Assembly device for frequency converter drive board

Abstract

The invention belongs to the field of frequency converter production and manufacturing, and discloses an assembling device for a frequency converter driving plate, which comprises a support frame, a three-axis locking rack and a driving plate positioning mechanism, and is characterized in that the free end of the three-axis locking rack is connected with a mounting plate; an airplane screw buckling machine, a screw machine and a camera which are subjected to lifting adjustment through three groups of staggered air cylinders are arranged on the mounting plate, the assembling device is further matched with a transfer conveying line, a feeding and discharging machine and a robot sliding table fixedly connected with the supporting frame, and a six-axis linkage robot with a clamping jaw is arranged on the robot sliding table. The assembling device for the frequency converter driving board is high in automation degree, high in assembling efficiency, good in stability, high in applicability and capable of supporting assembling of different types of frequency converter driving 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 drive plate. 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 driver board assembly device for inverter customers to improve the assembly efficiency and quality of the inverter driver board. 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 drive 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 the frequency converter drive board.

[0006] To achieve the above-mentioned purpose, the present invention provides an assembly device for a frequency converter drive plate, comprising a support frame, a three-axis locking rack and a drive plate positioning mechanism arranged on the support frame, the free end of the three-axis locking rack is fixedly connected to a mounting plate, the mounting plate is provided with a first offset cylinder and a first guide rail, a second offset cylinder and a second guide rail, a visual lifting cylinder and a third guide rail, the first guide rail is slidably connected to a first slide on which an aircraft screw machine is installed, the aircraft screw machine is equipped with an aircraft screw feeder, the telescopic end of the first offset cylinder is fixedly connected to the first slide, the second guide rail is slidably connected to a second slide on which a screw machine is installed, the screw machine is equipped with a screw feeder, the telescopic end of the second offset cylinder is fixedly connected to the second slide, the third guide rail is slidably connected to a third slide on which a camera is installed, the telescopic end of the visual lifting cylinder is fixedly connected to the third slide, the mounting plate is also provided with an aircraft buckle pressing cylinder matched with the aircraft screw machine and a vacuum generator matched with the aircraft screw machine and the screw machine;

[0007] The driving plate positioning mechanism is used to limit and fix the driving plate so as to assemble the driving plate;

[0008] 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 drive plate 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 the drive plate 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 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;

[0009] The assembly device is also provided with a high-definition visual system, and the high-definition visual system is used to assist in the assembly of the inverter drive board.

[0010] The cam is an angular channel that is formed on a pair of camshafts, the channel having a first end, a second end, and a second end, wherein the camshafts are connected to the frame by a pair of pins and a pin respectively.

[0011] 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.

[0012] Beneficial effects:

[0013] The assembly device for the frequency converter drive board of the present invention has high automation, high assembly efficiency, good stability, strong applicability, and supports automatic assembly of frequency converter drive boards of different sizes and specifications.

[0014] 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

[0015] Figure 1 It is a structural schematic diagram of an assembly device for a frequency converter drive board of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the driving plate positioning mechanism from the first perspective;

[0017] Figure 3 It is a structural schematic diagram of the driving plate positioning mechanism from a second viewing angle;

[0018] Figure 4 It is a structural schematic diagram of the loading and unloading machine;

[0019] The accompanying drawings are marked as follows: drive plate assembly module 11, three-axis locking frame 1101, mounting plate 1102, first offset cylinder 1103, second offset cylinder 1104, visual lifting cylinder 1105, aircraft screw machine 1106, aircraft screw feeder 1107, screw machine 1108, screw feeder 1109, camera 1110, aircraft buckle pressing cylinder 1111, drive plate positioning mechanism 112, receiving column 1121, receiving plate 1122, first vertical plate 1123, second vertical plate 1124, longitudinal rail 1125, transverse rail 1126, longitudinal seat 1127, limit plate 1128, limit block 1129, external pressure cylinder 1130, loading and unloading machine 13, material box elevator 131, profile frame 132, electric roller docking platform 133, upper conveyor line 134, lower conveyor line 135. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-Figure 4 As shown, the present invention provides an assembly device for a frequency converter drive plate, comprising a support frame, a three-axis locking rack 1101 and a drive plate positioning mechanism 112 arranged on the support frame, the three-axis locking rack 1101 can realize XYZ three-axis movement, the free end of the three-axis locking rack 1101 is fixedly connected with a mounting plate 1102, the mounting plate 1102 is installed with a first offset cylinder 1103 and a first guide rail, a second offset cylinder 1104 and a second guide rail, a visual lifting cylinder 1105 and a third guide rail, the first guide rail is slidably connected with a first slide table installed with an aircraft screw machine 1106, and the aircraft screw machine 1106 is equipped with an aircraft screw supply The feeder 1107, the telescopic end of the first offset cylinder 1103 is fixedly connected to the first slide, the second guide rail is slidably connected to the second slide installed with a screw machine 1108, the screw machine 1108 is equipped with a screw feeder 1109, the telescopic end of the second offset cylinder 1104 is fixedly connected to the second slide, the third guide rail is slidably connected to the third slide installed with a camera 1110, the telescopic end of the visual lifting cylinder 1105 is fixedly connected to the third slide, and the mounting plate 1102 is also equipped with an aircraft pressing cylinder 1111 matched with the aircraft screw machine 1106 and a vacuum generator matched with the aircraft screw machine 1106 and the screw machine 1108;

