EP3377287A1 - A cleaning piston which has a non-polar material for a mixing head, and mixing head and discharge channel, each of which contains such a cleaning piston - Google Patents
A cleaning piston which has a non-polar material for a mixing head, and mixing head and discharge channel, each of which contains such a cleaning pistonInfo
- Publication number
- EP3377287A1 EP3377287A1 EP16794311.7A EP16794311A EP3377287A1 EP 3377287 A1 EP3377287 A1 EP 3377287A1 EP 16794311 A EP16794311 A EP 16794311A EP 3377287 A1 EP3377287 A1 EP 3377287A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing head
- cleaning piston
- piston
- cleaning
- outlet channel
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/802—Constructions or methods for cleaning the mixing or kneading device
- B29B7/803—Cleaning of mixers of the gun type, stream-impigement type, mixing heads
- B29B7/805—Cleaning of the mixing conduit, module or chamber part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7404—Mixing devices specially adapted for foamable substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7615—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7631—Parts; Accessories
- B29B7/7636—Construction of the feed orifices, bores, ports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7631—Parts; Accessories
- B29B7/7636—Construction of the feed orifices, bores, ports
- B29B7/7642—Adjustable feed orifices, e.g. for controlling the rate of feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
- B29B7/7689—Plunger constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
- B29B7/7689—Plunger constructions
- B29B7/7694—Plunger constructions comprising recirculation channels; ducts formed in the plunger
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Definitions
- the invention relates to a cleaning piston for a mixing head of a Christsg tellmaschine (for producing reaction plastics, such as polyurethane foams), with a cylindrical shell portion having base portion and a clearing section, the material and geometrically for removing on a (guide) channel (for conducting is formed / prepared by liquid components of the material / material to be provided) of the mixing head adhering material remains. Furthermore, the invention relates to a mixing head, which is preferably designed as a Umlenkmischkopf, for a reaction casting machine having such a cleaning piston. The invention also relates to a reaction casting machine with in turn such a mixing head and a (preferably glutenabappelbar attachable to a housing of the mixing head) outlet pipe of such a mixing head.
- the evacuation section of the cleaning piston is at least partially made of a non-polar material.
- the cleaning piston By using a non-polar material on the cleaning piston, significantly less material deposits occur during operation of the mixing head due to the lower binding forces.
- the cleaning piston thus remains free of mix, in particular in its evacuation section, and can carry out the cleaning work with the desired geometry during the cleaning state.
- the frictional force between cleaning piston and mixing head / outlet channel of the mixing head is greatly reduced.
- the cleaning piston Due to the non-polar evacuation section, the cleaning piston can also be used simultaneously in a mixing head designed for different mixes. As a result, the conversion effort is significantly reduced. Further advantageous embodiments are claimed in the subclaims and explained in more detail below.
- the clearing section can have an outer circumference that is larger at least partially relative to the jacket area.
- the evacuation section can therefore be widened at least partially in the circumference.
- the evacuation section has a sheath made of a non-polar material. As a result, the evacuation section is made with little effort.
- the sheath is advantageous for the sheath to be shaped as a (preferably cap-shaped) attachment which is held / fixed in a form-locking, force-fitting and / or material-locking manner on / on a mounting pin firmly connected to the base section. As a result, the production of the cleaning piston is performed even more effectively.
- the evacuation section is designed to be particularly wear-resistant. Also, the evacuation section is inexpensive exchangeable.
- the cleaning piston is also particularly robust.
- the base portion may be wholly or additionally made / partially made of a nonpolar material. If the base section is made entirely of a non-polar material, the evacuation section is preferably designed to be integral with the base section. This makes the production of the cleaning piston even more efficient.
- the base portion is partially made of a non-polar material, the non-polar material is preferably made as a coating or also as an attachable (-r) sleeve / socket / attachment.
- evacuation section also expediently has on its outer shell side at least one circumferential groove of the base section / evacuation section or several (preferably equally wide and equally spaced) annular grooves, a particularly effective clearing contour is implemented.
- the evacuation section has at least one sharp-edged contour which is designed to remove the material adhering to the outlet pipe / to the outlet channel during operation. As a result, the cleaning piston is working very efficiently.
- evacuation section is arranged at an axial end region of the base section, forming an axial end face of the cleaning piston, the cleaning of the mixing head / reaction casting machine is further facilitated.
