CN113665067A - Multistage sectional type automatic ejection die for producing IPM power module - Google Patents
Multistage sectional type automatic ejection die for producing IPM power module Download PDFInfo
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- CN113665067A CN113665067A CN202110842547.6A CN202110842547A CN113665067A CN 113665067 A CN113665067 A CN 113665067A CN 202110842547 A CN202110842547 A CN 202110842547A CN 113665067 A CN113665067 A CN 113665067A
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- 238000001746 injection moulding Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
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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
- B29C45/2602—Mould construction elements
-
- 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
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of power electronic power module production, and provides a multistage sectional type automatic ejection die for producing an IPM power module, which comprises: an upper template provided with an upper die cavity; the lower die plate is provided with a lower die cavity, the die insert is arranged in the lower die cavity, and a lower die base is arranged below the lower die plate; the mold cavity is formed by splicing the mold insert, the upper mold cavity and the lower mold cavity and is used for injection molding of the IPM power module; the first demolding mechanism is arranged between the lower die base and the lower die plate and is used for demolding the IPM power module formed by injection molding out of the multistage sectional type automatic ejection die; and the second demolding mechanism is arranged between the first demolding mechanism and the lower template and ejects the mold insert out of the multistage sectional type automatic ejection mold. Compared with the prior art, the invention has the advantages that: the production procedures of the product are reduced, the automation degree and the production efficiency of production are improved, and the production quality of the IPM power module is improved.
Description
Technical Field
The invention belongs to the technical field of power electronic power module production, and particularly relates to a multistage sectional type automatic ejection die for producing an IPM power module.
Background
The power electronic technology occupies a very important position in the current rapidly-developed industrial field, and the power electronic power module is taken as a representative of the power electronic technology and is widely applied to industries such as electric automobiles, photovoltaic power generation, wind power generation, industrial frequency conversion and the like. With the rise of the industry in China, the power electronic power module has wider market prospect. The current power electronic power module gradually develops towards integration and intellectualization, and the IPM module is produced accordingly. The IPM module adds additional control and evaluation logic units compared to a standard power module and is integrated on the PCB inside the power module. The IPM power module introduced by international mainstream companies has been widely used, and its convenience and reliability are recognized by the market.
As shown in fig. 1, the structure diagram of the existing IPM power module includes a housing, a plurality of terminals (i.e. copper pillars) are arranged around the housing, the terminals are molded in the housing, the structure of the terminals is the same, and the number and positions of the terminals can be flexibly set according to the actual circuit topology requirements, the tail portions of the terminals are inserted into connecting holes correspondingly arranged around a control circuit board, the control circuit board is fixed and electrically connected, the head portions of the terminals extend out of an external circuit of the housing, all the head portions of the terminals are not located right above the control circuit board, the control circuit board is connected with the housing terminals, so that a module loop is linked with an external system loop, thereby realizing the functions of transmission of driving signals of a switch chip, sampling of temperature and current, input and output of power supply, and the like. When an IPM power module is produced by injection molding in the prior art, terminals are required to be arranged on the periphery of a movable mold insert, then the movable mold insert is placed in an injection molding cavity, an IPM power module is formed in the injection molding cavity by injection molding, the terminals and a shell are injection molded together, then the IPM power module and the mold insert are removed from the injection mold together by a demolding structure, and then the IPM power module and the mold insert are distinguished, so that the production of the IPM power module is realized.
Wherein use the plastics main part that the instrument probably caused the damage to the shell when distinguishing IPM power module and mould mold insert, crush the plastics main part of shell, cause the production yield lower, the disintegrating slag of production can remain on the shell, difficult clearance to seriously influence the wiring, even arouse that the part of price is scrapped, and the production process of whole IPM power module is complicated, and production efficiency is low, has reduced the automation level of production.
Disclosure of Invention
The invention provides a multistage sectional type automatic ejection die for producing an IPM power module, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the multistage sectional type automatic ejection die for producing the IPM power module comprises a die insert, wherein insertion grooves for placing terminals are formed in the periphery of the die insert;
the upper die assembly comprises an upper die plate, an upper die cavity is arranged on the bottom surface of the upper die plate, and an upper die plate driving mechanism is arranged above the upper die plate;
the lower template is arranged below the upper die assembly, a lower die cavity is formed in the top of the lower template, and the die insert is arranged in the lower die cavity;
the lower die base is arranged below the lower die plate and is connected with the lower die plate;
the mould cavity is formed by combining the mould insert, the upper mould cavity and the lower mould cavity and is used for forming the IPM power module by injection moulding;
and the demolding mechanism is arranged between the lower die base and the lower die plate and is used for sequentially and respectively separating the injection molded IPM power module and the mold insert from the mold insert and the lower mold cavity.
