Bending positioning jig and bending device

Abstract

The embodiment of the utility model provides a bending positioning jig and a bending device, the bending positioning jig comprises a mounting structure and a positioning assembly, the mounting structure is provided with a supporting surface, the supporting surface is used for bearing a round bar, the positioning assembly is connected with the mounting structure in a sliding mode, the positioning assembly can slide relative to the mounting structure, and the positioning assembly is used for positioning the round bar. And the positioning assembly is used for stretching into the side hole of the round bar so as to limit the round bar to rotate around the axis of the round bar when the round bar is bent. The positioning assembly is arranged and extends into the side hole of the round bar, the positioning assembly can limit the round bar to rotate around the axis of the round bar when the round bar is bent so as to ensure that the orientation of the side hole of the bent round bar can meet the expectation, the positioning assembly is arranged to be in sliding connection with the mounting structure, and the positioning assembly can be close to or away from the supporting face. Therefore, round bars with different diameters can be installed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of bending processing, in particular to a bending positioning fixture and a bending device. Background Art

[0002] Bending is a common mechanical processing technology and is widely used in many fields. During the bending process, a round bar is usually placed on a bending positioning fixture, and then the round bar is bent by a bending mechanism. In the processing of some parts, such as door handles, side holes (through holes or blind holes extending radially) are provided on the round bar, and the side holes are required to be assembled with the door body, so it is necessary to ensure that the orientation of the side holes on the round bar after bending can meet the expectations.

[0003] In the related art, a clamping mechanism is usually arranged on the bending positioning fixture to clamp and fix the round bar by the clamping mechanism. This method can adapt to round bars with different diameters, but limited by the shape characteristics of the round bar, the round bar is prone to rotate around its own axis during the bending process, resulting in the orientation of the side holes after bending not meeting the expectations. Or, a pin is arranged on the bending positioning fixture, and the pin cooperates with the side hole to limit the round bar from rotating around its own axis during the bending process, so as to ensure that the orientation of the side holes after bending can meet the expectations, but this method cannot be applied to round bars with different diameters. Therefore, there is an urgent need for a bending positioning fixture that can ensure that the orientation of the side holes on the round bar after bending can meet the expectations and can be applied to round bars with different diameters. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a bending positioning fixture and a bending device, which can ensure that the orientation of the side holes on the round bar after bending meets the expectations while being applicable to round bars with different diameters.

[0005] In a first aspect, an embodiment of the utility model provides a bending positioning fixture. The bending positioning fixture includes an installation structure and a positioning component. The installation structure has a support surface for carrying the round bar. The positioning component is slidably connected to the installation structure and can slide relative to the installation structure to approach or move away from the support surface. The positioning component is used to extend into the side hole of the round bar to limit the round bar from rotating around its own axis during bending.

[0006] The bending positioning fixture provided by the embodiment of the first aspect of the utility model has at least the following beneficial effects:

[0007] By setting a positioning component that extends into the side hole of the round bar, the positioning component can restrict the rotation of the round bar around its own axis during bending to ensure that the orientation of the side hole after bending the round bar can meet the expectations, and by setting the positioning component to be slidably connected to the installation structure, the positioning component can move closer to or away from the support surface to facilitate the installation of round bars with different diameters.

[0008] In one embodiment of this implementation manner, the positioning component includes: a positioning block slidably connected to the installation structure; a thimble slidably connected to the positioning block for extending into the side hole, and the sliding direction of the thimble relative to the positioning block intersects with the sliding direction of the positioning block relative to the installation structure.

[0009] In one embodiment of this implementation manner, the positioning component includes an elastic member connected to the thimble, and the deformation direction of the elastic member is the same as the sliding direction of the thimble relative to the positioning block.

[0010] In one embodiment of this implementation manner, the positioning block is provided with a positioning hole, one end of the thimble is slidably matched with the positioning hole, the other end of the thimble extends out of the positioning hole, and the elastic member is accommodated in the positioning hole.

[0011] In one embodiment of this implementation manner, the positioning hole is configured as a through hole, and the end of the elastic member facing away from the thimble is connected to the installation structure, or the positioning hole is configured as a blind hole, and the end of the elastic member facing away from the thimble is connected to the bottom wall of the positioning hole.

[0012] In one embodiment of this implementation manner, the positioning component includes: a positioning block slidably connected to the installation structure; and a locking member provided on the positioning block, and the locking member can be connected to the installation structure to restrict the sliding of the positioning block relative to the installation structure.

