CN214320745U

CN214320745U - Glue dispensing mechanism with piston pushed by air pressure

Info

Publication number: CN214320745U
Application number: CN202023325949.9U
Authority: CN
Inventors: 朱剑
Original assignee: Nanjing Borui Meishi Photoelectric Technology Co ltd
Current assignee: Nanjing Borui Meishi Photoelectric Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-01
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a glue dispensing mechanism with a piston pushed by air pressure, which comprises a base, a glue dispensing cylinder and an air charging device, the base is provided with a moving mechanism, the dispensing cylinder is provided with a one-way electromagnetic valve, the one-way electromagnetic valve is connected with the inflating device through a conduit, the glue dispensing cylinder is detachably connected with the moving mechanism, the glue dispensing cylinder comprises a rubber tube, a cylinder barrel, a glue outlet needle head, a first air inlet, a push rod, a rubber tube plastic plug and a piston block, one end of the rubber tube is fixedly connected with one end of the rubber outlet needle head, the other end of the rubber tube is connected with one end of the cylinder barrel, the other end of the cylinder barrel is fixedly connected with a first air inlet, one end of the push rod is connected with the piston block, the piston block is in interference fit with the inner wall of the cylinder barrel, and the other end of the push rod penetrates through the cylinder barrel to enter the rubber tube and be fixedly connected with the rubber tube plastic plug. The utility model discloses can stabilize the controllable formula and carry out the point to the PCB board and glue.

Description

Glue dispensing mechanism with piston pushed by air pressure

Technical Field

The utility model relates to a point gum machine technical field, concretely relates to point gum machine by atmospheric pressure promotion piston constructs.

Background

In order to achieve a better projection effect, a current glass display projection display screen needs to be accurately installed on a lamp bead for projection, the mask and a pcb are bonded by glue, the thickness of the glue affects the consistency of the mask after bonding, and the improvement and optimization of a dispensing process are particularly important.

Although the demand of some glue can be satisfied to a certain extent to current point gum machine, nevertheless because current point gum machine is through injecting high-pressure gas into the rubber tube, promote the plastics stopper in the rubber tube through the high atmospheric pressure, thereby extrude glue from some glue syringe needles, can let to have in the rubber tube gaseous inclusion in glue and discharge from the syringe needle in, can cause some glue discontinuity, because atmospheric pressure also can appear unstablely, lead to the syringe needle volume of glue play to be stable, the glue thickness of point play can appear nonconformity, cause some glue quality to be stable inadequately.

SUMMERY OF THE UTILITY MODEL

To the above technical problem, the utility model aims at providing a point gum machine that is formed by numerical control cnc digit control machine tool improvement, for solving above-mentioned technical problem, the utility model discloses a following technical scheme realizes:

a glue dispensing mechanism with a piston pushed by air pressure comprises a base, a glue dispensing cylinder and an inflating device, wherein a moving mechanism is arranged on the base;

the dispensing cylinder is provided with a one-way electromagnetic valve, the one-way electromagnetic valve is connected with the inflating device through a guide pipe, and the dispensing cylinder is detachably connected with the moving mechanism;

the glue dispensing cylinder comprises a rubber tube, a cylinder barrel, a rubber outlet needle head, a first air inlet, a push rod, a rubber tube plastic plug and a piston block, one end of the rubber tube is fixedly connected with one end of the rubber outlet needle head, the other end of the rubber tube is connected with one end of the cylinder barrel, the other end of the cylinder barrel is fixedly connected with the first air inlet, one end of the push rod is connected with the piston block, the piston block is in interference fit with the inner wall of the cylinder barrel, and the other end of the push rod penetrates through the cylinder barrel to enter the inside of the rubber tube and is fixedly connected with the rubber tube plastic plug.

Advantageously, a second air inlet is fixedly connected to one end of the cylinder barrel.

Beneficially, a T-shaped groove is formed in one end of the cylinder barrel, a rubber pipe fixing block is connected to the inner wall of the T-shaped groove, and the other end of the rubber pipe is embedded into the T-shaped groove.

