Automatic alignment assembly of PCB (printed circuit board) collecting machine

Abstract

The utility model discloses an automatic alignment assembly of a PCB collecting machine, and belongs to the field of PCB production. The automatic alignment assembly comprises a base, at least four universal wheels are arranged at the lower end of the base, and a supporting plate is arranged at the upper end of the base and used for stacking PCBs. A first limiting mechanism and a second limiting mechanism are arranged at the upper end of the base to limit the PCB from two mutually perpendicular directions; the first limiting mechanism comprises a baffle fixed to the upper end of the base, the baffle is rotationally connected with a plurality of rollers, a first limiting plate capable of sliding is arranged on the side, back to the baffle, of the supporting plate, the rollers are rotationally connected to the first limiting plate, and the arrangement direction of the rollers is perpendicular to the sliding direction of the first limiting plate. The second limiting mechanism comprises two second limiting plates which slide synchronously and reversely, and the sliding direction of the second limiting plates is perpendicular to the sliding direction of the first limiting plates. Therefore, alignment of the PCBs is achieved, mutual dislocation in the PCB transferring process is prevented, the consistency and accuracy of transferring positions of the PCBs in the follow-up process are prevented from being affected, and even the grabbing stability is prevented from being affected.

Description

Technical Field

[0001] The utility model belongs to the field of PCB production, and in particular relates to an automatic alignment component of a PCB board receiving machine. Background Art

[0002] During the PCB production process, PCBs need to be transported and transferred between different workstations. During this process, a certain number of PCBs are usually stacked using a PCB stacker to facilitate transfer, processing, or use.

[0003] However, after PCBs are stacked, they are prone to misalignment, such as mutual misalignment. This will hinder the automatic grasping of PCBs in subsequent processes. This is because the inconsistent positions of the PCBs affect the success rate and accuracy of automatic grasping. Therefore, it is necessary to ensure the alignment of the stacked PCBs. For this purpose, an automatic alignment component of the PCB receiving machine is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide an automatic alignment component for a PCB board collector, thereby solving the problems in the prior art.

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

[0006] The automatic alignment assembly of the PCB board collector includes a base, with four universal wheels at the lower end of the base and a support plate at the upper end of the base, on which the PCBs are stacked. A first limiting mechanism and a second limiting mechanism are provided at the upper end of the base to limit the PCBs in two perpendicular directions.

[0007] The first limiting mechanism includes a baffle fixed to the upper end of the base, the baffle being rotatably connected to a plurality of rollers, a first limiting plate capable of sliding is provided on the side of the support plate facing away from the baffle, the first limiting plate being rotatably connected to a plurality of rollers, and the arrangement direction of the rollers is perpendicular to the sliding direction of the first limiting plate;

[0008] The second limiting mechanism comprises two second limiting plates that slide synchronously in opposite directions, with the sliding direction perpendicular to that of the first limiting plate. This ensures alignment of the PCBs and prevents misalignment during transfer, which could affect the consistency and accuracy of the PCB's position in subsequent processes and even affect gripping stability.

[0009] Furthermore, the two second limit plates are both slidably connected to the base, two second fixed plates are provided at the lower end of the base, a second screw rod that can rotate is provided between the two second fixed plates, and the two ends of the second screw rod are respectively provided with a first external thread and a second external thread with opposite rotation directions and equal pitches, and the first external thread and the second external thread respectively pass through the two second limit plates and are threadedly connected to them.

[0010] Further, the lead angles of the first external thread and the second external thread are both smaller than the equivalent friction angle.

[0011] Further, a grasping mechanism is provided at the upper end of the base. The grasping mechanism includes a support column rotatably installed at the upper end of the base. An installation plate is fixed to the upper end of the support column. A slider capable of sliding horizontally is provided on the installation plate. A first cylinder is fixed to the lower end of the slider, and a suction cup is fixed to the end of the driving shaft of the first cylinder.

