CN111036494A - Dispensing needle head and dispensing machine - Google Patents
Dispensing needle head and dispensing machine Download PDFInfo
- Publication number
- CN111036494A CN111036494A CN201911343382.7A CN201911343382A CN111036494A CN 111036494 A CN111036494 A CN 111036494A CN 201911343382 A CN201911343382 A CN 201911343382A CN 111036494 A CN111036494 A CN 111036494A
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- Prior art keywords
- needle
- dispensing
- baffle
- pressure maintaining
- dispensing needle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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Abstract
The invention discloses a dispensing needle head and a dispensing machine, wherein the dispensing needle head comprises: a needle seat; the needle tube is vertically connected with the needle seat and is provided with a needle tube opening far away from the needle seat, and the needle tube opening is provided with a first lateral margin and a second lateral margin which are opposite; and one end of the pressure maintaining baffle is connected with the first lateral edge, the other end of the pressure maintaining baffle extends transversely, and a glue outlet is formed between the other end of the pressure maintaining baffle and the second lateral edge. The technical scheme of the invention can improve the glue discharging uniformity and stability of the glue dispensing needle head.
Description
Technical Field
The invention relates to the technical field of dispensing equipment, in particular to a dispensing needle head and a dispensing machine.
Background
At present, a dispensing needle is often used in production to perform dispensing operation. In the process of dispensing the soft material by using the dispensing needle, the glue outlet of the dispensing needle is usually adjacent to the surface of the soft material, so that the glue can flow out of the soft material. However, the soft material is easy to deform and slightly concaved and convexed, under such a circumstance, the gap between the glue outlet and the surface of the soft material changes when the dispensing needle head is used for horizontally moving and dispensing, so that the contact area between the glue outlet and the surface of the soft material changes, the uniformity of the glue outlet is difficult to ensure, the soft material is scratched by the glue outlet and the glue outlet is blocked, the glue outlet is unstable, and the production efficiency and the product quality are affected.
Disclosure of Invention
The invention mainly aims to provide a dispensing needle head and aims to improve the dispensing uniformity and stability of the dispensing needle head.
In order to achieve the above object, the dispensing needle of the present invention comprises:
a needle seat;
the needle tube is vertically connected with the needle seat and is provided with a needle tube opening far away from the needle seat, and the needle tube opening is provided with a first lateral margin and a second lateral margin which are opposite; and
and one end of the pressure maintaining baffle is connected with the first lateral edge, the other end of the pressure maintaining baffle extends transversely, and a glue outlet is formed between the other end of the pressure maintaining baffle and the second lateral edge.
Optionally, the width of the pressure maintaining baffle is L, the diameter of the needle tube opening is D, and the relationship between L and D is satisfied: 1/4 is less than or equal to L/D is less than or equal to 3/4.
Optionally, there is a gap between the pressure retaining baffle and the second side edge in the vertical direction.
Optionally, the interval between the pressure maintaining baffle and the second side edge is not less than 0.2mm and not more than 0.5mm in the vertical direction.
Optionally, the surface of the pressure-maintaining baffle facing away from the needle tube lumen is provided as a cambered surface.
Optionally, the pressure maintaining baffle is connected with the first side edge through a chamfer.
Optionally, the dispensing needle further comprises a guide plate, one end of the guide plate is connected with the second lateral edge, and the other end of the guide plate extends outwards and transversely.
Optionally, the needle tube includes a first tube section connected to the needle holder and a second tube section detachably connected to the first tube section, and the pressure maintaining baffle is disposed in the second tube section.
Optionally, the second pipe section is threadedly connected with the first pipe section.
The invention also provides a dispensing machine, which comprises the dispensing needle head.
