CN213825618U - Injection valve with stepless regulation of stroke and resilience force - Google Patents
Injection valve with stepless regulation of stroke and resilience force Download PDFInfo
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- CN213825618U CN213825618U CN202022037344.3U CN202022037344U CN213825618U CN 213825618 U CN213825618 U CN 213825618U CN 202022037344 U CN202022037344 U CN 202022037344U CN 213825618 U CN213825618 U CN 213825618U
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Abstract
The utility model discloses a stroke and resilience force infinitely variable control's injection valve aims at overcoming the weak point that prior art is difficult to better compromise the movable stroke of firing pin and two regulation operations of spring resilience force, provides one kind and can conveniently carry out the movable stroke of firing pin and adjust the spring resilience force, simultaneously the spring adjustment in-process the unaffected stroke of the movable stroke of firing pin and resilience force infinitely variable control's injection valve. The structure of the air-supply valve comprises a valve body, a firing pin and a spring, wherein a containing cavity is arranged in the valve body, the top end of the firing pin extends to the containing cavity and is provided with a piston, a stroke adjusting sleeve is movably connected inside the containing cavity, the spring is arranged in the stroke adjusting sleeve, an adjusting rod capable of axially moving along the stroke adjusting sleeve is arranged inside the stroke adjusting sleeve, the adjusting rod is provided with a limiting piece for jacking the top end of the spring, the valve body is provided with an air delivery structure for delivering air into the containing cavity, and the top of the valve body is provided with an adjusting mechanism for adjusting the positions of the stroke adjusting sleeve and the adjusting rod.
Description
Technical Field
The utility model relates to an automatic change point and glue equipment technical field, especially relate to an injection valve that point machine was used.
Background
The dispensing system is a process device widely applied to the product production field, and the application range of the dispensing system covers the processes of bonding, filling, coating, sealing, filling, dropping, scribing, gluing and the like of products. The dispensing injection valve is a core component of a dispensing system and has a decisive influence on the flow rate, flow speed, appearance and the like of dispensing.
The dispensing type injection valve in the prior art has the following common technical scheme: the valve body is internally provided with a firing pin, a spring is abutted above the firing pin, the valve body is also provided with a vent, the firing pin pushes the firing pin to move upwards through air inflow of the vent, the spring is compressed, then air is exhausted, the spring pushes the firing pin to move downwards, the firing pin is driven to move up and down, and glue in the valve body is pushed out through the up-and-down movement of the firing pin to spray glue.
Meanwhile, in order to meet the universality of the injection valve, a certain adjustable function is required. The stroke of the movement of the striker determines the flow rate of each dispensing, and the adjustment of the movable stroke of the striker influences the size of the dispensing point. The resilience force of the spring directly determines the propelling force of the firing pin, and the resilience force of the spring needs to be adjusted according to different glue viscosities of different types. One of the spring-back force adjusting schemes is to replace springs with different performances, but the injection valve structure needs to be disassembled, so that the operation is troublesome; the other is to adjust the resilience of the spring by adjusting the compression amount of the spring, but the movable stroke of the striker is changed during adjustment, and the movable stroke of the striker is a more critical process parameter, so that the movable stroke of the striker and the compression amount of the spring need to be adjusted repeatedly, and the operation is very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the regulatory function of the formula injection valve is glued to point among the prior art, be difficult to the better weak point of taking into account two regulation operations of the movable stroke of firing pin and spring resilience force, provide one kind and can conveniently carry out the movable stroke of firing pin and adjust the spring resilience force, simultaneously spring accommodation process in the movable stroke of firing pin not influenced stroke and the injection valve of the stepless regulation of resilience force.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to an injection valve with stepless regulation of stroke and resilience force, which comprises a valve body, a firing pin and a spring, a glue storage cavity for containing glue is arranged in the valve body, a middle hole extending along the central axis of the valve body is arranged in the valve body, the firing pin is arranged in the middle hole and is connected with the valve body in a sliding way, an accommodating cavity is arranged in the valve body, the top end of the firing pin extends to the accommodating cavity and is provided with a piston, a stroke adjusting sleeve is movably connected in the accommodating cavity, the lower end of the stroke adjusting sleeve is positioned above the piston, the spring is arranged in the stroke adjusting sleeve, the stroke adjusting sleeve is internally provided with an adjusting rod capable of axially moving along the stroke adjusting sleeve, the adjusting rod is provided with a limiting part jacking against the top end of the spring, the valve body is provided with a gas transmission structure for transmitting gas into the accommodating cavity, and the top of the valve body is provided with an adjusting mechanism for adjusting the positions of the stroke adjusting sleeve and the adjusting rod.
