Automatic labeling line for labeling bottle caps

Abstract

The application discloses a kind of automatic labeling lines for bottle cap labeling, specifically relates to bottle cap production technical field, including bottle cap conveying structure, label conveying structure, bottle cap conveying structure includes two vertical to horizontal plane bottle cap conveying belt, bottle cap conveying belt is wound on bottle cap conveying roller, bottle cap conveying roller is rotatably connected in axle seat, one group axle seat is slidably connected in support, support is rotatably connected with label conveying belt, label conveying belt is connected with labeling rod, labeling rod is fixedly connected with labeling head, label conveying belt both ends are respectively provided with label supply structure, glue coating structure.The application adopts two groups of bottle cap conveying belt to carry out clamping and conveying, guarantee the centering degree of bottle cap in conveying process, one group of bottle cap conveying belt is slidably connected on support side, can adjust clamping space according to bottle cap diameter, while corresponding label conveying belt can also be adjusted side, can be labeled for different diameter bottle cap.

Description

Technical Field

[0001] This invention relates to the field of bottle cap production, specifically to an automatic labeling line for bottle cap labeling. Background Technology

[0002] After the bottle caps are processed and formed, labels need to be affixed to them to make them look nice or to achieve a promotional effect. The equipment used for the labeling process is a labeling machine. Existing labeling machines include a conveying structure and a labeling structure. During the process of conveying the bottle caps, the prepared label rolls are connected to the labeling structure. The label rolls rotate synchronously with the conveying structure, affixing the labels to the bottle caps on the conveying structure.

[0003] For example, patent document CN106628475B discloses a machine vision-based mirror imaging bottle cap surface labeling detection system and method. This system includes a conveyor belt, an action triggering system, a mirror imaging system, a rejection control system, and a rejection system. The action triggering system includes a light trigger sensor and an ultrasonic ranging sensor; the mirror imaging system includes an area array camera, a camera bracket, and a plane mirror; the rejection control system includes a host computer and a programmable logic controller; and the rejection system includes a nozzle, a rejection box, and an anti-tipping plate. The detection system and method of this invention have a simple structure and low mechanical cost; the bottle cap labeling detection speed is fast, and the system detection efficiency is high; at the same time, there is no bottle cap slippage, and the bottle cap labeling detection accuracy is high.

[0004] Existing labeling machines have a single labeling method, making it difficult to ensure the alignment of labels on bottle caps of different diameters and to adjust the labeling position on different bottle caps. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic labeling line for bottle cap labeling, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic labeling line for bottle caps includes a bottle cap conveying structure and a label conveying structure. The bottle cap conveying structure includes two bottle cap conveyor belts perpendicular to the horizontal plane. The bottle cap conveyor belts are wound around bottle cap conveyor rollers, which are rotatably connected to bearings. One set of bearings is slidably connected to a support. A label conveyor belt is rotatably connected to the support. A labeling rod is connected to the label conveyor belt, and a labeling head is fixedly connected to the labeling rod. A label supply structure and an adhesive application structure are respectively provided at both ends of the label conveyor belt.

[0008] Preferably, the label conveyor belt is wound around the label conveyor roller, one end of the label conveyor roller is rotatably connected to the label conveyor frame, the label conveyor frame is slidably connected to the arc-shaped slide, and the arc-shaped slide is slidably connected to the bracket.

[0009] Preferably, the labeling rod includes a fixed sleeve fixed on the label conveyor belt, a slide rod slidably connected inside the fixed sleeve, the slide rod is hollow inside and the outer end of the slide rod is connected to a labeling head, and the labeling head is a hollow rubber head with an adsorption hole at the end.

[0010] Preferably, the label conveyor is provided with a negative pressure chamber and a pressurizing chamber in the middle. The negative pressure chamber and the pressurizing chamber are alternately connected to the fixing sleeve. The fixing sleeve is fixed on the sealing strip. The sealing strip is slidably connected to the openings on the sides of the negative pressure chamber and the pressurizing chamber.