Compared with the prior art, the invention has the advantages that: the invention relates to a multistage sectional type automatic ejection die for producing an IPM power module, which is characterized in that when in use, a terminal of the IPM power module is placed at an insertion groove of a die insert, then the die insert is placed in a lower die cavity, an upper die assembly is driven by an upper die plate driving mechanism to move towards one side close to a lower die plate so as to realize die assembly, the upper die cavity at the upper die plate, the lower die cavity at the lower die plate and the die insert are spliced together to form a die cavity, then the IPM power module is formed in the die cavity by injection molding, after the injection molding is finished, the upper die plate driving mechanism is used for driving an upper die plate to move towards one side far away from the lower die plate so as to realize die opening, after the die opening, a demoulding mechanism firstly takes out the IPM power module formed by injection molding from the multistage sectional type automatic ejection die, then takes out the die insert from the multistage sectional type automatic ejection die so as to facilitate the use of next injection molding, and meanwhile, the IPM power module is separated from the mold insert. The multistage sectional type automatic ejection die for producing the IPM power module reduces the production processes of the IPM power module, greatly improves the automation degree and the production efficiency of production, improves the production quality of the IPM power module and reduces the production cost.
In the above multistage sectional type automatic ejection mold for producing an IPM power module, the demolding mechanism includes: the mould comprises a lower mould base, a lower mould, a first ejector pin component, a first driving oil cylinder, a second ejector pin component and a second driving oil cylinder, wherein the first ejector pin component is arranged between the lower mould base and the lower mould plate, the first ejector pin component is connected with the first driving oil cylinder, the first ejector pin component is arranged at the top end of the first ejector pin component, the first ejector pin component comprises a plurality of first ejector pins, the upper ends of the first ejector pins are opposite to the mould cavity, the second ejector pin component is arranged between the first ejector pin component and the lower mould plate, the second ejector pin component is connected with the second driving oil cylinder, the second ejector pin component is arranged at the upper end of the second ejector pin component, the second ejector pin component comprises a plurality of second ejector pins, and the upper ends of the second ejector pins are opposite to the mould insert.
After the mold is opened, the first push plate assembly moves upwards relative to the mold cavity under the action of the first driving oil cylinder, the first ejector pin assembly on the first push plate assembly moves upwards relative to the mold cavity under the action of the first push plate assembly, and the upper end of the first ejector pin is right opposite to the mold cavity, so that the IPM power module molded by injection molding in the mold cavity is ejected out of the multistage sectional type automatic ejection mold. After the IPM power module subjected to injection molding in the mold cavity is ejected out of the multistage sectional type automatic ejection mold by the first demolding mechanism, the second push plate assembly moves upwards relative to the mold insert under the action of the second driving oil cylinder, the second push plate assembly drives a second ejector pin assembly connected with the upper end of the second push plate assembly to move upwards relative to the mold insert, and the upper portion of the second ejector pin is over against the mold insert, so that the mold insert is ejected out of the multistage sectional type automatic ejection mold. The second push plate component is arranged between the first push plate component and the lower template, so when the first push plate component moves towards one side of the mold cavity, the second push plate component can move towards one side of the mold cavity, because the upper end of the first ejector pin component is right opposite to the mold cavity, the upper side of the second ejector pin component is right opposite to the mold insert, and a distance is reserved between the second ejector pin component and the mold insert, the IPM power module in the mold cavity is firstly pushed out of the multistage sectional type automatic ejection mold by the first ejector pin component, and then the second push plate component continues to move upwards under the action of the second driving oil cylinder, so that the mold insert is pushed out of the multistage sectional type automatic ejection mold.
In the multistage sectional type automatic ejection die for producing the IPM power module, the first push plate assembly comprises a first upper push plate and a first lower push plate, the first lower push plate is arranged at the lower end of the first upper push plate, the first upper push plate and the first lower push plate are connected through a bolt, one end of the first ejector pin assembly penetrates through the first upper push plate and is connected with the first lower push plate, the second push plate assembly comprises a second upper push plate and a second lower push plate, the second lower push plate is arranged at the lower end of the second upper push plate, the second upper push plate and the second lower push plate are connected through a bolt, and one end of the second ejector pin assembly penetrates through the second upper push plate and is connected with the second lower push plate.
