] Reference Figure 4 and Figure 7 After the inspection is completed, the alloy wire 120 is driven downward, and the bottom end of the alloy wire 120 is inserted into the movable hole 81, and the air outlet 312 is opened at the same time. Then the sealing plate 70 is reset and the opening of the installation box 31 is reclosed. At this time, the installation hole 111 and the connecting hole 311 are in a connected state, that is, the installation box 31 is restored to a container connected to the tank body 11, but the alloy wire 120 always blocks the movable hole 81, so that the installation box 31 still cannot be connected to the tank body 11.

[0059] Because the connecting hole 311 is larger than the moving hole 81, the inert gas in the tank body 11 can reach between the moving plate 80 and the bottom wall of the installation box 31 through the installation hole 111 and the connecting hole 311. As the inert gas is continuously filled in, the gas pressure pushes the moving plate 80 upward, causing the alloy wire 120 to move relatively in the moving hole 81, and the gas above the moving plate 80 is discharged through the outlet hole 312.

[0060] Reference Figure 4 and Figure 7 , during the movement of the moving plate 80, the alloy wire 120 and the output shaft of the connecting block 41 and the cylinder 32 can all fit through the moving hole 81, that is, the moving plate is always a closed whole plate, which can separate the upper and lower areas of the moving plate to prevent the air above the moving plate 80 from mixing with the inert gas below. A sealing strip made of aluminum oxide is also fixed on the inner wall of the moving hole 81, which can be pressed against the side wall of the alloy wire 120 to play a sealing role, further isolating the gas on the upper and lower sides of the moving plate 80.

[0061] When the movable plate 80 reaches the top of the installation box 31, the upper part of the movable plate 80 in the installation box 31 becomes the volume of the entire installation box 31, and at this time, the lower part of the movable plate 80 becomes the volume of the entire installation box 31, so that the original gas in the installation box 31 is discharged and replaced by the inert gas under the movable plate 80, that is, the installation box 31 is filled with inert gas, so that when the alloy wire 120 enters the installation box 31 completely again in the subsequent time, when the tank body 11 is connected through the installation hole 111 and the connecting hole 311, no gas other than the inert gas will be mixed in, thereby avoiding oxidation of the alloy wire 120.

[0062] When the sealing plate 70 is opened next time, the upper and lower areas of the movable plate 80 are both in an open state, so that the movable plate 80 can be manually moved down to the bottom of the installation box 31 to prepare for the filling and lifting of the inert gas.

[0063] The implementation principle of the production process of a power-type zero-power magnetic sensor in an embodiment of the present application is as follows: during production, the alloy wire 120 to be processed is first fixed by the clamping assembly 40, so that the alloy wire 120 is connected to the moving assembly 30, and then the moving assembly 30 is started to drive the alloy wire 120 through the mounting hole 111 and completely inserted into the high-temperature tank body 11. At this time, an inert gas is continuously introduced into the tank body 11 through the air inlet pipe 20, so as to maintain the inert atmosphere in the furnace, help remove the active gas that may exist in the furnace, and prevent the alloy wire 120 from reacting with active gases such as oxygen at high temperature, thereby protecting the alloy wire 120 and avoiding oxidation and volatilization of alloy elements.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A power-type zero-power magnetic sensor, characterized in that: The invention comprises a shell (110), wherein an alloy wire (120), a frame (130) and a coil (140) are arranged in the shell (110), wherein the frame (130) is provided with a groove, wherein the alloy wire (120) is inserted into the groove, wherein the coil (140) is wound around the frame (130), and leads (150) are arranged at both ends of the frame (130), and wherein the leads (150) are connected to the ends of the coil (140).

2. A production process of a power-type zero-power magnetic sensor, characterized in that: The following steps are involved: S1, heating the alloy wire (120), and during the heating process, an inert gas is used to prevent oxidation of the alloy wire (120); S2, cooling the heated alloy wire (120) with ice water for subsequent processing; S3, using a motor to wind the alloy wire (120) onto an aluminum alloy drum; S4. The alloy wire (120) is drawn into a flexible and uniform Wiegand wire by a wire twisting machine.

3. The production process of the power-type zero-power consumption magnetic sensor according to claim 2 is characterized in that: In S1, the alloy wire (120) is heated by a high-temperature furnace (10), wherein the high-temperature furnace (10) comprises a tank body (11), the interior of the tank body (11) is hollow, a mounting hole (111) is provided on the top wall of the tank body (11), an air inlet pipe (20) is connected to the side wall of the tank body (11), a moving component (30) is provided on the top wall of the tank body (11), the moving component (30) is connected to a clamping component (40) for clamping the alloy wire (120), and the moving component (30) is used to drive the clamping component (40) to penetrate the mounting hole (111).

