CN214440534U - Hot melt adhesive spray gun with self-cleaning function - Google Patents
Hot melt adhesive spray gun with self-cleaning function Download PDFInfo
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- CN214440534U CN214440534U CN202120253595.7U CN202120253595U CN214440534U CN 214440534 U CN214440534 U CN 214440534U CN 202120253595 U CN202120253595 U CN 202120253595U CN 214440534 U CN214440534 U CN 214440534U
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Abstract
The utility model discloses hot melt adhesive spray gun with self-cleaning function, the application spouts gluey equipment on hot melt adhesive or cold glue, and the spray gun is in the use, regularly inputs lubricating gas or high temperature lubricating oil from washing the inlet port to the shower nozzle inner chamber through washing the air inlet joint, sweeps and washes needle and sealed isolation region, clears away the glue solution and the carbon deposit of sealed isolation region, reduces sealing device's wearing and tearing, prevents to block up and the jamming; meanwhile, the lubricating gas or high-temperature lubricating oil can also have polishing and lubricating effects on the valve needle and metal parts in the spray head, so that the surfaces of the valve needle and the metal parts are kept flat and smooth, and glue solution retention and carbon deposition are further prevented; the service life of the spray head is prolonged, the workload of maintenance and replacement is reduced, the production efficiency is improved, and the equipment cost investment is saved.
Description
Technical Field
The utility model belongs to the technical field of spout gluey equipment manufacturing, concretely relates to hot melt adhesive spray gun with self-cleaning function.
Background
The hot melt adhesive spraying equipment needs to preserve the temperature of the spray gun so that the temperature of the spray gun is kept at an effective working temperature of 150-200 ℃, but the adhesive used by the hot melt adhesive spraying equipment is a chemical polymer which is easy to deteriorate and denature under a high-temperature condition for a long time, so that carbon deposition is generated; the spray gun generally comprises a heating body and a spray head module, wherein the spray head module is a core component of the spray gun and is controlled by an electromagnetic valve to be opened or closed; the structure of the spray head module is mainly divided into an air passage and a glue cavity, the air cavity and the glue cavity are sealed, blocked and separated through a sealing and isolating device, a piston type needle valve in the center of the spray head continuously performs high-speed reciprocating motion during working, the spray head sealing device in the prior art is easily worn by the piston type needle valve in high-speed motion during normal operation, and extrusion force applied to glue liquid during glue spraying work reaches 30-60 kilograms, namely 3-6 MPa, so that the glue liquid is easily spilled into the air passage from the sealed wear part in a reverse direction; the glue solution is easy to accumulate and solidify at the sealing abrasion part to form carbide, so that the sealing abrasion is intensified; and after high-viscosity high-pressure glue solution leaks into the isolation area and is accumulated to form carbon deposition, the glue overflow hole can be blocked, the piston rod is delayed in activity and even blocked, and the electromagnetic valve can be damaged in serious conditions, so that the spray head cannot normally work, the service life of the spray head is influenced, the maintenance and the replacement are frequent, the production efficiency is low, and the equipment cost investment is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems existing in the prior art, the utility model aims to provide a can wash the glue solution and the carbon deposit of getting rid of air cavity and sealed isolating device, extension shower nozzle life improves production efficiency, reduces the maintenance and changes the number of times, practices thrift the cost, has the hot melt adhesive spray gun of self-cleaning function.
