Automatic unwinding device with large winding diameter and large weight

Abstract

Compared with a single-arm bearing structure in the prior art, the automatic unwinding device with the large winding diameter and the large weight has the advantages that a double-arm bearing frame comprising two bearing frames is adopted, the bearing structure of a paper winding shaft is strengthened and expanded, thrust is provided through two paper roll lifting air cylinders, and therefore the paper winding shaft can be automatically unwound. According to the paper roll loading device, the diameter and the weight of the loaded paper rolls can be increased (according to tests, the paper rolls with the diameter of 1500 mm and the weight of 1000 kg can be used by the paper roll loading device), the rewinding operation of the paper rolls is reduced and avoided, the loss of paper roll materials is reduced, the operation process is reduced, and the production efficiency is improved; and the parallelism precision of the paper scroll is improved, the paper output is more stable, the generation probability of defective products is reduced, the safety of operation is ensured to the maximum extent, and the error-tolerant rate of operation is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper roll unwinding devices, in particular to an automatic unwinding device with a large roll diameter and a large weight. Background Art

[0002] The paper roll unwinding device is used to unwind paper, and can be used in production fields such as paper printing. Figure 1 As shown, existing paper roll unwinding devices mostly use a single-arm fixed or single-arm lifting unwinding shaft (the unwinding shaft is also the paper roll shaft) structure. These unwinding devices have the advantages of low cost and fast operation. However, the paper roll diameter that can be loaded by these unwinding devices is generally only around 750-1000 mm, and the maximum allowable paper roll weight generally cannot exceed 600 kg. Therefore, when the paper roll specifications exceed these restrictions, the user needs to use other equipment to rewind the paper roll to the allowable specifications before it can be used on the unwinding device. This process not only reduces the user's work efficiency, but also easily causes some material loss during the rewinding process. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic unwinding device with a large roll diameter and a large weight, which can solve the above technical problems.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatic unwinding device with large roll diameter and heavy weight, comprising: a frame, two supporting frames, two paper roll lifting cylinders and a paper roll lifting shaft. The frame is provided with two side panels, and the supporting frame is provided with an upper end, a lower end and a front end distributed in a triangular shape. The upper ends of the two supporting frames are connected by a paper roll lifting shaft, and the two ends of the paper roll lifting shaft are respectively rotatably arranged on the two side panels. The two paper roll lifting cylinders are respectively arranged horizontally at the bottom ends of the two side panels. The lower end of the supporting frame is connected to the paper roll lifting cylinder, and the front end of the supporting frame is used to place the paper roll shaft.

[0007] Preferably, a shaft support groove is provided at the front end of the carrier.

[0008] Preferably, the automatic unwinding device with large roll diameter and heavy weight further includes two safety block devices, which are arranged on the carrier and close to the front end of the carrier.

[0009] Preferably, the safety block device comprises a safety block and a telescopic drive device that are connected to each other.

[0010] Preferably, the automatic unwinding device with large roll diameter and heavy weight further includes a paper roll shaft control device, and the paper roll shaft is connected to the paper roll shaft control device.

[0011] (3) Beneficial effects

[0012] Compared with the existing technology, the utility model provides an automatic unwinding device with large roll diameter and large weight, which has the following beneficial effects: compared with the single-arm load-bearing structure of the existing technology, the utility model adopts a double-arm load-bearing frame including two load-bearing frames, which strengthens and expands the load-bearing structure of the paper roll shaft, and provides thrust through two paper roll lifting cylinders, thereby being able to increase the diameter and weight of the paper roll loaded by the utility model (after testing, the utility model can use a paper roll with a diameter of 1500mm and 1000 kilograms), reducing or avoiding the rewinding operation of the paper roll, thereby reducing the loss of paper roll materials, reducing the operating process, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a paper roll unwinding device in the prior art;

[0014] Figure 2 This is a top view of an automatic unwinding device with large roll diameter and heavy weight according to the present invention;

[0015] Figure 3 This is a side view of an automatic unwinding device with large roll diameter and heavy weight according to the present invention;

[0016] Figure 4 This is a schematic diagram of a first working state of an automatic unwinding device with large roll diameter and heavy weight according to the present invention;

[0017] Figure 5 This is a schematic diagram of the second working state of an automatic unwinding device with large roll diameter and heavy weight according to the present invention;

[0018] Figure 6 This is a schematic diagram of the third working state of an automatic unwinding device with large roll diameter and heavy weight according to the present invention;

[0019] Figure 7 This is a schematic diagram of a fourth working state of an automatic unwinding device with large roll diameter and heavy weight according to the present invention.

