Rotary unrolling device for packing belt of finished steel coil

Abstract

The utility model relates to the technical field of unrolling of packing belts, in particular to a rotary unrolling device for a finished steel coil packing belt. Comprising a bottom plate, two assembly frames are fixedly connected to the upper surface of the bottom plate, a packing belt winding roller is rotationally connected between the two assembly frames, a packing belt is fixedly connected to the outer wall of the packing belt winding roller, an unwinding mechanism is arranged at the position, located on one side of the packing belt winding roller, of the upper surface of the bottom plate, and the unwinding mechanism pulls the packing belt to unwind the packing belt. And the packing belt is unwound. When the rotating driving rubber roller unwinds the packing belt, the moving block drives the blade to horizontally reciprocate, the driving rubber roller needs to rotate by a fixed number of turns every time the blade cuts off the packing belt, and the length of the unwound packing belt after the driving rubber roller rotates by the fixed number of turns is the preset length of the packing belt to be obtained. In this way, the multiple sections of packing belts with the preset length are obtained, workers do not need to cut off the packing belts manually, the labor intensity of the workers is reduced, and the efficiency of unrolling and using the packing belts is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packing belt unwinding, in particular to a rotary unwinding device for packing belts of finished steel coils. Background Art

[0002] Strapping tape is usually delivered in rolls and is mainly used for packaging finished steel coils. The strapping tape needs to be unrolled during use, and the finished steel coils are transported through the strapping tape conveyor device and then manually packaged. Multiple sections of strapping tape of equal length are required for manual packaging.

[0003] In order to obtain multiple sections of strapping tape of equal length, it is necessary to cut the strapping tape at a fixed length while unwinding the strapping tape. The existing unwinding device requires workers to manually cut the strapping tape when unwinding the strapping tape of a predetermined length, which increases the labor intensity of the workers and reduces the efficiency of unwinding and using the strapping tape. In view of this, we propose a rotary unwinding device for finished steel coil strapping tape. Summary of the invention

[0004] The utility model aims to provide a rotary unwinding device for packing straps of finished steel coils, so as to solve the problems raised in the above-mentioned background technology.

[0005] The strapping roller is a roller mounted on the bottom of the base plate and is used to roll the strapping belt around the base plate, and the strapping belt is used to roll the strapping belt around the base plate.

[0006] As a further improvement of the present technical solution, the unwinding mechanism includes two C-shaped frames fixedly connected to the upper surface of the bottom plate, a driving rubber roller is rotatably connected between the two C-shaped frames, a motor is fixedly connected to the side wall of one of the C-shaped frames, the output shaft of the motor is transmission-connected to one end of the driving rubber roller, and a pressing rubber roller is arranged above the driving rubber roller, and the pressing rubber roller presses the strapping tape downward so that the strapping tape is in close contact with the top of the driving rubber roller.

[0007] As a further improvement of the technical solution, the cutting mechanism includes two positioning plates fixedly connected to the upper surface of the bottom plate. A reciprocating lead screw is rotatably connected between the two positioning plates. An outer wall of the reciprocating lead screw is fixedly connected with a driven bevel gear. One end of the driving rubber roller away from the motor is fixedly connected with a driving bevel gear. The driving bevel gear meshes with the driven bevel gear. A moving block is threadedly connected to the outside of the reciprocating lead screw. A guide rod is fixedly connected between the two positioning plates. The moving block is slidably sleeved on the outside of the guide rod. One side of the moving block close to the C-shaped frame is fixedly connected with a connecting rod. One end of the connecting rod extends to a position between the two vertical plates and is provided with a cutting assembly.

[0008] As a further improvement of the technical solution, the cutting assembly includes a plurality of spring telescopic rods fixedly connected to one end of the connecting rod. The other ends of the plurality of spring telescopic rods are fixedly connected with ball head rods. The spring telescopic rods limit the ball head rods to horizontally move along the axis direction. One side of the ball head rod away from the spring telescopic rod is fixedly connected with a blade. A backing plate is fixedly connected between the two vertical plates. The vertical section of the packing belt is located between the blade and the backing plate.

