JPH0577175U - Spool for winding metal wire - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a spool for winding a metal wire rod that can automatically wind a wire rod in an aligned winding state. A metal wire winding spool having a cylindrical body and flanges provided on both sides of the body, and having a slot opening along a flange side surface in a circumferential direction of the body, The guide groove extends from the bottom to the surface of the body along the circumferential flange of the body around which the metal wire is wound, and has a guide groove having a diameter of 5 times or more the diameter of the wire.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a metal wire rod spool for fixing a tip of a metal wire rod such as a welding wire to a spool and winding the metal wire rod.

[0002]

[Prior Art]

 Metal wires such as welding wires with wire diameters of 0.8 to 2.4 mm are automatically wound up on spools for easy transportation and processing. As shown in FIG. 5, such a spool for winding a metal wire comprises a cylindrical body 2 and flanges 3 provided on both sides of the body 2. Further, the body 2 is provided with a slot 5 extending in the circumferential direction and opening along the flange side surface 4. In order to wind the wire rod 6 on the spool 1, first, the tip of the wire rod 6 is inserted into the slot 5, bent and fixed to the spool 1. Then, the spool 1 is rotated to wind the wire 6 into a plurality of layers. In order to wind the wire rod on the spool regularly and compactly, the wire rods adjacent to each other on the left and right of the same layer (row) adhere to each other, and the wire rods in the upper layer fit into the grooves formed between the adjacent wire rods in the lower layer. , So-called aligned winding is required. Further, for the aligned winding, the winding for the first one winding must be started so that the wire material for the first winding is in close contact with the flange side surface on the side having the slot.

As a method of winding a wire rod on a spool in the above-described aligned winding state, there is a “winding method of locking the tip of the wire rod on the spool” disclosed in Japanese Patent Publication No. 3-40649. According to this method, one side is opened in contact with the side wall on the cylinder peripheral surface of the spool end portion which is in contact with the side wall (flange), and the locking hole (groove hole) has a V-shaped opening that gradually narrows in the winding direction side. To provide. By inserting a wire rod whose tip is bent in advance into this locking hole and pulling it, the wire rod is caught in the V-shaped opening of this locking hole, and at the same time, the bent portion of the wire is pulled into this locking hole. Hang and lock. Then, rotate the spool to wind up the wire.

[0004]

[Problems to be solved by the device]

 In the case of automatically winding the wire rod, from the point of the bending mechanism of the wire rod tip, the tip of the wire rod is bent 90 ° in the body axis direction along the inner surface of the body and hooked in the slot. .. In addition, the synthetic resin used for the spool is made of polypropylene, which has low hardness, instead of polystyrene because of its price.

In such a case, the above conventional technique has the following problems. That is, the tip of the wire rod is put into the slot and bent 90 ° in the body direction. At this time, since the spool body is soft, the wire rod 6 is caught in the spool body 2 as shown in FIGS. 4 (a) and 4 (b). Even when the spool 3 is rotated and started to be wound, the wire does not move to the tip of the groove 5, and the winding starts from the second or third winding, and the winding does not become an aligned winding state, but becomes irregular winding in the upper layer portion. Further, as shown in FIG. 3A, the bent portion of the wire 6 may be opened by the pulling force at the start of winding before it is caught in the slot 5. When the bent portion is opened in this manner, the winding start portion of the wire 6 is separated from the flange side surface 4 and starts winding from the second or third winding as shown in FIG. It becomes a random winding in the section. Even if this winding start portion starts to be wound from the first winding by the pulling force of the traverser (not shown) in the flange direction, the bending portion 7 is generated by the pulling force and the second winding is formed as shown in FIG. 3 (c). The wire rod 8 comes into contact with the curved portion 7 and is wound into the third roll. Further, as shown in FIG. 3 (d), the curved portion 7 is in a state of being lifted from the body portion 2, and the wire rod is not wound into a fixed position on and after the second layer, but is randomly wound in the upper layer portion.

In any of the above cases, conventionally, the winding start portion of the wire rod is pressed against the flange side with a piece of wood such as rewinding or manually. Therefore, it was difficult to completely automate the winding of the wire. The present invention solves the above problems and provides a spool for winding a metal wire rod that can automatically wind a wire rod in an aligned winding state.

[0007]

[Means for Solving the Problems]

 A spool for winding a metal wire according to the present invention comprises a cylindrical body and flanges provided on both sides of the body, and has a slot opening along the flange side face in the circumferential direction of the body and the slot. A guide groove having a length of 5 times or more of the diameter of the wire rod extending to the surface of the body along the circumferential flange of the body from which the metal wire is wound is provided.

[0008]

[Action]

 The present invention will be described in detail below with reference to the drawings. In the present invention, as shown in FIGS. 1 and 2, since the guide groove 9 extends from the bottom portion 5a of the groove hole 5 along the flange in the circumferential direction of the body 3, as shown in FIG. The front end of 6 is wound along the guide groove 9 so as to be in close contact with the flange. Therefore, even if the tip of the wire 9 is pushed into the spool body 3, the winding does not start from the second or third winding. Even if the bent portion of the wire rod 1 is opened as shown in Fig. 1 (b), the wire rod starts winding so as to come into close contact with the flange along the guide groove 9, so that it is possible to start winding from the second or third roll. Furthermore, the bending portion 7 as shown in FIG. 3 does not occur due to the tension at the beginning of winding.

