CN110900991A - Five-way pipe injection mold without thimble seal on surface - Google Patents
Five-way pipe injection mold without thimble seal on surface Download PDFInfo
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- CN110900991A CN110900991A CN201811080159.3A CN201811080159A CN110900991A CN 110900991 A CN110900991 A CN 110900991A CN 201811080159 A CN201811080159 A CN 201811080159A CN 110900991 A CN110900991 A CN 110900991A
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- 238000002347 injection Methods 0.000 title claims abstract description 37
- 239000007924 injection Substances 0.000 title claims abstract description 37
- 238000001746 injection moulding Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000452 restraining effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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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
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a five-way pipe injection mold without a thimble print on the surface, which comprises a rear mold seat, a front mold seat, a first insert, a sliding part and an ejector plate, wherein the front mold seat is arranged on the front side of the rear mold seat in a manner of moving back and forth, and the front mold seat and the rear mold seat are combined to form an inner cavity for forming a five-way pipe; the sliding part is arranged on the rear die holder in a manner of moving back and forth, the first end of the first insert penetrates through the sliding part and is arranged at the front part of the sliding part in a manner of moving back and forth along the axial direction of the main through pipe, the second end of the first insert is restrained at the outer side of the sliding part, and the ejection plate is arranged on the rear die holder in a manner of moving back and forth and is connected with the rear part of the sliding part. After the injection molding is finished, the mold is opened, the sliding piece is ejected forwards through the ejection plate, so that the first mold insert drives the five-way pipe to be separated from the mold base and be located at a suspended position, then the first mold insert is ejected out of the main pipe of the five-way pipe, the demolding of the product is realized, the ejection pin is not required to be ejected in the whole process, the ejection pin mark cannot be left on the surface of the product, the demolding efficiency is high, and the attractiveness of the product is improved.
Description
Technical Field
The invention relates to a five-way pipe injection mold without a thimble seal on the surface.
Background
An injection mold is a tool for producing plastic products. Injection molding is a common processing method for mass production of parts with complex shapes, and specifically refers to injecting a material melted by heat into a mold cavity from high pressure, and obtaining a formed product after cooling and solidification.
In the prior art, a five-way pipe structure has appeared, for example, chinese patent "a five-way pipe joint for cooling water of injection mold" (application number: CN201620647772.9) with publication number CN205767340U discloses a structure, which comprises a joint body, the cross section of the joint body is Y-shaped, and the joint body is respectively provided with a first joint, a second joint and a third joint; a transfusion cavity is arranged in the connector body, and the first connector, the second connector and the third connector are respectively communicated with the transfusion cavity; liquid separation joints are arranged on two sides of the joint body, positioning grooves and liquid outlet grooves are arranged at the axial positions of the liquid separation joints, and the liquid outlet grooves are communicated with the infusion cavity; a liquid stopping column is arranged at the liquid outlet groove, a through groove is formed in the inner end of the liquid stopping column, and a buckling cap is arranged at the outer end of the liquid stopping column and is arranged at the outer end of the liquid separating joint; the inward facing surface of the buckle cap is provided with a positioning block which is arranged in the positioning groove; the outer peripheral surface of the liquid stopping column is sleeved with a positioning cylinder which is arranged at the liquid outlet groove.
