A kind of anti-glue overflow mechanism for carton lining machine

Abstract

The utility model relates to a kind of paper box lining machine with anti-glue overflow mechanism, it is related to paper box lining technical field, including mounting bracket, the sliding bracket is slidably installed on the mounting bracket, and drive mechanism is installed, the sliding bracket is connected with drive mechanism transmission, extrusion mechanism is movably inserted on the mounting bracket, and the extrusion mechanism is connected with sliding bracket;The extrusion mechanism includes barrel, push rod, second sealing plug, screw rod, cover, internal thread sleeve and first sealing plug, one end of the push rod is movably inserted in one end of barrel, the one end of the push rod is inserted in the top of sliding bracket, the second sealing plug is located in the one end of push rod in barrel, the screw rod is fixed at the center of second sealing plug, the cover is threadedly connected in the one end of barrel, the first sealing plug is movably sleeved on the internal thread sleeve in barrel, and the screw rod is threadedly connected with internal thread sleeve.The utility model reaches the effect of preventing overflow from source.

Description

Technical Field

[0001] This utility model relates to the field of paper box pasting technology, specifically to a glue overflow prevention mechanism for a paper box pasting machine. Background Technology

[0002] In the cardboard box lining process, glue needs to be applied to the inside of the cardboard box to adhere the lining paper, ensuring the structural strength and performance of the box. The uniformity of glue application and the appropriate amount are crucial to the lining quality. Too much glue will easily overflow, while too little will result in poor adhesion. Therefore, precise control of the glue extrusion amount is urgently needed.

[0003] Existing glue extrusion mechanisms used in cardboard box laminating machines mostly employ simple piston-type extrusion structures, where the piston is manually or through a simple drive to expel glue.

[0004] This structure suffers from significant differences in glue usage for different sizes of cardboard boxes, and the glue feed rate is uncontrollable, making it prone to glue overflow. Furthermore, it lacks precise means of adjusting the extrusion rate, resulting in poor adaptability to the needs of cardboard box lining of different sizes. It is impossible to accurately control the amount of glue used, which affects the lining quality and increases glue waste and subsequent cleaning costs.

[0005] Therefore, a glue overflow prevention mechanism for a cardboard box pasting machine is proposed to solve the above problems. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a glue overflow prevention mechanism for a cardboard box pasting machine.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A glue overflow prevention mechanism for a cardboard box pasting machine includes a mounting frame, a slide rail slidably mounted on the mounting frame, and a drive mechanism mounted thereon. The slide rail is connected to the drive mechanism in a transmission manner. An extrusion mechanism is movably inserted into the mounting frame and is connected to the slide rail. The extrusion mechanism includes a barrel, a push rod, a second sealing plug, a screw, a cover, an internal threaded sleeve, and a first sealing plug. One end of the push rod is movably inserted into one end of the barrel, and the other end of the push rod away from the barrel is inserted into the top of the carriage. The second sealing plug is located at one end of the push rod inside the barrel. The screw is fixed at the center of the second sealing plug. The cover is threadedly connected to the end of the barrel away from the push rod. A hole is provided at the center of the cover, through which the internal threaded sleeve passes and extends into the barrel. The first sealing plug is movably fitted onto the internal threaded sleeve inside the barrel. The screw is threadedly connected to the internal threaded sleeve.

[0008] The beneficial effects of this utility model are: The mounting bracket provides stable support for the carriage, drive mechanism, and extrusion mechanism, ensuring stable operation of the entire mechanism. The drive mechanism is connected to the carriage, allowing it to slide smoothly along the mounting bracket, which in turn drives the push rod to reciprocate regularly within the barrel. A second sealing plug is located at the end of the push rod that extends into the barrel. The screw at its center engages with the internal threaded sleeve passing through the cover. Rotating the internal threaded sleeve adjusts the distance between the first and second sealing plugs, precisely controlling the amount of glue dispensed per cycle and preventing glue overflow from the source. Furthermore, the first sealing plug moves stably under the pressure of the glue, working in conjunction with the second sealing plug to create a sealed space within the barrel, allowing for normal glue discharge.

[0009] Furthermore, the extrusion mechanism also includes a feed nozzle, and the top of the barrel has an installation hole. The feed nozzle is installed in the installation hole by threaded connection, and the feed nozzle has a hollow structure.

[0010] The hollow feed nozzle, installed via threads, facilitates stable injection of adhesive into the barrel and makes subsequent disassembly, cleaning, and maintenance of the feed nozzle easy.

[0011] Furthermore, the feed nozzle is configured as a three-way structure, which includes a vertical port and two horizontal ports. The vertical port is connected to the mounting hole at the top of the material cylinder, and the two horizontal ports are respectively located on both sides of the vertical port, and both are connected to the inside of the material cylinder through the vertical port.

