PCB welding opening surface cleaning device of LED light bar for automobile illumination

Abstract

The utility model belongs to the technical field of PCB (printed circuit board) production, and discloses a PCB welding port surface cleaning device of an LED (light-emitting diode) light bar for automobile lighting, which comprises a workbench, an avoiding port is arranged on the upper end face of the workbench, positioning plates are fixedly connected to two sides of the avoiding port, and slots are arranged on the positioning plates; the two sets of brush rollers are located on the two sides of the positioning plate, the interior of each brush roller is of a cavity structure, a plurality of air holes are formed in the circumferential side of each brush roller, guide wheels are fixedly connected to the two ends of each brush roller, and the guide wheels make close contact with the side face of the positioning plate; the two sets of fork arms are located on the two sides of the positioning plate, one end of each fork arm is fixedly connected with a hollow pipe, the other end of each fork arm is fixedly connected with a connecting shaft, the hollow pipes are rotationally connected with the guide wheels at one end of the brush roller, the connecting shafts are rotationally connected with the guide wheels at the other end of the brush roller, and guide rods are slidably connected to the fork arms and fixedly connected to the workbench. When dust on the surface of the PCB is removed, the removed dust is sucked away, and the dust is prevented from drifting away and falling back to the PCB.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the PCB board production technical field, concretely relates to the PCB board welding interface surface cleaning device of LED lamp strip for automobile lighting. BACKGROUND

[0002] LED for automobile lighting refers to the use of LED technology for both interior and exterior light sources for exterior and interior lighting. Exterior lighting equipment involves thermal limits and EMC issues, and there are many complex standards for load test unloading. LED car lights can widely use LED car lights to create an interior environment, with a service life of 50,000 hours, and the structure of LED is firm and not easily affected by vibration, and the light output brightness will not decrease significantly during use. LED car lights are suitable for various lighting applications of automobile electronics, including headlamps (high beams and low beams), fog lamps, tail lamps, brake lamps, turn signal lamps, daytime running lamps, pedal lighting lamps, instrument lamps, license plate lamps, door lamps, interior lighting lamps, wide indicator lamps, navigation, entertainment systems, backlights and indicator lamps, etc.

[0003] PCB boards will be welded on LED lamp strips, and the PCB board is a thin sheet used to support and connect electronic components, with copper foil circuits on it, connecting various components through wires and solder joints in electronic devices. The PCB board is the most common basic component in electronic devices, which provides a platform for electronic component installation, connection and support. Usually, the PCB board is made of insulating materials such as glass fiber reinforced epoxy resin (FR-4), which has good insulation performance and mechanical strength.

[0004] During the processing of the PCB board, dust or small particles may adhere to its surface, which may come from airborne particulate matter, processing tools, workbenches, operators, etc. To prevent poor welding on the surface of the PCB board during the later industrial process of surface mounting, component insertion, etc., the PCB board needs to be cleaned. Currently, a brush is generally used to remove dust, but some dust may float in the air and fall back onto the PCB board during cleaning. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a PCB board welding interface surface cleaning device for LED lamp strips for automobile lighting, which can remove dust from the surface of the PCB board and simultaneously suck away the removed dust to avoid the dust from floating back onto the PCB board.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] The PCB board welding interface surface cleaning device for LED lamp strips for automobile lighting comprises:

[0008] The workbench is provided with an upper end face, and an avoiding opening is formed in the upper end face.

[0009] The brush roller is provided with a plurality of air holes in the circumferential side, and guide wheels are fixedly connected to the two ends of the brush roller.

[0010] The fork arm is provided with a hollow tube fixedly connected to one end and a connecting shaft fixedly connected to the other end.

[0011] The above technical scheme has the following principles and technical effects:

[0012] The PCB board is inserted into the two positioning plates, and the brush on the brush roller is in contact with the surface of the PCB board.

[0013] Further, the insertion slot is vertically formed on the opposite surfaces of the two positioning plates.

[0014] Further, the diameter of the brush roller is greater than the diameter of the guide wheel.

[0015] Further, the lower end of the fork arm is fixedly connected with a connecting rod, the connecting rod passes through the avoiding opening, the lower ends of the two connecting rods are fixedly connected with a fixed rod, the lower end of the workbench is fixedly connected with a telescopic cylinder, and the telescopic end of the telescopic cylinder is fixedly connected with the fixed rod.

[0016] Further, the lower end of the workbench is fixedly connected with a negative pressure machine, the negative pressure port of the negative pressure machine is fixedly connected with a hose, the upper end of the hose is fixedly connected with a three-way joint, and the three-way joint is fixedly connected with the two hollow tubes.

[0017] Further, the upper end of the guide rod is fixedly connected with a baffle.

[0018] Further, the upper end of the positioning plate is provided with an insertion hole, and a baffle is inserted into the insertion hole.

