Automatic labeling equipment based on visual inspection

Abstract

The invention discloses automatic labeling equipment based on visual inspection, and relates to the technical field of automatic labeling, the automatic labeling equipment comprises a material conveying mechanism, the material conveying mechanism comprises a rack, and the rack is provided with a feeding conveying belt and a defective product conveying belt; the labeling mechanism comprises a buffer assembly, the bottom end of the buffer assembly is connected with a ventilation seat, and the bottom of the ventilation seat is in threaded connection with a labeling adsorption assembly; the spatial displacement mechanism is arranged on the rear side of the material conveying mechanism; and the detecting and pushing mechanism is arranged on the rear side of the conveying mechanism. The multiple light springs are embedded in the thickened sponge adsorption layer, the multiple light springs are matched with the thickened sponge adsorption layer to achieve the buffering effect, meanwhile, the multiple light springs support the thickened sponge adsorption layer, so that the thickened sponge adsorption layer can rapidly rebound, collapse of the thickened sponge adsorption layer is avoided, and the service life of the device is prolonged. And the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic labeling, and in particular to an automatic labeling device based on visual detection. Background Art

[0002] Labeling equipment is to attach various labels to products, such as codes, QR codes, product information and other labels. Labeling products can mark the products, thereby achieving traceability of product production. With the development of industrialization, the traditional manual labeling method has gradually been replaced by machines, and various labeling equipment has also emerged. Labeling machines have become an indispensable part of modern packaging.

[0003] At present, labeling machines basically use an adsorption head to absorb labels, and use a cylinder to push the adsorption head downward to press the label onto the surface of the product. The adsorption head uses a vacuum sponge suction cup. When the sponge layer of the vacuum sponge suction cup is thin, the label cannot be completely fitted to the product with an uneven surface during labeling, resulting in an unreliable label adhesion. When the sponge layer of the vacuum sponge suction cup is thick, the sponge layer is prone to collapse under repeated vacuum negative pressure and extrusion, affecting the use effect. At the same time, the adsorption head is usually connected with bolts, which makes the installation and disassembly of the adsorption head very troublesome and inconvenient. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic labeling device based on visual inspection to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: an automatic labeling device based on visual detection, comprising:

[0006] A feeding mechanism, the feeding mechanism comprising a frame, on which a feeding conveyor belt and a defective product conveyor belt are arranged;

[0007] The label supply mechanism is arranged at the rear side of the feeding mechanism. The label supply mechanism is a public technology and will not be described in detail here.

[0008] The labeling mechanism comprises a buffer assembly, the bottom end of the buffer assembly is connected to a vent seat, the bottom of the vent seat is threadedly connected to a labeling adsorption assembly, the left and right sides of the buffer assembly are respectively connected to a vacuum pump and a hot air blower, the vacuum pump and the hot air blower are respectively connected to the vent seat through a hose, a driving assembly for driving the labeling adsorption assembly to rotate is arranged on the vent seat, and a CCD positioning camera is arranged on the buffer assembly;

[0009] A spatial displacement mechanism, which is arranged at the rear side of the feeding mechanism and is located next to the label supply mechanism. The spatial displacement mechanism includes a lifting assembly that drives the labeling mechanism to move up and down, an X-axis moving assembly that drives the lifting assembly to move horizontally, and a Y-axis moving assembly that drives the X-axis moving assembly to move longitudinally. Both the X-axis moving assembly and the Y-axis moving assembly are public technologies and are not described in detail here.

[0010] The detection and pushing mechanism is arranged at the rear side of the feeding mechanism, and the detection and pushing mechanism is located on the right side of the spatial displacement mechanism.

[0011] Preferably, a cavity is provided inside the vent seat, a rotary joint is connected to the bottom of the vent seat, an internal threaded barrel is connected to the bottom end of the rotary joint, and the inner cavity of the internal threaded barrel is connected to the cavity through the inner cavity of the rotary joint;

[0012] The labeling adsorption component includes a connecting tube, the top thread of the connecting tube is nested in the internal threaded tube, the bottom end of the connecting tube is connected to an adsorption seat, a thickened sponge adsorption layer is fixed to the bottom of the adsorption seat, an adsorption cavity is arranged inside the adsorption seat, a plurality of adsorption holes are evenly spaced at the bottom of the thickened sponge adsorption layer, the upper end ports of the adsorption holes extend to the bottom wall of the adsorption cavity, the inner cavity of the connecting tube is connected to the adsorption cavity, and a plurality of lightweight springs are inlaid inside the thickened sponge adsorption layer;

[0013] The thickened sponge adsorption layer can effectively adsorb the label and make the label contact with the product better. The setting of the light spring can buffer the pressure of the product and keep the thickened sponge adsorption layer fluffy to avoid collapse of the thickened sponge adsorption layer after multiple squeezing.

