Butterfly rib three-dimensional extrusion stirrup forming mechanism

Abstract

The utility model belongs to the technical field of steel bar forming, and discloses a butterfly bar three-dimensional extrusion stirrup forming mechanism which comprises a die assembly and a rotation driving assembly, the rotation driving assembly can drive the die assembly to rotate, and the die assembly comprises a machine base, a die, a first driving mechanism and an installation base. The two machine bases are arranged in the first direction in a spaced mode and fixedly connected through a sliding rod, and the output end of the rotation driving assembly is connected with the sliding rod to drive the whole mold assembly to rotate. The mold is located between the two machine bases and fixed to the sliding rod, and two plane butterfly ribs are installed on the mold; when the first driving mechanism drives the mounting seat to move towards the plane butterfly ribs, the ejector block on the mounting seat can extrude the two butterfly ribs to form a three-dimensional butterfly rib; and meanwhile, a guide head on the mounting seat is inserted into each plane butterfly rib for limiting. The device is high in automation degree, the forming efficiency and the welding efficiency can be improved, and the consistency of the three-dimensional butterfly ribs produced in batches is good.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar forming, in particular to a butterfly bar three-dimensional extrusion stirrup forming mechanism. Background Art

[0002] Butterfly bars, also known as 8-shaped bars, are commonly used components in steel mesh. They are made of steel bars welded or tied together, and have the function of reinforcing and enhancing the overall strength of the mesh. Traditionally, butterfly bars are produced using the mode of flat stirrups, which are formed by bending stirrups and then welded by welding machines. The disadvantages of this processing method are low automation, high labor intensity, low forming efficiency, and poor consistency of parts in the same batch.

[0003] After a single butterfly reinforcement stirrup is formed, if a three-dimensional butterfly reinforcement is required, the two stirrups need to be manually placed on the welding mold and automatically welded into one. This processing method has the disadvantages of high labor intensity, high processing cost and low degree of automation resulting in low forming efficiency. Utility Model Content

[0004] The utility model aims to provide a butterfly bar three-dimensional extrusion stirrup forming mechanism to solve the problem of low efficiency in three-dimensional butterfly bar forming.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a butterfly bar three-dimensional extrusion stirrup forming mechanism, comprising a mold assembly and a rotation drive assembly, wherein the rotation drive assembly can drive the mold assembly to rotate; the mold assembly comprises:

[0007] A machine base, wherein two machine bases are provided, the two machine bases are spaced apart along a first direction and fixedly connected by a slide bar, and the output end of the rotation drive assembly is connected to the slide bar to drive the mold assembly to rotate as a whole;

[0008] A mold, the mold is located between the two machine bases and fixed on the slide bar, a flat butterfly rib is installed on both sides of the mold along the first direction, and the two flat butterfly ribs are parallel to each other;

[0009] A first driving mechanism, wherein two first driving mechanisms are provided, and the two first driving mechanisms are respectively arranged on two of the machine bases, and the output ends of the two first driving mechanisms are both arranged toward the planar butterfly rib;

[0010] A mounting seat, wherein two mounting seats are provided, and the output ends of the two first driving mechanisms are respectively connected to the two mounting seats. An end of the mounting seat that is away from the first driving mechanism is provided with a top block and a guide head. When the first driving mechanism drives the mounting seat to move toward the planar butterfly rib, the top block can squeeze the two planar butterfly ribs to form a three-dimensional butterfly rib; at the same time, the guide head is inserted into each of the planar butterfly ribs to limit the two ends of the planar butterfly rib.

[0011] In some embodiments, two sliding bars are provided, and the two sliding bars are spaced apart on both sides of the base along a second direction, and the second direction is perpendicular to the first direction.

[0012] In some embodiments, the mounting base is slidably connected to the two sliding rods.

[0013] In some embodiments, the mold assembly also includes a displacement sensor, which includes a fixed part and a movable part. One of the fixed part and the movable part is connected to the machine base, and the other is connected to the mounting base. The displacement sensor is communicatively connected to the first driving mechanism.

[0014] In some embodiments, two molds are provided, and the two molds are spaced apart along the second direction. The two ends of the planar butterfly ribs are respectively attached to and fixed on the sides of the two molds. Positioning holes are respectively provided on both sides of the molds, and the guide head can be inserted into the positioning hole after passing through the planar butterfly ribs.

