A packaging printing glue applying device

Abstract

This utility model discloses a packaging printing glue application device, belonging to the technical field of glue application devices. It includes a glue storage box, a feeding roller, an L-shaped connecting shaft, an L-shaped mounting bracket, a push rod, and springs. The bottom of the glue storage box has a glue outlet, and the feeding roller contacts the edge of the outlet and is larger than the outlet. The L-shaped connecting shaft connects to the feeding roller and slides within the inner wall of the glue storage box. The push rod on the L-shaped mounting bracket abuts against the L-shaped connecting shaft through spring preload. The L-shaped mounting bracket is locked to the mounting platform on the outside of the glue storage box by a rotating buckle. This device achieves dynamic adjustment of the glue dispensing gap through the cooperation of the spring and the push rod. Combined with the adaptable structure between the feeding roller and the glue outlet, it prevents leakage and features convenient installation and disassembly. It is suitable for small-batch, multi-specification customized packaging glue application scenarios.

Description

Technical Field

[0001] This utility model relates to the field of glue application device technology, and in particular to a glue application device for packaging printing. Background Technology

[0002] In customized packaging scenarios with small batches and multiple specifications, the glue application process is usually done manually. When applying glue, the amount of glue needs to be controlled. If the amount of glue is insufficient, the adhesion will be weak and the packaging will easily fall apart; if the amount of glue is excessive, the glue will overflow and pollute the appearance and waste glue.

[0003] The manual glue application devices currently used by workers, such as Figures 1-2 As shown, the device includes a glue storage box 1, with a handle 1-4 on one side wall. Mounting brackets 1-5 extend downwards from both ends of the bottom of the glue storage box 1, and the two mounting brackets 1-5 have corresponding oblong holes 1-5.1 extending along the height direction. A glue dispensing roller 6 is rotatably mounted below the glue storage box 1. Connecting shafts are located on both sides of the glue dispensing roller 6, and are rotatably installed within the two oblong holes 1-5.1. The bottom of the glue storage box 1 has a glue outlet 1-1, and rotating shaft support seats 1-6 are located on the inner end faces of the glue storage box 1 on both sides of the glue outlet 1-1. A feeding roller 2 is rotatably connected between the two rotating shaft support seats 1-6 via a connecting shaft. The length of the oblong holes 1-5.1 meets the requirements for contact and separation between the feeding roller 2 and the glue dispensing roller 6.

[0004] When in use, with the glue dispensing roller 6 in contact with the packaging, pressure causes the glue dispensing roller 6 to move upward along the waist-shaped hole 1-5.1 until it contacts the feeding roller 2. The feeding roller 2 transfers the glue in the glue storage box 1 to the glue dispensing roller 6, and the glue dispensing roller 6 applies glue to the packaging. When the glue dispensing roller 6 is detached from the packaging, gravity causes the glue dispensing roller 6 to move downward along the waist-shaped hole 1-5.1 and detach from the feeding roller 2.

[0005] Existing manual glue application devices cannot control the amount of glue dispensed for the following reasons: The feeding roller 2 is rotatably installed between two rotating shaft support seats 1-6. The two rotating shaft support seats 1-6 are integrally formed with the glue storage box 1, so the gap between the feeding roller 2 and the glue outlet 1-1 is fixed, and the glue output is also fixed and cannot be adjusted.

[0006] In addition, existing manual glue application devices have the following drawbacks: Firstly, because the gap between the feeding roller 2 and the glue outlet 1-1 is fixed, the glue in the glue storage box 1 will continuously leak from the gap when it is stationary, which will affect the next use, cause material waste and contaminate the equipment.

[0007] Secondly, the device needs to be cleaned in time after use. The feeding roller 2 of the existing device is connected to the two rotating shaft support seats 1-6 through a connecting shaft. When disassembling, the connecting shaft must be disassembled before the feeding roller 2 can be taken out for cleaning. The steps are cumbersome and will cause contamination to the workers' hands. Utility Model Content

[0008] To address the aforementioned problems, the purpose of this utility model is to provide a packaging printing glue application device to solve the problem that existing manual glue application devices cannot control the amount of glue applied.

