CN108724653B - Mold ejection mechanism and mold comprising same - Google Patents
Mold ejection mechanism and mold comprising same Download PDFInfo
- Publication number
- CN108724653B CN108724653B CN201810723585.8A CN201810723585A CN108724653B CN 108724653 B CN108724653 B CN 108724653B CN 201810723585 A CN201810723585 A CN 201810723585A CN 108724653 B CN108724653 B CN 108724653B
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- Prior art keywords
- mold
- ejector
- ejector plate
- plate
- insert
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 239000003292 glue Substances 0.000 claims description 43
- 238000007723 die pressing method Methods 0.000 claims description 12
- 238000001746 injection moulding Methods 0.000 abstract description 41
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 44
- 238000003825 pressing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- BVRDQVRQVGRNHG-UHFFFAOYSA-N 2-morpholin-4-ylpyrimido[2,1-a]isoquinolin-4-one Chemical compound N1=C2C3=CC=CC=C3C=CN2C(=O)C=C1N1CCOCC1 BVRDQVRQVGRNHG-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/26—Moulds
- B29C2045/2683—Plurality of independent mould cavities in a single mould
Abstract
The invention discloses a die ejection mechanism, which comprises a male die and a female die, wherein the ejection mechanism comprises an ejector plate and a thimble arranged on the ejector plate, and the ejector plate sequentially comprises a first ejector plate, a second ejector plate, a third ejector plate and a fourth ejector plate from top to bottom; the ejector pins comprise a first ejector pin for ejecting the runner and a second ejector pin for ejecting the injection product; the bottom of the first ejector pin is arranged between the first ejector plate and the second ejector plate, and the bottom of the second ejector pin is arranged between the third ejector plate and the fourth ejector plate. The mold ejection mechanism can drive the ejector pins to eject by opening and closing the mold, and can save energy consumption and time. The mold disclosed by the invention has the advantages that the structural design is reasonable, the mold can be subjected to twice injection molding without changing, the service life of the mold is prolonged, the production efficiency is improved, the production cost is reduced, the benefit is improved, and the mold has a good application and popularization prospect.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a die ejection mechanism and a die comprising the same.
Background
Industrial dies are used to form various molds and tools for injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc. to produce the desired product. The mold has a cavity with the same structural size as the part to be prepared, and the liquid is poured into the cavity, so that the part with the same structural size as the cavity can be formed after the liquid is cooled and solidified.
In the prior art, products with a plurality of specific requirements can be prepared by injection molding twice or even more, and most of the existing solutions are to prepare a plurality of sets of molds. Taking two sets of moulds as an example, firstly carrying out injection molding in a first set of moulds to prepare a primary injection product, then placing the obtained primary injection product into a cavity of a second set of moulds for continuous injection molding, and further obtaining a secondary injection product; or after primary injection molding in a set of mold, the male mold or the female mold is replaced to form different cavities, and then secondary injection molding is carried out to obtain a secondary injection product.
The mode can bring a plurality of problems, can more synthesize manufacturing cost, increase the technology degree of difficulty, reduced production efficiency moreover, frequent change mould can not only shorten the life of mould, increases the maintenance cost of mould, also can have the potential safety hazard when changing the mould, takes place the accident easily.
Most of mold ejection mechanisms in the prior art push out by external force, and the mold cannot be opened or closed by itself so as to drive the ejector pins to eject.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the invention aims to provide a mold ejection mechanism which has reasonable structural design and can drive a thimble to eject by opening and closing the mold.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the die comprises a male die and a female die, wherein the ejection mechanism comprises an ejector plate and an ejector pin arranged on the ejector plate, and the ejector plate sequentially comprises a first ejector plate, a second ejector plate, a third ejector plate and a fourth ejector plate from top to bottom; the ejector pins comprise a first ejector pin for ejecting the runner and a second ejector pin for ejecting the injection product; the bottom of the first ejector pin is arranged between the first ejector plate and the second ejector plate, and the bottom of the second ejector pin is arranged between the third ejector plate and the fourth ejector plate.
