CN217606927U - Sealing ring of cylindrical battery and mold for manufacturing sealing ring - Google Patents
Sealing ring of cylindrical battery and mold for manufacturing sealing ring Download PDFInfo
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- CN217606927U CN217606927U CN202221660805.5U CN202221660805U CN217606927U CN 217606927 U CN217606927 U CN 217606927U CN 202221660805 U CN202221660805 U CN 202221660805U CN 217606927 U CN217606927 U CN 217606927U
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- 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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Abstract
The utility model provides a sealing washer of cylindric battery and mould that is used for making this sealing washer, including the center post with the outer wall of center post is along its circumference outwards extending and the annular sealing washer body that forms, with the orientation negative pole lid one end of sealing washer is its lower extreme, the outer peripheral edges of sealing washer body forms the cylindric sealing washer turn-ups along its circumference downwardly extending, it is protruding to be equipped with an annular along its inner circumference on the turn-ups inner wall of sealing washer, just the turn-ups inner wall of sealing washer arrives radial distance control between the protruding peak of annular is at 0.05 ~ 0.2mm. The utility model discloses a sealing washer can solve the problem that exists among the prior art that the sealing washer is glutinous on the mould difficult demoulding influences its normal production.
Description
Technical Field
The utility model relates to a battery pack field especially relates to a sealing washer of cylindric battery and the mould that is used for making this sealing washer.
Background
For a cylindrical battery (e.g., an alkaline battery), the assembly of the seal ring, copper pin, and bottom cover (also referred to as the "negative cover") is referred to as the current collector. Generally, the seal ring is constructed as follows: the sealing ring comprises a center post and a sealing ring body, wherein the outer wall of the center post extends outwards along the circumferential direction of the center post to form the sealing ring body, one end of the sealing ring facing a negative electrode cover is the lower end of the sealing ring body, the outer peripheral edge of the sealing ring body bends downwards to extend to form a battery steel shell contact part, the inner wall of the battery steel shell contact part, the lower surface of the sealing ring body and the outer wall of the center post form an inner cavity of the sealing ring in a seamless enclosing mode, and a center hole is formed in the center post of the sealing ring. And a copper needle is welded and fixed at the center of the cathode cover. When the current collector of the battery is assembled, the copper needle on the negative electrode cover penetrates through the center hole and is in interference fit with the center hole, the negative electrode cover is attached to the inner surface of the sealing ring body of the sealing ring, and the current collector is assembled.
The sealing ring mainly plays a role in sealing the internal space of the battery, preventing the electrolyte of the battery from leaking in normal use and preventing the battery from exploding in abnormal use. The sealing ring is a plastic product, the material of the existing sealing ring mainly comprises nylon 66, nylon 610 or nylon 612, etc., the sealing ring material is heated and melted and then flows to an injection mold through a glue injection port, and then is cooled and solidified to be formed and separated from the injection mold.
Based on current sealing washer structure and mould, can meet the sealing washer and glue difficult drawing of patterns influence its normal production on the mould at the sealing washer in-process of moulding plastics, the sealing washer material heats and melts the back and pours into injection mold into and is not full and lead to the sealing washer structure incomplete, and the sealing washer has the burr to influence current collector equipment or battery equipment scheduling problem. Meanwhile, the assembled current collector has the following problems: the negative electrode cover is not matched with the sealing ring tightly enough, so that the situation that a current collector composed of the negative electrode cover and the copper needle moves and even breaks away from the sealing ring in the transportation, use and other processes of the current collector of the battery occurs.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sealing washer of cylindric battery, this sealing washer can solve exist among the prior art the sealing washer glutinous difficult drawing of patterns influence the problem of its normal production on the mould.
A sealing ring of a cylindrical battery comprises a central column and an annular sealing ring body, wherein the outer wall of the central column extends outwards along the circumferential direction of the central column to form the annular sealing ring body, one end, facing a negative electrode cover, of the sealing ring is the lower end of the sealing ring body, the outer periphery of the sealing ring body extends downwards along the circumferential direction of the sealing ring body to form a cylindrical sealing ring flanging, an annular bulge is arranged on the inner wall of the sealing ring flanging along the inner circumference of the inner wall, and the radial distance between the inner wall of the sealing ring flanging and the highest point of the annular bulge is controlled to be 0.05-0.2 mm.
The sealing ring is a plastic product. When the sealing ring is manufactured, the sealing ring material is heated and melted, then flows into the inner cavity of the mold for manufacturing the sealing ring from the glue injection port, is cooled and solidified, and is separated from the injection mold, and finally the formed sealing ring is obtained. The mold for manufacturing the sealing ring generally comprises an upper mold and a lower mold which are arranged oppositely from top to bottom, the lower surface of the upper mold is attached to the upper surface of the sealing ring body during casting molding of the sealing ring, and the upper surface of the lower mold is attached to the lower surface of the sealing ring body. The upper die is upwards separated firstly when the sealing ring is demolded, the sealing ring can be fixed on the lower die due to the design of the annular bulge on the sealing ring, so that the upper die is smoothly demolded, and the force of the sealing ring adhered to the lower die is reduced due to the design of the annular bulge, so that the sealing ring is easily separated from the lower die under the action of external force; moreover, the radial distance between the inner wall of the sealing ring flanging and the highest point of the annular bulge is controlled to be 0.05-0.2 mm, so that the radial distance between the inner wall of the sealing ring flanging and the highest point of the annular bulge is prevented from being smaller than 0.05, and an ideal demoulding effect cannot be achieved; and the radial distance between the inner wall of the flanging of the sealing ring and the highest point of the annular bulge is prevented from being larger than 0.2mm, and when the sealing ring is separated from the lower die under the action of external force, the annular bulge is easily damaged by the die. Therefore, the utility model discloses a sealing washer does benefit to the drawing of patterns, ensures the normal production of sealing washer.
Preferably, the annular bulge, the sealing ring flanging and the sealing ring body are in seamless enclosure to form a negative cover limiting groove. In the specific implementation process, the inner wall of the flanging of the sealing ring, the lower surface of the sealing ring body and the outer wall of the central column are not in clearance enclosing to form an inner cavity of the sealing ring, and a negative electrode cover is coaxially embedded in the inner cavity of the sealing ring when the battery collector is assembled. Preferably, the annular bulge on the sealing ring is positioned below the outer edge part of the negative electrode cover, and the minimum inner diameter of the annular bulge is smaller than the outer diameter of the negative electrode cover, so that the outer edge part of the negative electrode cover is limited in the negative electrode cover limiting groove. When the negative pole lid that will have the copper needle forms the current collector with the equipment of sealing washer, annular protrusion can carry out the axial in the axial outside of negative pole lid and spacing to the negative pole lid, is favorable to judging whether the sealing washer targets in place with the current collector equipment of constituteing by negative pole lid and copper needle to and effectively avoid the battery current collector to take place axial displacement or even break away from between the current collector and the sealing washer of constituteing by negative pole lid and copper needle in transportation, use etc..
In the specific implementation process, a central hole is formed in the central column along the central axis of the central column. Preferably, a cylindrical groove which takes the central hole as the center is formed in the upper end face of the central column, and the diameter of the cylindrical groove is larger than that of the central hole. When the sealing ring is subjected to injection molding, an injection hole of an injection mold coincides with a notch of the cylindrical groove of the sealing ring, the injection hole is positioned at the position of the center column of the sealing ring, and a sealing ring material flows around from the center in a mold cavity of the injection mold, so that the probability of poor injection at a narrow channel (such as an explosion-proof ditch) in the mold cavity can be reduced; the glue injection port is positioned on the end face of the end, deviating from the negative electrode cover, of the central column, so that burrs formed by the glue injection port in a snapping mode are prevented from affecting the matching effect of the current collector and the total height of the current collector, the normal production of a battery sealing process is affected by the large fluctuation of the total height of the current collector, and the control on the total height of the battery during production is not facilitated; moreover, on a collector assembly production line, the sealing ring is often placed on a conveying runway with the end face of the central column, which is far away from one end of the negative cover, facing downwards for conveying, burrs on the end face of the central column, which is far away from one end of the negative cover, can cause uneven placement of the sealing ring, so that the collector cannot be coaxially assembled, the collector has a 'head swinging' phenomenon, and a copper needle during collector assembly is easy to damage a central hole of the sealing ring, so that the sealing performance of the collector is affected; furthermore, the diameter in cylindrical groove is greater than the diameter of centre bore increases the sectional area that the sealing washer material flowed into injection mold's die cavity, makes the sealing washer material can flow to whole die cavity in shorter time, and flows in more evenly, is favorable to the promotion of the efficiency of moulding plastics and reduces the probability that the unsatisfactory incomplete condition of sealing washer structure that leads to of pouring into.
Preferably, the section of the annular protrusion is circular arc-shaped. Use when the sealing washer carries out the tip to the battery box hat and seals, when the open end of anodal box hat was down, battery current collection body kept negative pole lid coaxial arrangement down in the opening of anodal box hat, the lower edge of battery box hat with the turn down rims lower of sealing washer is along equal downwardly extending to the below of the outer edge of negative pole lid, the lower edge incurvate of battery box hat forms battery box hat turn-ups, and drives the lower edge of sealing washer is inwards buckled in step and is formed the sealing washer turn-ups, just the battery box hat turn-ups provide and upwards compress tightly the sealing washer turn-ups and the effort of the outer edge of negative pole lid, thereby make annular bulge compresses tightly the laminating and is in on the lower surface of the outer edge of negative pole lid. The raised section of annular is convex, does benefit to annular protruding with the lower surface laminating of edge portion is more even, inseparable outside the negative pole lid.
A second object of the present invention is to provide a mold for manufacturing the above-mentioned sealing ring, which comprises an upper mold and a lower mold that are disposed opposite to each other, wherein a central groove is formed on the bottom surface of the upper mold, the inner diameter of the lower end opening of the central groove is equal to the outer diameter of the flange of the sealing ring, central through holes are formed in the upper mold and the lower mold along the central axis direction of the sealing ring, a central mold is inserted into the central through hole of the lower mold in a tight fit manner, the upper end of the central mold extends into the central through hole of the upper mold, and an annular glue injection port is formed between the outer wall of the central mold and the wall of the central through hole of the upper mold; the outer diameter of the lower die is equal to the inner diameter of the flange of the sealing ring, an annular auxiliary die is further sleeved outside the lower die, the upper surface of the auxiliary die is lower than the upper surface of the lower die, the inner surface of the central groove of the upper die, the upper surface of the auxiliary die, the outer wall and the upper surface of the lower die and the outer wall of the central die are enclosed together to form a sealing ring injection molding die cavity with the same shape as the sealing ring, and an annular groove matched with the annular protrusion of the sealing ring is formed in the outer wall of the lower die in the sealing ring injection molding die cavity. The mould of the utility model is easy to demould after the sealing ring is injection molded, thus ensuring the normal production of the sealing ring; the sealing ring material flows from the center to the periphery in the mold cavity of the injection mold, so that the probability of poor injection molding at a narrow channel (such as an explosion-proof groove) in the mold cavity can be reduced; burrs formed by breaking the glue injection port cannot influence the matching effect of the current collector and the total height of the current collector; in addition, the design of annular injecting glue mouth can increase the cross-sectional area that the sealing washer material flowed into injection mold's die cavity, makes the sealing washer material can flow to whole die cavity in shorter time, and flows in more evenly, is favorable to the promotion of the efficiency of moulding plastics and reduces and pours into the probability that discontented circumstances that leads to the sealing washer structure into.
Preferably, an annular protrusion is arranged on the inner surface of the central groove of the upper die, is located on the upper die, and is wound around the axial outer side of the lower port of the central through hole in the circumferential direction of the lower port, and the outer diameter of the annular protrusion is smaller than that of the central column of the sealing ring. Preferably, the upper die can move up and down relative to the lower die, so that automatic demolding of the upper die is realized.
Preferably, the auxiliary mold can move up and down relative to the lower mold, so that the formed sealing ring can be automatically taken off from the lower mold.
Drawings
Fig. 1 is a schematic longitudinal sectional view of a seal ring of a cylindrical battery according to the present invention;
fig. 2 is a schematic longitudinal sectional view of a current collector assembled by a seal ring of a cylindrical battery according to the present invention;
fig. 3 is a schematic longitudinal sectional structural view of the mold for manufacturing the sealing ring according to the present invention;
wherein, the chain line in fig. 1-3 is the central axis of the sealing ring, and the direction indicated by the arrow in fig. 3 is the moving direction of the upper die and the auxiliary die during demoulding.
Detailed Description
The best embodiment of the sealing ring for cylindrical battery and the mold for manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings:
as shown in fig. 1, a sealing ring 20 of a cylindrical battery includes a central column 21 and an annular sealing ring body 23 formed by extending an outer wall of the central column 21 outward along a circumferential direction thereof, an end of the sealing ring 20 facing a negative electrode cover 30 is a lower end thereof, an outer periphery of the sealing ring body 23 extends downward along the circumferential direction thereof to form a cylindrical sealing ring flange 22, an annular protrusion 221 is disposed on an inner wall of the sealing ring flange 22 along an inner circumference thereof, and a radial distance H between the inner wall of the sealing ring flange 22 and a highest point of the annular protrusion 221 is controlled to be 0.05-0.2 mm.
As shown in fig. 3, a mold for manufacturing the above-mentioned sealing ring includes an upper mold 11 and a lower mold 12 which are disposed opposite to each other, a central groove is disposed on a bottom surface of the upper mold 11, an inner diameter of a lower end opening of the central groove is equal to an outer diameter of the sealing ring flange 22, a central through hole is disposed on each of the upper mold 11 and the lower mold 12 along a central axis direction of the sealing ring 20, a central mold 14 is inserted into the central through hole of the lower mold 12 in a tight fit manner, an upper end of the central mold 14 extends into the central through hole of the upper mold 11, and an annular glue injection opening 15 is formed between an outer wall of the central mold 14 and a hole wall of the central through hole of the upper mold 11; the outer diameter of the lower die 12 is equal to the inner diameter of the seal ring flanging 22, an annular auxiliary die 13 is further sleeved outside the lower die 12, the upper surface of the auxiliary die 13 is lower than the upper surface of the lower die 12, the inner surface of the central groove of the upper die 11, the upper surface of the auxiliary die 13, the outer wall and the upper surface of the lower die 12 and the outer wall of the central die 14 enclose together to form a seal ring injection molding die cavity 100 with the same shape as the seal ring 20, and an annular groove 121 correspondingly matched with the annular protrusion 221 of the seal ring 20 is formed in the outer wall of the lower die 12 in the seal ring injection molding die cavity 100.
The design of the annular bulge 221 of the sealing ring of the utility model is beneficial to demoulding after the injection molding of the sealing ring; moreover, the radial distance H from the inner wall of the sealing ring flanging 22 to the highest point of the annular bulge 221 is controlled to be 0.05-0.2 mm, so that the radial distance H is prevented from being smaller than 0.05, and an ideal demoulding effect cannot be achieved; and the radial distance H is prevented from being larger than 0.2mm, and when the sealing ring is separated from the lower die 12 under the action of external force, the annular bulge 221 is easily damaged by the die, so that the normal production of the sealing ring is ensured. In addition, the mold of the utility model enables the sealing ring material to flow from the center to the periphery in the injection mold cavity 100, thus reducing the probability of poor injection molding at narrow channels (such as explosion-proof grooves) in the mold cavity 100; burrs formed by the fracture of the glue injection port 15 cannot influence the matching effect of the current collector and the total height of the current collector; in addition, the design of annular injecting glue mouth 15 can increase the sealing washer material and flow into injection mold's die cavity 100's sectional area, makes the sealing washer material can flow to whole die cavity 100 in shorter time, and flows into more evenly, is favorable to the promotion of the efficiency of moulding plastics and reduces and pours into the probability that discontented circumstances that leads to the sealing washer structure into.
The utility model discloses a sealing washer can be as follows the improvement:
(1) The annular protrusion 221, the seal ring flange 22 and the seal ring body 23 are seamlessly enclosed to form a negative cover limiting groove 200. In the specific implementation process, as shown in fig. 2, the inner wall of the sealing ring flange 22, the lower surface of the sealing ring body 23 and the outer wall of the central column 21 are not in clearance fit to form an inner cavity of the sealing ring, and a negative cover 30 is coaxially embedded in the inner cavity of the sealing ring when the battery collector is assembled. Preferably, the annular protrusion 221 of the sealing ring is located below the outer edge 31 of the negative electrode cover 30, and the minimum inner diameter of the annular protrusion 221 is smaller than the outer diameter of the negative electrode cover 30. When the negative electrode cover 30 with the copper needle 40 and the sealing ring 20 are assembled to form the current collector, the annular protrusion 221 can axially limit the negative electrode cover 30 at the axial outer side of the negative electrode cover 30, so that whether the sealing ring 20 and the current collector composed of the negative electrode cover 30 and the copper needle 40 are assembled in place or not can be judged, and axial movement and even separation between the current collector composed of the negative electrode cover 30 and the copper needle 40 and the sealing ring 20 in the transportation, use and other processes of the battery current collector can be effectively avoided;
(2) In the specific implementation process, as shown in fig. 1 and 2, a central hole 211 is formed on the central pillar 21 along the central axis thereof. Preferably, as shown in fig. 1 and 2, a cylindrical groove 212 centered on the central hole 211 is formed on the upper end surface of the central column 21, and the diameter of the cylindrical groove 212 is larger than that of the central hole 211. When the sealing ring 20 of the utility model is injection molded, the glue injection port 15 of the mold used for injection molding is superposed with the notch of the cylindrical groove 212 of the sealing ring 20, and the glue injection port 15 is positioned on the end face of the central column 21 which is away from one end of the negative electrode cover 30, so that the burr formed by the breakage of the glue injection port 15 is prevented from influencing the matching effect of the current collector and the total height of the current collector; moreover, on the assembly production line of the current collector, the sealing ring 20 often keeps the end face of the center post 21, which is away from one end of the negative cover 30, downwards placed on a conveying runway for conveying, the burr on the end face of the center post 21, which is away from one end of the negative cover 30, can cause uneven placement of the sealing ring 20, so that the current collector cannot be coaxially assembled, the current collector has a 'head swinging' phenomenon, and the copper needle 40 during assembly of the current collector also easily damages the center hole 211 of the sealing ring to influence the tightness of the current collector, the utility model discloses a setting of the cylindrical groove 212, so that the burr formed by breaking the glue injection port 15 is positioned in the cylindrical groove 212 and is not more than the end face of the center post 21, which is away from one end of the negative cover 30, and the assembly of the current collector cannot be influenced; in addition, the diameter of the cylindrical groove 212 of the present invention is larger than the diameter of the central hole 211, so as to increase the sectional area of the sealing ring material flowing into the mold cavity 100 of the injection mold, so that the sealing ring material can flow into the whole mold cavity 100 in a shorter time, and the sealing ring material flows more uniformly, thereby facilitating the improvement of the injection molding efficiency and reducing the probability of incomplete sealing ring structure caused by insufficient injection;
(3) As shown in fig. 1 and 2, the cross section of the annular protrusion 221 is circular arc. Use when the sealing washer carries out the tip to the battery box hat and seals, when the open end of anodal box hat down, the battery current collector keeps negative pole lid 30 coaxial arrangement down in the lower extreme opening of anodal box hat, the lower edge of battery box hat with the lower edge of sealing washer turn-ups 22 all downwardly extending to the below of the outer edge 31 of negative pole lid, the lower edge incurvate of battery box hat forms battery box hat inturned, and drives the turn-ups is formed to the turn-ups along incurvate synchronous buckling down of sealing washer turn-ups, just battery box hat inturned provides and upwards compresses tightly the sealing washer inturned and the effort of the outer edge 31 of negative pole lid, thereby makes annular arch 221 compresses tightly the laminating and is in on the lower surface of the outer edge 31 of negative pole lid. The section of the annular protrusion 221 is arc-shaped, so that the annular protrusion 221 and the lower surface of the outer edge part 31 of the negative cover are attached more uniformly and tightly.
The utility model discloses a mould for making above-mentioned sealing washer can be as follows improvement:
(1) As shown in fig. 3, an annular protrusion 111 is disposed on an inner surface of the central groove of the upper mold 11, the annular protrusion 111 is located on an axial outer side of a lower port of the central through hole of the upper mold 11 and circumferentially arranged around the lower port, and an outer diameter of the annular protrusion 111 is smaller than an outer diameter of a central column 21 of the sealing ring, and precisely because of the existence of the annular protrusion 111 on the upper mold 11, the cylindrical groove 212 is formed on an upper end surface of the central column 21 of the sealing ring 20, so that a burr formed by breaking of the glue injection port does not exceed an end surface of the central column, which is away from one end of the negative electrode cover, and does not affect assembly of the current collector;
(2) As shown in fig. 3, the upper mold 11 is movable up and down with respect to the lower mold 12, and automatic mold release of the upper mold 11 is realized. The lifting mechanism for driving the upper mold 11 to move up and down relative to the lower mold 12 may be any conventional lifting mechanism (e.g., a cylinder, an oil cylinder, a screw nut assembly, etc.).
(3) As shown in fig. 3, the auxiliary mold 13 is movable up and down with respect to the lower mold 12, and the molded gasket is automatically removed from the lower mold 12. The lifting mechanism for driving the auxiliary mold 13 to move up and down relative to the lower mold 12 may be any conventional lifting mechanism (e.g., a cylinder, an oil cylinder, a screw nut assembly, etc.).
The utility model discloses a cylindric battery's sealing washer 20 and the mould that is used for making sealing washer 20 all not only are applicable to alkaline battery, still are applicable to other cylindric batteries.
The utility model discloses right the utility model belongs to the technical field of the ordinary skilled person, do not deviating from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (9)
1. The utility model provides a sealing washer of cylindric battery, includes the center post with the outer wall of center post outwards extends and the annular sealing washer body that forms along its circumference, with the orientation negative pole lid one end of sealing washer is its lower extreme, the outer peripheral edge of sealing washer body forms the turn-ups of cylindric sealing washer along its circumference downwardly extending, its characterized in that: an annular bulge is arranged on the inner wall of the flanging of the sealing ring along the inner circumference of the flanging, and the radial distance between the inner wall of the flanging of the sealing ring and the highest point of the annular bulge is controlled to be 0.05-0.2 mm.
2. The gasket ring for a cylindrical battery according to claim 1, wherein: the annular bulge, the sealing ring flanging and the sealing ring body are in seamless enclosure to form a negative cover limiting groove.
3. The gasket ring for a cylindrical battery according to claim 2, wherein: the turn-down inner wall of sealing washer the lower surface of sealing washer body with the inner chamber that forms the sealing washer is enclosed to the outer wall of center post seamless, and a negative pole lid is coaxial when the equipment battery current collector is embedded in the inner chamber of sealing washer, on the sealing washer the annular bulge is located the below of the outer edge portion of negative pole lid, just the bellied minimum internal diameter of annular is less than the external diameter of negative pole lid makes the outer edge portion of negative pole lid spacing in negative pole lid spacing inslot.
4. The gasket ring for a cylindrical battery according to claim 1, wherein: the central column is provided with a central hole along the central axis thereof, the upper end surface of the central column is provided with a cylindrical groove which takes the central hole as the center, and the diameter of the cylindrical groove is larger than that of the central hole.
5. The gasket ring for a cylindrical battery according to claim 1, wherein: the section of the annular bulge is arc-shaped.
6. A mold for producing a gasket for a cylindrical battery according to any one of claims 1 to 5, characterized in that: the upper die and the lower die are arranged oppositely, a central groove is formed in the bottom surface of the upper die, the inner diameter of an opening at the lower end of the central groove is equal to the outer diameter of a flanging of the sealing ring, central through holes are formed in the upper die and the lower die along the central axis direction of the sealing ring, a central die is inserted in the central through hole of the lower die in a tight fit manner, the upper end of the central die extends into the central through hole of the upper die, and an annular glue injection port is formed between the outer wall of the central die and the hole wall of the central through hole of the upper die; the outer diameter of the lower die is equal to the inner diameter of the flange of the sealing ring, an annular auxiliary die is further sleeved outside the lower die, the upper surface of the auxiliary die is lower than the upper surface of the lower die, the inner surface of the central groove of the upper die, the upper surface of the auxiliary die, the outer wall and the upper surface of the lower die and the outer wall of the central die are enclosed together to form a sealing ring injection molding die cavity with the same shape as the sealing ring, and an annular groove matched with the annular bulge of the sealing ring is formed in the outer wall of the lower die in the sealing ring injection molding die cavity.
7. The mold for producing a gasket for a cylindrical battery according to claim 6, wherein: an annular bulge is arranged on the inner surface of the central groove of the upper die, the annular bulge is located on the axial outer side of the lower port of the central through hole of the upper die and is circumferentially arranged around the lower port, and the outer diameter of the annular boss is smaller than that of the central column of the sealing ring.
8. The mold for producing a gasket for a cylindrical battery according to claim 6, wherein: the upper die is movable up and down relative to the lower die.
9. The mold for producing a gasket for a cylindrical battery according to claim 6, wherein: the auxiliary mold is movable up and down with respect to the lower mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221660805.5U CN217606927U (en) | 2022-06-30 | 2022-06-30 | Sealing ring of cylindrical battery and mold for manufacturing sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221660805.5U CN217606927U (en) | 2022-06-30 | 2022-06-30 | Sealing ring of cylindrical battery and mold for manufacturing sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217606927U true CN217606927U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221660805.5U Active CN217606927U (en) | 2022-06-30 | 2022-06-30 | Sealing ring of cylindrical battery and mold for manufacturing sealing ring |
Country Status (1)
| Country | Link |
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| CN (1) | CN217606927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885356A (en) * | 2022-11-15 | 2023-10-13 | 惠州市威源电子有限公司 | Integrated injection molding process for sealing ring of button cell cover of zinc negative electrode alkaline electrolyte |
-
2022
- 2022-06-30 CN CN202221660805.5U patent/CN217606927U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885356A (en) * | 2022-11-15 | 2023-10-13 | 惠州市威源电子有限公司 | Integrated injection molding process for sealing ring of button cell cover of zinc negative electrode alkaline electrolyte |
| CN116885356B (en) * | 2022-11-15 | 2024-01-02 | 惠州市威源电子有限公司 | Sealing ring integrated injection molding machine and process for battery cover of zinc negative electrode alkaline electrolyte |
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