[0014] A sealing member is provided between the top end of the connecting pipe and the inner wall of the top of the internally threaded barrel, thereby improving the sealing performance of the connection between the connecting pipe and the internally threaded barrel and avoiding air leakage.

[0015] Preferably, the seal is annular and is made of silicone material. A buffer cavity is provided inside the seal, and a plurality of micro springs are nested at equal intervals inside the buffer cavity. The inner ring wall and the outer ring wall of the seal are both arranged in a wavy shape. Under the elastic force of the micro spring, the upper and lower ends of the seal can effectively contact the inner wall at the top of the internal threaded barrel and the top wall of the connecting tube, thereby improving the sealing performance of the connection between the connecting tube and the internal threaded barrel.

[0016] Preferably, a driven gear is sleeved on the internal threaded cylinder;

[0017] The driving assembly comprises a motor, the motor is mounted on the rear side of the vent seat, the output end of the motor is connected to a driving gear, and the driving gear is meshed and connected with a driven gear;

[0018] The motor drives the driving gear to rotate, and the driving gear rotates and meshes with the driven gear to drive the internal threaded cylinder to rotate. The rotation of the internal threaded cylinder drives the labeling adsorption component connected to the bottom of the device to rotate.

[0019] Preferably, the buffer assembly includes a mounting frame, a moving block is slidably nested inside the mounting frame, a buffer spring is provided between the upper side of the moving block and the top inner wall of the mounting frame, a connecting rod is connected to the bottom of the moving block, the lower end of the connecting rod slides through the bottom wall of the mounting frame, the lower end of the connecting rod is connected to the top of the vent seat, and a support plate is connected to the bottom of the front side of the mounting frame;

[0020] The vacuum pump is installed on the left wall of the mounting frame, the hot air blower is installed on the right wall of the mounting frame, and the CCD positioning camera is installed on the bottom of the support plate.

[0021] Preferably, the lifting assembly includes a moving seat, the moving seat is connected to the X-axis moving assembly, a first electric push rod is installed on the top of the moving seat, the output end of the first electric push rod passes through the top wall of the moving seat and is connected to the top of the mounting frame, and the first electric push rod can push the labeling mechanism downward or upward.

[0022] Preferably, the output end of the vacuum pump is connected to a suction pipe, and one end of the suction pipe away from the vacuum pump is connected to a vent seat;

[0023] The output end of the hot air blower is connected to an air supply pipe, and one end of the air supply pipe away from the hot air blower is connected to a ventilation seat;

[0024] The inner cavities of the air intake pipe and the air supply pipe are both connected to the cavity, and the air intake pipe and the air supply pipe are both equipped with a one-way valve;

[0025] The vacuum pump draws air from the ventilation seat through the suction pipe, so that the ventilation seat is in a negative pressure state, so that the bottom of the labeling adsorption component is in a negative pressure state, which is convenient for adsorbing the label. The hot air blower inputs hot air into the ventilation seat through the air supply pipe. The hot air is discharged from the bottom of the labeling adsorption component, so that the label is separated from the labeling adsorption component. At the same time, the hot air heats the label, so that the label is effectively bonded to the product, and when the hot air is sprayed out, it generates pressure on the label, which is further conducive to the bonding of the label to the product.

[0026] Preferably, a PLC controller is installed on the frame, the output end of the CCD positioning camera is electrically connected to the input end of the PLC controller, the output end of the PLC controller is electrically connected to the output ends of the vacuum pump, the hot air blower and the motor respectively, the output end of the PLC controller is electrically connected to the first electric push rod, the X-axis moving assembly and the Y-axis moving assembly respectively, and the PLC controller is electrically connected to a PC processing end.

