Directional screening and feeding device

Abstract

The application relates to the field of feeding equipment, in particular to a directional screening feeding device which comprises a rack, an alignment assembly and a lifting feeding table. First and second abutting fences which alternately move are arranged on the two sides of the lifting feeding table to align the workpiece, and an elastic member is connected between the rack and the second abutting fence, so that the first abutting fence is close to the lifting feeding table first and then far away from the lifting feeding table relative to the second abutting fence, so that the workpiece is kept stable after alignment, and the first abutting fence and the second abutting fence are simultaneously far away from the lifting feeding table, so that the workpiece is prevented from shaking to cause misalignment. The application has the effect that the workpiece is kept stable after alignment, and the mechanical arm is convenient for fixed-point clamping.

Description

Technical Field

[0001] This application relates to the field of screening and feeding technology, and in particular to a directional screening and feeding device. Background Technology

[0002] In automated production, robotic arms are typically used to grip and transfer workpieces at fixed points. A positioning device is needed to position the workpiece in an accurate position so that the robotic arm can grip it effectively.

[0003] In related technologies, a positioning device consists of two opposing positioning plates. When a workpiece needs to be positioned, the workpiece is first placed between the two positioning plates, then the two positioning plates move towards each other, pushing the workpiece to a predetermined position. The two positioning plates then separate, thus achieving the positioning of the workpiece.

[0004] Regarding the aforementioned technologies, after the workpiece is positioned, during the process of the two positioning plates releasing the workpiece, the two ends of the workpiece suddenly lose support and constraint, resulting in uneven force on both ends and wobbling, which leads to insufficient workpiece positioning accuracy. Summary of the Invention

[0005] In order to keep the workpiece stable after alignment and facilitate the fixed-point gripping of the robotic arm, this application provides a directional screening and feeding device.

[0006] The directional screening and feeding device provided in this application adopts the following technical solution: A directional screening and feeding device includes: A frame, on which an alignment guide rod is fixed; The alignment assembly includes a first mounting plate and a second mounting plate. The first mounting plate and the second mounting plate are slidably connected to the alignment guide rod. A first guide rail is mounted on the first mounting plate, and a second guide rail is mounted on the second mounting plate. The first guide rail and the second guide rail cooperate to align the workpiece. An elastic element is connected between the second mounting plate and the frame. A lifting platform is installed on the frame and used to place workpieces. The lifting platform is located between the first guardrail and the second guardrail. The telescopic component is used to drive the first mounting plate and the second mounting plate to slide along the alignment guide rod. One end of the telescopic component is connected to the first mounting plate, and the other end is connected to the second mounting plate. When the telescopic component extends or retracts, the first guardrail and the second guardrail move alternately. The first guardrail moves closer to the second guardrail and then moves away from the lifting platform.

[0007] By adopting the above technical solution, the alignment component is slidably connected to both ends of the alignment guide rod, and the lifting platform is set between the first and second guide rails. The workpiece is placed on the lifting platform, and a telescopic component is set between the first and second mounting plates, while an elastic component is connected between the second mounting plate and the frame.

[0008] When the telescopic component retracts and drives the first and second guide rails to slide and position the workpiece, under the elastic force of the elastic element, the first guide rail first moves closer to the lifting platform until the first mounting plate presses against the frame. Then the second guide rail moves closer to the lifting platform. The first and second guide rails press against the workpiece from both sides to achieve workpiece alignment. Then the telescopic component stops retracting and starts extending. Under the elastic force of the elastic element, the second guide rail first moves away from the lifting platform. As the second mounting plate gradually moves away from the lifting platform, the elastic element gradually changes from a compressed state to an extended state, thus hindering the second mounting plate from moving forward. At this time, the first guide rail moves away from the lifting platform, thus enabling the workpiece to remain in a fixed position after alignment, which is convenient for the robotic arm to grip at a fixed point and prevent the first and second guide rails from releasing at the same time, causing the workpiece to shake and resulting in inaccurate alignment.

