Crankshaft connecting rod bending structure for metal plate machining

Abstract

The invention relates to the technical field of metal plate machining, in particular to a crankshaft connecting rod bending structure for metal plate machining, which comprises a machine base, a pressing and fixing mechanism is arranged on the front side of the machine base, and a bending mechanism is arranged in the pressing and fixing mechanism. A crankshaft connecting rod driving mechanism used for driving the pressing and fixing mechanism to float up and down and driving the bending mechanism to float up and down is arranged in the machine base and the pressing and fixing mechanism. According to the bending machine for bending the metal plate, the crankshaft transmission mode is adopted for driving the pressing and fixing mechanism and the bending mechanism to operate, compared with a traditional vertical motor or air cylinder driving mode, the needed motor power is smaller, the number is smaller compared with the traditional driving mode, energy consumption is reduced, and the bending efficiency is improved. And in addition, the equipment is smaller in size and more flexible in the aspect of the complex metal plate bending process, and the metal plate bending machining efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of metal sheet processing technology, and in particular to a crankshaft connecting rod bending structure for metal sheet processing. Background Technology

[0002] During the production and processing of metal sheets, rectangular raw material sheets of corresponding sizes need to be cut according to the customized dimensions of the product. Then, the edges of the metal sheets are bent into different angles and shapes through a feeding mechanism and a bending mechanism. In this process, the bending of the metal sheet includes bending the four edges of the rectangular metal sheet. Generally, the bending blade in the bending mechanism contacts the area to be bent on the edge of the metal sheet and applies hard pressure, including upward pressure (bending upward) and downward pressure (bending downward). Traditional bending blades are generally driven by power equipment such as vertical cylinders or high-power motors. Due to the large bending force, the power required by traditional power equipment is also very large, and the transmission power equipment is also very large, resulting in a large overall bending equipment size. In actual use, it not only requires a lot of energy and is not energy-efficient and environmentally friendly, but also makes subsequent maintenance inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide a crankshaft connecting rod bending structure for metal sheet processing. The bending machine designed in this application for bending metal sheets adopts a crankshaft transmission method to drive the pressing and fixing mechanism and the bending mechanism. Compared with the traditional vertical motor or cylinder drive method, the required motor power is smaller and fewer in number, reducing energy consumption. Furthermore, the equipment of this application is more compact and more flexible in dealing with complex metal sheet bending processes, resulting in higher metal sheet bending processing efficiency, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a crankshaft connecting rod bending structure for metal sheet processing, comprising a base, a pressing and fixing mechanism provided on the front side of the base, and a bending mechanism provided inside the pressing and fixing mechanism, wherein the base and the pressing and fixing mechanism are equipped with a crankshaft connecting rod driving mechanism for driving the pressing and fixing mechanism to float up and down and driving the bending mechanism to float up and down. The crankshaft connecting rod drive mechanism further drives the displacement of the pressing and fixing mechanism and the bending mechanism by driving the crankshaft to rotate. The pressing and fixing mechanism includes a fixing plate located on the base, and at least four sets of connecting arms are distributed at a distance on the rear side of the fixing plate. The connecting arms are fixedly connected to the fixing plate. A connecting seat is rotatably connected to the rear end of the connecting arm. The connecting seat is fixedly connected to the upper end face of the base. An upper pressing knife is installed on the lower side of the fixing plate. A lower pressing platform matching the upper pressing knife is fixedly connected to the front side of the upper end face of the base at a position corresponding to the upper pressing knife. A bending mechanism is provided on the upper end face of the machine base at the rear side between the upper pressure knife and the lower pressure table; The bending mechanism includes a bending fixed seat that floats up and down on the machine base. The front side of the bending fixed seat has a U-shaped structure design, and an upper bending knife is fixedly connected to the upper side of the U-shaped front end of the bending fixed seat, and a lower bending knife is fixedly connected to the lower side.

[0005] Preferably, the rear end of the bending fixing seat is symmetrically fixedly connected with connecting ear plates, the connecting ear plates are movably connected to the machine base, and the lower end face of the bending fixing seat is symmetrically fixedly connected with connecting seats two, and the bending fixing seat is connected to the crankshaft connecting rod drive mechanism through connecting seats two and connecting ear plates.

[0006] Preferably, the four connecting arms are arranged in pairs, and the pressing and fixing mechanism is connected to the crankshaft connecting rod drive mechanism through the rear end of the connecting arm and the middle position of a pair of connecting arms.

