CN219043442U

CN219043442U - Coating die head of hot melt adhesive coating machine

Info

Publication number: CN219043442U
Application number: CN202222542788.1U
Authority: CN
Inventors: 王许根
Original assignee: Hunan Zhongxiang Label Co ltd
Current assignee: Hunan Zhongxiang Label Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-19
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a coating die head of a hot melt adhesive coating machine, which comprises an upper die head, a lower die head, an adhesive supply groove and a plugging shaft, wherein the upper die head is provided with a sealing groove; the joint surface of the upper die head and the lower die head is correspondingly provided with the glue supply groove, and the gasket is arranged between the upper die head and the lower die head and above the glue supply groove; the lower part of the head end of the plugging shaft is vertically provided with plugging sheets, and the head end of the plugging shaft is detachably inserted between the two ends of the glue supply groove. The application can adjust the glue outlet length of the coating die head according to the width of the substrate to be coated, can avoid glue waste, and can also avoid subsequent cleaning difficulty caused by glue spraying on other objects.

Description

Coating die head of hot melt adhesive coating machine

Technical Field

The utility model relates to the field of hot melt adhesive coating machines, in particular to a coating die head of a hot melt adhesive coating machine.

Background

A hot-melt adhesive coater is a device for coating a liquid adhesive, which is a solid meltable polymer which does not need a solvent, contains no water and is 100% solid, is solid at normal temperature, is melted to a certain extent by heating, becomes flowable and has a certain viscosity, on a substrate, and generally comprises a composite part, and can be used for compositing another substrate and a rubberized substrate. The hot melt adhesive coating machine generally uses a slit coating die head, the existing coating die head generally comprises an upper die head, a lower die head and a gasket clamped between the upper die head and the lower die head, and the slurry flows out along a slit between the upper die head and the lower die head under a certain pressure and a certain flow rate and is coated on a substrate. However, the length of the glue outlet of the existing coating die head is fixed, even if the width of the substrate to be coated is smaller than the length of the glue outlet, the glue outlet of the coating die head is still full-length glue outlet, in this case, glue waste can be caused, and if the glue outlet is longer and the width of the substrate is narrower, the glue at two ends of the glue outlet is not directly sprayed on the substrate but sprayed on the material roller, and the glue is difficult to clean later. Aiming at the problems, the scheme provides a coating die head of a hot melt adhesive coating machine.

Disclosure of Invention

In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a coating die of a hot melt adhesive coater.

According to the technical scheme provided by the embodiment of the application, the coating die head of the hot melt adhesive coating machine comprises an upper die head, a lower die head, an adhesive supply groove and a plugging shaft; the joint surface of the upper die head and the lower die head is correspondingly provided with the glue supply groove, and the gasket is arranged between the upper die head and the lower die head and positioned behind the glue supply groove; the head end side of shutoff axle is equipped with the shutoff piece that can shutoff upper die head and lower die head are located the place ahead clearance of glue supply groove, two the head end of shutoff axle is all detachable inserts both sides the both ends of glue supply groove.

In a preferred embodiment of a coating die head of a hot melt adhesive coating machine provided by the utility model, a plurality of adhesive feeding channels are arranged at the top of the upper die head, and valves are arranged on the adhesive feeding channels.

In a preferred embodiment of the coating die head of the hot melt adhesive coating machine provided by the utility model, the discharge port of the adhesive feeding channel is communicated with the adhesive feeding groove of the upper die head.

In a preferred embodiment of the coating die of the hot melt adhesive coating machine provided by the utility model, the thicknesses of the plugging sheet and the gasket are the same.

In a preferred embodiment of the coating die head of the hot melt adhesive coating machine provided by the utility model, the head end of the plugging shaft and the outer part of the plugging sheet are respectively provided with a sealant layer.

In a preferred embodiment of a coating die head of a hot melt adhesive coating machine provided by the utility model, semicircular spiral rings corresponding to the peripheral circumferences of a plugging shaft are arranged outside two ends of an upper die head and a lower die head, a circular ring corresponding to the diameter of the plugging shaft is formed between the two semicircular spiral rings, and an avoidance port corresponding to a plugging sheet is arranged between the semicircular spiral rings of the upper die head and the lower die head.

