Split type drawing machine
By designing the gearbox with a detachable upper, middle, and lower housing and using structures such as bearing support seats and connecting lugs, the problems of difficult assembly of the drawing machine and bearing deformation were solved, achieving a high-precision original wire drawing effect.
Patent Information
- Application Number
- CN202423139161.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The existing drawing machine has difficulty assembling the drawing rollers, which can easily lead to bearing deformation and affect the quality and consistency of the raw yarn.
The gearbox is designed with three detachable housings: upper, middle, and lower. By installing the bearings and gear shafts in layers and using structures such as bearing support seats and connecting lugs, the bearings are ensured to be free from deformation, reducing assembly difficulty and maintaining high precision.
This achieved high-precision operation of the drafting rollers, reduced assembly difficulty, and improved the quality and consistency of the raw yarn.
Smart Images
Figure CN223561799U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fiber raw yarn production technical field especially relates to a split type draft machine. BACKGROUND
[0002] With the increasing demand of market for carbon fiber, glass fiber and other fiber materials, people's quality requirement for raw yarn is more and more strict, and the draft machine is indispensable equipment in the process of processing fiber raw yarn, and a draft machine is usually composed of odd number draft rollers such as 5, 7, 9, and the installation precision of each draft roller determines the consistency of the raw yarn drawn by the draft machine.
[0003] One end of the draft roller of the existing draft machine is fixed with a rotating shaft part, the rotating shaft part of each draft roller penetrates through the gear box and is rotatably connected with the box body of the gear box, each rotating shaft part in the gear box is driven through gear meshing, in order to ensure that the draft roller has the smallest radial runout range during rotation, the bearing hole on the box body of the gear box and the bearing need to be matched closely, which will inevitably lead to the extremely difficult assembly of the draft roller, and in the assembly process, the bearing is easily subjected to axial stress due to deviation, which causes slight deformation of the bearing, thereby inducing the radial runout of the subsequent draft roller and causing the increase of the scrap rate of the raw yarn. SUMMARY
[0004] The utility model discloses a split type draft machine to solve the shortcomings in the prior art, which reduces the difficulty of assembly, ensures the minimum radial runout of the draft roller, and effectively ensures the high-precision quality of the raw yarn.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A split type draft machine, comprising a motor, a speed reducer, a gear box and a plurality of draft rollers penetrating through the rotating shaft part and arranged on the gear box, the motor, the speed reducer and the rotating shaft part of any draft roller are sequentially connected, the gear box comprises an upper box body, a middle box body and a lower box body which are sequentially butted in the vertical direction, and a connecting piece for connecting the upper box body, the middle box body and the lower box body, a semicircular hole is arranged on the butt joint surface of the upper box body, the middle box body and the lower box body, and the semicircular holes are butted two by two to form bearing holes for installing bearings. The gear box is arranged as three detachable box bodies which are sequentially butted, during assembly, only need to sequentially place the rotating shaft part provided with bearings and gears in the semicircular hole of the corresponding box body in layers, and then connect and fix the adjacent two box bodies, which reduces the difficulty of assembly under the requirement of minimizing the gap between the bearing hole and the bearing, and since the rotating shaft part does not generate axial force on the bearing during the assembly process, the bearing is not deformed, and the draft roller can always maintain high-precision operation, effectively ensuring the drawing quality of the raw yarn.
[0007] Each of the half-round holes near the side of the drafting roller extends to the inside of the gear box to form a bearing support seat, and a connecting lug is arranged at the position where the bearing support seat is flush with the abutting surface, and the connecting lugs are abutted in pairs in the vertical direction and fixed through a bolt assembly.
[0008] A reinforcing rib is fixed outside the bearing support seat.
[0009] The upper box body and the lower box body are provided with a plurality of through holes in the circumferential direction, the middle box body is provided with a plurality of thread grooves corresponding to the through holes in the circumferential direction, and the connecting piece is a plurality of long shaft bolts, each of which is connected with the thread groove through the through hole.
[0010] A half-ring clamping groove is arranged in the inside of each of the half-round holes away from the side of the drafting roller and the inside of the bearing support seat, and the half-ring clamping groove is arranged near the inside of the gear box and forms a blocking ring clamping groove for installing a bearing blocking ring by being abutted in pairs.
