A CNC machined aluminum product bending and forming device

Abstract

This invention relates to the field of bending and forming technology, specifically to a CNC aluminum product bending and forming device, comprising a worktable, an electric push rod, and a bending head for bending aluminum profiles. The electric push rod is fixedly mounted on the worktable. The device also includes a flexible drive assembly and an auxiliary bending assembly. The flexible drive assembly is located at the output end of the electric push rod and connected to the bending head. The auxiliary bending assembly is mounted on the worktable, and the aluminum profile is placed on the auxiliary bending assembly. When the electric push rod is activated, it drives the bending head forward through the flexible drive assembly to contact the surface of the aluminum profile. This invention, through the flexible drive assembly and auxiliary bending assembly, can simultaneously provide a rigid driving force from both sides of the aluminum profile during the bending process, effectively ensuring product quality while avoiding local cross-sectional distortion of the aluminum profile during bending.

Description

Technical Field

[0001] This invention relates to the field of bending and forming technology, specifically to a CNC-controlled bending and forming device for aluminum products. Background Technology

[0002] In the intelligent manufacturing equipment industry, aluminum alloy materials have become the preferred structural materials in aerospace, rail transportation, new energy vehicles, modern building curtain walls and consumer electronics. CNC bending and forming equipment, through precise multi-axis linkage control, processes straight profiles or flat plates into finished products with specific spatial curves and functional cross sections during operation.

[0003] Traditional bending machines require manual removal of the formed aluminum material after bending. However, the plastic deformation during bending results in high surface temperatures, severely impacting work efficiency. While existing technologies offer solutions, such as the CNC aluminum product bending and forming device (publication number CN110587312B), which first cools the formed aluminum material by rinsing with a water pump and then dries it with an electric heater and heating wire, solving the problem of scalding hot surfaces and enabling fully automated bending, thus significantly improving efficiency, the following drawbacks remain: Aluminum profiles typically have complex cross-sections with multiple cavities, thin walls, and grooves or functional ribs. During bending, in addition to macroscopic bending, local cross-sectional distortion occurs, severely affecting product quality.

[0004] Therefore, in order to solve the above problems, a CNC machining aluminum product bending and forming device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a CNC aluminum product bending and forming device, which solves the problem that during the bending process of aluminum profiles, in addition to macroscopic bending, local cross-sectional distortion can also occur, which also affects product quality. By using a flexible drive component and an auxiliary bending component, a rigid driving force can be simultaneously provided from both sides of the aluminum profile during the bending process, effectively ensuring product quality while avoiding local cross-sectional distortion.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A CNC aluminum product bending and forming device includes a worktable, an electric push rod, and a bending head for bending aluminum profiles. The electric push rod is fixedly mounted on the worktable. The device also includes a flexible drive assembly and an auxiliary bending assembly. The flexible drive assembly is located at the output end of the electric push rod and connected to the bending head. The auxiliary bending assembly is located on the worktable. The aluminum profile is placed on the auxiliary bending assembly. When the electric push rod is activated, it drives the bending head forward through the flexible drive assembly to contact the surface of the aluminum profile. When the forward movement of the aluminum profile is blocked by the auxiliary bending assembly, the bending head and the flexible drive assembly continue to move forward following the output end of the electric push rod, and drive the auxiliary bending assembly to perform auxiliary bending on the aluminum profile at symmetrical positions on both sides of the bending head.

[0008] Preferably, the flexible drive assembly includes a sleeve, a movable rod, a spring, a first mounting plate, a second mounting plate, and a transmission mechanism. The sleeve is movably sleeved with the movable rod. The first mounting plate is fixedly disposed at the output end of the electric push rod. The second mounting plate is fixedly sleeved on the movable rod. The spring is fixedly disposed between the first and second mounting plates and is movably sleeved with the sleeve and the movable rod. The bending head is detachably disposed at the front end of the movable rod. The transmission mechanism is disposed at the output end of the electric push rod and connected to the auxiliary bending assembly.

[0009] Preferably, the auxiliary bending assembly includes a support rod and a disc, and two support rods and two discs are provided. The two support rods are rotatably mounted on the worktable, and the two discs are respectively fixedly sleeved on the corresponding support rods. Two positioning rods are rotatably mounted on the discs, and bending rollers are fixedly sleeved on the two positioning rods.

