CN210440318U

CN210440318U - Corner cylinder

Info

Publication number: CN210440318U
Application number: CN201921476297.3U
Authority: CN
Inventors: 徐亮; 薛言坤; 于云凯; 李和东; 朱立伍
Original assignee: Shandong Zhengming Fluid Control Equipment Co Ltd
Current assignee: Shandong Zhengming Fluid Control Equipment Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-05-01
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a corner cylinder, which relates to the technical field of clamps and comprises a cylinder body, a piston and a mounting seat, wherein the mounting seat is fixedly connected at one end of the cylinder body, the piston is connected in the cylinder body in a sealing and sliding way and divides the cylinder body into a front cavity and a rear cavity, the front cavity and the rear cavity are respectively communicated with a first oil inlet/outlet and a second oil inlet/outlet, the mounting seat is fixedly connected with a guide shaft, the piston is connected outside the guide shaft in a sliding way along the axial direction of the guide shaft, and the piston and the guide shaft are coaxially arranged; a plurality of guide grooves are formed in the periphery of the guide shaft, and balls connected with the guide grooves are arranged on the piston.

Description

Corner cylinder

Technical Field

The utility model relates to a technical field of anchor clamps, more specifically say, it relates to a corner jar.

Background

The corner cylinder is a clamp driven by air pressure or hydraulic pressure, is suitable for a special machine and a jig for mass production of parts, and can greatly improve the automation degree of the jig clamps for machining, assembling, welding and the like.

In the prior art, chinese patent with patent number CN105257624B proposes a low rotation resistance single-acting corner cylinder, which includes a cylinder body, a piston and a return spring installed in the cylinder body, a sealing ring is disposed between the piston and the cylinder body, a pressure chamber is disposed in the cylinder body, liquid/gas entering on the cylinder body is communicated with the pressure chamber, a corner pressure plate rod is further provided, the corner pressure plate rod passes through the piston, one end of the corner pressure plate rod is connected with a pressure plate, the other end of the corner pressure plate rod extends into the cylinder body and is fixed with one end of a corner guide rod, a corner guide sleeve is fixed on the cylinder body, a corner guide structure is disposed between the corner guide rod and the corner guide sleeve, the guide structure is composed of a guide pin and a guide groove, the guide pin is located in the guide groove. When hydraulic pressure or air pressure enters the pressure cavity, the piston is pushed to move leftwards, the corner pressure plate rod and the corner guide rod are enabled to generate spiral motion relative to the cylinder body under the action of the spiral groove shape of the corner pressure plate rod and the corner guide rod, so that the pressure plate is driven to spirally move leftwards, after the piston rotates for a certain angle, the guide pin enters the straight groove part of the guide groove, and the pressure plate is driven to linearly move leftwards to realize the pressing function of the corner cylinder.

The above prior art has the following disadvantages: when the corner cylinder works, the guide pin slides along the guide groove, but at the corner of the guide groove, the guide pin is easy to be blocked, so that the guide pin is easy to break when sliding.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a corner jar, through setting up ball and guide way cooperation, when the piston slides, the ball resistance that receives when rolling in the guide way is less, makes the ball roll and slides and is difficult for taking place the card pause or pause phenomenon to make the ball be difficult for being destroyed.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a corner cylinder comprises a cylinder body, a piston and a mounting seat, wherein the mounting seat is fixedly connected to one end of the cylinder body, the piston is connected in the cylinder body in a sealing sliding mode and divides the cylinder body into a front cavity and a rear cavity, a first oil inlet/outlet and a second oil inlet/outlet are respectively communicated and arranged on the front cavity and the rear cavity, a guide shaft is fixedly connected to the mounting seat, the piston is connected outside the guide shaft in a sliding mode along the axial direction of the guide shaft, and the piston and the guide shaft are coaxially arranged; a plurality of guide grooves are formed in the periphery of the guide shaft, and balls connected with the guide grooves in a rolling mode are arranged on the piston.

By adopting the technical scheme, hydraulic oil flows into the rear cavity through the second oil inlet/outlet, hydraulic oil in the front cavity flows back through the first oil inlet/outlet, the piston slides towards the direction far away from the cylinder body, the guide shaft is fixedly connected with the mounting seat and cannot move, and the ball is matched with the guide shaft and the piston, so that when the hydraulic oil drives the piston to slide along the guide groove towards the direction far away from the mounting seat, the resistance borne by the ball during rolling friction during sliding with the guide groove is smaller, the ball is not easy to clamp when rolling in the guide groove, and the guide shaft is separated from the piston, so that the acting force of the hydraulic oil on the piston is reduced, and the energy consumption is reduced; the stability of piston and guiding axle gliding motion has been improved in the setting of many guide slots.