[0009] Optionally, the lifting platform includes a fixed platform, a core column, and a drive assembly. The fixed platform has a clearance hole, and the core column is slidably inserted into the clearance hole. The core column is used to lift the workpiece. The end of the core column away from the workpiece is fixed to the drive assembly, and the drive assembly is used to drive the core column to lift and rotate.

[0010] By adopting the above technical solution, the core column is slidably inserted into the clearance hole of the fixed platform, and a drive assembly is installed to drive the core column to rise, fall, and rotate. After the workpiece is aligned on the top surface of the fixed platform, the workpiece is placed facing the core column. The core column rises and lifts the workpiece off the top surface of the fixed platform, thereby reducing obstructions around the workpiece and facilitating the robotic arm to grip the workpiece. When the workpiece needs to be oriented, the rotation of the core column can change the orientation of the workpiece, ensuring that all outwardly conveyed workpieces maintain the correct orientation.

[0011] Optionally, the drive assembly is located below the lifting platform. The drive assembly includes a rotary cylinder and a lifting cylinder. The core column is coaxially fixed with the output shaft of the rotary cylinder. The rotary cylinder is slidably connected to the frame. The lifting cylinder is used to drive the rotary cylinder to lift.

[0012] By adopting the above technical solution, the drive component is installed below the lifting platform, the bottom end of the core column is coaxially fixed with the output end of the rotary cylinder, and the rotary cylinder is slidably connected to the frame. Then, the lifting cylinder is set to drive the rotary cylinder to slide up and down, so that the core column can rotate horizontally and rise and fall vertically.

[0013] Optionally, the alignment component further includes a displacement sensor electrically connected to the drive component. The displacement sensor is used to receive the displacement signal of the second mounting plate to control the start and stop of the drive component. The second guide rail is provided with a mating joint at one end facing the first guide rail. When the workpiece is correctly aligned, the second guide rail moves with the second mounting plate to make the mating joint engage with one end of the workpiece. When the workpiece is oriented incorrectly, the connector abuts against the workpiece, preventing the second mounting plate from sliding to the correct position. The displacement sensor then sends a command to the drive assembly to rotate the core column.

[0014] By adopting the above technical solution, a mating joint that can be inserted and mated with the workpiece is provided at the end of the second guardrail facing the first guardrail. The mating joint can only effectively mate with the workpiece when the workpiece is correctly oriented; otherwise, it will not mate properly. Optionally, the top surface of the lifting platform has a through groove with a V-shaped cross-section, and the length direction of the through groove is parallel to the alignment guide rod.

[0015] By adopting the above technical solution, a V-shaped through groove is opened on the top surface of the lifting platform. The length direction of the through groove is parallel to the alignment guide rod. When the workpiece is placed on the lifting platform, the side wall of the through groove limits the workpiece from both sides, so that when the workpiece is subjected to the thrust of the first and second guardrails, it only moves along the sliding direction of the first and second mounting plates.

[0016] Optionally, it also includes a screening component and a conveying component. The conveying component is used to convey the workpiece from the screening component to the lifting platform. The conveying component includes a drive belt. The screening component includes a hopper. The hopper is located below one side of the drive belt. A movable plate is slidably connected inside the hopper. The top surface of the movable plate and the side wall of the hopper form a receiving groove. The movable plate slides upward to convey the workpiece onto the drive belt. The width of the top surface of the movable plate is only sufficient to accommodate one workpiece.

[0017] By adopting the above technical solution, a vertically movable plate is installed on the side of the hopper facing the transmission belt, which can transfer the workpiece from the hopper to the transmission belt. The movable plate and the side wall of the hopper form a receiving groove with a width that is only enough to accommodate one workpiece. This allows the workpieces piled up randomly in the hopper to be arranged in a single row along the transmission direction of the transmission belt, thus playing the role of screening the workpieces. The transmission belt then transfers the workpieces to the lifting platform, which facilitates the alignment component to align each workpiece in turn.

[0018] Optionally, the screening assembly further includes a height limiting block and a recovery channel. The recovery channel is connected to the hopper. The height limiting block is fixedly connected to the frame and located above the transmission belt. The height limiting block is used to guide the workpiece. Workpieces that cannot pass through the height limiting block fall back into the hopper through the recovery channel.

