Ground-Type Uncoiler

Abstract

The present invention relates to a ground-type uncoiler that can roll a coil of wire on the ground and conveniently place it on a rotating support plate. Since the rotating support plate is installed on the ground, a worker can roll the coil of wire on the floor and conveniently place it on the rotating support plate without using a forklift, etc. Furthermore, since the reinforcing flange, the central shaft, and the balance nut are combined to firmly support the rotating support plate and the rotating shaft, the rotating support plate and the rotating shaft are prevented from tilting or being damaged by eccentric loads caused by the step difference between the base plate and the rotating support plate when rolling the coil to one side of the rotating support plate, or by eccentric loads caused by the misalignment of the center between the rotating support plate and the loaded coil after loading.

Description

Technology Field

[0001] The present invention relates to a ground-type uncoiler, and more specifically, to a ground-type uncoiler that can roll a coil of wire on the ground and conveniently place it on a rotating support plate. Background Technology

[0002] As is well known, an uncoiler is a device for unwinding wire wound into a coil, and it places the coil on a rotating core rod, pulls out one end of the outer circumference, and feeds the end to a forming machine while rotating the coil body to straighten it.

[0003] As prior art related to an uncoiler, Korean Published Patent No. 10-2018-0102984 (publication date September 18, 2018) 'mild steel wire rod feeding device for injection molding machine' is disclosed.

[0004] The prior art is characterized by the following: “a support member that supports a mild steel wire and whose ends are connected to one another; a support base that is coupled to the lower end of the mild steel wire and has a rectangular shape; a rotating shaft coupled to the center of the support base and provided in a direction perpendicular to the ground; an inner cylinder and an outer cylinder configured inside the rotating shaft; a lower support member that supports the rotating shaft; a footrest coupled to the side of the lower support member to automatically lower the inner cylinder; a horizontal control unit installed on another side of the lower support member; and a speed sensor, a high-pressure washer, a preheating device, and a return roller configured inside the horizontal control unit.”

[0005] However, in the conventional technology, since the support for the mild steel wire rod is positioned at a certain height from the ground by means of a rotating shaft, a footrest, and a lower support, there was the inconvenience of having to use a forklift or the like to lift and mount a coil of mild steel wire rod weighing tens to hundreds of kilograms onto the support.

[0006] In addition, the conventional technology had a problem in that the worker had to adjust the connector connecting the support and the support base to fit the circumference of the coil wound with mild steel wire, which made the process of loosening and tightening it every time cumbersome, and the upper ends of the support could not be joined together to adjust the size to fit the circumference of the coil. Prior art literature

[0007] Republic of Korea Published Patent No. 10-2018-0102984 (Published September 18, 2018) The problem to be solved

[0008] The present invention has been devised to solve the conventional problems described above, and the objective of the present invention is to provide a ground-type uncoiler that can roll a coil of wire on the ground and conveniently place it on a rotating support plate. means of solving the problem

[0009] To achieve the above objective, the present invention is a ground-type uncoiler that rotates a coil wound with wire and straightens its end to supply it to a forming machine, comprising: a base plate that is seated on the ground and has a vertical central axis; a rotating shaft that rotates by power, having a rotating boss rotatably coupled to the central axis of the base plate and a boss flange connected to the lower outer circumference of the rotating boss; a rotating support plate that supports the coil and has a guide hub rotatably coupled to the outer circumference of the rotating shaft; a friction disc interposed between the guide hub and the boss flange; a balance nut formed in the shape of a disc larger than the diameter of the rotating boss and coupled to the upper outer circumference of the central axis so that its lower surface does not contact the upper surface of the guide hub; a plurality of guide rails radially installed from the center of the guide hub on the upper surface of the rotating support plate; and a mounting rod that is slidably coupled to each of the plurality of guide rails to support the inner diameter of the coil.

[0010] Here, the central axis is formed at the center of the upper surface of the base plate, and a reinforcing flange is provided at the lower outer circumference of the central axis to rotatably support the lower part of the boss flange.

[0011] In addition, a bearing is attached to the outer circumference of the reinforcing flange, and the bottom surface of the boss flange is placed on top of the bearing.

