Automatic conveying line

Abstract

The utility model relates to an automatic conveying line which comprises a fixed rail and a movable rail which are longitudinally arranged front and back. The corresponding faces of the fixed rail and the movable rail are each provided with a belt conveying mechanism. A first servo motor is arranged at the bottom of the fixed rail, a driving shaft in transmission connection with the first servo motor is arranged above the first servo motor, the driving shaft penetrates through the fixed rail and the movable rail, and the belt conveying mechanism is in transmission connection with the driving shaft; a lead screw is arranged on one side of the driving shaft; one end of the lead screw is movably connected with the inner side face of the fixed rail, the other end of the lead screw penetrates through the movable rail and extends to the outer side of the movable rail, the movable rail is movably connected with the lead screw through a lead screw nut, and the other end, corresponding to the fixed rail, of the lead screw is provided with a second servo motor in transmission connection with the lead screw. The automatic conveying line can be flexibly adjusted in the width direction, universality is high, application is flexible, and the production and machining efficiency of products is improved.

Description

Technical Field

[0001] This utility model relates to printed circuit board conveyor lines, and more particularly to an automatic conveyor line. Background Technology

[0002] The manufacturing process of printed circuit boards (PCBs) includes printing PCBs, cutting copper-clad laminates, pre-processing copper-clad laminates, transferring PCBs, etching circuit boards, drilling PCBs, and pre-treatment of circuit boards. Most of these processes are handled manually, meaning that after each process is completed, workers move the finished product to the next process. This method is labor-intensive, increases production costs, and the efficiency of manual product transfer is relatively low, impacting overall processing efficiency.

[0003] To improve production efficiency, automated production lines are currently used for circuit board printing. Products are transported between processes via conveyor lines, where robotic grippers or suction cups at each stage remove products from the corresponding stage and place them on or remove them from the conveyor line. These conveyor lines primarily use conveyor belts for product transfer between processes. However, existing conveyor belts have fixed widths, which cannot accommodate the structural size of printed circuit boards. When products are positioned and gripped by robotic grippers, the accuracy of the circuit board's position on the conveyor belt is insufficient, affecting gripping accuracy and requiring significant manual intervention. Therefore, to ensure gripping accuracy, conveyor belts of appropriate sizes need to be customized according to the product size to fit the circuit board. Consequently, these circuit board conveyor belts lack versatility and flexibility, increasing operating costs. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an automatic conveyor line that can flexibly adjust the width of the conveyor line according to the width of the conveyed product.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] An automated conveyor line includes a fixed rail and a movable rail arranged longitudinally. The movable rail is located on one side of the fixed rail and can move left and right relative to the fixed rail. A set of belt conveyor mechanisms is respectively arranged on the corresponding surfaces of the fixed rail and the movable rail, and the two sets of belt conveyor mechanisms are symmetrical. A first servo motor is fixedly connected to the bottom of the fixed rail. A drive shaft is connected to the first servo motor and driven by it. The drive shaft is arranged laterally and passes through both the fixed rail and the movable rail. The belt conveyor mechanisms are driven by the drive shaft, and the first servo motor drives the belt conveyor mechanisms through the drive shaft. A lead screw is arranged on one side of the drive shaft and is arranged laterally, parallel to the drive shaft. One end of the lead screw is movably connected to the inner surface of the fixed rail via a bearing, and the other end passes through the movable rail and extends to the outer side of the movable rail. The movable rail and the lead screw are movably connected by a lead screw nut. A second servo motor is connected to the other end of the lead screw corresponding to the fixed rail. A slide rail is arranged at the bottom of the movable rail and is arranged laterally. The movable rail and the slide rail are slidably connected by a slider.

