A rack and pinion type of board rack conveyor guide

Abstract

The utility model relates to a kind of plug-in rack type board rack conveying guide device, including conveying frame, several conveying rollers are arranged on conveying frame, several guide mechanisms are arranged on conveying frame, and the guide mechanism includes: guide frame, setting on the upper end of conveying frame;Two guide blocks, symmetrically slidingly set on guide frame;Two-way screw rod, rotationally set on guide frame, and the two threads of two-way screw rod are respectively connected with two guide blocks threadedly;Synchronous mechanism is commonly provided between each guide mechanism. By setting guide mechanism, the circuit board conveying deviation problem is solved. The two-way screw rod on guide frame cooperates with symmetrically sliding guide block, and the interval can be accurately adjusted to adapt to circuit board of different width. The reverse thread of two-way screw rod ensures that two guide blocks move synchronously, forms stable lateral limit, avoids trajectory deviation caused by conveying roller wear, uneven stress, and improves conveying stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of plate feeding and unloading machines, and specifically relates to a plug-in type plate frame conveying and guiding device. Background Technology

[0002] In automated production lines such as electronics manufacturing and communication equipment assembly, push-to-open circuit board loading and unloading machines are key equipment for achieving automatic loading and unloading of circuit boards. Their core function is to precisely transfer circuit boards between the conveyor path and designated slots via mechanical transmission. A typical workflow is as follows: the conveyor rollers on the conveyor frame rotate, feeding the circuit board into the frame along the conveying direction; once the circuit board reaches the preset position, the conveyor frame rotates 90 degrees to align the conveying direction with the slot opening direction; subsequently, the conveyor rollers continue to rotate, relying on friction to drive the circuit board to move and insert into the slot, completing the loading or unloading operation.

[0003] However, existing push-to-open type board take-up and take-down machines have significant technical defects: the conveyor frame generally lacks a dedicated guiding structure. This design deficiency makes the circuit boards prone to deviation during the conveying process, mainly due to two reasons: first, after long-term use, the conveyor rollers wear down, reducing surface flatness and causing uneven distribution of friction between the rollers and the circuit boards; second, factors such as the material properties of the circuit boards themselves, placement deviations, or external vibrations can easily cause force imbalances during the conveying process, ultimately causing the circuit board's movement trajectory to deviate from the preset path.

[0004] The aforementioned misalignment issue can have serious consequences: when the conveyor rotates 90 degrees, the misaligned edge of the circuit board becomes difficult to align precisely with the slot opening. This can range from increasing insertion resistance and causing damage to the circuit board edge or slot, to directly causing insertion failure and requiring manual intervention. This not only severely impacts production continuity and automation efficiency but also risks secondary damage to the circuit board due to repeated adjustments, significantly increasing production costs and quality risks. Therefore, there is an urgent need to develop an improved structure with reliable guiding capabilities to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a plug-in type plate conveying and guiding device to solve the problems existing in the background art.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a plug-in type plate frame conveying and guiding device, comprising a conveying frame, wherein a plurality of conveying rollers are arranged on the conveying frame, and a plurality of guiding mechanisms are arranged on the conveying frame, wherein the guiding mechanisms include: A guide frame is disposed at the upper end of the conveyor frame; Two guide blocks are symmetrically slidably mounted on the guide frame; A bidirectional screw is rotatably mounted on the guide frame, and the two threads of the bidirectional screw are respectively threadedly connected to the two guide blocks; A synchronization mechanism is provided among the various guiding mechanisms, which is used to simultaneously drive multiple bidirectional screws to adapt to workpieces of different widths.

[0007] Furthermore, the synchronization mechanism includes: Multiple worm gears are disposed within the guide frame, and each of the multiple worm gears is fixedly assembled to one end of each of the bidirectional screws; A drive rod rotates through multiple guide frames, and the position of the drive rod corresponds to that of the worm gear; Multiple worm gears are fixedly mounted on the drive rod, and each of the multiple worm gears is matched with a specific worm wheel.

[0008] A drive element is disposed on the outermost guide frame and is connected to the drive rod. The drive element is used to provide rotational force to the drive rod.

[0009] Furthermore, the guide block has an installation groove at one inner end, and a guide roller is rotatably installed in the installation groove. Both the upper and lower ends of the guide roller are provided with buffer components.

[0010] Furthermore, the buffer component includes: A buffer groove is formed within the mounting groove; A buffer block is slidably disposed within the buffer groove, and the buffer block is rotatably connected to the guide roller; A limiting rod is provided in the buffer groove, and the limiting rod slides through the buffer block; A buffer spring is sleeved on the limiting rod, and both ends of the spring are connected to the buffer block and the buffer groove, respectively.