In a preferred embodiment of the coating die head of the hot melt adhesive coating machine provided by the utility model, the rear rod part of the head end of the plugging shaft is provided with a threaded rod, the threaded rod is in threaded connection with a nut in threaded connection with the semicircular spiral ring, and the threads on the semicircular spiral ring and the threaded rod are the same.

To sum up, the beneficial effects of this application: the glue outlet length of the coating die head can be adjusted according to the width of the substrate to be coated, so that the waste of glue can be avoided, and meanwhile, the subsequent difficulty in cleaning caused by spraying the glue onto other objects can be avoided.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic view showing a bottom cross-sectional structure of a first embodiment;

fig. 2 is a schematic left-view cross-sectional structure of the first embodiment.

Reference numerals in the drawings: 1. the device comprises an upper die head, a lower die head, a glue supplying groove, a plugging shaft, a gasket, a plugging sheet, a glue inlet channel, a sealing glue layer, a semicircular arc spiral ring, a avoiding opening and a nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Embodiment one:

as shown in fig. 1 and 2, a coating die of a hot melt adhesive coating machine comprises an upper die 1, a lower die 2, a glue supply groove 3 and a blocking shaft 4; the joint surface of the upper die head 1 and the lower die head 2 is correspondingly provided with the glue supply groove 3, and the gasket 5 is arranged between the upper die head 1 and the lower die head 2 and positioned behind the glue supply groove 3; the side of the head end of the plugging shaft 4 is provided with plugging sheets 6 which can plug the gaps between the upper die head and the lower die head in the front of the glue supply groove, and the two head ends of the plugging shaft 4 are detachably inserted into the two ends of the glue supply groove 3.

In this embodiment, a plurality of glue inlet channels 7 are connected to the back of the upper die head 1, and valves are installed on the glue inlet channels 7, glue is injected into a plurality of points along the length direction of the glue feeding groove 3 through the glue inlet channels 7, so that uniform liquid feeding in the whole length of the glue feeding groove 3 is ensured, and meanwhile, the glue inlet channels 7 at positions corresponding to positions where no glue is discharged can be selected to be closed according to the glue outlet length of the glue outlet of the coating die head.

In this embodiment, the discharge port of the glue inlet channel 7 is communicated with the glue supply groove 3 of the upper die head 1, glue is injected into the glue supply groove 3 through the glue inlet channel 7, and then the glue is sprayed onto the substrate through a slit between the upper die head 1 and the lower die head 2 and below the glue supply groove 3.

In this embodiment, the thicknesses of the blocking sheet 6 and the gasket 5 are the same, and the gasket 5 is used for preventing the glue in the glue supply groove 3 from flowing out to the outside of the coating die head upwards and laterally; the plugging sheets 6 are positioned at the two ends of the upper die head 1 and the lower die head 2 and used for preventing glue from flowing out from the side surfaces of the coating die heads, and meanwhile, the distance between the plugging sheets 6 at the two ends is the glue outlet length of the coating die heads.

In this embodiment, a sealant layer 8 is disposed at the head end of the plugging shaft 4 and the outside of the plugging sheet 6, and the head end of the plugging head 4 is inserted into two ends of the glue supply groove 3 and can move back and forth along the inside of the glue supply groove 3, and the sealant layer 8 is located between the upper die head 1 and the lower die head 2 and can be extruded to perform a sealing function.

In this embodiment, a semicircular spiral ring 9 corresponding to the peripheral circumference of the plugging shaft 4 is arranged outside two ends of the upper die head 1 and the lower die head 2, a circular ring corresponding to the diameter of the plugging shaft 4 is formed between the two semicircular spiral rings 9, and an avoidance port 10 corresponding to the plugging sheet 6 is arranged between the semicircular spiral rings 9 of the upper die head 1 and the lower die head 2; the plugging shaft 4 is a threaded rod; the plugging shaft 4 is in threaded connection with a nut 11 corresponding to the semicircular arc spiral ring 9, and threads on the semicircular arc spiral ring 9 and the threaded rod are identical.

