Automatic feeding device for press fit of printed circuit board
The self-balancing mechanism with a weight-dependent clamping system addresses the issue of inconsistent clamping force in line routing board press feeding devices, ensuring controlled and precise handling through automated mechanisms.
Patent Information
- Application Number
- CN202421979119.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The existing printed circuit board pressing automatic feeding device requires manual control of the clamping force, which is difficult to control, which can easily lead to movement or bending of the circuit board, making it inconvenient to use.
The self-balancing components are adopted, including a reel, a draw rope and a balance drop. The gravity of the balance drop drives the draw rope down. The circuit board is rotated and clamped by the reel. The clamping force is related to the gravity and gravity arm of the balance drop, reducing human influence; combined with the dual-axis motor drive assembly and auxiliary positioning plate, automatic positioning and movement are achieved.
It achieves an improvement in the controllability of the clamping force of circuit boards, reduces the influence of human factors, makes operation easier, adapts to different types of circuit boards, and improves operating efficiency and quality stability.
Smart Images
Figure CN223110261U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit board lamination equipment, in particular to an automatic feeding device for printed circuit board lamination. Background Art
[0002] A printed circuit board, also known as a printed wiring board or printed circuit board, is abbreviated as a circuit board. In the process of circuit board processing, a circuit board laminator is required. When processing a circuit board, workers usually use a feeding device to transport the circuit board directly below the lamination mechanism.
[0003] There is a prior automatic feeding device for printed circuit board lamination, including a bottom plate. An electric push rod is arranged inside the bottom plate. The left end of the electric push rod is fixedly connected with a fixed block. The upper surface of the fixed block is fixedly connected with a movable plate. The front surface of the inner wall of the movable plate is clamped with a first rotating mechanism. In this automatic feeding device for printed circuit board lamination, by setting a threaded rod, a first rotating mechanism, a second rotating mechanism, a threaded block, a limiting plate, a telescopic rod and a support plate, when workers need to move the circuit board, the workers rotate the first rotating mechanism, so that the two limiting plates drive the protective pads to approach each other and finally contact the circuit board, ensuring that the circuit board will not tilt during movement, eliminating the need for workers to adjust the circuit board. The operation is simple, facilitating the use of this feeding device by workers.
[0004] This device requires manual rotation of the first rotating mechanism to make the two limiting plates approach each other and finally contact and clamp the circuit board. During this process, manual control of the clamping force is required. If the force is too small, the circuit board is likely to move; if the force is too large, the circuit board is likely to bend. Therefore, the clamping force is not easy to control, and the use is not convenient enough.
[0005] Therefore, it is necessary to provide an automatic feeding device for printed circuit board lamination to solve the above technical problems. Summary of the Utility Model
[0006] In view of the above situation, to overcome the defects of the prior art, the utility model provides an automatic feeding device for printed circuit board lamination, which can make the clamping force of the circuit board more controllable and convenient to use.
[0007] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0008] Automatic feeding device for pressing printed circuit boards, comprising: a support table, above which two pressing mechanisms are installed. The two pressing mechanisms are arranged near the edge of the support table. Two supporting mechanisms are installed on the support table. The supporting mechanism includes a mounting frame slidably installed on the top of the support table and a driving component. The driving component is used to drive the mounting frame to move. Two clamping blocks are symmetrically and slidably installed in the mounting frame. The clamping blocks penetrate through the top of the mounting frame, and the top of the clamping blocks is lower than the top height of the circuit board. A lead screw is rotatably installed in the mounting frame. Two external threads with opposite helix directions are provided on the lead screw. The lead screw is connected to the clamping blocks. A crank is installed at one end of the lead screw. Self-balancing components are installed at both ends of the lead screw. The self-balancing component includes a winding drum sleeved on the lead screw. A pull rope is wound on the winding drum. A balance weight is installed at the lower end of the pull rope.
[0009] Preferably, a guide tube is installed on the side of the mounting frame, and the balance weight is arranged in the guide tube.
[0010] Preferably, two auxiliary positioning plates are symmetrically installed on the mounting frame, and both ends of the two auxiliary positioning plates are inclined outward.
[0011] Preferably, the driving component includes a dual-axis motor installed in the support table. The dual-axis motor has two output shafts. Screws are installed at both ends of the dual-axis motor. One end of the screw is rotatably connected to the support table. A connecting seat is installed at the bottom of the mounting frame. The connecting seat extends into the support table and is connected to the screw. The screw penetrates through the connecting seat.
