CCD vision amplitude modulation positioning conveying mechanism
By automatically calibrating the position of the screen printing plate through CCD vision recognition and a multi-axis moving mechanism, the problem of incorrect screen plate feeding in screen printing machines is solved, achieving precise feeding and stable conveying of the screen printing plate, and improving the transportation efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN HENGTAI TECH GRP CO LTD
- Filing Date
- 2026-02-12
- Publication Date
- 2026-07-03
Smart Images
Figure CN121672137B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of screen printing technology, specifically to a CCD vision amplitude modulation positioning and conveying mechanism. Background Technology
[0002] The CCD vision alignment system captures target images with a camera, compares them with preset standard images, calculates the positional deviation, and guides the actuator to precisely adjust the position, achieving high-precision automatic alignment. It can also be used as a pre-feeding application system to identify target size and use it as a reference for subsequent amplitude adjustment.
[0003] Currently, CCD vision systems are commonly used in screen printing machines and other equipment used in sheet metal production to detect the size of the screen, enabling automatic adjustment of the width at the conveyor mechanism. This reduces manual adjustment time and minimizes downtime when changing different screen sheets. However, while the feeding mechanism can be adjusted according to the CCD vision system, it cannot guarantee the correct positioning of the screen sheet during feeding. The screen sheet must be directly facing the conveyor belt inlet during feeding; if the screen sheet is tilted, it cannot align with the inlet, making feeding difficult. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a CCD vision amplitude modulation positioning and conveying mechanism, which can effectively solve the problems of the prior art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] This invention discloses a CCD vision amplitude modulation positioning conveying mechanism, including a conveyor frame, a transfer frame, and a top frame. Two sets of conveyor frames are provided, and each set is equipped with an adjustable width feeding mechanism. A transfer frame is located in front of the conveyor frame, and a transfer mechanism is installed inside the transfer frame. A lifting frame is mounted on the lower side of the transfer frame via a lifting mechanism. A tensioning roller is mounted on the lower side of the lifting frame via a tensioning assembly. A horizontally rotatable rotating frame is located at the upper end of the lifting frame, and a fixed seat is mounted on the rotating frame via a translation mechanism. The upper end of the fixed seat is connected by an expansion... The conveying mechanism is equipped with ball bearings for lifting the screen printing plate. The upper side of the conveyor frame is equipped with a CCD vision recognition device and a supplementary lighting component for visual recognition. A top frame is provided above the conveyor frame. A cross frame is installed on the lower side of the top frame via an X-axis moving mechanism. An electric push rod is installed at the lower end of the cross frame via a Z-axis moving mechanism. A movable frame is installed at the lower end of the electric push rod via a rotation moving mechanism. Two sets of clamps are installed on the lower side of the movable frame via a spacing adjustment mechanism. A limiting clamping mechanism for calibrating and aligning the screen printing plate is provided on the opposite side of the two sets of clamps.
[0009] Furthermore, the feeding mechanism includes symmetrically rotatably mounted single-sided conveyor wheels between the conveyor frames, with single-sided conveyor belts mounted on both sets of single-sided conveyor wheels. A conveyor wheel shaft is fixedly connected to the end of each single-sided conveyor wheel, and a transmission wheel is fixedly mounted on the conveyor wheel shaft. A transmission belt is mounted on both sets of transmission wheels. A first drive motor is fixedly mounted on the conveyor frame, and the output end of the first drive motor is fixedly connected to the outer end of the conveyor wheel shaft. Two sets of base frames are symmetrically arranged on the lower sides of the two sets of conveyor frames, and a first sliding groove is opened on the upper side of the base frame. Rotation occurs within the first sliding groove. A first screw is installed, and a second transmission wheel is fixedly connected to the end of the first screw. A second transmission belt is installed on two sets of the second transmission wheels. A second drive motor is fixedly installed at the end of one set of the base frame, and the output end of the second drive motor is connected to the outer end of one set of the first screw. A first threaded sleeve is threaded onto the first screw. A first slider is slidably arranged in the first groove, and the first slider is fixedly installed on the first threaded sleeve. The upper ends of the two sets of first sliders are fixedly connected to the lower ends of one set of the conveyor frame, and the lower end of the other set of the conveyor frame is fixedly connected to the upper ends of the two sets of base frames.
[0010] Furthermore, the conveying mechanism includes positioning conveying rollers symmetrically rotated between two sets of conveying frames, and conveyor belts are installed on the two sets of positioning conveying rollers. A transmission wheel three is fixedly installed on the outer end of the positioning conveying roller, and a transmission belt three is installed on the two sets of transmission wheels three. A third drive motor is fixedly installed on the outer side of the conveying frame, and the output end of the third drive motor is fixedly connected to the end shaft of one set of positioning conveying rollers. The lifting mechanism includes a vertical frame fixedly installed at the lower end of the two sets of conveying frames, and a pneumatic push rod is fixedly installed on the outer wall of the vertical frame. A connecting seat is fixedly connected to the piston rod end of the pneumatic push rod. Connecting frames are symmetrically slidably arranged on the two sets of vertical frames, and the opposite ends of the two sets of connecting frames are fixedly connected to the two ends of the lifting frame, and the ends of the two sets of connecting frames that are far apart from each other are fixedly connected to the two sets of connecting seats.
[0011] Furthermore, the tensioning assembly includes positioning rods symmetrically and movably inserted on both sides of the lower end of the lifting frame, and a positioning frame is fixedly connected to the lower end of the positioning rod. A tensioning spring is vertically arranged between the positioning frame and the lifting frame, and the tensioning spring is movably sleeved on the positioning rod. The two sets of positioning frames are symmetrically and rotatably installed at both ends of the tensioning roller, and the tensioning roller is located inside the lower end of the conveyor belt.
