An automatic gluing machine for labeling a carton

Abstract

The utility model belongs to automatic packaging equipment technical field, a kind of automatic gluing machine for packaging box labelling includes rack, the upper end surface of rack is fixedly arranged with glue dispensing frame, two glue dispensing guns are slidably arranged in glue dispensing frame by connecting structure, transmission is arranged in the inside of rack with conveyor belt, the surface of conveyor belt is embedded with feeding plate, two tightening sliding blocks are slidably arranged between two tightening sliding blocks, the side of tightening sliding block close to packaging box is fixedly provided with first spring, the scale plate is slidably arranged between first spring and tightening sliding block, air guide curved surface is arranged on the side of feeding plate, drying rack is fixedly arranged on the upper end surface of rack, drying groove is fixedly arranged in drying rack, the utility model is provided with structure setting, such as tightening sliding block, first spring, scale plate, air guide curved surface, solve the problem that the clamping mechanism of feeding in prior art can be clamped into deformation Packaging box, on the basis of not blowing off labelling, drying structure is set to dry glue after glue dispensing labelling.

Description

Technical Field

[0001] This utility model belongs to the field of automated packaging equipment technology, and in particular relates to an automatic glue applicator for labeling packaging boxes. Background Technology

[0002] Labeling and gluing machines are indispensable post-packaging equipment in modern industrial production. They are widely used in the food, beverage, pharmaceutical, cosmetic, and chemical industries to affix paper, plastic, or metal film labels to various containers (such as bottles, cans, and tubes), boxes, and other products. Their core function is to apply a fixed amount of glue evenly and accurately to specific positions on the label or product and achieve precise adhesion.

[0003] Patent application CN201521006178.3 discloses an automatic glue-applying robot, comprising a cabinet, a glue-applying mechanism, and a conveying mechanism. The cabinet includes a lower cabinet, an upper cabinet, and a front cabinet. The lower cabinet houses a power mechanism. The front cabinet is connected to the upper cabinet and positioned directly above the conveying mechanism. The glue-applying mechanism includes a first Z-axis, a second X-axis, a third Y-axis, and a glue-dispensing module. The first Z-axis is symmetrically fixed to the lower end of the second X-axis, and the third Y-axis is fixed to the second X-axis. A glue-dispensing module is fixed on one side, and a Y-cantilever reinforcement plate is provided on the other side. The conveying mechanism includes a support frame, guide rails, and a receiving tray. The guide rails are laid on the upper end of the support frame, and the receiving trays are fixed at regular intervals on the guide rails. This utility model of an automatic glue-applying machine, by introducing an automated conveying mechanism and a glue-applying mechanism, achieves continuous automated operation of the glue-applying process. It features accurate positioning, high glue-applying precision, good consistency, reduces the impact of human factors on product quality, and ensures the quality of glue application.

[0004] Existing technologies have achieved automated operation of the glue application process by introducing automated conveying mechanisms, which can accurately position the glue. However, there are still many shortcomings in its overall use.

[0005] First, existing devices typically lack clamping mechanisms during automated conveying, which can lead to problems such as box skewing and inaccurate positioning during transport. While some devices may have simple box clamping mechanisms, the clamping mechanisms can easily damage the boxes during the clamping process because some boxes can only withstand relatively low loads, thus affecting the quality of the finished product.

