A roll material unwinding apparatus

Abstract

The application discloses a roll material unwinding device, the roll material is fixed on a roll material shaft through a tensioning structure, the roll material unwinding device comprises a bracket device, the bracket device comprises a first bracket and a second bracket; a fixing device is used for fixing a first end of the roll material shaft; a first conveying device comprises a first conveying mechanism and a first lifting mechanism; in a first position, the first conveying mechanism is located below the roll material, so that the first bracket can support the first end of the roll material shaft, the second bracket can support a second end of the roll material shaft, and the fixing device fixes the first end of the roll material shaft when the tensioning structure is released to release the tensioning force between the roll material shaft and the roll material; in a second position, the first conveying mechanism is in contact with the roll material, so that the first conveying mechanism can convey the roll material to make the roll material unwind from the roll material shaft after the support of the second bracket on the second end of the roll material shaft is released. The roll material unwinding device improves production efficiency and reduces manual labor intensity.

Description

Technical Field

[0001] This application relates to the technical field of fiberglass chopped strand mat production equipment, and in particular to a roll unwinding device. Background Technology

[0002] Fiberglass chopped strand mat is made by bonding short strands of fiberglass yarn. It is widely used in military facilities, aerospace, wind power generation, chemical engineering, oil pipeline transportation, automobile manufacturing, electrical appliances, and sanitary ware industries. In the winding process of chopped strand mat production, the wound mat roll needs to be removed from the roll reel, and then a new paper tube is fitted onto the reel. Currently, the unwinding process is mainly done manually. Due to the large weight of the mat rolls, this unwinding process is labor-intensive and wastes labor costs. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a roll unwinding device that can automatically unwind rolls, thereby improving production efficiency and reducing manual labor intensity.

[0004] This application provides a roll unwinding device, wherein the roll is fixed on a roll shaft by a tensioning structure, and the roll unwinding device includes:

[0005] A bracket assembly, the bracket assembly comprising a first bracket and a second bracket;

[0006] A fixing device is disposed on the side of the first bracket away from the second bracket, and the fixing device is used to fix the first end of the roll shaft;

[0007] A first conveying device is disposed between the first bracket and the second bracket. The first conveying device includes a first conveying mechanism and a first lifting mechanism. The first lifting mechanism is connected to the first conveying mechanism and is used to drive the first conveying mechanism to reciprocate between a first position and a second position in a vertical direction.

[0008] In the first position, the first conveying mechanism is located below the roll material so that when the tensioning structure is released to relieve the tension between the roll shaft and the roll material, the first bracket can support the first end of the roll shaft, the second bracket can support the second end of the roll shaft, and the fixing device fixes the first end of the roll shaft.

[0009] In the second position, the first conveying mechanism contacts the roll material so that after the second bracket releases its support on the second end of the roll shaft, the first conveying mechanism can convey the roll material so that the roll material is unwound from the roll shaft.

[0010] In some embodiments of this application, the first bracket includes:

[0011] Support block;

[0012] A first support frame is disposed on the support block, and the first support frame is rotatably connected to the support block;

[0013] The bracket device further includes a first driving mechanism, which is fixedly connected to the support block and is used to drive the support block to move in a horizontal direction perpendicular to the axis of the roll shaft, so as to push the support block to move after the roll is unwound, thereby causing the roll shaft located on the first support frame to move in a circular motion around the fixed device, so as to fit the mandrel on the roll shaft.

[0014] In some embodiments of this application, the first bracket further includes a distance sensor for sensing the moving distance of the support block to control the rotation angle of the roll shaft.

[0015] In some embodiments of this application, the second bracket includes a second support frame and a second lifting mechanism, wherein the second lifting mechanism is connected to the second support frame and is used to drive the second support frame to move in a vertical direction;

[0016] When the first conveying mechanism is in the first position, the second support frame can support the second end of the roll shaft;

[0017] When the first conveying mechanism is in the second position, the second lifting mechanism drives the second support frame to move downward, so that the top surface of the second support frame is lower than the top surface of the first conveying mechanism, thereby releasing the support of the second support frame on the second end of the roll shaft.

