CN113427703A - Injection molding equipment and process for high-crystalline material large-suspension bracket - Google Patents
Injection molding equipment and process for high-crystalline material large-suspension bracket Download PDFInfo
- Publication number
- CN113427703A CN113427703A CN202110515516.XA CN202110515516A CN113427703A CN 113427703 A CN113427703 A CN 113427703A CN 202110515516 A CN202110515516 A CN 202110515516A CN 113427703 A CN113427703 A CN 113427703A
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- Prior art keywords
- thimble
- injection molding
- slider
- die cavity
- mound
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- Pending
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 46
- 239000000725 suspension Substances 0.000 title claims abstract description 31
- 239000002178 crystalline material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 11
- 230000008569 process Effects 0.000 title abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- 239000010949 copper Substances 0.000 claims abstract description 29
- 239000003292 glue Substances 0.000 claims abstract description 18
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000012778 molding material Substances 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 6
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C45/14073—Positioning or centering articles in the mould using means being retractable during injection
-
- 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
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3406—Components, e.g. resistors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of injection molding of electric automobile copper bars, and discloses injection molding equipment and process of a high-crystallization material large-suspension bracket. Injection moulding equipment, including last mould and lower mould, upward be equipped with the die cavity between mould and the lower mould, it has the thimble that is used for spacing clamp to mould plastics the copper bar to alternate in the die cavity, thimble retractable alternates on the die cavity, the die cavity still is equipped with the mound and glues the groove, mound glues the groove bottom and is equipped with the fore-set that is used for the mound to glue, the fore-set is taken out the back when accomplishing moulding plastics and is pushed up when the injection molding material is in the molten condition, with the interior injection moulding mound of mound groove and go into the vacancy that complements the thimble formation, copper bar both ends and die cavity side in close contact with behind the compound die. The invention realizes the one-time injection molding of the high-crystalline material large suspension bracket, and the thickness of each injection molding part is consistent; the injection molding material is completely filled at one time, so that unbalanced filling and uneven wall thickness of a product are avoided; the use of the preset insert is avoided, and welding traces are avoided; the deformation of the long and thin large suspension bracket caused by thermal expansion during injection molding is solved by fast gradual clamping.
Description
Technical Field
The invention relates to an injection molding process of an electric automobile copper bar.
Background
The electric automobile adopts the copper bar to carry out power transmission, and the copper bar outer wall cladding insulating material carries out 240 degrees thin wall packing of high crystalline substance and satisfies the insulating properties that are not punctured more than 1300V under the super large mold insert hanging beam condition, satisfies the insulation test of high temperature steam more than 200 hours simultaneously, is the very big subject of trade, does not adopt the injection molding process to satisfy the requirement of car group battery collocation use at home and abroad at present. At present, the process of secondary assembly by applying a copper insert and a shell or the process of binding an insulating sleeve on a copper strip is generally applied, and the conventional injection molding design can cause unreliable insert positioning, so that the filling is unbalanced, the wall thickness of a product is uneven, welding traces are easily formed at the position of a molten adhesive, the performance cannot be met, in addition, the batch production performance is insufficient, the qualified rate is low, and the cost waste is serious; the copper bar that the ultralong is superfine can't fixed position when suspension is moulded plastics, produces the wall thickness inequality easily, and inhomogeneous thin wall insulating surface can form point discharge effect and cause the insulating layer inefficacy. Therefore, an injection molding device of a high-crystallization large-suspension bracket is urgently needed.
Disclosure of Invention
In order to overcome the defects of thin-wall injection molding of high-crystallization materials of large-suspension brackets, the invention relates to injection molding equipment and process of the high-crystallization materials of the large-suspension brackets.
The specific scheme of the invention is as follows: injection moulding equipment of big suspension support of high crystalline material, including last mould and lower mould, upward be equipped with the die cavity between mould and the lower mould, alternate in the die cavity has the thimble that is used for spacing clamp to press from both sides the copper bar of moulding plastics, thimble retractable alternates on the die cavity, the die cavity still is equipped with the mound and glues the groove, mound gluey tank bottom portion is equipped with the fore-set that is used for the mound to glue, the fore-set is when accomplishing to mould plastics, and the back is taken out to the thimble, and pushes up when the injection molding material is in the molten condition, injects the plastics mound in the mound gluey groove and replenisheds the vacancy that the thimble formed, copper bar both ends and die cavity side in close contact with behind the compound die.
Further, the total volume of the mound glue grooves is equal to the volume of the ejector pins entering the die cavity, and the mound glue grooves are arranged corresponding to the ejector pins.
