Automatic tensioning winding and unwinding equipment

Abstract

The invention relates to automatic tensioning winding and unwinding equipment which comprises a tensioning frame, a main driving roller, a winding roller, a tensioning device and a plurality of cloth guide rollers are arranged on the tensioning frame, and a coiled material of an original cloth roll extends to the main driving roller through the cloth guide rollers to form a new cloth roll; the tensioning device comprises two adjusting arms, a hollow roller, a telescopic piece and a height adjusting roller, the two adjusting arms are located on the two sides of the tensioning frame respectively, and the upper ends of the adjusting arms are rotationally connected with the tensioning frame; the two ends of the hollow roller are rotationally connected with the lower ends of the two adjusting arms correspondingly, and the hollow roller is used for tensioning the coiled material. The two adjusting arms are provided with guide grooves in the direction from the upper ends to the lower ends, the height adjusting roller is arranged between the two guide grooves, the two telescopic pieces are arranged on the two adjusting arms respectively, and the telescopic ends of the telescopic pieces are connected with the height adjusting roller through the guide grooves and used for controlling the height adjusting roller to move along the guide grooves. When the winding and unwinding equipment is used for winding materials, the adjusting arm can automatically find a balance point due to the dead weight and the tension effect of the coiled materials.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabrics, and more particularly to an automatic tensioning reeling and unreeling device. Background Art

[0002] In the material processing industry, winding and unwinding equipment is widely used in the conveying, winding and storage of coils. Traditional winding and unwinding equipment maintains coil tension through mechanical tensioning devices (such as counterweights, springs or cylinders), but there are the following problems: 1. Dependence on manual adjustment: The tension needs to be adjusted manually according to the change in roll diameter or material characteristics, which is inefficient and prone to errors.

[0003] 2. Poor dynamic response: During the start-stop or speed change stage, the tension fluctuates greatly, causing the material to stretch, deform or break.

[0004] 3. Insufficient control accuracy: Unable to adapt to changes in roll diameter, material elasticity differences and external interference in real time, affecting product quality.

[0005] Although there are some electronically controlled tensioning solutions in the prior art, when producing products with insufficient strength or ultra-thin products, the winding process cannot be stably tensioned due to the disturbance of ambient air flow or the slight disturbance caused by the machine itself. Therefore, how to better tension the coil is the technical problem to be solved by this application. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention proposes an automatic tensioning rewinding and unwinding device, which adjusts the height of the height-adjusting roller and changes the tensioning capacity of the tensioning device through the lever principle.

[0007] The present invention provides an automatic tensioning rewinding and unwinding device, and the technical solution is as follows: The cam is a device for automatically tensioning and rewinding cloth, and the cam is used for guiding the cloth from the cloth guide roller to the main driving roller to form a new cloth roll. The cam is used for pushing the new cloth roll against the main driving roller, and the main driving roller is used for driving the new cloth roll to rotate. The cam is used for guiding the cloth from the cloth guide roller to the main driving roller to the main driving roller to drive ...

[0008] In summary, the above technical scheme has the following beneficial effects: when the coiling and unwinding equipment of the present application is coiling the material, the coil is wound around the hollow roller through the cloth guide roller. When the coil is conveyed, a horizontal pulling force is applied to the hollow roller. The adjusting arm connected to the hollow roller is rotatably connected to the tensioning frame. After being subjected to the horizontal pulling force, the adjusting arm will break the original vertical downward direction caused by its own weight and tilt at a certain angle. The adjusting arm and the vertical direction form an angle, thereby tensioning the coil. When the tension and relaxation force of the coil fluctuates due to external factors, the adjusting arm will automatically find a balance point due to its own weight and the tension of the coil. The setting of the height-adjusting roller can change the size of the force arm of the coil pulling the hollow roller. The closer the height-adjusting roller is to the hollow roller, the more difficult it is for the coil to pull the adjusting arm. The setting of the height-adjusting roller can adapt to coils of different thicknesses, so that the inclination angle of the adjusting arm can swing within a suitable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of a tensioning frame of an automatically tensioned winding and unwinding device; Figure 2 A schematic diagram of an adjustment arm of an automatically tensioned rewinding and unwinding device; Figure 3 A schematic diagram of controller connection for an automatic tensioning rewinding and unwinding device; Figure 4 The present invention is a schematic diagram of a height-adjusting roller of an automatically tensioned rewinding and unwinding device.

