A transmission belt feeding mechanism for PCB board

Abstract

The utility model provides a kind of feeding mechanism of conveying belt for PCB, including two installation main body, one installation main body is set to fixed end, another installation main body bottom is set to movable end by linear moving device drive arrangement;The motor is installed in one end of the installation main body by bolt;The installation main body is provided with bearing;Belt is drivingly connected between the output of the motor and bearing;The bearing is connected between adjustment assembly and installation main body, for adjusting the tightness of belt, to facilitate bearing rotation smooth;The top of each installation main body is bolted with pressing plate;The transmission channel for PCB transmission is formed between the pressing plate and belt;The opposite side wall of two installation main bodies is respectively provided with positioning structure for positioning PCB;The top of one installation main body is further provided with limiting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of PCB board processing, and in particular to a conveyor belt feeding mechanism that can be used for PCB boards. Background Technology

[0002] In automated production lines for electronic manufacturing, PCB boards need to be continuously and stably transferred between multiple workstations; however, existing feeding mechanisms generally suffer from the following technical bottlenecks:

[0003] Traditional fixed-pitch conveyor belts are difficult to be compatible with PCBs of different lengths or widths. When changing product models, manual adjustments or even machine shutdowns are required to replace components, affecting production flexibility and efficiency. After long-term operation, the synchronous belt or flat belt may loosen, leading to transmission slippage and uneven speed. Moreover, the adjustment process usually requires disassembling the support or repositioning the shaft system, making maintenance complex. In the absence of effective dynamic positioning methods, PCBs are prone to shifting and tilting during high-speed transmission, affecting the alignment accuracy of subsequent precision operations such as component insertion and screw fastening.

[0004] Therefore, the aim is to provide a conveyor belt feeding mechanism for PCB boards, which solves the above problems and achieves efficient, accurate and flexible automatic feeding of PCB boards of various specifications. Utility Model Content

[0005] To address the problems of existing PCB board conveying mechanisms being unable to adapt to PCB boards of various sizes and having insufficient positioning accuracy, this utility model provides a conveyor belt feeding mechanism that can be used for PCB boards.

[0006] The present invention provides a conveyor belt feeding mechanism for PCB boards, which adopts the following technical solution:

[0007] A conveyor belt feeding mechanism for PCB boards includes two mounting bodies, one of which is a fixed end, and the other is a movable end driven by a linear mobile device at its bottom. A motor is bolted to one end of each mounting body. A bearing is provided on each mounting body. A belt drives the output of the motor to the bearing. The bearing is connected to the mounting body via an adjustment assembly to adjust the belt tension for smooth bearing rotation. A pressure plate is bolted to the top of each mounting body. A conveying channel for PCB board transport is formed between the pressure plate and the belt. Positioning structures for positioning the PCB board are provided on the opposite sidewalls of the two mounting bodies. A limit mechanism is also provided on the top of one of the mounting bodies.

[0008] Furthermore, an adapter plate is installed on the outer wall of one of the mounting bodies and is fixedly connected to the equipment body by bolts. A linear guide slider is installed on the bottom of the other mounting body by bolts, which is slidably connected to an external linear guide rail and achieves linear movement through an external power source, thereby adjusting the relative distance between the two mounting bodies.

[0009] Furthermore, the adjustment assembly includes an adjustment block, a mounting screw, an adjustment groove, a retaining groove, and an adjustment bolt. The mounting body has a mounting groove at one end where the bearing is located, and the adjustment block is slidably connected inside the mounting groove. The outer wall of the adjustment block has a retaining groove. Through-type adjustment grooves are formed on both sides of the retaining groove, and an adjustment bolt is installed within the retaining groove. The nut of the adjustment bolt engages with the retaining groove, and the screw passes through the adjustment groove near the mounting body and is threadedly connected to the mounting body. The diameter of the nut of the adjustment bolt is larger than the width of the adjustment groove. The adjustment block and the mounting groove are fixedly connected by the mounting bolt. After the adjustment bolt positions the bearing, it is further fixed by the mounting bolt.

