Developing roller end coating equipment and coating method

Abstract

The invention relates to developing roller end coating equipment and a coating method.The developing roller end coating equipment comprises a workbench, the workbench is provided with a conveying line, a jacking mechanism, a clamping and rotating mechanism and a coating mechanism, the conveying line is used for conveying a tray carrying a plurality of developing rollers, and the clamping and rotating mechanism comprises a driving rotating mechanism and a driven rotating mechanism; the driving rotating mechanism and the driven rotating mechanism are located on the two sides of the conveying line correspondingly, the driving rotating mechanism comprises a first horizontal driving mechanism and a driving rotating assembly, the driving end of the first horizontal driving mechanism is connected with the driving rotating assembly, and the driving rotating assembly is in sliding fit with the workbench; the driven rotating mechanism comprises a second horizontal driving mechanism and a driven rotating assembly, the driving end of the second horizontal driving mechanism is connected with the driven rotating assembly, and the driven rotating assembly is in sliding fit with the workbench. According to the developing roller end coating equipment, automatic coating of wear-resistant paint at the two ends of the developing roller is achieved, and the production efficiency, the coating precision and the universality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated coating, and particularly to an end coating device and a coating method for a developing roller. Background Art

[0002] During the manufacturing process of a printer developing roller, it is usually necessary to coat a layer of wear-resistant paint with a width of about 6 mm at both ends of the developing roller to enhance its service life and printing stability. The existing semi-automatic coating equipment has problems such as strong dependence on manual labor, low efficiency, unstable coating accuracy, limited production capacity, and inability to adapt to different specifications of developing rollers. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an end coating device for a developing roller, which not only realizes the automated coating of wear-resistant paint at both ends of the developing roller, but also improves production efficiency, coating accuracy, and versatility.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an end coating device for a developing roller, including a workbench, on which a conveying line for conveying a tray carrying a plurality of developing rollers, a lifting mechanism for lifting the tray, a clamping and rotating mechanism for clamping and rotating the developing rollers on the tray, and a coating mechanism for coating both ends of the developing rollers on the tray are provided.

[0005] The clamping and rotating mechanism includes a driving rotating mechanism and a driven rotating mechanism. The driving rotating mechanism and the driven rotating mechanism are respectively located on both sides of the conveying line. The driving rotating mechanism includes a first horizontal driving mechanism and a driving rotating assembly. The first horizontal driving mechanism is installed on the workbench, the driving end of the first horizontal driving mechanism is connected to the driving rotating assembly, and the driving rotating assembly is slidably matched with the workbench. The first horizontal driving mechanism is used to drive the driving rotating assembly to clamp one end of a plurality of developing rollers on the tray.

[0006] The driven rotating mechanism includes a second horizontal driving mechanism and a driven rotating assembly. The second horizontal driving mechanism is installed on the workbench, the driving end of the second horizontal driving mechanism is connected to the driven rotating assembly, and the driven rotating assembly is slidably matched with the workbench. The second horizontal driving mechanism is used to drive the driven rotating assembly to clamp the other end of a plurality of developing rollers on the tray.

[0007] In one embodiment, the active rotation assembly of the developing roller end coating device includes a sliding seat, a rotation driving mechanism, and a first mounting seat. The first mounting seat is installed on the sliding seat. A plurality of first rotating shafts are sequentially arranged at intervals on the first mounting seat. The driving end of the rotation driving mechanism is connected to one of the first rotating shafts. One end of the first rotating shaft is provided with a first chuck for fixedly cooperating with one end of the developing roller. The first chuck and the first rotating shaft are of an integral structure. The two ends of the first rotating shaft are rotatably connected to the first mounting seat through first bearings. A first gear and two first sleeves are arranged on the first rotating shaft. The first gear is sleeved and fixed on the first rotating shaft. The first gear is located between the two first bearings and meshes with adjacent first gears. The two first sleeves are sleeved on the first rotating shaft and located between the first gear and the first bearings.

[0008] In one embodiment, the driven rotation assembly of the developing roller end coating device includes a second mounting seat. A plurality of second rotating shafts are sequentially arranged at intervals on the second mounting seat. One end of the second rotating shaft is provided with a second chuck for fixedly cooperating with the other end of the developing roller. The second chuck and the second rotating shaft are of an integral structure. The two ends of the second rotating shaft are rotatably connected to the second mounting seat through second bearings. A disc spring and a second sleeve are arranged on the second rotating shaft. The disc spring is sleeved on the second rotating shaft and located between the chuck and the second bearing. The second sleeve is sleeved on the second rotating shaft and located between the two second bearings.

[0009] In one embodiment, the coating mechanism of the developing roller end coating device includes a support frame, a linear module moving along the X-axis direction, a first connecting frame, a first fixing plate, a bidirectional driving mechanism moving along the Y-axis direction, two coating assemblies, a second fixing plate, and a lifting driving mechanism moving along the Z-axis direction. The linear module is installed on the support frame, the driving end of the linear module is connected to one end of the first connecting frame, the other end of the first connecting frame is slidably matched with the support frame, the first fixing plate is installed at the bottom end of the first connecting frame, the two symmetric coating assemblies are symmetrically installed on the first fixing plate and are slidably matched with the first fixing plate along the Y-axis direction, the tops of the two symmetric coating assemblies are slidably matched with the second fixing plate along the Y-axis direction, the bidirectional driving mechanism is installed at one end of the first fixing plate, and the two driving ends of the bidirectional driving mechanism are respectively connected to the two coating assemblies. The driving end of the lifting driving mechanism is connected to the second fixing plate through a transmission component. The coating assembly includes an L-shaped moving seat, an L-shaped connecting plate, and a plurality of paint coating mechanisms arranged at intervals in sequence. The bottom of the L-shaped moving seat is slidably matched with the first fixing plate along the Y-axis direction, the side end of the L-shaped connecting plate is slidably matched with the side end of the L-shaped moving seat along the Z-axis direction, the top end of the L-shaped connecting plate is slidably matched with the second fixing plate along the Y-axis direction. The L-shaped connecting plate and the plurality of paint coating mechanisms are adjustably connected through an adjusting plate. The lifting driving mechanism is used to drive the second fixing plate to drive the L-shaped connecting plate and the plurality of paint coating mechanisms to perform lifting movements. The adjusting plate is provided with waist-shaped holes for adjusting the height of the paint coating mechanism.