The technical scheme of the utility model wherein the firing pin is by piston drive, therefore the movable stroke of piston is the movable stroke of firing pin promptly. The movable space of the piston is positioned in the accommodating cavity and limited between the stroke adjusting sleeve and the bottom of the accommodating cavity, so that the movable stroke of the needle can be adjusted through the distance between the stroke adjusting sleeve and the bottom of the accommodating cavity. The two ends of the spring are respectively abutted by the limiting piece and the piston, and the adjusting rod can axially move along the stroke adjusting sleeve. Therefore, the position of the limiting piece can be adjusted through the adjusting rod, so that the compression amount of the spring is adjusted, and the resilience force of the spring to the firing pin is further adjusted. Meanwhile, the relative position of the stroke adjusting sleeve and the accommodating cavity cannot be influenced, and the adjustment of the movable stroke of the firing pin cannot be interfered.
Preferably, a piston is arranged at the top end of the firing pin, and a gasket is arranged at the top of the piston.
Preferably, the gas transmission structure comprises an annular gas outlet groove and a gas hole which are arranged at the bottom of the accommodating cavity, the gas outlet groove is arranged around the middle hole, and two ends of the gas hole are respectively communicated with the annular groove and the outside of the valve body.
The air hole and the air outlet groove can be used for inflating the accommodating cavity and jacking the piston by using air pressure. The piston moves upwards to compress the spring, and after the air hole exhausts air, the resilience force of the spring drives the piston to move downwards, so that the reciprocating motion of the firing pin is realized.
Preferably, the limiting piece is an annular convex structure arranged around the side face of the adjusting rod, and the top end of the adjusting rod is in threaded connection with the stroke adjusting sleeve.
Preferably, the top end of the stroke adjusting sleeve is exposed out of the top of the valve body, the stroke adjusting sleeve is in threaded connection with the valve body, the adjusting mechanism comprises an adjusting nut, the adjusting nut is fixedly connected with the top of the stroke adjusting sleeve, a through hole is formed in the adjusting nut, the stroke adjusting sleeve is provided with a top end opening, and the top end of the adjusting rod is located in the top end opening of the stroke adjusting sleeve and is provided with an inner hexagonal counter bore.
The adjusting rod is in threaded connection with the stroke adjusting sleeve, the adjusting rod can be rotated through a tool by utilizing the inner hexagonal counter bore, the relative position of the adjusting rod and the stroke adjusting sleeve is adjusted, and therefore the position of the limiting piece in the accommodating groove is adjusted to control the compression amount of the spring. When the adjusting nut is rotated, the stroke adjusting sleeve is pushed to move due to the threaded connection mode of the stroke adjusting sleeve and the valve body, so that the movable stroke of the striker is adjusted.
Preferably, the valve body comprises an outer sleeve and a base, the glue storage cavity and the middle hole are formed in the base, and the bottom end of the outer sleeve is sleeved at the top of the base.
Preferably, the top end of the stroke adjusting sleeve is exposed out of the top of the valve body, the adjusting mechanism comprises an adjusting nut, a threaded through hole is formed in the adjusting nut, the top end of the stroke adjusting sleeve is in threaded connection with the threaded through hole, the stroke adjusting sleeve is provided with a top end opening, the top end of the adjusting rod is located in the top end opening of the stroke adjusting sleeve and is provided with an inner hexagonal counter bore, a limiting convex rib axially extending along the stroke adjusting sleeve is arranged on the outer side of the stroke adjusting sleeve, and a sliding groove corresponding to the limiting convex rib is formed in the inner side of the outer sleeve.
The adjusting rod is in threaded connection with the stroke adjusting sleeve, the adjusting rod can be rotated through a tool by utilizing the inner hexagonal counter bore, the relative position of the adjusting rod and the stroke adjusting sleeve is adjusted, and therefore the position of the limiting piece in the accommodating groove is adjusted to control the compression amount of the spring. When the adjusting nut is rotated, the stroke adjusting sleeve is pushed to move due to the threaded connection mode of the threaded through hole and the stroke adjusting sleeve, so that the movable stroke of the striker is adjusted. Meanwhile, because the two adjusting modes are realized through the thread structures, the position can be locked by stopping rotating the adjusting rod or the stroke adjusting sleeve, and stepless adjustment is realized.