[0009] The technical solution of this utility model is as follows: A packaging printing glue application device includes a glue storage box. The bottom of the glue storage box has a glue outlet extending along its length. A feeding roller is installed in the glue outlet, with its outer circumferential surface contacting the edge of the glue outlet. The size of the feeding roller is larger than the size of the glue outlet. L-shaped connecting shafts are symmetrically arranged at both ends of the feeding roller. The horizontal section of the L-shaped connecting shaft is rotatably connected to the feeding roller and its axis is collinear. Its vertical section extends towards the opening of the glue storage box and slides along the height of the inner sidewall of the glue storage box. L-shaped mounting brackets are symmetrically arranged on the outer sidewall of the glue storage box. The horizontal section of the L-shaped mounting bracket is located above the opening of the glue storage box, and a vertically movable push rod passes through the horizontal section. A stop ring is provided at the lower end of the push rod, and a compressed spring is sleeved around the outer circumference of the push rod. The upper end of the spring abuts against the lower end face of the horizontal section of the L-shaped mounting bracket, and the lower end abuts against the stop ring. The lower end face of the push rod abuts against the upper end face of the vertical section of the L-shaped connecting shaft.

[0010] Furthermore, the bottom wall thickness of the glue storage box is greater than the side wall thickness. The two side walls of the glue outlet along the length direction are inclined surfaces adapted to the outer periphery of the feeding roller. Since the bottom is provided with a glue outlet and needs to withstand the pressure of the feeding roller (the resistance force when closing and the friction force when dispensing glue), thickening the wall thickness can improve durability and prevent the edge of the glue outlet from deforming after long-term use (leading to seal failure).

[0011] Furthermore, the two ends of the feeding roller are symmetrically provided with blind holes along the axis, and PC tubes are interference-fitted into the blind holes. The horizontal section of the L-shaped connecting shaft passes through the PC tube and rotates with the PC tube. The PC tube is used to reduce the rotational friction between the horizontal section of the L-shaped connecting shaft and the feeding roller.

[0012] Furthermore, the inner wall of the glue storage box is provided with guide grooves, which are symmetrically distributed with respect to the L-shaped connecting shaft and extend along the height direction of the glue storage box. The vertical section of the L-shaped connecting shaft is embedded in the guide groove and slides up and down along the guide groove.

[0013] Furthermore, the outer wall of the glue storage box has a mounting platform, which is symmetrically distributed with respect to the L-shaped mounting bracket and extends along the height direction of the glue storage box. The lower end of the mounting platform away from the glue storage box is provided with lugs symmetrically arranged along the width direction of the mounting platform, and the vertical section of the L-shaped mounting bracket is hinged between the two lugs.

[0014] Furthermore, the vertical section of the L-shaped mounting bracket has a rectangular through slot extending along its height direction. A blind hole is provided at a corresponding position on the mounting platform. A rotating buckle that engages with the rectangular through slot is screwed into the blind hole. The rotating buckle includes an operating part and a screw. The screw engages with the blind hole. The radial dimension of the operating part is greater than the width of the rectangular through slot and less than the length of the rectangular through slot. When the L-shaped mounting bracket is locked to the mounting platform, the screw passes through the rectangular through slot, and the operating part rotates to abut against the edge of the rectangular through slot, restricting the L-shaped mounting bracket from rotating around the lug.

[0015] Furthermore, the horizontal section of the L-shaped mounting bracket has a through hole, and the push rod passes through the through hole and can move vertically along the through hole; the upper part of the push rod protrudes from the through hole, and the protruding part has an external thread, on which a nut is screwed; the lower end face of the nut abuts against the upper end face of the horizontal section of the L-shaped mounting bracket to limit the downward movement of the push rod.

[0016] The beneficial effects of this utility model are as follows: 1. This utility model uses a compression spring to provide continuous downward pressure to the push rod, which pushes the L-shaped connecting shaft to drive the feeding roller to fit with the glue outlet; when applying glue, the pressure of the glue outlet roller causes the feeding roller to move upward, while the length of the push rod limits the maximum gap value, and the glue amount can be flexibly adjusted according to material requirements.

[0017] 2. The material feeding roller of this utility model is larger than the glue outlet, and the inclined surfaces on both sides of the glue outlet are adapted to the outer periphery of the roller to increase the sealing contact area; the spring continuously applies pressure through the push rod to ensure that the roller and the glue outlet are tightly fitted when stationary, blocking the leakage path and reducing glue waste and equipment pollution.

[0018] 3. The present invention features an unlocking rotating buckle and an outward rotating L-shaped mounting bracket, with the push rod releasing the pressure on the L-shaped connecting shaft; the feeding roller can be removed by sliding along the guide groove, and can be reinstalled by reversing the operation after cleaning. This simplifies the cleaning process, avoids the hardening of glue residue affecting the subsequent glue application effect, and reduces the risk of glue contamination to workers' hands. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a conventional manual glue application device.

