Steel plate edge pre-bending machine

Abstract

The utility model discloses a steel plate edge pre-bending machine, and relates to the field of steel pipe welding production equipment. The steel plate pre-bending device comprises a base, a steel plate supporting mechanism and a steel plate pre-bending mechanism. The steel plate supporting mechanism comprises a pair of supporting columns fixed to the base, and a supporting roller is rotationally connected between the tops of the supporting columns. The steel plate pre-bending mechanism comprises a pre-bending rotating frame hinged to the base, a pair of positioning screws are arranged on the top face of the pre-bending rotating frame, a pre-bending die is clamped to the position, between the positioning screws, of the top face of the pre-bending rotating frame, the pre-bending die is in threaded connection with the positioning screws through positioning lugs, the pre-bending rotating frame is hinged to the telescopic end of a driving device, and the fixed end of the driving device is hinged to the base. The steel plate supporting mechanism and the steel plate pre-bending mechanism are arranged on the two sides of the top face of the base, the number of used auxiliary devices is small, and the structure is compact; during use, the pre-bending mold tightly presses a steel plate, drives the supporting column to ascend and drives the pre-bending rotating frame to rotate towards the supporting roller, so that pre-bending of the steel plate can be completed, operation is easy, and use is convenient.

Description

Technical Field:

[0001] The utility model relates to the field of steel pipe welding production equipment, in particular to a steel plate edge pre-bending machine. Background Art:

[0002] Large-diameter straight-seam steel pipes are mainly used in large pipeline projects, water and gas transmission projects, and urban pipe network construction. Large-diameter straight-seam steel pipes are formed by rolling steel plates. When the steel plates are bent on a rolling machine, there will be remaining straight edges at both ends. It is difficult to completely eliminate the remaining straight edges during roundness correction, which will cause relatively large weld stress and equipment load, and is prone to quality and equipment accidents. Therefore, it is necessary to pre-bend both ends of the steel plate so that both ends of the steel plate are compressed to form an arc with the required radius of curvature, eliminating the influence of the straight edges at the steel plate edges on the roundness of the steel pipe.

[0003] At present, the pre-bending methods for pipeline processing steel plates are roughly divided into two types: die pressing type and roll pressing type. The roll pressing process is mainly used. During operation, according to the required radius of curvature of the steel pipe, the relative positions of the molds are replaced and adjusted, and then the steel plate for pipe making is sent between the upper and lower molds of the machine. The roller is rotated, and the steel plate is rotated to form a bend under the pressure of the upper and lower molds, realizing the pre-bending of the steel plate. However, the roll pressing process requires more auxiliary devices, occupies a large equipment space, and has complex operations. Content of the Utility Model:

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a steel plate pre-bending machine with simple design, convenient operation, and small occupied space.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a steel plate edge pre-bending machine, including a base and a steel plate support mechanism and a steel plate pre-bending mechanism respectively arranged on both sides of the top surface of the base;

[0006] The steel plate support mechanism includes a pair of support columns. The bottom surfaces of the two support columns are fixedly connected to the base. A support roller is connected between the tops of the two support columns. The two ends of the rotating shaft of the support roller are respectively rotatably connected to the two support columns;

[0007] The steel plate pre-bending mechanism includes a pre-bending rotating frame. The bottom of the pre-bending rotating frame is hinged to the base. A pair of positioning screws are arranged on the top surface of the pre-bending rotating frame along the axial direction of the support roller. A pre-bending die is clamped on the top surface of the pre-bending rotating frame between the two positioning screws. The pre-bending die is screwed to the positioning screws through positioning ears. The pre-bending die is provided with a convex curved surface. The convex curved surface of the pre-bending die and the top surface of the pre-bending rotating frame form a clamping opening. The direction of the clamping opening faces the support column. The middle upper part of the side wall of the pre-bending rotating frame is hinged to the telescopic end of the driving device. The fixed end of the driving device is hinged to the top surface of the base on the side far from the pre-bending rotating frame.

[0008] Further, the support column is a hydraulic lifting rod.

[0009] Further, the positioning screw rod is fixedly connected to the top surface of the pre-bending frame through an electric lifting rod.

[0010] Further, a clamping groove is provided on the top surface of the pre-bending frame, and a clamping block is provided at the lower part of the pre-bending die. The clamping block is slidably arranged in the clamping groove.

[0011] Further, the driving device is a hydraulic telescopic rod.

[0012] The beneficial effects of the present utility model are as follows: The present utility model is composed of a base, a steel plate support mechanism on both sides of the top surface of the base, and a steel plate pre-bending mechanism. It uses fewer auxiliary devices and has a compact structure. During use, the pre-bending die presses the steel plate, the driving support column rises, and the driving pre-bending frame rotates towards the support roller, thus completing the pre-bending of the steel plate. The operation is simple and the use is convenient. Description of the drawings:

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a structural schematic diagram of the present utility model;

[0015] Figure 2 It is a top view of the present utility model;

[0016] Figure 3 It is a pre-bending state diagram of the present utility model;

[0017] Figure 4 It is an enlarged view of the partial A of the present utility model.

