A pipe bending apparatus for thin-walled pipes

Abstract

The utility model relates to a kind of pipe bending device for thin-walled pipe, including main arm, clamping arm and pivot, and the one end of main arm is hinged with the one end of clamping arm by pivot;Clamping arm is equipped with the wheel mode of being coaxially arranged with pivot, and the outside wall of wheel mode is opened with second bending pipe groove along its circumferential direction;Clamping arm and main arm are respectively provided with first transmission mechanism and second transmission mechanism, and first transmission mechanism and second transmission mechanism are respectively transmission matched with clamp mode and guide mode, and the first bending pipe groove corresponding with second bending pipe groove is opened in clamp mode, and the guide slot corresponding with first bending pipe groove is opened in guide mode;First bending pipe groove and second bending pipe groove are used to clamp thin-walled pipe and bend thin-walled pipe;Buffer layer is arranged on first bending pipe groove and second bending pipe groove, and a plurality of anti-skid grooves are opened in buffer layer.The utility model can avoid the external surface of thin-walled pipe to produce pressure injury, scratch and other mechanical damage, improve work efficiency and production quality.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending technology, and in particular to a pipe bending device for thin-walled pipes. Background Technology

[0002] In the aerospace field, thin-walled tubing is often used as piping for fuel systems, hydraulic systems, or environmental control systems due to its advantages such as lightweight and high strength. Because these systems have complex internal spatial layouts, the tubing used in these systems needs to be precisely bent (i.e., pipe bending) to accommodate these complex internal spatial arrangements.

[0003] The existing devices for bending thin-walled pipes have at least the following drawbacks: 1. During the bending process of thin-walled pipes, the outer surface of the thin-walled pipes is easily damaged by pressure and scratches. Therefore, the outer surface of the thin-walled pipes after bending needs to be polished, which greatly reduces production efficiency.

[0004] 2. During the bending process of thin-walled pipes, the thin-walled pipes are prone to slippage and friction with the mold, which will cause mechanical damage to the outer surface of the thin-walled pipes in addition to pressure marks and scratches, greatly reducing the production quality.

[0005] Therefore, there is an urgent need for a pipe bending device for thin-walled pipes, which can avoid crushing and scratching the outer surface of thin-walled pipes, improve work efficiency, and also avoid other mechanical damage to the outer surface of thin-walled pipes besides crushing and scratching, thereby improving production quality. Utility Model Content

[0006] The purpose of this invention is to provide a pipe bending device for thin-walled pipes to solve the problems existing in the prior art.

[0007] To achieve the above objectives, this utility model provides the following solution: This utility model provides a pipe bending device for thin-walled pipes, including a main arm, a clamping arm, and a rotating shaft, wherein: One end of the main arm is hinged to one end of the clamping arm via the pivot. A wheel mold coaxially arranged with the rotating shaft is installed on the clamping arm, and a second bent tube groove is formed on the outer side wall of the wheel mold along its circumference. The clamping arm and the main arm are respectively provided with a first transmission mechanism and a second transmission mechanism. The first transmission mechanism and the second transmission mechanism are respectively driven and cooperated with a clamping mold and a guide mold. The clamping mold is provided with a first bending groove corresponding to the second bending groove, and the guide mold is provided with a guide groove corresponding to the first bending groove. The first and second bending grooves are used to clamp and bend the thin-walled pipe. Both the first and second bends are provided with a buffer layer, and the buffer layer has several anti-slip grooves.

[0008] According to one embodiment of the present invention, the wheel mold is provided with a wheel mold mounting bolt coaxial with the rotating shaft, and the wheel mold is connected to the clamping arm through the wheel mold mounting bolt.

[0009] According to one embodiment of the present invention, the first transmission mechanism includes a first transmission motor, a first lead screw, and a first slider, wherein: The first drive motor is mounted on the clamping arm, the first lead screw is driven by the output shaft of the first drive motor, the first slider is limited and slidably engaged with the outer wall of the clamping arm, the first lead screw is threadedly engaged with the first slider, and the clamping mold is detachably mounted on the first slider.

[0010] According to one embodiment of the present invention, a first slide rail is installed on the outer wall of the clamping arm. The end of the first slide rail near the wheel mold is correspondingly arranged with the wheel mold, and the first slide rail is parallel to the first lead screw. The first slide rail is in a limiting sliding engagement with the first slider, and the first slider is in a limiting sliding engagement with the outer wall of the clamping arm through the first slide rail.

