Screw distributing machine

Abstract

The utility model discloses a screw distributor which comprises a frame, a screw distributing mechanism, a module clamping mechanism and a clamping auxiliary mechanism, and the screw distributing mechanism comprises a second hydraulic cylinder, a sliding die, a distributing pipe, an installation frame and a vibration conveying assembly. The module clamping mechanism comprises a clamping pipe, a clamping rod, a rotating frame, a stretching frame, an annular groove, a slope pressing plate and a slope pushing plate, the screw distribution mechanism achieves efficient automation and flexible adjustment in the screw classification process, the mechanism is accurately matched with a sliding mold through a second hydraulic cylinder, the distribution position can be finely adjusted, and the screw classification efficiency is improved. The problem that a traditional fixed flow dividing structure is difficult to adapt to screws of different specifications is solved, and rapid mounting and dismounting of the sliding mold are achieved through insertion type connection of the clamping rod and the clamping pipe and ingenious design of the slope pressing plate and the slope pushing plate on the rotating frame.

Description

Technical Field

[0001] This utility model relates to the field of material sorting technology, and more specifically, to a screw sorting machine. Background Technology

[0002] In existing screw feeder technology, the screw distribution adjustment is inconvenient, and the distribution module is difficult to disassemble and maintain. These problems seriously restrict production efficiency and equipment maintenance efficiency.

[0003] Existing screw sorting machines typically employ a fixed sorting structure, which makes it difficult to flexibly adjust to actual production needs once installed. When different sizes of screws need to be processed, operators often need to stop the machine to perform tedious parameter settings or component replacements. This process is not only time-consuming but also complex and requires the participation of professional technicians. Especially in the multi-variety, small-batch production mode, frequent adjustments lead to a large amount of downtime, significantly reducing production efficiency.

[0004] In the existing technology, the shunt module is usually connected to the main frame by welding or multi-point bolt fixing. Although this connection method is stable and reliable during operation, it has many problems during maintenance and replacement. The disassembly process requires the use of a variety of special tools and the simultaneous loosening of multiple fastening points, which is cumbersome and time-consuming. Especially after long-term use, the fasteners may become difficult to disassemble due to corrosion or deformation, further increasing the difficulty of maintenance. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a screw distributor to solve the technical problems mentioned in the background art, such as the inconvenience of screw distribution adjustment and the difficulty in disassembling and maintaining the distribution module.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a screw distributor, comprising a frame, a screw diversion mechanism, a module clamping mechanism, and a clamping auxiliary mechanism. The screw diversion mechanism includes a second hydraulic cylinder, a sliding mold, a diversion pipe, a mounting frame, and a vibration conveying assembly. The mounting frame and the vibration conveying assembly are mounted on the frame. The second hydraulic cylinder is mounted on the side of the frame. The sliding mold is slidably and detachably mounted on the mounting frame. The bottom of the sliding mold is configured to cooperate with the second hydraulic cylinder. Multiple diversion pipes are mounted on the sliding mold. Screws in the vibration conveying assembly can be guided to the diversion pipes. The module clamping mechanism includes a clamping pipe, a clamping rod, a rotating frame, an extension frame, an annular groove, a slope clamping plate, and a slope push plate. The annular groove is disposed on the side wall of the clamping rod. The rotating frame is limited to rotate and mounted on the outer wall of the clamping pipe. The extension frame is laterally slidably mounted on the outer wall of the clamping pipe. The slope clamping plate and the slope push plate are mounted on the rotating frame. The slope clamping plate can press against the extension frame and extend into the annular groove. The slope push plate can push the extension frame away from the annular groove.

[0009] The present invention is further configured such that the snap-fit ​​auxiliary mechanism includes an outer fixed plate, a tightening block, a tightening spring, a mating ring, and a ball rod. Two sets of outer fixed rings are fixedly installed on the outer wall of the snap-fit ​​tube. Pairs of tightening blocks are slidably installed on one end face of the outer fixed plate, and the pairs of tightening blocks are arranged in a ring on the outer fixed plate. The mating ring is installed at the top and bottom ends of the rotating frame. Multiple sets of ball rods are installed on one end face of the mating ring. One end of the ball rod extends between the pairs of tightening blocks. One end of the ball rod can extend into different pairs of tightening blocks in sequence, so that the rotating frame and the mating ring can rotate stably.

