Rotatable PCB welding device

Abstract

The invention discloses a rotatable PCB welding device, and relates to the technical field of PCB preparation equipment, the rotatable PCB welding device comprises a PCB, the bottom of the PCB is provided with a steering mechanism, the steering mechanism comprises a bottom plate placed on the top of a welding table, the top of the bottom plate is rotatably provided with a rotating table, the middle of the rotating table is rotatably provided with a lower frame component, and the bottom of the rotating table is provided with an upper frame component. An upper frame component is rotationally mounted at the top of the lower frame component; an auxiliary mechanism is arranged in the steering mechanism and comprises frame rod pieces symmetrically fixed to the two ends of the rotating table, a set of first-class tooth grooves are symmetrically formed in the outer side of the lower frame component and the outer side of the upper frame component, and a set of second-class tooth grooves are symmetrically formed in the tops of the frame rod pieces; and the auxiliary mechanism is matched with the rotation of the steering mechanism so as to turn over and turn the PCB and assist in soldering elements. The rotatable PCB welding device disclosed by the invention has the effects of multiple functions and high operation convenience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of PCB preparation equipment, in particular to a rotatable PCB welding device. BACKGROUND

[0002] PCB, which is short for printed circuit board, is one of the important components in the electronic industry. It is composed of an insulating base plate, connecting wires and solder pads for assembling electronic components. It has the dual functions of conducting electricity and insulating the base plate. It can replace complex wiring to achieve electrical connections between components in the circuit. This not only simplifies the assembly and soldering of electronic products, reduces the amount of wiring work in traditional ways, and greatly reduces the labor intensity of workers, but also reduces the size of the whole machine, lowers the cost of products, and improves the quality and reliability of electronic equipment.

[0003] In existing PCB industrial production, manual soldering is still used for small components. However, the pin soldering points of different components may differ. For example, the soldering points of a surface mount resistor are located on both sides, while the soldering points of a relay module are located on the back of the PCB. In this case, workers need to adaptively flip the PCB, while the worker's station remains stationary. This repeated process makes the PCB soldering process cumbersome and inconvenient. Moreover, when soldering small components, the traditional visual observation method can affect the accuracy of the soldering points, and the work perfection needs to be improved. SUMMARY

[0004] The present application discloses a rotatable PCB welding device, aiming to solve the technical problem that in existing PCB industrial production, manual soldering requires workers to repeatedly flip the PCB when soldering different points on the PCB, making the soldering process cumbersome and inconvenient, and the work perfection needs to be improved.

[0005] To achieve the above purpose, the present application adopts the following technical scheme: A rotatable PCB welding device includes a PCB. The bottom of the PCB is provided with a steering mechanism for steering control of the PCB. The steering mechanism includes a bottom plate placed on the top of a welding table. A rotating table is rotatably installed on the top of the bottom plate. A lower frame member is rotatably installed in the middle of the rotating table. An upper frame member is rotatably installed on the top of the lower frame member. An auxiliary mechanism is provided inside the steering mechanism to assist workers in soldering components on the PCB. The auxiliary mechanism includes a bracket rod symmetrically fixed to both ends of the rotating table. The bracket rod is placed on the bottom of the lower frame member and the upper frame member. A group of first type tooth grooves are symmetrically opened on the outside of the lower frame member and the upper frame member. A group of second type tooth grooves are symmetrically opened on the top of the bracket rod. The auxiliary mechanism cooperates with the rotation of the steering mechanism to overturn, change direction and assist in soldering elements of the PCB.

[0006] On the basis of the traditional PCB element welding method, a steering mechanism is arranged on the top of the welding table. First, the steering mechanism is used to fix and clamp the PCB. Then, the steering mechanism is adjusted according to the welding angle to drive the PCB to rotate. In addition, an auxiliary mechanism is arranged on the top of the steering mechanism. When the worker welds the PCB, the auxiliary mechanism is used to assist in positioning the elements that need to be welded, thereby greatly improving the convenience and functionality of the traditional PCB welding method.

[0007] In a preferred scheme, the lower frame member and the upper frame member are magnetically attracted and clamped, and the abutting surfaces of the lower frame member and the upper frame member are symmetrically provided with mounting grooves. The PCB is clamped and mounted between the lower frame member and the upper frame member through the mounting grooves.

