Extrusion device for extruding a light cover
Patent Information
- Application Number
- CN202521942705.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-10
AI Technical Summary
[0003]基于上述，本发明人发现存在以下问题：现在的挤压光套与光杆的安装方式一般为螺旋焊接固定，焊接固定焊接工艺要求高，易出现咬边、焊瘤等问题，还常伴随未熔合、夹渣等隐患；同时焊缝检测难，因螺旋走向特殊，易有检测盲区，气孔、未焊透等缺陷难发现；后期维护麻烦，焊接处长期受交变载荷易生疲劳裂纹，导致母材损伤如光套内壁开裂、光杆表面破损，维修时无法通过简单补焊修复，只能对光套光杆整体组件进行更换，从而造成资源浪费
[0008]采用上述进一步方案的有益效果是，插杆位于插孔内的一端呈锥形与锥形插孔内壁抵压贴合，锥形配合形成的紧密贴合面可增强插杆与键轴的连接稳定性；从而使得限位环板、固定圈与键轴连接的稳定性，从而将挤压光套限位固定在一对限位环板之间，由于限位环板与键轴固定，限位环板又与挤压光套固定，从而确保挤压光套与键轴的同步转动。
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Figure CN224644352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extrusion sleeve technology, specifically to an extrusion device for easily installed extrusion sleeves. Background Technology
[0002] The extrusion sleeve is a core functional component of extrusion equipment (such as screw extruders and spiral extrusion dewatering machines). It is typically a cylindrical or irregularly shaped tubular structure, fitted onto the outside of the polished shaft of the equipment. Through its synergistic action with the polished shaft, it achieves process objectives such as extrusion, shaping, dewatering, or conveying of materials. The extrusion sleeve of the extrusion equipment is fitted onto the main shaft (polished shaft). It is not an externally welded continuous spiral blade; instead, each independent sleeve has a spiral protrusion on its outer surface. Eight sleeves with different functions are sequentially fixed to the main shaft by spiral welding, forming a complete and continuous spiral. The eight sleeves typically function in segments according to "feeding, extrusion, and discharge": the first few sleeves have a larger pitch and smaller outer diameter, mainly responsible for smoothly conveying raw materials into the equipment; the middle few sleeves have a smaller pitch or larger outer diameter, allowing the material to advance in a gradually narrowing space and be subjected to strong extrusion to expel moisture; the last few sections further compact the material and discharge the dry residue. The entire system, through its segmented structure, completes the entire process from raw material conveying to dewatering and then to slag discharge.
[0003] Based on the above, the inventors have discovered the following problems: Current installation methods for extruded bushings and bushings generally involve spiral welding. This welding process requires high precision and is prone to problems such as undercut and weld beads, often accompanied by issues like incomplete fusion and slag inclusions. Furthermore, weld inspection is difficult due to the unique spiral direction, which creates blind spots and makes defects like porosity and incomplete penetration hard to detect. Subsequent maintenance is troublesome; the weld joint is susceptible to fatigue cracks under long-term alternating loads, leading to damage to the base material, such as cracks in the inner wall of the bushing and surface damage to the bushing. Repairs cannot be achieved through simple welding; the entire bushing and bushing assembly must be replaced, resulting in resource waste.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an extrusion device that is easy to install to extrude the smooth sleeve, in order to achieve a more practical value. Utility Model Content
[0005] The purpose of this invention is to provide an easy-to-install extrusion device for extruding smooth sleeves, thereby solving the problems mentioned in the background art.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows: An easy-to-install extrusion device for extruding a smooth sleeve includes a sleeve assembly and a fixing assembly. The sleeve assembly includes an extrusion sleeve with a keyway inside. A key shaft is provided inside the keyway, and tapered holes are provided on both outer sides near the top and bottom surfaces of the extrusion sleeve. The fixing assembly includes a pair of limiting ring plates, which are respectively sleeved on the outside of the key shaft and located at both ends of the extrusion sleeve. A fixing ring is installed on the side of each limiting ring plate away from the extrusion sleeve. A mounting groove is provided on the side of each fixing ring away from the limiting ring plate. A hollow cylinder is installed inside each mounting groove. A through hole is provided at the opposite end of each hollow cylinder. A rod is provided inside each through hole, and the opposite end of each rod is placed in a pair of insertion holes.
