Circuit board unloading device and welding system

Abstract

The invention discloses a circuit board unloading device and a welding system, the circuit board unloading device is applied to circuit board welding, and the circuit board unloading device comprises a carrier, a jacking assembly and a controller; the carrier comprises a carrier body; the pressing assembly comprises a first hinging piece, an abutting rod and a pressing plate, and the abutting rod is used for pressing or releasing the circuit board; the swing assembly comprises a second hinge piece and a swing rod, and the swing rod is used for driving the second end of the pressing plate to descend so as to lift the first end of the pressing plate; the jacking assembly comprises a jacking rod and a center plate, the jacking rod is used for pushing the second end of the swing rod to ascend, and the center plate is used for penetrating through the through groove and jacking the circuit board; the controller is used for controlling the jacking assembly to act when it is obtained that the carrier moves to the position corresponding to the jacking assembly. The circuit board unloading device is simple in structure, convenient to operate and small in occupied space, the unloading efficiency of the circuit board can be effectively improved, full-automatic unloading of the circuit board is achieved, damage to the circuit board is reduced, and the overall production efficiency of the circuit board is improved.

Description

Technical Field

[0001] The invention relates to circuit board welding, in particular to a circuit board unloading device and a welding system. Background Art

[0002] During the wave soldering process, the PCBA (Printed Circuit Board Assembly) board needs to be fixed by a carrier to ensure the stability of the PCBA board.

[0003] In the related art, the carrier for the PCBA board includes a base plate and a cover plate. A receiving groove is provided on the top surface of the base plate, and the PCBA board is placed in the receiving groove. A clearance groove is provided on the bottom surface of the base plate, and the solder of the wave soldering enters from the clearance groove and contacts the pins on the bottom surface of the PCBA board. The cover plate is pressed on the top of the PCBA board. A screw is provided on the top surface of the base plate. The screw is located at the four corners of the base plate. The screw passes through the cover plate and is slidably connected to the cover plate. A double nut is provided on each screw. The cover plate is located between the two nuts. The upper nut can be turned to remove the cover plate, and the lower nut can be turned to adjust the height of the cover plate, thereby pressing the PCBA board to avoid displacement of the PCBA board. After welding is completed and cooled, the staff will take the cooled PCBA board out of the carrier.

[0004] When taking out the PCBA board, you need to first unscrew the upper nut, then remove the cover plate, and finally take the PCBA board out of the receiving slot. Since the receiving slot is adapted to the shape of the PCBA board and the PCBA board is thin, it is not convenient to take the PCBA board out of the receiving slot. The operator needs to push the PCBA board upward from the other side of the PCBA board through the clearance slot to take the PCBA board out, which reduces the efficiency of unloading and thus reduces the overall production efficiency of the PCBA board.

[0005] Therefore, how to improve the unloading efficiency of PCBA boards is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0006] The object of the present invention is to provide a circuit board unloading device and a welding system, which can improve the unloading efficiency of the circuit board and realize automatic unloading.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A circuit board unloading device includes a carrier, a lifting assembly and a controller; the carrier includes:

[0009] The carrier body is used to carry the circuit board, and a through slot is provided on the carrier body at a position corresponding to the circuit board;

[0010] A clamping assembly is arranged on the carrier body, and the clamping assembly includes a first hinge, a push rod and a pressing plate, wherein the middle part of the pressing plate is hinged on the first hinge, the push rod is installed at the first end of the pressing plate, and the push rod is used to clamp or release the circuit board;

[0011] A swing assembly is arranged on the carrier body, and the swing assembly includes a second hinge and a swing rod, wherein the middle portion of the swing rod is hinged on the second hinge, and the first end of the swing rod is placed above the second end of the pressure plate, and the swing rod is used to drive the second end of the pressure plate to descend so as to lift the first end of the pressure plate;

[0012] In addition, the jacking assembly is located at the unloading position, and the jacking assembly includes a jacking rod and a center plate. The jacking rod is used to push the second end of the rocker arm to rise, and the center plate is used to penetrate the through slot and lift the circuit board. The controller is connected to the jacking assembly, and the controller is used to control the action of the jacking assembly when it is obtained that the carrier moves to a position corresponding to the position of the jacking assembly.

[0013] On the other hand, a threaded portion is provided at one end of the push rod facing away from the carrier body, and a threaded hole is provided at the first end of the pressure plate. The threaded portion of the push rod is adapted to the threaded hole of the pressure plate so that the position of the push rod relative to the pressure plate is adjustable, and / or a buffer pad is provided at one end of the push rod close to the carrier body.

[0014] On the other hand, the jacking assembly also includes a jacking plate and a driving component for driving the jacking plate to rise and fall, and the number of jacking rods is multiple, and the jacking rods and the center plate are both arranged on the jacking plate;

[0015] The controller is connected to the driving component, and is used to control the action of the driving component when it is obtained that the carrier moves to a position corresponding to the jacking component.

[0016] On the other hand, the center plate is located in the middle of the lifting plate, the lifting rod is located at the edge of the lifting plate, the cross-sectional dimension of the center plate is smaller than the cross-sectional dimension of the through slot, and the height of the center plate is greater than the height of the through slot.

[0017] On the other hand, it also includes:

[0018] The conveyor chain is used to move the carrier from the welding device to the unloading position; there are at least two conveyor chains, each of which is provided with a plurality of hooks, the carrier body is located between two adjacent conveyor chains, and a plurality of lifting grooves are provided on the side wall of the carrier body, and the carrier body is detachably connected to the hooks through the lifting grooves.