[0008] On the basis of the traditional PCB element welding method, a rotating table structure is arranged on the top of the welding table and is rotatably mounted on the top of the bottom plate. The top of the rotating table is additionally provided with a lower frame member and an upper frame member that are rotatably connected to each other. First, the PCB is clamped and fixed by the lower frame member and the upper frame member. Then, the lower frame member and the upper frame member are rotated around the rotating table, and the rotating table is rotated around the bottom plate. In this way, the clamping and fixing of the PCB, the horizontal angle adjustment, and the vertical angle adjustment are realized in sequence, thereby greatly improving the convenience of the traditional PCB welding method.

[0009] In a preferred scheme, a type of positioning mold is clamped and fixed on the outside of a type of tooth groove, and the type of positioning mold is abutted to the top of the PCB. A type of positioning mold is clamped and fixed on the outside of a type of tooth groove, and the type of positioning mold is abutted to the bottom of the PCB.

[0010] By additionally arranging a bracket member structure on both ends of the rotating table, a type of tooth groove and a type of tooth groove are used to cooperate with a type of positioning mold and a type of positioning mold. In this way, when the worker welds the PCB, the positioning, abutment and guidance of the mold can assist the worker in welding elements with different pins and different welding points, such as surface mount resistors with welding points on both sides and relay modules with welding points on the back of the PCB. In this way, the functionality and convenience of the device during operation are greatly improved.

[0011] In a preferred scheme, the top of the PCB board is symmetrically provided with a plurality of groups of conductive copper sheets, and the subsequently welded chip resistors are distributed between each group of the conductive copper sheets, the inside of the one type of positioning mold is vertically provided with a plurality of reserved notches, the inside of the reserved notches is placed with a chip resistor, and the two ends of each one type of positioning mold are vertically provided with welding notches.

[0012] By arranging the reserved notches and the welding notches symmetrically on the top of the one type of positioning mold, the conductive copper sheets of the PCB board are positioned by the welding notches, and the chip resistors are positioned and placed by the reserved notches, so that the convenience of the workers in welding the chip resistors is greatly improved.

[0013] As can be seen from the above, the rotatable PCB board welding device has the following technical effects.

[0014] Firstly, the top of the welding table is provided with a rotating table structure rotatably installed on the top of the bottom plate based on the traditional PCB board welding element mode, the top of the rotating table is additionally provided with a lower frame member and an upper frame member rotatably connected with each other, the PCB board is first clamped and fixed by the lower frame member and the upper frame member, and then the PCB board is clamped and fixed, horizontally adjusted and longitudinally adjusted in sequence by rotating the lower frame member and the upper frame member around the rotating table and rotating the rotating table around the bottom plate, so that the convenience of the traditional PCB board welding mode in operation is greatly improved.

[0015] Secondly, the two ends of the rotating table are further provided with a bracket rod structure, a first type of positioning mold and a second type of positioning mold are used in cooperation with a first type of tooth groove and a second type of tooth groove, so that when the workers weld the PCB board, the workers are assisted in welding elements with different pins and different welding points by the positioning, supporting and guiding of the molds, for example, the top of the first type of positioning mold is provided with a reserved notch and a welding notch symmetrically arranged, the conductive copper sheets of the PCB board are positioned by the welding notch, and the chip resistors are positioned and placed by the reserved notch, so that the operation of the workers in welding the chip resistors is greatly facilitated, and the functionality and the convenience in operation of the device are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure diagram of the present application is shown.

[0017] Figure 2 The overall structure explosion diagram of the present application is shown.

[0018] Figure 3 The upper frame member flip state diagram of the present application is shown.

[0019] Figure 4 The schematic diagram of the state of the PCB after installation according to the present application.

[0020] Figure 5 The schematic diagram of the state of the PCB after turning over according to the present application.

[0021] Figure 6 The schematic diagram of the second operating state of the device according to the present application.

[0022] Figure 7 The schematic diagram of the structure of the PCB according to the present application.

[0023] Figure 8 The schematic diagram of the structure of the PCB according to the present application.

[0024] Figure 9 The schematic diagram of the structure of the mold according to the present application.

