JPH089081B2 - Spiral product manufacturing equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing apparatus for manufacturing a spiral product by continuously bending a long rod-shaped or linear material at predetermined intervals, and more specifically, the above apparatus. The present invention relates to a cutting mechanism for cutting a spiral product manufactured by the above-mentioned material from the above material.

2. Description of the Related Art In the axial direction reinforcing bar embedded in a reinforced concrete column in building construction, another iron rod or steel rod may be spirally wound at a predetermined pitch.

The above-mentioned spiral reinforcing bar, so-called hoop reinforcing bar, has been conventionally manufactured by bending a steel bar or the like cut into a predetermined length with a press or the like at every pitch. Therefore, at the construction site, the ends of the hoop bars are welded or bundled to form a continuous spiral hoop bar, or this hoop bar is wound around the axial reinforcing bar while it is being formed and then welded or bundled and fixed. ing. However, the work using the hoop muscles for each one pitch has many drawbacks such as a large number of welding or binding points, which not only lowers the strength but also requires a lot of labor and cost. . Therefore, a continuous spiral hoop muscle is desired, and an apparatus for producing this spiral product is disclosed in Japanese Patent Publication No. Sho 57-2412.
The above manufacturing apparatus will be described below with reference to FIGS. 34 to 36.

In the drawing, (1) is a vertical posture provided over the upper frame (2) and the product pedestal (3) so as to contact the inner surface of the bent portion of the long rod-shaped body (S) that has stopped being transferred. Bending fulcrum member (hereinafter referred to as fulcrum member), (4)
Through the link arm (6), the chain (7), the spring (8), and the sprocket (9) which are coaxially fitted on the fulcrum member (1) and which are expanded and contracted by the air cylinder (5). Cylindrical body that can rotate in an appropriate angle range,
(10) is flatly attached to the lower end of the tubular body (4) in a state in which it can contact the outer surface of the bent portion of the rod (S), and according to the rotation of the tubular body (4). A member for a force point in an up-and-down posture that rotates around the fulcrum member (1) in an appropriate angular range (normally 90 ° range) in a horizontal or substantially horizontal plane in forward and reverse directions, and (11) is a member for the force point ( 10) Auxiliary pressing member in a vertical posture that presses the central portion in the longitudinal direction of the rod portion (Sa) to be processed with the positive rotational movement of (1), (1
2) is a stopper piece for setting the supply amount of the rod-shaped body (S), (13) is a fixed blade (14) and an air cylinder (15).
2 shows a cutting device including a movable blade (16) that is slidable in a direction perpendicular to the transport direction of the long rod-shaped member by expanding and contracting.

The spiral product (S) is manufactured in the following manner in the apparatus having the above configuration.

First, the rod-shaped body (S) is brought into contact with the stopper piece (12).
Is transferred and stopped. Then, the tubular body (4) is rotated counterclockwise by the operation of the air cylinder (5). Then, the force point member (10) presses the processed rod-shaped body portion (Sa) of the rod-shaped body (S) between the fulcrum member (1) and the fulcrum member (1). The rod-like body portion (Sa) to be processed is bent to a shape along the fulcrum member (1) by rotationally moving around.
If the spiral intermediate product (workpiece) (W) with a desired number of turns is produced by repeating the above operation,
The air cylinder (15) is operated, and the work (W) is separated from the rod-shaped body (S) by the cutting mechanism (13) to obtain a desired spiral product.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the bending mechanism of the manufacturing apparatus described above, the cylindrical body (4) is coaxially fitted onto the fulcrum member (1) and the lower surface of the cylindrical body (4) is used for force application. Since the member (10) is mounted flat, the cutting mechanism (13) needs to be mounted separately from the tubular body (4).

Therefore, after bending the final bent corner of the spiral product,
When the spiral product is separated from the rod-shaped body (S) by the cutting mechanism (13), the length of the cut end from the final bent corner portion becomes long. Therefore, since the hook portion formed at the end portion of the spiral product (P) by utilizing this cutting end portion may have an extremely short dimension that can be locked to the axial reinforcing bar, the cutting by the above-mentioned cutting mechanism (13). In that case, there is a problem that there are many unnecessary portions and the yield is reduced.

