Extruder head and extruder having the same

Abstract

The utility model provides an extruder head and have its extruder, extruder head includes: head main part, extrusion subassembly, plugboard and locking assembly, head main part has the accommodation groove, the die assembly is installed in the accommodation groove, the die assembly has the die frame and the die plate, the die frame is embedded in the accommodation groove, the die plate is embedded on the die frame, plugboard sets up at the opening one side place of accommodation groove, plugboard is movably arranged along the height direction of head main part, plugboard is used for the die plate and / or die frame is pressed tightly or avoids, locking assembly has the locking portion, the locking portion is located at the one side of plugboard away from head main part, the locking portion is movably arranged relative to plugboard. This extruder head effectively solves the phenomenon that the plugboard exists back or loose when the extruder head of prior art is running under the environment of continuous high load and strong vibration, leads to the compression failure, and further causes the unstable extrusion process, thereby reduces the technical problem of the finished product qualification rate.

Description

Technical Field

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

[0002] In the production process of rubber products, different types of rubber materials flow out from their respective extrusion units in sequence and enter the main body of the extruder head. Then, they pass through the corresponding flow channels on the die frame, are pre-formed, and finally achieve the compounding of multiple layers of rubber materials at the die plate, and are extruded from the rubber outlet of the die plate to form the final product.

[0003] Currently, the die frame is fixedly installed at the front end of the extruder head body, while the pre-die and die plate are stacked sequentially inside the die frame from front to back. The locking mechanism typically employs an inclined insert plate structure—the insert plate is arranged at a certain angle on one side of the die head body, i.e., there is an angle between the insert plate and the die head body. When the insert plate moves relative to the die head body to the locking position under the action of the drive mechanism, one end gradually cuts into the locking area between the die plate and the die frame, and contacts the end face of the die plate, generating a clamping force. This effectively limits the axial movement of the die plate, ultimately achieving overall fixation of the die frame, pre-die, and die plate, ensuring that they do not shift or loosen during extrusion, and maintaining the parallel state between the die plate and the die head body, thus guaranteeing the stability and yield of the extruded rubber compound.

[0004] However, in actual production, because the insert plate is usually driven by a single drive mechanism (such as a pneumatic or hydraulic cylinder) and only applies force from one end, uneven force distribution is prone to occur during the locking process. As a result, when the insert plate moves towards the die plate and reaches the locking position, achieving synchronous locking of the die plate and die frame, although initial fixation is achieved, the insert plate may still slowly retract or loosen during subsequent extrusion under high load and strong vibration conditions. This can lead to the insert plate gradually disengaging from the preset locking position or a gap appearing between the insert plate and the die plate. Once the insert plate disengages from the preset locking position or a gap appears between the insert plate and the die plate, the die plate is prone to axial movement or central bulging deformation under the pressure of the internal rubber compound, disrupting its parallel relationship with the die head body. This ultimately results in changes in the cross-sectional area of ​​the extrusion nozzle and a shift in the extrusion angle, severely affecting the dimensional accuracy of the composite rubber compound and product consistency, thus reducing the finished product qualification rate.

[0005] Therefore, existing technologies still need further development. Utility Model Content

[0006] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide an extruder head and an extruder having the same, so as to solve the technical problem in the prior art that when the extruder head is running under continuous high load and strong vibration environment, the insert plate may retract or loosen, resulting in clamping failure, which in turn causes instability in the extrusion process and reduces the yield of finished products.

[0007] To achieve the above-mentioned technical objectives, according to one aspect of this utility model: an extruder head includes: a head body, an extrusion assembly, an insert plate, and a locking assembly. The head body has a receiving groove; a die assembly is installed in the receiving groove, the die assembly having a die frame and a die plate, the die frame being embedded in the receiving groove, and the die plate being embedded in the die frame; an insert plate is disposed on one side of the opening of the receiving groove, the insert plate being movably disposed along the height direction of the head body, the insert plate being used to press or avoid the die plate and / or the die frame; and a locking assembly. The device includes a locking part located on the side of the insert plate away from the main body of the machine head. The locking part is movably disposed relative to the insert plate and has a locked state and an unlocked state for locking the insert plate. When the insert plate presses against the die plate and die frame, the locking part moves relative to the insert plate so that at least a portion of the locking part abuts against the insert plate, and the locking assembly is in the locked state. When the insert plate needs to avoid the die plate or die frame, the locking part moves relative to the insert plate so that there is a gap between the locking part and the insert plate, and the locking assembly is in the unlocked state.

[0008] Further, the side of the insert plate away from the main body of the machine head is a first inclined surface; along the direction from the side of the insert plate away from the mouthpiece to the side of the insert plate near the mouthpiece, the first inclined surface gradually tilts towards the main body of the machine head; the locking assembly includes: a locking plate, the locking plate is located on the side of the insert plate away from the main body of the machine head, the locking plate is movably disposed along the height direction of the main body of the machine head; the side of the locking plate near the insert plate is a locking surface; along the direction from the side of the locking plate away from the mouthpiece to the side of the locking plate near the mouthpiece, the locking surface gradually tilts towards the insert plate; wherein, when the insert plate abuts against the mouthpiece and the mouthpiece frame, the locking plate moves along the height direction of the main body of the machine head in the direction away from the mouthpiece, so that at least a portion of the locking surface abuts against the first inclined surface, and the locking assembly is in a locked state; when the insert plate needs to avoid the mouthpiece or the mouthpiece frame, the locking plate moves along the height direction of the main body of the machine head in the direction near the mouthpiece, there is a gap between the locking surface and the first inclined surface, and the locking assembly is in an unlocked state.

[0009] Furthermore, the extruder head also includes: a first driving member, which is driven to connect with the insert plate to drive the insert plate to move along the height direction of the head body; wherein, the body of the first driving member is disposed on the head body, and the driving end of the first driving member is connected to the insert plate.

[0010] Furthermore, the locking assembly also includes: a second driving member, the body of which is disposed on the side of the insert plate away from the orifice plate, the driving end of which is connected to the locking plate so as to drive the locking plate to move; the second driving member and the first driving member are spaced apart along the length direction of the insert plate; wherein, when the second driving member drives the locking plate to move towards the orifice plate along the height direction of the machine head body, the first driving member drives the insert plate to move away from the orifice plate along the height direction of the machine head body.