[0019] On the other hand, the carrier body is provided with a plurality of through holes, which are the same in number as the lifting rods and correspond one to one. The lifting rods can pass through the through holes and push the rocker rods. The carrier body also includes a position detection component located on the lifting rods. Both the conveying chain and the position detection component are connected to the controller. The controller is used to control the conveying chain to stop running when the position detection component obtains that the position of the lifting rod corresponds to the through hole.

[0020] On the other hand, the swing assembly also includes a limit rod, the second hinged part is a support rod, the support rod is installed on the carrier body, the rocker arm is hinged on the support rod, the limit rod is located on the side of the support rod away from the pressure plate, and the limit rod is used to abut against the bottom of the rocker arm when the rocker arm is reset.

[0021] On the other hand, it also includes:

[0022] A rotating assembly is arranged on the carrier body, and the rotating assembly includes a swing seat, a rotating rod and a rotating rod driving assembly. The second hinge is located on the swing seat, the rotating rod is rotatably arranged on the carrier body, the swing seat is installed on the rotating rod, the swing seat is used to drive the pressure plate to rotate in the horizontal direction, and the pressure plate can swing in the vertical direction relative to the swing seat; the rotating rod driving assembly is used to transmit the action of the lifting rod to the rotating rod.

[0023] On the other hand, the second hinge is a rotating shaft arranged on the swing seat, the pressure plate is installed on the rotating shaft, and an elastic reset component is provided between the pressure plate and the rotating shaft. The elastic reset component has a pre-tightening force for driving the first end of the pressure plate to move downward so that the push rod presses the circuit board.

[0024] On the other hand, the rotating rod driving assembly includes a gear support, a first spur gear, a second spur gear, a first bevel gear, a second bevel gear, a synchronous belt and a driving gear;

[0025] The gear support and the second spur gear are both fixed on the carrier body, one end of the first spur gear is mounted on the gear support, and the other end is connected to the first bevel gear; the end of the second spur gear facing away from the carrier body is connected to the second bevel gear;

[0026] The center axis of the first spur gear is horizontally arranged, the center axis of the second spur gear is vertically arranged, the first bevel gear is coaxially connected to the first spur gear, the second bevel gear is coaxially connected to the second spur gear, and the first bevel gear and the second bevel gear are meshed to transmit the rotation of the first spur gear to the second spur gear;

[0027] The driving gear is fixed on the rotating rod and drives the rotating rod to rotate; the synchronous toothed belt is arranged around the second spur gear and the driving gear;

[0028] A tooth surface is provided on the lifting rod, and the tooth surface meshes with the first spur gear. When the lifting rod is lifted and lowered until the tooth surface meshes with the first spur gear, the lifting rod drives the first spur gear to rotate; and a preset distance is provided between the tooth surface and the end face of the lifting rod, so that after the lifting rod pushes the second end of the swing rod to rise a target distance, the tooth surface meshes with the first spur gear.

[0029] On the other hand, it also includes a pressure sensor and a warning component. The pressure sensor is arranged on the center plate, and the pressure sensor is used to obtain the pressure between the circuit board and the center plate; the pressure sensor and the warning component are both connected to the controller, and the controller is used to control the warning component to send a warning signal when the pressure value obtained by the pressure sensor drops to 0.

[0030] The present invention also provides a circuit board soldering system, comprising wave soldering equipment and any one of the circuit board unloading devices described above.

[0031] The circuit board unloading device provided by the present invention has the following beneficial effects: the circuit board is moved from the position of the welding device to the unloading position by means of a carrier, and the lifting assembly is installed on the unloading position. When the carrier moves to the unloading position, it indicates that the circuit board can be unloaded at this time; the carrier comprises a carrier body, a clamping assembly and a swinging assembly; the carrier body is used to carry the circuit board, and a through groove is provided on the carrier body at a position corresponding to the circuit board; the carrier body is also provided with a clearance groove, and the solder of the wave soldering enters from the clearance groove and contacts with the pins on the bottom surface of the circuit board; the clamping assembly is arranged on the carrier body, and the clamping assembly comprises a first hinge, a push rod and a pressure plate, the middle part of the pressure plate is hinged on the first hinge, and the push rod The push rod is installed at the first end of the pressure plate and is used to press or release the circuit board. The lifting and lowering of the first end of the pressure plate drives the push rod to lift and lower. When the first end of the pressure plate descends, the push rod descends to press the circuit board. When the first end of the pressure plate rises, the push rod rises to release the circuit board, so that the circuit board can be easily taken out. This method uses a clamping component to replace the cover plate structure in the related technology, reduces the process of disassembling and assembling the cover plate, and is more convenient to operate. Furthermore, through the setting of the swing component, the swing component is set on the carrier body, and the swing component includes a second hinge and a swing rod. The middle part of the swing rod is hinged on the second hinge. The first end of the swing rod is placed above the second end of the pressure plate. The swing rod is used to drive the second end of the pressure plate. The first end of the pressing plate is lowered, and under the support of the first hinge, the first end of the pressing plate is lifted, thereby lifting the push rod; further, by using the setting of the jacking assembly, the jacking assembly is installed on the unloading position. When the carrier moves to the unloading position, the jacking assembly can play a role at this time, pushing the second end of the swing rod upward, and under the support of the second hinge, the first end of the swing rod moves downward, and the first end of the swing rod pushes the second end of the pressing plate to descend, thereby raising the first end of the pressing plate and raising the push rod, so that the push rod is separated from the circuit board; the jacking assembly includes a jacking rod and a center plate, the jacking rod is used to push the second end of the swing rod to rise, and at the same time, when the jacking rod lifts the swing rod, the center plate penetrates the through slot and lifts the circuit board plate; for the clamping effect between the push rod and the circuit board, a spring can be arranged between the pressure plate and the first hinge, or the weight of the push rod can be used to press the push rod against the circuit board before the lifting assembly takes effect, so as to ensure the stability of the circuit board; further, a controller is arranged, and the controller is connected to the lifting assembly. The controller is used to control the action of the lifting assembly when it is obtained that the carrier moves to a position corresponding to the position of the lifting assembly. The setting of the controller can realize automatic detection of the carrier position, thereby realizing automatic lifting of the push rod and automatic lifting of the circuit board. The staff only needs to remove the circuit board from the carrier body.