Beneficially, an annular groove is formed in the piston block, an annular sealing strip is fixedly connected in the annular groove, and the piston block is in interference fit with the inner wall of the cylinder barrel through the annular sealing strip.

Advantageously, said base is a cnc machine.

Beneficially, the moving mechanism includes a first moving plate and a second moving plate, the first moving plate is slidably connected to the base, the second moving plate is slidably connected to the first moving plate, the dispensing cylinder is detachably connected to the second moving plate, the second moving plate is fixedly connected to a proximity switch, and the proximity switch is electrically connected to the one-way solenoid valve.

Advantageously, the first moving plate is provided with a notch, and the inner wall of the notch is slidably connected with the side wall of the base.

Advantageously, the second moving plate is fixedly connected with a fixing mechanism, and the dispensing cylinder is detachably connected with the first moving plate through the fixing mechanism.

Beneficially, the fixing mechanism is provided with a fixing part and a limiting seat, the limiting seat is provided with a through hole, the inner wall of the fixing part is abutted to the dispensing air cylinder, two ends of the fixing part are connected with the fixing mechanism, and one end of the dispensing air cylinder penetrates through the through hole.

Beneficially, the base is provided with a dispensing fixing platform.

The utility model discloses it does to have following beneficial effect:

1. because the push rod is used for pushing the rubber tube plastic plug to extrude the glue, the thrust is more stable than the air pressure pushing, and the glue output is more stable and controllable; from the aspect of safety, the glue is pushed by air pressure, so that the rubber tube is broken possibly to cause potential safety hazards, and the pushing is relatively safe by using a push rod; the glue is pushed by the air pressure, so that air is easily mixed into the glue, glue is broken when glue is discharged, air can be effectively prevented from entering the glue by only avoiding air entering during glue filling in the pushing mode of the push rod, and the glue dispensing quality is easy to control;

2. the air tightness is ensured through the interference fit of the annular sealing strip and the cylinder barrel, so that the push rod moves more stably;

3. the rubber can be conveniently replaced through the second air inlet, the piston block returns, the push rod retracts into the cylinder barrel, and the rubber tube is replaced; the time for starting and stopping glue discharging can be intelligently controlled through the proximity switch and the one-way electromagnetic valve.

Drawings

The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.

Fig. 1 is a schematic structural view of a glue dispensing mechanism of the present invention, in which a piston is pushed by air pressure;

fig. 2 is a schematic structural view of the glue dispensing cylinder of fig. 1.

Reference numerals: the glue dispensing device comprises a base 1, a glue dispensing fixing platform 2, a first moving plate 3, a notch 31, a second moving plate 4, a fixing mechanism 5, a fixing piece 51, a limiting seat 52, a through hole 53, a proximity switch 6, a glue dispensing cylinder 7, a rubber tube 71, a cylinder barrel 72, a T-shaped groove 721, a glue dispensing needle 73, a first air inlet 74, a second air inlet 75, a push rod 76, a rubber tube plastic plug 77, a rubber tube fixing block 78, a piston block 79, an annular groove 791, an annular sealing strip 792, a one-way electromagnetic valve 8, a guide pipe 9 and an inflating device 10.

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.

In the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 1-2, a dispensing mechanism using air pressure to push a piston comprises a base 1, a dispensing cylinder 7 and an inflation device 10, wherein the base 1 is provided with a moving mechanism;

the dispensing cylinder 7 is provided with a one-way electromagnetic valve 8, the one-way electromagnetic valve 8 is connected with the inflating device 10 through a guide pipe 9, and the dispensing cylinder 7 is detachably connected with the moving mechanism;

the glue dispensing cylinder 7 comprises a rubber tube 71, a cylinder barrel 72, a rubber outlet needle 73, a first air inlet 74, a push rod 76, a rubber tube plastic plug 77 and a piston block 79, one end of the rubber tube 71 is fixedly connected with one end of the rubber outlet needle 73, the other end of the rubber tube 71 is connected with one end of the cylinder barrel 72, the other end of the cylinder barrel 72 is fixedly connected with the first air inlet 74, one end of the push rod 76 is connected with the piston block 79, the piston block 79 is in interference fit with the inner wall of the cylinder barrel 72, and the other end of the push rod 76 penetrates through the cylinder barrel 72 to enter the rubber tube 71 and is fixedly connected with the rubber tube plastic plug 77.

