Mechanical self-locking combined bottom plate cylinder
By designing a mechanical self-locking combined base plate cylinder, self-locking is achieved by using the friction between the inclined piston and the piston rod, the existing clamps have large volume, low accuracy and heavy self-weight problems, and improve the positioning accuracy and production efficiency of the clamps, prevent the workpiece from falling apart, and reduce costs.
Patent Information
- Application Number
- CN202422291689.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing clamps are large in size, difficult to guarantee accuracy, lack self-locking function, are too heavy in weight, and are easily interfered with welding joint position and workpiece pick-up and placement, resulting in low production efficiency and increased cost.
A mechanical self-locking combined base plate cylinder is designed, which uses the inclined piston to generate friction force to achieve self-locking of air, and combines the air hole to control the up and down movement of the piston, reduces the space occupied by fixtures, improves positioning accuracy, and realizes clamping and opening actions through hooks.
It realizes efficient and precise clamping of the fixture, prevents the workpiece from being disconnected during power and air disconnection, reduces the overall weight and space occupation, and improves the operating efficiency and safety of the production line.
Smart Images
Figure CN223057086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of clamping devices, in particular to a mechanically self-locking combined bottom plate cylinder. Background Art
[0002] The body welding line is a very important link in the automobile manufacturing process. Its main task is to assemble the stamped body parts into a complete body through the welding process. This process includes multiple steps such as welding, assembly, and handling. The development of the body welding line has experienced a process from manual operation to semi-automation and then to the current full automation. With the progress of technology, the degree of automation of the welding line is getting higher and higher, which not only improves the production efficiency but also reduces the labor intensity of workers. The clamping devices used in the current largest-volume automobile factory welding lines have the following disadvantages:
[0003] 1. When the existing clamping device is in use, its volume is relatively large, resulting in a relatively large overall spatial external dimension of the fixture and gripper equipped with the clamping device, occupying more area;
[0004] 2. Most clamping devices use ordinary piston-type linear cylinders to achieve clamping with external mechanisms, and it is difficult to guarantee the accuracy, resulting in deviations during subsequent grasping operations and affecting the subsequent processing operations of the production line;
[0005] 3. The existing clamping device is not provided with a self-locking function, and it is difficult to prevent the workpiece from detaching from the fixture or the gripper fixture from falling or deforming in the event of power failure and air supply interruption, resulting in an increase in the overall cost;
[0006] 4. Whether it is the self-weight of the clamping device or the installation accessories, they all increase the weight of the fixture and gripper. Its excessive self-weight will reduce its load capacity and subsequently affect the grasping operation;
[0007] 5. During the process of the size of the clamping device product itself and the layout of the clamping points, it is vulnerable to interference problems caused by the solder joint position, workpiece picking and placing, and fixture matching, resulting in fewer choices and higher installation requirements.
[0008] Therefore, it is very necessary to invent a mechanically self-locking combined bottom plate cylinder to solve the above problems. Summary of the Utility Model
[0009] The purpose of the present utility model is to provide a mechanically self-locking combined bottom plate cylinder to solve the problems raised in the above-mentioned background technology. When the existing clamp is in use, its volume is relatively large, resulting in a relatively large overall spatial dimension of the fixture and gripper equipped with the clamp, occupying a relatively large area; most clamps use ordinary piston-type linear cylinders and external mechanisms to achieve clamping, and it is difficult to guarantee the accuracy, resulting in deviations during subsequent grasping operations, affecting the subsequent processing operations of the production line; the existing clamp is not provided with a self-locking function, making it difficult to prevent the workpiece from detaching from the fixture or the gripper fixture from falling or deforming in the event of power failure or air supply interruption, resulting in an increase in the overall cost; whether it is the self-weight of the clamp or the installation accessories, they all increase the weight of the fixture and gripper. Its excessive self-weight will cause a discount in its load capacity, affecting subsequent grasping operations; during the sizing of the clamp product itself and the layout of the clamping points, it is vulnerable to interference problems caused by the position of the welding points, the picking and placing of workpieces, and the fixture matching, resulting in fewer choices and higher installation requirements.
[0010] To achieve the above purpose, the present utility model provides the following technical solution: a mechanically self-locking combined bottom plate cylinder, including a housing. A support block is fixedly connected to the top of the housing, and a pin is fixedly connected to the top of the support block. A dust cover plate is installed on the housing. The bottom of the housing is fixedly connected to a cylinder body through a self-locking cylinder body, and the self-locking cylinder body cover is fixedly connected, and the cover is fixedly connected to the cylinder body. A piston is installed at the bottom of the cylinder body, and a piston rod is fixedly connected to the upper end of the piston. The piston rod passes through a self-locking piston, and the self-locking piston is movably connected to the self-locking cylinder body. When the self-locking piston is in an inclined state, a relatively large frictional force is generated with the piston rod, thereby realizing the air-off self-locking of the clamp. The upper end of the piston rod is hinged to a hook. The self-locking cylinder body is communicated with an unlocking air hole. The cylinder body is communicated with a locking air hole and an opening air hole. By introducing air into different air holes, the piston is caused to move up and down, thereby causing the hook to move and perform operations. A self-locking upper cover is fixedly connected to the top of the self-locking cylinder body.
