JPH03221665A - Method and device for binding reinforcing bar - Google Patents

Abstract

PURPOSE:To carry out the work of binding reinforcing bars in a short time by storing in the arc of a spiral spring the portion of each reinforcing bar to be bound, and binding the reinforcing bars using a reversal spring and, or a reversing mechanism as a binding member. CONSTITUTION:The end portion of a spiral spring 1 is extended while being spread out and the spiral spring 1 is turned so that the arc of the spring 1 surrounds the portion of each reinforcing bar 2 to be bound. The reinforcing bars 2 are bound together using a binding device having the spiral spring 1 stored therein, and a reversal spring or a shape-memory alloy as a binding member. The work of binding the reinforcing bars together is thus carried out in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method of tying reinforcing bars, a tying member, and an apparatus.

``Prior art'' Despite the fact that various devices, binding members, methods, etc. have been devised as methods for binding reinforcing bars, simple tools such as binding wire and backers are still used for boat fishing. Only manual binding methods are used.

"Problems to be Solved by the Invention" Although many binding devices and methods using various shapes of binding metal fittings and wire rods as binding members are known, the reasons why they have not been put into practical use are as follows. Guessed.

First of all, it takes less than - seconds for a skilled reinforcing bar worker to tie the reinforcing bars by hand using tie wires, which is a general conventional technique, and it is difficult for a less skilled reinforcing bar worker to do it. In this case, it will cost several times as much. Similar differences can also be seen in their ability to form a bonded state.

Furthermore, the tools and materials used in this process are both inexpensive and lightweight.

However, the shortage of skilled workers, which is a social condition of boat fishing, is no exception even in reinforcing steel work, and there are inexpensive and lightweight binding methods and devices that can be easily used by general engineers who are not familiar with the technology.
Expectations are rising for metal fittings and other products.

Although many techniques have been invented in the past, none of them have yet been put into general practical use. Many of these known techniques have problems in price, cost, weight, easy operability, versatility, etc.

An object of the present invention is to provide a bundling method and device that is economical, simple, compact, and lightweight.

"Means for solving the problem" When devising binding members, methods, and devices, make sure that they can be easily handled by amateurs, regardless of gender, and that they do not use external energy and have simple mechanisms as much as possible. I took care of things.

Among the means used for this purpose, we reconsidered the binding method by reviewing the reaction force of the spiral spring and the memory shape restoring force of the shape memory alloy, and simplified the members, devices, tools, etc. We aimed to In addition, in order to reduce the weight and price of the device, we tried to reduce the number of component parts and component weight to the utmost, and pursued the principles to create a simple and clear mechanism structure.

"Example" (Example 1) A method for tying reinforcing bars, characterized in that the part of the reinforcing bars to be bound is housed within an arc of a spiral spring.

The spiral spring 1 in the shape shown in Fig. 1 is expanded against the spring force into the shape shown in Fig. 2, held in a single arc shape, and is held astride the reinforcing bars 2 to be tied together as shown in Fig. 3. , the helical spring 1
By releasing the enlarged holding state, the binding state shown in FIG. 4 is obtained. The diameters of the reinforcing bars 2 to be bundled are 16 mm and 13 mm, respectively.
mm, the latitude and longitude are 29 mm, and the inner diameter of the spiral Cf thread 1 is 2B++
I used one from u++. Also, a low-load spring was used as the type of spring, and a plate-like spring was used as the basic shape of the spring, but it goes without saying that it does not matter whether it is a round, linear or helical spring.

In addition, as shown in Fig. 5, the end of the helical spring 1 is expanded slightly and let out so that the arc of the ζf spring surrounds the part 2 of the reinforcing bars to be bound, and the helical spring 1 is moved as shown by the arrow in Fig. 6. The bundled state shown in FIG. 7 can also be obtained by turning the reinforcing bars in the direction of , and wrapping the reinforcing bars around the part to be bundled a sufficient number of times for binding.

