CN220841259U

CN220841259U - One-outlet multi-hot runner and injection mold with high heat conduction balance

Info

Publication number: CN220841259U
Application number: CN202322288576.XU
Authority: CN
Inventors: 任坤; 刘常安
Original assignee: Kunshan Zhunda Hot Runner Co ltd
Current assignee: Kunshan Zhunda Hot Runner Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-04-26
Anticipated expiration: 2033-08-24

Abstract

The utility model discloses a multi-hot runner and an injection mold with high heat conduction balance, wherein the multi-hot runner comprises a flow dividing piece and at least one glue outlet head which is detachably connected with the flow dividing piece. The flow dividing piece is provided with a feeding channel and a discharging channel, the feeding channel is axially arranged along the flow dividing piece and upwards penetrates through the flow dividing piece, and the lower end of the feeding channel is closed. The discharge channel is provided with at least one and all is located the lower extreme of reposition of redundant personnel, and every discharge channel all sets up and communicates the feed channel perpendicular feed channel. The glue outlet head is correspondingly arranged with the discharge channel and is communicated with the discharge channel. The processing is convenient, and the heat conduction balance is realized so as to improve the product precision.

Description

One-outlet multi-hot runner and injection mold with high heat conduction balance

Technical Field

The utility model relates to the technical field of injection molds, in particular to a one-outlet multi-hot runner with high heat conduction balance and an injection mold.

Background

Injection molds are important tools for processing plastic products, and the precision of injection molds will affect the precision of injection molded products. Injection molding is a processing method used in mass production of parts with complex shapes, and specifically refers to injection molding of melted plastic, namely injection molding glue, by an injection molding machine, injection molding glue is injected into an injection mold cavity under high pressure, and after cooling and solidification, a formed product is obtained. The injection molding molten rubber enters the cavity through a hot runner in the injection molding grinding tool.

For some tubular products, such as injection molding of needle tubes, for the case of smaller structures of the product itself, the hot runner can cause large water gap waste and waste. Hot runners for injection molding from the side are therefore present, but in order to match the use of the product, the hot runner is often complex to process, which can lead to uncontrollable precision and thus non-uniformity of the injection molded product.

Disclosure of utility model

In order to overcome the defects, the utility model aims to provide a multi-hot runner with high heat conduction balance, which is convenient to process and realizes heat conduction balance so as to improve the product precision.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a go out many hot runner with high heat conduction equilibrium, includes the reposition of redundant personnel piece, be provided with feed channel and discharge channel on the reposition of redundant personnel piece, feed channel is offered along the reposition of redundant personnel piece axial and one end runs through the reposition of redundant personnel piece, the discharge channel is provided with at least one and all is located the other end of reposition of redundant personnel piece, every discharge channel all is perpendicular feed channel offers and communicates feed channel. The glue outlet heads are arranged corresponding to the discharge channels and are communicated with the discharge channels, and each glue outlet head is detachably connected with the corresponding flow dividing piece.

The utility model has the beneficial effects that: 1. the glue outlet head is detachable, so that the machining difference caused by integrally machining a plurality of glue outlets in one-outlet multi-hot runner is avoided, the machining precision is high, and the product precision is improved; 2. through the standardized structural design of the glue outlet heads, the glue outlet heads are mounted on the flow dividing piece, so that the consistency of the glue outlet heads is ensured, and the heat conduction balance is realized; 3. the whole structure is compact, the whole volume is about half of that of the normal structure, so that the heat conduction is more balanced, and the injection molding processing of small-size tubular objects is satisfied; 4. the vertical feeding channel and the vertical discharging channel on the flow dividing piece realize the change of the glue outlet direction, finally realize the side glue injection of the cavity, completely eliminate the water gap material and save the material.

Further, the shunt piece is in threaded connection with the rubber outlet head. The block speed between the glue head and the flow dividing piece can be installed and detached by rotating the glue head, and the stability is good.

Further, an internal thread is arranged in the discharging channel, and an external thread is arranged at one end of the glue outlet head, which is close to the flow dividing piece, and the internal thread is matched with the external thread. When the glue outlet head is inserted into the discharging channel and rotates, the fixation of the glue outlet head and the flow dividing piece is realized.