[0007] Preferably, the belt conveyor mechanism comprises support bars, idler pulley one, a conveyor belt, and idler pulley two. Multiple support bars are arranged longitudinally, with idler pulley one positioned between adjacent support bars and at both ends of adjacent support bars. The conveyor belt is fitted over the support bars and idler pulley one. A knurled belt wheel is located below the bottom of the belt conveyor, fitted onto and connected to the drive shaft. Two idler pulleys are symmetrically arranged on the left and right sides of the knurled belt wheel. An idler pulley three is located below the portion between idler pulley two and the knurled belt wheel. The surfaces of the knurled belt wheel and idler pulley two roll in contact with the outside of the conveyor belt, while the surface of idler pulley three rolls in contact with the inside of the conveyor belt.

[0008] Preferably, the top of the support bar has a belt groove that runs through it from front to back along its length.

[0009] Preferably, the idler wheel one, idler wheel two, and idler wheel three have the same structure, each consisting of a connecting block and a guide wheel with its shaft connected to the outside of the connecting block.

[0010] Preferably, the first servo motor has a drive sprocket fixedly connected to its transmission end, and a driven sprocket corresponding to the drive sprocket is provided on the drive shaft. The driven sprocket and the drive sprocket are connected by a transmission chain.

[0011] Preferably, the slide rail has two rails, which are symmetrically arranged at the bottom of the movable rail near the front and rear ends.

[0012] Preferably, the second servo motor is connected to the lead screw via a belt drive.

[0013] Compared with the prior art, the advantages of this utility model are: this automatic conveyor line has a simple structure, and can be flexibly adjusted in the width direction by using fixed rails and movable rails. It can be flexibly adapted to the conveying of printed circuit boards of different sizes and structures, and can also be used for the transfer of other products. It has strong versatility, flexible application, and improves the production and processing efficiency of products. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the axial structure of an automatic conveyor line according to this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of an automatic conveyor line according to this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of an automatic conveyor belt transmission mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of a support bar structure in an automatic conveyor line according to this utility model;

[0019] Figure 5 This is a schematic diagram of the idler wheel connecting block structure in an automatic conveyor line according to this utility model.

[0020] In the diagram: 1. Fixed rail; 2. Movable rail; 21. Slide rail; 22. Slider; 3. First servo motor; 31. Drive sprocket; 32. Driven sprocket; 33. Transmission chain; 4. Drive shaft; 41. Knurled belt pulley; 5. Second servo motor; 51. Transmission belt; 6. Lead screw; 61. Lead screw nut; 7. Belt transmission mechanism; 71. Support bar; 711. Belt groove; 72. Idler pulley one; 73. Transmission belt; 74. Idler pulley two; 75. Idler pulley three; 700. Connector; 701. Guide wheel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships commonly used when the product of the present invention is in use, 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure or component must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0025] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Example

