Drafting transmission device suitable for roving frame with ultra-large number of spindles

Abstract

The utility model discloses a drafting transmission device suitable for a roving frame with an ultra-large number of spindles. The drafting transmission device comprises a plurality of roller stools which are sequentially arranged from the headstock side to the tailstock side in the roller moving direction. Four rows of rollers are arranged on the roller stool side by side; the four rows of rollers are respectively a first row of rollers, a second row of rollers, a third row of rollers and a fourth row of rollers; the first row of rollers and the second row of rollers are respectively composed of a plurality of connected small-section rollers which are sequentially connected from the headstock to the tailstock, the first row of rollers and the second row of rollers are driven on the headstock side, the third row of rollers and the fourth row of rollers are respectively divided into headstock side roller sections and tailstock side roller sections, and each section is also composed of a plurality of connected small-section rollers. A shaft hole sliding connection structure is adopted at the head-tail connection point, drafting transmission structures used for driving a third row of rollers and a fourth row of rollers are arranged on the headstock side and the tailstock side respectively, and two servo speed reducers in the two drafting transmission structures operate synchronously. According to the drafting transmission device, a set of drafting transmission structure is arranged on each of the two sides of the head and the tail, and the drafting transmission structures on the two sides operate synchronously.

Description

Technical Field

[0001] This utility model relates to a roving frame used in a pre-spinning process, and more particularly to a drafting drive system in a roving frame. Background Technology

[0002] The drafting drive system of a roving frame is a power drive device that drives the rotation of each row of rollers in the drafting system of the roving frame, thereby drawing and thinning the fed sliver into roving. Currently, there are mechanical drafting structures and electronic drafting structures for the drive devices of roving frame drafting systems, both of which are installed at one end of the drafting system.

[0003] With the upgrading of automation in the textile industry and the increasing production capacity, the market demand for ultra-large spindle roving frames has increased. As a result, the number of spindles on a single roving frame is increasing. The increase in the number of spindles in the roving frame leads to an increase in the drafting force in the drafting zone. The driving force of the drafting transmission device, which was originally driven by one side, becomes insufficient, resulting in more damage to the drafting transmission components and causing mechanical waves or roller torsional vibration waves in the yarn. Utility Model Content

[0004] In view of the above-mentioned prior art, this utility model provides a drafting drive device for a roving frame with a large number of spindles. The device is a double-sided drafting drive system, that is, a drafting drive device is used on each side of the drafting system, and the two drafting drive devices operate synchronously.

[0005] To solve the above-mentioned technical problems, this utility model proposes a drafting transmission device suitable for ultra-large spindle roving frames, including multiple roller stools arranged sequentially along the roller direction from the front side to the rear side of the frame; four rows of rollers are arranged side by side on the roller stools; the four rows of rollers are respectively the first row of rollers, the second row of rollers, the third row of rollers and the fourth row of rollers;

[0006] The front side of the machine is provided with a first drafting transmission structure for driving the first and second rows of rollers; the first and second rows of rollers are each composed of several small sections of rollers connected sequentially from the front to the rear of the machine; the first drafting transmission structure includes a variable frequency motor installed on the front side of the machine, and the output shaft of the variable frequency motor drives the first and second rows of rollers to rotate simultaneously through a first toothed belt transmission structure and a first main gear-bridge gear-driven gear transmission structure;

[0007] The third roller section includes a front roller section and a rear roller section; the fourth roller section includes a front roller section and a rear roller section; each of the third, fourth, and fifth roller sections is composed of multiple sequentially connected section rollers; the head-to-tail connection points of the front and rear roller sections of the third and fourth roller sections, as well as the head-to-tail connection points of the fourth and fifth roller sections, are located in the middle of the car, and the head-to-tail connection points adopt a shaft hole sliding connection structure;

[0008] The front side of the train is provided with a second traction transmission structure for driving the front roller sections of the fourth and third trains. The second traction transmission structure includes a first servo reducer installed on the front side. The output shaft of the first servo reducer drives the front roller sections of the fourth and third trains to rotate simultaneously through a second toothed belt transmission structure and a second main gear-bridge gear-driven gear transmission structure. The rear side of the train is provided with a third traction transmission structure for driving the rear roller sections of the fourth and third trains. The third traction transmission structure includes a second servo reducer installed on the rear side. The output shaft of the second servo reducer drives the rear roller sections of the fourth and third trains to rotate simultaneously through a third toothed belt transmission structure and a third main gear-bridge gear-driven gear transmission structure. The first servo reducer and the second servo reducer operate synchronously.

