A square steel pipe forming device

Abstract

The present invention discloses a square steel tube forming device, which is mainly used to solve the problem that the existing square tube forming causes the tube wall to bend inward and the forming size accuracy deviation is large. It includes: a frame; a conveyor belt, the conveyor belt is located in the middle of the frame; a pressure plate, the pressure plate is arranged on the inner top surface of the frame, and the top of the frame is provided with a plurality of lifting cylinders, and the lifting cylinders are connected to the top of the pressure plate; a pressure head, the pressure head is arranged at the bottom of the pressure plate, and the pressure head is located at the bottom of the pressure plate and is provided with two rows of multiple mirror-symmetrical ones; a machine base, the machine base is arranged in the frame and is located on both sides of the conveyor belt; a first movable plate, the first movable plate is arranged on the machine base, and a first screw motor is provided inside, and the first screw motor can drive the first movable plate to move up and down. The present invention achieves the beneficial effect that the wall surface of the square steel tube will not bend significantly after forming and the dimensional accuracy is high.

Description

Technical Field

[0001] The invention relates to the field of steel pipes, and in particular to a square steel pipe forming device. Background Art

[0002] Square tubes are divided into seamless and welded types. Seamless square tubes are formed by extruding seamless round tubes, while welded square tubes are formed by roll forming using cut steel plates as the parent material. However, the round tube extrusion process can cause the tube wall to deflect inwards. This is because the inner wall sinks in without support, which can lead to problems with subsequent building assembly materials. When the steel plate is roll-formed using two rollers, the pressure from both sides can cause the steel plate to rise upwards, and in severe cases, it can deflect inwards, resulting in deviations in bending accuracy. Therefore, it is important to have a device that can stabilize the square tube forming process. Summary of the Invention

[0003] The present invention aims to provide a square steel tube forming device to solve the problems of inward bending of the tube wall and large deviation in the forming dimensional accuracy during the existing square tube forming.

[0004] To achieve the above objectives, the embodiments of the present invention adopt the following solutions:

[0005] A square steel tube forming device, comprising:

[0006] frame;

[0007] A conveyor belt, located in the middle of the frame, for transporting steel plates in and out;

[0008] A pressing plate, the pressing plate is arranged on the inner top surface of the frame, and a plurality of lifting cylinders are provided on the top of the frame, the lifting cylinders are connected to the top of the pressing plate, and are used to drive the pressing plate to move up and down;

[0009] A pressure head is provided at the bottom of the pressing plate, and the pressure head is provided in two rows at the bottom of the pressing plate in a mirror-symmetrical manner, and is used to press down the steel plate;

[0010] A machine base, which is arranged in the machine frame and located on both sides of the conveyor belt;

[0011] A first movable plate, the first movable plate is arranged on the base, and a first screw motor is provided inside the base, and the first screw motor can drive the first movable plate to move up and down;

[0012] a second movable plate, the second movable plate being attached to the upper surface of the first movable plate, a second screw motor being fixedly provided at the bottom of the first movable plate, and the second screw motor being capable of driving the second movable plate to move up and down;

[0013] A pressing block is provided on the top of the first moving plate. The bottom of the pressing block passes through the first moving plate and fits on the second moving plate, and the pressing block can slide on the second moving plate.

[0014] The first moving plate is in a "z" shape, the second moving plate is located in the notch space of the first moving plate, and the inner side of the pressing block is chamfered and inclined to facilitate the pressing down of the steel plate.

[0015] Preferably, a protective frame is provided in front of the machine frame. The protective frame is located on the conveyor belt, and a transportation opening through which the steel plate can pass is provided in the middle of the protective frame.

[0016] Preferably, a first motor is provided in front of the pressing plate. A plurality of sliding grooves are provided in the pressing plate. The pressing head can slide in the sliding grooves. A first gear is provided on the sliding grooves, and the first gear is connected to the first motor. A rack that can mesh with the first gear is provided on the top of the pressing head, and the first motor can drive the pressing head to move left and right.

[0017] Preferably, a fixing block is provided on the second moving plate. A slider seat is provided in front of the fixing block. A second motor is provided at the bottom of the second moving plate, and the second motor is connected to the slider seat. The second motor can drive the slider seat to move up and down in front of the fixing block.

[0018] Preferably, a telescopic cylinder is provided above the slider seat. A push plate is provided in front of the telescopic cylinder. The push plate is located on both the left and right sides of the conveyor belt and above the pressing block.