First push pedal and first push pedal bolted connection constitute first push pedal subassembly, and second push pedal bolted connection constitute the second push pedal subassembly, have strengthened the structural strength of first push pedal subassembly and second push pedal subassembly, have prolonged the life of multistage sectional type automatic ejection mould.
In the multistage sectional type automatic ejection die for producing the IPM power module, two sides of the first push plate assembly and the second push plate assembly are both provided with push plate guide rods, and the first push plate assembly and the second push plate assembly are both provided with push plate guide grooves corresponding to the push plate guide rods.
The second push pedal subassembly is placed in the top of first push pedal subassembly, is equipped with push pedal guide bar and push pedal guide way between second push pedal subassembly and the first push pedal subassembly for first push pedal subassembly and second push pedal subassembly reciprocate along the push pedal guide bar, guarantee the stability of first push pedal subassembly and second push pedal subassembly relative position.
In the above multistage sectional type automatic ejection die for producing an IPM power module, a guide assembly is disposed between the upper die plate and the lower die plate, and the guide assembly includes: the lower end of the vertical guide rod extends out of the upper template, and one side of the lower end of the vertical guide rod is provided with a limiting step;
the guide hole is formed in one side of the lower template and corresponds to the vertical guide rod, and a limiting block is arranged on one side in the lower end of the guide hole and corresponds to a limiting step.
When the upper film component moves relative to one side of the lower template under the action of the upper film driving mechanism, the vertical guide rod is inserted into the guide hole in the lower template, so that the upper template and the lower template are ensured to be just opposite to each other, and the upper mold cavity and the lower mold cavity can be completely attached together to form the mold cavity. The lower end of the vertical guide rod is provided with a limiting step, one side of the lower end of the lower guide rod corresponds to the limiting step and is provided with a limiting block, when the upper membrane assembly moves downwards to a proper position, the upper mould cavity of the upper mould plate is attached to the lower mould cavity of the lower mould plate, and the limiting step on the vertical guide rod is abutted to the limiting block at the position of the lead hole, so that the upper membrane assembly is limited from further moving downwards, and the matched mould is in place.
In the multistage sectional type automatic ejection die for producing the IPM power module, one side, close to a die cavity, of the lower end of the vertical guide rod is provided with a first triangular inclined surface, one side of the vertical guide rod is connected with a triangular inclined surface fixing block, a second triangular inclined surface is arranged on the triangular inclined surface fixing block, the second triangular inclined surface is in contact with the first triangular inclined surface, plugs are arranged on the left side and the right side of one end of the triangular inclined surface fixing block, and two jacks are arranged at the lower end of the die insert corresponding to the plugs.
One side that the lower extreme of vertical guide bar is close to the mould cavity is equipped with first triangle inclined plane, when vertical guide bar downstream carries out the compound die, first triangle inclined plane and the second triangle inclined plane looks butt of triangle inclined plane fixed block, promote triangle inclined plane fixed block to mould cavity inboard when vertical guide bar downstream, triangle inclined plane fixed block moves to mould cavity one side, make in the plug of triangle inclined plane fixed block one end inserts the jack of mould mold insert lower extreme, thereby play the fixed action to the mould mold insert, avoid the mould mold insert at the in-process round trip movement of moulding plastics.
In foretell a multistage sectional type automatic ejection mould for producing IPM power module, be equipped with the unblocking lever on the first push pedal subassembly, the tip of unblocking lever is equipped with the triangle breach and forms third triangle inclined plane, be equipped with the spacing groove on the triangle inclined plane fixed block, one side of spacing groove is equipped with fourth triangle inclined plane, third triangle inclined plane with fourth triangle inclined plane is corresponding, the upper end part of unblocking lever stretches into in the spacing groove, just second push pedal subassembly with be equipped with the connecting rod between the lower bolster, the cover is equipped with expanding spring on the connecting rod.
When the plug at one end of the triangular inclined plane fixing block is inserted into the insertion hole of the mold insert, the third triangular inclined plane part at one end of the unlocking rod on the first push plate assembly extends into the limiting groove on the triangular inclined plane fixing block, and the third triangular inclined plane is in contact with the fourth triangular inclined plane part in the limiting groove. When demoulding is to be carried out, the first push plate component of the first demoulding mechanism moves upwards relative to one side of the lower template under the action of the first driving oil cylinder so as to drive the second push plate component to move relative to one side of the lower template so as to extrude the expansion spring on the connecting rod, the expansion spring is compressed, meanwhile, when the first push plate component moves relative to one side of the lower template, the unlocking rod is driven to move upwards, the third triangular inclined surface at the end part of the unlocking rod moves towards the inner part of the limiting groove, meanwhile, the third triangular inclined surface is abutted against the fourth triangular inclined surface, and simultaneously, when the third triangular inclined surface moves upwards relative to the fourth triangular inclined surface, the third triangular inclined surface extrudes the fourth triangular inclined surface towards the side far away from the mould cavity, so that the fourth triangular inclined surface moves towards the side far away from the mould cavity, the triangular inclined surface fixing block moves towards the side far away from the mould cavity, and the plug at one side of the triangular inclined surface fixing block moves out of the jack of the mould insert, thereby conveniently realizing the drawing of patterns of mould mold insert. The connecting rod and the telescopic spring are arranged to play a role in buffering, so that the demolding process is more stable.
