Multi-roller speed acquisition device for textile production lines

Abstract

This utility model discloses a multi-roller speed acquisition device for a textile production line, relating to the field of textile equipment. Its key technical features include: multiple acquisition terminals, each comprising a bracket, an encoder, and a synchronous pulley connected to the encoder's shaft; the bracket is used for mounting on the textile equipment, and the brackets for multiple acquisition terminals can share the same bracket or each use a different bracket; the synchronous pulley contacts the rollers of the textile equipment. This utility model includes multiple acquisition terminals, each corresponding to multiple rollers of a single textile machine or multiple rollers of multiple textile machines. Through the contact transmission between the synchronous pulley and the rollers, combined with the encoder, the speed of each roller is accurately converted into an electrical signal, achieving comprehensive and real-time collection of the speeds of multiple rollers on the production line, providing a complete data foundation for subsequent adjustments.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment, and more specifically, it relates to a multi-roller speed acquisition device for a textile production line. Background Technology

[0002] In the textile production process, from spinning and weaving to dyeing and finishing, each stage relies on the coordinated operation of multiple roller devices. For example, the front and rear rollers of the drawing frame need to be precisely matched in speed to achieve the drafting and doubling of the fiber sliver, and the guide rollers of the dyeing and printing line need to synchronously transport the fabric to ensure the uniformity of the dyeing and printing processes. The synchronization of the rotation speeds of these rollers directly affects the quality of the fabric and the production efficiency.

[0003] If the rotational speeds of multiple rollers deviate, it can lead to uneven tension in the fabric during transport. When the tension is too low, the fabric is prone to loosening and misalignment, causing problems such as uneven winding and pattern misalignment. When the tension is too high, the fabric will be overstretched, causing fiber damage, fabric width shrinkage, and even breakage, severely impacting product yield. Industry statistics show that fabric defects caused by asynchronous roller speeds account for more than 30% of all defects in textile production, resulting in significant economic losses for enterprises.

[0004] Traditional textile roller speed control methods mostly employ mechanical linkage or a single motor driving multiple rollers. Mechanical linkage achieves speed correlation through transmission components such as gears and chains, but after long-term operation, transmission errors are prone to occur due to mechanical wear, and it is difficult to adapt to the adjustment of process parameters for different fabric types. While the single motor drive mode can ensure consistent initial speed to a certain extent, it cannot cope with speed fluctuations caused by changes in roller load (such as uneven fabric thickness or changes in roll diameter), and lacks dynamic adjustment capability.

[0005] Therefore, developing a multi-roller speed acquisition device to collect the speed of rollers on a single or multiple textile equipment on a textile production line, and dynamically adjusting the speed of each roller through motor speed control, in order to improve the speed synchronization accuracy of the textile production line and reduce fabric defects caused by uneven tension, has become a key requirement for the current upgrading of textile equipment. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-roller speed acquisition device for textile production lines.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multi-roller speed acquisition device for a textile production line, comprising multiple acquisition ends, each acquisition end including a bracket, an encoder, and a synchronous wheel connected to the shaft of the encoder; the bracket is used to install on the textile equipment, and the brackets of the multiple acquisition ends may share the same bracket or each use a different bracket; the synchronous wheel contacts the rollers of the textile equipment, rotates synchronously with the rollers, and drives the shaft of the encoder to rotate, so that the encoder outputs an electrical signal reflecting the speed of the rollers and transmits it to the PLC, so as to control the speed of each roller through the PLC; the relative position between the bracket and the encoder is adjustable.

[0008] The present invention is further configured such that: the bracket includes a support plate and a lifting bracket; the support plate is connected to the textile equipment by bolts; and the support plate has multiple adjustment holes distributed along the length direction; the lifting bracket is fixedly connected to the adjustment holes of the support plate by bolts; and the lateral position of the lifting bracket on the support plate can be adjusted by selecting different adjustment holes; and the encoder adjusts its position with the lifting bracket.

[0009] The present invention is further configured such that: the lifting bracket is provided with a U-shaped bayonet, a connecting shaft is inserted through the bayonet, the lifting bracket clamps the bayonet to fix the connecting shaft by bolts, and the connecting shaft can move axially to clamp the bayonet at different positions, thereby realizing the axial position adjustment of the connecting shaft, and the encoder adjusts its position with the connecting shaft.

[0010] The present invention is further configured such that: a rotating frame is rotatably connected to the end of the connecting shaft, the encoder is fixed to the movable end of the rotating frame, and a tension spring is connected between the movable end of the rotating frame and the end of the connecting shaft. The tension spring is used to provide elastic preload so that the synchronous pulley always maintains reliable contact with the roller.

