Rotary extrusion die stub bar cutting device

Abstract

The utility model relates to a rotary extrusion die stub bar cutting device which is suitable for cutting a stub bar on an extrusion die and comprises a base, a positioning module and a shearing module, the positioning module and the shearing module are arranged on the base, the positioning module fixes the die on the base, and the two ends of the base extend upwards to form a first supporting piece and a second supporting piece respectively; the shearing module comprises a mounting plate, a first telescopic assembly arranged on the mounting plate and a cutter arranged at the telescopic end of the first telescopic assembly, and the cutter is arranged right opposite to the connecting position of the mold and the material head. Two ends of the mounting plate are respectively a first end and a second end; the first end is pivoted to one end, far away from the base, of the support piece I; when the first end rotates relative to the first supporting piece, the second end at least has an opening state away from the second supporting piece and a closing state in lap joint with the upper end of the second supporting piece. By means of the arrangement, manual stub bar cutting is replaced, the labor intensity of workers is reduced, the participation degree of the workers is reduced, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum extrusion, in particular to a rotary extrusion die stock cutting device. Background Art

[0002] In the extrusion molding process, the stock of the extrusion die refers to the part of aluminum material remaining at the die outlet that cannot be completely cut by the extruder during extrusion. To ensure the normal use and repair of the die, the die must be immersed in an alkaline solution until the aluminum material in the cavity completely reacts. However, these remaining stocks will significantly increase the consumption of the alkaline solution. Therefore, they must be cut off before the die is repaired.

[0003] In the prior art, pneumatic picks or manual knocking methods are usually used to cut off these stocks. However, these methods not only produce high noise and high labor intensity, but also are time-consuming and laborious, with low efficiency. Summary of the Utility Model

[0004] To solve the above defects, the utility model provides a rotary extrusion die stock cutting device.

[0005] The technical solution adopted by the utility model is a rotary extrusion die stock cutting device suitable for cutting the stock on the extrusion die, including a base, a positioning module and a shearing module arranged on the base. The positioning module fixes the die on the base, and two support members, namely support member one and support member two, extend upward from both ends of the base respectively; the shearing module includes a mounting plate, a first telescopic component arranged on the mounting plate, and a cutting knife arranged at the telescopic end of the first telescopic component. The cutting knife is arranged opposite to the connection part of the die and the stock; both ends of the mounting plate are the first end and the second end respectively. The first end is pivotally connected to the end of support member one far from the base; when the first end rotates relative to support member one, the second end has at least an open state of moving away from support member two and a closed state of overlapping on the upper end of support member two.

[0006] Preferably, a locking seat is arranged at the end of support member two far from the base. A clamping groove is opened on the side surface of the locking seat, and a locking shaft is arranged on the second end of the mounting plate opposite to the clamping groove; when the second end of the mounting plate is in the closed state, the locking shaft extends into the clamping groove.

[0007] Preferably, the locking seat is arranged on the outer side of support member two; when the second end of the mounting plate is in the closed state, the part of the locking shaft located under the mounting plate extends into the clamping groove.

[0008] Preferably, a through mounting hole two is formed on the surface of the mounting plate. The locking shaft is slidably inserted into the mounting hole two. One end of the locking shaft has an increased diameter to form a stop portion, and the outer circumference of the other end is provided with an external thread to form a locking portion. A first locking nut threadedly connected to the locking portion is arranged on the locking shaft. The first locking nut cooperates with the locking shaft to lock the mounting plate and the locking seat.

[0009] Preferably, a rotary seat is arranged at one end of the first support member away from the base. A through connection hole is formed on the surface of the rotary seat. A through mounting hole one is also formed on the surface of the mounting plate opposite to the connection hole. A rotary shaft is slidably inserted into the mounting hole one and the connection hole; the mounting plate and the support member rotate relative to each other around the rotary shaft.

