Steel bending device

Abstract

The utility model relates to a steel bending device which comprises a machine frame, a bending die and a pushing platform, and the machine frame comprises an upper machine frame and a lower machine frame. The bending die comprises an upper die, a lower die and a die base, the upper die, a hydraulic cylinder and a spring barrel are arranged on the upper rack, and a telescopic rod in the spring barrel abuts against the upper die. A mold base is fixedly arranged on the lower rack, the paired lower molds are arranged in the mold base, and the lower molds are connected with the mold base through elastic assemblies; a bearing seat inclining towards the other lower die is fixedly arranged at the upper end of the lower die, a rotating shaft is arranged in the bearing seat in a penetrating mode, and a bending wheel coaxial with the rotating shaft is fixedly arranged on the rotating shaft; the upper die comprises a cylindrical die, and the pushing direction of the pushing platform is consistent with the axial direction of the cylindrical die. According to the device, the feeding and discharging processes can be automatically completed, manual participation is not needed, and bending wheels with different diameters can be conveniently replaced so as to cope with bending work of different types of steel materials with different rebound resilience.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bending, in particular to a steel bending device. Background Art

[0002] In the current existing U-shaped arc steel bending equipment, as shown in the attached drawings of the specification Figure 1 As shown, generally, a hydraulic cylinder is used to extrude a steel plate in a mold to bend the steel plate into a U-shaped arc; under the action of the hydraulic cylinder, the moving mold presses down on the fixed mold, and the paired extrusion blocks in the fixed mold will overcome the elastic force of the elastic component and approach each other to extrude and bend the steel plate, and the extrusion point at the top of the extrusion block is used to excessively bend the steel plate to offset the springback of the steel plate so that the bending angle of the steel plate meets the requirements.

[0003] However, there are still certain problems in the above existing equipment: First, due to excessive bending of the steel plate, the bent steel plate will be stuck on the moving mold when the moving mold moves upward after the extrusion is completed, and even if it is not stuck on the moving mold, it relies on manual unloading, wasting labor costs; Second, the degree of excessive extrusion of the mold on the steel plate is determined. If it is necessary to deal with different types of steel with different springbacks, it is necessary to replace the fixed mold to change the degree of excessive extrusion, which is inconvenient to replace and increases costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a steel bending device for solving the above problems existing in the prior art.

[0005] To solve the above problems, the utility model provides a steel bending device, which includes a frame, a bending mold and a pushing platform. The frame includes an upper frame and a lower frame; the bending mold includes an upper mold, a lower mold and a mold base. The upper mold, a hydraulic cylinder and a spring cylinder are arranged on the upper frame, and the telescopic rod in the spring cylinder abuts against the upper mold; the mold base is fixedly arranged on the lower frame, and paired lower molds are arranged inside the mold base. The lower mold is connected to the mold base through an elastic component; a bearing seat inclined towards another lower mold is fixedly arranged at the upper end of the lower mold, a rotating shaft is arranged in the bearing seat, and a bending wheel coaxial with the rotating shaft is fixedly arranged on the rotating shaft; the upper mold includes a cylindrical mold. The pushing direction of the pushing platform is consistent with the axial direction of the cylindrical mold, and the height of the pushing surface of the pushing platform is higher than or equal to the top height of the lower mold.

[0006] The steel bending device provided by the utility model also has the following technical features:

[0007] Further, a multi-stage push rod is fixedly arranged on the upper frame, and the spring cylinder is fixedly arranged at the end of the multi-stage push rod.

[0008] Further, an avoidance groove for avoiding the bending wheel is arranged at the top of the lower mold.

[0009] Further, the axis of the bending wheel is parallel to the axis of the cylindrical mold; the vertical distance from the axis of the bending wheel to the bottom surface of the lower mold where it is located is greater than the radius of the cylindrical mold; when the bottom surface of the lower mold abuts against the mold base, the minimum distance between the two bending wheels is less than the diameter of the cylindrical mold.

[0010] Further, the lower mold and the bearing seat are fixedly connected by countersunk head bolts.

[0011] Further, a feeding wheel is provided at the top end of the mold base, the top end of the feeding wheel is higher than the top end of the bending wheel, and the height of the pushing surface of the pushing platform is higher than or equal to the top end height of the feeding wheel.

[0012] Further, a multi-stage cylinder is fixedly provided on the pushing platform, a pushing block is fixedly provided at the end of the multi-stage cylinder, and the bottom of the pushing block is slidably arranged in a pushing groove on the pushing platform; the distance between the pushing platform and the mold base is less than the length of the pushing block in its pushing direction; the pushing groove penetrates the surface of the pushing platform facing the mold base.

[0013] Further, a limiting block is also provided on the pushing platform, and the limiting block can slide along a limiting groove perpendicular to the pushing groove on the pushing platform.

