Coating assembly and packaging turnover composite film preparation device and method

Abstract

The present application relates to the technical field of packaging turnover composite film, in particular to a coating assembly, a packaging turnover composite film preparation device and a method. The coating assembly comprises an assembly main body, a main flow channel is formed in the assembly main body; the main flow channel has a feeding section, a buffering section and a discharging section arranged in sequence, the discharging section extends in the transverse direction to form a slit-shaped structure for cooperating with a body to be coated; an equalizing mechanism is arranged between the buffering section and the discharging section, the equalizing mechanism comprises a plurality of equalizing flow channels arranged continuously along the transverse direction, the equalizing flow channels extend from the side wall of the buffering section to the side wall of the discharging section; the equalizing plates are hingedly arranged between the adjacent two equalizing flow channels corresponding to the discharging section, and the equalizing plates are used to rotate under the action of the fluid in the corresponding equalizing flow channels. The preparation device comprises the above-mentioned coating assembly, and the preparation method is realized by using the above-mentioned coating device. The present application can realize efficient glue coating and composite preparation of the packaging turnover composite film, and improve the production efficiency of the packaging turnover composite film.

Description

Technical Field

[0001] This invention relates to the field of packaging turnover composite film technology, and more specifically, to a coating component and a packaging turnover composite film preparation apparatus and method. Background Technology

[0002] Packaging turnover composite film is a composite film used for packaging turnover, which is made of multiple layers of materials bonded together. Before lamination, liquid adhesive is applied to the surface of the materials. Currently, the commonly used liquid adhesive coating equipment is mainly a slot coater. However, due to the uneven flow rate at different points in the slot during coating, this equipment is prone to uneven application of liquid adhesive to the surface of the material to be coated. Summary of the Invention

[0003] This invention provides a coating component and a method for preparing packaging turnover composite film, which can overcome some or all the defects of the prior art.

[0004] According to the coating assembly of the present invention, it includes: an assembly body, in which a main channel is formed; the main channel has a feed section, a buffer section and a discharge section arranged sequentially, the discharge section extending laterally to form a slit shape for cooperating with the body to be coated; an equalization mechanism is provided between the buffer section and the discharge section, the equalization mechanism including a plurality of equalization channels arranged continuously in the transverse direction, the equalization channels extending from the sidewall of the buffer section to the sidewall of the discharge section; an equalization plate is hinged between two adjacent equalization channels in the discharge section, the hinge axis of the equalization plate extending along the flow direction of the discharge section; the equalization plate is used to rotate under the action of the fluid in the corresponding equalization channel.

[0005] In this invention, liquid adhesive flows through the main channel to the object to be coated, thus achieving better coating of the object's surface. The feeding section conveys the liquid adhesive to the buffer section, which accumulates the liquid adhesive to ensure it enters the discharge section more evenly. The slit at the discharge section is used to coat the object's surface with liquid adhesive; by forming the slit, the liquid adhesive can be released more effectively. The equalization channel senses the fluid flow rate at its corresponding location, thus better reflecting the flow rate at the corresponding position of the slit. The rotating equalization plate can control its orientation according to the fluid flow rate, thus better adjusting the fluid flow rate at the corresponding position within the slit, thereby better adjusting the flow rate at each corresponding position of the slit, enabling the discharge section to achieve uniform discharge.

[0006] Preferably, the component body includes a first body and a second body that cooperate with each other. The first body forms a groove laterally, and the second body forms a corresponding protrusion. The sidewall of the groove and the sidewall of the protrusion together form a feeding section, and the bottom surface of the protrusion and the bottom surface of the groove together form a buffer section.

[0007] In this invention, by setting a first body and a second body, the disassembly and assembly of the component body and the cleaning of the internal liquid adhesive are better facilitated, and the solidification and blockage of the main channel by the liquid adhesive are better prevented.

[0008] Preferably, the equalization channel includes an induction channel formed in the first body parallel to the discharge section, and multiple equalization chambers connected to the buffer section and the discharge section, with the equalization chambers spaced apart between two adjacent induction channels.

[0009] In this invention, by setting a sensing channel, the flow rate at the corresponding buffer cavity can be better sensed, thereby objectively reflecting the flow rate at the corresponding slit. By setting an equalization cavity, the comparison between two adjacent sensing channels is better realized.

[0010] Preferably, the sidewall of the equalization plate forms a first arc surface, and the equalization cavity forms a corresponding second arc surface, with the first arc surface and the second arc surface rotating together.

