A paperboard gluing device

Abstract

This utility model discloses a cardboard gluing device, including a gluing mechanism, a limiting mechanism, and a frame. The frame is equipped with a conveying mechanism and a working plate, which can be conveyed to the area below the gluing mechanism via the conveying mechanism. The gluing mechanism includes a glue box and a gluing head. The glue box is liftable and contains glue liquid. A glue outlet is located at the bottom of the glue box, and the gluing head is installed at the outlet. The limiting mechanisms are respectively located on both sides of the gluing mechanism to restrict the cardboard on the working plate from floating upwards when the working plate is in the gluing position. During use, the glue box is raised and lowered so that the gluing head at the bottom of the box contacts the cardboard, applying glue liquid to the cardboard. By setting the limiting mechanisms, when the glue box moves upwards after gluing, it can restrict the cardboard on the working plate from floating upwards, preventing the cardboard from sticking together and thus controlling the size of the gluing area. It can also adapt to gluing operations on cardboard of different thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of cardboard coating technology, and specifically to a cardboard coating device. Background Technology

[0002] Paperboard refers to sheets of paper made from various pulps, composed of interwoven fibers. During its development, paperboard has evolved into many types, such as corrugated paperboard and honeycomb paperboard. Paperboard is widely used in packaging engineering, and during production, it often needs to be glued to bond with other paperboards. Traditionally, glue was applied to the paperboard with a brush, which was inefficient and the amount of glue could not be controlled. With continuous technological advancements, roller-type glue coating equipment is now widely used. This involves contacting a roller soaked in glue with the paperboard to apply the glue. During this coating process, when the paperboard is thin or the glue viscosity is high, the paperboard may stick to the roller, causing parts of the paperboard to detach from the conveyor line and float upwards. As the paperboard continues to be conveyed forward, the actual glued area may become larger. Utility Model Content

[0003] The purpose of this invention is to provide a cardboard coating device that addresses the shortcomings of existing cardboard coating processes. This device can prevent cardboard from sticking together during the coating process, thereby effectively controlling the size of the coating area and adapting to coating operations on cardboard of different thicknesses.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model provides a cardboard coating device, including a coating mechanism, a limiting mechanism, and a frame; the frame is provided with a conveying mechanism and a working plate, and the working plate can be conveyed to the bottom of the coating mechanism via the conveying mechanism; the coating mechanism includes a glue box and a coating head, the glue box is liftable, the glue box contains glue liquid, the bottom of the glue box has a glue outlet, and the coating head is installed at the glue outlet; the limiting mechanism is respectively provided on both sides of the coating mechanism, and is used to limit the cardboard on the working plate from floating when the working plate is in the coating position.

[0006] As a preferred embodiment of this utility model, a plastic bag is provided inside the plastic box, the plastic bag contains adhesive liquid, and a glue outlet slit is opened at the bottom of the plastic bag, the glue outlet slit is opposite to the glue outlet at the bottom of the plastic box, and the adhesive liquid in the plastic bag can overflow from the glue outlet slit into the glue outlet under pressure.

[0007] As a preferred embodiment of this utility model, the glue box is provided with a pushing mechanism, which includes an electric push rod and a push plate. The electric push rod is located on the top of the glue box, and the push plate is located inside the glue box and on top of the glue bag. The output end of the electric push rod is connected to the push plate.

[0008] As a preferred embodiment of this utility model, the glue applicator includes a body and a coating part. The upper part of the body is connected to the glue outlet at the bottom of the glue box. The upper end of the body facing the glue outlet is recessed inward to form a glue guide groove. The coating part is disposed at the lower end of the body and covers the outlet of the glue guide groove. The glue can be applied to the cardboard from the glue outlet through the glue guide groove and the coating part.

[0009] As a preferred embodiment of this utility model, the lower part of the adhesive guide groove has a conical structure that is larger at the top and smaller at the bottom. A round rod is slidably disposed in the adhesive guide groove. The diameter of the round rod is slightly larger than the lower outlet of the adhesive guide groove. The coating part is made of a flexible material and covers the lower part of the round rod.

[0010] As a preferred embodiment of this utility model, the coating part is made of a sponge or gauze material that can be permeated with adhesive.