[0011] Preferably, the bottle cap conveying roller includes a metal support roller at the bottom, and a rubber support roller is fixedly connected above the metal support roller. The rubber support roller is hollow inside, and the lower half of the bottle cap conveyor belt is wrapped around the metal support roller and the upper half is wrapped around the rubber support roller.

[0012] Preferably, the outer side of the bottle cap conveyor belt is provided with a linear array of concave arc grooves, and a placement frame fixed on the support is provided between the two sets of bottle cap conveyor belts, and the shaft seat is connected to the support through a lifting cylinder.

[0013] Preferably, the conveyor frame includes connecting plates at both ends, and a connecting rod is provided between the connecting plates at both ends, with both ends of the connecting rod slidably connected to the connecting plates.

[0014] Preferably, the label supply structure includes a label cylinder, a baffle is provided at the bottom of the label cylinder, and a roller is rotatably connected to the baffle.

[0015] Preferably, the adhesive coating structure includes an adhesive coating roller, one side of which is connected to a glue trough, a scraper is fixedly connected to the glue trough, and a limiting sleeve that is axially slidably connected is fitted on the outside of the adhesive coating roller.

[0016] Preferably, the glue-applying roller is rotatably connected to the glue-applying frame, the glue-applying frame is fixed to the label conveying frame, and an adjusting screw is rotatably connected to the glue-applying frame. The adjusting screw passes through the limiting sleeve and is threadedly connected to the limiting sleeve.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Two sets of bottle cap conveyor belts are used for clamping and conveying to ensure the centering of the bottle caps during the conveying process. One set of bottle cap conveyor belts is laterally slidably connected to the bracket, which can adjust the clamping space according to the diameter of the bottle cap. At the same time, the corresponding label conveyor belt can also be laterally adjusted to label bottle caps of different diameters.

[0019] The label conveyor belt is slidably connected to the arc-shaped carriage. The tilt angle of the label conveyor belt can be adjusted according to the labeling position of the bottle cap, thereby adjusting the angle of the labeling rod connected to the label conveyor belt to meet the labeling requirements of bottle caps at different labeling positions.

[0020] The labeling rod has an internal channel that connects to a spherical rubber labeling head. The labeling rod has a telescopic structure. The label conveyor is equipped with a negative pressure chamber and a pressurization chamber to control the pressure of the labeling rod and the labeling head, so that the labeling rod and the labeling head are in different states at different stages during the movement of the label conveyor.

[0021] The bottle cap conveyor rollers are configured with a combination of metal support rollers and rubber support rollers for transmission. This can clamp the passing bottle caps to a certain extent and prevent plastic extrusion deformation or damage to the bottle caps. The bottle cap conveyor belt is equipped with a linear array of concave arc grooves to ensure uniform spacing between bottle caps. A conveyor frame is set between the two sets of bottle cap conveyor belts, and the bottle cap conveyor belts are designed to be liftable and adjustable according to the length of the bottle caps to ensure that the labeling position of the bottle caps is above the bottle cap conveyor belt.

[0022] In the label supply structure, labels are positioned and placed, and a labeling head automatically picks up and carries away individual labels. The gluing structure uses a labeling roller with an adjustable sliding limit sleeve on the outside to apply glue to the labels carried on the labeling head, avoiding glue from being applied to the labeling head. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the tag conveying structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the bottle cap conveying structure of the present invention;

[0026] Figure 4 This is a cross-sectional view of the labeling head and labeling rod of the present invention;

[0027] Figure 5 This is a cross-sectional view of the label conveyor of the present invention;

[0028] Figure 6 This is a partial structural schematic diagram of the placement rack of the present invention;

[0029] Figure 7 This is a cross-sectional view of the bottle cap conveying roller of the present invention;

[0030] Figure 8 This is a cross-sectional view of the label supply structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the adhesive coating structure of the present invention;