[0012] Further, the slider is slidably connected to the installation plate. Two first fixing plates are provided on the installation plate. A first lead screw capable of rotating is provided between the two first fixing plates. The first lead screw passes through the slider and is threadedly connected thereto.

[0013] Further, the lead angle of the first lead screw is smaller than the equivalent friction angle.

[0014] Further, a dust blowing mechanism is provided on one of the second limiting plates. The dust blowing mechanism includes a connecting block capable of reciprocatingly sliding on the second limiting plate, and the sliding direction is parallel to the sliding direction of the first limiting plate. A flap capable of flipping is provided on the connecting block. A nozzle is provided on the flap. The nozzle is connected to an air pump through a hose. Under the action of the air pump, air is blown to the uppermost PCB.

[0015] Further, the dust blowing mechanism includes two third fixing plates fixed to the second limiting plate. A third lead screw capable of rotating is provided between the two third fixing plates. The connecting block is slidably connected to the second limiting plate. The third lead screw passes through the connecting block and is threadedly connected thereto.

[0016] Further, the lead angle of the third lead screw is smaller than the equivalent friction angle.

[0017] Advantages of the utility model:

[0018] 1. By providing the first limiting mechanism and the second limiting mechanism on the base, the stacked PCBs are limited in two mutually perpendicular directions to achieve alignment, thereby preventing mutual misalignment during the transfer of the PCBs, which affects the consistency and accuracy of the transfer positions of the PCBs in subsequent processes, and even affects the grasping stability.

[0019] 2. By rotatably connecting a plurality of rollers to the first limiting plate and the baffle, after the first limiting mechanism limits the PCB, the second limiting plate can smoothly push the PCB to move when it moves, so as to complete the limiting alignment in the other direction.

[0020] 3. By arranging a dust blowing component on one of the second limiting plates, the upper surface of the PCB is dusted to ensure that the surface of the PCB transferred to the subsequent process is clean enough, preventing dust from falling on the PCB and affecting the quality of subsequent production and processing. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is the overall structural schematic diagram of the alignment component of the present invention;

[0023] Figure 2 is the structural schematic diagram of the base of the present invention;

[0024] Figure 3 is the structural schematic diagram of the grasping mechanism of the present invention;

[0025] Figure 4 is the structural schematic diagram of the first limiting mechanism of the present invention;

[0026] Figure 5 is the structural schematic diagram of the second limiting mechanism of the present invention;

[0027] Figure 6 is the structural schematic diagram of the dust blowing mechanism of the present invention;

[0028] Figure 7 is the structural schematic diagram of the flap of the present invention. Detailed Embodiment

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] As Figure 1 shown, the automatic alignment component of the PCB board receiving machine includes a base 1. The PCBs are stacked on the upper end of the base 1. Four universal wheels are arranged at the lower end of the base 1 to facilitate the transfer of the PCBs on the base 1 and transfer the PCBs to the subsequent process; and brakes are arranged on the universal wheels.

[0031] Of course, the number of casters at the lower end of the base 1 includes but is not limited to four. In some embodiments, the number of casters can also be more than four.

[0032] As Figure 2 shown, a support plate 11 is provided at the upper end of the base 1, and the PCBs are stacked on the upper end of the support plate 11; a grasping mechanism 2 is provided on the base 1 to transfer the PCBs from the production line to the support plate 11 for stacking, and can also transfer the PCBs to subsequent process equipment for subsequent processing;

[0033] As Figure 3 shown, the grasping mechanism 2 includes a support column 21 rotatably installed at the upper end of the base 1. A mounting plate 22 is fixed to the upper end of the support column 21. A slider 23 capable of horizontal sliding is provided on the mounting plate 22. A first cylinder 25 is fixed to the lower end of the slider 23. The end of the drive shaft of the first cylinder 25 is fixed with a suction cup 26 and can drive the suction cup 26 to move up and down. The suction cup 26 can adsorb the PCBs by connecting to an air pump; by controlling the rotation of the support column 21, the sliding of the slider 23, and the lifting of the suction cup 26, the PCBs can be transferred to the upper end of the support plate 11, and the PCBs stacked on the support plate 11 can be transferred to subsequent process equipment;

