Metal square and round tube switchable one-step forming press apparatus and forming method

Abstract

The application discloses a metal square tube and round tube switchable one-time forming pressure equipment and a forming method, and the structure of the equipment comprises a pressure group, an adjusting cylinder, a moving frame, a supporting frame, a bottom die and a bottom disc; the pressure group and the adjusting cylinder are installed in the moving frame groove and synchronously move; the supporting frame is fixed between the moving frame and the bottom disc; the bottom die is installed between the two bottom discs; the supporting frame can adjust the height; the pressure group comprises a control machine, a wire interface, a cylinder body, a press, a moving wheel, an upper die, a pressing plate and an extension rod; the control machine is connected with an operation box through the wire interface; the press penetrates through the top of the cylinder body; the extension rod penetrates through the bottom of the cylinder body; the extension rod is fixed on the surface of the pressing plate; the pressing plate is installed on the surface of the upper die; the moving wheel is movable in the moving frame; the press is provided with six groups; the rotation can be controlled conveniently through the motor; the square tube and the round tube pressing die can be switched quickly; the method does not need to disassemble and reassemble the die, and the production efficiency and flexibility are improved significantly.

Description

Technical Field

[0001] This invention belongs to the field of presses, and more specifically, relates to a one-time forming press and forming method for switchable metal square tubes and round tubes. Background Technology

[0002] The tubular blank that has been longitudinally sealed is shaped into a final square or round tube product with precise dimensions and regular cross-section through a single pressurization action. Huge and controllable pressure is generated by hydraulic, mechanical or servo motor drive methods.

[0003] During the sealing process of the tube blank, local protrusions will be generated at the overlapping sealing edges. If the tube blank is directly pressed and formed on the same horizontal plane in the mold, the protrusions will cause uneven stress, resulting in tube deformation and ultimately causing pressing failure. Summary of the Invention

[0004] To address the aforementioned technical problems, the objective and effectiveness of the present invention—a one-time forming pressure device and forming method for switchable metal square tubes and round tubes—are achieved through the following specific technical means:

[0005] Its structure includes a pressure assembly, an adjusting cylinder, a movable frame, a support frame, a bottom mold, and a chassis. The pressure assembly and the adjusting cylinder are installed in the groove of the movable frame and can move synchronously. The support frame is fixed between the movable frame and the chassis. The bottom mold is installed between the two chassis. The support frame is adjustable in height.

[0006] The pressure assembly includes a control unit, a wire interface, a cylinder, a press, moving wheels, an upper mold, a pressure plate, and an extension rod. The control unit is connected to the operation box via a wire through the wire interface. The press extends through the top of the cylinder, and the extension rod extends through the bottom of the cylinder. The extension rod is fixed to the surface of the pressure plate, and the pressure plate is mounted on the surface of the upper mold. The moving wheels are located inside the moving frame and move within it. There are a total of six presses.

[0007] As a further improvement of the present invention, the upper mold includes a motor, an anti-slip layer, a central shaft, a rotating groove, and a limiting shell. The anti-slip layer and the limiting shell are an integrated structure. The central shaft is connected to the motor and passes through the interior of the rotating groove. The rotating groove is installed on the inner surface of the limiting shell and can rotate. The limiting shell plays a limiting role in the rotating groove and assists its rotation.

[0008] As a further improvement of the present invention, the rotating groove and the bottom mold can rotate synchronously, the central shaft and the moving wheel move synchronously, the anti-slip layer is in a horizontal state to help the pressure plate to better bear the force, and there are a total of six extension rods.

[0009] As a further improvement of the present invention, the central section of the central shaft is provided with four protrusions evenly distributed in a circle to assist the central shaft in driving the rotating groove to rotate. The rotating groove is provided with a square groove and a round groove on both sides. The central shaft is installed at the center of the rotating groove. The bottom mold is provided with a sealing edge placement groove.

[0010] As a further improvement of the present invention, the adjusting cylinder includes a control mechanism, a connection port, a rotating shaft, a connecting leaf, a placement cylinder, and a connecting rod. The control mechanism is connected to the operation box via the connection port by a wire. The connecting leaf is connected between the rotating shaft and the connecting rod. The connecting rod is fixed to the surface of the placement cylinder. The control mechanism has two parts that control the connecting leaf to swing to both sides.

[0011] As a further improvement of the present invention, the placement cylinder includes a magnetic layer, a main shell, a rotating block, a magnetic block, a groove, a back plate, and a connecting line. The magnetic layer is installed on the inner wall of the main shell. The magnetic block and the rotating block are an integrated structure, and a groove is formed between every two rotating blocks. The back plate and the main shell are an integrated structure. The connecting line connects the main shell and the control unit. When the magnetic layer is magnetically connected, it will attract the magnetic block.

[0012] As a further improvement of the present invention, when the magnetic layer is not magnetized, its rotating block can rotate along the inner circle of the magnetic layer. When the magnetic layer is magnetized, it can attract and fix the magnetic block. The groove formed by the combination of the two rotating blocks assists in the insertion of the sealing edge of the tube blank. The groove formed between the rotating blocks will rotate as a whole because the weight of the sealing edge of the tube blank is greater than other positions, so that the sealing edge faces down. When the magnetic layer has no magnetic force, its rotating block can rotate smoothly in the inner circle of the magnetic layer.

[0013] As a further improvement of the present invention, the one-time forming pressure device for switchable metal square tubes and round tubes has the following one-time forming pressure method:

[0014] S1: Two motors drive the rotating groove to rotate synchronously with the bottom mold, aligning it with the groove corresponding to the required forming section.

[0015] S2: Place the sealed tube blank into the adjusting cylinder, so that the sealing edge is engaged in the groove. Using the weight of the sealing edge, drive the rotating block to rotate smoothly along the inner circle of the magnetic layer, so that the sealing edge is positioned directly below.

[0016] S3: The control machine uses the controller to energize the magnetic layer and magnetize it, which attracts the magnetic block and fixes the rotating block. The support frame drives the adjusting cylinder to move down, and then the rotating shaft drives the connecting page and connecting rod to open the main shell, so that the tube blank falls into the bottom mold and the sealing edge is placed into the corresponding slot.

[0017] S4: The pressure group moves down synchronously with the adjusting cylinder. After reaching the top of the bottom mold, the extension rod and pressure plate are driven by the press to push the upper mold down and form the tube blank in the upper mold and the bottom mold.

[0018] S5: The upper mold moves upward and separates from the bottom mold, and the formed tube is removed.

[0019] The magnetic layer has a semi-circular structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Firstly, the rotation can be easily controlled by a motor, enabling rapid switching between square and round tube pressing dies. This method eliminates the need to disassemble and reassemble the dies, significantly improving production efficiency and flexibility.

[0022] Secondly, by using the self-weight of the tube blank to drive the rotating block to rotate, the sealing edge can be automatically and accurately positioned below and placed into the corresponding groove of the bottom mold. This design can effectively avoid uneven pressing or quality defects caused by the protrusion of the sealing edge, and ensure the stability of the molding process.

[0023] Thirdly, by isolating and accommodating the sealing edge in the groove of the bottom mold, the upper mold and the bottom mold can directly and evenly apply pressure to the tube blank body, achieving one-time complete forming. No additional treatment of the sealing edge is required before and after pressing, simplifying the process.

[0024] Fourth, the press is equipped with six evenly spaced actuating units, extension rods and pressure plates, which can ensure that the pressing force is evenly distributed on the upper die, thereby ensuring that the force on each part of the tube blank is consistent and effectively improving the dimensional accuracy and structural density of the formed parts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the metal square tube and round tube switchable one-time forming pressure device of the present invention.

[0026] Figure 2 This is a partial structural schematic diagram of the metal square tube and round tube switchable one-time forming pressure device of the present invention.

[0027] Figure 3 This is a schematic diagram of the pressure assembly of the present invention.

[0028] Figure 4 This is a schematic diagram of the upper mold of the present invention.

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the upper mold of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of the adjusting cylinder of the present invention.

[0031] Figure 7This is a side view of the adjusting cylinder of the present invention.

[0032] Figure 8 This is a flowchart of the steps of the one-time forming pressure method for switchable metal square tubes and round tubes according to the present invention.

[0033] In the diagram: Pressure assembly-1, Adjusting cylinder-2, Moving frame-3, Support frame-4, Bottom mold-5, Chassis-6, Control unit-11, Wire interface-12, Cylinder body-13, Press-14, Moving wheel-15, Upper mold-16, Pressure plate-17, Extension rod-18, Motor-61, Anti-slip layer-62, Central shaft-63, Rotating groove-64, Limiting shell-65, Control unit-21, Connecting port-22, Rotating shaft-23, Connecting page-24, Placement cylinder-25, Connecting rod-26, Magnetic layer-51, Main shell-52, Rotating block-53, Magnetic block-54, Groove-55, Back plate-56, Connecting line-57. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings: Example

[0035] As attached Figure 1 To be continued Figure 5 As shown:

[0036] This invention provides a one-time forming pressure device and forming method for switchable metal square tubes and round tubes. Its structure includes a pressure unit 1, an adjusting cylinder 2, a moving frame 3, a support frame 4, a bottom mold 5, and a base plate 6. The pressure unit 1 and the adjusting cylinder 2 are installed in the groove of the moving frame 3 and can move synchronously. The support frame 4 is fixed between the moving frame 3 and the base plate 6. The bottom mold 5 is installed between the two base plates 6. The support frame 4 can be adjusted in height.

