PCB positioning structure and encoder

Abstract

The utility model belongs to the technical field of laser engraving equipment, and discloses a PCB (printed circuit board) positioning structure and an encoder, which comprises a lifting plate, connecting plates are fixed on the lifting plate, the middle connecting plate is fixed with a limit frame, driving blocks are fixed on the side surfaces of the other four groups of connecting plates, at least two guide rods are connected onto each group of driving blocks in a sliding manner, and the guide rods are fixed with the limit frame. First racks are fixed to the driving block close to the end of the limiting frame, a first gear is meshed between the two first racks, second racks are fixed to the driving block away from the end of the limiting frame, and a second gear is meshed between the two second racks. A raised line is fixed on the upper end surface of the conveying belt; the baffles are arranged on the two sides of the conveying belt and fixed to the connecting plate. The output end of the lifting cylinder is fixed to the end of the limiting frame. In the process of conveying the PCBs through the conveying belt, the PCBs on the conveying belt can be transferred to the position under the laser head for laser coding, and the PCBs can be positioned in the transferring process.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser engraving equipment, and particularly relates to a PCB board positioning structure and an encoder. Background Art

[0002] Laser engraving machines use laser beams to create permanent marks on surfaces or inside transparent materials. Laser beams can produce both chemical and physical effects on materials. When the material absorbs the laser light instantaneously, a physical or chemical reaction occurs, creating a mark or displaying a pattern or text. This is why they are also called laser marking machines or laser engraving machines.

[0003] The laser engraving machines currently used on production lines are generally equipped with conveyor belts to transport products. Since the conveyor belts cannot limit the position of the products during transportation, it is difficult to fix the position of the products when they are transported by the conveyor belts. This makes it easy for the products to change position during transportation, making it impossible for them to reach the required position correctly, thus affecting work efficiency. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a PCB board positioning structure and encoder. In the process of transporting the PCB board by a conveyor belt, the PCB board on the conveyor belt can be transferred to the bottom of the laser head for laser encoding. During the transportation process, the PCB board can be positioned.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] PCB board positioning structure, including:

[0007] A lifting plate, five groups of lifting plates are arranged horizontally and distributed at equal intervals, one end of the lifting plate is fixedly connected to a connecting plate vertically, a limit frame is provided on the side of the connecting plate, wherein a group of connecting plates located in the middle is fixedly connected to the limit frame, and the sides of the other four groups of connecting plates are fixedly connected to driving blocks, and each group of driving blocks is slidably connected to at least two guide rods, both ends of the guide rods are fixedly connected to the inner wall of the limit frame, the other end of the driving block close to the end of the limit frame is fixedly connected to a first rack, a first gear is meshed between the two groups of first racks, and the other end of the driving block away from the end of the limit frame is fixedly connected to a second rack, a second gear with a diameter smaller than the first gear is meshed between the two groups of second racks, and the second gear is fixedly connected to the outer side surface of the first gear;

[0008] A conveyor belt, wherein the upper end surface of the conveyor belt is fixedly connected with four groups of convex strips along its length direction, and the convex strips are located between adjacent lifting plates;

[0009] Baffles are provided on both sides of the conveyor belt, and one end of the baffles is fixedly connected to the lower end side surface of the outermost connecting plate;

[0010] The lifting cylinder is arranged on both sides of the conveyor belt, and the output end of the lifting cylinder is fixedly connected to a fixing plate, and the fixing plate is fixedly connected to the end of the limit frame.

[0011] The above technical solution, its principle and technical effects:

[0012] The lifting cylinder drives the limit frame to move downward, so that the lifting plate is located between the corresponding adjacent convex strips, and the upper end surface of the lifting plate cannot be higher than the upper end surface of the convex strip. At this time, the conveyor belt is conveying a PCB board, and the PCB board is located on the upper end surface of the convex strip. When the PCB board moves to the upper end of the lifting plate, it is blocked and stops moving. Then the lifting cylinder drives the limit frame to move upward, so that the lifting plate is away from the conveyor belt. At the same time, the driving source drives the first gear and the second gear to rotate, so that the driving block moves closer to the middle, and then the lifting plate moves closer to the middle. At the same time, the baffles on both sides also move closer to the middle to position the PCB board so that the PCB board is located in the middle. Driven by the lifting cylinder, the PCB board is lifted to the bottom of the laser head on the encoder for encoding.

[0013] Furthermore, the thickness of the convex strip is greater than the thickness of the lifting plate.

[0014] Furthermore, the circumference of the first gear is twice the circumference of the second gear.

[0015] Furthermore, a stopper is fixedly connected to the upper end surface of the lifting plate.