[0011] According to one embodiment of the present utility model, a first mounting block is mounted on the first slider, and a first mounting hole is provided on the first mounting block, which can communicate with the outside of the first mounting block. The clamping mold is equipped with a first connecting block, which is adapted to and detachably installed in the first mounting hole. The clamping mold is detachably connected to the first slider through the first connecting block, the first mounting hole, and the first mounting block.

[0012] According to one embodiment of the present invention, the second transmission mechanism includes a second transmission motor, a second lead screw, and a second slider, wherein: The second drive motor is mounted on the main arm, the second lead screw is driven by the output shaft of the second drive motor, the second slider is limited and slidably engaged with the outer wall of the main arm, the second lead screw is threadedly engaged with the second slider, and the guide mold is detachably mounted on the second slider.

[0013] According to one embodiment of the present invention, a second slide rail is installed on the outer wall of the main arm. The second slide rail is arranged parallel to the second lead screw. The second slide rail is in a limiting sliding engagement with the second slider. The second slider is in a limiting sliding engagement with the outer wall of the main arm through the second slide rail.

[0014] According to one embodiment of the present invention, a second mounting block is mounted on the second slider, and a second mounting hole is provided on the second mounting block, which can communicate with the outside of the second mounting block. A second connecting block is installed on the guide mold. The second connecting block is adapted to the second mounting hole and can be detachably installed in the second mounting hole. The guide mold is detachably connected to the second slider through the second connecting block, the second mounting hole and the second mounting block.

[0015] According to one embodiment of the present invention, both the first mounting hole and the second mounting hole are T-shaped structures; the first mounting block is a T-shaped structure adapted to the first mounting hole, and the second mounting block is a T-shaped structure adapted to the second mounting hole.

[0016] According to one embodiment of the present invention, a first sprocket coaxially arranged with the rotating shaft is installed on the clamping arm, a third transmission motor is installed on the main arm, a second sprocket is driven and engaged on the output shaft of the third transmission motor, a chain is arranged between the first sprocket and the second sprocket, and the first sprocket is driven and engaged with the second sprocket through the chain.

[0017] Beneficial effects This utility model has at least the following technical effects: 1. By setting a buffer layer, this utility model can avoid crushing and scratching the outer surface of thin-walled pipes during the bending process, thus eliminating the need for subsequent grinding of the outer surface of thin-walled pipes and improving production efficiency.

[0018] 2. By setting anti-slip grooves, this utility model can avoid slippage and friction between thin-walled pipes and clamping molds and wheel molds during the bending process, thereby avoiding mechanical damage to the outer surface of thin-walled pipes other than pressure marks and scratches, and improving production quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 for Figure 1 A magnified view of a portion of point B in the middle; Figure 4 for Figure 1 A magnified view of a portion of point C in the middle; Figure 5 for Figure 1 A schematic diagram of the overall structure from another angle; Figure 6 for Figure 5 A schematic diagram of the overall structure from another angle; Figure 7 This is a schematic diagram of the overall structure of the first mounting block, the first mounting hole, the second mounting block, and the second mounting hole in this utility model. Figure 8 This is a schematic diagram of the overall structure of the first connecting block, clamping mold, and first bent pipe groove in this utility model; Figure 9 This is a schematic diagram of the overall structure of the wheel mold and the second curved pipe groove in this utility model; Figure 10 This is a schematic diagram of the overall structure of the second connecting block, guide mold, and guide groove in this utility model.

[0021] Explanation of reference numerals in the attached figures: 1. Main arm; 2. Clamping arm; 3. Rotating shaft; 4. First slide rail; 5. First slider; 6. First mounting block; 7. First mounting hole; 8. First connecting block; 9. Clamping mold; 10. First bending groove; 11. First lead screw; 12. Wheel mold; 13. Second bending groove; 14. Second slide rail; 15. Second slider; 16. Second mounting block; 17. Second mounting hole; 18. Second connecting block; 19. Guide mold; 20. Guide groove; 21. Second lead screw. Detailed Implementation

[0022] The features and exemplary embodiments of various aspects of this utility model will be described in detail below. To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this utility model and to exemplarily illustrate the principles of this utility model, and are not configured to limit this utility model. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of this utility model.

