A multifunctional hot melt adhesive coating spray gun

Abstract

The present invention discloses a multifunctional hot melt adhesive coating spray gun, comprising a spray gun main body and an adapter block arranged at the bottom of the spray gun main body, wherein the spray gun main body is provided with a first melt adhesive input channel, a first air input channel, a second melt adhesive input channel and a second air input channel, respectively, and the adapter block is provided with a first melt adhesive output channel, a first air output channel, a second melt adhesive output channel and a second air output channel, respectively, and each channel of the spray gun main body is connected with each channel of the adapter block respectively, and a first nozzle and a second nozzle are arranged at the bottom of the adapter block, and the output ends of the first melt adhesive output channel and the first air output channel are connected with the first nozzle, and the output ends of the second melt adhesive output channel and the second air output channel are connected with the second nozzle. The present invention can realize the simultaneous spraying of two different hot melt adhesives, accurately apply adhesive according to actual conditions, and effectively save the amount of adhesive.

Description

Technical Field

[0001] The invention relates to hot melt adhesive spray gun equipment, in particular to a multifunctional hot melt adhesive coating spray gun. Background Art

[0002] At present, hot melt adhesive coating spray guns have been successfully used in many industrial manufacturing fields. The current hot melt adhesive coating spray guns are generally single spray guns that can only spray one type of hot melt adhesive at the same time. The flow pressure, air pressure and other parameters of the hot melt adhesive can only be adjusted uniformly and cannot be adjusted independently. If you want to use different hot melt adhesives in combination, you need to use multiple devices, which is inconvenient to use and takes up a lot of space. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a multifunctional hot melt adhesive coating spray gun, which can simultaneously spray two different types of hot melt adhesives and can adjust relevant parameters respectively, thereby achieving precise glue spraying and effectively saving glue consumption.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A multifunctional hot melt adhesive coating spray gun comprises a spray gun body and an adapter block arranged at the bottom of the spray gun body, wherein the spray gun body is provided with a first melt glue input channel, a first air input channel, a second melt glue input channel and a second air input channel, respectively, the input ends of the first melt glue input channel and the second melt glue input channel are respectively connected to a first glue inlet throat and a second glue inlet throat, the input ends of the first air input channel and the second air input channel are respectively connected to a first air pipe assembly and a second air pipe assembly, the adapter block is provided with a first melt glue output channel, a first air output channel, a second melt glue output channel and a second air output channel, respectively, the output ends of the first melt glue input channel, the first air input channel, the second melt glue input channel and the second air input channel are respectively connected to the input ends of the first melt glue output channel, the first air output channel, the second melt glue output channel and the second air output channel, and a first nozzle and a second nozzle are arranged at the bottom of the adapter block, the output ends of the first melt glue output channel and the first air output channel are connected to the first nozzle, and the output ends of the second melt glue output channel and the second air output channel are connected to the second nozzle.

[0006] A further improvement of the present invention is that a first filter chamber, a second filter chamber, a first control chamber and a second control chamber are provided on the top of the spray gun body, the first filter chamber and the first control chamber are respectively connected to the first molten glue input channel in sequence, the second filter chamber and the second control chamber are respectively connected to the second molten glue input channel in sequence, filters are respectively provided in the first filter chamber and the second filter chamber, and glue spraying valve blocks are respectively provided in the first control chamber and the second control chamber, the top of the glue spraying valve block is connected to the solenoid valve, and the solenoid valve controls the switch of the glue spraying valve block.

[0007] According to a further improvement of the present invention, a first manual pressure relief device and a second manual pressure relief device are provided on the side of the spray gun body, respectively communicating with the first filter chamber and the second filter chamber.

[0008] A further improvement of the present invention is that the first glue inlet throat is connected to the top of the first filter chamber, the bottom of the first filter chamber is connected to the input end of the first molten glue input channel, the first molten glue input channel is inclined, the output end of the first molten glue input channel is connected to the side of the first control chamber, and the bottom of the first control chamber is connected to the input end of the first molten glue output channel.

