CN216261691U

CN216261691U - Self-closing goes out to glue head and point gum machine

Info

Publication number: CN216261691U
Application number: CN202122649100.5U
Authority: CN
Inventors: 吴仕明; 王智
Original assignee: Shanghai Lansheng New Material Technology Co ltd
Current assignee: Shanghai Lansheng New Material Technology Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-04-12
Anticipated expiration: 2031-11-01

Abstract

The utility model provides a self-closing glue outlet head, which comprises a glue outlet head body, a check screw and a ball body, wherein the check screw is arranged on the glue outlet head body; the glue outlet head body is provided with a first glue inlet, a first channel, a second channel and a sphere containing cavity, a third channel is arranged in the check screw, and the bottom end of the sphere containing cavity is provided with a first blocking structure; the ball body can move in the ball body accommodating cavity along the vertical direction, when the ball body moves to the highest point, the top end of the ball body shields the outlet end of the third channel, and the third channel is isolated from the ball body accommodating cavity; when the sphere moves to the lowest point, the sphere is in contact with the first blocking structure, and the second channel is communicated with the third channel through the sphere containing cavity. The glue backflow prevention device has the advantages that the backflow prevention effect of glue is realized by adopting the structure of the check screw and the ball body, the glue is prevented from being mixed and solidified in the glue outlet head, and the service life of the glue outlet head is prolonged.

Description

Self-closing goes out to glue head and point gum machine

Technical Field

The utility model relates to the field of glue coating equipment, in particular to a self-closing glue outlet head and a glue dispenser.

Background

The mixing and curing of glue inside the glue outlet head caused by the backflow of the glue is one of the biggest problems of the existing gun valve, no good solution exists in the market, the problem that the glue outlet head is blocked is solved by replacing the glue outlet head, and the resource waste is caused invisibly.

Patent document CN204247472U discloses a glue outlet structure of a dispenser, which comprises a dispensing head sleeve and a dispensing needle head, wherein the dispensing head sleeve comprises a hollow cylindrical base, a conical tapered portion and a hollow cylindrical neck, the tapered portion is connected with the lower end of the base, the middle of the tapered portion is hollow, the wall thickness between the inner wall and the outer wall of the tapered portion is gradually reduced from top to bottom, the bottom end of the tapered portion is provided with an opening, the neck is connected with the opening at the bottom end of the tapered portion, and the central lines of the base, the tapered portion and the neck are on the same axis; the glue dispensing needle head is in a hollow thin cylinder shape, the length of the glue dispensing needle head is slightly larger than the depth of the neck, the diameter of the glue dispensing needle head is equal to the inner diameter of the neck, the glue dispensing needle head is adhered to the inner wall of the neck through glue, and the tail end of the glue dispensing needle head extends out of the bottom end of the neck; the tail end of the outer wall of the dispensing needle head is provided with a U-shaped notch, and the U-shaped notch and the plane of the tail end of the dispensing needle head are in smooth transition. However, the proposal does not avoid the phenomenon of glue mixing and curing inside the glue outlet head caused by glue backflow.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a self-closing glue outlet head and a glue dispenser.

The self-closing glue outlet head comprises a glue outlet head body, a check screw and a ball body;

the glue outlet head body is provided with a first glue inlet, a first channel, a second channel and a ball containing cavity; the glue inlet is communicated with the first channel;

the check screw is arranged on the glue outlet head body, a second glue inlet is formed in one end of the check screw, a third channel is formed in the check screw, and the inlet end of the third channel is communicated with the first channel through the second glue inlet;

the sphere containing cavity is arranged between the third channel and the second channel, the sphere is installed in the sphere containing cavity, and the diameter of the sphere is larger than that of the third channel and that of the second channel; the bottom end of the ball containing cavity is provided with a first blocking structure;

the ball can move in the vertical direction in the ball containing cavity,

when the sphere moves to the highest point, the top end of the sphere shields the outlet end of the third channel, and the third channel is isolated from the sphere containing cavity; when the sphere moves to the lowest point, the sphere is in contact with the first blocking structure, and the second channel is communicated with the third channel through the sphere containing cavity.

Preferably, the first blocking structure is a boss structure, the boss structure is composed of a plurality of bosses, the plurality of bosses are arranged along the circumferential direction of the ball containing cavity, and gaps between the bosses ensure that the ball containing cavity is communicated with the second channel.

Preferably, the number of bosses is 6.

Preferably, the first blocking structure is integrally connected with the bottom end of the ball containing cavity.

Preferably, the number of the first glue inlets is one or more, and the number of the first channels, the check screws, the ball body accommodating cavity, the first blocking structures and the second channels corresponds to the number of the first glue inlets one to one.

Preferably, the number of the first glue inlets is two, and the first glue inlets are symmetrically arranged along the central axis of the self-closing glue outlet head.

