ROLL SHEET METAL UNROLLING DEVICE WITH ADJUSTABLE BRAKING MECHANISM.

TR202613274A2Pending Publication Date: 2026-08-21MEKO METAL SANAYİ & TİCARET ANONİM ŞİRKETİ
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Patent Information

Application Number
TR202613274
Authority / Receiving Office
TR · TR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2026-08-05
Publication Date
2026-08-21

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Abstract

The invention relates to a coil unwinding device (100) comprising a mandrel (120) positioned rotatably on the unwinding body (110) and a rotating shaft (130) associated with the mandrel (120). The device (100) includes a braking device (200) to limit or stop the movement of the rotating shaft (130). The braking device (200) comprises a brake housing (210) rotating with the rotating shaft (130) and having a circumferential friction surface (214), a brake band (220) which at least partially surrounds the brake housing (210) and has a brake pad (223) on its inner surface, a first linkage assembly (230) which positions the first end (221) of the brake band, and a second linkage assembly (240) which applies a pulling force to the second end (222). By turning the manual adjustment element (243), the spring (244) is compressed, the second connecting stud (242) is pulled and the brake pad (223) is pressed against the brake housing (210), thus braking the rotating shaft (130). Figure 1
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Description

1 TARIFF ROLL SHEET METAL UNROLLING MACHINE WITH ADJUSTABLE BRAKING MECHANISM. ARRANGEMENT TECHNICAL FIELD The invention relates to the production of pipes and profiles from rolled sheet metal by roll forming and cold forming. Roll sheet metal unwinding ensures regular and controlled feeding to the slitting lines. It relates to the devices. In particular, the invention concerns the rotating shaft associated with the mandrel carrying the rolled sheet metal. allowing its movement to be restricted or stopped in a controlled manner It relates to coil unwinding devices equipped with braking mechanisms. PREVIOUS TECHNIQUE Coiled sheet metal is used in roll forming, cold forming, pipe and profile production, and sheet metal slitting. It is used as a raw material in production systems such as steel lines. Coiled sheet metal The coil unwinding devices used to feed sheet metal into the production line are generally... a body, a mandrel with freedom of rotation on the body, and the mandrel It includes a shaft that enables it to rotate. The rolled sheet metal is placed on a mandrel. 20 and as the mandrel rotates around its own axis, the rolled sheet metal is gradually unwound It is conveyed to the production line. Especially in high-mass coiled steel, the coiled steel and the mandrel together Due to the rotational inertia it creates, the motion can occur at the desired time and position. It is becoming difficult to stop. Stopping the production line causes the coiled sheet metal to break down. changing or connecting the end of the existing coil of sheet metal with the beginning end of the new coil of sheet metal the mandrel continues to rotate uncontrollably during assembly This can be the case. This situation causes the sheet metal to unintentionally open, and damage to the sheet metal. looseness or positional malfunction can occur, interrupting the production process. 30 this causes it to malfunction and creates a risk to operator safety. is happening. 2 In current applications, drives are used to control rotational motion. motors, gearboxes, hydraulic or pneumatic braking systems, mechanical interlocking Elements and similar mechanisms can be utilized. However, the word Solutions to this issue may require additional drive and control components for the system. This can increase production and maintenance costs or cause sudden failure of moving parts. High impact loads on mechanical components due to locking It can create. In addition, it can be retrofitted to existing coil sheet unwinding devices. Their implementation can be difficult and required for coiled sheet metal of different weights. sufficient allowance for easy and controlled adjustment of braking force. It may not give. 10 In conclusion, all the problems mentioned above require an innovation in the relevant technical field. This has made it necessary to do it. BRIEF DESCRIPTION OF THE INVENTION 15 The present invention aims to eliminate the aforementioned disadvantages and the related technical A roller with an adjustable braking system, designed to bring new advantages to the field. It relates to the sheet metal opening device. One aim of the invention is to counteract the rotational inertia generated by high-mass coiled sheets. in the opposite way, the movement of the mandrel can be controlled at the desired moment. a coil unwinding device that allows for its restriction or stopping to reveal. Another purpose of the invention is to facilitate the changing of coiled sheet metal and the joining of sheet metal ends. Work safety and safety issues arising from the unintentional unwinding of rolled sheet metal. The aim is to develop a coil unwinding device that reduces positioning risks. Another purpose of the invention is to allow the braking force to be easily adjusted by the operator. simple, allowing for adjustment and damping of sudden loads and vibrations. This resulted in a braking device that is robust and applicable to existing opener structures. to place. 