CN105365165A - Screw-driving skew-tooth pouring mold - Google Patents

Screw-driving skew-tooth pouring mold Download PDF

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Publication number
CN105365165A
CN105365165A CN201510802916.3A CN201510802916A CN105365165A CN 105365165 A CN105365165 A CN 105365165A CN 201510802916 A CN201510802916 A CN 201510802916A CN 105365165 A CN105365165 A CN 105365165A
Authority
CN
China
Prior art keywords
mold
die cavity
dynamic model
wedge
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510802916.3A
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Chinese (zh)
Inventor
毛德中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Ruiting Plastic Co Ltd
Original Assignee
Chongqing Ruiting Plastic Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Ruiting Plastic Co Ltd filed Critical Chongqing Ruiting Plastic Co Ltd
Priority to CN201510802916.3A priority Critical patent/CN105365165A/en
Publication of CN105365165A publication Critical patent/CN105365165A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B29C45/332—Mountings or guides therefor; Drives therefor
    • 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
    • B29C45/401—Ejector pin constructions or mountings
    • 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
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/66—Mould opening, closing or clamping devices mechanical
    • 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
    • B29C2045/4036—Ejector constructions; Ejector operating mechanisms driven by a screw and nut mechanism
    • 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
    • B29C2045/4042—Ejector constructions; Ejector operating mechanisms driven by rack and pinion means

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The invention relates to a plastic working mold and discloses a screw-driving skew-tooth pouring mold. The screw-driving skew-tooth pouring mold comprises a fixed mold and a movable mold; the fixed mold and the movable mold are relatively fit to each other to form a mold cavity; a pouring opening is formed in the mold cavity; the fixed mold is connected with the movable mold through a screw; the screw penetrates through a threaded hole in the fixed mold to be connected with the movable mold; a hand wheel is disposed at the end, located on the fixed mold, of the screw; an upper sliding seat and a lower sliding seat are disposed on the upper portion and the lower portion of the mold cavity respectively; the upper sliding seat and the lower sliding seat are in sliding joint with the movable mold; an upper gear and a lower gear are hinged to the upper sliding seat and the lower sliding seat respectively; an upper skew rack and a lower skew rack are correspondingly arranged on the fixed mold and engaged with the upper gear and the lower gear; an upper mold cavity stopper is disposed at one end, close to the mold cavity, of the upper sliding seat; a lower mold cavity stopper is arranged at one end, close to the mold cavity, of the lower sliding seat. By means of the scheme, the problem that a poured thin rod-shaped casting is prone to fracture is mainly solved, stress concentration of the surface of the casting is reduced through simultaneous demolding in three directions, so that the casting demolding is more stable, and a workpiece is effectively prevented from fracture during demolding.