[0019] Preferably, a convex block passing through the first moving plate is provided in the middle of the pressing block. A third motor is provided above the middle of the second moving plate, and the third motor is connected to the convex block in the middle of the pressing block. The third motor can drive the pressing plate to move.

[0020] Preferably, long blocks passing through the first moving plate are provided on the front and rear edges of the pressing plate. A fixed clamping plate is provided above the second moving plate. The fixed clamping plate is located on one side of the long block, and a first moving clamping plate and a second moving clamping plate are provided on the other side of the long block.

[0021] Preferably, the first moving clamping plate is in a "匚" shape, the second moving clamping plate is in a "┓" shape. The inner bottom surface of the first moving clamping plate is serrated, the inner top surface of the second moving clamping plate is serrated. A second gear is provided and meshes with each other inside the first moving clamping plate and the second moving clamping plate. A fourth motor is provided on the second moving plate, and the fourth motor is connected to the second gear. The fourth motor can drive the first moving plate and the second moving plate to move. Under the fixation of the first moving plate, the second moving plate and the fixed clamping plate, the pressing block will not swing during the pressing down of the steel plate, ensuring that the size after pressing is accurate and will not vary greatly.

[0022] Preferably, the guard frame is provided with scale dimensions.

[0023] A method for using a square steel pipe forming device, comprising:

[0024] The steel plate passes through the guard frame and is placed on the conveyor belt for transportation. After the steel plate is transported in, the telescopic cylinder is activated. The telescopic cylinder pushes out the push plate and moves it toward the steel plate from both sides of the conveyor belt. The push plate presses against both sides of the steel plate to keep the steel plate in the horizontal center position, which is convenient for symmetry after the pressure head is pressed down;

[0025] Start the first screw motor to drive the first movable plate to rise, so that the steel plate is lifted until the bottom of the pushing block exceeds the conveyor belt and stops rising;

[0026] The third motor is started to drive the pushing blocks to move and adjust the distance between the pushing blocks, and then the fourth motor is started to drive the first movable clamping plate and the second movable clamping plate to close to the long block, and cooperate with the fixed clamping plate to clamp and fix the long block so that the pushing blocks cannot swing;

[0027] Start the first motor to drive the pressing head to move and adjust the distance between the pressing heads so that the pressing head and the steel plate can be squeezed between the pushing blocks. Then start the lifting cylinder to drive the pressing plate down so that the pressing head presses the steel plate down and the steel plate is squeezed into a "U" shape.

[0028] The lifting cylinder drives the pressure head to rise to the distance of the secondary bending of the steel plate, and then starts the second motor, which drives the slider seat to rise, so that the push plate rises to both sides of the upper end of the steel plate, and finally starts the telescopic cylinder to push the push plate, so that the push plate offsets the upper ends of the steel plate against the left and right ends of the pressure head;

[0029] Start the second screw motor to drive the second movable plate to rise, so that the pushing block rises to the offset position of the steel plate, and then use the first motor to drive the pressure head to close, and the lifting cylinder drives the pressure head to rise out of the steel plate. Finally, the pressure head is pressed down from both sides of the upper end of the steel plate to flatten the offset sides of the steel plate and form it into a square steel tube.

[0030] Beneficial effects of the present invention:

[0031] The present invention relates to a square steel tube forming device, which comprises the following steps: placing a steel plate onto a conveyor belt and then transporting it in; using a push plate to correct its position; using a pressure head to press down and form it; and having a push block to resist during the pressing process, so that the inner wall of the steel plate will not bend; finally, using the pressure head as a fulcrum, the pushing action of the push plate causes the two sides of the steel plate to deviate inwards, and then using the push block to resist the outer ends of the steel plate, so that the pressure head will not bend the two sides after pressing down, and the steel plate can be formed into a square steel tube; the present invention achieves the beneficial effects that the wall surface of the square steel tube will not be greatly bent after being formed, and the dimensional accuracy of the square steel tube can be controlled with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0033] Figure 2 It is a front view of the present invention.

[0034] Figure 3 It is a moving view of the pressure head in the present invention.

[0035] Figure 4 It is a schematic diagram of the base and other mechanisms in the present invention.

[0036] Figure 5 It is a schematic diagram of the interior of the base in the present invention.

[0037] Figure 6 It is a top view of the base in the present invention.

[0038] Figure 7 It is a schematic diagram of the mechanism on the base in the present invention.

