JP6957780B1 - Gripping device for deformed rods - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gripping device for a deformed bar such as a reinforcing bar in which a plurality of protrusions such as knots and ribs are formed so that a difference in cutting length does not occur between the bars. SOLUTION: In a state where an intermediate plate 70 is moved to a lowering position by an intermediate plate vertical movement device 72, a movable vise claw 48c is moved toward a fixed vise claw 48b, so that two deformed rods 14 Is gripped. Since the two deformed rods 14 do not come into direct contact with each other because the intermediate plate 70 is interposed between them, the tip of the protrusion of one of the deformed rods 14 is between the protrusions of the other deformed rod 14. The two deformed rods 14 do not slide down into the valley, and the two deformed rods 14 do not shift from each other in the longitudinal direction, and there is no difference Δt in cutting length between the two deformed rods 14. [Selection diagram] Fig. 5

Description

According to the present invention, when a plurality of deformed rods having a plurality of protrusions such as knots such as reinforcing bars and ribs formed in the longitudinal direction are cut side by side, the deformed rods are gripped in the horizontal direction. Regarding the gripping device.

In order to improve the cutting efficiency, it is desired to cut a plurality of rods at the same time with a bar cutting machine. For this purpose, a gripping device for gripping two rods at a portion adjacent to the cutting position has been proposed. For example, the clamp device described in Patent Document 1 is that.

This clamp device includes a clamp block in which a pair of V-grooves for receiving two rods is formed, and a pressing member arranged above the clamp block, and is received in the pair of V-grooves of the clamp block. The reduction vise presses the two rods positioned in (1) to clamp the two rods.

In the above clamp block, even if the shapes of the ends of the two rods positioned by the clamp block vary due to the influence of the molding process which is the previous process, they are separated from each other at a position away from the ends of the two rods. A pair of V-grooves are formed at predetermined intervals so that the two rods can be securely gripped in the same state, so that the two rods do not move during cutting.

However, the bar material gripped by the conventional clamp device shows a deformed shape at the end when the molding is finished, but it is premised that the diameter is basically the same except for the end. For this reason, when attempting to cut a deformed bar whose diameter is not constant in the circumferential direction such as a reinforcing bar or a bar having a large variation in diameter between the bars, of the two bars When one bar is sandwiched between the clamp block and the pressing member, the other bar has a problem that a gap is formed between the clamp block and the pressing member and the other bar is not sufficiently sandwiched.

Japanese Unexamined Patent Publication No. 07-112316

On the other hand, a gripping device (horizontal vise) that grips two deformed rods from the lateral direction in order to reliably grip the two rods even if the diameters of the two rods vary. Can be considered. Using this cutting device, two deformed rods with uniform end faces are gripped, and the two rods are fixed near the cutting position, or the two rods have a predetermined cutting length. The two rods are cut in a state where they are moved to the cutting position for cutting with and positioned. However, when cutting such two deformed rods, if a pinching pressure is applied in a state where the tips of the protrusions of the two rods are in contact with each other by the gripping device, the protrusions of one of the rods are raised. The tip may slide down into the valley between the bumps of the other bar and the two bars may shift from each other in the longitudinal direction. Therefore, even if an attempt is made to cut two rods with a predetermined cutting length, there is a problem that a difference occurs in the cutting lengths of the two rods. Such a problem occurs even when trying to cut three or more rods.

The present invention has been made in the context of the above circumstances, and an object of the present invention is to cut between rods even if the rods have irregular shapes such as reinforcing bars having a plurality of protrusions such as knots and ribs. It is an object of the present invention to provide a gripping device for a deformed bar material so that there is no difference in length.

The gist of the first invention for achieving the above object is (a) using a pair of fixed vise claws and movable vise claws that are opposed to each other and can be approached and separated from each other, and the pair of fixed vise claws and the movable vise claws. A device for gripping a plurality of deformed rods having a plurality of protrusions formed in the longitudinal direction mounted on a support surface between the movable vise claws from the lateral direction (b). ) A descending position between a portion of the plurality of deformed rods having one or more intermediate plates and placed on the support surface and scheduled to be gripped by the gripping device, and the plurality of rods. An intermediate plate vertical movement device for moving the intermediate plate between the upper retracted positions between the parts scheduled to be gripped by the gripping device for the deformed bar, and (c) when the intermediate plate is in the lowered position. An intermediate plate lateral movement support device that movably supports the intermediate plate in the lateral direction, and (d) the intermediate plate vertical movement device by the intermediate plate vertical movement device prior to gripping by the pair of fixed vise claws and movable vise claws. The present invention includes a vise drive control device for moving the movable vise claw toward the fixed vise claw in a state where the movable vise claw is moved toward the fixed vise claw.