[0009] As a further improvement of the technical solution, one side of each of the two vertical plates away from each other is fixedly connected with a return spring. The other end of the return spring is fixedly connected with a side end plate. One side of the side end plate located inside the return spring is fixedly connected with a sliding rod. The other end of the sliding rod slidably penetrates through the side wall of the vertical plate. Both ends of the ball head rod and one end of the sliding rod located between the two vertical plates are provided with ball heads.

[0010] As a further improvement of the technical solution, when the connecting rod drives the ball head rod to horizontally move towards the backing plate, after the ball head of the ball head rod contacts the ball head of the sliding rod, the spring telescopic rod elastically contracts. When the spring telescopic rod contracts to the minimum length, the ball head rod pushes the sliding rod to horizontally move away from the blade, and the return spring elastically stretches. When the ball head of the ball head rod moves to one side of the sliding rod close to the backing plate, the spring telescopic rod rebounds and pushes the blade to horizontally move towards the backing plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For this finished steel coil packing belt rotary unwinding device, when the rotating driving rubber roller unwinds the packing belt, the moving block drives the blade to horizontally reciprocate. Each time the blade cuts the packing belt, the driving rubber roller needs to rotate a fixed number of turns. The length of the packing belt unwound when the driving rubber roller rotates a fixed number of turns is the predetermined length of the packing belt to be obtained. In this way, multiple packing belts of a predetermined length can be obtained without manual cutting of the packing belt by workers, reducing the labor intensity of the workers and improving the efficiency of unwinding and using the packing belt.

[0013] 2. For the rotating unwinding device of the finished steel coil packing belt, when the connecting rod drives the ball head rod to move horizontally in the direction close to the backing plate, after the ball head of the ball head rod contacts the ball head of the sliding rod, the spring telescopic rod elastically contracts to store energy. When the spring telescopic rod rebounds and releases energy, it pushes the blade to move horizontally rapidly in the direction close to the backing plate to cut the packing belt, so that the blade can cut out a flat section on the packing belt, ensuring that the packing belt has a long service life. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the overall sectional structure of the present utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the unwinding mechanism and the packing belt combination of the present utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the cutting mechanism of the present utility model;

[0018] Figure 5 It is one of the schematic diagrams of the structure of the cutting assembly of the present utility model;

[0019] Figure 6 It is the second schematic diagram of the structure of the cutting assembly of the present utility model.

[0020] The meanings of each label in the figure are as follows:

[0021] 1. Base plate; 2. Assembly frame; 3. Packing belt roller; 31. Packing belt;

[0022] 4. Unwinding mechanism; 41. C-shaped frame; 42. Motor; 43. Driving rubber roller; 44. Driving bevel gear; 45. Pressing rubber roller;

[0023] 5. Vertical plate; 51. Reversing roller;

[0024] 6. Cutting mechanism; 61. Positioning plate; 62. Reciprocating lead screw; 63. Driven bevel gear; 64. Guide rod; 65. Moving block; 66. Connecting rod;

[0025] 67. Cutting assembly; 671. Spring telescopic rod; 672. Ball head rod; 673. Blade; 674. Sliding rod; 675. Side end plate; 676. Return spring; 677. Backing plate. Detailed Description of the Preferred Embodiments

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0027] See also Figure 1 - Figure 2 As shown, one of the purposes of this embodiment is to provide a rotary unwinding device for the strapping tape of a finished steel coil, including a base plate 1, two assembly frames 2 are fixedly connected to the upper surface of the base plate 1, a strapping tape roller 3 is rotatably connected between the two assembly frames 2, a strapping tape 31 is fixedly connected to the outer wall of the strapping tape roller 3, and an unwinding mechanism 4 is provided on the upper surface of the base plate 1 at one side of the strapping tape roller 3. The unwinding mechanism 4 pulls the strapping tape 31 to rotate the strapping tape roller 3 to unwind the strapping tape 31.

