Electromechanical joint module

Abstract

The invention relates to an electromechanical engagement module (1) for applying a force (K), comprising a drive unit (10) and a tappet (30) which is mounted on the drive unit (10) and which can be moved linearly by means of the drive unit (10); a force sensor (40) mounted on the tappet, measuring the applied force (K) and generating a measurement value (MW) for the measured force; a stator (20), which is stationary, with respect to which the tappet and the force sensor are linearly movable over a stroke length (L); the tappet is provided with a tappet electronic device (31) and a tappet coil (32). The stator is provided with a stator electronic device (21) and a stator coil (22); the tappet coil is held in the vicinity of the stator coil during linear movement; the tappet electronics and the stator electronics are adapted to transmit measurements as measurement data (MD) from the tappet coil to the stator coil by near field telemetry; the stator coil extends over the entire stroke length.

Description

Technical Field

[0001] The present invention relates to an electromechanical joining module. Background Art

[0002] Electromechanical joining modules are used in industrial manufacturing for various assembly and joining processes, such as stamping, punching, riveting, spot welding, etc. An electromechanical joining module has an electric motor, a screw drive, a tappet and a force sensor. The electric motor is effectively connected to the screw drive, and the rotational movement of the electric drive is converted by the screw drive into a linear movement. The tappet and the force sensor are mounted on the screw drive and move with the linear movement. They move linearly over a stroke length of several hundred mm. For efficient production, the electromechanical joining module has a high movement speed of about 400 mm / s, a high stroke rate of more than 10 strokes per minute, and a high repeat accuracy of 0.01 mm. The force sensor measures the force exerted by the tappet over several orders of magnitude. It generates measurement data for the measured force. The measurement accuracy of the measurement data is 0.5%.

[0003] Such an electromechanical joining module is known from document WO2011009223A1. The electric motor and the screw drive form a drive unit. The drive unit has a stator. The stator is fixed. The tappet is linearly movable relative to the stator. The tappet has a tappet end facing away from the drive unit. The force sensor is mounted on the tappet end.

[0004] According to the teaching of document WO2011009223A1, the tappet has tappet electronics and a tappet coil for this purpose. The tappet coil extends over the entire stroke length. The tappet coil has a single winding and is located in a groove in the tappet. The stator has stator electronics and a stator coil. The stator coil is U-shaped and remains near the tappet coil during the linear movement. The tappet electronics and the stator electronics are adapted to transmit measurement data from the tappet coil to the stator coil by near-field telemetry. In this case, inductive coupling occurs between the tappet coil and the stator coil. Summary of the Invention

[0005] The object of the present invention is to improve the usability of the measurement data transmission known from document WO2011009223A1, simplify its structure and implement it at low cost.

[0006] The object of the present invention is achieved by an electromechanical joining module according to the present invention.

[0007] The present invention relates to an electromechanical engagement module for applying a force, having: a drive unit and a tappet, the tappet being mounted on the drive unit and being linearly movable by the drive unit; a force sensor, which is mounted on the tappet, measures the applied force, and generates a measurement value for the measured force; a stator, which is fixed, and the tappet and the force sensor are linearly movable relative to the stator over a stroke length; the tappet has tappet electronics and a tappet coil; the stator has stator electronics and a stator coil; the tappet coil remains near the stator coil during linear movement; the tappet electronics and the stator electronics are adapted to transmit the measurement value as measurement data from the tappet coil to the stator coil by near-field telemetry; wherein the stator coil extends over the entire stroke length.

[0008] Different from the electromechanical engagement module of document WO2011009223A1, in the electromechanical engagement module according to the present invention, the stator coil extends over the entire stroke length.

[0009] This has several advantages:

[0010] a. Since there is no longer a need for more space in the tappet to arrange the tappet coil that extends over the entire stroke length, the tappet thus obtains mechanical stability. The grooves are eliminated. The acquisition of mechanical stability reduces the bending of the tappet when applying a force. This in turn reduces the possibility of contact between the stator coil and the tappet coil arranged close to each other due to the bending of the tappet, and such contact will cause an interruption in the transmission of measurement data and damage the usability of the electromagnetic engagement module.

[0011] b. By eliminating the grooves in the tappet, the shielding of inductive coupling in near-field telemetry is avoided, which further improves the transmission of measurement data, thereby improving the usability of the electromagnetic engagement module.

[0012] c. In addition, the tappet is guided in a sliding bearing in the stator. According to the teaching of document WO2011009223A1, for this purpose, the guiding surface must be manufactured with high precision in the area of the tappet coil, which is both complex and expensive.

