Metal plate bending machine

Abstract

The invention relates to the technical field of bending equipment, in particular to a metal plate bending machine which comprises a workbench and a bending plate, the side wall of the bending plate is attached to the side wall of the workbench, the workbench is hinged to the upper end face of the bending plate through a hinge, and the upper end face of the workbench and the upper end face of the bending plate are located on the same horizontal plane. A lower pressing plate parallel to the workbench is arranged on the workbench, a lifting assembly used for enabling the lower pressing plate to vertically move is arranged on the workbench, two limiting plates located on the side, away from the bending plate, of the lower pressing plate are arranged on the workbench, and the two limiting plates are located on the two sides of the workbench. The workbench is provided with a moving assembly used for enabling the two limiting plates to be close to or away from each other. And the length direction of the metal plate is parallel to the length direction of the workbench, the two sides of the metal plate are limited, and the stability of the metal plate in the bending process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of bending equipment, and in particular to a metal sheet bending machine. Background Art

[0002] A bending machine is a machine used to bend metal sheets, usually consisting of a bracket, a workbench and a clamping plate. The workbench is set on the bracket, and the workbench consists of a base and a pressing plate. The base is connected to the clamping plate by a hinge.

[0003] Related technology can refer to the Chinese patent with authorization announcement number CN207138577U, which discloses an adjustable bending machine, including a base and a fixed table, the bottom end of the fixed table is fixedly connected to the middle of the top of the base, the top of one side of the fixed table is hinged to one side of the bending plate through a hinge, the other side of the bending plate is fixedly provided with a handle, the side of the bending plate is provided with a fixed plate, one side of the fixed plate is fixedly connected to the top of one side of the fixed table, the side of the fixed plate is provided with angle markings, the four corners of the top of the fixed table are respectively connected to the four corners of the pressing plate by four screws, two fixed blocks are fixedly provided at the top of the pressing plate, and an opening is opened in the middle of the fixed block.

[0004] With regard to the above-mentioned related technologies, the metal sheet is generally a plate with a rectangular or square cross-section. The metal sheet to be bent is only fixed on the fixed table by a fixing block, and the two sides of the metal sheet cannot be limited. When the metal sheet is manually placed on the fixed table and the metal sheet is fixed, the metal sheet is easily offset on the fixed table, causing the bending position of the metal sheet to shift, making the bent product unusable, resulting in waste. Summary of the invention

[0005] In order to limit the two sides of the metal sheet and improve the stability of the metal sheet bending process, the present application provides a metal sheet bending machine.

[0006] The present application provides a metal sheet bending machine, which adopts the following technical solution: A metal sheet bending machine comprises a workbench and a bending plate, wherein the side wall of the bending plate is in contact with the side wall of the workbench, the workbench and the upper end surface of the bending plate are hinged by a hinge, the upper end surface of the workbench and the bending plate are located in the same horizontal plane, a lower pressure plate parallel to the workbench is arranged on the workbench, a lifting component for vertically moving the lower pressure plate is arranged on the workbench, two limit plates are arranged on the side of the lower pressure plate away from the bending plate, the two limit plates are located on both sides of the workbench, and a moving component for moving the two limit plates closer to or away from each other is arranged on the workbench.

[0007] By adopting the above technical solution, the metal sheet to be bent is placed between the workbench and the lower pressure plate. The bending position of the metal sheet is located at the connection between the workbench and the bending plate. The two limit plates are moved toward the metal sheet through the moving component until the limit plates abut against the side walls of the metal sheet, so that the length direction of the metal sheet is parallel to the length direction of the workbench. The two sides of the metal sheet are limited to improve the stability of the metal sheet bending process. The lower pressure plate is moved downward by the lifting component to fix the metal sheet, and the bending plate is flipped upward to perform the bending operation on the metal sheet.

[0008] Optionally, the lifting assembly includes a lifting screw and a lifting guide rod, which are installed on both sides of the workbench in the vertical direction, the lifting screw passes through the lower pressure plate and is threadedly connected to the lower pressure plate, and the lifting guide rod passes through the lower pressure plate and is slidably connected to the lower pressure plate.

[0009] By adopting the above technical solution, the lifting screw is rotated, and the lower pressure plate is lifted and moved along the length direction of the lifting screw as the lifting screw rotates. The lower pressure plate moves downward until the lower end surface of the lower pressure plate abuts against the upper end surface of the metal plate. The lower pressure plate fixes the metal plate, and the lifting guide rod limits and guides the lifting of the lower pressure plate, thereby improving the stability of the lifting and moving process of the lower pressure plate.