In the above multistage sectional type automatic ejection die for producing the IPM power module, a plurality of fixing grooves are formed in the periphery of one side, close to an upper die plate, of a die insert, fixing blocks are installed in the fixing grooves, one ends of the fixing blocks extend out of the fixing grooves, avoidance holes are formed in the upper die cavity corresponding to the fixing blocks, one ends of the fixing blocks extend into the avoidance holes, fixing rods are further arranged on one sides of the fixing blocks, and one ends of the fixing rods are connected with the upper die plate.
The mold insert is placed in a lower mold cavity of the lower mold plate, and during mold closing, one end of a fixing rod on the upper mold plate is abutted to a fixing block on the mold insert, so that the mold insert is further fixed, and the mold insert is prevented from moving in the injection molding process.
In the above multistage segmented automatic ejection mold for producing an IPM power module, the upper mold assembly further comprises: the upper die fixing plate is arranged at the upper end of the upper die plate and is connected with the upper die plate through a screw rod, a main runner is arranged on the upper die fixing plate, and the main runner is communicated with the upper die cavity;
go up the mould roof, its setting is in go up the upper end of mould fixed plate, and with link to each other through the bolt between the mould fixed plate, upward be equipped with the mouth of moulding plastics on the mould roof, the mouth of moulding plastics with the sprue is linked together.
An upper die cavity is arranged on the upper die plate, and sub-runners are arranged around the upper die cavity. During injection molding, injection molding liquid is injected through the injection molding port, the injection molding liquid enters the main runner through the injection molding port, flows through the sub-runner through the main runner and flows into the upper mold cavity, after the mold closing, the upper mold cavity, the lower mold cavity and the mold insert form an injection molding cavity, and the injection molding liquid flows into the injection molding cavity, so that injection molding is realized.
Drawings
FIG. 1 is a schematic diagram of an IPM power module of the present invention;
fig. 2 is a schematic structural view of a mold insert according to an embodiment of the present invention;
FIG. 3 is a schematic view of the overall structure of one embodiment of the present invention;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 3;
FIG. 5 is a schematic structural view of an upper die assembly in accordance with one embodiment of the present invention;
FIG. 6 is a schematic structural view of a lower template according to one embodiment of the present invention;
FIG. 7 is a schematic structural view of a first spike assembly and a second spike assembly in accordance with one embodiment of the present invention;
FIG. 8 is a schematic partial block diagram of an embodiment of the present invention.
In the figure, 100-mold insert; 110-a plug groove; 120-fixed groove; 130-fixed block; 150-a receptacle; 200-IPM power module; 210-a terminal; 220-a housing; 300-an upper die assembly; 310-upper template; 311-upper mould cavity; 312-avoidance hole; 313-a shunt; 314-a fixation bar; 320-an upper die fixing plate; 321-a main flow channel; 330-upper die top plate; 331-an injection molding port; 400-lower template; 410-a lower mold cavity; 500-lower die base; 610-a first push-up plate; 620-a first lower push plate; 630-a first thimble; 640-an unlocking lever; 641-third triangular bevel; 710-a second push-plate; 720-a second lower push plate; 730-a second thimble; 810-vertical guide bar; 811-a limit step; 812-a first triangular bevel; 820-a pilot hole; 821-a limiting block; 830-triangular inclined plane fixing block; 831-limiting groove; 834-second triangular bevel; 835-plug; 836-fourth triangular bevel; 910-push plate guide bar; 920-push plate guide groove; 930-connecting rod; 940-a telescoping spring; 950-cooling water pipes.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 8, the multi-stage sectional type automatic ejection mold for producing an IPM power module of the present invention includes a mold insert 100, and insertion grooves 110 for receiving terminals 210 are formed around the mold insert 100.