[0007] Preferably, the crankshaft connecting rod drive mechanism includes drive motor one, drive motor two, drive motor three, and drive motor four, wherein drive motor one and drive motor four are used to drive the bending mechanism, while drive motor two and drive motor three are used to drive the pressing and fixing mechanism.

[0008] Preferably, a hole is provided in the middle of two connecting arms in a set of connecting arms, and a crankshaft one is rotatably connected in the hole. One end of the crankshaft one is fixedly connected to the output end of the drive motor three. A connecting rod one is rotatably connected to the outside of the crankshaft one. A crankshaft two is rotatably connected to the bottom of the connecting rod one. One end of the crankshaft two is fixedly connected to one end of the drive motor two. Both ends of the connecting rod one are circular bearings with built-in bearings. The drive motor two and the drive motor three rotate synchronously. A movable groove is provided through the bending fixing seat, and the connecting rod one extends downward through the movable groove to connect with the crankshaft two.

[0009] Preferably, a crankshaft three is rotatably connected to the inner part of the base and the connecting seat two designed on the lower end face of the bending and fixing seat. A connecting rod two is rotatably connected to the crankshaft three, and the top of the connecting rod two is rotatably connected to the connecting seat two.

[0010] Preferably, a crankshaft four is rotatably connected to the interior of the base and the corresponding position of the connecting lug at the rear end of the bending and fixing seat. The connecting lug is rotatably connected to the crankshaft four. A drive motor four is fixedly connected to both ends of the crankshaft four, and the drive motor four is fixed to the base.

[0011] Preferably, both the second drive motor and the first drive motor are fixed to the base, and the third drive motor is fixed to the connecting arm.

[0012] Compared with the prior art, the beneficial effects of the present invention are: The bending machine designed in this application for bending metal sheets uses a crankshaft drive to drive the pressing and fixing mechanism and the bending mechanism. Compared with the traditional vertical motor or cylinder drive, the required motor power is smaller and fewer in number, reducing energy consumption. In addition, the equipment of this application is more compact and more flexible in dealing with complex metal sheet bending processes, resulting in higher metal sheet bending processing efficiency. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is an overall structural view of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a bottom view of the overall structure of the present invention; Figure 4 This is a rear view of the overall structure of the present invention; Figure 5 This is a partial cross-sectional view of the overall structure of the present invention; Figure 6 This is a structural view of the base, crankshaft 1, and drive motor 3 of the present invention; Figure 7 This is a rear view of the fixing plate and connecting arm of the present invention; Figure 8 This is a front view of the base and crankshaft of the present invention; Figure 9 This is a structural view of the bending fixing seat of the present invention; Figure 10 This is a rear view of the bending fixing seat of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Base; 2. Drive motor one; 3. Drive motor two; 4. Drive motor three; 5. Connecting arm; 6. Fixing plate; 7. Upper pressure knife; 8. Lower pressure table; 9. Connecting seat one; 10. Crankshaft one; 11. Connecting rod one; 12. Crankshaft two; 13. Crankshaft three; 14. Connecting rod two; 15. Bending fixing seat; 16. Crankshaft four; 17. Upper bending knife; 18. Lower bending knife; 19. Connecting seat two; 20. Connecting ear plate; 21. Drive motor four. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1 to 10 The present invention provides a technical solution: A crankshaft connecting rod bending structure for metal sheet processing includes a base 1. A pressing and fixing mechanism is provided on the front side of the base 1, and a bending mechanism is provided inside the pressing and fixing mechanism. A crankshaft connecting rod driving mechanism is built into the base 1 and the pressing and fixing mechanism for driving the pressing and fixing mechanism to float up and down and driving the bending mechanism to float up and down. The crankshaft connecting rod drive mechanism further drives the displacement of the pressing and fixing mechanism and the bending mechanism by driving the crankshaft to rotate. The pressing and fixing mechanism includes a fixing plate 6 located on the base 1, and at least four sets of connecting arms 5 are distributed at a distance on the rear side of the fixing plate 6, and the connecting arms 5 are fixedly connected to the fixing plate 6. The rear end of the connecting arm 5 is rotatably connected to a connecting seat 9, and the connecting seat 9 is fixedly connected to the upper end face of the base 1. An upper pressing knife 7 is installed on the lower side of the fixing plate 6, and a lower pressing table 8 matching the upper pressing knife 7 is fixedly connected to the front side of the upper end face of the base 1 at a position corresponding to the upper pressing knife 7. A bending mechanism is provided on the upper end face of the base 1 at the rear side between the upper pressure knife 7 and the lower pressure table 8; The bending mechanism includes a bending fixing seat 15 that floats up and down on the base 1. The front side of the bending fixing seat 15 has a U-shaped structure design. An upper bending knife 17 is fixedly connected to the upper side of the U-shaped front end of the bending fixing seat 15, and a lower bending knife 18 is fixedly connected to the lower side.

[0018] Specifically, the rear end of the bending fixing seat 15 is symmetrically fixedly connected with a connecting ear plate 20, the connecting ear plate 20 is movably connected to the machine base 1, and the lower end face of the bending fixing seat 15 is symmetrically fixedly connected with a connecting seat 2 19. The bending fixing seat 15 is connected to the crankshaft connecting rod drive mechanism through the connecting seat 2 19 and the connecting ear plate 20.

[0019] Specifically, the four connecting arms 5 are arranged in pairs, and the pressing and fixing mechanism is connected to the crankshaft connecting rod drive mechanism through the rear end of the connecting arm 5 and the middle position of a group of connecting arms 5.

[0020] Specifically, the crankshaft connecting rod drive mechanism includes drive motor 2, drive motor 3, drive motor 4, and drive motor 21. Drive motor 2 and drive motor 21 are used to drive the bending mechanism, while drive motor 3 and drive motor 4 are used to drive the pressing and fixing mechanism. Drive motor 3 and drive motor 2 are both fixed to the base 1, and drive motor 4 is fixed to the connecting arm 5.

[0021] Specifically, a hole is provided in the middle of two connecting arms 5 in a set of connecting arms 5, and a crankshaft 10 is rotatably connected in the hole. One end of the crankshaft 10 is fixedly connected to the output end of the drive motor 3 4. A connecting rod 11 is rotatably connected to the outside of the crankshaft 10. A crankshaft 2 12 is rotatably connected to the bottom of the connecting rod 11. One end of the crankshaft 2 12 is fixedly connected to one end of the drive motor 2 3. Both ends of the connecting rod 11 are circular bearings. The drive motor 2 3 and the drive motor 3 4 rotate synchronously. A movable groove is provided through the bending fixing seat 15. The connecting rod 11 extends downward through the movable groove and connects to the crankshaft 2 12.

[0022] By adopting the above technical solution, the feeding mechanism first precisely feeds the edge of the metal plate between the upper pressure knife 7 and the lower pressure table 8. At this time, the upper pressure knife 7 needs to move down to cooperate with the lower pressure table 8 to clamp the metal plate located between them, so that the bending mechanism can perform bending operations on the edge of the metal plate. Since the edge of the metal plate needs to be bent multiple times at different angles or shapes to meet the customer's product requirements, the upper pressure knife 7 needs to move up and down precisely and frequently. The traditional drive method has a slow response and requires precise control of the clamping force. Therefore, the traditional drive method has limitations. In the process of use, this application first uses an external controller for precise control. Drive motor 2 3 and drive motor 3 4 rotate synchronously, thereby driving crankshaft 2 12 and crankshaft 10 connected to drive motor 2 3 and drive motor 3 4 to rotate. When drive motor 2 3 drives crankshaft 2 12 and drive motor 3 4 to drive crankshaft 10 to rotate, crankshaft 2 12 and crankshaft 10 further drive the connecting rod 11 sleeved on its surface to move, thereby causing the connecting arm 5 to make the fixing plate 6 float up and down on the machine base 1 under the action of the connecting seat 1 9. At this time, the upper pressure knife 7 fixed at the lower end of the fixing plate 6 achieves the action of floating up and down, and cooperates with the lower pressure table 8 to clamp and fix the metal plate between the upper pressure knife 7 and the lower pressure table 8.

[0023] Specifically, a crankshaft 13 is rotatably connected to the inner part of the base 1 and the connecting seat 19 designed on the lower end face of the bending and fixing seat 15. A connecting rod 14 is rotatably connected to the crankshaft 13. The top of the connecting rod 14 is rotatably connected to the connecting seat 19. A crankshaft 16 is rotatably connected to the inner part of the base 1 and the connecting lug 20 at the rear end of the bending and fixing seat 15. The connecting lug 20 is rotatably connected to the crankshaft 16. A drive motor 21 is fixedly connected to both ends of the crankshaft 16. The drive motor 21 is fixed to the base 1.

