Flat tube bending device

Abstract

The invention provides a flat tube bending device. The flat tube bending device comprises a positioning handle, the pipe bending disc is arranged on the positioning handle, the peripheral wall of the pipe bending disc forms a pipe bending wall, and the pipe bending wall is in a circular arc shape; the operating handle is rotatably arranged on the peripheral side of the pipe bending disc; a bending part is formed on the side, facing the bent pipe wall, of the operating handle, a bending space is formed between the bending part and the bent pipe wall, and the flat pipe can pass through the bending space; one end of the distance adjusting assembly is rotationally connected with the pipe bending disc, and the other end of the distance adjusting assembly is connected with the operating handle; the operating handle can drive the distance adjusting assembly to rotate relative to the pipe bending disc, so that the bending part rotates around the pipe bending wall, and the flat pipe in the bending space is bent; the distance adjusting assembly is of a telescopic structure. When the length of the distance adjusting assembly is increased, the distance between the bent pipe wall and the bent part can be increased, so that the width of the bent space is increased; when the length of the distance adjusting assembly is shortened, the distance between the pipe bending wall and the bending part can be reduced, so that the width of the bending space is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bending tools, and mainly to a flat tube bender. Background Art

[0002] In a refrigeration device, common heat exchangers include an evaporator and a condenser. The evaporator is a heat-absorbing component in the refrigeration cycle. The refrigerant evaporates in the evaporator, absorbing heat inside the refrigerator, thereby lowering the internal temperature of the refrigeration device. The condenser is a heat-releasing component in the refrigeration cycle. The refrigerant condenses into liquid in the condenser, releasing the heat absorbed from the inside of the refrigerator to the external environment.

[0003] In the heat exchangers of refrigeration devices, more and more microchannel flat tube heat exchangers are gradually replacing traditional round tube heat exchangers. However, the bending machines currently on the market are mainly for the bending processing of round tubes. There are problems such as single processing tube diameter and single bending angle, which cannot be applied to the bending of microchannel flat tubes. Summary of the invention

[0004] The object of the present invention is to provide a refrigeration device to solve the problem that the current bender is not suitable for processing flat tubes of various sizes.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] One aspect of the present application provides a flat tube bender for bending a flat tube, comprising: a positioning handle; a tube bending disc, which is arranged on the positioning handle, and the outer peripheral wall of the tube bending disc forms a tube bending wall, and the tube bending wall is in an arc shape; an operating handle, which is rotatably arranged on the outer peripheral side of the tube bending disc; a bending portion is formed on the side of the operating handle facing the tube bending wall, and a bending space is formed between the bending portion and the tube bending wall, and the bending space can allow the flat tube to pass through; a distance adjustment component, one end of which is rotatably connected to the tube bending disc, and the distance adjustment component The other end of the component is connected to the operating handle; wherein, the operating handle can drive the distance adjusting component to rotate relative to the bending disk, so that the bending portion rotates around the bending wall to bend the flat tube in the bending space; the distance adjusting component is a telescopic structure; when the length of the distance adjusting component is extended, the distance between the bending wall and the bending portion can be increased to increase the width of the bending space; when the length of the distance adjusting component is shortened, the distance between the bending wall and the bending portion can be reduced to reduce the width of the bending space.

[0007] The above technical solution has the following advantages or beneficial effects:

[0008] The present application discloses a flat tube bender, wherein a positioning handle can be used as a fixing and supporting part of the flat tube bender, providing a stable platform for the tube bending operation; by rotatably arranging the operating handle on the outer peripheral side of the tube bending disk, a bending space is formed between the bending portion provided on the operating handle and the tube bending wall, and the bending space is used as the area through which the flat tube passes when being bent. By rotating the operating handle, the bending portion can be rotated around the outer peripheral side of the tube bending wall. In this process, the flat tube located in the bending space is subjected to the pressure of the bending portion and the support of the tube bending wall, and gradually bends and deforms. In the bending process of the flat tube, since the condenser used in the heat exchanger needs to use flat tubes of various sizes for bending, by arranging a distance adjustment component with a telescopic structure, the user can adjust the size of the bending space according to the width of the flat tube and the required bending degree. When the length of the distance adjustment component is extended, the width of the bending space increases, and thus it is suitable for bending of flat tubes of larger sizes; conversely, when the length of the distance adjustment component is shortened, the width of the bending space decreases, and it is suitable for bending of flat tubes of smaller sizes. In this way, by adjusting the length of the distance adjustment component, the user can flexibly control the size of the bending space according to actual needs, thereby achieving efficient and precise bending operations of flat tubes of different specifications and sizes.

[0009] In some embodiments of the present application, a flat tube bender is provided, wherein the distance adjustment assembly includes a first adjusting rod and a second adjusting rod, one end of the first adjusting rod is connected to the tube bending disk, the other end of the first adjusting rod is provided with a slide groove, one end of the second adjusting rod is connected to the operating handle, and the other end of the second adjusting rod can be movably inserted in the slide groove; the second adjusting rod can slide in the slide groove to adjust the length of the distance adjustment assembly.

[0010] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0011] The distance adjustment assembly is composed of a first adjustment rod and a second adjustment rod. The other end of the second adjustment rod is movably inserted into the slide groove of the first adjustment rod so that the second adjustment rod can slide freely in the slide groove, thereby changing the overall length of the distance adjustment assembly.

[0012] In some embodiments of the present application, a flat tube bender is provided, which also includes a locking piece, the second adjusting rod is provided with a locking hole, one end of the locking piece is arranged on the first adjusting rod, and the other end of the locking piece is passed through the locking hole to fix the first adjusting rod and the second adjusting rod.

[0013] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0014] In this solution, a locking member is provided, and the locking member can fix the first adjusting rod and the second adjusting rod together, so that the length of the distance adjustment assembly is fixed at a certain required value.

[0015] In some embodiments of the present application, a flat tube bender is provided, wherein a plurality of locking holes are provided, and the plurality of locking holes are sequentially and spaced apart from each other on the second adjusting rod along an extension direction of the slide groove.

[0016] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0017] A plurality of locking holes are arranged on the second adjusting rod. The locking pieces located in different locking holes can correspondingly form different distances between the first adjusting rod and the second adjusting rod, so that the operator can conveniently select appropriate fixing positions of the first adjusting rod and the second adjusting rod according to the needs, thereby simplifying the steps of operating flat tubes of various sizes and improving work efficiency.

[0018] In some embodiments of the present application, a flat tube bender is provided, wherein the bent tube wall is respectively formed with a first end and a second end along both circumferential ends; the flat tube bender also includes a limiting portion, which is connected to the positioning handle, and the limiting portion is located on the circumferential outer side of the first end of the bent tube wall, and the limiting portion is spaced apart from the first end to form an entrance; when the bending portion is rotated to the circumferential outer side of the first end, the entrance is connected to the bending space, and the flat tube can extend into the bending space through the entrance.

[0019] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0020] Since the limiting part can be against the outer wall of the flat tube, the limiting part can provide a stable support point for the flat tube during the bending process, limit the movement of the flat tube in the horizontal or vertical direction, and thus prevent the occurrence of deviation. The setting of the limiting part can prevent the flat tube from sometimes slightly deviating, and thus can effectively improve the processing accuracy of the flat tube bending.

[0021] In some embodiments of the present application, a flat tube bender is provided, wherein an introduction surface is provided on the tube bending disk, one end of the introduction surface is connected to the first end of the tube bending wall, an entrance is formed between the limiting portion and the introduction surface, and the width of the entrance gradually decreases in the direction approaching the tube bending wall.

[0022] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0023] As the opening gradually becomes smaller, the flat tube can be gradually guided to the correct position when passing through the entrance, which is conducive to reducing bending failure or damage caused by misoperation. Moreover, it can enable the flat tube to maintain an accurate posture and position when entering the bending space, thereby improving the accuracy and quality of the flat tube bending.

[0024] In some embodiments of the present application, a flat tube bender is provided, wherein the tube bending disk is movably disposed on the positioning handle; when the tube bending disk moves along the positioning handle, the distance between the limiting portion and the first end can be adjusted to adjust the width of the entrance.

[0025] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0026] The operator can move the tube bending disc to the position of the positioning handle so that the inlet can adapt to flat tubes of different sizes, making it convenient for the operator to complete the bending operations of flat tubes of various sizes on the same tool, thereby simplifying the operation process.

[0027] In some embodiments of the present application, a flat tube bender is provided, the positioning handle is provided with an adjustment hole, and the adjustment hole is a long strip hole; the tube bending disk is protruded with a connecting column, and the connecting column extends along the axial direction of the tube bending disk, one end of the connecting column is connected to the tube bending disk, and the other end of the connecting column is movably inserted into the limiting hole, and the connecting column can move along the length direction of the adjustment hole; when the connecting column moves along the length direction of the limiting hole, the distance between the limiting portion and the introduction surface can be adjusted.

[0028] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0029] The pipe bending disc can be inserted into the adjustment hole through a connecting column, and the connecting column is movably arranged in the adjustment hole. The connecting column can move in the length direction of the adjustment hole, thereby driving the pipe bending disc connected thereto to move together, thereby adjusting the width of the entrance.

[0030] In some embodiments of the present application, a flat tube bender is provided, which includes a fixing piece, which is sleeved on one end of the connecting column extending out of the limiting hole, and the fixing piece connects the connecting column to the limiting hole.

[0031] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0032] By setting a fixing piece, this solution can make the position of the connecting column in the limiting hole more stable, reduce loosening or displacement caused by external force or frequent use, and help ensure the stability and reliability of the pipe bender during use.

[0033] In some embodiments of the present application, a flat tube bender is provided, wherein a first groove is provided at the first end of the bent tube wall, a second groove is provided at the second end of the bent tube wall, the limiting portion is spaced apart from the first groove to form the entrance, and the first groove and the second groove are staggered along the axial direction of the bent tube groove.

[0034] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0035] This solution not only realizes the bending of the flat tube as a whole by staggering the first clamping groove and the second clamping groove, but also makes the two ends of the bending part of the flat tube offset, thereby realizing the bending of the flat tube in three dimensions. Moreover, during the bending process, the flat tube can gradually and stably change direction, thereby avoiding material breakage or uneven deformation caused by sudden large-angle turns.

[0036] In some embodiments of the present application, a flat tube bender is provided, which also includes a first connecting member, which is arranged between the tube bending disk and the distance adjusting assembly, one end of the first connecting member is detachably fixedly connected to one end of the distance adjusting assembly, and the other end of the first connecting member is detachably rotatably connected to the tube bending disk.

[0037] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0038] Both ends of the first connecting member are detachably connected to the distance adjusting component and the pipe bending disc, so that the first connecting member, the distance adjusting component and the pipe bending disc can be disassembled separately, making it convenient for users to replace parts such as the pipe bending disc and the distance adjusting component to adapt to the bending of flat tubes of different sizes.

[0039] In some embodiments of the present application, a flat tube bender is provided, which also includes a second connecting member, which is arranged between the operating handle and the other end of the distance adjusting assembly, one end of the second connecting member is detachably fixedly connected to the operating handle, and the other end of the second connecting member is detachably fixedly connected to the other end of the distance adjusting assembly.

[0040] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0041] In this solution, the two ends of the second connecting member are respectively connected to the operating handle and the other end of the distance adjusting assembly in a detachable manner. The operator can remove the operating handle from the distance adjusting assembly as needed, replace the operating handle with a bending portion of a different size, or replace the distance adjusting assembly with different lengths to meet different bending requirements.

[0042] In some embodiments of the present application, a flat tube bender is provided, wherein the bending tube wall is recessed to form a bending tube groove, the bending tube groove is extended along the circumference of the bending tube disk, and the bending space is formed between the bottom surface of the bending tube groove and the bending portion.

[0043] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0044] In this solution, a bending groove is formed by recessing the wall of the bending tube. The groove wall of the bending groove can play a certain supporting and guiding role on the flat tube, thereby improving the bending accuracy of the flat tube.

[0045] In some embodiments of the present application, a flat tube bender is provided, wherein a tube pressing groove is provided on the surface of the bending portion, and the bending space is formed between the bottom surfaces of the tube bending groove and the bottom surfaces of the tube pressing groove.

[0046] Another technical solution in the above technical solution has the following advantages or beneficial effects:

[0047] In this solution, the two relatively flat surfaces of the flat tube can be respectively against the bottom surface of the bending groove and the bottom surface of the pressing groove, thereby providing stable support for the flat tube, so that the flat tube can maintain a stable state during the bending process, reducing processing problems caused by shaking or jumping. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a three-dimensional schematic diagram of a flat tube bender according to an embodiment of the present application;

[0049] Figure 2 for Figure 1 Schematic diagram of the bending tube disc;

[0050] Figure 3 for Figure 2 Schematic diagram from another perspective;

[0051] Figure 4 for Figure 1 A schematic diagram of the operating handle;

[0052] Figure 5 for Figure 1 A top view of

[0053] Figure 6 for Figure 1 a cross section of;

[0054] Figure 7 for Figure 6 A schematic diagram of another state of

[0055] Figure 8 for Figure 1 A schematic diagram of the connection between the positioning handle and the pipe bending disc;

[0056] Fig. 9 for Figure 8 Rear view of

[0057] Fig.10 for Figure 8 Side view of

[0058] Fig.11 for Figure 1A schematic diagram of a pipe bending disc according to another embodiment of the present invention;

[0059] The corresponding relationship between the reference numerals and the component names is as follows:

[0060] 1 positioning handle, 101 adjustment holes;

[0061] 2 bending tube plate, 201 bending tube wall, 202 bending tube groove, 203 introduction surface, 204 entrance, 205 first clamping groove, 206 second clamping groove, 21 first end, 22 second end, 23 connecting column;

[0062] 3 operating handle, 31 bending portion, 300 bending space, 301 tube pressing wall surface, 302 tube pressing groove;

[0063] 4 distance adjustment assembly, 401 lock hole, 41 first adjustment rod, 42 second adjustment rod, 43 locking member;

[0064] 51 a first connecting member, 52 a second connecting member;

[0065] 6 limiting part, 601 arc surface;

[0066] 7 fixings. DETAILED DESCRIPTION

[0067] The present invention provides a refrigeration device. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0068] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present invention.

[0069] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, an electrical connection, or mutual communication; 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.

[0070] In a refrigeration device, common heat exchangers include an evaporator and a condenser. The evaporator is a heat-absorbing component in the refrigeration cycle. The refrigerant evaporates in the evaporator, absorbing heat inside the refrigerator, thereby lowering the internal temperature of the refrigeration device. The condenser is a heat-releasing component in the refrigeration cycle. The refrigerant condenses into liquid in the condenser, releasing the heat absorbed from the inside of the refrigerator to the external environment.

[0071] It should be noted that the refrigeration device may be a refrigeration cabinet such as a freezer or a refrigerator.

[0072] In the heat exchangers of refrigeration devices, more and more microchannel flat tube heat exchangers are gradually replacing traditional round tube heat exchangers. However, the bending machines currently on the market are mainly for the bending processing of round tubes. There are problems such as single processing tube diameter and single bending angle, which cannot be applied to the bending of microchannel flat tubes.

[0073] Figure 1 It is a three-dimensional schematic diagram of a flat tube bender according to an embodiment of the present application.

[0074] See also Figure 1 As shown, the present invention provides a flat tube bender, which can be used to bend flat tubes.

[0075] In some embodiments, the flat tube bender may include a positioning handle 1. The positioning handle 1 may serve as a fixing and supporting portion of the flat tube bender, so that the entire flat tube bender can be stably maintained at a desired position during the process of bending the tube.

[0076] In some embodiments, the positioning handle 1 may be provided with a gripping structure or an anti-slip texture, which makes it easier for the operator to hold it.

[0077] In some embodiments, the positioning handle 1 can be extended in the up-down direction. The lower end of the positioning handle 1 can be fixed on the work surface.

[0078] Figure 2 for Figure 1 Schematic diagram of the bending tube disc; Figure 3 for Figure 2 Schematic diagram from another perspective.

[0079] like Figure 1 and Figure 2 As shown, in some embodiments, the flat tube bender may include a tube bending disk 2. The tube bending disk 2 may provide a stable bending platform for bending the flat tube.

[0080] like Figure 2As shown, in some embodiments, the tube bending disc 2 can be arranged on the positioning handle 1. The outer peripheral wall of the tube bending disc 2 can form a tube bending wall 201. An accurate bending guide path is provided for the flat tube. By forming the tube bending wall 201 on the outer peripheral wall of the tube bending disc 2, the flat tube can be gradually bent along the contour of the tube bending wall 201 under the action of external force during the bending process, which is conducive to improving the consistency and accuracy of the bending angle and shape.

[0081] like Figure 3 As shown, in some embodiments, the curved pipe wall 201 may be in an arc shape. It should be noted that the arc shape of the curved pipe wall 201 surface may be a partial arc surface of a cylinder.

[0082] In some embodiments, the tube bending disc 2 can be detachably arranged on the positioning handle 1. Since the tube bending wall 201 is easily worn or damaged during the bending process of the flat tube, or the operator needs to replace the tube bending disc 2 to adapt to flat tubes of different sizes during the bending process of flat tubes of different sizes. By setting the tube bending disc 2 detachable, the tube bending disc 2 can be removed from the positioning handle 1 and replaced with a new tube bending disc 2. In this way, the flat tube bender can meet the diverse requirements of users for different flat tube processing needs and is suitable for bending flat tubes of different sizes.

[0083] Figure 4 for Figure 1 A schematic diagram of the operating handle; Figure 5 for Figure 1 Top view of the .

[0084] like Figure 4 and Figure 5 As shown, in some embodiments, the flat tube bender may include an operating handle 3. The operating handle 3 is rotatably disposed on the outer circumference of the tube bending disk 2. By arranging the operating handle 3 on the outer circumference of the tube bending disk 2 and making it rotatable, the user can directly rotate the operating handle 3 so that it can rotate along the outer circumference of the tube bending disk 2, so that the flat tube is bent according to a predetermined bending angle and shape.

[0085] like Figure 5 As shown, in some embodiments, a bending portion 31 may be formed on one side of the operating handle 3 facing the curved tube wall 201. A bending space 300 may be formed between the bending portion 31 and the curved tube wall 201, and the bending space 300 can allow the flat tube to pass through.

[0086] Specifically, by designing a specific part of the operating handle 3 as a bending portion 31, a bending space 300 is formed between the bending portion 31 and the curved tube wall 201. By forming the bending portion 31 on the operating handle 3, the bending space 300 formed between the bending portion 31 and the curved tube wall 201 is the position for the flat tube to bend. When the operating handle 3 is rotated, the bending portion 31 will rotate around the curved tube wall 201, thereby forcing the flat tube located in the bending space 300 to bend. In this process, the bending space 300 can guide and support the flat tube, which is conducive to the uniformity and consistency of the bending.

[0087] In some embodiments, the size and shape of the bending space 300 can be adapted to the flat tube, so that the flat tube passing through the bending space 300 can be bent as expected under the action of the bending portion 31 .

[0088] like Figure 4 As shown, in some embodiments, the bending portion 31 can be integrally formed with the operating handle 3 .

[0089] In some embodiments, the operating handle 3 is detachably rotatably disposed on the outer peripheral side of the tube bending disk 2. Since the bending portion 31 is easily damaged by wear and tear during the bending process of flat tubes of different sizes, or the operator needs to replace the bending portion 31 to adapt to flat tubes of different sizes during the bending process of flat tubes of different sizes. By designing the operating handle 3 to be detachable, the operator can remove the bending portion 31 from the flat tube bender and replace it with a new bending portion 31. In this way, the flat tube bender can meet the diverse requirements of users for different flat tube processing needs and is suitable for bending flat tubes of different sizes.

[0090] like Figure 2 and Figure 5 As shown, in some embodiments, the bend wall 201 may be recessed to form a bend groove 202. The bend groove 202 may be arranged to extend along the circumference of the bend plate 2, and a bending space 300 is formed between the groove bottom surface of the bend groove 202 and the bending portion 31. Since the flat tube may be offset and deformed during the bending process of the flat tube in the bending space 300, by recessing the bend groove 202 on the bend wall 201, the groove wall of the bend groove 202 can play a certain supporting and guiding role for the flat tube, thereby improving the bending accuracy of the flat tube.

[0091] like Figure 2 As shown, in some embodiments, the pipe bending groove 202 may be flat. The flat shape may match the shape of the flat tube, so that one of the flat surfaces of the flat tube may be matched with the pipe bending groove 202.

[0092] like Figure 4As shown, in some embodiments, a tube pressing wall surface 301 may be provided on one side of the bending portion 31 facing the bending groove 202 , so that the other flat surface of the flat tube can be matched with the tube pressing wall surface of the bending portion 31 .

[0093] like Figure 5 As shown, in some embodiments, the surface of the bending portion 31 is provided with a tube pressing groove 302, and a bending space 300 is formed between the groove bottom surface of the bending groove 202 and the groove bottom surface of the tube pressing groove 302. The surface of the bending portion 31 may refer to a tube pressing wall surface 301, and the tube pressing wall surface 301 may be concave to form the tube pressing groove 302.

[0094] Specifically, the tube pressing wall surface provided on the bending portion 31 can be recessed to form a tube pressing groove 302. A bending space 300 is formed between the groove bottom surface of the bending groove 202 and the groove bottom surface of the tube pressing groove 302, so that the two relatively arranged flat surfaces of the flat tube can respectively abut against the groove bottom surface of the bending groove 202 and the groove bottom surface of the tube pressing groove 302, thereby providing a stable support for the flat tube, so that the flat tube can maintain a stable state during the bending process, reducing processing problems caused by shaking or jumping.

[0095] Figure 6 for Figure 1 A cross-sectional view of Figure 7 for Figure 6 Schematic diagram of another state.

[0096] like Figure 5 and Figure 7 As shown, in some embodiments, the flat tube bender may include a distance adjustment component 4. One end of the distance adjustment component 4 may be rotatably connected to the tube bending disc 2, and the other end of the distance adjustment component 4 may be connected to the operating handle 3. In order to adapt to flat tubes of various diameters, by providing the distance adjustment component 4 between the tube bending disc 2 and the operating handle 3, the operator may adjust the distance between the tube bending disc 2 and the operating handle 3 according to processing requirements, thereby adapting to the bending of flat tubes of different sizes.

[0097] like Figure 5 As shown, in some embodiments, a rotating connection structure such as a pin shaft, a bearing, etc. can be provided between one end of the distance adjusting component 4 and the pipe bending disk 2, so that the operating handle 3 connected to the other end of the distance adjusting component 4 can drive the bending portion 31 to move around the outer peripheral side of the pipe bending disk 2 under the drive of an external force.

[0098] In some embodiments, the distance-adjusting component 4 may be a telescopic structure. The telescopic structure may lengthen or shorten the length of the distance-adjusting component 4, thereby changing the distance between the two ends of the distance-adjusting component 4, and changing the distance between the bending tube disc 2 and the bending portion 31 connected at the two ends of the distance-adjusting component 4 accordingly, thereby being able to be adjusted according to the processing requirements of flat tubes of different sizes.

[0099] When the length of the distance adjusting component 4 is extended, the distance between the curved tube wall 201 and the bending portion 31 can be increased to increase the width of the bending space 300; when the length of the distance adjusting component 4 is shortened, the distance between the curved tube wall 201 and the bending portion 31 can be reduced to reduce the width of the bending space 300.

[0100] like Figure 7 As shown, for ease of understanding, the width of the bending space 300 is represented by the letter H1. The width of the bending space 300 may refer to the minimum distance between the groove bottom surface of the bending groove 202 and the groove bottom surface of the pressing groove 302. Since the two flat surfaces of the flat tubes arranged opposite to each other may respectively abut against the groove bottom surface of the bending groove 202 and the groove bottom surface of the pressing groove 302, the width of the bending space 300 is adapted to the width of the flat tubes.

[0101] In this way, when the length of the distance adjusting component 4 is extended, the distance adjusting component 4 drives the operating handle 3 and the bending portion 31 formed on the operating handle 3 to move toward the circumferential outer side of the tube bending disk 2, thereby increasing the width of the bending space 300, which is suitable for bending wider flat tubes.