Furthermore, the guide groove comprises a spiral section and a straight line section, wherein the two ends of the spiral section are axially arranged along the guide shaft.

Through adopting above-mentioned technical scheme, the ball slides along the guide way and drives the piston and slide to the direction of keeping away from the fixing base through the straightway earlier, accomplishes the rotation when continuing to slide to the direction of keeping away from the fixing base through the spiral section again, realizes the locking of work piece through the straightway at last.

Furthermore, a plurality of radial through holes are formed in the piston, one part of the ball is arranged in the through holes, the other part of the ball is arranged in the guide groove, and a pin for limiting the position of the ball is arranged in the through holes.

Through adopting above-mentioned technical scheme, the pin is spacing with the ball in the through-hole, has improved the runnability of corner jar, has seted up the through-hole on the piston, is convenient for take out the pin and the ball, the installation work in the production of being convenient for.

Furthermore, a containing groove is formed in one side, away from the piston, of the mounting seat, a convex block is arranged on the outer side of the guide shaft, and the convex block is abutted to the bottom of the containing groove.

Through adopting above-mentioned technical scheme, lug and storage tank bottom butt for difficult guide shaft that drives when the piston slides to the direction of keeping away from the mount pad, improved guide shaft and mount pad fixed connection's stability.

Furthermore, a second ring groove is formed in the projection, and a second sealing ring is arranged in the second ring groove.

Through adopting above-mentioned technical scheme, the setting up of second sealing washer makes the hydraulic oil of cylinder body back chamber difficult to flow out.

Furthermore, one side fixedly connected with cylinder cap that the cylinder body is close to the mount pad, the guiding axle passes out of the mount pad back and cylinder cap butt.

Through adopting above-mentioned technical scheme, guiding axle and cylinder cap butt for when the piston removed to being close to the mount pad direction, the difficult atress of guiding axle was deviate from the cylinder body.

Furthermore, pin holes are coaxially formed in the protruding block, the guide shaft and the cylinder cover, and positioning pins matched with the pin holes are arranged on the cylinder cover.

Through adopting above-mentioned technical scheme, locating pin and pinhole cooperation, lug, guiding axle and cylinder cap are in coaxial state for when the piston rotates, be difficult for driving the guiding axle and rotate, improved the stability that the piston turned to.

Furthermore, one side of the cylinder body, which is far away from the cylinder cover, is fixedly connected with a fixed flange plate, and a first oil inlet/outlet pipeline and a second oil inlet/outlet pipeline which are respectively communicated with the first oil inlet/outlet and the second oil inlet/outlet are arranged on the fixed flange plate.

Through adopting above-mentioned technical scheme, hydraulic oil advances/goes out oil pipe from the second and gets into the cylinder body, and the hydraulic oil of antechamber flows out from the cylinder body in first advancing/going out oil pipe, realizes that the piston does the motion of keeping away from the cylinder body.

Furthermore, the cylinder body and the fixed flange plate are connected and are all provided with a holding tank, all be provided with the third sealing washer in the holding tank.

Through adopting above-mentioned technical scheme, the setting of third sealing washer for the hydraulic oil in cylinder body front chamber is difficult for flowing out.

Further, first annular grooves are formed in the piston and the mounting seat, and first sealing rings are arranged in the first annular grooves.

By adopting the technical scheme, the arrangement of the first sealing ring on the piston enables hydraulic oil between the front cavity and the rear cavity of the cylinder body to be difficult to communicate, and the stability of piston movement is improved; the setting of first sealing washer makes the difficult outflow of hydraulic oil in cylinder body rear chamber on the mount pad.

Compared with the prior art, the utility model has the advantages that:

1. the ball is arranged, so that when the piston slides, the ball rolls in the guide groove, the resistance is small, the ball is not easy to clamp when rolling and sliding along the guide groove, and the purpose that the ball is not easy to damage when sliding is achieved;

2. the cylinder body is difficult for deviating from to the guiding axle for the setting of cylinder cap has improved the stability of corner jar work.

Drawings

Fig. 1 is a partial sectional view of the present invention.

