CN114407297B - Injection mold of automobile door plate and injection molding process thereof - Google Patents
Injection mold of automobile door plate and injection molding process thereof Download PDFInfo
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- CN114407297B CN114407297B CN202210037762.3A CN202210037762A CN114407297B CN 114407297 B CN114407297 B CN 114407297B CN 202210037762 A CN202210037762 A CN 202210037762A CN 114407297 B CN114407297 B CN 114407297B
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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
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
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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
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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
- B29C45/44—Removing or ejecting moulded articles for undercut articles
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold of an automobile door plate and an injection molding process thereof, and the injection mold comprises an upper mold component and a lower mold component, wherein the upper mold component is provided with an upper mold core, an upper clamping frame capable of moving longitudinally, a spacing block capable of moving transversely and a core pulling block capable of moving obliquely, the lower mold component is provided with a glue opening sleeve, a lower mold core, a lower clamping frame capable of moving longitudinally and a top plate component, convex cutters are arranged on the periphery of the lower mold core, a groove corresponding to the convex cutters is arranged on the upper mold core, the top plate component comprises a primary top plate and a secondary top plate, the primary top plate is provided with a square push rod and a hollow push pipe, and the secondary top plate is provided with a straight push rod and an inclined push rod. The invention has reasonable design and skillful structure, can form the automobile door plate and smoothly realize demoulding.
Description
Technical Field
The invention relates to the field of injection molds, in particular to an injection mold of an automobile door panel and an injection molding process thereof.
Background
Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting. An injection molding machine is a main molding apparatus for molding thermoplastic plastics or thermosetting materials into plastic products of various shapes by using a plastic molding die.
Fibrilia refers to fibers obtained from various bast plants, including bast fibers of the cortex of annual or perennial herbaceous dicotyledonous plants and leaf fibers of monocotyledonous plants. Bast fiber crops mainly include ramie, jute, ramie, hemp, flax, apocynum venetum, hibiscus hemp and the like.
Fibrilia material is very low in density and is therefore very suitable for the manufacture of light weight automotive parts. Referring to fig. 1, an automobile door panel 100 is shown, and an injection mold capable of forming a frame made of a hemp fiber material is required.
Disclosure of Invention
The invention aims to solve the technical problem of providing an injection mold of an automobile door panel and an injection molding process thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an injection mold of car door plant, includes mould assembly and lower mould assembly, last mould assembly be equipped with mould core, but longitudinal movement's last double-layered frame, lateral shifting's spacing block and the piece of loosing core of tilting removal, lower mould assembly be equipped with jiao kou cover, lower mould core, but longitudinal shifting's lower double-layered frame and roof subassembly, lower mould core be equipped with protruding sword all around, last mould core be equipped with the recess that corresponds with protruding sword, roof subassembly include roof and secondary roof, roof be equipped with square push rod and hollow ejector sleeve, the secondary roof be equipped with straight ejector pin and oblique ejector pin.
As a further improvement of the invention: the upper die assembly is provided with an upper air cylinder connected with the upper clamping frame, and the lower die assembly is provided with a lower air cylinder connected with the lower clamping frame. The upper cylinder can drive the upper clamping frame to move downwards for a preset distance, and the lower cylinder can drive the lower clamping frame to move upwards for a preset distance, so that the fiber sheet is clamped between the upper clamping frame and the lower clamping frame.
As a further improvement of the invention: the upper die assembly is provided with a transverse moving cylinder, the isolation block is fixedly provided with a connecting rod, and the connecting rod is connected with the transverse moving cylinder. When the upper die assembly and the lower die assembly are separated, the transverse moving cylinder drives the connecting rod and the isolating block to transversely move towards the upper die core, and then the isolating block reaches the edge of the upper die assembly but does not touch the upper die core; then the upper die assembly and the lower die assembly are slowly folded, the upper die assembly and the lower die assembly are separated to form a gap by the isolation block, and finally the upper die assembly and the lower die assembly are detached from the oil press and then transported to a warehouse for storage. The purpose of the setting of the isolation block is to separate a gap between the upper die assembly and the lower die assembly, and the convex knife and the groove are not folded at the moment, so that the convex knife and the groove cannot be damaged by shaking in the process of transporting the carrier for the die to a warehouse for storage if the carrier for the die is shaken. When the invention continues to perform injection molding production later, the upper die assembly and the lower die assembly are arranged on the oil press, and then the transverse cylinder drives the isolation block to be away from the edge of the upper die assembly.
