WO2010028549A1 - Ensemble à duretés multiples et son procédé de fabrication - Google Patents

Ensemble à duretés multiples et son procédé de fabrication Download PDF

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Publication number
WO2010028549A1
WO2010028549A1 PCT/CN2009/071380 CN2009071380W WO2010028549A1 WO 2010028549 A1 WO2010028549 A1 WO 2010028549A1 CN 2009071380 W CN2009071380 W CN 2009071380W WO 2010028549 A1 WO2010028549 A1 WO 2010028549A1
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WO
WIPO (PCT)
Prior art keywords
plastic
hardness
component
heterogeneous
soft
Prior art date
Application number
PCT/CN2009/071380
Other languages
English (en)
Chinese (zh)
Inventor
周国忠
Original Assignee
清展科技股份有限公司
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Filing date
Publication date
Application filed by 清展科技股份有限公司 filed Critical 清展科技股份有限公司
Publication of WO2010028549A1 publication Critical patent/WO2010028549A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • E06B7/23—Plastic, sponge rubber, or like strips or tubes
    • E06B7/2314—Plastic, sponge rubber, or like strips or tubes characterised by the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure

Definitions

  • the present invention relates to an assembly having multiple softnesses and a method of manufacturing the same, and more particularly to an assembly integrally formed by means of co-injection or double-shot bijection and the like.
  • the existing two-shot injection molding is completed by two injection molding steps, and the first injection molding step is: first introducing a first plastic in a molten state into the first injection unit, and then connecting The first plastic is injected into the cavity of a mold to form a component semi-finished product; and the second injection molding step is: moving the component semi-finished product to the second injection unit by rotating or moving the mold, Then, the second plastic preset in the second injection unit is injected to be joined to the component semi-finished product formed by the first plastic to form a plastic injection molding assembly having a double material.
  • the Taiwan Patent Publication No. 1281884 discloses a seamless double injection molding method and a finished product thereof, which comprises a mold having a male mold and a two female mold, the male mold having a male mold a female mold having a first female mold and a second female mold, the first female mold having a first female mold cavity and a first female mold core, and the second female mold having a second Mother mold hole, it has no connection
  • the double-shot injection molding method comprises the steps of: combining the male mold and the first female mold to tightly bond the male mold core with the first female mold core; and injecting the first plastic into the first female mold a hole for molding the first plastic; replacing the first female mold and the second female mold, and combining the second female mold with the male mold, so that the male mold core and the second female mold core are tightly combined, and Forming acupuncture space of a first female mold core; injecting a second plastic into the acupoint space to form the second plastic, and finally forming an article.
  • the above-described conventional injection molding method
  • the sandwich injection molding system device comprises an injection system 91, a fixed side fixing plate 92 and a movable side fixing plate 93, wherein the fixed side fixing plate 92 is provided with a female die 94, and the female die 94 has a female Cavity 941.
  • a movable mold 95 is disposed on the movable side fixing plate 93, and the male mold 95 has a male mold 951.
  • the master mold 94 is combined with the male mold 95 to form a cavity space 96, and the master mold 94 is provided with a first-class track 97, and the outlets of the flow path 97 are a gate 971, wherein The gate 971 of the fixed side fixing plate 92 is connected to the injection system 91, and the other gate 971 is disposed on the wall surface of the cavity space 96, so that the plastic of the injection system 91 can be The flow path 97 is introduced into the cavity space 96.
  • the injection system 91 has an injection port 911, a first syringe 912 and a second syringe 913.
  • the first syringe 912 is disposed in the second syringe 913.
  • the first syringe 912 is provided with a molten first plastic 9A
  • the second syringe 913 is provided with a molten second plastic 9B for changing the first syringe 912 to abut the injection port 911.
  • the operation of the injection system 91 can be controlled.
  • the first syringe 912 is in contact with the injection port 911, and the first syringe 912 passes the first plastic 9A through the flow channel 97 and within a predetermined time.
  • the gate 971 is injected into the cavity space 96 to fill a portion of the cavity space 96.
  • the first syringe 912 is retracted from the injection port 911, and then the second syringe 913 projects the second plastic 9B into the cavity space 96 via the flow path 97 and the gate 971. And the second plastic 9B pushes the first plastic 9A that was previously injected, so that the first plastic 9A is pushed to the mold.
