CN104149279B - Capping plug injection mould and capping plug injection moulding method - Google Patents
Capping plug injection mould and capping plug injection moulding method Download PDFInfo
- Publication number
- CN104149279B CN104149279B CN201410424120.4A CN201410424120A CN104149279B CN 104149279 B CN104149279 B CN 104149279B CN 201410424120 A CN201410424120 A CN 201410424120A CN 104149279 B CN104149279 B CN 104149279B
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- plate
- ejector pin
- pin retaining
- push rod
- retaining plate
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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
- B29C45/2618—Moulds having screw-threaded mould walls
- B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
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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
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C2045/4084—Progressive ejection
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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 discloses a capping plug injection mould and a capping plug injection moulding method. The capping plug injection mould comprises a lower mould base plate, bearing feet, a bearing plate, a mould core fixed plate, a Haff fixed plate, a small mould core fixed plate and an upper mould base plate from bottom to top. A Haff structure with a thread forming cavity is arranged in the Haff fixed plate and is composed of two pieces of Haff, and a mould core and a small mould core are correspondingly arranged. The mould further comprises a secondary push-off device composed of a first pushing rod fixed plate, a second pushing rod fixed plate, a third pushing rod fixed plate, a pushing rod, a conical pushing rod and a sprue puller, and a swing hook mechanism composed of a swing hook reset plate, a swing hook, a guide rod and a spring is arranged on the secondary push-off device. The injection moulding method comprises mould assembling, injection moulding, cooling, and mould opening ejection. According to the mould opening ejection step, secondary ejection is achieved under matching of the swing hook mechanism. According to the injection mould and the injection moulding method, the mould is simple, demoulding is easy, and injection moulding and mould opening can be achieved without a dedicated injection molding machine.
Description
Technical field
The present invention relates to filling in, to having externally threaded lid, mould and the injection moulding process that row is molded.
Background technology
In injection mo(u)lding, for the product with external screw thread or female thread, its shaping and demoulding is all a great problem.For tool
Threaded product, has at present and is had the core body of screw thread die cavity or had externally threaded core body come molding by rotatable, and
Core body rotation is driven to realize the demoulding although the mould of this structure is in shaped article using drive mechanism, threaded portion molding
When precision can be of a relatively high, but during demoulding, be easily damaged the threaded portion of molding, and the structure of this mould
Complexity, the demoulding is difficult, it is also desirable to special injection machine carrys out drive transmission device to realize stripping action.
Content of the invention
It is an object of the invention to provide a kind of mould is relatively simple, the demoulding is easier to it is not necessary to special injection machine can be real
The injection mould being now molded and molding and injection moulding process.
For reaching above-mentioned purpose, lid plug injection mould, including die shoe plate, two support foots, support plate, core fixing plate,
Small-sized core fixed plate, upper clamping plate, gate bush, centring ring, push rod, guide pin bushing and guide pillar；Die shoe plate is provided with ejection hole；Supporting
The lower end of foot is arranged on die shoe plate, is formed with storage tank between two support foots；Support plate is fixed on the upper end of support foot；Type
Core fixed plate is fixed on support plate；Small-sized core fixed plate is fixed on upper clamping plate；The lower end of gate bush passes through upper bolster
Plate extend in small-sized core fixed plate；Centring ring is fixed on upper clamping plate and is enclosed within gate bush upper end；Guide pin bushing is installed
In small-sized core fixed plate, and the upper surface of guide pin bushing is kept out by upper clamping plate；Between core fixing plate and small-sized core fixed plate
It is provided with Hough fixed plate, Hough fixed plate is provided with the containing cavity of two up/down perforations, and wherein two opposite faces of containing cavity are certainly
Under the inclined-plane that stretches out upwards；It is provided with one group of half slide structure in accommodating intracavity, described half slide structure is by two symmetrical Kazakhstan
Husband's cooperation forms, and described Hough includes hypotenuse and the straight flange relative with hypotenuse with the cooperation of containing cavity inclined-plane；Straight in Hough
Side is provided with top-down semicircle atrium, and the inwall of atrium is provided with screw thread, positioned at two Houghs of same containing cavity
