CN104747533A - Double-action air cylinder with external magnet - Google Patents
Double-action air cylinder with external magnet Download PDFInfo
- Publication number
- CN104747533A CN104747533A CN201510147561.9A CN201510147561A CN104747533A CN 104747533 A CN104747533 A CN 104747533A CN 201510147561 A CN201510147561 A CN 201510147561A CN 104747533 A CN104747533 A CN 104747533A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- double
- cylinder barrel
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
Abstract
The invention discloses a double-action air cylinder with an external magnet. The double-action air cylinder with the external magnet comprises a cylinder barrel, a front end cover and a rear end cover at the two ends of the cylinder barrel, a magnetic switch on an outer shell of the cylinder barrel, a piston rod inside the cylinder barrel, and a piston rod at one end of the piston. A metal guide rod parallel with the cylinder barrel is arranged outside the cylinder barrel, the metal guide rod is connected with the front end of the piston rod through a connecting rod, the permanent magnet is arranged on the metal guide rod and is located at the rear end of the magnetic switch, and the horizontal distance between the permanent magnet and the magnetic switch is equal to the stroke of the piston. According to the double-action air cylinder with the external magnet, a built-in magnetic ring is changed into the external magnet, so waste of resources is avoided and the service life of the air cylinder is prolonged; the material and the position of the magnet are reasonably arranged, the air cylinder is accurate in positioning, normal operation of equipment of the air cylinder is guaranteed, and the working efficiency of the equipment is improved.
Description
Technical field
The present invention relates to cylinder technical field, be specifically related to a kind of double-acting cylinder of external magnet.
Background technique
Double-acting cylinder is can the cylinder of bidirectional-movement, and its structure can be divided into double-piston rod-type, single-piston rod formula, double piston type, buffering type and non-buffered formula etc.Double-acting cylinder comprises cylinder barrel, front and back cylinder cap, piston, piston rod, Sealing and fastening piece, and double-acting cylinder is divided into rod chamber and rodless cavity by piston.When pressurized air enters rodless cavity, the power that pressurized air acts on piston will overcome various opposition, promote piston-advance, and rod chamber air is discharged and piston rod is stretched out; Otherwise when pressurized air enters cylinder rod chamber, piston is reversing motion just, and piston rod is return.Cylinder rodless cavity and rod chamber replace air inlet and exhaust, and piston rod is stretched out and returns, cylinder realizes linear reciprocating motion.
At present, in prior art, as shown in Figure 2, the piston both sides in cylinder barrel are all connected with magnet ring to most of common double active cylinder structure, when piston movement is to the position at the magnetic switch place on cylinder barrel shell, magnetic force makes magnetic switch engage, and produces an electrical signal to control system.Cylinder moving is frequent, and cylinder bears pressure generally comparatively greatly, and cylinder barrel is tilted, cause magnet ring easily to wear and tear, thus there is following defect: one, magnet ring weares and teares, between magnet ring and magnetic switch, magnetic force weakens, thus it is inaccurate to cause cylinder to locate, and the normal operation of cylinder group is installed in impact; Its two, magnet ring easily weares and teares, and working life is short, need frequently change, and waste magnet ring resource increases cost of production, and the normal operation of cylinder group is installed in impact simultaneously; In addition, change the built-in magnet ring of cylinder, need cylinder be taken apart, change again frequent, affect the working life of working efficiency and cylinder.
Summary of the invention
For the deficiencies in the prior art, the invention provides and a kind ofly avoid that magnet ring is wasted, the double-acting cylinder of the external magnet of high, the cylinder long service life of working efficiency.
In order to achieve the above object, the technological scheme that the present invention takes is:
Identical with existing magnetic switch double-acting cylinder structure, the double-acting cylinder of this external magnet also comprises cylinder barrel, the forward and backward end cap at cylinder barrel two ends, the magnetic switch on cylinder barrel shell, the piston in cylinder barrel and the piston rod be connected with piston rear end; Difference is the metal guide rod that cylinder barrel is outside equipped with that is parallel to a cylinder barrel, described metal guide rod is connected with piston rod front end by connecting rod, metal guide rod is provided with one block of permanent magnet, described permanent magnet is positioned at the rear end of magnetic switch alive, and permanent magnet is equal with the stroke of piston with the horizontal equivalent of magnetic switch.
