Curved-surface flexible labeling device

Abstract

The utility model provides a curved-surface flexible labeling device. The curved-surface flexible labeling device comprises a label conveying mechanism, a labeling mechanism arranged on the upper side of the label conveying mechanism, a workpiece fixing mechanism arranged on the right side of the label conveying mechanism and a workpiece supporting mechanism matched with the workpiece fixing mechanism, by arranging the label conveying mechanism, the labeling mechanism, the workpiece fixing mechanism and the workpiece supporting mechanism, a label can be automatically, flatly and efficiently attached to the curved surface of a curved-surface product, and compared with manual labeling, the efficiency of automatic labeling is improved, and meanwhile it can be ensured that the label is flat and is firmly attached; the labeling positioning is accurate, the consistency is good, the label direction and the attaching direction can be set, and the situations of missing attaching and wrong attaching are avoided; and the labeling operation is completed under the condition of high requirements on the labeling position, the labeling direction and the labeling angle.

Description

Technical Field

[0001] The utility model relates to the field of labeling devices, in particular to a curved surface flexible labeling device. Background Art

[0002] In industrial production, a large number of workpieces are produced. Labels need to be attached to the surfaces of these workpieces, and necessary information such as the serial number, type, specification, and manufacturer information of the workpieces will be marked on these labels. These labels will provide great convenience when recording information of the same kind of workpieces and differentiating different types of workpieces.

[0003] Combined with relevant technologies, the inventor found in practical applications that the existing labeling devices are generally only applicable to labeling on the flat surfaces of workpieces. When labeling some cylindrical workpieces with curved surfaces, manual labeling is mostly used. However, the manual labeling method not only has low efficiency but also causes some problems, such as: label wrinkles, poor adhesion; inaccurate label positioning, poor consistency; easy errors in label attachment directions, low qualified rate; and unable to complete the labeling operation for some labels with high requirements for label attachment positions, directions, and angles. Therefore, there is an urgent need for a curved surface flexible labeling device to achieve automatic labeling on the surfaces of curved surface workpieces. Summary of the Utility Model

[0004] In order to solve the problems of low efficiency of manual labeling, inaccurate label positioning, and easy errors in labeling directions in the prior art, the utility model provides a curved surface flexible labeling device;

[0005] The curved surface flexible labeling device provided by the utility model adopts the following technical solutions:

[0006] A curved surface flexible labeling device includes:

[0007] A label conveying mechanism, the label conveying mechanism includes a first mounting plate, a tape sensor, a label conveying roller group, a winding shaft, and a first mounting column; a winding shaft is rotatably connected to the side wall of the first mounting column, a label conveying roller group is fixedly installed on the side wall of the first mounting plate, and a tape sensor is arranged between the winding shaft and the label conveying roller group;

[0008] Labeling mechanism, the labeling mechanism is arranged above the label conveying mechanism, and the labeling mechanism includes a second mounting plate, a horizontal moving electric cylinder, a connecting plate, a first rotating cylinder, a telescopic cylinder, a second rotating cylinder and a label suction head; the side wall of the second mounting plate is fixedly installed with a horizontal moving electric cylinder through bolts, the cylinder body of the horizontal moving electric cylinder is fixedly installed with a first rotating cylinder through a connecting plate, the output end of the first rotating cylinder is fixedly installed with a telescopic cylinder through a connecting plate, the output end of the telescopic cylinder is fixedly installed with a second rotating cylinder for changing the label direction through a connecting plate, and the output end of the second rotating cylinder is fixedly installed with a label suction head;

[0009] Workpiece fixing mechanism, the workpiece fixing mechanism includes a second mounting column, an up-and-down moving electric cylinder, a connecting plate, a fixture platform and a workpiece clamping cylinder; the side wall of the second mounting column is fixedly installed with an up-and-down moving electric cylinder through bolts, the cylinder body of the up-and-down moving electric cylinder is fixedly installed with a fixture platform through a connecting plate, the top of the fixture platform is rotatably connected with a workpiece clamping cylinder, and the output end of the workpiece clamping cylinder is detachably connected with a workpiece jaw;

[0010] Workpiece supporting mechanism, the workpiece supporting mechanism includes a horizontally arranged mounting plate, a supporting electric cylinder and a supporting joint; the top of the horizontally arranged mounting plate is fixedly installed with a supporting electric cylinder through bolts, and the output end of the supporting electric cylinder is fixedly installed with a supporting joint.