[0011] In this invention, by setting a first arc surface and a second arc surface, a tight fit between the equalization plate and the equalization cavity is preferably achieved.

[0012] Preferably, two sensing holes are formed at intervals on the side wall of the sensing channel, and the two sensing holes are respectively connected to the corresponding adjacent equalization cavities. Two matching cavities are provided at the equalization plate, and the two matching cavities are connected to the two sensing holes.

[0013] In this invention, by setting a sensing hole, the liquid in the sensing channel can be better circulated to the mating cavity. By setting a mating cavity, the flow rate change can be better reflected, thereby causing the equalization plate to rotate.

[0014] Preferably, the equalization chamber forms mounting grooves at both ends along the flow direction of the discharge section, and mounting blocks are provided in the mounting grooves. The mounting blocks form a mating surface facing the equalization plate, and a hinge hole is formed at the mating surface. The hinge hole is rotatably engaged with the hinge shaft.

[0015] In this invention, by setting the mounting groove and mounting block, the cooperation between the equalization plate and the equalization cavity is preferably achieved. By setting the hinge hole, the cooperation with the hinge shaft is preferably achieved, thus the rotation of the equalization plate is preferably achieved.

[0016] Preferably, a limiting groove is formed at the mating surface, and a corresponding limiting post is formed at the equalization plate, with the limiting groove and the limiting post slidingly engaged.

[0017] In this invention, by setting a limiting post and a limiting groove, the angular range of the equalization plate rotation is better limited, thereby better preventing the liquid glue in the equalization cavity from flowing into the slit.

[0018] Preferably, the main body of the component has two sealing plates at both ends along its length, and multiple locking elements are evenly distributed on the two sealing plates. The multiple locking elements pass through the corresponding sealing plates and are threadedly engaged with the main body of the component.

[0019] In this invention, by setting a blocking plate, the blocking of both sides of the main channel is preferably achieved, and by setting a locking component, the cooperation between the blocking plate and the main body of the component is preferably achieved.

[0020] According to an apparatus for preparing a packaging turnover composite film, the above-mentioned coating component is included.

[0021] According to a method for preparing a packaging turnover composite film according to the present invention, the above-mentioned packaging turnover composite film preparation device is used. Attached Figure Description

[0022] Figure 1 This is an isometric view of the coating assembly in Example 1;

[0023] Figure 2 This is a schematic front view of the coating assembly in Example 1;

[0024] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0025] Figure 4 This is an exploded view of the coating assembly in Example 1;

[0026] Figure 5 This is a schematic diagram of the first main body in Example 1, showing a half-section view.

[0027] Figure 6 This is a schematic diagram of the mounting block from the axial side in Example 1;

[0028] Figure 7 This is a schematic diagram of the axial side of the equalization plate in Example 1. Detailed Implementation

[0029] To further understand the content of this invention, the invention will be described in detail with reference to the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0030] Example 1

[0031] Seen in Figure 1-7This embodiment provides a coating assembly, which includes an assembly body 100, within which a main channel 110 is formed. The main channel 110 has a feed section 311, a buffer section 312, and a discharge section 313 arranged sequentially. The discharge section 313 extends laterally to form a slit shape for cooperating with the body to be coated. An equalization mechanism 320 is provided between the buffer section 312 and the discharge section 313. The equalization mechanism 320 includes a plurality of equalization channels 421 arranged continuously in the transverse direction. The equalization channels 421 extend from the sidewall of the buffer section 312 to the sidewall of the discharge section 313. An equalization plate 422 is hinged between two adjacent equalization channels 421 in the discharge section 313. The hinge axis 7225 of the equalization plate 422 extends along the flow direction of the discharge section 313. The equalization plate 422 is used to rotate under the action of the fluid in the corresponding equalization channel 421.

[0032] The solution provided in this embodiment allows the liquid adhesive to flow through the main channel 110 to the object to be coated, thus achieving better coating of the surface of the object and facilitating the lamination of the packaging turnover composite film. The feeding section 311 is used to transport the liquid adhesive to the buffer section 312, which is used to accumulate the liquid adhesive so that it enters the discharge section 313 more evenly. The slit at the discharge section 313 is used to coat the surface of the object to be coated with liquid adhesive. By forming the slit, the liquid adhesive can be released more effectively. The equalization channel 421 is used to sense the fluid flow rate at its corresponding location, thus better reflecting the flow rate at the corresponding position of the slit. The rotating equalization plate 422 can control its orientation according to the fluid flow rate, thus better adjusting the fluid flow rate at the corresponding position in the slit, thereby better adjusting the flow rate at each corresponding position in the slit, so that the discharge section 313 can achieve uniform discharge.

