Synchronous belt transmission and tensioning device with parallel rollers rotating in different directions for carding machine

Abstract

The utility model discloses a synchronous belt transmission and tensioning device with parallel rollers rotating in different directions for a carding machine, and belongs to the technical field of transmission and tensioning of carding machines. An inner tooth surface of the double-tooth synchronous belt is meshed with a driving synchronous belt wheel and two tensioning wheels, an outer tooth surface of the double-tooth synchronous belt is combined with a driven synchronous belt wheel in a wrap angle and meshing mode, the driving synchronous belt wheel is installed on a shaft head of a driving transfer roller through an expansion sleeve I, and the driven synchronous belt wheel is installed on a shaft head of a driven licker-in through an expansion sleeve II. The two tensioning wheels are arranged at the upper end and the lower end of the right half side of the driven synchronous belt wheel correspondingly, and the rotating angle of the bearing seat support can be adjusted through the adjusting screw assembly. According to the utility model, the opposite-direction rotation of the parallel rollers in the carding machine can be realized, and the accurate transmission and stable transmission of power and transmission can be realized; meanwhile, only one set of power source needs to be arranged, the accuracy of the transmission speed ratio is improved, the structure is compact, space is saved, installation and adjustment are convenient, operation is easy and convenient, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission and tensioning of a carding machine in a spunlace nonwoven fabric production line, and more specifically is a synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for the carding machine. Background Art

[0002] The carding machine is one of the key units in the spunlace nonwoven production line. The carding machine is mainly used to card the loosened and mixed mat cotton into a three-dimensional randomly arranged fiber web composed of single fibers. The passive licker-in roller in the feeding part of the carding machine first grabs the mat cotton held by the feeding roller and the feeding plate, and then the active transfer roller grabs and transfers it to the pre-carding part. The transfer effect of the passive licker-in roller and the active transfer roller determines that the rotation directions of the two needle cloth rollers are opposite. At the same time, in order to achieve higher transfer efficiency, the speed ratio between the passive licker-in roller and the active transfer roller is required to be accurate and stable. At present, the transmission of the passive licker-in roller and the active transfer roller mostly adopts the transmission mode of the reducer through the synchronous belt and the synchronous pulley. However, due to the limited space of the feeding part, the installation position of the reducer is often not smooth in the design. In addition, the passive licker-in roller and the active transfer roller are driven by a set of reducers respectively, which will cause energy waste on the one hand, and on the other hand, the accuracy and stability of the transmission speed ratio between the passive licker-in roller and the active transfer roller are not easy to guarantee. Therefore, it is urgent to design a transmission and tensioning device with compact structure, small space occupation, convenient installation and operation, reduced energy consumption, and improved accuracy and stability of the transmission speed ratio between the passive licker-in roller and the active transfer roller. Summary of the invention

[0003] The purpose of the utility model is to provide a synchronous belt transmission and tensioning device for the counter-rotation of parallel rollers for a carding machine in response to the deficiencies of the above-mentioned prior art. The utility model can realize the counter-rotation of parallel rollers in the carding machine, realize the accurate and stable transmission of power and transmission from the active transfer roller to the passive licker-in roller, and ensure a stable transmission speed ratio; at the same time, the power source matched with the utility model only needs one set of reducer. Compared with the traditional transmission device that needs two sets of power sources to drive, the utility model is not only conducive to improving the accuracy of the transmission speed ratio, but also has the advantages of compact structure, space saving, easy installation, convenient adjustment, simple operation, and reduced energy consumption.