[0011] Furthermore, the label conveying roller group includes a roller group motor, a tape tensioning brake, a label picking platform, a color sensor, a rubber roller, a pressing roller and a plurality of guide rollers; a through groove is formed in the side wall of the first mounting plate, a roller group motor is fixedly installed on the side wall of the first mounting plate through bolts, the output end of the roller group motor extends into the through groove and is connected with a first synchronous pulley, a rubber roller is rotatably connected to the side wall of the first mounting plate, a connecting rod of the rubber roller extends into the through groove and is connected with a second synchronous pulley, the first synchronous pulley and the second synchronous pulley are connected by a synchronous belt, and a pressing roller matched with the rubber roller is installed on the side wall of the first mounting plate; a plurality of guide rollers for conveying the label tape are rotatably connected to the side wall of the first mounting plate, and a tape tensioning brake is fixedly connected to the side wall of the first mounting plate; a label picking platform matched with the label suction head is fixedly installed on the side wall of the first mounting plate, and color sensors for detecting the position of the label on the label tape are respectively arranged on both sides of the label picking platform.

[0012] Furthermore, the label suction head is connected to an external vacuum pump, a label adsorption port for adsorbing the label is formed at the bottom of the label suction head, and an adsorption sponge is fixedly arranged at the bottom of the label adsorption port.

[0013] Further, the fixture platform includes a mounting table, a servo motor, and a rotating base; the cylinder body of the up-and-down moving electric cylinder is fixedly connected to the mounting table through a connecting plate, the servo motor is fixedly installed on the top of the mounting table through bolts, the output end of the servo motor passes through the mounting table and is connected to a third synchronous pulley, a through hole is opened at the top of the mounting table, a rotating base is rotatably connected in the through hole, a workpiece clamping cylinder is fixedly installed on the top of the rotating base, and a fourth synchronous pulley is installed at the bottom of the rotating base. The third synchronous pulley and the fourth synchronous pulley are connected by a synchronous belt for transmission.

[0014] Further, two rotating wheels are rotatably connected inside the support joint, and the support joint abuts against the side wall of the workpiece through the rotating wheels.

[0015] Further, the label conveying roller group further includes a recovery roller. The recovery roller is rotatably connected to the side wall of the first mounting plate. The end of the recovery roller passes through the first mounting plate and is connected to a driven wheel. The end of the connecting rod of the rubber roller is connected to a driving wheel. The driving wheel and the driven wheel are connected by a synchronous belt for transmission.

[0016] Further, the tape tensioning brake is connected to an external vacuum pump, and a plurality of label tape adsorption ports for adsorbing the label tape are opened at the top of the tape tensioning brake.

[0017] Further, adsorption holes matching the label adsorption ports are opened in the adsorption sponge.

[0018] In summary, the beneficial effects of the present utility model are as follows:

[0019] By setting a label conveying mechanism, a labeling mechanism, a workpiece fixing mechanism, and a workpiece supporting mechanism, the present utility model realizes automatic and efficient labeling on the curved surface of a curved surface product. Compared with manual labeling, this automatic labeling can ensure that the label is flat and firmly attached while improving the efficiency; the labeling positioning is accurate and the consistency is good, the label direction and the attachment direction can be set, and there will be no missed labeling or mislabeling; under the condition of high requirements for the label attachment position, direction, and angle, the labeling operation can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view structural schematic diagram of the present utility model;

[0021] Figure 2 is a front view structural schematic diagram of the present utility model;

[0022] Figure 3 is a rear view structural schematic diagram of the present utility model;

[0023] Figure 4 is an enlarged schematic diagram of the structure of the label conveying roller group of the present utility model;

[0024] Figure 5 This is a partially enlarged schematic view of the labeling mechanism of the present utility model;

[0025] Figure 6 This is a schematic view of the second rotating cylinder and the label suction head structure of the present utility model;

[0026] Figure 7 This is a schematic view of the fixture platform structure of the present utility model;

[0027] Figure 8 This is a partially enlarged schematic view of the lower side structure of the fixture platform of the present utility model;

[0028] Figure 9 This is a partially enlarged schematic view of the workpiece support mechanism of the present utility model;

[0029] Figure 10 This is a schematic view of the tape tensioning brake structure of the present utility model;

[0030] Figure 11 This is a schematic view of the running direction of the label tape inside the label conveying roller group of the present utility model.