  • the surface of the pocket space 96, and the second plastic 9B is coated in the first plastic 9A, and after solidification, forms an injection molding assembly, which is an outer first plastic 9A and an inner second plastic 9B.
  • the assembly method, and the co-production method of coating a plastic in another plastic is generally referred to in the industry as a "sandwich co-molding method", and the molding method is compared with the aforementioned two-shot injection molding method. Because there is no process of changing the cavity, it can save a lot of process time; however, although the sandwich co-molding method can save the process time, in application, it is still limited to coating one plastic on another plastic. Inside the use.
  • FIG. 6 it is another embodiment of the co-injection molding technology.
  • the device is substantially the same as the above-mentioned sandwich co-molding device, and the difference is that the gate 971 is connected with two injections.
  • Two kinds of plastics are injected into the cavity space 96 through the gate 971 and the flow path 97, and the components formed after curing are the same as the above-mentioned "sandwiching molding technology", which are both plastic coated and another plastic.
  • the main object of the present invention is to provide a component with multiple softness and a manufacturing method thereof, which mainly uses two plastics with different hardnesses to be sequentially injected into the same cavity, so that the components after injection molding are externally arranged. There are two plastics.
  • Still another main object of the present invention is to provide an assembly having multiple hardnesses and a method of manufacturing the same, wherein the two different hardness plastics are formed by injection molding, and the components are externally joined except for local joints.
  • the joint between the two plastics in the interior is an irregular joint interface, thereby increasing the joint area of the two plastics, and effectively improving the joint strength of the two plastics.
  • Still another main object of the present invention is to provide an assembly having a plurality of soft hardnesses and a method of manufacturing the same, wherein the process of the manufacturing process is completed by injection molding in the same cavity, thereby simplifying the mold.
  • the structure saves the cost of the mold, and also saves the process time due to the process of no cavity conversion. By improving production efficiency and many other benefits, it can be produced at a lower cost and has the benefit of enhancing the competitiveness of the shopping mall.
  • Another main object of the present invention is to provide an assembly having multiple softnesses and a method of manufacturing the same, wherein the manufacturing method is capable of regulating the order and time of injection of the two plastics according to the required function of the assembly.
  • the components can be made to have multiple soft and hard areas, and the soft and hard components can be used according to the requirements, and the original strength of the components can be preserved, which can also increase friction, elastic jam and sealing. A lot of functions.
  • Another main object of the present invention is to provide an assembly having multiple softnesses and a method of manufacturing the same, wherein the method is applicable to an assembly having a 0-ring originally provided, and the resulting assembly is soft.
  • the plastic can be placed on the original part with the 0-ring, and the 0-ring arrangement can be omitted, which simplifies the number of components and saves costs.
  • a component having multiple softness and hardness includes an original portion and at least one heterogeneous portion, the hardness of which is different from each other and integrated with each other.
  • the original portion and the heterogeneous portion each have at least one exposed surface, and the joint between the original portion and the heterogeneous portion has at least one irregularly shaped joint interface.
  • a component having multiple softness and a manufacturing method thereof comprising the steps of: a. providing a rigid plastic and a soft plastic; b. melting the Two plastics having different hardnesses; c. ejecting the two plastics in a molten state into a predetermined cavity; d. After the curing, the two plastics having different hardnesses form a component with multiple hardnesses. And an inner surface of the component and the surface of the joint between the two plastics form an irregular joint interface.
  • the beneficial effects of the present invention are as follows: Since the above-mentioned manufacturing method can adjust the order and time of the two plastic injections according to the actual needs of the components, the formed components can be shaped with a plurality of regions of different hardness and hardness, In addition to the multiple functions of friction, elastic cassettes and seals of the components, and because the processes of the above-mentioned manufacturing methods are all injection-molded in the same cavity, the mold structure can be simplified, and the process without the cavity conversion is performed.
  • the utility model can save the process time and improve the production efficiency and the like, so the invention has the effects of reducing the component cost and improving the competitiveness of the product shopping mall.
  • Figure 1 is an exploded view of a prior art multi-piece modular assembly.
  • Figure 2 is an exploded view of the prior art multi-piece modular assembly.
  • Figure 3 is an exploded view of the prior art multi-piece modular assembly.
  • FIG. 4 is a cross-sectional view of a conventional co-injection molding technique.
  • Figure 5 is a cross-sectional view of the prior art common injection molding technique.