Preferably, the ejector pins comprise side ejector pins inserted into the side faces of the lower die, the rear ends of the side ejector pins are fixed on first sliding blocks, the first sliding blocks slide in a reciprocating mode perpendicular to the side faces of the die cavities, the rear end faces of the first sliding blocks are arranged in an inclined mode, second sliding blocks are arranged at the rear ends of the first sliding blocks, the second sliding blocks are perpendicular to the sliding direction of the first sliding blocks, sliding grooves and sliding protrusions matched with the sliding grooves are formed between the second sliding blocks and the rear end faces of the first sliding blocks respectively, the ejector pins further comprise clamping oil cylinders driving the second sliding blocks to move, and the first sliding blocks are driven to slide through the movement of the second sliding blocks to drive the ejector pins to move in a reciprocating mode. The first sliding block is provided with a plurality of groups, and a plurality of groups of thimbles are fixed on the first sliding block.
Preferably, the ejector pin further comprises a die cavity bottom ejector pin and a top ejector pin, the bottom ejector pin and the top ejector pin comprise a positioning portion extending into the die cavity and a main body portion at the rear end, the rear end of the main body portion is driven by a limiting oil cylinder, and the ejector pin further comprises a spring used for enabling the bottom ejector pin to reset. The driving of thimble is realized to top thimble rear end adoption side direction slider, including sliding to be established the side direction slider of mould rear end, driving oil cylinder sets up side direction slider side drive side direction slider lateral sliding, the side direction slider side is equipped with the slope spout, top thimble rear end slides and establishes on the slope spout.
Preferably, the middle part of the ejection column is provided with a return spring, and the rear end of the ejection column is arranged on a driving mechanism.
Preferably, the jacking columns are arranged in a group in pairs, and the jacking columns are arranged on two sides of the die cavity and are arranged in a staggered mode with the copper bar suspension position.
An injection molding process of a high-crystalline material large-suspension bracket comprises a large-suspension copper bar injection mold, and comprises the following steps: the thimble is withdrawn, and the copper bar is placed into the die cavity; closing the die, namely clamping the side ejector pins, the ejector pins at the bottom of the die cavity and the ejector pins at the top in place, wherein the clamping oil cylinder carries out pre-carrying; confirming the in-place condition of the copper bar; the limiting oil cylinder retreats; carrying the clamping oil cylinder at the corner; closing the upper die and the lower die; the clamping cylinder is completely clamped in place. Controlling the temperature at 140 ℃ and 240 ℃; pressurizing and injecting until the materials are completely filled, wherein the limiting oil cylinder of the top thimble is withdrawn; completely filling the mold cavity for injection molding, and then drawing out the ejector pin for pier rubber so that the injection material filling ejector pin still in a molten state in the pier rubber groove leaves a vacant site; and finally, demolding.
The invention has the beneficial effects that: the one-time injection molding of the high-crystalline material large suspension bracket is realized, and the thickness of each injection molding part is consistent; the injection molding material is completely filled at one time, so that unbalanced filling and uneven wall thickness of a product are avoided; the use of the preset insert is avoided, and welding traces are avoided; the deformation of the long and thin large suspension bracket caused by thermal expansion during injection molding is solved by fast gradual clamping.
Drawings
Fig. 1 is a perspective view of the present invention.
FIG. 2 is a schematic view of a partial structure of the present invention.
FIG. 3 is a schematic view of the structure of the top pillar of the present invention.
FIG. 4 is a schematic view of a pier rubber groove of the present invention.
FIG. 5 is a schematic view of a top needle driving mechanism according to the present invention.
Wherein: 1. an upper die; 2. a lower die; 3. a thimble; 31. a side thimble; 32. a bottom thimble; 33. and a top thimble; 331. a lateral slider; 332. an inclined chute; 4. A first slider; 5. a second slider; 6. a chute; 7. sliding and protruding; 8, pouring glue grooves; 9. a top pillar; 91. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5: injection moulding equipment of big suspension support of high crystalline material, including last mould 1 and lower mould 2, upward be equipped with the die cavity between mould 1 and the lower mould 2, copper bar both ends and die cavity side in close contact with make the copper bar need mould plastics the position and form airtight space. The die cavity is internally inserted with a thimble 3 for limiting and clamping an injection molding copper bar, the thimble 3 is inserted in the die cavity in a telescopic manner, the thimble 3 comprises a side thimble 31 inserted in the side surface of the lower die 2, the rear end of the side thimble 31 is fixed on a first slider 4, the first slider 4 slides in a reciprocating manner in a direction perpendicular to the side surface of the die cavity, the rear end surface of the first slider 4 is inclined, the rear end of the first slider 4 is provided with a second slider 7, the second slider 5 is vertical to the sliding direction of the first slider 4, a sliding groove 6 and a slider 7 matched with the sliding groove 6 are respectively arranged between the second slider 5 and the rear end surface of the first slider 4, and the die cavity further comprises a clamping oil cylinder for driving the second slider 5 to move, so that the first slider 4 is driven to slide by driving the second slider 5 to drive the thimble 3 to move in a reciprocating manner. The first sliding block 4 is provided with a plurality of groups, and a plurality of groups of thimbles 3 are fixed on the first sliding block 4. The thimble 3 further includes a die cavity bottom thimble 32 and a top thimble 33, the bottom thimble 32 and the top thimble 33 include a positioning portion extending into the die cavity and a main body portion at a rear end, the rear end of the main body portion is driven by a limit cylinder, and the thimble further includes a spring for resetting the bottom thimble 32.