The automatic ejecting mould of multistage sectional type still includes: the upper die assembly 300 comprises an upper die plate 310, an upper die cavity 311 is arranged at the bottom of the upper die plate 310, sub-runners 313 are arranged around the upper die cavity 311, and an upper die plate driving mechanism is arranged at the upper end of the upper die plate 310. The upper die assembly 300 further includes: an upper mold fixing plate 320 which is arranged at the upper end of the upper mold plate 310 and is connected with the upper mold plate 310 through a screw, wherein a main runner 321 is arranged on the upper mold fixing plate 320, and the main runner 321 is communicated with the upper mold cavity 311; an upper mold top plate 330 disposed at the upper end of the upper mold fixing plate 320 and connected to the upper mold fixing plate 320 by bolts, the upper mold top plate 330 having an injection port 331 formed therein, the injection port 331 being communicated with the main flow passage 321;
a lower template 400 disposed below the upper mold assembly 300, wherein a lower mold cavity 410 is disposed at the top of the lower template 400, and the mold insert 100 is disposed in the lower mold cavity 410;
a lower mold base 500 disposed below the lower mold plate 400, the lower mold base 500 being connected to the lower mold plate 400;
a mold cavity 900 formed by splicing the mold insert 100, the upper mold cavity 311 and the lower mold cavity 410, the mold cavity 900 being used for injection molding to form the IPM power module 200;
a demolding mechanism, comprising: a first demolding mechanism disposed between lower mold base 500 and lower mold plate 400, for first demolding IPM power module 200 formed by injection molding out of mold insert 100 and lower mold cavity 410. The first demolding mechanism includes: the first push plate assembly is arranged between the lower die base 500 and the lower die plate 400 and is connected with the first driving oil cylinder; and the first ejector pin assembly is arranged at the top end of the first push plate assembly and comprises a plurality of first ejector pins 630, and the upper ends of the first ejector pins 630 are opposite to the mold cavity 900. The first push plate assembly comprises a first upper push plate 610 and a first lower push plate 620, the first lower push plate 620 is arranged at the lower end of the first upper push plate 610, the first upper push plate 610 is connected with the first lower push plate 620 through a bolt, and one end of the first thimble assembly passes through the first upper push plate 610 and is connected with the first lower push plate 620; and a second demolding mechanism disposed between the first demolding mechanism and the lower template 400, the second demolding mechanism being configured to eject the mold insert 100 out of the lower mold cavity 410. The second demolding mechanism includes: a second push plate assembly disposed between the first push plate assembly and the lower die plate 400, the second push plate assembly being connected to a second driving cylinder; and the second ejector pin assembly is arranged at the upper end of the second push plate assembly and comprises a plurality of second ejector pins 730, and the upper parts of the second ejector pins 730 are opposite to the mold insert 100. The second push plate assembly comprises a second upper push plate 710 and a second lower push plate 720, the second lower push plate 720 is arranged at the lower end of the second upper push plate 710, the second upper push plate 710 is connected with the second lower push plate 720 through a bolt, and one end of the second ejector pin assembly passes through the second upper push plate 710 and is connected with the second lower push plate 720; both sides of the first push plate component and the second push plate component are provided with push plate guide rods 910, and the corresponding push plate guide rods 910 on the first push plate component and the second push plate component are provided with push plate guide grooves 920.
Be equipped with the direction subassembly between cope match-plate pattern 310 and the lower bolster 400, the direction subassembly includes: a vertical guide rod 810 which is connected to one side of the upper mold plate 310 by screw threads, and the lower end of which extends out of the upper mold plate 310, one side of the lower end of the vertical guide rod 810 being provided with a limit step 811; and a guide hole 820 provided at one side of the lower mold plate 400, the guide hole 820 corresponding to the vertical guide bar 810, and a limiting block 821 provided with a limiting step 811 correspondingly arranged at one side of the lower end of the guide hole 820. One side that the lower extreme of vertical guide bar 810 is close to mould cavity 900 is equipped with first triangle inclined plane 812, and one side of vertical guide bar 810 is connected with triangle inclined plane fixed block 830, the second triangle inclined plane 834 that is equipped with on the triangle inclined plane fixed block 830, and second triangle inclined plane 834 contacts with first triangle inclined plane 812, and the one end left and right sides of triangle inclined plane fixed block 830 all is equipped with plug 835, and the lower extreme of mould insert 100 corresponds plug 835 and is equipped with two jack 150.