[0102] On the contrary, when the length of the distance adjustment component 4 is shortened, the distance adjustment component 4 drives the operating handle 3 and the bending portion 31 formed on the operating handle 3 to move toward the side where the pipe bending disk 2 is located, thereby reducing the distance between the pipe bending wall 201 and the bending portion 31, that is, reducing the width of the bending space 300, which is suitable for the scene of bending narrow flat tubes. Through the telescopic structure setting of the distance adjustment component 4, the user does not need to replace the entire pipe bending disk 2 or the operating handle 3, and can adjust the width of the bending space 300 by adjusting the length of the distance adjustment component 4, which simplifies the process of bending operations of flat tubes of various sizes and improves work efficiency.

[0103] like Figure 5 As shown, in some embodiments, the distance adjustment assembly 4 may include a first adjustment rod 41 and a second adjustment rod 42. One end of the first adjustment rod 41 may be connected to the pipe bending plate 2, and the other end of the first adjustment rod 41 is provided with a slide groove, one end of the second adjustment rod 42 is connected to the operating handle 3, and the other end of the second adjustment rod 42 is movably inserted in the slide groove. The second adjustment rod 42 can slide in the slide groove to adjust the length of the distance adjustment assembly 4.

[0104] Specifically, one end of the first adjusting rod 41 is connected to the pipe bending plate 2, and can be used as the fixed end of the distance adjustment component 4. A slide groove (not shown in the figure) is provided at the other end of the first adjusting rod 41, and the slide groove can allow the second adjusting rod 42 to be movably inserted into the interior of the first adjusting rod 41. One end of the second adjusting rod 42 is connected to the operating handle 3, and the other end of the second adjusting rod 42 can be movably inserted into the slide groove of the first adjusting rod 41, so that the second adjusting rod 42 can slide freely in the slide groove, thereby changing the overall length of the distance adjustment component 4.

[0105] like Figure 5 As shown, in some embodiments, the flat tube bender may include a locking member 43. The operator may use the locking member 43 to fix the first adjustment rod 41 and the second adjustment rod 42 together to fix the length of the distance adjustment assembly 4 at a desired value.

[0106] like Figure 5 As shown, in some embodiments, the second adjustment rod 42 may be provided with a locking hole 401. One end of the locking member 43 may be disposed on the first adjustment rod 41, and the other end of the locking member 43 may be inserted into the locking hole 401 to fix the first adjustment rod 41 and the second adjustment rod 42.

[0107] The first adjustment rod 41 may be provided with a through hole (not shown in the figure), the locking member 43 is passed through the through hole, and the other end of the locking member 43 may extend into the locking hole 401. After the user adjusts the second adjustment rod 42 to a desired position by sliding it along the slide groove, the locking member 43 is passed through the through hole of the first adjustment rod 41 and the locking hole 401 of the second adjustment rod 42, and then the locking member 43 may be locked on the second adjustment rod 42 by rotating, tightening, etc., so that the first adjustment rod 41 and the second adjustment rod 42 will not slide relative to each other.

[0108] In some embodiments, the locking member 43 may be a spring pin, a bolt, a nut or other similar fasteners, and the size and shape of the locking member 43 must match the locking hole 401 on the second adjusting rod 42 .

[0109] like Figure 5 As shown, in some embodiments, a plurality of locking holes 401 may be provided. The plurality of locking holes 401 may be sequentially and spaced apart on the second adjusting rod 42 along the extending direction of the slide slot, so that the user can select a suitable fixing position as required. In this way, the operator only needs to simply select a suitable locking hole 401 and insert the locking member 43 to complete the fixing of the distance adjustment assembly 4, which is conducive to simplifying the steps of operating flat tubes of various sizes and improving work efficiency.

[0110] In some embodiments, the locking holes 401 may be arranged at equal intervals or unequal intervals along the length direction of the second adjustment rod 42 .

[0111] In some embodiments, the locking hole 401 may be in the shape of an elongated strip. The elongated locking hole 401 allows the locking member 43 to be fine-tuned within a certain range, rather than just being positioned at a certain point, so that the operator can make more precise adjustments to the distance adjustment component 4 according to actual processing requirements to adapt to flat tubes of different sizes and specifications.

[0112] In some other embodiments, the telescopic structure may adopt a structure such as a gear or connecting rod transmission connection, so as to change the distance from the two ends of the component by different meshing positions of the connecting rod and the gear.

[0113] like Figure 5 As shown, in some embodiments, the flat tube bender may include a first connecting member 51. The first connecting member 51 may be disposed between the tube bending disk 2 and the distance adjusting assembly 4.

[0114] In some embodiments, one end of the first connector 51 can be detachably fixedly connected to one end of the distance adjustment component 4, and the other end of the first connector 51 can be detachably rotatably connected to the pipe bending disk 2. Among them, both ends of the first connector 51 are detachably connected to the distance adjustment component 4 and the pipe bending disk 2, so that the first connector 51, the distance adjustment component 4 and the pipe bending disk 2 can be removed separately, which is convenient for users to replace parts such as the pipe bending disk 2 and the distance adjustment component 4 to adapt to the bending of flat tubes of different sizes. Moreover, the other end of the first connector 51 can be detachably rotatably connected to the pipe bending disk 2, so that when the operating handle 3 rotates, it can drive the bending portion 31 to rotate around the connection between the first connector 51 and the pipe bending disk 2.

[0115] It should be noted that the rotational connection between the other end of the first connecting member 51 and the bending tube disk 2 is the center of the arc-shaped bending tube wall 201. When the operating handle 3 is rotating, the bending portion 31 rotates around the outer side of the bending tube disk 2, and the width of the bending space 300 formed between the bending portion 31 and the bending tube wall 201 remains unchanged.

[0116] In some embodiments, one end of the first connecting member 51 can be detachably rotatably connected to one end of the distance adjusting assembly 4, and the other end of the first connecting member 51 can be detachably fixedly connected to the pipe bending disk 2. In this way, when the operating handle is rotated, the bending portion 31 on the operating handle and the distance adjusting assembly 4 can be driven to rotate around the connection between the first connecting member 51 and the distance adjusting assembly 4.

[0117] like Figure 5 As shown, in some embodiments, the flat tube bender may include a second connecting member 52. The second connecting member 52 may be disposed between the operating handle 3 and the other end of the distance adjustment assembly 4.

[0118] In some embodiments, one end of the second connecting member 52 can be detachably fixedly connected to the operating handle 3, and the other end of the second connecting member 52 can be detachably fixedly connected to the other end of the pitch adjustment component 4. By respectively realizing detachable fixed connection between the two ends of the second connecting member 52 and the other end of the pitch adjustment component 4, the operator can remove the operating handle 3 from the pitch adjustment component 4 as needed, replace the operating handle 3 with a bending portion 31 of different sizes, or replace the pitch adjustment component 4 of different lengths to meet different bending requirements.

[0119] In some embodiments, one end of the second connecting member 52 may be fixedly connected to the operating handle 3 , and one end of the second connecting member 52 may be detachably fixedly connected to the operating handle 3 .

[0120] like Figure 2 and Figure 3 As shown, in some embodiments, the curved tube wall 201 is respectively formed with a first end 21 and a second end 22 along both ends of the circumferential direction. The first end 21 and the second end 22 are respectively arranged at the head end and the tail end of the curved tube wall 201. The first end 21 is arranged to be raised relative to the groove bottom wall of the curved tube groove 202, and the second end 22 is arranged to be raised relative to the groove bottom wall of the curved tube groove 202, so that the edge of the flat tube can be limited in the curved tube groove 202 by the first end 21 and the second end 22.

[0121] Figure 8 for Figure 1 Schematic diagram of the connection between the positioning handle and the bending plate.

[0122] like Figure 1 and Figure 8 As shown, in some embodiments, the flat tube bender may include a limiting portion 6. The limiting portion 6 may be connected to the positioning handle 1, and the limiting portion 6 may be located at the circumferential outer side of the first end 21 of the curved tube wall 201, and the limiting portion 6 and the first end 21 may be spaced apart to form an inlet 204; when the bending portion 31 rotates to the circumferential outer side of the first end 21, the inlet 204 is connected to the bending space 300, and the flat tube can extend into the bending space 300 through the inlet 204.

[0123] Specifically, if Figure 7 As shown, the limiting portion 6 is arranged on the circumferential outer side of the first end 21 of the curved tube wall 201, so that the limiting portion 6 and the first end 21 are spaced apart to form an inlet 204, and the inlet 204 can be used for the flat tube to enter the bending space 300. When the bending portion 31 rotates counterclockwise to the circumferential outer side of the first end 21, the bending portion 31 and the portion of the curved tube wall 201 close to the first end 21 form a bending space 300, and the operator can extend the flat tube into the bending space 300 through the inlet 204, and then rotate the operating handle 3 so that the bending portion 31 can rotate along the outer circumferential direction of the curved tube wall 201, thereby bending the flat tube.

[0124] It should be noted that during the flat tube bending process, the flat tube needs to be kept in a relatively stable position to ensure that the bending angle and shape meet expectations. However, due to factors such as the elasticity of the material itself, changes in friction or improper operation, the flat tube may sometimes deviate slightly; and when the bending portion 31 applies force to the flat tube, if the friction between the flat tube and the support surface is insufficient, or the support surface itself is not stable enough, the flat tube may slip out of the tube bender. In the design of the flat tube bender of the present application, when the bending portion 31 applies force to the flat tube in the direction toward the axis of the bending disk 2, the limiting portion 6 can be against the outer wall of the flat tube, so that the limiting portion 6 can provide a stable support point for the flat tube during the bending process, limit the movement of the flat tube in the horizontal or vertical direction, and thus prevent the occurrence of deviation. The setting of the limiting portion 6 can prevent the flat tube from sometimes deviating slightly, thereby effectively improving the processing accuracy of the flat tube bending.

[0125] like Figure 7 As shown, in some embodiments, the side of the limiting portion 6 facing the inlet 204 is provided with an arc surface 601, and the arc surface 601 is used to abut against the outer surface of the flat tube. By providing the side of the limiting portion 6 facing the inlet 204 with an arc surface 601, when the flat tube enters the bending space 300, the outer surface of the flat tube located at the inlet 204 can form a smooth contact with the limiting portion 6, reducing friction and wear, while providing stable support. On the other hand, the outer surface of the flat tube will abut against the arc surface 601 of the limiting portion 6, which not only helps to prevent the flat tube from deflecting or sliding during the bending process, but also can keep the flat tube in the correct position and posture before bending. The design of the arc surface 601 makes the abutment between the two more uniform and stable, reducing damage or deformation caused by local stress concentration.

[0126] In some embodiments, the limiting portion 6 can be integrally formed with the positioning handle 1 .

[0127] like Figure 7 and Figure 8 As shown, in some embodiments, the pipe bending disk 2 may be provided with an introduction surface 203. One end of the introduction surface 203 may be connected to the first end 21 of the pipe bending wall 201, and an inlet 204 may be formed between the limiting portion 6 and the introduction surface 203, and the width of the inlet 204 gradually decreases from the direction approaching the pipe bending wall 201.

[0128] Specifically, by setting the introduction surface 203 on the bending tube disc 2, the introduction surface 203 can guide the flat tube to smoothly enter the bending space 300. Among them, the width of the entrance 204 gradually decreases from the direction close to the bending tube wall 201, which can refer to the process as the flat tube continues to move toward the bending tube disc 2 and extends into the bending space 300. In this way, as the opening gradually becomes smaller, the flat tube can be gradually guided to the correct position when passing through the entrance 204. If the size of the flat tube is too large or improperly placed, it will be blocked at the entrance 204 and cannot continue to move forward, thereby avoiding bending failure or damage caused by misoperation. On the other hand, it is also beneficial for the flat tube to maintain an accurate posture and position when entering the bending space 300, thereby improving the accuracy and quality of the flat tube bending.

[0129] It should be noted that if Figure 6 and Figure 7 As shown, the operating handle 3 can be rotated around the center of the tube bending disk 2 to the circumferential outer side of the first end of the tube bending disk 2. Figure 7 The dotted circle in the figure can represent the motion trajectory of the operating handle 3. The operating handle 3 can be rotated until the tube pressing wall 301 is parallel to the introduction surface 203. At this time, the inlet 204 can be directly connected with the bending space 300, so that the flat tube can be extended into the bending space 300 through the inlet 204.

[0130] In some other usage scenarios, the operating handle 3 can be rotated around the center of the bending tube disk 2 to the circumferential outside of the first end of the bending tube disk 2, and the tube pressing wall 301 of the operating handle 3 can be set non-parallel to the introduction surface 203, and only space needs to be reserved for the flat tube to extend into the bending space 300.