[0006] Secondly, after the adhesive is applied and labeled on the packaging box, the adhesive needs to dry naturally for a long time, which affects the processing efficiency. Therefore, a blower is often used to assist in drying. However, when the blower is used for drying, it may blow off the labels that are not yet fixed because the adhesive is not dry, resulting in labeling failure and requiring rework to relabel, which reduces the efficiency of labeling. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, this utility model provides an automatic glue applicator for labeling packaging boxes. This application utilizes a structure including a tightening slider, a first spring, a scale plate, and a curved air-guiding surface to enable the device to clamp and fix the packaging box during loading, while simultaneously making the clamping force visible. This solves the problem of packaging boxes being easily damaged due to excessive clamping force. After glue application and labeling, the hot air blown by the drying structure is directed upwards towards the labeling position, preventing the label from being blown off during drying due to undried glue.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic glue applicator for labeling packaging boxes, comprising a frame, a glue applicator fixedly mounted on the upper surface of the frame, two glue guns slidably mounted inside the glue applicator via a connecting structure, a conveyor belt internally driven by the frame, a feeding plate embedded on the outer surface of the conveyor belt, two tightening sliders slidably mounted on the feeding plate, a pressure block slidably mounted between the two tightening sliders, a first spring fixedly mounted on the side of the tightening slider near the packaging box, a scale plate slidably mounted between the first spring and the tightening slider, an air-guiding curved surface mounted on the side of the feeding plate, and a drying rack fixedly mounted on the upper surface of the frame, with a drying trough fixedly mounted inside the drying rack.

[0009] Preferably, the pressure block is provided with a second tightening slope on both sides near the tightening slider, and the tightening slider is provided with a first tightening slope on the side near the pressure block.

[0010] Preferably, a snap-fit ​​connecting block is fixedly provided on the upper end face of the pressure block, a snap-fit ​​is slidably provided on the outer side of the feeding plate through the snap-fit ​​connecting block, and a plurality of second springs are fixedly provided between the snap-fit ​​connecting block and the snap-fit.

[0011] Preferably, a plurality of first locking blocks are fixedly provided on the outer side of the feeding plate, and a second locking block is provided at the lower end of the buckle.

[0012] Preferably, the surface of the conveyor belt is provided with a plurality of trapezoidal limiting grooves, and the lower end face of the feeding plate is fixedly provided with a plurality of trapezoidal limiting protrusions.

[0013] Preferably, the feeding plate is provided with multiple rollers on both sides near the frame via connecting plates, and feeding slots are provided on both sides at one end of the frame.

[0014] Preferably, an air pump is fixedly installed on the upper surface of the drying rack, a heater is fixedly installed on the upper surface of the drying rack, a first exhaust vent is fixedly installed on the lower surface of the drying trough, and a second exhaust vent is fixedly installed on the lower surface of the drying trough.

[0015] Preferably, two booster pumps are fixedly installed on the upper end face of the drying rack, a connecting frame is slidably installed inside the drying rack, slide rails are fixedly installed on the upper and lower end faces of the connecting frame, and sliders for clamping the glue gun are slidably installed outside the connecting frame and slide rails.

[0016] Preferably, a positioner is fixedly provided on one side of the slider.

[0017] In summary, compared with existing technologies, the beneficial effects of this solution are as follows: (1) This utility model is designed with a tightening slider, a pressure block and a buckle. By pressing the pressure block to lock the position, the tightening slider is driven to slide in the feeding device, so that the packaging box can be clamped and fixed in the feeding device, ensuring that the packaging box is not easy to loosen when dispensing glue, thus making the positioning accurate when dispensing glue.

[0018] (2) This utility model reduces the clamping force applied to the packaging box when pressing the pressure block at a certain distance by means of a first spring, scale plate and soft pad. The scale plate makes the clamping force on the packaging box visible, which makes it easy for the staff to adjust the clamping force, ensures that the packaging box will not be clamped and deformed, and improves the quality of the finished product.

[0019] (3) This utility model, through the structure of the air-guiding curved surface, heater and air pump, ensures that the hot air after heating during the drying process will not blow directly onto the labeling surface after being guided by the air-guiding system, but will blow over the labeling surface, so that the dispensing machine can quickly dry after dispensing and labeling, thereby improving the overall work efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is the front view of the present invention.

[0022] Figure 3 This is a top view of the present invention.

[0023] Figure 4 for Figure 2 Sectional view along the AA direction.