[0032] In the diagram: 1. Support frame; 2. Bottle cap conveying structure; 21. Shaft seat; 22. Bottle cap conveying roller; 221. Metal support roller; 222. Rubber support roller; 23. Bottle cap conveyor belt; 24. Lifting cylinder; 3. Label conveying structure; 31. Label conveying frame; 311. Negative pressure chamber; 312. Pressurizing chamber; 313. Slot; 32. Label conveyor belt; 33. Label conveying roller; 4. Label supply structure; 41. Label cylinder; 42. Baffle; 43. Roller; 5. Glue application structure; 51. Glue tank; 52. Scraper; 53. Glue application roller; 54. Limiting sleeve; 55. Adjusting screw; 56. Glue application motor; 6. Placement rack; 61. Connecting plate; 62. Slider; 63. Connecting rod; 7. Arc-shaped slide; 71. Fixing hole; 8. Labeling head; 81. Labeling rod; 811. Fixing sleeve; 812. Sliding rod; 813. Insert plate; 82. Adsorption hole. Detailed Implementation Example 1

[0033] like Figure 1-9 As shown, an automatic labeling line for bottle caps includes a bottle cap conveying structure 2 and a label conveying structure 3. The bottle cap conveying structure 2 includes two bottle cap conveyor belts 23 perpendicular to the horizontal plane. The bottle cap conveyor belts 23 are wound around bottle cap conveyor rollers 22. The bottle cap conveyor rollers 22 are rotatably connected to bearing seats 21. One set of bearing seats 21 is slidably connected to a bracket 1. A label conveyor belt 32 is rotatably connected to the bracket 1. A labeling rod 81 is connected to the label conveyor belt 32. A labeling head 8 is fixedly connected to the labeling rod 81. Label supply structures 4 and adhesive application structures 5 are respectively provided at both ends of the label conveyor belt 32. The label conveyor belt 32 is wound around a label conveyor roller 33. One end of the label conveyor roller 33 is rotatably connected to a label supply structure 4. On the label conveyor 31, the label conveyor 31 is slidably connected to the arc-shaped slide 7, and the arc-shaped slide 7 is slidably connected to the bracket 1; the labeling rod 81 includes a fixed sleeve 811 fixed on the label conveyor belt 32, a slide rod 812 slidably connected inside the fixed sleeve 811, the slide rod 812 is hollow inside and the outer end of the slide rod 812 is connected to the labeling head 8, the labeling head 8 is a hollow rubber head with an adsorption hole 82 at the end; the label conveyor 31 is provided with a negative pressure chamber 311 and a pressurizing chamber 312 in the middle, the negative pressure chamber 311 and the pressurizing chamber 312 are alternately connected to the fixed sleeve 811, the fixed sleeve 811 is fixed on the sealing strip, and the sealing strip is slidably connected to the openings on the sides of the negative pressure chamber 311 and the pressurizing chamber 312.

[0034] In the bottle cap processing production line, the labeling line is connected to the conveyor line of the formed bottle caps. The bottle cap conveying structure 2 is aligned with the bottle cap conveyor line. As the bottle cap passes through the bottle cap conveying structure 2, the labeling head 8 in the label conveying structure 3 takes off the label from the label supply structure 4. The label passes through the glue coating structure 5 to coat the outside of the label with glue. After the glue coating is completed, the label moves with the label conveying structure 3 and is affixed to the bottle cap that is conveyed synchronously with the label.

[0035] One set of bearing seats 21 is slidably connected to the support 1. When conveying bottle caps of different diameters, the distance between the two sets of bottle cap conveyor belts 23 can be changed by sliding this set of bearing seats 21, thus conveying bottle caps of different diameters. For the labeling structure, the arc-shaped slide 7 is slidably connected to the support 1. The position of the labeling arc-shaped slide 7 can be changed according to the displacement of the bottle cap conveyor belt 23, so that the labeling head 8 is aligned with the symmetry line of the two sets of bottle cap conveyor belts 23, ensuring the centering of vertical labeling. When labeling irregularly shaped bottle caps, such as those with a spherical top, The labeling head 8, made of rubber, can deform under pressure, allowing it to adhere to the top of the bottle cap for a higher degree of fit. When labeling the side or slanted surface of the bottle cap, the label conveyor 31 slides relative to the arc-shaped slide 7 until the axis of the labeling rod 81 is perpendicular to the labeling surface on the bottle cap. This allows for adjustment of the labeling for bottle caps of different diameters, shapes, and labeling positions. The bottom of the arc-shaped slide 7 has a fixing hole 71, which can be used to fix the arc-shaped slide 7 to the bracket 1 with bolts after the position is adjusted.