[0014] The utility model has the following beneficial effects: First, when the steel is stuck on the upper mold due to excessive bending, when the upper mold moves upward, the telescopic rod can remove the steel from the upper mold; then when the pushing platform pushes a new unbent steel plate towards the bending mold, the bent steel can be pushed out of the lower mold during the pushing process, so the processes of feeding and discharging are completed without manual participation; Second, when it is necessary to deal with different types of steel with different resilience, only the bending wheels with different diameters need to be replaced, and the bending wheels are replaced together with the bearing seat, and the replacement process is convenient and the cost is low. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the working process of the prior art;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a front view of the structure of the frame and the bending mold of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the lower mold and the mold base of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the pushing platform of the utility model;

[0020] Figure 6 For Figure 4 Detail view of part A of Specific implementation mode

[0021] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0022] As Figures 2 to 5 In the embodiment of the steel bending device of the present utility model shown, the steel bending device includes a frame 1, a bending die 2 and a pushing platform 3. The bending die 2 and the pushing platform 3 are respectively used for bending and pushing the steel 4. The frame 1 includes an upper frame 11, a lower frame 12 and a support beam 14. The bending die 2 includes an upper die 21, a lower die 22 and a die base 23.

[0023] Specifically, the upper die 21, a hydraulic cylinder and a spring cylinder 13 are provided on the upper frame 11. The upper die 21 includes a cylindrical die 211 and a connecting arm 212. The hydraulic cylinder pushes the connecting arm 212 to make the cylindrical die 211 extrude downward. The telescopic rod 131 in the spring cylinder 13 abuts against the upper die 21. A spring is provided in the spring cylinder 13 to make the telescopic rod 131 have a tendency to abut against the upper die 21 upward. The upper die 21 can move up and down due to the push of the hydraulic cylinder, while the position of the spring cylinder 13 remains unchanged. Therefore, when the steel 4 is stuck on the upper die 21 due to excessive bending, when the upper die 21 moves upward, the telescopic rod 131 can unload the steel 4 from the upper die 21.

[0024] The die base 23 is fixedly provided on the lower frame 12. A pair of lower dies 22 are arranged inside the die base 23. The lower die 22 is connected to the die base 23 through an elastic component. Specifically, the relevant working process of the lower die 22 and the die base 23 can be referred to Figure 1 ; A bearing seat 221 inclined towards the other lower die 22 is fixedly provided at the upper end of the lower die 22. A rotating shaft 222 is penetrated in the bearing seat 221. A bending wheel 223 coaxial with the rotating shaft 222 is fixedly provided on the rotating shaft 222. In this way, when it is necessary to deal with different categories of steels with different resilience, only the bending wheel 223 with different diameters needs to be replaced. Moreover, by replacing the bending wheel 223 together with the bearing seat 221, the replacement process is convenient and the cost is low.

[0025] The pushing direction of the pushing platform 3 is the same as the axial direction of the cylindrical die 211. The height of the pushing surface of the pushing platform 3 is higher than or equal to the top height of the lower die 22. In this way, when the pushing platform 3 pushes the new unbent steel plate towards the bending die 2, the bent steel 4 can be pushed out of the lower die 22 during the pushing process (the steel 4 has been unloaded from the upper die 21 by the telescopic rod 121). Therefore, the processes of loading and unloading are completed without manual participation.

[0026] In an embodiment of the present application, preferably, a multi-stage push rod 132 is fixedly provided on the upper frame 11, and a spring cylinder 13 is fixedly provided at the end of the multi-stage push rod 132; thus, by adjusting the length of the multi-stage push rod 132, the height of the spring cylinder 13 can be adjusted.

[0027] In an embodiment of the present application, preferably, an avoidance groove 224 for avoiding the bending wheel 223 is provided at the top of the lower die 22; thus, the radius of the bearing seat 221 can be reduced, the radius of the bending wheel 223 can be increased, and thus a bending wheel 223 with a larger radius can be replaced. At the same time, it can also prevent the radius of the bearing seat 221 from being too large and interfering with the bending process of the steel plate 4.

[0028] In an embodiment of the present application, preferably, the axis of the bending wheel 223 is parallel to the axis of the cylindrical die 211; the vertical distance from the axis of the bending wheel 223 to the bottom surface of the lower die 22 where it is located is greater than the radius of the cylindrical die 211; when the bottom surface of the lower die 22 abuts against the die base 23, the minimum distance between the two bending wheels 223 is less than the diameter of the cylindrical die 211; thus, it can be ensured that the bending wheel 223 can effectively over-bend the steel 4.

[0029] In an embodiment of the present application, preferably, the lower die 22 and the bearing seat 221 are fixedly connected by countersunk bolts; it is convenient to replace the bearing seat 221 and can also prevent the bolts from interfering with the bending process.

