CN110223855B - Sphere guide rail die of battery capacitor sealing end cover - Google Patents

Sphere guide rail die of battery capacitor sealing end cover Download PDF

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Publication number
CN110223855B
CN110223855B CN201910511024.6A CN201910511024A CN110223855B CN 110223855 B CN110223855 B CN 110223855B CN 201910511024 A CN201910511024 A CN 201910511024A CN 110223855 B CN110223855 B CN 110223855B
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China
Prior art keywords
die
guide rail
cavity
plate
end cover
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Active
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CN201910511024.6A
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Chinese (zh)
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CN110223855A (en
Inventor
张肖康
程秀云
赵剑
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Hefei Kangte Micro Technology Co ltd
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Hefei Kangte Micro Technology Co ltd
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Priority to CN201910511024.6A priority Critical patent/CN110223855B/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/191—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention discloses a sphere guide rail die of a battery capacitor sealing end cover, wherein the sealing end cover comprises a base plate and an electrode, the base plate and the electrode are assembled through a blank body and a metal sleeve, the sphere guide rail die is formed by sequentially splicing a lower plate die, a middle plate guide rail die and an upper cover plate die, a workpiece placement area which is arranged in a matrix is hollowed out in the sphere guide rail die, the bottom of the workpiece placement area is used for placing assembled sealing end cover workpieces, and spheres are arranged in each workpiece placement area. The bottom shape of the workpiece placement area is the same as the shape of the sealing end cover, so that workpieces cannot shake in the sintering transportation process, the middle plate guide rail die is additionally arranged, the spheres (or guide posts) can be conveniently placed in the workpiece placement area, each workpiece can be better pressed and sealed and fixed under the extrusion action of the dead weight of the spheres (or guide posts), the size qualification rate of the sealing end cover after molding is ensured, and the performances such as pull-out resistance, sealing performance and the like of the sealing end cover are improved.

Description

Sphere guide rail die of battery capacitor sealing end cover
Technical Field
The invention relates to the technical field of battery or capacitor production, in particular to a sphere guide rail die of a battery capacitor sealing end cover.
Background
At present, in the technical fields of organic electrolyte batteries and capacitors, a sealing end cover is used as an extraction component of a battery and a capacitor electrode, and insulation property, strong corrosion resistance, pull-out resistance, sealing property and the like of a shell are ensured while the extraction electrode is met. The battery or capacitor sealing end cover is arranged at one end of the battery or capacitor shell, as shown in fig. 1, the sealing end cover mainly comprises an electrode 100 and a substrate 200, wherein the electrode 100 is formed by integrally forming an extraction electrode column 101, a crimping step 102 and a welding platform 103, the substrate 200 is of a ring sheet structure, the middle of the ring sheet structure is used for inserting the extraction electrode column 101, an outer boss 201 is arranged at the outer edge of the bottom of the ring sheet structure, and an inner boss 202 is arranged at the inner edge of the bottom of the ring sheet structure.
During production, the electrode 100 and the substrate 200 are packaged by riveting or high-temperature sintering, wherein the riveting belongs to mechanical connection, and the electrode 100 and the substrate 200 are riveted by plastic, so that the electrolyte leakage problem after short-term aging easily occurs. The leakage problem can be well solved by means of high-temperature sintering by the mold, and the blank 300 (glass blank or ceramic blank can be adopted) and the metal sleeve 400 are added as connection and insulation points during sintering, wherein the metal sleeve 400 is sleeved at the bottom and the side edge of the extraction electrode column 101, and the blank 300 is arranged between the metal sleeve 400 and the substrate 200. However, considering the processing technology problem, after the above-mentioned each work piece of sealed end cover is assembled, the whole height of multiunit work piece is inconsistent, traditional mould can not all play better press seal fixed action to all work pieces, leads to the end cover finished product after the sintering shaping to appear various quality problems.
Disclosure of Invention
The invention aims to provide a ball guide rail die of a battery capacitor sealing end cover, which solves the defect that the traditional die cannot play a role in press sealing and fixing all workpieces with inconsistent heights.
The invention realizes the above purpose through the following technical scheme:
the utility model provides a spheroid guide rail mould of battery electric capacity seal end cover, seal end cover includes base plate and electrode, assemble through body and metal sheath between base plate and the electrode, spheroid guide rail mould is by lower plate mould, middle plate guide rail mould and upper cover plate mould concatenation in proper order and is constituteed, and the inside area of placing of work piece that is the matrix arrangement that is formed with of spheroid guide rail mould, the bottom in the area is placed to the work piece is used for placing the seal end cover work piece that assembles, still is equipped with the spheroid in every work piece place the district, spheroidal is located the area of drawing of middle plate guide rail mould, and spheroid receives gravity and presses its bottom at the top of seal end cover work piece.
The further improvement is that the lower plate die, the middle plate guide rail die and the upper cover plate die are all graphite plate dies.
The upper surface edges of the lower plate die and the middle plate guide rail die are respectively provided with a circle of ladder grooves, the lower surface edges of the middle plate guide rail die and the upper cover plate die are respectively provided with a circle of raised strips, when the dies are closed, the raised strips of the upper cover plate die are just embedded into the ladder grooves of the middle plate guide rail die, and the raised strips of the middle plate guide rail die are just embedded into the ladder grooves of the lower plate die.
The workpiece placing area comprises a first lower cavity, a second lower cavity and a third lower cavity which are formed by hollowing out the upper end face of the lower plate die, a first middle cavity and a second middle cavity which are formed by hollowing out the middle plate guide rail die, and a first upper cavity and a second upper cavity which are formed by hollowing out the lower end face of the upper cover plate die.
The further improvement is that the first lower cavity, the second lower cavity, the first middle cavity, the second middle cavity, the first upper cavity and the second upper cavity are cylindrical structures with different radiuses and heights, which are communicated with each other in sequence through the same axis, the third lower cavity is of a cylindrical ring structure, and the third lower cavity is communicated with the edge of the lower end of the first middle cavity.
The further improvement is that the lower end of the second middle cavity is provided with an annular limiting block, and the inner diameter of the limiting block is smaller than the diameter of the sphere.
The improvement is that after the lower plate die, the middle plate guide rail die and the upper cover plate die are assembled, part of the sphere structure is located in the first upper cavity after exceeding the second middle cavity.
The lower plate die is further improved in that the lower plate die is provided with vent holes corresponding to the workpiece placing areas one by one, and the vent holes are used for communicating the workpiece placing areas with the outside.
The invention has the beneficial effects that: the bottom shape of the workpiece placement area is the same as the shape of the sealing end cover, so that the workpieces cannot shake in the sintering transportation process, the middle plate guide rail die is additionally arranged, the spheres (or guide posts) are conveniently placed in the workpiece placement area, and each workpiece can be better pressed and sealed and fixed through the extrusion action of the dead weight of the spheres (or guide posts), so that the size qualification rate of the sealing end cover after molding is ensured, and the performances such as pull-out resistance and sealing performance are improved.
Drawings
FIG. 1 is a schematic view of a cell or capacitor seal end cap;
fig. 2 and 3 are exploded views of example 1 at different angles;
FIG. 4 is a cross-sectional view of the lower plate mold, the intermediate rail mold and the upper cover plate mold of example 1 after mold clamping;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic illustration of press-seal fixation of a seal end cap workpiece in example 1;
FIG. 7 is a schematic illustration of press-seal fixation of a seal end cap workpiece in example 2;
FIGS. 8 and 9 are other schematic views of the guide post;
FIG. 10 is a schematic view of the structure of the upper cover plate with the vent holes;
in the figure: 100. an electrode; 101. extracting electrode columns; 102. a crimping step; 103. a welding platform; 200. a substrate; 201. an outer boss; 202. an inner boss; 300. a blank body; 400. a metal sleeve;
1. a lower plate die; 2. a middle plate guide rail die; 3. an upper cover plate die; 4. a workpiece placement area; 41. a first lower cavity; 42. a second lower cavity; 43. a third lower cavity; 44. a first intermediate cavity; 45. a second intermediate cavity; 451. a limiting block; 46. a first upper cavity; 47. a second upper cavity; 5. a sphere; 6. a ladder groove; 7. a convex strip; 8. a vent hole; 9. and (5) a guide post.
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
Example 1
As shown in fig. 1, the sealed end cover comprises a base plate 200 and an electrode 100, and the base plate 200 and the electrode 100 are assembled through a blank 300 and a metal sleeve 400.
