PCB (Printed Circuit Board) surface mounting device

Abstract

The utility model discloses a PCB surface mounting device. The PCB surface mounting device comprises a base, wherein the base is provided with an upper surface and a hollow part; two opposite base grooves are formed in the surface of the base; the four supporting plates are arranged on the surfaces of the two ends of the two foundation trenches in a pairwise opposite mode correspondingly. The two bearing rotating pieces are fixedly installed on the surface, away from the base, of the supporting plate, and the two ends of the two shaft rods are rotationally connected with the bearing rotating pieces; one side of the transmission mechanism is connected to the shaft rod in a penetrating manner and is placed at the top of the hollow part; the lower surface of the pressing plate sleeves the transmission mechanism; one end of the tension spring penetrates through and is connected to the pressing plate, and the other end sleeves the surface of the shaft rod; through the transmission mechanism and the pressing plate, the PCB can be quickly transferred from one process link to the next link in a short time, can be quickly conveyed to the chip mounting area from the feeding area, and can be quickly conveyed to the detection area or the subsequent processing area after chip mounting is completed, so that the retention time of the PCB on the whole chip mounting production line is greatly shortened through the quick transmission capability, and the production efficiency is improved. And the production efficiency is obviously improved.

Description

Technical Field

[0001] This application relates to the field of PCB board mounting technology, and more particularly to a PCB board mounting apparatus. Background Technology

[0002] PCB surface mount technology (SMD) refers to a manufacturing process in which surface mount components (SMDs) are accurately placed and soldered to designated locations on a printed circuit board (PCB).

[0003] In this process, various types and specifications of SMD components, such as resistors, capacitors, and integrated circuit chips, are first conveyed in an orderly manner through a specialized feeding device. Then, using high-precision placement equipment, such as a placement head, and with the assistance of a vision positioning system or other positioning technologies, these components are precisely picked up and placed on the corresponding pads on the PCB board with extremely high precision, according to the circuit layout and component position information planned in the PCB design documents.

[0004] In the surface mount technology (SMT) process, due to the limitations of traditional techniques, component misalignment and tilting are prone to occur. Once components are misaligned or tilted, the electrical integrity of the PCB board will be damaged, increasing the impedance and interference of signal transmission, reducing the stability and reliability of the circuit. Moreover, on the production line, a large number of PCB boards that are rejected due to quality problems directly reduce the yield rate. Companies have to spend more manpower, resources and time on rework or scrapping, which leads to a sharp increase in production costs and a significant extension of the production cycle. Utility Model Content

[0005] The main purpose of this application is to provide a PCB board mounting device, which aims to solve the technical problem that component misalignment and tilting cause PCB board quality problems, resulting in a lower yield, a sharp increase in production costs, and a significant extension of the production cycle.

[0006] To achieve the above objectives, this application provides a PCB board mounting device, including a base, four support plates, two bearing rotating parts, two shafts, a transmission mechanism, a pressure plate, a tension spring, and a limiting mechanism; wherein, the base surface has two opposing base grooves, and the base grooves are located at both ends of the base along the width direction; the four support plates are respectively disposed opposite each other on the end surfaces of the two base grooves; the two bearing rotating parts are fixedly mounted on the surfaces of the support plates opposite to the base, and the bearing rotating parts have through holes along the width direction of the base; both ends of the two shafts are inserted into the through holes and rotate in conjunction with the bearing rotating parts. The transmission mechanism is connected to the shaft on one side and placed on top of the hollow part, which is a hole opened on the surface of the base and located between the two base grooves; the lower surface of the pressure plate is sleeved on the transmission mechanism; one end of the tension spring is connected to the pressure plate and the other end is sleeved on the surface of the shaft; the limiting mechanism is placed on the upper surface of the base and is slidably connected to the connecting rod of the bearing rotating component; wherein, the bearing rotating component includes two bottom plates respectively disposed on the surfaces of two support plates along the length direction of the base and a top plate disposed on the two bottom plates away from the surface of the base, the top plate is an integrally formed structure and connects the two bottom plates.

[0007] Optionally, the transmission mechanism includes a ratchet, a gear, and a conveyor belt; wherein, one side of the ratchet is connected through to the shaft; the gear is used for the rotation of the shaft; and the conveyor belt is sleeved on the outer arc surface of the ratchet.

