A magnetizing device for magnetizing a magnetic signal wheel

Abstract

The present application relates to the field of magnetization processing of signal wheels, and particularly to a magnetization device for magnetizing a magnetic signal wheel, including a support frame, a magnetization table mechanism disposed below the support frame for placing the magnetic signal wheel, a magnetization head mechanism located directly above the magnetization table mechanism for performing magnetization operations on the magnetic signal wheel, a drive source installed on the support frame for driving the magnetization head mechanism to lift and lower, and a zero position adjustment mechanism disposed on the magnetization table mechanism for precisely positioning the magnetic signal wheel to be magnetized. The present application has the effect of improving the magnetization accuracy and ensuring the consistency of the magnetization angle of each magnetic signal wheel.

Description

Technical Field

[0001] The present application relates to the field of magnetization processing of signal wheels, and in particular, to a magnetization device for magnetizing magnetic signal wheels. Background Art

[0002] The signal wheel is a very important part of the automobile crankshaft. The signal wheel cooperates with the crankshaft sensor, and the crankshaft sensor determines the position of the crankshaft, that is, the current position of the engine, by reading the number of teeth for ignition. With the rapid development of the automobile industry, ordinary signal wheels have gradually been replaced by magnetic signal wheels due to complex processing.

[0003] The production and manufacturing of magnetic signal wheels are less complex, and they can be put into use only after magnetization. Specifically, please refer to the Chinese patent with the authorization announcement number CN208672660U, which discloses a magnetized rubber rotational speed signal wheel, including a wheel body, a magnetized rubber ring, and a Hall sensor. The wheel body has a main body part and an installation part, and the installation part is circumferentially arranged around the edge of the main body part; the magnetized rubber ring is sleeved on the installation part, the magnetized rubber ring includes a strong magnetic section and a weak magnetic section, the strong magnetic section and the weak magnetic section are connected to form a magnetic section assembly, and the magnetic section assembly forms a magnetized rubber ring around the installation part; the sensing head of the Hall sensor faces and is close to the magnetized rubber ring.

[0004] It can be known from the related technology that currently, the magnetization of magnetic signal wheels is mainly carried out by a magnetizer. However, the inventor found according to years of processing experience that the magnetization positions of the strong magnetic section and the weak magnetic section of some magnetic signal wheels in the same batch will deviate, and the magnetization accuracy is relatively low.

[0005] In view of the above related technology, the inventor believes that the traditional magnetizer has the defect of low magnetization accuracy. Summary of the Invention

[0006] In order to improve the magnetization accuracy and ensure the consistency of the magnetization angle of each magnetic signal wheel, the present application provides a magnetization device for magnetizing magnetic signal wheels.

[0007] A magnetization device for magnetizing magnetic signal wheels provided by the present application adopts the following technical solution:

[0008] A magnetization device for magnetizing magnetic signal wheels includes a support frame, a magnetization table mechanism arranged below the support frame for placing the magnetic signal wheel, a magnetization head mechanism located directly above the magnetization table mechanism for performing magnetization operations on the magnetic signal wheel, a drive source installed on the support frame for driving the magnetization head mechanism to lift and lower, and a zero position adjustment mechanism arranged on the magnetization table mechanism for accurately positioning the magnetic signal wheel to be magnetized.

[0009] By adopting the above technical solution, during operation, the magnetic signal wheel to be magnetized is placed on the magnetization table mechanism, and the driving source is started to make the magnetization head mechanism move towards the magnetization table mechanism. After the magnetization head mechanism is in place, the zero-position adjustment mechanism is used to accurately position the magnetic signal wheel to be magnetized, thereby eliminating the gap of zero-position positioning, ensuring the consistency of the magnetization angle of each magnetic signal wheel, and improving the magnetization accuracy.

[0010] Preferably, the magnetization table mechanism at least includes a horizontally arranged magnetization module seat and a support assembly arranged on the magnetization module seat;

[0011] The support assembly includes a shaft seat vertically passing through the magnetization module seat and rotatably connected to the magnetization module seat, a main shaft fixedly connected to the shaft seat and coaxially arranged with the shaft seat, a support cylinder coaxially sleeved outside the main shaft and fixedly connected to the shaft seat, and a support disk coaxially sleeved outside the main shaft and fixedly connected to the end of the support cylinder away from the shaft seat. The support disk is provided with a special-shaped hole passing through the magnetic signal wheel and a zero-point limit pin for positioning the magnetic signal wheel.

[0012] By adopting the above technical solution, during placement, only the central hole of the magnetic signal wheel needs to be aligned with the main shaft, the special-shaped hole needs to be aligned with the zero-point limit pin, and then it can be directly sleeved on the main shaft, which is very convenient to operate; the setting of the zero-point limit pin is mainly used to position the magnetic signal wheel to be magnetized, reduce the possibility of relative rotation of the magnetic signal wheel, and ensure the magnetization accuracy.

[0013] Preferably, the zero-point limit pin slidably passes through the support disk. A fixing block is fixedly connected to the side of the support disk facing the shaft seat. A receiving groove is opened at the position corresponding to the zero-point limit pin on the fixing block. A compression spring is arranged in the receiving groove, one end of which is connected to the zero-point limit pin and the other end is connected to the inner bottom wall of the receiving groove.

[0014] By adopting the above technical solution, when the compression spring is in the natural state, a part of the rod body of the zero-point limit pin extends out of the surface of the support disk; when subjected to an external force, the zero-point limit pin retracts into the receiving groove; when the external force is removed, the zero-point limit pin resets.

[0015] Preferably, the driving source includes a guiding air cylinder installed on the cross beam of the support frame with the piston rod vertically downward, and a horizontally arranged hanging plate fixedly connected to the free end of the piston rod of the guiding air cylinder. The magnetization head mechanism is installed on the hanging plate.

[0016] By adopting the above technical solution, the guiding air cylinder can drive the magnetization head mechanism to lift through the hanging plate for resetting or magnetization operation.

[0017] Preferably, the magnetizing head mechanism includes a tooling plate detachably connected to the hanging plate, a positioning shaft fixed to the center of the tooling plate away from the hanging plate and coaxially arranged with the main shaft, an adapter plate sleeved on the positioning shaft and rotatable and adjustable relative to the tooling plate, a magnetizing cylinder fixed to the side of the adapter plate away from the tooling plate, and an annular magnetizing head embedded in the magnetizing cylinder for magnetization.