  • Figure 6 is a cross-sectional view of another conventional co-injection molding technique.
  • Figure 7 is a cross-sectional view showing a method of manufacturing a module having multiple softnesses according to a first embodiment of the present invention.
  • Figure 8 is a cross-sectional view showing a method of manufacturing a module having multiple hardnesses according to a first embodiment of the present invention.
  • Fig. 10A is a cross-sectional view showing the assembly of the multiple softness of the second embodiment of the present invention.
  • Figure 10B is a cross-sectional view of the second embodiment of the present invention having multiple softness.
  • Figure 11 is a cross-sectional view showing a basin having multiple softnesses according to a third embodiment of the present invention.
  • Figure 12A is a side elevational view of a frame guide block having multiple softnesses in accordance with a fourth embodiment of the present invention.
  • Fig. 12B is a view showing a state of use of a frame guide block having multiple softnesses according to a fourth embodiment of the present invention.
  • Figure 13A is a side elevational view of an upper choke block having multiple softnesses in accordance with a fifth embodiment of the present invention.
  • Fig. 13B is a view showing a state of use of the upper air block having multiple softnesses according to the fifth embodiment of the present invention.
  • Fig. 14A is a side view of a lower choke drain block having multiple softnesses according to a sixth embodiment of the present invention.
  • Fig. 14B is a view showing a state of use of a lower choke drain block having multiple softnesses according to a sixth embodiment of the present invention.
  • Figure 15 is a cross-sectional view showing a method of manufacturing a module having multiple softnesses according to a seventh embodiment of the present invention.
  • Figure 16 is a cross-sectional view showing a method of manufacturing a module having multiple hardnesses according to a seventh embodiment of the present invention.
  • Figure 17B is a cross-sectional view showing an assembly of multiple hardnesses according to an eighth embodiment of the present invention.
  • Figure 18 is a cross-sectional view showing an O-ring assembly having multiple softnesses according to a ninth embodiment of the present invention. ⁇ detailed description ⁇
  • a first embodiment of a method for manufacturing a module having multiple softnesses the injection molding system required for the present invention comprises an injection system 11, a fixed side fixing plate 12 and a movable side fixing plate. 13.
  • a first mold body 14 is disposed on the fixed side fixing plate 12, and the first mold body 14 has a first mold cavity 141.
  • the movable side fixing plate 13 is provided with a second mold body 15 , and the second mold body 15 has a second mold cavity 151 .
  • the first mold cavity 141 and the second mold cavity 151 form a common mold hole 151 .
  • first mold body 14 is provided with a first-class stalk 17, and the outlets of the two ends of the flow passage 17 are a gate 171, wherein the gate 171 of the fixed-side fixing plate 12 is adjacent to the injection system.
  • the 11 phases are connected in succession, and the other gate 171 is in communication with the cavity space 16, so that plastic in the injection system 11 can be introduced into the cavity space 16 via the flow channel 17.
  • the injection system 11 has an injection port 111, a first syringe 112 and a second syringe 113.
  • the first syringe 112 is movable within the second syringe 113.
  • the first syringe 112 is pre-loaded with a first plastic A in a molten state
  • the second syringe 113 is also pre-loaded with a second plastic B in a molten state, and is abutted by changing the first syringe 112.
  • the state of the injection port 111 controls the operation of the injection system 11.
  • the first step of the method for manufacturing a module having multiple softnesses according to the first embodiment of the present invention is: providing a rigid plastic A and a soft plastic B, which are provided in this step.
  • the plastics are the first plastic A and the second plastic B, which are interchangeably selected from the group consisting of hard plastic A and soft plastic B, respectively.
  • the second step of the method for manufacturing a module having multiple hardnesses according to the first embodiment of the present invention is: melting and introducing the two hard different plastics into at least the injection system 11.
  • the first syringe 112 of the injection system 11 contains a molten first plastic A
  • the second syringe 113 contains a molten second plastic 8.
  • the third step of the method for manufacturing a module having multiple softnesses according to the first embodiment of the present invention is: sequentially ejecting the two hard different molten plastics to a predetermined mode. In the hole.
  • the first syringe 112 is filled with a molten first plastic A, and is moved. Moving the first syringe 112 to the injection port 111, the first syringe 112 injects the first plastic A into the cavity space 16 via the flow channel 17 and the gate 171 for a predetermined time. Stop after the local space.
