CN115179497A - Injection mold - Google Patents

Abstract

The invention provides an injection mold, which comprises a body, wherein the body comprises a fixed mold and a movable mold; the injection molding module comprises a first module arranged on the fixed die and a second module arranged on the movable die, and when the injection molding die is closed, the first module and the second module enclose a plurality of cavities; the injection molding module is provided with at least one cooling piece, the cooling piece is arranged on the first module and/or the second module, and the cooling piece is arranged outside the cavity in a surrounding manner; wherein, the number of the injection molding modules is at least two. The injection mold is provided with the plurality of injection modules, and each injection module is provided with the plurality of cavities, so that the working efficiency of the injection mold is improved; simultaneously, each injection molding module is at least provided with a cooling piece around the outside of the cavity, so that the independent cooling of the cavity on each injection molding module is realized, and the cooling efficiency of the injection mold is improved.

Description

Injection mold

【Technical field】

The present invention relates to the technical field of injection moulds, in particular to an injection mould.

【Background technique】

The injection mold of the prior art is provided with a plurality of cavities, and heat dissipation water channels are arranged around the cavities to dissipate heat. Usually, the cooling water channel has a liquid inlet and a liquid outlet, and multiple branches are arranged between the liquid inlet and the liquid outlet, so that the cooling water channel can surround multiple cavities. The heat dissipation effect of the mold is poor and the heat dissipation efficiency is low.

Therefore, it is necessary to provide an injection mold with a high heat dissipation effect.

[Content of the invention]

The purpose of the present invention is to provide an injection mold with high heat dissipation efficiency.

The technical scheme of the present invention is as follows: the injection mold comprises:

The body, the body includes a fixed mold and a movable mold;

an injection molding module, the injection molding module includes a first module mounted on the fixed mold and a second module mounted on the movable mold, and when the injection mold is closed, the first module and the second module enclose a plurality of cavities;

The injection molding module is provided with at least one cooling piece, the cooling piece is installed on the first module and/or the second module, and the cooling piece is arranged outside the cavity;

Wherein, the number of injection molding modules is at least two.

In a possible design, the cooling element includes a body portion surrounding the cavity, a first extension portion provided at one end of the body portion, and a second extension portion provided at the other end of the body portion, the first extension portion being along the injection molding The length and/or width direction of the mold extends to the outside of the injection mold, and the second extension portion extends to the outside of the injection mold along the length and/or width direction of the injection mold;

The body part is provided with a first channel, the first extension part is provided with a second channel, the second extension part is provided with a third channel, and both the second channel and the third channel communicate with the first channel;

One end of the first extension part away from the body part is provided with a liquid inlet, and the second channel communicates with the outside world through the liquid inlet;

One end of the second extension portion away from the body portion is provided with a liquid outlet, and the third passage communicates with the outside through the liquid outlet.

In a possible design, the cooling element further includes a third extension part and a fourth extension part, one end of the third extension part is connected with the first extension part, the other end is connected with the body part, and one end of the fourth extension part is connected with the first extension part The two extension parts are connected, the other end is connected with the body part, and the third extension part and the fourth extension part both extend along the moving direction of the movable mold;

The third extension is provided with a fourth channel, and the first channel and the second channel communicate with each other through the fourth channel;

The fourth extension is provided with a fifth channel through which the first channel communicates with the third channel.

In a possible design, the body part includes a first body connected with the first extension part and a second body connected with the second extension part, and both the first body and the second body are provided with a first channel;

The cooling element further includes a fifth extension part, one end of the fifth extension part is connected with the end of the first body away from the first extension part, the other end of the fifth extension part is connected with the end of the second body away from the second extension part, and along the The moving direction of the movable mold, the fifth extension part is arranged above or below the body part;

The fifth extension is provided with a sixth channel, and the first channel in the first body communicates with the first channel in the second body through the sixth channel.

In a possible design, the first module and/or the second module is provided with an installation groove, and the cooling element is installed in the installation groove;

A sealing element is arranged between the cooling element and the installation groove.

In a possible design, one of the first module and the second module is provided with a positioning member, and the other is provided with a positioning matching member. When the injection mold is closed, a part of the positioning member can protrude into the positioning matching member.