[0011] The present invention is further configured such that: the lifting seat includes a base fixedly connected to the bearing plate and a slider slidably disposed on the base; the bayonet is disposed at the top of the slider; the top of the base has a vertical groove for sliding the slider; the side of the base has a strip-shaped through groove extending vertically and communicating with the groove; an adjusting bolt is fixedly connected to the side of the slider; the screw of the adjusting bolt passes through the strip-shaped through groove and a washer is disposed between the screw head and the base; by tightening the adjusting bolt, the screw head abuts against the washer and presses the washer against the side of the base.

[0012] The present invention is further configured as follows: a fixing ring is sleeved on the connecting shaft, and a first connecting bolt is vertically bolted to the side of the fixing ring; a second connecting bolt is vertically bolted to the side of the movable end of the rotating frame away from the encoder; the two ends of the tension spring are respectively sleeved on the screws of the first connecting bolt and the second connecting bolt, and the two ends of the tension spring abut against the side of the fixing ring and the side of the movable end of the rotating frame, so as to fix the two ends of the tension spring.

[0013] The present invention is further configured such that: the synchronous pulley includes a metal hub and an outer circumferentially vulcanized rubber layer; the metal hub is made of aluminum alloy or carbon steel and has an annular tooth groove on its outer circumferential surface; the rubber layer is made of chloroprene rubber or hydrogenated nitrile rubber and has an annular tooth that mates with the tooth groove on its inner circumferential surface; and the metal hub and the rubber layer are formed into an integral structure through a hot vulcanization process.

[0014] In summary, this utility model has the following beneficial effects: it includes multiple acquisition terminals, which can respectively correspond to multiple rollers of a single textile equipment or multiple rollers of multiple textile equipment. Through synchronous pulleys and roller contact transmission, combined with encoders, the rotation speed of each roller is accurately converted into electrical signals, realizing comprehensive and real-time collection of the rotation speed of multiple rollers on the production line, providing a complete data foundation for subsequent adjustment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of one of the acquisition terminals in this utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of one of the acquisition terminals in this utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the base structure in this utility model;

[0018] Figure 4 This is a schematic diagram of the encoder and metal hub in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the rubber layer in this utility model.

[0020] In the diagram: 1. Encoder; 2. Synchronous pulley; 3. Bearing plate; 4. Lifting bracket; 5. Adjustment hole; 6. Bayonet; 7. Connecting shaft; 8. Rotating frame; 9. Tension spring; 10. Base; 11. Slider; 12. Slide groove; 13. Strip groove; 14. Adjusting bolt; 15. Fixing ring; 16. First connecting bolt; 17. Second connecting bolt; 18. Metal hub; 19. Rubber layer; 20. Annular tooth groove; 21. Annular tooth. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0022] A multi-roller speed acquisition device for a textile production line, such as Figure 1 As shown, it includes a total of 4 acquisition terminals (only one acquisition terminal is marked in the figure, and the structure of the acquisition terminals is the same, so it is not marked in the figure). Each acquisition terminal is independently equipped with a bracket (or the same bracket can be shared according to the equipment layout). Each acquisition terminal consists of a bracket, encoder 1, synchronous wheel 2 and connecting components. Among them, encoder 1 is a 1024-line incremental photoelectric encoder 1, and its output signal is transmitted to the production line PLC control cabinet through a shielded wire. The PLC adjusts the drive motor frequency of the corresponding guide roller according to the speed difference to achieve multi-roller synchronous control.

[0023] like Figure 1 and Figure 2 As shown, the support includes a bearing plate 3, a lifting bracket 4, a connecting shaft 7, and a rotating frame 8. The bearing plate 3 is made of 4mm thick steel plate and is bolted to the frame of the printing and dyeing equipment with M8 bolts. Several adjustment holes 5 are opened along the length direction on its surface, with the hole spacing set at a constant value, to realize the lateral position adjustment of the lifting bracket 4.

[0024] like Figure 2 and Figure 3 As shown, the lifting bracket 4 consists of a base 10 and a slider 11. The base 10 is fixed to the adjustment hole 5 of the bearing plate 3 by M6 bolts. A slotted groove 12 is provided on the top, and a strip-shaped through groove 13 extending vertically and communicating with the slot 12 is provided on the side of the base 10. The bottom of the slider 11 slides within the slot 12, and a U-shaped bayonet 6 is machined on the top. An adjusting bolt 14 is threaded onto the side of the slider 11. The screw of the adjusting bolt 14 passes through the strip-shaped through groove 13 on the side of the base 10, and a washer is fitted between the screw of the adjusting bolt 14 and the side of the base 10. When the adjusting bolt 14 is tightened, the screw head presses the slider 11 against the base 10 through the washer, locking the vertical position of the slider 11. After loosening, the position of the slider 11 can be adjusted, thereby driving the encoder 1 and the synchronous wheel 2 to adjust their positions. After adjustment, tighten the bolt.

