Reversible deformation guide die

Abstract

The utility model discloses a reversible deformation guide die which comprises a guide die block, a through groove is formed in the action end of the guide die block in the length direction of the guide die block, and the through groove is formed by matching two first cambered surfaces and a second cambered surface; the two first cambered surfaces are located on the two sides of the second cambered surface, and the first cambered surfaces are connected with the end face of the acting end of the guide module. The second cambered surface is located between the two first cambered surfaces, and the second cambered surface is in smooth transition connection with the two first cambered surfaces; the die guiding block is driven by the power end to move in the direction of the pipeline to be bent, and the through groove in the die guiding block makes contact with the pipeline, applies force to the pipeline and extrudes the pipeline. The through groove with the section formed by the three arc-shaped faces in a matched mode is formed in the acting end of the die guiding block, when the die guiding block is used for machining a to-be-bent pipeline, the oval through groove applies force to the to-be-bent pipeline and extrudes the to-be-bent pipeline, deformation of the pipeline is avoided, and the bent position of the bent pipeline meets the bent pipe deformation amount.

Description

Technical Field

[0001] The present application relates to an anti-deformation guide die, belonging to the field of pipeline processing. Background Art

[0002] The refrigerant pipe is an important component of automobile air conditioners. In actual use, the refrigerant pipe usually needs to be bent to a certain curvature. In this case, a guide die assembly will be used to bend the refrigerant pipe. Since some pipe diameters need to strictly control the bending deformation (the bending deformation range is 16.15 to 21.85 mm), and the bent pipe needs to be measured by the mold at the bend (i.e. Figure 1 The measurement is performed at P02 in the figure, while the guide die usually used in the prior art is a straight arc guide die. Since the straight arc guide die matches the shape of the pipeline and has no extrusion effect, the bending part of the pipeline has been deformed, resulting in the pipeline after bending (at P02) not meeting the requirements of the deformation amount of the bent pipe. Therefore, an anti-deformation guide die is proposed to optimize the shortcomings of the existing guide die. Utility Model Content

[0003] The present application proposes an anti-deformation guide die that meets the deformation processing requirements of bent pipes.

[0004] To achieve the above-mentioned purpose, it is achieved in the following manner. Specifically: the present application is a reverse deformation guide die, including a guide module, a through groove is opened at the active end of the guide module along the length direction of the guide module, and the through groove is formed by two first arc surfaces and one second arc surface; the two first arc surfaces are located on both sides of the second arc surface, and the first arc surface is connected to the end surface of the active end of the guide module; the second arc surface is located between the two first arc surfaces, and the second arc surface is smoothly connected to the two first arc surfaces; the guide module moves toward the direction of the pipeline to be bent under the drive of the power end, and the through groove on the guide module contacts the pipeline and applies force to the pipeline and extrude it.

[0005] Optionally, the height difference between the horizontal plane where the action end of the guide module is located and the horizontal plane where the center of the standard circle when the guide module is processed is located is 0.5 mm.

[0006] Optionally, with the longitudinal axis y where the center of the standard circle during guide module processing is located as the center line, the two circles where the first arc surfaces are located are symmetrically arranged on both sides of the longitudinal axis y, and the horizontal distance between the centers of the two circles where the first arc surfaces are located and the longitudinal axis y is 6 mm; the vertical distance between the center of the circle where the first arc surface is located and the center of the circle where the second arc surface is located is 6.48 mm.

[0007] Optionally, the radius of the circle where the first arc surface is located is 14.85 mm, and the radius of the circle where the second arc surface is located is 6.02 mm.

[0008] Optionally, the through groove is transitionally matched with the end surface of the active end of the guide module.

[0009] Optionally, a dovetail groove is provided in the middle of one end of the guide module away from the through groove, and the dovetail groove is used to be connected to the power end.

[0010] The beneficial effects that can be produced by the present application include: by setting a through groove with a cross-section formed by three arc-shaped surfaces at the active end of the guide module, when used for processing the pipe to be bent, the elliptical through groove applies force and squeezes the pipe to be bent to avoid deformation of the pipe, so that the bending part of the pipe after the bending process meets the deformation amount of the bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of measuring the bending deformation (at P02) of the pipe by the pipe measuring mold;

[0012] Figure 2 This is a three-dimensional schematic diagram of a guide module in one embodiment of the present application;

[0013] Figure 3 for Figure 2 Side view of

[0014] Figure 4 for Figure 2 Rear view of

[0015] Figure 5 This is a schematic diagram of the through-groove processing in this application;

[0016] Figure 6 This is a schematic diagram of the present application for pressing against a pipeline to be bent and away from the pipeline being bent.

[0017] List of components and reference numerals: 1. Guide module; 2. Active end; 3. Through slot; 4. Dovetail slot; 5. First arc surface; 6. Second arc surface. DETAILED DESCRIPTION

[0018] The present application is described in detail below with reference to the accompanying drawings and embodiments, but the present application is not limited to these embodiments.

[0019] As an implementation method of this application, refer to Figure 2-Figure 6 As shown, it is specifically a reverse deformation guide die, including a guide module 1, a dovetail groove 4 is provided in the middle of one end of the guide module 1 away from the through groove 3, and the dovetail groove 4 is used to connect with the power end, and is inserted and fixed on the connecting rod of the power end through the dovetail groove 4;

[0020] A through slot 3 is provided at the active end 2 of the guide module 1 along the length direction of the guide module 1, and the through slot 3 is formed by two first curved surfaces 5 and one second curved surface 6; the two first curved surfaces 5 are located on both sides of the second curved surface 6, and the first curved surface 5 is connected to the end surface of the active end of the guide module 1; the second curved surface 6 is located between the two first curved surfaces 5, and the second curved surface 6 is smoothly transitionally connected to the two first curved surfaces 5;

[0021] When the pipeline to be bent is clamped and moved to the guide module 1, the guide module 1 moves toward the direction of the pipeline to be bent under the drive of the power end, and the through groove 3 on the guide module 1 contacts the pipeline and applies force to and squeezes the pipeline. At this time, the bending component on one side of the guide module 1 performs a bending operation on the pipeline to be bent. During the bending operation performed by the bending component, the through groove 3 of the guide module 1 is always pressed against the pipeline, and the pipeline is pushed forward, clamped and squeezed. The force direction of the bending component is assumed to be a first direction, and the unbent part of the pipeline will generate a force opposite to the first direction. If the cross-section of the through groove 3 of the guide module 1 is a straight arc and has no squeezing effect, the pipeline will be deformed. If the cross-section of the through groove 3 of the guide module 1 is not a straight arc, the guide module 1 will apply force to press the pipeline, which will offset the force generated on the pipeline to ensure that the pipeline will not be deformed. In this way, the deformation of the bent pipe at the bend of the pipeline will meet the processing requirements.

[0022] In the above embodiment, the radius of the circle where the first arc surface 5 is located is 14.85 mm, and the radius of the circle where the second arc surface 6 is located is 6.02 mm.

[0023] As an embodiment of the present application, refer to Figure 5 As shown, with the longitudinal axis y where the center of the standard circle during the processing of the guide module 1 is located as the center line, the two circles where the first arc surfaces 5 are located are symmetrically arranged on both sides of the longitudinal axis y, and the horizontal distance between the centers of the two circles where the first arc surfaces 5 are located and the longitudinal axis y is 6 mm; the vertical distance between the center of the circle where the first arc surface 5 is located and the center of the circle where the second arc surface 6 is located is 6.48 mm.

[0024] As an implementation method of this application, refer to Figure 5 As shown, the height difference between the horizontal plane where the active end of the guide module 1 is located and the horizontal plane where the center of the standard circle when the guide module 1 is processed is 0.5 mm; due to the existence of the height difference, the pipeline will not be completely accommodated in the through groove on the anti-deformation guide mold, so the deformation of the pipeline can be avoided; it is worth mentioning that the radius of the pipeline is the same as that of the processing standard circle.

[0025] As an implementation method of this application, refer to Figure 3 and Figure 6As shown, the through groove 3 is transitionally matched with the end surface of the active end 2 of the guide module 1.

[0026] The anti-deformation guide die proposed in this application is suitable for the processing of refrigerant tube aluminum tubes (specification φ19*1.5). After the refrigerant tube aluminum tubes are processed using the anti-deformation guide die, the bending deformation range at P02 is 16.5~20.8, which meets the processing requirements of the bending deformation amount at P02 required for processing.

