An assembly device for a frequency converter terminal board

Abstract

The present invention belongs to the field of frequency converter manufacturing, and discloses an assembly device for frequency converter terminal boards, including a support frame, a three-axis locking rack, a terminal board positioning mechanism, and a terminal plane motion mechanism. The free end of the three-axis locking rack is connected to a second mounting plate, and a screw machine and a camera for misalignment adjustment by a misalignment cylinder are provided on the second mounting plate. The assembly device is also equipped with a transfer conveyor line, a loading and unloading machine, and a robot slide fixedly connected to the support frame, and a six-axis linkage robot with a clamping claw is provided on the robot slide. The assembly device for frequency converter terminal boards of the present invention has a high degree of automation, high assembly efficiency, good stability, strong applicability, and supports the assembly of different types of frequency converter terminal boards.

Description

Technical Field

[0001] The invention belongs to the field of frequency converter manufacturing, and in particular relates to an assembly device for a frequency converter terminal board. Background Art

[0002] The variable-frequency drive (VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The inverter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, and microprocessor unit. The inverter adjusts the voltage and frequency of the output power supply by the internal IGBT switching, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the inverter has many protection functions, such as over-current, over-voltage, overload protection, etc.

[0003] As the chemical industry grows and develops, the demand for electric energy is also increasing, and the corresponding output of frequency converters is increasing. The traditional production method of frequency converters is manual assembly, which is inefficient, has high labor costs, poor stability, and is prone to defective products.

[0004] In order to meet the needs of automated production as much as possible, our company has developed an inverter terminal board assembly device for inverter customers to improve the assembly efficiency and quality of inverter terminal boards. Summary of the invention

[0005] In view of this, the object of the present invention is to provide an assembly device for a frequency converter terminal board. The present invention aims to solve the problems of low efficiency, poor stability and easy production of defective products in the traditional manual assembly of frequency converter terminal boards.

[0006] To achieve the above-mentioned purpose, the present invention provides an assembly device for a frequency converter terminal board, comprising a support frame and a three-axis locking rack, a terminal board positioning mechanism and a terminal plane motion mechanism arranged on the support frame, the free end of the three-axis locking rack is fixedly connected to a second mounting plate, the second mounting plate is provided with a fourth offset cylinder, a fourth guide rail and a camera bracket, the fourth guide rail is slidably connected to a fourth slide table with a screw machine installed, the screw machine is equipped with a screw feeder, the second mounting plate is provided with a vacuum generator matched with the screw machine, the telescopic end of the fourth offset cylinder is fixedly connected to the fourth slide table, and the camera bracket is installed with a camera;

[0007] The terminal board positioning mechanism is used to clamp and fix terminal boards of different sizes;

[0008] The terminal plane movement mechanism is used to fix the terminal and move the terminal to the position directly below the hole of the terminal board to be assembled;

[0009] The assembly device is also equipped with a transfer conveyor line, on which a plurality of carriers are placed, and the carriers are used to load the assembled terminal board components. A plurality of loading and unloading machines are provided at one end of the support frame away from the transfer conveyor line, and the loading and unloading machines are used to provide a material box containing terminal board assembly components. A robot slide fixedly connected to the support frame is provided between the three-axis locking rack and the loading and unloading machines, and a six-axis linkage robot with a gripper is provided on the robot slide, and the robot slide is equipped with a drive motor for driving the six-axis linkage robot to move horizontally;

[0010] The assembly device is also provided with a high-definition vision system, which is used to assist in the assembly of the inverter terminal board.

