Wire rod winding device

Abstract

To provide a wire rod winding device having a robust structure against the load applied when a wire rod is wound.SOLUTION: A wire rod winding device 1 has a shaft support part 22 attached to a front cover 12, and the shaft support part 22 has a load receiving part 23 passed through a hole part 15 opened in the front cover 12, a shaft support main body part 25 passed through the load receiving part 23 and arranged coaxially with the rotation axis of a winding shaft part 17, ball bearings 27 and roller bearings 28 attached to the outer surface of the shaft support main body part 25 between the load receiving part 23 and the shaft support main body part 25, nuts 31 attached to the outer surface of the shaft support main body part 25 and fastening the ball bearings 27 and the roller bearings 28, and a lid part 32 closing the load receiving part 23 from the outside of the front cover 12. The load received from the wire rod acts on the shaft support main body part 25 via an abutment part 26 in contact with a conical part 21 of the winding shaft part 17, and is received by the ball bearings 27 and the roller bearings 28.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a wire winding device for winding a used wire used for binding packages or the like.

Background Art

[0002] Conventionally, for example, when bundling waste paper or the like, a metal wire is used. As a device used for post-treatment of the used wire, there is, for example, a wire processing device described in Patent Document 1 below (hereinafter referred to as "Literature Known Invention 1"). According to this Literature Known Invention 1, a screw shaft is attached to a processing box, and the wire accommodated in the box is wound around the screw shaft.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in order to wind and store a metal wire in a processing box, it is necessary to bend the wire until it exceeds the yield point. Therefore, when the wire is wound, a large load is applied to the screw shaft. Therefore, the structure of the screw shaft needs to be robust.

[0005] The present invention has been proposed in view of the above circumstances, and an object thereof is to provide a wire winding device having a robust structure against the load when the wire is wound.

Means for Solving the Problems

[0006] In order to achieve the above object, a wire winding device according to the present invention includes a winding shaft portion that is disposed in a wire storage chamber and rotates, a front cover that is a part of the wire storage chamber and is disposed in front of the winding shaft portion in the rotational axis direction, and a shaft support portion that is attached to the front cover and supports the tip portion of the winding shaft portion in the rotational axis direction. The tip portion has a conical portion that tapers toward the tip, and the shaft support portion includes a shaft support main body portion that is disposed coaxially with the rotational axis of the winding shaft portion and is rotatable with respect to the front cover, a contact portion that is connected to the shaft support main body portion and contacts the conical portion, a ball bearing attached between the front cover and the outer surface of the shaft support main body portion, and a roller bearing attached between the front cover and the outer surface of the shaft support main body portion. The ball bearing and the roller bearing support the load applied when a wire is wound around the winding shaft portion that rotates while being supported by the shaft support portion. This is the gist of the present invention.

[0007] The wire winding device according to the present invention has an annular tip protection portion that is attached to the inner surface of the front cover and disposed around the tip portion, and the inner diameter of the tip protection portion is larger than the diameter of the conical portion and smaller than the diameter of the tip portion. This is the gist of the present invention.

[0008] The wire winding device according to the present invention is characterized in that the shaft support portion includes a cylindrical load receiving portion that is passed through a hole opened in the front cover, the shaft support main body portion that is passed through the load receiving portion and attached to the inner surface of the load receiving portion via the ball bearing and the roller bearing that is adjacent to the ball bearing on the side opposite to the contact portion with respect to the ball bearing, a nut that is attached to the outer surface of the shaft support main body portion and retains the inner ring portion of the roller bearing, and a lid portion that closes the hole from the outside of the front cover and retains the outer ring portion of the roller bearing.

Advantages of the Invention

[0009] The wire winding device according to the present invention includes a winding shaft portion that is disposed in a wire storage chamber and rotates, a front cover that is part of the wire storage chamber and is disposed in front of the winding shaft portion in the rotational axis direction, and a shaft support portion that is attached to the front cover and supports the tip portion of the winding shaft portion in the rotational axis direction. The tip portion has a conical portion that tapers toward the tip, the shaft support portion is disposed coaxially with the rotational axis of the winding shaft portion and is rotatable relative to the front cover, and includes a shaft support main body portion, a contact portion that is connected to the shaft support main body portion and contacts the conical portion, a ball bearing attached between the front cover and the outer surface of the shaft support main body portion, and a roller bearing attached between the front cover and the outer surface of the shaft support main body portion. The load applied when the wire is wound around the winding shaft portion supported by the shaft support portion is supported by the ball bearing and the roller bearing. When the wire is wound, the load received from the wire acts on the shaft support main body portion via the contact portion that contacts the conical portion, and is received by the ball bearing and the roller bearing. In particular, the thrust load is dispersed by being received by the roller bearing. Therefore, the present invention is robust against the load when the wire is wound.