As a further improvement of the invention: the lower die assembly is provided with a primary oil cylinder, the primary oil cylinder is connected with a primary top plate, the primary top plate is provided with a secondary oil cylinder, and the secondary oil cylinder is connected with a secondary top plate. The primary oil cylinder can drive the primary top plate to move upwards; the secondary oil cylinder can drive the secondary top plate to move upwards.
As a further improvement of the invention: the lower die assembly is provided with a primary cushion block and a secondary cushion block, the primary cushion block is provided with a primary separation groove, the secondary cushion block is provided with a secondary separation groove, the primary top plate is movably arranged in the primary separation groove, and the secondary top plate is movably arranged in the secondary separation groove. The primary top plate can move up and down in the primary separation groove; the secondary top plate can move up and down in the secondary separation groove.
As a further improvement of the invention: the primary cushion block is provided with a primary high-level switch and a primary low-level switch, and the primary top plate is provided with an inclined primary high-level slope and an inclined primary low-level slope; when the primary top plate moves, the primary high-position slope can touch the primary high-position switch, and the primary low-position slope can touch the primary low-position switch. When the primary top plate moves upwards, the primary top plate stops moving upwards after the primary high-position slope is contacted with the primary high-position switch; when the top plate moves downwards for one time, the top plate stops moving downwards for one time after the low-level slope and the low-level switch are contacted for one time; the primary high-level switch and the primary low-level switch play a limiting role, and the phenomenon that the primary top plate collides with part of parts in the lower die assembly due to the overlong moving distance is avoided.
As a further improvement of the invention: the secondary cushion block is provided with a secondary high-level switch and a secondary low-level switch, and the secondary top plate is provided with an inclined secondary high-level slope and an inclined secondary low-level slope; when the secondary top plate moves, the secondary high-position slope can touch the secondary high-position switch, and the secondary low-position slope can touch the secondary low-position switch. When the secondary top plate moves upwards, the secondary top plate stops moving upwards after the secondary high-level slope is contacted with the secondary high-level switch; when the secondary top plate moves downwards, the secondary top plate stops moving downwards after the secondary low-level slope is contacted with the secondary low-level switch; the secondary high-position switch and the secondary low-position switch play a limiting role, and the secondary top plate is prevented from colliding with part of parts in the lower die assembly due to the overlong moving distance.
As a further improvement of the invention: the upper die assembly is provided with a fixing groove and a moving hole, the fixing groove is provided with an inclined cylinder, the moving hole is provided with a movable sliding rod, and two ends of the sliding rod are respectively connected with the inclined cylinder and the core-pulling block. The slide bar can move in the movable hole, and oblique cylinder can drive slide bar, the piece slope of loosing core and remove, and the piece of loosing core is used for loosing core to the slope of finished product injection molding.
As a further improvement of the invention: the secondary top plate is fixedly provided with an inclined top base, the inclined top base is provided with an inclined slideway, a movable inclined guide block is arranged in the slideway, the inclined ejector rod is fixedly connected with the inclined guide block, the inclined guide block is provided with a movable positioning rod, and the positioning rod is fixedly connected with the lower die assembly; the inclined ejector rod is internally provided with a cooling pipeline, and the cooling pipeline is provided with a water inlet connector and a water outlet connector. The slide way is used for clamping the inclined guide block, the inclined ejector rod is fixed at the inclined guide block, and the upper end and the lower end of the positioning rod are fixed in the lower die assembly; when secondary roof rebound, the ejector pin can be along lower module's hole and tilt up removes to one side, and guide block not only rebound to one side this moment, guide block still can remove along the slide to one side, and the locating lever is still motionless all the time, and the locating lever has played the effect of supplementary direction to guide block to one side, and guide block both ends are fixed a position by ejector pin, guide block to one side respectively to one side. The cooling pipeline can cool the inclined ejector rod, cooling water enters the cooling pipeline and the inclined ejector rod from the water inlet connector, and the cooling water flows out from the water outlet connector after circulating in the inclined ejector rod.
