A frame structure and an unwinder

Abstract

The present invention discloses a frame structure and an unwinding machine, which include a transmission frame, a driving mechanism and a winding and collecting mechanism. The winding and collecting mechanism is arranged on the transmission frame, the driving mechanism is arranged on one side of the transmission frame, and the driving mechanism is in transmission connection with the transmission frame. A swing roller mechanism capable of swinging up and down is arranged at the front end of the top of the transmission frame. A pushing frame is arranged at the top of the transmission frame, and an upper film mechanism is arranged at the free end of the pushing frame. The upper film mechanism is slidably connected to the pushing frame, and the swing roller mechanism is located above the upper film mechanism; the transmission frame is used for conducting the packaging film; the driving mechanism is used for driving the packaging film to move; the swing roller mechanism is used for self-adjusting the tension degree of the packaging film; during the winding process of the packaging film, the swing roller mechanism swings up and down adaptively according to the tension state of the packaging film. If the packaging film is overly tense, the swing roller mechanism swings downward to make the packaging film loose and avoid the problem of the packaging film breaking. If the packaging film is overly loose, the swing roller mechanism swings upward and supports the bottom of the packaging film to avoid the packaging film slipping.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and particularly relates to a frame structure and an unwinder. Background Art

[0002] The coil material is a cylindrical plastic film or fabric, and after production, it needs to be packaged to prevent problems such as collision and abrasion during transportation.

[0003] The existing packaging of coil materials usually has manual packaging methods and machine packaging methods. For manual packaging, first, one end of the packaging film is adhered to the outer peripheral surface of the coil material through tape, and then the packaging film is wound around the coil material by rolling the coil material, thus completing the packaging of the coil material. However, manual packaging requires a large amount of labor cost and has low packaging efficiency. While using the machine packaging method improves the packaging efficiency and reduces the labor cost, the existing machines cannot ensure the stable tension of the packaging film during packaging, and often there are problems such as the packaging film breaking due to excessive tension or the packaging film slipping due to excessive relaxation during packaging, thus greatly affecting the packaging quality of the coil material.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the Invention

[0005] In view of the deficiencies of the above-mentioned existing technology, the purpose of the present invention is to provide a frame structure that can self-regulate the tension of the packaging film and prevent the packaging film from slipping during the packaging process.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A frame structure includes a transmission frame, a driving mechanism, and a winding and collecting mechanism. The winding and collecting mechanism is arranged on the transmission frame. The driving mechanism is arranged on one side of the transmission frame and is in transmission connection with the transmission frame. A swing roller mechanism that can swing up and down is arranged at the front end of the top of the transmission frame. A pushing frame is arranged at the top of the transmission frame. An upper film mechanism is arranged at the free end of the pushing frame. The upper film mechanism is slidably connected to the pushing frame. The swing roller mechanism is located above the upper film mechanism. The transmission frame is used for conducting the packaging film. The driving mechanism is used for driving the packaging film to move. The winding and collecting mechanism is used for winding and collecting the packaging film. The swing roller mechanism is used for self-regulating the tension of the packaging film. The upper film mechanism is used for winding the packaging film around the coil material.

[0008] In the described frame structure, the swing roller mechanism includes a first swing roller and a swing frame. There are two swing frames, which are respectively arranged on both sides of the first swing roller, and the swing frame is movably connected to the transmission frame. A second swing roller is arranged between the two swing frames; the second swing roller is located outside the first swing roller.

[0009] In the described frame structure, the swing frame includes a swing plate, a pull ear and a torsion spring. One end of the swing plate is rotatably connected to the first swing roller, one end of the pull ear is rotatably connected to the transmission frame, the other end of the swing plate is rotatably connected to the other end of the pull ear, the torsion spring is arranged at the end of the first swing roller, and a trigger rod in contact with the torsion spring is arranged on the swing plate; One end of the second swing roller is rotatably connected to the swing plate.

[0010] In the described frame structure, the transmission frame includes a driving roller, a conducting roller and a transition roller. The conducting roller, the driving roller, the transition roller and the swing roller mechanism are arranged in sequence along the conveying direction of the packaging film, and the driving roller is in transmission connection with the driving mechanism.

