CN217621949U - Needle valve type multi-point glue feeding nozzle - Google Patents
Needle valve type multi-point glue feeding nozzle Download PDFInfo
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- CN217621949U CN217621949U CN202221431827.4U CN202221431827U CN217621949U CN 217621949 U CN217621949 U CN 217621949U CN 202221431827 U CN202221431827 U CN 202221431827U CN 217621949 U CN217621949 U CN 217621949U
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Abstract
The utility model relates to an injection moulding equipment technical field specifically discloses a needle valve formula multiple spot advances gluey nozzle, include: the nozzle body is internally provided with a body accommodating cavity and at least two glue injection runners; the nozzle core is arranged at an outlet of the glue injection runner through the sprue bush; the heating coil surrounds the outside of the nozzle body; the body insert is positioned in the body accommodating cavity; the lower end of each valve needle is inserted into a nozzle core; and the driving end of the linear driving mechanism is in transmission connection with the upper end of each valve needle and is used for driving each valve needle to synchronously move up and down. The utility model provides a needle valve formula multiple spot advances gluey nozzle can effectively solve current gluey nozzle and be applied to the lower problem of big back central point position department temperature of cost higher and with nozzle body diameter size when carrying out the injecting glue scene of a plurality of pouring gates.
Description
Technical Field
The utility model relates to an injection moulding equipment technical field especially relates to a needle valve formula multiple spot advances gluey nozzle.
Background
The injection system generally includes an injection machine for melting the compound and a glue inlet nozzle for injecting the melted compound into a gate of the injection mold. Referring to fig. 1, the conventional glue injection nozzle includes:
the nozzle comprises a nozzle body 1, wherein a glue injection runner 101 is arranged in the nozzle body 1;
the nozzle core 5 is arranged at an outlet of the glue injection runner 101 through the sprue bush 6, and the nozzle core 5 is used for injecting glue to a sprue gate of an injection mold;
the heating coil 2 surrounds the outside of the nozzle body 1, and heat is provided for each glue injection runner 101 through the nozzle body 1 so as to prevent the glue from being cooled and solidified;
the lower end of the valve needle 7 is inserted into the nozzle core 5;
and the driving end of the linear driving mechanism 8 is connected with the upper end of the valve needle 7 and is used for driving the valve needle 7 to move downwards to close the glue outlet of the chewing core 5 or driving the valve needle 7 to move upwards to open the glue outlet of the chewing core 5.
The existing glue inlet nozzle has the following problems:
(1) one heating coil 2 can only heat one glue injection runner 101, the heating efficiency is low, when glue injection is required to be performed on a plurality of pouring gates of an injection mold, a plurality of heating coils 2 are required, and the cost is high;
(2) if a plurality of glue injection runners 101 are arranged in the nozzle body 1, the diameter of the nozzle body 1 must be increased, otherwise, the distance between two adjacent nozzle cores 5 is too small, so that the nozzle cores 5 and the sprue bush 6 are easily broken; however, when the diameter of the nozzle body 1 is increased, the distance from the heat generating coil 2 to the center of the nozzle body 1 (i.e., the axis of the nozzle body 1) is increased, and the thermal conductivity of the nozzle body 1 itself is poor, so that the temperature at the center of the nozzle body is low, which tends to cause cold glue.
Therefore, the existing glue inlet nozzle needs to be improved so as to solve the problems that the manufacturing cost is high when the nozzle is applied to a glue injection scene with a plurality of pouring ports, and the temperature at the central position is low after the diameter size of the nozzle body is increased.
The above information disclosed in this background section is only included to enhance understanding of the background of the disclosure and therefore may contain information that does not form the prior art that is currently known to one of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a needle valve formula multiple spot advances gluey nozzle, can effectively solve present advance gluey nozzle and be applied to the lower problem of big back central point position department temperature of the cost when carrying out the injecting glue scene of a plurality of pouring gates higher and do nozzle body diameter size.
In order to achieve the above object, the utility model provides a needle valve formula multiple spot advances gluey nozzle, include:
the nozzle comprises a nozzle body, wherein a body accommodating cavity and at least two glue injection runners arranged around the body accommodating cavity are formed in the nozzle body;
the nozzle core is used for injecting glue to a pouring gate of an injection mold;
the heating coil surrounds the outside of the nozzle body;
the body insert is positioned in the body accommodating cavity and used for improving the heat transfer speed in the nozzle body;
the lower end of each valve needle is inserted into one nozzle core;
and the driving end of the linear driving mechanism is in transmission connection with the upper end of each valve needle and is used for driving each valve needle to move downwards to close the glue outlet of each chewing core or driving each valve needle to move upwards to open the glue outlet of each chewing core.
