Efficient spraying device for coating hot melt adhesive

Abstract

The invention discloses an efficient spraying device for a film coating hot melt adhesive, and belongs to the technical field of spraying atomization devices. A distribution conversion plug is fixedly arranged at the bottom of a top cover, and an air blowing ring is mounted on the inner wall of the top of the top cover; a distribution pipeline is arranged at the bottom of the storage and collection cavity, a plurality of groups of through horizontal branch pipes are arranged in the middle of the distribution pipeline, and horizontal spray nozzles communicated with the horizontal branch pipes are mounted on the outer wall of the distribution conversion plug; the distribution mechanism comprises a rotating outer ring and a conical part; a plurality of groups of outer blanking holes matched with the horizontal branch pipes are formed in the rotating outer ring; a plurality of sets of vertical spraying openings matched with the vertical branch pipes are formed in the bottom of the conical part, and vertical spraying nozzles are installed at the bottoms of the vertical spraying openings. The rotary distribution mechanism can be driven to rotate through cooperation of the rack and the gear ring, so that the horizontal spraying nozzle and the vertical spraying nozzle are switched, and different spraying modes are achieved. The design is ingenious and effective, and the stability and practicability of the efficient spraying device for the coating hot melt adhesive are improved.

Description

Technical Field

[0001] The invention relates to the technical field of spray atomization devices, in particular to a high-efficiency spray device for coating hot melt adhesive. Background Art

[0002] Most of the melt adhesive coating equipment uses the glue roller after gluing to contact the pre-coated film, and then leaves the glue on the surface of the pre-coated film. Although the glue roller method has high processing efficiency and low equipment cost, the quality of the glue coating depends largely on the gluing effect of the glue roller. If the gluing mechanism does not fully glue the glue roller, there is not enough glue on the surface of the glue roller or the glue amount in different areas is different, the glue layer coated on the pre-coated film will be uneven or even have blank areas, resulting in the formation of defective or even waste products. In the prior art, curtain coating is used for coating, which is mainly characterized by non-contact coating method, no mechanical stress is applied to the substrate, reducing the risk of substrate breakage, and providing better coating coverage.

[0003] The patent application with publication number CN108043613A discloses a double-sided curtain coating process and its application and device. In the double-sided curtain coating process, the coating liquid is sprayed on the surface of both sides of the substrate, and the curtain formed by the coating liquid is perpendicular to the surface of the substrate; the spraying speed of the coating liquid on one side of the substrate is 2-500m / min, and the spraying speed of the coating liquid on the other side of the substrate is 2-500m / min, the moving speed of the substrate is 2-500m / min, and the spraying spacing between the two sides of the substrate is 2-40mm. The present invention is mainly used in the preparation of separation membranes, and the coating is carried out on both sides of the substrate respectively, and the spraying speed of the coating liquid on both sides of the substrate is adjusted respectively, and the coating spacing is matched to achieve stable coating. Different thicknesses of coating can be achieved on both sides of the substrate according to actual needs; by adjusting the spraying speed and matching the coating spacing, the substrate can be coated with different inclination angles.

[0004] However, the coating spray device disclosed above has a general degree of freedom, a single coating mode, and cannot freely change the spray mode according to actual needs, thereby performing single or double coating processing on the film. Summary of the invention

[0005] The purpose of the present invention is to provide a high-efficiency hot melt adhesive spraying device for coating in order to solve the problems that the existing coating spraying device has a general degree of freedom, a single coating mode, and cannot freely change the spraying mode according to actual needs, thereby performing single or double coating processing on the film.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a high-efficiency spraying device for coating hot melt adhesive, comprising a support frame, on which a plurality of spraying mechanisms are installed, the spraying mechanisms comprising a top cover, a distribution conversion plug is fixedly provided at the bottom of the top cover, a blast ring is installed on the top inner wall of the top cover, a storage cavity located below the blast ring is provided at the top of the distribution conversion plug; a distribution pipe is provided at the bottom of the storage cavity, a plurality of horizontal branch pipes are provided in the middle of the distribution pipe, a horizontal spray nozzle connected to the horizontal branch pipe is installed on the outer wall of the distribution conversion plug; the bottom of the distribution pipe is connected to There are multiple groups of vertical branch pipes; a rotating distribution mechanism is movably installed at the bottom of the distribution conversion plug, and the rotating distribution mechanism includes a rotating outer ring and a tapered portion. A rotating cavity is opened inside the distribution conversion plug, and the rotating outer ring is movably installed at the bottom of the distribution conversion plug through the rotating cavity; multiple groups of external discharge holes cooperating with the horizontal branch pipes are opened on the rotating outer ring; multiple groups of vertical spray ports cooperating with the vertical branch pipes are opened at the bottom of the tapered portion, and a vertical spray nozzle is installed at the bottom of the vertical spray port; when the rotating distribution mechanism rotates, the spray conversion between the horizontal spray nozzle and the vertical spray nozzle can be realized.