Preferably, the bottom end of the ejector pin is provided with a supporting part, and one side of the ejector plate, which is close to the supporting part, is provided with a supporting groove for accommodating the supporting part.
Preferably, the first ejector pin penetrates through the first ejector plate, and the second ejector pin penetrates through the first ejector plate, the second ejector plate and the third ejector plate.
Preferably, the two sides of the female die are provided with first pull rods, and the two sides of the second ejector plate are provided with second pull rods matched with the first pull rods.
More preferably, one of the first pull rod and the second pull rod is provided with a sliding groove, and the other one of the first pull rod and the second pull rod is provided with a sliding block matched with the sliding groove.
The invention also provides a die which sequentially comprises a female die pressing plate, a female die, a male die pressing plate and the die ejection mechanism.
Preferably, a male mold glue position is formed on one side of the male mold, which is close to the female mold, a first insert capable of overturning is arranged in the female mold, and a first female mold glue position and a second female mold glue position which are matched with the male mold glue position are respectively formed on two sides of the first insert.
More preferably, the female die is provided with a rotating mechanism for driving the first insert to rotate, and the rotating mechanism comprises a gear positioned at one end of the first insert, a rack matched with the gear, and a first driving device for driving the rack to stretch and retract.
More preferably, the first insert is provided with a limiting piece, and the female die is provided with a limiting hole matched with the limiting piece; the limiting piece comprises a circular ring and an arc-shaped bulge positioned at the periphery of the circular ring; the limiting hole comprises an arc notch for the arc-shaped protrusion to rotate.
Further preferably, the arc-shaped notch comprises a third end face and a fourth end face, the third end face is horizontally arranged, and the fourth end face is vertically arranged.
Compared with the prior art, the invention has the following advantages: the mold ejection mechanism can drive the ejector pins to eject by opening and closing the mold, so that not only can the energy consumption be saved, but also the mold ejection mechanism can be matched with the manufacturing time of a product, and the time is saved. The mold disclosed by the invention is reasonable in structural design, and the reversible inserts are arranged in one set of mold, so that two different cavities are formed in the mold, the inserts are controlled to turn after primary injection molding, then secondary injection is carried out, a final product is obtained, the secondary injection molding can be carried out without changing the mold, the service life of the mold is prolonged, manpower and material resources are saved, the production time is shortened, the production efficiency is improved, the production cost is reduced, the benefit is improved, and the mold has a good application and popularization prospect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a mold according to a preferred embodiment of the present invention;
FIG. 2 is a top view of a male mold in a mold according to a preferred embodiment of the present invention;
FIG. 3 is an enlarged view of section I of FIG. 2;
FIG. 4 is a cross-sectional view of A-A of FIG. 2;
FIG. 5 is an enlarged view of section II of FIG. 4;
FIG. 6 is a cross-sectional view of B-B in FIG. 2;
FIG. 7 is an enlarged view of section III of FIG. 6;
FIG. 8 is a bottom view of a master mold in a mold according to a preferred embodiment of the present invention;
FIG. 9 is an enlarged view of section IV of FIG. 8;
FIG. 10 is a perspective view of a first insert in accordance with a preferred embodiment of the present invention;
FIG. 11 is a perspective view of a second view of the first insert in accordance with the preferred embodiment of the present invention;
FIG. 12 is a perspective view of a first shot molded product in accordance with a preferred embodiment of the present invention;
FIG. 13 is a perspective view of a second view of a first injection molded product in accordance with a preferred embodiment of the present invention;
FIG. 14 is a perspective view of a second shot molded product of a preferred embodiment of the present invention from a first perspective;
FIG. 15 is a perspective view of a second shot molded product in accordance with a preferred embodiment of the present invention;
FIG. 16 is a perspective view of a rotation mechanism in a preferred embodiment of the present invention;
fig. 17 is an enlarged view of the V portion of fig. 16;
fig. 18 is a front view of the turning mechanism in the preferred embodiment of the present invention;
