CN117416019B - High-strength automobile structural part demoulding device and method thereof - Google Patents
High-strength automobile structural part demoulding device and method thereof Download PDFInfo
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- CN117416019B CN117416019B CN202311703542.0A CN202311703542A CN117416019B CN 117416019 B CN117416019 B CN 117416019B CN 202311703542 A CN202311703542 A CN 202311703542A CN 117416019 B CN117416019 B CN 117416019B
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000013016 damping Methods 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 11
- 239000012141 concentrate Substances 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000006082 mold release agent Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/58—Applying the releasing agents
-
- 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)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of injection molds and provides a high-strength automobile structural member demoulding device and a method thereof, wherein the high-strength automobile structural member demoulding device comprises an injection mold, a fixed part and a movable part, wherein the fixed part is fixedly arranged, the movable part is fixedly connected with the movable mold through a guide post, and a limiting clamping plate and a damping reset mechanism are arranged on the left side of the movable mold; the demolding mechanism comprises two groups of ejector pins which are arranged in the movable mold in a sealing way. The device utilizes damping canceling release mechanical system and No. two spring cooperation to promote the telescopic column "pop out" the inner wall of thimble, utilizes telescopic column internally mounted's intake pipe and feed liquor pipe, concentrates high-pressure air current, liquid release agent in the narrow and small drainage groove in space, and auxiliary release agent materialization to reach the purpose at the inside die cavity automatic spraying release agent of movable mould, through the automation and the integration that make release agent spraying, improved the work efficiency of device.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a high-strength automobile structural part demolding device and a method thereof.
Background
The high-strength automobile structural part is mainly formed by plastic integral injection molding, and mainly meets the special requirements of automobiles, and the integral injection molded automobile structural part has the advantages of high strength, low cost, portability and durability; when the injection mold works, the mold is closed, high-temperature molten plastic raw materials are injected into a cavity formed by closing the mold by using an injection molding machine to the upper movable mold, after the injection molding machine cools and forms, the movable mold provided with the cavity is generally moved away, and under the passive limiting and pressurizing of the ejector pin, the formed automobile structural part is ejected, so that the discharging is completed; in the prior art, in order to improve the demolding efficiency of an automobile structural member, a mold release agent is generally sprayed on a cavity after injection molding is finished every time, but the mold release agent spraying of the existing injection mold cannot be integrally installed on the mold itself, and a special structure is designed for spraying the mold release agent before each mold closing, so that the mold release agent does not meet the requirement of high efficiency of one-time injection molding of the injection mold, and therefore, the invention aims to design a high-strength automobile structural member demolding device and a method thereof.
Disclosure of Invention
The invention provides a high-strength automobile structural part demoulding device and a method thereof, which solve the problem that the demoulding agent spraying cannot be integrated in the related technology.
The technical scheme of the invention is as follows:
a high-strength demoulding device for a structural member of an automobile comprises
The injection mold consists of a movable mold, a fixed part and a movable part, wherein the fixed part is fixedly arranged, the movable part is fixedly connected with the movable mold through a guide post, and a limiting clamping plate and a damping reset mechanism are arranged on the left side of the movable mold;
the demolding mechanism comprises two groups of ejector pins which are hermetically arranged in the movable mold, wherein a movable plate is fixedly arranged on the outer surface of each ejector pin, a first spring is movably sleeved in each ejector pin, a telescopic column and a second spring are movably sleeved in each ejector pin, a liquid discharge groove is formed in the outer surface of each telescopic column, an air inlet pipe is arranged on the inner wall of each telescopic column, a liquid inlet pipe is connected with the left end of each telescopic column, an air outlet block is fixedly arranged on the outer surface of each air inlet pipe, and an air passage is formed in each air outlet block;
the damping reset mechanism comprises a damping rod and a second permanent magnet, the first permanent magnet is fixedly connected to the telescopic end of the damping rod through a connecting plate, the first permanent magnet is adapted to be arranged on the left side of the inner wall of the thimble and is magnetically attracted with the second permanent magnet, and the second permanent magnet is fixedly connected with the telescopic column.