The utility model discloses the technical scheme who adopts does:
a hot melt adhesive spray gun with an automatic cleaning function comprises a gun body, wherein a spray head main body is arranged at the front end of the gun body, a gun opening air inlet connector, a gun closing air inlet connector and an electric wire connector column are arranged at the top of the gun body side by side, and a hot melt adhesive supply connector is arranged at the rear end of the gun body; the upper section of the inner cavity of the sprayer main body is provided with an air cavity, the lower section of the inner cavity of the sprayer main body is provided with a glue cavity, the bottom end of the glue cavity is provided with a glue spraying hole, a gun opening air inlet connector is communicated to the air cavity through a gun opening air passage, a gun closing air inlet connector is also communicated to the air cavity through a gun closing air passage, and a hot melt glue supply connector is communicated to the glue cavity through a glue supply passage; a valve needle capable of controlling the on-off of the glue hole penetrates through the center of the inner cavity of the spray head main body; a sealing isolation area is arranged between the air cavity and the rubber cavity, and a sewage discharge hole transversely penetrating through the front side wall is arranged at the front part of the sprayer body; the method is characterized in that: a flushing air inlet transversely penetrating through the rear side wall is formed in the rear part of the spray head main body and communicated with the sewage discharge hole; the gun body is also provided with a flushing air inlet joint which is communicated to a flushing air inlet hole through a flushing air channel.
The flushing air inlet joints are arranged on the upper portion of the gun body side by side and located at the position behind the gun opening air inlet hole, and the flushing air channel extends forwards and downwards from the inner end of the flushing air inlet joint in an inclined mode and is communicated to the flushing air inlet hole.
The flushing air inlet hole and the sewage discharge hole are positioned in the same diameter direction.
The aperture of the sewage discharge hole is larger than that of the flushing air inlet hole.
The top end of the spray head main body is provided with a top cover, the top cover is provided with a communicating cavity in a penetrating mode, the upper section of the inner part of the communicating cavity is provided with an adjusting bolt, and the upper end of the adjusting bolt is matched with an adjusting nut; a spring seat is arranged at the lower section in the communicating cavity, and a spring is arranged between the spring seat and the lower end of the adjusting bolt; the top end of the valve needle is propped against the bottom surface of the spring seat.
A gun closing air inlet is formed in the position, corresponding to the upper end of the air cavity, of the rear side wall of the spray head main body, and a gun opening air inlet is formed in the position, corresponding to the lower end of the air cavity, of the rear side wall of the spray head main body; the upper section of the valve needle is arranged inside the air cavity in a penetrating way and is fixedly provided with a piston; the back side wall of the nozzle main body is provided with a glue inlet hole corresponding to the position of the glue cavity.
The piston comprises a lower ejector block and an upper pressing block, and a dish-shaped sealing washer is arranged between the lower ejector block and the upper pressing block.
And a double-layer disc-shaped sealing washer is arranged between the lower ejector block and the upper pressing block, the double-layer disc-shaped sealing washers are arranged in an opposite manner, and the outer edges of the double-layer disc-shaped sealing washers are respectively coated outside the lower ejector block and the upper pressing block.
An upper sealing isolation device is arranged at the upper end of the sealing isolation area, a lower sealing isolation device is arranged at the lower end of the sealing isolation area, and the upper sealing isolation device and the lower sealing isolation device are both flood plug seals; an outer tooth lock pad is arranged above the upper sealing isolation device, and a bowl-shaped sealing ring is arranged below the upper sealing isolation device.
The lower end of the spray head main body is connected with a valve seat in a sealing mode, an inner cavity of the valve seat is communicated to the glue cavity, and the glue spraying hole is formed in the bottom end of the valve seat.
The utility model has the advantages that:
a hot melt adhesive spray gun with an automatic cleaning function is applied to hot melt adhesive or cold adhesive spraying equipment, and during the use process of the spray gun, lubricating gas or high-temperature lubricating oil is periodically input into an inner cavity of a spray head from a flushing air inlet hole through a flushing air inlet joint to purge and flush a valve needle and a sealing isolation area, so that the adhesive solution and the carbon deposition in the sealing isolation area are removed, the abrasion of a sealing device is reduced, and the blockage and the clamping stagnation are prevented; meanwhile, the lubricating gas or high-temperature lubricating oil can also have polishing and lubricating effects on the valve needle and metal parts in the spray head, so that the surfaces of the valve needle and the metal parts are kept flat and smooth, and glue solution retention and carbon deposition are further prevented; the service life of the spray head is prolonged, the workload of maintenance and replacement is reduced, the production efficiency is improved, and the equipment cost investment is saved.
