CN216914704U

CN216914704U - Hot runner mold

Info

Publication number: CN216914704U
Application number: CN202122887041.5U
Authority: CN
Inventors: 沈勇
Original assignee: Dongguan Reheng Injection Technology Co ltd
Current assignee: Dongguan Reheng Injection Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-07-08
Anticipated expiration: 2031-11-23

Abstract

The utility model relates to the technical field of hot runners, in particular to a hot runner mold, which comprises a splitter plate, a first sizing material channel, a transitional hot nozzle, a second sizing material channel and a hot nozzle, wherein the hot nozzle comprises a hot nozzle body, a third sizing material channel, a splitter block, a splitter channel, a plurality of hot nozzle heads, a fourth sizing material channel and a fixing device, the splitter block, the third sizing material channel, the splitter channel, the plurality of hot nozzle heads, the fourth sizing material channel and the fixing device are arranged in the hot nozzle body, and the plurality of hot nozzle heads are respectively and tightly connected with the splitter block; the fixing device is used for fixing the shunting block in the hot nozzle body. The transition hot nozzle is additionally arranged, so that the height of the hot nozzle head is adapted to the height of the die cavity. The hot nozzle head and the shunting block are convenient to disassemble and assemble; the flow dividing block and the hot nozzle head can be produced separately, so that the production and processing technology of the hot nozzle is simplified; the fixing device is used for fixing the shunting block, the hot nozzle head and the hot nozzle body, and the fixing device can share the injection molding pressure applied to the shunting block and the hot nozzle head, so that the normal operation of the hot runner mold is ensured.

Description

Hot runner mold

Technical Field

The utility model relates to the technical field of hot runners, in particular to a hot runner mold.

Background

At present, aiming at elongated and thin tube-shaped products, and suction tubes or products similar to deep tubes, such as products like injection molding syringes, the glue injection cannot be performed because the products are very small, or the glue inlet points of the syringe-shaped products are vertical and close to the surfaces of the products, and the multi-point inner pouring gate products which can rotate symmetrically, such as mineral water bottle caps in the packaging industry, cannot be discharged from a common hot runner system due to limited space.

Because the glue inlet point is required to be on the horizontal plane and close to the vertical plane profile of the product, the space in the die is limited, the direct glue inlet of a plurality of product die cavities can not be realized by adopting the common hot nozzle, or the conditions of product appearance failure, material shortage and the like are caused, and the product yield is low. Especially for the high product of precision, because current mould generally fixes a position with the mould through a plurality of locating surfaces, this location is wrong, when meetting the mould error great, chews the point just can not be fine and corresponds to the mould intracavity, still need adjust hot and chew the location, whole hot is chewed and is fixed a position the fine setting very troublesome, and is taken time moreover, the condition of lou appears still easily. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a hot runner mold.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a hot runner mold comprises a flow distribution plate, a first sizing material channel arranged in the flow distribution plate, at least two transition hot nozzles connected to the flow distribution plate, a second sizing material channel arranged in the transition hot nozzles and communicated with the first sizing material channel, and hot nozzles connected to the transition hot nozzles, wherein each hot nozzle comprises a hot nozzle body, a third sizing material channel arranged in the hot nozzle body and communicated with the second sizing material channel, a flow distribution block arranged in the hot nozzle body, flow distribution channels arranged in the flow distribution block and communicated with the third sizing material channel, a plurality of hot nozzle heads respectively arranged in the hot nozzle body, a fourth sizing material channel arranged in the hot nozzle heads, and a fixing device arranged in the hot nozzle body, wherein the fourth sizing material channel of each hot nozzle head is respectively communicated with the flow distribution channel; the plurality of hot nozzle heads are respectively and tightly connected with the shunting block; the fixing device is used for fixing the shunting block in the hot nozzle body.

Furthermore, the hot nozzle also comprises an installation cavity arranged in the hot nozzle body and a plurality of first through holes which are arranged in the hot nozzle body and communicated with the installation cavity, and the installation cavity is communicated with the rubber material channel II; the shunting block is arranged in the mounting cavity; the hot nozzle head is arranged in the first through hole; the fixing device is used for fixing the shunting block in the mounting cavity.

Furthermore, the hot nozzle also comprises a fixing cavity and a plurality of second through holes which are arranged in the hot nozzle body; the mounting cavity is communicated with the fixed cavity; the second through holes are respectively communicated with the mounting cavity; fixing device includes that detachably connects in fixed intracavity and can contradict with the fixing base of shunting the bottom of piece and respectively detachably sets up in a plurality of through-hole two and can with a plurality of mountings of the circumference conflict of shunting the piece.

