An automatic lifting dual-feeding system

Abstract

This utility model relates to an automatic lifting dual-feeding system, comprising two feeding systems. Each feeding system includes a feeding platform and a control mechanism for driving the feeding platform upwards. A moving feeding mechanism is provided on one side of each feeding system, used to alternately remove workpieces from the feeding systems. The placed workpieces have an initial feeding height. This utility model, through independent height control of the dual feeding systems and an alternating feeding linkage structure, ensures that the uppermost workpiece among the remaining workpieces always maintains a preset initial feeding height, effectively avoiding the height inconsistency problem that occurs in traditional feeding processes due to a decrease in the number of workpieces. This achieves height stability and improves feeding efficiency during continuous workpiece feeding.

Description

Technical Field

[0001] This utility model relates to the field of PCB board processing, specifically to an automatic lifting dual-feeding system. Background Technology

[0002] In traditional manufacturing automated material handling systems, single-station lifting mechanisms are often used for material supply, but they have obvious drawbacks in continuous production scenarios: single-station material handling requires waiting for material replenishment or height adjustment, resulting in frequent empty round trips of the robotic arm and extended cycle time; moreover, the material stacking height changes dynamically with material retrieval, and the robotic arm needs to adjust the Z-axis travel in real time, which is complex to control and prone to collisions due to positioning errors. Although there is a dual-bin design, most of them use fixed-height conveying or overall synchronous lifting, which cannot achieve dynamic coordination of material picking and lifting, resulting in the robot still needing to move for a long distance.

[0003] There is an urgent need for a high-efficiency dual-feeding system that can achieve independent lifting control of two workstations, automatically maintain a constant material picking height, and has dynamic collaborative functions for picking and lifting. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides an automatic lifting dual-feeding system to solve the technical problems of low efficiency in traditional single-station feeding and the inability of dual-station solutions to dynamically compensate for height changes.

[0005] The technical solution of this utility model is as follows: An automatic lifting dual-feeding system includes two feeding systems, each including a feeding platform and a control mechanism for driving the feeding platform upwards; a moving feeding mechanism is provided on one side of each of the two feeding systems, which is used to alternately remove workpieces from the feeding systems, and the placed workpieces have an initial feeding height.

[0006] Specifically, the alternating extraction includes a first stroke and a second stroke: The moving feeding mechanism takes out the workpiece from the first feeding system, and the control mechanism of the feeding system drives the feeding platform to move upward so that the uppermost workpiece returns to the initial feeding height, completing the first stroke; The moving feeding mechanism takes out the workpiece from the second feeding system, and the control mechanism of the feeding system drives the feeding platform to move upward so that the uppermost workpiece returns to the initial feeding height, completing the second stroke.

[0007] Preferably, guide mechanisms are provided on both sides of the control mechanism, and the guide mechanisms are slidably connected to the feeding platform.

[0008] Specifically, the drive plate has sliding parts at both ends near the control mechanism, and the sliding parts are movably connected to the guide mechanism.

[0009] Preferably, the feeding platform includes a support plate and a drive plate, and the control mechanism is connected to the drive plate. Connecting frames are provided on both sides of the top of the drive plate, and the support plate is installed on the two connecting frames.

[0010] Preferably, there is a gap between the inner side of the support plate and the top of the drive plate, and the gap is provided with a first sensor for detecting the feeding.

[0011] Furthermore, two opposing tripods are provided, one side of which is fixedly connected to the drive plate, and the other side of which is fixedly connected to the connecting frame.

[0012] Furthermore, the tripod is equipped with circular holes of equal diameter arranged in an arithmetic progression.

[0013] Furthermore, the connecting frame is provided with a limiting protrusion, the support plate is provided with a limiting hole corresponding to the limiting protrusion, and the top of the support plate also includes partition plates arranged in a rectangle.

[0014] Preferably, a displacement sensor corresponding to the initial height of the workpiece is provided. The displacement sensor is installed on one side of the feeding system and is set to correspond to the initial feeding height.

[0015] Preferably, a first positioning vertical plate is provided, and a first feeding system and a second feeding system are respectively connected to one side of the first positioning vertical plate.