Further, in order to shorten the unnecessary portion at the time of cutting in the above manufacturing apparatus, after the final bending, the work (W) is once moved in the opposite direction along the supply direction and then the work (W) is bar-shaped ( Separate from S) to obtain the desired spiral product.

Further, conventionally, as a material cutting position as close as possible to the bending position of the material, JP-A-58-176037 is known, but this method, the root side of the material,
Although it is restrained and held, since the end of the work to be separated is left as a free end, it is not possible to prevent the work from scattering due to shear reaction force, and when obtaining spiral products, there is a drawback that deformation and distortion occur. is there.

Means for Solving Problems The present invention has been made in view of the above problems, and a long continuous rod-shaped or linear material that is intermittently supplied as appropriate is horizontally bent at appropriate intervals by a bending mechanism. In a manufacturing apparatus for manufacturing a spiral product having a desired number of turns by repeatedly bending at a predetermined angle, a through hole for holding a bent R portion of a material at a front end and introducing the material toward the bent R portion at a rear end. And a holding member that holds the core metal and has a through hole that communicates with the through hole of the core metal on the rear end side of the core metal, and is arranged adjacent to the rear end of the holding member. A cylindrical fixed blade having a material insertion hole communicating with the through hole of the holding member and a rear end of the through hole of the holding member for shearing the material by sliding contact with the tip of the fixed blade. And a plate blade, and the plate blade is moved integrally with the core metal by a holding member. It is characterized in that the material is sheared.

Effect The present invention, when cutting the material, can cut the material while the end of the bent spiral work is restrained and held in the through hole of the core metal and the through hole of the holding member. It is possible to prevent scattering due to the shear reaction force, and it is possible to prevent deformation and distortion.

Then, the material can be cut at a position relatively close to the bent R portion of the core metal, and the amount of material used can be reduced.

Embodiment FIG. 1 to FIG. 33 show an embodiment of the spiral product manufacturing apparatus according to the present invention.

In the drawing, (A) is a bending mechanism for a rod-shaped or linear material (S) continuously supplied from a supply mechanism (B),
(C) is a cutting mechanism integrally attached to the folding mechanism (A), (D) is a stacker mechanism, (E) is a transfer mechanism attached to the stacker mechanism (D), and (F) is the folding mechanism ( A work supporting mechanism disposed below A), (G) a guide mechanism, and (H) a stopper mechanism.

The folding mechanism (A) is arranged on a main frame (21) standing upright on the left rear side of the base (20) of the manufacturing apparatus, and holds a folding base of the material (S) ( twenty two),
Core bar (23) arranged on the holding member (22), the core bar (23)
The main structure is a bending arm (24) for pressing the material (S) against.

The holding member (22) is horizontally arranged in a suspended state on the main frame (21) as shown in FIGS. 3 to 5, and has a through-hole (a diameter larger than that of the material (S). 25).

As shown in FIG. 5, the cored bar (23) has a tip opening side (see FIGS. 4 and 5) of the through hole (25) of the holding member (22).
It is fixed to the left side in the figure) and the through hole (2
Straight through hole (26) continuous with (5) and this through hole (2
6) A bent R portion (27) having a semicircular contour continuously formed from the inner wall in the middle to the outer surface of the core metal (23).

As shown in FIGS. 1 and 2, the bending arm (24) is connected to a hydraulic swing motor (M ₁ ) arranged above the main frame (21) via a pivot (28). And
A folding roller (29) is provided on the base end side of the folding arm (24).
However, a work pressing plate (30) is arranged on the tip side.

