CN219150597U - Extrusion type dispensing needle and dispensing machine - Google Patents

Abstract

The application provides an extrusion type dispensing needle and dispensing machine, wherein extrusion type dispensing needle includes that the point is glued head, outer tube and inner tube, and the outer tube cup joints mutually with the inner tube, forms first flow channel between outer tube and the inner tube, forms second flow channel in the inner tube, and the outer tube is made by elastic material with the inner tube, and the rigidity of outer tube is less than the rigidity of inner tube, and the outer tube is kept away from the one side that the point glued head for the extrusion portion. Through setting up first flow channel and second flow and letting in can realize carrying out accurate control to glue extrusion volume when the play glue volume demand is less to make the point gum needle can extrude the glue of different doses according to different work conditions, increased the application scope of point gum needle, can avoid the extravagant saving cost of glue, and then avoid the product surface to cause the washing difficulty because of the glue is remained, the point gum needle goes out gluey quick accuracy in the same time, has improved the job stabilization nature of point gum needle.

Description

Extrusion type dispensing needle and dispensing machine

Technical Field

The application belongs to the technical field of dispensing machines, and particularly relates to an extrusion type dispensing needle and a dispensing machine.

Background

The dispensing needle is also called as a gluing needle, a glue dropping needle, a glue injecting needle, a glue filling needle and the like, and is specially used for controlling fluid. And drop, coat the fluid on the surface of the product or inside the product. The dispensing needle is mainly used for precisely dispensing, injecting, coating and dripping glue, paint and other liquid in the product process to the precise position of each product, and can be used for realizing dotting, line drawing, circular or arc.

The existing dispensing needle is internally provided with a plug, the dispensing mechanism is usually to apply pressure from the rear part of the rubber cylinder through air pressure or mechanical pressure, so that the glue solution in the rubber cylinder is pushed out through the plug, the glue outlet amount is equal to the product of the pushing distance and the sectional area of the plug in the rubber cylinder, and the plug pushing distance is larger than the sectional area of the rubber cylinder, so that even a small error exists in the plug pushing distance, the glue outlet amount of the rubber cylinder is larger. Under the condition that the glue outlet amount is less in requirement, the glue outlet amount of the glue can not be accurately controlled by the glue dispensing needle, and the phenomenon that a large amount of glue is pushed out due to the deviation of the plug pushing-out distance is easy to occur.

Disclosure of Invention

Therefore, the technical problem to be solved in this application is to provide an extrusion type point gum needle and point gum machine, wherein extrusion type point gum needle can be to the play glue volume of gluing the head through setting up first flow channel and second flow channel to make out the glue volume accurate.

In order to solve the above-mentioned problem, this application provides an extrusion formula point gum needle on the one hand, including point gum head, outer tube and inner tube, the outer tube with the inner tube cup joints mutually, the outer tube with form first flow channel between the inner tube, form second flow channel in the inner tube, the outer tube with the inner tube is made by elastic material, the rigidity of outer tube is less than the rigidity of inner tube, the outer tube is kept away from the point gum head one side is extrusion portion.

Optionally, the dispensing head, the first flow channel and the second flow channel are co-linear.

Optionally, the cross-sectional area of the first flow channel is larger than the cross-sectional area of the second flow channel.

Optionally, the first flow channel is in a step shape, the first flow channel comprises a first step and a second step, and one end of the first step, which is far away from the dispensing head, is connected with the second step.

Optionally, the cross section area of the first step is smaller than the cross section area of the second step, and a preset height difference is arranged between the first step and the second step.

Optionally, a side of the outer sleeve, which is close to the dispensing head, is a needle tube body, the length of the needle tube body is the same as that of the first step, and the length of the extrusion part is the same as that of the second step.

Optionally, the dispensing head is in a step shape, and the center position of each step of the dispensing head is on the central axis of the dispensing head.

Optionally, the extrusion type dispensing needle further comprises a connecting portion, the connecting portion is hollow and is in a truncated cone shape with an upper end face and a lower end face being open, one end with a large end face area of the connecting portion is communicated with the needle tube body, and one end with a small end face area of the connecting portion is communicated with the dispensing head.

Optionally, an oleophobic layer is arranged on the inner wall of the connecting part.

