Feeding equipment and feeding method of PCB (Printed Circuit Board)

Abstract

The invention provides a PCB feeding device and a feeding method thereof, and relates to the technical field of feeding, the PCB feeding device comprises a stock bin for placing a PCB, a full stock bin unit for bearing the stock bin, a transfer unit for transferring the stock bin, an empty stock bin unit arranged on one side of the full stock bin unit, and a material taking unit arranged above the empty stock bin unit or the full stock bin unit, the transfer unit can move to any position of the full stock bin unit, the empty stock bin unit and the material taking unit. According to the feeding equipment, full-automatic feeding and discharging of the stock bins are achieved, when the stock bins are fed every time and the first carrying arm sucks the stock bins, the first lifting assembly descends by the height of one stock bin in the vertical direction, at the moment, the first carrying arm places the stock bins on the transfer platform, and it is guaranteed that only one stock bin is placed every time; the situation that multiple stock bins suck at the same time is prevented; in the state that the third carrying arm adsorbs the PCB, correction is completed in advance through the correction unit before feeding, and the feeding precision is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of loading, and particularly relates to a loading device and a loading method for a PCB. Background Art

[0002] In the field of LED liquid crystal panel display manufacturing, a FOB bonder is a production device used to establish a stable mechanical and electrical connection between a printed circuit board (PCB) and a flexible printed circuit (FPC). It adopts technologies such as machine vision alignment and precision motion control, and through anisotropic conductive film (ACF) bonding, it realizes the electrical and mechanical connection of the fine-pitch PCB and FPC under certain hot pressing conditions. Before bonding the PCB and the FPC, the FPC and the glass substrate are connected as a whole; during bonding, the glass substrate and a part of the PCB are adsorbed and fixed, and the exposed part of the PCB is made to correspond to the FPC in the vertical direction, and the lower press head and the upper press head cooperate to complete the bonding.

[0003] Currently, the demand for extra-large glass panels is increasing continuously. Before bonding a relatively large glass panel, it is necessary to load the PCB. In order to improve the beat, after placing multiple PCBs in the magazine, the manipulator uniformly grabs and aligns them and then places them on the main pressing platform.

[0004] For the bonding of extra-large glass panels, the size of the supporting PCB will also increase accordingly, and then the size of the magazine will increase to match the PCB. The existing loading device has a fixed size, which is not conducive to flexibly adapting to the adjustment when the magazine changes; in addition, when loading the magazine, multiple magazines are easily sucked simultaneously due to the electrostatic adhesion force between the magazines, and the full-automatic loading and unloading of the magazine cannot be realized, and the loading position of the PCB is offset. Summary of the Invention

[0005] The present invention proposes a loading device and a loading method for a PCB to solve the technical problems of multiple magazines being sucked simultaneously, the full-automatic loading and unloading of the magazine not being achievable, and the loading position of the PCB being offset in the prior art.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: The present invention provides a loading device for a PCB, which is used for loading the PCB. The characteristics are as follows: it includes a magazine for placing the PCB, a full magazine unit for carrying the magazine, a transfer unit, a picking unit, and an empty magazine unit. The transfer unit can sequentially cycle and switch among the full magazine unit, the picking unit, and the empty magazine unit, take out the magazine from the full magazine unit, transfer it to the picking unit, the picking unit takes out the PCB in the magazine, and then transfers the empty magazine to the empty magazine unit, and the empty magazine unit carries the empty magazine.

[0007] Furthermore, the full bin unit includes a full bin carrier component for carrying bins, a first lifting component, and a first transfer component. The first lifting component vertically lifts the bin on the full bin carrier component upward, and the first transfer component transfers the bin on the first lifting component to the transfer unit.

[0008] Furthermore, the empty bin unit includes an empty bin carrier component for placing empty bins, a second lifting component, and a second transfer component. The second transfer component transfers the empty bin on the transfer unit to the second lifting component, and when empty bins are stacked, the second lifting component descends synchronously.