[0007] As a further solution of the present invention: an operation panel is arranged on the outer wall of the support frame, a plurality of installation grooves are arranged on the top of the support frame, and the spray mechanism is installed in the installation grooves.

[0008] As a further solution of the present invention: a feed pipe is arranged on the top of the top cover, and a control valve is arranged in the middle of the feed pipe; a plurality of groups of the feed pipes are interconnected through connecting pipes, and a connecting port is also arranged on the connecting pipes.

[0009] As a further solution of the present invention: an installation cavity is opened on the inner wall of the top cover, the blower ring is installed in the installation cavity, an air inlet pipe is arranged on the top of the blower ring, and a plurality of nozzles are opened on the inner wall of the blower ring.

[0010] As a further solution of the present invention: an annular vertical shielding cavity is provided in the middle of the distribution conversion plug, and the bottom of the vertical shielding cavity is connected with the rotating cavity through a connecting cavity; a connecting boss rotatably arranged in the connecting cavity is fixedly provided on the inner wall of the rotating outer ring, and a rotating inner ring rotatably arranged in the vertical shielding cavity is provided on the top of the connecting boss, and a plurality of groups of internal feed holes cooperating with the external feed holes and the horizontal branch pipes are provided on the rotating inner ring.

[0011] As a further solution of the present invention: a limit ring is arranged on the top of the rotating outer ring, and a T-shaped groove cooperating with the limit ring is opened on the top of the rotating cavity.

[0012] As a further solution of the present invention: a gear ring is installed on the outer wall of the rotating outer ring, a cylinder is also installed on the side wall of the support frame, a rack is installed on the output end of the cylinder, and the rack is meshed with multiple groups of the gear rings.

[0013] As a further solution of the present invention: a transverse shielding cavity is also opened in the middle part of the distribution pipeline, and swinging cavities connected with the rotating cavity are opened on both sides of the transverse shielding cavity; a valve mechanism is installed in the transverse shielding cavity, and a swing arm movably arranged in the swinging cavity is fixedly connected to the inner wall of the rotating outer ring, and the inner side of the swing arm is fixedly connected to the valve mechanism.

[0014] As a further solution of the present invention: the transverse shielding cavity is located between the horizontal branch pipe and the vertical branch pipe.

[0015] As a further solution of the present invention: the valve mechanism includes a base and a top plate, and a feed cavity cooperating with the distribution pipe is opened in the middle of the base and the top plate, and a plurality of groups of baffles for controlling the opening and closing of the feed cavity are rotatably arranged on the base, and a linkage ring is also rotatably arranged on the base, and the linkage ring is movably connected with the baffle through a linkage arm; a plurality of groups of mounting columns are also arranged on the base, and the top plate is installed on the top of the mounting columns; a plurality of groups of engaging grooves cooperating with the mounting columns are also opened on the linkage ring, and the swing arm is fixedly arranged on the outer side of the linkage ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can drive the rotating distribution mechanism to rotate through the cooperation of the rack and the gear ring, thereby converting the horizontal spray nozzle and the vertical spray nozzle, thereby realizing different spray modes. When the rotating distribution mechanism rotates clockwise, the vertical spray port is connected to the vertical branch pipe, and the outer discharge hole on the rotating outer ring is misaligned with the horizontal branch pipe. At this time, the spray hot melt adhesive in the storage chamber is sprayed downward through the distribution pipe, the vertical branch pipe, the vertical spray port and the vertical spray nozzle in turn. When the rotating distribution mechanism rotates counterclockwise, the vertical spray port is misaligned with the vertical branch pipe, and the outer discharge hole on the rotating outer ring is connected to the horizontal branch pipe. At this time, the spray hot melt adhesive in the storage chamber is sprayed to both sides through the distribution pipe, the horizontal branch pipe and the horizontal spray nozzle in turn. This design is ingenious and effective, which improves the stability and practicality of the high-efficiency spraying device of the coating hot melt adhesive.