In another aspect of the present application, a dispenser is provided, including an extrusion type dispensing needle as described above.

Advantageous effects

According to the extrusion type glue dispensing needle and the glue dispensing machine provided by the embodiment of the utility model, the extrusion type glue dispensing needle can accurately control the glue extrusion amount when the glue extrusion amount requirement is small by arranging the first flow channel and the second flow channel, so that the glue dispensing needle can extrude different doses of glue according to different working conditions, the application range of the glue dispensing needle is enlarged, the waste of the glue can be avoided, the cost is saved, the cleaning difficulty caused by the residual glue on the surface of a product is further avoided, the glue outlet of the glue dispensing needle is rapid and accurate, and the working stability of the glue dispensing needle is improved.

Drawings

Fig. 1 is a schematic structural diagram of an extrusion type dispensing needle according to an embodiment of the present application;

fig. 2 is a side view of an outer sleeve of an embodiment of the present application.

The reference numerals are expressed as:

1. dispensing heads; 2. an outer sleeve; 3. an inner tube; 4. a first flow channel; 41. a first step; 42. a second step; 5. a second flow path; 6. a connection part; 7. and (3) oil-repellent layer.

Detailed Description

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1 to 2, according to an aspect of the embodiments of the present application, an extrusion type dispensing needle is provided, including a dispensing head 1, an outer sleeve 2 and an inner tube 3, the outer sleeve 2 is sleeved with the inner tube 3, a first flow channel 4 is formed between the outer sleeve 2 and the inner tube 3, a second flow channel 5 is formed in the inner tube 3, the outer sleeve 2 and the inner tube 3 are made of elastic materials, the rigidity of the outer sleeve 2 is smaller than that of the inner tube 3, and one side of the outer sleeve 2 away from the dispensing head 1 is an extrusion part.

By arranging the outer sleeve 2 and the inner tube 3, and forming the first flow channel 4 between the outer sleeve 2 and the inner tube 3, forming the second flow channel 5 in the inner tube 3, and simultaneously arranging the outer sleeve 2 with the rigidity smaller than that of the inner tube 3, when a worker presses the extrusion part with smaller force, the inner tube 3 is not changed, the outer sleeve 2 is elastically deformed to be sunken towards the direction of the central axis of the extrusion part, for example, when the worker presses the extrusion part with 2N force, the inner tube 3 is not changed, the outer sleeve 2 is elastically deformed to be sunken towards the direction of the central axis of the extrusion part, the glue in the first flow channel 4 moves towards the dispensing head 1 by the extrusion force of the outer sleeve 2, and a trace of glue is extruded out of the dispensing needle through the dispensing head 1; when the staff presses the extrusion part with the force of 5N, outer tube 2 and inner tube 3 take place elastic deformation simultaneously and are sunken towards the direction of extrusion part axis, and the glue in first flow channel 4 and the second flow channel 5 receives the extrusion force of outer tube 2 and inner tube 3 and removes to the rubber head simultaneously, and a large amount of glue is extruded the point gum needle through point gum head 1. Through setting up first flow channel 4 and second flow and letting through can realize carrying out accurate control to glue extrusion volume when the play glue volume demand is less to make the point gum needle can extrude the glue of different doses according to different work conditions, increased the application scope of point gum needle, can avoid the extravagant saving cost of glue, and then avoid the product surface to cause the washing difficulty because of the glue is remained, and the point gum needle goes out gluey quick accuracy in the time, has improved the job stabilization nature of point gum needle.

The dispensing head 1 may be conical or cylindrical, etc., so as to achieve a dispensing function, which is not further limited in this application.

Specifically, the dispensing head 1 is arranged on the dispensing needle, the dispensing head 1 is connected with the rubber cylinder, the connection mode of the dispensing head 1 can be detachable connection or fixed connection and the like, in the embodiment of the application, the dispensing head 1 and the rubber cylinder are fixedly connected, the dispensing head can be manufactured by integrally forming, the sealing performance of the dispensing head is good, and the leakage of glue can be avoided.

In the embodiment of the application, the rubber cylinder comprises an outer sleeve 2 and an inner tube 3.