[0027] refer to Figure 3-Figure 5 , the steps of anti-deformation guide die processing are as follows:

[0028] 1. The longitudinal axis where the height and width center points of the guide module 1 intersect is the y-axis of the center of the standard circle to be processed; the height of the guide module 1 is 64.5 mm, and the center of the standard circle is 0.5 mm above the active end of the guide module 1 (i.e. 0.5 mm above the height of the guide module 1 of 64.5 mm). The horizontal line at this position is set as the x-axis, and the intersection of the x-axis and the y-axis is set as the center of the standard circle to be processed, wherein the x-axis is 0.5 mm away from the end face of the active end of the guide module 1;

[0029] 2. Determine the center position of the circle where the first arc surface 5 is located. Assume that the vertical axis a is the position of 6mm in the x-axis direction with the center of the standard circle as the origin and the horizontal axis b is the horizontal axis b. Take the horizontal axis b as the reference plane, and move the intersection of the vertical axis a and the horizontal axis b downward by 4.5mm along the direction of the vertical axis a. Mark the intersection position after downward movement as the center of the first arc surface 5. Draw a circle with a radius of 14.85mm with it as the center. The intersection of the circle with a radius of 14.85mm and the effective end face of the guide module 1 is set as the position of the first arc surface 5.

[0030] 3. Draw a circle symmetrically with the y-axis as the center line of the circle where the first arc surface 5 is located, and mark the center of the circle where the second first arc surface 5 is located. The intersection of the circle where the second first arc surface 5 is located and the active end surface of the guide module 1 is set as the position of the second first arc surface 5;

[0031] 4. Determine the center position of the circle where the second arc surface 6 is located and the second arc surface 6. Take the b-axis as the reference plane and translate downward 6.48mm to determine the horizontal axis c of the circle where the second arc surface 6 is located. The intersection of the horizontal axis c and the y-axis of the standard circle is the center of the circle where the second arc surface 6 is located. Draw a circle with a radius of 6.02mm using it as the center. The circle where the second arc surface 6 is located is tangent to the circles where the two first arc surfaces 5 are located. The tangent part of the circle where the second arc surface 6 is located and the circles where the two first arc surfaces 5 are located is determined to be the second arc surface 6; wherein, the two ends of the second arc surface 6 are the starting point and the plane where the action end of the guide module 1 is located is the end point for the two first arc surfaces 5;

[0032] 5. The two first arc surfaces 5 and one second arc surface 6 are determined as the cross-section of the through groove 3 and are processed in the length direction of the action end of the guide module 1 to form the through groove 3 for applying force to the aluminum tube of the refrigerant tube.

[0033] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An anti-deformation guide die, comprising a guide die block (1), characterized in that: A through groove (3) is provided at the active end (2) of the guide module (1) along the length direction of the guide module (1), and the through groove (3) is formed by two first curved surfaces (5) and one second curved surface (6); the two first curved surfaces (5) are located on both sides of the second curved surface (6), and the first curved surface (5) is connected to the end surface of the active end of the guide module (1); the second curved surface (6) is located between the two first curved surfaces (5), and the second curved surface (6) is smoothly transitionally connected to the two first curved surfaces (5); The guide module (1) moves towards the direction of the pipeline to be bent under the drive of the power end, and the through groove (3) on the guide module (1) contacts the pipeline and applies force to the pipeline to squeeze it.

2. The anti-deformation guided mold according to claim 1, characterized in that: The height difference between the horizontal plane where the active end of the guide module (1) is located and the horizontal plane where the center of the standard circle when the guide module (1) is processed is 0.5 mm.

3. The anti-deformation guided mold according to claim 1, characterized in that: Taking the longitudinal axis y where the center of the standard circle during the processing of the guide module (1) is located as the center line, the two circles where the first arc surfaces (5) are located are symmetrically arranged on both sides of the longitudinal axis y, and the horizontal distance between the centers of the two circles where the first arc surfaces (5) are located and the longitudinal axis y is 6 mm; the vertical distance between the center of the circle where the first arc surface (5) is located and the center of the circle where the second arc surface (6) is located is 6.48 mm.

4. The anti-deformation guided die according to claim 1 or 3, characterized in that: The radius of the circle where the first arc surface (5) is located is 14.85 mm, and the radius of the circle where the second arc surface (6) is located is 6.02 mm.

5. The anti-deformation guided mold according to claim 1, characterized in that: The through groove (3) is transitionally matched with the end surface of the active end (2) of the guide module (1).

6. The anti-deformation guided mold according to claim 1, characterized in that: A dovetail groove (4) is provided in the middle of one end of the guide module (1) away from the through groove (3), and the dovetail groove (4) is used for connecting with the power end.

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