Floating cylinder convenient for automatic centering

Abstract

The utility model discloses a floating cylinder convenient for automatic centering. The floating cylinder comprises a main seat body, a sliding seat and a middle shaft module, the sliding seat is arranged above the main seat body in a manner of horizontally displacing relative to the main seat body, displacement cavities are respectively formed in the sliding seat and the main seat body, and each displacement cavity is sequentially provided with an opening penetrating area, a resetting area and a positioning area; a barrel cavity area is formed in the position, at the junction of the reset area and the positioning area, of the interior of the main base body. A pneumatic piston capable of ascending and descending relative to the positioning area is installed in the barrel cavity area. The middle shaft module comprises a ball retainer arranged between the main seat body and the sliding seat, a middle shaft which can vertically penetrate through the center of the ball retainer in a lifting manner, and two tower springs which are oppositely arranged at the two ends of the middle shaft in a sleeving manner up and down; one end of each middle shaft correspondingly penetrates into one displacement cavity, the section, located in the reset area, of each middle shaft is sleeved with the corresponding tower spring, and the section, located in the positioning area, of each middle shaft is sleeved with a pressing piece in a penetrating mode. The service life of the floating cylinder can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of floating cylinders, in particular to a floating cylinder that is convenient for automatic centering. Background Art

[0002] The internal structure of the floating cylinder adopts a flat turbine spring reset. The elastic force enables the middle connecting shaft to move in any direction, front and back, left and right, tilt and rotate. Smooth movement is achieved through ball bearings. The piston is ventilated and pressed down to lock the movable parts on the upper part of the cylinder, so that it can be kept in any position.

[0003] However, the existing floating cylinder uses a flat turbine spring. Due to the uneven force applied to the flat turbine spring, the cylinder reset may not be accurate enough. In addition, due to its own structure, the flat turbine spring may cause uneven force when the ball bearing moves in any direction, thereby reducing the service life of the cylinder. Utility Model Content

[0004] The utility model aims to provide a floating cylinder which is convenient for automatic centering.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A floating cylinder for automatic centering comprises a main seat, a slide, and a central axis module; the slide is arranged above the main seat and can be horizontally displaced relative to the main seat; the slide and the main seat each form a displacement cavity for one end of the central axis module to pass through, and each displacement cavity is sequentially formed with a penetration area, a reset area, and a positioning area along the insertion direction of the central axis module; the main seat has a cylindrical cavity area formed at the intersection of the reset area and the positioning area, and a pneumatic piston is installed in the cylindrical cavity area and can be raised and lowered relative to the positioning area;

[0007] The central axis module includes a ball retainer arranged between the main seat body and the slide seat, a central axis that can be raised and lowered and vertically penetrates the center of the ball retainer, and two tower springs that are relatively sleeved on the two ends of the central axis; one end of each central axis is correspondingly inserted into a displacement cavity, and a section of the central axis located in the reset area is sleeved with the tower spring and the large-diameter end of the tower spring is arranged toward the penetration area. A section of the central axis located in the positioning area is sleeved with a pressure plate, and the outer diameter of the pressure plate is larger than the inner diameter of the pneumatic piston, so that when the pneumatic piston descends relative to the positioning area, the pneumatic piston can press against the pressure plate at the bottom end of the central axis.

[0008] As a further technical solution of the present utility model: the main seat body includes a base, a cylinder seat arranged on the top of the base and a first pad embedded in the top surface of the cylinder seat; in the displacement cavity of the main seat body, the positioning area is arranged on the top of the base, the reset area passes through the top and bottom surfaces of the cylinder seat, the cylinder cavity area is arranged on the bottom surface of the cylinder seat, and the through-hole area passes through the top and bottom surfaces of the first pad.

[0009] As a further technical solution of the present invention: the slide includes a slide body, a seat cover nested in the top of the slide body and a second pad embedded in the bottom surface of the slide body; in the displacement cavity of the slide, the positioning area is set at the top of the slide body, the reset area is set at the bottom of the slide body, and the through-hole area passes through the top and bottom surfaces of the second pad.

[0010] As a further technical solution of the present invention: the cylinder seat is provided with a locking air hole and a releasing air hole connected to the cylinder cavity area, one above and one below; the pneumatic piston separates the relative displacement cavity between the connection between the cylinder cavity area and the locking air hole and the connection between the cylinder cavity area and the releasing air hole, so that when compressed gas is input from the locking air hole into the cylinder cavity area, the pneumatic piston is driven to descend relative to the positioning area; when compressed gas is input from the releasing air hole into the cylinder cavity area, the pneumatic piston is driven to rise and reset relative to the positioning area.