[0010] Preferably, the transmission mechanism includes an L-shaped rod and guide wheels. A strip-shaped opening is provided on the worktable. The L-shaped rod is movably inserted into the strip-shaped opening, and its upper end is fixedly connected to the output end of the electric push rod. Two guide wheels are provided and are respectively fixedly installed at the lower end of the corresponding support rod. Two traction ropes are provided on the L-shaped rod, and the other end of each traction rope is connected to the corresponding guide wheel.

[0011] Preferably, each of the two disks is fixedly fitted with a toothed ring, and the two toothed rings mesh with each other.

[0012] Preferably, the disc has a groove, the projection of the bending roller along its own axis is located in the groove, and the axial length of the bending roller is greater than the width of the aluminum profile.

[0013] Preferably, a contact switch is provided inside the sleeve, and the contact switch is fixedly mounted on the first mounting plate. The movable distance between the second mounting plate and the front end of the sleeve is equal to the distance between the rear end of the movable rod and the contact switch.

[0014] Preferably, a torsion spring is movably sleeved on the support rod, and the two ends of the torsion spring are respectively connected to the worktable and the rod wall of the support rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The flexible drive component provides pressure buffering and segmented control during the bending process of aluminum profiles. After the electric push rod is started, the flexible drive component can prevent instantaneous impact when the bending head comes into contact with the aluminum profile through the pre-compression and buffering effect of the spring, thus preventing surface damage to the aluminum profile caused by hard stamping.

[0017] 2. Through the flexible drive component and auxiliary bending component, driving force can be applied simultaneously from both sides of the aluminum profile during bending operations. After the flexible drive component completes pre-compression and buffering, the drive mechanism in the flexible drive component can drive the auxiliary bending component to rotate synchronously. This allows the symmetrically distributed bending rollers to apply symmetrical reverse forces to the aluminum profile during macro-bending, effectively offsetting the local stress concentration caused by uneven distribution of internal stress in the material during bending. This effectively prevents the problem of local cross-sectional distortion of the aluminum profile, thereby ensuring product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the connection structure between the electric linear actuator, bending head, and flexible drive assembly;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the connection structure between the electric actuator, bending head, and auxiliary bending assembly;

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the connection structure between the L-shaped rod and the transmission mechanism;

[0022] Figure 5 For the present invention Figure 4 A bottom view;

[0023] Figure 6 This is an exploded view of the flexible drive assembly and contact switch of the present invention.

[0024] In the diagram: 1. Workbench; 11. Strip opening; 2. Electric push rod; 3. Bending head; 4. Bending aluminum profile; 5. Flexible drive assembly; 51. Sleeve; 52. Movable rod; 53. Spring; 54. Mounting plate one; 55. Mounting plate two; 56. Transmission mechanism; 561. L-shaped rod; 562. Guide wheel; 563. Torsion spring; 564. Traction rope; 57. Contact switch; 6. Auxiliary bending assembly; 61. Support rod; 62. Disc; 621. Positioning rod; 622. Bending roller; 623. Toothed ring; 624. Groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 6 This invention provides a CNC machining aluminum product bending and forming device, the technical solution of which is as follows:

[0027] For details, please refer to Figure 1 A CNC aluminum product bending and forming device includes a worktable 1, an electric push rod 2, and a bending head 3 for bending aluminum profiles 4. The electric push rod 2 is fixedly mounted on the worktable 1. The device also includes a flexible drive component 5 and an auxiliary bending component 6. The flexible drive component 5 is located at the output end of the electric push rod 2 and connected to the bending head 3. The auxiliary bending component 6 is located on the worktable 1. The aluminum profile is placed on the auxiliary bending component 6. When the electric push rod 2 is activated, it drives the bending head 3 to move forward and contact the surface of the aluminum profile through the flexible drive component 5. When the forward movement of the aluminum profile is blocked by the auxiliary bending component 6, the bending head 3 and the flexible drive component 5 continue to move forward following the output end of the electric push rod 2, and drive the auxiliary bending component 6 to perform auxiliary bending on the aluminum profile at symmetrical positions on both sides of the bending head 3.

[0028] As one embodiment of the present invention, refer to Figure 1 , Figure 2 and Figure 3The flexible drive assembly 5 includes a sleeve 51, a movable rod 52, a spring 53, a first mounting plate 54, a second mounting plate 55, and a transmission mechanism 56. The sleeve 51 is movably sleeved with the movable rod 52. The first mounting plate 54 is fixedly disposed at the output end of the electric push rod 2. The second mounting plate 55 is fixedly sleeved on the movable rod 52. The spring 53 is fixedly disposed between the first mounting plate 54 and the second mounting plate 55, and is movably sleeved with the sleeve 51 and the movable rod 52. The bending head 3 is detachably disposed at the front end of the movable rod 52. The transmission mechanism 56 is disposed at the output end of the electric push rod 2 and connected to the auxiliary bending assembly 6.