[0016] Furthermore, a reinforcement plate is fixedly connected between the stop block and the connecting plate.

[0017] Furthermore, a buffer plate is provided on the inner side of the baffle, a side surface of the buffer plate is fixedly connected to a limiting column, the limiting column is slidably connected to the baffle, and a spring is sleeved on the limiting column between the baffle and the buffer plate.

[0018] Furthermore, a fixing bracket is fixedly connected to the inner side of the limiting frame, a motor is fixedly connected to the fixing bracket, and an output end of the motor is fixedly connected to the first gear and the second gear.

[0019] Encoder, including PCB board positioning structure.

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

[0021] A fixed connection is a connection in which parts or components are fixed without any relative movement. There are two types of connections: detachable and non-detachable.

[0022] (1) A removable connection is a method of fastening components together using screws, splines, wedge pins, etc. This type of connection allows for disassembly during maintenance without damaging the components. However, the connectors used must be of the correct specifications (e.g., length of bolts, keys, wedge pins) and properly tightened.

[0023] (2) Non-detachable connections mainly refer to welding, riveting, and tenoning. Since they require forging, sawing, or oxygen cutting to disassemble during repair or replacement, spare parts generally cannot be reused. At the same time, when making connections, attention should be paid to workmanship quality, technical inspection, and remedial measures (such as calibration, polishing, etc.).

[0024] A threaded connection refers to a detachable connection in which the connected parts are connected into one piece using a threaded part (or the threaded part of the connected parts).

[0025] A sliding connection is when two objects are in contact but not fixed and can slide relative to each other.

[0026] A rotational connection is a connection between parts that allows the parts to rotate relative to each other.

[0027] Beneficial effects of the utility model:

[0028] During the process of transporting PCB boards through the conveyor belt, the PCB boards on the conveyor belt can be transferred to the bottom of the laser head for laser encoding. During the transportation process, the PCB boards can be positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the lifting plate structure of an embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the driving block of an embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of the limit frame structure of an embodiment of the utility model;

[0034] Figure 5 It is a schematic diagram of the baffle structure of an embodiment of the present utility model. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] According to the concept of this application, Figures 1 to 5 To describe the embodiments of the PCB board positioning structure and encoder. When the PCB board moves to the upper end of the lifting plate 1, it is blocked and stops moving. Then the lifting cylinder 12 drives the limit frame 3 to move upward, so that the lifting plate 1 is away from the conveyor belt 9. At the same time, the driving source drives the first gear 6 and the second gear 8 to rotate, so that the driving block 4 moves closer to the middle, and then the lifting plate 1 moves closer to the middle. At the same time, the baffles 11 on both sides also move closer to the middle to position the PCB board so that the PCB board is located in the middle. Driven by the lifting cylinder 12, the PCB board is lifted to the bottom of the laser head on the encoder for encoding. When the encoding is completed, the PCB board can be removed manually.

[0038] like Figure 1-5 As shown, the PCB board positioning structure includes:

[0039] Lifting plate 1, five groups of lifting plates 1 are arranged horizontally and distributed at equal intervals, one end of the lifting plate 1 is fixedly connected to a connecting plate 2 vertically, and a limiting frame 3 is provided on the side of the connecting plate 2, wherein a group of connecting plates 2 located in the middle is fixedly connected to the limiting frame 3, and the sides of the other four groups of connecting plates 2 are fixedly connected to driving blocks 4, and each group of driving blocks 4 is slidably connected with at least two guide rods 21, and both ends of the guide rods 21 are fixedly connected to the inner wall of the limiting frame 3, and the other end of the driving block 4 near the end of the limiting frame 3 is fixedly connected to a first rack 5, and a first gear 6 is meshed between the two groups of first racks 5, and the other end of the driving block 4 away from the end of the limiting frame 3 is fixedly connected to a second rack 7, and a second gear 8 with a diameter smaller than the first gear 6 is meshed between the two groups of second racks 7, and the second gear 8 is fixedly connected to the outer side surface of the first gear 6;

[0040] The conveyor belt 9 has four groups of convex strips 10 fixedly connected to its upper end surface along its length direction, and the convex strips 10 are located between adjacent lifting plates 1.

[0041] Baffle 11, baffle 11 is arranged on both sides of the conveyor belt 9, and one end of the baffle 11 is fixedly connected to the lower end side surface of the outermost connecting plate 2;

[0042] The lifting cylinder 12 is arranged on both sides of the conveyor belt 9 , and the output end of the lifting cylinder 12 is fixedly connected to a fixing plate 13 , and the fixing plate 13 is fixedly connected to the end of the limit frame 3 .

