Extruding machine head and composite extruding device

Abstract

The utility model provides an extruding machine head and a composite extruding device. Wherein the extruder head comprises a pre-die, a die plate and a shunting block, the pre-die is provided with a plurality of main runners, the die plate is provided with a cavity, the cavity is communicated with the main runners, the cavity is provided with an outlet for outputting a sizing material, the shunting block is provided with at least two sub-runners, the shunting block is arranged in the cavity, and the sub-runners are communicated with the main runners; and a sizing material conveyed from the main runner is extruded into a preset shape in the sub-runner. According to the utility model, the problem of high difficulty in adjusting and repairing the pre-opening type in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the field of rubber processing, in particular to an extruder head and a composite extrusion device. Background Art

[0002] Composite extrusion technology and equipment are widely used in the production of rubber semi-components such as tire treads, sidewalls, cushion rubber, and apex rubber. These rubber semi-components are rubbers of different formulations that are layered and superimposed in a predetermined shape. For multi-layer products of two or more materials, different rubber materials need to be extruded and bonded into specific shapes through composite devices. Taking the sidewall as an example, the focus is on the four-composite sidewall that requires four different materials to be superimposed and formed, and the four-material composite requires a four-composite extruder.

[0003] In the tire industry, the sidewalls are used in pairs on the tire molding machine. In order to improve efficiency and avoid flipping after extrusion, most of the existing semi-steel sidewalls are extruded in double strips at one time (except for the extra-wide sidewalls). That is, for the four-composite sidewalls formed by superimposing four different materials, a four-composite extruder is required to extrude the four materials separately and convey them to the composite head, and complete the extrusion and superposition of the product through a set of preforming components (die components). The preforming components for the four-composite sidewalls generally include a die frame plate, a pre-die, and a die plate.

[0004] For the four-composite sidewall, there is often a material with an irregular shape and size embedded inside, and this part usually changes in different specifications of the sidewall, which puts very high manufacturing requirements on the pre-mouth shape. In addition, the space there is very small, and it is too difficult to adjust and grind it again once the processing is completed. In addition, the complex structure limits the universality of the pre-mouth shape in different sidewall specifications, which inevitably results in the need to process multiple sets of pre-mouth shapes and corresponding sidewalls for use in pairs, which has high manufacturing costs and makes it difficult to manage the production of parts. Utility Model Content

[0005] The main purpose of the utility model is to provide an extruder head and a composite extruder device to solve the problem of great difficulty in adjusting the pre-mouth shape and repairing the mold in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an extruder head is provided, including a pre-die, a die plate, and a diverter block, the pre-die having a plurality of main channels, the die plate having a cavity, the cavity being connected to the main channels, the cavity having an outlet for outputting rubber material, the diverter block having at least two diverter channels, the diverter block being arranged in the cavity, the diverter channels being connected to the main channels, and the rubber material conveyed from the main channels is extruded into a predetermined shape in the diverter channels.

[0007] Furthermore, the path lengths of at least two branch channels are different.

[0008] Furthermore, at least two flow diversion channels are arranged vertically and spaced apart in the height direction of the flow diversion block.

[0009] Furthermore, the diverter block has a diverter outlet, all diverter channels are connected to the diverter outlet, and the diverter outlet is connected to the outlet in a butt connection.

[0010] Furthermore, the diverter channel includes a first diverter channel and a second diverter channel. The first diverter channel is arranged inside the diverter block. The diverter block has a recess at its edge. When the diverter block is located in the cavity, the inner wall of the mouth plate blocks the side of the recess and forms a second diverter channel.

[0011] Furthermore, the flow diverter also includes a third flow diverter and a fourth flow diverter. The edge of the flow diverter block is provided with a groove, the groove forms the third flow diverter and the fourth flow diverter, and the groove and the second flow diverter are respectively located on both sides of the flow diverter block.

[0012] Furthermore, there are multiple diverter blocks, and the shapes of the diverter channels on at least two diverter blocks are different.

[0013] Further, the die plate is an integral part; or the die plate includes an upper die plate and a lower die plate, and the upper die plate and the lower die plate are spliced ​​up and down to form a cavity.