[0012] Furthermore, a first rotary motor is fixedly installed on the inner side of the upper end of the lifting frame, a positioning shaft is rotatably installed on the upper side of the lifting frame, and the lower end of the positioning shaft is fixedly connected to the output end of the first rotary motor. The upper end of the positioning shaft is fixedly connected to one side of the lower end of the rotating frame. The translation mechanism includes a second slide groove that is laterally opened in the rotating frame. A second screw is rotatably installed inside the second slide groove. A fourth drive motor is fixedly installed on the outer end of the rotating frame, and the output end of the fourth drive motor is fixedly connected to one end of the second screw. A second slider is slidably connected in the second slide groove, and the second slider is threaded onto the second screw. The second slider is fixedly connected to the fixed seat.
[0013] Furthermore, the expansion mechanism includes a fifth drive motor fixedly installed at the lower end of the fixed base, and a vertical screw is fixedly connected to the output end of the fifth drive motor. The vertical screw is vertically rotatably installed at the upper end of the fixed base. A threaded sleeve block is threadedly connected to the vertical screw. A support rod is hinged to the outer side of the fixed base in a circular array, and a hinge rod is hinged to the inner side of the support rod. The lower end of the hinge rod is hinged to the threaded sleeve block, and a ball bearing is movably installed at the upper end of the support rod.
[0014] Furthermore, the X-axis moving mechanism includes first lead screws symmetrically rotatably mounted on both sides of the lower end of the top frame. The outer ends of the two sets of first lead screws are fixedly mounted with transmission wheels four, and transmission belts four are mounted on the two sets of transmission wheels four. A sixth drive motor is fixedly mounted on the outer side of the top frame, and the output end of the sixth drive motor is connected to the outer end of one set of first lead screws. First lead screw guide blocks are threaded onto the two sets of first lead screws, and the first lead screw guide blocks slide within the top frame. The lower ends of the two sets of first lead screw guide blocks are fixedly connected to the upper ends of the cross frame on both sides.
[0015] Furthermore, the Z-axis moving mechanism includes a second lead screw rotatably mounted inside the lower side of the crossbeam, and a second lead screw guide block is threaded onto the second lead screw. The second lead screw guide block slides inside the crossbeam. The lower end of the second lead screw is fixedly connected to the upper end of the electric push rod. A seventh drive motor is fixedly connected to the outer wall of the crossbeam, and the output end of the seventh drive motor is fixedly connected to the outer end of the second lead screw.
[0016] Furthermore, the rotary movement mechanism includes a connecting block fixedly installed at the movable end of the electric push rod, and a transmission shaft is rotatably installed at the lower end of the connecting block. The lower end of the transmission shaft is fixedly connected to the upper end of the movable frame. A first gear is fixedly installed on the transmission shaft. A second rotary motor is fixedly installed at the upper end of the connecting block, and a second gear that meshes with the first nut guide block is fixedly installed on the output shaft of the second rotary motor.
[0017] Furthermore, the spacing adjustment mechanism includes a third lead screw that rotates at the lower end of the movable frame. Two sets of third lead screw guide blocks are symmetrically installed on the third lead screw via opposing threads, and the two sets of third lead screw guide blocks slide within the movable frame. Two sets of clamps are symmetrically fixedly connected to the lower ends of the two sets of third lead screw guide blocks. An eighth drive motor is fixedly installed at the outer end of the movable frame, and the output end of the eighth drive motor is fixedly connected to one end of the third lead screw.
[0018] Furthermore, the limiting clamping mechanism includes connecting shafts symmetrically rotatably mounted on the end of the clamping seat. A ninth drive motor is fixedly mounted on the lower end of the connecting shaft, and the output end of the ninth drive motor is fixedly connected to the lower end of a set of connecting shafts. Transmission gears are mounted on the lower ends of both sets of connecting shafts, and the two sets of transmission gears mesh with each other. A support rod is fixedly sleeved on both sets of connecting shafts. A movable groove is opened at the end of the support rod, and a movable rod is movably inserted into the opening of the movable groove. A pressure sensor assembly is mounted on the bottom wall of the movable groove. A shaft seat is fixedly connected to the outer end of the movable rod, and a return spring is provided between the shaft seat and the support rod. The return spring is movably sleeved on the rod portion of the movable rod. A positioning pin is rotatably mounted on the shaft seat, and a clamping wheel is fixedly connected to the lower end of the positioning pin.