In an alternative embodiment of the present invention, the cylinder tube 72 has a second air inlet 75 fixed to one end thereof.

According to the utility model discloses an in an optional embodiment, T type groove 721 has been seted up to cylinder section of thick bamboo 72 one end, the wall connection has rubber tube fixed block 78 in T type groove 721, the embedding of the rubber tube 71 other end in T type groove 721.

According to the utility model discloses an in the optional embodiment, ring channel 791 has been seted up on the piston block 79, the rigid coupling has annular sealing strip 792 in the ring channel 791, piston block 79 passes through annular sealing strip 792 with cylinder tube 72 inner wall interference fit.

According to an optional embodiment of the present invention, the base 1 is a cnc machine.

According to the utility model discloses an in the optional embodiment, moving mechanism includes first movable plate 3 and second movable plate 4, first movable plate 3 with 1 sliding connection of base, second movable plate 4 with 3 sliding connection of first movable plate, glue the cylinder 7 with the connection can be dismantled to second movable plate 4, the rigid coupling has proximity switch 6 on the second movable plate 4, proximity switch 6 with 8 electricity connections of one-way solenoid valve.

According to an alternative embodiment of the present invention, the first moving plate 3 is opened with a notch 31, and the inner wall of the notch 31 is slidably connected to the side wall of the base 1.

According to the utility model discloses an in an optional embodiment, the rigid coupling has fixed establishment 5 on second movable plate 4, the cylinder 7 is glued to the point passes through fixed establishment 5 with the connection can be dismantled to first movable plate 3.

According to the utility model discloses an in an optional embodiment, be equipped with mounting 51 and spacing seat 52 on the fixed establishment 5, through-hole 53 has been seted up on the spacing seat 52, the mounting 51 inner wall with it is inconsistent to glue the cylinder 7, the mounting 51 both ends with the fixed establishment 5 is connected, 7 one end of gluing the cylinder is passed through-hole 53.

According to the utility model discloses an in an optional embodiment, be equipped with point on the base 1 and glue fixed platform 2.

In an alternative embodiment of the present invention, the rubber tube fixing block 78 is an oval aluminum block with steps.

In an alternative embodiment of the present invention, the material of the push rod 76 is nylon.

In an alternative embodiment, the inflator 10 is an air motor.

The implementation process comprises the following steps:

place the pcb board on fixed platform 2, start the cnc numerical control machine tool, second movable plate 4 drives a little glue cylinder 7 and proximity switch 6 and moves down, and proximity switch 6 is triggered this moment, and proximity switch 6 control one-way solenoid valve 8 opens, and aerating device 10 fills gas in cylinder section of thick bamboo 72 through pipe 9 and one-way solenoid valve 8.

The cylinder 72 is cylindrical, the first air inlet 74 is filled with air, the compression piston block 79 and the push rod 76 move, so that the rubber hose plastic plug 77 extrudes glue in the rubber hose 71, and the glue flows out of the glue outlet needle 73 onto the PCB.

When the first air inlet 74 stops air inlet, the push rod 76 loses the pushing force, and dispensing is stopped. The second air inlet 75 is used for replacing the rubber, the piston block 79 returns, the push rod 76 retracts into the cylinder tube 72 and the rubber tube 71 is replaced.

The proximity switch 6 and the one-way solenoid valve 8 are all standard or known components to those skilled in the art, and their structure and principle are known to those skilled in the art through technical manuals or through routine experimentation.

