A bending fixture and method for multi-spatial angle air pipe

Abstract

The present invention belongs to the field of mechanical processing technology, and discloses a bending fixture for a multi-space angle trachea, comprising a bottom plate, a vertical side plate, an inclined side plate, a fixed pin and a movable mold assembly; the vertical side plate and the inclined side plate are detachably mounted in the middle and upper left of the bottom plate; at least two positioning holes are provided on the bottom plate, the vertical side plate and the inclined side plate, the outer diameter of the fixed pin matches the inner diameter of the positioning hole, and after all the positioning holes of the fixed pin are inserted into the fixed pin, all the fixed pins form a bending path for the trachea; the movable mold assembly rotates around the fixed pin to bend the trachea. The present invention can quickly and stably complete the fixing and bending of the trachea workpiece, and after completing one step of bending, the next step can be performed, and the bending situation can be intuitively reflected. At the same time, the bottom plate, the vertical side plate and the side plate are used to ensure that the bending action of the trachea is performed on a plane, and the bending of the trachea is accurate and reliable, thereby avoiding the angle deviation caused by manual bending.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and relates to a trachea bending fixture and a use method, and specifically to a trachea bending fixture and a method for multiple spatial angles. Background Art

[0002] In some special products and equipment, some air pipe components with spatial angles are often used. In order to better arrange and fix some air pipe components, it is necessary to bend the air pipe workpiece at multiple angles to meet the design requirements. However, when bending the air pipe with angles, the operator usually fixes the air pipe workpiece on the operating platform and completes the bending of the air pipe workpiece by adjusting the gasket angle. This method will greatly increase the difficulty of the operator's operation, and requires the air pipe to apply force, which is difficult to fix and will affect the accuracy of the air pipe bending. It is difficult to ensure that the angle after bending meets the requirements of the drawing, thereby reducing the bending quality of the air pipe. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a multi-spatial angle trachea bending fixture and method, which can not only quickly and stably complete the fixation and bending of the trachea workpiece, but also intuitively reflect the bending situation.

[0004] The technical solution of the present invention is as follows:

[0005] A bending fixture for a multi-spatial-angle air pipe comprises a bottom plate, a vertical side plate, an inclined side plate, a fixed latch and a movable mold assembly; the vertical side plate and the inclined side plate are detachably mounted in the middle and upper left side of the bottom plate; the bottom plate, the vertical side plate and the inclined side plate are each provided with at least two positioning holes, the outer diameter of the fixed latch matches the inner diameter of the positioning hole, and after all the positioning holes of the fixed latch are inserted with the fixed latch, all the fixed latches form a bending path for the air pipe; the movable mold assembly rotates around the fixed latch to bend the air pipe.

[0006] Furthermore, the positioning holes of the vertical side panels and the positioning holes of the bottom panel are perpendicular to each other, and the positioning holes of the oblique side panels and the positioning holes of the bottom panel have an angle greater than 0° and less than 90°.

[0007] Furthermore, the movable mold assembly includes a connecting plate, a rotating shaft, a bearing and a movable mold. A pin hole of the same size as the positioning hole is provided at one end of the connecting plate, and a rotating shaft hole is provided at the other end of the connecting plate. The rotating shaft is inserted into the rotating shaft hole from the bottom of the connecting plate, and the rotating shaft extends out of the bottom of the connecting plate. A bearing is provided outside the extended part of the rotating shaft, and a movable mold is mounted outside the bearing. The outer ring of the movable mold is a concave arc corresponding to the shape of the trachea.

[0008] Furthermore, the movable mold assembly also includes a handle, which is detachably mounted on one end of the connecting plate close to the rotating shaft hole.

[0009] Furthermore, it also includes a fixed mold, which is sleeved outside the fixed pin, and the outer ring of the fixed mold is a concave arc corresponding to the shape of the trachea.