[0023] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this utility model. In the description of this utility model, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0025] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., without specifically indicating order or sequence, and should not be considered restrictive. Similar terms are used throughout the description to represent similar elements.

[0026] For those skilled in the art, this invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples.

[0027] In the following embodiments, there may be descriptions such as "this device". Those skilled in the art should understand that "this device" refers to a pipe bending device for thin-walled pipes provided by this utility model.

[0028] like Figures 1-10 As shown, this utility model provides a pipe bending device for thin-walled pipes. Figure 1 , Figure 5 and Figure 6 As shown, this device includes at least a main arm 1, a clamping arm 2, and a rotating shaft 3, wherein: like Figure 1 , Figure 5 and Figure 6 As shown, one end of the main arm 1 (i.e. Figure 5 The right end of the main arm 1 is configured to connect to one end of the clamping arm 2 via the pivot 3 (i.e., Figure 1 The left end of the middle clamping arm 2 is hinged (i.e., rotated connection).

[0029] In this embodiment, as Figure 1 As shown, the bottom end of the main arm 1 can be lower than the bottom end of the clamping arm 2, so that the main arm 1 can be installed on the ground without affecting the rotation of the clamping arm 2.

[0030] like Figure 1 As shown, a wheel mold 12, coaxially arranged with the rotating shaft 3, is mounted on the clamping arm 2. Figure 2 and Figure 9 As shown, a second bent tube groove 13 is provided on the outer side wall of the wheel mold 12 along its circumference.

[0031] In this embodiment, as Figure 2 As shown, the wheel mold 12 can be or is approximately cylindrical, while the second bend groove 13 can be a semi-circular groove opened along the circumference of the wheel mold 12 on the outer wall of the wheel mold 12 to fit the outer surface of the thin-walled tube (not shown in the figure).

[0032] In this embodiment, as Figure 1 As shown, the wheel mold 12 can be installed Figure 1 The top of the middle clamping arm 2.

[0033] Specifically, such as Figure 2 As shown, the wheel mold 12 is provided with wheel mold mounting bolts that are coaxial with the rotating shaft 3, and the wheel mold 12 is configured to be connected to the clamping arm 2 through the wheel mold mounting bolts.

[0034] More specifically, a through hole (referred to as the wheel mold center through hole) is provided axially at the center of the wheel mold 12, which is adapted to the threaded rod of the wheel mold mounting bolt. The threaded rod of the wheel mold mounting bolt is configured to slide into the inner wall of the wheel mold center through hole. The clamping arm 2 is provided with a threaded hole (referred to as the wheel mold mounting threaded hole) that can thread into the threaded rod of the wheel mold mounting bolt. When it is necessary to install the wheel mold 12 on the clamping arm 2, the threaded rod of the wheel mold mounting bolt is installed in the wheel mold center through hole and simultaneously threaded into the wheel mold mounting threaded hole, thus completing the installation of the wheel mold 12.

[0035] In this embodiment, as Figure 2 As shown, the bolt head of the wheel mold mounting bolt may have a cross groove or a slotted groove, etc., and no special limitation is made here.

[0036] like Figure 1 , Figure 5 and Figure 6 As shown, a first transmission mechanism and a second transmission mechanism are respectively provided on the clamping arm 2 and the main arm 1. The first transmission mechanism and the second transmission mechanism are respectively connected to the clamping mold 9 and the guide mold 19. Figure 8 As shown, the clamping mold 9 has a first bending groove 10 corresponding to the second bending groove 13; as Figure 10 As shown, the guide mold 19 has a guide groove 20 that corresponds to the first bend groove 10.

[0037] In this embodiment, as Figure 8 and Figure 10 As shown, the clamping mold 9 can be a right-angled trapezoidal structure, and the guide mold 19 can be a cuboid structure; no particular limitation is made here. The first bending groove 10 can be formed in... Figure 8 On the left side wall of the middle clamping mold 9, the guide groove 20 can be formed. Figure 10 On the left side wall of the intermediate guide module 19.

[0038] In this embodiment, the first bend groove 10 and the guide groove 20 can both be semi-circular grooves to fit the outer surface of the thin-walled pipe.