[0009] A further improvement of the present invention is that the side of the spray gun body is provided with an inclined first heating chamber and a second heating chamber, the first heating chamber and the second heating chamber are respectively provided with a spiral rod heater, the first heating chamber is respectively connected to the first air input channel and the first air output channel, and the second heating chamber is respectively connected to the second air input channel and the second air output channel.

[0010] A further improvement of the present invention is that the output end of the first air input channel is connected to the side of the first heating chamber, the bottom of the first heating chamber is connected to the input end of the second air output channel, the spiral rod heater includes a spiral rod body and a third heater, the third heater is arranged in the spiral rod body, and a spiral rack is spirally wound on the side of the spiral rod body, and the outer diameter of the spiral rack is compatible with the inner diameter of the first heating chamber and the second heating chamber.

[0011] A further improvement of the present invention is that a first heater and a first temperature sensor are provided in the adapter block, a first aviation plug is provided on the side of the adapter block, the first aviation plug is electrically connected to the first heater and the first temperature sensor respectively, a second heater and a second temperature sensor are provided in the spray gun body, a second aviation plug is provided on the side of the spray gun body, the second aviation plug is electrically connected to the second heater and the second temperature sensor respectively, and a heat insulation plate is provided between the adapter block and the spray gun body.

[0012] A further improvement of the present invention is that a first air outlet, a first glue outlet hole, a second air outlet and a second glue outlet hole are provided at the bottom of the adapter block, the first air outlet hole and the first glue outlet hole are respectively connected to the first air output channel and the first molten glue output channel, the second air outlet hole and the second glue outlet hole are respectively connected to the second air output channel and the second molten glue output channel, the first air outlet hole and the first glue outlet hole are respectively connected to the first nozzle, and the second air outlet hole and the second glue outlet hole are respectively connected to the second nozzle.

[0013] According to a further improvement of the present invention, the second air outlet holes are respectively arranged at four corners of a square with the second glue outlet hole as the center.

[0014] According to a further improvement of the present invention, a plurality of first nozzles and a plurality of second nozzles are provided, and the first nozzles and the second nozzles are provided on both sides of the bottom of the adapter block, respectively, and adjacent first nozzles and second nozzles are provided side by side.

[0015] By adopting the above technical scheme, two different types of hot melt adhesives can be introduced into the spray gun body at the same time. The two types are independent of each other and do not interfere with each other. The flow rate and pressure of each type can be adjusted independently to achieve precise gluing, save glue, be environmentally friendly, economical, reduce the use of consumables, and save costs. The present invention is also provided with a corresponding air channel for auxiliary injection. The two air channels can adjust the pressure separately. In addition, the filter and the glue spraying valve block are set to filter impurities and control the glue spraying; the spiral rod heater is set to ensure that the temperature in contact with the hot melt adhesive has a certain temperature; the heater is set to ensure the temperature of the nozzle. The present invention integrates multiple functions into one, occupies a small space, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the decomposition structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the decomposed structure of the transfer block;

[0019] Figure 4 It is a structural schematic diagram of the spray gun body;

[0020] Figure 5 It is a top view of the spray gun body;

[0021] Figure 6 for Figure 5 AA section view;

[0022] Figure 7 It is a bottom view of the spray gun body;

[0023] Figure 8for Figure 7 BB cross-sectional view;

[0024] Fig. 9 is a top view of the converter;

[0025] Fig.10 for Fig. 9 CC section view;

[0026] Fig.11 for Fig.10 EE cross-sectional view;

[0027] Fig.12 for Fig.11 FF cross-sectional view;

[0028] Fig.13 for Fig. 9 DD cross-sectional view;

[0029] Fig.14 for Fig.13 GG cross-sectional view;

[0030] Fig.15 It is a bottom view of the transfer block;

[0031] Fig.16 A top view of the present invention;

[0032] Fig.17 for Fig.16 HH cross-sectional view;