4. The production process of the power-type zero-power consumption magnetic sensor according to claim 3 is characterized in that: The high-temperature furnace (10) further comprises three baffles (12); a rotating rod (50) is coaxially passed through the tank body (11); the rotating rod (50) is rotatably connected to the tank body (11); one side of the baffle (12) is fixed to the rotating rod (50); a plurality of the baffles (12) are radially arranged with the mounting rod as the center; the plurality of the baffles (12) are used to evenly divide the tank body (11) into three heating areas; the mounting hole (111) and the air inlet pipe (20) are both connected to the same heating area.

5. The production process of the power-type zero-power consumption magnetic sensor according to claim 4 is characterized in that: The baffle plate (12) is provided with a clearance component (60), the clearance component (60) comprising a driving member (61) and a rotating cylinder (62) with an opening on the side wall, the driving member (61) being provided on the baffle plate (12), a clearance hole (121) being provided through the side wall of the baffle plate (12), the clearance hole (121) being provided through the top wall of the baffle plate (12), the rotating cylinder (62) being located in the clearance hole (121), the rotating cylinder (62) being able to block the clearance hole (121), the center of the bottom of the rotating cylinder (62) being rotatably connected to the inner wall of the clearance hole (121), the driving member (61) being provided in the baffle plate (12), the driving member (61) being connected to the center of the bottom of the rotating cylinder (62) for driving the rotating cylinder (62) to rotate.

6. The production process of the power-type zero-power consumption magnetic sensor according to claim 5 is characterized in that: The driving member (61) comprises a disc (612), a rotating gear (614), a worm (615) and a worm wheel (616); a positioning rod (611) is fixed in the tank body (11); the positioning rod (611) is coaxial with the rotating rod (50); the top end of the positioning rod (611) is in contact with the bottom end of the rotating rod (50); the disc (612) is coaxially fixed on the positioning rod (611); a plurality of tooth blocks (613) are fixed on the disc (612); and the worm wheel (615) is fixed to the rotating rod (50). (615) is arranged in the baffle (12), and the rotating gear (614) is coaxially fixed on one end of the worm (615) close to the disc (612). When the baffle (12) passes through the clamping assembly (40), the rotating gear (614) meshes with the tooth block (613). The worm wheel (616) is arranged in the baffle (12), and the worm wheel (616) is coaxially fixed with the rotating cylinder (62), and the worm wheel (616) meshes with the worm (615).

7. The production process of the power-type zero-power consumption magnetic sensor according to claim 3 is characterized in that: The moving assembly (30) comprises an installation box (31) and a cylinder (32); the installation box (31) is fixed on the top wall of the tank body (11); the cylinder (32) is arranged on the installation box (31); the output end of the cylinder (32) is aligned with the installation hole (111) and is connected to the clamping assembly (40); the cylinder (32) is used to drive the clamping assembly (40) to move up and down.

8. The production process of the power-type zero-power consumption magnetic sensor according to claim 7 is characterized in that: The clamping assembly (40) comprises a connecting block (41), an air suction pipe (42) and a suction cup (43); the connecting block (41) is coaxially connected to the output end of the cylinder (32) via a screw rod (44); the top end of the screw rod (44) is fixed to the output end of the cylinder (32); the bottom end of the screw rod (44) is inserted into the connecting block (41) and is rotatably connected to a piston (45); the screw rod (44) is threadedly connected to the connecting block (41); the air suction pipe (42) is arranged on the connecting block (41); The piston (45) is located in the suction pipe (42), and the circumferential side of the piston (45) is pressed against the inner wall of the suction pipe (42). The suction cup (43) is arranged on the connecting block (41) and is connected to the suction pipe (42). The connecting block (41) is rotated to drive the screw (44) to drive the piston (45) to move toward or away from the suction cup (43). The suction cup (43) is pressed against the end of the alloy wire (120) to adsorb the alloy wire (120).

9. The production process of the power-type zero-power consumption magnetic sensor according to claim 7, characterized in that: A connecting hole (311) for the alloy wire (120) to pass through is provided on the bottom wall of the installation box (31), and the connecting hole (311) is coaxial with the installation hole (111). One side of the installation box (31) is open, and a sealing plate (70) is provided on the tank body (11). The sealing plate (70) can move on the tank body (11) and seal the opening of the installation box (31). The sealing plate (70) is connected to a partition (72) via a connecting rod (71). The partition (72) is located in the bottom wall of the installation box (31). When the sealing plate (70) moves in a direction away from the installation box (31), the partition (72) is used to seal the connecting hole (311).

10. The production process of the power-type zero-power consumption magnetic sensor according to claim 9, characterized in that: A movable plate (80) is provided inside the installation box (31), a movable hole (81) is provided on the movable plate (80), the diameter of the movable hole (81) is larger than the diameter of the connecting hole (311), the peripheral side of the movable plate (80) is in contact with the inner wall of the installation box (31), the movable plate (80) can move along the moving direction of the alloy wire (120), and an air outlet hole (312) is provided on the top of the installation box (31).

Images