[0034] In this embodiment, the support column 21 is rotatably connected to the base 1, and a motor is provided at the lower end of the base 1 to directly drive the rotation of the support column 21;

[0035] In this embodiment, the slider 23 is slidably connected to the mounting plate 22. Two first fixing plates 221 are provided on the mounting plate 22. A first lead screw 24 is rotatably connected between the two first fixing plates 221. The first lead screw 24 passes through the slider 23 and is threadedly connected thereto. By providing a motor on one of the first fixing plates 221 to drive the rotation of the first lead screw 24, the slider 23 can be driven to slide; and the first lead screw 24 has self-locking property, that is, the thread lead angle of the first lead screw 24 is less than the equivalent friction angle, to ensure the stability of the slider 23 after position adjustment.

[0036] In some embodiments, the slider 23 can also be directly driven to slide by providing linear drive components such as telescopic rods and hydraulic cylinders on the mounting plate 22.

[0037] A first limiting mechanism 3 and a second limiting mechanism 4 are provided at the upper end of the base 1 to limit the stacked PCBs from two mutually perpendicular directions to achieve alignment; thus preventing mutual dislocation during the transfer of the PCBs, affecting the consistency and accuracy of the transfer positions of the PCBs in subsequent processes, and even affecting the grasping stability;

[0038] As Figure 4As shown in the figure, the first limiting mechanism 3 includes a baffle 31 fixed to the upper end of the base 1. A plurality of rollers 33 are rotatably connected to the baffle 31. On the side of the support plate 11 facing away from the baffle 31, a slidable first limiting plate 32 is provided. A plurality of rollers 33 are also rotatably connected to the first limiting plate 32, and the arrangement direction of the rollers is perpendicular to the sliding direction of the first limiting plate 32. By controlling the first limiting plate 32 to approach the baffle 31, the two opposite sides of the PCB can be brought into contact with the rollers 33 on the baffle 31 and the first limiting plate 32 respectively, and the PCB can be pressed against the rollers on one side of the baffle 31, so as to limit the stacked PCB boards from one direction;

[0039] In this embodiment, a second cylinder is provided at the upper end of the base 1 to drive the first limiting plate 32 to slide, and to realize the first limiting plate 32 approaching or moving away from the baffle 31.

[0040] As Figure 5 shown in the figure, the second limiting mechanism 4 includes two second limiting plates 41 that can slide synchronously in opposite directions. The two second limiting plates 41 are respectively located on the opposite sides of the support plate 11, and the sliding direction is perpendicular to the sliding direction of the first limiting plate 32. When the two second limiting plates 41 approach each other, they can respectively fit with the other two opposite sides of the PCB. Cooperating with the first limiting mechanism 3, the PCB can be limited from two mutually perpendicular directions;

[0041] Moreover, since a plurality of rollers 33 are provided on the baffle 31 and the first limiting plate 32, after the first limiting mechanism 3 limits the PCB, the second limiting plate 41 can smoothly push the PCB to move when moving, so as to complete the alignment in the other direction; it avoids the situation that it is difficult for the second limiting plate 41 to push the PCB to displace and adjust in the other direction after the first limiting mechanism 3 presses the PCB tightly;

[0042] In this embodiment, both of the two second limiting plates 41 are slidably connected to the base 1. Two second fixing plates 12 are provided at the lower end of the base 1. A second lead screw 42 is rotatably connected between the two second fixing plates 12. At both ends of the second lead screw 42, a first external thread 421 and a second external thread 422 with opposite helix directions and equal pitches are provided respectively. The first external thread 421 and the second external thread 422 respectively penetrate through the two second limiting plates 41 and are threadedly connected thereto. By providing a motor on one of the second fixing plates 12 to drive the second lead screw 42 to rotate, the synchronous reverse sliding of the two second limiting plates 41 can be realized;

[0043] And in order to ensure the stability of the positions of the two second limiting plates ills after adjustment, the second lead screw 42 needs to have self-locking property, that is, the helix angles of the first external thread 421 and the second external thread 422 are both smaller than the equivalent friction angle.

