A surface coating apparatus for high air permeability corrugated paperboard
By designing an adjustable spraying component, the problem of uneven coating of high-permeability corrugated cardboard was solved, achieving uniform coating of flute peaks and valleys, thus improving coating quality and equipment maintenance efficiency.
Patent Information
- Application Number
- CN202521977106.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-15
AI Technical Summary
The existing high-permeability corrugated cardboard coating equipment has a fixed spray angle, which leads to uneven coating and makes it difficult to meet the coating needs of different areas, affecting the air permeability and coating effect.
An adjustable spraying angle spraying assembly was designed, including a rotating support and a spraying body. The angle is adjusted by a threaded connection and equipped with a limiting groove and a sealing ring to ensure stability. The nozzle is detachable for easy replacement and maintenance.
It achieves uniform coating of the flute peaks and valleys of high-permeability corrugated cardboard, improving coating quality, simplifying equipment maintenance procedures, and increasing production efficiency and ease of use.
Smart Images
Figure CN224672987U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of corrugated paper processing technology, and in particular relates to a surface coating device for highly permeable corrugated cardboard. Background Technology
[0002] In industries such as packaging and logistics, high-permeability corrugated cardboard is increasingly widely used due to its excellent air permeability, lightweight properties, and certain structural strength. To further improve the waterproof, moisture-proof, and abrasion-resistant properties of high-permeability corrugated cardboard, its surface is usually coated, such as with waterproofing agents or abrasion-resistant coatings.
[0003] Currently, there are many types of equipment on the market for coating the surface of corrugated cardboard. However, there are many shortcomings in the special coating equipment for high-permeability corrugated cardboard. The spraying components of traditional coating equipment are mostly fixed structures, and the spraying angle cannot be flexibly adjusted. When it is necessary to coat different areas of the corrugated cardboard (such as flute peaks and flute valleys) in a targeted manner, it is difficult to ensure the uniformity of coating. It is easy to have local coating that is too thick or missed, which affects the air permeability and coating effect of the corrugated cardboard. Utility Model Content
[0004] The purpose of this invention is to address the aforementioned technical problems by providing a surface coating device for highly permeable corrugated cardboard, thereby resolving the issues raised in the background section.
[0005] In view of this, the present invention provides a surface coating device for highly breathable corrugated cardboard, wherein a conveyor belt is provided on the base; The housing is provided on the upper surface of the base; A spraying assembly is installed inside the housing; The spraying components include: The housing has several conveying pipes at its top, and each conveying pipe passes through the housing. Supply pipe, one side of multiple delivery pipes is connected to the supply pipe; The connecting cylinder has several connecting cylinders that communicate with the conveying pipe fixedly installed on the inner wall of the upper end of the shell; The ejector body is threadedly connected to the outside of the connecting cylinder, and the ejector body has an adjustable spray angle.
[0006] In the above technical solution, the ejector further includes: A rotating support body is threaded to the outer wall of the connecting cylinder. The rotating support body has a through hole along the length of the conveying pipe. The rotating support body includes a connecting pipe and a spherical support body. The inner side of the connecting pipe is provided with an internal thread for threaded connection with the outer wall of the connecting cylinder. A rotating cap is used to accommodate and engage a spherical support. The rotating cap includes a cap tube, an engaging groove, and a sealing ring. The cap tube has a connecting hole that is aligned with the through hole. The engaging groove is formed by protruding inward at the upper end of the cap tube. The sealing ring is located inside the engaging groove, and the surface of the sealing ring is in close contact with the surface of the spherical support to achieve a seal. The lower end of the cap tube also has an internal thread. The connector has an external thread on its upper outer wall. The connector is threaded to the internal thread on the lower inner side of the cap tube through the external thread. The connector also has a straight hole that is connected to the connecting hole in the same straight line. The connector has a nozzle interface at the front end. Several discharge holes are opened on the nozzle interface along the horizontal circumference. The nozzle is connected to the lower part of the connector.
[0007] In the above technical solution, a stabilizing block is further provided at the upper end of the connector. The stabilizing block has an arc-shaped groove that fits tightly with the spherical support and an intermediate hole that communicates with the through hole.
[0008] Furthermore, in the above technical solution, a sealing ring is provided between the cap tube and the connecting body.
[0009] In the above technical solution, a limiting groove is further provided at the bottom of the stabilizing block, and a limiting ring adapted to the limiting groove is provided at the top of the connecting body.