[0020] Figure 2 A top view of a conventional manual glue application device.

[0021] Figure 3 This is a schematic diagram of the structure of this utility model.

[0022] Figure 4 This is a top view of the present invention.

[0023] Figure 5 This is a schematic diagram showing the unlocked state of the L-shaped mounting bracket and mounting platform of this utility model.

[0024] Figure 6 This is a disassembly diagram of the L-shaped mounting bracket and mounting platform, push rod and spring of this utility model.

[0025] Figure 7 This is a schematic diagram of the glue storage box structure of this utility model.

[0026] Figure 8 This is a schematic diagram of the feeding roller structure of this utility model.

[0027] Reference numerals in the attached drawings: 1. Glue storage box; 1-1. Glue outlet; 1-2. Guide groove; 1-3. Mounting platform; 1-3.1. Rotary buckle; 1-3.2. Ear piece; 1-4. Handle; 1-5. Mounting bracket; 1-5.1. Waist-shaped hole; 1-6. Rotary shaft support seat; 2. Feeding roller; 2-1. L-shaped connecting shaft; 3. L-shaped mounting bracket; 3-1. Rectangular through groove; 4. Push rod; 4-1. Stop ring; 4-2. Nut; 5. Spring; 6. Glue dispensing roller. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] like Figures 1 to 8 As shown, a packaging printing glue application device includes a glue storage box 1. The bottom of the glue storage box 1 has a glue outlet 1-1 extending along its length. A feeding roller 2 is installed in the glue outlet 1-1. The outer circumferential surface of the feeding roller 2 contacts the edge of the glue outlet 1-1, and the size of the feeding roller 2 is larger than the size of the glue outlet 1-1. L-shaped connecting shafts 2-1 are symmetrically arranged at both ends of the feeding roller 2. The horizontal section of the L-shaped connecting shaft 2-1 is rotatably connected to the feeding roller 2 and its axis is collinear. Its vertical section extends towards the opening end of the glue storage box 1. The extension and sliding fit with the inner side wall of the glue storage box 1 along the height direction; the outer side wall of the glue storage box 1 is symmetrically provided with an L-shaped mounting bracket 3, the horizontal section of the L-shaped mounting bracket 3 is located above the opening end of the glue storage box 1, and the horizontal section is through which a push rod 4 that can move up and down is passed; the lower end of the push rod 4 is provided with a stop ring 4-1, and the outer periphery of the push rod 4 is fitted with a compressed spring 5, the upper end of the spring 5 abuts against the lower end face of the horizontal section of the L-shaped mounting bracket 3, and the lower end abuts against the stop ring 4-1; the lower end face of the push rod 4 abuts against the upper end face of the vertical section of the L-shaped connecting shaft 2-1.

[0030] Furthermore, the bottom wall thickness of the glue storage box 1 is greater than the side wall thickness. The two side walls of the glue outlet 1-1 along the length direction are inclined surfaces adapted to the outer periphery of the feeding roller 2. Since the bottom is equipped with the glue outlet 1-1 and needs to withstand the pressure of the feeding roller 2 (the resistance force when closing and the friction force when dispensing glue), thickening the wall thickness can improve durability and prevent the edge of the glue outlet 1-1 from deforming after long-term use (leading to seal failure).

[0031] Furthermore, the two ends of the feeding roller 2 are symmetrically provided with blind holes along the axis. PC tubes are interference-fitted into the blind holes. The horizontal section of the L-shaped connecting shaft 2-1 passes through the PC tube and rotates with the PC tube. The PC tube is used to reduce the rotational friction between the horizontal section of the L-shaped connecting shaft 2-1 and the feeding roller 2.

[0032] Furthermore, the inner wall of the glue storage box 1 is provided with guide grooves 1-2. The guide grooves 1-2 are symmetrically distributed with respect to the L-shaped connecting shaft 2-1 and extend along the height direction of the glue storage box 1. The vertical section of the L-shaped connecting shaft 2-1 is embedded in the guide grooves 1-2 and slides up and down along the guide grooves 1-2.