[0039] In this embodiment, the first bending groove 10 and the second bending groove 13 can be used to clamp the two ends of the outer surface of the thin-walled pipe, and can bend the thin-walled pipe (i.e. bend the thin-walled pipe) by the relative rotation of the clamping arm 2 and the main arm 1.

[0040] In this embodiment, both the first bend groove 10 and the second bend groove 13 are provided with a buffer layer (not shown in the figure), and as... Figure 2 and Figure 8 As shown, the buffer layer has several anti-slip grooves.

[0041] In this embodiment, as Figure 2 and Figure 8 As shown, anti-slip grooves are provided on the buffer layer of the first bend groove 10 and the second bend groove 13. The number of anti-slip grooves on the second bend groove 13 is not particularly limited, and they are arranged sequentially along the circumference of the wheel mold 12. The number of anti-slip grooves on the first bend groove 10 is also not particularly limited, and they are arranged sequentially along the length of the first bend groove 10.

[0042] In this embodiment, the thickness of the buffer layer can be 1mm-2mm, preferably 1mm. The buffer layer can be a polyurethane elastomer with a Shore hardness of 80A-90A known in the art, and its thickness can be 1mm. It can be embedded in the first bend groove 10 and the second bend groove 13 by a known adhesive material, without any particular limitation.

[0043] In this embodiment, by setting a buffer layer, it is possible to avoid pressure and scratches on the outer surface of the thin-walled pipe during the bending process, thereby eliminating the need for subsequent grinding of the outer surface of the thin-walled pipe and improving production efficiency.

[0044] In this embodiment, by setting the anti-slip groove, the thin-walled tube can avoid slippage and friction with the clamping mold 9 and the wheel mold 12 during the bending process, thereby avoiding mechanical damage to the outer surface of the thin-walled tube other than pressure marks and scratches, and improving production quality.

[0045] According to one embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the first transmission mechanism includes at least a first transmission motor, a first lead screw 11, and a first slider 5, wherein: The first drive motor is mounted on the clamping arm 2. The first lead screw 11 is driven by the output shaft of the first drive motor. The first slider 5 is limited and slidably engaged with the outer wall of the clamping arm 2. The first lead screw 11 is threadedly engaged with the first slider 5. The clamping mold 9 is detachably mounted on the first slider 5.

[0046] Specifically, such as Figure 1 and Figure 3 As shown, at the top of clamping arm 2 (i.e. Figure 1 A groove (referred to as the first transmission mechanism groove for ease of description) is provided at the top of the middle clamping arm 2. The first transmission motor can be mounted in the first transmission mechanism groove using bolt mounting methods known in the art. Figure 1On the right side wall of the first slider 5. The first lead screw 11 can be driven and engaged with the output shaft of the first drive motor (i.e., the output end of the first drive motor) via a coupling (not shown in the figure) known in the art. The bottom end of the first slider 5 can be mutually limited and slidably engaged with the bottom end of the groove of the first transmission mechanism (i.e., the top outer wall of the clamping arm 2). The first lead screw 11 can pass through the first slider 5 as a whole and be threaded into the first slider 5. The clamping mold 9 is detachably mounted on the top of the first slider 5.

[0047] Furthermore, in order to better achieve the limiting sliding fit between the first slider 5 and the outer wall of the clamping arm 2 (i.e., the bottom end of the groove of the first transmission mechanism), such as... Figure 3 As shown, a first slide rail 4 is installed on the top outer wall of the clamping arm 2. The end of the first slide rail 4 near the wheel mold 12 is correspondingly set to the wheel mold 12, and the first slide rail 4 is parallel to the first lead screw 11. The first slide rail 4 and the first slider 5 are in a limiting sliding engagement, that is, the first slider 5 is configured to be able to make a limiting sliding engagement with the outer wall of the clamping arm 2 through the first slide rail 4.

[0048] In this embodiment, the bottom end of the first slider 5 (i.e. located at...) Figure 3 The bottom end of the slide is provided with a first slide groove that corresponds to and is adapted to the first slide rail 4, and the first slide groove is in a limited sliding fit with the first slide rail 4, thereby realizing the limited sliding fit between the first slide rail 4 and the first slider 5.