Description

Spiral shell drives helical teeth casting mold
Technical field
The present invention relates to a kind of plastic machining mold.
Background technology
Injection moulding is a kind of method of industrial products production moulding.Product uses rubber injection mold and plastics injection moulding usually.Injection moulding also can divide injection mould platen press and casting die.Injection (mo(u)lding) machine (being called for short injector or injection machine) utilizes mould for plastics to make the main former of the plastic products of various shape thermoplastic or thermosetting material, and injection moulding is realized by injection machine and mould.Product is widely used in: the industry such as mobile phone, laptop computer, multiple plastic shell, communication, micro machine, computer, electrical equipment, electronics, toy, clock and watch, lamp decoration, locomotive.Injection mold is the instrument producing plasthetics, is also the instrument giving plasthetics complete structure and accurate dimension.A kind of processing method used when injection mo(u)lding is some complex-shaped parts of batch production, specifically refers to the material melted that is heated to inject die cavity by high pressure, after cooling curing, obtains formed products.
Along with the day by day maturation of injection molding technology, increasing plastic cement products can be produced by injection moulding, and simultaneously also more and more higher to the requirement of mould, mould is generally divided into dynamic model and cover half, treats that foundry goods is shaping, and dynamic model moves opens die cavity, is exposed by foundry goods and then takes off; For the shaft-like foundry goods that some are thinner, if simple employing dynamic model positioned opposite and the cover half demoulding, foundry goods unbalance stress can be made, easily cause casting deformation to be torn or directly rupture.
Summary of the invention
The invention is intended to provide a kind of deform spiral shell of fracture of very thin foundry goods of avoiding to drive helical teeth casting mold.
Spiral shell in this programme drives helical teeth casting mold, comprise fixed half and moving half, described fixed half and moving half is fitted formation die cavity relatively, die cavity is provided with sprue gate, connected by screw rod between described fixed half and moving half, the screwed hole that screw rod is provided with through cover half is connected with dynamic model again, the through hole that dynamic model is provided with is placed in one end of screw rod connection dynamic model, both sides screw rod being positioned at dynamic model are provided with spacing shoulder, the cross-sectional area of this shoulder is greater than the via area on dynamic model, and one end that screw rod is positioned at cover half is provided with handwheel; The upper and lower of die cavity is respectively equipped with upper saddle and lower slider, upper saddle and lower slider are slidably connected on dynamic model respectively, upper saddle and lower slider are hinged with respectively and cog and lower gear, on cover half correspondence be provided with helical rack, lower helical rack and cog, lower gear engagement, upper saddle and lower slider are respectively equipped with upper cavity plug and lower mode cavity plug near one end of die cavity, described upper cavity plug and the shutoff of lower mode cavity plug are being located in the opening on die cavity side, the face that die cavity upper mouth is relative is provided with push rod, and push rod passes dynamic model and extends in die cavity.
Beneficial effect: cast starts, dynamic model and cover half close, and upper saddle and lower slider push against to die cavity direction, upper cavity plug and lower mode cavity plug is made to block opening on die cavity side, mould-injection fused solution is watered in die cavity, to be cast shaping after, rotation hand wheel drive screw, one end that screw rod is positioned at dynamic model rotates equally, screw rod feeding promotes dynamic model and moves, dynamic model and cover half are laterally separately, upper helical rack, lower helical rack promotes on upper saddle and lower slider, lower slider, the cooperation of rack and pinion makes stressed more rationally even, upper cavity plug and lower mode cavity plug and die cavity are separately, realize the demoulding on workpiece three directions, make stress dispersion suffered by workpiece, not easy fracture, so the demoulding is stablized feasible more, when the demoulding completes, now workpiece is still bonded on dynamic model, promotes push rod, is ejected by workpiece, workpiece is come off.Such scheme is for the problem of the thinner shaft-like foundry goods easy fracture of cast, and by the demoulding simultaneously on three directions, the stress reducing cast(ing) surface is concentrated, and makes the demoulding of foundry goods more stable, effectively avoids rupturing during the workpiece demoulding.
Further, the upper and lower of described upper saddle and lower slider is respectively equipped with wedge and lower wedge, upper wedge, lower wedge are provided with and described upper helical rack, inclined-plane that lower helical rack gradient is identical, upper saddle, lower slider are respectively equipped with and inclined-plane that upper wedge, lower wedge inclined-plane fit.Wedge and lower wedge are set, certain supporting role can be played to upper saddle, lower slider, upper saddle, lower slider are slided more stable, so increase mold releasability reliability.