[0007] Furthermore, the end of the insertion rod located inside the insertion hole is tapered, the insertion hole is a tapered hole, and the outer wall of the end of the insertion rod located inside the insertion hole abuts against and fits against the inner wall of the insertion hole.
[0008] The beneficial effect of adopting the above-mentioned further solution is that the end of the insertion rod located in the insertion hole is tapered and presses against the inner wall of the tapered insertion hole. The tight fit formed by the tapered fit can enhance the connection stability between the insertion rod and the key shaft. This makes the connection stability between the limiting ring plate, the fixing ring and the key shaft more stable, thereby limiting and fixing the extrusion sleeve between a pair of limiting ring plates. Since the limiting ring plate is fixed to the key shaft and the limiting ring plate is also fixed to the extrusion sleeve, the synchronous rotation of the extrusion sleeve and the key shaft is ensured.
[0009] Furthermore, the inner wall of the hollow cylinder is provided with four circumferential grooves, each of which is equipped with a slider. A circular plate is installed between the four sliders. One side of the circular plate is fixedly connected to the end of the insertion rod away from the insertion hole. A screw is threadedly connected between the circular plate and the insertion rod. One end of the screw is rotatably connected to the inner wall of the hollow cylinder. The screw extends through the hollow cylinder to the outside at the end away from the insertion hole.
[0010] The beneficial effect of adopting the above-mentioned further solution is that, through the cooperation of the screw, the circular plate, the slider and the groove, when the screw is rotated, the screw drives the circular plate to move axially along the hollow cylinder. The slider slides in the groove to restrict the rotation of the circular plate, so that the circular plate can only drive the insertion rod to smoothly extend and retract along the through hole, realizing the insertion and separation between the insertion rod and the insertion hole. During installation, the connection strength is ensured, and during disassembly, the insertion rod can be withdrawn from the insertion hole, improving the convenience of installation and maintenance.
[0011] Furthermore, the outer wall of the insertion rod slides in conjunction with the inner wall of the through hole, and the outer wall of the slider slides in conjunction with the inner wall of the groove.
[0012] The beneficial effects of adopting the above-mentioned further solution are that the sliding fit between the outer wall of the insertion rod and the inner wall of the through hole provides a stable guide for the axial movement of the insertion rod, preventing the insertion rod from shifting or shaking during the extension and retraction process, and ensuring that the insertion rod can be accurately aligned and inserted into the tapered insertion hole; the sliding fit between the outer wall of the slider and the inner wall of the slide groove restricts the movement trajectory of the circular plate, avoids the circular plate from shifting circumferentially with the rotation of the screw, and ensures that the circular plate drives the insertion rod to move smoothly.
[0013] Furthermore, the fixing ring has a notch, and the inner wall of the fixing ring and the limiting ring plate slides in fit with the outer wall of the key shaft.
[0014] The beneficial effect of adopting the above-mentioned further solution is that the notch on the fixing ring and the sliding fit between the inner wall of the fixing ring and the limiting ring plate and the outer wall of the key shaft allow the fixing ring and the limiting ring plate to be easily fitted onto the outside of the key shaft. The axial position of the fixing ring and the limiting ring plate on the key shaft can be adjusted according to the installation position of the extrusion sleeve to ensure that they can accurately fit the two ends of the extrusion sleeve and achieve effective limiting of the extrusion sleeve. At the same time, the sliding fit also reduces the frictional resistance during component installation and avoids damage to the key shaft or fixing ring caused by hard contact.
[0015] Furthermore, the extrusion sleeve has first screw holes on the top and bottom surfaces on both sides of the keyway, and a pair of limiting ring plates have second screw holes near the first screw holes. Bolts are threadedly connected between adjacent first and second screw holes.
