CN113878785A - Annotate material rifle head and have its refrigerator cabinet polyurethane and annotate material system - Google Patents
Annotate material rifle head and have its refrigerator cabinet polyurethane and annotate material system Download PDFInfo
- Publication number
- CN113878785A CN113878785A CN202111182809.7A CN202111182809A CN113878785A CN 113878785 A CN113878785 A CN 113878785A CN 202111182809 A CN202111182809 A CN 202111182809A CN 113878785 A CN113878785 A CN 113878785A
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- Prior art keywords
- injection
- cavity
- gun head
- polyurethane
- flow
- Prior art date
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- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 98
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 33
- 239000004814 polyurethane Substances 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 90
- 239000007924 injection Substances 0.000 claims abstract description 90
- 230000009471 action Effects 0.000 claims abstract description 14
- 230000010365 information processing Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
- B29C44/424—Details of machines
- B29C44/425—Valve or nozzle constructions; Details of injection devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/762—Household appliances
- B29L2031/7622—Refrigerators
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a material injection gun head and a refrigerator cabinet polyurethane material injection system with the same, and relates to the technical field of polyurethane injection molding. The gun head comprises a gun head body, wherein a cavity is arranged in the gun head body along the axial direction of the gun head body, a conical injection port communicated with the cavity is arranged at the discharge end of the cavity, a plug is arranged at the injection port in a matched manner, and the tail end of the plug is connected with a connecting rod through a spring; the cavity comprises a first cylindrical cavity with the inner diameter of R1 and a second cylindrical cavity with the inner diameter of R2, and the end part of the second cylindrical cavity is communicated with the injection port; the connecting rod and the spring are positioned in the first cylindrical cavity, and one end of the connecting rod penetrates through the first cylindrical cavity and extends to the outside of the gun head body; the material injection system comprises a material injection gun head, a program input module, an information processing module and an action module. According to the polyurethane filling device, the problem of uneven polyurethane filling caused by large box size is solved through the polyurethane injection system with variable injection flow and the elastic injection gun head.
Description
Technical Field
The invention belongs to the technical field of polyurethane injection molding, and particularly relates to a material injection gun head and a refrigerator cabinet polyurethane material injection system with the same.
Background
Polyurethane foaming is an essential important link in the production and manufacturing process of refrigerator cabinets, the process is a row of a plurality of box body foaming molds (generally 8 or 12 boxes and the like), the row of molds contain box bodies of various different models, polyurethane AB materials are injected into corresponding empty box bodies to be foamed in sequence through high-pressure material injection gun heads, and the material injection pressure and the material injection flow of the gun heads are kept unchanged at present. The polyurethane raw materials are two ingredient AB materials, the AB material is poured into through annotating the material rifle head and is waited the empty box of foaming, annotate the material mode for empty box back department of opening a door place keeping flat up under in the mould, annotate the material rifle head and pour into the back cavity with AB material high pressure from empty box bottom, then the AB material is through a series of physicochemical reactions, become the solid by liquid final reaction with polyurethane AB material and be full of the cavity of whole empty box, form the heat preservation, play the support intensity effect simultaneously.
As can be seen from the above description, the drop point of the polyurethane AB material is controlled in the middle of the box body, which is beneficial to the uniform distribution of polyurethane foam in the cavity of the insulating layer of the box body. At present, two unfavorable conditions appear, and the first condition is that some refrigerator cabinet models are great, the size is longer, and AB material placement is in centre department, and is difficult in the box cavity is filled to even when polyurethane AB material reaction is accomplished, has increased the bad risk of foaming end packing to the foaming defective rate has been increased. The second situation is that because the product models are more, the production of boxes with different models in the same row of moulds can occur, especially the production of the moulds with the same row of models with larger size difference can cause the AB material drop point to be unreasonable, and because the material injection pressure and the material injection flow of the gun head are unchanged, the drop point of the gun head is fixed, so that the drop point with small box size is close to the front, and the drop point with large box size is close to the back. That is, the box body has a large size difference and is difficult to unify the AB material drop points, thereby causing uneven distribution of the foaming AB material and influencing the foaming quality.
