Unwinding device for jacquard fabric

Abstract

The invention relates to the technical field of textile equipment, and in particular to an unwinding device for jacquard fabric, which mainly solves the problem in the prior art that fabric unwinding devices are prone to fabric deviation during the unwinding process, and comprises a frame, a control system, a fabric roller, two driving mechanisms and an auxiliary unwinding mechanism, wherein the two driving mechanisms are axially symmetrically distributed on the lateral sides of the frame, and are used to place the fabric roller, drive the fabric roller to rotate, and drive the fabric roller to and from a roll changing station and an unwinding station, wherein the auxiliary unwinding mechanism comprises a base, an unwinding frame, a first driving assembly, a second driving assembly, a third driving assembly, a transmission assembly, a transverse guiding assembly, a longitudinal guiding assembly, a bottom roller and an auxiliary roller assembly, wherein the longitudinal guiding assembly is arranged on the frame, the base is arranged on the longitudinal guiding mechanism, the first driving assembly is connected to the base, and is used to drive the base to slide along the guiding direction of the longitudinal guiding assembly, and the transverse guiding assembly is arranged on the base.

Description

Technical Field

[0001] The invention relates to the technical field of cloth weaving equipment, and in particular to an unwinding device for jacquard cloth. Background Art

[0002] During the use of the cloth, the cloth needs to be evenly unrolled into the machine for further processing. A cloth unwinding device is needed during the cloth unwinding process. The traditional cloth unwinding device has a single structure, which only puts the rolled cloth on the reel, and drives the cloth to rotate by the rotation of the reel to perform the unwinding operation. During the unwinding process, the left and right, front and back are not fixed, and the unwinding amount is not accurately positioned, which can easily cause the rolled cloth to become loose, resulting in uneven cloth unwinding and causing unqualified subsequent cloth processing.

[0003] Authorization announcement number CN216129057U discloses a fabric unwinding device, including a fixed frame and baffles arranged at both ends of the fixed frame, two reels are arranged between the baffles, the reels are used to place fabric rolls, limiting shafts are symmetrically arranged at the upper ends of both sides of the baffles, a fixed shaft is arranged on the outer side of the baffle, the fixed shaft performs a leveling operation on the unrolled fabric, a roller is arranged at the bottom of the fixed frame, a slide groove is arranged at the connection position between the two ends of the reel and the baffle, a limiting plate is vertically symmetrically arranged on the limiting shaft, a positioning device is arranged at the upper end of the slide groove inside the baffle, an adjusting support foot is arranged at the bottom of the fixed frame, and the limiting shaft and the baffle adjust the left and right sides of the fabric roll on the reel. The right and front and back are limited, the positioning device controls the height of the cloth roll unwinding on the reel, improves the flatness and accuracy of the unwinding, and improves the production quality. The adjustable support feet are retractable. When the adjustable support feet are away from the ground during the extension and retraction process, the entire unwinding device can be transported by the rollers. When there is no need for transportation, the bottom of the adjustable support feet is extended to the same horizontal plane as the bottom of the rollers to support the unwinding device. By setting the adjustable support feet, the unwinding device can be transported, and the supporting force of the unwinding device can be increased when the unwinding device is stationary, to avoid the unwinding device shaking when only the rollers are used for support, thereby affecting the unwinding quality.

[0004] However, the cloth roll is formed by winding the cloth around a paper drum. When replacing, it is necessary to use lifting equipment or manually lift it and place it on the drum. Then, by adjusting the height of the electric push rod, the clamping shafts are set on both sides of the cloth roll and the cloth roll is clamped. In this process, the cloth wrapped around the paper drum is easily loosened, making the cloth easily deviate during the unwinding process. In addition, relative sliding is likely to occur between the guide roller and the cloth, exacerbating the problem of unwinding deviation. Summary of the invention

