Pointer indicator meter assembly system and assembly method

Abstract

The invention discloses a pointer indicator assembly system and an assembly method. The pointer indicator assembly system includes a transport line, a yoke installation device, a scale installation device, a magnetizing device and a positioning device. The transport line is used to transport the base of the pointer indicator. The yoke installation device is used to install the yoke ring of the pointer indicator on the base. The scale installation device is used to install the scale plate of the pointer indicator on the base equipped with the yoke ring. The magnetizing device is located downstream of the scale installation device in the transport direction of the base. The magnetizing device is used to magnetize the assembled pointer indicator. The positioning device is arranged on the transport line. The positioning device positions the base so that the base is aligned with the yoke installation device and the scale installation device in sequence. The pointer indicator assembly system can realize the automatic assembly of the yoke ring and the scale plate, and automatically magnetize the yoke ring, greatly improve the work efficiency, and reduce the labor cost and management cost.

Description

Technical Field

[0001] The invention relates to the technical field of instrument equipment, and in particular to an assembling system of a pointer indicator. Background Art

[0002] Normally, the yokes, scale plates and other parts of analog pointer meters such as current / voltage are manually assembled and require manual clamping to achieve magnetization. The labor productivity is relatively low. With the annual increase in output, the demand for personnel increases with the increase in output. It is difficult to recruit and manage personnel, and the market competition pressure is high. Therefore, an automated mechanism is needed to replace manual labor. Summary of the invention

[0003] The first purpose of the present invention is to propose a pointer indicator assembly system, which can realize automatic assembly of the yoke ring and the scale plate, and automatically magnetize the yoke ring, while ensuring that its function meets the process requirements of the product itself, greatly improving work efficiency and reducing labor costs and management costs.

[0004] The second object of the present invention is to provide an assembly method for a pointer indicator watch, which greatly improves work efficiency and reduces labor costs and management costs while ensuring that its functions meet the process requirements of the product itself.

[0005] In order to achieve the above technical effects, the technical solution of the present invention is as follows:

[0006] The invention discloses a pointer indicator assembly system, comprising: a transport line, which is used to transport a base of the pointer indicator; a yoke installation device, which is arranged on one side of the transport line and is used to install the yoke ring of the pointer indicator on the base; a scale installation device, which is located downstream of the yoke installation device in the transport direction of the base; the scale installation device is used to install the scale plate of the pointer indicator on the base equipped with the yoke ring; a magnetizing device, which is located downstream of the scale installation device in the transport direction of the base and is used to magnetize the assembled pointer indicator; and a positioning device, which is arranged on the transport line and is used to position the base so that the base is aligned with the yoke installation device and the scale installation device in sequence.

[0007] In some embodiments, the positioning device includes: a first position sensor, which is arranged on the side wall of the transport assembly line, the first position sensor is arranged corresponding to the yoke mounting device, and is used to sense the base; a first positioning module, which is arranged in the transport assembly line and corresponds to the first position sensor; wherein: when the first position sensor senses the base, the first positioning module can drive the base to detach from the transport assembly line and clamp the base.

[0008] In some specific embodiments, the transport line includes two transmission belt mechanisms that are spaced apart; the first positioning module includes: a first lifting component, the first lifting component is disposed between the two transmission belt mechanisms, and is used to drive the base to rise and fall so that the base is separated from the transmission belt mechanism; a first gear component, there are two first gear components, the two first gear components are located between the two transmission belt mechanisms, and are spaced apart along the transport direction of the transmission belt mechanism, and the first gear component is used to clamp the base; a first limit component, the first limit component is disposed on the side wall of the transport line, and the first limit component and the first position sensor are located on two oppositely disposed side walls of the transport line; wherein: when the first position sensor detects the base, the two first gear components move synchronously to clamp the base, the first lifting component drives the base to rise to separate from the transmission belt mechanism, and the first limit component pushes the base toward the side wall of the transport line to clamp the base.

[0009] In some more specific embodiments, the first lifting assembly, the first gear assembly and the first limit assembly all include a driving source and a movable part, the movable part is connected to the power output end of the driving source, and the movable part can be stopped on the bottom wall or side wall of the base.

[0010] In some embodiments, the yoke installation device includes: a yoke storage bin, which is arranged in parallel with the transport assembly line, and the yoke storage bin is used to store the yoke ring; a yoke installation module, which is located above the transport assembly line and includes a yoke drive assembly and a yoke grabbing assembly, and the yoke grabbing assembly is arranged at the power output end of the yoke drive assembly, and the yoke drive assembly is used to drive the yoke grabbing assembly to reciprocate between the yoke storage bin and the transport assembly line.

[0011] In some embodiments, the positioning device includes: a second position sensor, which is arranged on the side wall of the transport line, the second position sensor is arranged corresponding to the scale mounting device, and is used to sense the base; a second positioning module, which is arranged in the transport line and corresponds to the second position sensor; wherein: when the second position sensor senses the base, the second positioning module can drive the base to detach from the transport line and clamp the base.

[0012] In some specific embodiments, the transport line includes two transmission belt mechanisms arranged at intervals; the second positioning module includes: a second lifting component, the second lifting component is arranged between the two transmission belt mechanisms, and is used to drive the base to rise and fall so that the base is separated from the transmission belt mechanism; a second gear component, there are two second gear components, the two second gear components are located between the two transmission belt mechanisms, and are arranged at intervals along the transport direction of the transmission belt mechanism, and the second gear component is used to clamp the base; a second limiting component, the second limiting component is arranged on the side wall of the transport line, and the second limiting component and the second position sensor are located on two oppositely arranged side walls of the transport line; wherein: when the second position sensor detects the base, the two second gear components move synchronously to clamp the base, the second lifting component drives the base to rise to separate from the transmission belt mechanism, and the second limiting component pushes the base toward the side wall of the transport line to clamp the base.