[0027] Please refer to the instruction manual attached. Figure 1 and 2 As shown, the instruction manual is attached. Figure 1 and 2 The diagram shows an automatic conveyor line according to this utility model. In this embodiment, the automatic conveyor line is mainly used for conveying and handling printed circuit boards (PCBs), coordinating the transfer and connection of products between various processes in PCB production. It includes a fixed rail 1 and a movable rail 2 arranged longitudinally. Both the fixed rail 1 and the movable rail 2 are made of profiles. The fixed rail 1 and the movable rail 2 are typically installed on a horizontal operating table. The movable rail 2 is located on one side of the fixed rail 1 and can move left and right relative to the fixed rail 1. With the fixed rail 1 in a fixed position, the width distance between the movable rail 2 and the fixed rail 1 can be adjusted by the relative movement of the movable rail 2, facilitating the transmission and handling of PCBs of different widths and sizes. A set of belt conveyor mechanisms 7 is respectively arranged on the corresponding surfaces of the fixed rail 1 and the movable rail 2. The two sets of belt conveyor mechanisms 7 are symmetrically arranged left and right. The PCB 7 is placed on top of the two sets of belt conveyor mechanisms 7 for conveying the PCB. A first servo motor 3 is fixedly connected to the bottom of the fixed rail 1. A drive shaft 4, which is connected to the first servo motor 3, is arranged above the first servo motor 3 and is driven by it. The drive shaft 4 is arranged laterally left and right. It should be noted that the drive shaft 4 extends to the outer sides of the fixed rail 1 and the movable rail 2, respectively, passing through the fixed rail 1 and the movable rail 2. The drive shaft 4 is movably connected to the fixed rail 1 via bearings and to the movable rail 2 via pre-set connecting holes on the side of the movable rail 2, with a clearance fit between the drive shaft 4 and the connecting holes. The other end of the drive shaft 4 corresponding to the fixed rail 1 is movably connected to a bearing seat fixedly mounted on the worktable via bearings. In order to drive the movable rail 2 to rotate via the first servo motor 3, the transmission end of the first servo motor 3 is provided with... The drive sprocket 31 is fixedly connected to the drive shaft 4, and a driven sprocket 32 ​​corresponding to the drive sprocket 31 is provided on the drive shaft 4. The driven sprocket 32 ​​and the drive sprocket 31 are connected by a transmission chain 33. The first servo motor 3 drives the drive sprocket 31 to rotate, and the drive sprocket 31 can drive the driven sprocket 32 ​​to rotate through the transmission chain 33, thereby driving the drive shaft 4 to rotate. The belt conveyor mechanism 7 is connected to the drive shaft 4, and the first servo motor 3 drives the belt conveyor mechanism 7 to move through the drive shaft 4. For details, please refer to the appendix of the specification. Figure 3As shown, the belt conveyor mechanism 7 consists of support bars 71, idler pulley 72, conveyor belt 73, and idler pulley 74. Multiple support bars 71 are arranged longitudinally, and the support bars 71 on the two sets of belt conveyor mechanisms 7 are fixedly connected to the corresponding surfaces of the fixed rail 1 and the movable rail 2 by bolts. Idler pulleys 72 are provided between adjacent support bars 71 and at the outer ends of the front and rear ends of two support bars 71. The idler pulleys 72 and support bars 71 are on the same horizontal straight line. The conveyor belt 73 is sleeved on the outside of the support bars 71 and idler pulleys 72. Idler pulleys 72 assist in supporting the conveyor belt 73 and facilitate its rotation. For easier restriction of the width direction of the conveyor belt 73, please refer to the appendix of the instruction manual. Figure 4 As shown, the top of the support bar 71 has a through belt groove 711 along its length. The conveyor belt 73 is located inside the belt scale 711, and the outer surface of the conveyor belt 73 is higher than the height of the belt groove 711. The support bar 71 is mainly used to support the conveyor belt 73 and ensure the flatness of the surface of the conveyor belt 73 at the top of the support bar 71. In order to drive the conveyor belt 73 to move, a belt knurling wheel 41 is provided below the bottom of the belt conveyor mechanism 4. The belt knurling wheel 41 is sleeved on the drive shaft 4 and connected to the drive shaft 4. The drive shaft 4 is connected; it should be noted that the end of the drive shaft 4 has a regular hexagonal structure. Correspondingly, the center of the belt knurled wheel 41 is provided with a shaft connection hole that is sleeved and slidably fitted with the outside of the drive shaft 4. The two sets of belt knurled wheels 41 on the two sets of belt conveyor mechanisms 7 are respectively shaft-connected to the fixed rail 1 and the movable rail 2. The belt knurled wheel 41 connected to the movable rail 2 can move synchronously with the movable rail 2 on the drive shaft 4. In order to facilitate the rotation of the conveyor belt 73 by using the belt knurled wheel 41 to drive the conveyor belt 73, there are two idler wheels 74. Symmetrically arranged on the left and right sides of the belt knurling pulley 41, an idler pulley 3 75 is located below the portion between the idler pulley 2 74 and the belt knurling pulley 41. The wheel surfaces of the belt knurling pulley 41 and the idler pulley 2 74 roll in contact with the outside of the conveyor belt 73, while the wheel surface of the idler pulley 3 75 rolls in contact with the inside of the conveyor belt 73. The idler pulleys 2 74 and 3 75 allow the belt knurling pulley 41 to rotate, thereby driving the conveyor belt 73 to move. This achieves the rotational movement of the conveyor belt 71 outside the support bar 71 and the idler pulley 1 72, facilitating the placement of items on top. Product conveying and handling; it should be noted that the idler wheel 1 72, idler wheel 2 74 and idler wheel 3 75 have the same structure, each consisting of a connecting block 700 and a guide wheel 701 shafted to the outside of the connecting block 700. The outer circumferential surface of the guide wheel 701 is provided with a groove that mates with the conveyor belt. The connecting block 700 can be inserted into the fixed rail 1 and the movable rail 2 and can move relative to the front and rear length direction of the fixed rail 1 and the movable rail 2. The connecting block 700 is provided with a threaded hole, which facilitates its fixing to the fixed rail 1 and the movable rail 2 by bolts.