According to the technical scheme, the pressure maintaining baffle is additionally arranged on the needle tube opening, so that the dispensing machine can press the dispensing needle head downwards until the pressure maintaining baffle is completely contacted with the soft material of a product during dispensing operation, and due to the pressure maintaining effect of the pressure maintaining baffle, the interval between the glue outlet and the surface of the soft material cannot be changed, so that the glue outlet uniformity of the glue outlet can be ensured; in addition, the arrangement of the pressure maintaining baffle plate can ensure that the dispensing needle head is not easy to scratch products, so that the probability that the glue outlet is blocked can be reduced, the glue outlet amount is more stable, and the production efficiency and the product quality are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of a dispensing needle according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the needle cannula of the needle tip of FIG. 1;
FIG. 3 is an enlarged view of a portion of another embodiment of a needle cannula of the dispensing needle of the present invention;
FIG. 4 is an enlarged view of a portion of a needle cannula of a dispensing needle in accordance with yet another embodiment of the present invention;
fig. 5 is a schematic structural view of a dispensing needle according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Needle stand | 11 | |
| 20 | |
201 | |
| 202 | |
21 | |
| 22 | |
23 | |
| 30 | Pressure maintaining baffle | 31 | Cambered |
| 32 | Chamfering | 40 | Guide plate |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a dispensing needle head.
Referring to fig. 1 and 2, in an embodiment of the present invention, the dispensing needle includes:
a needle stand 10;
a needle tube 20, the needle tube 20 being vertically connected to the needle holder 10 and having a needle tube opening remote from the needle holder 10, the needle tube opening having a first side edge 201 and a second side edge 202 opposite to each other; and
and a pressure maintaining baffle 30, one end of the pressure maintaining baffle 30 is connected with the first side edge 201, the other end extends along the transverse direction, and a glue outlet 21 is formed between the other end of the pressure maintaining baffle 30 and the second side edge 202.
In this embodiment, generally, a funnel-shaped guiding cavity 11 is formed inside the needle base 10, and the needle tube 20 is communicated with the guiding cavity 11, so that the glue in the needle base 10 can flow into the needle tube 20, thereby improving the glue discharging smoothness of the dispensing needle.
In this embodiment, the cross-section of the needle cannula 20 may be circular, oval, square, or other shape suitable for preparation. It should be noted that when the cross section of the needle tube 20 is circular, the first side edge 201 and the second side edge 202 refer to two positions far away from each other on the needle tube mouth, and of course, these two positions should include two opposite ends of the same diameter on the needle tube mouth.
According to the technical scheme, the pressure maintaining baffle 30 is additionally arranged on the needle pipe opening, so that the dispensing machine can press the dispensing needle head downwards until the pressure maintaining baffle 30 is completely contacted with the soft material of a product during dispensing operation, and due to the pressure maintaining effect of the pressure maintaining baffle 30, the interval between the glue outlet 21 and the surface of the soft material cannot be changed, so that the glue outlet uniformity of the glue outlet 21 can be ensured; in addition, the arrangement of the pressure maintaining baffle 30 can also ensure that the dispensing needle head is not easy to scratch products, thereby reducing the probability that the glue outlet 21 is blocked, ensuring that the glue outlet amount is more stable, and improving the production efficiency and the product quality.
In this embodiment, when the dispensing needle is applied to the dispenser, the dispenser controls the moving direction of the dispensing needle to be a direction from the second side edge 202 to the first side edge 201; that is, in the dispensing operation process, the dispensing outlet 21 of the dispensing needle is located at the rear side of the pressure maintaining baffle 30 in the translation direction of the dispensing needle.
It can be understood that if the pressure maintaining baffle 30 is too narrow, the pressure maintaining effect of the pressure maintaining baffle 30 will be very limited; however, if the pressure maintaining baffle 30 is too wide, the existence of the pressure maintaining baffle 30 will reduce the glue outlet 21 to a greater extent, and thus the glue outlet speed is greatly affected. In this embodiment, further, the width L of the pressure maintaining baffle 30 and the diameter D of the needle nozzle satisfy the relationship: 1/4 is less than or equal to L/D is less than or equal to 3/4; therefore, the width of the pressure maintaining baffle 30 is moderate, so that the pressure maintaining baffle 30 can have a sufficient pressure maintaining effect, and the glue outlet speed of the glue outlet 21 cannot be excessively influenced.
Further, in the vertical direction, a gap H is formed between the pressure maintaining baffle 30 and the second side edge 202; so, pressurize baffle 30 with not only have between second lateral margin 202 at horizontal ascending interval, still have at vertical ascending interval H, be favorable to increasing out jiao kou 21 to improve some glue syringe needle and go out gluey smoothness nature.
