Self-locking type die clamping device

Abstract

The utility model belongs to the technical field of die clamping devices, and particularly relates to a self-locking type die clamping device which comprises a moving mechanism and a die clamping mechanism, the moving mechanism comprises a mounting frame, a sliding rod is fixedly mounted in the mounting frame, a sliding block is connected to the surface of the sliding rod in a sliding mode, a fixing shell is fixedly mounted on one side of the mounting frame, and the die clamping mechanism is fixedly mounted on the fixing shell. A first hydraulic cylinder is mounted in the fixed shell; the bottom of the sliding block is fixedly connected with a mounting base on the die clamping mechanism, the mounting base is rotationally connected with a support, one end of the support is rotationally connected with a connecting base, and the mounting base is provided with a second hydraulic cylinder. Through cooperative work of the moving mechanism and the die clamping mechanism, accurate positioning and clamping of workpieces can be achieved, the machining requirements of workpieces of different shapes and sizes are met, the flexible rotating structure enables the die clamping device to adapt to complex and changeable working conditions, and universality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, and particularly relates to a self-locking clamping device. Background Art

[0002] In modern industrial production, clamping devices are widely used tools for fixing and clamping workpieces to ensure the smooth progress of operations such as machining and assembly. However, traditional clamping devices may have some limitations during use, such as insufficient clamping stability and inconvenient and inflexible operation.

[0003] With the continuous progress of technology and the increasing industrial demands, higher requirements are put forward for the performance of clamping devices. A clamping device capable of realizing a reliable self-locking function is needed to ensure that workpieces can be firmly clamped under various working conditions and avoid accidental loosening or displacement. At the same time, it is also expected that such a clamping device has good adjustability and adaptability to cope with workpieces of different shapes and sizes.

[0004] In this context, a new type of self-locking clamping device emerges as the times require. Through its unique structural design and advanced control technology, it effectively overcomes the deficiencies of traditional clamping devices. It can not only quickly and accurately realize the clamping action, but also achieve a stable self-locking function through the hydraulic system and related control components, greatly improving the safety and efficiency of production. This self-locking clamping device has important application value and broad market prospects in many fields such as mechanical manufacturing and mold processing. Summary of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a self-locking clamping device, which solves the problems put forward in the above background art.

[0007] (II) Technical Solutions

[0008] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0009] A self-locking clamping device includes a moving mechanism and a clamping mechanism. The moving mechanism includes a mounting frame. A sliding rod is fixedly installed inside the mounting frame. A slider is slidably connected to the surface of the sliding rod. A fixed shell is fixedly installed on one side of the mounting frame. A first hydraulic cylinder is installed inside the fixed shell.

[0010] The bottom of the slider is fixedly connected to the mounting seat on the mold clamping mechanism. A bracket is rotatably connected to the mounting seat. One end of the bracket is rotatably connected to a connecting seat. A second hydraulic cylinder is provided on the mounting seat. The bottom of the connecting seat is rotatably connected to a clamping plate. A third hydraulic cylinder is provided between the connecting seat and the clamping plate. Pressure sensors and oil pressure control valves are provided on the first hydraulic cylinder, the second hydraulic cylinder, and the third hydraulic cylinder.

[0011] Further, the telescopic end of the first hydraulic cylinder penetrates through the mounting frame and is fixedly connected to the slider.

[0012] Further, the fixed end of the second hydraulic cylinder rotates on the mounting seat, and the second hydraulic cylinder is rotatably connected to the connecting seat.

[0013] Further, the clamping plate is provided with hollow holes.

[0014] Further, the fixed end of the third hydraulic cylinder rotates on the connecting seat, and the output end of the third hydraulic cylinder rotates on the clamping plate.

[0015] Further, the pressure sensors and the oil pressure control valves are connected to an industrial PLC controller.

[0016] (III) Advantageous Effects

[0017] Compared with the prior art, the present utility model provides a self-locking mold clamp, which has the following advantageous effects:

[0018] In the present utility model, through the coordinated work of the moving mechanism and the mold clamping mechanism, accurate positioning and clamping of workpieces can be achieved, meeting the processing requirements of workpieces with different shapes and sizes. Its flexible rotating structure enables the mold clamp to adapt to complex and changeable working conditions, improving the versatility.