And in combination with fig. 2 to 5, the sphere guide rail die is formed by sequentially splicing a lower plate die 1, a middle plate guide rail die 2 and an upper cover plate die 3, a workpiece placement area 4 which is arranged in a matrix is hollowed out in the sphere guide rail die, the bottom of the workpiece placement area 4 is used for placing assembled sealing end cover workpieces, the bottom shape of the workpiece placement area 4 is the same as the shape of the sealing end cover (the specific assembly structure is introduced by referring to fig. 1 and the background technology), and the workpieces cannot shake in the sintering transportation process. And, still be equipped with spheroid 5 in every work piece place district 4, spheroid 5 is located the hollowed out area of intermediate plate guide rail mould 2, and spheroid 5 is pressed on the top of sealed end cover work piece under its bottom under the dead weight. Through the extrusion effect of the dead weight of the ball 5, each workpiece can be better pressed and sealed and fixed, the size qualification rate of the formed sealing end cover is ensured, and the performances of pull-out resistance, tightness and the like are improved.
As the structure of the embodiment of the invention, the lower plate die 1, the middle plate guide rail die 2 and the upper cover plate die 3 are all graphite plate dies, and the melting point of the graphite plate dies reaches 3652 ℃, so that the graphite plate dies have excellent high temperature resistance, heat conductivity, thermal shock resistance, chemical stability and the like.
As the structure of the embodiment of the invention, the edges of the upper surfaces of the lower plate die 1 and the middle plate guide die 2 are respectively provided with a circle of ladder grooves 6, the edges of the lower surfaces of the middle plate guide die 2 and the upper cover die 3 are respectively provided with a circle of raised strips 7, when the die is closed, the raised strips 7 of the upper cover die 3 are just embedded into the ladder grooves 6 of the middle plate guide die 2, and the raised strips 7 of the middle plate guide die 2 are just embedded into the ladder grooves 6 of the lower plate die 1. The cooperation of the ladder groove 6 and the raised strips 7 is beneficial to the die assembly operation of the lower plate die 1, the middle plate guide rail die 2 and the upper cover plate die 3, and realizes the automatic positioning among the three, thereby improving the production efficiency and the quality of the sintered finished product.
As the structure of the embodiment of the present invention, the work placement section 4 includes a first lower cavity 41, a second lower cavity 42, and a third lower cavity 43 formed by hollowing out the upper end surface of the lower plate die 1, a first intermediate cavity 44 and a second intermediate cavity 45 formed by hollowing out in the intermediate plate rail die 2, and a first upper cavity 46 and a second upper cavity 47 formed by hollowing out the lower end surface of the upper cover plate die 3.
As an embodiment of the present invention, the first lower cavity 41, the second lower cavity 42, the first middle cavity 44, the second middle cavity 45, the first upper cavity 46 and the second upper cavity 47 are cylindrical structures with different radiuses and heights, which are coaxially and sequentially communicated, the third lower cavity 43 is a cylindrical ring structure, and the third lower cavity 43 is communicated with the lower end edge of the first middle cavity 44. Wherein the radius of the first lower cavity 41 is matched with the outer diameter of the metal sleeve 400, the radius of the second lower cavity 42 is matched with the outer diameter of the inner boss 202, the radius and the height of the first middle cavity 44 are matched with the size of the substrate 200, the radius of the second middle cavity 45 is slightly larger than the radius of the sphere 5, the radius of the first upper cavity 46 is larger than the radius of the second middle cavity 45, the radius of the second upper cavity 47 is smaller than the radius of the first upper cavity 46, and the total height of the first lower cavity 41, the second lower cavity 42, the first middle cavity 44, the second middle cavity 45, the first upper cavity 46 and the second upper cavity 47 is larger than the sum of the height of the workpiece and the height of the sphere 5; in addition, the radius and height of the third lower cavity 43 match the dimensions of the outer boss 201.
As the structure of the embodiment of the invention, after the lower plate die 1, the middle plate guide rail die 2 and the upper cover plate die 3 are assembled, part of the structure of the sphere 5 exceeds the second middle cavity 45 and is positioned in the first upper cavity 46, so that part of the structure of the sphere 5 can be observed outside the middle plate guide rail die 2, and the inspection process is facilitated.
As the structure of the embodiment of the invention, the lower plate die 1 is provided with the vent holes 8 which are in one-to-one correspondence with the workpiece placement areas 4, the vent holes 8 communicate the workpiece placement areas 4 with the outside, the vent holes 8 play a role in ventilation and air exhaust, which is helpful for the sintering process and is convenient for die assembly and die stripping operations.
Referring again to fig. 6, the specific steps of the mold described in the present invention are as follows: firstly, assembling a workpiece, namely sleeving a metal sleeve 400 in a sealing end cover at the bottom end of an extraction electrode column 101, placing a blank 300 in the middle of a ring piece of a substrate 200, and inserting an electrode 100 sleeved with the metal sleeve 400 into the middle of the blank 300, so that the extraction electrode column 101 passes through the blank 300, and the crimping step 102 is abutted against the blank 300 to finish assembly; then, the assembled workpiece is integrally placed at the bottom ends of the workpiece placement areas 4 of the lower plate die 1, the middle plate guide rail die 2 is covered on the lower plate die 1, the convex strips 7 are just embedded into the ladder grooves 6, at the moment, the bottoms of the metal sleeves 400 of the workpiece are just embedded into the first lower cavity 41, the bottoms of the inner bosses 202 and the blank 300 are just embedded into the second lower cavity 42, the outer bosses 201 are just embedded into the third lower cavity 43, the substrate 200 is clamped in the first middle cavity 44, and the crimping steps 102 and the welding platform 103 extend into the second middle cavity 45; next, a ball 5 is put in from the top of the second middle cavity 45, and the ball 5 is pressed on the top of the workpiece; and then the upper cover plate die 3 is covered on the middle plate guide rail die 2, and the convex strips 7 are just embedded into the ladder grooves 6. At this time, the bottom end of the sphere 5 is pressed at the top of the welding platform 103, and the sphere 5 is extruded by self gravity to ensure that each workpiece can be better pressed and fixed, thereby ensuring the size qualification rate of the formed sealing end cover and improving the performances of pull-out resistance, sealing performance and the like. Finally, sintering at high temperature, the blank 300 and the metal sleeve 400 complete the sealing of the electrode 100 and the substrate 200.
As a structure of the embodiment of the present invention, a ring-shaped stopper 451 is disposed at the lower end of the second intermediate chamber 45, and the inner diameter of the stopper 451 is smaller than the diameter of the ball 5. When the ball 5 is placed in the second middle cavity 45, the limiting block 451 can support the ball 5, so as to prevent the ball 5 from falling down directly. Due to the arrangement of the limiting block 451, in the die assembly process, the ball 5 can be placed in the second middle cavity 45 of the middle plate guide rail die 2, then the upper cover plate die 3 is covered on the middle plate guide rail die 2, and then the lower plate die 1 on which the workpiece is placed is integrally covered.
Example 2
The main structure of the guide post and guide rail die of the sealing end cover is the same as that of the embodiment 1, and the only difference is that the sphere 5 is replaced by the guide post 9, and the bottom of the guide post 9 is made into a hemispherical structure. Referring to fig. 7, the pressing and sealing of the workpiece by the dead weight of the guide post 9 is shown.
In addition, as shown in fig. 8 and 9, the bottom of the guide post 9 is not necessarily hemispherical, and other structures similar to those of fig. 8 and 9 may be used.
As shown in fig. 10, the upper cover plate mold 3 may also be provided with a vent hole 8 for further increasing the ventilation and exhaust effect. The diameter of the vent hole 8 of the upper cover plate die 3 is smaller than the diameter of the sphere 5 or the guide post 9, so that the sphere 5 or the guide post 9 is prevented from falling off from the vent hole 8.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (3)