[0013] In one embodiment of this implementation manner, a first limiting boss is provided on the outer periphery of the thimble, and a second limiting boss is provided on the inner wall of the positioning hole. Under the action of the elastic member, the first limiting boss elastically abuts against the second limiting boss.

[0014] In one embodiment of this implementation manner, the installation structure includes: a bearing component having the support surface; a sliding member connected to the positioning component, and the sliding member is slidably connected to the bearing component to drive the positioning component to slide relative to the bearing component along a direction parallel to the support surface.

[0015] In one embodiment of this implementation manner, the bearing component includes a bearing table and a slide rail. The slide rail is provided on the bearing table, and the slide rail is provided with a chute, and the sliding member is matched with the chute, or the sliding member is provided with a chute, and the slide rail is matched with the chute.

[0016] In one embodiment of this implementation, the supporting assembly includes a supporting platform, a slide rail and a fastener, the slide rail is provided with a strip hole, the fastener passes through the strip hole and is connected to the supporting platform, and the slide rail and the sliding member are slidably matched.

[0017] In one embodiment of this implementation, the slide rail is provided with a plurality of fixed blocks, each of the fixed blocks is provided with the strip-shaped hole, the number of the fasteners is multiple, and the multiple fasteners are respectively passed through the corresponding strip-shaped holes and connected to the supporting platform.

[0018] In a second aspect, an embodiment of the present invention provides a bending device, which includes the bending positioning jig and a bending mechanism described in any one embodiment of the first aspect of the embodiment, and the bending mechanism is used to bend the round rod on the bending positioning jig.

[0019] The bending device provided by the second embodiment of the present invention has at least the following beneficial effects:

[0020] By adding the bending positioning jig provided by the first embodiment of the utility model to the bending device, it can be better ensured that the direction of the side hole of the round rod after bending meets the expectations, and it can be applicable to round rods of different diameters, which is conducive to improving processing accuracy and applicability.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a bending and positioning fixture according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the bending positioning fixture from another perspective;

[0025] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the bending positioning fixture in a cross-sectional state;

[0026] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of region I.

[0027] Reference numerals:

[0028] Bending positioning jig 100; mounting structure 10; bearing component 11; bearing table 111; slide rail 112; fixing block 1120; strip hole 1121; fastener 113; sliding member 12; slider 121; mounting block 122; supporting surface 101; chute 102; guide groove 103; positioning component 20; positioning block 21; positioning hole 211; second limiting boss 2111; ejector pin 22; first limiting boss 221; elastic member 23; locking member 24; limiting block 30. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0030] In the description of the present invention, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0033] In the description of the present invention, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic perspective view of the bending positioning fixture 100 under an embodiment of an implementation manner of the present utility model; Figure 2 is Figure 1 a schematic perspective view of the bending positioning fixture 100 of

[0035] from another perspective. The implementation manner of the present utility model provides a bending positioning fixture 100. The bending positioning fixture 100 includes an installation structure 10 and a positioning component 20. The installation structure 10 has a support surface 101, and the support surface 101 is used for carrying a round bar. The positioning component 20 is slidably connected to the installation structure 10, and the positioning component 20 can slide relative to the installation structure 10 to approach or move away from the support surface 101. The positioning component 20 is used to extend into the side hole of the round bar to limit the rotation of the round bar around its own axis during bending. Specifically, the support surface 101 can be in contact with the side surface of the round bar to carry the round bar. In this embodiment, the sliding direction of the positioning component 20 relative to the installation structure 10 is perpendicular to the support surface 101. In other embodiments, the sliding direction of the positioning component 20 relative to the installation structure 10 can also form an angle greater than 0 degrees and less than 90 degrees with the support surface 101, and it can also achieve that the positioning component 20 can approach or move away from the support surface 101 when sliding relative to the installation structure 10. In this embodiment, the round bar is a bar stock with a circular cross-section. In other embodiments, the round bar can also be a bar stock with an elliptical cross-section, or some other bar stocks with a curved outer peripheral surface. In this embodiment, the round bar is the raw material of a door handle, and the round bar is provided with a side hole (through hole) extending along the diameter direction, and the side hole is used for installing with the door body. The orientation of the side hole of the round bar is horizontal, and the round bar is bent in the horizontal plane. It is necessary to ensure that after the round bar is bent along the horizontal plane, the orientation of the side hole is still horizontal. In other embodiments, the plane along which the round bar is bent and the orientation of the side hole can also be other relationships, such as perpendicular.