FIG. 19 is a schematic view of a stop and a stop aperture in a rotary mechanism according to a preferred embodiment of the present invention;
FIG. 20 is an enlarged view of section VI of FIG. 19;
FIG. 21 is a perspective view of the ejection mechanism of the preferred embodiment of the present invention without ejection;
fig. 22 is an enlarged view of part VII in fig. 21;
FIG. 23 is a perspective view of the ejection mechanism of the preferred embodiment of the present invention with the first ejector pin ejected;
FIG. 24 is an enlarged view of section VIII of FIG. 23;
FIG. 25 is a perspective view of the ejection mechanism of the preferred embodiment of the present invention showing the ejection of the first and second pins;
fig. 26 is an enlarged view of the portion IX in fig. 25;
FIG. 27 is a perspective view of a latch in a mold according to a preferred embodiment of the present invention;
FIG. 28 is a perspective view of a socket in a mold in accordance with a preferred embodiment of the present invention;
in the accompanying drawings: a top plate-1, a female die pressing plate-2, a female die-3, a first female die glue position-301, a second female die glue position-302, a male die-4, a male die glue position-401, a male die pressing plate-5, a bottom plate-6, a first insert-701, a second insert-702, a first round bar-801, a second round bar-802, a threaded structure-803, a threaded sleeve-804, a notch-805, a gear-9, a rack-10, a limiting piece-11, a first end face-1101, a second end face-1102, a circular ring-1103, an arc-shaped protrusion-1104, a limiting hole-12, a third end face-1201, a fourth end face-1202, a filling bar-13, a first moving plate-1401, a second moving plate-1402, a first driving device-1501, the second driving device-1502, the third driving device-1503, the first injection molding product-1601, the second injection molding product-1602, the first end-1603, the second end-1604, the runner-17, the groove-18, the first pull rod-1901, the second pull rod-1902, the chute-20, the slide block-21, the first ejector plate-2201, the second ejector plate-2202, the third ejector plate-2203, the fourth ejector plate-2204, the first ejector pin-2301, the second ejector pin-2302, the bolt-24, the socket-25, the positioning groove-26, the positioning protrusion-27, the supporting portion-281, the supporting groove-282, the positioning post-28, the positioning hole-29 and the glue inlet-30.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
Referring to fig. 1 to 28, a mold of the present embodiment includes, from top to bottom, a top plate 1, a female mold pressing plate 2, a female mold 3, a male mold 4, a male mold pressing plate 5, an ejection mechanism, and a bottom plate 6, wherein a male mold glue position 401 is provided on one side of the male mold 4 near the female mold 3, a first insert 701 capable of being turned over is provided in the female mold 3, and a first female mold glue position 301 and a second female mold glue position 302 matched with the male mold glue position 401 are provided on two sides of the first insert 701. The first female mold glue site 301 corresponds to the male mold glue site 401 to form a first cavity containing a first injection molded product 1601, and the second female mold glue site 302 corresponds to the male mold glue site 401 to form a second cavity containing a second injection molded product 1602.
In this embodiment, four male mold glue sites 401 are formed on the male mold 4, and four first inserts 701 are correspondingly disposed in the female mold 3, so that four products can be produced simultaneously, as shown in fig. 4. First injection molding 1601 and second injection molding 1602 are shown in fig. 12-15, wherein second end 1604 of the product is further provided with a groove 18.
As shown in fig. 4-5, the insert body of the first insert 701 corresponds to a portion cut on a cylinder, and two planes parallel to each other are formed, on which the first master mold glue site 301 and the second master mold glue site 302 are respectively opened. After the first insert 701 is mounted on the master mold 3, two planes on the first insert 701 are flush with planes on the upper and lower sides of the master mold 3, and a cross section of the first insert 701 is similar to an ellipse.
As shown in fig. 10-11, the first insert 701 has round bars at two ends, including a first round bar 801 and a second round bar 802, the end of the first round bar 801 far away from the insert body is provided with a thread structure 803, the female die 3 is provided with a thread sleeve 804 matching with the thread structure 803, the thread structure 803 is installed in the thread sleeve 804, and the first insert 701 is rotatably connected to the female die 3 through the thread structure 803 and the thread sleeve 804. The end of the second round bar 802 remote from the insert body is provided with a notch 805.