[0004] The purpose of this utility model can be achieved by the following measures:

[0005] The utility model discloses a synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine, comprising an active transfer roller and a passive licker-in roller which are arranged in parallel and rotate in opposite directions (the active transfer roller and the passive licker-in roller which rotate in opposite directions can smoothly grab the mat cotton and transfer it to the subsequent pre-carding station of the carding machine), an active synchronous pulley connected to the shaft head of the active transfer roller through an expansion sleeve I (the active synchronous pulley and the active transfer roller are fastened together as one body through the expansion sleeve I to ensure that the two can rotate synchronously), and a passive synchronous pulley connected to the shaft head of the passive licker-in roller through an expansion sleeve II (the passive synchronous pulley and the passive licker-in roller are fastened together as one body through the expansion sleeve II to ensure that the two can rotate synchronously), which are respectively arranged on the upper and lower sides of the right half of the passive synchronous pulley The two tensioning wheels at the two ends of the double-sided toothed synchronous belt (which keeps the double-sided toothed synchronous belt in a tensioned state to maintain accurate and stable transmission of power and motion), the inner tooth surface meshes with the active synchronous pulley and the two tensioning wheels, and the outer tooth surface is combined with the passive synchronous pulley in a wrap angle and meshing manner (the active synchronous pulley, the passive synchronous pulley, and the two tensioning wheels are driven by the double-sided toothed synchronous belt to achieve synchronous rotation, so that the transmission parameters are input from one end of the active transfer roller and transmitted to the passive licker-in roller through the active synchronous pulley, the double-sided toothed synchronous belt, and the passive synchronous pulley, so that the transmission parameters input from one end of the active transfer roller are transmitted to the passive licker-in roller through the active synchronous pulley, the double-sided toothed synchronous belt, and the passive synchronous pulley, thereby realizing the active transfer roller belt The active and passive licker-in rollers rotate in opposite directions at a certain transmission speed ratio, thereby smoothly grabbing the mat cotton and transferring it to the subsequent pre-combing station of the carding machine; at the same time, the power source that can be used with the utility model only needs one set of reducer. Compared with the traditional transmission device that requires two sets of power sources to drive, the utility model is not only conducive to improving the accuracy of the transmission speed ratio, but also has the advantages of compact structure, space saving, easy installation, convenient adjustment, simple operation and reduced energy consumption); bearing components I are installed in the inner cavities of the two tensioning wheels (to ensure that the tensioning wheels can rotate smoothly), and inner and outer nested bearing components II and bearing seats (axle The bearing assembly II ensures that the bearing seat can rotate smoothly; the bearing seat provides the installation foundation and installation space for the bearing assembly II), and the bearing seat bracket is connected to the right side of the bearing seat by means of threaded connection (the bearing seat bracket is the installation foundation of the two tensioning wheels, and in the process of tensioning, the screw assembly pushes and pulls the bearing seat bracket to drive the two tensioning wheels to rotate along the shaft head of the passive licker-in roller as a whole, so as to ensure that the double-sided toothed synchronous belt always wraps the passive licker-in roller with a larger wrap angle during the transmission process, so as to ensure the smooth and accurate transmission), and the outer extension ends of the two bearing assemblies I are connected to the bearing seat bracket by means of threaded connection (to ensure that the bearing seat bracket can drive the two tensioning wheels to rotate along the shaft head of the passive licker-in roller as a whole when rotating);An adjusting screw assembly for adjusting the rotation angle of the bearing seat bracket is installed between the bearing seat bracket and the frame (the adjusting screw assembly can be used to adjust the rotation angle of the bearing seat bracket during the tensioning process - that is, the two tensioning wheels are driven to rotate along the shaft head of the passive licker-in roller as a whole to ensure that the double-sided toothed synchronous belt always wraps the passive licker-in roller with a larger wrap angle during the transmission process. Therefore, the utility model can realize the accurate and stable transmission of power and transmission from the active transfer roller to the passive licker-in roller, ensuring a stable transmission speed ratio). ;

[0006] The bearing seat bracket described in the utility model is composed of an S-shaped bracket plate and a V-shaped bracket plate which are positioned and welded together by mortise and tenon joints (the V-shaped bracket plate is used to connect the bearing seat and the S-shaped bracket plate; the S-shaped bracket plate serves as the installation base for two tension wheels); a mounting hole connected to the bottom plate of the bearing seat is processed on the lower half of the V-shaped bracket plate (the bearing seat bracket and the bearing seat can be quickly connected by screwing in the bolts, which is also convenient for disassembly); support shaft insertion holes (for installing the support shaft) are respectively processed on the two distal ends of the S-shaped bracket plate, a clamping groove for positioning the V-shaped bracket plate is processed on the left outer side of the S-shaped bracket plate, and a pin shaft hole is processed on the left tail plate at the bottom of the S-shaped bracket plate (for inserting the pin shaft to achieve quick connection and quick disassembly of the screw and the S-shaped bracket plate).

