CN211715308U

CN211715308U - Micro valve for glue pump

Info

Publication number: CN211715308U
Application number: CN201922052774.XU
Authority: CN
Inventors: 廖爽智; 屈钰钦; 付长生; 胥林波; 王宇豪
Original assignee: Chongqing Hongguang Mechanical & Electrical Engineering Co ltd
Current assignee: Chongqing Hongguang Electromechanical Equipment Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-10-20
Anticipated expiration: 2029-11-25

Abstract

A micro valve for a glue pump comprises a micro valve thimble, a micro valve piston, a return spring and a micro valve shell with a cavity I and a cavity II; the miniature valve shell is provided with an air outlet communicated with the cavity I, and the miniature valve shell is also provided with an air inlet communicated with the cavity II; the cavity I is communicated with the cavity II through a through hole VI; the micro valve piston is movably arranged in the cavity I, and the diameter of the micro valve piston is larger than that of the through hole VI and smaller than that of the cavity I; one end of a micro valve thimble extends into the glue pump, and the other end of the micro valve thimble penetrates through the cavity II and the through hole VI and then is fixed with the micro valve piston; the reset spring is fixed between the top of the cavity I and the micro valve piston. The utility model has the advantages of as follows: the automatic air inlet and outlet adjusting device has the advantages that the structure is compact, the manufacturing cost is low, and meanwhile, the air inlet and outlet of the air inlet hole and the air outlet hole can be automatically adjusted according to the up-and-down movement of the piston of the glue applying pump.

Description

Micro valve for glue pump

Technical Field

The utility model relates to a beat and glue the pump field, concretely relates to a microvalve for beating glue the pump.

Background

In the production process of modern automobiles, the use of various glues, such as structural glues for connection, sealing glues for sealing, vibration isolation glues for vibration isolation, etc., is becoming more and more common. The glue is coated on the automobile, so that the phenomena of noise, water seepage and the like of the automobile can be well reduced, and the quality of the whole automobile is improved.

In the gluing process of the workshop sealant, the outer plate part and the inner plate part are connected by wrapping the inner plate with the outer plate, and the sealant is coated on an outer plate laminating machine between the wrapping edges of the outer plate and the inner plate so as to ensure tight combination of the outer plate and the inner plate. In the gluing process of the automobile production line, the glue stock is guaranteed to be evenly and reasonably coated on the workpiece, and the quality of the finished automobile product can be greatly improved. With the improvement of the future consumption level, the requirement of consumers on the quality of the automobile is higher and higher, and the automobile body gluing process directly influences the quality of the whole automobile, so that the improvement of the gluing quality and efficiency of the automobile is imperative and vital in a certain time in the future.

At present, the manual gluing speed is low, the glue yield is difficult to realize accurate control, the problems of glue overflow, glue falling, glue breaking, uneven glue spreading and the like often occur, and the waste of auxiliary material cost and personnel working hours is caused. When the edge folding glue is coated, if the glue line has the defects of waves, different thicknesses and the like, the phenomena that the edge of the product is badly covered, the quality is affected, even the product is reworked and repaired and the like are easily caused. If glue overflows when welding, before adjusting the line on the car door, the glue needs to be wiped; after the car body is painted, if glue overflows, the glue is required to be shoveled and treated difficultly, which is labor-consuming and time-consuming; the adhesive is not uniform, so that the phenomena of insecure adhesion, adhesive pollution, adhesive leakage and the like occur after adhesion; when the sealant at the windshield is coated with glue, the defects of water leakage and the like of the windshield can be caused by the problems of glue falling, glue breaking, uneven glue coating amount and the like.

Based on the problems, the gluing equipment enters the sight of people, the gluing equipment cannot be separated from the gluing pump, and the purpose of sucking the glue from the glue barrel can be achieved through the up-and-down movement of the piston in the gluing pump. Because the existing micro valve structure is not suitable for the automatic reversing glue pump, a micro valve which can be used in the automatic reversing glue pump is urgently needed in the market at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a compact structure's miniature valve for beating glue pump, it can carry out automatically regulated according to the inlet air and giving vent to anger of beating the up-and-down motion of gluing the pump piston at compact structure, cost of manufacture low simultaneously to inlet port and venthole.