[0009] Furthermore, the full bin carrier component includes a bin support plate. A loading reference component and a loading auxiliary component are respectively provided on both sides of the full bin carrier component, and the loading auxiliary component is arranged behind the loading reference component; a discharging reference component and a discharging auxiliary component are respectively provided on both sides of the empty bin carrier component. The loading reference component and the discharging reference component are arranged side by side, and the loading auxiliary component and the discharging auxiliary component are arranged side by side. The loading auxiliary component and the discharging auxiliary component include guide plates with adjustable widths arranged face to face, and the loading reference component and the discharging reference component include reference plates with adjustable widths arranged face to face.

[0010] Furthermore, the first transfer component and the second transfer component are arranged side by side in the horizontal direction. The first transfer component includes a first transfer arm and a first transfer driving part, and the second transfer component includes a second transfer arm and a second transfer driving part. A plurality of vacuum suction cups are arranged on both the first transfer arm and the second transfer arm; the first transfer driving part and the second transfer driving part respectively drive the first transfer arm and the second transfer arm to move in the longitudinal direction and / or the vertical direction; the vacuum suction cups can be adjusted horizontally, longitudinally, and in terms of rotation angle.

[0011] Furthermore, the transfer unit includes a transfer platform and a platform driving component for driving the transfer platform to move horizontally. A limiting component is provided on the transfer platform. One set of limiting components is provided in the horizontal and longitudinal directions respectively, and each set has two bin stoppers. In the limiting component, one bin stopper in the horizontal and longitudinal directions is adjustable, and the other bin stopper is fixed.

[0012] Furthermore, the material taking unit includes a third transfer component and a code scanning component. The third transfer component includes a third transfer arm and a third transfer driving part, and the third transfer driving part drives the third transfer arm to move in the horizontal, longitudinal, and vertical directions and perform rotational movement; the scanning end of the code scanning component reads the identification code of the PCB grabbed on the third transfer arm.

[0013] Further, a calibration unit is provided at the rear side of the material taking unit. The calibration unit includes a camera assembly and a camera driving member. The camera assembly moves horizontally through the camera driving member, and the camera assembly shoots the marking points of the PCB on the third transfer arm from bottom to top.

[0014] This application also claims to protect a loading method, which specifically includes the following steps: a. Pull the magazine support plate to the first sensing area through the first plate guide rail, and stack the magazines filled with PCBs on the magazine support plate; b. Push the stacked magazine support plate into the second sensing area; c. The first lifting assembly lifts the stacked magazines on the magazine support plate to the magazine loading position at one time; d. The first transfer driving member drives the first transfer arm to move to the magazine loading position. The first transfer arm descends vertically, and the vacuum suction cup thereon sucks the magazine and ascends vertically to a set height; e. The transfer platform moves to the magazine loading position, and the first transfer arm moves above the transfer platform and places the magazine on the transfer platform; f. The transfer platform carrying the magazine moves to the PCB loading position, and the third transfer arm moves to the PCB loading position and sucks the PCB; g. The barcode scanner scans the identification code on the PCB; h. The third transfer arm moves the PCB to the calibration unit. The camera assembly shoots the marking points of the PCB, and the third transfer arm completes the calibration and places the PCB on the next workbench; i. After all the PCBs in the magazine are calibrated, the transfer platform moves to the magazine unloading position, the second transfer arm sucks the magazine, and the transfer platform moves to the magazine loading position; j. The second transfer arm places the magazine on the second lifting assembly. After the second lifting assembly starts stacking, it descends to the empty magazine support plate and places the magazine on the empty magazine support plate; k. When the empty magazine support plate is stacked with magazines and the magazines are pulled out through the second plate guide rail, the magazine unloading is completed.

[0015] Further, every time the first transfer arm descends to adsorb the uppermost magazine, the first lifting assembly will descend vertically by a height equal to the thickness of one magazine, and before the first transfer arm descends to adsorb again, the first lifting assembly will rise vertically so that the current uppermost magazine reaches the height of the suction position of the first transfer arm.