Optionally, a rubber sleeve is installed on one side of the inner wall of the thimble, which faces the movable mould, and the rubber sleeve is arranged on the outer surface of the telescopic column in an interference fit manner.
Optionally, the both ends of No. two springs are connected with thimble and flexible post respectively, no. two springs are stretched to be set up in the inner wall of thimble, the both ends of No. one springs are connected with movable mould and movable mould respectively, no. one springs are compressed to be set up between movable mould and movable mould.
Optionally, the cross section shape of spacing cardboard is "L" shape, the limiting extrusion contact of medial surface of movable plate and spacing cardboard, the middle part of mounting is provided with limit stop to with the limiting extrusion contact of movable plate.
Optionally, a sealing ring is glued on the outer side of one end of the telescopic column connected with the second permanent magnet block, and the sealing ring is made of a rubber block.
Optionally, the air outlet blocks are arranged into four groups and are distributed on the outer surface of the air inlet pipe at equal angles, the shape of the air outlet blocks is a truncated cone shape, and the outer surfaces of the air outlet blocks are in equal clearance fit with the inner wall of the liquid discharge groove.
Optionally, the flexible post is "T" shape structure towards one side of movable mould, and flexible post and the right-hand member of thimble keep the adaptation combined state.
Optionally, the right-hand member of flexible post keeps flushing with the die cavity inner wall of movable mould through spacing cardboard, movable plate and thimble under the compound mode, the right-hand member of flexible post is interference fit with the inside of movable mould.
A demolding method of a high-strength automobile structural part is applied to a demolding device of the high-strength automobile structural part, and comprises the following steps:
the moving part drives the movable mould to move towards the fixed mould and be in extrusion contact with the fixed mould to form a sealed cavity, and the injection molding machine injects high-temperature molten plastic raw materials into the cavity formed by the fixed mould and the movable mould and cools and forms the plastic raw materials;
the die is opened, the moving piece drives the movable die to move leftwards, and drives the movable die, the limiting clamping plate and the moving plate to reset;
the movable die drives the movable plate and the ejector pin to move leftwards under the action of the movable piece and contact with the damping reset mechanism, then extrusion force is generated, the movable plate is stopped in a limiting way and moves rightwards relative to the movable die with the ejector pin, and the telescopic column is driven to apply pressure to a formed workpiece;
then, the movable mould drives the damping reset mechanism to integrally move leftwards, the telescopic end of the damping rod stretches leftwards and gradually drives the first permanent magnet to move leftwards, at the moment, the second permanent magnet is driven rightwards by the telescopic column, so that the magnetic attraction force of the first permanent magnet and the second permanent magnet is gradually overcome, the first permanent magnet and the second permanent magnet are suddenly separated, the whole telescopic column is sprung out of the thimble by the resilience force generated by stretching of the second spring, and therefore a workpiece is completely sprung out, and demoulding is completed;
at the moment, high-pressure air flow enters from the air inlet pipe, and outputs high-pressure air flow to the cavity of the movable mould through the air channel, so that impurities on the inner wall are removed, the liquid release agent flows into the liquid discharge groove along the inner wall of the liquid inlet pipe, the high-pressure air flow flowing through the air inlet pipe is instantaneously broken and atomized, continuously flows out through the outer opening of the liquid discharge groove, and then is uniformly sprayed to the inner wall of the cavity of the movable mould;
finally, the movable die is moved to the right through the moving piece, so that the moving plate and the ejector pin are reset, the telescopic column is reset under the action of the second spring, the first permanent magnet block and the second permanent magnet block are contacted again and are connected in a magnetic attraction mode, and the telescopic column drives the inner wall of the movable die again.