[0014] Furthermore, the extruder head also includes a die frame plate, the pre-die and the die plate are both arranged in the die frame plate, and the pre-die and the die plate are arranged in sequence along the flow direction of the rubber material.

[0015] According to another aspect of the present invention, a composite extrusion device is provided, including an extruder and the above-mentioned extruder head, wherein the extruder is multiple and all are connected and cooperated with the main flow channel of the extruder head.

[0016] By applying the technical solution of the utility model, a diverter block is added, and the rubber is extruded through the diverter block. In this way, it is no longer necessary to set a structure for extrusion molding at the main flow channel in the pre-mouth mold. It is only necessary to set the main flow channel to a universal structure that can allow the rubber to pass through. At the same time, the setting of the diverter channel can realize the extrusion molding of a variety of different rubbers, so that a composite sidewall and a composite tread made of four or even more materials can be formed. On the one hand, the above-mentioned setting method enables the rubber to be compounded in the diverter block, thereby greatly relaxing the adaptation range of the pre-mouth mold, making the shape of the pre-mouth mold simple and not requiring modification, greatly reducing the processing cost, improving the versatility of the pre-mouth mold, and realizing the universality of the pre-mouth mold across specifications. On the other hand, the positioning is accurate and flexible by relying on the diverter block. Only the diverter block needs to be adjusted to accurately control the position of different rubbers, reducing the difficulty of modifying the traditional extruder head and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 Shows a front view of the extruder head of the utility model;

[0019] Figure 2 A rear view of the extruder head is shown;

[0020] Figure 3 A side view of the extruder head is shown;

[0021] Figure 4 A cross-sectional view of an extruder head is shown;

[0022] Figure 5 a cross-sectional view showing another position of the extruder head;

[0023] Figure 6 Shows a schematic diagram of the structure of the pre-mouth type;

[0024] Figure 7 An axonometric view of the pre-die and die plate is shown;

[0025] Figure 8 A front view of the pre-die and die plate is shown;

[0026] Fig. 9 The schematic diagram of the structure of the die plate and the diverter block is shown;

[0027] Fig.10 A front view of the shunt block is shown;

[0028] Fig.11 A rear view of the shunt block is shown;

[0029] Fig.12 shows a side view of the shunt block;

[0030] Fig.13 An axonometric view of the shunt block is shown;

[0031] Fig.14 An axonometric view of the shunt block from another angle is shown;

[0032] Fig.15 A schematic diagram of the structure of the sidewall is shown.

[0033] The above drawings include the following reference numerals:

[0034] 10. Pre-mouth shape; 11. Main flow channel; 20. Mouth plate; 21. Upper mouth plate; 22. Lower mouth plate; 23. Exit; 30. Diverter block; 31. Diverter channel; 311. First diverter channel; 312. Second diverter channel; 313. Third diverter channel; 314. Fourth diverter channel; 32. Diverter outlet; 40. Mouth frame plate; 50. Sidewall; S1. First rubber; S2. Second rubber; S3. Third rubber; S4. Fourth rubber. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0037] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0038] In order to solve the problem of great difficulty in adjusting the pre-mouth shape and repairing the mold in the prior art, the utility model provides an extruder head and a composite extrusion device.

[0039] like Figures 1 to 15 An extruder head shown includes a pre-die 10, a die plate 20, and a diverter block 30. The pre-die 10 has a plurality of main channels 11. The die plate 20 has a cavity, which is connected to the main channels 11. The cavity has an outlet 23 for outputting rubber. The diverter block 30 has at least two diverter channels 31. The diverter block 30 is arranged in the cavity, and the diverter channel 31 is connected to the main channel 11. The rubber delivered from the main channel 11 is extruded into a predetermined shape in the diverter channel 31.

[0040] In this embodiment, a diverter block 30 is added, and the rubber material is extruded through the diverter block 30. In this way, it is not necessary to set a structure for extrusion molding at the main channel 11 in the pre-mouth mold 10. It is only necessary to set the main channel 11 to a universal structure that can allow rubber material to pass through. At the same time, the setting of the diverter 31 can realize the extrusion molding of a variety of different rubber materials, so that a composite sidewall and a composite tread made of four or more materials can be formed. On the one hand, the above setting method enables the rubber material to be compounded in the diverter block 30, thereby greatly relaxing the adaptation range of the pre-mouth mold 10, making the shape of the pre-mouth mold 10 simple and not requiring modification, greatly reducing the processing cost, improving the versatility of the pre-mouth mold 10, and realizing the universality of the pre-mouth mold 10 across specifications. On the other hand, the positioning is accurate and flexible by relying on the diverter block 30. Only by adjusting the diverter block 30 can the position of different rubber materials be accurately controlled, reducing the difficulty of modifying the traditional extruder head and improving production efficiency.

