One-step forming die for double-lug support by using nitrogen spring

Abstract

The utility model relates to a one-step forming die for a double-lug support by utilizing a nitrogen spring, in particular to a one-step forming die for a double-lug support capable of eliminating microcracks by utilizing a nitrogen spring, which comprises an upper die plate and a lower die plate, the upper die plate is connected with an upper die block, the bottom of the upper die block is provided with two first bulges corresponding to a workpiece, and the lower die plate is connected with a lower die block. The lower die plate is connected with a lower die block and a nitrogen spring, the lower die block is provided with a fixed part and a floating part, the floating part is connected to the telescopic end of the nitrogen spring, the floating part is embedded in the fixed part, after the floating part slides downwards, a groove used for containing the first protrusion is formed in the fixed part, the floating part is provided with a second protrusion, and the second protrusion is embedded in the groove. And the second bulge is correspondingly arranged between the two first bulges. According to the double-lug support, microcracks generated in the pressing process can be avoided through the nitrogen spring one-time forming die.

Description

Technical Field

[0001] The utility model relates to a double-ear bracket one-time forming die using a nitrogen spring, in particular to a double-ear bracket one-time forming die using a nitrogen spring which can eliminate micro cracks. Background Art

[0002] See the instruction manual Figure 1 The third picture in the figure shows a double-ear bracket. The biggest feature of this bracket is that it is wavy in the middle. There are two common ways to form similar workpieces. One is by bending and the other is by die pressing. The disadvantage of bending is that since the workpiece is a thin part, the springback rate after bending is high and the forming error is large. The disadvantage of die pressing is that the upper and lower dies of the die are generally fixed structures, and the workpiece cannot be extended during pressing and forming, and micro cracks will be generated at the bend.

[0003] Based on this, it is necessary to improve the existing equipment to avoid the shortcomings of existing bending forming and die pressing forming. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a double-ear bracket that utilizes a nitrogen spring to form a mold in one step, thereby eliminating microcracks on the workpiece after the mold is pressed and formed.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a double-ear bracket using a nitrogen spring one-time forming mold, comprising:

[0006] An upper template, the upper template is connected to an upper module, and the bottom of the upper module is provided with two first protrusions corresponding to the workpiece;

[0007] A lower template, wherein the lower template is connected to a lower module and a nitrogen spring, the lower module is provided with a fixed portion and a floating portion, the floating portion is connected to the telescopic end of the nitrogen spring, the floating portion is embedded in the fixed portion, and after the floating portion slides downward, the fixed portion is formed with a groove for accommodating the first protrusion, and the floating portion is provided with a second protrusion, and the second protrusion corresponds to between the two first protrusions;

[0008] The upper template and the lower template are connected in a relative sliding manner, and the upper template and the lower template can slide to be close to each other or away from each other.

[0009] Preferably, the upper module is connected with a stripping plate and a push rod, the stripping plate is arranged between the two first protrusions, and the push rod is used to drive the stripping plate to slide.

[0010] Preferably, the top rod is made of polyurethane.

[0011] Preferably, the mating surfaces of the upper module and the lower module are configured as arc surfaces having the same shape as the workpiece.

[0012] Preferably, positioning plates are provided on both sides of the lower module.

[0013] Preferably, the upper template is provided with a guide sleeve, and the lower template is provided with a guide column, and the guide column and the guide sleeve are opposite to each other up and down.

[0014] The double-ear bracket disclosed in the utility model utilizes a nitrogen spring one-time forming mold, which has the following beneficial effects:

[0015] This device divides the common fixed lower die into a fixed part and a floating part. During the initial pressing, the workpiece is pressed from the initial horizontal plate into a right angle. During this process, since the two ends of the workpiece are not fixed yet and can be extended freely, no micro cracks will be generated; the upper die continues to press the workpiece downward, and the nitrogen spring, due to its large degree of compression, gradually increases the force provided to the workpiece until it is formed. While ensuring processing efficiency, the processing quality of the workpiece is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The steps of forming a workpiece using the device of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model in which the workpiece is fixed before forming;

[0018] Figure 3 It is a schematic diagram of the structure of the present utility model in which the workpiece is fixed during forming;

[0019] Figure 4 It is a structural schematic diagram of the utility model in which the workpiece is fixed after being formed.

[0020] In the figure, 1, upper template; 2, upper module; 3, workpiece; 4, first protrusion; 5, lower template; 6, lower module; 7, nitrogen spring; 8, fixed part; 9, floating part; 10, groove; 11, second protrusion; 12, stripping plate; 13, ejector rod; 14, arc surface; 15, positioning plate; 16, guide sleeve; 17, guide column. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 To Attachment Figure 4 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0022] A double-ear bracket is formed into a mold using a nitrogen spring, comprising an upper mold plate 1 and a lower mold plate 5. The upper mold plate 1 and the lower mold plate 5 are connected in a relative sliding manner, and the upper mold plate 1 and the lower mold plate 5 can slide to be close to each other or away from each other. Specifically, the upper mold plate 1 is provided with a guide sleeve 16, and the lower mold plate 5 is provided with a guide column 17, and the guide column 17 is opposite to the guide sleeve 16 in the upper and lower directions, and the guide sleeve 16 and the guide column 17 play a guiding role when the upper mold plate 1 and the lower mold plate 5 slide.