[0010] In one embodiment, the paint coating mechanism of the developing roller end coating device includes a screw valve and a paint nozzle. The screw valve is connected to the paint nozzle. A first groove is horizontally arranged in the paint outlet of the paint nozzle, and the paint outlet of the paint nozzle is set as a plane.

[0011] In one embodiment, the bidirectional driving mechanism of the developing roller end coating device includes a first motor, a bidirectional T-shaped lead screw, and two first nut seats. The driving end of the first motor is connected to the bidirectional T-shaped lead screw. The two first nut seats are respectively rotationally matched with the two ends of the bidirectional T-shaped lead screw through threads. One end of each of the two first nut seats is respectively connected to the two coating assemblies one by one. The first motor drives the bidirectional T-shaped lead screw to drive the two first nut seats to move towards each other, and the first nut seats drive the two coating assemblies to move towards each other.

[0012] In one embodiment, first springs are arranged at the tops of the two first nut seats of the developing roller end coating device. The two ends of each first spring are respectively connected to the two first nut seats.

[0013] In one embodiment, the lifting mechanism of the developing roller end coating device includes a fixed frame, a second motor, a lifting plate, a guiding component, and two clamping components for clamping the tray. The fixed frame is installed on the workbench and is located below the conveying line. The second motor is installed on the fixed frame, and the driving end of the second motor passes through the fixed frame and is connected to the lifting plate. The lifting plate is slidably connected to the fixed frame through the guiding component. The two clamping components are symmetrically installed on the lifting plate and move relatively. The clamping component includes a first cylinder, a clamping jaw, and a profiling block adapted to the bottom of the tray. The driving end of the first cylinder is connected to the clamping jaw, and the profiling block is installed at one end of the lifting plate. The first cylinder is used to drive the clamping jaw to move towards the profiling block to clamp the bottom of the tray. The tray includes two bearing frames, two second connecting frames, and two V-shaped reinforcing frames. The two second connecting frames connect the two bearing frames, and the two V-shaped reinforcing frames respectively connect the middle parts of the two bearing frames. The bottom of the V-shaped reinforcing frame is adapted to the top of the profiling block. A plurality of second grooves for placing the ends of the developing rollers are sequentially and spacedly arranged on the bearing frame.

[0014] In one embodiment, a material collecting component for collecting the residual wear-resistant paint of the coating mechanism and two stoppers for stopping the tray are arranged on the workbench of the developing roller end coating device. The material collecting component is located on one side of the clamping and rotating mechanism. The material collecting component includes a material collecting tray, and the bottom of the material collecting tray is connected to the workbench through four first connecting plates arranged vertically. The stopper is installed on the frame of the conveying line and is located on one side of the lifting mechanism.

[0015] A method for coating the end of a developing roller, referring to the developing roller end coating device, the coating steps are as follows:

[0016] First step: The conveying line conveys the tray full of developing rollers to the upper part of the lifting mechanism, and the two stoppers stop the tray.

[0017] Second step: The lifting mechanism drives the tray to drive multiple developing rollers to move upward to a specified position, so that the multiple developing rollers are located between the clamping and rotating mechanisms.

[0018] Third step: The first horizontal driving mechanism of the clamping and rotating mechanism drives the active rotating component to move towards the multiple developing rollers, clamps the multiple developing rollers on the driven rotating mechanism, the second horizontal driving mechanism of the driven rotating mechanism drives the driven rotating component to clamp the multiple developing rollers again, the active rotating component drives the multiple developing rollers to rotate simultaneously, and the lifting mechanism drives the tray to move downward to return to the initial position.

[0019] Step 4: The linear module of the coating mechanism drives the two coating components to move along the X-axis direction above the multiple developing rollers. The lifting drive mechanism drives the two coating components to move downward to the specified position. Then, the bidirectional drive mechanism drives the two coating components to move in opposite directions to the coating positions at both ends of the developing rollers, and the two coating components respectively perform painting operations on both ends of the multiple developing rollers;

[0020] Step 5: After coating is completed, the coating mechanism moves above the material receiving component. The material receiving component collects the residual wear-resistant paint of the coating mechanism. At the same time, the active rotation mechanism drives the multiple developing rollers to stop rotating, and the lifting mechanism drives the tray to move upward to carry the multiple developing rollers that have completed the end coating. The lifting mechanism drives the tray to drive the multiple developing rollers to move downward so that the tray is located on the conveyor line. The two stoppers are opened to stop, and the conveyor line transports the tray to the next workstation.

[0021] The beneficial effects of this application are as follows:

[0022] This application provides a developing roller end coating device. Through the cooperation of the conveyor line, lifting mechanism, clamping rotation mechanism, and coating mechanism, the transmission, lifting, clamping rotation of multiple developing rollers, and the coating operation of wear-resistant paint on both ends of multiple developing rollers are realized. This developing roller end coating device not only realizes the automatic coating of wear-resistant paint on both ends of the developing roller, but also improves the production efficiency and coating accuracy, and can be applicable to developing rollers of different specifications.

[0023] The active rotation mechanism and driven rotation mechanism of this developing roller end coating device adopt a high-precision multi-axis structure, which realizes the stability and consistency of the rotation of multiple developing rollers, avoids error gaps, and improves the service life.

[0024] The coating mechanism of this developing roller end coating device adopts a multi-axis linkage design, which is convenient for driving multiple painting mechanisms to move in various directions and perform wear-resistant paint coating operations on both ends of multiple developing rollers, improving the production efficiency and coating accuracy of the device.

