CN114905699A

CN114905699A - Battery sealing washer hot runner mold structure

Info

Publication number: CN114905699A
Application number: CN202210599367.4A
Authority: CN
Inventors: 冯挺
Original assignee: Ningbo Yunneng New Material Co Ltd
Current assignee: Ningbo Yunneng New Material Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-16

Abstract

A battery sealing ring hot runner mold structure comprises a demoulding part, a center pillar assembly, a cavity base and a core base, wherein a cavity group insert is arranged on one side, facing the core base, of the cavity base, and is provided with a forming cavity and a feeding hole communicated with the forming cavity; the core base is provided with a forming part used for entering the forming cavity, the demoulding part is connected to the core base in a sliding mode and used for pushing a finished product to be separated from the forming part, the forming part is provided with a through hole communicated with the forming cavity, the center column assembly comprises a center column and a power piece, one end of the center column is connected to the power piece, the other end of the center column penetrates through the through hole and is inserted into the forming cavity, and the power piece is used for driving the center column to abut against the feeding hole to control the feeding hole to be opened and closed. Above-mentioned scheme has not only promoted the machining precision of one-tenth die cavity through split type design, has realized compact structure through setting up of center pillar subassembly moreover, possesses better practicality.

Description

Battery sealing washer hot runner mold structure

Technical Field

The invention relates to the technical field of battery seal ring processing molds, in particular to a battery seal ring hot runner mold structure.

Background

The battery sealing ring is a leak-proof or explosion-proof component assembled inside the battery, and a through hole for the core rod to pass through is generally formed in the middle of the battery sealing ring. For small dry cells such as LR8D425, the size of the sealing ring tends to be small. In the processing process of the sealing ring, in consideration of processing precision, a cold runner mold is mostly adopted for processing production at present, and various quality problems, such as whitening of an explosion-proof groove of the sealing ring, flow marks, poor contact of the outer wall of the sealing ring and the like, can occur in the processing production process, so that potential safety hazards are easily formed. In addition, the cold runner mold can generate a material frame in the processing production process, and the material return cannot be used, so that the production cost is high.

Disclosure of Invention

The invention aims to solve the technical problems that the processing production quality of a small-size sealing ring in the prior art cannot be guaranteed and the production cost is high.

In order to solve the problems, the invention provides a battery sealing ring hot runner mold structure which comprises a demoulding part, a center pillar assembly, a cavity base and a core base, wherein a cavity group insert is arranged on one side of the cavity base, which faces the core base, and is provided with a forming cavity and a feeding hole communicated to the forming cavity; the core base is provided with a forming part used for entering the forming cavity, the demolding part is connected to the core base in a sliding mode and used for pushing a finished product to be detached from the forming part, the forming part is provided with a through hole communicated to the forming cavity, the center column assembly comprises a center column and a power piece, one end of the center column is connected to the power piece, the other end of the center column penetrates through the through hole and is inserted into the forming cavity, and the power piece is used for driving the center column to abut against the feeding hole to control the feeding hole to be opened and closed.

According to the scheme, the high-precision cavity group insert can be pre-processed, and then the cavity group insert is installed on the cavity base, so that the precision of the molding cavity is effectively improved compared with the mode of directly processing the molding cavity on the cavity base in the prior art, and only the cavity group insert needs to be replaced when products of other models need to be produced, so that the universality is effectively improved; simultaneously because the setting of center pillar subassembly for the switching of feed inlet not only can be controlled to the center pillar, can get into the shaping chamber moreover and carry out moulding to the raw materials in the shaping chamber, form the through hole that supplies the plug to pass promptly on off-the-shelf seal ring, design benefit and compact structure possess better practicality

Preferably, the cavity base is located above the core base, and the feed hole is located above the through hole, so that the central column can be more stably opened and closed when moving along the through hole under the driving of the power piece.

Preferably, the cavity group insert comprises an annular feeding insert, a forming insert and a cavity plate, the feeding hole is an inner ring of the feeding insert, a mounting groove is formed in the lower side surface of the cavity base, the feeding insert and the forming insert are assembled in the mounting groove from top to bottom, the cavity plate is detachably connected to the lower side surface of the cavity base, and the inner ring side of the cavity plate is abutted to the lower side surface of the forming insert, so that the feeding insert, the forming insert and the cavity plate can be independently processed, and the accuracy is better; on the other hand, the feeding insert and the molding insert can be replaced by disassembling and assembling the cavity plate, and the operation is simple and convenient.

Preferably, the inside of the cavity base is provided with a storage cavity, and the storage cavity is communicated to the feeding hole, so that raw materials in the storage cavity can stably flow into the forming cavity from the feeding hole.

Preferably, the demolding part is annular and is sleeved on the outer side of the upper part of the core base, and the inner ring side of the demolding part is positioned below the forming cavity, so that stable demolding of a finished product is realized.

Preferably, the upper part of the core base is tapered from bottom to top to form a tapered support part, and the inner ring of the demolding part is a tapered surface matched with the support part, so that the demolding part can be positioned relative to the core base when the tapered surface is attached to the support part, and the use is more convenient.

Preferably, the core base comprises a core outer tube and a core inner part detachably inserted into the inner side of the core outer tube, and the through hole is formed in the middle of the core inner part, so that the core inner part can be replaced to adapt to central columns with different sizes, and the operation is simple and convenient.

Preferably, the hole wall of the through hole is provided with a positioning groove, the side wall of the central column is provided with a raised positioning boss, and the central column abuts against and blocks the feed hole when the positioning boss is clamped to the upper part of the positioning groove, so that the central column can stably block the feed hole.

Preferably, the power part comprises a piston and a cylinder seat for driving the piston to lift, and the upper side surface of the piston is provided with a slot for inserting the central column, so that the stable movement and operation of the central column are ensured under the driving of the piston, and the replacement and maintenance are convenient.

Drawings

FIG. 1 is a schematic cross-sectional view of a battery seal ring hot runner mold configuration;

FIG. 2 is a diagram of a cavity base of a battery seal ring hot runner mold structure shown disengaged from a core base;

FIG. 3 is a diagram of a release member of a battery seal ring hot runner mold structure shown disengaged from a core base;

fig. 4 is a partially enlarged schematic view of the area a in fig. 1.

Description of reference numerals:

1. a cavity base; 101. mounting grooves; 102. a material storage cavity; 2. a core base; 201. a molding section; 210. a core outer tube; 211. a support portion; 220. a core inner; 221. a through hole; 222. a positioning groove; 3. assembling a mold cavity and an insert; 310. feeding the insert; 311. a feed port; 320. forming the insert; 330. a cavity plate; 340. a molding cavity; 4. a king post assembly; 410. a central column; 411. positioning the boss; 420. a power member; 421. a cylinder block; 422. a piston; 423. a slot; 5. and (4) demoulding the mould.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that all the directional indicators (such as up, down, left, right, front, back, inside, and outside) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Referring to fig. 1-4, a hot runner mold structure for a battery sealing ring according to an embodiment of the present invention includes a demolding part 5, a center pillar assembly 4, a cavity base 1 and a core base 2, wherein a cavity insert 3 is disposed on one side of the cavity base 1 facing the core base 2, and the cavity insert 3 includes a molding cavity 340 and a feeding hole 311 communicating with the molding cavity 340; the core base 2 is provided with a forming part 201 for entering the forming cavity 340, the demolding part 5 is connected to the core base 2 in a sliding mode and used for pushing a finished product to be detached from the forming part 201, the forming part 201 is provided with a through hole 221 communicated to the forming cavity 340, the center pillar assembly 4 comprises a center pillar 410 and a power part 420, one end of the center pillar 410 is connected to the power part 420, the other end of the center pillar passes through the through hole 221 and is inserted into the forming cavity 340, and the power part 420 is used for driving the center pillar 410 to abut against the feeding hole 311 so as to control the opening and closing of the feeding hole 311.

When the device is used, the mold core base 2 is kept fixed, the mold cavity base 1 is moved towards the mold core base 2 until the mold cavity base 1 and the mold core base are abutted, the molding cavity 340 is sealed by the molding part 201 at the moment, after raw materials enter the molding cavity 340 from the feeding hole, the power part 420 drives the central column 410 to abut to the feeding hole to seal the feeding hole, after the raw materials in the molding cavity 340 form finished products, the mold cavity base 1 is separated from the mold core base 2, and then the demolding part 5 drives the finished products to be separated from the molding part 201 to complete demolding. According to the scheme, the high-precision cavity set insert 3 can be machined in advance, and then the cavity set insert 3 is installed on the cavity base 1, so that the precision of the molding cavity 340 is effectively improved compared with the mode that the molding cavity 340 is directly machined on the cavity base 1 in the prior art, and only the cavity set insert 3 needs to be replaced when products of other models need to be produced, so that the universality is effectively improved; simultaneously because center pillar subassembly 4's setting for center pillar 410 not only can control the switching of feed inlet, can get into the molding chamber 340 moreover and carry out the moulding to the raw materials in the molding chamber 340, forms the through hole that supplies the plug to pass promptly on off-the-shelf seal ring, design benefit and compact structure possess better practicality

In this embodiment, the cavity base 1 is located above the core base 2, the feeding hole 311 is located above the through hole 221, and the feeding hole and the through hole 221 are coaxially arranged, so that the central column 410 can better and stably realize opening and closing of the feeding hole 311 when moving along the through hole 221 under the driving of the power member 420.

In this embodiment, the cavity set insert 3 includes a feeding insert 310, a forming insert 320 and a cavity plate 330, which are all annular, the feeding hole 311 is an inner ring of the feeding insert 310, the lower side surface of the cavity base 1 is provided with a mounting groove 101, the feeding insert 310 and the forming insert 320 are assembled in the mounting groove 101 from top to bottom, and the cavity plate 330 is detachably connected to the lower side surface of the cavity base 1 through bolts. The inner ring diameter of the cavity plate 330 is smaller than the outer ring diameter of the molding insert 320 such that the inner ring side of the cavity plate 330 abuts the underside of the molding insert 320. After the structure is adopted, on one hand, the feeding insert 310, the forming insert 320 and the cavity plate 330 can be independently processed, and the precision is better; on the other hand, the feeding insert 310 and the molding insert 320 can be replaced by disassembling and assembling the cavity plate 330, and the operation is simple and convenient.

The storage cavity 102 is arranged inside the cavity base 1, and the storage cavity 102 is communicated to the feeding hole 311, so that raw materials in the storage cavity 102 can stably flow into the forming cavity 340 from the feeding hole 311.

In this embodiment, the demolding member 5 is annular and is sleeved outside the upper portion of the core base 2, and the inner annular side of the demolding member 5 is located below the molding cavity 340, so as to realize stable demolding of the finished product. Furthermore, the upper part of the core base 2 is tapered from bottom to top to form a tapered support part 211, and the inner ring of the demolding part 5 is a tapered surface matched with the support part 211, so that the demolding part 5 can be positioned relative to the core base 2 when the tapered surface is attached to the support part 211, and the use is more convenient.

As an optimization of the above embodiment, the core base 2 includes an outer core tube 210 and an inner core tube 220 inserted into the outer core tube 210, the through hole 221 is disposed in the middle of the inner core tube 220, and the bottom of the outer core tube 210 is provided with an opening to facilitate the assembly and disassembly of the inner core tube, so that the inner core tube 410 with different sizes can be adapted by replacing the inner core tube 220, and the operation is simple and convenient. Further, the hole wall of the through hole 221 is provided with a positioning groove 222, and the positioning groove 222 is in a shape of a cone with a small upper part and a big lower part; the lateral wall of center post 410 is equipped with bellied location boss 411, and center post 410 butt and shutoff feed port 311 when location boss 411 joint is to the upper portion of positioning groove 222 to guarantee that center post 410 is more stable to the shutoff of feed port 311.

In this embodiment, the power member 420 includes a piston 422 and a cylinder seat 421 for driving the piston 422 to ascend and descend, and an upper side surface of the piston 422 is provided with an insertion slot 423 for inserting the center post 410, so as to ensure stable movement and operation of the center post 410 under the driving of the piston 422, and facilitate replacement and maintenance. It should be understood that the power member 420 may be replaced by other means as long as the driving of the central column 410 is achieved.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.

Claims

1. The hot runner mold structure for the battery sealing ring is characterized by comprising a demoulding part (5), a center pillar component (4), a cavity base (1) and a core base (2), wherein a cavity group insert (3) is arranged on one side, facing the core base (2), of the cavity base (1), and the cavity group insert (3) is provided with a molding cavity (340) and a feeding hole (311) communicated with the molding cavity (340); the core base (2) is provided with a forming part (201) used for entering the forming cavity (340), the demolding part (5) is connected to the core base (2) in a sliding mode and used for pushing a finished product to be detached from the forming part (201), the forming part (201) is provided with a through hole (221) communicated with the forming cavity (340), the center pillar assembly (4) comprises a center pillar (410) and a power piece (420), one end of the center pillar (410) is connected to the power piece (420), the other end of the center pillar penetrates through the through hole (221) and is inserted into the forming cavity (340), and the power piece (420) is used for driving the center pillar (410) to abut against the feeding hole (311) to control the opening and closing of the feeding hole (311).

2. The battery seal ring hot runner mold structure according to claim 1, wherein: the cavity base (1) is located above the core base (2), and the feed hole (311) is located above the through hole (221).

3. The battery seal ring hot runner mold structure according to claim 2, wherein: die cavity group mold insert (3) are including being annular feeding mold insert (310), shaping mold insert (320) and die cavity board (330), feed port (311) are promptly the inner ring of feeding mold insert (310), the downside of die cavity base (1) is equipped with mounting groove (101), feeding mold insert (310) and shaping mold insert (320) along from the top down assemble in mounting groove (101), die cavity board (330) can be dismantled and be connected to the downside of die cavity base (1), the interior ring side butt of die cavity board (330) connects to the downside of shaping mold insert (320).

4. The battery seal ring hot runner mold structure according to claim 2, wherein: the inside of the cavity base (1) is provided with a storage cavity (102), and the storage cavity (102) is communicated to the feeding hole (311).

5. The battery seal ring hot runner mold structure according to claim 2, wherein: the demolding part (5) is annular and is sleeved on the outer side of the upper part of the core base (2), and the inner ring side of the demolding part (5) is located below the forming cavity (340).

6. The battery seal ring hot runner mold structure according to claim 2, wherein: the upper part of the core base (2) is gradually reduced from bottom to top to form a conical supporting part (211), and the inner ring of the demoulding part (5) is a conical surface matched with the supporting part (211).

7. The battery seal ring hot runner mold structure according to claim 2, wherein: the core base (2) comprises a core outer tube (210) and a core inner piece (220) which is detachably inserted into the inner side of the core outer tube (210), and the through hole (221) is formed in the middle of the core inner piece (220).

8. The battery seal ring hot runner mold structure according to claim 7, wherein: the hole wall of the through hole (221) is provided with a positioning groove (222), the side wall of the central column (410) is provided with a raised positioning boss (411), and the central column (410) is abutted and blocked on the feed hole (311) when the positioning boss (411) is clamped to the upper part of the positioning groove (222).

9. The battery seal ring hot runner mold structure according to claim 2, wherein: the power part (420) comprises a piston (422) and a cylinder seat (421) for driving the piston (422) to lift, and the upper side surface of the piston (422) is provided with a slot (423) for inserting the central column (410).