[0011] As a preferred embodiment of this utility model, a portal frame is provided on the frame, and the glue application mechanism and the limiting mechanism are both provided on the portal frame.

[0012] As a preferred embodiment of this utility model, a lifting cylinder is provided on the gantry frame, and the output end of the lifting cylinder is connected to the plastic box.

[0013] As a preferred embodiment of this utility model, the limiting mechanism includes a limiting cylinder, a guide sleeve, and a limiting rod. The limiting cylinder and the guide sleeve are both mounted on a fixed mounting base. The limiting rod slides vertically through the guide sleeve, and the output end of the limiting cylinder is connected to the upper end of the limiting rod.

[0014] As a preferred embodiment of this utility model, a limiting plate is provided at the lower end of the limiting rod, and the limiting plate is a detachable connection.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] In use, the cardboard to be coated is placed on the work plate and below the coating mechanism. The vertical position of the glue box is adjusted by the action of the lifting cylinder so that the coating head at the bottom of the glue box contacts the cardboard, thereby applying the glue to the cardboard. By setting limiting mechanisms on both sides of the coating mechanism, when the glue box moves upward after coating, the limiting mechanisms can prevent the cardboard on the work plate from floating upward, which can effectively prevent the cardboard from sticking together. This effectively controls the size of the coating area on the cardboard and can adapt to the coating operation of cardboard of different thicknesses. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a top view of the cardboard gluing device of this utility model;

[0019] Figure 2 This is a side view of the cardboard gluing device (hidden limiting mechanism) of this utility model;

[0020] Figure 3 This is a cross-sectional view of the plastic box in this utility model;

[0021] Figure 4 This is a cross-sectional view of the glue applicator in this utility model;

[0022] Figure 5 This is a schematic elevation view of the limiting mechanism in this utility model;

[0023] Figure 6 This is a cross-sectional schematic diagram of the limiting mechanism in this utility model.

[0024] The attached diagram shows the markings and corresponding component names:

[0025] 1-Frame, 11-Side plate, 12-End plate, 13-Adjustable support foot, 14-Conveyor roller, 15-Chain drive structure, 16-Drive motor, 2-Working plate, 3-Glue box, 31-Glue outlet, 4-Glue applicator head, 41-Main body, 42-Coating part, 43-Glue guide groove, 44-Round bar, 45-Thrust step, 5-Glue bag, 51-Glue outlet seam, 6-Electric push rod, 61-Push plate, 7-Gantry frame, 8-Lifting cylinder, 91-Limit cylinder, 92-Guide sleeve, 93-Limit rod, 94-Mounting base, 95-Limit plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0031] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0032] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces), unless otherwise explicitly specified.

[0033] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0035] Please refer to Figures 1 to 6 This application provides a cardboard coating device, including a coating mechanism, a limiting mechanism, and a frame 1. The frame 1 is equipped with a conveying mechanism and a working plate 2. The working plate 2 can be conveyed to the bottom of the coating mechanism via the conveying mechanism. The coating mechanism includes a glue box 3 and a coating head 4. The glue box 3 is liftable and contains glue liquid. The bottom of the glue box 3 has a glue outlet 31, and the coating head 4 is installed at the glue outlet 31. The limiting mechanism is respectively arranged on both sides of the coating mechanism to limit the cardboard on the working plate 2 from floating when the working plate 2 is in the coating position.

[0036] In this application, the cardboard to be coated is placed on the working plate 2, and the working plate 2 is positioned below the coating mechanism via a conveying mechanism. The vertical position of the glue box 3 is adjusted by lifting to bring the coating head 4 at the bottom of the glue box 3 into contact with the cardboard. The glue from the glue box 3 enters the coating head 4 through the glue outlet 31, thus applying the glue to the cardboard. Furthermore, the coating head 4 can be designed according to the shape and size of the coating area on the cardboard and connected to the glue outlet 31 at the bottom of the glue box 3, thus meeting the coating area requirements of different cardboards and making the device more flexible and versatile in use.

[0037] When the cardboard is thin or the adhesive has a high viscosity, the adhesive head 4 may stick to the cardboard as it moves upward, causing part of the cardboard to separate from the working plate 2 and float upward. As the working plate 2 continues to be conveyed forward, the cardboard and the adhesive head 4 move relative to each other, which in turn causes the actual adhesive area of ​​the cardboard to increase.

