Modular splitter plate and injection mold

Abstract

A modular splitter plate comprises a nozzle splitter piece, a plurality of hot nozzle connecting pieces and a plurality of connecting assemblies. The top surface of the nozzle shunting piece is provided with a sprue, and at least part of side surfaces of the nozzle shunting piece are respectively provided with a shunting port communicated with the sprue; a runner outlet is formed in the bottom surface of the hot nozzle connecting piece, and a connecting port communicated with the runner outlet is formed in the side surface of the hot nozzle connecting piece; mounting grooves are formed in the nozzle shunting piece and all the hot nozzle connecting pieces; the connecting assembly comprises a first connecting sleeve and a first hot runner pipe; the two ends of the first connecting sleeve are connected with the nozzle flow dividing piece and the hot nozzle connecting piece correspondingly, and a first mounting cavity penetrating through the two ends of the first connecting sleeve is formed in the first connecting sleeve. The first hot runner pipe is arranged in the first mounting cavity and spaced from the inner side wall of the first connecting sleeve, and the two ends of the first hot runner pipe are in sealed connection with the flow dividing opening and the connecting opening correspondingly. The invention further provides an injection mold using the modular splitter plate. Compared with the prior art, the splitter plate provided by the invention obviously reduces the use energy consumption and the influence caused by thermal expansion.

Description

Technical Field

[0001] The invention belongs to the technical field of manifolds, and in particular relates to a modular manifold and an injection mold using the modular manifold. Background Art

[0002] In the injection molding process, the manifold is the core component of the hot runner system. Its function is to evenly distribute the molten plastic from the injection molding machine nozzle to multiple hot nozzles and finally fill the mold cavity. In order to ensure the fluidity, temperature uniformity and molding quality of the molten plastic in the runner, the entire manifold needs to be heated, and the top and bottom surfaces of the manifold are covered with heating wires. Since the manifold needs to be connected to hot nozzles, cylinders and other devices, the width of the manifold needs to be designed to a certain size, and slots need to be opened on the manifold to install the heating wires. In order to ensure the strength of the manifold and alleviate the effect of the manifold heating and expansion on the coaxiality of the manifold and the hot nozzle, the width of the manifold also needs to be designed to a certain size. This results in the heating wire needing to heat the larger manifold, and the manifold has high energy consumption, which increases the product production and manufacturing costs.

[0003] Since the manifold is in a high-temperature and high-pressure working environment for a long time, this results in: after the manifold expands due to heat, the cross-sectional area of ​​the internal flow channel changes, the melt flow balance is destroyed, and problems such as uneven product filling, shrinkage or flash are caused, which is particularly evident for products that require precision injection molding; after the manifold expands, the connection position between it and the mold mounting surface and the hot nozzle is offset, and the connection structure such as bolts is sheared or even broken, reducing the service life of the connection structure. It is also easy to cause melt leakage, resulting in downtime for maintenance and waste of raw materials. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a modular manifold.

[0005] To achieve the above objectives, the present invention discloses a modular manifold, comprising a nozzle manifold, a plurality of hot nozzle connectors and a plurality of connection assemblies, wherein a hot nozzle connector is connected and communicated with the nozzle manifold through a connection assembly;

[0006] The top surface of the nozzle flow divider is provided with a gate for communicating with the main nozzle, and at least part of the side surfaces of the nozzle flow divider are respectively provided with a flow diversion port communicating with the gate;

[0007] The bottom surface of the hot nozzle connecting piece is provided with a flow channel outlet, and the side surface of the hot nozzle connecting piece is provided with a connecting port communicating with the flow channel outlet;

[0008] The nozzle flow divider and all the hot nozzle connecting parts are provided with a mounting groove for mounting the first heating element;

[0009] The connecting component includes a first connecting sleeve and a first hot runner tube;

[0010] Both ends of the first connecting sleeve are respectively connected to the nozzle shunt and the hot nozzle connecting piece. A first installation cavity penetrating both ends thereof is provided inside the first connecting sleeve;

[0011] The first hot runner tube is arranged inside the first installation cavity and is spaced from the inner side wall of the first connecting sleeve. Both ends of the first hot runner tube are hermetically connected to the shunt port and the connection port respectively.