[0011] Preferably, spaces for the pin to move are provided inside the pin, the support block, and the housing, ensuring sufficient moving space for the hook while ensuring the hook can move.
[0012] Preferably, the hook is in the shape of a "7", and the upper end of the hook passes through the pin and extends to the outside of the pin, facilitating the up and down movement of the hook driven by the movement of the piston, thus facilitating the opening and tightening actions of the hook.
[0013] Preferably, the piston is movably connected to the movable cavity provided inside the cylinder block, and the piston divides the movable cavity inside the cylinder block into upper and lower chambers. The upper chamber is communicated with the locking air hole, and the lower chamber is communicated with the opening air hole. By introducing air through the locking air hole of the cylinder block, the piston moves downward, driving the piston rod and the hook to move downward at the same time, thus completing the clamping action. The locking air hole on the self-locking cylinder block is ventilated first, and then the opening air hole on the cylinder block is ventilated. At this time, the position of the self-locking piston becomes correct and no longer generates friction with the piston rod. At the same time, the piston drives the piston rod and the hook to move upward, thus completing the hook opening action.
[0014] Preferably, the unlocking air hole, the locking air hole and the opening air hole are distributed on the same vertical straight line, and the unlocking air hole, the locking air hole and the opening air hole are located on the center line of one side of the device body. There is a gap between the unlocking air hole, the locking air hole and the opening air hole to ensure that the movement of the piston drives the hook to move up and down when different air holes introduce air, thus facilitating the hook to complete the opening and clamping operations.
[0015] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:
[0016] 1. The overall volume is small, reducing the overall external dimension of the fixture and the gripper, ensuring the flexible operation of the fixture, and thus enabling more efficient production and processing;
[0017] 2. High precision, ensuring the clamping and positioning accuracy of the tooling for the workpiece, and greatly guaranteeing the accuracy of the welding process;
[0018] 3. It has a self-locking function. The self-locking piston is in an inclined state and generates a relatively large friction force with the piston rod, thus realizing air cut-off self-locking, effectively preventing the tooling from failing in case of power failure and air cut-off, and ensuring the safety performance during processing operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.
[0020] Figure 1 It is a schematic plan view of the internal structure of the present utility model;
[0021] Figure 2 It is a schematic plan view of the overall structure of the present utility model;
[0022] Figure 3 It is a three-dimensional view of the overall structure of the present utility model.
[0023] Explanation of the reference numerals:
[0024] 1. Pin; 2. Hook; 3. Support block; 4. Housing; 5. Dust-proof cover plate; 6. Piston rod; 7. Self-locking upper cover; 8. Self-locking cylinder block; 9. Self-locking piston; 10. Upper cover; 11. Cylinder block; 12. Piston; 13. Unlock air hole; 14. Locking air hole; 15. Opening air hole. Specific implementation mode
[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0026] The present invention provides a Figures 1-3 shown mechanical self-locking combined bottom plate cylinder, including a housing 4, a support block 3 is fixedly connected to the top of the housing 4, and a pin 1 is fixedly connected to the top of the support block 3. A dust-proof cover plate 5 is installed on the housing 4. The bottom of the housing 4 is fixedly connected to the cylinder block 11 through a self-locking cylinder block 8, and the self-locking cylinder block 8 is fixedly connected to the upper cover 10, and the upper cover 10 is fixedly connected to the cylinder block 11. A piston 12 is installed at the bottom of the cylinder block 11, and a piston rod 6 is fixedly connected to the upper end of the piston 12, and the piston rod 6 passes through the self-locking piston 9. The self-locking piston 9 is movably connected to the self-locking cylinder block 8. When the self-locking piston 9 is in an inclined state, a relatively large frictional force is generated with the piston rod 6, so as to realize the air cut-off self-locking of the clamp. The upper end of the piston rod 6 is hinged to the hook 2. The self-locking cylinder block 8 is communicated with the unlock air hole 13, and the cylinder block 11 is communicated with the locking air hole 14 and the opening air hole 15. Venting air into different air holes makes the piston 12 move up and down, thereby causing the hook 2 to move and perform operations. A self-locking upper cover 7 is fixedly connected to the top of the self-locking cylinder block 8.
[0027] Spaces for the pin 1 to move are provided inside the pin 1, the support block 3 and the housing 4 to ensure sufficient moving space for the hook 2 while ensuring the hook 2 can move.