The branch pipelines of the five-way pipe structure and the main pipeline are all located on the same horizontal plane, and production is relatively simple. Fig. 1 shows a five-way pipe 100, which includes a main pipe 10a, a first branch pipe 10b, a second branch pipe 10c, and a third branch pipe 10d, the first branch pipe is connected to a side wall of the main pipe and arranged at a certain angle with the main pipe, the second branch pipe is connected to another side wall of the main pipe and arranged at a certain angle with the main pipe, and the axial leads of the first branch pipe and the second branch pipe are in the same horizontal plane as the axial lead of the main pipe, the third branch pipe is also connected to a side wall of the main pipe and arranged at a certain angle with the main pipe, but the axial lead of the third branch pipe and the axial lead of the main pipe are arranged perpendicular to the axial leads of the first branch pipe and the second branch pipe, and the axial lead of the main pipe, and the production mold of the prior art cannot meet the production requirements of the five-way pipe. In addition, the injection mold for producing the pipe of the injection mold adopts the ejector pins to eject the product after the injection molding is finished, so that the ejector pin marks are easily left on the surface of the product, and the attractiveness of the product is affected.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a five-way pipe injection mold which is high in production efficiency and capable of improving the product attractiveness and has no thimble marks on the surface.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a five-way pipe injection mold that surface does not have thimble seal which characterized in that: comprises that
A rear die holder;
the front die holder is arranged on the front side of the rear die holder in a manner of moving back and forth, and the front die holder and the rear die holder are combined to form an inner cavity for forming a five-way pipe;
the first insert is arranged on the rear die holder in a reciprocating manner and can be inserted into the inner cavity to form the inner wall of the main through pipe;
the first end of the first insert penetrates through the sliding piece and is arranged at the front part of the sliding piece in a manner of moving back and forth along the axial direction of the main through pipe, and the second end of the first insert is restrained at the outer side of the sliding piece; and
and the ejecting plate is arranged on the rear die holder in a manner of moving back and forth and is connected with the rear part of the sliding part.
Preferably, the slider has a side wall arranged close to the five-way tube and axially mutually perpendicular to the main tube. This structure is convenient for offset with main siphunculus tip to make first mold insert break away from main siphunculus.
In order to facilitate assembly, an installation cavity for installing the ejector plate is formed in the middle of the rear die holder, a guide pillar extending forwards and backwards is arranged in the installation cavity, and the ejector plate can be arranged in the installation cavity in a front-back movement mode through the guide pillar. And an opening communicated with the mounting cavity is formed in the rear side wall of the rear die holder, so that the power structure can extend into the mounting cavity to drive the ejector plate to move back and forth.
Preferably, a power mechanism for driving the first insert to move back and forth is arranged on the outer side of the sliding part.
In order to facilitate connection, the rear die holder is provided with a sliding groove extending forwards and backwards, and correspondingly, the side wall of the sliding part is provided with a sliding block matched with the sliding groove in a guiding manner.
In the above solution, the rear mold base comprises
A rear substrate;
the rear template is arranged on the front side of the rear substrate; and
the rear die core is embedded on the rear die plate, the front side wall of the rear die core is exposed out of the front side surface of the rear die plate, and a first die groove used for forming the outer wall of a part of the five-way pipe is formed in the front side wall of the rear die core.
The front die holder comprises
The front base plate is arranged on the front side of the rear template in a manner of moving back and forth;
the front template is arranged on the rear side of the front substrate in a back-and-forth movement mode and is positioned on the front side of the rear template, and the front template can move backwards to be close to and aligned with the rear template;
the first front die core is embedded on the front template, the rear side wall of the first front die core is exposed out of the rear side surface of the front template, and a second die groove for forming the outer wall of a part of the five-way pipe is formed in the rear side wall of the first front die core; and
the second front die core is embedded on the front die plate, the rear side wall of the second front die core is exposed out of the rear side face of the front die plate, the second front die core is positioned below the first front die core, the upper wall face of the second front die core is close to and aligned with the lower wall face of the first front die core, a third die groove used for forming the outer wall of a part of the five-way pipe is formed in the rear side wall of the second front die core, and the third die groove, the first die groove and the second die groove jointly form a die cavity used for forming the outer wall of the complete five-way pipe.
The injection mold also comprises
The second insert is movably arranged on the rear template and can be inserted into the die cavity to form the inner wall of the first branch pipe of the five-way pipe;
the third insert is movably arranged on the rear template and can be inserted into the die cavity to form the inner wall of the second branch pipe of the five-way pipe;
the fourth insert is movably arranged on the front template and can be inserted into the die cavity to form the inner wall of the third branch pipe of the five-way pipe;
and the injection molding pipe penetrates through the front base plate, the front template and the first front mold core/the second front mold core to be arranged, the front port of the injection molding pipe is exposed out of the front side surface of the front base plate, a flow passage communicated with the mold cavity is correspondingly formed in the first front mold core/the second front mold core and the rear mold core, and the rear port of the injection molding pipe is communicated with the flow passage.