[0019] Further, one end of the file is provided with a limiting hole, a limiting column is inserted into the limiting hole, a fixed block is slidably connected to the lower end of the limiting column, the fixed block is fixedly connected to the side of the positioning plate, a baffle is fixedly connected to the upper end and the lower end of the limiting column located above the fixed block, and a spring is sleeved on the limiting column between the upper end surface of the fixed block and the baffle.

[0020] The nouns, conjunctions or adjectives involved in the above technical solutions are explained as follows:

[0021] Fixed connection refers to the connection of parts or components after being fixed, without any relative movement.

[0022] (1) The detachable connection is to fix the parts together by using screws, splines, wedge pins, etc. This connection mode can be disassembled during maintenance, and the parts will not be damaged. However, the specifications of the connecting parts such as bolts, keys and wedge pins must be correct, and the fastening must be appropriate.

[0023] (2) The non-detachable connection mainly refers to welding, riveting and tenon connection, etc. Since maintenance or replacement requires forging, sawing or oxygen cutting for disassembly, the parts cannot be used twice. At the same time, attention should be paid to the process quality, technical detection and remedial measures (such as correction, polishing, etc.) during connection.

[0024] Threaded connection refers to the detachable connection of connected parts by using threaded parts (or threaded parts of connected parts).

[0025] Sliding connection refers to the contact between two objects without fixation, and the two objects can slide relative to each other.

[0026] Rotary connection refers to the connection between parts that allows the parts to rotate relative to each other.

[0027] The beneficial effects of the utility model are as follows:

[0028] When the dust on the surface of the PCB is removed, the removed dust is sucked away, avoiding the dust from floating back to the PCB. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 It is a whole structure schematic view of the embodiment of the utility model;

[0031] Figure 2This is a schematic diagram of the brush roller structure according to an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the positioning plate structure according to an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of the fork arm structure according to an embodiment of the present utility model. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Based on the concept of this application, combined with Figures 1 to 4 This document describes an embodiment of a surface cleaning device for the solder joints of PCB boards used in automotive lighting LED strips. Specifically, this device is constructed as a split structure, comprising a worktable 1, brush rollers 5, and fork arms 8, which work together. The PCB board is inserted into slots 4 with both sides aligned. The PCB board is positioned between two sets of brush rollers 5, with the brushes on the rollers 5 in contact with the PCB board surface. A hollow tube 9 is connected to a negative pressure device. Since the hollow tube 9 is connected to the cavity inside the brush rollers 5, when the negative pressure device operates, the pores 6 on the surface of the brush rollers 5 generate suction. When the fork arms 8 move up and down, the guide wheels 7 rotate to the point where the brush rollers 5 rotate. As the brush rollers 5 move up and down, their rotation causes sliding friction against the surface of the PCB board, removing dust. The removed dust is sucked away, thus preventing dust from easily drifting back onto the PCB board during the cleaning process.

[0037] like Figures 1-4 As shown, a surface cleaning device for the solder joints of LED light strips used in automotive lighting includes:

[0038] Workbench 1, with an clearance opening 2 on the upper surface of workbench 1, and positioning plates 3 fixedly connected to both sides of clearance opening 2, with slots 4 on the positioning plates 3.

[0039] Brush rollers 5, two sets of brush rollers 5 are located on both sides of the positioning plate 3. The inside of the brush rollers 5 is a cavity structure, and several air holes 6 are opened on its periphery. Guide wheels 7 are fixedly connected to both ends of the brush rollers 5, and the guide wheels 7 are in close contact with the side of the positioning plate 3.

[0040] Two sets of fork arms 8 are located on both sides of the positioning plate 3. One end of the fork arm 8 is fixedly connected to a hollow tube 9, and the other end is fixedly connected to a connecting shaft 10. The hollow tube 9 is rotatably connected to the guide wheel 7 at one end of the brush roller 5, and the connecting shaft 10 is rotatably connected to the guide wheel 7 at the other end of the brush roller 5. A guide rod 11 is slidably connected to the fork arm 8, and the guide rod 11 is fixedly connected to the worktable 1.

[0041] In use, align the two sides of the PCB board with the slots 4 and insert it. At this time, the PCB board is located between the two sets of brush rollers 5, and the brushes on the brush rollers 5 are in contact with the surface of the PCB board. Connect the hollow tube 9 to the negative pressure device. Since the hollow tube 9 is connected to the cavity inside the brush rollers 5, when the negative pressure device is working, the air holes 6 on the surface of the brush rollers 5 will generate suction. When the fork arm 8 moves up and down, the guide wheel 7 rotates to the point where the brush roller 5 rotates. As the brush rollers 5 follow the up and down movement, the rotation of the brush rollers 5 will cause sliding friction with the surface of the PCB board, removing the dust from the surface of the PCB board. The removed dust will be sucked away. Therefore, during the dust removal process, the dust is not easy to drift back onto the PCB board.