[0038] This application provides limiting mechanisms on both sides of the gluing mechanism. When the glue box 3 moves upward after the gluing is completed, the limiting mechanism can restrict the cardboard on the working plate 2 from floating upward, which can prevent the cardboard from sticking and thus effectively control the size of the cardboard gluing area. At the same time, it can adapt to the gluing operation of cardboard of different thicknesses.

[0039] According to some embodiments of this application, a plastic bag 5 is provided inside the plastic box 3. The plastic bag 5 contains adhesive liquid. A glue outlet slit 51 is opened at the bottom of the plastic bag 5. The glue outlet slit 51 is opposite to the glue outlet 31 at the bottom of the plastic box 3. Under pressure, the adhesive liquid in the plastic bag 5 can overflow from the glue outlet slit 51 and enter the glue outlet 31.

[0040] The plastic bag 5 in this application can be a rubber bag 5 or a silicone bag 5, and the length of the plastic bag 5 can be equivalent to the length of the plastic box 3. The adhesive is pre-filled in the plastic bag 5, and by opening an adhesive outlet 51 at the bottom of the plastic bag 5, by applying a certain pressure to the plastic bag 5, the adhesive in the plastic bag 5 can flow from the adhesive outlet 51 into the adhesive outlet 31 at the bottom of the plastic box 3.

[0041] The aforementioned glue box 3 is generally elongated, with a semi-circular curved lower inner wall. The top of the glue box 3 has a lid, which is fixedly connected to the top of the glue box 3 by multiple screws. The glue bag 5 can also be designed as an elongated shape, with its lower outer wall conforming to the inner wall of the glue box 3. This facilitates proper positioning of the glue bag 5 after it is placed inside the glue box 3, ensuring that the glue outlet 51 at the bottom of the glue bag 5 aligns with the glue outlet 31 at the bottom of the glue box 3.

[0042] The glue outlet slit 51 at the bottom of the plastic bag 5 can extend along the length of the plastic bag 5, and the length of the glue outlet slit 51 should be less than the length of the plastic bag 5. Specifically, the glue outlet slit 51 can be omitted near both ends of the plastic bag 5. When the plastic bag 5 is not subjected to external pressure, the glue outlet slit 51 at the bottom of the plastic bag 5 is in a closed state; when the plastic bag 5 is subjected to a certain external pressure, the glue outlet slit 51 at the bottom of the plastic bag 5 can open to allow the glue to overflow.

[0043] Because a plastic bag 5 is installed inside the plastic box 3, the adhesive is pre-filled in the plastic bag 5. When the adhesive in the plastic box 3 is used up, the lid on the top of the plastic box 3 can be opened and the plastic bag 5 can be replaced directly to add more adhesive, making it convenient to add adhesive.

[0044] According to some embodiments of this application, the glue box 3 is provided with a pushing mechanism, which includes an electric push rod 6 and a push plate 61. The electric push rod 6 is disposed on the top of the glue box 3, and the push plate 61 is disposed inside the glue box 3 and located on the top of the glue bag 5. The output end of the electric push rod 6 is connected to the push plate 61.

[0045] Specifically, there are two electric push rods 6, which are spaced apart along the length of the plastic bag 5. The electric push rod 6 is installed on the top of the plastic box 3. Its output end passes through the box cover and extends into the plastic box 3, and is connected to the push plate 61. The electric push rod 6 drives the push plate 61 to move downward, so that the plastic bag 5 is subjected to downward pressure, so that the glue in the plastic bag 5 can overflow from the glue outlet 51 at the bottom under pressure, so that the glue enters the glue outlet 31.

[0046] According to some embodiments of this application, the glue applicator 4 includes a body part 41 and a coating part 42. The upper part of the body part 41 is connected to the glue outlet 31 at the bottom of the glue box 3. A glue guide groove 43 is formed by recessing the upper end of the body part 41 facing the glue outlet 31. The coating part 42 is disposed at the lower end of the body part 41 and covers the outlet of the glue guide groove 43. The glue liquid can be applied to the cardboard after passing through the glue outlet 31, the glue guide groove 43, and the coating part 42.