The utility model aims at realizing the micro valve of the glue pump, which comprises a micro valve thimble, a micro valve piston, a reset spring and a micro valve shell with a cavity I and a cavity II; the miniature valve shell is provided with an air outlet communicated with the cavity I, and the miniature valve shell is also provided with an air inlet communicated with the cavity II; the cavity I is communicated with the cavity II through a through hole VI; the micro valve piston is movably arranged in the cavity I, and the diameter of the micro valve piston is larger than that of the through hole VI and smaller than that of the cavity I; one end of a micro valve thimble extends into the glue pump, and the other end of the micro valve thimble penetrates through the cavity II and the through hole VI and then is fixed with the micro valve piston; the reset spring is fixed between the top of the cavity I and the micro valve piston.

The utility model discloses in, the I bottom surface separation of microvalve piston and microvalve's cavity, inlet port and venthole intercommunication, the microvalve piston is hugged closely with I bottom surface of microvalve's cavity, and inlet port and venthole do not communicate. When the pneumatic glue-pumping device is used, the two micro valves used for the glue-pumping pump are respectively arranged at the upper end of the glue-pumping pump and the lower end of the glue-pumping pump, and the piston of the glue-pumping pump is pushed up and down by the gas which is introduced into the reversing valve and then enters the glue-pumping pump. When the piston moves upwards to push the micro valve thimble of the upper micro valve to move upwards, the micro valve piston of the upper micro valve moves upwards to be separated from the bottom surface of the cavity I of the upper micro valve, at the moment, gas enters the cavity II of the upper micro valve from the gas inlet, then enters the cavity I of the upper micro valve through the through hole VI of the upper micro valve, and finally is led to the upper needle cover of the reversing valve through the gas outlet, so that the thimble of the reversing valve is pushed to move downwards, and the reversing valve achieves the reversing purpose; when the piston pushes the micro valve thimble of the lower micro valve to move downwards, the micro valve piston of the lower micro valve moves downwards to be separated from the bottom surface of the cavity I of the lower micro valve, at the moment, gas enters the cavity II of the lower micro valve from the gas inlet, then enters the cavity I of the lower micro valve through the through hole VI of the lower micro valve, and finally is led to the lower needle cover of the reversing valve through the gas outlet to push the reversing valve thimble to move upwards, so that the reversing valve achieves the reversing purpose.

Due to the adoption of the technical scheme, the utility model discloses following advantage has: the automatic air inlet and outlet adjusting device has the advantages that the structure is compact, the manufacturing cost is low, and meanwhile, the air inlet and outlet of the air inlet hole and the air outlet hole can be automatically adjusted according to the up-and-down movement of the piston of the glue applying pump.

Drawings

The drawings of the utility model are as follows:

fig. 1 is a schematic perspective view of an upper end microvalve and a lower end microvalve of a microvalve for a glue dispensing pump according to the present invention;

fig. 2 is a schematic top view of an upper end microvalve of a microvalve for a glue pump according to the present invention;

FIG. 3 is a schematic cross-sectional view taken at C-C in FIG. 2;

fig. 4 is a schematic cross-sectional view of a micro valve needle and a micro valve piston of a micro valve for a glue dispensing pump according to the present invention;

FIG. 5 is a schematic perspective view of the glue dispensing pump of the present invention;

FIG. 6 is a schematic view of an internal structure of the glue dispensing pump of the present invention;

fig. 7 is a schematic bottom view of the glue dispensing pump of the present invention;

FIG. 8 is a schematic cross-sectional view taken at B-B of FIG. 7;

in the figure: 2, a reversing valve, 8, a glue-applying pump piston, 20, a micro valve thimble, 21, a micro valve piston, 22, a return spring, 23, cavities I and 24, cavities II and 25, through holes VI and 32, a ring boss, 33, through holes VII and 34, through holes VIII and 35, a cover plate, 36, a circular table part, 37, a fixing part, 39, an air outlet hole, 40, an air inlet hole, 41, a glue-applying pump, 42, a screw rod, 43, a threaded hole and 44, and a micro valve cover.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1 to 8, a micro valve for a glue pump comprises a micro valve thimble 20, a micro valve piston 21, a return spring 22 and a micro valve housing with a cavity i 23 and a cavity ii 24; an air outlet 39 communicated with the cavity I23 is formed in the miniature valve shell, and an air inlet 40 communicated with the cavity II 24 is also formed in the miniature valve shell; the cavity I23 is communicated with the cavity II 24 through a through hole VI 25; the micro valve piston 21 is movably arranged in the cavity I23, and the diameter of the micro valve piston 21 is larger than that of the through hole VI 25 and smaller than that of the cavity I23; one end of the micro valve thimble 20 extends into the glue pump 41, and the other end of the micro valve thimble 20 passes through the cavity II 24 and the through hole VI 25 and then is fixed with the micro valve piston 21; a return spring 22 is secured between the top of chamber i 23 and the microvalve piston 21.

