Automatic tapeless roll-up device

Abstract

The utility model relates to sheet material winding technical field, and disclose a kind of automatic roll-up device without adhesive tape, including base, base top is slidably connected with rack by slide rail, rack one side is equipped with package roll component, and package roll component is used to package sheet material on paper core outside side;Package roll component one side is equipped with cutting assembly, and cutting assembly is used to cut sheet material after roll-up;Package roll component includes second gear and second motor, second gear one side is equipped with second limit slot, and air expansion shaft is placed in second limit slot inboard, and air expansion shaft outboard is sleeved with paper core;Second motor output shaft end is fixed with second sprocket, pneumatic motor starts to work, and pneumatic motor output shaft drives rubber roller to rotate, and the friction between rubber roller and sheet material drives paper core to rotate, after roll-up, the open loop end of sheet material is naturally pressed into the roll material gap formed between paper core and already wound sheet material, and the stable closed loop winding structure is formed, realizes automatic roll-up without adhesive tape, reduces manual operation, and reduces labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of sheet winding technology, specifically to an automatic unwinding device without adhesive tape. Background Technology

[0002] Sheets are flowable molding materials made primarily of resin, along with auxiliary materials such as plasticizers and fillers. Plastic sheets are processed through extrusion or calendering to form rolls with a thickness of 0.25-1.00 mm.

[0003] Existing unwinding methods mostly rely on manual operation or the use of tape to assist unwinding. When unwinding manually, workers need to manually wrap one end of the sheet around the paper core and form a certain shape for subsequent winding. This is not only labor-intensive but also inefficient. Therefore, an automatic unwinding device without tape is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic roll-up device without adhesive tape to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic roll-up device without adhesive tape, comprising a base, a frame slidably connected to the top of the base via a slide rail, and a wrapping assembly provided on one side of the frame, the wrapping assembly being used to wrap the sheet around the outside of the paper core; The wrapping assembly is provided with a cutting assembly on one side, which is used to cut the rolled sheet. The wrapping assembly includes a second gear and a second motor. A second limiting groove is provided on one side of the second gear. An air expansion shaft is placed inside the second limiting groove, and a paper core is sleeved on the outside of the air expansion shaft. The output shaft of the second motor is fixed with a second sprocket, and the second sprocket is connected to a first sprocket via a chain. A rotating shaft is fixed at the center of one end of the first sprocket, and a first gear is fixed at one end of the rotating shaft. A pneumatic motor is fixed to one side of the second gear, and a rubber roller is fixed to the output shaft end of the pneumatic motor.

[0006] Preferably, the second motor is fixed inside the frame, a tensioning wheel connected to one side of the chain is installed on one side of the frame, and the rotating shaft is rotatably connected to one side of the frame.

[0007] Preferably, the first gear and the second gear are meshed together, and a groove is provided on the inner side of the frame. The second gear is slidably connected to the inner side of the groove via an annular slide rail. There are two second gears, and a fixing rod is fixed between the two second gears.

[0008] Preferably, a first limiting groove is provided on one side of the frame, and a first rotating roller and a second rotating roller are rotatably connected between the frames via a bracket.

[0009] Preferably, the cutting assembly includes a housing, with a plurality of guide rods fixed to the inner wall of the housing, a first motor fixed to one side of the housing, a lead screw fixed to the output shaft end of the first motor, and one end of the lead screw being rotatably connected to the inner side of the housing via a bearing seat.

[0010] Preferably, the lead screw is threaded to a sliding plate, which is slidably connected to the outside of the guide rod via a linear bearing.

[0011] Preferably, a blade holder is fixed to the top of the slide plate, a pressure plate is bolted to one side of the blade holder, a blade is held between the blade holder and the pressure plate, and the housing is fixed to one side of the frame.

[0012] Preferably, a cylinder is fixed to the inner wall of the base, the cylinder push rod end is fixed to one side of the bottom of the frame, and a connecting rod is fixed between the frames.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects: During the sheet cutting operation, the first motor drives the lead screw to rotate, causing the slide plate to slide smoothly along the guide rod, which in turn drives the knife holder and blade to move and cut the sheet. The length of the cut sheet is exactly one revolution around the air expansion shaft, ensuring that the length of the sheet cut each time meets the requirements and reducing material waste.