[0015] In some embodiments, the side surfaces of the two molds for fixing the planar butterfly ribs are both parallel flat surfaces; or,

[0016] The side surfaces are all arc surfaces having a same-side curvature along the first direction.

[0017] In some embodiments, the positioning hole is an elongated hole, and the major axis of the elongated hole is arranged along the second direction.

[0018] In some embodiments, the guide heads are located on both sides of the top block along the second direction, and the distance between the guide heads and the top block is adjustable.

[0019] In some embodiments, guide rods are respectively provided on both sides of the top block along the second direction, the guide head is inserted into the guide rods, an elastic member is sleeved on the guide rods, both ends of the elastic member are respectively stopped at the top block and the guide head, an adjusting bolt is provided on the side of the guide head away from the top block, and the adjusting bolt is threadedly connected to the mounting seat and abuts against the guide head.

[0020] In some embodiments, a slide groove is provided on the mounting seat, the long axis of the slide groove is arranged along the second direction, and the guide head is slidably connected in the slide groove.

[0021] In some embodiments, two guide heads are provided on both sides of each top block, the two guide heads are passed through the base and are arranged on the guide rod, and the two guide heads are arranged sequentially along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0022] In some embodiments, the mold has magnetic devices on both sides, and the planar butterfly ribs are magnetically attracted to both sides of the mold; a support plate is provided at the bottom of the mold, and the planar butterfly ribs are supported on the support plate.

[0023] In some embodiments, the rotation drive assembly includes:

[0024] A bracket, wherein a hinge seat and a bearing seat are provided on the bracket, a rotating shaft is provided in the bearing seat, and the rotating shaft is connected to a slide bar of the mold assembly;

[0025] A second driving mechanism, wherein one end of the second driving mechanism is hinged to the hinge seat through a first hinge shaft, and the other end of the second driving mechanism is provided with a second hinge shaft;

[0026] A swing arm, one end of which is connected to the second hinge shaft, and the other end of which is connected to an end of the rotating shaft away from the sliding rod.

[0027] Beneficial effects of the utility model:

[0028] The butterfly bar three-dimensional extrusion stirrup forming mechanism provided by the utility model can simultaneously set two planar butterfly bars on both sides of the mold by setting a mold assembly, so that the first driving mechanism can simultaneously extrude the two planar butterfly bars to form three-dimensional butterfly bars, and the forming efficiency is high and the consistency of batch three-dimensional butterfly bars is good. By setting a rotating driving assembly to drive the rotation of the mold assembly, it is convenient to weld and fix the two sides of the three-dimensional butterfly bar respectively, improve welding efficiency, avoid manual operation, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of a butterfly bar three-dimensional extrusion stirrup forming mechanism provided by an embodiment of the utility model;

[0030] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0031] Figure 3 It is a front view of a butterfly bar three-dimensional extrusion stirrup forming mechanism provided by an embodiment of the utility model;

[0032] Figure 4It is a side view of a butterfly bar three-dimensional extrusion stirrup forming mechanism provided by an embodiment of the utility model;

[0033] Figure 5 It is a top view of a butterfly bar three-dimensional extrusion stirrup forming mechanism provided by an embodiment of the utility model;

[0034] Figure 6 This is a schematic diagram of the structure of a three-dimensional butterfly tendon prepared in an embodiment of the utility model;

[0035] Figure 7 is a structural schematic diagram of a first type of mold involved in an embodiment of the present invention;

[0036] Figure 8 is a schematic structural diagram of a second mold involved in an embodiment of the present invention;

[0037] Fig. 9 is a schematic structural diagram of a plane-symmetrical butterfly rib involved in an embodiment of the present invention;

[0038] Fig.10 It is a schematic structural diagram of a planar arc-shaped butterfly rib involved in an embodiment of the present invention.