[0031] As shown in the figure: 1 - First mounting plate, 12 - Tape sensor, 13 - Coiling shaft, 14 - First mounting column, 2 - Label conveying roller group, 21 - Roller group motor, 22 - Label picking platform, 221 - Tape tensioning brake, 2211 - Label tape adsorption port, 222 - Color sensor, 23 - Rubber roller, 24 - Pressing roller, 25 - Guide roller, 251 - Recycling roller, 252 - Driven wheel, 253 - Driving wheel, 26 - Through slot, 27 - First synchronous belt pulley, 28 - Second synchronous belt pulley, 3 - Second mounting plate, 31 - Horizontal moving electric cylinder, 32 - First rotating cylinder, 33 - Telescopic cylinder, 34 - Second rotating cylinder, 35 - Label suction head, 351 - Label adsorption port, 352 - Adsorption sponge, 353 - Adsorption hole, 4 - Second mounting column, 41 - Up and down moving electric cylinder, 42 - Workpiece clamping cylinder, 43 - Workpiece clamping jaw, 5 - Fixture platform, 51 - Mounting table, 52 - Servo motor, 53 - Rotating base, 54 - Third synchronous belt pulley, 55 - Fourth synchronous belt pulley, 6 - Horizontally mounted plate, 61 - Support electric cylinder, 62 - Support joint, 621 - Runner. Detailed implementation manners

[0032] The following will further describe the present utility model in detail in conjunction with the attached Figure 1 - attached Figure 11 drawings:

[0033] An embodiment of the present utility model discloses a curved surface flexible labeling device, such as Figure 1 , Figure 2 , Figure 3 , Figure 5As shown in the figure, a curved surface flexible labeling device of the present utility model includes:

[0034] A label conveying mechanism, which includes a first mounting plate 1, a tape sensor 12, a label conveying roller group 2, a winding shaft 13, and a first mounting column 14; a winding shaft 13 is rotatably connected to the side wall of the first mounting column 14, a label conveying roller group 2 is fixedly installed on the side wall of the first mounting plate 1, and a tape sensor 12 is arranged between the winding shaft 13 and the label conveying roller group 2;

[0035] A labeling mechanism, which is arranged above the label conveying mechanism. The labeling mechanism includes a second mounting plate 3, a horizontal moving electric cylinder 31, a connecting plate, a first rotating cylinder 32, a telescopic cylinder 33, a second rotating cylinder 34, and a label suction head 35; a horizontal moving electric cylinder 31 is fixedly installed on the side wall of the second mounting plate 3 through bolts, the cylinder body of the horizontal moving electric cylinder 31 is fixedly installed with a first rotating cylinder 32 through a connecting plate, the output end of the first rotating cylinder 32 is fixedly installed with a telescopic cylinder 33 through a connecting plate, the output end of the telescopic cylinder 33 is fixedly installed with a second rotating cylinder 34 for changing the label direction through a connecting plate, and the output end of the second rotating cylinder 34 is fixedly installed with a label suction head 35;

[0036] A workpiece fixing mechanism, which includes a second mounting column 4, a vertical moving electric cylinder 41, a connecting plate, a fixture platform 5, and a workpiece clamping cylinder 42; a vertical moving electric cylinder 41 is fixedly installed on the side wall of the second mounting column 4 through bolts, the cylinder body of the vertical moving electric cylinder 41 is fixedly installed with a fixture platform 5 through a connecting plate, a workpiece clamping cylinder 42 is rotatably connected to the top of the fixture platform 5, and the output end of the workpiece clamping cylinder 42 is detachably connected with a workpiece claw 43;

