CN220781028U - Hot melt adhesive gun and hot melt adhesive machine - Google Patents
Hot melt adhesive gun and hot melt adhesive machine Download PDFInfo
- Publication number
- CN220781028U CN220781028U CN202322459949.5U CN202322459949U CN220781028U CN 220781028 U CN220781028 U CN 220781028U CN 202322459949 U CN202322459949 U CN 202322459949U CN 220781028 U CN220781028 U CN 220781028U
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- China
- Prior art keywords
- gun
- glue
- hot melt
- melt adhesive
- cylinder body
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Links
- 239000004831 Hot glue Substances 0.000 title claims abstract description 34
- 239000003292 glue Substances 0.000 claims abstract description 62
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000005507 spraying Methods 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
Abstract
The utility model discloses a hot melt adhesive gun and a hot melt adhesive machine, comprising a gun body, an electromagnetic valve and a cylinder body, wherein an adhesive passage and two air passages are formed in the gun body; the cylinder body is internally provided with a hollow cavity, a piston and a piston rod connected with the piston are arranged in the hollow cavity, a normally closed air outlet and a normally open air outlet of the electromagnetic valve are correspondingly communicated with two air passages in the gun body through an air pipe respectively, the two air passages are correspondingly communicated with the hollow cavities at the front end and the rear end of the piston, a gun nozzle is arranged at the front end of the cylinder body, the gun nozzle is communicated with a glue outlet arranged at the front end of the cylinder body, the glue outlet is communicated with the front end of the hollow cavity, a glue outlet end of a glue passage is communicated with the hollow cavity close to one end of the glue outlet, a spring is sleeved at the rear end of the piston, and the spring pushes the piston rod to enable the front end of the piston rod to extend into the glue outlet and normally close the glue outlet, and the cylinder body is further provided with an adjusting rod which can be rotatably arranged in the rear end of the cylinder body; the utility model has the advantages of convenient glue discharge adjustment and good sealing performance of the gun nozzle.
Description
Technical Field
The utility model relates to the technical field of hot melt adhesive spraying tools, in particular to a hot melt adhesive gun and a hot melt adhesive machine.
Background
The hot melt adhesive machine is mainly used for automatic application equipment for hot melt adhesive spraying, adhesive coating or adhesive injection. Widely used in household articles, automobile industry or woodworking industry. The hot melt adhesive gun comprises an adhesive inlet, a gun nozzle, an electromagnetic valve and a gun body, and is used for spraying the hot melt adhesive from the gun nozzle to objects such as workpieces and the like under the action of air pressure. The hot melt adhesive gun in the prior art has at least one of the following disadvantages: the glue outlet amount is inconvenient to control, the sealing performance of the gun nozzle is poor, glue leakage is easy to occur in a non-working state, and hot melt glue is easy to block in the gun body.
Disclosure of Invention
In order to at least overcome one of the technical problems in the prior art, the utility model provides a hot melt adhesive gun and a hot melt adhesive machine, which are convenient in adhesive output adjustment, good in sealing performance of a gun nozzle and not easy to leak adhesive.
A hot melt adhesive gun comprises a gun body, an electromagnetic valve and a cylinder body, wherein an adhesive passage and two air passages are formed in the gun body; the electromagnetic valve is provided with an air inlet, a normally closed air outlet and a normally open air outlet; the cylinder body is internally provided with a hollow cavity, a piston and a piston rod connected with the piston are arranged in the hollow cavity, a normally closed air outlet and a normally open air outlet of the electromagnetic valve are respectively correspondingly communicated with two air passages in the gun body through an air pipe, the two air passages are correspondingly communicated with the hollow cavities at the front end and the rear end of the piston, a gun nozzle is arranged at the front end of the cylinder body, the gun nozzle is communicated with a glue outlet arranged at the front end of the cylinder body, the glue outlet is communicated with the front end of the hollow cavity, the glue outlet end of the glue passage is communicated with the hollow cavity close to one end of the glue outlet, a spring is sleeved at the rear end of the piston, the spring pushes the piston rod to enable the front end of the piston rod to extend into the glue outlet and normally close the glue outlet, and the cylinder body is rotatably provided with an adjusting rod arranged at the rear end of the cylinder body, and the adjusting rod can extend into the hollow cavity to push the spring to change the elasticity of the spring to be too small.
In some embodiments, the front end of the adjusting rod is in threaded connection with the inside of the rear end of the cylinder body, the locking nut is in threaded connection with the adjusting rod outside the cylinder body, and the adjusting nut is installed at the tail end of the rear end of the adjusting rod.
