JP4699121B2 - Bar material restraint device and bar material restraint system using restraint device - Google Patents

Description

  The present invention relates to a rod-shaped material restraint device and a rod-shaped material restraint system using the restraint device, and more particularly, to correct a subsequent process of bending that inevitably occurs when the rod-shaped material is rolled to a required diameter in a rolling process. When straightening with a machine, it effectively restrains the trailing edge of the tail caused by the rotation of the rod-shaped material to improve the accuracy of the rod-shaped material and can suppress the occurrence of noise and wrinkles during correction. The present invention relates to a restraint device and a restraint system for a rod-shaped material by the restraint device.

  A long round steel bar having a circular cut surface (hereinafter referred to as “bar-shaped material”) is passed through a large number of rolling rolls in a rolling process, and the diameter is gradually converged to obtain a bar having a required diameter. However, the obtained rod-like material inevitably undergoes bending such as warping due to plastic deformation during rolling, and cannot be practically used as it is. Therefore, in order to straighten the rod-like material into a straight rod, the rod-like material is passed through a straightening machine disposed downstream of the rolling process. As this straightening machine, an inclined roll type straightening machine with the axis center intersecting at a required angle is known, and when the bent bar-shaped material passes between the inclined rolls, it imparts a straightening strain to the rod-shaped material. By doing so, the bending is corrected and removed.

In such an inclined roll type straightening machine, when the feed-side end of the rod-shaped material is added to the inclined roll, the trailing end of the rod-shaped material swirls greatly with the circumferential rotation applied to the rod-shaped material. In other words, a so-called swaying phenomenon occurs. Therefore, as a device for preventing and suppressing such a tail swing phenomenon, for example, a restraining device disclosed in Patent Document 1 is disposed on the upstream side of the straightening machine. This restraining device is provided with walls opposing each other across the conveyance path of the rod-shaped material conveyed toward the straightening machine, and restraining claws are alternately extended to the lower portions of the respective walls. Yes. Then, the rod-shaped material is restrained by moving the paired walls close to each other at the timing when the rod-shaped material enters the straightening machine, thereby preventing the tail swing phenomenon.
Japanese Patent Publication No. 7-4626

  By the way, the straightening machine is configured to guide the discharge direction of the bar-shaped member by the guide bar, but in order to allow smooth passage of the bar-shaped member, a slight clearance is provided between the bar-shaped member and the guide bar. ing. However, since the restraint device only supports the rod-shaped material by the restraining claws formed at the lower position of the wall, the feeding-side end portion of the rod-shaped material is inserted into the inclined roll of the straightening machine and rotated in the circumferential direction. When the is applied, the vertical movement of the trailing end side of the rod-like material is allowed, and the tail swing phenomenon is not completely prevented. When such vertical movement of the rod-shaped material occurs, the straightening strain imparted to the rod-shaped material is completely caused by the “blurring” of the rod-shaped member allowed within the clearance between the guide bar and the straightening machine. However, the correction accuracy is not constant and the correction accuracy is reduced. In addition, the bending of the material may increase due to the vertical movement of the rod-shaped material, which also causes a reduction in correction accuracy. Furthermore, when the rod-shaped material moves up and down, the rod-shaped material hits the restraining claws irregularly to generate a large noise, and there is a possibility that a striking flaw or the like may occur on the material surface.

  Accordingly, the present invention provides a rod-like material restraining device and restraint device that can prevent the tail-like phenomenon of the rod-like material when supplied to the straightening machine, improve the straightening accuracy, and suppress the generation of noise and wrinkles. An object of the present invention is to provide a restraint system for rod-like materials.