[0019] (III) Beneficial Effects
[0020] Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects:
[0021] This invention uses a conveyor belt as a front conveyor belt. After the screen panel falls onto the conveyor belt, its size, position, and placement can be visually detected by a CCD vision recognition device. Then, the rotation and translation of the fixed base are used to align the ball bearings with the lower side of the screen panel. The lifting mechanism lifts it up, and then, combined with the X and Z axis moving mechanisms, the rotation moving mechanism, and the electric push rod, four sets of clamping rollers are driven to fit against both sides of the screen panel, clamping and lifting it to the two sets of single-sided conveyor belts at the rear, thus realizing the feeding process. The feeding process is stable, and the orientation of the screen panel is automatically calibrated, ensuring accurate placement and smooth feeding. Combined with the CCD vision detection capability, the conveying capacity and accuracy of the feeding mechanism are greatly improved, reducing equipment failures and transportation blockages caused by placement errors. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of the present invention;
[0024] Figure 2 This is a side view of the structure of the present invention;
[0025] Figure 3 This is a schematic diagram of the feeding mechanism in this invention;
[0026] Figure 4 This is a partial cross-sectional schematic diagram of the feeding mechanism of the present invention;
[0027] Figure 5 This is a schematic cross-sectional view of the base frame in the feeding mechanism of the present invention;
[0028] Figure 6 This is a schematic diagram of the structure of the conveying mechanism in this invention;
[0029] Figure 7 This is a schematic diagram of the lifting mechanism in this invention;
[0030] Figure 8 This is a schematic diagram of the tensioning component in this invention;
[0031] Figure 9This is a schematic cross-sectional view of the translation mechanism in this invention;
[0032] Figure 10 This is a schematic diagram of the expansion mechanism in this invention;
[0033] Figure 11 This is a bottom view of the structure at the top frame in this invention;
[0034] Figure 12 This is a schematic diagram of the structure of the X-axis moving mechanism in this invention;
[0035] Figure 13 This is a schematic cross-sectional view of the rotating and moving mechanism in this invention;
[0036] Figure 14 This is a schematic diagram of the structure of the spacing adjustment mechanism in this invention;
[0037] Figure 15 This is a schematic cross-sectional view of the limiting clamping mechanism in this invention.
[0038] The labels in the diagram represent: 1. Conveyor frame; 2. Single-sided conveyor wheel; 3. Single-sided conveyor belt; 4. Conveyor wheel axle; 5. Drive wheel one; 6. Drive belt one; 7. First drive motor; 8. Base frame; 9. First chute; 10. First screw; 11. Drive wheel two; 12. Drive belt two; 13. Second drive motor; 14. First screw sleeve; 15. First slider; 16. Conveyor frame; 17. Positioning conveyor roller; 18. Conveyor belt; 19. Drive wheel three; 20. 21. Transmission belt; 22. Third drive motor; 23. Stand; 24. Pneumatic push rod; 25. Connecting seat; 26. Connecting frame; 27. Lifting frame; 28. Positioning rod; 29. Positioning frame; 30. Tensioning spring; 31. Tensioning roller; 32. First rotary motor; 33. Positioning shaft; 34. Rotating frame; 35. Second slide rail; 36. Second screw; 37. Fourth drive motor; 38. Second screw sleeve; 39. Second slider; 40. Fixed seat; 51. Fifth drive motor; 21. Third drive motor; 22. Stand; 23. Pneumatic push rod; 24. Connecting seat; 25. Connecting frame; 26. Lifting frame; 27. Positioning rod; 28. Positioning frame; 29. Tensioning spring; 30. Tensioning roller; 31. First rotary motor; 32. Positioning shaft; 33. Rotating frame; 44. Second slide rail; 35. Second screw; 36. Fourth drive motor; 37. Second screw sleeve; 38. Second slider; 39. Fixed seat; 40. Fifth drive motor; 41. Vertical screw; 42. Threaded sleeve block; 43. Support rod; 44. Hinge rod; 45. Ball bearing; 46. CCD vision recognition device; 47. Fill light assembly; 48. Top frame; 49. First lead screw; 50. Transmission wheel four; 51. Transmission belt four; 52. Sixth drive motor; 53. First lead screw nut guide block; 54. Horizontal frame; 55. Second lead screw; 56. Second lead screw nut guide block; 57. Seventh drive motor; 58. Electric push rod; 59. Connecting block ; 60. Drive shaft; 61. Movable frame; 62. First gear; 63. Second rotary motor; 64. Second gear; 65. Third lead screw; 66. Third lead screw nut guide block; 67. Eighth drive motor; 68. Clamping seat; 69. Connecting shaft; 70. Ninth drive motor; 71. Transmission gear; 72. Frame rod; 73. Movable groove; 74. Movable rod; 75. Pressure sensor assembly; 76. Shaft seat; 77. Return spring; 78. Positioning pin; 79. Clamping wheel. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0040] Please see Figure 1-15An embodiment of the present invention provides a CCD vision amplitude adjustment positioning conveying mechanism, including a conveying frame 1, a transfer frame 16, and a top frame 48. Two sets of conveying frames 1 are provided, and each set of conveying frames 1 is equipped with an adjustable width feeding mechanism. A transfer frame 16 is located in front of the conveying frame 1, and a transfer mechanism is installed inside the transfer frame 16. A lifting frame 26 is mounted on the lower side of the transfer frame 16 via a lifting mechanism. A tensioning roller 30 is mounted on the lower side of the lifting frame 26 via a tensioning assembly. A horizontally rotatable rotating frame 33 is provided at the upper end of the lifting frame 26, and a fixed seat 39 is provided on the rotating frame 33 via a translation mechanism. The upper end of the fixed seat 39 is... The expansion mechanism is equipped with ball bearings 45 for lifting the screen plate. The upper side of the conveyor frame 16 is equipped with a CCD vision recognition device 46 and a supplementary lighting component 47 for visual recognition. A top frame 48 is provided above the conveyor frame 16. A cross frame 54 is installed on the lower side of the top frame 48 through an X-axis moving mechanism. An electric push rod 58 is installed on the lower end of the cross frame 54 through a Z-axis moving mechanism. A movable frame 61 is installed on the lower end of the electric push rod 58 through a rotation moving mechanism. Two sets of clamps 68 are installed on the lower side of the movable frame 61 through a spacing adjustment mechanism. A limiting clamping mechanism for calibrating and aligning the screen plate is provided on the opposite side of the two sets of clamps 68.
