Measuring device for assembling magnetic pole iron core

Abstract

The utility model relates to a measuring device for assembling a magnetic pole iron core, and relates to the technical field of motors, the measuring device comprises a machine base, the machine base is provided with a limiting groove matched with the bottom of a magnetic pole punching sheet, the machine base is provided with a first pressing plate and a second pressing plate which are oppositely arranged, the first pressing plate is fixedly installed on the machine base, and the second pressing plate is installed on the machine base in a sliding mode; the punching sheet counting module is used for detecting the number of the punching sheets stacked on the machine base and outputting a pre-pressing control signal when the number of the punching sheets reaches a set value; the press-fitting driving module is used for receiving the pre-pressing control signal and pressing the magnetic pole punching sheet; the measuring module is used for detecting the size of the magnetic pole iron core when the press-fitting pressure of the magnetic pole punching sheet reaches a set pressure value and outputting an iron core size signal; and the display is used for receiving and displaying the iron core size signal. The magnetic pole punching sheet can be automatically pre-pressed, the size of the magnetic pole iron core after press fitting is automatically measured, and the efficiency of detecting the size of the magnetic pole iron core formed by press fitting of the magnetic pole punching sheet by an operator is improved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a measuring device for assembling a magnetic pole core. Background Art

[0002] The yoke and pole are the key components of the hydro-turbine generator. The yoke and pole of a large hydro-turbine generator are often made of stacked steel plate punchings. The weight of the yoke and pole punchings accounts for about 50-65% of the total weight of the hydro-turbine generator rotor, and is the key component of the hydro-turbine generator. As the core component of the hydro-turbine generator, the pole core provides electromagnetic induction for the hydro-turbine generator. When making the pole core of the hydro-turbine generator, it is necessary to use the positioning tool to axially concentrically position the punching sheet and then press the pole core.

[0003] Punching sheet press-fitting is the process of stacking the pole punching sheet and the pole pressure plate and tightening them with a through-screw. In the prior art, the pole punching sheets are mainly stacked by manual pressing. When press-fitting the pole punching sheets, multiple pole punching sheets are manually stacked on the tooling. Positioning holes are opened on the pole punching sheets. During the press-fitting process, the operator can use the positioning rod to assist in positioning to facilitate the stacking of the pole punching sheets, and then press-fit. After the pole core is pressed, it is tightened by locking bolts, etc., and then transferred by the hoisting mechanism for subsequent arc welding processing.

[0004] However, in the actual production and processing process, the pre-compression locking pressure of the pole punch, the thickness of the pole punch, the thickness uniformity and the thickness of the paint film on the surface of the pole punch affect the measurement result of the total length of the pole core, making it difficult to ensure the accuracy of the pole core pressing, and there is room for improvement. Utility Model Content

[0005] In order to improve the accuracy of dimensional detection of a pole core and improve the press-fitting accuracy of the pole core, the present application provides a measuring device for assembling a pole core.

[0006] The present application provides a measuring device for pole core assembly using the following technical solution:

[0007] A measuring device for assembling a magnetic pole core comprises a machine base, the machine base is provided with a limit groove adapted to the bottom of a magnetic pole punching sheet, the machine base is provided with a first pressing plate and a second pressing plate arranged opposite to each other, the first pressing plate is fixedly mounted on the machine base, and the second pressing plate is slidably mounted on the machine base; and:

[0008] A punching sheet counting module is installed on the machine base, and is used to detect the number of punching sheets stacked on the machine base, and output a pre-pressing control signal when the number of punching sheets reaches a set value;

[0009] A press-fit drive module, located beside the machine base, with a drive end fixedly connected to the second pressing plate, for receiving the pre-pressing control signal and pressing the magnetic pole punching sheet;

[0010] A measuring module, fixedly mounted on the second pressing plate, for detecting the size of the pole core when the pole punching sheet press-fitting pressure reaches a set pressure value, and outputting a core size signal;

[0011] A display is fixedly mounted on the machine base, and a signal input terminal is connected to a signal output terminal of the measuring module, and is used for receiving and displaying the core size signal.