[0039] Figure 8 It is a schematic diagram of the steel plate conveying in the present invention.

[0040] Figure 9 It is a schematic diagram of the pressure head pressing down in the present invention.

[0041] Figure 10 It is a schematic diagram of the push plate pushing in the present invention.

[0042] Figure 11 It is a schematic diagram of the pressure head rising in the present invention.

[0043] Figure 12 It is a schematic diagram of the steel plate being formed by the pressing head in the present invention.

[0044] 1. Frame 2. Guard 3. Conveyor belt

[0045] 4. Press plate 41, slide 5, lifting cylinder

[0046] 6. Press head 7. First motor 8. First gear

[0047] 9. Machine base 10. First movable plate 11. Second movable plate

[0048] 111, fixed block 112, fixed splint 12, push block

[0049] 121, long block 13, slider seat 14, telescopic cylinder

[0050] 15, push plate 16, first screw motor 17, second motor

[0051] 18, second screw motor 19, third motor 20, fourth motor

[0052] 21. Second gear 22. First movable splint 23. Second movable splint DETAILED DESCRIPTION

[0053] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "one," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] For the purposes of simplicity and illustration, the principles of the embodiments are described primarily with reference to examples. In the following description, numerous specific details are provided to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that the embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring the embodiments. In addition, all embodiments may be used in combination with one another.

[0057] The present invention is a square steel pipe forming device, which includes: a frame 1; a conveyor belt 3, which is located in the middle of the frame 1 and is used to transport steel plates in and out; a pressing plate 4, which is arranged on the inner top surface of the frame 1, and a plurality of lifting cylinders 5 are provided on the top of the frame 1, and the lifting cylinders 5 are connected to the top of the pressing plate 4 to drive the pressing plate 4 to move up and down; a pressing head 6, which is arranged at the bottom of the pressing plate 4, and the pressing head 6 is located at the bottom of the pressing plate 4 and is provided with two rows of multiple mirror-symmetrical pressing heads 6, which are used to press down the steel plate; a machine base 9, which is arranged in the frame 1 and is located on both sides of the conveyor belt 3; a first movable plate 10, which is arranged on the machine base 9 and is provided with a first screw motor 16, which can drive The first movable plate 10 moves up and down; the second movable plate 11, the second movable plate 11 is attached to the upper surface of the first movable plate 10, and a second screw motor 18 is fixed to the bottom of the first movable plate 10, and the second screw motor 18 can drive the second movable plate 11 to move up and down; the pushing block 12, the pushing block 12 is arranged on the top of the first movable plate 10, the bottom of the pushing block 12 passes through the first movable plate 10 and is attached to the second movable plate 11, and the pushing block 12 can slide on the second movable plate 11, the first movable plate 10 is in a "z" shape, and the second movable plate 11 is located in the recessed space of the first movable plate 10, the inner side of the pushing block 12 is set to be chamfered and inclined to facilitate pressing down the steel plate, and the pressure head is "L" shaped, which is used to press down the steel pipe and can act as a fulcrum.

[0058] Specifically, if Figure 1 As shown, a guard frame 2 is provided in front of the frame 1. The guard frame 2 is located on the conveyor belt. A transport port is provided in the middle of the guard frame 2 for allowing steel plates to pass through.

[0059] Specifically, if Figure 3 As shown, a first motor 7 is provided in front of the pressure plate 4, and a plurality of slide grooves 41 are provided in the pressure plate 4. The pressure head 6 can slide in the slide grooves 41. A first gear 8 is provided on the slide groove 41. The first gear 8 is connected to the first motor 7. A gear rod that can engage with the first gear 8 is provided on the top of the pressure head 6. The first motor 7 can drive the pressure head 6 to move left and right.

[0060] Specifically, if Figure 4 As shown, a fixed block 111 is provided on the second movable plate 11, a slider seat 13 is provided in front of the fixed block 111, and a second motor 17 is provided at the bottom of the second movable plate 11. The second motor 17 is connected to the slider seat 13, and the second motor 17 can drive the slider seat 13 to move up and down in front of the fixed block 111.

[0061] Specifically, a telescopic cylinder 14 is provided above the slider seat 13, and a push plate 15 is provided in front of the telescopic cylinder 14. The push plate 15 is located on both the left and right sides of the conveyor belt 3 and above the pressing block 12.

[0062] Specifically, as Figure 6 shown, a convex block passing through the first moving plate 10 is provided in the middle of the pressing block 12. A third motor 19 is provided above the middle of the second moving plate 11. The third motor 19 is connected to the convex block in the middle of the pressing block 12, and the third motor 19 can drive the push plate 4 to move.

[0063] Specifically, as Figure 7 shown, long blocks 121 passing through the first moving plate 10 are provided on the front and rear edges of the push plate 4. A fixed clamping plate 112 is provided above the second moving plate 11. The fixed clamping plate 112 is located on one side of the long block 121, and a first moving clamping plate 22 and a second moving clamping plate 23 are provided on the other side of the long block 121.

[0064] Specifically, the first moving clamping plate 22 is in a "匚" shape, and the second moving clamping plate 23 is in a "┓" shape. The inner bottom surface of the first moving clamping plate 22 is serrated, and the inner top surface of the second moving clamping plate 23 is serrated. A second gear 21 is provided in the inner sides of the first moving clamping plate 22 and the second moving clamping plate 23 and meshes with each other. A fourth motor 20 is provided on the second moving plate 11. The fourth motor 20 is connected to the second gear 21, and the fourth motor 20 can drive the first moving plate 10 and the second moving plate 11 to move. Under the fixation of the first moving plate 10, the second moving plate 11 and the fixed clamping plate 112, the pressing block 12 will not swing during the pressing process of the steel plate, ensuring that the size after pressing is accurate and there is no large difference.

[0065] Specifically, scale dimensions are provided on the protective frame 2.

[0066] A method for using a square steel pipe forming device includes:

[0067] Pass the steel plate through the protective frame 2 and place it on the conveyor belt 3 for transportation. After conveying it in, start the telescopic cylinder 14. The telescopic cylinder 14 pushes out the push plate 15, which approaches the steel plate from both sides of the conveyor belt 3. The push plate 15 abuts against both sides of the steel plate, making the steel plate at the horizontal center position, which is convenient for the press head 6 to press symmetrically after pressing down;

[0068] Start the first lead screw motor 16 to drive the first moving plate 10 to rise, so that the steel plate is lifted until the bottom of the pressing block 12 exceeds the conveyor belt 3 and then stops rising;

[0069] The third motor 19 is started to drive the pushing blocks 12 to move and adjust the distance between the pushing blocks 12. Then, the fourth motor 20 is started to drive the first movable clamping plate 22 and the second movable clamping plate 23 to close toward the long block 121, and cooperate with the fixed clamping plate 112 to clamp and fix the long block 121, so that the pushing blocks 12 cannot swing.

[0070] Start the first motor 7 to drive the pressing head 6 to move and adjust the distance between the pressing heads 6 so that the pressing head 6 and the steel plate can be squeezed between the pushing blocks 12. Then start the lifting cylinder 5 to drive the pressing plate 4 to descend, so that the pressing head 6 presses the steel plate downward, and the steel plate is squeezed into a "U" shape.

[0071] The lifting cylinder 5 drives the pressure head 6 to rise to the distance of the secondary bending of the steel plate, and then starts the second motor 17, which drives the slider seat 13 to rise, so that the push plate 15 rises to both sides of the upper end of the steel plate. Finally, the telescopic cylinder 14 is started to push the push plate 15, so that the push plate 15 offsets the upper ends of the steel plate against the left and right ends of the pressure head 6;

[0072] Start the second screw motor 18 to drive the second movable plate 11 to rise, so that the pushing block 12 rises to the offset position of the steel plate, and then use the first motor 7 to drive the pressure head 6 to close, and the lifting cylinder 5 drives the pressure head 6 to rise out of the steel plate. Finally, the pressure head 6 is pressed down from both sides of the upper end of the steel plate to flatten the two offset sides of the steel plate and form it into a square steel tube.

[0073] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, all inventions and creations based on the concepts of the present invention are protected.