[0018] In the figure: base 1, steel plate support mechanism 2, support column 21, support roller 22, steel plate pre-bending mechanism 3, pre-bending frame 31, positioning screw rod 32, pre-bending die 33, positioning ear 34, driving device 35, clamping groove 36, clamping block 37, steel plate 4. Specific implementation manners:

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Combined with Figures 1-4 As shown, the present invention is a steel plate edge pre-bending machine, which includes a base 1, and a steel plate support mechanism 2 and a steel plate pre-bending mechanism 3 respectively arranged at both ends of the top surface of the base 1;

[0021] The steel plate support mechanism 2 includes a pair of hydraulic lifting support columns 21. The bottom surfaces of the two hydraulic lifting support columns 21 are respectively fixedly connected to the base 1. A support roller 22 is connected between the tops of the two hydraulic lifting support columns 21. The two ends of the rotating shaft of the support roller 22 are respectively rotatably connected to the two hydraulic lifting support columns 21. The two hydraulic lifting support columns 21 drive the support roller 22 and the steel plate 4 to rise to bend the edge of the steel plate 4;

[0022] The steel plate pre-bending mechanism 3 includes a pre-bending rotating frame 31. The bottom of the pre-bending rotating frame 31 is hinged to the base 1. A pair of electric positioning screws 32 are arranged on the top surface of the pre-bending rotating frame 31 along the axial direction of the support roller 22. The two electric positioning screws 32 are fixedly connected to the top surface of the pre-bending rotating frame 31. A clamping groove 36 is arranged on the top surface of the pre-bending rotating frame 31. A pre-bending die 33 is clamped in the clamping groove 36. A clamping block 37 is arranged at the lower part of the pre-bending die 33. The clamping block 37 is slidably arranged in the clamping groove 36. The pre-bending die 33 is screwed to the electric positioning screw 32 through a positioning ear 34 to realize the fixation of the pre-bending die 33 along the axial direction of the support roller 22. The pre-bending die 33 is provided with a convex curved surface for bending the edge of the steel plate 4. The convex curved surface of the pre-bending die 33 and the top surface of the pre-bending rotating frame 31 form a clamping opening, and the direction of the clamping opening faces the support column 21. The two electric positioning screws 32 drive the pre-bending die 33 to slide up and down in the clamping groove 36 to realize the pressing and taking out of the steel plate 4. The middle upper part of the side wall of the pre-bending rotating frame 31 is hinged to the telescopic end of a hydraulic driving device 35. The fixed end of the hydraulic driving device 35 is hinged to the top surface of the base on the side far from the pre-bending rotating frame. The hydraulic driving device 35 drives the pre-bending rotating frame 31 and the pre-bending die 33 to rotate towards the steel plate support mechanism 2 to pre-bend the edge of the steel plate 4.

[0023] Working principle:

[0024] According to the radius requirement for pre-bending the steel plate 4, select a pre-bending die 33 with a conforming arc radius, install the pre-bending die 33 on the pre-bending turntable 31, adjust the supporting roller 22 to an appropriate height, feed the steel plate 4 from the upper part of the supporting roller 22 to the clamping opening formed by the pre-bending die 33 and the pre-bending turntable 31, start the positioning screw 32 to drive the pre-bending die 33 to descend so as to press the steel plate 4, start the supporting column 21 to rise, the supporting roller 22 drives the steel plate 4 to rise, so that the edge of the steel plate 4 in the pre-bending die 33 is bent, start the driving device 35 to drive the pre-bending turntable 31 and the pre-bending die 33 to rotate towards the steel plate supporting mechanism 2, further bend the end of the steel plate 4, complete the bending operation of one end of the steel plate 4, then drive the supporting column 21 to descend and the positioning screw 32 to rise, take out the steel plate 4, the pre-bending turntable 31 and the pre-bending die 33 are reset, then feed the other end of the steel plate 4 into the pre-bending die 33 and repeat the above steps for the bending operation to realize the pre-bending of the whole steel plate 4.

[0025] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel plate edge pre-bending machine, characterized in that: It comprises a base and a steel plate supporting mechanism and a steel plate pre-bending mechanism respectively arranged on both sides of the top surface of the base; The steel plate support mechanism comprises a pair of support columns, the bottom surfaces of the two support columns are fixedly connected to the base, a support roller is connected between the tops of the two support columns, and both ends of the rotating shaft of the support roller are rotatably connected to the two support columns respectively; The steel plate pre-bending mechanism includes a pre-bending rotating frame, the bottom of the pre-bending rotating frame is hinged to the base, a pair of positioning screws are provided on the top surface of the pre-bending rotating frame along the axial direction of the supporting roller, a pre-bending mold is clamped on the top surface of the pre-bending rotating frame between the two positioning screws, the pre-bending mold and the positioning screw are screwed through positioning ears, the pre-bending mold is provided with an outer convex curved surface, the outer convex curved surface of the pre-bending mold and the top surface of the pre-bending rotating frame form a clamping opening, the clamping opening is directed toward the supporting column, the middle upper part of the side wall of the pre-bending rotating frame is hinged to the telescopic end of the driving device, and the fixed end of the driving device is hinged to the top surface of the base away from the side of the pre-bending rotating frame.

2. The steel plate edge pre-bending machine according to claim 1, characterized in that: The support column is a hydraulic lifting rod.

3. The steel plate edge pre-bending machine according to claim 1, characterized in that: The positioning screw is fixedly connected to the top surface of the pre-bending rotating frame through an electric lifting rod.

4. The steel plate edge pre-bending machine according to claim 1, characterized in that: A clamping groove is provided on the top surface of the pre-bending rotating frame, and a clamping block is provided at the lower part of the pre-bending mold, and the clamping block is slidably arranged in the clamping groove.

5. The steel plate edge pre-bending machine according to claim 1, characterized in that: The driving device is a hydraulic telescopic rod.

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