JP2012240106A - Bending machine and method of manufacturing elongated body molding product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a configuration capable of preventing an elongated body from being damaged and solving a bite of the elongated body in a bending machine that bends the elongated body.SOLUTION: A bending mechanism portion includes a bending die 28 and a press member 29. The bending die 28 has a curved surface 30. The press member 29 is driven in a direction pressing a pipe to a curved surface 30 during bending work. The bending die 28 is in a static state with respect to the pipe during the bending work. Furthermore, the bending die 28 is divided into two in a direction perpendicular to a bent surface. An air cylinder relatively displaces each contact member (an upper die 35 and a lower die 36) in which the bending die 28 is divided in the direction perpendicular to the bent surface.

Description

  The present invention mainly relates to a configuration of a bending machine for bending a long body such as a metal pipe into a predetermined shape.

  Conventionally, various types of bending machines have been proposed. For example, Patent Literature 1 describes a bending machine that sequentially bends a rod-like or pipe-like workpiece extending in a straight line from the tip. In Patent Document 1, a workpiece is bent by rotating a tool holding plate and pressing a forming tool against the workpiece. However, although the configuration of Patent Document 1 can bend a workpiece at a right angle, it is not assumed to bend along a smooth curve.

  On the other hand, a bending machine 90 configured as shown in FIG. 7A is also known. The bending machine 90 includes a bending mechanism unit 94 having a bending die 92 having a curved surface 91 curved in an arc shape, and a pressing member 93 that presses the long body 80 against the curved surface 91. Yes. With this configuration, the long body 80 is sandwiched between the bending die 92 and the pressing member 93 and the pressing member 93 is moved along the curved surface 91 as shown in FIG. Is pressed against the curved surface 91. Accordingly, the long body 80 is smoothly bent in an arc shape along the curved surface 91.

  Moreover, this kind of bending apparatus is comprised so that a bending process can be given to several places of an elongate body. For example, Patent Document 1 discloses a configuration in which a linear motion base supporting a forming tool or the like is movable. According to this, since a forming tool etc. can be moved relatively with respect to a workpiece | work, a bending process can be given to several places of a workpiece | work. Moreover, the structure of patent document 1 is a structure which clamps a workpiece | work with a clamping member. The clamping member is attached to the linear motion base and is configured to move integrally with a forming tool or the like.

  By the way, in the structure of patent document 1, if a workpiece | work is clamped with a clamping member, a straight road base cannot be moved. Further, if the workpiece and the clamping member are in contact with each other, the workpiece may be damaged by the clamping member when the linear motion base is moved. In this regard, Patent Document 1 describes that when the linear motion base is moved, the gap between the clamping members is opened and the clamping of the workpiece by the clamping member is released. Thus, since the workpiece and the clamping member are not brought into contact with each other by opening the clamping members, it is considered that the workpiece can be prevented from being damaged by the clamping member when the linear motion base is moved.

JP 2009-6355 A

  The bending machine configured as shown in FIG. 7 is also configured to be able to perform bending at a plurality of locations on the long body 80. Specifically, the holding unit 95 holding the long body 80 is configured to be driven in a direction in which the holding unit 95 approaches or separates from the bending mechanism unit 94. Thereby, since the bending mechanism part 94 can be relatively moved with respect to the long body 80, a bending process can be given to the arbitrary places of the long body 80. FIG.

  By the way, if the holding part 95 is moved while the long body 80 is sandwiched between the bending mold 92 and the pressing member 93, the long body 80 contacts the bending mold 92 and the pressing member 93. In addition, the long body 80 may be damaged.

  Therefore, when moving the holding part 95, the structure which spaces apart the bending die 92 and the pressing member 93, and cancels | pinches the elongate body 80 is considered. However, as described above, the pressing member 93 is configured to be driven along the curved surface 91 of the bending die 92. Therefore, when the pressing member 93 is configured to move in another direction (a direction away from the bending die 92), the mechanism for driving the pressing member 93 is increased in size and complexity, resulting in higher costs. It will be obvious.

