Extrusion die and extruder

Abstract

The application relates to the technical field of extruders, and discloses an extrusion die and an extruder, which are arranged at a discharge port of an extruder. The extrusion die comprises a base, a forming module and a clamping assembly. Specifically, the base is provided with oppositely arranged first and second faces, the first face is suitable for being connected with the extruder, the base is provided with a feeding hole, one end of the feeding hole located at the first face is suitable for being communicated with the discharge port, a connecting piece is arranged on the second face, and a clamping part is arranged on the connecting piece. The forming module is provided with a forming hole and a connecting hole, the forming hole is communicated with one end of the feeding hole located at the second face, the connecting piece penetrates through the connecting hole, and the clamping part is located on one side face of the forming module away from the second face. The clamping assembly is arranged on the one side face of the forming module away from the second face, and the clamping assembly is detachably connected with the clamping part. The extrusion die and the extruder disclosed by the application are used to solve or improve the problem that the extrusion die is complicated to disassemble and assemble.

Description

Technical Field

[0001] This application relates to the field of extruder technology, specifically to extrusion dies and extruders. Background Technology

[0002] Extruders are commonly used equipment in plastic production. Extruders rely on the pressure and shearing force generated by the rotation of the screw to fully plasticize and uniformly mix the material, which is then output from the extrusion die and shaped.

[0003] Extruders can be classified into twin-screw extruders, single-screw extruders, multi-screw extruders, and screwless extruders. An extrusion die is a commonly used mold in plastic extrusion molding, consisting of a cavity and a feed inlet and an extrusion outlet connecting the inner cavity. The heated and molten plastic enters the inner cavity of the extrusion die through the feed inlet and is extruded from the extrusion outlet. The shape and size of the extruded material are determined by the extrusion outlet. Based on the properties of the extruded material and molding requirements, extrusion dies can be classified into strip extrusion dies, round extrusion dies, T-type extrusion dies, and multi-hole extrusion dies, etc.

[0004] In related technologies, extrusion dies are usually fixed to the extruder with bolts, but disassembly and assembly not only require specific tools, but also involve cumbersome operations and inconvenient replacement. Utility Model Content

[0005] This application provides an extrusion die and an extruder to solve or improve the problem of cumbersome disassembly and assembly of extrusion dies.

[0006] In a first aspect, this application provides an extrusion die disposed at the discharge port of an extruder, comprising: The base has a first surface and a second surface arranged opposite to each other. The first surface is adapted to be connected to the extruder. The base has a feed hole. The feed hole is located at one end of the first surface and is adapted to communicate with the discharge port. A connector is provided on the second surface. The connector is provided with a snap-fit ​​part. The molding module has a molding hole and a connecting hole. The molding hole is connected to the end of the feeding hole located on the second surface. The connector passes through the connecting hole, and the snap-fit ​​part is located on the side of the molding module away from the second surface. A snap-fit ​​assembly is disposed on one side of the molding module away from the second surface, and the snap-fit ​​assembly is detachably connected to the snap-fit ​​portion.

[0007] Beneficial effects: The base is connected to the extruder, and the feed hole on the base is connected to the discharge port of the extruder. On the second side of the base, a connector is provided. The connecting hole on the molding module is fitted onto the connector, that is, the connector passes through the connecting hole in the direction from the first side to the second side. The snap-fit ​​part on the connector passes through the connecting hole and is located on the side of the molding module away from the second side. The snap-fit ​​component snaps into the snap-fit ​​part, which can limit the snap-fit ​​part and prevent the snap-fit ​​part from moving in the direction from the second side to the first side. The snap-fit ​​component snaps into the snap-fit ​​part, which can fix the molding module on the base. The feed hole is connected to the molding hole. The material is output from the discharge port of the extruder, passes through the feed hole, and is output from the molding hole.

[0008] When the molding module needs to be replaced, separate the snap-fit ​​assembly from the snap-fit ​​part, and separate the molding module from the connector for easy disassembly.

[0009] In one optional implementation, the snap-fit ​​assembly includes: A telescopic component is disposed on a side of the molding module away from the second surface. The telescopic component has a telescopic part that can telescopically switch between a first position and a second position along the telescopic direction. A snap-fit ​​block is provided on the telescopic part; In the first position, the latching block is latched to the latching part; in the second position, the latching block is moved away from the latching part.

[0010] In one alternative implementation, the telescopic component includes: A fixing block is fixedly connected to one side of the molding module away from the second surface, and the fixing block has a through hole along the telescopic direction; The connecting rod is the telescopic part. The connecting rod passes through the through hole and is slidably connected to the through hole. The connecting rod has a first end and a second end arranged opposite to each other. The first end is connected to the snap-fit ​​block. A limiting handle is rotatably connected to the second end along the axial direction of the connecting rod. The limiting handle can abut against the fixing block to prevent the connecting rod from disengaging from the through hole.

[0011] In one alternative implementation, the telescopic component further includes: An elastic element is disposed between the snap-fit ​​block and the fixed block. One end of the elastic element is connected to the fixed block, and the other end is connected to the snap-fit ​​block. Under the action of the elastic element, the snap-fit ​​block has a tendency to move from the second position to the first position.

[0012] In one optional implementation, the snap-fit ​​assembly further includes: A limiting component is provided on the molding module, and the limiting handle can abut against the limiting component to limit the connecting rod to the second position.

[0013] In one optional embodiment, the snap-fit ​​part is a snap-fit ​​groove, and the opening of the snap-fit ​​groove is arranged opposite to the snap-fit ​​block along the telescopic direction.

[0014] In one alternative embodiment, along the direction from the first surface to the second surface, the end of the connector away from the base is configured as a first inclined surface; Along the direction from the first surface to the second surface, the snap-fit ​​block is provided with a second inclined surface corresponding to the first inclined surface, and the first inclined surface and the second inclined surface can slide and abut against each other.

[0015] In one optional embodiment, the molding module is provided with a groove, the groove is through both ends along the extension direction, the groove opening is arranged opposite to the second surface, and the bottom of the groove is provided with the molding hole. A positioning plate is provided on the edge of the feed hole on the second surface. The positioning plate extends toward the groove, and the outer wall of the positioning plate is in sealing contact with the inner wall of the groove.

[0016] In one optional embodiment, a first sealing ring is further included, which is disposed between the second surface and the molding module; And / or, it also includes a second sealing ring disposed between the inner wall of the groove and the positioning plate.

[0017] Secondly, this application also provides an extruder, comprising: Extrusion die; The machine body has a melting chamber inside, and a stirring screw is rotatably installed inside the melting chamber. The stirring screw is driven by a drive mechanism. The machine body has an inlet and an outlet that communicate with the melting chamber. A die head assembly is connected to the machine body. The die head assembly is provided with a receiving cavity. The die head assembly has an inlet and a outlet that communicate with the receiving cavity. The inlet is connected to the outlet, and the outlet is connected to the feed hole. A filter element is provided on the outlet. The forming module is connected to the die head assembly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an extrusion die and die head assembly in an extruder according to an embodiment of this application; Figure 2 for Figure 1 Exploded view; Figure 3 This is a schematic diagram of the structure of a snap-fit ​​assembly, forming module, and connector in an extrusion die according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a forming module and a snap-fit ​​assembly in an extrusion die according to an embodiment of this application; Figure 5 for Figure 4 The main view; Figure 6 This is a schematic diagram of the structure of the first sealing ring and the second sealing ring in an extrusion die according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 1. Base; 101. Second side; 102. Feed hole; 103. Connector; 104. Snap-fit ​​part; 105. Positioning plate; 106. Second fixing hole; 2. Molding module; 201. Molding hole; 202. Connecting hole; 203. Groove; 3. Snap-fit ​​assembly; 301. Telescopic assembly; 3011. Telescopic part; 3012. Fixing block; 3013. Connecting rod; 3014. Limit handle; 3015. Elastic element; 302. Snap-fit 303. Connecting block; 4. Limiting component; 5. Snap-fit ​​groove; 6. First inclined surface; 7. Second inclined surface; 8. First sealing ring; 9. Second sealing ring; 10. Die head assembly; 11. Receiving cavity; 12. Inlet; 13. Outlet; 14. Filter element; 15. Tank body; 16. First tank wall; 17. Notch; 18. Sealing plate; 19. First fixing hole; 10. First bolt; 11. Handle; X. Telescopic direction. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Extruders are commonly used equipment in plastic production. Extruders rely on the pressure and shearing force generated by the rotation of the screw to fully plasticize and uniformly mix the material, which is then output from the extrusion die and shaped.

[0023] Extruders can be classified into twin-screw extruders, single-screw extruders, multi-screw extruders, and screwless extruders. An extrusion die is a commonly used mold in plastic extrusion molding, consisting of a cavity and a feed inlet and an extrusion outlet connecting the inner cavity. The heated and molten plastic enters the inner cavity of the extrusion die through the feed inlet and is extruded from the extrusion outlet. The shape and size of the extruded material are determined by the extrusion outlet. Based on the properties of the extruded material and molding requirements, extrusion dies can be classified into strip extrusion dies, round extrusion dies, T-type extrusion dies, and multi-hole extrusion dies, etc.

[0024] In related technologies, extrusion dies are typically fixed to the extruder with bolts. However, disassembly and assembly require specific tools, are cumbersome, and replacement is inconvenient. Therefore, this application provides an extrusion die and an extruder to solve or improve the problem of cumbersome disassembly and assembly of extrusion dies.

[0025] The following is combined Figures 1 to 6 This describes an embodiment of the present application.

[0026] According to embodiments of this application, in one aspect, an extrusion die is provided, disposed at the discharge port of an extruder, such as... Figures 1 to 3 As shown, the extrusion die includes a base 1, a forming module 2, and a snap-fit ​​assembly 3. Specifically, the base 1 has a first surface and a second surface 101 arranged opposite to each other. The first surface is adapted to be connected to an extruder. The base 1 has a feed hole 102, and one end of the feed hole 102 on the first surface is adapted to communicate with the discharge port. A connector 103 is provided on the second surface 101, and a snap-fit ​​part 104 is provided on the connector 103. The forming module 2 has a forming hole 201 and a connecting hole 202. The forming hole 201 and the feed hole 102 are connected at one end of the second surface 101. The connector 103 passes through the connecting hole 202, and the snap-fit ​​part 104 is located on the side of the forming module 2 away from the second surface 101. The snap-fit ​​assembly 3 is located on the side of the forming module 2 away from the second surface 101, and the snap-fit ​​assembly 3 and the snap-fit ​​part 104 are detachably connected.

[0027] In this implementation, such as Figures 1 to 3As shown, the base 1 is connected to the extruder, and the feed hole 102 on the base 1 is connected to the discharge port of the extruder. A connector 103 is provided on the second surface 101 of the base 1. The connecting hole 202 opened on the molding module 2 is fitted onto the connector 103. That is, the connector 103 passes through the connecting hole 202 in the direction from the first surface to the second surface 101. The snap-fit ​​part 104 provided on the connector 103 passes through the connecting hole 202 and is located on the side of the molding module 2 away from the second surface 101. The snap-fit ​​component 3 snaps with the snap-fit ​​part 104, which can limit the snap-fit ​​part 104 and prevent the snap-fit ​​part 104 from moving in the direction from the second surface 101 to the first surface. The snap-fit ​​component 3 snaps with the snap-fit ​​part 104, which can fix the molding module 2 on the base 1. The feed hole 102 is connected to the molding hole 201. The material is output from the discharge port of the extruder, passes through the feed hole 102, and is output from the molding hole 201.

[0028] When the molding module 2 needs to be replaced, the snap-fit ​​component 3 is separated from the snap-fit ​​part 104, and the molding module 2 is separated from the connector 103 for easy disassembly.

[0029] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, there are multiple forming holes 201, which are connected to the feed hole 102. Along the direction from the second surface 101 to the first surface, the projections of the multiple forming holes 201 all fall within the projection of the feed hole 102.

[0030] In some embodiments, such as Figure 2 and Figure 4 As shown, along the direction from the second surface 101 to the first surface, the cross-sectional shapes of the two ends of the forming hole 201 can be the same or different. The cross-sectional shape of the end of the forming hole 201 away from the second surface 101 can define the shape of the finished product. It can be a regular shape such as a strip, a circle or a T-shape, or an irregular shape such as a leaf or a wave.

[0031] In some embodiments, such as Figure 3 As shown, the connector 103 can be a connector block, and the snap-fit ​​part 104 can be a snap-fit ​​hole opened on the connector block. The orientation of the snap-fit ​​hole corresponds to that of the snap-fit ​​assembly 3.

[0032] In some embodiments, such as Figure 2 As shown, there are multiple connectors 103, which can be one, two, three, or four, preferably four. Each connector 103 corresponds to a connector hole 202 and each connector 103 corresponds to a snap-fit ​​assembly 3.

[0033] In one embodiment, such as Figure 3As shown, the snap-fit ​​assembly 3 includes a telescopic assembly 301 and a snap-fit ​​block 302. Specifically, the telescopic assembly 301 is disposed on the side of the molding module 2 away from the second surface 101. The telescopic assembly 301 has a telescopic part 3011, which telescopically switches between a first position and a second position along the telescopic direction X. The snap-fit ​​block 302 is disposed on the telescopic part 3011. In the first position, the snap-fit ​​block 302 snaps into the snap-fit ​​part 104, and in the second position, the snap-fit ​​block 302 is away from the snap-fit ​​part 104.

[0034] In this embodiment, the telescopic part 3011 switches between a first position and a second position along the telescopic direction X, so that the snap-fit ​​block 302 snaps into or moves away from the snap-fit ​​part 104, thereby enabling the detachable connection between the molding module 2 and the base 1, facilitating the replacement of the molding module 2, and enabling the extruder to form products of different shapes.

[0035] In some embodiments, such as Figure 3 As shown, the snap-fit ​​block 302 has a right-angled trapezoidal structure.

[0036] In one embodiment, such as Figure 3 As shown, the telescopic assembly 301 includes a fixing block 3012, a connecting rod 3013, and a limiting handle 3014. Specifically, the fixing block 3012 is fixedly connected to the side of the molding module 2 away from the second surface 101, and the fixing block 3012 has a through hole along the telescopic direction X; the connecting rod 3013 is a telescopic part 3011, the connecting rod 3013 passes through the through hole and is slidably connected to the through hole, the connecting rod 3013 has a first end and a second end arranged opposite to each other, the first end is connected to a snap-fit ​​block 302; the limiting handle 3014 is rotatably connected to the second end along the axial direction of the connecting rod 3013, and the limiting handle 3014 can abut against the fixing block 3012 to prevent the connecting rod 3013 from disengaging from the through hole.

[0037] In this implementation, such as Figure 3 As shown, the connecting rod 3013 is slidably connected to the through hole. It should be noted that the connecting rod 3013 can slide along the axial direction of the through hole and also rotate relative to the through hole. The connecting rod 3013 can slide along the axial direction of the through hole, switching between a first position and a second position. During position switching, the limiting handle 3014 prevents the second end of the connecting rod 3013 from sliding away from the fixing block 3012 along the axial direction of the through hole, and the limiting handle 3014 also facilitates the movement of the connecting rod 3013. The locking block 302 prevents the first end of the connecting rod 3013 from sliding away from the fixing block 3012 along the axial direction of the through hole.

[0038] The limit handle 3014 is rotatably connected to the second end along the axial direction of the connecting rod 3013, which allows the worker to easily drive the connecting rod 3013 to move at multiple angles via the limit handle 3014.

[0039] In one embodiment, such as Figure 3 As shown, the telescopic assembly 301 also includes an elastic element 3015, which is disposed between the snap-fit ​​block 302 and the fixed block 3012. One end of the elastic element 3015 is connected to the fixed block 3012, and the other end is connected to the snap-fit ​​block 302. Under the action of the elastic element 3015, the snap-fit ​​block 302 has a tendency to move from the second position to the first position.

[0040] In this implementation, such as Figure 3 As shown, the connector 103 passes through the connecting hole 202. Under the action of the elastic member 3015, the connecting rod 3013 is pushed to the first position, so that the snap-fit ​​block 302 and the snap-fit ​​part 104 snap together, fixing the molding module 2 on the base 1. Under the action of the elastic member 3015, there is always pressure between the snap-fit ​​block 302 and the snap-fit ​​part 104, which can improve the stability of the connection between the snap-fit ​​block 302 and the snap-fit ​​part 104.

[0041] In some embodiments, the elastic element 3015 is a spring, a spring sheet, or an air bladder, preferably a spring. The spring is sleeved on the connecting rod 3013, with one end connected to the fixing block 3012 and the other end connected to the locking block 302. The spring is always in a compressed state, and the limiting handle 3014 abuts against the fixing block 3012, which can resist the spring force and prevent the spring from dislodging the connecting rod 3013 from the through hole.

[0042] In one embodiment, such as Figure 3 As shown, the snap-fit ​​assembly 3 also includes a limiting member 303, which is disposed on the molding module 2. The limiting member 303 moves away from the fixing block 3012 along the extension direction X. The limiting handle 3014 can abut against the limiting member 303, thereby limiting the connecting rod 3013 to the second position.

[0043] In this embodiment, when disassembling the molding module 2, the connecting rod 3013 is moved from the first position to the second position by the limiting handle 3014. At this time, the locking block 302 is far away from the locking part 104, and the molding module 2 can be detached from the base 1. Then, the limiting handle 3014 can be rotated to abut against the limiting member 303, which can prevent the connecting rod 3013 from returning to the first position under the action of the spring. After the connecting rod 3013 returns to the first position, the locking block 302 will block the connecting hole 202. Thus, when installing other molding modules 2, the locking block 302 will prevent the connecting member 103 from passing through the connecting hole 202. Therefore, after the connecting rod 3013 moves to the second position, the limiting handle 3014 abuts against the limiting member 303, which facilitates the installation of the molding module 2.

[0044] In some embodiments, such as Figure 3As shown, the limiting member 303 can be a limiting plate, a limiting rod, or a limiting protrusion, as long as it can abut against the limiting handle 3014 and restrict the connecting rod 3013 from moving from the second position to the first position.

[0045] In some embodiments, such as Figure 3 As shown, the edge of the limiting plate is designed with a limiting protrusion 3031, which can limit the rotation of the limiting handle 3014 when it is attached to the limiting plate.

[0046] In one embodiment, such as Figure 3 As shown, the snap-fit ​​part 104 is a snap-fit ​​groove 4, and the groove opening of the snap-fit ​​groove 4 is arranged opposite to the snap-fit ​​block 302 along the telescopic direction X.

[0047] In this embodiment, the structure of the connecting groove is simple. The opening of the connecting groove is arranged facing the telescopic direction X. The snap-fit ​​part 104 can be inserted into the snap-fit ​​groove 4. The snap-fit ​​part 104 abuts against the inner wall of the snap-fit ​​groove 4, which can restrict the axial movement of the snap-fit ​​groove 4 along the connecting hole 202, that is, restrict the movement of the snap-fit ​​groove 4 along the direction from the second surface 101 to the first surface, and fix the molding module 2 on the base 1.

[0048] In one embodiment, such as Figure 3 As shown, along the direction from the first surface to the second surface 101, the end of the connector 103 away from the base 1 is set as the first inclined surface 5; along the direction from the first surface to the second surface 101, the snap-fit ​​block 302 is provided with a second inclined surface 6 corresponding to the first inclined surface 5, and the first inclined surface 5 and the second inclined surface 6 can slide and abut against each other.

[0049] In this embodiment, when the limiting handle 3014 is not abutting against the limiting member 303, during the process of the connector 103 passing through the connecting hole 202, the first inclined surface 5 and the second inclined surface 6 slide against each other, which can drive the snap-fit ​​block 302 to move closer to the fixing block 3012 along the extension direction X, that is, the snap-fit ​​block 302 moves away from the connecting hole 202. When the snap-fit ​​groove 4 on the connector 103 passes through the connecting hole 202, the snap-fit ​​block 302 corresponds to the groove of the snap-fit ​​groove 4. Under the action of the spring, the snap-fit ​​block 302 is inserted into the snap-fit ​​groove 4, which can quickly install the molding module 2 and improve the installation efficiency. It is not necessary to align the snap-fit ​​block 302 with the snap-fit ​​groove 4 and then rotate the limiting handle 3014 to move it away from the limiting member 303 before inserting the snap-fit ​​block 302 into the snap-fit ​​groove 4.

[0050] In one embodiment, such as Figure 4As shown, the molding module 2 is provided with a groove 203, which is through at both ends along the extension direction X. The groove opening of the groove 203 is arranged opposite to the second surface 101, and the bottom of the groove 203 is provided with a molding hole 201. The feed hole 102 is located on the edge of the second surface 101 and is provided with a positioning plate 105. The positioning plate 105 extends toward the groove 203, and the outer wall of the positioning plate 105 is sealed and abutted against the inner wall of the groove 203.

[0051] In this embodiment, the outer wall of the positioning plate 105 abuts against the inner wall of the groove 203, which can position the molding module 2 on the base 1 during installation, improving installation efficiency. Furthermore, the abutment between the outer wall of the positioning plate 105 and the inner wall of the groove 203 improves the sealing effect between the feed hole 102 and the molding hole 201.

[0052] In one embodiment, such as Figure 2 , Figure 5 and Figure 6 As shown, it also includes a first sealing ring 7, which is disposed between the second surface 101 and the molding module 2; And / or, it also includes a second sealing ring 8, which is disposed between the inner wall of the groove 203 and the positioning plate 105.

[0053] In this embodiment, the first sealing ring 7 and the second sealing ring 8 further improve the sealing effect between the feed hole 102 and the forming hole 201, avoiding plastic overflow and waste.

[0054] In some embodiments, a first sealing groove is provided on the second surface 101 and / or the molding module 2, and a first sealing ring 7 is disposed in the first sealing groove.

[0055] In some embodiments, a second sealing groove is provided on the positioning plate 105 and / or the molding module 2, and a second sealing ring 8 is disposed in the second sealing groove.

[0056] According to an embodiment of this application, another aspect provides an extruder, including an extrusion die, a body, and a die head assembly 9, specifically, as shown in... Figure 2 As shown, the machine body has a melting chamber inside, and a stirring screw is rotatably installed inside the melting chamber. The stirring screw is driven by a drive mechanism. The machine body has an inlet and an outlet that communicate with the melting chamber. The die head assembly 9 is connected to the machine body. The die head assembly 9 has a receiving cavity 901. The die head assembly 9 has an inlet 902 and a outlet 903 that communicate with the receiving cavity 901. The inlet 902 communicates with the outlet, and the outlet 903 communicates with the inlet hole 102. A filter element 904 is installed on the outlet 903. The molding module 2 is connected to the die head assembly 9.

[0057] In some embodiments, such as Figure 2As shown, the die head assembly 9 includes a groove 905 and a sealing plate 906. The groove 905 has a first groove wall 9051 and a second groove wall arranged opposite to each other. The first groove wall 9051 has an inlet 902, and the second groove wall has a notch 9052. The sealing plate 906 seals the notch 9052 and the groove opening of the groove 905. The interior of the sealing plate 906 and the groove 905 forms a receiving cavity 901. The sealing plate 906 has a discharge port 903. The sealing plate 906 has four first fixing holes 907. The sealing plate 906 is fixedly connected to the groove 905 by four first bolts 908 and the four first fixing holes 907.

[0058] A handle 909 is provided on one side of the sealing plate 906.

[0059] In some embodiments, the filter element 904 is a screen.

[0060] It should be noted that the extruder includes the extrusion die provided in the embodiments of this application, and therefore includes all the advantages of the extrusion die mentioned above, so it will not be repeated here.

[0061] The following is an example, combined with Figures 1 to 6 A comprehensive explanation of all the above-mentioned plans is provided.

[0062] The base 1 is a rectangular plate, and a second fixing hole 106 is provided at each of the four corners of the rectangular plate. Four first bolts 908 pass through the four second fixing holes 106 and the four first fixing holes 907 respectively to fix the base 1 to the sealing plate 906 and to fix the sealing plate 906 to the groove 905.

[0063] Four connecting blocks are provided on the second side 101 of the base 1. The molding module 2 has four connecting holes 202 corresponding to the four connecting blocks. The four connecting blocks pass through the four connecting holes 202. Each of the four connecting blocks is provided with a snap-fit ​​groove 4. Each snap-fit ​​groove 4 is provided with a snap-fit ​​component 3. The snap-fit ​​block 302 of the snap-fit ​​component 3 is detachably connected to the snap-fit ​​groove 4.

[0064] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended application.

Claims

1. An extrusion die, disposed at the discharge port of an extruder, characterized in that, include: The base (1) has a first surface and a second surface (101) arranged opposite to each other. The first surface is adapted to be connected to the extruder. The base (1) is provided with a feed hole (102). The feed hole (102) is located at one end of the first surface and is adapted to communicate with the discharge port. A connector (103) is provided on the second surface (101). A snap-fit ​​part (104) is provided on the connector (103). The molding module (2) has a molding hole (201) and a connecting hole (202). The molding hole (201) is connected to the feed hole (102) at one end of the second surface (101). The connector (103) passes through the connecting hole (202), and the snap-fit ​​part (104) is located on the side of the molding module (2) away from the second surface (101). A snap-fit ​​assembly (3) is disposed on a side of the molding module (2) away from the second surface (101), and the snap-fit ​​assembly (3) is detachably connected to the snap-fit ​​part (104).

2. The extrusion die according to claim 1, characterized in that, The snap-fit ​​assembly (3) includes: A telescopic component (301) is disposed on a side of the molding module (2) away from the second surface (101). The telescopic component (301) has a telescopic part (3011) that telescopically switches between a first position and a second position along the telescopic direction (X). A snap-fit ​​block (302) is provided on the telescopic part (3011); In the first position, the latching block (302) is latched to the latching part (104), and in the second position, the latching block (302) is moved away from the latching part (104).

3. The extrusion die according to claim 2, characterized in that, The telescopic assembly (301) includes: A fixing block (3012) is fixedly connected to one side of the molding module (2) away from the second surface (101), and the fixing block (3012) has a through hole along the telescopic direction (X); The connecting rod (3013) is the telescopic part (3011). The connecting rod (3013) passes through the through hole and is slidably connected to the through hole. The connecting rod (3013) has a first end and a second end arranged opposite to each other. The first end is connected to the snap-fit ​​block (302). A limiting handle (3014) is rotatably connected to the second end along the axial direction of the connecting rod (3013). The limiting handle (3014) can abut against the fixing block (3012) to prevent the connecting rod (3013) from disengaging from the through hole.

4. The extrusion die according to claim 3, characterized in that, The telescopic assembly (301) also includes: An elastic element (3015) is disposed between the snap-fit ​​block (302) and the fixed block (3012). One end of the elastic element (3015) is connected to the fixed block (3012), and the other end is connected to the snap-fit ​​block (302). Under the action of the elastic element (3015), the snap-fit ​​block (302) has a tendency to move from the second position to the first position.

5. The extrusion die according to claim 3, characterized in that, The snap-fit ​​assembly (3) further includes: A limiting member (303) is provided on the molding module (2), and the limiting handle (3014) can abut against the limiting member (303) to limit the connecting rod (3013) in the second position.

6. The extrusion die according to claim 3, characterized in that, The snap-fit ​​part (104) is a snap-fit ​​groove (4), and along the telescopic direction (X), the opening of the snap-fit ​​groove (4) is arranged opposite to the snap-fit ​​block (302).

7. The extrusion die according to claim 6, characterized in that, Along the direction from the first surface to the second surface (101), the end of the connector (103) away from the base (1) is configured as a first inclined surface (5); Along the direction from the first surface to the second surface (101), the snap-fit ​​block (302) is provided with a second inclined surface (6) corresponding to the first inclined surface (5), and the first inclined surface (5) and the second inclined surface (6) can slide and abut against each other.

8. The extrusion die according to claim 2, characterized in that, The molding module (2) is provided with a groove (203), the groove (203) is through at both ends along the extension direction (X), the groove opening of the groove (203) is arranged opposite to the second surface (101), and the bottom of the groove (203) is provided with the molding hole (201). The feed hole (102) is provided with a positioning plate (105) on the edge of the second surface (101). The positioning plate (105) extends toward the groove (203), and the outer wall of the positioning plate (105) is sealed and abutted against the inner wall of the groove (203).

9. The extrusion die according to claim 8, characterized in that, It also includes a first sealing ring (7), which is disposed between the second surface (101) and the molding module (2); And / or, it also includes a second sealing ring (8), which is disposed between the inner wall of the groove (203) and the positioning plate (105).

10. An extruder, characterized in that, include: The extrusion die according to any one of claims 1 to 9; The machine body has a melting chamber inside, and a stirring screw is rotatably installed inside the melting chamber. The stirring screw is driven by a drive mechanism. The machine body has an inlet and an outlet that communicate with the melting chamber. A die head assembly (9) is connected to the machine body. The die head assembly (9) is provided with a receiving cavity (901). The die head assembly (9) is provided with an inlet (902) and a discharge port (903) that communicate with the receiving cavity (901). The inlet (902) communicates with the discharge port. The discharge port (903) communicates with the feed hole (102). A filter element (904) is provided on the discharge port (903). The forming module (2) is connected to the die head assembly (9).

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