Compared with the prior art, the invention has the advantages that: the invention provides a special die for injection molding of a five-way pipe, wherein a front die holder and a rear die holder are mutually matched to form an injection inner cavity corresponding to the five-way pipe when the special die is used, injection molding is carried out, after the injection molding is finished, the die is opened, a sliding piece is ejected forwards through an ejection plate, so that a first insert drives the five-way pipe to be separated from the die holder and be positioned at a suspension position, then the first insert is ejected out of a main pipe of the five-way pipe, the product is demoulded, the ejection of an ejector pin is not needed in the whole process, the ejector pin mark cannot be left on the surface of the product, the demoulding efficiency is high, and.
Drawings
FIG. 1 is a schematic structural diagram of a bottom bracket in the background art of the present invention;
FIG. 2 is a schematic structural diagram of the injection mold according to the embodiment of the present invention in a mold closing state;
FIG. 3 is a schematic structural diagram of the injection mold according to the embodiment of the present invention in a first mold opening state;
FIG. 4 is a schematic structural diagram of the injection mold according to the embodiment of the present invention in the second mold opening state;
FIG. 5 is a schematic structural view of the rear portion of the injection mold of FIG. 4 (without the bottom bracket);
FIG. 6 is a schematic view of the front portion of the injection mold of FIG. 4;
FIG. 7 is a schematic structural diagram of a first front mold core and a second front mold core in a mutually closed state according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a matching structure of the first front mold core, the second front mold core, the fourth insert, the third slide block and the fourth slide block according to the embodiment of the present disclosure;
FIG. 9 is an exploded view of FIG. 8;
fig. 10 is a schematic view of an assembly structure of a fourth insert, a first guide, a second guide, a third slide, a fourth slide and a front substrate according to an embodiment of the present invention;
FIG. 11 is a schematic view of the first guide member of FIG. 10;
FIG. 12 is a partially exploded view of FIG. 6;
fig. 13 is a schematic structural view of the second guide of fig. 10.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 13, the injection mold for a five-way pipe of the present invention includes a front mold base 10, a rear mold base 20, a first insert 1, a second insert 2, a third insert 3, a fourth insert 4, and an injection pipe 5. The front mold base 10 includes a front substrate 101, a front mold plate 6, a first front mold core 71, and a second front mold core 72, and the rear mold base 20 includes a rear substrate 201, a rear mold plate 8, and a rear mold core 9.
The front substrate 101 is disposed on the front side of the rear substrate 201 to be movable back and forth with a space formed therebetween, the rear mold 8 is disposed on the front side of the rear substrate 201, the front mold 6 is disposed on the rear side of the front substrate 101 to be movable back and forth and on the front side of the rear mold 8, and the front mold 6 is movable back to be brought close to and aligned with the rear mold 8. The rear die core 9 is embedded on the rear template 8, the front side wall of the rear die core 9 is exposed out of the front side surface of the rear template 8, the front side wall of the rear die core 9 is provided with a first die groove 91 for forming the outer wall of the partial five-way pipe 100, the first front die core 71 is embedded on the front template 6, the rear side wall of the first front die core is exposed out of the rear side surface of the front template 6, the rear side wall of the first front mold core 71 is provided with a second mold groove 711 for forming the outer wall of a part of the five-way pipe 100, the second front mold core 72 is embedded on the front template 6, the rear side wall of the second front mold core is exposed out of the rear side surface of the front template 6, the second front mold core 72 is positioned below the first front mold core 71, the upper wall surface of the second front mold core is close to and aligned with the lower wall surface of the first front mold core 71, the rear side wall of the second front mold core 72 is provided with a third mold groove 721 for forming the outer wall of the part of the five-way pipe 100, the third cavity 721, the first cavity 91 and the second cavity 711 together form a mold cavity for forming the outer wall of the complete bottom bracket 100.
