Mixed material extrusion device

Abstract

The present invention provides a mixed material extrusion device, which relates to the field of extrusion devices. The scheme adopted is: including a support seat, and also including an extrusion assembly 1, the extrusion assembly 1 includes a twin-screw extrusion assembly and a drive assembly, the twin-screw extrusion assembly includes two meshing screws 1, the screw 1 can rotate in an extrusion chamber 1 of an extrusion tube 1, and the two screws 1 are connected to the drive assembly, and the drive assembly is arranged on the support seat; an extrusion assembly 2, the extrusion assembly 2 includes an extrusion tube 2, the feed end of the extrusion tube 2 is connected to the discharge end of the extrusion tube 1 through a coloring flange, and the coloring flange is provided with two injection pipes along its radial direction for inputting different pigments, and the inside of the extrusion tube 2 is provided with two extrusion chambers 2 in parallel along its axial direction, and the extrusion chambers 2 are connected to the corresponding injection pipes. The present invention can directly produce mixed materials, save the mixing process after production, and has fewer processes than the prior art, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to the field of extrusion devices, in particular to a mixed material extrusion device. Background Art

[0002] Extrusion puffing technology is to feed the pre-treated raw material mixture into the extrusion puffing machine, and through the pushing and shearing action of the screw, the material undergoes physical and chemical changes under high temperature and high pressure to form puffed food with a specific shape and taste. In the production process of extruded puffed food, some natural pigments are often added to increase the color, aroma and appearance of the food. The pigment is often added indirectly by injecting steam or a solution containing a pigment at a specific position of the extrusion puffing machine (such as the barrel jacket, nozzle, etc.) to mix the pigment with the raw material under high temperature and high pressure, thereby achieving color addition. This method is suitable for products that require precise control of the distribution and dosage of the pigment.

[0003] With the pursuit of the characteristics of extruded and expanded foods, puffed foods (combined materials) packaged in multiple colors are becoming more and more popular. In order to form foods packaged in multiple colors, in the prior art, multiple extrusion puffing machines, i.e., screw extruders, are required during production to produce puffed foods of different colors at the same time, or related parts of the screw extruders are replaced to produce puffed foods of different colors in succession, and then the foods of various colors are transported to related mixing equipment for mixing, and finally transported to related packaging equipment for packaging.

[0004] The above technical solution requires mixed packaging of puffed foods, which increases the number of steps compared to the production of single-color puffed foods, affects production efficiency, and increases manufacturing costs. Summary of the invention

[0005] In order to solve the technical problem of low production efficiency of combined materials in the above-mentioned prior art, the present invention provides a mixed material extrusion device, which can directly produce mixed materials and eliminate the mixing process after material production. Compared with the prior art, it reduces the number of processes and improves production efficiency.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a mixed material extrusion device, including a support seat, and also including an extrusion component 1, the extrusion component 1 includes a twin-screw extrusion component and a drive component, the twin-screw extrusion component includes two meshing screws 1, the screws 1 can rotate in an extrusion chamber 1 of an extrusion tube 1, the two screws 1 are connected to the drive component, and the drive component is arranged on the support seat; an extrusion component 2, the extrusion component 2 includes an extrusion tube 2, the feed end of the extrusion tube 2 is connected to the discharge end of the extrusion tube 1 through a colored flange, Two injection tubes are arranged on the coloring flange along its radial direction for inputting different pigments, two extrusion chambers are arranged inside the extrusion tube two in parallel along its axial direction, the extrusion chambers two are communicated with the corresponding injection tubes, two screws are arranged in the two extrusion chambers two respectively, the screws two are connected with the corresponding screw one, and the screw one can drive the corresponding screw two to rotate; a discharging die head assembly, the discharging die head assembly is connected with the discharging end of the extrusion tube two, the discharging die head assembly is provided with at least two mold assemblies, and different mold assemblies are respectively communicated with the corresponding extrusion chambers two.

[0007] The present invention is provided with an extrusion component 2, which can divide the extruded material of the extrusion component 1 into two cavities, and respectively perform coloring and extrusion, and respectively discharge the materials at the discharge die head component, thereby realizing the simultaneous production of multiple materials and discharging and mixing of the materials by one extruder, eliminating the process turnover after material production and the process of mixing different materials. Compared with the existing technology, the process is reduced and the production efficiency is improved.

