Pipe fitting bending mechanism

Abstract

The utility model relates to a pipe fitting bending mechanism which comprises a body, a pair of sinking grooves are symmetrically formed in the two sides of the body, and a first positioning groove and a second positioning groove which are arranged separately penetrate through the sinking grooves. A guide groove is formed in the outer wall, opposite to the sinking groove side, of the body, the end of the guide groove is connected with a fixing block, and a pipe fitting insertion positioning space is formed. An opening is formed in the lower portion of the handle, the opening is correspondingly inserted into the sinking groove, and the handle can move in the first positioning groove through a first positioning shaft and can move in the second positioning groove through a second positioning shaft; the top of the opening is rotationally connected with a rolling groove structure enabling the pipe fitting to be bent along the guide groove. By designing the first positioning groove, the second positioning groove, the corresponding first positioning shaft and the corresponding second positioning shaft, it is ensured that the handle can accurately move along a preset track when moving. The accurate control reduces positioning errors caused by multiple times of clamping, and therefore the machining accuracy of bending of the bent pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe bending processing, and more specifically, to a pipe fitting bending mechanism. Background Art

[0002] In the traditional pipe fitting bending process, especially when dealing with complex shapes involving multiple R corners (round corners), it is usually necessary to use bending tooling for multiple bending operations. Although this step-by-step processing method seems simple in a single process, there are actually some defects:

[0003] After each bending, the pipe fitting needs to be removed from the tooling and repositioned for the next bending. The repeated clamping and positioning in this process are prone to introducing errors. Even with high-precision positioning equipment, tiny errors will accumulate during multiple operations, ultimately affecting the overall dimensional accuracy of the product. Multi-process processing not only affects product quality but also reduces production efficiency. The re-clamping and positioning after each bending require time and labor, increasing the production cycle and cost. During the multi-process bending, each bending may cause a slight change to the arc tangent point of the previous bending. These changes may be amplified in subsequent processes, resulting in an unsmooth arc connection in the final product, with obvious straight segments or unnatural curve transitions, affecting aesthetics and functionality, and even being judged unqualified due to not meeting the design requirements, increasing the scrap rate and cost.

[0004] Therefore, how to provide a pipe fitting bending mechanism is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] For this reason, the purpose of the present utility model is to propose a pipe fitting bending mechanism, aiming to solve problems such as multiple clamping and positioning errors and product up-and-down difference fluctuations existing in the traditional multi-process bending of pipe fittings.

[0006] The technical solution of the present utility model is a pipe fitting bending mechanism, including:

[0007] A body, on both sides of the body, a pair of sunk grooves are symmetrically opened. A first positioning groove and a second positioning groove are arranged separately and penetrate through the sunk grooves. On the outer wall of the body on the side opposite to the sunk grooves, there is a guiding groove;

[0008] A fixed block, the end of the guiding groove is connected with the fixed block, and a pipe fitting insertion and positioning space is formed;

[0009] A handle, an opening is formed at the lower part of the handle. The opening corresponds to be inserted into the sunk groove, and can move in the first positioning groove through a first positioning shaft and can move in the second positioning groove through a second positioning shaft; a rolling groove structure for bending the pipe fitting along the guiding groove is rotatably connected to the top of the opening.

[0010] According to the technical solution of the present utility model, the body is plate-shaped, and a holding groove is provided on the side opposite to the advancing direction of the handle.

[0011] According to the technical solution of the present utility model, the opening width of the handle is the same as the thickness of the sunk groove. Fixing holes for correspondingly installing the first positioning shaft and the second positioning shaft are provided at the lower end of the opening. A pin hole for installing a pin shaft is provided at the top of the opening, and the rolling groove structure is rotatably provided on the outer wall of the pin shaft.

[0012] According to the technical solution of the present utility model, the rolling groove structure is a bearing, and a profiling arc groove is provided on its outer peripheral wall.