[0041] As a preferred embodiment of this example, Figure 3 , Figure 4 and Figure 5 As shown,
[0042] The feeding mechanism includes symmetrically rotatably mounted single-sided conveyor wheels 2 between conveyor frames 1, with single-sided conveyor belts 3 mounted on the front and rear sets of single-sided conveyor wheels 2. A conveyor wheel shaft 4 is fixedly connected to the end of each single-sided conveyor wheel 2, and a transmission wheel 5 is fixedly mounted on the conveyor wheel shaft 4. A transmission belt 6 is mounted on the front and rear sets of transmission wheels 5. A first drive motor 7 is fixedly mounted on the conveyor frame 1, and the output end of the first drive motor 7 is fixedly connected to the outer end of the conveyor wheel shaft 4. Two sets of base frames 8 are symmetrically arranged on the lower side of the two sets of conveyor frames 1, and a first sliding groove 9 is opened on the upper side of the base frame 8. A first screw 10 is rotatably mounted within the first sliding groove 9. The end of the first screw 10 is fixedly connected to a transmission wheel 11, and a transmission belt 12 is installed on the two sets of transmission wheels 11. The end of a set of base frames 8 is fixedly installed with a second drive motor 13, and the output end of the second drive motor 13 is connected to the outer end of a set of first screws 10. A first threaded sleeve 14 is threaded on the first screw 10. A first slider 15 is slidably arranged in the first groove 9, and the first slider 15 is fixedly installed on the first threaded sleeve 14. The upper ends of the two sets of first sliders 15 are fixedly connected to the lower ends of a set of conveyor frames 1 on both sides. The lower end of the other set of conveyor frames 1 is fixedly connected to the upper ends of the two sets of base frames 8.
[0043] In this structure, the second drive motor 13 drives the two sets of first screws 10 to rotate synchronously, which in turn causes the first screw sleeve 14 to drive the two sets of first sliders 15 to move laterally in the first slide groove 9 through the thread action. This allows the distance between one set of conveyor frames 1 and the other set of conveyor frames 1 to change, thereby adapting to wire mesh plates of different widths. The single-sided conveyor belt 3 on the opposite side of the two sets of conveyor frames 1 can support the two sides of the wire mesh plate and achieve conveying through the drive of the first drive motor 7, thereby meeting the conveying and positioning requirements of the processing.
[0044] As a preferred embodiment of this example, Figure 6 and Figure 7 As shown, the conveying mechanism includes positioning conveying rollers 17 symmetrically rotated and installed between two sets of conveying frames 16, and conveyor belts 18 are installed on the two sets of positioning conveying rollers 17. Transmission wheels 19 are fixedly installed on the outer ends of the positioning conveying rollers 17, and transmission belts 20 are installed on the two sets of transmission wheels 19. A third drive motor 21 is fixedly installed on the outer side of the conveying frame 16, and the output end of the third drive motor 21 is fixedly connected to the end shaft of one set of positioning conveying rollers 17. The lifting mechanism includes a vertical frame 22 fixedly installed at the lower end of the two sets of conveying frames 16, and a pneumatic push rod 23 is fixedly installed on the outer wall of the vertical frame 22. A connecting seat 24 is fixedly connected to the piston rod end of the pneumatic push rod 23. Connecting frames 25 are symmetrically slidably arranged on the two sets of vertical frames 22, and the opposite ends of the two sets of connecting frames 25 are fixedly connected to the two ends of the lifting frame 26, and the ends of the two sets of connecting frames 25 that are far apart from each other are fixedly connected to the two sets of connecting seats 24.
[0045] This structure is used to drive the screen plate on the receiving surface of the conveyor belt 18 to move by the third drive motor 21, thereby achieving the effect of conveying materials. The transmission wheel 19 and the transmission belt 20 cooperate to allow the two sets of positioning conveyor rollers 17 to rotate synchronously, thereby ensuring the smooth movement of the conveyor belt 18. The lifting mechanism can drive the tension roller 30 and the ball bearings 45 to move upward synchronously by the pneumatic push rod 23. This allows the ball bearings 45 to lift the upper side of the conveyor belt 18 and the screen plate placed on it, while the tension roller 30 can release the lower support of the conveyor belt 18 to prevent the conveyor belt 18 from being stretched and deformed and damaged.
[0046] As a preferred embodiment of this example, Figure 7 and Figure 8 As shown, the tensioning assembly includes positioning rods 27 symmetrically and movably inserted on both sides of the lower end of the lifting frame 26, and a positioning frame 28 is fixedly connected to the lower end of the positioning rods 27. A tensioning spring 29 is vertically arranged between the positioning frame 28 and the lifting frame 26, and the tensioning spring 29 is movably sleeved on the positioning rods 27. Two sets of positioning frames 28 are symmetrically and rotatably installed at both ends of the tensioning roller 30, and the tensioning roller 30 is located inside the lower end of the conveyor belt 18.
[0047] This structure is used to support the lower half of the conveyor belt 18 via the tension roller 30, and can be tensioned by the elastic force of the tension spring 29 to reduce the deformation of the conveyor belt 18 caused by thermal expansion and contraction, which would affect the conveying effect. At the same time, it can also reduce the stress on the tension roller 30 after the ball bearings 45 rise up and push the upper side of the conveyor belt 18.
[0048] As a preferred embodiment of this example, Figure 8 and Figure 9 As shown, a first rotary motor 31 is fixedly installed on the inner side of the upper end of the lifting frame 26. A positioning shaft 32 is rotatably installed on the upper side of the lifting frame 26, and the lower end of the positioning shaft 32 is fixedly connected to the output end of the first rotary motor 31. The upper end of the positioning shaft 32 is fixedly connected to one side of the lower end of the rotating frame 33. The translation mechanism includes a second slide groove 34 that is laterally opened in the rotating frame 33. A second screw 35 is rotatably installed inside the second slide groove 34. A fourth drive motor 36 is fixedly installed on the outer end of the rotating frame 33, and the output end of the fourth drive motor 36 is fixedly connected to one end of the second screw 35. A second slider 38 is slidably connected in the second slide groove 34, and the second slider 38 is threaded onto the second screw 35. The second slider 38 is fixedly connected to the fixed seat 39.