[0012] In the present invention, a support rim having a height lower than that of the guide rail may be provided around the perimeter of the rotating support plate.

[0013] At this time, an inclined guide surface formed to be inclined downward may be provided on the outer end of the guide rail. Effects of the invention

[0014] According to the present invention implemented by the above-described solution, since the rotating support plate is installed on the ground, a worker can conveniently place a coil of wire wound on the rotating support plate by rolling it on the floor without using a forklift, and since the reinforcing flange, center shaft, and balance nut are combined to firmly support the rotating support plate and the rotating shaft, there is an effect of preventing the rotating support plate and the rotating shaft from tilting or being damaged by eccentric loads caused by the step difference between the base plate and the rotating support plate when rolling the coil to one side of the rotating support plate, or by eccentric loads that may occur due to the misalignment of the center between the rotating support plate and the loaded coil after loading.

[0015] In addition, according to the present invention implemented by the above-described solution, the mounting rod slides along the guide rail to correspond to the diameter of the coil, thereby allowing for convenient position adjustment; and since an inclined guide surface is formed on the outer end of the guide rail, the height of the support rim can be formed lower than that of the guide rail, allowing the coil to be conveniently lifted onto the guide rail without interference; furthermore, the wire of the coil, which is nearly used and has become loose, slides down along the inclined guide surface of the guide rail and is stopped by the support rim, thereby preventing it from escaping to the outside of the rotating support plate. Brief explanation of the drawing

[0016] FIG. 1 is a front view showing the overall external appearance according to an embodiment of the present invention. FIG. 2 is a perspective view showing a key part according to an embodiment of the present invention. Figure 3 is a cross-sectional view along line AA of Figure 2. Figure 4 is an enlarged view showing part 'B' of Figure 3. Fig. 5 is an exploded view showing the configuration of Fig. 4. Specific details for implementing the invention

[0017] In order to fully understand the present invention, preferred embodiments of the present invention will be described below with reference to the attached drawings.

[0018] Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments described in detail below. These embodiments are provided to more fully explain the present invention to those with average knowledge in the art.

[0019] Accordingly, it should be noted that the shapes of components depicted in the drawings may be exaggerated to emphasize clearer explanations, and that identical members may be shown with the same reference numeral in each drawing.

[0020] In addition, detailed descriptions of known functions and configurations that are deemed to unnecessarily obscure the essence of the invention may be omitted.

[0021] A ground-type uncoiler according to an embodiment of the present invention includes a base plate (100), a rotation axis (200), a rotation support plate (300), a guide rail (500), and a mounting rod (600).

[0022] Referring to FIG. 1, a coil (10) wound with a wire (11) is mounted on a plurality of mounting rods (600) so as to be supported on a rotating support plate (300), and the ends of the wire (11) are straightened by the rotation of the rotating support plate (300) and supplied to a forming machine.

[0023] The base plate (100) is placed on the ground, i.e., the floor (20), and forms the base of the ground-type uncoiler according to the present invention.

[0024] Referring to FIGS. 1 and 2, the base plate (100) is formed in the shape of a flat rectangular plate. On one side of the base plate (100), a motor (140) for rotating a rotation axis (200), a controller (150) for controlling the operation of the motor (140), and an operating lever (160) are installed.

[0025] Referring to FIGS. 4 and FIGS. 5, a vertical central axis (130) is provided at the center of the upper surface of the base plate (100).

[0026] A reinforcing flange (120) is provided at the lower outer circumference of the central axis (130) to rotatably support the lower part of the boss flange (220), and a bearing (BR) is coupled to the outer circumference of the reinforcing flange (120).

[0027] The bearing (BR) can be implemented as a thrust ball bearing that supports the load acting on the rotation axis (200).

[0028] Screw threads are formed on the upper outer surface of the central axis (130) so that a balance nut (180) is screw-coupled. On the upper surface of the balance nut (180), a plurality of tool grooves (not shown) can be formed at predetermined intervals along the circumferential direction so that a tool for tightening the balance nut (180) can be fastened.