[0018] In some embodiments of this application, the roll shaft is provided with a cavity, and the roll shaft is provided with a plurality of grooves communicating with the cavity in its circumferential direction. The tensioning structure includes:

[0019] An elastic element, one end of which is connected to the roll shaft;

[0020] A tensioning block is disposed in the groove and connected to the other end of the elastic element;

[0021] An inflation assembly, wherein the inflation assembly is connected to a first end of the roll shaft;

[0022] When the inflation assembly introduces gas into the cavity, the tensioning block is pushed out of the groove and abuts against the surface of the mandrel of the roll material to achieve tensioning of the roll material; when the inflation assembly stops introducing gas into the cavity, the tensioning block is reset under the action of the elastic element to release the tension force between the roll shaft and the roll material.

[0023] In some embodiments of this application, the fixing device includes a clamping ring and a second driving mechanism, the second driving mechanism driving the clamping ring to open or close, so as to clamp or release the roll shaft.

[0024] In some embodiments of this application, the unwinding device further includes a core-sleeving device located at the end of the first conveying device away from the fixing device. The core-sleeving device includes at least one gripper for gripping the mandrel and sleeved the mandrel onto the roll shaft.

[0025] In some embodiments of this application, the unwinding device further includes a second conveying device located at the end of the first conveying device away from the fixing device, and the second conveying device is used to convey the roll material conveyed by the first conveying device to the next process.

[0026] In some embodiments of this application, the unwinding device further includes a hoisting device for removing the roll connected to the roll shaft from the winding equipment and moving the roll connected to the roll shaft onto the bracket device.

[0027] In some embodiments of this application, the unwinding device further includes a controller, and the fixing device, the hoisting device, and the controller are all electrically connected.

[0028] The technical solution provided in this application may include the following beneficial effects:

[0029] This application uses a first bracket, a second bracket, and a fixing device to support and fix the rolled material; the second bracket and the fixing device fix the roll shaft; and the first conveying device can unwind the rolled material from the roll shaft, thereby improving production efficiency and reducing manual labor intensity.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] Figure 1This is a schematic diagram of a roll unwinding device according to an exemplary embodiment.

[0033] Figure 2 This is a schematic diagram illustrating the operation of placing a roll of material onto a first conveying device according to an exemplary embodiment.

[0034] Figure 3 This is a schematic diagram illustrating the unwinding operation of a coil according to an exemplary embodiment.

[0035] Figure 4 This is a schematic diagram of the structure of a fixing device at an angle according to an exemplary embodiment.

[0036] Figure 5 This is a structural schematic diagram of the fixing device from another angle, according to an exemplary embodiment.

[0037] Figure 6 This is a schematic diagram illustrating the first bracket angle offset and the movement of the sleeve core according to an exemplary embodiment.

[0038] Figure 7 This is a schematic diagram illustrating the operation of unwinding a roll of material to a second conveying device according to an exemplary embodiment.

[0039] Figure 8 This is a schematic diagram illustrating the operation of conveying rolled material according to an exemplary embodiment.

[0040] Figure 9 This is a schematic diagram illustrating the operation of a lifting device preparing to lift a mandrel and a coil shaft according to an exemplary embodiment.

[0041] Figure 10 This is a schematic diagram illustrating the action of a lifting device lifting a mandrel and a coil shaft according to an exemplary embodiment.

[0042] Figure Labels

[0043] 1. Coil material; 11. Mandrel; 2. Coil shaft; 3. Tensioning structure; 31. Tensioning block; 32. Inflatable assembly; 321. Inflatable connector; 322. Air pipe; 4. Bracket device; 41. First bracket; 411. Support block; 412. First support frame; 42. Second bracket; 421. Second support frame; 422. Second lifting mechanism; 43. First drive mechanism; 44. Frame; 45. Slider; 5. Fixing device; 51. Clamping ring; 52. Second drive mechanism; 6. First conveying device; 61. First conveying mechanism; 62. First lifting mechanism; 63. First servo motor; 7. Core-setting device; 8. Second conveying device; 81. Second servo motor; 82. Roller conveyor; 9. Lifting device;

[0044] 10. First position; 20. Second position. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0046] When using a rolling equipment, a mandrel (e.g., a paper tube) is fitted onto a roll shaft, and a tensioning structure secures the mandrel to the roll shaft. Then, fabric (e.g., felt) is wound onto the mandrel to form a roll (e.g., a felt roll). During unwinding, the roll, along with the mandrel, is removed from the roll shaft, and a new mandrel is then fitted onto the roll shaft. Currently, all of the above work is done manually, resulting in high labor intensity and wasted labor costs.