[0008] Furthermore, the extrusion tube 1 includes at least two connected sub-tubes 1, the extrusion tube 2 includes one sub-tube 2 or at least two connected sub-tubes 2, the sub-tube 1 and the sub-tube 2 have the same structure, two separation sleeves are arranged in parallel in the mold cavity of the sub-tube 2, the screw 2 is rotatably arranged in the separation sleeve, the feed end of the separation sleeve is located in the coloring flange, and the liquid pipe is connected to the corresponding separation sleeve.

[0009] The present invention sets the sub-tube 2 of the extrusion tube 2 to have the same structure as the sub-tube 1 of the extrusion tube 1, and does not need to develop an extrusion tube with a new extrusion cavity structure. Only a separation sleeve needs to be manufactured, which is convenient for using the existing structure and reduces design and manufacturing costs.

[0010] Furthermore, the outer circumferential surfaces of the two separation sleeves are provided with positioning surfaces, and the two positioning surfaces are in contact with or abut against each other.

[0011] The present invention can prevent the separation sleeve from rotating by arranging the positioning surface, and limit the position of the separation sleeve in the second extrusion tube, which is beneficial to ensuring product quality.

[0012] Furthermore, a limiting flange is provided at the discharge end of the separation sleeve, and the limiting flange abuts against the discharge die head assembly.

[0013] The present invention can avoid axial movement of the separation sleeve by arranging the limiting flange and abutting against the discharge die head component, which is beneficial to ensuring product quality.

[0014] Furthermore, the inner wall of the feed end of the separation sleeve is in a bell-mouth structure.

[0015] The invention facilitates feeding from an extrusion component by arranging the feeding end of the separation sleeve into a bell-mouth shape.

[0016] Furthermore, the second screw rod is detachably connected to the corresponding first screw rod.

[0017] The present invention connects screw 2 to screw 1 in a detachable manner, and can replace corresponding screw 1 or screw 2 according to the characteristics of the material, thereby improving the use flexibility of the device.

[0018] Furthermore, both screw rod one and screw rod two are hollow structures, one set of screw rods is arranged outside spline shaft one and is connected to spline shaft one through a spline, one end of spline shaft one is connected to the driving assembly, the other end of spline shaft one is threadedly connected to spline shaft two, spline shaft two is arranged inside screw rod two and is connected to screw rod two through a spline, a threaded hole is provided on the end of spline shaft two near the spline shaft one, a limiting bolt is threaded in the threaded hole, and the head of the limiting bolt extends out of screw rod two and abuts against the discharge end of screw rod two.

[0019] The present invention ensures that the first screw and the second screw have a high coaxiality after being connected through the spline shaft 1 and the spline shaft 2, avoids the running jump of the second screw, ensures the product quality, and reduces the vibration, noise and failure rate of the device.

[0020] Furthermore, the spline shaft 2 is also connected to the screw rod 1 via a spline.

[0021] The present invention enhances the connection strength between the first screw and the second screw by means of a spline, thereby avoiding the low reliability of the two being connected simply by means of a thread.

[0022] Furthermore, along the discharging direction, the discharging die head assembly includes a method flange, a confluence seat and a mold seat that are connected in sequence. The method flange is detachably connected to the extrusion tube 2. The confluence seat and the mold seat are both hinged to the method flange. At least two diversion sections are sequentially arranged on the confluence seat. The screw 2 extends all the way into the diversion section. The mold seat is provided with the mold assembly. The material reaches the outside through the separation sleeve, the diversion section and the mold assembly.

[0023] Furthermore, the cavity structure of the method flange is the same as the cavity structure of the sub-tube 2, the separation sleeve extends into the cavity of the method flange, the limiting flange is fitted with the end face of the method flange, and a groove is provided on the end face of the confluence seat close to the method flange, and the groove accommodates the limiting flange.

[0024] It can be seen from the above technical solutions that the present invention has the following advantages:

[0025] The present invention provides a mixed material extrusion device, which can divide the extruded material of the extrusion component one into two cavities by setting an extrusion component two, and color and extrude them respectively, and discharge them respectively at the discharge die head component, so that multiple materials can be produced simultaneously by one extruder and the discharged materials are mixed, eliminating the process turnover after material production and the process of mixing different materials. Compared with the prior art, the process is reduced and the production efficiency is improved; by setting the sub-tube two of the extrusion tube two to have the same structure as the sub-tube one of the extrusion tube one, there is no need to develop an extrusion tube with a new extrusion cavity structure, and only a separation sleeve needs to be manufactured, which is convenient for borrowing the existing structure and reducing the design and manufacturing costs; by setting the positioning surface, the rotation of the separation sleeve can be avoided, and the separation sleeve in the extrusion tube two can be properly positioned. The position is limited, which is beneficial to ensuring product quality; by setting a limiting flange and abutting against the discharge die head assembly, the axial movement of the separation sleeve can be avoided, which is beneficial to ensuring product quality; by setting the feed end of the separation sleeve into a bell-mouth shape, it is convenient to feed from the extrusion assembly one; by detachably connecting the screw rod two with the screw rod one, the corresponding screw rod one or screw rod two can be replaced according to the characteristics of the material, thereby improving the flexibility of use of the device; by the spline shaft one and the spline shaft two, it is ensured that the screw rod one and the screw rod two have a high coaxiality after being connected, and the running jump of the screw rod two is avoided, thereby ensuring product quality and reducing the vibration, noise and failure rate of the device; by the spline, the connection strength between the screw rod one and the screw rod two is enhanced, thereby avoiding the low reliability of the two being simply connected by threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the assembly structure of the extrusion component 1, the extrusion component 2 and the discharge die head component in a specific embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of the assembly structure of the discharge die assembly, the second extrusion assembly and the first screw in a specific embodiment of the present invention.

[0029] Figure 3 It is a schematic diagram of the assembly structure of the discharge die head assembly, the separation sleeve, the second screw, the first screw and the sub-tube in a specific embodiment of the present invention.

[0030] Figure 4 It is a schematic diagram of the assembly structure of screw rod 2 and screw rod 1 in a specific embodiment of the present invention.

[0031] Figure 5 It is a schematic structural diagram of a separation sleeve in a specific implementation manner of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the spline shaft 2 in a specific implementation manner of the present invention.

[0033] In the figure, 1. discharge die head assembly; 101. square flange; 102. confluence seat; 103. die seat; 104. die assembly; 105. diversion section; 2. extrusion assembly 2; 201. extrusion tube 2; 202. injection tube; 203. coloring flange; 204. screw 2; 205. spline shaft 2; 2051. spline 1; 2052. spline 2; 206. limit bolt; 207. separator sleeve; 2071. limit flange; 2072. positioning surface; 3. extrusion assembly 1; 301. screw 1; 302. sub-tube 1; 303. spline shaft 1; 4. drive assembly. DETAILED DESCRIPTION

[0034] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0035] like Figures 1 to 4As shown, this specific embodiment provides a mixed material extrusion device, including a support seat, an extrusion assembly 1 3, an extrusion assembly 2 2 and a discharge die assembly 1; the extrusion assembly 1 3 includes a twin-screw extrusion assembly and a drive assembly 4, the twin-screw extrusion assembly includes two meshing screws 1 301, the screws 1 301 can rotate in an extrusion chamber 1 of an extrusion tube 1, the two screws 1 301 are connected to the drive assembly 4, and the drive assembly 4 is arranged on the support seat; the extrusion assembly 2 2 includes an extrusion tube 201, the feed end of the extrusion tube 201 is connected to the discharge end of the extrusion tube 1 through a coloring flange 203, and the coloring Two injection tubes 202 are arranged on the flange 203 along its radial direction for inputting different pigments. Two extrusion chambers 2 are arranged inside the extrusion tube 201 along its axial direction in parallel. The extrusion chambers 2 are connected with the corresponding injection tubes 202. Screws 204 are respectively arranged in the two extrusion chambers 2. The screws 204 are connected with the corresponding screws 1 301. The screws 1 301 can drive the corresponding screws 204 to rotate. The discharge die head assembly 1 is connected with the discharge end of the extrusion tube 201. The discharge die head assembly 1 is provided with at least two mold assemblies 104. Different mold assemblies 104 are respectively connected with the corresponding extrusion chambers 2.

[0036] This specific embodiment is provided with an extrusion component 2, which can divide the extruded material of the extrusion component 3 into two cavities, and respectively color and continue to extrude the corresponding materials, and discharge them separately at the discharge die head component 1, thereby realizing the simultaneous production of multiple materials by one extruder and mixing the materials during discharge, eliminating the process turnover after material production and the process of mixing different materials. Compared with the existing technology, it reduces the process, improves the production efficiency of the combined material, and reduces the production cost.

