Pneumatic clamping jaw for engine cylinder block

Abstract

The utility model belongs to the technical field of clamping jaws, and discloses a pneumatic clamping jaw for an engine cylinder body, which comprises the engine cylinder body, a piston hole A, a piston hole B, a piston hole C and a piston hole D are arranged on the engine cylinder body, a clamping mechanism is arranged above the engine cylinder body, and the clamping mechanism comprises a three-jaw cylinder and a two-jaw cylinder which are arranged in parallel. A first finger assembly is mounted at the bottom of the three-jaw cylinder, a second finger assembly is mounted at the bottom of the two-jaw cylinder, and the lower end of the first finger assembly extends into the piston hole C and drives the first finger assembly to expand outwards through the three-jaw cylinder to be tightly connected with the inner wall of the piston hole C; the lower end of the second finger assembly extends into the piston hole A and is driven by the two-claw cylinder to expand outwards to be tightly connected with the inner wall of the piston hole A; according to the engine cylinder clamping mechanism, the principle that two pins are arranged on one face is adopted, the engine cylinder is stably clamped by the clamping mechanism, meanwhile, the structure is simple, the production cost is saved to a great extent, and popularization is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of gripper technology, specifically relating to a pneumatic gripper for engine cylinder blocks. Background Technology

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. An engine is a precision and complex power unit, whose main components include cylinder block, cylinder head, crankshaft, piston, connecting rod, valve, camshaft, intake system, exhaust system, fuel supply system, lubrication system, cooling system, and ignition system.

[0003] During the processing of engine cylinder blocks, it is necessary to grip the engine cylinder block. For example, the utility model patent "An Engine Cylinder Block Gripper" application number 2024205288033 discloses an engine cylinder block gripper, which includes a mechanical arm fixedly installed on the top of the moving end of a linear module. The mechanical arm includes a double-headed cylinder, and each of the two moving ends of the double-headed cylinder is fixedly equipped with a gripper. The bottom opposite sides of the two grippers are fixedly connected with clamping plates by bolts. The two grippers grip the engine cylinder block from both sides. In the actual gripping process, the grippers need to be in the correct position to perform the gripping operation. Otherwise, it is easy for the grippers to be unable to grip the cylinder block stably, or to collide with the cylinder block, causing damage to the cylinder block, which is also not conducive to the processing of both sides of the engine cylinder block.

[0004] The utility model patent "An Engine Cylinder Block Gripper Device" application number 2023227565804 uses a gripping mechanism to grip the engine cylinder block by inserting the gripper into the piston hole of the cylinder block and engaging it with the outer edge of the bottom of the piston hole. Although it overcomes the defect of the existing technology where the gripper directly grips both sides of the engine cylinder block, the structure itself is relatively complex and the manufacturing cost is high, which is not conducive to its widespread adoption.

[0005] In summary, a pneumatic gripper for engine cylinder blocks is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a pneumatic gripper for engine cylinder blocks, which has a simple structure, is easy to use, has high gripping stability, and low manufacturing cost.

[0007] The technical solution adopted by this utility model is as follows: a pneumatic gripper for an engine cylinder block, including an engine cylinder block, which has four piston holes, namely piston hole A, piston hole B, piston hole C and piston hole D. A gripping mechanism is provided above the engine cylinder block. The top of the gripping mechanism is connected to the bottom surface of a connecting plate. A robot arm is connected to the top surface of the connecting plate. The gripping mechanism includes a three-jaw cylinder and a two-jaw cylinder arranged in parallel. A first finger assembly is installed at the bottom of the three-jaw cylinder. The first finger assembly includes three L-shaped fingers that are evenly distributed circumferentially. A second finger assembly is installed at the bottom of the two-jaw cylinder. The second finger assembly includes two L-shaped fingers that are symmetrically distributed. The lower end of the first finger assembly extends into piston hole C and is driven by the three-jaw cylinder to expand outward and tightly connect with the inner wall of piston hole C. The lower end of the second finger assembly extends into piston hole A and is driven by the two-jaw cylinder to expand outward and tightly connect with the inner wall of piston hole A.

[0008] The first finger assembly is fixedly installed at the bottom of the three-jaw cylinder by connecting bolts. Each of the three L-shaped fingers of the first finger assembly is provided with a pad a at the point where they are tightly connected to the inner wall of the piston hole C. The pad a has a bolt hole and a bolt is installed inside the bolt hole. The pad a is fixedly connected to the L-shaped finger by bolts.