[0039] In the figure:

[0040] 100, flat butterfly tendons; 200, three-dimensional butterfly tendons;

[0041] 1. Machine base; 11. Sliding rod; 12. Sleeve; 13. Locking piece;

[0042] 2. Mold; 21. Positioning hole; 22. Magnetic device; 23. Support plate; 231. Avoidance hole;

[0043] 3. A first driving mechanism;

[0044] 4. Mounting seat; 41. Top block; 411. Limiting groove; 412. Guide rod; 413. Elastic member; 414. Adjusting bolt; 42. Guide head; 421. Sliding block; 43. Sliding groove;

[0045] 5. Displacement sensor;

[0046] 6. Bracket; 61. Articulated seat; 611. First articulated shaft; 62. Bearing seat; 621. Rotating shaft; 7. Second driving mechanism; 71. Second articulated shaft; 8. Swing arm; 81. Spacer; 82. Connecting bolt; 83. Pressure cover. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0051] The utility model embodiment provides a butterfly bar three-dimensional extrusion stirrup forming mechanism, such as Figure 1-Figure 6, used to extrude two planar butterfly ribs 100 once to form a three-dimensional butterfly rib 200. The butterfly rib three-dimensional extrusion stirrup forming mechanism includes a mold assembly and a rotation drive assembly. The mold assembly is used to fix the planar butterfly rib 100 and form the three-dimensional butterfly rib 200. The rotation drive assembly can drive the mold assembly to rotate, so that the welding mechanism can weld and fix the three-dimensional butterfly rib 200 at different rotation positions. Specifically, in this embodiment, the mold assembly includes a machine base 1, a mold 2, a first drive mechanism 3 and a mounting base 4. The machine base 1 is provided with two, and the two machine bases 1 are arranged at intervals along the first direction (X direction) and are fixedly connected by a slide bar 11. The output end of the rotation drive assembly is connected to the slide bar 11 to drive the mold assembly to rotate as a whole; the mold 2 is located between the two machine bases 1 and fixed on the slide bar 11, so that the mold 2 can rotate with the slide bar 11. A planar butterfly rib 100 is installed on both sides of the mold 2 along the first direction, and the two planar butterfly ribs 100 are parallel to each other; the two planar butterfly ribs 100 arranged on both sides have a spacing distance, so that they are close to each other when subjected to extrusion force. There are two first drive mechanisms 3, which are arranged on two machine bases 1. The output ends of the two first drive mechanisms 3 are both arranged toward the planar butterfly ribs 100. The output ends of the first drive mechanisms 3 approach the two planar butterfly ribs 100 and squeeze the two planar butterfly ribs 100 to form a three-dimensional butterfly rib 200. There are two mounting seats 4, and the output ends of the two first drive mechanisms 3 are respectively connected to the two mounting seats 4. The end of the mounting seat 4 away from the first drive mechanism 3 is provided with a top block 41 and a guide head 42. When the first drive mechanism 3 drives the mounting seat 4 to move toward the planar butterfly rib 100, the top block 41 can squeeze the two planar butterfly ribs 100 to form a three-dimensional butterfly rib 200; at the same time, the guide head 42 is inserted into each planar butterfly rib 100 to limit the two ends of the planar butterfly rib 100. It can be understood that by setting the top block 41 and the guide head 42 on the mounting seat 4, the extrusion forming force can be accurately applied to the middle position of the planar butterfly rib 100, and by setting the shape of the force-applying surface of the top block 41, the planar butterfly rib 100 can be extruded and formed into a three-dimensional butterfly rib 200 of a certain shape. In some embodiments, in order to increase the stability of the contact surface between the top block 41 and the planar butterfly rib 100, the force-applying surface of the top block 41 is provided with a limiting groove 411 that matches the outer diameter size of the two steel bars of the planar butterfly rib 100. When the top block 41 contacts the middle position of the planar butterfly rib 100, the steel bars at the middle position can be limited in the limiting groove 411 to form an extrusion forming in a certain direction.

[0052] The butterfly rib three-dimensional extrusion stirrup forming mechanism provided by the utility model has a high degree of automation, which is conducive to improving the forming efficiency and forming quality of the three-dimensional butterfly rib 200. Specifically, by setting the mold assembly, the two planar butterfly ribs 100 can be set on both sides of the mold 2 at the same time, which is convenient for the first drive mechanism 3 to extrude the two planar butterfly ribs 100 at the same time to form the three-dimensional butterfly rib 200 in one step, and the forming efficiency is high and the consistency of the three-dimensional butterfly ribs 200 produced in batches is good. By setting a rotating drive assembly to drive the rotation of the mold assembly, it is convenient to weld and fix the two sides of the three-dimensional butterfly rib 200 respectively, improve welding efficiency, avoid manual operation, and improve safety.

[0053] In some embodiments, two slide bars 11 are provided, and the two slide bars 11 are spaced apart on both sides of the base 1 along the second direction (Y direction), and the second direction (Y direction) is perpendicular to the first direction (X direction).