In order to overcome the above-mentioned problems and achieve the intended purpose, a restraint device for a rod-shaped material according to claim 1 of the present application is:
A restraint device for restraining a rod-shaped material fed toward a straightening machine,
Walls disposed opposite to each other across the feeding line of the rod-shaped material;
Upper restraining claws provided alternately in the material feeding direction at the upper part of each wall and extending toward the opposing wall;
An upper inclined surface that is formed on the side of the upper restraining claw that faces the feeding line of the rod-shaped material, and that is inclined upward as it is separated from the corresponding wall;
Lower restraining claws provided alternately in the material feeding direction so as to alternate with the upper restraining claws provided on the corresponding walls at the lower portions of the respective walls, and extending toward the opposing walls;
A lower inclined surface that is formed on the side of the lower restraining claw that faces the feeding line of the rod-shaped material, and that is inclined downward as it is separated from the corresponding wall;
Actuating means for moving the opposing walls close to and away from each other,
When the opposing walls are moved close to each other, the upper restraining claw provided on one wall and the lower restraining claw provided on the other wall overlap each other and are provided on the one wall. The lower restraining claw and the upper restraining claw provided on the other wall are configured to overlap vertically,
The bar material be to approach movement to one another said opposing walls at the timing entering the straightening machine, is summarized in that configured to restrain the rod-like material in the upper and lower restraining claws.

In this way, the upper and lower restraining claws are formed on the walls facing each other across the feeding line of the rod-shaped material, and the upper and lower restraining claws of each wall are moved close to each other at the timing when the rod-shaped material enters the straightening machine. Te, that is configured to restrain the rod-like material in the upper and lower restraining claws overlap said vertically suppress butt swinging phenomenon caused by the material on rotation of the resulting circumferential direction when the rod-like material is fed into the straightener Can do. Accordingly, it is possible to prevent a decrease in correction accuracy due to the sticking phenomenon of the rod-shaped material when supplied to the straightening machine, and it is possible to prevent the generation of noise and wrinkles. Moreover, since the surface which restrains the rod-shaped material in the upper and lower restraining claws is formed so as to be inclined, the rod-shaped material can be securely held, so that the trailing phenomenon of the material can be suppressed. Furthermore, even if the diameter of the rod-shaped material changes due to the order change, the rod-shaped material can be reliably restrained.

  The gist of the restraint device for rod-shaped material according to claim 2 is that the corresponding base portion on the wall side in the upper and lower inclined surfaces is formed in an arc shape.

  Thus, by forming the corresponding wall-side bases on the inclined surfaces of the upper and lower restraining claws in an arc shape, the rod-like material can be more securely held and the tail swing phenomenon can be suppressed.

  The rod-shaped material restraining device according to claim 3, wherein an upper limit of the lower inclined surface is positioned at a level above a material carrying surface of a conveying roller disposed at a predetermined interval in the feeding line, and the lower inclined surface The lower limit of is summarized as being set so as to be positioned at a level below the material carrying surface.

  In this way, the upper and lower restraining claws are formed in a rod shape by positioning the upper limit of the lower inclined surface at a level above the material carrying surface of the transport roller and the lower limit of the lower inclined surface at a level below the material carrying surface. When the material is brought into contact with and restrained, the rod-shaped material can be lifted above the conveying roller, and the rod-shaped material can be prevented from being caught by the rotationally driven conveying roller.

In order to overcome the above-mentioned problems and achieve an intended purpose, a restraint system for a rod-like material by a restraint device according to claim 4 of the present application is provided.
In the rod-like material restraint system comprising a plurality of the rod-like material restraining devices according to any one of claims 1 to 3 in series in the material feeding direction,
While providing a first detection means for detecting the timing when the rod-shaped material is sent to the upper and lower correction rolls in the correction machine,
A second detection means for detecting the rod-shaped material is provided upstream of the restraining device located on the most upstream side in the material feeding direction;
When the second detection means detects the arrival of the rod-shaped material, the opposing walls are separated from each other with a predetermined time difference in the order of the restraint device located on the upstream side to the restraint device located on the downstream side. the moved, the timing at which the rod-shaped material is fed into the upper and lower straightening rolls provided in the straightener and detecting by the first detection means, restrain the rod-like material opposed walls of each restraint device proximate move relative to each other The summary is as follows.