As optimal technical scheme, in order to ensure that permanent magnet has enough the suction-combining forces to magnetic switch, be beneficial to the normal operation of the accurate positioning of cylinder, equipment, the perpendicular distance≤5mm of described metal guide rod and magnetic switch.
As optimal technical scheme, in order to ensure the stability of permanent magnet, be beneficial to the accurate location of cylinder, described permanent magnet is alnico magnet.
As optimal technical scheme, in order to connecting rod and piston rod are assembled and convenient disassembly, described connecting rod is connected with piston rod front end by bolt.
As optimal technical scheme, during in order to ensure cylinder operation, the stability of metal guide rod, is beneficial to cylinder and normally runs, described metal guide rod and connecting rod one-body molded.
Compared with prior art, the beneficial effect that the present invention has: change built-in magnet ring into external magnet, avoids the wasting of resources to reduce cost of production, extends the working life of cylinder simultaneously; The material of magnet and position arrange rationally, cylinder accurate positioning, and guarantee equipment normally runs, and improve the working efficiency of equipment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of common double active cylinder in prior art;
Drawing reference numeral: 1, cylinder barrel, 2, front cover, 3, rear end cover, 4, magnetic switch, 5, piston, 6, piston rod, 7, metal guide rod, 8, connecting rod, 9, permanent magnet, 10, magnet ring.
Embodiment
Shown in Fig. 1, a kind of specific embodiment of the present invention is proposed, a kind of double-acting cylinder of external magnet, comprise cylinder barrel 1, the front cover 2 being provided with guide sleeve of cylinder barrel 1 front end, the rear end cover 3 of the installation buffer throttling valve of cylinder barrel 1 rear end, magnetic switch 4 on cylinder barrel 2 shell, piston 5 in cylinder barrel 1 and the piston rod 6 be connected with piston 5 rear end, piston 5 both sides are all connected with the guide ring with cylinder barrel 1 contact internal walls, piston 5 is coated with buffer plunger, described front cover 2 and piston rod 6 contacting point, buffer plunger and cylinder barrel 1 contact internal walls place, buffer plunger and rear end cover 3 contacting point are equipped with seal ring.
Described cylinder barrel 1 is outside equipped with the metal guide rod 7 that is parallel to cylinder barrel 1, metal guide rod 7 can be arranged on the top of magnetic switch 4, also the side of magnetic switch 4 can be arranged on, the present embodiment preferably arranges metal guide rod 7 and magnetic switch 4 perpendicular distances≤5mm, ensures that permanent magnet 9 pairs of magnetic switchs 4 have enough the suction-combining forces.
Described metal guide rod 7 is connected with piston rod 6 front end by connecting rod 8, and this example preferably arranges metal guide rod 7 and connecting rod 8 is one-body molded, ensures the stability of metal guide rod 7 during cylinder operation.
Described metal guide rod 7 is provided with one block of permanent magnet 9, described permanent magnet 9 is positioned at the rear end of magnetic switch 4, and permanent magnet 9 is equal with the stroke of piston 5 with the horizontal equivalent of magnetic switch 4; It is alnico magnets that the present embodiment preferably arranges permanent magnet 9, ensures that permanent magnet 9 has stable performance.
In above technological scheme, connecting rod 8 can be connected with the front end of piston rod 6 by the mode such as riveted joint, welding, rivet welding mixing connection, Bolt Connection, the present embodiment is preferably arranged connecting rod and is connected with piston rod 6 front end by bolt, facilitates connecting rod 8 and piston rod 6 to assemble and dismantle.
When the present invention uses: when rodless cavity passes into pressurized air, piston 5 promotes piston rod 6 and advances, and rod chamber pressurized air is discharged, and metal guide rod 7 and permanent magnet 9 thereof move forward along with piston rod 6; When piston 5 moves to the position at magnetic switch 4 place on cylinder barrel 1 shell, permanent magnet 9 and the magnetic force of magnetic switch 4 make magnetic switch 4 engage, produce an electrical signal to control system, thus rod chamber passes into pressurized air, rodless cavity pressurized air is discharged, piston 5 just reversing motion, piston rod 6 is return, cylinder linear reciprocating motion.