[0012] Preferably, the pressing mechanism includes a hydraulic cylinder suspended above the support table, and a pressing plate is installed at the bottom end of the hydraulic cylinder.
[0013] Preferably, two brush plates are installed on the top of the support table, and the brush plates are symmetrically arranged.
[0014] Preferably, a rubber sleeve is installed between the winding drum and the lead screw, and the winding drum and the lead screw squeeze the rubber sleeve to deform.
[0015] Preferably, a first installation slot is opened at the top of the mounting frame, and the clamping block passes through the first installation slot. A second installation slot and a third installation slot are opened at the top of the support table. The connecting seat passes through the second installation slot, and the guide tube passes through the third installation slot.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] (1) The utility model sets a self - balancing component including a winding drum, a pulling rope and a balance weight. By using the gravity of the balance weight to drive the pulling rope to descend and pull the winding drum to rotate, the rotation of the winding drum drives the lead screw to rotate, so that the two clamping blocks continue to approach each other, and then clamp the circuit board. The clamping force of the circuit board is related to the gravity of the balance weight and the gravity lever arm, and is less affected by humans. The clamping force of the circuit board is more controllable and more convenient to use;
[0018] (2) The utility model sets a guide tube on the side of the mounting bracket to isolate and protect the balance weight and reduce external interference;
[0019] (3) The utility model sets two auxiliary positioning plates symmetrically installed on the mounting bracket, which can perform primary positioning on the length or width direction of the circuit board, making the pressing position of the circuit board on the top of the mounting bracket relatively fixed and not deviating too much;
[0020] (4) The utility model sets a driving component including a biaxial motor, a screw rod and a connecting seat. Through one biaxial motor, two mounting brackets can be driven to move simultaneously;
[0021] (5) The utility model sets two brush plates installed on the top of the support platform, which can clean the circuit board to be pressed and remove the sundries on its top;
[0022] (6) The utility model sets a rubber sleeve installed between the winding drum and the lead screw, so that the winding drum and the lead screw are connected with damping, which is convenient to adjust the distance between the clamping blocks to adapt to the pressing operations of circuit boards of different models. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic structural diagram of the automatic feeding device for printed circuit board pressing provided by the utility model;
[0024] Figure 2 is Figure 1 the sectional structural schematic diagram of the automatic feeding device for printed circuit board pressing shown in
[0025] Figure 3 is Figure 1 the structural schematic diagram of the driving component in the automatic feeding device for printed circuit board pressing shown in
[0026] Figure 4 is Figure 1 the structural schematic diagram of the support mechanism in the automatic feeding device for printed circuit board pressing shown in
[0027] Figure 5 is Figure 1 the side view schematic diagram of the support mechanism in the automatic feeding device for printed circuit board pressing shown in
[0028] Figure 6 The Figure 1 top view schematic diagram of the support mechanism in the automatic feeding device for laminating printed circuit boards shown in
[0029] Figure 7 The Figure 1 schematic diagram of the connection structure between the lead screw and the winding drum in the automatic feeding device for laminating printed circuit boards shown in
[0030] Figure 8 The Figure 1 schematic diagram of the structure of the support table in the automatic feeding device for laminating printed circuit boards shown in
[0031] Among them, the names corresponding to the reference numerals are: 1 - support table, 2 - support mechanism, 3 - pressing plate, 4 - mounting bracket, 5 - clamping block, 6 - lead screw, 7 - crank, 8 - winding drum, 9 - pulling rope, 10 - balance weight, 11 - guide tube, 12 - auxiliary positioning plate, 13 - dual - shaft motor, 14 - screw rod, 15 - connecting seat, 16 - hydraulic cylinder, 17 - brush plate, 18 - rubber sleeve, 19 - first installation slot, 20 - second installation slot, 21 - third installation slot, 22 - circuit board. Specific embodiments
[0032] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The implementation manners of the present utility model include but are not limited to the following embodiments.