Optionally, the system further includes a flow dividing assembly, where the flow dividing assembly includes:
the nozzle body is arranged at the bottom of the flow distribution plate, and a plate containing groove is formed in the position, corresponding to the nozzle body, of the flow distribution plate; the flow distribution plate is provided with a main drainage channel communicated with an injection machine;
an in-board insert located in the in-board-receiving slot; a plurality of sub-drainage channels are formed between the outer surface of the in-plate insert and the wall of the in-plate containing groove; each branch drainage channel is aligned with each glue injection flow channel one by one, and each branch drainage channel is communicated with the main drainage channel.
Optionally, the thermal conductivity of the in-plate insert is greater than the thermal conductivity of the manifold.
Optionally, the in-plate insert is copper foil.
Optionally, the thermal conductivity of the body insert is greater than the nozzle body.
Optionally, the body insert is red copper.
Optionally, each glue injection runner surrounds the body insert and is uniformly arranged at equal intervals.
Optionally, the heating coil further comprises an outer sleeve sleeved outside the heating coil.
The utility model has the advantages that the needle valve type multi-point glue feeding nozzle is provided, when glue is required to be injected to the sprue gate of the injection mold, the linear driving mechanism drives each valve needle to be lifted upwards to open the glue outlet, and glue material flows into the sprue gate from the glue injection runner; when the pouring gate of the injection mold is not required to be injected with glue, the linear driving mechanism drives the valve needles to move downwards so as to block the glue outlet, and glue cannot enter the pouring gate. In the process:
on one hand, only one controller and one heating coil are used for heating a plurality of glue injection runners in the nozzle body, and further, each glue injection runner can inject glue to one sprue gate of the injection mold, so that the needle valve type multipoint glue injection nozzle provided by the utility model meets the requirement of glue injection of the plurality of sprue gates by using one controller and one heating coil, and is beneficial to reducing the manufacturing cost;
on the other hand, the body insert is arranged at the central position of the nozzle body, so that the heat transfer speed in the nozzle body 1 can be increased, and the glue injection flow channel and the glue in the nozzle core are prevented from being cooled and solidified due to too low temperature.
Therefore, the utility model provides a needle valve formula multiple spot advances gluey nozzle can effectively solve current advance gluey nozzle and be applied to when carrying out the injecting glue scene of a plurality of pouring gates cost is higher and do the lower problem of big back central point position department temperature with nozzle body diameter size.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a conventional glue inlet nozzle provided in the background art.
Fig. 2 is a schematic structural diagram of a needle valve type multi-point glue inlet nozzle provided by the embodiment.
In the figure:
1. a nozzle body; 101. injecting glue runner;
2. a heat generating coil;
3. a jacket;
4. a body insert;
5. a nozzle core;
6. a sprue bush;
7. a valve needle;
8. a linear drive mechanism;
9. a flow diversion assembly; 901. a flow distribution plate; 902. an in-plate insert; 903. a main drainage channel; 904. dividing a drainage channel; 905. and the angle is 90 degrees.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below 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 efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
The present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes that can be made by those skilled in the art according to these embodiments are all included in the scope of the present invention.
The utility model provides a needle valve formula multiple spot advances gluey nozzle is applicable to the application scene in injecting molten sizing material to injection mold's sprue gate, and cost is higher and do the lower problem of big back central point department's temperature with nozzle body diameter size when it can effectively solve current advance gluey nozzle and be applied to the injecting glue scene that carries out a plurality of sprue gates.
Referring to fig. 2, the needle valve type multi-point glue feeding nozzle provided by this embodiment includes a flow dividing assembly 9, a nozzle body 1, a heating coil 2, an outer sleeve 3, a plurality of nozzle cores 5, a plurality of gate sleeves 6, a plurality of valve needles 7, and a linear driving mechanism 8.
The manifold assembly 9 includes a manifold plate 901 and a plate insert 902. The nozzle body 1 is installed at the bottom of the flow distribution plate 901, and a plate containing groove is formed in the position, corresponding to the nozzle body 1, of the flow distribution plate 901; wherein, the flow distribution plate 901 is provided with a main drainage channel 903 for communicating with an injection machine. The in-plate insert 902 is located in the in-plate containment groove; a plurality of branch drainage channels 904 are formed between the outer surface of the in-plate insert 902 and the groove walls of the in-plate containing grooves, and each branch drainage channel 904 is communicated with the main drainage channel 903.