[0016] The beneficial effect of adopting the above-mentioned further solution is that by connecting the second screw hole of the limiting ring plate to the first screw hole of the extrusion sleeve with bolts, the limiting ring plate and the extrusion sleeve are firmly fixed, so that the limiting ring plate can reliably limit the axial movement of the extrusion sleeve along the key shaft during the operation of the extrusion equipment, and ensure the stability of the extrusion operation; the threaded connection method is easy to disassemble, which facilitates the subsequent maintenance, replacement or repair of the extrusion sleeve.
[0017] Furthermore, both the bolt and the screw have an internal hexagonal groove at one end.
[0018] The beneficial effect of adopting the above-mentioned further solution is that the internal hex socket can be matched with the internal hex wrench. The internal hex socket design at one end of the bolt and screw is compatible with the internal hex wrench for operation. Compared with ordinary slotted or cross-head sockets, the internal hex structure can transmit greater torque, making it easier to tighten or loosen bolts and drive the screw to rotate stably, avoiding slippage.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This easy-to-install extrusion device extrudes a smooth sleeve, and a limiting ring plate is fitted over the key shaft. The limiting ring plate is located at the bottom end of the extrusion sleeve. An internal hex wrench drives a screw, which moves a circular plate axially along the hollow cylinder. The slider slides in the groove, which restricts the rotation of the circular plate, allowing the circular plate to only move the insertion rod smoothly along the through hole axially, thus achieving insertion between the insertion rod and the insertion hole near the bottom end of the key shaft. Then, the extrusion sleeve is fitted over the key shaft, and the limiting ring plate is fixed to the extrusion sleeve with bolts. Then, the limiting ring plate is fitted over the key shaft, located at the upper end of the extrusion sleeve. An internal hex wrench drives a screw, which moves a circular plate axially along the hollow cylinder. The slider slides in the groove, which restricts the rotation of the circular plate, allowing the circular plate to only move the insertion rod smoothly along the through hole axially, thus achieving insertion between the insertion rod and the insertion hole near the upper end of the key shaft. Attached Figure Description
[0020] Figure 1 A three-dimensional structural diagram of an extrusion sleeve for an extrusion device that is easy to install, provided by this utility model; Figure 2 An exploded three-dimensional structural diagram of a light sleeve assembly for extruding light sleeves using an extrusion device that is easy to install, as provided by this utility model; Figure 3 An exploded three-dimensional structural diagram of a fixing component for an extrusion sleeve of an extrusion device that is easy to install, provided by this utility model; Figure 4 A three-dimensional structural diagram of the limiting ring plate and fixing ring of the extrusion sleeve of an extrusion device that is easy to install, provided by this utility model; Figure 5 A cross-sectional view of a hollow cylinder for extruding a smooth sleeve using an extrusion device that is easy to install, as provided by this utility model.
[0021] In the diagram: 1. Optical sleeve assembly; 11. Extruded optical sleeve; 12. Keyway; 13. Key shaft; 14. Insertion hole; 15. First screw hole; 2. Fixing assembly; 21. Limiting ring plate; 22. Fixing ring; 23. Mounting groove; 24. Hollow cylinder; 25. Slide groove; 26. Slider; 27. Round plate; 28. Insert rod; 29. Screw; 210. Second screw hole; 211. Bolt; 212. Socket hexagonal groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-5 This utility model provides a technical solution: an extrusion device for easy installation of an extrusion sleeve, comprising a sleeve assembly 1 and a fixing assembly 2. The sleeve assembly 1 includes an extrusion sleeve 11, the inside of which is provided with a keyway 12, and inside which is provided with a key shaft 13. The key shaft 13 has tapered holes on both outer sides near the top and bottom surfaces of the extrusion sleeve 11. The fixing assembly 2 includes a pair of limiting ring plates 21, which are respectively sleeved on the outside of the key shaft 13 and located at both ends of the extrusion sleeve 11. Each of the two limiting ring plates 21 has a fixing ring 22 installed on the side away from the extrusion sleeve 11, and each fixing ring 22 has an installation groove 23 on the side away from the limiting ring plate 21. Hollow cylinders 24 are installed inside the grooves 23. Each hollow cylinder 24 has a through hole at one end facing the other. Each through hole has a rod 28 inside it. The opposite ends of the two rods 28 are placed in a pair of insertion holes 14. The end of the rod 28 in the insertion hole 14 is tapered and presses against the inner wall of the tapered insertion hole 14. The tight fit formed by the tapered fit can enhance the connection stability between the rod 28 and the key shaft 13. This ensures the stability of the connection between the limiting ring plate 21, the fixing ring 22 and the key shaft 13, thereby limiting and fixing the extrusion sleeve 11 between the pair of limiting ring plates 21. Since the limiting ring plate 21 is fixed to the key shaft 13 and the extrusion sleeve 11 is also fixed, the synchronous rotation of the extrusion sleeve 11 and the key shaft 13 is ensured.
