CN114654647A - High-pressure foaming preparation process of high-efficiency energy-saving refrigerator - Google Patents
High-pressure foaming preparation process of high-efficiency energy-saving refrigerator Download PDFInfo
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- CN114654647A CN114654647A CN202210261394.0A CN202210261394A CN114654647A CN 114654647 A CN114654647 A CN 114654647A CN 202210261394 A CN202210261394 A CN 202210261394A CN 114654647 A CN114654647 A CN 114654647A
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- foaming
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- box body
- cavity
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- 238000005187 foaming Methods 0.000 title claims abstract description 180
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000004140 cleaning Methods 0.000 claims abstract description 55
- 238000002156 mixing Methods 0.000 claims abstract description 55
- 238000011049 filling Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- 238000003825 pressing Methods 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 208000027418 Wounds and injury Diseases 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000006378 damage Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 208000014674 injury Diseases 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000010405 clearance mechanism Effects 0.000 claims description 2
- 230000037303 wrinkles Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims 1
- 239000006260 foam Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
-
- 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
- B29C44/3415—Heating or cooling
-
- 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
- B29C44/3442—Mixing, kneading or conveying the foamable material
-
- 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
- B29C44/40—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length by gravity, e.g. by casting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a high-efficiency energy-saving freezer high-pressure foaming preparation process, which relates to the field of freezers and comprises the steps of preheating a foaming mould, blending black and white raw materials for foaming, making a foaming sample, weighing and recording a freezer box body to be foamed, foaming the box body, repairing and cleaning the foamed box body, and checking the box body, wherein when foaming is finished, a rubber pad is abutted against the foaming mould, so that the stability when the foaming gun head is drawn out is ensured, meanwhile, the foaming gun head can be effectively prevented from disturbing a foaming material when foaming is carried out on the opening of the foaming mould, the foaming shape at the opening of the foaming mould can be ensured, secondary filling is avoided, the foaming efficiency is greatly improved, and meanwhile, the outer end surface at the opening of the foaming gun head can be cleaned up with residual materials, thereby avoiding influencing the quality of the next foaming.
Description
Technical Field
The invention relates to the field of refrigerators, in particular to a high-pressure foaming preparation process of a high-efficiency energy-saving refrigerator.
Background
In the production process of the refrigerator, the box body needs to be foamed, the foaming of the box body of the refrigerator is an important flow in the production process of the refrigerator, the foaming quality influences the use of the refrigerator, and the foaming speed influences the efficiency of a production line;
and at present carry out the foaming in-process at the freezer box, the foaming rifle is when the foaming is ended, extract the in-process and can produce the vibration to the foamer, thereby lead to the freezer box can't guarantee at the foaming shape of foaming mouth position department, thereby lead to needing to carry out the secondary and repair, greatly reduced production efficiency, simultaneously after the foaming is accomplished because the characteristic of foaming raw materials can lead to the foaming rifle to block up when shutting down the rest, also produce long-pending material very easily in the outer end of foaming rifle, influence the quality of next foaming greatly.
Disclosure of Invention
The invention aims to provide a high-pressure foaming preparation process of a high-efficiency energy-saving freezer, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-pressure foaming preparation process of a high-efficiency energy-saving freezer comprises the following steps:
step one; preheating a foaming mold, and transporting the foaming mold to a heating drying cavity in advance for heating;
step two; blending black and white raw materials for foaming, simultaneously ensuring that the temperature of a black and white material storage tank is controlled at twenty-five ℃ and the nitrogen pressure is 3MPa, respectively inputting isocyanate into the black material storage tank, inputting composite polyether and cyclopentane into a white material storage tank, then stirring, and simultaneously ensuring that the pressures of the two tanks are controlled at 0.2-0.3 MPa;
step three; b, foaming a small sample, namely inputting the prepared black and white materials into a mixing and foaming gun device, and foaming the small sample according to the set small sample time to confirm the mixing effect of the foaming materials;
step four; weighing the refrigerator body to be foamed to record the model and the weight of the refrigerator body, and marking the refrigerator body;
step five; foaming the box body, opening a preheated foaming mold, putting the box body marked in the fourth step into the foaming mold, closing the mold, and controlling a material mixing foaming gun device to a specified foaming area to inject the set foaming material into the box body with the corresponding model according to the process requirement for foaming;
step six; repairing and cleaning the foamed box body, weighing the box body again, comparing the box body with the weight recorded in the fourth step, wherein the weight difference of the box body before and after foaming is the actual filling amount of the foamed material of the box body, and determining the optimal filling amount according to the filling amount and the process parameters;
step seven; and (4) checking whether the box body has the phenomena of pressure injury, scratch, pit and bag, material loss and deformation, and then storing the box body in a box body storage area.