[0010] In the above technical solution, the nozzle further includes a connector and an outer cap. The connector is connected to the outer thread in the middle of the outer wall of the connector through an internal thread on its inner wall. The nozzle interface extends into the outer cap.
[0011] In the above technical solution, furthermore, rectangular grooves are provided on both sides of the shell, and door panels are hinged to the rectangular grooves.
[0012] In the above technical solution, furthermore, several support columns are fixedly connected to the bottom of the base.
[0013] The beneficial effects of this utility model are as follows: 1. The spray angle of the nozzle can be precisely adjusted according to the flute structure and coating requirements of the high-permeability corrugated cardboard, ensuring that the coating material can evenly cover all areas of the flute, such as the flute peaks and valleys. This effectively avoids the problem of uneven coating caused by the fixed spray angle of traditional equipment and significantly improves the coating quality of high-permeability corrugated cardboard.
[0014] 2. When it is necessary to change the type of coating material, clean the inside of the spraying components, or replace damaged parts, operators can quickly disassemble and assemble the parts without complicated tools and cumbersome procedures, which greatly shortens maintenance time and improves the production efficiency and ease of use of the equipment.
[0015] 3. The combination of the limiting groove and the limiting ring can limit the relative position between the stabilizing block and the connecting body, prevent the stabilizing block from shifting during equipment operation, and further improve the overall stability of the jet body structure. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a schematic diagram of the ejector structure of this utility model; Figure 5 This is an exploded exploded diagram of the projectile of this utility model; The markings in the diagram are as follows: 1-base, 2-conveyor belt, 3-shell, 4-conveying pipe, 5-supply pipe, 6-connecting cylinder, 7-jet body, 8-rotating support body, 9-through hole, 10-connecting pipe, 11-spherical support body, 12-rotating cap, 13-cap tube, 14-locking groove, 15-sealing ring, 16-connecting hole, 17-connecting body, 18-straight hole, 19-nozzle interface, 20-discharge hole, 21-nozzle, 22-stabilizing block, 23-arc groove, 24-intermediate hole, 25-sealing ring, 26-limiting groove, 27-limiting ring, 28-connecting port, 29-outer cap, 30-door panel, 31-support column. Detailed Implementation
[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0018] Example 1: This embodiment provides a surface coating device for high-permeability corrugated cardboard, including: Base 1, with conveyor belt 2 mounted on base 1; The housing 3 is provided on the upper surface of the base 1; A spraying assembly is installed inside the housing 3; The spraying components include: The top of the housing 3 is provided with several conveying pipes 4, and each conveying pipe 4 passes through the housing 3; Supply pipe 5, one side of multiple conveying pipes 4 is connected to supply pipe 5; Connecting cylinder 6, several connecting cylinders 6 that communicate with conveying pipe 4 are fixedly installed on the inner wall of the upper end of the housing 3; The ejector body 7 is threadedly connected to the outside of the connecting cylinder 6, and the ejector body 7 can adjust the ejection angle.
[0019] As can be seen in this embodiment, the base 1 serves as the supporting foundation for the equipment, made of high-strength metal to ensure the overall stability of the equipment. A conveyor belt 2 is mounted on the base 1, made of wear-resistant and high-temperature-resistant rubber. Its transmission speed can be adjusted by an external control system (adjustment range: 0.5-2 m / s), used to smoothly and uniformly transport the high-permeability corrugated cardboard to be coated to the spraying area within the housing 3, ensuring the continuity and stability of the coating process. The housing 3 is fixedly installed on the upper surface of the base 1. The housing 3 adopts a closed structure, welded from metal plates, with an anti-corrosion and easy-to-clean polytetrafluoroethylene coating on the inner wall for easy subsequent equipment cleaning. Rectangular grooves are provided on both sides of the housing 3, the size of which matches the width of the conveyor belt 2 to ensure smooth entry and exit of the corrugated cardboard. A spraying assembly is installed inside the housing 3 to uniformly spray the coating material onto the surface of the high-permeability corrugated cardboard. The spraying assembly includes a conveying pipe 4, a supply pipe 5, a connecting cylinder 6, and a spray body 7. Several conveying pipes 4 are evenly arranged along the width direction of the conveyor belt 2 on the top of the housing 3 (the number is determined according to the actual coating width, usually 3-8). Each delivery pipe 4 passes vertically through the top of the housing 3 and is sealed to the top of the housing 3 by a sealing sleeve to prevent leakage of coating material. One side of the multiple delivery pipes 4 is connected to a supply pipe 5. One end of the supply pipe 5 is connected to an external coating material storage tank and a delivery pump. Under the action of the delivery pump, the coating material is distributed to each delivery pipe 4 through the supply pipe 5 and then delivered to the subsequent spraying structure. Several connecting cylinders 6 are fixedly installed on the inner wall of the upper end of the housing 3. The connecting cylinders 6 correspond one-to-one with the delivery pipes 4 and are internally connected. The connecting cylinders 6 are made of metal and have external threads on the outer side of their lower end for connection with the spray body 7, providing a stable installation base for the spray body 7. The spray body 7 can flexibly adjust the spraying angle and can perform targeted coating on different areas of the corrugated cardboard (such as flute peaks and flute valleys) to ensure that the coating material evenly covers the surface of the highly permeable corrugated cardboard.