The pivot (28) which is the central axis of rotation of the swing arm (24).
Has its lower end positioned directly above the cored bar (23), and
An arbitrary point on a straight line whose axis extending in the vertical direction passes through the center of the R portion (27) and extends in the longitudinal direction of the holding member (22) (in this embodiment, the through hole (26) of the core metal (23) R part (27)
It is installed so that it will pass through the border. Therefore, the bending arm (24) is configured to horizontally rotate right above the cored bar (23) about the pivot axis (28). Further, the hydraulic swing motor (M ₁ ) has a bending arm (24).
A rotary encoder (R ₁ ) is connected to control the rotation angle of the hydraulic swing motor (M ₁ ) by the signal of the rotary encoder (R ₁ ). It

The folding roller (29) is horizontally rotatably supported on the lower surface of the proximal end of the folding arm (24) in a horizontal direction. V formed on
The character-shaped groove (not shown) is set so as to be at the same height as the through hole (25) of the holding member (22) and the through hole (26) of the cored bar (23), and is for bending. The position of the roller (29) from the pivot axis (28) is such that the bending roller (29) moves from the R portion (27) of the core metal (23) during the rotating operation of the bending arm (24). It is set to be separated by at least the diameter of the material (S).

The work pressing plate (30) is a flat plate-shaped member having a substantially V-shaped cross section, and has two shafts (34) slidably provided at the distal end and the center of the bending arm (24). It is erected and fixed between the lower side surfaces of the.

The supply mechanism (B) continuously supplies a material (S) such as a PC steel material which is a raw material of a spiral product in the horizontal direction toward the folding mechanism (A). (B) is a total of four rollers (35) for sandwiching the material (S) from two positions in the horizontal direction, and this roller (3).
5) Hydraulic motor (M ₂ ) that drives the reduction gear (36)
And the material (S) is moved by rotationally driving the roller (35).

The material (S) is provided on the supply side (the left side in FIGS. 1 and 2) of the work (W) in the supply mechanism (B).
Is provided with a length measuring mechanism (I) for detecting the supply amount of (1) and stopping the supply device (B) appropriately. The length-measuring mechanism (I) is disposed on the material (S) supply path, and has a pair of driven rollers (37) (38) for pinching the material (S) (W) from above and below, and an upper side roller. The rotary encoder (R ₂ ) detects the rotation amount of the driven roller (37) having a small diameter, and the supply length of the material (S) is detected as the rotation amount of the driven roller (37).

The supply path of the material (S) after the measuring mechanism (I) passes through a guide pipe (39) arranged horizontally between the bending mechanism (A) and the guide pipe (39). )
Is a through hole (2) of the holding member (22) of the bending mechanism (A).
It is located on the same axis as 5) and is continuous with the through hole (25).

The cutting mechanism (C) is for separating this product from the material (S) after the spiral product having a predetermined number of turns is manufactured, and is formed integrally with the folding mechanism (A). That is, as shown in FIGS. 3 to 5, the cutting mechanism (C) is used.
Is a plate blade (40) held and arranged at the rear end side (right side in FIGS. 4 and 5) opening of the through hole (25) of the holding member (22), and the holding member (22). A cylindrical fixed blade (41) arranged between the guide pipe (39) and the holding member (2).
2) is composed of a hydraulic cylinder (42) for moving the horizontal direction 2 and a direction perpendicular to the guide pipe (39). The plate blade (40) has a semicircular groove (40) having a diameter substantially the same as that of the through hole (25) of the holding member (22).
a) is formed, and the plate blade (40) is arranged so as to be in sliding contact with or close to the end surface of the fixed blade (41). Therefore, the cutting mechanism (C) is a restraining cutting mechanism composed of the plate blade (40) and the fixed blade (41), and the material (S) is a semicircular shape of the plate blade (40). Groove (40a)
And the inner peripheral edge of the fixed blade (41) receive a shearing force and are cut.

The stacker mechanism (D) supports the upper part of the spiral work (intermediate product) (W) that is folded and manufactured by the folding mechanism (A) so that it is always at a constant height position. The table (43) is arranged horizontally below the folding mechanism (A) and the lifting mechanism (44).

