Power supply control system for screw assembling device and screw assembling device

Abstract

The utility model relates to a power supply control system for a screw assembling device. The power supply control system comprises a three-phase alternating current power supply; the AC / DC converter is connected to the three-phase AC power supply and is used for converting the three-phase AC voltage into DC output voltage; the monitoring device is powered by the DC output voltage of the AC / DC converter and is used for monitoring the running state of the three-phase AC power supply; and the buffer power supply is charged by the direct-current output voltage of the AC / DC converter and is used for providing buffer direct-current voltage when the three-phase alternating-current power supply is powered off. According to the power supply control system for the screw assembling device, the troubleshooting efficiency can be improved, the protection degree of the power supply control system under the condition that the three-phase alternating current power supply is unstable is improved, the circuit structure of the power supply control system is simplified, and therefore the manufacturing cost of the power supply control system is reduced.

Description

Technical Field

[0001] The present application relates to a power supply control system for a screw assembly device and a screw assembly device. Background Art

[0002] FLS connection technology is an automated screw assembly connection technology, which can also be called FDS (Flow drill screw) connection technology. Such automated screw assembly connection technology can be implemented with the help of an automated screw assembly device, such as a robot-assisted flow drill screw tightening device (Robot Assisted Screwing device for Flow Drill Screw). Through the central tightening shaft of the robot-assisted flow drill screw tightening device, the high-speed rotational motion of the servo motor is transmitted to the screw, which acts on the plate to be connected and deforms the material of the plate to be connected under the huge axial pressure, forms a columnar through-hole flow under the extrusion of the flow drill screw, and is pierced by the screw tip and screwed into the plate to be connected, so that drilling, tapping, and tightening are completed at one time on the flow drill screw tightening device, and finally a fully meshed threaded connection is formed between the plate and the screw. The power supply of such an automated screw assembly device can be controlled by means of a power supply control system for the screw assembly device.

[0003] The inventor of the utility model has studied the power supply control systems for screw assembly devices known in the current market, and found hitherto unknown technical defects in the known power supply control systems for screw assembly devices. These technical defects include:

[0004] 1) The existing power supply control system for screw assembly devices lacks monitoring of the operating status of the external power supply. Once a power supply failure occurs in the external power supply, such as a phase loss in the three-phase AC power supply, the staff may not be able to find the fault point in time.

[0005] 2) When the external power supply is cut off, a power surge may occur, which may cause the existing power supply control system for the screw assembly device to not work properly or may even cause the power supply control system to malfunction, thereby affecting the progress of the screw assembly work.

[0006] 3) The ambient temperature at the screw assembly site may reach 40°C or even above 45°C in some cases. Such a high temperature environment may cause some electrical components in the existing power supply control system for the screw assembly device, such as the servo amplifier, to fail to work stably. Utility Model Content

[0007] Therefore, the purpose of the present application is to provide a power supply control system for a screw assembly device, which can overcome at least one defect in the prior art. In addition, the present application also provides a corresponding screw assembly device.

[0008] A first aspect of the present application provides a power supply control system for a screw assembly device, characterized in that the power supply control system includes: a three-phase AC power supply; an AC / DC converter connected to the three-phase AC power supply, for converting the three-phase AC voltage into a DC output voltage; a monitoring device powered by the DC output voltage of the AC / DC converter, for monitoring the operating status of the three-phase AC power supply; and a buffer power supply charged by the DC output voltage of the AC / DC converter, for providing a buffered DC voltage when a power outage occurs in the three-phase AC power supply.

[0009] The power supply control system for the screw assembly device according to the present application can have the following technical advantages: First, by setting a monitoring device for monitoring the operating state of the three-phase AC power supply, the troubleshooting of the three-phase AC power supply for external power supply to the power supply control system can be intuitively completed, which helps to improve the troubleshooting efficiency of the power supply control system, thereby shortening the fault handling time. Second, by setting a buffer power supply for providing a buffer DC voltage when the three-phase AC power supply is powered off, it is possible to avoid damage to the power supply control system due to, for example, abnormal power failures, such as surges caused by them, and effectively improve the degree of protection of the power supply control system when the three-phase AC power supply for external power supply to the power supply control system is unstable, thereby ensuring the safety of related electronic devices and data in the power supply control system. Third, the monitoring device and the buffer power supply are connected to the same AC / DC converter and can obtain electrical energy from the same AC / DC converter, which helps to simplify the overall circuit structure of the power supply control system and thus reduce the manufacturing cost of the power supply control system itself.

