NTC welding dispensing positioning device

Abstract

The utility model relates to an NTC welding dispensing positioning device, which comprises a dispensing assembly, a monitoring assembly and a patch assembly, dispensing is carried out at a specified position of a module substrate through the dispensing assembly, and then the monitoring assembly monitors whether a glue solution on the module substrate is at a proper position and a proper amount; the module substrate qualified in dispensing is fed into the surface mounting end of the surface mounting assembly, the soldering lug and the NTC thermistor are sequentially attached to the upper portion of the module substrate through the surface mounting assembly, then the module substrate is fed into the vacuum welding equipment to be subjected to vacuum welding, due to the fact that the glue solution has viscidity, deviation or rolling can be avoided in the surface mounting, turnover and welding process, an NTC positioning tool is not needed in the packaging process, and the packaging efficiency is improved. Compared with the prior art, the method has the advantages that the tool is not required to be disassembled after welding, NTC damage caused by tool disassembly does not exist, in the vacuum welding process, glue liquid can be volatilized to ensure that no residue exists at a welding spot, compared with existing solder paste positioning and soldering lug machining positioning, the price is lower, the mounting difficulty is low, the tool does not need to be disassembled after welding, and the situation that the NTC is damaged due to tool disassembly does not exist.

Description

TECHNICAL FIELD

[0001] The utility model belongs to NTC welding technical field, specifically related to a NTC welding point gum positioning device. BACKGROUND

[0002] At present, with the rapid development of new energy technology, power semiconductor demand is thriving. At present, in the field of new energy vehicles, HPD package has IGBT and SIC two types, which internally integrates temperature monitoring element - NTC resistance. Since NTC is fired at high temperature, after forming, it is irregularly similar to the shape of "drum", in the power module packaging process, if NTC is directly attached to the module substrate, it will roll, in order to prevent the attachment, turnover, welding deviation, so it is necessary to take measures to position NTC.

[0003] The traditional NTC positioning mode has tin paste positioning and soldering sheet processing positioning. Tin paste positioning needs to clean the flux, and the cleaning cost is expensive and needs to consider the production environment compliance. Soldering sheet processing positioning increases the difficulty of NTC attachment, and after welding, when the positioning tool is disassembled, NTC is often damaged, which reduces the module packaging yield. In view of this, the present scheme is produced. INVENTION CONTENTS

[0004] In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide an NTC welding point gum positioning device, which can realize the patch positioning between the module substrate, the soldering sheet and the NTC thermistor through the point gum mode.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of an NTC welding point gum positioning device, which comprises a point gum assembly, a monitoring assembly and a patch assembly. The point gum assembly comprises a plurality of point gum bodies and a front and rear driving assembly. The front and rear driving assembly drives the point gum bodies to perform point gum on the surface of the module substrate. The monitoring assembly is used to detect whether the glue on the module substrate meets the requirements. The patch assembly is used to sequentially attach the soldering sheet and the NTC thermistor to the surface of the module substrate.

[0006] Further, the NTC welding point gum positioning device further comprises a transportation assembly, which carries the module substrate through the point gum end of the point gum assembly, the monitoring end of the monitoring assembly and the patch end of the patch assembly.

[0007] Further, the point gum assembly comprises a first mounting frame body and a first camera. A plurality of point gum bodies are installed on the first mounting frame body. The front and rear driving assembly is used to drive the first mounting frame body to move forward and backward. The first camera is installed on the outward side of the first mounting frame body. The shooting end of the first camera is arranged downward.

[0008] Further, the glue dispensing body comprises an extrusion shell and an extrusion screw, the extrusion screw is vertically arranged and rotationally connected in the extrusion shell, the upper end of the extrusion screw extends out of the extrusion shell, a belt pulley is arranged on the peripheral surface of the extrusion screw extending out of the extrusion shell, and the extrusion motor is arranged on the outer side of the first mounting frame body.

[0009] Further, the upper end side wall of the extrusion shell is provided with a feeding port, and the feeding port is provided with a feeding pipe extending upward.

[0010] Further, the patch assembly comprises a second mounting frame body, a plurality of suction disc mounting seats, a plurality of up-down driving cylinder bodies, a patch left-right driving assembly and a patch front-rear driving assembly, the output ends of the plurality of up-down driving cylinder bodies are fixedly connected with the upper surfaces of the plurality of suction disc mounting seats respectively, the plurality of up-down driving cylinder bodies are arranged on the second mounting frame body at intervals, the lower surfaces of the plurality of suction disc mounting seats are provided with suction discs, the patch left-right driving assembly is used for driving the second mounting frame body to move left and right, and the patch front-rear driving assembly is used for driving the patch left-right driving assembly and the second mounting frame body to move forward and backward.