[0037] A workpiece supporting mechanism, which includes a horizontally arranged mounting plate 6, a supporting electric cylinder 61, and a supporting joint 62; a supporting electric cylinder 61 is fixedly installed on the top of the horizontally arranged mounting plate 6 through bolts, and the output end of the supporting electric cylinder 61 is fixedly installed with a supporting joint 62;

[0038] In this embodiment, the first mounting plate 1, the first mounting column 14, the second mounting plate 3, the second mounting column 4, and the horizontally arranged mounting plate 6 are all common components for installing mechanisms in the prior art. The above mechanisms can also be installed on the wall or the side wall of other machines, as long as the positional relationship between the mechanisms is as Figure 1 、 Figure 2 、 Figure 3 shown.

[0039] A label tape is wound around the winding shaft 13, and the label tape on the winding shaft 13 enters the label conveying roller group 2. The position of the tape sensor 12 is as Figure 1As shown, the tape sensor 12 is fixedly installed on the side wall of the first mounting plate 1 by bolts. The tape sensor 12 can detect whether there is a label tape between the coil shaft 13 and the label conveying roller group 2, and issue a prompt after the label tape on the coil shaft 13 is used up. Preferably, a printer position for installing a label printer is provided on the first mounting plate 1. When the label needs to be changed frequently, a label printer can be installed at the printer position. The coil shaft 13 can provide blank label tapes to be printed for the label printer, and enter the label conveying roller group 2 from the outlet of the label printer after being printed by the label printer.

[0040] A silent drag chain for wire routing is provided at the top of the horizontal moving electric cylinder 31. The horizontal moving electric cylinder 31 can drive the first rotating cylinder 32 to move in the horizontal direction. The connection modes of the first rotating cylinder 32, the telescopic cylinder 33, the second rotating cylinder 34, and the label suction head 35 are as Figure 1 , Figure 5 shown. The side wall of the telescopic cylinder 33 is connected to the output end of the first rotating cylinder 32 through a connecting plate. The connecting plate is a commonly used component for connecting cylinders in the prior art. By setting the first rotating cylinder 32, the telescopic cylinder 33, the second rotating cylinder 34, and the label suction head 35 can rotate together with the first rotating cylinder 32 as the center; by setting the second rotating cylinder 34, the label suction head 35 can be rotated after adsorbing the label, so as to adjust the direction of the label; it should be noted that the rotation directions of the first rotating cylinder 32 and the second rotating cylinder 34 are not the same. The virtual plane formed radially when the first rotating cylinder 32 rotates is perpendicular to the virtual plane formed radially when the second rotating cylinder 34 rotates in space.

[0041] The vertical moving electric cylinder 41 can move the fixture platform 5 in the vertical direction. The workpiece clamping cylinder 42 fixes the workpiece through the workpiece claws 43 at its output end. Different specifications of workpieces can be fixed by replacing different workpiece claws 43; by setting the vertical moving electric cylinder 41, the height of the workpiece at the top of the workpiece clamping cylinder 42 can be changed, so as to adjust the position and height of the label pasted on the workpiece.

[0042] The installation height of the horizontally installed plate 6 should be matched with the height of the workpiece. During the process of pasting labels on the workpiece, the support joint 62 should always be able to abut against the surface of the workpiece and provide support for the workpiece. By setting the support electric cylinder 61, the support force can be adjusted and workpieces of different thicknesses can be dealt with.

