PCB substrate assembly line track limiting mechanism

Abstract

The utility model discloses a PCB (printed circuit board) substrate assembly line track limiting mechanism, which is characterized in that two side plates are arranged in parallel, a plurality of conveying rollers are arranged between the side plates, a limiting component mounting gap is reserved between two adjacent conveying rollers, a supporting cross rod is arranged between the side plates and below the limiting component mounting gap, and the supporting cross rod is connected with the conveying rollers. The two ends of the shaft rod are rotationally connected with the side plates, the shaft rod is provided with a plurality of arc-shaped limiting blocking pieces through bolts, supporting rollers are arranged between the adjacent arc-shaped limiting blocking pieces, the lower surface of the arc-shaped limiting blocking piece located in the middle is rotationally connected with an air cylinder through a rotating shaft, and the bottom of the air cylinder is rotationally connected with a supporting transverse rod through a rotating shaft. The limiting assembly is reasonable in structure, when limiting is not needed, through supporting of the supporting rollers, the problem that a PCB substrate falls off at the position of the installation gap of the limiting assembly or is clamped on an assembly line can be solved, and the situation that the PCB substrate is jacked up and falls off can be avoided by adopting the arc-shaped limiting blocking piece and a straight plate limiting structure.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a processing line technology, and specifically to a PCB substrate line track limiting mechanism. Background Art

[0002] Wave soldering is a common method used in the mass production of PCBs in electronic device manufacturing. During the wave soldering process, a wave of molten solder passes through the PCB, creating reliable solder joints between the pads and component pins. This method is highly efficient and suitable for soldering through-hole components.

[0003] When processing PCBs by wave soldering, if the quality has not been confirmed to be ready for production or if major or batch defects are found at the back end, the assembly line track needs to forcibly intercept the PCB substrate before it enters the wave soldering furnace. In the prior art, when the above situation occurs, the PCB substrate is manually intercepted using a limit device before entering the wave soldering. This interception method increases labor costs and has poor timeliness. Alternatively, a limit mechanism is used for interception. The limit mechanism in the prior art uses a vertical lifting of a vertical plate for interception. However, after the PCB substrate is against the vertical plate, since the conveying roller is still rotating, the end of the PCB substrate that contacts the vertical plate is prone to arching or tilting downward, causing the PCB substrate to fall. At the same time, since the limit mechanism requires a certain amount of installation space, the distance between the adjacent conveying rollers on both sides of the limit mechanism installation location will be larger than the normal distance, causing PCB substrates with slightly smaller sizes to fall when passing through the position of the limit mechanism. Therefore, an improved technology is urgently needed to solve the above problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a track limit mechanism for a PCB substrate assembly line. When limit is not required, the support of support rollers can prevent the PCB substrate from swinging in the installation gap of the limit assembly, thereby preventing the PCB substrate from falling or getting stuck on the assembly line. In addition, the use of an arc-shaped limit block can prevent the PCB substrate from being lifted up and falling compared to a straight limit structure, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a PCB substrate assembly line track limiting mechanism, comprising a conveying mechanism and a limiting assembly;

[0006] The conveying mechanism includes side plates and conveying rollers, wherein there are two side plates arranged in parallel, a plurality of conveying rollers are arranged between the two side plates, wherein a gap for installing a limit assembly is left between two adjacent conveying rollers, a supporting cross bar is arranged between the side plates and below the gap for installing the limit assembly, and a first support plate is arranged in the middle of the upper surface of the supporting cross bar;

[0007] The limit assembly includes a shaft rod, an arc-shaped limit block, a support roller and a cylinder, wherein both ends of the shaft rod are rotatably connected to the side plates, and the shaft rod is provided with a plurality of arc-shaped limit blocks at intervals along the axial direction by bolts, and a convex shaft is provided on the inner side of the arc-shaped limit blocks at both ends, and a convex shaft is provided on both sides of the remaining arc-shaped limit blocks, and support rollers are provided between adjacent arc-shaped limit blocks, and both ends of the support roller are cooperated and connected with the corresponding convex shafts, and a second support plate is provided on the lower surface of the arc-shaped limit block located in the middle position, and the bottom of the cylinder is rotatably connected to the first support plate through the first connecting plate and the rotating shaft, and the piston rod of the cylinder is provided with a second connecting plate, and the piston rod of the cylinder is rotatably connected to the second support plate through the second connecting plate and the rotating shaft.

[0008] Preferably, the utility model provides a PCB substrate assembly line track limiting mechanism, wherein the concave surface of the arc-shaped limiting baffle faces a direction away from one end of the cylinder.