An injection molding process of an automobile door panel is based on an injection mold of the automobile door panel,
the first step is as follows: heating the fiber sheet to 70-110 ℃ to soften the fiber sheet;
the second step is that: the heated fiber sheet is flatly placed at the upper end of the lower die assembly;
the third step: the upper die assembly moves downwards for a preset distance;
the fourth step: the upper clamping frame and the lower clamping frame are mutually folded to clamp the fiber sheet;
the fifth step: the upper die assembly continues to move downwards to be folded with the lower die assembly, the middle part of the fiber sheet is clamped in a cavity between the upper die core and the lower die core, and the convex knife is folded with the groove so that the convex knife cuts off the edge of the fiber sheet;
and a sixth step: thermoplastic rubber of the injection molding machine enters the lower mold core from the rubber opening sleeve, and the thermoplastic rubber is fused with the bottom surface of the fiber sheet after being cooled to form a finished injection molding piece;
the seventh step: the upper die assembly moves upward away from the lower die assembly;
eighth step: the primary top plate, the square push rod, the push pipe, the secondary top plate, the straight push rod and the inclined push rod move upwards simultaneously to jack up a finished injection molding part;
the ninth step: the primary top plate, the square push rod and the push pipe stop moving; the secondary top plate, the straight ejector rod and the inclined ejector rod continue to move upwards so that the finished injection molding piece is completely separated from the lower mold core;
the tenth step: and taking out the finished injection molding part and putting the finished injection molding part into a material frame, and taking out the cut fiber sheet and putting the cut fiber sheet into a waste product frame.
The invention has the advantages of reasonable design and skillful structure, can form the automobile door plate and smoothly realize demoulding.
Go up mold core, lower mold core and carry out compression molding to the fiber sheet, the thermoplastic resin enters into down the mold core from the jiao kou cover and moulds plastics (generally can set up the hot runner between jiao kou cover and lower mold core, can keep the suitable temperature of thermoplastic resin like this, does benefit to the thermoplastic resin and flows). The core-pulling block is used for obliquely pulling the core. The convex knife is used for cutting off the edge part of the fiber sheet material. After injection molding, the square push rod is used for ejecting a square hole of a finished injection molding piece, and the push pipe is used for ejecting a round hollow column of the finished injection molding piece; the straight ejector rod is used for ejecting a round hole or a plane of a finished product injection molding part, and the inclined ejector rod is used for pulling a core of an inwards concave structure of the finished product injection molding part.
The invention needs to use a vertical oil press and a horizontal injection molding machine, wherein an upper die assembly is arranged at the upper end of the oil press (the upper end is provided with a moving piston), a lower die assembly is arranged at the lower end of the oil press, and a glue injection port of the injection molding machine is aligned to a glue port sleeve. After the injection molding work is finished, the upper die assembly and the lower die assembly can be separated by the isolation block to form a gap, and the convex knife and the groove are not folded at the moment, so that the convex knife and the groove cannot be damaged by collision due to shaking in the process of transporting the mold to a warehouse by using the transport vehicle.
Drawings
FIG. 1 is a schematic illustration of a fiber sheet after it has been injection molded;
FIG. 2 is an exploded view of the present invention from a first perspective;
FIG. 3 is an exploded view of the present invention from a second perspective;
FIG. 4 is a schematic illustration of some of the components in the upper die assembly;
FIG. 5 is an exploded view of the lifter and associated parts;
FIG. 6 is an exploded schematic view of the top plate assembly;
FIG. 7 is an assembled schematic view of the top plate assembly;
FIG. 8 is a schematic view of the invention after clamping;
fig. 9 is a schematic cross-sectional view of the mold closed according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-9: the utility model provides an injection mold of car door plant, including last mould subassembly 200 and lower mould subassembly 600, it is equipped with mold core 220 to go up mould subassembly 200, but the last clamp frame 300 of longitudinal movement, lateral shifting's spacing block 1, and the piece 2 of loosing core of tilting movement, lower mould subassembly 600 is equipped with jiao kou cover 603, lower mould core 610, but longitudinal shifting's lower clamp frame 400 and roof subassembly 500, be equipped with protruding sword 611 around the lower mould core 610, it is equipped with the recess 221 that corresponds with protruding sword 611 to go up mould core 220, roof subassembly 500 includes primary roof 510 and secondary roof 520, primary roof 510 is equipped with square push rod 512 and hollow ejector pin 513, secondary roof 520 is equipped with straight ejector pin 521 and oblique ejector pin 3.
