Round bottle cold glue labeling machine

Abstract

The invention discloses a round bottle cold glue labeling machine which comprises a cabinet provided with a labeling station, and the cabinet is provided with a transfer unit and a labeling unit; the labeling unit comprises an unwinding mechanism, a label feeding mechanism, a label cutting mechanism, a label drum mechanism and a gluing mechanism which are sequentially arranged along a label feeding path; when the unreeling mechanism unreels, a label is sequentially dragged by the label feeding mechanism, slit by the label cutting mechanism, transferred by the label drum mechanism and glued by the gluing mechanism, and then the round bottle which is transferred to the labeling station by the transfer unit along the feeding path is labeled; according to the round bottle labeling machine, the continuous operation process of unwinding, cutting and gluing of the roll-shaped base material can be achieved, the production link is simplified, the round bottle labeling quality is effectively guaranteed, and meanwhile the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of round bottle labeling equipment, in particular to a round bottle cold adhesive labeling machine. BACKGROUND

[0002] In the food and beverage industry such as beer and beverage, the appearance identification of round bottle products is usually realized through a labeling process. Currently, cold adhesive labeling machines are commonly used in the industry to complete the labeling work. In the labeling process of existing cold adhesive labeling machines, the traditional technical scheme of pre-cutting labels and pre-coating adhesive is adopted. First, the continuous roll-shaped label base material is pre-cut into individual independent labels. Then, the adhesive is pre-applied to the bonding surface of the individual labels through a special device. Finally, the pre-coated labels are placed in the label supply mechanism of the labeling machine in batches, and the labeling machine completes the labeling work of the labels and the round bottles.

[0003] Because the labels need to be pre-processed by cutting and coating, additional processes such as pre-cut label storage, transportation, and pre-coated adhesive aging control need to be added to the production process. The pre-coated adhesive labels have strict storage environment requirements and need to be stored in a constant temperature and humidity warehouse to avoid adhesive deterioration. Special transportation tools are also needed to prevent label damage or adhesive contamination. In addition, a dedicated person is needed to monitor the aging to prevent the labels from exceeding the effective period of adhesion, which significantly increases the complexity of production organization and production costs. Moreover, during long-term storage, the adhesive is easily affected by environmental temperature and humidity fluctuations, leading to aging, solidification, or adhesion decay. When using labels that have exceeded the aging period or have deteriorated adhesive for labeling, the labels may not bond firmly to the surface of the round bottles, may easily fall off or curl after being bonded, and may cause other problems, which seriously affect the labeling quality of the round bottles. SUMMARY

[0004] The purpose of the present application is to provide a round bottle cold adhesive labeling machine that can realize continuous operation of roll-shaped base material unwinding, cutting, and coating, simplifying the production chain and effectively ensuring the labeling quality of round bottles while reducing production costs.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A round bottle cold adhesive labeling machine includes a cabinet with a labeling station, a transfer unit, and a labeling unit. The labeling unit includes an unwinding mechanism, a label feeding mechanism, a label cutting mechanism, a label drum mechanism, and a glue coating mechanism arranged along the label feeding path. When the unwinding mechanism unwinds, the labels are sequentially pulled by the label feeding mechanism, cut by the label cutting mechanism, transferred by the label drum mechanism, and coated with glue by the glue coating mechanism. The transfer unit moves along the feeding path to the labeling station to label the round bottles.

[0007] Based on the above technical solutions, the present application can be improved as follows:

[0008] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0009] Further, the cutter drum is provided with a cutter slot on the outer peripheral wall in the axial direction, the cutter slot is used for installing the moving cutter, and the cutter tip of the installed moving cutter protrudes from the outer peripheral surface of the cutter drum by a preset height.

[0010] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0011] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0012] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0013] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0014] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0015] Further, the cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum, and a fixed cutter matched with the moving cutter; when the cutter drum driving element is driven, the cutter drum rotates to drive the moving cutter to periodically shear with the fixed cutter to complete label cutting.

