A looper device for a colored aluminum production line

Abstract

This invention discloses a looper device for a colored aluminum production line, belonging to the field of sheet processing technology. The looper device includes a looper tower, which includes a support frame. The support frame is equipped with a control device for controlling the looper tower's loading and unloading of colored aluminum. The control device includes a fixed frame, a movable roller, and two reversing rollers, which are respectively disposed on both sides of the movable roller. The movable roller is slidably connected to the fixed frame via a sliding mechanism. Both the movable roller and the two reversing rollers are rotatably connected to the fixed frame. The fixed frame is equipped with a counterweight mechanism that pulls the movable roller to one side and a detector for detecting the displacement of the movable roller. This invention utilizes the cooperation of the sliding mechanism and the counterweight mechanism to enable the movable roller to shift when the tension changes, which is detected by the detector. Simultaneously, this information is transmitted to the looper tower, causing the looper tower to take corresponding actions to reset the movable roller. This method achieves automatic adjustment of the looper tower.

Description

Technical Field

[0001] This invention relates to the field of sheet processing technology, and in particular to a looper device for a color aluminum production line. Background Technology

[0002] In the production line of colored aluminum, the looper tower is a relatively important piece of equipment. It can temporarily store colored aluminum and unfold it over a large area for heat dissipation or flaw detection. At the same time, during the coil changing process, the temporarily stored colored aluminum can be released so that the production line can continue without stopping. However, the release or storage of colored aluminum in the existing looper tower is generally done manually, which is quite labor-intensive. Therefore, a new type of looper device is needed to solve this problem. Summary of the Invention

[0003] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a looper device for a color aluminum production line.

[0005] To achieve the above objectives, the technical solution of the present invention is: a looper device for a colored aluminum production line, comprising a looper tower, the looper tower comprising a support, the support being provided with a control device for controlling the looper tower to take in and release colored aluminum, the control device comprising a fixed frame, a movable roller and two reversing rollers, the two reversing rollers being respectively disposed on both sides of the movable roller, the movable roller being slidably connected to the fixed frame via a sliding mechanism, the movable roller and the two reversing rollers being rotatably connected to the fixed frame, the fixed frame being provided with a counterweight mechanism for pulling the movable roller to one side, and the fixed frame being provided with a detector for detecting the displacement of the movable roller.

[0006] By adopting the above technical solution, under normal conditions, the tension of the colored aluminum and the pulling force of the counterweight mechanism on the movable roller are balanced. Therefore, the movable roller does not slip. When the colored aluminum is no longer fed into the looper tower, the tension of the colored aluminum will increase because the processing equipment at the rear will continue to feed material forward. The reaction force of the tension will cause the movable roller to overcome the pulling force applied by the counterweight mechanism and slide through the sliding mechanism, thereby generating displacement and being detected by the detector (which can be a displacement sensor). At this time, the looper tower will release the colored aluminum, making the tension less than the pulling force of the counterweight mechanism, so that the movable roller will be reset under the pull of the counterweight mechanism. After resetting, the looper tower stops working. This process repeats to control the looper tower. When the tension decreases, the movable roller will be pulled by the counterweight mechanism and displaced, which will be detected by the detector. The detector will then control the looper tower to retract the colored aluminum, making the tension greater than the pulling force of the counterweight mechanism, thereby driving the movable roller to reset. In this way, automatic control of the looper tower is achieved.

[0007] Preferably, the sliding mechanism is provided in two sets. The two ends of the movable roller are slidably connected to the fixed frame via the two sets of sliding mechanisms. Each set of sliding mechanisms includes a base, a slider, and a guide rod. The guide rod is fixedly connected to the base, the slider is slidably connected to the guide rod, and the slider is rotatably connected to the movable roller. The counterweight mechanism is connected to the slider. This invention utilizes the cooperation of the guide rod and the slider to ensure stable support at both ends of the movable roller, while also enabling stable sliding, ensuring that the two ends of the movable roller do not deviate from each other.

[0008] Preferably, the counterweight mechanism includes a pull rope, a counterweight cylinder, a counterweight block, and a guide cylinder. The guide cylinder is fixedly connected to the fixed frame, the counterweight cylinder is sleeved on the outside of the guide cylinder, and the counterweight cylinder is slidably connected to the guide cylinder. The counterweight block is disposed inside the counterweight cylinder. One end of the pull rope is fixedly connected to the bottom of the counterweight cylinder, and the other end of the pull rope is connected to the movable roller. This invention, by placing the counterweight block inside the counterweight cylinder and connecting the counterweight cylinder to the movable roller via the pull rope, can utilize the weight of the counterweight block to apply a constant tension to the movable roller. This ensures that the aluminum alloy is always subjected to a constant tension, thus reacting quickly to changes in tension and generating displacement. The guide cylinder guides the counterweight cylinder to slide, preventing the counterweight cylinder from swinging and causing danger.