[0014] The machine frame is moved by a cylinder, and the two sides of the machine frame move synchronously by a connecting rod until the air shaft accurately enters the inner side of the first and second limit grooves. Then, the sheet is clamped between the paper core, the first rotating roller, the second rotating roller and the rubber roller and shaped into a semi-circle to prepare for a full rotation. Then, the second motor drives the second sprocket to rotate, which drives the first sprocket to rotate through the chain, and then drives the first gear to rotate. Since the first gear and the second gear are meshed, the second gear rotates along the slide groove. When the second gear rotates, the pneumatic motor starts to work. The output shaft of the pneumatic motor drives the rubber roller to rotate. The friction between the rubber roller and the sheet drives the paper core to rotate. After unwinding, the open end of the sheet is naturally pressed into the gap between the paper core and the rolled material formed by the already wound sheet, forming a stable closed-loop winding structure. This realizes automatic unwinding without tape, reduces manual operation and labor intensity.

[0015] By removing the bolts on one side of the pressure plate, the pressure plate and blade holder clamped on both sides of the blade can be separated, allowing the blade to be removed for replacement. The operation is simple and convenient, facilitating blade replacement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a schematic diagram of the structure of the second gear in this utility model; Figure 4 This is a schematic diagram of the main cross-sectional structure of the box body of this utility model; Figure 5 This is a schematic diagram of the sheet cutting length structure of this utility model; Figure 6 This is a schematic diagram of the sheet winding structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 2. Frame; 3. Cylinder; 4. Connecting rod; 5. Cutting assembly; 51. Housing; 52. Slide plate; 53. Guide rod; 54. First motor; 55. Lead screw; 56. Knife holder; 57. Blade; 58. Pressure plate; 6. Wrapping assembly; 61. First rotating roller; 62. Second rotating roller; 63. First limiting groove; 64. First sprocket; 65. Tensioning wheel; 66. Second sprocket; 67. Fixing rod; 68. Rubber roller; 69. Pneumatic motor; 610. First gear; 611. Second limiting groove; 612. Slide groove; 613. Second gear; 614. Second motor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0021] Please see Figure 1-6 This utility model provides a technical solution: an automatic unwinding device without adhesive tape, including a base 1, a frame 2 slidably connected to the top of the base 1 via a slide rail, a wrapping assembly 6 on one side of the frame 2 for wrapping sheet material around the outside of a paper core; a cylinder 3 is fixed to the inner wall of the base 1, the push rod end of the cylinder 3 is fixed to the bottom side of the frame 2, and a connecting rod 4 is fixed between the frames 2; in this embodiment, both the cylinder 3 and the pneumatic motor 69 are supplied with air by an air compressor. A cutting assembly 5 is provided on one side of the wrapping assembly 6 for cutting the unwound sheet material; the unwinding device of this embodiment is suitable for sheets made of PET, PP, PS, and PC materials.

[0022] The wrapping assembly 6 includes a second gear 613 and a second motor 614. A second limiting groove 611 is provided on one side of the second gear 613. An air shaft is placed inside the second limiting groove 611. A groove is provided inside the second limiting groove 611. The air shaft is adapted to the inside of the groove. A paper core is sleeved on the outside of the air shaft. The sheet material to be wound (not shown in the figure) is located at the top of the connection between the first rotating roller 61 and the paper core on the air shaft. The sheet material being wound is located on the right side of the frame 2. The conveying direction of the sheet material is from top to the first rotating roller 61, the second rotating roller 62 and the rubber roller 68. After passing the cutting assembly 5, the sheet material is cut by the cutting assembly 5 after reaching the winding length.

[0023] A second sprocket 66 is fixed to the output shaft of the second motor 614. The second sprocket 66 is connected to the first sprocket 64 via a chain. A rotating shaft is fixed to the center of one end of the first sprocket 64, and a first gear 610 is fixed to one end of the rotating shaft. A pneumatic motor 69 is fixed to one side of the second gear 613. A rubber roller 68 is fixed to the output shaft of the pneumatic motor 69. The sheet is introduced through the top transition roller and is shaped into a semi-circle under the combined action of the first rotating roller 61, the second rotating roller 62, the rubber roller 68, and the paper core. The pre-forming step is to prepare for the sheet to be able to wrap around the paper core. The rubber roller 68 drives the paper core, which is sleeved on the air expansion shaft, to start rotating through the friction between itself and the sheet, thereby wrapping the sheet around the paper core.

[0024] The second motor 614 is fixed inside the frame 2. A tension wheel 65 connected to the chain is installed on one side of the frame 2. A rotating shaft is rotatably connected to one side of the frame 2. The first gear 610 and the second gear 613 are meshed. A slide groove 612 is provided inside the frame 2. The second gear 613 is slidably connected to the inside of the slide groove 612 through an annular slide rail. There are two second gears 613. A fixing rod 67 is fixed between the two second gears 613. A first limiting groove 63 is provided on one side of the frame 2. A first rotating roller 61 and a second rotating roller 62 are rotatably connected between the frames 2 through a bracket.