[0019] By adopting the above technical solution, since the workpieces face different directions when being driven on the belt, setting height limit blocks along the conveyor belt can further screen and guide the workpieces. Workpieces higher than the height limit block move forward with the conveyor belt, while the top of the workpiece collides with the height limit block, causing it to rotate on the conveyor belt. This causes the workpiece's original height to fall to a horizontal position, and the rotated workpiece's height is lower than the height limit block, allowing it to pass smoothly under the height limit block.

[0020] In addition, since the workpiece lacks horizontal constraint when moving with the transmission belt, it may fall off the transmission belt after colliding with the height limit block. Therefore, a recycling channel connected to the hopper is set up so that the workpiece that falls after colliding with the height limit block can return to the hopper.

[0021] Optionally, the top surface of the movable plate is inclined downward toward the side of the drive belt.

[0022] By adopting the above technical solution, the top surface of the movable plate is inclined downward towards the side of the transmission belt, and the bottom of the receiving groove is V-shaped, which can keep the workpiece stable in the horizontal direction when the movable plate is transporting the workpiece upward; in addition, when the top surface of the movable plate rises to the height of the transmission belt, the height difference formed by the top slope of the movable plate can make the workpiece slide or roll in the direction of the transmission belt, which is more convenient for loading.

[0023] Optionally, the bottom of the hopper is provided with a guide slope that slopes downward toward the movable plate.

[0024] By adopting the above technical solution, the guide slope facilitates the sliding or rolling of the workpieces in the hopper toward the movable plate, and facilitates the collection of the workpieces to the top of the movable plate for lifting and conveying.

[0025] Optionally, the conveying assembly further includes a pusher plate slidably connected to the frame, the pusher plate being able to block the workpiece from advancing on the transmission belt, the pusher plate being directly opposite the lifting platform and located on opposite sides of the transmission belt.

[0026] By adopting the above technical solution, the sliding of the pusher plate can change the motion state of the workpiece, pushing the workpiece to the lifting platform so that the workpiece can enter the alignment process. When the alignment of the previous workpiece is not completed, the pusher plate can also prevent the subsequent workpiece from moving forward with the transmission belt, so that the subsequent workpiece stays at the position of the lifting platform.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. The workpiece is aligned by setting an alternating first and second guide rails on both sides of the lifting platform, and an elastic element is connected between the frame and the second guide rail, so that the first guide rail moves closer to the second guide rail and then moves away from the lifting platform. This makes the workpiece stable after alignment and avoids the workpiece shaking due to the first and second guide rails moving away at the same time, which would lead to inaccurate alignment. 2. By setting a connector that matches the workpiece in one direction at the end of the second grid facing the first grid, it is possible to determine whether the workpiece orientation is correct during alignment. If the workpiece orientation is incorrect, the displacement of the second mounting plate is abnormal. Then, by setting a displacement sensor to control the rotation of the core column, the workpiece with incorrect orientation can be automatically reversed. 3. Through the cooperation of the screening component and the conveying component, the movable plate screens the workpieces, so that the workpieces can be arranged in a single row along the conveying direction of the transmission belt. Then, the transmission belt will convey the workpieces to the lifting platform in sequence, so that the alignment component can align each workpiece in sequence. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the directional screening and feeding device according to an embodiment of this application.

[0029] Figure 2 This is a structural schematic diagram of the directional screening and feeding device from another perspective in an embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the internal structure of the hopper according to an embodiment of this application.

[0031] Figure 4 This is a schematic diagram of the alignment component structure according to an embodiment of this application.