[0025] In the figure: 1, PCB; 101, conductive copper sheet; 2, turning mechanism; 201, bottom plate; 2011, threaded groove; 202, rotating table; 203, lower frame component; 2031, damping piece; 204, upper frame component; 205, mounting groove; 3, auxiliary mechanism; 301, frame rod piece; 302, type 1 tooth groove; 303, type 2 tooth groove; 304, type 1 positioning mold; 3041, reserved notch; 3042, welding notch; 305, type 2 positioning mold; 3051, bottom supporting groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0027] The rotatable PCB welding device disclosed by the present application is mainly applied to the scene of angle adjustment and element welding of a PCB.

[0028] REFERENCE Figures 1 to 9 A rotatable PCB welding device, comprising a PCB 1, the bottom of the PCB 1 is provided with a turning mechanism 2 for turning control of the PCB 1, the turning mechanism 2 comprises a bottom plate 201 placed on the top of a welding table, the top of the bottom plate 201 is rotatably installed with a rotating table 202, the middle of the rotating table 202 is rotatably installed with a lower frame component 203, the top of the lower frame component 203 is rotatably installed with an upper frame component 204; The inside of the turning mechanism 2 is provided with an auxiliary mechanism 3 for assisting workers in soldering components on the PCB board 1, the auxiliary mechanism 3 comprises a bracket rod 301 fixed symmetrically at both ends of the rotating table 202, the bracket rod 301 is placed on the bottom of the lower frame member 203 and the upper frame member 204, a group of tooth grooves 302 of type I are symmetrically arranged on the outer side of the lower frame member 203 and the upper frame member 204, a group of tooth grooves 303 of type II are symmetrically arranged on the top of the bracket rod 301; The auxiliary mechanism 3 is used in cooperation with the rotation of the turning mechanism 2 to turn, change direction and assist in soldering components on the PCB board 1.

[0029] In the embodiment: the worker sits at the work station in front of the soldering table, and at the same time, the auxiliary mechanism 3 is assembled to the outside of the turning mechanism 2, then the turning mechanism 2 is opened, the PCB board 1 to be soldered is clamped and fixed inside the turning mechanism 2, and at the same time, the worker holds the soldering tin with one hand and the soldering gun with the other hand, aligns the soldering tin with the surface of the PCB board 1, melts the soldering tin with the soldering gun and spot-welds the components placed on the surface of the PCB board 1; taking the surface-mounted resistor with the welding point on both sides as an example, at this time, the worker directly solder the two ends of the surface-mounted resistor by using the positioning of the auxiliary mechanism 3; taking the relay module with the welding point on the back of the PCB board 1 as an example, at this time, the worker needs to turn over the turning mechanism 2 with his hand, so that the turning mechanism 2 drives the PCB board 1 to turn over, exposes the bottom of the PCB board 1, and makes the pins of the relay module upward, at this time, the worker can solder the pins of the relay module.

[0030] The top of the bottom plate 201 is vertically provided with a plurality of threaded grooves 2011, the worker screws the bottom plate 201 to the top of the soldering table through the threaded grooves 2011, and the rotating connection between the lower frame member 203 and the rotating table 202 is provided with a damping member 2031, which improves the damping feeling when the worker rotates the lower frame member 203.

[0031] Reference Figures 1 to 6 In a preferred embodiment, the lower frame member 203 and the upper frame member 204 are magnetically attracted and clamped, the abutting surfaces of the lower frame member 203 and the upper frame member 204 are symmetrically provided with mounting grooves 205, and the PCB board 1 is clamped and mounted between the lower frame member 203 and the upper frame member 204 through the mounting grooves 205.