[0016] Furthermore, the transfer unit includes an electric turntable, a bottle holder mounted on the electric turntable, a top frame mounted above the electric turntable, and a liftable capping assembly mounted on the top frame; when the electric turntable rotates, it drives the bottle holder to rotate on its own axis and revolve around the central axis, and the capping assembly on the top frame moves in conjunction with the bottle holder to fix the round bottle.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] This invention directly carries a continuous roll of label substrate through an unwinding mechanism, and through a label feeding mechanism, a label cutting mechanism cuts the substrate into individual labels according to a preset label size. A gluing mechanism then applies adhesive to the cut labels, achieving a continuous operation process for unwinding, cutting, and gluing the roll of substrate. This not only eliminates the extra steps of pre-cut label storage and pre-adhesive time management found in existing technologies, simplifying the production chain, but also eliminates the need to replace pre-cut label inventory, avoiding the problems of adhesive aging and decreased adhesion caused by long-term storage of pre-adhesive labels. This effectively ensures the labeling quality of round bottles while reducing production costs. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the round bottle cold glue labeling machine in the embodiment;

[0021] Figure 2 for Figure 1 Enlarged view of section A in the image;

[0022] Figure 3 This is a top view of the round bottle cold glue labeling machine in the embodiment;

[0023] Figure 4 for Figure 3 Enlarged view of section B in the image;

[0024] Figure 5 This is a schematic diagram of the labeling unit in the embodiment;

[0025] Figure 6 This is a schematic diagram of the unwinding mechanism in the embodiment;

[0026] Figure 7 This is a schematic diagram of the label feeding mechanism in the embodiment;

[0027] Figure 8 This is a schematic diagram of the label-cutting mechanism in the embodiment;

[0028] Figure 9 This is a schematic diagram of the drum mechanism in the embodiment;

[0029] Figure 10 for Figure 5A magnified view of section C in the image.

[0030] The markings on the attached diagram are as follows: 1. Cabinet; 2. Electrical control cabinet; 3. First conveyor line; 4. Electric spiral bottle separating rod; 5. Second conveyor line; 6. Inlet star wheel; 7. Outlet star wheel; 8. Guide plate; 801. First arc guide groove; 802. Second arc guide groove; 9. Electric turntable; 10. Bottle holder; 11. Capping assembly; 12. Support; 13. Reel; 14. Label drive motor; 15. Tension roller; 16. Support frame; 17. Label feeding roller; 18. Pressure roller; 19. Guide roller; 20. Label feeding drive motor; 21. Knife drum; 22. Moving cutter; 23. Fixed cutter; 24. Label drum body; 25. Label drum shaft; 26. Glue loading box; 27. Glue applicator; 28. Glue applicator roller; 29. ​​Glue scraper. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. These descriptions are intended to aid in understanding the present invention but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] See Figures 1 to 10 This embodiment relates to a round bottle cold adhesive labeling machine, including a cabinet 1, a bottle inlet unit, a labeling unit, a bottle outlet unit arranged sequentially along the conveying path on the cabinet 1, and a transfer unit for transferring the round bottle along the conveying path; the cabinet 1 has an upper bottle end and a bottle outlet end; the transfer unit has a transfer-in side and a transfer-out side; during labeling, the round bottle is fed into the cabinet 1 from the upper bottle end of the cabinet 1 through the bottle inlet unit, and is transferred from the transfer-in side to the transfer-out side along the conveying path through the transfer unit. After the labeling unit completes the labeling, the bottle is moved out of the cabinet 1 from the bottle outlet end of the cabinet 1 through the bottle outlet unit.

[0033] The cabinet 1 is equipped with a control unit, which is used to control the bottle feeding unit to send the round bottles to be labeled into the cabinet 1, control the labeling unit to label the round bottles, control the bottle discharging unit to remove the labeled round bottles out of the cabinet 1, and control the transfer unit to transfer the round bottles along the conveying path; the control unit is the electrical control cabinet 2 in the prior art.

[0034] Specifically, cabinet 1 has a rectangular cabinet structure. Cabinet 1 has openings on its perimeter. One opening along the length of cabinet 1 is the bottle inlet, and the other opening along the length of cabinet 1 is the bottle outlet. The interior of cabinet 1 forms a labeling chamber, which houses the transfer unit and the labeling unit. The bottle inlet unit connects to the bottle inlet of cabinet 1 and extends to the inlet side of the transfer unit, while the bottle outlet unit connects to the bottle outlet of cabinet 1 and extends to the outlet side of the transfer unit. It should be noted that, depending on the actual situation, the positions of the bottle inlet and bottle outlet of cabinet 1 can be adjusted accordingly. They are not limited to being located on both sides along the length of cabinet 1, but can also be located on both sides along the width of cabinet 1.

