Main shaft structure of stranding machine

Abstract

The application discloses a main shaft structure of a stranding machine, and relates to the technical field of cable manufacturing equipment, which comprises a rack, a positioning ring welded on the rack, at least one main shaft unit detachably arranged on the positioning ring and a brake disc detachably arranged on the main shaft unit, wherein the main shaft unit comprises a positioning sleeve, and at least part of the outer circumferential surface of the positioning sleeve is matched with the inner circumferential surface of the positioning ring, so that the main shaft unit is detachably arranged on the positioning ring. The main shaft structure of the stranding machine can realize quick dismounting and replacement of the main shaft.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing equipment technology, and in particular to a stranding machine spindle structure. Background Technology

[0002] Current stranding machine spindle systems often experience jamming due to high resistance and long operating times caused by thermal expansion, leading to significantly reduced efficiency and impacting strand quality. To ensure smooth spindle operation and improve strand quality, the spindle is typically disassembled and replaced with a cooled spindle after a period of operation. However, the current spindle replacement process is complex, requiring the disassembly of numerous parts, which hinders disassembly and reassembly speed and further reduces stranding efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a stranding machine spindle structure that enables quick disassembly and replacement of the spindle.

[0004] The above-mentioned objectives of the present invention can be achieved by the following technical solutions:

[0005] This invention provides a stranding machine spindle structure, comprising:

[0006] frame;

[0007] The positioning ring is welded to the frame;

[0008] At least one spindle unit is detachably mounted on the locating ring;

[0009] The brake disc is detachably mounted on the spindle unit;

[0010] The spindle unit includes a positioning sleeve, at least a portion of the outer peripheral surface of the positioning sleeve mates with the inner peripheral surface of the positioning ring, so that the spindle unit is detachably mounted on the positioning ring.

[0011] In a preferred embodiment, there are multiple spindle units, and the multiple spindle units are detachably and time-divisionally mounted on the positioning ring;

[0012] The plurality of spindle units are distinguished by size and at least form a first spindle unit and a second spindle unit. The first spindle unit includes a first spindle, and the second spindle unit includes a second spindle. The outer diameter of the first spindle is larger than the outer diameter of the second spindle, so that the rated load force of the first spindle unit is greater than the rated load force of the second spindle unit.

[0013] In a preferred embodiment, the first spindle unit includes:

[0014] The first positioning sleeve is detachably mounted on the positioning ring;

[0015] The first bearing assembly is disposed inside the first positioning sleeve, and the first main shaft is disposed on the first bearing assembly;

[0016] The second spindle unit includes:

[0017] The second positioning sleeve is detachably mounted on the positioning ring;

[0018] The second bearing assembly is disposed inside the second positioning sleeve, and the second main shaft is disposed on the second bearing assembly;

[0019] The outer diameters of the first positioning sleeve and the second positioning sleeve are the same, so that both the first positioning sleeve and the second positioning sleeve can cooperate with the positioning ring.

[0020] In a preferred embodiment, the inner diameter of the first bearing assembly is larger than the inner diameter of the second bearing assembly, the outer diameter of the first bearing assembly is larger than the outer diameter of the second bearing assembly, and the inner diameter of the first positioning sleeve is larger than the inner diameter of the second positioning sleeve, so that the first spindle and the second spindle are positioned respectively.

[0021] In a preferred embodiment, the spindle unit includes:

[0022] Two bearings are disposed inside the positioning sleeve;

[0023] The main shaft is mounted on two of the bearings, and the middle part of the main shaft extends radially outward to form a locating shoulder. The brake disc is connected to the rear end of the main shaft by multiple bolts.

[0024] A bearing positioning ring is sleeved on the main shaft, and the rear end of the bearing positioning ring abuts against the brake disc;

[0025] The positioning sleeve extends radially inward to form a bearing positioning part. The two ends of one bearing abut against the front end of the bearing positioning part and the positioning shoulder, respectively, and the two ends of the other bearing abut against the rear end of the bearing positioning part and the bearing positioning ring, respectively.