[0043] As Figure 2 , Figure 3 , Figure 4 , Figure 11As shown in the figure, the label conveying roller group 2 includes a roller group motor 21, a tape tensioning brake 221, a label picking platform 22, a color sensor 222, a rubber roller 23, a pressing roller 24, and several guide rollers 25; a through groove 26 is formed in the side wall of the first mounting plate 1, and the roller group motor 21 is fixedly mounted on the side wall of the first mounting plate 1 through bolts. The output end of the roller group motor 21 extends into the through groove 26 and is connected with a first synchronous pulley 27. A rubber roller 23 is rotatably connected to the side wall of the first mounting plate 1. The connecting rod of the rubber roller 23 extends into the through groove 26 and is connected with a second synchronous pulley 28. The first synchronous pulley 27 and the second synchronous pulley 28 are connected by a synchronous belt. A pressing roller 24 matched with the rubber roller 23 is mounted on the side wall of the first mounting plate 1; several guide rollers 25 for conveying the label tape are rotatably connected to the side wall of the first mounting plate 1, and a tape tensioning brake 221 is fixedly connected to the side wall of the first mounting plate 1; a label picking platform 22 matched with the label suction head 35 is fixedly mounted on the side wall of the first mounting plate 1, and color sensors 222 for detecting the position of the label on the label tape are arranged on both sides of the label picking platform 22; in this embodiment, the number of the guide rollers 25 is 4, and two limiting parts for limiting the label tape are arranged on the surface of each guide roller 25. The positional relationship among the label picking platform 22, the rubber roller 23, the pressing roller 24, and several guide rollers 25 is as shown in Figure 3 , 4 the figure. The running condition of the label tape in the label conveying roller group 2 is as shown in Figure 11 the figure. A second synchronous pulley 28 is connected to the connecting rod of the rubber roller 23 on one side of the through groove 26. The second synchronous pulley 28 and the first synchronous pulley 27 are in the same virtual vertical plane. The rubber roller 23 is driven by the roller group motor 21 to rotate to provide power for the entire label conveying roller group 2, so that the label tape can move in the roller group. By arranging the pressing roller 24 and the rubber roller 23, the label tape can obtain sufficient friction force to ensure that the label tape can run in the label conveying roller group 2 without slipping. The label tape passes through the space between the pressing roller 24 and the rubber roller 23 and is squeezed by the pressing roller 24 and the rubber roller 23. As the rubber roller 23 rotates, the label tape will move among the guide rollers 25, the label picking platform 22, the pressing roller 24, and the rubber roller 23.

[0044] The installation position of the color sensor 222 is as shown in Figure 4As shown, color sensors 222 are respectively arranged on the left and right sides of the label picking platform 22. Since there is a color difference between the label tape and the labels, the color sensors 222 can detect the positions of the labels. When the label tape runs to the label picking platform 22, the color sensor 222 on the left can detect the position of the label and the interval distance between the labels, and control the operation and stop of the roller group motor 21 according to the interval distance, so that the moving distance of the label tape each time is the distance between one label and one label interval, preventing missing the labels. As the label tape runs, since the label tape makes a turning change of nearly 180 degrees at the right edge of the label picking platform 22, when the edge of the label moves to the right edge of the label picking platform 22 along with the label tape, the edge of the label will peel off from the label tape by about 1 mm. At this time, the edge of the label will slightly protrude from the label picking platform 22 and be detected by the color sensor 222 on the right. Then, the telescopic cylinder 33 extends downward, and the label suction head 35 will press on the surface of the label closest to the edge and adsorb it. It should be noted that at this time, the label suction head 35 will not directly adsorb and remove the label, but will move to the right on the surface of the label picking platform 22 together with the label. The label suction head 35 will adsorb the label and continue to move to the right by the distance of one label driven by the horizontal moving cylinder 31, so that the label is completely separated from the label tape. It should be noted that the position and moving distance of the horizontal moving cylinder 31 are preset by the program and will automatically return to the preset position after the process is completed.

[0045] The installation position of the tape tension brake 221 is as Figure 4 shown. Since the moving distance of the label tape is relatively long, adding the tape tension brake 221 can provide a certain adsorption force to the label tape, making the contact between the label tape and each guide roller 25 and the label picking platform 22 closer; the tape tension brake 221 is connected to an external vacuum pump, and a number of label tape adsorption ports 2211 for adsorbing the label tape are opened at the top of the tape tension brake 221; the tape tension brake 221 is a commonly used device in the art. The tape tension brake 221 is provided with an adsorption force by an external vacuum pump. When the label tape passes over its top, a force is applied to the label tape through the label tape adsorption ports 2211 at the top, so that the label tape can closely adhere to the guide roller 25 and the label picking platform 22. Preferably, the pressing roller 24 is integrally of a structure that can be lifted. A pressing roller 24 base is fixedly installed on the side wall of the first mounting plate 1. A pressing roller 24 rotating seat is rotatably connected in the pressing roller 24 base. The pressing roller 24 is rotatably connected in the pressing roller 24 rotating seat. A top rod for restricting the falling position of the pressing roller 24 rotating seat is arranged on the lower side of the pressing roller 24 rotating seat. The top rod is fixed on the side wall of the first mounting plate 1. The pressing roller 24 can be lifted by rotating the pressing roller 24 rotating seat upward. Such a structure is more convenient for arranging the label tape.