[0016] Further, every time the second lifting assembly carries a magazine, it descends vertically by a height of one magazine and descends to the third sensing area to sense the second lifting assembly.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a loading device and a loading method for a PCB. The loading device realizes the full-automatic loading and unloading of the magazine. Each time the magazine is loaded, while the first transfer arm sucks the magazine, it descends by the height of one magazine in the vertical direction through the first lifting component. At this time, the first transfer arm then places the magazine on the transfer platform, ensuring that only one magazine is placed each time to prevent the situation of sucking multiple magazines simultaneously; in the state where the third transfer arm adsorbs the PCB, calibration is completed in advance before loading through the calibration unit to ensure the loading accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions proposed by the present invention, the following will be described in detail in conjunction with embodiments and drawings. It should be understood that the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can make changes to these drawings under the concept of the present invention.

[0019] Figure 1 Is the assembly three-dimensional view of the embodiment of the loading device provided by the present invention; Figure 2 Is the rear view of the embodiment of the loading device provided by the present invention; Figure 3 Is the partial assembly three-dimensional view of the full magazine unit and the empty magazine unit provided by the present invention; Figure 4 Is the assembly three-dimensional view of the embodiment of the full magazine unit provided by the present invention; Figure 5 Is the assembly three-dimensional view of the embodiment of the transfer unit provided by the present invention; Figure 6 Is the assembly three-dimensional view of the embodiment of the material taking unit provided by the present invention; Figure 7 Is the assembly three-dimensional view of the embodiment of the code scanning component provided by the present invention; Figure 8 Is the assembly three-dimensional view of the embodiment of the calibration unit provided by the present invention.

[0020] 1. Full bin unit; 10. Upper frame plate; 11. Full bin carrying component; 111. First bracket; 112. First plate guide rail; 113. Bin support plate; 114. Front bin stopper; 115. Rear bin baffle; 12. First lifting component; 13. Feeding auxiliary component; 131. Guide plate; 132. Second profile rack; 133. Adjusting part; 14. Feeding reference component; 141. Reference plate; 142. First profile rack; 151. First conveying arm; 152. First conveying driving part; 153. Vacuum suction cup; 154. Third profile rack; 2. Empty bin unit; 20. Lower frame plate; 21. Empty bin carrying component; 22. Second lifting component; 23. Discharging auxiliary component; 24. Discharging reference component; 3. Transfer unit; 30. Bin; 31. Transfer platform; 32. Platform driving component; 33. Bin stopper; 34. Long groove; 4. Material taking unit; 41. Third conveying arm; 42. Third conveying driving part; 43. Scanning code component; 431. Second bracket; 432. Scanning code gun; 5. Calibration unit; 51. Camera component; 52. Camera driving part. Detailed implementation manner

[0021] Please refer to Figure 1 - Figure 2 In this embodiment, the present invention provides a feeding device for PCBs, which is used for feeding PCBs and includes a bin for placing PCBs, a full bin unit 1 for carrying the bin, a transfer unit 3, a material taking unit 4, and an empty bin unit 2. The transfer unit 3 can cyclically switch among the full bin unit 1, the material taking unit 4, and the empty bin unit 2 in sequence, take out the bin from the full bin unit 1, transfer it to the material taking unit 4, the material taking unit 4 takes out the PCBs in the bin, and then transfers the empty bin to the empty bin unit 2, and the empty bin unit 2 carries the empty bin.

[0022] Please refer to Figure 3 - Figure 4 In this embodiment, the full bin unit 1 includes a full bin carrying component 11 for carrying the bin. The full bin carrying component 11 includes a first bracket 111, a first plate guide rail 112 is provided on the first bracket 111, a bin support plate 113 is provided on the first plate guide rail 112, an adjustable front bin stopper 114 and a rear bin baffle 115 are further provided on the bin support plate 113, and a first sensing area when pulling out and a second sensing area when resetting are respectively provided on the left and right inner sides of the bin support plate 113; The full bin unit 1 further includes a first lifting component 12, which will drive the bin on the bin support plate 113 to perform vertical lifting movement; A feeding reference component 14 and a feeding auxiliary component 13 are respectively provided on both sides of the full bin carrying component 11, and the feeding auxiliary component 13 is provided behind the feeding reference component 14; A first conveying component is further provided above the full bin carrying component 11; The first lifting component 12 for lifting the silo on the full silo bearing component 11.