[0047] Based on this, this application provides a roll unwinding device, which includes a bracket device, a fixing device, and a first conveying device. The bracket device includes a first bracket and a second bracket. The fixing device is disposed on the side of the first bracket away from the second bracket and is used to fix the first end of the roll shaft. The first conveying device is disposed between the first bracket and the second bracket and includes a first conveying mechanism and a first lifting mechanism. The first lifting mechanism is connected to the first conveying mechanism and is used to drive the first conveying mechanism to reciprocate between a first position and a second position in the vertical direction. In the first position, the first conveying mechanism is located below the roll, so that when the tensioning structure is released to relieve the tension force between the roll shaft and the roll, the first bracket can support the first end of the roll shaft, the second bracket can support the second end of the roll shaft, and the fixing device fixes the first end of the roll shaft. In the second position, the first conveying mechanism is in contact with the roll, so that after the second bracket releases the support of the second end of the roll shaft, the first conveying mechanism can convey the roll so that the roll is unwound from the roll shaft. This application utilizes a roll unwinding device to unwind rolls, thereby improving production efficiency and reducing manual labor intensity.

[0048] The specific embodiments described below are intended to help those skilled in the art understand this embodiment, but this embodiment is not limited to the specific embodiments described below.

[0049] like Figures 1-3As shown, an exemplary embodiment of this application provides a roll unwinding device. The roll 1 is fixed to the roll shaft 2 by a tensioning structure 3. The roll unwinding device includes a bracket device 4, a fixing device 5, and a first conveying device 6. The bracket device 4 includes a first bracket 41 and a second bracket 42. The fixing device 5 is disposed on the side of the first bracket 41 opposite to the second bracket 42, and is used to fix the first end of the roll shaft 2. The first conveying device 6 is disposed between the first bracket 41 and the second bracket 42. The first conveying device 6 includes a first conveying mechanism 61 and a first lifting mechanism 62. The first lifting mechanism 62 is connected to the first conveying mechanism 61 and is used to drive the first conveying mechanism 61 to reciprocate between a first position 10 and a second position 20 in a vertical direction. Figure 2 As shown, in the first position 10, the first conveying mechanism 61 is located below the coil 1, so that when the tensioning structure 3 is released to relieve the tension between the coil shaft 2 and the coil 1, the first bracket 41 can support the first end of the coil shaft 2, the second bracket 42 can support the second end of the coil shaft 2, and the fixing device 5 fixes the first end of the coil shaft 2; as shown Figure 3 As shown, at the second position 20, the first conveying mechanism 61 contacts the roll 1 so that after the second bracket 42 releases the support of the second end of the roll shaft 2, the first conveying mechanism 61 can convey the roll 1 so that the roll 1 is unwound from the roll shaft 2.

[0050] In this embodiment, at the first position 10, the tensioning structure 3 releases the tension between the roll shaft 2 and the roll 1, and supports the first end of the roll shaft 2 through the first bracket 41 and the second end of the roll shaft 2 through the second bracket 42, so as to support the roll 1 located on the roll shaft 2; at the second position 20, the second bracket 42 releases the support on the second end of the roll shaft 2, making room for the conveying of the roll 1, and drives the first conveying mechanism 61 to move in a vertically upward direction through the first lifting mechanism 62, so that the first conveying mechanism 61 contacts the roll 1, and conveys the roll 1 through the first conveying mechanism 61 so that the roll 1 is unwound from the roll shaft 2.

[0051] Among them, such as Figure 1 As shown, the bracket device 4 also includes a frame 44, with the first bracket 41 and the fixing device 5 spaced apart on the frame 44. In this embodiment, the first lifting mechanism 62 can be a lifting cylinder, and two lifting cylinders can be configured, respectively located at both ends of the first conveying mechanism 61, to improve the stability of the movement of the first conveying mechanism 61; the first conveying device 6 can be a belt conveyor, with the belt conveyor using a first servo motor 63 as the power output to drive the belt to rotate.