[0047] In this application, the upper part of the body 41 of the glue applicator 4 is adapted to the glue outlet 31 at the bottom of the glue box 3, and a thrust step 45 is provided on the lower outer wall of the body 41, which can abut against the bottom end face of the glue box 3. One end of the glue guide groove 43 inside the body 41 communicates with the glue outlet 31 at the bottom of the glue box 3, and the other end communicates with the coating part 42. The glue overflowing from the glue outlet 51 at the bottom of the glue bag 5 can pass through the glue outlet 31, the glue guide groove 43, and the coating part 42 before being applied to the cardboard.

[0048] According to some embodiments of this application, the lower part of the adhesive guide groove 43 is a conical structure with a larger upper part and a smaller lower part. A round rod 44 is slidably disposed in the adhesive guide groove 43. The diameter of the round rod 44 is slightly larger than the lower end outlet of the adhesive guide groove 43. The coating part 42 is made of flexible material and covers the lower part of the round rod 44.

[0049] By setting a round rod 44 in the glue guide groove 43, the round rod 44 can close the lower outlet of the glue guide groove 43 by its own weight, thereby preventing the glue from entering the coating part 42. During glue application, the glue application head 4 moves down and contacts and presses against the cardboard, causing the coating part 42 to push the round rod 44 up, thereby opening the lower outlet of the glue guide groove 43 and allowing the glue to enter the coating part 42.

[0050] According to some embodiments of this application, the coating portion 42 is made of a sponge or gauze material that allows the adhesive to pass through. Using a sponge or gauze material of a certain thickness to manufacture the coating portion 42 gives it good porosity, facilitating the entry of the adhesive and also allowing it to absorb a certain amount of adhesive.

[0051] According to some embodiments of this application, a portal frame 7 is provided on the frame 1, and the glue application mechanism and the limiting mechanism are both provided on the portal frame 7. The lower ends of both sides of the portal frame 7 are respectively fixed to both sides of the frame 1.

[0052] According to some embodiments of this application, a lifting cylinder 8 is provided on the portal frame 7, and the output end of the lifting cylinder 8 is connected to the glue box 3. The output end of the lifting cylinder 8 can be connected to the top of the glue box 3, or it can be connected to the side of the glue box 3. By providing a lifting cylinder 8 on the portal frame 7, the extension and retraction of the lifting cylinder 8 can drive the glue box 3 to move up and down vertically, thereby adjusting the vertical position of the glue box 3 and causing the glue applicator 4 at the bottom of the glue box 3 to contact or separate from the cardboard.

[0053] According to some embodiments of this application, the limiting mechanism includes a limiting cylinder 91, a guide sleeve 92, and a limiting rod 93. The limiting cylinder 91 and the guide sleeve 92 are both mounted on a fixed mounting base 94. The limiting rod 93 slides vertically through the guide sleeve 92. The output end of the limiting cylinder 91 is connected to the upper end of the limiting rod 93.

[0054] The aforementioned mounting base 94 can be fixed to the side of the portal frame 7 with bolts. By setting the output end of the limit cylinder 91 to be connected to the upper end of the limit rod 93, the limit cylinder 91 can be used to extend and retract to drive the limit rod 93 to move up and down, thereby reducing the length of the limit cylinder 91. At the same time, the guide sleeve 92 can ensure the linearity of the up and down movement of the limit rod 93.

[0055] During the gluing process, the limiting cylinder 91 drives the limiting rod 93 to move downward along the guide sleeve 92, which can press the lower end of the limiting rod 93 against the cardboard, thereby preventing the cardboard on the working plate 2 from floating upward due to adhesion when the gluing head 4 moves upward. After the gluing head 4 separates from the cardboard, the limiting cylinder 91 drives the limiting rod 93 to move upward along the guide sleeve 92, and the working plate 2 continues to be conveyed forward.

[0056] This application provides limiting mechanisms on both sides of the gluing mechanism. When the glue box 3 moves upward after the gluing is completed, the limiting mechanism can restrict the cardboard on the working plate 2 from floating upward, which can prevent the cardboard from sticking and thus effectively control the size of the cardboard gluing area. At the same time, it can adapt to the gluing operation of cardboard of different thicknesses.

[0057] According to some embodiments of this application, a limiting plate 95 is provided at the lower end of the limiting rod 93, and the limiting plate 95 is detachably connected. By providing a limiting plate 95 at the lower end of the limiting rod 93, the contact area with the cardboard can be increased. Since the limiting plate 95 is detachably connected, it can be made of square rigid rubber or nylon, etc., and the shape and material of the limiting plate 95 can be designed as needed.