As shown in fig. 16-19, a rotation mechanism for driving the first insert 701 to rotate is provided on the master mold 3, and the rotation mechanism includes a gear 9 mounted on the second round bar 802 and far from one end of the first round bar 801, a rack 10 matched with the gear 9, and a first driving device 1501 for driving the rack 10 to stretch out and draw back. The gear 9 is matched with the gap 805, and the gear 9 is driven to rotate by the rack 10. When the first insert 701 needs to be turned over, the first driving device 1501 drives the rack 10 to stretch and retract, and the gear 9 rotates, so as to drive the first insert 701 to rotate. For the sake of clarity, two of the four first inserts 701 are provided in the form of the first injection molding, and the remaining two first inserts 701 are provided in the form of the second injection molding.
As shown in fig. 19-20, in order to more accurately realize the overturning of the first insert 701, the first female mold glue position 301 or the second female mold glue position 302 is accurately abutted with the male mold glue position 401, in this embodiment, the first insert 701 is provided with a limiting member 11, and the female mold 3 is provided with a limiting hole 12 matched with the limiting member 11. Specifically, the stop 11 is mounted on the second round bar 802 between the insert body and the gear 9, as shown in fig. 16-17. The limiting member 11 is fitted to the notch 805. Through the cooperation of the limiting piece 11 and the limiting hole 12, the first insert 701 can accurately realize the overturning of a designated angle, namely the overturning of 180 degrees in the implementation.
As shown in fig. 19-20, the limiting member 11 includes a circular ring 1103 and an arc-shaped protrusion 1104 located at the periphery of the circular ring 1103, where the central angle corresponding to the arc-shaped protrusion 1104 is 90 °; the limiting hole 12 comprises an arc notch for the arc-shaped protrusion 1104 to rotate, and the central angle corresponding to the arc notch is 270 degrees. The arc-shaped protrusion 1104 has a first end surface 1101 and a second end surface 1102, and the arc-shaped notch has a third end surface 1201 and a fourth end surface 1202, wherein the third end surface 1201 is horizontally arranged and the fourth end surface 1202 is vertically arranged in this embodiment. When the first injection molding is performed, if the second end surface 1102 of the arc protrusion 1104 is in contact with the fourth end surface 1202 of the arc notch, after the first injection molding is completed, the first driving device 1501 drives the rack 10 to move, the gear 9 drives the first insert 701 to rotate, the arc protrusion 1104 rotates in the arc notch, the first end surface 1101 and the second end surface 1102 of the arc protrusion 1104 rotate 180 °, and then the second injection molding is performed, that is, when the second injection molding is performed, the first end surface 1101 of the arc protrusion 1104 is in contact with the third end surface 1201 of the arc notch. After the second injection molding is finished, the first driving device 1501 drives the rack 10 to move in the opposite direction, and when the second end surface 1102 of the arc-shaped protrusion 1104 contacts the fourth end surface 1202 of the arc-shaped notch, the first injection molding is repeated.
As shown in fig. 2 and 21-26, the male mold is further provided with a first moving plate 1401 for forming a first end 1603 of the injection molded product and a second moving plate 1402 for forming a second end 1604 of the injection molded product. In order to achieve the effect, the filling rod 13 is disposed on the first moving plate 1401 corresponding to the male mold glue position 401, and the filling rod 13 moves along with the first moving plate 1401. When the injection molding product is formed, the filling rod 14 is positioned in the cavity for accommodating the injection molding product, and when the product needs to be taken out, the second driving device 1502 drives the first moving plate 1401 to slide outwards, so that the filling rod 13 is driven to be separated from the cavity.