[0032] The circuit board unloading device provided by the present invention has a simple structure, is easy to operate, occupies a small space, can effectively improve the unloading efficiency of the circuit board, realize the fully automatic unloading of the circuit board, reduce the damage of the circuit board, and improve the overall production efficiency of the circuit board.

[0033] In one embodiment, by setting up a rotating assembly and utilizing the settings of a swing seat, a rotating rod and a rotating rod driving assembly, the lifting and lowering of the lifting rod can be converted into the rotation of the rotating rod. During the rotation of the rotating rod, the swing seat and the pressure plate are driven to rotate, thereby driving the support rod to move away from the circuit board in the horizontal direction, thereby avoiding the circuit board and making it convenient for the staff to remove the circuit board from the carrier body.

[0034] The circuit board welding system provided by the present invention is provided with the above-mentioned circuit board unloading device. Since the circuit board unloading device has the above-mentioned technical effects, the circuit board welding system provided with the circuit board unloading device should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic structural diagram of a specific implementation of the circuit board unloading device provided by the present invention;

[0037] Figure 2 for Figure 1 A schematic diagram of a partial structure of a circuit board unloading device shown;

[0038] Figure 3 for Figure 2 A schematic structural diagram of the circuit board unloading device from another perspective;

[0039] Figure 4 for Figure 1 The schematic diagram of the principle of the rotating assembly in the circuit board unloading device shown;

[0040] Figure 5 for Figure 1 The schematic diagram of the structure of the rotating assembly in the circuit board unloading device shown in FIG. 1 when the push rod is lifted;

[0041] Figure 6 for Figure 1 A schematic diagram of the top view of the lifting plate in the circuit board unloading device shown;

[0042] Figure 7 This is a schematic diagram of a control system of the circuit board unloading device provided by the present invention.

[0043] Reference numerals:

[0044] Circuit board 100;

[0045] Carrier 1; carrier body 11; through slot 111; lifting slot 112; through hole 113; accommodating slot 114; clamping assembly 12; first hinge 121; push rod 122; pressure plate 123; swing assembly 13; second hinge 131; swing rod 132; limit rod 133; lifting assembly 2; lifting rod 21; center plate 22; lifting plate 23; driving component 24; controller 3; conveyor chain 4; hook 41; position detection component 5; rotating assembly 6; swing seat 61; rotating rod 62; rotating rod driving assembly 63; gear support 631; first spur gear 632; second spur gear 633; ​​first bevel gear 634; second bevel gear 635; synchronous belt 636; driving gear 637; pressure sensor 7; warning component 8; unloading platform 9. DETAILED DESCRIPTION

[0046] The core of the present invention is to provide a circuit board unloading device and a welding system, which can simplify the structure of the carrier and realize automatic lifting of the circuit board with high efficiency.

[0047] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0048] In this implementation, please refer to Figure 1 , Figure 2 and Figure 4 The circuit board unloading device includes a carrier 1, a lifting assembly 2 and a controller 3; the carrier 1 includes:

[0049] The carrier body 11 is used to carry the circuit board 100 , and a through slot 111 is formed on the carrier body 11 at a position corresponding to the circuit board 100 ;

[0050] The clamping assembly 12 is disposed on the carrier body 11. The clamping assembly 12 includes a first hinge 121, a push rod 122 and a pressing plate 123. The middle part of the pressing plate 123 is hinged on the first hinge 121. The push rod 122 is installed at the first end of the pressing plate 123. The push rod 122 is used to clamp or release the circuit board 100.

[0051] The swing assembly 13 is disposed on the carrier body 11. The swing assembly 13 includes a second hinge 131 and a swing rod 132. The middle portion of the swing rod 132 is hinged on the second hinge 131. The first end of the swing rod 132 is placed above the second end of the pressure plate 123. The swing rod 132 is used to drive the second end of the pressure plate 123 to descend so as to lift the first end of the pressure plate 123.

[0052] In addition, the jacking assembly 2 is located at the unloading position, and the jacking assembly 2 includes a jacking rod 21 and a center plate 22. The jacking rod 21 is used to push the second end of the rocker arm 132 to rise, and the center plate 22 is used to penetrate the through slot 111 and lift the circuit board 100; the controller 3 is connected to the jacking assembly 2, and the controller 3 is used to control the action of the jacking assembly 2 when the carrier 1 moves to a position corresponding to the jacking assembly 2.

[0053] Specifically, the circuit board 100 is a PCBA (Printed Circuit Board Assembly) assembly board; the circuit board unloading device can be used in a wave soldering process, and can also be used in other scenarios where the circuit board 100 needs to be separated from the carrier 1.