  • the first syringe 112 is retracted from the injection port 111, and then the second syringe 113 passes the second plastic B into the cavity via the flow path 17 and the gate 171. Space 16.
  • the second plastic B which is injected later pushes the previously injected first plastic A to both sides, and passes through the first plastic A to fill the space of the cavity space 16 except for the first plastic A.
  • FIG. 9 it is another injection molding system of the first embodiment, which is provided with two injection systems 1 and 11" on the gate 171, wherein the injection system 1 is equipped with a molten first One plastic A, and the other injection system 11" is equipped with a molten second plastic B, and then in the process of injection, the two molten plastics are sequentially injected into the cavity space 16, and then the injected plastic is The plastic in front will be pushed and passed until the two plastics fill the entire cavity space 16.
  • the first plastic A forms a component on the component.
  • a portion a and the second plastic B is formed into a heterogeneous portion b, and the heterogeneous portion b includes a portion located at a core portion of the original portion a, and a traversing the original portion a
  • the first embodiment of the present invention can sequentially inject and cure two plastics having different hardnesses in a cavity space 16 to form an integrally formed component having two materials, and In the assembly, the original portion a and the heterogeneous portion b have an exposed surface, and the heterogeneous portion b is partially covered in the original portion a, thereby increasing the stability of the joint. And its strength.
  • the first plastic A that is injected first is formed into an original portion a, and the second plastic B is formed.
  • a heterogeneous portion b is formed.
  • the present invention is not limited to this structural order.
  • the first plastic A that is injected first forms a heterogeneous portion b
  • the second plastic B forms a primary material. Part a. That is, the above method does not limit the hardness of the plastic that is injected first to be larger or smaller than the plastic that is injected later. Therefore, the hardness of the first plastic A may be greater or smaller than the second plastic B.
  • the plastic having a higher hardness is high density polyethylene (PE:), polypropylene (PP), ABS or nylon (NYLON).
  • PE high density polyethylene
  • PP polypropylene
  • ABS nylon
  • NYLON nylon
  • One of the less rigid plastics is low density polyethylene (PE:), thermoplastic rubber CTPR:), polyvinyl chloride (PVC:), thermoplastic polyurethane (TPU) and the like.
  • a second flexible embodiment of the present invention is disclosed. It is similar to the multiple softness component of the first embodiment of the present invention, but differs in that: by changing the preset injection time and the position of the injection point or the number of injection points, so that the The regular joint interface c further forms a wider interface, and the wider joint interface c has a hardness between the first plastic A and the second plastic B, and the hardness thereof may be multiple.
  • the multiple softness component and the manufacturing method of the first or second embodiment of the present invention as described above can be used to manufacture a component having multiple softness requirements, such as a container, and can be a basin, a basket or a tray. Body and so on.
  • FIG. 11 it discloses a basin having multiple softnesses according to a third embodiment of the present invention.
  • An injection molding pot 2 is produced by the manufacturing method of the first or second embodiment, wherein most of the bowl 2 is formed by the original portion a, and the bottom portion 21 of the bowl 2 is placed flat.
  • the portion to be contacted is formed by the heterogeneous portion b, wherein the detailed structural features of the original portion a and the heterogeneous portion b are similar to those of the first or second embodiment, and thus will not be described in detail herein or Description.
  • the heterogeneous portion b is made of a softer plastic, the friction between the bottom portion 21 and the placement plane can be increased to prevent the basin 2 from being placed on the placement plane.
  • the heterogeneous portion b is made of a relatively rigid plastic, which increases the wear between the bottom portion 21 of the basin 2 and the placement plane to meet different usage environments. That is, the present invention does not limit a certain part of the assembly, and is made of a hard or soft plastic, but determines the hardness of the plastic to be used according to the characteristics required for the part of the assembly.
  • the above-described first or second embodiment of the present invention has multiple softness components and a manufacturing method thereof, and can also be applied to door and window components, such as a frame guide block, an upper air block, and a lower air block.
  • the main body of the door and window parts usually forms a prosthetic part a using a relatively rigid plastic, which can make the mounted embedded or screwed state more stable.
  • the soft portion is used to form the heterogeneous portion b to increase the airtightness of the door and window member and to reduce the noise generated by the friction.