The rear end of the top thimble adopts a lateral sliding block 331 to realize the driving of the top thimble 33, the driving comprises a lateral sliding block 331 which is arranged at the rear end of the upper die in a sliding manner, a driving oil cylinder is arranged on the lateral surface of the lateral sliding block 331 to drive the lateral sliding block 331 to laterally slide, an inclined sliding groove 332 is arranged on the lateral surface of the lateral sliding block 331, and the rear end of the top thimble 33 is arranged on the inclined sliding groove 332 in a sliding manner.
The die cavity still is equipped with mound and glues groove 8, 8 bottoms in mound and glues groove are equipped with the fore-set 9 that is used for the mound to glue, and thimble 3 takes out when accomplishing to mould plastics, the fore-set 9 pushes up when the injection molding material is in molten condition, with mound glue 8 interior injection moulding mounds go into and then supply the vacancy that thimble 3 formed, behind the compound die 8 volume sum in mound glue groove equals the volume that thimble 3 entered into the die cavity, mound glue groove 8 corresponds the setting with thimble 3, and mound glue groove 8 sets up in 3 sides of thimble. The middle part of the top column 9 is provided with a return spring 91, the rear end of the top column 9 is provided with an oil pressure driving mechanism, and the rear end of the top column is driven by oil pressure. Two liang of a set of settings of fore-set 9, fore-set 9 sets up and just misplaces with copper bar suspension position in last mould bottom surface and lower mould bottom surface.
As shown in fig. 1 to 5: an injection molding process of a high-crystalline material large-suspension bracket comprises a large-suspension copper bar injection mold, and comprises the following steps: the thimble 3 returns to facilitate the copper bar to be placed, the thimble 3 carries 20-50%, and the copper bar is placed in the die cavity to manually confirm the in-place condition of the copper bar; closing the upper die 1 and the lower die 2, and clamping the side ejector pins 31, the die cavity bottom ejector pins 32 and the top ejector pins 33 in place; the limiting oil cylinder retreats; carrying the clamping oil cylinder at the corner; the clamping oil cylinder is completely clamped in place from one end to the other end in the clamping process, and the thimble 3 is completely clamped; controlling the temperature at 140-240 deg.c; and after the top thimble limiting oil cylinder is withdrawn, injecting the injection molding material under pressure until the injection molding material is completely filled. And then, all the ejector pins 3 are withdrawn, the pier stud 9 carries out pier gluing, and the injection material in the pier gluing groove 8 which is still in a molten state fills the ejector pins 3 to leave vacant positions. And finally, cooling and demolding.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
It is noted that, herein, relational terms such as first, second, side, bottom, up, down, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Injection moulding device of big suspension support of high crystalline material, including last mould (1) and lower mould (2), upward be equipped with die cavity, its characterized in that between mould (1) and lower mould (2): the mould intracavity alternates to have thimble (3) that are used for spacing clamp to press from both sides the copper bar of moulding plastics, thimble (3) retractable alternates on the die cavity, the die cavity still is equipped with mound gluey groove (8), mound gluey groove (8) bottom is equipped with fore-set (9) that are used for the mound to glue, fore-set (9) are when accomplishing moulding plastics, and thimble (3) are taken out the back, and the injection molding material pushes up when being in the molten condition, with the interior injection moulding mound of mound gluey groove (8) and go into the vacancy that complements thimble (3) formation, copper bar both ends and die cavity side in close contact with behind the compound die.
2. The injection molding apparatus of a high crystalline material large suspension bracket according to claim 1, wherein: the total volume of the mound glue groove (8) is equal to the volume of the ejector pin (3) entering the die cavity, and the mound glue groove (8) and the ejector pin (3) are correspondingly arranged.