[0023] The empty silo unit 2 includes an empty silo bearing component 21 for placing the empty silo 30. On both sides of the empty silo bearing component 21, a blanking reference component 24 and a blanking auxiliary component 23 are respectively provided. The feeding reference component 14 and the blanking reference component 24 are arranged side by side, and the feeding auxiliary component 13 and the blanking auxiliary component 23 are arranged side by side. The feeding auxiliary component 13 and the blanking auxiliary component 23 include guide plates 131 with adjustable widths arranged face to face, and the feeding reference component 14 and the blanking reference component 24 include reference plates 141 with adjustable widths arranged face to face. The feeding equipment includes an upper frame plate 10 and a lower frame plate 20, and the feeding auxiliary component 13, the feeding reference component 14, the blanking auxiliary component 23, and the blanking reference component 24 are arranged on the lower frame plate 20.

[0024] Above the empty silo bearing component 21, there is also a second conveying component. The first conveying component and the second conveying component are arranged side by side in the horizontal direction. The first conveying component includes a first conveying arm 151 and a first conveying driving part 152. The second conveying component includes a second conveying arm and a second conveying driving part. The first conveying driving part 152 and the second conveying driving part drive the first conveying arm 151 and the second conveying arm to move in the longitudinal and vertical directions. A plurality of vacuum suction cups 153 are provided on the first conveying arm 151 and the second conveying arm, and the vacuum suction cups 153 can be adjusted horizontally, longitudinally, and in terms of rotation angle. Among them, the first conveying arm 151 includes a third profile frame 154, the vacuum suction cups 153, and fixing parts. The vacuum suction cups 153 are fixed to the third profile frame 154 through the fixing parts. According to the size of the silo, the position distribution of the vacuum suction cups 153 in the horizontal and longitudinal directions is adjusted, and the angle is adjusted to make the vacuum suction cups 153 more stable when adsorbing the silo. The structure and working principle of the second conveying component are the same as those of the first conveying component, and it includes a second conveying arm and a plurality of vacuum suction cups 153, which will not be elaborated here.

[0025] The feeding reference component 14 includes a first profile frame 142, and a reference plate 141 is fixed on the first profile frame 142. The reference plates 141 are arranged face to face. According to the size of the silo, the width between the first profile frames 142 of the feeding reference component 14 or the first profile frames 142 of the blanking reference component 24 can be adjusted so that the width between the reference plates 141 is slightly larger than the horizontal width of the silo. When feeding the silo, when a plurality of silos are irregularly placed on the silo support plate 113, the silos are arranged neatly by the reference plates 141 arranged on both sides of the silo and then the next action is carried out. The structure and working principle of the blanking reference component 24 are the same as those of the feeding reference component, which will not be elaborated here. When discharging the silo, when a plurality of silos are irregularly placed on the empty silo support plate 113, the blanking is completed by the reference plates 141 of the blanking reference component 24.

[0026] The feeding auxiliary component 13 includes a second profile frame 132. The bottom of the second profile frame 132 is fixed to the lower machine frame plate 20. A guide plate 131 is fixed on the second profile frame 132. According to the size of the magazine 30, the width between the guide plates 131 is adjusted to be basically the same as the width of the magazine 30. The structure and working principle of the discharging auxiliary component 23 are the same as those of the feeding auxiliary component 13, and will not be elaborated here. When the magazine 30 is loaded and unloaded, it can be guided and positioned vertically along the guide plate 131 to prevent problems such as skew and dislocation. An adjusting part 133 is provided at the upper end of the second profile frame 132. The adjusting part 133 connects the second profile frame 132 and the upper machine frame plate 10 to assist in adjusting the width between the guide plates 131.

[0027] The empty magazine unit 2 includes an empty magazine carrying component 21, a second lifting component 22, a discharging auxiliary component 23, a discharging reference component 24, and a second conveying component.