[0025] The cutting assembly 5 includes a housing 51. Several guide rods 53 are fixed on the inner wall of the housing 51. A first motor 54 is fixed on one side of the housing 51. A lead screw 55 is fixed to the output shaft end of the first motor 54. Lead screw guards are sleeved on the outer sides of the guide rods 53 and the lead screw 55. One end of the lead screw 55 is rotatably connected to the inner side of the housing 51 through a bearing seat. A sliding plate 52 is threadedly connected to the outer side of the lead screw 55. The sliding plate 52 is slidably connected to the outer side of the guide rods 53 through a linear bearing.

[0026] A blade holder 56 is fixed to the top of the slide plate 52. Both the blade holder 56 and the slide plate 52 are made of metal. A pressure plate 58 is bolted to one side of the blade holder 56. A blade 57 is held between the blade holder 56 and the pressure plate 58. The housing 51 is fixed to one side of the frame 2. In this embodiment, the blade 57 is used to cut a sheet with a thickness of 0.1-0.7mm. The blade 57 can be removed and replaced by removing the bolts on one side of the pressure plate 58. The position of the blade 57 should ensure that the cut sheet can surround the three-inch paper core.

[0027] like Figure 5 As shown, the cutting length is calculated based on the length of the sheet material being cut, and it can be shown as a diagram around a three-inch paper core. L is the length of the running path of the rubber roller 68 around the three-inch paper core. The two rubber rollers 68 in the diagram are the position states before and after winding, respectively. The position of the rubber roller 68 is a semi-circle. L1 is the length of the sheet encircling the rubber roller 68, and L2 is the length between the rubber roller 68 and the blade 57. As can be seen from the above, when L1+L2≥L, L1+L2 needs to be 10mm larger than L so that the sheet can wrap around the three-inch paper core once. After rotation, one end of the sheet is brought into the gap between the sheet and the paper core to achieve winding. D is the diameter of the first rotating roller 61, d is the diameter of the second rotating roller 62, a is the angle of movement of the rubber roller 68, and a1 is the angle at L1.

[0028] The formula for calculating the length L is: L = π * D * a / 360°; The formula for calculating the length L1 is: L = π * d * a1 / 360°.

[0029] like Figure 6At this point, under the action of the rubber roller 68, the sheet is inserted into the gap between the sheet and the paper core, achieving tape-free winding.

[0030] Working principle: The paper core to be used is placed on the outer side of the air shaft to complete the preparation of the winding carrier. The cylinder 3, which is fixed to the inner wall of the base 1, is activated. Its push rod end pushes the frame 2 to slide along the slide rail at the top of the base 1. Since the connecting rod 4 is fixed between the frames 2, the two frames 2 move synchronously until they move to the side of the air shaft, so that the air shaft enters the inner side of the first limiting groove 63 opened on one side of the frame 2 and the second limiting groove 611 opened on the side of the second gear 613, completing the positioning and installation of the air shaft and the winding assembly 6. Then the sheet cutting operation is started. The first motor 54, which is fixed on the outside of the box 51 on one side of the frame 2, is started. Its output shaft drives the lead screw 55. Under the transmission action of the lead screw 55, it slides smoothly along the guide rod 53. The knife holder 56 fixed on the top of the slide plate 52 moves accordingly. The blade 57 held between the knife holder 56 and the pressure plate 58 connected by bolts moves synchronously to cut the sheet. The length of the cut sheet is just enough to circle the air expansion shaft once.

[0031] The sheet is then clamped between the paper core, the first rotating roller 61, the second rotating roller 62, and the rubber roller 68, and is shaped into a semi-circle to prepare for winding. The second motor 614 is started, and its output shaft drives the second sprocket 66 to rotate. The second sprocket 66 drives the first sprocket 64 to rotate via a chain. The first sprocket 64 drives the first gear 610 to rotate via a rotating shaft. Since the first gear 610 and the second gear 613 are meshed, the second gear 613 rotates along the slide groove 612. When the second gear 613 rotates, the pneumatic motor 69 is controlled to start working. The output shaft of the pneumatic motor 69 drives the rubber roller 68 to rotate. The friction between the rubber roller 68 and the sheet drives the paper core to rotate, realizing the winding of the sheet and initially covering the air expansion shaft and the paper core on its outside. Its open end is naturally pressed into the gap between the paper core and the already wound sheet to form a stable closed-loop winding structure. At this point, the entire tapeless automatic winding process is completed. The air shaft, paper core and the outer sheet can be taken out from the inside of the first limiting groove 63 and installed on the winding machine for winding.