[0011] Further, the patch assembly further comprises a feeding conveying belt, and the feeding conveying belt is located between the moving ranges of the patch front-rear driving assembly.

[0012] Further, the monitoring assembly is located between the glue dispensing assembly and the patch assembly, and the monitoring assembly comprises a second camera.

[0013] Compared with the prior art, the NTC welding glue dispensing positioning device has the following beneficial effects:

[0014] In the utility model, the glue dispensing assembly dispenses glue at the specified position of the module substrate, then the monitoring assembly monitors whether the glue on the module substrate is in the appropriate position and appropriate amount, the module substrate with qualified glue dispensing is sent to the patching end of the patch assembly, the patch assembly sequentially patches the soldering sheet and the NTC thermistor onto the module substrate, and then the module substrate is sent into the vacuum welding equipment to be welded, since the glue has viscosity, deviation or rolling during the patching, turnover and welding can be avoided, the packaging process does not need NTC positioning tooling, and the NTC is not damaged due to disassembly of the tooling, in the vacuum welding process, the glue volatilizes to ensure that there is no residue at the welding point, compared with the existing tin paste positioning and soldering sheet processing positioning, the price is cheaper and the patching difficulty is low, and after welding, the tooling does not need to be disassembled, and the NTC is not damaged due to disassembly of the tooling. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the NTC welding glue dispensing positioning device;

[0016] Figure 2 It is the schematic diagram of the three-dimensional structure of the point gluing assembly in the utility model;

[0017] Figure 3 It is the schematic diagram of the three-dimensional structure of the first mounting frame body and the point gluing body in the utility model;

[0018] Figure 4 It is the schematic diagram of the three-dimensional structure of the point gluing body in the utility model;

[0019] Figure 5 It is the schematic diagram of the three-dimensional structure of the patch assembly in the utility model;

[0020] Figure 6 It is the schematic diagram of the three-dimensional structure of the second mounting frame body and the suction disc mounting seat in the utility model.

[0021] Marked in the figure: 1, transport assembly; 11, moving plate; 12, slide rail; 2, point gluing assembly; 21, point gluing body; 211, extrusion shell; 2111, extrusion head; 2112, feed inlet; 212, extrusion screw; 2121, belt pulley; 2122, extrusion motor; 22, first gantry; 23, first mounting frame body; 24, first camera; 25, point gluing left and right moving frame; 3, monitoring assembly; 4, patch assembly; 41, feed conveyor belt; 42, second mounting frame body; 43, suction disc mounting seat; 431, suction disc; 44, up and down driving cylinder body; 45, patch left and right moving frame; 46, second gantry. DETAILED DESCRIPTION

[0022] In order to make the above features and advantages of the utility model more obvious and easy to understand, the following specific examples are taken, and the detailed description is as follows in cooperation with the drawings.

[0023] As Figures 1-6 shown, the embodiment provides a NTC welding point gluing positioning device, including transport assembly 1, point gluing assembly 2, monitoring assembly 3 and patch assembly 4.

[0024] Transport assembly 1 carries module substrate through the point gluing end of point gluing assembly 2, the monitoring end of monitoring assembly 3 and the patch end of patch assembly 4, and transport assembly 1 can adopt the mode that conveying belt or moving plate 11 moves in cooperation with slide rail 12, in the scheme, transport assembly 1 adopts multiple continuous moving plates 11, slide rail 12 is laid under moving plate 11, slide block and convex seat are arranged under moving plate 11, the slide block is matched with slide rail 12, the screw hole is formed on the convex seat, the screw rod passes through the screw hole of the convex seat, multiple moving plates 11 are moved by the screw rod rotation, and the reason for adopting the screw rod is that the position accuracy requirement of point gluing and patch in the scheme is higher, so the screw rod driving mode is the best.