[0037] like Figures 1 to 3As shown, in order to reduce the manufacturing cost of the device and shorten the design cycle, in this specific embodiment, the extrusion tube 1 includes at least two connected sub-tubes 1 302, the extrusion tube 201 includes one sub-tube 2 or at least two connected sub-tubes 2, the sub-tube 1 302 and the sub-tube 2 have the same structure, two separation sleeves 207 are arranged in parallel in the cavity of the sub-tube 2, the separation sleeve 207 is rotatably provided with a screw 204, the feed end of the separation sleeve 207 is located in the coloring flange 203, and the liquid pipe is connected to the corresponding separation sleeve 207. In this specific embodiment, ten sub-tubes 1 302 are arranged, and the two ends of the sub-tube 1 302 are respectively provided with connection methods A cavity with an eight-shaped cross-section is arranged inside the sub-tube 1 302, and multiple cavities are connected to form an extrusion cavity 1. The extrusion tube 201 includes a sub-tube 2. The sub-tube 2 and the sub-tube 1 302 have exactly the same structure. The separation sleeve 207 separates the eight-shaped cavity of the sub-tube 2 into two extrusion cavities 2. The connecting flange of the sub-tube 2 is bolted to the connecting flange of the sub-tube 1 302 through the colored flange 203. After such arrangement, during manufacturing, the sub-tube 1 302 and the separation sleeve 207 can be directly used to manufacture the extrusion tube 201, and it has high interchangeability, and there is no need to manufacture corresponding more complicated parts separately, which greatly reduces the manufacturing and maintenance costs.

[0038] like Figure 3 and Figure 5 As shown, in order to prevent the separation sleeve 207 from rotating and moving axially under the force of the screw 204, thereby affecting the product production efficiency and production quality, in this specific embodiment, the outer circumferential surfaces of the two separation sleeves 207 are provided with positioning surfaces 2072, and the two positioning surfaces 2072 are in contact or abut against each other. A limiting flange 2071 is provided at the discharge end of the separation sleeve 207, and the limiting flange 2071 abuts against the discharge die head assembly 1; by providing the positioning surface 2072, the rotation of the separation sleeve 207 can be avoided, and by providing the limiting flange 2071 and abutting against the discharge die head assembly 1, the axial movement of the separation sleeve 207 can be avoided; as a preferred embodiment, the inner wall of the feed end of the separation sleeve 207 is a trumpet-mouth structure, with the wide end facing the extrusion assembly 1 3, so as to facilitate the extrusion assembly 2 2 to feed from the extrusion assembly 3.

[0039] like Figure 3 and Figure 4As shown, since different materials have different characteristics, in order to ensure the flexibility of use and good production quality of the device, in the present specific embodiment, the second screw 204 is detachably connected to the corresponding screw 1 301. After such arrangement, the screw 1 301 or the second screw 204 can be replaced according to the change of the material; preferably, the screw 1 301 and the second screw 204 are both hollow structures, the screw 1 301 is sleeved on the outside of the spline shaft 1 303 and is connected to the spline shaft 1 303 through a spline, one end of the spline shaft 1 303 is connected to the drive assembly 4, and the other end of the spline shaft 1 303 is threadedly connected with the second spline shaft 205, the second spline shaft 205 is arranged inside the second screw 204 and is connected to the second screw 204 through a spline, the second spline shaft 205 is also connected to the screw 1 301 through a spline, and the spline shaft 205 is connected to the second spline shaft 205. A threaded hole is provided at the end away from the spline 2052, and a limiting bolt 206 is screwed in the threaded hole. The head of the limiting bolt 206 extends out of the screw 204 and abuts against the discharge end of the screw 204. Specifically, along the discharge direction, the spline shaft 205 is sequentially provided with an external thread, a spline 1 2051, a spline 2052 and a threaded hole, and the outer diameter of the spline 1 2051 is larger than the outer diameter of the spline 2052; the spline shaft 1 303 and the spline shaft 205 ensure that the screw 1 301 and the screw 2 204 have a high coaxiality after being connected, avoid the operation jump of the screw 204, ensure the product quality, reduce the vibration, noise and failure rate of the device, and enhance the connection strength between the screw 1 301 and the screw 2 204 through the spline, avoid the low reliability of the two simply connected by threads.

[0040] like Figure 1 and Figure 3 As shown, in this specific embodiment, along the discharging direction, the discharging die head assembly 1 includes a method flange 101, a confluence seat 102 and a mold seat 103 connected in sequence, the method flange 101 is detachably connected to the extrusion tube 201, the confluence seat 102 and the mold seat 103 are both hinged to the method flange 101, and two hinges are provided on one side of the method flange 101 to facilitate opening, the confluence seat 102 and the mold seat 103, and at least two diversion sections 105 are provided on the confluence seat 102 in sequence. In this specific embodiment, two diversion sections 105 are provided, and the screw 204 extends all the way into the diversion section 105. The mold seat 103 is provided with a plurality of hinges. A mold assembly 104 is provided, and the material reaches the outside through the separation sleeve 207, the diversion section 105 and the mold assembly 104; preferably, the cavity structure of the method flange 101 is the same as the cavity structure of the sub-tube 2, the separation sleeve 207 extends into the cavity of the method flange 101, the limiting flange 2071 is fitted with the end face of the method flange 101, and a groove is provided on the end face of the confluence seat 102 close to the method flange 101, and the groove accommodates the limiting flange 2071; by providing the groove to accommodate the limiting flange 2071, on the one hand, the bottom of the groove limits the separation sleeve 207, and on the other hand, a gap is avoided between the confluence seat 102 and the flange.

[0041] The extrusion component 1 3 of this specific embodiment also includes a feeding mechanism and a heat exchange mechanism, and the extrusion component 2 2 also includes a heat exchange mechanism that is the same as the heat exchange mechanism of the extrusion component 1 3. The heat exchange mechanism and the feeding mechanism in this specific embodiment are respectively the same as the heat exchange structure and the feeding mechanism in the patent application announcement number CN 116019243 A, which are prior arts and will not be repeated herein.

[0042] The working process of this mixed material extrusion device is:

[0043] The raw materials are first conveyed into the extrusion tube one through the feeding mechanism, and the driving assembly 4 drives the twin-screw extrusion assembly to rotate while stirring and mixing the raw materials fed into the extrusion tube one, and continuously conveying them in the extrusion direction of the extrusion tube one; when the raw materials move to the feeding end of the separation sleeve 207, they enter different separation sleeves 207 respectively under the action of the second screw 204, and different pigments are injected into the injection pipe 202 to form two materials of different colors; the material moves to the confluence seat 102 under the action of the second screw 204, and is diverted under the action of the diversion section 105 until it moves to the corresponding mold assembly 104, and is pushed to the outside of the device after the molding action of the mold assembly 104, and when the discharge is cut off, materials of different colors are directly mixed.

[0044] From the above specific implementations, it can be seen that the present invention has the following beneficial effects:

[0045] 1. By setting the extrusion component 2, the extruded material of the extrusion component 3 can be divided into two cavities, and the coloring and extrusion are performed respectively, and the materials are discharged separately in the discharge die head component 1, so that multiple materials can be produced and mixed by one extruder at the same time, and the process turnover after material production and the process of mixing different materials are omitted. Compared with the existing technology, the process is reduced and the production efficiency is improved;

[0046] 2. By setting the sub-tube 2 of the extrusion tube 201 to have the same structure as the sub-tube 1 302 of the extrusion tube 1, there is no need to develop an extrusion tube with a new extrusion chamber structure, and only the separation sleeve 207 needs to be manufactured, which is convenient for using the existing structure and reducing the design and manufacturing costs;

[0047] 3. By providing the positioning surface 2072, the separation sleeve 207 can be prevented from rotating, and the position of the separation sleeve 207 in the extrusion tube 201 is limited, which is conducive to ensuring product quality;

[0048] 4. By providing the limiting flange 2071 and abutting against the discharge die assembly 1, the axial movement of the separation sleeve 207 can be avoided, which is conducive to ensuring product quality;

[0049] 5. By setting the feed end of the separation sleeve 207 into a bell-mouth shape, it is convenient to feed from the extrusion component 3;

[0050] 6. By detachably connecting the screw rod 204 and the screw rod 1 301 , the corresponding screw rod 1 301 or the screw rod 204 can be replaced according to the characteristics of the material, thereby improving the use flexibility of the device;

[0051] 7. The spline shaft 1 303 and the spline shaft 205 ensure that the screw 1 301 and the screw 2 204 have a high coaxiality after being connected, avoiding the running jump of the screw 204, ensuring the product quality, and reducing the vibration, noise and failure rate of the device;

[0052] 8. The spline is used to enhance the connection strength between screw 1 301 and screw 2 204, thereby avoiding the low reliability of the two being simply connected by threads.