[0009] Preferably, the counterweights are provided in multiple quantities, and the fixing frame is provided with an adjustment mechanism for adjusting the number of counterweights in the counterweight cylinder. This invention, by providing multiple counterweights, allows for adjustment of the number of counterweights to accommodate different tension requirements.

[0010] Preferably, the adjusting mechanism includes a storage box for storing counterweights, a pushing mechanism for pushing the counterweights from the storage box into the counterweight cylinder, an ejection mechanism for pushing the counterweights in the counterweight cylinder to the inlet of the storage box, and a pushing mechanism for pushing the counterweights from the counterweight cylinder into the storage box. The storage box is fixedly connected to the fixing frame, and the outlet of the storage box is connected to the guide cylinder. This invention utilizes the storage box to hold excess counterweights. When weight needs to be added, the pushing mechanism pushes the counterweights one by one into the counterweight cylinder. When weight needs to be reduced, the ejection mechanism first pushes all the counterweights to the top of the guide cylinder, and then the pushing mechanism pushes the uppermost counterweight into the storage box. Each time a counterweight is pushed in, the ejection mechanism causes all the counterweights to rise a certain distance.

[0011] Preferably, each of the pushing mechanisms includes a cylinder and a pushing member. The pushing member is slidably connected to the storage box and abuts against the counterweight. The cylinder is fixedly connected to the fixing frame, and the output rod of the cylinder is drively connected to the pushing member. This invention utilizes the extension and retraction of the cylinder to drive the pushing member to slide, thereby pushing the counterweight into the counterweight cylinder. Furthermore, it can cause the pushing member to slide backward to create space before the pushing mechanism pushes the counterweight into the storage box.

[0012] Preferably, the ejection mechanism includes a top plate and a second cylinder. The top plate is disposed inside the counterweight cylinder and abuts against the bottom of the counterweight block located at the bottom of the counterweight cylinder. The second cylinder is fixedly connected to the counterweight cylinder, and the output rod of the second cylinder is kinetically connected to the top plate. This invention utilizes the extension and retraction of the second cylinder to drive the top plate to slide, enabling the top plate to move all the counterweight blocks together. During adjustment, all counterweight blocks are moved to the desired position, and after adjustment, all counterweight blocks are reset.

[0013] Preferably, the pushing mechanism includes a pushing member and a cylinder three. The pushing member is slidably connected to the guide cylinder and aligned with the entrance of the storage box. The cylinder three is fixedly connected to the fixing frame, and the output rod of the cylinder three is drively connected to the pushing member. This invention utilizes the extension and retraction of the cylinder three to drive the pushing member to reciprocate, pushing a counterweight into the storage box with each reciprocating slide.

[0014] Preferably, the fixing frame is equipped with a balancing mechanism for balancing the weight of the counterweight cylinder, the second cylinder, and the top plate. The balancing mechanism includes a second pull rope and a balance block, with both ends of the second pull rope connected to the movable roller and the balance block, respectively. This invention utilizes the second pull rope and the balance block to apply force from the other side of the movable roller, thereby offsetting the weight other than the counterweight block. This ensures that the pulling force applied to the movable roller is equal to the total weight of all the counterweight blocks, making adjustment easier.

[0015] Preferably, both ends of the counterweight are chamfered. This invention utilizes the chamfers at both ends of the counterweight to make it easier to store the counterweight in a storage box or counterweight cylinder.

[0016] In summary, the beneficial effects of this invention are:

[0017] 1. By utilizing the cooperation of the sliding mechanism and the counterweight mechanism, the movable roller can be displaced when the tension changes, and this displacement is detected by the detector. At the same time, the information is transmitted to the looper tower, causing the looper tower to take corresponding actions to reset the movable roller. In this way, the automatic adjustment of the looper tower is achieved.

[0018] 2. The tension of the counterweight mechanism can be adjusted using the adjustment mechanism.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0020] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0021] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall cross-sectional structure;

[0026] Figure 2 Schematic diagram of the control device structure Figure 1 ;

[0027] Figure 3Schematic diagram of the control device structure Figure 2 ;

[0028] Figure 4 This is a cross-sectional structural diagram of the control device.