[0032] Figure 5 This is a schematic diagram of the lifting platform structure according to an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures: 10. Workpiece; 101. Insertion slot; 1. Frame; 11. Alignment guide rod; 12. Lifting guide rod; 2. Alignment assembly; 21. First mounting plate; 22. First guardrail; 23. Second mounting plate; 24. Second guardrail; 241. Connecting joint; 25. Elastic element; 26. Limiting plate; 27. Displacement sensor; 3. Lifting platform; 31. Through slot; 32. Fixed platform; 321. Clearance hole; 33. Core column; 34. Drive assembly; 341. Rotary cylinder; 342. Lifting cylinder; 4. Telescopic element; 5. Screening assembly; 51. Hopper; 511. Guide slope; 52. Movable plate; 53. Receiving trough; 54. Height limit block; 55. Recycling channel; 56. Screening cylinder; 6. Conveying assembly; 61. Drive belt; 62. Belt motor; 63. Pushing plate; 64. Pushing cylinder; 65. Baffle. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0035] This application discloses a directional screening and feeding device.

[0036] The directional screening and feeding device is equipped with a CNC system, and the operation of each component is controlled by the CNC system.

[0037] Reference Figure 1 , Figure 2 The directional screening and feeding device includes a frame 1, on which an alignment component 2, a lifting platform 3, and a screening component 5 are mounted. The lifting platform 3 is installed on one side of the frame 1, and a conveying component 6 is provided between the screening component 5 and the lifting platform 3. The conveying component 6 transports the screened workpiece 10 to the lifting platform 3. The alignment component 2 is slidably connected to the frame 1, and a telescopic component 4 is fixedly connected to the alignment component 2. The telescopic component 4 drives the alignment component 2 to approach the lifting platform 3 from both sides to align the workpiece 10. The directional screening and feeding device is used in conjunction with a robotic arm, and after the workpiece 10 is aligned, it is easier for the robotic arm to grip it at a fixed point.

[0038] Reference Figure 1 The workpiece 10 is cylindrical with different diameters at its two axial ends. Incorrect orientation of the workpiece 10 will affect subsequent processing steps; therefore, it is necessary to orient the workpiece 10 to the next workstation. In other embodiments, the workpiece 10 can also be other shapes that need to meet the requirements for directional feeding.

[0039] Reference Figure 2 , Figure 3The conveying assembly 6 includes a drive belt 61, with the alignment assembly 2 and the screening assembly 5 located at opposite ends of the drive belt 61. Each end of the drive belt 61 has a rotating shaft, and each shaft is coaxially connected to a belt motor 62. The output shafts of the two belt motors 62 rotate synchronously, driving the rotating shafts to rotate and thus driving the belt for transmission. This conveys the workpiece 10 from the screening assembly 5 to the lifting platform 3. In other embodiments, only one belt motor 62 may be used, coaxially fixed to one of the rotating shafts, driving the other rotating shaft to rotate via the drive belt 61.

[0040] Reference Figure 3 The screening assembly 5 includes a hopper 51 with a rectangular bottom and an open top. The hopper 51 is fixedly installed on the top surface of the frame 1 and located below one side of the transmission belt 61. A movable plate 52 is provided inside the hopper 51 near the transmission belt 61. The movable plate 52 is slidably connected to the hopper 51, and its surface is vertically attached to the inner wall of the hopper 51. A screening cylinder 56 is connected to the bottom of the movable plate 52, which drives the movable plate 52 to rise and fall, thereby transporting the workpieces 10 in the hopper 51 onto the transmission belt 61. A guide slope 511 is provided at the bottom of the hopper 51, sloping downwards towards the movable plate 52, to facilitate the automatic collection of cylindrical workpieces 10 onto the top surface of the movable plate 52. The top surface of the movable plate 52 and the side wall of the hopper 51 together form a receiving groove 53, wide enough to accommodate only one workpiece 10. This allows the randomly piled workpieces 10 in the hopper 51 to be arranged in a single row along the conveying direction of the transmission belt 61, thus achieving the function of screening the workpieces 10.

[0041] To improve screening and conveying efficiency and save time, multiple interlocking movable plates 52 are preferentially selected. The movable plates 52 rise progressively from low to high, conveying the workpieces 10 upwards in segments. Once a lower-level movable plate 52 delivers a workpiece 10 to the receiving groove 53 at the top of a higher-level movable plate 52, the higher-level movable plate 52 continues to rise to continue conveying the workpiece 10, while the lower-level movable plate 52 can descend to convey the next batch of workpieces 10, thus reducing the waiting time for the movable plates 52 to reset. In this embodiment, there are three movable plates 52; in other embodiments, the number of movable plates 52 can be adjusted according to requirements.