[0008] Optionally, the ratchet has a protrusion on its outer arc surface, the conveyor belt has a circular opening at the top of its outer arc surface, the inner arc surface of the circular opening is movably engaged with the protrusion, and the lower surface of the pressure plate is fixedly sleeved on the conveyor belt.

[0009] Optionally, the number of gears is four, and they are symmetrically distributed on the shaft in pairs, with the conveyor belt placed inside the hollow section.

[0010] Optionally, the pressure plate includes a pin hole formed in one end face of the pressure plate and connected to a tension spring, and a lower pressing end set at the front end of the pressure plate and overlapping the surface of the conveyor belt.

[0011] Optionally, the limiting mechanism includes a hinge seat placed at the upper end of the base, a limiting plate rotatably connected to the surface of the hinge seat, and a positioning plate movably connected to the inner wall of the hinge seat via a rotating shaft.

[0012] Optionally, the upper surface of the hinge seat is provided with side ear plates on both sides, the lower surface of the side ear plates is connected to the limiting plate through a rotating shaft, the front end of the limiting plate is provided with a hook-shaped part, and the inner side of the hook-shaped part overlaps with the positioning plate.

[0013] Optionally, the limiting plate and the side ear plate are connected by a nut, and an opening is provided at the bottom of one side surface of the positioning plate, through which a hinge rod is connected.

[0014] Optionally, both sides of the hinge rod are connected through to the inner sidewall of the hinge seat, and a torsion spring is fixedly sleeved between the hinge rod and the hinge seat, with one end of the torsion spring connected to the positioning plate.

[0015] Optionally, the hinge seat has connecting grooves in the side lugs at both ends, the connecting grooves are slidably connected to the bearing rotating parts, and the positioning plate is placed on one side of the conveyor belt.

[0016] This application discloses a PCB board mounting device that, through a transfer mechanism and a pressure plate, can rapidly transfer PCB boards from one process stage to the next in a short time. The PCBs are quickly fed from the feeding area to the mounting area, and after mounting, they are quickly transferred to the inspection area or subsequent processing area. This rapid transfer capability significantly shortens the dwell time of the PCB board on the entire mounting production line, thus significantly improving production efficiency. The limiting mechanism not only accurately and reliably limits the lateral movement of the PCB board during transport, preventing it from deviating from the predetermined transport track due to lateral swaying and ensuring the stability of the transport path, but also provides diverse methods for fixing PCB boards used in subsequent processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall mechanism structure in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the side view of the structure in an embodiment of this application;

[0019] Figure 3 This is a partial structural diagram of the transmission mechanism in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the limiting mechanism in the embodiments of this application;

[0021] Figure 5 This is a top-section structural diagram of an embodiment of this application.

[0022] Reference numerals: 1. Base; 101. Base groove; 102. Hollow part; 2. Support plate; 3. Bearing rotating part; 4. Shaft; 5. Transmission mechanism; 501. Ratchet; 502. Gear; 503. Conveyor belt; 504. Protrusion; 505. Round opening; 6. Pressure plate; 601. Pin hole; 602. Lower pressing end; 7. Tension spring; 8. Limiting mechanism; 801. Hinge seat; 802. Limiting plate; 8021. Hook-shaped part; 803. Positioning plate; 804. Side ear plate; 805. Hinge rod; 806. Torsion spring; 807. Connecting groove.

[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0028] Figure 1 This is a schematic diagram of the overall mechanism structure in the embodiments of this application. Figure 2 This is a schematic diagram of the side view of the structure in an embodiment of this application. Figure 3 This is a partial structural diagram of the transmission mechanism in an embodiment of this application. Figure 4 This is a schematic diagram of the disassembled structure of the limiting mechanism in the embodiments of this application. Figure 5 This is a top-section structural diagram of an embodiment of this application.

[0029] This application provides a PCB board mounting device, such as... Figures 1 to 5 As shown, the PCB board mounting device may include a base 1, a support plate 2, a bearing rotating part 3, a shaft 4, a transmission mechanism 5, a pressure plate 6, a tension spring 7, and a limiting mechanism 8.