[0007] The adjusting screw assembly described in the utility model comprises a screw seat screwed on the outer side of the front end of the frame, a screw penetrating the screw seat, fixing nuts attached to both sides of the screw seat for fastening the screw, a pin connecting the other end of the screw with the S-shaped bracket plate in the bearing seat bracket and a matching retaining ring III, and a top screw for fixing the screw seat (the screw seat is the installation base of the screw and is connected to the frame through the top screw; the fixing nut is used to lock and fix the position of the screw; the pin realizes the rapid connection and rapid disassembly of the screw and the S-shaped bracket plate); a mounting hole matching the screw is processed along the thickness direction of the rear end of the screw seat (for easy installation of the screw); the front end of the screw seat is processed into a cylinder, and a top screw positioning ring groove is processed radially on the cylindrical surface (for positioning the top screw), and a screw seat embedding cylindrical blind hole (for embedding the front end cylindrical section of the screw seat) is processed at the corresponding installation position on the frame; a pin shaft mounting hole matching the pin shaft is processed at the other end of the screw (for passing the pin shaft).

[0008] The bearing assembly I described in the utility model includes a supporting shaft, a sleeve I which is sleeved on the supporting shaft and symmetrically arranged from the inside to the outside, a first rolling bearing and a second rolling bearing, and two retaining rings I; a shoulder I is processed in the center of the inner cavity of the tensioning wheel, and retaining ring clamping grooves I are processed in the inner cavity of the tensioning wheel at both ends of the shoulder; a thread matching the nut is processed at the outer extended end of the supporting shaft; the length of the sleeve I is consistent with the length of the shoulder I, and the outer diameter of the sleeve I matches the inner diameter of the shoulder I; the inner diameters of the first rolling bearing, the second rolling bearing and the sleeve I all match the diameter of the supporting shaft; the outer diameter and width of the retaining ring I match the outer diameter and width of the retaining ring clamping groove I.

[0009] The bearing assembly II described in the utility model comprises a shaft sleeve II which is sleeved on the shaft head of the passive licker-in roller and is located between the passive licker-in roller and the passive synchronous pulley, a third rolling bearing and a fourth rolling bearing which are symmetrically arranged at the front and rear ends of the shaft sleeve II, and a retaining ring II which is respectively retained at the outer ends of the third rolling bearing and the fourth rolling bearing; a shaft shoulder II is processed in the middle of the inner cavity of the bearing seat, and retaining ring clamping grooves II are processed in the inner cavity of the bearing seat at the front and rear ends of the shaft shoulder; the length of the shaft sleeve II is consistent with the length of the shaft shoulder II, and the outer diameter of the shaft sleeve II matches the inner diameter of the shaft shoulder II; the inner diameters of the third rolling bearing, the fourth rolling bearing and the shaft sleeve II all match the shaft head diameter of the passive licker-in roller; the outer diameter and width of the retaining ring II match the outer diameter and width of the retaining ring clamping groove II.