3 All the purposes mentioned above and those that will emerge from the detailed explanation below. The present invention is an opener that enables the conveying of rolled sheet metal. Its body has the freedom to rotate around its own axis on the opening body. a roller consisting of a mandrel positioned in this way and a rotating shaft associated with the mandrel It is a sheet metal opening device. Accordingly, the invention is a device that rotates together with a rotating shaft and has 5 on its outer circumference. A brake housing with a circumferential friction surface moves the brake housing in the circumferential direction. a brake band that at least partially surrounds and has brake pads on its inner surface, brake the first linkage assembly that positions the first end of the band and the brake band a second spring-loaded connecting device that applies adjustable tensile force to the second end It includes. Thus, the movement of the rotating shaft is gradually increased by friction. It can be restricted or completely stopped. A feature of a possible design of the invention is that the brake housing is mounted on a rotating shaft. It consists of first and second parts that form two semi-rings around it. Thus, the brake housing can be assembled without the need to completely disassemble the rotating shaft. It can be placed around the rotating shaft. Another possible configuration of the invention features a brake housing and a rotating shaft. The reason is the presence of a wedge between them. This allows the brake housing and the rotating shaft to work together. This ensures that the rotation and braking moment are transferred to the rotating shaft. 20 Another possible configuration of the invention features a metallic brake band. It has a C-shaped structure made of the same material and the brake pad is inside the brake band. It is fixed to the surface. In this way, the effective circumferential dimension of the brake band is changed. The pressure applied by the brake pad to the brake housing is adjustable. 25 Another characteristic of a possible configuration of the invention is the side wall of the opening body. one-piece with two holes through which the first and second connecting studs pass. The presence of a support plate allows the braking forces to be distributed over the side wall. It is transferred over a wider and more homogeneous area. 30 Another possible configuration of the invention features the first end of the brake band. The first one includes the fork joint, geared connection stud, pre-setting element and nut. 4 It is positioned with a connecting mechanism. Thus, the beginning of the brake band The tension and reference position can be pre-set. Another possible configuration of the invention features the second end of the brake band. A manual adjustment element with internal threads and support 5 on a connected threaded stud. There is a spring between the plate and the manual adjustment element. This allows for braking. The force can be adjusted manually, and the force is affected by vibrations and sudden loads. The changes can be dampened. BRIEF DESCRIPTION OF THE FIGURE 10 Figure 1 shows a representative general perspective of the coil sheet unwinding device that is the subject of the invention. The appearance is given. Figure 2 shows the mandrel, rotating shaft and braking mechanism of the coil sheet opening device that is the subject of the invention. A representative detailed perspective view showing the layout of the assembly is provided. Figure 3 shows the placement of the braking device, which is the subject of the invention, on the opening body. A representative detail view is provided to illustrate this. DETAILED DESCRIPTION OF THE INVENTION This detailed explanation of the invention only serves to better understand the subject. This is explained with examples that are directed towards and do not create any limiting effects. Figure 1 shows the general structure of the coil unwinding device, and Figure 2 shows the mandrel and rotary head. The relative positioning of the shaft and braking system is shown in Figure 3, while the braking system is shown in Figure 3. The diagram shows the connection and adjustment configuration on the opening body of the device. The invention relates to the production of pipes and profiles from rolled sheet metal, cold forming, and sheet metal slitting. and similar production lines that can be fed in a regular and controlled manner. The invention relates to at least one coil sheet unwinding device (100). In particular, the invention relates to the coil sheet. during the replacement and joining of sheet metal ends due to the inertial effect of the rolled sheet metal a structure that limits or completely stops its uncontrolled rotation It reveals. The coil unwinding device (100) has components that enable the conveying of the coil. At least one opener body (110) containing the roll sheet is placed in the center of the roll 5 at least one mandrel (120) carrying the sheet and the opening body (110) of the mandrel (120). It contains at least one rotating shaft (130) that enables it to rotate. The opener body (110), Transport of mechanical components of the coil sheet opening device (100) and It forms the fixed structure that provides support. The opener body (110) rotates 10 which allows the shaft (130) to be supported and braking forces to be met. It contains