[0009] Furthermore, in the drafting drive device for ultra-large spindle roving frames described in this utility model, wherein:

[0010] The driven shaft of the first toothed belt drive structure is connected to the front section roller of the first row of rollers. The first main gear-bridge gear-driven gear drive structure includes a first gear disposed on the driven shaft of the first toothed belt drive structure and a second gear disposed on the shaft end of the front section roller of the second row of rollers. A first bridge gear is provided between the first gear and the second gear.

[0011] The driven shaft of the second toothed belt drive structure is connected to the first section roller of the fourth train head side roller section. The second main gear-bridge gear-driven gear transmission structure includes a third gear disposed on the driven shaft of the second toothed belt drive structure and a fourth gear disposed at the end of the first section roller shaft of the third train head side roller section. A second bridge gear is provided between the third gear and the fourth gear.

[0012] The driven shaft of the third toothed belt drive structure is connected to the tail section roller of the tail side roller section of the fourth train. The third main gear-bridge gear-driven gear transmission structure includes a fifth gear disposed on the driven shaft of the third toothed belt drive structure and a sixth gear disposed at the end of the tail section roller shaft of the tail side roller section of the third train. A third bridge gear is provided between the fifth gear and the sixth gear.

[0013] The shaft hole sliding connection structure is as follows: the end of the tail section roller located on one side of the head-tail connection point is provided with a roller bearing and a shaft head in sequence, and the end of the head section roller located on the other side of the head-tail connection point is provided with a central hole, in which a bushing is embedded. The shaft head of the tail section roller and the bushing in the central hole of the head section roller are in clearance fit. When the third and fourth rollers rotate, if there is an angular difference between the head side roller section and the tail side roller section, relative sliding friction occurs between the shaft head and the bushing.

[0014] The bushing is made of a high-strength, wear-resistant material.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) It can solve the problem of damage to the drafting transmission components caused by excessive drafting force when spinning chemical fiber products on large-spindle roving frames, such as gear wear, drive shaft breakage, and bearing damage.

[0017] (2) It can solve the yarn quality problems caused by mechanical waves in the drafting zone or roller torsion vibration when spinning chemical fiber on large-spindle roving machines, and improve yarn quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the drafting transmission device of this utility model applicable to ultra-large spindle roving frames;

[0019] Figure 2 yes Figure 1 A schematic diagram of the sliding connection structure of the shaft hole at the head and tail connection point C in the middle part of the vehicle shown in the figure;

[0020] Figure 3 yes Figure 1 A schematic diagram of the front-side traction drive structure shown in the figure;

[0021] Figure 4 yes Figure 1 A schematic diagram of the rear-side traction drive structure shown in the image;

[0022] Figure 5 yes Figure 3 A schematic diagram of the front-side traction drive structure from another perspective.

[0023] Figure 6 yes Figure 4 A schematic diagram of the rear-side traction drive structure shown from another perspective;

[0024] Figure 7 yes Figure 3 The diagram shows another perspective of the traction drive structure on the front side of the vehicle.