[0027] Preferably, the detection and pushing mechanism includes a first bracket, the first bracket is fixed to the rear side of the frame, a second electric push rod is installed on the rear side of the first bracket, the telescopic end of the second electric push rod slides through the first bracket and is connected to a push plate, a second bracket is fixed on the top of the first bracket, a CCD detection camera is connected to the bottom of the top wall of the second bracket, the CCD detection camera is located just above the feeding conveyor belt, and the output end of the CCD detection camera is electrically connected to the input end of the PLC controller;

[0028] The CCD detection camera takes photos of the labeled products on the feeding conveyor belt and transmits the photos to the PLC controller. The PLC controller compares the taken photos with the correct standard label images stored internally to determine whether the labels are qualified. If they are qualified, the second electric push rod will not work. If they are unqualified, the second electric push rod will work to push the push plate, so that the push plate moves to push the unqualified labeled products and push them to the defective product conveyor belt.

[0029] Preferably, the defective product conveyor belt is vertically arranged to the feeding conveyor belt, and the detection and pushing mechanism corresponds to the defective product conveyor belt. When unqualified labeling products appear, the detection and pushing mechanism pushes the unqualified products onto the defective product conveyor belt.

[0030] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0031] 1. By embedding multiple lightweight springs inside the thickened sponge absorption layer, when the labeling mechanism absorbs the label to squeeze the product for labeling, the thickened sponge absorption layer can fully fit the label with the product with uneven surface due to its own soft characteristics. Multiple lightweight springs and the thickened sponge absorption layer cooperate to play a buffering effect, buffering the pressure of the labeling mechanism on the product during labeling. At the same time, multiple lightweight springs support the thickened sponge absorption layer, so that the thickened sponge absorption layer can rebound quickly, avoiding the collapse of the thickened sponge absorption layer, and prolonging the service life;

[0032] 2. The connecting pipe on the labeling adsorption component is threadedly connected with the internal threaded barrel at the bottom of the vent seat, which makes the labeling adsorption component easy to install and easy to quickly disassemble and assemble, thereby facilitating the rapid replacement of the labeling adsorption component. A seal is provided between the top of the connecting pipe and the inner wall of the top of the internal threaded barrel. A plurality of micro springs are nested at equal intervals inside the seal. Under the elastic force of the micro springs, the upper and lower ends of the seal can effectively contact the inner wall of the top of the internal threaded barrel and the top wall of the connecting pipe, thereby improving the sealing performance of the connection between the connecting pipe and the internal threaded barrel and avoiding air leakage.

[0033] 3. By providing a hot air blower and an air supply pipe, when the labeling adsorption component drives the label to collide with the product, the hot air blower works to input hot air into the ventilation seat through the air supply pipe, and finally the hot air is discharged from the bottom of the labeling adsorption component, so that the label is separated from the labeling adsorption component. At the same time, the hot air generates wind pressure on the label, squeezes the label, so that the label effectively contacts the surface of the product, and the hot air heats the label, which is further conducive to the effective bonding of the label to the product, and improves the reliability of the label bonding on the product;

[0034] 4. By setting up a detection and pushing mechanism and a defective product conveyor belt, the CCD detection camera takes photos of the products on the feeding conveyor belt after labeling, and transmits the photos to the PLC controller. The PLC controller compares the photos with the correct standard label pictures stored internally to determine whether the label is qualified. If it is qualified, the second electric push rod does not work. If it is unqualified, the second electric push rod works to push the push plate, so that the push plate moves to push the unqualified labeled products and push them to the defective product conveyor belt;

[0035] 5. A driving assembly for driving the labeling adsorption assembly to rotate is arranged on the vent seat. The motor on the driving assembly drives the driving gear to rotate. The driving gear rotates and engages with the driven gear to drive the internal threaded cylinder to rotate. The rotation of the internal threaded cylinder drives the labeling adsorption assembly connected to the bottom of the device to rotate. The horizontal angle of the labeling adsorption assembly can be adjusted, and the labeling position can be made more accurate by cooperating with the spatial displacement mechanism, thereby improving the labeling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the connection between the lifting assembly and the labeling mechanism of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the labeling mechanism of the present invention;

[0040] Figure 4 For the present invention Figure 3 Another angle diagram of the;

[0041] Figure 5 It is a schematic diagram of the connection between the vent seat and the driving assembly of the present invention;

[0042] Figure 6 It is a three-dimensional cross-sectional view of the vent seat of the present invention;

[0043] Figure 7 It is a front cross-sectional view of the internal threaded barrel of the present invention;

[0044] Figure 8 is a three-dimensional cross-sectional view of the sealing member of the present invention;

[0045] Fig. 9 It is a schematic diagram of the structure of the labeling adsorption component of the present invention;

[0046] Fig.10 It is a three-dimensional cross-sectional view of the labeling adsorption component of the present invention;

[0047] Fig.11 It is a schematic diagram of the structure of the buffer assembly of the present invention;

[0048] Fig.12 It is a schematic diagram of the detection and pushing mechanism of the present invention.