Drawings
FIG. 1 is a schematic view of the hot melt adhesive spray gun with an automatic cleaning function according to the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a view of the cross-sectional configuration F-F of FIG. 1;
FIG. 5 is an enlarged schematic view of the main body structure of the hot melt adhesive spray gun nozzle of the present invention with an automatic cleaning function;
fig. 6 is a view of the structure of the G-G section of fig. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a preferred embodiment of the present invention provides a hot melt adhesive spray gun with an automatic cleaning function, which is applied to hot melt adhesive or cold adhesive spraying equipment, the basic structure of which is consistent with that of a conventional spray gun, and the hot melt adhesive spray gun is firstly provided with a gun body 100, a spray head main body 200 is fixedly installed at the front end of the gun body 100 along the vertical direction, a gun closing air inlet joint 301, a gun opening air inlet joint 302 and an electric wire joint column 303 are arranged side by side at the top of the gun body 100, a hot melt adhesive supply joint 500 is fixedly installed at the rear end of the gun body 100, the upper section of the inner cavity of the spray head main body 200 is provided with an air cavity, the lower section is provided with an adhesive cavity, the gun opening air inlet joint 302 is communicated to the air cavity through a gun opening air passage, the gun closing air inlet joint 301 is also communicated to the air cavity through a gun closing air passage, and the hot melt adhesive supply joint 500 is communicated to the adhesive cavity through an adhesive supply passage; a power air source for opening and closing is provided for the spray head main body 200 through a gun closing air inlet connector 301 and a gun opening air inlet connector 302, a power supply is provided for the spray gun through an electric wire connector column 303, and a working raw material glue solution is provided for the spray head main body 200 through a hot melt adhesive supply connector 500; arranging a glue spraying hole at the bottom end of the glue cavity, spraying glue solution through the glue spraying hole, and coating the glue solution on the bonding surface; a valve needle 5 penetrates through the center of the inner cavity of the nozzle main body 1 along the vertical direction, and the valve needle 5 blocks or exposes the glue spraying hole through up-and-down movement so as to control the on-off working state of the glue spraying hole; a section of sealing isolation area is arranged between the air cavity and the glue cavity, and the glue solution is isolated through the sealing isolation area to prevent the glue solution from flowing upwards and reversely into the air cavity; a sewage discharge hole 20 is arranged on the front side wall of the sprayer body 1 corresponding to the middle part of the sealed isolation area, the sewage discharge hole 20 is transversely arranged, namely, an inner cavity of the sprayer body penetrates through the sprayer body from top to bottom along the vertical direction, the axis of the sewage discharge hole is mutually vertical to the axis of the inner cavity of the sprayer body, and the sewage discharge hole transversely penetrates through the front side wall of the sprayer body along the horizontal direction and is communicated with the sealed isolation area; the key technical proposal of the utility model is that a transverse flushing air inlet 17 is arranged on the rear side wall of the spray head main body, and the flushing air inlet 17 penetrates through the rear side wall of the spray head main body from outside to inside and is communicated to the sealing isolation area of the inner cavity of the spray head main body, thereby achieving the purpose of mutually communicating with the sewage discharge hole; a flushing air inlet joint 303 is fixedly arranged on the gun body 100, a flushing air channel is arranged in the gun body 100, and the flushing air inlet joint 303 is communicated to a flushing air inlet hole 17 through the flushing air channel;
the glue spraying operation is suspended after the spray gun normally operates for a period of time, the lubricating gas or the high-temperature lubricating oil is periodically input through the flushing air inlet, and the lubricating gas or the high-temperature lubricating oil enters the sealed isolation area along the flushing air inlet and then flows out of the sewage discharge hole without additionally arranging an air outlet, so that the structure is simple and compact; only one drilling procedure is needed to be added on the basis of the original manufacturing and processing technology, so that the technology is simplified, and the cost investment is low; the lubricating gas or high-temperature lubricating oil sweeps and washes the valve needle and the sealing isolation area, removes glue solution and carbon deposition in the sealing isolation area, reduces the abrasion of the sealing device, and prevents blockage and clamping stagnation; meanwhile, the lubricating gas or high-temperature lubricating oil can also have polishing and lubricating effects on the valve needle and metal parts in the spray head, so that the surfaces of the valve needle and the metal parts are kept flat and smooth, and glue solution retention and carbon deposition are further prevented; the service life of the spray head is prolonged, the workload of maintenance and replacement is reduced, the production efficiency is improved, and the equipment cost investment is saved.