[0025] like Figure 1 and Figure 2As shown, the connecting shaft 7 is made of stainless steel and passes through the U-shaped bayonet 6 of the slider 11. The bayonet 6 is clamped on both sides by bolts, which can fix the connecting shaft 7 by squeezing the connecting shaft 7 on both sides of the bayonet 6. After the bolts are loosened, the connecting shaft 7 can slide axially. The end of the connecting shaft 7 is rotatably connected to the rotating frame 8 (the rotating frame 8 is made of die-cast aluminum alloy). The movable end of the rotating frame 8 is bolted to the encoder 1. The input shaft of the encoder 1 is connected to the synchronous pulley 2 by a key.

[0026] like Figure 1 As shown, a stainless steel retaining ring 15 is fitted on the connecting shaft 7. The retaining ring 15 is interference-fitted with the connecting shaft 7. The first connecting bolt 16 is vertically bolted to the side of the retaining ring 15. The second connecting bolt 17 is bolted to the side of the movable end of the rotating frame 8 away from the encoder 1. The two ends of the tension spring 9 are respectively fitted on the screws of the first connecting bolt 16 and the second connecting bolt 17. The two ends of the tension spring 9 abut against the side of the retaining ring 15 and the side of the movable end of the rotating frame 8, respectively. After assembly, the pre-compression of the tension spring 9 is 15mm, providing a pre-tightening force of 8-10N.

[0027] like Figure 4 and Figure 5 As shown, the synchronous pulley 2 adopts a metal-rubber composite structure: the metal hub 18 is made of aluminum alloy, and several ring-shaped tooth grooves 20 are machined on the outer circumference surface; the outer rubber layer 19 is made of hydrogenated nitrile rubber with a Shore hardness of 70A, which is combined with the metal hub 18 through a hot vulcanization process, and the ring teeth 21 on the inner circumference surface of the rubber layer 19 mesh with the hub tooth grooves.

[0028] Working process: The bearing plate 3 is installed on the textile equipment according to the roller position that needs to be dynamically adjusted (it can be installed on the same textile equipment to control the speed of multiple rollers, or it can be installed on different textile equipment on a textile production line to make the roller speed synchronization of the entire textile production line higher). The horizontal position of the lifting bracket 4 is adjusted by adjusting the hole 5 of the bearing plate 3, the vertical height is adjusted by sliding the slider 11 and tightening the adjusting bolt 14, and the bolt of the clamp 6 is loosened to adjust the axial position of the connecting shaft 7 so that the synchronous wheel 2 is in contact with the roller surface; the tension spring 9 provides continuous preload to ensure that the synchronous wheel 2 and the roller have no gap contact.

[0029] Speed ​​acquisition: When the roller rotates, the synchronous wheel 2 rotates synchronously with the roller through the friction of the rubber layer 19, which drives the encoder 1 shaft to rotate. The encoder 1 outputs a pulse signal (frequency 1-10kHz), and the real-time speed is obtained by the PLC calculation.

[0030] Feedback control: The PLC compares the speed signals of each roller with the set values ​​and adjusts the speed of the corresponding motor through the PID algorithm to keep the synchronization error of the multi-roller speed within ±0.5r / min.

[0031] This utility model includes multiple acquisition terminals, each corresponding to multiple rollers of a single textile machine or multiple textile machines. Through synchronous pulleys 2 contacting and driving the rollers, and combined with encoders 1, the rotational speed of each roller is accurately converted into an electrical signal, achieving comprehensive and real-time collection of the rotational speeds of multiple rollers on the production line. This provides a complete data foundation for subsequent adjustments. The collected rotational speed electrical signals are transmitted to a PLC, which can accurately control the corresponding motor speed based on the differences in the rotational speeds of each roller. Meanwhile, the adjustment structure of this utility model ensures that the synchronous wheel 2 is always in reliable contact with the roller, ensuring accurate speed signals and making dynamic adjustment more precise, thus significantly improving the speed synchronization accuracy of multiple rollers in the textile production line. Due to the improved speed synchronization accuracy, the tension of the fabric is more uniform during transmission, avoiding problems such as loosening and deviation, uneven winding, and pattern misalignment caused by insufficient tension, as well as fiber damage, width shrinkage, and breakage caused by excessive tension. This significantly reduces fabric defects, improves product quality, and meets the requirements of modern textile production for high precision and high stability. It provides key support for the upgrading of textile equipment to automation and intelligence, and meets the urgent needs of the current textile industry to improve production efficiency and product quality.