[0131] like Figure 8 As shown, in some embodiments, the introduction surface 203 can be an inclined surface. The inclined surface can be inclined along the inlet 204 toward the outer side of the elbow groove 202. By configuring the introduction surface 203 as an inclined surface, the inclined setting of the inclined surface can make the width of the inlet 204 gradually decrease from the direction close to the elbow wall 201.

[0132] It should be noted that for ease of understanding, Figure 8 In FIG. 1 , H2 represents the width of the entrance 204 .

[0133] Fig. 9 for Figure 8 Rear view of Fig.10 for Figure 8 Side view of.

[0134] like Fig. 9 and Fig.10As shown, in some embodiments, the tube bending disc 2 is movably disposed on the positioning handle 1. When the tube bending disc 2 moves along the positioning handle 1, the distance between the limiting portion 6 and the first end 21 can be adjusted to adjust the width of the inlet 204.

[0135] In this embodiment, by movably setting the tube bending disc 2 on the positioning handle 1, when the operator moves the tube bending disc 2 along the positioning handle 1, since the limiting portion 6 is fixed on the positioning handle 1, the distance between the limiting portion 6 and the first end 21 of the tube bending wall 201 will change, thereby adjusting the width of the inlet 204. In this way, the operator can move the tube bending disc 2 on the positioning handle 1 so that the inlet 204 can adapt to flat tubes of different sizes, and the operator can complete the bending operation of flat tubes of various sizes on the same tool, thereby simplifying the operation process.

[0136] like Fig. 9 As shown, in some embodiments, the positioning handle 1 may be provided with an adjustment hole 101. The pipe bending disk 2 may be provided with a connecting column 23. The connecting column 23 may extend along the axial direction of the pipe bending disk 2, one end of the connecting column 23 may be connected to the pipe bending disk 2, and the other end of the connecting column 23 may be movably inserted into the limiting hole, and the connecting column 23 may be movable along the length direction of the adjustment hole 101.

[0137] When the connecting column 23 moves along the length direction of the limiting hole, the distance between the limiting portion 6 and the introduction surface 203 can be adjusted.

[0138] Specifically, by providing the adjustment hole 101 on the positioning handle 1, the adjustment hole 101 provides a stable sliding track for the connecting column 23. The pipe bending disc 2 is inserted into the adjustment hole 101 through the connecting column 23, and the connecting column 23 is movably arranged in the adjustment hole 101. The connecting column 23 can move in the length direction of the adjustment hole 101, thereby driving the pipe bending disc 2 connected thereto to move together, thereby adjusting the width of the inlet 204.

[0139] like Fig. 9 As shown, in some embodiments, the adjustment hole 101 may be an elongated hole, wherein the length direction of the elongated hole may be extended along the width of the inlet 204, so that when the connecting column 23 moves along the length direction of the elongated hole, the distance between the limiting portion 6 and the introduction surface 203 can be adjusted.

[0140] In some embodiments, the side wall of the adjustment hole 101 may be provided with scales or marks, which is helpful for the operator to more accurately control the sliding distance of the pipe bending disk 2, thereby achieving accurate adjustment of the width of the inlet 204.

[0141] like Fig. 9 and Fig.10As shown, in some embodiments, the flat tube bender may include a fixing member 7. The fixing member 7 may be sleeved on one end of the connecting column 23 extending out of the limiting hole, and the fixing member 7 may connect the connecting column 23 to the limiting hole. By providing the fixing member 7, the position of the connecting column 23 in the limiting hole may be made more stable, and the loosening or displacement caused by external force or frequent use may be reduced, which helps to ensure the stability and reliability of the tube bender during use.

[0142] In some embodiments, the fixing member 7 may be a nut or a cap.

[0143] In some other embodiments, the limiting portion 6 may be slidably disposed on the positioning handle 1. When the limiting portion 6 moves along the positioning handle 1, the distance between the limiting portion 6 and the first end 21 can be adjusted to adjust the width of the inlet 204.

[0144] In some other embodiments, the positioning handle 1 can be set on the pipe bending disk 2, and the limiting portion 6 can be slidably set on the pipe bending disk 2.

[0145] Fig.11 for Figure 1 A schematic diagram of a pipe bending disk according to another embodiment of the present invention.

[0146] like Fig.11 As shown, in some embodiments, a first groove 205 is provided at the first end 21 of the curved tube wall 201, a second groove 206 is provided at the second end 22 of the curved tube wall 201, the limiting portion 6 is spaced apart from the first groove 205 to form an entrance 204, and the first groove 205 and the second groove 206 are staggered along the axial direction of the curved tube groove 202.

[0147] It should be noted that the elbow wall 201 has a certain width along the axial direction of the elbow disk 2, and the first slot 205 and the second slot 206 are staggered along the axial direction of the elbow slot 202, which can also be understood as the first slot 205 and the second slot 206 are staggered in the width direction.

[0148] In this embodiment, the first clamping groove 205 and the second clamping groove 206 are arranged alternately, so that the flat tube can gradually and stably change direction during the bending process, avoiding material breakage or uneven deformation caused by sudden large-angle turning. In addition, since both ends of the flat tube can be clamped in the first clamping groove 205 and the second clamping groove 206, the flat tube to be bent can also be effectively positioned and supported to prevent the flat tube from sliding during the bending process.

[0149] Specifically, Figure 6 and Fig.11As shown, the operating handle 3 is rotated to the circumferential outer side of the first end 21 of the curved tube wall 201, and the flat tube can extend into the bending space 300 along the first clamping groove 205, and then the other end of the flat tube is pre-bent so that the flat tube extending through the bending space 300 can be clamped in the second clamping groove 206. When the operating handle 3 is rotated, the operating handle 3 drives the bending portion 31 to perform a circular motion along the outer side of the curved tube groove 202. During this process, the bending portion 31 gradually contacts and applies force to the flat tube portion located in the first clamping groove 205, so that it begins to bend along a predetermined path toward the second clamping groove 206. Among them, due to the staggered arrangement of the first clamping groove 205 and the second clamping groove 206, the flat tube can be bent in a gradual and controllable manner, thereby ensuring the accuracy and consistency of the bending.