Furthermore, when using this binding method, it is also possible to use the following devices. FIG. 8 is an example of a binding device that accommodates an enlarged spiral spring. In the figure, 1 is a cut spiral spring, 2 is a reinforcing bar, 3 is a device case, 4 is a mounting lever, and 5 is a spring, and the shape of the bundle is the same as in FIGS. 3 and 4 of this example. Spiral spring expansion device and storage and carrying of enlarged spiral spring
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Technique 1 Furthermore, as shown in FIG. 9, bundling using springs having a circular shape or an arc shape less than a circle can be similarly performed by changing the settings of the spring cord characteristics.

(Example 2) A method for tying reinforcing bars characterized by using a reversing spring or a reversing mechanism in the tying member.

The bundling method using a bundling fitting having the shape shown in Fig. 10 uses a reversal spring 1 as a bundling member to bind reinforcing bars 2. At this time, a reversible spring-like member is used in the center of the upper surface to bind the reinforcing bars 2 in the normal state. The strength and thickness are set so that the central part forms a concave part, but by pushing the concave part upward to form a convex part, the binding member has a shape with the lower part closed as shown in Fig. 11. This makes it possible to bind reinforcing bars as shown in Figure 12.

In this example, inversion is achieved by making the ratio of the actual surface area to the horizontal projected area of the uneven part larger than that of the surrounding area of the inverted spring-like uneven part, and by making the thickness of the uneven part thinner than the surrounding area. Set to get the effect 1. tT-Kan 12
Sono-Kan 1 Δ Group? No. lfh six? This is an example of a binding method using a reversing force. An inverted part is provided in the center of the top surface, and the same effect as cross-hanging using binding wire can be obtained.

(Example 3) A method of binding reinforcing bars using shape memory alloy as a binding member.

By using a shape memory alloy as the metal for binding reinforcing bars and setting the shape in the memory restored state to be the shape shown in the present invention as illustrated in FIGS. 15, 16, and 17, reinforcing bars can be easily tied together. can perform binding work.

An example of a binding member using a shape memory alloy will be described. First, the shape memory state and shape recovery state due to temperature are
At the initial room temperature, it will be in the state shown in Figure 15, and at a high temperature of about 90 degrees C, it will be in the state shown in Figure 16, and after it is attached to the reinforcing steel, the temperature will naturally drop, and at room temperature it will be in the state shown in Figure 17. By setting as described above, it becomes possible to perform a reinforcing bar binding method using a shape memory alloy as a binding member. Also, depending on the setting, the 15th
Figures 15 and 16 assume that the state in the figure is a low temperature below zero degree C.
It is possible to adopt a usage method in which the setting shape is the same as shown in the figure, the state is in the state shown in FIG. 16 at room temperature, and when heated or cooled, it becomes the state shown in FIG. 17, and thereafter it does not deform.

According to the present invention, even if the shape of the binding member is not described in this example, it is possible to use a round plus simple hook type, triangular type, or other types of binding metal fittings.

In addition, in order to heat and deform the binding and binding members that are attached to the reinforcing bars, it is also possible to apply a low-cost heat source such as a ceramic heater to only the parts that need to be heated in advance, and then directly apply electricity to deform and bundle the materials after installation. It is possible.

In order to supply and attach the binding member in a heated or cooled state, a simple container with an outlet as shown in FIG. 18 can be considered.

In FIG. 18, 1 indicates a binding member made of a shape memory alloy, 2 a heat source generating unit, 3 a button for taking out the binding member and attaching it to a reinforcing bar, and 4 a heat insulation case.

