Extruder head and extruder

Abstract

The utility model provides an extruder head and extruder. Among them, the extruder head includes: at least three mould bodies, the mould body is arranged and set successively from top to bottom between the mould bodies, and the extrusive flow channel is formed between the two mould bodies, the door locking subassembly is set at the side of mould body, the door locking subassembly is movably arranged relative to the mould body, and can hold the uppermost mould body and the lowermost mould body, and provides the clamping force of each other for the uppermost mould body and the lowermost mould body to lock all mould bodies, locking assembly, locking assembly is provided between the two mould bodies, and at least a part of locking assembly can be inserted into the two mould bodies simultaneously, and the relative rotation between the two mould bodies is hindered. The utility model solves the problem of time -consuming and labor -intensive of the extruder head of prior art when replacing material.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, and more specifically, to an extruder head and an extruder. Background Technology

[0002] Compound extruders are widely used in the production of rubber semi-finished parts such as tire treads, sidewalls, gaskets, and triangular rubber. Compound extruders typically have multiple dies forming flow channels for extruding rubber. A locking gate usually secures the dies together. When changing the extruded material, the locking gate is typically unlocked, allowing the entire die to be unlocked. Then, the flow channel for the material to be replaced is operated, and the die is locked again after the replacement is complete. This method is a typical example of a complete locking system. Once the locking gate is released, all dies are loosened, creating gaps between them. Due to the properties of rubber, it's impossible to guarantee a second locking gate without material leakage before production can continue. The remaining rubber inside the die head must be thoroughly cleaned before the locking gate can be locked again. This makes the entire material change process time-consuming and labor-intensive, affecting processing efficiency. Furthermore, incomplete cleaning can affect the reliability of the locking mechanism. Utility Model Content

[0003] The main purpose of this invention is to provide an extruder head and an extruder to solve the problem of time-consuming and labor-intensive material replacement in the extruder head in the prior art.

[0004] To achieve the above objectives, according to one aspect of the present invention, an extruder head is provided, comprising: at least three die bodies arranged vertically between each other, with an extrusion channel formed between adjacent die bodies; a locking assembly disposed on the side of the die body, the locking assembly being movably disposed relative to the die body and capable of clamping the uppermost die body and the lowermost die body, and providing a clamping force to the uppermost die body and the lowermost die body to lock all die bodies; and a locking assembly disposed between adjacent die bodies, at least a portion of the locking assembly being capable of simultaneously extending into the adjacent two die bodies and preventing relative rotation between the adjacent two die bodies.

[0005] Furthermore, the locking assembly includes: a locking drive; a locking block, the locking block being drivenly connected to the locking drive, and recesses being provided on the surfaces of two adjacent molds facing each other. The locking drive drives the locking block to extend into or retract from the recesses of the two molds to lock or unlock the two adjacent molds.

[0006] Furthermore, in any two adjacent recesses, at least one recess has an inclined side surface, and the locking block has a locking ramp that matches the inclined surface. Along the direction in which the locking block extends into the recess, both the locking ramp and the inclined surface are inclined toward the direction close to the central axis of the locking block.

[0007] Furthermore, the angle formed between the locking ramp and the inclined plane and the horizontal plane is 2.5 degrees to 30 degrees.

[0008] Furthermore, the locking drive is located on the side of the locking assembly away from the mold body. The locking assembly has a clearance hole, and the drive shaft of the locking drive passes through the clearance hole and is driven to connect with the locking block inside the locking assembly.

[0009] Furthermore, there are multiple locking components, and a locking component is provided between any two adjacent mold bodies.

[0010] Furthermore, the locking assembly includes a locking door having a first section, a second section, and a third section that are sequentially bent and connected, with the first and third sections located on the side of the second section facing the mold body. A locking area for locking the mold body is formed between the first, second, and third sections. The first section is limited to the upper surface of the uppermost mold body, and the third section is limited to the lower surface of the lowermost mold body. The lower surface of the first section, the upper surface of the uppermost mold body, the upper surface of the third section, and the lower surface of the lowermost mold body are all inclined surfaces.

[0011] Furthermore, the extruder head also includes: a runner plate disposed at the outlet of the extrusion runner; and a runner locking assembly disposed between the die body and the runner plate, at least a portion of which can extend into the runner plate and lock the runner plate.

[0012] Furthermore, the runner plate has a groove, which can be a square groove, a conical groove, or a wedge-shaped groove. The runner locking assembly includes a drive part and a locking head. The drive part is connected to the mold body, and the locking head is driven to the drive part and extends into or out of the groove under the drive of the drive part.

[0013] According to another aspect of the present invention, an extruder is provided, including the extruder head described above.

[0014] By applying the technical solution of this utility model, the locking assembly and the locking component work together. The locking assembly is used to lock the entire mold body, while the locking component is used to lock individual mold bodies. Specifically, when the extruder head is working normally, the locking assembly clamps the uppermost and lowermost mold bodies, thus locking the upper and lower mold bodies together for normal extrusion. When the rubber compound needs to be changed, the locking assembly unlocks the mold body. At this time, the locking component corresponding to the mold body that does not need to be opened does not need to be activated. The locking component locks the mold body that does not need to be opened together, so that the mold body remains locked together when the locking assembly is unlocked, preventing leakage due to rubber. Then, the mold body that needs to be opened can be flipped open to replace the rubber compound in the flow channel. After the replacement is completed, the locking assembly locks the entire mold body together again, the locking component resets and unlocks, and the extruder head can then perform extrusion normally. The above-mentioned setup, through the locking component, allows molds that do not require movement during material replacement to remain in their original state and are not affected by the unlocking of the locking component, while molds that need to be opened can be opened normally for replacement. This achieves zoned locking, making the entire replacement process convenient and quick, reducing a large number of unnecessary cleaning operations, lowering manual labor intensity, and improving the efficiency of replacement and processing. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 The front view of the extruder head of this utility model is shown;

[0017] Figure 2 It shows Figure 1 The left view;

[0018] Figure 3 A cross-sectional view is shown when the locking block retracts from the recess;

[0019] Figure 4 It shows Figure 3 Enlarged view of point P in the middle;

[0020] Figure 5 A cross-sectional view is shown when the locking block extends into the recess;

[0021] Figure 6 It shows Figure 2 Cross-sectional view of the central locking block;

[0022] Figure 7 A schematic diagram of the structure showing the fit between the mold body and the runner plate is shown;

[0023] Figure 8 This diagram shows the structure of the flow channel locking assembly and the flow channel plate when the locking head is conical.

[0024] Figure 9 A schematic diagram of the flow channel locking assembly and the flow channel plate is shown when the locking head is wedge-shaped.

[0025] The above figures include the following reference numerals:

[0026] 10. Mold body; 11. Recess; 12. Inclined surface; 13. Upper mold body; 14. Upper middle mold body; 15. Middle mold body; 16. Lower middle mold body; 17. Lower mold body; 20. Locking door assembly; 21. Locking door; 30. Locking assembly; 31. Locking drive component; 32. Locking block; 33. Locking inclined surface; 40. Flow channel plate; 41. Groove; 42. Locking plate; 50. Flow channel locking assembly; 51. Drive unit; 52. Locking head. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] To address the time-consuming and labor-intensive problem of changing materials in extruder heads in existing technologies, this invention provides an extruder head and an extruder. The extruder has the following extruder head.

[0031] like Figures 1 to 6An extruder head is shown, comprising at least three die bodies 10, a locking assembly 20, and a locking assembly 30. The die bodies 10 are arranged vertically, and an extrusion channel is formed between adjacent die bodies 10. The locking assembly 20 is disposed on the side of the die body 10 and is movably disposed relative to the die body 10. It is capable of clamping the uppermost die body 10 and the lowermost die body 10, and provides a clamping force to the uppermost die body 10 and the lowermost die body 10 to lock all die bodies 10. A locking assembly 30 is disposed between adjacent die bodies 10, and at least a portion of the locking assembly 30 can simultaneously extend into the adjacent die bodies 10 and prevent relative rotation between the adjacent die bodies 10.

[0032] In this embodiment, the locking assembly 20 and the locking assembly 30 cooperate with each other. The locking assembly 20 is used to lock the entire mold body 10, while the locking assembly 30 is used to lock the individual mold body 10. Specifically, when the extruder head is working normally, the locking assembly 20 clamps the uppermost and lowermost mold bodies 10, thereby locking the vertically arranged mold bodies 10 together and allowing normal extrusion to proceed. When it is necessary to change the rubber compound, the locking assembly 20 unlocks the mold body 10. At this time, it is not necessary to flip it over. When the opening mold body 10 is activated, the locking component 30 locks the mold body 10 that does not need to be opened together. This ensures that when the locking component 20 is unlocked, this part of the mold body 10 remains locked together, preventing leakage due to rubber interference. Then, the mold body 10 that needs to be opened can be flipped open to replace the rubber material in the flow channel. After replacement, the locking component 20 locks the mold body 10 together again, and the locking component 30 resets and unlocks, allowing the extruder head to resume normal extrusion. This setup, through the locking component 30, allows the mold body 10 that does not need to be moved during rubber material replacement to remain in its original state, unaffected by the unlocking of the locking component 20. Meanwhile, the mold body 10 that needs to be opened can be opened normally for replacement. This achieves zoned locking, making the entire replacement process convenient and quick, reducing unnecessary cleaning operations, lowering labor intensity, and improving replacement and processing efficiency.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, both the locking assembly 20 and the locking assembly 30 are located on the side of the mold body 10. This ensures that the locking assembly 20 and the locking assembly 30 do not occupy the space at the front and rear ends of the mold body 10, thus allowing for convenient inspection and maintenance of the extruder head as a whole. It should be noted that the horizontal perimeter of the mold body 10, excluding the top and bottom, consists of the front end, rear end, and left and right sides. The front end is where the outlet of the extrusion channel is located, and the channel plate 40 is located at the front end. The rear end is where the inlet of the extrusion channel is located, and the extrusion drive part of the extruder is located at the rear end. The left and right sides are the two sides adjacent to the front and rear ends. Figure 1 and Figure 2 As shown, the front and back ends are Figure 2 The left and right ends, and the left and right sides are Figure 1 The left and right sides.

[0034] like Figures 3 to 5 As shown, in this embodiment, the locking assembly 30 includes a locking drive 31 and a locking block 32. The locking drive 31 can be a cylinder, hydraulic cylinder, motor, or other components. In this embodiment, a hydraulic cylinder is used, which is connected to the frame of the extruder. The locking block 32 is driven by the output shaft of the locking drive 31. The locking drive 31 can drive the locking block 32 to move linearly. Correspondingly, recesses 11 are provided on the surfaces of two adjacent mold bodies 10 that face each other. The recesses 11 of the two mold bodies 10 can be mated to form a large recess. The locking block 32 then mates with this large recess. The two are basically the same in shape and size. The recesses 11 have openings on the side of the mold body 10. The locking block 32 can be inserted into or removed from the recesses 11 of the two mold bodies 10 under the drive of the locking drive 31, thereby locking or unlocking the two adjacent mold bodies 10.

[0035] Of course, the specific structural form of the locking component 30 is not limited to the setting method described above in this embodiment. It can also be adjusted as needed. For example, a smaller locking component 20 can be used.

[0036] In this embodiment, at least one of the two adjacent recesses 11 has an inclined surface 12 on its side. The locking block 32 has a locking ramp 33 that cooperates with the inclined surface 12. The locking ramp 33 and the inclined surface 12 are approximately parallel to each other. Along the direction in which the locking block 32 extends into the recess 11, both the locking ramp 33 and the inclined surface 12 are inclined towards the direction close to the central axis of the locking block 32. Thus, the locking block 32 in this embodiment is formed in the form of a wedge, and the recess 11 is formed in the form of a wedge groove. The locking ramp 33 makes the locking block 32 appear as a large end and a small end, that is, when the locking block 32 is withdrawn from the recess 11, the area of ​​the side of the locking block 32 facing the recess 11 is smaller than the area of ​​the side away from the recess 11. When it is necessary to lock the mold body 10, the smaller end of the locking block 32 first enters the recess 11. As the locking block 32 extends in, the locking ramp 33 gradually approaches the inclined surface 12 until the locking block 32 is fully inserted and the locking ramp 33 and the inclined surface 12 are basically in contact. At this time, the locking ramp 33 exerts a force perpendicular to the inclined surface 12 on the inclined surface 12. This force forms a certain angle with both the horizontal and vertical planes, thereby restricting the opening action of the mold body 10 and ensuring that the two mold bodies 10 are tightly attached without loosening, thus achieving a locking effect.

[0037] Preferably, the angle between the locking inclined surface 33 and the inclined surface 12 and the horizontal plane is 2.5 degrees to 30 degrees, thereby ensuring good force and locking effect.

[0038] In this embodiment, the locking drive 31 is located on the side of the lock door assembly 20 away from the mold body 10, that is, the locking drive 31 is disposed on the outer side of the lock door assembly 20, while the locking block 32 is disposed on the inner side of the lock door assembly 20. Correspondingly, the lock door assembly 20 has a clearance hole that penetrates through the inner and outer sides of the lock door assembly 20, so that the drive shaft of the locking drive 31 can pass through the clearance hole and extend into the inner side of the lock door assembly 20 to drive the connection between it and the locking block 32.

[0039] Due to the above-mentioned arrangement of the locking drive 31 and the locking assembly 20, in this embodiment, the distance between the cylinder surface of the locking drive 31 and the side of the mold 10 is greater than the lateral movement distance of the locking assembly 20, so that the locking assembly 20 can completely exit the mold 10 when unlocking the mold 10, ensuring the unlocking effect and avoiding interference with the locking drive 31.

[0040] In this embodiment, multiple locking components 30 are provided, and a locking component 30 is provided between any two adjacent mold bodies 10, so that any two mold bodies 10 can be locked together by the corresponding locking component 30.

[0041] like Figure 6As shown, this embodiment takes five mold bodies 10 as an example. For ease of understanding, the five mold bodies 10 are respectively called upper mold body 13, upper-middle mold body 14, middle mold body 15, lower-middle mold body 16 and lower mold body 17 according to their positions from top to bottom, thus forming four extrusion channels. Among them, the middle mold body 15 is fixedly connected to the frame of the extruder. The upper mold body 13, upper-middle mold body 14, lower-middle mold body 16 and lower mold body 17 are all mold bodies 10 that can be flipped open. Since there are mold bodies 10 above the upper-middle mold body 14 and below the lower-middle mold body 16, when the upper-middle mold body 14 and the lower-middle mold body 16 need to be flipped open, the upper mold body 13 above it or the lower mold body 17 below it needs to be flipped open as well. Correspondingly, eight locking components 30 are provided, with four symmetrically arranged on each side of the mold body 10. Taking one side as an example, one locking component 30 is provided between the upper mold body 13 and the upper-middle mold body 14, between the upper-middle mold body 14 and the middle mold body 15, between the middle mold body 15 and the lower-middle mold body 16, and between the lower-middle mold body 16 and the lower mold body 17. The locking components 30 on both sides are locked and unlocked synchronously. Based on the above structural form, two examples of changing the rubber material are given below:

[0042] When it is necessary to replace the rubber material in the extrusion channels between the upper mold body 13 and the middle upper mold body 14, and between the middle upper mold body 14 and the middle mold body 15, the locking components 30 between the upper mold body 13 and the middle upper mold body 14, and between the middle upper mold body 14 and the middle mold body 15, do not operate. However, the locking components 30 between the middle mold body 15 and the middle lower mold body 16, and between the middle lower mold body 16 and the lower mold body 17, operate. The locking drive 31 drives the locking block 32 to extend into the recess 11, so that the middle mold body 15, the middle lower mold body 16, and the lower mold body 17 are locked together. Then the locking door component 20 is unlocked, and the upper mold body 13 and the middle upper mold body 14 can be flipped open to replace the rubber material. After the rubber material is replaced, the locking assembly 20 is relocked, the locking assembly 30 between the middle mold body 15 and the middle and lower mold body 16, and between the middle and lower mold body 16 and the lower mold body 17 is reset, and the locking block 32 can be removed from the recess 11.

[0043] When only the material in the extrusion channel between the upper mold body 13 and the middle upper mold body 14 needs to be replaced, the locking assembly 30 between the upper mold body 13 and the middle upper mold body 14 does not operate, while the locking assemblies 30 between the middle upper mold body 14 and the middle mold body 15, between the middle mold body 15 and the middle lower mold body 16, and between the middle lower mold body 16 and the lower mold body 17 operate. The locking drive 31 drives the locking block 32 to extend into the recess 11, so that the middle upper mold body 14, the middle mold body 15, the middle lower mold body 16 and the lower mold body 17 are locked together. Then the locking assembly 20 is unlocked, and the upper mold body 13 can be flipped open to replace the material. After the rubber material is replaced, the locking assembly 20 is relocked, the locking components 30 between the upper and middle mold bodies 14 and the middle mold body 15, between the middle mold body 15 and the lower and middle mold bodies 16, and between the lower and middle mold bodies 16 and the lower mold body 17 are reset, and the locking block 32 can be removed from the recess 11.

[0044] Of course, the mold 10 in this embodiment can also be provided in other quantities such as three, four, or six.

[0045] like Figure 1 and Figure 3 As shown, in this embodiment, the locking door assembly 20 includes a locking door 21, which has a first section, a second section, and a third section connected in sequence by bending. The first and third sections are both located on the side of the second section facing the mold body 10, thus making the locking door 21 form a U-shaped structure. A locking area for locking the mold body 10 is formed between the first, second, and third sections, that is, inside the U-shaped structure. A part of the mold body 10 can be accommodated in the locking area and locked by the pressure of the locking door 21 or adjacent mold bodies 10. The lower surface of the first section is approximately parallel to the upper surface of the uppermost mold body 10 and the two are in a limiting fit. The upper surface of the third section is approximately parallel to the lower surface of the lowermost mold body 10 and the two are in a limiting fit. Meanwhile, in this embodiment, the lower surface of the first segment, the upper surface of the uppermost mold 10, the upper surface of the third segment, and the lower surface of the lowermost mold 10 are all inclined surfaces. In the direction that the locking door 21 approaches and locks the mold 10, the lower surface of the first segment and the upper surface of the third segment are inclined in a direction away from each other. This allows the inclined surfaces to press against each other when the locking door 21 approaches the mold 10, so that the locking door 21 applies a clamping force to the mold 10. This clamping force causes the molds 10 to be clamped together in a direction that brings them closer to each other, thereby achieving a locking fit between the molds 10.

[0046] The locking assembly 20 of this embodiment includes multiple locking doors 21. Locking doors 21 are provided on the left and right sides of the mold body 10, and the locking doors 21 on both sides move synchronously, thereby realizing synchronous locking and unlocking between the mold bodies 10.

[0047] In this embodiment, in addition to the locking components provided between the mold bodies 10, a similar structure is also provided between the flow channel plate 40 and the mold body 10. For example... Figures 7 to 9 As shown, the extruder head also includes a runner plate 40 and a runner locking assembly 50. The runner plate 40 is disposed at the outlet of the extrusion runner. The runner locking assembly 50 is disposed between the die body 10 and the runner plate 40. At least a portion of the runner locking assembly 50 can extend into the runner plate 40, thereby achieving the purpose of locking the runner plate 40 and the die body 10 together. When it is necessary to replace the runner plate 40, it is only necessary to remove the runner locking assembly 50 from the runner plate 40 to release the lock between the runner plate 40 and the die body 10, so that the runner plate 40 can be replaced.

[0048] like Figure 8 and Figure 9 As shown, the flow channel plate 40 in this embodiment has a groove 41. The groove 41 can be in the form of a square groove, a conical groove, or a wedge groove as needed. The groove 41 can be formed by the structure of the flow channel plate 40 itself, or it can be formed by adding a mating component to the plate and setting the groove 41 on the mating component. In this embodiment, a locking plate 42 is embedded in the flow channel plate 40, and the groove 41 is formed on the locking plate 42. The flow channel locking assembly 50 includes a driving part 51 and a locking head 52. The driving part 51 can be a hydraulic cylinder, a pneumatic cylinder, or other components. In this embodiment, a hydraulic cylinder is used. Its cylinder body is fixedly embedded in the mold body 10, while the cylinder rod can move telescopically. The locking head 52 is driven and connected to the end of the cylinder rod, so that the driving part 51 can drive the locking head 52 to move linearly. The shape and position of the locking head 52 correspond to the shape and position of the groove 41. Figure 8 and Figure 9 Examples of the locking head 52 being conical and wedge-shaped are given respectively, so that when the driving part 51 drives the locking head 52 to extend, the locking head 52 can be inserted into the groove 41 to achieve a locking fit with the flow channel plate 40, and when the driving part 51 drives the locking head 52 to retract, the locking head 52 can be removed from the groove 41 to achieve unlocking.

[0049] Optionally, the number of flow channel locking components 50 can be set as needed, and one or more can be set. In this embodiment, multiple are set, more specifically two. The two flow channel locking components 50 are located on both sides of the flow channel plate 40, so that the locking heads 52 of the two flow channel locking components 50 can lock the flow channel plate 40 from both sides to ensure the locking effect.

[0050] It should be noted that "multiple" in the above embodiments refers to at least two.

[0051] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0052] 1. This solves the problem of time-consuming and labor-intensive material replacement at the extruder die head in existing technologies;

[0053] 2. When changing the rubber material, the mold body that does not need to be moved can remain in its original state and will not be affected by the unlocking of the locking component, while the mold body that needs to be opened can be opened normally for the replacement operation. This achieves partition locking, making the whole replacement process convenient and quick, reducing a lot of unnecessary cleaning operations, reducing manual labor intensity, and improving the efficiency of replacement and processing.

[0054] 3. The locking and clamping components do not occupy the space at the front and rear ends of the die body, thus making it convenient to inspect and maintain the entire extruder head.

[0055] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An extruder head, characterized in that, include: At least three molds (10) are arranged vertically between each other, and an extrusion channel is formed between two adjacent molds (10); Locking assembly (20) is disposed on the side of the mold (10). The locking assembly (20) is movably disposed relative to the mold (10) and is capable of clamping the uppermost mold (10) and the lowermost mold (10), and providing a clamping force to the uppermost mold (10) and the lowermost mold (10) to bring them closer together to lock all the molds (10). A locking assembly (30) is provided between two adjacent molds (10). At least a portion of the locking assembly (30) can simultaneously extend into the two adjacent molds (10) and prevent relative rotation between the two adjacent molds (10).

2. The extruder head according to claim 1, characterized in that, The locking assembly (30) includes: Locking drive (31); A locking block (32) is driven to connect with the locking drive (31). Recesses (11) are provided on the surfaces of two adjacent mold bodies (10) facing each other. The locking drive (31) drives the locking block (32) to extend into or retract from the recesses (11) of the two mold bodies (10) to lock or unlock the two adjacent mold bodies (10).

3. The extruder head according to claim 2, characterized in that, In two adjacent recesses (11), at least one of the recesses (11) has an inclined surface (12) on its side. The locking block (32) has a locking ramp (33) that cooperates with the inclined surface (12). Along the direction in which the locking block (32) extends into the recess (11), both the locking ramp (33) and the inclined surface (12) are inclined toward the direction close to the central axis of the locking block (32).

4. The extruder head according to claim 3, characterized in that, The angle between the locking inclined surface (33) and the inclined surface (12) and the horizontal plane is 2.5 degrees to 30 degrees.

5. The extruder head according to claim 2, characterized in that, The locking drive (31) is located on the side of the lock assembly (20) away from the mold (10). The lock assembly (20) has a clearance hole. The drive shaft of the locking drive (31) passes through the clearance hole and is driven to connect with the locking block (32) inside the lock assembly (20).

6. The extruder head according to claim 1, characterized in that, There are multiple locking components (30), and each locking component (30) is provided between any two adjacent molds (10).

7. The extruder head according to claim 1, characterized in that, The locking assembly (20) includes a locking door (21) having a first section, a second section and a third section connected in sequence, and the first section and the third section are both located on the side of the second section facing the mold (10). A locking area for locking the mold (10) is formed between the first section, the second section and the third section. The first section is limited to the upper surface of the uppermost mold (10), and the third section is limited to the lower surface of the lowermost mold (10). The lower surface of the first section, the upper surface of the uppermost mold (10), the upper surface of the third section and the lower surface of the lowermost mold (10) are all inclined surfaces.

8. The extruder head according to claim 1, characterized in that, The extruder head also includes: A flow channel plate (40) is disposed at the outlet of the extrusion channel; A flow channel locking assembly (50) is disposed between the mold body (10) and the flow channel plate (40), at least a portion of the flow channel locking assembly (50) can extend into the flow channel plate (40) and lock the flow channel plate (40).

9. The extruder head according to claim 8, characterized in that, The flow channel plate (40) has a groove (41), which is a square groove, a conical groove, or a wedge groove. The flow channel locking assembly (50) includes a driving part (51) and a locking head (52). The driving part (51) is connected to the mold body (10), and the locking head (52) is driven to connect with the driving part (51) and extends into or out of the groove (41) under the drive of the driving part (51).

10. An extruder, characterized in that, The extruder head includes any one of claims 1 to 9.

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