[0010] Furthermore, the positioning structure includes a mounting plate, a cylinder, a push rod, a lifting groove, a positioning rod, and a positioning plate; several mounting plates are bolted to the outer side wall of each mounting body, and a cylinder is bolted to the inner side wall of each mounting plate; the output end of the cylinder is connected to a push rod; a circular lifting groove is formed inside the mounting body; a positioning rod is provided inside the lifting groove; one end of the positioning rod is bolted to the push rod; the other end of the positioning rod is bolted to a positioning plate on the outer side of the mounting body; the positioning plate can lift the PCB board, separating it from the belt and pressing it against the pressure plate for fixation;

[0011] Furthermore, the limiting structure includes a limiting cylinder and a limiting block; a hydraulic rod is bolted to the top of the mounting body; the output end of the hydraulic rod is bolted to the limiting block, and the forward push of the limiting block can restrict the transmission of the PCB board;

[0012] Furthermore, the width of the lifting groove is greater than the cross-sectional diameter of the positioning rod;

[0013] Furthermore, the length of the lifting groove allows the top of the lifting plate to lift the PCB board to the bottom of the pressure plate.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] This invention innovatively integrates an adjustable movable end, a belt tension adjustment component, a pneumatic lifting and positioning structure, a flexible limiting mechanism, and a pressure plate constraint system, successfully solving multiple problems in adaptability, stability, positioning accuracy, and automation level of traditional feeding devices. The logic between the various structures is clear and the coordination is orderly, forming a complete functional closed loop that integrates adjustment, transmission, limiting, positioning, and release. It is particularly suitable for automated scenarios with high positioning requirements, such as SMT back-end insertion, fastening, and testing. It features modularity, standardization, easy maintenance, and high compatibility, conforming to the development trend of modern intelligent manufacturing towards flexible and intelligent production lines, and has good promotion and application value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 An enlarged schematic diagram of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the internal structure of the positioning structure of this utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of Part B;

[0020] Figure 5 This is a schematic diagram of the internal structure of the limiting structure of this utility model.

[0021] As shown in the figure: 1-Main mounting body, 2-Motor, 21-Bearing, 211-Adjusting block, 212-Mounting screw, 213-Adjusting groove, 214-Card slot, 215-Adjusting bolt, 22-Belt, 3-Pressure plate, 31-Conveying channel, 4-PCB board, 5-Adapter plate, 51-Linear guide rail slider, 6-Mounting plate, 61-Cylinder, 62-Push rod, 63-Lifting groove, 64-Positioning rod, 65-Positioning plate, 7-Limiting structure, 71-Limiting cylinder, 72-Limiting block. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described in detail below:

[0023] This utility model discloses a conveyor belt feeding mechanism that can be used on PCB boards, such as... Figure 1As shown, a conveyor belt feeding mechanism for PCB boards includes two mounting bodies 1. One mounting body 1 is a fixed end, and the bottom of the other mounting body 1 is a movable end driven by a linear mobile device. A motor 2 is bolted to one end of each mounting body 1. A bearing 21 is provided on each mounting body 1. A belt 22 is connected between the output end of the motor 2 and the bearing 21. The bearing 21 is connected to the mounting body 1 through an adjustment component to adjust the tension of the belt 22, facilitating smooth rotation of the bearing 21. A pressure plate 3 is bolted to the top of each mounting body 1. A conveying channel 31 for conveying PCB boards 4 is formed between the pressure plate 3 and the belt 22. Positioning structures for positioning PCB boards 4 are provided on the opposite sidewalls of the two mounting bodies 1. A limit mechanism is also provided on the top of one of the mounting bodies 1. In this embodiment, according to the length of the PCB board 4 to be processed, the control system issues a command to drive the movable end to move along the linear guide rail to the target position, so that the distance between the two mounting bodies 1 matches P. CB length; after adjustment, lock the slider position; at the same time check the tension of belt 22, and make fine adjustments through the adjustment component if necessary; the upstream conveyor line sends PCB board 4 into the conveyor channel 31 of this mechanism; motor 2 starts, drives belt 22 to rotate, and drives PCB board 4 to move forward; pressure plate 3 restricts the upward displacement of PCB board 4 to ensure that it is stably attached to the upper surface of belt 22; the positioning structure is in the descending state and does not restrict the PCB from entering; when PCB board 4 reaches the designated station, the limit mechanism is activated, the limit block 72 extends, and blocks the PCB from continuing to move forward; at the same time, the cylinder 61 in the positioning structure is activated, lifting the positioning plate 65 and slightly lifting PCB board 4 away from the surface of belt 22 to achieve precise positioning in the disengaged state; at this time, belt 22 can continue to rotate without affecting the positioning state; after the process is completed, positioning plate 65 descends and resets, and PCB resumes contact with belt 22; limit block 72 retracts, and belt 22 pushes PCB into the next station again; the feeding mechanism completes one cycle and is ready to receive the next PCB board 4;

[0024] like Figure 1As shown, one of the mounting bodies 1 has an adapter plate 5 installed on its outer wall, which is fixedly connected to the equipment body by bolts. The bottom of the other mounting body 1 has a linear guide slider 51 installed by bolts, which is slidably connected to an external linear guide rail and moves linearly through an external power source to adjust the relative distance between the two mounting bodies 1. In this embodiment, when the production line switches to a new specification PCB board 4, the control system reads the parameters, calculates the required center distance, and issues a command to start the external power source, such as a servo cylinder, to push the movable end to move slowly along the linear guide rail. During the movement, the encoder or grating ruler provides real-time feedback of the position signal until the set value is reached. After reaching the position, the power source remains locked, or the position is locked by a mechanical clamping mechanism. The movable end is fixed in position and together with the fixed end, forms a stable conveying platform. The tension of the belt 22 is kept constant after adjustment to ensure reliable transmission. The entire mechanism enters an automatic cyclic operation mode.

[0025] like Figure 2 As shown, the adjustment assembly includes an adjustment block 211, a mounting screw 212, an adjustment groove 213, a retaining groove 214, and an adjustment bolt 215. The mounting body 1 has a mounting groove at one end where a bearing 21 is located, and the adjustment block 211 is slidably connected inside the mounting groove. A retaining groove 214 is formed on the outer wall of the adjustment block 211. Through adjustment grooves 213 are formed on both sides of the retaining groove 214, and an adjustment bolt 215 is placed inside the retaining groove 214. The nut of the adjustment bolt 215 is engaged within the retaining groove 214, and the screw passes through the adjustment groove 213 near the mounting body 1 and is threadedly connected to the mounting body 1. The diameter of the nut of the adjustment bolt 215 is larger than the width of the adjustment groove 213. There is a connection between the adjustment block 211 and the mounting groove. After the bearing 21 is positioned by adjusting bolt 215 and fixed by mounting bolts, it is further secured. In this embodiment, if the belt 22 is found to be loose or a new belt 22 is replaced, a tensioning operation is required. Loosen the mounting bolts used to fix the adjusting block 211 so that it can slide in the mounting groove. Use a tool to rotate the adjusting bolt 215. If rotated clockwise, the screw is pulled outward, pulling the adjusting block 211 outward. This causes the bearing 21 to move outward, tightening the belt 22. Observe the deflection of the belt 22 or use a tension meter to determine whether the ideal tension has been reached. After reaching the appropriate tension, keep the position unchanged. Tighten the mounting bolts to firmly connect the adjusting block 211 to the mounting body 1 to complete the adjustment.