[0010] Optionally, the moving component includes a bidirectional screw and two connecting plates. A limiting groove is provided on the workbench along the length direction of the lower pressure plate. The bidirectional screw is installed in the limiting groove and is rotatably connected to the workbench. The two connecting plates are connected to the two limiting plates. The two connecting plates are located on both sides of the bidirectional screw and are threadedly connected to the bidirectional screw.

[0011] By adopting the above technical solution, the two connecting plates are moved closer to or farther away from each other along the length direction of the two-way screw by rotating the two-way screw. The connecting plates are connected to the limit plates. The limit plates are driven to move during the movement of the connecting plates. The limit plates on both sides abut against the two sides of the metal plate to limit the metal plate.

[0012] Optionally, a placement cavity connected to the limit groove is opened in the workbench, and the lifting screw extends into the placement cavity in the direction of the workbench, and a first bevel gear is provided at one end of the lifting screw located in the placement cavity, and a second bevel gear is meshed and connected to the first bevel gear, and a first pulley is coaxially fixedly connected to the second bevel gear, and a second pulley is coaxially fixedly provided on the bidirectional screw, and the first pulley and the second pulley are connected by a linkage belt, and a buffer assembly is provided between the limit plate and the connecting plate, and the buffer assembly is used to adjust the distance between the limit plate and the connecting plate.

[0013] By adopting the above technical solution, when the lifting screw rotates to drive the lower pressure plate to move downward, the first bevel gear rotates along with the lifting screw, and the first pulley is driven to rotate through the second bevel gear, and the bidirectional screw is driven to rotate through the linkage belt and the second pulley, so that the connecting plate and the limit plate on the bidirectional screw are close to each other to limit the two sides of the metal plate, and the distance between the limit plate and the connecting plate is adjusted by the buffer assembly.

[0014] Optionally, the buffer assembly includes a buffer rod, a buffer tube and a buffer spring, the buffer tube is installed on the side of the connecting plate close to the limit plate, the buffer rod is installed on the side of the limit plate close to the connecting plate, the end of the buffer rod away from the limit plate extends into the buffer tube, the buffer spring is sleeved outside the buffer rod and the buffer tube, and both ends of the buffer spring are fixedly connected to the limit plate and the connecting plate.

[0015] By adopting the above technical solution, when the limit plates on both sides abut against the side walls of the metal plate and the lower pressure plate has not yet abutted against the upper end surface of the metal plate, the lifting screw continues to rotate, and the limit plates abutting against the side walls of the metal plate move toward the connecting plate. The buffer spring is compressed, so that the lower pressure plate can continue to move downward toward the metal plate, and the buffer rod moves in the buffer tube, thereby improving the stability of the limit plate when moving during the compression of the buffer spring.

[0016] Optionally, a through hole communicating with the buffer tube is formed on the connecting plate, and the length of the buffer rod is greater than the length of the buffer tube.

[0017] By adopting the above technical solution, when the buffer rod moves toward the connecting plate, the buffer rod can pass through the connecting plate through the through hole, thereby reducing the distance between the connecting plate and the limiting plate.

[0018] Optionally, guide blocks are provided on both sides of the limiting plate, guide grooves located on both sides of the limiting groove are opened in the workbench, and the guide blocks are located in the guide grooves and are movably connected to the workbench.

[0019] By adopting the above technical solution, when the limit plate moves in the guide groove, the guide block is located in the guide groove and moves along the length direction of the guide groove. The guide block limits the movement of the limit plate, thereby improving the stability of the limit plate movement process.

[0020] Optionally, a buffer pad is provided on the end surfaces of the two limit plates close to each other.

[0021] By adopting the above technical solution, the buffer pad provides buffering for both sides of the limit plate and the metal plate. When the limit plate moves toward the metal plate, the buffer pad abuts against the metal plate to avoid direct contact between the limit plate and the metal plate, thereby reducing the possibility of damage to the metal plate.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Place the metal sheet to be bent between the workbench and the lower pressing plate. The bending position of the metal sheet is located at the connection between the workbench and the bending plate. Move the two limit plates toward the metal sheet through the moving assembly until the limit plates abut against the side walls of the metal sheet, so that the length direction of the metal sheet is parallel to the length direction of the workbench. Limit the two sides of the metal sheet to improve the stability of the metal sheet bending process. Move the lower pressing plate downward through the lifting assembly to fix the metal sheet, and flip the bending plate upward to bend the metal sheet. 2. When the lifting screw rotates and drives the lower pressure plate to move downward, the first bevel gear rotates along with the lifting screw, and drives the first pulley to rotate through the second bevel gear, and drives the bidirectional screw to rotate through the linkage belt and the second pulley, so that the connecting plate and the limit plate on the bidirectional screw are close to each other to limit the two sides of the metal plate, and the distance between the limit plate and the connecting plate is adjusted by the buffer assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a metal sheet bending machine.