[0035] The bottle feeding unit includes a first conveyor line 3 and a bottle separating component disposed on one side of the first conveyor line 3. In this embodiment, the first conveyor line 3 is a chain plate type conveyor line in the prior art. The first conveyor line 3 forms a bottle feeding path parallel to the length direction of the cabinet 1. Depending on the actual situation, other existing conveyor lines suitable for feeding round bottles into the cabinet 1 can also be used, such as roller conveyor lines or belt conveyor lines. In this embodiment, the bottle separating component is an electric spiral bottle separating rod 4 in the prior art. The electric spiral bottle separating rod 4 is rotatably connected to one side of the first conveyor line 3. The rotation axis of the electric spiral bottle separating rod 4 is parallel to the bottle feeding path. The bottle separating side portion of the electric spiral bottle separating rod 4 enters the first conveyor line 3. The electric spiral bottle separating rod 4 has a spiral groove. The groove width is adapted to the outer diameter of the round bottle. The groove width is slightly larger than the outer diameter of the round bottle to ensure that the round bottle can be embedded in the groove without excessive shaking. The axial distance (i.e., spiral lead) between two adjacent spiral grooves is a preset round bottle separation distance. The rotation speed of the electric spiral bottle separating rod 4 matches the bottle feeding speed of the first conveyor line 3.

[0036] As the round bottles move along the first conveyor line 3 to the electric spiral bottle separating rod 4, they are inserted one by one into the groove of the spiral groove. At this time, the first conveyor line 3 provides a forward conveying force to the round bottles along the bottle feeding path, and the spiral groove sidewall on the electric spiral bottle separating rod 4 provides a guiding force to the round bottles along the rotational tangent direction. Under the combined action of the conveying force and the guiding force, the round bottles move along the trajectory of the spiral groove, and with the spiral lead as a fixed interval, they are sequentially separated from the spiral groove from the output end of the electric spiral bottle separating rod 4. When the previous round bottle is separated from a certain spiral groove, the next round bottle is inserted into the adjacent next spiral groove. With the continuous rotation of the electric spiral bottle separating rod 4 and the continuous feeding of bottles by the first conveyor line 3, the round bottles are continuously and equally separated, so as to facilitate the subsequent transfer of round bottles for labeling.

[0037] The bottle dispensing unit is the second conveyor line 5. In this embodiment, the second conveyor line 5 has the same structure as the first conveyor line 3, which is also a chain plate type conveyor line in the prior art. The second conveyor line 5 forms a bottle dispensing path parallel to the length direction of the cabinet 1, and the second conveyor line 5 and the first conveyor line 3 are on the same straight line. Depending on the actual situation, other existing conveyor lines suitable for feeding round bottles into the cabinet 1 can also be used, such as roller conveyor lines and belt conveyor lines. Since the round bottles need to be quickly removed from the cabinet 1 after labeling to facilitate subsequent processes, there is no need to set up bottle separators to separate the round bottles so that the round bottles can be quickly removed along the bottle dispensing path.

[0038] In this embodiment, the first transmission line 3 and the second transmission line 5 are arranged symmetrically along the length of the cabinet 1. Specifically, the end of the first transmission line 3 extends inside the cabinet 1 to the receiving side of the transfer unit, and the beginning of the first transmission line 3 extends outside the cabinet 1; the beginning of the second transmission line 5 extends inside the cabinet 1 to the exiting side of the transfer unit, and the end of the second transmission line 5 extends outside the cabinet 1; a first connection position is formed between the end of the first transmission line 3 and the receiving side of the transfer unit, and a second connection position is formed between the exiting side of the transfer unit and the beginning of the second transmission line 5.

[0039] To ensure the smooth turning of the round bottle at the two connection points, this embodiment provides an inlet star wheel 6 at the first connection point and an outlet star wheel 7 at the second connection point, with a guide plate 8 fixed between the inlet star wheel 6 and the outlet star wheel 7. One side of the guide plate 8 has a first arcuate guide groove 801 adapted to the inlet star wheel 6, and the other side of the guide plate 8 has a second arcuate guide groove 802 adapted to the outlet star wheel 7. The curvature radius and central angle of the two arcuate guide grooves are preset and calibrated according to the bottle's turning requirements and the star wheel parameters. Both the inlet star wheel 6 and the outlet star wheel 7 have teeth.

[0040] When the round bottles to be labeled are conveyed to the first connection position by the first conveyor line 3, the guide star wheel 6 rotates at a constant speed under the drive of the motor. Its teeth are embedded in the gap between the round bottles and form a circumferential drive. At the same time, the outer wall of the round bottle slides against the groove wall of the first arc guide groove 801. Under the combined action of the driving force of the wheel teeth and the guiding constraint force of the first arc guide groove 801, the round bottle smoothly completes the direction change along the preset trajectory of the first arc guide groove 801, and finally accurately enters the transfer unit from the first conveyor line 3 to the transfer unit, ensuring the consistency of the posture of the round bottle when entering the transfer unit.