[0032] The worker sits at the work station in front of the welding table, at the same time, the auxiliary mechanism 3 is assembled to the outer side of the steering mechanism 2, then the upper frame member 204 is manually pushed to make the upper frame member 204 rotate around the lower frame member 203, then the worker places the PCB board 1 to be welded inside the mounting groove 205, and rotates the upper frame member 204 to make the upper frame member 204 and the lower frame member 203 rotate to clamp and fix the outer side of the PCB board 1, then the worker holds the soldering tin with one hand and the soldering gun with the other hand, aligns the soldering tin with the surface of the PCB board 1, melts the soldering tin by the soldering gun, and spot-welds the elements placed on the surface of the PCB board 1; taking the surface-mounted resistor with welding points on both sides as an example, at this time, the worker directly welds the two ends of the surface-mounted resistor by using the positioning of the auxiliary mechanism 3, and taking the relay module with welding points on the back of the PCB board 1 as an example, at this time, the worker needs to turn over the upper frame member 204 and the lower frame member 203 by hand to make the upper frame member 204 and the lower frame member 203 turn over the PCB board 1 to expose the bottom of the PCB board 1, and the specific state is shown in Figure 5 , so that the pins of the relay module are upward, at this time, the worker can weld the pins of the relay module; and in actual operation of the device, the worker can turn over the upper frame member 204 to make the upper frame member 204 rotate around the lower frame member 203 and horizontally distribute with the lower frame member 203, at this time, the worker can place two PCB boards 1 in the mounting grooves 205 inside the upper frame member 204 and the lower frame member 203 respectively, and then simultaneously weld the two PCB boards 1, and the specific state is shown in Figure 6 .

[0033] Referring to Figures 1 to 6 , Figure 9 , in a preferred embodiment, the outer side of a type of tooth groove 302 is clamped and fixed with a type of positioning mold 304, the type of positioning mold 304 is attached to the top of the PCB board 1, the outer side of a type of tooth groove 303 is clamped and fixed with a type of positioning mold 305, and the type of positioning mold 305 is supported on the bottom of the PCB board 1.

[0034] The worker sits at the work station in front of the welding table, at the same time, the auxiliary mechanism 3 is assembled to the outer side of the steering mechanism 2, then the upper frame member 204 is manually pushed to make the upper frame member 204 rotate around the lower frame member 203, then the worker places the PCB board 1 to be welded inside the mounting groove 205, and rotates the upper frame member 204 to make the upper frame member 204 and the lower frame member 203 rotate to clamp and fix the outer side of the PCB board 1, then the worker holds the soldering tin with one hand and the soldering gun with the other hand, aligns the soldering tin with the surface of the PCB board 1, melts the soldering tin by the soldering gun, and spot-welds the elements placed on the surface of the PCB board 1; taking the surface-mounted resistor with welding points on both sides as an example, at this time, the worker directly welds the two ends of the surface-mounted resistor by using the positioning of the auxiliary mechanism 3, and taking the relay module with welding points on the back of the PCB board 1 as an example, at this time, the worker needs to turn over the upper frame member 204 and the lower frame member 203 by hand to make the upper frame member 204 and the lower frame member 203 turn over the PCB board 1 to expose the bottom of the PCB board 1, and the specific state is shown in Figure 5 , so that the pins of the relay module are upward, at this time, the worker can weld the pins of the relay module; and in actual operation of the device, the worker can turn over the upper frame member 204 to make the upper frame member 204 rotate around the lower frame member 203 and horizontally distribute with the lower frame member 203, at this time, the worker can place two PCB boards 1 in the mounting grooves 205 inside the upper frame member 204 and the lower frame member 203 respectively, and then simultaneously weld the two PCB boards 1, and the specific state is shown in Figure 6 .

[0033] Referring to Figures 1 to 6 , Figure 9 , in a preferred embodiment, the outer side of a type of tooth groove 302 is clamped and fixed with a type of positioning mold 304, the type of positioning mold 304 is attached to the top of the PCB board 1, the outer side of a type of tooth groove 303 is clamped and fixed with a type of positioning mold 305, and the type of positioning mold 305 is supported on the bottom of the PCB board 1.