[0042] The brush roller 5 in this application includes a roller and a brush fixed on the surface of the roller. The roller and the brush together constitute the brush roller 5.

[0043] In some embodiments, the guide wheel 7 can be replaced with a gear, and the side of the positioning plate 3 can be provided with teeth or a rack, with the gear meshing with the teeth or rack.

[0044] In one embodiment of this utility model, the slot 4 is vertically opened on the opposite surfaces of the two sets of positioning plates 3.

[0045] In one embodiment of this invention, the diameter of the brush roller 5 is larger than the diameter of the guide wheel 7. This arrangement ensures that the surface of the brush roller 5 can contact the surface of the PCB board, and also allows the brush roller 5 to slide on the PCB board surface, thereby achieving the action of removing dust.

[0046] When the guide wheel 7 rotates one revolution, the brush roller 5 also rotates one revolution. The height that the guide wheel 7 and the brush roller 5 rise or fall is equal to the circumference of the guide wheel 7. Since the diameter of the brush roller 5 is larger than the diameter of the guide wheel 7, and therefore the circumference of the brush roller 5 is also larger than the circumference of the guide wheel 7, the brush roller 5 will move relative to the PCB board surface during its up-and-down movement, thus achieving a wiping action. The larger the diameter of the brush roller 5 or the smaller the diameter of the guide wheel 7, the better the cleaning effect.

[0047] In one embodiment of this utility model, a connecting rod 12 is fixedly connected to the lower end of the fork arm 8. The connecting rod 12 passes through the clearance opening 2. A fixing rod 13 is fixedly connected between the lower ends of the two sets of connecting rods 12. A telescopic cylinder 14 is fixedly connected to the lower end of the worktable 1. The telescopic end of the telescopic cylinder 14 is fixedly connected to the fixing rod 13. The telescopic end of the telescopic cylinder 14 is telescopic, which can drive the fork arm 8 to move up and down reciprocally.

[0048] In one embodiment of this utility model, a negative pressure machine 15 is fixedly connected to the lower end of the workbench 1. A flexible hose 16 is fixedly connected to the negative pressure port of the negative pressure machine 15, and a three-way connector 17 is fixedly connected to the upper end of the flexible hose 16. The three-way connector 17 is fixedly connected to two hollow tubes 9. The negative pressure machine 15 generates negative pressure when it operates. The negative pressure machine here can be a type of vacuum cleaner.

[0049] In one embodiment of this utility model, a baffle 18 is fixedly connected to the upper end of the guide rod 11 to prevent the fork arm 8 from detaching from the guide rod 11.

[0050] In one embodiment of this utility model, the upper end of the positioning plate 3 is provided with an insertion hole 19, and a retaining strip 20 is inserted into the insertion hole 19. When the PCB board is inserted into the slot 4, the retaining strip 20 is then installed to prevent the PCB board from moving up and dislodging from the slot 4 during the dust cleaning process.

[0051] In one embodiment of this utility model, a limiting hole 21 is provided at one end of the stop bar 20, and a limiting post 22 is inserted into the limiting hole 21. A fixing block 23 is slidably connected to the lower end of the limiting post 22. The fixing block 23 is fixedly connected to the side of the positioning plate 3. A baffle 24 is fixedly connected to both the upper and lower ends of the limiting post 22 at the fixing block 23. A spring 25 is sleeved on the limiting post 22 between the upper end face of the fixing block 23 and the baffle 24. When the limiting post 22 is pulled down, the spring 25 is compressed, and the limiting post 22 disengages from the limiting hole 21, allowing the stop bar 20 to be detached. When the limiting post 22 is released, under the elastic force of the spring 25, the limiting post 22 inserts into the limiting hole 21, thus fixing the stop bar 20.

[0052] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of the PCB board solder joint surface cleaning device for automotive lighting LED light strips provided by this utility model.

[0053] A device for cleaning the solder joint surfaces of PCB boards for automotive LED light strips, including:

[0054] Workbench 1, with an clearance opening 2 on the upper surface of workbench 1, and positioning plates 3 fixedly connected to both sides of clearance opening 2, with slots 4 on the positioning plates 3.

[0055] Brush rollers 5, two sets of brush rollers 5 are located on both sides of the positioning plate 3. The inside of the brush rollers 5 is a cavity structure, and several air holes 6 are opened on its periphery. Guide wheels 7 are fixedly connected to both ends of the brush rollers 5, and the guide wheels 7 are in close contact with the side of the positioning plate 3.

[0056] Two sets of fork arms 8 are located on both sides of the positioning plate 3. One end of the fork arm 8 is fixedly connected to a hollow tube 9, and the other end is fixedly connected to a connecting shaft 10. The hollow tube 9 is rotatably connected to the guide wheel 7 at one end of the brush roller 5, and the connecting shaft 10 is rotatably connected to the guide wheel 7 at the other end of the brush roller 5. A guide rod 11 is slidably connected to the fork arm 8, and the guide rod 11 is fixedly connected to the worktable 1.