[0005] Therefore, in view of the above-mentioned problems, the present invention provides a jacquard fabric unwinding device, which mainly solves the problem that the fabric unwinding device in the prior art is prone to fabric deviation during the unwinding process.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A unwinding device for jacquard fabric, comprising a frame, a control system, a fabric roller, two driving mechanisms and an auxiliary unwinding mechanism, wherein the frame is provided with a roll changing station and an unwinding station, the two driving mechanisms are axially symmetrically distributed on the lateral sides of the frame, and are used for placing the fabric roller, driving the fabric roller to rotate, and driving the fabric roller to and from the roll changing station and the unwinding station, the driving mechanism comprising a first driving motor, a second driving motor, a first supporting sleeve, a second supporting sleeve, a supporting shaft, a rotating shaft, a sleeve, a swing seat, a first bearing, a second bearing, a third bearing, a fourth bearing, a first synchronous pulley, a second synchronous pulley, a third synchronous pulley, a fourth synchronous pulley, a fifth synchronous pulley, a sixth synchronous pulley, a first transmission belt, a second transmission belt, a third transmission belt, an electromagnetic clutch and a clamping assembly, the first supporting sleeve is fixedly arranged on the frame, the sleeve is rotatably arranged on the first supporting sleeve through the first bearing, the first synchronous pulley and the second synchronous pulley are fixedly arranged on the sleeve, and are distributed on both sides of the axial direction of the first supporting sleeve, the The third synchronous pulley is arranged on the first driving motor, the first transmission belt sleeve is arranged on the third synchronous pulley and the first synchronous pulley, the support shaft is rotatably arranged on the sleeve through the second bearing, the fourth synchronous pulley is fixed on the support shaft and distributed on one axial side of the sleeve, the fifth synchronous pulley is arranged on the second driving motor, the second transmission belt sleeve is arranged on the fifth synchronous pulley and the fourth synchronous pulley, the swing seat is fixed on the other axial end of the support shaft, the second support sleeve is fixed on the free end of the swing seat, the rotating shaft is rotatably arranged on the second support sleeve through the third bearing, the sixth synchronous pulley is rotatably arranged on one axial end of the rotating shaft through the fourth bearing, the third transmission belt sleeve is provided on the sixth synchronous pulley and the second synchronous pulley, the electromagnetic clutch connects the sixth synchronous pulley and the rotating shaft, the clamping assembly is arranged at the other end of the rotating shaft, and is used to clamp and fix one axial end of the cloth roller, and the auxiliary unwinding mechanism is arranged at the output end of the two driving mechanisms to improve the cloth unwinding stability;

[0008] The auxiliary unwinding mechanism includes a base, an unwinding rack, a first driving component, a second driving component, a third driving component, a transmission component, a lateral guiding component, a longitudinal guiding component, a bottom roller, and an auxiliary roller component. The longitudinal guiding component is arranged on the frame. The base is arranged on the longitudinal guiding mechanism. The first driving component is connected to the base and is used to drive the base to slide along the guiding direction of the longitudinal guiding component. The lateral guiding component is arranged on the base. The unwinding rack is arranged on the lateral guiding component. The second driving component is connected to the unwinding rack and is used to drive the unwinding rack to slide along the guiding direction of the lateral guiding component. The bottom roller is rotatably arranged on the unwinding rack. The auxiliary roller component is rotatably arranged on the unwinding rack and is located above the bottom roller. The auxiliary roller component includes an auxiliary roller. The third driving component synchronously drives the bottom roller and the auxiliary roller component through the transmission component.

[0009] Further, the clamping component includes a fixed seat, a driving cylinder, a top ring, a clamping sleeve, a baffle, a positioning rod, a top block, a first spring, and a linear bearing. The fixed seat is fixedly arranged on the rotating shaft. The top ring is sleeved on the fixed seat. The driving cylinder is arranged on the fixed seat and is connected to the top ring. The clamping sleeve is slidably arranged on the fixed seat through the linear bearing, and the inner end of the clamping sleeve is connected to the top ring. A connecting plate is fixedly arranged inside the clamping sleeve. The positioning rod is arranged on the connecting plate, so that a clamping groove for one end of the fabric roller to penetrate into is formed inside the clamping sleeve. The top block has a sliding groove. The top block is sleeved on the positioning rod through the sliding groove. The first spring is sleeved on the positioning rod and is distributed between the top block and the connecting plate. The baffle is arranged at the free end of the clamping sleeve. A clamping structure for clamping an axial end of the fabric roller is arranged on the clamping sleeve.

[0010] Further, the clamping structure includes a clamping cylinder integrally connected to the clamping sleeve, a top rod arranged inside the clamping cylinder and extending through the clamping sleeve to the inside of the clamping groove at one end, and a second spring arranged between the top rod and the clamping cylinder.

[0011] Further, the rotation center of the auxiliary roller does not coincide with the rotation center of the auxiliary roller component, so that the auxiliary roller periodically fits with the bottom roller.

