CN114734587B - Injection mold with secondary ejection and inclined ejection demoulding structure and control method thereof - Google Patents
Injection mold with secondary ejection and inclined ejection demoulding structure and control method thereof Download PDFInfo
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- CN114734587B CN114734587B CN202210373981.9A CN202210373981A CN114734587B CN 114734587 B CN114734587 B CN 114734587B CN 202210373981 A CN202210373981 A CN 202210373981A CN 114734587 B CN114734587 B CN 114734587B
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- 238000002347 injection Methods 0.000 title claims abstract description 58
- 239000007924 injection Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001746 injection moulding Methods 0.000 claims abstract description 35
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/305—Mounting of moulds or mould support plates
-
- 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
- B29C45/1742—Mounting of moulds; Mould supports
-
- 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
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to an injection mold with secondary ejection and adopting an inclined ejection demolding structure and a control method thereof, belonging to the technical field of injection molds. Has the characteristics of simple structure, good molding effect and high quality stability. Solves the problem that scrapping is caused by incomplete demoulding after injection molding. Shortens the molding period and meets the process requirement of taking the parts by using the mechanical arm.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold with secondary ejection and adopting an inclined ejection demolding structure and a control method thereof.
Background
The mold for producing the automobile safety airbag is positioned in the middle of the steering wheel, the plastic material is TPO, the performance of the TPO is rubber elasticity at normal temperature, the TPO has the characteristics of small density, large bending, high low-temperature shock resistance, easy processing, reusability and the like, and the TPO material integrates the performance characteristics of EPDM and PVC, and has the weather resistance, the low-temperature flexibility and the weldability of the latter. The front and rear mold cores of the product are used as inserts, a first mold is used, a needle valve hot runner system is adopted, and a JSW injection molding machine is used as a 350 ton injection molding machine.
At present, the traditional injection mold structure in the market is a common sliding block and inclined top structure and is internally drawn. If the product adopts a common mold structure, the product cannot be molded, or a product designer is required to change the structure, so that development time waste, cost increase and defective rate of an assembly part are caused.
Disclosure of Invention
The invention mainly solves the defects of complex structure, poor molding effect, long molding period and low quality stability in the prior art, and provides an injection mold with secondary ejection and adopting an inclined ejection demolding structure and a control method thereof, and the injection mold has the characteristics of simple structure, good molding effect and high quality stability. Solves the problem that scrapping is caused by incomplete demoulding after injection molding. The molding cycle is shortened, and meanwhile, the back-off of the product moves upwards along the surface of the insert and then leaves the insert, so that the process requirement of taking the insert by using a mechanical arm is met.
The technical problems of the invention are mainly solved by the following technical proposal:
an injection mold with a secondary ejection and adopting an inclined ejection demoulding structure comprises a B template, wherein the upper end of the B template is provided with a rear mold core which is nested and connected with the B template to be fixed, the upper end of the B template is provided with an A template which is movably pressed with the B template, the lower end of the A template is provided with a front mold core which is nested and connected with the A template to be fixed, a forced release product is arranged between the front mold core and the rear mold core, a product injection mold insert is arranged between the forced release product and the rear mold core, a hot runner which is communicated with the product injection mold insert is arranged in the A template, the lower extreme of B template be equipped with injection mould base, injection mould base and B template between be equipped with ejecting die carrier, ejecting die carrier lower part be equipped with movable roof, movable roof and B template between be equipped with ejection die carrier looks movable thimble baffle that cup joints, thimble baffle and product insert of moulding plastics between be equipped with the main ejector pin, the main ejector pin on be equipped with the oblique ejection drawing of patterns subassembly I that cup joints mutually of main ejector pin, main ejector pin rear end be equipped with product insert of moulding plastics mutually inlay card and peg graft oblique ejection drawing of patterns subassembly II.
Preferably, the inclined ejection demoulding assembly I comprises a wear-resistant block which is sleeved with a main ejector rod to limit and sleeved with a thimble guide plate to fix with screws, a main guide block is arranged between the wear-resistant block and a product injection mould insert, and a plurality of inclined ejector rods II which are sleeved with the main guide block and connected with the wear-resistant block in a sliding clamping manner are arranged between the wear-resistant block and the product injection mould insert.