[0024] Figure 2 It is a schematic diagram of the internal structure of a metal sheet bending machine.

[0025] Figure 3 The invention is a schematic diagram used to show the connection relationship between the first bevel gear and the second bevel gear in a metal sheet bending machine.

[0026] Explanation of the accompanying drawings: 1. workbench; 11. limit groove; 2. bending plate; 21. hinge; 22. handle; 3. lower pressure plate; 4. lifting assembly; 41. lifting screw; 411. rotating disk; 412. first bevel gear; 413. second bevel gear; 4131. connecting shaft; 4132. first pulley; 42. lifting guide rod; 5. moving assembly; 51. bidirectional screw; 511. second pulley; 512. linkage belt; 52. connecting plate; 521. through hole; 6. limit plate; 61. guide block; 62. buffer pad; 7. buffer assembly; 71. buffer rod; 72. buffer tube; 73. buffer spring. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0028] The embodiment of the present application discloses a metal sheet bending machine.

[0029] Reference Figure 1A metal sheet bending machine includes a workbench 1 and a bending plate 2. The side wall of the bending plate 2 is in contact with the side wall of the workbench 1. The workbench 1 and the upper end surface of the bending plate 2 are hinged through a hinge 21. The upper end surfaces of the workbench 1 and the bending plate 2 are located in the same horizontal plane. The bending plate 2 can rotate upward with the connection position with the workbench 1 as the axis through the hinge 21.

[0030] Reference Figure 1 The bending plate 2 is fixedly connected to one side away from the workbench 1 with two parallel handles 22 , and the handles 22 are used to facilitate the staff to rotate the bending plate 2 .

[0031] Reference Figure 1 The workbench 1 is provided with a lower pressing plate 3 parallel to the workbench 1, and the workbench 1 is provided with a lifting assembly 4 for vertically moving the lower pressing plate 3. The lifting assembly 4 includes a lifting screw 41 and a lifting guide rod 42. The lifting screw 41 and the lifting guide rod 42 are installed on both sides of the workbench 1 in the vertical direction. The lifting screw 41 passes through the lower pressing plate 3 and is threadedly connected with the lower pressing plate 3. The lifting guide rod 42 passes through the lower pressing plate 3 and is slidably connected with the lower pressing plate 3. The metal sheet to be bent is placed between the workbench 1 and the lower pressing plate 3. The bending position of the metal sheet is located at the connection between the workbench 1 and the bending plate 2. The lifting screw 41 is rotated, and the lower pressing plate 3 is lifted and moved along the length direction of the lifting screw 41 along with the rotation of the lifting screw 41. The lower pressing plate 3 moves downward until the lower end surface of the lower pressing plate 3 abuts against the upper end surface of the metal sheet. The lower pressing plate 3 fixes the metal sheet, and the lifting guide rod 42 limits and guides the lifting of the lower pressing plate 3, thereby improving the stability of the lifting and moving process of the lower pressing plate 3.

[0032] Reference Figure 1 A rotating disk 411 is installed at one end of the lifting screw 41 away from the workbench 1, and the lifting screw 41 can be easily rotated by the rotating disk 411.

[0033] Reference Figure 1 and Figure 2, two limit plates 6 are movably connected on the workbench 1 and are located on the side of the lower pressing plate 3 away from the bending plate 2. The two limit plates 6 are located on both sides of the workbench 1. A moving assembly 5 for moving the two limit plates 6 closer to or farther away from each other is provided on the workbench 1. The moving assembly 5 includes a bidirectional screw 51 and two connecting plates 52. A limit groove 11 is provided on the workbench 1 along the length direction of the lower pressing plate 3. The bidirectional screw 51 is installed in the limit groove 11 and is rotatably connected to the workbench 1. The two connecting plates 52 are connected to the corresponding limit plates 6. The two connecting plates 52 are located on both sides of the bidirectional screw 51 and are both threadedly connected to the bidirectional screw 51. By rotating the bidirectional screw 51, the two connecting plates 52 are moved closer to or farther away from each other along the length direction of the bidirectional screw 51. The connecting plates 52 are connected to the limit plates 6. During the movement of the connecting plates 52, the limit plates 6 are driven to move. The two limit plates 6 abut against both sides of the metal sheet to limit the metal sheet, thereby improving the stability of the metal sheet bending process.