3. The injection molding apparatus of a high crystalline material large suspension bracket according to claim 1, wherein: thimble (3) including alternate insert side thimble (31) of lower mould (2) side, side thimble (31) rear end is fixed on first slider (4), first slider (4) perpendicular to die cavity side reciprocating sliding, first slider (4) rear end face slope sets up, first slider (4) rear end is equipped with second slider (5), second slider (5) perpendicular to first slider (4) slip direction sets up, second slider (5) with be equipped with spout (6) between first slider (4) the rear end face respectively, with spout (6) complex smooth protruding (7), still including the tight hydro-cylinder of clamp of drive second slider (5) motion, thereby drive first slider (4) through the motion of drive second slider (5) and slide and drive thimble (3) reciprocating motion.
4. The injection molding apparatus of a high crystalline material large suspension bracket according to claim 1, wherein: the thimble (3) further comprises a die cavity bottom thimble (32) and a top thimble (33), the bottom thimble (32) and the top thimble (33) comprise a positioning part extending into the die cavity and a main part at the rear end, the rear end of the main part is driven by a limiting oil cylinder, and the thimble further comprises a spring for resetting the bottom thimble (32); the driving of thimble is realized to top thimble rear end adoption side direction slider (331), establish including sliding side direction slider (331) of going up the mould rear end, driving cylinder sets up side direction slider (331) side drive side direction slider (331) lateral sliding, side direction slider (331) side is equipped with slope spout (332), top thimble rear end is slided and is established on slope spout (332).
5. The injection molding apparatus of a high crystalline material large suspension bracket according to claim 1, wherein: the middle part of the top pillar (9) is provided with a return spring (91), and the rear end of the top pillar (9) is arranged on a driving mechanism.
6. The injection molding apparatus of a high crystalline material large suspension bracket according to claim 1, wherein: every two liang of a set of settings of fore-set (9), fore-set (9) set up in die cavity both sides and with copper bar suspension position dislocation set.
7. An injection molding apparatus for high crystalline material large suspension bracket according to claim 3, characterized in that: the first sliding block (4) is provided with a plurality of groups, and a plurality of groups of thimbles (3) are fixed on the first sliding block (4).
8. The injection molding method of the high-crystalline material large suspension bracket comprises the injection molding equipment of the high-crystalline large suspension copper bar in any one of claims 1 to 7, and is characterized by comprising the following steps:
A. the thimble (3) is withdrawn, and the copper bar is placed into the die cavity;
B. closing the die, and clamping the side ejector pins (31), the die cavity bottom ejector pins (32) and the top ejector pins (33) in place;
C. controlling the temperature at 140 ℃ and 2400 ℃;
D. pressurized injection to complete fill;
E. the thimble (3) is drawn out; rapidly performing pier gluing to ensure that the injection filling thimble (3) still in a molten state in the pier gluing groove (8) leaves a vacancy;
F. and (5) demolding.
9. An injection molding method of a high crystalline material large suspension bracket according to claim 8, characterized in that: the step B also comprises the following steps
A. Pre-carrying a clamping oil cylinder;
B. confirming the in-place condition of the copper bar;
C. the limiting oil cylinder retreats;
D. carrying the clamping oil cylinder at the corner;
E. the upper die (1) and the lower die (2) are closed;
F. the clamping cylinder is completely clamped in place.
10. An injection molding method of a high crystalline material large suspension bracket according to claim 8, characterized in that: the step D comprises the following steps:
A. the limiting oil cylinder of the top thimble withdraws;
B. and completely filling the mold cavity for injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515516.XA CN113427703A (en) | 2021-05-12 | 2021-05-12 | Injection molding equipment and process for high-crystalline material large-suspension bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515516.XA CN113427703A (en) | 2021-05-12 | 2021-05-12 | Injection molding equipment and process for high-crystalline material large-suspension bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113427703A true CN113427703A (en) | 2021-09-24 |
Family
ID=77753144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110515516.XA Pending CN113427703A (en) | 2021-05-12 | 2021-05-12 | Injection molding equipment and process for high-crystalline material large-suspension bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113427703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701125A (en) * | 2022-03-23 | 2022-07-05 | 江苏奥力威传感高科股份有限公司 | High-temperature-resistant copper bar injection mold and process for three-electric product of new energy automobile |
-
2021
- 2021-05-12 CN CN202110515516.XA patent/CN113427703A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701125A (en) * | 2022-03-23 | 2022-07-05 | 江苏奥力威传感高科股份有限公司 | High-temperature-resistant copper bar injection mold and process for three-electric product of new energy automobile |
| CN114701125B (en) * | 2022-03-23 | 2023-11-24 | 江苏奥力威传感高科股份有限公司 | High-temperature-resistant copper bar injection mold and process for new energy automobile three-electric product |
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