[0049] Description of reference numerals:

[0050] 10. Feeding mechanism; 11. Rack; 12. Feeding conveyor belt; 13. Defective product conveyor belt; 14. PLC controller;

[0051] 20. Label supply agency;

[0052] 30. Labeling mechanism; 31. Buffer assembly; 311. Mounting frame; 312. Moving block; 313. Buffer spring; 314. Connecting rod; 315. Support plate; 32. Ventilation seat; 321. Cavity; 322. Rotary joint; 323. Internal threaded cylinder; 324. Driven gear; 33. Labeling adsorption assembly; 331. Connecting pipe; 332. Adsorption seat; 333. Thickened sponge adsorption layer; 334. Adsorption cavity; 335. Adsorption hole; 336. Light spring; 34. Vacuum pump; 341. Suction pipe; 35. Hot air blower; 351. Air supply pipe; 36. Driving assembly; 361. Motor; 362. Driving gear; 37. CCD positioning camera; 38. Seal; 381. Buffer cavity; 382. Micro spring;

[0053] 40. Spatial displacement mechanism; 41. Lifting assembly; 411. Moving seat; 412. First electric push rod; 42. X-axis moving assembly; 43. Y-axis moving assembly;

[0054] 50. Detection pushing mechanism; 51. First bracket; 52. Second electric push rod; 53. Push plate; 54. Second bracket; 55. CCD detection camera. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0056] The present invention provides Figures 1 to 5 and Figures 9 to 12 An automatic labeling device based on visual inspection is shown, comprising:

[0057] The feeding mechanism 10 includes a frame 11, on which a feeding conveyor belt 12 and a defective product conveyor belt 13 are arranged;

[0058] The label supply mechanism 20 is disposed at the rear side of the feeding mechanism 10. The label supply mechanism 20 is a public technology and will not be described in detail herein.

[0059] The labeling mechanism 30 includes a buffer assembly 31, the bottom end of the buffer assembly 31 is connected to a vent seat 32, the bottom of the vent seat 32 is threadedly connected to a labeling adsorption assembly 33, the left and right sides of the buffer assembly 31 are respectively connected to a vacuum pump 34 and a hot air blower 35, the vacuum pump 34 and the hot air blower 35 are respectively connected to the vent seat 32 through a hose, a driving assembly 36 for driving the labeling adsorption assembly 33 to rotate is provided on the vent seat 32, and a CCD positioning camera 37 is provided on the buffer assembly 31;

[0060] The spatial displacement mechanism 40 is arranged at the rear side of the feeding mechanism 10 and is located beside the label supply mechanism 20. The spatial displacement mechanism 40 includes a lifting assembly 41 for driving the labeling mechanism 30 to move up and down, an X-axis moving assembly 42 for driving the lifting assembly 41 to move horizontally, and a Y-axis moving assembly 43 for driving the X-axis moving assembly 42 to move longitudinally. Both the X-axis moving assembly 42 and the Y-axis moving assembly 43 are public technologies and are not described in detail herein.

[0061] The detection and pushing mechanism 50 is arranged at the rear side of the feeding mechanism 10 , and the detection and pushing mechanism 50 is located on the right side of the spatial displacement mechanism 40 .

[0062] The labeling adsorption component 33 includes a connecting tube 331, the bottom end of the connecting tube 331 is connected to an adsorption seat 332, a thickened sponge adsorption layer 333 is fixed to the bottom of the adsorption seat 332, an adsorption cavity 334 is arranged inside the adsorption seat 332, a plurality of adsorption holes 335 are arranged at equal intervals at the bottom of the thickened sponge adsorption layer 333, the upper end ports of the adsorption holes 335 extend to the bottom wall of the adsorption cavity 334, the inner cavity of the connecting tube 331 is connected to the adsorption cavity 334, and a plurality of lightweight springs 336 are inlaid inside the thickened sponge adsorption layer 333;

[0063] The thickened sponge adsorption layer 333 can effectively adsorb the label and make the label contact with the product well. The setting of the lightweight spring 336 can buffer the pressure of the product and keep the thickened sponge adsorption layer 333 fluffy, thereby preventing the thickened sponge adsorption layer 333 from collapsing after being squeezed multiple times.

[0064] The buffer assembly 31 includes a mounting frame 311, a moving block 312 is slidably nested inside the mounting frame 311, a buffer spring 313 is provided between the upper side of the moving block 312 and the top inner wall of the mounting frame 311, a connecting rod 314 is connected to the bottom of the moving block 312, the lower end of the connecting rod 314 slides through the bottom wall of the mounting frame 311, the lower end of the connecting rod 314 is connected to the top of the vent seat 32, and a support plate 315 is connected to the front bottom of the mounting frame 311;

[0065] The vacuum pump 34 is installed on the left wall of the mounting frame 311 , the hot air blower 35 is installed on the right wall of the mounting frame 311 , and the CCD positioning camera 37 is installed on the bottom of the support plate 315 .

[0066] The lifting assembly 41 includes a moving seat 411, which is connected to the X-axis moving assembly 42. A first electric push rod 412 is installed on the top of the moving seat 411. The output end of the first electric push rod 412 passes through the top wall of the moving seat 411 and is connected to the top of the mounting frame 311. The first electric push rod 412 can push the labeling mechanism 30 downward or upward.

[0067] The output end of the vacuum pump 34 is connected to a suction pipe 341, and one end of the suction pipe 341 away from the vacuum pump 34 is connected to the vent seat 32;

[0068] The output end of the hot air blower 35 is connected to an air supply pipe 351, and one end of the air supply pipe 351 away from the hot air blower 35 is connected to the ventilation seat 32;

[0069] The inner cavities of the air intake pipe 341 and the air supply pipe 351 are both connected to the cavity 321, and a one-way valve is installed on the air intake pipe 341 and the air supply pipe 351;

[0070] The vacuum pump 34 extracts the air in the ventilation seat 32 through the suction pipe 341, so that the ventilation seat 32 is in a negative pressure state, so that the bottom of the labeling adsorption component 33 is in a negative pressure state, which is convenient for adsorbing the label. The hot air blower 35 inputs hot air into the ventilation seat 32 through the air supply pipe 351, and the hot air is discharged from the bottom of the labeling adsorption component 33, so that the label is separated from the labeling adsorption component 33. At the same time, the hot air heats the label, so that the label is effectively bonded to the product, and when the hot air is sprayed out, it generates pressure on the label, which is further conducive to the bonding of the label to the product.

[0071] A PLC controller 14 is installed on the frame 11. The output end of the CCD positioning camera 37 is electrically connected to the input end of the PLC controller 14. The output end of the PLC controller 14 is electrically connected to the output ends of the vacuum pump 34, the hot air blower 35 and the motor 361 respectively. The output end of the PLC controller 14 is electrically connected to the first electric push rod 412, the X-axis moving assembly 42 and the Y-axis moving assembly 43 respectively. The PLC controller 14 is electrically connected to the PC processing end.

[0072] The detection and pushing mechanism 50 includes a first bracket 51, which is fixed to the rear side of the frame 11, a second electric push rod 52 is installed on the rear side of the first bracket 51, the telescopic end of the second electric push rod 52 slides through the first bracket 51 and is connected to a push plate 53, a second bracket 54 is fixed to the top of the first bracket 51, a CCD detection camera 55 is connected to the bottom of the top wall of the second bracket 54, the CCD detection camera 55 is located just above the feeding conveyor belt 12, and the output end of the CCD detection camera 55 is electrically connected to the input end of the PLC controller 14;

[0073] The CCD detection camera 55 takes photos of the labeled products on the feeding conveyor belt 12 for detection, and transmits the photos to the PLC controller 14. The PLC controller 14 compares the taken photos with the correct standard label images stored internally to determine whether the labels are qualified. If they are qualified, the second electric push rod 52 does not work. If they are unqualified, the second electric push rod 52 works to push the push plate 53, so that the push plate 53 moves to push the unqualified labeled products and push them onto the defective product conveyor belt 13.

[0074] The defective product conveyor belt 13 is vertically arranged with respect to the feeding conveyor belt 12 , and the detection and pushing mechanism 50 corresponds to the defective product conveyor belt 13 . When unqualified labeling products appear, the detection and pushing mechanism 50 pushes the unqualified products onto the defective product conveyor belt 13 .