[0052] In one embodiment, such as Figure 1 and Figure 2As shown, the first bracket 41 includes a support block 411 and a first support frame 412 disposed on the support block 411. The first support frame 412 is rotatably connected to the support block 411. The bracket device 4 also includes a first drive mechanism 43, which is fixedly connected to the support block 411 and is used to drive the support block 411 to move in a horizontal direction perpendicular to the axis of the roll shaft 2, so as to push the support block 411 to move after the roll 1 is unwound, thereby driving the roll shaft 2 located on the first support frame 412 to make circumferential motion around the fixing device 5, so as to fit the mandrel 11 on the roll shaft 2.

[0053] In this embodiment, after the roll 1 is unwound, the first end of the roll shaft 2 is still supported by the first bracket 41 and fixed by the fixing device 5. In order to facilitate the new mandrel 11 being sleeved on the roll shaft 2, the first drive mechanism 43 drives the support block 411 to move in a horizontal direction perpendicular to the axis of the roll shaft 2. Since the first support frame 412 is rotatably connected to the support block 411 and the first end of the roll shaft 2 is fixed to the fixing device 5, when the support block 411 moves in a horizontal direction perpendicular to the axis of the roll shaft 2, the roll shaft 2 rotates only in the horizontal direction with the fixing device 5 as the fulcrum, so as to form a cantilever beam support action state.

[0054] The first bracket 41 is a split structure, with a support block 411 mounted on the frame 44 and a first support frame 412 located above the support block 411. The first support frame 412 and the support block 411 are rotatably connected via a shaft and bearings. The bracket device 4 also includes a slider 45 mounted on the frame 44. The support block 411 is fixedly connected to the slider 45, with one end of the slider 45 fixedly connected to the support block 411 and the other end fixedly connected to the first drive mechanism 43. The first drive mechanism 43 drives the slider 45 to move the support block 411. Furthermore, the first support frame 412 has an upward-opening U-shaped opening with a width equal to the diameter of the end of the roll shaft 2, ensuring accurate positioning.

[0055] The roll spool 2 can be offset by 10°-20° relative to its original axis. The first drive mechanism 43 can be a drive cylinder. By controlling the stroke of the drive cylinder and the distance between the drive cylinder and the fixing device 5, the offset angle of the roll spool 2 can be controlled. For example, if the stroke of the drive cylinder is set to 80mm and the distance between the drive cylinder and the fixing device 5 is set to 284mm, then the roll spool 2 can be offset by 15° in its original axis direction.

[0056] In one embodiment, the first bracket 41 further includes a distance sensor for sensing the movement distance of the support block 411 to control the rotation angle of the roll 2.

[0057] In this embodiment, the distance sensor can be a photoelectric sensor. A photoelectric sensor is a sensor based on the photoelectric effect. When it is irradiated by visible light, it will generate a photoelectric effect, convert the light signal into an electrical signal and output it. By setting two photoelectric sensors and placing them on the cylinder wall of the driving cylinder, the distance between the two photoelectric sensors is used as the stroke control.

[0058] In one embodiment, the second bracket 42 includes a second support frame 421 and a second lifting mechanism 422. The second lifting mechanism 422 is connected to the second support frame 421 and is used to drive the second support frame 421 to move in the vertical direction. When the first conveying mechanism 61 is in the first position 10, the second support frame 421 can support the second end of the roll shaft 2. When the first conveying mechanism 61 is in the second position 20, the second lifting mechanism 422 drives the second support frame 421 to move downward, so that the top surface of the second support frame 421 is lower than the top surface of the first conveying mechanism 61, so as to release the support of the second support frame 421 on the second end of the roll shaft 2.

[0059] In this embodiment, the second lifting mechanism 422 enables the lifting of the second support frame 421. When the first conveying mechanism 61 is in the first position 10, the second support frame 421 supports the second end of the roll 2. When the first conveying mechanism 61 is in the second position 20, the second lifting mechanism 422 drives the second support frame 421 to move downward, so that the top surface of the second support frame 421 is lower than the top surface of the first conveying mechanism 61, thus making way for the conveying of the roll 1, allowing the roll 1 to be output from the end of the first conveying mechanism 61 near the second support frame 421. The second support frame 421 also has an upward-opening U-shaped opening, the width of which is the same as the diameter of the end of the roll 2, ensuring accurate positioning. The second lifting mechanism 422 can be a lifting cylinder.