[0036] It can be understood that when applied to the bending processing of round bars with different diameters, the positioning component 20 can extend into the side hole of the round bar and slide relative to the installation structure 10 to adapt to the size of the round bar. For example, when applied to the bending processing of a round bar with a larger diameter, the positioning component 20 can slide relative to the installation structure 10 and move away from the support surface 101. Or, when applied to the bending processing of a round bar with a smaller diameter, the positioning component 20 can slide relative to the installation structure 10 and approach the support surface 101.

[0037] By setting the positioning component 20, the positioning component 20 extends into the side hole of the round bar. The positioning component 20 can restrict the round bar from rotating around its own axis during bending to ensure that the orientation of the side hole after bending of the round bar can meet the expectation. And by setting that the positioning component 20 is slidably connected to the mounting structure 10, the positioning component 20 can be close to or away from the support surface 101, so as to facilitate the installation of round bars with different diameters.

[0038] In an embodiment of this implementation manner, please refer to Figure 3 and Figure 4 , Figure 3 is Figure 1 the three-dimensional structural schematic diagram of the bending positioning jig 100 in a sectional view; Figure 4 is Figure 3 the enlarged structural schematic diagram of area I of

[0039] In an embodiment of this implementation manner, please refer to Figure 3 and Figure 4 , the positioning component 20 includes an elastic member 23. The elastic member 23 is connected to the ejector pin 22, and the deformation direction of the elastic member 23 is the same as the sliding direction of the ejector pin 22 relative to the positioning block 21. By setting the elastic member 23, under the elastic acting force of the elastic member 23, the ejector pin 22 can elastically abut against the position of the round bar where the side hole is opened, so as to facilitate the ejector pin 22 to tightly press the round bar.

[0040] In this embodiment, the end of the ejector pin 22 is conical, so as to facilitate better full contact with the position of the round bar where the side hole is opened. In other embodiments, the end of the ejector pin 22 can also be constructed into other shapes.

[0041] In an embodiment of this implementation manner, please refer to Figure 3 and Figure 4, the positioning block 21 is provided with a positioning hole 211. One end of the ejector pin 22 is slidably engaged with the positioning hole 211, and the other end of the ejector pin 22 extends out of the positioning hole 211. The elastic member 23 is accommodated in the positioning hole 211. Specifically, in this embodiment, the elastic member 23 is a spring, and the spring is in a compressed state in the positioning hole 211. The compression direction of the spring, that is, the deformation direction, is the same as the extending direction of the positioning hole 211. With such a setting, one end of the ejector pin 22 is slidably engaged with the positioning hole 211, and the other end of the ejector pin 22 can extend out of the positioning hole 211 and extend into the side hole of the round bar, so as to realize the sliding connection between the ejector pin 22 and the positioning block 21, and the positioning of the round bar by the ejector pin 22. At the same time, the elastic member 23 can be installed in the positioning hole 211, and the overall structure is relatively simple, with high space utilization rate and low cost.

[0042] In an embodiment of this implementation manner, please refer to Figure 3 and Figure 4 , the positioning hole 211 is configured as a through hole, and one end of the elastic member 23 facing away from the ejector pin 22 is connected to the mounting structure 10. With such a setting, the structure of the positioning assembly 20 is relatively simple and the cost is low.

[0043] In other embodiments, the positioning hole 211 can also be configured as a blind hole, and one end of the elastic member 23 facing away from the ejector pin 22 is connected to the bottom wall of the positioning hole 211, which can also make the structure of the positioning assembly 20 simple and is beneficial to reducing the cost.

[0044] In an embodiment of this implementation manner, please refer to Figure 3 and Figure 4 , a first limiting boss 221 is provided on the outer periphery of the ejector pin 22, and a second limiting boss 2111 is provided on the inner wall of the positioning hole 211. Under the action of the elastic member 23, the first limiting boss 221 is elastically abutted against the second limiting boss 2111. Specifically, there is a spacing distance between the first limiting boss 221 and the inner wall of the positioning hole 211 to facilitate the sliding of the ejector pin 22 along the positioning hole 211. By providing the first limiting boss 221 on the outer periphery of the ejector pin 22 and the second limiting boss 2111 on the inner wall of the positioning hole 211, the second limiting boss 2111 can be abutted against the first limiting boss 221 for limiting to prevent the ejector pin 22 from disengaging from the positioning hole 211.