[0033] Embodiment 1:
[0034] As Figure 1-8As shown in the figure, the automatic feeding device for pressing printed circuit boards provided by the present utility model includes: a support table 1, above which two pressing mechanisms are installed. The two pressing mechanisms are arranged near the edge of the support table 1. Two support mechanisms 2 are installed on the support table 1. The support mechanism 2 includes a mounting frame 4 slidably installed on the top of the support table 1 and a driving component. The driving component is used to drive the mounting frame 4 to move. Two clamping blocks 5 are symmetrically and slidably installed in the mounting frame 4. The clamping blocks 5 penetrate through the top of the mounting frame 4, and the top of the clamping blocks 5 is lower than the top height of the circuit board 22. A lead screw 6 is rotatably installed in the mounting frame 4. Two external threads with opposite helix directions are provided on the lead screw 6. The lead screw 6 is connected to the clamping blocks 5. A crank 7 is installed at one end of the lead screw 6. Self-balancing components are installed at both ends of the lead screw 6. The self-balancing component includes a winding drum 8 sleeved on the lead screw 6. A pull rope 9 is wound on the winding drum 8. A balance weight 10 is installed at the lower end of the pull rope 9. Multiple balance weights 10 can be hoisted according to needs. During use, rotate the crank 7 to make the lead screw 6 rotate, so that the clamping blocks 5 connected thereto move away from each other. At the same time, the rotation of the lead screw 6 drives the winding drum 8 to rotate, and the winding drum 8 rotates to wind the pull rope 9, thereby lifting the balance weight 10. Then, place the circuit board 22 to be pressed between the two clamping blocks 5 on the top of the mounting frame 4. Rotate the crank 7 in the reverse direction to make the two clamping blocks 5 approach each other and gradually approach the edge of the circuit board 22. Then release the crank 7. Under the action of the gravity of the balance weight 10, a downward force is applied to the pull rope 9, thereby pulling the winding drum 8 to rotate. The rotation of the winding drum 8 drives the lead screw 6 to rotate, so that the two clamping blocks 5 continue to approach each other, thereby clamping the circuit board 22. And the clamping force received by the circuit board 22 is related to the gravity of the balance weight 10 and the force arm, and its magnitude is controllable (less affected by human factors). When the weight and force arm of the balance weight 10 are determined, each time under the action of the balance weight 10, the clamping force of the clamping blocks 5 on different circuit boards 22 is consistent, neither too large nor too small, more balanced and consistent, without requiring the operator to have a high level of proficiency, which is convenient for beginners to use, and thus the use of the device is more convenient. After the circuit board 22 is fixed, the mounting frame 4 is moved to the lower part of the pressing mechanism at the edge of the support table 1 through the driving component. The circuit board 22 is pressed through the pressing mechanism. The pressed circuit board 22 returns to the middle of the support table 1 through the driving component, and then a new circuit board 22 is replaced to repeat the operation.
[0035] By setting a self-balancing component including a winding drum 8, a pull rope 9 and a balance weight 10, the gravity of the balance weight 10 is used to drive the pull rope 9 to descend and pull the winding drum 8 to rotate. The rotation of the winding drum 8 drives the lead screw 6 to rotate, so that the two clamping blocks 5 continue to approach each other, thereby clamping the circuit board 22. The clamping force of the circuit board 22 is related to the gravity of the balance weight 10 and the gravity force arm, and is less affected by humans. Therefore, the clamping force of the circuit board 22 is more controllable and more convenient to use.
[0036] Example 2:
[0037] As Figure 1-4 shown, a guide tube 11 is installed on the side of the mounting frame 4, and the balance weight 10 is arranged in the guide tube 11. During the lifting process of the balance weight 10, the balance weight 10 and the pull rope 9 are separated from the outside world, making its movement not easily blocked by the outside, and thus facilitating the lifting operation of the balance weight 10.
[0038] By arranging the guide tube 11 on the side of the mounting frame 4, the balance weight 10 is isolated and protected, reducing external interference.
[0039] Example 3:
[0040] As Figure 4-6 shown, two auxiliary positioning plates 12 are symmetrically installed on the mounting frame 4. The two ends of the two auxiliary positioning plates 12 are inclined outward. The distance between the two clamping plates 12 is slightly larger than the width (or length) of the circuit board 22, and the top height thereof is 0.75 - 1.5 mm lower than the top height of the circuit board 22, preventing it from affecting the pressing operation of the circuit board 22. When in use, the circuit board 22 is placed flat between the two auxiliary positioning plates 12 on the top of the mounting frame 4 to complete the primary positioning of the circuit board 22, so that the position of the circuit board 22 is relatively stable after being clamped by the two clamping plates 5 and will not deviate too much.