[0013] d. Finally, relatively more space is provided on the stator that radially surrounds the tappet for arranging the stator coil that extends over the entire stroke length. This enables the stator coil to be arranged on the stator simply and at low cost.

[0014] A preferred expansion scheme of the electromechanical engagement module according to the present invention will be given below. Description of the Drawings

[0015] The present invention will be described in detail below with reference to the drawings by way of example. Among them:

[0016] Figure 1 A view showing a part of the electromechanical engagement module 1; and

[0017] Figure 2 shows a schematic view of a tappet 30 of an electromechanical engagement module 1 and a part of a stator 20 according to Figure 1 , wherein the tappet has a tappet coil 32 and the stator has a stator coil 22 and a transformer coil 25.

[0018] Like reference numerals in the drawings denote like objects.

[0019] The list of reference numerals is as follows:

[0020] 1: Electromechanical engagement module

[0021] 10: Drive unit

[0022] 14: Drive unit end

[0023] 20: Stator

[0024] 21: Stator electronics

[0025] 22: Stator coil

[0026] 221: Stator coil winding

[0027] 23: First stator line

[0028] 24: Stator end

[0029] 25: Transformer coil

[0030] 250: Central through-hole of the transformer coil

[0031] 251: First transformer coil winding

[0032] 252: Second transformer coil winding

[0033] 26: Second stator line

[0034] 30: Tappet

[0035] 31: Tappet electronics

[0036] 32: Tappet coil

[0037] 33: Tappet line

[0038] 34: Tappet end

[0039] 320: Central through-hole of the tappet coil

[0040] 321: Tappet coil winding

[0041] 40: Force sensor

[0042] 43: Force sensor line

[0043] 50: Evaluation unit

[0044] 53: Evaluation unit circuit

[0045] A: Longitudinal axis

[0046] F1: First carrier frequency

[0047] F2: Second carrier frequency

[0048] K: Force

[0049] L: Stroke length

[0050] MD: Measurement data

[0051] MW: Measured value

[0052] SD: Control data

[0053] U1: Primary voltage

[0054] U2: Secondary voltage

[0055] U3: Alternating voltage

[0056] ZD: Additional data Detailed implementation mode

[0057] Figure 1 A view showing a part of the electromechanical engagement module 1 is presented. The electromechanical engagement module 1 has a drive unit 10, a stator 20, a tappet 30, and a force sensor 40. Details can be seen in the enlarged views on the left, middle, and right sides of Figure 1 . The electromechanical engagement module 1 also has an evaluation unit 50, which can be seen in the schematic diagram according to Figure 2 .

[0058] The drive unit 10 has the function of applying a force K through the tappet 30. The force K can be applied to a mating body (not shown). The drive unit 10 can include an electric motor, a screw drive, a brake, and a control unit. The electric motor and the screw drive are in effective connection, and the rotational motion of the electric drive is converted into a linear motion through the screw drive. The linear motion occurs along the longitudinal axis A of the electromechanical engagement module 1. The application of the force K is achieved through the linear motion. Through the linear motion, a very small force K of several mN can be applied, but also a very large force of several hundred kN can be applied. The linear motion is controlled by the control unit. The brake can brake the linear motion. A moving speed of approximately 400 mm / s is achieved with a repeatability accuracy of 0.01 mm. The drive unit 10 has a drive unit end 14 on the longitudinal axis A.

[0059] The stator 20 has a housing function and at least partially radially surrounds the tappet 30, protecting it from harmful environmental influences, such as contaminants (dust, moisture, etc.). The stator 20 is fixed. The term "fixed" means that the stator 20 maintains its position during the movement of the tappet 30. Thus, the tappet 30 moves linearly relative to the stator 20. The stator 20 has a stator end 24 facing away from the drive unit 10.

[0060] The tappet 30 is mounted on the drive unit end 14 and moves by means of this linear movement. The tappet 30 can move linearly over a stroke length L of several hundred mm. The stroke length L extends along the longitudinal axis A of the electromechanical engagement module 1. In Figure 1 the illustrated embodiment, the stroke length L extends from the drive unit end 14 up to the stator end 24.

[0061] The tappet 30 has a tappet end 34 facing away from the drive unit 10. Details of the tappet end 34 can be seen from the left enlarged view of Figure 1 . The tappet 30 exerts a force K via the tappet end 34. A force sensor 40 is mounted on the tappet end 34.