[0033] Furthermore, the outer wall of the glue storage box 1 has a mounting platform 1-3. The mounting platform 1-3 is symmetrically distributed with respect to the L-shaped mounting bracket 3 and extends along the height direction of the glue storage box 1. The lower end of the mounting platform 1-3 away from the glue storage box 1 is provided with lugs 1-3.2 symmetrically arranged along the width direction of the mounting platform 1-3. The vertical section of the L-shaped mounting bracket 3 is hinged between the two lugs 1-3.2.

[0034] Furthermore, the vertical section of the L-shaped mounting bracket 3 has a rectangular through groove 3-1 extending along its height direction. A blind hole is provided at the corresponding position on the mounting platform 1-3. A rotating buckle 1-3.1 that engages with the rectangular through groove 3-1 is screwed into the blind hole. The rotating buckle 1-3.1 includes an operating part and a screw. The screw engages with the blind hole. The radial dimension of the operating part is greater than the width of the rectangular through groove 3-1 and less than the length of the rectangular through groove 3-1. When the L-shaped mounting bracket 3 and the mounting platform 1-3 are locked, the screw passes through the rectangular through groove 3-1, and the operating part rotates to abut against the edge of the rectangular through groove 3-1, restricting the L-shaped mounting bracket 3 from rotating around the lug 1-3.2.

[0035] Furthermore, the horizontal section of the L-shaped mounting bracket 3 has a through hole, through which the push rod 4 passes and can move vertically along the through hole; the upper part of the push rod 4 protrudes from the through hole, and the protruding part has an external thread, on which a nut 4-2 is screwed; the lower end face of the nut 4-2 abuts against the upper end face of the horizontal section of the L-shaped mounting bracket 3 to limit the downward stroke of the push rod 4.

[0036] Working principle of this utility model: The installation process is as follows: 1. Installation of push rod and spring: Insert the compressed spring 5 from the upper end of push rod 4, so that the lower end of spring 5 abuts against the stop ring 4-1 of push rod 4; then push rod 4 (with spring 5) through the through hole of the horizontal section of L-shaped mounting bracket 3 from bottom to top until the upper end of push rod 4 protrudes from the through hole; screw nut 4-2 onto the external thread of the protruding part of push rod 4, and complete the assembly of push rod 4 and mounting bracket 3 by the abutment between the lower end face of nut 4-2 and the upper end face of the horizontal section of L-shaped mounting bracket 3.

[0037] 2. Unlocking and Position Adjustment of L-shaped Mounting Bracket: Operate the rotating buckle 1-3.1 on the mounting platform 1-3: Rotate the operating part of buckle 1-3.1 until it is parallel to the length direction of the rectangular through groove 3-1 of the vertical section of L-shaped mounting bracket 3 (i.e., the axis of the operating part is consistent with the long side of the through groove). At this time, the radial dimension of the operating part is smaller than the length of the through groove 3-1, thereby unlocking L-shaped mounting bracket 3 from mounting platform 1-3; Rotate L-shaped mounting bracket 3 outward around the hinge axis of ear piece 1-3.2 so that push rod 4 is away from the opening end of glue storage box 1, reserving space for subsequent installation of L-shaped connecting shaft 2-1.

[0038] 3. Installation of the feeding roller: Align the vertical sections of the two L-shaped connecting shafts 2-1 with the guide grooves 1-2 on the inner side wall of the glue storage box 1, and then insert them into the guide grooves 1-2 from top to bottom and slide them until the outer circumference of the feeding roller 2 abuts against the edge of the glue outlet 1-1 at the bottom of the glue storage box 1 (at this time, the upper end of the vertical section of the L-shaped connecting shaft 2-1 is in the abutment state).

[0039] 4. Reset and locking of L-shaped mounting bracket: Rotate L-shaped mounting bracket 3 around ear piece 1-3.2 until the lower end face of push rod 4 is in close contact with the upper end face of the vertical section of L-shaped connecting shaft 2-1. At this time, rotating buckle 1-3.1 passes through rectangular through groove 3-1. Operate buckle 1-3.1 to rotate the operating part around the screw axis by 90° so that the radial dimension of the operating part is perpendicular to the width direction of through groove 3-1 (the edge of the operating part abuts against the edge of through groove 3-1) to complete the locking.

[0040] The workflow is as follows: 1. Initial static state: The compressed spring 5 applies downward pressure to the L-shaped connecting shaft 2-1 through the push rod 4, forcing the outer circumference of the feeding roller 2 to fit tightly against the edge of the glue outlet 1-1 of the glue storage box 1 (the size of the roller 2 is larger than the glue outlet 1-1, achieving a full seal). At the same time, the inclined surfaces on both sides of the glue outlet 1-1 are adapted to the outer circumference of the roller 2, blocking the glue leakage path.