Furthermore, the number of the second through holes and the number of the first through holes are two, and one first through hole and one second through hole are coaxially arranged.

Further, the shunting block is rectangular.

Furthermore, the glue material channels of the plurality of hot nozzle heads are respectively vertical to the flow dividing channels.

Furthermore, a guide surface is arranged in the flow dividing channel.

Further, the lateral wall of hot mouth body outwards the protruding spacing boss that establishes into.

Furthermore, a limiting step is arranged in the first through hole, an annular boss is arranged on the heat nozzle head, and the annular boss is abutted against the limiting step. .

Furthermore, the flow distribution plate, the transition hot nozzle and the hot nozzle body are all externally coated with heating devices.

The utility model has the beneficial effects that: the transitional hot nozzle and the hot nozzle are convenient to repair and maintain, and the third sizing material channel and the fourth sizing material channel are convenient to clean. And a transition hot nozzle is additionally arranged, so that the height of the hot nozzle head is adapted to the height of the die cavity, and a glue outlet of the glue material channel IV is convenient to correspond to an injection molding port of the die cavity. The shunting block is fixed in the hot nozzle body through the fixing device, the hot nozzle head and the shunting block are convenient to disassemble and assemble, the hot nozzle head is convenient to repair and maintain, and the shunting block and the hot nozzle head can be separately produced, so that the production and processing technology of the hot nozzle is simplified; in addition, in the high-temperature and high-pressure injection environment, the shunting block, the hot nozzle head and the hot nozzle body are fixed through the fixing device, so that the shunting block, the hot nozzle head and the hot nozzle body are connected more stably, the fixing device can bear the injection pressure on the shunting block and the hot nozzle head, the normal operation of a hot runner mold is ensured, and the stable injection molding of a multi-cavity full-hot runner is realized.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a partial cross-sectional view of the present invention.

Fig. 3 is a partial perspective view of the present invention.

Fig. 4 is a schematic perspective view of the present invention.

Description of reference numerals:

1. a sizing material channel I; 2. a sizing material channel II; 3. a sizing material channel III; 4. a sizing material channel IV; 5. a flow distribution plate; 6. a transition hot nozzle; 7. a hot nozzle; 8. a hot tip; 9. a shunting block; 10. a fixing device; 11. a fixed cavity; 12. a mounting cavity; 13. a first through hole; 14. a second through hole; 15. a fixed seat; 16. a fixing member; 17. a guide surface; 18. a main injection nozzle; 19. a glue inlet channel; 20. a limiting boss; 21. a flow dividing channel; 22. a limiting step; 23. the annular boss.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 4, the hot runner mold provided by the present invention comprises a flow distribution plate 5, a first glue material channel 1 disposed in the flow distribution plate 5, at least two transitional hot nozzles 6 connected to the bottom end of the flow distribution plate 5, a second glue material channel 2 disposed in the transitional hot nozzles 6 and communicated with the first glue material channel 1, and a hot nozzle 7 connected to the bottom end of the transitional hot nozzle 6, the hot nozzle 7 comprises a hot nozzle body, a sizing material channel III 3 which is arranged in the hot nozzle body and communicated with the sizing material channel II 2, a shunting block 9 which is arranged in the hot nozzle body, a shunting channel 21 which is arranged in the shunting block 9 and communicated with the sizing material channel III 3, a plurality of hot nozzle heads 8 which are respectively arranged in the hot nozzle body, a sizing material channel IV 4 which is arranged in the hot nozzle heads 8 and a fixing device 10 which is arranged in the hot nozzle body, wherein the sizing material channel IV 4 of the plurality of hot nozzle heads 8 is respectively communicated with the shunting channel 21; the plurality of hot nozzle heads 8 are respectively and tightly connected with the shunting blocks 9; the fixing device 10 is used for fixing the shunting block 9 in the hot nozzle body.