[0009] Preferably, the utility model provides a PCB substrate assembly line track limiting mechanism, wherein shaft holes are opened at both ends of the support roller, and the shaft holes at both ends of the support roller cooperate with the convex shaft.

[0010] Preferably, the utility model provides a PCB substrate assembly line track limiting mechanism, wherein the number of the arc-shaped limiting baffles is odd.

[0011] Preferably, the utility model provides a PCB substrate assembly line track limiting mechanism, wherein both ends of the shaft rod pass through the side plates and are provided with limiting holes, and the shaft rod limiting holes are provided with limiting retaining springs.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The limit assembly is arranged at the installation gap of the limit assembly. The limit assembly is composed of multiple arc-shaped limit baffles and support rollers. The arc-shaped limit baffles rotate around the shaft. When no limit is required, the support of the support rollers can prevent the PCB substrate from swinging at the installation gap of the limit assembly, thereby preventing the PCB substrate from falling or getting stuck on the assembly line. In addition, the use of arc-shaped limit baffles can prevent the PCB substrate from being lifted up and falling compared to the straight plate limit structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 For attachment Figure 1 The enlarged structural diagram at the mark A in the middle;

[0016] Figure 3This is a schematic diagram of the top view of the structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model located at the arc-shaped limit block;

[0018] Figure 5 This is a schematic diagram of the limiting state of the utility model.

[0019] In the figure: side plate 1, conveying roller 2, supporting cross bar 3, first support plate 4, shaft 5, arc-shaped limit baffle 6, support roller 7, cylinder 8, cam 9, second support plate 10, first connecting plate 11, second connecting plate 12, limit hole 13, limit retaining spring 14. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments and drawings of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0021] It should be noted that, in the description of the present invention, the terms "inside", "outside", "up", "down", "both sides", "one end", "the other end", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0022] See also Figure 1-4 , the utility model provides a technical solution: a PCB substrate assembly line track limiting mechanism, including a conveying mechanism and a limiting component;

[0023] The conveying mechanism includes side panels 1 and conveying rollers 2. There are two side panels 1 arranged in parallel. A plurality of conveying rollers 2 are provided between the two side panels 1. A gap for installing a limit assembly is left between two adjacent conveying rollers 2. A supporting crossbar 3 is provided between the side panels 1 and below the gap for installing the limit assembly. A first support plate 4 is provided in the middle of the upper surface of the supporting crossbar 3.

[0024] The limiting assembly includes a shaft rod 5, an arc-shaped limiting baffle 6, a support roller 7 and a cylinder 8. The two ends of the shaft rod 5 are rotatably connected to the two side plates 1 respectively. The two ends of the shaft rod 5 pass through the side plates 1 and are provided with limiting holes 13. A limiting retaining spring 14 is provided in the limiting hole 13 of the shaft rod 5 to ensure that the shaft rod 5 does not move in the axial direction. The shaft rod 5 is installed with a plurality of arc-shaped limiting baffles 6 in parallel and at intervals along the axial direction by bolts. The number of arc-shaped limiting baffles 6 is odd, so as to ensure that an arc-shaped limiting baffle 6 in the middle of the shaft rod 5 corresponds exactly to the position of the cylinder 8, thereby realizing the connection with the cylinder 8. A convex shaft 9 is provided on the inner side of the arc-shaped limiting baffles 6 at both ends of the shaft rod 5, and a convex shaft 9 is provided on both sides of the remaining arc-shaped limiting baffles 6. Supports are provided between adjacent arc-shaped limiting baffles 6. Support roller 7, both ends of the support roller 7 are connected with the corresponding convex shaft 9, and shaft holes are opened at both ends of the support roller 7. The shaft holes at both ends of the support roller 7 cooperate with the convex shaft 9 to realize the installation of the support roller 7. A second support plate 10 is provided on the lower surface of an arc-shaped limit baffle 6 located in the middle position. The bottom of the cylinder 8 is rotatably connected to the first support plate 4 through a first connecting plate 11 and a rotating shaft. The piston rod of the cylinder 8 is provided with a second connecting plate 12. The piston rod of the cylinder 8 is rotatably connected to the second support plate 10 through the second connecting plate 12 and the rotating shaft. The concave surface of the arc-shaped limit baffle 6 faces away from one end of the cylinder 8 to ensure that when the arc-shaped limit baffle 6 is erected, the concave surface faces the direction of the PCB substrate, thereby ensuring that the front end of the PCB substrate will not warp or tilt downward.