[0042] To ensure the stability of the workpiece 10 within the receiving groove 53 during the upward movement of the movable plate 52, the top surface of the movable plate 52 can be tilted downwards towards the drive belt 61, making the bottom of the receiving groove 53 V-shaped. Furthermore, when the top surface of the movable plate 52 rises to the height of the drive belt 61, the inclined surface at the top of the movable plate 52 allows the workpiece 10 to slide or roll towards the drive belt 61, thus facilitating automatic feeding.

[0043] Reference Figure 3The screening assembly 5 also includes height limiting blocks 54 and a recovery channel 55 disposed opposite each other on both sides of the transmission belt 61. The height limiting blocks 54 are horizontally placed plates, fixedly connected to the frame 1 and located above the transmission belt 61. Since the workpieces 10 face different directions when being driven on the belt, the height limiting blocks 54 in the transmission path of the transmission belt 61 can further screen and guide the workpieces 10. The bottom of the workpieces 10 that are higher than the height limiting blocks 54 moves forward with the transmission belt 61, while the top of the workpieces 10 collides with the height limiting blocks 54, which can change the placement direction of the workpieces 10 on the transmission belt 61, causing the workpieces 10 to fall from their original longitudinal placement to a transverse placement. After the rotation, the height of the workpieces 10 is lower than the height limiting blocks 54, so that they can pass smoothly under the height limiting blocks 54.

[0044] Since the workpiece 10 lacks horizontal constraint when moving with the transmission belt 61, it may fall off the transmission belt 61 after colliding with the height limit block 54. Therefore, connecting the recycling channel 55 with the hopper 51 allows the workpiece 10, which cannot pass smoothly through the height limit block 54, to fall back into the hopper 51 through the recycling channel 55.

[0045] Reference Figure 2 , Figure 3 The conveying assembly 6 also includes a pusher plate 63 slidably connected to the frame 1. The pusher plate 63 is positioned opposite the lifting platform 3 on both sides of the transmission belt 61. A pusher cylinder 64 is installed on one side of the pusher plate 63 to drive its sliding. The sliding direction of the pusher plate 63 is perpendicular to the conveying direction of the transmission belt 61. The pusher plate 63 is formed by two mutually perpendicular plates fixedly connected. The pusher plate 63 pushes the workpiece 10 onto the lifting platform 3 so that the workpiece 10 can enter the subsequent alignment stage. When the alignment of the previous workpiece 10 is not completed, the pusher plate 63 can also prevent the subsequent workpiece 10 from moving forward with the transmission belt 61, so that the subsequent workpiece 10 stays at the position of the lifting platform 3. In order to minimize the possibility of the workpiece 10 falling off the conveyor belt, baffles 65 can be set on both sides of the transmission belt 61 along the length of the transmission belt 61, thereby improving the stability of the workpiece 10 transportation.

[0046] Reference Figure 4The bottom of the lifting platform 3 is provided with alignment guide rods 11 fixedly connected to the frame 1. The two alignment guide rods 11 are parallel to each other and horizontally arranged. The alignment assembly 2 includes a first mounting plate 21 and a second mounting plate 23 slidably connected to both ends of the alignment guide rods 11. A first guardrail 22 is fixedly connected to the first mounting plate 21, and a second guardrail 24 is fixedly connected to the second mounting plate 23. The first guardrail 22 and the second guardrail 24 are coaxially arranged, and the lifting platform 3 is located between the first guardrail 22 and the second guardrail 24. By moving the first mounting plate 21 and the second mounting plate 23 toward the lifting platform 3, the first guardrail 22 and the second guardrail 24 cooperate to press against the workpiece 10 from both sides, thereby achieving the alignment of the workpiece 10. The telescopic component 4 is a cylinder. One end of the telescopic component 4 is fixedly connected to the first mounting plate 21, and the other end is fixedly connected to the second mounting plate 23. The telescopic component 4 drives the first mounting plate 21 and the second mounting plate 23 to slide along the alignment guide rods 11.

[0047] A spring is preferably connected between the second mounting plate 23 and the frame 1 and the elastic element 25 whose deformation direction is collinear with that of the alignment guide rod 11. In this embodiment, the elastic element 25 is coaxially sleeved on the alignment guide rod 11. Limiting plates 26 are fixedly connected to both ends of the alignment guide rod 11 to prevent the first mounting plate 21 and the second mounting plate 23 from slipping off the ends of the alignment guide rod 11.

[0048] When aligning workpiece 10, the telescopic component 4 retracts, driving the first guide rail 22 and the second guide rail 24 to slide. Under the elastic force of the elastic component 25, the first guide rail 22 first moves closer to the lifting platform 3 until the first mounting plate 21 presses against the side wall of the frame 1. Then, the second guide rail 24 moves closer to the lifting platform 3. The first guide rail 22 and the second guide rail 24 press against the workpiece 10 from both sides, achieving alignment of workpiece 10. Then, the telescopic component 4 stops driving. Under the elastic force of the elastic component 25, the second guide rail 24 first moves away from the lifting platform 3. During the movement, the elastic component 25 gradually changes from a compressed state to an extended state. The tension generated by the elastic component 25 hinders the second guide rail 24 from moving forward. At this time, the first guide rail 22 moves away from the lifting platform 3 again. The successive release of force by the second guide rail 24 and the first guide rail 22 can keep the workpiece 10 in a fixed position after alignment, facilitating the fixed-point gripping of the robotic arm. This is to prevent the first guardrail 22 and the second guardrail 24 from releasing simultaneously, which could cause the workpiece 10 to shake and result in misalignment.

[0049] In other embodiments, the elastic element 25 can also be disposed between the first mounting plate 21 and the frame 1, as long as it can meet the requirement of the first mounting plate 21 and the second mounting plate 23 being released one after the other.

[0050] Reference Figure 5The lifting platform 3 has a V-shaped through groove 31 on its top surface, with the length of the through groove 31 parallel to the movement direction of the workpiece 10 during alignment. When the workpiece 10 is placed on the top surface of the lifting platform 3, the sidewalls of the through groove 31 limit the movement of the workpiece 10 from both sides, ensuring that the workpiece 10 moves only along the sliding direction of the first mounting plate 21 and the second mounting plate 23 when subjected to the thrust of the first guide rail 22 and the second guide rail 24. The lifting platform 3 includes a fixed platform 32, a core column 33, and a drive assembly 34. The fixed platform 32 is mounted on the top surface of the frame 1, and a clearance hole 321 is opened in the center of the fixed platform 32. The core column 33 slides through the clearance hole 321, allowing the aligned workpiece 10 to be accurately positioned on the top surface of the core column 33. The drive assembly 34 is located below the fixed platform 32 and includes a rotary cylinder 341 and a lifting cylinder 342. The core column 33 is coaxially fixed with the output shaft of the rotary cylinder 341. The rotary cylinder 341 drives the core column 33 to rotate, which can change the orientation of the workpiece 10 if it is incorrectly oriented, thus achieving directional feeding. To facilitate rotation, the core column 33 is preferably cylindrical, and the clearance hole 321 is a circular hole with a diameter matching that of the core column 33.

[0051] A lifting guide rod 12 is fixedly connected to one side of the frame 1. A rotary cylinder 341 is slidably connected to the lifting guide rod 12. A lifting cylinder 342 is fixedly installed at the bottom end of the lifting guide rod 12. One end of the piston rod of the lifting cylinder 342 is fixedly connected to the bottom of the rotary cylinder 341. The extension and retraction of the lifting cylinder 342 can drive the rotary cylinder 341 to slide along the lifting guide rod 12, thereby driving the core column 33 to rise and fall. The rising of the core column 33 lifts the workpiece 10 away from the top surface of the fixed platform 32, thereby reducing obstructions around the workpiece 10 and making it easier for the robotic arm to grip the workpiece 10.