After combination, the corresponding opening of two Houghs forms thread forming chamber；Upper end is fixed with core fixing plate pass through through thread forming chamber
And stretch out the core of half slide structure；Die cavity corresponding with thread forming chamber position is provided with small-sized core fixed plate, in small-sized core
Fixed plate is provided with lower end and extend into the small-sized core in die cavity；Be provided with storage tank the first ejector pin retaining plate from bottom to up,
Second ejector pin retaining plate and the 3rd ejector pin retaining plate, the first ejector pin retaining plate and the second ejector pin retaining plate are fixedly connected, and first pushes away
The middle part of bar fixed plate has first through hole, and the second ejector pin retaining plate is provided with the second through hole communicating with first through hole；Push rod
Upper end passes through the second ejector pin retaining plate, the 3rd ejector pin retaining plate, support plate to contact with Hough with core fixing plate, the lower end of push rod
Kept out by the first ejector pin retaining plate；Cone push rod is fixed with the 3rd fixed plate, the upper end of cone push rod is up big and down small
Taper, the lower end of cone push rod passes through core, support plate to be fixed on the 3rd ejector pin retaining plate, is located at the 3rd in cone push rod
It is cased with back-moving spring between ejector pin retaining plate and support plate；The lower section being located at gate bush sprue in Hough fixed plate is provided with
Up-small and down-big conical cavity, is fixed with through support plate, core fixing plate, Hough fixed plate right on the 3rd ejector pin retaining plate
Should be in the sprue puller of conical cavity；Fix swing hook restoring board in the two opposite sides of the first ejector pin retaining plate, swing hook restoring board includes solid
Determine the upwardly extending restoring board in portion and self-fixed department outer end, restoring board is provided with kidney slot, restoring board and the first ejector pin retaining plate
Between there is space；The inner side being located at restoring board in the two opposite sides of the second ejector pin retaining plate is hinged with swing hook, the middle part of swing hook
Inner side is provided with the snap fit hooking the 3rd ejector pin retaining plate, is provided with guiding surface inside the upper end of swing hook；Support plate is provided with
Skewed slot with guiding surface cooperation；The guide post extending into kidney slot is provided with swing hook, is located at swing hook on the guide bar and answers
It is cased with spring between the plate of position.
Method and step using above-mentioned Injection Mold Formation lid plug is as follows：
（1）Matched moulds, during matched moulds, half slide structure resets to accommodating intracavity, and push rod, cone push rod, sprue puller reset,
Swing hook resets under the action of the spring, and the snap fit holding of swing hook is on the 3rd ejector pin retaining plate；
（2）Using injection machine to injecting material in gate bush, the sprue through gate bush for the material, sub-runner enter into
In forming recess, wherein forming recess is made up of die cavity, thread forming chamber, small-sized core, core；
（3）After the completion of injection, cooling；
（4）Mold ejecting cap plug, detailed process is：The push rod of injection machine is applied to the 3rd through first through hole, the second through hole
On ejector pin retaining plate, die sinking, so that upper clamping plate, small-sized core fixed plate, centring ring, gate bush is moved upwards, small-sized core is fixed
Plate is separated with Hough fixed plate, and the material in sprue separates from sprue, and the upper end of lid plug disengages in die cavity；Top
Bar gives thrust upwards, push rod start ejection during, the snap fit holding of swing hook on the 3rd ejector pin retaining plate, this
When, the first ejector pin retaining plate, the second ejector pin retaining plate and the 3rd ejector pin retaining plate together move upwards, push rod, cone push rod and
Sprue puller is together followed and is moved upwards, and push rod promotes half slide structure to move upwards, meanwhile, two Houghs of each group of half slide structure to
Movement outside, the male thread portion of lid plug separates from thread forming chamber, and cone push rod promotes lid plug to move upwards, and sprue puller pushes away
Dynamic cast gate coagulates material and moves upwards；First ejector pin retaining plate, the second ejector pin retaining plate and the 3rd ejector pin retaining plate are being moved through upwards
Cheng Zhong, swing hook swings out in the presence of skewed slot and guiding surface, after push rod moves to certain stroke, the hook part of swing hook
Divide and depart from the 3rd ejector pin retaining plate, now, the first ejector pin retaining plate and the second ejector pin retaining plate stop motion, the 3rd push rod is fixed
Plate continues up, and drives cone push rod to move lid plug ejection upwards；
（5）After lid plug is ejected, matched moulds, carry out injection mo(u)lding next time.