[0012] In one embodiment, a first groove is formed by concaving in the shunt port and / or the connection port, and the end of the first hot runner tube is hermetically inserted into the first groove.

[0013] In another embodiment, a space is provided between the bottom surface of the first groove and the end surface of the first hot runner tube. During injection molding, the end surface of the first hot runner tube presses against the bottom surface of the first groove.

[0014] In another embodiment, the first connecting sleeve is detachably connected to the nozzle shunt and the hot nozzle connecting piece.

[0015] In another embodiment, at least part of the connecting component is a segmented connecting component. The segmented connecting component further includes an adapter. A transfer inlet is provided on one side surface of the adapter, and at least one of the remaining side surfaces is provided with a transfer outlet communicating with the transfer inlet;

[0016] The first connecting sleeve and the first hot runner tube of the segmented connecting component respectively include multiple sleeve segments and multiple hot runner tube segments. The nozzle shunt and the adapter, between two adapters, and between the adapter and the hot nozzle connecting piece are connected by one sleeve segment and communicated by one hot runner tube segment.

[0017] In another embodiment, the connecting component further includes a second heating element. The second heating element is arranged on the outer side wall of the first hot runner tube and is spaced from the inner side wall of the first connecting sleeve.

[0018] In another embodiment, connection ears extending radially outward are provided at both ends of the first connecting sleeve, and the two connection ears are respectively fixed to the nozzle shunt and the hot nozzle connecting piece by bolts.

[0019] The present invention also provides an injection mold using the above modular flow splitter plate.

[0020] An injection mold, comprising a hot runner plate, a manifold plate, a plurality of nozzles and a plurality of first heating elements, wherein the manifold plate is installed inside the hot runner plate, the manifold plate is the modular manifold plate described in any one of the above, each nozzle is installed at the bottom of a nozzle connector and communicates with each other, and each first heating element is installed in a mounting groove.

[0021] In one embodiment, the nozzle includes a second connecting sleeve, a second hot runner tube, a third heating element and a nozzle body;

[0022] Both ends of the second connecting sleeve are respectively connected to the nozzle connector and the nozzle body, and a second installation cavity penetrating through both ends thereof is provided inside the second connecting sleeve;

[0023] The nozzle body is provided with a runner inlet, the second hot runner tube is arranged in the second installation cavity and is spaced from the inner side wall of the second connecting sleeve, and both ends of the second hot runner tube are hermetically connected to the runner outlet and the runner inlet respectively;

[0024] The third heating element is arranged on the outer side wall of the second hot runner tube.

[0025] In another embodiment, a second groove is formed by concaving in the runner inlet and / or the runner outlet, and the end of the second hot runner tube is hermetically inserted into the second groove.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] In the entire connection assembly, the first hot runner tube is only used to connect the nozzle diverter and the nozzle connector, and the first connecting sleeve is used to connect and fix the nozzle diverter and the nozzle connector as a whole to ensure the overall structural strength of the manifold plate. Among them, the first hot runner occupies a very small volume in the entire connection assembly. During heating, only the first hot runner tube is heated, which significantly reduces the energy consumption during injection molding and reduces the production cost.

[0028] The first hot runner tube is arranged in the first installation cavity and is spaced from the inner side wall of the first connecting sleeve. In other words, the first installation cavity of the first connecting sleeve is larger than the first hot runner tube, which not only facilitates the installation of the first hot runner tube and avoids the difficulty in installing the first hot runner tube or even damaging the heating element installed on the first hot runner tube due to insufficient space in the first installation cavity. At the same time, the gap between the first connecting sleeve and the first hot runner tube can also be used as a heat insulation layer to insulate the first hot runner tube, reduce heat loss, improve the heating effect of the first hot runner tube, and further reduce energy consumption.