The utility model discloses in, during the use, with two microvalves that are used for beating the gluey pump arrange respectively in the upper end of beating gluey pump 41 and the lower extreme of beating gluey pump 41, beat gluey pump piston 8 and rely on letting in switching-over valve 2 then get into and beat the gaseous promotion from top to bottom in the gluey pump 41. When the glue-applying pump piston 8 moves upwards to push the micro valve thimble 20 of the upper micro valve to move upwards, the micro valve piston 21 of the upper micro valve moves upwards to be separated from the bottom surface of the cavity I23 of the upper micro valve, at the moment, gas enters the cavity II 24 of the upper micro valve from the gas inlet 40, then enters the cavity I23 of the upper micro valve through the through hole VI 25 of the upper micro valve, and finally is led to the upper needle cover of the reversing valve through the gas outlet 39, so that the thimble of the reversing valve is pushed to move downwards, and the reversing valve 2 achieves the reversing purpose; when the glue-applying pump piston 8 moves downwards to push the micro valve thimble 20 of the lower micro valve to move downwards, the micro valve piston 21 of the lower micro valve moves downwards to be separated from the bottom surface of the cavity I23 of the lower micro valve, at the moment, gas enters the cavity II 24 of the lower micro valve from the gas inlet 40, then enters the cavity I23 of the lower micro valve through the through hole VI 25 of the lower micro valve, and finally is led to the lower needle cover of the reversing valve through the gas outlet 39 to push the reversing valve thimble to move upwards, so that the reversing valve 2 achieves the reversing purpose.

Further, in order to reduce the manufacturing cost of the micro valve mold, a through hole VII 33 with a ring boss 32 is formed in the micro valve shell above the cavity I23, a micro valve cover 44 matched with the through hole VII 33 is arranged on the ring boss 32 in the through hole VII 33, a through hole VIII 34 corresponding to the upper end of the micro valve piston 21 is formed in the micro valve cover 44, the reset spring 22 is arranged in the through hole VIII 34, the diameter of the through hole VIII 34 is larger than or equal to that of the upper end of the micro valve piston 21, and a cover plate 35 is fixed above the through hole VII 33.

Further, in order to further improve the compactness of the microvalve, the microvalve piston 21 includes a circular table portion 36 and a fixing portion 37 fixed to the circular table portion 36, and the diameter of the fixing portion 37 matches the diameter of the through hole viii 34. In this embodiment, the return spring 22 is sleeved on the fixing portion 37.

Further, the cover plate 35 is provided with a hole. The hole functions to communicate the outside air with the through hole viii 34. When the fixing part 37 of the micro valve piston 21 ascends to enter the through hole VIII 34 to compress the spring, gas in the micro valve flows out of the air outlet 39 to push the reversing valve 2 to reverse, the spring is reset after the reversing valve 2 reverses, the fixing part 37 of the micro valve piston 21 descends to enable the cavity I23 to be communicated with the through hole VIII 34, and at the moment, as the cover plate 35 is provided with the hole, external air is communicated with the through hole VIII 34, the gas in the micro valve finally enters the external air from the hole in the cover plate 35, the phenomenon that the pressure in the micro valve is too high due to the fact that the gas in the micro valve is too much is avoided, and danger is reduced. In other embodiments, the dangerous effect can be reduced by opening a hole in the air channel between the micro valve and the reversing valve 2 and then manually or automatically opening or closing the hole at regular time, so that excessive air in the micro valve can be prevented from causing excessive air pressure in the micro valve.

Furthermore, in order to reduce the manufacturing cost of the micro valve thimble 20 and the micro valve piston 21 and improve and reduce the structural strength of the micro valve thimble 20 and the micro valve piston 21, the other end of the micro valve thimble 20 is provided with a screw rod 42, the micro valve piston 21 is provided with a threaded hole 43 matched with the screw rod 42, and the screw rod 42 is fixed in the threaded hole 43.