[0012] The three-way feed nozzle can expel air from the barrel and recover excess glue through the horizontal port, avoiding air residue from affecting glue discharge stability or wasting glue.

[0013] Furthermore, the extrusion mechanism also includes a discharge pipe, and a discharge hole is provided at the bottom of the barrel near the cover. One end of the discharge pipe is connected to the discharge hole, and the discharge pipe is fixed to the barrel by welding.

[0014] The welded and fixed discharge pipe can accurately guide the glue in the barrel to be discharged, while the welded structure ensures the sealing of the discharge point to prevent glue leakage.

[0015] Furthermore, three sliding rods are fixedly installed along a circular array on the side of the first sealing plug away from the push rod. Guide holes are provided on the cover corresponding to the position of each sliding rod, and the end of each sliding rod away from the first sealing plug slides through the corresponding guide hole.

[0016] The sliding rods of the annular array cooperate with the guide holes of the cover to limit the movement direction of the first sealing plug, ensuring that it slides smoothly along the internal threaded sleeve and improving the sealing reliability.

[0017] Furthermore, the first sealing plug has an insertion groove on the side facing the cover, and the insertion groove is a cylindrical groove adapted to the outer wall of the internal threaded sleeve.

[0018] The cylindrical insertion groove that fits the internal threaded sleeve enhances the tightness of the fit between the first sealing plug and the internal threaded sleeve, preventing relative radial misalignment between the two.

[0019] Furthermore, the drive mechanism includes a drive motor and a bidirectional lead screw. The drive motor is fixedly mounted on one side of the mounting bracket. One end of the bidirectional lead screw is connected to the output shaft of the drive motor via a coupling. The other end of the bidirectional lead screw is rotatably mounted on the mounting bracket via a bearing seat. The slide has a threaded hole adapted to the bidirectional lead screw, and the slide is threadedly connected to the bidirectional lead screw through the threaded hole.

[0020] The drive motor, in conjunction with the bidirectional lead screw, drives the slide, enabling the slide to slide smoothly back and forth along the mounting frame, providing power for the stable pushing and pulling of the push rod. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a frontal cross-sectional view of the feeding state of this utility model. Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a frontal cross-sectional view of the material discharge state of this utility model. Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the disassembled structure of the first sealing plug and the inner threaded sleeve of this utility model.

[0022] The attached diagram lists the components represented by each number as follows: 1. Mounting bracket; 2. Carriage; 3. Drive mechanism; 31. Drive motor; 32. Bidirectional lead screw; 4. Extrusion mechanism; 41. Barrel; 411. Feed nozzle; 412. Discharge pipe; 42. Push rod; 43. First sealing plug; 431. Internal threaded sleeve; 432. Slide rod; 433. Insertion slot; 44. Second sealing plug; 441. Screw; 45. Cover. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0026] In the description of this application, spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “over,” etc., are used herein to describe the relationship between an element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as “below,” “under,” or “below” will be oriented “over” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0027] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0028] Figure 1 A structural diagram of the glue overflow prevention mechanism for a cardboard box pasting machine provided in this embodiment of the utility model; Figure 2 This is a frontal cross-sectional view of the feeding state of this utility model. Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a frontal cross-sectional view of the material discharge state of this utility model. Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the disassembled structure of the first sealing plug and the inner threaded sleeve of this utility model.

[0029] like Figure 1 As shown, the device includes a mounting frame 1, with parallel sliding guide rails provided on the inner side of the mounting frame 1 along the length direction; the bottom of the slide 2 is provided with a slider that matches the sliding guide rails, and the slide 2 is slidably mounted on the mounting frame 1 through the cooperation of the slider and the guide rails; The drive mechanism 3 is fixedly mounted on one side of the mounting bracket 1, and the slide 2 and the drive mechanism 3 form a transmission cooperation. The mounting bracket 1 is also equipped with an extrusion mechanism 4, which is arranged horizontally. One end of the extrusion mechanism 4 is fixedly connected to the top of the slide 2 through an insertion structure. The extrusion mechanism 4 can discharge glue through the sliding action of the slide 2.

[0030] like Figures 1 to 6 As shown, the drive mechanism 3 includes a drive motor 31 and a double-acting lead screw 32. The drive motor 31 is fixedly mounted on one side of the mounting bracket 1 by fasteners, and the output shaft of the drive motor 31 is connected to one end of the double-acting lead screw 32 via a coupling. The other end of the double-acting screw 32 is rotatably mounted on the other end of the mounting bracket 1 via a bearing seat, and the axis of the double-acting screw 32 remains parallel to the sliding guide rail on the mounting bracket 1; The slide 2 has an internal thread hole that matches the external thread of the double-acting screw 32. The slide 2 meshes with the double-acting screw 32 through the internal thread hole. When the double-acting screw 32 rotates, it can drive the slide 2 to slide horizontally back and forth along the sliding guide rail.