- the invention also relates to a mixing head for a reaction casting machine, which mixing head is preferably designed as Umlenkmischkopf, with a mixing chamber, within which a control piston for regulating a (preferably consisting of at least two components to be mixed components) component flow is arranged (preferably transversely to the mixing chamber extending and in turn adjoining this mixing chamber) outlet channel, as well a cleaning piston inserted into the outlet channel in at least one cleaning state according to at least one of the embodiments described above.
- the mixing head is designed to be particularly easy to maintain.
- the outlet channel at least partially consists / is made of a non-polar material.
- shades / adhesions are also significantly reduced on the part of the mixing head.
- the outlet channel is also resistant to the usual mix.
- the outlet channel is formed / formed in a completely non-polar material housing / housing block of the mixing head, the production of the mixing head can be further simplified.
- the outlet channel advantageously partially in an axial guide region of the non-polar material, in which guide region of the clearing portion of the cleaning piston in the cleaning state (axially) along is displaced / displaced, the non-polar material is used particularly effectively.
- the outlet channel is partially formed by a bush (also referred to as outlet pipe) of the non-polar material.
- This bush is then preferably inserted into the housing of the mixing head, wherein the housing is further preferably made of a polar material, such as a metal material, namely iron material or steel material.
- a polar material such as a metal material, namely iron material or steel material.
- the invention relates to solving the above-described problem also an outlet pipe for a mixing head according to one of the embodiments described above, the is prepared for attachment to a housing of the mixing head, forming a portion of the outlet channel (material and / or geometric) and which outlet pipe at least partially made of a non-polar material (preferably a non-polar plastic material, such as a PIC or a polyamide material) ,
- a non-polar material preferably a non-polar plastic material, such as a PIC or a polyamide material
- the outlet channel sections of a polar material such as a metal material, preferably a ferrous material, such as a steel material exists / is made, the outlet channel is designed to be particularly robust.
- the invention also relates to a reaction casting machine, with such a mixing head according to at least one of the embodiments described above, whereby a reaction casting machine can be operated particularly effectively per se.
- FIG. 1 is a sectional view of a mixing head having a cleaning piston according to the invention according to a preferred first embodiment, wherein the mixing head is shown cut along the outlet channel and along the mixing chamber,
- Fig. 2 is a sectional view of a mixing head with an inventive
- FIG. 1, 3 is a longitudinal sectional view of a cleaning piston according to the invention according to a third embodiment, in which a preferred construction of the cleaning piston is illustrated particularly well, wherein this cleaning piston is in turn insertable into a mixing head of FIG. 1 or 2,
- Fig. 4 is a perspective view of the cleaning piston of FIG. 3 in a
- FIG. 7 shows a longitudinal sectional view of a cleaning piston according to a further fourth exemplary embodiment, which cleaning piston can in turn be inserted into a mixing head of FIG. 1 or 2, and then grooved on its outer circumferential side, not like the cleaning piston according to FIGS. 3 to 6 on the circumference is but has an unclothed outer shell side,
- Fig. 8 is a perspective view of the cleaning piston of FIG. 7 in a
- FIG. 1 an inventive mixing head 15 according to a preferred, first embodiment can be seen clearly.
- the mixing head 15 is configured / prepared as a mixing head 15 of a reaction casting machine and thus for use / connection in / on this reaction casting machine, which is not shown here for the sake of clarity.
- the mixing head 15 is used in an operation of the reaction casting machine for homogenizing / mixing / mixing at least two different individual components of a reaction plastic.
- the mixing head 15 is used for producing a polyurethane material, namely a polyurethane foam / polyurethane foam.
- the mixing head 15 is further designed as a Umlenkmischkopf.
- the mixing head 15 has an elongated mixing chamber 1 6.
- a control piston 18 is slidably received.
- the individual components are introduced (in a conveying position of the control piston 18) of the reaction plastic / the mixed material to be provided in the mixing chamber 1 6 or (in a blocking position of the control piston 18) prevented from to flow into the mixing chamber 1 6.
- the currently extending mixing chamber 16 is transversely, namely perpendicular / aligned by 90 ° to an outlet channel 5 / extending.
- the mixing chamber 1 6 passes into this outlet channel 5, so it is connected to the outlet channel 5.
