KR102159962B1 - Hydraulic and pneumatic cylinder - Google Patents

Abstract

According to the present invention, provided is a prefabricated hydraulic and pneumatic cylinder, which has a cylinder body with both sides all opened, and separately assembles the entire component for maintenance, such as separately screw-fastening of a sealing cap for maintaining water tightness in a rear opening part of the cylinder body, and at the same time, separately screw-fastening of a rod cap for maintaining water tightness when a piston rod is moved forward and backward in a front opening part of the cylinder body, and separately screw-fastening of a piston at one end of the piston rod inserted into the cylinder body. In addition, a heat dissipation pin and a groove are formed in the cylinder body to easily perform heat dissipation when a temperature increases due to a reciprocating motion of the piston and the piston rod. Also, a magnetic sensor is mounted on the cylinder body and a magnetic ring is mounted on the piston such that information on the distance and number of times of a reciprocating stroke of the piston can be easily monitored by a sensing operation of the magnetic sensor.

Description

Prefabricated hydraulic and pneumatic cylinder {Hydraulic and pneumatic cylinder}

The present invention relates to a prefabricated pneumatic cylinder, and more particularly, to a prefabricated hydraulic cylinder having a new structure in which various sealing members and caps, including a piston and a piston rod, are detachably assembled in a cylinder body for maintenance.

In general, a hydraulic-pneumatic cylinder is a device that converts compressed air energy into mechanical reciprocating linear motion or uses hydraulic pressure to realize a reciprocating linear motion of large output and thrust, and is mainly used in machine tools or construction machines.

A conventional hydraulic-pneumatic cylinder includes a cylinder body, a piston and a piston rod inserted into the cylinder body for reciprocating motion, and a sealing member mounted on the piston and the piston rod.

However, the conventional hydraulic cylinder has the following problems.

First, as the cylinder body of a hydraulic cylinder is provided in a closed structure closed on one side of a stainless steel material, there is a disadvantage in that the material cost according to the application of the stainless steel material and the processing cost for honing the inside of the cylinder body are largely required.

Second, as the cylinder body of the pneumatic cylinder is manufactured in a closed structure, when the sealing member of the piston existing in the cylinder body is old, there is a disadvantage that maintenance is difficult because the sealing member cannot be replaced.

Third, as the cylinder body of the pneumatic cylinder is applied as a sus material, the weight of the cylinder body is increased, and thus there is a disadvantage of counteracting weight reduction.

Fourth, when the temperature increases due to the reciprocating movement of the piston and the piston rod in the hydraulic cylinder, there is a disadvantage in that the sealing member is easily aged due to thermal deformation because there is no separate heat dissipation means.

Fifth, since information on the number of reciprocating strokes of the piston in the hydraulic cylinder is not known, it is difficult to determine the durability life of the piston.

Registered Patent Publication No. 10-1100910 (2011.12.23)

The present invention was conceived to solve the problems of the prior art as described above, and the cylinder body is provided in an open structure on both sides, and a sealing cap for watertight maintenance is detachably screwed into the rear opening of the cylinder body. At the same time, a rod cap that maintains watertightness when the piston rod moves forward and backward is screwed to the front opening of the cylinder body, and the piston is screwed to detachably to one end of the piston rod inserted into the cylinder body. It is an object of the present invention to provide a prefabricated hydraulic cylinder of a new structure in which the cylinders are detachably assembled for maintenance.

In addition, another object of the present invention is to provide heat dissipation pins and grooves in a cylinder body to facilitate heat dissipation when the temperature increases due to the reciprocating motion of the piston and the piston rod.

In addition, the present invention is another point to enable easy monitoring of information on the reciprocating stroke distance and the number of times of the piston by mounting a magnetic sensor on the cylinder body and mounting a magnetic ring on the piston, by sensing operation of the magnetic sensor. It has a different purpose.