[0010] Furthermore, different movable mold assemblies are provided corresponding to different air pipe sections, the spacings between the rotating shaft holes and the latch holes of different movable mold assemblies are different, and the outer diameters of the movable molds of different movable mold assemblies are different.

[0011] A method for bending a multi-space-angle air pipe, using the aforementioned multi-space-angle air pipe bending fixture, comprises the following steps:

[0012] S1, install the fixing pin on the rightmost positioning hole of the bottom plate;

[0013] S2, place the unbent air pipe on the bottom plate, with the right side of the air pipe in contact with the fixing pin, and the rightmost part of the air pipe to be bent tangent to the second positioning hole on the left side of the bottom plate;

[0014] S3, installing a fixing pin on each second positioning hole on the right side of the bottom plate, and then installing a movable mold assembly on the second installed fixing pin;

[0015] S4, rotating the movable mold assembly to complete the processing of the first bend on the far right of the air pipe;

[0016] S5, remove the movable mold assembly and retain the second installed fixing pin;

[0017] S6, and so on, repeat the steps from S3 to S5; complete the bending processing of all the positioning holes on the bottom plate corresponding to the air pipe from right to left.

[0018] Furthermore, it also includes:

[0019] S7, remove the air pipe, install the vertical side plate or the oblique side plate on the bottom plate, then put the air pipe back, and repeat S3 to S5, where the bottom plate in S3 to S5 becomes the vertical side plate or the oblique side plate, and complete the bending process of all the positioning holes on the vertical side plate or the oblique side plate corresponding to the air pipe from right to left.

[0020] Furthermore, it also includes:

[0021] S8, repeat S7 until the bending process of all the positioning holes of all the vertical side panels and the inclined side panels corresponding to the air pipe is completed.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention can quickly and stably complete the fixing and bending of the trachea workpiece through the bottom plate, the vertical side plate, the inclined side plate, the fixed mold, the fixing screws, the fixing pins and the movable mold assembly, the movable mold assembly and the like.

[0024] 2. The present invention completes one bending step before proceeding to the next step, which can intuitively reflect the bending situation. Each bending operation has the next positioning hole as a reference for the bending angle. It only needs to ensure that the trachea is tangent to the next positioning hole after bending. At the same time, the bottom plate, vertical side plate and side plate are used to ensure that the bending action of the trachea is carried out on a plane, thereby ensuring that the bending of the trachea is accurate and reliable, thereby avoiding the angle deviation caused by manual bending, reducing the movement of the trachea workpiece, reducing the time of using the adjusting gasket, improving the bending quality, and improving the bending qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the implementation method of the patent of the present invention, the following is a brief introduction to the drawings required for use in the implementation method. It should be understood that the following drawings only show certain embodiments of the patent of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a bending fixture for a multi-space angle air pipe.

[0027] Figure 2 yes Figure 1 Top view of the .

[0028] Figure 3 yes Figure 1 Bottom view of .

[0029] Figure 4 yes Figure 1 Right view of .

[0030] Figure 5 It is an axonometric schematic diagram of the bending fixture for multi-spatial angle air pipes of the present invention.

[0031] Among them: 1-bottom plate, 2-vertical side plate, 3-46.5° side plate, 4-27 movable mold assembly, 5-fixing pin, 6-fixed mold, 7-29 movable mold assembly, 8-fixing screws. DETAILED DESCRIPTION

[0032] This section is an embodiment of the present invention, which is used to explain and illustrate the technical solution of the present invention. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the orientations or positional relationships in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or case referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or a point connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0035] Embodiment 1:

[0036] A bending fixture for a multi-spatial-angle air pipe comprises a bottom plate 1, a vertical side plate 2, an oblique side plate 3, a fixed latch 5 and a movable mold assembly; the vertical side plate 2 and the oblique side plate 3 are detachably mounted in the middle and upper left side of the bottom plate 1; at least two positioning holes are provided on the bottom plate 1, the vertical side plate 2 and the oblique side plate 3, the outer diameter of the fixed latch 5 matches the inner diameter of the positioning hole, and after all the positioning holes of the fixed latch 5 are inserted into the fixed latch 5, all the fixed latches 5 form a bending path for the air pipe; the movable mold assembly rotates around the fixed latch 5 to bend the air pipe.