[0075] In the present invention, the label supply mechanism 20, the X-axis moving assembly 42 and the Y-axis moving assembly 43 are all public technologies and are not described in detail herein. The products to be labeled are sequentially placed on the left end of the feeding conveyor belt 12, the feeding conveyor belt 12 transports the products to be labeled to the right, and the label supply mechanism 20 starts to supply labels;

[0076] The PLC controller 14 controls the spatial displacement mechanism 40 to work through a set program, moves the labeling mechanism 30 to the top of the label, and the CCD positioning camera 37 on the labeling mechanism 30 takes a picture of the label, and then sends it to the PLC controller 14 for processing. The PLC controller 14 calculates the position information of the label, thereby controlling the spatial displacement mechanism 40 and the labeling mechanism 30, so that the spatial displacement mechanism 40 drives the labeling mechanism 30 to move, so that the thickened sponge adsorption layer 333 at the bottom of the labeling mechanism 30 contacts the label, and the vacuum pump 34 on the labeling mechanism 30 works to extract the air in the ventilation seat 32 through the suction pipe 341, so that the ventilation seat 32 is in a negative pressure state, so that the bottom of the labeling adsorption component 33 is in a negative pressure state, thereby adsorbing the label;

[0077] Then, under the action of the spatial displacement mechanism 40, it moves to the top of the feeding conveyor belt 12, and then the CCD positioning camera 37 works to take pictures of the products on the feeding conveyor belt 12, and then sends them to the PLC controller 14 for processing. The PLC controller 14 calculates the position information of the products, and at the same time, the feeding conveyor belt 12 stops working. The spatial displacement mechanism 40 cooperates with the labeling adsorption component 33 so that the labeling adsorption component 33 adheres the bottom label to the product;

[0078] When the bottom of the labeling adsorption component 33 drives the label to contact the product, the hot air blower 35 works to input hot air into the ventilation seat 32 through the air supply pipe 351, and finally the hot air is discharged from the bottom of the labeling adsorption component 33, so that the label is separated from the labeling adsorption component 33. At the same time, the hot air generates wind pressure on the label, squeezing the label so that the label is effectively in contact with the surface of the product, and the hot air heats the label, which is further conducive to the effective adhesion of the label to the product, and improves the reliability of the adhesion of the label to the product.

[0079] Then the labeling mechanism 30 and the spatial displacement mechanism 40 repeat the above work, adsorbing the label supplied by the label supply mechanism 20 and sticking it to the product on the feeding conveyor belt 12;

[0080] The feeding conveyor belt 12 drives the labeled products to continue to move to the right. When the labeled products pass through the detection and pushing mechanism 50, the CCD detection camera 55 on the detection and pushing mechanism 50 takes photos of the labeled products on the feeding conveyor belt 12 and transmits the photos to the PLC controller 14. The PLC controller 14 compares the photos with the correct standard label images stored internally to determine whether the labels are qualified. If they are qualified, the second electric push rod 52 does not work. If they are unqualified, the second electric push rod 52 works to push the push plate 53, so that the push plate 53 moves to push the unqualified labeled products and push them onto the defective product conveyor belt 13.

[0081] The thickened sponge absorption layer 333 at the bottom of the labeling mechanism 30 is inlaid with multiple lightweight springs 336. When the labeling mechanism 30 absorbs the label to squeeze the product to label, the thickened sponge absorption layer 333 can fully fit the label and the product with uneven surface due to its own soft characteristics. The multiple lightweight springs 336 and the thickened sponge absorption layer 333 cooperate to have a buffering effect, which can buffer the pressure of the labeling mechanism 30 on the product when labeling. At the same time, the support of the thickened sponge absorption layer 333 by the multiple lightweight springs 336 allows the thickened sponge absorption layer 333 to rebound quickly, avoid the collapse of the thickened sponge absorption layer 333, and increase its service life.

[0082] like Figures 4 to 9 As shown, a cavity 321 is provided inside the vent seat 32, a rotary joint 322 is connected to the bottom of the vent seat 32, an internal threaded tube 323 is connected to the bottom end of the rotary joint 322, and the inner cavity of the internal threaded tube 323 is connected to the cavity 321 through the inner cavity of the rotary joint 322;

[0083] The top end of the connecting tube 331 is threadedly embedded in the internal threaded tube 323 .

[0084] A driven gear 324 is sleeved on the internal threaded cylinder 323;

[0085] The driving assembly 36 includes a motor 361 , which is mounted on the rear side of the vent seat 32 . The output end of the motor 361 is connected to a driving gear 362 , and the driving gear 362 is meshedly connected to the driven gear 324 .