  As described above, when the detection means provided on the upstream side of the restraint device detects the arrival of the rod-shaped material, the restraint device located on the upstream side in the material feeding direction is followed by the predetermined order in the order of the restraint device located on the downstream side. By moving the upper and lower restraining claws apart from each other with a time difference of, it is possible to shorten the interval between the preceding rod-shaped material and the succeeding rod-shaped material and supply it to the straightening machine, improving the production efficiency. Can contribute. At this time, even when the upper and lower restraining claws of the restraining device located on the upstream side are separated from each other, the preceding rod-like material is restrained by the restraining device located on the downstream side, so that the rod shape that is being corrected by the straightening machine The restraint of the material is not completely released, and the trailing phenomenon of the leading rod-like material can be appropriately suppressed.

  According to the rod-shaped material restraining device and the rod-shaped material restraining system of the present invention, the rod-like material swinging phenomenon at the time of supply to the straightening machine is prevented, and the correction accuracy is prevented from being lowered, and noise and Generation of wrinkles can be suppressed.

  Next, a rod-like material restraining device and a rod-like material restraining system using the restraining device according to the present invention will be described in detail below with reference to the accompanying drawings by way of preferred embodiments.

  In FIG. 1, reference numeral 10 indicates a straightening machine that corrects the bending of the rod-shaped material 14, and an inclined two-roll type straightening machine is preferably used. Upstream of the straightening machine 10, a plurality of zigzag conveying rollers 12 are arranged at predetermined intervals along the feeding line L of the rod-like material 14, for example, the rod-like material 14 carried out from a rolling process (not shown) One by one is carried on a conveyance roller 12 that is rotationally driven by a motor 13 and conveyed toward the correction machine 10. When the restraint devices KS1 to KS4 according to the embodiment are arranged between the respective transport rollers 12 and the timing at which the tip of the rod-shaped material 14 is inserted into the straightening machine 10 is detected by the first detection means 41 made of, for example, a photocell. The control means 16 controls so as to operate (see FIG. 5). The number of the restraining devices KS1 to KS4 is determined according to the length of the rod-shaped material 14 to be corrected. In the embodiment, four restraining devices KS1 to KS4 are arranged along the feeding line L. Yes. In the following description, the first restraining device KS1 to the fourth restraining device KS4 may be referred to in order from the restraining device located on the upstream side in the material feeding direction.

  As shown in FIG. 1, FIG. 3, or FIG. 4, each of the restraining devices KS <b> 1 to KS <b> 4 sandwiches the feed line L between fixed frames 18 provided at positions below the feed line L of the rod-shaped material 14. The first restraining means 21 and the second restraining means 22 are provided, and are configured to actuate the first and second restraining means 21 and 22 to restrain the rod-shaped material 14. Here, the configurations of the first restraining means 21 and the second restraining means 22 are almost the same. Accordingly, the configuration of the first restraining means 21 will be mainly described, and the configuration of the second restraining means 22 will be denoted by the same reference numerals and detailed description thereof will be omitted.

  As shown in FIGS. 2 to 4, the first restraining means 21 is a plate-like upright wall (wall) 24 parallel to the feed line L, and an upper portion of the upright walls 24, 24. The restraining claw 26, the lower restraining claw 28 provided at the lower position of the upright wall 24, and the back side of the upright wall 24 (the side opposite to the feed line L) are connected to the upright wall 24 through the feed line. And a cylinder (actuating means) 30 that moves close to and away from L, and the cylinder 30 is fixed on a table 32 attached to the fixed frame 18. That is, the upright wall 24 of the first restraining means 21 and the upright wall 24 of the second restraining means 22 face each other substantially in parallel with the feeding line L in between. The table 32 is configured to move horizontally along the fixed frame 18 via a drive mechanism (not shown), and the tables 32 and 32 of the first and second restraining means 21 and 22 are relatively moved. By being close to or separated from each other, the distance between the upright walls 24 and 24 can be changed according to the diameter of the rod-shaped material 14 conveyed along the feeding line L.

