CN110142934B - Three-way pipe and injection mold and method thereof - Google Patents
Three-way pipe and injection mold and method thereof Download PDFInfo
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- CN110142934B CN110142934B CN201910288184.9A CN201910288184A CN110142934B CN 110142934 B CN110142934 B CN 110142934B CN 201910288184 A CN201910288184 A CN 201910288184A CN 110142934 B CN110142934 B CN 110142934B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/24—Pipe joints or couplings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/24—Pipe joints or couplings
- B29L2031/246—T-joints
Abstract
The invention relates to the technical field of dies. A three-way pipe injection mold comprises a top plate, an upper mold base, a lower mold base, an upper mold and a lower mold; the middle part of the top plate is provided with a glue injection port; the upper die base is arranged below the top plate; the middle part of the upper die base is provided with a glue injection pipe; the glue injection pipe is communicated with the top of the upper die, and the bottom surface of the upper die base is provided with an upper die groove; the upper die is arranged in the upper die groove; the bottom surface of the upper die is provided with a first three-way core groove and a second three-way core groove; the lower die base is matched with the upper die base; the lower die base is provided with a first core pulling assembly groove, a second core pulling assembly groove, a third core pulling assembly groove and a lower die groove, and is respectively provided with a first core pulling assembly, a second core pulling assembly and a third core pulling assembly; the lower die groove is arranged at the joint of the three core-pulling component grooves. The invention has the beneficial effects that: the main pipeline and the branch pipeline in the three pipelines injected by the mold are on different planes, so that the occupied space is saved, the connection strength is further increased, and the service life is prolonged.
Description
Technical Field
The invention relates to the field of injection molds, in particular to a three-way pipe injection mold.
Background
The three-way pipe is used at a branch pipe of the main pipeline, and is provided with three ports, namely an inlet and two outlets; or a pipe fitting with two inlets and one outlet, which has T shape and Y shape, has equal-diameter pipe openings and also has different-diameter pipe openings and is used for the convergence of three identical or different pipelines. The main function of the tee is to change the direction of the fluid.
Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the material melted by heating is injected into a die cavity from high pressure, and a formed product is obtained after cooling and solidification. The injection mold is an important technological device for producing various industrial products, and with the rapid development of the plastic industry and the popularization and application of plastic products in the industrial departments of aviation, aerospace, electronics, machinery, ships, automobiles and the like, the requirements of the products on the mold are higher and higher, and the traditional mold design method cannot meet the current requirements. The injection mold consists of a movable mold and a fixed mold, wherein the movable mold is arranged on a movable template of the injection molding machine, and the fixed mold is arranged on a fixed template of the injection molding machine. And when the mold is opened, the movable mold is separated from the fixed mold so as to take out the plastic product.
The prior art is improved, and the invention discloses an inclined three-way injection mold as disclosed in the Chinese invention patent with the publication number of CN105128280A (published as 2015.12.09), which comprises a fixed mold plate, a movable mold plate, a first mold core and a second mold core, wherein the fixed mold plate is arranged on the movable mold plate, guide sliding sleeves are arranged on the outer sides of the first mold core and the second mold core, the first mold core and the second mold core are respectively connected with the guide sliding sleeves in a sliding manner, pressing strips are arranged at the two ends of the second mold core, a first wedge block and a second wedge block are arranged at the two ends of the fixed mold plate, the first wedge block is fixedly connected with the fixed mold plate, a sprue bush is arranged in the middle of the fixed mold plate, the sprue bush is communicated with the first mold core, an inclined guide pillar and an inclined guide pillar are arranged at the two sides of the sprue bush, the first inclined guide pillar and the second inclined guide pillar are respectively connected with the fixed mold, the installation is convenient, the core interval can be adjusted, and the machining precision is high. However, the three joints of the tee joint which is injection molded by the three-way injection mold and most of the existing three-way pipe injection molds are on the same plane, if the three joints meet the condition that the space is limited, the tee joint is inconvenient to use or even cannot be used, and the tee joint with the main pipeline and the branch pipeline which are not on the same plane can further increase the structural connection strength and prolong the service life.
Disclosure of Invention
The purpose of the invention is: aiming at the defects in the prior art, the main pipeline and the branch pipelines in the three pipelines which are injected by the mold are arranged on different planes, so that not only is the occupied space saved, but also the connection strength is further increased, and meanwhile, the service life is prolonged.