[0018] 2. In the present invention, when the rotating distribution mechanism rotates clockwise and performs vertical spraying, the valve mechanism and the baffle are in an open state, and the inner discharge hole on the rotating inner ring is misaligned with the horizontal branch pipe. At this time, the horizontal branch pipe is not connected to the distribution pipeline, so the wind force of the air blast ring will be concentrated in the vertical branch pipe. When the rotating distribution mechanism rotates counterclockwise and performs horizontal spraying, the valve mechanism and the baffle are in a closed state, and the inner discharge hole on the rotating inner ring is connected to the horizontal branch pipe. At this time, the vertical branch pipe is not connected to the distribution pipeline, so the wind force of the air blast ring will be concentrated in the horizontal branch pipe. This design improves the spraying effect of the high-efficiency spraying device for coating hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 It is a three-dimensional structural diagram of the spray mechanism in the present invention;

[0022] Figure 3 It is a three-dimensional structural diagram of the top cover in the present invention;

[0023] Figure 4 It is a three-dimensional structural diagram of the distribution conversion plug in the present invention;

[0024] Figure 5 It is the three-dimensional structure of the rotary distribution mechanism in the present invention Figure 1 ;

[0025] Figure 6 It is the three-dimensional structure of the rotary distribution mechanism in the present invention Figure 2 ;

[0026] Figure 7 is a cross-sectional view of the present invention in the direction of the horizontal branch pipe;

[0027] Figure 8 is a cross-sectional view of the present invention in the direction of the vertical branch pipe;

[0028] Fig. 9 is a cross-sectional view of the distribution conversion plug in the present invention in the horizontal direction;

[0029] Fig.10 It is a three-dimensional structural diagram of the support frame of the present invention when double-sided spraying is performed;

[0030] Fig.11 It is a three-dimensional structural diagram of the valve mechanism in the present invention;

[0031] Fig.12 It is a three-dimensional internal structure diagram of the valve mechanism in the present invention.

[0032] Description of reference numerals:

[0033] 1. Support frame; 2. Operation panel; 3. Installation slot; 4. Spray mechanism; 5. Top cover; 6. Distribution conversion plug; 7. Feed pipe; 8. Control valve; 9. Connecting pipe; 10. Connecting port; 11. Installation cavity; 12. Blowing ring; 13. Inlet pipe; 14. Nozzle; 15. Storage cavity; 16. Distribution pipeline; 17. Horizontal branch pipe; 18. Horizontal spray nozzle; 19. Vertical branch pipe; 20. Rotation cavity; 21. Vertical shielding cavity; 22. Connecting cavity; 23. Rotating distribution mechanism; 24. Rotating outer ring; 25. Limit ring; 26. T-slot; 27. External feed hole; 28. Connecting boss; 29. ​​Rotating inner ring; 30. Internal feed hole; 31. Gear ring; 32. Cylinder; 33. Rack; 34. Conical part; 35. Vertical spray port; 36. Vertical spray nozzle; 37. Horizontal shielding cavity; 38. Swinging cavity; 39. Swing arm; 40. Valve mechanism; 41. Base; 42. Top plate; 43. Feed cavity; 44. Shielding plate; 45. Mounting column; 46. Linkage ring; 47. Engaging groove; 48. Linkage arm. DETAILED DESCRIPTION

[0034] The following will be combined with the attached Figures 1 to 12 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a high-efficiency spraying device for coating hot melt adhesive by improvement. Figure 1-Figure 12As shown, it comprises a support frame 1, on which a plurality of spray mechanisms 4 are mounted, the spray mechanisms 4 comprise a top cover 5, a distribution conversion plug 6 is fixedly mounted at the bottom of the top cover 5, a blast ring 12 is mounted on the top inner wall of the top cover 5, a storage cavity 15 located below the blast ring 12 is opened at the top of the distribution conversion plug 6; a distribution pipe 16 is arranged at the bottom of the storage cavity 15, a plurality of horizontal branch pipes 17 are arranged in the middle of the distribution pipe 16, a horizontal spray nozzle 18 connected to the horizontal branch pipe 17 is mounted on the outer wall of the distribution conversion plug 6; a plurality of vertical branch pipes 19 are connected to the bottom of the distribution pipe 16; the bottom of the distribution conversion plug 6 A rotating distribution mechanism 23 is movably installed on the bottom of the distribution conversion plug 6, and the rotating distribution mechanism 23 includes a rotating outer ring 24 and a tapered portion 34. A rotating cavity 20 is provided inside the distribution conversion plug 6, and the rotating outer ring 24 is movably installed on the bottom of the distribution conversion plug 6 through the rotating cavity 20; a plurality of external discharge holes 27 cooperating with the horizontal branch pipe 17 are provided on the rotating outer ring 24; a plurality of vertical spray ports 35 cooperating with the vertical branch pipe 19 are provided at the bottom of the tapered portion 34, and a vertical spray nozzle 36 is installed at the bottom of the vertical spray port 35; when the rotating distribution mechanism 23 rotates, the spray conversion between the horizontal spray nozzle 18 and the vertical spray nozzle 36 can be realized.