[0010] Figure numerals: 1. original cloth roll; 2. new cloth roll; 10. tensioning frame; 20. main driving roller; 30. winding roller; 40. tensioning device; 41. adjusting arm; 411. guide groove; 42. hollow roller; 43. telescopic member; 44. height-adjusting roller; 441. card-in port; 442. card-in column; 50. cloth guide roller; 51. cloth feed roller; 52. cloth outlet roller; 53. support roller; 54. steering roller; 60. limit block; 70. controller; 80. induction sheet; 90. counterweight ring; 91. column opening. DETAILED DESCRIPTION

[0011] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] An automatic tensioning rewinding and unwinding device, comprising a tensioning frame 10, on which a main driving roller 20, a winding roller 30, a tensioning device 40 and a plurality of cloth guide rollers 50 are arranged. The coil of the original cloth roll 1 extends to the main driving roller 20 through the cloth guide roller 50 to form a new cloth roll 2. The winding roller 30 is used to push the new cloth roll 2 against the main driving roller 20, and the main driving roller 20 is used to drive the new cloth roll 2 to rotate; the tensioning device 40 comprises an adjusting arm 41, a hollow roller 42, a telescopic member 43 and a height-adjusting roller 44. Two adjusting arms 41 are arranged, and are respectively located at On both sides of the tensioning frame 10, the upper ends of the adjusting arms 41 are rotatably connected to the tensioning frame 10; the two ends of the hollow roller 42 are respectively rotatably connected to the lower ends of the two adjusting arms 41 for tensioning the coiled material; the two adjusting arms 41 are respectively provided with guide grooves 411 in the direction from the upper end to the lower end, and the height adjustment roller 44 is arranged between the two guide grooves 411; two telescopic members 43 are provided and are respectively arranged on the two adjusting arms 41; the telescopic ends of the telescopic members 43 are connected to the height adjustment roller 44 through the guide grooves 411 for controlling the height adjustment roller 44 to move along the guide grooves 411.

[0013] When the coiling and unwinding device of the present application is coiling, the coil passes through the cloth guide roller 50 and is wound around the hollow roller 42. When the coil is conveyed, a horizontal pulling force is applied to the hollow roller 42. The adjusting arm 41 connected to the hollow roller 42 is connected to the tensioning frame 10 because it is rotationally connected. After being subjected to the horizontal pulling force, the adjusting arm 41 breaks the original vertical downward direction caused by its own weight and tilts at a certain angle. The adjusting arm 41 forms an angle with the vertical direction, thereby tensioning the coil. When the tension and relaxation force of the coil fluctuates due to external factors, the adjusting arm 41 will automatically find a balance point due to the deadweight and the tension of the coil. The setting of the height-adjusting roller 44 can change the size of the force arm of the coil pulling the hollow roller 42. The closer the height-adjusting roller 44 is to the hollow roller 42, the more difficult it is for the coil to pull the adjusting arm 41. The setting of the height-adjusting roller 44 can adapt to coils of different thicknesses, so that the inclination angle of the adjusting arm 41 can swing within a suitable range.

[0014] The cloth guide roller 50 includes a cloth feed roller 51, a cloth outlet roller 52, a support roller 53 and a steering roller 54; the cloth feed roller 51 is arranged on the side of the tensioning frame 10 close to the original cloth roll 1, and is used to guide the coiled material into the tensioning frame 10; the adjusting arm 41 is located on the side of the cloth feed roller 51 away from the original cloth roll 1; the cloth outlet roller 52 is located on the side of the adjusting arm 41 away from the original cloth roll 1, and is located above the hollow roller 42; the support roller 53 is located on the side of the adjusting arm 41 away from the original cloth roll 1, and is located below the hollow roller 42; the steering roller 54 is located between the support roller 53 and the main driving roller 20, and is used to adjust the direction in which the coiled material enters the main driving roller 20. The coiled material passes through the cloth feed roller 51, the cloth outlet roller 52, the hollow roller 42, the support roller 53 and the steering roller 54 in sequence and then enters the main driving roller 20 to form a new cloth roll 2.

[0015] The hollow roller 42 is located on the side of the cloth outlet roller 52 and the support roller 53 close to the original cloth roll 1 in the horizontal direction, and is located between the cloth outlet roller 52 and the support roller 53 in the vertical direction. The roll gives the hollow roller 42 a horizontal force, and the adjustment arm 41 is tilted by the force and gives the roll a pulling force in the opposite direction, so that the roll is kept taut during the transmission process. The axis of the original cloth roll is fixed at a position and is dragged to rotate around the axis. Two main drive rollers 20 are provided to support the new cloth roll 2.

[0016] A limit block 60 is disposed on the tensioning frame 10 , and the limit block 60 is detachably fixed to one side of the tilting direction of the adjusting arm 41 . When the adjusting arm 41 tilts and contacts the limit block 60 , the limit block 60 is used to limit the tilting angle of the adjusting arm 41 .