Preferably, auxiliary guide blocks are arranged on two sides of the rear end of the main guide block, inclined ejector rods I connected with the wear-resistant blocks in a sliding clamping manner are arranged on the auxiliary guide blocks, and inclined ejector blocks I which are sleeved with the product injection molding inserts in a clamping manner and fixedly connected with the inclined ejector rods I in a bolt connection manner are arranged between the inclined ejector rods I and the product injection molding inserts.
Preferably, an inclined ejection block II which is in clamping and embedding connection with the product injection mold insert and is fixedly connected with the inclined ejection rod I through a bolt is arranged between the inclined ejection rod II and the product injection mold insert.
Preferably, the inclined ejection demoulding assembly II comprises an inclined ejection column, an inclined top plate integrated with the inclined ejection column is arranged between the inclined ejection column and the product injection mould insert, an inclined ejection seat connected with the inclined ejection column in a sliding limiting type is arranged at the lower end of the inclined ejection column, and inclined ejection positioning inserts integrated with the inclined top plate in a welding mode are arranged at two ends of the upper portion of the inclined ejection column.
Preferably, the lower part of the main ejector rod is provided with a main ejector rod connecting seat which is sleeved with the main ejector rod and is fixedly connected with the ejector pin guide plate through a sleeved screw. The ejector pin guide plate lower extreme be equipped with the stroke limiting plate, stroke limiting plate both ends and movable roof between be equipped with ejecting stopper, stroke limiting plate upper end and ejector pin guide plate between be equipped with ejecting stopper looks spacing contact and with the rubber retaining ring that the stroke limiting plate cup jointed mutually, rubber retaining ring and stroke limiting plate between be equipped with a plurality of equidistant annular distribution's springs.
Preferably, a guide rod penetrating through the movable top plate, the thimble guide plate and the travel limiting plate is arranged between the injection mold base and the B template, a plurality of side ejector rods which are fixedly connected with the movable top plate through screws and extend to the lower end of the strong stripping product are arranged on the left side and the right side of the main ejector rod, and a plurality of thimbles which are fixedly connected with the movable top plate through screws and extend to the lower end of the strong stripping product are arranged on the front side and the rear side of the main ejector rod.
Preferably, the two sides of the ejection die carrier are respectively provided with an oil cylinder connected and fixed with the movable top plate and the injection die base, the front end of the ejection die carrier is provided with an oil collecting block communicated with the oil cylinder through a pipeline, and the oil collecting block is provided with a plurality of oil joints. The upper end of the A template is provided with a hoisting panel which is fixedly connected with the A template through bolts.
An injection mold with secondary ejection and adopting an inclined ejection demoulding structure and a control method thereof, comprising the following operation steps:
the first step: assembling a front die of the die;
1) The A template is placed on a workbench, a frame opening faces upwards, a sealing ring is assembled at the bottom, then a front die core is hoisted by a crane and placed in the A template frame, the A template is fixed by screws, and then an assembly inclined building block is installed on the A template and fixed by screws.
2) Hoisting and turning over the A template and parts fixed in the A template by using a crane, then assembling a hot nozzle and a flow dividing plate of the hot runner, and fixing by using screws;
3) The panel is hoisted by a crane and placed on the A template, the pins are assembled, and then the pins are fixed by screws.
4) And finally, assembling the valve needle and the cylinder of the hot runner, and then fixing by using screws.
5) The water connectors on the A template are all installed, and the socket of the hot runner is also fixed on the A template by screws.
And a second step of: assembling a rear die of the die;
1) And placing the B template on a workbench, arranging a frame opening upwards, assembling a sealing ring at the bottom, hoisting a die core by using a crane, then arranging the die core into the B template, assembling an inclined building block on the B template, and fixing the inclined building block by using a screw.
2) The assembly runner insert is fixed in the rear mold core, and the B template is lifted by a crane to be erected on the workbench; and (3) loading the oblique top positioning insert into the rear die core, fixing the oblique top positioning insert by using a screw, and then fixedly mounting the injection molding insert of the product at the upper end of the rear die core.