  • the detailed structural features of the original portion a and the heterogeneous portion b are similar to those of the first or second embodiment, and therefore will not be described or illustrated in detail herein.
  • FIG. 12A discloses a frame guide with multiple softness and hardness according to a fourth embodiment of the present invention.
  • the main body of the frame guide block 3 is an embedding portion 31.
  • the outer side of the embedding portion 31 is provided with a plurality of reinforcing ribs 32.
  • the inner side of the embedding portion 31 is provided with a sliding slot 33.
  • a plurality of baffles 34 are provided, wherein the embedding portion 31 is an original portion a made of hard plastic, and the plurality of baffles 34 are heterogeneous portions b made of soft plastic;
  • the rib 32 is adapted to adjust the order of ejection of the two plastics according to actual needs, so that the reinforcing rib 32 can form one of the original portion a, the heterogeneous portion b or the joint interface c.
  • a state of use of a frame guide having multiple softnesses according to a fourth embodiment of the present invention is disclosed.
  • the frame guide block 3 is inserted into a movable window frame C, and the sliding slot 33 of the frame guide block 3 is placed on a fixed window rail D.
  • the movable window frame C can be along the fixed window frame D. slide. Since the embedding portion 31 is the original portion a made of hard plastic, the frame guide block 3 can be firmly embedded in the movable window frame C.
  • the plurality of baffles 34 are heterogeneous portions b composed of soft plastic, the baffle 34 is more preferably used when the baffle 34 is pressed by the fixed window rail D.
  • the reinforcing ribs 32 are also smoothed by touching the inner wall surface of the movable window frame C. The bending is deformed, and the elastic buckle is inserted into the movable window frame C, so that the frame guiding block 3 can be more tightly packed on the movable window frame C.
  • FIG. 13A there is shown a side view of the upper air block having multiple softnesses according to the fifth embodiment of the present invention.
  • the main body of the upper air block 4 is a fixing plate 41.
  • the fixing plate 41 is provided with a plurality of fins 43.
  • the fixing plate 41 is the original portion a, and the fins 43 are The heterogeneous portion b is described, and the intersection of the fixing plate 41 and the cymbal 43 is an irregular joint interface c.
  • FIG. 13B there is shown a state of use of the upper air block having multiple softnesses according to the fifth embodiment of the present invention.
  • the air blocking block 4 is fixed on a fixed window rail D, and the movable window frame D is further combined with a movable window frame C, and the movable window frame C can slide along the fixed window rail D.
  • the fixing plate 41 is an original portion a made of a hard plastic
  • the air blocking block 4 can be stably installed in the fixed window rail D, and since the plurality of fins 43 are soft
  • the heterogeneous portion b composed of plastic is bent and deformed by the pressing b of the movable window frame C, so that the elastic deformation of the choke block 4 can prevent the generation of the gap between the two, thereby achieving better Wind blocking effect.
  • FIG. 14A it discloses a lower resistance wind drainage with multiple softnesses according to a sixth embodiment of the present invention.
  • the main body of the lower choke drain block 5 is a fixing plate 51.
  • the fixing plate 51 is provided with a plurality of stepped fins 53.
  • the fixing plate 51 is an original portion a, and the stepped fins are 53 is a heterogeneous portion b, and the intersection of the fixing plate 51 and the stepped piece 53 is an irregular joint interface c.
  • a state of use of a lower choke drain block having multiple softnesses according to a sixth embodiment of the present invention.
  • the lower choke drain block 5 is fastened to a fixed window rail D.
  • the fixed window rail D is further combined with two movable window frames C, and the movable window frame 2 C can slide along the fixed window rail D.
  • the fixing plate 51 is the original portion a composed of a hard plastic
  • the choke drain block 5 is stably fixed in the fixed window rail D.
  • the plurality of stepped fins 53 are heterogeneous portions b made of soft plastic, they are pressed by the two movable window frames C, forcing the fins 53 to be bent and deformed to block the entry of air. And the effect of gain blocking wind.
  • the injection molding system required therein comprises a first injection system 60, a second injection system 61, a fixed side fixing plate 62 and a movable side fixing plate 63.
  • the first injection system 60 contains a molten first plastic A
  • the second injection system 61 contains a molten second plastic B.
  • the fixed side fixing plate 62 is provided with a first die 64
  • the first die has a first cavity 641.
  • the movable side fixing plate 63 is provided with a second die 65.