[0037] The positioning holes of the vertical side plate 2 and the positioning holes of the bottom plate 1 are perpendicular to each other, and the positioning holes of the oblique side plate 3 and the positioning holes of the bottom plate 1 have an angle greater than 0° and less than 90°.

[0038] The movable mold assembly includes a connecting plate, a rotating shaft, a bearing and a movable mold. A pin hole of the same size as the positioning hole is provided at one end of the connecting plate, and a rotating shaft hole is provided at the other end of the connecting plate. The rotating shaft is inserted into the rotating shaft hole from the bottom of the connecting plate. The rotating shaft extends out of the bottom of the connecting plate. A bearing is provided outside the extended part of the rotating shaft. The movable mold is mounted outside the bearing. The outer ring of the movable mold is a concave arc corresponding to the shape of the trachea.

[0039] The movable mold assembly also includes a handle, which is detachably mounted on one end of the connecting plate close to the rotating shaft hole.

[0040] The fixed mold 6 is also included. The fixed mold 6 is sleeved outside the fixed pin 5, and the outer ring of the fixed mold 6 is a concave arc corresponding to the shape of the trachea.

[0041] Different movable mold assemblies are provided corresponding to different air pipe sections, the spacings between the rotating shaft holes and the latch holes of different movable mold assemblies are different, and the outer diameters of the movable molds of different movable mold assemblies are different.

[0042] A method for bending a multi-space-angle air pipe, using the aforementioned multi-space-angle air pipe bending fixture, comprises the following steps:

[0043] S1, install the fixing pin on the rightmost positioning hole of the bottom plate;

[0044] S2, place the unbent air pipe on the bottom plate, with the right side of the air pipe in contact with the fixing pin, and the rightmost part of the air pipe to be bent tangent to the second positioning hole on the left side of the bottom plate;

[0045] S3, installing a fixing pin on each second positioning hole on the right side of the bottom plate, and then installing a movable mold assembly on the second installed fixing pin;

[0046] S4, rotating the movable mold assembly to complete the processing of the first bend on the far right of the air pipe;

[0047] S5, remove the movable mold assembly and retain the second installed fixing pin;

[0048] S6, and so on, repeat the steps from S3 to S5; complete the bending processing of all the positioning holes on the bottom plate corresponding to the air pipe from right to left.

[0049] Also includes:

[0050] S7, remove the air pipe, install the vertical side plate or the oblique side plate on the bottom plate, then put the air pipe back, and repeat S3 to S5, where the bottom plate in S3 to S5 becomes the vertical side plate or the oblique side plate, and complete the bending process of all the positioning holes on the vertical side plate or the oblique side plate corresponding to the air pipe from right to left.

[0051] Also includes:

[0052] S8, repeat S7 until the bending process of all the positioning holes of all the vertical side panels and the inclined side panels corresponding to the air pipe is completed.

[0053] Embodiment 2:

[0054] A special fixture for bending trachea at multiple spatial angles, characterized in that the fixture is mainly composed of a bottom plate, a vertical side plate, a 46.5° side plate, a connecting plate, a fixing screw, a fixing pin, and a 27 movable mold assembly, a 29 movable mold assembly, etc. The bottom plate of the fixture is provided with a positioning hole according to the center of the circle corresponding to the trachea workpiece, and the bending positioning of the trachea is ensured by the pin and the fixed mold. The bending of the trachea is completed by the movable mold assembly. The movable mold assembly is composed of a connecting plate, a rotating shaft, a bearing, a movable mold and a handle. The movable mold assembly can be connected to the fixed mold and the bottom plate by the pin. When the vertical side plate and the 46.5° side plate are bent in the previous step, they are connected to the bottom plate by screws. The positioning hole of each bend can ensure that the bending point of the trachea meets the requirements of the drawing when the trachea is bent. The vertical side plate ensures that the trachea can be bent in the vertical direction close to the side plate. The 46.5° side plate ensures that the trachea workpiece completes the bending of the spatial angle on a plane with a spatial angle of 46.5°.