Further, in order to reduce the processing cost of the micro valve, ensure the structural strength of the micro valve, and better match with each component of the glue pump, the air outlet 39 or/and the air inlet 40 are/is arranged on the side wall of the micro valve housing.

The bottom surface of the cavity I23 in the present embodiment refers to the inner wall of the cavity I23 adjacent to the cavity II 24.

Furthermore, in order to ensure the air tightness of the micro valve, a sealing ring III is fixed between the bottom surface of the cavity I23 and the micro valve piston 21, and the sealing ring III can be fixed on the bottom surface of the cavity I23 and also can be fixed on one side, adjacent to the bottom surface of the cavity I23, of the micro valve piston 21. A groove III is formed in the bottom surface of the cavity I23 or the micro valve piston 21, and a sealing ring III is fixed in the groove III.

Further, in order to further ensure the air tightness of the micro valve, a sealing ring I is fixed between the through hole VIII 34 and the piston. Furthermore, the piston is provided with a groove I, and a sealing ring I is fixed in the groove I.

Further, in order to further ensure the air tightness of the micro valve, a sealing ring II is fixed between the through hole VII 33 and the micro valve cover 44. Furthermore, a groove II is formed in the micro valve cover, and a sealing ring II is fixed in the groove II.

Claims

1. A microvalve for a glue pump, characterized by: comprises a micro valve thimble (20), a micro valve piston (21), a return spring (22) and a micro valve shell with a cavity I (23) and a cavity II (24); an air outlet hole (39) communicated with the cavity I (23) is formed in the micro valve shell, and an air inlet hole (40) communicated with the cavity II (24) is formed in the micro valve shell; the cavity I (23) is communicated with the cavity II (24) through a through hole VI (25); the micro valve piston (21) is movably arranged in the cavity I (23), and the diameter of the micro valve piston (21) is larger than that of the through hole VI (25) and smaller than that of the cavity I (23); one end of the micro valve thimble (20) extends into the glue pump (41), and the other end of the micro valve thimble (20) passes through the cavity II (24) and the through hole VI (25) and then is fixed with the micro valve piston (21); the return spring (22) is fixed between the top of the cavity I (23) and the micro valve piston (21).

2. The micro-valve for a glue pump according to claim 1, wherein: above the cavity I (23), a through hole VII (33) with a ring boss (32) is formed in the micro valve shell, a micro valve cover (44) matched with the through hole VII (33) is arranged on the ring boss (32) in the through hole VII (33), a through hole VIII (34) corresponding to the upper end of the micro valve piston (21) is formed in the micro valve cover (44), a reset spring (22) is arranged in the through hole VIII (34), the diameter of the through hole VIII (34) is larger than or equal to that of the upper end of the micro valve piston (21), and a cover plate (35) is fixed above the through hole VII (33).

3. The micro-valve for a glue pump according to claim 1 or 2, wherein: the micro valve piston (21) comprises a circular table part (36) and a fixing part (37) fixed on the circular table part (36), and the diameter of the fixing part (37) is matched with that of the through hole VIII (34).

4. The micro-valve for a glue pump according to claim 1 or 2, wherein: the other end of the micro valve thimble (20) is provided with a screw rod (42), a threaded hole (43) matched with the screw rod (42) is formed in the micro valve piston (21), and the screw rod (42) is fixed in the threaded hole (43).

5. The micro-valve for a glue pump according to claim 3, wherein: the other end of the micro valve thimble (20) is provided with a screw rod (42), a threaded hole (43) matched with the screw rod (42) is formed in the micro valve piston (21), and the screw rod (42) is fixed in the threaded hole (43).

6. The micro-valve for a glue pump according to claim 1, 2 or 5, wherein: the air outlet hole (39) or/and the air inlet hole (40) are/is arranged on the side wall of the micro valve shell.

7. The micro-valve for a glue pump according to claim 3, wherein: the air outlet hole (39) or/and the air inlet hole (40) are/is arranged on the side wall of the micro valve shell.

8. The micro-valve for a glue pump according to claim 4, wherein: the air outlet hole (39) or/and the air inlet hole (40) are/is arranged on the side wall of the micro valve shell.