[0011] The two ends of the two lifting cylinders are fixedly connected to the mounting frame which is slidably connected to the vertical baffle plates, and the two ends of the two lifting cylinders are fixedly connected to the mounting frame which is slidably connected to the vertical baffle plates. A first limiting rail is provided on the left and right inner sides of the mounting frame, and the first limiting rails are slidably connected to the first limiting blocks at both ends. A side clamp is fixedly connected between the two first limiting blocks corresponding to the left and right sides of the mounting frame, and the two side clamps are parallel to each other, and the side clamps are perpendicular to the vertical baffle plates. The left and right inner sides of the mounting frame are rotatably connected to the first two-way threaded rods, and the two threaded sections of a single first two-way threaded rod are respectively threadedly connected to the two first limit blocks on the same side of the mounting frame, and a transmission wheel is fixedly connected to the middle portion of one of the first two-way threaded rods, and a first adjusting motor is provided on the outside of the mounting frame. The output of the first adjusting motor The output end is fixedly connected with a driving wheel, and the driving wheel is transmitted to the transmission wheel by a first belt, and the front side of the installation frame is provided with a butt plate that butts against the vertical baffle, and the two first bidirectional threaded rods are both penetrated by the butt plate and are fixedly connected with the driven wheel, and the two driven wheels are connected by a second belt transmission; a second limiting rail is provided at the front and rear inner sides of the installation frame, and the two ends of the second limiting rail are slidably connected with the second limiting block, and an end clamping strip is fixedly connected between the two second limiting blocks corresponding to the front and rear sides of the installation frame, and the two end clamping strips are parallel to each other. The rear inner side of the installation frame is rotatably connected with the second bidirectional threaded rod, and the two threaded sections of the second bidirectional threaded rod are respectively threadedly connected with the two second limiting blocks, and the middle part of the second bidirectional threaded rod is fixedly connected with the passive wheel, and a second adjusting motor is provided on the outside of the installation frame, and the output end of the second adjusting motor is fixedly connected with the driving wheel, and the driving wheel is transmission-connected to the passive wheel through a third belt.

[0012] Furthermore, the terminal plane motion mechanism is located on the lower inner side of the two vertical baffles, and the terminal plane motion mechanism includes an X-direction slide rail, a first slide seat is slidably connected to the X-direction slide rail, a first linear motor for driving the first slide seat to move along the X-direction slide rail is provided on one side of the X-direction slide rail, a Y-direction slide rail is fixedly connected to the first slide seat, a second slide seat is slidably connected to the Y-direction slide rail, a second linear motor for driving the second slide seat to move along the Y-direction slide rail is provided on one side of the Y-direction slide, two relatively arranged positioning cylinders are installed on the upper side of the second slide, the telescopic ends of the two positioning cylinders are fixedly connected to clamps, and a material sensor is also provided on one side of the second slide seat.

[0013] Furthermore, the loading and unloading machine includes a material box elevator and a profile frame arranged on the outside of the support frame. An electric roller docking platform is provided on the lifting platform of the material box elevator, and an upper conveyor line and a lower conveyor line are provided on the profile frame. When the electric roller docking platform moves to the top, it faces the upper conveyor line, and when the electric roller docking platform moves to the bottom, it faces the lower conveyor line.

[0014] Beneficial effects:

[0015] The assembly device for the frequency converter terminal board of the present invention has high automation, high assembly efficiency, good stability, strong applicability, and supports automatic assembly of frequency converter terminal boards of different sizes and specifications.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an assembly device for a frequency converter terminal board;

[0018] Figure 2 It is a structural schematic diagram of the terminal board positioning mechanism and the terminal plane motion mechanism from the first perspective;

[0019] Figure 3 It is a structural schematic diagram of the terminal board positioning mechanism and the terminal plane motion mechanism from a second perspective;

[0020] Figure 4 It is a structural schematic diagram of the loading and unloading machine;

[0021] The reference numerals in the figure are as follows: three-axis locking rack 1201, second mounting plate 1202, fourth offset cylinder 1203, terminal plane motion mechanism 121, X-direction slide rail 1211, Y-direction slide rail 1212, terminal board positioning mechanism 122, vertical baffle 1221, lifting cylinder 1222, mounting frame 1223, first limiting rail 1224, first limiting block 1225, side clamp 1226, first bidirectional threaded rod 1227, transmission wheel 122 8. The first adjusting motor 1229, the driving wheel 1230, the stop plate 1231, the driven wheel 1232, the second limiting rail 1233, the second limiting block 1234, the end clamp 1235, the second bidirectional threaded rod 1236, the passive wheel 1237, the second adjusting motor 1238, the driving wheel 1239, the loading and unloading machine 13, the material box elevator 131, the profile frame 132, the electric roller docking platform 133, the upper conveyor line 134, and the lower conveyor line 135. DETAILED DESCRIPTION

[0022] In order to make the technical solutions, advantages and purposes of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of this application.