As shown in fig. 1, 4, 6 and fig. 21-26, the ejection mechanism comprises an ejector plate and a thimble arranged on the ejector plate, wherein the ejector plate comprises a first ejector plate 2201, a second ejector plate 2202, a third ejector plate 2203 and a fourth ejector plate 2204 from top to bottom in sequence; the ejector pins include first and second ejector pins 2301, 2302 extending through the male die platen 5 and the male die 4. The first ejector 2301 is used for ejecting the runner 17, and the second ejector 2302 is used for ejecting the product. The lower end of the first ejector pin 2301 is located between the first ejector plate 2201 and the second ejector plate 2202, and the lower end of the second ejector pin 2302 is located between the third ejector plate 2203 and the fourth ejector plate 2204. The first ejector pin 2301 penetrates the first ejector plate 2201 and the male mold 4, and the second ejector pin 2302 penetrates the first ejector plate 2201, the second ejector plate 2202, the third ejector plate 2203 and the male mold 4.
As shown in fig. 4 and 6, the bottom end of the ejector pin is provided with a supporting portion 281, and a supporting groove 282 for accommodating the supporting portion 281 is formed on one side of the ejector plate close to the supporting portion 281, and the size of the supporting groove 282 is matched with that of the supporting portion 281. In this embodiment, the first ejector plate 2201 and the third ejector plate 2203 are provided with supporting grooves 282, that is, the supporting portion 281 at the bottom of the first ejector pin 2301 is sandwiched by the first ejector plate 2201 and the second ejector plate 2202; the support portion 281 of the bottom of the second ejector pin 2302 is sandwiched by the third ejector plate 2203 and the fourth ejector plate 2204.
As shown in fig. 23-24, when second ejector plate 2202 moves upward, second ejector plate 2202 pushes first ejector pins 2301 and first ejector plate 2201 upward, ejecting runner 17; when the second ejector plate 2202 falls back, the first ejector plate 2201 also falls back downward, and the first ejector pins 2301 are urged to fall back by the supporting portions 281 of the ejector pins and the supporting grooves 282 of the first ejector plate 2201 being engaged with each other. As shown in fig. 25-26, when the fourth ejector plate 2204 moves upward, the fourth ejector plate 2204 pushes the second ejector pins 2302, the third ejector plates 2203, the second ejector plates 2202, the first ejector pins 2301 and the first ejector plates 2201 upward, so that the flow channels 17 and the product can be ejected simultaneously.
In this embodiment, first tie rods 1901 are provided on both sides of the master mold 3, and second tie rods 1902, which are matched with the first tie rods 1901, are provided on both sides of the second ejector plate 2202. One of the first pull rod 1901 and the second pull rod 1902 is provided with a sliding groove 20, and the other is provided with a sliding block 21 matched with the sliding groove 20. As shown in fig. 1 and 4, in this embodiment, a sliding groove 20 is formed on a first pull rod 1901, a sliding block 21 matched with the sliding groove 20 is disposed on a second pull rod 1902, and the second pull rod 1902 is inverted "L". When the female mold 3 moves upward, the first pull rod 1901 moves upward, the chute 20 moves upward, the slider 21 slides in the chute 20, and when the slider 21 slides to the bottommost end of the chute 20, the first pull rod 1901 drives the second pull rod 1902 to move upward, so that the second ejector plate 2202 moves upward, pushing the first ejector pin 2301 and the first ejector plate 2201 to move upward, and ejecting the runner 17.
As shown in fig. 1, in this embodiment, a positioning and locking device is provided on the outer side surfaces of the male mold 4 and the female mold 3, and includes a plug 24 provided on one of the outer side surfaces of the male mold 4 and the female mold 3 and a socket 25 provided on the other of the male mold 4 and the female mold 3 and matching the plug 24. In this embodiment, the male mold 4 is provided with the male pin 24 on the outer side surface thereof, the female mold 24 is provided with the corresponding female pin 25 on the outer side surface thereof, and the two male pins 24 and female pins 25 are provided on the remaining two outer side surfaces excluding the first tie rod 1901. As shown in fig. 27-28, the latch 24 is provided with an arcuate detent 26, and the socket 25 is provided with a detent projection 27 that mates with the arcuate detent 26. Through the mutual matching of the arc-shaped positioning groove 26 and the positioning protrusion 27, a certain effect is achieved on preventing accidental bouncing off and die closing positioning between the male die 4 and the female die 3.