  Apart from this, there is a problem that when the long body 80 is bent by the bending mechanism portion 94, the long body 80 may bite into the bending mold 92. If the long body 80 bites into the bending mold 92 in this way, it becomes difficult to remove the long body 80 from the bending mold 92.

  The present invention has been made in view of the above circumstances, and its main purpose is to prevent the long body from being damaged and to eat the long body in a bending machine for bending the long body. It is in providing the structure which can eliminate sticking.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the viewpoint of this invention, the bending machine of the following structures is provided. That is, this bending machine includes a bending mechanism section that bends the long body within a predetermined plane, and a drive section. The bending mechanism section includes a plurality of contact members that come into contact with the elongated body. The drive unit relatively moves at least any two of the contact members in a direction substantially orthogonal to the predetermined plane.

  By separating the contact members in this manner, the contact members can be prevented from unnecessarily contacting the long body, and thus the long body can be prevented from being damaged.

  The bending machine is preferably configured as follows. That is, the bending mechanism part includes a bending die and a pressing member. The bending mold has a curved surface. The pressing member is driven in a direction of pressing the elongated body against the curved surface during bending. At least one of the bending mold and the pressing member is divided into a plurality of contact members in a direction substantially orthogonal to the predetermined plane.

  Thus, the long body can be bent with high precision by bending the long body against the curved surface.

  The bending machine is preferably configured as follows. That is, the bending die is stationary with respect to the long body during bending. The bending mold is divided into a plurality of contact members in a direction substantially orthogonal to the predetermined plane. And the said drive part moves relatively each contact member into which the said bending metal mold | die was divided | segmented in the direction substantially orthogonal to the said predetermined plane.

  In this way, by biting the bending die into a plurality of contact members and driving the contact members so as to be separated from each other, it is possible to eliminate the biting of the long body with respect to the bending die. Further, since the pressing member is driven to bend the long body, the structure of the apparatus becomes complicated if the pressing member is divided. In this regard, if the stationary bending mold is divided as described above, it can be realized with a relatively simple structure.

  The bending machine is preferably configured as follows. That is, this bending machine is configured to be able to relatively move the bending mechanism portion and the long body in the longitudinal direction of the unprocessed portion of the long body. The drive unit is configured to keep the contact members apart when the bending mechanism and the elongated body move relative to each other, and when the bending mechanism bends the elongated body, Keep the members close together.

  As described above, when the long body is moved, the contact member is separated, thereby preventing the contact member from unnecessarily contacting the long body and preventing the long body from being damaged. .

  According to another viewpoint of this invention, the long body molded article manufacturing method which manufactures a long body molded article by bending a long body using said bending machine is provided.

  That is, by bending a long body using the above bending machine, it is possible to prevent the long body from being damaged, and thus a high-quality molded product can be manufactured.

  In the above-mentioned long body molded product manufacturing method, it is preferable to perform the bending process after cutting the long body into a necessary length in advance.

  Thereby, since the extra length of a long body is not required, operations, such as measuring and cutting a long body after a bending process, become unnecessary.

  In the above-mentioned long body molded product manufacturing method, the long body is preferably made of aluminum.

  That is, since an aluminum long body is easily scratched, it is particularly preferable to perform bending by the long body molded product manufacturing method of the present invention having an effect of preventing the scratch.

  In the above-described long body molded product manufacturing method, it is preferable that the long body is formed of a cylindrical member, and the bending is performed after the second long body is inserted therein.

  That is, if the long body is bent, it becomes difficult to insert the second long body into the long body. On the other hand, as described above, the second long body can be easily inserted into the long body before bending the long body.

  In the above-described long body molded product manufacturing method, the second long body is preferably an electric wire.

  With the elongated body bent in this way, the electric wire can be routed through a predetermined path while protecting the electric wire inside.

The top view of the pipe vendor which concerns on one Embodiment of this invention. The top view which shows a mode that the pipe is bent by the pipe vendor. The perspective view of a bending die and a pressing member. (A) Sectional drawing of a bending die and a pressing member. (B) Sectional drawing which shows a mode that the pipe was inserted | pinched between the bending die and the pressing member. (C) Sectional drawing which shows a mode that the upper side metal mold | die and the lower side metal mold | die were spaced apart. Sectional drawing explaining the biting of a pipe. Sectional drawing of the bending metal mold | die and pressing member which concern on a modification. The top view explaining the conventional pipe vendor.

  Next, embodiments of the present invention will be described with reference to the drawings.

  A pipe bender (bending machine) 10 according to this embodiment is an apparatus for bending a pipe (long body, workpiece) 20 to form a predetermined shape. As shown in FIG. 1, the pipe bender 10 includes a holding part 21, a bending mechanism part 22, and a support base 23 as main components. The pipe 20 to be processed in the pipe vendor 10 is a cylindrical elongated member made of aluminum, and an unillustrated electric wire (second long body) is inserted therein.

  The holding unit 21 is configured to hold the pipe 20. The holding unit 21 includes a moving plate 25, a pipe rotating mechanism 26, and a pipe fixing member 27.

  The pipe fixing member 27 is configured to fix the pipe 20 in a substantially horizontal state. The pipe rotation mechanism 26 is configured to be able to rotate the pipe fixing member 27 about the axis of the pipe 20 as a central axis. Thereby, the pipe 20 fixed to the pipe fixing member 27 can be rotated around the axis. The pipe rotation mechanism 26 is fixed on the horizontal moving plate 25.

  On the other hand, two guide rails 24 and 24 are arranged in parallel on the upper surface of the support base 23. Above the guide rail 24, the moving plate 25 is installed via a linear guide (not shown). Further, the pipe bender 10 of the present embodiment includes a screw feed mechanism (not shown) that can move the moving plate 25 along the longitudinal direction of the guide rail 24.

  The guide rails 24, 24 are arranged in parallel to the longitudinal direction of the unprocessed portion of the pipe 20 (that is, the portion closer to the holding portion 21 than the bending mechanism portion 22). With the above configuration, the entire holding portion 21 can be moved along the longitudinal direction of the unprocessed portion of the pipe 20 by moving the moving plate 25 by the screw feeding mechanism. Thereby, the pipe 20 held by the holding portion 21 can be moved in the longitudinal direction of the unprocessed portion of the pipe 20.

  Next, the bending mechanism part 22 for bending the pipe 20 will be described. The bending mechanism unit 22 includes a bending die 28 and a pressing member 29 as main components.

  As shown in FIG. 2, the bending mechanism unit 22 can bend the pipe 20 in a predetermined plane (in a plane parallel to the paper surface in FIGS. 1 and 2; in the present embodiment, in a horizontal plane). It is configured. In the following description, the predetermined plane is referred to as a bending plane.

  As shown in FIGS. 1 and 2, the bending die 28 has a curved surface 30 in which a cross-sectional contour shape in a cross section parallel to the bending plane is formed in an arc shape. On the other hand, the pressing member 29 is disposed so as to face the curved surface 30.

  The pressing member 29 is fixed to the tip of the rotating arm 31. The rotating arm is configured to be rotatable about the base end side. Further, the bending mechanism section 22 includes a bending drive source (not shown) for driving the rotation arm 31 to rotate. The bending drive source is composed of, for example, an electric motor, and is configured to be able to arbitrarily control the rotation angle of the rotation arm 31. And it is comprised so that the pressing member 29 can be moved along the curved surface 30 by rotationally driving the rotation arm 31. In the following description, the state in which the longitudinal direction of the rotating arm 31 is orthogonal to the longitudinal direction of the unprocessed portion of the pipe 20 (the state shown in FIG. 1) when viewed from the direction orthogonal to the bending plane is pressed. This is referred to as the reference position of the member 29.

  When the pressing member 29 is at the reference position, the curved surface 30 of the bending die 28 and the pressing member 29 are arranged with the axis of the unprocessed portion of the pipe 20 interposed therebetween. Therefore, in a state where the pressing member 29 is at the reference position (the state shown in FIG. 1), the unprocessed portion of the pipe 20 can be sandwiched between the bending die 28 and the pressing member 29.