[0036] The fixing sleeve 811 of the labeling rod 81 is fixed to the label conveyor belt 32 and communicates with the inside of the label conveyor belt 32. A hollow slide rod 812 is slidably connected inside the fixing sleeve 811. One side of the slide rod 812 is sealed, and the other side is open. An isolation device is provided between the sealed side and the open side. An insert plate 813 is inserted into a slot 313 on the label conveyor frame 31. A negative pressure chamber 311 and a pressurizing chamber 312 are provided inside the label conveyor frame 31. During the labeling process, when the labeling head 8 carrying the label is in the position of the adhesive coating structure 5, the fixing sleeve 811 communicates with the negative pressure chamber 311, and the open side of the slide rod 812 communicates with the negative pressure chamber 311, causing the labeling rod 81 to be in a contracted state, and the inside of the slide rod 812 to be in a negative pressure state. The labeling head 8 can then absorb the label from the label supply structure 4, maintaining this state until the labeling head 8 passes through... When the adhesive coating structure 5 is positioned below the label conveying frame 31, the fixing sleeve 811 is connected to the pressure chamber 312, and the inside of the slide rod 812 is still under negative pressure, ensuring that the label is adsorbed onto the labeling head 8. When the labeling head 8 presses the label coated with adhesive onto the bottle cap, the inside of the slide rod 812 is also connected to the pressure chamber 312, making it easy for the label and the labeling head 8 to separate under pressure. The fixing sleeve 811 then moves to connect with the negative pressure chamber 311, and the slide rod 812 retracts. Before the slide rod 812 moves to the label supply structure 4, its inside is connected to the negative pressure chamber 311 to facilitate the next label adsorption. This completes a single labeling operation. The bottle cap conveying structure 2 and the label conveying structure 3 operate synchronously and continuously, enabling efficient labeling. Adjacent negative pressure chambers 311 and pressure chambers 312 in the label conveying frame 31 are separated by partitions, as shown above. Example 2

[0037] like Figure 1-9 As shown, an automatic labeling line for bottle caps includes a bottle cap conveying structure 2 and a label conveying structure 3. The bottle cap conveying structure 2 includes two bottle cap conveyor belts 23 perpendicular to the horizontal plane. The bottle cap conveyor belts 23 are wound around a bottle cap conveyor roller 22. The bottle cap conveyor roller 22 is rotatably connected to a bearing 21. One set of bearings 21 is slidably connected to a bracket 1. A label conveyor belt 32 is rotatably connected to the bracket 1. A labeling rod 81 is connected to the label conveyor belt 32. A labeling head 8 is fixedly connected to the labeling rod 81. A label supply structure 4 and an adhesive application structure 5 are respectively provided at both ends of the label conveyor belt 32. The bottle cap conveyor roller 22 includes a bottom... The metal support roller 221 has a rubber support roller 222 fixedly connected above it. The rubber support roller 222 is hollow inside. The lower half of the bottle cap conveyor belt 23 is wrapped around the metal support roller 221 and the upper half is wrapped around the rubber support roller 222. The bottle cap conveyor belt 23 has a linear array of concave arc grooves on its outer side. A placement frame 6 fixed on the bracket 1 is set between the two sets of bottle cap conveyor belts 23. The shaft seat 21 is connected to the bracket 1 through the lifting cylinder 24. The placement frame 6 includes connecting plates 61 at both ends. A connecting rod 63 is set between the connecting plates 61 at both ends. The two ends of the connecting rod 63 are slidably connected to the connecting plates 61.