Preferably, the lower end edge of the stroke adjusting sleeve is provided with a flanging extending outwards, and the flanging is positioned below the lower end of the outer sleeve.
Preferably, the outer sleeve has a stroke adjustment dial at its tip.
Preferably, the top end opening of the stroke adjusting sleeve is of an inner hexagonal structure.
Therefore, the utility model discloses following beneficial effect has: (1) the movable stroke of the firing pin and the resilience force of the spring can be conveniently adjusted; (2) the movable stroke of the firing pin is not influenced in the spring adjusting process; (3) the movable stroke adjustment of the firing pin and the resilience force adjustment of the spring are both in a stepless adjustment mode.
Drawings
Fig. 1 is a schematic structural view of a stroke and resilience force stepless-adjustable injection valve of the utility model.
Fig. 2 is a sectional structural view of an embodiment of the injection valve of the present invention in which stroke and resilient force are steplessly adjusted.
Fig. 3 is a sectional structural view of another embodiment of the injection valve of the present invention in which stroke and return force are steplessly adjusted.
The figure is marked with: 1. a valve body; 101. an outer sleeve; 102. a base; 103. a glue storage cavity; 104. a mesopore; 105. An accommodating cavity; 106. an air outlet groove; 107. air holes; 108. an anti-abrasion sleeve; 2. a striker; 3. a piston; 301. A gasket; 4. a spring; 5. a stroke adjusting sleeve; 501. limiting convex ribs; 6. an adjusting lever; 601. a limiting member; 602. an inner hexagonal counter bore; 7. adjusting the nut; 8. and a stroke adjusting dial.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and fig. 2, the injection valve of stepless stroke and resilience adjustment of the present invention comprises a valve body 1, a striker 2 and a spring 4, wherein a glue storage cavity 103 for containing glue is arranged inside the valve body 1, a central hole 104 extending along the central axis of the valve body 1 is arranged inside the valve body 1, the striker 2 is arranged in the central hole 104 and slidably connected with the valve body 1, an accommodating cavity 105 is arranged in the valve body 1, the top end of the striker 2 extends to the accommodating cavity 105 and is provided with a piston 3, a stroke adjusting sleeve 5 is movably connected inside the accommodating cavity 105, the lower end of the stroke adjusting sleeve 5 is located above the piston 3, the spring 4 is arranged in the stroke adjusting sleeve 5, an adjusting rod 6 capable of moving axially along the stroke adjusting sleeve 5 is arranged inside the stroke adjusting sleeve 5, the adjusting rod 6 is provided with a limiting part 601 for jacking up and pressing the top end of the spring 4, the valve body 1 is provided with a gas transmission structure for transmitting gas into the accommodating cavity 105, the top of the valve body 1 is provided with an adjusting mechanism for adjusting the positions of a stroke adjusting sleeve 5 and an adjusting rod 6.
The valve body 1 comprises an outer sleeve 101 and a seat 102. The glue storage cavity 103 and the central hole 104 are arranged on the base 102. The top of the base 102 is provided with an open cavity, and the bottom end of the outer sleeve 101 is inserted into the cavity and is in threaded connection with the base 102. At this time, the inner space of the outer sleeve 101 and the cavity in the base 102 are communicated to form a structure of the accommodating cavity 105. The top of the base 102 is sleeved with the bottom end of the outer sleeve 101. The stroke adjusting dial 8 is arranged at the top end of the outer sleeve 101. The lower end edge of the stroke adjusting sleeve 5 is provided with a flanging extending outwards, and the flanging is positioned below the lower end of the outer sleeve 101.
The top end of the firing pin 2 is provided with a piston 3, and the top of the piston 3 is provided with a gasket 301. An abrasion-proof sleeve 108 is embedded in the bottom central hole 104 of the accommodating cavity 105.
The gas transmission structure comprises an annular gas outlet groove 106 and a gas hole 107, the annular gas outlet groove 106 is formed in the bottom of the accommodating cavity 105, the gas outlet groove 106 is arranged around the middle hole 104, and two ends of the gas hole 107 are respectively communicated with the annular groove and the outside of the valve body 1. The air can be filled into the accommodating cavity 105 through the air hole 107 and the air outlet groove 106, and the piston 3 is lifted up by air pressure. The piston 3 moves upwards to compress the spring 4, and after the air hole 107 is exhausted, the resilience force of the spring 4 drives the piston 3 to move downwards, so that the reciprocating motion of the firing pin 2 is realized.