[0029] The connecting component only needs to heat the first hot runner tube to ensure the fluidity and temperature uniformity of the molten plastic inside the tube. The first connecting sleeve only serves as a connecting and fixing function and does not need to be heated. At the same time, there is a gap between the first connecting sleeve and the first hot runner tube, and the heating element provided on the first hot runner tube later will not directly heat the first connecting sleeve. Therefore, during the injection molding process, the first connecting sleeve basically does not generate thermal expansion; the first hot runner tube occupies a small overall volume, and its axial expansion after heating has little impact on the entire manifold plate. Therefore, during the injection molding process, the connecting component has a minimal impact on the nozzle diverter and the hot nozzle connecting piece, which can ensure the coaxiality between the manifold plate and the hot nozzle and the connection reliability between the two.

[0030] Since the first connecting sleeve does not exert a radial force on the first hot runner tube and there is a gap outside the first hot runner tube, it can expand outward after being heated, significantly reducing the impact on the cross-sectional area of the internal flow channel of the tube, improving the stability of the melt flow inside the tube, and improving the injection molding quality.

[0031] For traditional manifold plates, due to their large size, large processing equipment is required, which has high requirements for the equipment and high production energy consumption. The manifold plate of the present application is set as a modular structure, and only small equipment is needed during manufacturing, with low requirements for the equipment and low production energy consumption. For the modular structure, each module can be made into a standard part, which can shorten the production cycle. At the same time, when maintenance and replacement are required, only some modules need to be replaced, and there is no need to replace the entire manifold plate, reducing costs. Description of the Drawings

[0032] Figure 1 Schematic perspective structure diagram of the modular manifold plate of Embodiment 1 equipped with a hot nozzle;

[0033] Figure 2 For Figure 1 Schematic exploded perspective structure diagram of the modular manifold plate equipped with a hot nozzle;

[0034] Figure 3 For Figure 1 Cross-sectional view of the modular manifold plate equipped with a hot nozzle;

[0035] Figure 4 For Figure 3 Local enlarged schematic diagram at A in

[0036] Nozzle diverter 100; gate 110; diversion port 120; first groove 121; mounting groove 130;

[0037] Hot nozzle connecting piece 200; runner outlet 210; connection port 220;

[0038] Connecting component 300; first connecting sleeve 310; first installation cavity 311; sleeve segment 312; first hot runner tube 320; hot runner joint tube 321; adapter 330; adapter inlet 331; second heating element 340;

[0039] Main nozzle 400;

[0040] Hot nozzle 500; second connecting sleeve 510; second installation cavity 511; second hot runner tube 520; third heating element 530; hot nozzle body 540; runner inlet 541; second groove 542;

[0041] First heating element 600;

[0042] Cylinder 700. Detailed implementation mode

[0043] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0044] Embodiment 1

[0045] A modular manifold, see Figure 1 , which includes a nozzle diverter 100, a plurality of hot nozzle connectors 200 and a plurality of connecting components 300. One hot nozzle connector 200 is connected and communicated with the nozzle diverter 100 through one connecting component 300. In this embodiment, there are five hot nozzle connectors 200, and correspondingly, there are also five connecting components 300.