In the existing state, polyurethane AB materials of a box body with a larger size are not uniformly distributed due to unchanged injection pressure and injection flow of a gun head, so that the defective rate of foaming quality is increased; meanwhile, when the box body moulds in the same row with large size difference are produced, the distribution of polyurethane AB materials of the box body with small size and large size is not uniform due to the fixed and unadjustable position of the drop point, so that the defective rate of the foaming quality is increased.
Disclosure of Invention
The invention aims to provide an injection gun head and a refrigerator cabinet polyurethane injection system with the same, and the problem of uneven polyurethane filling caused by large box body size is solved through the polyurethane injection system with variable material flow and an elastic injection gun head; the problem of the great same row mould production of box size difference, the polyurethane that leads to fills inhomogeneous is solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a material injection gun head which comprises a gun head body, wherein a cavity is formed in the gun head body along the axial direction of the gun head body, a conical injection port communicated with the cavity is formed in the discharge end of the cavity, a plug is arranged at the injection port in a matched mode, and the tail end of the plug is connected with a connecting rod through a spring.
Further, the cavity comprises a first cylindrical cavity with the inner diameter of R1 and a second cylindrical cavity with the inner diameter of R2, and the end part of the second cylindrical cavity is communicated with the injection port; the connecting rod and the spring are positioned in the first cylindrical cavity, and one end of the connecting rod penetrates through the first cylindrical cavity and extends to the outside of the gun head body; the R1 is more than R2.
Furthermore, the gun head body is also provided with a material A inlet, a material A backflow port, a material B inlet and a material B backflow port.
The injection gun further comprises the injection gun head, a program input module, an information processing module and an action module; the action module is connected with the connecting rod and drives the connecting rod to stretch back and forth in the cavity; the information processing module is used for converting the program of the program input module into an electric signal and sending the electric signal to the action module.
Further, the material injection control method based on the material injection system comprises the following steps:
stp1, inputting the material injection amount and the variable material injection flow through a program input module;
wherein the variable injection flow is set to a flow X1g/s duration Y1s, a flow X2g/s duration Y2s.. a flow Xng/s duration Yns, where n is greater than or equal to 3;
stp2, if the whole actual material injection time T is less than or equal to the duration sigma Y of each flow section, naturally stopping material injection when the material injection time T is finished; and if the integral material injection time T is larger than the set duration sigma Y of each flow section, when the sigma Y time is finished, continuously injecting the materials according to the flow of the last stage until the material injection amount is finished.
The invention has the following beneficial effects:
according to the polyurethane filling device, the problem of uneven polyurethane filling caused by large box size is solved through the polyurethane injection system with variable injection flow and the elastic injection gun head; the problem of uneven polyurethane filling caused by the production of the same-row molds with larger size difference of the box body is solved; because the filling distance of the polyurethane AB material is shortened, the polyurethane filling speed is accelerated, and therefore the polyurethane AB material with higher reaction speed can be adopted, the production efficiency is improved, and the heat insulation performance of the polyurethane is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a material injection gun head according to the invention.
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.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
The gun head nozzle plug is in a bullet shape, the nozzle plug 1 is connected with the connecting rod 3 through the spring 2, therefore, when the injection flow is large, backward force is brought by AB material flow to enable the opening of the gun head nozzle to be large, when the flow is small, the backward force of the nozzle is weakened due to the flow, the nozzle plug 1 is moved forward through the elastic force of the spring 2, the opening of the gun head nozzle is reduced at the moment, and the opening sectional area is reduced, so that the flow speed reduction degree of the AB material due to the reduction of the injection flow is weakened, the AB material drop point cannot generate a fault phenomenon, and the drop point moves backward a little. When the flow of the injected material is reduced at a constant speed, the AB material falling point is in a relatively uniform line segment shape
Example 2, an injection system for an injection lance head according to example 1 above:
the device comprises a program input module, an information processing module, an action module and a material injection gun head; the action module is connected with the connecting rod 3 and drives the connecting rod 3 to stretch back and forth in the cavity 11; the information processing module is used for converting the program of the program input module into an electric signal and sending the electric signal to the action module.