(Embodiment 4) Equipped with a storage part for storing a continuous spiral spring, a mechanism for feeding out the stored spiral spring, a mechanism for controlling the turning state of the spiral spring, and a cutting part for the spiral spring. A reinforcing bar binding device featuring:

The basic functional configuration is a grasping part 1, a shaft 2 connected to the grasping part 1, a case 3, a main body 4, a return spring 5,
Spiral spring holder 6, ratchet part 7, rotating part for feeding mechanism 8, threaded spring cutting part 9, cutter 10, cutter return spring 11, threaded spring guide ring tube arm part 12, threaded spring guide tube 13, screw It consists of a spiral spring guide ring tube 14, a spiral spring guide ring tube stopper 15, and a reinforcing bar resting part 16.

The operation of this device will be explained based on FIG.

Holding the grasping part 1 of this device, apply the reinforcing bar applying part 16 to the part of the reinforcing bars to be bound, and press the grasping part 1 in the direction of the reinforcing bars, thereby dividing the spiral spring guide ring tube 14 into four parts and opening it. is pressed upward by the spring at the same time as it surrounds the part of the reinforcing bars to be bundled. After this, by continuing to press the grasping part, the rotating part 8 for the feed mechanism is rotated by the spiral between the rotating part and the shaft 2. The helical spring holder 6 is attached to the upper part of the rotating part 8 via a ratchet 7.
The bent portion of the upper end of the spiral spring 18 is caught in the vertical slit of the spiral spring holder, which rotates at the same time, and rotates as the holder 6 rotates, and the entire spiral spring descends according to the amount of spring sent out. A cutter with a tapered shaft, in which the lower end of the spiral spring inserted into the guide tube 13 passes through the spiral spring cutting section 9, the spiral spring guide tube, and into the spiral spring guide ring tube 14. When the push-out arm is reached, the reinforcing bars have been wound around the reinforcing bars to be tied a sufficient number of times by the helical spring, and the helical spring operates in the final stage of the shaft pushing down movement at the cutting section 9. The helical spring guide ring tubes are cut by the cutter 10 assembled as shown in FIG.
x+lNIC:L61111! Standing up love 1. ? 1. 〆、）↓ri-r4 Ino rII ring tube is released from its integrally fixed state, the gripping part stops pressing and the device body is lifted up, the gripping part is pushed up by the return spring, and at this time the spiral spring rotates. is ratchet part 7
The spiral retractable gear provided on the shaft is tilted downward only when the shaft is raised and does not rotate, and the spiral spring holder is restrained by a rotation limiting brush provided on its outer periphery. The helical spring guide ring tube 14 is opened into four semicircular arcs by the spring, and the helical spring surrounding the reinforcing bar released from the helical spring guide ring tube 14 expands the arc by its own contracting spring force. One process is completed by shrinking and restraining the reinforcing bars. The resulting bundled state has the shape shown in FIG. 4.

In this embodiment, the feeding method of the spiral spring feeding mechanism is a spiral spring feeding method as shown in Fig. 25 by transmitting the rotational force of the rotating part for the feeding mechanism to the meshing gear-like wire rod feeding mechanism. I can do things. Furthermore, when using the cartridge method, a case is not required. Furthermore, when using a cut spiral spring as a binding member, the cutting part can be omitted.

(Example 5) In a reinforcing bar tying device using a tying wire, a tying wire bending section or a tying wire turning guide section, a tying wire cutting section, a reinforcing bar contacting section, a tying wire turning and tightening section, a tying wire feeding mechanism, and a grasping section are provided. Prepare,
A reinforcing bar tying device that is characterized in that tying work can be completed only by linear reciprocating motion or handle rotation motion, using only input without using external energy.

The main components of the apparatus according to the present invention in FIG.
0 and a spinner 13 for tightening the wound binding wire;
It consists of a setter 15 for setting the spinner at a predetermined position, a cutter 11 for cutting the binding wire at each location, a reinforcing bar patch part 1, a main body case 28, and a binding wire storage part 29.