[0012] By adopting the above technical scheme, in the process of press-fitting the pole punching sheets, a plurality of pole punching sheets can be stacked on the second pressing plate on the machine base close to the first pressing plate by a loading robot (or manually by an operator). In this process, the punching sheet counting module calculates the number of pole punching sheets stacked on the machine base. When the number of pole punching sheets reaches the said value, the pressing driving module drives the second pressing plate to move in the direction close to the first pressing plate until the stacked pole punching sheets are pressed between the first pressing plate and the second pressing plate, which can avoid the operator from manually pressing the pole core and accurately control the pressing pressure value; when the pressing pressure of the first pressing plate and the second pressing plate on the pole punching sheets reaches the required pressing set pressure, the measuring module automatically detects the length dimension of the pole core and displays it through the display, which can achieve the technical effect of automatically pre-pressing the pole core and automatically measuring the length dimension of the pole core after pre-pressing, and can effectively ensure the accuracy and efficiency of the measurement results. In addition, due to the setting of the upper limit slot of the machine base, the position of the pole punching sheet during the pressing process can be limited to reduce the tilting and tipping of the pole punching sheet.

[0013] Preferably, a mounting bracket is fixedly connected to the machine base, the mounting bracket is located on the side of the second pressing plate away from the first pressing plate, a plurality of positioning rods are slidably connected to the mounting bracket, the positioning rods are matched with the positioning holes on the magnetic pole punching sheet, and the first pressing plate and the second pressing plate are respectively provided with through holes for matching with the plurality of positioning rods;

[0014] Roller clamping mechanisms are fixedly installed on both sides of the mounting bracket, and the two roller clamping mechanisms respectively drive a plurality of positioning rods to slide at a uniform speed toward a direction close to the first pressing plate.

[0015] By adopting the above technical scheme, during the process of pressing the pole punching sheets, the roller clamping and feeding mechanisms on both sides of the mounting bracket clamp and feed multiple positioning rods to slide at a uniform speed. The positioning rods can be convenient for positioning the pole punching sheets during the process of stacking the pole punching sheets, thereby ensuring the straightness of the press-fitted pole core. A group of roller clamping and feeding mechanisms can feed the positioning rods during the process of stacking the pole punching sheets, thereby ensuring that the positioning rods always extend outward from the pole punching sheets.

[0016] Preferably, two upper and lower opposite positioning rods are respectively provided with mounting grooves;

[0017] The counting module includes an infrared radiation sensor and a single chip microcomputer, the infrared radiation sensor includes an infrared transmitting end and an infrared receiving end, and the infrared transmitting end and the infrared receiving end are respectively embedded and installed in the two installation grooves;

[0018] The infrared receiving end senses the magnetic pole plate between the infrared transmitting end and the infrared receiving end and outputs a high level signal;

[0019] The signal output end of the infrared receiving end is signal-connected to the signal input end of the single-chip microcomputer. The single-chip microcomputer receives the high-level signal and outputs the pre-pressure control signal when the number of occurrences of the high-level signal reaches a set value.

[0020] By adopting the above technical scheme, during the process of stacking the magnetic pole punchings, the magnetic pole punchings are aligned with the positioning rod and stacked on the positioning rod, the magnetic pole punchings block the infrared rays emitted by the infrared transmitting end, the receiving end cannot receive the infrared rays and outputs a high-level signal, and the single-chip microcomputer calculates the number of occurrences of the high-level signal, thereby achieving the technical effect of automatically detecting the magnetic pole punchings stacked on the machine base; when the number of magnetic pole punchings stacked on the machine base reaches the set required number, the single-chip microcomputer outputs a pre-pressing control signal, the press-fitting drive module receives the pre-pressing control signal and pulls the second pressing plate to pre-press the magnetic pole core.

