Angle-adjustable rear blocking finger structure of bending machine

Abstract

The utility model discloses an angle-adjustable rear blocking finger structure of a bending machine, which relates to the technical field of bending machines and comprises a fixing part, a first angle adjusting part and a second angle adjusting part, the first angle adjusting part and the second angle adjusting part are rotatably arranged on the fixing part, and rotating shafts of the first angle adjusting part and the second angle adjusting part are parallel to each other; the first angle adjusting part is provided with a first surface and a second surface close to the second angle adjusting part, and the second angle adjusting part is provided with a third surface and a fourth surface close to the first angle adjusting part; the first surface and the third surface can form a first positioning part, and the first positioning part is a plane parallel to a bending line of a to-be-bent piece; and the second surface and the fourth surface can form a second positioning part. The first angle adjusting part and the second angle adjusting part are rotationally arranged on the fixing part, the first face and the third face can form the first positioning part, the second face and the fourth face can form the second positioning part, and therefore accurate positioning of non-special-shaped parts can be achieved, and accurate positioning of special-shaped parts with the positioning edges being sharp corners can also be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a rear stop finger structure of a bending machine with adjustable angle. Background Art

[0002] A bending machine is a device that can bend thin plates, steel plates and other material plates. Due to the versatility of its forming molds and the convenience of process operations, it is widely used in traditional manufacturing fields such as aviation, railways, engineering machinery, and electronics.

[0003] At present, the rear positioning stop finger of the conventional bending machine is a plane. When the workpiece is bent, the positioning edge needs to be fully in contact with the rear positioning stop finger of the bending machine to achieve positioning. Figure 1 However, in the field of sheet metal bending, we often encounter some special-shaped bending parts, the positioning edge of these special-shaped bending parts is a sharp angle, such as Figure 2 As shown, during bending, the workpiece and the positioning stopper form line-surface contact rather than surface-surface contact, which will lead to problems such as inaccurate positioning dimensions, misalignment between the actual bending position and the designed bending position, and cause the workpiece to be scrapped. Utility Model Content

[0004] The utility model aims to provide a rear stop finger structure of a bending machine with adjustable angle, so as to solve the problems existing in the above-mentioned prior art and ensure the accuracy of the positioning size of a special-shaped part with a sharp positioning edge.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] An angle-adjustable rear finger structure of a bending machine comprises a fixed portion and a first angle adjustment portion and a second angle adjustment portion rotatably arranged on the fixed portion, wherein the rotation axes of the first angle adjustment portion and the second angle adjustment portion are parallel to each other; the first angle adjustment portion is provided with a first surface and a second surface close to the second angle adjustment portion, and the second angle adjustment portion is provided with a third surface and a fourth surface close to the first angle adjustment portion; the first surface and the third surface can constitute a first positioning portion, which is a plane parallel to the bending line of the workpiece to be bent; the second surface and the fourth surface can constitute a second positioning portion.

[0007] Preferably, the first surface is perpendicular to the second surface, and the third surface is perpendicular to the fourth surface.

[0008] Preferably, the first angle adjustment portion and the second angle adjustment portion are rotatably connected to the fixing portion via a rotating portion.

[0009] Preferably, the rotating part includes two guide sleeves fixedly arranged at one end of the fixed part, and pins fixedly arranged at one end of the first angle adjustment part and the second angle adjustment part and adapted to the guide sleeves.

[0010] Preferably, it also includes a locking part, which includes a first locking plate and a second locking plate respectively arranged on the first angle adjustment part and the second angle adjustment part, and the central axes of the first locking plate and the second locking plate coincide with the rotation axes of the first angle adjustment part and the second angle adjustment part respectively; the first locking plate and the second locking plate are provided with arc holes, and the fixing part is provided with threaded holes corresponding to the arc holes; the locking part also includes a locking bolt which locks the locking plate and the fixing part through the arc holes and the threaded holes.

[0011] Preferably, the first locking disk and the second locking disk are arranged tangent to each other, the second surface is tangent to the outer diameter of the first locking disk, and the fourth surface is tangent to the outer diameter of the second locking disk.

[0012] Preferably, the first locking disk and the second locking disk are both provided with angle scale lines.

[0013] Preferably, the zero scale line of the angle scale coincides with the side of the fixing portion, the second surface is parallel to the zero scale line of the first locking disk, and the fourth surface is parallel to the zero scale line of the second locking disk.

[0014] Preferably, the angular scale lines of the first locking disk and the second locking disk are arranged in a mirror image.