3) And (3) fixedly mounting a guide block at the bottom of the B template and an oblique ejection guide block, and then assembling an oblique ejection demoulding assembly II consisting of an oblique top plate, an oblique ejection positioning insert, an oblique ejection column and an oblique ejection seat between the B template and the thimble guide plate.
4) The main ejector rod and the main ejector rod connecting seat are assembled between the B template and the ejector pin guide plate, and then the assembly process of the inclined ejector demolding assembly I consisting of the inclined ejector block I, the inclined ejector block II, the inclined ejector rod II, the main guide block, the auxiliary guide block, the wear-resisting block and the inclined ejector rod I is completed, and the wear-resisting block is fixedly connected with the rear mold core through screws.
5) The side ejector rod and the ejector pin are assembled, then the spring and the rubber retainer ring are fixed on the travel limiting plate, meanwhile, the travel limiting plate is fixed at the lower end of the ejector pin guide plate by screws, and the inclined ejector seat is sleeved with the travel limiting plate by screws, so that the side ejector rod and the ejector pin penetrate through the ejector pin guide plate and the travel limiting plate.
6) Then a movable top plate with an ejection limiting block and a guide rod are installed, then an ejection die frame and an injection die base are sleeved, and a B template, the ejection die frame and the injection die base are fixedly connected with each other through long screws.
7) The rear mould core part is hoisted by a travelling crane to be placed on the workbench in front, the oil cylinder is integrally arranged on the movable top plate and the injection mould base, the movable top plate is fixed by screws, and the oil connector is fixed on an oil collecting block communicated with the oil cylinder through a pipeline.
And a third step of: and in the injection molding process of the mold, the front mold and the rear mold are clamped, the mold is injected, then the pressure is maintained, then the mold is cooled, the front mold and the rear mold are opened after the cooling is finished, and the mold is ejected for the second time through the inclined top demolding assembly II of the inclined top demolding assembly I after the opening of the mold, so that the workpiece taking operation of the forced demolding product is finished.
Preferably, the mould is closed, the hot runner opens the needle valve plastic to enter a mould cavity closed area, the mould cavity closed area consists of a front mould core, a rear mould core, a product injection molding insert and an inclined ejection demoulding assembly II, the mould is pressurized, the hot runner needle valve is closed, the product is cooled, then the mould is opened, and the oil cylinder drives the movable top plate to drive the side ejector rod and the ejector pin to displace by a distance H1 to a stroke limiting plate, so that the first ejection of the forced release product is completed; then the movable top plate drives the thimble guide plate and the travel limiting plate to move upwards by a distance H, so that the main ejector rod, the inclined ejection assembly I and the inclined ejection assembly II eject the forced-stripping product for the second time.
The invention can achieve the following effects:
the invention provides an injection mold with secondary ejection and adopting an inclined ejection demoulding structure and a control method thereof, and compared with the prior art, the injection mold has the characteristics of simple structure, good forming effect and high quality stability. Solves the problem that scrapping is caused by incomplete demoulding after injection molding. The molding cycle is shortened, and meanwhile, the back-off of the product moves upwards along the surface of the insert and then leaves the insert, so that the process requirement of taking the insert by using a mechanical arm is met.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional elevation view of the structure of the present invention.
Fig. 3 is a side view in cross-section of the structure of the present invention.
Fig. 4 is a schematic structural view of the tilt-top stripper assembly i of the present invention.
Fig. 5 is a schematic diagram of the connection structure of the inclined top demolding assembly II and the product injection molding insert.
Fig. 6 is a schematic structural view of the tilt-top stripper assembly ii of the present invention.
