U-shaped pipe bending die
Through the split-type U-tube bent pipe mold, the disassembly connection between guide members and bent pipe components is solved, and the problems of poor universality of existing molds and difficulty in replacement after wear are achieved, making it easy to handle, adjust and replace the bent pipe wheel Function, improves work efficiency and reduces waste of consumables.
Patent Information
- Application Number
- CN202323339899.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2033-12-08
AI Technical Summary
The existing bent pipe mold design is poorly versatile, has a large weight and is inconvenient to carry. After the bent pipe wheel is worn, the entire mold needs to be replaced, resulting in low working efficiency and waste of consumables.
U-tube bent mold with split design, including guides, bent components and clamps, the bent wheels and bent strips are detachable, and the bent pipes are bent and pressed through guide grooves and compression grooves. The clamp drives the bend wheel to rotate to wrap the U-shaped tube, and each part of the mold can be replaced as needed.
It improves the versatility of the mold and is easy to handle and adjust. It only needs to replace the worn part, which improves work efficiency and reduces waste of consumables.
Smart Images
Figure CN222343873U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tube bending dies, and in particular to a U-shaped tube bending die. Background Art
[0002] U-shaped heat exchange tube is a semicircular pipe, and the distance d between the center lines of the two ends of the tube is equal to twice the bending radius R. U-shaped heat exchange tube is an important component of equipment such as steam turbines, and plays an important role in many parts. Since the number of U-shaped heat exchange tubes in each unit is quite large, the bending mold of heat exchange tubes is also used frequently, and the bending wheel, clamping block and other problems often occur.
[0003] When designing the bending mold used in the current pipe bending machine, the various sizes of each part are determined by the designer himself. Although it can be used normally, it has poor versatility. In addition, the various parts of the bending mold are all integral structures, and the weight is heavy when the bending radius is large, which is not conducive to manual handling. At the same time, due to the integral structure, after the bending wheel is worn, the entire bending wheel must be replaced, which has a long processing cycle, low work efficiency, and waste of consumables.
[0004] Therefore, in response to the above technical problems, how to provide a U-tube bending mold that is highly versatile, easy to carry and adjust, and easy to replace is a technical problem that technical personnel in this field need to solve. Utility Model Content
[0005] The purpose of the present application is to provide a U-shaped tube bending mold, which, through a split design, can be suitable for bending operations of U-shaped tubes of various specifications, and is easy to carry and adjust during subsequent use; at the same time, when the bending part is worn, only the bending part needs to be replaced.
[0006] To achieve the above objectives, the present application provides a U-shaped tube bending die, comprising:
[0007] A guide member is installed on the pipe bending machine, and the guide member is provided with a guide groove for guiding the U-shaped pipe;
[0008] A pipe bending assembly, used for bending the U-shaped pipe, comprising a base arranged at the rotation center of the rotating arm of the pipe bender, a protruding fixed shaft arranged in the middle of the base, a detachable pipe bending wheel rotatably arranged on the fixed shaft, a pipe bending groove arranged circumferentially on the pipe bending wheel, a detachable pipe bending strip arranged on the pipe bending wheel, a first pressing groove tangent to the pipe bending groove opened on the pipe bending strip, the pipe bending groove and the first pressing groove are used together to receive the U-shaped pipe guided out of the guide groove;
[0009] A clamping block is arranged on the rotating arm and moves toward or away from the pipe bending strip, and a second pressing groove matching the first pressing groove is arranged at one end of the clamping block facing the pipe bending strip, and the first pressing groove matches the second pressing groove to form a pressing groove matching the outer diameter of the U-shaped tube and pressing the U-shaped tube;
[0010] The clamping block rotates with the rotating arm to compress the U-shaped tube and wrap it in the elbow groove.
[0011] Preferably, a limiting nut is provided at the end of the fixed shaft, a support block is provided on the end surface of the base facing the tube bending wheel, the limiting nut and the support block abut against both sides of the tube bending wheel and limit the rotation of the tube bending wheel on a fixed plane.
[0012] Preferably, the center of the tube bending wheel coincides with the rotation center of the rotating arm, so that the center position of the tube bending wheel is fixed during the rotation process.
[0013] Preferably, the cross-sections of the curved pipe groove and the first pressing groove are semicircular, and the diameters of the two semicircles are the same and are equivalent to the diameter of the U-shaped pipe.
[0014] Preferably, a through bolt hole is provided at the bottom of the first clamping groove, and the first clamping groove is detachably connected to the pipe bending wheel via bolts and the bolt hole.
[0015] Preferably, the guide member is a guide plate, a side of the guide plate is provided with the guide groove, and a groove cross-section of the guide groove is semicircular, and a diameter thereof is the same as a diameter of the first clamping groove.
[0016] Preferably, the guide member is a guide wheel, and the number of the guide wheels is at least two, and they are rotatably arranged on the pipe bending machine. The outer periphery of any guide wheel is provided with a guide groove with a semicircular groove cross-section, and multiple guide grooves are used together to guide the U-shaped tube into the first clamping groove.
[0017] Preferably, the clamping block rotates with the rotating arm, comprising:
[0018] A connecting block is arranged on the rotating arm, and the rotating arm controls the connecting block to move toward or away from the bending strip, and a supporting plate is arranged on the connecting block;
[0019] The pressing plate has an overlapping portion with the supporting plate, and the pressing plate is fixed on the supporting plate through the overlapping portion.
[0020] Preferably, the second pressing groove is arranged on the side of the support plate facing the pipe bending strip, and the second pressing groove cooperates with the first pressing groove to form a hollow cylindrical pressing groove.
[0021] Compared with the above-mentioned background technology, the present application utilizes a guide member to guide the U-shaped tube into a tube bending assembly. The tube bending assembly is arranged on a rotating arm of a tube bending machine through a base. A protruding fixed shaft is arranged in the middle of the base, and a tube bending wheel is detachably rotatably arranged on the fixed shaft. A tube bending groove is provided in the circumference of the tube bending wheel, and the bending of the U-shaped tube is realized through the tube bending groove. At the same time, a detachable tube bending strip is also provided on the tube bending wheel, and a first clamping groove tangent to the tube bending groove is provided on the tube bending strip. When the U-shaped tube enters the tangent portion of the first clamping groove and the tube bending groove through the guide member, it can continue to enter the first clamping groove, and the U-shaped tube is clamped through the second clamping groove on the clamping block. The clamping block rotates under the drive of the rotating arm, and the tube bending wheel also rotates under the rotation of the clamping block, thereby compressing the U-shaped tube and winding it in the tube bending groove, thereby realizing the production of the U-shaped tube.
[0022] The pipe bending assembly of the present application is detachable as a whole, so it is easy to carry and adjust in subsequent use. At the same time, when making U-shaped pipes of different specifications as needed, the corresponding size of the pipe bending assembly can be selected according to actual conditions, thereby improving the versatility of the pipe bending mold. In addition, since the pipe bending assembly is a split design, when the pipe bending wheel or the pipe bending strip is worn, only the corresponding parts need to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0024] Figure 1 A schematic diagram of the structure of a U-shaped tube bending mold provided in an embodiment of the present application;
[0025] Figure 2 for Figure 1 Sectional view;
[0026] Figure 3 A schematic diagram of another U-shaped tube bending die structure provided in an embodiment of the present application;
[0027] Figure 4 for Figure 3 Cross-sectional view of the middle elbow assembly;
[0028] Figure 5 A schematic diagram of the structure of a bent pipe assembly provided in an embodiment of the present application;
[0029] Figure 6 A cross-sectional view of a pipe bending wheel and a pipe bending strip provided in an embodiment of the present application;
[0030] Figure 7 A schematic diagram of the clamping block structure provided in an embodiment of the present application;
[0031] Figure 8 This is a schematic diagram of the matching structure of the elbow assembly and the clamping block provided in an embodiment of the present application.
[0032] In the figure: 1, pipe bending machine 2, rotating arm 3, pipe bending wheel 31, pipe bending groove 4, guide member 41, guide groove 5, clamping block 51, connecting block 52, support plate 53, pressing plate 54, second clamping groove 6, pipe bending strip 61, first clamping groove 7, support block 8, fixed shaft 9, base 10, U-shaped pipe. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0034] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0035] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0036] like Figure 1 As shown, in this embodiment, a U-shaped tube bending mold is provided, which includes a guide member 4, a tube bending assembly, and a clamping block 5. The guide member 4 is installed on the tube bending machine 1 and fixed by bolts and other components. When it needs to be replaced due to wear and other problems, it is convenient to disassemble. A guide groove 41 is provided on the guide member 4, and the guide groove 41 can guide the U-shaped tube 10, so that the U-shaped tube 10 can stably enter the tube bending assembly in a fixed direction before being bent.
[0037] Please refer to Figure 1The guide member 4 is a guide plate, and a guide groove 41 is provided on the side of the guide plate. The groove section of the guide groove 41 is semicircular, and the diameter of the guide groove 41 is the same as the diameter of the U-shaped tube 10, thereby ensuring the stability of the U-shaped tube 10 in the guide groove 41. Similarly, since the U-shaped tube 10 needs to enter the elbow groove 31 and the first clamping groove 61 through the guide groove 41, the diameter of the guide groove 41 is the same as the diameter of the elbow groove 31 and the first clamping groove 61. It should be noted that the diameter of the elbow groove 31 and the diameter of the first clamping groove 61 are both the diameters of the semicircular structure of their groove cross-sections. The groove cross-section refers to the vertical section perpendicular to the groove direction, that is, the cross-sectional shape of the groove.
[0038] Please refer to Figure 3 The guide member 4 may also be a guide wheel, and the number of guide wheels is at least two, so as to provide a stable support effect. The guide wheel is rotatably arranged on the pipe bender 1, and a guide groove 41 with a semicircular groove section is opened on the outer circumference of any guide wheel. The plurality of guide grooves 41 are used together to guide the U-shaped pipe 10 into the first clamping groove 61. Similarly, the guide groove 41 here is similar to the guide groove 41 of the guide plate, and its groove section is also a semicircular structure, and has the same diameter as the first clamping groove 61 and the pipe bending groove 31.
[0039] It should be noted that the diameters of the guide groove 41, the pipe bending groove 31, and the first pressing groove 61 are all related to the diameter of the U-shaped tube 10. The diameter of the pipe bending wheel 3 is related to the bending radius of the U-shaped tube 10. Different diameters of the pipe bending wheel 3 and groove diameters can be selected according to actual needs, so as to be applicable to U-shaped tubes 10 of various specifications.
[0040] The pipe bending assembly is used to bend a U-shaped pipe 10. The pipe bending assembly includes a base 9 arranged at the rotation center of the rotating arm 2 of the pipe bender 1, and a fixed shaft 8 with an end extending out is arranged in the middle of the base 9, and the pipe bending wheel 3 is rotatably and detachably arranged on the fixed shaft 8.
[0041] The pipe bending groove 31 is provided on the outer periphery of the pipe bending wheel 3. At the same time, a detachable pipe bending strip 6 is provided on the pipe bending wheel 3. The first pressing groove 61 is provided on the pipe bending strip 6. At the same time, the first pressing groove 61 is tangent to the pipe bending groove 31. Please refer to Figure 5 When the U-shaped tube 10 enters the tangent portion, it can smoothly enter the first pressing groove 61 , providing necessary conditions for the bending of the U-shaped tube 10 .
[0042] In addition, the clamping block 5 is arranged on the rotating arm 2, and the rotating arm 2 can control the clamping block 5 to move toward or away from the bending strip 6. The end of the clamping block 5 facing the bending strip 6 is provided with a second clamping groove 54 that cooperates with the first clamping groove 61. The first clamping groove 61 cooperates with the second clamping groove 54 to form a clamping groove that matches the outer diameter of the U-shaped tube 10 and clamps the U-shaped tube 10.
[0043] Specifically, after the U-shaped tube 10 enters the first pressing groove 61, the clamping block 5 moves toward the tube bending strip 6, so that the first pressing groove 61 and the second pressing groove 54 correspond to form a pressing groove matching the outer diameter of the U-shaped tube 10, so that the U-shaped tube 10 is fixed in the first pressing groove 61. At the same time, the clamping block 5 rotates with the rotating arm 2, thereby squeezing the tube bending strip 6 and forcing the tube bending wheel 3 to rotate. Since the tube bending wheel 3 takes the rotation center of the rotating arm 2 as the center of the circle, the center position of the tube bending wheel 3 does not change when the rotating arm 2 rotates 180°, so when the U-shaped tube 10 is wound on the tube bending wheel 3, it can have a stable U-shaped tube 10 shape.
[0044] When the processing is completed, the clamping block 5 is away from the bending strip 6, so that the U-shaped tube 10 is separated from the clamping groove, so as to prepare for the next bending.
[0045] In summary of the above embodiments, the present application uses a guide member 4 to guide the U-shaped tube 10 to the tube bending assembly, and the tube bending assembly is arranged on the rotating arm 2 of the tube bending machine 1 through a base 9. A protruding fixed shaft 8 is arranged in the middle of the base 9, and the tube bending wheel 3 is detachably rotatably arranged on the fixed shaft 8. The tube bending wheel 3 is provided with a tube bending groove 31 in the circumferential direction, and the U-shaped tube 10 is bent by the tube bending groove 31; at the same time, a detachable tube bending strip 6 is also arranged on the tube bending strip 6, and a tube bending strip 6 is provided with a tube bending groove 31. The first clamping groove 61 is tangent to the bending groove 31. When the U-shaped tube 10 enters the tangent portion of the first clamping groove 61 and the bending groove 31 through the guide member 4, it can continue to enter the first clamping groove 61, and the U-shaped tube 10 is clamped through the second clamping groove 54 on the clamping block 5. The clamping block 5 rotates under the drive of the rotating arm 2, and the bending wheel 3 also rotates under the rotation of the clamping block 5, thereby compressing the U-shaped tube 10 and winding it in the bending groove 31, thereby realizing the production of the U-shaped tube 10.
[0046] The guide member 4 and the clamping block 5 are both detachably mounted, that is, they are mounted by bolts and other parts, so they are easy to carry and adjust in subsequent use. At the same time, when U-shaped tubes 10 of different specifications are made according to needs, the corresponding size of the bending assembly can be selected according to actual conditions, thereby improving the versatility of the bending mold. In addition, since the bending assembly is a split design, when the bending wheel 3 or the bending strip 6 is worn, only the corresponding parts need to be replaced.
[0047] Please refer to Figure 2 and Figure 4 A limiting nut is provided at the end of the fixed shaft 8, and a supporting block 7 is provided on the end surface of the base 9 facing the tube bending wheel 3. The limiting nut and the supporting block 7 respectively abut against the two sides of the tube bending wheel 3, but do not affect the rotation of the tube bending wheel 3, thereby limiting the rotation of the tube bending wheel 3 within a fixed plane and improving the manufacturing quality of the U-shaped tube 10.
[0048] It should be noted that, due to the different specifications of the U-shaped tube 10, bases 9 of different heights can be selected according to actual needs. Figure 2 The base 9 in the embodiment is higher, and Figure 4 The base 9 in the embodiment is relatively low, and no excessive restrictions are imposed here. For bases 9 of different heights, the heights of the tube bending wheels 3 on the top thereof are necessarily different, so the clamping blocks 5 and guide members 4 corresponding to the tube bending wheels 3 need to be selected to the corresponding heights, which will not be described in detail here, and can be selected according to actual needs.
[0049] Based on the above embodiment, the cross-sections of the bending groove 31 and the first clamping groove 61 are also semicircular, and the diameters of the two semicircles are the same and equivalent to the diameter of the U-shaped tube 10, thereby adapting to the diameter of the U-shaped tube 10 to achieve a stable bending effect.
[0050] A through bolt hole is provided at the bottom of the first clamping groove 61. Figure 6 The first clamping groove 61 is detachably connected to the tube bending wheel 3 through bolts and bolt holes, and the head of the bolt is lower than the lowest point of the first clamping groove 61, so as not to affect the entry of the U-shaped tube 10. The first clamping groove 61 is long and strip-shaped, which facilitates the U-shaped tube 10 to smoothly enter the first clamping groove 61 before processing.
[0051] Please note that, please refer to Figure 7 The clamping block 5 includes a connecting block 51 and a pressing plate 53. The connecting block 51 is arranged on the rotating arm 2, and the rotating arm 2 controls the connecting block 51 to move toward or away from the pipe bending strip 6. The height of the connecting block 51 is set according to the height of the pipe bending wheel 3 and the pipe bending strip 6. A supporting plate 52 is also arranged on the connecting block 51. There is a certain overlap between the pressing plate 53 and the supporting plate 52, and the pressing plate 53 is fixed to the supporting plate 52 through the overlapping portion. Similarly, the fixing method of bolts can be adopted to facilitate the removal of the pressing plate 53.
[0052] Please refer to Figure 8 The second pressing groove 54 is arranged on the side of the support plate 52 facing the bending strip 6, corresponding to the first pressing groove 61, and the two have the same length, so that the U-shaped tube 10 has a certain fixed length in the pressing groove, and the stability is better. The first pressing groove 61 cooperates with the second pressing groove to form a hollow cylindrical pressing groove.
[0053] In general, the present application increases the versatility of the mold through the split arrangement of multiple components, which can be detachably connected, and facilitates the repair of easily worn parts after damage after use.
[0054] It should be noted that the above-mentioned groove structure can be selected according to the diameter and bending radius of the U-shaped tube 10, and the height, width and material of each component can be selected according to the actual application situation and existing technical standards. They will not be described in detail here, and all fall within the scope of protection of this application.
[0055] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.
[0056] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.
Claims
1. A U-shaped tube bending die, characterized in that: include: A guide member is installed on the pipe bending machine, and the guide member is provided with a guide groove for guiding the U-shaped pipe; A pipe bending assembly, used for bending the U-shaped pipe, comprising a base arranged at the rotation center of the rotating arm of the pipe bending machine, a protruding fixed shaft arranged in the middle of the base, a detachable pipe bending wheel rotatably arranged on the fixed shaft, a pipe bending groove arranged circumferentially on the pipe bending wheel, a detachable pipe bending strip arranged on the pipe bending wheel, a first pressing groove tangent to the pipe bending groove opened on the pipe bending strip, the pipe bending groove and the first pressing groove are used together to receive the U-shaped pipe guided out of the guide groove; A clamping block is arranged on the rotating arm and moves toward or away from the tube bending strip, and a second pressing groove matching with the first pressing groove is arranged at one end of the clamping block facing the tube bending strip, and the first pressing groove matches with the second pressing groove to form a pressing groove matching with the outer diameter of the U-shaped tube and pressing the U-shaped tube; The clamping block rotates with the rotating arm to compress the U-shaped tube and wrap it in the elbow groove.
2. The U-shaped tube bending die according to claim 1, characterized in that: A limiting nut is arranged at the end of the fixed shaft, and a support block is arranged on the end surface of the base facing the pipe bending wheel. The limiting nut and the support block abut against two sides of the pipe bending wheel and limit the rotation of the pipe bending wheel on a fixed plane.
3. The U-tube bending die according to claim 1, characterized in that: The center of the circle of the tube bending wheel coincides with the rotation center of the rotating arm, so that the center position of the circle of the tube bending wheel is fixed during the rotation process.
4. The U-tube bending die according to claim 1, characterized in that: The cross-sections of the curved pipe groove and the first pressing groove are semicircular, and the diameters of the two semicircles are the same and are equivalent to the diameter of the U-shaped pipe.
5. The U-shaped tube bending die according to claim 4, characterized in that: A through bolt hole is provided at the bottom of the first clamping groove, and the first clamping groove is detachably connected to the pipe bending wheel via bolts and the bolt hole.
6. The U-tube bending die according to claim 5, characterized in that: The guide member is a guide plate, and the guide groove is provided on the side of the guide plate. The groove cross-section of the guide groove is semicircular, and the diameter is the same as the diameter of the first pressing groove.
7. The U-tube bending die according to claim 5, characterized in that: The guide member is a guide wheel, and the number of the guide wheels is at least two, and they are rotatably arranged on the pipe bending machine. The outer periphery of any guide wheel is provided with a guide groove with a semicircular groove cross-section, and the multiple guide grooves are used together to guide the U-shaped tube into the first clamping groove.
8. The U-shaped tube bending die according to any one of claims 1 to 7, characterized in that: The clamping block rotates with the rotating arm, and comprises: A connecting block is arranged on the rotating arm, and the rotating arm controls the connecting block to move toward or away from the bending strip, and a supporting plate is arranged on the connecting block; The pressing plate has an overlapping portion with the supporting plate, and the pressing plate is fixed on the supporting plate through the overlapping portion.
9. The U-tube bending die according to claim 8, characterized in that: The second pressing groove is arranged on the side of the support plate facing the pipe bending strip, and the second pressing groove cooperates with the first pressing groove to form a hollow cylindrical pressing groove.