Further, described upper saddle, lower slider are provided with boss near one end of upper cavity plug, lower mode cavity plug, and this boss is sandwiched in the stopper slot being located at die cavity outside, carries out spacing to boss, prevent upper cavity plug, lower mode cavity plug from offseting, cannot opening on shutoff die cavity side.
Further, described push rod is connected with slide block away from one end of die cavity, dynamic model is laterally provided with slide bar, slide bar makes slide block slide on slide bar through slide block, and slide block is provided with away from the side of die cavity the baffle plate limiting slide position, and slide bar leads to push rod, push rod is made to move steadily, the movement of baffle plate to push rod is spacing, and make push rod release end and just go out die cavity, the drive end of push rod reaches baffle position.
Further, described upper wedge and lower wedge are connected on cover half respectively by bolt, and cross bar bolt is connected on dynamic model, and bolt connects reliable, and detachably, is convenient to dismounting.
Accompanying drawing explanation
Fig. 1 is the structural representation that spiral shell of the present invention drives helical teeth casting mold embodiment.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: cover half 1, upper wedge 11, lower wedge 12, upper helical rack 13, lower helical rack 14, dynamic model 2, push rod 21, die cavity 3, screw rod 4, handwheel 41.
Embodiment is substantially as shown in Figure 1:
Spiral shell in this programme drives helical teeth casting mold, comprise cover half 1 and dynamic model 2, cover half 1 laminating relative to dynamic model 2 forms die cavity 3, die cavity 3 has sprue gate, connected by screw rod 4 between cover half 1 and dynamic model 2, screw rod 4 is connected with dynamic model 2 through the screwed hole that cover half 1 has, the through hole that dynamic model 2 has is placed in one end that screw rod 4 connects dynamic model 2, screw rod 4 is positioned at the shoulder of the both sides welded limiting of dynamic model 2, the cross-sectional area of this shoulder is greater than the via area on dynamic model 2, and one end that screw rod 4 is positioned at cover half 1 is connected with handwheel 41.
Die cavity 3 upper, below is separately installed with upper saddle and lower slider, upper saddle and lower slider are slidably connected on dynamic model 2 respectively, upper saddle and lower slider are hinged with respectively and cog and lower gear, on cover half 1, correspondence is provided with helical rack 13, lower helical rack 14 and cogging, lower gear engages, upper saddle and lower slider are processed with upper cavity plug and lower mode cavity plug respectively near one end of die cavity 3, in upper cavity plug and the opening of lower mode cavity plug shutoff on die cavity 3 side, the face that die cavity 3 upper mouth is relative is provided with push rod 21, push rod 21 passes dynamic model 2 and extends in die cavity 3.
The upper and lower of upper saddle and lower slider is separately installed with wedge 11 and lower wedge 12, upper wedge 11, lower wedge 12 are processed with and described upper helical rack 13, inclined-plane that lower helical rack 14 gradient is identical, upper saddle, lower slider are processed with respectively and inclined-plane that upper wedge 11, lower wedge 12 inclined-plane fit.Wedge 11 and lower wedge 12 are set, certain supporting role can be played to upper saddle, lower slider, upper saddle, lower slider are slided more stable, so increase mold releasability reliability.Upper saddle, lower slider are processed with boss near one end of upper cavity plug, lower mode cavity plug, and this boss is sandwiched in out in the stopper slot of die cavity 3 outside, carries out spacing to boss, prevent upper cavity plug, lower mode cavity plug from offseting, cannot opening on shutoff die cavity 3 side.
Push rod 21 is connected with slide block away from one end of die cavity 3, dynamic model 2 is laterally provided with slide bar, slide bar makes slide block slide on slide bar through slide block, slide block is provided with away from the side of die cavity 3 baffle plate limiting slide position, slide bar leads to push rod 21, and push rod 21 is moved steadily, and the movement of baffle plate to push rod 21 is spacing, make push rod 21 release end and just go out die cavity 3, the drive end of push rod 21 reaches baffle position.Upper wedge 11 and lower wedge 12 are connected on cover half 1 respectively by bolt, and cross bar bolt is connected on dynamic model 2, and bolt connects reliable, and detachably, is convenient to dismounting.
Operation principle: cast starts, dynamic model 2 and cover half 1 close, and upper saddle and lower slider push against to die cavity 3 direction, upper cavity plug and lower mode cavity plug is made to block opening on die cavity 3 side, mould-injection fused solution is watered in die cavity 3, to be cast shaping after, rotation hand wheel 41 drive screw 4, one end that screw rod 4 is positioned at dynamic model 2 rotates equally, screw rod 4 feeding promotes dynamic model 2 and moves, dynamic model 2 and cover half 1 are laterally separately, upper helical rack 13, lower helical rack 14 promotes on upper saddle and lower slider, lower slider, the cooperation of rack and pinion makes stressed more rationally even, upper cavity plug and lower mode cavity plug and die cavity 3 are separately, realize the demoulding on workpiece three directions, make stress dispersion suffered by workpiece, not easy fracture, so the demoulding is stablized feasible more, when the demoulding completes, now workpiece is still bonded on dynamic model 2, promotes push rod 21, is ejected by workpiece, workpiece is come off.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.