[0029] Here, the balance nut (180) is formed in the shape of a disc larger than the diameter of the rotating boss (210) and is connected to the central axis (130) so that the lower surface of the balance nut (180) does not come into contact with the upper surface of the guide hub (320) under normal circumstances, but when the guide hub (320) tilts, the lower surface of the balance nut (180) supports the upper surface of the guide hub (320) to maintain the rotational balance of the guide hub (320) or prevent it from coming off.

[0030] To elaborate, the aforementioned reinforcing flange (120), central shaft (130), and balance nut (180) form a structure that firmly holds the rotating support plate (300) and the rotating shaft (200) so that they do not tilt or get damaged due to an eccentric load caused by the difference in height between the base plate (100) and the rotating support plate (300) when rolling a coil (10) of tens to hundreds of kilograms and loading it onto one side of the rotating support plate (300), or an eccentric load caused by the misalignment of the center between the rotating support plate (300) and the loaded coil (10) after loading.

[0031] Meanwhile, a tap hole (131) is formed in the center of the upper surface of the central axis (130), and a cap bolt (172) for fixing the end cap (170) is screw-coupled thereto.

[0032] Here, the end cap (170) is formed in the shape of a disc larger than the diameter of the rotating boss (210) and functions to finish the central axis (130) and the balance nut (180) so that they are not exposed. A counter boring (171) is machined in the center of the end cap (170) so that a cap bolt (172) that is screw-coupled to the central axis (130) is seated thereon.

[0033] The rotation axis (200) is rotatably coupled to the central axis (130) of the base plate (100) and rotates by a motor (140).

[0034] Referring to FIGS. 4 and 5, the rotation shaft (200) includes a rotation boss (210) rotatably coupled to a central shaft (130), a boss flange (220) provided at the lower outer circumference of the rotation boss (210) and acting as a load-bearing force corresponding to the load of the rotation support plate (300), and a sprocket (230) provided at the outer circumference of the boss flange (220) and rotated by power.

[0035] The rotating boss (210) has a bore (211) formed in its inner center to form a thick thickness and is rotatably coupled to the outer circumference of the central axis (130).

[0036] The boss flange (220) is formed in the shape of a disc and is integrally provided at the lower outer circumference of the rotating boss (210). A friction groove (221) is formed along the circumferential direction on the upper surface of the boss flange (220) to increase the contact area where the bottom surface of the friction disc is frictionally contacted. The bottom surface of the boss flange (220) is placed on the upper part of the bearing (BR) and is coupled.

[0037] The sprocket (230) is integrally provided on the outer circumference of the boss flange (220) and rotates the rotating boss (210) and the boss flange (220) together by the power of the motor (140). Referring to FIG. 1, the sprocket (230) is rotated by a chain (141) that transmits the power of the motor (140).

[0038] The rotating support plate (300) is coupled to the rotating shaft (200) and supports the coil (10).

[0039] Referring to FIG. 3, the rotational support plate (300) is formed in the shape of a disc. A support rim (310) that is bent upward at a right angle is provided around the circumference of the rotational support plate (300). This support rim (310) functions to support the wire (11) of the coil (10), which has been used up and has become loose, so that it does not detach to the outside of the rotational support plate (300) due to elasticity. Additionally, the support rim (310) ensures that the rotational support plate (300), which is formed in the shape of a disc, has a structure that is resistant to bending deformation.

[0040] Referring to FIGS. 4 and 5, a guide hub (320) having an eye (321) is provided at the center of the rotating support plate (300) and is rotatably coupled to the outer circumference of the rotating shaft (200).

[0041] Optionally, the guide hub (320) can be joined to the center of the rotating support plate (300) by welding.

[0042] A friction disc (400) is interposed between the guide hub (320) and the boss flange (220) to provide frictional force so that the rotational support plate (300) accelerates or decelerates smoothly. The friction disc (400) may be made of a natural or synthetic leather material having a certain elasticity. That is, the friction disc (400) provides elastic frictional force between the rotational shaft (200) and the rotational support plate (300) to transmit the rotational force of the rotational shaft (200) to the rotational support plate (300), thereby inducing the rotational support plate (300) to accelerate or decelerate smoothly.

