PCB turnover mechanism

Abstract

The utility model discloses a PCB turnover mechanism which comprises a substrate, a driving shaft is arranged above the substrate, the two ends of the driving shaft are fixed on the substrate through bearing seats, the driving shaft is fixedly connected with the long edge of a turnover plate through bolts in a locking mode, an air path is arranged in the turnover plate, a suction nozzle communicated with the air path is arranged on the turnover plate, and the suction nozzle is connected with the air path. A positioning assembly for limiting the PCB is arranged on the turnover plate; and one side of the driving shaft is provided with a turnover driving device driven by a gear and a rack. A plurality of suction nozzles and positioning assemblies are arranged on the overturning plate, so that the PCB is prevented from position deviation in the overturning process; the gear screw rod driven by the cylinder is adopted for transmission, the structure is simple, and maintenance is convenient; and the driving shaft and the long edge of the turnover plate are fixed together, so that the PCB span can be stably turned over by 180 degrees.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit board (PCB) production equipment, and particularly relates to a PCB flipping mechanism. Background Art

[0002] PCB (Printed Circuit Board) is a basic component widely used in various electronic related products. It is a substrate that carries electronic components and connects components. During the assembly process, the existing PCB needs to be flipped 180° to meet the back-end processing requirements.

[0003] The current PCB flipping mechanism, such as the Chinese utility model patent CN218878584U, drives the flip plate to flip 180 degrees through a flipping drive device. However, the flipping is prone to the problem of not flipping in place, and the PCB is prone to offset when it is flipped by gravity. At the same time, the flipping structure simply realizes flipping in place and does not have the function of spanning.

[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0005] The utility model aims to provide a PCB flipping mechanism, which can smoothly flip the PCB span by 180 degrees through the improvement of the existing flipping mechanism.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A PCB flipping mechanism comprises a base plate, a driving shaft is arranged above the base plate, two ends of the driving shaft are fixed to the base plate through bearing seats, the driving shaft is locked and connected to the long side of the flip plate by bolts, an air circuit is built into the flip plate, a suction nozzle connected to the air circuit is arranged on the flip plate, a positioning component for limiting the PCB is arranged on the flip plate; a flip driving device driven by a gear rack is arranged on one side of the driving shaft.

[0008] Furthermore, the flipping drive device includes a flipping cylinder fixed on a base plate, the piston rod of the flipping cylinder is connected to an adjusting plate, the adjusting plate is slidably arranged on a linear slide rail on the base plate, a gear is arranged on the driving shaft, a rack is arranged on the adjusting plate, and the gear and the rack are meshed for transmission.

[0009] Furthermore, the length of the rack is greater than half the circumference of the gear, and limiting bolts are provided at both ends of the flip plate away from the driving shaft; and a stopper corresponding to the limiting bolts is provided on the base plate.

[0010] Furthermore, a hard stopper for limiting the moving range of the adjustment plate is arranged on the base plate.

[0011] Further, the substrate has a discharge position, and a discharge shift column and a first positioning cylinder are provided at the discharge position. The first positioning cylinder is inverted and fixed on the substrate. When the piston rod of the first positioning cylinder is extended, its height is higher than the height of the discharge shift column. When the piston rod of the first positioning cylinder is retracted, its height is lower than the height of the discharge shift column. The end of the piston rod of the first positioning cylinder is a boss structure, and the boss structure can be embedded and engaged in the corresponding positioning hole of the PCB.

[0012] Furthermore, the number of the discharge shifting posts is three, which are distributed in a triangular shape on both sides of the discharge position; the number of the first positioning cylinders is four, which are distributed in a rectangular shape on both sides of the discharge position.

[0013] Furthermore, the positioning assembly includes a plurality of flap shifting posts fixed on the flip plate and a second positioning cylinder, wherein the height of the piston rod of the second positioning cylinder is higher than the height of the flap shifting posts when the piston rod is extended, and the height of the piston rod of the second positioning cylinder is lower than the height of the flap shifting posts when the piston rod is retracted.

[0014] Furthermore, the flip plate is provided with positioning pins, and the positioning pins are fixed to the flip plate through a bracket.

[0015] Furthermore, a slide assembly is provided below the substrate to drive the substrate to move forward and backward.

[0016] Further, the slide assembly includes a base plate and a slide, the base plate is provided with a pair of parallel linear slide rails, and the slide is slidably arranged on the linear slide rails through a slider; a top-feeding cylinder is installed at one end of the base plate through a cylinder seat, and the piston rod end of the top-feeding cylinder is fixed on the slide, and a hard limiter is provided at the other end of the base plate; the slide and the base plate are connected by a fixed column.

[0017] The above technical solution has the following beneficial effects: by arranging a number of suction nozzles and positioning components on the flip plate, the PCB will not be shifted during the flipping process; the gear screw transmission driven by a cylinder has a simple structure and is easy to maintain; the drive shaft is fixed together with the long side of the flip plate, so that the PCB span can be smoothly flipped 180°. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 This is a schematic diagram of the first state structure provided by the utility model.