[0018] By adopting the above technical solution, the design of the adapter plate being able to rotate and adjust is convenient for the staff to debug the magnetizing angle of the annular magnetizing head in the early stage, and to avoid the magnetizing accuracy being affected by errors caused during the production or assembly process as much as possible.

[0019] Preferably, a plurality of fastening bolts connecting the tooling plate and the adapter plate are provided between the tooling plate and the adapter plate, and a slideway is provided on the tooling plate corresponding to the position of each fastening bolt for the fastening bolt to pass through and slide so that the adapter plate can be rotated and adjusted relative to the tooling plate. The width of the slideway is larger than the diameter of the rod body of the fastening bolt and smaller than the diameter of the nut of the fastening bolt. The rod body of the fastening bolt passes through the slideway and is threadedly connected to the adapter plate, and the nut of the fastening bolt abuts against the side of the tooling plate away from the adapter plate.

[0020] By adopting the above technical solution, since the width of the slide is larger than the diameter of the rod of the fastening bolt, it can provide sufficient protection for the fine-tuning of the rotation of the adapter plate. At the same time, the shape of the slide can also be adaptively designed as needed. Generally, the adapter plate and the tooling plate are fixed by fastening bolts. When adjusting, you only need to loosen the fastening bolts.

[0021] Preferably, a fine-tuning component is provided on the tooling plate at a position away from the adapter plate and close to the edge;

[0022] The fine adjustment assembly includes a fixed seat fixed on the tooling plate, a slide seat arranged opposite to the fixed seat, a dial indicator installed on the fixed seat and with a measuring head always in contact with the slide seat, a guide block fixed on the slide seat and extending into the tooling plate, and a lever fixed to an end of the guide block away from the slide seat and extending into the adapter plate. A guide groove extending along the telescopic direction of the measuring head of the dial indicator is processed at a position on the tooling plate corresponding to the guide block, the guide block slides in the guide groove, and a strip-shaped movable groove perpendicular to the guide groove is opened at a position on the adapter plate corresponding to the lever for the lever to drive the adapter plate to rotate;

[0023] A fixing bolt is passed through the slide, the screw rod of the fixing bolt passes through the slide and is threadedly connected to the tooling plate, the nut of the fixing bolt abuts against the slide, and a strip fixing groove extending along the length direction of the guide groove is processed on the slide corresponding to the position of the fixing bolt.

[0024] By adopting the above technical solution, during debugging, loosen the fastening bolts and the fixing bolts, move the slide along the guide groove, and during the movement, the lever slides in the bar-shaped movable groove and drives the adapter plate to rotate, so as to fine-tune the angle of the annular magnetization head; during the debugging process, the staff can ensure the debugging accuracy through the readings on the dial indicator; after the debugging is completed, tighten the fastening bolts and the fixing bolts.

[0025] Preferably, the magnetizing head mechanism further includes a detection module, which includes a detection plate horizontally arranged just below the positioning shaft and located inside the magnetizing cylinder, a special-shaped plate located between the tooling plate and the hanging plate and parallel to the detection plate, a guide shaft sliding through the positioning shaft and the tooling plate and having two ends fixedly connected to the detection plate and the special-shaped plate respectively, and a reset spring connected between the positioning shaft and the detection plate, and there is a movable space between the detection plate and the positioning shaft;

[0026] A lifting block is provided on one side of the special-shaped plate and is slidably mounted on the tooling plate through a linear bearing. A first adjusting bolt threadedly connected to the lifting block is passed through the lifting block. A vertical plate extending axially along the positioning shaft is fixedly connected to the plate surface of the special-shaped plate close to the lifting block. A horizontal plate extending horizontally to just above the first adjusting bolt is fixedly connected to the end of the vertical plate away from the special-shaped plate. A second proximity sensor is installed on the horizontal plate to detect the parallelism of the magnetic signal wheel by cooperating with the first adjusting bolt.

[0027] A guide column extending along the main shaft axis is fixed on the magnetizing module seat, and a second adjusting bolt is threadedly connected to the free end of the guide column. A guide sleeve is embedded and installed on the tooling plate below the lifting block for the guide column to slide through to drive the lifting block to rise.

[0028] By adopting the above technical solution, when the magnetizing head mechanism is in place, if the lifting block and the detection plate stop rising at the same time, and the detection head of the second proximity sensor maintains contact with the detection surface of the first adjusting bolt, it means that the parallelism of the magnetic signal wheel meets the requirements; if the lifting block stops rising and the detection plate continues to rise, resulting in the separation of the detection head of the second proximity sensor from the detection surface of the first adjusting bolt, it means that the parallelism of the magnetic signal wheel does not meet the requirements, that is, one side is lifted up due to not being laid flat or put in place or the wheel body is deformed, then the magnetization is stopped to ensure the magnetization accuracy and the magnetization pass rate.

[0029] Preferably, a zero position shaft extending along the axial direction of the positioning shaft is fixedly connected to a position of the positioning shaft away from one end of the tooling plate and directly opposite to the zero point limit pin, and a first zero position rod and a second zero position rod which are coaxially connected and arranged in sequence are integrally connected to the free end of the zero position shaft, and a diameter of the first zero position rod is larger than that of the second zero position rod and smaller than the minimum diameter of the special-shaped hole on the magnetic signal wheel;

[0030] The zero - position adjustment mechanism includes a zero - position linkage rod with one end fixed on the shaft seat and the other end horizontally extending away from the shaft seat, a limit seat fixed on the magnetizing module seat for restricting the rotation angle of the zero - position linkage rod, and a force - applying source and a force - storing source fixed on the magnetizing module seat and located on both sides of the zero - position linkage rod respectively. A relief opening for one end of the zero - position linkage rod to extend into is provided at the position of the support cylinder corresponding to the zero - position linkage rod.

[0031] The force - storing source stores force when the force - applying source applies force, and releases force when the force - applying source stops applying force, and drives the main shaft to rotate through the zero - position linkage rod to eliminate the zero - point positioning gap.

[0032] By adopting the above - mentioned technical solution, the main function of the force - applying source is to apply an external force to the zero - position linkage rod so that the main shaft maintains its initial state, so that the first zero - position rod can be inserted into the special - shaped hole of the magnetic signal wheel when the magnetizing head mechanism is in place; the main function of the force - storing source is to store force when the force - applying source applies force and release force when the force - applying source stops applying force, so as to drive the main shaft to rotate through the zero - position linkage rod.