Preferably, the glue injection device further comprises a non-return structure, wherein the non-return structure is arranged at the top end of the first glue inlet; the check structure comprises a ball body, a ball body accommodating cavity and a first blocking structure;

the sphere is arranged in the sphere containing cavity, the first blocking structure is arranged at the bottom of the sphere containing cavity, and the diameter of the sphere is larger than that of the first glue inlet.

Preferably, the number of the check structures is two.

Preferably, the first glue inlet is arranged perpendicular to the first channel, the first channel is arranged perpendicular to the third channel, and the third channel, the sphere containing cavity and the second channel are coaxially arranged.

According to the glue dispenser provided by the utility model, the self-closing glue outlet head is adopted.

Compared with the prior art, the utility model has the following beneficial effects:

1. the glue backflow prevention device has the advantages that the backflow prevention effect of glue is realized by adopting the structure of the check screw and the ball body, the glue is prevented from being mixed and solidified in the glue outlet head, and the service life of the glue outlet head is prolonged.

2. The structure of the check screw and the ball body is simple in structure, low in cost and high in reliability.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the internal structure of the self-closing glue dispensing head according to the present invention;

FIG. 2 is a schematic three-dimensional structure of the self-closing glue dispensing head according to the present invention;

FIG. 3 is a schematic front view of the self-closing glue dispensing head of the present invention;

FIG. 4 is a schematic rear view of the self-closing dispensing head according to the present invention;

FIG. 5 is a schematic side view of the self-closing dispensing head of the present invention;

FIG. 6 is a schematic cross-sectional view of a three-dimensional structure of the self-closing glue dispensing head according to the present invention;

FIG. 7 is a schematic structural view of a ball and a boss of the self-closing glue dispensing head of the present invention;

fig. 8 is a schematic structural view of the self-closing glue outlet head boss of the present invention.

The figures show that:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

The utility model provides a self-closing glue outlet head, which comprises a glue outlet head body 10, a check screw 13 and a ball 14; as shown in fig. 1 to 5, the glue outlet head body 10 is provided with a first glue inlet 12, a first passage 15, a second passage 16 and a ball accommodating cavity 17; the glue inlet 12 is communicated with the first channel 15; in a preferred embodiment, the ball 14 is a steel ball.

The check screw 13 is mounted on the glue outlet head body 10, a second glue inlet 11 is formed in one end of the check screw 13, a third channel 18 is formed in the check screw 13, and the inlet end of the third channel 18 is communicated with the first channel 15 through the second glue inlet 11;

the ball containing cavity 17 is arranged between the third channel 18 and the second channel 16, the ball 14 is installed in the ball containing cavity 17, and the diameter of the ball 14 is larger than that of the third channel 18 and the second channel 16; the bottom end of the sphere containing cavity 17 is provided with a first blocking structure; preferably, the first blocking structure is integrally connected with the bottom end of the ball receiving cavity 17.

As shown in fig. 1 and 6, the first glue inlet 12 is arranged perpendicular to the first channel 15, the first channel 15 is arranged perpendicular to the third channel 18, and the third channel 18, the ball receiving cavity 17 and the second channel 16 are coaxially arranged.

The sphere 14 can move in the sphere containing cavity 17 in the vertical direction, when the sphere 14 moves to the highest point, the top end of the sphere 14 shields the outlet end of the third channel 18, and the third channel 18 is isolated from the sphere containing cavity 17; when the ball 14 moves to the lowest point, the ball 14 contacts the first blocking structure, and the second channel 16 and the third channel 18 are communicated through the ball containing cavity 17.

As shown in fig. 6-8, the first blocking structure is a boss structure, the boss structure is composed of a plurality of bosses 19, the plurality of bosses 19 are arranged along the circumferential direction of the ball accommodating cavity 17, and the gap between the bosses 19 ensures that the ball accommodating cavity 17 is communicated with the second channel 16. In a preferred embodiment, the number of the bosses 19 is 6.

The number of the first glue inlets 12 is one or more, and the number of the first channels 15, the check screws 13, the spheres 14, the sphere accommodating cavities 17, the first blocking structures and the second channels 16 corresponds to the number of the first glue inlets 12 one to one. In a preferred embodiment, as shown in fig. 1 and 6, there are two first glue inlets 12, and the two first glue inlets are symmetrically arranged along the central axis of the self-closing glue outlet head.

As shown in fig. 1, the self-closing glue outlet head further comprises a non-return structure 20, and the non-return structure 20 is arranged at the top end of the first glue inlet 12; the check structure 20 includes a ball 14, a ball receiving cavity 17, and a first blocking structure; the sphere 14 is arranged in the sphere containing cavity 17, the first blocking structure is arranged at the bottom of the sphere containing cavity 17, and the diameter of the sphere 14 is larger than that of the first glue inlet 12. Preferably, the number of the check structures 20 is two. The non-return structure 20 and the non-return principle are the same as the non-return screw 13 and the ball 14. The check structure 20 can be matched with the check screws 13 on other parts to prevent the backflow of the glue of the self-closing glue outlet head, so that a double-safety effect is achieved.