For the purpose of the invention, the following technical scheme is adopted for realizing the purpose:
a three-way pipe injection mold comprises a top plate, an upper mold base, a lower mold base, an upper mold, a lower mold, a supporting plate, a supporting vertical plate, an ejector plate and a bottom plate; the middle part of the top plate is provided with a glue injection port; a top plate matching block is arranged on the bottom surface of the left side of the top plate; the upper die base is arranged below the top plate; the middle part of the upper die base is provided with a glue injection pipe communicated with the glue injection port; the glue injection pipe is communicated with the top of the upper die, and inclined guide post holes are respectively formed in the front side and the rear side of the upper die base, which are positioned on the glue injection pipe; an inverted trapezoidal through hole is formed in the left side of the upper die base; a mould pressing matching block is arranged in the inverted trapezoidal through hole; the mould pressing matching block is matched with the top plate matching block; the bottom surface of the upper die base is provided with an upper die groove; the upper die is arranged in the upper die groove; the bottom surface of the upper die is provided with a first three-way core groove and a second three-way core groove; the first three-way core groove and the second three-way core groove are combined to form a V shape; the lower die base is matched with the upper die base; the lower die base is provided with a first drawing core component groove, a second drawing core component groove, a third drawing core component groove and a lower die groove; the first core pulling assembly groove, the second core pulling assembly groove and the third core pulling assembly groove are combined to form a Y shape, a first core pulling assembly, a second core pulling assembly and a third core pulling assembly are respectively arranged on the first core pulling assembly groove, the second core pulling assembly groove and the third core pulling assembly groove, and the three core pulling assemblies are used for three-way core pulling; the lower die groove is arranged at the joint of the three drawing core assembly grooves, the lower die groove is communicated with the three drawing core assembly grooves, and a plurality of glue outlet channels are arranged on the lower die groove; the lower die is arranged in the lower die groove, the lower die is provided with a V-shaped three-way core groove matched with the upper die, and the middle part of the left side of the lower die is provided with a die inclined groove; a trapezoidal matching through hole communicated with the die inclined groove is formed in the lower die base and is positioned below the die inclined groove; a mould jacking matching block is arranged in the trapezoidal matching through hole, and a mould jacking supporting rod is connected to the mould jacking matching block in a matching manner; the supporting plate is arranged below the lower die holder; the two supporting vertical plates are respectively arranged at the front side and the rear side below the supporting plate; the ejection plates are arranged between the two supporting vertical plates, a plurality of ejection rods are arranged on the ejection plates, the ejection plates eject finished workpieces through the lifting driving assembly, the ejection rods penetrate through the die to sequentially eject the matching blocks and the lower die, and the ejection rods are flush with the bottom surfaces of the two three-way core grooves in the lower die; the bottom plate is arranged below the two supporting vertical plates; a rubber outlet pipe is arranged in the center of the bottom plate. The main pipeline and the branch pipeline in the three pipelines injected by the mold are on different planes, so that the occupied space is saved, the connection strength is further increased, and the service life is prolonged.
Preferably, the first core pulling assembly and the second core pulling assembly are symmetrically arranged and have the same structure; the first core-pulling assembly comprises a core-pulling bottom plate, two side sliding plates, a core-pulling sliding block, an inclined guide post and a core-pulling model; the core pulling bottom plate is arranged at the bottom of the first core pulling component groove, the two side sliding plates are arranged at two sides of the first core pulling component groove, the core pulling slide block is arranged between the two side sliding plates, and the core pulling slide block slides between the two side sliding plates; an inclined guide pillar through hole is formed in the core pulling slide block, an inclined guide pillar sliding through hole is formed in the core pulling bottom plate, an inclined guide pillar sliding groove is formed in the bottom of the first core pulling assembly groove, the lower portion of the inclined guide pillar sequentially penetrates through the inclined guide pillar through hole and the inclined guide pillar sliding through hole to be obliquely arranged in the inclined guide pillar sliding groove, and the upper end portion of the inclined guide pillar is arranged in the inclined guide pillar through hole; the fixed end of the core pulling model is arranged on the core pulling slide block, and the core pulling model is arranged in the first three-way core groove to move; the core pulling module comprises a core pulling module body, and is characterized in that a first matching surface and a second matching surface are arranged on the matching end of the core pulling module body, a matching groove is formed in the first matching surface, a matching convex block matched with the matching groove is arranged on the first matching surface of the core pulling module body of the second core pulling module body, and the first core pulling module body and the second core pulling module body are combined to form a circle and matched with a third core pulling module body. The Y-shaped tee joint is formed by symmetrically arranging the first core-pulling assembly and the second core-pulling assembly, and the core is pulled out from the cavity of the injection mold through the inclined guide pillar.
Preferably, the third core-pulling assembly groove is inclined, and the third core-pulling assembly comprises a core-pulling inclined bottom plate, two inclined side sliding plates, an inclined core-pulling sliding block, a core-pulling cylinder and a core-pulling matching model; the core-pulling inclined bottom plate is arranged on the inclined bottom surface of the third core-pulling assembly groove, and the two inclined side sliding plates are arranged on the front side and the rear side of the third core-pulling assembly groove; the inclined core-pulling sliding block is arranged between the two inclined side sliding plates; the core pulling cylinder is arranged on the left surface of the lower die holder through a cylinder fixing plate; the left part of the inclined core-pulling sliding block is fixedly connected with the moving end of the core-pulling cylinder; the right part of slider is loosed core in slope is connected with down trapezoidal cooperation piece, down trapezoidal cooperation piece right part middle end be provided with slope cooperation groove, the cooperation model slope of loosing core set up the upper portion in slope cooperation groove, the mould top tight cooperation piece link up in the below of the cooperation model of loosing core, the cooperation model of loosing core cooperatees with first subassembly and the second of loosing core. The main pipeline and the branch pipelines are arranged on different planes through the inclined design, and the structural strength is improved.