[0012] Further, the auxiliary roller component further includes two rotating shafts and a mounting seat. The two rotating shafts are arranged on both sides of the mounting seat. The mounting seat includes a first seat body with a "凵"-shaped structure and a second seat body bolted to the two free ends of the first seat body. The auxiliary roller is distributed in the middle of the first seat body, and both ends of the auxiliary roller are clamped between the first seat body and the second seat body. The central axis of the rotating shaft does not coincide with the central axis of the auxiliary roller.

[0013] Further, the auxiliary roller includes a first intermediate shaft, a fifth bearing, and a first roller body. The first roller body is sleeved on the first intermediate shaft through the fifth bearing.

[0014] Furthermore, the first driving assembly and the second driving assembly are both cylinders or hydraulic cylinders or electric push rods.

[0015] Furthermore, the cloth roller includes a second intermediate shaft, a second roller body, a top sheet, a reset spring and two tensioning components. The second roller body is sleeved on the second intermediate shaft. A mounting hole is provided at the center axis of the second intermediate shaft. The second intermediate shaft and the second roller body are provided with mounting grooves connected to the mounting hole. The top sheet is provided at the mounting groove. The two tensioning components are provided in the mounting hole and connected to the top sheet for driving the top sheet to move in the radial direction of the second intermediate shaft. The reset spring is provided between the two tensioning components.

[0016] Furthermore, the tensioning assembly includes a slide bar arranged in the mounting hole, a first conical block arranged on the slide bar and distributed at the mounting groove, and a second conical block arranged on the back side of the top sheet, wherein the second conical block abuts against the first conical block.

[0017] By adopting the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: when the unwinding device of the jacquard fabric is used, the control system synchronously controls the actions of the two driving mechanisms, thereby driving the fabric roller to and fro between the roll changing station and the unwinding station, so that the clamping assembly on the rotating shaft reciprocates between the roll changing station and the unwinding station, and can transfer the fabric roller from the high area of ​​the unwinding station to the low area of ​​the roll changing station, which is convenient for replacing the fabric roll, reduces the intensity of the staff, improves the convenience of replacement, and thus improves the replacement efficiency, and after the fabric is unwound by the fabric roller, it is transported through the bottom roller and the auxiliary roller assembly, and the third driving assembly synchronously drives the bottom roller and the auxiliary roller assembly to rotate through the transmission assembly, thereby realizing the clamping and conveying of the fabric, and because the rotation center of the auxiliary roller is aligned with the rotation center of the auxiliary roller assembly The centers of the auxiliary rollers do not overlap, so that the auxiliary rollers form an eccentric state, so that the auxiliary rollers are periodically fitted with the bottom rollers, that is, the auxiliary rollers and the bottom rollers periodically clamp the cloth, so that the stability of the cloth transmission can be maintained, and the first drive assembly and the second drive assembly are cooperated to realize the cloth correction and tension adjustment. Specifically, when the cloth deviates, the second drive assembly drives the unwinding frame to move in the transverse direction, thereby driving the bottom roller and the auxiliary roller to move. The auxiliary roller and the bottom roller periodically clamp the cloth, which can quickly and effectively adjust the deflection of the cloth, and the correction speed is fast. Similarly, when the cloth tension changes, the first drive assembly drives the unwinding frame to move in the longitudinal direction, thereby driving the bottom roller and the auxiliary roller to move. The auxiliary roller and the bottom roller periodically clamp the cloth, which can quickly and effectively adjust, and the response speed is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a top view of the structure of an embodiment of the present invention;

[0019] Figure 2is a schematic structural diagram of a driving mechanism in an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of a clamping assembly in an embodiment of the present invention;

[0021] Figure 4 is a front view structural schematic diagram of the auxiliary unwinding mechanism in an embodiment of the present invention;

[0022] Figure 5 1 is a left-side structural schematic diagram of an auxiliary roller assembly and a bottom roller in an embodiment of the present invention;

[0023] Figure 6 is a schematic cross-sectional structural diagram of a cloth roller in an embodiment of the present invention;

[0024] Figure 7 It is a circuit module diagram of an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Frame; 2. Control system; 3. Cloth roller; 4. Driving mechanism; 7. Auxiliary unwinding mechanism; 21. Controller; 22. First speed encoder; 23. Second speed encoder; 24. Position sensor; 25. Pressure sensor; 31. Second intermediate shaft; 32. Second roller body; 33. Top sheet; 34. Return spring; 35. Mounting hole; 36. Mounting slot; 37. Sliding rod; 38. First conical block; 39. Second conical block;