[0028] The hook 2 is in a "7" shape, and the upper end of the hook 2 passes through the pin 1 and extends to the outside of the pin 1, which is convenient for the movement of the piston 12 to drive the hook 2 to move up and down, so as to facilitate the hook 2 to perform opening and tightening actions.
[0029] The piston 12 is movably connected to the movable cavity provided inside the cylinder block 11, and the piston 12 divides the movable cavity inside the cylinder block 11 into upper and lower chambers. The upper chamber is communicated with the locking air hole 14, and the lower chamber is communicated with the opening air hole 15. By introducing air through the locking air hole 14 of the cylinder block 11, the piston 12 moves downward, simultaneously driving the piston rod 6 and the hook 2 to move downward, thereby completing the clamping action. The locking air hole 14 on the self-locking cylinder block 8 is ventilated first, and then the opening air hole 15 on the cylinder block 11 is ventilated. At this time, the position of the self-locking piston 9 becomes correct and no longer generates friction with the piston rod 6. At the same time, the piston 12 drives the piston rod 6 and the hook 2 to move upward, thereby completing the opening action of the hook 2.
[0030] The unlocking air hole 13, the locking air hole 14, and the opening air hole 15 are distributed on the same vertical straight line, and the unlocking air hole 13, the locking air hole 14, and the opening air hole 15 are located on the midline of one side of the device main body. Moreover, there is an interval between the unlocking air hole 13, the locking air hole 14, and the opening air hole 15, ensuring that the movement of the piston 12 drives the hook 2 to move up and down when different air holes introduce air, thereby facilitating the hook 2 to complete the opening and clamping operations.
[0031] Working principle: When using the mechanical self-locking combined bottom plate cylinder, first, the reciprocating movement of the cylinder piston 12 drives the hook 2 to swing up and down to clamp the workpiece, that is, by introducing air through the locking air hole 14 of the cylinder block 11, the piston 12 moves downward, simultaneously driving the piston rod 6 and the hook 2 to move downward, thereby completing the clamping action. At this time, the self-locking piston 9 is in an inclined state and generates a relatively large friction force with the piston rod 6, thereby realizing air cut-off self-locking;
[0032] When it is necessary to open the hook 2, the locking air hole 14 on the self-locking cylinder block 8 needs to be ventilated first, and then the opening air hole 15 on the cylinder block 11 is ventilated. At this time, the position of the self-locking piston 9 becomes correct and no longer generates friction with the piston rod 6. At the same time, the piston 12 drives the piston rod 6 and the hook 2 to move upward, thereby completing the opening action of the hook 2;
[0033] A dust-proof cover plate 5 is installed on the housing 4, which can effectively prevent dust and sundries from entering the interior and extend the service life of the product.
[0034] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.
Claims
1. Mechanically self-locking combined bottom plate cylinder, including a housing (4), characterized in that, A support block (3) is fixedly connected to the top of the housing (4), and a pin (1) is fixedly connected to the top of the support block (3). A dust-proof cover plate (5) is installed on the housing (4). The bottom of the housing (4) is fixedly connected to a cylinder block (11) through a self-locking cylinder body (8). The upper cover (10) of the self-locking cylinder body (8) is fixedly connected, and the upper cover (10) is fixedly connected to the cylinder block (11). A piston (12) is installed at the bottom of the cylinder block (11). The upper end of the piston (12) is fixedly connected to a piston rod (6), and the piston rod (6) passes through a self-locking piston (9). The self-locking piston (9) is movably connected to the self-locking cylinder body (8). The upper end of the piston rod (6) is hinged to a hook (2). The self-locking cylinder body (8) is communicated with an unlocking air hole (13). The cylinder block (11) is communicated with a locking air hole (14) and an opening air hole (15). A self-locking upper cover (7) is fixedly connected to the top of the self-locking cylinder body (8).
2. The mechanical self-locking combined bottom plate cylinder according to claim 1, characterized in that, Spaces for the pin (1) to move are provided inside the pin (1), the support block (3), and the housing (4).
3. The mechanical self-locking combined bottom plate cylinder according to claim 1, characterized in that, The hook (2) is in a "7" shape, and the upper end of the hook (2) passes through the pin (1) and extends to the outside of the pin (1).
4. The mechanical self-locking combined bottom plate cylinder according to claim 1, wherein, The piston (12) is movably connected to a movable cavity provided inside the cylinder block (11). The piston (12) divides the movable cavity inside the cylinder block (11) into upper and lower chambers. The upper chamber is communicated with the locking air hole (14), and the lower chamber is communicated with the opening air hole (15).
5. The mechanical self-locking combined bottom plate cylinder according to claim 1, characterized in that, The unlocking air hole (13), the locking air hole (14), and the opening air hole (15) are distributed on the same vertical straight line. The unlocking air hole (13), the locking air hole (14), and the opening air hole (15) are located on the midline of one side of the device body. There are intervals between the unlocking air hole (13), the locking air hole (14), and the opening air hole (15).