Further, the flow dividing piece comprises a splicing part and a flow dividing part which are sequentially arranged, the feeding channel upwards penetrates through the splicing part, and the discharging channel is arranged on the flow dividing part.

Furthermore, the dividing part is of a circular structure, and the glue outlet heads are circumferentially distributed around the dividing part. When the glue outlet heads are circumferentially distributed, the glue outlet heads can be uniformly distributed or unevenly distributed, and the glue outlet heads are distributed according to actual needs.

Or the dividing part is of a polygonal structure, and the glue outlet head is arranged on any side edge of the dividing part. The glue outlet heads can be arranged on one side edge, and the glue outlet heads are also arranged on two, three or more side edges, and the glue outlet heads on each side edge are arranged according to actual needs.

The hot runner can be made one out, one out two, one out three, one out four, one out five or more according to the requirements, and the hot runner is applicable to a wide range of products as long as the space of the splitter allows. And the arrangement space is compact, so that the die space is effectively saved, and more cavities can be injected in the same die space.

Furthermore, a glue outlet flow passage communicated with the discharge passage and the cavity is formed in the glue outlet head, the glue outlet flow passage comprises a horizontal section and an inclined section, the horizontal section is coaxial with the discharge passage, the inclined section is inclined upwards from being close to the horizontal section to being far away from the horizontal section, and the inclined section penetrates through the glue outlet head to form a glue outlet. And due to the arrangement of the inclined section, the uniformity of glue outlet is improved, and the injection molding glue is convenient to enter the cavity.

Furthermore, the glue outlet head comprises a diversion needle point which is positioned at one end far away from the diversion piece and is of a conical structure, and the diversion needle point is positioned below the glue outlet and is close to the glue outlet. The guide needle point guides the injection molding sol from the glue outlet, and the injection molding sol enters the cavity along the guide needle point.

Furthermore, the part of the glue outlet head extending out of the flow dividing piece is provided with an anti-slip protrusion. The anti-slip bulge is convenient for exerting force and rotating the glue outlet head.

Further, the rubber injection pipe is further included, one end of the flow dividing piece, which is far away from the rubber outlet head, is inserted into the rubber injection pipe, and a main runner which is coaxial with and communicated with the feeding channel is arranged in the rubber injection pipe.

The utility model also discloses an injection mold comprising the one-outlet multi-hot runner.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic view of another perspective view of an embodiment of the present utility model;

FIG. 3 is a schematic view of a diverter according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of an embodiment of the present utility model taken along the axis of the feed channel;

FIG. 5 is a cross-sectional view of an embodiment of the present utility model taken perpendicular to the feed channel axis;

FIG. 6 is a schematic diagram of a structure of a dispensing head according to an embodiment of the present utility model;

FIG. 7 is a bottom view of another embodiment of the present utility model;

Fig. 8 is a bottom view of another embodiment of the present utility model.

In the figure:

1. A shunt; 11. a plug-in part; 111. a feed channel; 12. a split flow section; 121. a discharge channel;

2. A glue outlet head; 21. a glue outlet flow passage; 211. a horizontal section; 212. an inclined section; 22. a glue outlet; 23. a diversion needle point;

3. And (5) injecting a rubber tube.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, it should be noted that, in the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

Referring to fig. 1 and 2, the one-outlet multi-hot runner with high heat conduction balance of the utility model comprises a splitter 1 and at least one glue outlet head 2 detachably connected with the splitter 1. The splitter 1 is used for uniformly injecting the injection molding sol entering along the axis thereof into the glue outlet head 2 along the direction perpendicular to the axis thereof, and the glue outlet head 2 injects the injection molding sol into a cavity (not shown in the figure) at one side thereof.

The flow dividing piece 1 is provided with a feeding channel 111 and a discharging channel 121, the feeding channel 111 is axially formed along the flow dividing piece 1 and upwards penetrates through the flow dividing piece 1, and the lower end of the feeding channel 111 is closed. The discharging channels 121 are provided with at least one and are all located at the lower end of the flow dividing member 1, and each discharging channel 121 is perpendicular to the feeding channel 111 and is communicated with the feeding channel 111. The glue outlet head 2 is disposed corresponding to the discharge channel 121 and is in communication with the discharge channel 121.

The injection molding molten rubber flowing in from the feeding channel 111 is diverted and split through the discharging channel 121, and then is injected into a cavity positioned at one side of the rubber outlet head 2 from the rubber outlet head 2.