  As shown in FIGS. 2 to 4, a support plate 36 is attached to the back side of the upright wall 24 via a reinforcing frame 34, and the piston of the cylinder 30 is located at a substantially central position of the support plate 36. The tip of the rod 30a is fixed. That is, the upright wall 24 moves close to and away from the feed line L within the allowable stroke of the piston rod 30 a in accordance with the bias of the cylinder 30. A pair of guide members 38, 38 are disposed on the table 32 so as to sandwich the cylinder 30, and the tips of the guide rods 38a, 38a slidably inserted into the guide members 38, 38 are the support members. It is fixed to the back side of the plate 36. That is, when the support plate 36 is supported by the guide rods 38a and 38a and the cylinder 30 is urged, the upright wall 24 moves toward and away from the feed line L while maintaining the same posture. It is like that. The control means 16 controls the cylinder 30 of the first restraining means 21 and the cylinder 30 of the second restraining means 22 to operate synchronously, thereby synchronizing the upright walls 24 and 24. It is comprised so that it may adjoin and space apart.

  As shown in FIGS. 2 to 4, the upper restraining claw 26 extends from above the wall surface of the upright wall 24 facing the feeding line L toward the upstanding wall 24 and feeds it. It is formed so as to extend a required length along the feed line L. Here, the upper restraining claw 26 provided on the first restraining means 21 and the upper restraining claw 26 provided on the second restraining means 22 are set so as to alternate in the material feeding direction, and both the upright walls 24, 24 are set. The upper restraining claws 26, 26 are prevented from interfering with each other when they are moved close to each other. Further, on each of the upper restraining claws 26 facing the feeding line L (material restraining surface), there is formed an upper inclined surface 26a that gradually displaces upward toward the opposing upright wall 24 (FIG. 4). reference). In addition, the base 26b on the inclined lower end side of the upper inclined surface 26a is formed in an arc shape so that the rod-like material 14 having a round bar shape can be suitably restrained.

  On the other hand, the lower restraining claw 28 extends from the lower surface of the upright wall 24 toward the feed line L toward the opposed upright wall 24 and has a required length along the feed line L. It is formed to extend. The lower restraining claws 28 are provided at positions different from the upper restraining claws 26 (positions that do not overlap vertically) with respect to the corresponding upright walls 24. That is, the upper and lower restraining claws 26 and 28 are formed on the restraining means 21 and 22 so as to be separated in the material feeding direction (see FIG. 2 or FIG. 3). Further, the lower restraining claw 28 provided in the first restraining means 21 and the lower restraining claw 28 provided in the second restraining means 22 are set to be alternated in the material feeding direction, and both the upright walls 24, 24 are connected. The lower restraining claws 28, 28 are configured not to interfere with each other when they are moved close to each other. When the upright walls 24 and 24 of the first and second restraining means 21 and 22 are moved close to each other, the upper restraining claw 26 of the first restraining means 21 and the lower restraining claw 28 of the second restraining means 22 are moved. In addition to overlapping vertically, the lower restricting claw 28 of the first restricting means 21 and the upper restricting claw 26 of the second restricting means 22 are set to overlap vertically.

  Further, a lower inclined surface 28a that is gradually displaced downward toward the opposing upright wall 24 is formed on the side (material restraining surface) of the lower restraining claw 28 that faces the feeding line L. In a state where the claws 26 and 28 are viewed along the feeding line L, the upper and lower inclined surfaces 26a and 28a have a substantially rectangular shape sandwiching the feeding line L (see FIG. 4). That is, when the upright walls 24, 24 of the first and second restraining means 21, 22 are held at positions where they are separated (accepting positions), the cylinder 30 is operated to move both the upright walls 24, 24 close to each other. The space defined by the upper and lower restraining claws 26 and 28 of the first restraining means 21 and the upper and lower restraining claws 26 and 28 of the second restraining means 22 is gradually narrowed. The rod-shaped material 14 is sandwiched between and displaced to a position where it is restrained (restraint position). The upper end (upper limit) of the lower inclined surface 28a provided on the lower restraining claw 28 is located at a level above the material carrying surface 12a of the transport roller 12, and the lower end (lower limit) of the lower inclined surface 28a is The dimensions are set so as to be positioned at a level below the material carrying surface 12a. By setting the dimensions in this way, when the lower restraining claw 28 (upright walls 24, 24) is displaced from the receiving position to the restraining position, the rod-shaped material 14 carried on the material carrying surface 12a of the transport roller 12 is lowered. The rod-shaped material 14 is restrained in a state where it is slightly lifted along the inclined surface 28a. Further, the base 28b on the inclined lower end side of the lower inclined surface 28a is formed in an arc shape so that the round bar-like rod-shaped material 14 can be suitably restrained.