[0028] Please refer to Figure 5 as well. The transfer unit 3 includes a transfer platform 31 and a platform driving component 32 that reciprocates linearly. The platform driving component 32 drives the transfer platform 31 to switch between the magazine loading position, the PCB loading position, and the magazine discharging position. Among them, a limiting component is provided on the transfer platform 31. One set of the limiting component is provided in the transverse and longitudinal directions respectively, and each set has two magazine stoppers 33. Among them, the magazine stoppers 33 arranged in the transverse and longitudinal directions are adjustable, and the other magazine stopper 33 is fixed. Specifically, on the transfer platform 31, elongated grooves 34 are provided at the installation positions of the magazine stoppers 33 in the transverse and longitudinal directions. Screws pass through the elongated grooves 34 and are connected to the magazine stoppers 33. Then, when the screws are loosened, the magazine stoppers 33 are moved along the elongated grooves 34, and after the adjustment is in place, the screws are tightened to fix the magazine stoppers 33. Thus, according to the size of the magazine, the magazine stoppers 33 are adjusted through the elongated grooves 34 on the transfer platform 31.

[0029] Please refer to Figure 6 as well. The picking unit 4 includes a third conveying component and a code scanning component 43. The third conveying component includes a third conveying arm 41, a third conveying driving part 42, and a fourth profile frame. The third conveying driving part 42 drives the third conveying arm 41 to perform horizontal, vertical, and rotational movements. The code scanning component 43 includes a second bracket 431. A code scanning gun 432 is provided on the second bracket 431, and the code scanning gun 432 scans the identification code of the PCB on the third conveying arm 41. A plurality of vacuum suction cups 153 are arranged horizontally on the fourth profile frame. According to the size of the PCB, the distribution of the vacuum suction cups 153 on the fourth profile frame is adjusted so that it can stably adsorb and grasp the PCB.

[0030] Please refer to Figure 7, the code scanning assembly 43 includes a second support 431, and a code scanner 432 is provided on the second support 431. According to the size of the PCB, the longitudinal position and orientation of the code scanner 432 are adjusted so that the identification code of the PCB is within the code scanning range of the code scanner 432.

[0031] Before the feeding operation, according to the sizes of PCBs in different batches and the size of the magazine 30 for carrying the PCBs, the magazine support plate 113, the feeding auxiliary assembly 13, the feeding reference assembly 14, the empty magazine support plate 113, the discharging auxiliary assembly 23, the discharging reference assembly 24, the first transfer arm 151, the second transfer arm, and the transfer platform 31 are adjusted; according to the size of the PCB, the third transfer arm 41, the code scanning assembly 43, etc. are adjusted. Among them, a transfer channel is formed on the magazine support plate 113 for the handling part of the first lifting assembly 12 to pass through the transfer channel. For example, one or more large enough notches are formed on the magazine support plate 113 for the bearing part of the first lifting assembly 12 to pass through and lift the magazine 30, but at the same time, there will be no collision or interference with the magazine support plate 113.

[0032] After the above adjustments are completed, the feeding of the PCB is officially started, and the feeding of the PCB includes the following steps: a. The worker grabs the handle on the magazine support plate 113 and pulls the magazine support plate 113 along the first plate-shaped guide rail 112 on the first support 111 to the first induction area, and then stacks the magazine 30 filled with PCBs on the magazine support plate 113. It should be noted that the first induction area is the position where the worker stacks the magazine 30 on the magazine support plate 113. Of course, a height induction or detection device can be set to detect whether the stacking height meets the requirements.

[0033] b. After the magazine 30 is stacked to the required height, the worker grabs the handle and pushes the magazine support plate 113 into the second induction area. A sensor is provided in the second induction area, which can detect the arrival of the magazine support plate 113. Of course, it also includes detecting whether there is a magazine 30 on the magazine support plate 113. Even by calculating the total height of the stacked magazines 30 and the preset thickness of a single magazine 30, the number of stacked magazines 30 is calculated, and the number of the current magazine 30 is calculated through the number of later grasping times or in cooperation with the height data of the sensor.