The nozzle body 1 is provided with a body accommodating cavity and at least two glue injection runners 101 arranged around the body accommodating cavity, wherein each of the branch drainage channels 904 is aligned with and communicated with each of the glue injection runners 101 one by one. Each glue injection runner 101 is internally provided with a nozzle core 5, each nozzle core 5 is arranged at the outlet of one glue injection runner 101 through one sprue bush 6, and the nozzle core 5 is used for injecting glue to the sprue of the injection mold. Each nozzle core 5 is correspondingly provided with a valve needle 7, the lower end of the valve needle 7 is inserted into the nozzle core 5, and the upper end of the valve needle 7 extends to the outside of the nozzle body 1 and is connected with the driving end of a linear driving mechanism 8. When the linear driving mechanism 8 extends out, all the valve needles 7 can be driven to move downwards simultaneously to seal the glue outlets of all the nozzle cores 5 simultaneously, and glue injection to the pouring gate of the mold is stopped; when the linear driving mechanism 8 retracts, all the valve needles 7 can be driven to move upwards simultaneously to open the glue outlets of all the nozzle cores 5 simultaneously, and glue injection is started to the pouring gate of the mold.
The outer sleeve 3 is sleeved outside the nozzle body 1. The heating coil 2 surrounds the outside of the nozzle body 1 and is located between the nozzle body 1 and the outer sleeve 3, and is used for providing heat for the nozzle body 1. The body insert 4 is located in the body accommodating cavity and used for improving the heat transfer speed inside the nozzle body 1.
It should be noted that, in the needle valve type multi-point glue injection nozzle provided in this embodiment, when glue needs to be injected to the gate of the injection mold, the linear driving mechanism 8 drives each valve needle 7 to rise upward to open the glue outlet, and the glue flows into the gate from the glue injection runner 101; when the pouring gate of the injection mold is not required to be injected with glue, the linear driving mechanism 8 drives the valve needles 7 to move downwards to block the glue outlet, and the glue cannot enter the pouring gate. In the process:
on one hand, the plurality of glue injection runners 101 in the nozzle body 1 can be heated only by using one heating coil 2, and further, each glue injection runner 101 can inject glue to one sprue gate of the injection mold, so that the needle valve type multipoint glue injection nozzle provided by the embodiment meets the requirement of glue injection of the plurality of sprue gates by using one heating coil 2, and is beneficial to reducing the manufacturing cost;
on the other hand, the body insert 4 is arranged at the central position of the nozzle body 1, so that the heat transfer speed in the nozzle body 1 can be increased, and the glue in the glue injection runner 101 and the nozzle core 5 is prevented from being cooled and solidified due to too low temperature.
Therefore, the utility model provides a needle valve formula multiple spot advances gluey nozzle can effectively solve current advance gluey nozzle and be applied to when carrying out the injecting glue scene of a plurality of pouring gates cost is higher and do the lower problem of big back central point position department temperature with 1 diameter size of nozzle body.
In this embodiment, the thermal conductivity of the body insert 4 is greater than that of the nozzle body 1. For example, the nozzle body 1 is steel and the body insert 4 is aluminum or red copper.
Optionally, the needle valve formula multiple spot advances gluey nozzle that this embodiment provided, the quantity of injecting glue runner 101 can be two, three, four or even more, the utility model discloses do not limit to this. Further, the glue injection flow passages 101 are uniformly arranged around the body insert 4 at equal intervals, so that the body insert 4 can uniformly release heat to the glue injection flow passages 101.
In the prior art, the in-plate insert 902 is not arranged in the flow distribution plate 901, and when the rubber material flows in the flow distribution channel 904, the temperature dissipation at the 90-degree corner 905 (commonly called as "dead angle") of the flow distribution channel is most obvious, so that the rubber material is easy to cool and solidify when flowing into the position, after solidification, the rubber material cannot flow at the dead angle or the flowing speed is very slow, and after a long time, the rubber material at the dead angle is left in the flow distribution channel, is decomposed and yellowed, and affects the appearance of a final product. In this embodiment, add the inboard insert 902 that contacts with nozzle body 1 in flow distribution plate 901, the heat on the nozzle body 1 can be transmitted to branch drainage channel 904 through inboard insert 902, because the coefficient of heat conductivity of inboard insert 902 is greater than the coefficient of heat conductivity of flow distribution plate 901, consequently, the heat on the nozzle body 1 can transmit 90 corners 905 department of drainage channel more fast, avoid the sizing material cooling solidification of this department, and then avoid the sizing material to decompose the emergence that yellows and influence the product appearance condition.
Optionally, the flow distribution plate 901 is made of steel, and the plate insert 902 is made of aluminum or red copper.
Optionally, the linear driving mechanism 8 may be an air cylinder or an oil cylinder, and the embodiment is not limited.
