Connecting base for lamp strip connection and welding process thereof

Abstract

The invention belongs to the technical field of electronic component welding, particularly relates to a connecting base for lamp strip connection and a welding process thereof, and provides the following scheme aiming at the problems that the requirement of an SMT (Surface Mount Technology) process for the fitting degree of a connecting structure is high, and the phenomena of pseudo soldering and false soldering are easy to occur in the assembling process: the connecting base comprises a fixed base, a sliding groove is formed in the top of the fixed base, a sliding carrying table is installed on the top of the fixed base, a solder paste smearing mechanism and a blow welding mechanism are arranged on the side wall of the fixed base, and the solder paste smearing mechanism comprises a solder paste smearing top frame fixed to the side wall of the fixed base. The solder paste is printed on the through hole bonding pad through the steel mesh in advance, the through hole component and the surface-mounted component are surface-mounted to the corresponding position together through the surface mounting machine, the solder paste is melted in the hot air blow welding area, the solder paste flows to the pin of the through hole component, the bonding pad and the printed board through hole under the action of surface tension, and finally welding is completed.

Description

Technical Field

[0001] This invention relates to the field of electronic component welding technology, and in particular to a connecting base for connecting light strips and its welding process. Background Technology

[0002] SMT (Surface Mount Technology) is a core process in modern electronics manufacturing used to precisely solder microelectronic components onto the surface of printed circuit boards (PCBs). Its core processes include solder paste printing, component placement, and reflow soldering, and it is suitable for manufacturing high-density electronic products such as mobile phones and computers.

[0003] For example, Chinese patent document CN221363384U discloses an electronic component welding device, relating to the field of welding devices. The device includes a support platform with support columns around its bottom perimeter. Support rods are symmetrically arranged on one side of the top of the support platform, with a connecting plate between the tops of the support rods. Protective pads are arranged around the top of the support platform, and a worktable is positioned at the top of the protective pads. Support rods are symmetrically arranged on one side of the top of the worktable, with welding components that cooperate with the worktable positioned between the tops of the support rods. A suction fan is located in the middle of one side of the top of the worktable, and a mounting groove is formed in the middle of the top of the worktable. A mounting device that cooperates with the top of the worktable is installed inside the mounting groove. The component is fixed, and a controller is set on one side of the workbench. The above-disclosed patent technology has the following problems: In the method of soldering electronic components on the circuit board, the existing soldering process is to place the electronic components by SMT and then perform wave soldering or soldering on a soldering station. In the existing technology, the circuit board surface does not have a through-hole structure, so the components are attached to the circuit board surface. During the soldering process, the movement of electronic components will lead to poor connection or unsuccessful soldering. Moreover, in the field of light strips, the connectors obtained by this method are very prone to causing electronic components to fall off during the insertion and removal process. The existing technology does not easily solve this problem. Therefore, there is an urgent need for a connector base for light strip connection and its soldering process to solve the above problems. Summary of the Invention

[0004] Based on the high requirements for the fit of the connection structure in the SMT surface mount technology, and the technical problems of cold solder joints and false solder joints that are prone to occur during the assembly process, this invention proposes a connection base for LED strip connection and its welding process.

[0005] The present invention proposes a connecting base for connecting light strips and its welding process, including a fixed base, the top of which is provided with a sliding groove, and a sliding platform is installed on the top of the fixed base. The side walls of the fixed base are respectively provided with a solder paste application mechanism and a blow soldering mechanism. Solder paste application mechanism: includes a solder paste application top frame fixed to the side wall of a fixed base, a solder paste application slider installed inside the bottom surface of the solder paste application top frame, a lifting application machine box installed at the bottom of the solder paste application slider, a solder paste box installed at the center of the bottom of the application machine box, five arrayed solder paste tubes fixed at the bottom of the solder paste box, and a stencil scraper installed at the bottom of the application machine box. Both the stencil scraper and the solder paste box are installed inside the application machine box via servo motors, which are used to control the deflection of the stencil scraper and the solder paste box. The welding mechanism includes a welding top frame fixed to the side wall of a fixed base. A welding slide is installed inside the bottom surface of the welding top frame. A lifting welding air box is installed at the bottom of the welding slide. Two hot air fan boxes are installed at the bottom of the welding air box. Four hot air welding pipes are installed in an array at the bottom of each of the two hot air fan boxes. The hot air fan boxes are installed inside the welding air box via servo motors. The servo motors are used to control the deflection of the hot air fan boxes.