  As shown in FIG. 2 or 4, a restricting plate 40 that extends horizontally toward the upper side of the feeding line L is provided at a position above the upper restraining claw 26 in each upright wall 24. The restricting plate 40 is formed to extend larger in the horizontal direction than the upper and lower restraining claws 26, 28, and holds the upper and lower restraining claws 26, 28 in the receiving position (the rod-shaped material 14 is held). It functions to restrict the rod-shaped material 14 from popping out of the restraining devices KS1 to KS4 in a state where it is not restrained. In order to prevent the restriction plate 40 from interfering with the opposing upright wall 24 when the upright wall 24 (upper and lower restraining claws 26, 28) is displaced to the restrained position, as shown in FIG. A step portion 24a having a short upper and lower width dimension is formed at a position where the restriction plate 40 is not provided in 24, and the restriction plate 40 displaced to the restricting position faces the step portion 24a.

  Further, on the upstream side of the first restraining device KS1, second detection means (detection means) 42 for detecting the tip of the rod-shaped material 14 conveyed by the conveyance roller 12 is disposed (see FIG. 5), and rolling The rod-shaped material 14 conveyed from the process toward the straightening machine 10 is configured to be sequentially detected. Here, when the rod-like material 14 that has come from the rolling process is detected by the second detection means 42, the upper and lower restraining claws 26, 28 of the first restraining device KS1 located on the upstream side are displaced from the restraining position to the receiving position, Thereafter, the control means 16 controls the cylinders 30 of the restraining devices KS1 to KS4 so that the upper and lower restraining claws 26 and 28 of the second to fourth restraining devices KS2 to KS4 are sequentially displaced from the restraining position to the receiving position with a predetermined time difference. Controls the operation. Here, the “predetermined time difference” is set to be shorter than the time required for the rod-shaped material 14 conveyed by the conveying roller 12 to arrive at the downstream restraining devices KS2 to KS4. When reaching to KS4, the upper and lower restraining claws 26, 28 are displaced to the receiving position.

(Effects of Example)
Next, the action of the bar-shaped material restraining device and the bar-shaped material restraining system according to the embodiment configured as described above will be described.

  The rod-like material 14 that has been rolled sequentially in a rolling process (not shown) and formed into a round bar with a predetermined diameter is carried on a conveying roller 12 one by one through a feeding device (not shown) such as a walking beam. 1 is supplied toward the straightening machine 10 shown in FIG. At this time, as shown in FIGS. 4 and 6A, the upright walls 24 of the first and second restraining means 21 and 22 in the restraining devices KS1 to KS4 arranged along the feeding line L, 24 is held at a receiving position spaced from each other until immediately before the leading end of the rod-shaped material 14 in the feeding direction is fed into the correction device 10, and allows the rod-shaped material 14 to be conveyed by the conveying roller 12.

  When the timing at which the rod-like material 14 is sent to the upper and lower straightening rolls provided in the straightening machine 10 is detected by the first detection means 41, the control means 16 gives an operation command to the cylinders 30 of the restraining devices KS1 to KS4. . As a result, the cylinders 30 and 30 of the first and second restraining means 21 and 22 facing each other across the feeding line L in each restraining device KS1 to KS4 are pressure-biased to extend the corresponding piston rods 30a and 30a. The upright walls 24, 24 are moved in directions close to each other and displaced from the receiving position to the restraining position.