[0033] When using this coating assembly, the liquid adhesive first enters the buffer section 312 from the feed section 311, accumulates in the buffer section 312 and enters the equalization channel 421, then the liquid adhesive enters the discharge section 313 from the buffer section 312 and finally flows out of the discharge section 313 to the object to be coated.

[0034] Seen in Figure 1-4 In this embodiment, the main body 100 includes a first main body 101 and a second main body 102 that cooperate with each other. The first main body 101 forms a groove 4011 laterally, and the second main body 102 forms a corresponding protrusion 4021. The sidewall of the groove 4011 and the sidewall of the protrusion 4021 together form a feeding section 311, and the bottom surface of the protrusion 4021 and the bottom surface of the groove 4011 together form a buffer section 312.

[0035] By setting up the first main body 101 and the second main body 102, the assembly and disassembly of the component main body 100 and the cleaning of the internal liquid adhesive are better facilitated, and the liquid adhesive is better prevented from solidifying and clogging the main channel 110.

[0036] In this embodiment, the equalization channel 421 includes an induction channel 5211 formed in the first body 101 parallel to the discharge section 313, and a plurality of equalization cavities 5212 that are parallel to the buffer section 312 and communicate with the discharge section 313. The equalization cavities 5212 are spaced apart between two adjacent induction channels 5211.

[0037] The induction channel 5211 can better sense the flow rate at the corresponding buffer cavity, thereby objectively reflecting the flow rate at the corresponding slit. The equalization cavity 5212 can better realize the comparison between two adjacent induction channels 5211.

[0038] Seen in Figure 4-7 In this embodiment, the sidewall of the equalization plate 422 forms a first arc surface 7221, and the equalization cavity 5212 forms a corresponding second arc surface 5214. The first arc surface 7221 and the second arc surface 5214 are rotated together.

[0039] By setting the first arc surface 7221 and the second arc surface 5214, a tight fit between the equalization plate 422 and the equalization cavity 5212 is better achieved.

[0040] Seen in Figure 4-7 In this embodiment, two sensing holes 5213 are formed at intervals on the side wall of the sensing channel 5211. The two sensing holes 5213 are respectively connected to the corresponding adjacent equalization cavity 5212. Two matching cavities 7222 are provided at the equalization plate 422. The two matching cavities 7222 are connected to the two sensing holes 5213.

[0041] By setting the sensing hole 5213, the liquid in the sensing channel can be better circulated to the mating cavity 7222. By setting the mating cavity 7222, the flow rate change can be better reflected, thereby causing the equalization plate 422 to rotate.

[0042] It is understandable that when the flow rate at adjacent sensing channels A and B is greater than that at B, the pressure in the corresponding mating cavity 7222 at A is greater than that in the corresponding mating cavity 7222 at B. Therefore, the equalizing plate 422 deflects towards B, thereby reducing the cross-sectional area of ​​the slit at A and increasing the cross-sectional area of ​​the slit at B, thus achieving the effect of reducing the flow rate at A and increasing the flow rate at B.

[0043] Through the above methods, a better balance of flow rate was achieved throughout the slit.

[0044] Seen in Figure 4-6In this embodiment, the equalization cavity 5212 forms mounting grooves 524 at both ends along the flow direction of the discharge section 313. The mounting groove 524 is provided with mounting blocks 423. The mounting blocks 423 form a mating surface 7223 on the side facing the equalization plate 422. A hinge hole 6231 is formed at the mating surface 7223. The hinge hole 6231 is rotatably engaged with the hinge shaft 7225.

[0045] The installation groove 524 and the installation block 423 are provided to better achieve the cooperation between the equalization plate 422 and the equalization cavity 5212. The hinge hole 6231 is provided to better cooperate with the hinge shaft 7225, thus better achieving the rotation of the equalization plate 422.

[0046] Seen in Figure 6-7 In this embodiment, a limiting groove 6232 is also formed at the mating surface 7223, and a limiting post 7224 is correspondingly formed at the equalization plate 422. The limiting groove 6232 and the limiting post 7224 are in sliding fit.

[0047] By setting the limiting post 7224 and the limiting groove 6232, the angular range of the rotation of the equalization plate 422 is better restricted, thereby better preventing the liquid glue in the equalization cavity 5212 from flowing into the slit.

[0048] Seen in Figure 1-2 In this embodiment, two sealing plates 203 are provided at both ends of the component body 100 along its length. Multiple locking elements 204 are evenly distributed at the two sealing plates 203. The multiple locking elements 204 pass through the corresponding sealing plates 203 and are threadedly engaged with the component body 100.