[0030] The base 1 has two opposing grooves 101 on its surface, located at both ends of the base 1 along its width. Four support plates 2 are arranged opposite each other on the surfaces of the two grooves 101. Two bearing components 3 are fixedly mounted on the support plates 2 facing away from the base 1, and each bearing component 3 has a through hole along the width of the base 1. Two shafts 4 are inserted into the through holes at both ends and rotatably connected to the bearing components 3. A transmission mechanism 5 is connected to one side of the shaft 4 and placed on top of the hollow section 102. 102 is a hole opened on the surface of the base 1 and located between the two base grooves 101; the lower surface of the pressure plate 6 is sleeved on the transmission mechanism 5; one end of the tension spring 7 is connected through to the pressure plate 6, and the other end is sleeved on the surface of the shaft 4; the limiting mechanism 8 is placed on the upper surface of the base 1 and is slidably connected to the connecting rod of the bearing rotating component 3; wherein, the bearing rotating component 3 includes two bottom plates respectively set on the surfaces of the two support plates 2 along the length direction of the base 1 and a top plate set on the two bottom plates away from the surface of the base 1, the top plate is an integrally formed structure and connects the two bottom plates.

[0031] Specifically, the base 1 has an upper surface and a hollow part 102. The upper surface of the base 1 has two opposing base grooves 101 for placement at the bottom of the PCB placement machine. This part is made of a material with good shock absorption performance. Its design structure fits closely to the bottom contour of the placement machine, which can effectively disperse the pressure and vibration generated during the operation of the equipment and avoid the negative impact of unstable factors caused by external environmental interference or its own mechanical operation on the placement accuracy.

[0032] The support plate 2 is fixedly installed on the surface of the base groove 101 by bolts. The support plate 2 is used to further stabilize the normal operation of the top mounting mechanism.

[0033] Both ends of the shaft 4 are inserted into the bearing rotating part 3 and rotatably connected to drive the entire mechanism to rotate stably around its axis, reducing shaking and deviation, extending the service life of related components, and reducing the maintenance frequency and cost of the equipment.

[0034] according to Figure 1 , Figure 2 and Figure 3As shown, the transmission mechanism 5 is connected to the shaft 4 on one side and placed on the top of the base groove 101. The transmission mechanism 5 is placed on the top of the hollow part 102, thus reserving transportation space for the transmission mechanism 5 and enabling the PCB board to be quickly transferred from one process step to the next in a short time. It is quickly sent from the feeding area to the placement area, and after placement, it is quickly transferred to the inspection area or subsequent processing area. This rapid transmission capability greatly shortens the dwell time of the PCB board on the entire placement production line and significantly improves production efficiency.

[0035] The lower surface of the pressure plate 6 is sleeved on the transmission mechanism 5, so the pressure plate 6 limits the PCB board, thereby providing stability for the transportation process.

[0036] One end of the tension spring 7 is connected to the pressure plate 6, and the other end is sleeved on the surface of the shaft 4. One end of the tension spring 7 is firmly connected to the front end of the pressure plate 6. When it starts to operate under force, the tension spring 7 will be stretched due to the external force. With its own elastic restoring force, it will forcefully pull the front end of the pressure plate 6 downward until it is stably placed on the surface of the PCB board, thereby achieving the effect of applying pressure to the PCB board and playing a positioning and protection role.

[0037] Please combine Figure 1 , Figure 4 and Figure 5 Referring to the reference, the limiting mechanism 8 is placed on the upper surface of the base 1 and is slidably connected to the bearing rotating part 3. The limiting mechanism 8 can provide precise position limitation for the PCB board, ensuring that the PCB board is in a standard and fixed position coordinate before the placement operation. It can effectively limit the displacement of the PCB board in the X and Y axis directions, keeping its deviation within a very small range, ensuring the flatness of the PCB board during the placement process, and improving the overall quality and reliability of the PCB board.

[0038] Specifically, when one of the shafts 4 is driven to rotate, the ratchet 501 connected to it begins to rotate under the transmission action of the linkage rotation. The protrusion 504 provided on the outer arc surface of the ratchet 501 will be embedded into the circular opening 505 opened on the surface of the conveyor belt 503. In this way, during the continuous and stable rotation of the ratchet 501, the conveyor belt 503 can be smoothly and synchronously driven to operate. The PCB board placed on the top of the conveyor belt 503 can be smoothly transferred from one process link to the next link, realizing the orderly transfer of the PCB board on the production line.

[0039] Meanwhile, a pressure plate 6 is also provided on the top of the PCB board. When the PCB board moves with the conveyor belt 503, one end of the tension spring 7 is connected to the shaft 4, which remains stationary, and the other end is connected to the pressure plate 6. Since the pressure plate 6 moves with the conveyor belt 503, no matter whether the PCB board moves along the X or Y direction, there will always be two pressure plates 6 under the traction force of the tension spring 7. Their front ends will gradually move downward until they are stably placed on the surface of the PCB board. This can effectively assist in positioning and fixing the PCB board and ensure the stability of the PCB board during movement.