[0025] The lifting mechanism of this developing roller end coating device realizes the clamping and lifting of the tray by symmetrically arranging two clamping components, improving the stability of the lifting movement of the tray. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the developing roller end coating device of the embodiment of this application;

[0027] Figure 2 It is a schematic diagram of the clamping rotation mechanism of the developing roller end coating device of the embodiment of this application;

[0028] Figure 3Schematic diagram of one perspective of the coating mechanism of the developing roller end coating device according to an embodiment of the present application;

[0029] Figure 4 Schematic diagram of another perspective of the developing roller end coating device according to an embodiment of the present application;

[0030] Figure 5 Schematic diagram of one perspective of the lifting mechanism of the developing roller end coating device according to an embodiment of the present application;

[0031] Figure 6 Schematic diagram of another perspective of the lifting mechanism of the developing roller end coating device according to an embodiment of the present application;

[0032] Figure 7 Schematic diagram of the paint nozzle of the developing roller end coating device according to an embodiment of the present application;

[0033] Wherein:

[0034] 1. Workbench; 2. Conveyor line; 3. Lifting mechanism; 4. Clamping and rotating mechanism; 5. Coating mechanism; 6. Tray; 7. Material collecting assembly; 8. Stopper; 9. Developing roller; 31. Fixed frame; 32. Second motor; 33. Lifting plate; 34. Guide assembly; 35. Clamping assembly; 351. First cylinder; 352. Jaw; 353. Profiled block; 41. Active rotating mechanism; 42. Driven rotating mechanism; 411. First horizontal driving mechanism; 412. Active rotating assembly; 421. Second horizontal driving mechanism; 422. Driven rotating assembly; 100. Sliding seat; 101. Rotating driving mechanism; 102. First mounting seat; 103. First rotating shaft; 104. First chuck; 105. First bearing; 106. First gear; 107. First sleeve; 108. Second mounting seat; 109. Second rotating shaft; 110. Second chuck; 111. Second bearing; 112. Belleville spring; 113. Second sleeve; 51. Support frame; 52. Linear module; 53. First connecting frame; 54. First fixing plate; 55. Bidirectional driving mechanism; 56. Coating assembly; 57. Second fixing plate; 58. Lifting driving mechanism; 561. L-shaped moving seat; 562. L-shaped connecting plate; 563. Paint coating mechanism; 564. Adjusting plate; 114. Screw valve; 115. Paint nozzle; 001. Slotted hole; 002. First groove; 551. First motor; 552. Bidirectional T-shaped lead screw; 553. First nut seat; 554. First spring; 61. Carrying frame; 62. Second connecting frame; 63. V-shaped reinforcing frame; 611. Second groove; 71. Material collecting tray; 72. First connecting plate. Detailed implementation manners

[0035] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings.

[0036] As Figure 1 shown, an embodiment of the present application provides a developing roller end coating device, including a workbench 1, on which a conveying line 2 for conveying a tray 6 carrying a plurality of developing rollers 9, a lifting mechanism 3 for lifting the tray 6, a clamping and rotating mechanism 4 for clamping and rotating the developing rollers 9 on the tray 6, and a coating mechanism 5 for coating both ends of the developing rollers 9 on the tray 6 are provided.

[0037] As Figure 2 shown, the clamping and rotating mechanism 4 includes a driving rotating mechanism 41 and a driven rotating mechanism 42. The driving rotating mechanism 41 and the driven rotating mechanism 42 are respectively located on both sides of the conveying line 2. The driving rotating mechanism 41 includes a first horizontal driving mechanism 411 and a driving rotating assembly 412. The first horizontal driving mechanism 411 is installed on the workbench 1 and is located on one side of the conveying line 2. The driving end of the first horizontal driving mechanism 411 is connected to the driving rotating assembly 412. The driving rotating assembly 412 is slidably engaged with the workbench 1. The first horizontal driving mechanism 411 is used to drive the driving rotating assembly 412 to clamp one end of the plurality of developing rollers 9 on the tray 6.

[0038] As Figure 2 shown, the driven rotating mechanism 42 includes a second horizontal driving mechanism 421 and a driven rotating assembly 422. The second horizontal driving mechanism 421 is installed on the workbench 1 and is located on the other side of the conveying line 2. The driving end of the second horizontal driving mechanism 421 is connected to the driven rotating assembly 422. The driven rotating assembly 422 is slidably engaged with the workbench 1. The second horizontal driving mechanism 421 is used to drive the driven rotating assembly 422 to clamp the other end of the plurality of developing rollers 9 on the tray 6.

[0039] Specifically, 20 developing rollers 9 can be placed on the tray 6. The conveyor line 2 conveys the tray 6 full of developing rollers 9. When the tray 6 moves above the lifting mechanism 3, two stoppers 8 stop the tray 6. The lifting mechanism 3 drives the tray 6 to drive the 20 developing rollers 9 to move upward between the clamping and rotating mechanism 4. The first horizontal driving mechanism 411 drives the active rotating assembly 412 to move towards the 20 developing rollers 9 and clamp the developing rollers 9 on the driven rotating assembly 422. The second horizontal driving mechanism 421 drives the driven rotating assembly 422 to move towards the 20 developing rollers 9 for further clamping. After clamping in place, the active rotating assembly 412 drives the 20 developing rollers 9 to rotate synchronously. The coating mechanism 5 moves above the 20 developing rollers 9, and the two ends of 4 developing rollers 9 can be coated with wear-resistant paint at a time according to the coating sequence. Among them, the first horizontal driving mechanism 411 includes a first fixed seat and a third motor. The third motor is installed on the first fixed seat, and the driving end of the third motor is connected to the sliding seat 100 of the active rotating assembly 412. The sliding seat 100 is slidably matched with the first fixed seat in the Y-axis direction. The third motor drives the active rotating assembly 412 to move horizontally in the Y-axis direction. The second horizontal driving mechanism 421 includes a second fixed seat and a second cylinder. The second cylinder is installed on the second fixed seat, and the driving end of the second cylinder is connected to the second mounting seat 108 of the driven rotating assembly 422. The second cylinder drives the driven rotating assembly 422 to move horizontally in the Y-axis direction. The driving directions of the second cylinder and the third motor are opposite.

[0040] In the above structure, by setting the conveyor line 2, the lifting mechanism 3, the clamping and rotating mechanism 4 and the coating mechanism 5 to cooperate with each other, the operations of transporting, lifting, clamping and rotating the 20 developing rollers 9 and coating the wear-resistant paint on both ends of the 20 developing rollers 9 are realized. The active rotating mechanism 41 and the driven rotating mechanism 42 are used to clamp both ends of the 20 developing rollers 9 at the same time to ensure the synchronous rotation of the 20 developing rollers 9, and cooperate with the coating mechanism 5 to realize the coating of the wear-resistant paint on both ends of multiple developing rollers 9 at a time. This developing roller end coating equipment not only realizes the automatic coating of the wear-resistant paint on both ends of the developing roller 9, but also improves the production efficiency and coating accuracy, and can be applied to developing rollers 9 of different specifications.