[0028] In order to unwind the strapping tape 31, the structure of the unwinding mechanism 4 is detailed below, referring to Figure 3 The unwinding mechanism 4 includes two C-shaped frames 41 fixedly connected to the upper surface of the bottom plate 1, and a driving rubber roller 43 is rotatably connected between the two C-shaped frames 41, and one side wall of the C-shaped frame 41 is fixedly connected to a motor 42, and the output shaft of the motor 42 is transmission-connected to one end of the driving rubber roller 43. A pressing rubber roller 45 is arranged above the driving rubber roller 43, and the pressing rubber roller 45 presses the strapping tape 31 downward, so that the strapping tape 31 is in close contact with the top of the driving rubber roller 43, so that there is a large friction force between the strapping tape 31 and the driving rubber roller 43. After the motor 42 is started, its output shaft drives the driving rubber roller 43 to rotate, and the friction force between the strapping tape 31 and the driving rubber roller 43 is utilized to pull the strapping tape 31 in the direction close to the driving rubber roller 43, and the pressing rubber roller 45 rotates in the opposite direction to the driving rubber roller 43, so that the driving rubber roller 43 is extended away from the strapping tape reel 3 side of the strapping tape reel 3, and the strapping tape 31 The part below the bottom plate 1 is also lengthened, and the strapping tape 31 is unwound.

[0029] Two vertical plates 5 are fixedly connected to the upper surface of the bottom plate 1. The vertical plates 5 are located on the side of the unwinding mechanism 4 away from the strapping roller 3. A reversing roller 51 is rotatably connected between the two vertical plates 5. One end of the strapping tape 31 passes over the top of the reversing roller 51 and then vertically downwardly penetrates the side wall of the bottom plate 1 and extends out. A cutting mechanism 6 is provided on the outer side of the vertical section of the strapping tape 31. When the unwinding mechanism 4 unwinds the strapping tape 31 of a fixed length, the cutting mechanism 6 cuts the strapping tape 31. The cut section of the strapping tape 31 falls under the bottom plate 1 under the action of gravity, thereby obtaining multiple sections of strapping tape 31 of equal length, which is convenient for workers to use the strapping tape 31 to pack the finished steel coils.

[0030] When the driving rubber roller 43 releases the packing belt 31 by a fixed length, in order to cut the packing belt 31 in time using the cutting mechanism 6, the structure of the cutting mechanism 6 is refined as follows. Refer to Figure 4 , Figure 5 and Figure 6 , the cutting mechanism 6 includes two positioning plates 61 fixedly connected to the upper surface of the bottom plate 1. A reciprocating lead screw 62 is rotatably connected between the two positioning plates 61. An outer wall of the reciprocating lead screw 62 is fixedly connected with a driven bevel gear 63. One end of the driving rubber roller 43 away from the motor 42 is fixedly connected with a driving bevel gear 44. The driving bevel gear 44 meshes with the driven bevel gear 63. A moving block 65 is threadedly connected to the outside of the reciprocating lead screw 62. A guide rod 64 is fixedly connected between the two positioning plates 61. The moving block 65 is slidably sleeved on the outside of the guide rod 64, so that the moving block 65 can only move horizontally along the axis direction of the guide rod 64. One side of the moving block 65 close to the C-shaped frame 41 is fixedly connected with a connecting rod 66. One end of the connecting rod 66 extends to a position between the two vertical plates 5 and is provided with a cutting assembly 67. The cutting assembly 67 includes a plurality of spring telescopic rods 671 fixedly connected to one end of the connecting rod 66. The other ends of the plurality of spring telescopic rods 671 are fixedly connected with a ball head rod 672. The spring telescopic rod 671 is composed of a spring and a telescopic rod arranged inside the spring. The telescopic rod of the spring telescopic rod 671 is horizontally arranged to limit the ball head rod 672 to move horizontally along the axis direction. One side of the ball head rod 672 away from the spring telescopic rod 671 is fixedly connected with a blade 673. A backing plate 677 is fixedly connected between the two vertical plates 5. The vertical section of the packing belt 31 is located between the blade 673 and the backing plate 677. When the driving rubber roller 43 rotates to unwind the packing belt 31, the driving rubber roller 43 drives the driving bevel gear 44 to rotate. Through the meshing transmission between the driving bevel gear 44 and the driven bevel gear 63, the driven bevel gear 63 drives the reciprocating lead screw 62 to rotate. Through the threaded connection between the reciprocating lead screw 62 and the moving block 65, the moving block 65 moves horizontally back and forth along the axis direction of the guide rod 64. When the moving block 65 drives the blade 673 to move horizontally towards the backing plate 677 through the connecting rod 66, the blade 673 cooperates with the backing plate 677 to cut the packing belt 31 therebetween.