[0020] The numbers in the figure are: 1 carrier, 2 paper roll lifting cylinder, 3 paper roll lifting shaft, 4 side plate, 5 paper roll shaft, 6 shaft support groove, 7 safety stop device, 8 safety stop, 9 paper roll shaft control device. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides an automatic unwinding device for large roll diameter and heavy weight, comprising a frame, two supporting frames 1, two paper roll lifting cylinders 2, and a paper roll lifting shaft 3. The frame is provided with two side panels 4, and the supporting frames 1 are provided with an upper end, a lower end, and a front end arranged in a triangular pattern. The upper ends of the two supporting frames 1 are connected by the paper roll lifting shaft 3, and the ends of the paper roll lifting shaft 3 are rotatably disposed on the two side panels 4. The two supporting frames 1 can be rotated relative to the frame via the paper roll lifting shaft 3. Two paper roll lifting cylinders 2 are respectively disposed transversely at the bottom ends of the two side panels 4. The lower ends of the supporting frames 1 are connected to the paper roll lifting cylinders 2, and the front ends of the supporting frames 1 are used to place a paper roll shaft 5 (i.e., an unwinding shaft).

[0023] Preferably, a shaft support groove 6 is provided at the front end of the carrier 1 , and the shaft support groove 6 is used to place the shaft support of the paper roll 5 .

[0024] In addition, preferably, the present invention may also include two safety block devices 7, which are arranged on the carrier 1 and near the front end of the carrier 1. Furthermore, the safety block device 7 includes a connected safety block 8 and a telescopic drive device. When the paper roll 5 is placed in the shaft support groove 6 of the carrier 1, the safety block 8 is driven by the telescopic drive device to extend to prevent the shaft support of the paper roll 5 from escaping from the shaft support groove 6, thereby improving the safety of the present invention. The above-mentioned telescopic drive device can specifically adopt a drive device such as a cylinder, and no excessive restrictions are imposed here.

[0025] In addition, the present invention may further include a paper reel control device 9, one end of the paper reel 5 is connected to the paper reel control device 9, and the paper reel control device 9 drives the paper reel 5 to rotate to unwind the paper. The paper reel control device 9 may specifically be a motor.

[0026] The working process of the large-diameter and heavy-weight automatic unwinding device of the utility model is as follows: (1) Figure 4 As shown, the safety block device 7 is opened to control the safety block 8 to retract, and the paper roll lifting cylinder 2 pulls the carrier 1 to rotate and lower. The shaft core of the new paper roll is loaded into the paper roll shaft 5 and then rolls on the ground into the carrier 1. (2) Figure 5 As shown, the paper roll lifting cylinder 2 pushes the carrier 1 to rotate and lift, and places the paper roll shaft 5 on the new paper roll in the shaft support groove 6 of the carrier 1. (3) Figure 6As shown, the paper roll lifting cylinder 2 continues to push the carrier 1 to rotate and lift it into position, so that the new paper roll leaves the ground and enters a free rotation state, and the new and old paper are connected. (4) Figure 7 As shown, after the new and old paper sheets are connected, the safety block device 7 is extended, and the paper roll shaft 5 on the new paper roll is connected to the paper roll shaft control device 9, and normal unwinding operation begins.

[0027] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic unwinding device with large roll diameter and heavy weight, characterized in that: include: A frame, two carrying frames, two paper roll lifting cylinders and a paper roll lifting shaft. The frame is provided with two side panels. The carrying frame is provided with an upper end, a lower end and a front end distributed in a triangular shape. The upper ends of the two carrying frames are connected by the paper roll lifting shaft. The two ends of the paper roll lifting shaft are rotatably provided on the two side panels. The two paper roll lifting cylinders are horizontally provided at the bottom ends of the two side panels. The lower end of the carrying frame is connected to the paper roll lifting cylinder. The front end of the carrying frame is used to place the paper roll shaft.

2. The large-diameter and heavy-weight automatic unwinding device according to claim 1, characterized in that: The front end of the carrier is provided with an axle support groove.

3. The large-diameter and heavy-weight automatic unwinding device according to claim 1, characterized in that: It also includes two safety block devices, which are arranged on the carrier and close to the front end of the carrier.

4. The large-diameter and heavy-weight automatic unwinding device according to claim 3, characterized in that: The safety block device comprises a safety block and a telescopic drive device that are connected.

5. The large-diameter and heavy-weight automatic unwinding device according to claim 1 is characterized in that: It also includes a paper reel control device, and the paper reel is connected to the paper reel control device.

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