[0020] Example 2: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0021] The ejector 7 includes: Rotary support 8 is threaded to the outer wall of connecting cylinder 6. Rotary support 8 has a through hole 9 along the length of conveying pipe 4. Rotary support 8 includes connecting pipe 10 and spherical support 11. The inner side of connecting pipe 10 is provided with internal thread for threaded connection to the outer wall of connecting cylinder 6. The rotating cap 12 is used to accommodate and engage the spherical support 11. The rotating cap 12 includes a cap tube 13, an engaging groove 14, and a sealing ring 15. The cap tube 13 has a connecting hole 16 that is aligned with the through hole 9. The engaging groove 14 is formed by protruding inward at the upper end of the cap tube 13. The sealing ring 15 is located inside the engaging groove 14, and the surface of the sealing ring 15 is tightly fitted with the surface of the spherical support 11 to achieve a seal. The lower end of the cap tube 13 is also provided with an internal thread. The connector 17 has an external thread on its upper outer wall. The connector 17 is threaded to the internal thread on the lower inner side of the cap tube 13 through the external thread. The connector 17 also has a straight hole 18 that is connected to the connecting hole 16 in the same straight line. The connector 17 has a nozzle interface 19 at its front end. The nozzle interface 19 has several discharge holes 20 circumferentially opened along the horizontal direction. Nozzle 21 is connected to the lower part of connector 17.
[0022] As can be seen in this embodiment, the rotating support 8 is threadedly connected to the outer wall of the connecting cylinder 6, and a through hole 9 is provided along the length of the conveying pipe 4. The coating material can enter the subsequent structure through the through hole 9. The rotating support 8 is integrally formed by the connecting pipe 10 and the spherical support 11. The inner side of the connecting pipe 10 is provided with an internal thread, which is adapted to the external thread of the outer wall of the connecting cylinder 6, so as to realize the detachable connection between the rotating support 8 and the connecting cylinder 6. The spherical support 11 has a spherical structure and provides a rotating support base for the rotating cap 12. Its surface is precision polished to reduce the rotational friction resistance. The rotating cap 12 is used to accommodate and engage the spherical support 11, and can rotate 360° around the spherical support 11, thereby driving the subsequent components to adjust the spray angle. The rotating cap 12 includes a cap tube 13, an engaging groove 14 and a sealing ring 15. A connecting hole 16 is provided on the cap tube 13, which is in line with the through hole 9 to ensure smooth flow of the coating material. The engaging groove 14 is formed by protruding inward at the upper end of the cap tube 13, and its shape is similar to that of the cap tube 13. The spherical support 11 is surface-fitted to limit its position and prevent the rotating cap 12 from falling off. The sealing ring 15 is made of elastic rubber and is located inside the locking groove 14. The surface of the sealing ring 15 is in close contact with the surface of the spherical support 11 to achieve a seal between the rotating support 8 and the rotating cap 12, preventing the coating material from leaking from the gaps. In addition, the lower end of the cap tube 13 is provided with an internal thread for connection with the connector 17. The upper outer wall of the connector 17 is provided with an external thread, which is threaded to the internal thread on the lower end of the cap tube 13, achieving a detachable connection between the connector 17 and the rotating cap 12, facilitating subsequent maintenance and replacement of parts. The connector 17 has a straight hole 18 that is aligned with the connecting hole 16. The coating material is sequentially conveyed to the nozzle 21 through the through hole 9, the connecting hole 16, and the straight hole 18. The front end of the connector 17 is provided with a nozzle interface 19, on which several discharge holes 20 (usually 4-8) are provided along the horizontal circumference. The discharge hole 20 allows the coating material to be initially dispersed before entering the nozzle 21, improving the uniformity of subsequent spraying. The nozzle 21 is connected below the connector 17. The nozzle 21 is made of wear-resistant ceramic material, which has good corrosion resistance and wear resistance, and extends its service life. It is evenly sprayed onto the surface of the high-permeability corrugated cardboard through the spray port of the outer cap 29.