[0010] Preferably, the first telescopic assembly is a pair of parallel hydraulic cylinders. The cutting knife is arranged on one side of the knife seat. The output ends of the pair of hydraulic cylinders are respectively fixedly connected to both ends of the other side of the knife seat.

[0011] Preferably, the positioning module includes a pair of convex strips, and the pair of convex strips are arranged in parallel on the base.

[0012] Preferably, the positioning module further includes a second telescopic assembly, and the telescopic end of the second telescopic assembly approaches or moves away from the mold along the length direction of the convex strip.

[0013] Preferably, the positioning module further includes a blocking portion arranged on the base. The side and the upper end of the blocking portion are respectively arranged opposite to the telescopic end of the second telescopic assembly and the cutting knife. A demolding hole is formed in the middle of the blocking portion, and the size of the demolding hole matches the size of the mold.

[0014] Preferably, both ends of the blocking portion are respectively connected to the first support member and the second support member.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The rotary extrusion die stock cutting device in the utility model cuts the stock through the shearing module, replacing manual stock cutting. The labor intensity of workers is reduced, and the participation of workers is decreased, improving safety; the rotary extrusion die stock cutting device uses the first telescopic assembly to drive the cutting knife to shear the stock, and the stock cutting is completed mechanically and automatically, with high cutting efficiency;

[0017] 2. By designing the two ends of the mounting plate, the second end of the mounting plate has two states, forming a rotary structure. When it is necessary to pick up or place the mold, only rotate the mounting plate so that the second end of the mounting plate is in the open state, and the mold can be picked up or placed without obstruction, reducing the possibility of interference between the mold and the shearing module. When it is necessary to cut the stock head, only rotate the mounting plate again so that the second end of the mounting plate is in the closed state, and the stock head can be cut, which is convenient for operation and use, and improves the overall working efficiency of the rotary extrusion die stock head cutting device.

[0018] 3. The first telescopic assembly is a pair of hydraulic cylinders. The pair of hydraulic cylinders are arranged in parallel. The pair of hydraulic cylinders input or output hydraulic oil through the connected oil pipes, so as to realize the synchronous telescoping of the pair of hydraulic cylinders, and can jointly provide uniform and stable cutting force for the cutting tool, prevent the cutting tool from tilting or shifting, and there is no need to additionally set a track to limit the displacement of the cutting tool. Setting a pair of hydraulic cylinders disperses the load in the operation, reduces the burden on a single hydraulic cylinder, and prolongs the service life of the first telescopic assembly. The shearing module also includes a tool holder. The output ends of the pair of hydraulic cylinders are respectively fixedly connected to both ends of one side of the tool holder, and the cutting tool is arranged on the other side of the tool holder. The tool holder evenly transmits the force generated by the pair of hydraulic cylinders to the cutting tool, ensures that the cutting tool is evenly stressed, reduces the unstable factors in the operation, improves the safety of the cutting operation, and enhances the cutting effect. Brief Description of the Drawings

[0019] The present utility model will be described in detail below in conjunction with the embodiments and the drawings, wherein:

[0020] Figure 1 is the front view of the rotary extrusion die stock head cutting device;

[0021] Figure 2 is the top view of the rotary extrusion die stock head cutting device;

[0022] Figure 3 is the side view of the rotary extrusion die stock head cutting device.

[0023] 1. First telescopic assembly; 2. Oil pipe; 3. Mounting plate; 4. Anti-loosening nut; 5. Plain bearing; 6. Rotary seat; 7. Rotary shaft; 8. Cutting tool; 9. Tool holder; 10. Locking shaft; 11. Locking seat; 12. First locking nut; 13. Square hole wrench; 14. Base; 15. Support member 1; 16. Support member 2; 17. Blocking portion; 18. Demolding hole. Detailed Embodiment

[0024] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar components or components with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0025] In one embodiment, as Figure 1 shown, a rotary extrusion die stock cutting device is applicable to cutting the stock on an extrusion die. The device includes a base 14, a positioning module, and a shearing module. The base 14 is used to support the entire rotary extrusion die stock cutting device. The positioning module and the shearing module are both arranged on the base 14. The positioning module fixes the die on the base 14 so that the stock of the die can be stably cut off at a preset position. Both ends of the base 14 extend upward to form a first support member 15 and a second support member 16 respectively. The base 14 supports the shearing module above the die through the first support member 15 and the second support member 16, facilitating the shearing module to cut the stock. Among them, the base 14 can be the frame of a die unloading machine.