The gist of the second invention is that, in the first invention, the intermediate plate is provided with one or more expanding members to be inserted from below between the plurality of deformed rods, and the intermediate plate is moved up and down by the intermediate plate vertical movement device. The present invention includes a bar member expanding device for inserting and expanding the expanding member between the plurality of deformed rod members before moving the member to the lowering position.

The gist of the third invention is that, in the first invention or the second invention, the gripping device grips the tip portions of the plurality of deformed bar members having the same end faces sent out from the bar bar cutting machine. The gripping device is provided on a moving table guided by rails provided along the longitudinal direction of the plurality of rods, and the plurality of deformed rods are predetermined by the movement of the moving table. The cutting length is to be pulled out to a cutting position for cutting with the bar cutting machine.

The gist of the fourth invention is that, in the third invention, a rack is provided in parallel with the rail, and the moving table is moved by rotationally driving a pinion that meshes with the rack on the moving table. The moving table drive device, the gripping device support base movably provided between the upper position and the lower position while supporting the gripping device, and the gripping device support base between the upper position and the lower position. A vertical drive device driven by the above is provided.

The gist of the fifth invention is that, in the fourth invention, the gripping device supports the gripping device via a lateral positioning device that positions the gripping device by moving it in the lateral direction orthogonal to the rail. It is provided on the table.

According to the gripping device for the deformed bar of the first invention, the intermediate plate is moved to the lowering position by the intermediate plate vertical movement device prior to gripping by the pair of fixed vise claws and movable vise claws. Then, the movable vise claw is moved toward the fixed vise claw, so that a plurality of deformed rod members are gripped. Since the plurality of deformed rods do not come into direct contact with each other because the intermediate plate is interposed between them, the tip of the protrusion of one of the deformed rods goes to the valley between the protrusions of the other deformed rod. The plurality of deformed rods do not slip off each other in the longitudinal direction, and there is no difference in cutting length between the plurality of deformed rods.

According to the gripping device for the deformed bar material of the second invention, the expanding member has a plurality of deformed shapes before the intermediate plate is moved to the lowering position by the intermediate plate vertical movement device. It is inserted between the bars from below and expanded. As a result, the intermediate plate is smoothly inserted between the plurality of deformed rods.

According to the gripping device for the deformed bar material of the third invention, the gripping device grips the tip portions of the plurality of deformed bar members having the same end faces sent out from the bar material cutting machine, and grips the plurality of deformed bar members. The device is provided on a moving table guided by rails provided along the longitudinal direction of the plurality of rods, and the movement of the moving table cuts the plurality of rods into a predetermined cutting length. It is pulled out to the cutting position for cutting with the bar cutting machine. As a result, the long deformed rods are cut accurately, and there is no difference in the cutting lengths of the long deformed rods.

According to the gripping device for the deformed bar of the fourth invention, a rack is provided in parallel with the rail, and the moving table is moved by rotationally driving a pinion that meshes with the rack to move the moving table. The pedestal drive device, the gripping device support pedestal provided so as to be movable between the upper position and the lower position while supporting the gripping device, and the gripping device support pedestal between the upper position and the lower position. A vertical drive device for driving is provided. As a result, the gripping device pulls out a plurality of rods to a cutting position for cutting with a bar cutting machine at a predetermined cutting length, and then pulls out the original with the rod pulled up to the upper position. It is quickly returned to the starting position.

According to the gripping device for the deformed bar of the fifth invention, the gripping device supports the gripping device via a lateral positioning device for positioning the gripping device by moving it in the lateral direction orthogonal to the rail. It is provided in. As a result, the lateral positioning device positions the fixed vise claws of the gripping device at a position where the plurality of irregularly shaped rods with uniform end faces sent from the bar cutting machine do not interfere with the fixed vise claws of the gripping device. Be done.

It is a perspective view which shows the bar cutting apparatus to which the gripping apparatus of one Example of this invention was applied. It is a top view which shows the main part of the bar material drawing device provided in the bar material cutting device of FIG. It is a front view which shows the main part of the bar material drawing device of FIG. It is a side view which shows the main part excluding the intermediate plate vertical movement device and the intermediate plate lateral movement support device of the bar material drawing device of FIG. It is a front view which shows the intermediate plate vertical movement apparatus and the intermediate plate lateral movement support apparatus of FIG. It is a time chart explaining the gripping operation of the gripping device by the electronic control device of FIG. FIG. 3 is a schematic plan view showing a state before gripping the gripping device provided in the bar material drawing device of FIG. 2. It is the schematic cross-sectional view which shows the state before gripping of the gripping device provided in the bar material drawing device of FIG. FIG. 3 is a schematic plan view showing a state after gripping the gripping device provided in the bar material drawing device of FIG. 2. It is the schematic cross-sectional view which shows the state after gripping of the gripping device provided in the bar material drawing device of FIG. It is a schematic plan view which shows the state before gripping of the gripping apparatus of the comparative example which does not use an intermediate plate, and is the figure corresponding to FIG. It is a schematic plan view which shows the state after gripping of the gripping apparatus of the comparative example which does not use an intermediate plate, and is the figure corresponding to FIG. It is a schematic plan view which shows the state which held one deformed bar member with the intermediate plate retracted, and is the figure which corresponds to FIG. It is a schematic cross-sectional view which shows the state which held one deformed bar member with the intermediate plate retracted, and is the figure which corresponds to FIG. It is a front view which shows the intermediate plate vertical movement apparatus and the intermediate plate lateral movement support apparatus of another Example of this invention, and is the figure corresponding to FIG.