Wherein, outer tube 2 cover is established on inner tube 3, and outer tube 2 and the axis coincidence of inner tube 3, and outer tube 2 is kept away from the one side of some first 1 of gluing can be extrusion portion, and extrusion portion can be made by flexible material, and extrusion portion is linked together with some first 1 of gluing, and the staff presses extrusion portion so that the inside glue of some needle is extruded through some first 1 of gluing.

Wherein, a first glue flow channel 4 is formed between the outer sleeve 2 and the inner tube 3, a second glue flow channel 5 is formed between the inner tube 3, the extrusion part includes the first flow channel 4 and the second flow channel 5, as one embodiment, the first flow channel 4 may be circular ring-shaped, the second flow channel 5 may be cylindrical, as another embodiment, the first flow channel 4 may be a rectangular ring, and the second flow channel 5 may be rectangular. In this application, the first flow channel 4 is disposed on the outer peripheral side of the second flow channel 5, that is, the first flow channel 4 is sleeved on the second flow channel 5, and the glue inside the extrusion part can only enter the dispensing head 1 through the first flow channel 4, or the glue inside the extrusion part enters the dispensing head 1 through both the first flow channel 4 and the second flow channel 5.

Specifically, the rigidity of the outer sleeve 2 is smaller than that of the inner tube 3, that is, the outer sleeve 2 is easier to elastically deform relative to the inner tube 3, so that when the extrusion part is pressed by a smaller force, the outer sleeve 2 deforms while the inner tube 3 remains unchanged, for example, when a worker presses the extrusion part with a force of 2N, the inner tube 3 does not change, the outer sleeve 2 elastically deforms to be sunken towards the direction of the central axis of the extrusion part, the glue in the first flow channel 4 moves towards the dispensing head 1 by the extrusion force of the outer sleeve 2, and a small amount of glue is extruded out of the dispensing needle through the dispensing head 1; when the staff presses the extrusion part with the force of 5N, outer tube 2 and inner tube 3 take place elastic deformation simultaneously and are sunken towards the direction of extrusion part axis, and the glue in first flow channel 4 and the second flow channel 5 receives the extrusion force of outer tube 2 and inner tube 3 to move to the point gum head 1, and a large amount of glue is extruded the point gum needle through the point gum head 1.

The central axes of the dispensing head 1, the first flow channel 4 and the second flow channel 5 are collinear.

Through setting up some first 1, first flow channel 4 and second flow channel 5 axis collineation to can even orientation some first 1 direction flows when making glue in the extrusion receive to press, and discharges through some first 1, can realize simultaneously that outer tube 2 and inner tube 3 are the same at the circumference direction interval of extrusion, in order to make second flow channel 5 atress even, improved the stability of some gum needle work.

The cross-sectional area of the first flow channel 4 is larger than the cross-sectional area of the second flow channel 5.

Through setting up the sectional area of first flow channel 4 and being greater than the sectional area of second flow channel 5 to when making the extrusion receive to press, glue in the first flow channel 4 moves towards the first 1 direction of some glue, and glue in the second flow channel 5 is static, can control the extrusion volume of glue, so that the play glue volume of glue is more accurate, and the staff of being convenient for controls the point gum needle simultaneously, has improved the stability of work.

The cross-sectional area of the first flow channel 4 may be a cross-sectional area perpendicular to the central axis direction of the dispensing needle.

The cross-sectional area of the second flow channel 5 may be a cross-sectional area perpendicular to the central axis direction of the dispensing needle.

The first flow channel 4 is in a step shape, the first flow channel 4 comprises a first step 41 and a second step 42, and one end of the first step 41 away from the dispensing head 1 is connected with the second step 42.

In this application, first flow channel 4 includes first ladder 41 and second ladder 42, and second ladder 42 is glue flow channel, through extrusion first ladder 41, and the inside glue of first ladder 41 gets into the first 1 of some glues and discharges through second ladder 42, through setting up first flow channel 4 for the ladder, can make things convenient for the staff to extrude first flow channel 4, has improved work efficiency.

Wherein, first ladder 41 can be the ring shape, and first ladder 41 sets up at the extrusion, and first ladder 41 sets up the periphery side at second flow channel 5, and first ladder 41 is connected with second ladder 42, and its connected mode can be for welding or integrated into one piece make, does not do further limit this application.

Wherein the second step 42 may be annular, and the diameter of the second step 42 is smaller than the diameter of the first step 41, i.e. the gap between the second step 42 and the second flow channel 5 is smaller than the gap between the first step 41 and the second flow channel 5.

