Lubricating-free oil injection elbow pipe device
Through the design of fixed table and rotating table combined with limit assembly, clamping parts and bending die assembly, coreless pipe bending is achieved, which solves the problem of friction damage to pipe fittings, reduces costs and ensures the quality of pipe bending.
Patent Information
- Application Number
- CN202422795997.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-15
AI Technical Summary
In the prior art, during the pipe bending process, friction between the pipe and the mandrel causes damage, requiring oil spray lubrication, which increases costs.
A fixed table and a rotating table are combined with a limit assembly, a clamping piece and a pipe bending die assembly. The pipe fittings are clamped at both ends to avoid core rod friction. A gap is left between the sliding clamping piece and the pipe fitting to achieve core rod-free pipe bending.
The pipe bending cost is reduced, pipe breakage and the use of lubricating oil injection devices are avoided, while the appearance quality of the pipe bending is guaranteed.
Smart Images
Figure CN223405744U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe bending devices, in particular to a lubrication-free oil-spraying pipe bending device. Background Art
[0002] In the prior art, when bending a pipe, a core rod needs to be inserted into the bent pipe for positioning. During the bending process, the pipe fitting will be displaced, resulting in friction between the pipe fitting and the core rod. In order to prevent the pipe fitting from being damaged by friction, oil spray lubrication is required. This requires adding an oil spray lubrication device, which is costly. Utility Model Content
[0003] In order to solve the problem in the prior art that the friction between the pipe fitting and the core rod easily causes damage to the pipe fitting, the utility model provides a lubrication-free oil-spraying pipe bending device with reduced costs.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A lubrication-free oil injection elbow device, comprising:
[0006] Fixed table and rotating table set next to the fixed table:
[0007] A first limiting assembly, the first limiting assembly comprising a base slidably arranged on a fixed platform, a limiting core tube mounted on the base, the limiting core tube being inserted into the first end of the pipe to be inserted, and the limiting core tube having a step for being clamped on the end surface of the first end of the pipe;
[0008] A fixed clamping member, wherein the fixed clamping member is arranged at a position close to the first limiting assembly;
[0009] A sliding clamping member, wherein the sliding clamping member is slidably arranged on the workbench and is arranged opposite to the fixed clamping member;
[0010] A pipe bending die assembly is mounted on a rotating platform and includes an inner bending die embedded with a fixed clamp and an outer bending die opposite to the inner bending die;
[0011] The second limiting assembly is mounted on the rotating platform and includes a telescopic limiting rod for inserting into the second end of the pipe.
[0012] Furthermore, the fixed clamping member is provided with a first clamping groove, the sliding clamping member is provided with a second clamping groove, the inner bending mold is provided with a third clamping groove docking with the first clamping groove, and the outer bending mold is provided with a fourth clamping groove. The first clamping groove, the third clamping groove and the fourth clamping groove match the shape of the pipe fitting, and a gap is left between the second clamping groove and the pipe fitting.
[0013] Furthermore, the pipe fitting is a round pipe, the second clamping groove is a V-shaped clamping groove, and the first clamping groove, the third clamping groove and the fourth clamping groove are all semicircular clamping grooves.
[0014] Furthermore, the limiting core tube is rotatably arranged on the base.
[0015] Furthermore, the base is provided with a rotating shaft, and the position limiting core tube is fixedly connected to the rotating shaft, preferably in a detachable fixed connection so that the position limiting core tube can be replaced.
[0016] Furthermore, a side connecting plate is fixed on the rotating table, a cylinder is fixed on the side connecting plate, and the telescopic limiting rod is fixedly connected to the piston rod of the cylinder.
[0017] Furthermore, the second end of the pipe has a first convex ring, and the first convex ring is clamped on the outer sides of the inner bend mold and the outer bend mold.
[0018] Furthermore, the pipe fitting has a second convex ring near the second end, and the inner bending mold and the outer bending mold are respectively provided with a first avoidance groove and a second avoidance groove corresponding to the position of the second convex ring, and the width of the first avoidance groove and the second avoidance groove are both greater than the width of the second convex ring.
[0019] Beneficial effects:
[0020] (1) The lubrication-free oil injection bending device of the utility model does not use a core rod, but adopts a limit method at both ends. In this way, the pipe fitting will not be broken due to excessive friction between the core rod and the pipe fitting, and the lubrication oil injection device to prevent the pipe fitting from breaking is omitted, which is low in cost;
[0021] (2) In addition, a gap is left between the sliding clamp and the pipe, which can achieve the function of clamping the pipe while not crushing the pipe, thereby achieving a qualified appearance of the bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0023] Figure 1 This is a top view schematic diagram of the state of each clamping member clamping the pipe before bending the pipe;
[0024] Figure 2 This is a three-dimensional schematic diagram of the state of each clamping member clamping the pipe before bending the pipe;
[0025] Figure 3It is a top view schematic diagram of the state of each clamping member clamping the pipe after the pipe is bent;
[0026] Figure 4 It is a three-dimensional schematic diagram of the state of each clamping member clamping the pipe after the pipe is bent;
[0027] Figure 5 This is a schematic diagram of the structure of the pipe before it is bent;
[0028] Figure 6 This is a schematic diagram of the structure of the pipe after being bent;
[0029] Figure 7 It is a structural diagram of the limiting core tube;
[0030] Figure 8 is a schematic diagram of the structure of the fixed clamping member;
[0031] Figure 9 It is a structural diagram of a sliding clamping member;
[0032] Figure 10 Schematic diagram of the structure of the inner bending die;
[0033] Figure 11 This is a structural diagram of the external bending mold.
[0034] 1. Fixed table, 2. Rotating table, 3. First limiting assembly, 31. Base, 311. Rotating shaft, 32. Limiting core tube, 321. Step, 4. Fixed clamping member, 41. First clamping groove, 5. Sliding clamping member, 51. Second clamping groove, 6. Bending die assembly, 61. Inner bending die, 611. Third clamping groove, 612. First avoidance groove, 62. Outer bending die, 621. Fourth clamping groove, 622. Second avoidance groove, 7. Second limiting assembly, 71. Telescopic limiting rod, 72. Cylinder, 8. Pipe fitting, 81. First convex ring, 82. Second convex ring. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0037] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0038] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0040] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.
[0041] like Figures 1 to 11 , a lubrication-free oil injection pipe bending device, comprising a fixed platform 1 and a rotating platform 2 arranged next to the fixed platform 1, a first limiting assembly 3, a fixed clamping member 4, a sliding clamping member 5, a pipe bending die assembly 6 and a second limiting assembly 7: the first limiting assembly 3 includes a base 31 slidably arranged on the fixed platform 1, and the base 31 slides along the X direction and the Y direction (movement can be achieved by an XY linear module), a limiting core tube 32 is installed on the base 31, the limiting core tube 32 is inserted into the first end of the pipe 8 to be fixed, and the limiting core tube 32 has a step 321 for clamping on the end surface of the first end of the pipe 8; the fixed clamping member 4 is arranged at a position close to the first limiting assembly 3, and the fixed clamping member 4 is provided with a first clamping groove 41; the sliding clamping member 5 is slidably arranged on the workbench at least along the Y direction, the sliding clamping member 5 is arranged opposite the fixed clamping member 4, and the sliding clamping member 5 is provided with a second clamping groove 51, and a gap is left between the second clamping groove 51 and the pipe 8. The sliding clamping member 5 also slides along the X direction and the Y direction. In this utility model, a sliding seat is further included. The sliding seat is slidably arranged on the fixed platform 1 along the X direction (which can be achieved by a linear module, etc.) to achieve the clamping of the pipe 8 by the sliding clamping member 5. The sliding clamping member 5 is slidably arranged on the sliding seat along the X direction. Specifically, a guide mechanism such as a roller can be set between the sliding seat and the sliding clamping member 5. A reset mechanism such as a spring is also installed in the sliding seat to achieve the reset of the sliding clamping member 5.
[0042] The pipe bending die assembly 6 is mounted on the rotating table 2. The pipe bending die assembly 6 includes an inner bending die 61 embedded in the fixed clamping member 4 and an outer bending die 62 disposed opposite the inner bending die 61. The inner bending die 61 is provided with a third clamping groove 611 that abuts the first clamping groove 41, and the outer bending die 62 is provided with a fourth clamping groove 621. In the present invention, the sliding clamping member 5 and the outer bending die 62 are configured to slide to clamp the pipe 8.
[0043] As an embodiment of the present invention, the pipe 8 is a round pipe, the second clamping groove 51 is a V-shaped clamping groove, and the first clamping groove 41, the third clamping groove 611 and the fourth clamping groove 621 are all semicircular clamping grooves.
[0044] The second limiting assembly 7 is mounted on the rotating platform 2 , and the second limiting assembly 7 includes a telescopic limiting rod 71 for inserting into the second end of the pipe 8 .
[0045] The limiting core tube 32 is rotatably mounted on the base 31. Specifically, a rotating shaft 311 is provided on the base 31, and the limiting core tube 32 is fixedly connected to the rotating shaft 311. This allows the tube to be rotated 90 degrees after bending. The robot arm inserts the inflatable shaft into the inner wall of the bent tube to pick it up, facilitating robot gripping without causing scratches or other damage to the outer wall of the bent tube.
[0046] A side connecting plate is fixed on the rotating platform 2 , a cylinder 72 is fixed on the side connecting plate, and the telescopic limiting rod 71 is fixedly connected to the piston rod of the cylinder 72 .
[0047] The second end of the pipe 8 has a first raised ring 81, which is engaged with the outside of the inner bend die 61 and the outer bend die 62. Near the second end of the pipe 8, a second raised ring 82 is provided. The inner bend die 61 and the outer bend die 62 are respectively provided with a first avoidance groove 612 and a second avoidance groove 622 corresponding to the position of the second raised ring 82. The width of each of the first avoidance groove 612 and the second avoidance groove 622 is greater than the width of the second raised ring 82.
[0048] The lubrication-free oil-spraying pipe bending device of the utility model can be arranged in the pipe bending process of a fully automatic production line, and cooperates with a manipulator to perform loading and unloading to realize automatic pipe bending.
[0049] Working process:
[0050] The pipe 8 to be bent is manually or mechanically positioned on the limiting core tube 32, with the step 321 resting against the first end of the pipe 8. The base 31 then moves in the X and Y directions, bringing the pipe 8 into close contact with the first clamping groove 41 of the fixed clamp 4 and the third clamping groove 611 of the inner bend die 61. The sliding clamp 5 then moves toward the fixed clamp 4, and the outer bend die 62 moves toward the inner bend die 61, clamping the pipe 8. The cylinder 72 drives the telescopic limiting rod 71 to extend into the second end of the pipe 8. The insertion depth of the limiting core tube 32 and the telescopic limiting rod 71 does not affect the bending process. The rotating table 2 then rotates 90 degrees, and the inner bend die 61 and outer bend die 62 rotate 90 degrees accordingly to achieve the bending process. During this process, the base 31 advances in the Y direction, while the sliding clamp 5 slides along the Y direction following the pipe 8. After the pipe bending is completed, the outer bending die 62 and the sliding clamp 5 release the pipe. At the same time, the sliding clamp 5 is reset, and the cylinder 72 drives the telescopic limit rod 71 to be pulled out of the pipe 8. Then the base 31 first moves a short distance in the Y direction, and then moves a distance in the X direction. Then the rotating shaft 311 rotates 90 degrees, so that the second end of the bent pipe 8 faces upward, and the bent pipe is taken up manually or by a robot. Preferably, a robot is used to take the bent pipe, and the robot has an inflatable shaft. The inflatable shaft extends into the second end of the bent pipe and stretches it open. Then the robot moves in the X direction to remove the bent pipe from the limiting core tube 32 and take it away, completing the blanking of the bent pipe, and then the next pipe 8 is bent.
[0051] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.
Claims
1. A lubrication-free oil injection elbow device, characterized in that: include: A fixed platform (1) and a rotating platform (2) arranged next to the fixed platform (1): A first limiting assembly (3), the first limiting assembly (3) comprising a base (31) slidably arranged on the fixed platform (1), a limiting core tube (32) being installed on the base (31), the limiting core tube (32) being inserted into the first end of the pipe (8) to be inserted, and the limiting core tube (32) having a step (321) for being clamped on the end surface of the first end of the pipe (8); A fixed clamping member (4), wherein the fixed clamping member (4) is arranged at a position close to the first limiting component (3); A sliding clamping member, wherein the sliding clamping member (5) is slidably arranged on the workbench, and the sliding clamping member (5) is arranged opposite to the fixed clamping member (4); A pipe bending die assembly (6), wherein the pipe bending die assembly (6) is mounted on a rotating platform (2), and the pipe bending die assembly (6) comprises an inner bending die (61) embedded with a fixed clamping member (4) and an outer bending die (62) disposed opposite to the inner bending die (61); A second limiting assembly (7), wherein the second limiting assembly (7) is mounted on the rotating platform (2), and the second limiting assembly (7) comprises a telescopic limiting rod (71) for inserting into the second end of the pipe (8).
2. The lubrication-free oil injection elbow device according to claim 1, characterized in that: The fixed clamping member (4) is provided with a first clamping groove (41), the sliding clamping member (5) is provided with a second clamping groove (51), the inner bending die (61) is provided with a third clamping groove (611) docking with the first clamping groove (41), and the outer bending die (62) is provided with a fourth clamping groove (621). The first clamping groove (41), the third clamping groove (611) and the fourth clamping groove (621) match the shape of the pipe fitting (8), and a gap is left between the second clamping groove (51) and the pipe fitting (8).
3. The lubrication-free oil injection elbow device according to claim 2, characterized in that: The pipe (8) is a round pipe, the second clamping groove (51) is a V-shaped clamping groove, and the first clamping groove (41), the third clamping groove (611) and the fourth clamping groove (621) are all semicircular clamping grooves.
4. The lubrication-free oil injection elbow device according to claim 1, characterized in that: The position-limiting core tube (32) is rotatably arranged on the base (31).
5. The lubrication-free oil injection elbow device according to claim 3, characterized in that: The base (31) is provided with a rotating shaft (311), and the limiting core tube (32) is fixedly connected to the rotating shaft (311).
6. The lubrication-free oil injection elbow device according to claim 3, characterized in that: A side connecting plate is fixed on the rotating platform (2), a cylinder (72) is fixed on the side connecting plate, and the telescopic limiting rod (71) is fixedly connected to the piston rod of the cylinder (72).
7. The lubrication-free oil injection elbow device according to claim 3, characterized in that: The second end of the pipe (8) has a first convex ring (81), and the first convex ring (81) is clamped on the outer sides of the inner bending die (61) and the outer bending die (62).
8. The lubrication-free oil injection elbow device according to claim 3, characterized in that: The pipe (8) has a second convex ring (82) at a position close to the second end, and the inner bending die (61) and the outer bending die (62) are respectively provided with a first avoidance groove (612) and a second avoidance groove (622) corresponding to the position of the second convex ring (82), and the width of the first avoidance groove (612) and the second avoidance groove (622) are both greater than the width of the second convex ring (82).