Preferably, the mould abutting fitting block is provided with a downward concave arc-shaped groove; the mould compress tightly and be provided with the arc cooperation groove of upwards concave on the cooperation piece, arc groove and arc cooperation groove phase-match. The tight cooperation piece in mould top matches the piece and matches the piece with the mould pressing fit and cooperate and form circular injection molding hole, improves the efficiency of moulding plastics.
Preferably, one end of the core-pulling sliding block is provided with a sliding block inclined plane, and the upper die holder is provided with a limiting block which is matched with the sliding block inclined plane and prevents the core-pulling sliding block from moving; the limiting block is arranged in the first core drawing assembly groove when matched with the slide block inclined plane. The movement of the core-pulling sliding block is more convenient through the limiting block, and the core is convenient to pull to achieve a better injection molding model.
Preferably, the die pressing matching block is inclined, and a pressing matching through hole is formed in the middle of the die pressing matching block; the lower part of the top plate matching block is provided with a top plate matching opening; the top plate matching block is matched and connected with the pressing matching through hole of the die pressing matching block through a top plate matching opening.
Preferably, the bottom of the inverted trapezoidal through hole is connected with the left side of the upper die groove; the top of the trapezoidal matching through hole is connected with the left side of the lower die groove. Through trapezoidal through-hole design and mutually supporting, make the trunk line and the lateral conduit of tee bend in different planes, not only save occupation space still further increase joint strength.
Preferably, a lock is arranged between the upper die base and the lower die base. The stability of the upper die base and the lower die base during processing is further improved, and the influence of die opening on products is reduced.
Preferably, the right side of the lower die base is provided with a die opening handle. Is convenient for manual use.
An injection molding method of a three-way pipe sequentially comprises the following steps:
injecting glue solution: injecting injection molding glue from a glue injection port of the top plate, wherein the injection molding glue flows into a glue injection pipe on the upper die base from the glue injection port and flows out from a glue outlet pipe on the base;
(II) injection molding: the injection molding glue flows into the space between the upper die and the lower die through the top of the upper die and flows into the space between the die jacking support rod and the die pressing matching block, so that the main pipeline and the branch pipelines are in different planes, the injection molding glue forms a three-way shape through the three core pulling assemblies and the die cavity, and the three-way pipe is immobilized through cooling;
(III) opening the mould and loosing the core: the upper die base is opened, and the branch pipelines of the tee joint are subjected to core pulling through the first core pulling assembly and the second core pulling assembly at the same time; completing core pulling of the main pipeline of the tee joint through a third core pulling assembly;
(IV) discharging finished products: the lifting driving component drives the ejector rod on the ejector plate to eject a finished product out of the three-way pipe which is formed by injection molding on the lower die.
The three-way pipe is obtained by the injection molding method.
Compared with the prior art, the invention has the beneficial effects that: set up trapezoidal through-hole and mould top bracing piece and mould through on upper die base and the die holder and compress tightly the slope of cooperation piece and set up in lower die base and upper die base to form trunk line and lateral conduit not in the coplanar, not only save occupation space still further increase joint strength, still increase life simultaneously, cooperate being convenient for loosing core of lateral conduit and further increase through the tool to lock and add man-hour and the stability when the die sinking through upper die base and oblique guide pillar.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the upper die base.
FIG. 3 is a schematic structural view of the lower die holder.
Fig. 4 is a schematic structural view of the upper mold.
Fig. 5 is a schematic structural view of the lower mold.
Fig. 6 is a schematic structural view of the second core back assembly.
Fig. 7 is a schematic structural view of a third loose core assembly.
The labels in the figures are: the mold comprises a top plate 1, a glue injection hole 101, a top plate matching block 102, a top plate matching opening 1021, an upper mold base 2, a glue injection pipe 21, an inclined guide post hole 22, an inverted trapezoidal through hole 23, a mold press matching block 24, an arc matching groove 241, a press matching through hole 242, an upper mold groove 25, a lower mold base 3, a first core drawing assembly groove 31, an inclined guide post sliding groove 311, a second core drawing assembly groove 32, a third core drawing assembly groove 33, a lower mold groove 34, a trapezoidal matching through hole 35, a mold press matching block 36, an arc groove 361, a press matching hole 362, a mold press support rod 37, a press support opening 371, an upper mold 4, a first three-way core groove 41, a second three-way core groove 42, an inclined connection groove 43, a connection arc groove 431, a lower mold 5, a mold inclined groove 51, a glue outlet groove 52, a V-shaped three-way core groove 53, a support hole 54, a support plate 6, a support vertical plate 7, a top plate 8, a top outlet rod 81, a top plate, The core-pulling mechanism comprises a bottom plate 9, a rubber outlet pipe 91, a first core-pulling assembly 10, a second core-pulling assembly 20, a core-pulling bottom plate 201, an inclined guide post sliding through hole 2011, two side sliding plates 202, a core-pulling slider 203, an inclined guide post through hole 2031, a slider inclined surface 2032, an inclined guide post 204, a core-pulling model 205, a first matching surface 2051, a second matching surface 2052, a matching groove 2053, a matching bump 2054, a third core-pulling assembly 30, a core-pulling inclined bottom plate 301, two inclined side sliding plates 302, an inclined core-pulling slider 303, an inverted trapezoidal matching block 3031, an inclined matching groove 3032, a moving through hole 3033, a core-pulling cylinder 304, a cylinder fixing plate 3041, a core.