A clamping mechanism for elevator fitting production

Abstract

The utility model discloses a kind of clamping mechanisms for elevator fittings production, including bottom plate, the upper end one side of bottom plate is fixed with baffle, the upper end other side of bottom plate is fixed with guide rail, fixed frame is slidably connected on guide rail;The upper end one side of bottom plate is fixed with fixed block, hydraulic cylinder is fixedly sleeved on the fixed block, the piston rod end of hydraulic cylinder is connected with slider, the upper end of slider is fixed in the lower end of fixed frame, the lower end of slider is clamped on guide rail;Pneumatic lifting mechanism is installed on the fixed frame, the lower end of pneumatic lifting mechanism is connected with moving block, pneumatic limiting structure is installed on the both sides of moving block.The utility model solves the stability defect of traditional cylinder clamping, guarantees the stability and firmness of elevator fittings clamping, can be fully adapted to different sizes of plate simultaneously, degree of automation is high, and the stability and practicality of processing are strengthened.

Description

Technical Field

[0001] This utility model relates to the field of elevator parts clamping technology, and in particular to a clamping mechanism for elevator parts production. Background Technology

[0002] In the elevator component manufacturing industry, clamping mechanisms are key equipment in welding, assembly, and other processes, used to fix metal sheets (such as car wall panels or door panels). Traditional methods mainly rely on cylinder-driven clamping (such as single cylinders or simple pneumatic systems). Traditional cylinder clamping suffers from insufficient clamping force due to air source pressure fluctuations (usually only 0.5-0.7 MPa) and is easily affected by external interference (such as equipment vibration or operational shocks), causing micro-displacement or loosening of the sheet metal during welding, directly leading to welding defects. To address these issues, we propose a clamping mechanism for elevator component manufacturing. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a clamping mechanism for elevator parts production.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A clamping mechanism for elevator parts production includes a base plate, a baffle fixed to one side of the upper end of the base plate, a guide rail fixed to the other side of the upper end of the base plate, and a fixed frame slidably connected to the guide rail.

[0006] A fixing block is fixed to one side of the upper end of the base plate, and a hydraulic cylinder is fixedly mounted on the fixing block. A slider is connected to the end of the piston rod of the hydraulic cylinder. The upper end of the slider is fixed to the lower end of the fixing frame, and the lower end of the slider is engaged with the guide rail.

[0007] A pneumatic lifting mechanism is installed on the fixed frame, and a moving block is connected to the lower end of the pneumatic lifting mechanism. Pneumatic limiting structures are installed on both sides of the moving block.

[0008] Four vacuum suction cups are installed on the upper end of the base plate.

[0009] Preferably, the pneumatic lifting mechanism includes a second cylinder fixed to one side of the upper end of the fixed frame, and the piston rod of the second cylinder passes through the side wall of the fixed frame and is connected to the upper middle part of the moving block.

[0010] Preferably, the pneumatic limiting structure includes a first cylinder fixed on both sides of the movable block, the piston rod of the first cylinder passing through the side wall of the movable block and extending to one side of the movable block, the end of the piston rod of the first cylinder being fixed with a mounting plate, and a clamping plate being fixed on one side of the mounting plate.

[0011] Preferably, a support block is fixed on both sides of the upper end of the base plate, and the vacuum suction cup is located between the two support blocks.

[0012] Preferably, a limiting plate is fixed to one side of the upper end of the base plate, and one side of the base plate is fixed to one side of the limiting plate.

[0013] Preferably, a mounting base is fixed to one side of the upper end of the base plate, and one end of the hydraulic cylinder is fixed to the mounting base.

[0014] Preferably, pads are fixed at the four lower corners of the base plate, and a positioning plate is fixed on one side of the upper end of the base plate.

[0015] Preferably, the baffle is covered with a rubber layer around its perimeter.

[0016] This utility model has the following advantages:

[0017] 1. By combining hydraulic drive, pneumatic lifting and vacuum adsorption, the problem of unstable clamping in traditional cylinder clamping is overcome;

[0018] 2. The linear guidance of the guide rail and slider, combined with pneumatic lifting, can adapt to different sizes of sheet metal;

[0019] In summary, this invention solves the stability defects of traditional cylinder clamping, ensuring the stability and firmness of elevator parts clamping. At the same time, it can fully adapt to plates of different sizes, has a high degree of automation, and enhances the stability and practicality of processing. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 A structural diagram showing the pneumatic lifting mechanism of this utility model;

[0022] Figure 3 A structural diagram showing the pneumatic limiting structure of this utility model;

[0023] Figure 4 for Figure 1 Enlarged view of the structure at point A.

[0024] In the diagram: 101 base plate, 102 pad block, 103 limit plate, 104 baffle, 105 positioning plate, 201 fixing block, 202 hydraulic cylinder, 203 mounting base, 301 first cylinder, 302 moving block, 303 clamping plate, 304 mounting plate, 401 fixing frame, 402 second cylinder, 403 guide rail, 404 slider, 501 bearing block, 502 vacuum suction cup. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1-4 A clamping mechanism for elevator parts production includes a base plate 101, a baffle 104 fixed on one side of the upper end of the base plate 101, a guide rail 403 fixed on the other side of the upper end of the base plate 101, and a fixed frame 401 slidably connected on the guide rail 403.

[0027] A fixing block 201 is fixed on one side of the upper end of the base plate 101. A hydraulic cylinder 202 is fixedly mounted on the fixing block 201. A slider 404 is connected to the end of the piston rod of the hydraulic cylinder 202. The upper end of the slider 404 is fixed to the lower end of the fixing frame 401. The lower end of the slider 404 is engaged with the guide rail 403. The pressure of the hydraulic cylinder 202 is 15-25 MPa. The piston rod of the hydraulic cylinder 202 extends out from the fixing block 201 and pushes the slider 404.

[0028] A pneumatic lifting mechanism is installed on the fixed frame 401. The lower end of the pneumatic lifting mechanism is connected to a moving block 302. Pneumatic limit structures are installed on both sides of the moving block 302.

[0029] Four vacuum suction cups 502 are installed on the upper end of the base plate 101. The vacuum suction cups 502 are located between two bearing blocks 501 and directly contact the plate. The negative pressure range is (-80 kPa to -100 kPa).

[0030] The pneumatic lifting mechanism includes a second cylinder 402 fixed to one side of the upper end of the fixed frame 401. The piston rod of the second cylinder 402 passes through the side wall of the fixed frame 401 and is connected to the middle of the upper end of the moving block 302. The piston rod of the second cylinder 402 moves downward, pushing the moving block 302 to descend vertically to one side of the plate.

[0031] The pneumatic limiting structure includes a first cylinder 301 fixed on both sides of the moving block 302. The piston rod of the first cylinder 301 extends and drives the mounting plate 304 and the clamping plate 303 to move towards the edge of the plate. Together with the baffle 104, it forms a three-point fixation, which can effectively constrain the plate's degree of freedom of movement and rotation in the plane.

[0032] The piston rod of the first cylinder 301 passes through the side wall of the moving block 302 and extends to one side of the moving block 302. The end of the piston rod of the first cylinder 301 is fixed with a mounting plate 304. A clamping plate 303 is fixed on one side of the mounting plate 304. A pressure sensor is provided on one side of the clamping plate 303 and connected to the first cylinder 301 and the PLC system to realize pressure control and avoid overpressure.

[0033] The upper sides of the base plate 101 are fixed with bearing blocks 501, and the vacuum suction cup 502 is located between the two bearing blocks 501. The bearing blocks 501 provide discrete support points with consistent height to ensure that the plate remains flat when initially placed and to prevent initial bending due to its own weight.

[0034] A limiting plate 103 is fixed to one side of the upper end of the base plate 101, and one side of the base plate 101 is fixed to one side of the limiting plate 103. A mounting base 203 is fixed to one side of the upper end of the base plate 101, and one end of the hydraulic cylinder 202 is fixed to the mounting base 203.

[0035] The bottom four corners of the base plate 101 are fixed with pads 102, and the top side of the base plate 101 is fixed with a positioning plate 105. When the plate is placed, one end of the plate abuts against the positioning plate 105 to achieve precise and quick placement.

[0036] The baffle 104 is covered with a rubber layer around its perimeter. The rubber layer protects the finished surface of the sheet metal from being scratched by the metal baffle, increases static friction, and enhances the initial anti-slip effect.

[0037] The entire clamping process is controlled by a programmable logic controller (PLC), and sensor feedback forms a closed-loop control. The welding process is only allowed to begin after each action is in place and the clamping state is reliable, thus ensuring the quality consistency of mass production and reducing the scrap rate.

[0038] In this utility model, during welding,

[0039] 1. Initial positioning stage:

[0040] The operator places the sheet material to be processed on the two support blocks 501 on the upper end of the base plate 101. The support blocks 501 serve as a support platform to ensure that the initial position of the sheet material is flat. One end of the sheet material is in close contact with one side of the baffle 104. The baffle 104 serves as a fixed reference to prevent the sheet material from slipping during subsequent operations. The top of the sheet material is in contact with one side of the positioning plate 105 to achieve precise and rapid placement.

[0041] 2. Hydraulic drive adjustment stage:

[0042] The hydraulic system is activated via the control panel: the piston rod of the hydraulic cylinder 202 extends from the fixed block 201, and the piston rod pushes the slider 404, causing the slider 404 to slide along the guide rail 403. Since the upper end of the slider 404 is fixed to the lower end of the fixed frame 401, the fixed frame 401 moves horizontally to the preset position at the other end of the plate, such as 10-20mm from the edge of the plate. The hydraulic cylinder 202 provides a high pressure of 15-25 MPa, with fast response speed and the ability to withstand high loads, ensuring that the movement of the fixed frame 401 is stable and without vibration.

[0043] 3. Pneumatic clamping execution stage:

[0044] After the fixed frame 401 is in place, the pneumatic lifting mechanism is activated: the piston rod of the second cylinder 402 moves downward, pushing the moving block 302 vertically down to above the surface of the plate. Then, the pneumatic limiting structure works: the piston rod of the first cylinder 301 extends from both sides of the moving block 302, driving the mounting plate 304 and the clamping plate 303 to move towards the edge of the plate. The clamping plate 303 is made of wear-resistant material and firmly abuts against the other end of the plate, forming a "three-point fixation" (one end of the baffle 104 plus the other end of the two clamping plates 303). The whole process is precisely controlled by the pneumatic system (pressure 0.6-0.8 MPa), and the clamping force is adjustable (50-200N) to avoid overpressure damage to the surface of the plate.

[0045] 4. Vacuum-assisted fixation stage:

[0046] As the clamping plate 303 is in place, the four vacuum suction cups 502 installed on the base plate 101 are activated. They use negative pressure (-80 kPa to -100 kPa) to adsorb the lower surface of the plate. The vacuum suction cups 502 are located between the two bearing blocks 501 and directly contact the plate to eliminate micro-vibrations (such as arc impact) during the welding process. Finally, the system confirms the clamping status through sensors and enters the welding process.

[0047] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A clamping mechanism for elevator parts manufacturing, comprising a base plate (101), characterized in that, A baffle (104) is fixed on one side of the upper end of the base plate (101), and a guide rail (403) is fixed on the other side of the upper end of the base plate (101). A fixing frame (401) is slidably connected on the guide rail (403). A fixing block (201) is fixed on one side of the upper end of the base plate (101). A hydraulic cylinder (202) is fixedly mounted on the fixing block (201). A slider (404) is connected to the end of the piston rod of the hydraulic cylinder (202). The upper end of the slider (404) is fixed to the lower end of the fixing frame (401), and the lower end of the slider (404) is engaged with the guide rail (403). A pneumatic lifting mechanism is installed on the fixed frame (401), and a moving block (302) is connected to the lower end of the pneumatic lifting mechanism. Pneumatic limiting structures are installed on both sides of the moving block (302). Four vacuum suction cups (502) are installed on the upper end of the base plate (101).

2. The clamping mechanism for elevator parts production according to claim 1, characterized in that: The pneumatic lifting mechanism includes a second cylinder (402) fixed to one side of the upper end of the fixed frame (401). The piston rod of the second cylinder (402) passes through the side wall of the fixed frame (401) and is connected to the upper middle part of the moving block (302).

3. A clamping mechanism for elevator component manufacturing according to claim 1 or 2, characterized in that: The pneumatic limiting structure includes a first cylinder (301) fixed on both sides of the movable block (302). The piston rod of the first cylinder (301) passes through the side wall of the movable block (302) and extends to one side of the movable block (302). An mounting plate (304) is fixed to the end of the piston rod of the first cylinder (301). A clamping plate (303) is fixed to one side of the mounting plate (304).

4. The clamping mechanism for elevator parts production according to claim 1, characterized in that: The upper sides of the base plate (101) are fixed with bearing blocks (501), and the vacuum suction cup (502) is located between the two bearing blocks (501).

5. The clamping mechanism for elevator parts production according to claim 1, characterized in that: A limiting plate (103) is fixed to one side of the upper end of the base plate (101), and one side of the base plate (101) is fixed to one side of the limiting plate (103).

6. The clamping mechanism for elevator parts production according to claim 1, characterized in that: A mounting base (203) is fixed on one side of the upper end of the base plate (101), and one end of the hydraulic cylinder (202) is fixed on the mounting base (203).

7. The clamping mechanism for elevator parts production according to claim 1, characterized in that: The bottom of the base plate (101) is fixed with pads (102) at the four corners of the bottom, and a positioning plate (105) is fixed on one side of the top of the base plate (101).

8. The clamping mechanism for elevator parts production according to claim 1, characterized in that: The baffle (104) is covered with a rubber layer around its perimeter.

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