[0026] Specifically, the shearing module includes a mounting plate 3, a first telescopic component 1, and a cutting knife 8. Both ends of the mounting plate 3 are respectively supported on the upper ends of the first support member 15 and the second support member 16. The first telescopic component 1 is arranged on the mounting plate 3. The cutting knife 8 is arranged at the telescopic end of the first telescopic component 1. The cutting knife 8 is arranged opposite to the connection between the die and the stock. Thus, driven by the first telescopic member, the cutting knife 8 can complete the cutting of the stock of the die.

[0027] Among them, as Figures 1-3 shown, both ends of the mounting plate 3 are respectively a first end and a second end. The first end is pivotally connected to the end of the first support member 15 away from the base 14, that is, the first end and the first support member 15 can rotate relative to an axis. When the first end rotates relative to the first support member 15, the second end has an open state and a closed state. When the second end is in the open state, it is far away from the second support member 16, thereby opening the channel above the middle of the first support member 15 and the second support member 16, facilitating placing the die on the base 14 from here. When the second end is in the closed state, it overlaps on the upper end of the second support member 16. Thus, the mounting plate 3 is supported on the first support member 15 and the second support member 16 through its two ends, so that the cutting knife 8 can cut off the stock opposite to the connection between the die and the stock.

[0028] In use, first, rotate the mounting plate 3 relative to the first support member 15 so that the second end of the mounting plate 3 is in an open state. Then, place the mold on the base 14 unobstructed from above the cutting device, and position the mold at a preset position for waiting to cut the stock head through the positioning module. Finally, rotate the mounting plate 3 relative to the first support member 15 again so that the second end of the mounting plate 3 is in a closed state, that is, the mounting plate 3 is supported above the mold by the first support member 15 and the second support member 16. At this time, start the first telescopic assembly 1, and the first telescopic assembly 1 drives the cutting tool 8 to cut the stock head from the mold.

[0029] In the rotary extrusion die stock head cutting device in this embodiment, the stock head is cut through the shearing module, replacing manual cutting of the stock head. The labor intensity of workers is reduced, and the participation of workers is decreased, improving safety. The rotary extrusion die stock head cutting device also positions the mold at a preset position through the positioning module, facilitating the accurate cutting of the stock head by the cutting tool 8. The rotary extrusion die stock head cutting device uses the first telescopic assembly 1 to drive the cutting tool 8 to shear the stock head, and the cutting of the stock head is completed by mechanical automation with high cutting efficiency. In addition, by designing the two ends of the mounting plate 3, the second end of the mounting plate 3 has two states, forming a rotary structure. When the mold needs to be taken and placed, only rotate the mounting plate 3 so that the second end of the mounting plate 3 is in an open state, and the mold can be taken and placed without obstruction, reducing the possibility of interference between the mold and the shearing module. When the stock head needs to be cut, only rotate the mounting plate 3 again so that the second end of the mounting plate 3 is in a closed state, and the stock head can be cut, which is convenient for operation and use, and improves the overall working efficiency of the rotary extrusion die stock head cutting device.

[0030] In one embodiment, a locking seat 11 is provided at the end of the second support member 16. The locking seat 11 and the base 14 are arranged at both ends of the second support member 16. A card slot is opened on the side surface of the locking seat 11, and a locking shaft 10 is provided on the second end of the mounting plate 3 facing the card slot. When the second end of the mounting plate 3 is in a closed state, the locking shaft 10 extends into the card slot. That is, when the second end of the mounting plate 3 is lapped and supported on the upper end of the second support member 16, the locking shaft 10 extends into the card slot of the locking seat 11. The connection between the locking shaft 10 and the locking seat 11 has the functions of guiding and positioning, enabling the mounting plate 3 and the second support member 16 to be accurately lapped at a preset position, so that the second support member 16 can provide a reliable supporting force for the mounting plate 3. At the same time, the cooperation between the locking shaft 10 and the card slot on the locking seat 11 can also limit the relative displacement between the two in the direction perpendicular to the side wall of the card slot, thereby restricting the displacement of the mounting plate 3 and the second support member 16 in this direction, improving the stability of the lap joint between the mounting plate 3 and the second support member 16, and facilitating the subsequent operation of cutting the stock head.

[0031] In one embodiment, the locking seat 11 is arranged on the outer side of the second support member 16, that is, the locking seat 11 is arranged on the side of the second support member 16 away from the first support member 15. Compared with being arranged on the inner side of the second support member 16, it can reduce the interference with the first telescopic assembly 1 and the cutting tool 8, extend the service life of the cutting device, and also facilitate the maintenance and adjustment of the locking seat 11. When the second end of the mounting plate 3 is in a closed state, the part of the locking shaft 10 located below the mounting plate 3 extends into the card slot. That is, when the mounting plate 3 is supported on the second support member 16, the locking seat 11 is located below the mounting plate 3, reducing the probability of workers accidentally touching the locking seat 11, improving the safety of operation, and at the same time simplifying the components above the mounting plate 3, facilitating the installation of the first telescopic assembly 1 on the mounting plate 3, simplifying the structure and facilitating production design.

[0032] In one embodiment, a second mounting hole is formed on the surface of the mounting plate 3, and the second mounting hole penetrates through the plate surface of the mounting plate 3. The locking shaft 10 is slidably inserted into the second mounting hole. The two ends of the locking shaft 10 are respectively a stop portion and a locking portion. The diameter of the stop portion is larger than the diameter of the shaft body of the locking shaft 10, that is, the stop portion is formed by increasing the diameter of the end of the locking shaft 10; an external thread is formed on the circumferential side of the locking portion, and a first locking nut 12 is threadedly connected to the locking portion. The first locking nut 12 cooperates with the locking shaft 10 to lock the mounting plate 3 and the locking seat 11.

[0033] Specifically, the length of the card slot is along the gravity direction, and the card slot penetrates up and down on the locking seat 11 along its length direction. When the second end of the mounting plate 3 is in a closed state, the stop portion of the locking shaft 10 is located below the locking seat 11, and the locking nut and the locking portion of the locking shaft 10 are located above the mounting plate 3. The locking shaft 10 is gradually screwed into the first locking nut 12 upward, and the mounting plate 3 and the locking seat 11 can be locked between the first locking nut 12 and the stop portion, thereby completing the locking of the mounting plate 3 and the second support member 16, so as to stably perform the subsequent cutting head operation.

[0034] In one embodiment, the rotary extrusion die stock cutting device further includes a second locking nut. The second locking nut is arranged between the mounting plate 3 and the locking seat 11 and plays an auxiliary locking role. It can act together with the first locking nut 12 to provide stronger locking force and ensure that the mounting plate 3 is more stable during the cutting operation. A single nut may loosen under long-term vibration or repeated operation. The second locking nut can be used as a locking prevention device. Through the interaction between the two nuts, the reliability of the locking system is increased, and the first locking nut 12 is prevented from loosening due to vibration. In addition, the second locking nut can be used to adjust the position of the locking shaft 10 so that the gap between the mounting plate 3 and the locking seat 11 can be precisely controlled. During the cutting operation, the position of the mounting plate 3 can be precisely adjusted and locked to ensure the cutting accuracy and stability.

[0035] Among them, the first locking nut 12 and the second locking nut can be welded to the upper and lower side surfaces of the mounting plate 3 respectively to ensure that the axial direction of the locking shaft 10 is vertically downward without deviation. A square hole wrench 3 is welded to the upper end of the locking shaft 10 close to the mounting plate 3. The square hole wrench 3 is used to conveniently rotate the locking shaft 10 manually, and the locking shaft 10 moves up and down to lock and unlock the mounting plate 3 and the locking seat 11.

[0036] When the locking shaft 10 moves upward to lock the mounting plate 3 and the locking seat 11, a fixing rope can be inserted through the square hole at the end of the square hole wrench 13 away from the locking shaft 10, and the other end of the fixing rope is fixed to other stable structures to increase the locking force of the square hole wrench 13 on the first locking nut 12 and prevent it from rotating and loosening.

[0037] In other embodiments, the mounting plate and the locking seat can also be locked by a pair of fixing nuts and a third locking nut in cooperation with the locking shaft. Specifically, the pair of fixing nuts and the third locking nut are both threadedly connected to the locking shaft. The pair of fixing nuts are respectively located on the upper and lower side surfaces of the mounting plate, and the third locking nut is located at the lower end of the locking seat. The pair of fixing nuts lock the locking shaft to the mounting plate, and the third locking nut rotates up and down around the locking shaft to lock and unlock the mounting plate and the locking seat.

[0038] In one embodiment, a rotary seat 6 is provided at one end of the first support member 15 away from the base 14. A connecting hole penetrating up and down is provided on the surface of the rotary seat 6, and a first mounting hole penetrating through is also provided on the surface of the mounting plate 3 opposite to the connecting hole. A rotary shaft 7 is slidably inserted into the first mounting hole and the connecting hole. The mounting plate 3 and the support member rotate relative to each other around the rotary shaft 7 to realize the switching of the second end of the mounting plate 3 between the closed state and the open state.

[0039] Furthermore, the rotary seat 6 is provided on the side of the first support member 15 away from the second support member 16 and at the lower end of the mounting plate 3, which can avoid interfering with the operation of the first telescopic assembly 1 and the cutter 8.

[0040] Specifically, the rotary extrusion die head cutting device further includes a plain bearing 5. The rotary shaft 7 is inserted into the rotary seat 6, so that the mounting plate 3 rotates relative to the rotary seat 6 around the rotary shaft 7 through the plain bearing 5. The mounting plate 3 needs to bear the gravity of the first telescopic assembly 1 and the cutter 8, as well as the reverse force when the cutter 8 cuts the die head. The plain bearing 5 can bear a relatively high axial load. Therefore, the mounting plate 3 is connected to the rotary shaft 7 through the plain bearing 5, which can extend the service life of the rotary extrusion die head cutting device.

[0041] Further, anti-loosening nuts 4 are threadedly connected to the upper and lower ends of the rotary shaft 7 respectively. The anti-loosening nuts 4 at both ends can limit the displacement of the rotary shaft 7 in the vertical direction, prevent the rotary shaft 7 from slipping out of the mounting plate 3 and the rotary seat 6, and ensure the safety and stability of the rotary structure. The anti-loosening nuts 4 apply a pre-tightening force to press the plain bearing 5 to ensure the horizontality of the mounting plate 3.

[0042] In one embodiment, the first telescopic assembly 1 is a pair of hydraulic cylinders. The pair of hydraulic cylinders are arranged in parallel. The pair of hydraulic cylinders input or output hydraulic oil through the connected oil pipes 2, so as to realize the synchronous telescoping of the pair of hydraulic cylinders, and can jointly provide a uniform and stable cutting force for the cutter 8, prevent the cutter 8 from tilting or shifting, and there is no need to additionally set a track to limit the displacement of the cutter 8. Setting a pair of hydraulic cylinders disperses the load during operation, reduces the burden on a single hydraulic cylinder, and prolongs the service life of the first telescopic assembly 1. The shearing module further includes a tool holder 9. The output ends of the pair of hydraulic cylinders are respectively fixedly connected to both ends of one side of the tool holder 9, and the cutter 8 is arranged on the other side of the tool holder 9. The tool holder 9 evenly transmits the force generated by the pair of hydraulic cylinders to the cutter 8, ensures that the cutter 8 is evenly stressed, reduces the unstable factors during operation, improves the safety of the cutting operation, and enhances the cutting effect.

[0043] In one embodiment, the positioning module includes a pair of ridges. The pair of ridges are arranged in parallel on the base 14. The pair of ridges can limit the displacement of the mold in the direction perpendicular to the ridges, ensure the accurate positioning of the mold on the base 14, prevent it from shifting during the cutting operation, and the positioning method is simple and effective.

[0044] In one embodiment, the positioning module further includes a second telescopic assembly. The telescopic end of the second telescopic assembly approaches or moves away from the mold along the length direction of the ridge. The second telescopic assembly can change the position of the mold along the length direction of the ridge, drive the mold to reach the preset position of the cutting stock head, and realize the precise positioning of the mold.

[0045] In one embodiment, the first telescopic assembly 1 and the second telescopic assembly can also be set as mechanisms such as air cylinders, electric push rods, and lead screws.

[0046] In one embodiment, the positioning module further includes a blocking portion 17 arranged on the base 14. The side and the upper end of the blocking portion 17 are respectively arranged opposite to the telescopic end of the second telescopic assembly and the cutter 8. A demolding hole 18 is formed in the middle of the blocking portion 17, and the size of the demolding hole 18 matches the size of the mold.

[0047] The stock cutting device of the rotary extrusion die in this embodiment is applicable to cutting the stock of the die with a die sleeve. Specifically, the blocking part 17 cooperates with the second telescopic group to limit the die with the die sleeve below the cutting knife 8. Thus, when the cutting knife 8 moves downward under the drive of the first telescopic component 1, the stock can be cut off from the die. After the stock cutting is completed, the first telescopic component 1 drives the cutting knife 8 to rise and return above the die with the die sleeve, and the rotary mounting plate 3 moves away from the second support member 16, so that the second end of the mounting plate 3 is in an open state. Then the second telescopic component continues to extend to push the die. Since the die sleeve cannot move under the blocking of the blocking part 17, the die in the die sleeve is pushed out of the demoulding hole 18 by the driving part of the second telescopic component, and thus the demoulding of the die is completed. The stock cutting device of the rotary extrusion die in this embodiment can not only cut the stock of the die with a die sleeve, but also conveniently and quickly demould the die from the die sleeve, improving the production efficiency and operation convenience.

[0048] In one embodiment, the two ends of the blocking part 17 are respectively connected to the first support member 15 and the second support member 16, improving the integrity and stability of the structure. Further, the ends of the first support member 15 and the second support member 16 away from the blocking part 17 are respectively connected to the fixed ends of the second telescopic component, further strengthening the structure of the device. Each component of the whole device forms a tight structural connection, improving the stability and working efficiency of the device and helping to ensure the accuracy and reliability of the cutting process.

[0049] In the description of this specification, if terms such as "Embodiment 1", "this embodiment", "in one embodiment" appear, it means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model or the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0050] In the description of this specification, terms such as "connection", "installation", "fixation", "setting", "having" are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0051] In the description of this specification, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0052] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and apply the technology of this case. Those who are familiar with the technology in this field can obviously make various modifications to these examples easily and apply the general principles described herein to other embodiments without creative labor. Therefore, this case is not limited to the above embodiments, and the following modifications should all be within the protection scope of this case: ① A new technical solution implemented based on the technical solution of this utility model in combination with the existing common knowledge, and the technical effect produced by this new technical solution does not exceed the technical effect of this utility model; ② An equivalent replacement of some features of the technical solution of this utility model using well-known technology, and the technical effect produced is the same as the technical effect of this utility model; ③ Expansion based on the technical solution of this utility model, and the substantial content of the expanded technical solution does not exceed the technical solution of this utility model; ④ An equivalent transformation made using the content of the specification and drawings of this utility model, directly or indirectly applied to other related technical fields.

Claims

1. A rotary extrusion die head cutting device, suitable for cutting the head on the extrusion die, characterized in that: It comprises a base, a positioning module and a shearing module arranged on the base, wherein the positioning module fixes the mold on the base, and two ends of the base extend upward to form a support member 1 and a support member 2 respectively; The shearing module comprises a mounting plate, a first telescopic component arranged on the mounting plate, and a cutter arranged at the telescopic end of the first telescopic component, wherein the cutter is arranged facing the connection between the mold and the material head; The two ends of the mounting plate are respectively a first end and a second end, the first end being pivotally connected to an end of the support member 1 away from the base; when the first end rotates relative to the support member 1, the second end has at least an open state away from the support member 2 and a closed state overlapping the upper end of the support member 2.

2. The rotary extrusion die stub cutting device according to claim 1, characterized in that: A locking seat is provided at one end of the support member 2 away from the base, a slot is provided on the side of the locking seat, and a locking shaft is provided at the second end of the mounting plate facing the slot; when the second end of the mounting plate is in the closed state, the locking shaft extends into the slot.

3. The rotary extrusion die stub cutting device according to claim 2, characterized in that: The locking seat is arranged on the outer side of the second supporting member; when the second end of the mounting plate is in the closed state, the portion of the locking shaft located at the lower side of the mounting plate extends into the slot.

4. The rotary extrusion die stub cutting device according to claim 3, characterized in that: A through mounting hole II is provided on the surface of the mounting plate, and the locking shaft is slidably inserted into the mounting hole II. The diameter of one end of the locking shaft is increased to form a stop portion, and an external thread is provided on the circumference of the other end to form a locking portion. A first locking nut threadedly connected to the locking portion is provided on the locking shaft, and the first locking nut cooperates with the locking shaft to lock the mounting plate and the locking seat.

5. The rotary extrusion die stub cutting device according to claim 4, characterized in that: A swivel seat is provided at one end of the support member away from the base, a connecting hole is provided on the surface of the swivel seat which passes through the upper and lower parts, a through mounting hole 1 is also provided on the surface of the mounting plate facing the connecting hole, a swivel shaft is slidably inserted in the mounting hole 1 and the connecting hole; the mounting plate and the support member rotate relatively around the swivel shaft.

6. The rotary extrusion die stub cutting device according to claim 1, characterized in that: The first telescopic assembly is a pair of hydraulic cylinders arranged in parallel, the cutter is arranged on one side of the knife seat, and the output ends of the pair of hydraulic cylinders are respectively fixedly connected to the two ends of the other side of the knife seat.

7. The rotary extrusion die stub cutting device according to claim 1, characterized in that: The positioning module comprises a pair of convex strips, and the pair of convex strips are arranged in parallel on the base.

8. The rotary extrusion die stub cutting device according to claim 7, characterized in that: The positioning module also includes a second telescopic component, and the telescopic end of the second telescopic component is close to or away from the mold along the length direction of the convex strip.

9. The rotary extrusion die stub cutting device according to claim 8, characterized in that: The positioning module also includes a blocking portion arranged on the base, the side surface and the upper end of the blocking portion are respectively arranged opposite to the telescopic end of the second telescopic component and the cutter, and a demoulding hole is opened in the middle of the blocking portion, and the size of the demoulding hole matches the size of the mold.

10. The rotary extrusion die stub cutting device according to claim 9, characterized in that: The two ends of the blocking portion are respectively connected to the support member 1 and the support member 2.

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