A cushion cylinder

Abstract

The utility model discloses a buffer air cylinder, including cylinder, one side of cylinder is equipped with first cylinder cover, and is equipped with second cylinder cover on the other side of cylinder, and first cylinder cover with second cylinder cover all are connected with gas source through being equipped with connecting hole, still be equipped with piston and air cylinder stem in cylinder, one end of air cylinder stem is exposed in the outside of second cylinder cover after passing second cylinder cover, and the other side of air cylinder stem passes piston and is connected with the slide sleeve of being equipped with, the inside of first cylinder cover is equipped with guide rod still, and through the mutual cooperation of guide rod with slide sleeve to prevent air cylinder stem rotates along the central axis of cylinder when moving, above all, when external gas source promotes piston and drives air cylinder stem to remove, can prevent air cylinder stem and rotate because of the cooperation of guide rod and slide sleeve, and then can effectively solve the problem that clamp can not accurate reliablely snatch material because of air cylinder stem and rotate.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic components technology, specifically a buffer cylinder. Background Technology

[0002] On production lines, fixtures are used to grip materials for material handling. However, these fixtures typically use cylinders as their power source. In existing cylinder technology, the piston moves within the cylinder body, causing the cylinder rod to rotate. Once the cylinder rod rotates, it can easily make it difficult for the fixture to grip the material smoothly. For example, in the prior art with publication number CN109268341A, the piston movement easily causes the cylinder rod to rotate, resulting in insufficient accuracy in material gripping when used as a power source. Utility Model Content

[0003] The purpose of this invention is to provide a buffer cylinder to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a buffer cylinder, comprising a cylinder body, a first cylinder cover on one side of the cylinder body, and a second cylinder cover on the other side of the cylinder body, wherein both the first cylinder cover and the second cylinder cover are connected to an air source through connecting holes; a piston and a cylinder rod are also provided inside the cylinder body; one end of the cylinder rod passes through the second cylinder cover and is exposed outside the second cylinder cover, and the other end of the cylinder rod passes through the piston and is connected to a sliding sleeve; a guide rod is also provided inside the first cylinder cover, and the cylinder rod is prevented from rotating along the central axis of the cylinder body by the cooperation between the guide rod and the sliding sleeve.

[0005] As a preferred technical solution of this utility model: the end of the cylinder rod facing the guide rod is also provided with a slot, and one end of the guide rod passes through the sliding sleeve and enters the slot.

[0006] As a preferred technical solution of this utility model: the first cylinder head and the second cylinder head are also provided with throttle valve holes. The throttle valve holes are connected to the interior of the cylinder body through a through hole, and the air source is prevented from being discharged outward through the throttle valve holes through the throttle valve core.

[0007] As a preferred technical solution of this utility model: the lower end of the throttling valve core is also provided with a tapered column.

[0008] As a preferred technical solution of this utility model: the cylinder rod is also provided with a sealing plug, and the inside of the first cylinder head and the second cylinder head are both provided with sealing rings.

[0009] The beneficial effects of this utility model by adopting the above technical solution are as follows: when an external air source causes the piston to move the cylinder rod, the cylinder rod can be prevented from rotating due to the cooperation between the guide rod and the sliding sleeve, thereby effectively solving the problem that the clamp cannot accurately and reliably grasp materials due to the rotation of the cylinder rod. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the cross-sectional structure of the cylinder rod after retraction.

[0011] Figure 2 This is a schematic cross-sectional view of the cylinder rod after it has been extended according to this utility model.

[0012] Figure 3 This is an exploded structural diagram of the first cylinder head of this utility model;

[0013] Figure 4 This is a schematic cross-sectional view of the first cylinder head of this utility model after disassembly.

[0014] In the diagram: 1. Cylinder block; 2. First cylinder head; 3. Piston; 4. Second cylinder head; 5. Cylinder rod; 6. Slot; 7. Sliding sleeve; 8. Guide rod; 9. Sealing ring; 10. Sealing plug; 11. Connecting hole; 12. Through hole; 13. Throttle valve hole; 14. Throttle valve core; 15. Conical column. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0016] Please see Figure 1-3This utility model provides an embodiment of a buffer cylinder, comprising a cylinder body 1, a first cylinder cover 2 on one side of the cylinder body 1, and a second cylinder cover 4 on the other side of the cylinder body 1, wherein both the first cylinder cover 2 and the second cylinder cover 4 are connected to an air source through connecting holes 11; a piston 3 and a cylinder rod 5 are also provided inside the cylinder body 1; one end of the cylinder rod 5 passes through the second cylinder cover 4 and is exposed outside the second cylinder cover 4, and the other end of the cylinder rod 5 passes through the piston 3 and is connected to a sliding sleeve 7; a guide rod 8 is also provided inside the first cylinder cover 2, and the cylinder rod 5 is prevented from rotating along the central axis of the cylinder body 1 by the cooperation between the guide rod 8 and the sliding sleeve 7.