Above-mentioned injection mould and injection moulding process, due to being provided with half slide structure, and are provided with by semicircle in half slide structure
The thread forming chamber that atrium is formed, so, in injection molding process, the threaded portion of lid plug is in thread forming intracavity shape
Become；Simultaneously as being provided with first, second, third ejector pin retaining plate, and using the first ejector pin retaining plate, push rod is fixed on
On two ejector pin retaining plates, push rod is responsible for releasing Hough upwards and opening to both sides, and the threaded portion being easy to cover plug can be from screw thread
Molding intracavity disengages, and cone push rod and sprue puller are fixed on the 3rd ejector pin retaining plate, and described cone push rod is responsible for covering
Plug is released, and sprue puller is responsible for runner being coagulated material release from conical cavity, thus realizing the demoulding；In addition, resetted using swing hook
Plate, swing hook, guide post, spring and flume structure, when push rod can be made to start ejection, push rod, cone push rod and the same luck of sprue puller
Dynamic, after push rod moves to certain stroke, that is, when covering the threaded portion of plug and can disengage from half slide structure, swing hook disengaging the 3rd pushes away
Bar fixed plate, now, the first ejector pin retaining plate and the second ejector pin retaining plate stop moving upwards, the 3rd ejector pin retaining plate continue to
Upper motion, and drive cone push rod and sprue puller will cover plug ejection, can not only be suitable through covering the threaded portion of plug using Double-ejection
Profit, reliable depart from from thread forming intracavity, and can lid plug smoothly eject.Therefore, the injection mo(u)lding of the present invention does not need
Special injection machine, and mould structure is relatively simple.
Further, the inclined-plane front and back end in containing cavity is respectively equipped with gathering sill, and the front and back end of Hough is provided with and is placed in guiding
The gib block of groove, so, when ejecting half slide structure upwards, under the guide effect of gib block and gathering sill, every group of Hough knot
Two Houghs of structure can naturally be opened so that the demoulding is more smooth.
Further, it is provided with guide finger between two Houghs of every group of half slide structure, this structure, when half slide structure is opened
Using guide finger, Cheng Zhong, can guarantee that two Houghs together move upwards and open, in order to keep two Houghs of every group of half slide structure
In same level, meanwhile, also can make two Hough synchronous resets of every group of half slide structure, can guarantee that molding essence next time
Degree.
Further, it is located in the second through hole in the bottom of the 3rd ejector pin retaining plate and is fixed with push pedal, this push pedal can prevent
Push rod is applied directly on the 3rd ejector pin retaining plate, serves the effect of protection the 3rd ejector pin retaining plate, also allows for changing simultaneously
Push rod, reduces maintenance cost.
Further, it is fixed with wearing plate in the 3rd ejector pin retaining plate and snap fit contact position.In injection molding process, by
Snap fit in swing hook frequently can be rubbed with the 3rd ejector pin retaining plate, when being provided with wearing plate, can prevent the 3rd push rod
Fixed plate is worn, and wearing plate is not easy to be worn, and the cost changing wearing plate can be low, therefore, not only increases mould
Life-span, and reduce maintenance cost.
Brief description
Fig. 1 is the top view of lid plug injection mould.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is B-B sectional view in Fig. 1.
Fig. 4 is D-D sectional view in Fig. 1.
Fig. 5 is for C in Fig. 3 to partial view.
Fig. 6 is the top view of Hough fixed plate.
Fig. 7 is E-E sectional view in Fig. 6.
Fig. 8 is the front view of Hough.
Fig. 9 is the top view of Hough.
Figure 10 is F-F sectional view in Fig. 9.
Figure 11 is the structural representation of lid plug.
Figure 12 is the upward view of lid plug.
Specific embodiment
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As is illustrated by figs. 11 and 12, lid plug includes lid cock body 100, and the cross section of lid cock body 100 is circle, lid cock body 100
Inside there is bottom-up blind hole 500, be provided with the little of four circle distribution communicating with blind hole 500 at the top of lid cock body 100
Hole 600；Lid cock body 100 includes lid cock body 200 and lower cover cock body 300, and the external diameter of lower cover cock body 300 is less than upper lid cock body 200
External diameter, external screw thread 400 is provided with the excircle of lower cover cock body 300.
As shown in Figure 1 to Figure 3, lid plug injection mould includes die shoe plate 1, two support foots 2, support plate 3, core fixing plates
4th, Hough fixed plate 5, small-sized core fixed plate 6, upper clamping plate 7, half slide structure 8, small-sized core 8a, core 8b, gate bush 9, fixed
Position circle 10, guide pin bushing 11, guide pillar 12, the first ejector pin retaining plate 13, the second ejector pin retaining plate 14, the 3rd ejector pin retaining plate 15, push pedal
16th, push rod 17, cone push rod 18, sprue puller 19, back-moving spring 20, swing hook restoring board 21, swing hook 22, guide post 23 and spring
24.