The table (43) is supported on the base (20) so as to be vertically movable by an X-shaped link (45) in which a pair of levers are pivotally connected to each other at a central portion. The sliding end of the link (45) on the base (20) side is
Opposing objects are connected by a shaft (47) extending in the width direction of the base (20).

Said elevating mechanism (44) includes a base (20) the hydraulic motor (M ₃₎ which is arranged on the right rear side of, are disposed in the longitudinal direction of the base (20), by the hydraulic motor (M _3), Reducer (4
8), a lead screw (50) rotatably driven via a chain transmission mechanism (49), and a nut (51) fixed to the central portion of each shaft (47) and screwed with the lead screw (50). And the lead screw (5
The nut (51) is moved by the rotation of (0) to move the sliding ends of the links (45), and the links (45) are moved.
The table (43) is moved up and down by changing the crossing angle of each lever.

Further, the stacker mechanism (D) is provided with a mechanism (52) for detecting the amount of elevation of the table (43). The detection mechanism (52) uses a lead screw and a nut, and a rotary encoder, and monitors the amount of lowering of the table (43) corresponding to the increase in the height of the work (W).

The transfer mechanism (E) is for moving the work (W) on the table (43) in synchronism with the supply speed of the material to prevent the work (W) from deforming or being entangled.
A dolly (53) housed in the table (43) and movable by a predetermined stroke in the longitudinal direction, and two slit grooves provided upright on the dolly (53) and bored in parallel with each other in the table (43). A push plate (56) erected and fixed to a bracket (55) projecting from (54) and arranged along the longitudinal direction of the table (43) to connect the belt (57) to the carriage (53). , A belt transmission mechanism (59) to which a driving force is transmitted from a hydraulic motor (M ₄ ) arranged on the lower surface of the table (43) through another transmission mechanism (58), and the push plate (56) Is a bogie (5
The table (43) is appropriately moved in the left-right direction by the movement of 3).

When the material (S) is bent, the support mechanism (F)
It holds the inner corners of the work (W) connected to the lower part of the material (S) to prevent the work (W) from being deformed by centrifugal force, and the center of the R part (27) of the core metal (23). A support rod (61) vertically movably provided via a base block (60) and a link (6) above the support rod (61) are provided vertically below the point.
2) The air cylinder (63) that moves up and down via the support bar (61) and the base block (60) move horizontally from the center of the R part (27) of the core metal (23) toward the front. It is composed of an air cylinder (64) for operating the air cylinder.
The support rod (61) is provided with a table (4) through a notch or a through hole (not shown) formed in the table (43).
It is designed to project to the upper surface of 3).

The guide mechanism (G) is arranged on the inner side of the core bar (23) of the folding mechanism (A) so as not to interfere with the rotating operation of the folding arm (24), and is made of the material (S). Curved guide plate (65) close to the supply path of the, and this guide plate (65)
And an air cylinder (66) that retracts the
When the material (S) and the work (W) are transferred by the transfer mechanism (E), the guide plate (65) prevents obstacles such as winding of the work (W) into the bending mechanism (A). It is a thing. The guide plate (65) is also made to project to the upper surface of the table (43) from a notch or a through hole (not shown) formed in the table (43) like the support rod (61). ing.

The stopper mechanism (H) stops the work (W) at a predetermined position when the material is bent, and
0) It is erected on the rear part of the rear part and is attached to the frame (67) connected to the main frame (21).

The stopper mechanism (H) has two guide rods (68) parallel to each other arranged in the frame (67) slidably in the vertical direction, and horizontally arranged between the lower ends of the guide rods (68). The sub-frame (69) is erected and fixed, and the stopper plate (71) vertically arranged at the tip of the arm (70) horizontally fixed to the left of the front surface of the sub-frame (69) is swingably supported, A shock absorber (72) is arranged between the right front side of the sub-frame (69) and the stopper plate (71),
Further, the air cylinder (7) for raising the sub-frame (69) along the guide rod (68) is attached to the frame (67).
3) is arranged, and the stopper plate (71) is arranged at a position along the supply path of the material or further in parallel with it. The air cylinder (73) functions only when the subframe (69) is raised, and is otherwise free so that the subframe (69) can descend by its own weight. .