[0010] The present invention is further configured such that a longitudinal frame is installed at the top end of the frame, and a first hydraulic cylinder is installed at the top end of the longitudinal frame. The longitudinal frame provides a vertical support structure at the top of the frame, providing a stable running track for the first hydraulic cylinder and the moving block, and ensuring the reciprocating motion accuracy of the pressure plate.

[0011] The present invention is further configured such that a movable block is slidably mounted on the longitudinal frame, and the top end of the movable block is connected to one end of the first liquid cylinder. The movable block is precisely connected to the first liquid cylinder to achieve directional and smooth sliding, reduce lateral swaying, and ensure that the pressure of the pressure plate is uniform and stable.

[0012] The present invention is further configured such that a pressure plate is installed on the moving block, and the pressure plate can reciprocate to press against the output end of the vibration conveying component, so that the screw enters the diversion tube in the sliding mold. The pressure plate cooperates with the output end of the vibration conveying component to achieve precise guidance of the screw, prevent the screw from accumulating or scattering, and ensure diversion efficiency.

[0013] The present invention is further configured such that the diversion tube is provided in multiple sets, and the inner diameter of the diversion tube is set in different ways. A movable plate is installed at one end of the first liquid cylinder, and the clamping tube is fixedly installed on one end face of the movable plate. The multiple sets of different inner diameter designs meet the classification requirements of various specifications of screws. The smooth inner wall treatment reduces the phenomenon of material jamming and improves the diversion accuracy.

[0014] The present invention is further configured such that a bottom plate is installed at the bottom end of the sliding mold, and a snap-fit ​​rod is installed on the bottom plate. The snap-fit ​​rod can extend through the moving plate and engage with the snap-fit ​​tube. The bottom plate enhances the structural stability of the sliding mold and serves as an installation platform for the snap-fit ​​rod, ensuring the accuracy and reliability of the snap-fit ​​connection.

[0015] The present invention is further configured such that a centripetal rail is installed at the top end of the outer fixed plate, and a pair of tightening blocks are arranged to slide in opposite directions on the centripetal rail. The centripetal rail is installed on the top of the outer fixed plate to guide the tightening blocks to slide precisely in the centripetal direction, reduce offset, ensure uniform distribution of clamping force, and improve operating accuracy.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a screw sorting machine, which has the following beneficial effects:

[0018] This utility model features a screw distribution mechanism, which enables efficient automation and flexible adjustment of the screw sorting process. Through the precise cooperation between the second hydraulic cylinder and the sliding mold, the distribution position can be finely adjusted, solving the problem that traditional fixed distribution structures are difficult to adapt to screws of different specifications. The detachable design of the sliding mold greatly improves the adaptability of the equipment, allowing for quick replacement of different specifications of distribution components according to production needs, thus reducing line changeover time.

[0019] This utility model features a module locking mechanism. Through the insertion connection of the locking rod and the locking tube, combined with the ingenious design of the slope clamping plate and slope push plate on the rotating frame, the sliding mold can be quickly installed and disassembled. The rotation operation allows the extension frame to accurately extend into the annular groove to form a reliable lock, while the reverse rotation easily releases the lock. Module replacement can be completed without any tools, greatly reducing the complexity of operation and shortening the maintenance time.

[0020] This utility model is equipped with a snap-fit ​​auxiliary mechanism. The tightening blocks arranged in a ring on the outer fixed plate cooperate with the ball on the mating ring to achieve stable rotation of the rotating frame. The guide of the centripetal rail causes the tightening blocks to slide in a specific direction, while the tightening spring provides appropriate preload to ensure that the ball can smoothly transition during rotation. This greatly improves the smoothness and comfort of the snap-fit ​​operation and avoids jamming or shaking during rotation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0022] Figure 2 This is a schematic diagram of the screw diversion mechanism in this utility model;

[0023] Figure 3 This is a structural schematic diagram of the sliding mold installation method in this utility model;

[0024] Figure 4 This is a schematic diagram of the module snap-fit ​​mechanism and the snap-fit ​​auxiliary mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the module snap-fit ​​mechanism and the snap-fit ​​auxiliary mechanism in this utility model.