[0086] A seal 38 is provided between the top of the connecting tube 331 and the inner wall at the top of the internally threaded tube 323. The seal 38 is annular and is made of silicone material. A buffer cavity 381 is provided inside the seal 38. A plurality of micro springs 382 are nested at equal intervals inside the buffer cavity 381. The inner and outer walls of the seal 38 are both arranged in a wavy shape. Under the elastic force of the micro springs 382, ​​the upper and lower ends of the seal 38 can effectively contact the inner wall at the top of the internally threaded tube 323 and the top wall of the connecting tube 331, thereby improving the sealing performance of the connection between the connecting tube 331 and the internally threaded tube 323.

[0087] In the present invention, the connecting pipe 331 on the labeling adsorption component 33 is threadedly connected with the internal threaded tube 323 at the bottom of the vent seat 32, so that the labeling adsorption component 33 is easy to install and easy to quickly disassemble and assemble the labeling adsorption component 33, thereby facilitating the rapid replacement of the labeling adsorption component 33, and a sealing member 38 is provided between the top of the connecting pipe 331 and the inner wall of the top of the internal threaded tube 323, and a plurality of micro springs 382 are nested in the sealing member 38 at equal intervals. Under the elastic force of the micro springs 382, ​​the upper and lower ends of the sealing member 38 can effectively engage with the internal threaded tube 323 to form a seal. The inner wall at the top of the threaded cylinder 323 contacts the top wall of the connecting tube 331, thereby improving the sealing performance of the connection between the connecting tube 331 and the internally threaded cylinder 323 to avoid air leakage. The motor 361 drives the driving gear 362 to rotate, and the driving gear 362 rotates and engages with the driven gear 324 to drive the internally threaded cylinder 323 to rotate. The rotation of the internally threaded cylinder 323 drives the labeling adsorption component 33 connected to the bottom of the driver to rotate, which can adjust the horizontal angle of the labeling adsorption component 33 and cooperate with the spatial displacement mechanism 40 to make the labeling position more accurate and improve the labeling effect.

[0088] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic labeling device based on visual inspection, characterized in that: include: A material feeding mechanism (10), the material feeding mechanism (10) comprising a frame (11), the frame (11) being provided with a material feeding conveyor belt (12) and a defective product conveyor belt (13); A label supply mechanism (20), wherein the label supply mechanism (20) is arranged at the rear side of the feeding mechanism (10); A labeling mechanism (30), the labeling mechanism (30) comprising a buffer component (31), the bottom end of the buffer component (31) is connected to a vent seat (32), the bottom of the vent seat (32) is threadedly connected to a labeling adsorption component (33), the left and right sides of the buffer component (31) are respectively connected to a vacuum pump (34) and a hot air blower (35), the vacuum pump (34) and the hot air blower (35) are respectively connected to the vent seat (32) through a hose, the vent seat (32) is provided with a driving component (36) for driving the labeling adsorption component (33) to rotate, and the buffer component (31) is provided with a CCD positioning camera (37); A spatial displacement mechanism (40), the spatial displacement mechanism (40) being arranged at the rear side of the feeding mechanism (10), the spatial displacement mechanism (40) being located beside the label supply mechanism (20), the spatial displacement mechanism (40) comprising a lifting assembly (41) for driving the labeling mechanism (30) to move up and down, an X-axis moving assembly (42) for driving the lifting assembly (41) to move horizontally, and a Y-axis moving assembly (43) for driving the X-axis moving assembly (42) to move vertically; A detection and pushing mechanism (50) is provided at the rear side of the feeding mechanism (10), and the detection and pushing mechanism (50) is located to the right of the spatial displacement mechanism (40).

2. The automatic labeling equipment based on visual inspection according to claim 1, characterized in that: The vent seat (32) is provided with a cavity (321) inside, the bottom of the vent seat (32) is connected to a rotary joint (322), the bottom end of the rotary joint (322) is connected to an internal threaded cylinder (323), and the inner cavity of the internal threaded cylinder (323) is connected to the cavity (321) through the inner cavity of the rotary joint (322); The labeling adsorption component (33) comprises a connecting tube (331), the top end of the connecting tube (331) is threadedly embedded in the internal threaded cylinder (323), the bottom end of the connecting tube (331) is connected to an adsorption seat (332), the bottom of the adsorption seat (332) is fixed with a thickened sponge adsorption layer (333), an adsorption cavity (334) is provided inside the adsorption seat (332), a plurality of adsorption holes (335) are evenly spaced at the bottom of the thickened sponge adsorption layer (333), the upper end ports of the adsorption holes (335) extend to the bottom wall of the adsorption cavity (334), the inner cavity of the connecting tube (331) is connected to the adsorption cavity (334), and a plurality of lightweight springs (336) are embedded inside the thickened sponge adsorption layer (333); A sealing member (38) is provided between the top end of the connecting pipe (331) and the inner wall of the top of the internally threaded cylinder (323).