The limiting member 601 is an annular protrusion structure arranged around the side surface of the adjusting rod 6, and the top end of the adjusting rod 6 is in threaded connection with the stroke adjusting sleeve 5.
In one embodiment of the present application, as shown in fig. 2, the top end of the stroke adjustment sleeve 5 is exposed to the top of the outer sleeve 101 of the valve body 1. The adjusting mechanism comprises an adjusting nut 7, a thread through hole is formed in the adjusting nut 7, and the part of the top of the stroke adjusting sleeve 5, which is exposed out of the outer sleeve 101, is in threaded connection with the thread through hole. The stroke adjusting sleeve 5 is provided with a top end opening, and the top end of the adjusting rod 6 is positioned in the top end opening of the stroke adjusting sleeve 5 and is provided with an inner hexagonal counter bore 602. The top end opening of the stroke adjusting sleeve 5 is of an inner hexagonal structure. The outer side of the stroke adjusting sleeve 5 is provided with a limiting convex rib 501 extending along the axial direction of the stroke adjusting sleeve, and the inner side of the outer sleeve is provided with a sliding groove corresponding to the limiting convex rib.
The upper end of the adjusting rod 6 is inserted into the stroke adjusting sleeve 5 and is in threaded connection with the stroke adjusting sleeve 5, the adjusting rod 6 can be rotated by a tool through the inner hexagonal counter bore 602, the relative position of the adjusting rod 6 and the stroke adjusting sleeve 5 is adjusted, and therefore the compression amount of the position control spring 4 of the limiting piece 601 in the accommodating groove is adjusted. When the adjustment nut 7 is rotated, the stroke adjustment sleeve 5 is pushed to move due to the threaded connection between the threaded through hole and the stroke adjustment sleeve 5, thereby adjusting the movable stroke of the striker 2. Meanwhile, because the two adjusting modes are realized through the thread structures, the position can be locked by stopping rotating the adjusting rod 6 or the stroke adjusting sleeve 5, and stepless adjustment is realized. The stroke adjustment sleeve 5 can also be rotationally adjusted by means of a tool using a socket head configuration.
In another embodiment of the present application, as shown in fig. 3, the top end of the stroke adjusting sleeve is exposed from the top of the valve body, the stroke adjusting sleeve is in threaded connection with the valve body, the adjusting mechanism includes an adjusting nut, the adjusting nut is fixedly connected to the top of the stroke adjusting sleeve, a through hole is formed in the adjusting nut, the stroke adjusting sleeve is provided with a top end opening, and the top end of the adjusting rod is located in the top end opening of the stroke adjusting sleeve and is provided with an inner hexagonal counterbore. According to the scheme, when the adjusting nut is rotated, the stroke adjusting sleeve is pushed to move due to the threaded connection mode of the stroke adjusting sleeve and the valve body, so that the movable stroke of the striker is adjusted.
The technical scheme of the utility model wherein firing pin 2 is by piston 3 driven, therefore the movable stroke of piston 3 is firing pin 2's movable stroke promptly. The diameter of the lower end of the stroke adjusting sleeve 5 is smaller than that of the piston 3 to play a limiting role. The activity space of piston 3 is located in housing cavity 105 and is limited between stroke adjusting sleeve 5 and the bottom of housing cavity 105, so that the movable stroke of the needle can be adjusted by the distance between stroke adjusting sleeve 5 and the bottom of housing cavity 105. The spring 4 is abutted by the stopper 601 and the piston 3 at both ends thereof, and the adjusting rod 6 is axially movable along the stroke adjusting sleeve 5. Therefore, the position of the limiting member 601 can be adjusted by the adjusting rod 6, so that the compression amount of the spring 4 is adjusted, and the resilience force of the spring 4 to the striker 2 is further adjusted. While not affecting the relative positions of the stroke adjusting sleeve 5 and the housing cavity 105 and not interfering with the adjustment of the movable stroke of the striker 2.