[0021] Preferably, the press-fitting drive module comprises two hydraulic cylinders installed on the ground beside the machine base, the two hydraulic cylinders are located on a side of the first pressing plate away from the second pressing plate, and the driving shafts of the two hydraulic cylinders are fixedly connected to the second pressing plate;

[0022] The signal input ends of the two hydraulic cylinders are connected to the signal input end of the single chip microcomputer, and the two hydraulic cylinders receive the pre-pressing control signal and drive the second pressing plate to move toward the direction close to the first pressing plate;

[0023] A thin film pressure sensor is fixedly connected to the side wall of the first pressing plate close to the second pressing plate, and the thin film pressure sensor senses the contact pressure between the magnetic pole punching sheet and the first pressing plate and outputs a sensed pressure signal;

[0024] The signal output terminal of the thin film pressure sensor is connected to a comparator chip, and the comparator chip receives the sensing pressure signal and outputs a pressure-maintaining control signal when the contact pressure reaches a set pressure value;

[0025] The measuring module and the signal input ends of the two hydraulic cylinders are connected to the signal output end of the comparator chip. The two hydraulic cylinders receive the pressure-maintaining control signal and stop driving. The measuring module receives the pressure-maintaining control signal and detects the size of the pole core.

[0026] By adopting the above technical scheme, the hydraulic cylinder retracts the driving shaft after receiving the pre-pressure control signal, which can drive the second pressure plate and the pole punchings stacked on the machine base to move in the direction close to the first pressure plate until the two ends of the pole core are pressed tightly between the first pressure plate and the second pressure plate; during the pressing process, the thin film pressure sensor detects the contact pressure between the side wall of the pole punching and the first pressure plate. When the contact pressure reaches the required pressing pressure, the comparator chip controls the hydraulic cylinder to stop driving, thereby achieving the technical effect of automatically controlling the pressing pressure and automatically maintaining the pressure; at the same time, the measuring module automatically detects the length of the pole core after receiving the pressure maintaining control signal, thereby achieving the technical effect of automatically measuring the pole core.

[0027] Preferably, the measuring module comprises two laser distance measuring sensors, which receive the pressure-maintaining control signal and respectively detect the distance between the two laser distance measuring sensors and the first pressing plate and respectively output the core size signal;

[0028] The display receives and displays the two core size signals.

[0029] By adopting the above technical scheme, two laser ranging sensors emit lasers, and the lasers are reflected after passing through the side wall of the first pressure plate. Since the two ends of the magnetic pole core formed by the stacking of the magnetic pole punching sheets are pressed against the first pressure plate and the second pressure plate, the technical effect of automatically detecting the length of the magnetic pole core can be achieved, and the two laser ranging sensors can reflect the length of both sides of the magnetic pole core. The operator can further judge the uniformity of the two ends of the magnetic pole core through the two length dimensions, so that the operator can adjust the magnetic pole punching sheets.

[0030] In summary, the measuring device for assembling a magnetic pole core of the present application has at least one of the following beneficial technical effects:

[0031] 1. In the process of press-fitting the pole punching sheets, a plurality of pole punching sheets can be stacked on the second pressing plate on the machine base close to the first pressing plate by a loading robot (or manually by an operator). In this process, an infrared counter-radiation sensor and a single-chip microcomputer calculate the number of pole punching sheets stacked on the machine base. When the number of pole punching sheets reaches the said value, the hydraulic cylinder drives the second pressing plate to move in the direction close to the first pressing plate until the stacked pole punching sheets are press-fitted between the first pressing plate and the second pressing plate, thereby eliminating the need for the operator to manually press-fit the pole core and accurately controlling the pressing pressure value. When the pressing pressure of the first pressing plate and the second pressing plate on the pole punching sheets reaches the required pressing set pressure, the comparator chip controls the hydraulic cylinder to stop driving and controls the two laser ranging sensors to automatically detect the length of the pole core and display it on a display, thereby achieving the technical effect of automatically pre-pressing the pole core and automatically measuring the length of the pole core after pre-pressing, and effectively ensuring the accuracy and efficiency of the measurement results.