[0027] 41. first drive motor; 42. second drive motor; 43. first support sleeve; 44. second support sleeve; 45. support shaft; 46. rotating shaft; 47. sleeve; 48. swing seat; 49. first bearing; 50. second bearing; 51. third bearing; 52. fourth bearing; 53. first synchronous pulley; 54. second synchronous pulley; 55. third synchronous pulley; 56. fourth synchronous pulley; 57. fifth synchronous pulley; 58. sixth synchronous pulley; 59. first transmission belt; 60. second transmission belt; 61. third transmission belt; 62. electromagnetic clutch; 63. clamping assembly;

[0028] 71. base; 72. unwinding frame; 73. first drive assembly; 74. second drive assembly; 75. third drive assembly; 76. transmission assembly; 77. transverse guide assembly; 78. longitudinal guide assembly; 79. bottom roller; 80. auxiliary roller assembly; 81. auxiliary roller; 82. rotating shaft; 83. mounting seat;

[0029] 101, roll changing station; 102, roll unwinding station;

[0030] 631, fixed seat; 632, driving cylinder; 633, top ring; 634, baffle; 635, positioning rod; 636, top block; 637, first spring; 638, linear bearing; 639, clamping sleeve;

[0031] 670, connecting plate; 671, clamping groove; 672, sliding groove; 673, clamping cylinder; 674, ejector rod; 675, second spring;

[0032] 811. first intermediate shaft; 812. fifth bearing; 813. first roller body; 831. first seat body; 832. second seat body; 833. bolt. DETAILED DESCRIPTION

[0033] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0034] The embodiments of the present invention are:

[0035] refer to Figures 1 to 7As shown, a unwinding device for jacquard fabric comprises a frame 1, a control system 2, a fabric roller 3, two driving mechanisms 4 and an auxiliary unwinding mechanism 7, wherein the frame 1 is provided with a roll changing station 101 and an unwinding station 102, and the two driving mechanisms 4 are axially symmetrically distributed on the lateral sides of the frame 1, and are used for placing the fabric roller 3, driving the fabric roller 3 to rotate, and driving the fabric roller 3 to and from the roll changing station 101 and the unwinding station 102, and the driving mechanism 4 comprises a first driving motor 41, a second driving motor 42, a first supporting sleeve 43, a second supporting sleeve 44, a supporting shaft 45, a rotating shaft 46, a shaft sleeve 47, a swing seat 48, and a first driving motor 41. A bearing 49, a second bearing 50, a third bearing 51, a fourth bearing 52, a first synchronous pulley 53, a second synchronous pulley 54, a third synchronous pulley 55, a fourth synchronous pulley 56, a fifth synchronous pulley 57, a sixth synchronous pulley 58, a first transmission belt 59, a second transmission belt 60, a third transmission belt 61, an electromagnetic clutch 62 and a clamping assembly 63, the first support sleeve 43 is fixedly mounted on the frame 1, the shaft sleeve 47 is rotatably mounted on the first support sleeve 43 through the first bearing 49, the first synchronous pulley 53 and the second synchronous pulley 54 are fixedly mounted on the shaft sleeve 47, and are distributed on the first support sleeve 4 3, the third synchronous pulley 55 is provided on the first drive motor 41, the first transmission belt 59 is sleeved on the third synchronous pulley 55 and the first synchronous pulley 53, the support shaft 45 is rotatably passed through the shaft sleeve 47 through the second bearing 50, the fourth synchronous pulley 56 is fixed on the support shaft 45, and is distributed on one axial side of the shaft sleeve 47, the fifth synchronous pulley 57 is provided on the second drive motor 42, the second transmission belt 60 is sleeved on the fifth synchronous pulley 57 and the fourth synchronous pulley 56, the swing seat 48 is fixed on the other axial end of the support shaft 45, and the second support sleeve 44 is fixed on the support shaft 45. Fixed on the free end of the swing seat 48, the rotating shaft 46 is rotatably installed on the second support sleeve 44 through the third bearing 51, the sixth synchronous pulley 58 is rotatably installed on the axial end of the rotating shaft 46 through the fourth bearing 52, the third transmission belt 61 is sleeved on the sixth synchronous pulley 58 and the second synchronous pulley 54, the electromagnetic clutch 62 connects the sixth synchronous pulley 58 and the rotating shaft 46, the clamping assembly 63 is arranged at the other end of the rotating shaft 46, and is used to clamp and fix one axial end of the cloth roller 3, and the auxiliary unwinding mechanism 7 is arranged at the output end of the two driving mechanisms 4, and is used to improve the cloth unwinding stability.