[0033] Indications in the figure: 1. Spray gun body; 2. Adapter block; 3. First glue inlet pipe; 4. Second glue inlet pipe; 5. First air pipe assembly; 6. Second air pipe assembly; 7. First nozzle; 8. Second nozzle; 9. First filter chamber; 10. Second filter chamber; 11. First control chamber; 12. Second control chamber; 13. Spray valve block; 14. Solenoid valve; 15. First manual pressure relief device; 16. Second manual pressure relief device; 17. First heating chamber; 18. Second heating chamber; 19. Helical rod heating device; 20, the first heater; 21, the first aviation plug; 22, the filter; 23, the first melt input channel; 24, the first air input channel; 25, the second melt output channel; 26, the second air output channel; 27, the second air outlet; 28, the second glue outlet; 29, the spiral rod body; 30, the third heater; 31, the spiral rack; 32, the first temperature sensor; 33, the second heater; 34, the second temperature sensor; 35, the second aviation plug; 36, the heat insulation board. DETAILED DESCRIPTION

[0034] like Figure 1-17The embodiment of the present invention shown is a multifunctional hot melt adhesive coating spray gun, comprising a spray gun body 1 and an adapter block 2 arranged at the bottom of the spray gun body 1. Hot melt adhesive and air are respectively introduced into the spray gun body 1, and then transported to the nozzle through the adapter block 2 and sprayed out. A heating module is provided in the spray gun body 1 to maintain the temperature of the hot melt adhesive when passing through. The spray gun body 1 is provided with a first melt adhesive input channel 23, a first air input channel 24, a second melt adhesive input channel and a second air input channel, each of which is independent of the other. The input end of the first melt adhesive input channel 23 and the input end of the second melt adhesive input channel are respectively connected to the first glue inlet throat 3 and the second glue inlet throat 4, and the input end of the first air input channel 24 and the input end of the second air input channel are respectively connected to the first air pipe assembly 5 and the second air pipe assembly 5. The adapter block 2 is connected with the pipe assembly 6, and the adapter block 2 is provided with a first melt output channel, a first air output channel, a second melt output channel 25 and a second air output channel 26, respectively. The output end of the first melt input channel 23, the output end of the first air input channel 24, the output end of the second melt input channel and the output end of the second air input channel are respectively connected with the input end of the first melt output channel, the first air output channel, the second melt output channel 25 and the second air output channel 26. A first nozzle 7 and a second nozzle 8 are provided at the bottom of the adapter block 2. The output ends of the first melt output channel and the first air output channel are connected with the first nozzle 7, and the output ends of the second melt output channel 25 and the second air output channel 26 are connected with the second nozzle 8. The spray gun main The body 1 can simultaneously pass two different types of hot melt adhesives, which are independent of each other and do not interfere with each other. The flow rate and pressure of each other can be adjusted independently to achieve precise gluing. The present invention is also provided with a corresponding air channel for auxiliary injection. The pressure of the two air channels can be adjusted separately. The present invention can specifically adjust the injection of hot melt adhesive according to actual conditions, such as spraying a better type of hot melt adhesive at key parts and spraying a general type of hot melt adhesive at other parts. It is environmentally friendly and energy-saving. The first nozzle 7 and the second nozzle 8 can be selected according to actual conditions (commonly used ones are: fiber nozzles, spiral nozzles, strip nozzles, etc.) to achieve the effect of using different types of nozzles in combination. In this embodiment, the first nozzle 7 and the second nozzle 8 are respectively provided with a plurality of them, and multiple nozzles can work at the same time. The first nozzle 7 The first and second nozzles 7 and 8 are respectively arranged on both sides of the bottom of the adapter block 2. The adjacent first nozzles 7 and second nozzles 8 are respectively arranged side by side to realize overlapping glue spraying. The design of side-by-side installation can make different nozzles spray different amounts of glue and blow different amounts of air in the same spray gun and the same production line in the direction of glue spraying, so as to achieve the effect of overlapping glue spraying, so that more points can be sprayed where the composite strength is large, and less points can be sprayed where good softness is required, so as to achieve the purpose of precise control of glue spraying. The present invention integrates multiple functions into one, which can meet multiple application scenarios. In the same spray gun, two or more different materials can be sprayed. For example, one nozzle sprays non-woven fabrics and the other nozzle sprays rubber. They are used in combination in the production process of the same product, and occupy little space.Easy to use, the present invention is based on two channels, can be extended to three channels or more, the nozzle can be set with two or more types, and has strong applicability.

