Integrated platform for fixing PCB (Printed Circuit Board) and welding SMD (Surface Mounted Device)

Abstract

The utility model belongs to the field of PCB (printed circuit board) processing, and provides a PCB fixing and surface-mounted device welding integrated platform which comprises a carrying table, a left pair of sliding grooves and a right pair of sliding grooves are formed in the carrying table, slidable fixing bolts are arranged in the sliding grooves, and the surface-mounted device welding integrated platform is arranged on the carrying table. A pair of up-down adjusting nuts is screwed into each fixing bolt, connecting plates are arranged on the two fixing bolts on the same side and located on the lower adjusting nuts, the front ends of the two sides of each connecting plate are bent downwards to form pressing blocks, 7-shaped clamping blocks are formed on the top faces of the connecting plates, and clamping grooves are formed between the clamping blocks and the connecting plates. A spring is arranged on the fixing bolt and located between the upper adjusting nut and the connecting plate. On one hand, the integrated platform for fixing the PCB and welding the surface-mounted device has the effects of fixing and limiting the PCB, the phenomena of pseudo soldering and short circuit caused by displacement and deflection of the device due to small-amplitude deviation of the PCB in the welding process are avoided, on the other hand, the device can be welded on the PCB, and the integrated platform has a welding function.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of PCB board processing, especially relates to a PCB board fixing and surface mount device welding integrated platform. BACKGROUND

[0002] PCB board is also called printed circuit board, and it is a provider of electrical connection of electronic components. The main advantage of adopting the circuit board is to greatly reduce wiring and assembly errors, and improve automation level and production efficiency. The printed circuit board commonly said refers to bare board, that is, the circuit board without surface mount device.

[0003] When the volume of PCB circuit board is small, and the welding quantity is less, manual welding of PCB circuit board is generally used instead of large-scale surface mount device welding. Because the volume of PCB circuit board is small and the weight is light, the device is easily displaced and inclined in the welding process, so that virtual welding and short circuit phenomenon are caused, and some devices need to be pressed tightly by external force to fully adhere to the PCB board, and need to be cooled, and static electricity is removed. The PCB board fixing and surface mount device welding integrated platform can solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the purpose of the utility model is to provide a PCB board fixing and surface mount device welding integrated platform, which aims to solve the problem that the existing PCB board fixing and surface mount device welding integrated platform is easily displaced and inclined in the welding process, so that virtual welding and short circuit phenomenon are caused.

[0005] The utility model adopts the following technical scheme:

[0006] The PCB board fixing and surface mount device welding integrated platform includes a loading platform, a pair of sliding grooves are formed on the left and right sides of the loading platform, a fixing bolt which can slide is arranged in each sliding groove, a pair of upper and lower adjusting nuts are screwed into each fixing bolt, a connecting plate is arranged on the same side of the two fixing bolts and located on the lower adjusting nut, the front end of the connecting plate on both sides is bent downward to form a pressing block, a 7-shaped clamping block is formed on the top surface of the connecting plate, a clamping groove is formed between the clamping block and the connecting plate, a spring is arranged between the upper adjusting nut and the connecting plate of the fixing bolt, and a surface mount device welding assembly is arranged on the loading platform.

[0007] Further, four wire holes are uniformly formed on one side of the loading platform, and an internal thread is formed on the other side, the internal thread is used for installing an electrostatic discharge screw, the surface mount device welding assembly includes a heating core installed in the wire hole, the four heating cores are connected in parallel after passing through the wire hole, a bakelite box is further arranged on the side wall of the loading platform, the wire hole is located in the bakelite box, an over-temperature fuse is arranged in the bakelite box, one end of the over-temperature fuse is connected with a power line and the power line passes through the bakelite box, and the other end is connected with the heating core in series.

[0008] Further, the side wall of the carrier is provided with a through heat dissipation hole, which is arranged in parallel with the sliding groove.