An unlocking rod 640 is arranged on the first push plate assembly, a triangular notch is formed in the end portion of the unlocking rod 640 to form a third triangular inclined surface 641, a limiting groove 831 is formed in the triangular inclined surface fixing block 830, a fourth triangular inclined surface 836 is arranged on one side of the limiting groove 831, the third triangular inclined surface 641 corresponds to the fourth triangular inclined surface 836, the upper end portion of the unlocking rod 640 extends into the limiting groove 831, a connecting rod 930 is arranged between the second push plate assembly and the lower template 400, and an expansion spring 940 is sleeved on the connecting rod 930.
The mold insert 100 is provided with a plurality of fixing grooves 120 around one side close to the upper mold plate 310, the fixing blocks 130 are installed in the fixing grooves 120, one ends of the fixing blocks 130 extend out of the fixing grooves 120, the upper mold cavity 311 is provided with avoiding holes 312 corresponding to the fixing blocks 130, one ends of the fixing blocks 130 extend into the avoiding holes 312, one sides of the fixing blocks 130 are further provided with fixing rods 314, and one ends of the fixing rods 314 are connected with the upper mold plate 310.
The working principle is as follows: when the die insert is used, the terminal 210 is placed in the inserting groove 110 of the die insert 100, then the die insert 100 is placed in the lower die cavity 410 on the lower die plate 400, then the upper die plate driving mechanism is utilized to drive the upper film assembly 300 to move downwards relative to the lower die plate 400, so that the vertical guide rod 810 on one side of the upper die plate 310 is inserted into the guide hole 820 on the lower die plate 400 until the limit step 811 on one side of the vertical guide rod 810 is contacted with the limit block 821 on the guide hole 820, at this time, the fixing block 130 on the die insert 100 extends into the avoiding hole 312 on the upper die plate 310, one end of the fixing rod 314 on the upper die plate 310 is abutted against the fixing block 130 on the die insert 100, the die assembly is completed, so that the upper die cavity 311, the die insert 100 and the lower die cavity 410 are spliced to form the complete die cavity 900, and when the vertical guide rod 810 moves downwards, the first triangular inclined surface 812 of the vertical guide rod 810 is contacted with the second triangular inclined surface 834 of the triangular inclined surface fixing block 830, the first triangular slope 812 presses the second triangular slope 834 toward the mold cavity 900 side, so that the triangular slope fixing block 830 moves toward the mold cavity 900 side, and the plug 835 on the triangular slope fixing block 830 side is inserted into the insertion hole 150 at the lower end of the mold insert 100, thereby completing the fixing of the mold insert 100.
Then, injection is performed, injection liquid is injected from the injection port 331 of the upper mold top plate 330, the injection liquid flows into the main flow passage 321 at the upper mold fixing plate 320 through the injection port 331, and flows into the upper mold cavity 311 through the main flow passage 321 and the branch flow passage 313, and at this time, the upper mold cavity 311, the lower mold cavity 410, and the mold insert 100 form the mold cavity 900, so the injection liquid flows into the mold cavity 900. A plurality of cooling water pipes 950 are arranged in the multistage sectional type automatic ejection mold, then the injection molding liquid is cooled and pressure-maintained in the mold cavity 900 to form the housing 220 of the IPM power module 200, and the terminal 210 is injected on the housing 220 to form the complete IPM power module 200.
Then, the mold is split and the film is removed. After the injection molding is completed, under the action of the upper template driving mechanism, the upper template assembly 300 is driven to move towards one side away from the lower template 400, and at the moment, the vertical guide rod 810 moves towards one side away from the lower template 400 along the guide hole 820, so that the upper template 310 is driven to move towards one side away from the lower template 400, and the mold splitting is realized. After the mold is separated, the first push plate assembly of the first demolding mechanism moves towards the lower mold plate 400 under the action of the first driving oil cylinder, the first lower push plate 620 penetrates through the lower mold base 500 to be connected with the first driving oil cylinder, the first lower push plate 620 is in bolted connection with the first upper push plate 610, the second demolding assembly and the first demolding assembly are limited together through the push plate guide rod 910 and the push plate guide groove 920, and the second upper push plate 710 and the second lower push plate 720 are in bolted connection, so that when the first driving oil cylinder drives the first lower push plate 620 to move upwards relative to the lower mold plate 400, the first upper push plate 610, the second upper push plate 710 and the second lower push plate 720 are driven to move upwards along the push plate guide groove 920, when the second upper push plate 710 moves upwards, the telescopic spring 940 on the connecting rod 930 is pressed, the unlocking rod 640 arranged on the first lower push plate 620 is driven to move upwards at the same time, the third triangular inclined surface 641 at one end of the unlocking rod 640 is connected with the fourth triangular inclined surface 836 at the fourth triangular fixing block 831 in the limiting groove at one end of the triangular inclined surface 830 In a touching manner, while the third triangular slope 641 moves upward, the fourth triangular slope 836 is pressed toward a side away from the mold cavity 900, so that the plug 835 of the triangular slope fixing block 830 is pressed out of the insertion hole 150 of the mold insert 100, thereby unlocking the mold insert 100. Then, the first lower push plate 620 continuously moves upward, so as to drive the first ejector pin 630 of the first ejector pin assembly to eject the IPM power module 200 out of the mold insert 100 and the lower mold cavity 410, and under the action of the first driving motor, the first lower push plate 620 stops moving upward. At this time, the second driving motor starts to work, and drives the second lower push plate 720 to move upward, so as to drive the second ejector pin 730 of the second ejector pin assembly to move upward, and the mold insert 100 is ejected out of the lower mold cavity 410. After the demolding of the IPM power module 200 and the mold insert 100 is completed, under the action of the first driving motor, the second driving motor and the extension spring 940, the first push plate assembly returns to the position of the lower mold base 500, and the second push plate assembly returns to the upper side of the first push plate assembly and returns to the original position, so that the next injection molding is facilitated.
