Multi-layer bent pipe forming equipment

Abstract

The utility model discloses a multi-layer bent pipe forming device, which relates to the technical field of pipe fitting processing and comprises a fixed base, a lifting seat, a pipe clamping and feeding mechanism and a die group. The pipe clamping and feeding mechanism longitudinally and linearly reciprocates on the fixed base, and clamps and conveys a to-be-machined pipe from the end part; the die set comprises a left profiling die set and a right profiling die set which are oppositely arranged on the left side and the right side of the lifting base, and the left profiling die set and the right profiling die set can move oppositely to clamp a to-be-machined workpiece and drive the to-be-machined workpiece to complete bending in the rotating process. The left profiling die set and the right profiling die set each comprise a plurality of layers of dies, the dies on all the layers are matched with one another, and each layer is provided with profiling bending parts with different bending radians. According to the pipe bending equipment, the dies are switched by lifting the multiple layers of die sets, the previous bending is prevented from being damaged, and pipe fittings in any shape can be machined. The problems that a single-layer straight die limits the length of a linear section and conducts short-distance continuous bending are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting processing technical field especially relates to a multilayer elbow forming equipment. BACKGROUND

[0002] The automobile exhaust pipe is used for discharging the exhaust gas generated after the engine combustion. In order to reduce the noise, avoid the sensitive area, adapt the vehicle layout, adjust the exhaust back pressure and other purposes, the elbow processing is usually needed to the exhaust pipe. At present, the single layer straight die is usually used in the industry to carry out the elbow forming processing, and the length requirement is needed to the straight line segment between two elbows, and the design requirement of the near distance continuous bending cannot be met. Therefore, it is necessary to design a multilayer elbow forming equipment to solve the above problems. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of multilayer elbow forming equipment, increase multilayer profiled elbow die on the basis of single layer straight die, so that when carrying out near distance continuous elbow, product bending position is not destroyed by die, by increasing multilayer profiled elbow die, the design requirement of near distance continuous bending is met.

[0004] To achieve the above object, the utility model provides the following scheme: a kind of multilayer elbow forming equipment, comprising:

[0005] Fixed base;

[0006] Pipe clamping and feeding mechanism, longitudinal linear reciprocating motion on the fixed base, for clamping and longitudinally conveying pipe to be processed from end;

[0007] Lifting seat, be located in the longitudinal side of the fixed base, left profiled die set and right profiled die set are rotationally connected on the lifting seat, the left profiled die set and right profiled die set can be moved from the two sides of pipe to be processed Form clamping, and drive pipe to be processed to complete bending in the rotating process;

[0008] The left profiled die set includes a plurality of left profiled dies arranged from top to bottom, and correspondingly, the right profiled die set includes a plurality of right profiled dies arranged from top to bottom, the left profiled die and the right profiled die of each layer are matched, and each layer has a profiled bending part with different bending radii.

[0009] Optionally, a rotary seat is rotationally connected above the lifting seat, the left profiled die set and the right profiled die set are located above the rotary seat, and a rotating mechanism and an arc-shaped track are connected to the bottom of the rotary seat.

[0010] Optionally, the rotating seat is provided with a first sliding rail and a second sliding rail, a plurality of the right side profiling dies are fixed on a first sliding seat which slides on the first sliding rail, and a plurality of the left side profiling dies are fixed on a second sliding seat which slides on the second sliding rail.

[0011] Optionally, the first sliding seat is sequentially stacked with four right side profiling dies, and the second sliding seat is sequentially stacked with four left side profiling dies.

[0012] Optionally, the right side of the four left side profiling dies is provided with a left side clamping groove, and the left side of the four right side profiling dies is provided with a right side clamping groove matched with the left side clamping groove; the left side clamping groove close to one side of the pipe clamping and feeding mechanism has a circular-arc-shaped bending inlet; one side of the left side clamping groove away from the pipe clamping and feeding mechanism on three of the left side profiling dies has a left side profiling bending part; one side of the right side clamping groove away from the pipe clamping and feeding mechanism on three of the right side profiling dies has a right side profiling bending part, and the left side profiling bending part and the right side profiling bending part have the same bending path, and the two form a curved clamping channel with smooth curved transition.

[0013] Optionally, the curved clamping channel formed by the left side clamping groove and the right side clamping groove has a curved amplitude which increases layer by layer from the second layer to the fourth layer.

[0014] Optionally, the side of the right side profiling die group close to the pipe clamping and feeding mechanism is further provided with a positioning die group, and the positioning die group comprises at least one straight clamping groove.

[0015] Optionally, the positioning die group rises and falls synchronously with the left side profiling die group and the right side profiling die group.

[0016] Optionally, one side of the positioning die group is further provided with a lifting guide seat, and the positioning die group slides on the lifting guide seat.

[0017] Optionally, the pipe clamping and feeding mechanism is provided with a rotating module for driving the pipe to be processed to rotate around an axis.

[0018] Compared with the prior art, the embodiments of the utility model have at least the following beneficial effects:

[0019] The utility model discloses a multi-layer die group is controlled to switch the die, and the last sequence of bending cannot be damaged under the clamping of the profiling die, and the pipe fitting processing of arbitrary shape can be satisfied. The multi-layer pipe bending forming equipment of the utility model solves the limitation of the length of the straight line between two bends of the ordinary single-layer straight die, and solves the problem that the close-range continuous bending cannot be satisfied. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0021] Figure 1 It is a front view of the multi-layer elbow pipe forming equipment of the embodiment of the present application.

[0022] Figure 2 It is a top view of the multi-layer elbow pipe forming equipment of the embodiment of the present application.

[0023] Figure 3 It is a structural schematic view of the multi-layer die set of the multi-layer elbow pipe forming equipment of the embodiment of the present application.

[0024] Figure 4 It is an enlarged view of one layer in the multi-layer die set of the embodiment of the present application.

[0025] Figure 5 It is a machining process schematic view of the multi-layer elbow pipe forming equipment of the embodiment of the present application Figure 1 ;

[0026] Figure 6 It is a machining process schematic view of the multi-layer elbow pipe forming equipment of the embodiment of the present application Figure 2 ;

[0027] Figure 7 It is a machining process schematic view of the multi-layer elbow pipe forming equipment of the embodiment of the present application Figure 3 ;

[0028] Figure 8 It is a machining process schematic view of the multi-layer elbow pipe forming equipment of the embodiment of the present application Figure 4 ;

[0029] Figure 9 It is a structural view of the single-layer straight elbow pipe die of the prior art.

[0030] Figure 10 It is a structural schematic view of the pipe material after machining in the embodiment of the present application.

[0031] In the diagram: 1. Fixed base; 2. Lifting seat; 3. Rotating seat; 4. First slide rail; 5. First slide block; 6. Second slide rail; 7. Second slide block; 8. Circular track; 9. Rotating mechanism; 10. Left contouring mold assembly; 11. Left contouring mold one; 12. Left contouring mold two; 13. Left contouring mold three; 14. Left contouring mold four; 15. Lifting mechanism; 16. Pipe clamping and feeding mechanism; 20. Right contouring mold assembly; 21. Right... 1. Side contouring mold 1; 22. Right side contouring mold 2; 23. Right side contouring mold 3; 24. Right side contouring mold 4; 30. Positioning mold group; 31. Positioning mold 1; 32. Positioning mold 2; 33. Positioning mold 3; 34. Positioning mold 4; 35. Lifting guide seat; 40. Pipe to be processed; 50. Processed pipe; 131. Left side clamping groove; 132. Left side contouring bend; 231. Right side clamping groove; 232. Right side contouring bend. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 9 As shown, the existing single-layer straight pipe bending mold has a straight groove structure. The part of the pipe clamped in the straight groove cannot be bent. Therefore, the length L2 of the straight section in the pipe 50 after processing is greater than or equal to the mold length L1. Furthermore, stress concentration and bending damage are easily generated at the bending position during the bending process.

[0034] Therefore, this utility model embodiment proposes a multi-layer pipe bending forming equipment, which adds a multi-layer contour bending mold to the single-layer straight mold, so that the bending part of the product is not damaged by the mold when performing close-distance continuous bending. By adding a multi-layer contour bending mold, the design requirements for close-distance continuous bending are met.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figures 1 to 8As shown, the utility model embodiment provides a kind of multilayer elbow forming equipment, including fixed base 1, the side of fixed base 1 is provided with lifting seat 2, and pipe material clamping feeding mechanism 16 is linearly reciprocated on fixed base 1, is used to form clamping from the end of pipe material 40 to be processed, and forwards the pipe material 40 to be processed, it is also used to rotate pipe material 40 to be processed simultaneously.For easy understanding, in the present embodiment, the feeding direction of pipe material 40 to be processed is longitudinal or front-back direction, and the clamping direction of each die set is transverse or left-right direction.

[0037] Specifically, the die set includes left side profiling die set 10, right side profiling die set 20 and positioning die set 30, wherein the left side profiling die set 10 and the right side profiling die set 20 cooperate with each other, and are fixed on a rotating seat 3, can be rotated synchronously to realize the elbow operation, the rotating seat 3 is connected with a rotating mechanism 9 at the bottom, and the rotating mechanism 9 is fixedly connected with the lifting seat 2, for driving the rotating seat 3 to rotate.The positioning die set 30 is directly connected with the lifting seat 2 by sliding, and can be close to or away from the pipe material 40 to be processed to realize the limiting from at least one side of the pipe material 40 to be processed.At the same time, a first sliding rail 4 and a second sliding rail 6 are arranged above the rotating seat 3, and a first sliding seat 5 and a second sliding seat 7 are slidably arranged on the two sliding rails in opposite directions, the right side profiling die set 20 is fixed on the first sliding seat 5, and the left side profiling die set 10 is fixed on the second sliding seat 7, and is driven by a driving mechanism respectively, to realize the mutual approach and away of the left side profiling die set 10 and the right side profiling die set 20.When the left side profiling die set 10 and the right side profiling die set 20 approach, the positioning die set 30 also approaches the pipe material 40 to be processed synchronously under the driving of another driving mechanism, and the three die sets clamp the pipe material 40 to be processed, to ensure that the pipe material 40 to be processed is in a stable clamping state before bending.

[0038] In some embodiments, a circular track 8 for supporting and guiding the rotation of the rotating seat 3 is further arranged on the rotating seat 3, to ensure the accuracy during bending.

[0039] In some embodiments, the positioning die set 30 can also linearly slide on the rotating seat 3 through a sliding base, and the sliding base can also be synchronously driven by the driving mechanism driving the right side profiling die set 20, to ensure that the travel of the positioning die set 30 and the right side profiling die set 20 is consistent during each clamping.

[0040] In some embodiments, a lifting guide seat 35 is further provided on the side of the positioning mold assembly 30. The positioning mold assembly 30 and the lifting guide seat 35 are slidably connected to ensure that the positioning mold assembly 30 is constrained by the lifting guide seat 35 when it moves up and down. The lifting guide seat 35 can be connected to the slider of the positioning mold assembly 30 and slides with the lateral sliding of the positioning mold assembly 30.

[0041] In some embodiments, the pipe clamping and feeding mechanism 16 is provided with a rotating module that drives the pipe to be processed 40 to rotate around an axis.

[0042] In this embodiment of the invention, each mold assembly has multiple layers, and the mold layers are switched by lifting and lowering. For example... Figure 3 As shown, in this embodiment, the left-side contouring mold group 10 includes left-side contouring mold one 11, left-side contouring mold two 12, left-side contouring mold three 13, and left-side contouring mold four 14 stacked sequentially from top to bottom; the right-side contouring mold group 20 includes right-side contouring mold one 21, right-side contouring mold two 22, right-side contouring mold three 23, and right-side contouring mold four 24 stacked sequentially from top to bottom; correspondingly, the positioning mold group 30 includes positioning mold one 31, positioning mold two 32, positioning mold three 33, and positioning mold four 34 stacked sequentially from top to bottom. The left-side contouring mold, right-side contouring mold, and positioning mold in each layer have the same height, and the three work together to clamp and fix the pipe 40 to be processed.

[0043] In this embodiment of the invention, each left-side contouring mold in the left-side contouring mold group 10 is fixedly connected and rotatably connected to a central shaft, which is connected to a rotating structure. Each left-side contouring mold includes a left-side clamping groove 131, which is a semi-circular groove structure with an inner diameter that matches the outer diameter of the pipe 40 to be processed, and anti-slip protrusions are arranged in an array inside the groove.

[0044] Correspondingly, in this embodiment, each right-side contouring mold in the right-side contouring mold group 20 is fixedly connected, and each right-side contouring mold includes a right-side clamping groove 231. The right-side clamping groove 231 is a semi-circular groove structure with an inner diameter that matches the outer diameter of the pipe 40 to be processed, and anti-slip protrusions are arranged in an array inside the groove.

[0045] In this embodiment of the invention, each left-side contour mold and each right-side contour mold correspond one-to-one. The left-side and right-side contour molds in each layer have the same clamping path.

[0046] In the embodiment of the present application, the shapes of the left and right profiled molds of each layer are different, the first layer can adopt a straight clamping channel design, that is, the left clamping groove 131 and the right clamping groove 231 are combined into a straight clamping channel, and from the second layer, the curved clamping channel design with a profiled bending part is adopted layer by layer, that is, the left clamping groove 131 and the right clamping groove 231 are combined into a curved clamping channel, and from the second layer to the fourth layer, the amplitude of the bending increases layer by layer.

[0047] As shown in Figure 4 In the embodiment, the left and right profiled molds of the third layer are taken as an example for description, and the structures of the left and right profiled molds of other layers are similar, and the only difference is the bending degree. Figure 4 In the embodiment, the left and right profiled molds of the third layer are taken as an example for description, and the structures of the left and right profiled molds of other layers are similar, and the only difference is the bending degree.

[0048] In the embodiment, the number of the positioning molds is consistent with the number of the left and right profiled molds, and the positioning molds are lifted and lowered together with the left and right profiled molds, specifically, the positioning mold group 30 includes a positioning mold one 31, a positioning mold two 32, a positioning mold three 33 and a positioning mold four 34, and the four positioning molds are all straight structures, including straight clamping grooves, used for positioning the side of the pipe to be processed 40 from the opposite direction of the bending deformation direction of the pipe to be processed 40 when the left profiled mold group 10 rotates, so as to keep the straight pipe section from being deformed.

[0049] It should be understood that the driving mechanism in the embodiment can be some driving structures or mechanical devices capable of realizing linear motion function / rotary motion / telescopic motion, for example, a stepping motor, a servo motor, a hydraulic cylinder, an electric cylinder, an air cylinder and the like.

[0050] The working principle of the embodiment of the present application is as follows:

[0051] As shown in Figures 5 to 8As shown, first, the pipe to be processed 40 is clamped and fixed in the pipe clamping feeding mechanism 16, at this time, the pipe clamping feeding mechanism 16 is at a certain initial distance from the die set, which can ensure that the pipe segment to be processed 40 to be bent is just between the left profiling die set 10 and the right profiling die set 20 after being clamped, the driving mechanism for controlling the transverse sliding of the left profiling die set 10 and the right profiling die set 20 is started, the left profiling die set 10 and the right profiling die set 20 are moved towards each other, and the pipe to be processed 40 is clamped between the first layer of left profiling die one 11 and right profiling die one 21, at the same time, the positioning die one 31 is positioned from the side, and the clamped state is as shown in Figure 5 As shown.

[0052] The rotating mechanism 9 is controlled to operate, the rotating mechanism 9 drives the left profiling die set 10 and the right profiling die set 20 to rotate simultaneously around the axis of the left profiling die set 10, and the pipe to be processed 40 is bent, the angle of rotation of the rotating mechanism 9 is pre-set according to the bending size, and the state during the bending operation is as shown in Figure 6 As shown.

[0053] After the first bending, the driving mechanism drives the left profiling die set 10 and the right profiling die set 20 to move away from each other, and the pipe to be processed 40 clamped therebetween is released, at this time, the pipe clamping feeding mechanism 16 moves longitudinally under the action of the driving mechanism, and the pipe to be processed 40 is forwarded, and the state is as shown in Figure 7 As shown.

[0054] When the pipe to be processed 40 is sent to the second bending position, the lifting mechanism 15 operates to lift the three die sets upwards, and the height of the left profiling die two 12, the right profiling die two 22 and the positioning die two 32 is consistent with the height of the pipe to be processed 40, at the same time, the pipe clamping feeding mechanism 16 rotates axially to change the bending direction of the pipe to be processed 40, and the final state is as shown in Figure 8 As shown.

[0055] The operation mode of the left profiling die two 12 and the right profiling die two 22 of the second layer is the same as that of the first layer, and the second bending operation can be completed by repeating the above operation. According to the above operation method, the bending operation of the third layer and the fourth layer is completed in turn.

[0056] As can be seen from the above working principle, the multi-layer pipe bending forming equipment of the utility model can complete the bending operation of four steps at one time, and because the profiling bending parts with different bending angles are arranged on each layer of die, the bending forming can be completed at one time, which greatly improves the production efficiency, and at the same time, the product meeting the size and shape requirements can be processed without being limited by the length of the straight section between two bends.

[0057] As Figure 10As shown, the length L2 of the straight section in the processed pipe 50 can be less than the length L1 of the mold, and no bending damage is caused.

[0058] It should be understood that the number of layers of the mold can be reasonably increased or decreased according to the processing needs of the pipe to be processed, and each profiling mold can be disassembled and installed, facilitating replacement. Therefore, the present device can adapt to the processing needs of various different types of pipe fittings.

[0059] The details not described in the present application are conventional technical means known to those skilled in the art.

[0060] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 do not indicate or imply that the device or element 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.

[0061] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A multi-layer pipe bending forming equipment, characterized in that, include: Fixed base (1); The pipe clamping and feeding mechanism (16) moves longitudinally linearly reciprocating on the fixed base (1) to clamp and longitudinally convey the pipe to be processed (40) from the end; The lifting seat (2) is located on the longitudinal side of the fixed base (1). The lifting seat (2) is rotatably connected to the left contour mold group (10) and the right contour mold group (20). The left contour mold group (10) and the right contour mold group (20) can move towards each other to form a clamp from both sides of the pipe to be processed (40), and drive the pipe to be processed (40) to complete the bending during the rotation. The left contour mold group (10) includes multiple left contour molds arranged sequentially from top to bottom. Correspondingly, the right contour mold group (20) includes multiple right contour molds arranged sequentially from top to bottom. The left contour molds of each layer are adapted to the right contour molds, and each layer has contour bending parts with different bending arcs.

2. The multi-layer pipe bending forming equipment according to claim 1, characterized in that, A rotating seat (3) is rotatably connected above the lifting seat (2). The left contour mold group (10) and the right contour mold group (20) are both located above the rotating seat (3). The bottom of the rotating seat (3) is connected to a rotating mechanism (9) and an arc-shaped track.

3. The multi-layer pipe bending forming equipment according to claim 2, characterized in that, The rotating seat (3) is provided with a first slide rail (4) and a second slide rail (6). Multiple right-side contour molds are fixedly connected to the first slide block (5), and the first slide block (5) slides on the first slide rail (4). Multiple left-side contour molds are fixedly connected to the second slide block (7), and the second slide block (7) slides on the second slide rail (6).

4. The multi-layer pipe bending forming equipment according to claim 3, characterized in that, Four right-side contour molds are stacked sequentially on the first slide (5), and correspondingly, four left-side contour molds are stacked sequentially on the second slide (7).

5. The multi-layer pipe bending forming equipment according to claim 4, characterized in that, Each of the four left-side contour molds has a left-side clamping groove (131) on its right side, and each of the four right-side contour molds has a right-side clamping groove (231) on its left side that mates with the left-side clamping groove (131). The left-side clamping groove (131) has an arc-shaped bent inlet on the side closest to the pipe clamping and feeding mechanism (16). The left-side clamping groove (131) on three of the left-side contour molds has a left-side contour bending portion (132) on the side furthest from the pipe clamping and feeding mechanism (16). The right-side clamping groove (231) on the three right-side contour molds has a right-side contour bending portion (232), and the bending paths of the left-side contour bending portion (132) and the right-side contour bending portion (232) are the same. Together, they form a curved clamping channel with a smooth bending transition.

6. The multi-layer pipe bending forming equipment according to claim 5, characterized in that, The curved clamping channel formed by the left clamping groove (131) and the right clamping groove (231) increases in curvature from the second layer to the fourth layer.

7. The multi-layer pipe bending forming equipment according to claim 1, characterized in that, The right-side contour mold group (20) is also provided with a positioning mold group (30) on the side near the pipe clamping and feeding mechanism (16). The positioning mold group (30) includes at least one straight clamping groove.

8. The multi-layer pipe bending forming equipment according to claim 7, characterized in that, The positioning mold group (30) rises and falls synchronously with the left contour mold group (10) and the right contour mold group (20).

9. The multi-layer pipe bending forming equipment according to claim 8, characterized in that, The positioning mold assembly (30) is also provided with a lifting guide seat (35) on one side, and the positioning mold assembly (30) slides on the lifting guide seat (35).

10. The multi-layer pipe bending forming equipment according to claim 1, characterized in that, The pipe clamping and feeding mechanism (16) is provided with a rotating module that drives the pipe to be processed (40) to rotate around an axis.

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