[0011] Furthermore, a lower pressure roller is rotatably installed at the lower center of the guide frame.

[0012] Furthermore, mounting blocks are rotatably connected to both ends of the lower pressure roller, and a telescopic rod is fixedly installed between the mounting block and the guide frame. A lower pressure spring is sleeved on the telescopic rod, and the lower pressure spring is connected to the mounting block and the guide frame respectively.

[0013] The beneficial effects of this utility model are: The guiding mechanism solves the circuit board conveying misalignment problem. The bidirectional screw on the guide frame, in conjunction with the symmetrically sliding guide blocks, allows for precise adjustment of the spacing to accommodate circuit boards of different widths. The reverse threads of the bidirectional screw ensure synchronous movement of the two guide blocks, forming a stable lateral limit, preventing trajectory deviation caused by wear of the conveyor rollers or uneven force, and improving conveying stability.

[0014] The synchronization mechanism enables coordinated control of multiple guiding mechanisms. The driving component drives the driving rod to rotate, and the worm gear meshes with the worm wheel to transmit power, causing multiple bidirectional screws to rotate synchronously. This ensures that the spacing between all the guide blocks is consistent, avoids secondary offset, and improves the adaptation efficiency and guiding accuracy for workpieces of different widths.

[0015] The buffer assembly provides flexible protection. The buffer block slides along the buffer groove, working in conjunction with the limiting rod and the buffer spring to absorb lateral impact forces, ensuring that the guide roller fits snugly against the circuit board while preventing edge damage, reducing guiding resistance, and improving conveying smoothness and safety. Attached Figure Description

[0016] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a plug-in type plate frame conveying and guiding device according to this utility model; Figure 2 This is a schematic diagram of the guiding mechanism in a plug-in type plate frame conveying and guiding device of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional schematic diagram of the guide frame in the insert-type plate conveying and guiding device of this utility model; Figure 5 This is a cross-sectional schematic diagram of the guide block in a plug-in type plate frame conveying and guiding device of this utility model.

[0018] The symbols for the main components are explained below: 1. Conveyor frame, 11. Conveyor roller, 2. Guide mechanism, 21. Guide block, 22. Mounting groove, 221. Guide roller, 222. Bidirectional screw, 23. Pressure roller, 24. Mounting block, 25. Telescopic rod, 26. Pressure spring, 27. Synchronization mechanism, 3. Worm gear, 31. Drive rod, 32. Worm, 33. Drive component, 34. Buffer assembly, 4. Buffer groove, 41. Buffer block, 42. Limiting rod, 43. Buffer spring, 44. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-5 As shown, a plug-in type plate rack conveying and guiding device includes a conveying frame 1, a plurality of conveying rollers 11 arranged on the conveying frame 1, and a plurality of guiding mechanisms 2 arranged on the conveying frame 1. The guiding mechanism 2 includes: Guide frame 21 is installed at the upper end of conveyor frame 1; Two guide blocks 22 are symmetrically slidably mounted on the guide frame 21; The bidirectional screw 23 is rotatably mounted on the guide frame 21, and the two threads of the bidirectional screw 23 are respectively threadedly connected to the two guide blocks 22; A synchronization mechanism 3 is provided between each guide mechanism 2. The synchronization mechanism 3 is used to drive multiple bidirectional screws 23 simultaneously to adapt to workpieces of different widths.

[0021] The conveyor frame 1 serves as the basic framework of the entire device, providing installation support for components such as the conveyor roller 11 and the guide mechanism 2, carrying the conveying path of the circuit board, and ensuring that all components work together on a unified standard.

[0022] The conveyor roller 11 is rotatably mounted on the conveyor frame 1. It drives the circuit board to move along the conveying direction by its own rotation and is the core power transmission component for circuit board conveying.

[0023] The guiding mechanism 2 is used to laterally guide the circuit board during transportation, preventing it from shifting due to uneven force or wear of the conveying rollers. The core principle is to adjust the spacing between the two guide blocks 22 to match the width of the circuit board, thereby achieving precise guidance.

[0024] The guide frame 21 is fixed to the upper end of the conveyor frame 1, providing installation and sliding / rotation support for the guide block 22 and the bidirectional screw 23, and is the structural carrier of the guide mechanism 2.

[0025] Two guide blocks 22 are symmetrically slidably mounted on the guide frame 21. By being relatively close to or far apart, they limit the two sides of the circuit board and directly contact the side of the circuit board to achieve guidance. Their sliding arrangement ensures that the spacing is adjustable to adapt to circuit boards of different widths.