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, as indicating orientations or positional relationships, are based on the orientation or positional relationships of the figures, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the three-way pipe injection mold comprises a top plate 1, an upper mold base 2, a lower mold base 3, an upper mold 4, a lower mold 5, a supporting plate 6, a supporting vertical plate 7, an ejector plate 8 and a bottom plate 9; the middle part of the top plate 1 is provided with a glue injection port 101; a top plate matching block 102 is arranged on the bottom surface of the left side of the top plate 1; the upper die holder 2 is arranged below the top plate 1; the middle part of the upper die holder 2 is provided with a glue injection pipe 21 communicated with the glue injection port 101; the glue injection pipe 21 is communicated with the top of the upper die 4, and inclined guide pillar holes 22 are respectively formed in the front side and the rear side of the glue injection pipe 21 on the upper die base 2; an inverted trapezoidal through hole 23 is formed in the left side of the upper die base 2, a main pipeline of the tee joint and branch pipelines are not in the same plane through the inverted trapezoidal through hole 23, and a die pressing matching block 24 is arranged in the inverted trapezoidal through hole 23; the mould pressing matching block 24 is inclined, and a pressing matching through hole 242 is formed in the middle of the mould pressing matching block 24; roof cooperation piece 102 lower part is provided with roof cooperation opening 1021, and mould press fit piece 24 cooperatees with roof cooperation piece 102, and roof cooperation piece 102 further increases the effect of moulding plastics when being convenient for remove through roof cooperation opening 1021 and mould press fit piece 24's press fit through-hole 242 cooperation connection, increase joint strength. The bottom surface of the upper die holder 2 is provided with an upper die groove 25, and the bottom of the inverted trapezoidal through hole 23 is connected with the left side of the upper die groove 25; the mold press-fit block 24 is positioned at the connecting position of the upper mold groove 25, and the main pipeline is injected by the mold press-fit block 24.
The lower die holder 3 is matched with the upper die holder 2; a first drawing core component groove 31, a second drawing core component groove 32, a third drawing core component groove 33 and a lower die groove 34 are arranged on the lower die base 3; the first core pulling component groove 31, the second core pulling component groove 32 and the third core pulling component groove 33 are combined to form a Y shape, the first core pulling component groove 31, the second core pulling component groove 32 and the third core pulling component groove 33 are respectively provided with a first core pulling component 10, a second core pulling component 20 and a third core pulling component 30, and the three core pulling components are used for three paths of three-way core pulling; the lower die groove 34 is arranged at the joint of the three core-pulling assembly grooves, the lower die groove 34 is communicated with the three core-pulling assembly grooves, and a plurality of glue outlet channels are arranged on the lower die groove 34; the top of the trapezoidal mating through hole 35 engages the left side of the lower die slot 34. A trapezoidal matching through hole 35 communicated with the die inclined groove 51 is formed in the lower die base 3 and is positioned below the die inclined groove 51; the main pipeline and the branch pipelines of the tee joint are not on the same plane through the trapezoidal matching through hole 35, and the space is saved. A mould jacking matching block 36 is arranged in the trapezoidal matching through hole 35, and a downward concave arc-shaped groove 361 is arranged on the mould jacking matching block 36; the die pressing and matching block 24 is provided with an arc-shaped matching groove 241 which is concave upwards, and the arc-shaped groove 361 and the arc-shaped matching groove 241 are matched to form a three-way pipeline. The mould jacking supporting rod 37 is connected to the mould jacking matching block 36 in a matching manner; a lock 11 is arranged between the upper die holder 2 and the lower die holder 3, and the stability during injection molding is further improved through the lock 11. The right side of the lower die holder 3 is provided with a die opening handle 12, and the die opening of workers is further facilitated through the die opening handle 12.
The upper die 4 is arranged in the upper die groove 25; the bottom surface of the upper die 4 is provided with a first three-way core groove 41 and a second three-way core groove 42; the first three-way core groove 41 and the second three-way core groove 42 are combined to form a V-shape. The left end of the upper die 4 is provided with an inclined joint groove 43 matched with the die inclined groove 51; the inclined connection groove 43 is provided with a connection arc-shaped groove 431, and the connection arc-shaped groove 431 is connected with the two three-way core grooves; the front end and the rear end of the right side of the upper die 4 are respectively provided with a triangular matching groove 44 matched with the core pulling component on the right side of the two three-way core grooves.
The lower die 5 is arranged in the lower die groove 34, the lower die 5 is provided with a V-shaped three-way core groove 53 matched with the upper die 4, the V-shaped three-way core groove 53 is provided with an ejection hole 54, and the ejection hole 54 is used for installing an ejection rod 81 so as to facilitate the ejection of a finished product. The left middle part of the lower die 5 is provided with a die inclined groove 51; the middle part of the top surface of the lower die 5 is provided with a glue outlet groove 52, the glue outlet groove 52 is provided with a glue outlet through hole 521, and injection molding glue can further flow out conveniently.