In a possible design, the positioning member includes a first positioning body and a positioning portion disposed on the first positioning body and extending along the moving direction of the movable mold, and the positioning matching member includes a second positioning body and an inner edge of the second positioning body. The matching groove extending in the moving direction of the movable die;

When the injection mold is closed, at least part of the positioning portion can extend into the matching groove, and the side wall of the positioning portion can abut with the peripheral wall of the matching groove.

In a possible design, the injection molding module is provided with a main flow channel and a branch flow channel, the main flow channel and the cavity are connected through a branch flow channel, a nozzle is provided at one end of the main channel away from the branch flow channel, and the main channel communicates with the outside through the nozzle .

In a possible design, the branch flow channel includes a first flow channel, a second flow channel and a third flow channel in communication;

Both ends of the first flow channel are respectively connected with the adjacent cavities;

Both ends of the second flow channel are respectively connected with the adjacent first flow channels, and the second flow channel divides the first flow channel into a first left flow channel and a first right flow channel with the same length;

One end of the third flow channel is connected with the main flow channel, and the other end is connected with the second flow channel, and the third flow channel divides the second flow channel into a second left flow channel and a second right flow channel with the same length.

In a possible design, the injection molding module includes at least a first injection molding module and a second injection molding module, the mold cavity in the first injection molding module is the first mold cavity, and the mold cavity in the second injection molding module is the second mold cavity;

The shape of the first cavity is the same as the shape of the second cavity, or the shape of the first cavity is different from the shape of the second cavity.

The beneficial effects of the present invention are that: the injection molding module is provided with multiple cavities, and the number of injection molding modules is multiple, which increases the working efficiency of the injection molding mold; and one injection molding module is provided with at least one cooling member arranged around the outside of the cavity. , to achieve independent cooling of the cavity on each injection molding module, thereby improving the cooling efficiency of the injection mold.

【Description of drawings】

1 is a schematic structural diagram of a fixed mold of an injection mold provided by the present invention in a specific embodiment;

2 is a schematic structural diagram of a movable mold of an injection mold provided by the present invention in a specific embodiment;

Fig. 3 is the structural representation of the first module in Fig. 1;

FIG. 4 is a schematic structural diagram of the cavity, the main flow channel and the branch flow channel in FIG. 3;

Fig. 5 is the structural representation of the cooling element in Fig. 3;

6 is a schematic structural diagram of a positioning assembly of an injection mold provided by the present invention in a specific embodiment;

Fig. 7 is the structural representation of the positioning member in Fig. 6;

FIG. 8 is a schematic structural diagram of the positioning fitting in FIG. 6 .

Reference number:

1- Ontology;

11-Fixed mold;

12- moving mold;

2-Injection module;

21 - the first module;

22 - the second module;

23-cavity;

231 - the first cavity;

232 - the second cavity;

233 - the third cavity;

234 - the fourth cavity;

235 - sub-cavity;

24 - main channel;

241 - spout;

25 - branch channel;

251 - the first runner;

251a - first left runner;

251b - the first right runner;

252 - Second runner;

252a - second left runner;

252b - the second right runner;

253 - the third runner;

26 - the first injection molding module;

27- The second injection molding module;

28- The third injection molding module;

29- the fourth injection molding module;

3- cooling parts;

31 - body part;

311 - first channel;

312 - the first body;

313 - the second body;

32 - the first extension;

321 - second channel;

322 - liquid inlet;

33 - the second extension;

331 - the third channel;

332 - liquid outlet;

34 - the third extension;

341 - the fourth channel;

35 - the fourth extension;

351 - fifth channel;

36 - fifth extension;

361 - sixth channel;

4-seals;

5- Positioning components;

51 - Positioning piece;

511 - the first positioning body;

511a - the first mounting hole;

512 - positioning part;

52 - Positioning fittings;

521 - the second positioning body;

521a - the second mounting hole;

522 - Mating groove.

【Detailed ways】

The present invention will be further described below with reference to the accompanying drawings and embodiments.

The present invention provides an injection mold, as shown in FIG. 1 and FIG. 2 , comprising a main body 1 , an injection molding module 2 and a cooling member 3 mounted on the injection molding module 2 . The body 1 includes a movable mold 12 and a fixed mold 11, and the injection molding module 2 includes a first module 21 installed on the fixed mold 11 and a second module 22 installed in the movable mold 12. When the injection mold is closed (ie, the movable mold 12 and the fixed mold 11 closed), the first module 21 and the second module 22 enclose a plurality of mold cavities 23 , and the cooling element 3 is enclosed outside the mold cavity 23 , so that the cooling element 3 can cool the mold cavity 23 .