In order to achieve the above object, the present invention is: a first opening portion and a second opening portion are formed on one side and the other side, and a reciprocating path for reciprocating the piston and the piston rod is formed inside between the first opening portion and the second opening portion. A cylinder body formed by extrusion molding using an aluminum material so that heat dissipation fins and heat dissipation grooves are repeatedly formed over the front and rear surfaces, including the upper and lower surfaces; A first female thread formed in an inner diameter of the first opening portion of the cylinder body; A second female thread formed in the inner diameter of the second opening portion of the cylinder body; A rod cap having a structure in which the inner diameter part is formed as a reciprocating hole through which the piston rod reciprocates, and the outer diameter part is provided with a first male thread screwed to the first female thread so as to maintain water tightness; A hermetic sealing cap provided in a structure in which a second male screw thread is formed to be screwed to the second female thread to be watertight to the outer diameter portion; A piston rod having one end inserted into the reciprocating hole of the rod cap so as to be watertight and arranged to be inserted into the reciprocating path of the cylinder body, and having a third male thread formed at the other end for screwing the piston; A piston provided with a structure in which a third female thread is formed in an inner diameter portion to which a third male thread of the piston rod is screwed, and is arranged to be linearly moved along a reciprocating path of the cylinder body; A first hydraulic fluid supply port for supplying fluid to one side of the piston by being processed from a predetermined position on one side of the cylinder body toward the reciprocating path; And a second hydraulic fluid supply port processed from a predetermined position on the other side of the cylinder body toward a reciprocating path to supply fluid to the other side of the piston. It provides a prefabricated pneumatic cylinder, characterized in that configured to include.

In particular, a magnetic sensor mounting groove of a predetermined depth is formed extending along the longitudinal direction on the front and rear surfaces of the cylinder body, and a magnetic sensor that detects the reciprocating stroke distance and number of times of the piston is inserted and mounted in the magnetic sensor mounting groove. do.

Preferably, a first O-ring that is in close contact with the inner diameter of the reciprocating path of the cylinder body and performs a watertight function is mounted on the outer diameter portion of the inner end extending from the first male screw of the rod cap, and the outer position from the inner diameter portion of the rod cap And a dust seal and oil-packing in watertight contact with the outer diameter of the piston rod, respectively, in the inner position.

In addition, the sealing cap is made of a suspension material so as to withstand the internal pressure of the cylinder body, and a second O-ring in watertight contact with the wall surface of the cylinder body is mounted on the rim of the inner surface thereof.

In addition, the piston includes: a piston body having a 3-1 female thread formed in an inner diameter portion so as to be first fastened to a third male thread of the piston rod; A piston cover having a 3-2 female thread formed in the inner diameter portion so as to be fastened to the end of the third male thread protruding first by being fastened to the piston body; It characterized in that it comprises a; magnetic ring is inserted and mounted between the piston body and the piston cover.

Preferably, a third O-ring that is watertightly contacted with the inner diameter of the piston body is mounted at a position inside the third male thread of the piston rod, and watertight with the inner diameter surface of the reciprocating path of the cylinder body is possible at the outer diameter of the piston body. It is characterized in that the piston packing is mounted in close contact.

In addition, assembly holes for assembling the pneumatic cylinder with a machine to be mounted are formed at four corners on both sides of the cylinder body.

Preferably, a QR code for tracking management of hydraulic cylinder products is engraved on a predetermined position on the surface of the cylinder body.

The present invention provides the following effects through the above-described problem solving means.

First, the cylinder body is provided in an open structure on both sides, and a rod cap that maintains watertightness when the piston rod moves forward and backward is removably screwed to the opening on one side of the cylinder body, while maintaining watertightness on the other opening of the cylinder body. By screwing the sealing cap for detachable, it is easy to assemble and separate the entire components of the hydraulic cylinder, so that maintenance can be made easily.

Second, by manufacturing the cylinder body by extruding the cylinder body using an aluminum material, excluding expensive and heavy suspension materials, it is possible to achieve weight reduction and reduce manufacturing man-hours and costs.

Third, heat dissipation can be easily achieved when the temperature increases due to the reciprocating motion of the piston and piston rod by forming a heat dissipation pin and groove in the cylinder body. Accordingly, the heat of the sealing member mounted on the piston and piston rod, etc. Durability can be increased by preventing deformation.

Fourth, when the piston reciprocates in the hydraulic cylinder body, information on the reciprocating stroke distance and the number of times of the piston can be easily monitored using a magnetic sensor and a magnetic ring, so that the durability life of the piston can be easily grasped. have.

Fifth, by engraving a QR code on the surface of the cylinder body, the tracking management and product maintenance management information for the corresponding hydraulic cylinder product can be known, thereby providing convenience of management of the hydraulic cylinder product.

1 is an exploded perspective view showing an assembled hydraulic cylinder according to the present invention,
2 and 3 are an assembled perspective view showing an assembled hydraulic cylinder according to the present invention,
Figures 4a and 4b is an assembly cross-sectional view showing a prefabricated hydraulic cylinder according to the present invention,
5 is an assembly cross-sectional view showing a state in which a magnetic ring is sensed by a magnetic sensor when a piston of an assembled hydraulic cylinder according to the present invention is reciprocated to detect a stroke distance and number of strokes of the piston;
Figure 6 is an assembly cross-sectional view showing an embodiment in which the sealing cap of the prefabricated hydraulic cylinder according to the present invention is fixed by welding.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Among the terms used in the present invention, watertight is to be understood as including airtightness.

