Pipe fitting push-bending die and pipe fitting push-bending equipment
By combining the tube bending mold and the positioning component, the aesthetic and strength issues of the aluminum alloy fork structure are solved, achieving efficient and low-cost aluminum alloy tube forming and reducing the forming defect rate.
Patent Information
- Application Number
- CN202520530380.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The existing aluminum alloy front fork structure has problems with poor aesthetics and unstable strength at the welded joints. In addition, the tubes are prone to slippage during the water expansion molding process, which leads to poor molding and increases the scrap rate.
The pipe bending die includes a base plate, a module, a positioning component, and a pusher head. The horizontally moving pusher head pushes the pipe into the receiving groove for plastic deformation. The positioning component ensures accurate positioning of the pipe and prevents slippage. The pusher head material, such as polyoxymethylene, has self-lubricating properties.
It reduces the vertical space requirement of the machine tool, improves forming accuracy, reduces the occurrence of wrinkles and dents, and reduces the scrap rate of pipe fittings.
Smart Images
Figure CN223875857U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to metal processing technical field especially relates to a pipe push bending die and pipe push bending equipment. BACKGROUND
[0002] The front fork structure of the bicycle is usually made of aluminum alloy or carbon fiber, the front fork of carbon fiber material is usually an integral structure, which improves the light weight while ensuring the structural strength, and also takes into account the aesthetics. The cost of carbon fiber material is relatively high, which cannot be applied to low-priced models. The cost of aluminum alloy material has great advantages compared with carbon fiber, and also has relatively high structural strength and light weight to a certain extent, so most of the existing models use aluminum alloy to manufacture the front fork. The aluminum alloy front fork is usually welded to connect two fork legs and a shoulder cover, which has obvious welds at the welding position, affecting the aesthetics, and the welding position is prone to poor welding, which affects the strength and life of the weld.
[0003] To this end, the prior art provides an integral aluminum alloy front fork structure, which is formed by water swelling after vertical bending of an aluminum alloy blank pipe. During the bending process, on the one hand, the machine table of the pressure equipment needs to have a large enough vertical space, and on the other hand, the pipe made of aluminum alloy material is prone to small amplitude sliding due to gravity, resulting in mismatch between the thickness and deformation of the pipe at the local position after final forming, and causing wrinkles or depressions and other defects leading to scrap. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a pipe push bending die and pipe push bending equipment for bending and forming aluminum alloy pipes, simplifying the process steps and improving production efficiency.
[0005] The utility model provides a pipe push bending die, which comprises a bottom plate, a module, a positioning assembly and a push head, the module is fixedly connected to the bottom plate, the module is provided with a containing groove, the positioning assembly is installed on the bottom plate, the positioning assembly is used for positioning and supporting the pipe, the module and the push head are located on the two sides of the pipe respectively, the push head can move along the horizontal direction relative to the bottom plate and enter the containing groove, so as to push the pipe into the containing groove to cause plastic deformation.
[0006] As a preferred technical scheme of the pipe push bending die, the push head can be attached to the inner side wall of the containing groove of the module, the inner side wall of the containing groove of the module is also provided with a first forming groove and a second forming groove, the push head is provided with a third forming groove, the third forming groove and the first forming groove and the second forming groove jointly form a forming space, and the forming space is used for containing the pipe.
[0007] As the preferred technical scheme of the pipe pushing and bending die, the module comprises two sub-blocks, both of which are fixedly connected to the bottom plate, both of which are provided with the first forming groove and the second sub-forming groove, and both of which are combined to form the accommodating groove.
[0008] As the preferred technical scheme of the pipe pushing and bending die, the module is further provided with a lead-in part, which is a round corner structure, and the lead-in part is arranged at one end of the groove wall of the first forming groove away from the groove wall of the second forming groove.
[0009] As the preferred technical scheme of the pipe pushing and bending die, the push head is provided with a limiting groove near one end of the pipe, and when the push head pushes the pipe into the accommodating groove, part of the pipe is matched with the groove wall of the limiting groove.
[0010] As the preferred technical scheme of the pipe pushing and bending die, the bottom plate is provided with a sliding rail, the sliding rail extends in the same direction as the accommodating groove, the push head is provided with a sliding groove, and the push head is slidably connected with the sliding rail through the sliding groove.