Specifically, the length of the second step 42 is greater than that of the first step 41, so that glue can be extruded and then discharged from the elongated second step 42 into the dispensing head 1, and the situation that a worker only needs to apply small force to extrude the glue in the first flow channel 4 can be achieved, and the working efficiency is improved.

The sectional area of the first step 41 is smaller than that of the second step 42, and a preset height difference is arranged between the first step 41 and the second step 42.

By setting the sectional area of the first step 41 smaller than the sectional area of the second step 42, the glue dispensing of the glue dispensing needle at the pressing part is quick and accurate, and the working stability of the glue dispensing needle is improved.

Wherein, the sectional area of the first step 41 may be a sectional area perpendicular to the central axis of the pressing portion.

Wherein, the sectional area of the second step 42 may be a sectional area perpendicular to the central axis of the pressing portion.

Specifically, the cross-sectional area of the first step 41 is smaller than that of the second step 42, so that the glue dispensing of the glue needle at the pressing portion is rapid and accurate.

Wherein, the preset height difference is the difference between the radius of the cross-section ring of the first step 41 and the radius of the cross-section ring of the second step 42.

Specifically, in the embodiment of the present application, the preset height difference is preferably 10mm.

The side of the outer sleeve 2 close to the dispensing head 1 is provided with a needle tube body, the length of the needle tube body is the same as that of the first step 41, and the length of the extrusion part is the same as that of the second step 42.

Through setting up the needle tubing body and providing the passageway that flows for glue, its length is greater than the length of extrusion portion simultaneously, makes things convenient for the staff to observe the flow position of glue, is convenient for judge the extrusion volume of glue, can realize carrying out accurate control to the extrusion volume of glue.

The needle tube body may be cylindrical or rectangular, and in this embodiment of the present application, the needle tube body is a rectangular cavity, and the first flow channel 4 and the second flow channel 5 are disposed inside the needle tube body.

Specifically, the needle tube body is connected with the extrusion part, and as an implementation mode, the needle tube body is made of transparent materials, so that a worker can observe the flow rate and the flow speed of the glue conveniently, the extrusion part is made of elastic materials, and the connection mode is clamping connection and the like, and the application is not limited further; as another implementation mode, the needle tube body and the extrusion part are integrally formed, and the needle tube body and the extrusion part are made of transparent elastic materials. In the embodiment of the application, the needle tube body and the extrusion part are integrally formed.

Wherein, the length of the needle tube body is the same as the length of the first step 41, the length of the extrusion part is the same as the length of the second step 42, the length of the needle tube body is greater than the length of the extrusion part, and the sectional area of the needle tube body is smaller than the sectional area of the extrusion part.

It can be understood that the needle tube body is a slender glue flow channel, the extruding part is in the shape of an air bag with larger sectional area, so that the glue can enter the dispensing head 1 through the slender channel after being pressurized, and the control of the flow rate and the flow velocity of the glue is convenient for staff, so that the glue outlet amount is more accurate.

The dispensing head 1 is in a step shape, and the central position of each step of the dispensing head 1 is on the central axis of the dispensing head 1.

Through setting up the point and gluing first 1 for the ladder to make the central point of each level ladder of point and gluing first 1 put all on the central axis of point and gluing first 1, can cushion glue in the flow direction of glue, improved the flow resistance of glue, reduced the flow rate of glue, avoid the inaccurate and extrusion a large amount of glue of strength, polluted the surface of product when causing extravagant, improved the stability of point gum needle work.

Wherein, the dispensing head 1 is in a step shape, and the cross-sectional area of the dispensing head 1 in the direction away from the extrusion part is gradually reduced.

Specifically, the center position of each step of the dispensing head 1 is on the central axis of the dispensing head 1, so that the glue flowing process is more stable.

The extrusion type dispensing needle further comprises a connecting portion 6, the connecting portion 6 is hollow and is in a truncated cone shape with an upper end face and a lower end face being open, one end of the connecting portion 6 with a large end face area is communicated with the needle tube, and one end of the connecting portion 6 with a small end face area is communicated with the dispensing head 1.