Wherein, the number of injection molding modules 2 may be one or more, so that the injection mold can mold multiple parts at the same time, thereby improving the working efficiency of the injection mold. When there are multiple injection molding modules 2 , each injection molding module 2 is independently installed on the body 1 , so as to facilitate installation, disassembly, maintenance and replacement of the injection molding modules 2 . The present invention is described by taking four injection molding modules 2 as an example.

Specifically, as shown in FIG. 1 and FIG. 2 , the four injection molding modules 2 are respectively a first injection molding module 26 , a second injection molding module 27 , a third injection molding module 28 and a fourth injection molding module 29 , which are arranged in the first injection molding module 26 . The upper cavity 23 is the first cavity 231 , the cavity 23 disposed on the second injection module 27 is the second cavity 232 , the cavity 23 disposed on the third injection module 28 is the third cavity 233 , The cavity 23 provided on the fourth injection molding module 29 is the fourth cavity 234 . The shapes of the parts formed by the first cavity 231, the second cavity 232, the third cavity 233 and the fourth cavity 234 may be the same or different. When the shapes of the parts formed by the cavity 233 and the fourth cavity 234 are the same, the working efficiency of the injection mold can be further improved; when the first cavity 231, the second cavity 232, the third cavity 233 and the fourth cavity When the shapes of the parts formed by 234 are different, the injection mold can mold a variety of parts at the same time, thereby improving the working performance of the injection mold.

As shown in FIGS. 1-4 , the first cavity 231 , the second cavity 232 , the third cavity 233 and the fourth cavity 234 include a plurality of sub-cavities 235 . Among the multiple cavities 23 included in a cavity 231, the shapes of the molded parts may be the same or different.

Specifically, as shown in FIG. 3 and FIG. 4 , the injection molding module 2 (taking the first injection molding module 26 as an example) is provided with a main flow channel 24 and a branch flow channel 25 , and the main flow channel 24 and the cavity 23 communicate with each other through the branch flow channel 25 . A nozzle 241 is provided at one end of the main channel 24 away from the branch channel 25 , and the main channel 24 communicates with the outside through the nozzle 241 . When there are multiple injection molding modules 2 , each injection molding module 2 is provided with a nozzle 241 to ensure that the multiple injection molding modules 2 can simultaneously pour materials into the cavity 23 , thereby ensuring the casting balance of each injection molding module 2 , reducing the risk of incomplete filling of individual sub-cavities 235 after pouring is stopped, thereby improving the working quality of the injection mold. At the same time, each injection molding module 2 independently clamps the material handle and the shear gate, so that the injection molding cycle is no longer limited by the gate shearing cycle, thereby shortening the molding production cycle. In addition, the opening and closing of each nozzle 241 are independently set, so that the operator can choose the opening quantity of the nozzle 241 according to the actual production requirements, so as to control the production quantity of the product, thereby increasing the working performance of the injection mold.

The branch flow channel 25 includes a first flow channel 251, a second flow channel 252 and a third flow channel 253 in communication; both ends of the first flow channel 251 are respectively connected with the adjacent sub-cavities 235; both ends of the second flow channel 252 are respectively It is connected with the adjacent first flow channel 251, and the second flow channel 252 divides the first flow channel 251 into a first left flow channel 251a and a first right flow channel 251b with the same length; one end of the third flow channel 253 is connected to the main flow channel. 24 is connected, the other end is connected with the second flow channel 252, and the third flow channel 253 divides the second flow channel 252 into a second left flow channel 252a and a second right flow channel 252b with the same length.

In this embodiment, one first flow channel 251 communicates with a plurality of sub-cavities 235 at the same time (take two sub-cavities 235 as an example), and a second flow channel 252 communicates with a plurality of first flow channels 251 at the same time (take two sub-cavities 235 as an example) at the same time Take the first flow channel 251 as an example), a third flow channel 253 communicates with a plurality of second flow channels 252 at the same time (take two second flow channels 252 as an example), and the main flow channel 24 communicates with a plurality of third flow channels 253 at the same time. During the operation of the injection mold, the material can flow into the plurality of third flow channels 253 through the main flow channel 24 at the same time, into the plurality of second flow channels 252 through the third flow channels 253 at the same time, and into the first flow channel through the second flow channels 252 at the same time. 251 , the plurality of sub-cavities 235 flow into the plurality of sub-cavities 235 simultaneously through the first flow channel 251 , so that the plurality of sub-cavities 235 are formed at the same time, thereby improving the working efficiency of the injection mold.