[0053] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mixed material extrusion device, comprising a support seat, characterized in that: Also includes, An extrusion assembly (3), the extrusion assembly (3) comprising a twin-screw extrusion assembly and a drive assembly (4), the twin-screw extrusion assembly comprising two meshing screws (301), the screws (301) being capable of rotating in an extrusion chamber (301) of an extrusion tube (1), the two screws (301) being connected to the drive assembly (4), and the drive assembly (4) being arranged on the support seat; Extrusion assembly 2 (2), the extrusion assembly 2 (2) comprising an extrusion tube 2 (201), the extrusion tube 1 comprising at least two connected sub-tubes 1 (302), the extrusion tube 2 (201) comprising one sub-tube 2 or at least two connected sub-tubes 2, the sub-tube 1 (302) and the sub-tube 2 having the same structure, the feed end of the extrusion tube 2 (201) being connected to the discharge end of the extrusion tube 1 via a coloring flange (203), the coloring flange (203) being provided with two injection tubes (202) along its radial direction for inputting different pigments, the extrusion tube 2 (201) being provided with two extrusion chambers 2 in parallel along its axial direction , the extrusion chamber 2 is communicated with the corresponding injection pipe (202), the two extrusion chambers 2 are respectively provided with screw 2 (204), the screw 2 (204) is connected with the corresponding screw 1 (301), the screw 1 (301) can drive the corresponding screw 2 (204) to rotate, two separation sleeves (207) are arranged in parallel in the cavity of the sub-tube 2, the screw 2 (204) is rotatably arranged in the separation sleeve (207), the feed end of the separation sleeve (207) is located in the coloring flange (203), and the injection pipe (202) is communicated with the corresponding separation sleeve (207); a discharge die assembly (1), the discharge die assembly (1) being connected to the discharge end of the second extrusion tube (201), the discharge die assembly (1) being provided with two die assemblies (104), and different die assemblies (104) being respectively connected to corresponding second extrusion chambers; The outer circumferential surfaces of the two separation sleeves (207) are provided with positioning surfaces (2072), and the two positioning surfaces (2072) are in contact with or abut against each other; A limiting flange (2071) is provided at the discharge end of the separation sleeve (207), and the limiting flange (2071) abuts against the discharge die head assembly (1); Along the discharge direction, the discharge die head assembly (1) comprises a method flange (101), a confluence seat (102) and a die seat (103) which are connected to each other in sequence; the method flange (101) is detachably connected to the second extrusion tube (201); the confluence seat (102) and the die seat (103) are both hinged to the method flange (101); two diversion sections (105) are arranged in sequence on the confluence seat (102); the second screw (204) extends into the diversion section (105); the die seat (103) is provided with the die assembly (104); and the material reaches the outside through the separation sleeve (207), the diversion section (105) and the die assembly (104); The cavity structure of the method flange (101) is the same as the cavity structure of the sub-tube 2, the separation sleeve (207) extends into the cavity of the method flange (101), the limiting flange (2071) is in contact with the end surface of the method flange (101), and a groove is provided on the end surface of the confluence seat (102) close to the method flange (101), and the groove accommodates the limiting flange (2071).

2. The mixed material extrusion device according to claim 1, characterized in that: The inner wall of the feed end of the separation sleeve (207) is in a bell-mouth structure.

3. The mixed material extrusion device according to any one of claims 1 to 2, characterized in that: The second screw rod (204) is detachably connected to the corresponding first screw rod (301).

4. The mixed material extrusion device according to claim 3, characterized in that: The screw rod 1 (301) and the screw rod 2 (204) are both hollow structures. The screw rod 1 (301) is sleeved on the outside of the spline shaft 1 (303) and is connected to the spline shaft 1 (303) via a spline. One end of the spline shaft 1 (303) is connected to the driving assembly (4). The other end of the spline shaft 1 (303) is threadedly connected to the spline shaft 2 (205). The spline shaft 2 (205) is arranged inside the screw rod 2 (204) and is connected to the screw rod 2 (204) via a spline. A threaded hole is provided on the end of the spline shaft 2 (205) away from the spline shaft 1 (303). A limiting bolt (206) is threadedly connected in the threaded hole. The head of the limiting bolt (206) protrudes out of the screw rod 2 (204) and abuts against the discharge end of the screw rod 2 (204).

5. The mixed material extrusion device according to claim 4, characterized in that: The second spline shaft (205) is also connected to the first screw rod (301) via a spline.

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