[0029] Explanation of main reference numerals in the attached drawings: 1. Loop tower; 2. Fixed frame; 3. Movable roller; 4. Reversing roller; 5. Base; 6. Sliding block; 7. Guide rod; 8. Pull rope one; 9. Counterweight cylinder; 10. Counterweight block; 11. Guide cylinder; 12. Storage box; 13. Cylinder one; 14. Pushing component; 15. Cylinder two; 16. Top plate; 17. Pushing component; 18. Cylinder three; 19. Pull rope two; 20. Balance block; 21. Chamfer; 22. Control device; 23. Detector. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0031] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] like Figure 1-4 As shown, a looper device for a colored aluminum production line includes a looper tower 1. The looper tower 1 includes a support frame, and the support frame is equipped with a control device 22 for controlling the looper tower 1 to take in and release colored aluminum. The control device 22 includes a fixed frame 2, a movable roller 3, and two reversing rollers 4. The two reversing rollers 4 are respectively arranged on both sides of the movable roller 3. The movable roller 3 is slidably connected to the fixed frame 2 through a sliding mechanism. The movable roller 3 and the two reversing rollers 4 are rotatably connected to the fixed frame 2. The fixed frame 2 is equipped with a counterweight mechanism to pull the movable roller 3 to one side. The fixed frame 2 is equipped with a detector 23 for detecting the displacement of the movable roller 3.

[0035] By adopting the above technical solution, under normal conditions, the tension of the colored aluminum and the pulling force of the counterweight mechanism on the movable roller 3 are balanced. Therefore, the movable roller 3 does not slide. When the colored aluminum is no longer fed into the looper tower 1, the tension of the colored aluminum will increase because the processing equipment at the rear will continue to convey material forward. The reaction force of the tension will cause the movable roller 3 to overcome the pulling force applied by the counterweight mechanism and slide through the sliding mechanism, thereby generating displacement and being detected by the detector, which can be a displacement sensor. At this time, the looper tower 1 will release the colored aluminum so that the tension is less than the pulling force of the counterweight mechanism, thereby causing the movable roller 3 to reset under the pull of the counterweight mechanism. After resetting, the looper tower 1 stops working. This process is repeated to control the looper tower 1. When the tension decreases, the movable roller 3 will be pulled by the counterweight mechanism and displaced, thereby being detected by the detector, and the looper tower 1 will be controlled to retract the colored aluminum, so that the tension is greater than the pulling force of the counterweight mechanism, thereby driving the movable roller 3 to reset. In this way, the automatic control of the looper tower 1 is achieved.

[0036] Two sets of sliding mechanisms are provided. The two ends of the movable roller 3 are slidably connected to the fixed frame 2 via two sets of sliding mechanisms. Each set of sliding mechanisms includes a base 5, a slider 6, and a guide rod 7. The guide rod 7 is fixedly connected to the base 5, the slider 6 is slidably connected to the guide rod 7, and the slider 6 is rotatably connected to the movable roller 3. A counterweight mechanism is connected to the slider 6. The cooperation between the guide rod 7 and the slider 6 ensures stable support at both ends of the movable roller 3, allowing for stable sliding and preventing the two ends of the movable roller 3 from deviating from each other.

[0037] The counterweight mechanism includes a pull rope 8, a counterweight cylinder 9, a counterweight block 10, and a guide cylinder 11. The guide cylinder 11 is fixedly connected to the fixed frame 2. The counterweight cylinder 9 is sleeved on the outside of the guide cylinder 11 and is slidably connected to the guide cylinder 11. The counterweight block 10 is placed inside the counterweight cylinder 9. One end of the pull rope 8 is fixedly connected to the bottom of the counterweight cylinder 9, and the other end of the pull rope 8 is connected to the movable roller 3. By placing the counterweight block 10 inside the counterweight cylinder 9 and connecting the counterweight cylinder 9 to the movable roller 3 through the pull rope 8, a constant pulling force can be applied to the movable roller 3 using the weight of the counterweight block 10. This ensures that the aluminum alloy is always under constant tension, allowing for rapid displacement when tension changes. The guide cylinder 11 guides the counterweight cylinder 9 to slide, preventing it from swinging and causing danger.

[0038] The counterweight 10 is provided in several parts, and the fixing frame 2 is provided with an adjustment mechanism for adjusting the number of counterweights 10 in the counterweight cylinder 9. By providing several counterweights 10, different tension requirements can be accommodated by adjusting the number of counterweights 10.