[0009] Further, the lower end of the fixing bolt is screwed into a locking nut, which locks the fixing bolt on the sliding groove.

[0010] Further, the bottom surface of the carrier is provided with a foot bolt at each corner.

[0011] The PCB board fixing and patch device welding integrated platform has the functions of fixing and limiting the PCB board, avoids the small offset of the PCB board in the welding process, and avoids the device displacement, skew and virtual welding and short circuit phenomenon. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The PCB board fixing and patch device welding integrated platform is provided.

[0013] Figure 2 The PCB board fixing and patch device welding integrated platform is provided. DETAILED DESCRIPTION

[0014] In order to make the patent purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0015] In order to illustrate the technical solutions of the present application, the specific embodiments will be described below.

[0016] In order to facilitate the description, only the parts related to the embodiments of the present application are shown.

[0017] In combination with Figures 1-2 As shown in the drawings, the PCB board fixing and patch device welding integrated platform comprises a carrier 1, the carrier 1 is provided with two pairs of left and right sliding grooves 2, the sliding groove 2 is provided with a slidable fixing bolt 3, each fixing bolt 3 is screwed into a pair of upper and lower adjusting nuts, wherein the upper adjusting nut is marked as 41, and the lower adjusting nut is marked as 42. The two fixing bolts 3 on the same side and located on the lower adjusting nut 42 are provided with a connecting plate 5, the front ends of the two sides of the connecting plate 5 are downwardly bent to form a pressing block 6, the top surface of the connecting plate is formed with a 7-shaped clamping block 7, the clamping block 7 and the connecting plate 5 form a clamping groove 8, the fixing bolt 3 is provided with a spring 9 between the upper adjusting nut 41 and the connecting plate 5, and the carrier 1 is provided with a patch device welding assembly.

[0018] PCB board, also known as printed circuit board, is the provider of electrical connection of electronic components. The main advantage of using circuit board is to greatly reduce wiring and assembly errors, and improve the automation level and production labor rate. The printed circuit board we usually say refers to the bare board, that is, the circuit board without the surface-mounted device. In actual situation, different surface-mounted devices can be welded on the PCB board according to the requirements by using the device.

[0019] The PCB board fixing and surface-mounted device welding integrated platform has the functions of fixing and limiting the PCB board, avoiding small offset of the PCB board during welding process, which can cause device displacement, skew, and thus cause virtual welding and short circuit phenomenon. On the other hand, the device can also be welded on the PCB board, and has the function of welding.

[0020] In the structure, the lower part of the fixing bolt 3 is screwed into a locking nut 8, which locks the fixing bolt 3 on the sliding groove 2. When the device is used to fix and limit the PCB board, the distance between the two pairs of fixing bolts needs to be adjusted according to the volume of the PCB board to be welded, and then each locking nut is tightened one by one after the position of the fixing bolt is determined. The locking nut locks the fixing bolt on the sliding groove. The two connecting plates are at the same height position, and then the PCB board is placed parallel and inserted into the four clamping grooves, and the PCB board is clamped by the four clamping grooves. In this way, the PCB board can be prevented from shifting during welding, and the welding quality is improved.

[0021] During the process of welding the device on the PCB board, the height position of welding can be adjusted according to the actual situation. Specifically, if the welding height of the PCB board needs to be adjusted, only the upper and lower adjusting nuts on each fixing bolt need to be turned. If the welding height needs to be adjusted downward by a small distance, only the upper and lower adjusting nuts need to be turned downward by the same number of turns. It is worth noting that after the adjustment is completed, the spring always needs to be kept in the compressed state.

[0022] In addition, when welding a special-shaped PCB board, the clamping groove is not easy to clamp the PCB board. At this time, the special-shaped PCB board can be placed on the stage according to the requirements, and then the upper and lower adjusting nuts on each fixing bolt are turned downward. The connecting plate is lowered to the lowest position, and the spring is still in the compressed state. The four pressing blocks press the special-shaped PCB board tightly, so that it is stable and conducive to the subsequent welding work. If special devices are welded, the gas pipe, ground wire, heat dissipation, and static electricity discharge are provided to protect the device.

