CN219486434U - Sealing ring pouring gate structure and sealing ring injection mold - Google Patents

Abstract

The application provides a sealing washer runner structure and sealing washer injection mold. The sealing ring gate structure comprises a nozzle, a first gate forming part and a second gate forming part, wherein the first gate forming part forms a clearance channel, a part of the nozzle is positioned in the clearance channel and sleeved with the first gate forming part, a hot runner is formed at one end of the nozzle, and the second gate forming part is opposite to the first gate forming part and is arranged at intervals to form a face gate which is communicated with the hot runner. Because the pouring gate is a surface pouring gate, the plastic solution entering the forming cavity is only one, the welding mark in the forming cavity is reduced, the defect of the battery sealing ring is further reduced, and the strength of the battery sealing ring is further improved. Because the heating structure is arranged in the hot nozzle, the plastic solution in the hot runner and the surface gate are in a higher-temperature state, so that the fluidity of the plastic solution in the hot runner and the surface gate is stronger, and the filling efficiency of the forming cavity is improved.

Description

Sealing ring pouring gate structure and sealing ring injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to a gate structure and an injection mold.

Background

The battery sealing ring is arranged on the battery to seal the battery, and the battery sealing ring plays a decisive role in the leakage prevention and explosion prevention safety performance of the battery.

The battery sealing ring is an injection molding part, and in order to improve the fluidity of a plastic solution, a traditional injection mold adopts a multi-point glue feeding point gate.

However, due to the adoption of the dispensing opening with multi-point glue feeding, a plurality of plastic solutions are welded in a product cavity, so that more welding marks are formed in the cavity, and the strength of the battery sealing ring is weaker, for example, the technical scheme disclosed in the patent application publication No. CN 201721185765.2.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a pouring gate structure and an injection mold which enable welding marks to be fewer and further improve the strength of a battery sealing ring.

The aim of the utility model is realized by the following technical scheme:

the utility model provides a sealing washer runner structure, includes nozzle, first runner shaping spare and second runner shaping spare, first runner shaping spare forms keeps away the position passageway, the part of nozzle is located keep away the position passageway and in first runner shaping spare cup joints, the one end of nozzle is formed with the hot runner, the second runner shaping spare with first runner shaping spare is relative and the interval sets up, in order to form the face runner, the face runner with the hot runner is linked together.

In one embodiment, the face gate has a thickness of 0.15 mm to 0.25 mm.

In one embodiment, the face gate has a thickness of 0.2 millimeters.

In one embodiment, an annular material packet groove is formed on one end surface of the first gate molding piece, which is opposite to the second gate molding piece, the annular material packet groove is located at the periphery of the face gate, and the annular material packet groove is communicated with the face gate.

In one embodiment, a cold material well is formed on a side of the second gate molding adjacent to the nozzle, the cold material well being disposed opposite to and in communication with the hot runner.

The sealing ring injection mold comprises a molding assembly and the sealing ring gate structure in any embodiment, wherein the molding assembly is provided with a molding cavity, and the molding cavity is communicated with the periphery of the face gate.

In one embodiment, the molding assembly includes a female mold and a male mold, the female mold is sleeved on the first gate molding member, the female mold is formed with a molding groove, the male mold is sleeved on the second gate molding member, and a part of the male mold is located in the molding groove, so that the male mold and the female mold are closed and form a molding cavity together.

In one embodiment, the second gate molding member includes a gate molding body and an in-mold cutter, the in-mold cutter is slidably sleeved on the gate molding body, and the in-mold cutter and the gate molding body are disposed at intervals opposite to the first gate molding member so as to form the face gate; the male die is sleeved on the in-die cutter.

In one embodiment, the sealing ring injection mold further comprises a stripper plate, the stripper plate is sleeved on the male die, and the stripper plate is further abutted to the female die and is arranged opposite to the forming cavity.

In one embodiment, the sealing ring injection mold further comprises a driving mechanism, and the driving mechanism is respectively in transmission connection with the in-mold cutter and the stripper plate.