[0010] The wire winding device according to the present invention has an annular tip protection portion that is attached to the inner surface of the cover and is disposed around the tip portion. The inner diameter of the tip protection portion is formed to be larger than the diameter of the conical portion and smaller than the diameter of the tip portion. When the wire is wound around the winding shaft portion, the wire elastically and plastically deforms irregularly, so there is a possibility that the wire may gather at the tip portion of the winding shaft portion and interfere with the shaft support portion. However, since the tip portion is surrounded by the tip protection member, interference by the wire can be prevented.

[0011] The wire winding device according to the present invention has a shaft support portion including a cylindrical load receiving portion passed through a hole opened in the front cover, a shaft support main body portion attached to the inner surface of the load receiving portion through a ball bearing and a roller bearing adjacent to the ball bearing on the side opposite to the contact portion with respect to the ball bearing, a nut attached to the outer surface of the shaft support main body portion and fixing the inner ring portion of the roller bearing, and a lid portion closing the hole portion from the outside of the front cover and fixing the outer ring portion of the roller bearing. Therefore, the load can be received by the load receiving portion and the front cover via each bearing. Further, since the support member is detachable from the front cover, maintenance and replacement of each member are possible.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0013] Hereinafter, a wire winding device according to an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show the appearance and the like of the wire winding device 1. In the following, the direction is defined based on the orientation shown in FIGS. 1 and 2.

[0014] As shown in FIGS. 1 to 3, the wire winding device 1 has a processing unit 2 for processing a wire (not shown) and a driving unit 3 for operating the processing unit 2. The wire is, for example, a wire for binding packages such as waste paper or a linear metal product such as barbed wire, and is mainly used ones. The driving unit 3 is composed of a motor 4, a chain belt 5, etc., and transmits power to the processing unit 2.

[0015] The processing unit 2 has a base portion 6 and a wire storage chamber 8 formed on the base portion 6. The base portion 6 has a lifting portion 7, and a wire pressing portion (not shown) connected to the upper part of the lifting portion 7 is disposed in the wire storage chamber 8 through the bottom surface of the wire storage chamber 8.

[0016] The wire storage chamber 8 is a cubic or rectangular box-shaped with an accommodation space formed inside, and has a bottom surface portion 9, four side surface portions 10 connected to the four edges of the bottom surface portion 9, and an upper surface cover portion 11 facing the bottom surface portion 9 above the bottom surface portion 9 and connected to the upper part of the side surface portion 10. A rotatable winding shaft portion 17 is disposed in the wire storage chamber 8.

[0017] The bottom surface portion 9 is penetrated by the wire pressing portion of the base portion 6. The front cover 12 which is the front side of the side surface portion 10 constitutes a part of the wire storage chamber 8 and opens and closes via a hinge portion 14. The front cover 12 is disposed in front of the rotation axis direction of the winding shaft portion 17, and a shaft support portion 22 for supporting the winding shaft portion 17 is attached to the center. The rear surface portion 13 which is the rear side of the side surface portion 10 has the driving unit 3 connected outside the wire storage chamber 8. The center of the rear surface portion 13 has a driving shaft portion 16 penetrating from the driving unit 3 into the wire storage chamber 8. The driving shaft portion 16 is connected to the winding shaft portion 17. The tip portion 18 in the rotation axis direction of the winding shaft portion 17 is supported by the shaft support portion 22. The upper surface cover portion 11 opens and closes.

[0018] The diameter of the winding shaft portion 17 gradually decreases toward the front side in the rotational axis direction. Specifically, the winding shaft portion 17 is formed by arranging a plurality of rod-shaped members 20 annularly on the outer periphery of a columnar winding shaft main body portion 19, and the rod-shaped members 20 extend along the longitudinal direction of the winding shaft main body portion 19. The rod-shaped members 20 are arranged with a gap from the winding shaft main body portion 19 and approach the winding shaft main body portion 19 toward the front side. The rod-shaped members 20 are arranged at substantially equal intervals in the outer peripheral direction of the winding shaft main body portion 19.