[0043] Optionally, the friction disc (400) may be made of a natural or synthetic fiber material having a predetermined elasticity.

[0044] The guide rail (500) is installed on the upper surface of the rotating support plate (300) to guide the sliding of the mounting rod (600).

[0045] Referring to FIGS. 2 and 3, the guide rail (500) is formed in the shape of a hollow, square tube with a cross-section of '┏┓' or a square, and is composed of a plurality of guide rails installed radially from the center of the guide hub (320).

[0046] The guide rail (500) can be made up of four pieces that form a 90° angle from the center of the guide hub (320).

[0047] Optionally, the guide rail (500) may be made up of three or five or more members to form the same angle from the center of the guide hub (320).

[0048] A guide slit (510) is formed on the upper surface of the guide rail (500) to extend radially from the center of the guide hub (320).

[0049] The outer end of the guide rail (500) is provided with an inclined guide surface (520) formed to be inclined downward, so that the coil (10) can be rolled on the floor (20) and conveniently placed on the rotating support plate (300).

[0050] To elaborate, when rolling the coil (10) placed on the floor (20) onto the rotating support plate (300), if the outer end of the guide rail (500) forms a right angle, the coil (10) may be interfered with at the corner, making it difficult to lift onto the guide rail (500). Therefore, the coil (10) can be conveniently rolled onto the guide rail (500) through the incline of the inclined guide surface (520).

[0051] Additionally, the inclined guide surface (520) guides the wire (11) of the coil (10), which has been used up and loosened, to catch on the support rim (310) formed at a lower height than the guide rail (500) when it attempts to escape to the outside of the rotating support plate (300) due to elasticity. That is, if the height of the support rim (310) is formed higher than that of the guide rail (500), a problem arises in that it is difficult to raise the coil (10) over the support rim (310) and onto the guide rail (500). Therefore, instead of forming the height of the support rim (310) lower than that of the guide rail (500), an inclined guide surface (520) facing the support rim (310) is formed on the outer end of the guide rail (500) so that the wire (11) of the coil (10), which is almost used up and loosened, is guided to slide down along the inclined guide surface (520) of the guide rail (500) and catch on the support rim (310).

[0052] The mounting rod (600) is slidably coupled to the guide rail (500) to support the inner diameter of the coil (10).

[0053] Referring to FIGS. 1 and 2, the mounting rod (600) is formed in the shape of a vertically long rod and is connected to each of the guide rails (500). The upper end of the mounting rod (600) is bent outwardly at an angle to guide the supply of the wire (11). A slider (610) is provided at the lower end of the mounting rod (600) and is slidably connected to the guide slit (510) of the guide rail (500). The slider (610) is fixed to the guide slit (510) by a fixing member.

[0054] Referring to FIG. 3, the fixing member is implemented with a fixing plate (620) and a fixing bolt (630) that are coupled to fix the slider (610) to the guide slit (510). The fixing plate (620) is positioned on the upper surface of the guide rail (500) to correspond to the slider (610), and the fixing bolt (630) is screwed through the fixing plate (620) to the slider (610). That is, the fixing bolt (630) is loosened when sliding the slider (610) along the guide slit (510), and the fixing bolt (630) is tightened when fixing the slider (610) to the guide rail (500).

[0055] The operation of the embodiment of the present invention configured as described above will be explained in detail with reference to the attached drawings as follows.

[0056] First, when the fixing bolt (630) screwed into the slider (610) is loosened, the mounting rod (600) becomes capable of sliding freely along the guide slit (510).

[0057] Next, when a worker holds and sets up the coil (10) that has been transported to the floor (20) so as to be close to the base plate (100) and rolls it toward one side of the circumference of the rotating support plate (300), the coil (10) can be easily lifted onto the rotating support plate (300).

[0058] Next, the coil (10) is raised to the upper surface of the guide rail (500) and moved so as to align with the center of the rotation axis (200), then the mounting rod (600) is slid along the guide slit (510) to support the inner diameter of the coil (10), and then the mounting rod (600) is fixed to the guide rail (500) by tightening the fixing bolt (630).

