Quick connecting mechanism for extruder die body

Abstract

The utility model relates to the technical field of extrusion dies, in particular to a quick connecting mechanism for an extruder die body, which comprises a die body connecting section arranged on the extruder die body, a main machine connecting section arranged on a main machine and a connecting component, a positioning block is arranged on the die body connecting section, a positioning groove is arranged on the main machine connecting section, and the connecting component is arranged on the main machine connecting section. The positioning block is installed in the positioning groove, a detachable connecting assembly is connected between the die body connecting section and the main machine connecting section, the central axis of the extruder die body coincides with the central axis of the die body connecting section, and when the die body is installed, the extruder die body is hoisted and moved. The positioning block on the die body connecting section is aligned with the positioning groove in the main machine connecting section, the die body connecting section continues to be moved, the positioning block is clamped into the positioning groove, the central axis of the extruder die body coincides with the central axis of the main machine connecting section, and die positioning is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion dies, and more specifically to a quick connection mechanism for an extruder die body. Background Art

[0002] Plastic pipes and profiles are primarily produced by extrusion molding. Products of different specifications and sizes require specialized molds. Therefore, in actual production, to meet the demands of different customer orders, the production department needs to frequently replace molds to switch between different products. However, the extruder mold is heavy and bulky, and generally requires crane transportation. Furthermore, during the switching process, it needs to be fully aligned with the extruder main unit, and then 6-8 sets of bolts must be tightened. This operation is complex, time-consuming, and labor-intensive.

[0003] Patent CN220784797U discloses a quick die-changing device for a vertical extruder. The second insert is rotated by a J-rod to drive the threaded sleeve and the limit block to move, thereby controlling the contact between the limit block and the limit ring. During installation, multiple limit blocks are passed through the limit opening, and then the limit ring is rotated so that the limit opening limits the multiple limit blocks. Then, the threaded sleeve is rotated so that the limit ring pulls the extrusion die head to the left, thereby achieving the effect of quickly docking and installing the tube body and the extrusion die head, thereby improving the efficiency of replacing the extrusion die head. However, in the above scheme, in the process of the limit block passing through the limit hole, there is a lack of a positioning device for the tube body and the extrusion die head, which requires time and effort for accurate installation. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiency of the prior art in that there is a lack of a positioning device, and to provide a quick connection mechanism for an extruder die body, which utilizes the die structure to achieve precise positioning.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] Provided is an extruder die quick connection mechanism, comprising a die connecting section provided on the extruder die, a mainframe connecting section provided on the mainframe, and a connection assembly, wherein the die connecting section is provided with a positioning block, the mainframe connecting section is provided with a positioning groove, the positioning block is installed in the positioning groove, a detachable connection assembly is connected between the die connecting section and the mainframe connecting section, and the central axes of the extruder die and the die connecting section coincide with each other.

[0007] The utility model discloses a quick connection mechanism for an extruder die. When installing the die, the extruder die is lifted and moved so that the positioning block on the die connection section is aligned with the positioning groove on the main machine connection section. The die connection section is further moved so that the positioning block is engaged in the positioning groove, so that the central axes of the extruder die and the main machine connection section coincide with each other, thus realizing mold positioning. A connection assembly is installed between the die connection section and the main machine connection section to complete the connection work between the extruder die and the main machine.

[0008] Furthermore, the connection assembly includes a first screw hole, a second screw hole, and a bolt. The first screw hole is provided on the die body connection section, and the second screw hole is provided on the mainframe connection section. The axes of the first screw hole and the second screw hole coincide with each other, and the bolt passes through the first and second screw holes. After the positioning block is engaged with the positioning slot to complete mold positioning, the bolt is screwed into the first and second screw holes to connect the extruder die body to the mainframe connection section. The use of bolts to install the die has a simple structure, is easy to operate, and facilitates mold replacement.

[0009] Furthermore, two positioning blocks and two positioning slots are provided, symmetrically distributed on the die body connecting section, and of equal height. The two positioning blocks and two positioning slots are symmetrically distributed on the main unit connecting section, and of equal height. Providing two positioning blocks and two positioning slots allows for more precise positioning. The symmetrical distribution of the two positioning blocks and two positioning slots ensures a more balanced horizontal force on the extruder die during positioning, reducing operational difficulty.