[0054] like Figure 1 As shown, sleeves 12 are provided on both sides of the machine base 1 along the second direction, and the two ends of the slide bar 11 are respectively inserted into the sleeves 12 on the same side of the two machine bases 1 and are locked and fixed by the locking member 13. In some embodiments, the two ends of the slide bar 11 are provided with a limiting boss and an external thread, and the locking member 13 is provided with an internal thread. After the slide bar 11 is inserted through the sleeve 12 on the machine base 1, the locking member 13 is threadedly connected to the slide bar 11, and the sleeve 12 is limited between the limiting boss and the locking member 13, so that the two machine bases 1 are fixedly connected, and the relative position is fixed, so that the rotation drive mechanism can drive the slide bar 11 to rotate or flip the mold assembly as a whole.

[0055] In some embodiments, the mounting base 4 is slidably connected to two sliding rods 11 .

[0056] like Figure 1 , the two sides of the mounting seat 4 along the second direction are respectively sleeved on two slide bars 11, so as to slide under the guidance of the slide bars 11. Preferably, a linear bearing can be provided between the mounting seat 4 and the slide bar 11 for linear sliding connection, so as to improve the guiding accuracy in the sliding direction and reduce sliding friction.

[0057] In some embodiments, the mold assembly also includes a displacement sensor 5, which includes a fixed part and a movable part. One of the fixed part and the movable part is connected to the machine base 1, and the other is connected to the mounting base 4. The displacement sensor 5 is communicatively connected to the first driving mechanism 3.

[0058] By setting the displacement sensor 5, the stroke of the output end of the first drive mechanism 3 can be preset, so that the output end of the first drive mechanism 3 can drive the mounting seat 4 to move the specified stroke to obtain a three-dimensional butterfly rib 200 of a specified shape. It can be understood that when the two first drive mechanisms 3 are symmetrically arranged on both sides of the mold 2, the output ends of the two first drive mechanisms 3 run the same stroke to form a three-dimensional butterfly rib 200 with the same deformation shape of the two-side plane butterfly ribs 100; when the strokes of the output ends of the two first drive mechanisms 3 are different, the two plane butterfly ribs 100 will be bent and deformed to different degrees in the process of forming the three-dimensional butterfly rib 200, and then a variety of different forms of three-dimensional butterfly ribs 200 can be obtained. Even if the two first drive mechanisms 3 are installed in an asymmetrical manner, the displacement sensor 5 can be used to realize the forming of different forms of three-dimensional butterfly ribs 200. Of course, the displacement sensor 5 can also be replaced by a controller, etc., and the controller directly controls the stroke of the output end of the first drive mechanism 3, which is simpler to control.

[0059] In some embodiments, two molds 2 are provided, and the two molds 2 are spaced apart along the second direction. The two ends of the planar butterfly rib 100 are respectively attached to and fixed on the sides of the two molds 2. Positioning holes 21 are respectively provided on both sides of the mold 2. The guide head 42 can penetrate the planar butterfly rib 100 and then be inserted into the positioning hole 21.

[0060] like Figure 1-Figure 3 As shown, the vertical surface of the planar butterfly rib 100 is arranged along the Z direction, and the butterfly holes at both ends of the planar butterfly rib 100 are arranged along the second direction. The two planar butterfly ribs 100 are both attached to the sides of the thickness direction of the third direction (Z direction) of the two molds 2. In this embodiment, magnetic devices 22 such as magnets are provided on both sides of the mold 2, and the planar butterfly ribs 100 are magnetically attracted to both sides of the mold 2 for easy installation and disassembly; a support plate 23 is provided at the bottom of the mold 2, and the planar butterfly rib 100 is supported on the support plate 23. It should be supplemented that an avoidance hole 231 needs to be provided on the support plate 23 to facilitate the welding mechanism to perform welding operations on the three-dimensional butterfly rib 200 through both sides of the support plate 23. There is a gap between the two molds 2 so that the middle positions of the two planar butterfly ribs 100 can contact at the gap and form the middle position of the three-dimensional butterfly rib 200, and it is convenient for subsequent welding operations. The two positioning holes 21 of the mold 2 are long strip holes, and the long axis of the long strip holes is extended along the second direction. When the guide head 42 is displaced along the second direction or the size of the flat butterfly rib 100 changes, the guide head 42 can be inserted into the positioning hole 21 to limit the flat butterfly rib 100, so as to prevent the displacement and deformation of the flat butterfly rib 100 during extrusion molding and affect the shape of the three-dimensional butterfly rib 200. The two molds 2 are fixed on the two slide bars 11. The output end of the rotation drive assembly is fixedly connected to the slide bar 11 at the mold 2 so as to rotate the three-dimensional butterfly rib 200 with the smallest space.