[0035] A first filter chamber 9, a second filter chamber 10, a first control chamber 11 and a second control chamber 12 are provided on the top of the spray gun body 1. The first filter chamber 9 and the first control chamber 11 are respectively connected to the first melt glue input channel 23 in sequence, and the second filter chamber 10 and the second control chamber 12 are respectively connected to the second melt glue input channel in sequence. Specifically, the first glue inlet throat 3 is connected to the top of the first filter chamber 9, and the bottom of the first filter chamber 9 is connected to the input end of the first melt glue input channel 23. The first melt glue input channel 23 is inclined to facilitate the flow and transportation of hot melt glue. The output end of the first melt glue input channel 23 is connected to the side of the first control chamber, and the bottom of the first control chamber is connected to the input end of the first melt glue output channel. The connecting structure of the second filter chamber 10, the second control chamber 12 and the second melt glue input channel is similar. Filters 22 are provided in the first filter chamber 9 and the second filter chamber 10, respectively. The cavity 11 and the second control cavity 12 are respectively provided with a glue spraying valve block 13, and the top of the glue spraying valve block 13 is connected to the solenoid valve 14, and the solenoid valve 14 controls the switch of the glue spraying valve block 13. The hot melt adhesive of the first glue inlet pipe 3 is transported along the first melt input channel 23, first enters the first filter cavity 9, and filters impurities through the filter 22 to avoid blocking the channel or nozzle, and then enters the first control cavity 11. The solenoid valve 14 controls the glue spraying valve block 13 to open the valve body, so that the hot melt adhesive enters the adapter block 2 and is finally sprayed out from the first nozzle 7. The input process of the second glue inlet pipe 4 is the same as that of the first pipe. The side of the spray gun body 1 is provided with a first manual pressure relief device 15 and a second manual pressure relief device 16 which are respectively connected to the first filter cavity 9 and the second filter cavity 10. When removing the filter 22, the first filter cavity 9 or the second filter cavity 10 needs to be depressurized first to avoid the hot melt adhesive from being sprayed out due to high pressure, resulting in scalding accidents.

[0036] The side of the spray gun body 1 is provided with an inclined first heating chamber 17 and a second heating chamber 18, and the first heating chamber 17 and the second heating chamber 18 are respectively provided with a spiral rod heater 19, the first heating chamber 17 is respectively communicated with the first air input channel 24 and the first air output channel, and the second heating chamber 18 is respectively communicated with the second air input channel and the second air output channel 26. Specifically, the output end of the first air input channel 24 is communicated with the side of the first heating chamber 17, and the bottom of the first heating chamber 17 is communicated with the input end of the second air output channel 26. The communication structure of the second heating chamber and the second air input channel and the second air output channel 26 is similar. The spiral rod heater 19 includes a spiral rod body 29 and a third heating The third heater 30 is arranged in the spiral rod body 29. The third heater 30 generates heat to make the spiral rod body 29 generate heat. A spiral rack 31 is spirally wound on the side of the spiral rod body 29. The spiral rack 31 is wound several times to form a conveying channel between adjacent spiral rack circles. The outer diameter of the spiral rack 31 is adapted to the inner diameter of the first heating chamber 17 and the second heating chamber 18. The outer diameter of the spiral rack 31 is transitionally matched with the inner diameter of the first heating chamber 17 and the second heating chamber 18, so that the air flows along the conveying channel after entering the first heating chamber 17 or the second heating chamber 18. The air is heated to hot air by the spiral rod body 29 during the spiral conveying process. The design of the spiral rod body 29 can solve the problem that the air is conveyed too fast but cannot be fully heated.