[0013] In some embodiments, the scale installation device includes: a scale storage bin, which is arranged in parallel with the transport assembly line and is used to store the scale plate; a scale installation module, which is located above the transport assembly line and includes a scale drive assembly and a scale adsorption assembly, the scale adsorption assembly is arranged at the power output end of the scale drive assembly, and is used to drive the scale adsorption assembly to reciprocate between the scale storage bin and the transport assembly line; an installation storage bin, which is arranged in parallel with the transport assembly line and is used to store the mounting parts connecting the scale plate and the base; an installation locking module, which is used to install the mounting parts to the scale plate and the base and lock them.

[0014] In some specific embodiments, the scale installation device also includes a scale temporary storage table, which is used to temporarily store the scale plate. There are two scale adsorption components arranged at intervals. When the scale driving component drives the scale adsorption components to move, one scale adsorption component reciprocates between the scale temporary storage table and the transport assembly line, and the other scale adsorption component reciprocates between the scale temporary storage table and the scale storage bin.

[0015] In some embodiments, the magnetizing device includes: a third position sensor, the third position sensor is used to detect the position of the base; a magnetizing positioning module, the number of the magnetizing positioning modules is two, the two magnetizing positioning modules are arranged at intervals, the magnetizing positioning module includes a magnetizing driving part and a magnetizing movable part, the magnetizing movable part is connected to the power output end of the magnetizing driving part, the magnetizing driving part drives the magnetizing movable part to move toward or away from the base, and the magnetizing movable part is connected to an external magnetizing device.

[0016] The present invention also discloses a pointer indicator meter assembly method using the pointer indicator meter assembly system described above, comprising: placing the base of the pointer indicator meter on a transport line; a positioning device detects that the base is aligned with a yoke installation device, and the yoke installation device installs the yoke ring of the pointer indicator meter on the base; the transport line transports the base to a circuit board installation station, and manually installs the circuit board of the pointer indicator meter on the base; the positioning device detects that the base is aligned with a scale installation device, and the scale installation device installs the scale plate of the pointer indicator meter on the base; the transport line transports the base to a bracket installation station, and manually installs the bracket of the pointer indicator meter on the base; the positioning device detects that the base is aligned with a magnetizing device, and the magnetizing device magnetizes the yoke ring.

[0017] The beneficial effects of the pointer indicator assembly system of the present invention are as follows: in actual work, the base of the pointer indicator is transported to the yoke installation device through the transport line and positioned by the positioning device, and the yoke ring is placed in the base to complete the automatic assembly; the assembled components are transported to the position corresponding to the scale installation device through the transport line, and the scale plate is placed on the base after being positioned by the positioning device to complete the automatic assembly; the assembled components are transported to the position corresponding to the magnetizing device through the transport line to complete the automatic magnetization. Thus, the pointer indicator assembly system can realize the automatic assembly of the yoke ring and the scale plate, and automatically magnetize the yoke ring, greatly improving the work efficiency and reducing the labor cost and management cost under the premise of ensuring that its function meets the process requirements of the product itself.

[0018] The beneficial effects of the pointer indicator assembly method of the present invention are as follows: in actual work, the base of the pointer indicator is connected to the yoke installation device, the circuit board installation station, the scale installation device, the bracket installation station and the magnetizing device, so that relatively simple parts such as the yoke ring and the scale plate can be automatically assembled, and complex parts such as the circuit board and the bracket can be manually assembled, and the yoke ring can be automatically magnetized. Under the premise of ensuring that its function meets the process requirements of the product itself, the work efficiency is greatly improved and the labor cost and management cost are reduced.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a pointer indicator meter assembly system according to an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a pointer indicator assembly system at a yoke mounting device according to an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 The enlarged schematic diagram of the circled A;

[0023] Figure 4 is a structural schematic diagram of the first positioning module of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the pointer indicator meter assembly system at the scale installation device of an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 The enlarged schematic diagram of the circled B;

[0026] Figure 7 yes Figure 5 A schematic diagram of a partial structure of the structure shown;

[0027] Figure 8 is a structural schematic diagram of the second positioning module of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the pointer indicator meter assembly system at the magnetizing device of an embodiment of the present invention;

[0029] Fig.10 yes Fig. 9 A schematic diagram of a local structure of the structure shown;

[0030] Fig.11 It is a schematic diagram of the structure of a pointer indicator table;

[0031] Fig.12 It is a schematic diagram of the decomposed structure of the pointer indicator table;

[0032] Reference numerals:

[0033] 1. Transportation line;

[0034] 2. yoke installation device; 21. yoke storage bin; 22. yoke installation module; 221. yoke drive assembly; 2211. first yoke drive member; 2212. second yoke drive member; 222. yoke grab assembly;

[0035] 3. Scale installation device; 31. Scale storage bin; 32. Scale installation module; 321. Scale drive assembly; 3211. First scale drive member; 3212. Second scale drive member; 322. Scale adsorption assembly; 33. Install storage bin; 34. Install locking module; 35. Scale temporary storage station;

[0036] 4. magnetizing device; 41. third position sensor; 42. magnetizing positioning module; 421. magnetizing driving member; 422. magnetizing movable member; 43. magnetizing stopper module;

[0037] 5. Positioning device; 51. First position sensor; 52. First positioning module; 521. First lifting assembly; 522. First gear assembly; 523. First limit assembly; 53. Second position sensor; 54. Second positioning module; 541. Second lifting assembly; 542. Second gear assembly; 543. Second limit assembly;

[0038] 6. Circuit board installation station; 7. Dust removal station; 8. Bracket installation station;

[0039] 110. Base; 120. yoke ring; 130. scale plate; 140. bracket; 150. mounting part. DETAILED DESCRIPTION

[0040] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Reference below Figure 1-Figure 12 A pointer indicator watch assembling system according to an embodiment of the present invention is described.

[0045] First of all, it should be noted that Figure 11-Figure 12 As shown, the pointer indicator includes a base 110, a yoke ring 120, a scale plate 130, a bracket 140 and a mounting member 150. The yoke ring 120, the scale plate 130 and the bracket 140 are all arranged on the base, and the scale plate 130 is locked on the base 110 through the mounting member 150.