[0011] As a further technical solution of the present invention: sealing rings are respectively embedded on the outer wall and the inner wall of the pneumatic piston, the contact surface between the base and the pneumatic piston, and the contact surface between the base and the cylinder seat.

[0012] As a further technical solution of the present invention: one end of the central axis that penetrates into the sliding seat is provided with a positioning pin after passing through the pressing sheet.

[0013] As a further technical solution of the present invention: the ball retainer comprises a retainer body, a plurality of balls and a bottom cover; a fixed axis opening is formed in the center of the retainer body, which passes through its top and bottom surfaces and is used to position the center axis; an inner ring groove is recessed along the fixed axis opening on the bottom surface of the retainer body and an outer ring groove is recessed along the edge, and a bead loading portion is formed between the inner ring groove and the outer ring groove, which is raised relative to the top and bottom surfaces of the retainer body; a plurality of bead loading holes are provided at intervals on the bead loading portion, which pass through its top and bottom surfaces, and each bead loading hole is ∩-shaped; each ball is correspondingly loaded into a bead loading hole; the bottom cover is sealed to the bottom surface of the bead loading portion, and a bead blocking opening is formed on the bottom cover corresponding to each bead loading hole, and the balls in the bead loading holes are limited by the bottom cover, and the two ends of the balls pass through the top of the bead loading holes and the bead blocking opening.

[0014] As a further technical solution of the present invention: the inner ring groove and the outer ring groove are both provided with a plurality of reinforcing ribs at intervals in a circular array therein; the inner edge and the outer edge of the bottom cover are respectively provided with a bayonet opening corresponding to each reinforcing rib of the inner ring groove and each reinforcing rib of the outer ring groove, for the bottom cover to engage with the reinforcing rib through the bayonet opening.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention proposes a floating cylinder that is easy to automatically align through the cooperation between the main seat body, the slide and the central axis module, and the pneumatic piston is raised and lowered relative to the positioning area, and the central axis is switched between a locked state and a released state by the up and down driving force provided by the two tower springs. When the central axis is in the released state, when the slide is subjected to a lateral thrust, the ball retainer can drive the slide to move horizontally relative to the main seat body. After the horizontal displacement and the unlocking state, under the lateral driving force provided by the two tower springs, the central axis and the slide are reset relative to the main seat body, realizing automatic alignment, making the force on the central axis more uniform, and effectively improving the service life of the floating cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of a floating cylinder for easy automatic alignment.

[0017] Figure 2 Cross-sectional view of the floating cylinder in use for easy automatic alignment.

[0018] Figure 3 This is the internal cross-section of the main seat body and the slide.

[0019] Figure 4 This is the principle diagram of the lifting of the pneumatic piston.

[0020] Figure 5 Schematic diagram of the central axis module.

[0021] Figure 6 Schematic diagram of the bottom surface of the retainer body. DETAILED DESCRIPTION

[0022] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the scope of protection of the present invention.

[0023] See also Figure 1 、 Figure 2 and Figure 3 A floating cylinder that facilitates automatic centering includes a main body 10, a slide 20, and a central axis module 30; the slide 20 is arranged above the main body 10 and can be horizontally displaced relative to the main body 10. The slide 20 and the main body 10 each form a displacement cavity 40 for one end of the central axis module 30 to penetrate therein, and each displacement cavity 40 is sequentially formed with a penetration area 41, a reset area 42, and a positioning area 43 along the insertion direction of the central axis module 30; the main body 10 has a barrel area 44 formed at the intersection of the reset area 42 and the positioning area 43, and a pneumatic piston 50 is installed in the barrel area 44 and can be raised and lowered relative to the positioning area 43;