[0034] The worker sits at the work station in front of the welding table, at the same time, the auxiliary mechanism 3 is assembled to the outer side of the steering mechanism 2, then the upper frame member 204 is manually pushed to make the upper frame member 204 rotate around the lower frame member 203, then the worker places the PCB board 1 to be welded inside the mounting groove 205, and rotates the upper frame member 204 to make the upper frame member 204 and the lower frame member 203 rotate to clamp and fix the outer side of the PCB board 1, then the worker holds the soldering tin with one hand and the soldering gun with the other hand, aligns the soldering tin with the surface of the PCB board 1, melts the soldering tin by the soldering gun, and spot-welds the elements placed on the surface of the PCB board 1; taking the surface-mounted resistor with welding points on both sides as an example, at this time, the worker directly welds the two ends of the surface-mounted resistor by using the positioning of the auxiliary mechanism 3, and taking the relay module with welding points on the back of the PCB board 1 as an example, at this time, the worker needs to turn over the upper frame member 204 and the lower frame member 203 by hand to make the upper frame member 204 and the lower frame member 203 turn over the PCB board 1 to expose the bottom of the PCB board 1, and the specific state is shown in Figure 5 , so that the pins of the relay module are upward, at this time, the worker can weld the pins of the relay module; and in actual operation of the device, the worker can turn over the upper frame member 204 to make the upper frame member 204 rotate around the lower frame member 203 and horizontally distribute with the lower frame member 203, at this time, the worker can place two PCB boards 1 in the mounting grooves 205 inside the upper frame member 204 and the lower frame member 203 respectively, and then simultaneously weld the two PCB boards 1, and the specific state is shown in Figure 6 .

[0033] Referring to Figures 1 to 6 , Figure 9 , in a preferred embodiment, the outer side of a type of tooth groove 302 is clamped and fixed with a type of positioning mold 304, the type of positioning mold 304 is attached to the top of the PCB board 1, the outer side of a type of tooth groove 303 is clamped and fixed with a type of positioning mold 305, and the type of positioning mold 305 is supported on the bottom of the PCB board 1.

[0035] With reference to Figures 7 to 9 In a preferred embodiment, the top of the PCB board 1 is symmetrically provided with a plurality of groups of conductive copper sheets 101, and the subsequently soldered chip resistors are distributed between each group of conductive copper sheets 101. The inside of each first positioning mold 304 is vertically provided with a plurality of reserved notches 3041, and the chip resistors are placed in the reserved notches 3041. The two ends of each first positioning mold 304 are both provided with soldering notches 3042, and the soldering notches 3042 are vertically distributed on the top of the conductive copper sheets 101.

[0036] Before soldering the chip resistors, as the upper frame member 204 is clamped on the top of the lower frame member 203, the first positioning mold 304 on the upper frame member 204 is simultaneously fitted on the upper surface of the PCB board 1. At this time, the soldering notches 3042 are vertically distributed on the top of the conductive copper sheets 101, and the workers can place a plurality of chip resistors in the reserved notches 3041 in advance. The workers can directly point weld the soldering tin in the inside of the soldering notches 3042, and the two end circuits of the soldered chip resistors are directly connected with the conductive copper sheets 101.

[0037] Among them, the first positioning mold 304 and the second positioning mold 305 are both composed of alumina ceramic material which does not stick to soldering tin, so as to prevent the molten soldering tin from sticking to the first positioning mold 304 and the second positioning mold 305 when the workers use the first positioning mold 304 and the second positioning mold 305 to assist in soldering.

[0038] Specifically, the inside of the second positioning mold 305 is provided with a plurality of bottom supporting grooves 3051, and the bottom supporting grooves 3051 are distributed on the bottom of the PCB board 1. The bottom supporting grooves 3051 are used to support the relay module fixed on the outer side of the PCB board 1, so as to improve the stability during soldering.

[0039] Working principle: in use, the worker sits on the workbench in front of the work position, while the first positioning mold 304 is clamped into the first tooth groove 302 corresponding to the lower frame member 203 and the upper frame member 204, and the second positioning mold 305 is clamped into the second tooth groove 303 corresponding to the frame rod 301. Then the worker turns the upper frame member 204 by hand, so that the upper frame member 204 rotates around the lower frame member 203. Then the worker places the PCB board 1 to be welded in the mounting groove 205, and turns the upper frame member 204, so that the upper frame member 204 and the lower frame member 203 rotate to clamp and fix the outer side of the PCB board 1. Then the worker holds the solder with one hand and the welding gun with the other hand, aligns the solder with the surface of the PCB board 1, melts the solder with the welding gun, and spot welds the components placed on the surface of the PCB board 1. Taking the surface-mounted resistor with the welding point on both sides as an example, the welding slot 3042 of the first positioning mold 304 is vertically distributed on the top of the conductive copper sheet 101, and the worker can place a plurality of surface-mounted resistors in the reserved slot 3041 in advance. The worker can directly spot weld the solder in the welding slot 3042, and the two end circuits of the soldered surface-mounted resistor are directly connected to the conductive copper sheet 101. Taking the relay module with the welding point on the back of the PCB board 1 as an example, the worker needs to turn over the upper frame member 204 and the lower frame member 203 by hand, so that the upper frame member 204 and the lower frame member 203 turn over the PCB board 1, exposing the bottom of the PCB board 1, as shown in Figure 5 the specific state, so that the pins of the relay module are upward, and the worker can solder the pins of the relay module. When the device is actually running, the worker can turn over the upper frame member 204, so that the upper frame member 204 rotates around the lower frame member 203 and is horizontally distributed with the lower frame member 203. At this time, the worker can place two PCB boards 1 in the mounting grooves 205 in the upper frame member 204 and the lower frame member 203 respectively, and then simultaneously weld the two PCB boards 1, improving the efficiency.