  As shown in FIGS. 3 and 4, the curved surface 30 of the bending die 28 is a groove 32 that matches the outer peripheral shape of the pipe 20. Specifically, the groove portion 32 has a substantially semicircular concave shape in a cross-sectional contour shape (see FIG. 4) in a cross section orthogonal to the longitudinal direction of the pipe 20. Further, the pressing member 29 is formed with a groove portion 33 that matches the outer peripheral shape of the pipe 20. Specifically, the groove 33 has a substantially semicircular concave shape in cross-sectional contour shape (see FIG. 4) in a cross section orthogonal to the longitudinal direction of the pipe 20. As shown in FIG. 4A, the curved surface 30 of the bending mold 28 and the pressing member 29 face each other, whereby a space having a substantially circular cross section is formed by the bending mold 28 and the pressing member 29. . Then, as shown in FIG. 4B, the pipe 20 sandwiched between the bending die 28 and the pressing member 29 is disposed in the space having the substantially circular cross section.

  Then, with the pipe 20 sandwiched between the bending die 28 and the pressing member 29, the rotating arm 31 is rotated in one direction (clockwise in FIG. 1 in the case of this embodiment). As shown in FIG. 2, the pipe 20 can be pressed against the curved surface 30. With the above configuration, the pipe 20 can be bent along the curved surface 30. At this time, the pipe 20 to be bent is deformed so that the metal on the inner side in the bending direction is compressed and the outer metal is stretched. However, since the pipe 20 is deformed inside the space having a substantially circular cross section formed in accordance with the outer peripheral shape thereof (the space between the groove 32 and the groove 33), the pipe 20 can be used as a pipe without being excessively deformed. It can be bent while maintaining its shape. Thereby, the electric wire inside the pipe 20 is not compressed.

  Next, a characteristic configuration of the pipe vendor 10 of the present embodiment will be described in detail.

  As shown in FIGS. 3 and 4, in this embodiment, the bending mold 28 is divided into two parts in a direction (vertical direction in FIG. 4) perpendicular to the bending plane. In other words, the bending die 28 is divided into two parts with a dividing surface 34 parallel to the bending plane as a boundary. The dividing surface 34 is set so as to pass through the center of the groove portion 32 having a semicircular cross section. Here, the bending mold 28 divided into two is referred to as an upper mold 35 and a lower mold 36, respectively. Since the upper mold 35 and the lower mold 36 are in contact with the pipe 20 when the pipe 20 is bent, it can be said that they are contact members.

  The pipe bender 10 of this embodiment includes an air cylinder 38 that can relatively move the upper mold 35 and the lower mold 36 in a direction (vertical direction in FIG. 4) perpendicular to the bending plane. By this air cylinder 38, the upper mold 35 and the lower mold 36 can be moved closer to or away from each other. By separating the upper mold 35 and the lower mold 36, the pipe 20 sandwiched between the bending mold 28 and the pressing member 29 can be opened as shown in FIG. 4C. .

  In the bending machine described in Patent Document 1, the two clamping members are configured to release the workpiece by being separated in the direction in which the workpiece is clamped by the clamping member. On the other hand, in the bending machine 10 of the above embodiment, the upper mold 35 and the lower mold 36 are orthogonal to the direction in which the pipe 20 is sandwiched between the bending mold 28 and the pressing member 29 (the left-right direction in FIG. 4). It is the structure which leaves | separates in a direction. As described above, the upper mold 35 and the lower mold 36 of the present embodiment and the clamping member of Patent Document 1 are completely different in the direction of separation.

  Next, a method (long body molded product manufacturing method) of bending a pipe 20 using the pipe vendor 10 and manufacturing a pipe molded product (long body molded product) will be described.

  First, the worker prepares an aluminum pipe cut to the finished length. Although it is conceivable to prepare a pipe having a margin in length, the pipe bender 10 of the present embodiment is configured to bend the pipe along the bending mold 28, so that accurate bending work can be performed. Is possible. Therefore, it is not necessary to leave a margin for the pipe length. By preparing the pipe 20 in accordance with the finished length in this way, it is possible to omit the work of cutting the extra length portion after the bending process is completed.

  Next, the operator inserts an electric wire into the prepared pipe 20. That is, once the pipe 20 is bent, it is difficult to insert the electric wire into the pipe 20, so that the electric wire is inserted before bending.