[0024] See also Figure 5 The central axis module 30 includes a ball retainer 31 arranged between the main seat body 10 and the slide seat 20, a central axis 32 that can be lifted and lowered and vertically penetrates the center of the ball retainer 31, and two tower springs 33 that are relatively sleeved on the two ends of the central axis 32; one end of each central axis 32 is correspondingly inserted into a displacement cavity 40, and a section of the central axis 32 located in the reset area 42 is sleeved with the tower spring 33 and the large-diameter end of the tower spring 33 is arranged toward the penetration area 41, and a section of the central axis 32 located in the positioning area 43 is sleeved with a pressing piece 321, and the outer diameter of the pressing piece 321 is larger than the inner diameter of the pneumatic piston 50, so that the pneumatic piston 50 can move relative to the central axis 32. When the positioning area 43 descends, the pneumatic piston 50 presses against the pressure piece 321 at the bottom end of the central shaft 32, driving the central shaft 32 to descend relative to the ball retainer 31. The two ends of the central shaft 32 are against the positioning area 43, and the central shaft 32 is in a locked state; and the pneumatic piston 50 rises relative to the positioning area 43, and after the pressure on the central shaft 32 is released, the central shaft 32 is reset relative to the ball retainer 31 under the driving force provided by the two tower springs 33. The two ends of the central shaft 32 have no contact with the positioning area 43, and the central shaft 32 is in a released state. When the slide 20 is subjected to lateral thrust, the ball retainer 31 drives the slide 20 to move horizontally relative to the main seat body 10.

[0025] Furthermore, in this embodiment, the main seat body 10 includes a base 11, a cartridge seat 12 arranged on the top of the base 11, and a first pad 13 embedded in the top surface of the cartridge seat 12; in the displacement cavity 40 of the main seat body 10, the positioning area 43 is arranged on the top of the base 11, the reset area 42 passes through the top and bottom surfaces of the cartridge seat 12, the cartridge cavity area 44 is arranged on the bottom surface of the cartridge seat 12, and the through-mouth area 41 passes through the top and bottom surfaces of the first pad 13.

[0026] Furthermore, in this embodiment, the slide 20 includes a slide body 21, a seat cover 22 nested in the top of the slide body 21, and a second pad 23 embedded in the bottom surface of the slide body 21; in the displacement cavity 40 of the slide 20, the positioning area 43 is set at the top of the slide body 21, the reset area 42 is set at the bottom of the slide body 21, and the through-hole area 41 passes through the top and bottom surfaces of the second pad 23.

[0027] Further, in this embodiment, referring to Figure 4 The cylinder seat 12 is provided with a locking air hole 101 and a releasing air hole 102 connected to the cylinder cavity area 44 on the upper and lower sides. The pneumatic piston 50 separates the connection between the cylinder cavity area 44 and the locking air hole 101 and the connection between the cylinder cavity area 44 and the releasing air hole 102 relative to the displacement chamber 40, so that when the compressed gas is input from the locking air hole 101 into the cylinder cavity area 44, the pneumatic piston 50 is driven to descend relative to the positioning area 43; when the compressed gas is input from the releasing air hole 102 into the cylinder cavity area 44, the pneumatic piston 50 is driven to rise and reset relative to the positioning area 43.

[0028] Furthermore, in this embodiment, a sealing ring 501 is embedded on the outer wall and inner wall of the pneumatic piston 50, the contact surface between the base 11 and the pneumatic piston 50, and the contact surface between the base 11 and the cylinder seat 12, so as to improve the airtightness when the pneumatic piston 50 separates the connection between the cylinder cavity area 44 and the locking air hole 101 and the connection between the cylinder cavity area 44 and the release air hole 102 relative to the displacement cavity 40.

[0029] Furthermore, in this embodiment, one end of the central shaft 32 that penetrates into the sliding seat 20 is provided with a positioning pin 322 after passing through the pressing piece 321 for limiting the position.

[0030] Further, in this embodiment, refer to Figure 2 、 Figure 5 and Figure 6 The ball retainer 31 includes a retainer body 311, a plurality of balls 312 and a bottom cover 313; a fixed axis opening 301 is formed in the center of the retainer body 311, which passes through the top and bottom surfaces thereof and is used to position the center axis 32; an inner ring groove 302 is formed in the bottom surface of the retainer body 311 along the fixed axis opening 301, and an outer ring groove 303 is formed in the bottom surface of the retainer body 311. A ball receiving portion is formed between the inner ring groove 302 and the outer ring groove 303, which is raised relative to the top and bottom surfaces of the retainer body 311. 304; a plurality of bead loading holes 61 are provided on the bead loading portion 304 at intervals, which pass through the top and bottom surfaces thereof, and each bead loading hole 61 is ∩-shaped; each ball 312 is correspondingly loaded into a bead loading hole 61; the bottom cover 313 is sealed to the bottom surface of the bead loading portion 304, and a bead blocking opening 62 is formed on the bottom cover 313 corresponding to each bead loading hole 61, and the ball 312 in the bead loading hole 61 is limited by the bottom cover 313, and both ends of the ball 312 pass through the top of the bead loading hole 61 and the bead blocking opening 62.