[0040] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A rotatable PCB soldering device comprising a PCB board (1), characterized in that, The bottom of the PCB board (1) is provided with a steering mechanism (2) for steering control of the PCB board (1), the steering mechanism (2) comprises a bottom plate (201) placed on the top of the welding table, a rotating table (202) is rotatably installed on the top of the bottom plate (201), a lower frame member (203) is rotatably installed on the middle of the rotating table (202), and an upper frame member (204) is rotatably installed on the top of the lower frame member (203). An auxiliary mechanism (3) for assisting workers in welding components on the PCB board (1) is arranged in the steering mechanism (2), the auxiliary mechanism (3) comprises a bracket rod (301) symmetrically fixed on both ends of the rotating table (202), the bracket rod (301) is placed on the bottom of the lower frame member (203) and the upper frame member (204), a group of first type tooth grooves (302) are symmetrically formed on the outer sides of the lower frame member (203) and the upper frame member (204), and a group of second type tooth grooves (303) are symmetrically formed on the top of the bracket rod (301). The auxiliary mechanism (3) is used in cooperation with the rotation of the steering mechanism (2) to overturn and change the direction of the PCB board (1) and assist in soldering components.

2. The rotatable PCB soldering device of claim 1, wherein, The lower frame member (203) and the upper frame member (204) are magnetically attracted and clamped, mounting grooves (205) are symmetrically formed on the abutting surfaces of the lower frame member (203) and the upper frame member (204), and the PCB board (1) is clamped and mounted between the lower frame member (203) and the upper frame member (204) through the mounting grooves (205).

3. A rotatable PCB soldering device according to claim 2, wherein, A first type positioning mold (304) is clamped and fixed on the outer side of the first type tooth groove (302) and abuts against the top of the PCB board (1), and a second type positioning mold (305) is clamped and fixed on the outer side of the second type tooth groove (303) and supports the bottom of the PCB board (1).

4. A rotatable PCB soldering device according to claim 3, wherein, A plurality of threaded grooves (2011) are vertically formed on the top of the bottom plate (201), and the bottom plate (201) is bolted to the top of the welding table through the threaded grooves (2011).

5. A rotatable PCB soldering device according to claim 4, wherein, A damping member (2031) is arranged at the rotating connection between the lower frame member (203) and the rotating table (202).

6. A rotatable PCB soldering device according to claim 5, wherein, A plurality of groups of conductive copper sheets (101) are symmetrically arranged on the top of the PCB board (1), and patch resistors for subsequent welding are arranged between each group of conductive copper sheets (101).

7. A rotatable PCB soldering device according to claim 6, wherein, A plurality of reserved notches (3041) are vertically formed in the first type positioning mold (304), and patch resistors are placed in the reserved notches (3041).

8. A rotatable PCB soldering device according to claim 7, wherein, Welding notches (3042) are formed at both ends of each first type positioning mold (304) and vertically arranged on the top of the conductive copper sheet (101).

9. The rotatable PCB soldering device of claim 3, wherein, The second type positioning mold (305) is internally provided with a plurality of bottom supporting grooves (3051), which are distributed at the bottom of the PCB (1) and are used for supporting the relay module fixed to the outer side of the PCB (1).

10. The rotatable PCB soldering device of claim 3, wherein, The first type positioning mold (304) and the second type positioning mold (305) are both made of an alumina ceramic material which does not adhere to soldering tin.

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