at least one side wall (111). Mandrel (120), the roll of sheet metal or coil of sheet metal placed on it It enables its movement from the center. Mandrel (120), opener body (110) 15 It is positioned. A part of the rotating shaft (130) is connected to the mandrel (120). is connected to the other part inside the opening body (110). It extends. The mandrel (120) and the rotary shaft (130) together perform the rotational motion. They are interconnected in such a way as to enable the roll of sheet metal to be produced. During opening, the mandrel (120) rotates 20 degrees around its own axis together with the rotating shaft (130). It is turning. The subject of the invention is a coil unwinding device (100), the rotational movement of the rotating shaft (130). at least one that allows for its controlled restriction or suspension It includes a braking device (200). The braking device (200) has a rotating shaft (130) 25 at least one brake housing positioned on it and rotating together with the rotating shaft (130) (210), at least one brake housing (210) that encircles at least partially. band (220), a certain on one side of the brake band (220) relative to the opening body (110) at least one primary linkage device (230) and brake that ensures it is held in position at least one second 30 that ensures the band (220) is compressed onto the brake housing (210). It includes a connection assembly (240). The brake housing (210) has at least one first part placed around the rotating shaft (130). (211) and includes at least one second part (212). The first part (211) and the second part 6 (212) to form two half-rings around the rotating shaft (130) It is structured. When the first part (211) and the second part (212) are put together a circular or cylindrical brake housing (210) surrounding the rotating shaft (130) It consists of the first part (211) and the second part (212), with detachable mechanical connection. They can be fixed to each other by way of. The brake housing (210) being two parts, 5 completely through the rotating shaft (130) mandrel (120) or opener body (110) without the need to disassemble the brake housing (210) onto the rotating shaft (130) It allows it to be attached or removed from the rotating shaft (130). Prevention of the brake housing (210) from rotating relative to the rotating shaft (130) and brake housing 10 To ensure that the rotating shaft (130) and the brake housing (210) rotate together, There is at least one wedge (213) between the rotating shaft (130). Wedge (213), The opposite is formed on the rotating shaft (130) and inside the brake housing (210). They can be placed in keyways. Thus, the rotational movement of the rotating shaft (130) The braking force applied to the brake housing (210) rotates 15 Mile (130) is transferred. On the outer circumference of the brake housing (210), the friction force during braking at least one circumferential friction surface that allows its creation (214) The circumferential friction surface (214) is located on the outer circumference of the brake housing (210). It forms a circular or cylindrical surface extending along its length. Circumferential friction surface (214), a continuous surface or multiple successive surfaces in the circumferential direction It can be formed as a large surface area. The brake band (220) covers the circumferential friction surface (214) of the brake housing (210) by at least 25 at least partially surrounding, preferably made of metallic material and C It is a structure that extends in the form of a brake band (220), separated from each other in the circumferential direction. It contains at least one first terminal (221) and at least one second terminal (222). With the first terminal (221) The gap between the second end (222) is the effective circumference of the brake band (220). It allows the measurement to be changed. At least 30 from the ends of the brake band (220). As a result of the tensile force applied to one of them, the brake band (220) is elastically shaped. changing and towards the circumferential friction surface (214) of the brake housing (210). It is approaching. 7 On the inner surface of the brake band (220), between the brake band (220) and the brake housing (210) at least one brake pad (223) positioned between the circumferential friction surface (214) It is located. The brake pad (223), friction coefficient to the brake band (220) and brake higher than its body (210), wear and tear during braking It can be manufactured from a material resistant to the incoming temperature. Brake pad (223), brake 5 It is fixed to the inner surface of the band (220) and moves together with the brake band (220). The mechanical connection of fixing the brake pad (223) to the brake band (220) by riveting, gluing or a combination of these It can be accomplished. When the brake band (220) is loose, the circumferential friction surface between the brake pad (223) (214) pressure between these surfaces is reduced or a working gap is created between these surfaces. Thus, the brake housing (210), the rotary shaft (130) and the mandrel (120) are formed. They can rotate freely around their own axes. The brake band (220) is effective. When the circumference of the brake pad (223) is reduced, the circumference of the brake housing (210) is 15 It is pressed against the friction surface (214). Circumferential friction with the brake pad (223) The friction force generated between the surface (214) of the brake housing (210) and therefore a braking moment against the rotational movement of the rotating shaft (130) It creates. On the side wall (111) of the opener body (110), the braking device (200) side The most effective way to distribute the forces transferred to the wall (111) over a wider area. There is a small support plate (112). Support plate (112) is the first connection. at least one first passage hole (113) which allows the passage of the device (230) and at least one second passage that allows the passage of the second connection device (240) 25 It includes the hole (114). In the preferred configuration, the support plate (112) is the first a single piece containing the first passage hole (113) and the second passage hole (114) It is in the form of a plate. Support plate (112), pulling and compressing that occurs during braking 30 the application of forces directly to a limited area of ​​the side wall (111) This prevents the collapse, bending or local deformation of the side wall (111). change is prevented and braking forces are more on the side wall (111) It is distributed homogeneously. In an alternative configuration, the first passage hole 8 (113) and separate support plates which include the second through hole (114) It is available for use. First connection assembly (230), opening of the first end (221) of the brake band (220). It ensures that it is held in a predetermined position according to its body (110). 5 The first connection assembly (230) is connected to the first end (221) of the brake band (220). The Quran has at least one first fork joint (231), connected with at least one first fork joint (231). on a first link stud (232), first link stud (232) at least one preset element (233) and the first connecting stud (232) are positioned It contains at least one first nut (234) that matches the threads. 10 First fork joint (231), first connection with the first end (221) of the brake band (220). It forms an articulated connection between the stud (232). The articulated connection forms the brake During the tightening or loosening of the band (220), the first end (221) occurs adapting to possible angular position changes and the first link 15 It reduces the bending loads transferred to the stud (232). The first connecting stud (232) is in the form of a shaft with at least one external thread. It is structured. First connecting stud (232), side wall (111) and support It is passed through the first through hole (113) on the plate (112). The first nut is 20 (234), on the exposed threaded section of the first connecting stud (232) It is screwed on. The first nut (234) is on the first connecting stud (232). by changing its position, the first end of the brake band (220) to the opening body (221) position according to (110) and initial tension force applied to the brake band (220) It is adjustable. 25 Pre-setting element (233) between support plate (112) and first nut (234) It is positioned. The preset element (233) is an intermediate ring, bushing or spacer. It can be configured as an element. The preset element (233) is the first nut. (234) overtightening on the first connecting stud (232) 30 to prevent, the distance between the first nut (234) and the support plate (112) to determine and the first end of the brake band (220) (221) is determined beforehand It ensures that it is kept in the reference position. The first linkage system (230), 9 Once adjusted during installation, it remains stable during normal use. It can be left unattended. The second connection assembly (240) is applied to the second end (222) of the brake band (220). the pulling force can be changed by the operator and thus the braking 5 It allows adjustment of the force. The second linkage mechanism (240), brake At least one second fork joint (241) connecting with the second end of the band (220) (222), At least one second connecting stud (242) connected to the second fork joint (241), second At least one manual adjustment element that is threaded and matches the connecting stud (242). (243) and between the support plate (112) and the manual adjustment element (243) 10 It includes at least one arc (244) positioned. Second fork joint (241), second connection with the second end of the brake band (220) (222). It forms a hinged connection between the stud (242). Second fork joint (241) angular movements occurring during the tightening of the brake band (220) 15 adapting and the second connecting stud (242) essentially has its own length This allows it to be subjected to tensile load in that direction. The second connecting stud (242) is in the form of a shaft with at least one external thread. It is being constructed. Second connecting stud (242), side wall (111) and support 20 It is passed through the second passage hole (114) on the plate (112). Manual adjustment element (243) is the inner one that directly matches the outer threads of the second connecting stud (242). It has a gear structure. The manual adjustment element (243) can be adjusted by the operator at any time. winged, butterfly-shaped or that can be turned without the need for an additional hand tool It can be constructed in a structure with handles. 