[0049] This structure allows the rotating frame 33 to rotate inside the conveyor belt 18. In conjunction with the translation mechanism, the fixed seat 39 can reach various angles and positions within the circumference, thereby facilitating the positioning and lifting of the wire mesh plates at different positions to ensure stability and centering during lifting.
[0050] As a preferred embodiment of this example, Figures 7 to 10 As shown, the expansion mechanism includes a fifth drive motor 40 fixedly installed at the lower end of the fixed base 39, and a vertical screw 41 is fixedly connected to the output end of the fifth drive motor 40. The vertical screw 41 is vertically rotatably installed at the upper end of the fixed base 39. A threaded sleeve block 42 is threadedly connected to the vertical screw 41. A support rod 43 is hinged to the outer side of the fixed base 39 in an annular array, and a hinge rod 44 is hinged to the inner side of the support rod 43. The lower end of the hinge rod 44 is hinged to the threaded sleeve block 42, and a ball bearing 45 is movably installed at the upper end of the support rod 43.
[0051] This structure is used to drive the vertical screw 41 to rotate via the fifth drive motor 40, which in turn causes the threaded sleeve 42 to move up and down through the thread action. This allows the hinge rod 44 to drive the support rod 43 to open or close, thereby changing the spacing of the upper annular array of balls 45. This allows it to adapt to different sizes of wire mesh plates, ensuring that the bottom surface of the wire mesh plate can be well supported when it is lifted, so that its four sides can be suspended in the air for subsequent clamping and alignment. The spherical rolling of the balls 45 can prevent them from causing scratch damage to the inner surface of the conveyor belt 18.
[0052] As a preferred embodiment of this example, Figure 11 and Figure 12 As shown, the X-axis moving mechanism includes first lead screws 49 symmetrically rotated and mounted on both sides of the lower end of the top frame 48. Transmission wheels 4 50 are fixedly mounted on the outer ends of the two sets of first lead screws 49, and transmission belts 4 51 are mounted on the two sets of transmission wheels 4 50. A sixth drive motor 52 is fixedly mounted on the outer side of the top frame 48, and the output end of the sixth drive motor 52 is connected to the outer end of one set of first lead screws 49. First lead screw guide blocks 53 are threaded onto the two sets of first lead screws 49, and the first lead screw guide blocks 53 slide within the top frame 48. The lower ends of the two sets of first lead screw guide blocks 53 are fixedly connected to the upper ends of the cross frame 54.
[0053] This structure is used to drive the movable frame 61 to move laterally above the conveyor belt 18 via the drive of the sixth drive motor 52, thereby changing the lateral position of the clamping wheel 79 to adapt to clamping the wire mesh plate at different positions.
[0054] As a preferred embodiment of this example, Figures 11 to 13 As shown, the Z-axis moving mechanism includes a second lead screw 55 rotatably mounted inside the lower side of the crossbar 54, and a second lead screw nut guide block 56 is threadedly connected to the second lead screw 55. The second lead screw nut guide block 56 slides inside the crossbar 54. The lower end of the second lead screw 55 is fixedly connected to the upper end of the electric push rod 58. A seventh drive motor 57 is fixedly connected to the outer wall of the crossbar 54, and the output end of the seventh drive motor 57 is fixedly connected to the outer end of the second lead screw 55.
[0055] This structure is used to drive the lower movable frame 61 to move perpendicular to the moving direction of the conveyor belt 18 by the drive of the seventh drive motor 57. In conjunction with the X-axis moving mechanism, the clamping wheel 79 can touch the wire mesh plate placed at any position on the conveyor belt 18, so as to ensure the flexibility and variability of the movable clamping method.
[0056] As a preferred embodiment of this example, such as Figure 13As shown, the rotary movement mechanism includes a connecting block 59 fixedly installed at the movable end of the electric push rod 58, and a drive shaft 60 is rotatably installed at the lower end of the connecting block 59. The lower end of the drive shaft 60 is fixedly connected to the upper end of the movable frame 61. A first gear 62 is fixedly installed on the drive shaft 60. A second rotary motor 63 is fixedly installed at the upper end of the connecting block 59, and a second gear 64 that meshes with the first nut guide block 53 is fixedly installed on the output shaft of the second rotary motor 63.
[0057] This structure is used to drive the movable frame 61 to rotate via the second rotary motor 63. In conjunction with the lifting and lowering driven by the electric push rod 58, the clamping angle and height of the opposing clamping wheels 79 can be changed to achieve clamping and placing, thereby adapting to the clamping and placing operation of screen plates at different placement angles.
[0058] As a preferred embodiment of this example, Figures 11 to 14 As shown, the spacing adjustment mechanism includes a third lead screw 65 that rotates at the lower end of the movable frame 61. Two sets of third lead screw guide blocks 66 are symmetrically installed on the third lead screw 65 through opposing threads, and the two sets of third lead screw guide blocks 66 slide within the movable frame 61. Two sets of clamps 68 are symmetrically fixedly connected to the lower ends of the two sets of third lead screw guide blocks 66. An eighth drive motor 67 is fixedly installed at the outer end of the movable frame 61, and the output end of the eighth drive motor 67 is fixedly connected to one end of the third lead screw 65.