[0041] Such as Figure 2As shown, in one embodiment, the active rotation assembly 412 of the developing roller end coating device includes a sliding seat 100, a rotation driving mechanism 101, and a first mounting seat 102. The first mounting seat 102 is mounted on the sliding seat 100. A number of first rotating shafts 103 are sequentially and spacedly arranged on the first mounting seat 102. The driving end of the rotation driving mechanism 101 is connected to one of the first rotating shafts 103. One end of the first rotating shaft 103 is provided with a first chuck 104 for fixedly mating with one end of the developing roller 9. The first chuck 104 and the first rotating shaft 103 are of an integral structure. The two ends of the first rotating shaft 103 and the first mounting seat 102 are rotationally connected through a first bearing 105. A first gear 106 and two first sleeves 107 are arranged on the first rotating shaft 103. The first gear 106 is sleeved and fixed on the first rotating shaft 103. The first gear 106 is located between the two first bearings 105 and adjacent first gears 106 are meshed with each other. The two first sleeves 107 are sleeved on the first rotating shaft 103 and are located between the first gear 106 and the first bearing 105. The first mounting seat 102 includes a cover plate and two mounting plates. The cover plate covers the two mounting plates. 20 first rotating shafts 103 are sequentially and spacedly arranged on the first mounting seat 102. The two ends of the first rotating shaft 103 and the two mounting plates are rotationally connected through a first bearing 105. The first gear 106 is sleeved and fixed on the first rotating shaft 103. The first gear 106 is located between the two mounting plates, and the first gears 106 of adjacent two first rotating shafts 103 are meshed with each other. The two first sleeves 107 are respectively located between the gear and the two bearings to position-constrain the gear and the two first bearings 105. The first chuck 104 is mounted on the end of the first rotating shaft 103 far from the rotation driving mechanism 101. The driving end of the rotation driving mechanism 101 is connected to the fifth first rotating shaft 103 of the mounting seat. The rotation driving mechanism 101 is a fourth motor. The first horizontal driving mechanism 411 drives the sliding seat 100 to drive the rotation driving mechanism 101 and the first mounting seat 102 to move towards 20 developing rollers 9, so that the first chucks 104 of the 20 first rotating shafts 103 approach the 20 developing rollers 9 and fixedly mate with the ends of the 20 developing rollers 9, clamping the 20 developing rollers 9 on the 20 second chucks 110 of the driven rotation assembly 422. Then, the second horizontal driving mechanism 421 drives the 20 second chucks 110 of the driven rotation assembly 422 to clamp the 20 developing rollers 9 again, ensuring that the 20 developing rollers 9 are clamped between the active rotation assembly 412 and the driven rotation assembly 422. Then, the rotation driving mechanism 101 drives the fifth first rotating shaft 103 to rotate. The rotation of the fifth first rotating shaft 103 drives the first gear 106 to rotate. The first gear 106 drives the adjacent first gears 106 to rotate, thereby driving the 20 first rotating shafts 103 and the 20 developing rollers 9 to rotate synchronously.The first chuck 104 and the first rotating shaft 103 are integrally designed, which greatly reduces the error accumulation caused by assembly and long-term use and improves the concentricity. The first rotating shaft 103 and the mounting seat are transitionally fitted with two first bearings 105, which not only avoids the increase of the gap between components, but also greatly improves the rotation stability of the first rotating shaft 103, thus ensuring the rotation stability and consistency of multiple developing rollers 9.

[0042] As Figure 2 shown, in one embodiment, the driven rotating assembly 422 of the developing roller end coating device includes a second mounting seat 108. A plurality of second rotating shafts 109 are sequentially and spacedly arranged on the second mounting seat 108. One end of the second rotating shaft 109 is provided with a second chuck 110 for fixedly fitting with the other end of the developing roller 9. The second chuck 110 and the second rotating shaft 109 are of an integral structure. The two ends of the second rotating shaft 109 and the second mounting seat 108 are rotatably connected through second bearings 111. A disc spring 112 and a second sleeve 113 are arranged on the second rotating shaft 109. The disc spring 112 is sleeved on the second rotating shaft 109 and is located between the chuck and the second bearing 111. The second sleeve 113 is sleeved on the second rotating shaft 109 and is located between the two second bearings 111. 20 second rotating shafts 109 are sequentially and spacedly arranged on the second mounting seat 108. The second chuck 110 is located at one end of the second rotating shaft 109 close to the developing roller 9. The two ends of the second rotating shaft 109 and the mounting seat are rotatably connected through second bearings 111. The second sleeve 113 is sleeved on the second rotating shaft 109 and is located between the two second bearings 111 to restrict the rotation of the two second bearings 111. The disc spring 112 is sleeved on the second rotating shaft 109. One end of the disc spring 112 abuts against the second chuck 110, and the other end of the disc spring 112 abuts against the second bearing 111 close to the developing roller 9. When the driving rotating assembly 412 clamps 20 developing rollers 9 on the second chucks 110 of 20 second rotating shafts 109, the second horizontal driving mechanism 421 drives the driven rotating assembly 422 to clamp the 20 developing rollers 9 again, so that the second chuck 110 compresses the disc spring 112 under force, which can avoid the inconsistent rotation caused by the length difference of the developing rollers 9. The second chuck 110 and the second rotating shaft 109 are integrally designed, which reduces the error accumulation caused by assembly and long-term use and improves the concentricity. The second rotating shaft 109 and the mounting seat are in clearance fit between the disc spring 112 and the two second bearings 111, which not only reduces the component fit, but also reduces the clamping error and improves the rotation stability and consistency of multiple developing rollers 9.