The manufacturing procedure of the spiral product by the manufacturing apparatus having the above configuration will be described below. In the initial state, the folding arm (24) of the folding mechanism (A) is in the standby state in which the folding roller (29) is brought close to the material (S) conveyance path, and the work pressing plate The lower end of (30) is brought into contact with the table (43) of the stacker mechanism (D) by its own weight, the table (43) of the stacker mechanism (D) is at the highest position, and the transfer mechanism (E) is pushed. The plate (56) is retracted to the right side in FIG. 1, and the support rod (61) of the support mechanism (F) has risen to just below the core bar (23) of the bending mechanism (A). Guide plate (65)
Is raised to the position where the material (S) is conveyed, and the lower end of the stopper plate (71) of the stopper mechanism (H) is substantially in contact with the table (43) of the stacker mechanism (D). I shall.

First, as shown in FIG. 6, the material (S) was supplied by the supply mechanism (B) and transferred by the length measuring mechanism (I) by a predetermined length capable of forming the hook portion at the tip of the work (W). When is detected, the supply mechanism (B) is temporarily stopped.

Next, as shown in FIG. 7, the swinging motor (M ₁ ) rotates the bending arm (24) at a predetermined angle to press the material (S) by the bending roller (29), Core metal (2
Along the R part (27) of 3), the hook forming angle, for example, 135
Turn to ゜.

In the bending process, the material (S) is R of the core metal (23).
Tangentially projecting from the portion (27) and pressed at a position away from the R portion (27) by at least the diameter of the material (S) by the folding roller (29) in the direction along the R portion (27),
It is bent by the lever principle.

Next, as shown in FIG. 8, the swinging motor (M ₁ ) is rotated in the reverse direction and the folding arm (24) is returned to its original position, and then the material (S) is supplied to the work by the supply mechanism (B). (W) is supplied by a length capable of forming one side, and as shown in FIG. 9, the bending arm (24) is rotated, and the material (S) is fed to the folding roller ( The spiral product (P) is pushed along the R portion (27) of the core metal (23) by pressing the 29).
Bend it at an angle (90 ° because it is a rectangular spiral product in this case) and return the folding arm (24) to its original position.

Next, as shown in FIGS. 10 to 13, the material (S) is supplied in a predetermined length as described above, the bending arm (24) is rotated, and the bending roller (29) is used to rotate the bending arm (24). The material (S) is bent along the R portion (27) of the core metal (23).

Next, as shown in FIG. 14, the support rod (6) of the support mechanism (F) is
1) is moved horizontally by the air cylinder (64) so as not to interfere with the hook part of the work (W). Then, the material (S) is supplied by the supply mechanism (B) to a predetermined length, and the work (W) is supplied to the material (S).
Plate of the transfer mechanism (E) (56) in synchronization with the feeding operation of
Then, the material (S) is pressed and transferred in the left direction in the figure, that is, in the supply direction of the material (S). At this time, the work (W) and the cores (23) to (S) are position-controlled by the guide plate (65) of the guide mechanism (G) provided in the vicinity of the core (23). The material (S) is reliably transferred along the supply direction without colliding with the side edge of the work pressing plate (30) of (A) or the hook portion of the work (W) being entangled.

When the material supply and the work (W) conveyance are completed, the air cylinder (64) is operated to return the support rod (61) to its original position, and the hydraulic motor (M ₄ ) is operated to push the push plate. Move (56) back to its original position.

Next, as shown in FIG. 15, the bending arm (24) is rotated and the material (S) is bent 90 ° in the above-mentioned manner to form a work (W) for one turn.