[0061] In some embodiments, the positioning hole 21 is an elongated hole, and the major axis of the elongated hole is arranged along the second direction. The number of the positioning holes 21 is arranged corresponding to the number of the guide heads 42.

[0062] In some embodiments, the guide heads 42 are located on both sides of the top block 41 along the second direction, and the distance between the guide heads 42 and the top block 41 is adjustable.

[0063] like Figure 2 It can be understood that the top block 41 corresponds to the middle position of the planar butterfly rib 100, and the guide head 42 corresponds to the butterfly holes at both ends of the planar butterfly rib 100 (the hole structure at both ends of the planar butterfly rib 100). Therefore, the guide head 42 is arranged on both sides of the top block 41 to respectively define the butterfly holes at both ends of the planar butterfly rib 100. When the size of the planar butterfly rib 100 changes, the distance between the guide head 42 and the top block 41 is adjusted so that the guide head 42 can always limit the planar butterfly rib 100. Preferably, the head of the guide head 42 has a smaller outer diameter relative to the root, so that the guide head 42 can smoothly penetrate the butterfly hole and the positioning hole 21. The shape of the guide head 42 is approximately a conical cylinder or a truncated cone cylinder, which is convenient for processing and has a better guiding effect.

[0064] In some embodiments, guide rods 412 are respectively provided on both sides of the top block 41 along the second direction, the guide head 42 is passed through the guide rods 412, an elastic member 413 is sleeved on the guide rod 412, and the two ends of the elastic member 413 are respectively stopped at the top block 41 and the guide head 42, and an adjusting bolt 414 is provided on the side of the guide head 42 away from the top block 41, and the adjusting bolt 414 is threadedly connected to the mounting seat 4 and abuts the guide head 42.

[0065] like Figure 1 and Figure 2 It can be understood that when the position of the guide head 42 needs to be adjusted, it is only necessary to screw the adjusting bolt 414 in or out relative to the machine base 1 to push the guide head 42 to adjust its position in the second direction, and the adjustment is convenient and quick. Here, the elastic member 413 can be a compression spring. Of course, when the guide rod 412 passes through the other side of the guide head 42, the adjusting bolt 414 can also be threadedly connected to the end of the guide rod 412 using an adjusting nut, and the guide head 42 elastically abuts against the elastic member 413 under the action of the adjusting nut, so as to achieve the position adjustment of the guide head 42 in the second direction.

[0066] In some embodiments, a slide groove 43 is provided on the mounting seat 4 , the long axis of the slide groove 43 is arranged along the second direction, and the guide head 42 is slidably connected in the slide groove 43 .

[0067] Preferably, if Figure 2The slide groove 43 is set as a T-shaped groove, and the root of the guide head 42 is provided with a slider 421 with a T-shaped cross-section. The slider 421 at the root of the guide head 42 is slidably connected in the slide groove 43, which can ensure that the guide head 42 is always attached to and fixed on the mounting seat 4, limit the position of the guide head 42 along the first direction, and assist the guide rod 412 in guiding.

[0068] In some embodiments, two guide heads 42 are provided on both sides of each top block 41, and the two guide heads 42 are passed through the base and arranged on the guide rod 412. The two guide heads 42 are arranged in sequence along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0069] like Figure 1 and Figure 2 The two guide heads 42 share a base, such as an integral structure with the base or a fixed connection to form a whole, and the guide rod 412 and the mounting seat 4 are slidably connected through the base to facilitate the synchronous adjustment of the two guide heads 42. By setting two guide heads 42, the width requirement of the butterfly hole of the planar butterfly rib 100 can be met, avoiding the butterfly hole from becoming smaller due to extrusion deformation, thereby affecting the overall appearance size.

[0070] In some embodiments, the rotation drive assembly includes a bracket 6, a second drive mechanism 7 and a swing arm 8. The bracket 6 is provided with a hinge seat 61 and a bearing seat 62. A rotating shaft 621 is provided in the bearing seat 62. The rotating shaft 621 is connected to the slide rod 11 of the mold assembly; the rotating shaft 621 is arranged along the second direction through the bearing seat 62, one end of the second drive mechanism 7 is hinged to the hinge seat 61 through the first hinge shaft 611, and the other end is provided with a second hinge shaft 71; one end of the swing arm 8 is connected to the second hinge shaft 71, and the other end is connected to the end of the rotating shaft 621 away from the slide rod 11.

