A bending device for automobile part framework production

Abstract

The utility model belongs to bending equipment technical field, the utility model discloses a kind of bending device for automobile parts framework production, including base and the box of fixed setting on base upper wall, main body box is fixed with in box bottom wall, detachable mould seat is equipped in the bottom wall of main body box, the outer lateral wall of main body box is fixed with symmetry hydraulic cylinder one, piston rod one is movably and closely equipped in the hydraulic cylinder one, piston rod one is corresponding with mould seat, drive piston rod one by hydraulic pump, make fixed cone and conical groove cone surface cooperation realize mould seat automatic centering, positioning accurate and do not need artificial calibration, single power source cooperates pressure relief valve, let hydraulic oil first complete mould fixing then drive bender, process link seamlessly, detachable mould adapts to multiple vehicle types, pressure stabilizing system guarantees that bending force is uniform, positioning difference, collaborative weakness and other problems are solved, precision and efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the field of bending equipment technology, and in particular relates to a bending device for producing automotive parts frames. Background Technology

[0002] With the rapid development of the modern automotive industry, the production efficiency and manufacturing precision of automotive parts have become important indicators for measuring the competitiveness of automotive manufacturing enterprises. In the production process of automotive parts skeletons, bending is a key link to ensure the shape and dimensional accuracy of parts. However, traditional bending equipment often relies on manual operation and simple mechanical structures, which not only leads to low production efficiency but also makes it difficult to guarantee the consistency of bending precision. In addition, traditional equipment is prone to wear after long-term use, resulting in bending angle deviations, which in turn affect product quality.

[0003] The main issues requiring improvement in the existing technology include: (1) Traditional devices often fix the mold base with bolts. Manual calibration and positioning takes a long time. The mold base is prone to displacement due to force, resulting in high positioning error, which causes deviation in the bending angle of the sheet metal. Subsequent correction is required, which reduces production efficiency. (2) The mold fixing and the sheet bending are mostly controlled by two power sources respectively. There is a time difference between the two processes. The sheet is easily displaced when bending force is applied before the mold is fully fixed, or the mold is damaged due to a sudden increase in bending pressure, resulting in a low product qualification rate. Utility Model Content

[0004] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides a bending device for producing automotive parts frames. A hydraulic pump drives a piston rod, causing a fixed cone to engage with the conical surface of a conical groove, achieving automatic centering of the mold seat. Positioning is precise and requires no manual calibration. A single power source, coupled with a pressure relief valve, allows hydraulic oil to first fix the mold before driving the pressure block mold for bending. The process is seamlessly integrated. The detachable mold is adaptable to multiple vehicle models. A pressure stabilizing system ensures uniform bending force, solving problems such as poor positioning and weak coordination, thus improving accuracy and efficiency.

[0005] The technical solution adopted by this utility model is as follows: A bending device for producing automotive parts skeletons includes a base and a box fixedly installed on the upper wall of the base. A main body box is fixedly installed on the bottom wall of the inner body box. A mold seat is detachably installed on the bottom wall of the inner body box. A hydraulic cylinder is symmetrically fixed on the outer wall of the outer body box. A piston rod is movably and closely attached inside the hydraulic cylinder. The piston rod corresponds to the mold seat. The hydraulic cylinder and the piston rod work together. The extension and retraction of the piston rod is achieved by the inflow and outflow of hydraulic oil. During the operation of the equipment, the hydraulic cylinder receives hydraulic oil from the oil tank and the hydraulic pump, which pushes the piston rod to move, so that the fixed cone is inserted into the conical groove of the mold seat, thereby achieving automatic centering and fixing of the mold seat and providing a stable foundation for subsequent sheet metal bending operations. A hydraulic cylinder two is fixedly installed on the top wall inside the main body box. A piston rod two is movably and closely fitted inside the hydraulic cylinder two. The lower end of the piston rod two corresponds to the mold seat. The hydraulic cylinder two is connected to the hydraulic cylinder one through a pipe. The hydraulic cylinder two and the piston rod two work together. The extension and retraction of the piston rod two is achieved by the inflow and outflow of hydraulic oil. After the mold seat is positioned, the hydraulic cylinder two receives hydraulic oil from the hydraulic cylinder one. Under the action of hydraulic pressure, it pushes the piston rod two and the pressure block mold to move down, extruding and bending the sheet metal placed on the mold seat. It is the key actuator for realizing the bending action of the sheet metal. An oil tank is fixedly installed on the upper wall of the base, and the oil tank is connected to a hydraulic cylinder via a pipe.