[0038] The bottle cap conveyor roller 22 has a metal lower section to support the bottle cap conveyor belt 23 and ensure its operation at a certain speed. The upper section is a hollow rubber roller to provide elasticity. During bottle cap conveying, the distance between the two sets of bottle cap conveyor belts 23 is slightly smaller than the bottle cap diameter, allowing the conveyor belts 23 to grip the bottle caps with sufficient force. Simultaneously, the sides of the bottle cap conveyor belts 23 are designed with concave arc grooves to stably hold the bottle caps, preventing relative sliding between the bottle caps and the conveyor belts 23 during labeling and thus avoiding label misalignment. A support frame 6 is installed between the two sets of bottle cap conveyor belts 23 to support the bottom of the bottle caps. To ensure a stable distance between the top of the bottle cap and the labeling head 8, preventing the bottle cap from sliding axially due to pressure during labeling, the placement rack 6 uses a connecting plate 61 with a groove. A slider 62 is installed in the groove to fix the connecting rod 63. During the conveying of bottle caps of different diameters, the distance between adjacent sliders 62 is changed to ensure that the connecting rod 63 is evenly distributed on the bottom of the bottle cap. The connecting plate 61 is fixed on the bracket 1 and is flush with the bottle cap conveying line. The shaft seat 21 is connected to the bracket 1 through the lifting cylinder 24. For bottle caps of different lengths, the height of the top of the conveyor belt can be changed to ensure that the labeling position of the bottle cap is above the top of the conveyor belt. Example 3

[0039] like Figure 1-9As shown, an automatic labeling line for bottle caps includes a bottle cap conveying structure 2 and a label conveying structure 3. The bottle cap conveying structure 2 includes two bottle cap conveyor belts 23 perpendicular to the horizontal plane. The bottle cap conveyor belts 23 are wound around bottle cap conveyor rollers 22. The bottle cap conveyor rollers 22 are rotatably connected to bearing seats 21. One set of bearing seats 21 is slidably connected to a bracket 1. A label conveyor belt 32 is rotatably connected to the bracket 1. A labeling rod 81 is connected to the label conveyor belt 32. A labeling head 8 is fixedly connected to the labeling rod 81. Label supply structures 4 are respectively provided at both ends of the label conveyor belt 32. The adhesive coating structure 5 and the label supply structure 4 include a label cylinder 41, a baffle 42 at the bottom of the label cylinder 41, and a roller 43 rotatably connected to the baffle 42; the adhesive coating structure 5 includes an adhesive coating roller 53, a glue trough 51 connected to one side of the adhesive coating roller 53, a scraper fixedly connected to the glue trough 51, and an axially sliding limiting sleeve 54 fitted on the outside of the adhesive coating roller 53; the adhesive coating roller 53 is rotatably connected to the adhesive coating frame, the adhesive coating frame is fixed to the label conveyor frame 31, and an adjusting screw 55 is rotatably connected to the adhesive coating frame, the adjusting screw 55 passing through the limiting sleeve 54 and threadedly connected to the limiting sleeve 54.

[0040] As the label rod moves with the label conveyor belt 32, the label applicator 8 fixed on the label conveyor belt 32 contacts the labels inside the label cylinder 41. The label applicator 8 is under negative pressure, causing a single label to be applied to it. A roller 43 is rotatably connected to the baffle 42, reducing friction between the label and the baffle 42, making it easier to remove the label from the label applicator 8. After the label is removed, the label applicator 8 carries the label to the glue coating structure 5 at the left end. The glue coating structure 5 has a glue tank 51 connected to a glue source to ensure glue supply. A scraper 52, with a small distance from the glue coating roller 53, is fixedly connected inside the glue tank 51 to scrape off excess glue from the glue coating roller 53. The remaining glue ensures the amount of glue applied. When the label passes through the glue application roller 53, it contacts the glue application roller 53 and transfers the glue on the glue application roller 53 to the label. Different sizes of labels are used for bottle caps of different diameters. When applying glue to labels of different diameters, in order to avoid applying glue to the labeling head 8, a limiting sleeve 54 is slidably connected to the glue application roller 53. The adjusting screw 55 has a symmetrical thread at both ends. When the adjusting screw 55 is rotated, the two limiting sleeves 54 move towards or in opposite directions, so that the part of the glue application roller 53 between the two fixed sleeves 811 contacts the label. The glue application roller 53 rotates under the drive of the glue application motor 56.