The mechanism and operation will be explained. By pressing the reinforcing bar contact part 1 against the reinforcing bar 2 and pressing the grasping part 3 in the direction of the reinforcing bar, the linear gear 4 connected to the grasping part moves in the direction of the reinforcing bar. A large-diameter gear 30 connected in parallel to the small-diameter gear in which the gear 5 rotates drives a binding wire feeding gear 6 located at right angles to the large-diameter gear via a gear 31, and the cable is fed through a tube 7. Rounded part 1 at the tip of the device that feeds the binding wire 9 to the tip 8 on the reinforcing bar side
The binding wire extruded from the tube 0 passes through a cutting section 12 with a cutter 11, passes through a claw-like tip 14 of a spinner 13, and winds around the reinforcing bar several times. At the same time as the winding starts, the linear gear shifts to gear 32 in the clutch engaged state.
By spinning the setter 15 and pressing it against the reinforcing steel through the spinner, the spinner is set in a steady state at a fixed position.

As a result, the spinner is set so that the claw at the tip is in a horizontal position and the binding wire is wound between the two closing claws.Furthermore, the gear 32 releases the clutch and holds the setter 15 in a free rotation state. The pusher in the direction and the resetter are fixed by a stop pin, so that the spinner pulls the annularly wound binding wire 17 towards the grasping part by the spring 18, and at the same time the linear gear is
The spinner is rotated via the two gears 19, and the annular binding wire 17 wound around the reinforcing bars is turned and tightened.As the tightening progresses, the swinging spinner is pulled toward the reinforcing bars by the binding wire. A screw that is movable in the axial direction on a shaft parallel to a linear gear and can freely rotate in a direction opposite to the tightening spin direction, and whose diameter decreases when the annular binding wire is sufficiently tightened and the torque increases. Since the tightening force is transmitted to the claw-shaped tip via the spiral spring 20, the arm portion 21, which is a part of the spinner inserted inside the spiral spring, is tightened, and as a result, the claw-shaped tip of the spinner is tightened. The part opens and separates from the tightened annular binding wire, which allows the tightening force of the binding wire to be kept constant and prevents the binding wire from becoming bent due to excessive twisting. Then, the spinner is attracted toward the grasping part by the spring 18. Immediately after this, the linear gear drives the gear of the cutting part, thereby operating the cutter, bending the binding wire into a radius shape, and placing it at the cutting part at the tip of the tube. Cut.

The resulting bundled state has the shape shown in FIG. 17(C). After this, when the pressing of the grasping part is stopped and the main body of the device is lifted, the grasping part and the linear gear are returned to the initial state by the return spring 24. At this time, of course, each mechanical part is moved in the opposite direction to the required function by the action of the clutch. It is a mechanism that is not affected by the movement of the machine or the movement or force after the work is completed. Note that a damper made of gas, liquid, rubber, etc. may be used in conjunction with the return operation using a spring. Fig. 23 shows the spinner in the closed state; Fig. 24 shows the spinner in the open state; Fig. 25 shows the wire binding section; and Fig. 26 shows the cutting section.

Furthermore, by replacing the linear reciprocating motion of this embodiment with the rotational motion of the handle, in a reinforcing bar tying device using wire rods, the tying wire rotation guide part, the tying wire cutting part, the reinforcing bar holding part, the tying wire tightening swivel part, the tying wire It is also possible to provide an input binding device that is equipped with a feeding mechanism and a grasping section, and is characterized in that the binding operation can be completed only by rotating the handle without requiring external energy.

"Effects of the Invention" When using the tying method or device according to the present invention, even a craftsman inexperienced in tying techniques can perform tying work in a short time.
Furthermore, it is possible to adopt a binding method that has little individual variation in the finished state of binding and is less tiring, and it is possible to provide an economically superior, easy-to-handle, and lightweight device.