[0023] As a preferred structure, as Figure 1The side of the carrier 1 is uniformly provided with four wire holes, and the other side is provided with an inner screw 10, which is used for mounting an electrostatic discharge screw (not shown in the figure). The patch device welding assembly comprises a heating core 11 mounted in the wire hole, and the four heating cores 11 are connected in parallel after passing through the wire hole. The sidewall of the carrier 1 is further provided with a bakelite box 12, which has the characteristics of high temperature resistance. The wire hole is located in the bakelite box, and the bakelite box 12 is provided with an over-temperature fuse 13. One end of the over-temperature fuse 13 is connected with a power line 14 which passes through the bakelite box 12, and the other end is connected in series with the heating core 11.

[0024] When the volume of the PCB circuit board is small, the patch device can be welded on the PCB circuit board by using the device. Then, four fixing bolts are removed from the carrier, and the PCB board on which the solder paste has been placed and the patch device has been placed is placed on the carrier. The power line is connected to a 24V power supply to power the four heating cores. Under the action of the heating core, the whole carrier will heat up. The carrier will melt the solder paste on the PCB board and weld the patch device on the PCB board during the heating process. Compared with manual welding, the welding efficiency is higher and the welding quality is good, and the board surface is clean and beautiful.

[0025] In the structure, the sidewall of the carrier 1 is provided with a through cooling hole 15, which is arranged in parallel with the sliding groove 2. In the actual welding process, the cooling hole is communicated with an air pipe. When welding special devices and releasing static electricity to protect special devices, the air pipe blows air to the cooling hole for cooling, and the electrostatic discharge screw is connected to the ground to release static electricity.

[0026] In addition, the carrier 1 is provided with a foot bolt 16 at the four corners of the bottom surface. During the actual process of welding the PCB board, the carrier can be mounted on the operation platform through the foot bolt.

[0027] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A PCB board fixing and surface mount device soldering integrated platform, characterized in that: The integrated platform for PCB board fixing and surface mount device soldering includes a platform with two pairs of sliding grooves on the left and right sides. Each sliding groove contains a sliding fixing bolt, and each fixing bolt has a pair of upper and lower adjusting nuts screwed into it. On the same side, two fixing bolts and the lower adjusting nut are provided with a connecting plate. The front ends of both sides of the connecting plate are bent downward to form pressure blocks. The top surface of the connecting plate is formed with a 7-shaped locking block, and a locking groove is formed between the locking block and the connecting plate. A spring is provided on the fixing bolt between the upper adjusting nut and the connecting plate. The platform is provided with a surface mount device soldering assembly.

2. The PCB board fixing and surface mount device soldering integrated platform as described in claim 1, characterized in that: The platform has four wire holes evenly spaced on one side and internal threads on the other side. The internal threads are used to install static discharge screws. The surface mount device welding assembly includes heating elements installed in the wire holes. The four heating elements pass through the wire holes and are connected in parallel. The side wall of the platform is also provided with a bakelite box. The wire holes are located inside the bakelite box. An overheat fuse is provided inside the bakelite box. One end of the overheat fuse is connected to a power cord, which passes through the bakelite box. The other end is connected in series with the heating elements.

3. The PCB board fixing and surface mount device soldering integrated platform as described in claim 2, characterized in that: The side wall of the platform has through-holes for heat dissipation, and the heat dissipation holes are arranged parallel to the sliding groove.

4. The PCB board fixing and surface mount device soldering integrated platform as described in claim 3, characterized in that: A lock nut is screwed into the bottom of the fixing bolt, and the lock nut locks the fixing bolt into the sliding groove.

5. The PCB board fixing and surface mount device soldering integrated platform as described in claim 4, characterized in that: Machine foot bolts are provided at the four corners of the bottom surface of the platform.

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