Compared with the prior art, the utility model has at least the following advantages:

according to the sealing ring gate structure, as the gate is the face type gate, only one plastic solution enters the forming cavity, welding marks in the forming cavity are reduced, defects of the battery sealing ring are further reduced, and strength of the battery sealing ring is further improved. Because the heating structure is arranged in the hot nozzle, the plastic solution in the hot runner and the surface gate are in a higher-temperature state, so that the fluidity of the plastic solution in the hot runner and the surface gate is stronger, and the filling efficiency of the forming cavity is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a seal ring injection mold according to an embodiment;

FIG. 2 is another schematic structural view of the injection mold of the seal ring shown in FIG. 1;

FIG. 3 is a cross-sectional view of the seal ring injection mold of FIG. 2 taken along line A-A;

FIG. 4 is a schematic view of a further partial structure of the injection mold of the seal ring shown in FIG. 1;

FIG. 5 is a cross-sectional view of the seal ring injection mold of FIG. 4 taken along line B-B;

FIG. 6 is an enlarged view of the seal ring injection mold of FIG. 5 at C;

fig. 7 is a schematic view of the structure of an in-mold cutter of the seal ring injection mold shown in fig. 1.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The application provides a sealing washer runner structure, including nozzle, first runner shaping spare and second runner shaping spare, first runner shaping spare forms keeps away the position passageway, and the part of nozzle is located keeps away the position passageway and cup joints in first runner shaping spare, and the one end of nozzle is formed with the hot runner, and second runner shaping spare is relative and the interval sets up with first runner shaping spare to form face formula runner, face formula runner is linked together with the hot runner.

The application also provides a sealing washer injection mold, including shaping subassembly and foretell sealing washer runner structure, shaping subassembly is formed with the shaping die cavity, and the shaping die cavity is linked together with the periphery of face formula runner.

According to the sealing ring pouring gate structure and the sealing ring injection mold, as the pouring gate is the face type pouring gate, only one plastic solution enters the forming cavity, welding marks in the forming cavity are reduced, defects of the battery sealing ring are further reduced, and strength of the battery sealing ring is further improved. Because the heating structure is arranged in the hot nozzle, the plastic solution in the hot runner and the surface gate are in a higher-temperature state, so that the fluidity of the plastic solution in the hot runner and the surface gate is stronger, and the filling efficiency of the forming cavity is improved.

For better understanding of the technical solutions and advantageous effects of the present application, the following details are further described with reference to specific embodiments:

as shown in fig. 1 to 6, a seal ring injection mold 10 of an embodiment includes a seal ring gate structure 100, the seal ring gate structure 100 being formed with a face gate 101, and a molding assembly 200, the molding assembly 200 being formed with a molding cavity 201, the molding cavity 201 being in communication with a periphery of the face gate 101.

As shown in fig. 5 and 6, in one embodiment, the seal ring gate structure 100 includes a nozzle 110, a first gate molding member 120 and a second gate molding member 130, the first gate molding member 120 forms a clearance channel 121, a portion of the nozzle 110 is located in the clearance channel 121 and is sleeved with the first gate molding member 120, a hot runner 111 is formed at one end of the nozzle 110, and the second gate molding member 130 is opposite to and spaced from the first gate molding member 120 to form a surface gate 101, where the surface gate 101 is in communication with the hot runner 111. In this embodiment, when the seal ring gate structure 100 is operated, the plastic solution flows through the hot runner 111 and the face gate 101 in order, and finally fills the molding cavity 201 to form the battery seal ring 20 in the molding cavity 201.

In the sealing ring gate structure 100, since the gate is the face gate 101, only one plastic solution enters the molding cavity 201, so that the weld mark in the molding cavity 201 is reduced, the defect of the battery sealing ring 20 is further reduced, and the strength of the battery sealing ring 20 is further improved. Because the heating structure is arranged in the hot nozzle, the plastic solution in the hot runner 111 and the surface type pouring gate 101 are in a higher-temperature state, so that the fluidity of the plastic solution in the hot runner 111 and the surface type pouring gate 101 is higher, and the filling efficiency of the forming cavity 201 is improved.

As shown in fig. 6, in one embodiment, the thickness of the face gate 101 is 0.15 mm to 0.25 mm, reducing the material in the face gate 101.

As shown in fig. 6, in one embodiment, the thickness of the face gate 101 is 0.2 millimeters, reducing the material within the face gate 101.

It will be appreciated that due to the thinner thickness of the face gate 101, after injection molding is completed, the gate material in the face gate 101 will cool at a faster rate, resulting in a higher difficulty in separating the battery seal 20 from the gate material, and also reducing the lifetime of the cutter.

Thus, as shown in fig. 6, in one of the embodiments, an annular pocket 122 is formed at an end of the first gate molding member 120 opposite to the second gate molding member 130, the annular pocket 122 is located at the periphery of the face gate 101, and the annular pocket 122 communicates with the face gate 101. In this embodiment, when injection molding, the plastic solution passes through the hot runner 111, the face gate 101, and the annular pocket 122 in this order, and after the annular pocket 122 is filled with the plastic solution, the plastic solution flows from the face gate 101 into the molding cavity 201 to form the battery seal ring 20 in the molding cavity 201. The annular ladle groove 122 is internally provided with a ladle, the surface type pouring gate 101 is internally provided with a pouring gate material, and the annular ladle groove 122 is positioned at the periphery of the surface type pouring gate 101 and communicated with the surface type pouring gate 101, so that the ladle is connected at the periphery of the pouring gate material, the ladle is further enabled to prolong the cooling time at the periphery of the pouring gate material, and the cutter can cut the periphery of the pouring gate material before the periphery of the pouring gate material is completely cooled, so that the battery sealing ring 20 is separated from the pouring gate material.

The overall glue amount of the battery sealing ring 20 is small, and the glue position is thin, so that the adverse effect of cold materials on the battery sealing ring 20 is large. In order to reduce the influence of the cold material on the battery sealing ring 20, as shown in fig. 6, in one embodiment, a cold material well 1301 is formed on one side of the second gate molding member 130 adjacent to the nozzle 110, and the cold material well 1301 is disposed opposite to and in communication with the hot runner 111, so that the cold material well 1301 is used for accommodating the front cold material, and adverse effects of the front cold material on the strength of the product, i.e., the battery sealing ring 20 are avoided.

As shown in fig. 5 and 6, in one embodiment, the molding assembly 200 includes a female mold 210 and a male mold 220, the female mold 210 is sleeved on the first gate molding member 120, the female mold 210 is formed with a molding groove 211, the male mold 220 is sleeved on the second gate molding member 130, and a portion of the male mold 220 is located in the molding groove 211, so that the male mold 220 and the female mold 210 are closed and jointly form a molding cavity 201.

As shown in fig. 6, in one embodiment, a fastening groove 221 is formed on the outer side of the male die 220, and the fastening groove 221 is located in the forming groove 211 and communicates with the forming groove 211. In this embodiment, after the plastic solution fills the molding cavity 201, the battery seal ring 20 is fastened in the fastening groove 221, so that the battery seal ring 20 is fastened in the male mold 220, which improves the connection strength between the battery seal ring 20 and the male mold 220, and avoids the battery seal ring 20 being taken away by the female mold 210 when the mold is opened, i.e. ensures that the battery seal ring 20 remains on the male mold 220 after the mold is opened, so as to perform discharging on the battery seal ring 20, i.e. improve the convenience of discharging.

As shown in fig. 6, further, the fastening groove 221 is an annular groove, and the fastening groove 221 is circumferentially disposed along the male mold 220, so that the battery seal ring 20 is fastened on the male mold 220 more firmly after being molded. Further, the groove wall of the fastening groove 221 is an arc surface, so that the battery seal ring 20 is easily removed, i.e. the battery seal ring 20 is easily pushed away from the male mold 220.

As shown in fig. 6, in one embodiment, the second gate molding member 130 includes a gate molding body 131 and an in-mold cutter 132, the in-mold cutter 132 is slidably sleeved on the gate molding body 131, and the in-mold cutter 132 and the gate molding body 131 are disposed opposite to the first gate molding member 120 at a distance to form the face gate 101. The male die 220 is sleeved on the in-die cutter 132. In the present embodiment, after the battery seal ring 20 in the molding cavity 201 is cooled and molded, the in-mold cutter 132 slides on the gate molding body 131 to cut off the connection between the battery seal ring 20 and the gate material, so as to separate the battery seal ring 20 from the gate material. Because the in-mold cutter 132 is arranged in the sealing ring injection mold 10, the separation operation of the battery sealing ring 20 and the pouring gate material is performed in the mold, namely, the separation of the battery sealing ring 20 and the pouring gate material is not required to be performed outside the mold, and the efficiency and convenience of the separation of the battery sealing ring 20 and the pouring gate material are improved.

As shown in fig. 6, further, the gate molding body 131 is formed with a first molding surface 1311 adjacent to one end of the first gate molding member 120, the in-mold cutter 132 is formed with a second molding surface 1321 adjacent to one end of the first gate molding member 120, the first molding surface 1311 is connected with the second molding surface 1321, and the first molding surface 1311, the second molding surface 1321, and the first gate molding member 120 collectively enclose the face-type gate 101.