[0013] According to the technical solution of the present utility model, the guiding groove is a profiling design, and a positioning portion is provided inside the positioning space.

[0014] According to the technical solution of the present utility model, the positioning portion is a cylinder with an inclined surface and is fixed at the end of the guiding groove.

[0015] According to the technical solution of the present utility model, a positioning plane is provided at the guiding groove near the fixed block.

[0016] According to the technical solution of the present utility model, the sunk groove is a sector structure.

[0017] According to the technical solution of the present utility model, the first positioning shaft is the fulcrum of the first arc formed by bending a pipe fitting. The groove type of the first positioning groove meets the forming requirements of the first arc and provides a moving space for the first positioning shaft; the second positioning shaft is the fulcrum of the second arc formed by bending a pipe fitting. The groove type of the second positioning groove meets the forming requirements of the second arc and provides a moving space for the second positioning shaft; the initial positions of the first positioning shaft and the second positioning shaft are staggered.

[0018] It can be seen from the above technical solutions that, compared with the prior art, the present utility model has the following beneficial effects:

[0019] By designing the first positioning groove, the second positioning groove, and the corresponding first positioning shaft and second positioning shaft, the present utility model ensures that the handle can move precisely along a predetermined trajectory when moving. This precise control reduces the positioning error caused by multiple clamping, thereby improving the processing accuracy of pipe bending.

[0020] The present utility model can complete the bending of two R corners at one time, thus reducing the multiple clamping and bending processes required in traditional processing. This not only improves production efficiency but also reduces the errors introduced by multiple operations.

[0021] Through one-time precise bending, problems such as changes in the arc tangent point and fluctuations in the up-and-down difference caused by multiple bendings are avoided. Each part of the product can maintain high consistency, thereby improving the quality and qualification rate of the product.

[0022] For the operator of the utility model, just hold the body by hand, place the pipe fitting in the guiding groove, and the bending operation can be completed by moving the handle. This design simplifies the operation process, reduces the requirements for the operator's skills, and alleviates the labor intensity.

[0023] The design of the handle and the rolling groove structure of the utility model takes into account the safety of the operator, ensuring that the operator's hands are far away from the dangerous area during the bending process and reducing the operation risk.

[0024] The design of the fan-shaped sunken groove makes reasonable use of space, making the entire mechanism more compact, occupying less space, and facilitating installation and use in various workplaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0026] Figure 1 FIG. 1 is a schematic structural diagram of a pipe fitting bending mechanism provided by the present utility model;

[0027] Figure 2 FIG. 2 is a schematic structural diagram after removing the handle;

[0028] Figure 3 FIG. 3 shows a schematic structural diagram of the body;

[0029] Figure 4 FIG. 4 is an enlarged schematic diagram of the guiding groove part;

[0030] Figure 5 FIG. 5 shows a front view of the body;

[0031] Figure 6 FIG. 6 shows a schematic structural diagram of the insertion end of the pipe fitting. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where 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 with reference to the drawings are exemplary and are intended to explain the present utility model, but should not be construed as limiting the present utility model.

[0033] Due to the existing pipe fittings, especially the pipe fittings of medical devices, during the bending process, multiple bending operations are performed using a bending tooling. After each bending, the pipe fitting needs to be removed from the tooling and repositioned for the next bending. The repeated clamping and positioning in this process are likely to introduce errors and even produce unqualified products. In view of this, the technical solution of the present utility model is a pipe fitting bending mechanism. Taking the continuous bending of two arcs as an example, refer to the attached Figures 1-6 , including:

[0034] A body 1, the body 1 can be a plate-like structure. A pair of fan-shaped sunk grooves 105 are symmetrically formed on both side surfaces of the body 1. A first positioning groove 104 and a second positioning groove 103 which are separately arranged penetrate through the sunk groove 105. A guiding groove 101 is provided on the outer wall of the body 1 on the side opposite to the sunk groove 105;