The upper mold assembly 200 is provided with an upper cylinder 210 connected to the upper clamping frame 300, and the lower mold assembly 600 is provided with a lower cylinder 620 connected to the lower clamping frame 400.
The upper die assembly 200 is provided with a transverse moving cylinder 12, the isolation block 1 is fixedly provided with a connecting rod 11, and the connecting rod 11 is connected with the transverse moving cylinder 12.
The lower mold assembly 600 is provided with a primary cylinder 630, the primary cylinder 630 is connected with a primary top plate 510, the primary top plate 510 is provided with a secondary cylinder 511, and the secondary cylinder 511 is connected with a secondary top plate 520.
The lower die assembly 600 is provided with a primary cushion block 604 and a secondary cushion block 601, the primary cushion block 604 is provided with a primary separation groove 605, the secondary cushion block 601 is provided with a secondary separation groove 602, the primary top plate 510 is movably arranged in the primary separation groove 605, and the secondary top plate 520 is movably arranged in the secondary separation groove 602.
The primary cushion block 604 is provided with a primary high-position switch 644 and a primary low-position switch 643, and the primary top plate 510 is provided with an inclined primary high-position slope 514 and an inclined primary low-position slope 515; when the top plate 510 moves, the primary high ramp 514 may contact the primary high switch 644, and the primary low ramp 515 may contact the primary low switch 643.
The secondary cushion block 601 is provided with a secondary high-level switch 642 and a secondary low-level switch 641, and the secondary top plate 520 is provided with an inclined secondary high-level slope 522 and an inclined secondary low-level slope 523; when the secondary top plate 520 moves, the secondary high-level ramp 522 may touch the secondary high-level switch 642, and the secondary low-level ramp 523 may touch the secondary low-level switch 641.
The upper die assembly 200 is provided with a fixing groove 230 and a movable hole 231, the fixing groove 230 is provided with an inclined cylinder 22, the movable hole 231 is provided with a movable sliding rod 21, and two ends of the sliding rod 21 are respectively connected with the inclined cylinder 22 and the core-pulling block 2.
The secondary top plate 520 is fixedly provided with an inclined top base 6, the inclined top base 6 is provided with an inclined slide way 61, a movable inclined guide block 4 is arranged in the slide way 61, the inclined top rod 3 is fixedly connected with the inclined guide block 4, the inclined guide block 4 is provided with a movable positioning rod 5, and the positioning rod 5 is fixedly connected with the lower die assembly 600; a cooling pipeline 31 is arranged in the oblique ejector rod 3, and the cooling pipeline 31 is provided with a water inlet connector 32 and a water outlet connector 33.
Fig. 1 shows the fiber sheet 101 and the finished injection-molded part 100 after injection molding, where the finished injection-molded part 100 is disconnected from the fiber sheet 101 at the periphery.
The following is an injection molding process for an automotive door panel,
the first step is as follows: the fiber sheet 101 is heated to 70 to 110 degrees to soften the fiber sheet 101. The fiber sheet 101 is generally made of a hemp fiber material, and may be made of other materials having similar properties (generally, a binder is mixed in the fiber sheet 101 in advance, and the binder is gradually solidified after being heated, so that the fiber sheet 101 can maintain a pressed shape after hot press molding), and the fiber sheet 101 is softened after being heated, so that the fiber sheet 101 is easily press-molded.
The second step is that: the heated fiber sheet 101 is placed flat on top of the lower die assembly 600. The flatly placed fiber sheet 101 is less likely to wrinkle during the in-mold molding process.
The third step: the upper die assembly 200 moves downward by a predetermined distance. At this point, the upper and lower mold assemblies 200 and 600 are closer but not closed.