[0036] When the unwinding device of the jacquard fabric is used, the control system 2 synchronously controls the actions of the two driving mechanisms 4, thereby driving the fabric roller 3 to reciprocate between the reel changing station 101 and the unwinding station 102. Specifically, the fabric roller 3 at the reel changing station 101 is inserted into the fabric roll, and the axial ends of the fabric roller 3 are clamped by the clamping assembly 63. The second driving motor 42 drives the support shaft 45 to rotate through the fifth pulley 57, the fourth pulley 56 and the second transmission belt 60, and then drives the rotating shaft 46 to swing through the swing seat 48, so that the clamping assembly 63 on the rotating shaft 46 reciprocates between the reel changing station 101 and the unwinding station 102, so that the fabric roller 3 can be reciprocated between the reel changing station 101 and the unwinding station 102. The cloth roller 3 is transferred from the high area of ​​the unwinding station 102 to the low area of ​​the roll changing station 101, which is convenient for replacing the cloth roll, reduces the strength of the staff, improves the convenience of replacement, and thus improves the replacement efficiency. In addition, the first drive motor 41 drives the shaft sleeve 47 to rotate through the first synchronous pulley 53, the third synchronous pulley 55 and the first transmission belt 59, and then the second synchronous pulley 54 on the shaft sleeve 47 is connected to the sixth synchronous pulley 58 on the rotating shaft 46 through the third transmission belt 61, thereby driving the rotating shaft 46 to rotate, so that the cloth roller 3 rotates and unwinds, and cooperates with the auxiliary unwinding mechanism 7 to improve the cloth unwinding stability.

[0037] In addition, the clamping assembly 63 includes a fixed seat 631, a driving cylinder 632, a top ring 633, a clamping sleeve 639, a baffle 634, a positioning rod 635, a top block 636, a first spring 637 and a linear bearing 638. The fixed seat 631 is fixed on the rotating shaft 46, the top ring 633 is sleeved on the fixed seat 631, the driving cylinder 632 is arranged on the fixed seat 631 and connected to the top ring 633, the clamping sleeve 639 is slidably arranged on the fixed seat 631 through the linear bearing 638, and the inner end of the clamping sleeve 639 is connected to the top ring 633, a connecting plate 670 is fixed in the clamping sleeve 639, and the positioning rod 635 is arranged on the connecting plate 670, so that the clamping sleeve 639 has a There is a clamping groove 671 for one end of the cloth roller 3 to penetrate, the top block 636 has a slide groove 672, and the top block 636 is sleeved on the positioning rod 635 through the slide groove 672. The first spring 637 is sleeved on the positioning rod 635 and distributed between the top block 636 and the connecting plate 670. The baffle 634 is arranged at the free end of the clamping sleeve 639, and the clamping sleeve 639 is provided with a clamping structure for clamping one axial end of the cloth roller 3. The clamping structure includes a clamping cylinder 673 integrally connected to the clamping sleeve 639, a push rod 674 arranged in the clamping cylinder 673 and one end of which passes through the clamping sleeve 639 and extends to the clamping groove 671, and a second spring 675 arranged between the push rod 674 and the clamping cylinder 673.

[0038] The working principle of the clamping assembly is: the driving cylinder 632 drives the clamping sleeve 639 to move outward along the axial direction of the fixed seat 631, so that the clamping sleeve 639 is sleeved on one axial end of the cloth roller 3, and the top block 636 in the clamping groove 671 abuts against the end surface of the cloth roller 3, and continues to drive the clamping sleeve 639 to move outward, so that the top block 636 squeezes the first spring 637 to move inward, thereby increasing the friction between the top block 636 and the cloth roller 3, and avoiding the radial runout and axial movement of the cloth roller 3, thereby improving the unwinding quality of the cloth roller 3, and through the second spring 675, the top rod 674 is clamped on the keyway of the cloth roller 3 to prevent the cloth roller 3 and the clamping sleeve 639 from rotating relative to each other, thereby improving the installation performance of the operation.