1. The utility model provides a spheroid guide rail mould of battery electric capacity seal end cover, seal end cover includes base plate and electrode, assemble its characterized in that through body and metal sheath between base plate and the electrode: the ball guide rail die is formed by sequentially splicing a lower plate die (1), a middle plate guide rail die (2) and an upper cover plate die (3), a workpiece placement area (4) which is arranged in a matrix is hollowed out in the ball guide rail die, the bottom of the workpiece placement area (4) is used for placing assembled sealing end cover workpieces, a ball (5) is further arranged in each workpiece placement area (4), the ball (5) is positioned in the hollowed-out area of the middle plate guide rail die (2), and the bottom of the ball (5) is pressed on the top of the sealing end cover workpieces under the action of gravity;
the upper surface edges of the lower plate die (1) and the middle plate guide rail die (2) are respectively provided with a circle of ladder grooves (6), the lower surface edges of the middle plate guide rail die (2) and the upper cover plate die (3) are respectively provided with a circle of raised strips (7), when the die is closed, the raised strips (7) of the upper cover plate die (3) are just embedded into the ladder grooves (6) of the middle plate guide rail die (2), and the raised strips (7) of the middle plate guide rail die (2) are just embedded into the ladder grooves (6) of the lower plate die (1);
the workpiece placement area (4) comprises a first lower cavity (41), a second lower cavity (42) and a third lower cavity (43) which are formed by hollowing out the upper end surface of the lower plate die (1), a first middle cavity (44) and a second middle cavity (45) which are formed by hollowing out in the middle plate guide rail die (2), and a first upper cavity (46) and a second upper cavity (47) which are formed by hollowing out the lower end surface of the upper cover plate die (3);
the first lower cavity (41), the second lower cavity (42), the first middle cavity (44), the second middle cavity (45), the first upper cavity (46) and the second upper cavity (47) are cylindrical structures with different radiuses and heights, which are communicated with each other in sequence by a coaxial center, the third lower cavity (43) is of a cylindrical ring structure, and the third lower cavity (43) is communicated with the edge of the lower end of the first middle cavity (44);
the lower end of the second middle cavity (45) is provided with an annular limiting block (451), and the inner diameter of the limiting block (451) is smaller than the diameter of the sphere (5);
after the lower plate die (1), the middle plate guide rail die (2) and the upper cover plate die (3) are assembled, part of the structure of the sphere (5) is located in the first upper cavity (46) after exceeding the second middle cavity (45).
2. The spherical guide mold of a battery capacitor seal end cap of claim 1, wherein: the lower plate die (1), the middle plate guide rail die (2) and the upper cover plate die (3) are all graphite plate dies.
3. The spherical guide mold of a battery capacitor seal end cap of claim 1, wherein: the lower plate die (1) is provided with vent holes (8) corresponding to the workpiece placing areas (4) one by one, and the vent holes (8) are used for communicating the workpiece placing areas (4) with the outside.
CN201910511024.6A 2019-06-13 2019-06-13 Sphere guide rail die of battery capacitor sealing end cover Active CN110223855B (en)