[0011] In the described frame structure, a first pinch roller is arranged on one side of the driving roller, second pinch rollers are respectively arranged on both sides of the conducting roller, and a third pinch roller is arranged inside the first swing roller.

[0012] In the described frame structure, the driving roller, the first pinch roller, the transition roller and the third pinch roller are connected by a belt.

[0013] In the described frame structure, the driving mechanism includes a handwheel, and the handwheel is in transmission connection with the driving roller.

[0014] In the described frame structure, the coiling mechanism includes an air shaft, one end of the air shaft is hinged to the transmission frame, and the other end of the air shaft is detachably connected to the transmission frame.

[0015] In the described frame structure, the pushing frame includes a sliding seat, a sliding frame, a sliding rail and a pushing and pulling device. The sliding seat is arranged on the top of the transmission frame, the sliding rail is arranged at the bottom of the sliding seat, the sliding frame is in fit connection with the sliding rail, the pushing and pulling device is arranged on the sliding seat, and the free end of the pushing and pulling device is fixedly connected to the sliding frame.

[0016] The present invention also provides an unwinder, which includes the above-described frame structure.

[0017] Beneficial effects:

[0018] The present invention provides a frame structure and an unwinding machine. During the winding process of the packaging film, the swing roller mechanism swings up and down adaptively according to the tension state of the packaging film. When the packaging film is overly tense, the swing roller mechanism swings downward to relax the packaging film and avoid the problem of the packaging film breaking. When the packaging film is overly loose, the swing roller mechanism will reset and swing upward to support the bottom of the packaging film with the swing roller mechanism, so as to tension the packaging film and avoid the problem of the packaging film slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the frame structure provided by the present invention Figure 1 ;

[0020] Figure 2 is a schematic diagram of the internal structure of the drive mechanism in the frame structure provided by the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the transmission frame in the frame structure provided by the present invention;

[0022] Figure 4 is a schematic diagram of the overall structure of the frame structure provided by the present invention Figure 2 ;

[0023] Figure 5 is Figure 2 the enlarged schematic diagram of area A in

[0024] Description of the main component symbols: 1 - transmission frame, 2 - drive mechanism, 3 - coiling mechanism, 4 - swing roller mechanism, 5 - pushing frame, 6 - film feeding mechanism, 7 - tape pasting mechanism, 8 - base, 9 - packaging film, 11 - driving roller, 12 - conducting roller, 13 - transition roller, 14 - first pinch roller, 15 - second pinch roller, 16 - third pinch roller, 21 - hand wheel, 22 - first face gear, 23 - second face gear, 41 - first swing roller, 42 - swing frame, 43 - second swing roller, 51 - sliding seat, 52 - sliding frame, 53 - slide rail, 54 - pushing and pulling device, 81 - slider, 421 - swing plate, 422 - pulling ear, 423 - torsion spring, 424 - trigger rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention provides a frame structure and an unwinding machine. To make the purpose, technical solution and effect of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "middle part", "inner side", "outer side", etc. are based on the orientation or positional relationships of the present invention in the drawings, and are only for the convenience of describing the present invention and simplifying the description. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0027] Please refer to Figures 1 to 5 , the present invention provides a frame structure, including a transmission frame 1, a driving mechanism 2 and a winding and collecting mechanism 3. The winding and collecting mechanism 3 is arranged on the transmission frame 1. The driving mechanism 2 is arranged on one side of the transmission frame 1, and the driving mechanism 2 is in transmission connection with the transmission frame 1. A swing roller mechanism 4 capable of swinging up and down is arranged at the front end of the top of the transmission frame 1. A pushing frame 5 is arranged at the top of the transmission frame 1. The free end of the pushing frame 5 is provided with an upper film mechanism 6. The upper film mechanism 6 is slidably connected with the pushing frame 5. The swing roller mechanism 4 is located above the upper film mechanism 6. The transmission frame 1 is used for conducting the packaging film 9. The driving mechanism 2 is used for driving the packaging film 9 to move. The winding and collecting mechanism 3 is used for winding and collecting the packaging film 9. The swing roller mechanism 4 is used for self-adjusting the tension degree of the packaging film 9. The upper film mechanism 6 is used for winding the packaging film 9 around the coil material.