The specific embodiments described herein are merely illustrative of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The multistage sectional type automatic ejection die for producing the IPM power module is characterized by comprising a die insert (100), wherein insertion grooves (110) for placing terminals (210) are formed in the periphery of the die insert (100);
the upper die assembly (300) comprises an upper die plate (310), an upper die cavity (311) is arranged on the bottom surface of the upper die plate (310), and an upper die plate driving mechanism is arranged above the upper die plate (310);
a lower platen (400) disposed below the upper die assembly (300), and a lower mold cavity (410) is disposed at a top of the lower platen (400), the mold insert (100) being disposed within the lower mold cavity (410);
the lower die base (500) is arranged below the lower die plate (400), and the lower die base (500) is connected with the lower die plate (400);
a mold cavity (900) formed by combining the mold insert (100), the upper mold cavity (311) and a lower mold cavity (410), the mold cavity (900) being used for injection molding of the IPM power module (200);
the demolding mechanism is arranged between the lower die base (500) and the lower die plate (400) and is used for sequentially separating the injection molded IPM power module (200) and the mold insert (100) from the mold insert (100) and the lower mold cavity (410) respectively.
2. The multi-stage segmented automatic ejection mold for producing IPM power module of claim 1, wherein said demolding mechanism comprises: a first push plate component, a first thimble component, a first driving oil cylinder, a second push plate component, a second thimble component and a second driving oil cylinder, the first push plate component is arranged between the lower die base (500) and the lower die plate (400), the first push plate component is connected with the first driving oil cylinder, the first thimble component is arranged at the top end of the first push plate component and comprises a plurality of first thimbles (630), the upper end of the first thimble (630) is over against the mould cavity (900), the second push plate component is arranged between the first push plate component and the lower template (400), the second push plate component is connected with a second driving oil cylinder, the second thimble component is arranged at the upper end of the second push plate component, the second ejector pin assembly comprises a plurality of second ejector pins (730), and the upper portions of the second ejector pins (730) are opposite to the mold insert (100).
3. The multi-stage segmented automatic ejection mold for producing IPM power module of claim 2, characterized in that the first push plate assembly comprises a first upper push plate (610) and a first lower push plate (620), the first lower push plate (620) is arranged at the lower end of the first upper push plate (610), the first upper push plate (610) and the first lower push plate (620) are connected through a bolt, one end of the first thimble assembly passes through the first upper push plate (610) and is connected with the first lower push plate (620), the second push plate assembly comprises a second upper push plate (710) and a second lower push plate (720), the second lower push plate (720) is placed at the lower end of the second upper push plate (710), the second upper push plate (710) and the second lower push plate (720) are connected through a bolt, one end of the second ejector pin assembly penetrates through the second upper push plate (710) and is connected with the second lower push plate (720).
4. The multi-stage segmented automatic ejection mold for producing an IPM power module according to claim 2, wherein both sides of said first and second push plate assemblies are provided with push plate guide rods (910), and said first and second push plate assemblies are provided with push plate guide grooves (920) corresponding to said push plate guide rods (910).