It can be understood that if the distance H between the pressure-maintaining baffle 30 and the second side edge 202 is too small, the glue outlet 21 of the dispensing needle is too small, which affects the glue outlet speed, and particularly, when the pressure-maintaining baffle 30 is completely contacted with the soft material of the product, it is difficult to discharge glue; however, if the distance H between the pressure maintaining baffle 30 and the second side edge 202 is too large, the glue outlet 21 of the dispensing needle is too large, and the glue outlet 21 is prone to have unstable glue outlet, thereby affecting the uniformity of glue outlet. In this embodiment, further, in the vertical direction, the interval H between the pressure maintaining baffle 30 and the second side edge 202 is not less than 0.2mm and not more than 0.5 mm; therefore, the glue outlet 21 of the dispensing needle head is moderate in size, so that the glue outlet 21 can have enough glue outlet speed, and the phenomenon of unstable glue outlet can not occur.
Referring to fig. 3, further, the surface of the pressure maintaining baffle 30 facing away from the lumen of the needle tube 20 is provided with a cambered surface 31; therefore, on one hand, the probability that the pressure maintaining baffle 30 scratches the soft material of the product can be reduced; on the other hand, the translation smoothness of the dispensing needle head is improved. However, the design is not limited thereto, in other embodiments, referring to fig. 4, the surface of the pressure maintaining baffle 30 facing away from the lumen of the needle tube 20 may also be a plane, but the pressure maintaining baffle 30 is connected to the first side edge 201 through a chamfer 32; it can be understood that the chamfer 32 can reduce the sharpness of the connection between the pressure maintaining baffle 30 and the first side edge 201, so as to reduce the probability that the connection between the pressure maintaining baffle 30 and the first side edge 201 scratches the soft material of the product, and improve the translation smoothness of the dispensing needle; without loss of generality, the chamfer 32 between the pressure-retaining baffle 30 and said first lateral edge 201 can be machined by a polishing process.
Referring to fig. 3, further, the dispensing needle further includes a guide plate 40, one end of the guide plate 40 is connected to the second side edge 202, and the other end extends outward and transversely; so, can avoid glue to roll up second lateral margin 202 upside to reduce the appearance of some glue wire drawing phenomenon, in addition, deflector 40 has the guide effect to glue out, can improve out and glue the degree of consistency and stability.
Referring to fig. 5, further, the needle cannula 20 includes a first tube segment 22 connected to the needle hub 10 and a second tube segment 23 detachably connected to the first tube segment 22, and the pressure maintaining barrier 30 is provided on the second tube segment 23. It can be understood that the end of the dispensing needle provided with the glue outlet 21 is easily blocked by non-easy-to-open property, and even collided and bent. According to the technical scheme, the needle tube 20 is arranged in a sectional mode, and the second tube section 23 provided with the pressure maintaining baffle 30 and the glue outlet 21 is detachably connected with the first tube section 22, so that when the needle tube 20 is bent or the glue outlet 21 is blocked, only the second tube section 23 needs to be detached and replaced, the whole needle head is not required to be replaced, and the replacement cost can be reduced. Optionally, the second pipe section 23 is threaded with the first pipe section 22; the threaded connection can be detached, and on the one hand, the connection stability between the second pipe section 23 and the first pipe section 22 can be ensured, and on the other hand, the tightness of the connection between the second pipe section 23 and the first pipe section 22 can be ensured.
The invention further provides a dispenser, which comprises a dispensing needle head, the specific structure of the dispensing needle head refers to the above embodiments, and the dispenser adopts all the technical schemes of all the embodiments, so that the dispenser at least has all the beneficial effects brought by the technical schemes of the embodiments, and further description is omitted.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A dispensing needle, comprising:
a needle seat;
the needle tube is vertically connected with the needle seat and is provided with a needle tube opening far away from the needle seat, and the needle tube opening is provided with a first lateral margin and a second lateral margin which are opposite; and
and one end of the pressure maintaining baffle is connected with the first lateral edge, the other end of the pressure maintaining baffle extends transversely, and a glue outlet is formed between the other end of the pressure maintaining baffle and the second lateral edge.