[0036] In this embodiment: the coating hot melt adhesive high-efficiency spraying device is mainly divided into two parts: a support frame 1 and a spraying mechanism 4. When the device is in use, firstly, hot melt adhesive is input into each spraying mechanism 4 through the connecting pipe 9 through the external glue supply device, and then the control valve 8 is closed. When a single spraying of the film is required, the cylinder 32 and the rack 33 drive the multiple sets of gear rings 31 to rotate clockwise. When the rotating distribution mechanism 23 rotates clockwise, the valve mechanism 40 and the baffle 44 are in the open state, and the inner discharge hole 30 on the rotating inner ring 29 is misaligned with the horizontal branch pipe 17. At this time, the horizontal branch pipe 17 is not connected to the distribution pipe 16, so the wind force of the blower ring 12 will be concentrated in the vertical branch pipe 19. The vertical spray port 35 is connected to the vertical branch pipe 19, and the outer discharge hole 27 on the rotating outer ring 24 is misaligned with the horizontal branch pipe 17. At this time, the spray hot melt adhesive in the storage chamber 15 is sprayed to the film below through the distribution pipe 16, the vertical branch pipe 19, the vertical spray port 35 and the vertical spray nozzle 36 in turn. When the film needs to be double sprayed, the multiple sets of gear rings 31 are driven to rotate counterclockwise by the cylinder 32 and the rack 33. When the rotating distribution mechanism 23 rotates counterclockwise, the valve mechanism 40 and the baffle plate 44 are closed at this time, and the inner discharge hole 30 on the rotating inner ring 29 is connected to the horizontal branch pipe 17. At this time, the vertical branch pipe 19 is not connected to the distribution pipe 16, so the wind force of the blast ring 12 will be concentrated in the horizontal branch pipe 17. The vertical spray port 35 is misaligned with the vertical branch pipe 19, and the outer discharge hole 27 on the rotating outer ring 24 is connected to the horizontal branch pipe 17. At this time, the spray hot melt adhesive in the storage chamber 15 is sprayed to the films on both sides through the distribution pipe 16, the horizontal branch pipe 17 and the horizontal spray nozzle 18 in turn.

[0037] See attached Figure 1 and attached Fig.10 An operation panel 2 is arranged on the outer wall of the support frame 1 , and a plurality of mounting grooves 3 are provided on the top of the support frame 1 , in which a spray mechanism 4 is installed.

[0038] In this embodiment, in order to control the operation of the equipment, an operation panel 2 structure is designed.

[0039] See attached Figure 1 -Attached Figure 2 A feed pipe 7 is provided on the top of the top cover 5, and a control valve 8 is provided in the middle of the feed pipe 7; multiple groups of feed pipes 7 are interconnected through a connecting pipe 9, and a connecting port 10 is also provided on the connecting pipe 9.

[0040] In this embodiment, in order to add hot melt adhesive into the storage chamber 15 , an external adhesive supply device inputs hot melt adhesive into the spray mechanism 4 through the connecting pipe 9 and each feed pipe 7 .

[0041] See attached Figure 3 and attached Figure 7 An installation cavity 11 is provided on the inner wall of the top cover 5 , and a blast ring 12 is installed in the installation cavity 11 . An air inlet pipe 13 is provided on the top of the blast ring 12 , and a plurality of nozzles 14 are provided on the inner wall of the blast ring 12 .

[0042] In this embodiment, the air inlet pipe 13 is connected to an external air blowing device. During operation, the strong wind force generated by the external air blowing device will blow the colloid in the storage chamber 15. At this time, the hot melt adhesive will be sprayed and discharged through the horizontal spray nozzle 18 or the vertical spray nozzle 36.