[0030] In an embodiment of the present application, preferably, a feeding wheel 231 is provided at the top of the die base 23, the top of the feeding wheel 231 is higher than the top of the bending wheel 223, and the height of the pushing surface of the pushing platform 3 is higher than or equal to the top height of the feeding wheel 231; thus, the feeding wheel 231 can ensure smooth feeding and will not cause the bending wheel 223 to interfere with the feeding process during feeding.

[0031] In an embodiment of the present application, preferably, a multi-stage cylinder 31 is fixedly provided on the pushing platform 3, a push block 32 is fixedly provided at the end of the multi-stage cylinder 31, and the bottom of the push block 32 is slidably arranged in a pushing groove 301 on the pushing platform 3; the distance between the pushing platform 3 and the die base 23 is less than the length of the push block 32 in its pushing direction; the pushing groove 301 penetrates the surface of the pushing platform 3 facing the die base 23; thus, when the push block 32 pushes the steel plate along the direction of the pushing groove 301 to the bending die 2, the push block 32 can push the steel plate to a position where at least the steel plate is completely within the bending die 2 and the edge of the steel plate is flush with the bending die 2. This can not only ensure that the feeding during pushing is in place but also ensure unloading during pushing.

[0032] In one embodiment of the present application, preferably, a limiting block 33 is further provided on the pushing platform 3, and the limiting block 33 can slide along a limiting groove 302 perpendicular to the pushing groove 301 on the pushing platform 3; the unbent steel plate can be limited perpendicular to the cylindrical mold, and the limiting position is adjustable to ensure the bending position.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steel bending device, characterized in that: The invention comprises a frame (1), a bending die (2) and a pushing platform (3), wherein the frame (1) comprises an upper frame (11) and a lower frame (12); the bending die (2) comprises an upper die (21), a lower die (22) and a die base (23); the upper frame (11) is provided with an upper die (21), a hydraulic cylinder and a spring cylinder (13); a telescopic rod (131) in the spring cylinder (13) abuts against the upper die (21); a die base (23) is fixedly provided on the lower frame (12); a pair of lower dies (22) are arranged inside the die base (23); and the lower dies (22) are arranged inside the die base (23). (22) is connected to the mold base (23) through an elastic component; a bearing seat (221) is fixedly provided at the upper end of the lower mold (22) and is inclined toward the other lower mold (22); a rotating shaft (222) is passed through the bearing seat (221), and a bending wheel (223) coaxial with the rotating shaft (222) is fixedly provided on the rotating shaft (222); the upper mold (21) includes a cylindrical mold (211), the pushing direction of the pushing platform (3) is consistent with the axial direction of the cylindrical mold (211), and the height of the pushing surface of the pushing platform (3) is higher than or equal to the top height of the lower mold (22).

2. The steel bending device according to claim 1, characterized in that: A multi-stage push rod (132) is fixedly provided on the upper frame (11), and the spring cylinder (13) is fixedly provided at the end of the multi-stage push rod (132).

3. The steel bending device according to claim 1, characterized in that: The top end of the lower mold (22) is provided with an avoidance groove (224) for avoiding the bending wheel (223).

4. The steel bending device according to claim 1, characterized in that: The axis of the bending wheel (223) is parallel to the axis of the cylindrical mold (211); the vertical distance between the axis of the bending wheel (223) and the bottom surface of the lower mold (22) on which it is located is greater than the radius of the cylindrical mold (211); when the bottom surface of the lower mold (22) contacts the mold base (23), the minimum distance between the two bending wheels (223) is less than the diameter of the cylindrical mold (211).

5. The steel material bending device according to claim 4, characterized in that: The lower mold (22) is fixedly connected to the bearing seat (221) by countersunk bolts.

6. The steel material bending device according to claim 4, characterized in that: A feeding wheel (231) is provided at the top of the mold base (23), the top of the feeding wheel (231) is higher than the top of the bending wheel (223), and the height of the pushing surface of the pushing platform (3) is higher than or equal to the height of the top of the feeding wheel (231).

7. The steel material bending device according to claim 6, characterized in that: A multi-stage cylinder (31) is fixedly provided on the pushing platform (3), a pushing block (32) is fixedly provided at the end of the multi-stage cylinder (31), and the bottom of the pushing block (32) is slidably arranged in a pushing groove (301) on the pushing platform (3); the distance between the pushing platform (3) and the mold base (23) is smaller than the length of the pushing block (32) in its pushing direction; and the pushing groove (301) passes through the surface of the pushing platform (3) facing the mold base (23).

8. The steel material bending device according to claim 7, characterized in that: A limit block (33) is also provided on the pushing platform (3), and the limit block (33) can slide along a limit groove (302) on the pushing platform (3) that is perpendicular to the pushing groove (301).

Images