Hereinafter, examples of the present invention will be described in detail with reference to the drawings. In the following examples, the drawings are appropriately simplified or deformed, and the dimensional ratios and shapes of each part are not necessarily drawn accurately.

FIG. 1 is a perspective view showing a bar cutting device 12 to which a gripping device 48 (see FIG. 4) for a deformed bar 14 according to an embodiment of the present invention is applied. The bar cutting device 12 cuts two irregular bar members 14 having a plurality of protrusions 14a (see FIG. 7) such as knots and ribs formed in the longitudinal direction into predetermined dimensions. Since the cutting length of the deformed bar 14 ranges from several tens of centimeters to more than ten meters, a bar cutting machine 16 having a bar feeding function for feeding the deformed bar 14 with a relatively short cutting length, and a bar cutting machine. It is provided adjacent to the bar 16 and includes a bar drawing device 38 for pulling out the deformed bar 14 from the bar cutting machine 16 for cutting with a relatively long cutting length. The gripping device 48 is provided in the bar drawing device 38.

The bar cutting machine 16 grips a part of the deformed bar 14 and feeds the deformed bar 14 toward the cutting position A1 by a predetermined cutting length in the axial direction (longitudinal direction), that is, in the feeding direction. A feed vise 18 and a feed drive device (not shown) composed of a hydraulic cylinder, a pneumatic cylinder, an electric motor actuator, and the like and reciprocating the feed vise 18 are provided. The feed vise 18 is movably provided by being guided in a direction parallel to the deformed bar 14 by a plurality of (two in this embodiment) rails 19 provided at a fixed position on the base 26. There is.

The bar cutting machine 16 is provided with a circular saw 20 for metal that is continuously rotationally driven by a circular saw drive motor (not shown) as a cutting tool, and a vertical mechanism (not shown) is used when cutting the deformed bar 14. It can be lowered or raised from its original position. The position where the circular saw 20 intersects with the deformed bar 14 when lowered is the cutting position A1.

The feed vise 18 includes a feed fixed vise claw 18a and a feed movable vise claw 18b provided so as to be close to and separated from the feed fixed vise claw 18a, and includes a hydraulic cylinder, a pneumatic cylinder, an electric motor, and the like. By driving the feed movable vise claw 18b by the feed vise actuator 18c composed of the above, the deformed rod member 14 is gripped by the feed vise 18. In the feed vise 18, the inner surface of the feed fixed vise claw 18a functions as a horizontal reference surface that is a reference for the horizontal (horizontal) position perpendicular to the deformed rod member 14 to be fed, and the feed fixed vise claw The horizontal receiving surface 18d between the 18a and the feed movable vise claw 18b functions as a height reference plane which is a reference of the position of the deformed rod member 14 to be fed in the height direction (longitudinal direction).

In the bar cutting machine 16 of the present embodiment, the main vise that grips the tip of the deformed bar 14 when cutting with the circular saw 20 is the entry vise 22 located on the feed vise 18 side with respect to the cutting position A1. , It is divided into an outgoing vise 24 located on the opposite side of the sending vise 18 with respect to the cutting position A1.

The inlet vise 22 is guided in a direction parallel to the deformed bar 14 by a plurality of rails 19 provided at a fixed position on the base 26, and when connected to the feed vise 18, the feed vise 22 is guided. It is provided with a clamper (not shown) that is reciprocated with the 18 in a predetermined stroke and grips the rail 19 by air pressure to fix the entry-side vise 22 in a predetermined position.

The feed fixed vise claw 18a and the feed movable vise claw 18b of the feed vise 18 are provided with a pair of gripping protrusions 18e and gripping protrusions 18f protruding toward the entry side vise 22, and the entry side vise 22 is provided with a pair of gripping protrusions 18e and gripping protrusions 18f. The end of the side fixed vise claw 22a and the entry side movable vise claw 22b on the feeding vise 18 side is partially deleted, and the feeding vise 18 can be gripped or pinched by the pair of gripping protrusions 18e and gripping protrusions 18f. The possible gripped portion 22e is formed in a stepped shape. The dimension of the gripped portion 22e in the gripping direction is larger than the maximum dimension of the deformed bar member 14. As a result, when the gripped portion 22e of the entry-side vise 22 is gripped by the pair of gripping protrusions 18e and the gripping protrusions 18f of the feed-in vise 18, the inlet-side vise 22 and the feed-in vise 18 connected to each other are gripped. , It is possible to move back and forth integrally by the feed drive device (not shown). The pair of gripping protrusions 18e and gripping protrusions 18f and the gripped portion 22e gripped by them function as a vise connecting device.