[0041] When the labeled round bottle is output from the transfer unit to the second connection position, the guide star wheel 7 rotates synchronously and uniformly, and its teeth form a driving engagement with the round bottle. The outer wall of the round bottle slides along the second arc guide groove 802 and completes a secondary direction conversion. Finally, it is smoothly transferred to the starting end of the second conveyor line 5, realizing a seamless connection between the labeled round bottle and the bottle output unit.

[0042] This embodiment utilizes the combined driving action of the two star wheel teeth and the guiding constraint of the circular arc guide groove to not only prevent the bottle from shifting its posture during the turning process, but also ensures the continuity of the transfer process through a gapless fit, avoiding bottle jamming or speed fluctuations at the connection point, and effectively improving the overall operational stability of the equipment.

[0043] The transfer unit includes an electric turntable 9, bottle holders 10 evenly distributed on the surface of the electric turntable 9, a top frame fixed above the electric turntable 9, and a liftable capping assembly 11 mounted on the top frame. The electric turntable 9 adopts the existing electric turntable structure, consisting of a circular disc and a servo motor that drives it to rotate at a constant speed. After the electric turntable 9 is started, the circular disc drives the bottle holders 10 on the surface to form a closed-loop circular conveying path. The labeling unit is fixedly arranged at a preset station corresponding to the conveying path to ensure that the round bottles can accurately pass through the labeling area during the transfer process. The two sides of the electric turntable 9 away from the labeling unit are defined as the inlet side for connecting to the first conveyor line 3 and the outlet side for connecting to the second conveyor line 5, respectively.

[0044] Multiple bottle holders 10 are evenly spaced along the circumference of the electric turntable 9, and their number corresponds one-to-one with the number of capping assemblies 11. The top contour of the bottle holder 10 is adapted to the bottom shape of the round bottle to achieve stable support of the round bottle. The capping assembly 11 consists of a lifting drive mechanism (such as a cylinder or electric push rod) and a capping body. The bottom of the capping body is provided with a flexible buffer layer (such as a rubber pad) to avoid damage to the round bottle when it is pressed.

[0045] After the round bottle to be labeled is transferred to the bottle holder 10 on the rotating side of the electric turntable 9 via the guide star wheel 6, the capping body descends synchronously under the drive of the lifting mechanism, and the capping body presses the top of the round bottle to achieve axial fixation of the round bottle on the bottle holder 10. Then, the electric turntable 9 drives the bottle holder 10 and the round bottle to move at a constant speed along the circular conveying path, and the capping body rotates synchronously with the round bottle to ensure that the pressing state is continuously stable. Each bottle holder 10 is equipped with an independent self-rotation drive motor on the table surface of the electric turntable 9. The motor is connected to the bottle holder 10 and can drive the bottle holder 10 to drive the round bottle to rotate at a constant speed around its own axis. When the round bottle moves with the electric turntable 9 to the work position corresponding to the labeling unit, the rotation of the round bottle enables the labeling unit to affix the label to the outer peripheral wall of the round bottle, thereby completing the labeling process.

[0046] In this embodiment, the transfer unit combines revolution and rotation, which not only enables continuous transfer of round bottles between units, but also ensures the stability of the labeling process and the labeling accuracy through the axial fixation of the capping assembly 11 and the coordination of rotation drive. At the same time, the bottle holders 10 structure arranged at equal intervals can match the cycle time requirements of the production line and improve the overall labeling efficiency.

[0047] The labeling unit includes an unwinding mechanism, a tensioning mechanism, a label feeding mechanism, a label cutting mechanism, a label drum mechanism, and an adhesive applicator, arranged sequentially along the label feeding path. During label feeding, the unwinding mechanism unwinds the label, and after the label is tensioned by the tensioning mechanism, it is pulled by the label feeding mechanism to the label cutting mechanism for cutting. The cut label is then attracted and transferred by the label drum mechanism to the adhesive applicator for adhesive application. After adhesive application, the label continues to be transferred by the label drum mechanism to the labeling station to complete the labeling process.

[0048] The unwinding mechanism is used to carry the roll of label substrate and to unwind it at a uniform speed during label feeding, so as to transport the roll of label substrate to the subsequent mechanism along a preset label feeding path. Specifically, the unwinding mechanism includes a support 12, a rotatable reel 13 mounted on the support 12, and a label drive motor 14 that drives the reel 13 to rotate. The support 12 includes a vertical rod with a base support at the bottom and a crossbeam at the top of a connecting rod. The reel 13 is rotatably mounted on the crossbeam via a rotating shaft, and both ends of the rotating shaft are connected to the crossbeam via bearings. The inner diameter of the reel 13 is adapted to the roll of label substrate. The mandrel dimensions; the label drive motor 14 is a servo motor, which is fixedly installed on one side of the crossbeam by bolts. The output shaft of the label drive motor 14 is connected to the rotating shaft of the reel 13. When feeding labels, the label drive motor 14 outputs a constant speed according to the preset label feeding speed, which drives the reel 13 to rotate at a uniform speed and smoothly unwind the roll of label substrate. At the same time, combined with the tension feedback of the subsequent tensioning mechanism, the label drive motor 14 can dynamically fine-tune the speed to ensure that the unwinding tension is always within the preset range, avoiding problems such as loosening, stretching deformation or breakage of the label substrate.