[0009] The second finger assembly is fixedly installed at the bottom of the two-claw cylinder by connecting bolts. A pad b is provided at the point where the two L-shaped fingers of the second finger assembly are tightly connected to the inner wall of the piston hole A. The pad b has a bolt hole and a bolt is installed inside the bolt hole. The pad b is tightly connected to the L-shaped finger by the bolt.

[0010] The connecting plate has mounting holes, through which the three-jaw cylinder and the two-jaw cylinder are fixedly connected to the connecting plate. The connecting plate has a throttle valve hole, and the upper part of the three-jaw cylinder and the two-jaw cylinder are connected to the gas throttle valve through the throttle valve hole. The gas throttle valve is connected to the gas source. The connecting plate has a groove in the center.

[0011] The outer side of the L-shaped finger tip has a trapezoidal groove, and pad a or pad b is placed in the trapezoidal groove.

[0012] The clamping mechanism has two sets, which are respectively set on both sides of the bottom surface of the connecting plate. The two sets of clamping mechanisms are arranged in parallel, and the three-jaw cylinders and two-jaw cylinders of the two sets of clamping mechanisms are arranged diagonally.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention uses a robotic arm to move a gripping mechanism to a suitable position. The first and second finger assemblies extend into piston holes C and A, respectively. A three-jaw cylinder and a two-jaw cylinder respectively drive the first and second finger assemblies to open. The first and second finger assemblies are tightly fitted to the inner walls of piston holes C and A, respectively. Utilizing the principle of one side and two pins, the first finger assembly restricts the engine block in the X and Y directions, while the second finger assembly restricts the engine block in the Z direction, achieving stable gripping of the engine block by the gripping mechanism. At the same time, this invention has a simple structure, which greatly saves production costs and is conducive to promotion. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the three-dimensional flipping structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the engine cylinder block structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the clamping mechanism and engine cylinder block gripping of this utility model.

[0019] The markings in the diagram are: 1. Engine block; 11. Piston hole A; 12. Piston hole B; 13. Piston hole C; 14. Piston hole D; 2. Gripping mechanism; 21. Three-jaw cylinder; 211. First finger assembly; 212. Pad a; 22. Two-jaw cylinder; 221. Second finger assembly; 222. Pad b; 23. L-shaped finger; 24. Gas throttle valve; 3. Connecting plate. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-4As shown, a pneumatic gripper for an engine cylinder block includes an engine cylinder block 1. The engine cylinder block 1 has four piston holes: piston hole A11, piston hole B12, piston hole C13, and piston hole D14. A gripping mechanism 2 is located above the engine cylinder block 1. The gripping mechanism 2 includes a three-jaw cylinder 21 and a two-jaw cylinder 22 arranged in parallel. A first finger assembly 211 is mounted on the bottom of the three-jaw cylinder 21 by connecting bolts. The first finger assembly 211 includes three L-shaped fingers 23, which are evenly distributed circumferentially. Each of the three L-shaped fingers 23 of the piston 211 has a pad a212 at its tight connection point with the inner wall of the piston hole C13. The pad a212 has bolt holes with bolts inside, and the pad a212 is fixedly connected to the L-shaped fingers 23 by bolts. A second finger assembly 221 is installed at the bottom of the two-claw cylinder 22. The second finger assembly 221 is fixedly installed at the bottom of the two-claw cylinder 22 by connecting bolts. The second finger assembly 221 includes two L-shaped fingers 23, which are symmetrically distributed. At the tight connection point between the outer surface of each L-shaped finger 23 and the inner wall of the piston hole A11, a pad a212 is provided. A pad b222 has bolt holes, and bolts are installed inside the bolt holes. The pad b222 is tightly connected to the L-shaped finger 23 by the bolts. The outer side of the end of the L-shaped finger 23 has a trapezoidal groove, and the pad a212 or the pad b222 is placed in the trapezoidal groove. The lower end of the first finger assembly 211 extends into the piston hole C13 and is driven by the three-jaw cylinder 21 to expand outward and tightly connect with the inner wall of the piston hole C13. The lower end of the second finger assembly 221 extends into the piston hole A11 and is driven by the two-jaw cylinder 22 to expand outward and tightly connect with the inner wall of the piston hole A11. The clamping mechanism 2 has two sets, which are respectively set on both sides of the bottom surface of the connecting plate 3. The two sets of clamping mechanisms 2 are arranged in parallel, and the three-jaw cylinder 21 and two-jaw cylinder 22 of the two sets of clamping mechanisms 2 are arranged diagonally. The top of the clamping mechanism 2 is connected to the bottom surface of the connecting plate 3. The connecting plate 3 has mounting holes, and the three-jaw cylinder 21 and two-jaw cylinder 22 are fixedly connected to the connecting plate 3 through the mounting holes. The connecting plate 3 has a throttle valve hole, and the upper part of the three-jaw cylinder 21 and two-jaw cylinder 22 are connected to the gas throttle valve 24 through the throttle valve hole. The gas throttle valve 24 is connected to the gas source. The connecting plate 3 has a groove in the center, and the top surface of the connecting plate 3 is connected to the robot arm.

[0022] This type of engine cylinder block uses a pneumatic gripper. In use, the mechanical gripper drives the gripping mechanism 2 to move above the engine cylinder block 1, and then drives the first finger assembly 211 and the second finger assembly 221 to extend into the piston hole C13 and piston hole A11 respectively. The three-jaw cylinder 21 and the two-jaw cylinder 22 drive the first finger assembly 211 and the second finger assembly 221 to open. The pads a212 and b222 are tightly connected to the inner walls of the piston hole C13 and piston hole A11. The mechanical gripper drives the gripping mechanism 2 to grip the engine cylinder block 1. This utility model uses the principle of one side and two pins. The first finger assembly 211 restricts the engine cylinder block 1 in the X and Y directions, and the second finger assembly 221 restricts the engine cylinder block 1 in the Z direction, so as to realize the stable gripping of the engine cylinder block 1 by the gripping mechanism 2. At the same time, this utility model has a simple structure, which greatly saves production costs and is conducive to promotion.

Claims

1. A pneumatic gripper for an engine cylinder block, comprising an engine cylinder block, the engine cylinder block having four piston holes, namely piston hole A, piston hole B, piston hole C and piston hole D, and a gripping mechanism provided above the engine cylinder block, characterized in that: The top of the gripping mechanism is connected to the bottom of the connecting plate, and the top of the connecting plate is connected to the robotic arm. The gripping mechanism includes a three-jaw cylinder and a two-jaw cylinder arranged in parallel. A first finger assembly is installed at the bottom of the three-jaw cylinder. The first finger assembly includes three L-shaped fingers that are evenly distributed circumferentially. A second finger assembly is installed at the bottom of the two-jaw cylinder. The second finger assembly includes two L-shaped fingers that are symmetrically distributed. The lower end of the first finger assembly extends into the piston hole C and is driven by the three-jaw cylinder to expand outward and be tightly connected to the inner wall of the piston hole C. The lower end of the second finger assembly extends into the piston hole A and is driven by the two-jaw cylinder to expand outward and be tightly connected to the inner wall of the piston hole A.

2. The pneumatic gripper for engine cylinder block according to claim 1, characterized in that: The first finger assembly is fixedly installed at the bottom of the three-jaw cylinder by connecting bolts. Each of the three L-shaped fingers of the first finger assembly is provided with a pad a at the point where they are tightly connected to the inner wall of the piston hole C. The pad a has a bolt hole and a bolt is installed inside the bolt hole. The pad a is fixedly connected to the L-shaped finger by bolts.

3. The pneumatic gripper for engine cylinder block according to claim 1, characterized in that: The second finger assembly is fixedly installed at the bottom of the two-claw cylinder by connecting bolts. A pad b is provided at the point where the two L-shaped fingers of the second finger assembly are tightly connected to the inner wall of the piston hole A. The pad b has a bolt hole and a bolt is installed inside the bolt hole. The pad b is tightly connected to the L-shaped finger by the bolt.

4. The pneumatic gripper for engine cylinder block according to claim 1, characterized in that: The connecting plate has mounting holes, through which the three-jaw cylinder and the two-jaw cylinder are fixedly connected to the connecting plate. The connecting plate has a throttle valve hole, and the upper part of the three-jaw cylinder and the two-jaw cylinder are connected to the gas throttle valve through the throttle valve hole. The gas throttle valve is connected to the gas source. The connecting plate has a groove in the center.

5. The pneumatic gripper for engine cylinder block according to claim 1, characterized in that: The outer side of the L-shaped finger tip has a trapezoidal groove, and pad a or pad b is placed in the trapezoidal groove.

6. The pneumatic gripper for engine cylinder block according to claim 1, characterized in that: The clamping mechanism has two sets, which are respectively set on both sides of the bottom surface of the connecting plate. The two sets of clamping mechanisms are arranged in parallel, and the three-jaw cylinders and two-jaw cylinders of the two sets of clamping mechanisms are arranged diagonally.

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