[0046] See Figures 2 - 3 , the top surface of the nozzle diverter 100 is provided with a gate 110 for communicating with the main nozzle 400, and at least part of the side surfaces of the nozzle diverter 100 are respectively provided with diversion ports 120 communicating with the gate 110. There are three diversion ports 120 in the nozzle diverter 100 of this embodiment. The bottom surface of the hot nozzle connector 200 is provided with a runner outlet 210, and the side surface of the hot nozzle connector 200 is provided with a connection port 220 communicating with the runner outlet 210. The nozzle diverter 100 and all hot nozzle connectors 200 are provided with installation grooves 130 for installing the first heating element 600. The connecting component 300 includes a first connecting sleeve 310 and a first hot runner tube 320. The two ends of the first connecting sleeve 310 are respectively connected to the nozzle diverter 100 and the hot nozzle connector 200. Through the first connecting sleeves 310 of the plurality of connecting components 300, the nozzle diverter 100 and the plurality of hot nozzle connectors 200 can be connected to form an integral manifold. A first installation cavity 311 penetrating through its two ends is provided in the first connecting sleeve 310. The first hot runner tube 320 is arranged in the first installation cavity 311 and is spaced from the inner side wall of the first connecting sleeve 310. The two ends of the first hot runner tube 320 are respectively and hermetically connected to the diversion port 120 and the connection port 220.

[0047] The above modular flow splitter of this embodiment has the following advantages:

[0048] (1) In the entire connection assembly 300, the first hot runner tube 320 is only used to connect the nozzle splitter 100 and the hot nozzle connector 200, and the first connection sleeve 310 is used to connect and fix the nozzle splitter 100 and the hot nozzle connector 200 into a whole, ensuring the overall structural strength of the flow splitter. Among them, the volume of the first hot runner in the entire connection assembly 300 is very small. When heating, only the first hot runner tube 320 is heated, which significantly reduces the energy consumption during injection molding and reduces the production cost.

[0049] (2) The first hot runner tube 320 is arranged in the first installation cavity 311 and is spaced from the inner side wall of the first connection sleeve 310. In other words, the first installation cavity 311 of the first connection sleeve 310 is larger than the first hot runner tube 320. This not only facilitates the installation of the first hot runner tube 320, avoiding the difficulty of installing the first hot runner tube 320 or even damaging the heating element installed on the first hot runner tube 320 due to insufficient space in the first installation cavity 311, but also can use the gap between the first connection sleeve 310 and the first hot runner tube 320 for heat preservation, heat the first hot runner tube 320, reduce heat loss, improve the heating effect of the first hot runner tube 320, and further reduce energy consumption.

[0050] (3) The connection assembly 300 only needs to heat the first hot runner tube 320 to ensure the fluidity and temperature uniformity of the molten plastic in the tube. The first connection sleeve 310 only plays a role in connection and fixation and does not need to be heated. At the same time, the first connection sleeve 310 and the first hot runner tube 320 are spaced apart, and the heating element later installed on the first hot runner tube 320 will not directly heat the first connection sleeve 310. Therefore, during the injection molding process, the first connection sleeve 310 basically does not generate thermal expansion; the first hot runner tube 320 occupies a small overall volume, and its axial expansion after heating has little impact on the entire flow splitter. Therefore, during the injection molding process, the influence of the connection assembly 300 on the nozzle splitter 100 and the hot nozzle connector 200 is extremely small, which can ensure the coaxiality between the flow splitter and the hot nozzle 500 and the connection reliability between the two.

[0051] (4) Since the first connection sleeve does not exert a radial force on the first hot runner tube 320, there is a gap outside the first hot runner tube 320, and it can expand outward after being heated, significantly reducing the impact on the cross-sectional area of the flow channel in the tube, improving the stability of the melt flow in the tube, and improving the injection molding quality.

[0052] (5) The traditional flow splitter plate, due to its large size, requires large-scale processing equipment, has high requirements for the equipment, and high production energy consumption. The flow splitter plate of the present application is set as a modular structure. During manufacturing, only small equipment is needed, the requirements for the equipment are low, and the production energy consumption is low. For the modular structure, each module can be made into a standard part, which can shorten the production cycle. At the same time, when maintenance and replacement are needed, only some modules need to be replaced, and there is no need to replace the entire flow splitter plate, reducing costs.