[0026] In a preferred embodiment, the front end of the positioning sleeve extends radially outward to form a fixing portion;

[0027] The spindle unit includes:

[0028] A front end cover is fitted onto the main shaft and covers the fixing part of the positioning sleeve. Multiple bolts pass through the front end cover and the fixing part and are connected inside the positioning ring.

[0029] The rear end cover is fitted onto the bearing positioning ring and covers the rear end of the positioning sleeve. Multiple bolts pass through the rear end cover and are connected inside the positioning sleeve.

[0030] In a preferred embodiment, the spindle has a connection portion for connecting to an external device on the front side of the positioning shoulder, and the surface of the connection portion is recessed toward the axis of the spindle to form a drive keyway.

[0031] In a preferred embodiment, the length of the connecting portion is less than or equal to 35% of the total length of the spindle.

[0032] In a preferred embodiment, the spindle unit further includes an oil seal screw, which is sealed on the side wall of the positioning sleeve to block the lubricating oil inside the positioning sleeve.

[0033] In a preferred embodiment, the outer circumferential surface of the positioning sleeve and the inner circumferential surface of the positioning ring are in a basic hole transition fit.

[0034] The features and advantages of this invention are:

[0035] The stranding machine spindle structure provided in this embodiment of the invention fixes the positioning ring to the frame and mounts the entire spindle unit on the positioning ring. When the spindle needs to be disassembled and replaced, simply remove the brake disc connected to the rear end of the spindle unit and remove a few fixing bolts to remove the entire spindle unit. A new spindle unit can then be quickly replaced to continue stranding operations, significantly improving the speed of spindle replacement and increasing work efficiency. Furthermore, the stranding machine spindle structure provided in this embodiment of the invention only requires precision machining of the positioning ring on the frame to achieve accurate positioning of the spindle system. After prolonged wear and tear, only the positioning ring needs to be replaced, greatly reducing material waste. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 The diagram shown is an overall structural schematic of the stranding machine spindle structure of the present invention.

[0038] Figure 2 The diagram shown is a schematic diagram of the first spindle unit structure of the stranding machine spindle structure of the present invention.

[0039] Figure 3The diagram shown is a schematic diagram of the second spindle unit structure of the stranding machine spindle structure of the present invention. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "installed," "connected," and "connected" should be interpreted broadly. For example, it can refer to a mechanical connection or an electrical connection, or it can refer to the internal connection of two elements. It 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 according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0041] Please see Figure 1 As shown, the present invention provides a stranding machine spindle structure, comprising: a frame 1; a positioning ring 2 welded to the frame 1; at least one spindle unit 3 detachably mounted on the positioning ring 2; and a brake disc 4 detachably mounted on the spindle unit 3; wherein the spindle unit 3 includes a positioning sleeve 31, at least a portion of the outer peripheral surface of the positioning sleeve 31 engaging with the inner peripheral surface of the positioning ring 2, so that the spindle unit 3 is detachably mounted on the positioning ring 2.

[0042] To further illustrate the stranding machine spindle structure of this embodiment of the invention, its specific structure, connection relationships, and dimensional limitations are further described below, wherein:

[0043] In a preferred embodiment, the spindle unit 3 includes: two bearings 32 disposed within the positioning sleeve 31; a spindle 33 disposed on the two bearings 32, with the middle portion of the spindle 33 extending radially outward to form a positioning shoulder 331; a brake disc 4 connected to the rear end of the spindle 33 by multiple bolts; and a bearing positioning ring 34 sleeved on the spindle 33, with the rear end of the bearing positioning ring 34 abutting against the brake disc 4; wherein, the middle portion of the positioning sleeve 31 extends radially inward to form a bearing positioning portion 311, with the two ends of one bearing 32 abutting against the front end of the bearing positioning portion 311 and the positioning shoulder 331 respectively, and the two ends of the other bearing 32 abutting against the rear end of the bearing positioning portion 311 and the bearing positioning ring 34 respectively.