The middle part of die shoe plate 1 is provided with ejection hole 101.Pass sequentially through from bottom to top bolt by die shoe plate 1, support foot 2,
Support plate 3, core fixing plate 4, Hough fixed plate 5 link together, and are formed with storage tank 201 between two support foots.
As shown in Figure 6 and Figure 7, Hough fixed plate 5 is provided with the containing cavity 501 of two up/down perforations, containing cavity 501 its
In two opposite faces be the bottom-up inclined-plane 5011 stretching out, be respectively equipped with gathering sill in the inclined-plane front and back end of containing cavity
5012；It is provided with up-small and down-big conical cavity 502 in the upper surface middle part of Hough fixed plate 5.
Small-sized core fixed plate 6 is bolted on the lower surface of upper clamping plate 7.Lower surface in small-sized core fixed plate 6
It is provided with the die cavity of lid cock body profile in molding, this die cavity is located at the top in thread forming chamber；Lower surface in small-sized core fixed plate 6
It is provided with the sub-runner 601 communicating with sprue and die cavity.The injection mould of this structure, in Hough fixed plate 5 and small-sized core fixed plate 6
Between formed die joint.
In the present embodiment, lid plug injection mould is a mould four cavity configuration, that is, once can four lid plugs of molding simultaneously.As figure
Shown in 1 and Fig. 2, it is provided with one group of half slide structure 8 in each accommodating intracavity, described half slide structure is joined by two symmetrical Houghs 81
Conjunction forms, and as shown in Fig. 8 to Figure 10, described Hough 81 includes the hypotenuse 811 and relative with hypotenuse with the cooperation of containing cavity inclined-plane
Straight flange 812, other two opposite ends be straight flange；It is provided with the gib block with gathering sill 5012 cooperation in the rear and front end of hypotenuse 811
813；The semicircle atrium 814 of top-down two, the inwall of semicircle atrium 814 are provided with the straight flange 812 of Hough
It is provided with screw thread, two Houghs corresponding semicircle atrium forms thread forming after two Hough combinations of same containing cavity
Chamber, has two thread forming chambeies in each group of half slide structure.Each Hough 81 is provided with horizontal pin-and-hole 815, every
It is provided with, between two Houghs of one group of half slide structure, the guide finger being installed to pin-and-hole 815.
In order to improve the intensity of small-sized core 8a, small-sized core 8a is ledge structure.The upper end of small-sized core 8a has boss, small-sized
The boss of core is located at the step in the hole of small-sized core fixed plate 6, and is kept out using upper clamping plate, prevents small-sized core axial-movement, little
The lower end of core 8a passes through small-sized core fixed plate 6 and extend in die cavity, and the inserting end of small-sized core 8a is used for the little of shaping cover plug
Hole 600.
Core 8b is fixed on core fixing plate 4, and the upper end of core 8b passes through core fixing plate 4, half slide structure 8, screw thread
Forming cavity simultaneously stretches out half slide structure in die cavity, and core 8b is used for the blind hole 500 of shaping cover plug.
The upper end of gate bush 9 has locating ring, and locating ring is arranged in upper clamping plate 7, and gate bush 9 is in upper clamping plate
Middle part pass through upper clamping plate 7 and small-sized core fixed plate 6, gate bush 9 has sprue, and sprue is communicated with sub-runner.Fixed
Position circle 10 is enclosed within locating ring, and centring ring 10 protrudes upper clamping plate 7, for positioning to the barrel of injection machine.
Guide pin bushing 11 is fixed in small-sized core fixed plate 6, and keeps out using upper clamping plate 7 is spacing.Guide pillar 12 is fixed on core
It extend in guide pin bushing 11 in fixed plate 4 and through Hough fixed plate 5, when small-sized core fixed plate 6 and upper clamping plate 7 are with respect to Hough
During fixed plate 5 motion, guide pin bushing 11 moves with respect to guide pillar 12, plays guide effect so that kinematic accuracy is high.
It is provided with the first ejector pin retaining plate 13 from bottom to up in storage tank 201, the second ejector pin retaining plate 14 and the 3rd pushes away
Bar fixed plate 15, the first ejector pin retaining plate 13 is fixedly connected with the second ejector pin retaining plate 14, the middle part of the first ejector pin retaining plate 13
Have first through hole 131, the second ejector pin retaining plate 14 is provided with the second through hole 132 communicating with first through hole 131.Push pedal 16 is passed through
Screw is held within the 3rd ejector pin retaining plate bottom in the second through hole 132.In the bottom of the first ejector pin retaining plate and lower mould
It is provided with supporting nail between seat board 1.