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-5This utility model provides a technical solution: the insertion rod 28 is tapered at one end located inside the insertion hole 14, the insertion hole 14 is a tapered hole, the outer wall of the insertion rod 28 at one end located inside the insertion hole 14 is pressed against the inner wall of the insertion hole 14, the inner wall of the hollow cylinder 24 is provided with four sliding grooves 25 along the circumference, each of the four sliding grooves 25 is provided with a slider 26, a circular plate 27 is installed between the four sliders 26, one side of the circular plate 27 is fixedly connected to the end of the insertion rod 28 away from the insertion hole 14, a screw 29 is threadedly connected between the circular plate 27 and the insertion rod 28, one end of the screw 29 is rotatably connected to the inner wall of the hollow cylinder 24, the screw 29 is located away from the insertion hole 14. One end of the rod 28 extends through the hollow cylinder 24 to the outside. The outer wall of the rod 28 slides with the inner wall of the through hole. The outer wall of the slider 26 slides with the inner wall of the groove 25. The fixing ring 22 has a notch. The inner walls of the fixing ring 22 and the limiting ring plate 21 slide with the outer wall of the key shaft 13. The limiting ring plate 21 is fitted over the key shaft 13. The screw 29 is driven by an Allen wrench. The screw 29 drives the circular plate 27 to move axially along the hollow cylinder 24. The slider 26 slides in the groove 25 to restrict the rotation of the circular plate 27. The circular plate 27 can only drive the rod 28 to extend and retract smoothly along the through hole, so as to realize the insertion between the rod 28 and the insertion hole 14.
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1-5 This utility model provides a technical solution: the extrusion sleeve 11 has first screw holes 15 on both the top and bottom surfaces located on both sides of the keyway 12; a pair of limiting ring plates 21 each have second screw holes 210 near the first screw holes 15; bolts 211 are threadedly connected between adjacent first screw holes 15 and second screw holes 210; one end of the bolts 211 and the screw 29 each has an internal hexagonal groove 212; the second screw holes 210 of the limiting ring plates 21 are connected to the extrusion sleeve 11 by the bolts 211. The first screw hole 15 is threaded, which realizes the stable fixation of the limiting ring plate 21 and the extrusion sleeve 11, so that the limiting ring plate 21 can reliably limit the axial movement of the extrusion sleeve 11 along the key shaft 13 during the operation of the extrusion equipment, and ensure the stability of the extrusion operation. The design of the internal hexagonal groove 212 at one end of the bolt 211 and the screw 29 is adapted to the internal hexagonal wrench for operation, making it easier to tighten or loosen the bolt 211 and drive the screw 29 to rotate stably.
