CN116733188A - Reinforced keel - Google Patents
Reinforced keel Download PDFInfo
- Publication number
- CN116733188A CN116733188A CN202310660911.6A CN202310660911A CN116733188A CN 116733188 A CN116733188 A CN 116733188A CN 202310660911 A CN202310660911 A CN 202310660911A CN 116733188 A CN116733188 A CN 116733188A
- Authority
- CN
- China
- Prior art keywords
- foaming
- keel
- section
- core layer
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005187 foaming Methods 0.000 claims abstract description 144
- 210000000078 claw Anatomy 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims abstract description 12
- 239000012792 core layer Substances 0.000 claims description 45
- 239000010410 layer Substances 0.000 claims description 13
- 239000002344 surface layer Substances 0.000 claims description 11
- 239000012634 fragment Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000005034 decoration Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 40
- 238000005056 compaction Methods 0.000 description 25
- 229910000831 Steel Inorganic materials 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 230000007704 transition Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000004088 foaming agent Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000011162 core material Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical group CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02044—Separate elements for fastening to an underlayer
-
- 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
- B29C44/1271—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being partially covered
-
- 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
- B29C44/58—Moulds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02044—Separate elements for fastening to an underlayer
- E04F2015/0205—Separate elements for fastening to an underlayer with load-supporting elongated furring elements between the flooring elements and the underlayer
Abstract
The utility model relates to a reinforced keel, and belongs to the technical field of building decoration. The utility model provides a reinforce fossil fragments, is in including fossil fragments main part and setting foaming sandwich layer in the fossil fragments main part, fossil fragments main part include bottom plate and two symmetry set up in the bottom plate both sides with bottom plate integrated into one piece's curb plate, the foaming sandwich layer have an upper bearing surface. The utility model provides the reinforced keel which is convenient for the nailing process in the process of installing the plate; the claw that sets up has improved fossil fragments main part with foam sandwich layer's bonding strength and bonding stability.
Description
The utility model relates to a divisional application of a patent application with the application date of '2021, 10 month and 19 days', the application number of 'CN 202111213594.0', and the patent name of 'reinforced keel, manufacturing mould and preparation method'.
Technical Field
The utility model relates to a keel, in particular to a reinforced keel; belonging to the technical field of building decoration.
Background
The keel is generally required to be used for floor installation, and has the waterproof and moistureproof effects, so that the floor is prevented from being directly contacted with the floor, and the construction is simplified, so that the floor is convenient to install and smooth. The keels are generally divided into wood keels, plastic keels and steel keels, the wood keels are easy to rot, the plastic keels are soft, and the foot feel is not ideal after installation. The steel joist paving floor can meet the connection problem between the floor and the steel joist, and screws are difficult to drive into the steel joist.
The Chinese patent document of patent application No. CN00250263.1 discloses a light steel keel. The keel comprises a bottom plate and two symmetrical vertical edges, wherein concave-convex pits which are arranged in rows in a staggered manner are distributed on the surface of the keel; the keel is a light steel keel with a U-shaped section, and when the floor is fixed on the keel by screws, the problem that the screws are difficult to drive into the keel is likely to occur.
Disclosure of Invention
The utility model provides a reinforced keel, which aims to solve the technical problem that the nailing of a light steel keel is difficult in the prior art.
The technical scheme for solving the problems is as follows:
the utility model provides a reinforce fossil fragments, is in including fossil fragments main part and setting foaming sandwich layer in the fossil fragments main part, fossil fragments main part include bottom plate and two symmetry set up in the bottom plate both sides with bottom plate integrated into one piece's curb plate, the foaming sandwich layer have an upper bearing surface.
In the prior art, most of keels used for installing the wood floor are wood keels, and the keels are easy to wet and have short service life; some can use the light steel joist, this kind of fossil fragments need to nail the screw directly into the light steel joist, and the installation is very inconvenient.
In the technical scheme of the utility model, a bottom plate and two side plates of a keel main body are formed by light steel, a hard foaming core layer is arranged in the semi-wrapped keel main body, and the foaming core layer is provided with an upper bearing surface; the foaming core layer can be formed by directly foaming the keel main body as a substrate, and the adhesive force generated in the foaming process exists between the bottom plate and the side plate of the keel main body and the foaming core layer, so that the foaming core layer is firmly combined with the keel main body, and the two parts cannot easily fall off after being installed; when the floor is installed, the lower surface of the floor is contacted with the upper bearing surface, and the floor can be fixed on the reinforced keel by driving the fixing screw into the foaming core layer, so that the floor is definitely more convenient compared with the way of directly driving the fixing screw into the light steel; the foaming core layer is made of hard PVC foaming material.