[0033] Preferably, the limit seat includes a main arm fixed directly below the zero - position linkage rod and arranged cross -wise with the zero - position linkage rod, side arms integrally formed at both ends of the main arm and located on both sides of the cushion block respectively, and a first limit bolt and a second limit bolt respectively thread - connected to the two side arms and capable of moving relatively or away from each other for adjustment.

[0034] The force - applying source is a zero - position cylinder, which is on the same side as the second limit bolt;

[0035] The force - storing source includes a spring seat fixed on the magnetizing module seat and on the same side as the first limit bolt, and a zero - position spring arranged in the spring seat with one end extending out of the spring seat and always abutting against the zero - position linkage rod.

[0036] By adopting the above - mentioned technical solution, in the initial state, the piston rod of the force - applying source pushes the zero - position linkage rod to abut against the first limit bolt, and the zero - position spring is compressed; when the piston rod of the force - applying source contracts, the force - storing source is in a state of releasing force, that is, the zero - position spring pushes the zero - position linkage rod to drive the shaft seat to rotate. During the rotation of the shaft seat, the main shaft drives the magnetic signal wheel to be magnetized to rotate accordingly until the zero - position linkage rod contacts the second limit bolt. At this time, the inner wall of the special - shaped hole of the magnetic signal wheel abuts against the outer wall of the first zero - position rod, thereby eliminating the zero - point positioning gap, ensuring the consistency of the magnetizing angle of each magnetic signal wheel, and improving the magnetizing accuracy.

[0037] In summary, the present application includes at least one of the following beneficial technical effects:

[0038] 1. In the present application, the magnetic signal wheel to be magnetized can be accurately positioned through the zero - position adjustment mechanism, thereby eliminating the zero - point positioning gap, ensuring the consistency of the magnetizing angle of each magnetic signal wheel, and improving the magnetizing accuracy;

[0039] 2. By setting a zero position limit pin on the support disk, it is used to position the magnetic signal wheel to be magnetized, reducing the possibility of relative rotation of the magnetic signal wheel and ensuring the magnetization accuracy.

[0040] 3. The setting of the detection module can detect the parallelism of the magnetic signal wheel to be magnetized after the annular magnetizing head is in place, so as to ensure the magnetization accuracy and the qualification rate of magnetization. Description of the Drawings

[0041] Figure 1 is the overall structural schematic diagram of the magnetizing device according to the embodiment of the present application;

[0042] Figure 2 is the structural schematic diagram showing the overall magnetizing table mechanism;

[0043] Figure 3 is the cross-sectional view showing the specific structure of the magnetizing table mechanism;

[0044] Figure 4 is the structural schematic diagram showing the magnetic signal wheel;

[0045] Figure 5 is the exploded schematic diagram showing the specific structure at the zero position limit pin on the support disk;

[0046] Figure 6 is the structural schematic diagram showing the specific structure of the magnetizing head mechanism and the cooperation relationship between the magnetizing head mechanism and the magnetizing table mechanism;

[0047] Figure 7 is the structural schematic diagram showing the part of the magnetizing head mechanism covered by the magnetized cylinder;

[0048] Figure 8 is the exploded schematic diagram showing the connection relationship between the tooling plate and the adapter plate;

[0049] Figure 9 is the schematic diagram showing the specific structure of the fine-tuning component and part of the structure of the detection module;

[0050] Figure 10 is the schematic diagram showing the specific structure of the fixed seat;

[0051] Figure 11 is the schematic diagram showing the specific structure of the sliding seat;

[0052] Figure 12 is the schematic diagram showing the specific structure of the zero position adjustment mechanism;

[0053] Figure 13 is the schematic diagram showing the specific structure of the energy storage source.

[0054] Description of reference numerals: 1, support frame; 2, magnetizing table mechanism; 21, magnetizing module seat; 22, support assembly; 221, deep groove ball bearing; 222, shaft seat; 223, main shaft; 224, support cylinder; 2241, support disc; 225, cushion cylinder; 226, zero point limit pin; 227, fixing block; 2271, receiving groove; 228, compression spring; 229, positioning pin; 24, photoelectric sensor; 25, support seat; 26, L-shaped plate; 27, first proximity sensor; 3, magnetizing head mechanism; 31, tooling plate; 311, mounting block; 312, slideway; 313, guiding groove; 32, positioning shaft; 33, adapter plate; 331, strip-shaped movable groove; 34, magnetizing cylinder; 35, zero position shaft; 351, first zero position rod; 352, second zero position rod; 36, fastening bolt; 37, height rod; 371, height head; 39, detection module; 391, detection plate; 392, special-shaped plate; 393, guiding shaft; 394, return spring; 395, threaded support foot; 396, lifting block; 397, linear bearing; 398, first adjustment bolt; 399, vertical plate; 400, horizontal plate; 401, second proximity sensor; 402, guide post; 403, second adjustment bolt; 404, guide sleeve; 4, drive source; 41, guiding cylinder; 42, hanging plate; 5, zero position adjustment mechanism; 51, zero position linkage rod; 52, limit seat; 521, main arm; 522, side arm; 523, first limit bolt; 524, second limit bolt; 53, force application source; 54, energy storage source; 541, spring seat; 5411, accommodating cavity; 5412, mounting hole; 542, zero position spring; 543, distance adjustment bolt member; 5431, bolt rod; 5432, top head; 55, cushion block; 6, magnetic signal wheel; 61, wheel body; 62, center hole; 63, detection hole; 64, special-shaped hole; 9, fine adjustment assembly; 91, fixing seat; 911, first fixing plate; 912, second fixing plate; 913, dividing groove; 914, upper clamping plate; 915, lower clamping plate; 916, shaft hole; 92, sliding seat; 921, vertical plate; 922, horizontal plate; 923, guiding block; 924, lever; 925, strip-shaped fixing groove; 926, fixing bolt; 93, dial indicator. Detailed implementation manners

[0055] The following further describes the present application in detail with reference to Figure 1-13 the accompanying drawings.