[0024] Figure 5 for Figure 3 Sectional view along the CC direction.

[0025] Figure 6 for Figure 1 Enlarged view of a section at point C.

[0026] Figure 7 for Figure 1 Enlarged view of a section at point D.

[0027] Figure 8 for Figure 4 Enlarged view of a section at point E in the middle.

[0028] Figure 9 for Figure 5 Enlarged view of a section at point F.

[0029] In the diagram: Frame 10, Rotating shaft 11, Motor 12, Conveyor belt 13, First push cylinder 14, Connecting frame 15, Slide rail 16, Second push cylinder 17, Dispensing gun 18, Booster pump 19, Feeding plate 20, Packaging box 21, Tightening slider 22, Pressure block 23, First spring 24, Tightening plate 25, Soft pad 26, Scale plate 27, Buckle connecting block 28, Second spring 29, Buckle 30, First locking block 31, Second locking block 32, Limiting groove 33, Limiting protrusion 34, Air-guiding curved surface 35, Air pump 36, Heater 37, Drying tank 38, First exhaust port 39, Second exhaust port 40, Roller 41, Feeding slot 42, Positioner 43, Dispensing rack 44, Drying rack 45, First tightening inclined surface 46, Second tightening inclined surface 47. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0031] Reference Appendix Figure 1 Appendix Figure 2 Appendix Figure 5 and attached Figure 6 An automatic glue applicator for labeling packaging boxes includes a frame 10. Rotary shafts 11 are rotatably mounted at both ends inside the frame 10. A motor 12 is fixedly mounted on the outside of the frame 10. The output end of the motor 12 is fixedly mounted to one side of the rotating shaft 11. A conveyor belt 13 is driven between the two rotating shafts 11. A feeding plate 20 for feeding is detachably mounted on the upper end of the conveyor belt 13. A packaging box 21 is clamped inside the feeding plate 20. A glue applicator 44 is mounted on the upper end of the frame 10. A connecting frame 15 is slidably mounted between the two sides inside the glue applicator 44. A first push cylinder 14 is fixedly mounted on the lower end of the glue applicator 44. The extended end of the first push cylinder 14 is fixedly mounted to the connecting frame 15. Two slide rails 16 are fixedly mounted on the upper and lower end faces of the connecting frame 15, respectively. Two sliders are slidably mounted on the outside of the connecting frame 15 and the slide rails 16. The slider is fixedly equipped with a glue gun 18. A positioner 43 is fixedly equipped at the end of the slider away from the snap-fit ​​connecting block 28. Two booster pumps 19 are fixedly equipped on the upper end face of the glue dispensing frame 44. A hose is connected between the air outlet of the booster pump 19 and the air inlet of the glue gun 18.

[0032] Specifically, when it is necessary to apply glue to the packaging box 21, the packaging box 21 can first be placed inside the loading plate 20 for clamping and fixing. Then, the loading plate 20 is placed at one end of the conveyor belt 13. Due to the transmission of the output end of the motor 12, the rotating shaft 11 will drive the conveyor belt 13 to rotate inside the frame 10. At this time, the loading plate 20 will be moved to the bottom of the glue dispensing rack 44. When it reaches the preset position, the positioner 43 will detect the position of the loading plate 20 and determine whether the packaging box 21 has moved into place. After determining that the position is appropriate, the first push cylinder 14 is activated to push the glue gun 18 above the packaging box 21 for glue dispensing. Since the glue dispensing positions for different packaging boxes 21 are not the same, the second push cylinder 17 can be activated. The extended end of the second push cylinder 17 will drive the slider with the glue gun 18 to slide outside the connecting frame 15 and the slide rail 16, so that the glue gun 18 reaches above the position where glue dispensing is required. More specifically, when dispensing glue, the booster pump 19 is activated to discharge gas from the air inlet end of the upper end of the glue gun 18 into the glue gun 18, thereby increasing the air pressure inside the glue gun 18 and dispensing glue from the glue gun 18 onto the end face of the packaging box 21. The operator can adjust the power of the booster pump 19 according to the needs of use so that the amount of glue discharged during dispensing meets the actual requirements.