[0032] 2. Two laser ranging sensors emit lasers, which are reflected after passing through the side wall of the first pressure plate. Since the two ends of the magnetic pole core formed by the stacking of the magnetic pole punching sheets are pressed against the first pressure plate and the second pressure plate, the technical effect of automatically detecting the length of the magnetic pole core can be achieved. The two laser ranging sensors can reflect the length of both sides of the magnetic pole core. The operator can further judge the uniformity of the two ends of the magnetic pole core through the two length dimensions, so that the operator can adjust the magnetic pole punching sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of the base.

[0034] Figure 2 It is a schematic diagram of an embodiment of the present application for illustrating the positional relationship between the first pressing plate and the second pressing plate.

[0035] Figure 3 It is a schematic diagram of an embodiment of the present application for demonstrating the internal signal transmission of a measuring device.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. Machine base; 11. Limiting groove; 12. First pressure plate; 13. Second pressure plate; 14. Through hole; 15. Mounting bracket; 16. Roller clamping mechanism; 17. Positioning rod; 171. Mounting groove; 2. Punching sheet counting module; 21. Infrared transmitting end; 22. Infrared receiving end; 3. Press-fitting drive module; 31. Hydraulic cylinder; 4. Measuring module; 41. Laser ranging sensor; 5. Display. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-3 This application is described in further detail.

[0038] Example

[0039] The present application embodiment discloses a measuring device for assembling a magnetic pole core. Figure 1-Figure 3 It mainly includes a machine base 1, on which a limiting groove 11 adapted to the bottom of the magnetic pole punching sheet is opened, and a first pressing plate 12 and a second pressing plate 13 arranged opposite to each other are arranged on the machine base 1. The first pressing plate 12 is fixedly installed on the machine base 1, and the second pressing plate 13 is slidably installed on the machine base 1.

[0040] And: a punching sheet counting module 2, installed on the machine base 1, for detecting the number of punching sheets stacked on the machine base 1, and outputting a pre-pressing control signal when the number of punching sheets reaches a set value; a press-fitting drive module 3, located on the side of the machine base 1, with a driving end fixedly connected to the second pressing plate 13, for receiving a pre-pressing control signal and pressing the pole punching sheet; a measuring module 4, fixedly installed on the second pressing plate 13, for detecting the size of the pole core when the pressing pressure of the pole punching sheet reaches a set pressure value, and outputting a core size signal; a display 5, fixedly installed on the machine base 1, with a signal input end connected to a signal output end of the measuring module 4, for receiving and displaying a core size signal.

[0041] During the process of press-fitting the pole punchings, a plurality of pole punchings can be stacked on the side of the second pressing plate 13 on the machine base 1 close to the first pressing plate 12 by a loading robot (or manually by an operator). During this process, the punching counting module 2 calculates the number of pole punchings stacked on the machine base 1. When the number of pole punchings reaches a certain value, the press-fitting drive module 3 drives the second pressing plate 13 to move toward the direction close to the first pressing plate 12 until the stacked pole punchings are press-fitted between the first pressing plate 12 and the second pressing plate 13, thereby eliminating the need for the operator to manually press-fit the pole core and accurately controlling the pressing pressure value. When the pressing pressure of the first pressing plate 12 and the second pressing plate 13 on the pole punchings reaches the required pressing set pressure, the measuring module 4 automatically detects the length dimension of the pole core and displays it through the display 5, thereby achieving the technical effect of automatically pre-pressing the pole core and automatically measuring the length dimension of the pole core after pre-pressing, thereby effectively ensuring the accuracy and efficiency of the measurement results.

[0042] In addition, due to the setting of the upper limit groove 11 on the machine base 1, the position of the magnetic pole punching sheet during the press-fitting process can be limited, thereby reducing the occurrence of tilting and tipping of the magnetic pole punching sheet.