The second flow channel 252 divides the first flow channel 251 into a first left flow channel 251a and a first right flow channel 251b with the same length, that is, the connection position of the second flow channel 252 and the first flow channel 251 is located in the first flow channel 251 The third flow channel 253 divides the second flow channel 252 into a second left flow channel 252a and a second right flow channel 252b of the same length, that is, the connection position of the third flow channel 253 and the second flow channel 252 is located in the first In the middle of the second flow channel 252, under the condition of the same material flow speed, it can ensure that the material flows into the sub-cavity 235 at the same time, thereby further improving the working quality of the injection mold.

Specifically, as shown in FIGS. 1-3 , at least one cooling element 3 is provided on one injection molding module 2 to realize independent cooling of the cavities 23 on each injection molding module 2 , thereby improving the cooling efficiency of the injection mold. The cooling element 3 is installed on the first module 21 and/or the second module 22 , so as to increase the variety and flexibility of the installation position of the cooling element 3 . The first module 21 and/or the second module 22 is provided with an installation groove (not marked in the figure), the cooling element 3 is installed in the installation groove, and a sealing element 4 is arranged between the cooling element 3 and the installation groove, reducing the cooling element 3 The risk of leakage of the internal coolant affecting the operation of the injection mold, thereby improving the airtightness, working stability and safety of the injection mold.

The specific structure of the cooling element 3 is shown in FIG. 5 . The cooling element 3 includes a main body portion 31 surrounding the cavity 23 , a first extending portion 32 disposed at one end of the main body portion 31 , and a first extending portion 32 disposed at the other end of the main body portion 31 . Two extension parts 33, the first extension part 32 extends out of the injection mold along the length and/or width direction of the injection mold, and the second extension part 33 extends out of the injection mold along the length and/or width direction of the injection mold; the body part 31 A first channel 311 is provided, a second channel 321 is provided on the first extension 32, a third channel 331 is provided on the second extension 33, and both the second channel 321 and the third channel 331 communicate with the first channel 311; The end of the extension part 32 away from the main body part 31 is provided with a liquid inlet 322, and the second channel 321 communicates with the outside world through the liquid inlet 322; the end of the second extension part 33 away from the main body part 31 is provided with a liquid outlet 332, and the third channel 331 communicates with the outside through the liquid outlet 332 .

In this embodiment, during the working process of the cooling element 3, the external cooling liquid enters the second channel 321 through the liquid inlet 322, flows through the first channel 311, and flows out through the liquid outlet 332 at the end of the third channel 331. The first extension part 32 and the second extension part 33 can facilitate the communication between the first channel 311 and the outside world, thereby simplifying the structure of the cooling element 3 .

More specifically, as shown in FIG. 5 , the cooling member 3 further includes a third extension portion 34 and a fourth extension portion 35 . One end of the third extension portion 34 is connected to the first extension portion 32 , and the other end is connected to the body portion 31 . One end of the fourth extension part 35 is connected to the second extension part 33 and the other end is connected to the body part 31 . The third extension part 34 and the fourth extension part 35 both extend along the moving direction of the movable mold 12 ; the third extension part 34 is provided with There is a fourth channel 341 through which the first channel 311 and the second channel 321 communicate; the fourth extension 35 is provided with a fifth channel 351 through which the first channel 311 and the third channel 331 communicate.

In this embodiment, the first extension part 32 and the main body part 31 are connected by the third extension part 34 , and the second extension part 33 and the main body part 31 are connected by the fourth extension part 35 . Adjusting the lengths of the third extension part 34 and the fourth extension part 35 according to the installation requirements increases the diversity and flexibility of the arrangement positions of the first extension part 32 and the second extension part 33 . Since both the third extension part 34 and the fourth extension part 35 extend along the moving direction of the movable mold 12, the cooling liquid in the second channel 321 can be accelerated under the action of its own gravity after entering the fourth channel 341, thereby lifting the The flow speed of the cooling liquid in the fourth channel 341 and the fifth channel 351 is improved, thereby improving the cooling efficiency of the cooling element 3 .

