CN219356603U - Thimble assembly of high-pressure airless spray gun - Google Patents
Thimble assembly of high-pressure airless spray gun Download PDFInfo
- Publication number
- CN219356603U CN219356603U CN202320389667.XU CN202320389667U CN219356603U CN 219356603 U CN219356603 U CN 219356603U CN 202320389667 U CN202320389667 U CN 202320389667U CN 219356603 U CN219356603 U CN 219356603U
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- inclined plane
- thimble
- seal cover
- sealing sleeve
- spring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The ejector pin assembly of the high-pressure airless spray gun is characterized in that the left side of the ejector pin is fixedly connected with an ejector pin head, a spring core and a sealing sleeve are arranged on the ejector pin in a penetrating manner, a first inclined plane is formed at the right end of the spring core, a second inclined plane and a third inclined plane are formed at the left side of the sealing sleeve, and the inclination of the first inclined plane is between the second inclined plane and the third inclined plane; the second inclined plane department of seal cover easily takes place the local deformation of material, make seal cover and thimble realize sealedly, the elastic coefficient of spring can suitably reduce, press the trigger laborsaving during operation, the mesopore size of seal cover also can suitably be greater than the external diameter of thimble, the precision requirement of spare part reduces, processing cost saving, the clearance increase between seal cover and the thimble has reduced the emergence of the unable normal phenomenon that resets of thimble assembly or reset hysteresis that the paint vehicle is detained between the two and lead to, the seal cover during operation, take place automatic compensation after wearing and tearing, can realize sealing by the line contact all the time between seal cover and the spring core, life extension.
Description
Technical Field
The utility model relates to a thimble assembly of a high-pressure airless spray gun.
Background
The high-pressure airless spray gun is a common paint spraying output device, and the principle is that a plunger pump works to convey paint of a charging basket to the high-pressure airless spray gun in a paint flow mode, and then the paint is sprayed out from a nozzle orifice at the front end of a gun head to form spray with a certain width and flow, and a thimble assembly is arranged in the gun head and controls the movement of a thimble by a trigger so as to realize on-off control of a runner of the high-pressure airless spray gun.
The structure of the existing thimble assembly is shown in figure 1, a thimble head is fixedly connected to the left side of the thimble, a spring core and a sealing sleeve are arranged on the thimble in a penetrating way, and the sealing sleeve is tightly held on the outer circumferential surface of the thimble under the elastic action of the spring to realize sealing; the spring core and the sealing sleeve are acted through inclined planes with consistent inclination, so that the sealing performance of the sealing sleeve is guaranteed, the elastic coefficient of the spring is large, the process of manually pressing the trigger is laborious, the middle hole of the sealing sleeve is highly matched with the outer diameter of the thimble in size, the requirement on the machining precision of parts is high, paint can be retained in a gap between the sealing sleeve and the thimble (the gap between the sealing sleeve and the thimble is small), and in the use process, the thimble assembly cannot be reset normally or is reset with hysteresis.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a thimble assembly of a high-pressure airless spray gun.
In order to achieve the above purpose, the utility model provides a thimble assembly of a high-pressure airless spray gun, comprising a thimble, wherein the left side of the thimble is fixedly connected with a thimble head, a spring core and a sealing sleeve are arranged on the thimble in a penetrating way, the spring is elastically supported between the thimble head and the spring core, the right end of the spring core is provided with a first inclined plane, the left side of the sealing sleeve is provided with a second inclined plane and a third inclined plane, the inclination of the first inclined plane is between the second inclined plane and the third inclined plane, and the sealing sleeve is also provided with an O-shaped ring for sealing.
As a further improvement of the present utility model, the angle of the first inclined surface is larger than the second inclined surface, and the angle of the first inclined surface is smaller than the third inclined surface.
As a further improvement of the utility model, the left side of the top needle is also provided with a sealing steel ball.
Compared with the prior art, the utility model has the beneficial effects that: the left side of the sealing sleeve is formed with a second inclined plane and a third inclined plane, and the second inclined plane is easy to generate local deformation of materials, so that the sealing sleeve and the thimble are sealed, the elastic coefficient of the spring can be properly reduced, and the acting force for pressing the trigger is correspondingly reduced during operation, thus saving labor during operation; in addition, the size of the middle hole of the sealing sleeve can be properly larger than the outer diameter of the thimble, the precision requirement of parts is reduced, the processing cost is saved, the gap between the sealing sleeve and the thimble is increased, and the phenomenon that the thimble assembly cannot be reset normally or is reset and delayed due to the retention of paint between the sealing sleeve and the thimble is reduced; in the working process of the sealing sleeve, automatic compensation is performed after abrasion, and sealing can be realized by line contact between the sealing sleeve and the spring core all the time, so that the original surface contact is replaced, and the service life is greatly prolonged.