[0043] Reference Figure 1 and Figure 2 A mounting bracket 15 is fixedly connected to the machine base 1, and the mounting bracket 15 is located on the side of the second pressing plate 13 away from the first pressing plate 12. A plurality of positioning rods 17 are slidably connected to the mounting bracket 15, and the positioning rods 17 are adapted to the positioning holes on the pole punching sheet. The first pressing plate 12 and the second pressing plate 13 are respectively provided with through holes 14 for adapting to the plurality of positioning rods 17.

[0044] Roller clamping mechanisms 16 are fixedly mounted on both sides of the mounting bracket 15 , respectively. The two roller clamping mechanisms 16 respectively drive a plurality of positioning rods 17 to slide at a uniform speed toward a direction close to the first pressing plate 12 .

[0045] During the process of pressing the pole punching sheets, the roller clamping and feeding mechanisms 16 on both sides of the mounting bracket 15 clamp and feed multiple positioning rods 17 to slide at a uniform speed. The positioning rods 17 can be used to locate the pole punching sheets during the process of stacking the pole punching sheets, thereby ensuring the straightness of the press-fitted pole core. A group of roller clamping and feeding mechanisms 16 can feed the positioning rods 17 during the process of stacking the pole punching sheets, thereby ensuring that the positioning rods 17 always extend outward from the pole punching sheets.

[0046] It should be noted that in the embodiment of the present application, the roller clamping mechanism 16 is driven by a servo motor installed on the mounting bracket 15, and it mainly realizes the transportation of the positioning rod through the friction between the wheel surface of the roller and the positioning rod. This is the prior art and is not limited or elaborated here.

[0047] Reference Figure 2 and Figure 3 , two positioning rods 17 facing each other are respectively provided with mounting grooves 171 ; the counting module includes an infrared radiation sensor and a single-chip microcomputer, the infrared radiation sensor includes an infrared transmitting end 21 and an infrared receiving end 22 , and the infrared transmitting end 21 and the infrared receiving end 22 are respectively embedded and installed in the two mounting grooves 171 .

[0048] The infrared receiving end 22 senses the magnetic pole punching between the infrared transmitting end 21 and the infrared receiving end 22 and outputs a high level signal; the signal output end of the infrared receiving end 22 is connected to the signal input end of the single chip microcomputer, the single chip microcomputer receives the high level signal and outputs a pre-pressure control signal when the number of occurrences of the high level signal reaches a set value.

[0049] During the process of stacking the pole punchings, the pole punchings are aligned with the positioning rod 17 and stacked on the positioning rod 17. The pole punchings block the infrared rays emitted by the infrared transmitting end 21, and the receiving end cannot receive the infrared rays and outputs a high-level signal. The single-chip microcomputer calculates the number of occurrences of the high-level signal, and can achieve the technical effect of automatically detecting the pole punchings stacked on the machine base 1; when the number of pole punchings stacked on the machine base 1 reaches the set required number, the single-chip microcomputer outputs a pre-stressing control signal, the press-fitting drive module 3 receives the pre-stressing control signal and pulls the second pressing plate 13 to pre-stress the pole core.

[0050] Reference Figure 1 and Figure 2 The press-fitting drive module 3 uses two hydraulic cylinders 31 installed on the ground beside the machine base 1. The two hydraulic cylinders 31 are located on the side of the first pressing plate 12 away from the second pressing plate 13, and the driving shafts of the two hydraulic cylinders 31 are fixedly connected to the second pressing plate 13.

[0051] The signal input ends of the two hydraulic cylinders 31 are connected to the signal input ends of the single chip microcomputer. The two hydraulic cylinders 31 receive the pre-pressing control signal and drive the second pressing plate 13 to move toward the direction close to the first pressing plate 12 .

[0052] A thin film pressure sensor is fixedly connected to the side wall of the first pressing plate 12 close to the second pressing plate 13 . The thin film pressure sensor senses the contact pressure between the magnetic pole punching sheet and the first pressing plate 12 and outputs a sensed pressure signal.