[0043] During operation, the lifting cylinder 12 drives the limit frame 3 downward, positioning the lifting plate 1 between the corresponding adjacent ridges 10. The upper end of the lifting plate 1 cannot be higher than the upper end of the ridges 10. At this point, a PCB is being transported on the conveyor belt 9 and positioned on the upper end of the ridges 10. When the PCB reaches the upper end of the lifting plate 1, it is blocked and stops. The lifting cylinder 12 then drives the limit frame 3 upward, moving the lifting plate 1 away from the conveyor belt 9. Simultaneously, the drive source rotates the first gear 6 and the second gear 8, causing the drive block 4 to move toward the center, thereby moving the lifting plate 1 toward the center. Simultaneously, the baffles 11 on both sides also move toward the center, positioning the PCB so that it is exactly centered. Driven by the lifting cylinder 12, the PCB is lifted to a position directly below the laser head on the encoder for encoding. Once encoding is complete, the PCB can be manually removed.

[0044] In one embodiment of the present invention, the thickness of the ridges 10 is greater than the thickness of the lifting plate 1. When the lifting plate 1 is located between the ridges 10, the PCB board supported by the upper end of the ridges 10 can be smoothly moved to the upper end of the lifting plate 1, thereby preventing the thickness of the lifting plate 1 from being too large and blocking the movement of the PCB board.

[0045] In one embodiment of the present invention, the circumference of the first gear 6 is twice the circumference of the second gear 8. When the lifting plates 1 move toward the middle, the spacing between adjacent lifting plates 1 is ensured to remain the same.

[0046] In one embodiment of the present invention, a stopper 14 is fixedly connected to the upper end of the lifting plate 1. When the PCB moves to the upper end of the lifting plate 1, the stopper 14 is used to prevent the PCB from moving forward. At the same time, a gap is left between the stopper 14 and the connecting plate 2 to prevent the laser transmitter from coming into rigid contact with the connecting plate 2 when the code is offset.

[0047] In one embodiment of the present invention, a reinforcing plate 15 is fixedly connected between the stopper 14 and the connecting plate 2 to increase the bending strength of the lifting plate 1 .

[0048] In one embodiment of the present invention, a buffer plate 16 is disposed on the inner side of the baffle 11. A retaining post 17 is fixedly connected to the side of the buffer plate 16. The retaining post 17 is slidably connected to the baffle 11. A spring 18 is sleeved on the retaining post 17 between the baffle 11 and the buffer plate 16. When the lifting plate 1 moves toward the center, the two baffles 11 move toward each other. The baffles 11 are used to position and align the PCB while preventing rigid contact between the PCB and the baffle 11, which could damage the PCB.

[0049] In one embodiment of the present invention, a fixing bracket 19 is fixedly connected to the inner side of the limit frame 3, and a motor 20 is fixedly connected to the fixing bracket 19. The output end of the motor 20 is fixedly connected to the first gear 6 and the second gear 8. The motor 20 is used to drive the first gear 6 and the second gear 8 to rotate simultaneously.

[0050] The encoder includes the PCB board positioning structure as described above.

[0051] It should be noted that the conveyor belt 9 and the lifting cylinder 12 in the present application are both installed on an encoder. The encoder in the present application can encode the PCB board. The encoder in the present application includes but is not limited to a laser engraving machine.

[0052] The PCB board positioning structure and encoder provided by the present invention are further described below in conjunction with the accompanying drawings and implementation methods.

[0053] PCB board positioning structure, including:

[0054] Lifting plate 1, five groups of lifting plates 1 are arranged horizontally and distributed at equal intervals, one end of the lifting plate 1 is fixedly connected to a connecting plate 2 vertically, and a limiting frame 3 is provided on the side of the connecting plate 2, wherein a group of connecting plates 2 located in the middle is fixedly connected to the limiting frame 3, and the sides of the other four groups of connecting plates 2 are fixedly connected to driving blocks 4, and each group of driving blocks 4 is slidably connected with at least two guide rods 21, and both ends of the guide rods 21 are fixedly connected to the inner wall of the limiting frame 3, and the other end of the driving block 4 near the end of the limiting frame 3 is fixedly connected to a first rack 5, and a first gear 6 is meshed between the two groups of first racks 5, and the other end of the driving block 4 away from the end of the limiting frame 3 is fixedly connected to a second rack 7, and a second gear 8 with a diameter smaller than the first gear 6 is meshed between the two groups of second racks 7, and the second gear 8 is fixedly connected to the outer side surface of the first gear 6;

[0055] The conveyor belt 9 has four groups of convex strips 10 fixedly connected to its upper end surface along its length direction, and the convex strips 10 are located between adjacent lifting plates 1.