[0059] Afterwards, when the controller (150) and the operating lever (160) are operated, the power of the motor (140) is transmitted to the sprocket (230) through the chain (141), causing the rotation shaft (200) to rotate, and as a result, the end of the wire (11) is straightened as shown in FIG. 1 and supplied to the forming machine.

[0060] According to the embodiment of the present invention described above, since the rotating support plate (300) is installed on the ground, a worker can conveniently place the coil (10) wound with wire (11) on the rotating support plate (300) by rolling it on the floor (20) without using a forklift, and since the reinforcing flange (120), the central shaft (130), and the balance nut (180) are combined to firmly support the rotating support plate (300) and the rotating shaft (200), there is an advantage that the rotating support plate (300) and the rotating shaft (200) are not tilted or damaged by the eccentric load caused by the step difference between the base plate (100) and the rotating support plate (300) when rolling the coil (10) to load it on one side of the rotating support plate (300), or by the eccentric load that may occur due to the misalignment of the center between the rotating support plate (300) and the loaded coil (10) after loading.

[0061] In addition, according to the embodiment of the present invention described above, the mounting rod (600) slides along the guide rail (500) to match the diameter of the coil (10), so the position can be conveniently adjusted. Furthermore, since an inclined guide surface (520) is formed on the outer end of the guide rail (500), the height of the support rim (310) can be formed lower than that of the guide rail (500), so the coil (10) can be conveniently raised over the guide rail (500) without interference.

[0062] In addition, according to the embodiment of the present invention described above, the wire (11) of the coil (10), which has been used up and is loosened, travels down along the inclined guide surface (520) of the guide rail (500) and is stopped by the support rim (310), thereby preventing it from deviating to the outside of the rotating support plate (300), which is an advantage.

[0063] The embodiments of the present invention described above are merely illustrative, and those skilled in the art will readily understand that various modifications and equivalent alternative embodiments are possible therefrom.

[0064] Therefore, it can be well understood that the present invention is not limited only to the forms mentioned in the detailed description above.

[0065] Accordingly, the true scope of technical protection of the present invention should be determined by the technical concept of the appended claims, and the present invention should be understood to include all variations, equivalents, and substitutions within the scope of the technical concept defined by the appended claims. Explanation of the symbols

[0066] 10 : Coil 11 : Wire 20 : Floor 100 : Base plate 130 : Center axis 170 : End cap 180 : Balance nut 200 : Rotating shaft 210 : Rotating Boss 220 : Boss Flange 300 : Rotating support plate 310 : Support rim 400 : Friction disc 500 : Guide rail 600 : Mounting rod BR : Bearing

Claims

Claim 1 A ground-type uncoiler that rotates a coil wound with wire and straightens its end to supply it to a forming machine, comprising: a base plate that rests on the ground and has a vertical central axis; a rotating shaft that rotates by power, having a rotating boss rotatably coupled to the central axis of the base plate and a boss flange connected to the lower outer circumference of the rotating boss; a rotating support plate that supports the coil and has a guide hub rotatably coupled to the outer circumference of the rotating shaft; a friction disc interposed between the guide hub and the boss flange; a balance nut formed in a disc shape larger than the diameter of the rotating boss and coupled to the upper outer circumference of the central axis so that its lower surface does not contact the upper surface of the guide hub; and a plurality of guide rails installed radially from the center of the guide hub on the upper surface of the rotating support plate. A ground-type uncoiler comprising: a mounting rod that is slidably coupled to each of the plurality of guide rails and supports the inner diameter of the coil; wherein a support rim having a lower height than the guide rail is provided around the circumference of the rotational support plate, and an inclined guide surface formed downwardly inclined is provided at the outer end of the guide rail. Claim 2 A ground-type uncoiler according to claim 1, characterized in that the central axis is formed at the center of the upper surface of the base plate, and a reinforcing flange is provided at the lower outer circumference of the central axis to rotatably support the lower part of the boss flange. Claim 3 A ground-type uncoiler according to claim 2, characterized in that a bearing is coupled to the outer circumference of the reinforcing flange, and the bottom surface of the boss flange is placed on the upper part of the bearing. Claim 4 delete Claim 5 delete

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