[0028] In actual application, this frame structure belongs to a part of the unwinder and needs to be used in cooperation with the unwinder. The unwinder further includes a rotating mechanism for making the coil material roll. When in use, the packaging film 9 is wound and collected on the winding and collecting mechanism 3. The pushing frame 5 pushes the upper film mechanism 6 above the coil material, and the distance between the upper film mechanism 6 and the coil material is adjusted through the pushing frame 5. The free end of the packaging film 9 enters the inside of the transmission frame 1 from one side of the transmission frame 1, and the driving mechanism 2 controls the transmission frame 1 to conduct the packaging film 9 to the swing roller mechanism 4. After the packaging film 9 passes through the swing roller mechanism 4, it is connected to the upper die mechanism again. The packaging film 9 is wound around the surface of the coil material through the upper film mechanism 6. During the winding process of the packaging film 9, the swing roller mechanism 4 swings up and down adaptively according to the tension state of the packaging film 9. If the packaging film 9 is overly tense, the swing roller mechanism 4 swings downward to relax the packaging film 9 and avoid the problem of the packaging film 9 breaking. If the packaging film 9 is overly loose, the swing roller mechanism 4 will reset and swing upward to support the bottom of the packaging film 9 with the swing roller mechanism 4 to tighten the packaging film 9 and avoid the problem of the packaging film 9 slipping. The tension state of the packaging film 9 can be adjusted through the swing roller mechanism 4 that can swing up and down.

[0029] In one embodiment, the upper film mechanism 6 is provided with one or more guide rollers (not shown in the figure), and the packaging film 9 is attached to the surface of the coil material through the guide rollers.

[0030] In one embodiment, a plurality of tape pasting mechanisms 7 are provided at the bottom of the upper film mechanism 6; the tape pasting mechanism 7 is used to cooperate with the upper film mechanism 6 to paste the packaging film 9 on the surface of the coil, and drive the coil to roll through the rotating mechanism, so that the packaging film 9 is wound around the coil.

[0031] In one embodiment, a base 8 is provided at the bottom of the transmission frame 1, and one or more sliders 81 are provided at the bottom of the base 8; the base 8 is cooperatively installed with an external sliding mechanism through the sliders 81, and the left and right sliding of the frame structure is controlled by the external sliding mechanism, so as to improve the flexibility of the use of the frame structure.

[0032] As Figures 1 to 5 shown, further, the swing roller mechanism 4 includes a first swing roller 41 and a swing frame 42. There are two swing frames 42, and the two swing frames 42 are respectively arranged on both sides of the first swing roller 41, and the swing frame 42 is movably connected to the transmission frame 1. A second swing roller 43 is arranged between the two swing frames 42; the second swing roller 43 is located outside the first swing roller 41; during use, the packaging film 9 is clamped between the first swing roller 41 and the second swing roller 43, and the second swing roller 43 can swing up and down relative to the first swing roller 41. If the packaging film 9 is too tense, the packaging film 9 presses against the second swing roller 43, and the swing roller mechanism 4 swings downward, so that the packaging film 9 is relaxed, avoiding the problem of breakage of the packaging film 9. If the packaging film 9 is too loose, the second swing roller 43 will swing upward to reset and support the bottom of the packaging film 9, so that the packaging film 9 is tensioned, avoiding the problem of slipping of the packaging film 9.

[0033] As Figures 1 to 5 shown, further, the swing frame 42 includes a swing plate 421, a pulling ear 422 and a torsion spring 423. One end of the swing plate 421 is rotatably connected to the first swing roller 41, one end of the pulling ear 422 is rotatably connected to the transmission frame 1, the other end of the swing plate 421 is rotatably connected to the other end of the pulling ear 422, the torsion spring 423 is arranged at the end of the first swing roller 41, and a trigger rod 424 in contact with the torsion spring 423 is arranged on the swing plate 421; one end of the second swing roller 43 is rotatably connected to the swing plate 421; during use, the swing plate 421 rotates following the second swing roller 43. When the swing plate 421 rotates, its swing amplitude is restricted by the pulling ear 422, avoiding excessive swing amplitude of the swing plate 421, and when the swing plate 421 swings, it touches the torsion spring 423 through the trigger rod 424, and the torsion spring 423 buffers the swing speed of the second swing roller 43 and completes the reset action, so as to realize the self-adjustment of the tension state of the packaging film 9 by the second swing roller 43.