[0043] As Figure 3 and Figure 4As shown, in one of the embodiments, the coating mechanism 5 of the developing roller end coating device includes a support frame 51, a linear module 52 that moves along the X-axis direction, a first connecting frame 53, a first fixing plate 54, a bidirectional driving mechanism 55 that moves along the Y-axis direction, two coating assemblies 56, a second fixing plate 57, and a lifting driving mechanism 58 that moves along the Z-axis direction. The linear module 52 is installed on the support frame 51. The driving end of the linear module 52 is connected to one end of the first connecting frame 53. The other end of the first connecting frame 53 is slidably engaged with the support frame 51. The first fixing plate 54 is installed at the bottom end of the first connecting frame 53. Two symmetric coating assemblies 56 are symmetrically installed on the first fixing plate 54 and are slidably engaged with the first fixing plate 54 along the Y-axis direction. The tops of the two symmetric coating assemblies 56 are slidably engaged with the second fixing plate 57 along the Y-axis direction. The bidirectional driving mechanism 55 is installed at one end of the first fixing plate 54. The two driving ends of the bidirectional driving mechanism 55 are respectively connected to the two coating assemblies 56. The driving end of the lifting driving mechanism 58 is connected to the second fixing plate 57 through a transmission component. The coating assembly 56 includes an L-shaped moving seat 561, an L-shaped connecting plate 562, and a plurality of paint coating mechanisms 563 arranged at intervals in sequence. The bottom of the L-shaped moving seat 561 is slidably engaged with the first fixing plate 54 along the Y-axis direction. The side end of the L-shaped connecting plate 562 is slidably engaged with the side end of the L-shaped moving seat 561 along the Z-axis direction. The top end of the L-shaped connecting plate 562 is slidably engaged with the second fixing plate 57 along the Y-axis direction. The L-shaped connecting plate 562 and the plurality of paint coating mechanisms 563 are adjustably connected through an adjusting plate 564. The lifting driving mechanism 58 is used to drive the second fixing plate 57 to drive the L-shaped connecting plate 562 and the plurality of paint coating mechanisms 563 to perform lifting movements. The adjusting plate 564 is provided with a waist-shaped hole 001 for adjusting the height of the paint coating mechanism 563. The lifting driving mechanism 58 is a fifth motor. The transmission component includes a first lead screw, a second nut seat, and a bearing seat. The fifth motor is installed on the second fixing plate 57. The driving end of the fifth motor is connected to one end of the first lead screw. The other end of the first lead screw is rotatably engaged with the bearing seat. The bearing seat is installed on the first fixing plate 54. The first lead screw is threadedly rotatably connected to the second nut seat. The outer wall of the second nut seat is connected to the second fixing plate 57. The fifth motor drives the first lead screw to rotate, and the second nut seat drives the second fixing plate 57 to move up and down along the lead screw. There are 4 paint coating mechanisms 563 arranged at intervals on the L-shaped connecting plates 562 of the two coating assemblies 56 symmetrically arranged on the first fixing plate 54.When the clamping and rotating mechanism 4 clamps 20 developing rollers 9, the linear module 52 drives the first connecting frame 53 to drive two symmetrically arranged coating assemblies 56 to move horizontally above the 20 developing rollers 9. The lifting drive mechanism 58 drives the second fixing plate 57 to drive the two L-shaped connecting plates 562 of the two coating assemblies 56 to drive the 4 painting mechanisms 563 to move downward along the L-shaped moving seat 561 to the coating height of the developing roller 9. Then, the bidirectional drive mechanism 55 drives the two coating assemblies 56 to move horizontally in opposite directions along the first fixing plate 54 and the second fixing plate 57, so that the four painting mechanisms 563 of the two coating assemblies 56 are respectively located at both ends of the four developing rollers 9. The clamping and rotating mechanism 4 drives the 20 developing rollers 9 to rotate synchronously. The two coating assemblies 56 coat the abrasion-resistant paint on both ends of 4 developing rollers 9 at one time. When the coating of the 4 developing rollers 9 is completed, the linear module 52 and the lifting drive mechanism 58 cooperate to drive the two coating assemblies 56 to move above the other 4 developing rollers 9 to perform the coating operation on both ends of the other 4 developing rollers 9, and sequentially perform the coating operations on the remaining developing rollers 9, for a total of 5 coatings, completing the abrasion-resistant paint coating operation on both ends of the 20 developing rollers 9. Among them, according to the specification size of the developing roller 9, the installation height of the plurality of painting mechanisms 563 can be adjusted through the waist-shaped holes 001 of the adjusting plate 564. The coating mechanism 5 adopts a multi-axis linkage design, which is convenient for driving the plurality of painting mechanisms 563 to move in various directions and perform the abrasion-resistant paint coating operation on both ends of the plurality of developing rollers 9, improving the production efficiency and coating accuracy of the equipment.

[0044] As Figure 4 and Figure 7 shown, in one embodiment, the painting mechanism 563 of the developing roller end coating device includes a screw valve 114 and a paint nozzle 115. The screw valve 114 is connected to the paint nozzle 115. A first groove 002 is horizontally arranged in the paint outlet of the paint nozzle 115, and the paint outlet of the paint nozzle 115 is set as a plane. The paint nozzle 115 is made of brass material, and the screw valve 114 is a precision metering device, which can control the paint output of the paint nozzle 115 according to the painting requirements to meet the high-precision coating requirements. The first groove 002 is located above the paint outlet of the paint nozzle 115. When the abrasion-resistant paint flows from the screw valve 114 into the first groove 002, the horizontally arranged first groove 002 disperses the paint laterally, so that the abrasion-resistant paint can flow out evenly from the paint outlet. A plane paint outlet with a width of 4 mm is closely attached to the end of the developing roller 9, and uniform coating is achieved through cooperation with the clamping and rotating mechanism 4. This setting realizes high-precision and high-quality coating on both ends of the developing roller 9, meeting the coating requirements of different specifications of the developing roller 9.

[0045] As Figure 4As shown, in one embodiment, the bidirectional drive mechanism 55 of the developing roller end coating device includes a first motor 551, a bidirectional T-shaped lead screw 552, and two first nut seats 553. The drive end of the first motor 551 is connected to the bidirectional T-shaped lead screw 552. The two first nut seats 553 are respectively in rotational threaded engagement with the two ends of the bidirectional T-shaped lead screw 552. One end of each of the two first nut seats 553 is respectively connected to one of the two coating assemblies 56. The first motor 551 drives the bidirectional T-shaped lead screw 552 to drive the two first nut seats 553 to move towards each other. The first nut seats 553 drive the two coating assemblies 56 to move towards each other. The two threads of the bidirectional T-shaped lead screw 552 have opposite directions (left-handed and right-handed). When the first motor 551 drives the bidirectional T-shaped lead screw 552 to rotate, the two first nut seats 553 will simultaneously move in opposite directions or in opposite directions along the two sections of the lead screw. Thus, the two first nut seats 553 drive the two coating assemblies 56 to approach or move away from each other synchronously, realizing symmetric coating. This setting has high transmission accuracy, can ensure the movement synchronization of the two coating assemblies 56, avoid offloading or uneven coating, and thus improve the coating quality and coating efficiency of the developing roller 9.