[0031] The extrusion mechanism 4 includes a barrel 41, a feed nozzle 411, a discharge pipe 412, a push rod 42, a first sealing plug 43, an internal threaded sleeve 431, a slide rod 432, an insertion groove 433, a second sealing plug 44, a screw 441, and a cover 45. The barrel 41 is a cylindrical hollow structure with openings at both ends, and its inner wall is smoothed to reduce glue residue. The top of the barrel 41 is provided with a mounting hole with internal threads on the side near the push rod 42. The feed nozzle 411 is detachably installed in the mounting hole through thread engagement. The feed nozzle 411 is designed as a three-way structure, including a vertical port and two horizontal ports. The lower end of the vertical port is connected to the mounting hole of the barrel 41. The two horizontal ports are symmetrically distributed on both sides of the vertical port and are connected to the interior of the vertical port to form a channel for feeding, venting and returning glue. A discharge hole is provided on the bottom side of the material cylinder 41 near the cover 45. One end of the discharge pipe 412 is fixedly connected to the discharge hole by welding, and the other end of the discharge pipe 412 is used to connect to the glue dispensing pipeline.

[0032] A push rod 42 is movably inserted at the end of the material cylinder 41 away from the cover 45. The axis of the push rod 42 coincides with the axis of the material cylinder 41. The end of the push rod 42 away from the material cylinder 41 is inserted into the top of the slide 2 by vertical insertion and removal. The axis of the material cylinder 41 is kept parallel to the sliding direction of the slide 2. Inside the material cylinder 41, a second sealing plug 44 is installed at one end of the push rod 42 through a fixing structure. The second sealing plug 44 is fitted onto the end of the push rod 42 by an interference fit, and the mating surface is coated with anaerobic adhesive to enhance the fixing reliability. The outer wall of the second sealing plug 44 is tightly fitted to the inner wall of the material cylinder 41, and the outer wall of the push rod 42 is also tightly fitted to the inner wall of the material cylinder 41. A screw 441 is fixedly installed at the center of the second sealing plug 44 by a fastening method, and the axis of the screw 441 coincides with the axis of the push rod 42.

[0033] A cover 45 is threaded onto one end of the barrel 41 away from the push rod 42. A through hole is provided at the center of the cover 45. The diameter of the hole is adapted to the outer diameter of the internal threaded sleeve 431. The internal threaded sleeve 431 is movably inserted into the hole. One end of the internal threaded sleeve 431 extends into the inside of the barrel 41, and the other end extends to the outside of the cover 45 for operation. The internal thread of the internal threaded sleeve 431 engages with the external thread of the screw 441. A first sealing plug 43 is movably fitted on the internal threaded sleeve 431 inside the barrel 41. The outer wall of the first sealing plug 43 is tightly fitted with the inner wall of the barrel 41. A cylindrical insertion groove 433 is opened on the side of the first sealing plug 43 facing the cover 45. The inner wall of the insertion groove 433 is fitted with the outer wall of the internal threaded sleeve 431. One end of the internal threaded sleeve 431 that extends into the barrel 41 is movably inserted into the insertion groove 433.

[0034] The first sealing plug 43 is fixedly installed with a slide rod 432 along the annular array on the side opposite to the push rod 42. The axis of the slide rod 432 is parallel to the axis of the material cylinder 41. Both the first sealing plug 43 and the second sealing plug 44 are made of solvent-resistant silicone material. Guide holes are provided on the cover 45 corresponding to the position of each slide rod 432. The diameter of the guide hole is adapted to the outer diameter of the slide rod 432. The end of each slide rod 432 away from the first sealing plug 43 slides through the corresponding guide hole.

[0035] In use, first determine the amount of glue required for a single application based on the specifications of the cardboard box to be lined. Rotate the inner threaded sleeve 431 on the outside of the cover 45. Utilize the thread engagement between the inner threaded sleeve 431 and the screw 441 to drive the inner threaded sleeve 431 to move along the axis of the barrel 41. The inner threaded sleeve 431 pushes the first sealing plug 43 towards the second sealing plug 44 through the insertion groove 433. At the same time, the slide rod 432 slides along the guide hole on the cover 45 until the space between the first sealing plug 43 and the second sealing plug 44 matches the amount of glue required for a single application, thus completing the glue application adjustment.

[0036] Then, the glue is injected from one of the horizontal ports of the feed nozzle 411. The glue flows into the space between the first sealing plug 43 and the second sealing plug 44 in the barrel 41 through the vertical port. The air and excess glue in the barrel 41 are discharged through the other horizontal port of the feed nozzle 411. This horizontal port is connected to the external glue return pipeline. The excess glue flows back to the storage device. During use, glue injection is continuously performed. The bottom of the feed nozzle 411 can be sealed by the push rod 42.