[0021] Figure 2 This is a schematic diagram of the second state structure provided by the utility model.

[0022] Figure 3 This is a schematic diagram of the flip plate and its surrounding structure provided by the utility model.

[0023] In the figure: 1-base plate; 2-driving shaft; 3-flip plate; 31-limiting bolt; 4-suction nozzle; 5-flip plate shift column; 6-second positioning cylinder; 7-positioning pin; 8-flip cylinder; 9-adjusting plate; 10-linear guide rail; 11-gear; 12-rack; 13-shifter; 14, 20-hard limiter; 15-discharging shift column; 16-first positioning cylinder; 17-bottom plate; 18-slide; 19-top cylinder; 21-fixed column. DETAILED DESCRIPTION

[0024] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0025] See also Figure 1-Figure 3As shown, a PCB flip mechanism includes a base plate 1, which can move forward and backward under the drive of a slide assembly. A driving shaft 2 is provided above the base plate 1, and both ends of the driving shaft 2 are fixed to the base plate 1 through bearing seats. The driving shaft 2 is connected to the long side of a flip plate 3 by bolts, so that the flip plate 3 flips with the rotation of the driving shaft 2. A flip driving device with a gear rack drive is provided on one side of the driving shaft 2, and the flip driving device can drive the driving shaft 2 to rotate clockwise or counterclockwise.

[0026] In this embodiment, the flip plate 3 has positioning and adsorption functions for the PCB placed thereon. Specifically, the flip plate 3 is built with an air circuit, and the air circuit has an air inlet end on the flip plate 3, and an air circuit connector is installed at the air inlet end. The air circuit connector is connected to an external vacuum pumping device through an air pipe. A suction nozzle 4 connected to the air circuit is provided on the flip plate 3, and the suction nozzle 4 is composed of multiple nozzles and evenly distributed on the flip plate 3. A positioning component for limiting the PCB is provided on the flip plate 3. The positioning component is used to clamp and position the PCB, which can prevent the PCB from shifting during the flipping process.

[0027] Specifically, the positioning assembly includes a plurality of flap shifting posts 5 and a second positioning cylinder 6 fixed on the flip plate 3. When the piston rod of the second positioning cylinder 6 is extended, its height is higher than the height of the flap shifting posts 5. When the piston rod of the second positioning cylinder 6 is retracted, its height is lower than the height of the flap shifting posts 5. The piston rod end of the first positioning cylinder 6 is a boss structure, and the boss structure can be embedded and engaged in the corresponding positioning hole of the PCB. With the above structure, when it is necessary to flip, the flip plate 3 rotates clockwise to the position, and the flip plate 3 is above the PCB. The second positioning cylinder 6 is started, and the piston rod thereon extends out and engages in the corresponding positioning hole of the PCB, so that the position between the flip plate 3 and the PCB is positioned. Combined with the adsorption of the suction nozzle 4, it is ensured that the flip plate 3 has sufficient adsorption force to adsorb the PCB, and it is ensured that it will not deviate during the flipping process. When the piston rod of the second positioning cylinder 6 is retracted, the flap shifting posts 5 can provide support for the PCB.

[0028] Preferably, for some PCBs with raised shapes, positioning pins 7 can be provided on the flip plate, and the positioning pins 7 are placed in the corresponding raised shapes to provide support. The positioning pins 7 are fixed to the flip plate 3 through a bracket.

[0029] In this embodiment, the flip driving device adopts a gear rack transmission driven by a cylinder, and the overall structure is simple and easy to maintain on site. Specifically, the flip driving device includes a flip cylinder 8 fixed on a base plate 1, and the piston rod of the flip cylinder 8 is connected to an adjustment plate 9, and the adjustment plate 9 is slidably arranged on a linear slide rail 10 on the base plate. A gear 11 is arranged on the driving shaft 2, and a rack 12 is arranged on the adjustment plate 9, and the gear 11 and the rack 12 are meshed and transmitted.

[0030] The flipping angle of the flip plate 3 in this embodiment is 180°, so the gear 11 and the rack 12 need to meet the flipping requirements of the flip plate 3. Specifically, the length of the rack 12 is greater than half the circumference of the gear 11 to ensure that the flip plate 3 flips 180°. At the same time, in order to prevent the flip plate 3 from over-flipping, limit bolts 31 are provided at both ends of the flip plate 3 away from the drive shaft 2; and a stopper 13 corresponding to the limit bolts is provided on the base plate 1. When in use, the height positions of the limit bolts 31 and the stopper 13 are pre-adjusted to ensure that the flip plate 3 flips 180° after it is flipped into place.

[0031] Furthermore, with respect to the movement range of the adjustment plate 9 , two hard limiters 14 are also provided on the base plate 1 to ensure that the flipping angle of the flip plate 3 is 180°.

[0032] The base plates 1 on both sides of the drive shaft 2 are respectively the material discharge position and the material collection position, wherein the material discharge position is provided with a material discharge stop column 15 and a first positioning cylinder 16, wherein the first positioning cylinder 16 is inverted and fixed on the base plate 1. When the piston rod of the first positioning cylinder 16 is extended, its height is higher than the height of the material discharge stop column 15, and when the piston rod of the first positioning cylinder 16 is retracted, its height is lower than the height of the material discharge stop column 15, and the end of the piston rod of the first positioning cylinder 16 is a boss structure, and the boss structure can be embedded and engaged in the corresponding positioning hole of the PCB. When the piston rod of the first positioning cylinder 16 is retracted, the material discharge stop column 15 can provide support for the PCB.

[0033] In this embodiment, there are three discharge stop posts 15 , which are distributed in a triangle shape on both sides of the discharge position; there are four first positioning cylinders 16 , which are distributed in a rectangular shape on both sides of the discharge position.

[0034] The slide assembly in this embodiment includes a base plate 17 and a slide 18. A pair of parallel linear slide rails are arranged on the base plate 17, and the slide 18 is slidably arranged on the linear slide rails through sliders; a top-loading cylinder 19 is installed at one end of the base plate 17 through a cylinder seat, and the piston rod end of the top-loading cylinder 19 is fixed on the slide 18, and a hard limiter 20 is arranged at the other end of the base plate 17; the slide 18 is connected to the base plate 1 through four fixing columns 21.

[0035] The PCB flipping mechanism in this embodiment sets a number of suction nozzles and positioning components on the flipping plate, so that the PCB will not be offset during the span flipping process, ensuring its safe operation; the gear screw driven by the cylinder has a simple structure and is easy to maintain; the driving shaft is fixed to the long side of the flipping plate to achieve a 180° flip of the PCB span. At the same time, according to different actual application sites, the PCB flipping mechanism has the function of adjusting the position forward and backward, so that it can adapt to various different production environments.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A PCB flipping mechanism, characterized in that: It includes a base plate, a driving shaft is arranged above the base plate, two ends of the driving shaft are fixed on the base plate through bearing seats, the driving shaft is connected to the long side of the flip plate by bolts, an air circuit is built into the flip plate, a suction nozzle connected to the air circuit is arranged on the flip plate, and a positioning component for limiting the PCB is arranged on the flip plate; a flip driving device with a gear rack transmission is arranged on one side of the driving shaft.

2. The PCB flipping mechanism according to claim 1, characterized in that: The flip driving device includes a flip cylinder fixed on a base plate, a piston rod of the flip cylinder is connected to an adjustment plate, the adjustment plate is slidably arranged on a linear slide rail on the base plate, a gear is arranged on the driving shaft, a rack is arranged on the adjustment plate, and the gear and the rack are meshed for transmission.

3. The PCB turning mechanism according to claim 2, characterized in that: The length of the rack is greater than half of the circumference of the gear, and limiting bolts are arranged at both ends of the flip plate away from the driving shaft; and a stopper corresponding to the limiting bolts is arranged on the base plate.

4. The PCB turning mechanism according to claim 3, characterized in that: A hard stopper for limiting the moving range of the adjustment plate is arranged on the base plate.

5. The PCB turning mechanism according to claim 1, characterized in that: The substrate has a discharge position, and a discharge shift column and a first positioning cylinder are provided at the discharge position. The first positioning cylinder is inverted and fixed on the substrate. When the piston rod of the first positioning cylinder is extended, its height is higher than the height of the discharge shift column. When the piston rod of the first positioning cylinder is retracted, its height is lower than the height of the discharge shift column. The end of the piston rod of the first positioning cylinder is a boss structure, and the boss structure can be embedded and engaged in the corresponding positioning hole of the PCB.

6. The PCB turning mechanism according to claim 5, characterized in that: The number of the discharge shifting posts is three, which are distributed in a triangle on both sides of the discharge position; the number of the first positioning cylinders is four, which are distributed in a rectangle on both sides of the discharge position.

7. The PCB turning mechanism according to claim 5, characterized in that: The positioning assembly includes a plurality of flap shifting posts fixed on the flip plate and a second positioning cylinder. When the piston rod of the second positioning cylinder is extended, its height is higher than the height of the flap shifting posts. When the piston rod of the second positioning cylinder is retracted, its height is lower than the height of the flap shifting posts.

8. The PCB turning mechanism according to claim 7, characterized in that: The flip plate is provided with a positioning pin, and the positioning pin is fixed on the flip plate through a bracket.

9. The PCB turning mechanism according to claim 1, characterized in that: A slide assembly is arranged below the base plate to drive the base plate to move forward and backward.

10. The PCB turning mechanism according to claim 9, characterized in that: The slide assembly includes a base plate and a slide, the base plate is provided with a pair of parallel linear slide rails, the slide is slidably arranged on the linear slide rails through sliders; a top-feeding cylinder is installed at one end of the base plate through a cylinder seat, the piston rod end of the top-feeding cylinder is fixed on the slide, and a hard limiter is provided at the other end of the base plate; the slide and the base plate are connected by a fixed column.

Images