Preferably, the number of the hot nozzle heads 8 is two, and the number of the transition hot nozzles 6 is 6-8; the glue outlet of the glue material channel IV 4 is in one-to-one correspondence with the injection molding ports of the mold cavities of the mold to be injection molded, and one hot nozzle 7 can simultaneously perform injection molding on two mold cavities, namely one hot nozzle head 8 corresponds to one mold cavity; the transition hot nozzle 6 is detachably connected with the hot nozzle 7, the transition hot nozzle 6 and the hot nozzle 7 are convenient to disassemble, assemble and maintain, and the sizing material channel three 3, the flow dividing channel 21 and the sizing material channel four 4 are convenient to clean. During injection molding, the rubber material in a molten state flows into the flow distribution plate 5 through the rubber inlet of the rubber material inlet channel I1, flows through the rubber material channel I1, the rubber material channel II 2, the rubber material channel III 3, the flow distribution channel 21 and the rubber material channel IV 4 in sequence, and finally flows into the mold cavity through the rubber outlet of the rubber material channel IV 4 to start injection molding. The transition hot nozzle 6 is additionally arranged, so that the height of the hot nozzle head 8 is adapted to the height of the die cavity, and a glue outlet of the glue material channel four 4 is convenient to correspond to an injection molding port of the die cavity. In addition, heating devices can be additionally arranged outside the transition hot nozzle 6, the hot nozzle body and the flow distribution plate 5 to heat the rubber material in the hot runner mold, so that the temperature of the rubber material flowing into the hot runner mold is consistent with that of the rubber material flowing out of the hot runner mold, the stability of the rubber material in the injection molding process is improved, and the problems of yellowing, blackening, rubber shortage and the like of an injection molded product caused by unbalanced temperature of the rubber material are avoided. Add fixing device 10, install the reposition of redundant personnel piece 9 in hot mouth originally internally after hot mouth head 8 installs on hot mouth body to make reposition of redundant personnel piece 9 and hot mouth head 8 zonulae occludens, be fixed in hot mouth originally internally with reposition of redundant personnel piece 9 through fixing device 10 at last. The hot nozzle head 8 and the shunting block 9 are convenient to disassemble, assemble and maintain, and the shunting block 9 and the hot nozzle head 8 can be produced separately, so that the production and processing technology of the hot nozzle 7 is simplified; in addition, in a high-temperature and high-pressure injection environment, the shunting block 9, the hot nozzle head 8 and the hot nozzle body are fixed through the fixing device 10, so that the shunting block 9, the hot nozzle head 8 and the hot nozzle body are connected more stably, the fixing device 10 can distribute injection pressure on the shunting block 9 and the hot nozzle head 8, normal operation of a hot runner mold is guaranteed, and stable injection molding of a multi-cavity full-hot runner is realized.

Further, the hot nozzle 7 further comprises an installation cavity 12 arranged in the hot nozzle body and a plurality of first through holes 13 which are arranged in the hot nozzle body and communicated with the installation cavity 12, wherein the installation cavity 12 is communicated with the second sizing material channel 2; the shunting block 9 is arranged in the mounting cavity 12; the hot nozzle head 8 is arranged in the first through hole 13; the fixing device 10 is used for fixing the diverter block 9 in the installation cavity 12.

Specifically, the shunting block 9 respectively collides with the inner wall of the mounting cavity 12 and the hot nozzle 8. In the in-service use process, install hot nozzle head 8 in through-hole 13, install reposition of redundant personnel piece 9 in installation cavity 12, fix reposition of redundant personnel piece 9 in installation cavity 12 through fixing device 10 at last, reposition of redundant personnel piece 9 closely laminates with installation cavity 12 and hot nozzle head 8 respectively, prevents that the sizing material from revealing from the junction of reposition of redundant personnel passageway 21 and sizing material passageway three 3 or/and reposition of redundant personnel passageway 21 and sizing material passageway four 4.

Further, the hot nozzle 7 further comprises a fixing cavity 11 and a plurality of second through holes 14 which are arranged in the hot nozzle body; the installation cavity 12 is communicated with the fixed cavity 11, and the installation cavity 12 is formed by inwards recessing the inner side wall of the fixed cavity 11; the second through holes 14 are respectively communicated with the mounting cavity 12; the fixing device 10 includes a fixing seat 15 detachably connected in the fixing cavity 11 and capable of abutting against the bottom end of the shunting block 9, and a plurality of fixing pieces 16 detachably disposed in the plurality of second through holes 14 and capable of abutting against the circumferential direction of the shunting block 9.

Specifically, the mounting cavity 12 is located at the top end of the fixing cavity 11, and the second through hole 14 is arranged in the circumferential direction of the mounting cavity 12. The fixing piece 16 and the fixing seat 15 are respectively inserted into the second through hole 14 and the fixing cavity 11, the fixing piece 16 and the fixing seat 15 are respectively abutted against the shunting block 9, and the fixing piece 16 and the fixing seat 15 are stopped being continuously inserted into the hot nozzle body until the shunting block 9 is tightly attached to the inner walls of the hot nozzle head 8 and the mounting cavity 12 respectively. The hot nozzle head 8, the hot nozzle body and the shunting block 9 are convenient to disassemble and assemble and stable in connection structure, the hot nozzle 7 is simple in structure and convenient to disassemble and assemble, the mold disassembling time of the hot runner mold is shortened, and stable injection molding and production of the hot runner mold are facilitated. The fixing seat 15 and the fixing part 16 can ensure that the shunting block 9 is tightly attached to the hot nozzle head 8 and the hot nozzle body all the time respectively, so that the leakage of rubber in the hot nozzle body is avoided, the rubber waste is caused, and the normal operation of the hot runner mold is influenced.