[0028] To enable the movable rail 2 to move relative to the fixed rail 1 and facilitate adjustment of the width between the movable rail 2 and the fixed rail 1, a lead screw 6 is provided on one side of the drive shaft 4. The lead screw 6 is arranged laterally and is parallel to the drive shaft 4 front to back. One end of the lead screw 6 is movably connected to the inner side of the fixed rail 1 via a bearing, so that the rotation of the lead screw 6 does not affect the fixed rail 1. The other end of the lead screw 6 passes through the movable rail 2 and extends to the outside of the movable rail 2. The movable rail 2 and the lead screw 6 are movably connected via a lead screw nut 61. When the lead screw 6 rotates, it can drive the movable rail 2 to move along its length. The end of the lead screw 6 extending to the outside of the movable rail 2 is movably connected to a bearing seat on the top of the worktable via a bearing, and the lead screw 6 corresponds to the fixed rail 1. The other end passes through the corresponding bearing seat and extends outside the bearing seat. A driven pulley is provided on the extended end. A second servo motor 5 is provided at the bottom of the worktable, corresponding vertically to the lead screw 6. A drive pulley is provided at the transmission end of the second servo motor 5. The drive pulley and the driven pulley correspond vertically and are connected by a belt 51. In order to ensure the stability and balance of the movable rail 2 when it moves, a slide rail 21 is provided at the bottom of the movable rail 2. The slide rail 21 is arranged horizontally to the left and right and is fixedly installed on the worktable. There are two slide rails 21, which are symmetrically arranged at the bottom of the movable rail 2 near the front and rear ends. The movable rail 2 and the slide rail 21 are slidably connected by a slider 22. The sliding cooperation of the slide rail 21 and the slider 21 can facilitate the horizontal movement of the movable rail 2 and ensure the stability and balance of the movement.

[0029] Its specific working principle is as follows: The distance between the movable rail 2 and the fixed rail 1 is adjusted according to the size of the printed circuit board. The specific adjustment method is as follows: the second servo motor 5 rotates clockwise, and the second servo motor 5 drives the lead screw 6 to rotate clockwise via the transmission belt 51. When the lead screw 6 rotates, the lead screw nut 61, which is threaded with it, moves in the opposite direction to the fixed rail 1 along the length of the lead screw 6. Since the lead screw nut 61 is fixedly connected to the movable rail 2, the movable rail 2 moves synchronously with the lead screw nut 61. Furthermore, the sliding contact slider 22 and slide rail 21 ensure the smoothness of the movable rail 1's movement. Simultaneously, the movable rail... The movable rail 2 is clearance-fitted with the drive shaft 4, and the knurled belt wheel 41, which is movably connected to the movable rail 2, is slidingly fitted with the drive shaft 4. Therefore, the movable rail 2 will not be interfered with by the drive shaft 4 when it moves. By adjusting the distance between the movable rail 2 and the fixed rail 1, the width between the two sets of belt conveyor mechanisms 7 can be better adapted to the width of the product to be conveyed. The first servo motor 3 can drive the drive shaft 4 to rotate through the transmission chain 33. When the main shaft 4 rotates, it drives the external knurled belt wheel 41 to rotate. The knurled belt wheel 41 drives the conveyor belt 73 to rotate, thereby realizing the movement of the product placed on top of it.