[0049] The tensioning mechanism is connected between the unwinding mechanism and the label cutting mechanism. The tensioning mechanism includes multiple rotatable tensioning rollers 15, which are arranged in an alternating manner along the label feeding path on the label output side of the unwinding mechanism. After the label substrate is unwound from the unwinding mechanism, it passes around the outer peripheral wall of each tensioning roller 15 in sequence, thereby tensioning the label substrate in an "S" shape or zigzag shape, and then conveying it to the label cutting mechanism along the preset label feeding path after tensioning.

[0050] The tension roller 15 is made of a smooth and wear-resistant material (such as hard aluminum alloy or chrome-plated steel). The tension roller 15 is rotatably installed in the cabinet 1 through the support plate to ensure smooth and unobstructed winding of the label substrate and avoid scratching the label surface. At the same time, the staggered arrangement of the tension rollers 15 can effectively increase the contact area between the label substrate and the roller surface. The substrate's own tensile deformation and the friction of the roller surface form a stable tension. The gravity tension generated by the height difference between adjacent tension rollers 15 further eliminates defects such as wrinkles and looseness of the label substrate during unwinding, ensuring that the label substrate entering the label cutting mechanism is in a flat, taut and stable state.

[0051] The label feeding mechanism connects the unwinding mechanism and the label cutting mechanism. The label feeding mechanism includes a support frame 16, a label feeding roller 17, a pressure roller 18, and a guide roller 19 rotatably mounted on the support frame 16, and a label feeding drive motor 20 that is driven by the label feeding roller 17. The bottom end of the label feeding roller 17 passes through the bottom of the support frame 16 and extends to the outside to be driven by the output shaft of the label feeding drive motor 20. The label feeding roller 17 and the pressure roller 18 are arranged in a front-to-back arrangement, forming a label feeding gap that is adapted to the thickness of the label substrate. The guide roller 19 is used to change the conveying direction of the label.

[0052] During traction, the roll of label substrate is unwound by the unwinding mechanism and introduced into the label feeding gap between the label feeding roller 17 and the pressure roller 18. The pressure roller 18 and the label feeding roller 17 together press the label substrate together and generate friction. The label feeding drive motor 20 starts and drives the label feeding roller 17 to rotate at a constant speed. The friction between the roller surface and the label substrate pulls the label substrate forward. During the traction process, the label substrate changes its conveying direction by the guidance of the guide roller 19 and is finally pulled to the label cutting mechanism for cutting, effectively avoiding slippage and deviation of the label substrate during the conveying process. It should be noted that the label feeding drive motor is used as the label feeding drive component in this embodiment. Depending on the actual needs, other label feeding drive components suitable for driving the label feeding roller 17 to rotate around the wire can also be used instead.

[0053] The label cutting mechanism connects the tensioning mechanism and the label drum mechanism. The label cutting mechanism includes a rotatable blade drum 21, a blade drum drive motor (not shown in the figure) that drives the blade drum 21 to rotate, a movable cutter 22 fixed on the blade drum 21, and a fixed cutter 23 adapted to the movable cutter 22. The blade drum 21 is made of high-strength wear-resistant material (such as alloy steel or hard aluminum alloy). The blade drum 21 has an integrally formed sealed negative pressure chamber. The blade drum 21 has several suction holes that connect to the negative pressure chamber evenly opened on its outer peripheral wall. The suction holes are distributed in a matrix to ensure that the adsorption force evenly covers the label substrate bonding area. The blade drum 21 is connected to an external negative pressure device through a sealed pipe. In this embodiment, the negative pressure device is a vacuum pump. When working, the negative pressure device is activated to form a stable negative pressure in the negative pressure chamber. Adsorption force is generated through the suction holes to achieve tight adsorption and positioning of the label substrate.

[0054] The blade drum 21 has a blade mounting groove on its outer peripheral wall along the axial direction, which is adapted to the moving cutter 22. The depth and width of the blade mounting groove are preset according to the thickness and cutting edge angle of the moving cutter 22 to facilitate the assembly of the moving cutter 22. The moving cutter 22 is made of high-hardness tool steel and is detachably fixed in the blade mounting groove by high-strength bolts. The blade tip of the moving cutter 22 extends beyond the outer peripheral surface of the blade drum 21 by a preset height.