[0010] In some embodiments, the AC / DC converter may have three voltage input terminals, and each of the three voltage input terminals is connected to a phase line of a three-phase AC power source via a switching element.

[0011] In some embodiments, the AC / DC converter may have a first voltage output terminal and a second voltage output terminal, a first DC output voltage exists between the first voltage output terminal and the second voltage output terminal, and the first DC output voltage is supplied to the buffer power supply.

[0012] In some embodiments, the first voltage output terminal may branch out into a plurality of first tap output ports connected in parallel to each other; and / or the second voltage output terminal may branch out into a plurality of second tap output ports connected in parallel to each other.

[0013] In some embodiments, the buffered power supply may have a first charging port and a second charging port for charging, wherein the first charging port is connected to a first voltage output terminal of the AC / DC converter, and the second charging port is connected to a second voltage output terminal of the AC / DC converter.

[0014] In some embodiments, the buffered power supply may have a first power supply port and a second power supply port for providing a buffered DC voltage, wherein the first power supply port is connected to the plurality of first tap output ports connected in parallel, and the second power supply port is connected to the plurality of second tap output ports connected in parallel.

[0015] In some embodiments, the AC / DC converter may further have a third voltage output terminal, a second DC output voltage exists between the third voltage output terminal and the first voltage output terminal, and the second DC output voltage is supplied to the monitoring device.

[0016] In some implementations, the third voltage output terminal may be configured as a ground port.

[0017] In some embodiments, the monitoring device may include three acquisition ports and at least one indicator light, each of the three acquisition ports is respectively connected to a phase line of a three-phase AC power supply to acquire corresponding phase voltage parameters, and the at least one indicator light is used to indicate the operating status of the three-phase AC power supply according to the acquired phase voltage parameters.

[0018] In some embodiments, the monitoring device may be designed as a voltage monitoring relay.

[0019] In some embodiments, the monitoring device may be configured to be in communication connection with the buffer power supply so as to be able to control the buffer power supply according to the operating state of the three-phase AC power supply.

[0020] In some embodiments, the power supply control system may be disposed in a control cabinet and include a temperature regulating device connected to a three-phase AC power supply for regulating the ambient temperature within the control cabinet.

[0021] In some embodiments, the temperature adjustment device may have a first port and a second port for obtaining electrical energy, wherein the first port is connected to a phase line of a three-phase AC power source, and the second port is connected to a neutral line of the three-phase AC power source.

[0022] In some embodiments, the monitoring device may be communicatively connected to the temperature regulating device so as to be able to control the temperature regulating device according to the operating state of the three-phase AC power supply.

[0023] In some embodiments, the screw assembly device may be configured as a flow drill screw tightening device.

[0024] A second aspect of the present application provides a screw assembly device, which includes the above-mentioned power supply control system for the screw assembly device.

[0025] Features, functions, embodiments and technical effects according to one aspect of the present application can be applied in the same manner to other aspects of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present application will be described in more detail below with reference to the accompanying drawings and by means of specific embodiments. The schematic drawings are briefly described as follows:

[0027] Figure 1 A schematic diagram of a power supply control system for a screw assembly device according to some embodiments of the present application is shown;

[0028] Figure 2 Shows Figure 1 A schematic diagram of a buffer power supply of a power supply control system in FIG.

[0029] Figure 3 Shows Figure 1 A schematic diagram of a monitoring device of a power supply control system;

[0030] Figure 4 Shows Figure 1 Schematic diagram of the temperature regulation device of the power supply control system. DETAILED DESCRIPTION

[0031] The present application will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and fully explain the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0032] It should be understood that the terms used herein are only used to describe specific embodiments and are not intended to limit the scope of the present application. All terms (including technical terms and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0033] As used herein, spatial relational terms such as "upper," "lower," "left," "right," "front," "rear," "higher," "lower," etc. may describe the relationship of one feature to another feature in the accompanying drawings. It should be understood that the spatial relational terms encompass different orientations of the device in use or operation in addition to the orientation shown in the accompanying drawings. For example, features previously described as being "below" other features may now be described as being "above" the other features when the device in the accompanying drawings is turned over. The device may also be otherwise oriented (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0034] Herein, the term "A or B" includes "A and B" and "A or B" rather than exclusively including only "A" or only "B", unless specifically stated otherwise.