[0054] The first hinge 121 and the second hinge 131 can be rod-shaped or plate-shaped. The clamping assembly 12 and the swinging assembly 13 are both arranged on the top surface of the carrier body 11. The circuit board 100 is moved from the position of the welding device to the unloading position by the carrier 1. The lifting assembly 2 is installed on the unloading position. When the carrier 1 moves to the unloading position, it means that the circuit board 100 can be unloaded at this time. The carrier 1 includes a carrier body 11, a clamping assembly 12 and a swinging assembly 13. The carrier body 11 is used to carry the circuit board 100. A through groove 111 is opened at a position corresponding to the circuit board 100 on the carrier body 11. Specifically, a receiving groove 114 for placing the circuit board 100 is provided in the middle of the surface of the carrier body 11, and a through groove 111 is provided through the middle of the receiving groove 114. The size of the through groove 111 is smaller than the size of the receiving groove 114. A mounting surface is provided on the periphery of the surface of the carrier body 11, and the clamping assembly 12 and the swing assembly 13 are both arranged on the mounting surface. The arrangement of the mounting surface can prevent the clamping assembly 12 and the swing assembly 13 from interfering with the disassembly and assembly of the circuit board 100; the carrier body 11 is also provided with a clearance groove, and the solder of the wave soldering enters from the clearance groove and contacts with the pins on the bottom surface of the circuit board 100; the clamping assembly 12 The pressing assembly 12 is arranged on the carrier body 11, and includes a first hinge 121, a push rod 122 and a pressing plate 123. The middle part of the pressing plate 123 is hinged on the first hinge 121, and the push rod 122 is installed on the first end of the pressing plate 123. The push rod 122 is used to press or release the circuit board 100. The lifting and lowering of the first end of the pressing plate 123 drives the lifting and lowering of the push rod 122. When the first end of the pressing plate 123 descends, the push rod 122 descends to press the circuit board 100. When the first end of the pressing plate 123 rises, the push rod 122 rises to release the circuit board 100, so that the circuit board 100 can be easily taken out. This method is convenient for The clamping assembly 12 replaces the cover plate structure in the related art, which reduces the process of disassembling and assembling the cover plate and makes the operation more convenient. Furthermore, the swing assembly 13 is arranged on the carrier body 11, and the swing assembly 13 includes a second hinge 131 and a rocker arm 132. The middle part of the rocker arm 132 is hinged on the second hinge 131, and the first end of the rocker arm 132 is placed above the second end of the pressure plate 123. The rocker arm 132 is used to drive the second end of the pressure plate 123 to descend. Under the support of the first hinge 121, the first end of the pressure plate 123 is lifted, thereby lifting the push rod 122.

[0055] Further, by utilizing the setting of the jacking assembly 2, the jacking assembly 2 is installed on the unloading position. When the carrier 1 moves to the unloading position, the jacking assembly 2 can play a role and push the second end of the swing rod 132 upward. Under the support of the second hinge 131, the first end of the swing rod 132 moves downward, and the first end of the swing rod 132 pushes the second end of the pressure plate 123 to descend, so that the first end of the pressure plate 123 rises, and the push rod 122 rises, so that the push rod 122 is separated from the circuit board 100; the jacking assembly 2 includes a jacking rod 21 and a center plate 22. The jacking rod 21 is used to push the second end of the swing rod 132 upward. The driving of the jacking rod 21 can be achieved by a cylinder. At the same time, when the jacking rod 21 lifts the swing rod 132, the center plate 22 penetrates the through slot 111 and lifts the circuit board 100; The clamping effect between the push rod 122 and the circuit board 100 can be achieved by setting a spring between the pressure plate 123 and the first hinge 121, or by using the weight of the push rod 122. Before the lifting assembly 2 takes effect, the push rod 122 can be pressed against the circuit board 100 to ensure the stability of the circuit board 100. Furthermore, a controller 3 is set, and the controller 3 is connected to the lifting assembly 2. The controller 3 is used to control the action of the lifting assembly 2 when the carrier 1 moves to a position corresponding to the lifting assembly 2. The setting of the controller 3 can realize automatic detection of the position of the carrier 1, thereby realizing automatic lifting of the push rod 122 and automatic lifting of the circuit board 100. The staff only needs to remove the circuit board 100 from the carrier body 11.

[0056] The circuit board unloading device has a simple structure, is easy to operate, occupies a small space, can effectively improve the unloading efficiency of the circuit board 100, realize the fully automatic unloading of the circuit board 100, reduce the damage of the circuit board 100, and improve the overall production efficiency of the circuit board 100.

[0057] In some embodiments, a threaded portion is provided at one end of the push rod 122 facing away from the carrier body 11, and a threaded hole is provided at the first end of the pressure plate 123. The threaded portion of the push rod 122 is adapted to the threaded hole of the pressure plate 123, so that the position of the push rod 122 relative to the pressure plate 123 is adjustable, thereby adapting to circuit boards 100 of different thicknesses and improving the scope of application; of course, the position adjustment between the push rod 122 and the carrier body 11 can also be achieved by other means, such as by providing a rubber ring on the push rod 122, and then providing an assembly hole on the pressure plate 123, and using the friction force of the rubber ring to limit the push rod 122, and the position of the push rod 122 can also be adjusted.

[0058] In some embodiments, a buffer pad is disposed at one end of the support rod 122 close to the carrier body 11 to reduce wear on the circuit board 100 .