[0055] The blade of the fixed cutter 23 is arranged at a preset shearing angle with the outer peripheral surface of the blade drum 21. The shearing angle is 3°~8° to reduce shearing resistance and avoid tearing of the label edge. The blade of the fixed cutter 23 and the tip of the moving cutter 22 are aligned on the rotation trajectory to form a gapless shearing fit. It should be noted that the specific number of moving cutters 22 in this embodiment can be increased or decreased according to the actual slitting needs.

[0056] During label cutting, when the label substrate, after being tensioned by the tensioning mechanism, is conveyed to the outer circumference of the blade drum 21, the suction force generated by the negative pressure device tightly adheres the label substrate to the surface of the blade drum 21 through the air intake, ensuring that the label substrate does not shift or wrinkle during the cutting process. The blade drum drive motor drives the blade drum 21 to rotate at a uniform speed, and the rotation speed is pre-calibrated and matched with the label feeding speed of the label substrate to ensure that the cutting length meets the preset specifications. When the blade drum 21 drives the moving cutter 22 to rotate until it contacts the fixed cutter 23, the moving cutter 22 and the fixed cutter 23 form a shearing action, accurately cutting the continuous label substrate adsorbed on the surface of the blade drum 21 into individual labels. After the cutting is completed, the blade drum 21 continues to rotate, and the individual labels adsorbed on the outer circumference of the blade drum 21 rotate with the blade drum 21 to the label output side, and are transferred through the label drum mechanism. It should be noted that in this embodiment, the blade drum drive motor is used as the blade drum drive component. Depending on the actual needs, other blade drum drive components suitable for driving the blade drum 21 to rotate around the wire can also be used instead.

[0057] The label drum mechanism connects the label cutting mechanism and the glue application mechanism. The label drum mechanism includes a label drum body 24, a label drum shaft 25 coaxially connected to the label drum body 24, and a label drum drive motor (not shown in the figure) that is driven by the label drum shaft 25. The label drum body 24 is made of high-strength, wear-resistant material. The label drum body 24 has a sealed negative pressure chamber inside, and its outer peripheral wall is precision polished. Multiple suction holes communicating with the negative pressure chamber are evenly distributed along the circumference. The diameter of the suction holes is preset according to the label material and weight, and they are arranged in a matrix or spiral pattern. The label is evenly distributed to ensure that the adsorption force covers the label application area. The label drum body 24 is connected to an external negative pressure device through a sealed pipe. In this embodiment, the negative pressure device is a vacuum pump. One end of the label drum shaft 25 is fixed coaxially with the label drum body 24, and the other end of the label drum shaft 25 is rotatably mounted in the cabinet 1. It should be noted that in this embodiment, a label drum drive motor is used as the label drum drive component. Depending on actual needs, other label drum drive components that are suitable for driving and connecting the label drum shaft 25 to rotate around a wire can also be used instead.

[0058] When a single label cut by the label cutting mechanism is conveyed to the outer circumference of the label drum body 24 via the label feeding path, the external negative pressure device is activated, creating a stable negative pressure in the negative pressure chamber inside the label drum body 24. This generates a uniform adsorption force through the suction hole, tightly adsorbing the label onto the surface of the label drum body 24, preventing the label from shifting, falling off, or wrinkling during the transfer process. Subsequently, the label drum drive motor is activated, driving the label drum shaft 25 to rotate the label drum body 24 at a uniform speed, thereby directionally transferring the adsorbed and fixed label along a circumferential trajectory to the gluing station. When the label rotates to the preset position corresponding to the gluing mechanism, the label drum body 24 maintains a uniform rotation state, cooperating with the gluing mechanism to complete the gluing operation on the label bonding surface.

[0059] The glue application mechanism includes a glue tank 26, a glue application frame 27 fixedly mounted on the top of the glue tank 26, a glue application roller 28 rotatably mounted on the glue application frame 27, a glue application motor (not shown in the figure) that drives the glue application roller 28 to rotate, a scraper 29 adapted to the glue application roller 28, and a glue spray head (not shown in the figure) that supplies glue to the glue application roller 28. The glue tank 26 is made of corrosion-resistant material, such as stainless steel or engineering plastic. The glue tank 26 is equipped with a liquid supply pump (not shown in the figure). The input end of the liquid supply pump extends to the glue storage area at the bottom of the glue tank 26, and the output end is fixedly connected to the glue spray head through a sealed delivery pipe.