[0046] As Figure 6As shown, the label suction head 35 is connected to an external vacuum pump. A label suction port 351 for adsorbing labels is provided at the bottom of the label suction head 35, and an adsorption sponge 352 is fixedly arranged at the bottom of the label suction port 351. In this embodiment, the label suction head 35 is provided with suction force by an external vacuum pump. Adsorption holes 353 matching the label suction port 351 are provided on the adsorption sponge 352, and the adsorption sponge 352 releases suction force through the adsorption holes 353. The height of the adsorption sponge 352 needs to be higher than the side wall at the label suction port 351 and extend to the outside of the label suction port 351. The advantage of doing this is that when the label suction head 35 adsorbs the label and presses it on the curved side wall of the workpiece, the adsorption sponge 352 will bend along the curved side wall of the workpiece, fully adapting to the curvature of the workpiece, and then proceeding to the next process.

[0047] As Figure 1 , Figure 2 , Figure 7 , Figure 8 shown, the fixture platform 5 includes a mounting table 51, a servo motor 52, and a rotating base 53. The cylinder body of the vertical moving electric cylinder 41 is fixedly connected with the mounting table 51 through a connecting plate. The servo motor 52 is fixedly installed at the top of the mounting table 51 through bolts. The output end of the servo motor 52 passes through the mounting table 51 and is connected with a third synchronous pulley 54. A through hole is provided at the top of the mounting table 51, and the rotating base 53 is rotatably connected in the through hole. A workpiece clamping cylinder 42 is fixedly installed at the top of the rotating base 53, and a fourth synchronous pulley 55 is installed at the bottom of the rotating base 53. The third synchronous pulley 54 and the fourth synchronous pulley 55 are connected by a synchronous belt for transmission. In this embodiment, the rotating base 53 is as Figure 7 , Figure 8 shown, the rotating base 53 can rotate by itself. The rotating base 53 is connected to the mounting table 51 through bolts. The rotating base 53 passes through the mounting table 51 and extends on both the upper and lower sides of the mounting table 51. The workpiece clamping cylinder 42 is installed on the upper part of the rotating base 53, and the fourth synchronous pulley 55 is installed on the lower part of the rotating base 53. When the servo motor 52 rotates, the fourth synchronous pulley 55 is driven to rotate by the third synchronous pulley 54 at the output end, driving the rotating base 53 to rotate, and then the workpiece clamping cylinder 42 clamps the workpiece and rotates together.

[0048] As Figure 1 , Figure 9 shown, two rotating wheels 621 are rotatably connected inside the support joint 62, and the support joint 62 abuts against the side wall of the workpiece through the rotating wheels 621. In this embodiment, the setting method of the rotating wheels 621 is as Figure 9 shown. By setting two rotating wheels 621, when the servo motor 52 drives the workpiece clamping cylinder 42 and the workpiece to rotate, the two rotating wheels 621 can both provide necessary support and do not hinder the rotation of the workpiece.

[0049] As shown in Figure 2 , Figure 3 , Figure 11 , the label conveying roller group 2 further includes a recovery roller 251. The side wall of the first mounting plate 1 is rotatably connected with the recovery roller 251. The end of the recovery roller 251 passes through the first mounting plate 1 and is connected with a driven wheel 252. The end of the connecting rod of the rubber roller 23 is connected with a driving wheel 253. The driving wheel 253 and the driven wheel 252 are connected by a synchronous belt for transmission. In this embodiment, the specific position of the recovery roller 251 is as shown in Figure 2 , Figure 3 . The connecting rod of the rubber roller 23 extends outwards and its end is connected with a driving wheel 253. The driving wheel 253 and the driven wheel 252 are in the same virtual vertical plane. When the driving wheel 253 rotates, it will drive the driven wheel 252 to rotate, and the driven wheel 252 will drive the recovery roller 251 to rotate. The driving wheel 253 and the second synchronous belt pulley 28 are both at the end of the connecting rod on the side of the through groove 26 and have the same axial center position. During the process of the first synchronous belt pulley 27 driving the second synchronous belt pulley 28 to rotate, the driving wheel 253 and the driven wheel 252 will also drive the recovery roller 251 to rotate synchronously.

[0050] The implementation principle of the embodiment of the present utility model is as follows:

[0051] First, in the label picking process, the printed label strip is wound around the winding shaft 13, and one end of the label strip is connected into the label conveying roller group 2. The roller group motor 21 is started to make the label strip start to move in the label conveying roller group 2. When the color sensor 222 on the right side detects that the edge of the label slightly protrudes from the label picking platform 22, the telescopic cylinder 33 will extend downward, and the label suction head 35 will press on the surface of the label closest to the edge and adsorb it. As the label strip runs, since the label strip makes a turning change of nearly 180 degrees at the right edge of the label picking platform 22, when the edge of the label moves to the right edge of the label picking platform 22 along with the label strip, the edge of the label will be peeled off from the label strip by about 1 millimeter. The label suction head 35 will adsorb the label and continue to move to the right by the distance of one label under the drive of the horizontal moving electric cylinder 31, so that the label is completely separated from the label strip, and thus the label picking is completed.

[0052] Secondly, perform the labeling process. The electric cylinder 41 moves up and down to start moving the workpiece to the position where labeling is to be performed. The first rotary cylinder 32 starts to rotate the label suction head 35 by 90 degrees towards the workpiece while the label is adsorbed. At this time, the label suction head 35 is facing the workpiece inside the workpiece gripper 43. The horizontal moving electric cylinder 31 moves towards the workpiece, causing the label suction head 35 to contact the curved surface of the workpiece. The adsorption sponge 352 at the label suction head 35 will bend along the curved surface of the workpiece, fully adapting to the degree of the curved surface of the workpiece. Then, the servo motor 52 starts, causing the workpiece clamping cylinder 42 to clamp the workpiece and rotate it left and right respectively, so that the edge of the label is closely pasted on the curved surface of the workpiece, thus completing the labeling.

[0053] Repeat the above steps to complete the flexible labeling of the curved surface of the workpiece.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Each component mentioned in the present invention is a common technology in the existing field. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A curved surface flexible labeling device, characterized in that, Including: A label conveying mechanism, which includes a first mounting plate (1), a tape sensor (12), a label conveying roller set (2), a coiling shaft (13), and a first mounting column (14); a coiling shaft (13) is rotatably connected to the side wall of the first mounting column (14), a label conveying roller set (2) is fixedly installed on the side wall of the first mounting plate (1), and a tape sensor (12) is arranged between the coiling shaft (13) and the label conveying roller set (2); A labeling mechanism, which is arranged above the label conveying mechanism. The labeling mechanism includes a second mounting plate (3), a horizontal moving electric cylinder (31), a connecting plate, a first rotating cylinder (32), a telescopic cylinder (33), a second rotating cylinder (34), and a label suction head (35); a horizontal moving electric cylinder (31) is fixedly installed on the side wall of the second mounting plate (3) by bolts, the cylinder body of the horizontal moving electric cylinder (31) is fixedly installed with a first rotating cylinder (32) through the connecting plate, the output end of the first rotating cylinder (32) is fixedly installed with a telescopic cylinder (33) through the connecting plate, the output end of the telescopic cylinder (33) is fixedly installed with a second rotating cylinder (34) for changing the label direction through the connecting plate, and the output end of the second rotating cylinder (34) is fixedly installed with a label suction head (35); A workpiece fixing mechanism, which includes a second mounting column (4), a vertical moving electric cylinder (41), a connecting plate, a fixture platform (5), and a workpiece clamping cylinder (42); a vertical moving electric cylinder (41) is fixedly installed on the side wall of the second mounting column (4) by bolts, the cylinder body of the vertical moving electric cylinder (41) is fixedly installed with a fixture platform (5) through the connecting plate, a workpiece clamping cylinder (42) is rotatably connected to the top of the fixture platform (5), and the output end of the workpiece clamping cylinder (42) is detachably connected with a workpiece jaw (43); A workpiece supporting mechanism, which includes a horizontally arranged mounting plate (6), a supporting electric cylinder (61), and a supporting joint (62); a supporting electric cylinder (61) is fixedly installed on the top of the horizontally arranged mounting plate (6) by bolts, and the output end of the supporting electric cylinder (61) is fixedly installed with a supporting joint (62).