[0041] It should be noted that the extruder head of this embodiment is described by taking the extrusion processing of the composite sidewall as an example. Of course, it can also be applied to the processing of other parts such as sidewalls, cushion rubber, and apex rubber. The front-to-back direction in this embodiment refers to the conveying direction of the rubber material, that is, the direction perpendicular to the cross section of the outlet 23, that is, Figure 4 The left and right directions in the diagram, where the front is the side close to the starting end of the conveying, i.e. Figure 4 The left side of the image, and the rear side is the side close to the extrusion end, that is, Figure 4 Similarly, the up and down direction refers to the direction perpendicular to the direction of rubber material conveying, that is, Figure 4 The up and down directions in .

[0042] like Figure 4 , Fig.12 As shown, in this embodiment, the path lengths of at least two branch channels 31 are different. In this way, when the rubber material flows into the branch channel 31 from the respective main channels 11 at the same time, due to the different path lengths of the branch channels 31, the rubber material in the branch channel 31 can be discharged in sequence. Specifically, the longer the path of the branch channel 31 is, the longer the rubber material is transported in the branch block 30, and the later it flows out of the branch block 30. Considering that the rubber material in the lower layer needs to be discharged first in general, and the rubber material in the upper layer needs to be discharged first, the rubber material in the lower layer needs to be discharged first. Output later, therefore, in this embodiment, at least two shunt channels 31 are arranged at intervals in the upper and lower directions along the height direction of the shunt block 30. In this way, when in use, the rubber material of the upper layer of the sidewall 50 is placed in the shunt channel 31 with a longer upper path length, and the rubber material of the lower layer of the sidewall 50 is placed in the shunt channel 31 with a shorter lower path length, thereby ensuring that the lower layer of rubber material forming the sidewall 50 flows out of the shunt block 30 first, and the upper layer of rubber material forming the sidewall 50 flows out of the shunt block 30 later, thereby facilitating the superposition molding of rubber materials at different upper and lower positions of the sidewall 50.

[0043] It should be noted that the specific arrangement of the branch channels 31 depends on the specific form of the rubber material to be processed. For rubber material that is not layered laterally, two or more horizontal branch channels 31 can be set, and the path lengths of these branch channels 31 can be the same to ensure simultaneous extrusion molding. For rubber material with upper and lower layers, it is necessary to adopt the above-mentioned branch channels 31 with different path lengths to achieve separate extrusion output from the upper and lower parts.

[0044] like Figure 5 , Fig.10 , Fig.14 As shown, in this embodiment, the diverter block 30 has a diverter outlet 32, all the diverter channels 31 are connected to the diverter outlet 32, and the diverter outlet 32 ​​is connected to the outlet 23. Specifically, the diverter outlet 32 ​​is located at the end of the diverter channel 31, that is, the side of the diverter block 30 away from the pre-mouth mold 10, and different diverter channels 31 are gathered at the diverter outlet 32, so that different rubber materials are superimposed and formed at the diverter outlet 32, and the shape of the diverter outlet 32 ​​should be able to match the cross-sectional shape of the sidewall 50.

[0045] like Fig.11 , Fig.12 , Fig.13As shown, in this embodiment, the diverter channel 31 includes a first diverter channel 311 and a second diverter channel 312. The first diverter channel 311 is arranged inside the diverter block 30. The diverter block 30 has a recess at its edge. When the diverter block 30 is located in the cavity, the inner wall of the mouth plate 20 blocks the side of the recess and forms a second diverter channel 312. Specifically, the first diverter channel 311 and the second diverter channel 312 both extend from a first side of the diverter block 30 close to the pre-mouth mold 10 to a second side of the diverter block 30 away from the pre-mouth mold 10, and along the direction from the first side to the second side, a first diverter channel 311 inclined from top to bottom is formed inside the diverter block 30. Unlike the first diverter channel 311, the second diverter channel 312 does not run through the diverter block 30, but is formed by setting a recess at the edge of the diverter block 30 close to the mouth plate 20, i.e., the upper and right edges of the diverter block 30, thereby forming an inverted L-shaped recess at the edge of the diverter block 30, and the inverted L-shaped recess and the inner wall of the mouth plate 20 together form a second diverter channel 312, thereby forming a second diverter channel 312. In this way, the second branch channel 312 is arranged above the first branch channel 311, and the length of the rubber flowing through the second branch channel 312 is greater than the length of the rubber flowing through the first branch channel 311, so that when different rubbers flow into the branch channel 31 from the main channel 11 at the same time, the rubber in the first branch channel 311 and the rubber in the second branch channel 312 flow out one after the other at the branch outlet 32, that is, the rubber in the first branch channel 311 at the bottom flows out first, and the rubber in the second branch channel 312 at the top flows out later, thereby realizing the composite superposition molding of different rubbers of the sidewall 50. Of course, the first diverter channel 311 and the second diverter channel 312 are not limited to the shape and number of the present embodiment. Different shapes and numbers of diverter channels 31 can be customized according to different requirements of different sidewalls 50. For example, the first diverter channel 311 can also be arranged in the diverter block 30 in an L-shape or other form to meet the different position arrangements of different rubber materials. The first diverter channel 311 or the second diverter channel 312 can also be set to multiple to meet the composite molding of multiple rubber materials.

[0046] like Fig. 9 , Fig.13As shown, in this embodiment, the runner 31 also includes a third runner 313 and a fourth runner 314. The edge of the runner block 30 has a groove, and the groove forms the third runner 313 and the fourth runner 314, and the groove and the second runner 312 are respectively located on both sides of the runner block 30. Specifically, the third runner 313 and the fourth runner 314 are located on the lower side of the runner block 30, and their main function is to extrude and form the main body of the bottom of the sidewall, so they are arranged on the lower side of the runner block 30. By setting two grooves at the edge below the runner block 30, the grooves run through the front and rear directions of the runner block 30 and cooperate with the die plate 20 below the runner block 30, so as to form the third runner 313 and the fourth runner 314. Of course, different numbers of grooves can also be set to form different numbers of runners 31 to match different rubber compositions of different sidewalls 50.

[0047] It should be noted that if Fig.15 As shown, this embodiment takes four composite sidewalls that require four different rubber materials to be composited as an example for explanation. Correspondingly, Figure 6 The pre-mouth mold 10 shown has four main flow channels 11, and the diverter block 30 has four diverter channels 31, wherein the third diverter channel 313 and the fourth diverter channel 314 are located at the lower left, and the two are arranged horizontally, and the first diverter channel 311 and the second diverter channel 312 are arranged above the middle position of the two, and the second diverter channel 312 is located above the first diverter channel 311. In this way, when in use, the third rubber S3 is extruded through the first diverter channel 311, the fourth rubber S4 is extruded through the second diverter channel 312, and the first rubber S1 and the second rubber S2 are extruded through the third diverter channel 313 and the fourth diverter channel 314, so that the four rubber materials are superimposed and formed into the sidewall.

[0048] Of course, the main flow channels 11 and the branch flow channels 31 can also be set to other numbers according to different requirements of different sidewalls 50. For example, when the sidewall 50 only needs to be composited with two rubber materials, only two main flow channels 11 and two corresponding branch flow channels 31 are needed.

[0049] In this embodiment, there are multiple shunt blocks 30, and the shapes of the shunt channels 31 on at least two shunt blocks 30 are different. Specifically, since the shunt block 30 has a specific shunt channel 31 and a shunt outlet 32 ​​that match a specific sidewall 50, the shunt block 30 can only be applied to the extrusion processing of one sidewall. Therefore, in this embodiment, multiple shunt blocks 30 are processed to match different sidewalls 50, so that when producing different sidewalls 50, only different shunt blocks 30 need to be switched, which can reduce processing costs while improving production efficiency, and realize low-cost rapid switching of different specifications.