[0006] Preferably, each of the two fixed base grooves at the top of the fixed base has a sliding platform block slidably installed therein, with two sliding platform blocks installed in each fixed base groove, and the tops of the four sliding platform blocks are fixedly installed between the sliding platform and the platform.

[0007] Preferably, a first limiting slide rod is fixed in the fixed base groove on one side, and the first limiting slide rod is slidably inserted into and installed with the two sliding platform base blocks inside. A first driving screw is installed in the fixed base groove on the other side through a bearing. The first driving screw is threadedly installed with the two sliding platform base blocks inside. The rotation of the first driving screw is used to drive the top sliding platform to move laterally.

[0008] Preferably, a second limiting slide rod is fixed inside the solder paste application top frame, and the second limiting slide rod is slidably sleeved with the solder paste application slider. A second driving screw is also installed inside the solder paste application top frame through a bearing. The second driving screw is threadedly sleeved with the top of the solder paste application slider. The driving rotation of the second driving screw is used to drive the movement of the solder paste application slider.

[0009] Preferably, a stencil housing is installed at the bottom of the side wall of the solder paste application top frame, and a stencil sliding seat is slidably installed inside the bottom surface of the stencil housing. A third drive screw is installed inside the stencil housing via a bearing, and the third drive screw is threadedly fitted to the top of the stencil sliding seat. The rotation of the third drive screw is used to drive the movement of the stencil sliding seat.

[0010] Preferably, a third limiting slide rod is fixed inside the blow welding top frame, and the third limiting slide rod is slidably sleeved between the top of the blow welding slider. A fourth driving screw is installed inside the blow welding top frame through a bearing, and the fourth driving screw is threadedly sleeved between the top of the blow welding slider. The rotation of the fourth driving screw is used to drive the movement of the blow welding slider.

[0011] Preferably, the top of the sliding platform has a cavity, and two symmetrically distributed first sliding clamps are slidably installed in the cavity. A fourth limiting slide rod is fixed inside the sliding platform, and the fourth limiting slide rod is slidably sleeved with the two first sliding clamps. A first bidirectional lead screw is also installed inside the sliding platform through a bearing, and is threadedly sleeved with the two first sliding clamps. The rotation of the first bidirectional lead screw is used to drive the two first sliding clamps to move closer and further apart.

[0012] Preferably, two second sliding clamps are slidably mounted on the top of each of the two first sliding clamps, and a second bidirectional lead screw is mounted inside the first sliding clamp via a bearing. The second bidirectional lead screw is threadedly fitted between the second and the two second sliding clamps, and the rotation of the second bidirectional lead screw is used to drive the two second sliding clamps to move closer to and further away from each other.

[0013] Preferably, a connecting base body is placed on top of the four second sliding clamps.

[0014] A connecting base for LED strip connection is manufactured using a welding process. The connecting base body includes a circuit board body with pin positioning holes on its surface. Solder paste is applied to the top of the circuit board body by a solder paste application mechanism. Electronic components are inserted into the surface of the circuit board body by a pick-and-place machine. The surface of the circuit board body is then soldered by a blow soldering mechanism to fix the electronic components and obtain the connecting base body.

[0015] The beneficial effects of this invention are as follows: 1. The connecting base for LED strip connection and its soldering process involve pre-printing solder paste onto through-hole pads using a stencil. A surface mount device (SMT) then mounts through-hole components and surface mount components together to their corresponding positions. The solder paste is melted in the hot air soldering zone, flowing under surface tension to the through-hole component leads, pads, and printed circuit board (PCB) through-holes, ultimately completing the soldering. The advantages of this connecting base are: it replaces the traditional SMT surface mount process with a lead positioning hole reflow soldering process, combined with interference fit and other fixing methods, solving problems such as cold solder joints, poor solder joints, and difficult maintenance. Traditional surface mount circuit boards do not have lead holes, which can cause misalignment during soldering, leading to poor connections or soldering failures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one end of the overall structure of a connecting base for connecting light strips and its welding process proposed in this invention. Figure 2 The other end of the overall structure of the connecting base for connecting light strips and its welding process proposed in this invention is shown in the schematic diagram. Figure 3 This is a partial cross-sectional schematic diagram of a fixing base for connecting light strips and its welding process, as proposed in this invention. Figure 4 This is a schematic diagram of a solder paste application mechanism for a connecting base and its soldering process for LED strip connection proposed in this invention. Figure 5 This is a schematic diagram of a welding mechanism for a connecting base and welding process for connecting light strips, as proposed in this invention. Figure 6 This is a partial structural diagram of a sliding platform for a connecting base and its welding process for connecting light strips, as proposed in this invention. Figure 7 This is a partial structural diagram of a connecting base for connecting light strips and its welding process, as proposed in this invention. Figure 8 This is a schematic diagram of the state of the connecting base body structure after solder paste has been applied to it, which is a connecting base for connecting light strips and its soldering process proposed in this invention.