[0029] By adopting the above technical solution, when the electric push rod 2 is working, its output end drives the mounting plate 54 mounted on it to move. Since the mounting plate 54 is fixedly connected to the sleeve 51 and the mounting plate 55 is fixedly connected to the movable rod 52, and the spring 53 is sequentially sleeved with the sleeve 51 and the movable rod 52, the mounting plate 54 can synchronously drive the mounting plate 55 and the movable rod 52 to move during the movement. Since the bending head 3 is set at the end of the movable rod 52, when the bending head 3 contacts the aluminum profile and pushes the aluminum profile to move, it is blocked by the auxiliary bending component 6. As the electric push rod 2 continues to output, the spring 53 begins to compress. Then the electric push rod 2 continues to output until the mounting plate 55 contacts the end of the sleeve 51, so that the spring 53 can no longer be compressed. At this time, the bending head 3 begins to bend the aluminum profile, avoiding the aluminum profile being bent directly without being adjusted to the appropriate bending angle after the bending head 3 contacts the aluminum profile, thus effectively ensuring product quality.

[0030] As one embodiment of the present invention, refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The auxiliary bending component 6 includes a support rod 61 and a disc 62. There are two support rods 61 and two discs 62. The two support rods 61 are rotatably mounted on the worktable 1. The two discs 62 are respectively fixedly sleeved on the corresponding support rods 61. Two positioning rods 621 are rotatably mounted on the discs 62. Bending rollers 622 are fixedly sleeved on the two positioning rods 621.

[0031] By adopting the above technical solution, before bending, both ends of the aluminum profile can be respectively clamped between the two bending rollers 622 on the corresponding discs 62, eliminating the need to manually adjust the position of the aluminum profile during bending. At the same time, since the discs 62 are fixedly set on the support rod 61 and the support rod 61 is rotatably set on the worktable 1, during the bending operation when the bending head 3 moves forward, the two discs 62 can rotate in opposite directions to follow the bending process of the aluminum profile, thereby avoiding deformation of the aluminum profile caused by the position of the bending rollers 622, and further ensuring product quality.

[0032] As one embodiment of the present invention, refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The transmission mechanism 56 includes an L-shaped rod 561 and a guide wheel 562. The workbench 1 has a strip-shaped opening 11. The L-shaped rod 561 is movably inserted into the strip-shaped opening 11, and its upper end is fixedly connected to the output end of the electric push rod 2. There are two guide wheels 562, which are respectively fixedly installed at the lower end of the corresponding support rod 61. Two traction ropes 564 are provided on the L-shaped rod 561, and the other end of each traction rope 564 is connected to the corresponding guide wheel 562.

[0033] By adopting the above technical solution, when the bending head 3 performs bending operations on the aluminum profile under the action of the electric push rod 2, since the L-shaped rod 561 is fixedly set at the output end of the electric push rod 2, it will also move along with the output end of the electric push rod 2 during the bending operation of the bending head 3; when the bending head 3 moves forward to contact the front end of the mounting plate 2 55 and the sleeve 51, the two traction ropes 564 set on the L-shaped rod 561 are engaged with the corresponding guide wheel 562 and move with the L-shaped rod 561. When the mounting plate 2 55 contacts the end of the sleeve 51, the two traction ropes 564 on the L-shaped rod 561 are in a taut state. As the electric push rod 2 continues to output, the L-shaped rod 561 moves forward along with the output end of the electric push rod 2. Since the other ends of the two L-shaped rods 561 are fixedly mounted on the corresponding guide wheels 562, the two traction ropes 564 can drive the corresponding guide wheels 562 to rotate during the forward movement of the L-shaped rods 561. Since the two guide wheels 562 are fixedly mounted on the corresponding support rods 61, the corresponding discs 62 will rotate through the transmission action of the corresponding support rods 61 during the rotation of the two guide wheels 562, thereby ensuring that the two discs 62 can rotate synchronously in opposite directions.

[0034] As one embodiment of the present invention, refer to Figure 2 Both of the discs 62 are fixedly fitted with toothed rings 623, and the two toothed rings 623 mesh with each other.

[0035] By adopting the above technical solution, on the one hand, since the two toothed rings 623 mesh with each other and are respectively fixedly sleeved on the corresponding discs 62, when one of the discs 62 drives the corresponding toothed ring 623 to rotate through the action of the support rod 61 and the guide wheel 562, the high meshing of the two toothed rings 623 can further ensure the synchronous reverse rotation of the two discs 62. Even if one of the traction ropes 564 is fatigued and worn after long-term use of the entire device, the two discs 62 can still rotate synchronously in opposite directions. On the other hand, during the bending operation of the bending head 3, the synchronous reverse rotation of the two discs 62 can provide rigid rotational force to the corresponding two bending rollers 622 set on them, thereby providing a symmetrical reverse bending force to the aluminum profile in the opposite direction of the bending head 3, thus avoiding the problem of local cross-sectional distortion during the bending process of the aluminum profile and effectively ensuring product quality.

[0036] As one embodiment of the present invention, refer to Figure 3 The disc 62 has a groove 624, and the projection of the bending roller 622 on its own axial direction is located in the groove 624. The axial length of the bending roller 622 is greater than the width of the aluminum profile.

[0037] By adopting the above technical solution, since the axial length of the bending roller 622 is greater than the width of the aluminum profile, after the aluminum profile is placed between the two bending rollers 622 on the disc 62, both ends of the two bending rollers 622 can pass over the aluminum profile, thus avoiding the end position of the bending roller 622 from causing indentations on the surface of the aluminum profile during the bending process and affecting the final quality of the product.

[0038] As one embodiment of the present invention, refer to Figure 2 , Figure 3 and Figure 6 The sleeve 51 is equipped with a contact switch 57, which is fixedly mounted on the mounting plate 54. The movable distance between the mounting plate 55 and the front end of the sleeve 51 is equal to the distance between the rear end of the movable rod 52 and the contact switch 57. The contact switch 57 is electrically connected to an external heat dissipation source. When the contact switch 57 is energized by the end of the movable rod 52, the external heat dissipation source is activated and cools the bent part of the aluminum profile. When the electric push rod 2 continues to output until the spring 53 can no longer be compressed, the contact switch 57 is energized and the external heat dissipation source is activated simultaneously.

[0039] As one embodiment of the present invention, refer to Figure 4 and Figure 5 A torsion spring 563 is movably sleeved on the support rod 61, and the two ends of the torsion spring 563 are respectively connected to the workbench 1 and the rod wall of the support rod 61.

[0040] By adopting the above technical solution, during the bending operation, the support rod 61 rotates under the action of the traction rope 564 and the guide wheel 562, which will energize the torsion spring 563. After the bending operation is completed, when the electric push rod 2 drives the L-shaped rod 561 to reset, the torsion spring 563 can drive the corresponding support rod 61 to rotate in the opposite direction to reset through its own elasticity, thereby avoiding the traction rope 564 and the guide wheel 562 from becoming loose.

[0041] Working principle:

[0042] First, the aluminum profile is placed on the auxiliary bending assembly 6, which is rotatably supported by two support rods 61, so that both ends of the aluminum profile are positioned between the two corresponding bending rollers 622 on each disc 62. After the electric push rod 2 is started, its output end drives the mounting plate 1 54 forward. Since the mounting plate 1 54 is fixedly connected to the sleeve 51 and the mounting plate 2 55 is fixedly connected to the movable rod 52, and the spring 53 is set between the mounting plate 1 54 and the mounting plate 2 55, the flexible drive assembly 5 synchronously drives the bending head 3 installed at the front end of the movable rod 52 forward and into contact with the surface of the aluminum profile. On the one hand, due to the resistance of the aluminum profile, the bending head 3 is compressed as the electric push rod 2 continues to output, achieving flexible contact and buffering. When the mounting plate 2 55 contacts the front end of the sleeve 51, the contact switch 57 is activated by the end of the movable rod 52. The external heat source is connected to cool the bending area of ​​the aluminum profile. On the other hand, when the spring 53 is fully compressed until the mounting plate 55 contacts the sleeve 51, the electric push rod 2 pulls the guide wheel 562 at the bottom of the auxiliary bending assembly 6 through the L-shaped rod 561 fixed to its output end and the traction rope 564, so that the support rod 61 drives the disc 62 to rotate. During this process, the two meshing toothed rings 623 ensure that the two discs 62 drive the corresponding bending rollers 622 to rotate synchronously in opposite directions. The bending rollers 622 provide a hard driving force and reverse support to the aluminum profile at symmetrical positions on both sides of the bending head 3 to avoid local cross-sectional distortion. After the bending operation is completed and the aluminum profile is removed, the electric push rod 2 drives the L-shaped rod 561 to reset, and the torsion spring 563 releases its elastic force to drive the support rod 61 to rotate in the opposite direction to reset, so as to carry out the next bending operation.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC machining aluminum product bending and forming device, comprising a worktable (1), an electric push rod (2), and a bending head (3), for bending aluminum profiles (4), wherein the electric push rod (2) is fixedly mounted on the worktable (1), characterized in that: It also includes a flexible drive assembly (5) and an auxiliary bending assembly (6). The flexible drive assembly (5) is located at the output end of the electric push rod (2) and connected to the bending head (3). The auxiliary bending assembly (6) is located on the worktable (1). The aluminum profile (4) is placed on the auxiliary bending assembly (6). When the electric push rod (2) is started, it drives the bending head (3) to move forward through the flexible drive assembly (5) and contact the surface of the aluminum profile (4). When the aluminum profile (4) moves forward and is blocked by the auxiliary bending assembly (6), the bending head (3) and the flexible drive assembly (5) continue to follow the output end of the electric push rod (2) to move forward and drive the auxiliary bending assembly (6) to perform auxiliary bending on the aluminum profile (4) at symmetrical positions on both sides of the bending head (3).

2. The CNC aluminum product bending and forming device according to claim 1, characterized in that: The flexible drive assembly (5) includes a sleeve (51), a movable rod (52), a spring (53), a first mounting plate (54), a second mounting plate (55), and a transmission mechanism (56). The sleeve (51) is movably sleeved with the movable rod (52). The first mounting plate (54) is fixedly installed at the output end of the electric push rod (2). The second mounting plate (55) is fixedly sleeved on the movable rod (52). The spring (53) is fixedly installed between the first mounting plate (54) and the second mounting plate (55), and is movably sleeved with the sleeve (51) and the movable rod (52). The bending head (3) is detachably installed at the front end of the movable rod (52). The transmission mechanism (56) is installed at the output end of the electric push rod (2) and connected to the auxiliary bending assembly (6).

3. The CNC aluminum product bending and forming device according to claim 2, characterized in that: The auxiliary bending assembly (6) includes a support rod (61) and a disc (62). There are two support rods (61) and two discs (62). The two support rods (61) are rotatably mounted on the worktable (1). The two discs (62) are respectively fixedly mounted on the corresponding support rods (61). Two positioning rods (621) are rotatably mounted on the discs (62). Bending rollers (622) are fixedly mounted on the two positioning rods (621).

4. The CNC aluminum product bending and forming device according to claim 3, characterized in that: The transmission mechanism (56) includes an L-shaped rod (561) and a guide wheel (562). A strip-shaped opening (11) is provided on the workbench (1). The L-shaped rod (561) is movably inserted into the strip-shaped opening (11), and its upper end is fixedly connected to the output end of the electric push rod (2). There are two guide wheels (562) and they are respectively fixedly installed at the lower end of the corresponding support rod (61). Two traction ropes (564) are provided on the L-shaped rod (561), and the other end of each traction rope (564) is connected to the corresponding guide wheel (562).

5. The CNC aluminum product bending and forming device according to claim 3, characterized in that: Both of the discs (62) are fixedly fitted with toothed rings (623), and the two toothed rings (623) mesh with each other.

6. The CNC aluminum product bending and forming device according to claim 5, characterized in that: The disc (62) has a groove (624) and the projection of the bending roller (622) on its own axial direction is located in the groove (624). The axial length of the bending roller (622) is greater than the width of the aluminum profile (4).

7. The CNC aluminum product bending and forming device according to claim 2, characterized in that: The sleeve (51) is equipped with a contact switch (57), which is fixedly mounted on the first mounting plate (54). The movable distance between the second mounting plate (55) and the front end of the sleeve (51) is equal to the distance between the rear end of the movable rod (52) and the contact switch (57).

8. The CNC aluminum product bending and forming device according to claim 3, characterized in that: A torsion spring (563) is movably sleeved on the support rod (61), and the two ends of the torsion spring (563) are respectively connected to the workbench (1) and the rod wall of the support rod (61).

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