Preferably, the mixing ratio of the combined polyether to the cyclopentane in the second step is 100:13.6, and preheating is needed before mixing the combined polyether, wherein the preheating temperature is controlled at twenty-five ℃.
Preferably, the material mixing and foaming gun device comprises a second body, wherein first bodies are fixedly arranged on the left end surface and the right end surface of the second body respectively, a feeding cavity is arranged in each first body, a circular material mixing cavity is arranged in the second body and is communicated with the two feeding cavities, a material mixing mechanism is arranged between the two feeding cavities and the circular material mixing cavity, a foaming gun tube is fixedly arranged on the lower end surface of the second body, a first flow channel is arranged in the foaming gun tube, a foaming gun head is fixedly arranged on the lower side of the first flow channel, second flow channels are respectively arranged on the left side and the right side of the first flow channel, a spray head assembly is arranged between the two second flow channels and the first flow channel, a third body is slidably sleeved on the foaming gun tube, a fixed sleeve block is fixedly sleeved on the foaming gun tube, and a return spring is connected between the fixed sleeve block and the third body, the third machine body is internally provided with a first space, the first space is in sliding connection with the foaming gun barrel, the outer side wall of the first space is communicated with a second space, a cleaning mechanism is arranged between the foaming gun head and the first space, and a rubber pad is fixedly arranged on the lower end face of the third machine body.
Preferably, the material mixing mechanism comprises a power motor fixedly mounted on the upper end face of the second machine body, a material mixing rotating shaft is fixedly arranged at the output end of the power motor, the material mixing rotating shaft extends downwards to penetrate into the circular material mixing cavity, a material mixer is fixedly arranged on the lower end face of the material mixing rotating shaft, a sealing gasket is fixedly arranged on the upper end face of each first machine body, a feeding pipe is fixedly arranged in each sealing gasket, each feeding pipe is communicated with the corresponding material feeding cavity, an air flow machine is fixedly arranged on one side end face of each first machine body, away from the center line direction of the second machine body, an output pipe of each air flow machine penetrates into the corresponding material feeding cavity, and a switch valve is fixedly arranged at an opening at the lower side of the circular material mixing cavity.
Preferably, the cleaning mechanism comprises annular cleaning blocks rotatably mounted on the upper side wall and the lower side wall of the second space, an annular gear is fixedly arranged on the outer side end face of each annular cleaning block, four sliding rods are respectively and slidably connected to the inner side end face of each annular cleaning block, the four sliding rods are respectively distributed at equal intervals, cleaning fixing blocks are respectively and fixedly arranged on each sliding rod, a compression spring is respectively connected between each cleaning fixing block and the corresponding annular cleaning block, an elastic fluff layer is respectively and fixedly arranged on the upper end face of each cleaning fixing block, each elastic fluff layer is tightly attached to the lower end of the foaming gun head, an annular pressing block is slidably connected to the side wall of the first space, the annular pressing block is slidably sleeved on the foaming gun head, and an extrusion spring is connected between the upper end face of the annular pressing block and the lower end face of the foaming gun barrel, the annular pressing block is internally provided with an annular inner cavity which is communicated with the water flow cavity on the right side, semi-elliptical spray heads are fixedly distributed on the lower end face of the annular pressing block at equal intervals, each semi-elliptical spray head is communicated with the annular inner cavity and is abutted against the upper end face of the corresponding elastic fluff layer, the end face of the annular pressing block close to the foaming gun head is respectively provided with four concave openings and is respectively hinged with a cleaning rod, the left side and the right side of the first space are respectively and symmetrically provided with connecting water cavities, one side of each connecting water cavity far away from the central line direction of the first space is respectively provided with a water flow cavity, each water flow cavity is respectively and fixedly communicated with a water pipe joint, each water pipe joint is communicated with an external water source, and the lower side wall of the water flow cavity on the left side is rotationally connected with a water wheel rotating shaft, the upper end surface of the water wheel rotating shaft is fixedly provided with a water wheel, the lower end surface of the water wheel rotating shaft is fixedly provided with a water wheel gear, and the water wheel gear is meshed with the ring gear.
Preferably, the spray head assembly includes an annular case fixedly installed at an upper side of the first flow path, an annular water cavity is arranged in the annular box body, the lower side wall of the annular water cavity is communicated with the two second flow passages, fifteen sprinkler heads are fixedly distributed on the inner side end face of the annular box body at equal intervals, the fifteen sprinkler heads are arranged in an anticlockwise inclined mode, each sprinkler head is communicated with the annular water cavity, one side, away from the direction of the center line of the first flow channel, of each second flow channel is provided with an opening sliding groove, a pressure valve is fixedly distributed on the lower side of each second flow channel, the opening end of each pressure valve is flush with the side wall, close to the direction of the center line of the first flow channel, of the corresponding opening sliding groove, an L-shaped pipe is fixedly communicated in each connecting water cavity, and each L-shaped pipe is connected with the corresponding opening sliding groove in a sliding mode.
Preferably, the mixer is in a spherical shape with a smooth surface, and stirring cylinders are fixedly arranged on the outer end surface of the mixer in an equidistant and circular manner.
Preferably, the lower end face of each cleaning rod abuts against the edge of the lower end port of the foaming gun head and is pressed into the corresponding elastic fluff layer, and the outer end face of the lower side portion of each cleaning rod is provided with a round ball protrusion, so that each elastic fluff layer covers the corresponding cleaning rod due to elasticity, when the cleaning fixing block rotates, the elastic fluff layer can clean residual foaming materials on the outer end face of the foaming gun head, and meanwhile, the cleaning rods can also scrape and clean the elastic fluff layer in the rotation process of the elastic fluff layer, and accordingly, the phenomenon that the cleaning is affected by the attachment of the foaming materials on the elastic fluff layer is avoided.
Preferably, the outer end face of each elastic fluff layer is in a rough wrinkle shape and is tightly attached to the outer end face of the foaming gun head.
In conclusion, the invention has the beneficial effects that:
according to the invention, when the foaming is finished, the rubber pad is abutted against the foaming mould, so that the stability when the foaming gun head is drawn out is ensured, meanwhile, the foaming gun head can be effectively prevented from disturbing the foaming material when the foaming gun head foams the opening of the foaming mould, the foaming shape at the opening of the foaming mould can be ensured, the secondary filling in the later period is avoided, the foaming efficiency is greatly improved, and meanwhile, the inner cavity of the foaming gun can be washed in the shutdown process, so that the foaming gun is prevented from being blocked, and meanwhile, the residual material can be cleaned from the outer end surface at the outlet of the foaming gun head, and the influence on the quality of the next foaming is avoided.
Drawings
In order to more clearly illustrate the embodiments of the 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, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of a full-section structure of a mixing and foaming gun device in a high-efficiency energy-saving freezer high-pressure foaming preparation process of the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at C;
FIG. 5 is a schematic top view of the annular case 48 and the sprinkler head 50 of FIG. 3 according to the present invention;
fig. 6 is a schematic top view of the annular cleaning block 42, the sliding rod 43 and the fixed cleaning block 44 of fig. 2 according to the present invention.
The scores in the figures are as follows: 10. a first body; 11. a feeding cavity; 12. a feed pipe; 13. a gasket; 14. a second body; 15. a circular mixing cavity; 16. a mixer; 17. a mixing rotating shaft; 18. a power motor; 19. an air flow machine; 20. an on-off valve; 21. a foam gun tube; 22. a second flow passage; 23. a first flow passage; 24. an open chute; 25. fixing the sleeve block; 26. a pressure valve; 27. an L-shaped pipe; 28. a foaming gun head; 29. a water wheel; 30. a water flow chamber; 31. a water wheel rotating shaft; 32. a water pipe joint; 33. a third body; 34. a water wheel gear; 35. connecting the water cavity; 36. a first space; 37. a ring gear; 38. a second space; 39. a rubber pad; 40. an annular pressing block; 41. an annular inner cavity; 42. an annular cleaning block; 43. a slide bar; 44. cleaning the fixed block; 45. an elastic fluff layer; 46. cleaning the rod; 47. a semi-elliptical spray head; 48. an annular box body; 49. an annular water chamber; 50. a sprinkler head.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, front and rear directions described below correspond to the front, back, left, right, top and bottom directions of the view direction of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the directions shown in fig. 1 correspond to the front, back, left, right, top and bottom directions of the apparatus of the present invention.
Referring to fig. 1-6, an embodiment of the present invention is shown: a high-pressure foaming preparation process of a high-efficiency energy-saving freezer comprises the following steps:
step one; preheating a foaming mold, and transporting the foaming mold to a heating drying cavity in advance for heating;
step two; blending black and white raw materials for foaming, simultaneously ensuring that the temperature of a black and white material storage tank is controlled at twenty-five ℃ and the nitrogen pressure is 3MPa, respectively inputting isocyanate into the black material storage tank, inputting composite polyether and cyclopentane into a white material storage tank, then stirring, and simultaneously ensuring that the pressures of the two tanks are controlled at 0.2-0.3 MPa;
step three; b, foaming a small sample, namely inputting the prepared black and white materials into a mixing and foaming gun device, and foaming the small sample according to the set small sample time to confirm the mixing effect of the foaming materials;
step four; weighing the refrigerator body to be foamed to record the model and the weight of the refrigerator body, and marking the refrigerator body;
step five; foaming the box body, opening a preheated foaming mold, putting the box body marked in the fourth step into the foaming mold, closing the mold, and controlling a material mixing foaming gun device to a specified foaming area to inject the set foaming material into the box body with the corresponding model according to the process requirement for foaming;
step six; repairing and cleaning the foamed box body, weighing the box body again, comparing the box body with the weight recorded in the fourth step, wherein the weight difference of the box body before and after foaming is the actual filling amount of the foamed material of the box body, and determining the optimal filling amount according to the filling amount and the process parameters;
step seven; and (4) checking whether the box body has the phenomena of pressure injury, scratch, pit and bag, material loss and deformation, and then storing the box body in a box body storage area.
In addition, in one embodiment, the mixing ratio of the combined polyether to the cyclopentane in the second step is 100:13.6, and preheating is needed before mixing the combined polyether, wherein the preheating temperature is controlled at twenty-five ℃.
In addition, in one embodiment, the mixing and foaming gun device includes a second body 14, first bodies 10 are respectively and fixedly disposed on left and right end surfaces of the second body 14, a feeding cavity 11 is respectively disposed in each first body 10, a circular mixing cavity 15 is disposed in the second body 14, the circular mixing cavity 15 is communicated with the two feeding cavities 11, a mixing mechanism 601 is disposed between the two feeding cavities 11 and the circular mixing cavity 15, a foaming gun tube 21 is fixedly disposed on a lower end surface of the second body 14, a first flow channel 23 is disposed in the foaming gun tube 21, a foaming gun head 28 is fixedly disposed on a lower side of the first flow channel 23, second flow channels 22 are respectively disposed on left and right sides of the first flow channel 23, a gun tube assembly 602 is disposed between the two second flow channels 22 and the first flow channel 23, a third body 33 slides on the foaming gun tube 21, the fixed cover 25 that is equipped with of fixed cover on foaming barrel 21, fixed cover 25 with be connected with reset spring between the third organism 33, be provided with first space 36 in the third organism 33, first space 36 with foaming barrel 21 sliding connection, first space 36 lateral wall intercommunication is provided with second space 38, foaming rifle head 28 with be provided with clearance mechanism 603 between first space 36, the terminal surface sets firmly rubber pad 39 under the third organism 33.