Each Hough is correspondingly provided with least two push rods.The upper end of push rod 17 pushes away through the second ejector pin retaining plate the 14, the 3rd
Bar fixed plate 15, support plate 3 are contacted with Hough 81 with core fixing plate 4, and the lower end of push rod 17 is limited by the first ejector pin retaining plate 13
Position is kept out.Cone push rod 18 is fixed with the 3rd ejector pin retaining plate 15, the upper end of cone push rod 18 is up big and down small taper,
The lower end of cone push rod passes through core 8b, support plate 3 to be fixed on the 3rd ejector pin retaining plate 15, is located at the 3rd in cone push rod
It is cased with back-moving spring 20 between ejector pin retaining plate and support plate.3rd ejector pin retaining plate 15 is fixed with through support plate 3, type
Core fixed plate 4, Hough fixed plate 5 sprue puller 19 corresponding to conical cavity 502, the lower end of sprue puller 19 is supported by push pedal 16 is spacing
Gear.
Fix swing hook restoring board 21 in the two opposite sides of the first ejector pin retaining plate 13, swing hook restoring board 21 includes fixed part
211 and the upwardly extending restoring board in self-fixed department outer end 212, fixed part 211 is fixed on the first ejector pin retaining plate 13, such as Fig. 5
Shown, restoring board 212 is provided with kidney slot 2121, has space between restoring board 212 and the first ejector pin retaining plate 13；Second
The inner side that the two opposite sides of ejector pin retaining plate 14 are located at restoring board 212 is hinged with swing hook 22, and the inside middle portion of swing hook 22 is provided with hook
Live the snap fit 221 of the 3rd ejector pin retaining plate 15, inside the upper end of swing hook 22, be provided with guiding surface 222；Support plate 3 is provided with
Skewed slot 301 with guiding surface cooperation；The guide post 24 extending into kidney slot is provided with swing hook 22, is located at pendulum on the guide bar
It is cased with spring 24 between hook and restoring board.As shown in figure 4, being fixed with wearing plate in the 3rd ejector pin retaining plate and snap fit contact position
25.
Using the method that above-mentioned injection mould fills in row injection mo(u)lding to lid it is.
（1）Matched moulds, during matched moulds, half slide structure resets 8 Dao containing cavity 501 in, and half slide structure 8 is in reseting procedure
In, due to being provided with guide finger, accordingly, it is capable to ensure two Hough energy synchronous resets of one group of half slide structure, thus after ensureing
Forming Quality.Meanwhile, push rod 17, cone push rod 18, sprue puller 19 reset, push rod 17, cone push rod 18, the reset of sprue puller 19
Realized by matched moulds and back-moving spring, swing hook 22 resets in the presence of spring 24, and snap fit 221 holding of swing hook 22
On the wearing plate 25 of the 3rd ejector pin retaining plate.
（2）Using injection machine to injecting material in the sprue of gate bush 9, the sprue through gate bush for the material, little
Sub-runner on core fixing plate enters in forming recess, and wherein forming recess is by die cavity, thread forming chamber, small-sized core, type
Core collectively forms.
（3）After the completion of injection, cooling.
（4）Mold ejecting cap plug 100, detailed process is：The push rod of injection machine through ejection hole 101, first through hole 131, the
Two through holes 132 are applied in push pedal 16.First mold, make upper clamping plate 7, small-sized core fixed plate 6, centring ring 10, gate bush 9 to
Upper motion, small-sized core fixed plate 6 is separated with Hough fixed plate 5, and the material in sprue disengages from sprue, upper lid cock body
200 disengage in die cavity；Then, give push pedal 16 thrust upwards using push rod, during push rod starts ejection, swing hook
22 snap fit 221 holding on wearing plate 25, now, the first ejector pin retaining plate 13, the second ejector pin retaining plate 14 and the 3rd push rod
Fixed plate 15 is together moved upwards, and push rod 17, cone push rod 18 and sprue puller 19 are together followed and moved upwards, and push rod promotes Hough
Structure 8 is moved upwards along gathering sill, meanwhile, the outside lateral movement of two Houghs of each group of half slide structure, the external thread part of lid plug
Divide and separate from thread forming chamber, cone push rod 18 promotes lid plug 100 to move upwards, sprue puller 19 promotion cast gate coagulates material and transports upwards
Move and depart from conical cavity 502；First ejector pin retaining plate 13, the second ejector pin retaining plate 14 and the 3rd ejector pin retaining plate 15 are being transported upwards
During dynamic, swing hook 22 swings out in the presence of skewed slot and guiding surface 222, after push rod moves to certain stroke, pendulum
The snap fit 221 of hook is partially disengaged wearing plate 25, that is, depart from the 3rd ejector pin retaining plate 15, now, the first ejector pin retaining plate 13 and the
Two ejector pin retaining plate 14 stop motion, the 3rd ejector pin retaining plate 15 continues up, and drives cone push rod 18 to move upwards
By lid plug ejection.