[0034] c. The bearing part of the first lifting assembly 12 passes through the magazine support plate 113 to lift the magazine 30 to the magazine loading position.

[0035] d. The first transfer driving member 152 drives the first transfer arm 151 to descend vertically, moves to the magazine loading position, the vacuum chuck 153 contacts the surface of the magazine 30, and after sucking the magazine 30 by vacuum, the first transfer driving member 152 drives the first transfer arm 151 to rise vertically.

[0036] e. After the transfer platform 31 moves to the feeding position above the magazine, the transfer platform 31 is exactly located directly below the first transfer arm 151; the first transfer arm 151 moves vertically downward through the first transfer driving member 152, and then the vacuum suction cup 153 releases, placing the magazine 30 on the transfer platform 31.

[0037] f. The transfer platform 31 carrying the magazine 30 moves to the PCB feeding position, and the third transfer arm 41 moves to the PCB feeding position and picks up the PCB in the magazine 30.

[0038] g. The barcode scanner 432 scans the barcode area on the PCB; the barcode area here can use a two-dimensional code or a barcode. Of course, an RFID electronic tag can also be used, and the barcode scanner 432 uses a matching scanner to read the data of the magazine 30.

[0039] h. The third transfer arm 41 moves the PCB to the calibration unit 5, the camera assembly 51 takes pictures of the fiducial points on the PCB, the third transfer arm 41 completes the calibration, and places the PCB on the next unit platform to complete the feeding action; it should be noted that the fiducial points on the PCB are preset with marks of a specific shape for later being captured by the camera assembly 51 according to its specifications and design requirements during the PCB production process, so that the system can identify the position of the PCB and make adaptive adjustments to the grasping position, and then grasp it more accurately.

[0040] i. After all the PCBs in the magazine 30 are fed, the transfer platform 31 moves to the magazine discharging position, and the second transfer assembly drives the second transfer arm to pick up the magazine 30, and the transfer platform 31 switches to the magazine feeding position through the platform driving assembly 32.

[0041] j. At this time, the second lifting assembly 22 is located directly below the second transfer assembly, and the second transfer arm of the second transfer assembly moves vertically downward to place the magazine 30 on the second lifting assembly 22.

[0042] k. When the empty magazines are stacked, the second lifting assembly 22 moves the empty magazines downward in the vertical direction and pulls out the magazine 30 through the second plate-shaped guide rail to complete the discharging of the magazine 30.

[0043] Furthermore, considering that there will be an adsorption force between the stacked bins 30 due to static electricity, when the first transfer arm 151 grabs and moves up the topmost bin 30, the lower bin 30 will be lifted under the action of the adsorption force, resulting in feeding and causing equipment operation failures. Therefore, in this embodiment, it is preferred that when performing step d, the first transfer arm 151 descends in the vertical direction. After the vacuum suction cup 153 adsorbs the bin 30, it will not immediately lift the bin 30 in the vertical direction. While the first transfer arm 151 sucks the bin 30, the first lifting assembly 12 descends by the height of one bin 30 in the vertical direction. After completing the descending action, the first transfer arm 151 continues to rise. When the first transfer arm 151 sucks the next bin 30, the first lifting assembly 12 rises by the height of two bins 30 in the vertical direction. Each time the first transfer arm 151 descends to adsorb the topmost bin 30, the first lifting assembly 12 will descend by the height of one bin 30 in the vertical direction. And before the first transfer arm 151 descends to adsorb again next time, the first lifting assembly 12 will rise vertically so that the current topmost bin 30 reaches the height of the suction position of the first transfer arm 151. While ensuring that the bin 30 can be successfully sucked each time, it prevents the static adhesion force between the bins 30 from causing multiple bins 30 to be fed simultaneously when the first transfer arm 151 adsorbs the bin 30 through the vacuum suction cup 153. The height of the first lifting assembly 12 can be set. When the first lifting assembly 12 descends, except for the bin 30 adsorbed by the first transfer arm 151, the other bins 30 will fall down due to their own weight.