The working principle and the beneficial effects of the invention are as follows:
1. the device redesigns the thimble, give its spraying release agent's function, draw the shell design through being provided with the thimble inside, and cup joint the telescopic column in the inside of thimble, utilize the "T" shape structure of telescopic column tip to cup joint the pressure fit with the thimble, guarantee the perfect adaptation of telescopic column and movable mould inner wall die cavity, afterwards, utilize damping canceling release mechanical system and No. two spring cooperations to promote the telescopic column "pop out" the inner wall of thimble, utilize telescopic column internally mounted's intake pipe and feed liquor pipe, concentrate high-pressure air current, liquid release agent in the narrow and small liquid drain groove in space, assist release agent materialization, thereby reach the purpose at the inside die cavity automatic spraying release agent of movable mould, through the automation and the integration that make the release agent spraying, the work efficiency of device has been improved.
2. Simultaneously, utilize the balanced auxiliary device drawing of patterns ejection of compact of atress of damping canceling release mechanical system and No. two springs, when the movable mould moves leftwards under the effect of moving the piece, and drive the bump stop extrusion contact of movable plate and mounting, make movable plate and thimble whole move rightwards for the movable mould, at this moment, the damping pole drives No. one permanent magnetism piece and still moves leftwards, consequently, the flexible end of damping pole will stretch out, just break away from after the magnetic attraction of No. one permanent magnetism piece and No. two permanent magnetism pieces is overcome by damping pole and No. two springs completely, at this moment, no. two springs just utilize elasticity to drive flexible post "pop out" the inside of thimble, thereby supplementary work piece secondary quick unloading that is drawing of patterns, thereby improved drawing of patterns efficiency.
3. Finally, the damping characteristic of the damping rod is utilized to maintain the set position of the first permanent magnet block and the second permanent magnet block when the movable mold is reset and returns to the mold closing state from the mold releasing state, at the moment, the movable mold and the fixed mold are closed and exert auxiliary pressure on the telescopic column, the telescopic column can drive the second permanent magnet block to move to a position which is separated from the first permanent magnet block and is more similar to the first permanent magnet block, the whole moving plate is pushed to the left by the first spring to reset, the first permanent magnet block and the second permanent magnet block are gradually and repeatedly adsorbed and connected together due to the magnetic attraction force of the first permanent magnet block and the second permanent magnet block along with the distance between the second permanent magnet block and the first permanent magnet block being more and more similar, the second spring is re-stretched, and the damping rod is moved by the first permanent magnet block and is pulled back to reset, and the original state of the telescopic end of the damping rod is maintained.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic elevation cut-away view of the structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 2B in accordance with the present invention;
FIG. 5 is a schematic diagram showing the separation of the moving mold, the fixed member and the movable member of the present invention;
FIG. 6 is a schematic diagram of the positional relationship of the stripping mechanism and the damped reset mechanism of the present invention;
FIG. 7 is a schematic diagram of the separation of the stripping mechanism and the dampened return mechanism of the present invention;
FIG. 8 is a schematic side view of a limiting clamp plate, a moving plate, a thimble and a damping return mechanism of the present invention;
FIG. 9 is a schematic view of the inside of the thimble of the present invention in cross-section.