[0039] In this embodiment, the auxiliary unwinding mechanism 7 includes a base 71, an unwinding frame 72, a first drive assembly 73, a second drive assembly 74, a third drive assembly 75, a transmission assembly 76, a transverse guide assembly 77, a longitudinal guide assembly 78, a bottom roller 79 and an auxiliary roller assembly 80. The first drive assembly 73 and the second drive assembly 74 are cylinders or hydraulic cylinders or electric push rods, preferably electric push rods. The third drive assembly 75 is a drive motor. The longitudinal guide assembly 78 is arranged on the frame 1, and the base 71 is arranged on the longitudinal guide mechanism 78. The first drive assembly 73 is connected to the base 71 to drive the base 71 to slide along the guide direction of the longitudinal guide assembly 78. The transverse guide assembly 77 is arranged on the base 71, the unwinding frame 72 is arranged on the transverse guide assembly 77, the second driving assembly 74 is connected to the unwinding frame 72, and is used to drive the unwinding frame 72 to slide along the guiding direction of the transverse guide assembly 77, the bottom roller 79 is rotatably arranged on the unwinding frame 72, the auxiliary roller assembly 80 is rotatably arranged on the unwinding frame 72, and is located on the upper side of the bottom roller 79, the auxiliary roller assembly 80 includes an auxiliary roller 81, the rotation center of the auxiliary roller 81 does not coincide with the rotation center of the auxiliary roller assembly 80, so that the auxiliary roller 81 periodically fits with the bottom roller 79, and the third driving assembly 75 synchronously drives the bottom roller 79 and the auxiliary roller assembly 80 to connect through the transmission assembly 76.

[0040] After the fabric is unrolled from the fabric roller 3, it is conveyed through the space between the bottom roller 79 and the auxiliary roller assembly 80. The third driving assembly 75 synchronously drives the rotation of the bottom roller 79 and the auxiliary roller assembly 80 through the transmission assembly 76 to realize the clamping and conveying of the fabric. And because the rotation center of the auxiliary roller 81 does not coincide with the rotation center of the auxiliary roller assembly 80, the auxiliary roller 81 forms an eccentric state, so that the auxiliary roller 81 periodically fits with the bottom roller 79, that is, the auxiliary roller 81 and the bottom roller 79 periodically clamp the fabric. In this way, the stability of the fabric transmission can be maintained, and in cooperation with the first driving assembly 73 and the second driving assembly 74, the deviation correction and tension adjustment of the fabric are realized. Specifically, when the fabric deviates, the second driving assembly 74 drives the unwinding rack 72 to move in the transverse direction, thereby driving the bottom roller 79 and the auxiliary roller 81 to move. The periodic clamping of the fabric by the auxiliary roller 81 and the bottom roller 79 can quickly and effectively adjust the skew of the fabric, and the deviation correction speed is fast. Similarly, when the fabric tension changes, the first driving assembly 73 drives the unwinding rack 72 to move in the longitudinal direction, thereby driving the bottom roller 79 and the auxiliary roller 81 to move. The periodic clamping of the fabric by the auxiliary roller 81 and the bottom roller 79 can be quickly and effectively adjusted, and the response speed is fast.

[0041] Specifically, the auxiliary roller assembly 80 further includes two rotating shafts 82 and a mounting seat 83. The two rotating shafts 82 are arranged on both sides of the mounting seat 83. The mounting seat 83 includes a first seat body 831 in a "U" - shaped structure and a second seat body 832 locked to the two free ends of the first seat body 831 by bolts 833. The auxiliary roller 81 is distributed in the middle of the first seat body 831, and both ends of the auxiliary roller 81 are clamped between the first seat body 831 and the second seat body 832. The central axis of the rotating shaft 82 does not coincide with the central axis of the auxiliary roller 81. The auxiliary roller 81 includes a first intermediate shaft 811, a fifth bearing 812, and a first roller body 813. The first roller body 813 is arranged on the first intermediate shaft 811 through a fifth bearing sleeve 812, which is convenient for the installation of the auxiliary roller 81, occupies a small space, has high use convenience, and at the same time reduces the rotational inertia of the auxiliary roller 81. Furthermore, the rotational speed of the bottom roller 79 and the auxiliary roller assembly 80 can be greatly increased, and thus the unwinding efficiency can be improved.