[0035] In this document, the terms "illustrative" or "exemplary" mean "used as an example, instance or illustration" rather than as a "model" to be exactly copied. Any implementation described exemplarily herein is not necessarily to be interpreted as preferred or advantageous over other implementations. Moreover, the present application is not limited by any stated or implied theory given in the above technical field, background technology, utility model content or specific implementation.

[0036] As used herein, the term "substantially" is intended to include any minor variations due to design or manufacturing defects, tolerances of devices or components, environmental influences, and / or other factors.

[0037] In this document, the term "partially" may be any proportion of a portion, such as greater than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or even 100%, i.e., all.

[0038] In addition, the terms "first", "second" and the like may also be used herein for reference purposes only, and thus are not intended to be limiting. For example, the terms "first", "second" and other such numerical terms referring to structures or elements do not imply a sequence or order unless the context clearly indicates otherwise.

[0039] Next reference Figures 1 to 4 Various aspects according to the present application are described in detail.

[0040] Figure 1 A schematic diagram of a power supply control system 10 for a screw assembly device according to some embodiments of the present application is shown. Figure 2 Shows Figure 1 Schematic diagram of a buffer power supply 20 of a power supply control system 10 in FIG. Figure 3 Shows Figure 1Schematic diagram of the monitoring device 30 of the power supply control system 10. Figure 4 Shows Figure 1 Schematic diagram of the temperature adjustment device 40 of the power supply control system 10.

[0041] like Figure 1 As shown, the power supply control system 10 for a screw assembly device according to the present application includes: a three-phase AC power supply 50; an AC / DC converter 60 connected to the three-phase AC power supply 50, for converting the three-phase AC voltage into a DC output voltage; a monitoring device 30 connected to the AC / DC converter 60, the monitoring device 30 is powered by the DC output voltage of the AC / DC converter 60 and is used to monitor the operating status of the three-phase AC power supply 50; and a buffer power supply 20 connected to the AC / DC converter 60, the buffer power supply 20 can be charged by the DC output voltage of the AC / DC converter 60, so as to provide a buffer DC voltage when a power outage occurs in the three-phase AC power supply 50.

[0042] The power supply control system 10 for the screw assembly device according to the present application can have the following technical advantages: First, by setting a monitoring device 30 for monitoring the operating state of the three-phase AC power supply 50, it is possible to intuitively complete the troubleshooting of the three-phase AC power supply 50 for external power supply to the power supply control system 10, which helps to improve the troubleshooting efficiency of the power supply control system 10, thereby shortening the fault handling time. Second, by setting a buffer power supply 20 for providing a buffer DC voltage when the three-phase AC power supply 50 is powered off, it is possible to avoid damage to the power supply control system 10 caused by a surge, such as caused by an abnormal power outage, and effectively improve the degree of protection of the power supply control system 10 when the three-phase AC power supply 50 for external power supply to the power supply control system 10 is unstable, thereby ensuring the safety of related electronic devices and data in the power supply control system 10. Third, the monitoring device 30 and the buffer power supply 20 are connected to the same AC / DC converter 60 and can obtain electrical energy from the same AC / DC converter 60, which helps to simplify the overall circuit structure of the power supply control system 10 and thus reduce the manufacturing cost of the power supply control system 10 itself. This will be described below with the help of Figures 1 to 4 Elaborate in more detail.

[0043] like Figure 1As shown, the power supply control system 10 for the screw assembly device according to the present application includes a three-phase AC power supply 50. The three-phase AC power supply 50 includes three phase lines L1, L2, L3 and a neutral line N. Here, it can be stipulated that the voltage between each phase line L1, L2, L3 and the neutral line N, that is, the phase voltage can be 220V, and the voltage between every two phase lines L1, L2, L3, that is, the line voltage can be 380V. In addition, the power supply control system 10 may include one or more grounding ports PE for grounding.