[0046] As Figure 4 shown, in one embodiment, first springs 554 are provided on the tops of the two first nut seats 553 of the developing roller end coating device. The two ends of each first spring 554 are respectively connected to the two first nut seats 553. When the first motor 551 drives the bidirectional T-shaped lead screw 552 to drive the two first nut seats 553 to move relatively or in opposite directions, the first springs 554 provided on the two first nut seats 553 will provide buffering force and tension, which can eliminate the clearance between the two first nut seats 553 and the bidirectional T-shaped lead screw 552, ensuring accurate positioning and no shaking of the coating assembly 56.

[0047] As Figure 5 and Figure 6As shown, in one of the embodiments, the lifting mechanism 3 of the developing roller end coating device includes a fixing frame 31, a second motor 32, a lifting plate 33, a guiding component 34, and two clamping components 35 for clamping the tray 6. The fixing frame 31 is installed on the workbench 1 and is located below the conveying line 2. The second motor 32 is installed on the fixing frame 31. The driving end of the second motor 32 passes through the fixing frame 31 and is connected to the lifting plate 33. The lifting plate 33 is slidably connected to the fixing frame 31 through the guiding component 34. The two clamping components 35 are symmetrically installed on the lifting plate 33 and perform relative movement. The clamping component 35 includes a first cylinder 351, a clamping jaw 352, and a profiling block 353 adapted to the bottom of the tray 6. The driving end of the first cylinder 351 is connected to the clamping jaw 352. The profiling block 353 is installed at one end of the lifting plate 33. The first cylinder 351 is used to drive the clamping jaw 352 to move towards the profiling block 353 to clamp the bottom of the tray 6. The tray 6 includes two bearing frames 61, two second connecting frames 62, and two V-shaped reinforcing frames 63. The two second connecting frames 62 connect the two bearing frames 61. The two V-shaped reinforcing frames 63 respectively connect the middle parts of the two bearing frames 61. The bottom of the V-shaped reinforcing frame 63 is adapted to the top of the profiling block 353. A number of second grooves 611 for placing the ends of the developing roller 9 are sequentially and spacedly arranged on the bearing frame 61. When the conveying line 2 drives the tray 6 to drive the developing roller 9 to move above the lifting mechanism 3, the two stoppers 8 stop the tray 6. The second motor 32 drives the lifting plate 33 to drive the two clamping components 35 to move upward. When the profiling blocks 353 of the two clamping components 35 contact the two V-shaped reinforcing frames 63 of the tray 6, the first cylinders 351 of the two clamping components 35 simultaneously drive the clamping jaws 352 to clamp the side ends of the two V-shaped reinforcing frames 63 on the top side ends of the profiling blocks 353. After clamping, the second motor 32 continues to drive the lifting plate 33 to drive the tray 6 and the developing roller 9 to move upward to a specified position. When the clamping and rotating mechanism 4 clamps the developing roller 9 on the tray 6, the second motor 32 drives the lifting plate 33 to drive the tray 6 to move downward to the conveying line 2, and the stopper 8 continues to perform a stopping operation on the tray 6. The setting of the lifting mechanism 3 facilitates clamping and lifting of the tray 6, and improves the stability of the lifting movement of the tray 6. Twenty second grooves 611 are symmetrically arranged on the two bearing frames 61 of the tray 6, and the two ends of 20 developing rollers 9 can be respectively placed in the second grooves 611 of the two bearing frames 61. The bottoms of the two V-shaped reinforcing frames 63 of the tray 6 are respectively adapted to the tops of the two profiling blocks 353, which facilitates the clamping jaw 352 to clamp the side ends of the V-shaped reinforcing frame 63 on the top side ends of the profiling block 353. The setting of the tray 6 not only improves the bearing stability of multiple developing rollers 9, but also facilitates the clamping cooperation with the clamping component 35.

[0048] As Figure 3 and Figure 5As shown, in one of the embodiments, a material collecting component 7 for collecting the residual wear-resistant paint of the coating mechanism 5 and two stoppers 8 for stopping the tray 6 are provided on the workbench 1 of the developing roller end coating device. The material collecting component 7 is located on one side of the clamping and rotating mechanism 4. The material collecting component 7 includes a material collecting tray 71. The bottom of the material collecting tray 71 is connected to the workbench 1 through four vertically arranged first connecting plates 72. The stopper 8 is installed on the frame of the conveying line 2 and is located on one side of the lifting mechanism 3. After the coating mechanism 5 finishes coating the developing roller 9, the coating mechanism 5 moves above the material collecting tray 71 of the material feeding component, and the material collecting tray 71 collects the residual wear-resistant paint of the coating mechanism 5. The setting of the material collecting component 7 facilitates the collection of the residual wear-resistant paint of the coating mechanism 5 and avoids the residual wear-resistant paint from contaminating the workbench 1 and the conveying line 2. The setting of the two stoppers 8 facilitates the accurate stopping operation of the tray 6.

[0049] As Figure 1 shown, an embodiment of the present application also provides a method for coating the end of a developing roller. Referring to the developing roller end coating device, the coating steps are as follows:

[0050] First step: The conveying line 2 conveys the tray 6 loaded with the developing roller 9 to above the lifting mechanism 3, and the two stoppers 8 stop the tray 6.

[0051] Second step: The lifting mechanism 3 drives the tray 6 to drive a plurality of developing rollers 9 to move upward to a specified position, so that a plurality of developing rollers 9 are located between the clamping and rotating mechanism 4.

[0052] Third step: The first horizontal driving mechanism 411 of the clamping and rotating mechanism 4 drives the active rotating assembly 412 to move towards a plurality of developing rollers 9, clamps a plurality of developing rollers 9 on the driven rotating mechanism 42. The second horizontal driving mechanism 421 of the driven rotating mechanism 42 drives the driven rotating assembly 422 to clamp a plurality of developing rollers 9 again. The active rotating assembly 412 drives a plurality of developing rollers 9 to rotate simultaneously, and the lifting mechanism 3 drives the tray 6 to move downward to the initial position.