5. The multi-stage segmented automatic ejection mold for producing IPM power module of claim 2, wherein a guide assembly is provided between said upper mold plate (310) and lower mold plate (400), said guide assembly comprising:
the vertical guide rod (810) is in threaded connection with one side of the upper template (310), the lower end of the vertical guide rod extends out of the upper template (310), and one side of the lower end of the vertical guide rod (810) is provided with a limiting step (811);
the guide hole (820) is formed in one side of the lower template (400), the guide hole (820) corresponds to the vertical guide rod (810), and a limiting block (821) is arranged on one inner side of the lower end of the guide hole (820) corresponding to the limiting step (811).
6. The multi-stage sectional type automatic ejection die for producing the IPM power module as claimed in claim 5, wherein a first triangular bevel (812) is disposed on one side of the lower end of the vertical guide rod (810) close to the die cavity (900), a triangular bevel fixing block (830) is connected to one side of the vertical guide rod (810), a second triangular bevel (834) is disposed on the triangular bevel fixing block (830), the second triangular bevel (834) contacts with the first triangular bevel (812), plugs (835) are disposed on both left and right sides of one end of the triangular bevel fixing block (830), and two insertion holes (150) are disposed on the lower end of the die insert (100) for the plugs (835).
7. The automatic ejecting mould of multistage sectional type for producing IPM power module of claim 6, characterized in that, be equipped with unlocking lever (640) on the first push pedal subassembly, the tip of unlocking lever (640) is equipped with the triangle breach and forms third triangle inclined plane (641), be equipped with spacing groove (831) on triangle inclined plane fixed block (830), one side of spacing groove (831) is equipped with fourth triangle inclined plane (836), third triangle inclined plane (641) with fourth triangle inclined plane (836) are corresponding, the upper end part of unlocking lever (640) stretches into in the spacing groove (831), just second push pedal subassembly with be equipped with connecting rod (930) between lower bolster (400), the cover is equipped with expanding spring (940) on connecting rod (930).
8. The multi-stage sectional type automatic ejection mold for producing the IPM power module of claim 1, wherein a plurality of fixing grooves (120) are formed around one side of the mold insert (100) close to the upper mold plate (310), fixing blocks (130) are mounted in the fixing grooves (120), one ends of the fixing blocks (130) extend out of the fixing grooves (120), an avoidance hole (312) is formed in the upper mold cavity (311) corresponding to the fixing block (130), one end of each fixing block (130) extends into the avoidance hole (312), a fixing rod (314) is further disposed on one side of each fixing block (130), and one end of each fixing rod (314) is connected to the upper mold plate (310).
9. The multi-stage segmented automatic ejection die for producing IPM power module of claim 1, wherein said upper die assembly (300) further comprises:
the upper die fixing plate (320) is arranged at the upper end of the upper die plate (310) and is connected with the upper die plate (310) through a screw, a main flow channel (321) is arranged on the upper die fixing plate (320), and the main flow channel (321) is communicated with the upper die cavity (311);
go up mould roof (330), it sets up the upper end of last fixed plate (320), and with link to each other through the bolt between last fixed plate (320), it is equipped with injection molding mouth (331) on mould roof (330), injection molding mouth (331) with mainstream say (321) and be linked together.
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| JP2009143051A (en) * | 2007-12-12 | 2009-07-02 | Daiwa Kasei Ind Co Ltd | Ejection mechanism of injection molding machine |
| CN101733882A (en) * | 2008-11-21 | 2010-06-16 | 苏州汉扬精密电子有限公司 | Two-segment type ejection mechanism |
| CN207915980U (en) * | 2018-01-23 | 2018-09-28 | 东泰精密模具(苏州)有限公司 | A kind of mold |
| CN209207991U (en) * | 2018-11-23 | 2019-08-06 | 台州市欧威家具有限公司 | Automatic take off of injection mould multistage die sinking pours a structure |
| CN213617955U (en) * | 2020-10-16 | 2021-07-06 | 深圳赛意法微电子有限公司 | Mold sealing die lower die of intelligent power module, mold sealing die and intelligent power module |
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2021
- 2021-07-26 CN CN202110842547.6A patent/CN113665067B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009143051A (en) * | 2007-12-12 | 2009-07-02 | Daiwa Kasei Ind Co Ltd | Ejection mechanism of injection molding machine |
| CN101733882A (en) * | 2008-11-21 | 2010-06-16 | 苏州汉扬精密电子有限公司 | Two-segment type ejection mechanism |
| CN207915980U (en) * | 2018-01-23 | 2018-09-28 | 东泰精密模具(苏州)有限公司 | A kind of mold |
| CN209207991U (en) * | 2018-11-23 | 2019-08-06 | 台州市欧威家具有限公司 | Automatic take off of injection mould multistage die sinking pours a structure |
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| CN113665067B (en) | 2023-04-07 |
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