One surface of the male die 4 and the female die 3, which are close to each other, is provided with a positioning column 28, and the other surface is provided with a positioning hole 29 matched with the positioning column 28. As shown in fig. 2 and 8, in this embodiment, a positioning post 28 is selectively provided on the female mold 3, and a positioning hole 29 is correspondingly provided on the male mold 4.
The first driving device 1501, the second driving device 1502 and the third driving device 1503 may be identical or different, and may be selected from a cylinder, an oil cylinder and the like.
Since the second end 1604 end of the injection molded product in this embodiment has a groove 18, a second insert 702 for preparing the groove 18 is also provided in the male mold 4, as shown in fig. 6-7. When injection molding is desired, the top of the second insert 702 is positioned in the male mold compound 401. An elastic piece is arranged between the male die 4 and the male die pressing plate 5, and the elastic piece plays a role in bouncing the male die 4 and the male die pressing plate 5 when the male die 4 is separated from the male die pressing plate 5; when the male mold 4 is engaged with the male mold platen 5, the second insert 702 is urged upward into the male mold glue station 401. When the male die 4 is separated from the male die pressing plate 5, the second insert 702 falls back, and the second insert 702 is separated from the male die glue position 401 or the product, so that the injection molding product is conveniently taken out. The elastic member is preferably a spring.
The working procedure of the mold capable of being secondarily molded in this embodiment is briefly described below:
before the first injection molding is performed, the female mold pressing plate 2 is tightly attached to the female mold 3, the male mold pressing plate 5 is tightly attached to the male mold 4, the first moving plate 1401 and the second moving plate 1402 are tightly attached to the male mold glue position 401, a first cavity for accommodating the first injection molding product 1601 is formed by the first female mold glue position 301 of the female mold 3 corresponding to the male mold glue position 401, the filling rod 13 is located in the first cavity, and the top of the second insert 702 is located at the second end 1604 of the first cavity, as shown in fig. 6-7.
Next, the first injection molding is performed, and a flowing polymer material or a metal material is injected into the first cavity, and cooled to form a first injection molded product 1601.
After the first injection molding is completed, the female mold 3 is moved upward, and the male mold 4 and the female mold 3 are separated from each other. When the female mold 3 moves upward, the first pull rod 1901 is driven to move upward, and when the slider 21 of the second pull rod 1902 slides to the bottom of the first pull rod 1901, the first pull rod 1901 pulls the second pull rod 1902 upward, and further drives the second ejector plate 2202 to move upward, so as to push the first ejector pin 2301 and the first ejector plate 2201 upward, thereby ejecting the runner 17, as shown in fig. 23-24. At this time, the first moving plate 1401 and the second moving plate 1402 on the male mold 4 are not moved, the filling rod 13 remains in the first injection molding product 1601, the third ejector plate 2203 and the fourth ejector plate 2204 are not moved, the second ejector pins 2302 do not perform the ejection operation, and the first injection molding product 1601 remains in the male mold glue position 401.
Then the female die pressing plate 2 and the female die 3 are sprung out by 4.0mm, the first driving device 1501 drives the rack 10 to move, the first insert 701 is driven to rotate through the rotation of the gear 9, and after the first insert is precisely rotated by 180 degrees through the limiting device, the female die pressing plate 2 is attached to the female die 3 again, the male die 4 and the female die 3 are clamped, the positions of the first female die glue position 301 and the second female die glue position 302 are mutually exchanged, and the second female die glue position 302 and the male die glue position 401 are correspondingly formed into a second cavity for accommodating the second injection molding product 1602.
And then performing secondary injection molding, injecting flowing polymer material or metal material into the second cavity, and cooling to form a secondary injection molded product 1602. The second shot product 1602 is formed on the basis of the first shot product 1601. The portion adjacent to the male mold glue site 401 is unchanged, and only on the side adjacent to the female mold 3, the final injection product is changed by replacing the first female mold glue site 301 with the second female mold glue site 302.