[0044] Continue to see Figure 1 , an AC / DC converter 60 is connected to the three-phase AC power supply 50 for converting the three-phase AC voltage into a DC output voltage. Here, the AC / DC converter 60 can be, for example, an AC / DC power supply produced by Siemens and having a model number of SITOP PSU300M24V / 20A. The AC / DC converter 60 can have three voltage input terminals 601, 602, and 603, and each of the three voltage input terminals 601, 602, and 603 is connected to a phase line L1, L2, and L3 of the three-phase AC power supply 50 via a switching element S. Here, these switching elements S can be individually operated according to working needs to connect and disconnect the connection between each voltage input terminal 601, 602, and 603 and the corresponding phase line L1, L2, and L3.

[0045] In some embodiments, the AC / DC converter 60 may have a first voltage output terminal 605, a second voltage output terminal 606, and a third voltage output terminal 607. A first DC output voltage exists between the first voltage output terminal 605 and the second voltage output terminal 606, and the first DC output voltage can be set to 24V, for example, and can be supplied to the buffer power supply 20. A second DC output voltage exists between the first voltage output terminal 605 and the third voltage output terminal 607, and the second DC output voltage can be set to 24V, for example, and can be supplied to the monitoring device 30. Here, the third voltage output terminal 607 can be configured to be grounded and connected to the ground port PE, for example. In addition, the first voltage output terminal 605 can branch out a plurality of first tap output ports 6051 connected in parallel to each other. The second voltage output terminal 606 can branch out a plurality of second tap output ports 6061 connected in parallel to each other. The first DC output voltage can be set to exist between any of the first tap output ports 6051 and any of the second tap output ports 6061, so as to power the electronic device of the screw assembly device for controlling the screw assembly process. Here, the electronic components of the screw assembly device for controlling the screw assembly process may include, for example, a controller, a relay, and an IO module for controlling the screw assembly process.

[0046] See also Figure 1 and Figure 2 , the first DC output voltage between the first voltage output terminal 605 and the second voltage output terminal 606 of the AC / DC converter 60 is supplied to the buffer power supply 20. Specifically, the buffer power supply 20 may have a first charging port 201 and a second charging port 202 for charging, the first charging port 201 is connected to the first voltage output terminal 605 of the AC / DC converter 60, and the second charging port 202 is connected to the second voltage output terminal 606 of the AC / DC converter 60. In addition, the buffer power supply 20 may have a first power supply port 203 and a second power supply port 204 for providing a buffered DC voltage, the first power supply port 203 is connected to the plurality of first tap output ports 6051 connected in parallel, and the second power supply port 204 is connected to the plurality of second tap output ports 6061 connected in parallel. The voltage difference between the first power supply port 203 and the second power supply port 204 may be, for example, equal to the first DC output voltage (which may be, for example, 24V as described above). That is, here, the voltage difference between the first power supply port 203 and the second power supply port 204 may be, for example, 24V. Thus, the buffer power supply 20 can be charged by the first DC output voltage of the AC / DC converter 60, so as to provide a buffer DC voltage (which can be, for example, 24 V) for the plurality of first tap output ports 6051 and the plurality of second tap output ports 6061 when a power failure occurs in the three-phase AC power supply 50. In addition, the buffer power supply 20 can have an indicator 205, such as an LED lamp, for indicating its own state.

[0047] Here, for example, the buffer power supply 20 may be a power supply of model QUINT-BUFFER / 24DC / 20 produced by Phoenix Contact. The buffer power supply 20 may be configured to provide a predetermined stable buffer DC voltage (which may be, for example, 24V) to the first tap output port 6051 and the second tap output port 6061 for a continuous buffering time, for example, within 0.1 seconds to 10 seconds, especially within 0.2 seconds to 4 seconds, when the external three-phase AC power supply 50 is suddenly powered off, so as to ensure that the electronic components connected to the first tap output port 6051 and the second tap output port 6061 of the power supply control system 10 will not be damaged due to abnormal power failure. In some cases, abnormal power failure may cause surges, which may damage the electronic components. Therefore, by providing a buffer power supply 20 for providing a buffered DC voltage when a power outage occurs in the three-phase AC power supply 50, the degree of protection of the power supply control system 10 is effectively improved when the three-phase AC power supply 50 that externally supplies power to the power supply control system 10 is unstable, thereby avoiding damage to the power supply control system 10 due to, for example, abnormal power outages (such as possible power surges caused by them), and ensuring the safety of related electronic components in the power supply control system 10 and the data stored therein.