[0033] Further, see attached document. Figure 1 and attached Figure 7 The upper surface and one side wall of the feeding plate 20 are not sealed, and are open to facilitate loading and unloading. Soft pads 26 are fixedly installed on both sides inside the feeding plate 20. Two tightening sliders 22 are slidably installed inside the feeding plate 20. A pressure block 23 is slidably installed between the two tightening sliders 22. A first tightening inclined surface 46 is provided on the side of the tightening slider 22 near the pressure block 23, and a second tightening inclined surface 47 is provided on the side of the pressure block 23 near the tightening slider 22. A first spring 24 is fixedly installed on the side of the tightening slider 22 away from the pressure block 23. A tightening plate 25 is fixedly installed on the side of the first spring 24 away from the tightening slider 22. Soft pads 26 are fixedly installed on the adjacent end faces of the tightening plate 25 and the inner wall of the feeding plate 20. A scale plate 27 is fixedly installed on one end of the tightening plate 25 near the open end of the frame 10. The surface of the tightening slider 22 is provided with a groove. The other end of the scale plate 27 is slidably installed in the groove on the surface of the tightening slider 22.

[0034] Specifically, when the packaging box 21 needs to be clamped, the packaging box 21 is placed between the tightening plate 25 and the feeding plate 20, and one side of the packaging box 21 is placed against the side of the feeding plate 20 without the soft pad 26. Then the pressure block 23 is pressed down. At this time, due to the action of the first tightening inclined surface 46 and the second tightening inclined surface 47, the pressure block 23 will push the two tightening sliders 22 towards the side closer to the feeding plate 20, thereby driving the tightening plate 25 to move towards the packaging box 21, thereby clamping and fixing the packaging box 21.

[0035] More specifically, during the clamping and fixing of the packaging box 21, after the tightening plate 25 pushes the packaging box 21 to move and contact the inner end face of the feeding plate 20, it further slides the tightening slider 22. At this time, the first spring 24 between the tightening plate 25 and the tightening slider 22 will be displaced under the action of the clamping force, and at the same time, the scale plate 27 will slide towards the inner groove of the tightening slider 22, making the clamping force on the packaging box 21 visible. The soft pads 26 inside the feeding plate 20 and on the surface of the tightening plate 25 can absorb part of the clamping force during the clamping and fixing process, thereby preventing the packaging box 21 from being subjected to excessive force, and also playing a role in anti-slip.

[0036] In actual operation, staff can observe the scale on the surface of the scale plate 27 to control the distance of the pressing block 23, so as to avoid the clamping force on the packaging box 21 exceeding its rated load capacity when clamping and fixing, which would cause the packaging box 21 to bend and affect the quality of the finished product.

[0037] Further, see attached document. Figure 1 Appendix Figure 7 and attached Figure 8 A snap-fit ​​connecting block 28 is fixedly provided on the end face of the pressure block 23. An L-shaped snap-fit ​​30 is slidably provided on the side of the snap-fit ​​connecting block 28 away from the scale plate 27 outside the feeding plate 20. Multiple second springs 29 are fixedly provided between the snap-fit ​​connecting block 28 and the snap-fit ​​30. A second locking block 32 is provided on the bottom of the snap-fit ​​30 near the feeding plate 20. Multiple first locking blocks 31 are provided on the outer side of the feeding plate 20 at the snap-fit ​​30.