As the preferable of the technical scheme, the inner side of the upper end of the side plate is provided with a claw, and the upper bearing surface is provided with a concave structure which is adapted to the claw; the claw can limit the foaming core layer, and prevent the foaming core layer from being directly taken up when the floor is disassembled.
Preferably, the claw includes a platform part for preventing the core layer from falling off, and the upper surface of the platform part is coplanar with the upper bearing surface.
As a preferable aspect of the above-mentioned aspect, an end of the platform portion remote from the side plate has a fitting portion; the concave structure comprises a groove matched with the embedded part.
Preferably, the engaging portion is parallel to the side plate.
As a preferable mode of the above technical scheme, the foaming core layer comprises a central foaming area, a surface foaming area and a crust layer; the density of the central foaming area is 0.6-0.8 g/cm 3 The density of the surface layer foaming region is 0.1-0.2 g/cm greater than that of the central foaming region 3 The thickness of the crust layer is 0.2-1.0 mm.
The utility model also provides a die for producing the reinforced keel, which comprises at least one core layer feeding plate, at least one flow dividing plate and at least one foaming plate which are arranged in a butt joint mode in sequence;
the mold is provided with a steel channel component comprising a main channel for the keel main body to pass through and a core layer preparation component comprising a foaming material runner; the main channel comprises a non-foaming section and a foaming section which are connected in sequence; the foaming material flow passage comprises a core layer material feeding passage, a transition joint and a shunt passage group which are communicated in sequence;
the foaming material flow passage extends into the main channel from the upper top wall of the main channel, the outlet of the flow dividing channel group is positioned in the non-foaming section, and the outlet is positioned below the middle part of the non-foaming section; a choke block is arranged on the upper top wall of the foaming section; the upper surface of the flow blocking block is fixedly connected with the upper top wall of the foaming section, the lower surface of the flow blocking block is a curved surface, the curved surface comprises a first guide section, a first compaction section, a transition section, a second guide section and a second compaction section, the starting point of the first guide section is slightly higher than the position of the outlet of the flow dividing channel group, and the end point of the first guide section is lower than the position of the outlet of the flow dividing channel group;
side grooves for the claws to pass through are formed between the two sides of the choke block and the two side walls of the foaming section; a compacting zone for compacting and uniformly grinding the foaming materials flowing out of the diversion channel group is formed among the first guide section, the first compacting section and the bottom surface of the foaming section; a control area for controlling foaming of the foaming material is formed between the transition section and the bottom surface of the foaming section; a surface layer thickness control area is formed between the second guide section and the bottom surface of the foaming section and between the second compaction section and the bottom surface of the foaming section; the compaction area, the control area and the surface layer thickness control area are sequentially and continuously arranged along the transmission direction of the keel main body.
The mold is designed to guide the material to be foamed into the keel main body, foam the material with the keel main body as a substrate to form a structure of the light steel semi-cladding foaming core layer, and in order to achieve the aim, theoretically, only the material to be foamed needs to be conveyed to the surface of the bottom plate of the keel main body, so that the material to be foamed and the keel main body move together into a foaming section to foam the material to be foamed to form the foaming core layer full of the keel main body. In the actual production process, the inventor finds that the upper bearing surface of the molded product can bulge after foaming the cavity to generate a plurality of protrusions which are beyond expectations, and cavities are formed at the clamping jaws, so that the combination of the upper bearing surface and the clamping jaws is not tight. The inventors believe that this is due to the fact that the material to be foamed falls onto the floor of the keel body when entering the foaming chamber, and therefore the inventors add a set of flow dividing channels in the foaming flow channel, the set of flow dividing channels being a plurality of flatThe channels in the rows are preferably circular channels, so that the phenomenon that the material to be foamed is more in the middle and less in two sides when falling onto the bottom plate does not occur, and the material to be foamed is more uniformly distributed in the width direction of the bottom plate; secondly, the inventor finds that the foaming holes generated by free foaming in the foaming cavity are not uniform enough in size, the holding power to nails is not stable