Reference numerals: 100. a cylinder body; 101. a front cavity; 102. a rear cavity; 103. a first inlet/outlet port; 104. a second inlet/outlet port; 200. a piston; 201. a pin; 202. a ball bearing; 203. a through hole; 300. a guide shaft; 301. a guide groove; 302. a helical section; 303. a straight line segment; 400. a mounting seat; 401. a first ring groove; 402. a first seal ring; 500. a cylinder cover; 600. a containing groove; 601. a bump; 602. a second seal ring; 603. a second ring groove; 604. positioning pins; 700. fixing a flange plate; 701. accommodating grooves; 702. a third seal ring; 703. a first oil inlet/outlet pipeline; 704. a second oil inlet/outlet pipeline.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, the corner cylinder includes a cylinder body 100, a piston 200 and a mounting seat 400, the mounting seat 400 is welded at one end of the cylinder body 100, the piston 200 is connected in the cylinder body 100 in a sealing and sliding manner and divides the cylinder body 100 into a front cavity 101 and a rear cavity 102, the front cavity 101 and the rear cavity 102 are respectively provided with a first oil inlet/outlet 103 and a second oil inlet/outlet 104 in a communicating manner, a guide shaft 300 is welded on the mounting seat 400, the piston 200 is connected outside the guide shaft 300 in an axial sliding manner along the guide shaft 300, and the piston 200 and the guide shaft 300 are coaxially arranged. Four guide grooves 301 are formed in the periphery of the guide shaft 300, balls 202 connected with the guide grooves 301 are arranged on the piston 200, four through holes 203 along the radial direction of the piston 200 are formed in the piston 200, and a pin 201 used for limiting the positions of the balls 202 is arranged in each through hole 203.

The hydraulic oil enters the rear cavity 102 through the second oil inlet/outlet 104, the hydraulic oil in the front cavity 101 flows out through the first oil inlet/outlet 103, and the piston 200 slides in the direction far away from the mounting seat 400. Guide shaft 300 and mount pad 400 welding, ball 202 and guide way 301 cooperation under the pin 201 limiting displacement, make piston 200 slide to the direction of keeping away from mount pad 400, guide way 301 includes the straightway 303 at spiral section 302 and spiral section 302 both ends, therefore piston 200 slides to the direction straight line of keeping away from mount pad 400 earlier under the oil pressure effect, then realizes turning to 90 degrees when sliding to the direction of keeping away from mount pad 400. The guide groove 301 is matched with the ball 202, and when the piston 200 slides, the ball 202 rolls in the guide groove 301, so that the piston 200 is not easy to generate a blocking phenomenon when sliding.

First ring grooves 401 are formed in the piston 200 and the mounting seat 400, and first sealing rings 402 are arranged in the first ring grooves 401. The first seal 402 disposed on the first piston 200 makes the hydraulic oil in the front chamber 101 and the hydraulic oil in the rear chamber 102 not easy to flow in series. The first sealing ring 402 arranged on the mounting seat 400 makes the hydraulic oil in the rear cavity 102 not easy to flow out from the joint of the mounting seat 400 and the cylinder body 100.

Storage tank 600 has been seted up to one side that piston 200 was kept away from to mount pad 400, and guide shaft 300 outside integrated into one piece has lug 601, lug 601 and the butt of storage tank 600 tank bottom for difficult drive guide shaft 300 slides when piston 200 slides to the direction of keeping away from mount pad 400 along guide shaft 300, has reduced guide shaft 300 and mount pad 400 welded position's atress simultaneously, thereby has improved piston 200 gliding movement's stability. The bump 601 is provided with a second ring groove 603, a second sealing ring 602 is arranged in the second ring groove 603, and the arrangement of the second sealing ring 602 enables the hydraulic oil of the rear cavity 102 to flow out difficultly.

One side bolt fixedly connected with cylinder cap 500 that cylinder body 100 is close to mount pad 400, guide shaft 300 wear out behind mount pad 400 with cylinder cap 500 butt, seted up on the cylinder cap 500 with guide shaft 300 complex recess, guide shaft 300 pegs graft into behind the recess with the tank bottom butt, be difficult for driving guide shaft 300 when piston 200 slides to the direction that is close to mount pad 400 and slide, and reduced mount pad 400 and guide shaft 300 welded position's atress, improved piston 200 gliding movement's stability.

The convex block 601, the guide shaft 300 and the cylinder cover 500 are coaxially provided with pin holes, and the cylinder cover 500 is provided with a positioning pin 604 matched with the pin holes. After the positioning pin 604 is matched with the pin hole, the positioning pin 604 is bonded with the cylinder cover 500, so that the piston 200 is not easy to drive the guide shaft 300 to rotate when sliding and rotating, and the stability of the sliding motion of the piston 200 is improved.