[0026] like Figure 3 , 4As shown, the positioning structure includes a mounting plate 6, a cylinder 61, a push rod 62, a lifting groove 63, a positioning rod 64, and a positioning plate 65. Several mounting plates 6 are bolted to the outer wall of each mounting body 1, and a cylinder 61 is bolted to the inner wall of each mounting plate 6. The output end of the cylinder 61 is connected to the push rod 62. A circular lifting groove 63 is formed inside the mounting body 1. A positioning rod 64 is installed inside the lifting groove 63. One end of the positioning rod 64 is bolted to the push rod 62. The other end of the positioning rod 64 is bolted to the positioning plate 65 on the outer side of the mounting body 1. The positioning plate 65 can lift the PCB board 4, separating it from the belt 22 and pressing it against the pressure plate 3 for fixation. In this embodiment, the piston of the cylinder 61 retracts, and the push rod 62 pulls the positioning rod 64 downwards. The positioning plate 65 is at its lowest position, below the conveying plane, allowing the PCB board 4 to smoothly enter or leave the mechanism. When PCB board 4 reaches the target station and the limiting mechanism blocks its advance, the control system triggers cylinder 61 to inflate, and the piston extends; push rod 62 pushes positioning rod 64 upward along lifting groove 63; positioning plate 65 rises accordingly, contacts and lifts the edge of PCB board 4; PCB board 4 is slightly lifted, detached from the surface of belt 22, eliminating friction interference; at this time, even if belt 22 continues to run, it will not move PCB board 4, achieving precise positioning; after the process is completed, cylinder 61 exhausts air, and piston retracts; positioning plate 65 descends and resets, and PCB board 4 falls back onto belt 22; the limiting mechanism retracts, and belt 22 drives PCB board into the next station;

[0027] like Figure 5 As shown, the limiting structure 7 includes a limiting cylinder 71 and a limiting block 72; a hydraulic rod is bolted to the top of the mounting body 1; the output end of the hydraulic rod is bolted to the limiting block 72, and the limiting block 72 can restrict the conveying of the PCB board 4 by pushing it forward; in this embodiment, the limiting cylinder 71 is in a retracted state; the limiting block 72 is completely out of the conveying area; the PCB board 4 can enter freely; when the PCB board 4 approaches the target position, the photoelectric sensor detects its front end; after a certain delay, the system sends a signal to extend the limiting cylinder 71; the limiting block 72 quickly inserts into the conveying path, blocking the PCB board 4 from continuing to move forward; the front end of the PCB board 4 abuts against the limiting block 72, achieving rough positioning; after limiting, the lifting cylinder 61 in the positioning structure is immediately activated; the positioning plate 65 rises, lifting and fixing the PCB board 4; at this time, the limiting block 72 can be retracted or kept extended, depending on the design; after the process is completed, the positioning plate 65 descends; the limiting block 72 retracts; the belt 22 starts, pushing the PCB into the next stage;

[0028] like Figure 3 , 4As shown, the width of the lifting groove 63 is greater than the cross-sectional diameter of the positioning rod 64. In this embodiment, it is ensured that the positioning rod 64 has sufficient clearance to slide freely in the groove to avoid jamming due to processing errors, thermal expansion and contraction, or dust blockage. However, the clearance should not be too large, otherwise it will cause shaking and affect the positioning accuracy.