2. The surface flexible labeling device according to claim 1, wherein, The label conveying roller group (2) includes a roller group motor (21), a tape tensioning brake (221), a label picking platform (22), a color sensor (222), a rubber roller (23), a pressing roller (24), and a number of guide rollers (25); a through groove (26) is formed in the side wall of the first mounting plate (1), the roller group motor (21) is fixedly mounted on the side wall of the first mounting plate (1) by bolts, the output end of the roller group motor (21) extends into the through groove (26) and is connected with a first synchronous pulley (27), the rubber roller (23) is rotatably connected to the side wall of the first mounting plate (1), the connecting rod of the rubber roller (23) extends into the through groove (26) and is connected with a second synchronous pulley (28), the first synchronous pulley (27) and the second synchronous pulley (28) are connected by a synchronous belt, the side wall of the first mounting plate (1) is provided with a pressing roller (24) cooperating with the rubber roller (23); a number of guide rollers (25) for conveying the label tape are rotatably connected to the side wall of the first mounting plate (1), and the side wall of the first mounting plate (1) is fixedly connected with a tape tensioning brake (221); a label picking platform (22) cooperating with the label suction head (35) is fixedly mounted on the side wall of the first mounting plate (1), and color sensors (222) for detecting the position of the label on the label tape are respectively arranged on both sides of the label picking platform (22).

3. The surface flexible labeling device according to claim 2, wherein, The label suction head (35) is connected to an external vacuum pump, a label adsorption port (351) for adsorbing the label is formed at the bottom of the label suction head (35), and an adsorption sponge (352) is fixedly arranged at the bottom of the label adsorption port (351).

4. A curved surface flexible labeling device according to claim 3, wherein, The fixture platform (5) includes a mounting table (51), a servo motor (52), and a rotating base (53); the cylinder body of the vertical moving electric cylinder (41) is fixedly connected with the mounting table (51) through a connecting plate, the servo motor (52) is fixedly mounted on the top of the mounting table (51) by bolts, the output end of the servo motor (52) passes through the mounting table (51) and is connected with a third synchronous pulley (54), a through hole is formed in the top of the mounting table (51), the rotating base (53) is rotatably connected in the through hole, a workpiece clamping cylinder (42) is fixedly mounted on the top of the rotating base (53), a fourth synchronous pulley (55) is mounted at the bottom of the rotating base (53), and the third synchronous pulley (54) and the fourth synchronous pulley (55) are connected by a synchronous belt.

5. A curved surface flexible labeling device according to claim 4, characterized in that, Two rotating wheels (621) are rotatably connected inside the support joint (62), and the support joint (62) abuts against the side wall of the workpiece through the rotating wheels (621).

6. The surface flexible labeling device according to claim 2, characterized in that, The label conveying roller group (2) further includes a recovery roller (251), the recovery roller (251) is rotatably connected to the side wall of the first mounting plate (1), the end of the recovery roller (251) passes through the first mounting plate (1) and is connected with a driven wheel (252), the end of the connecting rod of the rubber roller (23) is connected with a driving wheel (253), and the driving wheel (253) and the driven wheel (252) are connected by a synchronous belt.

7. A curved surface flexible labeling device according to claim 2, wherein The tape tensioning brake (221) is connected to an external vacuum pump, and a plurality of label tape adsorption ports (2211) for adsorbing the label tape are formed at the top of the tape tensioning brake (221).

8. A curved surface flexible labeling device according to claim 3, characterized in that, Adsorption holes (353) matching the label adsorption ports (351) are formed in the adsorption sponge (352).

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