[0010] The working principle of the utility model is as follows:

[0011] The utility model is designed with a double-sided toothed synchronous belt, in which an inner tooth surface is meshed with a driving synchronous pulley and two tensioning wheels, and an outer tooth surface is combined with a passive synchronous pulley in a wrap angle and meshing manner, and the driving synchronous pulley is installed on the shaft head of the active transfer roller through an expansion sleeve I, and the passive synchronous pulley is installed on the shaft head of the passive licker-in roller through an expansion sleeve II, and the two tensioning wheels are respectively arranged at the upper and lower ends of the right half side of the passive synchronous pulley, and the rotation angle of the bearing seat bracket can be adjusted by means of an adjusting screw assembly. In this way, the transmission parameters are input from one end of the active transfer roller, and are transmitted to the passive licker-in roller through the active synchronous pulley, the double-sided toothed synchronous belt, and the passive synchronous pulley, so that the active transfer roller drives the passive licker-in roller to rotate in opposite directions at a certain transmission speed ratio, thereby smoothly grabbing the mat cotton and transferring it to the subsequent pre-combing station of the carding machine; at the same time, since the transmission ratio between the active transfer roller and the passive licker-in roller is determined by the tooth number ratio of the active synchronous pulley and the passive synchronous pulley, and the double-sided toothed synchronous belt can be tensioned by the upper and lower tensioning wheels, the rotation angle of the bearing seat bracket can be adjusted during the tensioning process with the help of the adjusting screw assembly - that is, the two tensioning wheels are driven to rotate as a whole along the shaft head of the passive licker-in roller to ensure that the double-sided toothed synchronous belt always wraps the passive licker-in roller with a larger wrap angle during the transmission process. Therefore, the utility model can realize the accurate and stable transmission of power and transmission from the active transfer roller to the passive licker-in roller, and ensure a stable transmission speed ratio. In addition, since the power source matched with the utility model only needs one set of reducer, compared with the traditional transmission device that needs two sets of power sources to drive, the utility model is not only conducive to improving the accuracy of the transmission speed ratio, but also has the advantages of compact structure, space saving, easy installation, convenient adjustment, simple operation, and reduced energy consumption. In addition, the utility model can quickly and conveniently realize the tensioning of the double-sided toothed synchronous belt by only rotating and tightening the fixing nut on the screw rod, which has the advantages of convenient adjustment, simple operation, and.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model can realize the skewed rotation of parallel rollers in the carding machine, realize the accurate and stable transmission of power and transmission from the active transfer roller to the passive licker-in roller, and ensure a stable transmission speed ratio; at the same time, the power source matched with the utility model only needs one set of reducer. Compared with the traditional transmission device which needs two sets of power sources to drive, the utility model is not only conducive to improving the accuracy of the transmission speed ratio, but also has the advantages of compact structure, space saving, easy installation, convenient adjustment, simple operation and reduced energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 yes Figure 1 E-E section diagram in .

[0016] Figure 3 This is a schematic diagram of the connection between the tensioner and the bearing bracket (also Figure 1 F-F section in the figure).

[0017] Figure 4 This is the structure and installation diagram of the adjusting screw assembly (also Figure 1 G-G section in ).

[0018] Explanation of the numbers in the figure: 1. Active transfer roller, 2. Passive licker-in roller, 3. Active synchronous pulley, 4. Expansion sleeve I, 5. Passive synchronous pulley, 6. Expansion sleeve II, 7. Bearing seat bracket, 7-1. S-shaped bracket plate, 7-2. V-shaped bracket plate, 8. Third rolling bearing, 9. Shaft sleeve II, 10. Fourth rolling bearing, 11. Snap ring II, 12. Double-sided toothed synchronous belt, 13. Tensioner, 13-1. Shoulder I, 13-2. Snap ring slot Ⅰ, 14, supporting shaft, 15, first rolling bearing, 16, bushing Ⅰ, 17, second rolling bearing, 18, retaining ring Ⅰ, 19, nut, 20, frame, 21, top screw, 22, fixing nut, 23, screw seat, 24, screw, 25, pin shaft, 26, retaining ring III, 27, bearing seat, 27-1, shaft shoulder Ⅱ, 27-2, retaining ring snap-in groove Ⅱ, A, bearing assembly Ⅰ, B, bearing assembly Ⅱ, C, adjusting screw assembly. DETAILED DESCRIPTION

[0019] The utility model will be further described below with reference to the accompanying drawings:

[0020] like Figures 1 to 4As shown, a synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine of the utility model comprises an active transfer roller 1 and a passive licker-in roller 2 arranged in parallel and rotating in opposite directions (with the help of the active transfer roller 1 and the passive licker-in roller 2 rotating in opposite directions, the mat cotton can be smoothly grasped and transferred to the subsequent pre-carding station of the carding machine), an active synchronous belt pulley 3 connected to the shaft head of the active transfer roller through an expansion sleeve Ⅰ4 (the active synchronous belt pulley 3 and the active transfer roller 1 are fastened together through the expansion sleeve Ⅰ4 to ensure that the two can rotate synchronously), and a passive synchronous belt connected to the shaft head of the passive licker-in roller through an expansion sleeve Ⅱ6. The passive synchronous pulley 5 and the passive licker-in roller 2 are connected as a whole through the expansion sleeve II 6 to ensure that the two can rotate synchronously. The two tensioning wheels 13 are arranged at the upper and lower ends of the right half of the passive synchronous pulley 5 (to keep the double-sided toothed synchronous belt 12 in a tensioned state to maintain accurate and stable transmission of power and motion). The double-sided toothed synchronous belt 12 (the active synchronous pulley 3, the passive synchronous pulley 5, and the two tensioning wheels 13 are driven by the double-sided toothed synchronous belt 12) is meshed with the active synchronous pulley and the two tensioning wheels on the inner tooth surface and is combined with the passive synchronous pulley in a wrap angle and meshing manner. Synchronous rotation is realized, so that the transmission parameters are input from one end of the active transfer roller 1, and are transmitted to the passive licker-in roller 2 through the active synchronous pulley 3, the double-sided toothed synchronous belt 12, and the passive synchronous pulley 5. In this way, the transmission parameters input from one end of the active transfer roller 1 are transmitted to the passive licker-in roller 2 through the active synchronous pulley 3, the double-sided toothed synchronous belt 12, and the passive synchronous pulley 5, so that the active transfer roller 1 drives the passive licker-in roller 2 to rotate in different directions at a certain transmission speed ratio, and then smoothly grabs the mat cotton and transfers it to the subsequent pre-combing station of the carding machine; at the same time, the power source matched with the utility model only needs a set of reducer, that is, However, compared with the traditional transmission device which needs two sets of power sources to drive, the utility model is not only conducive to improving the accuracy of the transmission speed ratio, but also has the advantages of compact structure, space saving, easy installation, convenient adjustment, simple operation and reduced energy consumption); a bearing assembly IA is installed in the inner cavity of the two tensioning wheels 13 (to ensure that the tensioning wheels 13 can rotate smoothly), and an inner and outer nested bearing assembly ⅡB and a bearing seat 27 are installed on the shaft head of the passive licker-in roller and between the passive licker-in roller and the passive synchronous pulley (the bearing assembly ⅡB ensures that the bearing seat 27 can rotate smoothly;The bearing seat 27 provides an installation foundation and installation space for the bearing assembly ⅡB). The right side of the bearing seat is connected to a bearing seat bracket 7 by a threaded connection (the bearing seat bracket 7 is the installation foundation of the two tensioning wheels 13, and in the process of tensioning, the screw assembly C pushes and pulls the bearing seat bracket 7 to drive the two tensioning wheels 13 to rotate along the shaft head of the passive licker-in roller 2 as a whole, so as to ensure that the double-sided toothed synchronous belt 12 always wraps the passive licker-in roller 2 with a larger wrap angle during the transmission process, so as to ensure the smooth and accurate transmission). The outer extension ends of the two bearing assemblies ⅠA are connected to the bearing seat bracket 7 by a threaded connection (to ensure that the bearing seat bracket 7 rotates When the two tensioning wheels 13 are driven to rotate along the shaft head of the passive licker-in roller 2 as a whole); an adjusting screw assembly C for adjusting the rotation angle of the bearing seat bracket is installed between the bearing seat bracket 7 and the frame 20 (the rotation angle of the bearing seat bracket 7 can be adjusted by means of the adjusting screw assembly C during the tensioning process - that is, the two tensioning wheels 13 are driven to rotate along the shaft head of the passive licker-in roller 2 as a whole to ensure that the double-sided toothed synchronous belt 12 always wraps the passive licker-in roller 2 with a larger wrap angle during the transmission process. Therefore, the utility model can realize the accurate and stable transmission of power and transmission from the active transfer roller to the passive licker-in roller, and ensure a stable transmission speed ratio). ;