In some embodiments, a heating element and a temperature probe are arranged in a gun body at the periphery of the glue passage, and a glue inlet joint is arranged at the glue inlet end of the glue passage.
In some embodiments, a fixing seat is installed outside the gun body, a hanging hole is formed in the fixing seat, a limit screw is connected to the side wall of the fixing seat in a threaded mode, and the front end of the limit screw can be screwed into the hanging hole.
In some embodiments, at least one washer and a rod ring are sequentially sleeved on the outer wall of the front end of the piston rod, and the tail end of the front end of the piston rod is conical.
The application also discloses a hot melt adhesive machine, including foretell hot melt adhesive rifle.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a front view of the present application;
fig. 2 is a cross-sectional view at A-A in fig. 1.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-2, a hot melt adhesive gun comprises a gun body 1, an electromagnetic valve 2 and a cylinder body 3, wherein an adhesive passage 4 and two air passages 5 are formed in the gun body 1; the electromagnetic valve 2 is provided with an air inlet 6, a normally closed air outlet 7 and a normally open air outlet 8; the cylinder body 3 is internally provided with a hollow cavity 9, a piston 10 and a piston rod 11 connected with the piston 10 are arranged in the hollow cavity 9, a normally closed air outlet 7 and a normally open air outlet 8 of the electromagnetic valve 2 are correspondingly communicated with two air passages 5 in the gun body 1 through an air pipe 17, the two air passages 5 are correspondingly communicated with the hollow cavity 9 positioned at the front end and the rear end of the piston 10, the front end of the cylinder body 3 is provided with a gun nozzle 12, the gun nozzle 12 is communicated with a glue outlet 14 arranged at the front end of the cylinder body 3, the glue outlet 14 is communicated with the front end of the hollow cavity 9, the glue outlet end of the glue passage 4 is communicated with the hollow cavity 9 close to one end of the glue outlet 14, a spring 15 is sleeved at the rear end of the piston 10, the spring 15 props against the piston rod 11 to enable the front end of the piston rod 11 to extend into the glue outlet 14 and normally close to the glue outlet 14, and the regulating rod 16 can be rotatably arranged in the rear end of the cylinder body 3, and the regulating rod 16 can extend into the hollow cavity 9 to prop against the spring 15 to change the elasticity of the spring to be too small.
When the gun is not in use, gas enters one of the air pipes 17 through the air inlet 6 and the normally open air outlet 8 of the electromagnetic valve 2, then enters the hollow cavity 9 positioned at the rear end of the piston 10 through one of the air passages 5 in the gun body 1, and then pushes the piston 10 and the piston rod 11 to move forwards to seal the glue outlet 14 and the gun nozzle 12, so that glue leakage outside the gun nozzle 12 is avoided; the spring 15 applies pressure on the piston 10 to play a secondary sealing role, and even if no air pressure exists, the leakage of glue to the outside of the gun nozzle 12 can be prevented; when the glue gun is in a working state, the normally open air outlet 8 is closed, the normally closed air outlet 7 is opened, the air pressure pushes the piston 10 and the piston rod 11 to move backwards, the spring 15 is compressed, the glue outlet 14 is opened, and glue can be sprayed out from the gun nozzle 12. The size of the opening of the glue outlet 14 can be changed when the piston 10 is in a working state by changing the pressure exerted by the spring 15 through the adjusting rod 16, so that the glue outlet amount is changed.
In some embodiments, the front end of the adjusting rod 16 is screwed into the rear end of the cylinder 3, the locking nut 18 is screwed on the adjusting rod 16 outside the cylinder 3, and the adjusting nut 19 is installed at the rear end of the adjusting rod 16. When the length of the adjusting rod 16 entering the hollow cavity 9 is changed, the length of the spring 15 can be changed, the elastic force of the spring 15 is too small, and when the elastic force of the spring 15 is large, the front end of the piston rod 11 can enable the glue outlet 14 to be in a normally closed state better when the hot melt glue gun is not used, so that glue liquid is prevented from leaking from the gun nozzle 12; when the hot melt adhesive gun is used, the pressure of the gas supplied by the electromagnetic valve 2 is the same, but when the elastic force of the spring 15 is changed, the range of opening the adhesive outlet 14 of the piston rod 11 with the conical forefront end is also different, so that the adhesive outlet amount of the gun nozzle 12 can be changed. The glue outlet amount is regulated, the regulating rod 16 can be fastened by the locking nut 18 to avoid displacement, and the regulating nut 19 is used for facilitating screwing of the regulating rod 16.