[0041] By arranging two auxiliary positioning plates 12 symmetrically on the mounting frame 4, the length or width direction of the circuit board 22 can be primarily positioned, making the pressing position of the circuit board 22 on the top of the mounting frame 4 relatively fixed and not deviating too much.
[0042] Example 4:
[0043] As Figure 2-4 shown, the driving assembly includes a dual-axis motor 13 installed in the support table 1. The dual-axis motor 13 has two output shafts. Screws 14 are installed at both ends of the dual-axis motor 13. One end of the screw 14 is rotatably connected to the support table 1. A connecting seat 15 is installed at the bottom of the mounting frame 4. The connecting seat 15 extends into the support table 1 and is connected to the screw 14. The screw 14 penetrates through the connecting seat 15. When in use, the PLC controller controls the dual-axis motor 13 to start, thereby driving the two screws 14 at both ends to rotate. The connecting seat 15 threadedly connected to the screw 14 moves accordingly, so as to drive the mounting frame 4 on the top of the support table 1 to slide left and right on the top of the support table 1, moving the circuit board 22 that has been pressed on the left away from the lower pressing mechanism on the left, and moving the circuit board 22 to be pressed on the right to the lower pressing mechanism on the right for pressing operation. Therefore, during the pressing period of the circuit board 22 on the right, the circuit board 22 on the left can be removed and replaced with a new circuit board 22 to be pressed, and preparatory work can be carried out during the idle time, improving the operation labor efficiency.
[0044] By providing a driving assembly including a biaxial motor 13, a screw rod 14 and a connecting seat 15, two mounting brackets 4 can be driven to move simultaneously by one biaxial motor 13.
[0045] Embodiment 5:
[0046] As Figure 1-3 shown, the pressing mechanism includes a hydraulic cylinder 16 suspended and mounted above the support table 1, and a pressing plate 3 is mounted at the bottom end of the hydraulic cylinder 16. During use, start the hydraulic cylinder 16 to extend its output shaft, which can drive the pressing plate 3 to descend, and then perform a pressing operation on the circuit board 22 to be pressed (at the top of the mounting bracket 4) below the pressing plate 3.
[0047] By providing a pressing mechanism including the pressing plate 3 and the hydraulic cylinder 16, it is convenient to press the circuit board 22.
[0048] Embodiment 6:
[0049] As Figure 1-3 shown, two brush plates 17 are mounted on the top of the support table 1, and the brush plates 17 are symmetrically arranged. When the mounting bracket 4 located in the middle of the support table 1 moves towards the edge, the top of the circuit board 22 on the top of the mounting bracket 4 contacts the bottom of the brush plate 17, and the brush plate 17 cleans the top of the circuit board 22 to remove the sundries on the top of the circuit board 22, preventing the sundries from being pressed into the circuit board 22 during pressing and affecting the quality of the circuit board 22.
[0050] By providing two brush plates 17 mounted on the top of the support table 1, the circuit board 22 to be pressed can be cleaned to remove the sundries on its top.
[0051] Embodiment 7:
[0052] As Figure 7 shown, a rubber sleeve 18 is installed between the winding drum 8 and the lead screw 6. The winding drum 8 and the lead screw 6 squeeze the rubber sleeve 18 to deform, so that a certain frictional force is maintained between the winding drum 8 and the lead screw 6, that is, the two are connected in a damped manner. The winding drum 8 and the lead screw 6 can rotate towards each other and maintain a certain rotational resistance. When pressing circuit boards 22 of different lengths or widths, it is necessary to adjust the distance between the two clamping blocks 5. During adjustment, hold the winding drum 8 and turn the crank 7. Due to the damping effect of the rubber sleeve 18, the lead screw 6 rotates, while the winding drum 8 remains stationary. The rotation of the lead screw 6 makes the clamping blocks 5 approach each other until the distance between the two clamping blocks 5 is adapted to the circuit board 22, thus facilitating the adjustment of the position of the clamping blocks 5 to adapt to the pressing operations of different types of circuit boards 22.
[0053] By installing a rubber sleeve 18 between the take-up reel 8 and the lead screw 6, a damping connection is formed between the take-up reel 8 and the lead screw 6, facilitating the adjustment of the distance between the clamping blocks 5 to adapt to the pressing operations of circuit boards 22 of different models.