25 The spring (244) can be positioned around the second connecting stud (242). It is in the form of a compression spring. One end of the spring (244) is attached to the support plate (112), the other end It rests on the manual adjustment element (243). The manual adjustment element (243) tightens. When turned in that direction, the manual adjustment element (243) is 30 of the second connecting stud. (242) moves along its teeth and spring (244) towards the support plate (112). It compresses. The reaction force produced by the compressed spring (244) is manually The signal is transmitted from the adjustment element (243) to the second connecting stud (242) and second connecting stud (242) outwards relative to the support plate (112) It is drawing. Pulling the second connecting stud (242) outwards, the second fork joint (241) This movement is transferred from the brake band (220) to the second end (222). This movement 5 As a result, the effective circumferential dimension of the brake band (220) is reduced, brake band (220) approaching the brake housing (210) and circumferential friction of the brake pad (223) It is pressed onto the surface (214). The amount of tightening of the manual adjustment element (243) by changing the pressure applied by the brake pad (223) to the circumferential friction surface (214) the force and the resulting braking moment steplessly 10 It can be adjusted in this way. The spring (244) ensures that the brake pad (223) is continuously and evenly connected to the brake housing (210). It supports the suppression. In addition, the spring (244), from the inertia of the rolled sheet metal, Dynamic 15 caused by vibrations or sudden load changes on the production line. damping the forces and creating a gap in the second linkage assembly (240) It prevents the spring (244) from wearing out over time, as a result of the brake pad (223) wearing out over time. It also allows for accommodating limited size changes that may occur. It provides. Manual adjustment element (243) in the working condition where the coil sheet is opened normally is loosened. Thus the compressive force on the spring (244) and the second linkage The pull applied by the stud (242) to the second end (222) of the brake band (220). The force is reduced between the brake pad (223) and the circumferential friction surface (214). As a result of the pressure being lifted or reduced, the brake housing (210), rotary shaft 25 (130) and mandrel (120) can rotate freely and are controlled into the coil sheet production line. They can be fed in this way. Replacing a coil of sheet metal involves aligning the starting end of the new coil with the ending end of the previous coil. 30 joining with the tip or any other operation where the rotation of the mandrel (120) is not desired During this process, the manual adjustment element (243) is turned in the tightening direction. As a result, the brake band (220) narrows, the brake pad (223) is attached to the brake housing (210) is suppressed and the resulting friction moment causes the movement of the rotating shaft (130). It limits or completely stops the process. Thus, high-mass coiled sheet metal... 11 This prevents the roll of sheet metal from opening uncontrollably due to inertia and keeps it in the desired position. It is kept securely. After the braking operation is completed, the manual adjustment element (243) is loosened. It is possible to increase the circumference of the brake band (220). Brake pad 5 When the pressure on (223) is reduced, the rotating shaft (130) and mandrel (120) are re- It switches to a free rotation state. Thanks to this structure, coiled sheet metal unwinding is possible. the device (100) fast and manual between normal operating condition and braked condition. A transition is provided that does not require any tools. Within the scope of the invention, the braking force is located directly on the rotating shaft (130). Application to the brake housing (210), the inertia caused by heavy rolled sheet metal. It ensures that their forces are met in a controlled manner. First link While the mechanism (230) determines the starting position of the brake band (220), the second spring The coupling mechanism (240) allows for the adjustment of the braking force during operation and 15 It allows for the damping of dynamic loads. The support plate (112) the braking forces are uniformly distributed on the side wall (111) of the opening body (110). This ensures the transfer of power. Thus, the risk of uncontrolled rotation is reduced, and the work is streamlined. safety is increased and sudden changes in the mechanical components of the coil opening device (100) This prevents wear and damage caused by loads. 20 The scope of protection of the invention is set out in the attached claims and is strictly adhered to. The detailed explanation cannot be limited to the examples given. Because in technology... A specialist, without deviating from the main theme of the invention, will do what is described above. It is clear that similar structures can emerge in light of this. 25 12 REFERENCE NUMBERS GIVEN IN THE FIGURE 100 Roll Sheet Metal Unwinding Device 110 Opener Body 111 Side Wall 5 112 Support Plate 113 First Passage Hole 114 Second Passage Hole 120 Mandrel 130 Rotary Shaft 10 200 Braking System 210 Brake Housing 211 Part One 212 Second Part 15 213 Kama 214 Environmental Friction Surfaces 220 Brake Pads 221 First Flight 222 Second Edge 20 223 Brake Pads 230 First Connection System 231 First Fork Joint 232 First Connection Stud 233 Preset Element 25 234 First Nut 240 Second Connection Assembly 241 Second Fork Joint 242 Second Connecting Stud 243 Manual Adjustment Element 30 244 Springs