[0025] The dispensing assembly 2 comprises a plurality of dispensing bodies 21, a front and rear dispensing driving assembly, a first mounting rack body 23 and a first camera 24. The glue liquid extruded by the dispensing body 21 is adhesive glue, which will completely volatilize under the condition of 250 degrees Celsius. Specifically, the plurality of dispensing bodies 21 are spaced apart and mounted on the first mounting rack body 23, the first camera 24 is mounted on the outward side of the first mounting rack body 23, the shooting end of the first camera 24 is arranged downward, and the first camera 24 is used to judge whether the module substrate is moved to the position. The dispensing body 21 comprises an extrusion shell 211 and an extrusion screw, and the lower end of the extrusion shell 211 is provided with an extrusion head 2111; the sidewall of the upper end of the extrusion shell 211 is provided with a feeding port 2112, the feeding port 2112 is provided with a feeding pipe extending upward, the extrusion screw is vertically arranged and rotationally connected in the extrusion shell 211, the upper end of the extrusion screw 212 extends out of the extrusion shell 211, the peripheral surface of the extrusion screw extending out of the extrusion shell 211 is provided with a belt pulley 2121, the outer side of the first mounting rack body 23 is provided with an extrusion motor 2122, and the output end of the extrusion motor 2122 and the belt pulley 2121 are driven by a belt. Because too much adhesive glue will affect the welding quality, in order to make the dispensing diameter of the adhesive glue meet the process requirements, the extrusion screw is used in the dispensing body 21 to accurately control the glue amount.

[0026] The front and rear dispensing driving assembly is used to drive the first mounting rack body 23 to move forward and backward. Specifically, the front and rear dispensing driving assembly comprises two first gantry frames 22 and a dispensing driving screw, the two first gantry frames 22 are spaced apart and span the conveying assembly 1, the upper surface of one of the first gantry frames 22 is provided with a first guide rail, and the other first gantry frame 22 is provided with a dispensing driving screw, the first mounting rack body 23 is connected to the first moving seat, the two sides of the first moving seat are respectively provided with a first sliding block matched with the first guide rail and a first matching protrusion, a threaded hole is formed in the first matching protrusion, and the threaded hole in the first matching protrusion is matched with the dispensing driving screw.

[0027] In another embodiment, the dispensing assembly 2 further comprises a dispensing left-right driving assembly. The dispensing left-right driving assembly comprises a dispensing left-right moving frame 25. The first mounting frame body 23 is slidingly connected to the surface of the dispensing left-right moving frame 25 in a way of rail fitting and screw rod driving. The dispensing left-right moving frame 25 is provided with a first sliding block and a first fitting protrusion on each side, which are adapted to the first guide rail. The first fitting protrusion is provided with a threaded hole. The threaded hole of the first fitting protrusion is adapted to the dispensing front-back driving screw rod. The dispensing left-right driving assembly is used to replace the first moving seat, so that the dispensing body 21 can move forward and backward for dispensing and can be adjusted left and right. The dispensing left-right driving assembly is used to identify the position of the module substrate carried on the conveying assembly 1 through the first camera 24. If the position of the module substrate carried on the conveying assembly 1 is not corresponding (deviation when placed), the conveying assembly 1 cannot be retreated. The dispensing left-right driving assembly drives the dispensing body 21 to move left to compensate the stroke, so as to ensure the accuracy of dispensing.

[0028] The patch assembly 4 is used to sequentially attach the soldering sheet and the NTC thermistor to the surface of the module substrate. Specifically, the patch assembly 4 comprises a feeding conveyor belt 41, a second mounting frame body 42, a plurality of suction cup mounting seats 43, a plurality of up-down driving cylinder bodies 44, a patch left-right driving assembly, and a patch front-back driving assembly. Specifically, the output ends of the plurality of up-down driving cylinder bodies 44 are fixedly connected to the upper surfaces of the plurality of suction cup mounting seats 43. The plurality of up-down driving cylinder bodies 44 are installed on the second mounting frame body 42 at intervals. The lower surfaces of the plurality of suction cup mounting seats 43 are provided with suction cups 431. In this embodiment, the number of up-down driving cylinder bodies 44 is six, but only three of them are provided with suction cup mounting seats 43. Six up-down driving cylinder bodies 44 are provided to adapt to different specifications of the module substrate. The patch left-right driving assembly is used to drive the second mounting frame body 42 to move left and right. Specifically, the patch left-right driving assembly comprises a patch left-right moving frame 45. The second mounting frame body 42 is slidingly connected to the surface of the patch left-right moving frame 45 in a way of rail fitting and screw rod driving. The patch front-back driving assembly is used to drive the patch left-right driving assembly and the second mounting frame body 42 to move forward and backward. Specifically, the patch front-back driving assembly comprises two second gantry frames 46 and a patch front-back driving screw rod. The two second gantry frames 46 are arranged at intervals and span the conveying assembly. The upper surface of one of the second gantry frames 46 is provided with a second guide rail. The other second gantry frame 46 is provided with the patch front-back driving screw rod. The two sides of the patch left-right moving frame 45 are respectively provided with a second sliding block and a second fitting protrusion, which are adapted to the second guide rail. The second fitting protrusion is provided with a threaded hole. The threaded hole of the second fitting protrusion is adapted to the patch front-back driving screw rod. The feeding conveyor belt 41 is located between the two second gantry frames 46.