[0053] Fourth step: The linear module 52 of the coating mechanism 5 drives the two coating assemblies 56 to move along the X-axis direction to above a plurality of developing rollers 9. The lifting driving mechanism 58 drives the two coating assemblies 56 to move downward to a specified position. Then, the bidirectional driving mechanism 55 drives the two coating assemblies 56 to move in opposite directions to the coating positions at both ends of the developing roller 9, and the two coating assemblies 56 respectively perform painting operations on both ends of a plurality of developing rollers 9.

[0054] Step 5: After the coating is completed, the coating mechanism 5 moves above the material receiving component 7. The material receiving component 7 collects the residual wear-resistant paint on the coating mechanism 5. At the same time, the active rotation mechanism 41 drives the plurality of developing rollers 9 to stop rotating. The lifting mechanism 3 drives the tray 6 to move upward to carry the plurality of developing rollers 9 that have completed the end coating. The lifting mechanism 3 drives the tray 6 to drive the plurality of developing rollers 9 to move downward, so that the tray 6 is located on the conveyor line 2. The two stoppers 8 are opened to stop, and the conveyor line 2 conveys the tray 6 to the next workstation.

[0055] The above coating method realizes the conveying, stopping, lifting, clamping, rotation of the plurality of developing rollers 9 and the coating operation on both ends of the plurality of developing rollers 9. This coating method not only realizes the automatic coating of wear-resistant paint on both ends of the developing roller 9, but also improves the production efficiency and coating accuracy, and can be applied to developing rollers 9 of different specifications.

[0056] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A developing roller end coating device, characterized in that, It includes a workbench (1), on which there are a conveying line (2) for conveying a tray (6) carrying a plurality of developing rollers (9), a lifting mechanism (3) for lifting the tray (6), a clamping and rotating mechanism (4) for clamping and rotating the developing rollers (9) on the tray (6), and a coating mechanism (5) for coating both ends of the developing rollers (9) on the tray (6). The clamping and rotating mechanism (4) includes a driving rotating mechanism (41) and a driven rotating mechanism (42). The driving rotating mechanism (41) and the driven rotating mechanism (42) are respectively located on both sides of the conveying line (2). The driving rotating mechanism (41) includes a first horizontal driving mechanism (411) and a driving rotating assembly (412). The first horizontal driving mechanism (411) is installed on the workbench (1), the driving end of the first horizontal driving mechanism (411) is connected to the driving rotating assembly (412), and the driving rotating assembly (412) is slidably matched with the workbench (1). The first horizontal driving mechanism (411) is used to drive the driving rotating assembly (412) to clamp one end of the plurality of developing rollers (9) on the tray (6). The driven rotating mechanism (42) includes a second horizontal driving mechanism (421) and a driven rotating assembly (422). The second horizontal driving mechanism (421) is installed on the workbench (1), the driving end of the second horizontal driving mechanism (421) is connected to the driven rotating assembly (422), and the driven rotating assembly (422) is slidably matched with the workbench (1). The second horizontal driving mechanism (421) is used to drive the driven rotating assembly (422) to clamp the other end of the plurality of developing rollers (9) on the tray (6).

2. The developing roller end coating device according to claim 1, wherein, The driving rotating assembly (412) includes a sliding seat (100), a rotating driving mechanism (101), and a first mounting seat (102). The first mounting seat (102) is installed on the sliding seat (100). A plurality of first rotating shafts (103) are sequentially arranged at intervals on the first mounting seat (102). The driving end of the rotating driving mechanism (101) is connected to one of the first rotating shafts (103). One end of the first rotating shaft (103) is provided with a first chuck (104) for fixedly mating with one end of the developing roller (9). The first chuck (104) and the first rotating shaft (103) are of an integral structure. Both ends of the first rotating shaft (103) and the first mounting seat (102) are rotationally connected through first bearings (105). A first gear (106) and two first sleeves (107) are arranged on the first rotating shaft (103). The first gear (106) is sleeved and fixed on the first rotating shaft (103). The first gear (106) is located between the two first bearings (105) and adjacent first gears (106) are meshed with each other. The two first sleeves (107) are sleeved on the first rotating shaft (103) and located between the first gear (106) and the first bearing (105).

3. The developing roller end coating device according to claim 1, characterized in that, The driven rotating assembly (422) includes a second mounting base (108). A plurality of second rotating shafts (109) are sequentially and spacedly arranged on the second mounting base (108). One end of each second rotating shaft (109) is provided with a second chuck (110) for fixedly mating with the other end of the developing roller (9). The second chuck (110) and the second rotating shaft (109) are of an integral structure. Both ends of the second rotating shaft (109) and the second mounting base (108) are rotatably connected through second bearings (111). A disc spring (112) and a second sleeve (113) are arranged on the second rotating shaft (109). The disc spring (112) is sleeved on the second rotating shaft (109) and is located between the chuck and the second bearing (111). The second sleeve (113) is sleeved on the second rotating shaft (109) and is located between the two second bearings (111).

4. The developing roller end coating device according to claim 1, characterized in that, The coating mechanism (5) includes a support frame (51), a linear module (52) moving along the X-axis direction, a first connecting frame (53), a first fixing plate (54), a bidirectional driving mechanism (55) moving along the Y-axis direction, two coating assemblies (56), a second fixing plate (57), and a lifting driving mechanism (58) moving along the Z-axis direction. The linear module (52) is installed on the support frame (51). The driving end of the linear module (52) is connected to one end of the first connecting frame (53). The other end of the first connecting frame (53) is slidably mated with the support frame (51). The first fixing plate (54) is installed at the bottom end of the first connecting frame (53). Two symmetric coating assemblies (56) are symmetrically installed on the first fixing plate (54) and are slidably mated with the first fixing plate (54) along the Y-axis direction. The tops of the two symmetric coating assemblies (56) are slidably mated with the second fixing plate (57) along the Y-axis direction. The bidirectional driving mechanism (55) is installed at one end of the first fixing plate (54). The two driving ends of the bidirectional driving mechanism (55) are respectively connected to the two coating assemblies (56). The driving end of the lifting driving mechanism (58) is connected to the second fixing plate (57) through a transmission component. The coating assembly (56) includes an L-shaped moving seat (561), an L-shaped connecting plate (562), and a plurality of paint coating mechanisms (563) sequentially and spacedly arranged. The bottom of the L-shaped moving seat (561) is slidably mated with the first fixing plate (54) along the Y-axis direction. The side end of the L-shaped connecting plate (562) is slidably mated with the side end of the L-shaped moving seat (561) along the Z-axis direction. The top end of the L-shaped connecting plate (562) is slidably mated with the second fixing plate (57) along the Y-axis direction. The L-shaped connecting plate (562) and the plurality of paint coating mechanisms (563) are adjustably connected through an adjusting plate (564). The lifting driving mechanism (58) is used to drive the second fixing plate (57) to drive the L-shaped connecting plate (562) and the plurality of paint coating mechanisms (563) to perform lifting movements. The adjusting plate (564) is provided with a waist-shaped hole (001) for adjusting the height of the paint coating mechanism (563).