[0040] Only when the PCB board moves to the top of the base groove 101, since the tension springs 7 on the periphery are not stretched, the pressure plate 6 no longer overlaps the PCB board, thus leaving the necessary space for subsequent processing or operation of the PCB board in the base groove 101 area, ensuring the smoothness and continuity of the entire PCB board mounting production process.

[0041] Based on the above, the PCB board will be placed inside the base groove 101, and space is reserved in the middle for the surface mount technology (SMT) to facilitate subsequent SMT operations. Hinges 801 are provided on both sides of the base groove 101, and the connecting grooves 807 therein can achieve flexible and arbitrary movement at the connection position of the bearing rotating part 3. Adaptive adjustments can be made according to the actual size of the PCB board. It can achieve symmetrical clamping to ensure that the PCB board is subjected to uniform and stable force in the horizontal direction, and can also perform diagonal clamping under other requirements to meet the requirements of different processes or PCB board shapes.

[0042] Regarding the limiting mechanism, it is mainly achieved by pressing the positioning plate 803 downwards. It's worth noting that torsion springs 806 are equipped on both sides of the bearing. Due to the presence of these torsion springs 806, when the positioning plate 803 is subjected to external force that is not equal to the torque of the torsion springs 806, the positioning plate 803 can still maintain a horizontal state. This characteristic improves the stability and reliability during clamping, effectively avoiding problems such as unstable PCB clamping, displacement, or even damage caused by uneven force. This lays the foundation for subsequent high-precision surface mount technology (SMT) operations on the PCB, strongly ensuring the smooth progress of the entire PCB SMT process and the consistency and reliability of its quality. Simultaneously, the positioning plate 803 can be rotated to be perpendicular to the hinge. In the state of receiving seat 801, during this process, to prevent the torsion spring 806 from completing the reset action, a limiting plate 802 is set at the front end of the positioning plate 803. The hook-shaped part 8021 connected to the front end of the limiting plate 802 tightly abuts against the side end of the positioning plate 803, and the limiting plate 802 is firmly tightened with bolts, effectively avoiding any possible deviation. In this way, when the two positioning plates 803 are symmetrically placed on both sides of the conveyor belt 503, they can not only accurately and reliably limit the lateral direction of the PCB board during the transmission process, preventing the PCB board from deviating from the predetermined transmission track due to lateral shaking, ensuring the stability of its transmission path, but also provide various ways to fix the PCB board to be processed laterally.

[0043] like Figure 3 As shown, the transmission mechanism 5 may also include a ratchet 501 with its middle part connected to the shaft 4, a gear 502 for rotating the shaft 4, and a conveyor belt 503 sleeved on the outer arc surface of the ratchet 501.

[0044] Specifically, the ratchet 501 has a protrusion 504 on its outer arc surface, the conveyor belt 503 has a round opening 505 at the top of its outer arc surface, the inner arc surface of the round opening 505 is movably engaged with the protrusion 504, the lower surface of the pressure plate 6 is fixedly sleeved on the conveyor belt 503, the number of gears 502 is four, and they are symmetrically distributed on the shaft 4 in pairs, and the conveyor belt 503 is placed in the base groove 101.

[0045] Continue according to Figure 3 As shown, the pressure plate 6 may also include a pin hole 601, which is opened in one side end face of the pressure plate 6 and connected to the tension spring 7. The lower pressing end 602 is set at the front end of the pressure plate 6 and overlaps the surface of the conveyor belt 503.

[0046] according to Figure 4 and Figure 5 For reference, the limiting mechanism 8 may also include a hinge seat 801 placed on the upper end of the base 1, a limiting plate 802 rotatably connected to the surface of the hinge seat 801, and a positioning plate 803 movably connected to the inner wall of the hinge seat 801 via a rotating shaft.

[0047] Thus, the limiting plate 802 and the side ear plate 804 are connected by a nut. The bottom of one side surface of the positioning plate 803 is provided with an opening. A hinge rod 805 is connected through the opening on one side of the positioning plate 803. Both sides of the hinge rod 805 are connected through to the inner side wall of the hinge seat 801. A torsion spring 806 is fixedly sleeved between the hinge rod 805 and the hinge seat 801. One end of the torsion spring 806 is connected to the positioning plate 803. The two side ear plates 804 at both ends of the hinge seat 801 are provided with connecting grooves 807. The connecting grooves 807 are slidably connected to the bearing rotating part 3. The positioning plate 803 is placed on one side of the conveyor belt 503.