[0034] AsFigures 1 to 5 As shown, further, the transmission frame 1 includes a driving roller 11, a conducting roller 12 and a transition roller 13. The conducting roller 12, the driving roller 11, the transition roller 13 and the swing roller mechanism 4 are arranged in sequence along the transmission direction of the packaging film 9. The driving roller 11 is in transmission connection with the driving mechanism 2. The driving mechanism 2 drives the driving roller 11 to rotate, thereby driving the packaging film 9 to be transmitted along the conducting roller 12, the driving roller 11 and the transition roller 13. By means of the conducting roller 12, the driving roller 11 and the transition roller 13, the contact area between the transmission frame 1 and the packaging film 9 is increased, thereby preventing the problem of slipping of the packaging film 9 during transmission.

[0035] As Figures 1 to 5 shown, further, a first pinch roller 14 is arranged on one side of the driving roller 11, second pinch rollers 15 are respectively arranged on both sides of the conducting roller 12, and a third pinch roller 16 is arranged on the inner side of the first swing roller 41. By means of the first pinch roller 14, the contact area between the driving roller 11 and the packaging film 9 is increased, preventing the problem of slipping between the driving roller 11 and the packaging film 9. By means of the second pinch rollers 15, the contact area between the conducting roller 12 and the packaging film 9 is increased, preventing the problem of slipping between the conducting roller 12 and the packaging film 9. By means of the third pinch roller 16, the contact area between the first swing roller 41 and the packaging film 9 is increased, preventing the problem of slipping between the first swing roller 41 and the packaging film 9.

[0036] As Figures 1 to 5 shown, further, the driving roller 11, the first pinch roller 14, the transition roller 13 and the third pinch roller 16 are connected by a belt. The driving mechanism 2 can drive the driving roller 11, the first pinch roller 14, the transition roller 13 and the third pinch roller 16 to roll simultaneously through the belt, improving the synchronism of the rolling of the driving roller 11, the first pinch roller 14, the transition roller 13 and the third pinch roller 16, and making the transmission of the packaging film 9 more stable.

[0037] As Figures 1 to 5 shown, further, the driving mechanism 2 includes a handwheel 21. The handwheel 21 is in transmission connection with the driving roller 11. The user drives the driving roller 11 to rotate through the handwheel 21. In one embodiment, a first face gear 22 is arranged at the end of the handwheel 21, and a second face gear 23 which is in mating connection with the first face gear 22 is arranged at one end of the driving roller 11. The transmission connection between the handwheel 21 and the driving roller 11 is realized through the first face gear 22 and the second face gear 23.

[0038] As Figures 1 to 5As shown in the figure, further, the coiling mechanism 3 includes an air shaft, one end of the air shaft is hinged to the transmission frame 1, and the other end of the air shaft is detachably connected to the transmission frame 1; the packaging film 9 is fixed by the air shaft to avoid the problem of slipping of the packaging film 9 during use. In addition, when the packaging film 9 is used up, one end of the air shaft can be separated from the transmission frame 1, and the air shaft can be turned outward, so as to facilitate the installation of the packaging film 9.

[0039] As Figures 1 to 5 shown in the figure, further, the pushing frame 5 includes a sliding seat 51, a sliding frame 52, a sliding rail 53 and a pushing and pulling device 54. The sliding seat 51 is arranged on the top of the transmission frame 1, the sliding rail 53 is arranged at the bottom of the sliding seat 51, the sliding frame 52 is connected with the sliding rail 53 in a matching manner, the pushing and pulling device 54 is arranged on the sliding seat 51, and the free end of the pushing and pulling device 54 is fixedly connected with the sliding frame 52; during use, the sliding frame 52 is pushed and pulled by the pushing and pulling device 54, so that the sliding frame 52 can slide up and down along the sliding rail 53, thereby realizing the movement of the film feeding mechanism 6; in one embodiment, the free end of the pushing and pulling device 53 and the sliding frame 52 can be connected by welding; in one embodiment, the pushing and pulling device 53 can be a pushing and pulling cylinder.

