Extruder sleeve locking nut remover

Abstract

The utility model relates to a kind of extruder screw sleeve locking nut dismounters, including first annular plate and second annular plate, first annular plate and second annular plate are connected by connecting arm, shaft hole for the rotating shaft of extruder to pass through is equipped on first annular plate and second annular plate, the inside of second annular plate is rotated and contacted with rotating shaft by rolling mechanism, the outside of second annular plate is equipped with two handles of symmetrical arrangement, the side of first annular plate away from second annular plate is close to screw sleeve locking nut on rotating shaft, it is equipped with several positioning holes corresponding with several thread holes of screw sleeve locking nut on first annular plate, and positioning hole and thread hole are connected by locating bolt;The utility model can be rotated handle to drive second annular plate to rotate around rotating shaft, further drive screw sleeve locking nut to rotate, to dismount screw sleeve locking nut, it is easy to operate, save time, and can prevent damage to screw sleeve locking nut and screw sleeve assembly.

Description

Technical Field

[0001] This utility model relates to the field of extruder screw sleeve locking nut disassembly technology, specifically to an extruder screw sleeve locking nut disassembly tool. Background Technology

[0002] The screw sleeve assembly inside the extruder is one of the key components ensuring the stable operation of the extrusion process. The screw sleeve assembly needs to be secured with a screw sleeve lock nut to ensure it does not loosen or shift under high pressure and high speed operating conditions. During equipment maintenance, upkeep, or replacement of the screw sleeve assembly, the screw sleeve lock nut needs to be removed. Because the screw sleeve lock nut typically requires a large preload during assembly, and over long-term use, factors such as metal fatigue, oxidation and corrosion, material accumulation, or high-temperature environments can cause severe seizing between the screw sleeve lock nut and the rotating shaft, disassembly becomes extremely difficult.

[0003] Currently, when on-site operators disassemble these types of threaded sleeve locking nuts, due to the lack of specialized tools, they usually use methods such as hammering and prying with a pry bar to disassemble them. This operation is complicated, time-consuming, and can easily damage the threaded sleeve locking nut and threaded sleeve assembly, leading to the scrapping of parts and increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to design an extruder screw sleeve locking nut remover, which can solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A screw sleeve locking nut remover for an extruder includes a first annular plate and a second annular plate, which are connected by a connecting arm. Both the first and second annular plates have shaft holes through which the rotating shaft of the extruder passes. The inner side of the second annular plate is in rotatable contact with the rotating shaft via a rolling mechanism. The outer side of the second annular plate has two symmetrically arranged handles. The side of the first annular plate away from the second annular plate is in close contact with the screw sleeve locking nut on the rotating shaft. The first annular plate has a plurality of positioning holes that correspond one-to-one with a plurality of threaded holes of the screw sleeve locking nut. The positioning holes and the threaded holes are connected by positioning bolts.

[0006] Furthermore, the rolling mechanism includes two roller supports symmetrically arranged about the axis of the second annular plate. A plurality of rollers that roll in cooperation with the rotating shaft are rotatably connected to the roller supports, and the roller supports are connected to the inner side of the second annular plate.

[0007] Furthermore, the roller bracket is slidably connected to the inner side of the second annular plate, and the two roller brackets can move in directions that are closer to or further away from each other.

[0008] Furthermore, the roller bracket has an adjusting bolt and two slide rods fixedly connected to it on the side near the inner side of the second annular plate. The two slide rods are symmetrically arranged about the adjusting bolt. The inner side of the second annular plate has a sliding hole that slides with the slide rods. The outer side of the second annular plate has a limiting hole that communicates with the sliding hole. The diameter of the limiting hole is larger than the diameter of the sliding hole. The other end of the slide rod is fixedly connected to a limiting block that slides with the limiting hole. A spring is sleeved on the slide rod. One end of the spring is connected to the side of the limiting hole near the sliding hole, and the other end is connected to the limiting block. An adjusting hole is provided between the inner and outer sides of the second annular plate. The inner wall of the adjusting hole has a first internal thread that threads with the adjusting bolt.

[0009] Furthermore, an extension handle is detachably connected to the end of the handle away from the second annular plate.

[0010] Furthermore, the end of the handle away from the second annular plate is provided with a connecting hole, and the inner wall of the connecting hole is provided with a second internal thread. The end of the extended handle near the handle is fixedly connected to a connecting rod, and the outer wall of the connecting rod is provided with an external thread that mates with the second internal thread.

[0011] The beneficial effects of this utility model are as follows: The first ring plate is fixedly connected to the threaded sleeve locking nut by a positioning bolt, and the second ring plate is in rotatable contact with the rotating shaft through a rolling mechanism. The second ring plate can be rotated around the rotating shaft by turning the handle, which in turn drives the threaded sleeve locking nut to rotate through the first ring plate, so as to disassemble the threaded sleeve locking nut. The operation is simple, saves time, and can prevent damage to the threaded sleeve locking nut and the threaded sleeve assembly. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural diagram illustrating the disassembly process of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3This is an exploded view of the present invention; Figure 4 This is a schematic diagram of the internal structure of the second annular plate in this utility model; Figure 5 This is a schematic diagram of the structure of this utility model, which is fitted with a screw sleeve and a locking nut on a rotating shaft.

[0014] The names of the components shown in the diagram are as follows: 1. First annular plate; 2. Second annular plate; 3. Connecting arm; 4. Rotating shaft; 5. Handle; 6. Screw-fitting nut; 7. Threaded hole; 8. Positioning hole; 9. Positioning bolt; 10. Roller bracket; 11. Roller; 12. Adjusting bolt; 13. Slide rod; 14. Slide hole; 15. Limiting hole; 16. Limiting block; 17. Spring; 18. Adjusting hole; 19. Extended handle; 20. Connecting hole; 21. Connecting rod. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] like Figure 1-5 As shown, an extruder sleeve locking nut remover includes a first annular plate 1 and a second annular plate 2, which are fixedly connected by a connecting arm 3. Both the first annular plate 1 and the second annular plate 2 have shaft holes for the extruder's rotating shaft 4 to pass through. The inner side of the second annular plate 2 is in rotatable contact with the rotating shaft 4 via a rolling mechanism, allowing the second annular plate 2 to rotate around the rotating shaft 4. Two symmetrically arranged handles 5 are provided on the outer side of the second annular plate 2; applying force to the handles 5 drives the second annular plate 2 to rotate. The first annular plate 1 is further... The first annular plate 1 is in close contact with the threaded sleeve locking nut 6 on the rotating shaft 4 on one side of the second annular plate 2. The first annular plate 1 has four positioning holes 8 that correspond one-to-one with the four threaded holes 7 of the threaded sleeve locking nut 6. The positioning holes 8 and the threaded holes 7 are connected by positioning bolts 9 to realize the fixed connection between the first annular plate 1 and the threaded sleeve locking nut 6. This makes it easy to disassemble the threaded sleeve locking nut 6 by rotating the first annular plate 1 when the second annular plate 2 is subjected to force. The operation is simple, saves time, and can prevent damage to the threaded sleeve locking nut 6 and the threaded sleeve assembly.

[0017] The rolling mechanism includes two roller supports 10 symmetrically arranged about the axis of the second annular plate 2. Several rollers 11 are rotatably connected to the roller supports 10 and roll in cooperation with the rotating shaft 4. An adjusting bolt 12 is located on the side of the roller support 10 closest to the inner side of the second annular plate 2, and two sliding rods 13 are fixedly connected thereto. The two sliding rods 13 are symmetrically arranged about the adjusting bolt 12. A sliding hole 14 is provided on the inner side of the second annular plate 2, which slides in cooperation with the sliding rod 13. A limiting hole 15 communicating with the sliding hole 14 is provided on the outer side of the second annular plate 2. The diameter of the limiting hole 15 is larger than the diameter of the sliding hole 14. The other end of the sliding rod 13 is fixedly connected to a limiting block 16 that slides within the limiting hole 15, allowing the roller bracket 10 to slide against the inner side of the second annular plate 2. This enables the two roller brackets 10 to move towards or away from each other. When the two roller brackets 10 move towards each other, they can clamp onto the rotating shaft 4, allowing the second annular plate 2 to rotate around the rotating shaft 4. Furthermore, the roller 11 design reduces... During the rotation of the second annular plate 2, the frictional force it experiences causes the roller 11 to lose contact with the rotating shaft 4 when the two roller supports 10 move away from each other. This prevents the rotating shaft 4 from generating axial friction on the roller 11 during the process of fitting the second annular plate 2 onto the rotating shaft 4, thus improving the service life of the roller 11. A spring 17 is fitted onto the slide rod 13. One end of the spring 17 is connected to the side of the limiting hole 15 near the sliding hole 14, and the other end is connected to the limiting block 16. An adjustment hole 18 is provided between the inner and outer sides of the second annular plate 2. The inner wall of the adjustment hole 18 has a first internal thread that engages with the adjusting bolt 12. When the adjusting bolt 12 rotates in the forward direction, it pushes the roller support 10 towards the other roller support 10 (at which time the spring 17 is compressed). When the bolt 12 rotates in the reverse direction, under the restoring force of the spring 17, it pushes the limiting block 16 to move, thereby causing the roller support 10 to move away from the other roller support 10.

[0018] An extension handle 19 is connected to the end of the handle 5 away from the second annular plate 2. By adding the extension handle 19, it is easier to rotate the second annular plate 2. A connecting hole 20 is provided at the end of the handle 5 away from the second annular plate 2. A second internal thread is provided on the inner wall of the connecting hole 20. A connecting rod 21 is fixedly connected to the end of the extension handle 19 near the handle 5. An external thread that mates with the second internal thread is provided on the outer wall of the connecting rod 21. This enables a detachable connection between the handle 5 and the extension handle 19, making it convenient to replace extension handles 19 of different lengths.

[0019] Working principle: like Figure 1 and 5As shown, when using the threaded sleeve locking nut remover, firstly, the first annular plate 1 and the second annular plate 2 of the remover are sequentially placed on the rotating shaft 4 of the extruder. Then, the positioning bolt 9 is used to connect the positioning hole 8 of the first annular plate 1 with the threaded hole 7 of the threaded sleeve locking nut 6, thus fixing the first annular plate 1 and the threaded sleeve locking nut 6 together. Next, the adjusting bolt 12 is rotated forward, which pushes the roller bracket 10 to move closer to the other roller bracket 10, so that the two roller brackets 10 are clamped on the rotating shaft 4. The second annular plate 2 can then rotate around the rotating shaft 4. Finally, force is applied to the handle 5 to drive the second annular plate 2 to rotate. The second annular plate 2 drives the threaded sleeve locking nut 6 to rotate through the first annular plate 1, thereby removing the threaded sleeve locking nut 6. The operation is simple, saves time, and can prevent damage to the threaded sleeve locking nut 6 and the threaded sleeve assembly.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A screw sleeve locking nut remover for an extruder, characterized in that, The device includes a first ring plate (1) and a second ring plate (2). The first ring plate (1) and the second ring plate (2) are connected by a connecting arm (3). Both the first ring plate (1) and the second ring plate (2) are provided with shaft holes through which the rotating shaft (4) of the extruder passes. The inner side of the second ring plate (2) is in rotational contact with the rotating shaft (4) through a rolling mechanism. The outer side of the second ring plate (2) is provided with two symmetrically arranged handles (5). The side of the first ring plate (1) away from the second ring plate (2) is in close contact with the screw sleeve locking nut (6) on the rotating shaft (4). The first ring plate (1) is provided with a number of positioning holes (8) that correspond one-to-one with a number of threaded holes (7) of the screw sleeve locking nut (6). The positioning holes (8) and the threaded holes (7) are connected by positioning bolts (9).

2. The extruder screw sleeve locking nut remover according to claim 1, characterized in that, The rolling mechanism includes two roller supports (10) symmetrically arranged about the axis of the second annular plate (2). Several rollers (11) that roll in cooperation with the rotating shaft (4) are rotatably connected to the roller supports (10). The roller supports (10) are connected to the inner side of the second annular plate (2).

3. The extruder screw sleeve locking nut remover according to claim 2, characterized in that, The roller bracket (10) is slidably connected to the inner side of the second annular plate (2), and the two roller brackets (10) can move in directions that are close to or far from each other.

4. The extruder screw sleeve locking nut remover according to claim 3, characterized in that, The roller bracket (10) is provided with an adjusting bolt (12) and two slide rods (13) fixedly connected to the inner side of the second annular plate (2). The two slide rods (13) are symmetrically arranged about the adjusting bolt (12). The inner side of the second annular plate (2) is provided with a sliding hole (14) that slides with the slide rods (13). The outer side of the second annular plate (2) is provided with a limiting hole (15) that communicates with the sliding hole (14). The diameter of the limiting hole (15) is larger than the diameter of the sliding hole (14). (13) has a fixed connection to a limiting block (16) that slides with the limiting hole (15). A spring (17) is sleeved on the slide rod (13). One end of the spring (17) is connected to the side of the limiting hole (15) near the sliding hole (14), and the other end is connected to the limiting block (16). An adjustment hole (18) is provided between the inner and outer sides of the second ring plate (2). The inner wall of the adjustment hole (18) is provided with a first internal thread that is threaded with the adjusting bolt (12).

5. The extruder screw sleeve locking nut remover according to claim 1, characterized in that, An extension handle (19) is detachably connected to the end of the handle (5) away from the second annular plate (2).

6. The extruder screw sleeve locking nut remover according to claim 5, characterized in that, The handle (5) is provided with a connecting hole (20) at one end away from the second ring plate (2). The inner wall of the connecting hole (20) is provided with a second internal thread. The extended handle (19) is fixedly connected to a connecting rod (21) at one end near the handle (5). The outer wall of the connecting rod (21) is provided with an external thread that mates with the second internal thread.

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