2. The dispensing needle head of claim 1, wherein the pressure maintaining baffle has a width L, the needle orifice has a diameter D, and the relationship between L and D is satisfied: 1/4 is less than or equal to L/D is less than or equal to 3/4.
3. The dispensing needle of claim 1, wherein the pressure retaining baffle is vertically spaced from the second skirt.
4. The dispensing needle of claim 3, wherein the gap between the pressure retaining baffle and the second skirt is not less than 0.2mm and not more than 0.5mm in the vertical direction.
5. The dispensing needle of claim 1, wherein a surface of the pressure retaining baffle facing away from the lumen of the needle cannula is configured as a curved surface.
6. The dispensing needle of claim 1, wherein the pressure retaining baffle is connected to the first side edge by a chamfer.
7. The dispensing needle of claim 1, further comprising a guide plate, wherein one end of the guide plate is connected to the second side edge and the other end extends laterally outward.
8. The dispensing needle of any of claims 1 to 7, wherein the needle tube comprises a first tube segment connected to the needle hub and a second tube segment detachably connected to the first tube segment, and the pressure maintaining baffle is disposed in the second tube segment.
9. The dispensing needle of claim 8, wherein the second tube segment is threadably connected to the first tube segment.
10. A dispenser comprising a dispensing needle according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343382.7A CN111036494B (en) | 2019-12-20 | 2019-12-20 | Dispensing needle head and dispensing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343382.7A CN111036494B (en) | 2019-12-20 | 2019-12-20 | Dispensing needle head and dispensing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111036494A true CN111036494A (en) | 2020-04-21 |
| CN111036494B CN111036494B (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911343382.7A Active CN111036494B (en) | 2019-12-20 | 2019-12-20 | Dispensing needle head and dispensing machine |
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| Country | Link |
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| CN (1) | CN111036494B (en) |
Citations (7)
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|---|---|---|---|---|
| JP2010000442A (en) * | 2008-06-20 | 2010-01-07 | Panasonic Corp | Liquid discharge device |
| CN201676804U (en) * | 2010-03-04 | 2010-12-22 | 池州市旭豪机械有限公司 | Gum outlet head structure |
| CN103433177A (en) * | 2013-07-19 | 2013-12-11 | 常州快克锡焊股份有限公司 | Split material counting apparatus |
| CN205436198U (en) * | 2015-12-18 | 2016-08-10 | 奇瑞汽车股份有限公司 | Be used for gummed instrument of vehicle door sealing |
| CN105903640A (en) * | 2016-05-26 | 2016-08-31 | 努比亚技术有限公司 | Dispensing needle head and dispensing machine |
| CN206153069U (en) * | 2016-11-07 | 2017-05-10 | 广东显诺科技有限公司 | Rotatable heterotypic dispensing valve |
| CN206535705U (en) * | 2017-02-27 | 2017-10-03 | 浙江英特来光电科技有限公司 | A kind of dispensing needle head of horseshoe clamp bottom opening |
-
2019
- 2019-12-20 CN CN201911343382.7A patent/CN111036494B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010000442A (en) * | 2008-06-20 | 2010-01-07 | Panasonic Corp | Liquid discharge device |
| CN201676804U (en) * | 2010-03-04 | 2010-12-22 | 池州市旭豪机械有限公司 | Gum outlet head structure |
| CN103433177A (en) * | 2013-07-19 | 2013-12-11 | 常州快克锡焊股份有限公司 | Split material counting apparatus |
| CN205436198U (en) * | 2015-12-18 | 2016-08-10 | 奇瑞汽车股份有限公司 | Be used for gummed instrument of vehicle door sealing |
| CN105903640A (en) * | 2016-05-26 | 2016-08-31 | 努比亚技术有限公司 | Dispensing needle head and dispensing machine |
| CN206153069U (en) * | 2016-11-07 | 2017-05-10 | 广东显诺科技有限公司 | Rotatable heterotypic dispensing valve |
| CN206535705U (en) * | 2017-02-27 | 2017-10-03 | 浙江英特来光电科技有限公司 | A kind of dispensing needle head of horseshoe clamp bottom opening |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111036494B (en) | 2021-08-27 |
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