[0058] According to some embodiments of this application, the frame 1 includes two oppositely arranged side plates 11 and an end plate 12 connected to the ends of the two side plates 11. It also includes a plurality of adjustable support feet 13 disposed at the lower ends of the two side plates 11. The plurality of adjustable support feet 13 provide vertical support for the entire frame 1 and facilitate adjustment of the horizontal position of the frame 1.

[0059] According to some embodiments of this application, the conveying mechanism includes a plurality of conveying rollers 14 spaced apart between two side plates 11, and a transmission structure and a drive motor 16 disposed on the outside of one side plate 11. The two ends of the conveying rollers 14 are rotatably connected to the two side plates 11, and the transmission structure can be a chain drive structure 15.

[0060] Specifically, the aforementioned chain drive structure 15 includes a sprocket disposed at one end of the conveyor roller 14, and a chain mounted on multiple sprockets. A drive motor 16 drives the conveyor roller 14 to rotate via the chain drive structure 15, thereby conveying the work plate 2 forward. It should be noted that the aforementioned chain drive structure 15 is an existing technical method and will not be described in detail here.

[0061] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cardboard coating apparatus, characterized in that, The system includes a gluing mechanism, a limiting mechanism, and a frame. The frame is equipped with a conveying mechanism and a work plate, which can be conveyed to the area below the gluing mechanism via the conveying mechanism. The gluing mechanism includes a glue box and a gluing head. The glue box is height-adjustable and contains glue liquid. A glue outlet is located at the bottom of the glue box, and the gluing head is installed at the glue outlet. The limiting mechanisms are located on both sides of the gluing mechanism to restrict the cardboard on the work plate from floating upwards when the work plate is in the gluing position.

2. The cardboard coating apparatus according to claim 1, characterized in that, The glue box contains a glue bag filled with glue. The bottom of the glue bag has a glue outlet slit, which is opposite to the glue outlet at the bottom of the glue box. Under pressure, the glue in the glue bag can overflow from the glue outlet slit and enter the glue outlet.

3. The cardboard coating apparatus according to claim 2, characterized in that, The glue box is equipped with a pushing mechanism, which includes an electric push rod and a push plate. The electric push rod is located on the top of the glue box, and the push plate is located inside the glue box and on top of the glue bag. The output end of the electric push rod is connected to the push plate.

4. The cardboard coating apparatus according to claim 1, characterized in that, The glue applicator includes a body and a coating part. The upper part of the body is connected to the glue outlet at the bottom of the glue box. The upper end of the body facing the glue outlet is recessed inward to form a glue guide groove. The coating part is located at the lower end of the body and covers the outlet of the glue guide groove. The glue can be applied to the cardboard from the glue outlet through the glue guide groove and the coating part.

5. The cardboard coating apparatus according to claim 4, characterized in that, The lower part of the adhesive guide groove has a conical structure that is larger at the top and smaller at the bottom. A round rod is slidably disposed in the adhesive guide groove. The diameter of the round rod is slightly larger than the lower end outlet of the adhesive guide groove. The coating part is made of flexible material and covers the lower part of the round rod.

6. The cardboard coating apparatus according to claim 4, characterized in that, The coating is made of a sponge or gauze material that allows the adhesive to pass through.

7. The cardboard coating apparatus according to claim 1, characterized in that, A portal frame is provided on the frame, and the glue application mechanism and the limiting mechanism are both provided on the portal frame.

8. The cardboard coating apparatus according to claim 7, characterized in that, The gantry frame is equipped with a lifting cylinder, and the output end of the lifting cylinder is connected to the plastic box.

9. The cardboard coating apparatus according to claim 1, characterized in that, The limiting mechanism includes a limiting cylinder, a guide sleeve, and a limiting rod. The limiting cylinder and the guide sleeve are both mounted on a fixed mounting base. The limiting rod slides vertically through the guide sleeve. The output end of the limiting cylinder is connected to the upper end of the limiting rod.

10. The cardboard coating apparatus according to claim 9, characterized in that, The lower end of the limiting rod is provided with a limiting plate, which is a detachable connection.

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