Pneumatic cylinder for buffering piston rod

Abstract

The utility model relates to the technical field of pneumatic cylinders, and discloses a pneumatic cylinder for buffering a piston rod, which comprises a mounting seat, the left side of the mounting seat is fixedly connected with an end cover, the left side of the mounting seat is fixedly connected with a motor, the output end of the motor is fixedly connected with a screw rod, and the outer ring of the left side of the screw rod is in threaded connection with a nut pair. And the left side of the nut pair is fixedly connected with a moving seat, the front end and the rear end of the moving seat penetrate through and are slidably connected with guide columns, and the guide columns are fixedly connected with the mounting seat. When a magnetic field of a magnetic switch encounters the air cylinder, a magnetic induction piece assembled in the air cylinder is inducted, so that the contact state is changed, an electric signal is output, the position of the air cylinder is controlled, the piston rods are controlled to stretch out and draw back, and the accuracy is improved; and the fixing disc extrudes the first damper and the extrusion plate, so that the extrusion plate extrudes the buffer column, and the first piston rod is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic cylinders, in particular to a pneumatic cylinder for piston rod buffering. Background Art

[0002] The cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. The air in the engine cylinder converts heat energy into mechanical energy through expansion; the gas in the compressor cylinder is compressed by the piston to increase the pressure.

[0003] After searching, the existing Chinese patent announcement number is: CN216742275U, which provides a new type of pneumatic finger cylinder. This patent adds four magnetic slots while keeping the installation size and hole spacing unchanged on the original basis to improve the convenience and speed of use. The air flow space formed by the four magnetic slots can allow air circulation to dissipate heat for the product. Stainless steel wear-resistant sheets are added on both sides of the clamp to extend the service life of the product. The clamp is cut from new materials and high-frequency quenched and ground to prevent breakage, so that users can use it with confidence.

[0004] Although the above patent allows users to use it with confidence, the above-mentioned new type of pneumatic finger cylinder still has the following problems: At present, the pneumatic cylinders on the market are all extended and retracted by pneumatic drive, which requires adjustment of the size of the pneumatic and is inconvenient to operate. The piston rod is prone to swing along the radial direction of the piston rod during reciprocating motion, affecting the reciprocating motion accuracy of the piston rod, especially at both ends of the reciprocating stroke of the cylinder, where radial vibration is particularly obvious, affecting the accuracy of the cylinder as a power actuator, and also affecting the control accuracy of the corresponding entire mechanical equipment.

[0005] In view of the above problems, a pneumatic cylinder for piston rod buffering is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a pneumatic cylinder for piston rod buffering, which solves the problem of adjusting the size of the pneumatic in the background technology and the inconvenience in operation. The piston rod is prone to swing along the radial direction of the piston rod during reciprocating motion, which affects the accuracy of the reciprocating motion of the piston rod, especially at both ends of the reciprocating stroke of the cylinder, where radial vibration is particularly obvious, affecting the accuracy of the action of the cylinder as a power actuator, and also affecting the control accuracy of the corresponding entire mechanical equipment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic cylinder for piston rod buffering, comprising a mounting seat, an end cover is fixedly connected to the left side of the mounting seat, a motor is fixedly connected to the left side of the mounting seat, a screw rod is fixedly connected to the output end of the motor, a nut pair is threadedly connected to the outer ring of the left side of the screw rod, a moving seat is fixedly connected to the left side of the nut pair, guide columns are passed through and slidably connected to the front and rear ends of the moving seat, and the guide columns are fixedly connected to the mounting seat, connecting columns are fixedly connected to the front and rear ends of the left side of the moving seat, a magnetic switch is fixedly connected to the left side of the connecting column, a cylinder tube is fixedly connected to the outer wall of the left side of the end cover, a cavity is passed through and fixedly connected to the outer ring of the cylinder tube, a rod cover is fixedly connected to the left side of the cylinder tube, a second piston rod is slidably connected to the output ends of the front and rear ends of the cavity, a bearing plate is fixedly connected to the left side of the second piston rod, a first piston rod is slidably connected to the inner wall of the left output end of the cylinder tube, and the first piston rod is fixedly connected to the bearing plate, and a buffer assembly is provided on the right side of the first piston rod.