[0023] like Figure 1-Figure 4 As shown, the present invention provides an assembly device for a frequency converter terminal board, comprising a support frame and a three-axis locking rack 1201, a terminal board positioning mechanism 122 and a terminal plane motion mechanism 121 arranged on the support frame, the free end of the three-axis locking rack 1201 is fixedly connected with a second mounting plate 1202, the second mounting plate 1202 is mounted with a fourth offset cylinder 1203, a fourth guide rail and a camera bracket, the fourth guide rail is slidably connected with a fourth slide mounted with a screw machine, the screw machine is equipped with a screw feeder, the second mounting plate 1202 is equipped with a vacuum generator matched with the screw machine, the telescopic end of the fourth offset cylinder 1203 is fixedly connected with the fourth slide, and the camera bracket is mounted with a camera;

[0024] The terminal board positioning mechanism 122 is used to clamp and fix terminal boards of different sizes. The terminal board positioning mechanism 122 is located on the inner side of the three-axis locking frame 1201. The terminal board positioning mechanism 122 includes two vertical baffles 1221 fixedly connected to the support frame. The outer sides of the two vertical baffles 1221 are both installed with lifting cylinders 1222. The telescopic ends of the two lifting cylinders 1222 are both fixedly connected with the installation frame 1223 that is slidably connected to the vertical baffles 1221. The left and right inner sides of the installation frame 1223 are both provided with first limiting rails 1224. Both ends of the first limiting rails 1224 are slidably connected with first limiting blocks 1225. The installation frame A side clamp 1226 is fixedly connected between the two first limit blocks 1225 corresponding to the left and right sides of 1223, the two side clamps 1226 are parallel to each other, and the side clamps 1226 and the vertical baffle 1221 are perpendicular to each other. The left and right inner sides of the installation frame 1223 are rotatably connected with first bidirectional threaded rods 1227, and the two threaded sections of a single first bidirectional threaded rod 1227 are respectively threadedly connected to the two first limit blocks 1225 on the same side of the installation frame 1223, and a transmission wheel 1228 is fixedly connected to the middle of one of the first bidirectional threaded rods 1227. A first adjusting motor 1229 is installed on the left side of the installation frame 1223. The output end of the regulating motor 1229 is fixedly connected to a driving wheel 1230, and the driving wheel 1230 is connected to the transmission wheel 1228 through a first belt. A plate 1231 that abuts against the vertical baffle 1221 is provided on the front side of the mounting frame 1223. Two first bidirectional threaded rods 1227 both penetrate the plate 1231 and are fixedly connected to a driven wheel 1232. The two driven wheels 1232 are connected through a second belt transmission. Second limiting rails 1233 are provided on the front and rear inner sides of the mounting frame 1223. Second limiting blocks 1234 are slidably connected to both ends of the second limiting rails 1233. Two corresponding limiting blocks 1234 on the front and rear sides of the mounting frame 1223 are provided. An end clamping strip 1235 is fixedly connected between the second limit blocks 1234, and the two end clamping strips 1235 are parallel to each other. A second bidirectional threaded rod 1236 is rotatably connected to the inner side of the rear of the installation frame 1223. The two threaded sections of the second bidirectional threaded rod 1236 are respectively threadedly connected to the two second limit blocks 1234. A passive wheel 1237 is fixedly connected to the middle part of the second bidirectional threaded rod 1236. A second adjusting motor 1238 is installed on the outer side of the rear of the installation frame 1223. A driving wheel 1239 is fixedly connected to the output end of the second adjusting motor 1238. The driving wheel 1239 is transmission-connected to the passive wheel 1237 through a third belt.