[0060] In one embodiment, such as Figure 1 As shown, the roll spool 2 is provided with a cavity, and multiple grooves connected to the cavity are arranged circumferentially on the roll spool 2. The tensioning structure 3 includes an elastic element, a tensioning block 31, and an inflation assembly 32. One end of the elastic element is connected to the roll spool 2; the tensioning block 31 is disposed in the groove and is connected to the other end of the elastic element; the inflation assembly 32 is connected to the first end of the roll spool 2; when the inflation assembly 32 introduces gas into the cavity, the tensioning block 31 is pushed out of the groove and abuts against the surface of the mandrel 11 of the roll 1 to achieve tensioning of the roll 1; when the inflation assembly 32 stops introducing gas into the cavity, the tensioning block 31 is reset under the action of the elastic element to release the tension force between the roll spool 2 and the roll 1.

[0061] In this embodiment, the gas introduced into the cavity by the inflation assembly 32 can be, for example, compressed air. The inflation assembly 32 includes an inflation connector 321 and an air pipe 322. The inflation assembly 32 is moved to the first end of the roll spool 2 via a sliding device (e.g., a linear bearing conveyor) and connected to the first end of the roll spool 2. Compressed air is introduced into the cavity through the inflation assembly 32. Under the action of the gas pressure, the tensioning block 31 is pushed out of the groove and abuts against the surface of the mandrel 11 of the roll 1 to achieve tensioning of the roll 1. At this time, the elastic element is compressed. After the compressed air is released, the tensioning block 31 is reset under the action of the elastic element to release the tension between the roll spool 2 and the roll 1. The elastic element can be, for example, a spring.

[0062] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, the fixing device 5 includes a clamping ring 51 and a second driving mechanism 52. The second driving mechanism 52 drives the clamping ring 51 to open or close, so as to clamp or release the coil shaft 2.

[0063] In this embodiment, the clamping ring 51 consists of two approximately semi-circular structures. The opening and closing of the clamping ring 51 is controlled by the second driving mechanism 52 and a solenoid valve to clamp or release the coil spool 2. The distance between the two semi-circular structures when open is sufficient to allow the end of the coil spool 2 to be inserted. The second driving mechanism 52 can be, for example, a rotary cylinder, which causes the two semi-circular structures to move in opposite directions to open the clamping ring 51. The signal control point for opening can be a photoelectric sensor.

[0064] In one embodiment, such as Figure 1 and Figure 6 As shown, the unwinding equipment also includes a core-sleeving device 7, which is located at the end of the first conveying device 6 away from the fixing device 5. The core-sleeving device 7 includes at least one gripper for gripping the mandrel 11 and sleeves the mandrel 11 on the roll shaft 2.

[0065] In this embodiment, the mandrel 11 can be gripped and fitted onto the coil shaft 2 by at least one gripper of the core-feeding device 7. The number of grippers is not limited and can be one, two, etc. For example, Figure 1The number of grippers is set to two. The mandrel 11 can be provided by a feeding mechanism (not shown in the figure; the feeding mechanism can also be manually operated). The feeding mechanism is located on one side of the first conveying device 6 and includes a hopper, a rack, and a chain. Limit plates are installed on both sides of the hopper, and the width between the two limit plates is adjusted by a motor. Multiple mandrels 11 are placed in the hopper of the feeding mechanism, and the hopper is conveyed to the rack via the chain. The grippers are driven by a drive mechanism, and the position of the grippers is detected by a position sensor. The drive mechanism, the first drive mechanism 43, and the position sensor are all electrically connected to the controller. When the position sensor detects the position of the gripper and moves the mandrel 11 on the gripper to the designated position, the controller controls the first drive mechanism 43 to operate, causing the roll 2 to rotate around the fixing device 5. The drive mechanism then drives the gripper to move, moving the mandrel 11 onto the roll 2.

[0066] In one embodiment, such as Figure 3 and Figure 7 As shown, the unwinding equipment also includes a second conveying device 8, which is located at the end of the first conveying device 6 away from the fixing device 5. The second conveying device 8 is used to convey the roll 1 conveyed by the first conveying device 6 to the next process.

[0067] In this embodiment, the second conveying device 8 can transport the unwound roll 1 from the first conveying device 6 to the next process, reducing the intensity of manual labor. The second conveying device 8 can be a roller conveyor belt, with a second servo motor 81 as the power output to drive multiple roller conveyors 82 to rotate.