[0062] The force sensor 40 has the function of measuring the force K exerted by the tappet 30. The force sensor 40 can be a strain gauge or a piezoelectric sensor. The force sensor 40 is not limited to the measurement of the force K. The force sensor can also measure the torque exerted by the tappet 30, such as bending moment, torque, etc. The force sensor can measure the force K over several orders of magnitude. The force sensor 40 can have a tool receptacle for fastening a tool (not shown). The force sensor 40 moves together with the tappet 30.

[0063] The tappet 30 has tappet electronics 31. The tappet electronics 31 can be arranged on the tappet end 34. The force sensor 40 is electrically connected to the tappet electronics 31 via at least one force sensor line 43. The force sensor line 43 is made of a conductive material such as copper, for example. Figure 1 The illustrated embodiment has multiple linear force sensor lines 43. The force sensor 40 generates a measured value MW for the measured force K. The measured value MW is an analog signal, such as the voltage in a strain gauge or the charge in a piezoelectric sensor. The force sensor 40 transmits the measured value MW to the tappet electronics 31 via the force sensor line 43. The tappet electronics 31 is adapted to convert the measured value MW into measurement data MD. When converting the measured value MW into measurement data MD, the tappet electronics 31 electrically amplifies the measured value MW and digitizes it. Here, the tappet electronics 31 amplifies the measured value MW within the measurement range. For electrical amplification, the tappet electronics 31 sets one of multiple possible measurement ranges or changes the set measurement range. The measurement data MD is digital data. The measurement accuracy of the measurement data MD is less than or equal to 0.5%.

[0064] The measurement data MD is evaluated in the evaluation unit 50. The evaluation unit 50 can be arranged remotely from the electromechanical engagement module 1. In the schematic diagram according to Figure 2 , the evaluation unit 50 is electrically connected to the stator electronics 21 via the evaluation unit line 53. For evaluation, the measurement data MD is first transmitted from the tappet electronics 31 to the stator electronics 21, and then from the stator electronics 21 to the evaluation unit 50. The transmission of the measurement data MD from the tappet 30 to the stator 20 is achieved by near-field telemetry. Near-field telemetry is a method known from the ISO / IEC 14443 or ISO / IEC 15693 standard series for the contactless transmission of digital data using coils by electromagnetic induction.

[0065] The inductive coupling of the coil of the tappet 30 and the inductance of the stator 20 is described in detail below.

[0066] The stator 20 has stator electronics 21, a stator coil 22, and at least one stator line 23, 26. The stator lines 23, 26 are made of a conductive material such as copper, for example. Preferably, the stator lines 23, 26 include a first stator line 23 and a second stator line 26. In the Figure 1 and Figure 2 illustrated embodiment, it includes a plurality of linear first stator lines 23 and a plurality of linear second stator lines 26.

[0067] Near-field telemetry is achieved using at least one carrier frequency F1, F2. Preferably, the carrier frequencies F1, F2 include a first carrier frequency F1 of 13.56 MHz and a second carrier frequency F2 in the range of 119 to 135 kHz. The tappet electronics 31 is adapted to generate the first carrier frequency F1. The stator electronics 21 is adapted to generate the second carrier frequency F2.

[0068] Preferably, the stator 20 has a transformer coil 25. The details of the transformer coil 25 can be seen from the enlarged right view of Figure 1 . Preferably, the stator electronics 21 is electrically connected to the transformer coil 25 via the first stator line 23.

[0069] The stator electronics 21 is adapted to generate an alternating voltage having the second carrier frequency F2. This alternating voltage is applied to the transformer coil 25 via the first stator line 23. Hereinafter, the alternating voltage is also referred to as the primary voltage U1 of the stator electronics 21. The primary voltage U1 can be in the range of 10 to 20 V.

[0070] Preferably, the transformer coil is a toroidal core coil having a toroidal core made of a magnetic material such as iron, ferrite, etc. The toroidal core of the transformer coil 25 has a central through-hole 250. The central through-hole 250 of the transformer coil 25 extends perpendicular to the longitudinal axis A of the electromechanical engagement module 1. The transformer coil 25 has transformer coil windings 251, 252. The transformer coil windings 251, 252 are made of a conductive material such as copper. Preferably, the transformer coil windings 251, 252 include a first transformer coil winding 251 and a second transformer coil winding 252. The number of the first transformer coil windings 251 can be in the range of five to ten. The number of the second transformer coil windings 252 can be in the range of one to five. Preferably, the number of the second transformer coils 252 is equal to one. The first transformer coil winding 251 is electrically connected to the first stator line 23. The second transformer coil winding 252 is electrically connected to the second stator line 26.