[0023] Operators can precisely adjust the spray angle of nozzle 21 according to the flute structure and coating requirements of the high-permeability corrugated cardboard, ensuring that the coating material can evenly cover all areas of the flute, such as the flute peaks and valleys. This effectively avoids the problem of uneven coating caused by the fixed spray angle in traditional equipment and significantly improves the coating quality of the high-permeability corrugated cardboard.
[0024] Most of the components of the spraying assembly are connected by threads. For example, the rotating support 8 and the connecting cylinder 6, the connecting body 17 and the cap tube 13, and the nozzle 21 and the connecting body 17 are all detachable. When it is necessary to change the type of coating material, clean the inside of the spraying assembly, or replace damaged parts, the operator can quickly complete the disassembly and assembly of the parts without complicated tools and cumbersome procedures, which greatly shortens the maintenance time and improves the production efficiency and ease of use of the equipment.
[0025] Example 3: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0026] The upper end of the connector 17 is provided with a stabilizing block 22. The stabilizing block 22 has an arc-shaped groove 23 that fits tightly with the spherical support 11 and an intermediate hole 24 that communicates with the through hole 9.
[0027] As can be seen in this embodiment, a stabilizing block 22 is provided at the upper end of the connector 17. The stabilizing block 22 is made of Teflon material and has an arc-shaped groove 23 that fits tightly with the spherical support 11 and an intermediate hole 24 that communicates with the through hole 9. The fitting design of the arc-shaped groove 23 with the surface of the spherical support 11 can play an auxiliary support role for the spherical support 11, reduce the shaking of the spherical support 11 during rotation, and improve the stability of the spray angle adjustment. The intermediate hole 24 ensures the normal flow of the coating material and does not affect the spraying efficiency.
[0028] Example 4: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0029] A sealing ring 25 is provided between the cap tube 13 and the connector 17.
[0030] As can be seen from this embodiment, a sealing ring 25 is provided between the cap tube 13 and the connector 17. The sealing ring 25 is made of fluororubber material that is resistant to high temperature and chemical corrosion, which can effectively enhance the sealing performance between the cap tube 13 and the connector 17, prevent the coating material from leaking from the connection gap between the two, and reduce material waste and equipment pollution.
[0031] Example 5: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0032] The bottom of the stabilizing block 22 has a limiting groove 26, and the top of the connecting body 17 is provided with a limiting ring 27 that is adapted to the limiting groove 26.
[0033] As can be seen from this embodiment, a limiting groove 26 is provided at the bottom of the stabilizing block 22, and a limiting ring 27 adapted to the limiting groove 26 is provided at the top of the connecting body 17. The cooperation between the limiting groove 26 and the limiting ring 27 can limit the relative position between the stabilizing block 22 and the connecting body 17, prevent the stabilizing block 22 from shifting during equipment operation, and further improve the overall stability of the jet body 7.
[0034] Example 6: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0035] The nozzle 21 includes a connector 28 and an outer cap 29. The connector 28 is connected to the external thread provided in the middle of the outer wall of the connector 17 through an internal thread provided in its inner wall. The nozzle interface 19 extends into the outer cap 29.
[0036] As can be seen in this embodiment, the nozzle 21 includes a connection port 28 and an outer cap 29. The connection port 28 is connected to the external thread in the middle of the outer wall of the connector 17 through the internal thread provided on its inner wall, so as to realize the detachable connection between the nozzle 21 and the connector 17. This makes it easy to replace the nozzle 21 with different specifications (such as different spray diameters and spray modes) according to the coating requirements. The nozzle interface 19 extends into the inner part of the outer cap 29. The coating material enters the outer cap 29 through the nozzle interface 19 and is then evenly sprayed onto the surface of the high-permeability corrugated cardboard through the spray port of the outer cap 29.
[0037] Example 7: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0038] Rectangular slots are provided on both sides of the housing 3, and door panels 30 are hinged to the rectangular slots.
[0039] As can be seen in this embodiment, rectangular slots are provided on both sides of the housing 3, and door panels 30 are hinged to the rectangular slots. The door panels 30 are made of transparent tempered glass, and the operator can observe the coating process inside the housing through the door panels 30 and detect coating abnormalities in a timely manner. A sealing strip is provided between the door panel 30 and the edge of the rectangular slot. When the door panel 30 is closed, it can effectively prevent the coating material from splashing to the outside of the housing, avoiding environmental pollution and material waste. Moreover, when it is necessary to perform targeted coating on different areas of the corrugated cardboard (such as flute peaks and flute valleys), the angle of the nozzle 21 can be adjusted by opening the door panel 30 to ensure coating uniformity.