[0056] An embodiment of the present application discloses a magnetizing device for magnetizing a magnetic signal wheel. Refer to Figure 1, the magnetizing device includes a support frame 1, a magnetizing table mechanism 2 arranged below the support frame 1, a magnetizing head mechanism 3 located directly above the magnetizing table mechanism 2, a drive source 4 installed on the support frame 1 and connected to the magnetizing head mechanism 3, and a zero position adjustment mechanism 5 arranged on the magnetizing table mechanism 2; the support frame 1 is a gantry, and its specific structure can be designed according to actual needs; the main function of the magnetizing table mechanism 2 is to provide a place for the magnetic signal wheel 6 to be magnetized and to perform preliminary positioning on the magnetic signal wheel 6; the main function of the drive source 4 is to drive the magnetizing head mechanism 3 to lift and lower, so as to cooperate with the magnetizing table mechanism 2 to perform magnetizing operations on the magnetic signal wheel 6 placed on the magnetizing table mechanism 2; the main function of the zero position adjustment mechanism 5 is to accurately position the magnetic signal wheel 6 placed on the magnetizing table mechanism 2, so as to ensure the consistency of the magnetizing angle of each magnetic signal wheel 6.

[0057] Refer to Figure 2 , the magnetizing table mechanism 2 includes a magnetizing module seat 21 and a support assembly 22 arranged on the magnetizing module seat 21. Among them, the main function of the support assembly 22 is to carry and support the magnetic signal wheel 6.

[0058] Refer to Figure 2 and Figure 3 , the above-mentioned support assembly 22 includes a shaft seat 222 rotatably arranged on the magnetizing module seat 21 through a deep groove ball bearing 221. The magnetizing module seat 21 is provided with a fixing hole for the shaft seat 222 to penetrate at the position corresponding to the shaft seat 222. A main shaft 223 coaxial with itself and vertically arranged is fixedly connected to the shaft seat 222. A support cylinder 224 fixedly connected to the shaft seat 222 is coaxially sleeved outside the main shaft 223. A cushion cylinder 225 fixedly connected to the shaft seat 222 is coaxially sleeved outside the support cylinder 224. The top end of the cushion cylinder 225 is lower than the top end of the support cylinder 224.

[0059] A support disk 2241 horizontally arranged and sleeved outside the main shaft 223 is fixedly connected to one end of the support cylinder 224 away from the shaft seat 222. The upper surface of the support disk 2241 is lower than the main shaft 223, and the magnetic signal wheel 6 can be placed on the support disk 2241.

[0060] A photoelectric sensor 24 is arranged at a position on one side of the magnetizing module seat 21 where the support assembly 22 is located. The photoelectric sensor 24 is installed on the upper surface of the magnetizing module seat 21 through a support seat 25, and is mainly used to detect whether the magnetic signal wheel 6 is placed on the support disk 2241.

[0061] Refer to Figure 4, It should be noted that the magnetic signal wheel 6 includes a wheel body 61. The circumferential surface of the wheel body 61 is a magnetized surface, and multiple strongly magnetized segments and weakly magnetized segments are arranged at intervals on the magnetized surface. A central hole 62 for the main shaft 223 to pass through is provided at the center of the wheel body 61. A plurality of detection holes 63 that are equally spaced in a circumferential manner are provided around the central hole 62 on the wheel body 61. An irregular hole 64 is provided between two adjacent detection holes 63.

[0062] Refer to Figure 4 and Figure 5 , a zero - point limit pin 226 for positioning the irregular hole 64 of the magnetic signal wheel 6 is provided on the support disk 2241. The zero - point limit pin 226 can slide along the axial direction of the main shaft 223. A fixing block 227 is fixedly connected to the side of the support disk 2241 facing the shaft seat 222 and corresponding to the zero - point limit pin 226. A receiving groove 2271 is provided in the fixing block 227. A compression spring 228 is provided in the receiving groove 2271. One end of the compression spring 228 is connected to the zero - point limit pin 226, and the other end is connected to the inner bottom wall of the receiving groove 2271. When the compression spring 228 is in a natural state, a part of the rod body of the zero - point limit pin 226 extends out of the surface of the support disk 2241.

[0063] Positioning pins 229 are fixedly connected to the positions on both sides of the zero - point limit pin 226 on the support disk 2241. The two positioning pins 229 correspond to the positions of the detection holes 63 on both sides of the irregular hole 64 on the magnetic signal wheel 6 one by one.

[0064] When placing, after aligning the central hole 62 of the magnetic signal wheel 6 with the main shaft 223, the irregular hole 64 with the zero - point limit pin 226, and the detection holes 63 with the positioning pins 229, it can be directly sleeved on the main shaft 223.

[0065] Refer to Figure 6 and Figure 7 , the drive source 4 includes a guiding cylinder 41 installed on the cross - beam of the support frame 1. The piston rod of the guiding cylinder 41 is arranged vertically downward. A horizontally arranged hanging plate 42 is fixedly connected to the free end of the piston rod of the guiding cylinder 41. The hanging plate 42 is rectangular; the magnetizing head mechanism 3 includes a tooling plate 31 that is detachably connected to the hanging plate 42 and is rectangular, a positioning shaft 32 fixedly connected to the center of the side of the tooling plate 31 facing away from the hanging plate 42 and coaxial with the main shaft 223, a transfer plate 33 sleeved on the positioning shaft 32 and capable of rotating and adjusting relative to the tooling plate 31, a magnetization cylinder 34 fixed to the side of the transfer plate 33 facing away from the tooling plate 31, and an annular magnetizing head embedded in the magnetization cylinder 34 and connected to a magnetization assembly (not shown). The size of the tooling plate 31 is larger than that of the transfer plate 33. Two mounting blocks 311 are symmetrically fixedly connected to the side of the tooling plate 31 away from the transfer plate 33. The hanging plate 42 is connected to the two mounting blocks 311 by bolts.

[0066] During operation, the magnetization head mechanism 3 is driven by the guiding cylinder 41 to move downward until the annular magnetization head is sleeved outside the magnetic signal wheel 6 for magnetization.

[0067] A height rod 37 extending axially along the positioning shaft 32 is installed at a position on the lower surface of the tooling plate 31 near a corner. An adjustable height head 371 is threadedly connected to the height rod 37. A first proximity sensor 27 fixed to the upper surface of the magnetization module base 21 through an L-shaped plate 26 is provided at a position directly below the height rod 37. The detection head of the first proximity sensor 27 faces the height head 371. When the magnetization head mechanism 3 is in place, the height head 371 contacts the first proximity sensor 27 to achieve signal connection, mainly for detecting whether the annular magnetization head has descended in place, thus ensuring the smooth progress of the magnetization operation.