[0043] See attached Figure 4 -Attached Figure 7 A ring-shaped vertical shielding cavity 21 is provided in the middle of the distribution conversion plug 6, and the bottom of the vertical shielding cavity 21 is connected with the rotating cavity 20 through a connecting cavity 22; a connecting boss 28 rotatably arranged in the connecting cavity 22 is fixedly provided on the inner wall of the rotating outer ring 24, and a rotating inner ring 29 rotatably arranged in the vertical shielding cavity 21 is provided on the top of the connecting boss 28, and a plurality of groups of internal discharge holes 30 cooperating with the external discharge holes 27 and the horizontal branch pipe 17 are provided on the rotating inner ring 29.

[0044] In this embodiment: when the blast ring 12 blows downward and drives the raw material in the storage chamber 15 to spray vertically downward, in order to concentrate the wind force and prevent the wind force from entering the horizontal branch pipe 17 and affecting the spraying effect, a rotating outer ring 24 structure is designed. When spraying through the horizontal spray nozzle 18, the inner feed hole 30, the horizontal branch pipe 17 and the outer feed hole 27 are in a connected state. When spraying through the vertical spray nozzle 36, the inner feed hole 30 and the outer feed hole 27 are not in a connected state with the horizontal branch pipe 17.

[0045] See attached Figure 5 -Attached Figure 8 A limit ring 25 is arranged on the top of the rotating outer ring 24, and a T-shaped groove 26 cooperating therewith is opened on the top of the rotating cavity 20.

[0046] In this embodiment, in order to install the rotating outer ring 24 and ensure its free rotation relative to the distribution conversion plug 6, a stop ring 25 and a T-slot 26 structure that cooperate with each other are designed.

[0047] See attached Figure 1 -Attached Figure 2 A gear ring 31 is installed on the outer wall of the rotating outer ring 24, and a cylinder 32 is also installed on the side wall of the support frame 1. A rack 33 is installed on the output end of the cylinder 32, and the rack 33 is meshed with multiple sets of gear rings 31.

[0048] In this embodiment, in order to synchronously drive the multiple sets of rotating distribution mechanisms 23 to rotate, thereby realizing the switching of the spraying mode, a rack 33 and a gear ring 31 structure that cooperate with each other are designed.

[0049] See attached Figure 7 -Attached Fig. 9 A transverse shielding cavity 37 is also opened in the middle of the distribution pipe 16, and swing cavities 38 connected with the rotating cavity 20 are opened on both sides of the transverse shielding cavity 37; a valve mechanism 40 is installed in the transverse shielding cavity 37, and a swing arm 39 movably arranged in the swing cavity 38 is fixedly connected to the inner wall of the rotating outer ring 24, and the inner side of the swing arm 39 is fixedly connected to the valve mechanism 40.

[0050] In this embodiment: when the rotating distribution mechanism 23 rotates clockwise and performs vertical spraying, the valve mechanism 40 and the baffle plate 44 are in an open state, and the inner discharge hole 30 on the rotating inner ring 29 is misaligned with the horizontal branch pipe 17. At this time, the horizontal branch pipe 17 is not connected to the distribution pipe 16, so the wind force of the blast ring 12 will be concentrated in the vertical branch pipe 19. When the rotating distribution mechanism 23 rotates counterclockwise and performs horizontal spraying, the valve mechanism 40 and the baffle plate 44 are in a closed state, and the inner discharge hole 30 on the rotating inner ring 29 is connected to the horizontal branch pipe 17. At this time, the vertical branch pipe 19 is not connected to the distribution pipe 16, so the wind force of the blast ring 12 will be concentrated in the horizontal branch pipe 17.

[0051] See attached Figure 7 -Attached Fig. 9 The transverse shielding cavity 37 is located between the horizontal branch pipe 17 and the vertical branch pipe 19.

[0052] In this embodiment, in order to shield the distribution pipe 16 and thus concentrate the wind force more on the operating branch pipe, the transverse shielding cavity 37 is located between the horizontal branch pipe 17 and the vertical branch pipe 19 .