[0042] In addition, the cloth roller 3 includes a second intermediate shaft 31, a second roller body 32, a top plate 33, a reset spring 34 and two tensioning components. The second roller body sleeve 32 is arranged on the second intermediate shaft 31. A mounting hole 35 is provided at the central axis of the second intermediate shaft 31. A mounting groove 36 connected to the mounting hole 35 is provided on the second intermediate shaft 31 and the second roller body 32. The top plate 33 is arranged at the mounting groove 36. The two tensioning components are arranged in the mounting hole 35 and connected to the top plate 33 to drive the top plate 33 to move in the radial direction of the second intermediate shaft 31. The reset spring 34 is arranged between the two tensioning components. The tensioning component includes a slide rod 37 arranged in the mounting hole 35, a first conical block 38 arranged on the slide rod 37 and distributed at the mounting groove 36, and a second conical block 39 arranged on the back side of the top plate 33. The second conical block 39 abuts against the first conical block 38.

[0043] When in use, the top block 636 abuts against the slide rod 37 and pushes the slide rod 37 inward to squeeze the reset spring 34 to move, and through the cooperation of the first conical block 38 and the second conical block 39, the top plate 33 moves outward and abuts against the inner surface of the paper tube of the cloth roll to achieve fixation. It can be used for unwinding cloth rolls of different specifications and sizes and has a wide range of applications.

[0044] In this embodiment, the control system 2 includes a controller 21, a first speed encoder 22 provided on the support shaft 45, a second speed encoder 23 provided on the rotating shaft 46, a position sensor 24 provided on the unwinding frame 72, and a pressure sensor 25 provided on the bottom roller 79. The first speed encoder 22, the second speed encoder 23, the position sensor 24 and the pressure sensor 25 are electrically connected to the input end of the controller 21, respectively. The first drive motor 41, the second drive motor 42, the first drive assembly 73, the second drive assembly 74 and the third drive assembly 75 are electrically connected to the output end of the controller 21, respectively. The control method of system 2 is: the bottom roller 79 is driven by the first drive motor assembly 73 to move along the longitudinal guide assembly 78, so that the bottom roller 79 is pressed against the surface of the cloth roll on the cloth roller 3, and the pressure sensor 25 is used for real-time detection. When the cloth roll is continuously unwound, the diameter of the cloth roll decreases, and the bottom roller 79 is driven by the first drive assembly 73 to continuously press against the surface of the cloth roll on the cloth roller 3, and the position of the bottom roller 79 is detected by the position sensor 24, so as to determine the real-time diameter of the cloth roll, and then determine the linear speed of the cloth roll, so as to facilitate the speed adjustment of the rotating shaft 46, so as to make the conveying speed of the cloth consistent, and then make the tension of the cloth balanced, thereby improving the unwinding quality.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A unwinding device for jacquard fabric, characterized in that: The invention comprises a frame, a control system, a cloth roller, two driving mechanisms and an auxiliary unwinding mechanism, wherein the frame is provided with a roll changing station and an unwinding station, and the two driving mechanisms are axially symmetrically distributed on the lateral sides of the frame, and are used for placing the cloth roller, driving the cloth roller to rotate, and driving the cloth roller to and from the roll changing station and the unwinding station, and the driving mechanism comprises a first driving motor, a second driving motor, a first supporting sleeve, a second supporting sleeve, a supporting shaft, a rotating shaft, a sleeve, a swing seat, a first bearing, a second bearing, a third bearing, a fourth bearing, a first synchronous pulley, a second synchronous pulley, a third synchronous pulley, a fourth synchronous pulley, a fifth synchronous pulley, a sixth synchronous pulley, a first transmission belt, a second transmission belt, a third transmission belt, an electromagnetic clutch and a clamping assembly, wherein the first supporting sleeve is fixedly arranged on the frame, the sleeve is rotatably arranged on the first supporting sleeve through the first bearing, the first synchronous pulley and the second synchronous pulley are fixedly arranged on the sleeve, and are distributed on both sides of the axial direction of the first supporting sleeve, and the third synchronous pulley The gear train is a gear train that is actuated by a plurality of gears and is used for rotating the gear train, and the gear train is actuated by a plurality of gears, wherein the gear train is actuated by a plurality of gears and is used for rotating the gear train. The auxiliary unwinding mechanism comprises a base, an unwinding frame, a first driving assembly, a second driving assembly, a third driving assembly, a transmission assembly, a transverse guiding assembly, a longitudinal guiding assembly, a bottom roller and an auxiliary roller assembly, wherein the longitudinal guiding assembly is arranged on the frame, the base is arranged on the longitudinal guiding mechanism, the first driving assembly is connected to the base for driving the base to slide along the guiding direction of the longitudinal guiding assembly, the transverse guiding assembly is arranged on the base, the unwinding frame is arranged on the transverse guiding assembly, the second driving assembly is connected to the unwinding frame for driving the unwinding frame to slide along the guiding direction of the transverse guiding assembly, the bottom roller is rotatably arranged on the unwinding frame, the auxiliary roller assembly is rotatably arranged on the unwinding frame and is located on the upper side of the bottom roller, the auxiliary roller assembly comprises an auxiliary roller, the third driving assembly synchronously drives the bottom roller and the auxiliary roller assembly to be connected through the transmission assembly, the rotation center of the auxiliary roller does not coincide with the rotation center of the auxiliary roller assembly, so that the auxiliary roller periodically fits with the bottom roller.