[0068] Refer to Figure 7 , a zero-position shaft 35 extending axially along the positioning shaft 32 is fixedly connected to the end of the positioning shaft 32 away from the tooling plate 31 and opposite to the zero-point limit pin 226. A first zero-position rod 351 and a second zero-position rod 352 which are coaxial and arranged in sequence are integrally connected to the free end of the zero-position shaft 35. The diameter of the first zero-position rod 351 is larger than that of the second zero-position rod 352 but smaller than the minimum diameter of the special-shaped hole 64 on the magnetic signal wheel 6.

[0069] Refer to Figure 8 , the adapter plate 33 is approximately circular. There are three fastening bolts 36 between it and the tooling plate 31. Slideways 312 for the fastening bolts 36 to pass through and slide are provided at positions on the tooling plate 31 corresponding to each fastening bolt 36. The width of the slideways 312 is larger than the diameter of the rod body of the fastening bolt 36 and smaller than the diameter of the nut of the fastening bolt 36. The rod body of the fastening bolt 36 passes through the slideways 312 and is threadedly connected to the adapter plate 33. Usually, the nut of the fastening bolt 36 abuts against the upper surface of the tooling plate 31. According to needs, the slideways 312 can be linear or arc-shaped as long as it can meet the requirement that the adapter plate 33 can be rotated and finely adjusted.

[0070] Refer to Figure 9 , a fine-tuning assembly 9 is provided at a position on the tooling plate 31 away from the adapter plate 33 and near the edge, mainly for pre-adjusting the magnetization angle of the annular magnetization head in the early stage to avoid the influence of errors generated during production or assembly on the magnetization accuracy. The fine-tuning assembly 9 includes a fixed seat 91 installed on the tooling plate 31, a sliding seat 92 provided on the tooling plate 31 and opposite to the fixed seat 91, and a dial indicator 93 installed on the fixed seat 91 and whose measuring head always abuts against the sliding seat 92.

[0071] Refer to Figure 9 and Figure 10, the fixing base 91 includes a first fixing plate 911 and a second fixing plate 912 which are integrally formed. They are in an L shape between them. The first fixing plate 911 is fixed to the fixture plate 31 near one of its edges by screws. On the second fixing plate 912, a dividing groove 913 is machined inward from the edge of the aforementioned fixture plate 31. The dividing groove 913 penetrates along the thickness direction of the second fixing plate 912 and divides the second fixing plate 912 into an upper clamping plate 914 and a lower clamping plate 915. The upper clamping plate 914 can deform slightly relative to the lower clamping plate 915. A shaft hole 916 is machined between the upper clamping plate 914 and the lower clamping plate 915. During installation, the shaft tube of the dial indicator 93 is passed through the shaft hole 916 towards the sliding seat 92, and then a bolt passes through the upper clamping plate 914 and is threadedly connected to the lower clamping plate 915, so that the upper clamping plate 914 and the lower clamping plate 915 clamp and fix the dial indicator 93.

[0072] Refer to Figure 9 and Figure 11 , the sliding seat 92 includes a vertically arranged plate 921 and a horizontally arranged plate 922 which are integrally formed. They are in an L shape between them. The horizontally arranged plate 922 is attached to the surface of the fixture plate 31. The vertically arranged plate 921 is arranged opposite to the second fixing plate 912. The shaft tube of the dial indicator 93 is perpendicular to the vertically arranged plate 921.

[0073] Refer to Figure 8 and Figure 11 , a guiding block 923 extending into the fixture plate 31 is fixedly connected to the lower surface of the horizontally arranged plate 922. The cross-section of the guiding block 923 is rectangular. A guiding groove 313 extending along the telescopic direction of the measuring head of the dial indicator 93 is machined on the fixture plate 31 at the position corresponding to the guiding block 923. The guiding block 923 slides in the guiding groove 313, and the width of the guiding block 923 is adapted to the width of the guiding groove 313. One end of the guiding block 923 away from the horizontally arranged plate 922 is fixedly connected to a dial rod 924 extending into the adapter plate 33. A strip-shaped movable groove 331 perpendicular to the guiding groove 313 is formed on the adapter plate 33 at the position corresponding to the dial rod 924. In the initial state, the dial rod 924 is located at the middle position of the strip-shaped movable groove 331.

[0074] Strip-shaped fixing grooves 925 are respectively machined on the two side surfaces of the horizontally arranged plate 922 on both sides of the guiding groove 313. The strip-shaped fixing grooves 925 extend along the length direction of the guiding groove 313. Fixing bolts 926 are respectively provided on the horizontally arranged plate 922 at the positions corresponding to the two strip-shaped fixing grooves 925. The screw rods of the fixing bolts 926 pass through the strip-shaped fixing grooves 925 and are threadedly connected to the fixture plate 31. Usually, the nuts of the fixing bolts 926 abut against the horizontally arranged plate 922 for fixing the sliding seat 92.

[0075] During debugging, loosen the fastening bolt 36 and the fixing bolt 926, move the slide 92 along the guide groove 313, and during the movement, the lever 924 slides in the bar-shaped movable groove 331 and drives the adapter plate 33 to rotate, thereby achieving fine adjustment of the angle of the annular magnetization head; during the debugging process, the staff can ensure the debugging accuracy through the reading on the dial indicator 93. The specific principle is: convert the angle to be rotated, that is, the angle deviation, into the reading of the dial indicator 93, and the reading value = 2πr* (angle / 360°); after the debugging is completed, tighten the fastening bolt 36 and the fixing bolt 926.

[0076] Reference Figure 9 The magnetizing head mechanism 3 also includes a detection module 39. When the annular magnetizing head is in place, the detection module 39 detects the parallelism of the magnetic signal wheel 6 to be magnetized. If the parallelism of the magnetic signal wheel 6 does not meet the requirements, that is, it is not laid flat, not put in place, or the wheel body 61 is deformed so that one side is tilted, the magnetization is stopped; if the parallelism of the magnetic signal wheel 6 meets the requirements, the magnetization is started.