[0041] 2. Glue Dispensing Adjustment Logic: When applying glue, the outer circumference of the glue dispensing roller 6 abuts against the outer circumference of the feeding roller 2 and generates upward pressure. This pressure overcomes the preload of the spring 5 and pushes the feeding roller 2 to move upward. Simultaneously, it drives the L-shaped connecting shafts 2-1 at both ends to move upward along the guide grooves 1-2 on the inner side wall of the glue storage box 1. The gap between the feeding roller 2 and the glue outlet 1-1 changes. The length of the push rod 4 limits the maximum value of the gap. When the L-shaped connecting shaft 2-1 moves upward to the point where the push rod 4 can no longer extend, the gap between the feeding roller 2 and the glue outlet 1-1 reaches its maximum value, thus achieving adjustable glue dispensing.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A packaging printing gumming device comprising a gum storage box, characterized in that: The bottom of the glue storage box has a glue outlet extending along its length. A feeding roller is provided in the glue outlet. The outer circumferential surface of the feeding roller is in contact with the edge of the glue outlet, and the size of the feeding roller is larger than the size of the glue outlet. The feeding roller is symmetrically provided with L-shaped connecting shafts at both ends. The horizontal section of the L-shaped connecting shaft is rotatably connected to the feeding roller and the axis is collinear. Its vertical section extends toward the opening end of the glue storage box and slides in cooperation with the inner side wall of the glue storage box along the height direction. The outer side wall of the glue storage box is symmetrically provided with L-shaped mounting brackets. The horizontal section of the L-shaped mounting bracket is located above the opening end of the glue storage box, and a push rod that can move up and down passes through the horizontal section. The lower end of the push rod is provided with a stop ring, and a compressed spring is sleeved on the outer periphery of the push rod. The upper end of the spring abuts against the lower end face of the horizontal section of the L-shaped mounting bracket, and the lower end abuts against the stop ring. The lower end face of the push rod abuts against the upper end face of the vertical section of the L-shaped connecting shaft.

2. A packaging printing gumming device according to claim 1, characterized in that The bottom wall thickness of the glue storage box is greater than the side wall thickness, and the two side walls of the glue outlet along the length direction are inclined surfaces adapted to the outer periphery of the feeding roller.

3. The packaging printing glue application device according to claim 1, characterized in that, The two ends of the feeding roller are symmetrically provided with blind holes along the axis. PC tubes are interference-fitted into the blind holes. The horizontal section of the L-shaped connecting shaft passes through the PC tube and rotates with the PC tube.

4. The packaging printing glue application device according to claim 1, characterized in that, The inner wall of the glue storage box is provided with guide grooves, which are symmetrically distributed with respect to the L-shaped connecting shaft and extend along the height direction of the glue storage box. The vertical section of the L-shaped connecting shaft is embedded in the guide groove and slides up and down along the guide groove.

5. The packaging printing glue application device according to claim 1, characterized in that, The outer wall of the glue storage box has a mounting platform, which is symmetrically distributed with respect to the L-shaped mounting frame and extends along the height direction of the glue storage box. The lower end of the mounting platform away from the glue storage box is provided with lugs symmetrically arranged along the width direction of the mounting platform. The vertical section of the L-shaped mounting frame is hinged between the two lugs.

6. The packaging printing glue application device according to claim 5, characterized in that, The vertical section of the L-shaped mounting bracket has a rectangular through slot extending along its height. A blind hole is provided at a corresponding position on the mounting platform. A rotating buckle that engages with the rectangular through slot is screwed into the blind hole. The rotating buckle includes an operating part and a screw. The screw engages with the blind hole. The radial dimension of the operating part is greater than the width of the rectangular through slot and less than the length of the rectangular through slot. When the L-shaped mounting bracket is locked to the mounting platform, the screw passes through the rectangular through slot, and the operating part rotates to abut against the edge of the rectangular through slot, restricting the L-shaped mounting bracket from rotating around the lug.

7. The packaging printing glue application device according to claim 1, characterized in that, The horizontal section of the L-shaped mounting bracket has a through hole, and the push rod passes through the through hole and can move vertically along the through hole; the upper part of the push rod protrudes from the through hole, and the protruding part has an external thread, on which a nut is screwed; the lower end face of the nut abuts against the upper end face of the horizontal section of the L-shaped mounting bracket.

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