[0035] A fixing block 2, the end of the guiding groove 101 is connected with the fixing block 2 and forms a positioning space for inserting the pipe fitting 7; wherein the fixing block 2 can be buckled with the top of the body 1 to form a positioning space;

[0036] A handle 3, the handle 3 is a rod-shaped structure, an opening is formed at its lower part, the opening corresponds to be inserted into the sunk groove 105, the width of the opening is the same as the thickness of the sunk groove 105, and it can move in the first positioning groove 104 through a first positioning shaft 601 and can move in the second positioning groove 103 through a second positioning shaft 602; a rolling groove structure 4 for bending the pipe fitting 7 along the guiding groove 101 is rotatably connected to the top of the opening.

[0037] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0038] Wherein, the first positioning shaft 601 is the fulcrum for the pipe fitting 7 to bend and form the first arc, the groove type of the first positioning groove 104 meets the forming requirements of the first arc and provides a moving space for the first positioning shaft 601; the second positioning shaft 602 is the fulcrum for the pipe fitting 7 to bend and form the second arc, the groove type of the second positioning groove 103 meets the forming requirements of the second arc and provides a moving space for the second positioning shaft 602; that is to say, both the second positioning groove 103 and the first positioning groove 104 are irregular groove types, and the groove type structure is designed according to the design requirements.

[0039] The initial positions of the first positioning shaft 601 and the second positioning shaft 602 are staggered, refer to the attached Figure 5It can be understood that the initial position of the first positioning axis 601 is located on the left side of the first positioning groove 104, and the initial position of the second positioning axis 602 is located on the right side of the second positioning groove 103. As the handle 3 is pressed downward to bend the pipe 7 inserted into the positioning space, the first positioning axis 601 is first used as a fulcrum, and the second positioning axis 602 rotates and moves from right to left in the second positioning groove 103, and the first arc of the pipe 7 is bent to the approximately middle position of the second positioning groove 103. At the transition point between the first arc and the second arc, the second positioning axis 602 is used as a fulcrum again, and the first positioning axis 601 rotates and moves from left to right in the first positioning groove 104 approximately to the rightmost side, completing the bending of the second arc. The two positioning grooves make the entire bending process a smooth transition.

[0040] The groove shapes of the two positioning grooves can be set to be circles with different diameters on the left and arcs with different diameters on the right. The arc segments and the full circle segments have smooth transitions, and the arc directions of the arc segments of the two positioning grooves are opposite.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Advantageously, the body 1 is in the shape of a plate, and a gripping groove is provided on the side opposite to the travel direction of the handle 3, so that when the pipe is positioned, it is convenient for the operator to manipulate it.

[0043] In an embodiment of the utility model, the opening width of the handle 3 is consistent with the thickness of the sink 105, and the lower end of the opening is provided with fixing holes corresponding to the installation of the first positioning axis 601 and the second positioning axis 602. The top of the opening has a pin hole for installing the pin shaft 5, and the rolling groove structure 4 is rotated on the outer wall of the pin shaft 5.

[0044] The rolling groove structure 4 is a bearing, and has a contoured arc groove on its outer peripheral wall, which is convenient for the extruded pipe to bend along the guide groove. The groove shape of the guide groove 101 is a contoured design, and a positioning part is arranged inside the positioning space. The space formed by the arc groove and the guide groove 101 has the function of limiting the displacement of the pipe 7.

[0045] In the embodiment of the utility model, the positioning part is a cylinder with an inclined surface, and is welded to the end of the guide groove 101. The end of the pipe 7 is formed with an inclined opening 701 that matches the inclined cylinder, and a long notch 702 is formed at the rear of the inclined opening 701. This facilitates the positioning of the end of the pipe.

[0046] Advantageously, the guiding groove 101 has a positioning plane 102 near the fixed block 2 and cooperating with the long strip notch 702, facilitating the precise positioning of the pipe fitting structure.

[0047] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "coupling", "fixing", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] The sunken groove 105 is of a fan-shaped structure, which is opened inward in the body and forms a side edge 106 beside it.

[0049] During use, the inclined opening 701 of the pipe fitting 7 is correspondingly inserted onto the cylinder on the inclined plane in the positioning space, and the long strip notch 702 and the positioning plane 102 are positioned. Then, the handle 3 is rotated towards the holding groove side by hand. First, with the first positioning shaft 601 as the fulcrum, the second positioning shaft 602 rotates and moves from right to left in the second positioning groove 103 until the first arc of the pipe fitting 7 is bent at approximately the middle position of the second positioning groove 103. At the transition between the first arc and the second arc of the pipe fitting 7, the second positioning shaft 602 is used as the fulcrum again, and the first positioning shaft 601 rotates and moves from left to right in the first positioning groove 104 to approximately the rightmost side, completing the bending of the second arc of the pipe fitting 7. The handle 3 stops when it contacts the side edge 106. When the handle 3 is rotated towards the starting position, the bent pipe fitting can be taken out.

[0050] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0051] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A pipe fitting bending mechanism, characterized in that, Comprising: A body (1), on both sides of the body (1), a pair of counterbores (105) are symmetrically arranged, a first positioning groove (104) and a second positioning groove (103) which are separately arranged penetrate through the counterbores (105), and a guiding groove (101) is formed on the outer wall of the body (1) on the side opposite to the counterbores (105); A fixing block (2), the end of the guiding groove (101) is connected with the fixing block (2) and forms a positioning space for inserting a pipe fitting (7); A handle (3), an opening is formed at the lower part of the handle (3), the opening correspondingly inserts into the counterbore (105), and can move in the first positioning groove (104) through a first positioning shaft (601) and can move in the second positioning groove (103) through a second positioning shaft (602); a rolling groove structure (4) for bending the pipe fitting along the guiding groove (101) is rotatably connected to the top of the opening.

2. The pipe fitting bending mechanism according to claim 1, characterized in that, The body (1) is plate-shaped, and a holding groove is arranged on the side of the body (1) opposite to the advancing direction of the handle (3).

3. The pipe fitting bending mechanism according to claim 1, characterized in that, The width of the opening of the handle (3) is the same as the thickness of the counterbore (105), fixing holes for correspondingly installing the first positioning shaft (601) and the second positioning shaft (602) are arranged at the lower end of the opening, a pin hole for installing a pin shaft (5) is arranged at the top of the opening, and the rolling groove structure (4) is rotatably arranged on the outer wall of the pin shaft (5).

4. A pipe fitting bending mechanism according to claim 1, characterized in that, The rolling groove structure (4) is a bearing, and a profiling arc groove is formed on the outer peripheral wall thereof.

5. A pipe fitting bending mechanism according to claim 4, characterized in that, The guiding groove (101) is of a profiling design, and a positioning part is arranged inside the positioning space.

6. The pipe fitting bending mechanism according to claim 5, wherein, The positioning part is a cylinder with an inclined surface and is fixed at the end of the guiding groove (101).

7. The tube bending mechanism according to claim 6, characterized in that, The guiding groove (101) has a positioning plane (102) near the fixing block (2).

8. A pipe fitting bending mechanism according to claim 1, characterized in that, The counterbore (105) is of a sector structure.

9. A pipe fitting bending mechanism according to claim 7, characterized in that, The first positioning shaft (601) is the fulcrum for bending the first arc of the pipe fitting (7) into shape, the groove type of the first positioning groove (104) meets the forming requirements of the first arc and provides a moving space for the first positioning shaft (601); the second positioning shaft (602) is the fulcrum for bending the second arc of the pipe fitting (7) into shape, the groove type of the second positioning groove (103) meets the forming requirements of the second arc and provides a moving space for the second positioning shaft (602); the initial positions of the first positioning shaft (601) and the second positioning shaft (602) are staggeredly distributed.

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