[0068] In one embodiment, such as Figure 8 As shown, the unwinding equipment also includes a hoisting device 9, which is used to remove the coil 1 connected to the coil shaft 2 from the winding equipment and move the coil 1 connected to the coil shaft 2 onto the bracket device 4.

[0069] In this embodiment, the lifting device 9 can be mounted on both ends of the coil spool 2 to remove the coil spool 2 and the coil 1 from the winding equipment and move them downwards to the bracket device 4, reducing the intensity of manual labor. The lifting device 9 can consist of a hook and a drive mechanism that drives the hook. The descent signal of the hook sends an opening signal to the clamp 51, ensuring that the clamp 51 is in an open state when the hook moves the coil spool 2 to the bracket device 4, thus securing the first end of the coil spool 2. In this embodiment, the number of hooks is not limited and can be one, two, etc. For example, Figure 1 The number of hooks is set to two.

[0070] like Figure 9 and Figure 10As shown, after unwinding is completed, the hoisting device 9 can also be used to lift the coil shaft 2 with the new mandrel 11 on it from the bracket device 4 and move it to the coiling equipment.

[0071] In one embodiment, the unwinding device further includes a controller, and the fixing device 5 and the hoisting device 9 are electrically connected to the controller.

[0072] In this embodiment, after the hoisting device 9 hoists the roll spool 2 and the roll 1 to the bracket device 4, the controller controls the fixing device 5 to start, so as to fix the roll spool 2 and improve the automation level of the equipment.

[0073] An exemplary embodiment of this application provides the working process of a roll unwinding device:

[0074] The hoisting device 9 lifts both ends of the roll 2, removing the roll 2 and the coil 1 from the winding equipment and moving them above the bracket device 4. The second drive mechanism 52 drives the clamping ring 51 to open. At this time, the first bracket 41, the second bracket 42, and the open end of the clamping ring 51 are all on the same axis; the first conveying mechanism 61 is in the first position 10. The hoisting device 9 hoists the roll 2 and the coil 1 onto the first bracket 41 and the second bracket 42, while the first end of the roll 2 is placed in the clamping ring 51. The second drive mechanism 52 drives the clamping ring 51 to close, and the hoisting device 9 returns to the waiting position. The inflation assembly 32 stops supplying compressed air to the roll 2, and the tensioning block 31 resets under the action of the elastic element to release the tension between the roll 2 and the coil 1. The second lifting mechanism 422 drives the second support frame 421 to move downward, at which time the roll 2 is supported by the clamping ring 51 and the first bracket 41. The first lifting mechanism 62 drives the first conveying mechanism 61 to move upward to the second position 20, so that the first conveying mechanism 61 contacts the coil 1. The first conveying mechanism 61 moves away from the first bracket 41 to unwind the coil 1 together with the mandrel 11 from the coil shaft 2. The second conveying device 8 continues to convey the coil 1 conveyed by the first conveying mechanism 61 to the next process.

[0075] After the coil 1 is unwound from the coil shaft 2, the gripper picks up the new mandrel 11 and places it in the designated position. The first drive mechanism 43 drives the support block 411 to move in a horizontal direction perpendicular to the axis of the coil shaft 2, causing the coil shaft 2 to rotate around the retainer 51, thereby achieving an angular offset of the coil shaft 2. At this time, the axis of the coil shaft 2 coincides with the axis of the mandrel 11 located on the gripper, and the gripper places the mandrel 11 onto the coil shaft 2 to complete the mandrel 11 placement action. At this time, the first drive mechanism 43 drives the support block 411 to reset, causing the coil shaft 2 to return to its initial position. The first lifting mechanism 62 drives the first conveying mechanism 61 to move downward to the first position 10, and the second lifting mechanism 422 drives the second support frame 421 to move upward, supporting the second end of the coil shaft 2 through the second support frame 421. The inflation assembly 32 is inserted into the first end of the roll 2 and compressed air is introduced into the cavity of the roll 2, causing the tensioning block 31 to be pushed out of the groove and abut against the mandrel 11 to achieve tensioning of the mandrel 11. The hoisting device 9 lifts both ends of the roll 2, lifts the roll 2 and the mandrel 11 away, and moves them to the winding equipment.