[0059] This structure is used to drive two sets of third wire guide blocks 66 to open and close through the drive of the eighth drive motor 67, thereby allowing the clamping wheels 79 on the lower side of the two sets of clamping seats 68 to adjust the distance, so that the clamping wheels 79 can be adapted to clamping and placing wire mesh plates of different sizes.
[0060] As a preferred embodiment of this example, Figure 11 , Figure 14 and Figure 15 As shown, the limiting clamping mechanism includes connecting shafts 69 symmetrically rotatably mounted on the ends of clamping seats 68. A ninth drive motor 70 is fixedly mounted on the lower end of the connecting shafts 69, and the output end of the ninth drive motor 70 is fixedly connected to the lower end of a set of connecting shafts 69. Transmission gears 71 are mounted on the lower ends of both sets of connecting shafts 69, and the two sets of transmission gears 71 mesh with each other. A support rod 72 is fixedly sleeved on both sets of connecting shafts 69. A movable groove 73 is opened at the end of the support rod 72, and a movable rod 74 is movably inserted into the opening of the movable groove 73. A pressure sensor assembly 75 is installed on the bottom wall of the movable groove 73. A bearing seat 76 is fixedly connected to the outer end of the movable rod 74, and a return spring 77 is provided between the bearing seat 76 and the support rod 72. The return spring 77 is movably sleeved on the rod part of the movable rod 74. A positioning pin 78 is rotatably mounted on the bearing seat 76, and a clamping wheel 79 is fixedly connected to the lower end of the positioning pin 78.
[0061] This structure is used to drive two sets of clamping rollers 79 to open through the ninth drive motor 70. The clamping rollers 79 on the lower side of another set of connecting shafts 69 can provide positioning support for both sides of the screen plate. When the two sets of clamping rollers 79 are open, the screen plate can be straightened. In addition, the four sets of clamping rollers 79 can clamp and position the screen plate to achieve the clamping and placement of the screen plate and the calibration of the angle.
[0062] Working principle: In use, the screen printing plate is first placed on the conveyor belt 18. Then, the third drive motor 21 is started, which drives the positioning conveyor roller 17 to rotate. The positioning conveyor roller 17 drives the transmission belt 20 to rotate through the transmission wheel 19, causing the two sets of positioning conveyor rollers 17 to rotate synchronously. This causes the conveyor belt 18 to move, moving the screen printing plate backward. After moving it below the CCD vision recognition device 46, the third drive motor 21 is stopped, positioning the screen printing plate below the CCD vision recognition device 46. Then, the CCD vision recognition device 46 performs visual recognition and measurement. The dimensions are measured, and the first rotary motor 31 and the fourth drive motor 36 are started. After the dimensions are measured, the second drive motor 13 is controlled to drive the transmission wheel 11 to rotate according to the feed width. This causes the transmission wheel 11 to drive another set of transmission wheels 11 to rotate through the transmission belt 12. This causes the two sets of first screws 10 to rotate synchronously, so that the first screw sleeve 14 drives the first slider 15 to slide in the first slide groove 9 through the thread action. This causes one side of the conveyor frame 1 to shift, changing the distance between the two sets of conveyor frames 1, so that the distance between the two sets of single-sided conveyor belts 3 can be adapted to the wire mesh plate that is about to be fed.
[0063] Simultaneously, the first rotary motor 31 drives the positioning shaft 32 to rotate, causing the rotating frame 33 to rotate and change the position of the ball bearing 45. At the same time, the fourth drive motor 36 drives the second screw 35 to rotate, causing the second threaded sleeve 37 to move the second slider 38 laterally within the second groove 34, allowing the fixed seat 39 to be positioned below the wire mesh plate. Simultaneously, the fifth drive motor 40 is activated, driving the vertical screw 41 to rotate, causing the threaded sleeve 42 to move up and down through the threaded action. This causes the hinge rod 44 to be forced to open the support rod 43, thereby changing the spacing of the upper ball bearings 45 to accommodate different sizes of screen plates. Then, the pneumatic push rod 23 is activated, which drives the connecting seat 24 to move upward, causing the connecting frame 25 to drive the lifting frame 26 to move upward. At the same time, when the tension roller 30 moves upward, it will loosen the lower conveyor belt 18, and the ball bearings 45 will follow and move upward to contact and lift the conveyor belt 18, so that the upper screen plate is lifted, and its edge will leave the surface of the conveyor belt 18.