[0071] like Figure 1-Figure 5In order to facilitate the installation of the rotation drive assembly, a bracket 6 is provided in this embodiment, wherein the bearing seat 62 is arranged at a high position relative to the hinge seat 61, and the second drive mechanism 7 is such as an oil cylinder, and the fixed part is installed on the hinge seat 61 through the first hinge shaft 611 to realize the hinge connection between the second drive mechanism 7 and the bracket 6, and the movable part, that is, the output end, is connected to the swing arm 8 through the second hinge shaft 71. When the output end of the second drive mechanism 7 telescopically moves, since the bearing seat 62 is fixed on the bracket 6, the relative positions of the hinge seat 61 and the bearing seat 62 are fixed, so the second drive mechanism 7 realizes the rotation drive of the mold assembly through the swing arm 8. Among them, the swing arm 8 is arc-shaped, so that the second drive mechanism 7 can realize the rotation drive control of the mold assembly within a smaller stroke. Preferably, there are two bearing seats 62, and the rotating shafts 621 on the two bearing seats 62 are coaxial and respectively connected to the two slide bars 11, and one end of the rotating shaft 621 away from the slide bar 11 is connected to the swing arm 8, and when the output end of the second drive mechanism 7 telescopically moves, the mold assembly can rotate with the rotating shaft 621. It can be understood that the structure of the bracket 6 should be arranged to avoid the rotation space of the mold assembly.

[0072] In the above embodiment, shaft holes are provided at both ends of the swing arm 8, one end of the second hinge shaft 71 is fixed to the output end of the second drive mechanism 7, and the other end is provided with a shaft hole and fixedly connected by a bolt and nut assembly, so as to realize the fixed connection between the output end of the second drive mechanism 7 and the swing arm 8. Preferably, a spacer 81 is provided between the output end of the second drive mechanism 7 and the swing arm 8 for isolation, and the spacer 81 is sleeved on the second hinge shaft 71. The end of the rotating shaft 621 away from the slide rod 11 passes through the shaft holes of the bearing seat 62 and the other end of the swing arm 8 in turn and is fixed by a connecting bolt 82 and a pressure cover 83.

[0073] In the above embodiments, the first driving mechanism 3 and the second driving mechanism 7 may respectively adopt oil cylinders, air cylinders, linear motors, etc.

[0074] In the above embodiment, if Figure 1 As shown, in order to facilitate the installation of the rotating shaft 621 and the sliding rod 11, one end of the rotating shaft 621 facing the sliding rod 11 can be sleeved on the sliding rod 11 and fixed by screws or the like, and the mold 2 is fixedly connected to the rotating shaft 621, thereby realizing a fixed connection so that the rotating shaft 621 and the sliding rod 11 can rotate synchronously.

[0075] Using the butterfly bar three-dimensional extrusion stirrup forming mechanism provided in any of the above embodiments, the three-dimensional butterfly bar is obtained through the following steps:

[0076] S1, placing two flat butterfly ribs 100 on both sides of the mold 2;

[0077] In this step, it is necessary to adjust and set the extension size of the output end of the first driving mechanism 3 in advance according to the size requirements of the three-dimensional butterfly rib 200 to be processed by the displacement sensor 5 to determine the height (Z direction) size of the three-dimensional butterfly rib 200, and to determine the width (Y direction) size of the three-dimensional butterfly rib 200 by adjusting the left and right installation positions of the guide head 42. The upper mechanism places the planar butterfly rib 100 symmetrically on the side of the mold 2, and supports it through the support plate 23 installed at the bottom of the mold 2, and uses the magnets on both sides of the mold 2 to attract the side of the planar butterfly rib 100 and fix the planar butterfly rib 100.

[0078] S2, respectively set the strokes of the two first driving mechanisms 3, the output end of the first driving mechanism 3 drives the mounting seat 4 to move toward the planar butterfly rib 100, the guide head 42 on the mounting seat 4 limits the two ends of the planar butterfly rib 100 between the mounting seat 4 and the mold 2, and the top block 41 on the mounting seat 4 squeezes the two planar butterfly ribs 100 against each other to form a three-dimensional butterfly rib 200.