[0006] As a preferred technical solution of this invention, a hydraulic pump is fixedly installed on the outer top wall of the oil tank. The suction end of the hydraulic pump is connected to a suction pipe that extends into the bottom of the oil tank. A connecting cylinder is fixedly installed on the outer bottom wall of the tank, and the connecting cylinder is connected to the outlet end of the hydraulic pump. The hydraulic pump, as the power source of the hydraulic system, is installed on the outer top wall of the oil tank. It draws hydraulic oil from the bottom of the oil tank through the suction pipe and delivers it to the connecting cylinder. Then, through transmission pipe one and transmission pipe two, the hydraulic oil is delivered to hydraulic cylinder one and hydraulic cylinder two respectively, driving the extension and retraction of piston rod one and piston rod two, thereby realizing the functions of mold seat positioning and sheet metal bending.

[0007] As a preferred technical solution of this invention, the lower end of the piston rod is provided with a pressure block mold, and the pressure block mold corresponds to the mold base.

[0008] As a preferred technical solution of this invention, the mold seat sidewall is symmetrically provided with tapered grooves, the piston rod is horizontally slidably disposed inside the sidewall of the main body box, and a fixed cone is fixedly provided at the end of the piston rod away from the hydraulic cylinder, the fixed cone corresponding to the tapered groove.

[0009] As a preferred technical solution of this invention, a transmission pipe is fixedly connected to hydraulic cylinder 1 through hydraulic cylinder 2, and a transmission pipe is fixedly connected to hydraulic cylinder 1 through connecting cylinder 2. A pressure relief valve is fixedly installed on the top wall of the main body box. The transmission pipe 1 is connected to hydraulic cylinder 2 through the pressure relief valve. The pressure relief valve is an important safety protection device in the hydraulic system. When the hydraulic pressure in hydraulic cylinder 1 and transmission pipe 1 gradually increases and exceeds the threshold set by the pressure relief valve, the pressure relief valve will automatically open to release excess hydraulic oil, thereby controlling the flow direction of hydraulic oil. After the hydraulic oil completes the positioning of the mold seat, it will automatically switch to hydraulic cylinder 2 to drive the pressing block mold to perform bending operation, thus achieving seamless connection of processes.

[0010] As a preferred technical solution of this invention, the outer wall of the main body box is symmetrically fixed with mounting brackets, and the hydraulic cylinder is fixedly disposed between the inner wall of the mounting bracket and the outer wall of the main body box.

[0011] The beneficial effects of this utility model after adopting the above structure are as follows: (1) The hydraulic pump drives the hydraulic oil to push the piston rod to move, so that the fixed cone and the conical groove of the mold seat form a conical surface fit. The self-centering property of the conical surface is used to realize the automatic centering of the mold seat. At the same time, the hydraulic pressure ensures that the fixed cone and the conical groove fit tightly. The positioning error of the mold seat is small, the positioning time is shortened, the bending angle consistency in mass production is improved, and no manual secondary calibration is required. This solves the problems of low mold positioning accuracy and cumbersome manual calibration in the existing technology, ensures the stability of the bending reference of the sheet metal, and improves the accuracy of mass production.

[0012] (2) Using a single hydraulic pump as the power source, hydraulic oil is supplied to hydraulic cylinder one first to fix the mold during the mold positioning stage; when the pressure reaches the threshold of the pressure relief valve, the hydraulic oil is automatically switched to hydraulic cylinder two to drive the pressure block mold to perform bending action, realizing the orderly connection of "positioning first and bending later", the positioning and bending processes are seamlessly connected, the processing time of a single process is shortened, the product qualification rate is improved, overcoming the defects of poor coordination of dual power sources and delayed process connection in the existing technology, reducing the loss of sheet metal and mold damage during the bending process, and improving production efficiency.

[0013] (3) The mold base and the pressure block mold adopt a detachable design, which can be quickly replaced to adapt to different vehicle frames; the hydraulic system stabilizes the pressure through the pressure relief valve to ensure that the pressure block mold applies uniform bending force to the plate, avoids local stress concentration, shortens the mold replacement time, and can adapt to different bending angle requirements. It solves the problem of poor mold adaptability and uneven bending force caused by the existing technology, reduces the equipment investment cost of multi-vehicle production, and ensures the mechanical properties of the bent parts. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the overall structure of a bending device for producing automotive parts skeletons according to the present invention. Figure 2 This is a cross-sectional view of the overall structure of a bending device for producing automotive parts skeletons proposed in this utility model. Figure 3 This is a cross-sectional view of the internal structure of the main box proposed in this utility model; Figure 4 This is a schematic diagram of the connection relationship of the connecting cylinder proposed in this utility model.

[0016] In the attached diagram: 1. Base; 2. Box body; 3. Main body box; 4. Oil tank; 5. Hydraulic cylinder one; 6. Hydraulic cylinder two; 7. Pressing block mold; 8. Mold seat; 9. Piston rod two; 10. Piston rod one; 11. Fixed cone; 12. Conical groove; 13. Connecting cylinder; 14. Hydraulic pump; 15. Suction pipe; 16. Transmission pipe one; 17. Transmission pipe two; 18. Mounting bracket; 19. Pressure relief valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-4As shown, a bending device for producing automotive component frames includes a base 1 and a box 2 fixedly mounted on the upper wall of the base 1. A main body box 3 is fixedly mounted on the bottom inner wall of the box 2. A mold seat 8 is detachably mounted on the bottom inner wall of the main body box 3. A hydraulic cylinder 5 is symmetrically fixed on the outer outer wall of the main body box 3. A piston rod 10 is movably and closely fitted inside the hydraulic cylinder 5, and the piston rod 10 corresponds to the mold seat 8. A second hydraulic cylinder 6 is fixedly mounted on the top inner wall of the main body box 3. A second piston rod 9 is movably and closely fitted inside the hydraulic cylinder 6, and the lower end of the second piston rod 9 corresponds to the mold seat 8. The second hydraulic cylinder 6 is pipe-connected to the first hydraulic cylinder 5. An oil tank 4 is fixedly mounted on the upper wall of the base 1. The oil tank 4 is pipe-connected to the first hydraulic cylinder 5. A pressing mold 7 is detachably mounted on the lower end of the second piston rod 9, and the pressing mold 7 corresponds to the mold seat 8. A mounting frame 18 is symmetrically fixed on the outer outer wall of the main body box 3. The first hydraulic cylinder 5 is fixedly mounted between the inner wall of the mounting frame 18 and the outer wall of the main body box 3.

[0019] A hydraulic pump 14 is fixedly installed on the top wall of the oil tank 4. The suction end of the hydraulic pump 14 is connected to a suction pipe 15, which extends into the bottom of the oil tank 4. A connecting cylinder 13 is fixedly installed on the bottom wall of the tank body 2. The connecting cylinder 13 is connected to the outlet end of the hydraulic pump 14. A conical groove 12 is symmetrically opened on the side wall of the mold seat 8. The piston rod 10 is horizontally slidably installed in the side wall of the main body box 3. A fixed cone 11 is fixedly installed at the end of the piston rod 10 away from the hydraulic cylinder 5. The fixed cone 11 corresponds to the conical groove 12. A transmission pipe 16 is connected to the hydraulic cylinder 5 and is fixedly installed between the hydraulic cylinder 6 and the hydraulic cylinder 5. A transmission pipe 17 is connected to the connecting cylinder 13 and is fixedly installed between the hydraulic cylinder 5 and the connecting cylinder 13. A pressure relief valve 19 is fixedly installed on the top wall of the main body box 3. The transmission pipe 16 is connected to the hydraulic cylinder 6 through the pressure relief valve 19.