[0015] Preferably, the arc angle of the arc-shaped hole is at least 90°.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] By rotatably setting the first angle adjustment part and the second angle adjustment part on the fixed part, and the first surface of the first angle adjustment part and the third surface of the second angle adjustment part can constitute a first positioning part for positioning a non-special-shaped part with a straight positioning edge, the second surface of the first angle adjustment part and the fourth surface of the second angle adjustment part can constitute a second positioning part for positioning a special-shaped part with a sharp positioning edge, so that the rear finger structure can meet the precise positioning of both non-special-shaped parts and special-shaped parts with sharp positioning edges. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the prior art for dealing with non-special-shaped workpieces;

[0020] Figure 2 It is a schematic diagram of the prior art for coping with a special-shaped workpiece with a sharp-angled positioning edge;

[0021] Figure 3 This is a structural schematic diagram of the angle-adjustable rear finger structure of a bending machine disclosed in the utility model;

[0022] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0023] Figure 5 for Figure 3 Schematic diagram of the decomposition structure;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure from another perspective;

[0025] Figure 7 This is a schematic diagram of the utility model when dealing with non-special-shaped workpieces;

[0026] Figure 8 This is a schematic diagram of the utility model for handling a special-shaped workpiece with a sharp-angled positioning edge;

[0027] Among them, 1. fixing part; 2. arc hole; 3. second locking plate; 4. second angle adjustment part; 5. first angle adjustment part; 6. first locking plate; 7. locking bolt; 8. angle scale line; 9. guide sleeve; 10. pin shaft. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0029] The utility model aims to provide a rear stop finger structure of a bending machine with adjustable angle, so as to solve the problems existing in the prior art and ensure the accuracy of the positioning size of a special-shaped piece with a sharp positioning edge.

[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Please refer to Figures 3 to 8This embodiment provides an angle-adjustable rear finger structure of a bending machine, including a fixed part 1 and a first angle adjustment part 5 and a second angle adjustment part 4. The first angle adjustment part 5 and the second angle adjustment part 4 are rotatably arranged on the fixed part 1, and the rotation axes of the first angle adjustment part 5 and the second angle adjustment part 4 are parallel to each other. The first angle adjustment part 5 is provided with a first surface and a second surface, and the second surface is arranged on the side of the first angle adjustment part 5 close to the second angle adjustment part 4; the second angle adjustment part 4 is provided with a third surface and a fourth surface, and the fourth surface is arranged on the side of the second angle adjustment part 4 close to the first angle adjustment part 5. The first surface and the third surface can constitute a first positioning part, which is a plane parallel to the bending line of the part to be bent, and is used to position a non-special-shaped part with a straight positioning edge; the second surface and the fourth surface can constitute a second positioning part, and the second positioning part is used to position a special-shaped part with a sharp positioning edge.

[0032] Specifically, the plane formed by the first surface and the third surface needs to be compatible with the positioning edge of the part to be bent, that is, the positioning edge of the part to be bent is usually a plane perpendicular to the surface to be bent, so the first positioning portion formed by the first surface and the third surface should be parallel to the plane and fit tightly; similarly, the second surface and the fourth surface should also be parallel to the two side surfaces of the sharp corner of the special-shaped part and fit tightly.

[0033] The first angle adjustment part 5 and the second angle adjustment part 4 are rotatably connected to the fixed part 1 through the rotating part. The rotating part includes a guide sleeve 9 fixedly arranged at one end of the fixed part 1, and the guide sleeves 9 are two in number, which are used to connect the first angle adjustment part 5 and the second angle adjustment part 4 respectively; the rotating part also includes a pin 10 fixedly arranged at one end of the first angle adjustment part 5 and the second angle adjustment part 4, and the pin 10 is adapted to the guide sleeve 9 arranged on the fixed part 1.

[0034] This embodiment also includes a locking portion, which includes a first locking plate 6 and a second locking plate 3 respectively arranged on the first angle adjustment portion 5 and the second angle adjustment portion 4, and the central axes of the first locking plate 6 and the second locking plate 3 coincide with the rotation axes of the first angle adjustment portion 5 and the second angle adjustment portion 4 respectively; arc holes 2 are provided on the first locking plate 6 and the second locking plate 3, and threaded holes corresponding to the two arc holes 2 are provided on the fixing portion 1; the locking portion also includes a locking bolt 7 for locking the locking plate and the fixing portion 1 through the arc hole 2 and the threaded hole.

[0035] Furthermore, the second surface of the first angle adjustment portion 5 is tangent to the outer circle of the first locking plate 6, and the fourth surface of the second angle adjustment portion 4 is tangent to the outer circle of the second locking plate 3; preferably, the first locking plate 6 and the second locking plate 3 are also arranged tangently, and the diameter of the first locking plate 6 is equal to the diameter of the second locking plate 3.

[0036] As a preferred solution in this embodiment, the first locking disk 6 and the second locking disk 3 are both provided with angle scale lines 8, and the angle scale lines 8 of the first locking disk 6 and the second locking disk 3 are mirror images, and the zero scale line of the angle scale line 8 coincides with the side edge of the fixing portion 1. For example, the zero scale line of the first locking disk 6 of the first angle adjustment portion 5 located on the left side of the fixing portion 1 coincides with the left side edge of the fixing portion 1, and the zero scale line of the second locking disk 3 of the second angle adjustment portion 4 located on the right side of the fixing portion 1 coincides with the right side edge of the fixing portion 1.

[0037] Rotate the first angle adjustment portion 5 and the second angle adjustment portion 4 so that the zero scale lines of the first locking disk 6 and the second locking disk 3 coincide with the side of the fixing portion 1, that is, the angles of the first angle adjustment portion 5 and the second angle adjustment portion 4 are both 0°. At this time, the second surface is in contact with the fourth surface, and the first surface and the third surface are close to each other and form a plane, which is the first positioning portion.