[0017] In the diagram: 1. Fixed base; 2. Fixed base slide groove; 3. Sliding platform; 4. Solder paste application top bracket; 5. Hot air blowing top bracket; 6. Closed end plate; 7. Stencil housing; 8. Hot air blowing pipe; 9. Stencil sliding seat; 10. Sliding platform base block; 11. First limit slide rod; 12. First drive screw; 13. First sliding clamp; 14. Second sliding clamp; 15. Connecting base body; 16. Solder paste application slider; 17. First electric push rod; 18. Application housing; 19. Stencil scraper; 20. Solder paste box; 21. Solder paste... 21. Solder paste tube; 22. Second electric push rod; 23. Stencil suction cup; 24. Stencil body; 25. Second limit slide rod; 26. Second drive screw; 27. Third drive screw; 28. Soldering slide block; 29. ​​Third limit slide rod; 30. Fourth drive screw; 31. Third electric push rod; 32. Soldering air box; 33. Hot air box; 34. Second bidirectional screw; 35. Fourth limit slide rod; 36. First bidirectional screw; 37. Electronic component body; 38. Solder paste block; 39. Pin positioning hole; 40. Circuit board body. Detailed Implementation

[0018] Reference Figure 1 , Figure 2 and Figure 3A connecting base for connecting light strips and its welding process are disclosed. The base includes a fixed base 1 with a groove on its top and a sliding platform 3 mounted on its top. A first limiting slide rod 11 is fixed within the groove 2 on one side of the fixed base, and the first limiting slide rod 11 is slidably inserted into two sliding platform base blocks 10 inside. A first driving screw 12 is mounted within the groove 2 on the other side of the fixed base via a bearing, and the first driving screw 12 is threadedly fitted into the two sliding platform base blocks 10 inside. The rotation of the first driving screw 12 drives the top sliding platform 3 to move laterally. The first limiting slide rod 11 limits the position of the sliding platform 3, allowing it to move horizontally. Four mounting positions are provided on the top of the sliding platform 3, each with four countersunk threaded holes. The sliding platform 3 is fixed to the four bottom sliding platform base blocks 10 by bolts.

[0019] Reference Figure 1 In order to facilitate the maintenance and replacement of the first limiting slide bar 11 and the first driving screw 12, a closed end plate 6 is provided at the end of the fixed base 1. The closed end plate 6 is fixed to the fixed base 1 by bolts.

[0020] Reference Figure 1 The side walls of the fixed base 1 are respectively provided with a solder paste application mechanism and a soldering mechanism.

[0021] Reference Figure 4 The solder paste application mechanism includes a solder paste application top frame 4 fixed to the side wall of a fixed base 1. A solder paste application slider 16 is installed inside the bottom surface of the solder paste application top frame 4. A second limiting slide rod 25 is fixed inside the solder paste application top frame 4, and the second limiting slide rod 25 is slidably sleeved with the solder paste application slider 16. A second drive screw 26 is also installed inside the solder paste application top frame 4 via a bearing. The second drive screw 26 is threadedly sleeved with the top of the solder paste application slider 16. The rotation of the second drive screw 26 drives the movement of the solder paste application slider 16. Two first electric push rods 17 are nested at the bottom of the solder paste application slider 16. A lifting coating box 18 is installed at the bottom of the coating box 6. The top of the coating box 18 is fixed to the bottom of the two first electric push rods 17 by bolts. The operation of the two first electric push rods 17 is used to control the lifting of the coating box 18, so that the solder paste coating at the bottom of the coating box 18 can adapt to the board of different heights. A solder paste box 20 is installed in the middle of the bottom of the coating box 18. Five arrayed solder paste tubes 21 are fixed at the bottom of the solder paste box 20. A stencil scraper 19 is also installed at the bottom of the coating box 18. The stencil scraper 19 and the solder paste box 20 are both installed inside the coating box 18 by servo motors. The servo motors are used to control the deflection of the stencil scraper 19 and the solder paste box 20.