The needle valve formula multiple spot advances gluey nozzle that this embodiment provided possesses following advantage:
(1) the diameter of the nozzle body is larger, a plurality of nozzle cores and sprue bushes can be accommodated at the same time, and the temperature of the nozzle cores can be controlled by only using one heating coil and one controller, so that the cost of a hot runner is reduced;
(2) the multi-head glue inlet nozzle is used for replacing a plurality of traditional single-head glue inlet nozzles, the required space volume is effectively reduced, and small products are arranged;
(3) a linear driving mechanism simultaneously controls a plurality of valve needles to synchronously move up and down, so that the glue outlets of the nozzle cores are opened and closed simultaneously, and the condition that glue feeding of products is unbalanced due to the fact that the glue outlets are opened asynchronously is avoided;
(4) a large hole is drilled in the center of the nozzle body, and then a red copper or body insert with good thermal conductivity is embedded in the large hole in an interference fit manner, so that the problem that the injection molding failure of a product is caused because the local temperature of an injection runner is too low because the heat generated by a heating coil outside the nozzle body cannot be well transferred to the center of the nozzle body due to the fact that the nozzle body is too large is solved;
furthermore, the body insert is in interference fit with the nozzle body, the expansion coefficient of the body insert made of red copper is larger than that of the nozzle body made of iron, so that the body insert is more tightly supported in the nozzle body at higher temperature, the contact between the body insert and the nozzle body is tighter, and the heat conduction performance is better;
(5) the split drainage channel in the split flow assembly is in butt joint with the glue injection runner, the in-plate insert is adopted for switching, the in-plate insert is embedded in the split flow plate through the principle of expansion with heat and contraction with cold, heat can be quickly transferred to glue at a dead corner, molten plastic cannot stay in the split flow assembly, and the decomposition and yellowing conditions are avoided;
(6) the nozzle body is arranged on the flow distribution plate, so that later maintenance and replacement are facilitated, and the maintenance cost is reduced;
(7) the flow distribution plate is provided with a plurality of small cushion blocks, and the small cushion blocks are processed by using materials with poor heat conductivity, so that heat on the flow distribution plate is prevented from being transmitted to the injection mold through the cushion blocks, and a heat preservation effect is achieved; further, traditional cushion block design is at a big cushion block of needle excircle design, and the needle is avoided to the centre, and the material is extravagant seriously, and the material of former production cushion can be done 7 to 8 at present, and traditional cushion block volumetric ratio is bigger, and the cushion block material is iron, and the heat conductivity is better, and is many with injection mold's area of contact, and the heat that causes the flow distribution plate loses speed about 10 times at present.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. A needle valve type multipoint glue feeding nozzle is characterized by comprising:
the nozzle comprises a nozzle body, wherein a body accommodating cavity and at least two glue injection runners arranged around the body accommodating cavity are formed in the nozzle body;
the nozzle core is used for injecting glue to a pouring gate of an injection mold;
the heating coil surrounds the outside of the nozzle body;
the body insert is positioned in the body accommodating cavity and used for improving the heat transfer speed in the nozzle body;
the lower end of each valve needle is inserted into one nozzle core;
and the driving end of the linear driving mechanism is in transmission connection with the upper end of each valve needle and is used for driving each valve needle to move downwards to close the glue outlet of each chewing core or driving each valve needle to move upwards to open the glue outlet of each chewing core.
2. The needle valve type multi-point glue nozzle according to claim 1, further comprising a flow distribution assembly, said flow distribution assembly comprising:
the nozzle body is arranged at the bottom of the flow distribution plate, and a plate containing groove is formed in the position, corresponding to the nozzle body, of the flow distribution plate; the flow distribution plate is provided with a main drainage channel communicated with an injection machine;
an in-board insert located in the in-board-receiving slot; a plurality of sub-drainage channels are formed between the outer surface of the in-plate insert and the wall of the in-plate containing groove; each branch drainage channel is aligned with each glue injection flow channel one by one, and each branch drainage channel is communicated with the main drainage channel.
3. The needle valve style multiple-point glue-feed nozzle according to claim 2, wherein said in-plate insert has a thermal conductivity greater than said manifold.
4. The needle valve type multi-point glue-feed nozzle according to claim 3, wherein the insert is red copper.
5. The needle valve style multiple spot size nozzle of claim 1, wherein the body insert has a thermal conductivity greater than the nozzle body.
6. The needle valve type multi-point glue-feeding nozzle according to claim 5, wherein the body insert is red copper.
7. The needle valve type multi-point glue injection nozzle according to claim 1, wherein the glue injection flow passages are uniformly arranged around the body insert at equal intervals.
8. The needle valve type multi-point glue injection nozzle according to claim 1, further comprising an outer sleeve sleeved outside the heat generating coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221431827.4U CN217621949U (en) | 2022-06-09 | 2022-06-09 | Needle valve type multi-point glue feeding nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221431827.4U CN217621949U (en) | 2022-06-09 | 2022-06-09 | Needle valve type multi-point glue feeding nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217621949U true CN217621949U (en) | 2022-10-21 |
Family
ID=83625572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221431827.4U Active CN217621949U (en) | 2022-06-09 | 2022-06-09 | Needle valve type multi-point glue feeding nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217621949U (en) |
-
2022
- 2022-06-09 CN CN202221431827.4U patent/CN217621949U/en active Active
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