[0019] Here, the shaft support portion 22 will be described in detail based on the drawings together with the tip portion 18 of the winding shaft portion 17. In FIG. 4, the periphery of the shaft support portion 22 is shown enlarged.

[0020] As shown in FIG. 4, the tip portion 18 has a conical portion 21 that is connected to the front end of the winding shaft main body portion 19 and tapers toward the tip. Here, the tip portion 18 is the front end of the winding shaft portion 17 and includes the tip of the winding shaft main body portion 19, the tips of the rod-shaped members 20, and the conical portion 21.

[0021] The shaft support portion 22 includes a load receiving portion 23 passed through a hole portion 15 opened in the front cover 12, a shaft support main body portion 25 passed through the load receiving portion 23 and arranged coaxially with the rotational axis of the winding shaft portion 17, ball bearings 27 and roller bearings 28 attached to the outer surface of the shaft support main body portion 25 between the load receiving portion 23 and the shaft support main body portion 25, nuts 31 attached to the outer surface of the shaft support main body portion 25 to retain the ball bearings 27 and the roller bearings 28, and a lid portion 32 that closes the hole portion 15 from the outside of the front cover 12 to block the load receiving portion 23.

[0022] The load receiving portion 23 is cylindrical and has a flange portion 24 at its front end. The flange portion 24 is formed wider than the inner diameter of the load receiving portion 23, is exposed outside the front cover 12, and is fixed to the outer surface of the front cover 12 with bolts 33. The shaft support main body portion 25 is cylindrical, and a contact portion 26 is connected to its rear end. The contact portion 26 is funnel-shaped, projects rearward from the load receiving portion 23, and is disposed in the wire storage chamber 8. The contact portion 26 contacts the conical portion 21 of the winding shaft portion 17. The shaft support main body portion 25 is attached to the inner surface of the load receiving portion 23 via a ball bearing 27 and a roller bearing 28. The ball bearing 27 has a plurality of balls 35 arranged annularly, and is disposed closer to the contact portion 26 on the outer surface of the shaft support main body portion 25. The roller bearing 28 has a plurality of rollers 36 arranged annularly, and is disposed on the front side opposite to the contact portion 26 with respect to the ball bearing 27 and adjacent to the ball bearing 27. The nut 31 is annular and holds the inner ring portion 29 of the roller bearing 28 on the front side of the roller bearing 28. The lid portion 32 is generally plate-shaped, holds the outer ring portion 30 of the roller bearing 28 on the front side of the roller bearing 28, and is fixed to the flange portion 24 of the load receiving portion 23 with bolts 33. There is a gap between the lid portion 32 and the shaft support main body portion 25, and the lid portion 32 does not contact the shaft support main body portion 25.

[0023] With the above-described configuration, the shaft support main body portion 25 is rotatable with respect to the front cover 12 and the load receiving portion 23. Therefore, when the winding shaft portion 17 rotates with the conical portion 21 of the winding shaft portion 17 contacting the contact portion 26 of the shaft support main body portion 25, the shaft support main body portion 25 also rotates.

[0024] An annular tip protection portion 34 is fixed to the inner surface of the front cover 12 around the contact portion 26 of the shaft support main body portion 25. In a state where the conical portion 21 of the winding shaft portion 17 contacts the contact portion 26, the tip protection portion 34 is disposed around the tip portion 18 of the winding shaft portion 17, and the inner diameter of the tip protection portion 34 is larger than the diameter of the conical portion 21 and smaller than the diameter of the tip portion 18. Therefore, the tip portion 18 is covered by the tip protection portion 34.

[0025] Next, the operation of the wire winding device 1 will be described together with the actions and effects.

[0026] In FIGS. 1 to 3, the upper surface lid portion 11 is opened, and the wire is put into the wire storage chamber 8. Before and after the wire is put in, when the drive unit 3 is driven and the drive shaft portion 16 rotates together with the winding shaft portion 17, the tip of the wire is sandwiched between the rod-shaped members 20 of the winding shaft portion 17, serving as the starting point of winding. As the winding shaft portion 17 rotates, the wire is wound around the winding shaft portion 17. Further, as the elevating portion 7 moves up and down, the wire pressing upper portion presses up the wire and presses it against the winding shaft portion 17, and the wire is gradually compressed into a coil shape. At this time, the load received from the wire acts on the shaft support main body portion 25 via the contact portion 26 that contacts the conical portion 21, and is received by the ball bearing 27 and the roller bearing 28. In particular, the thrust load is dispersed by the roller bearing 28 receiving it. Further, the load is received by the load receiving portion 23 and the front cover 12 via the ball bearing 27 and the roller bearing 28. Therefore, it becomes robust against the load when the wire is wound. Also, since the shaft support portion 22 composed of each member is detachable from the front cover 12, maintenance and replacement of each member are possible.