[0032] In summary, during the sheet cutting operation, the first motor 54 drives the lead screw 55 to rotate, causing the slide plate 52 to slide smoothly along the guide rod 53, which in turn drives the knife holder 56 and the blade 57 to move and cut the sheet. The length of the cut sheet is exactly one revolution around the air expansion shaft, ensuring that the length of the sheet cut each time meets the requirements, reducing material waste, and improving production efficiency.

[0033] The cylinder 3 pushes the frame 2 to move, and the connecting rod 4 makes the two frames 2 move synchronously until the air shaft accurately enters the inner side of the first limiting groove 63 and the second limiting groove 611. Then the sheet is clamped between the paper core, the first rotating roller 61, the second rotating roller 62 and the rubber roller 68 and is shaped into a semi-circle to prepare for circumduction. Then the second motor 614 drives the second sprocket 66 to rotate, which drives the first sprocket 64 to rotate through the chain, and then drives the first gear 610 to rotate. Since the first gear 610 and the second gear 613 are meshed, the second gear 613 rotates along the slide groove 612. When the second gear 613 rotates, the pneumatic motor 69 starts to work. The output shaft of the pneumatic motor 69 drives the rubber roller 68 to rotate. The friction between the rubber roller 68 and the sheet drives the paper core to rotate. After unwinding, the open end of the sheet is naturally pressed into the gap between the paper core and the wound sheet to form a stable closed-loop winding structure, realizing automatic unwinding without tape, reducing manual operation and reducing labor intensity.

[0034] By removing the bolts on one side of the pressure plate 58, the pressure plate 58 and the blade holder 56 clamped on both sides of the blade 57 can be separated, and the blade 57 can be removed for replacement. The operation is simple and convenient, making it easy to replace the blade 57.

[0035] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A tapeless automatic winding device, comprising a base (1), characterized in that, The base (1) is slidably connected to the frame (2) via a slide rail. The frame (2) is provided with a wrapping assembly (6) on one side. The wrapping assembly (6) is used to wrap the sheet around the outside of the paper core. The wrapping assembly (6) has a cutting assembly (5) on one side, which is used to cut the rolled sheet. The wrapping assembly (6) includes a second gear (613) and a second motor (614). A second limiting groove (611) is provided on one side of the second gear (613). An air expansion shaft is placed inside the second limiting groove (611), and a paper core is sleeved on the outside of the air expansion shaft. The output shaft of the second motor (614) is fixed with a second sprocket (66), the second sprocket (66) is connected to a first sprocket (64) by a chain, a rotating shaft is fixed at one end of the first sprocket (64), and a first gear (610) is fixed at one end of the rotating shaft. A pneumatic motor (69) is fixed on one side of the second gear (613), and a rubber roller (68) is fixed on the output shaft end of the pneumatic motor (69).

2. The tapeless automatic unwinding device according to claim 1, characterized in that, The second motor (614) is fixed inside the frame (2). A tension wheel (65) connected to the chain is installed on one side of the frame (2). The shaft is rotatably connected to one side of the frame (2).

3. The tapeless automatic unwinding device according to claim 1, characterized in that, The first gear (610) is meshed with the second gear (613), and a slide groove (612) is provided on the inner side of the frame (2). The second gear (613) is slidably connected to the inner side of the slide groove (612) through an annular slide rail. There are two second gears (613), and a fixing rod (67) is fixed between the two second gears (613).

4. The tapeless automatic unwinding device according to claim 3, characterized in that, The frame (2) has a first limiting groove (63) on one side, and the frame (2) is rotatably connected by a first rotating roller (61) and a second rotating roller (62) through a bracket.

5. The tapeless automatic unwinding device according to claim 1, characterized in that, The cutting assembly (5) includes a housing (51), with a plurality of guide rods (53) fixed on the inner wall of the housing (51). A first motor (54) is fixed on one side of the housing (51), and a lead screw (55) is fixed on the output shaft end of the first motor (54). One end of the lead screw (55) is rotatably connected to the inner side of the housing (51) through a bearing seat.

6. The tapeless automatic unwinding device according to claim 5, characterized in that, The lead screw (55) is threaded to the outside of a sliding plate (52), which is slidably connected to the outside of the guide rod (53) via a linear bearing.

7. The tapeless automatic unwinding device according to claim 6, characterized in that, The top of the slide plate (52) is fixed with a blade holder (56), and a pressure plate (58) is bolted to one side of the blade holder (56). A blade (57) is held between the blade holder (56) and the pressure plate (58). The housing (51) is fixed to one side of the frame (2).

8. The tapeless automatic unwinding device according to claim 1, characterized in that, A cylinder (3) is fixed to the inner wall of the base (1), and the push rod end of the cylinder (3) is fixed to one side of the bottom of the frame (2). A connecting rod (4) is fixed between the frames (2).

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