In the figure: 1. a movable mold; 2. a fixed mold; 3. a fixing member; 4. a moving member; 5. a limiting clamping plate; 6. a moving plate; 7. a thimble; 8. a damping reset mechanism; 81. a damping rod; 82. a connecting plate; 83. permanent magnet I; 84. a second permanent magnet block; 9. a first spring; 10. a telescopic column; 11. an air inlet pipe; 12. an air outlet block; 13. an airway; 14. a liquid inlet pipe; 15. a liquid discharge tank; 16. a second spring; 17. and (3) a sealing ring.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, based on embodiments of the invention, which are apparent to one of ordinary skill in the art without undue burden are contemplated to be within the scope of the invention
Example 1
A high-strength demoulding device for a structural member of an automobile comprises
The injection mold consists of a movable mold 1, a fixed mold 2, a fixed part 3 and a movable part 4, wherein the fixed part 3 is fixedly arranged, the movable part 4 is fixedly connected with the movable mold 1 through a guide post, and a limiting clamping plate 5 and a damping reset mechanism 8 are arranged on the left side of the movable mold 1;
the demolding mechanism comprises two groups of ejector pins 7 which are hermetically installed inside the movable mold 1, wherein a movable plate 6 is fixedly installed on the outer surface of each ejector pin 7, a first spring 9 is movably sleeved inside each ejector pin 7, a telescopic column 10 and a second spring 16 are movably sleeved inside each ejector pin 7, a liquid discharge groove 15 is formed in the outer surface of each telescopic column 10, an air inlet pipe 11 is installed on the inner wall of each telescopic column 10, a liquid inlet pipe 14 is connected to the left end of each air inlet pipe, an air outlet block 12 is fixedly installed on the outer surface of each air inlet pipe 11, and an air channel 13 is formed in each air outlet block 12;
the damping reset mechanism 8 comprises a damping rod 81 and a second permanent magnet 84, wherein a first permanent magnet 83 is fixedly connected to the telescopic end of the damping rod 81 through a connecting plate 82, the first permanent magnet 83 is adapted to be arranged on the left side of the inner wall of the thimble 7, and is in magnetic attraction connection with the second permanent magnet 84, and the second permanent magnet 84 is fixedly connected with the telescopic column 10;
the advantages of this embodiment are:
the ejector pin 7 is redesigned, the function of spraying the release agent is endowed, the ejector pin 7 is arranged for drawing the shell inside, the telescopic column 10 is sleeved in the ejector pin 7, the T-shaped structure at the end part of the telescopic column 10 is properly matched with the ejector pin 7 in a sleeved and pressed mode, the perfect matching of the telescopic column 10 and the cavity of the inner wall of the movable die 1 is guaranteed, then the damping reset mechanism 8 and the spring 16 are matched to promote the telescopic column 10 to "pop out" the inner wall of the ejector pin 7, at the moment, the spring 16 connected with the telescopic column 16 is shortened by the stretching stroke, the stretching degree is gradually reduced along with the movement of the telescopic column 10, the air inlet pipe 11 and the liquid inlet pipe 14 which are arranged inside the telescopic column 10 are utilized, high-pressure air flow and liquid release agent are concentrated in the liquid drain tank 15 with narrow space, the release agent is assisted to be atomized, the release agent is filled between the inner wall of the drain tank 15 and the outer surface of the air outlet block 12, the high-pressure air flow passes through the air passage 13 in the middle of the air outlet block 12, the release agent is sprayed out in a scattered mode, and is splashed on the inner wall of the inner wall, the release agent is automatically sprayed on the inner wall through the outer opening of the drain tank 15, the purpose of the cavity is achieved, and the release agent is automatically sprayed on the inner wall of the cavity is realized, and the working efficiency is improved, and the cavity is realized.
Meanwhile, the damping reset mechanism 8 and the force balance auxiliary device of the second spring 16 are utilized for demolding and discharging, when the movable die 1 moves leftwards under the action of the movable piece 4 and drives the movable plate 6 to be in extrusion contact with the limit stop of the fixed piece 3, the movable plate 6 and the thimble 7 integrally move rightwards relative to the movable die 1, at the moment, the damping rod 81 drives the first permanent magnet 83 to still move leftwards, so that the telescopic end of the damping rod 81 stretches out until the magnetic attraction force of the first permanent magnet 83 and the second permanent magnet 84 is completely overcome by the damping rod 81 and the second spring 16, and then the movable die is separated, and the following steps are performed: the flexible end of damping pole 81 is connected with permanent magnetism piece 83 through connecting plate 82, and the nature that breaks away from is permanent magnetism piece 83 and No. two permanent magnetism pieces 84, and both are magnetic connection, receives the effect of tensile force and overcomes after the magnetic attraction, can break away from naturally, and No. two springs 16 just in time utilize elasticity to drive flexible post 10 "pop out" the inside of thimble 7 this moment to supplementary work piece secondary fast blanking that is drawing of patterns, thereby promoted drawing of patterns efficiency.