enough and is easy to loosen during nailing, so that a flow blocking block is arranged on the upper surface of the foaming cavity, the flow blocking block is very low in design near the first guide section and the first compaction section of the flow distribution channel group outflow opening, a compaction area of 3-4 mm is formed between the bottom plate and the compaction part, and the materials to be foamed are pressed by the first guide sections of the flow blocking blocks when passing through the compaction area on the keel main body and are dispersed towards two sides; the first rolling compaction can compact the material to be foamed falling from the diversion channel, so that the subsequent foaming is more compact, and the material to be foamed begins to foam after passing through the compaction area and entering the control area; in order to limit the foaming rate of the core layer and avoid uneven foam holes, an upward inclined transition section is arranged in the middle of the flow blocking block, a control area below the transition section is a foaming control space with the sectional area increased along the moving direction of the keel main body, and specifically, the transition section is always contacted with the foaming material in the foaming process, and the foaming material is gradually foamed when moving to the outlet of the foaming section by limiting the space of the foaming cavity; the lower curved surface of the choke block further comprises a second guide section and a second compaction section. The inventor does not design the second guide section and the second compaction section initially, the middle part of the upper bearing surface of the produced reinforced keel still has a certain bulge after being placed for a period of time, the bulge parts are required to be cut or polished to remove for flattening the upper surface of the keel, the upper bearing surface of the formed foaming core layer is provided with a crust layer, the bulge parts are cut, the structure of the crust layer is damaged, and the holding power of the foaming core layer to a screw is reduced to a certain extent. For this purpose, the inventors have provided a second guide section and a second compacting section which form a skin thickness control zone with the bottom wall of the foaming section, along which zone the material which has not yet been completely foamed is compressed twice by the second compacting section and subsequently enters at the end of the foaming sectionOne-step foaming fills the whole foaming cavity to finish foaming; the second compaction makes the upper bearing surface of the foaming core lower than the horizontal surface of the keel main body platform part, then the core layer can expand slowly in the process of discharging from the foaming cavity to the cooling device port, so that the upper bearing surface and the horizontal surface of the keel main body platform part are horizontal; the density of the surface foaming region of the finished product is higher than that of the central foaming region, the surface cells are compact, and the density is 0.6-0.8 g/cm 3 0.4 to 0.7 g/cm compared with the bottom layer 3 Slightly bigger; surprisingly, the crust of the bearing surface on the product is firmer compared with the crust without the second guide section and the second compaction section, the holding power for the fixing screw is tighter, and the fixing effect is better; in addition, when the foaming material is pressed down, the foaming surface layer is pressed down, so that the foaming material is more beneficial to filling the inside of the clamping jaw.
Preferably, a cooling device is arranged at the outlet of the foaming section.
As the optimization of the technical scheme, the flow distribution channel group comprises 3-5 flow distribution channels.
Preferably, the core material feeding channel has a transverse section and a vertical section.
The utility model also provides a production method of the reinforced keel, which adopts the die and specifically comprises the following steps:
s1, conveying a light steel sheet into a light steel keel forming machine under the action of a tractor to perform bending operation to form a keel main body;
s2, conveying the molded keel main body into the mold, conveying a core layer foaming material into the mold through the foaming material flow channel by an extruder, enabling the core layer foaming material to fall into the keel main body, and completing foaming in the foaming section to obtain a continuous reinforced keel;
and S3, cooling and cutting the continuous reinforced keels to obtain the reinforced keels.
In summary, the utility model has the following beneficial effects:
1. according to the utility model, the hard foaming core layer is arranged in the keel main body made of the light steel, so that the screw is conveniently used for fixing during construction;
2. the clamping jaw is arranged, so that the bonding strength and the bonding stability of the keel main body and the foaming core layer are improved;
3. the reinforced keel is manufactured through the newly designed die, and has the advantages of good formability and high production efficiency;
4. the utility model solves the problem of protrusion and the like in the production of the reinforced keels through the design of the mould, and the mould has the advantages of ingenious structural design and good formability.