  • the second die 65 has a second cavity 651.
  • the second cavity 651 and the first cavity 641 form a cavity. Space 66.
  • a first flow path 67 and a second flow path 68 are disposed between the fixed side fixing plate 62 and the first die 64.
  • the first flow channel 67 is provided with at least one first gate 671, the first gate 671 is located at the intersection of the first flow channel 67 and the cavity space 66, and the first flow channel 67 is Introducing the plastic of the first injection system 60 into the cavity space 66;
  • the second flow path 68 is provided with at least one second gate 681, and the second gate 681 is located at the second
  • the flow passage 68 interfaces with the cavity space 66, and the second flow passage 68 introduces plastic of the second injection system 61 into the cavity space 66.
  • the first step of the method for manufacturing a module having multiple softnesses according to the seventh embodiment of the present invention is as follows: First, a rigid plastic A and a soft plastic B are provided. In this step, the plastics provided are the first plastic A and the second plastic B, which are respectively interchangeably selected from the hard plastic A and the soft plastic.
  • the second step is: separately melting the two hard different plastics into the two injection system.
  • the first injection system 60 of the injection system contains a molten first plastic A
  • the second injection system 61 contains a molten second plastic B.
  • the third step of the method for manufacturing a module having multiple softnesses according to the seventh embodiment of the present invention is: simultaneously ejecting the two plastics into a predetermined cavity.
  • the first injection system 60 injects the first plastic A into the cavity space 66 via the first flow path 67 for a predetermined time.
  • the first syringe 60 injects the first plastic A into the cavity space 66 via the first flow path 67 and the first gate 671.
  • the second injection system 61 injects the second plastic B into the cavity space 66 via the second flow path 68.
  • the first plastic A and the second plastic B then meet in the cavity space 66.
  • the term "simultaneously" means that the time difference between the first injection system 60 and the second injection system 61 is within a few seconds, and the time of the first injection system 60 and the second injection system 61 is also due to the respective flow paths and The type and number of shots and the distribution that each plastic wants to achieve will vary.
  • a fourth step of the method for manufacturing a module having multiple softnesses according to a seventh embodiment of the present invention is: curing the hard plastic A and the soft plastic B in the cavity to form an assembly.
  • the first plastic A is cured to form a protoplast a
  • the second plastic B is formed as a heterogeneous portion b
  • the heterogeneous portion b is a part of the assembly.
  • the original portion a becomes the other portion of the assembly, and there is an irregular joint interface c between the original portion a and the heterogeneous portion.
  • the first plastic A is solidified to form an original portion a, and the second plastic B is formed into a different shape.
  • the present invention is not limited to this structural order, and another case is: the first plastic A is solidified to form a heterogeneous portion b, and the second plastic B is formed as a protoplast portion. a. That is, the above method does not limit the hardness of the plastic that is injected first to be larger or smaller than the plastic that is injected later. Therefore, the hardness of the first plastic A may be greater or smaller than the second plastic B.
  • the plastic having a higher hardness is preferably one of high density polyethylene (PE:), ABS, polypropylene (PP) or nylon (NYLON), and the plastic having a smaller hardness is preferably. It is one of low density polyethylene (PE:), polyvinyl chloride (PVC), thermoplastic rubber (TPR:), thermoplastic polyurethane (TPU), and the like.
  • PE high density polyethylene
  • PP polypropylene
  • nylon NYLON
  • TPU thermoplastic polyurethane
  • the multiple softness component of the seventh embodiment of the present invention differs in that: by changing the preset injection time and the position of the injection point or the number of injection points, so that the The regular joint interface c further forms a wider interface, and the wider joint interface c has a hardness between the first plastic A and the second plastic B, and the hardness thereof may be multiple hardnesses.
  • the multiple softness component and manufacturing method of the seventh or eighth embodiment of the present invention as described above can be used to manufacture a component having multiple softness requirements, such as a container selected from a basin, a basket or a tray. body.
  • the above-mentioned seventh or eighth embodiment of the present invention has multiple softness components and a manufacturing method thereof, and can also be applied to door and window parts, such as a frame guide block, an upper air block, and a lower air block.
  • the main body of the door and window parts usually forms a prosthetic part a using a relatively rigid plastic, which can make the mounted embedded or screwed state more stable.
  • the soft portion is used to form the heterogeneous portion b to increase the airtightness of the door and window member and to reduce the noise generated by the friction.