[0038] Specifically, during the downward pressing of the pressure block 23, the latch 30 will move diagonally downward and stretch the second spring 29 under the action of the inclined surfaces of the second locking block 32 and the first locking block 31. Then, under the tightening force of the second spring 29, the second locking block 32 will slide into the slot between the multiple first locking blocks 31 for limiting. In actual operation, the operator can lock the second locking block 32 into the corresponding slot according to actual needs, so that the pressure block 23 is fixed at the corresponding height after being pressed down, so as to prevent the pressure block 23 from returning to its original position after the pressure is removed, thus preventing the packaging box 21 from being clamped and fixed.

[0039] Further, see attached document. Figure 1 Appendix Figure 3 Appendix Figure 7 and attached Figure 8The conveyor belt 13 has multiple trapezoidal limiting grooves 33 on its surface, and the lower end face of the feeding plate 20 has multiple trapezoidal limiting protrusions 34. Two connecting plates are fixedly installed on both sides of the feeding plate 20 near the frame 10, and multiple rollers 41 are rotatably installed between the two connecting plates. The two sides of the frame 10 near the motor 12 have feeding slots 42, and the feeding slots 42 near the dispensing frame 44 have a slope, which is flared.

[0040] Specifically, after clamping and fixing the packaging box 21, the feeding plate 20 can be placed on the conveyor belt 13 between the feeding slots 42, and the limiting protrusion 34 is embedded in the limiting groove 33 on the surface of the conveyor belt 13, so as to prevent the feeding plate 20 from sliding arbitrarily on the surface of the conveyor belt 13, thereby fixing the moving position of the packaging box 21. At this time, the feeding plate 20 is driven by the conveyor belt 13 to move towards the dispensing frame 44. During this period, multiple rollers 41 on one side will abut against the inclined surface of the feeding slot 42 and rotate, and under the action of the inclined surface, the feeding plate 20 is limited inside the frame 10. Then, the rollers 41 rotate on the two sides inside the frame 10, so that the feeding plate 20 can slide inside the frame 10 along with the conveyor belt 13 while being centered in the limiting position.

[0041] Further, see attached document. Figure 1 Appendix Figure 5 Appendix Figure 7 and attached Figure 9 A drying rack 45 is fixedly installed on the upper end of the frame 10 at the other end of the dispensing rack 44. A drying trough 38 is provided inside the drying rack 45. An air pump 36 is fixedly installed on the upper end of the drying rack 45. A heater 37 is fixedly installed on the upper end of the drying rack 45. A hose is provided between the air outlet of the air pump 36 and the air inlet of the heater 37. A hose is provided between the air outlet of the heater 37 and the air inlet on the upper end of the drying trough 38. Multiple first air outlets 39 that tilt downward toward one side of the frame 10 are fixedly installed on the lower end of the drying trough 38 near the two sides of the drying rack 45. Multiple second air outlets 40 that tilt downward toward the side away from the dispensing rack 44 are fixedly installed on the lower end of the drying trough 38 between the two first air outlets 39. An air-guiding curved surface 35 that tilts toward the packaging box 21 is provided on the upper end of the loading plate 20.

[0042] Specifically, after the glue dispensing machine dispenses glue and completes the labeling, the glue on the surface of the packaging box 21 needs to be dried. At this time, the air pump 36 and heater 37 are started to blow the heated air into the drying tank 38. Since the first air outlet 39 is tilted downwards towards the side of the frame 10 and the second air outlet 40 is tilted downwards away from the glue dispensing frame 44, the first air outlet 39 and the second air outlet 40 will exhaust the hot air and blow it towards the surface of the air-guiding curved surface 35. Then, through the air-guiding effect of the air-guiding curved surface 35, the hot air is blown over the upper side of the labeling area of ​​the packaging box 21, instead of blowing directly onto the labeling surface. This prevents the label from being blown off before the glue is dried, causing labeling failure and affecting the use effect of the labeling machine.

[0043] It should be noted that in actual production, an automatic labeling device is also installed between the dispensing machine and the drying structure. However, considering that this is a mature existing technology, this application has not made too many descriptions or graphic drawings in the specification and drawings.