1 is an exploded perspective view showing a prefabricated pneumatic cylinder according to the present invention, FIGS. 2 and 3 are an assembled perspective view showing a prefabricated pneumatic cylinder according to the present invention, and FIGS. 4A and 4B are prefabricated according to the present invention. As an assembled cross-sectional view showing a hydraulic cylinder, reference numeral 100 in each drawing indicates a cylinder body.

In the present invention, the cylinder body 100 is manufactured in a structure in which both sides are open, but through the first opening portion 101 which is one opening portion of the cylinder body 100, a rod cap that maintains watertightness when the piston rod moves forward and backward ( 120) is screwed detachably, and a sealing cap 130 for maintaining watertight is removably screwed to the second opening of the cylinder body 100, and a piston installed in the cylinder body 100 to be reciprocally installed The main point is that by screwing the piston 150 to the rod 140, it is easy to assemble and disassemble the entire components of the hydraulic cylinder so that maintenance can be easily performed.

To this end, the cylinder body 100 is manufactured in the shape of a rectangular block with an empty inside by extruding the cylinder body 100 using an aluminum material by breaking away from the existing suspension material.

More specifically, the cylinder body 100 is extrusion-molded using an aluminum material, whereby a first opening 101 and a second opening 102 are formed on one side and the other side, and the first opening 102 ) And the reciprocating path 103 for reciprocating the piston and the piston rod is formed in the interior between the second opening 102 and the heat dissipation fin 104 and the heat dissipation groove over the front and rear surfaces including the upper and lower surfaces. (105) is manufactured in a structure that is repeatedly formed.

In addition, a first female thread 101-1 for screwing the rod cap 120 is formed in the inner diameter of the first opening 101 of the cylinder body 100, and In the inner diameter of the two opening portions 102, a second female thread 102-1 for screwing the sealing cap 130 is formed.

In addition, a first for supplying and discharging a fluid toward one side of the piston 150 as processed toward the reciprocating path 103 therein at a predetermined position on one side of the upper surface of the extrusion-molded cylinder body 100 as described above. A fluid supply port 106 for hydraulic pressure is formed and processed from a predetermined position on the other side of the cylinder body 100 toward the reciprocating path 103, and supplies and discharges the fluid toward the other side of the piston 150 A second hydraulic fluid supply port 107 is formed for.

In addition, an assembly hole 109 for assembling a mechanical device to which the hydraulic cylinder product of the present invention is mounted is formed through the cylinder body 100 at the four corner positions.

Here, the rod cap 120 and the sealing cap 130 are respectively removably screwed to the first opening portion 101 and the second opening portion 102 of the cylinder body 100 manufactured as described above, and the cylinder The piston rod 140 and the piston 150 contained in the reciprocating path 103 of the body 100 may also be screwed to be detachable.

The sealing cap 130 is provided to prevent leakage of hydraulic oil, etc. and to withstand the internal pressure in the cylinder body, and has a structure that can be removably screwed to the first opening 101 of the cylinder body 100 It is equipped.

To this end, the sealing cap 130 is a second male screw that is screwed to the second female thread 102-1 formed in the second opening portion 102 of the cylinder body 100 at its outer diameter so as to maintain watertightness. It is provided in a structure in which the mountain 131 is formed.

Preferably, the sealing cap 130 is made of a sus material to withstand the internal pressure of the cylinder body 100, and a second O-ring contacting the wall surface of the cylinder body 100 watertightly at the rim of the inner surface thereof. 132 is fitted.

Therefore, the second male thread 131 of the sealing cap 130 is screwed into the second female thread 102-1 formed in the second opening portion 102 of the cylinder body 100, but the sealing cap ( 130) By screwing with a fastening strength capable of withstanding the internal pressure in the cylinder body 100, the sealing cap 130 can be firmly fixedly mounted to the second opening portion 102 of the cylinder body 100. In addition, leakage of hydraulic oil or pneumatic pressure may be prevented by the second O-ring 132 in watertight contact with the wall surface of the cylinder body 100.

In this case, when the internal pressure in the cylinder body 100 is very large, as shown in FIG. 6, the outer surface of the sealing cap 130 and the outer surface of the cylinder body 100 are welded through welding. It is preferable to increase the fastening strength of the sealing cap 130 by forming the welding part 170.