  As the upright walls 24, 24 move, the lower restraining claws 28, 28 disposed on the upright walls 24, 24 hold the rod-shaped material 14 as shown in FIG. From 12 up to slightly upward. That is, the upper end of the lower inclined surface 28a formed on each lower restraining claw 28 is set so as to be positioned at a level higher than the material carrying surface of the transport roller 12, and the lower end of the lower inclined surface 28a is the material carrying surface. It is set to be a lower level than. Accordingly, when the lower restraining claws 28 and 28 (upright walls 24 and 24) of the first and second restraining means 21 and 22 come close to each other, as shown in FIG. When the rod-like material 14 carried on the lower abutment claws 28a, 28a abuts on the lower inclined surfaces 28a, 28a, and the lower restraint claws 28, 28 come close to each other, the rod-like material 14 is rod-like along the lower inclined surfaces 28a, 28a. The material 14 is lifted upward (see FIG. 6 (c)). Here, when the upright walls 24 and 24 of the first and second restraining means 21 and 22 are close to each other, the upper inclined surfaces 26 a and 26 a of the upper restraining claws 26 and 26 are close to the rod-shaped material 14. That is, the rod-shaped material 14 passes through the space defined by the upper and lower restraining claws 26, 26, 28, 28 of the first and second restraining means 21, 22, and its free movement in the radial direction is restricted. .

  Here, as shown in FIG. 6 (c), the upper and lower restraining claws 26, 26, 28, 28 displaced to the restraining position and the rod-shaped material 14 are set to have a slight margin (gap). Since the rod-shaped material 14 is not fixedly held by the upper and lower restraining claws 26, 26, 28, 28, the rod-shaped material 14 is held by a straightening roll (not shown) and is directly drawn into the straightening machine 10. The Here, the rod-shaped material 14 is rotated in the circumferential direction at the moment when it is fed into the straightening machine 10, and the tail end of the material 14 turns due to the bending, but the upper and lower restraining claws 26, 26, 28. , 28 close to each other, the swivel range at the end is significantly limited. As a result, the bottom swing phenomenon of the rod-shaped material 14 is reliably suppressed. That is, it is possible to reduce the occurrence of “blurring” in the rod-shaped material 14 in the straightening machine 10 due to the tail swing phenomenon, so that the straightening accuracy of the rod-shaped material 14 can be improved. Further, by suppressing the tail swing phenomenon, it is possible to prevent the bending of the rod-shaped material 14 from increasing, and it is possible to prevent a reduction in correction accuracy. And generation | occurrence | production of the noise and wrinkles which arise when a rod-shaped material 14 is hit | damaged can be reduced significantly. In addition, since the rod-shaped material 14 is restrained by the upper and lower restraining claws 26, 26, 28, 28 of the first and second restraining means 21, 22, a large swiveling of the trailing end in the rod-shaped material 14 can be effectively suppressed. It is possible to pass through the straightening machine 10 at a high speed, and the bending can be almost completely corrected only by passing through the two-roll type straightening machine 10 once. In addition, since the rod-shaped material 14 restrained by the upper and lower restraining claws 26 and 28 is not in contact with the transport roller 12, the rotating rod-shaped material 14 and the transport roller 12 being rotated are brought into contact with each other. Further, it is possible to prevent the rod-shaped material 14 from becoming sticky.

  The rod-shaped material 14 that is corrected by the correction machine 10 has various diameters depending on the application. In the embodiment, since the tables 32 and 32 of the first and second restraining means 21 and 22 can be brought close to and separated from each other as required, these rod-like shapes are used prior to use of the restraining devices KS1 to KS4. Depending on the specific diameter of the material 14, the upper and lower restraining claws 26, 26 of the first and second restraining means 21, 22 are moved closer to or away from the tables 32, 32 of the first and second restraining means 21, 22. When the upper and lower restraining claws 26, 26, 28 and 28 are displaced to the restraining position, the rod-shaped material 14 can be restrained with an appropriate gap. Thus, in the restraining devices KS1 to KS4 of the embodiment, it is possible to restrain the rod-shaped material 14 having various diameters and supply it to the straightening machine 10. Moreover, since the upper and lower restraining claws 26, 28 have the inclined surfaces 26a, 28a, the rod-shaped material 14 can be restrained reliably even if the distance between the upright walls 24, 24 changes according to the material diameter. Further, by forming the corresponding base portions 26b, 28b on the upright wall 24 side in the inclined surfaces 26a, 28a of the upper and lower restraining claws 26, 28 in an arc shape, the round bar-like rod-shaped material 14 and the restraining claws 26, 28 ( The gap between the inclined surfaces 26a, 28a and the bases 26b, 28b) can be kept to the minimum necessary, and there is also an advantage that the trailing phenomenon of the rod-shaped material 14 can be more reliably suppressed.