[0022] The driving plate positioning mechanism 112 is used to limit and fix the driving plate so as to assemble the driving plate. The driving plate positioning mechanism 112 includes four receiving columns 1121 fixedly connected to the support frame. The upper end of the receiving column 1121 is fixedly connected to a receiving plate 1122. The upper outer edge of the receiving plate 1122 is provided with a first vertical plate 1123 and a second vertical plate 1124 perpendicular to each other. The receiving plate 1122 is provided with a longitudinal through groove and a transverse through groove. The lower side of the receiving plate 1122 is fixedly connected to a longitudinal track 1125 and a transverse track 1126. The longitudinal track 1125 is slidably connected to a longitudinal slider. The outer side of the longitudinal slider is fixedly connected to a longitudinal seat 1126. 127, the upper end of the longitudinal seat 1127 extends out of the longitudinal through slot and is fixedly connected with a limit plate 1128 corresponding to the first vertical plate 1123, a horizontal slider is slidably connected to the horizontal track 1126, and a limit block 1129 extending out of the horizontal through slot is fixedly connected to the side of the horizontal slider, and the limit block 1129 is opposite to the second vertical plate 1124, and the longitudinal track 1125 and the horizontal track 1126 are both equipped with an external pressure cylinder 1130, and the telescopic end of the external pressure cylinder 1130 equipped with the longitudinal track 1125 is fixedly connected to the longitudinal seat 1127, and the telescopic end of the external pressure cylinder 1130 equipped with the horizontal track 1126 is fixedly connected to the limit block 1129;

[0023] 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 drive plate 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 the drive plate assembly components. A robot slide fixedly connected to the support frame is arranged between the three-axis locking frame 1101 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 and assemble parts, and the robot slide is equipped with a drive motor for driving the six-axis linkage robot to move horizontally;

[0024] The assembly device is also equipped with a high-definition vision system, which is used to assist in the assembly of the inverter drive board.

[0025] 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.

[0026] The assembly process of the inverter drive board assembly device of the present invention is as follows:

[0027] First, the material box containing the assembly parts of the drive plate components 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.

[0028] Assembly process of the drive plate assembly: the six-axis linkage robot grabs the drive plate and places it on the receiving plate 1122, and then limits and fixes the drive plate. The longitudinally arranged external pressure cylinder 1130 contracts to drive the longitudinal slider to move inward along the longitudinal track 1125, thereby driving the longitudinal seat 1127 and the limit plate 1128 to move toward the first vertical plate 1123, until the limit plate 1128 and the first vertical plate 1123 abut and fix the front and rear sides of the drive plate; the transversely arranged external pressure cylinder 1130 contracts to drive the transverse slider to move inward along the transverse track 1126, thereby driving the limit block 1129 to move toward the second vertical plate 1124, until the limit block 1129 and the second vertical plate 1124 abut and fix the left and right sides of the drive plate.