[0044] In some embodiments, two cylinders or telescopic rods may also be provided on the base 1 to drive the two second limiting plates 41 to slide synchronously and reversely respectively.

[0045] A dust blowing mechanism 5 is arranged on one of the second limiting plates 41. The dust blowing mechanism 5 can blow dust on the upper surface of the uppermost PCB. After the uppermost PCB is removed, it blows dust on the upper surface of the next PCB, ensuring that the surface of the PCB transferred to the subsequent process is clean enough to prevent dust from falling on the PCB during transportation and affecting the quality of subsequent production and processing.

[0046] Such as Figure 6 As shown, the dust blowing mechanism 5 includes a connecting block 51 that can reciprocate on the second limiting plate 41, and the sliding direction is parallel to the sliding direction of the first limiting plate 32. A flap 52 that can be flipped is arranged on the connecting block 51, and a nozzle 53 is arranged on the flap 52. The nozzle 53 is connected to an air pump through a hose. Under the action of the air pump, it blows air on the uppermost PCB, and as the connecting block 51 reciprocates and the inclination angle of the nozzle 53 is adjusted back and forth, it can blow dust on the entire upper surface of the PCB.

[0047] In this embodiment, the dust blowing mechanism 5 further includes two third fixing plates 54 fixed on the second limiting plate 41. A third lead screw 55 is rotatably connected between the two third fixing plates 54. The connecting block 51 is slidably connected to the second limiting plate 41. The third lead screw 55 passes through the connecting block 51 and is threadedly connected thereto. By arranging a motor on one of the third fixing plates 54 to drive the third lead screw 55 to reciprocate, the reciprocating sliding of the connecting block 51 can be realized; moreover, the third lead screw 55 also has self-locking property, that is, the thread lead angle of the third lead screw 55 is less than the equivalent friction angle.

[0048] In some embodiments, a telescopic rod or a hydraulic cylinder may also be provided on the second limiting plate 41 to directly drive the connecting block 51 to reciprocate.

[0049] Such as Figure 7 As shown, a rotating shaft 521 is arranged on the flap 52. The rotating shaft 521 is rotatably connected to the connecting block 51, and a motor is arranged on the connecting block 51 to directly drive the rotating shaft 521 to rotate, so as to realize the flipping adjustment of the flap 52 around the rotating shaft 521.

[0050] In this embodiment, the working process of using the grasping mechanism 2 to move the stacked PCBs to the subsequent process is as follows:

[0051] S1, use the dust blowing mechanism 5 to blow dust on the uppermost PCB, then control the second limiting plate 41 and the first limiting plate 32 to move away from the PCB, and then control the grasping mechanism 2 to grasp the uppermost PCB and transfer it to the subsequent process equipment.

[0052] S2. Then, control the first limiting plate 32 and the second limiting plate 41 to approach the stacked PCBs successively to complete alignment again (to prevent the misalignment of the underlying PCBs during the clamping process).

[0053] S3. Repeat operations S1 - S2 to complete the unloading and transfer of all PCBs.

[0054] Working principle:

[0055] By providing the first limiting mechanism 2 and the second limiting mechanism 3 on the base 1, the stacked PCBs are limited in two mutually perpendicular directions to achieve alignment, thereby preventing mutual misalignment during the PCB transfer process, which may affect the consistency and accuracy of the transfer position of the PCBs in subsequent processes and even the grasping stability. By rotatably connecting a plurality of rollers 33 to the first limiting plate 32 and the baffle 31, after the first limiting mechanism 3 limits the PCB, the second limiting plate 41 can smoothly push the PCB to move when it moves to complete the limiting alignment in the other direction. By providing a dust blowing assembly 5 on one of the second limiting plates 41, the upper surface of the PCB is dusted to ensure that the surface of the PCB transferred to the subsequent process is clean enough to prevent dust from falling on the PCB and affecting the quality of subsequent production and processing.