The fourth step: the upper and lower clamping frames 300 and 400 are folded to clamp the fiber sheet 101.
The fifth step: the upper die assembly 200 continues to move downward to close with the lower die assembly 600, the middle portion of the fiber sheet 101 is sandwiched in the cavity between the upper die core 220 and the lower die core 610, and the convex blade 611 closes with the groove 221 so that the convex blade 611 cuts the edge portion of the fiber sheet 101. The upper clamping frame 300 and the lower clamping frame 400 are respectively driven by the upper cylinder 210 and the lower cylinder 620 to clamp the edge part of the fiber sheet 101, but the clamping force of the upper cylinder 210 and the lower cylinder 620 is not too large, mainly in order to keep the fiber sheet 101 flat, so that the fiber sheet 101 can still slowly move in the mold when the fiber sheet 101 is gradually extruded by the upper mold core 220; after the mold is closed, the middle portion of the fiber sheet 101 is press-molded by the upper core 220 and the lower core 610, and the edge portion of the fiber sheet 101 is cut by the convex blade 611.
And a sixth step: the thermoplastic resin of the injection molding machine enters the lower mold core 610 from the rubber port sleeve 603, and the thermoplastic resin is cooled and then fused with the bottom surface of the fiber sheet 101 to form the finished injection molding part 100.
The seventh step: upper die assembly 200 moves upwardly away from lower die assembly 600.
Eighth step: the primary top plate 510, the square push rod 512, the push pipe 513, the secondary top plate 520, the straight ejector rod 521 and the inclined ejector rod 3 move upwards simultaneously to jack up the finished injection molding part 100.
The ninth step: the primary top plate 510, the square push rod 512 and the push pipe 513 stop moving; the secondary top plate 520, the straight ejector pins 521 and the inclined ejector pins 3 continue to move upwards so that the finished injection molded part 100 is completely separated from the lower mold core 610.
The tenth step: the finished injection molded part 100 is taken out and put into a material frame, and the cut fiber sheet 101 is taken out and put into a waste frame.
The automobile door plate (i.e. the finished injection molding part 100) formed by the invention takes fibrilia materials as a framework part and takes plastics as an auxiliary material part. The fibrilia material is made of organic matters and can be naturally degraded, so the environment-friendly performance is better. The wall thickness of the fiber sheet 101 can be 1.0 to 1.5 mm, so that the finished injection molding part 100 has thinner wall thickness and light weight. After fibrilia and plastics combine, the buckle structure and the rib of car door plant can be gone out to the plastics part shaping, and the rib can increase the bulk strength of car door plant.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (7)
1. An injection mold for automobile door plates comprises an upper mold component and a lower mold component, and is characterized in that the upper mold component is provided with an upper mold core, an upper clamping frame capable of moving longitudinally, a spacer block capable of moving transversely and a core pulling block capable of moving obliquely, the lower mold component is provided with a glue opening sleeve, a lower mold core, a lower clamping frame capable of moving longitudinally and a top plate component, convex cutters are arranged on the periphery of the lower mold core, a groove corresponding to the convex cutters is formed in the upper mold core, the top plate component comprises a primary top plate and a secondary top plate, the primary top plate is provided with a square push rod and a hollow push pipe, and the secondary top plate is provided with a straight push rod and an inclined push rod;
the upper die assembly is provided with an upper air cylinder connected with the upper clamping frame, and the lower die assembly is provided with a lower air cylinder connected with the lower clamping frame;
the lower die assembly is provided with a primary oil cylinder, the primary oil cylinder is connected with a primary top plate, the primary top plate is provided with a secondary oil cylinder, and the secondary oil cylinder is connected with a secondary top plate;
the upper die assembly is provided with a fixed groove and a movable hole, the fixed groove is provided with an inclined cylinder, the movable hole is provided with a movable slide rod, and two ends of the slide rod are respectively connected with the inclined cylinder and the core-pulling block.
2. The injection mold for automobile door panels as claimed in claim 1, wherein the upper mold assembly is provided with a traversing cylinder, the spacer block is fixedly provided with a connecting rod, and the connecting rod is connected with the traversing cylinder.