[0044] In a preferred embodiment, the front end of the positioning sleeve 31 extends radially outward to form a fixing part 312; the main spindle unit 3 includes: a front end cover 35, which is sleeved on the main spindle 33 and covers the fixing part 312 of the positioning sleeve 31, and multiple bolts pass through the front end cover 35 and the fixing part 312 and are connected inside the positioning ring 2; and a rear end cover 36, which is sleeved on the bearing positioning ring 34 and covers the rear end of the positioning sleeve 31, and multiple bolts pass through the rear end cover 36 and are connected inside the positioning sleeve 31.

[0045] In a preferred embodiment, the spindle 33 has a connection portion 332 for connecting to an external device on the front side of the positioning shoulder 331, and the surface of the connection portion 332 is recessed toward the axis of the spindle 33 to form a drive keyway.

[0046] In a preferred embodiment, the length of the connecting portion 332 is less than or equal to 35% of the total length of the spindle 33.

[0047] In a preferred embodiment, the spindle unit 3 further includes an oil seal screw 37, which is sealed on the side wall of the positioning sleeve 31 to block the lubricating oil inside the positioning sleeve 31.

[0048] In a preferred embodiment, the outer peripheral surface of the positioning sleeve 31 and the inner peripheral surface of the positioning ring 2 are in a basic hole transition fit.

[0049] In practical use, multiple spindle units 3 can be set up for quick replacement based on different requirements for stranding force and stranding speed, so as to improve the efficiency of stranding work.

[0050] Please refer to the following: Figure 2 and Figure 3 As shown, in a preferred embodiment, there are multiple spindle units 3, which are detachably mounted on the positioning ring 2 in a time-sharing manner. The multiple spindle units 3 are distinguished by size and at least form a first spindle unit 3a and a second spindle unit 3b. The first spindle unit 3a includes a first spindle 33a, and the second spindle unit 3b includes a second spindle 33b. The outer diameter of the first spindle 33a is larger than the outer diameter of the second spindle 33b, so that the rated load force of the first spindle unit 3a is greater than the rated load force of the second spindle unit 3b.

[0051] In a preferred embodiment, the first spindle unit 3a includes: a first positioning sleeve 31a, detachably mounted on the positioning ring 2; a first bearing assembly 32a, disposed within the first positioning sleeve 31a, and a first spindle 33a mounted on the first bearing assembly 32a; the second spindle unit 3b includes: a second positioning sleeve 31b, detachably mounted on the positioning ring 2; a second bearing assembly 32b, disposed within the second positioning sleeve 31b, and a second spindle 33b mounted on the second bearing assembly 32b; wherein the outer diameter of the first positioning sleeve 31a and the outer diameter of the second positioning sleeve 31b are the same, so that both the first positioning sleeve 31a and the second positioning sleeve 31b can cooperate with the positioning ring 2.

[0052] In a preferred embodiment, the inner diameter of the first bearing assembly 32a is larger than the inner diameter of the second bearing assembly 32b, the outer diameter of the first bearing assembly 32a is larger than the outer diameter of the second bearing assembly 32b, and the inner diameter of the first positioning sleeve 31a is larger than the inner diameter of the second positioning sleeve 31b, so that the first spindle 33a and the second spindle 33b are positioned respectively.

[0053] Based on the above structural description, the stranding machine spindle 33 structure of this embodiment of the invention has the following beneficial effects:

[0054] The stranding machine spindle 33 structure provided in this embodiment of the invention fixes the positioning ring 2 to the frame 1, and the spindle unit 3 is entirely mounted on the positioning ring 2. When it is necessary to disassemble and replace the spindle 33, simply remove the brake disc 4 connected to the rear end of the spindle unit 3 and remove several fixing bolts, and the spindle unit 3 can be taken out as a whole and quickly replaced with a new spindle unit 3 to continue stranding work, thereby greatly improving the speed of spindle 33 replacement and increasing work efficiency. In addition, the stranding machine spindle 33 structure provided in this embodiment of the invention only requires precision machining of the positioning ring 2 on the frame 1 to achieve precise positioning of the spindle 33 system. After long-term wear and tear, only the positioning ring 2 needs to be replaced, thereby greatly reducing material waste.