[0022] Reference Figure 4 A stencil housing 7 is installed on the bottom side wall of the solder paste application top frame 4. A stencil sliding seat 9 is slidably installed inside the bottom surface of the stencil housing 7. A third drive screw 27 is installed inside the stencil housing 7 via bearings. The third drive screw 27 is threadedly fitted to the top of the stencil sliding seat 9. The rotation of the third drive screw 27 drives the movement of the stencil sliding seat 9. A second electric push rod 22 is nested at the bottom of the stencil sliding seat 9. A stencil suction cup 23 is fixed at the bottom of the second electric push rod 22. The stencil suction cup 23 is connected to a compressor via an air pipe. The operation of the compressor allows the stencil suction cup 23 to adsorb the stencil body 24 at the bottom. The position of the stencil body 24 is moved by the movement of the stencil sliding seat 9, placing the stencil body 24 on top of the circuit board body 40. After the stencil body 24 is placed, the holes of the stencil body 24 coincide with the positions of the pin positioning holes 39 of the circuit board body 40.

[0023] Reference Figure 4 , Figure 7 and Figure 8 When applying solder paste to the circuit board body 40, refer to Figure 8 First, the solder paste applicator slider 26 is moved to the top of the circuit board body 40 by the second drive screw 27. The solder paste box 20 stores solder paste and can discharge the solder paste through the solder paste tube 21 at the bottom. The solder paste is directly squeezed onto the surface of the circuit board body 40. Driven by the first drive screw 12, the stencil scraper 19 scrapes the solder paste off the surface and smooths it out. The resulting solder paste state on the surface of the circuit board body 40 is as follows. Figure 8 As shown, after applying solder paste, the stencil body 24 is removed using the stencil suction cup 23, resulting in the following: Figure 7 The solder paste block 38 shown is subsequently used by an SMT pick and place machine (not shown in the figure) to insert the corresponding electronic component body 37 into the corresponding pin positioning hole 39 one by one, completing the pre-processing of the connection base body 15, and waiting for soldering.

[0024] Reference Figure 5The soldering mechanism includes a soldering top frame 5 fixed to the side wall of a fixed base 1. A soldering slide block 28 is installed inside the bottom surface of the soldering top frame 5. A lifting soldering air box 32 is installed at the bottom of the soldering slide block 28. Two third electric push rods 31 are nested at the bottom of the soldering slide block 28. The top of the soldering air box 32 is fixed to the bottom of the two third electric push rods 31 by bolts. Two hot air boxes 33 are installed at the bottom of the soldering air box 32. A fan and heating components are installed inside the hot air box 33. Four arrayed hot air soldering pipes 8 are installed at the bottom of each of the two hot air box 33. The hot air soldering pipes 8 blow out the generated high-heat gas, and the temperature of the blown gas can meet the temperature requirements of solder. The hot air box 33 is installed inside the soldering air box 32 through a servo motor. The servo motor is used to control the deflection of the hot air box 33.

[0025] Reference Figure 5 , Figure 7 and Figure 8 During the pre-treatment of the connecting base body 15, the servo motor adjusts the hot air blowing pipe 8 to the position to be welded, and the hot air flow directly melts and welds the solder paste block 38 on the pin of the electronic component body 37, so that the electronic component body 37 is welded and fixed.

[0026] Furthermore, two sliding platform blocks 10 are slidably installed in the two fixed base grooves 2 at the top of the fixed base 1. Two sliding platform blocks 10 are installed in each fixed base groove 2, and the tops of the four sliding platform blocks 10 are fixedly installed between the sliding platform 3.