Finally, by utilizing the damping characteristic of the damping rod 81, the fixed position of the first permanent magnet 83 and the second permanent magnet 84 is maintained, when the movable die 1 is reset and is restored to the die-closing state from the die-releasing state, at this time, the movable die 1 and the fixed die 2 are closed and exert auxiliary pressing action on the telescopic column 10, the telescopic column 10 drives the second permanent magnet 84 to move towards the first permanent magnet 83, the whole movable plate 6 is pushed to reset leftwards by the first spring 9, and as the distance between the second permanent magnet 84 and the first permanent magnet 83 is gradually shortened, the magnetic attraction force of the first permanent magnet 83 and the second permanent magnet 84 can enable the second permanent magnet 83 and the second permanent magnet 84 to be gradually and repeatedly absorbed and connected together, and drive the telescopic column 10 to move leftwards, so that the second spring 16 is re-stretched, and the original state of the telescopic end (namely, the state of the movable die 1 and the fixed die 2 in the die-closing state) is maintained.
Example 2
A rubber sleeve is arranged on one side of the inner wall of the thimble 7 facing the movable mould 1, and the rubber sleeve is arranged on the outer surface of the telescopic column 10 in an interference fit manner;
the advantages of this embodiment are:
the rubber sleeve is responsible for plugging the liquid discharge groove 15 formed on the surface of the telescopic column 10, so that the release agent from the liquid inlet pipe 14 can be prevented from leaking along the liquid discharge groove 15, and the release agent can be effectively prevented from flowing into the thimble 7.
Example 3
Two ends of a second spring 16 are respectively connected with the thimble 7 and the telescopic column 10, the second spring 16 is stretched and arranged on the inner wall of the thimble 7, two ends of a first spring 9 are respectively connected with the movable die 1 and the movable die 6, and the first spring 9 is compressed and arranged between the movable die 1 and the movable die 6;
the advantages of this embodiment are:
the first spring 9 is responsible for exerting pressure on the movable plate 6 and driving the thimble 7 to automatically reset to the original position after demoulding is completed, the movable plate 6 is fixedly connected with the thimble 7, the second spring 16 is stretched by the telescopic column 10 and the thimble 7, the telescopic column 10 is magnetically attracted and connected with the first permanent magnet 83 through the second permanent magnet 84, the tension of the second spring 16 is maintained, and the damping force of the damping rod 81 is provided, as shown in fig. 2 and 3, at the moment, the telescopic end of the damping rod 81 is contracted to the limit, so that the damping rod 81 can be regarded as a rigid whole.
Example 4
The cross section of the limiting clamping plate 5 is L-shaped, the movable plate 6 is in limiting extrusion contact with the inner side surface of the limiting clamping plate 5, and the middle part of the fixing piece 3 is provided with a limiting stop block and is in limiting extrusion contact with the movable plate 6;
the advantages of this embodiment are:
the limiting clamping plate 5 is in limiting extrusion contact with the movable plate 6, so that the ends of the ejector pins 7 and the telescopic columns 10 are limited at a position which can be kept flush with the inner wall of the cavity of the movable die 1, and the movable plate 6 and the ejector pins 7 are kept in an original state through compression resilience force of the first spring 9, see fig. 1 and 2.