In this embodiment, the glue outlet head 2 is detachable, so as to avoid the machining variability caused by integrally machining a plurality of glue outlets 22 in one outlet multi-hot runner, and the machining precision is high, so as to improve the product precision. Through the standardized structural design of the glue outlet heads 2, the glue outlet heads are installed on the flow dividing piece 1, and the consistency of the glue outlet heads 2 is ensured, so that the heat conduction balance is realized. The whole structure is compact, the whole volume is about half of normal, the heat conduction is more balanced, and the injection molding processing of small-size tubular objects is satisfied.

In one embodiment, the shunt 1 and the glue outlet head 2 are in threaded connection. The block speed installation and the disassembly between the glue head 2 and the shunt piece 1 can be realized by rotating the glue head 2, and the stability is good.

Referring to fig. 4, an internal thread is disposed in the discharging channel 121, and an external thread is disposed at one end of the glue outlet head 2 near the splitter 1, where the internal thread matches with the external thread. When the glue outlet head 2 is inserted into the discharging channel 121 and rotated, the fixation of the glue outlet head 2 and the shunt piece 1 is realized.

In another embodiment, the shunt piece 1 and the glue outlet head 2 are in interference fit connection, and detachable connection of the shunt piece 1 and the glue outlet head 2 can be realized.

Referring to fig. 3 and fig. 4, the diverter 1 includes a plugging portion 11 and a diverter portion 12, which are sequentially disposed, the plugging portion 11 and the diverter portion 12 are disposed up and down, the feeding channel 111 passes through the plugging portion 11 upwards, and the discharging channel 121 is disposed on the diverter portion 12. One end of the shunt piece 1, which is far away from the rubber outlet head 2, is inserted into the rubber injection pipe 3, and a main flow passage which is coaxial with and communicated with the feeding passage 111 is arranged in the rubber injection pipe 3. I.e. the plug portion 11 is inserted into the injection tube 3 and the plug portion 11 can abut against the shunt portion 12 such that the shunt portion 12 defines the distance the plug portion 11 is inserted.

In one embodiment, referring to fig. 1 and fig. 7, the dividing portion 12 has a circular structure, and the glue outlet heads 2 are circumferentially arranged around the dividing portion. When the glue outlet heads 2 are circumferentially distributed, the glue outlet heads can be uniformly distributed or unevenly distributed, and the glue outlet heads are distributed according to actual needs. Referring to fig. 1, at this time, the number of the glue outlet heads 2 is four, and in fig. 7, the number of the glue outlet heads 2 is six. Of course, the glue outlet head 2 can be set according to actual needs, that is, the discharge channel 121 can be flexibly set according to actual needs, and one, two, three, five or more of the glue outlet heads can be set, so long as the space of the diverter 1 allows.

In one embodiment, referring to fig. 8, the dividing portion 12 has a rectangular structure, the glue outlet heads 2 are disposed on two parallel sides of the dividing portion 12, four glue outlet heads 2 are disposed on each side, and the number of glue outlet heads 2 can be changed. Of course, the glue outlet heads 2 can be arranged on only one side edge, or the glue outlet heads 2 are arranged on all side edges, and the glue outlet heads are arranged according to actual needs.

In other embodiments, the shunt portion 12 may also be triangular, pentagonal, etc. The shape of the shunt part is set according to actual needs.

The distribution structure of the glue outlet heads 2 has compact arrangement space, effectively saves the die space, and can meet the requirement of more cavity injection molding in the same die space.

The glue outlet head 2 is provided with a glue outlet flow passage 21 which is communicated with the discharge passage 121 and the cavity. Referring to fig. 4, in one embodiment, the glue outlet channel includes a horizontal section 211 and an inclined section 212, the horizontal section 211 is coaxial with the discharge channel 121, the inclined section 212 is inclined upwards from the position close to the horizontal section 211 to the position far from the horizontal section 211, and the inclined section 212 penetrates through the glue outlet head 2 to form the glue outlet 22. The arrangement of the inclined section 212 improves the uniformity of glue outlet, and is convenient for injection molding and glue melting to enter the cavity.