[0008] By adopting the above technical solution, gas is injected into the cylinder tube so that the gas can enter the cavity to push the first piston rod and the second piston rod, so that the first piston rod and the second piston rod push the supporting plate at the same time, and the first piston rod and the second piston rod are controlled to extend and retract by the magnetic switch.

[0009] As a further description of the above technical solution: the buffer assembly includes a fixed plate, the fixed plate is fixedly connected to the right outer wall of the first piston rod, the right side of the fixed plate is fixedly connected to the second damper, and the right side of the second damper is fixedly connected to the fixed disk.

[0010] By adopting the above technical solution, pressure is applied to the second damper through the fixing plate, and the second damper applies pressure to the fixing disk.

[0011] As a further description of the above technical solution: a buffer column is slidably connected inside the end cover.

[0012] By adopting the above technical solution, the extrusion plate is buffered by the buffer column.

[0013] As a further description of the above technical solution: a first damper is fixedly connected to the right side of the fixed plate, and an extrusion plate is fixedly connected to the right side of the first damper.

[0014] By adopting the above technical solution, the fixed disk applies pressure to the first damper, and transmits the pressure to the extrusion plate.

[0015] As a further description of the above technical solution: a slide groove is provided inside the fixed plate, and sliders are slidably connected to the inner walls at both ends of the slide groove.

[0016] By adopting the above technical solution, the sliding block is allowed to slide on the inner wall through the sliding groove.

[0017] As a further description of the above technical solution: a tension spring is fixedly connected to the opposite side of the sliding block, and the tension spring is fixedly connected to the fixed disk.

[0018] By adopting the above technical solution, the stretch spring is squeezed by the slider to perform buffering.

[0019] As a further description of the above technical solution: the upper and lower ends of the right side of the fixed plate are fixedly connected with a first connecting block, the right side of the first connecting block is rotatably connected with a second oblique rod, and the second oblique rod is rotatably connected to the slider.

[0020] By adopting the above technical solution, the second oblique rod is pressed by the first connecting block, so that the second oblique rod rotates.

[0021] As a further description of the above technical solution: the front and rear ends of the left side of the extrusion plate are fixedly connected with a second connecting block, the left side of the second connecting block is rotatably connected with a first oblique rod, and the first oblique rod is rotatably connected to the slider.

[0022] By adopting the above technical solution, the pressure is buffered by the first inclined rod.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. The utility model provides a pneumatic cylinder for piston rod buffering. First, the motor drives the lead screw to rotate, so that the lead screw rotation drives the nut pair and the moving seat to move, so that the left connecting column of the moving seat moves, and drives the magnetic switch to move. When the magnetic field of the magnetic switch encounters the cylinder, it senses the magnetic sensing sheet installed inside the cylinder, thereby changing the contact state and outputting an electrical signal to realize the control of the cylinder position, control the extension and retraction of the piston rod, and improve accuracy.

[0025] 2. The utility model provides a pneumatic cylinder for piston rod buffering, which contracts the first piston rod so that the fixed plate squeezes the second damper, and the fixed plate squeezes the first damper on the extrusion plate, so that the extrusion plate squeezes the buffer column to perform buffering, and buffering is performed through the first connecting block, the second oblique rod, the sliding block and the tension spring to protect the first piston rod and increase its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the fixed disk of the utility model.

[0029] In the figure: 1. mounting base; 2. end cover; 3. motor; 4. guide column; 5. screw rod; 6. nut pair; 7. moving seat; 8. connecting column; 9. magnetic switch; 10. cylinder tube; 11. rod cover; 12. cavity; 13. second piston rod; 14. first piston rod; 15. bearing plate; 16. buffer column; 17. extrusion plate; 18. first damper; 19. second damper; 20. fixed plate; 21. first connecting block; 22. second connecting block; 23. first oblique rod; 24. second oblique rod; 25. slider; 26. slide groove; 27. tension spring; 28. fixing plate. DETAILED DESCRIPTION

[0030] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0032] Reference Figure 1 The utility model is a pneumatic cylinder for piston rod buffering, comprising a mounting seat 1, an end cover 2 is fixedly connected to the left side of the mounting seat 1, a cylinder tube 10 is fixedly connected to the left outer wall of the end cover 2, a cavity 12 is penetrated and fixedly connected to the outer ring of the cylinder tube 10, a rod cover 11 is fixedly connected to the left side of the cylinder tube 10, the output ends at both ends of the cavity 12 are slidably connected to the second piston rod 13, the left side of the second piston rod 13 is fixedly connected to the bearing plate 15, the inner wall of the left output end of the cylinder tube 10 is slidably connected to the first piston rod 14, and the first piston rod 14 is fixedly connected to the bearing plate 15, and air is injected through the cylinder tube 10 so that there is air pressure in the cavity 12, so that the second piston rods 13 on both sides are extended and retracted together with the first piston rod 14, and force is exerted on the bearing plate 15 together.