One side of the cylinder body 100, which is far away from the cylinder cover 500, is fixedly connected with a fixed flange 700 through bolts, the fixed flange 700 is provided with a first oil inlet/outlet pipeline 703 and a second oil inlet/outlet pipeline 704 which are respectively communicated with the first oil inlet/outlet port 103 and the second oil inlet/outlet port 104, accommodating grooves 701 are respectively formed between the cylinder body 100 and the fixed flange 700, third sealing rings 702 are respectively arranged in the accommodating grooves 701, hydraulic oil enters the front cavity 101 from the first oil inlet/outlet pipeline 703 through the first oil inlet/outlet port 103, hydraulic oil in the rear cavity 102 enters the second oil inlet/outlet pipeline 704 through the second oil inlet/outlet port 104, and the piston 200 slides towards the direction close to the mounting seat 400; the third sealing ring 702 arranged in the accommodating groove 701 makes the hydraulic oil in the front cavity 101 not easy to flow out.

The working principle is as follows:

hydraulic oil flows from the second oil inlet/outlet port 104 into the rear chamber 102 through the second oil inlet/outlet pipe 704, hydraulic oil flows from the front chamber 101 back to the first oil inlet/outlet pipe 703 through the first oil inlet/outlet port 103, the pin 201 abuts against the balls 202 to roll the balls 202 in the through holes 203 and the guide grooves 301, and the piston 200 is made to turn while sliding in a direction away from the mount 400.

Hydraulic oil flows from the first oil inlet/outlet port 103 into the front chamber 101 through the first oil inlet/outlet pipe 703, hydraulic oil in the rear chamber 102 flows back to the second oil inlet/outlet pipe 704 through the second oil inlet/outlet port 104, and the piston 200 slides in a direction close to the mount 400.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A corner cylinder comprises a cylinder body (100), a piston (200) and a mounting seat (400), wherein the mounting seat (400) is fixedly connected to one end of the cylinder body (100), the piston (200) is connected in the cylinder body (100) in a sealing and sliding manner and divides the cylinder body (100) into a front cavity (101) and a rear cavity (102), the front cavity (101) and the rear cavity (102) are respectively communicated with a first oil inlet/outlet (103) and a second oil inlet/outlet (104), the corner cylinder is characterized in that the mounting seat (400) is fixedly connected with a guide shaft (300), the piston (200) is connected outside the guide shaft (300) in an axial sliding manner along the guide shaft (300), and the piston (200) and the guide shaft (300) are coaxially arranged; a plurality of guide grooves (301) are formed in the peripheral side of the guide shaft (300), and balls (202) rotatably connected with the guide grooves (301) are arranged on the piston (200).

2. A corner cylinder according to claim 1, wherein the guide groove (301) comprises a helical section (302) and straight sections (303) at both ends of the helical section (302) arranged axially along the guide shaft (300).

3. A corner cylinder according to claim 1, characterized in that the piston (200) is provided with a plurality of radial through holes (203), the balls (202) are partly arranged in the through holes (203) and partly in the guide grooves (301), and the through holes (203) are internally provided with pins (201) for limiting the positions of the balls (202).

4. The corner cylinder according to claim 1, wherein a receiving groove (600) is formed in a side of the mounting seat (400) away from the piston (200), a projection (601) is arranged on an outer side of the guide shaft (300), and the projection (601) abuts against a bottom of the receiving groove (600).

5. The corner cylinder according to claim 4, characterized in that the protrusion (601) is provided with a second ring groove (603), and a second sealing ring (602) is disposed in the second ring groove (603).

6. The corner cylinder according to claim 4, wherein a cylinder cover (500) is fixedly connected to one side of the cylinder body (100) close to the mounting seat (400), and the guide shaft (300) penetrates through the mounting seat (400) and abuts against the cylinder cover (500).

7. The corner cylinder according to claim 6, characterized in that the protrusion (601), the guide shaft (300) and the cylinder cover (500) are coaxially provided with pin holes, and the cylinder cover (500) is provided with a positioning pin (604) matched with the pin holes.

8. The corner cylinder according to claim 6, wherein a fixed flange (700) is fixedly connected to one side of the cylinder body (100) away from the cylinder head (500), and a first oil inlet/outlet pipeline (703) and a second oil inlet/outlet pipeline (704) which are respectively communicated with the first oil inlet/outlet port (103) and the second oil inlet/outlet port (104) are formed in the fixed flange (700).

9. The corner cylinder according to claim 8, wherein the cylinder body (100) and the fixed flange (700) are connected by a receiving groove (701), and a third sealing ring (702) is arranged in the receiving groove (701).

10. The corner cylinder according to claim 1, wherein the piston (200) and the mounting seat (400) are both provided with a first ring groove (401), and a first sealing ring (402) is arranged in the first ring groove (401).