[0044] When performing step j, due to the presence of the second lifting assembly 22, when the second transfer assembly grabs the empty bin 30 on the transfer platform 31 and places it on the bearing end of the second lifting assembly 22 one by one. After each time the bin 30 is borne, the second lifting assembly 22 will descend by the height of the thickness of one bin 30 in the vertical direction until it descends to the third sensing area and senses that the bin 30 on the second lifting assembly 22 reaches the set height, or when the second lifting assembly 22 reaches the preset lowest height (this height can still enable the bearing part of the second lifting assembly 22 to place the bin 30 on the empty bin support plate 113). At this time, the empty bin support plate 113 can be switched to the lower part of the second lifting assembly 22 in advance. The bearing end of the second lifting assembly 22 further descends through the transfer channel provided on the empty bin support plate 113, and the stacked bins 30 will be borne by the empty bin support plate 113. Pull out the empty bin support plate 113 along the second plate-shaped guide rail (with the same structure and working principle as the bin support plate 113) to pull out the bin, thereby completing the discharging of the bin 30, and all the empty bins are taken out without affecting the continuous operation of the equipment, realizing non-stop material replacement.

[0045] Please refer to Figure 8, when performing step h, first, the calibration unit 5 identifies the standard PCB loading state. Before the formal loading, the left and right marking points on the third transfer arm 41 are captured by the camera assembly 51 each time. The camera driver 52 can capture the left or right side first. After calculating the differences in the XYQ directions by comparing with the left and right marking points in the standard PCB loading state, the differences are fed back to the third transfer driver 42, so as to achieve the compensation in the XYQ directions during the movement of the third transfer driver 42.

[0046] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0048] As described above, the above are the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A feeding device for a PCB, used for feeding the PCB, characterized in that: It includes a magazine (30) for placing the PCB, a full-magazine unit (1) for carrying the magazine (30), a transfer unit (3), a pick-up unit (4), and an empty-magazine unit (2). The transfer unit (3) can cyclically switch among the full-magazine unit (1), the pick-up unit (4), and the empty-magazine unit (2) in sequence, take out the magazine (30) from the full-magazine unit (1), transfer it to the pick-up unit (4). The pick-up unit (4) takes out the PCB in the magazine (30), and then transfers the empty magazine (30) to the empty-magazine unit (2), and the empty-magazine unit (2) carries the empty magazine (30).

2. The feeding device for the PCB according to claim 1, wherein, The full-magazine unit (1) includes a full-magazine carrying component (11) for carrying the magazine (30), a first lifting component (12), and a first conveying component. The first lifting component (12) vertically lifts the magazine (30) of the full-magazine carrying component (11) upward, and the first conveying component transfers the magazine (30) on the first lifting component (12) to the transfer unit (3).

3. The feeding device for the PCB according to claim 2, characterized in that, The empty-magazine unit (2) includes an empty-magazine carrying component (21) for placing the empty magazine (30), a second lifting component (22), and a second conveying component. The second conveying component transfers the empty magazine (30) on the transfer unit (3) to the second lifting component (22), and when the empty magazines (30) are stacked, the second lifting component (22) descends synchronously.

4. The feeding device for the PCB according to claim 3, characterized in that, The full-magazine carrying component (11) includes a magazine support plate (113). A loading reference component (14) and a loading auxiliary component (13) are respectively arranged on both sides of the full-magazine carrying component (11), and the loading auxiliary component (13) is arranged behind the loading reference component (14). A unloading reference component (24) and a unloading auxiliary component (23) are respectively arranged on both sides of the empty-magazine carrying component (21). The loading reference component (14) and the unloading reference component (24) are arranged side by side, and the loading auxiliary component (13) and the unloading auxiliary component (23) are arranged side by side. The loading auxiliary component (13) and the unloading auxiliary component (23) include guide plates (131) with adjustable widths arranged face to face, and the loading reference component (14) and the unloading reference component (24) include reference plates (141) with adjustable widths arranged face to face.