As shown in fig. 5 and 7, in one embodiment, the in-mold cutter 132 includes a connecting post 132a and a ring cutter 132b, the ring cutter 132b is fixedly connected to one end of the connecting post 132a, the connecting post 132a and the ring cutter 132b are both slidably sleeved on the gate forming body 131, and the male mold 220 is sleeved on the connecting post 132a and the ring cutter 132b.

As shown in fig. 7, further, the annular cutter 132b is formed with a plurality of first coupling grooves 1321 at one end adjacent to the coupling post 132a, the plurality of first coupling grooves 1321 being circumferentially disposed around the annular cutter 132b. The connecting post 132a is formed with a plurality of second connecting grooves 1322 at one end adjacent to the annular cutter 132b, and the plurality of second connecting grooves 1322 are circumferentially arranged along the connecting post 132 a. The in-mold cutter 132 further includes a plurality of connection blocks 133, a plurality of first connection grooves 1321 and a plurality of second connection grooves 1322 are disposed in a one-to-one correspondence manner, and two ends of each connection block 133 are respectively fixedly embedded in the corresponding first connection groove 1321 and the corresponding second connection groove 1322, so that the annular cutter 132b is fixedly connected with the connection post 132 a.

As shown in fig. 7, in one embodiment, a V-shaped inclined surface 1331 is formed on two opposite sides of each connecting block 133, so that each connecting block 133 includes a first embedded end 133a and a second embedded end 133b, the first embedded end 133a of each connecting block 133 is fixedly connected to the corresponding second embedded end 133b, the first embedded end 133a of each connecting block 133 is embedded in the corresponding first connecting slot 1321, and the second embedded end 133b of each connecting block 133 is embedded in the corresponding second connecting slot 1322, so that the annular cutter 132b is fixedly connected to the connecting post 132 a.

As shown in fig. 7, in one embodiment, the first embedded end 133a of each connecting block 133 is in interference fit with the annular cutter 132b, so as to improve the connection stability between each connecting block 133 and the annular cutter 132b, and the second embedded end 133b of each connecting block 133 is in interference fit with the connecting post 132a, so as to improve the connection stability between each connecting block 133 and the connecting post 132a, further improve the connection stability between the annular cutter 132b and the connecting post 132a, further inhibit the deflection of the annular cutter 132b during cutting, and improve the cutting precision of the annular cutter 132b, further improve the manufacturing precision of the product.

As shown in fig. 7, in one embodiment, the first connecting grooves 1321 are uniformly spaced and the second connecting grooves 1322 are uniformly spaced and arranged, so that the stress uniformity of the annular cutter 132b is high, the problem that the annular cutter 132b deflects when being cut off is avoided, the cutting precision of the annular cutter 132b is improved, and the manufacturing precision of a product is further improved.

As shown in fig. 7, in one embodiment, a plurality of anti-slip grooves 1323 are formed at the outer side of the annular cutter 132b, and the plurality of anti-slip grooves 1323 are uniformly spaced in the axial direction of the annular cutter 132b. In this embodiment, when the annular cutter 132b is mounted on the connecting post 132a, the hand clamps the portion of the annular cutter 132b with a plurality of anti-slip grooves 1323, so that the friction between the hand and the annular cutter 132b is increased, and the falling probability of the annular cutter 132b during mounting is reduced. In addition, each anti-slip groove 1323 reduces the contact area between the annular cutter 132b and the male die 220, thereby reducing the friction force between the annular cutter 132b and the male die 220, i.e. reducing the cutting resistance of the annular cutter 132b, improving the cutting speed of the annular cutter 132b, and making the probability that the annular cutter 132b cuts out the product once bigger, and further improving the manufacturing efficiency of the product.

As shown in fig. 7, in one of the embodiments, the connecting column 132a is formed at its intermediate end with a drag reducing groove 1324, the drag reducing groove 1324 being circumferentially provided around the connecting column 132 a. In this embodiment, the drag reduction groove 1324 reduces the contact area between the connecting post 132a and the male die 220, reduces the friction between the connecting post 132a and the male die 220, i.e. reduces the cutting resistance of the annular cutter 132b, increases the cutting speed of the annular cutter 132b, and increases the probability of the annular cutter 132b cutting out the product once, thereby improving the manufacturing efficiency of the product.