Inputting and storing the material injection programs of the Z box body foaming molds through a program input module, and inputting the corresponding material injection program into the box body corresponding to each mold according to the size characteristics of the model; and starting a polyurethane material injection action, after an empty box to be foamed enters a corresponding mold, positioning an elastic material injection gun head, starting material injection according to a material injection program corresponding to the mold, performing a corresponding material injection action by an action module in the material injection process according to an electric signal given by an information processing module, and adjusting the material injection flow in real time. The falling point of the material injection gun head forms a uniform line segment AB material in the cavity of the box body to be foamed. And after the reaction of the AB material with polyurethane is completed, pushing the box body after the foaming is completed out of the mold, and entering the next step of the process. The material injection gun head moves to the next empty box mold with foaming, then the material injection action is completed according to the corresponding material injection program of the corresponding mold, and the steps are circulated in a reciprocating way
stp1, inputting the material injection amount and the variable material injection flow through a program input module;
wherein the variable injection flow is set to a flow X1g/s duration Y1s, a flow X2g/s duration Y2s.. the flow Xng/s duration Yns, at input n ≧ 3;
stp2, if the whole actual material injection time T is less than or equal to the duration sigma Y of each flow section, naturally stopping material injection when the material injection time T is finished; and if the integral material injection time T is larger than the set duration sigma Y of each flow section, when the sigma Y time is finished, continuously injecting the materials according to the flow of the last stage until the material injection amount is finished.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides an annotate material rifle head which characterized in that: the gun head comprises a gun head body (10), a cavity (11) is formed in the gun head body (10) along the axial direction of the gun head body, a discharge end of the cavity (11) is provided with a conical injection port (8) communicated with the cavity (11), the injection port (8) is provided with a plug (1) in a matching mode, and the tail end of the plug (1) is connected with a connecting rod (3) through a spring (2).
2. A nozzle tip according to claim 1, wherein the cavity (11) comprises a first cylindrical chamber (111) having an internal diameter R1 and a second cylindrical chamber (112) having an internal diameter R2, the ends of the second cylindrical chamber (112) communicating with the injection port (8);
the connecting rod (3) and the spring (2) are located in the first cylindrical cavity (111), and one end of the connecting rod (3) penetrates through the first cylindrical cavity (111) and extends to the outside of the lance head body (10).
3. An injection lance head according to claim 1, wherein R1 > R2.
4. The injection lance head according to claim 1, wherein the lance head body (10) is further provided with a material A inlet (4), a material A backflow port (5), a material B inlet (6) and a material B backflow port (7).
5. A refrigerator cabinet polyurethane injection system is characterized by comprising the injection gun head as claimed in any one of claims 1 to 4, and further comprising a program input module, an information processing module and an action module;
the action module is connected with the connecting rod (3) and drives the connecting rod (3) to stretch back and forth in the cavity (11);
the information processing module is used for converting the program of the program input module into an electric signal and sending the electric signal to the action module.
6. A refrigerator cabinet polyurethane injection system as claimed in claim 5, wherein the injection control method based on the injection system comprises:
stp1, inputting the material injection amount and the variable material injection flow through a program input module;
wherein the variable injection flow is set to a flow X1g/s duration Y1s, a flow X2g/s duration Y2s.. the flow Xng/s duration Yns, at input n ≧ 3;