[0023] The upper template 1 is connected to the upper module 2, the stripping plate 12 and the push rod 13. Two first protrusions 4 corresponding to the workpiece 3 are arranged at the bottom of the upper module 2, and the first protrusions 4 correspond to the wavy shape in the middle position of the workpiece 3. The stripping plate 12 and the push rod 13 are arranged between the two first protrusions 4, and the push rod 13 is placed above the stripping plate 12. The push rod 13 is made of polyurethane and is used to drive the stripping plate 12 to slide. When the workpiece 3 is formed, the stripping plate 12 is pressed upward, and the stripping plate 12 compresses the push rod 13 upward to deform. When the upper template 1 and the lower template 5 begin to separate relatively, the push rod 13 recovers and pushes the push rod 13 downward, and the push rod 13 pushes the workpiece 3 downward to fall off from the upper module 2.

[0024] The lower mold plate 5 is connected with the lower module 6 and the nitrogen spring 7. The lower module 6 is provided with a fixed part 8 and a floating part 9. The floating part 9 is connected to the telescopic end of the nitrogen spring 7. The floating part 9 is embedded in the fixed part 8. After the floating part 9 slides downward, the fixed part 8 is formed with a groove 10 for accommodating the first protrusion 4. The floating part 9 is provided with a second protrusion 11. The second protrusion 11 corresponds to between the two first protrusions 4. Positioning plates 15 are provided on both sides of the lower module 6. The workpiece 3 is initially in the shape of a flat plate. The workpiece 3 is placed between the two positioning plates 15 before pressing.

[0025] The mating surfaces of the upper module 2 and the lower module 6 are arc surfaces 14 having the same shape as the workpiece 3 .

[0026] See attached Figure 1 , attached Figure 1 The forming process of the workpiece 3 using the device is presented. When preparing the workpiece 3, the upper module 2 and the lower module 6 are first separated, and the workpiece 3 is placed between the two positioning plates 15; then the device is started, the upper module 2 and the lower module 6 are brought close to each other, and the workpiece 3 is pressed into a right angle; the upper module 2 and the lower module 6 continue to approach each other until the workpiece 3 is pressed and formed, and the upper module 2 and the lower module 6 are separated from each other, and the stripper plate 12 peels the workpiece 3 from the upper module 2.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-ear bracket is formed by a nitrogen spring in one step, characterized in that: include: An upper template (1), the upper template (1) being connected to an upper module (2), and the bottom of the upper module (2) being provided with two first protrusions (4) corresponding to the workpiece (3); A lower template (5), wherein the lower template (5) is connected to a lower module (6) and a nitrogen spring (7), wherein the lower module (6) is provided with a fixed portion (8) and a floating portion (9), wherein the floating portion (9) is connected to the telescopic end of the nitrogen spring (7), wherein the floating portion (9) is embedded in the fixed portion (8), and after the floating portion (9) slides downward, the fixed portion (8) is formed with a groove (10) for accommodating the first protrusion (4), and the floating portion (9) is provided with a second protrusion (11), wherein the second protrusion (11) corresponds to between the two first protrusions (4); The upper template (1) and the lower template (5) are connected in a relatively sliding manner, and the upper template (1) and the lower template (5) can slide to move closer to each other or away from each other.

2. The double-ear bracket according to claim 1 is formed by a nitrogen spring in one step, characterized in that: The upper module (2) is connected with a stripping plate (12) and a push rod (13); the stripping plate (12) is arranged between two first protrusions (4); and the push rod (13) is used to drive the stripping plate (12) to slide.

3. The double-ear bracket according to claim 2 is formed by a nitrogen spring in one step, characterized in that: The top rod is made of polyurethane.

4. The double-ear bracket according to claim 2 is formed by a nitrogen spring in one step, characterized in that: The mating surfaces of the upper module (2) and the lower module (6) are arranged as arc surfaces (14) having the same outer shape as the workpiece (3).

5. The double-ear bracket according to claim 1 is formed by a nitrogen spring in one step, characterized in that: Positioning plates (15) are provided on both sides of the lower module (6).

6. The double-ear bracket according to claim 1 is formed by a nitrogen spring in one step, characterized in that: The upper template (1) is provided with a guide sleeve (16), and the lower template (5) is provided with a guide column (17), and the guide column (17) and the guide sleeve (16) are opposite to each other in upper and lower directions.

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