[0017] The tension of the coil is related to the thickness of the coil itself, the weight of the original cloth roll 1, etc. The greater the tension of the coil, the greater the inclination angle of the adjusting arm 41 and the vertical direction. After the new cloth roll 2 is divided, if the inclination angle of the adjusting arm 41 and the vertical direction is too large, the disturbance to the coil after the adjusting arm 41 swings back will also be greater. In order to avoid the disturbance caused by the swing back of the adjusting arm 41, it is better to control the angle between the adjusting arm 41 and the vertical direction within five degrees. By setting the limit block 60, it can be avoided that the inclination angle of the adjusting arm 41 exceeds the angle when the limit block 60 contacts the adjusting arm 41. The limited angle is changed by adjusting the distance between the limit block 60 and the adjusting arm 41. The limited angle can be artificially controlled within five degrees, ten degrees or other angles, and five degrees is preferred. The limit block 60 is fixed to a suitable position of the tensioning frame 10 by means of screws or clamps.

[0018] It also includes a controller 70. A sensor sheet 80 is provided on the side of the adjusting arm 41 close to the limit block 60. The sensor sheet 80, the telescopic member 43 and the main driving roller 20 are electrically connected to the controller 70 respectively. When the sensor sheet 80 and the limit block 60 are in contact, the controller 70 controls the telescopic member 43 to extend, so that the height-adjusting roller moves along the guide groove 411 in the direction close to the hollow roller 42.

[0019] The height adjustment roller 44 is initially located at the top of the guide groove 411. If the coil pulls the adjustment arm 41 to swing without touching the limit block 60, the controller 70 will not operate. When the controller 70 determines that the sensing sheet 80 is in contact with the limit block 60, the controller 70 controls the telescopic member 43 to extend. When the controller 70 determines that the sensing sheet 80 is not in contact with the limit block 60, the controller 70 controls the telescopic member 43 to stop extending. When the controller 70 determines that the main driving roller 20 stops rotating, the controller controls the telescopic member 43 to reset. Through the setting of the sensing sheet 80 and the limit block 60, the adjustment arm 41 can be used to tension the coil within a fixed swing angle. If the tension of the coil is too large, the sensing sheet 80 touches the limit block 60 after the height adjustment roller 44 is adjusted to the bottom, and the coil can also be tensioned, and the problem of the adjustment arm 41 rotating too much and rebounding violently is avoided. The telescopic member 43 is an accessory with telescopic function such as a cylinder, an electromagnet or a controllable telescopic rod. The telescopic member 43 includes a control end and a telescopic end. The control end is connected to the upper end of the adjustment arm 41 to control the telescopic end to extend and retract. The extension distance of the telescopic member 43 is controlled by the controller 70, and the extension length is within the range of the guide groove 411.

[0020] It also includes a counterweight ring 90, which is used to be detachably connected to the height adjustment roller 44. When the height adjustment roller 44 moves to the bottom of the guide groove 411, if the induction sheet 80 still conflicts with the limit block 60, it means that the counterweight of the height adjustment roller 44 itself is not enough. Although this can also achieve the effect of tensioning the coiled material, the induction sheet 80 on the adjustment arm 41 will be damaged if it conflicts with the limit block 60 for a long time. Therefore, it is best to let the adjustment arm 41 swing within the restricted angle. After the counterweight ring 90 is set on the height adjustment roller 44, the weight of the height adjustment roller 44 can be increased to adapt to a greater pulling force.

[0021] The height adjustment roller 44 is provided with an annular snap-in opening 441, thereby forming a snap-in column 442 on the height adjustment roller 44, and the weight ring 90 is provided with a column-penetrating opening 91, the width of which is greater than the diameter of the snap-in column 442 and less than the diameter of the height adjustment roller 44. The weight ring 90 is C-shaped, and the inner ring diameter of the weight ring 90 is equal to or greater than the diameter of the height adjustment roller 44. After the column-penetrating opening 91 of the weight ring 90 passes through the snap-in column 442, it moves to both sides of the height adjustment roller 44, and the width of the column-penetrating opening 91 is less than the diameter of the height adjustment roller 44 so that it will not fall off.

[0022] The height-adjusting roller 44 is provided with a chamfer at the entrance 441. The chamfer can allow the weight ring 90 to pass through the height-adjusting roller 44 better.

[0023] The height adjustment roller 44 is provided with an external thread, and the inner ring of the weight ring 90 is provided with an internal thread, and the weight ring 90 and the height adjustment roller 44 are connected by threads. In order to prevent the weight ring 90 from sliding or rotating during the shaking of the adjustment arm 41, the weight ring 90 passes through the clamping column 442 and is connected to the weight ring 90 along the thread, which plays a role in fixing the weight ring 90, thereby preventing the weight ring 90 from interfering with the coil.