The entry-side vise 22 is provided so as to be able to approach and separate from the entry-side fixed vise claw 22a integrally formed with the support base 32 provided at the base 26 for fixing the position and the entry-side fixed vise claw 22a. It functions as a lateral gripping device provided with an entry-side movable vise claw 22b. The entry-side vise 22 was fed by the feed-in vise 18 by driving the entry-side movable vise claw 22b in the horizontal direction by the entry-side vise actuator 22c composed of a hydraulic cylinder, a pneumatic cylinder, an electric motor, and the like. The deformed rod member 14 is gripped. In the entry-side vise 22, the inner surface of the entry-side fixed vise claw 22a functions as the horizontal reference surface that is a reference for the horizontal (horizontal) position perpendicular to the deformed bar member 14 to be fed, and the entry-side fixing vise 22. The horizontal receiving surface 32a between the claw 22a and the entry-side movable vise claw 22b functions as the height reference surface which is a reference of the position of the deformed bar 14 to be fed in the height direction (longitudinal direction). ..

Further, the exit side vise 24 includes an exit side fixed vise claw 24a provided on the base 26 at a fixed position and an outlet side movable vise claw 24b provided so as to be close to and separated from the exit side fixed vise claw 24a. By driving the exit side movable vise claw 24b by the outlet side vise actuator 24c composed of a hydraulic cylinder, a pneumatic cylinder, an electric motor, etc., the two are fed by the feed vise 18 or the inlet vise 22. The deformed bar 14 is gripped from the lateral direction. In the exit side vise 24, the inner surface of the exit side fixed vise claw 24a functions as the lateral reference surface which is a reference for the horizontal (horizontal) position of the deformed bar member 14 to be fed, and the exit side fixed vise claw 24a The horizontal receiving surface 24d between the and the protruding side movable vise claw 24b functions as the height reference surface which is a reference of the position of the deformed rod member 14 to be fed in the height direction (longitudinal direction). The width dimension of the receiving surface 24d in the feeding direction is set small so that a part of the cut deformed bar 14 can be easily dropped.

Further, the entry-side vise 22 is provided with a vertical vise 30 for pressing the two deformed rods 14 from above and fixing the two deformed rods 14 with the receiving surface 32a in the vertical direction. ing. The vertical vise 30 evenly presses the support base 32 having a horizontal receiving surface 32a that functions as a support surface for supporting the pair of deformed rods 14 and the two deformed rods 14 on the support base 32. It includes a pressing mechanism 34 and a single drive actuator 36 that is composed of a hydraulic cylinder, a pneumatic cylinder, an electric motor actuator, and the like and drives the uniform pressing mechanism 34 in the vertical direction.

With the vertical vise 30, for example, at the time of cutting, a portion of the portion in the longitudinal direction of the deformed bar 14 that is adjacent in the feeding direction of the portion gripped by the entry-side vise 22 is between the horizontal receiving surface 32a and the uniform pressing mechanism 34. It is designed to be pinched in the vertical direction. In this embodiment, as shown in FIG. 1, the feed vise 18 side in the feed direction of the portion gripped by the inlet vise 22 of the two deformed rods 14 is sandwiched by the vertical vise 30 and the inlet vise. The cut portion of the deformed bar 14 between the 22 and the exit side vise 24 is cut by the circular saw 20.

FIG. 2 is a plan view showing a main part of the bar material drawing device 38, FIG. 3 is a front view showing a main part of the bar material drawing device 38, and FIG. A side view showing a main part excluding the intermediate plate lateral movement support device 74, and FIG. 5 is a front view showing the intermediate plate vertical movement support device 72 and the intermediate plate lateral movement support device 74.

The bar drawing device 38 grips the tip of the deformed bar 14 and pulls it out from the bar cutting machine 16 in order to cut with a relatively long preset cutting length, and cuts the deformed bar 14 in a preset manner. It is a device that positions the cutting site for cutting with a long length at the cutting position A1 of the bar cutting machine 16.

As shown in FIG. 4, the bar pulling device 38 is a pair of rails 42 and a rack provided in a fixed position frame 40 in parallel with each other along the longitudinal direction, that is, the horizontal feeding direction of the two deformed bars 14. The 44, the moving table 46 supported and guided by the rail 42 via the slider 45, and the gripping device (horizontal vise) 48 for the deformed bar 14 mounted on the moving table 46 are provided, and the bar is provided by the gripping device 48. With the tips of the two deformed rods 14 having the same end faces sent out from the material cutting machine 16 being gripped from the lateral direction (horizontal direction), the two deformed rods 14 are moved by moving the moving table 46. It is pulled out horizontally to a cutting position for cutting by the bar cutting machine 16 with a predetermined cutting length.