3. The automatic labeling equipment based on visual inspection according to claim 2, characterized in that: The sealing member (38) is annular and is made of silicone material. A buffer cavity (381) is provided inside the sealing member (38). A plurality of micro springs (382) are nested at equal intervals inside the buffer cavity (381). The inner ring wall and the outer ring wall of the sealing member (38) are both arranged in a wave shape.

4. The automatic labeling equipment based on visual inspection according to claim 2, characterized in that: The internal threaded cylinder (323) is sleeved with a driven gear (324); The driving assembly (36) comprises a motor (361), the motor (361) is mounted on the rear side of the vent seat (32), the output end of the motor (361) is connected to a driving gear (362), and the driving gear (362) is meshedly connected to a driven gear (324).

5. The automatic labeling equipment based on visual inspection according to claim 4, characterized in that: The buffer assembly (31) comprises a mounting frame (311), a moving block (312) is slidably nested inside the mounting frame (311), a buffer spring (313) is provided between the upper side of the moving block (312) and the top inner wall of the mounting frame (311), a connecting rod (314) is connected to the bottom of the moving block (312), the lower end of the connecting rod (314) slides through the bottom wall of the mounting frame (311), the lower end of the connecting rod (314) is connected to the top of the ventilation seat (32), and a support plate (315) is connected to the front bottom of the mounting frame (311); The vacuum pump (34) is installed on the left wall of the mounting frame (311), the hot air blower (35) is installed on the right wall of the mounting frame (311), and the CCD positioning camera (37) is installed at the bottom of the support plate (315).

6. The automatic labeling equipment based on visual inspection according to claim 5, characterized in that: The lifting assembly (41) comprises a moving seat (411), the moving seat (411) is connected to the X-axis moving assembly (42), a first electric push rod (412) is installed on the top of the moving seat (411), and an output end of the first electric push rod (412) passes through the top wall of the moving seat (411) and is connected to the top of the mounting frame (311).

7. The automatic labeling equipment based on visual inspection according to claim 1, characterized in that: The output end of the vacuum pump (34) is connected to a suction pipe (341), and one end of the suction pipe (341) away from the vacuum pump (34) is connected to a vent seat (32); The output end of the hot air blower (35) is connected to an air supply pipe (351), and one end of the air supply pipe (351) away from the hot air blower (35) is connected to a ventilation seat (32); The inner cavities of the air intake pipe (341) and the air supply pipe (351) are both connected to the cavity (321), and one-way valves are installed on the air intake pipe (341) and the air supply pipe (351).

8. The automatic labeling equipment based on visual inspection according to claim 6, characterized in that: A PLC controller (14) is installed on the frame (11); the output end of the CCD positioning camera (37) is electrically connected to the input end of the PLC controller (14); the output end of the PLC controller (14) is electrically connected to the output ends of the vacuum pump (34), the hot air blower (35) and the motor (361), respectively; the output end of the PLC controller (14) is electrically connected to the first electric push rod (412), the X-axis moving component (42) and the Y-axis moving component (43), respectively; and the PLC controller (14) is electrically connected to a PC processing end.

9. The automatic labeling equipment based on visual inspection according to claim 1, characterized in that: The detection and pushing mechanism (50) comprises a first bracket (51), the first bracket (51) is fixed on the rear side of the frame (11), a second electric push rod (52) is installed on the rear side of the first bracket (51), the telescopic end of the second electric push rod (52) slides through the first bracket (51) and is connected to a push plate (53), a second bracket (54) is fixed on the top of the first bracket (51), a CCD detection camera (55) is connected to the bottom of the top wall of the second bracket (54), the CCD detection camera (55) is located directly above the feeding conveyor belt (12), and the output end of the CCD detection camera (55) is electrically connected to the input end of the PLC controller (14).

10. The automatic labeling equipment based on visual inspection according to claim 9, characterized in that: The defective product conveyor belt (13) is arranged vertically with the feeding conveyor belt (12), and the detection and pushing mechanism (50) corresponds to the defective product conveyor belt (13).

Images