[0040] The present invention also provides an unwinding machine, which includes the above-mentioned frame structure.

[0041] To sum up, during the winding process of the packaging film 9, the swing roller mechanism 4 swings up and down adaptively according to the tension state of the packaging film 9. If the packaging film 9 is overly tense, the swing roller mechanism 4 will swing downward to relax the packaging film 9 and avoid the problem of breakage of the packaging film 9. If the packaging film 9 is overly loose, the swing roller mechanism 4 will reset and swing upward to support the bottom of the packaging film 9 with the swing roller mechanism 4, so as to tension the packaging film 9 and avoid the problem of slipping of the packaging film 9.

[0042] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions of the present invention and its inventive concept, and all such changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A rack structure, characterized in that: The invention comprises a transmission frame, a driving mechanism and a winding and collecting mechanism, wherein the winding and collecting mechanism is arranged on the transmission frame, the driving mechanism is arranged on one side of the transmission frame, and the driving mechanism is connected to the transmission frame in a transmission manner, a swing roller mechanism which can swing up and down is arranged at the top front end of the transmission frame, a pushing frame is arranged at the top of the transmission frame, a film-applying mechanism is arranged at the free end of the pushing frame, the film-applying mechanism is connected to the pushing frame in a sliding manner, and the swing roller mechanism is located above the film-applying mechanism; the transmission frame is used for conducting packaging film; the driving mechanism is used for driving the packaging film to move; the winding and collecting mechanism is used for rolling and collecting packaging film; the swing roller mechanism is used for self-adjusting the tension of the packaging film; the film-applying mechanism is used for winding the packaging film on the coil; The swing roller mechanism includes a first swing roller and a swing frame. There are two swing frames, which are respectively arranged on both sides of the first swing roller, and the swing frame is movably connected to the transmission frame. A second swing roller is arranged between the two swing frames; the second swing roller is located on the outside of the first swing roller; the packaging film is clamped between the first swing roller and the second swing roller, and the second swing roller can swing up and down relative to the first swing roller. If the packaging film is too tight, the packaging film presses against the second swing roller, and the swing roller mechanism swings downward; if the packaging film is too loose, the second swing roller will reset and swing upward; The swing frame includes a swing plate, a pull ear and a torsion spring, one end of the swing plate is rotatably connected to the first swing roller, one end of the pull ear is rotatably connected to the transmission frame, the other end of the swing plate is rotatably connected to the other end of the pull ear, the torsion spring is arranged at the end of the first swing roller, and a trigger rod in contact with the torsion spring is arranged on the swing plate; one end of the second swing roller is rotatably connected to the swing plate; A base is arranged at the bottom of the transmission frame, and one or more sliding blocks are arranged at the bottom of the base.

2. A rack structure according to claim 1, characterized in that: The transmission frame comprises a driving roller, a conducting roller and a transition roller. The conducting roller, the driving roller, the transition roller and the swing roller mechanism are arranged in sequence along the conducting direction of the packaging film. The driving roller is in transmission connection with the driving mechanism.

3. A rack structure according to claim 2, characterized in that: A first clamping roller is arranged on one side of the active roller, second clamping rollers are arranged on both sides of the conductive roller, and a third clamping roller is arranged on the inner side of the first swing roller.

4. A frame structure according to claim 3, characterized in that: The active roller, the first clamping roller, the transition roller and the third clamping roller are connected by a belt.

5. A frame structure according to claim 2, characterized in that: The driving mechanism comprises a hand wheel, and the hand wheel is drivingly connected to the active roller.

6. A frame structure according to claim 1, wherein, The winding mechanism comprises an air-expanding shaft, one end of which is hinged to the transmission frame, and the other end of which is detachably connected to the transmission frame.

7. A frame structure according to claim 1, characterized in that: The pushing frame includes a slide seat, a carriage, a slide rail and a push-pull device. The slide seat is arranged on the top of the transmission frame, the slide rail is arranged on the bottom of the slide seat, the slide frame is cooperatively connected with the slide rail, the push-pull device is arranged on the slide seat, and the free end of the push-pull device is fixedly connected to the slide seat.

8. A unwind machine, characterized in that, It comprises a frame structure as described in any one of claims 1-7.

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