[0037] The air of the first air pipe assembly 5 is transported along the first air input channel 24, enters the first heating chamber 17 on the way, is heated by the spiral rod heater 19, and then is transported to the adapter block 2, ensuring that the air has a certain temperature when reaching the first nozzle 7 to prevent cooling of the hot melt adhesive. The air transportation of the second air pipe assembly 6 is the same as that of the first air pipe assembly 5.

[0038] A first heater 20 and a first temperature sensor 32 are provided in the adapter block 2, and a first aviation plug 21 is provided on the side of the adapter block 2. The first aviation plug 21 is electrically connected to the first heater 20 and the first temperature sensor 32 respectively. A second heater 33 and a second temperature sensor 34 are provided in the spray gun body 1, and a second aviation plug 35 is provided on the side of the spray gun body 1. The second aviation plug 35 is electrically connected to the second heater 33 and the second temperature sensor 34 respectively. The setting of the first heater 20 and the first temperature sensor 32 heats and controls the temperature of the adapter block 2 so that it has a certain temperature to prevent the hot melt adhesive from condensing when passing through the adapter block. The first aviation plug 21 is used, which is resistant to high temperature and easy to connect. Similarly, the second heater 33 and the second temperature sensor 34 heat and control the temperature of the spray gun body 1. An insulation board 36 is provided between the adapter block 2 and the spray gun body 1. The insulation board 36 separates the adapter block and the spray gun body so that the heat between the two will not be transferred to each other, avoiding the mutual influence between the two resulting in the inability to accurately control the temperature.

[0039] The connecting structure between the adapter block 2 and the first nozzle 7 and the second nozzle 8 is that a first air outlet, a first glue outlet hole, a second air outlet hole 27 and a second glue outlet hole 28 are provided at the bottom of the adapter block 2, the first air outlet hole and the first glue outlet hole are connected to the first air output channel and the first molten glue output channel respectively, the second air outlet hole 27 and the second glue outlet hole 28 are connected to the second air output channel 26 and the second molten glue output channel 25 respectively, the first air outlet hole and the first glue outlet hole are connected to the first nozzle respectively, the second air outlet hole 27 and the second glue outlet hole 28 are connected to the second nozzle 8 respectively, the second air outlet hole 27 is respectively arranged at the four corners of a square with the second glue outlet hole 28 as the center, and the two can cooperate to spray out glue threads of a specific shape, and the positional relationship between the first air outlet and the first glue hole is similar.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A multifunctional hot melt adhesive coating spray gun, characterized in that: The invention comprises a spray gun body (1) and an adapter block (2) arranged at the bottom of the spray gun body (1). The spray gun body (1) is provided with a first melt glue input channel (23), a first air input channel (24), a second melt glue input channel and a second air input channel. The input ends of the first melt glue input channel (23) and the second melt glue input channel are respectively connected to a first glue inlet throat (3) and a second glue inlet throat (4). The input ends of the first air input channel (24) and the second air input channel are respectively connected to a first air pipe assembly (5) and a second air pipe assembly (6). The adapter block (2) is provided with a first melt glue input channel (23), a first air input channel (24), a second melt glue input channel and a second air input channel. The adapter block (2) is provided with a first nozzle (7) and a second nozzle (8) at the bottom thereof; the output ends of the first glue output channel (23), the first air input channel (24), the second glue input channel and the second air input channel are respectively connected to the input ends of the first glue output channel, the first air output channel, the second glue output channel (25) and the second air output channel (26); the output ends of the first glue output channel and the first air output channel are connected to the first nozzle (7); the output ends of the second glue output channel (25) and the first air output channel are connected to the first nozzle (7); the output ends of the second glue output channel (25) and the first air output channel are connected to the first nozzle (8); The output ends of the two air output channels (26) are connected to the second nozzle (8); the top of the spray gun body (1) is provided with a first filter chamber (9), a second filter chamber (10), a first control chamber (11) and a second control chamber (12); the first filter chamber (9) and the first control chamber (11) are respectively connected to the first melt glue input channel (23); the second filter chamber (10) and the second control chamber (12) are respectively connected to the second melt glue input channel; filters (22) are respectively provided in the first filter chamber (9) and the second filter chamber (10); filters (22) are provided in the first control chamber (11) and the second control chamber (12); A glue spray valve block (13) is provided respectively, the top of the glue spray valve block (13) is connected to the electromagnetic valve (14), and the electromagnetic valve (14) controls the switch of the glue spray valve block (13); a first heating chamber (17) and a second heating chamber (18) are provided on the side of the spray gun body (1), and a spiral rod heater (19) is provided in the first heating chamber (17) and the second heating chamber (18), respectively; the first heating chamber (17) is communicated with the first air input channel (24) and the first air output channel, respectively, and the second heating chamber (18) is communicated with the second air input channel and the second air output channel (26), respectively;The output end of the first air input channel (24) is in communication with the side of the first heating chamber (17), and the bottom of the first heating chamber (17) is in communication with the input end of the second air output channel (26). The spiral rod heater (19) comprises a spiral rod body (29) and a third heater (30). The third heater (30) is arranged in the spiral rod body (29). A spiral rack (31) is spirally wound around the side of the spiral rod body (29). The outer diameter of the spiral rack (31) is compatible with the inner diameter of the first heating chamber (17) and the second heating chamber (18).