[0046] The present invention discloses a pointer indicator meter assembly system, such as Figure 1As shown, the pointer indicator assembly system includes a transport line 1, a yoke installation device 2, a scale installation device 3, a magnetizing device 4 and a positioning device 5. The transport line 1 is used to transport the base 110 of the pointer indicator. The yoke installation device 2 is arranged on one side of the transport line 1 and is used to install the yoke ring 120 of the pointer indicator on the base 110. The scale installation device 3 is located downstream of the yoke installation device 2 in the transport direction of the base 110. The scale installation device 3 is used to install the scale plate 130 of the pointer indicator on the base 110 equipped with the yoke ring 120. The magnetizing device 4 is located downstream of the scale installation device 3 in the transport direction of the base 110. The magnetizing device 4 is used to magnetize the assembled pointer indicator. The positioning device 5 is arranged on the transport line 1. The positioning device 5 is used to position the base 110 so that the base 110 is aligned with the yoke installation device 2 and the scale installation device 3 in sequence.

[0047] It can be understood that in the actual working process, the base 110 of the pointer indicator is loaded into the transport line 1, transported to the yoke installation device 2 through the transport line 1, and positioned by the positioning device 5. The yoke ring 120 is placed in the base 110 to complete the automatic assembly; the assembled components are transported by the transport line 1 to the position corresponding to the scale installation device 3, and the scale plate 130 is placed on the base 110 after being positioned by the positioning device 5 to complete the automatic assembly; the assembled components are transported by the transport line 1 to the position corresponding to the magnetizing device 4 to complete the automatic magnetization. Therefore, the assembly system of the pointer indicator can realize the automatic assembly of the yoke ring 120 and the scale plate 130, and automatically magnetize the yoke ring 120, which greatly improves the work efficiency and reduces the labor cost and management cost under the premise of ensuring that its function meets the process requirements of the product itself.

[0048] It should be noted that the actual pointer indicator also includes a circuit board and a bracket 140 for supporting the pointer. The structures of these two parts are relatively complex. If an automatic installation method is adopted, the complexity of the entire pointer indicator assembly system will be increased. Therefore, in some embodiments, the pointer indicator assembly system of this embodiment also includes a circuit board installation station 6, a dust removal station 7 and a bracket installation station 8. The circuit board installation station 6 is located between the yoke installation device 2 and the scale installation device 3, the dust removal station 7 is located between the circuit board installation station 6 and the scale installation device 3, and the bracket installation station 8 is located between the scale installation device 3 and the magnetizing device 4. Among them, there are relevant staff at the circuit board installation station 6 and the bracket installation station 8 to realize the installation of the circuit board and the bracket 140, and the dust removal station 7 is provided with a cleaning nozzle to realize the cleaning of the base 110 with the yoke ring 120 installed.

[0049] refer to Figure 2As shown, the positioning device 5 includes a first position sensor 51 and a first positioning module 52. The first position sensor 51 is arranged on the side wall of the transport line 1. The first position sensor 51 is arranged corresponding to the yoke mounting device 2 and is used to sense the base 110. The first positioning module 52 is arranged in the transport line 1 and is arranged corresponding to the first position sensor 51. When the first position sensor 51 senses the base 110, the first positioning module 52 can drive the base 110 to detach from the transport line 1 and clamp the base 110. It should be noted here that in order to ensure the stable installation of the base 110 and the yoke ring 120, when installing the yoke ring 120, it is necessary to ensure that the base 110 and the yoke mounting device 2 have a relatively fixed position, and the base 110 cannot be driven by the transport line 1 during the installation process. In the present embodiment, the first position sensor 51 is arranged corresponding to the yoke mounting device 2, that is, when the transport line 1 drives the base 110 to move to a position corresponding to the position of the first position sensor 51, the first position sensor 51 will feed back the position information of the base 110 to the control system. At this time, the first positioning module 52 starts to drive the base 110 to detach from the transport line 1 and clamp the base 110, so that the base 110 is in a relatively fixed position to facilitate the yoke mounting device 2 to place the yoke ring 120 on the base 110, thereby ensuring that the yoke ring 120 can be stably and accurately installed on the base 110.

[0050] Further, the transport line 1 includes two transmission belt mechanisms that are spaced apart. The first positioning module 52 includes a first lifting component 521, a first gear component 522 and a first limit component 523. The first lifting component 521 is disposed between the two transmission belt mechanisms and is used to drive the base 110 to lift and lower so that the base 110 is separated from the transmission belt mechanism. There are two first gear components 522, and the two first gear components 522 are located between the two transmission belt mechanisms and are spaced apart along the transport direction of the transmission belt mechanism. The first gear component 522 is used to clamp the base 110. The first limit component 523 is disposed on the side wall of the transport line 1, and the first limit component 523 and the first position sensor 51 are located on two oppositely disposed side walls of the transport line 1. When the first position sensor 51 detects the base 110, the two first gear assemblies 522 move synchronously to clamp the base 110, the first lifting assembly 521 drives the base 110 to rise to disengage from the transmission belt mechanism, and the first limiting assembly 523 pushes the base 110 toward the side wall of the transport line 1 to clamp the base 110.

[0051] It is understandable that, in the actual working process, after the first position sensor 51 detects the base 110, the two first gear components 522 act simultaneously to stop the base 110 (the function of the first gear component 522 located downstream) and prevent the base 110 behind from squeezing the base 110 located at the assembly position (the function of the first gear component 522 located upstream). When the base 110 is stopped, the first lifting component 521 acts to lift the base 110 to detach from the transmission belt mechanism; when the base 110 is initially positioned, the first limiting component 523 acts to tighten the base 110 from the side to completely position the base 110. In other words, one of the multiple bases 110 arranged on the transmission belt mechanism is separated by the first gear component 522, and is separated from the transmission belt mechanism by the first lifting component 521. Finally, the first limiting component 523 is used to position the base 110 so that it remains in a stable position, thereby facilitating the placement of the yoke ring 120 and improving the installation accuracy of the yoke ring 120 and the base 110.