[0053] The signal output terminal of the film pressure sensor is connected to a comparator chip, which receives the sensing pressure signal and outputs a pressure-maintaining control signal when the contact pressure reaches a set pressure value.

[0054] The signal input ends of the measuring module 4 and the two hydraulic cylinders 31 are connected to the signal output end of the comparator chip. The two hydraulic cylinders 31 receive the pressure-maintaining control signal and stop driving. The measuring module 4 receives the pressure-maintaining control signal and detects the size of the pole core.

[0055] After receiving the pre-pressure control signal, the hydraulic cylinder 31 retracts the drive shaft, which can drive the second pressure plate 13 and the magnetic pole punchings stacked on the machine base 1 to move toward the first pressure plate 12 until the two ends of the magnetic pole core are pressed tightly between the first pressure plate 12 and the second pressure plate 13; during the press-fitting process, the thin film pressure sensor detects the contact pressure between the side wall of the magnetic pole punching and the first pressure plate 12. When the contact pressure reaches the required press-fitting pressure, the comparator chip controls the hydraulic cylinder 31 to stop driving, thereby achieving the technical effect of automatically controlling the press-fitting pressure and automatically maintaining the pressure; at the same time, the measuring module 4 automatically detects the length of the magnetic pole core after receiving the pressure-maintaining control signal, thereby achieving the technical effect of automatically measuring the magnetic pole core.

[0056] Reference Figure 1 and Figure 3 The measuring module 4 uses two laser distance measuring sensors 41, which receive the pressure maintaining control signal and respectively detect the distance between the first pressing plate 12 and respectively output the core size signal; the display 5 receives the two core size signals and displays them.

[0057] The two laser ranging sensors 41 emit lasers, which are reflected after passing through the side wall of the first pressure plate 12. Since the two ends of the pole core formed by the stacking of the pole punching sheets are pressed against the first pressure plate 12 and the second pressure plate 13, the technical effect of automatically detecting the length of the pole core can be achieved. The two laser ranging sensors 41 can reflect the length of both sides of the pole core. The operator can further judge the uniformity of the two ends of the pole core through the two length dimensions, so that the operator can adjust the pole punching sheets.

[0058] The implementation principle of the measuring device for assembling a magnetic pole core in the embodiment of the present application is as follows: in the process of press-fitting the magnetic pole punching sheets, a plurality of magnetic pole punching sheets can be stacked on the second pressing plate 13 on the machine base 1 close to the first pressing plate 12 by a loading robot (or manually by an operator). In this process, an infrared counter-radiation sensor and a single-chip microcomputer calculate the number of magnetic pole punching sheets stacked on the machine base 1. When the number of magnetic pole punching sheets reaches the said value, the hydraulic cylinder 31 drives the second pressing plate 13 to move in a direction close to the first pressing plate 12 until the stacked magnetic pole punching sheets are press-fitted on the second pressing plate 13. Between the first pressing plate 12 and the second pressing plate 13, the operator can be saved from manually pressing the pole core, and the pressing pressure value can be accurately controlled; when the pressing pressure of the first pressing plate 12 and the second pressing plate 13 on the pole punching sheet reaches the required pressing set pressure, the comparator chip controls the hydraulic cylinder 31 to stop driving, and controls the two laser ranging sensors 41 to automatically detect the length of the pole core and display it through the display 5, which can achieve the technical effect of automatically pre-pressing the pole core and automatically measuring the length of the pole core after pre-pressing, and can effectively ensure the accuracy and efficiency of the measurement results.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A measuring device for pole core assembly, characterized in that: The machine base (1) comprises a limiting groove (11) adapted to the bottom of a magnetic pole sheet, the machine base (1) is provided with a first pressing plate (12) and a second pressing plate (13) arranged opposite to each other, the first pressing plate (12) is fixedly mounted on the machine base (1), and the second pressing plate (13) is slidably mounted on the machine base (1); as well as: A punch counting module (2) is installed on the machine base (1) and is used to detect the number of punches stacked on the machine base (1) and output a pre-pressing control signal when the number of punches reaches a set value; A press-fit drive module (3), located beside the machine base (1), with a drive end fixedly connected to the second pressing plate (13), for receiving the pre-pressing control signal and pressing the magnetic pole punching sheet; A measuring module (4) is fixedly mounted on the second pressing plate (13) and is used to detect the size of the pole core when the pressing pressure of the pole punching sheet reaches a set pressure value and output a core size signal; A display (5) is fixedly mounted on the machine base (1), and has a signal input end connected to a signal output end of the measuring module (4) for receiving and displaying the core size signal.