[0017] In summary, when an external air source causes the piston 3 to move the cylinder rod 5, the cooperation between the guide rod 8 and the sliding sleeve 7 prevents the cylinder rod 5 from rotating, thus effectively solving the problem of the clamp not being able to accurately and reliably grasp materials due to the rotation of the cylinder rod 5. Specifically, the guide rod 8 is flat, and the sliding sleeve 7 has a groove that matches the shape of the guide rod 8. The groove, in cooperation with the flat guide rod 8, prevents the cylinder rod 5 from rotating. Furthermore, the cross-section of the guide rod 8 is polygonal, and the groove on the sliding sleeve 7 also has a corresponding polygonal shape, which also achieves a directional effect, preventing the cylinder rod 5 from rotating.

[0018] Furthermore, since the cylinder rod 5 is provided with a slot 6 at the end facing the guide rod 8, and the end of the guide rod 8 passes through the sliding sleeve 7 and enters the slot 6, the slot 6 ensures that the cylinder rod 5 will not rotate while providing sufficient stroke for the piston 3 to move.

[0019] Based on the above scheme, in order to improve the buffering capacity of the device, the first cylinder head 2 and the second cylinder head 4 are also provided with throttle valve holes 13. The throttle valve holes 13 are connected to the interior of the cylinder body 1 through the provided through hole 12, and the provided throttle valve core 14 prevents the air source from being discharged outward through the throttle valve holes 13. Therefore, the intake volume of the through hole 12 can be controlled by the throttle valve core 14 to achieve buffering of the piston 3. Specifically, the lower end of the throttle valve core 14 is also provided with a conical column 15. By rotating the throttle valve core 14, the up and down movement of the conical column 15 changes the flow area between the throttle valve holes 13 and the through hole 12, thereby changing the compressed air discharge flow rate, and thus controlling the speed of the piston 3 during the buffering stroke.

[0020] Furthermore, since the cylinder rod 5 is also provided with a sealing plug 10, and both the first cylinder head 2 and the second cylinder head 4 are provided with sealing rings 9, when the cylinder rod 5 moves into the cylinder body 1, the sliding sleeve 7 contacts the sealing ring 9 in the first cylinder head 2 to guide the air source from the through hole 12 to the throttle valve hole 13, and then through the throttle valve hole 13 to the connecting hole 11 on the first cylinder head 2, thereby realizing the discharge of the air source; similarly, when the cylinder rod 5 moves out of the cylinder body 1, the sealing plug 10 contacts the sealing ring 9 in the second cylinder head 4 to guide the air source from the through hole 12 to the throttle valve hole 13, and then through the throttle valve hole 13 to the connecting hole 11 on the second cylinder head 4, thereby realizing the discharge of the air source.

[0021] Based on this, pneumatic control is adopted to overcome the problem of not being able to adjust the speed of the cylinder at the end of the stroke independently. This allows the fixture to move at high speed for most of the stroke and slowly and stably complete the last small stroke, effectively balancing the entire cycle time and stability.

[0022] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A buffer cylinder, characterized in that: Includes a cylinder body (1), a first cylinder head (2) is provided on one side of the cylinder body (1), and a second cylinder head (4) is provided on the other side of the cylinder body (1), and both the first cylinder head (2) and the second cylinder head (4) are connected to the air source through a connecting hole (11); The cylinder body (1) is also provided with a piston (3) and a cylinder rod (5); one end of the cylinder rod (5) passes through the second cylinder head (4) and is exposed outside the second cylinder head (4), and the other side of the cylinder rod (5) passes through the piston (3) and is connected to the provided sliding sleeve (7); The first cylinder head (2) is also provided with a guide rod (8), and the guide rod (8) cooperates with the sliding sleeve (7) to prevent the cylinder rod (5) from rotating along the central axis of the cylinder body (1).

2. A buffer cylinder according to claim 1, characterized in that: The cylinder rod (5) is provided with a slot (6) at one end facing the guide rod (8), and one end of the guide rod (8) passes through the sliding sleeve (7) and enters the slot (6).

3. A buffer cylinder according to claim 1 or 2, characterized in that: The first cylinder head (2) and the second cylinder head (4) are also provided with throttle valve holes (13). The throttle valve holes (13) are connected to the inside of the cylinder body (1) through the provided through hole (12), and the provided throttle valve core (14) prevents the air source from being discharged outward from the throttle valve holes (13).

4. A buffer cylinder according to claim 3, characterized in that: The lower end of the throttle valve core (14) is also provided with a tapered column (15).

5. A buffer cylinder according to claim 4, characterized in that: The cylinder rod (5) is also provided with a sealing plug (10), and the first cylinder head (2) and the second cylinder head (4) are both provided with sealing rings (9).

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