Example 5
The outer side of one end of the telescopic column 10 connected with the second permanent magnet block 84 is also glued with a sealing ring 17, and the sealing ring 17 is made of a rubber block;
the advantages of this embodiment are:
the sealing ring 17 is used for maintaining the tightness between the left end of the telescopic column 10 and the inner wall of the thimble 7, so that the release agent can be prevented from exuding, and the positive pressure sealing function is provided for the inlet of the liquid discharge groove 15 by providing air tightness.
Example 6
The air outlet blocks 12 are arranged into four groups and are distributed on the outer surface of the air inlet pipe 11 at equal angles, the shape of the air outlet blocks 12 is a round table, and the outer surfaces of the air outlet blocks 12 are in equal clearance fit with the inner wall of the liquid discharge groove 15;
the advantages of this embodiment are:
the air outlet blocks 12 are distributed in the four groups of liquid discharge grooves 15, and when the telescopic column 10 is wholly ejected out of the thimble 7, the air-liquid mixture spraying through the air inlet pipe 11 and the liquid inlet pipe 14 forms a vaporous release agent, so that the release agent can be automatically sprayed on the inner wall of the cavity of the movable mould 1.
Example 7
The side of the telescopic column 10 facing the movable mould 1 is of a T-shaped structure, and the telescopic column 10 and the right end of the thimble 7 keep an adaptive combination state;
the advantages of this embodiment are:
as shown in fig. 2, the telescopic column 10 with the T-shaped structural design can avoid the liquid discharge groove 15 for spraying the release agent from being directly exposed outside, the liquid discharge groove 15 is perfectly hidden through the design of popping up the inner wall of the telescopic column 10 and the ejector pin 7, so that the part matched with the inside of the movable mould 1 is only the end part of the telescopic column 10, the possibility of leakage is greatly reduced, the thickness of the end part of the telescopic column 10 is not large, and when the device is initially demoulded, the movable plate 6 and the ejector pin 7 just push out the end part of the telescopic column 10 under the limit pushing of the fixing piece 3, the friction force generated by interference fit between the spring No. two 16 and the inside of the movable mould 1 is avoided, the elastic complexity interference of the spring No. two 16 is greatly reduced, and the reliability of the device is improved.
Example 8
The right end of the telescopic column 10 is kept flush with the inner wall of the cavity of the movable die 1 through the limiting clamping plate 5, the movable plate 6 and the ejector pin 7 in a die closing state, and the right end of the telescopic column 10 is in interference fit with the inside of the movable die 1;
the advantages of this embodiment are:
in the die assembly state, a cavity for discharging is formed between the movable die 1 and the fixed die 2, the telescopic column 10 keeps the integrity of the cavity inside the movable die 1 through interference fit with the movable die 1, and meanwhile, the telescopic column 10 can be smoothly reset to the initial die assembly state by utilizing the limiting drive of the first permanent magnet 83, the second permanent magnet 84 and the movable plate 6.