[0049] Furthermore, to improve the stability of the first lead screw 11 during rotation, the groove of the first transmission mechanism is located in... Figure 1 A bearing known in the art (not shown in the figure) can be installed at the left end of the bearing. The outer ring of the bearing can be fixedly connected to the clamping arm 2, and the inner ring of the bearing can be coaxially arranged with the first lead screw 11 and fixedly connected to the outer wall of the first lead screw 11.

[0050] In this embodiment, as Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, there can be two first slide rails 4, which are symmetrically arranged at the bottom of the groove of the first transmission mechanism. Since there are two first slide rails 4, and the first slide rails 4 are correspondingly arranged with the first slide grooves, there are also two first slide grooves. The two first slide grooves are respectively arranged with the two first slide rails 4 and are respectively limited and slidably engaged on the two first slide rails 4, which further improves the stability of the first slider 5 during sliding.

[0051] Furthermore, in order to better achieve a detachable connection between the clamping mold 9 and the first slider 5, such as... Figure 3 As shown, a first mounting block 6 is mounted on the first slider 5, and a first mounting hole 7 is provided on the first mounting block 6. The first mounting hole 7 is configured to allow contact with the outside of the first mounting block 6 (i.e., Figure 3 The left outer side of the first mounting block 6 is connected. For example, Figure 3 and Figure 8 As shown, on clamping mold 9 (i.e. Figure 8 The right end of the clamping mold 9 is equipped with a first connecting block 8. The first connecting block 8 is configured to be compatible with the first mounting hole 7 and to be detachably installed in the first mounting hole 7. That is, the clamping mold 9 can be detachably connected to the first slider 5 through the first connecting block 8, the first mounting hole 7 and the first mounting block 6.

[0052] In this embodiment, the first mounting block 6 can be mounted on the top of the first slider 5 by a welding connection method known in the art, without any particular limitation.

[0053] According to one embodiment of the present invention, such as Figure 4 As shown, the second transmission mechanism includes at least a second transmission motor, a second lead screw 21, and a second slider 15, wherein: The second drive motor is mounted on the main arm 1, and the second lead screw 21 is driven by the output shaft of the second drive motor. The second slider 15 is limited and slidably engaged with the outer wall of the main arm 1, and the second lead screw 21 is threadedly engaged with the second slider 15. The guide mold 19 is detachably mounted on the second slider 15.

[0054] Specifically, such as Figure 1 and Figure 4 As shown, at the top of main arm 1 (i.e. Figure 1 A groove (referred to as the second transmission mechanism groove for ease of description) is provided at the top of the main boom 1. The second transmission motor can be mounted in the second transmission mechanism groove using bolt mounting methods known in the art. Figure 6 On the right side wall of the first transmission mechanism. The second lead screw 21 can be driven and engaged with the output shaft of the second transmission motor (i.e., the output end of the second transmission motor) via a coupling (not shown in the figure) known in the art. The bottom end of the second slider 15 can be mutually limited and slidably engaged with the bottom end of the groove of the second transmission mechanism (i.e., the top outer wall of the main arm 1). The second lead screw 21 can pass through the second slider 15 as a whole and be threaded into the second slider 15. The guide mold 19 is detachably mounted on the top of the second slider 15. The height of the groove of the second transmission mechanism can be the same as the height of the groove of the first transmission mechanism.

[0055] In this embodiment, as Figure 1 As shown, both the first transmission mechanism groove and the second transmission mechanism groove can be cuboid structures, and no special limitation is made here.

[0056] Furthermore, in order to better achieve the limiting sliding fit between the second slider 15 and the outer wall of the main arm 1 (i.e., the bottom end of the groove of the second transmission mechanism), such as Figure 4As shown, a second slide rail 14 is installed on the outer wall of the top end of the main arm 1, and the second slide rail 14 is arranged parallel to the second lead screw 21. The second slide rail 14 and the second slider 15 are in a limiting sliding engagement, that is, the second slider 15 is configured to be able to slide and engage with the outer wall of the main arm 1 through the second slide rail 14.

[0057] In this embodiment, the bottom end of the second slider 15 (i.e., located at...) Figure 4 The bottom end of the slide rail 14 is provided with a second slide groove that is corresponding to and adapted to the second slide rail 14. The second slide groove and the second slide rail 14 are in a limited sliding fit, thereby realizing the limited sliding fit between the second slide rail 14 and the second slider 15.

[0058] Furthermore, to improve the stability of the second lead screw 21 during rotation, the groove of the second transmission mechanism is located in... Figure 6 The left end can also be fitted with a bearing known in the art (not shown in the figure), wherein the outer ring of the bearing can be fixedly connected to the main arm 1, and the inner ring of the bearing can be coaxially arranged with the second lead screw 21 and fixedly connected to the outer wall of the first lead screw 11.

[0059] In this embodiment, as Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, there can be two second slide rails 14, which are symmetrically arranged at the bottom of the groove of the second transmission mechanism. Since there are two second slide rails 14, and the second slide rails 14 are correspondingly arranged with the second slide grooves, there are also two second slide grooves. The two second slide grooves are respectively arranged with the two second slide rails 14 and are respectively limited and slidably engaged on the two second slide rails 14, which further improves the stability of the second slider 15 during sliding.

[0060] Furthermore, in order to better achieve a detachable connection between the guide mold 19 and the second slider 15, such as Figure 4 As shown, a second mounting block 16 is mounted on the second slider 15, and a second mounting hole 17 is provided on the second mounting block 16. The second mounting hole 17 is configured to allow contact with the outside of the second mounting block 16 (i.e., Figure 4 The second mounting block 16 is connected to the left outer side. For example, Figure 4 and Figure 10 As shown, on guide mold 19 (i.e. Figure 10 The right end of the guide mold 19 is equipped with a second connecting block 18. The second connecting block 18 is configured to be compatible with the second mounting hole 17 and to be detachably installed in the second mounting hole 17. That is, the guide mold 19 can be detachably connected to the second slider 15 through the second connecting block 18, the second mounting hole 17 and the second mounting block 16.

[0061] In this embodiment, the second mounting block 16 can be mounted on the top of the second slider 15 by a welding connection method known in the art, without any particular limitation.

[0062] In this embodiment, as Figure 3 , Figure 4 , Figure 8 and Figure 10 As shown, both the first mounting hole 7 and the second mounting hole 17 can be T-shaped structures. Specifically, the first connecting block 8 is a T-shaped structure adapted to the first mounting hole 7, and the second connecting block 18 is a T-shaped structure adapted to the second mounting hole 17.

[0063] In this embodiment, the first slider 5, the first mounting block 6, the first connecting block 8, the second slider 15, the second mounting block 16, and the second connecting block 18 can all be quenched 45# steel known in the art, which can provide good structural support for the clamping mold 9 and the guide mold 19.

[0064] Furthermore, the clamping mold 9, the wheel mold 12, and the guide mold 19 can all be nylon 66+30% glass fiber reinforced composite materials known in the art, which can reduce the pressure on the thin-walled tube through their own elastic deformation, and further prevent the occurrence of pressure damage and scratches on the outer surface of the thin-walled tube.

[0065] Furthermore, the clamping mold 9, the wheel mold 12, and the guide mold 19 can all be made of brass materials known in the art, which can generate a small amount of plastic deformation under pressure during the bending process. This not only further prevents the outer surface of the thin-walled pipe from being crushed or scratched, but also better adapts to the curved surface of the thin-walled pipe (i.e., the outer surface of the thin-walled pipe).

[0066] In this embodiment, as Figure 3 , Figure 4 and Figure 7 As shown, threaded holes are provided on the side walls of both the first mounting block 6 and the second mounting block 16 (for ease of description, the threaded hole on the first mounting block 6 is named the first threaded hole, and the threaded hole on the second mounting block 16 is named the second threaded hole). Meanwhile, as... Figure 8 and Figure 10 As shown, the first connecting block 8 and the second connecting block 18 also have a first threaded hole and a second threaded hole respectively on their side walls. Taking the first connecting block 8 and the first mounting block 6 as an example, when the first connecting block 8 is installed in the first mounting hole 7 on the first mounting block 6, a bolt (not shown in the figure) known in the art can be threaded into the first threaded hole, thereby fixing the first connecting block 8 inside the first mounting hole 7. Similarly, the second connecting block 18 can also be fixed in the second mounting hole 17 by a bolt known in the art.

[0067] Furthermore, when using this device to bend thin-walled pipes, if multiple thin-walled pipes of different specifications need to be bent, it is necessary to simultaneously change the appropriate clamping mold 9, wheel mold 12, and guide mold 19, which is time-consuming and labor-intensive, greatly reducing work efficiency. Therefore, as Figures 2-4 , Figures 8-10 As shown, the number of the first bend groove 10, the second bend groove 13, and the guide groove 20 can all be several (two are shown in the figure), and they are arranged sequentially along the thickness direction of the clamping mold 9, the wheel mold 12, and the guide mold 19. The size of the first bend groove 10, the second bend groove 13, and the guide groove 20 in each layer is different.

[0068] When multiple thin-walled pipes of different specifications need to be bent, simply adjust the height of the thin-walled pipes to allow them to enter the corresponding first bending groove 10, second bending groove 13, and guide groove 20. This allows bending of multiple thin-walled pipes of different specifications without the need to replace the matching clamping mold 9, wheel mold 12, and guide mold 19, greatly improving work efficiency.

[0069] According to one embodiment of this utility model, a first sprocket (not shown in the figure) is mounted on the clamping arm 2 and coaxially arranged with the rotating shaft 3, and a third drive motor (not shown in the figure) is mounted on the main arm 1. A second sprocket (not shown in the figure) is driven and engaged on the output shaft (i.e., the output end of the third drive motor). A chain (not shown in the figure) is arranged between the first sprocket and the second sprocket. The first sprocket is driven and engaged with the second sprocket through the chain, that is, the first sprocket meshes with one end of the chain, and the second sprocket meshes with the other end of the chain.

[0070] In this embodiment, the third drive motor can be mounted using bolt connections as known in the art. Figure 1 At the bottom end of the main boom 1, the first sprocket can be mounted using bolt connections known in the art. Figure 1 The bottom end of the middle clamping arm 2, and the second sprocket can be driven by a reducer (not shown in the figure) known in the art to the output shaft of the third drive motor.

[0071] In this embodiment, the first drive motor, the second drive motor, and the third drive motor can all be powered by power supply equipment known in the art (not shown in the figure), and all three drive motors can rotate in both forward and reverse directions. How to control the motors to rotate in both directions is prior art and will not be elaborated upon here.

[0072] It should be understood that, since the first mounting block 6 and the second mounting block 16 have the same structure, and the first mounting hole 7 and the second mounting hole 17 also have the same structure, therefore, through Figure 7This allows us to understand the structure of the first mounting block 6, the first mounting hole 7, the second mounting block 16, and the second mounting hole 17 simultaneously.

[0073] The working process of this device will be briefly described below with reference to the above embodiments: First, place one end of the thin-walled tube to be bent in a tube clamp known in the art (not shown in the figure), and place the other end in a plastic steel clamp known in the art (not shown in the figure).

[0074] Then, the first drive motor and the second drive motor are started, and the first bend groove 10 and the second bend groove 13 clamp the thin-walled tube, while the guide groove 20 contacts the outer surface of the thin-walled tube.

[0075] Next, the third drive motor is started, which allows the clamping arm 2 to rotate around the rotating shaft 3 on the main arm 1. As the tube clamp and plastic steel clamp move, the thin-walled tube can be bent (i.e., bent) through the wheel mold 12 and clamping mold 9.

[0076] During the above process, the guide groove 20 on the guide mold 19 will slide relative to the outer surface of the thin-walled tube, providing support and guidance for the thin-walled tube, thereby ensuring the smooth progress of the tube bending operation.

[0077] It should be understood that the above-described embodiments or examples of this utility model can be combined with each other and have corresponding technical effects.

[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pipe bending device for thin-walled pipes, characterized in that, Includes main arm (1), clamping arm (2), and pivot (3), wherein: One end of the main arm (1) is hinged to one end of the clamping arm (2) via the rotating shaft (3); The clamping arm (2) is equipped with a wheel mold (12) coaxially arranged with the rotating shaft (3), and a second bent tube groove (13) is opened on the outer side wall of the wheel mold (12) along its circumference. The clamping arm (2) and the main arm (1) are respectively provided with a first transmission mechanism and a second transmission mechanism. The first transmission mechanism and the second transmission mechanism are respectively driven and cooperated with the clamping mold (9) and the guide mold (19). The clamping mold (9) is provided with a first bend groove (10) corresponding to the second bend groove (13). The guide mold (19) is provided with a guide groove (20) corresponding to the first bend groove (10). The first bend groove (10) and the second bend groove (13) are used to clamp the thin-walled pipe and bend the thin-walled pipe; Both the first bend groove (10) and the second bend groove (13) are provided with a buffer layer, and the buffer layer is provided with a number of anti-slip grooves.