[0079] The output end of the first driving mechanism 3 extends out and drives the mounting seat 4 to move toward the middle, thereby driving the top block 41 and the guide head 42 to move forward. After moving into position, the planar butterfly rib 100 is squeezed into place to form a three-dimensional butterfly rib 200. At this time, the next step S3 is executed, and the welding robot starts to weld the contact position of the two planar butterfly ribs 100.

[0080] S3, welding and fixing one side of the middle position of the three-dimensional butterfly rib 200; after welding, the welding robot automatically moves away. It should be noted that the welding robot is an automatic device for performing welding, which is a prior art.

[0081] S4, the rotary drive assembly drives the mold assembly to rotate as a whole, and welds and fixes the other side of the middle position of the three-dimensional butterfly rib 200.

[0082] In this step, after the mold assembly is driven to rotate to the specified position by the second driving mechanism 7, the welding robot is started again and starts to weld the middle position of the other side of the two three-dimensional butterfly ribs 200. After welding is completed, the welding robot automatically moves away, the second driving mechanism 7 is reset, and the first driving mechanism 3 installed on both sides of the mold assembly is reset. The grabbing mechanism of the next mechanism can take away the finished three-dimensional butterfly rib 200, completing the forming process from the flat butterfly rib 100 to the three-dimensional butterfly rib 200.

[0083] The butterfly bar three-dimensional extrusion stirrup forming mechanism provided by the utility model realizes one-step forming of two planar butterfly bars 100 into three-dimensional butterfly bars 200, with high forming efficiency and good consistency of batch three-dimensional butterfly bars 200. The rotating drive assembly drives the rotation of the mold assembly, which is convenient for welding and fixing the two sides of the three-dimensional butterfly bar 200, improving welding efficiency, avoiding manual operation, and improving safety.

[0084] It should be supplemented that, in step S2 , various specifications of curved molding of the three-dimensional butterfly rib 200 can be automatically realized according to the size required by the customer, and this can be achieved by only setting the difference in the execution strokes of the two first driving mechanisms 3 .

[0085] Specifically, when the plane butterfly rib 100 is Fig. 9 The plane symmetrical butterfly tendon ( Fig. 9 When the plane symmetrical butterfly rib has two symmetry axes, the two molds 2 are used Figure 8 The mold 2 shown, that is, the side surfaces of the two molds 2 used to fix the two plane-symmetrical butterfly ribs, both have curved arc surfaces facing the same side. The two first driving mechanisms 3 are used to push the two plane-symmetrical butterfly ribs closer to each other and contact each other to form the first three-dimensional butterfly ribs. In the first three-dimensional butterfly ribs, by adjusting the extension distance of the output ends of the two first driving mechanisms 3, the two plane-symmetrical butterfly ribs can be deformed to different degrees, thereby obtaining the first three-dimensional butterfly ribs with different shapes.

[0086] When the plane butterfly tendon is 100 Fig.10 The plane arc butterfly tendon (such as Fig.10 When the two sides of the plane arc-shaped butterfly rib shown in FIG. 1 have downward curved arcs and a symmetry axis, the two molds 2 are used Figure 7 The mold 2 shown, that is, the side surfaces of the two molds 2 for fixing the two planar arc-shaped butterfly ribs are parallel to each other. The two first driving mechanisms 3 are used to push the two planar arc-shaped butterfly ribs to approach each other and contact each other to form a second three-dimensional butterfly rib. By setting the extension distance of the output ends of the two first driving mechanisms 3, the two planar arc-shaped butterfly ribs can have the same deformation. Figure 6 The arc-shaped three-dimensional butterfly rib 200 is shown.