[0011] The gear box further comprises a top cover arranged on the top of the upper box body, and a mounting plate is fixed at the four corner positions on the inside of the top of the upper box body, and the top cover is fixedly connected with the mounting plate.
[0012] The drafting roller is detachably connected with the rotating shaft part, one end of the rotating shaft part connected with the drafting roller has a tapered column with gradually reduced size, the tapered column has an external thread part extending outward at the small end, one end of the drafting roller is provided with an opening, the other end of the drafting roller has a tapered hole matched with the tapered column, and the external thread part is connected with a fastening nut after penetrating through the tapered hole.
[0013] The utility model has the following beneficial effects:
[0014] The gear box is arranged as three detachable box bodies which are abutted in sequence, during assembly, the rotating shaft part provided with the bearing and the gear is sequentially arranged in the half-round holes of the corresponding box bodies in layers, and then the adjacent two box bodies are connected and fixed, the assembly difficulty is reduced under the requirement of minimizing the gap between the bearing through hole and the bearing, the rotating shaft part does not generate axial force on the bearing during the assembly process, the bearing is not deformed, the drafting roller can always maintain high-precision operation, and the drafting quality of the raw silk is effectively ensured. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of not paying.
[0016] Figure 1 The structure schematic view of the present application;
[0017] Figure 2 The structure schematic view of the gear box in the present application;
[0018] Figure 3 The structure schematic view of the upper box body in the present application;
[0019] Figure 4 The structure schematic view of the middle box body in the present application;
[0020] Figure 5 The structure schematic view of the lower box body in the present application;
[0021] Figure 6 The connection schematic view of the drafting roller and the rotating shaft part in the present application.
[0022] 1, motor; 2, speed reducer; 3, gear box; 301, upper box body; 302, middle box body; 303, lower box body; 304, top cover; 4, drafting roller; 401, rotating shaft part; 402, front bearing; 403, rear bearing; 404, bearing blocking ring; 405, conical column; 406, external thread part; 407, fastening nut; 5, long shaft bolt; 501, through hole; 502, thread groove; 6, semicircular hole; 7, bearing support seat; 701, connecting lug; 702, connecting hole; 8, half ring clamping groove; 9, reinforcing rib; 10, mounting plate. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.
[0025] As shown in Figure 1 A split type drafting machine, comprising a motor 1, a speed reducer 2, a gear box 3 and a plurality of drafting rollers 4 which are arranged through the shaft portion 401 of the gear box 3, the motor 1, the speed reducer 2 and the shaft portion 401 of any of the drafting rollers 4 are sequentially connected, specifically, in the embodiment, the output shaft of the motor 1 is connected with the input shaft of the speed reducer 2, the output shaft of the speed reducer 2 is connected with the end of the shaft portion 401 of any of the drafting rollers 4 through a shaft coupling, wherein the number of the drafting rollers 4 can be 5, 7, 9, arranged in two layers in the number of 2 / 3, 3 / 4, 4 / 5 respectively, as shown in Figure 2 In the embodiment, taking 5 groups of drafting rollers 4 as an example, the gear box 3 comprises an upper box body 301, a middle box body 302 and a lower box body 303 which are sequentially butted in the vertical direction, and a connecting piece for connecting the upper box body 301, the middle box body 302 and the lower box body 303, the butt joint surface of the upper box body 301, the middle box body 302 and the lower box body 303 is provided with a semicircular hole 6, and the semicircular holes 6 are butted two by two to form bearing through holes for installing bearings; during assembly, only the shaft portion 401 of the drafting roller 4 provided with bearings and gears is sequentially placed in the semicircular hole 6 of the corresponding box in layers, and then the adjacent two boxes are connected and fixed, which reduces the difficulty of assembly under the requirement of minimizing the gap between the bearing through hole and the bearing, and since the shaft portion 401 does not generate axial force on the bearing during assembly, the bearing is not deformed, and the drafting roller 4 can always maintain high-precision operation, effectively ensuring the traction quality of the raw silk.
[0026] Further preferably, in order to improve the support effect of the bearing through hole on the end of the shaft portion 401 close to the drafting roller 4, as shown in Figures 3-5 The end of each semicircular hole 6 close to the drafting roller 4 extends to the inside of the gear box 3 to form a bearing support seat 7, and preferably, as shown in Figure 3As shown, the reinforcing ribs 9 are fixed outside the bearing support seat 7 to further improve the supporting force of the bearing support seat 7; further, the bearing support seat 7 is provided with a connecting lug 701 at a position flush with the butt joint surface, the connecting lug 701 is butted in pairs in the vertical direction and then fixed by a bolt assembly, thereby ensuring the butt joint effect of the bearing support seat 7, so that the bearing located inside the bearing support seat 7 has high stability, wherein the bolt assembly is a bolt and a nut matched therewith, a connecting hole 702 is formed in the connecting lug 701 for the bolt to pass through, while connecting the adjacent boxes by the connecting piece, the bolt is matched and connected with the nut after penetrating the connecting holes 702 of the two connecting lugs 701 in the butt joint position, thereby completing the butt joint operation between the adjacent boxes.
[0027] Among them, the connecting piece is a plurality of long shaft bolts 5, the upper box 301 and the lower box 303 are provided with a plurality of through holes 501 in the circumferential direction, and the upper and lower butt joint surfaces of the middle box 302 are provided with a plurality of thread grooves 502 corresponding to the through holes 501 in the circumferential direction, and each long shaft bolt 5 is matched and connected through the through hole 501 and the thread groove 502; specifically, as Figure 3 and Figure 5 As shown, at least three through holes 501 are distributed on each wide side in the width direction of the upper box 301 and the lower box 303, and on the wide side of the middle box 302, there are also three corresponding groups of thread grooves 502, along the length direction of the upper box 301, since the corresponding semicircular holes 6 are two, there are 3 through holes 501 between the two semicircular holes 6 and on both sides thereof, along the length direction of the lower box 303, since the corresponding semicircular holes 6 are three, there are two through holes 501 between the adjacent two semicircular holes 6, and on the long side of the middle box 302, there are corresponding number of thread grooves 502, in summary, 10 long shaft bolts 5 are needed between the lower box 303 and the middle box 302, and 12 long shaft bolts 5 are needed between the middle box 302 and the upper box 301.
[0028] Further preferably, a semicircular clamping groove 8 is formed in the inner side of each semicircular hole 6 away from the drawing roller 4 and the inner side of the bearing support seat 7, the semicircular clamping groove 8 is arranged close to the inner side of the gear box 3, and two are butted to form a bearing retainer ring 404 mounting clamping groove, wherein the bearing retainer ring 404 can not only be used as a limiting part to limit the axial displacement of the bearing, but also be used as a positioning part for mounting the shaft part 401 on the semicircular hole 6, thereby further improving the precision of assembly.
[0029] As shown in Figure 2 and Figure 3 The gear box 3 further comprises a top cover 304 located at the top of the upper box 301, and the mounting plate 10 is fixed at the four corner positions inside the top of the upper box 301, and the top cover 304 is fixedly connected with the mounting plate 10.