[0024] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An automatic tensioning rewinding and unwinding device, characterized in that: The invention comprises a tensioning frame (10), on which a main driving roller (20), a winding roller (30), a tensioning device (40) and a plurality of cloth guide rollers (50) are arranged. The coil of the original cloth roll (1) extends to the main driving roller (20) through the cloth guide roller (50) to form a new cloth roll (2). The winding roller (30) is used to push the new cloth roll (2) against the main driving roller (20), and the main driving roller (20) is used to drive the new cloth roll (2) to rotate. The tensioning device (40) comprises an adjusting arm (41), a hollow roller (42), a telescopic member (43) and a height-adjusting roller (44); two adjusting arms (41) are provided and are respectively located on both sides of the tensioning frame (10); the upper end of the adjusting arm (41) is rotatably connected to the tensioning frame (10); The two ends of the hollow roller (42) are rotatably connected to the lower ends of the two adjustment arms (41) respectively, and are used for tensioning the coiled material; The two adjusting arms (41) are respectively provided with guide grooves (411) in a direction from the upper end to the lower end; the height adjustment roller (44) is arranged between the two guide grooves (411); two telescopic members (43) are provided and are respectively arranged on the two adjusting arms (41); the telescopic ends of the telescopic members (43) are connected to the height adjustment roller (44) through the guide groove (411) and are used to control the height adjustment roller (44) to move along the guide groove (411).

2. The automatic tensioning rewinding and unwinding device according to claim 1, characterized in that: The cloth guide roller (50) comprises a cloth feed roller (51), a cloth discharge roller (52), a support roller (53) and a steering roller (54); The cloth feeding roller (51) is arranged on a side of the tensioning frame (10) close to the original cloth roll (1) and is used to guide the roll into the tensioning frame (10); The adjusting arm (41) is located on a side of the cloth feeding roller (51) away from the original cloth roll (1); The cloth outlet roller (52) is located on a side of the adjusting arm (41) away from the original cloth roll (1) and is located above the hollow roller (42); The support roller (53) is located on a side of the adjusting arm (41) away from the original cloth roll (1) and below the hollow roller (42); The steering roller (54) is located between the supporting roller (53) and the main driving roller (20) and is used to adjust the direction in which the coiled material enters the main driving roller (20). The coiled material passes through the cloth feed roller (51), the cloth outlet roller (52), the hollow roller (42), the supporting roller (53) and the steering roller (54) in sequence and then enters the main driving roller (20) to form a new cloth roll (2).

3. The automatic tensioning rewinding and unwinding device according to claim 1, characterized in that: A limit block (60) is provided on the tensioning frame (10), and the limit block (60) is detachably fixed on one side of the tilting direction of the adjustment arm (41); when the adjustment arm (41) tilts and contacts the limit block (60), the limit block (60) is used to limit the tilting angle of the adjustment arm (41).

4. The automatic tensioning rewinding and unwinding device according to claim 3, characterized in that: The invention also comprises a controller (70). A sensing sheet (80) is arranged on one side of the adjusting arm (41) close to the limit block (60). The sensing sheet (80), the telescopic member (43) and the main driving roller (20) are respectively electrically connected to the controller (70). When the sensing sheet (80) and the limit block (60) are in contact, the controller (70) controls the telescopic member (43) to extend, so that the height-adjusting roller moves along the guide groove (411) in a direction close to the hollow roller (42).

5. The automatic tensioning rewinding and unwinding device according to claim 1, characterized in that: It also includes a weight ring (90), and the weight ring (90) is used for being detachably connected to the height adjustment roller (44).

6. The automatic tensioning rewinding and unwinding device according to claim 5, characterized in that: The height adjustment roller (44) is provided with an annular snap-in opening (441), thereby forming a snap-in column (442) on the height adjustment roller (44); the counterweight ring (90) is provided with a column penetration opening (91), and the width of the column penetration opening (91) is greater than the diameter of the snap-in column (442) and smaller than the diameter of the height adjustment roller (44).

7. The automatic tensioning rewinding and unwinding device according to claim 6, characterized in that: The height-adjusting roller (44) is provided with a chamfer at the clamping inlet (441).

8. The automatic tensioning rewinding and unwinding device according to claim 6, characterized in that: The height adjustment roller (44) is provided with an external thread, the inner ring of the counterweight ring (90) is provided with an internal thread, and the counterweight ring (90) and the height adjustment roller (44) are connected via threads.

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