[0053] In the present application, in order to avoid the thermal expansion of the first connection sleeve 310, a heat insulation member can be provided between the first connection sleeve 310 and the nozzle connecting member and the hot nozzle connecting member 200.

[0054] See Figures 3 - 4 , a first groove 121 is formed by concaving the flow splitting port 120 and / or the connection port 220. In this embodiment, both the flow splitting port 120 and the connection port 220 form the first groove 121. The end of the first hot runner tube 320 is hermetically inserted into the first groove 121, which ensures the sealing effect between the first hot runner tube 320 and the nozzle flow splitting member 100 and the hot nozzle connecting member 200.

[0055] Specifically, sealing glue is provided at both ends of the outer side wall of the first hot runner tube 320 to ensure the sealing effect.

[0056] Furthermore, a gap is provided between the bottom surface of the first groove 121 and the end surface of the first hot runner tube 320. During injection molding, the end surface of the first hot runner tube 320 presses against the bottom surface of the first groove 121. Providing a gap between the end surface of the first hot runner tube 320 and the bottom surface of the first groove 121 has the following effects: First, the first hot runner tube 320 will axially expand during the injection molding process, and both ends of the first hot runner tube 320 can expand to press against the bottom surface of the first groove 121, which further improves the sealing effect of the first hot runner tube 320; Second, compared with directly inserting the end of the first hot runner tube 320 to the bottom of the first groove 121, the gap setting can avoid a large axial force on the nozzle flow splitting member 100 and the hot nozzle connecting member 200 after thermal expansion, which may affect the coaxiality between the hot nozzle connecting member 200 and the hot nozzle 500 and reduce the connection reliability; Third, the length of the first hot runner tube 320 is less than the distance between the bottom surfaces of two adjacent first grooves 121. During installation, there is no need to completely insert it to the bottom of the first groove 121, and the assembly is simpler.

[0057] In this embodiment, the first connection sleeve 310 is detachably connected to the nozzle flow splitting member 100 and the hot nozzle connecting member 200. Optionally, connection ears extend radially outward along both ends of the first connection sleeve 310, and avoidance holes are provided on the connection ears. Bolts pass through the avoidance holes to connect the first connection sleeve 310 to the nozzle flow splitting member 100 and the hot nozzle connecting member 200. Through the detachable connection method, it is convenient for later maintenance.

[0058] In this embodiment, referring to Figures 1 - 2 , a hot nozzle connecting member 200 is located beside the nozzle splitter 100, and the two are directly connected and communicated through the first connecting sleeve 310 and the first hot runner pipe 320 of a straight pipe. For the remaining four hot nozzle connecting members 200, the corresponding connecting assemblies 300 are segmented connecting assemblies 300. The segmented connecting assembly 300 further includes an adapter 330. One side of the adapter 330 is provided with an adapter inlet 331, and at least one of the remaining sides is provided with an adapter outlet communicating with the adapter inlet 331. Among them, the number of adapter outlets is set according to actual requirements. Some only need to set two, and some need to set three. The first connecting sleeve 310 and the first hot runner pipe 320 of the segmented connecting assembly 300 respectively include multiple sleeve segments 312 and multiple hot runner pipe segments 321, and both the sleeve segments 312 and the hot runner pipe segments 321 are straight pipes. Between the nozzle splitter 100 and the adapter 330, between two adapters 330, and between the adapter 330 and the hot nozzle connecting member 200, they are connected by one sleeve segment 312 and communicated by one hot runner pipe segment 321. As can be seen from the drawings, there are shared flow channels in the connecting assemblies 300 of different hot nozzle connecting members 200. The adapter 330 is also provided with a mounting groove 130 capable of mounting the corresponding first heating element 600. Setting some of the connecting assemblies 300 as a segmented structure makes all pipes have a straight pipe structure. In this way, the structures of all sleeve segments 312 and the hot runner are the same, which is more suitable for making standard rooms, shortening the production cycle, and also facilitating later cleaning. In addition, it is also convenient for post-treatment of the inside of the pipeline, such as setting a coating or polishing, etc., to improve the quality of the pipe.