[0052] Reference Figure 4 , Figure 5 The workpiece 10 has a slot 101 at one end, and the end of the second guard 24 facing the first guard 22 has a connector 241. When the end of the workpiece 10 with the slot 101 faces the connector 241, during the alignment process, the second guard 24 moves with the second mounting plate 23, allowing the connector 241 to be inserted into the slot 101. To make the installation of the second guard 24 more stable and to cooperate with the slot 101, two parallel second mounting plates 23 can be arranged to strengthen the constraint on the second guard 24 and prevent it from shaking.

[0053] The alignment assembly 2 also includes a displacement sensor 27 electrically connected to the rotary cylinder 341. The displacement sensor 27 can receive displacement signals from the second mounting plate 23 to control the start and stop of the rotary cylinder 341. When the workpiece 10 is oriented incorrectly, the mating joint 241 presses against the workpiece 10, preventing the second mounting plate 23 from sliding to the correct position. The mating joint 241 cannot effectively engage with the insertion slot 101. The displacement sensor 27 sends a feedback command to drive the core column 33 to rotate, thereby automatically identifying the incorrectly oriented workpiece 10 and rotating it to the correct direction. In this embodiment, the displacement sensor 27 is embedded on the side of the second mounting plate 23 facing the frame 1. In other embodiments, the displacement sensor 27 can also be installed on the side of the frame 1 facing the second mounting plate 23.

[0054] The implementation principle of the directional screening and feeding device in this application embodiment is as follows: multiple workpieces 10 are placed into the hopper 51, and the workpieces 10 roll along the guide slope 511 to the receiving groove 53 on the top surface of the movable plate 52. The screening cylinder 56 drives the movable plate 52 to rise, and the workpieces 10 reach the height of the transmission belt 61 and move forward with the transmission belt 61. The vertically placed workpieces 10 are higher than the height limit block 54 and are blocked by the height limit block 54, falling into the hopper 51 along the recycling channel 55. The horizontally placed workpieces 10 pass smoothly through the height limit block 54, and the pushing cylinder 64 drives the pushing plate 63 to slide and push the workpieces 10, and the workpieces 10 fall to the lifting platform 3.

[0055] When the telescopic component 4 is activated, the first mounting plate 21 slides close to the lifting platform 3, the first mounting plate 21 presses against the side wall of the frame 1, the first guardrail 22 stops moving forward, the second mounting plate 23 slides close to the lifting platform 3, compressing the elastic component 25, when the workpiece 10 is facing correctly, the connector 241 is inserted into the insertion slot 101, and the alignment of the workpiece 10 is completed.

[0056] When the telescopic component 4 is closed, the elastic component 25 releases its elastic force, and the second mounting plate 23 slides away from the lifting platform 3. As the second mounting plate 23 moves, the elastic component 25 gradually changes from a compressed state to an extended state. The first mounting plate 21 slides away from the lifting platform 3, and the workpiece 10 remains stationary in the alignment position. The lifting cylinder 342 drives the core column 33 to rise, lifting the workpiece 10 to the gripping height of the robotic arm.

[0057] When the orientation of workpiece 10 is incorrect, displacement sensor 27 sends a command to first start lifting cylinder 342 to drive core column 33 to rise, then start rotating cylinder 341 to drive core column 33 to rotate 180 degrees to adjust the orientation of workpiece 10, and then perform subsequent alignment operations to achieve directional feeding.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A directional screening and feeding device, characterized in that, include: A frame (1) is fixed with a positioning guide rod (11). The alignment assembly (2) includes a first mounting plate (21) and a second mounting plate (23). The first mounting plate (21) and the second mounting plate (23) are slidably connected to the alignment guide rod (11). A first guard (22) is installed on the first mounting plate (21), and a second guard (24) is installed on the second mounting plate (23). The first guard (22) and the second guard (24) cooperate to align the workpiece (10). An elastic element (25) is connected between the second mounting plate (23) and the frame (1). A lifting platform (3) is installed on the frame (1) and used to place workpieces (10). The lifting platform (3) is located between the first guardrail (22) and the second guardrail (24). The telescopic component (4) is used to drive the first mounting plate (21) and the second mounting plate (23) to slide along the alignment guide rod (11). One end of the telescopic component (4) is connected to the first mounting plate (21), and the other end is connected to the second mounting plate (23). When the telescopic component (4) extends or retracts, the first guardrail (22) and the second guardrail (24) move alternately. The first guardrail (22) moves closer to the second guardrail (24) and then moves away from the lifting platform (3) relative to the second guardrail (24).