[0057] Slot 4 is vertically opened on the opposite surfaces of the two sets of positioning plates 3.

[0058] The diameter of the brush roller 5 is larger than the diameter of the guide roller 7.

[0059] A connecting rod 12 is fixedly connected to the lower end of the fork arm 8. The connecting rod 12 passes through the clearance opening 2. A fixed rod 13 is fixedly connected between the lower ends of the two sets of connecting rods 12. A telescopic cylinder 14 is fixedly connected to the lower end of the worktable 1. The telescopic end of the telescopic cylinder 14 is fixedly connected to the fixed rod 13.

[0060] A negative pressure machine 15 is fixedly connected to the lower end of the workbench 1. A hose 16 is fixedly connected to the negative pressure port of the negative pressure machine 15. A three-way connector 17 is fixedly connected to the upper end of the hose 16. The three-way connector 17 is fixedly connected to two hollow tubes 9.

[0061] A baffle 18 is fixedly connected to the upper end of the guide rod 11.

[0062] The upper end of the positioning plate 3 has an insertion hole 19, and a retaining strip 20 is inserted into the insertion hole 19.

[0063] A limiting hole 21 is provided at one end of the stop bar 20. A limiting post 22 is inserted into the limiting hole 21. A fixing block 23 is slidably connected to the lower end of the limiting post 22. The fixing block 23 is fixedly connected to the side of the positioning plate 3. A baffle 24 is fixedly connected to both the upper and lower ends of the fixing block 23 on the limiting post 22. A spring 25 is sleeved on the limiting post 22 between the upper end face of the fixing block 23 and the baffle 24.

[0064] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. A device for cleaning the surface of the solder joints of LED light strips for automotive lighting, characterized in that, include: A workbench (1) is provided with a clearance opening (2) on the upper surface of the workbench (1). Positioning plates (3) are fixedly connected to both sides of the clearance opening (2). Slots (4) are provided on the positioning plates (3). Brush rollers (5), two sets of brush rollers (5) are located on both sides of the positioning plate (3). The inside of the brush rollers (5) is a cavity structure, and several air holes (6) are opened on its periphery. Guide wheels (7) are fixedly connected to both ends of the brush rollers (5). The guide wheels (7) are in close contact with the side of the positioning plate (3). Two sets of fork arms (8) are located on both sides of the positioning plate (3). One end of the fork arm (8) is fixedly connected to a hollow tube (9), and the other end is fixedly connected to a connecting shaft (10). The hollow tube (9) is rotatably connected to the guide wheel (7) at one end of the brush roller (5), and the connecting shaft (10) is rotatably connected to the guide wheel (7) at the other end of the brush roller (5). A guide rod (11) is slidably connected on the fork arm (8), and the guide rod (11) is fixedly connected to the worktable (1).

2. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 1, characterized in that, The slot (4) is vertically opened on the opposite surfaces of the two sets of positioning plates (3).

3. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 2, characterized in that, The diameter of the brush roller (5) is greater than the diameter of the guide wheel (7).

4. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 3, characterized in that, The lower end of the fork arm (8) is fixedly connected to a connecting rod (12), the connecting rod (12) passes through the clearance opening (2), and a fixed rod (13) is fixedly connected between the lower ends of the two sets of connecting rods (12). The lower end of the workbench (1) is fixedly connected to a telescopic cylinder (14), and the telescopic end of the telescopic cylinder (14) is fixedly connected to the fixed rod (13).

5. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 4, characterized in that, A negative pressure machine (15) is fixedly connected to the lower end of the workbench (1), a hose (16) is fixedly connected to the negative pressure port of the negative pressure machine (15), a three-way connector (17) is fixedly connected to the upper end of the hose (16), and the three-way connector (17) is fixedly connected to two hollow tubes (9).

6. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 1, characterized in that, A baffle (18) is fixedly connected to the upper end of the guide rod (11).

7. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 1, characterized in that, The upper end of the positioning plate (3) is provided with a socket (19), and a retaining strip (20) is inserted into the socket (19).

8. The PCB board solder joint surface cleaning device for automotive lighting LED light strips according to claim 7, characterized in that, One end of the stop bar (20) has a limiting hole (21), and a limiting post (22) is inserted into the limiting hole (21). A fixing block (23) is slidably connected to the lower end of the limiting post (22). The fixing block (23) is fixedly connected to the side of the positioning plate (3). A baffle (24) is fixedly connected to both the upper and lower ends of the limiting post (22) and the baffle (24). A spring (25) is sleeved on the limiting post (22) between the upper end face of the fixing block (23) and the baffle (24).

Images