As shown in FIG. 3, the moving table 46 is driven to move the moving table 46 by rotationally driving the pinion shaft 52 having the pinion 50 that meshes with the rack 44 and the pinion shaft 52 via the timing belt 54. A mobile platform drive device 58 including a motor 56 is provided. Further, as shown in FIG. 4, the gripping device 48 is supported on the moving table 46, and the gripping device support table 62 is provided so as to be movable between the upper position and the lower position via the slide device 60. A vertical drive device 64 including a cylinder for driving the gripping device support 62 between the upper position and the lower position by hydraulic or pneumatic pressure is provided. The slide device 60 includes a rail 60a fixed to the gripping device support 62 in the vertical direction and a slider 60b fixed to the moving table 46 and guided by the rail 60a.

The gripping device support 62 is provided with a gripping device 48 via a lateral positioning device 66 for positioning the gripping device 48 by moving it between two positions in the horizontal (horizontal) direction orthogonal to the rail 42. The lateral positioning device 66 includes a rail 66a fixed to the gripping device 48 in the horizontal (horizontal) direction orthogonal to the rail 42, a slider 66b fixed to the gripping device support 62 and guided by the rail 66a, and a fixed vise. It is provided with an escape cylinder 66c that allows the claw 48b to escape to a position where it does not interfere with the deformed rod member 14.

As shown in FIG. 4, the bar material drawing device 38 is provided with a receiving roller 68 that receives the tip ends of a pair of deformed bar members 14 sent out from the bar material cutting machine 16. The outer peripheral surface 68a of the receiving roller 68 functions as a support surface for supporting the tip portions of the pair of deformed rod members 14.

The gripping device 48 faces the main body plate 48a in which the rail 66a is fixed on the upper surface, the fixed vise claw 48b fixed on the lower surface of the main body plate 48a, and can approach and separate from each other. Two deformed rods 14 provided with a movable vise claw 48c and a vise actuator 48d, which is a cylinder for driving the movable vise claw 48c using hydraulic or pneumatic pressure, and mounted on the outer peripheral surface 68a of the receiving roller 68. Grip from the side.

As shown in FIGS. 3 and 5, the gripping device support base 62 has an intermediate plate 70, and two deformed rods 14 mounted on the outer peripheral surface 68a of the receiving roller 68 functioning as a support surface. The intermediate plate 70 is placed between the lowering position between the parts scheduled to be gripped by the gripping device 48 and the upper retracting position between the parts scheduled to be gripped by the gripping device 48 of the two deformed rods 14. An intermediate plate vertical movement support device 72 for moving and an intermediate plate lateral movement support device 74 for supporting the intermediate plate 70 so as to be movable in the lateral direction when the intermediate plate 70 is in the lowered position are provided.

The intermediate plate vertical movement device 72 penetrates the base plate 78 and the guide block 80 movably supported in the lateral direction and the guide block 80 in the vertical direction by the support plate 76 projecting from the gripping device support base 62. Fixed to the lower ends of the pair of guide rods 82, the intermediate plate 70 is fixed to the guide plate 84 and the base plate 78 protruding downward, and the upper end of the guide rods 82 is driven in the vertical direction via the joint 85. The upper and lower cylinders 86 are provided.

The intermediate plate lateral movement support device 74 is fixed to the above-mentioned support plate 76 that movably supports the base plate 78 and the guide block 80 in the lateral direction, and the gripping device support base 62, and is fixed to the gripping device support base 62, and the guide block 80 is fixed via a floating joint 88. A horizontal cylinder 92 having a rod 90 connected to the rod 90.

As shown in FIG. 3, the bar material drawing device 38 separates the gripping portions of the two deformed bar members 14 by the gripping device 48 from each other prior to gripping the two deformed bar members 14 by the gripping device 48. The bar material expanding device 94 is provided. As shown in FIGS. 2 and 3, the bar material expanding device 94 is provided with a wedge-shaped expanding member 96 inserted from below between the two deformed rod members 14 at the tip thereof, and is provided around a horizontal axis. It has a rotating arm 100 fixed to a rotating rotating shaft 98, and a rotating cylinder 102 that reciprocates the rotating shaft 98 so as to move the tip of the rotating arm 100 up and down, and has an intermediate plate. Before moving the intermediate plate 70 to the lowering position by the vertical movement device 72, the expansion member 96 is inserted between the two deformed rods 14 to expand the intermediate plate 70.