[0050] like Figure 4 , Figure 7 , Figure 8 As shown, in this embodiment, the die plate 20 includes an upper die plate 21 and a lower die plate 22, and the upper die plate 21 and the lower die plate 22 are spliced ​​up and down to form a cavity. Specifically, the cavity is located on the side of the upper die plate 21 and the lower die plate 22 close to the pre-die 10, so that when the diverter block 30 is set in the cavity, the front end of the diverter channel 31 of the diverter block 30 is connected to the main channel 11, and the rear end is connected to the outlet 23. In this embodiment, the upper die plate 21 and the lower die plate 22 are both set to a plate with a certain thickness, and a groove is set along the thickness direction on the side of the upper die plate 21 close to the lower die plate 22, so that a cavity is formed between the upper die plate 21 and the lower die plate 22, which penetrates the die plate 20 along the thickness direction. The thickness direction mentioned here is also the front-back direction. Of course, in addition to only providing grooves on the upper die plate 21 to form a cavity, grooves may also be provided on the lower die plate 22, or grooves may be provided on both the upper die plate 21 and the lower die plate 22 to form a cavity. Alternatively, the upper die plate 21 and the lower die plate 22 may not be provided, but the die plate 20 may be formed in an integrally formed structure so that the die plate 20 forms an integral part and the cavity is formed in one piece during processing.

[0051] The cavity of this embodiment is divided into two parts, namely a front cavity and a rear cavity. The sizes of the two parts are different, and the front cavity is closer to the pre-mouth shape 10 than the rear cavity, and the size of the front cavity is larger than that of the rear cavity. The diverter block 30 is accommodated in the front cavity, so that they cooperate with each other to achieve extrusion molding, and the shape of the rear cavity is adapted to the shape of the cross-section of the tire side 50, so as to ensure the extrusion effect.

[0052] like Figures 1 to 5 As shown, in this embodiment, the extruder head also includes a die frame plate 40, and the pre-die 10 and the die plate 20 are both arranged in the die frame plate 40, and the pre-die 10 and the die plate 20 are arranged in sequence along the flow direction of the rubber material. The die frame plate 40 has a structure that cooperates with the structures of the pre-die 10 and the die plate 20, so that the installation of the pre-die 10 and the die plate 20 is stable and reliable. Specifically, the front end of the die frame plate 40 is conical, and the inclined surface of the cone cooperates with the inclined surface of the peripheral side of the pre-die 10 to achieve the installation connection of the pre-die 10, and the inclined surface of the cone cooperates with the pre-die 10 to form a part of the main flow channel 11. The rear end of the die frame plate 40 is provided with a mounting groove, which is located at the small diameter end of the cone and is connected to the small diameter end, and the die plate 20 can be installed in the mounting groove. A heating hole can be provided on the mouth frame plate 40 in a direction perpendicular to the main channel 11 , and the heating hole can be used to install a heating pipe or pass hot water. A temperature sensor hole can also be provided near the heating hole.

[0053] The process of extruding a four-composite sidewall by the extruder head is as follows: the four rubber materials flow from their respective main channels 11 according to a predetermined distribution route, and the four rubber materials enter the diverter block 30. The first diverter channel 311 and the second diverter channel 312 separate the third rubber S3 and the fourth rubber S4 located in the upper layer of the sidewall 50 and having an upper and lower position relationship, so as to realize a front-to-back transportation. The third diverter channel 313 and the fourth diverter channel 314 transport the first rubber S1 and the second rubber S2 located in the lower layer of the sidewall 50 to the outlet, and finally the four rubber materials are extruded through the die plate 20. For the two-composite sidewall composed of two rubber materials, the first rubber S1 and the second rubber S2, the first diverter channel 311 and the second diverter channel 312 can be eliminated. The extruder head in this embodiment can extrude two sidewalls 50 on the left and right sides at the same time, such as Fig. 9 As shown, a four-composite sidewall is extruded on one side, and a two-composite sidewall is extruded on the other side. In general, the extruder head of this embodiment can realize the extrusion processing of the following four types of composite products: 1. Single rubber material, generally one of the third runner 313 and the fourth runner 314 at the bottom of the pre-mouth mold 10 is selected for rubber extrusion; 2. Two-composite sidewall, generally the third runner 313 and the fourth runner 314 at the bottom of the pre-mouth mold 10 are both supplied for rubber extrusion; 3. Three-composite sidewall, in addition to the third runner 313 and the fourth runner 314, the first runner 311 above is also supplied for rubber extrusion, that is, the second runner 312 does not work, there is no fourth rubber S4 at the top, and the third rubber S3 is exposed; 4. Four-composite sidewall, the first runner 311, the second runner 312, the third runner 313 and the fourth runner 314 are all supplied for rubber extrusion. Of course, the two sides of the extruder head can also be set to the same structure so that the two extruded sidewalls 50 are the same, or the extruder head can be set to a single extrusion port structure, and the actual feeding and extrusion conditions can also be adjusted accordingly as needed.