Drawings
Fig. 1 is a side view of a stiffening keel;
fig. 2 is a top view of the reinforcing keel;
FIG. 3 is an elevational side view of the mold;
FIG. 4 is an enlarged view at FIG. 3 f;
FIG. 5 is a cross-sectional view taken at FIG. 3 a-a;
FIG. 6 is a cross-sectional view taken at FIGS. 3 b-b;
FIG. 7 is a cross-sectional view taken along line 3 c-c;
FIG. 8 is a cross-sectional view taken along line d-d of FIG. 3;
FIG. 9 is a cross-sectional view taken at FIGS. 3 e-e;
in the figure, the keel body comprises a 1-keel body, a 2-foaming core layer, a 11-bottom plate, a 12-side plate, a 13-claw, a 21-upper bearing surface, a 22-concave structure, a 131-platform part, a 132-embedded part, a 221-groove, a 201-central foaming area, a 202-surface foaming area and a 203-crust layer;
a-sandwich feeding plate, B-splitter plate, C-foaming plate, S1-main channel, S2-foaming material flow channel, S1-1-non-foaming section, S1-2-foaming section, S2-1-sandwich feeding channel, S2-2-transition joint, S2-3-splitting channel group, S1-21-blocking block, S1-22-curved surface, S1-221-first guiding section, S1-222-first compacting section, S1-223-transition section, S1-224-second guiding section, S1-225-second compacting section, S1-226-side groove, S1-23-compacting section, S1-24-control section, S1-25-surface thickness control section, 3-cooling device.
Detailed Description
The utility model is further explained below with reference to the drawings.
The present embodiments are merely illustrative of the utility model and not limiting of the utility model, and any changes made by those skilled in the art after reading the specification of the utility model will be protected by the patent laws within the scope of the claims.
Example 1
As shown in fig. 1 and 2, the reinforced keel has a foam core layer 2 and a keel main body 1 half-coated with the foam core layer 2, wherein the half-coating means that two sides and bottom surfaces of the foam core layer 2 are coated by the keel main body 1, the keel main body 1 comprises a bottom plate 11 and two side plates 12 symmetrically arranged on two sides of the bottom plate 11 and integrally formed with the bottom plate 11, the side plates 12 are perpendicular to the bottom plate 11, and clamping claws 13 are arranged on the inner sides of the upper ends of the side plates 12. The foaming core layer 2 is provided with an upper bearing surface 21, and concave structures 22 which are matched with the clamping claws 13 are arranged on two sides of the upper bearing surface 21; the claw 13 includes a platform 131 for preventing the core layer from falling off, and the upper surface of the platform 131 is coplanar with the upper bearing surface 21. In the installation structure, the upper bearing surface 21 and the platform 131 are jointly contacted with the lower surface of the floor; the end of the platform 131 away from the side plate 12 has a barb 132; the recess 22 has a groove 221 which mates with the barb 132, the barb 132 being parallel to the side panel 12, so that the foam material fills well under the jaws 13 during foaming of the core. The foaming core layer 2 comprises a central foaming area 201, a surface foaming area 202 and a crust layer 203; the density of the central foaming region 201 is 0.6-0.8 g/cm 3 The density of the surface foaming region 202 is 0.1-0.2 g/cm greater than that of the central foaming region 3 The thickness of the crust layer is 0.2-1.0 mm.
In this embodiment, the keel body 1 is made of light steel, and the foaming core layer is made of the following raw materials: 100 parts of PVC resin, 5 parts of calcium-zinc stabilizer, 0.7 part of foaming agent, 11.5 parts of foaming regulator, 0.6 part of lubricant, 5 parts of foaming auxiliary agent and 65 parts of filler, wherein the foaming agent is AC foaming agent, the foaming regulator is ACR, the lubricant is paraffin, the foaming auxiliary agent is stearic acid, and the filler is calcium.
PVC resin: generally, 8-type resin is selected, the gelation speed is high during processing, the processing temperature is relatively low, the product quality is stable, and the density is easy to control; stabilizing agent: considering environmental protection, effect and price factors, a calcium-zinc stabilizer is selected; foaming agent: the foaming agent AC emits a large amount of heat in the decomposition process, and yellowing in the middle of a section is easy to cause, so that a certain amount of white foaming agent is required to be matched, the decomposition plays a role in absorbing redundant heat energy, and the foaming agent has large mesh number, so that uniform foaming without large cells can be realized; foaming regulator: through research and development and improvement for many years, the process technology of the foaming regulator ACR is more and more pure and the performance quality is more and more stable, the foaming plate is preferably plasticized quickly according to thickness, the foaming regulator with slow plasticizing and high solution strength is selected for the thick plate, and the foaming regulator with high solution strength, such as HF-90, HF-922, HF-950 and the like, is selected; and (3) a lubricant: the principle of lubrication at the middle and later stages of the initial stage is followed, so that materials are protected by a lubricant at each stage, stable production is maintained for a long time without separating out scale, and paraffin is selected; foaming auxiliary agent: in order to increase the fluidity of materials, prevent the mold from being corroded and improve the foam uniformity in the production process, some stearic acid can be added; filler: light calcium carbonate is selected, active calcium is not needed, and the high mesh number is the main.