[0048] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A PCB board taping device, characterized by, The utility model relates to a kind of transmission mechanism and limiting mechanism, including: Base (1), surface is provided with two opposite base groove (101), and the base groove (101) is located two ends of the base (1) along width direction; Four support plates (2) are oppositely arranged respectively in the surface of two base grooves (101) at two ends; Two bearing rotating pieces (3) are fixedly installed on the surface of the support plate (2) away from the base (1), and the bearing rotating piece (3) is provided with a through hole along the width direction of the base (1); Two shaft rods (4) are inserted into the through hole at both ends, and are rotatably connected with the bearing rotating piece (3); Transmission mechanism (5) is connected on the shaft rod (4) on one side, and is placed on the top of hollow part (102), and the hollow part (102) is a hole provided on the surface of the base (1) and located between two base grooves (101); Pressing plate (6) is sleeved on the transmission mechanism (5) on the lower surface; Tension spring (7) is connected to the pressing plate (6) on one end, and is sleeved on the surface of the shaft rod (4) on the other end; Limiting mechanism (8) is placed on the upper surface of the base (1), and is slidably connected with the connecting rod of the bearing rotating piece (3); Wherein, the bearing rotating piece (3) includes two bottom plates arranged respectively on the surface of two support plates (2) along the length direction of the base (1) and a top plate arranged on the surface of two bottom plates away from the base (1), and the top plate is an integral structure and is connected with two bottom plates.

2. The PCB paster device of claim 1, wherein, The transmission mechanism (5) comprises: Ratchet wheel (501) is connected on one side of the shaft rod (4); Gear (502) is used for the rotation of the shaft rod (4); Conveyor belt (503) is sleeved on the outer arc surface of the ratchet wheel (501).

3. The PCB paster device of claim 2, wherein, The outer arc surface of the ratchet wheel (501) is provided with a protruding part (504), the outer arc surface of the conveyor belt (503) is provided with a round mouth (505), the inner arc surface of the round mouth (505) is movably connected with the protruding part (504), and the lower surface of the pressing plate (6) is fixedly sleeved on the conveyor belt (503).

4. The PCB paster device of claim 2, wherein, The number of the gear (502) is four, and two gears are symmetrically distributed on the shaft rod (4) as a group, and the conveyor belt (503) is placed in the hollow part (102).

5. The PCB paster device of claim 4, wherein, The pressing plate (6) comprises: Pin hole (601) is provided in one side end surface of the pressing plate (6), and is connected with the tension spring (7); Lower pressing end (602) is arranged at the front end of the pressing plate (6), and is overlapped on the surface of the conveyor belt (503).

6. The PCB paster device of claim 2, wherein, The limiting mechanism (8) comprises: Hinged seat (801) is placed on the upper end of the base (1); Limiting plate (802) is rotatably connected on the surface of the hinged seat (801); Positioning plate (803) is movably connected on the inner side wall of the hinged seat (801) through a rotating shaft.

7. The PCB paster device of claim 6, wherein, The upper surface of the hinged seat (801) is provided with a side ear plate (804) on both sides, the lower surface of the side ear plate (804) is connected with the limiting plate (802) through a rotating shaft, the front end of the limiting plate (802) is provided with a hook-shaped part (8021), and the inner side of the hook-shaped part (8021) is overlapped with the positioning plate (803).

8. The PCB paster device of claim 7, wherein, The limiting plate (802) is connected with the side lug plate (804) by a nut, and the bottom of the one side surface of the positioning plate (803) is provided with an opening, and the opening on one side of the positioning plate (803) is connected with a hinged rod (805) penetratingly.

9. The PCB paster device of claim 8, wherein, The two sides of the hinged rod (805) are connected to the inner side wall of the hinged seat (801) penetratingly, a torsional spring (806) is fixedly sleeved between the hinged rod (805) and the hinged seat (801), and one end of the torsional spring (806) is connected with the positioning plate (803).

10. The PCB paster device of claim 7, wherein, The two end side lug plates (804) of the hinged seat (801) are provided with connecting grooves (807), the connecting grooves (807) are slidingly connected with the bearing rotating piece (3), and the positioning plate (803) is placed on one side of the conveying belt (503).

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