3. The injection mold for automotive door panels as claimed in claim 1, wherein said lower mold assembly has a primary cushion block and a secondary cushion block, said primary cushion block has a primary spacer, said secondary cushion block has a secondary spacer, said primary top plate is movably disposed in said primary spacer, and said secondary top plate is movably disposed in said secondary spacer.
4. The injection mold for the door panel of the automobile as claimed in claim 3, wherein the primary cushion block is provided with a primary high-level switch and a primary low-level switch, and the primary top plate is provided with an inclined primary high-level slope and an inclined primary low-level slope; when the primary top plate moves, the primary high-position slope can touch the primary high-position switch, and the primary low-position slope can touch the primary low-position switch.
5. The injection mold for the door panel of the automobile as claimed in claim 3, wherein the secondary cushion block is provided with a secondary high-level switch and a secondary low-level switch, and the secondary top plate is provided with an inclined secondary high-level slope and an inclined secondary low-level slope; when the secondary top plate moves, the secondary high-position slope can touch the secondary high-position switch, and the secondary low-position slope can touch the secondary low-position switch.
6. The injection mold for the automobile door plate according to claim 1, wherein the secondary top plate is fixedly provided with an inclined top base, the inclined top base is provided with an inclined slide way, a movable inclined guide block is arranged in the slide way, the inclined ejector rod is fixedly connected with the inclined guide block, the inclined guide block is provided with a movable positioning rod, and the positioning rod is fixedly connected with the lower die assembly; the inclined ejector rod is internally provided with a cooling pipeline, and the cooling pipeline is provided with a water inlet connector and a water outlet connector.
7. An injection molding process of an automobile door panel based on the injection mold of the automobile door panel according to any one of claims 1 to 6,
the first step is as follows: heating the fiber sheet to 70-110 ℃ to soften the fiber sheet;
the second step: the heated fiber sheet is flatly placed at the upper end of the lower die assembly;
the third step: the upper die assembly moves downward by a predetermined distance;
the fourth step: the upper clamping frame and the lower clamping frame are mutually folded to clamp the fiber sheet;
the fifth step: the upper die assembly continues to move downwards to be folded with the lower die assembly, the middle part of the fiber sheet is clamped in a cavity between the upper die core and the lower die core, and the convex knife is folded with the groove so that the convex knife cuts off the edge of the fiber sheet;
and a sixth step: thermoplastic resin of the injection molding machine enters the lower mold core from the rubber opening sleeve, and the thermoplastic resin is cooled and then fused with the bottom surface of the fiber sheet to form a finished injection molding part;
the seventh step: the upper die assembly moves upward away from the lower die assembly;
eighth step: the primary top plate, the square push rod, the push pipe, the secondary top plate, the straight push rod and the inclined push rod move upwards simultaneously to jack up a finished injection molding part;
the ninth step: the primary top plate, the square push rod and the push pipe stop moving; the secondary top plate, the straight ejector rod and the inclined ejector rod continue to move upwards so that the finished injection molding piece is completely separated from the lower mold core;
the tenth step: and taking out the finished injection molding part and then putting the finished injection molding part into a material frame, and taking out the cut fiber sheet and then putting the cut fiber sheet into a waste product frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210037762.3A CN114407297B (en) | 2022-01-13 | 2022-01-13 | Injection mold of automobile door plate and injection molding process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210037762.3A CN114407297B (en) | 2022-01-13 | 2022-01-13 | Injection mold of automobile door plate and injection molding process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114407297A CN114407297A (en) | 2022-04-29 |
| CN114407297B true CN114407297B (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210037762.3A Active CN114407297B (en) | 2022-01-13 | 2022-01-13 | Injection mold of automobile door plate and injection molding process thereof |
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| CN115320034A (en) * | 2022-08-05 | 2022-11-11 | 东风汽车集团股份有限公司 | Straight-ejection inclined-ejection mechanism with inclined ejection and injection mold |
| CN116901355A (en) * | 2023-09-08 | 2023-10-20 | 常源科技（天津）有限公司 | Injection mold of light-weight automobile door panel decoration strip |
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