[0048] See also Figure 1 and Figure 3 , the second DC output voltage between the first voltage output terminal 605 and the third voltage output terminal 607 of the AC / DC converter 60 is supplied to the monitoring device 30. Thus, the monitoring device 30 can be powered by the second DC output voltage of the AC / DC converter 60 (which can be, for example, 24V as described above). In order to monitor the operating state of the three-phase AC power supply 50, the monitoring device 30 may include three acquisition ports 301, 302, 303 and at least one indicator light H1, each of the three acquisition ports 301, 302, 303 is respectively connected to a phase line L1, L2, L3 of the three-phase AC power supply 50 to acquire corresponding phase voltage parameters, and the at least one indicator light H1 is used to indicate the operating state of the three-phase AC power supply 50 according to the acquired phase voltage parameters.

[0049] Here, the monitoring device 30 can be constructed as a voltage monitoring relay, such as a relay of model S3UM 24VDC UM 400 / 440VAC produced by Pilz. For example, the monitoring device 30 can be configured to monitor the operating state of an external three-phase AC power supply 50 within a voltage range of, for example, 380V±10%. Once the line voltage of the three-phase AC power supply 50 is out of tolerance, that is, for example, outside the voltage range of 380V±10%, the at least one indicator light H1 will light up. Thus, by providing a monitoring device 30 for monitoring the operating state of the three-phase AC power supply 50, the staff can intuitively complete the troubleshooting of the three-phase AC power supply 50 for external power supply to the power supply control system 10, which helps to improve the troubleshooting efficiency of the power supply control system 10, thereby shortening the fault handling time.

[0050] Generally, the power supply control system 10 is designed to operate at a conventional room temperature, for example, at a temperature of 10°C to 30°C. However, in some cases, for example, in a hot season, the ambient temperature of the power supply control system 10, for example, the temperature inside the control cabinet where the power supply control system 10 is located, may exceed the conventional room temperature, for example, it may reach 40°C or even above 45°C. If the power supply control system 10 operates for a long time in such a high temperature environment, the electronic components in the power supply control system 10 may gradually age, and even unexpected shutdowns may occur. Such problems can be solved by the power supply control system 10 according to the present application.

[0051] To this end, the power supply control system 10 can be arranged in a control cabinet (not shown), and includes a temperature regulating device 40 connected to a three-phase AC power supply 50 (see Figure 1 and Figure 4 ) to adjust the ambient temperature within the control cabinet. Figure 1 and Figure 4 The temperature regulating device 40 may have a first port 401 and a second port 402 for obtaining electric energy, wherein the first port 401 is connected to a phase line L1, L2, L3 of a three-phase AC power source 50 (in Figure 1 The second port 402 is connected to the neutral line N of the three-phase AC power supply 50. In addition, the temperature adjustment device 40 may have a grounding port 403 for connecting to a grounding port PE provided in the control cabinet. Here, the temperature adjustment device 40 may be an air conditioner produced by Rittal with a model number of 3302100.

[0052] In the power supply control system 10 according to the present application, by installing the temperature adjustment device 40, even if the power supply control system 10 works in a high temperature season, the ambient temperature of the power supply control system 10, such as the temperature inside the control cabinet, can be adjusted to a desired temperature, such as below 30° C. Thus, the operational stability of the power supply control system 10 can be improved, and the damage to the power supply control system 10 caused by high temperature can be effectively avoided, thereby extending the service life of the power supply control system 10.

[0053] In addition, the monitoring device 30 can be connected to the buffer power supply 20 and / or the temperature regulating device 40 in communication, for example, by means of a communication cable or wireless communication technology, such as 2G to 5G communication technology or WIFI technology. Thus, the monitoring device 30 can control (for example, start or stop) the buffer power supply 20 and / or the temperature regulating device 40 according to the phase voltage parameters collected by it, so that two or three of the monitoring device 30, the buffer power supply 20 and the temperature regulating device 40 can work in coordination with each other, so as to improve the power supply for the screw assembly device as much as possible. For example, when the monitoring device 30 determines that the line voltage of the three-phase AC power supply 50 is out of power or out of tolerance, that is, it is outside the voltage range of 380V±10%, it can notify the buffer power supply 20 with a signal, so that the buffer power supply 20 provides the buffer DC voltage (which can be 24V, for example) to the plurality of first tap output ports 6051 and the plurality of second tap output ports 6061.