Example 9
A demolding method of a high-strength automobile structural part is applied to a demolding device of the high-strength automobile structural part, and comprises the following steps:
the mold closing, the moving part 4 drives the movable mold 1 to move towards the fixed mold 2 and to be in extrusion contact with the fixed mold 2 to form a sealed cavity, and the injection molding machine injects high-temperature molten plastic raw materials into the cavity formed by the fixed mold 2 and the movable mold 1 and cools and forms the plastic raw materials;
the die is opened, the moving piece 4 drives the movable die 1 to move leftwards, and drives the movable die 1, the limiting clamping plate 5 and the moving plate 6 to reset;
demoulding, fixing part 3 is fixed, moving die 1 drives moving plate 6 and thimble 7 to move leftwards and contact damping reset mechanism 8 under the action of moving part 4, then producing extrusion force, moving plate 6 is stopped by limit, and moves rightwards relative to moving die 1 with thimble 7, driving telescopic column 10 to press formed workpiece;
then, the movable die 1 drives the damping reset mechanism 8 to integrally move leftwards, the telescopic end of the damping rod 81 stretches leftwards and gradually drives the first permanent magnet 83 to move leftwards, at the moment, the second permanent magnet 84 is driven rightwards by the telescopic column 10, so that the magnetic attraction force of the first permanent magnet 83 and the second permanent magnet 84 is gradually overcome, the first permanent magnet 83 and the second permanent magnet 84 are suddenly separated, the whole telescopic column 10 is ejected out of the thimble 7 by the resilience force generated by stretching of the second spring 16, and a workpiece is completely ejected, so that demoulding is completed;
at this time, high-pressure air flow enters from the air inlet pipe 11, and outputs high-pressure air flow to the cavity of the movable mould 1 through the air passage 13, so that impurities on the inner wall are removed, the liquid release agent flows into the liquid discharge groove 15 along the inner wall of the liquid inlet pipe 14, the high-pressure air flow flowing through the air inlet pipe 11 is instantaneously broken and atomized, continuously flows out through the outer opening of the liquid discharge groove 15, and then is uniformly sprayed on the inner wall of the cavity of the movable mould 1;
finally, the movable die 1 is moved to the right through the moving part 4, so that the movable plate 6 and the ejector pin 7 are reset, the telescopic column 10 is reset under the action of the second spring 16, the first permanent magnet 83 and the second permanent magnet 84 are contacted again and magnetically attracted, and the telescopic column 10 drives the inner wall of the movable die 1 again.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. A high strength car structure shedder, characterized by, include
The injection mold comprises a movable mold (1), a fixed mold (2), a fixed part (3) and a movable part (4), wherein the fixed part (3) is fixedly arranged, the movable part (4) is fixedly connected with the movable mold (1) through a guide post, and a limiting clamping plate (5) and a damping reset mechanism (8) are arranged on the left side of the movable mold (1);
the demolding mechanism comprises two groups of ejector pins (7) which are arranged inside a movable mold (1) in a sealing manner, wherein a movable plate (6) is fixedly arranged on the outer surface of each ejector pin (7) and movably sleeved with a first spring (9), a telescopic column (10) and a second spring (16) are movably sleeved inside each ejector pin (7), a liquid discharge groove (15) is formed in the outer surface of each telescopic column (10), an air inlet pipe (11) is arranged on the inner wall of each telescopic column (10), a liquid inlet pipe (14) is connected to the left end of each air inlet pipe, an air outlet block (12) is fixedly arranged on the outer surface of each air inlet pipe (11), and an air passage (13) is formed in each air outlet block (12);
the damping reset mechanism (8) comprises a damping rod (81) and a second permanent magnet (84), wherein a first permanent magnet (83) is fixedly connected to the telescopic end of the damping rod (81) through a connecting plate (82), the first permanent magnet (83) is matched with the left side of the inner wall of the thimble (7) and is magnetically connected with the second permanent magnet (84), and the second permanent magnet (84) is fixedly connected with the telescopic column (10);
the two ends of the spring II (16) are respectively connected with the ejector pin (7) and the telescopic column (10), the spring II (16) is stretched and arranged on the inner wall of the ejector pin (7), the two ends of the spring I (9) are respectively connected with the movable die (1) and the movable die (6), the spring I (9) is compressed and arranged between the movable die (6) and the movable die (1), the cross section of the limiting clamping plate (5) is L-shaped, the movable die (6) is in limiting extrusion contact with the inner side surface of the limiting clamping plate (5), a limiting stop block is arranged in the middle of the fixing piece (3) and in limiting extrusion contact with the movable die (6), one side of the telescopic column (10) facing the movable die (1) is of a T-shaped structure, and the right end of the telescopic column (10) and the ejector pin (7) are kept in an adaptive combination state.
2. The high-strength automobile structural part demolding device according to claim 1, wherein a rubber sleeve is arranged on one side, facing the movable mold (1), of the inner wall of the ejector pin (7), and the rubber sleeve is arranged on the outer surface of the telescopic column (10) in an interference fit mode.