[0025] In the picture:

[0026] A - Front side of the vehicle B - Rear side of the vehicle C - Connection point between front and rear ends

[0027] I - First Roller II - Second Roller III - 1 - Third Train Head Side Roller Section

[0028] III-2 - Third train rear side roller section; IV-1 - Fourth train front side roller; IV-2 - Fourth train rear side roller

[0029] 1-Measure Rolla 2-Final Measure Rolla 3-First Measure Rolla

[0030] 4-Bushing 5-Variable Frequency Motor 6-First Gear

[0031] 7-First bridge gear; 8-Second gear; 9-First servo reducer

[0032] 10-Second toothed belt drive structure; 11-Third gear; 12-Second bridge gear

[0033] 13-Fourth gear; 14-Second servo reducer; 15-Third toothed belt drive structure

[0034] 16-Fifth gear 17-Third bridge gear 18-Sixth gear

[0035] 19-Control System 20-Roller Stool 21-Roller Bearing

[0036] 22-Shaft head 23-First toothed belt drive structure Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention.

[0038] like Figure 1 As shown, the present invention proposes a drafting transmission device suitable for ultra-large spindle roving frames, comprising multiple roller benches 20 arranged sequentially along the roller direction from the front side to the rear side of the frame; four rows of rollers are arranged side by side on the roller benches 20; the four rows of rollers are respectively the first row of rollers I, the second row of rollers II, the third row of rollers and the fourth row of rollers.

[0039] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the first roller I and the second roller II are each composed of several small roller sections connected sequentially from the front to the rear of the machine, and are connected by threads to form a single long roller. The first roller I and the second roller II are driven on the front side A, that is, a first drafting transmission structure for driving the first roller I and the second roller II is provided on the front side A. The first drafting transmission structure includes a variable frequency motor 5 installed on the front side. The output shaft of the variable frequency motor 5 is provided with a first toothed belt drive structure 23. The driven shaft of the first toothed belt drive structure 23 is connected to the small roller section on the front side of the first roller I. A first gear 6 is provided on the driven shaft of the first toothed belt drive structure 23. A second gear 8 is provided at the shaft end of the small roller section on the front side of the second roller II. A first bridge gear 7 is provided between the first gear 6 and the second gear 8. The variable frequency motor 5 drives the first roller I to rotate through the first toothed belt drive structure 23, and at the same time, drives the second roller II to rotate through the first gear 6, the first bridge gear 7 and the second gear 8.

[0040] like Figures 1 to 7 As shown, the third roller section includes the head side roller section III-1 and the tail side roller section III-2 of the third train; the fourth roller section includes the head side roller section IV-1 and the tail side roller section IV-2 of the fourth train; each of the head side roller section III-1, the tail side roller section III-2, the head side roller section IV-1, and the tail side roller section IV-2 of the third train is composed of multiple sequentially connected small roller sections 1, and each section is composed of several small roller sections connected by threads to form a long roller. The head-to-tail connection points of the head side roller section III-1 and the tail side roller section III-2 of the third roller section, as well as the head-to-tail connection points of the head side roller section IV-1 and the tail side roller section IV-2 of the fourth train, are all located in the middle of the car. The head-to-tail connection points adopt a shaft hole sliding connection structure, such as... Figure 2 As shown, the shaft hole sliding connection structure is as follows: the end of the tail section roller 2 located on one side of the head-tail connection point is provided with a roller bearing 21 and a shaft head 22 in sequence outwards; the end of the head section roller 3 located on the other side of the head-tail connection point is provided with a center hole, and a bushing 4 is embedded in the center hole. The bushing 4 and the center hole are in a transition fit, and the shaft head 22 of the tail section roller 2 and the bushing 4 in the center hole of the head section roller 3 are in a clearance fit. When the third and fourth rollers rotate, if there is an angular difference between the head side roller section and the tail side roller section, relative sliding friction occurs between the shaft head 22 and the bushing 4. The bushing 4 is made of a high-strength wear-resistant material, and will not wear when the shaft head 22 and the bushing 4 slide.

[0041] The third and fourth rollers are driven at the front side A and rear side B, respectively. A second traction transmission structure is provided at the front side A to drive the fourth train's front roller section IV-1 and the third train's front roller section III-1. A third traction transmission structure is provided at the rear side B to drive the fourth train's rear roller section IV-2 and the third train's rear roller section III-2. The specific structures are as follows:

[0042] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the second traction transmission structure includes a first servo reducer 9 mounted on the front side of the train. The output shaft of the first servo reducer 9 is provided with a second toothed belt transmission structure 10. The driven shaft of the second toothed belt transmission structure 10 is connected to the first section roller of the fourth train front side roller section IV-1. A third gear 11 is provided on the driven shaft of the second toothed belt transmission structure 10. A fourth gear 13 is provided at the shaft end of the first section roller of the third train front side roller section III-1. A second bridge gear 12 is provided between the third gear 11 and the fourth gear 13. The first servo reducer 9 drives the fourth train front side roller section IV-1 to rotate through the second toothed belt transmission structure 10. At the same time, it drives the third train front side roller section III-1 to rotate through the third gear 11, the second bridge gear 12 and the fourth gear 13.

[0043] like Figure 1 , Figure 4 and Figure 6 As shown, the third traction transmission structure includes a second servo reducer 14 installed on the rear side of the train. The output shaft of the second servo reducer 14 is provided with a third toothed belt transmission structure 15. The driven shaft of the third toothed belt transmission structure 15 is connected to the tail section roller of the fourth train's rear roller section IV-2. A fifth gear 16 is provided on the driven shaft of the third toothed belt transmission structure 15. A sixth gear 18 is provided at the shaft end of the tail section roller of the third train's rear roller section III-2. A third bridge gear 17 is provided between the fifth gear 16 and the sixth gear 18. The second servo reducer 14 drives the fourth train's rear roller section IV-2 to rotate through the third toothed belt transmission structure 15. At the same time, it drives the third train's rear roller section III-2 to rotate through the fifth gear 16, the third bridge gear 17, and the sixth gear 18.

[0044] The first servo reducer 9 and the second servo reducer 14 operate synchronously. As for how to achieve the synchronous operation of the first servo reducer 9 and the second servo reducer 14, this is a conventional technique for those skilled in the art. In this embodiment, the first servo reducer 9 on the front side A and the second servo reducer 14 on the rear side B are controlled by a control system 19 to operate synchronously. The control system 19 can be placed on the front side, such as... Figure 1 As shown.

[0045] Because the third and fourth rollers each have drive mechanisms on the front and rear sides of the roving frame, and are fitted with clearance in the middle, allowing each side to rotate independently, each roller only bears the drafting force of half the number of spindles on a single roving frame. This reduction in drafting force not only eliminates roller torsional vibration waves, but also reduces the stress on the machine components due to the single-sided drafting drive, thereby minimizing damage to machine parts and the resulting mechanical waves.

[0046] Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many improvements and changes under the guidance of the present invention without departing from the spirit of the present invention, and these improvements and changes are all within the protection scope of the present invention.