The utility model has the advantages that as the push rod 76 is used to push the rubber tube plastic plug 77 to extrude the glue, the thrust ratio is stable to the air pressure push, and the glue output is stable and controllable; from the aspect of safety, the glue is pushed by air pressure, so that the glue tube is broken possibly to cause potential safety hazards, and the push rod 76 is used for pushing the glue tube to be relatively safe; the air pressure pushes the glue to easily mix air into the glue, so that glue is broken when glue is discharged, the air can be effectively prevented from entering the glue by only avoiding air entering during glue filling in the mode of pushing the push rod 76, and the glue dispensing quality is easy to control; the air tightness is ensured by the interference fit of the annular sealing strip 792 and the cylinder barrel 72, so that the push rod 76 moves more stably; the rubber can be conveniently replaced through the second air inlet 75, the piston block 79 returns, the push rod 76 retracts into the cylinder barrel 72, and the rubber tube 71 is replaced; the time for starting and stopping glue discharging can be intelligently controlled through the proximity switch 6 and the one-way electromagnetic valve 8.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A glue dispensing mechanism with a piston pushed by air pressure is characterized by comprising a base (1), a glue dispensing cylinder (7) and an inflating device (10), wherein a moving mechanism is arranged on the base (1);

the dispensing cylinder (7) is provided with a one-way electromagnetic valve (8), the one-way electromagnetic valve (8) is connected with the inflating device (10) through a guide pipe (9), and the dispensing cylinder (7) is detachably connected with the moving mechanism;

the glue dispensing cylinder (7) comprises a rubber tube (71), a cylinder barrel (72), a rubber outlet needle head (73), a first air inlet (74), a push rod (76), a rubber tube plastic plug (77) and a piston block (79), one end of the rubber tube (71) is fixedly connected with one end of the rubber outlet needle head (73), the other end of the rubber tube (71) is connected with one end of the cylinder barrel (72), the other end of the cylinder barrel (72) is fixedly connected with the first air inlet (74), one end of the push rod (76) is connected with the piston block (79), the piston block (79) is in interference fit with the inner wall of the cylinder barrel (72), and the other end of the push rod (76) penetrates through the cylinder barrel (72) to enter the rubber tube (71) and is fixedly connected with the rubber tube plastic plug (77).

2. The dispensing mechanism of claim 1, wherein the cylinder (72) has a second air inlet (75) fixed to one end thereof.

3. The air-pressure piston-pushing glue dispensing mechanism as claimed in claim 2, wherein a T-shaped groove (721) is formed in one end of the cylinder barrel (72), a rubber tube fixing block (78) is connected to the inner wall of the T-shaped groove (721), and the other end of the rubber tube (71) is embedded into the T-shaped groove (721).

4. The glue dispensing mechanism capable of pushing the piston by air pressure according to claim 3, wherein an annular groove (791) is formed in the piston block (79), an annular sealing strip (792) is fixedly connected in the annular groove (791), and the piston block (79) is in interference fit with the inner wall of the cylinder barrel (72) through the annular sealing strip (792).

5. The pneumatic piston-pushing glue dispensing mechanism according to claim 4, wherein the base (1) is a cnc machine.

6. The mechanism of claim 5, wherein the moving mechanism comprises a first moving plate (3) and a second moving plate (4), the first moving plate (3) is slidably connected with the base (1), the second moving plate (4) is slidably connected with the first moving plate (3), the dispensing cylinder (7) is detachably connected with the second moving plate (4), the second moving plate (4) is fixedly connected with a proximity switch (6), and the proximity switch (6) is electrically connected with the one-way solenoid valve (8).

7. The mechanism of claim 6, wherein the first moving plate (3) is provided with a notch (31), and the inner wall of the notch (31) is slidably connected with the side wall of the base (1).

8. The mechanism of claim 7, wherein the second moving plate (4) is fixedly connected with a fixing mechanism (5), and the dispensing cylinder (7) is detachably connected with the first moving plate (3) through the fixing mechanism (5).

9. The mechanism of claim 8, wherein the fixing mechanism (5) is provided with a fixing member (51) and a limiting seat (52), the limiting seat (52) is provided with a through hole (53), the inner wall of the fixing member (51) is in contact with the dispensing cylinder (7), two ends of the fixing member (51) are connected with the fixing mechanism (5), and one end of the dispensing cylinder (7) passes through the through hole (53).

10. The pneumatic piston-pushing dispensing mechanism of any one of claims 1-9, wherein the base (1) is provided with a dispensing fixing platform (2).