- the control piston 18 In a delivery / mixing state of the mixing head 15, the control piston 18 is switched in its delivery position and the outlet channel 5 to the environment of the mixing head 15 is opened. As a result, the mixture flows in the liquid state, after exiting the control piston 18, through the mixing chamber 1 6 and the outlet channel 5 through to an outlet opening 22 of the outlet channel 5. At this outlet opening 22, the mix exits from the mixing head 15 and is supplied in the usual manner to other devices for curing / cooling / molding a finished semi-finished product. In a blocking position of the control piston 18 then again a flow of the individual components of the control piston 18 into the mixing chamber 16 and thereby finally a flow of the mixed material from the mixing chamber 16 in the Outlet channel 5 in avoided. This blocking position of the control piston 18 is implemented approximately when the outlet channel 5 is to be cleaned / free due to adhering to it material remnants / casting remnants.
- the control piston 18 is moved to its blocking position and inserted in the outlet channel 5 cleaning piston 1 is displaced in the axial direction, so that he adhering, excess material remains from the Outlet channel 5 also promoted and prepared the outlet channel 5 for a new mixing / mixing state.
- the cleaning piston 1 Since the also extending straight outlet channel 5 transversely, namely perpendicular to the mixing chamber 1 6, the cleaning piston 1 is transversely, namely aligned substantially perpendicular to the control piston 18 and in its axial direction (along its longitudinal axis) displaceable.
- the outlet channel 5 is, as also shown particularly well in FIG. 1, formed in a first part / section by a wall 19 / inner wall of a hole / bore 24 in a housing 23 of the mixing head 15.
- the outlet channel 5 is formed by an inner peripheral side 20 of a bush 21.
- the socket 21 is in turn secured to the housing 23.
- Both the wall 19 and the bush 21 form a guide region 30 of the outlet channel 5, which comes into contact with the mixture during operation of the reaction casting machine and leads the mixture to the outlet opening 22.
- the sleeve 21 therefore forms, in other words, an outlet pipe and is also referred to as such below.
- the outlet channel 5 is partially made of a non-polar material.
- the bush 21 is (completely) made of this non-polar material in the form of a non-polar plastic material, namely a polyamide material, alternatively also made of a P IC material.
- the outlet channel 5 has a non-polar material, in particular on a radial inner side / the inner circumferential side 20 of the bush 21.
- the sleeve 21 is repellent to material residues from the reaction plastic / mixture to be mixed from the (plastic) individual components.
- the housing 23 of the mixing head 15, in which the first part of the outlet channel 5 is formed in the form of the bore 24, in turn consists in this embodiment of a polar material, namely a steel material.
- this housing 23 and thus the bore 24 of another metal material, or also of a non-polar material in principle.
- the bore 24 and the sleeve 21 thus form, in other words, each sections in which the cleaning piston 1 moves along in the cleaning state.
- the nonpolar material nature of the bush 21 ensures that excess material components / material residues less strongly or not at the outlet channel 5 adhere.
- the bush 21 is, as also clearly visible in FIG. 1, formed with a threaded portion 25 at one axial end. This threaded portion 25 is screwed directly into an internally threaded portion 26 of the housing 23, so that the sleeve 21 is fixedly screwed to the housing 23, coaxial with the bore 24.
- the socket 21 is therefore removably attached to the mixing head 15 / the housing 23 of the mixing head 15.
- a mixing head 15 according to the invention according to FIG. 2, it is also possible to dispense with such a threaded portion 25 on the bush 21 itself.
- the bush 21 is provided with a flange portion 27, which in turn is detachably connected to the housing 23.
- the flange portion 24 is attached to the housing 23 by a plurality of screws, or similar, releasable attachment means.
- the sleeve 21 is always coaxial with the bore 24 and for cleaning aligned supply piston 1. The remaining structure and the operation of this mixing head 15 correspond to the mixing head of the first embodiment.
- the first in the Fign. 3 to 6 cleaning piston 1 shown in detail of a third embodiment described in detail, wherein the cleaning piston 1 used in the first and second embodiments largely as the cleaning piston 1 according to FIGS. 3 to 6 work and are built.
- the cleaning piston 1 has, as shown clearly in FIG. 3, a rod-shaped base section 3.
- the rod-shaped base section 3 can also be clearly seen in FIG. 9 alone.
- the base section 3 has a cylindrical jacket region 2.
- the jacket region 2 has a constant / constant diameter over its length / along a longitudinal axis 31 of the cleaning piston 1.
- the base portion 3 is made entirely of a polar material, namely a metal material in the form of a steel material.
- the base portion 3 is also made of a nonpolar material such as a non-polar plastic material such as PIC or polyamide.