[0071] The transformer coil 25 has the function of a transformer. The transformer coil 25 is adapted to transform a primary voltage U1 into a secondary voltage U2 in accordance with the ratio of the number of the first transformer coil windings 251 to the number of the second transformer coil windings 252. The secondary voltage U2 can be in the range of 1 to 2V. The secondary voltage U2 has a second carrier frequency F2 of the primary voltage U1.

[0072] The stator coil 22 and the transformer coil 25 are arranged close to each other. This close arrangement of the stator coil 22 and the transformer coil 25 ranges from a few millimeters to a few centimeters.

[0073] The stator coil 22 is made of a conductive material such as aluminum, brass, steel, etc. The stator coil 22 is electrically insulated and fastened to the stator 20. Preferably, the stator coil 22 has a single stator coil winding 221. Preferably, the stator coil 22 has the shape of a horseshoe with two long sides and one short side. The two long sides extend parallel to the longitudinal axis A of the electromechanical engagement module 1.

[0074] The transformer coil 25 and the stator coil 22 are electrically connected via the second stator line 26. The secondary voltage U2 is thus applied to the stator coil 22.

[0075] The secondary voltage U2 generates an alternating current in the stator coil 22. This alternating current forms a magnetic field. The field lines of this magnetic field extend circularly around the stator coil winding 221.

[0076] The tappet 30 has a tappet coil 32. The tappet coil 32 is kept near the stator coil 22 during linear movement. The distance of the close arrangement between the tappet coil 32 and the stator coil 22 ranges from a few millimeters to a few centimeters.

[0077] Details of the tappet coil 32 can be provided by Figure 1seen in the intermediate enlarged view. Preferably, the tappet coil 32 is also a toroidal core coil having a toroidal core made of a magnetic material such as iron, ferrite, etc. The central through-hole 320 of the tappet coil 32 extends parallel to the longitudinal axis A of the electromechanical engagement module 1. The tappet coil 32 has a plurality of tappet coil windings 321. The tappet coil windings 321 are made of a conductive material such as copper. The number of the tappet coil windings 321 can be in the range of 5 to 10. Preferably, the number of the first transformer coil windings 251 is equal to the number of the tappet coil windings 321.

[0078] The stator coil 22 and the tappet coil 32 have the function of being inductively coupled to each other. For this purpose, the stator coil 22 and the tappet coil 32 are arranged relative to each other such that the tappet coil 32 locally completely surrounds the winding 221 of the stator coil 22 in a plane perpendicular to the longitudinal axis A. In accordance with Figure 1 and Figure 2 the embodiment of, the stator coil winding 221 extends through the central through-hole 320 of the tappet coil 32.

[0079] In a toroidal core coil, the field lines of the magnetic field extend circularly inside the toroidal core coil. Therefore, the field lines of the magnetic field of the stator coil 22 exactly extend to the position where the field lines of the magnetic field of the tappet coil 32 are located, thereby achieving optimal inductive coupling.

[0080] Therefore, the stator coil 22 and the tappet coil 32 are suitable for inducing an alternating voltage U3 in the tappet coil 32 by using the secondary voltage U2 of the stator coil 22, and this alternating voltage has a second carrier frequency F2 of the secondary voltage U2.

[0081] The stator coil 22 and the tappet coil 32 also have the function of a transformer. The stator coil 22 and the tappet coil 32 are suitable for transforming the secondary voltage U2 of the stator coil 22 into an alternating voltage U3 in the tappet coil 32. According to the ratio of the number of the stator coil windings 221 to the number of the tappet coil windings 321, the secondary voltage U2 of the stator coil 22 is converted into the alternating voltage U3 of the tappet coil 32. When the number of the first transformer coil windings 251 is the same as the number of the tappet coil windings 321, the alternating voltage U3 of the tappet coil 32 is substantially equal to the primary voltage U1 of the transformer coil 25.