2. The unwinding device for jacquard fabric according to claim 1, characterized in that: The clamping assembly includes a fixed seat, a driving cylinder, a top ring, a clamping sleeve, a baffle, a positioning rod, a top block, a first spring and a linear bearing. The fixed seat is fixedly arranged on the rotating shaft, and the top ring is sleeved on the fixed seat. The driving cylinder is arranged on the fixed seat and connected to the top ring. The clamping sleeve is slidably arranged on the fixed seat through the linear bearing, and the inner end of the clamping sleeve is connected to the top ring. A connecting plate is fixedly arranged in the clamping sleeve. The positioning rod is arranged on the connecting plate, so that a clamping groove for one end of the fabric roller to penetrate into is formed in the clamping sleeve. The top block has a sliding groove, and the top block is sleeved on the positioning rod through the sliding groove. The first spring is sleeved on the positioning rod and distributed between the top block and the connecting plate. The baffle is arranged at the free end of the clamping sleeve, and a clamping structure for clamping the axial end of the fabric roller is arranged on the clamping sleeve.

3. The unwinding device for jacquard fabric according to claim 2, characterized in that: The clamping structure includes a clamping cylinder integrally connected to the clamping sleeve, a top rod arranged in the clamping cylinder and extending through the clamping sleeve to the clamping groove at one end, and a second spring arranged between the top rod and the clamping cylinder.

4. The unwinding device for jacquard fabric according to any one of claims 1 to 3, characterized in that: The auxiliary roller assembly further includes two rotating shafts and a mounting seat. The two rotating shafts are arranged on both sides of the mounting seat. The mounting seat includes a first seat body in a "U" shape structure and a second seat body bolted to the two free ends of the first seat body. The auxiliary roller is distributed in the middle of the first seat body, and both ends of the auxiliary roller are clamped between the first seat body and the second seat body. The central axis of the rotating shaft does not coincide with the central axis of the auxiliary roller.

5. The unwinding device for jacquard fabric according to claim 4, characterized in that: The auxiliary roller includes a first intermediate shaft, a fifth bearing and a first roller body. The first roller body is sleeved on the first intermediate shaft through the fifth bearing.

6. The unwinding device for jacquard fabric according to claim 5, characterized in that: Both the first driving component and the second driving component are cylinders or hydraulic cylinders or electric push rods.

7. The unwinding device for jacquard fabric according to claim 4, characterized in that: The fabric roller includes a second intermediate shaft, a second roller body, a top piece, a return spring and two tensioning components. The second roller body is sleeved on the second intermediate shaft. An installation hole is formed through the central axis of the second intermediate shaft. Installation grooves connected to the installation hole are arranged on the second intermediate shaft and the second roller body. The top piece is arranged at the installation groove. The two tensioning components are arranged in the installation hole and connected to the top piece for driving the top piece to move in the radial direction of the second intermediate shaft. The return spring is arranged between the two tensioning components.

8. The unwinding device for jacquard fabric according to claim 7, characterized in that: The tensioning component includes a sliding rod arranged in the installation hole, a first tapered block arranged on the sliding rod and distributed at the installation groove, and a second tapered block arranged on the back surface of the top piece. The second tapered block abuts against the first tapered block.

Images