Certainly; just by reference to the accompanying drawings the preferred embodiments of the disclosure is described in detail above; not limit practical range of the present invention with this, all equivalence changes done according to principle of the present invention, structure and structure, all should be covered by protection scope of the present invention.
Claims (5)
1. the double-acting cylinder of an external magnet, comprise cylinder barrel (1), the forward and backward end cap (2,3) at cylinder barrel (1) two ends, magnetic switch (4) on cylinder barrel (1) shell, the piston (5) in cylinder barrel (1) and the piston rod (6) be connected with piston (5) rear end; It is characterized in that: cylinder barrel (1) is outside equipped with the metal guide rod (7) that is parallel to cylinder barrel (1), described metal guide rod (7) is connected with piston rod (6) front end by connecting rod (8), metal guide rod (7) is provided with one piece of permanent magnet (9), described permanent magnet (9) is positioned at the rear end of magnetic switch (4), and permanent magnet (9) is equal with the stroke of piston (5) with the horizontal equivalent of magnetic switch (4).
2. the double-acting cylinder of a kind of external magnet according to claim 1, is characterized in that: the perpendicular distance≤5mm of described metal guide rod (7) and magnetic switch (4).
3. the double-acting cylinder of a kind of external magnet according to claim 1, is characterized in that: described permanent magnet (9) is alnico magnet.
4. the double-acting cylinder of a kind of external magnet according to claim 1, is characterized in that: described connecting rod (8) is connected with piston rod (6) front end by bolt.
5. a kind of double-acting cylinder of external magnet according to Claims 1 to 4 any one, is characterized in that: described metal guide rod (7) and connecting rod (8) one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147561.9A CN104747533A (en) | 2015-03-31 | 2015-03-31 | Double-action air cylinder with external magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147561.9A CN104747533A (en) | 2015-03-31 | 2015-03-31 | Double-action air cylinder with external magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747533A true CN104747533A (en) | 2015-07-01 |
Family
ID=53587668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510147561.9A Pending CN104747533A (en) | 2015-03-31 | 2015-03-31 | Double-action air cylinder with external magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747533A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109214A (en) * | 1996-06-25 | 1998-01-13 | Sankyo Seiki Mfg Co Ltd | Position detecting device for driving cylinder |
| WO2006098063A1 (en) * | 2005-03-14 | 2006-09-21 | Howa Machinery, Ltd. | Magnet-type rodless cylinder |
| CN203161720U (en) * | 2013-03-28 | 2013-08-28 | 武汉钢铁(集团)公司 | Externally-arranged position sensor device of hydraulic oil cylinder |
| CN104088848A (en) * | 2014-07-03 | 2014-10-08 | 福建海源自动化机械股份有限公司 | Anti-rotation servo oil cylinder of external displacement sensor |
| CN204553414U (en) * | 2015-03-31 | 2015-08-12 | 广西裕源药业有限公司 | A kind of double-acting cylinder of external magnet |
-
2015
- 2015-03-31 CN CN201510147561.9A patent/CN104747533A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109214A (en) * | 1996-06-25 | 1998-01-13 | Sankyo Seiki Mfg Co Ltd | Position detecting device for driving cylinder |
| WO2006098063A1 (en) * | 2005-03-14 | 2006-09-21 | Howa Machinery, Ltd. | Magnet-type rodless cylinder |
| CN203161720U (en) * | 2013-03-28 | 2013-08-28 | 武汉钢铁(集团)公司 | Externally-arranged position sensor device of hydraulic oil cylinder |
| CN104088848A (en) * | 2014-07-03 | 2014-10-08 | 福建海源自动化机械股份有限公司 | Anti-rotation servo oil cylinder of external displacement sensor |
| CN204553414U (en) * | 2015-03-31 | 2015-08-12 | 广西裕源药业有限公司 | A kind of double-acting cylinder of external magnet |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |