CN112172006B

CN112172006B - Foaming film coating equipment for producing expansion valve heat insulation cotton

Info

Publication number: CN112172006B
Application number: CN202011095557.XA
Authority: CN
Inventors: 秦伟军; 王爱平
Original assignee: Changzhou Fengjin Plastic Technology Co ltd
Current assignee: Changzhou Fengjin Plastic Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2022-07-08
Anticipated expiration: 2040-10-14
Also published as: CN112172006A

Abstract

The utility model relates to a foaming laminating equipment for producing expansion valve heat preservation cotton belongs to the field of foaming equipment, including die carrier down, go up the die carrier, install the bed die of die carrier down and install the bed die at last die carrier, the bed die includes die holder and lower pressure frame, the die holder is fixed on the die carrier down, the middle part of the one side of die carrier is kept away from down to the die holder is provided with first shaping boss, lower pressure frame is articulated with one edge of die holder, first shaping boss is located the last pressure frame, it includes upper die base and last pressure frame to go up the die, the upper die base is fixed on last die carrier, the one side middle part that the die carrier was kept away from to the upper die base is fixed and is provided with second shaping boss, it is articulated with one edge of upper die base to go up the pressure frame, second shaping boss is located the lower pressure frame, be formed with the foaming chamber between first shaping boss and the second shaping boss. In the process of foaming production, the production process of the PU film coated on the surface of the foaming sponge is realized, the foaming and film covering are completed simultaneously, and the production efficiency is improved.

Description

Foaming film coating equipment for producing expansion valve heat insulation cotton

Technical Field

The application relates to the field of foaming equipment, in particular to foaming film coating equipment for producing expansion valve heat insulation cotton.

Background

The expansion valve is a common component, and is widely used in a refrigeration system, so that a medium-temperature high-pressure liquid refrigerant is throttled by the expansion valve to become low-temperature low-pressure wet steam, and the flow of the valve is controlled. The expansion valve heat preservation cotton mainly comprises foaming sponge, an upper PU film and a lower PU film, wherein the upper PU film and the lower PU film are coated outside the foaming sponge, and the expansion valve heat preservation cotton is used for preserving heat of the expansion valve, so that the influence of the environmental temperature on the expansion valve is reduced, and the use performance of the expansion valve is guaranteed.

Relevant notice is CN 207190127U's chinese utility model patent, and it discloses a economize material polyurethane foaming mould, including last mould and bed die, go up inside being formed with the foaming chamber after mould and the bed die closure, be formed with the aspirating hole on the foaming mould, aspirating hole external connection has air exhaust device, after air exhaust device takes out the foaming chamber into the negative pressure, uses the injection rifle to carry foaming liquid to foam in the foaming chamber. Through extracting the air to the foaming chamber, make the foaming intracavity produce the negative pressure to make the foaming more even, and the setting of negative pressure still makes the foaming multiplying power increase of sponge, thereby saves the foaming liquid material.

In view of the above-mentioned related technologies, the inventor believes that the above-mentioned mold can only perform the foaming operation of the foaming liquid, and after the foaming sponge is formed, the foaming sponge needs to be separately coated with an adhesive, which results in low production efficiency.

Disclosure of Invention

In order to improve the problem that foaming and tectorial membrane separately-operated, production efficiency is low, this application provides a foaming tectorial membrane equipment for producing expansion valve heat preservation cotton.

The application provides a foaming laminating equipment for producing expansion valve heat preservation is cotton adopts following technical scheme:

the utility model provides a foaming laminating equipment for producing expansion valve heat preservation is cotton, includes die carrier, last die carrier, installs the bed die of die carrier down and installs the last mould at last die carrier down, it includes upper die base and last pressure frame to go up the mould, the upper die base is fixed on last die carrier, the fixed first shaping boss that is provided with in one side middle part that last die carrier was kept away from to the upper die base, it is articulated with one side edge of upper die base to go up the pressure frame, first shaping boss is located last pressure frame, the bed die includes die holder and pushes down the frame down, the die holder is fixed under on the die carrier, the middle part of the one side of die carrier is kept away from down to the die holder is provided with second shaping boss, it is articulated with one side edge of die holder to push down the frame, second shaping boss is located the frame of pushing down, be formed with the foaming chamber between first shaping boss and the second shaping boss.

By adopting the technical scheme, when the expansion valve heat insulation cotton is produced, the pre-prepared upper layer PU film is laid on the first forming boss, and the periphery of the upper layer PU film is pressed and fixed by the upper pressing frame; the lower PU film prepared in advance is laid on the second forming boss, the lower pressing frame compresses tightly and fixes the periphery of the lower PU film, then a proper amount of foaming liquid is injected into the foaming cavity, the upper die and the lower die are closed to foam, the foaming liquid continuously expands until the foaming liquid is filled, and meanwhile, the lower PU film and the upper PU film are adhered to the surface of the foaming sponge expanded by the foaming liquid, so that the production process of coating the PU film on the surface of the foaming sponge is realized in the foaming production process, the foaming film covering is completed simultaneously, and the production efficiency is greatly improved.

Optionally, a plurality of membrane fixing felting needles are fixedly arranged on the end surfaces of the peripheral edges of the upper pressing frame.

By adopting the technical scheme, when the upper PU film is arranged between the upper die base and the upper pressing frame, the upper PU film is not easy to be flatly paved on the upper die base under the action of gravity and is easy to slip, so that the installation is inconvenient. The setting of deciding the membrane felting needle improves the installation convenience of upper PU membrane, during the installation, tightens upper PU membrane and paves, pierces through the corner and deciding the membrane felting needle fixedly around the upper PU membrane to be difficult for the landing, the installation is simple.

Optionally, be provided with the subassembly of kick-backing between pushing down frame and the die holder, the subassembly of kick-backing includes the spring, and the one side that the die holder is close to the pushing down frame is provided with the mounting groove, the spring is located the mounting groove, the one end of spring and the bottom surface fixed connection of mounting groove, when pushing down frame and die holder pass through quick fixture hasp laminating fixedly, the spring is in compression state, the one end and the pushing down frame butt that the die holder was kept away from to the spring.

Through adopting above-mentioned technical scheme, after the foaming tectorial membrane of product is accomplished, the orientation that pushes down the frame and to keeping away from the die holder under the spring action of spring removes, thereby make and push down and produce the clearance between frame and the die holder, push down the frame and break away from with the periphery of lower floor's PU membrane, when the orientation upset of lower mould is kept away from to last mould under drive arrangement's drive, lower floor's PU membrane border all around can directly be taken out from the space between frame and the die holder of pushing down, thereby make the lower floor's PU membrane of product difficult by pushing down the frame tear, improve product quality.

Optionally, four circumferential corners of the lower die base are fixedly provided with positioning concave blocks, four circumferential corners of the upper die base are correspondingly and fixedly provided with positioning convex blocks, and when the upper die and the lower die are closed, the positioning convex blocks are embedded with the positioning concave blocks.

By adopting the technical scheme, when the upper die and the lower die are closed, the positioning convex block is embedded with the positioning concave block, so that the closing of the upper die and the lower die is positioned, the closing precision of the upper die and the lower die is ensured, and the foaming film covering quality is improved.

Optionally, a driving device is arranged between the upper die frame and the lower die frame, the driving device is used for driving the upper die frame to rotate towards or away from the lower die frame, the driving device comprises a driving cylinder, the driving cylinder is hinged and fixed on the upper die, and a piston rod of the driving cylinder is hinged with the lower die frame.

By adopting the technical scheme, when the upper die and the lower die are closed, a worker only needs to start the driving device to start the driving cylinder, the piston rod of the driving cylinder extends to drive the upper die frame to rotate towards the lower die frame, so that the upper die is attached to the lower die to complete closing; and when the production is finished, the driving cylinder is restarted, so that the piston rod of the driving cylinder retracts, and the die sinking of the upper die and the lower die is realized. Therefore, the die closing and opening operations are simple and convenient, and the production efficiency is improved.

Optionally, be provided with the lock device between last die carrier and the lower die carrier, the lock device is used for the compound die of last mould and bed die fixed, the lock device includes and colludes board and lower board and the lock cylinder of colluding on colluding, on collude the board and fix the one end department of keeping away from drive arrangement at last die carrier, collude the articulated one end of fixing keeping away from drive arrangement at the die carrier down of board down, collude board and collude board looks lock joint down, the lock cylinder is installed in the bottom of last die carrier, the piston rod of lock cylinder colludes the one end that the board kept away from on colluding with the board down and articulates.

Through adopting above-mentioned technical scheme, when upper and lower mould compound die carried out the foaming production of product, collude board and collude board looks lock joint down, carry out the mode locking to upper and lower mould for upper and lower mould is difficult for taking place the transaction when foaming, guarantee foaming quality and product quality.

Optionally, be provided with spacing subassembly between die carrier and the last die carrier down, spacing subassembly includes spacing pad foot and spacing post, spacing pad foot is fixed in the one side that last die carrier is close to die carrier down, spacing pad post is fixed in the one side that die carrier is close to last die carrier down.

Through adopting above-mentioned technical scheme, when upper and lower mould is when the compound die, when drive stroke too big problem appears in drive cylinder drive if drive arrangement's drive actuating cylinder drive, make mould and bed die take place acutely to collide the extrusion easily, cause upper and lower mould to damage, and the rotation stroke of mould is gone up through the restriction in the setting of spacing subassembly, protect upper and lower mould, the rotation stroke of mould is too big when, spacing pad foot and spacing post butt reduce the collision extrusion between upper die and the bed die.

Optionally, a needling air bleeder is arranged on the upper die base and comprises a plurality of needling cylinders and needles, the plurality of needling cylinders are fixed on one surface of the upper die base close to the upper die base, piston rods of the needling cylinders are fixedly connected with the needles, the piston rods of the cylinders and the needles penetrate through the upper die base, and one end of each needling, far away from the cylinder, penetrates through the first forming boss.

Through adopting above-mentioned technical scheme, when foaming tectorial membrane production, the staff is close to the fixed upper PU membrane of preparing in advance of surface laminating of lower mould at the upper mould, the fixed lower floor PU membrane of surface laminating of upper mould is close to at the lower mould, after injecting into the foaming liquid in the foaming intracavity, with upper mould and lower mould compound die, foaming, along with foaming goes on, unnecessary gas is extruded to upper portion gradually in the foaming intracavity, acupuncture gassing equipment starts this moment, acupuncture piston rod drives the direction removal of felting needle towards the lower mould, the felting needle is worn out the lower mould and is punctured upper PU membrane, the foaming liquid constantly foams the inflation and is full of the foaming chamber, and discharge unnecessary gas in the pinhole that the upper PU membrane was punctured, thereby make the difficult bulging that appears of product tectorial membrane, make the tectorial membrane product level and smooth.

Optionally, the inside of the upper die base is hollow to form a first water cavity, the inside of the lower die base is hollow to form a second water cavity, a first hot water pipe is arranged in the first water cavity, a second hot water pipe is arranged in the second water cavity, the water inlet end of the first hot water pipe penetrates out of the upper die base and is communicated with a circulating water heater, the water outlet end of the circulating water heater is communicated with the water inlet end of the first hot water pipe, the water outlet end of the first hot water pipe is communicated with the water inlet end of the second hot water pipe, and the water outlet end of the second hot water pipe penetrates out of the lower die base and is communicated with the water inlet end of the circulating water heater.

By adopting the technical scheme, the upper die and the lower die are heated and insulated simultaneously, so that the temperature in the upper die and the lower die is maintained in a range suitable for foaming reaction, the influence of the external temperature on the foaming process is reduced, and good foaming speed and foaming quality are guaranteed; the first hot water pipe is communicated with the second hot water pipe, heat generated by the circulating water heater is fully utilized, and temperature difference between the upper die and the lower die is reduced, so that the temperature of the upper die and the temperature of the lower die are balanced, and the foaming speed and the foaming quality are further ensured.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the upper pressing frame and the lower pressing frame, the production process of coating the PU film on the surface of the foaming sponge is realized in the foaming production process, the foaming and film covering are completed simultaneously, and the production efficiency is improved;

2. the positioning convex block and the positioning concave block are arranged, so that the positioning effect on the die assembly of the upper die and the lower die is realized, the die assembly precision of the upper die and the lower die is ensured, and the foaming film covering quality is improved;

3. through setting up the fixed membrane felting needle, be convenient for fix upper PU membrane on last pressure frame, improve the operation convenience.

Drawings

Fig. 1 is a schematic overall structure diagram of an open state of a foaming and film-coating device for producing expansion valve insulation cotton according to an embodiment of the present application.

Fig. 2 is an overall structural schematic diagram of a closed state of a foaming film-coating device for producing insulation cotton of an expansion valve according to an embodiment of the present application.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic view of the overall structure of the upper mold in the embodiment of the present application.

Fig. 5 is a partially enlarged view of a portion a in fig. 3.

Fig. 6 is a schematic view of the entire structure of the lower mold in the embodiment of the present application.

Fig. 7 is a partially enlarged view of a portion B in fig. 6.

Description of reference numerals: 1. feeding a mold frame; 2. a lower die frame; 21. a connecting frame; 22. a base; 23. a floating seat; 24. a support cylinder; 3. an upper die; 31. an upper die holder; 311. positioning the bump; 32. pressing the frame upwards; 321. a film-fixing pricking pin; 33. a first molding boss; 34. a quick clamp hasp; 35. a first water chamber; 351. a first hot water pipe; 4. a lower die; 41. a lower die holder; 411. positioning the concave block; 42. pressing the frame downwards; 43. a second molding boss; 44. a foaming chamber; 45. a vacuum chamber; 451. an air intake duct; 46. a rebound assembly; 461. a spring; 462. a guide bar; 463. a gasket; 464. adjusting the nut; 47. a second water chamber; 471. a second hot water pipe; 5. a drive device; 51. a driving cylinder; 52. a drive mounting; 53. a connecting rod; 54. a limiting component; 541. a limiting column; 542. limiting and cushioning the feet; 6. a fastening device; 61. an upper hook plate; 62. a lower hook plate; 63. buckling the connecting rod; 64. buckling the driving rod; 65. fastening the cylinder; 7. a needling deflation device; 71. a needling cylinder; 72. needles 73, needle holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a foaming laminating device for producing expansion valve heat-preservation cotton. Referring to fig. 1, the foaming and laminating equipment comprises an upper die frame 1, a lower die frame 2, an upper die 3 and a lower die 4, wherein the upper die frame 1 is rotatably connected with the lower die frame 2, a driving device 5 is arranged between the upper die frame 1 and the lower die frame 2, and the driving device 5 is used for driving the upper die frame 1 to rotate towards or away from the lower die frame 2. The upper die 3 is arranged on one surface of the upper die frame 1 close to the lower die frame 2, and the lower die 4 is arranged on one surface of the lower die frame 2 close to the upper die frame 1. A buckling device 6 is arranged between the upper die frame 1 and the lower die frame 2, and the buckling device 6 is used for fixing the upper die 3 and the lower die 4 in a mode locking way.

Referring to fig. 1 and 2, the driving device 5 includes a driving cylinder 51 and a driving mounting frame 52, the driving cylinder 51 is hinged and fixed on the driving mounting frame 52, the driving mounting frame 52 is welded and fixed on the upper die frame 1, a connecting frame 21 is arranged between the upper die frame 1 and the lower die frame 2, the connecting frame 21 is vertically welded and fixed on one edge of the lower die frame 2, one end of the connecting frame 21, which is far away from the lower die frame 2, is hinged and fixed with the upper die frame 1, a connecting rod 53 is welded and fixed on one surface of the lower die frame 2, which is close to the connecting frame 21, and a piston rod of the driving cylinder 51 is hinged and fixed with the connecting rod 53.

Referring to fig. 1, a limiting assembly 54 is arranged between a lower die frame 2 and an upper die frame 1, the limiting assembly 54 includes a limiting pad 542 and a limiting post 541, the limiting pad 542 is welded and fixed on the upper die frame 1 and is located on two sides of one end of the upper die frame 1, which is far away from a driving device 5, and the limiting post 541 is welded on the lower die frame 2 and is located on two sides of one end of the upper die frame 1, which is far away from the driving device 5. Each of the position-limiting pad 542 corresponds to each of the position-limiting posts 541, and when the upper and lower molds 4 are closed, the position-limiting pad 542 and the position-limiting post 541 are in the same straight line.

Referring to fig. 1 and 3, the fastening device 6 includes two upper hook plates 61, two lower hook plates 62, a fastening driving rod 64, and a fastening cylinder 65, where the two upper hook plates 61 are all welded and fixed on an end surface of the upper mold frame 1 far away from the driving device 5, and the two lower hook plates 62 are located at one end of the lower mold frame 2 far away from the connecting frame 21. The lower die carrier 2 is kept away from a terminal surface of the drive device 5 and is welded and fixed with a buckling connecting rod 63, the buckling connecting rod 63 is horizontally arranged, and the two lower hook plates 62 are hinged with the buckling connecting rod 63. The buckling cylinder 65 is fixedly installed at the bottom of the lower die carrier 2, a piston rod of the buckling cylinder 65 is rotatably connected with the middle of the buckling driving rod 64, one end of the buckling driving rod 64 is hinged with one end, away from the upper hook plate 61, of one lower hook plate 62, and the other end of the buckling driving rod 64 is hinged with one end, away from the upper hook plate 61, of the other lower hook plate 62. The buckling cylinder 65 is started, the piston rod of the buckling cylinder 65 drives the buckling driving rod 64 to move, and the buckling driving rod 64 drives the lower hook plate 62 to rotate around the buckling connecting rod 63.

Referring to fig. 1 and 3, the lower die carrier 2 includes a base 22 and a floating seat 23, the floating seat 23 is located between the lower die 4 and the base 22, the lower die 4 is fixedly installed on the floating seat 23, two supporting cylinders 24 are fixedly installed in the base 22, the two supporting cylinders 24 are symmetrically arranged along the center of the base 22, and piston rods of the supporting cylinders 24 penetrate through the base 22 and are welded and fixed with the floating seat 23. Support cylinder 24 is when unoperated state, laminates mutually between floating seat 23 and the base 22, and when buckling device 6 starts to make and colludes mutually the lock between board 61 and the lower board 62 of colluding, at this moment, support cylinder 24 starts, promotes floating seat 23 rebound to it is tight with the mutual lock of lower board 62 of colluding to go up to collude board 61, and it is tight to improve the mode locking effect of buckling device 6.

Referring to fig. 4, the upper mold 3 includes an upper mold base 31 and an upper press frame 32, the upper mold base 31 is welded and fixed on the upper mold base 1, a first forming boss 33 is formed at a middle portion of one side of the upper mold base 31 away from the upper mold base 1 and protrudes outwards, the upper press frame 32 is hinged to one edge of the upper mold base 31, and when the upper press frame 32 is attached to the upper mold base 31, the first forming boss 33 is located in the upper press frame 32. The end surfaces of the peripheral edges of the upper pressure frame 32 are welded with a plurality of membrane fixing pricker needles 321, so that the upper layer PU membrane can be conveniently installed.

Referring to fig. 4 and 5, the upper mold 3 is provided with the needling deflation device 7, the needling deflation device 7 includes a plurality of needling cylinders 71 and needles 72, the number of the needling cylinders 71 can be four, the four needling cylinders 71 are fixedly mounted on one surface of the upper mold 3 away from the lower mold 4, piston rods of the needling cylinders 71 are welded and fixed with the needles 72, the piston rods of the needling cylinders 71 and the needles 72 are all arranged in the upper mold 3 in a penetrating manner, four needling holes 73 are arranged on the surface of the first forming boss 33 close to the lower mold 4, and each needling hole 73 corresponds to each needle 72 and is coaxial with the same. When the needling cylinder 71 is started, the needle 72 is driven by the piston rod of the needling cylinder 71, and one end of the needle 72, which is far away from the cylinder, penetrates through the needling hole 73 and pierces and lays the upper PU film fixed on the surface of the first forming boss 33.

Referring to fig. 6, the lower mold 4 includes a lower mold base 41 and a lower pressing frame 42, the lower mold base 41 is welded and fixed on the lower mold base 2, a second forming boss 43 is formed in the middle of one surface of the lower mold base 41 away from the lower mold base 2 and protrudes outwards, the lower pressing frame 42 is hinged to one edge of the lower mold base 41, and when the lower pressing frame 42 is attached to the lower mold base 41, the second forming boss 43 is located in the upper pressing frame 32.

Referring to fig. 6 and 7, be provided with resilience subassembly 46 between lower pressure frame 42 and the die holder 41, the one side that the die holder 41 is close to lower pressure frame 42 is provided with the mounting groove, the mounting groove is located the both ends department of die holder 41 length direction, resilience subassembly 46 is provided with two sets ofly, resilience subassembly 46 includes spring 461, guide rod 462 and gasket 463, each guide rod 462 is worn to establish in each mounting groove perpendicularly, the one end threaded connection that the guide rod 462 wears out the mounting groove bottom has adjusting nut 464, the other end and the gasket 463 welded fastening of guide rod 462, spring 461 is located the mounting groove and overlaps and establish outside guide rod 462, the one end and the gasket 463 butt of spring 461, the other end and the bottom welded fastening of mounting groove. The guide rod 462 plays a role of guiding and supporting the extension and contraction of the spring 461, and the elastic force of the spring 461 is adjusted by rotating the adjusting nut 464 to adjust the length of the spring 461. When the lower frame 42 and the lower die holder 41 are bonded and fixed, the spring 461 is compressed, and the washer 463 abuts against one surface of the lower frame 42 close to the lower die holder 41.

Referring to fig. 5 and 6, a vacuum chamber 45 is provided in the lower die holder 41, a suction pipe 451 is provided at one side of the lower die holder 41, one end of the suction pipe 451 is communicated with the vacuum chamber 45, the other end of the suction pipe 451 is communicated with a vacuum pump (not shown), a plurality of suction holes are provided on the second molding boss 43, and the suction holes are communicated with the vacuum chamber 45. After the lower-layer PU film is laid between the lower die holder 41 and the lower press frame 42, the vacuum pump is started to suck vacuum in the vacuum cavity 45, so that the lower-layer PU film is tightly attached to the lower die holder 41. In this embodiment, compared with a relatively common structure in which the vacuum cavities 45 are respectively disposed in the upper die holder 31 and the lower die holder 41, the upper PU film is easily scratched by the edge of the suction hole under the action of suction force, so that the foaming liquid is sucked into the vacuum cavities 45 of the upper die holder 31. And the vacuum cavity 45 is arranged only on the lower die holder 41 for vacuum suction, the upper PU film is tensioned and stretched through the film fixing pricker 321, and meanwhile, the upper PU film is attached to the upper die 3 for forming under the action of foaming expansion of foaming liquid, so that the forming quality of the product is still ensured under the condition of reducing operation steps and requirements.

Referring to fig. 4 and 6, two sets of quick clamp buckles 34 are respectively installed between the upper die holder 31 and the upper press frame 32 and between the lower die holder 41 and the lower press frame 42, the quick clamp buckles 34 are located at one ends of the upper die 3 and the lower die 4 away from the driving device 5, and the quick clamp buckles 34 are used for locking and fixing the upper die holder 31 and the upper press frame 32 and the lower die holder 41 and the lower press frame 42. Four peripheral edges of the lower die holder 41 are integrally formed with positioning concave blocks 411, four peripheral edges of the upper die holder 31 are correspondingly integrally formed with positioning convex blocks 311, when the upper die 3 and the lower die 4 are closed, the positioning convex blocks 311 are embedded with the positioning concave blocks 411, and a foaming cavity 44 is formed between the first forming boss 33 and the second forming boss 43.

Referring to fig. 5, a first water cavity 35 is formed in the upper die base 31, a first hot water pipe 351 is arranged in the first water cavity 35, and the first hot water pipe 351 is bent and arranged in the first water cavity 35 in an S shape. A second water cavity 47 is arranged in the lower die holder 41, the second water cavity 47 is located at the bottom of the vacuum cavity 45, a second hot water pipe 471 is located in the second water cavity 47, the second hot water pipe 471 is arranged in the second water cavity 47 in an S-shaped bending mode, the water inlet end of the first hot water pipe 351 penetrates out of the upper die holder 31 and is communicated with a circulating water heater (not shown in the figure), the water outlet end of the circulating water heater is communicated with the water inlet end of the first hot water pipe 351, the water outlet end of the first hot water pipe 351 is communicated with the water inlet end of the second hot water pipe 471, and the water outlet end of the second hot water pipe 471 penetrates out of the lower die holder 41 and is communicated with the water inlet end of the circulating water heater.

The implementation principle of the foaming and laminating equipment for producing the expansion valve heat-preservation cotton is as follows: when the production of the expansion valve heat insulation cotton is carried out, the upper die 3 and the lower die 4 are in a die opening state, an upper layer PU film prepared in advance is firstly laid on the upper surface of the upper pressing frame 32, the upper layer PU film is tightened and paved, the peripheral corners of the upper layer PU film and the film fixing pricker 321 penetrate and are fixed, the upper layer PU film is made not to slide easily, the upper pressing frame 32 is overturned and attached towards the upper die base 31, the periphery of the upper layer PU film is pressed and fixed, and the upper pressing frame 32 and the upper die base 31 are locked by the quick clamp hasp 34. And then, laying a pre-prepared lower-layer PU film on a second forming boss 43, turning and attaching the lower pressing frame 42 towards the lower die holder 41, pressing and fixing the periphery of the lower-layer PU film, and locking the upper pressing frame 32 and the upper die holder 31 by using the quick clamp buckle 34.

Then, the vacuum pump is started to suck vacuum in the vacuum chamber 45, so that the lower PU film is tightly attached to the surface of the second molding boss 43, and then a proper amount of foaming liquid is injected into the foaming chamber 44. Then, the driving device 5 is started to drive the piston rod of the driving cylinder 51 to extend, and the upper die frame 1 is driven to rotate towards the lower die frame 2, so that the upper die 3 is attached to the lower die 4, and die assembly is completed. Subsequently, the supporting cylinder 24 is activated to push the floating seat 23 to move upward, so that the upper hook plate 61 and the lower hook plate 62 are fastened and tightened with each other.

Foaming liquid foams and expands gradually in the foaming cavity 44, redundant gradual gas in the foaming cavity 44 is extruded to the upper portion, the acupuncture air bleeder 7 is started at the moment, a piston rod of the acupuncture cylinder 71 drives the puncture needle 72 to move towards the direction of the lower die 4, the puncture needle 72 penetrates through the acupuncture hole 73 and punctures the upper PU film, the foaming liquid foams and expands continuously to fill the foaming cavity 44, the redundant gas is discharged from a pinhole formed by puncturing the upper PU film, and the upper PU film and the lower PU film are adhered to the foaming sponge, so that the product film is not easy to bulge, and the film is smooth.

During this period, the circulation water heater continuously supplies hot water into the first hot water pipe 351, the first hot water pipe 351 heats and keeps warm inside the upper mold 3, the hot water flows from the first hot water pipe 351 into the second hot water pipe 471, the second hot water pipe 471 heats and keeps warm the lower mold 4 so that the internal temperature of the foaming chamber 44 is maintained at a temperature suitable for rapid foaming, and then the hot water flows back into the circulation water heater from the second hot water pipe 471 to be recycled.

Foaming liquid foaming expansion and with upper PU membrane and lower floor PU membrane adhesion, after the foaming tectorial membrane is accomplished, support cylinder 24 starts, and support cylinder 24's piston rod retracts, makes floating seat 23 fall back on base 22. Subsequently, the buckling device 6 is started, so that the upper hook plate 61 and the lower hook plate 62 are separated, then, the quick clamp hasp 34 between the lower pressing frame 42 and the lower die holder 41 is opened, the lower pressing frame 42 moves towards the direction far away from the lower die holder 41 under the action of the elastic force of the spring 461, so that the lower pressing frame 42 is separated from the periphery of the lower-layer PU film, then, the driving device 5 is started, the upper die 3 driven by the driving device 5 is turned towards the direction far away from the lower die 4, the peripheral edge of the lower-layer PU film is drawn out from the gap between the lower pressing frame 42 and the lower die holder 41, so that the lower-layer PU film is not easily torn by the lower pressing frame 42, finally, the quick clamp hasp 34 between the upper pressing frame 32 and the upper die holder 31 is opened, and the product with the foamed coating film is taken out.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a foaming laminating equipment for producing expansion valve heat preservation is cotton, includes die carrier (2) down, goes up die carrier (1), installs in die carrier (2) down bed die (4) and install last mould (3) at last die carrier (1), its characterized in that: the upper die (3) comprises an upper die holder (31) and an upper press frame (32), the upper die holder (31) is fixed on the upper die frame (1), a first forming boss (33) is fixedly arranged in the middle of one surface of the upper die holder (31) far away from the upper die carrier (1), the upper pressing frame (32) is hinged with one edge of the upper die base (31), the first forming boss (33) is positioned in the upper pressing frame (32), the lower die (4) comprises a lower die holder (41) and a lower pressing frame (42), the lower die holder (41) is fixed on the lower die frame (2), a second forming boss (43) is arranged in the middle of one surface of the lower die holder (41) far away from the lower die frame (2), the lower pressing frame (42) is hinged with one edge of the lower die holder (41), the second forming boss (43) is positioned in the lower pressing frame (42), a foaming cavity (44) is formed between the first molding boss (33) and the second molding boss (43); the needling air release device (7) is arranged on the upper die holder (31), the needling air release device (7) comprises a plurality of needling cylinders (71) and needles (72), the plurality of needling cylinders (71) are fixed on one surface, close to the upper die holder (1), of the upper die holder (31), a piston rod of each needling cylinder (71) is fixedly connected with the needle (72), the piston rods of the needling cylinders (71) and the needles (72) are arranged in the upper die holder (31) in a penetrating manner, and one end, far away from the needling cylinders (71), of each needle penetrates through the first forming boss (33); a plurality of membrane fixing pricker needles (321) are fixedly arranged on the end surfaces of the peripheral edges of the upper pressure frame (32).

2. The foaming and laminating device for producing the thermal insulation cotton for the expansion valve as claimed in claim 1, wherein: be provided with between pushing down frame (42) and die holder (41) subassembly (46) that kick-backs, subassembly (46) that kick-backs includes spring (461), and die holder (41) is close to the one side of pushing down frame (42) and is provided with the mounting groove, spring (461) are located the mounting groove, the one end of spring (461) and the bottom surface fixed connection of mounting groove, when pushing down frame (42) and die holder (41) and laminating fixedly through quick clamp hasp (34), spring (461) are in compression state, the one end and the pushing down frame (42) butt that lower holder (41) were kept away from in spring (461).

3. The foaming and laminating device for producing the thermal insulation cotton for the expansion valve as claimed in claim 1, wherein: four peripheral corners of the lower die holder (41) are fixedly provided with positioning concave blocks (411), four peripheral corners of the upper die holder (31) are correspondingly and fixedly provided with positioning convex blocks (311), and when the upper die (3) and the lower die (4) are combined, the positioning convex blocks (311) are embedded with the positioning concave blocks (411).

4. The foaming and laminating device for producing the thermal insulation cotton for the expansion valve as claimed in claim 1, wherein: go up and be provided with drive arrangement (5) between die carrier (1) and lower die carrier (2), drive arrangement (5) are used for driving die carrier (1) orientation or keep away from down the direction rotation of die carrier (2), drive arrangement (5) are including driving actuating cylinder (51), it is fixed on last die carrier (1) to drive actuating cylinder (51) articulated, the piston rod that drives actuating cylinder (51) is articulated with lower die carrier (2).

5. The foaming and laminating device for producing the thermal insulation cotton for the expansion valve as claimed in claim 4, wherein: go up and be provided with lock device (6) between die carrier (1) and lower die carrier (2), lock device (6) are used for going up the compound die of mould (3) and lower mould (4) and are fixed, lock device (6) including last board (61) and lower board (62) and lock cylinder (65) of colluding, go up and collude board (61) and fix the one end department of keeping away from drive arrangement (5) in last die carrier (1), collude the articulated one end of fixing keeping away from drive arrangement (5) in die carrier (2) down of board (62), collude board (62) and last board (61) looks lock joint down, the bottom in last die carrier (1) is installed in lock cylinder (65), the piston rod of lock cylinder (65) colludes board (62) down and keeps away from the one end of colluding board (61) articulated.

6. The foaming and laminating device for producing the thermal insulation cotton for the expansion valve according to claim 5, wherein the device comprises: lower die carrier (2) and go up and be provided with between die carrier (1) spacing subassembly (54), spacing subassembly (54) are including spacing pad foot (542) and spacing post (541), spacing pad foot (542) are fixed in last die carrier (1) the one side of die carrier (2) down of being close to, spacing post (541) are fixed in the one side that die carrier (2) are close to last die carrier (1) down.

7. The foaming and laminating device for producing the thermal insulation cotton for the expansion valve as claimed in claim 1, wherein: the die comprises an upper die holder (31), a lower die holder (41), a first water cavity (35) and a second water cavity (47) are formed in the upper die holder (31) in a hollow mode, a first hot water pipe (351) is arranged in the first water cavity (35), a second hot water pipe (471) is arranged in the second water cavity (47), the water inlet end of the first hot water pipe (351) penetrates out of the upper die holder (31) to be communicated with a circulating water heater, the water outlet end of the circulating water heater is communicated with the water inlet end of the first hot water pipe (351), the water outlet end of the first hot water pipe (351) is communicated with the water inlet end of the second hot water pipe (471), and the water outlet end of the second hot water pipe (471) penetrates out of the lower die holder (41) to be communicated with the water inlet end of the circulating water heater.