Claims

1. A drafting drive device suitable for ultra-large spindle roving frames, characterized in that, It includes multiple roller stools (20) arranged sequentially along the roller direction from the front side to the rear side of the vehicle; four rows of rollers are arranged side by side on the roller stools (20); the four rows of rollers are respectively the first row of rollers (Ⅰ), the second row of rollers (Ⅱ), the third row of rollers and the fourth row of rollers; The front side of the vehicle is provided with a first drafting transmission structure for driving the first row of rollers (I) and the second row of rollers (II); the first row of rollers (I) and the second row of rollers (II) are each composed of several small roller sections connected sequentially from the front to the rear of the vehicle; the first drafting transmission structure includes a variable frequency motor (5) installed on the front side of the vehicle, and the output shaft of the variable frequency motor (5) drives the first row of rollers (I) and the second row of rollers (II) to rotate simultaneously through a first toothed belt transmission structure (23) and a first main gear-bridge gear-driven gear transmission structure; The third roller section includes the head side roller section (Ⅲ-1) and the tail side roller section (Ⅲ-2) of the third train; the fourth roller section includes the head side roller section (Ⅳ-1) and the tail side roller section (Ⅳ-2) of the fourth train; the head side roller section (Ⅲ-1), the tail side roller section (Ⅲ-2), the head side roller section (Ⅳ-1) and the tail side roller section (Ⅳ-2) of the third train are all composed of multiple sequentially connected small roller sections (1); the head-to-tail connection points of the head side roller section (Ⅲ-1) and the tail side roller section (Ⅲ-2) of the third roller section and the head-to-tail connection points of the head side roller section (Ⅳ-1) and the tail side roller section (Ⅳ-2) of the fourth train are all located in the middle of the car, and the head-to-tail connection points adopt a shaft hole sliding connection structure; The front side of the train is provided with a second traction transmission structure for driving the fourth train front side roller section (Ⅳ-1) and the third train front side roller section (Ⅲ-1); the second traction transmission structure includes a first servo reducer (9) installed on the front side, and the output shaft of the first servo reducer (9) drives the fourth train front side roller section (Ⅳ-1) and the third train front side roller section (Ⅲ-1) to rotate in sequence through a second toothed belt transmission structure (10) and a second main gear-bridge gear-driven gear transmission structure; The rear side of the train is provided with a third traction transmission structure for driving the rear roller section (Ⅳ-2) of the fourth train and the rear roller section (Ⅲ-2) of the third train; the third traction transmission structure includes a second servo reducer (14) installed on the rear side of the train, and the output shaft of the second servo reducer (14) drives the rear roller section (Ⅳ-2) of the fourth train and the rear roller section (Ⅲ-2) of the third train to rotate in sequence through a third toothed belt transmission structure (15) and a third main gear-bridge gear-driven gear transmission structure; The first servo reducer (9) and the second servo reducer (14) operate synchronously.

2. The drafting drive device for a large-spindle roving frame according to claim 1, characterized in that, The driven shaft of the first toothed belt drive structure (23) is connected to the front section roller of the first row of rollers (I). The first main gear-bridge gear-driven gear transmission structure includes a first gear (6) disposed on the driven shaft of the first toothed belt drive structure (23) and a second gear (8) disposed at the shaft end of the front section roller of the second row of rollers (II). A first bridge gear (7) is provided between the first gear (6) and the second gear (8).

3. The drafting drive device for a large-spindle roving frame according to claim 1, characterized in that, The driven shaft of the second toothed belt drive structure (10) is connected to the first section roller of the fourth train head side roller section (Ⅳ-1). The second main gear-bridge gear-driven gear transmission structure includes a third gear (11) disposed on the driven shaft of the second toothed belt drive structure (10) and a fourth gear (13) disposed at the end of the first section roller shaft of the third train head side roller section (Ⅲ-1). A second bridge gear (12) is provided between the third gear (11) and the fourth gear (13).

4. The drafting drive device for a large-spindle roving frame according to claim 1, characterized in that, The driven shaft of the third toothed belt drive structure (15) is connected to the tail section roller of the fourth train tail side roller section (Ⅳ-2). The third main gear-bridge gear-driven gear transmission structure includes a fifth gear (16) disposed on the driven shaft of the third toothed belt drive structure (15) and a sixth gear (18) disposed at the end of the tail section roller shaft of the third train tail side roller section (Ⅲ-2). A third bridge gear (17) is provided between the fifth gear (16) and the sixth gear (18).

5. The drafting drive device for a large-spindle roving frame according to claim 1, characterized in that, The shaft hole sliding connection structure is as follows: the end of the tail section roller (2) located on one side of the head and tail connection point is provided with roller bearing (21) and shaft head (22) in sequence, and the end of the head section roller (3) located on the other side of the head and tail connection point is provided with a central hole. A bushing (4) is embedded in the central hole. The shaft head (22) of the tail section roller (2) and the bushing (4) in the central hole of the head section roller (3) are in clearance fit. When the third and fourth rollers rotate, if there is a difference in the rotation angle between the front roller section and the rear roller section, the shaft head (22) and the bushing (4) will generate relative sliding friction.

6. The drafting drive device for a large-spindle roving frame according to claim 5, characterized in that, The bushing (4) is made of a high-strength wear-resistant material.

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