[0029] The monitoring assembly 3 is located between the dispensing assembly 2 and the patching assembly 4, and the monitoring assembly 3 comprises a second camera for detecting whether the glue liquid on the module substrate meets the requirements.

[0030] In the scheme, the dispensing assembly 2 dispenses glue liquid at the designated position of the module substrate, then the monitoring assembly 3 monitors whether the glue liquid on the module substrate is in the appropriate position and appropriate amount, the module substrate with qualified dispensing is sent to the patching end of the patching assembly 4, the patching assembly 4 sequentially patches the soldering sheet and the NTC thermistor onto the module substrate, and then the module substrate is sent into the vacuum welding device for vacuum welding. Since the glue liquid has viscosity, the offset or rolling during the patching, turnover and welding can be avoided, the packaging process does not need NTC positioning tooling, and there is no NTC damage caused by disassembly tooling. In the vacuum welding process, the glue liquid volatilizes to ensure that there is no residue at the welding point. Compared with the existing tin paste positioning and soldering sheet processing positioning, the price is cheaper and the patching difficulty is low, and after welding, there is no need to disassemble the tooling, and there is no NTC damage caused by disassembly tooling.

[0031] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An NTC solder point glue positioning device, characterized in that: The device comprises a dispensing assembly, a monitoring assembly and a patch assembly, the dispensing assembly comprises a plurality of dispensing bodies and a dispensing front and rear driving assembly, the dispensing front and rear driving assembly drives the dispensing bodies to dispense on the surface of a module substrate, the monitoring assembly is used to detect whether the glue on the module substrate meets the requirements, and the patch assembly is used to sequentially patch the soldering piece and NTC thermistor to the surface of the module substrate; the NTC soldering dispensing positioning device further comprises a conveying assembly, the conveying assembly carries the module substrate through the dispensing end of the dispensing assembly, the monitoring end of the monitoring assembly and the patch end of the patch assembly; the dispensing assembly comprises a first mounting frame body and a first camera, a plurality of dispensing bodies are spaced apart and mounted on the first mounting frame body, the dispensing front and rear driving assembly is used to drive the first mounting frame body to move forward and backward, and the first camera is mounted on the outward side of the first mounting frame body, and the shooting end of the first camera is arranged downward. The patch assembly comprises a second mounting frame body, a plurality of suction cup mounting seats, a plurality of up and down driving cylinder bodies, a patch left and right driving assembly and a patch front and rear driving assembly, the output ends of the plurality of up and down driving cylinder bodies are fixedly connected with the upper surfaces of the plurality of suction cup mounting seats, the plurality of up and down driving cylinder bodies are spaced apart and mounted on the second mounting frame body, the lower surfaces of the plurality of suction cup mounting seats are provided with suction cups, the patch left and right driving assembly is used to drive the second mounting frame body to move left and right, and the patch front and rear driving assembly is used to drive the patch left and right driving assembly and the second mounting frame body to move forward and backward.

2. The NTC solder point gluing positioning device according to claim 1, characterized in that: The dispensing body comprises an extrusion shell and an extrusion screw, the extrusion screw is vertically arranged and rotationally connected in the extrusion shell, the upper end of the extrusion screw extends out of the extrusion shell, the peripheral surface of the extrusion screw extending out of the extrusion shell is provided with a belt pulley, the outer side of the first mounting frame body is provided with an extrusion motor, and the output end of the extrusion motor and the belt pulley are transmission-connected through a belt.

3. The NTC solder point glue positioning device according to claim 2, characterized in that: The upper end side wall of the extrusion shell is provided with a feeding port, and the feeding port is provided with a feeding pipe extending upward.

4. The NTC solder point glue positioning device according to claim 1, wherein: The patch assembly further comprises a feeding conveyor belt, and the feeding conveyor belt is located between the moving ranges of the patch front and rear driving assembly.

5. The NTC solder point glue positioning device according to claim 1, characterized in that: The monitoring assembly is located between the dispensing assembly and the patch assembly, and the monitoring assembly comprises a second camera.

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