[0054] In addition, the present application also proposes a screw assembly device, which includes the above-mentioned power supply control system 10 for the screw assembly device. In some embodiments, the screw assembly device can be configured as a flow drill screw tightening device.

[0055] Although the exemplary embodiments of the present application have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present application without departing from the spirit and scope of the present application in essence. Therefore, all changes and modifications are included in the protection scope of the present application as defined by the claims. The present application is defined by the attached claims, and the equivalents of these claims are also included.

Claims

1. A power supply control system for a screw assembly device, characterized in that: The power supply control system comprises: Three-phase AC power supply; An AC / DC converter connected to a three-phase AC power source, used to convert the three-phase AC voltage into a DC output voltage; a monitoring device powered by the DC output voltage of the AC / DC converter for monitoring the operating status of the three-phase AC power supply; and A buffer power supply charged by the DC output voltage of an AC / DC converter is used to provide a buffer DC voltage when a three-phase AC power supply is cut off.

2. The power supply control system for a screw assembly device according to claim 1, characterized in that: The AC / DC converter has three voltage input terminals, each of which is connected to a phase line of a three-phase AC power source via a switching element.

3. The power supply control system for a screw assembly device according to claim 1 or 2, characterized in that: The AC / DC converter has a first voltage output terminal and a second voltage output terminal. A first DC output voltage exists between the first voltage output terminal and the second voltage output terminal. The first DC output voltage is supplied to a buffer power supply.

4. The power supply control system for a screw assembly device according to claim 3, characterized in that: The first voltage output terminal branches out into a plurality of first tap output ports connected in parallel to each other; and / or the second voltage output terminal branches out into a plurality of second tap output ports connected in parallel to each other.

5. The power supply control system for a screw assembly device according to claim 3, characterized in that: The buffer power supply has a first charging port and a second charging port for charging, wherein the first charging port is connected to a first voltage output terminal of the AC / DC converter, and the second charging port is connected to a second voltage output terminal of the AC / DC converter.

6. The power supply control system for a screw assembly device according to claim 4, characterized in that: The buffer power supply has a first power supply port and a second power supply port for providing a buffered DC voltage, the first power supply port is connected to the plurality of first tap output ports connected in parallel, and the second power supply port is connected to the plurality of second tap output ports connected in parallel.

7. The power supply control system for a screw assembly device according to claim 3, characterized in that: The AC / DC converter further has a third voltage output terminal. A second DC output voltage exists between the third voltage output terminal and the first voltage output terminal. The second DC output voltage is supplied to the monitoring device.

8. The power supply control system for a screw assembly device according to claim 7, characterized in that: The third voltage output terminal is configured as a ground port.

9. The power supply control system for a screw assembly device according to claim 1 or 2, characterized in that: The monitoring device includes three acquisition ports and at least one indicator light. Each of the three acquisition ports is connected to a phase line of a three-phase AC power supply to acquire corresponding phase voltage parameters. The at least one indicator light is used to indicate the operating status of the three-phase AC power supply according to the acquired phase voltage parameters.

10. The power supply control system for a screw assembly device according to claim 1 or 2, characterized in that: The monitoring device is designed as a voltage monitoring relay.

11. The power supply control system for a screw assembly device according to claim 1 or 2, characterized in that: The monitoring device is communicatively connected to the buffer power supply so as to be able to control the buffer power supply according to the operating state of the three-phase AC power supply.

12. The power supply control system for a screw assembly device according to claim 1 or 2, characterized in that: The power supply control system is arranged in a control cabinet and comprises a temperature regulating device connected to a three-phase AC power supply for regulating the ambient temperature within the control cabinet.

13. The power supply control system for a screw assembly device according to claim 12, characterized in that: The temperature adjustment device has a first port and a second port for obtaining electric energy, wherein the first port is connected to a phase line of a three-phase AC power source, and the second port is connected to a neutral line of the three-phase AC power source.

14. The power supply control system for a screw assembly device according to claim 12, characterized in that: The monitoring device is communicatively connected with the temperature regulating device so as to be able to control the temperature regulating device according to the operating state of the three-phase AC power supply.

15. The power supply control system for a screw assembly device according to claim 1 or 2, characterized in that: The screw assembly device is configured as a flow drill screw tightening device.

16. A screw assembly device, characterized in that: The screw assembling device comprises a power supply control system for a screw assembling device according to any one of claims 1 to 15.

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