  Subsequently, the worker fixes the vicinity of one end of the pipe 20 to the pipe fixing member 27. At this time, the other end of the pipe 20 (the end opposite to the side fixed to the pipe fixing member 27) is fixed so as to face the bending mechanism 22 side.

  At this time, the air cylinder 38 is driven to separate the upper mold 35 and the lower mold 36 from each other. The pressing member 29 is set as a reference position.

  Next, the holding part 21 is moved toward the bending mechanism part 22 by the above-described screw feeding mechanism. As a result, the other end of the pipe 20 is inserted between the bending die 28 and the pressing member 29.

  A space having a substantially circular cross section formed by the groove 32 of the bending die 28 and the groove 33 of the pressing member 29 is formed in accordance with the outer peripheral shape of the pipe 20. Therefore, the gap between the bending die 28 and the pressing member 29 and the outer periphery of the pipe 20 is extremely small. For this reason, it is very difficult to insert the pipe 20 into the space having a substantially circular cross section.

  In addition, when the pipe 20 is inserted into a space having a small gap as described above, the bending mold 28 and the pressing member 29 may come into contact with the pipe 20 and the pipe 20 may be damaged. In particular, when the aluminum pipe 20 is processed as in the present embodiment, it is easily damaged.

  Therefore, as described above, the bending die 28 is divided into the upper die 35 and the lower die 36, and the two are separated from each other, whereby the pipe 20 is connected between the bending die 28 and the pressing member 29. It becomes easy to insert. Moreover, since it becomes difficult to damage the pipe 20 by this, the quality of a molded product can be improved.

  Subsequently, when the holding unit 21 reaches a predetermined position, the movement of the holding unit 21 by the screw feeding mechanism is stopped. Next, the air cylinder 38 is driven, and the upper mold 35 and the lower mold 36 that have been separated from each other are brought close to each other. Thereby, it will be in the state (state of FIG.4 (b)) where the bending metal mold | die 28 was closed.

  In this state, the turning arm 31 is turned to a predetermined angle. As a result, the pressing member 29 moves along the curved surface 30 of the bending die 28, so that the pipe 20 is pressed against the curved surface 30, and the pipe 20 is bent into an arc shape (FIG. 2). At this time, the pipe 20 can be bent to an arbitrary angle by controlling the rotation angle of the rotation arm 31.

  When the pipe 20 is bent to a predetermined angle, the pressing member 29 is returned to the reference position. Further, the air cylinder 38 is driven to separate the upper mold 35 and the lower mold 36 and open the pipe 20 (state shown in FIG. 4C). Thereby, the biting of the pipe 20 with respect to the bending die 28 can be eliminated.

  That is, when the aluminum pipe 20 is bent, the metal of the pipe 20 is compressed on the inner side in the bending direction, and deformation is generated so as to spread in a direction perpendicular to the bending plane (vertical direction in FIG. 5). For this reason, the pipe 20 which spreads up and down bites into the groove 32 of the bending die 28 (see FIG. 5), and it becomes difficult to remove the pipe 20 from the bending die 28.

  In this respect, as in this embodiment, the bending mold 28 is divided in a direction (vertical direction in FIG. 5) perpendicular to the bending plane and separated in this direction, so that the biting of the pipe 20 is eliminated and bending is performed. The pipe 20 can be easily removed from the mold 28.

  Subsequently, when a bend is formed in another portion of the pipe 20, the holding portion 21 is further moved by the screw feeding mechanism. Thereby, the bending mechanism part 22 can be moved relative to the pipe 20 in the longitudinal direction of the pipe 20. That is, since the location where the bending process is performed can be moved, the bending process can be performed at another location.

  In the conventional pipe bender, when the bending mechanism portion 22 is moved relative to the pipe 20, the bending die 28 and the pressing member 29 may come into contact with the pipe 20 and the pipe 20 may be damaged. In this respect, in the present embodiment, when the bending mechanism portion 22 is moved relative to the pipe 20, the upper mold 35 and the lower mold 36 are separated from each other, so that the bending mold 28 is separated from the pipe 20. And the pressing member 29 does not contact unnecessarily. Thereby, damage to a pipe can be prevented.

  As described above, the pipe bender 10 of the present embodiment divides the bending mold 28 into upper and lower parts so that the bending mold 28 does not unnecessarily contact the pipe 20, thereby causing damage to the pipe 20. It has been prevented. And according to this structure, the biting of the pipe 20 can be eliminated. In this way, the simple configuration of dividing the bending die 28 into upper and lower parts can simultaneously realize two effects of preventing damage to the pipe and eliminating biting.

  In addition, when forming a bend in another location of the pipe 20, the pipe fixing member 27 is rotated by the pipe rotation mechanism 26 as needed. Thereby, since the pipe 20 can be rotated around the axial center, the relative rotation phase of the bending mechanism part 22 with respect to the pipe 20 can be changed. That is, the direction in which the pipe 20 is bent can be arbitrarily changed. Thereby, a pipe molded product bent into an arbitrary three-dimensional shape can be formed.

  As described above, the pipe bender 10 of the present embodiment includes the bending mechanism portion 22 that bends the pipe 20 in the bending plane and the air cylinder 38. The bending mechanism unit 22 includes an upper mold 35 and a lower mold 36 that are in contact with the pipe 20. The air cylinder 38 relatively moves the upper mold 35 and the lower mold 36 in a direction perpendicular to the bending plane.

  By separating the upper mold 35 and the lower mold 36 in this manner, the bending mold 28 can be prevented from contacting the pipe 20 unnecessarily, and the pipe 20 can be prevented from being damaged.

  The pipe vendor 10 of this embodiment is configured as follows. That is, the bending mechanism unit 22 includes a bending die 28 and a pressing member 29. The bending mold 28 has a curved surface 30. The pressing member 29 is driven in a direction in which the pipe 20 is pressed against the curved surface 30 during bending. The bending die 28 is stationary with respect to the pipe at the time of bending. The bending die 28 is divided into two parts in a direction perpendicular to the bending plane. The air cylinder 38 relatively moves each contact member (the upper mold 35 and the lower mold 36) obtained by dividing the bending mold 28 in a direction orthogonal to the bending plane.

  Thus, the pipe 20 can be bent with high accuracy by pressing the pipe against the curved surface 30 and bending it. Then, the bending mold 28 is divided into upper and lower parts and driven so as to separate the upper mold 35 and the lower mold 36 from each other, so that the bite of the pipe 20 with respect to the bending mold 28 can be eliminated. Further, since the pressing member 29 is driven to bend the pipe 20, if the pressing member 29 is configured to be divided, the structure of the apparatus becomes complicated. In this regard, if the stationary bending die 28 is divided as described above, it can be realized with a relatively simple structure.

  Further, the pipe bender 10 of the present embodiment is configured such that the bending mechanism portion 22 and the pipe 20 are relatively movable in the longitudinal direction of the unprocessed portion of the pipe 20. The air cylinder 38 keeps the upper die 35 and the lower die 36 apart when the bending mechanism portion 22 and the pipe 20 move relative to each other, and when the bending mechanism portion 22 bends the pipe 20, The upper mold 35 and the lower mold 36 are kept close to each other.

  As described above, when the pipe 20 is moved, the upper mold 35 and the lower mold 36 are separated from each other, thereby preventing the bending mold 28 from contacting the pipe 20 unnecessarily. Can be prevented from being damaged.

  Moreover, the pipe molded product manufacturing method of this embodiment manufactures a pipe molded product by bending a pipe using the pipe vendor 10 described above.

  That is, by bending the pipe 20 using the pipe bender 10 of the present embodiment, the pipe 20 can be prevented from being damaged, so that a high-quality molded product can be manufactured.

  Moreover, in the pipe molded product manufacturing method of this embodiment, the pipe 20 is cut into a necessary length in advance and then bent.

  Thereby, since the extra length of the pipe 20 is not required, operations such as measuring and cutting the pipe 20 after the bending process become unnecessary.

  In the pipe molded product manufacturing method of the present embodiment, the pipe 20 is made of aluminum.