2. The pipe bending device for thin-walled pipes according to claim 1, characterized in that, The wheel mold (12) is provided with a wheel mold mounting bolt coaxial with the rotating shaft (3), and the wheel mold (12) is connected to the clamping arm (2) through the wheel mold mounting bolt.

3. The pipe bending device for thin-walled pipes according to claim 1, characterized in that, The first transmission mechanism includes a first transmission motor, a first lead screw (11), and a first slider (5), wherein: The first drive motor is mounted on the clamping arm (2), the first lead screw (11) is driven by the output shaft of the first drive motor, the first slider (5) is limited and slidably engaged with the outer wall of the clamping arm (2), the first lead screw (11) is threadedly engaged with the first slider (5), and the clamping mold (9) is detachably mounted on the first slider (5).

4. The pipe bending device for thin-walled pipes according to claim 3, characterized in that, A first slide rail (4) is installed on the outer wall of the clamping arm (2). The end of the first slide rail (4) near the wheel mold (12) is correspondingly set to the wheel mold (12). The first slide rail (4) is parallel to the first lead screw (11). The first slide rail (4) and the first slider (5) are in a limited sliding cooperation. The first slider (5) is in a limited sliding cooperation with the outer wall of the clamping arm (2) through the first slide rail (4).

5. The pipe bending device for thin-walled pipes according to claim 3, characterized in that, The first slider (5) is equipped with a first mounting block (6), and the first mounting block (6) is provided with a first mounting hole (7), which can be connected to the outside of the first mounting block (6); The clamping mold (9) is equipped with a first connecting block (8), which is adapted to the first mounting hole (7) and can be detachably installed in the first mounting hole (7). The clamping mold (9) is detachably connected to the first slider (5) through the first connecting block (8), the first mounting hole (7) and the first mounting block (6).

6. The pipe bending device for thin-walled pipes according to claim 5, characterized in that, The second transmission mechanism includes a second transmission motor, a second lead screw (21), and a second slider (15), wherein: The second drive motor is mounted on the main arm (1), the second lead screw (21) is driven by the output shaft of the second drive motor, the second slider (15) is limited and slidably engaged with the outer wall of the main arm (1), the second lead screw (21) is threadedly engaged with the second slider (15), and the guide mold (19) is detachably mounted on the second slider (15).

7. The pipe bending device for thin-walled pipes according to claim 6, characterized in that, A second slide rail (14) is installed on the outer wall of the main arm (1). The second slide rail (14) is arranged parallel to the second lead screw (21). The second slide rail (14) and the second slider (15) are in a limited sliding cooperation. The second slider (15) is in a limited sliding cooperation with the outer wall of the main arm (1) through the second slide rail (14).

8. The pipe bending device for thin-walled pipes according to claim 6, characterized in that, The second slider (15) is equipped with a second mounting block (16), and the second mounting block (16) is provided with a second mounting hole (17), which can be connected to the outside of the second mounting block (16); The guide mold (19) is equipped with a second connecting block (18), which is adapted to the second mounting hole (17) and can be detachably installed in the second mounting hole (17). The guide mold (19) is detachably connected to the second slider (15) through the second connecting block (18), the second mounting hole (17) and the second mounting block (16).

9. The pipe bending device for thin-walled pipes according to claim 8, characterized in that, Both the first mounting hole (7) and the second mounting hole (17) are T-shaped structures; the first mounting block (6) is a T-shaped structure adapted to the first mounting hole (7), and the second mounting block (16) is a T-shaped structure adapted to the second mounting hole (17).

10. The pipe bending device for thin-walled pipes according to claim 1, characterized in that, The clamping arm (2) is equipped with a first sprocket coaxially with the rotating shaft (3), the main arm (1) is equipped with a third transmission motor, and the output shaft of the third transmission motor is coupled with a second sprocket. A chain is provided between the first sprocket and the second sprocket, and the first sprocket is coupled with the second sprocket through the chain.

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