[0077] Reference Figure 7 and Figure 9 The detection module 39 includes a detection plate 391 horizontally arranged just below the positioning shaft 32 and located inside the magnetizing cylinder 34, a special-shaped plate 392 located between the tooling plate 31 and the hanging plate 42 and parallel to the detection plate 391, a guide shaft 393 sliding through the positioning shaft 32 and the tooling plate 31 and having two ends fixedly connected to the detection plate 391 and the special-shaped plate 392, and a return spring 394 arranged between the positioning shaft 32 and the detection plate 391; a reset spring 394 is provided on the detection plate 391 at a position corresponding to the zero position shaft 35. The shaft 35 passes through the through hole, and the detection plate 391 is fixedly connected with three threaded legs 395 for leaning against the magnetic signal wheel 6 on the side away from the positioning shaft 32; the positioning shaft 32 and the detection plate 391 are provided with grooves on the opposite sides, and the two ends of the reset spring 394 are respectively embedded in the two grooves. When the reset spring 394 is in a natural state, the special-shaped plate 392 is tightly attached to the upper surface of the tooling plate 31 due to the influence of gravity and the elastic force of the reset spring 394. At this time, there is a movable space between the detection plate 391 and the positioning shaft 32. In order to prevent the reset spring 394 from falling off, the length of the reset spring 394 needs to be greater than the maximum displacement of the detection plate 391 during design.

[0078] A lifting block 396 parallel to the tooling plate 31 is provided on one side of the special-shaped plate 392. The lifting block 396 is slidably mounted on the tooling plate 31 through two linear bearings 397. A first adjusting bolt 398 threadedly connected to the lifting block 396 is vertically penetrated on the lifting block 396 between the two linear bearings 397. The end of the first adjusting bolt 398 located above the lifting block 396 is a detection surface. A cross-shaped through hole is provided on the rod body of the first adjusting bolt 398 located below the lifting block 396. The operator can adjust the height of the detection surface by using a rod-shaped tool in conjunction with the through hole. degree; a vertical plate 399 extending axially along the positioning shaft 32 is fixedly connected to the plate surface of the special-shaped plate 392 close to the lifting block 396, and a horizontal plate 400 extending horizontally to just above the first adjusting bolt 398 is fixedly connected to the end of the vertical plate 399 away from the special-shaped plate 392, and a second proximity sensor 401 facing the detection surface is installed on the horizontal plate 400. When the magnetizing head mechanism 3 is in the initial state or the parallelism of the magnetic signal wheel 6 meets the requirements, the detection head of the second proximity sensor 401 abuts against the detection surface of the first adjusting bolt 398 to keep the signal connected.

[0079] Reference Figure 9 and Figure 12 A guide column 402 is fixed on the upper surface of the magnetizing module seat 21, and a second height-adjustable adjustment bolt 403 is threadedly connected to the free end of the guide column 402. A guide sleeve 404 for the guide column 402 to slide through is embedded in the position of the tooling plate 31 below the lifting block 396.

[0080] Reference Figure 6 , Figure 7 and Figure 9 During debugging, the magnetic signal wheel 6 to be magnetized is placed on the support plate 2241, and the magnetizing head mechanism 3 is driven to slowly descend by the guide cylinder 41. During the descent, the guide column 402 gradually passes through the guide sleeve 404 and lifts the lifting block 396 through the second adjusting bolt 403. During the lifting process, the lifting block 396 drives the detection plate 391 to rise synchronously through the horizontal plate 400, the vertical plate 399, the special-shaped plate 392 and the guide shaft 393; when the magnetizing head mechanism 3 is in place, if the detection head of the second proximity sensor 401 is separated from the detection surface of the first adjusting bolt 398, it is necessary to rotate the second adjusting bolt 403 for adjustment so that the second proximity sensor 401 contacts the detection surface to maintain signal connectivity.

[0081] During the actual magnetization operation process, after the magnetization head mechanism 3 is in place, if the lifting block 396 and the detection plate 391 stop rising simultaneously, and the detection head of the second proximity sensor 401 remains in contact with the detection surface of the first adjustment bolt 398, it indicates that the parallelism of the magnetic signal wheel 6 meets the requirements; if the lifting block 396 stops rising and the detection plate 391 continues to rise, resulting in the separation of the detection head of the second proximity sensor 401 from the detection surface of the first adjustment bolt 398, it indicates that the parallelism of the magnetic signal wheel 6 does not meet the requirements.

[0082] Referring to Figure 12 , the above-mentioned zero position adjustment mechanism 5 includes a zero position linkage rod 51, a limit seat 52, a force application source 53, and a force storage source 54; the zero position linkage rod 51 is an irregular plate-shaped rod body, one end of which is fixed to the shaft seat 222 by screws, and the other end extends horizontally. The support cylinder 224 and the cushion cylinder 225 are provided with relief openings for one end of the zero position linkage rod 51 to extend into at positions corresponding to the zero position linkage rod 51; the limit seat 52 is fixed to the magnetization module seat 21, and the force application source 53 and the force storage source 54 are respectively arranged on both sides of the zero position linkage rod 51.

[0083] A cushion block 55 is fixedly connected to the middle position of the zero position linkage rod 51 on the side facing the magnetization module seat 21; the limit seat 52 includes a main arm 521 fixed to the magnetization module seat 21 directly below the cushion block 55, side arms 522 integrally formed at both ends of the main arm 521 and located on both sides of the cushion block 55 respectively, and a first limit bolt 523 and a second limit bolt 524 respectively arranged on the two side arms 522; the main arm 521 and the zero position linkage rod 51 are arranged crosswise, and a U-shaped structure is formed between the two side arms 522 and the main arm 521. Both the first limit bolt 523 and the second limit bolt 524 pass through the side arm 522 and are threadedly connected to the side arm 522. During debugging, the relative positions of the first limit bolt 523 and the second limit bolt 524 are adjusted to limit the rotation angle of the zero position linkage rod 51.

[0084] The main function of the force application source 53 is to apply an external force to the zero position linkage rod 51 so that the main shaft 223 maintains its initial state, so that the first zero position rod 351 can be inserted into the special-shaped hole 64 of the magnetic signal wheel 6 when the magnetization head mechanism 3 is in place. More specifically, the force application source 53 is a zero position cylinder, which is installed on the magnetization module seat 21 and is on the same side as the second limit bolt 524. When the piston rod of the zero position cylinder expands and contracts, the free end of the piston rod can abut against the zero position linkage rod 51.