[0030] In order to facilitate the disassembly and maintenance of the drafting roller 4, while ensuring that its running accuracy is not affected, as shown in the drawings, the drafting roller 4 is detachably connected with the rotating shaft part 401, the rotating shaft part 401 has a tapered column 405 with gradually reduced size at one end connected with the drafting roller 4, the small end of the tapered column 405 extends outwardly with an external thread part 406, one end of the drafting roller 4 is provided with an opening, and the other end of the drafting roller 4 has a tapered hole matched with the tapered column 405, and the external thread part 406 is connected with a fastening nut 407 after passing through the tapered hole. Figure 6
[0031] In the implementation of the above technical solution, the upper box 301, the middle box 302 and the lower box 303 are processed according to the drawings, the front bearing 402, the gear and the rear bearing 403 are sequentially arranged on the rotating shaft part 401 of each drafting roller 4, the lower box 303 is fixed on a workbench / work support, three drafting rollers 4 in the first layer are sequentially lifted, the front bearing 402 and the rear bearing 403 on the rotating shaft part 401 are respectively arranged on the bearing support seat 7 and the semicircular hole 6 on the lower box 303, the middle box 302 is butted with the lower box 303, and the corresponding 10 long shaft bolts 5 are sequentially arranged, and the connecting ears 701 at the butting position of the middle box 302 and the lower box 303 are connected and fixed by using bolts and nuts; two drafting rollers 4 in the second layer are sequentially lifted, the front bearing 402 and the rear bearing 403 on the rotating shaft part 401 are respectively arranged on the bearing support seat 7 and the semicircular hole 6 on the middle box 302, the upper box 301 is butted with the middle box 302, and the corresponding 12 long shaft bolts 5 are sequentially arranged, and the connecting ears 701 at the butting position of the upper box 301 and the middle box 302 are connected and fixed by using bolts and nuts, and finally the top cover 304 is fixed on the top of the upper box 301, the assembly of the drafting roller 4 and the entire gear box 3 is completed, in the entire assembly process, the assembly difficulty is greatly reduced compared with the prior art, and in terms of accuracy, taking the 600mm long drafting roller 4 for stretching the carbon fiber wire as an example, the radial runout of the drafting roller 4 during the operation of the device is only 0.003mm, while in the prior art, due to the limitation of the installation difficulty and the influence of the micro-deformation of the bearing, the radial runout of the drafting roller 4 during the operation is more than 0.03mm, so the device effectively guarantees the high-precision quality requirement of the wire, and it is worth mentioning that the device is not only suitable for carbon fiber wire processing, but also suitable for other fibers, such as glass fiber, quartz fiber, aramid fiber, etc.
[0032] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A split type drawing frame comprising a motor, a speed reducer, a gear box and a plurality of drawing rollers which are disposed through shaft portions of the drawing rollers on the gear box, the motor, the speed reducer and the shaft portions of any one of the drawing rollers being sequentially drivingly connected, characterized in that, The gear box comprises an upper box body, a middle box body and a lower box body which are sequentially butted in a vertical direction, and a connecting piece for connecting the upper box body, the middle box body and the lower box body, wherein half-circle holes are arranged on the butting faces of the upper box body, the middle box body and the lower box body, and the half-circle holes are butted in pairs to form bearing through holes for installing bearings.
2. A split draft horse according to claim 1, characterized in that One end of each of the half-circle holes near the side of the drafting roller extends to the inner side of the gear box to form a bearing support seat, and a connecting lug is arranged on the position of the bearing support seat flush with the butting face, and the connecting lugs are butted in pairs in the vertical direction and fixed by bolt assemblies.
3. A split draft horse according to claim 2, characterized in that A reinforcing rib is fixed outside the bearing support seat.
4. A split draft horse according to claim 1 or 2, characterized in that The upper box body and the lower box body are provided with a plurality of through holes in the circumferential direction, the middle box body is provided with a plurality of thread grooves corresponding to the through holes in the circumferential direction, and the connecting piece is a plurality of long shaft bolts, each of which is connected with the thread groove through the through hole.
5. The split draft horse of claim 2, wherein, The inner side of each of the half-circle holes away from the side of the drafting roller and the inner side of the bearing support seat are provided with half-ring clamping grooves, the half-ring clamping grooves are arranged close to the inner side of the gear box, and the half-ring clamping grooves are butted in pairs to form a blocking ring clamping groove for installing a blocking ring.
6. A split draft horse according to claim 1 or 2 or 5, characterized in that, The gear box further comprises a top cover arranged on the top of the upper box body, and a mounting plate is fixed at the four corner positions of the inner side of the top of the upper box body, and the top cover is fixedly connected with the mounting plate.
7. A split draft horse according to claim 1 or 2 or 5, characterized in that, The drafting roller is detachably connected with a rotating shaft part, one end of the rotating shaft part connected with the drafting roller has a tapered column with gradually reduced size, the tapered column has an outer thread part extending outward at the small end, one end of the drafting roller is provided with an opening, the other end of the drafting roller has a tapered hole matched with the tapered column, and the outer thread part is connected with a fastening nut after penetrating through the tapered hole.