In the figure: lifting panel 1, A template 2, B template 3, hydro-cylinder 4, ejecting die carrier 5, movable roof 6, injection mould base 7, oil collecting block 8, oil joint 9, strong stripping product 10, product injection mould insert 11, front mould core 12, back mould core 13, main ejector rod 14, ejector pin guide plate 15, travel limiting plate 16, ejecting limiting block 17, guide rod 18, side ejector rod 19, hot runner 20, oblique ejector assembly I21, ejector pin 22, oblique ejector assembly II 23, oblique ejector block I24, oblique ejector block II 25, oblique ejector rod II 26, main guide block 27, auxiliary guide block 28, wear-resisting block 29, oblique ejector rod I30, main ejector rod connecting seat 31, oblique ejector plate 32, oblique ejector positioning insert 33, oblique ejector rod 34, oblique ejector seat 35, spring 36 and rubber retainer ring 37.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Examples: as shown in figures 1-6, the injection mold with the secondary ejection and adopting the inclined ejection demoulding structure comprises a B template 3, wherein a rear mold core 13 which is nested and connected with the B template 3 is arranged at the upper end of the B template 3, an A template 2 which is movably pressed with the B template 3 is arranged at the upper end of the B template 3, and a hoisting panel 1 which is connected and fixed with the A template 2 by bolts is arranged at the upper end of the A template 2. The lower extreme of A template 2 is equipped with the front mould benevolence 12 that is nested to be connected fixedly with A template 2, be equipped with between front mould benevolence 12 and the back mould benevolence 13 and take off product 10 by force, be equipped with product injection mold insert 11 between product 10 and the back mould benevolence 13, be equipped with the hot runner 20 that is linked together with product injection mold insert 11 in the A template 2, the lower extreme of B template 3 is equipped with injection mold base 7, be equipped with ejecting die carrier 5 between injection mold base 7 and B template 3, ejecting die carrier 5 lower part is equipped with movable roof 6, ejecting die carrier 5 both sides all are equipped with movable roof 6, the hydro-cylinder 4 that is connected fixedly of injection mold base 7, ejecting die carrier 5 front end is equipped with the oil collecting block 8 that is linked together with hydro-cylinder 4 pipeline, be equipped with 2 oil connectors 9 on the oil collecting block 8. A thimble guide plate 15 which is movably sleeved with the ejection die frame 5 is arranged between the movable top plate 6 and the B die plate 3, a main ejector rod 14 is arranged between the thimble guide plate 15 and the product injection molding insert 11, and a main ejector rod connecting seat 31 which is sleeved with the main ejector rod 14 and fixedly connected with the thimble guide plate 15 through a sleeved screw is arranged at the lower part of the main ejector rod 14. The lower end of the thimble guide plate 15 is provided with a stroke limiting plate 16, an ejection limiting block 17 is arranged between the two ends of the stroke limiting plate 16 and the movable top plate 6, a rubber check ring 37 in limiting contact with the ejection limiting block 17 and sleeved with the stroke limiting plate 16 is arranged between the upper end of the stroke limiting plate 16 and the thimble guide plate 15, and 12 springs 36 which are distributed in an equidistant annular mode are arranged between the rubber check ring 37 and the stroke limiting plate 16. Guide rods 18 penetrating through the movable top plate 6, the ejector pin guide plate 15 and the travel limiting plate 16 are arranged between the injection mold base 7 and the B template 3, 6 side ejector rods 19 which are fixedly connected with the movable top plate 6 through screws and extend to the lower end of the strong stripping product 10 are arranged on the left side and the right side of the main ejector rod 14, and 4 ejector pins 22 which are fixedly connected with the movable top plate 6 through screws and extend to the lower end of the strong stripping product 10 are arranged on the front side and the rear side of the main ejector rod 14.