5. The feeding device for the PCB according to claim 4, characterized in that, The first transfer component and the second transfer component are arranged side by side in the lateral direction. The first transfer component includes a first transfer arm (151) and a first transfer driving member (152). The second transfer component includes a second transfer arm and a second transfer driving member. A plurality of vacuum suction cups (153) are provided on both the first transfer arm (151) and the second transfer arm. The first transfer driving member (152) and the second transfer driving member respectively drive the first transfer arm (151) and the second transfer arm to move in the longitudinal direction and / or the vertical direction. The vacuum suction cups (153) can be adjusted in the lateral and longitudinal directions and the rotation angle.

6. The feeding device for the PCB according to claim 1, characterized in that, The transfer unit (3) includes a transfer platform (31) and a platform driving component (32) for driving the transfer platform (31) to move in the lateral direction. A limiting component is provided on the transfer platform (31). One set of the limiting components is provided in the transverse and longitudinal directions respectively. Each set has two bin stoppers (33). In the limiting component, one of the bin stoppers (33) in the transverse and longitudinal directions is adjustable, and the other bin stopper (33) is fixed.

7. The feeding device for the PCB according to claim 1, characterized in that, The material taking unit (4) includes a third transfer component and a code scanning component (43). The third transfer component includes a third transfer arm (41) and a third transfer driving member (42). The third transfer driving member (42) drives the third transfer arm (41) to move in the transverse, longitudinal and vertical directions and rotate. The scanning end of the code scanning component (43) reads the identification code of the PCB grabbed on the third transfer arm (41).

8. The feeding device for the PCB according to claim 7, characterized in that, A calibration unit (5) is provided at the rear of the material taking unit (4). The calibration unit (5) includes a camera component (51) and a camera driving member (52). The camera component (51) moves in the lateral direction through the camera driving member (52). The camera component (51) shoots the marking points of the PCB on the third transfer arm (41) from bottom to top.

9. The feeding method of the feeding device according to claim 1, characterized in that Including the following steps: a. Pull the bin support plate (113) to the first induction area through the first plate rail (112), and stack the bin (30) filled with PCBs on the bin support plate (113). b. Push the stacked bin support plate (113) into the second induction area. c. The first lifting component (12) lifts the bins (30) stacked on the bin support plate (113) to the bin loading position at one time. d. The first transfer driving member (152) drives the first transfer arm (151) to move to the bin loading position. The first transfer arm (151) descends in the vertical direction. The vacuum suction cups (153) thereon suck the bin (30) and rise to a set height in the vertical direction. e. The transfer platform (31) moves to the bin loading position. The first transfer arm (151) moves above the transfer platform (31) and places the bin (30) on the transfer platform (31). f. The transfer platform (31) carrying the magazine (30) moves to the PCB loading position, and the third transfer arm (41) moves to the PCB loading position and picks up the PCB. g. The barcode scanner (432) scans the identification code on the PCB. h. The third transfer arm (41) moves the PCB to the calibration unit (5). The camera assembly (51) captures the fiducial points of the PCB. The third transfer arm (41) completes the calibration and places the PCB on the next workbench. i. After all the PCBs in the magazine (30) are calibrated, the transfer platform (31) moves to the magazine unloading position. The second transfer arm picks up the magazine (30), and the transfer platform (31) moves to the magazine loading position. j. The second transfer arm places the magazine (30) on the second lifting assembly (22). After the second lifting assembly (22) starts stacking and then descends to the empty magazine support plate (113), it places the magazine (30) on the empty magazine support plate (113). k. After the empty magazine support plate (113) finishes stacking the magazines (30), the magazine (30) is pulled out through the second plate rail to complete the unloading of the magazine (30).

10. The feeding method according to claim 9, characterized in that Each time the first transfer arm (151) descends to adsorb the uppermost magazine, the first lifting assembly (12) will descend vertically by a height equal to the thickness of one magazine. And before the first transfer arm (151) descends to adsorb again, the first lifting assembly (12) will rise vertically so that the current uppermost magazine reaches the height of the adsorption position of the first transfer arm (151).

11. The feeding method according to claim 10, characterized in that, Each time the second lifting assembly (22) carries the magazine, it descends vertically by a height equal to the height of one magazine and descends to the third sensing area to sense the second lifting assembly (22).

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