[0026] The bidirectional screw 23 is rotatably mounted on the guide frame 21, and its surface has two sections of threads with opposite directions, which are threadedly connected to two guide blocks 22 respectively. When the bidirectional screw 23 rotates, the two sections of reverse threads drive the two guide blocks 22 to slide synchronously and symmetrically along the guide frame 21 (moving closer or further away at the same time), thereby precisely adjusting the guide spacing to adapt to workpieces of different widths.

[0027] The synchronization mechanism 3 is used to drive the bidirectional screws 23 of multiple guide mechanisms 2 to rotate synchronously, ensuring that the spacing of all guide blocks 22 is adjusted at the same time and kept consistent, avoiding the offset of the plate due to the different spacing of each guide mechanism, and realizing the overall adaptation to workpieces of different widths.

[0028] Furthermore, synchronization mechanism 3 includes: Multiple worm gears 31 are disposed inside the guide frame 21, and the multiple worm gears are respectively fixedly assembled to one end of each bidirectional screw 23; The drive rod 32 rotates through multiple guide frames 21, and the position of the drive rod 32 corresponds to the worm gear 31; Multiple worm gears 33 are fixedly mounted on the drive rod 32, and each of the multiple worm gears 33 is matched with a worm wheel 31.

[0029] The drive component 34 is mounted on the outermost guide frame 21 and is connected to the drive rod 32. The drive component 34 is used to provide rotational force to the drive rod 32.

[0030] Multiple worm gears 31 are fixedly mounted on one end of each bidirectional screw 23, driving the bidirectional screw 23 to rotate synchronously; as the driven component of the worm gear transmission, the rotational motion of the worm is converted into the rotational motion of itself (and the bidirectional screw 23).

[0031] The drive rod 32 rotates through multiple guide frames 21 and is the core shaft component for transmitting power. Its rotation can drive multiple worm gears 33 fixed on it to rotate synchronously, ensuring that power can be transmitted to each guide mechanism 2.

[0032] Multiple worm gears 33 are fixedly mounted on the drive rod 32 and rotate synchronously with the drive rod 32. Each worm gear 33 meshes with the worm wheel 31 of the corresponding guide mechanism 2. Through the meshing transmission between the worm and the worm wheel, the rotational motion of the drive rod 32 is transmitted to the worm wheel 31, thereby driving the bidirectional screw 23 to rotate. The worm gear transmission has the characteristics of stable transmission ratio, speed reduction and force increase, and reverse self-locking (the worm wheel cannot drive the worm to rotate when the worm is not rotating), which can ensure stable locking after the guide block 22 spacing is adjusted, and prevent loosening due to external force.

[0033] The drive element 34 is mounted on the outermost guide frame 21 and connected to the drive rod 32, providing rotational power to the drive rod 32. In an optional embodiment, the drive element 34 is preferably a motor, and the motor is connected to the drive rod 32 via a synchronous belt pulley assembly (pulleys are respectively provided on the motor output shaft and the end of the drive rod 32, and the synchronous belt is wound around the pulleys). Compared with chain or gear transmission, synchronous belt drive has the characteristics of smooth transmission, low noise, and no slippage, which can ensure the rotational accuracy of the drive rod 32, thereby ensuring the synchronization of multiple guide mechanisms 2 and improving the stability and accuracy of spacing adjustment.

[0034] Furthermore, an installation groove 221 is provided at one inner end of the guide block, and a guide roller 222 is rotatably installed in the installation groove 221. Both the upper and lower ends of the guide roller 222 are provided with buffer components 4.

[0035] Mounting slot 221 is provided at one inner end of guide block 22 to provide mounting space for guide roller 222 and buffer assembly 4, ensuring that the position of guide roller 222 corresponds to the side of circuit board.

[0036] The guide roller 222 is rotatably installed in the mounting groove 221. When the circuit board contacts the guide block 22, the guide roller 222 rolls with the circuit board conveying direction, which transforms the sliding friction between the traditional guide block 22 and the circuit board into rolling friction, greatly reducing the wear on the side of the circuit board, while reducing the guiding resistance and avoiding the board from shifting or getting stuck due to excessive frictional resistance.

[0037] The buffer assembly 4 is located at the upper and lower ends of the guide roller 222 to provide elastic buffer for the guide roller 222 during the guiding process, so as to avoid damage to the circuit board or cause the board to bounce and deviate due to rigid contact.

