Inverter module for servo driver

Abstract

The utility model relates to the technical field of servo drivers, in particular to an inversion module for a servo driver, which comprises a first shell sleeve and a second shell sleeve, the first shell sleeve comprises a left side plate, a front panel and a bottom plate, and the second shell sleeve comprises a right side plate and a rear panel; first right-angle grooves are formed in the same ends of the left side plate and the right side plate to form a terminal seat supporting plate mounting position, and a terminal seat supporting plate is mounted at the terminal seat supporting plate mounting position; second right-angle grooves are formed in the other ends of the left side plate and the right side plate, a bus seat mounting position is formed between the two second right-angle grooves and the top of the rear panel, and a bus seat module is mounted at the bus seat mounting position; the module further comprises an upper cover located at the top, and the upper cover, the first shell sleeve and the second shell sleeve are connected with one another to form a module installation cavity. The inversion module is compact in structure, capable of achieving rapid assembly, good in heat dissipation effect and small in overall occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of servo drivers, in particular to an inverter module used for a servo driver. Background Art

[0002] Servo drives, also known as "servo controllers" and "servo amplifiers", are controllers used to control servo motors. Their function is similar to that of frequency converters on ordinary AC motors. They are part of the servo system and are mainly used in high-precision positioning systems. They are suitable for industrial control fields such as palletizing, wire cutting, punching machines, lasers, and 3C. Generally, the servo motor is controlled by three methods: position, speed, and torque to achieve high-precision transmission system positioning. It is a high-end product of transmission technology. Its working principle is as follows: Servo drive working principle (AC-DC-AC) First, the rectifier module rectifies the input three-phase AC power to obtain the corresponding DC voltage (i.e., the working process of the rectifier module), and then through the drive circuit, the DC power is converted into AC output power with adjustable frequency and voltage to drive the corresponding servo motor (i.e., the working process of the inverter module). In order to achieve the above functions, it is modularized according to different functions, and then constitutes a rectifier module for realizing the rectification function and an inverter module for realizing the inverter function.

[0003] Among them, the rectifier module (rectifier) ​​is realized by a three-phase rectifier bridge. Based on the characteristics of the diode, the 380V or 220V industrial frequency AC is rectified into DC, and then supplied to the inverter unit after filtering by a large capacitor. The core unit has a rectifier CPU board module and a rectifier driver board module. The functions of the rectifier CPU board module are host computer access, command reception, information display, and driver board monitoring; the functions of the rectifier driver board module are the rectifier filter circuit for the input industrial frequency AC, the switching power supply circuit for the rectifier control board, various necessary protections, and sampling monitoring circuits.

[0004] The inverter module (inverter) is implemented by a three-phase inverter bridge, which converts DC power into AC output power of the required frequency and voltage according to the instructions of the control circuit. The core unit has an inverter CPU board module and an inverter drive board module. The function of the inverter CPU board module is to realize multi-axis communication, host computer debugging, inverter drive circuit control, external I / O, and STO functions; the function of the inverter drive board module is to output the current to drive the AC motor and the power supply of the inverter control board according to the control signal of the control board.

[0005] Most of the existing inverters are assembled manually. Since each functional module needs to be wired, the internal structure of the packaging shell is complicated. Not only can the core inverter CPU board module and inverter drive board module not be arranged in an orderly manner and precisely wired, but it is also easy to cause mutual electrical interference between the modules during operation. On the other hand, if the traditional manual method is used to directly insert the connected CPU board module and drive board module into the cavity of the packaging shell, there is also a problem of poor heat dissipation, which makes it easy for the product to burn out due to high temperature due to improper heat dissipation in subsequent use, and even cause safety accidents.

[0006] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0007] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and provide an inverter module for a servo drive, which can effectively solve the technical problems of the complex structure of the inverter in the prior art, which leads to low assembly efficiency of the product and poor heat dissipation, which easily leads to high-temperature damage to the equipment.