[0056] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0057] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. The automatic alignment component of the PCB receiving machine, including a base (1), and at least four universal wheels are arranged at the lower end of the base (1), characterized in that, A support plate (11) is provided at the upper end of the base (1), and the PCBs are stacked on the upper end of the support plate (11); a first limiting mechanism (3) and a second limiting mechanism (4) are provided at the upper end of the base (1) to limit the PCBs in two mutually perpendicular directions. The first limiting mechanism (3) includes a baffle (31) fixed to the upper end of the base (1). A plurality of rollers (33) are rotatably connected to the baffle (31). A slidable first limiting plate (32) is provided on the side of the support plate (11) facing away from the baffle (31). A plurality of rollers (33) are rotatably connected to the first limiting plate (32), and the arrangement direction of the rollers is perpendicular to the sliding direction of the first limiting plate (32). The second limiting mechanism (4) includes two second limiting plates (41) that slide synchronously and in opposite directions, and the sliding direction is perpendicular to the sliding direction of the first limiting plate (32).

2. The automatic alignment component of the PCB board receiving machine according to claim 1, characterized in that, Both of the two second limiting plates (41) are slidably connected to the base (1). Two second fixing plates (12) are provided at the lower end of the base (1). A rotatable second lead screw (42) is provided between the two second fixing plates (12). First external threads (421) and second external threads (422) with opposite helix directions and equal pitches are respectively provided at both ends of the second lead screw (42). The first external thread (421) and the second external thread (422) respectively penetrate through the two second limiting plates (41) and are threadedly connected thereto.

3. The automatic alignment component of the PCB board receiving machine according to claim 2, characterized in that, The helix angles of the first external thread (421) and the second external thread (422) are both smaller than the equivalent friction angle.

4. The automatic alignment component of the PCB board receiving machine according to claim 1, characterized in that A grasping mechanism (2) is provided at the upper end of the base (1). The grasping mechanism (2) includes a support column (21) rotatably installed at the upper end of the base (1). An installation plate (22) is fixed to the upper end of the support column (21). A slidable slider (23) is provided on the installation plate (22). A first air cylinder (25) is fixed to the lower end of the slider (23). A suction cup (26) is fixed to the end of the driving shaft of the first air cylinder (25).

5. The automatic alignment component of the PCB board receiving machine according to claim 4, characterized in that, The slider (23) is slidably connected to the installation plate (22). Two first fixing plates (221) are provided on the installation plate (22). A rotatable first lead screw (24) is provided between the two first fixing plates (221). The first lead screw (24) penetrates through the slider (23) and is threadedly connected thereto.

6. The automatic alignment component of the PCB board receiving machine according to claim 5, characterized in that, The helix angle of the first lead screw (24) is smaller than the equivalent friction angle.

7. The automatic alignment component of the PCB board receiving machine according to claim 1, wherein A dust blowing mechanism (5) is provided on one of the second limiting plates (41). The dust blowing mechanism (5) includes a connecting block (51) that can reciprocally slide on the second limiting plate (41), and the sliding direction is parallel to the sliding direction of the first limiting plate (32). A flap (52) that can be flipped is provided on the connecting block (51). A nozzle (53) is provided on the flap (52). The nozzle (53) is connected to an air pump through a hose, and under the action of the air pump, air is blown onto the uppermost PCB.

8. The automatic alignment component of the PCB board receiving machine according to claim 7, characterized in that, The dust blowing mechanism (5) includes two third fixing plates (54) fixed on the second limiting plate (41). A rotatable third lead screw (55) is arranged between the two third fixing plates (54). The connecting block (51) is slidably connected to the second limiting plate (41). The third lead screw (55) passes through the connecting block (51) and is threadedly connected thereto.

9. The automatic alignment component of the PCB board receiving machine according to claim 8, characterized in that, The lead angle of the third lead screw (55) is less than the equivalent friction angle.

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