[0034] Reference Figure 2 and Figure 3 A placement cavity connected to the limiting groove 11 is opened in the workbench 1, and the lifting screw 41 extends into the placement cavity in the direction of the workbench 1. One end of the lifting screw 41 located in the placement cavity is coaxially fixedly connected with a first bevel gear 412, and the first bevel gear 412 is meshed with a second bevel gear 413. The second bevel gear 413 is coaxially fixedly connected with a connecting shaft 4131, and the connecting shaft 4131 is rotatably connected to the workbench 1. The end of the connecting shaft 4131 away from the second bevel gear 413 is coaxially fixedly connected with a first pulley 4132, and the bidirectional screw 51 is coaxially fixedly connected with a second pulley 511. The first pulley 4132 and the second pulley 511 are connected by a linkage belt 512. When the lifting screw 41 rotates to drive the lower pressure plate 3 to move downward, the first bevel gear 412 rotates along with the lifting screw 41, and drives the first pulley 4132 to rotate through the second bevel gear 413, and drives the bidirectional screw 51 to rotate through the linkage belt 512 and the second pulley 511, so that the connecting plate 52 and the limit plate 6 on the bidirectional screw 51 are close to each other to limit the two sides of the metal plate.

[0035] Reference Figure 2 and Figure 3A buffer assembly 7 is provided between the limit plate 6 and the connecting plate 52. The buffer assembly 7 is used to adjust the distance between the limit plate 6 and the connecting plate 52. The buffer assembly 7 includes a buffer rod 71, a buffer tube 72 and a buffer spring 73. The buffer tube 72 is installed on the side of the connecting plate 52 close to the limit plate 6. The buffer rod 71 is installed on the side of the limit plate 6 close to the connecting plate 52. The end of the buffer rod 71 away from the limit plate 6 extends into the buffer tube 72. The buffer spring 73 is sleeved outside the buffer rod 71 and the buffer tube 72, and both ends of the buffer spring 73 are fixedly connected to the limit plate 6 and the connecting plate 52. When the limit plates 6 on both sides abut against the side walls of the metal plate and the lower pressure plate 3 has not yet abutted against the upper end surface of the metal plate, the lifting screw 41 continues to rotate, and the limit plates 6 abutting against the side walls of the metal plate move toward the connecting plate 52, and the buffer spring 73 is compressed, so that the lower pressure plate 3 can continue to move downward toward the metal plate, and the buffer rod 71 moves in the buffer tube 72, thereby improving the stability of the limit plate 6 when moving during the compression process of the buffer spring 73.

[0036] Reference Figure 3 The radius of the first pulley 4132 is greater than the radius of the second pulley 511. When the lifting screw 41 rotates one circle, the bidirectional screw 51 rotates several circles. The number of rotations of the bidirectional screw 51 is related to the radius ratio between the first pulley 4132 and the second pulley 511. In the process of the lower pressure plate 3 moving downward, before the lower end face of the lower pressure plate 3 abuts against the upper end face of the metal sheet, the limit plates 6 on both sides have already abutted against the two sides of the metal sheet to limit the two sides of the metal sheet.

[0037] Reference Figure 2 and Figure 3 The connecting plate 52 is provided with a through hole 521 connected to the buffer tube 72, and the length of the buffer rod 71 is greater than the length of the buffer tube 72. When the buffer rod 71 moves toward the connecting plate 52, the buffer rod 71 can pass through the connecting plate 52 through the through hole 521, thereby reducing the distance between the connecting plate 52 and the limiting plate 6.

[0038] Reference Figure 3 , guide blocks 61 are fixedly connected on both sides of the limit plate 6, and guide grooves are provided on both sides of the limit groove 11 in the workbench 1, and the guide blocks 61 are located in the guide grooves and are movably connected to the workbench 1. When the limit plate 6 moves in the guide groove, the guide blocks 61 are located in the guide groove and move along the length direction of the guide groove, and the guide blocks 61 limit the movement of the limit plate 6, thereby improving the stability of the movement process of the limit plate 6.

[0039] Reference Figure 3, buffer pads 62 are fixedly installed on the end surfaces of the two limit plates 6 on the side close to each other. The buffer pads 62 provide buffering for both sides of the limit plates 6 and the metal sheet. When the limit plates 6 move toward the metal sheet, the buffer pads 62 abut against the metal sheet to avoid direct contact between the limit plates 6 and the metal sheet, thereby reducing the possibility of damage to the metal sheet.