stp2, if the whole actual material injection time T is less than or equal to the duration sigma Y of each flow section, naturally stopping material injection when the material injection time T is finished; and if the integral material injection time T is larger than the set duration sigma Y of each flow section, when the sigma Y time is finished, continuously injecting the materials according to the flow of the last stage until the material injection amount is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111182809.7A CN113878785B (en) | 2021-10-11 | 2021-10-11 | Annotate material rifle head and have its refrigerator cabinet polyurethane notes material system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111182809.7A CN113878785B (en) | 2021-10-11 | 2021-10-11 | Annotate material rifle head and have its refrigerator cabinet polyurethane notes material system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113878785A true CN113878785A (en) | 2022-01-04 |
| CN113878785B CN113878785B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111182809.7A Active CN113878785B (en) | 2021-10-11 | 2021-10-11 | Annotate material rifle head and have its refrigerator cabinet polyurethane notes material system |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213553A2 (en) * | 2000-12-07 | 2002-06-12 | MESSER GRIESHEIM GmbH | Positioning device for combustible/oxygen lances |
| KR20030025509A (en) * | 2001-09-21 | 2003-03-29 | 동부아디아판넬 주식회사 | Injecting apparatus for poly-urethan |
| KR20140094270A (en) * | 2013-01-22 | 2014-07-30 | 지지케미칼 주식회사 | Injection devic of Two component polyurethane foam |
| CN203739108U (en) * | 2014-01-07 | 2014-07-30 | 东莞市绿的机械设备厂 | Four-component high-pressure injection device |
| CN206154498U (en) * | 2016-10-31 | 2017-05-10 | 中钢天源(马鞍山)通力磁材有限公司 | Automatic material machine of annotating of improved generation permanent magnetic ferrite |
| JP2017105023A (en) * | 2015-12-08 | 2017-06-15 | 株式会社日本製鋼所 | Injection nozzle |
| CN207077694U (en) * | 2017-08-05 | 2018-03-09 | 沈新聚氨酯制品有限公司 | The device of high-pressure injection moulding shoemaking |
| CN108890949A (en) * | 2018-06-01 | 2018-11-27 | 长虹美菱股份有限公司 | A kind of Intelligent Hybrid head filling system and its material feeding method for refrigerator door |
| CN108908835A (en) * | 2018-06-04 | 2018-11-30 | 长虹美菱股份有限公司 | A kind of Intelligent Hybrid head filling system |
| CN109382973A (en) * | 2017-08-05 | 2019-02-26 | 沈新聚氨酯制品有限公司 | The method and device of high-pressure injection moulding shoemaking |
| WO2019086823A1 (en) * | 2017-10-31 | 2019-05-09 | Leafgreen Limited | Spray configuration |
| CN210362164U (en) * | 2019-05-28 | 2020-04-21 | 河北天锐管道设备有限公司 | Discharge valve spring reset type high-pressure mixing head |
| WO2020095014A1 (en) * | 2018-11-09 | 2020-05-14 | Leafgreen Limited | Spray configuration with inlet controls |
| CN113001866A (en) * | 2019-12-20 | 2021-06-22 | 康隆股份公司 | Method and device for casting splash-free polymer mixtures |
-
2021
- 2021-10-11 CN CN202111182809.7A patent/CN113878785B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213553A2 (en) * | 2000-12-07 | 2002-06-12 | MESSER GRIESHEIM GmbH | Positioning device for combustible/oxygen lances |
| KR20030025509A (en) * | 2001-09-21 | 2003-03-29 | 동부아디아판넬 주식회사 | Injecting apparatus for poly-urethan |
| KR20140094270A (en) * | 2013-01-22 | 2014-07-30 | 지지케미칼 주식회사 | Injection devic of Two component polyurethane foam |
| CN203739108U (en) * | 2014-01-07 | 2014-07-30 | 东莞市绿的机械设备厂 | Four-component high-pressure injection device |
| JP2017105023A (en) * | 2015-12-08 | 2017-06-15 | 株式会社日本製鋼所 | Injection nozzle |
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| CN207077694U (en) * | 2017-08-05 | 2018-03-09 | 沈新聚氨酯制品有限公司 | The device of high-pressure injection moulding shoemaking |
| CN109382973A (en) * | 2017-08-05 | 2019-02-26 | 沈新聚氨酯制品有限公司 | The method and device of high-pressure injection moulding shoemaking |
| WO2019086823A1 (en) * | 2017-10-31 | 2019-05-09 | Leafgreen Limited | Spray configuration |
| CN108890949A (en) * | 2018-06-01 | 2018-11-27 | 长虹美菱股份有限公司 | A kind of Intelligent Hybrid head filling system and its material feeding method for refrigerator door |
| CN108908835A (en) * | 2018-06-04 | 2018-11-30 | 长虹美菱股份有限公司 | A kind of Intelligent Hybrid head filling system |
| WO2020095014A1 (en) * | 2018-11-09 | 2020-05-14 | Leafgreen Limited | Spray configuration with inlet controls |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113878785B (en) | 2024-03-19 |
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