More specifically, as shown in FIG. 5 , the body part 31 includes a first body 312 connected with the first extension part 32 and a second body 313 connected with the second extension part 33 , both of the first body 312 and the second body 313 A first channel 311 is provided; the cooling element 3 further includes a fifth extension part 36, one end of the fifth extension part 36 is connected to the end of the first body 312 away from the first extension part 32, and the other end of the fifth extension part 36 is connected to the first body 312. The two main bodies 313 are connected at one end away from the second extending portion 33, and along the moving direction of the movable die 12, the fifth extending portion 36 is disposed above or below the main body portion 31; the fifth extending portion 36 is provided with a sixth channel 361, the first The first channel 311 in the first body 312 communicates with the first channel 311 in the second body 313 through the sixth channel 361 .

In this embodiment, the first body 312 and the second body 313 are connected by a fifth extension, and along the moving direction of the movable mold 12 , the fifth extension 36 is disposed above or below the body portion 31 . When the cooling liquid in the body 312 flows to the sixth channel 361, the cooling liquid can quickly enter the second body 313 through the sixth channel 361 under the action of its own pressure or gravity, thereby increasing the cooling liquid in the first channel 311. The flow speed of the cooling element 3 further improves the cooling efficiency of the cooling element 3 .

In addition, as shown in FIG. 1-FIG. 3, one of the first module 21 and the second module 22 is provided with a positioning member 51, and the other is provided with a positioning matching member 52 (in the present invention, the positioning member 51 is installed on the first module 51). The module 21 and the positioning fitting 52 are installed on the second module 22 as an example), when the injection mold is closed, a part of the positioning member 51 can extend into the positioning fitting 52, so as to achieve precise positioning during the closing process of the injection mold and reduce the movement of the injection mold. The positional deviation during the movement of the mold 12 causes the risk that the cavity 23 on the first module 21 and the cavity 23 on the second module 22 cannot be closed, thereby improving the stability of the movement of the movable mold 12 and improving the injection mold. Work stability.

As shown in FIG. 6 , the positioning member 51 and the positioning matching member 52 constitute the positioning assembly 5. When the number of injection molding modules 2 is one, the number of positioning assemblies 5 is multiple to increase the positioning accuracy of the positioning assembly 5; When there are multiple modules 2 , each injection module 2 is provided with at least one positioning component 5 , which improves the positioning accuracy of each injection module 2 while ensuring the overall positioning accuracy of the injection mold. In the present invention, each injection molding module 2 is provided with four positioning assemblies 5 .

The specific structure of the positioning assembly 5 is shown in FIGS. 6-8 . The positioning member 51 includes a first positioning body 511 and a positioning portion 512 disposed on the first positioning body 511 and extending along the moving direction of the movable mold 12 . The positioning matching member 52 includes The second positioning body 521 and the matching groove 522 disposed in the second positioning body 521 and extending along the moving direction of the movable mold 12; when the injection mold is closed, at least part of the positioning portion 512 can extend into the matching groove 522, and the positioning portion 512 The side wall can abut against the peripheral wall of the fitting groove 522 .

In this embodiment, during the closing process of the injection mold, the positioning portion 512 can extend into the matching groove 522 , so that the side wall of the positioning portion 512 abuts the peripheral wall of the matching groove 522 , and the positioning portion 512 can move along the matching groove 522 The movement in the extension direction of the locating component 5 simplifies the structure of the locating part 512 and the locating matching part while ensuring the locating accuracy of the locating assembly 5 .

More specifically, as shown in FIGS. 6-8 , the first positioning body 511 is provided with a first mounting hole 511a, and the positioning member 51 is mounted on the first module 21 through the first mounting hole 511a; the second positioning body 521 is provided with a first mounting hole 511a. There are two mounting holes 521a, and the positioning fitting 52 is mounted on the second module 22 through the second mounting holes 521a. Providing the first mounting hole 511 a and the second mounting hole 521 a simplifies the connection structure between the positioning assembly 5 and the injection molding module 2 , thereby simplifying the structure of the positioning assembly 5 and the injection molding module 2 . In the present application, both the first mounting hole 511a and the second mounting hole 521a are threaded holes.

The above are only the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these belong to the present invention. scope of protection.