[0033] Reference Figure 1 and Figure 2The left side of the mounting seat 1 is fixedly connected to the motor 3, and the output end of the motor 3 is fixedly connected to a screw rod 5. The outer ring of the left side of the screw rod 5 is threadedly connected to a nut pair 6. The left side of the nut pair 6 is fixedly connected to a moving seat 7. The front and rear ends of the moving seat 7 are penetrated and slidably connected with guide columns 4, and the guide columns 4 are fixedly connected to the mounting seat 1. The front and rear ends of the left side of the moving seat 7 are fixedly connected to connecting columns 8. The left side of the connecting column 8 is fixedly connected to a magnetic switch 9. The screw rod 5 is driven by the motor 3 to rotate, and the nut pair 6 is rotated by the screw rod 5 to move. The nut pair 6 is fixed to the moving seat 7, so that the moving seat 7 moves. The moving seat 7 is caused and limited by the guide column 4, so that the connecting column 8 on the left side of the moving seat 7 moves, driving the magnetic switch 9 to move. The magnetic switch 9 uses the magnetic field generated by the magnet to sense the electric field inside the metal to realize the opening and closing of the contact. When the magnetic field of the magnetic switch 9 encounters the cylinder, it senses the magnetic induction sheet assembled inside the cylinder, thereby changing the contact state, outputting an electrical signal, realizing the control of the cylinder position, controlling the piston rod to extend and retract, and improving accuracy.

[0034] Reference Figure 3 A buffer assembly is provided on the right side of the first piston rod 14, and the buffer assembly includes a fixed plate 28, the fixed plate 28 is fixedly connected to the outer wall on the right side of the first piston rod 14, the second damper 19 is fixedly connected to the right side of the fixed plate 28, the fixed plate 20 is fixedly connected to the right side of the second damper 19, the buffer column 16 is slidably connected inside the end cover 2, the first damper 18 is fixedly connected to the right side of the fixed plate 20, the extrusion plate 17 is fixedly connected to the right side of the first damper 18, a slide groove 26 is provided inside the fixed plate 20, and the inner walls of the upper and lower ends of the slide groove 26 are slidably connected to sliders 25, the opposite side of the slider 25 is fixedly connected to a tension spring 27, and the tension spring 27 is fixedly connected to the fixed plate 20, the upper and lower ends of the right side of the fixed plate 28 are fixedly connected to the first connecting block 21, the right side of the first connecting block 21 is rotatably connected to the second oblique rod 24, and the second oblique rod 24 is connected to the The slider 25 is rotatably connected, and the front and rear ends of the left side of the extrusion plate 17 are fixedly connected with the second connecting block 22. The left side of the second connecting block 22 is rotatably connected with the first oblique rod 23, and the first oblique rod 23 is rotatably connected with the slider 25. The first piston rod 14 is contracted, so that the fixed plate 28 squeezes the second damper 19, and the fixed plate 20 squeezes the first damper 18 on the extrusion plate 17, so that the extrusion plate 17 squeezes the buffer column 16 for buffering. The fixed plate 28 changes, so that the position of the first connecting block 21 changes, so that the second oblique rod 24 rotates, driving the slider 25 to slide on the inner wall of the slide groove 26, and the slider 25 squeezes the tension spring 27 for buffering. The slider 25 moves, driving the first oblique rod 23 to rotate, and rotates with the second connecting block 22 for buffering.