2. A measuring device for pole core assembly according to claim 1, characterized in that: The base (1) is fixedly connected with a mounting bracket (15), the mounting bracket (15) is located on a side of the second pressing plate (13) away from the first pressing plate (12), the mounting bracket (15) is slidably connected with a plurality of positioning rods (17), the positioning rods (17) are matched with positioning holes on the magnetic pole punching sheet, and the first pressing plate (12) and the second pressing plate (13) are respectively provided with through holes (14) for matching with the plurality of positioning rods (17); Roller clamping mechanisms (16) are fixedly mounted on both sides of the mounting bracket (15), and the two roller clamping mechanisms (16) respectively drive a plurality of positioning rods (17) to slide at a uniform speed in a direction close to the first pressing plate (12).

3. A measuring device for pole core assembly according to claim 2, characterized in that: Two upper and lower opposite positioning rods (17) are respectively provided with mounting grooves (171); The counting module comprises an infrared radiation sensor and a single chip microcomputer, the infrared radiation sensor comprises an infrared transmitting end (21) and an infrared receiving end (22), the infrared transmitting end (21) and the infrared receiving end (22) are respectively embedded in the two mounting grooves (171); The infrared receiving end (22) senses the magnetic pole plate passing through the infrared transmitting end (21) and the infrared receiving end (22) and outputs a high level signal; The signal output end of the infrared receiving end (22) is signal-connected to the signal input end of the single-chip microcomputer; the single-chip microcomputer receives the high-level signal and outputs the pre-pressure control signal when the number of occurrences of the high-level signal reaches a set value.

4. A measuring device for pole core assembly according to claim 3, characterized in that: The press-fitting drive module (3) comprises two hydraulic cylinders (31) installed on the ground beside the machine base (1), the two hydraulic cylinders (31) are located on a side of the first pressing plate (12) away from the second pressing plate (13), and the driving shafts of the two hydraulic cylinders (31) are fixedly connected to the second pressing plate (13); The signal input ends of the two hydraulic cylinders (31) are signal-connected to the signal input end of the single-chip computer, and the two hydraulic cylinders (31) receive the pre-pressing control signal and drive the second pressing plate (13) to move in a direction close to the first pressing plate (12); A thin film pressure sensor is fixedly connected to the side wall of the first pressing plate (12) close to the second pressing plate (13), and the thin film pressure sensor senses the contact pressure between the magnetic pole punching sheet and the first pressing plate (12) and outputs a sensed pressure signal; The signal output terminal of the thin film pressure sensor is connected to a comparator chip, and the comparator chip receives the sensing pressure signal and outputs a pressure-maintaining control signal when the contact pressure reaches a set pressure value; The signal input ends of the measuring module (4) and the two hydraulic cylinders (31) are signal-connected to the signal output end of the comparator chip; the two hydraulic cylinders (31) receive the pressure-maintaining control signal and stop driving; and the measuring module (4) receives the pressure-maintaining control signal and detects the size of the pole core.

5. A measuring device for pole core assembly according to claim 4, characterized in that: The measuring module (4) comprises two laser distance measuring sensors (41), the two laser distance measuring sensors (41) receiving the pressure maintaining control signal and respectively detecting the distance between the two sensors and the first pressing plate (12) and respectively outputting the iron core size signal; The display (5) receives and displays the two core size signals.

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