[Brief explanation of drawings]

1 to 9 are diagrams relating to a binding method using a spiral spring (Example 1). FIG. 1 shows the helical spring in its normal state. FIG. 2 shows an arcuate helical spring expanded against the spring force. Figure 3 shows the reinforcing bars straddled just before binding. FIG. 4 shows a state in which the reinforcing bars are bound within the overlapping arcs of the spiral springs, which are contracted by the spring force and restored to their spiral shape. FIG. 5 shows one end of the helical spring opened and routed around the reinforcing bars to be bound. FIG. 6 is a diagram in which the remaining portion of the spiral spring in FIG. 5 is rotated to wind the reinforcing bar. Fig. 7 is a diagram showing the reinforcing bars being wound and tied as a result of Fig. 5.6. FIG. 8 shows an example of a binding device using a spiral spring. FIG. 9 shows an example of a binding method using an arcuate spring. In each of the above figures, 1 indicates a spiral spring, and 2 indicates a reinforcing bar. 10 to 14 are diagrams relating to a binding method using a reversing spring (Embodiment 2). In the figure, 1 indicates a binding material and 2 indicates a reinforcing bar. FIG. 15 to FIG. 17 are diagrams showing a binding method using a shape memory alloy (Example 3). FIG. 15 shows the shape of the binding member at room temperature. FIG. 16 shows the shape in the primary deformation state due to heat treatment or in the normal temperature state. FIG. 17 shows the bundled state. Sen 1q direction? This is an example of a strange tale of an old t-order. In FIG. 18, 1 is a shape memory alloy binding material, 2 is a heat source generating unit, 3 is a take-out/attach button, and 4 is a heat insulation case. FIG. 19 to FIG. 21 are diagrams relating to a binding device using a spiral spring (Embodiment 4). FIG. 19 is a sectional view of the entire device. FIG. 20 shows the helical spring guide tube ring in the open position. FIG. 21 is a side view of the spiral spring guide tube ring in a closed state. In FIGS. 19 to 21, 17 is a reinforcing bar, 18 is a binding wire (helical spring), and 14 is a guide ring tube. FIG. 22 to FIG. 26 are diagrams relating to a reinforcing bar binding device using binding wires (Embodiment 5). FIG. 23 shows the spinner in a closed state. FIG. 24 shows the spinner in an open state. FIG. 25 shows the wire binding section. Kan 9 R group? From Figure 22 to Figure 26, l is the reinforcing bar contact part 2 is the reinforcing bar, 3 is the grasping part,
5 is a small diameter gear, 6 is a feed wheel, 7 is a wire feed tube, 8
is the tip, 9 is the binding wire, 10 is the binding wire bending part, 11
is a cutter, 12 is a cutting part, 13 is a spinner, 14 is a claw-like tip, 15 is a setter, 7 is a wound binding wire, 18 is a sub I nong, 19 is a spinner gear part, 20
21 is a spiral spring, 21 is a spinner arm part, 24 is a spring, 26 is a wire binding part, 28 is a main body case, 29 is a wire binding storage case, 30 is a large diameter gear, 31 is a gear, 32 is a large diameter gear show.

Claims (5)

[Claims] (1) A method for tying reinforcing bars, characterized in that the part of the reinforcing bars to be tied is housed within the arc of a spiral spring. (2) A method for tying reinforcing bars characterized by using a reversing spring or a reversing mechanism in the tying member. (3) A reinforcing bar binding method using a shape memory alloy as a binding member. (4) Features include a storage part for storing a continuous spiral spring, a mechanism for feeding out the stored spiral spring, a mechanism for controlling the turning state of the spiral spring, and a cutting part for the spiral spring. A reinforcing bar binding device. (5) A reinforcing bar tying device using a tying wire, comprising a tying wire bending part or a tying wire turning guide part, a tying wire cutting part, a reinforcing bar contact part, a tying wire tightening turning part, a tying wire feeding mechanism, a grasping part, By input only, without using external energy,
A reinforcing bar gathering device that is characterized by the ability to complete the binding work with just a linear reciprocating motion or a rotating handle motion.