[0020] In practical use, the mold base 8 should first be placed inside the main body box 3. Then, the plate to be bent should be placed above the mold base 8. Next, the hydraulic pump 14 should be started. At this time, the hydraulic oil in the oil tank 4 will be sucked in through the suction pipe 15 and flow into the connecting cylinder 13. Then, it will enter the hydraulic cylinder 5 through the transmission pipe 17. This process will push the piston rod 10 to move, so that the fixing cone 11 at its end can be accurately inserted into the conical groove 12 on the side wall of the mold base 8, so as to achieve precise centering and clamping of the mold base 8. After the fixed cone 11 is inserted into the conical groove 12, the piston rod 10 can no longer move. At this time, the hydraulic oil pressure in the hydraulic cylinder 5 and the transmission pipe 16 will gradually rise. When this pressure exceeds the threshold set by the pressure relief valve 19, the hydraulic oil will break through the pressure relief valve 19 and flow into the hydraulic cylinder 6, which will further drive the piston rod 9 and the pressing mold 7 to move downward, applying uniform pressure to the plate. Based on the angle between the mold seat 8 and the pressing mold 7, the plate is accurately bent.

[0021] If any person skilled in the art, inspired by this invention, designs a similar structure or embodiment without departing from the spirit of this invention, such design should fall within the protection scope of this invention.

Claims

1. A bending device for producing automotive component frames, comprising a base (1) and a housing (2) fixedly disposed on the upper wall of the base (1), characterized in that: The inner bottom wall of the box (2) is fixedly provided with a main body box (3), the inner bottom wall of the main body box (3) is detachably provided with a mold seat (8), the outer side wall of the main body box (3) is symmetrically fixedly provided with a hydraulic cylinder (5), the hydraulic cylinder (5) is movably and closely provided with a piston rod (10), the piston rod (10) is corresponding to the mold seat (8); The main body box (3) is fixedly provided with a hydraulic cylinder two (6) on the top wall. A piston rod two (9) is movably and closely attached inside the hydraulic cylinder two (6). The lower end of the piston rod two (9) corresponds to the mold seat (8). The hydraulic cylinder two (6) is connected to the hydraulic cylinder one (5) by a pipe. An oil tank (4) is fixedly installed on the upper wall of the base (1), and the oil tank (4) is connected to the hydraulic cylinder (5) via a pipeline.

2. The bending device for producing automotive component frames according to claim 1, characterized in that: A hydraulic pump (14) is fixedly installed on the top wall of the oil tank (4). The suction end of the hydraulic pump (14) is connected to a suction pipe (15). The suction pipe (15) extends into the bottom of the oil tank (4). A connecting cylinder (13) is fixedly installed on the bottom wall of the tank body (2). The connecting cylinder (13) is connected to the outlet end of the hydraulic pump (14).

3. The bending device for producing automotive component frames according to claim 2, characterized in that: The piston rod 2 (9) is detachably equipped with a pressing mold (7) at its lower end, and the pressing mold (7) corresponds to the mold base (8).

4. The bending device for producing automotive component frames according to claim 3, characterized in that: The mold base (8) has a tapered groove (12) symmetrically opened on the side wall. The piston rod (10) is horizontally slidably arranged in the side wall of the main body box (3). The end of the piston rod (10) away from the hydraulic cylinder (5) is fixedly provided with a fixed cone (11). The fixed cone (11) corresponds to the tapered groove (12).

5. A bending device for producing automotive component frames according to claim 4, characterized in that: The hydraulic cylinder 2 (6) is connected to the hydraulic cylinder 1 (5) by a transmission pipe 1 (16), the hydraulic cylinder 1 (5) is connected to the connecting cylinder (13) by a transmission pipe 2 (17), the top wall of the main body box (3) is fixedly provided with a pressure relief valve (19), and the transmission pipe 1 (16) is connected to the hydraulic cylinder 2 (6) through the pressure relief valve (19).

6. The bending device for producing automotive component frames according to claim 1, characterized in that: The outer wall of the main body box (3) is symmetrically fixed with mounting brackets (18), and the hydraulic cylinder (5) is fixed between the inner wall of the mounting bracket (18) and the outer wall of the main body box (3).

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