Here, when the material (S) is bent by rotating the bending arm (24), the work (W) manufactured up to the previous step
Centrifugal force acts on the work to cause it to lose its shape. However, since the support rod (61) of the support mechanism (F) is located at the inner corner of the work (W), the work (W) is not supported. The material (S) is rotated in the bending direction around the rod (61) as a fulcrum to prevent the material (S) from jumping out. Further, at the end of the material bending, even if the rotation of the bending arm (24) is stopped, the work (W) located below the bending portion tries to rotate further due to inertia. (W) collides with the stopper plate (71) of the stopper mechanism (H), and this shock is absorbed by the shock absorber (72), whereby it is forcibly stopped at a predetermined position.

The one-turn work (W) hangs downward from the core metal (23) by its own weight and is positioned on the table (43) of the stacker mechanism (D). Every time the workpiece (W) increases by one turn, the diameter of the material (S) is lowered by the drive of the hydraulic motor (M ₃ ). Furthermore, as the table (43) descends,
The work pressing plate (30) of the folding mechanism (A) and the stopper plate (71) of the stopper mechanism (H) descend by the same amount by their own weight following the descending of the table (43).

Below, it will be the bending work of the second turn of the work (W).

First, as shown in FIG. 16, while the bending arm (24) is returned to the original position, the material (S) is supplied for a predetermined length, and in synchronization with this, the push plate (56) is used to move the material (S). 1
Move the work (W) for the turn. At this time, similarly to the above, the material (S) and the work (W) for one turn are positionally regulated by the guide plate (65) and are reliably transferred along the supply direction of the work (W), and the guide plate (65). ) Functions similarly in the following.

Next, as shown in FIG. 17, when bending the material (S),
The work (W) located below the material (S) in the bending process is pressed on one side by the work pressing plate (30) that rotates together with the bending arm (24), and the work (W) is folded. It rotates without losing its shape in synchronization with the music side. The work (W) is rotated by the bending arm (24) while being supported by the support rods (61) at the inner corners thereof as described above, and is rotated by a predetermined angle, that is, 90 °. The stopper plate (71) reliably stops at a predetermined position.

Next, as shown in FIGS. 18 to 21, the material (S) is further bent at two places as described above, and then the material (S) is supplied as shown in FIG. ) Push plate (5
At the time of transfer by 6), the air cylinder (64) is operated so that the support rod (61) does not interfere with the hook portion at the tip of the work (W) in the horizontal direction as in the case of FIG. Move it. Then, after the supply of the material (S) by the supply mechanism (B) and the movement of the work (W) by the transfer mechanism (E) are completed, the support rod (61) is returned to the original position, and the above procedure is performed. By bending the material (S) at, a work (W) for two turns is formed.

After that, the work (W) having a predetermined number of turns is bent and formed by repeating the above operation. Here, the table (43) of the stacker mechanism (D) is lowered by the diameter of the material (S) as the number of turns of the work (W) increases, whereby the work (W) becomes denser. It is bent and formed.

When the work (W) reaches the desired number of turns,
As shown in FIG. 23, with the stopper plate (71) retracted upward by the air cylinder (73), the bending arm (24) is rotated by a predetermined angle, and the above material is bent at the hook portion forming angle described above. Bend to form the end hook.

Next, as shown in FIG. 24, the support rod (61) is retracted into the base block (60) by the operation of the air cylinder (63), and then the cutting is integrally attached to the bending mechanism (A). The hydraulic cylinder (42) of the mechanism (C) is operated to move the holding member (22) and the cored bar (23) horizontally with respect to the fixed blade (41). Then, the material (S) is added to the holding member (22).
Is cut by receiving a shearing force between the semicircular groove (40a) of the plate blade (40) and the inner circumference of the fixed blade (41) attached to the workpiece (W) as a spiral product (P). Will be completed.

By the way, when the spiral product (P) is used as a hoop that is wound around an axial reinforcing bar, a hook portion that functions as a locking portion with the axial reinforcing bar has a small diameter in the axial reinforcing bar. Therefore, the hook may be extremely short, and is extremely convenient for cutting by the cutting mechanism (C) because the hook portion has a short length corresponding to the through hole (25) of the holding member (22).