As shown in fig. 25 to 26, after the second injection molding is completed, the female mold 3 is moved upward, and the male mold 4 and the female mold 3 are separated from each other. The first moving plate 1401 and the second moving plate 1402 on two sides of the male mold 4 are respectively driven by the second driving device 1502 and the third driving device 1503 to slide out towards two sides, wherein the first moving plate 1401 drives the filling rod 13 to separate from the second injection molding product 1602. Meanwhile, the male mold pressing plate 5 and the male mold 4 are separated from each other by 8.0mm, so that the elastic member falls back, and the second insert 702 and the second injection molding product 1602 are separated from each other to facilitate the removal of the product.
As shown in fig. 25, when the female mold 3 moves upward, the first pull rod 1901 is driven to move upward, and the slider 21 of the second pull rod 1902 slides to the bottom of the first pull rod 1901, the first pull rod 1901 pulls the second pull rod 1902 upward, so as to drive the second ejector plate 2202 to move upward, and push the first ejector pin 2301 and the first ejector plate 2201 to move upward, thereby ejecting the runner 17. At the same time as first ejector pin 2301 moves upward, fourth ejector plate 2204 also moves upward, pushing second ejector pin 2302 and third ejector plate 2203 upward, thereby ejecting second injection product 1602. I.e., through first and second pins 2301 and 2302, to ultimately simultaneously eject runner 17 and second injection molding product 1602. The second shot product 1602 is then removed from the mold.
At this time, the injection molding product is completed, and one cycle is ended. Then, the female mold pressing plate 2 and the female mold 3 are separated from each other by 4.0mm, the first insert 701 in the female mold 3 is turned over by the driving of the rotating mechanism, and after the female mold pressing plate 2 is precisely rotated 180 degrees by the limiting device, the male mold 4 and the female mold 3 are closed, a first cavity is formed between the male mold 4 and the female mold 3, and then the first injection molding of the next cycle is performed.
The male mold 4 in this embodiment has only one type of male mold glue site 401, and in other embodiments, the male mold 4 may be configured in a similar manner to the first insert 701 in the female mold 3 to produce different types of products.
The mold ejection mechanism can drive the ejector pins to eject by opening and closing the mold, so that not only can the energy consumption be saved, but also the mold ejection mechanism can be matched with the manufacturing time of a product, and the time is saved. The mold disclosed by the invention is reasonable in structural design, and the reversible inserts are arranged in one set of mold, so that two different cavities are formed in the mold, the inserts are controlled to turn after primary injection molding, then secondary injection is carried out, a final product is obtained, the secondary injection molding can be carried out without changing the mold, the service life of the mold is prolonged, manpower and material resources are saved, the production time is shortened, the production efficiency is improved, the production cost is reduced, the benefit is improved, and the mold has a good application and popularization prospect.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. A mold, characterized in that: the die comprises a female die pressing plate, a female die, a male die pressing plate and a die ejection mechanism from top to bottom in sequence; the die ejection mechanism comprises an ejection plate and a thimble arranged on the ejection plate, and is characterized in that: the ejector plate comprises a first ejector plate, a second ejector plate, a third ejector plate and a fourth ejector plate from top to bottom in sequence; the ejector pins comprise a first ejector pin for ejecting the runner and a second ejector pin for ejecting the injection product; the bottom end of the first ejector pin is arranged between the first ejector plate and the second ejector plate, and the bottom end of the second ejector pin is arranged between the third ejector plate and the fourth ejector plate;
a male mold glue position is formed in one side, close to the female mold, of the male mold, a first insert capable of being turned is arranged in the female mold, and a first female mold glue position and a second female mold glue position matched with the male mold glue position are respectively formed in two sides of the first insert;
the insert body of the first insert is formed by cutting a part of a cylinder to form two parallel planes, and the two planes are respectively provided with the first master mold glue position and the second master mold glue position; after the first insert is arranged on the female die, two planes on the first insert are flush with the planes on the upper side and the lower side of the female die;
the two ends of the first insert are provided with round rods, each round rod comprises a first round rod and a second round rod, the end part, far away from the insert body, of the first round rod is provided with a thread structure, and the female die is provided with a thread sleeve matched with the thread structure.