As shown in FIG. 1, the bar cutting device 12 performs a cutting operation of the two deformed bars 14 by the bar cutting machine 16 and a drawing and positioning operation of the two deformed bars 14 by the bar drawing device 38. An electronic control device 110 for controlling is provided. The electronic control device 110 is a movable vise in a state where the intermediate plate 70 is moved to the lowering position by the intermediate plate vertical movement device 72 prior to gripping by the pair of fixed vise claws 48b and the movable vise claws 48c shown in FIG. It also functions as a vise drive control device that moves the claw 48c toward the fixed vise claw 48b. In the following, the control operation of the gripping device 48 of the bar material drawing device 38 according to the command of the electronic control device 110 will be described with reference to the time chart of FIG.

First, in the initial section (A), the gripping device 48 is positioned on the outer peripheral surface 68a of the receiving roller 68 of the bar material drawing device 38, and the movable vise claw 48c of the gripping device 48 is separated from the fixed vise claw 48b and gripped. The device 48 is opened, and the gripping device 48 is positioned by the relief cylinder 66c at a relief position where the fixed vise claw 48b of the gripping device 48 does not interfere with the two deformed bar members 14 sent out from the bar cutting machine 16.

Next, the two deformed rods 14 clamped to the feeding vise 18 are sent out from the bar cutting machine 16, and the tip of the deformed bar 14 is placed on the outer peripheral surface 68a of the receiving roller 68 of the bar drawing device 38. When it arrives, the feed is stopped. Section (B) of FIG. 6 shows this state. In the following section (C), the wedge-shaped expanding member 96 of the bar material expanding device 94 is inserted between the two deformed bar members 14 from below, and the space between the two deformed bar members 14 is widened.

In the next section (D), the intermediate plate 70 located between the two deformed rods 14 by the horizontal cylinder 92 and located on the side of the fixed vise claw 48b is lowered by the upper and lower cylinders 86, 2 It is located between the odd-shaped rods 14 of the book. 7 and 8 show this state. In the following section (E), the intermediate plate 70 lowered between the two deformed rods 14 is moved to the movable vise claw 48c side by the horizontal cylinder 92.

Next, in the section (F), the wedge-shaped expansion member 96 is lowered from between the two deformed rods 14, and in the subsequent section (G), the thrust of the horizontal cylinder 92 is set to zero, so that the intermediate plate 70 is used. The gripping device 48, which was located in a relief position that does not interfere with the two deformed rods 14, is moved to the gripping position by the relief cylinder 66c, and the movable vise claw 48c is moved by the vise actuator 48d. Is moved toward the fixed vise claw 48b, and the two deformed rods 14 are gripped (clamped) by the gripping device 48. 9 and 10 show this state.

In the gripping process by the gripping device 48, the movable vise claw 48c comes into contact with the deformed bar 14 on the movable vise claw 48c side of the two deformed bar members 14, and the deformed bar 14 on the movable vise claw 48c side is brought into contact with the deformed bar 14 on the movable vise claw 48c side. The intermediate plate 70 is in contact with the intermediate plate 70, the intermediate plate 70 is in contact with the deformed rod 14 on the fixed vise claw 48b side of the two deformed rods 14, and the deformed rod 14 on the fixed vise claw 48b side is in contact with the fixed vise claw 48b. By abutting against, they are pinched and fixed in close contact with each other.

Then, in the section (H), the two deformed rods 14 are released from the feeding vise 18 by being unclamped by the feeding vise 18, and the two deformed rods whose tips are gripped by the gripping device 48. After the material 14 is pulled out from the bar cutting machine 16 so that the cutting portion for cutting at the preset cutting length is positioned at the cutting position A1 of the bar cutting machine 16, the two deformed bar 14 Is cut at the cutting position A1 of the bar cutting machine 16.

Incidentally, FIG. 11 shows a state before gripping the gripping device 148 of the comparative example without using the intermediate plate 70, and FIG. 12 shows a state after gripping the gripping device 148 of the comparative example without using the intermediate plate 70. There is. When the intermediate plate 70 is not used, the two deformed rods 14 are pressed against each other by the fixed vise claw 148b and the movable vise claw 148c, so that the tip of the protrusion 14a of one deformed rod 14 is the other. The deformed bar 14 slides down into the valley between the protrusions 14a, the two deformed bars 14 are displaced from each other in the longitudinal direction, and the two deformed bars have a difference in cutting length Δt.

FIG. 13 is a schematic plan view showing a state after the gripping device 48 grips one deformed bar 14 in a state where the intermediate plate 70 is retracted. FIG. 14 is a schematic cross-sectional view showing a state after the gripping device 48 grips one deformed bar 14 in a state where the intermediate plate 70 is retracted.