The first insert 1 is movably provided on the back platen 8 and can be inserted in the cavity for forming the inner wall of the main tube 10a of the five-way tube 100. The second insert 2 is movably provided on the back platen 8 and can be inserted in the cavity for forming the inner wall of the first branch 10b of the bottom bracket 100. The third insert 3 is movably provided on the back platen 8 and can be inserted in the cavity for forming the inner wall of the second branch 10c of the bottom bracket 100. The fourth insert 4 is movably provided on the front platen 6 and can be inserted in the molding cavity for forming the inner wall of the third branch 10d of the bottom bracket 100. The injection molding pipe 5 penetrates through the front base plate 101, the front template 6 and the first front mold core 71 to be arranged, the front port of the injection molding pipe 5 is exposed out of the front side surface of the front base plate 101, the first front mold core 71 and the rear mold core 9 are correspondingly formed with flow passages 712 and 92 communicated with the mold cavity, and the rear port of the injection molding pipe 5 is communicated with the flow passages 712 and 92.
In order to improve the injection molding precision, the edge of the rear mold core 9 is provided with a positioning protrusion 93 protruding forward, and correspondingly, the first front mold core 71 and the second front mold core 72 are provided with positioning grooves 713 and 722 for the positioning protrusion 93 to be clamped therein, so that the rear mold core 9 is aligned with the first front mold core 71 and the second front mold core 72.
In this embodiment, the rear mold plate 8 is provided with a first sliding groove 81 axially arranged along the first branch pipe 10b, a first sliding block 82 capable of moving back and forth is arranged in the first sliding groove 81, and the second insert 2 is arranged on the inner wall of the first sliding block 82 arranged close to the first branch pipe 10 b. The injection mold of the present embodiment further includes a first driving structure capable of driving the first slide block 82 to move outwardly along the first slide groove 81 so as to withdraw the second insert 2 from the first branch pipe 10 b. The first driving structure includes a first inclined guide rod 21 and a first positioning block 22, the first inclined guide rod 21 is fixed on the front template 6 through the first positioning block 22, and the first inclined guide rod 21 is inclined outward from front to back, correspondingly, a first inclined hole 821, which is consistent with the inclined direction of the first inclined guide rod 21 and can be inserted into the first inclined guide rod 21 for sliding, is opened on the front side wall of the first sliding block 82. The rear side wall of the front template 6 is provided with a first mounting opening 61, the first positioning block 22 is embedded in the first mounting opening 61, the first positioning block 22 is provided with a first assembling hole 221 for the first inclined guide rod 21 to pass through, the first inclined guide rod 21 passes through the first assembling hole 221 and is arranged, the first end of the first inclined guide rod 21 is constrained on the first positioning block 22, and the second end of the first inclined guide rod 21 gradually extends towards the first sliding block 82. For the convenience of assembly, the first end of the first guiding ramp 21 has a first position-limiting portion 211 capable of preventing the first guiding ramp from separating from the first assembling hole 221, and the inner bottom wall of the first mounting opening 61 is opened with a first position-avoiding opening 611 for accommodating the first position-limiting portion 211.
The rear mold plate 8 is provided with a second chute 83 axially arranged along the second branch pipe 10c, a second slide block 84 capable of moving back and forth is arranged in the second chute 83, and the third insert 3 is arranged on the inner wall of the second slide block 84 close to the second branch pipe 10 c. The injection mold of this embodiment further includes a second driving structure capable of driving the second slide 84 to move outwardly along the second slide groove 83 so as to withdraw the third insert 3 from the second branch pipe 10 c. The second driving structure includes a second inclined guide rod 31 and a second positioning block 32, the second inclined guide rod 31 is fixed on the front mold plate 6 through the second positioning block 32, and the second inclined guide rod 31 is inclined gradually outward from front to back, correspondingly, a second inclined hole 841 is formed on the front side wall of the second slider 84, the second inclined hole 841 is consistent with the inclined direction of the second inclined guide rod 31 and can be used for the second inclined guide rod 31 to slide. A second mounting opening 62 is formed in a rear side wall of the front mold plate 6, a second positioning block 32 is embedded in the second mounting opening 62, a second assembling hole 321 through which the second inclined guide rod 31 passes is formed in the second positioning block 32, the second inclined guide rod 31 passes through the second assembling hole 321, a first end of the second inclined guide rod 31 is constrained on the second positioning block 32, and a second end of the second inclined guide rod 31 gradually extends towards the second slider 84. For the convenience of assembly, the first end of the second guiding bar 31 has a second limiting portion 311 capable of preventing the second guiding bar from being separated from the second assembling hole 321, and the inner bottom wall of the second mounting hole 62 is provided with a second clearance hole 621 for accommodating the second limiting portion 311.