[0052] Furthermore, the first lifting assembly 521, the first gear assembly 522 and the first limit assembly 523 all include a driving source and a movable part, the movable part is connected to the power output end of the driving source, and the movable part can be stopped on the bottom wall or side wall of the base 110. Therefore, compared with the power output end of the driving source directly stopping on the bottom wall or side wall of the base 110, the additional movable part in this embodiment can be designed according to the appearance characteristics of the base 110 to achieve a more secure positioning of the base 110. It can also buffer the collision between the power output end of the driving source and the base 110, thereby protecting the driving source and the movable part.

[0053] Optionally, the driving sources are all cylinders, and a sensing switch is provided on the cylinder to sense the position of the cylinder, thereby achieving accurate positioning of the base 110. Of course, in other embodiments of the present invention, the driving source can select other driving mechanisms according to actual needs, such as electric cylinders, stepper motors, servo motors, etc., and is not limited to the cylinder of this embodiment.

[0054] refer to Figure 2-Figure 3 As shown, the yoke installation device 2 includes a yoke storage bin 21 and a yoke installation module 22. The yoke storage bin 21 is arranged in parallel with the transport assembly line 1. The yoke storage bin 21 is used to store the yoke ring 120. The yoke installation module 22 is located above the transport assembly line 1 and includes a yoke drive assembly 221 and a yoke grabbing assembly 222. The yoke grabbing assembly 222 is arranged at the power output end of the yoke drive assembly 221. The yoke drive assembly 221 is used to drive the yoke grabbing assembly 222 to reciprocate between the yoke storage bin 21 and the transport assembly line 1.

[0055] Optionally, the yoke drive assembly 221 includes a first yoke drive member 2211 and a second yoke drive member 2212, the power output end of the first yoke drive member 2211 is connected to the second yoke drive member 2212, the power output end of the second yoke drive member 2212 is connected to the yoke grab assembly 222, the first yoke drive member 2211 is used to drive the second yoke drive member 2212 and the yoke grab assembly 222 to move in a direction perpendicular to the transportation direction of the base 110, and the second yoke drive member 2212 is used to drive the yoke grab assembly 222 to rise or fall. It can be understood that the first yoke drive member 2211 can ensure that the yoke grab assembly 222 stably moves between the yoke storage bin 21 and the base 110, so as to ensure that the yoke grab assembly 222 can accurately align with the yoke ring 120 output by the yoke storage bin 21 and the base 110 positioned by the first positioning module 52. The second yoke driving member 2212 ensures that the yoke grabbing assembly 222 can move to a position in contact with the yoke ring 120 to thereby capture and release the yoke ring 120 .

[0056] Optionally, the first yoke driving member 2211 and the second yoke driving member 2212 are both cylinders, and the yoke grabbing assembly 222 is a pneumatic clamp. In addition, both the cylinder and the cylinder clamp are provided with an induction switch to ensure the movement accuracy of the cylinder. Of course, in other embodiments of the present invention, the first yoke driving member 2211, the second yoke driving member 2212 and the yoke grabbing assembly 222 can be selected according to actual needs, such as an electric cylinder, a stepper motor or a servo motor, and are not limited to a cylinder.

[0057] refer to Figure 5-Figure 6As shown, the positioning device 5 includes a second position sensor 53 and a second positioning module 54. The second position sensor 53 is arranged on the side wall of the transport line 1. The second position sensor 53 is arranged corresponding to the scale installation device 3 and is used to sense the base 110. The second positioning module 54 is arranged in the transport line 1 and is arranged corresponding to the second position sensor 53. When the second position sensor 53 senses the base 110, the second positioning module 54 can drive the base 110 to detach from the transport line 1 and clamp the base 110. It should be noted here that in order to ensure the stable installation of the base 110 and the scale plate 130, it is necessary to ensure that the base 110 and the yoke installation device 2 have a relatively fixed position when installing the scale plate 130, and the base 110 cannot be driven by the transport line 1 during the installation process. In the present embodiment, the second position sensor 53 is arranged corresponding to the scale installation device 3, that is, when the transport line 1 drives the base 110 to move to the position corresponding to the second position sensor 53, the second position sensor 53 will feed back the position information of the base 110 to the control system. At this time, the second positioning module 54 starts to drive the base 110 to detach from the transport line 1 and clamp the base 110, so that the base 110 is in a relatively fixed position, which is convenient for the scale installation device 3 to place the scale plate 130 on the base 110, thereby ensuring that the scale plate 130 can be stably and accurately installed on the base 110.

[0058] Furthermore, the transport line 1 includes two transmission belt mechanisms arranged at intervals; Figure 8 As shown, the second positioning module 54 includes a second lifting component 541, a second gear component 542 and a second limit component 543. The second lifting component 541 is arranged between the two transmission belt mechanisms and is used to drive the base 110 to rise and fall so that the base 110 is separated from the transmission belt mechanism. There are two second gear components 542, and the two second gear components 542 are located between the two transmission belt mechanisms and are arranged at intervals along the transportation direction of the transmission belt mechanism. The second gear component 542 is used to clamp the base 110. The second limit component 543 is arranged on the side wall of the transportation line 1, and the second limit component 543 and the second position sensor 53 are located on two oppositely arranged side walls of the transportation line 1. When the second position sensor 53 detects the base 110, the two second gear components 542 move synchronously to clamp the base 110, the second lifting component 541 drives the base 110 to rise to separate from the transmission belt mechanism, and the second limit component 543 pushes the base 110 to move toward the side wall of the transportation line 1 to clamp the base 110.

[0059] It is understandable that, in the actual working process, after the second position sensor 53 detects the base 110, the two second gear components 542 act simultaneously to stop the base 110 (the function of the second gear component 542 located downstream) and prevent the base 110 behind from squeezing the base 110 located at the assembly position (the function of the second gear component 542 located upstream). When the base 110 is stopped, the second lifting component 541 acts to lift the base 110 to detach from the transmission belt mechanism; when the base 110 is initially positioned, the second limiting component 543 acts to tighten the base 110 from the side to completely position the base 110. In other words, one of the multiple bases 110 arranged on the transmission belt mechanism is separated by the second gear component 542, and is separated from the transmission belt mechanism by the second lifting component 541. Finally, the second limiting component 543 is used to position the base 110 so that it remains in a stable position, thereby facilitating the placement of the scale plate 130 and improving the installation accuracy of the scale plate 130 and the base 110.