[0027] When the wire is wound around the winding shaft portion 17, it elastically and plastically deforms irregularly. When it gathers at the tip portion 18 of the winding shaft portion 17, there is a possibility of interference between the conical portion 21 of the winding shaft portion 17 and the contact portion 26 of the shaft support portion 22. However, since the tip portion 18 is surrounded by the tip protection portion 34, interference by the wire can be prevented.

[0028] When the winding of the wire is completed and the front cover 12 is opened, the shaft support portion 22 separates from the tip portion 18 of the winding shaft portion 17, and the wire is removed through the tip portion 18. Therefore, the wire can be discarded in a compressed state.

[0029] Note that other embodiments of the present invention do not have a tip protection portion. In another embodiment, there is no load receiving portion, and the shaft support main body portion is directly inserted into the hole portion of the front cover. In the hole portion, each bearing is attached between the front cover and the outer surface of the shaft support main body portion. In another embodiment, the positions of the ball bearing and the roller bearing are reversed. That is, the ball bearing is disposed on the front side opposite to the contact portion with respect to the roller bearing and is adjacent to the roller bearing.

[0030] As described above, the embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments. And the present invention can be variously designed without departing from the matters described in the claims.

Explanation of Reference Numerals

[0031] 1 Wire winding device 2 Processing unit 3 Driving unit 4 Motor 5 Chain belt 6 Base portion 7 Lifting portion 8 Wire storage chamber 9 Bottom surface portion 10 Side surface portion 11 Upper cover portion 12 Front cover 13 Rear surface portion 14 Hinge portion 15 Hole portion 16 Driving shaft portion 17 Winding shaft portion 18 Tip portion 19 Winding shaft main body portion 20 Rod-shaped member 21 Conical portion 22 Shaft support portion 23 Load receiving portion 24 Flange portion 25 Shaft support main body portion 26 Contact portion 27 Ball bearing 28 Roller bearing 29 Inner ring portion 30 Outer ring part 31 Nut 32 Cover part 33 Bolt 34 Tip protection part 35 Ball 36 Roller

Claims

1. A take-up shaft portion that is disposed in a wire storage chamber and rotates, A front cover that is part of the wire storage chamber and is disposed in front of the take-up shaft portion in the rotational axis direction of the take-up shaft portion, An axis support portion that is attached to the front cover and supports the tip portion of the take-up shaft portion in the rotational axis direction of the take-up shaft portion, The tip portion has a conical portion that tapers toward the tip, The axis support portion, An axis support main body portion that is disposed coaxially with the rotational axis of the take-up shaft portion and is rotatable with respect to the front cover, A contact portion that is connected to the axis support main body portion and contacts the conical portion, A ball bearing attached between the front cover and the outer surface of the axis support main body portion, A roller bearing attached between the front cover and the outer surface of the axis support main body portion, When a wire is wound around the take-up shaft portion that rotates while being supported by the axis support portion, the ball bearing and the roller bearing support the load applied, A wire take-up device characterized by the above.

2. It has an annular tip protection portion that is attached to the inner surface of the front cover and is disposed around the tip portion, The inner diameter of the tip protection portion is larger than the diameter of the conical portion and smaller than the diameter of the tip portion, The wire take-up device according to claim 1, characterized by the above.

3. The axis support portion, A cylindrical load receiving portion that is passed through a hole portion opened in the front cover, The axis support main body portion that is passed through the load receiving portion and is attached to the inner surface of the load receiving portion via the ball bearing and the roller bearing that is adjacent to the ball bearing on the side opposite to the contact portion with respect to the ball bearing, A nut that is attached to the outer surface of the axis support main body portion and fixes the inner ring portion of the roller bearing, It has a lid portion that closes the hole portion from the outside of the front cover and fixes the outer ring portion of the roller bearing, The wire take-up device according to claim 1 or claim 2, characterized by the above.

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