The sealing shaft 4 is inserted into the glue supply groove 3 from two ends of the coating die head, the sealing sheets 6 at the head end of the sealing shaft 4 can enter between the upper die head 1 and the lower die head 2 from the avoiding opening 10, then the distance between the sealing sheets 6 at the two ends is adjusted according to the width of a glue coating substrate, when the width of the substrate is wider, the sealing shaft 4 is moved to the positions of the outer ends of the two ends of the glue supply groove 3, the torsion nut 11 is fixed with the semicircular arc spiral ring 9, the sealing shaft 4 is extruded after being fastened and fixed between the threaded rod and the upper die head 1 and the lower die head 2, the sealing shaft 4 is not easy to rotate and cannot be displaced forwards and backwards, at this time, the position of the sealing shaft 4 is stably fixed, when the width of the glue coating substrate is narrower, the upper die head 1 and the lower die head 2 are opened, the sealing shaft 4 at the two ends of the coating die head is pushed to the corresponding distance inside the coating die head, then the nut 11 and the semicircular arc spiral ring 9 are fixed after being pressed and fixed between the upper die head and the lower die head 2, and the glue outlet width of the coating die head can be adjusted according to the width of the glue coating substrate, and the subsequent cleaning work can be avoided conveniently.

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. Meanwhile, the scope of the utility model referred to in this application is not limited to the technical solutions of the specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or their equivalents without departing from the inventive concept. Such as the above-described features and technical features disclosed in the present application, but not limited to, having similar functions, are replaced with each other.

Claims

1. The utility model provides a coating die of hot melt adhesive coating machine, includes upper die (1) and lower die (2), its characterized in that: the device also comprises a glue supply groove (3) and a plugging shaft (4); the glue feeding groove (3) is correspondingly arranged on the joint surface of the upper die head (1) and the lower die head (2), and a gasket (5) is arranged between the upper die head (1) and the lower die head (2) and positioned behind the glue feeding groove (3); the side of the head end of the plugging shaft (4) is provided with plugging sheets (6) which can plug the gap between the upper die head and the lower die head in front of the glue supply groove, and the two head ends of the plugging shaft (4) are detachably inserted into the two ends of the glue supply groove (3).

2. The coating die of a hot melt adhesive coating machine as set forth in claim 1, wherein: the top of the upper die head (1) is provided with a plurality of glue inlet channels (7), and valves are arranged on the glue inlet channels (7).

3. A coating die of a hot melt adhesive coating machine as set forth in claim 2, wherein: and a discharge port of the glue inlet channel (7) is communicated with a glue supply groove (3) of the upper die head (1).

4. The coating die of a hot melt adhesive coating machine as set forth in claim 1, wherein: the thickness of the plugging sheet (6) is the same as that of the gasket (5).

5. The coating die of a hot melt adhesive coating machine as set forth in claim 1, wherein: and sealing glue layers (8) are respectively arranged at the head end of the plugging shaft (4) and the outside of the plugging piece (6).

6. The coating die of a hot melt adhesive coating machine as set forth in claim 1, wherein: semi-circular spiral rings (9) corresponding to the peripheral circumferences of the plugging shafts (4) are arranged outside the two ends of the upper die head (1) and the lower die head (2), circular rings corresponding to the diameters of the plugging shafts (4) are formed between the two semi-circular spiral rings (9), and avoiding openings (10) corresponding to the plugging sheets (6) are formed between the semi-circular spiral rings (9) of the upper die head (1) and the lower die head (2).

7. The coating die of a hot melt adhesive coating machine as set forth in claim 6, wherein: the rear rod part of the head end of the plugging shaft (4) is provided with a threaded rod, a nut (11) which is in threaded connection with the semicircular arc spiral ring (9) is screwed on the threaded rod, and threads on the semicircular arc spiral ring (9) and the threaded rod are identical.