[0011] As the preferred technical scheme of the pipe pushing and bending die, the positioning assembly comprises an extension plate, a clamping plate and two guide blocks, both of which are mounted on the bottom plate and located on both sides of the module, the guide blocks are used for supporting the pipe, one end of the extension plate is mounted on the bottom plate, the other end extends away from the bottom plate, the clamping plate is fixedly connected to the end of the extension plate away from the bottom plate, and the clamping plate is used for abutting with one end of the pipe.
[0012] As the preferred technical scheme of the pipe pushing and bending die, the clamping plate is provided with an adjusting hole, the adjusting hole extends along the length direction of the extension plate, and a fastener passes through the adjusting hole to fixedly connect the clamping plate with the extension plate.
[0013] As the preferred technical scheme of the pipe pushing and bending die, the push head is made of polyformaldehyde, polyketone, polyethylene or nylon.
[0014] The utility model provides a pipe pushing and bending equipment, including machine table and pipe pushing and bending die of any scheme above, the bottom plate is installed on the machine table.
[0015] The utility model has the advantages that:
[0016] The utility model provides a kind of pipe pushing bending mould, and pipe is positioned and supported by positioning assembly, and push head is pushed into accommodating groove when being horizontally moved, make pipe plastic deformation, pipe is finally pushed and bent as required structure under the constraint of push head and module.Due to the horizontal movement of push head, additional demand is not required to the vertical space of pressure equipment machine table in forming process, and pipe is positioned and supported by positioning assembly, guarantee the initial position accuracy of pipe, avoid the situation that pipe local deformation and material thickness are not matched due to the inaccuracy of position after pipe sliding, to reduce the probability of wrinkle and depression, reduce scrap rate.
[0017] The utility model provides a kind of pipe pushing bending equipment, by using the pipe pushing bending mould of the utility model, reduce the demand to the vertical height of machine table, reduce the scrap rate of pipe after processing simultaneously. ACCURACY
[0018] Figure 1 It is one of the structure schematic diagram that pipe pushing bending mould in the utility model embodiment is bent to pipe;
[0019] Figure 2 It is the second structure schematic diagram that pipe pushing bending mould in the utility model embodiment is bent to pipe;
[0020] Figure 3 It is the structure schematic diagram of the module of pipe pushing bending mould in the utility model embodiment;
[0021] Figure 4 It is the sectional view of the module of pipe pushing bending mould in the utility model embodiment;
[0022] Figure 5 It is the structure schematic diagram of the push head of pipe pushing bending mould in the utility model embodiment;
[0023] Figure 6 It is the sectional view of the push head of pipe pushing bending mould in the utility model embodiment.
[0024] In the drawing:
[0025] 100, pipe;
[0026] 1, bottom plate;11, slide rail;2, module;21, first forming groove;22, second forming groove;23, import part;3, push head;31, third forming groove;32, limit slot;33, sliding slot;4, guide block;41, guide wall;51, extension plate;52, clamping plate;521, adjusting hole. DETAILED DESCRIPTION
[0027] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship 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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the first feature is "above", "above" and "above" of the second feature, which includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" of the second feature, which includes the first feature below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.
[0031] As Figures 1-6The utility model provides a pipe push bending mould for pipe 100 push bending forming, the pipe 100 in this embodiment is aluminium alloy material. The pipe push bending mould includes bottom plate 1, module 2, positioning assembly and push head 3. Bottom plate 1 is horizontally arranged, module 2 is fixedly connected on bottom plate 1, and the accommodating groove is provided on module 2 and extends along the horizontal direction. The positioning assembly is installed on bottom plate 1 and located at the outside of the accommodating groove opening of module 2, and the positioning assembly is used for positioning and supporting the pipe 100. Module 2 and push head 3 are located at the two sides of pipe 100 respectively, push head 3 can move along the horizontal direction relative to bottom plate 1 and enter the accommodating groove to push pipe 100 into the accommodating groove and make plastic deformation. That is, the moving direction of push head 3 is consistent with the extension direction of the accommodating groove, and the push bending forming of pipe 100 is completed after push head 3 moves to the position, at this time, push head 3 reversely moves and exits from the accommodating groove to facilitate taking out the pipe 100 after push bending. The pipe push bending mould in this embodiment positions and supports pipe 100 through the positioning assembly, and pipe 100 is pushed into the accommodating groove by push head 3 during horizontal movement, so that pipe 100 is deformed plastically, and pipe 100 is finally pushed and bent into the required structure under the constraint of push head 3 and module 2. Since push head 3 moves horizontally, there is no additional requirement for the vertical space of the pressure equipment machine table during the forming process, and the positioning assembly is used for positioning and supporting pipe 100, so that the initial position of pipe 100 is accurate, and the situation that the local deformation of pipe 100 does not match the thickness due to the inaccurate position of pipe 100 after sliding is avoided, thereby reducing the probability of wrinkles and depressions and reducing the scrap rate.
[0032] Further, push head 3 can be attached to the inner side wall of the accommodating groove of module 2, and the inner side wall of the accommodating groove of module 2 is further provided with a first forming groove 21 and a second forming groove 22, and push head 3 is provided with a third forming groove 31, which will be described in detail with reference to Figures 3-6 At the same time that push head 3 is attached to the inner side wall of the accommodating groove, the third forming groove 31 of push head 3 and the first forming groove 21 and the second forming groove 22 on the inner side wall of the accommodating groove form a forming space together, the forming space is used for accommodating pipe 100, and the groove wall shape of the first forming groove 21, the second forming groove 22 and the third forming groove 31 matches the external shape of the corresponding pipe 100, so as to provide a space for accommodating pipe 100 during the forming process and further shape pipe 100. At the same time, push head 3 is attached to the inner side wall of the accommodating groove, so that the position of push head 3 is accurate after moving to the position, which further improves the shape accuracy of the pipe 100 after forming, and further avoids the occurrence of wrinkles and depressions and other defects.
[0033] Specifically, the module 2 includes two sub-blocks, both of which are fixedly connected to the bottom plate 1 by bolts. Both of the two sub-blocks are provided with a first forming groove 21 and a second sub-forming groove, and the two sub-blocks jointly form a receiving groove after being buckled, and the second sub-forming grooves of the two sub-blocks jointly form a second forming groove 22. The pipe fitting 100 in the embodiment forms an integrally formed shoulder cover and two fork legs after the push bending is completed, the first forming groove 21 corresponds to the fork legs, and the second forming groove 22 corresponds to the shoulder cover. In this way, the process difficulty in the manufacturing process of the module 2 is reduced.
[0034] Optionally, as shown in Figure 3 , the module 2 is also provided with a lead-in portion 23, the lead-in portion 23 is a round corner structure, the lead-in portion 23 is arranged at one end of the groove wall of the first forming groove 21 away from the groove wall of the second forming groove 22, that is, the lead-in portion 23 of the round corner structure is arranged at the opening position of the receiving groove, so that the pipe fitting 100 can enter the receiving groove more smoothly.
[0035] Further, as shown in Figure 5 , the end of the push head 3 close to the pipe fitting 100 is provided with a limiting groove 32, which is a circular groove arranged on the groove wall of the third forming groove 31. When the push head 3 pushes the pipe fitting 100 into the receiving groove, the end of the push head 3 close to the pipe fitting 100, that is, the front end of the push head 3, first contacts the pipe fitting 100 and provides a pushing force to the pipe fitting 100. The part of the pipe fitting 100 in contact with the push head 3 plastically deforms under the action of the pushing force, accompanied by material flow. The curvature of the pipe fitting 100 after forming at the contact position with the front end of the push head 3 is larger, and the probability of wrinkling is higher. The arrangement of the limiting groove 32 enables a part of the material of the pipe fitting 100 to flow into the limiting groove 32 during the forming process, thereby reducing the probability of wrinkling. At this time, part of the pipe fitting 100 cooperates with the groove wall of the limiting groove 32, so that the groove wall of the limiting groove 32 limits the pipe fitting 100, avoiding the pipe fitting 100 from sliding along its extension direction during the push bending forming process.
[0036] Further, as shown in Figures 1-6 , the bottom plate 1 is provided with a slide rail 11 extending in the same direction as the receiving groove, and the push head 3 is provided with a sliding groove 33 and is slidably connected with the slide rail 11 through the sliding groove 33. Through the sliding cooperation of the sliding groove 33 and the slide rail 11, it is ensured that the path of the push head 3 during movement will not deviate, thereby ensuring the quality of the pipe fitting 100 after forming. The end of the slide rail 11 can be provided with a circular arc chamfer or a semicircular structure to facilitate cooperation with the sliding groove 33. In the embodiment, the sliding groove 33 and the slide rail 11 are provided in a rectangular structure, and in other embodiments, they can also be provided in a dovetail structure to provide vertical constraint to the push head 3.
[0037] Further, please refer to Figures 1-2As shown, the positioning assembly comprises an extension plate 51, a clamping plate 52 and two guide blocks 4. The two guide blocks 4 are both mounted on the base plate 1 and are respectively located on the two sides of the module 2. The guide blocks 4 extend in the horizontal direction and are approximately perpendicular to the moving direction of the push head 3. The guide blocks 4 are used to support the pipe 100. The corresponding guide block 4 is provided with a guide wall 41. The wall surface shape of the guide wall 41 matches the shape of the pipe 100. One end of the extension plate 51 is mounted on the base plate 1 and the other end extends away from the base plate 1. In this embodiment, the extension plate 51 extends to the side of the base plate 1. The extending direction of the extension plate 51 is parallel to the extending direction of the guide block 4. The clamping plate 52 is fixedly connected to the end of the extension plate 51 away from the base plate 1. The clamping plate 52 is used to abut one end of the pipe 100. After the pipe 100 is loaded into the positioning assembly, the guide blocks 4 support the pipe 100. The push head 3 moves to the inside of the containing groove. The middle part of the pipe 100 is pushed forward so that the pipe 100 contacts the inner wall of the containing groove. Then the clamping plate 52 is fixedly connected with the extension plate 51 and abuts one end of the pipe 100. Thus, the pipe 100 cannot slide along its extending direction. This ensures that the pipe 100 will not slide along its extending direction when the pipe 100 is initially pushed and bent. During the process of pushing and bending the pipe 100, part of the material of the pipe 100 flows into the limiting groove 32 of the push head 3. Thus, the pipe 100 will not slide along its extending direction during the process of pushing and bending. This ensures that the pipe 100 will not slide along its extending direction during the whole process of pushing and bending. It should be pointed out that the middle part of the pipe 100 has a certain protrusion after the previous process. Thus, the middle part of the pipe 100 can first contact and abut the inner wall of the containing groove under the pushing of the push head 3. At the same time, the middle part of the pipe 100 also abuts the guide wall 41 of the guide block 4. At this time, the clamping plate 52 abuts one end of the pipe 100. Thus, the pipe 100 is positioned under the joint action of the guide blocks 4, the module 2, the push head 3 and the clamping plate 52. The processing technology of the pipe 100 before pushing and bending and the related structure are prior art in the field. For example, the pipe blank can be obtained by the existing technologies such as inclined pipe drawing, pipe drawing with inclination and flattening. Figure 1 The pipe 100 before pushing and bending shown in the middle.
[0038] Optionally, an adjusting hole 521 is arranged on the clamping plate 52. The adjusting hole 521 is an oblong hole. The adjusting hole 521 extends along the length direction of the extension plate 51. A fastener passes through the adjusting hole 521 to fixedly connect the clamping plate 52 with the extension plate 51. The clamping plate 52 is an L-shaped plate. One part is used to fixedly connect with the extension plate 51. The other part is used to abut one end of the pipe 100. By arranging the adjusting hole 521, the position of the clamping plate 52 on the extension plate 51 can be changed. Thus, the positioning requirement of different sizes of pipes 100 can be met.
[0039] Optionally, the push head 3 can be made of polyoxymethylene, polyketone, polyethylene, nylon or other materials with certain elasticity and self-lubricating properties. In the embodiment, the push head 3 is preferably made of polyoxymethylene. Polyoxymethylene has good self-lubricating properties and certain elasticity, which can further reduce the probability of wrinkles of the pipe 100 during the push bending process of the pipe 100.
[0040] The utility model provides a kind of pipe pushing bending equipment, including machine table and the pipe pushing bending mould in the embodiment, bottom plate 1 is installed on machine table. By using the pipe pushing bending mould of the utility model, the demand of vertical height at machine table is reduced, and the rejection rate of pipe 100 after processing is reduced
[0041] The utility model provides a kind of pipe pushing bending method, using the pipe pushing bending mould in the embodiment to push bend pipe 100, and the pipe pushing bending method includes:
[0042] Pipe 100 is positioned and supported on the positioning assembly, and located between module 2 and push head 3;
[0043] Push head 3 is horizontally moved to push pipe 100 into the containing groove of module 2, so that pipe 100 occurs plastic deformation;
[0044] Push head 3 is reversely moved to leave containing groove, and pipe 100 after push bending is taken out.