[0054] This embodiment also provides a composite extrusion device, including an extruder and the above-mentioned extruder head. There are multiple extruders and they are all connected and coordinated with the main channel 11 of the extruder head, so that the rubber material transported in the extruder can be transported to the extruder head, so that the composite extrusion device can produce a sidewall 50 composed of multiple rubber materials.

[0055] It should be noted that, the multiple in the above embodiments refers to at least two.

[0056] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0057] 1. Solve the problem of difficulty in adjusting the pre-mouth shape and repairing the mold in the prior art;

[0058] 2. Greatly expand the adaptability range of the pre-mouth shape and significantly reduce processing costs;

[0059] 3. Reduce the difficulty of modifying the traditional extruder head and improve production efficiency.

[0060] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0063] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An extruder head, characterized in that: include: A pre-mouth mold (10), wherein the pre-mouth mold (10) has a plurality of main flow channels (11); A die plate (20), the die plate (20) having a cavity, the cavity being in communication with the main channel (11), and the cavity having an outlet (23) for outputting the rubber material; A diverter block (30), the diverter block (30) having at least two diverter channels (31), the diverter block (30) being arranged in the cavity, the diverter channels (31) being connected to the main channel (11), and the rubber material transported by the main channel (11) being extruded into a predetermined shape in the diverter channels (31).

2. The extruder head according to claim 1, characterized in that: The path lengths of at least two of the branch channels (31) are different.

3. The extruder head according to claim 1, characterized in that: At least two of the flow diversion channels (31) are arranged vertically and spaced apart in the height direction of the flow diversion block (30).

4. The extruder head according to claim 1, characterized in that: The diverter block (30) has a diverter outlet (32), all the diverter channels (31) are in communication with the diverter outlet (32), and the diverter outlet (32) is butt-connected to the outlet (23).

5. The extruder head according to claim 1, characterized in that: The branch channel (31) comprises: A first flow diversion channel (311), wherein the first flow diversion channel (311) is arranged inside the flow diversion block (30); The second flow diversion channel (312) has a concave portion at the edge of the flow diversion block (30). When the flow diversion block (30) is located in the cavity, the inner wall of the die plate (20) blocks the side of the concave portion and forms the second flow diversion channel (312).

6. The extruder head according to claim 5, characterized in that The flow diversion channel (31) further comprises a third flow diversion channel (313) and a fourth flow diversion channel (314); a groove is provided at the edge of the flow diversion block (30); the groove forms the third flow diversion channel (313) and the fourth flow diversion channel (314); and the groove and the second flow diversion channel (312) are respectively located on two sides of the flow diversion block (30).

7. The extruder head according to claim 1, characterized in that: There are a plurality of diverter blocks (30), and the diverter channels (31) on at least two of the diverter blocks (30) have different shapes.

8. The extruder head according to any one of claims 1 to 7, characterized in that The die plate (20) is an integral part; or The die plate (20) comprises an upper die plate (21) and a lower die plate (22), and the upper die plate (21) and the lower die plate (22) are spliced ​​up and down to form the cavity.

9. The extruder head according to any one of claims 1 to 7, characterized in that The extruder head further comprises a die frame plate (40), the pre-die (10) and the die plate (20) are both arranged in the die frame plate (40), and The pre-die (10) and the die plate (20) are arranged in sequence along the flow direction of the rubber material.

10. A composite extrusion device, characterized in that: It comprises an extruder and an extruder head as claimed in any one of claims 1 to 9, wherein the extruders are multiple and all are connected and cooperated with the main flow channel (11) of the extruder head.

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