[0021] The bearing seat bracket 7 described in the utility model is composed of an S-shaped bracket plate 7-1 and a V-shaped bracket plate 7-2 which are positioned and welded together by mortise and tenon joints (the V-shaped bracket plate 7-2 is used to connect the bearing seat 27 and the S-shaped bracket plate 7-1; the S-shaped bracket plate 7-1 serves as the installation base for the two tensioning wheels 13); a mounting hole connected to the bottom plate of the bearing seat 27 is processed on the lower half of the V-shaped bracket plate 7-2 (the bearing seat bracket 7 and the bearing seat 27 can be quickly connected by screwing on the bolts, which is also convenient for disassembly); support shaft insertion holes (for installing the support shaft 14) are respectively processed on the two distal ends of the S-shaped bracket plate 7-1, a card embedding groove for positioning the V-shaped bracket plate 7-2 is processed on the left outer side of the S-shaped bracket plate 7-1, and a pin shaft hole is processed at the left tail plate at the bottom of the S-shaped bracket plate 7-1 (for inserting the pin shaft 25 to achieve quick connection and quick disassembly of the screw rod 24 and the S-shaped bracket plate 7-1).

[0022] The adjusting screw assembly C described in the utility model comprises a screw seat 23 screwed on the outer side of the front end of the frame 20, a screw 24 penetrating the screw seat, a fixing nut 22 attached to both sides of the screw seat for fastening the screw, a pin 25 connecting the other end of the screw with the S-shaped bracket plate 7-1 in the bearing seat bracket 7 and a matching retaining ring III 26, and a top screw 21 for fixing the screw seat (the screw seat 23 is the installation base of the screw 24, and is connected to the frame 20 through the top screw 21; the fixing nut 22 is used to lock and fix the position of the screw 24; the pin 25 realizes the screw 24 and The quick connection and quick disassembly of the S-shaped bracket plate 7-1); a mounting hole matching the screw 24 is processed along the thickness direction of the rear end of the screw seat 23 (to facilitate the installation of the screw 24); the front end of the screw seat 23 is processed into a cylinder, and a top screw positioning ring groove is processed radially on the cylindrical surface (for inserting the top screw 21), and a screw seat embedded cylindrical blind hole is processed at the corresponding installation position on the frame 20 (for embedding the front end cylindrical section of the screw seat 23); a pin shaft mounting hole matching the pin shaft 25 is processed at the other end of the screw rod 24 (for inserting the pin shaft 25).

[0023] The bearing assembly IA described in the utility model includes a support shaft 14, a sleeve Ⅰ16 which is sleeved on the support shaft and symmetrically arranged from the inside to the outside, a first rolling bearing 15, a second rolling bearing 17, and two retaining rings Ⅰ18; a shoulder Ⅰ13-1 is processed in the center of the inner cavity of the tensioning wheel 13, and retaining ring clamping grooves Ⅰ13-2 are processed in the inner cavity of the tensioning wheel at both ends of the shoulder; a thread matching the nut 19 is processed at the outer extended end of the support shaft 14; the length of the sleeve Ⅰ16 is consistent with the length of the shoulder Ⅰ13-1, and the outer diameter of the sleeve Ⅰ16 matches the inner diameter of the shoulder Ⅰ13-1; the inner diameters of the first rolling bearing 15, the second rolling bearing 17, and the sleeve Ⅰ16 all match the diameter of the support shaft 14; the outer diameter and width of the retaining ring Ⅰ18 match the outer diameter and width of the retaining ring clamping groove Ⅰ13-2.