[0030] This automated conveyor line has a simple structure, consisting of fixed and movable rails that allow for flexible adjustment in width. It can be flexibly adapted to transport printed circuit boards of different sizes and can also be used for the transfer of other products. It is highly versatile, flexible in application, and improves the production and processing efficiency of products.

[0031] It should be emphasized that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic conveyor line, characterized in that: The system includes a fixed rail (1) and a movable rail (2) arranged longitudinally in front and behind. The movable rail (2) is located on one side of the fixed rail (1) and can move left and right relative to the fixed rail (1). A set of belt conveyor mechanisms (7) is respectively arranged on the corresponding surfaces of the fixed rail (1) and the movable rail (2), and the two sets of belt conveyor mechanisms (7) are symmetrical from left to right. A first servo motor (3) is fixedly connected to the bottom of the fixed rail (1), and a drive shaft (4) is connected to the first servo motor (3) above it. The drive shaft (4) is arranged laterally from left to right and passes through the fixed rail (1) and the movable rail (2). The belt conveyor mechanism (7) is connected to the drive shaft (4) for transmission. The first servo motor (3) drives the belt through the drive shaft (4). The transmission mechanism (7) moves; a lead screw (6) is provided on one side of the drive shaft (4), the lead screw (6) is arranged horizontally left and right, and is parallel to the drive shaft (4) front and back; one end of the lead screw (6) is movably connected to the inner side of the fixed rail (1) through a bearing, and the other end passes through the movable rail (2) and extends to the outside of the movable rail (2). The movable rail (2) and the lead screw (6) are movably connected through a lead screw nut (61). A second servo motor (5) is provided on the other end of the lead screw (6) corresponding to the fixed rail (1) and is connected to it for transmission; a slide rail (21) is provided below the bottom of the movable rail (2), the slide rail (21) is arranged horizontally left and right, and the movable rail (2) and the slide rail (21) are slidably connected through a slider (22).

2. An automatic conveyor line according to claim 1, characterized in that: The belt conveyor mechanism (7) consists of a support bar (71), an idler wheel (72), a conveyor belt (73), and an idler wheel (74). The support bar (71) has multiple bars arranged longitudinally. Idler wheels (72) are provided between adjacent support bars (71) and at the front and rear ends of the two support bars (71). The conveyor belt (73) is fitted over the support bars (71) and the idler wheels (72). A belt knurling wheel (41) is located below the bottom of the belt conveyor. The knurled wheel (41) is sleeved on the drive shaft (4) and connected to the drive shaft (4); there are two idler wheels (74), which are symmetrically arranged on the left and right sides of the belt knurled wheel (41). An idler wheel (75) is arranged below the part between the idler wheel (74) and the belt knurled wheel (41). The wheel surfaces of the belt knurled wheel (41) and the idler wheel (74) are in rolling contact with the outside of the conveyor belt (73), and the wheel surface of the idler wheel (75) is in rolling contact with the inside of the conveyor belt (73).

3. An automatic conveyor line according to claim 2, characterized in that: The top of the support bar (71) is provided with a belt groove (711) that runs through the front and back along its length.

4. An automatic conveyor line according to claim 2, characterized in that: The idler wheel one (72), idler wheel two (74) and idler wheel three (75) have the same structure, each consisting of a connecting block (700) and a guide wheel (701) axially connected to the outside of the connecting block (700).

5. An automatic conveyor line according to claim 1, characterized in that: The first servo motor (3) has a drive sprocket (31) fixedly connected to its transmission end, and a driven sprocket (32) corresponding to the drive sprocket (31) is provided on the drive shaft (4). The driven sprocket (32) and the drive sprocket (31) are connected by a transmission chain (33).

6. An automatic conveyor line according to claim 1, characterized in that: The slide rail (21) has two rails, which are symmetrically arranged at the bottom of the movable rail (2) near the front and rear ends.

7. An automatic conveyor line according to claim 1, characterized in that: The second servo motor (5) is connected to the lead screw (6) via a belt (51).

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