The front base plate 101 is provided with a third slide groove 1011 arranged laterally, the fourth insert 4 is arranged obliquely from front to rear in the axial direction of the third branch pipe 10d and has a front end slidably connected to the third slide groove 1011, and the front end of the fourth insert 4 has a restraining portion 4a capable of restraining the fourth insert 4 slidably in the third slide groove 1011. The first front mold core 71 is provided with a first inclined groove 714 which is through up and down and inclined from front to back, the first inclined groove 714 is internally provided with a third sliding block 41 which can move back and forth, the end surface of the first end of the third sliding block 41 is provided with a fourth mold cavity 410 which can correspondingly form a half of the outer wall of the third branch pipe 10d, and the fourth mold cavity 410 forms a part of the second mold cavity 711. The second front mold core 72 is provided with a third chute 723 which is through up and down and inclined from front to back, a fourth slider 42 which can move back and forth is arranged in the third chute 723, a fifth mold cavity 420 which can correspondingly form the outer wall of the other half of the third branch pipe 10d is arranged on the end surface of the first end of the fourth slider 42, and the fifth mold cavity 420 forms a part of the third mold cavity 721. Since the axial lead of the third branch pipe 10d is different from that of the main through pipe 10a, the first branch pipe 10b and the second branch pipe 10c, it is difficult to directly form the corresponding injection mold cavities on the first front mold core 71 and the second front mold core 72, and therefore, by adopting such a structure, not only the third branch pipe can be formed, but also the demolding is facilitated.
The injection mold of the present embodiment further includes a third driving structure capable of driving the first end of the third slider 41 to exit the first chute 714 outwardly to disengage the third branch pipe 10 d. The third driving structure includes a first assembling block 43 and a first guiding member 44, a second inclined slot 64 disposed corresponding to the first inclined slot 714 and communicated with the first inclined slot 714 is opened on a side wall of the front mold plate 6, a third mounting opening 65 communicated with the first inclined slot 714 is opened on a front side of the front mold plate 6, the first assembling block 43 is disposed in the third mounting opening 65, a lower surface of the first assembling block forms a part of a front wall surface of the second inclined slot 64, a front end of the first guiding member 44 is constrained on the front base plate 101, and a second end of the first guiding member 44 passes through the first assembling opening 431 on the first assembling block 43 to be slidably connected with the third sliding block 41 and can drive the third sliding block 41 to slide outwards when the front base plate 101 moves forwards. The third slider 41 is provided with a first guide opening 411 which is arranged close to the outer end and gradually inclines outwards from front to back, the back end of the first guide piece 44 is formed into a first U-shaped structure 441 with an opening arranged towards back, the first opening 4411 of the first U-shaped structure 441 gradually inclines outwards from front to back, and the first U-shaped structure 441 is provided with a first part 4412 which is inserted into the first guide opening 411 in a sliding manner and is matched with the first guide opening in a guiding manner and a second part 4413 which is matched with the outer side wall of the third slider 41 in a guiding manner.