[0037] The pressure assembly 1 includes a control unit 11, a wire interface 12, a cylinder 13, a press 14, a moving wheel 15, an upper mold 16, a pressure plate 17, and an extension rod 18. The control unit 11 is connected to the operation box via the wire interface 12. The press 14 extends through the top of the cylinder 13, and the extension rod 18 extends through the bottom of the cylinder 13. The extension rod 18 is fixed to the surface of the pressure plate 17, and the pressure plate 17 is mounted on the surface of the upper mold 16. The moving wheel 15 moves inside the moving frame 3. There are six sets of presses 14. The extension rod 18 extends under force to control the pressure plate 17 to press down.

[0038] The upper mold 16 includes a motor 61, an anti-slip layer 62, a central shaft 63, a rotating groove 64, and a limiting shell 65. The anti-slip layer 62 and the limiting shell 65 are an integrated structure. The central shaft 63 is connected to the motor 61 and passes through the interior of the rotating groove 64. The rotating groove 64 is installed on the inner surface of the limiting shell 65 and can rotate. The limiting shell 65 limits the rotation of the rotating groove 64 and assists its rotation. The movable frame 3 connects the pressure group 1 and the adjusting cylinder 2.

[0039] The rotating groove 64 and the bottom mold 5 can rotate synchronously, the central shaft 63 and the moving wheel 15 move synchronously, the anti-slip layer 62 is in a horizontal state to help the pressure plate 17 to better bear the force, there are six extension rods 18 in total, and the motor 61 controls the rotation of the rotating groove 64 to adjust the pressing of the square tube or round tube.

[0040] The central shaft 63 has four protrusions evenly distributed in a circle in the middle section, which assist the central shaft 63 in driving the rotating groove 64 to rotate. The rotating groove 64 has a square groove and a round groove on both sides. The central shaft 63 is installed at the center of the rotating groove 64. The bottom mold 5 has a sealing edge placement groove. The limiting shell 65 is bracket-shaped to assist the rotating groove 64 in rotating smoothly. The output shaft of the motor 61 is connected to the central shaft 63 through a coupling to drive the rotating groove 64 of the upper mold 16 to rotate. At the same time, the rotating shaft of the bottom mold 5 is connected to the output shaft of another motor through a set of synchronous belt pulley mechanism to ensure that the upper mold 16 and the bottom mold 5 can accurately rotate to the corresponding matching position when receiving the switching command.

[0041] The specific usage and function of this embodiment are as follows:

[0042] In this invention, the motor 61 controls the rotating groove 64 and the bottom mold 5 to rotate to the corresponding position of the required groove. The sealed tube blank is placed into the adjusting cylinder 2, and the sealing edge is accurately positioned and placed into the corresponding groove of the bottom mold 5. Then, the pressure group 1 and the adjusting cylinder 2 move synchronously along the moving frame 3, so that the upper mold 16 moves above the bottom mold 5. The control machine 11 controls the press 14 to push the extension rod 18, and the upper mold 16 is pressed down through the pressure plate 17, thereby pressing the tube blank between the groove of the upper mold 16 and the bottom mold 5. The anti-slip layer 62 is used to increase friction and help the overall structure to be more stable under force during the pressing process. When it is necessary to press square tubes or round tubes, it is only necessary to control the rotating groove 64 to switch to the corresponding groove through the motor 61 to realize the tube blank being pressed into the required shape in one go. Example

[0043] As attached Figure 6 To be continued Figure 8 As shown:

[0044] The adjusting cylinder 2 includes a control unit 21, a connection port 22, a rotating shaft 23, a connecting leaf 24, a placement cylinder 25, and a connecting rod 26. The control unit 21 is connected to the operation box via the connection port 22 by a wire. The connecting leaf 24 is connected between the rotating shaft 23 and the connecting rod 26. The connecting rod 26 is fixed to the surface of the placement cylinder 25. The control unit 21 has two parts that control the connecting leaf 24 to swing to both sides. The connecting leaf 24 is distributed in a figure-eight shape.