[0008] The above objectives are achieved through the following technical solutions:

[0009] An inverter module for a servo drive, comprising a first shell and a second shell that can be connected to each other, the first shell comprising a left side plate, a front panel and a bottom plate that are connected to each other, and the second shell comprising a right side plate and a rear panel that are connected to each other;

[0010] A first right-angle groove is provided at the same end of the left plate and the right plate, and a terminal seat support plate installation position is formed between the two first right-angle grooves and the top of the front panel, and a terminal seat support plate is installed at the terminal seat support plate installation position; a second right-angle groove is provided at the other end of the left plate and the right plate, and a bus seat installation position is formed between the two second right-angle grooves and the top of the rear panel, and a bus seat module is installed at the bus seat installation position;

[0011] It also includes an upper cover at the top, and the upper cover, the first shell and the second shell are connected to each other to form a module installation cavity for installing an inverter CPU board module, an inverter drive board module and a heat dissipation module; the inverter drive board module includes a vertically arranged inverter power drive board, and a horizontally arranged inverter drive board and an inverter power drive board.

[0012] Furthermore, it also includes a support frame, which divides the module installation cavity into a left installation chamber, an upper installation chamber and a lower installation chamber that are interconnected, the left installation chamber is used to install the inverter power drive board, the upper installation chamber is used to install the inverter CPU board module, the inverter drive board and the inverter power drive board, and the lower installation chamber is used to install the heat dissipation module;

[0013] The inverter power drive board is arranged above the support frame, and the inverter drive board is arranged above the inverter power drive board;

[0014] The inverter power drive board includes a power drive board connection portion and a power drive board capacitor. The power drive board connection portion is used to electrically connect to the inverter drive board and the inverter power drive board located in the upper installation chamber. The power drive board capacitor is placed in the lower installation chamber and dissipates heat through the heat dissipation module.

[0015] Furthermore, the support frame is provided with heat dissipation grooves through which some components on the inverter power drive board can extend downward.

[0016] Furthermore, the heat dissipation module includes a radiator arranged in the lower installation chamber, and a fan assembly arranged on the inner side of the front panel, and a ventilation hole is opened on the rear panel.

[0017] Furthermore, the heat dissipation assembly includes a fan installation chamber arranged on the inner side of the front panel and a corresponding fan cover. A heat dissipation fan is embedded in the fan installation chamber and is limited and fixed by the fan cover.

[0018] Furthermore, the inverter CPU board module is vertically arranged in the upper installation chamber and is connected and fixed through the right side plate.

[0019] Furthermore, it also includes an output terminal board arranged in the upper installation chamber, and the output terminal seat on the output terminal board extends outward through a terminal seat through groove opened on the terminal seat support plate.

[0020] Furthermore, the busbar seat module includes a busbar seat arranged at the busbar seat installation position, and a protective cover matched therewith; the busbar seat is provided with a busbar copper bar connected to the inverter power drive board, and a communication pin plug connected to the inverter CPU board module;

[0021] Correspondingly, a control button display module is provided on the protective cover, and the control button display module is plugged into the communication pin plug via a socket.

[0022] Furthermore, a connecting copper bar capable of horizontally moving relative to the busbar copper bar is provided on the busbar copper bar, a waist-shaped groove is provided on the connecting copper bar, and the connecting copper bar is locked and connected to the busbar copper bar by a locking screw.

[0023] Furthermore, the upper cover is provided with a plurality of through slots for the communication sockets on the inverter CPU board module to extend out.

[0024] The inverter module for the servo drive provided by the utility model forms a module installation cavity for installing various functional modules through the interconnected first shell, second shell, and upper cover, and divides the module installation cavity into a left installation chamber, an upper installation chamber, and a lower installation chamber that are interconnected through a support frame, thereby realizing compact and neat assembly of the inverter CPU board module, the inverter drive board module, and the heat dissipation module; and also realizes quick assembly of the control button display module while assembling the protective cover through the control button display module integrated on the protective cover, which is also convenient for replacement and maintenance. The inverter module provided by this solution is not only compact in structure and can be quickly assembled, but also has good heat dissipation effect and occupies a small space overall. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the inverter module for the servo drive according to the utility model from a first perspective;

[0026] Figure 2 This is a second perspective structural schematic diagram of the inverter module for the servo drive according to the utility model;

[0027] Figure 3 This is a schematic diagram of the first shell and the second shell in the inverter module for the servo drive of the utility model after assembly;

[0028] Figure 4 This is an exploded view of the inverter module for the servo drive according to the utility model;

[0029] Figure 5 It is an assembly diagram of the support frame and the inverter power drive board of the inverter module for the servo drive described in the utility model;

[0030] Figure 6 This is a schematic diagram of the connection of various internal functional modules of the inverter module for the servo drive described in the utility model.

