Bent lifting lug forging die

Abstract

The utility model provides a bent lifting lug forging die which is used for forging a bent lifting lug, the bent lifting lug comprises an annular section and a tail section, the tail section is linear and is arranged in parallel based on the two ends of the annular section, the bent lifting lug comprises a cylindrical section used for machining the annular section and a linear section used for machining the tail section, and the linear section is fixedly arranged based on the outer edge face of the cylindrical section. A plurality of supporting sections used for supporting are fixedly arranged in the linear section and the cylindrical section. According to the utility model, the cylindrical section is adapted to the shape of the ring section of the bent lifting lug, and the linear section is adapted to the tail section of the bent lifting lug, so that in the forging process, a semicircular piece is firstly processed into a U-shaped piece according to the sizes such as the wall thickness, the height and the perimeter of the bent lifting lug; the bent lifting lug with the bent shape meeting the design requirement can be manufactured by pressing the bent lifting lug on the forging die, the forging efficiency of the bent lifting lug can be effectively improved, materials are saved, and the obtained bent lifting lug is uniform in internal fiber and higher in strength.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting lug processing equipment, in particular to a bent lifting lug forging die. Background Art

[0002] In industrial production, bending is a stamping process that can be used to bend the blank into a workpiece of a certain angle and shape through a bending die and a press according to the needs of the part shape. The bending die is an important basic equipment for the bending process, but in actual production, the blank is often prone to warping or sliding under the action of the bending die.

[0003] The structure of the lifting ear includes a ring segment structure, so it actually also involves related bending processes. The traditional lifting ear implementation process mainly relies on workers to use ordinary pipe bending machines to perform bending. This bending forming method will cause large errors, so that the bending shape does not meet the design requirements, the lifting ear has poor balance after processing, and the lifting ear surface is damaged, which greatly affects subsequent production. There are also problems such as high labor intensity and low efficiency for workers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art. The utility model proposes a bent lifting ear forging die which is directly used in the forging process of the bent lifting ear.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a curved lifting ear forging die, used for forging curved lifting ears, the curved lifting ear includes a ring segment and a tail segment, the tail segment is straight and is arranged in parallel based on the two ends of the ring segment, including a cylindrical segment for processing the ring segment and a straight segment for processing the tail segment, the straight segment is fixed based on the outer edge surface of the cylindrical segment, and a number of support segments for support are fixedly arranged inside the straight segment and the cylindrical segment.

[0006] Furthermore, the support segment includes a first support segment arranged in the cylindrical segment and a second support segment arranged in the straight segment.

[0007] Furthermore, a core is fixedly provided at the inner center of the cylindrical section, one end of the first support section is fixed on the outer edge of the core, and the other end is fixed on the inner wall of the cylindrical section, and several first support sections are evenly distributed within the cylindrical section.

[0008] Furthermore, a first transition section is provided at one end of the first supporting section close to the inner wall of the cylindrical section, and a second transition section is provided at one end of the first supporting section close to the outer edge of the core body.

[0009] Furthermore, the straight segment is a hollow structure, and at least three second support segments are fixedly arranged in the straight segment. The two ends of the second support segments are vertically fixed to the upper and lower sides of the straight segment, and the spacing between adjacent second support segments is the same.

[0010] Furthermore, a third transition section is provided at the contact point between the second supporting section and the inner wall of the straight section.

[0011] Compared with the prior art, the beneficial effects of the present invention include: the cylindrical segment is arranged to adapt to the ring segment shape of the curved lifting ear, and the straight segment is arranged to adapt to the tail segment of the curved lifting ear, and the forging die of the curved lifting ear is used in the forging process of the curved lifting ear. During the forging process, the semi-circular piece is first processed into a U-shaped piece according to the wall thickness, height and circumference of the curved lifting ear, and then pressed onto the forging die to obtain a curved lifting ear with a curved shape that meets the design requirements. It can effectively improve the forging efficiency of the curved lifting ear, save materials, and the internal fibers of the obtained curved lifting ear are uniform and have higher strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0013] Figure 1 The schematic diagram shows the overall structure of the bent ear forging die and the bent ear.

[0014] Numbers in the figure: 1-ring segment, 2-tail segment, 3-cylindrical segment, 4-straight segment, 5-first support segment, 6-second support segment, 7-core, 8-first transition segment, 9-second transition segment, 10-third transition segment. DETAILED DESCRIPTION

[0015] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0016] like Figure 1 As shown, a curved lifting ear forging die is used for forging the curved lifting ear. The shape of the curved lifting ear is first described. The curved lifting ear includes a ring segment 1 and a tail segment 2. The tail segment 2 is straight and is arranged parallel to the two ends of the ring segment 1. That is, the aforementioned curved lifting ear is actually a symmetrical structure.

[0017] The aforementioned bent ear forging die includes a cylindrical segment 3 for processing the aforementioned ring segment 1 and a straight segment 4 for processing the aforementioned tail segment 2. The straight segment 4 is fixedly arranged based on the outer edge surface of the cylindrical segment 3, and a number of support segments are fixedly arranged inside the straight segment 4 and the cylindrical segment 3 for supporting, so as to improve the stress condition of the bent ear forging die.

[0018] The aforementioned support segments include a first support segment 5 disposed within the cylindrical segment 3 and a second support segment 6 disposed within the straight segment 4. Regarding the arrangement of the aforementioned first support segment 5, a core 7 is fixedly disposed at the centerline of the cylindrical segment 3. The first support segment 5 is fixed to the outer edge of the core 7, with the other end fixed to the inner wall of the cylindrical segment 3. Several first support segments 5 are evenly distributed within the cylindrical segment 3. Regarding the arrangement of the aforementioned second support segments 6, the straight segment 4 is a hollow structure, with at least three second support segments 6 fixedly disposed within the straight segment 4. The ends of the second support segments 6 are fixed perpendicularly to the upper and lower sides of the straight segment 4, and the spacing between adjacent second support segments 6 is the same.

[0019] It is worth noting that a first transition section 8 is provided at one end of the first support section 5 close to the inner wall of the cylindrical section 3, and a second transition section 9 is provided at one end of the first support section 5 close to the outer edge of the core body 7; and a third transition section 10 is provided at the contact point between the second support section 6 and the inner wall of the straight section 4; the first transition section 8, the second transition section 9 and the third transition section 10 provided can be used to strengthen the fixation between the first support section 5 and the arc section and the core body 7, and between the second support section 6 and the straight section 4, and are used to strengthen the stress condition of the bending ear forging die, improve its service life, and facilitate the forging process of multiple bending ears.

[0020] During the forging process, the wall thickness, height, and circumference of the bending lug are first determined. Based on these wall thickness and circumference data, a cylindrical forging is obtained. Its height should be no less than the wall thickness of the bending lug, and its circumference should be no less than twice the circumference of the bending lug. The cylindrical forging is then cut in half and machined from the center of the semicircle toward the edge into a U-shaped structure with a length approximately equal to the bending lug. A bending die is then placed inside the U-shaped structure to complete the forging process until the forging aligns with the outer edge of the bending die. The forging is then smoothed and demolded, completing the bending lug forging process. Fixtures can then be used to secure the tail of the bending lug to prevent deformation.

[0021] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. A bending lug forging die for forging a bending lug, wherein the bending lug comprises a ring segment (1) and a tail segment (2), wherein the tail segment (2) is linear and arranged parallel to both ends of the ring segment (1), and is characterized in that: The invention comprises a cylindrical segment (3) for processing the ring segment (1) and a straight segment (4) for processing the tail segment (2); the straight segment (4) is fixedly arranged based on the outer edge surface of the cylindrical segment (3); and a plurality of supporting segments are fixedly arranged inside the straight segment (4) and the cylindrical segment (3) for supporting.

2. The bent ear forging die according to claim 1, characterized in that: The support segment comprises a first support segment (5) arranged in the cylindrical segment (3) and a second support segment (6) arranged in the straight segment (4).

3. The bent ear forging die according to claim 2, wherein A core (7) is fixedly provided at the inner center of the cylindrical section (3); one end of the first support section (5) is fixed on the outer edge of the core (7), and the other end is fixed on the inner wall of the cylindrical section (3); and a plurality of the first support sections (5) are evenly distributed within the cylindrical section (3).

4. The bent ear forging die according to claim 3, characterized in that: A first transition section (8) is provided at one end of the first support section (5) close to the inner wall of the cylindrical section (3), and a second transition section (9) is provided at one end of the first support section (5) close to the outer edge of the core (7).

5. The bent ear forging die according to claim 2, characterized in that: The straight section (4) is a hollow structure, and at least three second support sections (6) are fixedly arranged in the straight section (4). The two ends of the second support sections (6) are vertically fixed to the upper and lower sides of the straight section (4), and the spacing between adjacent second support sections (6) is the same.

6. The bent ear forging die according to claim 5, characterized in that: A third transition section (10) is provided at the contact point between the second supporting section (6) and the inner wall of the straight section (4).

Images