The injection mold of the present embodiment further includes a fourth driving structure capable of driving the first end of the fourth slider 42 to exit the third chute 723 outwardly to disengage from the third branch pipe 10 d. The fourth driving structure includes a second assembly block 45 and a second guide 46, a fourth inclined groove 66 disposed corresponding to the third inclined groove 723 and communicated with the third inclined groove 723 is formed on a side wall of the front mold plate 6, a fourth mounting opening 67 communicated with the third inclined groove 723 is formed on a front side of the front mold plate 6, the second assembly block 45 is disposed in the fourth mounting opening 67, a lower surface of the second assembly block forms part of a front wall surface of the fourth inclined groove 66, a front end of the second guide 46 is constrained on the front base plate 101, and a second end of the second guide 46 passes through the second assembly opening 451 on the second assembly block 45 to be slidably connected with the fourth slider 42 and can drive the fourth slider 42 to slide outwards when the front base plate 101 moves forwards. The fourth slider 42 is opened with a second guiding opening 421 disposed close to the outer end and gradually inclining outwards from front to back, the back end of the second guiding element 46 is formed into a second U-shaped structure 461 with an opening disposed towards back, the second opening 4611 of the second U-shaped structure 461 gradually inclines outwards from front to back, and the second U-shaped structure 461 has a third portion 4612 capable of being inserted into the second guiding opening 421 in a sliding manner and being in guiding fit therewith and a fourth portion 4613 capable of being in guiding fit with the outer side wall of the fourth slider 42.
In this embodiment, in order to improve the stability, the front substrate 101 is provided with a guide post 200 extending backward, the front mold plate 6 is correspondingly provided with a first guide hole 68 for the guide post 200 to pass through, and the rear mold plate 8 is correspondingly provided with a second guide hole 85 for the guide post 200 to be inserted into.
The rear mold plate 8 of this embodiment is provided with a driving structure capable of driving the first insert 1 to exit from the main through pipe 10 a. In order to facilitate the product removal, the rear base plate 201 is provided with an ejection mechanism b capable of ejecting the formed five-way tube 100 from the rear mold core 9. Wherein the driving mechanism is integrated with the ejection mechanism b, and the first insert 1 is ejected from the main through pipe 10a after the five-way pipe 100 is separated from the rear mold core 9. The structure comprises a sliding part 30 and an ejector plate 40, wherein the sliding part 30 is arranged on a rear template 8 in a back-and-forth moving manner, a first end of a first insert 1 penetrates through the sliding part 30 and is arranged at the front part of the sliding part 30 in a back-and-forth moving manner along the axial direction of a main pipeline 10a, a second end of the first insert 1 is restrained at the outer side of the sliding part 30, an installation cavity 400 for installing the ejector plate 40 is formed between the rear template 8 and a rear substrate 201, the ejector plate 40 is arranged in the installation cavity 400 in a back-and-forth moving manner and is connected with the rear part of the sliding part 30, a guide pillar 401 extending back and forth is arranged in the installation cavity 400, and the ejector plate 40 is arranged in. The rear base plate 201 is provided with an opening 2011 for allowing a power end of the injection molding device to pass through and be connected with the ejector plate 40, so as to drive the ejector plate 40 to move back and forth. Specifically, the slider 30 has a side wall 301 disposed close to the five-way tube 100 and axially orthogonal to the main tube 10 a. A power mechanism for driving the first insert 1 to move back and forth is arranged on the outer side of the sliding part 30, and the power mechanism is a cylinder 303. The rear template 8 is provided with a sliding groove 86 extending forwards and backwards, and correspondingly, the side wall of the sliding part 30 is provided with a sliding block 302 matched with the sliding groove 86 in a guiding way. By adopting the structure, no thimble mark is left on the surface of the five-way pipe 100, and the appearance attractiveness of the product can be improved.
In this embodiment, the first mold cavity 91, the second mold cavity 711, and the third mold cavity 721 have an extension area 910 extending from the main tube 10a at a portion corresponding to the main tube 10a, and correspondingly, the first insert 1 has an extension portion 1a capable of tightly fitting with the extension area 910. If the end of the die cavity for forming the main pipe 10a is aligned with the main pipe 10a, flash is easily formed on the inner wall of the end of the main pipe 10a, which affects the assembly of the main pipe.