[0011] Furthermore, the locking assembly also includes: a limiting member, which is disposed on the side of the insert plate away from the machine head body, and the limiting member is provided with an insertion groove; the insertion groove extends along the height direction of the machine head body; the locking plate has an insertion part and a stop part adapted to the insertion groove, and the stop part is located on the side of the insertion part away from the mouth plate; wherein, when the locking assembly is in the unlocked state, the locking plate moves towards the mouth plate along the height direction of the machine head body, and the insertion part is inserted into the insertion groove so that the stop part and the limiting member form a stop engagement.

[0012] Furthermore, the locking plate has a stop section and an insertion section arranged sequentially along the height direction of the machine head body. The stop section forms a stop part, and the insertion section forms an insertion part. The side of the insertion section away from the insertion plate is a second inclined surface. Along the direction from the side of the locking plate close to the mouth plate to the side of the locking plate away from the mouth plate, the second inclined surface gradually inclines toward the insertion plate. The side of the insertion groove opposite to the second inclined surface is arranged parallel to the second inclined surface.

[0013] Furthermore, the extruder head also includes: a first support member and a second support member, which are disposed on the head body and located on the side of the head body near the insert plate; both the first and second support members extend along the thickness direction of the head body and are spaced apart along the length direction of the head body; the ends of the first and second support members away from the head body are connected to the limiting member; the head body, the first support member, the second support member, and the limiting member form a guide channel, and the insert plate is movably inserted into the guide channel along the height direction of the head body.

[0014] Furthermore, the side of the mouth plate near the insert plate is flush with the side of the mouth frame near the insert plate; the side of the insert plate opposite the machine head body is parallel to the side of the machine head body with the receiving groove; so that when the insert plate abuts against the mouth plate, the insert plate abuts against the mouth frame; wherein, the insert plate has a first pressing position, a second pressing position, and an initial position; when the insert plate is in the first pressing position, the insert plate presses against the mouth plate and the mouth frame; when the insert plate is in the second pressing position, the insert plate avoids the mouth plate and presses against the mouth frame; when the insert plate is in the initial position, the insert plate avoids the mouth frame.

[0015] Furthermore, the extruder head also includes: a first position detection element, a second position detection element, and a third position detection element. The first position detection element is located at the initial position to detect whether the insert plate has moved to the initial position; the second position detection element is located at the first clamping position to detect whether the insert plate has moved to the first clamping position; and the third position detection element is located at the second clamping position to detect whether the insert plate has moved to the second clamping position.

[0016] According to another aspect of the present invention: an extruder, comprising: an extruder head, wherein the extruder head is the extruder head described above.

[0017] Beneficial effects: Applying the technical solution of this utility model, the extruder head provided by this utility model includes: a head body, a die assembly, an insert plate, and a locking assembly. A receiving groove is provided on the side of the head body away from the extruder body. The die assembly is installed in the receiving groove. The die assembly has a die frame and a die plate. The die frame is embedded in the receiving groove, and the die plate is embedded in the die frame. The insert plate is disposed on one side of the opening of the receiving groove. The insert plate is movably disposed along the height direction of the head body. The insert plate is used to press or avoid the die plate and / or the die frame. When it is necessary to press the die plate and the die frame simultaneously, the insert plate moves along the height direction of the head body toward the die plate, so that one side of the insert plate moves to a first preset position, thereby causing the insert plate to abut against the die plate and the die frame, thus achieving simultaneous pressing of the die plate and the die frame by the insert plate. When only the die-cutting frame needs to be pressed, the insert plate moves away from the die-cutting plate along the height direction of the machine head body, so that one side of the insert plate moves to a second preset position, thereby abutting the die-cutting frame and achieving individual pressing of the die-cutting frame by the insert plate. When it is necessary to avoid the die-cutting frame, the insert plate continues to move away from the die-cutting plate along the height direction of the machine head body, so that one side of the insert plate moves to a third preset position, thereby achieving avoidance of the die-cutting frame by the insert plate. At this time, the insert plate not only avoids the die-cutting frame but also avoids the die-cutting plate. The locking assembly has a locking part located on the side of the insert plate away from the machine head body. The locking part is movably set relative to the insert plate and has a locked state and an unlocked state for locking the insert plate. When the insert plate presses against the lip plate and lip frame, the locking part moves relative to the insert plate so that at least part of the locking part abuts against the insert plate, and the locking assembly is in a locked state; when the insert plate needs to avoid the lip plate or lip frame, the locking part moves relative to the insert plate so that there is a gap between the locking part and the insert plate, and the locking assembly is in an unlocked state.

[0018] Therefore, by setting a locking assembly, with its locking part located on the side of the insert plate away from the die head body and movably positioned relative to the insert plate, after the insert plate moves along the height direction of the die head body and completes the pressing action on the die frame and die plate, the locking part can move relative to the insert plate until at least a portion of the locking part forms a rigid abutment with the insert plate, thereby entering the locking state and achieving reliable locking of the insert plate position. This locking mechanism effectively prevents the insert plate from retracting, loosening, or slightly shifting due to high-load operation or strong vibration of the equipment during subsequent extrusion, thus ensuring that the die frame and die plate are always in a controlled pressing state. This prevents the die frame and die plate from being displaced along the extrusion direction of the rubber material under the push of the internal high-pressure rubber material, or from the die plate bulging and deforming in the middle under the action of the internal high-pressure rubber material, thereby ensuring a constant outlet cross-sectional area and consistent extrusion channel geometry, ultimately achieving stable and uniform extrusion of the rubber material, improving the product cross-sectional dimensional accuracy and batch consistency, and reducing the scrap rate. Furthermore, the insert plate can clamp the die frame and / or die plate, allowing for die plate replacement according to production specifications. This means that only the die frame can be clamped by the insert plate, effectively preventing displacement of the die frame along the extrusion direction during die plate removal and avoiding gaps between the die frame and the die head body, which could allow material to enter. Simultaneously, it significantly simplifies the die-changing process, shortens downtime for die plate replacement, and improves production efficiency. This extruder die head effectively solves the technical problem in existing technologies where the insert plate retracts or loosens under continuous high load and strong vibration, leading to clamping failure, extrusion instability, and reduced finished product yield. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of an extruder head according to the present invention is shown; Figure 2 An exploded first-view schematic diagram of an extruder head according to the present invention is shown; Figure 3 An exploded view of the extruder head according to the present invention is shown. Figure 4 A schematic diagram of the extruder head according to the present invention is shown, with the first support member, the first support frame and the limiting member removed; Figure 5 It shows Figure 4 A magnified view of a section at point C.

[0020] The above figures include the following reference numerals: 1. Head body; 10. Receiving groove; 11. Rubber inlet; 2. Mouth shape assembly; 21. Mouth shape frame; 22. Mouth shape plate; 3. Insert plate; 31. First inclined surface; 32. Guide groove; 4. Locking assembly; 41. Locking plate; 411. Stop section; 412. Insertion section; 413. Second inclined surface; 42. Second driving component; 43. Limiting component; 430. Insertion groove; 5. First driving component; 6. First support component; 7. Guide block; 8. Guide channel; 9. Second support frame. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] Please see Figures 1 to 5 According to an embodiment of the present invention, an extruder head is provided, comprising: a head body 1, a die assembly 2, an insert plate 3, and a locking assembly 4. The head body 1 has a receiving groove 10; the die assembly 2 is installed in the receiving groove 10, and the die assembly 2 has a die frame 21 and a die plate 22, the die frame 21 being embedded in the receiving groove 10, and the die plate 22 being embedded in the die frame 21; the insert plate 3 is disposed on one side of the opening of the receiving groove 10, and the insert plate 3 is movably disposed along the height direction of the head body 1, the insert plate 3 being used to press or avoid the die plate 22 and / or the die frame 21; the locking assembly 4... The device has a locking part located on the side of the insert plate 3 away from the head body 1. The locking part is movably disposed relative to the insert plate 3 and has a locked state and an unlocked state for locking the insert plate 3. When the insert plate 3 presses against the mouth plate 22 and the mouth frame 21, the locking part moves relative to the insert plate 3 so that at least part of the locking part abuts against the insert plate 3, and the locking assembly 4 is in the locked state. When the insert plate 3 needs to avoid the mouth plate 22 or the mouth frame 21, the locking part moves relative to the insert plate 3 so that there is a gap between the locking part and the insert plate 3, and the locking assembly 4 is in the unlocked state.

[0023] As can be seen, the extruder head provided by this utility model includes: a head body 1, a die assembly 2, an insert plate 3, and a locking assembly 4. The head body 1 has a receiving groove 10 on the side away from the extruder body. The die assembly 2 is installed in the receiving groove 10. The die assembly 2 has a die frame 21 and a die plate 22. The die frame 21 is embedded in the receiving groove 10, and the die plate 22 is embedded in the die frame 21. The insert plate 3 is disposed on one side of the opening of the receiving groove 10. The insert plate 3 is movably disposed along the height direction of the head body 1. The insert plate 3 is used to press or avoid the die plate 22 and / or the die frame 21. When it is necessary to simultaneously press the mouth plate 22 and the mouth frame 21, the insert plate 3 moves along the height direction of the machine head body 1 toward the mouth plate 22, so that one side of the insert plate 3 moves to a first preset position, thereby abutting the insert plate 3 against the mouth plate 22 and the mouth frame 21, thus achieving simultaneous pressing of the mouth plate 22 and the mouth frame 21 by the insert plate 3. When it is only necessary to press the mouth frame 21, the insert plate 3 moves along the height direction of the machine head body 1 toward a direction away from the mouth plate 22, so that one side of the insert plate 3 moves to a second preset position, thereby abutting the insert plate 3 against the mouth frame 21, thus achieving separate pressing of the mouth frame 21 by the insert plate 3. When it is necessary to avoid the lip-shaped frame 21, the insert plate 3 continues to move away from the lip-shaped plate 22 along the height direction of the machine head body 1, thereby moving one side of the insert plate 3 to a third preset position, thus achieving the avoidance of the lip-shaped frame 21 by the insert plate 3. At this time, the insert plate 3 not only avoids the lip-shaped frame 21, but also avoids the lip-shaped plate 22. The locking assembly 4 has a locking part, which is located on the side of the insert plate 3 away from the machine head body 1. The locking part is movably set relative to the insert plate 3, and the locking part has a locked state and an unlocked state for locking the insert plate 3. When the insert plate 3 presses against the mouth plate 22 and the mouth frame 21, the locking part moves relative to the insert plate 3 so that at least part of the locking part abuts against the insert plate 3, and the locking assembly 4 is in a locked state; when the insert plate 3 needs to avoid the mouth plate 22 or the mouth frame 21, the locking part moves relative to the insert plate 3 so that there is a gap between the locking part and the insert plate 3, and the locking assembly 4 is in an unlocked state.

[0024] Therefore, by setting the locking component 4, the locking part is located on the side of the insert plate 3 away from the machine head body 1, and is movably set relative to the insert plate 3. When the insert plate 3 moves along the height direction of the machine head body 1 and completes the pressing action on the mouth frame 21 and the mouth plate 22, the locking part can move relative to the insert plate 3 until at least part of the locking part forms a rigid abutment with the insert plate 3, thereby entering the locking state and realizing the reliable locking of the position of the insert plate 3. This locking mechanism effectively prevents the insert plate 3 from retracting, loosening, or slightly shifting during subsequent extrusion due to high equipment load or strong vibration. This ensures that the nozzle frame 21 and nozzle plate 22 are always under controlled pressure, preventing them from shifting along the extrusion direction under the pressure of the internal high-pressure rubber material, or causing the nozzle plate 22 to bulge and deform in the middle under the action of the internal high-pressure rubber material. This ensures a constant outlet cross-sectional area and consistent extrusion channel geometry, ultimately achieving stable and uniform rubber extrusion, improving product cross-sectional dimensional accuracy and batch consistency, and reducing scrap rate. Furthermore, the insert plate 3 can clamp the die frame 21 and / or die plate 22. Therefore, when the die plate 22 needs to be replaced according to production specifications, the insert plate 3 can clamp only the die frame 21, thus fixing the die frame 21. This effectively prevents the die frame 21 from shifting along the extrusion direction of the rubber material when the die plate 22 is removed, avoiding gaps between the die frame 21 and the die head body 1, which could allow rubber material to enter these gaps. Simultaneously, it significantly simplifies the die-changing operation process, shortens downtime for die plate replacement, and improves production efficiency. This extruder die head effectively solves the technical problem in the prior art where, under continuous high load and strong vibration conditions, the insert plate retracts or loosens, leading to clamping failure, which in turn causes instability in the extrusion process and reduces the finished product yield.

[0025] The first preset position refers to the final working position reached by the insert plate 3 when simultaneously pressing the die plate 22 and the die frame 21. This position ensures reliable contact between the insert plate 3 and both the die plate 22 and the die frame 21, effectively constraining the overall structure of the die plate 22 while applying sufficient clamping force, especially preventing central bulging deformation under high pressure during the extrusion process. The second preset position refers to the intermediate position reached by the insert plate 3 when only pressing the die frame 21 and avoiding the die plate 22. At this position, the insert plate 3 only contacts and applies clamping force to the die frame 21, without interfering with the die plate 22. This position ensures that the die frame 21 is firmly fixed and maintains its seal with the die head body 1, while providing operating space for the disassembly and replacement of the die plate 22, facilitating quick mold changes. The third preset position refers to the fully retracted position reached by the insert plate 3 when completely avoiding the die assembly 2. At this position, the insert plate 3 has completely exited the clamping area of ​​the receiving groove 10, and there is no contact or interference with the mouth frame 21 and the mouth plate 22. This provides ample space for the overall disassembly or maintenance of the mouth assembly, improving the maintainability and ease of operation of the equipment.

[0026] Furthermore, such as Figure 1 As shown, there are two insert plates 3 and two locking components 4, with each insert plate 3 and locking component 4 corresponding to the other. The two insert plates 3 are symmetrically arranged along the height direction of the machine head body 1 and can move synchronously in opposite directions to achieve movement towards or away from each other.

[0027] Furthermore, at least two rubber inlets 11 are provided on the side of the machine head body 1 away from the receiving tank 10. The two rubber inlets 11 are spaced apart along the height direction of the machine head body 1, and each rubber inlet 11 is connected to the receiving tank 10.

[0028] When the two insert plates 3 approach each other, they apply clamping force to the mouth frame 21 and / or mouth plate 22 from the top and bottom respectively, achieving stable and uniform bidirectional clamping. When they move away from each other, the clamping force is gradually released, providing sufficient operating space for the disassembly and assembly of the mouth plate 22 or the entire mouth assembly 2. This symmetrical double insert plate structure effectively improves the problem of uneven force caused by traditional single-sided clamping, enhances the coaxiality and sealing reliability of the mouth assembly installation, and further enhances the operational stability of the die head under high load and strong vibration conditions.

[0029] Specifically, such as Figures 2 to 5As shown, the side of the insert plate 3 away from the machine head body 1 is the first inclined surface 31; along the direction from the side of the insert plate 3 away from the mouth plate 22 to the side of the insert plate 3 near the mouth plate 22, the first inclined surface 31 gradually tilts towards the machine head body 1; the locking assembly 4 includes: a locking plate 41, the locking plate 41 is located on the side of the insert plate 3 away from the machine head body 1, the locking plate 41 is movably arranged along the height direction of the machine head body 1; the side of the locking plate 41 near the insert plate 3 is the locking surface; along the direction from the side of the locking plate 41 away from the mouth plate 22 to the side of the locking plate 41 near the mouth plate 22, the first inclined surface 31 gradually tilts towards the machine head body 1. The locking surface gradually tilts towards the insert plate 3. When the insert plate 3 abuts against the mouth plate 22 and the mouth frame 21, the locking plate 41 moves away from the mouth plate 22 along the height direction of the machine head body 1, so that at least a portion of the locking surface abuts against the first inclined surface 31, and the locking assembly 4 is in a locked state. When the insert plate 3 needs to avoid the mouth plate 22 or the mouth frame 21, the locking plate 41 moves towards the mouth plate 22 along the height direction of the machine head body 1, and there is a gap between the locking surface and the first inclined surface 31, and the locking assembly 4 is in an unlocked state. The locking plate 41 forms the locking part of the locking assembly 4.

[0030] With the above-described structure, the surface of the insert plate 3 furthest from the machine head body 1 is designated as the first inclined surface 31, and the locking surface of the locking plate 41 (i.e., the side opposite to the first inclined surface 31) is also designated as an inclined surface. The two inclined surfaces cooperate with each other to form an inclined self-locking structure. When the locking plate 41 moves along the height direction of the machine head body 1 toward the direction away from the mouth plate 22, its locking surface gradually contacts the first inclined surface 31 of the insert plate 3 and generates a squeezing effect. During this process, the interaction between the inclined surfaces generates a horizontal component force. This component force, on the one hand, further pushes the insert plate 3 toward the mouth frame 21 and mouth plate 22 to press it tight, enhancing the pressing reliability; on the other hand, the reaction force tightly weds the insert plate 3 and the locking plate 41, realizing the reverse locking of the insert plate itself and preventing it from retracting or loosening under high load or vibration conditions. When it is necessary to release the insert plate 3 to avoid the mouthpiece assembly, the locking plate 41 moves along the height direction of the machine head body 1 towards the mouthpiece plate 22, causing the locking surface to gradually disengage from the contact with the first inclined surface 31, forming a gap between them. At this time, the inclined surface constraint is released, and the insert plate 3 can move freely along the height direction under the driving action to complete the avoidance operation of the mouthpiece frame 21 and the mouthpiece plate 22. It can be seen that the inclined surface design significantly increases the contact area between the locking plate 41 and the insert plate 3 in the locked state and improves the friction. This not only ensures a more stable connection between the two, but also effectively prevents the insert plate 3 from retracting or loosening under high load and strong vibration environments. In addition, the locking and unlocking functions can be achieved simply by moving the locking plate 41, without the need for complex mechanical structures or additional operating steps. This design greatly facilitates the quick replacement or adjustment of the mouthpiece assembly 2.

[0031] Furthermore, the first inclined surface 31 is arranged parallel to the locking surface.

[0032] Furthermore, the tilting direction of the first inclined surface 31 forms a first preset angle with the height direction of the head body 1. This first preset angle is greater than 0° and less than or equal to 5°. Preferably, the first preset angle is 2°.

[0033] Furthermore, the inclination direction of the locking surface forms a second preset angle with the height direction of the machine head body 1. This second preset angle is greater than 0° and less than or equal to 5°. Preferably, the second preset angle is 2°.

[0034] Specifically, such as Figure 1 As shown, the extruder head also includes: a first driving member 5, which is drivenly connected to the insert plate 3 to drive the insert plate 3 to move along the height direction of the head body 1; wherein, the body of the first driving member 5 is disposed on the head body 1, and the driving end of the first driving member 5 is connected to the insert plate 3.

[0035] With the above-described structure, the first driving component 5 applies a constant driving force to the insert plate 3 and achieves precise stroke control, ensuring that the position and pressure of each clamping action remain highly consistent, effectively improving the repeatability and reliability of the clamping process. Simultaneously, the introduction of the first driving component 5 automates the movement of the insert plate 3, replacing the traditional manual disassembly or adjustment method. When it is necessary to replace the die plate 22 or disassemble the die assembly 2 as a whole, the clamping and releasing actions can be completed quickly, significantly shortening downtime, improving mold changing efficiency, and reducing close-range work for operators in high-temperature and high-pressure environments, further enhancing production efficiency and operational safety.

[0036] Furthermore, the extruder head also includes: a first support frame, which is mounted on the head body 1, and the body of the first drive component 5 is disposed on the first support frame.

[0037] Furthermore, there are two first driving components 5 and two first support frames, each corresponding to one of the two insert plates 3. The two first support frames are arranged opposite each other along the height direction of the machine head body 1.

[0038] Furthermore, the first driving component 5 is located in the middle of the insert plate 3.

[0039] Optionally, the first driving component 5 is a first hydraulic cylinder.

[0040] Specifically, such as Figure 1As shown, the locking assembly 4 further includes: a second driving member 42, the body of which is disposed on the side of the insert plate 3 away from the mouth plate 22, and the driving end of the second driving member 42 is connected to the locking plate 41 so as to drive the locking plate 41 to move through the second driving member 42; the second driving member 42 and the first driving member 5 are spaced apart along the length direction of the insert plate 3; wherein, when the second driving member 42 drives the locking plate 41 to move towards the mouth plate 22 along the height direction of the machine head body 1, the first driving member 5 drives the insert plate 3 to move away from the mouth plate 22 along the height direction of the machine head body 1.

[0041] With the above-described structure, the locking plate 41 can be automatically driven by the second drive component 42 to perform locking and unlocking actions without manual intervention, significantly improving the automation level of the locking and unlocking processes and making the switching between the locking and unlocking states faster, more accurate, and more reliable. Simultaneously, the body of the second drive component 42 is installed on the side of the insert plate 3 away from the mouth-shaped plate 22, with its drive end connected to the locking plate 41. When the second drive component 42 drives the locking plate 41 towards the mouth-shaped plate 22 (downward movement) to perform the unlocking action, according to the principle of action and reaction, its drive end will apply a force in the opposite direction to the insert plate 3. This reaction force is consistent with the direction in which the first drive component 5 pushes the insert plate 3 upward, forming a superimposed thrust. This provides auxiliary thrust for the upward movement of the insert plate 3 when the first drive component 5 synchronously drives the insert plate 3 to move away from the mouth-shaped plate 22 (e.g., upward) along the height direction of the machine head body 1. This synergistic effect not only reduces the load and energy consumption of the first drive component 5, extending its service life, but also improves the response speed and smoothness of the platen's upward movement, further optimizing the overall coordination and energy efficiency. Furthermore, through synchronous reverse movement, the clamping is released immediately upon unlocking, effectively preventing jamming, scratching, or stress concentration caused by improper sequence or asynchronous movements.

[0042] Furthermore, each locking assembly 4 has two second driving members 42, which are spaced apart along the length of the insert plate 3, and the first driving member 5 is located between the two second driving members 42.

[0043] Optionally, the second drive component 42 is a second hydraulic cylinder.

[0044] Furthermore, the extruder head also includes a second support frame 9, which is mounted on the side of the insert plate 3 away from the orifice plate 22. The second support frame 9 extends along the thickness direction of the head body 1, and a portion of the second support frame 9 protrudes from the first inclined surface. A second drive member 42 is mounted on the second support frame 9, with its drive end facing the locking plate 41. With this structural arrangement, the second support frame 9 not only provides a stable mounting base and load-bearing support for the second drive member 42, ensuring its rigidity and stability during operation, but also structurally limits the locking plate 41. Specifically, when the locking plate 41 moves along the height direction of the head body 1 away from the orifice plate 22 under the drive of the second drive member 42, the second support frame 9 can limit the range of motion of the locking plate 41, preventing excessive movement or deviation from the preset trajectory, thereby achieving effective stroke limitation and position constraint of the locking plate 41.

[0045] Furthermore, each locking assembly 4 has two second support frames 9, and the two second support frames 9 are configured in a one-to-one correspondence with the two second drive members 42.

[0046] Specifically, such as Figure 1 and Figure 3 As shown, the locking assembly 4 also includes: a limiting member 43, which is disposed on the side of the insert plate 3 away from the head body 1, and the limiting member 43 is provided with an insertion groove 430; the insertion groove 430 extends along the height direction of the head body 1; the locking plate 41 has an insertion part and a stop part, the insertion part is adapted to the insertion groove 430, and the stop part is located on the side of the insertion part away from the mouth plate 22; wherein, when the locking assembly 4 is in the unlocked state, the locking plate 41 moves along the height direction of the head body 1 toward the mouth plate 22, and the insertion part is inserted into the insertion groove 430 so that the stop part and the limiting member 43 form a stop engagement.

[0047] With the above-mentioned structural configuration, the insertion part and the insertion slot 430 cooperate with each other to form a guide structure, which effectively restricts the locking plate 41 to move only along the height direction of the machine head body 1, preventing it from deflecting, shaking or getting stuck during operation, thereby ensuring the accuracy and stability of the movement trajectory of the locking plate 41, and significantly improving the repeatability and reliability of locking and unlocking actions.

[0048] Simultaneously, when the locking plate 41 moves along the height direction of the machine head body 1 toward the mouth plate 22 and reaches the unlocking position, its stop part contacts the limiting member 43 and forms a stop engagement, restricting the locking plate 41 from continuing to move and preventing it from exceeding the preset stroke. This structure effectively limits the movement range of the locking plate 41, realizing precise control of its stroke and reliable constraint of its position.

[0049] Specifically, such as Figure 2 and Figure 3As shown, the locking plate 41 has a stop section 411 and an insertion section 412 arranged sequentially along the height direction of the head body 1. The stop section 411 forms a stop portion, and the insertion section 412 forms an insertion portion. The side of the insertion section 412 away from the insertion plate 3 is a second inclined surface 413. Along the direction from the side of the locking plate 41 near the mouth plate 22 to the side of the locking plate 41 away from the mouth plate 22, the second inclined surface 413 gradually inclines toward the insertion plate 3. The side of the insertion groove 430 opposite to the second inclined surface 413 is arranged parallel to the second inclined surface 413.

[0050] With the above-described structure, the surface of the insertion section 412 away from the insertion plate 3 is designed as a second inclined surface 413, and the groove wall surface opposite to it in the insertion groove 430 is kept parallel to this inclined surface, forming a pair of matching and fitting inclined surface structures. When the locking plate 41 moves away from the orifice plate 22 along the height direction of the machine head body 1, the second inclined surface 413 gradually contacts and tightly fits the corresponding inclined surface in the insertion groove 430. This pressing fit between the inclined surfaces not only locks the locking position of the locking plate 41, effectively preventing it from loosening, retracting, or shifting under vibration or impact during equipment operation, but also significantly improves the stability and reliability of the locking state; at the same time, the normal pressure generated by the interaction of the inclined surfaces can be decomposed into a horizontal component force, which acts on the insertion plate 3, further pushing it to press against the orifice frame 21 and orifice plate 22. Thus, not only is the locking plate 41 reliably locked, but it also enhances the clamping effect of the insert plate 3 on the mouth-shaped assembly 2, forming a synergistic strengthening effect of "locking with pressure". This mechanism makes the locking action and the clamping function mutually reinforcing, significantly improving the fixing reliability of the insert plate 3 on the mouth-shaped assembly 2 and the overall structural rigidity.

[0051] Furthermore, there are at least two insertion sections 412, which are spaced apart along the length direction of the stop section 411 (i.e., the length direction of the locking plate 41). The limiting member 43 is provided with at least two insertion slots 430, and each insertion section 412 is provided in correspondence with each insertion slot 430.

[0052] Furthermore, each insertion section 412 and the stop section 411 are integrally formed. The side of each insertion section 412 near the insertion plate 3 and the side of the stop section 411 near the insertion plate 3 form a locking surface.

[0053] The length directions of the locking plate 41, the insertion plate 3, and the machine head body 1 are as follows: Figure 1 The direction indicated by the middle arrow A; the thickness direction of the main body 1 of the machine head is as follows: Figure 1 The direction indicated by the middle arrow B.

[0054] Specifically, such as Figure 1 and Figure 2As shown, the extruder head also includes: a first support member 6 and a second support member. The first support member 6 and the second support member are disposed on the head body 1, and the first support member 6 and the second support member are located on the side of the head body 1 near the insert plate 3. The first support member 6 and the second support member both extend along the thickness direction of the head body 1. The first support member 6 and the second support member are spaced apart along the length direction of the head body 1. The end of the first support member 6 away from the head body 1 and the end of the second support member away from the head body 1 are both connected to the limiting member 43. The head body 1, the first support member 6, the second support member and the limiting member 43 form a guide channel 8. The insert plate 3 is movably inserted into the guide channel 8 along the height direction of the head body 1.

[0055] With the above-described structure, the first support member 6 and the second support member are connected to the machine head body 1 and the limiting member 43, so that the limiting member 43 is relatively fixed to the machine head body 1, and the first support member 6 and the second support member provide support for the limiting member 43. At the same time, the machine head body 1, the first support member 6, the second support member and the limiting member 43 form a guide channel 8, which can avoid the movement of the insert plate 3 and the locking plate 41, and also provides precise path constraints for the movement of the insert plate 3, effectively preventing it from deviating, tilting or shaking during operation.

[0056] Furthermore, at least one guide groove 32 is provided on the insert plate 3, which extends along the height direction of the extruder head body 1. The extruder head also includes at least one guide block 7, which is disposed on the side of the extruder head body 1 near the insert plate 3, and protrudes from the side of the extruder head body 1 near the insert plate 3. The guide blocks 7 are correspondingly arranged with the guide grooves 32, and the guide blocks 7 are slidably disposed within the guide grooves 32 along the extending direction of the guide grooves 32.

[0057] In existing technology, a locking plate is typically used at approximately a 10° angle to the die plate for locking. When the locking plate is inserted and presses against the die plate, the die frame is simultaneously locked. However, due to this angle, when the locking plate retracts and releases its pressure on the die plate, the die frame instantly loses its locking force and cannot remain fixed. This structural defect means that when only the die plate needs to be replaced, it cannot be disassembled separately; instead, the die plate and die frame must be removed and replaced as a whole. This not only increases the complexity of die replacement but also significantly prolongs downtime and reduces production efficiency.

[0058] To solve the above problems, the present invention improves the locking structure, specifically as follows: the side of the mouth plate 22 near the insert plate 3 is flush with the side of the mouth frame 21 near the insert plate 3; the side of the insert plate 3 opposite to the machine head body 1 is parallel to the side of the machine head body 1 where the receiving groove 10 is provided; so that when the insert plate 3 abuts against the mouth plate 22, the insert plate 3 abuts against the mouth frame 21; wherein, the insert plate 3 has a first pressing position, a second pressing position, and an initial position; when the insert plate 3 is in the first pressing position, the insert plate 3 presses against the mouth plate 22 and the mouth frame 21; when the insert plate 3 is in the second pressing position, the insert plate 3 avoids the mouth plate 22 and presses against the mouth frame 21; when the insert plate 3 is in the initial position, the insert plate 3 avoids the mouth frame 21.

[0059] By adopting the above structural configuration, and by aligning the pressure surfaces of the die plate and die frame flush, combined with the multi-stage clamping design of the insert plate, the insert plate 3 can be moved to the second clamping position when replacing the die plate 22, thereby releasing the die plate 22 while maintaining the clamping state on the die frame 21. Therefore, the entire die assembly 2 can be replaced without disassembling the die plate; the die change operation can be completed simply by replacing the die plate 22. This significantly reduces downtime, improves die change efficiency, and enhances production continuity and process flexibility.

[0060] Specifically, the extruder head also includes: a first position detection element, a second position detection element, and a third position detection element. The first position detection element is located at the initial position to detect whether the insert plate 3 has moved to the initial position; the second position detection element is located at the first clamping position to detect whether the insert plate 3 has moved to the first clamping position; and the third position detection element is located at the second clamping position to detect whether it has moved to the second clamping position. With this structural arrangement, by setting the first, second, and third position detection elements to correspond to the initial position, second clamping position, and first clamping position of the insert plate 3, respectively, precise monitoring and closed-loop control of the entire movement process of the insert plate 3 are achieved. This effectively ensures that the insert plate 3 can accurately and reliably reach the preset position each time, improving the repeatability of the action and the stability of the system operation.

[0061] Optionally, the first position detection element is a first position sensor or a first proximity switch; the second position detection element is a second position sensor or a second proximity switch; and the third position detection element is a third position sensor or a third proximity switch.

[0062] Furthermore, the extruder head also includes a control unit, which is communicatively connected to the first position detection unit, the second position detection unit, the third position detection unit, and the first drive unit 5. The control unit controls the start and stop of the first drive unit 5 based on the detection signals of the first position detection unit, the second position detection unit, and the third position detection unit on the side of the insert plate 3 near the die plate 22.

[0063] Furthermore, the mouth assembly 2 also includes a pre-mouth, which is disposed within the mouth frame 21 and located on the side of the mouth plate 22 near the bottom wall of the receiving groove 10.

[0064] Optionally, the process of changing the die assembly 2 at the extruder die head is as follows: When it is necessary to replace the mouth shape component 2, first control the second drive component 42 to start synchronously with the first drive component 5: The second driving component 42 drives the locking plate 41 to move along the height direction of the machine head body 1 toward the receiving groove 10 (i.e. toward the mouth plate 22), thereby releasing the locking state. At this time, the locking component 4 is in the unlocked state. At the same time, the first driving component 5 drives the insert plate 3 to move away from the receiving groove 10 (i.e. away from the mouth plate 22) along the height direction of the head body 1, gradually releasing the clamping force on the mouth assembly 2.

[0065] When the locking plate 41 moves to the limit position (i.e., the unlocked position), the stop section 411 and the limiting member 43 form a stop engagement, and the second driving member 42 stops moving; when the insert plate 3 moves to the initial position, the first position detection member detects the position signal and transmits the position signal to the control member. After receiving the position signal, the control member controls the first driving member 5 to stop running.

[0066] At this time, the insert plate 3 completely avoids the mouth assembly 2, and the old mouth assembly 2 can be removed from the receiving groove 10 of the machine head body 1. After cleaning the residual adhesive, the new mouth assembly 2 can be installed into the receiving groove 10.

[0067] After installation, the first drive unit 5 is activated, driving the insert plate 3 to move along the height direction of the head body 1 toward the receiving groove 10 (i.e. toward the mouth plate 22) until the insert plate 3 presses against the new mouth assembly 2 and reaches the first pressing position. When the insert plate 3 moves to the first pressing position, the second position detection unit detects the position signal and transmits the position signal to the control unit. After receiving the position signal, the control unit controls the first drive unit 5 to stop running.

[0068] Subsequently, the second drive unit 42 is activated, causing the locking plate 41 to move along the height direction of the machine head body 1 in a direction away from the mouth plate 22. At this time, the locking assembly 4 is in a locked state. When the locking plate 41 moves to the designated position, the second drive unit 42 stops moving.

[0069] Optionally, the process of changing the die plate 22 at the extruder die head is as follows: When it is necessary to replace the mouthpiece 22, first control the second drive unit 42 to start synchronously with the first drive unit 5: The second driving component 42 drives the locking plate 41 to move along the height direction of the machine head body 1 toward the receiving groove 10 (i.e. toward the mouth plate 22), thereby releasing the locking state. At this time, the locking component 4 is in the unlocked state. At the same time, the first driving component 5 drives the insert plate 3 to move away from the receiving groove 10 (i.e. away from the mouth plate 22) along the height direction of the head body 1, gradually releasing the clamping force on the mouth assembly 2.

[0070] When the locking plate 41 moves to the limit position (i.e., the unlocked position), the stop section 411 and the limiting member 43 form a stop engagement, and the second driving member 42 stops moving; when the insert plate 3 moves to the second pressing position, the third position detection member detects the position signal and transmits the position signal to the control member. After receiving the position signal, the control member controls the first driving member 5 to stop running.

[0071] At this time, the insert plate 3 avoids the mouth plate 22 while pressing and fixing the mouth frame 21; then the old mouth plate 22 can be removed from the mouth frame 21, and after the glue is drained and the residual glue is cleaned, the new mouth plate 22 is installed on the mouth frame 21.

[0072] After installation, the first drive unit 5 is activated, driving the insert plate 3 to move along the height direction of the head body 1 toward the receiving groove 10 (i.e. toward the mouth plate 22) until the insert plate 3 presses against the new mouth assembly 2 and reaches the first pressing position. When the insert plate 3 moves to the first pressing position, the second position detection unit detects the position signal and transmits the position signal to the control unit. After receiving the position signal, the control unit controls the first drive unit 5 to stop running.

[0073] Subsequently, the second drive unit 42 is activated, causing the locking plate 41 to move along the height direction of the machine head body 1 in a direction away from the mouth plate 22. At this time, the locking assembly 4 is in a locked state. When the locking plate 41 moves to the designated position, the second drive unit 42 stops moving.

[0074] This utility model also provides an extruder, including: an extruder head, wherein the extruder head is the extruder head described in the above embodiment.

[0075] It should be noted that the terms "first," "second," etc., 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 orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0076] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0077] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0078] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0079] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An extruder head, characterized in that, include: The head body (1) has a receiving groove (10). Mouth shape assembly (2) is installed in the receiving groove (10). The mouth shape assembly (2) has a mouth shape frame (21) and a mouth shape plate (22). The mouth shape frame (21) is embedded in the receiving groove (10), and the mouth shape plate (22) is embedded in the mouth shape frame (21). Insert plate (3) is provided on one side of the opening of the receiving groove (10). The insert plate (3) is movably provided along the height direction of the head body (1). The insert plate (3) is used to press or avoid the mouth plate (22) and / or the mouth frame (21). The locking assembly (4) has a locking part located on the side of the insert plate (3) away from the head body (1). The locking part is movably disposed relative to the insert plate (3). The locking part has a locked state and an unlocked state for locking the insert plate (3). When the insert plate (3) presses against the mouth plate (22) and the mouth frame (21), the locking part moves relative to the insert plate (3) so that at least part of the locking part abuts against the insert plate (3), and the locking assembly (4) is in the locked state; when the insert plate (3) needs to avoid the mouth plate (22) or the mouth frame (21), the locking part moves relative to the insert plate (3) so that there is a gap between the locking part and the insert plate (3), and the locking assembly (4) is in the unlocked state.

2. The extruder head according to claim 1, characterized in that, The side of the insert plate (3) away from the head body (1) is the first inclined surface (31); along the direction from the side of the insert plate (3) away from the mouth plate (22) to the side of the insert plate (3) close to the mouth plate (22), the first inclined surface (31) gradually tilts toward the head body (1); The locking assembly (4) includes: a locking plate (41), which is located on the side of the insert plate (3) away from the head body (1), and is movably disposed along the height direction of the head body (1); the side of the locking plate (41) close to the insert plate (3) is a locking surface; along the direction from the side of the locking plate (41) away from the mouth plate (22) to the side of the locking plate (41) close to the mouth plate (22), the locking surface gradually tilts toward the insert plate (3); When the insert plate (3) abuts against the mouth plate (22) and the mouth frame (21), the locking plate (41) moves away from the mouth plate (22) along the height direction of the head body (1) so that at least a portion of the locking surface abuts against the first inclined surface (31), and the locking assembly (4) is in the locked state; when the insert plate (3) needs to avoid the mouth plate (22) or the mouth frame (21), the locking plate (41) moves closer to the mouth plate (22) along the height direction of the head body (1), and there is a gap between the locking surface and the first inclined surface (31), and the locking assembly (4) is in the unlocked state.

3. The extruder head according to claim 2, characterized in that, The extruder head further includes: a first driving member (5), which is drivenly connected to the insert plate (3) to drive the insert plate (3) to move along the height direction of the head body (1) through the first driving member (5); The body of the first driving component (5) is disposed on the machine head body (1), and the driving end of the first driving component (5) is connected to the insert plate (3).

4. The extruder head according to claim 3, characterized in that, The locking assembly (4) further includes: a second driving member (42), the body of which is disposed on the side of the insert plate (3) away from the mouth plate (22), the driving end of which is connected to the locking plate (41) so as to drive the locking plate (41) to move through the second driving member (42); the second driving member (42) and the first driving member (5) are spaced apart along the length direction of the insert plate (3); When the second driving member (42) drives the locking plate (41) to move toward the mouth plate (22) along the height direction of the head body (1), the first driving member (5) drives the insert plate (3) to move away from the mouth plate (22) along the height direction of the head body (1).

5. The extruder head according to claim 2, characterized in that, The locking assembly (4) further includes: a limiting member (43), which is disposed on the side of the insert plate (3) away from the head body (1), and the limiting member (43) is provided with an insertion groove (430); the insertion groove (430) extends along the height direction of the head body (1); the locking plate (41) has an insertion part and a stop part adapted to the insertion groove (430), and the stop part is located on the side of the insertion part away from the mouth plate (22); When the locking assembly (4) is in the unlocked state, the locking plate (41) moves toward the mouth plate (22) along the height direction of the head body (1), and the insertion part is inserted into the insertion slot (430) so that the stop part and the limiting member (43) form a stop engagement.

6. The extruder head according to claim 5, characterized in that, The locking plate (41) has a stop section (411) and an insertion section (412) arranged sequentially along the height direction of the head body (1). The stop section (411) forms the stop portion, and the insertion section (412) forms the insertion portion. The side of the insertion section (412) away from the insertion plate (3) is a second inclined surface (413). Along the direction from the side of the locking plate (41) close to the mouth plate (22) to the side of the locking plate (41) away from the mouth plate (22), the second inclined surface (413) gradually tilts toward the insertion plate (3). The side of the insertion groove (430) opposite to the second inclined surface (413) is arranged parallel to the second inclined surface (413).

7. The extruder head according to claim 5, characterized in that, The extruder head further includes: a first support member (6) and a second support member, the first support member (6) and the second support member are disposed on the head body (1), and the first support member (6) and the second support member are located on the side of the head body (1) near the insert plate (3); the first support member (6) and the second support member both extend along the thickness direction of the head body (1), the first support member (6) and the second support member are spaced apart along the length direction of the head body (1), and the end of the first support member (6) away from the head body (1) and the end of the second support member away from the head body (1) are both connected to the limiting member (43), the head body (1), the first support member (6), the second support member and the limiting member (43) form a guide channel (8), and the insert plate (3) is movably inserted into the guide channel (8) along the height direction of the head body (1).

8. The extruder head according to claim 1, characterized in that, The side of the mouth plate (22) near the insert plate (3) is flush with the side of the mouth frame (21) near the insert plate (3); the side of the insert plate (3) opposite to the head body (1) is parallel to the side of the head body (1) where the receiving groove (10) is provided; so that when the insert plate (3) abuts against the mouth plate (22), the insert plate (3) abuts against the mouth frame (21); The insert plate (3) has a first pressing position, a second pressing position and an initial position; when the insert plate (3) is in the first pressing position, the insert plate (3) presses the mouth plate (22) and the mouth frame (21); when the insert plate (3) is in the second pressing position, the insert plate (3) avoids the mouth plate (22) and presses the mouth frame (21); when the insert plate (3) is in the initial position, the insert plate (3) avoids the mouth frame (21).

9. The extruder head according to claim 8, characterized in that, The extruder head further includes: a first position detection element, a second position detection element, and a third position detection element. The first position detection element is located at the initial position to detect whether the insert plate (3) has moved to the initial position. The second position detection element is located at the first pressing position to detect whether the insert plate (3) has moved to the first pressing position. The third position detection element is located at the second pressing position to detect whether the insert plate (3) has moved to the second pressing position.

10. An extruder, characterized in that, include: An extruder head, wherein the extruder head is the extruder head according to any one of claims 1 to 9.

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