[0024] By adopting the above technical solution, after the upper pressure knife 7 and the lower pressure table 8 clamp and fix the metal plate under the action of the corresponding driving structure, the bending mechanism needs to move in coordination with the corresponding driving structure. The upper bending knife 17 and the lower bending knife 18 designed on the upper and lower sides of the front end face of the bending fixing seat 15 realize the bending operation of the metal plate edge at different angles and different shapes. The specific working process is as follows: First, drive motor 21 drives crankshaft 16 to rotate. At this time, bending fixing seat 15 is connected to crankshaft 16 through connecting lug 20, thus causing connecting lug 20 to rotate and move. At the same time, drive motor 2 drives crankshaft 13 to rotate. At this time, connecting rod 14, which is rotatably connected to crankshaft 13, moves. The top of connecting rod 14 is connected to the bottom of bending fixing seat 15 through connecting seat 19. Thus, in conjunction with the action of drive motor 2, the bending fixing seat 15 is driven to move, thereby realizing the bending operation of the metal plate edge.

[0025] Working principle: First, the feeding mechanism precisely feeds the edge of the metal plate between the upper pressure knife 7 and the lower pressure table 8. At this time, the upper pressure knife 7 needs to move down to cooperate with the lower pressure table 8 to clamp the metal plate located between them, so that the bending mechanism can perform bending operations on the edge of the metal plate. Since the edge of the metal plate needs to be bent multiple times at different angles or shapes to meet the customer's product requirements, the upper pressure knife 7 needs to move up and down precisely and frequently. The traditional drive method has a slow response and requires precise control of the clamping force, so the traditional drive method has limitations. In the process of use, the external controller first precisely controls the synchronous rotation of drive motor 3 and drive motor 4, thereby driving crankshaft 12 connected to drive motor 3 and drive motor 4. When crankshaft 10 rotates, and drive motor 2 drives crankshaft 2 12 and drive motor 3 drives crankshaft 10 to rotate, crankshaft 2 12 and crankshaft 10 further drive the connecting rod 11 sleeved on its surface to move. As a result, under the action of connecting seat 1 9, the connecting arm 5 causes the fixing plate 6 to float up and down on the machine base 1. At this time, the upper pressure knife 7 fixed at the lower end of the fixing plate 6 floats up and down, and cooperates with the lower pressure table 8 to clamp and fix the metal plate between the upper pressure knife 7 and the lower pressure table 8. The crankshaft and connecting rod drive method adopted in this application not only makes the upper pressure knife 7 move quickly, agilely and accurately, but also makes the crankshaft and drive motor combination result in greater torque. The drive motor does not need to have a large power to achieve the corresponding drive, which is more energy-saving and environmentally friendly, and works efficiently. After the upper pressure knife 7 and the lower pressure table 8 clamp and fix the metal plate under the action of the corresponding driving structure, the bending mechanism needs to move in coordination with the corresponding driving structure. The upper bending knife 17 and the lower bending knife 18 designed on the upper and lower sides of the front end face of the bending fixing seat 15 realize the bending operation of the metal plate edge at different angles and different shapes. The specific working process is as follows: First, drive motor 421 drives crankshaft 416 to rotate. At this time, bending fixing seat 15 is connected to crankshaft 416 through connecting lug 20, thus causing connecting lug 20 to rotate and move. At the same time, drive motor 12 drives crankshaft 313 to rotate. At this time, connecting rod 22, which is rotatably connected to crankshaft 313, moves. The top of connecting rod 22 is connected to the bottom of bending fixing seat 15 through connecting seat 219. Thus, in conjunction with the action of drive motor 12, the bending fixing seat 15 is driven to move, thereby realizing the bending operation of the metal plate edge. It is worth noting that in the crankshaft connecting rod drive mechanism of the corresponding bending mechanism and pressing fixing structure designed in this application, drive motor 23 and drive motor 34 operate synchronously, and drive motor 12 and drive motor 421 also operate synchronously.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crankshaft connecting rod bending structure for processing metal sheets, comprising a base (1), characterized in that: The front side of the base (1) is provided with a pressing and fixing mechanism, and the pressing and fixing mechanism is provided with a bending mechanism. The base (1) and the pressing and fixing mechanism are equipped with a crankshaft connecting rod driving mechanism for driving the pressing and fixing mechanism to float up and down and driving the bending mechanism to float up and down. The crankshaft connecting rod drive mechanism further drives the displacement of the pressing and fixing mechanism and the bending mechanism by driving the crankshaft to rotate. The pressing and fixing mechanism includes a fixing plate (6) located on the base (1), and at least four sets of connecting arms (5) are distributed at a distance on the rear side of the fixing plate (6), and the connecting arms (5) are fixedly connected to the fixing plate (6). The rear end of the connecting arm (5) is rotatably connected to a connecting seat (9), and the connecting seat (9) is fixedly connected to the upper end face of the base (1). An upper pressing knife (7) is installed on the lower side of the fixing plate (6), and a lower pressing table (8) matching the upper pressing knife (7) is fixedly connected to the front side of the upper end face of the base (1) at a position corresponding to the upper pressing knife (7). A bending mechanism is provided on the upper end face of the machine base (1) at the rear side between the upper pressure knife (7) and the lower pressure table (8); The bending mechanism includes a bending fixing seat (15) that floats up and down on the base (1), and the front side of the bending fixing seat (15) is designed with a U-shaped structure. The upper side of the U-shaped front end of the bending fixing seat (15) is fixedly connected to an upper bending knife (17), and the lower side is fixedly connected to a lower bending knife (18).