  By the way, in the state where the upright walls 24 and 24 of the first and second restraining means 21 and 22 in the restraining devices KS1 to KS4 are held at the restraining positions, the restraining devices KS1 to KS4 are successively supplied from the rolling process. It is difficult to accept 14. Therefore, in the embodiment, when the second detection means 42 provided upstream of the first restraining device KS1 detects the arrival of the rod-shaped material 14, the first and second restraining means 21 in the first restraining device KS1 located in the uppermost stream. , 22 is controlled by the control means 16 so as to displace the upper and lower restraining claws 26, 28 from the restraining position to the receiving position. Further, before the rod-like material 14 reaches the second restraining device KS2, the upper and lower restraining claws 26, 28 of the first and second restraining means 21, 22 in the second restraining device KS2 are moved from the restraining position to the receiving position. Displace. Similarly, before the rod-shaped material 14 reaches the third and fourth restraining devices KS3 and KS4, the upper and lower restraining claws 26 and 28 of the first and second restraining means 21 and 22 in the corresponding restraining devices KS3 and KS4 are moved. Displace from the restraint position to the receiving position.

  That is, when the second detection means 42 for detecting the rod-shaped material 14 is provided upstream of the first restraining device KS1 located at the most upstream in the material feeding direction, and the second detection means 42 detects the arrival of the rod-shaped material 14 In addition, since each of the second to fourth restraining devices KS2 to KS4 positioned on the downstream side with a predetermined time difference is sequentially moved to the receiving position, the rod-shaped material 14 is supplied to the straightening machine 10 substantially continuously. Can contribute to the improvement of production efficiency. Further, the upper and lower restraining claws 26 and 28 of the first and second restraining means 21 and 22 are sequentially received with a predetermined time difference in order from the upstream first restraining device KS1 to the downstream fourth restraining device KS4. By displacing the rod-shaped material 14, the restraint of the rod-shaped material 14 that is being corrected is not completely released by the straightening machine 10, and the trailing phenomenon of the rod-shaped material 14 can be appropriately suppressed.

[Example of change]
The rod-like material restraining device and the rod-like material restraining system using the restraining device according to the present invention are not limited to those of the embodiments, and various modifications can be made. For example, in the embodiment, an upright wall is used as a means for restraining the rod-shaped material. However, this wall is not necessarily required to be upright, and may be an inclined wall or other horizontal wall.

  In the embodiment, a pair of upper and lower restraining claws are formed on the wall of one restraining device, but the present invention is not limited to this, and the upper and lower restraining claws provided on the opposing walls do not interfere with each other. By doing so, an arbitrary number of upper restraining claws and lower restraining claws may be formed. Further, in the embodiment, the cylinder is exemplified and described as the operation means for moving the upper and lower restraining claws close to and away from each other. However, the present invention is not limited to this, and it is needless to say that various conventionally known means can be adopted.