Claims (5)

1. a spiral shell drives helical teeth casting mold, comprise fixed half and moving half, described fixed half and moving half is fitted formation die cavity relatively, die cavity is provided with sprue gate, it is characterized in that: connected by screw rod between described fixed half and moving half, be connected with dynamic model again after the screwed hole that screw rod is provided with through cover half, the through hole that dynamic model is provided with is placed in one end of screw rod connection dynamic model, both sides screw rod being positioned at dynamic model are provided with spacing shoulder, the cross-sectional area of this shoulder is greater than the via area on dynamic model, and one end that screw rod is positioned at cover half is provided with handwheel; The upper and lower of die cavity is respectively equipped with upper saddle and lower slider, upper saddle and lower slider are slidably connected on dynamic model respectively, upper saddle and lower slider are hinged with respectively and cog and lower gear, on cover half correspondence be provided with helical rack, lower helical rack and cog, lower gear engagement, upper saddle and lower slider are respectively equipped with upper cavity plug and lower mode cavity plug near one end of die cavity, described upper cavity plug and the shutoff of lower mode cavity plug are being located in the opening on die cavity side, the face that die cavity upper mouth is relative is provided with push rod, and push rod passes dynamic model and extends in die cavity.
2. spiral shell according to claim 1 drives helical teeth casting mold, it is characterized in that: the upper and lower of described upper saddle and lower slider is respectively equipped with wedge and lower wedge, upper wedge, lower wedge are provided with and described upper helical rack, inclined-plane that lower helical rack gradient is identical, upper saddle, lower slider are respectively equipped with and inclined-plane that upper wedge, lower wedge inclined-plane fit.
3. spiral shell according to claim 2 drives helical teeth casting mold, it is characterized in that: described upper saddle, lower slider are provided with boss near one end of upper cavity plug, lower mode cavity plug, and this boss is sandwiched in the stopper slot being located at die cavity outside.
4. spiral shell according to claim 3 drives helical teeth casting mold, it is characterized in that: described push rod is connected with slide block away from one end of die cavity, dynamic model is laterally provided with slide bar, and slide bar makes slide block slide on slide bar through slide block, and slide block is provided with away from the side of die cavity the baffle plate limiting slide position.
5. spiral shell according to claim 4 drives helical teeth casting mold, it is characterized in that: described upper wedge and lower wedge are connected on cover half respectively by bolt, and cross bar bolt is connected on dynamic model.
CN201510802916.3A 2015-11-19 2015-11-19 Screw-driving skew-tooth pouring mold Pending CN105365165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510802916.3A CN105365165A (en) 2015-11-19 2015-11-19 Screw-driving skew-tooth pouring mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510802916.3A CN105365165A (en) 2015-11-19 2015-11-19 Screw-driving skew-tooth pouring mold

Publications (1)

Publication Number Publication Date
CN105365165A true CN105365165A (en) 2016-03-02

Family

ID=55368043

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510802916.3A Pending CN105365165A (en) 2015-11-19 2015-11-19 Screw-driving skew-tooth pouring mold

Country Status (1)

Country Link
CN (1) CN105365165A (en)

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160302

WD01 Invention patent application deemed withdrawn after publication