[0055] The above 46.5° is a specific application scenario of the applicant. The corresponding angle can be changed according to the actual application scenario.

[0056] Embodiment 3:

[0057] like Figures 1 to 3 As shown, a special tool for bending a space angle trachea includes 1-bottom plate, 2-vertical side plate, 3-46.5° side plate, 4-27 movable mold assembly, 5-fixing pin, 6-fixing mold, 7-29 movable mold assembly, 8-fixing screws, etc.

[0058] The fixture bottom plate is provided with corresponding positioning holes for the trachea workpiece on the bottom plate and the rightmost starting point positioning hole. The through holes on the left are all positioning holes for the vertical side plate and the 46.5° side plate.

[0059] Each positioning hole is provided with a latch 5 and a fixed mold 6. The 4-27 movable mold assembly is composed of a 27 connecting plate, a rotating shaft, a bearing, and a movable mold. The 7-29 movable mold assembly is composed of a 29 connecting plate, a rotating shaft, a bearing, and a movable mold.

[0060] There are two holes on the connecting plate, the middle one is the rotating shaft hole, and the one close to the arc end is the positioning pin hole. By rotating the connecting plate, the connecting plate rotates with the positioning pin as the center of the circle, and the rotating shaft cooperates with the movable mold outside the bearing to bend the air pipe.

[0061] The whole set of fixtures includes a set of 4-27 movable mold assembly and 7-29 movable mold assembly. When bending the trachea, first place the bottom plate on the operating platform and fix it with an I-shaped clamp. The trachea passes through the right positioning point, that is, the pin 5 of the rightmost starting point positioning hole, a fixed mold 6 and the first bending point. The 120° bend of the first point is completed by the 4-27 movable mold assembly. After completing the first step, insert a pin 5, a fixed mold 6 and the 4-27 movable mold assembly of the first step at the second bending point to complete the 120° bend of the second point. Next, fix the 2-vertical side plate to the bottom plate with 8-fixing screws, and flip the bottom plate 90° and fix it with a bench vise. After the flip is completed, insert a pin 5, a fixed mold 6 and a 7-29 movable mold assembly at the third bending point to complete the bending of the third point with an upward offset of 6.5mm. Insert a pin 5, a fixed mold 6 and a 7-29 movable mold assembly at the fourth bending point to complete the fourth point to bend the trachea to a horizontal state. In this clamping state, the 3-46.5° side plate is fixed to the bottom plate by 8 fixing screws, and the 46.5° plane is built. Insert a latch 5, a fixed die 6, and the 4-27 movable die assembly of the first step at the fifth bending point to complete the bending of about 112° at the fifth point. Insert a latch 5, a fixed die 6, and the 4-27 movable die assembly of the first step at the sixth bending point to position the fifth bending angle. When the last point is bent to parallel, the bending of the trachea workpiece is completed.