[0060] Furthermore, the second lifting assembly 541, the second gear assembly 542 and the second limit assembly 543 all include a driving source and a movable part, the movable part is connected to the power output end of the driving source, and the movable part can be stopped on the bottom wall or side wall of the base 110. Therefore, compared with the power output end of the driving source directly stopping on the bottom wall or side wall of the base 110, the additional movable part in this embodiment can be designed according to the appearance characteristics of the base 110 to achieve a more secure positioning of the base 110. It can also buffer the collision between the power output end of the driving source and the base 110, thereby protecting the driving source and the movable part.

[0061] Optionally, the driving source is a cylinder, and a sensing switch is provided on the cylinder to sense the position of the cylinder, thereby achieving accurate positioning of the base 110. Of course, in other embodiments of the present invention, the driving source can select other driving mechanisms according to actual needs, such as an electric cylinder, a stepper motor, a servo motor, etc., and is not limited to the cylinder of this embodiment.

[0062] refer to Figure 5-Figure 7As shown, the scale installation device 3 includes a scale storage bin 31, a scale installation module 32, an installation storage bin 33 and an installation locking module 34. The scale storage bin 31 is arranged in parallel with the transport line 1 and is used to store the scale plate 130. The scale installation module 32 is located above the transport line 1 and includes a scale drive component 321 and a scale adsorption component 322. The scale adsorption component 322 is arranged at the power output end of the scale drive component 321 and is used to drive the scale adsorption component 322 to reciprocate between the scale storage bin 31 and the transport line 1. The installation storage bin 33 is arranged in parallel with the transport line 1 and is used to store the installation member 150 connecting the scale plate 130 and the base 110. The installation locking module 34 is used to install the installation member 150 on the scale plate 130 and the base 110 and lock it. It can be understood that after the second positioning module 54 positions the base 110, the scale drive component 321 drives the scale adsorption component 322 to move toward the scale storage bin 31, adsorbs the scale plate 130 output from the scale storage bin 31 and transports it to the base 110, and then installs the locking module 34 to install the mounting component 150 on the scale plate 130 and the base 110 for locking, so that the scale plate 130 and the base 110 can be accurately and stably installed.

[0063] Furthermore, if Figure 6 As shown, the scale installation device 3 also includes a scale temporary storage table 35, which is used to temporarily store the scale plate 130. There are two scale adsorption components 322 arranged at intervals. When the scale driving component 321 drives the scale adsorption components 322 to move, one scale adsorption component 322 reciprocates between the scale temporary storage table 35 and the transport assembly line 1, and the other scale adsorption component 322 reciprocates between the scale temporary storage table 35 and the scale storage bin 31. It can be understood that the additional scale temporary storage table 35 can temporarily store the scale plate 130 therein. When the base 110 has not been transported over, the scale plate 130 can be temporarily kept on the scale temporary storage table 35. When the base 110 is fixed by the second positioning module 54, the scale plate 130 can be moved to the base 110 under the drive of the scale adsorption component 322. This shortens the movement distance of the scale plate 130 and can accelerate the installation process of the entire scale plate 130 to a certain extent, thereby improving the assembly efficiency of the pointer indicator.

[0064] Optionally, the scale drive assembly 321 includes a first scale drive member 3211 and a second scale drive member 3212, the power output end of the first scale drive member 3211 is connected to the second scale drive member 3212, the power output end of the second scale drive member 3212 is connected to the scale adsorption assembly 322, the first scale drive member 3211 is used to drive the second scale drive member 3212 and the scale adsorption assembly 322 to move in a direction perpendicular to the transportation direction of the base 110, and the second scale drive member 3212 is used to drive the scale adsorption assembly 322 to rise or fall. It can be understood that the first scale drive member 3211 can ensure that the scale adsorption assembly 322 stably moves between the scale storage bin 31 and the base 110, so as to ensure that the scale adsorption assembly 322 can accurately align with the scale plate 130 output by the scale storage bin 31 and the base 110 positioned by the second positioning module 54. The second scale driving member 3212 ensures that the scale adsorption assembly 322 can move to a position in contact with the scale plate 130 so as to capture and release the scale plate 130 .

[0065] Optionally, the first scale driving member 3211 and the second scale driving member 3212 are both cylinders, and the scale adsorption assembly 322 is a pneumatic suction cup. In addition, both the cylinder and the pneumatic suction cup are provided with induction switches to ensure the movement accuracy of the cylinder. Of course, in other embodiments of the present invention, the first scale driving member 3211, the second scale driving member 3212 and the scale adsorption assembly 322 can be selected according to actual needs, such as an electric cylinder, a stepper motor or a servo motor, and are not limited to cylinders.

[0066] refer to Figure 9-10 As shown, the magnetizing device 4 includes a third position sensor 41 and a magnetizing positioning module 42. The third position sensor 41 is used to detect the position of the base 110. There are two magnetizing positioning modules 42, and the two magnetizing positioning modules 42 are arranged at intervals. The magnetizing positioning module 42 includes a magnetizing driving member 421 and a magnetizing movable member 422. The magnetizing movable member 422 is connected to the power output end of the magnetizing driving member 421. The magnetizing driving member 421 drives the magnetizing movable member 422 to move in a direction close to or away from the base 110. The magnetizing movable member 422 is connected to an external magnetizing device. It can be understood that in the actual working process, when the third position sensor 41 detects the base 110, the two magnetizing driving members 421 drive the magnetizing movable members 422 to move in a direction close to each other and clamp the base 110. Since the magnetizing movable member 422 is connected to an external magnetizing device, automatic magnetization can be achieved after the base 110 is clamped.

[0067] Furthermore, if Fig. 9As shown, the magnetizing device 4 further includes a magnetizing stop module 43, which is arranged on the transport assembly line 1 and is used to stop the base 110. It can be understood that when the third position sensor 41 detects the position of the base 110, the magnetizing stop module 43 acts to stop the moving base 110, and then the two magnetizing driving members 421 drive the magnetizing movable members 422 to move in a direction close to each other and clamp the base 110, thus ensuring that the base 110 can be accurately positioned by the magnetizing device 4 to achieve automatic magnetization.