When the injection mold of the embodiment is used, injection molding is performed through the injection pipe 5 in a mold closing state to form the five-way pipe 100; the first mold opening is performed, and the front base plate 101 is moved forward with respect to the front platen 6, that is, as shown in fig. 3, in order to withdraw the fourth insert 4, the third slide 41, and the fourth slide 42 from the cavity and expose the third branch pipe 10 d; a second opening of the mold is carried out, the front platen 6 being moved forward with respect to the rear platen 8, i.e. as shown in fig. 4, in order to withdraw the second insert 2 from the first branch 10b, the third insert 3 from the second branch 10c, exposing the first branch 10b and the second branch 10 c; the ejector plate 40 moves forward to eject the first insert 1 and the five-way pipe 100 forward at the same time, so that the five-way pipe 100 is separated from the rear mold core 9, the cylinder 301 runs to make the first insert 1 withdraw from the main pipe 10a, and the five-way pipe is completely separated from the injection mold.
Claims (10)
1. The utility model provides a five-way pipe injection mold that surface does not have thimble seal which characterized in that: comprises that
A rear die holder (20);
the front die holder (10) is arranged on the front side of the rear die holder (20) in a front-back movement mode, and the front die holder (10) and the rear die holder (20) are matched to form an inner cavity for forming a five-way pipe (100);
the first insert (1) is arranged on the rear die holder (20) in a reciprocating manner and can be inserted into the inner cavity to form the inner wall of the main through pipe (100);
the sliding piece (30) is arranged on the rear die holder (20) in a back-and-forth movable mode, the first end of the first insert (1) penetrates through the sliding piece (30) and is arranged in the front of the sliding piece (30) in a back-and-forth movable mode along the axial direction of the main through pipe (10a), and the second end of the first insert (1) is restrained on the outer side of the sliding piece (30); and
and the ejecting plate (40) is arranged on the rear die holder (20) in a manner of moving back and forth and is connected with the rear part of the sliding part (30).
2. The five-way pipe injection mold without the thimble print on the surface according to claim 1, characterized in that: the sliding piece (30) is provided with a side wall which is arranged close to the five-way pipe (100) and is vertical to the axial direction of the main through pipe (10 a).
3. The five-way pipe injection mold without the thimble print on the surface according to claim 1, characterized in that: the middle part of the rear die holder (20) is provided with an installation cavity (400) for installing the ejector plate (40), a guide pillar (401) extending forwards and backwards is arranged in the installation cavity (400), and the ejector plate (40) can be arranged in the installation cavity (400) in a front-back movement mode through the guide pillar (401).
4. The five-way pipe injection mold without the thimble print on the surface according to claim 3, characterized in that: an opening (2011) communicated with the mounting cavity (400) is formed in the rear side wall of the rear die holder (20) so that the power structure can extend into the mounting cavity (400) to drive the ejector plate (40) to move back and forth.
5. The five-way pipe injection mold without the thimble print on the surface according to any one of claims 1 to 4, wherein: and a power mechanism for driving the first insert (1) to move back and forth is arranged on the outer side of the sliding part (30).
6. The five-way pipe injection mold without the thimble print on the surface according to any one of claims 1 to 4, wherein: the rear die holder (20) is provided with a sliding groove (86) extending forwards and backwards, and correspondingly, the side wall of the sliding part (30) is provided with a sliding block (302) matched with the sliding groove (86) in a guiding way.
7. The five-way pipe injection mold without the thimble print on the surface according to any one of claims 1 to 4, wherein: the rear die holder (20) comprises
A rear substrate (201);
a rear template (8) provided on the front side of the rear substrate (201); and
the rear die core (9) is embedded on the rear die plate (8), the front side wall of the rear die core is exposed out of the front side face of the rear die plate (8), and a first die groove (91) for forming the outer wall of a part of the five-way pipe (100) is formed in the front side wall of the rear die core (9).