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CN110223855B true CN110223855B (en) 2024-02-27

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000012769U (en) * 1998-12-21 2000-07-15 김영환 Mold for molding semiconductor package
CN102527820A (en) * 2012-01-19 2012-07-04 宁波久腾车灯电器有限公司 Aluminum alloy die casting piece trimming die with smooth cut
KR20120077312A (en) * 2010-12-30 2012-07-10 주식회사 우일하이테크 Laminate apparatus with rigid body press plate for manufacturing solar cell module
CN203448498U (en) * 2013-07-18 2014-02-26 广东华田电器有限公司 Punching device of temperature controller of electric cooker
CN105405991A (en) * 2015-12-21 2016-03-16 广东九九华立新材料股份有限公司 Production method of battery cover plate provided with explosion-proof structure
CN107214281A (en) * 2017-05-23 2017-09-29 辽宁五八内燃机配件有限公司 A kind of ship machine connecting rod forging blanking mold and application method
CN209747348U (en) * 2019-06-13 2019-12-06 合肥康特微科技有限公司 Ball guide rail die of battery capacitor sealing end cover

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000012769U (en) * 1998-12-21 2000-07-15 김영환 Mold for molding semiconductor package
KR20120077312A (en) * 2010-12-30 2012-07-10 주식회사 우일하이테크 Laminate apparatus with rigid body press plate for manufacturing solar cell module
CN102527820A (en) * 2012-01-19 2012-07-04 宁波久腾车灯电器有限公司 Aluminum alloy die casting piece trimming die with smooth cut
CN203448498U (en) * 2013-07-18 2014-02-26 广东华田电器有限公司 Punching device of temperature controller of electric cooker
CN105405991A (en) * 2015-12-21 2016-03-16 广东九九华立新材料股份有限公司 Production method of battery cover plate provided with explosion-proof structure
CN107214281A (en) * 2017-05-23 2017-09-29 辽宁五八内燃机配件有限公司 A kind of ship machine connecting rod forging blanking mold and application method
CN209747348U (en) * 2019-06-13 2019-12-06 合肥康特微科技有限公司 Ball guide rail die of battery capacitor sealing end cover

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