2. A mold according to claim 1, wherein: the bottom of thimble is provided with supporting part, the liftout plate is close to one side of supporting part has seted up holds the supporting groove of supporting part.
3. A mold according to claim 1, wherein: the first ejector pin penetrates through the first ejector plate, and the second ejector pin penetrates through the first ejector plate, the second ejector plate and the third ejector plate.
4. A mold according to claim 1, wherein: the two sides of the female die are provided with first pull rods, and the two sides of the second ejector plate are provided with second pull rods matched with the first pull rods.
5. A mold according to claim 4, wherein: the sliding groove is formed in one of the first pull rod and the second pull rod, and a sliding block matched with the sliding groove is arranged on the other one of the first pull rod and the second pull rod.
6. A mold according to claim 1, wherein: the female die is provided with a rotating mechanism for driving the first insert to rotate, and the rotating mechanism comprises a gear positioned at one end of the first insert, a rack matched with the gear and a first driving device for driving the rack to stretch out and draw back.
7. A mold according to claim 1, wherein: a limiting piece is arranged on the first insert, and a limiting hole matched with the limiting piece is formed in the female die; the limiting piece comprises a circular ring and an arc-shaped bulge positioned at the periphery of the circular ring; the limiting hole comprises an arc notch for the arc-shaped protrusion to rotate.
8. A mold according to claim 7, wherein: the arc notch comprises a third end face and a fourth end face, the third end face is horizontally arranged, and the fourth end face is vertically arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2018101983516 | 2018-03-12 | ||
| CN201810198351 | 2018-03-12 |
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| CN201821055478.4U Active CN208558201U (en) | 2018-03-12 | 2018-07-04 | A kind of mold ejection mechanism and the mold comprising the ejecting mechanism |
| CN201810723585.8A Active CN108724653B (en) | 2018-03-12 | 2018-07-04 | Mold ejection mechanism and mold comprising same |
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| CN208558201U (en) * | 2018-03-12 | 2019-03-01 | 苏州品翔电通有限公司 | A kind of mold ejection mechanism and the mold comprising the ejecting mechanism |
| CN110410548A (en) * | 2019-08-26 | 2019-11-05 | 苏州市振业模具有限公司 | A kind of automotive oil tank oil valve, oil valve injection molding device and method |
| CN112277256B (en) * | 2020-09-15 | 2022-03-25 | 洛阳力诺模具有限公司 | Special die for producing aviation high-frequency connector |
| CN113386314A (en) * | 2021-07-14 | 2021-09-14 | 宝利根（东莞）电子科技有限公司 | Sectional ejection structure and mold comprising same |
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| JP2017100351A (en) * | 2015-12-01 | 2017-06-08 | 富士ゼロックス株式会社 | Mold assembly and manufacturing method of molded article |
| CN208558201U (en) * | 2018-03-12 | 2019-03-01 | 苏州品翔电通有限公司 | A kind of mold ejection mechanism and the mold comprising the ejecting mechanism |
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| CN202241823U (en) * | 2011-09-19 | 2012-05-30 | 深圳市京信通科技有限公司 | Rotary shaft type two-color die |
| CN103465439A (en) * | 2012-06-07 | 2013-12-25 | 汉达精密电子(昆山)有限公司 | Double color die mechanism for molding tricolor product |
| CN104227959A (en) * | 2013-06-18 | 2014-12-24 | 苏州汉扬精密电子有限公司 | Secondary ejection mechanism of double-injection mold |
| JP2017100351A (en) * | 2015-12-01 | 2017-06-08 | 富士ゼロックス株式会社 | Mold assembly and manufacturing method of molded article |
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| CN208558201U (en) | 2019-03-01 |
| CN108724653A (en) | 2018-11-02 |
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