[0044] Finally, it should be noted that the automatic glue applicator for labeling packaging boxes of this utility model can be connected and fixed by conventional mechanical connection structures. The control system and connection method required between multiple electrical components and drive components can also be achieved by conventional means and can be equipped with corresponding sensors and detectors. As long as the beneficial effect or the specific actions in the above work can be achieved, it can be implemented.

[0045] The booster pump 19, air pump 36, heater 37, and positioner 43 of the automatic glue applicator for labeling packaging boxes in this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0046] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0047] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0048] The foregoing description presents and describes several preferred embodiments of this application. However, as mentioned above, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. An automatic glue applicator for labeling packaging boxes, comprising a frame (10), characterized in that, A dispensing rack (44) is fixedly installed on the upper end face of the frame (10). Two dispensing guns (18) are slidably installed inside the dispensing rack (44) through a connecting structure. A conveyor belt (13) is installed inside the frame (10). A feeding plate (20) is embedded on the outer surface of the conveyor belt (13). Two tightening sliders (22) are slidably installed on the feeding plate (20). A pressure block (23) is slidably installed between the two tightening sliders (22). A first spring (24) is fixedly installed on the side of the tightening slider (22) near the packaging box (21). A scale plate (27) is slidably installed between the first spring (24) and the tightening slider (22). An air-guiding curved surface (35) is provided on the side of the feeding plate (20). A drying rack (45) is fixedly installed on the upper end face of the frame (10). A drying trough (38) is fixedly installed inside the drying rack (45).

2. An automatic glue applicator for labeling packaging boxes according to claim 1, characterized in that, The pressure block (23) has a second tightening slope (47) on both sides near the tightening slider (22), and the tightening slider (22) has a first tightening slope (46) on one side near the pressure block (23).

3. An automatic glue applicator for labeling packaging boxes according to claim 2, characterized in that, A snap-fit ​​connecting block (28) is fixedly provided on the upper end face of the pressure block (23), and a snap (30) is slidably provided on the outer side of the feeding plate (20) through the snap-fit ​​connecting block (28). A plurality of second springs (29) are fixedly provided between the snap-fit ​​connecting block (28) and the snap (30).

4. An automatic glue applicator for labeling packaging boxes according to claim 3, characterized in that, Multiple first locking blocks (31) are fixedly provided on the outer side of the feeding plate (20), and a second locking block (32) is provided at the lower end of the buckle (30).

5. An automatic glue applicator for labeling packaging boxes according to claim 1, characterized in that, The surface of the conveyor belt (13) is provided with a plurality of trapezoidal limiting grooves (33), and the lower end face of the feed plate (20) is fixedly provided with a plurality of trapezoidal limiting protrusions (34).

6. An automatic glue applicator for labeling packaging boxes according to claim 5, characterized in that, The feeding plate (20) is provided with multiple rollers (41) on both sides near the frame (10) via connecting plates, and feeding slots (42) are provided on both sides of one end of the frame (10).

7. An automatic glue applicator for labeling packaging boxes according to claim 1, characterized in that, An air pump (36) is fixedly installed on the upper end face of the drying rack (45), a heater (37) is fixedly installed on the upper end face of the drying rack (45), a first exhaust port (39) is fixedly installed on the lower end face of the drying trough (38), and a second exhaust port (40) is fixedly installed on the lower end face of the drying trough (38).

8. An automatic glue applicator for labeling packaging boxes according to claim 1, characterized in that, Two booster pumps (19) are fixedly installed on the upper end face of the drying rack (45). A connecting frame (15) is slidably installed inside the drying rack (45). Slide rails (16) are fixedly installed on the upper and lower end faces of the connecting frame (15). A slider for holding the glue gun (18) is slidably installed outside the connecting frame (15) and the slide rails (16).

9. An automatic glue applicator for labeling packaging boxes according to claim 8, characterized in that, A positioner (43) is fixedly installed on one side of the slider.

Images