[0024] The bearing assembly ⅡB described in the utility model comprises a sleeve Ⅱ9 which is sleeved on the shaft head of the passive licker-in roller and is located between the passive licker-in roller and the passive synchronous pulley, a third rolling bearing 8 and a fourth rolling bearing 10 which are symmetrically arranged at the front and rear ends of the sleeve Ⅱ9, and a retaining ring Ⅱ11 which is respectively blocked at the outer ends of the third rolling bearing 8 and the fourth rolling bearing 10; a shoulder Ⅱ27-1 is processed in the middle of the inner cavity of the bearing seat 27, and retaining ring clamping grooves Ⅱ27-2 are processed in the inner cavity of the bearing seat at both ends of the shoulder; the length of the sleeve Ⅱ9 is consistent with the length of the shoulder Ⅱ27-1, and the outer diameter of the sleeve Ⅱ9 matches the inner diameter of the shoulder Ⅱ27-1; the inner diameters of the third rolling bearing 8, the fourth rolling bearing 10 and the sleeve Ⅱ9 all match the diameter of the shaft head of the passive licker-in roller; the outer diameter and width of the retaining ring Ⅱ11 match the outer diameter and width of the retaining ring clamping groove Ⅱ27-2.

[0025] The specific usage of this utility model is as follows:

[0026] First, assemble the utility model according to the relative assembly relationship shown in the above structural description and the attached drawings. Next, connect a set of reducers as the supporting power source of the utility model to the utility model. Then, quickly tighten the double-sided toothed synchronous belt 12 by rotating and tightening the fixing nut 22 on the screw 24. In other words, adjust the rotation angle of the bearing seat bracket 7 by the position of the screw 24, that is, drive the two tensioning wheels 13 to rotate along the shaft head of the passive licker-in roller 2 as a whole to ensure that the double-sided toothed synchronous belt 12 always wraps the passive licker-in roller 2 with a larger wrap angle during the transmission process. Subsequently, the transmission parameters of the active transfer roller 1 are input and transmitted to the passive licker-in roller 2 through the active synchronous pulley 3, the double-sided toothed synchronous belt 12 and the passive synchronous pulley 5, so that the active transfer roller 1 drives the passive licker-in roller 2 to rotate in opposite directions at a certain transmission speed ratio. The transmission ratio between the active transfer roller 1 and the passive licker-in roller 2 is determined by the gear ratio of the active synchronous pulley 3 and the passive synchronous pulley 5. In addition, during the transmission process, the double-sided toothed synchronous belt 12 always wraps the passive licker-in roller 2 with a large wrap angle. Therefore, the utility model can realize accurate and stable transmission of power and transmission from the active transfer roller to the passive licker-in roller, ensure a stable transmission speed ratio, and smoothly grab the mat cotton and transfer it to the subsequent pre-combing station of the carding machine.

Claims

1. A synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine, characterized in that: The synchronous belt transmission and tensioning device comprises an active transfer roller (1) and a passive licker-in roller (2) arranged in parallel and rotating in opposite directions, an active synchronous pulley (3) connected to the shaft head of the active transfer roller via an expansion sleeve I (4), a passive synchronous pulley (5) connected to the shaft head of the passive licker-in roller via an expansion sleeve II (6), two tensioning wheels (13) respectively arranged at the upper and lower ends of the right half of the passive synchronous pulley (5), and a double-sided toothed synchronous belt (12) whose inner tooth surface meshes with the active synchronous pulley and the two tensioning wheels and whose outer tooth surface is combined with the passive synchronous pulley in a wrap angle and meshing manner; A bearing assembly I (A) is installed in the inner cavity of the tension wheel (13); an inner and outer nested bearing assembly II (B) and a bearing seat (27) are installed on the shaft head of the passive licker-in roller and at a position between the passive licker-in roller and the passive synchronous pulley; a bearing seat bracket (7) is connected to the right side of the bearing seat by means of a threaded connection; and the outer extension ends of the two bearing assemblies I (A) are connected to the bearing seat bracket (7) by means of a threaded connection; and an adjusting screw assembly (C) for adjusting the rotation angle of the bearing seat bracket is installed between the bearing seat bracket (7) and the frame (20).