[0025] The terminal plane motion mechanism 121 is used to fix the terminal and move the terminal to the position directly below the hole of the terminal board to be assembled. The terminal plane motion mechanism 121 is located on the lower inner side of the two vertical baffles 1221. The terminal plane motion mechanism 121 includes an X-direction slide rail 1211, and a first slide seat is slidably connected to the X-direction slide rail 1211. A first linear motor driving the first slide seat to move along the X-direction slide rail 1211 is provided on one side of the X-direction slide rail 1211. A Y-direction slide rail 1212 is fixedly connected to the first slide seat, and a second slide seat is slidably connected to the Y-direction slide rail 1212. A second linear motor driving the second slide seat to move along the Y-direction slide rail 1212 is provided on one side of the Y-direction slide rail 1212. Two relatively arranged positioning cylinders are installed on the upper side of the second slide seat, and the telescopic ends of the two positioning cylinders are fixedly connected to clamps, and a material sensor is also provided on one side of the second slide seat;

[0026] The assembly device is also equipped with a transfer conveyor line, on which a plurality of carriers are placed, and the carriers are used to load the assembled terminal board components. A plurality of loading and unloading machines 13 are installed at one end of the support frame away from the transfer conveyor line, and the loading and unloading machines 13 are used to provide a material box containing terminal board assembly components. A robot slide fixedly connected to the support frame is arranged between the three-axis locking rack 1201 and the loading and unloading machines 13, and a six-axis linkage robot with a gripper is arranged on the robot slide, and the six-axis linkage robot is used to grab assembly parts, and the robot slide is equipped with a drive motor for driving the six-axis linkage robot to move horizontally;

[0027] The assembly device is also equipped with a high-definition vision system, which is used to assist in the assembly of the inverter terminal board.

[0028] As a preferred embodiment of the present embodiment, the loading and unloading machine 13 includes a material box elevator 131 and a profile frame 132 arranged on the outside of the support frame. An electric roller docking platform 133 is installed on the lifting platform of the material box elevator 131. An upper conveyor line 134 and a lower conveyor line 135 are provided on the profile frame 132. When the electric roller docking platform 133 moves to the top, it faces the upper conveyor line 134. When the electric roller docking platform 133 moves to the bottom, it faces the lower conveyor line 135. In the present embodiment, the upper conveyor line 134 and the lower conveyor line 135 are both electric roller conveyor lines.

[0029] The assembly process of the inverter terminal board assembly device of the present invention is as follows:

[0030] First, the material box containing the terminal board assembly parts is placed on the lower conveyor line 135 of the loading and unloading machine 13 through the AGV, and the material box enters the electric roller docking platform 133 through the lower conveyor line 135. Then, the lifting platform and the electric roller docking platform 133 are lifted by the lifting action of the material box elevator 131, so that the material box is moved to the upper part, so that the six-axis linkage robot can grab the parts in the material box. After the parts in the material box are grabbed, the electric roller on the electric roller docking platform 133 rotates in the opposite direction to move the empty material box to the upper conveyor line 134, and then the AGV takes the empty material box from the upper conveyor line 134.

[0031] The terminal board is clamped and fixed using the terminal board positioning mechanism 122, and then the terminal board is grabbed by the six-axis linkage robot. Assuming that the robot's claws clamp the front and rear sides of the terminal board, the claws of the six-axis linkage robot and the grabbed terminal board are extended into the installation frame 1223, and then the second adjustment motor 1238 is started to drive the active wheel 1239 to rotate. The active wheel 1239 drives the second bidirectional threaded rod 1236 on the rear side to rotate through the third belt and the passive wheel 1237. The second limit block 1234 is threadedly connected to the second bidirectional threaded rod 1236. Due to the limiting effect of the second limiting rail 1233, the end clamps 1235 on the left and right sides are relatively close to each other. The terminal board is clamped and fixed on both sides, and then the clamping of the six-axis linkage robot claws on the front and back sides of the terminal board is cancelled, and the six-axis linkage robot claws are moved outward; then the first adjusting motor 1229 is started, and the first adjusting motor 1229 drives the driving wheel 1230 to rotate, and the driving wheel 1230 drives the transmission wheel 1228 to rotate through the first belt, and the transmission wheel 1228 drives the first bidirectional threaded rod 1227 on the left side to rotate synchronously, and the first bidirectional threaded rod 1227 on the left and right sides is connected by the driven wheel 1232 and the second belt transmission, thereby driving the side clamps 1226 on the front and back sides to be relatively close, thereby clamping the front and back sides of the terminal board.