[0027] Furthermore, a third limiting slide rod 29 is fixed inside the blow welding top frame 5. The third limiting slide rod 29 is slidably sleeved between the top of the blow welding slider 28. A fourth drive screw 30 is installed inside the blow welding top frame 5 through a bearing. The fourth drive screw 30 is threadedly sleeved between the top of the blow welding slider 28. The rotation of the fourth drive screw 30 is used to drive the movement of the blow welding slider 28.

[0028] Furthermore, the top of the sliding platform 3 has a cavity, and two symmetrically distributed first sliding clamps 13 are slidably installed in the cavity. A fourth limiting slide rod 35 is fixed inside the sliding platform 3. The fourth limiting slide rod 35 is slidably sleeved with the two first sliding clamps 13. A first bidirectional lead screw 36 is also installed inside the sliding platform 3 through a bearing. It is threadedly sleeved with the two first sliding clamps 13. The rotation of the first bidirectional lead screw 36 is used to drive the two first sliding clamps 13 to move closer and further apart.

[0029] Furthermore, two second sliding clamps 14 are slidably mounted on the top of each of the two first sliding clamps 13, and a second bidirectional lead screw 34 is mounted inside the first sliding clamp 13 via bearings. The second bidirectional lead screw 34 is threadedly fitted with the two second sliding clamps 14, and the rotation of the second bidirectional lead screw 34 is used to drive the two second sliding clamps 14 to move closer to each other and further away.

[0030] Furthermore, a connecting base body 15 is placed on top of the four second sliding clamps 14.

[0031] In use, the invention works as follows: Driven by the first bidirectional lead screw 36 and the second bidirectional lead screw 34, the positions of the four second sliding clamping platforms 14 are adjusted appropriately, and the circuit board body 40 connected to the base body 15 is placed on top and clamped and fixed. The first drive lead screw 12 drives the sliding platform 3 to move. When applying solder paste to the circuit board body 40, the solder paste container 20 stores solder paste, and the solder paste container 20 can discharge the solder paste through the solder paste tube 21 at the bottom. The solder paste is directly squeezed onto the surface of the circuit board body 40. Driven by the first drive lead screw 12, the stencil scraper 19 scrapes the solder paste off the surface and smooths it out, resulting in the solder paste state on the surface of the circuit board body 40. After applying the solder paste, the stencil body 24 is removed by the stencil suction cup 23, resulting in the desired solder paste state. Figure 7 The solder paste block 38 shown is subsequently used by an SMT pick and place machine to insert the corresponding electronic component body 37 into the corresponding pin positioning hole 39 one by one to complete the pre-processing of the connection base body 15, and wait for soldering. In the pre-processing of the connecting base body 15, the servo motor adjusts the hot air blowing pipe 8 to the position to be welded, and the hot air flow directly melts and welds the solder paste block 38 on the pin of the electronic component body 37, so that the electronic component body 37 is welded and fixed, and the connecting base body 15 is obtained.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A soldering process for a light strip connection base, comprising a fixed base (1), characterized in that, The top of the fixed base (1) is provided with a sliding groove, and a sliding platform (3) is installed on the top of the fixed base (1). The side walls of the fixed base (1) are respectively provided with a solder paste application mechanism and a soldering mechanism. Solder paste application mechanism: includes a solder paste application top frame (4) fixed to the side wall of a fixed base (1), a solder paste application slider (16) installed inside the bottom surface of the solder paste application top frame (4), a lifting application machine box (18) installed at the bottom of the solder paste application slider (16), a solder paste box (20) installed at the middle position of the bottom of the application machine box (18), five arrayed solder paste tubes (21) fixed at the bottom of the solder paste box (20), and a stencil scraper (19) installed at the bottom of the application machine box (18). The stencil scraper (19) and the solder paste box (20) are both installed inside the application machine box (18) by a servo motor. The servo motor is used to control the deflection of the stencil scraper (19) and the solder paste box (20). The blow welding mechanism includes a blow welding top frame (5) fixed to the side wall of a fixed base (1). A blow welding slider (28) is installed inside the bottom surface of the blow welding top frame (5). A lifting blow welding air box (32) is installed at the bottom of the blow welding slider (28). Two hot air boxes (33) are installed at the bottom of the blow welding air box (32). Four arrayed hot air blow welding pipes (8) are installed at the bottom of each of the two hot air boxes (33). The hot air box (33) is installed inside the blow welding air box (32) through a servo motor. The servo motor is used to control the deflection of the hot air box (33).