Claims (10)
1. A stroke and resilience force stepless regulation injection valve comprises a valve body, a firing pin and a spring, wherein a glue storage cavity for containing glue is arranged inside the valve body, a middle hole extending along the central axis of the valve body is arranged inside the valve body, the firing pin is arranged in the middle hole and is in sliding connection with the valve body, it is characterized in that the valve body is internally provided with a containing cavity, the top end of the firing pin extends to the containing cavity and is provided with a piston, the inside of the containing cavity is movably connected with a stroke adjusting sleeve, the lower end of the stroke adjusting sleeve is positioned above the piston, a spring is arranged in the stroke adjusting sleeve, the stroke adjusting sleeve is internally provided with an adjusting rod capable of axially moving along the stroke adjusting sleeve, the adjusting rod is provided with a limiting part jacking against the top end of the spring, the valve body is provided with a gas transmission structure for transmitting gas into the accommodating cavity, and the top of the valve body is provided with an adjusting mechanism for adjusting the positions of the stroke adjusting sleeve and the adjusting rod.
2. The injection valve with stepless stroke and resilience regulation as claimed in claim 1, wherein the top end of the firing pin is provided with a piston, and the top of the piston is provided with a gasket.
3. The injection valve with stepless stroke and resilience regulation as claimed in claim 1, wherein the gas transmission structure comprises an annular gas outlet groove and a gas hole which are arranged at the bottom of the accommodating cavity, the gas outlet groove is arranged around the central hole, and two ends of the gas hole are respectively communicated with the annular groove and the outside of the valve body.
4. The injection valve with stepless stroke and resilience regulation as claimed in claim 1, wherein the limiting member is an annular protrusion structure disposed around the side surface of the adjusting rod, and the top end of the adjusting rod is in threaded connection with the stroke adjusting sleeve.
5. The injection valve with stepless stroke and resilience regulation as claimed in claim 1, wherein the top end of the stroke adjusting sleeve is exposed out of the top of the valve body, the stroke adjusting sleeve is in threaded connection with the valve body, the adjusting mechanism comprises an adjusting nut, the adjusting nut is fixedly connected with the top of the stroke adjusting sleeve, a through hole is formed in the adjusting nut, the stroke adjusting sleeve is provided with a top end opening, and the top end of the adjusting rod is located in the top end opening of the stroke adjusting sleeve and is provided with an inner hexagonal counter bore.
6. The injection valve with stepless stroke and resilience regulation as claimed in claim 1, wherein the valve body comprises an outer sleeve and a base, the glue storage cavity and the middle hole are arranged on the base, and the top of the base is sleeved with the bottom end of the outer sleeve.
7. The injection valve with stepless stroke and resilience regulation as claimed in claim 6, wherein the top end of the stroke adjusting sleeve is exposed out of the top of the valve body, the regulating mechanism comprises a regulating nut, a threaded through hole is formed in the regulating nut, the top end of the stroke adjusting sleeve is in threaded connection with the threaded through hole, the stroke adjusting sleeve is provided with a top end opening, the top end of the regulating rod is located in the top end opening of the stroke adjusting sleeve and is provided with an inner hexagonal counter bore, the outer side of the stroke adjusting sleeve is provided with a limiting convex rib extending along the axial direction of the stroke adjusting sleeve, and the inner side of the outer sleeve is provided with a sliding groove corresponding to the limiting convex rib.
8. The injection valve with stepless stroke and resilience regulation as claimed in claim 6, wherein the lower end edge of the stroke adjusting sleeve is provided with a flange extending outwards, and the flange is positioned below the lower end of the outer sleeve.
9. The injection valve of claim 6, wherein the outer sleeve has a stroke adjusting dial at its top end.
10. The injection valve with stepless stroke and resilience regulation as claimed in claim 5 or 7, wherein the top opening of the stroke adjusting sleeve is of a hexagon socket structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022037344.3U CN213825618U (en) | 2020-09-16 | 2020-09-16 | Injection valve with stepless regulation of stroke and resilience force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022037344.3U CN213825618U (en) | 2020-09-16 | 2020-09-16 | Injection valve with stepless regulation of stroke and resilience force |
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| Publication Number | Publication Date |
|---|---|
| CN213825618U true CN213825618U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022037344.3U Active CN213825618U (en) | 2020-09-16 | 2020-09-16 | Injection valve with stepless regulation of stroke and resilience force |
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| CN (1) | CN213825618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308536A (en) * | 2021-12-10 | 2022-04-12 | 武汉航空仪表有限责任公司 | Stepless regulation formula point oil device |
-
2020
- 2020-09-16 CN CN202022037344.3U patent/CN213825618U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308536A (en) * | 2021-12-10 | 2022-04-12 | 武汉航空仪表有限责任公司 | Stepless regulation formula point oil device |
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