[0054] Embodiment 8:
[0055] As Figure 4 and Figure 8 shown, a first installation slot 19 is formed at the top of the mounting bracket 4, the clamping block 5 passes through the first installation slot 19, a second installation slot 20 and a third installation slot 21 are formed at the top of the support platform 1, the connecting seat 15 passes through the second installation slot 20, and the guide tube 11 passes through the third installation slot 21.
[0056] By providing the first installation slot 19, the second installation slot 20, and the third installation slot 21, the installation of the clamping block 5, the guide tube 11, and the connecting seat 15 is facilitated.
[0057] Working principle: During use, turn the crank 7 to rotate the lead screw 6, thereby causing the clamping blocks 5 connected thereto to move away from each other. At the same time, the rotation of the lead screw 6 drives the take-up reel 8 to rotate, and the take-up reel 8 winds up the pulling rope 9, thereby lifting the balance weight 10. Then, place the circuit board 22 to be pressed between the two clamping blocks 5 at the top of the mounting bracket 4. Reverse the rotation of the crank 7 to make the two clamping blocks 5 approach each other and gradually close to the edge of the circuit board 22. Then release the crank 7. Under the gravitational force of the balance weight 10, a downward force is applied to the pulling rope 9, thereby driving the take-up reel 8 to rotate. The rotation of the take-up reel 8 drives the lead screw 6 to rotate, causing the two clamping blocks 5 to continue to approach each other, thereby clamping the circuit board 22. Moreover, the clamping force received by the circuit board 22 is related to the gravitational force of the balance weight 10 and the force arm, and its magnitude is controllable (less affected by human factors). After the weight and the force arm of the balance weight 10 are determined, each time under the action of the balance weight 10, the clamping force of the clamping blocks 5 on different circuit boards 22 is consistent, neither too large nor too small, more balanced and uniform, without requiring a high level of proficiency from the operator, facilitating the use by novices, and thus making the use of the device more convenient. After the circuit board 22 is fixed, the mounting bracket 4 is moved to the lower pressing mechanism below the edge of the support platform 1 through the driving assembly, and the circuit board 22 is pressed through the lower pressing mechanism. The pressed circuit board 22 returns to the middle of the support platform 1 through the driving assembly, and then a new circuit board 22 is replaced to repeat the operation.
Claims
1. An automatic feeding device for pressing a printed circuit board, characterized in that, Comprising: A support platform (1), two downward pressing mechanisms, and two support mechanisms (2); The support mechanism (2) includes a mounting frame (4) mounted on the support platform (1) and a driving assembly. The driving assembly is used to drive the mounting frame (4) to move. Two clamping blocks (5) are installed in the mounting frame (4). A lead screw (6) is installed in the mounting frame (4). Two externally threaded portions with opposite helix directions are provided on the lead screw (6). The lead screw (6) is connected to the clamping blocks (5). A crank (7) is installed at one end of the lead screw (6). Self-balancing components are provided at both ends of the lead screw (6); The self-balancing component includes a winding drum (8) sleeved on the lead screw (6). A pull rope (9) is wound on the winding drum (8). A balance weight (10) is installed at the lower end of the pull rope (9).
2. The automatic feeding device for pressing a printed circuit board according to claim 1, wherein A guide tube (11) is installed on the side of the mounting frame (4). The balance weight (10) is arranged in the guide tube (11).
3. An automatic feeding device for pressing printed circuit boards according to claim 1, characterized in that Two auxiliary positioning plates (12) are symmetrically installed on the mounting frame (4).
4. A printed circuit board lamination automatic feeding device according to claim 1, wherein, The driving assembly includes a double-shaft motor (13) installed in the support platform (1). Screws (14) are installed at both ends of the double-shaft motor (13). A connecting seat (15) is installed at the bottom of the mounting frame (4). The connecting seat (15) is connected to the screw (14).
5. The automatic feeding device for pressing a printed circuit board according to claim 1, wherein, The downward pressing mechanism includes a hydraulic cylinder (16) installed above the support platform (1). A pressing plate (3) is installed at the bottom end of the hydraulic cylinder (16).
6. The automatic feeding device for laminating a printed circuit board according to claim 1, characterized in that, Two brush plates (17) are symmetrically installed on the top of the support platform (1).
7. The automatic feeding device for pressing a printed circuit board according to claim 1, wherein A rubber sleeve (18) is installed between the winding drum (8) and the lead screw (6).