[0068] It should be noted that the magnetizing stop module 43 and the magnetizing drive component 421 can both use a cylinder, an electric cylinder or other linear drive structures, and no specific limitation is made to the magnetizing stop module 43 and the magnetizing drive component 421.

[0069] The present invention also discloses a pointer indicator meter assembly method using the pointer indicator meter assembly system described above, comprising:

[0070] S1, placing the base 110 of the pointer indicator on the transport line 1;

[0071] S2, the positioning device 5 detects that the base 110 is aligned with the yoke mounting device 2, and the yoke mounting device 2 mounts the yoke ring 120 of the pointer indicator onto the base 110;

[0072] S3, the transport line 1 transports the base to the circuit board installation station 6, and manually installs the circuit board of the pointer indicator on the base 110;

[0073] S4, the positioning device 5 detects that the base 110 is aligned with the scale installation device 3, and the scale installation device 3 installs the scale plate 130 of the pointer indicator onto the base 110;

[0074] S5, the transport line 1 transports the base to the bracket installation station 8, and manually installs the bracket 140 of the pointer indicator on the base 110;

[0075] S6 , the positioning device 5 detects that the base 110 is aligned with the magnetizing device 4 , and the magnetizing device 4 magnetizes the magnetic yoke ring 120 .

[0076] In actual work, the base of the pointer indicator meter is connected to the yoke installation device, the circuit board installation station, the scale installation device, the bracket installation station and the magnetizing device, so that relatively simple parts such as the yoke ring and the scale plate can be automatically assembled, and complex parts such as the circuit board and the bracket can be manually assembled. In addition, the yoke ring can be automatically magnetized, which greatly improves work efficiency and reduces labor cost and management cost while ensuring that its function meets the process requirements of the product itself.

[0077] Specifically, the detailed workflow of the pointer indicator table assembly method of this embodiment is as follows:

[0078] S1, placing the base 110 of the pointer indicator on the transport line 1;

[0079] S2, the positioning device 5 detects that the base 110 is aligned with the yoke mounting device 2, and the yoke mounting device 2 mounts the yoke ring 120 of the pointer indicator onto the base 110;

[0080] Specifically:

[0081] S21: The base 110 is loaded into the transmission belt mechanism and transported to the yoke installation device 2 by the transmission belt mechanism, where it is positioned by the first positioning module 52 and waits to be assembled with the yoke ring 120;

[0082] More specific steps are as follows:

[0083] S211: After the first position sensor 51 detects the base 110, the two first gear assemblies 522 act simultaneously (the piston rod of the cylinder extends), stopping the base 110 (the function of the first gear assembly 522 located downstream) and preventing the base 110 behind from squeezing the base 110 located at the assembly position (the function of the first gear assembly 522 located upstream).

[0084] S212: When the base 110 is stopped, the first lifting assembly 521 is actuated (the piston rod of the cylinder is extended), and the base 110 is lifted to be separated from the transmission belt mechanism, and the base 110 is positioned in a direction perpendicular to the transmission direction of the transmission belt mechanism by using the shape characteristics of the base 110;

[0085] S213: After the base 110 is initially positioned, the first limiting assembly 523 is actuated (the piston rod of the cylinder is extended), and the base 110 is pressed from the side to completely position the base 110.

[0086] S22: The yoke ring 120 is taken out from the yoke storage bin 21 and placed into the positioned base 110, completing the automatic assembly;

[0087] More specific steps are as follows:

[0088] S221: After the yoke sensor at the exit of the yoke storage bin 21 senses that the yoke ring 120 is output from the yoke storage bin 21, the first yoke driving member 2211 moves horizontally to the top of the output yoke ring 120.

[0089] S222: the second yoke driving member 2212 descends so that the yoke grabbing assembly 222 extends into the yoke ring 120;

[0090] S223: the yoke grabbing assembly 222 tightens the yoke ring 120 from the inner wall to achieve grabbing, and after the grabbing is completed, the second yoke driving member 2212 rises;

[0091] S224: the first magnetic yoke driving member 2211 moves horizontally to the position directly above the positioned base 110;

[0092] S225: the second yoke driving member 2212 descends so that the yoke ring 120 is placed in the base 110;

[0093] S226: the yoke grabbing assembly 222 releases the yoke ring 120, and after the release is completed, the second yoke driving member 2212 rises;

[0094] S3, the transport line 1 transports the base to the circuit board installation station 6, and manually installs the circuit board of the pointer indicator on the base 110;

[0095] Specifically:

[0096] S31: After the yoke ring 120 is assembled, the first limit assembly 523, the first lifting assembly 521 and the first shift assembly 522 are operated successively to release the base 110 so that the base 110 with the yoke ring 120 installed is returned to the transmission belt mechanism;

[0097] S32: The transmission belt mechanism continues to transport the base 110 to move it to the circuit board installation station 6, and after arriving at the circuit board installation station 6, the circuit board is manually assembled;

[0098] S33: After the circuit board is assembled, it moves to the dust removal station 7 through the transmission belt mechanism for automatic dust removal;

[0099] S4, the positioning device 5 detects that the base 110 is aligned with the scale installation device 3, and the scale installation device 3 installs the scale plate 130 of the pointer indicator onto the base 110;

[0100] Specifically

[0101] S41: After dust removal is completed, the conveyor belt mechanism moves to a position corresponding to the scale installation device 3, and is positioned by the second positioning module 54, waiting to be assembled with the scale plate 130;

[0102] More specific steps are as follows:

[0103] S411: After the second position sensor 53 detects the base 110, the two second gear assemblies 542 act simultaneously (the piston rods of the cylinders extend), stopping the base 110 (the function of the second gear assembly 542 located downstream) and preventing the rear base 110 from squeezing the base 110 located at the assembly position (the function of the second gear assembly 542 located upstream);

[0104] S412: When the base 110 is stopped, the second lifting assembly 541 is actuated (the piston rod of the cylinder is extended), and the base 110 is lifted up to be separated from the transmission belt mechanism, and the base 110 is positioned in a direction perpendicular to the transmission direction of the transmission belt mechanism by using the shape characteristics of the base 110;

[0105] S413: After the base 110 is initially positioned, the second limiting assembly 543 is actuated (the piston rod of the cylinder is extended) to tighten the base 110 from the side so that the base 110 is completely positioned.