[0056] Baffle 11, baffle 11 is arranged on both sides of the conveyor belt 9, and one end of the baffle 11 is fixedly connected to the lower end side surface of the outermost connecting plate 2;

[0057] The lifting cylinder 12 is arranged on both sides of the conveyor belt 9 , and the output end of the lifting cylinder 12 is fixedly connected to a fixing plate 13 , and the fixing plate 13 is fixedly connected to the end of the limit frame 3 .

[0058] The thickness of the ridge 10 is greater than the thickness of the lifting plate 1 .

[0059] The circumference of the first gear 6 is twice the circumference of the second gear 8 .

[0060] A stopper 14 is fixedly connected to the upper end surface of the lifting plate 1 .

[0061] A reinforcement plate 15 is fixedly connected between the stopper 14 and the connecting plate 2 .

[0062] A buffer plate 16 is provided on the inner side of the baffle 11 , and a side surface of the buffer plate 16 is fixedly connected to a limiting column 17 , which is slidably connected to the baffle 11 , and a spring 18 is sleeved on the limiting column 17 between the baffle 11 and the buffer plate 16 .

[0063] A fixing bracket 19 is fixedly connected to the inner side of the limiting frame 3 , and a motor 20 is fixedly connected to the fixing bracket 19 . The output end of the motor 20 is fixedly connected to the first gear 6 and the second gear 8 .

[0064] The encoder includes the PCB board positioning structure as described above.

[0065] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention.

Claims

1. PCB board positioning structure, characterized by: include: A lifting plate (1), five groups of lifting plates (1) are arranged in a horizontal direction and are distributed at equal intervals, one end of the lifting plate (1) is fixedly connected to a connecting plate (2) in a vertical direction, a limit frame (3) is arranged on the side of the connecting plate (2), wherein a group of connecting plates (2) located in the middle is fixedly connected to the limit frame (3), and the sides of the other four groups of connecting plates (2) are fixedly connected to driving blocks (4), and each group of driving blocks (4) is slidably connected to at least two guide rods (21), and both ends of the guide rods (21) are fixedly connected to the guide rods (21). The first rack (5) is fixedly connected to the inner wall of the limit frame (3); the other end of the driving block (4) close to the end of the limit frame (3) is fixedly connected to the first rack (5); a first gear (6) is meshed between the two groups of first racks (5); the other end of the driving block (4) away from the end of the limit frame (3) is fixedly connected to the second rack (7); a second gear (8) with a diameter smaller than the first gear (6) is meshed between the two groups of second racks (7); the second gear (8) is fixedly connected to the outer side surface of the first gear (6); A conveyor belt (9), wherein the upper end surface of the conveyor belt (9) is fixedly connected with four groups of convex strips (10) along its length direction, and the convex strips (10) are located between adjacent lifting plates (1); Baffles (11), the baffles (11) are arranged on both sides of the conveyor belt (9), and one end of the baffles (11) is fixedly connected to the lower end side surface of the outermost connecting plate (2); A lifting cylinder (12) is provided on both sides of the conveyor belt (9), and an output end of the lifting cylinder (12) is fixedly connected to a fixing plate (13), and the fixing plate (13) is fixedly connected to the end of the limit frame (3).

2. The PCB board positioning structure according to claim 1, characterized in that: The thickness of the convex strip (10) is greater than the thickness of the lifting plate (1).

3. The PCB board positioning structure according to claim 2, characterized in that: The circumference of the first gear (6) is twice the circumference of the second gear (8).

4. The PCB board positioning structure according to claim 3, characterized in that: A stopper (14) is fixedly connected to the upper end surface of the lifting plate (1).

5. The PCB board positioning structure according to claim 4, characterized in that: A reinforcing plate (15) is fixedly connected between the stop block (14) and the connecting plate (2).

6. The PCB board positioning structure according to claim 1, characterized in that: A buffer plate (16) is provided on the inner side of the baffle (11); a side surface of the buffer plate (16) is fixedly connected to a limiting column (17); the limiting column (17) is slidably connected to the baffle (11); and a spring (18) is sleeved on the limiting column (17) between the baffle (11) and the buffer plate (16).

7. The PCB board positioning structure according to claim 1, characterized in that: A fixed bracket (19) is fixedly connected to the inner side of the limit frame (3), a motor (20) is fixedly connected to the fixed bracket (19), and an output end of the motor (20) is fixedly connected to the first gear (6) and the second gear (8).

8. An encoder, characterized in that It comprises the PCB board positioning structure as described in any one of claims 1-7.

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