Claims

1. A square steel tube forming device, wherein: Comprising: Frame; Conveyor belt, which is located in the middle of the frame and is used for transporting steel plates in and out; Pressing plate, which is arranged on the inner top surface of the frame. There are multiple lifting cylinders on the top of the frame, and the lifting cylinders are connected to the top of the pressing plate for driving the pressing plate to move up and down; Pressing head, which is arranged at the bottom of the pressing plate, and there are two rows of multiple pressing heads at the bottom of the pressing plate that are mirror-symmetrical. The pressing head is used to press down the steel plate; Machine base, which is arranged in the frame and is located on both sides of the conveyor belt; First moving plate, which is arranged on the machine base. There is a first screw motor in the first moving plate, and the first screw motor can drive the first moving plate to move up and down; Second moving plate, which is attached to the upper surface of the first moving plate. There is a second screw motor fixed at the bottom of the first moving plate, and the second screw motor can drive the second moving plate to move up and down; Pushing block, which is arranged on the top of the first moving plate. The bottom of the pushing block passes through the first moving plate and is attached to the second moving plate, and the pushing block can slide on the second moving plate; There is a fixed block on the second moving plate. There is a slider seat in front of the fixed block. There is a second motor at the bottom of the second moving plate, and the second motor is connected to the slider seat. The second motor can drive the slider seat to move up and down in front of the fixed block; There is a telescopic cylinder above the slider seat. There is a push plate in front of the telescopic cylinder. The push plate is located on the left and right sides of the conveyor belt and above the pushing block; There is a convex block passing through the first moving plate in the middle of the pushing block. There is a third motor above the middle of the second moving plate, and the third motor is connected to the convex block in the middle of the pushing block. The third motor can drive the pushing block to move; There is a first motor in front of the pressing plate. There are multiple chutes in the pressing plate. The pressing head can slide in the chutes. There is a first gear on the chute, and the first gear is connected to the first motor. There is a rack on the top of the pressing head that can mesh with the first gear. The first motor can drive the pressing head to move left and right; There are long blocks passing through the first moving plate on the front and rear sides of the pushing block. There is a fixed clamping plate above the second moving plate. The fixed clamping plate is located on one side of the long block. There is a first moving clamping plate and a second moving clamping plate on the other side of the long block.

2. A square steel tube forming device according to claim 1, wherein: There is a protective frame in front of the frame. The protective frame is located on the conveyor belt, and there is a transportation opening in the middle of the protective frame through which the steel plate can pass.

3. A square steel tube forming device according to claim 2, wherein: The first moving clamping plate is in a "匚" shape, and the second moving clamping plate is in a "┓" shape. The inner bottom surface of the first moving clamping plate is toothed, and the inner top surface of the second moving clamping plate is toothed. There is a second gear in the inner sides of the first moving clamping plate and the second moving clamping plate and they mesh with each other. There is a fourth motor on the second moving plate, and the fourth motor is connected to the second gear. The fourth motor can drive the first moving clamping plate and the second moving clamping plate to move.

4. A square steel tube forming device according to claim 3, wherein: There are scale dimensions on the protective frame.

5. A method for using the square steel pipe forming device as described in claim 4, comprising: The steel plate passes through the guard frame and is placed on the conveyor belt for transportation. After the steel plate is transported in, the telescopic cylinder is activated. The telescopic cylinder pushes out the push plate and moves it toward the steel plate from both sides of the conveyor belt. The push plate presses against both sides of the steel plate to keep the steel plate in the horizontal center position, which is convenient for symmetry after the pressure head is pressed down; Start the first screw motor to drive the first movable plate to rise, so that the steel plate is lifted until the bottom of the pushing block exceeds the conveyor belt and stops rising; The third motor is started to drive the pushing blocks to move and adjust the distance between the pushing blocks, and then the fourth motor is started to drive the first movable clamping plate and the second movable clamping plate to close to the long block, and cooperate with the fixed clamping plate to clamp and fix the long block so that the pushing blocks cannot swing; Start the first motor to drive the pressing head to move and adjust the distance between the pressing heads so that the pressing head and the steel plate can be squeezed between the pushing blocks. Then start the lifting cylinder to drive the pressing plate down so that the pressing head presses the steel plate down and the steel plate is squeezed into a "U" shape. The lifting cylinder drives the pressure head to rise to the distance of the secondary bending of the steel plate, and then starts the second motor, which drives the slider seat to rise, so that the push plate rises to both sides of the upper end of the steel plate, and finally starts the telescopic cylinder to push the push plate, so that the push plate offsets the upper ends of the steel plate against the left and right ends of the pressure head; Start the second screw motor to drive the second movable plate to rise, so that the pushing block rises to the offset position of the steel plate, and then use the first motor to drive the pressure head to close, and the lifting cylinder drives the pressure head to rise out of the steel plate. Finally, the pressure head is pressed down from both sides of the upper end of the steel plate to flatten the offset sides of the steel plate and form it into a square steel tube.

Images