[0031] It is understandable that when assembling the floating cylinder that is easy to automatically align, the ball retainer 31 can be assembled in advance, thereby improving the overall assembly efficiency of the floating cylinder.

[0032] Furthermore, in this embodiment, the inner ring groove 302 and the outer ring groove 303 are both provided with a plurality of reinforcing ribs 63 at intervals in a circular array therein; the inner edge and the outer edge of the bottom cover 313 are respectively provided with a bayonet opening corresponding to each reinforcing rib 63 of the inner ring groove 302 and each reinforcing rib 63 of the outer ring groove 303, for the bottom cover 313 to engage the reinforcing rib 63 with the bayonet opening and be fixed to the bottom surface of the bead mounting portion 304.

[0033] Furthermore, in this embodiment, a plurality of sensors are provided outside the floating cylinder for facilitating automatic centering, and whether the locking position is completed is determined by detecting the presence or absence of a signal.

[0034] It can be understood that the present invention provides a method for using a floating cylinder that is convenient for automatic centering, as follows: when horizontal displacement is required, compressed gas is input into the cylinder cavity area 44 from the release hole 102, driving the pneumatic piston 50 to rise relative to the positioning area 43. Under the driving force in the up and down directions provided by the two tower springs 33, the central shaft 32 is reset relative to the ball retainer 31. The two ends of the central shaft 32 are not in contact with the positioning area 43. The central shaft 32 is in a released state, so that when the slide 20 is subjected to a lateral thrust, the ball retainer 31 drives the slide 20 to a horizontal position relative to the main seat body 10. and after the horizontal displacement, when locking is required, when the compressed gas is input into the cylinder cavity area 44 from the locking air hole 101, the pneumatic piston 50 is driven to descend relative to the positioning area 43, and the pneumatic piston 50 is pressed against the pressing piece 321 at the bottom end of the central shaft 32, driving the central shaft 32 to descend relative to the ball retainer 31, and the two ends of the central shaft 32 are against the positioning area 43, and the central shaft 32 is in a locked state; and after the unlocking state is released, under the lateral driving force provided by the two tower springs 33, the central shaft 32 and the slide 20 are reset relative to the main seat body 10, realizing automatic centering.

[0035] In summary, the present invention is a floating cylinder that is easy to automatically center through the cooperation between the main seat body 10, the slide 20 and the central axis module 30, so that the pneumatic piston 50 is raised and lowered relative to the positioning area 43, and the two tower springs 33 provide an up and down driving force, so that the central axis 32 can switch between a locked state and a released state. When the central axis 32 is in the released state, when the slide 20 is subjected to a lateral thrust, the ball retainer 31 can drive the slide 20 to move horizontally relative to the main seat body 10. After the horizontal displacement and the unlocking state, under the lateral driving force provided by the two tower springs 33, the central axis 32 and the slide 20 are reset relative to the main seat body 10, realizing automatic centering, making the force on the central axis 32 more uniform, and effectively improving the service life of the floating cylinder.

[0036] As long as it does not violate the creative idea of ​​the present invention, any combination of various different embodiments of the present invention should be regarded as the content disclosed by the present invention; within the technical concept of the present invention, any simple modification of the technical solution and any combination of different embodiments that do not violate the creative idea of ​​the present invention should be within the protection scope of the present invention.

Claims

1. A floating cylinder that facilitates automatic centering, characterized by: The invention comprises a main seat body (10), a slide seat (20) and a central axis module (30); the slide seat (20) is arranged above the main seat body (10) so as to be horizontally displaceable relative to the main seat body (10); the slide seat (20) and the main seat body (10) each form a displacement cavity (40) for one end of the central axis module (30) to penetrate therein; each displacement cavity (40) is sequentially formed with a penetration area (41), a reset area (42) and a positioning area (43) along the penetration direction of the central axis module (30); the main seat body (10) has a barrel area (44) formed at the intersection of the reset area (42) and the positioning area (43); a pneumatic piston (50) capable of rising and falling relative to the positioning area (43) is installed in the barrel area (44); The central axis module (30) comprises a ball retainer (31) arranged between the main seat body (10) and the slide seat (20), a central axis (32) vertically passing through the center of the ball retainer (31) and capable of being lifted and lowered, and two tower springs (33) relatively sleeved on the two ends of the central axis (32); one end of each central axis (32) correspondingly penetrates into a displacement cavity (40); a section of the central axis (32) located in the reset area (42) is sleeved with the tower spring (33), and the large-diameter end of the tower spring (33) is arranged toward the penetration area (41); a section of the central axis (32) located in the positioning area (43) is sleeved with a pressing plate (321), and the outer diameter of the pressing plate (321) is larger than the inner diameter of the pneumatic piston (50), so that when the pneumatic piston (50) descends relative to the positioning area (43), the pneumatic piston (50) can press against the pressing plate (321) at the bottom end of the central axis (32).