Further, since the cutting mechanism (C) in the device of the present invention is constructed integrally with the bending mechanism (A) as described above, after the work (W) is moved in the opposite direction to the supply direction as in the conventional device. Since there is no need to cut and it can be cut immediately after bending, there is little loss time and workability and productivity are high.

With the above operation, a spiral product (P) having hooks formed at both ends as shown in FIG. 25 and having a predetermined number of turns is obtained. After taking out the spiral product (P) from the table (43), the above operation is performed. The spiral products (P) may be sequentially manufactured by repeating the above.

According to the device of the present invention, in addition to the spiral product (P) as described above, spiral products (P) with different hook portion forming positions as shown in FIG. 26 are shown in FIGS. 27 to 29. One-turn spiral product (P), Figs. 30 to 30
Products with less than one turn having hooks on both ends as shown in Fig. 33 can be easily manufactured.
When manufacturing a product with one turn or less as shown in FIG. 33, it is not necessary to operate the stacker mechanism (D), the transfer mechanism (E), the support mechanism (F), and the stopper mechanism (H).

EFFECTS OF THE INVENTION The present invention is cut off when the material is cut, because the material of the bent spiral work can be cut while the terminal of the spiral work is restrained and held in the through hole of the core metal and the through hole of the holding member. It is possible to prevent the work from scattering due to the shear reaction force, and it is possible to prevent deformation and distortion.

Then, the material can be cut at a position relatively close to the bent R portion of the core metal, and the amount of material used can be reduced.

[Brief description of drawings]

1 to 33 show an embodiment of the manufacturing apparatus for spiral products according to the present invention. FIG. 1 is a front view of the above apparatus, FIG. 2 is a plan view of FIG. 1, and FIG. FIG. 4 is an enlarged side view of the vicinity of a core bar of a bending mechanism in the above device, FIG. 4 is a plan view of FIG. 3, FIG. 5 is a cross-sectional view of a main part of FIG. 4, and FIGS. The drawings are schematic views for explaining the operation procedure of the manufacturing apparatus, and FIGS. 25 to 33 are schematic views showing examples of products that can be manufactured by the apparatus of the present invention. 34 to 36 show an example of a conventional manufacturing apparatus for spiral products, FIG. 34 is a front view, FIG. 35 is a side view,
FIG. 36 is a plan view. (A) …… Bending mechanism, (C) …… Cutting mechanism, (S) …… Material, (W) …… Workpiece (intermediate product), (P) …… Spiral product (finished product), (22) …… Holding member, (23) …… core metal, (40) …… plate blade (movable blade), (40a) …… semi-circular groove, (41) …… fixed blade, (42) …… hydraulic cylinder.

Front page continuation (72) Inventor Manabu Hagino 16-4, Sakonyama, Asahi-ku, Yokohama, Kanagawa Prefecture 1-20-406, Sakonyama (56) References JP-A-53-30461 (JP, A) JP-A-58-176037 (JP, A)

Claims (1)

[Claims] 1. A spiral product having a desired number of turns is produced by repeatedly bending a long continuous rod-shaped or linear material, which is intermittently supplied as appropriate, by a bending mechanism at predetermined intervals in the horizontal direction. In the manufacturing apparatus described above, a core bar having a bent portion R of the material at the front end and a through hole for introducing the material toward the bent R portion at the rear end, and the core metal holding the core metal, A holding member having a through hole communicating with the through hole on the rear end side of the core metal, and a cylinder having a through hole of a material arranged adjacent to the rear end of the holding member and communicating with the through hole of the holding member. -Shaped fixed blade, and a plate blade installed at the rear end of the through hole of the holding member in order to shear the material by sliding contact with the tip of the fixed blade, the plate blade and the core metal by the holding member. A spiral product characterized by being moved integrally to shear the material Manufacturing equipment.