[0059] In some embodiments, the lifting assembly 2 further includes a lifting plate 23 and a driving component 24 for driving the lifting plate 23 to rise and fall. There are multiple lifting rods 21, and the lifting rods 21 and the center plate 22 are both arranged on the lifting plate 23; for example, the lifting plate 23 is square, and the four corners of the lifting plate 23 are fixedly connected with the lifting rods 21, and the four corners of the carrier body 11 are provided with through holes 113 for the lifting rods 21 to pass through. When the wave soldering conveyor chain 4 moves the carrier body 11 out of the cooling mechanism and is located above the lifting plate 23, and the lifting rods 21 are aligned with the through holes 113, the cylinder drives the lifting plate 23 to rise, and then the lifting rods 21 pass through the through holes 113;

[0060] The controller 3 is connected to the driving component 24. When the controller 3 obtains that the carrier 1 moves to a position corresponding to the lifting assembly 2, the driving component 24 is controlled to operate to ensure that the lifting plate 23 can be lifted in time.

[0061] In some embodiments, the center plate 22 is located in the middle of the lifting plate 23, the lifting rod 21 is located at the edge of the lifting plate 23, the cross-sectional dimension of the center plate 22 is smaller than the cross-sectional dimension of the through groove 111, and the height of the center plate 22 is greater than the height of the through groove 111; this arrangement is to ensure that the center plate 22 can smoothly enter the through groove 111 and lift the circuit board 100 to facilitate the removal of the circuit board 100.

[0062] In some embodiments, please refer to Figure 3 , also includes:

[0063] The conveyor chain 4 is used to move the carrier 1 from the welding device to the unloading position; the number of the conveyor chains 4 is at least two, and each conveyor chain 4 is provided with a plurality of hooks 41. The carrier body 11 is located between two adjacent conveyor chains 4, and a plurality of lifting grooves 112 are provided on the side wall of the carrier body 11. The carrier body 11 is detachably connected to the hooks 41 through the lifting grooves 112. Specifically, a unloading platform 9 is provided on the unloading position, and the unloading position is located at the last station of the wave soldering system of the circuit board 100. A lifting plate 23 is provided on the top surface of the unloading platform 9, and a driving component 24 is provided below the lifting plate 23. The driving component 24 can be a cylinder. When the conveyor chain 4 conveys the carrier 1 and the circuit board 100 to the top of the unloading platform 9, it stops, and the driving component 24 drives the lifting plate 23 to rise; further, the hooks 41 are in a right angle shape, and each hook 41 is arranged at intervals along the extension direction of the conveyor chain 4. Multiple carriers 1 can be transported on the conveyor chain 4 at the same time, thereby improving the welding efficiency of the circuit board 100.

[0064] In some embodiments, a plurality of through holes 113 are provided on the carrier body 11, and the number of through holes 113 is the same as that of the lifting rods 21 and they correspond one to one. The lifting rods 21 can pass through the through holes 113 and push the rocker rods 132. The cross-sectional dimension of the through holes 113 only needs to be slightly larger than the cross-sectional dimension of the lifting rods 21, which not only meets the penetration requirement of the lifting rods 21, but also can guide the movement of the lifting rods 21.

[0065] In some embodiments, please refer to Figure 6 , and also includes a position detection component 5 located on the lifting rod 21. The conveying chain 4 and the position detection component 5 are both connected to the controller 3. The controller 3 is used to control the conveying chain 4 to stop running when the position detection component 5 obtains that the position of the lifting rod 21 corresponds to the through hole 113. The position detection component 5 can be a camera, for example, a camera is set on the top of a certain lifting rod 21.

[0066] In some embodiments, an alarm component is also included. A position detection component 5 is provided on each lifting rod 21. Each position detection component 5 is connected to the controller 3. The alarm component is connected to the controller 3. The controller 3 is also used to control the drive component 24 to start when it is obtained that each position detection component 5 has detected the position information of the corresponding through hole 113; it is also used to control the alarm component to send out an alarm signal when at least one position detection component 5 detects the position information of the corresponding through hole 113 and at least one position detection component 5 does not detect the position information of the corresponding through hole 113; specifically, the alarm component can be set on the unloading platform 9, and the alarm component can be a warning light or a buzzer; by sending out an alarm signal when at least one position detection component 5 detects the position information of the corresponding through hole 113 and at least one position detection component 5 does not detect the position information of the corresponding through hole 113, it can ensure that when each lifting rod 21 corresponds to each through hole 113 one by one, the drive component 24 is started to avoid equipment damage caused by inaccurate positioning of the lifting rod 21 and the through holes 113 on the carrier body 11.

[0067] In some embodiments, the swing assembly 13 also includes a limit rod 133, the second hinge 131 is a support rod, the support rod is installed on the carrier body 11, the rocker arm 132 is hinged on the support rod, and the limit rod 133 is located on the side of the support rod away from the pressure plate 123. The limit rod 133 is used to abut against the bottom of the rocker arm 132 when the rocker arm 132 is reset; when the rocker arm 132 is reset, that is, when the pressure plate 123 is reset, that is, when the abutment rod 122 is pressed tightly against the circuit board 100.

[0068] In some embodiments, it further comprises:

[0069] The rotating assembly 6 is arranged on the carrier body 11. The rotating assembly 6 includes a swing seat 61, a rotating rod 62 and a rotating rod driving assembly 63. The second hinge 131 is located on the swing seat 61. The rotating rod 62 is rotatably arranged on the carrier body 11. The swing seat 61 is installed on the rotating rod 62. The swing seat 61 is used to drive the pressing plate 123 to rotate in the horizontal direction. The pressing plate 123 can swing in the vertical direction relative to the swing seat 61. The rotating rod driving assembly 63 is used to transmit the action of the lifting rod 21 to the rotating rod 62. By setting the rotating assembly 6 as above, the swing seat 61, the rotating rod 62 and the rotating rod driving assembly 63 can convert the lifting of the lifting rod 21 into the rotation of the rotating rod 62. In the process of the rotating rod 62 rotating, the swing seat 61 and the pressing plate 123 are driven to rotate, thereby driving the push rod 122 to move away from the circuit board 100 in the horizontal direction, thereby avoiding the circuit board 100, and facilitating the staff to remove the circuit board 100 from the carrier body 11.