[0038] Furthermore, buffer component 4 includes: The buffer groove 41 is formed inside the mounting groove 221; The buffer block 42 is slidably disposed in the buffer groove 41, and the buffer block 42 is rotatably connected to the guide roller 222; The limiting rod 43 is set in the buffer groove 41, and the limiting rod 43 slides through the buffer block 42; A buffer spring 44 is sleeved on the limiting rod 43, and both ends of the spring 44 are connected to the buffer block 42 and the buffer groove 41 respectively.

[0039] The buffer groove 41 is formed in the mounting groove 221, providing space and guide trajectory for the sliding of the buffer block 42, and restricting the movement direction of the buffer block 42.

[0040] The buffer block 42 is slidably disposed in the buffer groove 41 and is rotatably connected to the guide roller 222. It is an intermediate component connecting the guide roller 222 and the buffer structure, and can slide along the buffer groove 41 as the guide roller 222 is subjected to force.

[0041] The limiting rod 43 is fixed in the buffer groove 41 and slides through the buffer block 42, which guides and limits the sliding of the buffer block 42, preventing the buffer block 42 from shifting or falling off during the sliding process, and ensuring the stability of the buffer movement.

[0042] A buffer spring 44 is sleeved on a limiting rod 43, with buffer blocks 42 and buffer grooves 41 connected to its two ends respectively. When the side of the circuit board applies a lateral force to the guide roller 222, the guide roller 222 pushes the buffer block 42 to compress the buffer spring 44. The elastic deformation of the spring absorbs the impact force, thus achieving buffering. When the lateral force disappears, the buffer spring 44 resets and pushes the buffer block 42 and the guide roller 222 back to their initial positions, ensuring that the guide roller 222 is always in contact with the side of the circuit board and maintaining the guiding effect.

[0043] Furthermore, a lower pressure roller 24 is rotatably mounted on the lower center of the guide frame 21.

[0044] The lower pressure roller 24 is rotatably mounted on the lower center of the guide frame 1, above the conveyor roller 11, with its axis parallel to the conveyor roller 11. During the circuit board conveying process, the lower pressure roller 24 applies downward pressure to the upper surface of the circuit board, forcing the lower surface of the circuit board to fit tightly against the lower conveyor roller 11. This avoids problems such as the circuit board being suspended or jumping due to wear of the conveyor roller, warping of the board, or uneven force, ensuring stable friction between the board and the conveyor roller, preventing conveying deviation, and improving conveying smoothness.

[0045] Furthermore, mounting blocks 25 are rotatably connected to both ends of the lower pressure roller 24, and a telescopic rod 26 is fixedly installed between the mounting block 25 and the guide frame 1. A lower pressure spring 27 is sleeved on the telescopic rod 26, and the lower pressure spring 27 is connected to the mounting block 25 and the guide frame 1 respectively.

[0046] The mounting block 25 is rotatably connected to the left and right ends of the lower pressure roller 24, serving as the mounting carrier for the lower pressure roller 24 and providing rotational support for it.

[0047] The telescopic rod 26 is fixedly installed between the mounting block 25 and the guide frame 1. It is composed of inner and outer sleeves that slide together. It guides the up and down movement of the mounting block 25 and ensures that the pressure roller 24 moves only in the vertical direction, avoiding lateral offset that affects the pressure accuracy.

[0048] A downward pressure spring 27 is sleeved on the telescopic rod 26, with its two ends connected to the mounting block 25 and the guide frame 1, respectively. The spring's elastic force continuously pushes the mounting block 25 and the downward pressure roller 24 downward, ensuring that the downward pressure roller 24 always applies a stable downward pressure to the circuit board. At the same time, when encountering circuit boards of different thicknesses, the downward pressure spring 27 can adaptively adjust the height of the downward pressure roller 24 by compression or extension, ensuring that excessive compression that could cause deformation or damage to the board is avoided while adhering to the board, thus achieving flexible downward pressure.

[0049] How to use this device: When circuit boards of different widths need to be transported, the drive component 34 of the synchronization mechanism 3 is activated, causing the drive rod 32 to rotate. Since multiple worm gears 33 are fixedly mounted on the drive rod 32, the rotation of the drive rod 32 will cause all the worm gears 33 to rotate synchronously. Each worm gear 33 meshes with the worm wheel 31 of the corresponding guide mechanism 2. The rotation of the worm gear 33 drives the worm wheel 31 to rotate, and the worm wheel 31 is fixedly mounted on one end of the bidirectional screw 23, thereby driving the bidirectional screw 23 to rotate synchronously. The surface of the bidirectional screw 23 has two sections of threads with opposite directions of rotation, which are threadedly connected to two guide blocks 22 respectively. Its rotation will drive the two guide blocks 22 to slide synchronously and symmetrically along the guide frame 21 (simultaneously moving closer or further away), thereby adjusting the distance between the two guide blocks 22 until it matches the width of the circuit board to be transported. Due to the action of the synchronization mechanism 3, the distance between the guide blocks 22 of all guide mechanisms 2 will be adjusted simultaneously and remain consistent, ensuring guiding accuracy throughout the entire process.