[0060] The glue applicator 27 adopts a high-strength frame structure, including a base plate, a top plate, and a vertical plate connecting the base plate and the top plate; the glue applicator 27 has an internal cavity that can accommodate the glue applicator roller 28; the glue applicator motor is fixedly installed on the outside of the glue applicator 27, and the output shaft of the glue applicator motor is connected to one end of the glue applicator roller 28 for transmission.

[0061] The scraper blade 29 is made of wear-resistant alloy material and is mounted on one side of the coating roller 28 via an adjustment frame. The scraping end of the scraper blade 29 is in close contact with the outer circumferential surface of the coating roller 28 at a preset angle, and the contact gap can be adjusted by the adjustment frame to control the thickness of the adhesive layer. The spray nozzle is located on one side of the coating roller 28, and the spraying range of the spray nozzle is adapted to the axial length of the coating roller 28. The spray nozzle adopts an atomization design to ensure that the adhesive is evenly sprayed on the surface of the coating roller 28.

[0062] During the glue application process, the liquid supply pump in the glue tank 26 starts according to the preset glue application amount, draws glue from the tank and delivers it to the spray head through the conveying pipe; the spray head sprays the glue evenly onto the outer circumferential surface of the glue application roller 28; at the same time, the glue application motor drives the glue application roller 28 to rotate at a constant speed around its own axis. During the rotation, the close contact between the scraper 29 and the outer circumferential surface of the glue application roller 28 forms a scraping action, smoothing the glue sprayed on the roller surface and forming a continuous glue layer with uniform thickness and no air bubbles; when the label rotates through the label drum body 24 to the glue application station, the bonding surface of the label comes into contact with the glue layer on the outer circumferential surface of the glue application roller 28. With the synchronous rotation of the glue application roller 28 and the label drum body 24, the glue layer is evenly transferred to the bonding surface of the label, completing the glue application operation.

[0063] The base plate of the glue applicator 27 has an integrally formed return channel. The return channel adopts an inclined glue guiding structure. The input end of the return channel corresponds to the area below the scraper 29, and the output end of the return channel is connected to the opening of the glue box 26. When the scraper 29 scrapes off the excess glue from the outer circumference of the glue applicator 28, the fallen glue will flow naturally along the glue guiding slope of the return channel and eventually flow back into the glue box 26 for recycling. This not only recovers excess glue and reduces the consumption of adhesive materials, but also prevents glue from dripping into the equipment or working environment, keeping the glue applicator clean, reducing the workload of subsequent equipment cleaning and maintenance, and further improving the economy and environmental protection of the glue applicator process.

[0064] In this embodiment, the scraping end of the scraper plate 29 is provided with multiple scraper heads, which are evenly spaced along the length of the scraper plate 29. The cutting edge of each scraper head is in contact with the outer peripheral surface of the coating roller 28. When the coating roller 28 rotates, the scraper head can form strip-shaped scraping marks evenly distributed along the axial direction on the outer peripheral surface of the coating roller 28, so that the adhesive layer on the surface of the coating roller 28 has an intermittent strip-shaped distribution. The strip-shaped adhesive layer can increase the contact pressure between the adhesive and the label bonding surface, thereby reducing the coverage area of ​​the adhesive on the surface of the coating roller 28 while ensuring the strong adhesion between the label and the outer peripheral wall of the round bottle. This avoids the waste of adhesive caused by continuous full coating, significantly reduces the amount of adhesive used, and improves the economy of the coating process. At the same time, the intermittent adhesive layer structure can also reduce the risk of adhesive overflow after the label is bonded, further ensuring the cleanliness of the label appearance.

[0065] After the adhesive is applied, the label continues to rotate with the label drum mechanism to the labeling station. At this time, the round bottle at the labeling station is rotating at a constant speed with the bottle holder 10 of the transfer unit and moving along the revolution path. The rotation speed of the label drum mechanism matches the rotation speed and revolution speed of the round bottle. When the label comes into contact with the outer peripheral wall of the round bottle, the label drum mechanism releases the negative pressure and uses the rotation of the round bottle to tightly adhere the label to the surface of the round bottle, thereby completing the round bottle labeling process.

[0066] This embodiment uses an unwinding mechanism to directly carry a continuous roll of label substrate. After pre-tensioning and label feeding, the label cutting mechanism cuts the substrate into individual labels according to a preset size. The adhesive coating mechanism then applies adhesive to the cut labels, achieving a continuous operation process for unwinding, cutting, and applying adhesive to the roll substrate. This not only eliminates the extra steps of pre-cut label storage and pre-adhesive time management in existing technologies, simplifying the production chain, but also allows for flexible switching between different label sizes by adjusting the cutting parameters. This eliminates the need to replace pre-cut label inventory, avoiding the problems of adhesive aging and decreased adhesion caused by long-term storage of pre-adhesive labels, ensuring the bonding strength of the labels after bonding, and reducing losses and management costs during label pre-processing.