[0070] In some embodiments, the second hinge 131 is a rotating shaft arranged on the swing seat 61, the pressing plate 123 is mounted on the rotating shaft, and an elastic reset component is arranged between the pressing plate 123 and the rotating shaft, and the elastic reset component has a pre-tightening force, which is used to drive the first end of the pressing plate 123 to move downward, so that the push rod 122 presses the circuit board 100; specifically, the elastic part can be a torsion spring, and by using the setting of the elastic reset component, the first end of the pressing plate 123 is subjected to a downward driving force in the initial state, so that the push rod 122 is pressed against the circuit board 100, thereby ensuring the reliability of the circuit board 100; the pressing plate 123 is hinged to the swing seat 61 through the torsion spring, and the torsion spring makes the end of the pressing plate 123 close to the push rod 122 have a downward movement tendency, and the pressing plate 123 can swing until the push rod 122 presses against the circuit board 100, or swing until the push rod 122 is separated from the circuit board 100, so as to avoid friction between the push rod 122 and the circuit board 100 and wear of the circuit board 100 when the rotating rod 62 rotates. .

[0071] In some embodiments, please refer to Figure 5 The rotating rod driving assembly 63 includes a gear support 631, a first spur gear 632, a second spur gear 633, a first bevel gear 634, a second bevel gear 635, a synchronous belt 636 and a driving gear 637. The gear support 631 supports the first spur gear 632 and the first bevel gear 634.

[0072] The gear support 631 and the second spur gear 633 are both fixed on the carrier body 11. One end of the first spur gear 632 is mounted on the gear support 631, and the other end is connected to the first bevel gear 634. The end of the second spur gear 633 facing away from the carrier body 11 is connected to the second bevel gear 635.

[0073] The central axis of the first spur gear 632 is horizontally arranged, the central axis of the second spur gear 633 is vertically arranged, the first bevel gear 634 is coaxially connected to the first spur gear 632, the second bevel gear 635 is coaxially connected to the second spur gear 633, the first bevel gear 634 and the second bevel gear 635 are meshed to transmit the rotation of the first spur gear 632 to the second spur gear 633; ​​specifically, the position of the through hole 113 should correspond to the position of the first spur gear 632, so as to ensure that the lifting rod 21 can mesh with the first spur gear 632 after extending from the through hole 113;

[0074] The driving gear 637 is fixed on the rotating rod 62 and drives the rotating rod 62 to rotate. The driving gear 637 is coaxial with the rotating rod 62. The synchronous toothed belt 636 is arranged around the second spur gear 633 and the driving gear 637, so as to transmit the rotation of the second spur gear 633 to the driving gear 637.

[0075] The lifting rod 21 is provided with a tooth surface, which meshes with the first spur gear 632. When the lifting rod 21 is lifted and lowered to the point where the tooth surface meshes with the first spur gear 632, the lifting rod 21 drives the first spur gear 632 to rotate; and a preset distance is provided between the tooth surface and the end surface of the lifting rod 21, so that after the lifting rod 21 pushes the second end of the swing rod 132 to rise a target distance, the tooth surface meshes with the first spur gear 632; specifically, the top of the lifting rod 21 does not have a tooth surface. When the top of the lifting rod 21 pushes the second end of the swing rod 132 to rise and the first end to fall, so that the push rod 122 swings upward and disengages from the circuit board 100, the tooth surface of the lifting rod 21 meshes with the first spur gear 632 and drives the first spur gear 632 to rotate, thereby ensuring that the push rod 122 swings upward and disengages from the circuit board 100 first, and then the rotating rod 62 rotates, which can avoid the friction between the bottom surface of the push rod 122 and the top surface of the circuit board 100 when the rotating rod 62 rotates, thereby causing damage to the circuit board 100.

[0076] In some embodiments, please refer to Figure 6, and also includes a pressure sensor 7 and a warning component 8. The pressure sensor 7 is arranged on the center plate 22. The pressure sensor 7 is used to obtain the pressure between the circuit board 100 and the center plate 22. The pressure sensor 7 and the warning component 8 are both connected to the controller 3. The controller 3 is used to control the warning component 8 to send a warning signal when the pressure value obtained by the pressure sensor 7 drops to 0. Specifically, the pressure sensor 7 is embedded on the top surface of the center plate 22. When the pressure sensor 7 detects that the pressure change on the center plate 22 is: the pressure increases for a period of time and then decreases to 0, indicating that the circuit board 100 has been removed, the pressure sensor 7 sends a pressure signal to the controller 3, and controls the piston rod of the driving component 24 to shrink synchronously, and the lifting plate 23 automatically drops, thereby improving the automation of unloading and the continuity of the unloading process. Further, the warning component 8 is also used to send a prompt message when the circuit board 100 is lifted, that is, when the stroke of the driving component 24 reaches the maximum stroke, to remind the staff to take the circuit board 100. Of course, the warning component 8 can also be the same component as the alarm component.