[0050] When the conveying roller 11 rotates, it drives the circuit board to move along the conveying direction. The two sides of the circuit board contact the guide roller 222 at the inner end of the guide block 22. The guide roller 222 rotates with the conveying direction of the circuit board, converting sliding friction into rolling friction, reducing wear on the sides of the circuit board and lowering guiding resistance. When the circuit board experiences slight shaking or uneven force, it applies a lateral force to the guide roller 222. The guide roller 222 pushes the buffer block 42 to slide along the buffer groove 41. The buffer block 42 compresses the buffer spring 44 sleeved on the limit rod 43. The elastic deformation of the buffer spring 44 absorbs the impact force, achieving a buffering effect and preventing rigid contact from damaging the circuit board or causing the board to bounce and shift. When the lateral force disappears, the buffer spring 44 resets, pushing the buffer block 42 and the guide roller 222 back to their initial positions, ensuring that the guide roller 222 always contacts the sides of the circuit board, maintaining stable guidance.

[0051] During circuit board transport, the lower pressure roller 24 at the lower center of the guide frame 1 applies downward pressure to the upper surface of the circuit board. The pressure of the lower pressure roller 24 is provided by a lower pressure spring 27, which is sleeved on a telescopic rod 26. The spring 27 is connected at both ends to the mounting block 25 and the guide frame 1, respectively, and continuously pushes the mounting block 25 and the lower pressure roller 24 downwards through elastic force. The telescopic rod 26 guides the vertical movement of the mounting block 25, ensuring that the lower pressure roller 24 moves only in the vertical direction. When encountering circuit boards of different thicknesses, the lower pressure spring 27 adaptively adjusts the height of the lower pressure roller 24 by compression or extension. This ensures that the lower surface of the circuit board is tightly fitted to the lower conveyor roller 11 while avoiding excessive compression that could cause deformation or damage to the board. It also ensures stable friction between the board and the conveyor roller, prevents transport deviation, and improves transport smoothness.

[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A plug-in type plate conveying and guiding device, comprising a conveying frame, wherein a plurality of conveying rollers are arranged on the conveying frame, characterized in that: The conveyor frame is provided with several guiding mechanisms, the guiding mechanisms including: A guide frame is disposed at the upper end of the conveyor frame; Two guide blocks are symmetrically slidably mounted on the guide frame; A bidirectional screw is rotatably mounted on the guide frame, and the two threads of the bidirectional screw are respectively threadedly connected to the two guide blocks; A synchronization mechanism is provided among the various guiding mechanisms, which is used to simultaneously drive multiple bidirectional screws to adapt to workpieces of different widths.

2. The insert-type plate conveying and guiding device according to claim 1, characterized in that: The synchronization mechanism includes: Multiple worm gears are disposed within the guide frame, and each of the multiple worm gears is fixedly assembled to one end of each of the bidirectional screws; A drive rod rotates through multiple guide frames, and the position of the drive rod corresponds to that of the worm gear; Multiple worm gears are fixedly mounted on the drive rod, and each of the multiple worm gears is matched with a specific worm wheel; A drive element is disposed on the outermost guide frame and is connected to the drive rod. The drive element is used to provide rotational force to the drive rod.

3. The insert-type plate conveying and guiding device according to claim 2, characterized in that: The guide block has an installation groove at one inner end, and a guide roller is rotatably installed in the installation groove. Both the upper and lower ends of the guide roller are provided with buffer components.

4. The insert-type plate conveying and guiding device according to claim 3, characterized in that: The buffer component includes: A buffer groove is formed within the mounting groove; A buffer block is slidably disposed within the buffer groove, and the buffer block is rotatably connected to the guide roller; A limiting rod is provided in the buffer groove, and the limiting rod slides through the buffer block; A buffer spring is sleeved on the limiting rod, and both ends of the spring are connected to the buffer block and the buffer groove, respectively.

5. The insert-type plate conveying and guiding device according to claim 3, characterized in that: A pressure roller is rotatably mounted on the lower center of the guide frame.

6. The insert-type plate conveying and guiding device according to claim 5, characterized in that: The lower pressure roller is rotatably connected to mounting blocks at both its left and right ends, and a telescopic rod is fixedly installed between the mounting block and the guide frame. A lower pressure spring is sleeved on the telescopic rod, and the lower pressure spring is connected to the mounting block and the guide frame respectively.

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