2. The soldering process for a light strip connection base according to claim 1, wherein, The two fixed base grooves (2) at the top of the fixed base (1) each have a sliding platform base block (10) slidably installed in them. Each fixed base groove (2) has two sliding platform base blocks (10) installed in it. The tops of the four sliding platform base blocks (10) are fixedly installed between them and the sliding platform (3).

3. A soldering process for a light strip connection base according to claim 2, characterized in that, A first limiting slide rod (11) is fixed in the fixed base groove (2) on one side, and the first limiting slide rod (11) is slidably inserted into the two sliding platform bottom blocks (10) inside. A first driving screw (12) is installed in the fixed base groove (2) on the other side through a bearing. The first driving screw (12) is threadedly installed into the two sliding platform bottom blocks (10) inside. The rotation of the first driving screw (12) is used to drive the sliding platform (3) at the top to move laterally.

4. The soldering process for a light strip connection base according to claim 1, wherein, The solder paste application top frame (4) is internally fixed with a second limiting slide rod (25), and the second limiting slide rod (25) is slidably sleeved with the solder paste application slider (16). The solder paste application top frame (4) is also internally mounted with a second driving screw (26) through a bearing. The second driving screw (26) is threadedly sleeved with the top of the solder paste application slider (16). The driving rotation of the second driving screw (26) is used to drive the movement of the solder paste application slider (16).

5. The welding process for a light strip connecting base according to claim 1, characterized in that, A stencil housing (7) is installed on the bottom side wall of the solder paste application top frame (4). A stencil sliding seat (9) is slidably installed inside the bottom surface of the stencil housing (7). A third drive screw (27) is installed inside the stencil housing (7) through a bearing. The third drive screw (27) is threadedly fitted with the top of the stencil sliding seat (9). The rotation of the third drive screw (27) is used to drive the movement of the stencil sliding seat (9).

6. The welding process for a light strip connecting base according to claim 1, characterized in that, The blow welding top frame (5) is fixed with a third limiting slide rod (29) inside. The third limiting slide rod (29) is slidably sleeved between the top of the blow welding slider (28). The blow welding top frame (5) is installed with a fourth driving screw (30) through a bearing inside. The fourth driving screw (30) is threadedly sleeved between the top of the blow welding slider (28). The rotation of the fourth driving screw (30) is used to drive the movement of the blow welding slider (28).

7. The welding process for a light strip connecting base according to claim 1, characterized in that, The top of the sliding platform (3) is provided with a cavity, and two symmetrically distributed first sliding clamps (13) are slidably installed in the cavity. A fourth limiting slide rod (35) is fixed inside the sliding platform (3). The fourth limiting slide rod (35) is slidably sleeved with the two first sliding clamps (13). A first bidirectional screw rod (36) is also installed inside the sliding platform (3) through a bearing. It is threadedly sleeved with the two first sliding clamps (13). The rotation of the first bidirectional screw rod (36) is used to drive the two first sliding clamps (13) to move closer and further away from each other.

8. The welding process for a light strip connecting base according to claim 7, characterized in that, Two second sliding clamps (14) are slidably mounted on the top of each of the two first sliding clamps (13), and a second bidirectional screw (34) is mounted inside the first sliding clamp (13) through a bearing. The second bidirectional screw (34) is threadedly fitted between the second and the two second sliding clamps (14). The rotation of the second bidirectional screw (34) is used to drive the two second sliding clamps (14) to move closer and further apart from each other.

9. The welding process for a light strip connecting base according to claim 8, characterized in that, The connecting base body (15) is placed on top of the four second sliding clamps (14).

10. A connecting base for connecting light strips, manufactured using the welding process described in any one of claims 1-9, characterized in that... The connecting base body (15) includes a circuit board body (40). The surface of the circuit board body (40) is provided with pin positioning holes (39). Solder paste blocks (38) are applied to the top of the circuit board body (40) by a solder paste application mechanism. The chip mounter inserts the electronic component bodies (37) on the surface of the circuit board body (40). The surface of the circuit board body (40) is soldered by a blow soldering mechanism to fix the electronic component bodies (37) to obtain the connecting base body (15).

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