- the base portion 3 is reduced in diameter / tapered.
- the diameter is reduced relative to the jacket region 2 by a radial shoulder 28.
- This reduced in (outer) diameter area of the base portion 3 forms a receiving pin 29.
- the base section 3 in the (outer) diameter is likewise partially tapered / reduced relative to the jacket region 2 and has a connecting groove 13 which completely revolves in the circumferential direction of the cleaning piston 1.
- a drive means to move the cleaning piston 1 in the cleaning state axially back and forth.
- a clearing portion 4 of the cleaning piston 1 is further formed / attached / configured.
- the clearing section 4 is formed materially and geometrically for removing the casting residues adhering to / in the outlet channel / channel 5 of the mixing head 15.
- the evacuation section 4 consists on the one hand of the material integral with the base portion 3 receiving pin 29, on the other hand of a materially separated from the base portion 3 essay 7.
- the article 7 is fixedly mounted on the receiving pin 29.
- the attachment 7 is formed cap-shaped and forms both a sheath 6 with respect to the base portion 3 / the receiving pin 29 and an axial end face 1 1 of the cleaning piston 1 from.
- the evacuation section 4 is pushed onto the base section 3 and forms its outer shell side 8 over a certain length range of the cleaning piston 1.
- the attachment 7 / the sheath 6 is made entirely of a nonpolar material.
- the article 7 / the sheath 6 in this embodiment consists of a non-polar plastic material, namely a polyamide material, alternatively from a P IC material.
- the evacuation section 4 is provided with a plurality of, namely three, annular grooves 9 extending continuously around the circumference of the cleaning piston 1 / of the base section 3.
- the roughnuts 9 are introduced into the outer shell side 8 of the attachment 7.
- the roughnuts 9 are arranged evenly spaced apart in the axial direction.
- several sharp-edged contours 17 are configured.
- the evacuation section 4 scraps off the remains at the outlet channel 5 in the cleaning state.
- the outer shell side 8 is offset relative to the cladding region 2 / increased in its circumference.
- the outer shell side 8 is partially enlarged in diameter relative to the diameter of the jacket region 2.
- a sharp edge / sharp-edged contour 17 for scraping the channel 5 is formed. Also, on the radial outer side of the end face 1 1 such a sharp-edged Contour 17 designed. Under sharp-edged with respect to the contours 17 is here understood that these respective, arranged in the radially outermost region of the outer shell side 8 edges an edge radius of max. 0.5 mm, preferably of about 0.2 mm.
- Fig. 5 is also easy to see how the article 7 in the form of the sheath 6 in this embodiment, positively and non-positively fitted on the receiving pin 29 of the base portion 3 / is attached.
- the base portion 3 has on its outer peripheral side in the region of the receiving pin 29 a knurling / knurled surface structure which is in contact with the inner peripheral side of the attachment 7 / the casing 6. As a result, the connection force between attachment 7 and base portion 3 in the axial direction of the cleaning piston 1 is further increased.
- the cleaning piston 1 is (in the cleaning state) in the outlet channel 5 of the mixing head so far displaced in the axial direction that it always with the evacuation section 4 through the entire guide area 30, i. can be pushed through both the entire wall 19 and through the entire socket 21.
- the cleaning piston 1 is formed on the outer shell side 8 of the attachment 7 with spindle-shaped / spiral-shaped / spiral-shaped grooves 9.
- control piston 18 of the mixing head 15 has e.g. a diameter of about 1 6 mm, the cleaning piston 1 a diameter, e.g. of about 25 mm.
- the pistons (control piston 18 and cleaning piston 1) are each made with special steel materials and subjected to special surface treatments.
- the cleaning piston 1 can thus be made entirely with a non-polar material / material and be equipped in the front region with different geometries.
- the cleaning piston can be made in the front area with a non-polar material and different geometries.
- the non-polar material in the front area of the piston can be made with a wide variety of geometries.
- the outlet pipe (socket 21 / outlet channel 5) can be made entirely with a non-polar material.
- the outlet pipe 5 can be made in particular with a socket 21 with nonpolar material.
- the outlet pipe 5 can also, at least in sections, be made with a polar material (eg steel). It can thus be used combinations of polar and non-polar materials for the piston 1 and the outlet pipe 5.
- the passgates are relatively uncritical here, since the non-polar materials (in particular in the radial direction) are biased.
- the bias of the non-polar material eg PIC, polyamide, etc.