2. The multifunctional hot melt adhesive coating spray gun according to claim 1, characterized in that: A first manual pressure relief device (15) and a second manual pressure relief device (16) are provided on the side of the spray gun body (1), the first manual pressure relief device (15) and the second manual pressure relief device (16) being communicated with the first filter chamber (9) and the second filter chamber (10) respectively.

3. The multifunctional hot melt adhesive coating spray gun according to claim 1, characterized in that: The first glue inlet throat (3) is connected to the top of the first filter chamber (9), the bottom of the first filter chamber (9) is connected to the input end of the first molten glue input channel (23), the first molten glue input channel (23) is inclined, the output end of the first molten glue input channel (23) is connected to the side of the first control chamber (11), and the bottom of the first control chamber (11) is connected to the input end of the first molten glue output channel.

4. The multifunctional hot melt adhesive coating spray gun according to claim 1, characterized in that: The adapter block (2) is provided with a first heater (20) and a first temperature sensor (32); a first aviation plug (21) is provided on the side of the adapter block (2); the first aviation plug (21) is electrically connected to the first heater (20) and the first temperature sensor (32), respectively; a second heater (33) and a second temperature sensor (34) are provided in the spray gun body (1); a second aviation plug (35) is provided on the side of the spray gun body (1); the second aviation plug (35) is electrically connected to the second heater (33) and the second temperature sensor (34), respectively; and a heat insulation board (36) is provided between the adapter block (2) and the spray gun body (1).

5. The multifunctional hot melt adhesive coating spray gun according to claim 1, characterized in that: The bottom of the adapter block (2) is provided with a first air outlet hole, a first glue outlet hole, a second air outlet hole (27) and a second glue outlet hole (28); the first air outlet hole and the first glue outlet hole are respectively connected to the first air output channel and the first melt glue output channel; the second air outlet hole (27) and the second glue outlet hole (28) are respectively connected to the second air output channel (26) and the second melt glue output channel (25); the first air outlet hole and the first glue outlet hole are respectively connected to the first nozzle (7); the second air outlet hole (27) and the second glue outlet hole (28) are respectively connected to the second nozzle (8).

6. The multifunctional hot melt adhesive coating spray gun according to claim 5, characterized in that: The second air outlet holes (27) are respectively arranged at the four corners of a square with the second glue outlet hole (28) as the center.

7. The multifunctional hot melt adhesive coating spray gun according to claim 1, characterized in that: A plurality of the first nozzles (7) and the second nozzles (8) are provided respectively. The first nozzles (7) and the second nozzles (8) are respectively arranged on both sides of the bottom of the adapter block (2), and adjacent first nozzles (7) and second nozzles (8) are respectively arranged side by side.

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