（5）After lid plug 100 is ejected, matched moulds, carry out injection mo(u)lding next time.
The injection mould of present embodiment and injection moulding process, due to being provided with half slide structure, and are provided with half slide structure
The thread forming chamber being formed by semicircle atrium, so, in injection molding process, the threaded portion of lid plug is in thread forming
Intracavity is formed；Simultaneously as being provided with first, second, third ejector pin retaining plate and using the first ejector pin retaining plate, push rod is solid
It is scheduled on the second ejector pin retaining plate, push rod is responsible for releasing Hough upwards and opening to both sides, be easy to cover the threaded portion energy of plug
Disengage from thread forming intracavity, and cone push rod and sprue puller are fixed on the 3rd ejector pin retaining plate, described cone push rod is born
Lid plug is released by duty, and sprue puller is responsible for releasing solidifying for runner material from conical cavity, thus realizing the demoulding；In addition, using pendulum
Hook restoring board, swing hook, guide post, spring and flume structure, when push rod can be made to start ejection, push rod, cone push rod and sprue puller
Move, after push rod moves to certain stroke, that is, when covering the threaded portion of plug and can disengage from half slide structure, swing hook departs from simultaneously
3rd ejector pin retaining plate, now, the first ejector pin retaining plate and the second ejector pin retaining plate stop moving upwards, the 3rd ejector pin retaining plate
Continue up, and drive cone push rod and sprue puller will cover plug ejection, the screw thread that can not only be filled in through lid using Double-ejection
Partly smoothly, reliably from thread forming intracavity depart from, and can be by the smoothly ejection of lid plug.Therefore, the injection mo(u)lding of the present invention
Do not need special injection machine, and mould structure is relatively simple.
, under the guide effect of gib block 813 and gathering sill 5011, two Houghs of every group of half slide structure can be certainly for half slide structure
Right opens so that the demoulding is more smooth.And can guarantee that two Houghs together move upwards and open using guide finger, in order to
Two Houghs keeping every group of half slide structure, in same level, meanwhile, also can make two Houghs of every group of half slide structure synchronously multiple
Position, can guarantee that formed precision next time.In addition, in injection molding process, the snap fit due to swing hook can be solid with the 3rd push rod
Fixed board frequently rubs, and when being provided with wearing plate, the 3rd ejector pin retaining plate can be prevented to be worn, and wearing plate is not easy
It is worn, and the cost changing wearing plate can be low, therefore, not only increases the life-span of mould, and reduce maintenance cost.