[0053] See attached Figure 6 and attached Fig.11 -Attached Fig.12 The valve mechanism 40 includes a base 41 and a top plate 42. A feed cavity 43 cooperating with the distribution pipe 16 is provided in the middle of the base 41 and the top plate 42. A plurality of baffles 44 for controlling the opening and closing of the feed cavity 43 are rotatably provided on the base 41. A linkage ring 46 is also rotatably provided on the base 41. The linkage ring 46 is movably connected to the baffle 44 through a linkage arm 48. A plurality of mounting columns 45 are also provided on the base 41. The top plate 42 is installed on the top of the mounting columns 45. A plurality of engaging grooves 47 cooperating with the mounting columns 45 are also provided on the linkage ring 46. The swing arm 39 is fixedly provided on the outer side of the linkage ring 46.

[0054] In this embodiment, when the rotating distribution mechanism 23 rotates, in order to synchronously control the opening and closing of the distribution pipeline 16 through the valve mechanism 40, the swing arm 39 is fixedly arranged on the outside of the linkage ring 46. When the rotating distribution mechanism 23 and the swing arm 39 rotate clockwise, the linkage ring 46 drives the shielding plate 44 to rotate through the linkage arm 48 and open the distribution pipeline 16. When the rotating distribution mechanism 23 and the swing arm 39 rotate counterclockwise, the linkage ring 46 drives the shielding plate 44 to rotate through the linkage arm 48 and close the distribution pipeline 16.

[0055] Working principle of the present invention: When the device is in use, firstly, hot melt adhesive is input into each spray mechanism 4 through the connecting pipe 9 through the external adhesive supply device, and then the control valve 8 is closed. When it is necessary to spray the film once, the cylinder 32 and the rack 33 drive the multiple gear rings 31 to rotate clockwise. When the rotating distribution mechanism 23 rotates clockwise, the valve mechanism 40 and the baffle 44 are in the open state, and the inner discharge hole 30 on the rotating inner ring 29 is misaligned with the horizontal branch pipe 17. At this time, the horizontal branch pipe 17 is not connected with the distribution pipe 16, so the wind force of the blast ring 12 will be concentrated in the vertical branch pipe 19. The vertical spray port 35 is connected with the vertical branch pipe 19, and the outer discharge hole 27 on the rotating outer ring 24 is misaligned with the horizontal branch pipe 17. At this time, the spray hot melt adhesive in the storage chamber 15 is sprayed to the film below through the distribution pipe 16, the vertical branch pipe 19, the vertical spray port 35 and the vertical spray nozzle 36 in sequence. When the film needs to be double-sprayed, the cylinder 32 and the rack 33 drive the multiple sets of gear rings 31 to rotate counterclockwise. When the rotating distribution mechanism 23 rotates counterclockwise, the valve mechanism 40 and the baffle 44 are closed, and the inner discharge hole 30 on the rotating inner ring 29 is connected to the horizontal branch pipe 17. At this time, the vertical branch pipe 19 is not connected to the distribution pipe 16, so the wind force of the blast ring 12 will be concentrated in the horizontal branch pipe 17. The vertical spray port 35 is misaligned with the vertical branch pipe 19, and the outer discharge hole 27 on the rotating outer ring 24 is connected to the horizontal branch pipe 17. At this time, the spray hot melt adhesive in the storage chamber 15 is sprayed on the films on both sides through the distribution pipe 16, the horizontal branch pipe 17 and the horizontal spray nozzle 18 in turn.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A high-efficiency spraying device for coating hot melt adhesive, comprising a support frame (1), characterized in that: The support frame (1) is provided with a plurality of spray mechanisms (4), the spray mechanisms (4) comprising a top cover (5), a distribution conversion plug (6) being fixedly arranged at the bottom of the top cover (5), a blast ring (12) being installed on the top inner wall of the top cover (5), and a storage cavity (15) located below the blast ring (12) being opened at the top of the distribution conversion plug (6); A distribution pipe (16) is provided at the bottom of the storage chamber (15), and a plurality of groups of horizontal branch pipes (17) are provided in the middle of the distribution pipe (16). A horizontal spray nozzle (18) connected to the horizontal branch pipe (17) is installed on the outer wall of the distribution conversion plug (6); a plurality of groups of vertical branch pipes (19) are connected to the bottom of the distribution pipe (16); a rotating distribution mechanism (23) is movably installed at the bottom of the distribution conversion plug (6), and the rotating distribution mechanism (23) includes a rotating outer ring (24) and a tapered portion (34); a rotating chamber (20) is provided inside the distribution conversion plug (6), and the rotating outer ring (24) is movably installed at the bottom of the distribution conversion plug (6) through the rotating chamber (20); The rotating outer ring (24) is provided with a plurality of external material discharge holes (27) cooperating with the horizontal branch pipe (17); the bottom of the conical portion (34) is provided with a plurality of vertical spray ports (35) cooperating with the vertical branch pipe (19), and a vertical spray nozzle (36) is installed at the bottom of the vertical spray port (35); when the rotating distribution mechanism (23) rotates, the spray conversion between the horizontal spray nozzle (18) and the vertical spray nozzle (36) can be realized.