[0040] The implementation principle of a metal sheet bending machine in an embodiment of the present application is: a metal sheet to be bent is placed between a workbench 1 and a lower pressure plate 3, and the bending position of the metal sheet is located at the connection between the workbench 1 and the bending plate 2. The two limit plates 6 are moved toward the direction of the metal sheet through a moving component 5 until the limit plates 6 abut against the side walls of the metal sheet, so that the length direction of the metal sheet is parallel to the length direction of the workbench 1, and the two sides of the metal sheet are limited to improve the stability of the metal sheet bending process. The lower pressure plate 3 is moved downward by the lifting component 4 to fix the metal sheet, and the bending plate 2 is flipped upward to perform a bending operation on the metal sheet.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sheet metal bending machine, characterized in that: The invention comprises a workbench (1) and a bending plate (2), wherein the side wall of the bending plate (2) is in contact with the side wall of the workbench (1), the workbench (1) and the bending plate (2) are hingedly connected via a hinge (21), the upper end surfaces of the workbench (1) and the bending plate (2) are located in the same horizontal plane, the workbench (1) is provided with a lower pressing plate (3) parallel to the workbench (1), the workbench (1) is provided with a lifting assembly (4) for vertically moving the lower pressing plate (3), the workbench (1) is provided with two limit plates (6) located on the side of the lower pressing plate (3) away from the bending plate (2), the two limit plates (6) are located on both sides of the workbench (1), and the workbench (1) is provided with a moving assembly (5) for moving the two limit plates (6) closer to or farther away from each other.

2. A sheet metal bending machine according to claim 1, characterized in that: The lifting assembly (4) comprises a lifting screw (41) and a lifting guide rod (42), wherein the lifting screw (41) and the lifting guide rod (42) are installed on both sides of the workbench (1) in a vertical direction, wherein the lifting screw (41) passes through the lower pressing plate (3) and is threadedly connected to the lower pressing plate (3), and the lifting guide rod (42) passes through the lower pressing plate (3) and is slidably connected to the lower pressing plate (3).

3. A metal sheet bending machine according to claim 2, characterized in that: The moving assembly (5) comprises a bidirectional screw (51) and two connecting plates (52); a limiting groove (11) is provided on the workbench (1) along the length direction of the lower pressing plate (3); the bidirectional screw (51) is installed in the limiting groove (11) and is rotatably connected to the workbench (1); the two connecting plates (52) are connected to the two limiting plates (6); the two connecting plates (52) are located on both sides of the bidirectional screw (51) and are both threadedly connected to the bidirectional screw (51).

4. A sheet metal bending machine according to claim 3, characterized in that: The workbench (1) is provided with a placement cavity connected to the limiting groove (11); the lifting screw (41) extends into the placement cavity in the direction of the workbench (1); a first bevel gear (412) is provided at one end of the lifting screw (41) located in the placement cavity; a second bevel gear (413) is meshedly connected to the first bevel gear (412); a first belt pulley (4132) is coaxially fixedly connected to the second bevel gear (413); a second belt pulley (511) is coaxially fixedly provided on the bidirectional screw (51); the first belt pulley (4132) and the second belt pulley (511) are connected via a linkage belt (512); a buffer assembly (7) is provided between the limiting plate (6) and the connecting plate (52); the buffer assembly (7) is used to adjust the distance between the limiting plate (6) and the connecting plate (52).

5. A sheet metal bending machine according to claim 4, characterized in that: The buffer assembly (7) comprises a buffer rod (71), a buffer tube (72) and a buffer spring (73); the buffer tube (72) is mounted on a side of the connecting plate (52) close to the limiting plate (6); the buffer rod (71) is mounted on a side of the limiting plate (6) close to the connecting plate (52); one end of the buffer rod (71) away from the limiting plate (6) extends into the buffer tube (72); the buffer spring (73) is sleeved outside the buffer rod (71) and the buffer tube (72); and both ends of the buffer spring (73) are fixedly connected to the limiting plate (6) and the connecting plate (52).

6. A sheet metal bending machine according to claim 5, characterized in that: The connecting plate (52) is provided with a through hole (521) communicating with the buffer tube (72), and the length of the buffer rod (71) is greater than the length of the buffer tube (72).

7. The metal sheet bending machine according to claim 5, characterized in that: Guide blocks (61) are arranged on both sides of the limiting plate (6), and guide grooves located on both sides of the limiting groove (11) are opened in the workbench (1), and the guide blocks (61) are located in the guide grooves and are movably connected to the workbench (1).

8. The metal sheet bending machine according to claim 1, characterized in that: A buffer pad (62) is provided on the end surfaces of the two limit plates (6) that are close to each other.

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