[0045] The placement cylinder 25 includes a magnetic layer 51, a main shell 52, a rotating block 53, a magnetic block 54, a groove 55, a back plate 56, and a connecting line 57. The magnetic layer 51 is installed on the inner wall of the main shell 52. The magnetic block 54 and the rotating block 53 are integrated, and a groove 55 is formed between every two rotating blocks 53. The back plate 56 and the main shell 52 are integrated. The connecting line 57 connects the main shell 52 and the control unit 21. When the magnetic layer 51 is magnetically connected, it will attract the magnetic block 54. The main shell 52 can drive the magnetic layer 51 and the magnetic block 54 to unfold to both sides.

[0046] When the magnetic layer 51 is not magnetized, its rotating block 53 can rotate along the inner circle of the magnetic layer 51. When the magnetic layer 51 is magnetized, it can attract and fix the magnetic block 54. The groove 55 formed by the combination of the two rotating blocks 53 assists in the placement of the sealing edge of the tube blank. The groove formed between the rotating blocks 53 will rotate as a whole because the weight of the sealing edge of the tube blank is greater than other positions, so that the sealing edge faces downward. When the magnetic layer 51 has no magnetic force, its rotating block 53 can rotate smoothly in the inner circle of the magnetic layer 51. The magnetic block 54 assists the rotating block 53 in attracting the magnetic layer 51 when it is magnetized.

[0047] The one-time forming pressure equipment for switchable metal square tubes and round tubes has the following one-time forming pressure method:

[0048] S1: Two motors 61 drive the rotating groove 64 to rotate synchronously with the bottom mold 5, so that it is aligned with the groove corresponding to the required forming section.

[0049] S2: Place the sealed tube blank into the adjusting cylinder 2, so that the sealing edge is inserted into the groove 55. Using the weight of the sealing edge, drive the rotating block 53 to rotate smoothly along the inner ring of the magnetic layer 51, so that the sealing edge is positioned directly below.

[0050] S3: The control unit 21 energizes the magnetic layer 51 through the controller to attract the magnetic block 54, thereby fixing the rotating block 53. The support frame 4 drives the adjusting cylinder 2 to move down. Then the rotating shaft 23 drives the connecting page 24 and the connecting rod 26 to open the main shell 52, so that the tube blank falls into the bottom mold 5 and the sealing edge is placed into the corresponding slot.

[0051] S4: Pressure group 1 moves down synchronously with adjusting cylinder 2. After reaching the bottom mold 5, it drives extension rod 18 and pressure plate 17 through press machine 14 to push upper mold 16 down and form tube blank in upper mold 16 and bottom mold 5.

[0052] S5: The upper mold 16 moves upward and separates from the bottom mold 5, and the formed tube is removed.

[0053] The magnetic layer 51 has a semi-circular structure, the connecting pages 24 are staggered, and the contact surfaces of the outer ring of the rotating block 53 and the inner ring of the magnetic layer 51 are made of high-hardness magnetic steel and are ground and polished with high precision. This ensures excellent magnetic conductivity and provides a sufficiently low coefficient of friction to meet the requirements of sensitive rotation.

[0054] The specific usage and function of this embodiment are as follows:

[0055] In this invention, the tube blank is placed into the adjusting cylinder 2, so that the sealing edge is embedded in the groove 55. Under its own weight, the tube blank drives the rotating block 53 to rotate downward as a whole. After the rotation stops, the control mechanism 21 controls the magnetic layer 51 to be energized and magnetized, attracting the magnetic block 54 to fix the rotating block 53. Subsequently, the connecting page 24 rotates along the rotating shaft 23, driving the connecting rod 26 to unfold, so that the main shell 52 unfolds the magnetic layer 51, the magnetic block 54 and the rotating block 53 to both sides as a whole, thereby completing the placement of the tube blank.