[0039] The adjustment mechanism includes a storage box 12 for storing counterweights 10, a pushing mechanism for pushing counterweights 10 from the storage box 12 into the counterweight cylinder 9, an ejection mechanism for pushing counterweights 10 from the counterweight cylinder 9 to the inlet of the storage box 12, and a pushing mechanism for pushing counterweights 10 from the counterweight cylinder 9 into the storage box 12. The storage box 12 is fixedly connected to the fixing frame 2, and the outlet of the storage box 12 is connected to the guide cylinder 11. Excess counterweights are placed in the storage box 12. When weight needs to be increased, the pushing mechanism pushes the counterweights 10 one by one into the counterweight cylinder 9. When weight needs to be reduced, the ejection mechanism pushes all the counterweights to the top of the guide cylinder 11, and then the pushing mechanism pushes the uppermost counterweight 10 into the storage box 12. Each time a counterweight 10 is pushed in, the ejection mechanism causes all the counterweights 10 to rise a certain distance.

[0040] Each pushing mechanism includes a cylinder 13 and a pushing member 14. The pushing member 14 is slidably connected to the storage box 12 and abuts against the counterweight 10. The cylinder 13 is fixedly connected to the fixed frame 2, and the output rod of the cylinder 13 is drively connected to the pushing member 14. The extension and retraction of the cylinder 13 drives the pushing member 14 to slide, thereby pushing the counterweight 10 into the counterweight cylinder 9. Before the pushing mechanism pushes the counterweight 10 into the storage box 12, the pushing member 14 slides backward to make room.

[0041] The ejection mechanism includes a top plate 16 and a second cylinder 15. The top plate 16 is disposed inside the counterweight cylinder 9 and abuts against the bottom of the counterweight block 10 located at the bottom of the counterweight cylinder 9. The second cylinder 15 is fixedly connected to the counterweight cylinder 9, and the output rod of the second cylinder 15 is drivenly connected to the top plate 16. The extension and retraction of the second cylinder 15 drives the top plate 16 to slide, so that the top plate 16 can drive all the counterweight blocks 10 to move together. During adjustment, all the counterweight blocks are moved to the desired position, and after adjustment, all the counterweight blocks 10 are reset.

[0042] The pushing mechanism includes a pushing component 17 and a cylinder 18. The pushing component 17 is slidably connected to the guide tube 11 and is aligned with the entrance of the storage box 12. The cylinder 18 is fixedly connected to the fixing frame 2, and the output rod of the cylinder 18 is drivenly connected to the pushing component 17. The extension and retraction of the cylinder 18 drives the pushing component 17 to reciprocate. Each reciprocating slide pushes a counterweight 10 into the storage box 12.

[0043] The fixed frame 2 is equipped with a balancing mechanism for balancing the weight of the counterweight cylinder 9, cylinder 15, and top plate 16. The balancing mechanism includes a pull rope 19 and a balance block 20. The two ends of the pull rope 19 are connected to the movable roller 3 and the balance block 20, respectively. By using the pull rope 19 and the balance block 20, force can be applied from the other side of the movable roller 3, thereby offsetting the weight other than the counterweight 10. This makes the pulling force applied to the movable roller 3 equal to the weight of all the counterweights 10, thus making adjustment easier.

[0044] Both ends of the counterweight 10 are chamfered 21. The chamfers 21 at both ends of the counterweight 10 make it easier to store the counterweight 10 in the storage box 12 or the counterweight cylinder 9.

[0045] It should be noted that many specific details have been set forth in the above description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

Claims

1. A looper device for a color aluminum production line, comprising a looper tower (1), wherein the looper tower (1) includes a support frame, characterized in that: The support frame is equipped with a control device (22) for controlling the loading and unloading of colored aluminum in the loop tower (1). The control device (22) includes a fixed frame (2), a movable roller (3), and two reversing rollers (4). The two reversing rollers (4) are respectively arranged on both sides of the movable roller (3). The movable roller (3) is slidably connected to the fixed frame (2) through a sliding mechanism. The movable roller (3) and the two reversing rollers (4) are rotatably connected to the fixed frame (2). The fixed frame (2) is equipped with a counterweight mechanism to pull the movable roller (3) to one side. The fixed frame (2) is equipped with a detector (23) for detecting the displacement of the movable roller (3). Under normal conditions, the tension of the colored aluminum is balanced with the pulling force of the counterweight mechanism on the movable roller (3); When the colored aluminum is no longer fed into the looper tower (1), the tension of the colored aluminum will increase. The reaction force of the tension will cause the movable roller (3) to overcome the pulling force applied by the counterweight mechanism and slide through the sliding mechanism, thereby generating displacement and being detected by the detector (23). At this time, the looper tower (1) will release the colored aluminum so that the tension is less than the pulling force of the counterweight mechanism, thereby causing the movable roller (3) to reset under the pull of the counterweight mechanism. When the tension of the colored aluminum decreases, the movable roller (3) will be pulled and displaced by the counterweight mechanism, and thus detected by the detector (23), which controls the looper tower (1) to retract the colored aluminum, so that the tension is greater than the pulling force of the counterweight mechanism, thereby driving the movable roller (3) to reset.