3. The high-strength automobile structural part demolding device according to claim 1, wherein a sealing ring (17) is glued on the outer side of one end of the telescopic column (10) connected with the second permanent magnet block (84), and the sealing ring (17) is made of rubber blocks.
4. The high-strength automobile structural part demolding device according to claim 1, wherein the air outlet blocks (12) are arranged in four groups and are distributed on the outer surface of the air inlet pipe (11) at equal angles, the air outlet blocks (12) are in a round table shape, and the outer surfaces of the air outlet blocks (12) are in equal clearance fit with the inner wall of the liquid draining groove (15).
5. The high-strength automobile structural part demolding device according to claim 1, wherein the right end of the telescopic column (10) is kept flush with the inner wall of a cavity of the movable mold (1) in a mold clamping state through a limiting clamping plate (5), a movable plate (6) and a thimble (7), and the right end of the telescopic column (10) is in interference fit with the inner part of the movable mold (1).
6. A method of demolding a high strength automotive structural member demolding device as claimed in any one of claims 1 to 5, comprising the steps of:
the mold is closed, the moving part (4) drives the movable mold (1) to move towards the fixed mold (2) and be in extrusion contact with the fixed mold (2) to form a sealed cavity, and the injection molding machine injects high-temperature molten plastic raw materials into the cavity formed by the fixed mold (2) and the movable mold (1) and cools and forms the plastic raw materials;
the die is opened, the moving piece (4) drives the moving die (1) to move leftwards, and drives the moving die (1), the limiting clamping plate (5) and the moving plate (6) to reset;
demoulding, wherein the fixed part (3) is fixed, the movable mould (1) drives the movable plate (6) and the ejector pin (7) to move leftwards under the action of the movable part (4) and contact with the damping reset mechanism (8), then extrusion force is generated, the movable plate (6) is limited and stopped, and the movable plate and the ejector pin (7) move rightwards relative to the movable mould (1) to drive the telescopic column (10) to press a formed workpiece;
then, the movable mould (1) drives the damping reset mechanism (8) to integrally move leftwards, the telescopic end of the damping rod (81) stretches leftwards and gradually drives the first permanent magnet (83) to move leftwards, at the moment, the second permanent magnet (84) is driven rightwards by the telescopic column (10), so that the magnetic attraction force of the first permanent magnet (83) and the second permanent magnet (84) is gradually overcome, the first permanent magnet (83) and the second permanent magnet (84) are suddenly separated, and the whole telescopic column (10) is ejected out of the thimble (7) by the resilience force generated by stretching of the second spring (16), so that a workpiece is completely ejected, and demoulding is completed;
at the moment, high-pressure air flow enters from the air inlet pipe (11), high-pressure air flow is output to the cavity of the movable mould (1) through the air passage (13), impurities on the inner wall are removed, the liquid release agent flows into the liquid discharge groove (15) along the inner wall of the liquid inlet pipe (14), the high-pressure air flow flowing through the air inlet pipe (11) is instantaneously broken and atomized, continuously flows out through an outer opening of the liquid discharge groove (15), and then is uniformly sprayed to the inner wall of the cavity of the movable mould (1);
finally, the movable die (1) is moved to the right through the moving part (4), the movable plate (6) and the ejector pin (7) are reset, the telescopic column (10) is reset under the action of the second spring (16), the first permanent magnet block (83) and the second permanent magnet block (84) are contacted again and are magnetically connected, and the telescopic column (10) drives the inner wall of the movable die (1) again.
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| CN202311703542.0A CN117416019B (en) | 2023-12-13 | 2023-12-13 | High-strength automobile structural part demoulding device and method thereof |
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| AT518410B1 (en) * | 2016-07-15 | 2017-10-15 | Waizenauer Dietmar | regulation system |
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| CN117416019A (en) | 2024-01-19 |
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