[0150] On the other hand, through the staggered arrangement of the first slot 205 and the second slot 206, not only the overall bending of the flat tube is achieved, but also the two ends of the flat tube bending portion 31 can be offset to achieve the bending of the flat tube in three dimensions. The flat tube bender of the present application is conducive to multi-angle bending of the flat tube, and is suitable for flat tube bending processing in heat exchangers.

[0151] like Fig.11 As shown, in some embodiments, the first clamping groove 205 and the second clamping groove 206 can be completely misaligned in the axial direction along the elbow groove 202 .

[0152] In some other embodiments, the first clamping groove 205 and the second clamping groove 206 partially overlap in the axial direction along the elbow groove 202 .

[0153] In some other embodiments, the bending groove 202 can be arranged to meander along the circumference of the bending wall 201. In this way, the flat tube can be extended into the bending space 300 through the continuously arranged bending groove 202, and driven by the operating handle 3, the bending portion 31 can bend the flat tube along the meandering direction of the bending groove 202.

[0154] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the scope of the present application is limited only by the attached claims.

Claims

1. A flat tube bender, used for bending flat tubes, It is characterized in that include: Positioning handle; A pipe bending plate is arranged on the positioning handle, and the outer peripheral wall of the pipe bending plate forms a pipe bending wall, and the pipe bending wall is in an arc shape; An operating handle, the operating handle is rotatably arranged on the outer peripheral side of the tube bending disk; a bending portion is formed on the side of the operating handle facing the tube bending wall, a bending space is formed between the bending portion and the tube bending wall, and the bending space can allow the flat tube to pass through; A distance adjusting component, one end of which is rotatably connected to the pipe bending disk, and the other end of which is connected to the operating handle; Wherein, the operating handle can drive the distance adjustment component to rotate relative to the tube bending disk, so that the bending portion rotates around the tube bending wall, so that the flat tube in the bending space is bent; The distance-adjusting component is a telescopic structure; when the length of the distance-adjusting component is extended, the distance between the curved tube wall and the bending portion can be increased to increase the width of the bending space; when the length of the distance-adjusting component is shortened, the distance between the curved tube wall and the bending portion can be reduced to reduce the width of the bending space.

2. The flat tube bender according to claim 1, It is characterized in that The distance adjustment assembly includes a first adjustment rod and a second adjustment rod, one end of the first adjustment rod is connected to the pipe bending plate, the other end of the first adjustment rod is provided with a slide groove, one end of the second adjustment rod is connected to the operating handle, and the other end of the second adjustment rod can be movably inserted into the slide groove; The second adjusting rod can slide in the sliding groove to adjust the length of the distance adjusting assembly.

3. The flat tube bender according to claim 2, It is characterized in that It also includes a locking piece, the second adjusting rod is provided with a locking hole, one end of the locking piece is arranged on the first adjusting rod, and the other end of the locking piece is passed through the locking hole to fix the first adjusting rod and the second adjusting rod.

4. The flat tube bender according to claim 3, It is characterized in that There are a plurality of locking holes, and the plurality of locking holes are sequentially and spaced apart from each other on the second adjusting rod along the extending direction of the sliding slot.

5. The flat tube bender according to claim 1, It is characterized in that The curved tube wall is respectively formed with a first end and a second end along both ends of the circumferential direction; The flat tube bender further includes a limiting portion, the limiting portion is connected to the positioning handle, the limiting portion is located on the circumferential outer side of the first end of the curved tube wall, and the limiting portion is spaced apart from the first end to form an inlet; When the bending portion rotates to the circumferential outer side of the first end, the inlet is communicated with the bending space, and the flat tube can extend into the bending space through the inlet.

6. The flat tube bender according to claim 5, It is characterized in that The pipe bend disk is provided with an introduction surface, one end of which is connected to the first end of the pipe bend wall, and an entrance is formed between the limiting portion and the introduction surface, and the width of the entrance gradually decreases in the direction approaching the pipe bend wall.

7. The flat tube bender according to claim 5, It is characterized in that The pipe bending disc is movably arranged on the positioning handle; When the pipe bending disc moves along the positioning handle, the distance between the limiting portion and the first end can be adjusted to adjust the width of the entrance.

8. The flat tube bender according to claim 7, It is characterized in that The positioning handle is provided with an adjustment hole, and the adjustment hole is a long hole; The pipe bending disc is protruded with a connecting column, the connecting column extends along the axial direction of the pipe bending disc, one end of the connecting column is connected to the pipe bending disc, and the other end of the connecting column is movably inserted into the limiting hole, and the connecting column can move along the length direction of the adjusting hole; When the connecting column moves along the length direction of the limiting hole, the distance between the limiting portion and the introduction surface can be adjusted.

9. The flat tube bender according to claim 8, It is characterized in that The flat tube bender includes a fixing piece, which is sleeved on one end of the connecting column extending out of the limiting hole, and the fixing piece connects the connecting column to the limiting hole.

10. The flat tube bender according to claim 5, It is characterized in that A first slot is provided at the first end of the curved pipe wall, a second slot is provided at the second end of the curved pipe wall, the limiting portion is spaced apart from the first slot to form the entrance, and the first slot and the second slot are staggered along the axial direction of the curved pipe slot.

11. The flat tube bender according to claim 1, It is characterized in that It also includes a first connecting member, which is arranged between the pipe bending disk and the distance adjustment assembly, one end of the first connecting member is detachably fixedly connected to one end of the distance adjustment assembly, and the other end of the first connecting member is detachably rotatably connected to the pipe bending disk; It also includes a second connecting member, which is arranged between the operating handle and the other end of the distance adjustment component. One end of the second connecting member is detachably fixedly connected to the operating handle, and the other end of the second connecting member is detachably fixedly connected to the other end of the distance adjustment component.

12. The flat tube bender according to claim 1, It is characterized in that The bend wall is recessed to form a bend groove, the bend groove is extended along the circumference of the bend plate, and the bending space is formed between the bottom surface of the bend groove and the bending portion.

13. The flat tube bender according to claim 12, It is characterized in that A pipe pressing groove is provided on the surface of the bending portion, and the bending space is formed between the groove bottom surfaces of the bending groove and the groove bottom surfaces of the pipe pressing groove.

Images