Further, the shunting block 9 is rectangular.

Specifically, the fixing member 16 and the fixing seat 15 may be screws, bolts, or screws. When the shunting block 9 is rectangular, the side surface of the shunting block 9 is a flat plane, so that the fixed seat 15 or the fixed part 16 is tightly attached to the shunting block 9, and the stability of the shunting block 9 in connection with the hot nozzle head 8 is further improved; meanwhile, the installation cavity 12 is rectangular, and the installation cavity 12 is convenient to process.

Furthermore, the number of the second through holes 14 and the number of the first through holes 13 are both two; one first through hole 13 and one second through hole 14 are coaxially arranged.

Specifically, the two first through holes 13 and the two second through holes 14 are respectively arranged corresponding to and perpendicular to four side surfaces of the shunting block 9; two glue outlets of the shunting channel 21 are respectively arranged on two adjacent side surfaces of the shunting block 9. In the actual installation process, install reposition of redundant personnel piece 9 in installation cavity 12, and make two play jiao kou of reposition of redundant personnel passageway 21 communicate with two sizing material passageways four 4 respectively, the other two sides of reposition of redundant personnel piece 9 correspond with two through-holes two 14 respectively, the top face of reposition of redundant personnel piece 9 is contradicted with the inside wall of installation cavity 12, install two mountings 16 in two through-holes two 14 respectively, two mountings 16 are located the extension line of two through-holes one 13 respectively, and support perpendicularly and press on two sides of reposition of redundant personnel piece 9, it compresses tightly to the direction that is close to hot nozzle 8 to be convenient for mounting 16 steady drive reposition of redundant personnel piece 9, install fixing base 15 in fixed cavity 11 again at last, the bottom face of reposition of redundant personnel piece 9 is contradicted with fixing base 15, stability when further having improved reposition of redundant personnel piece 9 and hot nozzle 8 and being connected. In addition, the side surface of the shunting block 9 is fully utilized on the basis of not increasing the volume of the shunting block 9, and the utilization rate of the shunting block 9 is improved.

Further, the four sizing material passages 4 of the plurality of nozzle tips 8 are perpendicular to the branch passages 21, respectively.

Specifically, the sizing material channel three 3 is respectively perpendicular to the sizing material channels four 4. Because the sizing materials in the diversion channel 21 and the sizing material channel three 3 are both vertical to the sizing material in the sizing material channel four 4, the sizing materials in the sizing material channel three 3 and the diversion channel 21 can keep a certain injection pressure to rapidly flow into the sizing material channel four 4 under the dual action of gravity and injection pressure, and can be rapidly injected into the mold cavity from the glue outlet of the sizing material channel four 4 for injection molding, thereby being beneficial to the sizing materials to keep a certain injection pressure to flow into the sizing material channel four 4, and can be rapidly injected into the mold cavity from the glue outlet of the sizing material channel four 4 for injection molding.

Further, a guide surface 17 is provided in the flow dividing passage 21.

In particular, the guide surface 17 is circular-arc shaped. When the sizing material flows through the guiding surface 17, the guiding surface 17 can guide the sizing material in the shunting channel 21, so that the sizing material in the shunting channel 21 can be conveniently guided into the sizing material channel four 4.

Further, the outer side wall of the hot nozzle body is outwards protruded to form a limiting boss 20.

Preferably, the number of the limit bosses 20 is three. Insert the hot mouth body and locate on treating injection mold to make the play jiao kou and the die cavity intercommunication of sizing material passageway four 4, add spacing boss 20 and insert the position of locating on treating injection mold to the hot mouth body and carry out spacing and direction, in order to improve the hot mouth body and treat injection mold stability in the use.

Preferably, two sizing material channels four 4 are arranged in the hot nozzle 8, the two sizing material channels four 4 are symmetrically arranged on the hot nozzle 8, and a glue outlet of the sizing material channel four 4 is inclined downwards or upwards, so that the hot nozzle 8 can conveniently perform injection molding on mold cavities of various shapes, and the application range of the hot runner mold is expanded.

Furthermore, a limiting step 22 is arranged in the first through hole 13, an annular boss 23 is arranged on the heat nozzle head 8, and the annular boss 23 is abutted against the limiting step 22.