[0028] Specifically, the working principle of this easy-to-install extrusion equipment for extruding the smooth sleeve is as follows: During use, the limiting ring plate 21 is fitted over the key shaft 13, with the limiting ring plate 21 located at the bottom end of the extrusion smooth sleeve 11. An Allen wrench drives the screw 29, which in turn moves the circular plate 27 axially along the hollow cylinder 24. The slider 26 slides within the groove 25, restricting the rotation of the circular plate 27. This allows the circular plate 27 to only smoothly extend and retract the insertion rod 28 along the through hole, achieving insertion of the insertion rod 28 into the insertion hole 14 near the bottom end of the key shaft 13. Then, the extrusion smooth sleeve 11 is fitted over... Outside the key shaft 13, the bolt 211 is tightened with an Allen wrench to fix the limiting ring plate 21 to the extrusion sleeve 11. Then, the limiting ring plate 21 is placed on the outside of the key shaft 13. The limiting ring plate 21 is located at the upper end of the extrusion sleeve 11. The screw 29 is driven by an Allen wrench. The screw 29 drives the circular plate 27 to move axially along the hollow cylinder 24. The slider 26 slides in the groove 25 to restrict the rotation of the circular plate 27, so that the circular plate 27 can only drive the insertion rod 28 to move smoothly along the through hole axially, so as to realize the insertion of the insertion rod 28 into the insertion hole 14 near the upper end of the key shaft 13.
[0029] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. Furthermore, since this application is mainly used to protect mechanical devices, the control methods and circuit connections will not be explained in detail in this application.
Claims
1. An easy-to-install extrusion device for extruding smooth sleeves, characterized in that, The assembly includes a light sleeve assembly (1) and a fixing assembly (2). The light sleeve assembly (1) includes an extruded light sleeve (11), the inside of which is provided with a keyway (12). The inside of the keyway (12) is provided with a key shaft (13). The key shaft (13) has tapered holes on both sides near the top and bottom surfaces of the extruded light sleeve (11). The fixing assembly (2) includes a pair of limiting ring plates (21). The pair of limiting ring plates (21) are respectively sleeved on the outside of the key shaft (13), and the pair of limiting ring plates (21) are respectively positioned... At both ends of the extrusion sleeve (11), a pair of limiting ring plates (21) are each equipped with a fixing ring (22) on the side away from the extrusion sleeve (11). The fixing ring (22) is provided with a mounting groove (23) on the side away from the limiting ring plate (21). Hollow cylinders (24) are installed inside the pair of mounting grooves (23). Through holes are provided at the opposite ends of the two hollow cylinders (24). Insert rods (28) are provided inside the two through holes. The opposite ends of the two insert rods (28) are respectively placed in a pair of insertion holes (14).
2. The extrusion sleeve of the easy-to-install extrusion equipment according to claim 1, characterized in that, The insertion rod (28) is tapered at one end located inside the insertion hole (14), the insertion hole (14) is a tapered hole, and the outer wall of the insertion rod (28) at one end located inside the insertion hole (14) presses against and fits against the inner wall of the insertion hole (14).
3. The extrusion sleeve of the easy-to-install extrusion equipment according to claim 1, characterized in that, The inner wall of the hollow cylinder (24) is provided with four circumferential grooves (25), and each of the four grooves (25) is provided with a slider (26). A circular plate (27) is installed between the four sliders (26). One side of the circular plate (27) is fixedly connected to the end of the insertion rod (28) away from the insertion hole (14). A screw (29) is threaded between the circular plate (27) and the insertion rod (28). One end of the screw (29) is rotatably connected to the inner wall of the hollow cylinder (24). The screw (29) extends through the hollow cylinder (24) to the outside at the end away from the insertion hole (14).
4. The extrusion sleeve of the easy-to-install extrusion equipment according to claim 3, characterized in that, The outer wall of the insert (28) slides in conjunction with the inner wall of the through hole, and the outer wall of the slider (26) slides in conjunction with the inner wall of the groove (25).
5. The extrusion sleeve of an easy-to-install extrusion device according to claim 1, characterized in that, The fixing ring (22) has a notch, and the inner wall of the fixing ring (22) and the limiting ring plate (21) slides with the outer wall of the key shaft (13).
6. The extrusion equipment for extruding smooth sleeves according to claim 1, characterized in that, The extrusion sleeve (11) has a first screw hole (15) on the top and bottom surfaces on both sides of the keyway (12). A pair of limiting ring plates (21) have a second screw hole (210) near the first screw hole (15). A bolt (211) is threaded between the adjacent first screw hole (15) and second screw hole (210).
7. The extrusion equipment for extruding smooth sleeves according to claim 6, characterized in that, Both the bolt (211) and the screw (29) have an internal hexagonal groove (212) at one end.