The main ejector rod 14 is provided with an inclined ejector demolding assembly I21 sleeved with the main ejector rod 14, the inclined ejector demolding assembly I21 comprises a wear-resistant block 29 sleeved with the main ejector rod 14 and fixed with a thimble guide plate 15 through screws, a main guide block 27 is arranged between the wear-resistant block 29 and the product injection molding insert 11, both sides of the rear end of the main guide block 27 are respectively provided with an auxiliary guide block 28, the auxiliary guide blocks 28 are respectively provided with an inclined ejector rod I30 connected with the wear-resistant block 29 in a sliding clamping manner, and an inclined ejector block I24 sleeved with the product injection molding insert 11 in a clamping manner and fixed with the inclined ejector rod I30 in a bolt connection manner is arranged between the inclined ejector rod I30 and the product injection molding insert 11. 3 inclined ejector rods II 26 which are sleeved with the main guide blocks 27 and are connected with the abrasion-resistant blocks 29 in a sliding clamping and embedding manner are arranged between the abrasion-resistant blocks 29 and the product injection molding insert 11. An inclined ejector block II 25 which is sleeved with the product injection molding insert 11 in a clamping and embedding way and is fixedly connected with the inclined ejector rod I30 in a bolt way is arranged between the inclined ejector rod II 26 and the product injection molding insert 11. The rear end of the main ejector rod 14 is provided with an inclined ejection demoulding component II 23 which is in clamping and inserting connection with the product injection mould insert 11. The inclined top demolding assembly II 23 comprises an inclined top column 34, an inclined top plate 32 integrated with the inclined top column 34 is arranged between the inclined top column 34 and the product injection molding insert 11, an inclined top seat 35 connected with the inclined top column 34 in a sliding limiting type inserting manner is arranged at the lower end of the inclined top column 34, and inclined top positioning inserts 33 integrated with the inclined top plate 32 in a welding manner are arranged at the two ends of the upper part of the inclined top column 34.
A control method of an injection mold with secondary ejection and adopting an inclined ejection demoulding structure comprises the following operation steps:
the first step: assembling a front die of the die;
1) The A template 2 is placed on a workbench, a frame opening faces upwards, a sealing ring is assembled at the bottom, then a front die core 12 is hoisted by a crane and placed in the frame of the A template 2, the A template is fixed by screws, and then an assembly oblique building block is installed on the A template 2 and fixed by screws.
2) The A-form 2 and the parts fixed in the A-form 2 are hoisted and turned over by a crane, and then the hot nozzle and the flow dividing plate of the hot runner 20 are assembled and fixed by screws.
3) The panel 1 is hoisted by a crane and placed on the A template 2, and the pins are assembled and then fixed by screws.
4) Finally, the valve pin and the cylinder of the hot runner 20 are assembled and then fixed by screws.
5) The water connectors on the A-form 2 are all assembled, and the socket of the hot runner 20 is also fixed on the A-form 2 by screws.
And a second step of: assembling a rear die of the die;
1) Placing the B template 3 on a workbench, arranging a frame opening upwards, assembling a sealing ring at the bottom, hoisting a rear die core 13 by a crane, arranging the die core into the B template 3, assembling an inclined building block on the B template 3, and fixing by a screw;
2) The assembly runner insert is fixed in the rear mold core 13, and the B template 3 is lifted by a crane to be erected on a workbench; the oblique top positioning insert 33 is installed in the rear die core 13 and fixed by screws, and then the upper end of the rear die core 13 is fixedly provided with the product injection molding insert 11.
3) The guide block at the bottom of the B template 3 is fixedly installed, and then an inclined ejection demoulding assembly II 23 consisting of an inclined top plate 32, an inclined ejection positioning insert 33, an inclined ejection column 34 and an inclined ejection seat 35 is assembled between the B template 3 and the thimble guide plate 15.
4) The main ejector rod 14 and the main ejector rod connecting seat 31 are assembled between the B template 3 and the ejector pin guide plate 15, and then the assembly process of the inclined ejector demoulding assembly I21 consisting of the inclined ejector block I24, the inclined ejector block II 25, the inclined ejector rod II 26, the main guide block 27, the auxiliary guide block 28, the abrasion-resistant block 29 and the inclined ejector rod I30 is completed, and the abrasion-resistant block 29 is fixedly connected with the rear mould core 13 through screws.
5) The side ejector rod 19 and the ejector pin 22 are assembled, then the spring 36 and the rubber retainer ring 37 are fixed on the travel limiting plate 16, meanwhile, the travel limiting plate 16 is fixed at the lower end of the ejector pin guide plate 15 by screws, and the inclined ejector seat 35 and the travel limiting plate 16 are sleeved and connected by screws, so that the side ejector rod 19 and the ejector pin 22 penetrate through the ejector pin guide plate 15 and the travel limiting plate 16.
6) Then the movable top plate 6 with the ejection limiting block 17 and the guide rod 18 are installed, then the ejection die frame 5 and the injection die base 7 are sleeved, and the B die plate 3, the ejection die frame 5 and the injection die base 7 among the long screws are fixedly connected.