[0040] Example 8: This embodiment provides a surface coating device for highly permeable corrugated cardboard, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0041] The base 1 has several support columns 31 fixedly connected to its bottom.
[0042] As can be seen in this embodiment, several support columns 31 are fixedly connected to the bottom of the base 1. The height of the support columns 31 can be finely adjusted according to actual production needs (adjustment range is 5-10cm) to adjust the overall height of the equipment, adapt to production lines or operating platforms of different heights, and enhance the versatility of the equipment. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many other forms without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.
Claims
1. A surface coating device for high-permeability corrugated cardboard, characterized in that, include: A base (1) is provided with a conveyor belt (2); The housing (3) is provided on the upper surface of the base (1); A spraying assembly is provided inside the housing (3); The spraying components include: Delivery pipe (4), a plurality of delivery pipes (4) are provided on the top of the housing (3), and each delivery pipe (4) passes through the housing (3); Supply pipe (5), one side of the plurality of conveying pipes (4) is connected to the supply pipe (5); Connecting cylinder (6): Several connecting cylinders (6) that communicate with the conveying pipe (4) are fixedly provided on the inner wall of the upper end of the housing (3). The ejector (7) is threadedly connected to the outside of the connecting cylinder (6), and the ejector (7) can adjust the ejection angle.
2. The surface coating equipment for high-permeability corrugated cardboard according to claim 1, characterized in that, The ejector (7) includes: Rotary support (8), the rotary support (8) is threaded to the outer wall of the connecting cylinder (6), the rotary support (8) has a through hole (9) along the length of the conveying pipe (4), the rotary support (8) includes a connecting pipe (10) and a spherical support (11), wherein the inner side of the connecting pipe (10) is provided with an internal thread for threaded connection to the outer wall of the connecting cylinder (6); Rotary cap (12), the rotary cap (12) is used to accommodate and engage the spherical support (11). The rotary cap (12) includes a cap tube (13), an engaging groove (14) and a sealing ring (15). The cap tube (13) is provided with a connecting hole (16) that is connected to the through hole (9) in the same straight line. The engaging groove (14) is formed by protruding inward at the upper end of the cap tube (13). The sealing ring (15) is provided inside the engaging groove (14), and the surface of the sealing ring (15) is tightly fitted with the surface of the spherical support (11) to achieve sealing. The lower end of the cap tube (13) is also provided with an internal thread. The connector (17) has an external thread on its upper outer wall. The connector (17) is threaded to the inner thread on the lower inner side of the cap tube (13) through the external thread. The connector (17) has a straight hole (18) that is connected to the connecting hole (16) in the same straight line. The connector (17) has a nozzle interface (19) at its front end. The nozzle interface (19) has several discharge holes (20) circumferentially arranged along the horizontal direction. Nozzle (21), the nozzle (21) is connected below the connector (17).
3. The surface coating equipment for high-permeability corrugated cardboard according to claim 2, characterized in that, The upper end of the connector (17) is provided with a stabilizing block (22), which has an arc groove (23) that fits tightly with the spherical support (11) and an intermediate hole (24) that communicates with the through hole (9).
4. The surface coating equipment for high-permeability corrugated cardboard according to claim 2, characterized in that, A sealing ring (25) is provided between the cap tube (13) and the connector (17).
5. The surface coating equipment for high-permeability corrugated cardboard according to claim 3, characterized in that, The bottom of the stabilizing block (22) has a limiting groove (26), and the top of the connecting body (17) is provided with a limiting ring (27) that is compatible with the limiting groove (26).
6. The surface coating equipment for high-permeability corrugated cardboard according to claim 2, characterized in that, The nozzle (21) includes a connector (28) and an outer cap (29). The connector (28) is connected to the outer thread provided in the middle of the outer wall of the connector (17) through the internal thread provided in its inner wall. The nozzle interface (19) extends into the inner part of the outer cap (29).
7. The surface coating equipment for high-permeability corrugated cardboard according to claim 1, characterized in that, The shell (3) has rectangular slots on both sides, and door panels (30) are hinged to the rectangular slots.
8. The surface coating equipment for high-permeability corrugated cardboard according to claim 1, characterized in that, The base (1) has several support columns (31) fixedly connected to its bottom.