The supporting plate 6 is arranged below the lower die holder 5; the two supporting vertical plates 7 are respectively arranged at the front side and the rear side below the supporting plate 6; the ejector plate 8 is arranged between the two supporting vertical plates 7, a plurality of ejector rods 81 are arranged on the ejector plate 8, the ejector plate 8 ejects a finished workpiece through the lifting driving assembly, the ejector rods 81 penetrate through the die to sequentially eject the tight matching block 36 and the lower die 5, the ejector rods 81 are flush with the bottom surface of two three-way core slots in the lower die 5, and therefore injection molding glue can be prevented from flowing out, attractiveness of the workpiece is not affected, and the finished product can be ejected. The bottom plate 9 is arranged below the two supporting vertical plates 7; a rubber outlet pipe 91 is arranged in the center of the bottom plate 9.
As shown in fig. 1 to 6, the first core pulling assembly 10 and the second core pulling assembly 20 are symmetrically arranged and have the same structure; the first core pulling assembly 10 comprises a core pulling bottom plate 201, two side sliding plates 202, a core pulling slide block 203, an inclined guide post 204 and a core pulling model 205; the core back bottom plate 201 is arranged at the bottom of the first core drawing component groove 31, the two side sliding plates 202 are arranged at two sides of the first core drawing component groove 31, the core back slide block 203 is arranged between the two side sliding plates 202, and the core back slide block 203 slides between the two side sliding plates 202; one end of the core-pulling sliding block 203 is provided with a sliding block inclined surface 2032, and the upper die base 2 is provided with a limiting block 26 which is matched with the sliding block inclined surface 2032 and prevents the core-pulling sliding block 203 from moving; the stop block 26 is matched with the slider inclined plane 2032, and the stop block 26 is arranged in the first core-pulling assembly groove 31. The limiting block 26 is used for further facilitating the control of the core pulling slide block 203 and better matching with the inclined guide post 204 to complete core pulling. The core pulling slider 203 is provided with an inclined guide post through hole 2031, the core pulling bottom plate 201 is provided with an inclined guide post sliding through hole 2011, the bottom of the first core pulling component groove 31 is provided with an inclined guide post sliding groove 311, the lower part of the inclined guide post 204 sequentially penetrates through the inclined guide post through hole 2031 and the inclined guide post sliding through hole 2011 to be obliquely arranged in the inclined guide post sliding groove 311, and the upper end part of the inclined guide post 204 is arranged in the inclined guide post hole 22 and matched with the upper die base 2. The fixed end of the core pulling model 205 is arranged on the core pulling slide block 203, and the core pulling model 205 moves in the first three-way core groove 41; the core pulling module 205 is provided with a first matching surface 2051 and a second matching surface 2052 at the matching end, the first matching surface 2051 is provided with a matching groove, the first matching surface 2051 of the core pulling module 205 of the second core pulling assembly 20 is provided with a matching convex block matched with the matching groove 2053, and the two core pulling modules 205 are further attached more tightly by matching the matching groove and the matching convex block, so that the appearance and the connection strength of the tee-joint connection center are improved. The two second mating surfaces 2052 of the first core back assembly 10 and the second core back assembly 20 are combined to form a circle, and the two second mating surfaces 2052 are mated with the third core back assembly 30.
When the three-way split-type injection molding machine is used, cavities of the two branch pipelines are formed through the three-way core grooves in the upper die 4 and the lower die 5, and the two branch pipelines in the V shape can be formed through injection molding by injecting injection molding glue. When the mold is opened, the limiting blocks 26 at the bottom of the upper mold base 2 move away, and simultaneously move away the outer sides of the inclined guide pillars 204, so that the core pulling slide block 203 drives the outer sides of the core pulling mold 205 to be pulled out, and finally two V-shaped branch pipelines are formed. The core pulling is further facilitated through the inclined guide post 204, and the stability in the core pulling process is also improved.
As shown in fig. 1 to 7, the third core pulling assembly groove 33 is inclined, and the third core pulling assembly 30 includes a core pulling inclined bottom plate 301, two inclined side sliding plates 302, an inclined core pulling slide block 303, a core pulling cylinder 304 and a core pulling matching model 305; the core-pulling inclined bottom plate 301 is arranged on the inclined bottom surface of the third core-pulling assembly groove 33, and the two inclined side sliding plates 302 are arranged on the front side and the rear side of the third core-pulling assembly groove 33; the inclined core-pulling slide block 303 is arranged between the two inclined side sliding plates 302; the core-pulling cylinder 304 is arranged on the left surface of the lower die holder 3 through a cylinder fixing plate; the left part of the inclined core-pulling slide block 303 is fixedly connected with the moving end of the core-pulling cylinder 304; the right part of the inclined core-pulling slide block 303 is connected with an inverted trapezoidal matching block 3031, the middle end of the right part of the inverted trapezoidal matching block 3031 is provided with an inclined matching groove 3032, the core-pulling matching model 305 is obliquely arranged at the upper part of the inclined matching groove 3032, the mold abutting matching block 36 is connected below the core-pulling matching model 305, and the mold abutting matching block 36 is provided with a downward concave arc-shaped groove 361; the die pressing and matching block 24 is provided with an arc-shaped matching groove 241 which is concave upwards, and the arc-shaped groove 361 is matched with the arc-shaped matching groove 241. The mold top tight matching block 36 is inclined, and a top tight matching hole 362 is formed in the middle of the mold top tight matching block 36; the upper part of the mold jacking support rod 37 is provided with a jacking support opening 371; the mold press-supporting rod 37 is fitted and connected to the press-fitting hole 362 of the mold press-fitting block 36 through the press-supporting opening 371. Set up in lower die base 3 and upper die base 2 through mould top tight bracing piece 37 and mould compress tightly cooperation piece 24 slope to make three-way trunk line and branch pipeline be in different planes, and compress tightly the better trunk line that makes of cooperation piece 24 and be connected with branch pipeline through mould top tight bracing piece 37 and mould, increased joint strength between the two, also reduced the flaw of both in connection transition simultaneously. The core pulling matching model 305 is connected with the two core pulling models 205 on the first core pulling component 10 and the second core pulling component 20 in a matching mode to form a Y shape, and the core pulling matching model 305 is tightly connected with the two core pulling models 205, so that a gap or a funnel is prevented from occurring, and the overall quality of the tee joint is improved.