[0059] Referring to Figure 3 , the connecting assembly 300 further includes a second heating element 340. The second heating element 340 is arranged on the outer side wall of the first hot runner pipe 320, and the second heating element 340 is arranged at an interval from the inner side wall of the first connecting sleeve 310. Specifically, the second heating element 340 is a heating wire.

[0060] In this embodiment, when there is a machining error, causing a deviation in the lengths of the first connecting sleeve and the first hot runner pipe 320, which affects the connection sealing performance of the first hot runner pipe 320, the end surfaces of the first connecting sleeve or the first hot runner pipe 320 can be machined until the sealing performance is ensured.

[0061] Embodiment 2

[0062] An injection mold includes a hot runner plate, a splitter plate, a plurality of hot nozzles 500 and a plurality of first heating elements 600. The splitter plate is installed in the hot runner plate. The splitter plate is the modular splitter plate of Embodiment 1. Each hot nozzle 500 is installed at the bottom of a hot nozzle connecting member 200 and is communicated with each other. Each first heating element 600 is installed in a mounting groove 130.

[0063] In the prior art, a heating wire is also provided inside the hot nozzle 500, and the hot nozzle 500 will also expand due to heat, which causes the connection structure between the manifold plate and the hot nozzle 500 to be prone to stretching or even breaking problems, reducing the connection reliability. In this embodiment, the hot nozzle 500 includes a second connection sleeve 510, a second hot runner tube 520, a third heating element 530, and a hot nozzle body 540. The two ends of the second connection sleeve 510 are respectively connected to the hot nozzle connector 200 and the body of the hot nozzle 500. A second installation cavity 511 that penetrates through both ends thereof is provided inside the second connection sleeve 510. The hot nozzle body 540 is provided with a runner inlet 541. The second hot runner tube 520 is disposed inside the second installation cavity 511 and is spaced from the inner side wall of the second connection sleeve 510. The two ends of the second hot runner tube 520 are respectively and hermetically connected to the runner outlet 210 and the runner inlet 541. The third heating element 530 is disposed on the outer side wall of the second hot runner tube 520. The hot nozzle body 540 of the hot nozzle 500 adopts the existing hot nozzle 500, which can adapt to the installation holes of the hot nozzle 500 inside the injection mold, especially the installation holes near the cavity part. By providing the second connection sleeve 510, the second hot runner tube 520, and the third heating element 530, the hot nozzle 500 is applicable to usage scenarios that require a longer length, and at the same time, the hot nozzle 500 also has effects such as low energy consumption of the manifold plate and reducing the influence of thermal expansion on the connection reliability between the hot nozzle 500 and the manifold plate as in Embodiment 1.

[0064] In this embodiment, a second groove 542 is formed by concaving the runner inlet 541 and / or the runner outlet 210. Specifically, the runner inlet 541 and the runner outlet 210 are both formed with the second groove 542. The end of the second hot runner tube 520 is hermetically inserted into the second groove 542, and the end of the second hot runner tube 520 is hermetically inserted into the second groove 542.