  • FIG. 18 discloses another application range of the present invention is a plastic component having 0-ring performance, which can be implemented by the first, second, seventh or eighth embodiment of the present invention described above. It is made of a component having multiple hardnesses and a manufacturing method. The majority of the assembly 7 is formed by the original portion a, and the 0-ring portion 71 is formed by the heterogeneous portion b, wherein the detailed structure features of the original portion a and the heterogeneous portion b Similar to the first, second, seventh or eighth embodiments, it will not be described or illustrated in detail herein.
  • the heterogeneous portion b is made of a softer plastic, so that the 0-ring portion 71 can be pressed when the assembly 7 is assembled with other corresponding components. It is slightly deformed to create a seal with the effect of preventing fluid leakage. That is to say, the 0-ring portion 71 of the assembly 7 can replace an existing 0-ring, thereby simplifying the construction of the 0-ring assembly 7 and cost-effective performance.

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  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L’invention concerne un procédé de fabrication d’un ensemble à duretés multiples, qui comprend les étapes suivantes : a. un plastique dur (A) et un plastique souple (B) sont mis à disposition; b. les plastiques de duretés différentes sont fondus; c. les plastiques fondus sont injectés dans la cavité pré-établie (66); d. après la solidification des deux plastiques de duretés différentes, ils forment l’ensemble à duretés multiples, et l’intérieur et la surface de l’ensemble ont une interface irrégulière (C) à la jointure entre les deux plastiques.
PCT/CN2009/071380 2008-09-09 2009-04-21 Ensemble à duretés multiples et son procédé de fabrication WO2010028549A1 (fr)

Applications Claiming Priority (2)

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CN200810149441.2 2008-09-09
CN200810149441A CN101672153A (zh) 2008-09-09 2008-09-09 具多重软硬度的组件及其制造方法

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WO2010028549A1 true WO2010028549A1 (fr) 2010-03-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9635928B2 (en) 2012-11-05 2017-05-02 The Procter & Gamble Company Toothbrush comprising elastomeric cleaning elements over-molded with a harder plastic and method for producing the same
CN108715012A (zh) * 2018-08-17 2018-10-30 合茂电子元件（吴江）有限公司 一种长条产品加工用模仁
TWI715651B (zh) * 2015-10-29 2021-01-11 日商凸版印刷股份有限公司 盒子及盒子的製造方法
US11840000B2 (en) 2017-03-31 2023-12-12 Csp Technologies, Inc. Methods of overmolding softer material with harder material and moisture tight container assemblies made by the methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2082141U (zh) * 1991-02-06 1991-08-07 赵福安 一种容器塞子
JPH0976291A (ja) * 1995-09-20 1997-03-25 Japan Steel Works Ltd:The 異種材料からなる成形品の成形方法および成形用金型
CN2525207Y (zh) * 2001-12-04 2002-12-11 清展塑胶股份有限公司 组设导块的门窗框架
CN2792969Y (zh) * 2005-05-16 2006-07-05 蒋一新 容器软胶包胶装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2082141U (zh) * 1991-02-06 1991-08-07 赵福安 一种容器塞子
JPH0976291A (ja) * 1995-09-20 1997-03-25 Japan Steel Works Ltd:The 異種材料からなる成形品の成形方法および成形用金型
CN2525207Y (zh) * 2001-12-04 2002-12-11 清展塑胶股份有限公司 组设导块的门窗框架
CN2792969Y (zh) * 2005-05-16 2006-07-05 蒋一新 容器软胶包胶装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9635928B2 (en) 2012-11-05 2017-05-02 The Procter & Gamble Company Toothbrush comprising elastomeric cleaning elements over-molded with a harder plastic and method for producing the same
TWI715651B (zh) * 2015-10-29 2021-01-11 日商凸版印刷股份有限公司 盒子及盒子的製造方法
US11840000B2 (en) 2017-03-31 2023-12-12 Csp Technologies, Inc. Methods of overmolding softer material with harder material and moisture tight container assemblies made by the methods
CN108715012A (zh) * 2018-08-17 2018-10-30 合茂电子元件（吴江）有限公司 一种长条产品加工用模仁
CN108715012B (zh) * 2018-08-17 2023-09-12 合茂电子元件（吴江）有限公司 一种长条产品加工用模仁

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