[0077] In a specific embodiment, after the lifting rod 21 rises, it contacts the swing rod 132 and lifts the second end of the swing rod 132 upward, so that the first end of the swing rod 132 is pressed downward. Since the pressure plate 123 is connected to the swing seat 61 through a torsion spring, when the swing rod 132 presses the pressure plate 123 downward, the first end of the pressure plate 123 is lifted upward, so that the push rod 122 is separated from the circuit board 100. The length of the two sides of the swing rod 132 relative to the second hinge 131, the length of the side close to the first end is less than the length of the side close to the second end. The length of the side; a limit rod 133 is set below the end of the swing rod 132 away from the pressure plate 123. After the circuit board 100 is taken out, the lifting plate 23 is driven to descend. During the process of the lifting plate 23 descending and resetting, the lifting rod 21 descends, and the swing rod 132 automatically resets under the action of gravity. The limit rod 133 limits the swing rod 132 to keep the swing rod 132 horizontal and stable; a camera is embedded on the top of one of the lifting rods 21 on the far right, and a PLC (Programmable Logic Controller) is designed. Controller, programmable logic controller), when the camera shoots and detects that the lifting rod 21 is aligned with the through hole 113, the conveyor chain 4 stops moving, and then the piston rod of the driving component 24 extends synchronously to control the lifting plate 23 to automatically rise; a sound prompt module can be set in the PLC. When the stroke of the cylinder reaches the maximum, it means that the center plate 22 has pushed the circuit board 100 to the highest point, and the staff can take the circuit board 100. At this time, the control system issues a sound prompt to prompt the staff to take the board body; the driving gear 637 is coaxially connected to the rotating rod 62, and the synchronous toothed belt 636 is meshed with the second spur gear 633 and the driving gear 637 at the same time. After the lifting rod 21 rises, the tooth surface meshes with the first spur gear 632 and drives the first spur gear 632 to rotate, driving the first bevel gear 634 to rotate, driving the second bevel gear 635 to rotate, driving the second spur gear 633 to rotate, and the second spur gear The wheel 633 drives the driving gear 637 to rotate through the synchronous toothed belt 636, thereby driving the rotating rod 62 to rotate, and the rotating rod 62 rotates to the pressure plate 123 so as not to hinder the circuit board 100 from escaping the receiving groove 114; during the process of the lifting plate 23 descending and resetting, the first spur gear 632 reverses, drives the first bevel gear 634 to reverse, drives the second bevel gear 635 to reverse, drives the second spur gear 633 to reverse, drives the driving gear 637 to reverse, thereby resetting the push rod 122, and the carrier 1 can be reused; according to the above process, during the lifting plate 23 rising, the push rod 122 first swings upward to detach from the circuit board 100, and then the rotating rod 62 rotates to drive the pressure plate 123 to rotate outside the receiving groove 114, at this time, the lifting plate 23 continues to rise, and then the center plate 22 contacts the bottom surface of the circuit board 100, when the top surface of the lifting plate 23 contacts the bottom surface of the carrier 1, the center plate 22 has ejected the circuit board 100 to detach from the receiving groove 114;The device does not require the staff to manually remove the upper nut, then disassemble the cover plate, and then push out the circuit board 100. The lifting plate 23 first releases the fixation of the top of the carrier 1 on the circuit board 100 during the rising process, and then automatically pushes the circuit board 100 out of the carrier 1. The staff only needs to take the circuit board 100 directly off the center plate 22, which can quickly unload the circuit board 100 without damaging it, thereby improving the unloading efficiency and the overall production efficiency.

[0078] In addition to the above-mentioned circuit board unloading device, the present invention also provides a circuit board soldering system including the wave soldering equipment and the above-mentioned circuit board unloading device. The wave soldering equipment is located at the welding station. Please refer to the relevant technology for the structure of other parts of the circuit board soldering system, which will not be repeated in this article.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The circuit board unloading device provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A circuit board unloading device, characterized in that: It comprises a carrier (1), a lifting assembly (2) and a controller (3); the carrier (1) comprises: A carrier body (11) is used to carry a circuit board (100), a through slot (111) being provided at a position on the carrier body (11) corresponding to the circuit board (100); A clamping assembly (12) is disposed on the carrier body (11), the clamping assembly (12) comprising a first hinge (121), a push rod (122) and a pressure plate (123), the middle portion of the pressure plate (123) being hinged on the first hinge (121), the push rod (122) being mounted on a first end of the pressure plate (123), and the push rod (122) being used to clamp or release the circuit board (100); a swing assembly (13) disposed on the carrier body (11), the swing assembly (13) comprising a second hinge (131) and a swing rod (132), the middle portion of the swing rod (132) being hinged on the second hinge (131), the first end of the swing rod (132) being disposed above the second end of the pressure plate (123), the swing rod (132) being used to drive the second end of the pressure plate (123) to descend so as to lift the first end of the pressure plate (123); Furthermore, the lifting assembly (2) is located at a discharge position, and the lifting assembly (2) comprises a lifting rod (21) and a center plate (22), wherein the lifting rod (21) is used to push the second end of the swing rod (132) upward, and the center plate (22) is used to penetrate the through slot (111) and lift up the circuit board (100); the controller (3) is connected to the lifting assembly (2), and the controller (3) is used to control the action of the lifting assembly (2) when it is obtained that the carrier (1) moves to a position corresponding to the position of the lifting assembly (2).

2. The circuit board unloading device according to claim 1, characterized in that: A threaded portion is provided at one end of the support rod (122) facing away from the carrier body (11), a threaded hole is provided at the first end of the pressure plate (123), the threaded portion of the support rod (122) is matched with the threaded hole of the pressure plate (123), so that the position of the support rod (122) relative to the pressure plate (123) is adjustable, and / or a buffer pad is provided at one end of the support rod (122) close to the carrier body (11).