Claims (8)
1. lid plug injection mould, including die shoe plate, two support foots, support plate, core fixing plate, small-sized core fixed plate, upper moulds
Seat board, gate bush, centring ring, push rod, guide pin bushing and guide pillar；Die shoe plate is provided with ejection hole；The lower end of support foot is arranged on down
On die holder plate, between two support foots, it is formed with storage tank；Support plate is fixed on the upper end of support foot；Core fixing plate is fixed on and props up
On board；Small-sized core fixed plate is fixed on upper clamping plate；It is solid that the lower end of gate bush extend into small-sized core through upper clamping plate
In fixed board；Centring ring is fixed on upper clamping plate and is enclosed within gate bush upper end；Guide pin bushing is arranged in small-sized core fixed plate,
And the upper surface of guide pin bushing kept out by upper clamping plate；It is characterized in that：
It is provided with Hough fixed plate between core fixing plate and small-sized core fixed plate, Hough fixed plate is provided with two up/down perforations
Containing cavity, wherein two opposite faces of containing cavity are the bottom-up inclined-plane stretching out；It is provided with one group of Hough in accommodating intracavity
Structure, described half slide structure forms with two symmetrical Houghs, and described Hough includes and the cooperation of containing cavity inclined-plane
Hypotenuse and the straight flange relative with hypotenuse；Top-down semicircle atrium, the inwall of atrium are provided with the straight flange of Hough
It is provided with screw thread, the corresponding opening of two Houghs forms thread forming chamber after two Hough combinations of same containing cavity；
Core fixing plate is fixed with upper end through thread forming chamber through and out half slide structure core；
Die cavity corresponding with thread forming chamber position is provided with small-sized core fixed plate, small-sized core fixed plate is provided with lower end and stretches
Enter the small-sized core in die cavity；
It is provided with the first ejector pin retaining plate from bottom to up, the second ejector pin retaining plate and the 3rd ejector pin retaining plate in storage tank,
One ejector pin retaining plate and the second ejector pin retaining plate are fixedly connected, and the middle part of the first ejector pin retaining plate has first through hole, and second pushes away
Bar fixed plate is provided with the second through hole communicating with first through hole；The upper end of push rod passes through the second ejector pin retaining plate, the 3rd push rod solid
Fixed board, support plate are contacted with Hough with core fixing plate, and the lower end of push rod is kept out by the first ejector pin retaining plate；In the 3rd fixed plate
On be fixed with cone push rod, the upper end of cone push rod is up big and down small taper, and the lower end of cone push rod passes through core, support plate
It is fixed on the 3rd ejector pin retaining plate, cone push rod is located at and between the 3rd ejector pin retaining plate and support plate, is cased with reset bullet
Spring；
The lower section being located at gate bush sprue in Hough fixed plate is provided with up-small and down-big conical cavity, fixes in the 3rd push rod
It is fixed with plate through support plate, core fixing plate, Hough fixed plate the sprue puller corresponding to conical cavity；
Fix swing hook restoring board in the two opposite sides of the first ejector pin retaining plate, swing hook restoring board is included outside fixed part and self-fixed department
Hold upwardly extending restoring board, restoring board is provided with kidney slot, has space between restoring board and the first ejector pin retaining plate；?
The inner side that the two opposite sides of two ejector pin retaining plates are located at restoring board is hinged with swing hook, and the inside middle portion of swing hook is provided with and hooks the 3rd and push away
The snap fit of bar fixed plate, is provided with guiding surface inside the upper end of swing hook；Support plate is provided with oblique with guiding surface cooperation
Groove；The guide post extending into kidney slot is provided with swing hook, is located on the guide bar and between swing hook and restoring board, is cased with spring；
It is respectively equipped with gathering sill in the inclined-plane front and back end of containing cavity, the front and back end of Hough is provided with the gib block being placed in gathering sill.
2. according to claim 1 lid plug injection mould it is characterised in that：It is provided between two Houghs of every group of half slide structure and lead
To pin.
3. according to claim 1 lid plug injection mould it is characterised in that：It is located at second in the bottom of the 3rd ejector pin retaining plate
It is fixed with push pedal in through hole.
4. according to claim 1 lid plug injection mould it is characterised in that：Solid with snap fit contact position in the 3rd ejector pin retaining plate
Surely there is wearing plate.
5. a kind of method that using the injection mould described in claim 1, lid is filled in row injection is it is characterised in that include following walking
Suddenly：
（1）Matched moulds, during matched moulds, half slide structure resets to accommodating intracavity, and push rod, cone push rod, sprue puller reset, swing hook
Reset under the action of the spring, and the snap fit holding of swing hook is on the 3rd ejector pin retaining plate；
（2）Using injection machine to injecting material in gate bush, the sprue through gate bush for the material, sub-runner enter into molding
In die cavity, wherein forming recess is made up of die cavity, thread forming chamber, small-sized core, core；
（3）After the completion of injection, cooling；
（4）Mold ejecting cap plug, detailed process is：The push rod of injection machine is applied to the 3rd push rod through first through hole, the second through hole
In fixed plate, die sinking, so that upper clamping plate, small-sized core fixed plate, centring ring, gate bush is moved upwards, small-sized core fixed plate with
Hough fixed plate separates, and the material in sprue separates from sprue, and the upper end of lid plug disengages in die cavity；Push rod is given
Give thrust upwards, during push rod starts ejection, the snap fit holding of swing hook on the 3rd ejector pin retaining plate, now, the
One ejector pin retaining plate, the second ejector pin retaining plate and the 3rd ejector pin retaining plate together move upwards, push rod, cone push rod and sprue puller
Together follow and move upwards, push rod promotes half slide structure to move upwards, and meanwhile, two Houghs of each group of half slide structure are transported laterally
Dynamic, the male thread portion of lid plug separates from thread forming chamber, and cone push rod promotes lid plug to move upwards, and sprue puller promotes cast gate
Solidifying material moves upwards；First ejector pin retaining plate, the second ejector pin retaining plate and the 3rd ejector pin retaining plate, in motor process upwards, are put
Swing out in the presence of being hooked in skewed slot and guiding surface, after push rod moves to certain stroke, the snap fit of swing hook is partially disengaged
3rd ejector pin retaining plate, now, the first ejector pin retaining plate and the second ejector pin retaining plate stop motion, the 3rd ejector pin retaining plate continues
Move upwards, and drive cone push rod to move lid plug ejection upwards；
（5）After lid plug is ejected, matched moulds, carry out injection mo(u)lding next time；
It is respectively equipped with gathering sill in the inclined-plane front and back end of containing cavity, the front and back end of Hough is provided with the gib block being placed in gathering sill.
6. according to claim 5 lid plug injection mould injection molding cover plug method it is characterised in that：The two of every group of half slide structure
It is provided with guide finger between Hough.
7. the method for lid plug injection mould injection molding cover plug according to claim 5：It is located in the bottom of the 3rd ejector pin retaining plate
It is fixed with push pedal in second through hole.
8. the method for lid plug injection mould injection molding cover plug according to claim 5：Contact with snap fit in the 3rd ejector pin retaining plate
Place is fixed with wearing plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424120.4A CN104149279B (en) | 2014-08-27 | 2014-08-27 | Capping plug injection mould and capping plug injection moulding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424120.4A CN104149279B (en) | 2014-08-27 | 2014-08-27 | Capping plug injection mould and capping plug injection moulding method |
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| CN104149279A CN104149279A (en) | 2014-11-19 |
| CN104149279B true CN104149279B (en) | 2017-02-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105216249B (en) * | 2015-09-25 | 2018-04-17 | 亚新科噪声与振动技术（安徽）有限公司 | A kind of pivot pin covers Automated mould |
| TWI656957B (en) * | 2016-03-10 | 2019-04-21 | 鑫永銓股份有限公司 | Combined mold for making case |
| CN107984714A (en) * | 2017-12-05 | 2018-05-04 | 苏州联开精密模具有限公司 | A kind of new HALF blocks mold-opening structure |
| CN111673984A (en) * | 2020-05-17 | 2020-09-18 | 宁波正佳模塑有限公司 | Mould of half push pipe demoulding mechanism with pipe joint end cover edge covering |
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|---|---|---|---|---|
| CN2803681Y (en) * | 2005-05-10 | 2006-08-09 | 沈阳理工大学 | Plastic mould injector for side valve mould of top cap of oil storage cup |
| CN102039642A (en) * | 2009-10-23 | 2011-05-04 | 浙江亨达塑料模具有限公司 | Secondary ejection mechanism of car rearview mirror hull |
| CN203649363U (en) * | 2013-11-21 | 2014-06-18 | 牟维军 | Die for delay parting of swing hook |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1382650A1 (en) * | 1986-10-08 | 1988-03-23 | Ворошиловградский Проектно-Технологический Институт Машиностроения Им.Хху1 Съезда Кпсс | Mould for making polymeric articles |
| JPH02258217A (en) * | 1989-11-11 | 1990-10-19 | Z O Plast Kk | Mold for molded item with undercut |
| JP3706045B2 (en) * | 2001-06-13 | 2005-10-12 | 共和工業株式会社 | Mold opening method and apparatus thereof |
| JP5218537B2 (en) * | 2010-12-10 | 2013-06-26 | 第一精工株式会社 | Molded product take-out apparatus and molded product take-out method |
| CN203198190U (en) * | 2013-04-13 | 2013-09-18 | 宁波跃飞模具有限公司 | External fastener type double-ejection device |
| CN203712914U (en) * | 2013-11-22 | 2014-07-16 | 宁波拓普集团股份有限公司 | Inner and outer synchronous ejection curing mold for rubber bushing |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2803681Y (en) * | 2005-05-10 | 2006-08-09 | 沈阳理工大学 | Plastic mould injector for side valve mould of top cap of oil storage cup |
| CN102039642A (en) * | 2009-10-23 | 2011-05-04 | 浙江亨达塑料模具有限公司 | Secondary ejection mechanism of car rearview mirror hull |
| CN203649363U (en) * | 2013-11-21 | 2014-06-18 | 牟维军 | Die for delay parting of swing hook |
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