[0106] S42, the scale plate 130 is transported to the assembly position by the scale installation module 32 for automatic assembly;

[0107] More specific steps are as follows:

[0108] S421: The first scale driving member 3211 drives the two scale adsorption components 322 to descend, so that the two scale adsorption components 322 adsorb the scale plates 130 located on the scale temporary storage platform 35 and the scale storage bin 31 respectively, and then the first scale driving member 3211 drives the two scale adsorption components 322 to ascend;

[0109] S422: The second scale driving member 3212 drives the two scale adsorption components 322 to move horizontally, so that the scale adsorption component 322 aligned with the scale temporary storage table 35 moves to the top of the base 110, and the scale adsorption component 322 aligned with the scale storage bin 31 moves to the top of the scale temporary storage table 35;

[0110] S423: The first scale driving member 3211 drives the two scale adsorption components 322 to descend, so that the two scale adsorption components 322 respectively install the adsorbed scale plate 130 on the base 110 and the scale temporary storage table 35, and then the first scale driving member 3211 rises again;

[0111] S424: If there is no mounting part 150 (mounting screw) on the locking module 34 at this time, install the storage bin 33 (screw machine) to output the mounting part 150 (mounting screw). After the output is completed, install the locking module 34 to fix the mounting part 150 on the base 110 to install the scale plate 130 on the base 110.

[0112] It should be noted that in the actual production process, there may be no scale plate 130 on the scale temporary storage table 35. Therefore, a scale sensor can be set on the scale temporary storage table 35 to detect the scale plate 130. If there is no scale plate 130 on the scale temporary storage table 35, before the second positioning module 54 positions the base 110, the first scale driving member 3211 and the second scale driving member 3212 are actuated to move the scale plate 130 in the scale storage bin 31 to the scale temporary storage table 35.

[0113] S5, the transport line 1 transports the base to the bracket installation station 8, and manually installs the bracket 140 of the pointer indicator on the base 110;

[0114] Specifically:

[0115] S51: After the scale plate 130 is assembled, the second limit assembly 543, the second lifting assembly 541 and the second shift assembly 542 are operated successively to release the base 110 so that the base 110 on which the yoke ring 120, the circuit board and the scale plate 130 are installed returns to the transmission belt mechanism;

[0116] S52: The transmission belt mechanism continues to transport the base 110 to move it to the bracket 140 installation work, and after arriving at the bracket installation station 8, the bracket 140 is manually assembled;

[0117] S6 , the positioning device 5 detects that the base 110 is aligned with the magnetizing device 4 , and the magnetizing device 4 magnetizes the magnetic yoke ring 120 .

[0118] Specifically:

[0119] S61: When the third position sensor 41 detects the base 110, the magnetizing stop module 43 is actuated to stop the base 110;

[0120] S62: The two magnetizing driving members 421 drive the magnetizing movable members 422 to move toward each other and clamp the base 110;

[0121] S63: The magnetizing device is started to realize magnetization;

[0122] S7. After the automatic magnetization is completed, the material is transported to the finished product collection area through the transmission belt mechanism.

[0123] Specifically:

[0124] S71; the two magnetized driving members 421 drive the magnetized movable members 422 to move away from each other and release the base 110;

[0125] S72, the magnetizing stopper module 43 is actuated to release the base 110, so that the base 110 enters the finished product collection area under the conveyance of the transmission belt mechanism.

[0126] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0127] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A pointer indicator meter assembly system, characterized in that: include: A transport line (1), the transport line (1) being used to transport a base (110) of a pointer indicator; A yoke installation device (2), the yoke installation device (2) being arranged on one side of the transport line (1) and being used to install the yoke ring (120) of the pointer indicator onto the base (110), the yoke installation device (2) comprising a yoke storage bin (21) and a yoke installation module (22), the yoke storage bin (21) being arranged in parallel with the transport line (1), the yoke storage bin (21) being used to store the yoke ring (120), and the yoke installation module (22) being located above the transport line (1); A scale installation device (3), the scale installation device (3) being located downstream of the yoke installation device (2) in the transport direction of the base (110); the scale installation device (3) being used to install the scale plate (130) of the pointer indicator onto the base (110) equipped with the yoke ring (120); the scale installation device (3) comprising a scale storage bin (31), a scale installation module (32), an installation storage bin (33) and an installation locking module (34). 4), the scale storage bin (31) is arranged in parallel with the transport line (1) and is used to store the scale plate (130), the installation storage bin (33) is arranged in parallel with the transport line (1) and is used to store the installation member (150) connecting the scale plate (130) and the base (110), and the installation locking module (34) is used to install the installation member (150) on the scale plate (130) and the base (110) and lock them; a magnetizing device (4), the magnetizing device (4) being located downstream of the scale mounting device (3) in the transport direction of the base (110), the magnetizing device (4) being used to magnetize the assembled pointer indicator; A positioning device (5), the positioning device (5) being arranged on the transport assembly line (1), the positioning device (5) being used to position the base (110) so that the base (110) is aligned with the yoke mounting device (2) and the scale mounting device (3) in sequence; The pointer indicator assembly system also includes a circuit board installation station (6) and a bracket installation station (8), wherein the circuit board installation station (6) is located between the yoke installation device (2) and the scale installation device (3), and the bracket installation station (8) is located between the scale installation device (3) and the magnetizing device (4).

2. The pointer indicator watch assembly system according to claim 1, characterized in that: The positioning device (5) comprises: A first position sensor (51), the first position sensor (51) being arranged on a side wall of the transport assembly line (1), the first position sensor (51) being arranged corresponding to the yoke mounting device (2) and being used for sensing the base (110); A first positioning module (52), the first positioning module (52) is arranged in the transport assembly line (1) and is arranged corresponding to the first position sensor (51); wherein: When the first position sensor (51) senses the base (110), the first positioning module (52) can drive the base (110) to detach from the transport assembly line (1) and clamp the base (110).