7) The part of the crane handle 13 is lifted and placed on the workbench in front, the oil cylinder 4 is integrally arranged on the movable top plate 6 and the injection mold base 7, the movable top plate 6 is fixed by screws, and the oil joint 9 is fixed on the oil collecting block 8 which is communicated with the oil cylinder 4 through a pipeline.
And a third step of: and in the injection molding process of the mold, the front mold and the rear mold are clamped, the mold is injected, then the pressure is maintained, then the mold is cooled, the front mold and the rear mold are opened after the cooling is finished, and the mold is ejected for the second time through the inclined top demolding assembly I21 and the inclined top demolding assembly II 23 after the opening, so that the workpiece taking operation of the forced release product 10 is finished. The mold is closed, the hot runner 20 opens the needle valve plastic to enter a mold cavity closed area, the mold cavity closed area consists of a front mold core 12, a rear mold core 13, a product injection molding insert 11 and an inclined ejection demolding assembly II 23, the mold is pressurized, the hot runner needle valve is closed, the product cooling is completed, then the mold is opened, the movable top plate 6 is driven by the oil cylinder 4 to drive the side ejector rod 19 and the ejector pin 22 to displace a distance H1 to the stroke limiting plate 16, and the first ejection of the forced ejection product 10 is completed; then the movable top plate 6 drives the thimble guide plate 15 and the travel limiting plate 16 to move upwards by a distance H, so that the main ejector rod 14, the inclined ejection assembly I21 and the inclined ejection assembly II 23 eject the forced-stripping product 10 for the second time.
In conclusion, the injection mold with the secondary ejection and adopting the inclined ejection demoulding structure and the control method thereof have the characteristics of simple structure, good forming effect and high quality stability. Solves the problem that scrapping is caused by incomplete demoulding after injection molding. The molding cycle is shortened, and meanwhile, the back-off of the product moves upwards along the surface of the insert and then leaves the insert, so that the process requirement of taking the insert by using a mechanical arm is met.
The above embodiments are merely examples of the present invention, but the present invention is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present invention.
Claims (6)
1. An injection mold with secondary ejection and adopting an inclined ejection demoulding structure, which is characterized in that: including B template (3), B template (3) upper end be equipped with B template (3) mutually nested fixed back mould benevolence (13), B template (3) upper end be equipped with B template (3) mutually movable pressfitting's A template (2), A template (2) lower extreme be equipped with A template (2) mutually nested fixed front mould benevolence (12), front mould benevolence (12) and back mould benevolence (13) between be equipped with strong take-off product (10), strong take-off product (10) and back mould benevolence (13) between be equipped with product injection molding mold insert (11), A template (2) in be equipped with hot runner (20) that are linked together with product injection molding insert (11), B template (3) lower extreme be equipped with injection molding base (7), injection molding base (7) and B template (3) between be equipped with ejecting (5), ejecting die carrier (5) lower part be equipped with movable mould carrier (6), movable mould carrier (6) and B template (3) be equipped with product injection molding insert (14) and ejector pin (14) between ejector pin (14) and main ejector pin (14) of ejector pin (15), the rear end of the main ejector rod (14) is provided with an inclined ejector demolding assembly II (23) which is in clamping and inserting connection with the product injection molding insert (11);
the inclined ejection demoulding assembly I (21) comprises a wear-resistant block (29) which is sleeved and limited with a main ejector rod (14) and is sleeved and fixed with a thimble guide plate (15) through screws, a main guide block (27) is arranged between the wear-resistant block (29) and a product injection mould insert (11), a plurality of inclined ejector rods II (26) which are sleeved and connected with the main guide block (27) in a sliding and clamping manner are arranged between the wear-resistant block (29) and the product injection mould insert (11), and inclined ejector blocks II (25) which are sleeved and fixed with the product injection mould insert (11) through bolts and are arranged between the inclined ejector rods II (26) and the product injection mould insert (11) in a clamping manner; the two sides of the rear end of the main guide block (27) are respectively provided with an auxiliary guide block (28), the auxiliary guide blocks (28) are respectively provided with an inclined ejection rod I (30) which is connected with the wear-resistant block (29) in a sliding clamping manner, and an inclined ejection block I (24) which is sleeved with the product injection molding insert (11) in a clamping manner and is fixedly connected with the inclined ejection rod I (30) in a bolt connection manner is arranged between the inclined ejection rod I (30) and the product injection molding insert (11);
the inclined ejection demoulding assembly II (23) comprises an inclined ejection column (34), an inclined top plate (32) integrated with the inclined ejection column (34) is arranged between the inclined ejection column (34) and the product injection mould insert (11), an inclined ejection seat (35) connected with the inclined ejection column (34) in a sliding limiting type inserting manner is arranged at the lower end of the inclined ejection column (34), and inclined ejection positioning inserts (33) integrated with the inclined top plate (32) and welded and fixed at two ends of the upper portion of the inclined ejection column (34).