2. The floating cylinder for facilitating automatic centering according to claim 1, characterized in that: The main seat body (10) comprises a base (11), a cartridge seat (12) arranged on the top of the base (11), and a first pad (13) embedded in the top surface of the cartridge seat (12); in the displacement cavity (40) of the main seat body (10), a positioning area (43) is arranged on the top of the base (11), a reset area (42) passes through the top and bottom surfaces of the cartridge seat (12), a cartridge cavity area (44) is arranged on the bottom surface of the cartridge seat (12), and a through-hole area (41) passes through the top and bottom surfaces of the first pad (13).

3. The floating cylinder for facilitating automatic centering according to claim 1, characterized in that: The slide (20) comprises a slide body (21), a seat cover (22) nested in the top of the slide body (21), and a second pad (23) embedded in the bottom of the slide body (21); in the displacement cavity (40) of the slide (20), a positioning area (43) is arranged at the top of the slide body (21), a reset area (42) is arranged at the bottom of the slide body (21), and a through-hole area (41) passes through the top and bottom surfaces of the second pad (23).

4. The floating cylinder for facilitating automatic centering according to claim 1, characterized in that: The cylinder seat (12) is provided with a locking air hole (101) and a releasing air hole (102) in communication with the cylinder cavity area (44) at the upper and lower sides. The pneumatic piston (50) separates the communication portion between the cylinder cavity area (44) and the locking air hole (101) and the communication portion between the cylinder cavity area (44) and the releasing air hole (102) from the relative displacement cavity (40). When compressed gas is input from the locking air hole (101) into the cylinder cavity area (44), the pneumatic piston (50) is driven to descend relative to the positioning area (43); when compressed gas is input from the releasing air hole (102) into the cylinder cavity area (44), the pneumatic piston (50) is driven to rise and reset relative to the positioning area (43).

5. The floating cylinder for facilitating automatic centering according to claim 1, characterized in that: Sealing rings (501) are embedded in the outer wall and inner wall of the pneumatic piston (50), the contact surface between the base (11) and the pneumatic piston (50), and the contact surface between the base (11) and the cylinder seat (12).

6. The floating cylinder for facilitating automatic centering according to claim 1, characterized in that: One end of the central shaft (32) that penetrates into the sliding seat (20) is provided with a positioning pin (322) after passing through the pressing sheet (321).

7. The floating cylinder for facilitating automatic centering according to claim 1, characterized in that: The ball retainer (31) comprises a retainer body (311), a plurality of balls (312) and a bottom cover (313); a fixed axis opening (301) is formed in the center of the retainer body (311) and passes through the top and bottom surfaces thereof for positioning the center axis (32); an inner ring groove (302) is formed on the bottom surface of the retainer body (311) along the fixed axis opening (301) and an outer ring groove (303) is formed along the edge; a bead receiving portion (303) is formed between the inner ring groove (302) and the outer ring groove (303) and is raised relative to the top and bottom surfaces of the retainer body (311). 4); a plurality of bead loading holes (61) are provided on the bead loading portion (304) at intervals and pass through the top and bottom surfaces thereof, and each bead loading hole (61) is in a ∩ shape; each ball (312) is correspondingly loaded into a bead loading hole (61); the bottom cover (313) is sealed to the bottom surface of the bead loading portion (304), and a bead blocking opening (62) is formed on the bottom cover (313) corresponding to each bead loading hole (61); the ball (312) in the bead loading hole (61) is limited by the bottom cover (313), and both ends of the ball (312) pass through the top of the bead loading hole (61) and the bead blocking opening (62).

8. The floating cylinder for facilitating automatic centering according to claim 7, characterized in that: The inner ring groove (302) and the outer ring groove (303) are both provided with a plurality of reinforcing ribs (63) at intervals in a circular array therein; the inner edge and the outer edge of the bottom cover (313) are respectively provided with a bayonet opening corresponding to each reinforcing rib (63) of the inner ring groove (302) and each reinforcing rib (63) of the outer ring groove (303), so that the bottom cover (313) can engage the reinforcing rib (63) with the bayonet opening.

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