[0029] After the drive plate is fixed, the parts to be assembled to the drive plate are fastened with buckles or screws. When using buckles to fasten, start the buckle feeder 1107. There are two vibration plates inside the buckle feeder 1107, corresponding to two different buckles. Through the 2-in-1 material distribution mechanism, the required buckles are blown to the buckle screw machine 1106. The vacuum generator generates negative pressure to absorb the blown buckles. After the three-axis locking frame 1101 runs to the buckle locking position on the drive plate, the first offset cylinder 1103 places the buckle at the target position of the drive plate, and at the same time rotates and presses down the smart electric screwdriver of the buckle screw machine 1106, so as to fasten the buckle. The machine buckle is locked to the drive plate; then, the parts to be pressed are placed above the aircraft buckle by a six-axis linkage robot with a clamp, and the visual system (i.e., the camera 1110 installed on the third slide) is used to detect whether the position is correct. After confirmation, the parts to be pressed are pressed into the aircraft buckle slot by the aircraft buckle pressing cylinder 1111; when using screw locking, start the screw machine 1108, and the screw feeder 1109 blows the screws with the correct posture to the front end of the screw machine 1108 through vibration sorting, and the vacuum generator generates negative pressure to absorb the blown screws. The six-axis linkage robot places the parts to be assembled at the corresponding positions of the drive plate. The camera 1110 installed on the third slide detects whether the position is correct. After confirming that it is correct, the screw machine 1108 is moved to the screw locking position through the three-axis locking rack 1101. The second offset cylinder 1104 controls the screw machine 1108 to move down and contact the threaded hole on the drive plate. While the screw machine 1108 is pressed down, the matching intelligent electric screwdriver starts to rotate to lock the drive plate assembly. The camera 1110 installed on the third slide moves the position through the visual lifting cylinder 1105 to ensure that it avoids the interference area when the aircraft is locked, the screw is locked, or the robot is grasping. The aircraft screw machine 1106 and the screw machine 1108 are staggered by the offset cylinders at their upper ends to ensure that they do not interfere with each other during work.

[0030] After the drive plate assembly is assembled, the drive plate positioning mechanism 112 is released to fix it, and then the assembled drive plate 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.

[0031] 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 drive board, characterized in that: The invention comprises a support frame, a three-axis locking frame (1101) and a driving plate positioning mechanism (112) arranged on the support frame, wherein the free end of the three-axis locking frame (1101) is fixedly connected to a mounting plate (1102), the mounting plate (1102) is provided with a first offset cylinder (1103) and a first guide rail, a second offset cylinder (1104) and a second guide rail, a visual lifting cylinder (1105) and a third guide rail, the first guide rail is slidably connected to a first slide table on which an aircraft screw threading machine (1106) is installed, the aircraft screw threading machine (1106) is equipped with an aircraft screw threading feeder (1107), the telescopic end of the first offset cylinder (1103) is connected to the first slide table, and the telescopic end of the first offset cylinder (1103) is connected to the first slide table. The slide is fixedly connected, the second guide rail is slidably connected to a second slide installed with a screw machine (1108), the screw machine (1108) is equipped with a screw feeder (1109), the telescopic end of the second offset cylinder (1104) is fixedly connected to the second slide, the third guide rail is slidably connected to a third slide installed with a camera (1110), the telescopic end of the visual lifting cylinder (1105) is fixedly connected to the third slide, and the mounting plate (1102) is also provided with an aircraft pressing cylinder (1111) matched with the aircraft screw machine (1106) and a vacuum generator matched with the aircraft screw machine (1106) and the screw machine (1108); The drive plate positioning mechanism (112) is used to limit and fix the drive plate so as to facilitate assembly of the drive plate; 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 drive plate 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 the drive plate assembly components. A robot slide fixedly connected to the support frame is provided between the three-axis locking frame (1101) 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 visual system, and the high-definition visual system is used to assist in the assembly of the inverter drive board.

2. The assembly device for a frequency converter drive board according to claim 1, characterized in that: The driving plate positioning mechanism (112) comprises four receiving columns (1121) fixedly connected to the supporting frame, a receiving plate (1122) is provided at the upper end of the receiving column (1121), a first vertical plate (1123) and a second vertical plate (1124) perpendicular to each other are provided at the outer edge of the upper side of the receiving plate (1122), a longitudinal through groove and a transverse through groove are provided on the receiving plate (1122), a longitudinal track (1125) and a transverse track (1126) are provided at the lower side of the receiving plate (1122), a longitudinal slider is slidably connected to the longitudinal track (1125), the longitudinal slider is fixedly connected to a longitudinal seat (1127), the upper end of the longitudinal seat (1127) extends out of the longitudinal groove. The through slot is fixedly connected with a limit plate (1128) corresponding to the first vertical plate (1123); a horizontal slider is slidably connected to the horizontal track (1126); a limit block (1129) extending out of the horizontal through slot is provided on one side of the horizontal slider; the limit block (1129) faces the second vertical plate (1124); the longitudinal track (1125) and the transverse track (1126) are both equipped with an external pressure cylinder (1130); the telescopic end of the external pressure cylinder (1130) equipped with the longitudinal track (1125) is fixedly connected with the longitudinal seat (1127); the telescopic end of the external pressure cylinder (1130) equipped with the transverse track (1126) is fixedly connected with the limit block (1129).

3. The assembly device for a frequency converter drive board according to claim 2, 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).

Images