As shown in fig. 7, in one embodiment, each first connecting groove 1321 is located at an end of the annular cutter 132b adjacent to the connecting post 132a, each second connecting groove 1322 is located at an end of the connecting post 132a adjacent to the annular cutter 132b, and each connecting block 133 is flush with the surfaces of the annular cutter 132b and the connecting post 132a, so as to avoid the connecting block 133 interfering with the sliding of the annular cutter 132b and the connecting post 132a, and further ensure that the cutting operation of the annular cutter 132b is performed smoothly.

As shown in fig. 5 and 6, in one embodiment, the seal ring injection mold 10 further includes a stripper plate 300, the stripper plate 300 is sleeved on the male mold 220, and the stripper plate 300 is further abutted against the female mold 210 and disposed opposite to the molding cavity 201. In this embodiment, after the battery seal ring 20 is separated from the gate material, the seal ring injection mold 10 is opened to separate the first gate molding member 120 from the second gate molding member 130 and separate the female mold 210 from the male mold 220, at this time, the battery seal ring 20 is attached to the male mold 220, then the stripper plate 300 slides on the male mold 220 to push the battery seal ring 20 to separate from the male mold 220, and finally the battery seal ring 20 is taken out from the injection mold.

As shown in fig. 6, further, the fastening groove 221 is an annular groove, and the fastening groove 221 is circumferentially disposed along the male mold 220, so that the battery seal ring 20 is fastened on the male mold 220 more firmly after being molded. Further, the groove wall of the fastening groove 221 is an arc surface, so that the leakage plate is easier to push the battery seal ring 20 away from the male mold 220.

As shown in fig. 3 to 6, in one embodiment, the seal ring injection mold 10 further includes a driving mechanism 400, where the driving mechanism 400 is in driving connection with the in-mold cutter 132 and the stripper plate 300, respectively, such that the driving mechanism 400 is used to drive the in-mold cutter 132 to separate the battery seal ring 20, and such that the driving mechanism 400 is used to drive the stripper plate 300 to discharge the battery seal ring 20. Further, the driving mechanism 400 is connected to the connection post 132 a.

As shown in fig. 7, in one embodiment, the second gate molding member 130 is formed with a pushing hole 1302, the pushing hole 1302 is communicated with a cold material well 1301, and the sealing ring injection mold 10 further includes a cold material push rod 500, where the cold material push rod 500 movably penetrates the pushing hole 1302. In this embodiment, when the product, i.e. the battery seal ring 20 is demolded, the cold material pushing rod 500 slides towards the cold material in the cold material well 1301 to push the cold material in the cold material well 1301 out of the cold material well 1301, so that the cold material well 1301 can be used for the next molding, and the consistency of the product quality is ensured.

In one embodiment, as shown in fig. 3, the driving mechanism 400 is further connected to the cold material pushing rod 500, and the driving mechanism 400 is used to drive the cold material pushing rod 500 to push out the cold material.

As shown in fig. 3, in one embodiment, the seal ring injection mold 10 further includes a fixed platen 600, and the second gate molding member 130 is embedded in the fixed platen 600.

In one embodiment, as shown in FIG. 3, the male mold 220 is fixedly mounted to the stationary platen 600.

As shown in FIG. 3, in one embodiment, the in-mold tool 132 is movably disposed within the stationary platen 600.

In one embodiment, as shown in FIG. 3, the stripper plate 300 is removably mounted to a stationary platen 600.

As shown in fig. 3, in one embodiment, the driving mechanism 400 includes an elastic reset member 410, a first driving plate 420 and a second driving plate 430, where the fixed mold plate 600, the elastic reset member 410, the second driving plate 430 and the first driving plate 420 are sequentially disposed, and the elastic reset member 410 is respectively abutted to the fixed mold plate 600 and the second driving plate 430, and the second driving plate 430 is disposed at a distance from the first driving plate 420. Further, a first driving plate 420 is connected to the in-mold cutter 132, and a second driving plate 430 is connected to the stripper plate 300. In this embodiment, after the product is cooled and molded, the first driving plate 420 moves in a direction adjacent to the fixed mold plate 600, so that the first driving plate 420 drives the in-mold cutter 132 to cut off the connection between the product and the gate material, and as the first driving plate 420 continues to move, the first driving plate 420 pushes the second driving plate 430 to move in a direction toward the fixed mold plate 600, so that the second driving plate 430 drives the stripper plate 300 to move, so that the stripper plate 300 pushes the product to separate from the male mold 220. Therefore, the cutting operation and the discharging operation are sequentially carried out in the die, and the product manufacturing efficiency is improved.