Specifically, the glue spraying can be stopped every 2-3 hours, and the lubricating gas or the high-temperature lubricating oil is input through the flushing air inlet hole for flushing; the flushing can also be carried out when the operator has a rest after working for half a day each time; practice proves, the tradition does not have the flushing hole, can not regularly carry out the shower nozzle life who washes to needle and sealed isolation region only several months, but uses the technical structure of the utility model, through washing inlet port periodic input lubricating gas or high temperature lubricating oil and wash needle and sealed isolation region, the life of shower nozzle can reach 1 ~ 3 years, and maintenance work is insistently gone on, can exempt from to change for the whole life even.
Further, the flushing air inlet joint 303 is also arranged at the top of the gun body side by side, specifically, the flushing air inlet joint is located between the rear side of the gun opening air inlet hole 302 and the electric wire joint column 303, and the flushing air channel extends from the inner end of the flushing air inlet joint 303 in the gun body 100 along the direction inclined forwards and downwards and is communicated to the flushing air inlet hole 17.
The flushing air inlet hole 17 and the sewage discharge hole 20 are located on the same diameter direction, the aperture of the flushing air inlet hole is set to be smaller than that of the sewage discharge hole, and the flushing effect is improved.
The structure of the spray head main body is as follows: a top cover 6 is arranged at the top end of the spray head main body 1, a communicating cavity is also arranged in the top cover 6 in a penetrating manner, an adjusting bolt 15 is arranged at the upper section in the communicating cavity, and an adjusting nut 14 is sleeved at the upper end of the adjusting bolt 15 in a matching manner; the top end of the valve needle 5 is abutted against the bottom surface of the spring seat 10, and the initial installation position of the valve needle is set through an adjusting bolt 15; a spring seat 10 is arranged at the lower section in the communicating cavity, a spring 2 is sleeved between the spring seat 10 and the lower end of the adjusting bolt 15, and the gap error is adapted through the spring 2.
A gun closing air inlet 13 is arranged on the rear side wall of the nozzle body 1 corresponding to the upper end of the air cavity, a gun opening air inlet 11 is arranged on the rear side wall of the nozzle body corresponding to the lower end of the air cavity, and the upper section of the valve needle 5 penetrates through the air cavity and is fixedly provided with a piston; a glue inlet hole 12 is arranged on the rear side wall of the spray head main body 1 corresponding to the position of the glue cavity; the lower ends of the gun closing air inlet joint 301, the gun opening air inlet joint 302 and the flushing air inlet joint 303 are respectively matched and inserted into the gun body 100 for a distance, the inserted distance is consistent with the distance from the center line of the gun closing air inlet hole 13 to the top of the gun body, the gun closing air inlet joint 301 is directly communicated to the gun closing air inlet hole 13 through a horizontal gun closing air passage, and therefore the gun opening air passage is communicated to the upper end of an air cavity through the gun closing air inlet hole 13; the gun opening air inlet connector 302 is communicated to the lower end of the air cavity through a section of gun opening air passage which inclines forwards from top to bottom through a gun opening air inlet hole 11, and the hot melt adhesive supply connector 500 is communicated to the adhesive cavity through a section of combined adhesive supply channel which extends in the horizontal direction and a section of combined adhesive supply channel which slightly inclines upwards through an adhesive inlet hole 12; when the hot melt adhesive supply connector 500 is started, the glue solution is input from the glue inlet channel through the glue inlet, and the glue solution is sprayed out from the glue inlet to spray and brush the working surface; when the gun closing air inlet joint 301 is started to work, air enters the air cavity from the gun closing air path through the gun closing air inlet hole 11, the piston is pressed, the valve needle moves downwards to block the glue spraying hole, and the spray head stops working.