In addition, in one embodiment, the mixing mechanism 601 includes a power motor 18 fixedly installed on the upper end surface of the second body 14, a mixing rotating shaft 17 is fixedly installed at an output end of the power motor 18, the mixing rotating shaft 17 extends downward to penetrate into the circular mixing cavity 15, a mixer 16 is fixedly installed on the lower end surface of the mixing rotating shaft 17, a sealing gasket 13 is fixedly installed on the upper end surface of each first body 10, a feeding pipe 12 is fixedly installed in each sealing gasket 13, each feeding pipe 12 is communicated with the corresponding feeding cavity 11, an air flow machine 19 is fixedly installed on one side end surface of each first body 10 away from the center line direction of the second body 14, each output pipe of the air flow machine 19 penetrates into the corresponding feeding cavity 11, and a switch valve 20 is fixedly installed at an opening at the lower side of the circular mixing cavity 15.
In addition, in one embodiment, the cleaning mechanism 603 includes an annular cleaning block 42 rotatably mounted on the upper and lower side walls of the second space 38, an annular gear 37 is fixedly disposed on an outer end surface of the annular cleaning block 42, four sliding rods 43 are respectively slidably connected to inner end surfaces of the annular cleaning block 42, the four sliding rods 43 are respectively distributed at equal intervals, a cleaning fixing block 44 is respectively fixedly disposed on each sliding rod 43, a compression spring is connected between each cleaning fixing block 44 and the corresponding annular cleaning block 42, an elastic fluff layer 45 is respectively fixedly disposed on an upper end surface of each cleaning fixing block 44, each elastic fluff layer 45 is closely attached to a lower end of the foaming gun head 28, an annular pressing block 40 is slidably connected to a side wall of the first space 36, the annular pressing block 40 is slidably sleeved on the foaming gun head 28, an extrusion spring is connected between an upper end surface of the annular pressing block 40 and a lower end surface of the foaming gun barrel 21, an annular inner cavity 41 is formed in the annular pressing block 40, the annular inner cavity 41 is communicated with the right water flow cavity 30, semi-elliptical spray heads 47 are fixedly distributed on the lower end face of the annular pressing block 40 at equal intervals, each semi-elliptical spray head 47 is communicated with the annular inner cavity 41, each semi-elliptical spray head 47 is abutted to the upper end face of the corresponding elastic fluff layer 45, four concave openings are respectively formed in the end face of the annular pressing block 40 close to the foaming gun head 28 direction and are respectively hinged with a cleaning rod 46, connecting water cavities 35 are respectively symmetrically arranged on the left side and the right side of the first space 36, a water flow cavity 30 is respectively arranged on one side of each connecting water cavity 35 away from the first space 36 in the center line direction, a water pipe connector 32 is respectively fixedly communicated with each water flow cavity 30, and each water pipe connector 32 is communicated with an external water source, the side wall rotates under the rivers chamber 30 and is connected with water wheel pivot 31, water wheel 29 has set firmly on the water wheel pivot 31 up end, water wheel gear 34 has set firmly on the terminal surface under the water wheel pivot 31, water wheel gear 34 with the meshing of ring gear 37.
In addition, in one embodiment, the nozzle assembly 602 includes an annular box 48 fixedly installed on the upper side of the first flow channel 23, an annular water cavity 49 is provided in the annular box 48, the lower side wall of the annular water cavity 49 is communicated with the two second flow channels 22, fifteen spray heads 50 are fixedly distributed and fixedly arranged on the inner side end surface of the annular box 48 at equal intervals, fifteen spray heads 50 are arranged in an anticlockwise inclined manner, each spray head 50 is communicated with the annular water cavity 49, one side of each second flow channel 22 away from the central line direction of the first flow channel 23 is respectively provided with an opening chute 24, a pressure valve 26 is fixedly distributed and fixedly arranged on the lower side of each second flow channel 22 in an azimuth manner, the opening end of each pressure valve 26 is respectively flush with the side wall of the corresponding opening chute 24 close to the central line direction of the first flow channel 23, an L-shaped pipe 27 is fixedly communicated in each connecting water cavity 35, each of the L-shaped pipes 27 is slidably connected to the corresponding open chute 24.