Further, as shown in fig. 3, a cold bar 500 is connected to the second drive plate 430. In this embodiment, after the product is cooled and molded, the first driving plate 420 moves in a direction adjacent to the fixed mold plate 600, so that the first driving plate 420 drives the in-mold cutter 132 to cut off the connection between the product and the gate material, and as the first driving plate 420 continues to move, the first driving plate 420 pushes the second driving plate 430 to move in a direction toward the fixed mold plate 600, so that the second driving plate 430 drives the stripper plate 300 to move, and simultaneously the cold material push rod 500 pushes the cold material in the cold material well 1301. Because the cold material well 1301, the face gate 101 and the annular material ladle groove 122 are sequentially communicated, cold material in the cold material well 1301, gate material in the face gate 101 and slag ladle in the annular material ladle groove 122 are of an integrated structure, and after the cold material push rod 500 pushes the cold material, the gate material and the slag ladle are separated from the die at the same time.

As shown in fig. 6, in one embodiment, a first parting line is formed between the first gate molding member 120 and the second gate molding member 130, the first parting line being disposed adjacent to the first gate molding member 120 to facilitate demolding of the battery seal ring 20.

In one embodiment, as shown in fig. 6, a second parting line is formed between the female die 210 and the stripper plate 300, i.e., the second parting line of the battery seal ring 20 is located at the lower edge.

Compared with the prior art, the utility model has at least the following advantages:

because the gate is the face gate 101, the plastic solution entering the forming cavity 201 is only one, the weld mark in the forming cavity 201 is reduced, the defect of the battery sealing ring 20 is further reduced, and the strength of the battery sealing ring 20 is further improved. Because the heating structure is arranged in the hot nozzle, the plastic solution in the hot runner 111 and the surface type pouring gate 101 are in a higher-temperature state, so that the fluidity of the plastic solution in the hot runner 111 and the surface type pouring gate 101 is higher, and the filling efficiency of the forming cavity 201 is improved.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. 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 utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A gate structure of a sealing ring comprises a nozzle, a first gate molding piece and a second gate molding piece, and is characterized in that,

the first gate forming part forms a clearance channel, a part of the nozzle is positioned in the clearance channel and sleeved with the first gate forming part, a hot runner is formed at one end of the nozzle, and the second gate forming part is opposite to the first gate forming part and arranged at intervals to form a face gate, and the face gate is communicated with the hot runner.

2. The seal ring gate structure of claim 1, wherein the face gate has a thickness of 0.15 mm to 0.25 mm.

3. The seal ring gate structure of claim 2, wherein the face gate has a thickness of 0.2 millimeters.

4. The seal ring gate structure of claim 2, wherein an end surface of the first gate molding member opposite to the second gate molding member is formed with an annular pocket, the annular pocket is located at a periphery of the face gate, and the annular pocket is in communication with the face gate.

5. The seal ring gate structure of claim 1, wherein a cold-fill well is formed on a side of the second gate molding adjacent the nozzle, the cold-fill well being disposed opposite and in communication with the hot runner.

6. A seal ring injection mold comprising a molding assembly and the seal ring gate structure of any one of claims 1 to 5, the molding assembly forming a molding cavity in communication with a periphery of the face gate.

7. The seal ring injection mold of claim 6 wherein said molding assembly comprises a female mold and a male mold, said female mold being received on said first gate molding member, said female mold defining a molding slot, said male mold being received on said second gate molding member, portions of said male mold being positioned within said molding slot such that said male mold and said female mold are closed and cooperate to define a molding cavity.

8. The seal ring injection mold of claim 7 wherein the second gate molding member comprises a gate molding body and an in-mold cutter, the in-mold cutter being slidably received on the gate molding body, the in-mold cutter and the gate molding body being disposed in spaced relation to the first gate molding member to form the face gate; the male die is sleeved on the in-die cutter.

9. The seal ring injection mold of claim 8 further comprising a stripper plate that is sleeved on the male die, the stripper plate further abutting the female die and disposed opposite the molding cavity.

10. The seal ring injection mold of claim 9 further comprising a drive mechanism in driving connection with the in-mold cutter and the stripper plate, respectively.