Claims (10)

1. an injection mould, it is characterised in that the injection mould comprises: a body, the body includes a fixed mold and a movable mold; An injection molding module, the injection molding module includes a first module mounted on the fixed mold and a second module mounted on the movable mold, when the injection mold is closed, the first module and the second module enclose multiple cavities; The injection molding module is provided with at least one cooling element, the cooling element is mounted on the first module and/or the second module, and the cooling element is surrounded outside the cavity; Wherein, the number of the injection molding modules is at least two. 2 . The injection mold according to claim 1 , wherein the cooling member comprises a body portion surrounding the cavity, a first extension portion provided at one end of the body portion, and a first extension portion provided on the A second extension part at the other end of the body part, the first extension part extends out of the injection mold along the length and/or width direction of the injection mold, and the second extension part extends along the length and/or width of the injection mold / or extending to the outside of the injection mold in the width direction; The body part is provided with a first channel, the first extension part is provided with a second channel, the second extension part is provided with a third channel, and both the second channel and the third channel are connected with the first channel. a channel connection; An end of the first extension portion away from the body portion is provided with a liquid inlet, and the second channel communicates with the outside through the liquid inlet; An end of the second extension portion away from the body portion is provided with a liquid outlet, and the third passage communicates with the outside through the liquid outlet. 3 . The injection mold according to claim 2 , wherein the cooling element further comprises a third extension part and a fourth extension part, one end of the third extension part is connected with the first extension part, and the other end is connected with the first extension part. 4 . One end is connected with the body part, one end of the fourth extension part is connected with the second extension part, the other end is connected with the body part, the third extension part and the fourth extension part are both along the The movement direction of the moving die is extended; The third extension is provided with a fourth channel, and the first channel communicates with the second channel through the fourth channel; The fourth extension is provided with a fifth channel through which the first channel communicates with the third channel. 4 . The injection mold according to claim 2 , wherein the body portion comprises a first body connected with the first extension portion and a second body connected with the second extension portion, and the first body portion is connected with the second extension portion. Both a body and the second body are provided with a first channel; The cooling element further includes a fifth extension part, one end of the fifth extension part is connected with an end of the first body away from the first extension part, and the other end of the fifth extension part is connected with the second extension part. one end of the main body away from the second extension part is connected, and along the moving direction of the movable mold, the fifth extension part is arranged above or below the main body part; The fifth extension is provided with a sixth channel through which the first channel in the first body communicates with the first channel in the second body. 5 . The injection mold according to claim 1 , wherein the first module and/or the second module is provided with an installation groove, and the cooling element is installed in the installation groove. 6 . ; A sealing member is arranged between the cooling member and the installation groove. 6 . The injection mold according to claim 1 , wherein one of the first module and the second module is provided with a positioning member, and the other is provided with a positioning fitting, and the injection mold is closed. 7 . At the time, a part of the positioning member can extend into the positioning matching member. 7 . The injection mold according to claim 6 , wherein the positioning member comprises a first positioning body and a positioning portion provided on the first positioning body and extending along the moving direction of the movable mold. 7 . The matching piece includes a second positioning body and a matching groove arranged in the second positioning body and extending along the moving direction of the movable mold; When the injection mold is closed, at least a part of the positioning portion can extend into the matching groove, and the side wall of the positioning portion can abut with the peripheral wall of the matching groove. 8 . The injection mold according to claim 1 , wherein the injection molding module is provided with a main flow channel and a branch flow channel, the main flow channel is communicated with the cavity through a branch flow channel, and the main flow channel is far away from all the cavities. 9 . One end of the branch channel is provided with a nozzle, and the main channel communicates with the outside through the nozzle. 9 . The injection mold according to claim 8 , wherein the branch flow channel comprises a first flow channel, a second flow channel and a third flow channel in communication; 9 . Both ends of the first flow channel are respectively connected with the adjacent cavities; Two ends of the second flow channel are respectively connected with the adjacent first flow channels, and the second flow channel divides the first flow channel into a first left flow channel and a first right flow channel with the same length ; One end of the third flow channel is connected with the main flow channel, and the other end is connected with the second flow channel, and the third flow channel divides the second flow channel into a second left flow channel with the same length and the second right runner. 10 . The injection mold according to claim 1 , wherein the injection molding module comprises at least a first injection molding module and a second injection molding module, and the cavity in the first injection molding module is a first cavity, and the 10 . The cavity in the second injection molding module is the second cavity; The shape of the first cavity is the same as the shape of the second cavity, or the shape of the first cavity is different from the shape of the second cavity.

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