[0056] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A one-time forming pressure device for switchable square and round metal tubes, comprising a pressure assembly (1), an adjusting cylinder (2), a moving frame (3), a support frame (4), a bottom mold (5), and a base (6). The pressure assembly (1) and the adjusting cylinder (2) are installed in the groove of the moving frame (3) and can move synchronously. The support frame (4) is fixed between the moving frame (3) and the base (6). The bottom mold (5) is installed between the two bases (6). The support frame (4) is adjustable in height. The device is characterized by: The pressure assembly (1) includes a control unit (11), a wire interface (12), a cylinder (13), a press (14), a moving wheel (15), an upper mold (16), a pressure plate (17), and an extension rod (18). The control unit (11) is connected to the operation box via a wire through the wire interface (12). The press (14) extends through the top of the cylinder (13). The extension rod (18) extends through the bottom of the cylinder (13). The extension rod (18) is fixed to the surface of the pressure plate (17). The pressure plate (17) is installed on the surface of the upper mold (16). The moving wheel (15) moves inside the moving frame (3). The adjusting cylinder (2) includes a control unit (21), a connection port (22), a rotating shaft (23), a connecting page (24), a placement cylinder (25), and a connecting rod (26). The control unit (21) is connected to the operation box via the connection port (22) by a wire. The connecting page (24) is connected between the rotating shaft (23) and the connecting rod (26). The connecting rod (26) is fixed to the surface of the placement cylinder (25). The placement cylinder (25) includes a magnetic layer (51), a main shell (52), a rotating block (53), a magnetic block (54), a groove (55), a back plate (56), and a connecting line (57). The magnetic layer (51) is installed on the inner wall of the main shell (52). The magnetic block (54) and the rotating block (53) are an integrated structure. A groove (55) is formed between every two rotating blocks (53). The back plate (56) and the main shell (52) are an integrated structure. The connecting line (57) connects the main shell (52) and the control unit (21). When the magnetic layer (51) is not magnetized, its rotating block (53) can rotate along the inner circle of the magnetic layer (51). When the magnetic layer (51) is magnetized, it can attract and fix the magnetic block (54). The groove (55) formed by the combination of the two rotating blocks (53) assists in the placement of the sealing edge of the tube blank. The groove formed between the rotating blocks (53) will rotate as a whole because the weight of the sealing edge of the tube blank is greater than other positions, so that the sealing edge faces downward.

2. The metal square tube and round tube switchable one-time forming pressure equipment according to claim 1, characterized in that: The upper mold (16) includes a motor (61), an anti-slip layer (62), a central shaft (63), a rotating groove (64), and a limiting shell (65). The anti-slip layer (62) and the limiting shell (65) are an integrated structure. The central shaft (63) is connected to the motor (61). The central shaft (63) passes through the interior of the rotating groove (64). The rotating groove (64) is installed on the inner surface of the limiting shell (65) and can rotate.

3. The metal square tube and round tube switchable one-time forming pressure equipment according to claim 2, characterized in that: The rotating groove (64) and the bottom mold (5) can rotate synchronously, the central shaft (63) and the moving wheel (15) move synchronously, and the anti-slip layer (62) is in a horizontal state to help the pressure plate (17) to better bear the force.

4. The metal square tube and round tube switchable one-time forming pressure equipment according to claim 3, characterized in that: The central shaft (63) has four protrusions evenly distributed in a circle in the middle section to assist the central shaft (63) in driving the rotating groove (64) to rotate. The rotating groove (64) has a square groove and a round groove on both sides respectively. The central shaft (63) is installed at the center of the rotating groove (64).

5. A one-time forming pressure method for switchable square and round metal tubes, characterized in that: The one-time forming pressure device for switchable metal square tubes and round tubes as described in claim 4 has the following method for one-time forming pressure of metal square tubes and round tubes: S1: The rotating groove (64) is driven to rotate synchronously with the bottom mold (5) by two motors (61) so that it is aligned with the groove corresponding to the required forming section; S2: Place the sealed tube blank into the adjusting cylinder (2) so that the sealing edge is inserted into the groove (55). Use the weight of the sealing edge to drive the rotating block (53) to rotate smoothly along the inner circle of the magnetic layer (51) so that the sealing edge is positioned directly below. S3: The control machine (21) energizes the magnetic layer (51) through the controller to attract the magnetic block (54), thereby fixing the rotating block (53). The support frame (4) drives the adjusting cylinder (2) to move down. Then the rotating shaft (23) drives the connecting page (24) and the connecting rod (26) to open the main shell (52), so that the tube blank falls into the bottom mold (5) and the sealing edge is placed into the corresponding slot. S4: The pressure group (1) moves down synchronously with the adjusting cylinder (2). After reaching the bottom mold (5), the extension rod (18) and the pressure plate (17) are driven by the press (14) to push the upper mold (16) down and form the tube blank in the upper mold (16) and the bottom mold (5); S5: The upper mold (16) moves upward and separates from the bottom mold (5), and the formed tube is taken out.

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