[0032] After the terminal board is clamped, the terminal is placed on the second slide by the six-axis linkage robot, and the terminal is fixed by the positioning cylinder on the second slide. Then, the terminal is moved to the position directly below the hole of the terminal board to be assembled by the terminal plane motion mechanism 121, and then the lifting cylinder 1222 is lowered and retracted, so that the installation frame 1223 and the fixed terminal board are lowered synchronously until the terminal is assembled to the corresponding hole of the terminal board, and then the camera is used to detect whether the terminal and the hole of the terminal board are aligned. After the terminal and the terminal board are aligned, the fourth slide is moved by the three-axis locking rack 1201 (which can move in the XYZ three-axis direction), so that the screw machine on the fourth slide is facing the terminal and the terminal board, and the screw machine is started. The screw feeder is responsible for blowing the screw to the front end of the screw machine, and the vacuum generator generates negative pressure to suck the screw. The intelligent electric screwdriver moves down and rotates through the cylinder to complete the screw locking. The misalignment cylinder is used to misalign the relative position of the camera and the screw machine to avoid interference.

[0033] After the terminal board assembly is assembled, the terminal board positioning mechanism 122 is released, and then the assembled terminal board assembly is placed on the carrier through the six-axis linkage robot. The carrier enters the next unit along the transfer conveyor line for subsequent finished product assembly.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the protection scope of the present invention.

Claims

1. An assembly device for a frequency converter terminal board, characterized in that: It comprises a support frame and a three-axis locking frame (1201) arranged on the support frame, a terminal plate positioning mechanism (122) and a terminal plane movement mechanism (121); the free end of the three-axis locking frame (1201) is fixedly connected to a second mounting plate (1202); the second mounting plate (1202) is provided with a fourth offset cylinder (1203), a fourth guide rail and a camera bracket; the fourth guide rail is slidably connected to a fourth slide mounted with a screw machine; the screw machine is equipped with a screw feeder; the second mounting plate (1202) is provided with a vacuum generator matched with the screw machine; the telescopic end of the fourth offset cylinder (1203) is fixedly connected to the fourth slide; and the camera bracket is equipped with a camera; The terminal board positioning mechanism (122) is used to clamp and fix terminal boards of different sizes; The terminal plane movement mechanism (121) is used to fix the terminal and move the terminal to the position directly below the hole of the terminal board to be assembled; The assembly device is also equipped with a transfer conveyor line, on which a plurality of carriers are placed, and the carriers are used to load assembled terminal board components. A plurality of loading and unloading machines (13) are provided at one end of the support frame away from the transfer conveyor line, and the loading and unloading machines (13) are used to provide a material box containing terminal board assembly components. A robot slide fixedly connected to the support frame is provided between the three-axis locking frame (1201) and the loading and unloading machines (13), and a six-axis linkage robot with a clamping claw is provided on the robot slide, and the robot slide is equipped with a driving motor for driving the six-axis linkage robot to move horizontally; The assembly device is also provided with a high-definition vision system, which is used to assist in the assembly of the inverter terminal board.