[0031] Since the stroke of the moving block 65 moving on the guide rod 64 is fixed, when the blade 673 follows the connecting rod 66 and the moving block 65 to make a round trip on the guide rod 64, the blade 673 will cut the packing belt 31 and disconnect the packing belt 31. During the round trip of the moving block 65, because the thread on the reciprocating lead screw 62 remains unchanged, the number of turns required for the reciprocating lead screw 62 to drive the moving block 65 is fixed. The driving rubber roller 43 and the reciprocating lead screw 62 are connected by transmission of the driving bevel gear 44 and the driven bevel gear 63. Since the number of turns of the reciprocating lead screw 62 driving the moving block 65 to move is fixed, that is, the number of turns of the driving bevel gear 44 and the driven bevel gear 63 rotating is also fixed. The motor 42 drives and rotates synchronously with the driving bevel gear 44. When the number of turns of the reciprocating lead screw 62 is fixed, the number of turns of the driving rubber roller 43 rotating is also fixed. When the driving rubber roller 43 rotates a fixed number of turns, the length of the packing belt 31 unwound by the driving rubber roller 43 is also fixed. By fixing the number of turns of the driving bevel gear 44 and the driven bevel gear 63 rotating, multiple sections of packing belts with a predetermined length are obtained during the reciprocating movement of the blade 673, eliminating the need for workers to manually cut the packing belt, reducing the labor intensity of workers, and improving the efficiency of unwinding and using the packing belt.

[0032] When the blade 673 pushes the packing belt 31 into contact with the backing plate 677 to cut the packing belt 31, the blade 673 needs to continue to move horizontally in the direction closer to the backing plate 677. The packing belt 31 will continue to unwind, and the packing belt 31 between the blade 673 and the backing plate 677 will continue to move downward, resulting in an uneven cross-section of the packing belt 31, making the packing belt 31 prone to cracking and shortening the service life of the packing belt 31. To solve this problem, a return spring 676 is fixedly connected to each of the sides of the two vertical plates 5 that are away from each other. The other end of the return spring 676 is fixedly connected to a side end plate 675. A sliding rod 674 is fixedly connected to a position inside the return spring 676 on one side of the side end plate 675. The other end of the sliding rod 674 slidably penetrates the side wall of the vertical plate 5. Both ends of the ball head rod 672 and the end of the sliding rod 674 located between the two vertical plates 5 are provided with ball heads. When the connecting rod 66 drives the ball head rod 672 to move horizontally in the direction closer to the backing plate 677 and the ball head of the ball head rod 672 comes into contact with the ball head of the sliding rod 674, the spring telescopic rod 671 elastically contracts to store energy. When the spring telescopic rod 671 contracts to its minimum length and the stored energy reaches the maximum, the ball head rod 672 pushes the sliding rod 674 to move horizontally in the direction away from the blade 673, and the return spring 676 elastically stretches. When the ball head of the ball head rod 672 moves to the side of the sliding rod 674 closer to the backing plate 677, the spring telescopic rod 671 rebounds to release energy, pushing the blade 673 to quickly move horizontally in the direction closer to the backing plate 677, so that the blade 673 quickly comes into contact with the backing plate 677 and cuts the packing belt 31. During the process of the spring telescopic rod 671 rebounding to drive the blade 673 to cut the packing belt 31, the connecting rod 66 does not move, so that the packing belt 31 will not continue to be released, thereby enabling the blade 673 to cut a flat cross-section on the packing belt 31.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary unwinding device for finished steel coil packing belts, comprising a bottom plate (1), characterized in that: On the upper surface of the bottom plate (1), two mounting frames (2) are fixedly connected. A packing tape roll (3) is rotatably connected between the two mounting frames (2). A packing tape (31) is wound around the outer wall of the packing tape roll (3). A tape unwinding mechanism (4) is arranged on the upper surface of the bottom plate (1) at a position on one side of the packing tape roll (3). The tape unwinding mechanism (4) pulls the packing tape (31) to make the packing tape (31) disengage from the packing tape roll (3). Two vertical plates (5) are fixedly connected to the upper surface of the bottom plate (1). The vertical plates (5) are located on the side of the tape unwinding mechanism (4) away from the packing tape roll (3). A reversing roller (51) is rotatably connected between the two vertical plates (5). One end of the packing tape (31) passes around the top of the reversing roller (51) and then vertically penetrates through the side wall of the bottom plate (1) and extends out. A cutting mechanism (6) is arranged outside the vertical section of the packing tape (31). When the tape unwinding mechanism (4) unwinds a fixed length of the packing tape (31), the cutting mechanism (6) cuts the packing tape (31).