[0082] The tappet coil 32 is electrically connected to the tappet electronics 31 via at least one tappet line 33. The tappet line 33 is made of a conductive material such as copper. The tappet line 33 is electrically connected to the tappet winding 321 of the tappet coil 32. The tappet electronics 31 is adapted to generate a first carrier frequency F1. Measurement data MD is introduced into the alternating voltage U3 of the tappet coil 32 by modulation of the first carrier frequency F1. Different modulation methods can be used, such as phase modulation, frequency modulation, etc. Phase modulation is preferably used. The tappet electronics 31 is adapted to introduce the measurement data MD into the primary voltage U1 by phase modulation of the first carrier frequency F1 of the alternating voltage U3 of the tappet coil 32. Then, by transformation of the alternating voltage U3, the first carrier frequency F1 is introduced into the secondary voltage U2, and by transformation of the secondary voltage U2, the first carrier frequency F1 is introduced from the secondary voltage U2 into the primary voltage U1. The stator electronics 21 is adapted to demodulate the phase-modulated first carrier frequency F1 of the primary voltage U1, thereby extracting the measurement data MD of the primary voltage U1. For evaluation, the measurement data MD is transmitted from the stator electronics 21 to the evaluation unit 50.

[0083] The inductive coupling between the stator coil 22 and the tappet coil 32 is also used to transmit additional data ZD from the tappet electronics 31 to the stator electronics 21. The additional data ZD is at least one of the following information about the tappet electronics 31 and the force sensor 40: a description of the sensitivity of the force sensor 40, or a description of the measurement range of the tappet electronics 31 within which the tappet electronics 31 amplifies the measured value MW during conversion. The tappet electronics 31 is adapted to introduce the additional data ZD into the primary voltage U1 by phase modulation of the first carrier frequency F1 of the alternating voltage U3 of the tappet coil 32. The stator electronics 21 is adapted to demodulate the phase-modulated first carrier frequency F1 of the primary voltage U1, thereby extracting the additional data ZD of the primary voltage U1. For evaluation, the additional data ZD is transmitted from the stator electronics 21 to the evaluation unit 50.

[0084] The inductive coupling between the stator coil 22 and the tappet coil 32 is also used to transmit electrical energy from the stator electronics 21 to the tappet electronics 31. For this purpose, the tappet electronics 31 is adapted to extract the alternating voltage U3 of the tappet coil 32 and use it to supply energy to the tappet electronics 31 or the force sensor 40.

[0085] The inductive coupling between the stator coil 22 and the tappet coil 32 is also used to transfer control data SD from the stator electronics 21 to the tappet electronics 31. The control data SD is digital data. With the control data SD, the operation of the tappet electronics 31 can be controlled. Thus, the tappet electronics 31 can be switched on and off via the control data SD. The tappet electronics 31 can also set or change the measuring range via the control data SD, within which the tappet electronics 31 amplifies the measured value MW during conversion. For this purpose, the stator electronics 21 is adapted to introduce the control data SD into the alternating voltage U3 of the tappet coil 32 by phase modulation of the second carrier frequency F2 of the primary voltage U1. The tappet electronics 31 is adapted to demodulate the phase-modulated second carrier frequency F2 of the alternating voltage U3 of the tappet coil 32, thereby extracting the control data SD of the alternating voltage U3 of the tappet coil 32 and using it for the operation of the tappet electronics 31.

Claims

1. An electromechanical joining module (1) for applying a force (K), the electromechanical joining module comprising: a drive unit (10) and a tappet (30), the tappet (30) being mounted on the drive unit (10) and being linearly movable by the drive unit (10); a force sensor (40), the force sensor being mounted on the tappet (30), measuring the applied force (K) and generating a measurement value (MW) for the measured force; a stator (20), the stator being fixed, the tappet (30) and the force sensor (40) being linearly movable relative to the stator (20) over a stroke length (L); wherein, The tappet (30) has a tappet electronics device (31) and a tappet coil (32); wherein the stator (20) has a stator electronics device (21) and a stator coil (22); wherein the tappet coil (32) remains in the vicinity of the stator coil (22) during the linear movement; wherein the tappet electronics device (31) and the stator electronics device (21) are suitable for transmitting the measured value (MW) as measurement data (MD) from the tappet coil (32) to the stator coil (22) via near-field telemetry; characterized in that the stator coil (22) extends over the entire stroke length (L).

2. The electromechanical joining module (100) according to claim 1, characterized in that: The stator coil (22) has a single stator coil winding (221).

3. The electromechanical joining module (100) according to claim 2, characterized in that: The tappet coil (32) partially and completely surrounds the stator coil winding (221) in a plane perpendicular to the stroke length (L).

4. The electromechanical joining module (100) according to any one of claims 2 to 3, characterized in that: The tappet coil (32) is an annular magnetic core coil having a central through hole (320); and the stator coil winding (221) extends out through the central through hole (320) of the tappet coil (32).