It is explanatory drawing shown in the state which has arrange | positioned the restraint apparatus which concerns on an Example in the upstream of a straightening machine. It is a perspective view which shows the restraint apparatus which concerns on an Example in the state seen from the upstream. It is a top view of the restraint device concerning an example. It is a front view which shows the restraint apparatus which concerns on an Example in the state seen from the downstream. It is a block diagram which shows the relationship between the restraint apparatus which concerns on an Example, and a control means. It is explanatory drawing which shows the relationship between the upper and lower restraining claws and the rod-shaped material in the restraining device according to the embodiment, wherein (a) shows the state where the upper and lower restraining claws are held in the receiving position, and (b) is the lower restraining claws. (C) shows a state in which the rod-shaped material is restrained by holding the upper and lower restraining claws at the restraining position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Straightening machine 12 Conveying roller 12a Material carrying surface 14 Rod-shaped material 24 Upright wall (wall)
26 Upper restraining claw 26a Upper inclined surface 26b Base 28 Lower restraining claw 28a Lower inclined surface 28b Base 30 Cylinder (actuating means)
41 first detecting means 42 and the second detection hand stage KS1 first constraint device (restraining device)
KS2 Second restraint device (restraint device)
KS3 3rd restraint device (restraint device)
KS4 4th restraint device (restraint device)
L Feed line

Claims (4)

A restraint device for restraining the rod-shaped material (14) fed toward the straightening machine (10),
Walls (24) arranged opposite to each other across the feeding line (L) of the rod-shaped material (14),
Upper restraining claws (26) provided alternately in the material feeding direction at the top of each wall (24) and extending toward the opposing wall (24),
An upper inclined surface (26a) that is formed on the side of the upper restraining claw (26) that faces the feeding line (L) of the rod-shaped material (14), and that is inclined upward as the distance from the corresponding wall (24) increases.
In the lower part of each wall (24), the upper restraining claw (26) provided on the corresponding wall (24) is alternately provided in the material feeding direction so as to alternate with the facing wall (24). The lower restraining claw (28) extending,
A lower inclined surface (28a) that is formed on the side of the lower restraining claw (28) that faces the feeding line (L) of the rod-shaped material (14), and that is inclined downward as the distance from the corresponding wall (24) increases.
Actuating means (30) for moving the opposing walls (24, 24) close to and away from each other;
The upper restraining claw (26) provided on one wall (24) and the lower restraint provided on the other wall (24) when the opposing walls (24, 24) are moved close to each other. The claw (28) overlaps vertically, and the lower restraint claw (28) provided on the one wall (24) and the upper restraint claw (26) provided on the other wall (24) overlap each other. Configured and
By moving the opposed walls (24, 24) close to each other at the timing when the rod-like material (14) enters the straightening machine (10), the rod-like material (14) is moved by the upper and lower restraining claws (26, 28). restraint device of the rod-like material characterized constructed <br/> it to restrain.   The restraint device for rod-shaped material according to claim 1, wherein bases (26b, 28b) on the corresponding wall (24) side of the upper and lower inclined surfaces (26a, 28a) are formed in an arc shape.   The upper limit of the lower inclined surface (28a) is located at a level above the material carrying surface (12a) of the conveying roller (12) disposed at a predetermined interval in the feeding line (L), and the lower inclined surface 3. The rod-shaped material restraining device according to claim 1, wherein the lower limit of (28a) is dimensioned so as to be positioned at a level below the material carrying surface (12a). In the rod-shaped material restraint system comprising a plurality of the restraint devices (KS1 to KS4) of the rod-shaped material (14) according to any one of claims 1 to 3 in series in the material feeding direction,
A first detecting means (41) for detecting the timing at which the rod-like material (14) is sent to the upper and lower straightening rolls in the straightening machine (10);
A second detection means (42) for detecting the rod-shaped material (14) is provided upstream of the restraining device (KS1) located on the most upstream side in the material feeding direction,
When the second detection means (42) detects the arrival of the rod-shaped material (14), a predetermined order is given in the order of the restraint device (KS1) located on the upstream side to the restraint device (KS4) located on the downstream side. The first detection means (41) detects the timing when the opposing walls (24, 24) are moved away from each other with a time difference and the rod-like material (14) is fed into the upper and lower straightening rolls provided in the straightening machine (10). by detected by, by restraint device, characterized in that the so that configured to restrain the opposing walls (24, 24) to close move relative to each other rod-like material (14) of each restraint system (KS1～KS4) Bar material restraint system.

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