[0045] In an embodiment of this implementation manner, please refer to Figure 3 and Figure 4, the positioning component 20 includes a locking member 24. The locking member 24 is disposed on the positioning block 21 and can be connected to the mounting structure 10 to limit the sliding of the positioning block 21 relative to the mounting structure 10. Specifically, in this embodiment, the locking member 24 is configured as a pin. The pin passes through the positioning block 21 and is threadedly connected to the positioning block 21. A hexagonal groove is formed on the side of the pin facing away from the positioning block 21 to facilitate turning the pin by cooperating a wrench with the hexagonal groove, so that the pin extends to abut against the mounting structure 10 to limit the sliding of the positioning block 21 relative to the mounting structure 10, or the pin retracts to separate from the mounting structure 10 to release the limitation. In other embodiments, the locking member 24 can also be configured as structures such as screws and buckles. By providing the locking member 24, the locking member 24 can limit the sliding of the positioning block 21 and the mounting structure 10, so as to facilitate adjusting the relative positions of the positioning block 21 and the mounting structure 10 and adapt to installing round bars of different diameters. In addition, under the limitation of the locking member 24, the risk of the round bar shifting in the sliding direction of the positioning block 21 relative to the mounting structure 10 during bending processing can be reduced.

[0046] In other embodiments, the positioning block 21 and the mounting structure 10 can also have an interference-fit sliding connection relationship, that is, the positioning block 21 can be relatively fixed to the mounting structure 10 by relying on the frictional force between the positioning block 21 and the mounting structure 10 to reduce the risk of the round bar shifting during bending processing.

[0047] In some other embodiments, a clamping plate (not shown) can also be provided on the mounting structure 10 to clamp the round bar to reduce the risk of the round bar shifting during bending processing.

[0048] In an embodiment of this implementation manner, please refer to Figure 1 and Figure 2 , the mounting structure 10 includes a bearing component 11 and a sliding member 12. The bearing component 11 has a supporting surface 101. The sliding member 12 is connected to the positioning component 20 and is slidably connected to the bearing component 11 to drive the positioning component 20 to slide relative to the bearing component 11 along a direction parallel to the supporting surface 101. Specifically, the sliding member 12 is provided with a guide groove 103, and the positioning block 21 is slidably engaged with the guide groove 103. The extending direction of the guide groove 103 is the sliding direction of the positioning block 21 relative to the sliding member 12. In this embodiment, the guide groove 103 is a T-shaped groove, and the extending direction of the T-shaped groove is perpendicular to the supporting surface 101. In other embodiments, the guide groove 103 can be a groove body of other shapes. By providing the sliding connection between the sliding member 12 and the bearing component 11, the sliding member 12 can move along a direction parallel to the supporting surface 101 to facilitate applying to round bars of different lengths.

[0049] In this embodiment, the sliding member 12 includes a slider 121 and a mounting block 122. The slider 121 is slidably connected to the bearing assembly 11. The mounting block 122 is mounted on the slider 121 and has a guide groove 103. In other embodiments, the slider 121 and the mounting block 122 can also be constructed as an integrated structure.

[0050] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 The bearing assembly 11 includes a bearing platform 111 and a slide rail 112, and the slide rail 112 is arranged on the bearing platform 111. The slide rail 112 is provided with a slide groove 102, and the sliding member 12 cooperates with the slide groove 102. Specifically, the bottom surface of the bearing platform 111 is used to be placed on the ground or the surface of some equipment to form a support. The top surface of the bearing platform 111 is the support surface 101. Such an arrangement can realize the relative sliding of the sliding member 12 and the bearing assembly 11, and the structure is relatively simple, which is conducive to reducing costs.

[0051] In other embodiments, the sliding member 12 may be provided with a sliding groove 102 , and the sliding rail 112 cooperates with the sliding groove 102 , which can also simplify the structure and reduce the cost.

[0052] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 The support assembly 11 includes a fastener 113. The slide rail 112 defines a strip-shaped hole 1121. The fastener 113 passes through the strip-shaped hole 1121 and is connected to the support platform 111. Specifically, the extension direction of the strip-shaped hole 1121 is perpendicular to the sliding direction of the slider 12 relative to the slide rail 112 and parallel to the support surface 101. This arrangement facilitates adjustment of the orientation of the slide rail 112, thereby adjusting the relative angle between the positioning assembly 20 and the bending mechanism, which helps improve processing accuracy.

[0053] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2 The slide rail 112 is provided with a plurality of fixed blocks 1120, each of which is provided with a strip-shaped hole 1121. There are a plurality of fasteners 113, each of which is passed through the corresponding strip-shaped holes 1121 and connected to the support platform 111. Specifically, in this embodiment, there are two fixed blocks 1120, which are spaced apart and each of which is provided with a strip-shaped hole 1121. This arrangement facilitates adjustment of the position and angle of the slide rail 112, thereby adjusting the relative position and angle of the positioning assembly 20 and the bending structure, which is conducive to further improving processing accuracy.