[0045] In the process that push head 3 pushes pipe 100 into the containing groove of module 2, the feed speed of push head 3 does not exceed preset value, to avoid that pipe 100 occurs wrinkles or pit due to too fast feed speed. The feed speed of push head 3 is determined according to the aluminum alloy grade used by pipe 100 and the specification of pipe 100, which is not specifically limited here. By using the pipe pushing bending mould of the utility model to push bend pipe 100, the probability of wrinkles and depression of pipe 100 after forming is reduced, and the rejection rate is reduced.
[0046] Obviously, the above embodiment of the utility model is only for clear illustration of the utility model, and is not the limitation of the embodiment of the utility model. For ordinary skilled person in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.
Claims
1. A tube push bending die, characterized by, Include: The bottom plate (1); The module (2) is fixedly connected to the bottom plate (1), and the module (2) is provided with a containing groove; Positioning assembly, the positioning assembly is installed on the bottom plate (1), and the positioning assembly is used for positioning and supporting the pipe (100); The push head (3) and the push head (3) are respectively located on both sides of the pipe (100), and the push head (3) can move along the horizontal direction relative to the bottom plate (1) and enter the containing groove, so that the pipe (100) is pushed into the containing groove and plastic deformation occurs.
2. A tube-pushing and bending die according to claim 1, characterized in that The push head (3) can be combined with the inner side wall of the containing groove of the module (2), and the inner side wall of the containing groove of the module (2) is further provided with a first forming groove (21) and a second forming groove (22), the push head (3) is provided with a third forming groove (31), the third forming groove (31) and the first forming groove (21) and the second forming groove (22) form a forming space, and the forming space is used for containing the pipe (100).
3. A tube-pushing and bending die according to claim 2, wherein The module (2) includes two sub-blocks, both of which are fixedly connected to the bottom plate (1), both of which are provided with the first forming groove (21) and the second forming groove, and both of which are combined to form the containing groove, and the second forming groove of the two sub-blocks forms the second forming groove (22).
4. The tube-pushing and bending die according to claim 2, wherein The module (2) is further provided with a lead-in portion (23), which is a round corner structure, and the lead-in portion (23) is provided at one end of the groove wall of the first forming groove (21) away from the groove wall of the second forming groove (22).
5. The tube-bending die of claim 1, wherein The end of the push head (3) close to the pipe (100) is provided with a limiting groove (32), and when the push head (3) pushes the pipe (100) into the containing groove, part of the pipe (100) cooperates with the groove wall of the limiting groove (32).
6. The tube-pushing and bending die according to claim 1, wherein The bottom plate (1) is provided with a slide rail (11), the slide rail (11) extends in the same direction as the containing groove, the push head (3) is provided with a sliding groove (33), and the push head (3) is connected with the slide rail (11) through the sliding groove (33).
7. The tube-pushing and bending die according to claim 1, wherein The positioning assembly includes an extension plate (51), a clamping plate (52) and two guide blocks (4), both of which are installed on the bottom plate (1) and are respectively located on both sides of the module (2), the guide block (4) is used for supporting the pipe (100), one end of the extension plate (51) is installed on the bottom plate (1), the other end extends away from the bottom plate (1), the clamping plate (52) is fixedly connected to one end of the extension plate (51) away from the bottom plate (1), and the clamping plate (52) is used for abutting with one end of the pipe (100).
8. A tube-pushing and bending die according to claim 7, characterized in that The clamping plate (52) is provided with an adjusting hole (521), the adjusting hole (521) extends along the length direction of the extension plate (51), and the fastener passes through the adjusting hole (521) to fixedly connect the clamping plate (52) with the extension plate (51).
9. A tube-pushing and bending die according to any one of claims 1 to 8, characterized in that Said push head (3) is a piece of polyoxymethylene, a piece of polyketone, a piece of polyethylene or a piece of nylon.
10. A tube pushing and bending apparatus comprising a table, characterized in that, Also included is the pipe pushing and bending die of any one of claims 1-9, wherein the bottom plate (1) is installed on the machine table.