[0062] In actual use, a special multi-space angle bending fixture of the present invention is used, and its working principle is as follows: first, the trachea parts to be bent are bent through the positioning pins and the movable mold assembly, and the next step of bending positioning will correct the bending completed in the previous step, so as to achieve the functions of detection and bending positioning. The sliding of the trachea workpiece in the vertical plane and the 46.5° plane is completed by the vertical side plate and the 46.5° side plate to achieve the bending of the spatial angle. After the six-step process is completed, the positioning pins of the six positioning holes and the fixed mold can complete the inspection of the trachea workpiece.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A bending fixture for multi-space angle air pipes, characterized in that: The invention comprises a bottom plate (1), a vertical side plate (2), an inclined side plate (3), a fixed pin (5) and a movable mold assembly; the vertical side plate (2) and the inclined side plate (3) are detachably mounted in the middle and upper left of the bottom plate (1); at least two positioning holes are arranged on the bottom plate (1), the vertical side plate (2) and the inclined side plate (3); the outer diameter of the fixed pin (5) matches the inner diameter of the positioning hole; after all the positioning holes of the fixed pin (5) are inserted into the fixed pin (5), all the fixed pins (5) form a bending path of the air pipe; the movable mold assembly rotates around the fixed pin (5) to bend the air pipe.

2. The multi-space angle trachea bending fixture according to claim 1, characterized in that: The positioning hole of the vertical side plate (2) and the positioning hole of the bottom plate (1) are perpendicular to each other, and the positioning hole of the oblique side plate (3) and the positioning hole of the bottom plate (1) have an angle greater than 0° and less than 90°.

3. The multi-space angle trachea bending fixture according to claim 1, characterized in that: The movable mold assembly includes a connecting plate, a rotating shaft, a bearing and a movable mold. A pin hole of the same size as the positioning hole is provided at one end of the connecting plate, and a rotating shaft hole is provided at the other end of the connecting plate. The rotating shaft is inserted into the rotating shaft hole from the bottom of the connecting plate. The rotating shaft extends out of the bottom of the connecting plate. A bearing is provided outside the extended part of the rotating shaft. The movable mold is mounted outside the bearing. The outer ring of the movable mold is a concave arc corresponding to the shape of the trachea.

4. The multi-space angle trachea bending fixture according to claim 3, characterized in that: The movable mold assembly also includes a handle, which is detachably mounted on one end of the connecting plate close to the rotating shaft hole.

5. The multi-space angle air pipe bending fixture according to claim 3, characterized in that: The invention also comprises a fixed mold (6), which is sleeved outside the fixed latch (5), and the outer ring of the fixed mold (6) is a concave arc corresponding to the outer shape of the trachea.

6. The multi-space angle air pipe bending fixture according to claim 3, characterized in that: Different movable mold assemblies are provided corresponding to different air pipe sections, the spacings between the rotating shaft holes and the latch holes of different movable mold assemblies are different, and the outer diameters of the movable molds of different movable mold assemblies are different.

7. A method for bending a multi-space-angle air pipe, using a multi-space-angle air pipe bending fixture as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, install the fixing pin on the rightmost positioning hole of the bottom plate; S2, place the unbent air pipe on the bottom plate, with the right side of the air pipe in contact with the fixing pin, and the rightmost part of the air pipe to be bent tangent to the second positioning hole on the left side of the bottom plate; S3, installing a fixing pin on each second positioning hole on the right side of the bottom plate, and then installing a movable mold assembly on the second installed fixing pin; S4, rotating the movable mold assembly to complete the processing of the first bend on the rightmost side of the air pipe; S5, remove the movable mold assembly and retain the second installed fixing pin; S6, and so on, repeat the steps from S3 to S5; complete the bending processing of all the positioning holes on the bottom plate corresponding to the air pipe from right to left.

8. The method for bending a multi-space-angle air tube according to claim 7, characterized in that: Also includes: S7, remove the air pipe, install the vertical side plate or the oblique side plate on the bottom plate, then put the air pipe back, and repeat S3 to S5, where the bottom plate in S3 to S5 becomes the vertical side plate or the oblique side plate, and complete the bending process of all the positioning holes on the vertical side plate or the oblique side plate corresponding to the air pipe from right to left.

9. A multi-space angle air pipe bending method according to claim 8, characterized in that: Also includes: S8, repeat S7 until the bending process of all the positioning holes of all the vertical side panels and the inclined side panels of the air pipe is completed.

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