3. The circuit board unloading device according to claim 1, characterized in that: The lifting assembly (2) further comprises a lifting plate (23) and a driving component (24) for driving the lifting plate (23) to move upward and downward, the lifting rods (21) are multiple in number, and the lifting rods (21) and the center plate (22) are both arranged on the lifting plate (23); The controller (3) is connected to the driving component (24), and the controller (3) is used to control the driving component (24) to move when it is obtained that the carrier (1) moves to a position corresponding to the lifting component (2).

4. The circuit board unloading device according to claim 3, characterized in that: The center plate (22) is located in the middle of the lifting plate (23), the lifting rod (21) is located at the edge of the lifting plate (23), the cross-sectional dimension of the center plate (22) is smaller than the cross-sectional dimension of the through groove (111), and the height of the center plate (22) is greater than the height of the through groove (111).

5. The circuit board unloading device according to claim 1, characterized in that: Also includes: A conveyor chain (4) is used to move the carrier (1) from the welding device to the unloading position; the number of the conveyor chains (4) is at least two, each of the conveyor chains (4) is provided with a plurality of hooks (41), the carrier body (11) is located between two adjacent conveyor chains (4), a plurality of lifting grooves (112) are provided on the side wall of the carrier body (11), and the carrier body (11) is detachably connected to the lifting hooks (41) via the lifting grooves (112).

6. The circuit board unloading device according to claim 5, characterized in that: The carrier body (11) is provided with a plurality of through holes (113), the number of the through holes (113) being the same as the number of the lifting rods (21) and corresponding to each other, and the lifting rods (21) can pass through the through holes (113) and push the swing rods (132); the carrier body (11) also includes a position detection component (5) located on the lifting rods (21), the conveying chain (4) and the position detection component (5) are both connected to the controller (3), and the controller (3) is used to control the conveying chain (4) to stop running when the position detection component (5) obtains that the positions of the lifting rods (21) and the through holes (113) correspond.

7. The circuit board unloading device according to claim 1, characterized in that: The swing assembly (13) further comprises a limit rod (133); the second hinged member (131) is a support rod, the support rod is mounted on the carrier body (11); the swing rod (132) is hinged on the support rod; the limit rod (133) is located on a side of the support rod away from the pressure plate (123); the limit rod (133) is used to abut against the bottom of the swing rod (132) when the swing rod (132) is reset.

8. The circuit board unloading device according to any one of claims 1 to 7, characterized in that: Also includes: A rotating assembly (6) is arranged on the carrier body (11), and the rotating assembly (6) includes a swing seat (61), a rotating rod (62) and a rotating rod driving assembly (63). The second hinge (131) is located on the swing seat (61), and the rotating rod (62) is rotatably arranged on the carrier body (11). The swing seat (61) is installed on the rotating rod (62). The swing seat (61) is used to drive the pressure plate (123) to rotate in a horizontal direction, and the pressure plate (123) can swing in a vertical direction relative to the swing seat (61); the rotating rod driving assembly (63) is used to transmit the action of the lifting rod (21) to the rotating rod (62).

9. The circuit board unloading device according to claim 8, characterized in that: The second hinged member (131) is a rotating shaft arranged on the swing seat (61), the pressing plate (123) is mounted on the rotating shaft, and an elastic reset component is provided between the pressing plate (123) and the rotating shaft, the elastic reset component having a pre-tightening force for driving the first end of the pressing plate (123) to move downward so that the push rod (122) presses the circuit board (100).

10. The circuit board unloading device according to claim 8, characterized in that: The rotating rod driving assembly (63) comprises a gear support (631), a first spur gear (632), a second spur gear (633), a first bevel gear (634), a second bevel gear (635), a synchronous toothed belt (636), and a driving gear (637); The gear support (631) and the second spur gear (633) are both fixedly mounted on the carrier body (11); one end of the first spur gear (632) is mounted on the gear support (631), and the other end is connected to the first bevel gear (634); the end of the second spur gear (633) facing away from the carrier body (11) is connected to the second bevel gear (635); The central axis of the first spur gear (632) is arranged horizontally, the central axis of the second spur gear (633) is arranged vertically, the first bevel gear (634) is coaxially connected to the first spur gear (632), the second bevel gear (635) is coaxially connected to the second spur gear (633), and the first bevel gear (634) and the second bevel gear (635) are meshed to transmit the rotation of the first spur gear (632) to the second spur gear (633); The driving gear (637) is fixed on the rotating rod (62) and drives the rotating rod (62) to rotate; the synchronous toothed belt (636) is arranged around the second spur gear (633) and the driving gear (637); The lifting rod (21) is provided with a tooth surface, and the tooth surface meshes with the first spur gear (632). When the lifting rod (21) is lifted or lowered until the tooth surface meshes with the first spur gear (632), the lifting rod (21) drives the first spur gear (632) to rotate; and a preset distance is provided between the tooth surface and the end surface of the lifting rod (21), so that after the lifting rod (21) pushes the second end of the swing rod (132) to rise a target distance, the tooth surface meshes with the first spur gear (632).

11. The circuit board unloading device according to any one of claims 1 to 7, characterized in that: It also comprises a pressure sensor (7) and a warning component (8), wherein the pressure sensor (7) is arranged on the central plate (22), and the pressure sensor (7) is used to obtain the pressure between the circuit board (100) and the central plate (22); the pressure sensor (7) and the warning component (8) are both connected to the controller (3), and the controller (3) is used to control the warning component (8) to send out a warning signal when the pressure value obtained by the pressure sensor (7) drops to 0.

12. A circuit board soldering system, comprising a wave soldering device and a circuit board unloading device, characterized in that: The circuit board unloading device is the circuit board unloading device according to any one of claims 1 to 11.

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