[0067] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A round bottle cold glue labelling machine, characterized in that, The application relates to a labeling machine comprising a cabinet provided with a labeling station, a transfer unit and a labeling unit; the labeling unit comprises a unwinding mechanism, a label feeding mechanism, a label cutting mechanism, a label drum mechanism and a glue applying mechanism arranged along a label feeding path in sequence; when the unwinding mechanism unwinds, the labels are sequentially pulled by the label feeding mechanism, cut by the label cutting mechanism, transferred by the label drum mechanism and glued by the glue applying mechanism, and then the labels are labeled on the circular bottles along a feeding path of the transfer unit and moved to the labeling station.

2. The cold glue round bottle labeling machine according to claim 1, characterized in that, The label cutting mechanism comprises a cutter drum capable of adsorbing labels, a cutter drum driving element drivingly connected to the cutter drum, a moving cutter fixed on the cutter drum and a fixed cutter matched with the moving cutter; when the cutter drum driving element drives, the cutter drum rotates to drive the moving cutter and the fixed cutter to periodically shear to cut the labels.

3. The cold glue labeller for round bottles according to claim 2, characterized in that The cutter drum is provided with a cutter groove on the outer circumferential wall in the axial direction, the cutter groove is used for mounting the moving cutter, and the cutter tip of the mounted moving cutter exceeds the outer circumferential surface of the cutter drum by a preset height.

4. The cold glue labeller for round bottles according to claim 3, characterized in that The blade of the fixed cutter is arranged at a preset shearing angle with the outer circumferential surface of the cutter drum, the shearing angle is 3-8 degrees, the blade of the fixed cutter and the cutter tip of the moving cutter are connected on a rotating track to form a gapless shearing cooperation.

5. The cold glue labeller for round bottles according to claim 4, characterized in that The label drum mechanism comprises a label drum main body provided with a negative pressure chamber inside, a label drum shaft coaxially connected to the label drum main body and a label drum driving element drivingly connected to the label drum shaft; the label drum main body is provided with a plurality of air suction holes communicating with the negative pressure chamber along the circumferential direction, and the label drum main body is connected to an external negative pressure device through a sealing pipeline.

6. The cold glue round bottle labelling machine according to claim 5, characterized in that, The label feeding mechanism comprises a supporting frame, a label feeding roller rotatably arranged on the supporting frame, a pressing roller and a guide roller and a label feeding driving element drivingly connected to the label feeding roller; a label feeding gap is formed between the label feeding roller and the pressing roller; the label base material passes through the label feeding gap and is clamped on the roller surface by the label feeding roller and the pressing roller, and is sent into the label cutting mechanism for cutting under the action of the traction force generated by the rotation of the label feeding roller.

7. The cold glue round bottle labelling machine according to claim 6, characterized in that, The glue applying mechanism comprises a glue loading box, and a glue applying frame is arranged on the top of the glue loading box; a glue applying roller is rotatably arranged on the glue applying frame, a glue applying motor drivingly connected to the glue applying roller, a glue scraping plate matched with the glue applying roller and a glue spraying head supplying glue to the glue applying roller; a liquid supply pump is arranged in the glue loading box and connected to the glue spraying head.

8. The cold glue round bottle labelling machine according to claim 7, characterized in that, The glue scraping end of the glue scraping plate is provided with a plurality of scraping heads, and the scraping heads are arranged at equal intervals along the length direction of the glue scraping plate; the cutting edges of the scraping heads are matched with the outer circumferential surface of the glue applying roller.

9. The cold glue round bottle labelling machine according to claim 8, characterized in that, The labeling unit further comprises a tensioning mechanism arranged between the unwinding mechanism and the label cutting mechanism; the tensioning mechanism comprises a plurality of rotatable tensioning rollers, and the tensioning rollers are arranged at the label output end of the unwinding mechanism along the label feeding path in a staggered manner to tortuously tension the label base material.

10. The cold glue labelling machine for round bottles according to any one of claims 1-9, characterized in that, The transfer unit comprises an electric rotating table, a bottle holder arranged on the electric rotating table, a top frame arranged above the electric rotating table and a pressure cover assembly arranged on the top frame and capable of lifting; when the electric rotating table rotates, the bottle holder rotates around its own axis and revolves around the center of the electric rotating table, and the pressure cover assembly on the top frame moves with the bottle holder to fix the circular bottles.

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