[0035] Working principle: The motor 3 drives the screw rod 5 to rotate, and the screw rod 5 rotates the nut pair 6 to move. The nut pair 6 is fixed to the moving seat 7, so that the moving seat 7 moves. The moving seat 7 is led and limited by the guide column 4, so that the connecting column 8 on the left side of the moving seat 7 moves, driving the magnetic switch 9 to move. The magnetic switch 9 uses the magnetic field generated by the magnet to sense the electric field inside the metal to realize the opening and closing of the contact. When the magnetic field of the magnetic switch 9 encounters the cylinder, it senses the magnetic induction sheet installed inside the cylinder, thereby changing the contact state and outputting an electrical signal to realize the control of the cylinder position, control the piston rod to extend and retract, and improve the cylinder position. High precision, through the contraction of the first piston rod 14, the fixed plate 28 squeezes the second damper 19, the fixed plate 20 squeezes the first damper 18 on the extrusion plate 17, so that the extrusion plate 17 squeezes the buffer column 16 for buffering, the fixed plate 28 changes, the position of the first connecting block 21 changes, the second inclined rod 24 rotates, driving the slider 25 to slide on the inner wall of the slide groove 26, the slider 25 squeezes the tension spring 27 for buffering, the slider 25 moves, driving the first inclined rod 23 to rotate, and rotates with the second connecting block 22 for buffering.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic cylinder for piston rod buffering, comprising a mounting seat (1), characterized in that: The left side of the mounting seat (1) is fixedly connected to an end cover (2), the left side of the mounting seat (1) is fixedly connected to a motor (3), the output end of the motor (3) is fixedly connected to a lead screw (5), the left outer ring of the lead screw (5) is threadedly connected to a nut pair (6), the left side of the nut pair (6) is fixedly connected to a moving seat (7), the front and rear ends of the moving seat (7) are penetrated and slidably connected to guide columns (4), and the guide columns (4) are fixedly connected to the mounting seat (1), the front and rear ends of the left side of the moving seat (7) are fixedly connected to connecting columns (8), and the left side of the connecting column (8) is fixedly connected to a magnetic switch (9) ), the left outer wall of the end cover (2) is fixedly connected to a cylinder tube (10), the outer ring of the cylinder tube (10) passes through and is fixedly connected to a cavity (12), the left side of the cylinder tube (10) is fixedly connected to a rod cover (11), the front and rear output ends of the cavity (12) are both slidably connected to a second piston rod (13), the left side of the second piston rod (13) is fixedly connected to a bearing plate (15), the inner wall of the left output end of the cylinder tube (10) is slidably connected to a first piston rod (14), and the first piston rod (14) is fixedly connected to the bearing plate (15), and a buffer assembly is arranged on the right side of the first piston rod (14).

2. A pneumatic cylinder for piston rod buffering according to claim 1, characterized in that: The buffer assembly comprises a fixed plate (28), wherein the fixed plate (28) is fixedly connected to the right outer wall of the first piston rod (14), the right side of the fixed plate (28) is fixedly connected to a second damper (19), and the right side of the second damper (19) is fixedly connected to a fixed disk (20).

3. A pneumatic cylinder for piston rod buffering according to claim 1, characterized in that: A buffer column (16) is slidably connected inside the end cover (2).

4. A pneumatic cylinder for piston rod buffering according to claim 2, characterized in that: A first damper (18) is fixedly connected to the right side of the fixed plate (20), and an extrusion plate (17) is fixedly connected to the right side of the first damper (18).

5. A pneumatic cylinder for piston rod buffering according to claim 2, characterized in that: A sliding groove (26) is provided inside the fixed plate (20), and sliding blocks (25) are slidably connected to the inner walls at both the upper and lower ends of the sliding groove (26).

6. A pneumatic cylinder for piston rod buffering according to claim 5, characterized in that: A tension spring (27) is fixedly connected to the opposite side of the slider (25), and the tension spring (27) is fixedly connected to the fixed disk (20).

7. A pneumatic cylinder for piston rod buffering according to claim 2, characterized in that: The upper and lower ends of the right side of the fixed plate (28) are fixedly connected to a first connecting block (21), the right side of the first connecting block (21) is rotatably connected to a second oblique rod (24), and the second oblique rod (24) is rotatably connected to a sliding block (25).

8. A pneumatic cylinder for piston rod buffering according to claim 4, characterized in that: The left front and rear ends of the extrusion plate (17) are fixedly connected to a second connection block (22), the left side of the second connection block (22) is rotatably connected to a first oblique rod (23), and the first oblique rod (23) is rotatably connected to a slider (25).

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