[0019] In the present utility model, the connection of the pressure sensors and the oil pressure control valves to the industrial PLC controller realizes automatic precise control. It can not only grasp the working state of the hydraulic system in real time but also adjust in a timely manner according to the actual situation to ensure the stability and reliability of the clamping force. At the same time, the self-locking function is also realized, ensuring the safety of the workpiece during the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present utility model;

[0021] Figure 2 It is a schematic side view structural diagram of the present utility model.

[0022] In the figure: 1, mounting bracket; 2, slide bar; 3, slider; 4, fixed housing; 5, first hydraulic cylinder; 6, mounting seat; 7, bracket; 8, second hydraulic cylinder; 9, connecting seat; 10, clamping plate; 11, hollow hole; 12, third hydraulic cylinder. Detailed implementation

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] Embodiment

[0025] As Figure 1-2 shown, a self-locking mold clamping device proposed in an embodiment of the present invention includes a moving mechanism and a mold clamping mechanism. The moving mechanism includes a mounting bracket 1. A slide bar 2 is fixedly installed inside the mounting bracket 1. A slider 3 is slidably connected to the surface of the slide bar 2. A fixed housing 4 is fixedly installed on one side of the mounting bracket 1. A first hydraulic cylinder 5 is installed inside the fixed housing 4;

[0026] The bottom of the slider 3 is fixedly connected to a mounting seat 6 on the mold clamping mechanism. A bracket 7 is rotatably connected to the mounting seat 6. One end of the bracket 7 is rotatably connected to a connecting seat 9. A second hydraulic cylinder 8 is provided on the mounting seat 6. The bottom of the connecting seat 9 is rotatably connected to a clamping plate 10. A third hydraulic cylinder 12 is provided between the connecting seat 9 and the clamping plate 10. Pressure sensors and oil pressure control valves are provided on the first hydraulic cylinder 5, the second hydraulic cylinder 8, and the third hydraulic cylinder 12;

[0027] Moving mechanism: The mounting bracket 1 provides an overall support structure. The slide bar 2 is fixed inside the mounting bracket 1. The slider 3 can slide along the slide bar 2 to achieve linear movement. The first hydraulic cylinder 5 inside the fixed housing 4 pushes the slider 3 through telescopic movement, thereby driving the mold clamping mechanism to move, and the position of the mold clamping device can be accurately controlled.

[0028] Mold clamping mechanism: The mounting seat 6 is connected to the slider 3. The bracket 7 is rotatably connected to the mounting seat 6, increasing flexibility. The connecting seat 9 is rotatably connected to the bracket 7. The second hydraulic cylinder 8 can drive the connecting seat 9 to rotate relative to the mounting seat 6. The clamping plate 10 is rotatably connected to the connecting seat 9. The third hydraulic cylinder 12 is used to control the angle of the clamping plate 10. Through this series of rotating structures, multi-angle clamping of the workpiece can be achieved and the needs of workpieces with different shapes can be adapted. The hollow holes 11 on the clamping plate 10 play a role in reducing weight.

[0029] Control section: Pressure sensors are equipped on the first hydraulic cylinder 5, the second hydraulic cylinder 8, and the third hydraulic cylinder 12 to monitor the oil pressure in real time. The oil pressure control valve is used to adjust the oil pressure. They are connected to the industrial PLC controller to achieve precise automatic control, so as to achieve precise actions and functions such as self-locking.

[0030] The following is the working principle of this self-locking mold clamping device:

[0031] First, the telescopic action of the first hydraulic cylinder 5 is used to push the slider 3 to move along the slide bar 2, thereby driving the entire mold clamping mechanism to reach the designated position.

[0032] When the mold clamping mechanism is in place, the second hydraulic cylinder 8 acts, causing the support 7 to rotate relative to the mounting base 6 to adjust the position and angle of the connecting seat 9. Then, the third hydraulic cylinder 12 acts to drive the clamping plate 10 to rotate relative to the connecting seat 9 to achieve the clamping action on the workpiece. During the clamping process, the pressure sensors monitor the oil pressure in each hydraulic cylinder in real time and feed the data back to the industrial PLC controller. By controlling the oil pressure control valve through the PLC controller, the oil pressure can be precisely adjusted to ensure that the clamping force is appropriate and stable.

[0033] When self-locking is required, the PLC controller precisely controls the oil pressure control valve according to the preset program and the data of the pressure sensors to keep the oil pressure in each hydraulic cylinder stable, thereby achieving reliable self-locking of the mold clamping device and preventing the workpiece from loosening accidentally during the working process. At the same time, this design can also achieve the best clamping effect by flexibly adjusting the actions of each hydraulic cylinder according to the shapes and sizes of different workpieces.

[0034] As Figure 1 shown, in some embodiments, the telescopic end of the first hydraulic cylinder 5 penetrates through the mounting frame 1 and is fixedly connected to the slider 3; when the first hydraulic cylinder 5 expands and contracts, its telescopic end passes through the mounting frame 1. Since the telescopic end is fixedly connected to the slider 3, the telescopic action of the first hydraulic cylinder 5 can directly drive the slider 3 to perform linear movement on the slide bar 2.

[0035] As Figure 2 shown, in some embodiments, the fixed end of the second hydraulic cylinder 8 rotates on the mounting base 6, and the second hydraulic cylinder 8 is rotationally connected to the connecting seat 9; when the second hydraulic cylinder 8 acts, since its fixed end can rotate on the mounting base 6 and is also rotationally connected to the connecting seat 9, the expansion and contraction of the second hydraulic cylinder 8 will drive the connecting seat 9 to rotate relative to the mounting base 6.

[0036] As Figure 2 shown, in some embodiments, the clamping plate 10 is provided with a hollow hole 11. The hollow hole 11 can reduce the weight of the clamping plate 10 to a certain extent, making the movement of the entire mold clamping mechanism lighter, more flexible, and reducing energy consumption.

[0037] As Figure 2 shown, in some embodiments, the fixed end of the third hydraulic cylinder 12 rotates on the connecting seat 9, and the output end of the third hydraulic cylinder 12 rotates on the clamping plate 10. When the third hydraulic cylinder 12 expands and contracts, since its fixed end can rotate on the connecting seat 9 and the output end can rotate on the clamping plate 10, this enables the third hydraulic cylinder 12 to drive the clamping plate 10 to rotate by a certain angle relative to the connecting seat 9.

[0038] In some embodiments, the pressure sensor and the oil pressure control valve are connected to the industrial PLC controller; the pressure sensor monitors the oil pressure data in each hydraulic cylinder in real time and transmits this data to the industrial PLC controller. After receiving the pressure data, the PLC controller analyzes and processes it. According to the preset program and logic, the PLC controller sends control instructions to the oil pressure control valve. The oil pressure control valve adjusts the pressure and flow rate of the oil in the hydraulic system according to these instructions, so as to achieve precise control of the telescopic actions of each hydraulic cylinder.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-locking mold clamping device, comprising a moving mechanism and a mold clamping mechanism, characterized in that: The moving mechanism includes a mounting frame (1). A sliding rod (2) is fixedly installed inside the mounting frame (1). A slider (3) is slidably connected to the surface of the sliding rod (2). A fixed housing (4) is fixedly installed on one side of the mounting frame (1), and a first hydraulic cylinder (5) is installed inside the fixed housing (4). The bottom of the slider (3) is fixedly connected to a mounting seat (6) on the mold clamping mechanism. A bracket (7) is rotatably connected to the mounting seat (6). One end of the bracket (7) is rotatably connected to a connecting seat (9). A second hydraulic cylinder (8) is provided on the mounting seat (6). The bottom of the connecting seat (9) is rotatably connected to a clamping plate (10). A third hydraulic cylinder (12) is provided between the connecting seat (9) and the clamping plate (10). Pressure sensors and oil pressure control valves are provided on the first hydraulic cylinder (5), the second hydraulic cylinder (8), and the third hydraulic cylinder (12).

2. The self-locking mold clamping device according to claim 1, wherein: The telescopic end of the first hydraulic cylinder (5) penetrates through the mounting frame (1) and is fixedly connected to the slider (3).

3. The self-locking mold clamping device according to claim 1, wherein: The fixed end of the second hydraulic cylinder (8) rotates on the mounting seat (6), and the second hydraulic cylinder (8) is rotatably connected to the connecting seat (9).

4. The self-locking mold clamping device according to claim 1, wherein: The clamping plate (10) is provided with a hollow hole (11).

5. The self-locking mold clamping device according to claim 1, wherein: The fixed end of the third hydraulic cylinder (12) rotates on the connecting seat (9), and the output end of the third hydraulic cylinder (12) rotates on the clamping plate (10).

6. The self-locking mold clamping device according to claim 1, characterized in that: The pressure sensors and the oil pressure control valves are connected to an industrial PLC controller.

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