[0031] Graphic marking:

[0032] 1-first shell, 101-left side panel, 102-front panel, 103-bottom panel;

[0033] 2-second shell, 201-right side panel, 202-rear panel;

[0034] 3-inverter CPU board module, 301-communication socket;

[0035] 4-inverter drive board module, 401-inverter power drive board, 402-inverter drive board, 403-inverter power drive board, 404-power drive board connection part, 405-power drive board capacitor;

[0036] 5-heat dissipation module, 501-heat sink, 502-fan assembly, 503-ventilation hole, 504-fan installation chamber, 505-fan cover, 506-heat dissipation fan;

[0037] 6-terminal seat support plate, 601-terminal seat through slot;

[0038] 7-busbar seat module, 701-busbar seat, 702-, 703-busbar copper bar, 704-communication pin plug, 705-control button display module, 706-socket, 707-connecting copper bar, 708-waist groove, 709-locking screw;

[0039] 8-support frame, 801-heat dissipation slot;

[0040] 9-upper cover, 901-through slot;

[0041] 10- the first right angle groove;

[0042] 11-Terminal seat support plate installation position;

[0043] 12- second right angle groove;

[0044] 13-busbar seat installation position;

[0045] 14- output terminal board;

[0046] 15- output terminal block;

[0047] 16-module installation cavity;

[0048] 17-Insulation gasket. DETAILED DESCRIPTION

[0049] The utility model is further described in detail below based on the accompanying drawings and embodiments. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] like Figure 1 to Figure 4As shown, an inverter module for a servo drive includes a first shell 1 and a second shell 2 that can be connected to each other, wherein the first shell 1 includes a left side plate 101, a front panel 102 and a bottom plate 103 that are connected to each other, and the second shell 2 includes a right side plate 201 and a rear panel 202 that are connected to each other;

[0051] A first right-angle groove 10 is provided at the same end of the left side plate 101 and the right side plate 201, and a terminal seat support plate mounting position 11 is formed between the two first right-angle grooves 10 and the top of the front panel 102, and a terminal seat support plate 6 is installed at the terminal seat support plate mounting position 11; a second right-angle groove 12 is provided at the other end of the left side plate 101 and the right side plate 201, and a bus seat mounting position 13 is formed between the two second right-angle grooves 12 and the top of the rear panel 202, and a bus seat module 7 is installed at the bus seat mounting position 13;

[0052] It also includes an upper cover 9 at the top, and the upper cover 9, the first shell 1 and the second shell 2 are connected to each other to form a module installation cavity 16 for installing an inverter CPU board module 3, an inverter drive board module 4 and a heat dissipation module 5; the inverter drive board module 4 includes a vertically arranged inverter power drive board 401, and a horizontally arranged inverter drive board 402 and an inverter power drive board 403. The upper cover 9 is also provided with a plurality of through slots 901 for the communication socket 301 on the inverter CPU board module 3 to extend out.

[0053] Specifically, Figure 3 As shown, in this embodiment, the main parts of the first shell 1 and the second shell 2 are both L-shaped, which are convenient for mutual connection and easy to assemble.

[0054] like Figure 4 As shown, this embodiment further includes a support frame 8, and the support frame 8 divides the module installation chamber 16 into a left installation chamber, an upper installation chamber and a lower installation chamber that are interconnected, the left installation chamber is used to install the inverter power drive board 401, the upper installation chamber is used to install the inverter CPU board module 3, the inverter drive board 402 and the inverter power drive board 403, and the lower installation chamber is used to install the heat dissipation module 5;

[0055] The inverter power driving board 403 is arranged above the supporting frame 8, and the inverter driving board 402 is arranged above the inverter power driving board 403;

[0056] The inverter power drive board 401 includes a power drive board connection portion 404 and a power drive board capacitor 405. The power drive board connection portion 404 is used to electrically connect to the inverter drive board 402 and the inverter power drive board 403 located in the upper installation chamber. The power drive board capacitor 405 is placed in the lower installation chamber and dissipates heat through the heat dissipation module 5.

[0057] Specifically, the right side edge of the support frame 8 is connected to the inner wall of the right side panel 201, the front side edge of the support frame 8 is connected to the inner wall of the front panel 102, and the rear side edge of the support frame 8 is connected to the inner wall of the rear panel 202; and the left side edge of the support frame 8 is vertically connected to the inverter power drive board 401, and the inverter power drive board 401 is connected to the left side panel 101.

[0058] In order to further protect the inverter power drive board 401 and the inverter CPU board module 3, an insulating gasket 17 is provided between the inverter power drive board 401 and the inner wall of the left side plate 101, and between the inverter CPU board module 3 and the inner wall of the right side plate 201.

[0059] In addition, a heat dissipation groove 801 is provided on the support frame 8 so that some components on the inverter power drive board 403 can extend downward. Through this structure, some components on the inverter power drive board 403 can dissipate heat through the heat dissipation module 5 located in the lower installation chamber.

[0060] like Figures 4 to 6 As shown, as an optimization of the heat dissipation module 5 in this embodiment, the heat dissipation module 5 includes a radiator 501 arranged in the lower installation chamber, and a fan assembly 502 arranged inside the front panel 102, and a vent 503 is provided on the rear panel 202. Specifically, the fan assembly 502 inputs external air into the lower installation chamber, and the air is discharged to the outside of the vent 503 through the radiator 501; in this way, a benign heat dissipation duct can be formed, and the heat emitted by the power drive board capacitor 405 and some components on the inverter power drive board 403 conducted by the radiator can be continuously removed, thereby better cooling the internal temperature of the device.

[0061] The fan assembly 502 includes a fan installation chamber 504 and a corresponding fan cover 505 disposed inside the front panel 102. A heat dissipation fan 506 is embedded in the fan installation chamber 504 and is fixed by the fan cover 505. By supplying power to the heat dissipation fan 506, the driver rotates, and external air can be sucked into the lower installation chamber through the fan cover 505, thereby promoting subsequent heat dissipation.

[0062] like Figure 5 and Figure 6 As shown, the inverter CPU board module 3 in this embodiment is vertically arranged in the upper installation chamber and is connected and fixed by the right side plate 201. Specifically, the inverter CPU board module 3 is the inverter CPU board, which is vertically arranged in the upper installation chamber, parallel to the inverter power drive board 401, and electrically connected to the inverter drive board 402 and the inverter power drive board 403. Through this structure, the inverter power drive board 401, the inverter drive board 402, the inverter power drive board 403, and the inverter CPU board module 3 can be compactly and neatly arranged in the module installation cavity 16.

[0063] like Figure 5 As shown, the device also includes an output terminal board 14 arranged in the upper mounting chamber, and the output terminal seat 15 on the output terminal board 14 extends outward through the terminal seat through groove 601 opened on the terminal seat support plate 6 to facilitate external terminal wiring; in this embodiment, the output terminal board 14 is arranged between the inverter power drive board 401 and the inverter CPU board module 3, and is electrically connected to both.

[0064] like Figures 4 to 6 As shown, as an optimization of the busbar seat module 7 in this embodiment, the busbar seat module 7 includes a busbar seat 701 arranged at the busbar seat installation position 13, and a protective cover 702 matched therewith; a busbar copper bar 703 connected to the inverter power drive board 401, and a communication pin plug 704 connected to the inverter CPU board module 3 are arranged in the busbar seat 701;

[0065] Correspondingly, a control button display module 705 is provided on the protective cover 702 , and the control button display module 705 is plugged into the communication pin plug 704 via a socket 706 .

[0066] It should be noted that the function of the control button display module 705 described in this embodiment is to digitally display the working status of the device, and parameters can be adjusted and set through buttons. Its function belongs to the industry's well-known technology, and this embodiment only protects its structure and its connection method.

[0067] like Figure 5 and Figure 6 As shown, the busbar copper bar 703 is also provided with a connecting copper bar 707 that can move horizontally relative to the busbar copper bar 703. The connecting copper bar 707 is provided with a waist-shaped groove 708 and is locked and connected to the busbar copper bar 703 by a locking screw 709.

[0068] Specifically, the present embodiment adopts the connecting copper bar 707, which can be stored and hidden by moving the locking screw 709 inward and tightening it when it is not in use; when it is needed, it only needs to be moved outward and tightened to extend the connecting copper bar 707 so as to be electrically connected to the adjacent functional modules.