5. The electromechanical joining module (100) according to any one of claims 2 to 4, characterized in that: The stator (20) has a transformer coil (25); the stator electronics (21) is suitable for generating a primary voltage (U1); the primary voltage (U1) is applied to the transformer coil (25); and the transformer coil (25) is suitable for converting the primary voltage (U1) into a secondary voltage (U2).

6. The electromechanical joining module (100) according to claim 5, characterized in that: The transformer coil (25) is a toroidal magnetic core coil; the transformer coil (25) has a first transformer coil winding (251) and a second transformer coil winding (252); and the primary voltage (U1) is converted into the secondary voltage (U2) according to the ratio of the number of the first transformer coil winding (251) to the number of the second transformer coil winding (252).

7. The electromechanical joining module (100) according to any one of claims 2 to 6, characterized in that: The stator electronic device (21) is suitable for generating a primary voltage (U1); applying a secondary voltage (U2) to the stator coil (22); and the stator coil (22) and the tappet coil (32) are suitable for inducing an AC voltage (U3) in the tappet coil (32) using the secondary voltage (U2) of the stator coil (22).

8. The electromechanical joining module (100) according to claim 7, characterized in that: The stator coil (22) and the tappet coil (32) are suitable for converting the secondary voltage (U2) into an AC voltage (U3).

9. The electromechanical joining module (100) according to claim 8, characterized in that: The tappet coil (32) has a plurality of tappet coil windings (321); and according to the ratio between the number of the stator coil windings (221) and the number of the tappet coil windings (321), the secondary voltage (U2) of the stator coil (22) is converted into an AC voltage (U3) of the tappet coil (32).

10. The electromechanical joining module (100) according to any one of claims 7 to 9, characterized in that: The AC voltage (U3) of the tappet coil (32) has a first carrier frequency (F1); the force sensor (40) is electrically connected to the tappet electronics (31) via a force sensor line (43), and transmits the measured value (MW) to the tappet electronics (31) via the force sensor line (43); the tappet electronics (31) is adapted to convert the measured value (MW) into measurement data (MD), and the measurement data (D) is introduced into the primary voltage (U1) by modulating the first carrier frequency (F1) of the AC voltage (U3) of the tappet coil (32); and the stator electronics (21) is adapted to demodulate the modulated first carrier frequency (F1) of the primary voltage (U1) to extract the measurement data (MD) of the primary voltage (U1).

11. The electromechanical joining module (100) according to claim 10, characterized in that: The tappet electronics (31) is adapted to introduce additional data (ZD) into the primary voltage (U1) by modulating the first carrier frequency (F1) of the AC voltage (U3) of the tappet coil (32); and the stator electronics (21) is adapted to demodulate the modulated first carrier frequency (F1) of the primary voltage (U1) so as to extract the additional data (ZD) of the primary voltage (U1).

12. The electromechanical joining module (100) according to claim 11, characterized in that The additional data (ZD) are at least one of the following information about the stator electronics (31) and the force sensor (40): a specification of the sensitivity of the force sensor (40) or a specification of a measuring range of the stator electronics (31), within which the stator electronics (31) amplifies the measured value (MW) during the conversion.

13. The electromechanical joining module (100) according to any one of claims 1 to 12, characterized in that: The stator electronics (21) is suitable for inducing an AC voltage (U3) in the tappet coil (32) via the stator coil (22); and the tappet electronics (31) is suitable for extracting the AC voltage (U3) of the tappet coil (32) and using it to supply energy to the tappet electronics (31) or the force sensor (40).

14. The electromechanical joining module (100) according to claim 13, characterized in that: The primary voltage (U1) and the AC voltage (U3) of the tappet coil (32) have a second carrier frequency (F2); the stator electronic device (21) is suitable for introducing control data (SD) into the AC voltage (U3) of the tappet coil (32) by modulating the second carrier frequency (F2) of the primary voltage (U1); and the tappet electronic device (31) is suitable for demodulating the modulated second carrier frequency (F2) of the AC voltage (U3) of the tappet coil (32), thereby obtaining the control data (SD) of the AC voltage (U3) of the tappet coil (32) and using it for the operation of the tappet electronic device (31).

15. The electromechanical joining module (100) according to claim 14, characterized in that The tappet electronics (31) are switched on and off by means of the control data (SD), or the tappet electronics (31) set or change a measuring range by means of the control data (SD), within which the tappet electronics (31) amplifies the measured value (MW) during the switchover.

Images