The length of the guide groove 9 must be 5 times or more the wire diameter. If the length L of the guide groove 9 is less than 5 times the diameter of the wire rod, the guide groove is too short, and the tip of the wire rod may be difficult to fit into the spool body at the beginning of winding the wire rod [Fig. 2 (a), (b )], The bent portion is opened [Fig. 3 (b)], and the bent portion is further opened to form a curved portion by the tensile force of the traverser in the flange direction, and the portion is further lifted [Fig. 3 (c), ( d)] occurs, neither of them can be corrected or corrected by the guide groove, and winding is not performed in the aligned winding state, and irregular winding occurs in the upper layer portion. Therefore, the guide groove 9 has a length L which is five times or more the wire diameter. The upper limit of the guide groove length is not particularly limited, but if it is too long, the wire rod of the second roll may be placed on the wire rod of the first roll, so that it is preferably 20 times or less the diameter of the wire rod. Further, the guide groove 9 has various shapes as shown in FIGS. However, the shape is not limited to these, and any shape may be used as long as the tip of the wire is wound along the guide groove 9 so as to be in close contact with the flange at the beginning of winding the wire.

[0010]

【Example】

 A spool 1 having the shape shown in FIG. 5 is provided with a guide groove 9 having the shape shown in FIG. 2A in the groove hole 5, and the length L of the guide groove 9 is set to each dimension shown in Table 1. Five types of ropylene spools were prototyped. Regarding the size of the spool 1, the outer diameter of the flange 3 was 270 mm, the outer diameter of the body 2 was 148 mm, and the thickness of the body was 3.5 mm. Two coils of YGW11 solid wire of 1.2 mm and 1.6 mm having a wire diameter of 1.2 mm and 1.6 mm defined by JIS Z3312 were automatically wound on each of the above-mentioned spools in an amount of 50 kg (50 kg of wire). After the solid wire was wound on the spool of each test, the number of turbulence occurrences was examined. The results are shown in Table 1.

[0011]

[Table 1]

As is clear from the results shown in Table 1, Test Examples 1 to 3 which are examples of the present invention were extremely satisfactory because no turbulence occurred. In the comparative example, the test example 4 was an example without a guide groove, and 5 coils were randomly wound. In Test Example 5, since the guide groove length with respect to the wire diameter was small, three coils were randomly wound.

[0013]

[Effect of the device]

 As described above, according to the metal wire winding spool of the present invention, the guide groove extends from the bottom of the slot along the circumferential flange of the body, so that the tip of the wire is aligned with the guide groove. And start winding so that it fits tightly to the flange. Therefore, the wire is automatically aligned in the aligned winding state from the beginning to the end without being pushed away from the side of the flange due to the tip of the wire sticking into the trunk, opening of the bent part, or formation of a curved part that causes a curved part. Can be rolled up.

[Brief description of drawings]

FIG. 1A shows an embodiment of the present invention, a sectional view including a guide groove of a spool, and FIG. 1B shows an embodiment of the present invention, which shows a state in which a bent portion of a wire rod is opened. It is a figure.

2 (a), (b), (c) and (d) are plan views showing a guide groove shape example of the present invention, and (e) and (f) are cross-sections showing a guide groove shape example of the present invention. It is a figure.

3A is a cross-sectional view showing a state in which a bent portion of a wire rod is opened in a slot in the prior art, and FIG. 3B is a plan view of FIG. 3A, showing a winding start portion of the wire rod. Shows the state of being separated from the side surface of the flange. (C) is a plan view of (a) and shows a state in which the wire rod of the second roll hits the curved portion and is wound into the third roll. FIG. 3D is a cross-sectional view showing a state in which the bent portion of the wire rod is opened and the curved portion is further lifted in the prior art.

FIG. 4A is a cross-sectional view showing a state in which a bent portion of a wire rod is embedded in a side surface of a slot in a conventional technique, and FIG. 4B is a plan view of FIG. The part is shown separated from the side surface of the flange.

FIG. 5 is a perspective view of the spool when the wire rod is started to be wound.

[Explanation of symbols]

 1 Spool 2 Body 3 Flange 4 Flange Side 5 Groove Hole 6 Wire Rod 7 Curved Part 8 Second Roll Wire Rod 9 Guide Groove l Guide Groove Length

Claims (1)

[Scope of utility model registration request] 1. A spool for winding a metal wire rod, comprising: a cylindrical body and flanges provided on both sides of the body, and a groove for opening a groove along a side surface of the body in a circumferential direction of the body. A spool for winding a metal wire, comprising a guide groove extending to the surface of the body along a flange in the body circumferential direction around which the metal wire is wound from the bottom of the hole, the guide groove having a diameter of 5 times or more the diameter of the wire.