[0064] Next, the sixth drive motor 52 starts and drives the transmission wheel 4 50 to rotate. The transmission wheel 4 50 drives another set of transmission wheels 4 50 to rotate via the transmission belt 4 51, causing the two sets of first lead screws 49 to rotate synchronously. This causes the first lead screw nut guide block 53 to slide within the first lead screw 49 through the thread action. Meanwhile, the seventh drive motor 57 can start and drive the second lead screw 55 to rotate, causing the second lead screw nut guide block 56 to slide within the crossbeam 54 and drive the electric push rod 58 to move laterally. After aligning the center position of the movable frame 61 with the center of the wire mesh plate in this way, the second rotation can be used to... Motor 63 drives the second gear 64 to rotate, which in turn drives the transmission shaft 60 to rotate via the first gear 62. The transmission shaft 60 then drives the movable frame 61 to rotate, causing the clamping wheels 79 on both sides to be parallel to the two sides of the screen plate. Then, the movable frame 61 is lowered via the electric push rod 58, positioning the clamping wheels 79 on both sides of the screen plate. Next, the eighth drive motor 67 is activated, driving the third lead screw 65 to rotate. This causes the third lead screw guide block 66 to translate within the movable frame 61, moving the two sets of clamping seats 68 closer together. After the clamping rollers 79 contact and press against both sides of the wire mesh plate, the bearing seat 76 will be forced to drive the movable rod 74 into the movable groove 73 and squeeze the pressure sensor assembly 75. At the same time, the return spring 77 will be compressed. After the pressure sensor assembly 75 receives the contact, it triggers an electrical signal, which causes the clamping to be in place. It then continuously drives the two sets of clamping seats 68 to move closer together, and at the same time starts the ninth drive motor 70. The ninth drive motor 70 will drive the two sets of support rods 72 to open through the cooperation of the connecting shaft 69 and the transmission gear 71, so that the clamping rollers 79 can move along the edge of the wire mesh plate. The screen plate rolls along the edge, and during the rolling process, it is pushed straight by the four points of contact on both sides of the four sets of first lead screws 49, thereby fixing it in place by clamping. Then, it is lifted by electric push rod 58, and the second rotary motor 63 drives it to rotate and align it with the two sets of conveyor frames 1. Next, the sixth drive motor 52 and the seventh drive motor 57 move the screen plate above the two sets of single-sided conveyor belts 3. Finally, the electric push rod 58 lowers it onto the single-sided conveyor belt 3, and the clamping wheel 79 is released by driving the eighth drive motor 67 to complete the feeding and conveying.
[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
[0066] In the description of this application, it should be understood that the terms "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0067] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A CCD vision amplitude modulation positioning conveyor mechanism, characterized in that The system includes a conveyor frame (1), a transfer frame (16), and a top frame (48). Two sets of conveyor frames (1) are provided, each with an adjustable feeding mechanism. A transfer frame (16) is located in front of the conveyor frame (1), and a transfer mechanism is installed inside the transfer frame (16). A lifting frame (26) is installed on the lower side of the transfer frame (16) via a lifting mechanism. A tension roller (30) is installed on the lower side of the lifting frame (26) via a tensioning assembly. A horizontally rotatable rotating frame (33) is located at the upper end of the lifting frame (26), and a fixed seat (39) is installed on the rotating frame (33) via a translation mechanism. An expansion mechanism is used to provide a support for… The ball bearing (45) that lifts the screen plate is provided on the upper side of the conveyor frame (16), which is equipped with a CCD visual recognition device (46) and a supplementary light assembly (47) for visual recognition. A top frame (48) is provided above the conveyor frame (16). A cross frame (54) is installed on the lower side of the top frame (48) through an X-axis moving mechanism. An electric push rod (58) is installed on the lower end of the cross frame (54) through a Z-axis moving mechanism. A movable frame (61) is installed on the lower end of the electric push rod (58) through a rotation moving mechanism. Two sets of clamps (68) are installed on the lower side of the movable frame (61) through a spacing adjustment mechanism. A limiting clamping mechanism for calibrating and aligning the screen plate is provided on the opposite side of the two sets of clamps (68).
2. The CCD vision amplitude modulation positioning conveyor mechanism according to claim 1, wherein The feeding mechanism includes symmetrically rotating single-sided conveyor wheels (2) mounted between the conveyor frames (1), and single-sided conveyor belts (3) are installed on the front and rear sets of single-sided conveyor wheels (2). A conveyor wheel shaft (4) is fixedly connected to the end of each single-sided conveyor wheel (2), and a transmission wheel (5) is fixedly mounted on the conveyor wheel shaft (4). A transmission belt (6) is installed on the front and rear sets of transmission wheels (5). A first drive motor (7) is fixedly mounted on the conveyor frame (1), and the output end of the first drive motor (7) is fixedly connected to the outer end of the conveyor wheel shaft (4). Two sets of base frames (8) are symmetrically arranged on the lower side of the two sets of conveyor frames (1), and a first sliding groove (9) is opened on the upper side of the base frame (8). A first screw (1) is rotatably installed in the first sliding groove (9). 0), the end of the first screw (10) is fixedly connected to the transmission wheel (11), and the two sets of transmission wheels (11) are equipped with transmission belts (12). The end of the base frame (8) is fixedly installed with the second drive motor (13), and the output end of the second drive motor (13) is connected to the outer end of the first screw (10). The first screw (10) is threaded with the first screw sleeve (14). The first slide (9) is slidably arranged with the first slider (15), and the first slider (15) is fixedly installed on the first screw sleeve (14). The upper ends of the two sets of first sliders (15) are fixedly connected to the lower ends of the two sets of conveyor frames (1), and the lower ends of the other set of conveyor frames (1) are fixedly connected to the upper ends of the two sets of base frames (8).
3. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The conveying mechanism includes positioning conveying rollers (17) symmetrically rotated between two sets of conveying frames (16), and conveyor belts (18) are installed on the two sets of positioning conveying rollers (17). A transmission wheel (19) is fixedly installed on the outer end of the positioning conveying roller (17), and a transmission belt (20) is installed on the two sets of transmission wheels (19). A third drive motor (21) is fixedly installed on the outer side of the conveying frame (16), and the output end of the third drive motor (21) is fixedly connected to the end of one set of positioning conveying rollers (17). The lifting mechanism includes a stand (22) fixedly installed at the lower end of the two sets of conveyor frames (16), and a pneumatic push rod (23) is fixedly installed on the outer wall of the stand (22). The piston rod end of the pneumatic push rod (23) is fixedly connected to a connecting seat (24). Connecting frames (25) are symmetrically slidably arranged on the two sets of stand (22), and the opposite ends of the two sets of connecting frames (25) are fixedly connected to the two ends of the lifting frame (26), and the ends of the two sets of connecting frames (25) that are far apart from each other are fixedly connected to the two sets of connecting seats (24).
4. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 3, characterized in that... The tensioning assembly includes positioning rods (27) symmetrically and movably inserted on both sides of the lower end of the lifting frame (26), and a positioning frame (28) is fixedly connected to the lower end of the positioning rod (27). A tension spring (29) is vertically arranged between the positioning frame (28) and the lifting frame (26), and the tension spring (29) is movably sleeved on the positioning rod (27). The two sets of positioning frames (28) are symmetrically rotated and installed at both ends of the tension roller (30), and the tension roller (30) is located inside the lower end of the conveyor belt (18).
5. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The upper inner side of the lifting frame (26) is fixedly installed with a first rotary motor (31), the upper side of the lifting frame (26) is rotatably installed with a positioning shaft (32), and the lower end of the positioning shaft (32) is fixedly connected to the output end of the first rotary motor (31). The upper end of the positioning shaft (32) is fixedly connected to one side of the lower end of the rotating frame (33). The translation mechanism includes a second slide groove (34) that is laterally opened in the rotating frame (33). A second screw (35) is rotatably installed inside the second slide groove (34). A fourth drive motor (36) is fixedly installed at the outer end of the rotating frame (33), and the output end of the fourth drive motor (36) is fixedly connected to one end of the second screw (35). A second slider (38) is slidably connected in the second slide groove (34), and the second slider (38) is threaded onto the second screw (35). The second slider (38) is fixedly connected to the fixed seat (39).
6. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The expansion mechanism includes a fifth drive motor (40) fixedly installed at the lower end of the fixed base (39), and the output end of the fifth drive motor (40) is fixedly connected to a vertical screw (41). The vertical screw (41) is vertically rotatably installed at the upper end of the fixed base (39). A threaded sleeve block (42) is threadedly connected to the vertical screw (41). A support rod (43) is hinged to the outer side of the fixed base (39) in an annular array, and a hinge rod (44) is hinged to the inner side of the support rod (43). The lower end of the hinge rod (44) is hinged to the threaded sleeve block (42), and a ball bearing (45) is movably installed at the upper end of the support rod (43).
7. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The X-axis moving mechanism includes first lead screws (49) symmetrically rotated and installed on both sides of the lower end of the top frame (48). The outer ends of the two sets of first lead screws (49) are fixedly installed with transmission wheels (50), and transmission belts (51) are installed on the two sets of transmission wheels (50). A sixth drive motor (52) is fixedly installed on the outer side of the top frame (48), and the output end of the sixth drive motor (52) is connected to the outer end of one set of first lead screws (49). The two sets of first lead screws (49) are threaded with first lead screw guide blocks (53), and the first lead screw guide blocks (53) slide in the top frame (48). The lower ends of the two sets of first lead screw guide blocks (53) are fixedly connected to the upper ends of the cross frame (54).
8. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The Z-axis moving mechanism includes a second lead screw (55) rotatably mounted inside the lower side of the cross frame (54), and a second lead screw guide block (56) is threaded onto the second lead screw (55). The second lead screw guide block (56) slides inside the cross frame (54). The lower end of the second lead screw guide block (56) is fixedly connected to the upper end of the electric push rod (58). A seventh drive motor (57) is fixedly connected to the outer wall of the cross frame (54), and the output end of the seventh drive motor (57) is fixedly connected to the outer end of the second lead screw (55).
9. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The rotary movement mechanism includes a connecting block (59) fixedly installed at the movable end of the electric push rod (58), and a transmission shaft (60) is rotatably installed at the lower end of the connecting block (59). The lower end of the transmission shaft (60) is fixedly connected to the upper end of the movable frame (61). A first gear (62) is fixedly installed on the transmission shaft (60), and a second rotary motor (63) is fixedly installed at the upper end of the connecting block (59). A second gear (64) that meshes with the first gear (62) is fixedly installed on the output shaft of the second rotary motor (63).
10. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The spacing adjustment mechanism includes a third lead screw (65) rotatably mounted on the lower end of the movable frame (61). Two sets of third lead screw guide blocks (66) are symmetrically mounted on the third lead screw (65) via opposing threads, and the two sets of third lead screw guide blocks (66) slide within the movable frame (61). Two sets of clamps (68) are symmetrically fixedly connected to the lower ends of the two sets of third lead screw guide blocks (66). An eighth drive motor (67) is fixedly mounted on the outer end of the movable frame (61), and the output end of the eighth drive motor (67) is fixedly connected to one end of the third lead screw (65).
11. The CCD vision amplitude modulation positioning and conveying mechanism according to claim 1, characterized in that... The limiting clamping mechanism includes connecting shafts (69) symmetrically rotatably mounted on the end of the clamp (68). The lower end of the connecting shafts (69) is connected to the output end of the ninth drive motor (70). Transmission gears (71) are mounted on the lower ends of both sets of connecting shafts (69), and the two sets of transmission gears (71) mesh with each other. A support rod (72) is fixedly sleeved on each set of connecting shafts (69). A movable groove (73) is provided at the end of each support rod (72), and the movable groove (73)... A movable rod (74) is movably inserted at the opening. A pressure sensor assembly (75) is installed on the bottom wall of the movable groove (73). A bearing seat (76) is fixedly connected to the outer end of the movable rod (74). A return spring (77) is provided between the bearing seat (76) and the support rod (72). The return spring (77) is movably sleeved on the rod part of the movable rod (74). A positioning pin (78) is rotatably installed on the bearing seat (76). A clamping wheel (79) is fixedly connected to the lower end of the positioning pin (78).