The preparation method of the reinforced keel specifically comprises the following steps:
s1, conveying a light steel sheet into a light steel keel forming machine under the action of a traction machine, and bending to form a keel main body;
s2, conveying the molded keel main body into the mold;
s3, conveying the core layer foaming material to the die through the foaming material runner by using an extruder, enabling the core layer foaming material to fall into the keel main body, and completing foaming in the foaming section to obtain the reinforced keel.
As shown in fig. 3-9, a mold for producing the reinforced keel comprises two core layer feeding plates a, a flow dividing plate B and two foaming plates C which are arranged in a butt joint mode in sequence;
the mold is provided with a steel channel component comprising a main channel S1 for the keel main body to pass through and a core layer preparation component comprising a foaming material runner S2; the main channel S1 comprises a non-foaming section S1-1 and a foaming section S1-2 which are connected in sequence; the foaming material flow passage S2 comprises a core layer material feeding passage S2-1, a transition joint S2-2 and a flow dividing passage group S2-3 which are sequentially communicated; the foaming material flow passage S2 extends into the main passage S1 from the upper top wall of the main passage S1, the outlet of the flow distribution passage group S2-3 is positioned in the non-foaming section S1-1, and the outlet is positioned below the middle part of the non-foaming section S1-1; the upper top wall of the foaming section S1-2 is provided with a choke block S1-21; the upper surface of the choke block S1-21 is fixedly connected with the upper top wall of the foaming section S1-2, the lower surface of the choke block is a curved surface S1-22, the curved surface S1-22 comprises a first guide section S1-221, a first compaction section S1-222, a transition section S1-223, a second guide section S1-224 and a second compaction section S1-225, wherein the starting point of the first guide section S1-221 is slightly higher than the position of the outlet of the diversion channel group S2-3, and the ending point of the first guide section S1-221 is lower than the position of the outlet of the diversion channel group S2-3; side grooves S1-226 for the clamping claws 13 to pass through are formed between the two sides of the choke block S1-21 and the two side walls of the foaming section S1-2; a compacting zone S1-23 for compacting and uniformly grinding the foaming materials flowing out of the diversion channel group S2-3 is formed among the first guide section S1-221, the first compacting section S1-222 and the bottom surface of the foaming section S1-2; a control area S1-24 for controlling foaming of the foaming material is formed between the transition section S1-223 and the bottom surface of the foaming section S1-2; the second guide section S1-224 and the second compaction section S1-225 form a surface layer thickness control area S1-25 with the bottom surface of the foaming section S1-2; the compaction areas S1-23, the control areas S1-24 and the surface layer thickness control areas S1-25 are sequentially and continuously arranged along the transmission direction of the keel main body.
As shown in fig. 1, the foamed core layer of the reinforced keel produced by the present mold may be divided into a foamed surface layer and a foamed bottom layer by its density division.
The outlet of the foaming section S1-2 is provided with a cooling device, and in the embodiment, the cooling device takes circulating water as a cooling medium.
The split channel group S2-3 comprises 5 split channels.
As can be seen from fig. 3 and 4, the core material feeding channel S2-1 of the foaming channel S2 has a transverse arrangement section and a vertical arrangement section, and the extruder inputs the mixture after the raw materials are uniformly stirred from the side surface, so that the extruder is just convenient to input the mixture.
The lower surface of the first compaction section S1-222 is convex and is provided with a lowest part, the distance between the lowest part and the introduced keel main body 1 is 2mm, the mixture is rolled by the first guide section S2-221 and the first compaction section S2-222, wherein the first guide section S2-221 is responsible for uniform rolling, and the first compaction section S2-222 is responsible for compaction; when the keel body 1 loaded with the mix passes through it, the convexity will grind the mix into 2mm sized flakes, facilitating the mix to be foamed in the next process. In this embodiment, the keel body has a transmission rate of 1m/min and the mix has an extrusion rate of 2.1X10 -4 m 3 In the production process, the mixture can just form a sheet with the size of 2mm on the bottom plate 11; when the foaming material passes through the second guide section S1-224 and the surface layer thickness control area S1-25 below the second compaction section S2-225, the foaming material to be foamed in a softened state at high temperature is pressed down by the second compaction section S2-225, wherein the pressing depth is the lowest protruding depth of the second compaction section S2-225, in the embodiment, 3mm, and the surface layer foaming area 202 of the foaming core layer is more compact and has better skinning effect by the pressing down; after foaming, the density of the surface layer (thickness 3-4 mm) of the foaming core layer is approximately 0.8g/cm 3 The density of the inner core of the foaming core layer is approximately 0.6g/cm 3 The whole reinforced keel is lighter.