[0038] As a preferred solution in this embodiment, the first surface of the first angle adjustment portion 5 is perpendicular to the second surface, and the third surface of the second angle adjustment portion 4 is perpendicular to the fourth surface.

[0039] The working process of this embodiment is:

[0040] When bending non-special-shaped parts, such as Figure 6 As shown, the angles of the first angle adjustment portion 5 and the second angle adjustment portion 4 are adjusted to 0°, and the locking bolt 7 is tightened so that the first surface and the third surface form a first positioning portion, and the positioning edge of the non-special-shaped part is fitted with the first positioning portion. After positioning is completed, bending begins.

[0041] When bending sharp-angled parts, Figure 7 As shown, according to the workpiece drawing, the first angle adjustment part 5 and the second angle adjustment part 4 are rotated to the corresponding angles so that the angle formed by the two is the same as the angle of the sharp corner of the special-shaped workpiece, forming a second positioning part, and then tightening the locking nut, and then inserting the sharp corner of the special-shaped workpiece into the second positioning part so that the two side surfaces of the sharp corner are in contact with the second surface and the fourth surface. After positioning is completed, bending begins.

[0042] In this embodiment, the first angle adjustment part 5 and the second angle adjustment part 4 are rotatably arranged on the fixed part 1, and the first surface of the first angle adjustment part 5 and the third surface of the second angle adjustment part 4 can constitute a first positioning part for positioning a non-special-shaped part with a straight positioning edge, and the second surface of the first angle adjustment part 5 and the fourth surface of the second angle adjustment part 4 can constitute a second positioning part for positioning a special-shaped part with a sharp positioning edge, so that the rear finger structure can meet the precise positioning requirements of both non-special-shaped parts and special-shaped parts with sharp positioning edges, and effectively solves the problem that when the existing rear finger structure is bent, the workpiece and the positioning finger form line-to-surface contact rather than surface-to-surface contact, which will lead to inaccurate positioning dimensions, misalignment between the actual bending position and the designed bending position, and cause the workpiece to be scrapped.

[0043] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0044] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. An angle-adjustable rear finger structure of a bending machine, characterized in that: It includes a fixed part and a first angle adjustment part and a second angle adjustment part rotatably arranged on the fixed part, the rotation axes of the first angle adjustment part and the second angle adjustment part are parallel to each other; the first angle adjustment part is provided with a first surface and a second surface close to the second angle adjustment part, and the second angle adjustment part is provided with a third surface and a fourth surface close to the first angle adjustment part; the first surface and the third surface can constitute a first positioning part, and the first positioning part is a plane parallel to the bending line of the part to be bent; the second surface and the fourth surface can constitute a second positioning part.

2. The angle-adjustable rear finger structure of a bending machine according to claim 1, characterized in that: The first surface is perpendicular to the second surface, and the third surface is perpendicular to the fourth surface.

3. The angle-adjustable rear finger structure of a bending machine according to claim 1, characterized in that: The first angle adjustment portion and the second angle adjustment portion are rotatably connected to the fixing portion via a rotating portion.

4. The angle-adjustable rear finger structure of a bending machine according to claim 3, characterized in that: The rotating part includes two guide sleeves fixedly arranged at one end of the fixed part, and pins fixedly arranged at one end of the first angle adjustment part and the second angle adjustment part and adapted to the guide sleeves.

5. The angle-adjustable rear finger structure of a bending machine according to any one of claims 1 to 4, characterized in that: It also includes a locking part, which includes a first locking plate and a second locking plate respectively arranged on the first angle adjustment part and the second angle adjustment part, and the central axes of the first locking plate and the second locking plate coincide with the rotation axes of the first angle adjustment part and the second angle adjustment part respectively; the first locking plate and the second locking plate are provided with arc holes, and the fixing part is provided with threaded holes corresponding to the arc holes; the locking part also includes a locking bolt that locks the locking plate and the fixing part through the arc holes and the threaded holes.

6. The angle-adjustable rear finger structure of a bending machine according to claim 5, characterized in that: The first locking disk and the second locking disk are arranged tangent to each other, the second surface is tangent to the outer diameter of the first locking disk, and the fourth surface is tangent to the outer diameter of the second locking disk.

7. The angle-adjustable rear finger structure of a bending machine according to claim 6, characterized in that: The first locking disk and the second locking disk are both provided with angle scale lines.

8. The angle-adjustable rear finger structure of a bending machine according to claim 7, characterized in that: The zero scale line of the angle scale coincides with the side of the fixing portion, the second surface is parallel to the zero scale line of the first locking disk, and the fourth surface is parallel to the zero scale line of the second locking disk.

9. The angle-adjustable rear finger structure of a bending machine according to claim 8, characterized in that: The angle scale lines of the first locking disk and the second locking disk are arranged in a mirror-image manner.

10. The angle-adjustable rear finger structure of a bending machine according to claim 5, characterized in that: The arc angle of the arc-shaped hole is at least 90°.

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