[0069] The above description is only for illustrating the implementation mode of the present utility model and is not intended to limit the present utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An inverter module for a servo drive, characterized in that: It comprises a first shell (1) and a second shell (2) which can be connected to each other, wherein the first shell (1) comprises a left side panel (101), a front panel (102) and a bottom panel (103) which are connected to each other, and the second shell (2) comprises a right side panel (201) and a rear panel (202) which are connected to each other; A first right-angle groove (10) is provided at the same end of the left side plate (101) and the right side plate (201); a terminal seat support plate mounting position (11) is formed between the two first right-angle grooves (10) and the top of the front panel (102); a terminal seat support plate (6) is mounted on the terminal seat support plate mounting position (11); a second right-angle groove (12) is provided at the other end of the left side plate (101) and the right side plate (201); a bus seat mounting position (13) is formed between the two second right-angle grooves (12) and the top of the rear panel (202); a bus seat module (7) is mounted on the bus seat mounting position (13); The invention also comprises an upper cover (9) located at the top, wherein the upper cover (9), the first shell (1) and the second shell (2) are connected to each other to form a module installation cavity (16) for installing an inverter CPU board module (3), an inverter drive board module (4) and a heat dissipation module (5); the inverter drive board module (4) comprises an inverter power drive board (401) arranged vertically, and an inverter drive board (402) and an inverter power drive board (403) arranged horizontally.

2. The inverter module for a servo drive according to claim 1, characterized in that: It also includes a support frame (8), wherein the support frame (8) divides the module installation cavity (16) into a left installation chamber, an upper installation chamber and a lower installation chamber that are interconnected, the left installation chamber being used to install the inverter power drive board (401), the upper installation chamber being used to install the inverter CPU board module (3), the inverter drive board (402) and the inverter power drive board (403), and the lower installation chamber being used to install the heat dissipation module (5); The inverter power drive board (403) is arranged above the support frame (8), and the inverter drive board (402) is arranged above the inverter power drive board (403); The inverter power drive board (401) comprises a power drive board connection portion (404) and a power drive board capacitor (405); the power drive board connection portion (404) is used to be electrically connected to the inverter drive board (402) and the inverter power drive board (403) located in the upper installation chamber; the power drive board capacitor (405) is placed in the lower installation chamber and dissipates heat through the heat dissipation module (5).

3. The inverter module for a servo drive according to claim 2, characterized in that: The support frame (8) is also provided with a heat dissipation slot (801) through which some components on the inverter power drive board (403) can extend downward.

4. The inverter module for a servo drive according to claim 2 or 3, characterized in that: The heat dissipation module (5) comprises a radiator (501) arranged in the lower installation chamber, and a fan assembly (502) arranged inside the front panel (102), and a ventilation hole (503) is provided on the rear panel (202).

5. The inverter module for a servo drive according to claim 4, characterized in that: The fan assembly (502) comprises a fan installation chamber (504) arranged on the inner side of the front panel (102) and a corresponding fan cover (505); a heat dissipation fan (506) is embedded in the fan installation chamber (504) and is fixed in position by the fan cover (505).

6. The inverter module for a servo drive according to claim 2, characterized in that: The inverter CPU board module (3) is vertically arranged in the upper installation chamber and is connected and fixed via the right side plate (201).

7. The inverter module for a servo drive according to claim 2, characterized in that: It also comprises an output terminal board (14) arranged in the upper installation chamber, wherein the output terminal seat (15) on the output terminal board (14) protrudes outward through a terminal seat through slot (601) provided on the terminal seat support plate (6).

8. The inverter module for a servo drive according to claim 1, characterized in that: The busbar seat module (7) comprises a busbar seat (701) arranged at the busbar seat installation position (13), and a protective cover (702) matching the busbar seat; a busbar copper bar (703) connected to the inverter power drive board (401) and a communication pin plug (704) connected to the inverter CPU board module (3) are arranged in the busbar seat (701); Correspondingly, a control button display module (705) is provided on the protective cover (702), and the control button display module (705) is plugged into the communication pin plug (704) via a socket (706).

9. The inverter module for a servo drive according to claim 8, characterized in that: The busbar copper bar (703) is also provided with a connecting copper bar (707) capable of horizontally moving relative to the busbar copper bar (703); the connecting copper bar (707) is provided with a waist-shaped groove (708) and is locked and connected to the busbar copper bar (703) via a locking screw (709).

10. The inverter module for a servo drive according to claim 1, characterized in that: The upper cover (9) is also provided with a plurality of through slots (901) through which the communication sockets (301) on the inverter CPU board module (3) extend.

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