The utility model provides a glue dispenser, which adopts the self-closing glue outlet head.

The working principle of the utility model is as follows:

the glue outlet head body 10 is a glue channel and is used for connecting a glue mixing pipe. In the normal gluing process, the ball 14 is pressed at the lowest point of the movement track of the ball 14 by glue, the ball 14 is in contact with the first blocking structure, and the second channel 16 is communicated with the third channel 18 through the ball accommodating cavity 17. In the process, the glue reaches the ball containing cavity 17 through the non-return structure 20, the first glue inlet 12, the first channel 15, the second glue inlet 11 and the third channel 18 in sequence, then flows into the second channel 16 from the gap between the bosses 19, and finally flows out of the glue outlet head body 10 to enter the glue mixing tube.

When the glue outlet pressure of the two second channels 16 is different, the glue with smaller pressure can be compressed and reflows, the ball body 14 can be driven by the glue to reflow together in the process of the backflow of the glue, in the process, the ball body 14 is pressed to the highest point of the motion track of the ball body 14 by the glue, at the moment, the top end of the ball body 14 shields the outlet end of the third channel 18, the third channel 18 is isolated from the ball body accommodating cavity 17, and the backflow of the glue is blocked.

According to the utility model, the phenomenon of backflow of glue can be well prevented, and by designing the check screw 13 and the ball body 14, when glue stringing occurs in the glue outlet, and the glue at the glue outlet with lower pressure flows back, the ball body 14 shields and seals the outlet end of the third channel 18, so that the purpose of stopping backflow of the glue is achieved. Therefore, the two kinds of glue can not be mixed and solidified in the glue outlet of the glue outlet head, and the service life of the glue outlet head is prolonged.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The self-closing glue outlet head is characterized by comprising a glue outlet head body (10), a check screw (13) and a ball body (14);

the glue outlet head body (10) is provided with a first glue inlet (12), a first channel (15), a second channel (16) and a sphere containing cavity (17); the glue inlet (12) is communicated with the first channel (15);

the check screw (13) is mounted on the glue outlet head body (10), a second glue inlet (11) is formed in one end of the check screw (13), a third channel (18) is formed in the check screw (13), and the inlet end of the third channel (18) is communicated with the first channel (15) through the second glue inlet (11);

the ball containing cavity (17) is arranged between the third channel (18) and the second channel (16), the ball (14) is installed in the ball containing cavity (17), and the diameter of the ball (14) is larger than that of the third channel (18) and the second channel (16); the bottom end of the ball containing cavity (17) is provided with a first blocking structure;

the ball (14) can move in the vertical direction in the ball containing cavity (17);

when the ball body (14) moves to the highest point, the top end of the ball body (14) shields the outlet end of the third channel (18), and the third channel (18) is isolated from the ball body accommodating cavity (17); when the ball (14) moves to the lowest point, the ball (14) is in contact with the first blocking structure, and the second channel (16) is communicated with the third channel (18) through the ball containing cavity (17).

2. The self-closing glue dispensing head according to claim 1, characterized in that the first blocking structure is a boss structure, the boss structure is composed of a plurality of bosses (19), the plurality of bosses (19) are arranged along the circumference of the ball accommodating cavity (17), and the gap between the bosses ensures that the ball accommodating cavity (17) is communicated with the second channel (16).

3. The self-closing dispensing head according to claim 2, characterized in that the number of the bosses (19) is 6.

4. The self-closing dispensing head according to claim 2, characterized in that said first blocking structure is integrally connected to the bottom end of said ball housing chamber (17).

5. The self-closing glue dispensing head according to claim 1, characterized in that the number of the first glue inlets (12) is one or more, and the number of the first channels (15), the check screws (13), the ball body (14), the ball body accommodating cavity (17), the first blocking structure and the second channels (16) corresponds to the number of the first glue inlets (12).

6. The self-closing head according to claim 5, wherein there are two first glue inlets (12) and the two first glue inlets are symmetrically arranged along a central axis of the self-closing head.

7. The self-closing glue dispensing head according to claim 6, further comprising a non-return structure (20), wherein the non-return structure (20) is arranged at the top end of the first glue inlet (12); the check structure (20) comprises a ball (14), a ball containing cavity (17) and a first blocking structure;

the sphere (14) is arranged in the sphere containing cavity (17), the first blocking structure is arranged at the bottom of the sphere containing cavity (17), and the diameter of the sphere (14) is larger than that of the first glue inlet (12).

8. Self-closing tapping head according to claim 7, wherein the number of non-return structures (20) is two.

9. The self-closing dispensing head according to claim 1, characterized in that the first glue inlet (12) is arranged perpendicular to the first channel (15), the first channel (15) is arranged perpendicular to the third channel (18), and the third channel (18), the ball receiving cavity (17) and the second channel (16) are arranged coaxially.

10. A dispenser, characterized in that the self-closing dispensing head of any one of claims 1 to 9 is adopted.