Claims

1. An automatic labeling line for bottle cap labeling, characterized in that: The system includes a bottle cap conveying structure (2) and a label conveying structure (3). The bottle cap conveying structure (2) includes two bottle cap conveying belts (23) perpendicular to the horizontal plane. The bottle cap conveying belts (23) are wrapped around the bottle cap conveying rollers (22). The bottle cap conveying rollers (22) are rotatably connected to the bearing seats (21). One set of bearing seats (21) is slidably connected to the bracket (1). The label conveying belt (1) is rotatably connected to the label conveying belt (32). The labeling rod (81) is connected to the label conveying belt (32). The labeling head (8) is fixedly connected to the labeling rod (81). The label supply structure (4) and the glue coating structure (5) are respectively provided at both ends of the label conveying belt (32). The bottle cap conveyor belt (23) is provided with a linear array of concave arc grooves on the outside. A placement rack (6) fixed on the support (1) is provided between the two sets of bottle cap conveyor belts (23). The shaft seat (21) is connected to the support (1) through the lifting cylinder (24). The placement rack (6) includes connecting plates (61) at both ends. A sliding groove is provided on the connecting plate (61), and a slider (62) is provided in the sliding groove to fix the connecting rod (63). A connecting rod (63) is provided between the connecting plates (61) at both ends. The two ends of the connecting rod (63) are slidably connected to the connecting plate (61). By changing the distance between adjacent sliders (62), the connecting rod (63) is evenly distributed at the bottom of the bottle cap. The adhesive coating structure (5) includes an adhesive coating roller (53), one side of which is connected to a glue trough (51), a scraper is fixedly connected to the glue trough (51), and an axially sliding limiting sleeve (54) is fitted on the outside of the adhesive coating roller (53). The coating roller (53) is rotatably connected to the coating frame, which is fixed on the label conveyor frame (31). An adjusting screw (55) is rotatably connected to the coating frame. The adjusting screw (55) has symmetrical threads at both ends. The adjusting screw (55) passes through the limiting sleeve (54) and is threadedly connected to the limiting sleeve (54).

2. The automatic labeling line for bottle cap labeling according to claim 1, characterized in that: The label conveyor belt (32) is wrapped around the label conveyor roller (33), one end of the label conveyor roller (33) is rotatably connected to the label conveyor frame (31), the label conveyor frame (31) is slidably connected to the arc-shaped slide (7), and the arc-shaped slide (7) is slidably connected to the bracket (1).

3. The automatic labeling line for bottle cap labeling according to claim 2, characterized in that: The labeling rod (81) includes a fixed sleeve (811) fixed on the label conveyor belt (32), a slide rod (812) is slidably connected inside the fixed sleeve (811), the slide rod (812) is hollow inside and the outer end of the slide rod (812) is connected to the labeling head (8), and the labeling head (8) is a hollow rubber head with an adsorption hole (82) at the end.

4. The automatic labeling line for bottle cap labeling according to claim 3, characterized in that: The label conveyor (31) is provided with a negative pressure chamber (311) and a pressurizing chamber (312) in the middle. The negative pressure chamber (311) and the pressurizing chamber (312) are alternately connected to the fixing sleeve (811). The fixing sleeve (811) is fixed on the sealing strip. The sealing strip is slidably connected to the openings on the sides of the negative pressure chamber (311) and the pressurizing chamber (312).

5. The automatic labeling line for bottle cap labeling according to claim 1, characterized in that: The bottle cap conveying roller (22) includes a metal support roller (221) at the bottom, and a rubber support roller (222) is fixedly connected above the metal support roller (221). The rubber support roller (222) is hollow inside. The lower half of the bottle cap conveyor belt (23) is wrapped around the metal support roller (221), and the upper half is wrapped around the rubber support roller (222).

6. The automatic labeling line for bottle cap labeling according to claim 1, characterized in that: The label supply structure (4) includes a label cylinder (41), a baffle (42) is provided at the bottom of the label cylinder (41), and a roller (43) is rotatably connected to the baffle (42).

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