2. A synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine according to claim 1, characterized in that: The bearing seat bracket (7) is composed of an S-shaped bracket plate (7-1) and a V-shaped bracket plate (7-2) which are positioned and welded together by mortise and tenon joints; a mounting hole connected to the bottom plate of the bearing seat (27) is processed on the lower half of the V-shaped bracket plate (7-2); support shaft insertion holes are processed on the two distal ends of the S-shaped bracket plate (7-1), a clamping groove for positioning the V-shaped bracket plate (7-2) is processed on the left outer side of the S-shaped bracket plate (7-1), and a pin shaft hole is processed on the left tail plate of the bottom of the S-shaped bracket plate (7-1).

3. A synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine according to claim 1, characterized in that: The adjusting screw assembly (C) comprises a screw seat (23) screwed onto the outer side of the front end of the frame (20), a screw (24) penetrating the screw seat, fixing nuts (22) attached to both sides of the screw seat for fastening the screw, a pin (25) connecting the other end of the screw with the S-shaped bracket plate (7-1) in the bearing seat bracket (7) and a matching retaining ring III (26), and a top screw (21) for fixing the screw seat; a mounting hole matching the screw (24) is machined along the thickness direction of the rear end of the screw seat (23); the front end of the screw seat (23) is machined into a cylinder, and a top screw positioning ring groove is machined radially on the cylindrical surface, and a screw seat embedded cylindrical blind hole is machined at the corresponding mounting position on the frame (20); and a pin mounting hole matching the pin (25) is machined at the other end of the screw (24).

4. A synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine according to claim 1, characterized in that: The bearing assembly I (A) comprises a support shaft (14), a sleeve I (16) which is sleeved on the support shaft and symmetrically arranged from the inside to the outside, a first rolling bearing (15), a second rolling bearing (17), and two retaining rings I (18); a shoulder I (13-1) is processed in the center of the inner cavity of the tension wheel (13), and retaining ring clamping grooves I (13-2) are processed in the inner cavity of the tension wheel at both ends of the shoulder; a thread matching the nut (19) is processed at the outer extending end of the support shaft (14); the length of the sleeve I (16) is consistent with the length of the shoulder I (13-1), and the outer diameter of the sleeve I (16) matches the inner diameter of the shoulder I (13-1); the inner diameters of the first rolling bearing (15), the second rolling bearing (17), and the sleeve I (16) all match the diameter of the support shaft (14); the outer diameter and width of the retaining ring I (18) match the outer diameter and width of the retaining ring clamping groove I (13-2).

5. A synchronous belt transmission and tensioning device with parallel rollers rotating in opposite directions for a carding machine according to claim 1, characterized in that: The bearing assembly II (B) comprises a sleeve II (9) which is sleeved on the shaft head of the passive licker-in roller and is located between the passive licker-in roller and the passive synchronous pulley, a third rolling bearing (8) and a fourth rolling bearing (10) which are symmetrically arranged at the front and rear ends of the sleeve II (9), and a retaining ring II (11) which is respectively retained at the outer ends of the third rolling bearing (8) and the fourth rolling bearing (10); a shoulder II (27-1) is machined in the middle of the inner cavity of the bearing seat (27), and retaining ring locking grooves II (27-2) are machined in the inner cavity of the bearing seat at both ends of the shoulder; the length of the sleeve II (9) is consistent with the length of the shoulder II (27-1), and the outer diameter of the sleeve II (9) matches the inner diameter of the shoulder II (27-1); the inner diameters of the third rolling bearing (8), the fourth rolling bearing (10) and the sleeve II (9) all match the diameter of the shaft head of the passive licker-in roller; the outer diameter and width of the retaining ring II (11) match the outer diameter and width of the retaining ring locking groove II (27-2).

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