During operation, drive the slope slider of loosing core 303 through the cylinder of loosing core 304 and remove on third core component groove 33 groove, drive cooperation model 305 of loosing core through the slope slider of loosing core 303 and remove to make the injection molding glue get into and after processing is accomplished, shift out the three-way trunk line of formation through cooperation model 305 downside of loosing core left, make trunk line and lateral conduit not in the coplanar, increased the joint strength between trunk line and the lateral conduit and saved three-way occupation space.
When the whole three-way pipe injection mold works, injection molding glue enters the glue injection pipe 21 from the glue injection port 101, the injection molding glue enters a branch pipeline cavity formed between the upper mold 4 and the lower mold 5 through the communication between the glue injection pipe 21 and the top of the upper mold 4 and flows into a main pipeline cavity formed by the matching of the mold propping supporting rod 37 and the mold pressing matching block 24, a three-way product is formed through processing and cooling, the injection molding glue flows into a flow-out pipeline on the supporting plate 6 through a glue outlet channel of the lower mold 5 and flows out from a glue outlet pipe 91 of the bottom plate 9, the first core-pulling assembly 10 and the second core-pulling assembly 20 are driven to complete core pulling of the branch pipeline by opening the upper mold base 2, the core-pulling cylinder 304 drives the third core-pulling assembly 30 to complete core pulling of the main pipeline, and finally a finished product three-way is ejected through the ejector rod 81 on.
In conclusion, the upper die base 2 and the lower die base 3 are provided with the trapezoidal through holes, the die jacking support rod 37 and the die pressing matching block 24 are obliquely arranged in the lower die base 3 and the upper die base 2, so that a main pipeline and branch pipelines are not in the same plane, the occupied space is saved, the connection strength is further increased, the service life is prolonged, the upper die base 2 is matched with the inclined guide pillar 204, core pulling of the branch pipelines is facilitated, and the stability during processing and die opening is further increased through the lockset 11.
An injection molding method of a three-way pipe sequentially comprises the following steps:
injecting glue solution: injecting injection molding glue from a glue injection port 101 of the top plate 1, wherein the injection molding glue flows into a glue injection pipe 21 on the upper die holder 2 from the glue injection port 101 and flows out from a glue outlet pipe 91 on the base;
(II) injection molding: the injection molding glue flows into the space between the upper die 4 and the lower die 5 through the top of the upper die 4 and flows into the space between the die jacking support rod 37 and the die pressing matching block 24, so that the main pipeline and the branch pipelines are in different planes, the injection molding glue forms a three-way shape through the three core pulling components and the die cavity, and the three-way pipe is immobilized through cooling;
(III) opening the mould and loosing the core: the upper die holder 2 is opened, and the branch pipeline of the tee joint is subjected to core pulling through the first core pulling assembly 10 and the second core pulling assembly 20 at the same time; the main pipeline of the three-way pipe is subjected to core pulling through a third core pulling assembly 30;
(IV) discharging finished products: the lifting driving component drives the ejector rod 81 on the ejector plate 8 to eject the finished product out of the three-way pipe which is formed by injection molding on the lower die 5.