[0010] Furthermore, the positioning block is provided on the upper half of the die body connecting section, and the positioning slot is provided on the upper half of the mainframe connecting section and opens upward. By moving the extruder die body above the mainframe connecting section, aligning the positioning block with the positioning slot, and lowering the extruder die body, the positioning block at the top of the die body connecting section can be engaged with the positioning slot at the top of the mainframe connecting section, thereby utilizing the gravity of the extruder die body to achieve more labor-saving positioning.

[0011] Furthermore, the top width of the positioning block is greater than the bottom width of the positioning block, and the width of the positioning slot opening is greater than the width of the bottom width of the positioning slot. Both the positioning block and the positioning slot are wide at the top and narrow at the bottom, making it easier for the bottom of the positioning block to enter the positioning slot, reducing the precision requirements when moving the extruder die and improving positioning efficiency.

[0012] Furthermore, a connecting section plane is provided on the surface of the die body connecting section opposite the mainframe connecting section, a protrusion extending toward the mainframe connecting section is provided on the top of the connecting section plane, and the top of the positioning block is fixedly mounted on the protrusion. The positioning block is provided with a first side surface, an inner bevel, and a second side surface connected in sequence, the inner bevel facing the front of the connecting section plane, and the positioning groove is provided with a first positioning side surface, an inner side surface, and a second positioning side surface connected in sequence, the inner side surface facing away from the extruder die body, the first side surface contacts the first positioning side surface, the inner bevel contacts the inner side surface, and the second side surface contacts the second positioning side surface. The protrusion and positioning block form a claw-shaped structure, with the inner bevel contacting the inner side surface, so that the positioning block and positioning groove function to limit the axial relative movement between the extruder die body and the mainframe connecting section.

[0013] Furthermore, the first side surface, the second side surface, and the second positioning side surface are all perpendicular to the plane of the connecting section, and the angle between the second positioning side surface and the vertical direction is greater than 3° and less than 10°. The second positioning side surface is inclined to make it easier for the positioning block to enter the positioning groove, thereby improving positioning efficiency.

[0014] Furthermore, the inner side surface is parallel to the plane of the connecting section, and the angle between the first positioning side surface and the inner side surface is greater than 100 degrees and less than 110 degrees. In the process of lifting the extruder die body, the first side surface and the first positioning side surface are prevented from rubbing against each other, thereby achieving air avoidance.

[0015] Furthermore, the angle between the inner bevel and the inner side surface is greater than 10° and less than 20°. Due to the angle between the inner bevel and the inner side surface, the intersection of the inner bevel and the inner side surface forms a fulcrum. During disassembly, the extruder die body is slightly lifted away from the main machine connection section, and the inner bevel can be rotated slightly around the fulcrum to loosen the die and facilitate die replacement.

[0016] Furthermore, a sealing bevel is provided on the surface of the die body connecting section opposite the mainframe connecting section, and a sealing concave surface is provided on the mainframe connecting section to mate with the sealing bevel. The angle between the sealing bevel and the plane of the connecting section is greater than 1° and less than 5°, and the maximum axial distance between the sealing bevel and the plane of the connecting section is less than the length of the protrusion along the central axis of the extruder die body. Through the beveled connection, the contact point between the positioning block and the positioning groove can be used as a fulcrum, and the weight of the mold and the fixing effect of the connecting assembly on the die body connecting section and the mainframe connecting section can be used to form a lever effect, so that the sealing bevel and the sealing concave surface are tightly pressed together, thereby improving the sealing effect.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model discloses a quick connection mechanism for an extruder mold: 1. The mold positioning is achieved by cooperating with the positioning block on the mold connecting section and the positioning groove on the main machine connecting section; 2. The extruder mold is slightly lifted away from the main machine connecting section, and the inner bevel can be slightly rotated around the contact position of the inner bevel on the inner side surface to loosen the mold for easy replacement; 3. The contact position of the positioning block and the positioning groove can be used as a fulcrum, and the weight of the mold and the fixing effect of the connecting assembly on the mold connecting section and the main machine connecting section can be utilized to form a lever effect, so that the sealing bevel and the sealing concave surface are tightly pressed together, thereby improving the sealing effect; 4. The angle between the first positioning side surface and the inner side surface is an obtuse angle, which can prevent the first side surface from scratching against the first positioning side surface when the extruder mold is lifted, thereby achieving air avoidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic structural diagram of the extruder die quick connection mechanism from a first perspective of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the extruder die quick connection mechanism from a second perspective of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the die body connection section of the extruder die body quick connection mechanism of the present invention from a first perspective;

[0022] Figure 4 This is a schematic structural diagram of the die body connection section of the extruder die body quick connection mechanism from a second perspective;

[0023] Figure 5 This is a schematic structural diagram from a first perspective of the mainframe connection section of the extruder die quick connection mechanism of the present invention;

[0024] Figure 6 This is a schematic structural diagram from a second perspective of the mainframe connection section of the extruder die quick connection mechanism of the present invention;

[0025] Figure 7 This is a schematic structural diagram of the main machine connection section of the extruder die quick connection mechanism of the utility model from a third perspective;

[0026] In the accompanying drawings: 1. Extruder mold body; 2. Mold body connecting section; 21. Positioning block; 211. First side surface; 212. Inner bevel; 213. Second side surface; 22. Connecting section plane; 221. First screw hole; 222. Protrusion; 23. Sealing bevel; 3. Main machine connecting section; 31. Positioning groove; 311. First positioning side surface; 312; Inner side surface; 313. Second positioning side surface; 32. Sealing concave surface; 33. Second screw hole; 4. Connecting assembly; 41. Bolt. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Example 1

[0030] like Figures 1 to 7 The figure shows the first embodiment of the extruder die quick connection mechanism of the present invention, which includes a connecting component 4, a die connecting section 2 provided on the extruder die 1, and a mainframe connecting section 3 provided on the mainframe. The die connecting section 2 is provided with a positioning block 21, and the mainframe connecting section 3 is provided with a positioning groove 31. The positioning block 21 is installed in the positioning groove 31. A detachable connecting component 4 is connected between the die connecting section 2 and the mainframe connecting section 3, and the central axes of the extruder die 1 and the die connecting section 2 coincide.

[0031] The extruder die quick connection mechanism of the utility model is as follows: when installing the die, the extruder die 1 is lifted and moved so that the positioning block 21 on the die connecting section 2 is aligned with the positioning groove 31 on the main machine connecting section 3, and the die connecting section 2 is continued to be moved so that the positioning block 21 is stuck in the positioning groove 31, so that the central axis of the extruder die 1 and the main machine connecting section 3 coincide with each other, thereby realizing mold positioning, and the connecting assembly 4 is installed between the die connecting section 2 and the main machine connecting section 3 to complete the connection work of the extruder die 1 and the main machine.

[0032] The connecting assembly 4 includes a first screw hole 221, a second screw hole 33 and a bolt 41. The first screw hole 221 is provided on the die body connecting section 2, and the second screw hole 33 is provided on the main machine connecting section 3. The axes of the first screw hole 221 and the second screw hole 33 coincide with each other, and the bolt 41 passes through the first screw hole 221 and the second screw hole 33. After the positioning block 21 is inserted into the positioning groove 31 to complete the mold positioning, the bolt 41 is screwed into the first screw hole 221 and the second screw hole 33 to achieve the connection between the extruder die 1 and the main machine connecting section 3; the mold is installed by the bolt 41, which has a simple structure, is easy to operate, and is convenient for replacing the die body, such as Figure 2 shown.

[0033] Two positioning blocks 21 and two positioning slots 31 are provided. The two positioning blocks 21 are symmetrically distributed on the die body connecting section 2 and are of equal height. The two positioning slots 31 are symmetrically distributed on the mainframe connecting section 3 and are of equal height. Providing two positioning blocks 21 and two positioning slots 31 can make positioning more precise. The symmetrical distribution of the two positioning blocks 21 and two positioning slots 31 can ensure a more balanced horizontal force on the extruder die body 1 during positioning, reducing operational difficulty.

[0034] like Figure 1 As shown, the positioning block 21 is located in the upper half of the die connecting section 2, and the positioning slot 31 is located in the upper half of the mainframe connecting section 3, with its opening facing upward. The extruder die 1 is moved above the mainframe connecting section 3, aligning the positioning block 21 with the positioning slot 31. The extruder die 1 is then lowered, allowing the positioning block 21 at the top of the die connecting section 2 to engage with the positioning slot 31 at the top of the mainframe connecting section 3. This allows the extruder die 1 to leverage its gravity, making positioning more labor-efficient.

[0035] like Figure 4 As shown, the top width of the positioning block 21 is greater than the bottom width of the positioning block 21; Figure 6 and Figure 7 As shown, the width of the opening of the positioning groove 31 is greater than the width of the bottom of the positioning groove 31. The positioning block 21 and the positioning groove 31 are both wide at the top and narrow at the bottom, making it easier for the bottom of the positioning block 21 to enter the positioning groove 31, reducing the accuracy requirements when moving the extruder die 1 and improving positioning efficiency.

[0036] The working principle of the extruder die body 1 connecting mechanism of this embodiment is as follows: when installing the die body, the extruder die body 1 is lifted and moved, and after the die body connecting section 2 is moved above the main machine connecting section 3, the position of the die body connecting section 2 is adjusted so that the positioning block 21 is roughly aligned with the positioning groove 31, and the die body connecting section 2 is slowly lowered. The narrower bottom of the positioning block 21 extends into the wider top opening of the positioning groove 31 and is not easily blocked. As the die body connecting section 2 descends, the positioning block 21 is completely stuck in the positioning groove 31, so that the central axis of the extruder die body 1 and the main machine connecting section 3 coincide, thereby realizing mold positioning, and the bolt 41 is screwed into the first screw hole 221 and the second screw hole 33 to realize the connection between the extruder die body 1 and the main machine connecting section 3.

[0037] Example 2

[0038] The present embodiment is the second embodiment of the extruder die quick connection mechanism of the present utility model. The present embodiment is similar to the first embodiment, except that a connecting section plane 22 is provided on the surface opposite to the main machine connecting section 3 of the die body connecting section 2, and a protrusion 222 extending toward the main machine connecting section 3 is provided on the top of the connecting section plane 22. The top of the positioning block 21 is fixedly provided on the protrusion 222. The positioning block 21 is a wedge-shaped block, and the positioning groove 31 is a wedge-shaped groove. The positioning block 21 is provided with a first side surface 211, an inner bevel 212, and a second side surface 213 connected in sequence. The inner bevel 212 is opposite to the front of the connecting section plane 22. The positioning groove 31 is provided with a first positioning side surface 311, an inner side surface 312, and a second positioning side surface 313 connected in sequence. The inner side surface 312 faces the side away from the extruder die 1. The first side surface 211 contacts the first positioning side surface 311, the inner bevel 212 contacts the inner side surface 312, and the second side surface 213 contacts the second positioning side surface 313. The protrusion 222 and the positioning block 21 form a claw-shaped structure, and the inner inclined surface 212 contacts the inner side surface 312, so that the positioning block 21 and the positioning groove 31 play a role in limiting the axial relative movement between the extruder die body 1 and the main machine connecting section 3.

[0039] The first side surface 211, the second side surface 213, and the second positioning side surface 313 are all perpendicular to the connecting section plane 22. The angle between the second positioning side surface 313 and the vertical direction is greater than 3° and less than 10°. The second positioning side surface 313 is tilted to make it easier for the positioning block 21 to enter the positioning groove 31, thereby improving positioning efficiency.

[0040] In this embodiment, the angle between the second positioning side surface 313 and the vertical direction is 15°, and the angle between the first positioning side surface 311 and the vertical direction is 3-10°, and in this embodiment it is 5°. The inclination directions of the first positioning side surface 311 and the second positioning side surface 313 are opposite, so that the positioning groove 31 is wide at the top and narrow at the bottom, and the positioning block 21 is easier to enter the positioning groove 31; the inclination angle of the first positioning side surface 311 is smaller than the inclination angle of the second positioning side surface 313, so that the resistance encountered by the positioning block 21 when it detaches from the positioning groove 31 from the first positioning side surface 311 is greater. After the positioning block 21 is stuck in the positioning groove 31, the two positioning blocks 21 are both located between the two first positioning side surfaces 311, which can reduce the risk of the extruder die 1 detaching from the positioning groove 31 in a direction perpendicular to the central axis of the extruder die 1. Figure 6 and Figure 7 shown.

[0041] The working principle of the extruder die body 1 connecting mechanism of this embodiment is as follows: when installing the die body, the extruder die body 1 is lifted and moved, and the die body connecting section 2 is moved to the top of the main machine connecting section 3, and the position of the die body connecting section 2 is adjusted so that the positioning block 21 is roughly aligned with the positioning groove 31, and the die body connecting section 2 is slowly lowered, and the bottom of the positioning block 21 extends into the positioning groove 31. Since the first positioning side surface 311 and the second positioning side surface 313 are inclined, the positioning block 21 will not be blocked after contacting the first positioning side surface 311 or the second positioning side surface 313, but will be moved along the first positioning side surface 311. 311 or the second positioning side 313 continues to move toward the bottom of the positioning groove 31, so that the extruder die 1 gradually moves to the accurate position; after positioning is completed, the claw-shaped structure composed of the protrusion 222 and the positioning block 21 is stuck on the main connecting section 3, preventing the die connecting section 2 from axially separating from the main connecting section 3, and the first positioning side 311 with a smaller inclination relative to the vertical direction prevents the two positioning blocks 21 located between the two first positioning side surfaces 311 from separating from the positioning groove 31 in a direction perpendicular to the central axis of the extruder die 1, thereby realizing horizontal limitation of the extruder die 1.

[0042] Example 3

[0043] This embodiment is the third embodiment of the extruder die quick connection mechanism of the present invention. This embodiment is similar to the second embodiment, except that the angle between the inner bevel 212 and the inner side surface 312 is greater than 10° and less than 20°. Because the angle between the inner bevel 212 and the inner side surface 312 is greater than 10° and less than 20°, the intersection of the inner bevel 212 and the inner side surface 312 forms a fulcrum. During disassembly, the extruder die 1 is slightly lifted away from the main machine connection section 3, and the inner bevel 212 can be rotated slightly about the fulcrum, loosening the die and facilitating die replacement.

[0044] A sealing slope 23 is also provided on the surface of the mold body connecting section 2 opposite to the main body connecting section 3. Figure 3 As shown, the main connecting section 3 is provided with a sealing concave surface 32 that cooperates with the sealing inclined surface 23. Figure 5 As shown, the angle between the sealing bevel 23 and the connecting section plane 22 is 1° and less than 5°, and the maximum axial distance between the sealing bevel 23 and the connecting section plane 22 is less than the length of the protrusion 222 in the direction of the central axis of the extruder die 1. Through the beveled connection, the contact point between the positioning block 21 and the positioning groove 31 can be used as a fulcrum, and the mold's own weight and the locking force of the bolt 41 can be used to form a lever effect, so that the sealing bevel 23 and the sealing concave surface 32 are tightly pressed together, improving the sealing effect. The distance between the sealing bevel 23 and the connecting section plane 22 is less than the length of the protrusion 222, which can prevent the extruder die 1 from being blocked during the positioning process.

[0045] The inner side surface 312 is parallel to the connecting section plane 22, and the angle between the first positioning side surface 311 and the inner side surface 312 is greater than 100 degrees and less than 110 degrees. When the extruder die body 1 is lifted, the first side surface 211 and the first positioning side surface 311 are scraped to avoid air. Figure 6 shown.

[0046] In this embodiment, the angle between the inner inclined surface 212 and the inner side surface 312 is 15°, the angle between the sealing inclined surface 23 and the connecting section plane 22 is 1.5°, and the angle between the first positioning side surface 311 and the inner side surface 312 is 105°.

[0047] The working principle of the extruder die body connection mechanism in this embodiment is as follows: after the positioning block 21 is inserted into the positioning groove 31 to complete the positioning, the contact position of the positioning block 21 and the positioning groove 31 becomes a fulcrum, and the lever principle is used to convert the gravity of the mold into pressure of the sealing inclined surface 23 on the sealing concave surface 32, so that the sealing inclined surface 23 and the sealing concave surface 32 are tightly pressed together, and the bolt 41 is screwed into the first screw hole 221 and the second screw hole 33 to complete the mold installation; when the mold needs to be replaced, the bolt 41 is unscrewed, and the extruder die body 1 is lifted away from the main machine connection section 3 side, usually the mold core is lifted, and the inner inclined surface 212 rotates slightly around the fulcrum, the positioning block 21 is disengaged from the positioning groove 31, and the extruder die body 1 is removed. Since the angle between the first positioning side surface 311 and the inner side surface 312 is an obtuse angle, the first side surface 211 and the first positioning side surface 311 are not easily scratched, thereby preventing damage to the mold during the replacement process.

[0048] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A quick connection mechanism for an extruder die, characterized in that: The invention comprises a die connecting section (2) provided on an extruder die (1), a mainframe connecting section (3) provided on a mainframe, and a connecting assembly (4); the die connecting section (2) is provided with a positioning block (21); the mainframe connecting section (3) is provided with a positioning groove (31); the positioning block (21) is installed in the positioning groove (31); a detachable connecting assembly (4) is connected between the die connecting section (2) and the mainframe connecting section (3); and the central axes of the extruder die (1) and the die connecting section (2) coincide with each other.

2. The extruder die quick connection mechanism according to claim 1, characterized in that: The connecting assembly (4) includes a first screw hole (221), a second screw hole (33) and a bolt (41), wherein the first screw hole (221) is provided on the mold body connecting section (2), and the second screw hole (33) is provided on the main machine connecting section (3), the axes of the first screw hole (221) and the second screw hole (33) coincide with each other, and the bolt (41) passes through the first screw hole (221) and the second screw hole (33).

3. The extruder die quick connection mechanism according to claim 1, characterized in that: Two of the positioning blocks (21) and two of the positioning grooves (31) are provided. The two positioning blocks (21) are symmetrically distributed on the mold body connecting section (2). The two positioning blocks (21) have the same height. The two positioning grooves (31) are symmetrically distributed on the host connecting section (3). The two positioning grooves (31) have the same height.

4. The extruder die quick connection mechanism according to claim 1, characterized in that: The positioning block (21) is provided at the upper half of the mold body connecting section (2), and the positioning groove (31) is provided at the upper half of the main machine connecting section (3) and opens upward.

5. The extruder die quick connection mechanism according to claim 4, characterized in that: The top width of the positioning block (21) is greater than the bottom width of the positioning block (21), and the opening width of the positioning groove (31) is greater than the bottom width of the positioning groove (31).

6. The extruder die quick connection mechanism according to claim 5, characterized in that: A connecting section plane (22) is provided on the surface of the die body connecting section (2) opposite to the main machine connecting section (3); a protrusion (222) extending toward the main machine connecting section (3) is provided on the top of the connecting section plane (22); the top of the positioning block (21) is fixedly arranged on the protrusion (222); the positioning block (21) is provided with a first side surface (211), an inner bevel (212) and a second side surface (213) connected in sequence; the inner bevel (212) is opposite to the front of the connecting section plane (22); the positioning groove (31) is provided with a first positioning side surface (311), an inner side surface (312) and a second positioning side surface (313) connected in sequence; the inner side surface (312) faces the side away from the extruder die body (1); the first side surface (211) contacts the first positioning side surface (311), the inner bevel (212) contacts the inner side surface (312), and the second side surface (213) contacts the second positioning side surface (313).

7. The extruder die quick connection mechanism according to claim 6, characterized in that: The first side surface (211), the second side surface (213) and the second positioning side surface (313) are all perpendicular to the connecting section plane (22), and the angle between the second positioning side surface (313) and the vertical direction is greater than 3° and less than 10°.

8. The extruder die quick connection mechanism according to claim 7, characterized in that: The inner side surface (312) is parallel to the connecting section plane (22), and the angle between the first positioning side surface (311) and the inner side surface (312) is greater than 100° and less than 110°.

9. The extruder die quick connection mechanism according to claim 6, characterized in that: The included angle between the inner inclined surface (212) and the inner side surface (312) is greater than 10° and less than 20°.

10. The extruder die quick connection mechanism according to claim 9, characterized in that: A sealing bevel (23) is also provided on the surface of the die body connecting section (2) opposite to the main machine connecting section (3); a sealing concave surface (32) is provided on the main machine connecting section (3) to cooperate with the sealing bevel (23); the sealing bevel (23) abuts against the sealing concave surface (32); the angle between the sealing bevel (23) and the connecting section plane (22) is greater than 1° and less than 5°; the maximum axial distance between the sealing bevel (23) and the connecting section plane (22) is less than the length of the protrusion (222) in the direction of the central axis of the extruder die body (1).

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