2. The looper device for the color aluminum production line according to claim 1, characterized in that: The sliding mechanism is provided in two sets. The two ends of the movable roller (3) are slidably connected to the fixed frame (2) through the two sets of sliding mechanisms respectively. Each set of sliding mechanisms includes a base (5), a slider (6) and a guide rod (7). The guide rod (7) is fixedly connected to the base (5). The slider (6) is slidably connected to the guide rod (7). The slider (6) is rotatably connected to the movable roller (3). The counterweight mechanism is connected to the slider (6).

3. The looper device for the color aluminum production line according to claim 1, characterized in that: The counterweight mechanism includes a pull rope (8), a counterweight cylinder (9), a counterweight block (10), and a guide cylinder (11). The guide cylinder (11) is fixedly connected to the fixed frame (2). The counterweight cylinder (9) is sleeved on the outside of the guide cylinder (11), and the counterweight cylinder (9) is slidably connected to the guide cylinder (11). The counterweight block (10) is disposed inside the counterweight cylinder (9). One end of the pull rope (8) is fixedly connected to the bottom of the counterweight cylinder (9), and the other end of the pull rope (8) is connected to the movable roller (3).

4. The looper device for the color aluminum production line according to claim 3, characterized in that: The counterweight (10) is provided in a plurality of units, and the fixing frame (2) is provided with an adjustment mechanism for adjusting the number of counterweights (10) in the counterweight cylinder (9).

5. The looper device for the color aluminum production line according to claim 4, characterized in that: The adjustment mechanism includes a storage box (12) for storing counterweights (10), a pushing mechanism for pushing the counterweights (10) from the storage box (12) into the counterweight cylinder (9), an ejection mechanism for pushing the counterweights (10) in the counterweight cylinder (9) to the inlet of the storage box (12), and a pushing mechanism for pushing the counterweights (10) from the counterweight cylinder (9) into the storage box (12). The storage box (12) is fixedly connected to the fixing frame (2), and the outlet of the storage box (12) is connected to the guide cylinder (11).

6. The looper device for the color aluminum production line according to claim 5, characterized in that: The pushing mechanism includes a cylinder (13) and a pushing member (14). The pushing member (14) is slidably connected to the storage box (12). The pushing member (14) abuts against the counterweight (10). The cylinder (13) is fixedly connected to the fixed frame (2). The output rod of the cylinder (13) is connected to the pushing member (14) in a transmission manner.

7. The looper device for the color aluminum production line according to claim 5, characterized in that: The ejection mechanism includes a top plate (16) and a second cylinder (15). The top plate (16) is disposed inside the counterweight cylinder (9). The top plate (16) abuts against the bottom of the counterweight block (10) located at the bottom of the counterweight cylinder (9). The second cylinder (15) is fixedly connected to the counterweight cylinder (9). The output rod of the second cylinder (15) is connected to the top plate (16) in a transmission manner.

8. The looper device for the color aluminum production line according to claim 5, characterized in that: The pushing mechanism includes a pushing component (17) and a cylinder (18). The pushing component (17) is slidably connected to the guide tube (11). The pushing component (17) is aligned with the entrance of the storage box (12). The cylinder (18) is fixedly connected to the fixing frame (2). The output rod of the cylinder (18) is drivenly connected to the pushing component (17).

9. The looper device for the color aluminum production line according to claim 7, characterized in that: The fixed frame (2) is provided with a balancing mechanism for balancing the weight of the counterweight cylinder (9), the cylinder (15) and the top plate (16). The balancing mechanism includes a pull rope (19) and a balance block (20). The two ends of the pull rope (19) are connected to the movable roller (3) and the balance block (20) respectively.

10. The looper device for the color aluminum production line according to claim 3, characterized in that: Both ends of the counterweight (10) are chamfered (21).

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