[0029] like Figure 3 , 4 As shown, the length of the lifting groove 63 allows the top of the lifting plate to lift the PCB board 4 to the bottom of the pressure plate 3; in this embodiment, it is ensured that the positioning rod 64 can rise to a sufficient height; so that the positioning plate 65 connected to its top can completely lift the PCB board 4 until its upper surface is close to or in contact with the bottom surface of the pressure plate 3; in this way, the unloaded state of being disconnected from the belt 22 can be truly achieved, and the residual friction force can be avoided from affecting the positioning accuracy.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A conveyor belt feeding mechanism for use on PCB boards, characterized in that: The device includes two mounting bodies (1), one of which is a fixed end and the other is a movable end driven by a linear mobile device at its bottom. A motor (2) is bolted to one end of each mounting body (1). A bearing (21) is provided on each mounting body (1). A belt (22) is connected between the output end of the motor (2) and the bearing (21). The bearing (21) is connected to the mounting body (1) through an adjustment component to adjust the tension of the belt (22) so that the bearing (21) can rotate smoothly. A pressure plate (3) is bolted to the top of each mounting body (1). A conveying channel (31) for conveying the PCB board (4) is formed between the pressure plate (3) and the belt (22). Positioning structures for positioning the PCB board (4) are provided on the opposite sidewalls of the two mounting bodies (1). A limit mechanism is also provided on the top of one of the mounting bodies (1).

2. A conveyor belt feeding mechanism for PCB boards according to claim 1, characterized in that... One of the mounting bodies (1) has an adapter plate (5) installed on its outer side wall, which is fixedly connected to the equipment body by bolts. The bottom of the other mounting body (1) has a linear guide slider (51) installed by bolts, which is slidably connected to an external linear guide rail and moves linearly through an external power source to adjust the relative distance between the two mounting bodies (1).

3. A conveyor belt feeding mechanism for PCB boards according to claim 1, characterized in that... The adjustment assembly includes an adjustment block (211), a mounting screw (212), an adjustment groove (213), a retaining groove (214), and an adjustment bolt (215). The mounting body (1) has a mounting groove at one end where a bearing (21) is located, and the adjustment block (211) is slidably connected inside the mounting groove. A retaining groove (214) is formed on the outer wall of the adjustment block (211). Through adjustment grooves (213) are formed on both sides of the retaining groove (214), and the retaining groove (214) contains... An adjusting bolt (215) is provided, with the nut of the adjusting bolt (215) engaging in the slot (214). The bolt passes through the adjusting groove (213) on the side near the mounting body (1) and is threadedly connected to the mounting body (1). The diameter of the nut of the adjusting bolt (215) is greater than the width of the adjusting groove (213). The adjusting block (211) is fixedly connected to the mounting groove by the mounting bolt. After the adjusting bolt (215) positions the bearing (21), it is further fixed by the mounting bolt.

4. A conveyor belt feeding mechanism for PCB boards according to claim 1, characterized in that... The positioning structure includes a mounting plate (6), a cylinder (61), a push rod (62), a lifting groove (63), a positioning rod (64), and a positioning plate (65). Several mounting plates (6) are bolted to the outer side wall of each mounting body (1), and a cylinder (61) is bolted to the inner side wall of each mounting plate (6). The output end of the cylinder (61) is connected to the push rod (62). A circular lifting groove (63) is provided inside the mounting body (1). A positioning rod (64) is provided inside the lifting groove (63). One end of the positioning rod (64) is bolted to the push rod (62). The other end of the positioning rod (64) is bolted to the outer side of the mounting body (1) and is connected to the positioning plate (65). The positioning plate (65) can lift the PCB board (4), separate it from the belt (22), and press it against the pressure plate (3) for fixation.

5. A conveyor belt feeding mechanism for PCB boards according to claim 1, characterized in that... It also includes a limiting structure (7), which includes a limiting cylinder (71) and a limiting block (72); a hydraulic rod is installed on the top of the mounting body (1) by bolts; the output end of the hydraulic rod is connected to the limiting block (72) by bolts, and the limiting block (72) can limit the transmission of the PCB board (4) by pushing it forward.

6. A conveyor belt feeding mechanism for PCB boards according to claim 4, characterized in that... The width of the lifting groove (63) is greater than the cross-sectional diameter of the positioning rod (64).

7. A conveyor belt feeding mechanism for PCB boards according to claim 4, characterized in that... The length of the lifting groove (63) allows the top of the lifting plate to lift the PCB board (4) to the bottom of the pressure plate (3).

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