[0016] Furthermore, a hinge is provided, and a second positioning vertical plate is provided parallel to the other side of the first positioning vertical plate. The two sides of the second positioning vertical plate are respectively connected to one end of a hinge, and the other end of the hinge is connected to the first feeding system or the second feeding system.

[0017] The advantages of this utility model based on the above solution are as follows: 1) In this utility model, each feeding system is equipped with an independent feeding platform and control mechanism. After the moving feeding mechanism takes out the workpiece from one side of the feeding system, the control mechanism on that side can drive the feeding platform to move upward in real time, actively compensate for the height difference caused by the material taking, and ensure that the uppermost workpiece among the remaining workpieces always maintains the preset initial feeding height. This effectively avoids the problem of inconsistent height caused by the reduction of the number of workpieces in the traditional feeding process, ensures the uniformity of the workpiece height before each material taking, improves the material taking positioning accuracy, and realizes the height stability and material taking efficiency improvement in the continuous feeding process of workpieces.

[0018] 2) The alternating material picking action of the mobile feeding mechanism between the two feeding systems is precisely linked with the lifting action of the corresponding feeding system. After the material is picked up, the height compensation on the corresponding side is triggered immediately, instead of using the general lifting control mode. This specifically solves the problem of height attenuation when picking up multiple workpieces continuously, greatly reduces the material picking waiting time, significantly improves the overall feeding efficiency, and provides a reliable workpiece supply guarantee for the stable operation of subsequent processes. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the workshop according to this utility model.

[0020] Figure 2 This is a first three-dimensional structural diagram of the dual feeding system of this utility model.

[0021] Figure 3 This is a schematic diagram of the second three-dimensional structure of the hidden positioning mechanism of the dual feeding system of this utility model.

[0022] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0023] Figure 5 This is a structural diagram of the displacement sensor and the L-shaped mounting bracket.

[0024] In the diagram, 100, feeding system; 100a, first feeding system; 100b, second feeding system.

[0025] 200. Feeding platform; 210. Support plate; 211. Divider plate; 220. Drive plate; 230. Connecting frame; 240. Tripod.

[0026] 300. Control mechanism; 310. First sensor; 320. Servo motor; 330. Ball screw; 340. Transmission nut.

[0027] 410 First positioning vertical plate; 420 Second positioning vertical plate; 430 Hinge.

[0028] 510. Guide rail; 520. Sliding component.

[0029] 610. Displacement sensor; 620. L-shaped mounting bracket. Detailed Implementation

[0030] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0031] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0032] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to 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 this application. Example 1

[0033] like Figures 1-5 As shown, this embodiment discloses an automatic lifting dual-feeding system, including a feeding workshop. The workshop has a first feeding system 100a and a second feeding system 100b symmetrically arranged horizontally. The two feeding systems 100 have identical structures, forming a dual-feeding unit. A movable feeding mechanism, capable of extending laterally and feeding materials to the next process, is provided on the same side of both feeding systems 100. This movable feeding mechanism can reciprocate along the arrangement direction of the two feeding systems 100, alternately retrieving stacked workpieces from the first feeding system 100a and the second feeding system 100b. The workpieces placed in both feeding systems 100 are initially maintained at a preset initial feeding height to ensure the consistency of the material retrieval position of the movable feeding mechanism. Each feeding system 100 includes a feeding platform 200 and a control mechanism 300.

[0034] The mobile feeding mechanism can be an existing vacuum adsorption assembly or gripping assembly with a multi-dimensional moving axis; or it can be a manipulator structure that can move flexibly. This application will not elaborate further, as long as it can realize the alternating feeding of workpieces on the two feeding systems 100 to the next process.

[0035] The loading platform 200 is specifically composed of a support plate 210 and a drive plate 220. The drive plate 220 is vertically arranged at the bottom, and the center of one side is connected to the ball screw 330 of the control mechanism 300 through a transmission thread to form a transmission engagement. The top left and right sides of the drive plate 220 are symmetrically provided with horizontally arranged connecting frames 230. The support plate 210 is located on the upper side of the two connecting frames 230, so that a vertical drive structure is formed between the support plate and the drive plate.

[0036] Furthermore, the two connecting frames 230 are provided with multiple limiting protrusions facing the outer side of the support plate, such as two horizontally distributed limiting protrusions. The support plate 210 is provided with limiting holes that are adapted to the limiting protrusions at the corresponding positions. The limiting protrusions are embedded in the limiting holes to achieve precise positioning of the support plate and the connecting frame, preventing the support plate 210 from shifting during the material handling process. The top of the support plate 210 is also provided with rectangularly arranged partition plates 211. The partition plates 211 are spaced apart in the horizontal direction and arranged in a rectangular shape, dividing the top surface of the support plate 210 into multiple independent workpiece placement areas or giving it a groove to accommodate the protrusion of the plate. This can partition and limit the stacked workpieces or further adapt to the protrusion structure of the plate, and prevent the workpieces from tipping over during stacking.

[0037] To facilitate the detection of whether a workpiece is placed on the loading platform 200, a certain gap is reserved between the inner side of the support plate 210 and the top of the drive plate 220. A first sensor 310 is horizontally installed on the connecting frame 230 within this gap. The first sensor 310 is an infrared beam sensor or a laser sensor. When a workpiece is placed on the support plate 210, the workpiece blocks the infrared signal or photoelectric signal, and the first sensor 310 can provide real-time feedback on the loading status.

[0038] Meanwhile, to enhance the structural strength between the connecting frame 230 and the drive plate 220, two opposing triangular frames 240 are provided on one side of the drive plate 220. One side of the triangular frame 240 is fixedly connected to the side of the drive plate 220 by bolts, and the adjacent other side is fixedly connected to the outer wall of the connecting frame 230 to form a stable triangular support structure. Multiple circular holes are also provided on the triangular frame 240. The diameter of each circular hole is arranged in an arithmetic progression along the vertical direction, which not only reduces the structural weight, but also serves as a temporary mounting hole for auxiliary positioning parts of different sizes to be added later.

[0039] The control mechanism 300 includes a ball screw 330 assembly driven by a servo motor 320. The servo motor 320 is horizontally fixed, and its output shaft is connected to the bottom end of the ball screw 330 via a coupling. The ball screw 330 is connected to a transmission nut 340, which is connected to the loading platform 200 to drive the loading platform upward to achieve vertical lifting. The guiding mechanism consists of two guide rails 510 parallel to the ball screw. The guide rails 510 are vertically fixed, and the loading platform 200 is provided with a sliding member 520 at a corresponding position. The sliding member 520 is provided with a sliding groove to form a sliding connection with the guide rails 510, so as to achieve precise guidance during the lifting process.

[0040] In addition, the system is also provided with a positioning structure for fixing and positioning the two feeding systems 100, including a first positioning vertical plate 410 and a second positioning vertical plate 420. The first positioning vertical plate 410 is vertically set inside the two feeding systems 100, and one side wall of it is connected to the control mechanism 300 of the first feeding system 100a and the second feeding system 100b respectively by bolts. This includes the horizontal fixing of the servo motor 320 on the first positioning vertical plate 410 and the vertical fixing of the ball screw 330 on the first positioning vertical plate 410, so as to realize the vertical positioning of the two feeding systems 100. The second positioning vertical plate 420 is arranged parallel to the other side of the first positioning vertical plate 410, and the left and right sides of the second positioning vertical plate 420 are respectively connected to one end of the hinge 430. The other end of the hinge 430 is connected to the drive plate of the first feeding system 100a or the second feeding system 100b, so as to realize the protection of the connection wires of electrical components such as the first sensor 310.

[0041] One side of the feeding system 100 is a positioning mechanism, and the other two sides can be equipped with displacement sensors 610 for sensing the height of the placed workpiece. For precise control of the initial feeding height of the workpiece, each feeding system 100 is equipped with a displacement sensor 610 corresponding to the initial height of the workpiece. The displacement sensor 610 adopts a high-precision laser rangefinder sensor and is specifically installed on the outside of the first feeding system 100a and the second feeding system 100b. An outer frame is provided around the feeding system 100. Two vertical frames on one side of the feeding system fix the displacement sensor 610 through L-shaped mounting brackets 620. The height of the L-shaped mounting brackets 620 is precisely adjusted according to the preset initial feeding height so that the detection end of the displacement sensor 610 is directly facing the top surface of the uppermost workpiece on the support plate 210, and the detection reference plane of the displacement sensor 610 is completely flush with the initial feeding height. After the moving feeding mechanism takes away the workpiece, if the top surface of the uppermost workpiece is lower than the initial feeding height, the displacement sensor 610 can immediately detect the height difference and send an electrical signal to the control system, triggering the servo motor 320 of the control mechanism 300 to run, driving the loading platform 200 to move upward until the displacement sensor 610 detects that the top surface of the workpiece has returned to the initial feeding height. Then, the displacement sensor 610 sends a feedback signal to stop the servo motor 320, thereby achieving real-time height compensation.

[0042] To enable the drive connection of the control signal, a control system is also set up outside the workshop. The control system is connected to the first sensor 310 through a hinge, the second positioning vertical plate 420 and other structures, and is also connected to the displacement sensor 610. The first sensor 310 receives and determines whether there is a workpiece on the support plate 210, and the displacement sensors 610 set on both sides respectively obtain the placement height of the workpiece on the corresponding feeding system 100.

[0043] During operation, the mobile feeding mechanism first moves above the first feeding system 100a, and uses a vacuum suction cup assembly or other gripping assembly to remove the topmost workpiece and transfer it to the downstream process. At this time, the displacement sensor 610 on one side detects that the workpiece height has decreased and immediately sends a feedback signal to the control system. The corresponding control mechanism 300 drives the ball screw 330 to rotate, causing the feeding platform 200 to move upward until the displacement sensor 610 detects that the workpiece height has returned to the initial feeding height and then stops. While the first feeding system 100a moves upward, the mobile feeding mechanism moves above the second feeding system 100b to repeat the material removal action. After the material removal is completed, the control mechanism 300 of the second feeding system 100b also drives the feeding platform 200 to rise to maintain the initial feeding height. While rising, the mobile feeding mechanism moves above the first feeding system 100a to remove material. This cycle is repeated to achieve alternating material supply from the two feeding systems 100. Throughout the process, the stability and efficiency of workpiece feeding are ensured through the coordinated cooperation of all components.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An automatic lifting dual-feeding system, characterized in that, It includes two feeding systems, each consisting of a feeding platform and a control mechanism for driving the feeding platform upwards; a moving feeding mechanism is provided on one side of each of the two feeding systems, which is used to alternately remove workpieces from the two feeding systems, and the placed workpieces have an initial feeding height.

2. The automatic lifting dual-feeding system according to claim 1, characterized in that, Guide mechanisms are provided on both sides of the control mechanism, and the guide mechanisms are slidably connected to the feeding platform.

3. The automatic lifting dual-feeding system according to claim 1, characterized in that, The loading platform includes a support plate and a drive plate. The control mechanism is connected to the drive plate. Connecting frames are provided on both sides of the top of the drive plate, and the support plate is installed on the two connecting frames.

4. The automatic lifting dual-feeding system according to claim 3, characterized in that, There is a gap between the inner side of the support plate and the top of the drive plate, and the gap is equipped with a first sensor for detecting the feeding.

5. The automatic lifting dual-feeding system according to claim 3, characterized in that, Two opposing tripods are provided. One side of the tripod is fixedly connected to the drive plate, and the other side of the adjacent tripod is fixedly connected to the connecting frame.

6. The automatic lifting dual-feeding system according to claim 5, characterized in that, The tripod has circular holes with diameters arranged in an arithmetic progression.

7. The automatic lifting dual-feeding system according to claim 3, characterized in that, The connecting frame is provided with a limiting protrusion, and the support plate is provided with a limiting hole corresponding to the limiting protrusion. The top of the support plate also includes partition plates arranged in a rectangle.

8. The automatic lifting dual-feeding system according to claim 1, characterized in that, A displacement sensor corresponding to the initial height of the workpiece is provided. The displacement sensor is installed on one side of the feeding system and is set to correspond to the initial feeding height.

9. The automatic lifting dual-feeding system according to claim 1, characterized in that, A first positioning vertical plate is provided, and a first feeding system and a second feeding system are respectively connected to one side of the first positioning vertical plate.

10. The automatic lifting dual-feeding system according to claim 9, characterized in that, A hinge is provided, and a second positioning vertical plate is provided parallel to the other side of the first positioning vertical plate. The two sides of the second positioning vertical plate are respectively connected to one end of a hinge, and the other end of the hinge is connected to the first feeding system or the second feeding system.

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