As described above, the gripping device 48 of the deformed bar 14 of the present embodiment uses a pair of fixed vise claws 48b and a movable vise claw 48c that are opposed to each other and can be approached and separated from each other, and a pair of fixed vise claws 48b. A device for gripping a deformed bar 48, which is placed on a support surface 68a between the movable vise claws 48c and laterally grips two deformed bars 14 having a plurality of protrusions 14a formed in the longitudinal direction. The lowering position between the parts of the two deformed rods 14 having the intermediate plate 70 and placed on the support surface 68a and scheduled to be gripped by the gripping device 48, and the two deformed rods. An intermediate plate vertical movement device 72 that moves the intermediate plate 70 between the upper retracted positions between the parts scheduled to be gripped by the gripping device 48 of the material 14, and the intermediate plate 70 when the intermediate plate 70 is in the lowered position. The intermediate plate 70 is moved to a lower position by the intermediate plate vertical movement device 72 prior to being gripped by the intermediate plate lateral movement support device 74 that movably supports the intermediate plate laterally, and the pair of fixed vise claws 48b and the movable vise claw 48c. It includes an electronic control device (vise drive control device) 110 that moves the movable vise claw 48c toward the fixed vise claw 48b in the state of being moved.

Therefore, the movable vise claw 48c is moved toward the fixed vise claw 48b while the intermediate plate 70 is moved to the lowered position by the intermediate plate vertical movement device 72, so that the two deformed rods 14 are formed. Be grasped. Since the two deformed rods 14 do not come into direct contact with each other because the intermediate plate 70 is interposed between them, the tip of the protrusion 14a of one of the deformed rods 14 is the protrusion of the other deformed rod 14. The two deformed rods 14 do not slide down into the valley between 14a and are not displaced from each other in the longitudinal direction, and there is no difference Δt in cutting length between the two deformed rods 14.

According to the gripping device 48 of the deformed bar 14 of the present embodiment, before the intermediate plate 70 is moved to the lowering position by the intermediate plate vertical movement device 72, the wedge-shaped expansion member 96 is 2 by the bar expansion device 94. It is inserted from below between the deformed rods 14 of the book and expanded. As a result, the intermediate plate 70 is smoothly inserted between the two deformed rods 14.

According to the gripping device 48 of the deformed bar 14 of the present embodiment, the gripping device 48 grips the tip portions of the two deformed bars 14 having the same end faces sent out from the bar cutting machine 16. The gripping device 48 is provided on a moving table 46 guided by a rail 42 provided along the longitudinal direction of the two deformed rods 14, and the movement of the moving table 46 causes the two deformed rods 14 to move. It is pulled out to a cutting position for cutting with the bar cutting machine 16 with a predetermined cutting length. As a result, the long deformed bar members 14 are accurately cut, and there is no difference Δt in the cutting lengths of the long deformed bar members 14.

According to the gripping device 48 of the deformed bar 14 of the present embodiment, the rack 44 is provided in parallel with the rail 42, and the moving table 46 is driven by rotating the pinion 50 that meshes with the rack 44. The moving base drive device 58 for moving the gripping device 58, the gripping device support base 62 provided so as to be movable between the upper position and the lower position while supporting the gripping device 48, and the gripping device support base 62 in the upper position and the lower position. A vertical drive device 64 that drives to and from the position is provided. As a result, the gripping device 48 is pulled up to a cutting position for cutting by the bar cutting machine 16 with a predetermined cutting length, and then pulled up to the upper position. It is quickly returned to the original withdrawal start position.

According to the gripping device 48 of the deformed bar 14 of the present embodiment, the gripping device 48 supports the gripping device via a lateral positioning device 66 that positions the gripping device 48 by moving it in the lateral direction orthogonal to the rail 42. It is provided on the table 62. As a result, the gripping device 48 is moved to a position where the two irregularly shaped rods 14 having the same end faces sent out from the bar cutting machine 16 and the fixed vise claw 48b of the gripping device 48 do not interfere with each other by the lateral positioning device 66. The fixed vise claw 48b is positioned.

Next, another embodiment of the present invention will be described. In the following description, the same reference numerals are given to the parts common to the above-described first embodiment, and the description thereof will be omitted.

FIG. 15 is a diagram for explaining the intermediate plate vertical movement device 172 and the intermediate plate lateral movement support device 174 of this embodiment, and is a diagram corresponding to FIG. In this embodiment, the deformed bar gripping device 48 grips the three deformed bars 14, and instead of the intermediate plate vertical movement device 72 and the intermediate plate lateral movement support device 74, the intermediate plate vertical movement device 172 and the intermediate plate vertical movement support device 74 are replaced. It differs from the above-described first embodiment in that the intermediate plate lateral movement support device 174 is provided. The intermediate plate vertical movement device 172 has two intermediate plates 70 and 170, and is a descending position between the parts scheduled to be gripped by the gripping device 48 among the three deformed rods 14 mounted on the support surface. And the upper retracted position between the parts scheduled to be gripped by the gripping device 48 of the three deformed rods, the two intermediate plates 70 and 170 are moved. Further, the intermediate plate lateral movement support device 174 supports the intermediate plates 70 and 170 so as to be movable in the lateral direction, that is, movably, when the intermediate plates 70 and 170 are in the lowered position. The bar material expanding device 94 of this embodiment is provided with two expanding members 96.