Claims (6)
1. A reinforced keel, characterized in that: the foam core layer (2) is arranged in the keel body (1), the keel body (1) comprises a bottom plate (11) and two side plates (12) which are symmetrically arranged on two sides of the bottom plate (11) and are integrally formed with the bottom plate (11), and the foam core layer (2) is provided with an upper bearing surface (21).
2. A reinforced keel according to claim 1, wherein: the inner side of the upper end of the side plate (12) is provided with a claw (13), and the upper bearing surface (21) is provided with a concave structure (22) which is matched with the claw (13).
3. A reinforced keel according to claim 2, wherein: the clamping jaw (13) comprises a platform part (131) for preventing the foam core layer from falling off, and the upper surface of the platform part (131) is coplanar with the upper bearing surface (21).
4. A reinforced keel according to claim 3, wherein: one end of the platform part (131) far away from the side plate (12) is provided with a jogged part (132); the recess structure (22) comprises a groove (221) matched with the embedded part (132).
5. A reinforced keel according to claim 4, wherein: the fitting portion (132) is parallel to the side plate (12).
6. A reinforced keel according to claim 1, wherein: the foaming core layer (2) comprises a central foaming region (201), a surface foaming region (202) and a crust layer (203); the density of the central foaming region (201) is 0.6-0.8 g/cm 3 The density of the surface layer foaming region (202) is 0.1-0.2 g/cm greater than that of the central foaming region 3 The thickness of the crust layer is 0.2-1.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310660911.6A CN116733188A (en) | 2021-10-19 | 2021-10-19 | Reinforced keel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310660911.6A CN116733188A (en) | 2021-10-19 | 2021-10-19 | Reinforced keel |
| CN202111213594.0A CN114012964B (en) | 2021-10-19 | 2021-10-19 | Reinforced keel, manufacturing mold and preparation method |
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| CN202111213594.0A Division CN114012964B (en) | 2021-10-19 | 2021-10-19 | Reinforced keel, manufacturing mold and preparation method |
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| CN202310660911.6A Withdrawn CN116733188A (en) | 2021-10-19 | 2021-10-19 | Reinforced keel |
| CN202111213594.0A Active CN114012964B (en) | 2021-10-19 | 2021-10-19 | Reinforced keel, manufacturing mold and preparation method |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1215422B (en) * | 1986-05-13 | 1990-02-08 | Reifenhaeuser Masch | EXTRUSION FOR THE EXTRUSION OF A PLASTIC TAPE OF THE EXPANDED THERMOPLASTIC TYPE. |
| JP5714807B2 (en) * | 2009-04-23 | 2015-05-07 | 日本ポリプロ株式会社 | Extrusion molding method for polyolefin resin laminated foam sheet |
| CN103101172A (en) * | 2011-11-10 | 2013-05-15 | 湖北高新明辉模具有限公司 | Wood and plastic steel core co-extrusion die |
| DE102011056194A1 (en) * | 2011-12-08 | 2013-06-13 | Veka Ag | A method for producing a plastic hollow profile with at least one hollow chamber provided with a foam body and an extrusion tool therefor |
| CN104309050B (en) * | 2014-09-26 | 2016-09-07 | 德清久特建材有限公司 | A kind of lower bolster of PVC foam plate extrusion die |
| CN210969646U (en) * | 2019-08-01 | 2020-07-10 | 湖北安信塑料模具有限公司 | Solid foaming door frame mould |
| TWI723671B (en) * | 2019-12-10 | 2021-04-01 | 英屬開曼群島商聯冠國際股份有限公司 | Molding mold for PVC foamed wood-like blade |
| CN111873296A (en) * | 2020-08-25 | 2020-11-03 | 东莞市兆盈建材有限公司 | Novel static mixer |
| CN112443120B (en) * | 2020-12-15 | 2021-10-29 | 安徽森泰木塑科技地板有限公司 | PVC co-extrusion foaming floor and preparation method thereof |
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2021
- 2021-10-19 CN CN202310660911.6A patent/CN116733188A/en not_active Withdrawn
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| CN114012964B (en) | 2023-08-22 |
| CN114012964A (en) | 2022-02-08 |
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