[0055] The above are merely embodiments of the present invention. Those skilled in the art can make various modifications or variations to the embodiments of the present invention based on the content disclosed in the application documents without departing from the spirit and scope of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A stranding machine spindle structure, characterized in that, include: frame; The positioning ring is welded to the frame; At least one spindle unit is detachably mounted on the locating ring; The brake disc is detachably mounted on the spindle unit; The spindle unit includes a positioning sleeve, at least a portion of the outer circumferential surface of which mates with the inner circumferential surface of the positioning ring, so that the spindle unit is detachably mounted on the positioning ring; the front end of the positioning sleeve extends radially outward to form a fixing part; the spindle unit includes: two bearings disposed within the positioning sleeve; a spindle disposed on the two bearings, the middle portion of which extends radially outward to form a positioning shoulder; the brake disc is connected to the rear end of the spindle by multiple bolts; and a bearing positioning ring sleeved on the spindle, the rear end of which abuts against the brake disc. A front end cover is fitted onto the main shaft and covers the fixing part of the positioning sleeve. Multiple bolts pass through the front end cover and the fixing part and are connected inside the positioning ring. A rear end cover is fitted onto the bearing positioning ring and covers the rear end of the positioning sleeve. Multiple bolts pass through the rear end cover and are connected inside the positioning sleeve. The middle part of the positioning sleeve extends radially inward to form a bearing positioning part. The two ends of one bearing abut against the front end of the bearing positioning part and the positioning shoulder, respectively. The two ends of the other bearing abut against the rear end of the bearing positioning part and the bearing positioning ring, respectively.

2. The stranding machine spindle structure as described in claim 1, characterized in that, The number of spindle units is multiple, and the multiple spindle units are detachably and time-divisionally mounted on the positioning ring; The plurality of spindle units are distinguished by size and at least form a first spindle unit and a second spindle unit. The first spindle unit includes a first spindle, and the second spindle unit includes a second spindle. The outer diameter of the first spindle is larger than the outer diameter of the second spindle, so that the rated load force of the first spindle unit is greater than the rated load force of the second spindle unit.

3. The stranding machine spindle structure as described in claim 2, characterized in that, The first spindle unit includes: The first positioning sleeve is detachably mounted on the positioning ring; The first bearing assembly is disposed inside the first positioning sleeve, and the first main shaft is disposed on the first bearing assembly; The second spindle unit includes: The second positioning sleeve is detachably mounted on the positioning ring; The second bearing assembly is disposed inside the second positioning sleeve, and the second main shaft is disposed on the second bearing assembly; The outer diameters of the first positioning sleeve and the second positioning sleeve are the same, so that both the first positioning sleeve and the second positioning sleeve can cooperate with the positioning ring.

4. The stranding machine spindle structure as described in claim 3, characterized in that, The inner diameter of the first bearing assembly is larger than the inner diameter of the second bearing assembly, the outer diameter of the first bearing assembly is larger than the outer diameter of the second bearing assembly, and the inner diameter of the first positioning sleeve is larger than the inner diameter of the second positioning sleeve, so that the first spindle and the second spindle are positioned respectively.

5. The stranding machine spindle structure as described in claim 1, characterized in that, The spindle has a connection portion for connecting to external devices on the front side of the positioning shoulder, and the surface of the connection portion is recessed toward the axis of the spindle to form a drive keyway.

6. The stranding machine spindle structure as described in claim 5, characterized in that, The length of the connecting part is less than or equal to 35% of the total length of the spindle.

7. The stranding machine spindle structure as described in claim 1, characterized in that, The spindle unit also includes an oil seal screw, which is sealed on the side wall of the positioning sleeve to block the lubricating oil inside the positioning sleeve.

8. The stranding machine spindle structure as described in claim 1, characterized in that, The outer circumferential surface of the positioning sleeve and the inner circumferential surface of the positioning ring are in a basic hole transition fit.

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