  That is, since the aluminum pipe is easily damaged, it is particularly preferable to perform the bending process by the pipe molded product manufacturing method of the present embodiment having an effect of preventing the damage.

  Moreover, in the pipe molded product manufacturing method of the present embodiment, the bending process is performed after an electric wire is inserted into the pipe 20.

  That is, if the pipe 20 is bent, it is difficult to insert the electric wire No. into the pipe 20. On the other hand, as described above, before bending the pipe 20, the electric wire can be easily inserted therein. With the pipe 20 thus bent, the electric wire can be routed through a predetermined path while protecting the electric wire.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  In the above embodiment, the upper mold 35 and the lower mold 36 are separated from each other. However, this is limited to the configuration in which both the upper mold 35 and the lower mold 36 are moved as shown in FIG. Alternatively, a configuration in which only the upper die 35 is moved as shown in FIG. 6A or a configuration in which only the lower die 36 is moved as shown in FIG.

  The drive unit is not limited to the air cylinder, and any appropriate configuration can be used as long as the drive unit can be driven in a direction in which the upper mold 35 and the lower mold 36 are separated.

  The number of divisions of the bending die 28 is not limited to two, and can be divided into three or more.

  In the above embodiment, the bending mold 28 is divided into upper and lower parts, but instead of this, or in addition to this, the pressing member 29 can be divided into upper and lower parts.

  A 2nd elongate body is not restricted to an electric wire, Another thing may be inserted in the pipe. Needless to say, the bending machine of the present invention can also be used for bending an empty pipe into which the second elongated body is not inserted. Further, the long body is not limited to a pipe but may be a rod-shaped member. Of course, the material of the long body is not limited to aluminum.

  In the embodiment described above, the pipe can be bent into an arbitrary three-dimensional shape, but it goes without saying that the configuration of the present invention may be applied to two-dimensional bending.

  In the above embodiment, the pipe cut according to the finished length is bent. However, the pipe may have an extra length, and the extra length portion may be cut after the bending process.

10 Pipe bender (bending machine)
20 Pipe (long body)
22 Bending mechanism 28 Bending die 29 Pressing member 35 Upper die (contact member)
36 Lower mold (contact member)
38 Air cylinder (drive unit)

Claims (9)

A bending mechanism for bending the long body within a predetermined plane;
A drive unit;
With
The bending mechanism section includes a plurality of contact members that contact the elongated body,
The drive unit moves at least two of the contact members relative to each other in a direction substantially orthogonal to the predetermined plane. The bending machine according to claim 1,
The bending mechanism unit includes a bending mold and a pressing member,
The bending mold has a curved surface,
The pressing member is driven in a direction of pressing the elongated body against the curved surface during bending.
At least one of the bending mold and the pressing member is divided into a plurality of contact members in a direction substantially orthogonal to the predetermined plane. The bending machine according to claim 2,
The bending mold is in a stationary state with respect to the elongated body during bending, and is divided into a plurality of contact members in a direction substantially orthogonal to the predetermined plane,
The drive unit is configured to move each contact member into which the bending mold is divided relatively in a direction substantially orthogonal to the predetermined plane. The bending machine according to any one of claims 1 to 3,
The bending mechanism and the long body are configured to be relatively movable in the longitudinal direction of the unprocessed portion of the long body,
The drive unit is
When the bending mechanism and the elongated body move relative to each other, the contact members are separated from each other,
When the bending mechanism section bends the long body, the contact members are kept close to each other.   A long body molded product, wherein the long body molded product is manufactured by bending the long body using the bending machine according to any one of claims 1 to 4. Production method. It is a long body molded article manufacturing method according to claim 5,
A method for producing a long product, which comprises performing the bending process after cutting the long product into a required length in advance. It is a long body molded article manufacturing method according to claim 5 or 6,
The method for producing a long product, wherein the long product is made of aluminum. A method for producing a long molded article according to any one of claims 5 to 7,
The long body is composed of a cylindrical member, and the second long body is inserted into the long body, and then the bending is performed. It is a long body molded article manufacturing method according to claim 8,
The method for producing a long molded article, wherein the second long body is an electric wire.

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