Claims

13 REQUESTS 1. The invention consists of at least one opening body (110) which allows for the conveyance of rolled sheet metal, rotation around its own axis on the mentioned opener body (110) at least one mandrel (120) and one 5 positioned with freedom of movement part of it is connected to the mandrel (120) and the other part is connected to the opening body (110) a roll sheet metal unwinding machine containing at least one rotating shaft (130) extending into it The device (100) has the feature of; the rotational movement of the rotating shaft (130). at least one braking device for limiting or stopping (200); Within the scope of the mentioned braking device (200), the rotating shaft (130) 10 positioned to rotate around the rotating shaft (130) and at least one circumferential friction surface (214) on its outer circumference brake housing (210), brake housing (210) at least partially in the circumferential direction. containing at least one first end (221) and at least one second end (222) and inside at least one brake pad will come into contact with the circumferential friction surface (214) on its surface 15 (223) at least one brake band (220) found, the first end of the brake band (220) (221) holding the opener body in a predetermined position according to (110) at least one first linkage assembly (230) for the second end of the brake band (220). (222) effective circumferential brake band (220) by applying tensile force. by reducing the size and 20 circumferential friction surface of the brake pad (223). (214) it must contain at least one second linkage device (240) for suppression; the second connection assembly mentioned (240), the second brake band (220) at least one connected to the end (222) and at least one part of which is externally threaded second connecting stud (242), with the teeth of the second connecting stud (242) matching internal gear at least one manual adjustment element (243) and opener body (110) 25 at least one spring (244) positioned between the manual adjustment element (243) including the second connecting stud (242) of the manual adjustment element (243) By turning it in the direction of squeezing, the spring (244) is compressed into the second Pulling the connecting stud (242) outwards effectively removes the brake band (220). Reduction of the circumference of the brake pad (223) and the brake housing (210) 30 configured to press against the circumferential friction surface (214) It is the fact that. 14 2. A roll sheet metal unwinding device (100) according to claim 1, its feature is; brake housing (210) will form two half-rings around the rotating shaft (130) at least one first part (211) and at least one second part (212) that are put together It includes.

3. A coil sheet opening device (100) according to claim 2, its feature is; brake to ensure that the body (210) rotates together with the rotating shaft (130) first part (211) and / or second part of brake housing (210) with rotary shaft (130) It contains at least one wedge (213) positioned between parts (212).

4. A roll sheet metal unwinding device (100) according to claim 1, its feature is; brake band (220), at least partially encircling the brake housing (210) in the circumferential direction, a structure made of metallic material and extending in a C shape It is the fact that.

5. A roll sheet metal opening device (100) according to claim 4, and its feature is; brake pad (223), Mechanical connection, riveting and / or to the inner surface of the brake band (220). It is fixed by gluing.

6. A coil sheet opening device (100) according to claim 1, its feature is; opener 20 at least one side wall (111) and braking device (200) of its body (110) In order to distribute the transferred forces onto the side wall (111), the aforementioned side at least one support plate (112) positioned on the wall (111) It includes.

7. A roll sheet opening device (100) according to claim 6, its feature is; support It is possible to pass the plate (112), the first connection device (230). giving at least one first passage hole (113) and a second connection assembly (240) single piece containing at least one second passage hole (114) allowing passage It is a structure. 30 8. A coil sheet opening device (100) according to claim 7, its feature is; first connection the first end (221) of the device (230) that connects with the brake band (220). at least one first fork joint (231), at least one connected with the first fork joint (231). first connecting stud (232), on the first connecting stud (232) at least one preset element (233) and the first link positioned At least one first nut (234) that matches the stud (232) threaded. It includes.

9. A coil sheet opening device (100) according to claim 8, its feature is; first connection At least part of the stud (232) will be externally threaded and the first pass Configure it to pass through the hole (113) and the preset element (233) is positioned between the support plate (112) and the first nut (234). It is in the form of an intermediate bracelet, bushing, or spacer element. 10 10. A coil sheet opening device (100) according to claim 7, its feature is; second connection second connection of the second end of the brake band (220) (222) of the assembly (240). at least one second fork forming an articulated connection between the stud (242) It contains a joint (241). 15 11. A coil sheet opening device (100) according to claim 10, its feature is; second connection passing through the second passage hole (114) of the bolt (242) and the spring (244), around the second connecting stud (242) with the support plate (112) a compression spring positioned between the manual adjustment element (243) 20 It is the fact that.

12. A roll sheet opening device (100) according to claim 11, its feature is; manual adjustment the inner element (243) that matches the outer threads of the second connecting stud (242) 25, which has a toothed structure and allows it to be turned manually by the operator. It must include at least one grab wing and / or grab handle.