2. The high-efficiency spraying device for coating hot melt adhesive according to claim 1, characterized in that: An operating panel (2) is arranged on the outer wall of the support frame (1), a plurality of installation slots (3) are provided on the top of the support frame (1), and the spray mechanism (4) is installed in the installation slots (3).

3. The high-efficiency spraying device for coating hot melt adhesive according to claim 1, characterized in that: A feed pipe (7) is provided at the top of the top cover (5), and a control valve (8) is provided in the middle of the feed pipe (7); a plurality of groups of the feed pipes (7) are interconnected via a connecting pipe (9), and a connecting port (10) is also provided on the connecting pipe (9).

4. The high-efficiency spraying device for coating hot melt adhesive according to claim 1, characterized in that: An installation cavity (11) is provided on the inner wall of the top cover (5), the air blower ring (12) is installed in the installation cavity (11), an air inlet pipe (13) is provided on the top of the air blower ring (12), and a plurality of nozzles (14) are provided on the inner wall of the air blower ring (12).

5. A high-efficiency spraying device for coating hot melt adhesive according to any one of claims 1 to 4, characterized in that: An annular vertical shielding cavity (21) is provided in the middle of the distribution conversion plug (6), and the bottom of the vertical shielding cavity (21) is connected to the rotating cavity (20) through a connecting cavity (22); a connecting boss (28) is fixedly provided on the inner wall of the rotating outer ring (24) and is rotatably arranged in the connecting cavity (22); a rotating inner ring (29) is rotatably arranged in the vertical shielding cavity (21) at the top of the connecting boss (28), and a plurality of groups of inner feed holes (30) are provided on the rotating inner ring (29) that cooperate with the outer feed holes (27) and the horizontal branch pipe (17).

6. A high-efficiency spraying device for coating hot melt adhesive according to any one of claims 1 to 4, characterized in that: A limiting ring (25) is arranged on the top of the rotating outer ring (24), and a T-shaped groove (26) matching with the limiting ring is opened on the top of the rotating cavity (20).

7. A high-efficiency spraying device for coating hot melt adhesive according to any one of claims 1 to 4, characterized in that: A gear ring (31) is mounted on the outer wall of the rotating outer ring (24), a cylinder (32) is also mounted on the side wall of the support frame (1), a rack (33) is mounted on the output end of the cylinder (32), and the rack (33) is meshed with multiple groups of gear rings (31).

8. A high-efficiency spraying device for coating hot melt adhesive according to any one of claims 1 to 4, characterized in that: A transverse shielding cavity (37) is also provided in the middle of the distribution pipe (16), and swing cavities (38) connected to the rotating cavity (20) are provided on both sides of the transverse shielding cavity (37); a valve mechanism (40) is installed in the transverse shielding cavity (37), and a swing arm (39) movably arranged in the swing cavity (38) is fixedly connected to the inner wall of the rotating outer ring (24), and the inner side of the swing arm (39) is fixedly connected to the valve mechanism (40).

9. The high-efficiency spraying device for coating hot melt adhesive according to claim 8, characterized in that: The transverse shielding cavity (37) is located between the horizontal branch pipe (17) and the vertical branch pipe (19).

10. The high-efficiency spraying device for coating hot melt adhesive according to claim 8, characterized in that: The valve mechanism (40) comprises a base (41) and a top plate (42), wherein a feed chamber (43) cooperating with the distribution pipe (16) is provided in the middle of the base (41) and the top plate (42), and a plurality of baffles (44) for controlling the opening and closing of the feed chamber (43) are rotatably provided on the base (41), and a linkage ring (46) is also rotatably provided on the base (41), and the linkage ring (46) is movably connected to the baffle (44) through a linkage arm (48); a plurality of mounting columns (45) are also provided on the base (41), and the top plate (42) is installed on the top of the mounting columns (45); a plurality of engaging grooves (47) cooperating with the mounting columns (45) are also provided on the linkage ring (46), and the swing arm (39) is fixedly provided on the outer side of the linkage ring (46).

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