A three-way pipe is obtained by the injection molding method.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The three-way pipe injection mold is characterized by comprising a top plate (1), an upper mold base (2), a lower mold base (3), an upper mold (4), a lower mold (5), a supporting plate (6), a supporting vertical plate (7), a jacking plate (8) and a bottom plate (9); the middle part of the top plate (1) is provided with a glue injection port (101); a top plate matching block (102) is arranged on the bottom surface of the left side of the top plate (1); the upper die base (2) is arranged below the top plate (1); the middle part of the upper die holder (2) is provided with a glue injection pipe (21) communicated with the glue injection port (101); the glue injection pipe (21) is communicated with the top of the upper die (4), and inclined guide post holes (22) are respectively formed in the front side and the rear side of the glue injection pipe (21) on the upper die base (2); an inverted trapezoidal through hole (23) is formed in the left side of the upper die holder (2); a mould pressing matching block (24) is arranged in the inverted trapezoidal through hole (23); the mould pressing matching block (24) is matched with the top plate matching block (102); an upper die groove (25) is formed in the bottom surface of the upper die holder (2); the upper die (4) is arranged in the upper die groove (25); the bottom surface of the upper die (4) is provided with a first three-way core groove (41) and a second three-way core groove (42); the first three-way core groove (41) and the second three-way core groove (42) are combined to form a V shape; the lower die holder (3) is matched with the upper die holder (2); a first core drawing component groove (31), a second core drawing component groove (32), a third core drawing component groove (33) and a lower die groove (34) are arranged on the lower die base (3); the first core pulling assembly groove (31), the second core pulling assembly groove (32) and the third core pulling assembly groove (33) are combined to form a Y shape, a first core pulling assembly (10), a second core pulling assembly (20) and a third core pulling assembly (30) are respectively arranged on the first core pulling assembly groove (31), the second core pulling assembly groove (32) and the third core pulling assembly groove (33), and the three core pulling assemblies are used for three-way core pulling; the lower die groove (34) is arranged at the joint of the three core-pulling assembly grooves, the lower die groove (34) is communicated with the three core-pulling assembly grooves, and a plurality of glue outlet channels are arranged on the lower die groove (34); the lower die (5) is arranged in the lower die groove (34), the lower die (5) is provided with a V-shaped three-way core groove (53) matched with the upper die (4), and the V-shaped three-way core groove (53) is provided with an ejection hole (54); the middle part of the left side of the lower die (5) is provided with a die inclined groove (51); a trapezoidal matching through hole (35) communicated with the die inclined groove (51) is formed in the lower die base (3) and is positioned below the die inclined groove (51); a glue outlet groove (52) is formed in the middle of the top surface of the lower die (5), and a glue outlet through hole (521) is formed in the glue outlet groove (52); a mould jacking matching block (36) is arranged in the trapezoidal matching through hole (35), and a mould jacking supporting rod (37) is connected to the mould jacking matching block (36) in a matching manner; the supporting plate (6) is arranged below the lower die holder (3); the two supporting vertical plates (7) are respectively arranged at the front side and the rear side below the supporting plate (6); the ejection plate (8) is arranged between the two supporting vertical plates (7), a plurality of ejection rods (81) are arranged on the ejection plate (8), the ejection plate (8) ejects a finished workpiece through a lifting driving assembly, the ejection rods (81) penetrate through the die to sequentially eject the matching block (36) and the lower die (5), the ejection rods (81) are arranged in the ejection holes (54), and the ejection rods (81) are flush with the bottom surfaces of the two three-way core grooves in the lower die (5); the bottom plate (9) is arranged below the two supporting vertical plates (7); a rubber outlet pipe (91) is arranged in the center of the bottom plate (9).
2. The three-way pipe injection mold according to claim 1, characterized in that the first core pulling assembly (10) and the second core pulling assembly (20) are symmetrically arranged and have the same structure; the first core-pulling assembly (10) comprises a core-pulling bottom plate (201), two side sliding plates (202), a core-pulling sliding block (203), an inclined guide post (204) and a core-pulling model (205); the core pulling bottom plate (201) is arranged at the bottom of the first core pulling assembly groove (31), the two side sliding plates (202) are arranged at two sides of the first core pulling assembly groove (31), the core pulling slide block (203) is arranged between the two side sliding plates (202), and the core pulling slide block (203) slides between the two side sliding plates (202); an inclined guide post through hole (2031) is formed in the core-pulling sliding block (203), an inclined guide post sliding through hole (2011) is formed in the core-pulling bottom plate (201), an inclined guide post sliding groove (311) is formed in the bottom of the first core-pulling assembly groove (31), the lower portion of the inclined guide post (204) sequentially penetrates through the inclined guide post through hole (2031) and the inclined guide post sliding through hole (2011) to be obliquely arranged in the inclined guide post sliding groove (311), and the upper end portion of the inclined guide post (204) is arranged in the inclined guide post hole (22); the fixed end of the core pulling model (205) is arranged on the core pulling slide block (203), and the core pulling model (205) moves in the first three-way core groove (41); the core-pulling module comprises a core-pulling module (205), and is characterized in that a first matching surface (2051) and a second matching surface (2052) are arranged on the matching end of the core-pulling module (205), a matching groove is arranged on the first matching surface (2051) of the core-pulling module (205) of a second core-pulling assembly (20), a matching convex block matched with the matching groove (2053) is arranged on the first matching surface (2051), the two second matching surfaces (2052) of the first core-pulling assembly (10) and the second core-pulling assembly (20) are combined to form a circle, and the two second matching surfaces (2052) are matched with a third core-pulling assembly (30).