8. The five-way pipe injection mold without the thimble print on the surface according to claim 7, wherein: the front die holder (10) comprises
A front base plate (101) which is provided on the front side of the rear mold plate (8) so as to be movable forward and backward;
the front template (6) is arranged on the rear side of the front substrate (101) in a front-back movement mode and is positioned on the front side of the rear template (8), and the front template (6) can move backwards to be close to and aligned with the rear template (8);
the first front die core (71) is embedded on the front template (6), the rear side wall of the first front die core is exposed out of the rear side surface of the front template (6), and a second die groove (711) for forming the outer wall of a part of the five-way pipe (100) is formed in the rear side wall of the first front die core (71); and
the second front die core (72) is embedded on the front die plate (6), the rear side wall of the second front die core is exposed out of the rear side face of the front die plate (6), the second front die core (72) is positioned below the first front die core (71), the upper wall face of the second front die core is close to and aligned with the lower wall face of the first front die core (71), a third die slot (721) used for forming the outer wall of a part of the five-way pipe (100) is formed in the rear side wall of the second front die core (72), and the third die slot (721), the first die slot (91) and the second die slot (711) jointly form a die cavity (100a) used for forming the outer wall of the complete five-way pipe (100).
9. The five-way pipe injection mold without the thimble print on the surface according to claim 8, wherein: also comprises
A second insert (2) movably arranged on the rear template (8) and capable of being inserted into the die cavity (100a) for forming the inner wall of the first branch pipe (10b) of the five-way pipe (100);
a third insert (3) movably arranged on the rear template (8) and capable of being inserted into the die cavity (100a) for forming the inner wall of a second branch pipe (10c) of the five-way pipe (100); and
and a fourth insert (4) which is movably arranged on the front template (8) and can be inserted into the die cavity (100a) for forming the inner wall of the third branch pipe (10d) of the five-way pipe (100).
10. The five-way pipe injection mold without the thimble print on the surface according to claim 9, characterized in that: the injection molding device is characterized by further comprising an injection molding pipe (5), wherein the injection molding pipe (5) penetrates through the front base plate (101), the front template (6), the first front mold core (71)/the second front mold core (72) to be arranged, the front port of the injection molding pipe (5) is exposed out of the front side face of the front base plate (101), flow channels (712 and 92) communicated with the mold cavity (100a) are correspondingly formed in the first front mold core (71)/the second front mold core (72) and the rear mold core (9), and the rear port of the injection molding pipe (5) is communicated with the flow channels (712 and 92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080159.3A CN110900991B (en) | 2018-09-17 | 2018-09-17 | Five-way pipe injection mold without thimble seal on surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080159.3A CN110900991B (en) | 2018-09-17 | 2018-09-17 | Five-way pipe injection mold without thimble seal on surface |
Publications (2)
| Publication Number | Publication Date |
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| CN110900991A true CN110900991A (en) | 2020-03-24 |
| CN110900991B CN110900991B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114954762A (en) * | 2022-06-20 | 2022-08-30 | 句容志新精密五金零件有限公司 | Vehicle five-way pipe body with high impact resistance |
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| CN108466413A (en) * | 2018-03-04 | 2018-08-31 | 乌鲁木齐九品芝麻信息科技有限公司 | A kind of front mold slide is without ejection injection mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6790027B1 (en) * | 2001-03-28 | 2004-09-14 | Mgs Mfg. Group, Inc. | Two-shot, rotary three station injection mold |
| CN204235832U (en) * | 2014-10-16 | 2015-04-01 | 台州市黄岩炜大塑料机械有限公司 | Three-dimensional four-way, five-way exchange pipe fitting mold angled-lift splits mould emptier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114954762A (en) * | 2022-06-20 | 2022-08-30 | 句容志新精密五金零件有限公司 | Vehicle five-way pipe body with high impact resistance |
| CN114954762B (en) * | 2022-06-20 | 2023-10-10 | 句容志新精密五金零件有限公司 | Five-way pipe body with high impact resistance for vehicle |
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| Publication number | Publication date |
|---|---|
| CN110900991B (en) | 2021-11-12 |
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Denomination of invention: A Five way Pipe Injection Mold with No Top Pin Printing on the Surface Effective date of registration: 20231102 Granted publication date: 20211112 Pledgee: Bank of China Limited Ningbo Hangzhou Bay New Area sub branch Pledgor: NINGBO FOTILE KITCHEN WARE Co.,Ltd. Registration number: Y2023980063518 |