[0037] Next, the glue discharge is performed. The drive motor 31 is powered on and runs. The output shaft drives the bidirectional lead screw 32 to rotate through the coupling. The bidirectional lead screw 32 drives the slide 2 to move along the sliding guide rail towards the material cylinder 41. The slide 2 pushes the push rod 42 to move along the axis of the barrel 41 toward the first sealing plug 43. The push rod 42 drives the second sealing plug 44 to squeeze the glue. The glue pushes the first sealing plug 43 to move toward the cover 45. At the same time, the slide rod 432 slides along the guide hole. The glue flows into the discharge pipe 412 through the discharge hole at the bottom of the barrel 41, and is discharged from the discharge pipe 412; When the second sealing plug 44 moves to its limit position near the cover 45, the glue in the barrel 41 is basically discharged.

[0038] After one glue discharge is completed, the drive motor 31 reverses, driving the bidirectional lead screw 32 to rotate in the opposite direction. The slide 2 moves away from the material cylinder 41, pulling the push rod 42 and the second sealing plug 44 to reset. At this time, the push rod 42 moves and re-exposes the bottom of the feed nozzle 411, and the glue continues to enter the discharge cylinder 41, ready for the next operation.

[0039] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A glue overflow prevention mechanism for a cardboard box pasting machine, characterized in that, include: Mounting frame (1), on which a slide (2) is slidably mounted and a drive mechanism (3) is mounted, the slide (2) is connected to the drive mechanism (3) in a transmission manner, and an extrusion mechanism (4) is movably inserted into the mounting frame (1), the extrusion mechanism (4) is connected to the slide (2); The extrusion mechanism (4) includes a barrel (41), a push rod (42), a second sealing plug (44), a screw (441), a cover (45), an internal threaded sleeve (431), and a first sealing plug (43). One end of the push rod (42) is movably inserted into one end of the barrel (41), and the other end of the push rod (42) facing away from the barrel (41) is inserted into the top of the slide (2). The second sealing plug (44) is located at one end of the push rod (42) inside the barrel (41). The screw (441) is fixed at the center of the second sealing plug (44). The cover (45) is threaded to the end of the barrel (41) away from the push rod (42). A hole is provided at the center of the cover (45). The internal threaded sleeve (431) passes through the hole and extends into the barrel (41). The first sealing plug (43) is movably sleeved on the internal threaded sleeve (431) inside the barrel (41). The screw (441) is threadedly connected to the internal threaded sleeve (431).

2. The anti-glue overflow mechanism for a cardboard box pasting machine according to claim 1, characterized in that, The extrusion mechanism (4) also includes a feed nozzle (411). The top of the barrel (41) has an installation hole. The feed nozzle (411) is installed in the installation hole by threaded connection. The feed nozzle (411) has a hollow structure.

3. The anti-glue overflow mechanism for a cardboard box pasting machine according to claim 2, characterized in that, The feed nozzle (411) is configured as a three-way structure, which includes a vertical port and two horizontal ports. The vertical port is connected to the mounting hole at the top of the material cylinder (41), and the two horizontal ports are respectively located on both sides of the vertical port and are connected to the inside of the material cylinder (41) through the vertical port.

4. The anti-glue overflow mechanism for a cardboard box pasting machine according to claim 1, characterized in that, The extrusion mechanism (4) also includes a discharge pipe (412). A discharge hole is provided at the bottom of the barrel (41) near the cover (45). One end of the discharge pipe (412) is connected to the discharge hole, and the discharge pipe (412) and the barrel (41) are fixed by welding.

5. The anti-glue overflow mechanism for a cardboard box pasting machine according to claim 4, characterized in that, Three sliding rods (432) are fixedly installed on the side of the first sealing plug (43) away from the push rod (42) along a circular array. A guide hole is provided on the cover (45) corresponding to the position of each sliding rod (432). The end of each sliding rod (432) away from the first sealing plug (43) slides through the corresponding guide hole.

6. The anti-glue overflow mechanism for a cardboard box pasting machine according to claim 1, characterized in that, The first sealing plug (43) has an insertion groove (433) on the side facing the cover (45), and the insertion groove (433) is a cylindrical groove adapted to the outer wall of the inner threaded sleeve (431).

7. The anti-glue overflow mechanism for a cardboard box pasting machine according to claim 1, characterized in that, The drive mechanism (3) includes a drive motor (31) and a double-acting screw (32). The drive motor (31) is fixedly installed on one side of the mounting bracket (1). One end of the double-acting screw (32) is connected to the output shaft of the drive motor (31) via a coupling. The other end of the double-acting screw (32) is rotatably installed on the mounting bracket (1) via a bearing seat. The slide (2) has a threaded hole that matches the double-acting screw (32). The slide (2) is threadedly connected to the double-acting screw (32) through the threaded hole.

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