Drawings
FIG. 1 is a schematic illustration of a thimble assembly of a high pressure airless gun prior to modification;
FIG. 2 is a schematic illustration of the thimble assembly of FIG. 1 mounted to a gun head of a high pressure airless gun;
FIG. 3 is a schematic view of a thimble assembly of the high pressure airless gun of the present utility model;
FIG. 4 is a schematic view of the thimble assembly of FIG. 3 mounted on the gun head of a high pressure airless gun.
In the figure: 1. a thimble; 2. sealing sleeve; 21. a second inclined surface; 23. a third inclined surface; 3. a spring core; 31. a first inclined surface; 4. a spring; 5. a needle head is propped against; 6. sealing the steel balls; 7. an end cap.
Description of the embodiments
As shown in fig. 3 and 4, the thimble assembly of the high-pressure airless spray gun of the embodiment of the utility model comprises a thimble 1, wherein the left side of the thimble 1 is fixedly connected with a thimble head 5, a spring 4, a spring core 3 and a sealing sleeve 2 are arranged on the thimble 1 in a penetrating way, the spring 4 is elastically supported between the thimble head 5 and the spring core 3, a first inclined plane 31 is formed at the right end of the spring core 3, a second inclined plane 21 and a third inclined plane 22 are formed at the left side of the sealing sleeve 2, the inclination of the first inclined plane 31 is between the second inclined plane 21 and the third inclined plane 22, an O-shaped ring for sealing is also arranged on the sealing sleeve 2, the angle of the first inclined plane 31 is larger than the second inclined plane 21, and the angle of the first inclined plane 31 is smaller than the third inclined plane 22; the left side of the ejector pin 5 is also provided with a sealing steel ball 6, the gun head is also internally provided with a valve seat which is acted with the sealing steel ball 6, the sealing steel ball 6 contacts and seals with the valve seat to realize the cutting-off of a flow passage, a trigger is pulled, the trigger is driven to the right end of the ejector pin 1 to drive the ejector pin 1 to move, and the sealing steel ball 6 moves away from the valve seat along with the ejector pin 1 to realize the communication of the flow passage; in the processing process of the thimble head 5, the size of the thimble head 5 can be properly reduced, so that a certain overflow area is formed between the thimble head 5 and the end cover 7, the phenomenon of surge caused by expansion of fluid at the position is avoided, the impact of the fluid on the sealing steel ball 6 is reduced, and the service life is prolonged (in fig. 2, the distance between the thimble head 5 and the end cover 7 is small before improvement, and in fig. 4, the distance between the thimble head 5 and the end cover 7 is increased after improvement).
The left side of the sealing sleeve is formed with a second inclined plane and a third inclined plane, and the second inclined plane is easy to generate local deformation of materials, so that the sealing sleeve and the thimble are sealed, the elastic coefficient of the spring can be properly reduced, and the acting force for pressing the trigger is correspondingly reduced during operation, thus saving labor during operation; in addition, the size of the middle hole of the sealing sleeve can be properly larger than the outer diameter of the thimble, the precision requirement of parts is reduced, the processing cost is saved, the gap between the sealing sleeve and the thimble is increased, and the phenomenon that the thimble assembly cannot be reset normally or is reset and delayed due to the retention of paint between the sealing sleeve and the thimble is reduced; in the working process of the sealing sleeve, automatic compensation is performed after abrasion, and sealing can be realized by line contact between the sealing sleeve and the spring core all the time, so that the original surface contact is replaced, and the service life is greatly prolonged.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (3)
1. The utility model provides a thimble assembly of high pressure airless spray gun, includes a thimble (1), a thimble head (5) has been linked firmly in the left side of thimble (1), wear to be equipped with spring (4), spring core (3) and seal cover (2) on thimble (1), spring (4) elastic support be in between thimble head (5) with spring core (3), its characterized in that: the right-hand member shaping of spring core (3) has first inclined plane (31), the left side shaping of seal cover (2) has second inclined plane (21), third inclined plane (22), the gradient of first inclined plane (31) is between second inclined plane (21) with third inclined plane (22), still be equipped with O shape circle that seals usefulness on seal cover (2).
2. The thimble assembly of a high pressure airless gun according to claim 1, wherein: the angle of the first inclined plane (31) is larger than that of the second inclined plane (21), and the angle of the first inclined plane (31) is smaller than that of the third inclined plane (22).
3. The thimble assembly of a high pressure airless gun according to claim 1, wherein: the left side of the thimble head (5) is also provided with a sealing steel ball (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320389667.XU CN219356603U (en) | 2023-03-06 | 2023-03-06 | Thimble assembly of high-pressure airless spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320389667.XU CN219356603U (en) | 2023-03-06 | 2023-03-06 | Thimble assembly of high-pressure airless spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219356603U true CN219356603U (en) | 2023-07-18 |
Family
ID=87149138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320389667.XU Active CN219356603U (en) | 2023-03-06 | 2023-03-06 | Thimble assembly of high-pressure airless spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219356603U (en) |
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2023
- 2023-03-06 CN CN202320389667.XU patent/CN219356603U/en active Active
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