In the actual installation process, the hot nozzle head 8 is inserted into the first through hole 13, installation is stopped until the annular boss 23 is abutted against the limiting step, the top end of the hot nozzle head 8 does not excessively extend out of the first through hole 13, the length of the hot nozzle head 8 outside the first through hole 13 is ensured, and the hot nozzle head 8 is conveniently inserted into a mold cavity of a mold to be injection molded;

specifically, the hot runner mold further comprises a main injection nozzle 18 connected to the top end of the flow distribution plate 5, and a glue inlet channel 19 arranged in the main injection nozzle 18 and communicated with the glue material channel 1. During injection molding, the rubber material in a molten state flows into the main injection nozzle 18 through the rubber inlet of the rubber inlet channel 19, the rubber material flows into the rubber inlet of the rubber material channel I1 from the rubber outlet of the rubber inlet channel 19 of the main injection nozzle 18, and the rubber material flows into the flow distribution plate 5; the glue is continuously conveyed to the splitter plate 5 through the main injection nozzle 18, and the glue split by the splitter plate 5 uniformly flows into the plurality of transition hot nozzles 6, so that the injection molding efficiency of the hot runner mold is improved.

All the technical features in the embodiment can be freely combined according to actual needs.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Claims

1. A hot runner mold, comprising: comprises a flow distribution plate (5), a sizing material channel I (1) arranged in the flow distribution plate (5), at least two transition hot nozzles (6) connected with the flow distribution plate (5), a sizing material channel II (2) arranged in the transition hot nozzles (6) and communicated with the sizing material channel I (1), and a hot nozzle (7) connected with the transition hot nozzles (6), the hot nozzle (7) comprises a hot nozzle body, a sizing material channel III (3) which is arranged in the hot nozzle body and communicated with the sizing material channel II (2), a shunting block (9) which is arranged in the hot nozzle body, a shunting channel (21) which is arranged in the shunting block (9) and communicated with the sizing material channel III (3), a plurality of hot nozzle heads (8) which are respectively arranged in the hot nozzle body, a sizing material channel IV (4) which is arranged in the hot nozzle heads (8) and a fixing device (10) which is arranged in the hot nozzle body, wherein the sizing material channel IV (4) of the plurality of hot nozzle heads (8) is respectively communicated with the shunting channel (21); the plurality of hot nozzle heads (8) are respectively and tightly connected with the shunting blocks (9); the fixing device (10) is used for fixing the shunting block (9) in the hot nozzle body.

2. The hot-runner mold of claim 1, wherein: the hot nozzle (7) further comprises an installation cavity (12) arranged in the hot nozzle body and a plurality of first through holes (13) which are arranged in the hot nozzle body and communicated with the installation cavity (12), and the installation cavity (12) is communicated with the second glue material channel (2); the shunting block (9) is arranged in the mounting cavity (12); the hot nozzle head (8) is arranged in the first through hole (13); the fixing device (10) is used for fixing the shunting block (9) in the installation cavity (12).

3. A hot-runner mold, according to claim 2, wherein: the hot nozzle (7) further comprises a fixing cavity (11) and a plurality of second through holes (14) which are arranged in the hot nozzle body; the mounting cavity (12) is communicated with the fixing cavity (11); the second through holes (14) are respectively communicated with the mounting cavity (12); fixing device (10) include detachably connect in fixed chamber (11) and can with divide the fixing base (15) of flow distribution block (9) the bottom conflict and respectively detachably set up in a plurality of through-hole two (14) and can with divide a plurality of mounting (16) of flow distribution block's (9) circumference conflict.

4. A hot-runner mold, according to claim 3, wherein: the number of the second through holes (14) and the number of the first through holes (13) are two, and one first through hole (13) and one second through hole (14) are coaxially arranged.

5. The hot-runner mold according to any one of claims 1 to 4, wherein: the shunting blocks (9) are rectangular.

6. The hot-runner mold of claim 1, wherein: the glue material channels (4) of the plurality of hot nozzle heads (8) are respectively vertical to the flow dividing channels (21).

7. The hot-runner mold of claim 6, wherein: a guide surface (17) is arranged in the flow dividing channel (21).

8. The hot-runner mold of claim 1, wherein: the lateral wall of hot mouth body outwards the protruding spacing boss (20) that establishes into.

9. A hot-runner mold, according to claim 2, wherein: a limiting step (22) is arranged in the first through hole (13), an annular boss (23) is arranged on the heat nozzle head (8), and the annular boss (23) is abutted to the limiting step (22).

10. The hot-runner mold of claim 1, wherein: the flow distribution plate (5), the transition hot nozzle (6) and the hot nozzle body are all externally coated with heating devices.