2. The crankshaft connecting rod bending structure for metal sheet processing according to claim 1, characterized in that: The rear end of the bending fixing seat (15) is symmetrically fixedly connected with a connecting ear plate (20), the connecting ear plate (20) is movably connected to the base (1), and the lower end face of the bending fixing seat (15) is symmetrically fixedly connected with a connecting seat two (19). The bending fixing seat (15) is connected to the crankshaft connecting rod drive mechanism through the connecting seat two (19) and the connecting ear plate (20).

3. The crankshaft connecting rod bending structure for metal sheet processing according to claim 2, characterized in that: The four connecting arms (5) are arranged in pairs, and the pressing and fixing mechanism is connected to the crankshaft connecting rod drive mechanism through the rear end of the connecting arm (5) and the middle position of a group of connecting arms (5).

4. The crankshaft connecting rod bending structure for metal sheet processing according to claim 3, characterized in that: The crankshaft connecting rod drive mechanism includes drive motor one (2), drive motor two (3), drive motor three (4), and drive motor four (21), wherein drive motor one (2) and drive motor four (21) are used to drive the bending mechanism, while drive motor two (3) and drive motor three (4) are used to drive the pressing and fixing mechanism.

5. The crankshaft connecting rod bending structure for metal sheet processing according to claim 4, characterized in that: Two connecting arms (5) in a set of connecting arms (5) have holes in the middle, and crankshaft one (10) is rotatably connected in the holes. One end of crankshaft one (10) is fixedly connected to the output end of drive motor three (4). Connecting rod one (11) is rotatably connected to the outside of crankshaft one (10). Crankshaft two (12) is rotatably connected to the bottom of connecting rod one (11). One end of crankshaft two (12) is fixedly connected to one end of drive motor two (3). Both ends of connecting rod one (11) are circular bearings. Drive motor two (3) and drive motor three (4) rotate synchronously. A movable groove is opened through the bending fixing seat (15). Connecting rod one (11) extends downward through the movable groove and connects to crankshaft two (12).

6. The crankshaft connecting rod bending structure for metal sheet processing according to claim 5, characterized in that: Inside the base (1), a crankshaft (13) is rotatably connected to the connecting seat (19) designed on the lower end face of the bending and fixing seat (15). A connecting rod (14) is rotatably connected to the crankshaft (13), and the top of the connecting rod (14) is rotatably connected to the connecting seat (19).

7. The crankshaft connecting rod bending structure for metal sheet processing according to claim 6, characterized in that: Inside the base (1), a crankshaft four (16) is rotatably connected to the rear end connecting ear plate (20) of the bending fixing seat (15). The connecting ear plate (20) is rotatably connected to the crankshaft four (16). The two ends of the crankshaft four (16) are fixedly connected to the drive motor four (21), and the drive motor four (21) is fixed to the base (1).

8. The crankshaft connecting rod bending structure for metal sheet processing according to claim 7, characterized in that: Both the second drive motor (3) and the first drive motor (2) are fixed to the base (1), and the third drive motor (4) is fixed to the connecting arm (5).

Images