Through setting up connecting portion 6 for cavity and the open round platform shape of up-and-down terminal surface to make the big one end of terminal surface area be linked together with the needle tubing, the little one end of terminal surface area is linked together with the point gum head 1, can realize that glue gathers towards the point gum head 1 behind the connecting portion 6, and play glue volume control is accurate.

Wherein, connecting portion 6 can be round platform shape, and some glued heads 1 are linked together with the needle tubing through connecting portion 6.

Specifically, the big one end of connecting portion 6 terminal surface area is linked together with the needle tubing, and the little one end of connecting portion 6 terminal surface area is linked together with the dispensing head 1, can realize that glue gathers towards the dispensing head 1 behind the connecting portion 6.

An oleophobic layer 7 is arranged on the inner wall of the connecting part 6.

Through setting up and repelling oleophobic layer 7 mutually with glue to make glue can be in the first 1 gathering of some glues, can realize that some gum needle goes out the glue volume unanimity, improved out the gluey accuracy nature.

Wherein, oleophobic layer 7 sets up inside connecting portion 6 to laminate mutually with connecting portion 6's inner wall.

Specifically, the oleophobic layer 7 can be made of silicon dioxide or other materials.

Another aspect of the embodiments of the present application provides a dispenser, including the extrusion type dispensing needle described above.

According to the extrusion type glue dispensing needle and the glue dispensing machine provided by the embodiment of the utility model, the extrusion type glue dispensing needle can accurately control the glue extrusion amount when the glue extrusion amount requirement is small by arranging the first flow channel 4 and the second flow channel, so that the glue dispensing needle can extrude different doses of glue according to different working conditions, the application range of the glue dispensing needle is enlarged, the waste of the glue can be avoided, the cost is saved, the cleaning difficulty caused by the residual glue on the surface of a product is further avoided, the glue outlet of the glue dispensing needle is rapid and accurate, and the working stability of the glue dispensing needle is improved.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiment of the present utility model is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model. The foregoing is merely a preferred embodiment of the present application and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the present application.

Claims (10)

1. The utility model provides an extrusion type dispensing needle, its characterized in that, including point gum head (1), outer tube (2) and inner tube (3), outer tube (2) with inner tube (3) cup joint mutually, outer tube (2) with form first flow channel (4) between inner tube (3), form second flow channel (5) in inner tube (3), outer tube (2) with inner tube (3) are made by elastic material, the rigidity of outer tube (2) is less than the rigidity of inner tube (3), one side that outer tube (2) were kept away from point gum head (1) is extrusion.

2. Extrusion dispensing needle according to claim 1, characterized in that the dispensing head (1), the first flow channel (4) and the second flow channel (5) are co-linear in the central axes.

3. Extrusion dispensing needle according to claim 1, characterized in that the cross-sectional area of the first flow channel (4) is larger than the cross-sectional area of the second flow channel (5).

4. Extrusion dispensing needle according to claim 1, characterized in that the first flow channel (4) is stepped, the first flow channel (4) comprising a first step (41) and a second step (42), the end of the first step (41) remote from the dispensing head (1) being connected to the second step (42).

5. The extrusion dispensing needle according to claim 4, wherein the cross-sectional area of the first step (41) is smaller than the cross-sectional area of the second step (42), a preset height difference being provided between the first step (41) and the second step (42).

6. The extrusion dispensing needle according to claim 5, wherein the side of the outer sleeve (2) close to the dispensing head (1) is a needle tube body, the length of the needle tube body is the same as the length of the first step (41), and the length of the extrusion part is the same as the length of the second step (42).

7. The extrusion type dispensing needle according to claim 1, wherein the dispensing head (1) is stepped, and the central position of each step of the dispensing head (1) is on the central axis of the dispensing head (1).

8. The extrusion type dispensing needle according to claim 6, further comprising a connecting portion (6), wherein the connecting portion (6) is hollow and has a truncated cone shape with an upper end face and a lower end face open, one end of the connecting portion (6) with a large end face area is communicated with the needle tube, and one end of the connecting portion (6) with a small end face area is communicated with the dispensing head (1).

9. Extrusion dispensing needle according to claim 8, characterized in that the connecting part (6) is provided with an oleophobic layer (7) on its inner wall.

10. A dispenser comprising an extrusion dispensing needle according to any one of claims 1 to 9.

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