[0032] This invention features multi-dimensional adjustment capabilities. Through multi-level adjustment of the bearing plate 3 holes, the lifting seat 4 slider 11, and the axial position of the connecting shaft 7, it can be adapted to various textile rollers, exhibiting extremely high installation compatibility. The double protection of the tension spring 9 pre-tension and the elastic contact of the rubber layer 19 ensures that the synchronous wheel 2 can maintain reliable transmission even with a radial runout of ±2mm on the roller, reducing the slippage rate. The rotation settings of the rotating frame 8 and the connecting shaft 7 are also adapted to the elastic contact of the tension spring 9 and the rubber layer 19. The modular design of multiple acquisition ends allows this invention to be adapted to multiple rollers on an entire textile production line, improving the processing accuracy of the fabric.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A textile production line multi-roller rotational speed acquisition device, characterized by: It includes multiple acquisition terminals, each of which includes a bracket, an encoder, and a synchronous pulley connected to the encoder shaft. The bracket is used to install on textile equipment, and the brackets for multiple acquisition terminals can share the same bracket or each use a different bracket. The synchronous pulley contacts the rollers of the textile equipment, rotates synchronously with the rollers, and drives the encoder shaft to rotate, so that the encoder outputs an electrical signal reflecting the roller speed and transmits it to the PLC, so that the PLC can control the speed of each roller. The relative position between the bracket and the encoder is adjustable.

2. The textile production line multi-roller rotational speed acquisition device according to claim 1, characterized in that: The support includes a support plate and a lifting bracket. The support plate is bolted to the textile equipment and has multiple adjustment holes distributed along its length. The lifting bracket is fixedly connected to the adjustment holes of the support plate by bolts. The lateral position of the lifting bracket on the support plate can be adjusted by selecting different adjustment holes. The encoder adjusts its position with the lifting bracket.

3. The multi-roller speed acquisition device for textile production lines according to claim 2, characterized in that: The lifting bracket is provided with a U-shaped bayonet, and a connecting shaft is inserted through the bayonet. The lifting bracket clamps the bayonet to fix the connecting shaft, and the connecting shaft can move axially to clamp the bayonet in different positions, thereby realizing the axial position adjustment of the connecting shaft. The encoder adjusts its position with the connecting shaft.

4. The multi-roller speed acquisition device for textile production lines according to claim 3, characterized in that: The end of the connecting shaft is rotatably connected to a rotating frame, the encoder is fixed to the movable end of the rotating frame, and a tension spring is connected between the movable end of the rotating frame and the end of the connecting shaft. The tension spring is used to provide elastic preload so that the synchronous pulley always maintains reliable contact with the roller.

5. The multi-roller speed acquisition device for textile production lines according to claim 3, characterized in that: The lifting bracket includes a base fixedly connected to a support plate and a slider slidably disposed on the base. The bayonet is disposed at the top of the slider. The top of the base has a vertical groove for sliding the slider. The side of the base has a strip-shaped through groove extending vertically and communicating with the groove. An adjusting bolt is fixedly connected to the side of the slider. The screw of the adjusting bolt passes through the strip-shaped through groove and a washer is disposed between its screw head and the base. By tightening the adjusting bolt, its screw head abuts against the washer and presses the washer against the side of the base.

6. The multi-roller speed acquisition device for textile production lines according to claim 4, characterized in that: A fixing ring is fitted on the connecting shaft, and a first connecting bolt is vertically bolted to the side of the fixing ring; a second connecting bolt is vertically bolted to the side of the movable end of the rotating frame away from the encoder; the two ends of the tension spring are respectively fitted onto the screws of the first connecting bolt and the second connecting bolt, and the two ends of the tension spring abut against the side of the fixing ring and the side of the movable end of the rotating frame, so as to fix the two ends of the tension spring.

7. The multi-roller speed acquisition device for textile production lines according to claim 1, characterized in that: The synchronous pulley includes a metal hub and a rubber layer formed by vulcanization on the outer periphery. The metal hub is made of aluminum alloy or carbon steel and has an annular toothed groove on its outer circumferential surface. The rubber layer is made of chloroprene rubber or hydrogenated nitrile rubber and has annular teeth on its inner circumferential surface that mate with the toothed groove. The metal hub and the rubber layer are formed into an integral structure through a hot vulcanization process.

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