[0025] Installation method and operating principle: First, install the conveyor roller 2 between the two side panels 1, and leave a gap for the installation of the limit assembly between the two adjacent conveyor rollers 2 at the blocking position. Then install the support crossbar 3 between the two side panels 1 and at the gap for the installation of the limit assembly. Install the support roller 7 between the multiple arc-shaped limit baffles 6, and place the arc-shaped limit baffles 6 and the support roller 7 between the two side panels 1. Then, pass the shaft 5 through the side panels 1 and each arc-shaped limit baffle 6, and fasten the arc-shaped limit baffle 6 to the shaft 5 with bolts. Then, insert the limit spring 14 into the limit holes 13 at both ends of the shaft 5 to ensure that the shaft 5 does not move axially. Finally, connect the bottom of the cylinder 8 to the first support plate 4 through the rotating shaft, and rotate the piston rod of the cylinder 8 to the second support plate 10 at the bottom of the middle arc-shaped limit baffle 6 through the rotating shaft to complete the installation. When in use, the piston rod of the cylinder 8 is in a retracted state. At this time, the top of the support roller 7 and the top of the conveyor roller 2 are at the same horizontal plane. If the PCB substrate cannot be produced after quality confirmation or if major or batch defects are found at the back end, the assembly line track will forcibly intercept the PCB substrate from entering the wave soldering furnace. At this time, the piston rod of the cylinder 8 pushes outward, thereby driving the arc-shaped limit block 6 to rise and be in a vertical state. At this time, the PCB substrate is limited by each arc-shaped limit block 6, such as Figure 5The present invention has a reasonable structure. The limit assembly is arranged at the installation gap of the limit assembly. The limit assembly is composed of a plurality of arc-shaped limit baffles 6 and support rollers 7. The arc-shaped limit baffles 6 rotate around the shaft 5. When no limit is required, the support of the support rollers 7 can prevent the PCB substrate from swinging at the installation gap of the limit assembly, thereby preventing the PCB substrate from falling or getting stuck on the assembly line. In addition, the use of the arc-shaped limit baffles 6 can prevent the PCB substrate from being lifted up and falling compared to the straight limit structure.

[0026] Anything not described in detail in the present invention is well known to those skilled in the art.

[0027] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A track limiting mechanism for a PCB substrate assembly line, characterized by: Including conveying mechanism and limiting components; The conveying mechanism comprises side plates (1) and conveying rollers (2), wherein there are two side plates (1) arranged in parallel, a plurality of conveying rollers (2) are arranged between the two side plates (1), wherein a gap for installing a limiting component is left between two adjacent conveying rollers (2), a supporting cross bar (3) is arranged between the side plates (1) and below the gap for installing the limiting component, and a first support plate (4) is arranged in the middle of the upper surface of the supporting cross bar (3); The limiting assembly comprises a shaft (5), an arc-shaped limiting baffle (6), a supporting roller (7) and a cylinder (8). The two ends of the shaft (5) are rotatably connected to the side plates (1). The shaft (5) is provided with a plurality of arc-shaped limiting baffles (6) arranged in parallel and spaced relation along the axial direction by bolts. The inner sides of the arc-shaped limiting baffles (6) at the two ends are provided with convex shafts (9), and the two sides of the other arc-shaped limiting baffles (6) are provided with convex shafts (9). Support rollers (7) are provided between adjacent arc-shaped limiting baffles (6). The roller (7) is provided with two ends of the support roller (7) being connected with the corresponding convex shaft (9); a second support plate (10) is provided on the lower surface of the arc-shaped limit baffle (6) located in the middle position; the bottom of the cylinder (8) is rotatably connected to the first support plate (4) through the first connecting plate (11) and the rotating shaft; the piston rod of the cylinder (8) is provided with a second connecting plate (12); the piston rod of the cylinder (8) is rotatably connected to the second support plate (10) through the second connecting plate (12) and the rotating shaft.

2. The PCB substrate assembly line track limiting mechanism according to claim 1, characterized in that: The concave surface of the arc-shaped limiting baffle (6) faces a direction away from one end of the cylinder (8).

3. The PCB substrate assembly line track limiting mechanism according to claim 1, characterized in that: Axial holes are provided at both ends of the support roller (7), and the axial holes at both ends of the support roller (7) cooperate with the convex shaft (9).

4. The PCB substrate assembly line track limiting mechanism according to claim 1, characterized in that: The number of the arc-shaped limiting blocks (6) is odd.

5. The PCB substrate assembly line track limiting mechanism according to claim 1, characterized in that: Both ends of the shaft rod (5) pass through the side plates (1) and are provided with limiting holes (13), and the limiting holes (13) of the shaft rod (5) are provided with limiting clamping springs (14).

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