The piston comprises a lower top block 9 and an upper pressing block 8, and a dish-shaped sealing washer 3 is arranged between the lower top block 9 and the upper pressing block 8 to form a piston structure; further, a pair of disc-shaped sealing gaskets 3 is arranged between the lower ejector block 9 and the upper pressing block 8 to form a double-layer disc-shaped sealing gasket structure, the pair of disc-shaped sealing gaskets are arranged in a back-to-back mode, the outer edges of the double-layer disc-shaped sealing gaskets are respectively coated outside the lower ejector block 9 and the upper pressing block 8, and when the piston moves up and down, the piston moves along the inner surface of the air cavity through the outer edges of the double-layer disc-shaped sealing gaskets.
The upper end of the sealing isolation area is provided with an upper sealing isolation device 18, the lower end of the sealing isolation area is provided with a lower sealing isolation device 16, the upper sealing isolation device 18 and the lower sealing isolation device 16 both adopt a universal plug seal, the universal plug seal can still protect good sealing performance and mechanical performance under the condition that the valve needle reciprocates at a high speed for a long time, and the service life is long; an outer tooth lock pad is arranged above the upper sealing isolation device, and a bowl-shaped sealing ring 4 is arranged below the upper sealing isolation device, so that the structural stability is further improved.
The lower end of the spray head main body 1 is hermetically connected with a valve seat 7, the inner cavity of the valve seat 7 is communicated to a glue cavity, and a glue spraying hole is formed in the bottom end of the valve seat.
Finally, sealing rings are respectively arranged at the openings of the flushing air inlet 17, the glue inlet 12, the gun opening air inlet 11 and the gun closing air inlet 13, and the air passages and the channels of the spray head main body 200 and the gun body 100 are hermetically connected through the sealing rings, so that the sealing performance is ensured.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. A hot melt adhesive spray gun with an automatic cleaning function comprises a gun body, wherein a spray head main body is arranged at the front end of the gun body, a gun opening air inlet connector, a gun closing air inlet connector and an electric wire connector column are arranged at the top of the gun body side by side, and a hot melt adhesive supply connector is arranged at the rear end of the gun body; the upper section of the inner cavity of the sprayer main body is provided with an air cavity, the lower section of the inner cavity of the sprayer main body is provided with a glue cavity, the bottom end of the glue cavity is provided with a glue spraying hole, a gun opening air inlet connector is communicated to the air cavity through a gun opening air passage, a gun closing air inlet connector is also communicated to the air cavity through a gun closing air passage, and a hot melt glue supply connector is communicated to the glue cavity through a glue supply passage; a valve needle capable of controlling the on-off of the glue hole penetrates through the center of the inner cavity of the spray head main body; a sealing isolation area is arranged between the air cavity and the rubber cavity, and a sewage discharge hole transversely penetrating through the front side wall is arranged at the front part of the sprayer body; the method is characterized in that: a flushing air inlet transversely penetrating through the rear side wall is formed in the rear part of the spray head main body and communicated with the sewage discharge hole; the gun body is also provided with a flushing air inlet joint which is communicated to a flushing air inlet hole through a flushing air channel.
2. The hot melt adhesive spray gun with self-cleaning function as claimed in claim 1, wherein: the flushing air inlet joints are arranged on the upper portion of the gun body side by side and located at the position behind the gun opening air inlet hole, and the flushing air channel extends forwards and downwards from the inner end of the flushing air inlet joint in an inclined mode and is communicated to the flushing air inlet hole.