In some embodiments, a heating element 20 and a temperature probe 21 are installed in the gun body 1 at the periphery of the glue passage 4, and a glue inlet joint 22 is installed at the glue inlet end of the glue passage 4. The heating element 20 is used for heating the hot melt adhesive in the adhesive passage 4, avoiding the hot melt adhesive from being blocked in the adhesive passage 4 after being cooled, and the temperature probe 21 is used for detecting the temperature, avoiding overheating and realizing automatic heating or stopping heating. The glue inlet joint 22 is used to facilitate connection to an external glue pump or other component.
In some embodiments, a fixing seat 23 is installed outside the gun body 1, a hanging hole 24 is formed in the fixing seat 23, a limit screw 25 is connected to the side wall of the fixing seat 23 in a threaded manner, and the front end of the limit screw 25 can be screwed into the hanging hole 24. The hanging hole 24 is used for inserting a fixing rod and the like on the machine, and the limit screw 25 is used for locking or unlocking the fixing rod.
In some embodiments, at least one gasket 26 and one rod portion ring 27 are sequentially sleeved on the outer wall of the front end of the piston rod 11, so that the sealing function can be achieved, glue solution can be prevented from flowing to the rear end of the hollow cavity 9, the tail end of the front end of the piston rod 11 is conical, the front end of the piston rod can be matched with the conical surface between the inner walls of the glue outlet 14, and the glue outlet 14 can be better sealed and the glue outlet quantity can be better regulated.
The application also discloses a hot melt adhesive machine, including foretell hot melt adhesive rifle. The hot melt adhesive gun is inserted into the fixing rod of the hot melt adhesive machine through the hanging hole 24 on the fixing seat 23.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A hot melt adhesive gun comprises a gun body, an electromagnetic valve and a cylinder body, wherein an adhesive passage and two air passages are formed in the gun body; the electromagnetic valve is provided with an air inlet, a normally closed air outlet and a normally open air outlet; the cylinder body is internally provided with a hollow cavity, a piston and a piston rod connected with the piston are arranged in the hollow cavity, and the cylinder is characterized in that: the normally closed air outlet and the normally open air outlet of the electromagnetic valve are respectively communicated with two air passages in the gun body through an air pipe, the two air passages are correspondingly communicated with hollow cavities at the front end and the rear end of the piston, a gun nozzle is arranged at the front end of the cylinder body, the gun nozzle is communicated with a glue outlet arranged at the front end of the cylinder body, the glue outlet is communicated with the front end of the hollow cavity, the glue outlet end of the glue passage is communicated with a hollow cavity close to one end of the glue outlet, a spring is sleeved at the rear end of the piston, the spring pushes a piston rod to enable the front end of the piston rod to extend into the glue outlet and normally close the glue outlet, and the electromagnetic valve further comprises an adjusting rod which can be rotatably arranged in the rear end of the cylinder body, and can extend into the hollow cavity to push the spring so as to change the elasticity of the electromagnetic valve to be too small.
2. The hot melt adhesive gun of claim 1, wherein: the front end of the adjusting rod is in threaded connection with the inside of the rear end of the cylinder body, the locking nut is in threaded connection with the adjusting rod outside the cylinder body, and the adjusting nut is arranged at the tail end of the rear end of the adjusting rod.
3. A hot melt adhesive gun as claimed in claim 1 or 2, characterized in that: the gun body at the periphery of the glue passing channel is internally provided with a heating element and a temperature probe, and the glue inlet end of the glue passing channel is provided with a glue inlet joint.
4. A hot melt adhesive gun as set forth in claim 3, wherein: the gun body is provided with a fixing seat outside, a hanging hole is formed in the fixing seat, a limit screw is connected to the side wall of the fixing seat in a threaded mode, and the front end of the limit screw can be screwed into the hanging hole.
5. The hot melt adhesive gun of claim 1, wherein: at least one washer and one rod ring are sequentially sleeved on the outer wall of the front end of the piston rod, and the tail end of the front end of the piston rod is conical.
6. A hot melt adhesive machine is characterized in that: comprising a hot melt adhesive gun according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322459949.5U CN220781028U (en) | 2023-09-11 | 2023-09-11 | Hot melt adhesive gun and hot melt adhesive machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322459949.5U CN220781028U (en) | 2023-09-11 | 2023-09-11 | Hot melt adhesive gun and hot melt adhesive machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220781028U true CN220781028U (en) | 2024-04-16 |
Family
ID=90653680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322459949.5U Active CN220781028U (en) | 2023-09-11 | 2023-09-11 | Hot melt adhesive gun and hot melt adhesive machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220781028U (en) |
-
2023
- 2023-09-11 CN CN202322459949.5U patent/CN220781028U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |