Disassembling and assembling device for screw shaft lock cap of polyformaldehyde polymerization machine

Abstract

The utility model relates to a dismounting and mounting device for a screw shaft lock cap of a polyformaldehyde polymerization machine. The dismounting and mounting device comprises a base, a clamping assembly and a clamping part, the clamping assembly is arranged on the base and comprises a lifting component and a clamping component, one end of the lifting component is arranged on the base, the other end of the lifting component is connected with the clamping component, the lifting component can adjust the height of the clamping component, the clamping component comprises a clamping ring, connecting keys and a limiting column, and the connecting keys are evenly arranged on the inner circumferential side of the clamping ring. The multiple limiting columns are evenly arranged on the peripheral side of the clamping ring and are connected to the screw shaft lock cap in a sleeving mode through the clamping ring, the connecting keys are clamped and fixed corresponding to key grooves of the screw shaft lock cap, force can be exerted on the key grooves in a dispersed mode during disassembly, assembly and screwing, the risk that the key grooves are damaged is reduced, stress on the periphery of the screw shaft lock cap is more even, and the lock cap is easier to disassemble and assemble; the clamping component is arranged on the base and comprises a clamping ring, and the clamping ring is used for clamping the screw shaft and providing supporting force for the screw shaft, so that the lock cap is convenient to disassemble.

Description

Technical Field

[0001] This utility model relates to the technical field of repair and disassembly of screw shaft lock caps for polyoxymethylene (POM) polymerizers, and more specifically, to a device for disassembling and assembling screw shaft lock caps for POM polymerizers. Background Technology

[0002] Polyoxymethylene (POM) is a thermoplastic crystalline polymer, and a polymerization machine is an extrusion device used in POM production. Multiple blades fitted onto the screw shaft of the polymerization machine are clamped together by locking caps at the ends; these caps need to be removed and installed for maintenance and replacement.

[0003] The lock cap of the screw shaft has multiple keyways in a ring. Currently, the lock cap is removed and installed manually by using tools such as pry bars to hold the keyways, and then striking the pry bar with a hammer. The lock cap rotates relative to the screw shaft by holding the keyways, thus removing or locking the lock cap.

[0004] Existing disassembly and assembly tools only apply force to a single keyway to turn the lock cap, which can easily damage the keyway. Furthermore, when turning the lock cap by tapping, force can only be applied to one side of the lock cap, resulting in uneven force distribution across the entire lock cap and making disassembly and assembly difficult. Utility Model Content

[0005] This invention provides a device for disassembling and assembling the screw shaft lock cap of a polyoxymethylene (POM) polymerizer, which solves the problems of easy damage to the keyway and uneven force distribution during the disassembly and assembly of existing POM polymerizer screw shaft lock caps.

[0006] On one hand, this utility model provides a device for disassembling and assembling a screw shaft lock cap of a polyoxymethylene polymerizer, comprising: a base; a locking assembly disposed on the base, including a lifting component and a locking component, one end of the lifting component being disposed on the base, and the other end of the lifting component being connected to the locking component, the locking component including a retaining ring, connecting keys and limiting posts, a plurality of connecting keys being evenly arranged on the inner circumference of the retaining ring, and a plurality of limiting posts being evenly arranged on the outer circumference of the retaining ring; and a clamping component disposed on the base, capable of extending and retracting within its own height, the clamping component including a clamping ring, the clamping ring being coaxially arranged with the retaining ring.

[0007] In some optional embodiments, the locking component further includes an arc-shaped plate disposed on the front side of the retaining ring, and the arc-shaped plate is slidably connected to the limiting post.

[0008] In some optional embodiments, the arc-shaped plate is provided with an arc-shaped groove that is recessed from the front to the back, and the limiting post is provided with a first protrusion on the front, the first protrusion being slidably connected to the arc-shaped groove.

[0009] In some optional embodiments, the locking component further includes a limiting ring, which is respectively disposed on the front and back of the locking ring, and the limiting ring is slidably connected to the limiting post.

[0010] In some optional embodiments, the lifting component further includes a lifting element, a first telescopic element, and a second telescopic element. The lifting element is disposed between the first telescopic element and the second telescopic element. One end of the lifting element, the first telescopic element, and the second telescopic element is connected to the arc-shaped plate, and the other end of the lifting element, the first telescopic element, and the second telescopic element is disposed on the base.

[0011] In some alternative embodiments, both the first telescopic element and the second telescopic element are electrically operated telescopic rods.

[0012] In some optional embodiments, the lifting element includes a lifting plate, a polygonal lifter, and a fixing part. One end of the polygonal lifter is connected to the lifting plate, and the other end of the polygonal lifter is connected to the fixing part. The lifting plate abuts against the arc-shaped plate, and the fixing part is connected to the base.

[0013] In some optional embodiments, the clamping component includes a fixing frame, a fourth telescopic element, and a fifth telescopic element, the fourth and fifth telescopic elements being arranged in parallel, one end of the fourth and fifth telescopic elements being disposed on the base, the other end of the fourth and fifth telescopic elements being connected to one end of the fixing frame, and the clamping ring being disposed on the other end of the fixing frame.

[0014] In some optional embodiments, the clamping ring includes at least two arc-shaped segments, and a plurality of the arc-shaped segments are sequentially connected to form a clamping ring, wherein any two adjacent arc-shaped segments are detachably connected.

[0015] Compared with the prior art, this utility model has the following technical advantages:

[0016] The screw shaft locking cap disassembly and assembly device for a polyoxymethylene (POM) polymerizer includes a base, a locking assembly, and a clamping component. The locking assembly, located on the base, includes a lifting component and a locking component. One end of the lifting component is located on the base, and the other end is connected to the locking component. The lifting component can adjust the height of the locking component. The locking component includes a retaining ring, connecting keys, and limiting posts. Multiple connecting keys are evenly arranged on the inner circumference of the retaining ring, and multiple limiting posts are evenly arranged on the outer circumference of the retaining ring. The retaining ring is sleeved on the screw shaft locking cap, so that multiple keys simultaneously engage and fix multiple keyways. During disassembly and tightening, the force can be distributed to the keyways, reducing the risk of keyway damage. When rotating the retaining ring to tighten the screw shaft locking cap, the force on the screw shaft locking cap is more evenly distributed around the cap, making the locking cap easier to disassemble and assemble. The clamping component, located on the base, includes a clamping ring. The clamping ring is coaxially arranged with the retaining ring and is used to clamp the screw shaft, providing support for the screw shaft and facilitating the smooth removal of the locking cap from the screw shaft. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 A front view of the polyoxymethylene polymer machine screw shaft lock cap disassembly and assembly device according to an embodiment of the present invention is shown;

[0019] Figure 2 A rear view of the polyoxymethylene polymer machine screw shaft lock cap disassembly and assembly device according to an embodiment of the present invention is shown;

[0020] Figure 3 A top view of the polyoxymethylene polymer machine screw shaft lock cap disassembly and assembly device according to an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram of the clamping component according to an embodiment of the present invention is shown.

[0022] in, Figures 1-4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0023] 1-Base; 2-Clocking assembly; 21-Clamping ring; 22-Connecting key; 23-Limiting post; 24-Arc-shaped plate; 25-Limiting ring; 26-Lifting element; 261-Lifting plate; 262-Polygonal lifter; 263-Fixing part; 27-First telescopic element; 28-Second telescopic element; 3-Clamping component; 31-Clamping ring; 32-Fixing frame; 33-Fourth telescopic element; 34-Fifth telescopic element. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] Polyoxymethylene (POM) is a thermoplastic crystalline polymer, and a polymerization machine is an extrusion device used in POM production. Multiple blades fitted onto the screw shaft of the polymerization machine are clamped together by locking caps at the ends; these caps need to be removed and installed for maintenance and replacement.

[0027] The lock cap of the screw shaft has multiple keyways in a ring. Currently, the lock cap is removed and installed manually by using tools such as pry bars to hold the keyways, and then striking the pry bar with a hammer. The lock cap rotates relative to the screw shaft by holding the keyways, thus removing or locking the lock cap.

[0028] Existing disassembly and assembly tools only apply force to a single keyway to turn the lock cap, which can easily damage the keyway. Furthermore, when turning the lock cap by tapping, force can only be applied to one side of the lock cap, resulting in uneven force distribution across the entire lock cap and making disassembly and assembly difficult.

[0029] This invention provides a device for disassembling and assembling the screw shaft lock cap of a polyoxymethylene (POM) polymerizer, which solves the problems of easy damage to the keyway and uneven force distribution during the disassembly and assembly of existing POM polymerizer screw shaft lock caps.

[0030] The following is in conjunction with the instruction manual. Figure 1 Instruction manual attached Figure 2 Instruction manual attached Figure 3 Included with instruction manual Figure 4 A detailed explanation of the assembly and disassembly device for the screw shaft lock cap of the polyoxymethylene polymerizer is provided.

[0031] This application provides a screw shaft lock cap disassembly and assembly device for a polyoxymethylene (POM) polymerizer. The POM polymerizer screw shaft lock cap disassembly and assembly device includes: a base 1; a locking component 2, disposed on the base 1, including a lifting component and a locking component, one end of the lifting component is disposed on the base 1, and the other end of the lifting component is connected to the locking component, the locking component includes a retaining ring 21, connecting keys 22 and limiting posts 23, multiple connecting keys 22 are evenly arranged on the inner circumference of the retaining ring 21, and multiple limiting posts 23 are evenly arranged on the outer circumference of the retaining ring 21; and a clamping component 3, disposed on the base 1, which can extend and retract within its own height, the clamping component 3 including a clamping ring 31, the clamping ring 31 being coaxially disposed with the retaining ring 21.

[0032] Specifically, the screw shaft lock cap disassembly and assembly device for a polyoxymethylene (POM) polymerizer includes: a base 1, a locking assembly 2, and a clamping component 3. The locking assembly 2 is disposed on the base 1 and includes a lifting component and a locking component. One end of the lifting component is disposed on the base 1, and the other end of the lifting component is connected to the locking component. The lifting component can adjust the height of the locking component. The locking component includes a retaining ring 21, connecting keys 22, and limiting posts 23. Multiple connecting keys 22 are evenly arranged on the inner circumference of the retaining ring 21, and multiple limiting posts 23 are evenly arranged on the outer circumference of the retaining ring 21. The key is fitted onto the screw shaft lock cap, so that multiple keys simultaneously engage and fix the keyways of multiple screw shaft lock caps. When disassembling and tightening, the force can be distributed to the keyway, reducing the risk of keyway damage. When rotating the retaining ring 21 to tighten the screw shaft lock cap, the force on the screw shaft lock cap can be more evenly distributed around the screw shaft lock cap, making the lock cap easier to disassemble and assemble. The clamping component 3 is set on the base 1. The clamping component 3 includes a clamping ring 31, which is coaxially arranged with the retaining ring 21. The clamping ring 31 is used to clamp the screw shaft and provide support force to the screw shaft, so that the lock cap can be easily removed from the screw shaft.

[0033] In some optional embodiments, the locking component further includes an arc-shaped plate 24, which is disposed on the front side of the retaining ring 21 and is slidably connected to the limiting post 23.

[0034] Specifically, when the limiting post 23 is struck, causing the retaining ring 21 to rotate the screw shaft locking cap, the arc plate 24 guides the retaining ring 21 and the limiting post 23. The limiting post 23 slides more stably along the arc plate 24, preventing deviation during the striking rotation.

[0035] In some optional embodiments, the arc plate 24 is provided with an arc groove that is recessed from the front to the back, and the limiting post 23 is provided with a first protrusion on the front, the first protrusion being slidably connected to the arc groove.

[0036] Specifically, the arc plate 24 is provided with an arc groove that is recessed from the front to the back, and the limiting post 23 is provided with a first protrusion on the front. The first protrusion is slidably connected to the arc groove, so that the limiting post 23 slides more stably along the arc plate 24 and avoids deviation when it is struck and rotated.

[0037] In some optional embodiments, the locking component further includes a limiting ring 25, which is respectively disposed on the front and back of the locking ring 21, and the limiting ring 25 is slidably connected to the limiting post 23.

[0038] Specifically, the limiting ring 25 is provided with an annular groove that is recessed from the back to the front, and the limiting post 23 is provided with a second protrusion on the back, which is slidably connected to the annular groove. The two limiting rings 25 are respectively provided on the front and back of the retaining ring 21. The two limiting rings 25 clamp the retaining ring 21 or the limiting post 23, and provide a guiding function in an annular shape, so that the limiting post 23 can slide smoothly in and out along the arc plate 24, making the rotation of the retaining ring 21 more stable.

[0039] In some alternative embodiments, one end of the lifting component is connected to the base 1, and the other end is connected to the limiting post 23.

[0040] Specifically, the lifting component can extend and retract its own length. Through the extension and retraction of the lifting component, the arc plate 24 and the retaining ring 21 can be moved up and down to adjust the height of the retaining ring 21 and the arc plate 24, so that the retaining ring 21 can be sleeved on the screw shaft lock cap.

[0041] In some optional embodiments, the lifting component further includes a lifting element 26, a first telescopic element 27, and a second telescopic element 28. The lifting element 26 is disposed between the first telescopic element 27 and the second telescopic element 28. One end of the lifting element 26, the first telescopic element 27, and the second telescopic element 28 is connected to the arc plate 24, and the other end of the lifting element 26, the first telescopic element 27, and the second telescopic element 28 is disposed on the base 1.

[0042] Specifically, both the first telescopic element 27 and the second telescopic element 28 are electric telescopic rods. The first telescopic element 27 and the second telescopic element 28 can extend and retract their own lengths, thereby driving the locking component to change its height. The lifting element 26 is disposed between the first telescopic element 27 and the second telescopic element 28. One end of the lifting element 26 is connected to the base 1, and the other end of the lifting element 26 is connected to the limiting post 23. The lifting element 26 supports the locking component, and the lifting element 26 can also adjust its own height, thereby adjusting the height of the locking component.

[0043] Furthermore, the lifting element 26, the first telescopic element 27, and the second telescopic element 28 work together to drive the locking component to change its height, thereby facilitating the fitting of the retaining ring 21 onto the screw shaft locking cap.

[0044] In some optional embodiments, the lifting element 26 includes a lifting plate 261, a polygonal lifter 262, and a fixing part 263. One end of the polygonal lifter 262 is connected to the lifting plate 261, and the other end of the polygonal lifter 262 is connected to the fixing part 263. The lifting plate 261 abuts against the arc plate 24, and the fixing part 263 is connected to the base 1.

[0045] Specifically, the polygonal lift 262 is quadrilateral and includes four rods of equal length. These four rods are connected sequentially to form the polygonal lift 262. Any two adjacent rods are rotatably connected. During use, the height of the polygonal lift 262 is changed by deforming the four sides. One corner of the polygonal lift 262 is connected to the support plate 261, and another corner is connected to the base 1. The other two corners of the polygonal lift 262 are arranged face-to-face and connected by reinforcing rods. The fixing part 263 is connected to the base 1 by a bolt assembly.

[0046] In some optional embodiments, the clamping component 3 includes a fixing frame 32, a fourth telescopic element 33 and a fifth telescopic element 34, the fourth telescopic element 33 and the fifth telescopic element 34 are arranged in parallel, one end of the fourth telescopic element 33 and the fifth telescopic element 34 is disposed on the base 1, the other end of the fourth telescopic element 33 and the fifth telescopic element 34 is connected to one end of the fixing frame 32, and the clamping ring 31 is disposed on the other end of the fixing frame 32.

[0047] Specifically, the fourth telescopic element 33 and the fifth telescopic element 34 are both electric telescopic rods. The fourth telescopic element 33 and the fifth telescopic element 34 can extend and retract their own length, thereby driving the fixed frame 32 to change its height. The fixed frame 32 is connected to the clamping ring 31, thereby driving the clamping ring 31 to change its height, thus ensuring that the clamping ring 31 and the retaining ring 21 are coaxially arranged, which facilitates the rotation of the locking cap relative to the screw shaft of the polymerization machine.

[0048] In some optional embodiments, the clamping ring 31 includes at least two arc-shaped segments, and multiple arc-shaped segments are connected in sequence to form the clamping ring 31, with any two adjacent arc-shaped segments being snap-fit ​​connected.

[0049] Specifically, the clamping ring 31 includes at least two arc-shaped segments, and any two adjacent arc-shaped segments are connected by a bolt assembly, which facilitates installation and disassembly, allows the clamping ring 31 to adapt to polymer machine screw shafts of various diameters, and facilitates the clamping ring 31 to fix the polymer machine screw shaft, thereby driving the polymer machine screw shaft to rotate.

[0050] In this utility model, the term "multiple" refers to at least two or more, unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for disassembling and assembling a screw shaft lock cap in a polyoxymethylene polymerizer, characterized in that, include: Base (1); A locking component (2) is disposed on the base (1) and includes a lifting component and a locking component. One end of the lifting component is disposed on the base (1), and the other end of the lifting component is connected to the locking component. The locking component includes a retaining ring (21), a connecting key (22), and a limiting post (23). A plurality of connecting keys (22) are evenly disposed on the inner circumference of the retaining ring (21), and a plurality of limiting posts (23) are evenly disposed on the outer circumference of the retaining ring (21). A clamping component (3) is disposed on the base (1) and can extend and retract at its own height. The clamping component (3) includes a clamping ring (31) which is coaxially disposed with the retaining ring (21).

2. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 1, characterized in that, The locking component also includes an arc plate (24), which is disposed on the front side of the retaining ring (21) and is slidably connected to the limiting post (23).

3. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 2, characterized in that, The arc plate (24) is provided with an arc groove that is recessed from the front to the back, and the limiting post (23) is provided with a first protrusion on the front, and the first protrusion is slidably connected to the arc groove.

4. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 1, characterized in that, The locking component also includes a limiting ring (25), which is respectively disposed on the front and back of the locking ring (21), and the limiting ring (25) is slidably connected to the limiting post (23).

5. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 4, characterized in that, The limiting ring (25) is provided with an annular groove that is recessed from the back to the front, and the limiting post (23) is provided with a second protrusion on the back, the second protrusion being slidably connected to the annular groove.

6. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 1, characterized in that, The lifting component further includes a lifting element (26), a first telescopic element (27), and a second telescopic element (28). The lifting element (26) is disposed between the first telescopic element (27) and the second telescopic element (28). One end of the lifting element (26), the first telescopic element (27), and the second telescopic element (28) is connected to the arc plate (24), and the other end of the lifting element (26), the first telescopic element (27), and the second telescopic element (28) is disposed on the base (1).

7. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 6, characterized in that, The lifting element (26) includes a lifting plate (261), a polygonal lifter (262), and a fixing part (263). One end of the polygonal lifter (262) is connected to the lifting plate (261), and the other end of the polygonal lifter (262) is connected to the fixing part (263). The lifting plate (261) abuts against the arc plate (24), and the fixing part (263) is connected to the base (1).

8. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 7, characterized in that, Both the first telescopic element (27) and the second telescopic element (28) are electric telescopic rods.

9. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 8, characterized in that, The clamping component (3) includes a fixed frame (32), a fourth telescopic element (33) and a fifth telescopic element (34). The fourth telescopic element (33) and the fifth telescopic element (34) are arranged in parallel. One end of the fourth telescopic element (33) and the fifth telescopic element (34) is disposed on the base (1). The other end of the fourth telescopic element (33) and the fifth telescopic element (34) is connected to one end of the fixed frame (32). The clamping ring (31) is disposed on the other end of the fixed frame (32).

10. The polyoxymethylene polymerizer screw shaft lock cap disassembly and assembly device according to claim 9, characterized in that, The clamping ring (31) includes at least two arc-shaped segments, and multiple arc-shaped segments are connected in sequence to form the clamping ring (31). Any two adjacent arc-shaped segments are detachably connected.

Images