[0076] In summary, the unwinding equipment of this application can automatically unwind the roll 1 from the roll shaft 2, and automatically attach the paper tube to the roll shaft 2 by angularly offsetting the roll shaft 2. This reduces the labor intensity of workers, improves the automation level of the production line, and increases production efficiency.

[0077] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0078] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A coil unwinding device, characterized in that, The coil is fixed to the coil shaft by a tensioning structure, and the coil unwinding device includes: A bracket assembly, wherein the bracket includes a first bracket and a second bracket; A fixing device is disposed on the side of the first bracket away from the second bracket, and the fixing device is used to fix the first end of the roll shaft; A first conveying device is disposed between the first bracket and the second bracket. The first conveying device includes a first conveying mechanism and a first lifting mechanism. The first lifting mechanism is connected to the first conveying mechanism and is used to drive the first conveying mechanism to reciprocate between a first position and a second position in a vertical direction. In the first position, the first conveying mechanism is located below the roll material so that when the tensioning structure is released to relieve the tension between the roll shaft and the roll material, the first bracket can support the first end of the roll shaft, the second bracket can support the second end of the roll shaft, and the fixing device fixes the first end of the roll shaft. In the second position, the first conveying mechanism contacts the roll material so that after the second bracket releases its support from the second end of the roll spool, the first conveying mechanism can convey the roll material to unwind it from the roll spool; the first bracket includes: Support block; A first support frame is disposed on the support block, and the first support frame is rotatably connected to the support block; The bracket device further includes a first driving mechanism, which is fixedly connected to the support block and is used to drive the support block to move in a horizontal direction perpendicular to the axis of the roll shaft, so as to push the support block to move after the roll is unwound, thereby causing the roll shaft located on the first support frame to move in a circular motion around the fixed device, so as to fit the mandrel on the roll shaft.

2. The unwinding equipment for coiled material according to claim 1, characterized in that, The first bracket also includes a distance sensor, which is used to sense the moving distance of the support block in order to control the rotation angle of the roll shaft.

3. The unwinding equipment according to claim 1, characterized in that, The second bracket includes a second support frame and a second lifting mechanism. The second lifting mechanism is connected to the second support frame and is used to drive the second support frame to move in the vertical direction. When the first conveying mechanism is in the first position, the second support frame can support the second end of the roll shaft; When the first conveying mechanism is in the second position, the second lifting mechanism drives the second support frame to move downward, so that the top surface of the second support frame is lower than the top surface of the first conveying mechanism, thereby releasing the support of the second support frame on the second end of the roll shaft.

4. The unwinding equipment according to claim 1, characterized in that, The roll shaft is provided with a cavity, and the roll shaft is provided with a plurality of grooves communicating with the cavity in its circumferential direction. The tensioning structure includes: An elastic element, one end of which is connected to the roll shaft; A tensioning block is disposed in the groove and connected to the other end of the elastic element; An inflation assembly, wherein the inflation assembly is connected to a first end of the roll shaft; When the inflation assembly introduces gas into the cavity, the tensioning block is pushed out of the groove and abuts against the surface of the mandrel of the roll material to achieve tensioning of the roll material; when the inflation assembly stops introducing gas into the cavity, the tensioning block is reset under the action of the elastic element to release the tension force between the roll shaft and the roll material.

5. The unwinding equipment according to claim 1, characterized in that, The fixing device includes a clamping ring and a second driving mechanism. The second driving mechanism drives the clamping ring to open or close, thereby clamping or releasing the roll shaft.

6. The unwinding equipment according to claim 1, characterized in that, The unwinding device further includes a core-sleeving device located at the end of the first conveying device away from the fixing device. The core-sleeving device includes at least one gripper for gripping the mandrel and sleeved the mandrel onto the roll shaft.

7. The unwinding equipment for coiled material according to claim 1, characterized in that, The unwinding equipment also includes a second conveying device, which is located at the end of the first conveying device away from the fixing device. The second conveying device is used to convey the roll material conveyed by the first conveying device to the next process.

8. The unwinding equipment according to claim 1, characterized in that, The unwinding equipment also includes a hoisting device, which is used to remove the roll connected to the roll shaft from the winding equipment and move the roll connected to the roll shaft onto the bracket device.

9. The unwinding equipment according to claim 8, characterized in that, The unwinding equipment also includes a controller, and the fixing device, the hoisting device and the controller are all electrically connected.

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