[0054] In one embodiment of this embodiment, please refer to Figure 1 and Figure 2The bending and positioning jig 100 further includes a limit block 30 mounted on the slide groove 102 of the slide rail 112. The limit block 30 is located on the side of the slide 12 away from the bending mechanism to limit the excessive sliding of the positioning assembly 20 along the slide groove 102 by the slide 12, thereby ensuring the safety of the bending process.

[0055] See also Figure 1 The embodiment of the present invention further provides a bending device, which includes a bending positioning jig 100 and a bending mechanism, and the bending mechanism is used to bend the round rod on the bending positioning jig 100. Specifically, the bending mechanism and the bending positioning jig 100 are arranged adjacent to each other, so that the bending mechanism can bend the round rod installed on the bending positioning jig 100. By adding the bending positioning jig 100 provided by the present invention to the bending device, it can be better ensured that the direction of the side hole of the round rod after bending is in line with the expectation, and it can be applied to round rods of different diameters, which is conducive to improving processing accuracy and applicability.

[0056] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. In addition, the embodiments of the present invention and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A bending positioning fixture (100), characterized in that, Comprising: An installation structure (10) having a support surface (101) for carrying a round bar; And A positioning assembly (20) slidably connected to the installation structure (10). The positioning assembly (20) can slide relative to the installation structure (10) to approach or move away from the support surface (101). The positioning assembly (20) is used to extend into a side hole of the round bar to restrict the round bar from rotating about its own axis during bending.

2. The bending positioning fixture (100) according to claim 1, characterized in that, The positioning assembly (20) includes: A positioning block (21) slidably connected to the installation structure (10); and A thimble (22) slidably connected to the positioning block (21) for extending into the side hole. The sliding direction of the thimble (22) relative to the positioning block (21) intersects with the sliding direction of the positioning block (21) relative to the installation structure (10).

3. The bending positioning jig (100) according to claim 2, wherein, The positioning assembly (20) includes an elastic member (23) connected to the thimble (22). The deformation direction of the elastic member (23) is the same as the sliding direction of the thimble (22) relative to the positioning block (21).

4. The bending positioning jig (100) according to claim 3, wherein, The positioning block (21) is provided with a positioning hole (211). One end of the thimble (22) is slidably engaged with the positioning hole (211), and the other end of the thimble (22) extends out of the positioning hole (211). The elastic member (23) is accommodated in the positioning hole (211).

5. The bending positioning jig (100) according to claim 4, characterized in that, The positioning hole (211) is configured as a through hole, and the end of the elastic member (23) facing away from the thimble (22) is connected to the installation structure (10), or the positioning hole (211) is configured as a blind hole, and the end of the elastic member (23) facing away from the thimble (22) is connected to the bottom wall of the positioning hole (211).

6. The bending positioning jig (100) according to claim 4, characterized in that, A first limiting boss (221) is provided on the outer periphery of the thimble (22), and a second limiting boss (2111) is provided on the inner wall of the positioning hole (211). Under the action of the elastic member (23), the first limiting boss (221) elastically abuts against the second limiting boss (2111).

7. The bending positioning fixture (100) according to claim 1, wherein The positioning assembly (20) includes: A positioning block (21) slidably connected to the installation structure (10); and A locking member (24) provided on the positioning block (21). The locking member (24) can be connected to the installation structure (10) to restrict the positioning block (21) from sliding relative to the installation structure (10).

8. The bending positioning jig (100) according to claim 1, wherein The installation structure (10) includes: A carrying assembly (11) having the support surface (101); A sliding member (12) connected to the positioning assembly (20). The sliding member (12) is slidably connected to the carrying assembly (11) to drive the positioning assembly (20) to slide relative to the carrying assembly (11) in a direction parallel to the support surface (101).

9. The bending positioning fixture (100) according to claim 8, characterized in that, The bearing component (11) includes a bearing table (111), a slide rail (112) and a fastener (113). The slide rail (112) is provided with a strip-shaped hole (1121). The fastener (113) passes through the strip-shaped hole (1121) and is connected to the bearing table (111). The slide rail (112) and the sliding member (12) are in sliding fit.

10. A bending device, characterized in that, Comprising: The bending and positioning jig (100) according to any one of claims 1 to 9; and A bending mechanism for bending the round bar on the bending and positioning jig (100).

Images