[0049] The sealing plate 203 effectively blocks both sides of the main channel 110, and the locking member 204 effectively coordinates the sealing plate 203 with the main body 100 of the component.

[0050] Understandably, locking component 204 is an external hexagonal screw.

[0051] In another preferred embodiment, which differs from this embodiment, a first inclined edge 3012 is formed at the first main body 101 on both sides of the discharge section 313, and a second inclined edge 3022 is formed at the second main body 102. Through the above, the speed of the liquid adhesive flowing into the discharge section 313 can be reduced, so that the liquid adhesive in the buffer section 312 is in a more stable state.

[0052] Example 2

[0053] This embodiment provides a packaging turnover composite film preparation device, which includes the coating component in Embodiment 1. The coating component applies liquid adhesive to the surface of the composite material to be prepared, thereby improving the composite efficiency of the packaging turnover composite film.

[0054] Example 3

[0055] This embodiment provides a method for preparing a packaging turnover composite film, which is implemented using the packaging turnover composite film preparation device in Embodiment 2.

[0056] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0057] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A coating assembly, characterized in that: The component includes a main body (100), within which a main channel (110) is formed; the main channel (110) has a feed section (311), a buffer section (312), and a discharge section (313) arranged sequentially, the discharge section (313) extending laterally to form a slit for cooperating with the body to be coated; a leveling mechanism (320) is provided between the buffer section (312) and the discharge section (313), the leveling mechanism (320) including a continuous lateral direction... Multiple equalization channels (421) are provided, and the equalization channels (421) extend from the side wall of the buffer section (312) to the side wall of the discharge section (313); the discharge section (313) is provided with equalization plates (422) hinged between two adjacent equalization channels (421), and the hinge axis (7225) of the equalization plate (422) extends along the flow direction of the discharge section (313); the equalization plate (422) is used to rotate under the action of the fluid in the corresponding equalization channel (421); The main body (100) includes a first body (101) and a second body (102) that cooperate with each other. The first body (101) forms a groove (4011) laterally, and the second body (102) forms a corresponding protrusion (4021). The sidewall of the groove (4011) and the sidewall of the protrusion (4021) together form a feeding section (311), and the bottom surface of the protrusion (4021) and the bottom surface of the groove (4011) together form a buffer section (312). The equalization channel (421) includes an induction channel (5211) formed in the first body (101) parallel to the discharge section (313), and a plurality of equalization chambers (5212) connected to the buffer section (312) and the discharge section (313), with the equalization chambers (5212) spaced apart between two adjacent induction channels (5211).

2. The coating assembly according to claim 1, characterized in that: The sidewall of the equalization plate (422) forms a first arc surface (7221), and the equalization cavity (5212) forms a corresponding second arc surface (5214). The first arc surface (7221) and the second arc surface (5214) rotate together.

3. The coating assembly according to claim 2, characterized in that: Two sensing holes (5213) are formed at intervals on the side wall of the sensing channel (5211). The two sensing holes (5213) are respectively connected to the corresponding adjacent equalization cavity (5212). Two matching cavities (7222) are provided at the equalization plate (422). The two matching cavities (7222) are connected to the two sensing holes (5213).

4. The coating assembly according to claim 3, characterized in that: The equalization chamber (5212) forms mounting grooves (524) at both ends along the flow direction of the discharge section (313). Mounting blocks (423) are provided in the mounting grooves (524). The equalization plate (422) forms a mating surface (7223) on the side facing the mounting block (423). A hinge hole (6231) is formed on the mounting block (423) facing the mating surface (7223). The hinge hole (6231) is rotatably engaged with the hinge shaft (7225).

5. The coating assembly according to claim 4, characterized in that: The mounting block (423) also forms a limiting groove (6232) facing the mating surface (7223), and a limiting post (7224) is formed at the equalization plate (422). The limiting groove (6232) and the limiting post (7224) slide together.

6. The coating assembly according to claim 1, characterized in that: Two sealing plates (203) are provided at both ends of the component body (100) along the length direction. Multiple locking elements (204) are evenly distributed at the two sealing plates (203). The multiple locking elements (204) pass through the corresponding sealing plates (203) and are threadedly engaged with the component body (100).

7. A packaging turnover composite film preparation device, characterized in that: Includes the coating component as described in any one of claims 1-6.

8. A method for preparing a packaging turnover composite film, characterized in that: This is achieved using the packaging turnover composite film preparation apparatus described in claim 7.

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