3. The three-way pipe injection mold according to claim 1, wherein the third core pulling assembly groove (33) is inclined, and the third core pulling assembly (30) comprises a core pulling inclined bottom plate (301), two inclined side sliding plates (302), an inclined core pulling sliding block (303), a core pulling cylinder (304) and a core pulling matching model (305); the core-pulling inclined bottom plate (301) is arranged on the inclined bottom surface of the third core-pulling assembly groove (33), and the two inclined side sliding plates (302) are arranged on the front side and the rear side of the third core-pulling assembly groove (33); the inclined core-pulling sliding block (303) is arranged between the two inclined side sliding plates (302); the core pulling cylinder (304) is arranged on the left surface of the lower die holder (3) through a cylinder fixing plate (3041); the left part of the inclined core-pulling sliding block (303) is fixedly connected with the moving end of the core-pulling cylinder (304); the right part of the inclined core pulling slide block (303) is connected with an inverted trapezoidal matching block (3031), the right middle end of the inverted trapezoidal matching block (3031) is provided with an inclined matching groove (3032), the core pulling matching model (305) is obliquely arranged on the upper part of the inclined matching groove (3032), and the inverted trapezoidal matching block (3031) is provided with a moving through hole (3033) for the core pulling matching model (305) to move; the mold is characterized in that the mold jacking matching block (36) is connected below the core pulling matching model (305), and the core pulling matching model (305) is matched with the first core pulling component (10) and the second core pulling component (20).
4. The three-way pipe injection mold according to claim 1, wherein the mold abutting fitting block (36) is provided with a downward concave arc-shaped groove (361); the mould compresses tightly and is provided with curved mating groove (241) to the fovea upwards on cooperation piece (24), curved groove (361) and curved mating groove (241) phase-match.
5. The three-way pipe injection mold according to claim 2, characterized in that one end of the core-pulling slider (203) is provided with a slider inclined surface (2032), and the upper mold base (2) is provided with a limiting block (26) which is matched with the slider inclined surface (2032) and prevents the core-pulling slider (203) from moving; the mould pressing and matching block (24) is inclined, and a pressing and matching through hole (242) is formed in the middle of the mould pressing and matching block (24); a top plate matching opening (1021) is formed in the lower part of the top plate matching block (102); the top plate matching block (102) is matched and connected with a pressing matching through hole (242) of the mold pressing matching block (24) through a top plate matching opening (1021); the mould top tight matching block (36) is inclined, and a top tight matching hole (362) is formed in the middle of the mould top tight matching block (36); a jacking support opening (371) is arranged at the upper part of the mould jacking support rod (37); the mold jacking support rod (37) is matched and connected with a jacking matching hole (362) of the mold jacking matching block (36) through a jacking support opening (371).
6. The three-way pipe injection mold according to claim 1, wherein the left end of the upper mold (4) is provided with an inclined joint groove (43) which is matched with the mold inclined groove (51); the inclined connection groove (43) is provided with a connection arc-shaped groove (431), and the connection arc-shaped groove (431) is connected with the two three-way core grooves; and the front end and the rear end of the right side of the upper die (4) are positioned on the right sides of the two three-way core grooves and are respectively provided with a triangular matching groove (44) matched with the core pulling component.
7. The three-way pipe injection mold according to claim 1, wherein the bottom of the inverted trapezoidal through hole (23) is engaged with the left side of the upper mold groove (25); the top of the trapezoidal matching through hole (35) is connected with the left side of the lower die groove (34).
8. The three-way pipe injection mold according to claim 1, wherein a lock (11) is arranged between the upper mold base (2) and the lower mold base (3); the right side of the lower die holder (3) is provided with a die opening handle (12).
9. The injection molding method of the three-way pipe is characterized by sequentially comprising the following steps of:
injecting glue solution: injecting injection molding glue from a glue injection port (101) of the top plate (1), wherein the injection molding glue flows into a glue injection pipe (21) on the upper die base (2) from the glue injection port (101) and flows out from a glue outlet pipe (91) on the base;
injection molding: the injection molding glue flows into the space between the upper die (4) and the lower die (5) through the top of the upper die (4) and flows into the space between the die jacking support rod (37) and the die pressing matching block (24), so that the main pipeline and the branch pipelines are in different planes, the injection molding glue forms a three-way shape through the three core pulling assemblies and the die cavity, and the three-way pipe is immobilized through cooling;
opening the mold and pulling the core: the upper die base (2) is opened, and the branch pipelines of the tee joint are subjected to core pulling through the first core pulling assembly (10) and the second core pulling assembly (20) at the same time; completing core pulling on the main pipeline of the three-way pipe through a third core pulling assembly (30);
discharging a finished product: the lifting driving component drives the ejector rod (81) on the ejector plate (8) to eject a finished product out of the three-way pipe which is formed by injection molding on the lower die (5).
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| CN201910288184.9A CN110142934B (en) | 2019-04-11 | 2019-04-11 | Three-way pipe and injection mold and method thereof |
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| CN201910288184.9A CN110142934B (en) | 2019-04-11 | 2019-04-11 | Three-way pipe and injection mold and method thereof |
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| CN110142934B true CN110142934B (en) | 2021-02-26 |
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| CN112519138B (en) * | 2020-11-28 | 2022-10-25 | 重庆成田科技有限公司 | Core-pulling device of mold for injection molding |
| CN113715273A (en) * | 2021-11-04 | 2021-11-30 | 广东鑫硕精密科技有限公司 | Water nozzle mold for coffee machine |
| CN114770881A (en) * | 2022-06-16 | 2022-07-22 | 成都宝利根创科电子有限公司 | Device for floating and firstly pulling core in slider core pulling |
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