[0085] Referring to Figure 12 and Figure 13, The main function of the energy storage source 54 is to store force when the force application source 53 applies force and release force when the force application source 53 stops applying force. More specifically, the energy storage source 54 includes a spring seat 541 fixed on the magnetizing module base 21 and on the same side as the first limit bolt 523, a zero-position spring 542 arranged inside the spring seat 541 with one end extending out of the spring seat 541 and always abutting against the cushion block 55, and an adjustable distance bolt member 543 installed on the side of the spring seat 541 away from the side where the zero-position spring 542 extends; the spring seat 541 is in the shape of a rectangular block, and a receiving cavity 5411 is machined inward from the side close to the zero-position linkage rod 51. The zero-position spring 542 is located in the receiving cavity 5411. A pair of mounting holes 5412 penetrating through itself for screw fixation are also machined on the spring seat 541; the adjustable distance bolt member 543 includes a bolt rod 5431 threadedly connected to the spring seat 541 with one end extending into the receiving cavity 5411, and a top head 5432 connected to the end of the bolt rod 5431 located inside the receiving cavity 5411 by taper fit. As needed, the degree of compression of the zero-position spring 542 can be adjusted by rotating the bolt rod 5431.

[0086] In the initial state, the piston rod of the force application source 53 abuts against the side wall of the zero-position linkage rod 51 near the free end, so that the zero-position linkage rod 51 contacts the first limit bolt 523 under the action of the force application source 53. At this time, there is an active gap between the zero-position linkage rod 51 and the second limit bolt 524, and the energy storage source 54 is in the state of storing force, that is, the zero-position spring 542 is compressed; when the piston rod of the force application source 53 contracts, the energy storage source 54 is in the state of releasing force, that is, the zero-position spring 542 pushes the zero-position linkage rod 51 through the cushion block 55 to drive the shaft seat 222 to rotate. During the rotation of the shaft seat 222, the main shaft 223 drives the magnetic signal wheel 6 to be magnetized to rotate accordingly until the zero-position linkage rod 51 contacts the second limit bolt 524. At this time, the inner wall of the special-shaped hole 64 of the magnetic signal wheel 6 abuts against the outer wall of the first zero-position rod 351, thereby eliminating the gap of zero-point positioning and ensuring the consistency of the magnetization angle of each magnetic signal wheel 6 and improving the magnetization accuracy.

[0087] The implementation principle of the embodiment of this application is as follows:

[0088] The first step: Place the magnetic signal wheel 6 to be magnetized on the support disk 2241;

[0089] The second step: Detect whether the magnetic signal wheel 6 to be magnetized is in place through the photoelectric sensor 24. If it is in place, start the guiding cylinder 41 to drive the magnetizing head mechanism 3 to descend;

[0090] The third step: During the process of driving the magnetizing head mechanism 3 to descend, detect whether the magnetizing head mechanism 3 is in place through the first proximity sensor 27, and detect whether the parallelism of the magnetic signal wheel 6 meets the requirements through the detection module 39;

[0091] Step 4: The piston rod of the force application source 53 contracts. Meanwhile, the energy storage source 54 pushes the zero-position linkage rod 51 to drive the main shaft 223 to rotate, so that the inner wall of the special-shaped hole 64 of the magnetic signal wheel 6 abuts against the outer wall of the first zero-position rod 351, eliminating the clearance of zero-point positioning;

[0092] Step 5: The annular magnetization head performs a magnetization operation on the magnetic signal wheel 6;

[0093] Step 6: After the magnetization is completed, the force application source 53 and the guiding air cylinder 41 are reset in sequence. After taking away the magnetic signal wheel 6, the process is repeated cyclically.

[0094] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A magnetization device for magnetizing a magnetic signal wheel, characterized in that: It includes a support frame (1), a magnetizing table mechanism (2) arranged below the support frame (1) for placing a magnetic signal wheel (6), a magnetizing head mechanism (3) located directly above the magnetizing table mechanism (2) for magnetizing the magnetic signal wheel (6), a driving source (4) installed on the support frame (1) to drive the lifting of the magnetizing head mechanism (3), and a zero position adjustment mechanism (5) arranged on the magnetizing table mechanism (2) for precisely positioning the magnetic signal wheel (6) to be magnetized; The magnetizing table mechanism (2) at least includes a horizontally arranged magnetizing module base (21) and a support assembly (22) arranged on the magnetizing module base (21); The support assembly (22) includes a shaft seat (222) vertically passing through the magnetizing module base (21) and rotatably connected to the magnetizing module base (21), a main shaft (223) fixedly connected to the shaft seat (222) and coaxially arranged with the shaft seat (222), a support cylinder (224) coaxially sleeved outside the main shaft (223) and fixedly connected to the shaft seat (222), and a support disk (2241) coaxially sleeved outside the main shaft (223) and fixedly connected to one end of the support cylinder (224) away from the shaft seat (222). A special-shaped hole (64) passing through the magnetic signal wheel (6) is provided on the support disk (2241), and a zero point limit pin (226) for positioning the magnetic signal wheel (6) is arranged; The magnetizing head mechanism (3) includes a tooling plate (31) detachably connected to a hanging plate (42), a positioning shaft (32) fixedly connected to the center of the side of the tooling plate (31) facing away from the hanging plate (42) and coaxially arranged with the main shaft (223), a transfer plate (33) sleeved on the positioning shaft (32) and rotatably adjustable relative to the tooling plate (31), a magnetization cylinder (34) fixed on the side of the transfer plate (33) facing away from the tooling plate (31), and an annular magnetization head embedded in the magnetization cylinder (34) for magnetizing; At the position of the end of the positioning shaft (32) away from the tooling plate (31) and facing the zero point limit pin (226), a zero position shaft (35) extending along the axial direction of the positioning shaft (32) is fixedly connected. The free end of the zero position shaft (35) is integrally connected with a first zero position rod (351) and a second zero position rod (352) coaxially arranged in sequence. The diameter of the first zero position rod (351) is larger than that of the second zero position rod (352) and smaller than the minimum diameter of the special-shaped hole (64) on the magnetic signal wheel (6); The zero position adjustment mechanism (5) includes a zero position linkage rod (51) with one end fixed on the shaft seat (222) and the other end horizontally extending in the direction away from the shaft seat (222), a limit seat (52) fixed on the magnetizing module base (21) for limiting the rotation angle of the zero position linkage rod (51), and a force application source (53) and a force storage source (54) fixed on the magnetizing module base (21) and located on both sides of the zero position linkage rod (51). A relief opening for one end of the zero position linkage rod (51) to extend into is provided at the position of the support cylinder (224) corresponding to the zero position linkage rod (51); The force storage source (54) stores force when the force applying source (53) applies force, releases the force when the force applying source (53) stops applying force, and drives the main shaft (223) to rotate through the zero position linkage rod (51) to eliminate the zero point positioning gap.