3. The hot melt adhesive spray gun with self-cleaning function as recited in claim 2, wherein: the flushing air inlet hole and the sewage discharge hole are positioned in the same diameter direction.
4. The hot melt adhesive spray gun with the automatic cleaning function according to any one of claims 1 to 3, wherein: the aperture of the sewage discharge hole is larger than that of the flushing air inlet hole.
5. The hot melt adhesive spray gun with self-cleaning function as recited in claim 4, wherein: the top end of the spray head main body is provided with a top cover, the top cover is provided with a communicating cavity in a penetrating mode, the upper section of the inner part of the communicating cavity is provided with an adjusting bolt, and the upper end of the adjusting bolt is matched with an adjusting nut; a spring seat is arranged at the lower section in the communicating cavity, and a spring is arranged between the spring seat and the lower end of the adjusting bolt; the top end of the valve needle is propped against the bottom surface of the spring seat.
6. The hot melt adhesive spray gun with self-cleaning function as recited in claim 5, wherein: a gun closing air inlet is formed in the position, corresponding to the upper end of the air cavity, of the rear side wall of the spray head main body, and a gun opening air inlet is formed in the position, corresponding to the lower end of the air cavity, of the rear side wall of the spray head main body; the upper section of the valve needle is arranged inside the air cavity in a penetrating way and is fixedly provided with a piston; the back side wall of the nozzle main body is provided with a glue inlet hole corresponding to the position of the glue cavity.
7. The hot melt adhesive spray gun with self-cleaning function as recited in claim 6, wherein: the piston comprises a lower ejector block and an upper pressing block, and a dish-shaped sealing washer is arranged between the lower ejector block and the upper pressing block.
8. The hot melt adhesive spray gun with self-cleaning function as recited in claim 7, wherein: and a double-layer disc-shaped sealing washer is arranged between the lower ejector block and the upper pressing block, the double-layer disc-shaped sealing washers are arranged in an opposite manner, and the outer edges of the double-layer disc-shaped sealing washers are respectively coated outside the lower ejector block and the upper pressing block.
9. The hot melt adhesive spray gun with self-cleaning capability of claim 8, wherein: an upper sealing isolation device is arranged at the upper end of the sealing isolation area, a lower sealing isolation device is arranged at the lower end of the sealing isolation area, and the upper sealing isolation device and the lower sealing isolation device are both flood plug seals; an outer tooth lock pad is arranged above the upper sealing isolation device, and a bowl-shaped sealing ring is arranged below the upper sealing isolation device.
10. The hot melt adhesive spray gun with self-cleaning function as claimed in claim 9, wherein: the lower end of the spray head main body is connected with a valve seat in a sealing mode, an inner cavity of the valve seat is communicated to the glue cavity, and the glue spraying hole is formed in the bottom end of the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120253595.7U CN214440534U (en) | 2021-01-28 | 2021-01-28 | Hot melt adhesive spray gun with self-cleaning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120253595.7U CN214440534U (en) | 2021-01-28 | 2021-01-28 | Hot melt adhesive spray gun with self-cleaning function |
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| CN214440534U true CN214440534U (en) | 2021-10-22 |
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| CN202120253595.7U Active CN214440534U (en) | 2021-01-28 | 2021-01-28 | Hot melt adhesive spray gun with self-cleaning function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114154272A (en) * | 2021-12-24 | 2022-03-08 | 广州涂涂乐科技有限公司 | Automatic cleaning control method and system applied to glue spraying equipment |
-
2021
- 2021-01-28 CN CN202120253595.7U patent/CN214440534U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114154272A (en) * | 2021-12-24 | 2022-03-08 | 广州涂涂乐科技有限公司 | Automatic cleaning control method and system applied to glue spraying equipment |
| CN114154272B (en) * | 2021-12-24 | 2022-06-21 | 广州涂涂乐科技有限公司 | Automatic cleaning control method and system applied to glue spraying equipment |
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