2. The assembly device for a frequency converter terminal board according to claim 1, characterized in that: The terminal board positioning mechanism (122) is located on the inner side of the three-axis locking frame (1201), and the terminal board positioning mechanism (122) includes two vertical baffles (1221) fixedly connected to the support frame, and the outer sides of the two vertical baffles (1221) are provided with lifting cylinders (1222), and the telescopic ends of the two lifting cylinders (1222) are fixedly connected to the installation frame (1223) slidably connected to the vertical baffles (1221), and the left and right inner sides of the installation frame (1223) are provided with first limiting rails (1224), and the two ends of the first limiting rails (1224) are slidably connected to the first limiting blocks (1225), and the two first limiting blocks (1225) corresponding to the left and right sides of the installation frame (1223) are provided with first limiting rails (1226). 5), a side clamping strip (1226) is fixedly connected between the two side clamping strips (1226), the two side clamping strips (1226) are parallel to each other, the side clamping strips (1226) and the vertical baffle (1221) are perpendicular to each other, the left and right inner sides of the installation frame (1223) are rotatably connected with a first bidirectional threaded rod (1227), the two threaded sections of a single first bidirectional threaded rod (1227) are respectively threadedly connected to two first limit blocks (1225) on the same side of the installation frame (1223), a transmission wheel (1228) is fixedly connected to the middle part of one of the first bidirectional threaded rods (1227), a first adjusting motor (1229) is provided on the outer side of the installation frame (1223), and the output end of the first adjusting motor (1229) is fixedly connected A driving wheel (1230) is provided, and the driving wheel (1230) is connected to the transmission wheel (1228) through a first belt. A backing plate (1231) that abuts against the vertical baffle (1221) is provided on the front side of the installation frame (1223). The two first bidirectional threaded rods (1227) both penetrate the backing plate (1231) and are fixedly connected to a driven wheel (1232). The two driven wheels (1232) are connected through a second belt transmission. Second limiting rails (1233) are provided on the front and rear inner sides of the installation frame (1223). Both ends of the second limiting rails (1233) are slidably connected to second limiting blocks (1234). The two second limiting blocks (1234) corresponding to the front and rear sides of the installation frame (1223) are connected to the second limiting blocks (1234). An end clamping strip (1235) is fixedly connected between the two end clamping strips (1235), and the two end clamping strips (1235) are parallel to each other. A second bidirectional threaded rod (1236) is rotatably connected to the inner side of the rear of the installation frame (1223). The two threaded sections of the second bidirectional threaded rod (1236) are respectively threadedly connected to the two second limit blocks (1234). A passive wheel (1237) is fixedly connected to the middle part of the second bidirectional threaded rod (1236). A second adjusting motor (1238) is provided on the outer side of the installation frame (1223). A driving wheel (1239) is fixedly connected to the output end of the second adjusting motor (1238). The driving wheel (1239) is transmission-connected to the passive wheel (1237) via a third belt.

3. The assembly device for a frequency converter terminal board according to claim 2, characterized in that: The terminal plane motion mechanism (121) is located at the lower inner side of the two vertical baffles (1221), and the terminal plane motion mechanism (121) comprises an X-direction slide rail (1211), a first slide seat is slidably connected to the X-direction slide rail (1211), a first linear motor for driving the first slide seat to move along the X-direction slide rail (1211) is provided on one side of the X-direction slide rail (1211), a Y-direction slide rail (1212) is fixedly connected to the first slide seat, a second slide seat is slidably connected to the Y-direction slide rail (1212), a second linear motor for driving the second slide seat to move along the Y-direction slide rail (1212) is provided on one side of the Y-direction slide rail (1212), two positioning cylinders arranged opposite to each other are installed on the upper side of the second slide seat, the telescopic ends of the two positioning cylinders are fixedly connected to clamping plates, and a material sensor is also provided on one side of the second slide seat.

4. The assembly device for a frequency converter terminal board according to claim 3, characterized in that: The loading and unloading machine (13) comprises a material box elevator (131) and a profile frame (132) arranged outside a support frame. An electric roller docking platform (133) is arranged on the lifting platform of the material box elevator (131). An upper conveying line (134) and a lower conveying line (135) are arranged on the profile frame (132). When the electric roller docking platform (133) moves to the top, it faces the upper conveying line (134). When the electric roller docking platform (133) moves to the bottom, it faces the lower conveying line (135).

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