In addition, in one embodiment, the mixer 16 is a round ball with a smooth surface and has stirring cylinders arranged around the outer end surface at equal intervals.
In addition, in one embodiment, the lower end surface of each cleaning rod 46 abuts against the edge of the lower port of the foaming gun head 28 and is pressed into the corresponding elastic fluff layer 45, and the outer end surface of the lower side portion of each cleaning rod 46 is provided with a round ball protrusion, so that each elastic fluff layer 45 covers the corresponding cleaning rod 46 due to elasticity, when the cleaning fixing block 44 rotates, the elastic fluff layer 45 can not only clean the foaming material remaining on the outer end surface of the foaming gun head 28, but also the cleaning rod 46 can clean the elastic fluff layer 45 in the rotation process of the elastic fluff layer 45, thereby preventing the adhesion of the material on the elastic fluff layer 45 from affecting the cleaning.
In addition, in one embodiment, the outer end face of each elastic fluff layer 45 is rough and corrugated, and is tightly attached to the outer end face of the foaming gun head 28.
When a refrigerator is foamed, the left feeding pipe 12 is connected with a foamed black pipe, the right feeding pipe 12 is connected with a foamed white pipe, the two air flow machines 19 are started to press raw materials into the circular mixing cavity 15, the power motor 18 is started at the moment so as to drive the mixer 16 to rotate to mix the two raw materials, the second machine body 14 is controlled to move to a foaming mold position to be foamed by servo driving, the rubber pad 39 is abutted to the foaming mold at the moment, the second machine body 14 is continuously driven to move downwards, the foaming gun pipe 21 is made to slide downwards, the foaming gun head 28 is made to slide downwards, the four cleaning fixing blocks 44 are pushed towards the direction away from the central line of the foaming gun head 28, the foaming gun head 28 extends into the foaming mold, and the switch valve 20 is opened at the moment, so as to perform foaming, when the foaming is about to end, the second body 14 is controlled to move upwards, so that the foaming gun tube 21 moves upwards to reset, at the moment, the rubber pad 39 is still abutted against the foaming mold, the stability when the foaming gun head 28 is drawn out is ensured, meanwhile, the foaming gun head 28 can effectively prevent the foaming gun head 28 from disturbing the foaming material when the foaming gun head 28 foams the opening of the foaming mold, the foaming shape at the opening of the foaming mold can be ensured, the secondary filling in the later period is avoided, at the moment, when the foaming gun head 28 completely resets and foams, the water outlet of the L-shaped pipe 27 close to the center line direction of the first flow passage 23 is abutted against the corresponding pressure valve 26, at the moment, the pressure valve 26 is opened by the water pressure in the L-shaped pipe 27, so that the water flow in the water flow cavity 30 is flushed into the second flow passage 22, and thus into the annular water chamber 49, and thus is ejected through the water jet heads 50, the water flow is ejected through the water jet heads 50 to form a swirling flow in the first flow channel 23 and then down against the inner side wall of the first flow channel 23, thereby greatly improving the scouring force of the water flow and effectively improving the cleaning effect, and simultaneously the water flow drives the water wheel 29 to rotate, thereby driving the water wheel gear 34 to rotate, thereby driving the annular cleaning block 42 to rotate, thereby driving the elastic fluff layer 45 to rotate to clean the foaming material remained on the outer end surface of the foaming gun head 28, at the same time, the water in the annular inner chamber 41 is filled into the elastic fluff layer 45 through the semi-elliptical spray heads 47, so that during the rotation of the elastic fluff layer 45, meanwhile, the elastic fluff layer 45 can be scraped and cleaned, so that the cleaning is prevented from being influenced by the attachment of foaming materials on the elastic fluff layer 45.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (9)
1. A high-pressure foaming preparation process of a high-efficiency energy-saving refrigerator is characterized by comprising the following steps: the method comprises the following steps:
step one; preheating a foaming mold, and transporting the foaming mold to a heating drying cavity in advance for heating;
step two; blending black and white raw materials for foaming, simultaneously ensuring that the temperature of a black and white material storage tank is controlled at twenty-five ℃ and the nitrogen pressure is 3MPa, respectively inputting isocyanate into the black material storage tank, inputting composite polyether and cyclopentane into a white material storage tank, then stirring, and simultaneously ensuring that the pressures of the two tanks are controlled at 0.2-0.3 MPa;
step three; b, foaming a small sample, namely inputting the prepared black and white materials into a mixing and foaming gun device, and foaming the small sample according to the set small sample time to confirm the mixing effect of the foaming materials;
step four; weighing the refrigerator body to be foamed to record the model and the weight of the refrigerator body, and marking the refrigerator body;
step five; foaming the box body, opening a preheated foaming mold, putting the box body marked in the fourth step into the foaming mold, closing the mold, and controlling a material mixing foaming gun device to a specified foaming area to inject the set foaming material into the box body with the corresponding model according to the process requirement for foaming;
step six; repairing and cleaning the foamed box body, weighing the box body again, comparing the box body with the weight recorded in the fourth step, wherein the weight difference of the box body before and after foaming is the actual filling amount of the foamed material of the box body, and determining the optimal filling amount according to the filling amount and the process parameters;
step seven; and (4) checking whether the box body has the phenomena of pressure injury, scratch, pit and bag, material loss and deformation, and then storing the box body in a box body storage area.
2. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 1, which is characterized in that: and in the second step, the mixing ratio of the combined polyether to the cyclopentane is 100:13.6, and preheating is needed before mixing the combined polyether, wherein the preheating temperature is controlled at twenty-five ℃.
3. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 1, which is characterized in that: the material mixing and foaming gun device comprises a second machine body (14), wherein first machine bodies (10) are fixedly arranged on the left end face and the right end face of the second machine body (14) respectively, a feeding cavity (11) is formed in each first machine body (10), a circular material mixing cavity (15) is formed in each second machine body (14), the circular material mixing cavity (15) is communicated with the two feeding cavities (11), a material mixing mechanism (601) is arranged between each two feeding cavities (11) and the corresponding circular material mixing cavity (15), a foaming gun tube (21) is fixedly arranged on the lower end face of each second machine body (14), a first flow passage (23) is formed in each foaming gun tube (21), a foaming gun head (28) is fixedly arranged on the lower side of each first flow passage (23), second flow passages (22) are formed in the left side and the right side of each first flow passage (23), and a spray head assembly (602) is arranged between each two second flow passages (22) and the corresponding first flow passages (23), sliding sleeve is equipped with third organism (33) on foaming barrel (21), fixed cover is equipped with fixed cover piece (25) on foaming barrel (21), fixed cover piece (25) with be connected with reset spring between third organism (33), be provided with first space (36) in third organism (33), first space (36) with foaming barrel (21) sliding connection, first space (36) lateral wall intercommunication is provided with second space (38), foaming rifle head (28) with be provided with clearance mechanism (603) between first space (36), terminal surface has set firmly rubber pad (39) under third organism (33).
4. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 3, which is characterized in that: the mixing mechanism (601) comprises a power motor (18) fixedly mounted on the upper end face of the second machine body (14), a mixing rotating shaft (17) is fixedly arranged at the output end of the power motor (18), the mixing rotating shaft (17) extends downwards to penetrate into the circular mixing cavity (15), a mixer (16) is fixedly arranged on the lower end face of the mixing rotating shaft (17), a sealing gasket (13) is fixedly arranged on the upper end face of each first machine body (10), a feeding pipe (12) is fixedly arranged in each sealing gasket (13), each feeding pipe (12) is communicated with the corresponding feeding cavity (11), an air flow machine (19) is fixedly arranged on one side end face of each first machine body (10) far away from the center line direction of the second machine body (14), and an output pipe of each air flow machine (19) penetrates into the corresponding feeding cavity (11), and a switch valve (20) is fixedly arranged at an opening at the lower side of the circular mixing cavity (15).
5. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 3, which is characterized in that: the cleaning mechanism (603) comprises annular cleaning blocks (42) rotatably mounted on the upper side wall and the lower side wall of the second space (38), an annular gear (37) is fixedly arranged on the end face of the outer side of each annular cleaning block (42), four sliding rods (43) are respectively connected to the end face of the inner side of each annular cleaning block (42) in a sliding manner, the four sliding rods (43) are respectively distributed at equal intervals, cleaning fixing blocks (44) are respectively fixedly arranged on each sliding rod (43), a compression spring is connected between each cleaning fixing block (44) and the corresponding annular cleaning block (42), an elastic fluff layer (45) is respectively fixedly arranged on the upper end face of each cleaning fixing block (44), each elastic fluff layer (45) is tightly attached to the lower port of the foaming gun head (28), and an annular pressing block (40) is slidably connected to the side wall of the first space (36), the annular pressing block (40) is sleeved on the foaming gun head (28) in a sliding mode, an extrusion spring is connected between the upper end face of the annular pressing block (40) and the lower end face of the foaming gun barrel (21), an annular inner cavity (41) is arranged in the annular pressing block (40), the annular inner cavity (41) is communicated with the water flow cavity (30) on the right side, semi-elliptical nozzles (47) are fixedly distributed on the lower end face of the annular pressing block (40) at equal intervals, each semi-elliptical nozzle (47) is communicated with the annular inner cavity (41), each semi-elliptical nozzle (47) is abutted to the upper end face of the corresponding elastic fluff layer (45), four concave openings are respectively arranged on the end face of the annular pressing block (40) close to the foaming gun head (28) in the direction, cleaning rods (46) are respectively hinged to the end faces, connecting water cavities (35) are respectively and symmetrically arranged on the left side and the right side of the first space (36), every connect water cavity (35) to keep away from first space (36) central line direction one side is provided with rivers chamber (30) respectively, every be fixed intercommunication has water pipe head (32) in rivers chamber (30) respectively, every water pipe head (32) all are linked together with external water source, the left side lateral wall rotates under rivers chamber (30) and is connected with water wheel pivot (31), water wheel pivot (31) up end has set firmly water wheels (29), terminal surface has set firmly water wheel gear (34) under water wheel pivot (31), water wheel gear (34) with ring gear (37) meshing.
6. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 5, wherein the high-pressure foaming preparation process comprises the following steps: the sprayer assembly (602) comprises an annular box body (48) fixedly mounted on the upper side of the first flow channel (23), an annular water cavity (49) is arranged in the annular box body (48), the lower side wall of the annular water cavity (49) is communicated with the two second flow channels (22), fifteen water spray heads (50) are fixedly arranged on the inner side end face of the annular box body (48) in an equidistance distribution mode, the fifteen water spray heads (50) are obliquely arranged anticlockwise, each water spray head (50) is communicated with the annular water cavity (49), one side, away from the central line direction of the first flow channel (23), of each second flow channel (22) is respectively provided with an opening chute (24), pressure valves (26) are fixedly arranged on the lower side of each second flow channel (22) in a distributed mode, and the opening ends of each pressure valve (26) are respectively flush with the side walls, close to the central line direction of the first flow channel (23), of the corresponding opening chutes (24), l-shaped pipes (27) are respectively and fixedly communicated with each connecting water cavity (35), and each L-shaped pipe (27) is respectively connected with the corresponding opening sliding groove (24) in a sliding manner.
7. The high-pressure foaming process for preparing high-efficiency energy-saving refrigerator according to claim 3, wherein the process comprises the following steps: the blender (16) is in a spherical shape with a smooth surface, and the outer end surfaces of the blender are annularly distributed at equal intervals and are fixedly provided with stirring cylinders.
8. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 5, wherein the high-pressure foaming preparation process comprises the following steps: the lower end face of each cleaning rod (46) is abutted against the edge of the lower port of the foaming gun head (28) and is pressed into the corresponding elastic fluff layer (45), and spherical bulges are arranged on the outer end face of the lower side part of each cleaning rod (46).
9. The high-pressure foaming preparation process of the high-efficiency energy-saving refrigerator as claimed in claim 5, wherein the high-pressure foaming preparation process comprises the following steps: the outer end face of each elastic fluff layer (45) is in a rough wrinkle shape and is tightly attached to the outer end face of the foaming gun head (28).
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| CN202210261394.0A CN114654647A (en) | 2022-03-16 | 2022-03-16 | High-pressure foaming preparation process of high-efficiency energy-saving refrigerator |
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