A rail 176 is fixed to the guide plate 84 on which the intermediate plate 70 is projected downward, and the intermediate plate 170 is fixed to a slider 178 movably supported by the rail 176 in the lateral direction. As a result, the intermediate plate 170 is supported so as to be movable in the lateral direction independently of the intermediate plate 70. As a result, when the three deformed rods 14 are gripped from the lateral direction by the gripping device 48, the pair of intermediate plates 70 and 170 and the deformed rods 14 located in the middle of the three deformed rods 14 Since they are interposed between the deformed bar located on the right side and the deformed bar 14 located on the left side, the same effect as that of the first embodiment can be obtained.

Although the examples of the present invention have been described in detail with reference to the drawings, the present invention also applies to other aspects.

For example, in the above-described embodiment, the gripping device 48 capable of gripping the pair of deformed rods 14 from the lateral direction without causing a gap between them is the feed vise 18 and the entry side vise 22 of the rod cutting machine 16. , May be applied to any one of the outgoing vise 24.

Further, the bar cutting machine 16 uses a circular saw 20 as a cutting tool, but another type of cutting tool, for example, a bar-shaped gold saw having straight saw teeth or a cutting grindstone is used. It may be.

Further, in the above-described embodiment, the bar cutting machine 16 is provided with the entry-side vise 22 and the exit-side vise 24, but is not provided with at least one of the entry-side vise 22 and the exit-side vise 24. There may be.

Further, the above-mentioned deformed bar gripping device 48 of the first embodiment grips two deformed rods 14, and the above-mentioned deformed bar gripping device 48 grips three deformed rods 14. However, the gripping device 48 may grip four or more deformed rods 14.

Although not illustrated one by one, the present invention is carried out with various modifications without departing from the spirit of the present invention.

12: Bar material cutting device 14: Deformed bar material 14a: Convex 16: Bar material cutting machine 38: Bar material drawing device 42: Rail 44: Rack 48: Deformed bar material gripping device 48b: Fixed vise claw 48c: Movable vise Claw 50: Pinion 58: Moving table drive device 62: Gripping device support table 68: Receiving roller 68a: Outer peripheral surface (support surface)
70, 170: Intermediate plate 72, 172: Intermediate plate vertical movement device 74, 174: Intermediate plate lateral movement support device 94: Bar expansion device 96: Expansion member 110; Electronic control device (vice drive control device)

Claims (5)

Using a pair of fixed vise claws and movable vise claws that are opposed to each other and can be approached and separated from each other, a protrusion placed on a support surface between the pair of fixed vise claws and movable vise claws is longitudinally It is a gripping device for deformed rods that grips a plurality of formed deformed rods from the lateral direction.
A lowering position between a portion of the plurality of deformed rods having one or more intermediate plates and placed on the support surface and scheduled to be gripped by the gripping device, and the plurality of deformed rods. An intermediate plate vertical movement device for moving the intermediate plate between the upper retracted positions between the parts scheduled to be gripped by the gripping device for the bar material, and an intermediate plate vertical movement device.
An intermediate plate lateral movement support device that movably supports the intermediate plate in the lateral direction when the intermediate plate is in the lowered position,
Prior to gripping by the pair of fixed vise claws and movable vise claws, the movable vise claws are moved toward the fixed vise claws in a state where the intermediate plate is moved to the lowering position by the intermediate plate vertical movement device. A vise drive control device, and a gripping device for deformed rods, which comprises. One or two or more expansion members to be inserted from below are provided between the plurality of deformed rods, and the expansion member is moved before the intermediate plate is moved to the lowering position by the intermediate plate vertical movement device. The gripping device for a deformed bar according to claim 1, further comprising a bar expanding device for inserting and expanding the deformed bar between the plurality of deformed bars. The gripping device grips the tips of the plurality of deformed rods having the same end faces sent out from the bar cutting machine.
The gripping device is provided on a moving table guided by rails provided along the longitudinal direction of the plurality of rods, and the plurality of deformed rods are predetermined by the movement of the moving table. The gripping device for a deformed bar according to claim 1 or 2, wherein the bar is pulled out to a cutting position for cutting with the bar cutting machine at a cutting length. A rack is provided parallel to the rail,
The moving table is provided with a moving table driving device that moves the moving table by rotationally driving a pinion that meshes with the rack, and a movable table that can be moved between an upper position and a lower position while supporting the gripping device. The gripping device support base and the vertical drive device for driving the gripping device support base between the upper position and the lower position are provided. Device. The gripping device according to claim 4, wherein the gripping device is provided on the gripping device support base via a lateral positioning device for positioning the gripping device by moving the gripping device in the lateral direction orthogonal to the rail. A gripping device for deformed rods.

Images