[0087] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. The butterfly bar three-dimensional extrusion stirrup forming mechanism is characterized by: The mold assembly comprises a mold component and a rotation drive component, wherein the rotation drive component can drive the mold component to rotate, and the mold component comprises: A machine base (1), wherein two machine bases (1) are provided, the two machine bases (1) are spaced apart along a first direction and are fixedly connected via a slide bar (11), and the output end of the rotation drive assembly is connected to the slide bar (11) to drive the mold assembly to rotate as a whole; A mold (2), the mold (2) being located between the two machine bases (1) and fixed on the slide bar (11), a flat butterfly rib (100) being respectively installed on both sides of the mold (2) along the first direction, and the two flat butterfly ribs (100) being parallel to each other; A first driving mechanism (3), wherein two first driving mechanisms (3) are provided, and the two first driving mechanisms (3) are respectively arranged on two of the machine bases (1), and the output ends of the two first driving mechanisms (3) are both arranged toward the planar butterfly rib (100); The mounting seat (4) is provided with two mounting seats (4), and the output ends of the two first driving mechanisms (3) are respectively connected to the two mounting seats (4); the end of the mounting seat (4) away from the first driving mechanism (3) is provided with a top block (41) and a guide head (42); when the first driving mechanism (3) drives the mounting seat (4) to move toward the planar butterfly rib (100), the top block (41) can squeeze the two planar butterfly ribs (100) to form them into three-dimensional butterfly ribs (200); at the same time, the guide head (42) is inserted into each planar butterfly rib (100) to limit the two ends of the planar butterfly rib (100).

2. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 1 is characterized in that: Two sliding bars (11) are provided, and the two sliding bars (11) are arranged at intervals on both sides of the machine base (1) along a second direction, and the second direction is perpendicular to the first direction.

3. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 2 is characterized in that: The mounting seat (4) is slidably connected to the two sliding rods (11).

4. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 1 is characterized in that: The mold assembly further comprises a displacement sensor (5), the displacement sensor (5) comprising a fixed part and a movable part, one of the fixed part and the movable part being connected to the machine base (1) and the other being connected to the mounting base (4), and the displacement sensor (5) being communicatively connected to the first driving mechanism (3).

5. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 2 is characterized in that: Two molds (2) are provided, and the two molds (2) are spaced apart along the second direction. The two ends of the planar butterfly rib (100) are respectively arranged and fixed on the side surfaces of the two molds (2). Positioning holes (21) are respectively provided on both sides of the mold (2). The guide head (42) can be inserted into the positioning hole (21) after passing through the planar butterfly rib (100).

6. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 5, characterized in that: The side surfaces of the two molds (2) for fixing the planar butterfly ribs (100) are both parallel flat surfaces; or, The side surfaces are all arc surfaces having a same-side curvature along the first direction.

7. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 5, characterized in that: The positioning hole (21) is an elongated hole, and the major axis of the elongated hole is arranged along the second direction.

8. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 5, characterized in that: The guide heads (42) are located on both sides of the top block (41) along the second direction, and the distance between the guide heads (42) and the top block (41) is adjustable.

9. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 8, characterized in that: Guide rods (412) are respectively provided on both sides of the top block (41) along the second direction, the guide head (42) is inserted into the guide rods (412), an elastic member (413) is sleeved on the guide rod (412), two ends of the elastic member (413) respectively abut against the top block (41) and the guide head (42), an adjusting bolt (414) is provided on the side of the guide head (42) away from the top block (41), and the adjusting bolt (414) is threadedly connected to the mounting seat (4) and abuts against the guide head (42).

10. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 9, characterized in that: The mounting seat (4) is provided with a slide groove (43), the long axis of the slide groove (43) is arranged along the second direction, and the guide head (42) is slidably connected in the slide groove (43).

11. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 9, characterized in that: Two guide heads (42) are provided on both sides of each top block (41), and the two guide heads (42) are inserted through the base and arranged on the guide rod (412). The two guide heads (42) are arranged in sequence along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

12. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to claim 1, characterized in that: Magnetic devices (22) are provided on both sides of the mold (2), and the planar butterfly ribs (100) are magnetically attracted to both sides of the mold (2); a support plate (23) is provided at the bottom of the mold (2), and the planar butterfly ribs (100) are supported on the support plate (23).

13. The butterfly bar three-dimensional extrusion stirrup forming mechanism according to any one of claims 1 to 12, characterized in that: The rotary drive assembly comprises: A bracket (6), wherein the bracket (6) is provided with a hinge seat (61) and a bearing seat (62), wherein a rotating shaft (621) is provided inside the bearing seat (62), and wherein the rotating shaft (621) is connected to a slide bar (11) of the mold assembly; A second driving mechanism (7), one end of the second driving mechanism (7) being hinged to the hinge seat (61) via a first hinge shaft (611), and the other end of the second driving mechanism (7) being provided with a second hinge shaft (71); A swing arm (8), one end of the swing arm (8) is connected to the second hinge shaft (71), and the other end is connected to an end of the rotating shaft (621) away from the sliding rod (11).

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