2. The directional screening and feeding device according to claim 1, characterized in that, The lifting platform (3) includes a fixed platform (32), a core column (33) and a drive assembly (34). The fixed platform (32) has a clearance hole (321). The core column (33) slides through the clearance hole (321). The core column (33) is used to lift the workpiece (10). The end of the core column (33) away from the workpiece (10) is fixed to the drive assembly (34). The drive assembly (34) is used to drive the core column (33) to lift and rotate.

3. The directional screening and feeding device according to claim 2, characterized in that, The drive assembly (34) is located below the lifting platform (3). The drive assembly (34) includes a rotary cylinder (341) and a lifting cylinder (342). The core column (33) is coaxially fixed with the output shaft of the rotary cylinder (341). The rotary cylinder (341) is slidably connected to the frame (1). The lifting cylinder (342) is used to drive the rotary cylinder (341) to lift.

4. The directional screening and feeding device according to claim 2, characterized in that, The alignment component (2) further includes a displacement sensor (27) electrically connected to the drive component (34). The displacement sensor (27) is used to receive the displacement signal of the second mounting plate (23) to control the start and stop of the drive component (34). The second guard plate (24) has a connector (241) at one end facing the first guard plate (22). When the workpiece (10) is aligned correctly, the second guard plate (24) moves with the second mounting plate (23) to make the connector (241) plug into and cooperate with one end of the workpiece (10). When the workpiece (10) is oriented incorrectly, the connector (241) abuts against the workpiece (10), causing the second mounting plate (23) to be unable to slide to the correct position. The displacement sensor (27) sends a feedback command to cause the drive assembly (34) to drive the core column (33) to rotate.

5. The directional screening and feeding device according to claim 1, characterized in that, The top surface of the lifting platform (3) has a through groove (31) with a V-shaped cross-section, and the length direction of the through groove (31) is parallel to the alignment guide rod (11).

6. The directional screening and feeding device according to claim 1, characterized in that, It also includes a screening component (5) and a conveying component (6). The conveying component (6) is used to convey the workpiece (10) from the screening component (5) to the lifting platform (3). The conveying component (6) includes a transmission belt (61). The screening component (5) includes a hopper (51). The hopper (51) is located below one side of the transmission belt (61). A movable plate (52) is slidably connected inside the hopper (51). The top surface of the movable plate (52) and the side wall of the hopper (51) enclose a receiving groove (53). The movable plate (52) slides upward to convey the workpiece (10) onto the transmission belt (61). The top surface of the movable plate (52) is only wide enough to accommodate one workpiece (10).

7. The directional screening and feeding device according to claim 6, characterized in that, The screening component (5) also includes a height limiting block (54) and a recycling channel (55). The recycling channel (55) is connected to the hopper (51). The height limiting block (54) is fixedly connected to the frame (1) and located above the transmission belt (61). The height limiting block (54) is used to guide the workpiece (10). The workpiece (10) that cannot pass through the height limiting block (54) falls back into the hopper (51) through the recycling channel (55).

8. The directional screening and feeding device according to claim 6, characterized in that, The top surface of the movable plate (52) is inclined downward toward the side of the transmission belt (61).

9. The directional screening and feeding device according to claim 6, characterized in that, The bottom of the hopper (51) is provided with a guide slope (511) that slopes downward toward the side of the movable plate (52).

10. The directional screening and feeding device according to claim 6, characterized in that, The conveying assembly (6) further includes a pusher plate (63) slidably connected to the frame (1). The pusher plate (63) can block the workpiece (10) from moving forward on the transmission belt (61). The pusher plate (63) is directly opposite the lifting platform (3) and is located on both sides of the transmission belt (61) respectively.

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