2. The magnetizing device for magnetizing a magnetic signal wheel according to claim 1, characterized in that: The zero point limit pin (226) is slidably inserted into the support plate (2241); a fixing block (227) is fixedly connected to one side of the support plate (2241) facing the shaft seat (222); a receiving groove (2271) is provided on the fixing block (227) at a position corresponding to the zero point limit pin (226); a compression spring (228) is provided in the receiving groove (2271), one end of the compression spring being connected to the zero point limit pin (226) and the other end of the compression spring being connected to the inner bottom wall of the receiving groove (2271).

3. The magnetizing device for magnetizing a magnetic signal wheel according to claim 1, characterized in that: The driving source (4) comprises a guide cylinder (41) mounted on a crossbeam of a support frame (1) and having a piston rod arranged vertically downward, and a hanging plate (42) fixed to the free end of the piston rod of the guide cylinder (41) and arranged horizontally, and the magnetizing head mechanism (3) is mounted on the hanging plate (42).

4. A magnetization device for magnetizing a magnetic signal wheel according to claim 1, characterized in that: A plurality of fastening bolts (36) are provided between the tooling plate (31) and the adapter plate (33) to connect the two. A slideway (312) is provided at a position corresponding to each fastening bolt (36) on the tooling plate (31) for the fastening bolt (36) to pass through and slide so that the adapter plate (33) can be rotated and adjusted relative to the tooling plate (31). The width of the slideway (312) is greater than the diameter of the rod body of the fastening bolt (36) and smaller than the diameter of the nut of the fastening bolt (36). The rod body of the fastening bolt (36) passes through the slideway (312) and is threadedly connected to the adapter plate (33). The nut of the fastening bolt (36) abuts against a side of the tooling plate (31) away from the adapter plate (33).

5. The magnetizing device for magnetizing a magnetic signal wheel according to claim 4, characterized in that: A fine-tuning component (9) is provided on the tooling plate (31) at a position away from the adapter plate (33) and close to the edge; The fine adjustment assembly (9) comprises a fixed seat (91) fixed on the tooling plate (31), a slide seat (92) arranged opposite to the fixed seat (91), a dial indicator (93) installed on the fixed seat (91) and with a measuring head always in contact with the slide seat (92), a guide block (923) fixed to the slide seat (92) and extending into the tooling plate (31), and a guide block (923) fixed to the guide block (923) away from one end of the slide seat (92) and extending to the adapter plate (33). A lever (924) is provided in the tooling plate (31), a guide groove (313) extending in the telescopic direction of the measuring head of the dial gauge (93) is processed at a position corresponding to the guide block (923), the guide block (923) slides in the guide groove (313), and a strip-shaped movable groove (331) perpendicular to the guide groove (313) is provided at a position corresponding to the lever (924) on the adapter plate (33) for the lever (924) to drive the adapter plate (33) to rotate; A fixing bolt (926) passes through the sliding seat (92). The screw rod of the fixing bolt (926) passes through the sliding seat (92) and is threadedly connected to the tooling plate (31). The nut of the fixing bolt (926) abuts against the sliding seat (92). A strip-shaped fixing groove (925) extending along the length direction of the guiding groove (313) is machined at the position of the sliding seat (92) corresponding to the fixing bolt (926).

6. The magnetizing device for magnetizing a magnetic signal wheel according to claim 1, characterized in that: The magnetizing head mechanism (3) further includes a detection module (39). The detection module (39) includes a detection plate (391) horizontally arranged directly below the positioning shaft (32) and inside the magnetization cylinder (34), a special-shaped plate (392) located between the tooling plate (31) and the hanging plate (42) and parallel to the detection plate (391), a guiding shaft (393) slidably passing through the positioning shaft (32) and the tooling plate (31) and fixedly connected to the detection plate (391) and the special-shaped plate (392) at both ends, and a return spring (394) connected between the positioning shaft (32) and the detection plate (391). There is an activity space between the detection plate (391) and the positioning shaft (32); On one side of the special-shaped plate (392), there is a lifting block (396) slidably mounted on the tooling plate (31) through a linear bearing (397). A first adjustment bolt (398) threadedly connected to itself passes through the lifting block (396). A vertical plate (399) extending axially along the positioning shaft (32) is fixedly connected to the plate surface of the special-shaped plate (392) close to the lifting block (396). One end of the vertical plate (399) far from the special-shaped plate (392) is fixedly connected to a horizontal plate (400) horizontally extending directly above the first adjustment bolt (398). A second proximity sensor (401) for detecting the parallelism of the magnetic signal wheel (6) by cooperating with the first adjustment bolt (398) is installed on the horizontal plate (400); A guide post (402) extending axially along the main shaft (223) is fixed on the magnetizing module seat (21). A second adjustment bolt (403) is threadedly connected to the free end of the guide post (402). A guide sleeve (404) for the guide post (402) to slide through to drive the lifting block (396) to rise is embedded and installed at the position of the tooling plate (31) below the lifting block (396).

7. A magnetization device for magnetizing a magnetic signal wheel according to claim 1, characterized in that: The limit seat (52) includes a main arm (521) fixed directly below the zero-position linkage rod (51) and cross-arranged with the zero-position linkage rod (51), side arms (522) integrally formed at both ends of the main arm (521) and located on both sides of the cushion block (55) respectively, and a first limit bolt (523) and a second limit bolt (524) respectively threadedly connected to the two side arms (522) and capable of moving relatively or away from each other for adjustment; The force application source (53) is a zero-position cylinder, which is on the same side as the second limit bolt (524); The energy storage source (54) includes a spring seat (541) fixed on the magnetizing module seat (21) and on the same side as the first limit bolt (523), and a zero-position spring (542) arranged inside the spring seat (541) and with one end extending out of the spring seat (541) and always abutting against the zero-position linkage rod (51).

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