2. The injection mold with secondary ejection and adopting a tilt-top demolding structure as claimed in claim 1, wherein: the lower part of the main ejector rod (14) is provided with a main ejector rod connecting seat (31) which is sleeved with the main ejector rod (14) and is fixedly connected with the ejector pin guide plate (15) through a sleeved screw; the ejector pin guide plate (15) lower extreme be equipped with stroke limiting plate (16), stroke limiting plate (16) both ends and movable roof (6) between be equipped with ejecting stopper (17), stroke limiting plate (16) upper end and ejector pin guide plate (15) between be equipped with ejecting stopper (17) limit contact and with stroke limiting plate (16) cup joint rubber retaining ring (37), rubber retaining ring (37) and stroke limiting plate (16) between be equipped with a plurality of equidistant annular distribution's spring (36).
3. The injection mold with secondary ejection and adopting a tilt-top demolding structure as claimed in claim 2, wherein: the injection molding die is characterized in that a guide rod (18) penetrating through the movable top plate (6), the ejector pin guide plate (15) and the travel limiting plate (16) is arranged between the injection molding die base (7) and the B template (3), a plurality of side ejector pins (19) which are fixedly connected with the movable top plate (6) through screws and extend to the lower end of the forced-release product (10) are arranged on the left side and the right side of the main ejector pin (14), and a plurality of ejector pins (22) which are fixedly connected with the movable top plate (6) through screws and extend to the lower end of the forced-release product (10) are arranged on the front side and the rear side of the main ejector pin (14).
4. The injection mold with secondary ejection and using a tilt-top ejection structure according to claim 3, wherein: the two sides of the ejection die frame (5) are respectively provided with an oil cylinder (4) which is fixedly connected with the movable top plate (6) and the injection die base (7), the front end of the ejection die frame (5) is provided with an oil collecting block (8) which is communicated with the oil cylinder (4) through a pipeline, and the oil collecting block (8) is provided with a plurality of oil joints (9); the upper end of the A template (2) is provided with a hoisting panel (1) which is fixedly connected with the A template (2) through bolts.