In one embodiment, referring to fig. 2 and 6, the glue outlet head 2 includes a diversion tip 23 of a conical structure located at an end far from the diverter 1, and the diversion tip 23 is located below the glue outlet 22 and near the glue outlet 22. The guide needle point 23 guides the injection molding sol from the glue outlet 22, and the injection molding sol enters the cavity along the guide needle point 23.

In one embodiment, referring to fig. 4, 5 and 6, the outer wall of the glue head 2 is provided with a step structure, which can abut against the splitter 1 at the discharge channel 121 to define the distance of the glue head 2 inserted into the discharge channel 121 when the glue head 2 is inserted into the discharge channel 121.

Referring to fig. 6, the part of the glue outlet head 2 extending out of the flow dividing piece 1 is provided with a non-slip protrusion, which is convenient for force application and rotates the glue outlet head 2.

The multi-hot runner can meet the requirement of injection molding of a plurality of cylindrical and strip-shaped long and thin products, and the glue outlet 22 injects injection molding sol from the side edge of the cavity, so that the water gap material can be completely eliminated, the raw materials are saved, and the subsequent processing is reduced.

In one embodiment, an injection mold is also disclosed, comprising the one-out-multiple hot runner described above. The injection mold has a cavity corresponding to the glue outlet 2, and the cavity is located at one side of the glue outlet 22. The glue injection is even, the heat conduction is balanced, the precision requirement of injection molding is met, and meanwhile, the water gap material is eliminated.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. One goes out many hot runner with high heat conduction equilibrium, its characterized in that: comprising

The device comprises a flow dividing piece, wherein a feeding channel and a discharging channel are arranged on the flow dividing piece, the feeding channel is axially arranged along the flow dividing piece, one end of the feeding channel penetrates through the flow dividing piece, at least one discharging channel is arranged at the other end of the flow dividing piece, and each discharging channel is perpendicular to the feeding channel and is communicated with the feeding channel;

The glue outlet heads are arranged corresponding to the discharge channels and are communicated with the discharge channels, and each glue outlet head is detachably connected with the corresponding flow dividing piece.

2. The one-out-multiple hot runner with high thermal conductivity equalization of claim 1, wherein: the shunt piece is in threaded connection with the rubber outlet head.

3. The one-out-multiple hot runner with high thermal conductivity equalization of claim 2, wherein: the discharging channel is internally provided with internal threads, and one end of the glue outlet head, which is close to the flow dividing piece, is provided with external threads.

4. The one-out-multiple hot runner with high thermal conductivity equalization of claim 1, wherein: the flow dividing piece comprises a splicing part and a flow dividing part which are sequentially arranged, the feeding channel upwards penetrates through the splicing part, and the discharging channel is arranged on the flow dividing part.

5. The one-out-multiple hot runner with high thermal conductivity equalization of claim 4, wherein: the splitting part is of a circular structure, and the glue outlet heads are circumferentially distributed around the splitting part;

Or the dividing part is of a polygonal structure, and the glue outlet head is arranged on any side edge of the dividing part.

6. The one-out-multiple hot runner with high thermal conductivity equalization of claim 1, wherein: the glue outlet flow passage communicated with the discharging passage and the cavity is formed in the glue outlet head, the glue outlet flow passage comprises a horizontal section and an inclined section, the horizontal section is coaxial with the discharging passage, the inclined section is inclined upwards from being close to the horizontal section to being far away from the horizontal section, and the inclined section penetrates through the glue outlet head to form a glue outlet.

7. The one-out-multiple hot runner with high thermal conductivity equalization of claim 6, wherein: the glue outlet head comprises a diversion needle point which is located at one end far away from the diversion piece and is of a conical structure, and the diversion needle point is located below the glue outlet and is close to the glue outlet.

8. The one-out-multiple hot runner with high thermal conductivity equalization of claim 1, wherein: the part of the glue outlet head extending out of the flow dividing piece is provided with an anti-slip bulge.

9. The one-out-multiple hot runner with high thermal conductivity equalization of claim 1, wherein: the rubber injection pipe is characterized by further comprising a rubber injection pipe, wherein one end of the flow dividing piece, which is far away from the rubber outlet head, is inserted into the rubber injection pipe, and a main flow passage which is coaxial with and communicated with the feeding passage is arranged in the rubber injection pipe.

10. An injection mold, characterized in that: comprising a one-out-multiple hot runner according to any of claims 1-9.