5. The developing roller end coating device according to claim 4, characterized in that, The painting mechanism (563) includes a screw valve (114) and a paint nozzle (115). The screw valve (114) is connected to the paint nozzle (115). A first groove (002) is horizontally arranged in the paint outlet of the paint nozzle (115), and the paint outlet of the paint nozzle (115) is set as a plane.

6. The developing roller end coating device according to claim 4, wherein, The bidirectional driving mechanism (55) includes a first motor (551), a bidirectional T-shaped lead screw (552) and two first nut seats (553). The driving end of the first motor (551) is connected to the bidirectional T-shaped lead screw (552). The two first nut seats (553) are respectively in rotational threaded fit with the two ends of the bidirectional T-shaped lead screw (552). One ends of the two first nut seats (553) are respectively connected to the two coating assemblies (56) one by one. The first motor (551) drives the bidirectional T-shaped lead screw (552) to drive the two first nut seats (553) to move towards each other, and the first nut seats (553) drive the two coating assemblies (56) to move towards each other.

7. The developing roller end coating device according to claim 6, characterized in that, A first spring (554) is arranged on the tops of the two first nut seats (553), and two ends of the first spring (554) are respectively connected to the two first nut seats (553).

8. The developing roller end coating device according to claim 1, characterized in that, The jacking mechanism (3) includes a fixed frame (31), a second motor (32), a jacking plate (33), a guiding assembly (34) and two clamping assemblies (35) for clamping the tray (6). The fixed frame (31) is installed on the workbench (1) and is located below the conveying line (2). The second motor (32) is installed on the fixed frame (31). The driving end of the second motor (32) passes through the fixed frame (31) and is connected to the jacking plate (33). The jacking plate (33) is slidably connected to the fixed frame (31) through the guiding assembly (34). The two clamping assemblies (35) are symmetrically installed on the jacking plate (33) and move relatively. The clamping assembly (35) includes a first cylinder (351), a clamping jaw (352) and a profiling block (353) for adapting to the bottom of the tray (6). The driving end of the first cylinder (351) is connected to the clamping jaw (352). The profiling block (353) is installed at one end of the jacking plate (33). The first cylinder (351) is used to drive the clamping jaw (352) to move towards the profiling block (353) to clamp the bottom of the tray (6). The tray (6) includes two bearing frames (61), two second connecting frames (62) and two V-shaped reinforcing frames (63). The two second connecting frames (62) connect the two bearing frames (61). The two V-shaped reinforcing frames (63) respectively connect the middle parts of the two bearing frames (61). The bottom of the V-shaped reinforcing frame (63) is adapted to the top of the profiling block (353). A number of second grooves (611) for placing the ends of the developing rollers (9) are sequentially arranged at intervals on the bearing frame (61).

9. The developing roller end coating device according to claim 1, wherein A material collecting assembly (7) for collecting the residual wear-resistant paint of the coating mechanism (5) and two stoppers (8) for stopping the tray (6) are arranged on the workbench (1). The material collecting assembly (7) is located on one side of the clamping and rotating mechanism (4). The material collecting assembly (7) includes a material collecting tray (71), and the bottom of the material collecting tray (71) is connected to the workbench (1) through four vertically arranged first connecting plates (72). The stopper (8) is installed on the rack of the conveyor line (2) and is located on one side of the lifting mechanism (3).

10. A method for coating the end of a developing roller, which uses the developing roller end coating device according to any one of claims 1 to 9, characterized in that, The coating steps are as follows: The first step: The conveyor line (2) conveys the tray (6) loaded with the developing rollers (9) above the lifting mechanism (3), and the two stoppers (8) stop the tray (6). The second step: The lifting mechanism (3) drives the tray (6) to drive the plurality of developing rollers (9) to move upward to a specified position, so that the plurality of developing rollers (9) are located between the clamping and rotating mechanism (4). The third step: The first horizontal driving mechanism (411) of the clamping and rotating mechanism (4) drives the active rotating assembly (412) to move towards the plurality of developing rollers (9), clamps the plurality of developing rollers (9) on the driven rotating mechanism (42), the second horizontal driving mechanism (421) of the driven rotating mechanism (42) drives the driven rotating assembly (422) to clamp the plurality of developing rollers (9) again, the active rotating assembly (412) drives the plurality of developing rollers (9) to rotate simultaneously, and the lifting mechanism (3) drives the tray (6) to move downward to the initial position. The fourth step: The linear module (52) of the coating mechanism (5) drives the two coating assemblies (56) to move along the X-axis direction above the plurality of developing rollers (9), the lifting driving mechanism (58) drives the two coating assemblies (56) to move downward to a specified position, and then the bidirectional driving mechanism (55) drives the two coating assemblies (56) to move in opposite directions to the coating positions at both ends of the developing rollers (9), and the two coating assemblies (56) respectively perform painting operations on both ends of the plurality of developing rollers (9). The fifth step: After the coating is completed, the coating mechanism (5) moves above the material collecting assembly (7), the material collecting assembly (7) collects the residual wear-resistant paint of the coating mechanism (5), and at the same time, the active rotating mechanism (41) drives the plurality of developing rollers (9) to stop rotating, the lifting mechanism (3) drives the tray (6) to move upward to carry the plurality of developing rollers (9) that have completed the end coating, the lifting mechanism (3) drives the tray (6) to drive the plurality of developing rollers (9) to move downward, so that the tray (6) is located on the conveyor line (2), the two stoppers (8) are opened to stop blocking, and the conveyor line (2) conveys the tray (6) to the next workstation.

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