2. The rotating unwinding device for the finished steel coil packing belt according to claim 1, wherein: The tape unwinding mechanism (4) includes two C-shaped frames (41) fixedly connected to the upper surface of the bottom plate (1). A driving rubber roller (43) is rotatably connected between the two C-shaped frames (41). A motor (42) is fixedly connected to the side wall of one of the C-shaped frames (41). The output shaft of the motor (42) is in transmission connection with one end of the driving rubber roller (43). A pressing rubber roller (45) is arranged above the driving rubber roller (43). The pressing rubber roller (45) presses the packing tape (31) downward to make the packing tape (31) in close contact with the top of the driving rubber roller (43).

3. The rotary unwinding device for the finished steel coil packing belt according to claim 2, characterized in that: The cutting mechanism (6) includes two positioning plates (61) fixedly connected to the upper surface of the bottom plate (1). A reciprocating lead screw (62) is rotatably connected between the two positioning plates (61). A driven bevel gear (63) is fixedly connected to the outer wall of the reciprocating lead screw (62). A driving bevel gear (44) is fixedly connected to the end of the driving rubber roller (43) away from the motor (42). The driving bevel gear (44) meshes with the driven bevel gear (63). A moving block (65) is in threaded connection with the outside of the reciprocating lead screw (62). A guide rod (64) is fixedly connected between the two positioning plates (61). The moving block (65) is slidably sleeved on the outside of the guide rod (64). One side of the moving block (65) close to the C-shaped frame (41) is fixedly connected with a connecting rod (66). One end of the connecting rod (66) extends to the position between the two vertical plates (5) and is provided with a cutting assembly (67).

4. The finished steel coil packing belt rotary unwinding device according to claim 3, wherein: The cutting component (67) includes a plurality of spring telescopic rods (671) fixedly connected to one end of a connecting rod (66). The other ends of the plurality of spring telescopic rods (671) are fixedly connected to a ball head rod (672). The spring telescopic rods (671) restrict the ball head rod (672) from horizontally moving in the axial direction. A blade (673) is fixedly connected to the side of the ball head rod (672) away from the spring telescopic rods (671). A backing plate (677) is fixedly connected between the two vertical plates (5). The vertical section of the packing belt (31) is located between the blade (673) and the backing plate (677).

5. The finished steel coil packing belt rotating unwinding device according to claim 4, characterized in that: A return spring (676) is fixedly connected to each of the two sides of the vertical plates (5) away from each other. The other end of the return spring (676) is fixedly connected to a side end plate (675). A sliding rod (674) is fixedly connected to the side of the side end plate (675) inside the return spring (676). The other end of the sliding rod (674) slidably penetrates through the side wall of the vertical plate (5). The two ends of the ball head rod (672) and the end of the sliding rod (674) located between the two vertical plates (5) are all provided as ball heads.

6. The rotating unwinding device for finished steel coil packing straps according to claim 5, characterized in that: When the connecting rod (66) drives the ball head rod (672) to horizontally move towards the backing plate (677), after the ball head of the ball head rod (672) contacts the ball head of the sliding rod (674), the spring telescopic rods (671) elastically contract. When the spring telescopic rods (671) contract to the minimum length, the ball head rod (672) pushes the sliding rod (674) to horizontally move away from the blade (673), and the return spring (676) elastically stretches. When the ball head of the ball head rod (672) moves to the side of the sliding rod (674) close to the backing plate (677), the spring telescopic rods (671) rebound to push the blade (673) to horizontally move towards the backing plate (677).

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