[0065] Furthermore, a gap is provided between the bottom surface of the second groove 542 and the end surface of the second hot runner tube 520. During injection molding, the end surface of the second hot runner tube 520 presses against the bottom surface of the second groove 542. By providing the second groove 542, and the gap between the bottom surface of the second groove 542 and the end surface of the second hot runner tube 520 and the pressing fit during injection molding, the hot nozzle 500 can further improve the sealing effect of the second hot runner tube 520, improve the connection reliability between the manifold plate and the hot nozzle 500, and make the assembly simpler.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A modular manifold, characterized in that: It includes a nozzle flow divider, a plurality of hot nozzle connecting parts and a plurality of connecting components, wherein a hot nozzle connecting part is connected and communicated with the nozzle flow divider through a connecting component; The top surface of the nozzle flow divider is provided with a gate for communicating with the main nozzle, and at least part of the side surfaces of the nozzle flow divider are respectively provided with a flow diversion port communicating with the gate; The bottom surface of the hot nozzle connecting piece is provided with a flow channel outlet, and the side surface of the hot nozzle connecting piece is provided with a connecting port communicating with the flow channel outlet; The nozzle flow divider and all the hot nozzle connecting parts are provided with a mounting groove for mounting the first heating element; The connection assembly includes a first connection sleeve and a first hot runner pipe; The two ends of the first connecting sleeve are respectively connected to the nozzle diverter and the hot nozzle connecting piece, and a first installation cavity is provided in the first connecting sleeve to penetrate the two ends thereof; The first hot runner pipe is arranged in the first installation cavity and is spaced apart from the inner wall of the first connecting sleeve. Both ends of the first hot runner pipe are sealed and connected to the diversion port and the connecting port respectively.

2. The modular manifold according to claim 1, characterized in that: The diversion port and / or the connection port are concave to form a first groove, and the end of the first hot runner pipe is sealed and inserted in the first groove.

3. The modular manifold according to claim 2, characterized in that: The bottom surface of the first groove is spaced apart from the end surface of the first hot runner tube. During injection molding, the end surface of the first hot runner tube presses against the bottom surface of the first groove.

4. The modular manifold according to claim 1, characterized in that: The first connecting sleeve is detachably connected to the nozzle diverter and the hot nozzle connecting piece.

5. The modular manifold according to claim 1, characterized in that: At least part of the connection components are segmented connection components, and the segmented connection components further include a transfer member, one side of the transfer member is provided with a transfer inlet, and at least one of the remaining side surfaces is provided with a transfer outlet communicating with the transfer inlet; The first connecting sleeve and the first hot runner tube of the segmented connecting assembly respectively include multiple sleeve segments and multiple hot runner tube sections. The nozzle diverter and the adapter, the two adapters, and the adapter and the hot nozzle connector are connected through a sleeve segment and communicated through a hot runner tube section.

6. The modular manifold according to claim 1, characterized in that: The connection assembly also includes a second heating element, which is arranged on the outer side wall of the first hot runner tube and is spaced apart from the inner side wall of the first connection sleeve.

7. The modular manifold according to claim 1, characterized in that: Both ends of the first connecting sleeve are provided with connecting ears extending outward in the radial direction, and the two connecting ears are respectively fixed to the nozzle diverter and the hot nozzle connecting piece by bolts.

8. An injection mold, comprising a hot runner plate, a manifold plate, a plurality of hot nozzles and a plurality of first heating elements, wherein the manifold plate is installed in the hot runner plate, characterized in that: The manifold is a modular manifold as described in any one of claims 1 to 7, each hot nozzle is installed at the bottom of a hot nozzle connector and is interconnected, and each first heating element is installed in a mounting groove.

9. The injection mold according to claim 8, characterized in that: The hot nozzle comprises a second connecting sleeve, a second hot runner pipe, a third heating element and a hot nozzle body; The two ends of the second connecting sleeve are respectively connected to the hot nozzle connecting piece and the hot nozzle body, and a second installation cavity is provided in the second connecting sleeve to pass through the two ends of the second connecting sleeve; The hot nozzle body is provided with a flow channel inlet, the second hot runner pipe is arranged in the second installation cavity and is spaced apart from the inner side wall of the second connecting sleeve, and the two ends of the second hot runner pipe are respectively sealed and connected with the flow channel outlet and the flow channel inlet; The third heating element is arranged on the outer side wall of the second hot runner tube.

10. The injection mold according to claim 9, characterized in that: The flow channel inlet and / or the flow channel outlet are concave to form a second groove, and the end of the second hot runner pipe is sealed and inserted in the second groove.

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