- the bias of the evacuation section 4 in the outlet pipe 5 in the radial direction the outlet pipe 5 can be cleaned without residue.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015119813.4A DE102015119813A1 (en) | 2015-11-17 | 2015-11-17 | Cleaning piston with nonpolar material and mixing head with cleaning piston and outlet channel |
PCT/EP2016/077164 WO2017084945A1 (en) | 2015-11-17 | 2016-11-09 | A cleaning piston which has a non-polar material for a mixing head, and mixing head and discharge channel, each of which contains such a cleaning piston |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3377287A1 true EP3377287A1 (en) | 2018-09-26 |
Family
ID=57281215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16794311.7A Withdrawn EP3377287A1 (en) | 2015-11-17 | 2016-11-09 | A cleaning piston which has a non-polar material for a mixing head, and mixing head and discharge channel, each of which contains such a cleaning piston |
Country Status (7)
Country | Link |
---|---|
US (1) | US20180319042A1 (en) |
EP (1) | EP3377287A1 (en) |
JP (1) | JP2018533512A (en) |
KR (1) | KR20180083345A (en) |
CN (1) | CN108349115A (en) |
DE (1) | DE102015119813A1 (en) |
WO (1) | WO2017084945A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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IT201900004609A1 (en) * | 2019-03-27 | 2020-09-27 | Afros Spa | High pressure mixing device with sensorized self-cleaning delivery duct. |
KR102077613B1 (en) * | 2019-09-23 | 2020-02-17 | 주식회사 디에스아이 | Discharge head of low pressure foaming machine |
WO2021069080A1 (en) * | 2019-10-11 | 2021-04-15 | Kraussmaffei Technologies Gmbh | Lubricated mixing device for reaction plastics |
IT202000001168A1 (en) * | 2020-01-22 | 2021-07-22 | Persico Spa | DEVICE AND METHOD OF MIXING |
KR102350481B1 (en) * | 2020-05-14 | 2022-01-14 | 조일공업주식회사 | Mixing head |
CN115445838B (en) * | 2022-08-10 | 2023-08-18 | 安徽岳塑汽车工业股份有限公司 | Automotive carpet gluing equipment |
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JPS63283914A (en) * | 1987-05-18 | 1988-11-21 | Mazda Motor Corp | Mixing injection machine of reactive injection molding device |
DE8915329U1 (en) * | 1989-03-10 | 1990-04-12 | Krauss-Maffei AG, 8000 München | Device for mixing at least two reactive plastic components |
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DE9315493U1 (en) * | 1993-10-08 | 1993-12-23 | Afros S.p.A., Caronno Pertusella, Varese | High pressure mixing head with adjustable flow limiter |
DE19515039C2 (en) * | 1995-04-24 | 1998-10-01 | Krauss Maffei Ag | Device for mixing at least two chemically reactive plastic components |
ITMI20062315A1 (en) * | 2006-11-30 | 2008-06-01 | Afros Spa | METHOD AND HIGH PRESSURE MIXING EQUIPMENT WITH SCRAPING AND FLUSHING SELF-LUBRICATION DEVICE |
DE102007023239B4 (en) * | 2007-05-18 | 2010-03-11 | Frimo Group Gmbh | Method and device for producing a polyurethane from at least two liquid starting components |
CN103492769B (en) * | 2011-10-31 | 2016-05-18 | 株式会社理研 | Piston ring |
-
2015
- 2015-11-17 DE DE102015119813.4A patent/DE102015119813A1/en not_active Withdrawn
-
2016
- 2016-11-09 CN CN201680065333.XA patent/CN108349115A/en active Pending
- 2016-11-09 JP JP2018522995A patent/JP2018533512A/en active Pending
- 2016-11-09 KR KR1020187015324A patent/KR20180083345A/en unknown
- 2016-11-09 US US15/774,172 patent/US20180319042A1/en not_active Abandoned
- 2016-11-09 WO PCT/EP2016/077164 patent/WO2017084945A1/en active Application Filing
- 2016-11-09 EP EP16794311.7A patent/EP3377287A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US20180319042A1 (en) | 2018-11-08 |
WO2017084945A1 (en) | 2017-05-26 |
CN108349115A (en) | 2018-07-31 |
DE102015119813A1 (en) | 2017-05-18 |
KR20180083345A (en) | 2018-07-20 |
JP2018533512A (en) | 2018-11-15 |
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