5. The control method of the injection mold with the double ejection and adopting the inclined ejection and demolding structure as claimed in claim 4, which is characterized by comprising the following operation steps:
the first step: assembling a front die of the die;
1) Placing the A template (2) on a workbench, assembling a sealing ring at the bottom with an upward frame opening, then hoisting a front mold core (12) by a crane, placing the front mold core in the frame of the A template (2), fixing the front mold core by a screw, and then assembling an inclined building block to be installed on the A template (2) and fixing the inclined building block by the screw;
2) Hoisting and turning over the A template (2) and parts fixed in the A template (2) by using a crane, then assembling a hot nozzle and a flow dividing plate of the hot runner (20), and fixing by using screws;
3) Hoisting the panel (1) by using a crane, placing the panel on the A template (2), assembling pins, and fixing the pins by using screws;
4) Finally, assembling a valve needle and a cylinder of the hot runner (20), and then fixing by using screws;
5) The water connectors on the A template (2) are all arranged, and the socket of the hot runner (20) is also fixed on the A template (2) by screws;
and a second step of: assembling a rear die of the die;
1) Placing the B template (3) on a workbench, assembling a sealing ring at the bottom with an upward frame opening, hoisting by a crane, loading a die core (13) into the B template (3), assembling an inclined building block on the B template (3), and fixing by a screw;
2) The assembly runner insert is fixed in the rear mold core (13), and the B mold plate (3) is lifted by a crane to be erected on a workbench; the oblique top positioning insert (33) is arranged in the rear die core (13) and fixed by screws, and then the upper end of the rear die core (13) is fixedly provided with the product injection molding insert (11);
3) The guide block at the bottom of the B template (3) and the oblique ejection guide block are fixedly installed, and then an oblique ejection demoulding assembly II (23) consisting of an oblique top plate (32), an oblique ejection positioning insert (33), an oblique ejection column (34) and an oblique ejection seat (35) is assembled between the B template (3) and the thimble guide plate (15);
4) Assembling a main ejector rod (14) and a main ejector rod connecting seat (31) between a B template (3) and an ejector pin guide plate (15), and then completing the assembling process of an inclined ejector demoulding assembly I (21) consisting of an inclined ejector block I (24), an inclined ejector block II (25), an inclined ejector rod II (26), a main guide block (27), an auxiliary guide block (28), a wear-resisting block (29) and an inclined ejector rod I (30), wherein the wear-resisting block (29) is fixedly connected with a rear mould core (13) through screws;
5) Assembling the side ejector rod (19) and the ejector pin (22), then fixing a spring (36) and a rubber retainer ring (37) on the travel limiting plate (16), fixing the travel limiting plate (16) at the lower end of the ejector pin guide plate (15) by using screws, and sleeving an inclined ejector seat (35) with the travel limiting plate (16) by using screws, so that the side ejector rod (19) and the ejector pin (22) penetrate through the ejector pin guide plate (15) and the travel limiting plate (16);
6) Then a movable top plate (6) with an ejection limiting block (17) and a guide rod (18) are installed, then an ejection die frame (5) and an injection die base (7) are sleeved, and a B template (3) between long screws, the ejection die frame (5) and the injection die base (7) are fixedly connected;
7) Lifting a rear mold core (13) by a crane, placing the front surface of the rear mold core on a workbench, integrally mounting an oil cylinder (4) on a movable top plate (6) and an injection mold base (7), fixing the oil cylinder on the movable top plate (6) by screws, and fixing an oil joint (9) on an oil collecting block (8) communicated with a pipeline of the oil cylinder (4);
and a third step of: and in the injection molding process of the mold, the front mold and the rear mold are clamped, the mold is injected, then the pressure maintaining is carried out, then the mold is cooled, the front mold and the rear mold are opened after the cooling is finished, and the mold is ejected for the second time through the inclined ejection demolding assembly II (23) of the inclined ejection demolding assembly I (21) after the opening, so that the workpiece taking operation of the forced demolding product (10) is finished.
6. The control method of the injection mold with the secondary ejection and adopting the inclined ejection and demolding structure according to claim 5, wherein the control method comprises the following steps: the mold is closed, the hot runner (20) opens the needle valve plastic to enter a mold cavity closed area, the mold cavity closed area consists of a front mold core (12), a rear mold core (13), a product injection mold insert (11) and an inclined ejection demolding assembly II (23), the mold is pressurized, the hot runner needle valve is closed, the cooling of the product is completed, then the mold is opened, and the oil cylinder (4) drives the movable top plate (6) to drive the side ejector rod (19) and the ejector pin (22) to displace by a distance H1 to a stroke limiting plate (16), so that the first ejection of the forced ejection product (10) is completed; then the movable top plate (6) drives the thimble guide plate (15) and the travel limiting plate (16) to move upwards by a distance H, so that the main ejector rod (14), the inclined ejection demoulding assembly I (21) and the inclined ejection demoulding assembly II (23) eject the forced-stripping product (10) for the second time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210373981.9A CN114734587B (en) | 2022-04-11 | 2022-04-11 | Injection mold with secondary ejection and inclined ejection demoulding structure and control method thereof |
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| CN202210373981.9A CN114734587B (en) | 2022-04-11 | 2022-04-11 | Injection mold with secondary ejection and inclined ejection demoulding structure and control method thereof |
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