3. The pointer indicator watch assembly system according to claim 2, characterized in that: The transport assembly line (1) comprises two transmission belt mechanisms arranged at intervals; the first positioning module (52) comprises: a first lifting component (521), the first lifting component (521) being disposed between the two transmission belt mechanisms and used for driving the base (110) to be lifted and lowered so that the base (110) is separated from the transmission belt mechanisms; a first gear assembly (522), wherein the first gear assembly (522) is two in number, the two first gear assemblies (522) are located between the two transmission belt mechanisms and are spaced apart along the transport direction of the transmission belt mechanisms, and the first gear assembly (522) is used for clamping the base (110); A first position limiting component (523), the first position limiting component (523) being arranged on a side wall of the transport line (1), and the first position limiting component (523) and the first position sensor (51) being located on two oppositely arranged side walls of the transport line (1); wherein: When the first position sensor (51) detects the base (110), the two first shift assemblies (522) move synchronously to engage the base (110), the first lifting assembly (521) drives the base (110) to rise to disengage from the transmission belt mechanism, and the first limit assembly (523) pushes the base (110) to move toward the side wall of the transport assembly line (1) to engage the base (110).

4. The pointer indicator watch assembly system according to claim 1, characterized in that: The yoke installation module (22) comprises a yoke drive component (221) and a yoke grabbing component (222), wherein the yoke grabbing component (222) is arranged at a power output end of the yoke drive component (221), and the yoke drive component (221) is used to drive the yoke grabbing component (222) to reciprocate between the yoke storage bin (21) and the transport assembly line (1).

5. The pointer indicator watch assembly system according to claim 1, characterized in that: The positioning device (5) comprises: A second position sensor (53), the second position sensor (53) being arranged on a side wall of the transport assembly line (1), the second position sensor (53) being arranged corresponding to the scale mounting device (3) and being used to sense the base (110); A second positioning module (54), the second positioning module (54) is arranged in the transport assembly line (1) and is arranged corresponding to the second position sensor (53); wherein: When the second position sensor (53) senses the base (110), the second positioning module (54) can drive the base (110) to detach from the transport assembly line (1) and clamp the base (110).

6. The pointer indicator watch assembly system according to claim 5, characterized in that: The transport assembly line (1) comprises two transmission belt mechanisms arranged at intervals; the second positioning module (54) comprises: a second lifting component (541), the second lifting component (541) being disposed between the two transmission belt mechanisms and used for driving the base (110) to be lifted and lowered so that the base (110) is separated from the transmission belt mechanisms; A second gear assembly (542), wherein the number of the second gear assemblies (542) is two, the two second gear assemblies (542) are located between the two transmission belt mechanisms, and are spaced apart along the transport direction of the transmission belt mechanisms, and the second gear assemblies (542) are used to clamp the base (110); A second position limiting component (543), the second position limiting component (543) is arranged on a side wall of the transport line (1), and the second position limiting component (543) and the second position sensor (53) are located on two oppositely arranged side walls of the transport line (1); wherein: When the second position sensor (53) detects the base (110), the two second shift assemblies (542) move synchronously to engage the base (110), the second lifting assembly (541) drives the base (110) to rise to disengage from the transmission belt mechanism, and the second limit assembly (543) pushes the base (110) to move toward the side wall of the transport assembly line (1) to engage the base (110).

7. The pointer indicator watch assembly system according to claim 1, characterized in that: The scale installation module (32) comprises a scale driving component (321) and a scale adsorption component (322); the scale adsorption component (322) is arranged at the power output end of the scale driving component (321) and is used to drive the scale adsorption component (322) to reciprocate between the scale storage bin (31) and the transport assembly line (1).

8. The pointer indicator watch assembly system according to claim 7, characterized in that: The scale installation device (3) further comprises a scale temporary storage platform (35), wherein the scale temporary storage platform (35) is used to temporarily store the scale plate (130), and the scale adsorption components (322) are arranged in two intervals. When the scale driving component (321) drives the scale adsorption components (322) to move, one of the scale adsorption components (322) reciprocates between the scale temporary storage platform (35) and the transport assembly line (1), and the other scale adsorption component (322) reciprocates between the scale temporary storage platform (35) and the scale storage bin (31).

9. The pointer indicator watch assembly system according to claim 1, characterized in that: The magnetizing device (4) comprises: a third position sensor (41), the third position sensor (41) being used to detect the position of the base (110); A magnetizing positioning module (42), wherein there are two magnetizing positioning modules (42), and the two magnetizing positioning modules (42) are arranged at intervals, and the magnetizing positioning module (42) comprises a magnetizing driving component (421) and a magnetizing movable component (422), and the magnetizing movable component (422) is connected to the power output end of the magnetizing driving component (421), and the magnetizing driving component (421) drives the magnetizing movable component (422) to move in a direction close to or away from the base (110), and the magnetizing movable component (422) is connected to an external magnetizing device.

10. A method for assembling a pointer indicator watch using the pointer indicator watch assembly system according to any one of claims 1 to 9, characterized in that: include: Placing the base (110) of the pointer indicator on the transport line (1); The positioning device (5) detects that the base (110) is aligned with the yoke mounting device (2), and the yoke mounting device (2) mounts the yoke ring (120) of the pointer indicator onto the base (110); The transport assembly line (1) transports the base to a circuit board installation station (6), and manually installs the circuit board of the pointer indicator onto the base (110); The positioning device (5) detects that the base (110) is aligned with the scale installation device (3), and the scale installation device (3) installs the scale plate (130) of the pointer indicator onto the base (110); The transport assembly line (1) transports the base to the bracket installation station (8), and manually installs the bracket (140) of the pointer indicator on the base (110); The positioning device (5) detects that the base (110) is aligned with the magnetizing device (4), and the magnetizing device (4) magnetizes the magnetic yoke ring (120).

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