[0026] In the diagram: 1. Frame; 2. Second hydraulic cylinder; 3. Sliding mold; 4. Diverter pipe; 5. Mounting frame; 6. Vibration conveyor assembly; 7. Clamping pipe; 8. Clamping rod; 9. Rotating frame; 10. Extension frame; 11. Annular groove; 12. Slope clamping plate; 13. Slope push plate; 14. Outer fixing plate; 15. Tightening block; 16. Tightening spring; 17. Matching ring; 18. Ball rod; 19. Longitudinal frame; 20. First hydraulic cylinder; 21. Moving block; 22. Pressure plate; 23. Moving plate; 24. Bottom plate; 25. Centripetal rail. Detailed Implementation

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

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

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

[0030] Please see Figures 1-5A screw distributor includes a frame 1, a screw diversion mechanism, a module clamping mechanism, and a clamping auxiliary mechanism. The screw diversion mechanism includes a second hydraulic cylinder 2, a sliding mold 3, diversion pipes 4, a mounting frame 5, and a vibrating conveying assembly 6. The mounting frame 5 and the vibrating conveying assembly 6 are mounted on the frame 1. The second hydraulic cylinder 2 is mounted on the side of the frame 1. The sliding mold 3 is slidably and detachably mounted on the mounting frame 5. The bottom of the sliding mold 3 is configured to cooperate with the second hydraulic cylinder 2. Multiple diversion pipes 4 are mounted on the sliding mold 3. Screws in the vibrating conveying assembly 6 can be guided to the diversion pipes. The flow tube 4 and the module snap-fit ​​mechanism include a snap-fit ​​tube 7, a snap-fit ​​rod 8, a rotating frame 9, an extension frame 10, an annular groove 11, a slope clamping plate 12, and a slope push plate 13. The annular groove 11 is set on the side wall of the snap-fit ​​rod 8. The rotating frame 9 is rotatably mounted on the outer wall of the snap-fit ​​tube 7. The extension frame 10 is laterally slidably mounted on the outer wall of the snap-fit ​​tube 7. The slope clamping plate 12 and the slope push plate 13 are mounted on the rotating frame 9. The slope clamping plate 12 can press against the extension frame 10 and extend into the annular groove 11. The slope push plate 13 can push the extension frame 10 away from the annular groove 11.

[0031] In this embodiment, the bulk screws are first initially aligned and conveyed to the diversion area by the vibration conveying assembly 6. When the screws reach the output end of the vibration conveying assembly 6, the first hydraulic cylinder 20 on the longitudinal frame 19 drives the moving block 21 to descend, causing the pressure plate 22 to reciprocate against the output end of the vibration conveying assembly 6, precisely guiding the screws into the diversion pipe 4 in the sliding mold 3. The multiple sets of diversion pipes 4 with different inner diameters installed on the sliding mold 3 can classify the screws according to their specifications, achieving precise diversion of the screws. The second hydraulic cylinder 2 is installed on the side of the frame 1 and connected to the bottom of the sliding mold 3, which can drive the sliding mold 3 to make precise position adjustments on the mounting frame 5, optimizing the screw diversion effect. When the sliding mold 3 needs to be installed, the snap-fit ​​rod 8 is inserted into the snap-fit ​​tube 7 connected to the moving plate 23. The rotating frame 9 is limited to rotating on the outer wall of the snap-fit ​​tube 7. During the rotation, the slope clamping plate 12 presses against the extension frame 10, causing the extension frame 10 to slide laterally and extend into the annular groove 11 on the side wall of the snap-fit ​​rod 8, forming a mechanical lock to ensure a stable connection of the sliding mold 3. When the sliding mold 3 needs to be disassembled, the rotating frame 9 is rotated in the opposite direction. At this time, the slope push plate 13 pushes the extension frame 10 away from the annular groove 11, releasing the locking state. The snap-fit ​​rod 8 can then be smoothly disassembled from the snap-fit ​​tube 7, realizing the quick disassembly of the sliding mold 3. This makes module replacement simple and quick, greatly shortening the equipment adjustment time.

[0032] The locking auxiliary mechanism includes an outer fixed plate 14, a tightening block 15, a tightening spring 16, a mating ring 17, and a ball rod 18. Two sets of outer fixed rings are fixedly installed on the outer wall of the locking tube 7. Pairs of tightening blocks 15 are slidably installed on one end face of the outer fixed plate 14, and the pairs of tightening blocks 15 are arranged in a ring on the outer fixed plate 14. The mating ring 17 is installed at the top and bottom ends of the rotating frame 9. Multiple sets of ball rods 18 are installed on one end face of the mating ring 17. One end of the ball rod 18 extends between the pairs of tightening blocks 15. One end of the ball rod 18 can extend into different pairs of tightening blocks 15 in sequence, so that the rotating frame 9 and the mating ring 17 can rotate stably.

[0033] In this embodiment, two sets of outer fixing plates 14 are fixedly installed on the outer wall of the clamping tube 7. Each set of outer fixing plates 14 has multiple pairs of opposing sliding tightening blocks 15 arranged in a ring. The mating ring 17 is installed on the top and bottom of the rotating frame 9. Multiple sets of ball rods 18 are mounted on the surface of the mating ring 17. When the rotating frame 9 is rotated, the ball rods 18 are inserted into different pairs of tightening blocks 15 in sequence. The tightening blocks 15 clamp the ball rods 18 under the action of the tightening spring 16, ensuring that the rotation process is stable and controllable. The centripetal rail 25 at the top of the outer fixing plate 14 guides the pairs of tightening blocks 15 to slide in the centripetal direction, ensuring that the clamping force is evenly distributed, making the rotation operation smoother and more precise, and improving the operational reliability and service life of the clamping mechanism.

[0034] Please see Figures 1-5 As a supplementary embodiment of a screw feeder with a screw diversion mechanism, a module snap-fit ​​mechanism, and a snap-fit ​​auxiliary mechanism: A longitudinal frame 19 is installed at the top end of the frame 1, and a first hydraulic cylinder 20 is installed at the top end of the longitudinal frame 19. A movable block 21 is slidably installed on the longitudinal frame 19, and the top end of the movable block 21 is connected to one end of the first hydraulic cylinder 20. A pressure plate 22 is installed on the movable block 21, and the pressure plate 22 can reciprocate to press against the output end of the vibrating conveying assembly 6, so that the screw enters the sliding mold 3. Inside the diversion pipe 4, multiple sets of diversion pipes 4 are provided, and the inner diameter of the diversion pipes 4 is set differently. A movable plate 23 is installed at one end of the first liquid cylinder 20, and the clamping pipe 7 is fixedly installed on one end face of the movable plate 23. A bottom plate 24 is installed at the bottom end of the sliding mold 3, and a clamping rod 8 is installed on the bottom plate 24. The clamping rod 8 can extend through the movable plate 23 and engage with the clamping pipe 7. A centripetal rail 25 is installed at the top end of the outer fixed plate 14, and a pair of tightening blocks 15 are arranged to slide in opposite directions on the centripetal rail 25.

[0035] More specifically, the overall workflow of the screw sorting machine first involves the vibrating conveyor assembly 6 transporting the bulk screws in an orderly fashion. The first hydraulic cylinder 20 drives the pressure plate 22 to reciprocate against the output end of the vibrating conveyor assembly 6, precisely guiding the screws into the different inner diameter diversion pipes 4 on the sliding mold 3, thus classifying the screws according to specifications. According to changes in production needs, the operator can quickly replace the sliding mold 3 assembly through the module snap-fit ​​mechanism. By rotating the rotating frame 9, the slope push plate 13 pushes the extension frame 10 out of the annular groove 11 of the snap-fit ​​rod 8, removing the current sliding mold 3. After installing the new sliding mold 3, the snap-fit ​​rod 8 is inserted into the snap-fit ​​pipe 7, and the rotating frame 9 is rotated again. The slope clamping plate 12 presses the extension frame 10 into the annular groove 11, completing the locking. During this process, the ball rod 18 and the tightening block 15 system of the snap-fit ​​auxiliary mechanism ensure that the rotation operation is stable and controllable. The second hydraulic cylinder 2 can adjust the position of the sliding mold 3 according to actual needs to optimize the diversion effect.

[0036] In summary, during the use or operation of the overall equipment: when the screw diversion mechanism is in operation, the bulk screws are first initially arranged and transported to the diversion area by the vibrating conveying component 6. When the screws reach the output end of the vibrating conveying component 6, the first hydraulic cylinder 20 on the longitudinal frame 19 drives the moving block 21 to descend, causing the pressure plate 22 to reciprocate against the output end of the vibrating conveying component 6, precisely guiding the screws into the diversion pipe 4 in the sliding mold 3. The multiple sets of diversion pipes 4 with different inner diameters installed on the sliding mold 3 can classify the screws according to their specifications, achieving precise screw diversion. The second hydraulic cylinder 2 is installed on the side of the frame 1 and connected to the bottom of the sliding mold 3, which can drive the sliding mold 3 to make precise position adjustments on the mounting frame 5, optimizing the screw diversion effect.

[0037] When the module snap-fit ​​mechanism is in operation, it is responsible for the quick installation and removal of the sliding mold 3. When the sliding mold 3 needs to be installed, the snap-fit ​​rod 8 is inserted into the snap-fit ​​tube 7 connected to the moving plate 23. The rotating frame 9 is limited to rotating on the outer wall of the snap-fit ​​tube 7. During the rotation, the slope clamping plate 12 presses against the extension frame 10, causing the extension frame 10 to slide laterally and extend into the annular groove 11 on the side wall of the snap-fit ​​rod 8, forming a mechanical lock to ensure a stable connection of the sliding mold 3. When the sliding mold 3 needs to be removed, the rotating frame 9 is rotated in the opposite direction. At this time, the slope push plate 13 pushes the extension frame 10 away from the annular groove 11, releasing the locking state. The snap-fit ​​rod 8 can then be smoothly disengaged from the snap-fit ​​tube 7, realizing the quick removal of the sliding mold 3. This makes module replacement simple and quick, greatly shortening the equipment adjustment time.

[0038] When the clamping auxiliary mechanism is in operation, two sets of outer fixing plates 14 are fixedly installed on the outer wall of the clamping tube 7. Each set of outer fixing plates 14 has multiple pairs of opposing sliding tightening blocks 15 arranged in a ring. The mating ring 17 is installed on the top and bottom of the rotating frame 9. Multiple sets of ball rods 18 are mounted on the surface of the mating ring 17. When the rotating frame 9 is rotated, the ball rods 18 extend into different pairs of tightening blocks 15 in sequence. The tightening blocks 15 clamp the ball rods 18 under the action of the tightening spring 16, ensuring that the rotation process is smooth and controllable. The centripetal rail 25 at the top of the outer fixing plate 14 guides the pairs of tightening blocks 15 to slide in the centripetal direction, ensuring that the clamping force is evenly distributed, making the rotation operation smoother and more precise, and improving the operational reliability and service life of the clamping mechanism.

[0039] The overall workflow of the screw sorting machine begins with the vibrating conveyor assembly 6 transporting bulk screws in an orderly fashion. The first hydraulic cylinder 20 drives the pressure plate 22 to reciprocate against the output end of the vibrating conveyor assembly 6, precisely guiding the screws into the different inner diameter diversion pipes 4 on the sliding mold 3, thus classifying the screws according to specifications. Depending on production needs, the operator can quickly replace the sliding mold 3 assembly using the module snap-fit ​​mechanism. Rotating the rotating frame 9 causes the slope push plate 13 to push the extension frame 10 out of the annular groove 11 of the snap-fit ​​rod 8, removing the current sliding mold 3. After installing the new sliding mold 3, the snap-fit ​​rod 8 is inserted into the snap-fit ​​pipe 7, and the rotating frame 9 is rotated again, causing the slope clamping plate 12 to press the extension frame 10 into the annular groove 11, completing the locking. During this process, the ball rod 18 and the tightening block 15 system of the snap-fit ​​auxiliary mechanism ensure smooth and controllable rotation operation. The second hydraulic cylinder 2 can adjust the position of the sliding mold 3 according to actual needs to optimize the diversion effect.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A screw distributor, comprising a frame (1), a screw diversion mechanism, a module snap-fit ​​mechanism, and a snap-fit ​​auxiliary mechanism, wherein the screw diversion mechanism comprises a second hydraulic cylinder (2), a sliding mold (3), a diversion pipe (4), a mounting frame (5), and a vibration conveying assembly (6), wherein the mounting frame (5) and the vibration conveying assembly (6) are mounted on the frame (1), the second hydraulic cylinder (2) is mounted on the side of the frame (1), the sliding mold (3) is slidably and detachably mounted on the mounting frame (5), the bottom of the sliding mold (3) is configured to cooperate with the second hydraulic cylinder (2), multiple diversion pipes (4) are mounted on the sliding mold (3), and screws in the vibration conveying assembly (6) can be guided to the diversion pipes (4). The module snap-fit ​​mechanism includes a snap-fit ​​tube (7), a snap-fit ​​rod (8), a rotating frame (9), an extension frame (10), an annular groove (11), a slope clamping plate (12), and a slope push plate (13). The annular groove (11) is set on the side wall of the snap-fit ​​rod (8). The rotating frame (9) is limited to rotating and installed on the outer wall of the snap-fit ​​tube (7). The extension frame (10) is laterally slidably installed on the outer wall of the snap-fit ​​tube (7). The slope clamping plate (12) and the slope push plate (13) are installed on the rotating frame (9). The slope clamping plate (12) can press against the extension frame (10) and extend into the annular groove (11). The slope push plate (13) can push the extension frame (10) away from the annular groove (11).

2. The screw feeder according to claim 1, characterized in that: The locking auxiliary mechanism includes an outer fixed plate (14), a tightening block (15), a tightening spring (16), a mating ring (17), and a ball rod (18). Two sets of outer fixed rings are fixedly installed on the outer wall of the locking tube (7). Pairs of tightening blocks (15) are slidably installed on one end face of the outer fixed plate (14), and the pairs of tightening blocks (15) are arranged in a ring on the outer fixed plate (14). The mating ring (17) is installed at the top and bottom ends of the rotating frame (9). Multiple sets of ball rods (18) are installed on one end face of the mating ring (17). One end of the ball rod (18) extends between the pairs of tightening blocks (15). One end of the ball rod (18) can extend into different pairs of tightening blocks (15) in sequence, so that the rotating frame (9) and the mating ring (17) rotate stably.

3. A screw feeder according to claim 1, characterized in that: A longitudinal frame (19) is installed at the top end of the frame (1), and a first hydraulic cylinder (20) is installed at the top end of the longitudinal frame (19).

4. A screw feeder according to claim 3, characterized in that: A movable block (21) is slidably mounted on the longitudinal frame (19), and the top end of the movable block (21) is connected to one end of the first liquid cylinder (20).

5. A screw feeder according to claim 4, characterized in that: A pressure plate (22) is installed on the moving block (21), and the pressure plate (22) can reciprocate to press against the output end of the vibration conveying component (6), so that the screw enters the diversion pipe (4) in the sliding mold (3).

6. A screw feeder according to claim 3, characterized in that: The diversion pipe (4) is provided in multiple sets, and the inner diameter of the diversion pipe (4) is set differently. A movable plate (23) is installed at one end of the first liquid cylinder (20), and the clamping pipe (7) is fixedly installed on one end face of the movable plate (23).

7. A screw feeder according to claim 6, characterized in that: The bottom end of the sliding mold (3) is provided with a bottom plate (24), and the snap-fit ​​rod (8) is installed on the bottom plate (24). The snap-fit ​​rod (8) can extend through the moving plate (23) and engage with the snap-fit ​​tube (7).

8. A screw feeder according to claim 2, characterized in that: The top end of the outer fixing plate (14) is provided with a centripetal rail (25), and a pair of tightening blocks (15) are slidably arranged in opposite directions on the centripetal rail (25).

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