The rod cap 120 is also provided to prevent leakage of hydraulic oil and withstand the internal pressure in the cylinder body, and has a structure that can be removably screwed to the first opening portion 102 of the cylinder body 100 It is equipped.

To this end, the rod cap 120 is formed with a reciprocating hole 125 through which a piston rod reciprocates in its inner diameter, and a first arm formed in the first opening 101 of the cylinder body 100 in the outer diameter part. It is provided in a structure in which a first male thread 121 that is screwed to the thread 101-1 to be watertight is formed.

Preferably, the outer diameter portion of the inner end extending from the first male thread 121 of the rod cap 120 is in close contact with the inner diameter of the reciprocating path 103 of the cylinder body 100 to perform a watertight function. (122) is mounted, and in the outer and inner positions of the inner diameter of the rod cap 120, the dust seal 123 and the oil-packing 124 in watertight contact with the outer diameter of the piston rod 140, respectively Is fitted.

Accordingly, the first male thread 121 of the rod cap 120 is screwed into the first female thread 101-1 formed in the first opening 101 of the cylinder body 100, but the rod cap ( 120) By screwing with a fastening strength capable of withstanding the internal pressure in the cylinder body 100, the rod cap 120 can be rigidly fixedly mounted to the first opening portion 102 of the cylinder body 100. In addition, leakage of hydraulic oil or pneumatic pressure can be prevented by the first O-ring 122 in watertight contact with the inner diameter of the reciprocating path 103 of the cylinder body 100.

In addition, since the dust seal 123 of the rod cap 120 and the oil-packing 124 are in watertight contact with the outer diameter of the piston rod 140, the dust seal 123 and the oil-packing 124 In the reciprocating motion of the piston rod 140 is guided, but the dust seal 123 blocks the penetration of foreign substances and at the same time serves to prevent leakage of hydraulic oil or pneumatic pressure from the oil-packing 124.

The piston rod 140 is inserted into the reciprocating hole 125 of the rod cap 120 so as to be watertight by the U-packing 124 and is inserted and arranged in the reciprocating path 103 of the cylinder body 100. Bar, the other end is provided with a structure in which a third male thread 141 for screwing with the piston 150 is formed.

The piston 150 is provided in a structure in which a third male thread 141 of the piston rod 140 is screwed into an inner diameter portion thereof, and is formed along the reciprocating path 103 of the cylinder body 100. Arranged to enable linear motion.

Preferably, the piston 150 is a hollow piston body that is sequentially screwed to the third male thread 141 of the piston rod 140 for fastening and fixing of the magnetic ring 155 and separation during maintenance. It consists of 152 and a piston cover 154.

To this end, the piston body 152 is provided in a structure in which a 3-1 female thread 151 is formed in an inner diameter portion so as to be first fastened to the third male thread 141 of the piston rod 140, and the piston cover ( 154 is provided with a structure in which a 3-2 female thread 153 is formed in the inner diameter portion so as to be fastened to the end of the third male thread 141 which is first fastened to the piston body 152 and protruded later.

Therefore, by first fastening the third male thread 141 of the piston rod 140 into the 3-1 female thread 151 of the piston body 152, the end of the third male thread 141 is a second male thread After making the mountain 141 protrude through the piston body 152, the end of the third male thread 141 of the piston rod 140 with the magnetic ring 155 interposed therebetween is the third end of the piston cover 154. -By making it fasten with the 2 female thread 153, the piston body 152 and the piston cover 154 are sequentially screwed to the third male thread 141 of the piston rod 140, and at the same time, the piston body The magnetic ring 155 between the 152 and the piston cover 154 is fastened and fixed.

At this time, a third O-ring 142 in watertight contact with the inner diameter of the piston body 152 is mounted at an inner position of the third male thread 141 of the piston rod 140, and the piston body 152 A piston packing 156 that is in close contact with the inner diameter surface of the reciprocating path 103 of the cylinder body 100 is mounted on the outer diameter portion of the cylinder body 100.

Thus, the third O-ring 142 and the piston packing 156 are on one side of the piston 150 (the inner side of the piston body 152 or the other side of the piston 150 (the outer side of the piston cover 154)). As a result, the hydraulic oil or pneumatic crosses and the watertight and airtight functions are easily performed to block leakage.

During the operation of the pneumatic cylinder of the present invention having such a configuration, that is, during the reciprocating movement of the piston rod 140 and the piston 150 in the cylinder body 100, heat is generated, and the sealing member mounted on the piston and the piston rod, etc. Thermal deformation such as, etc. may be caused, but since heat may be radiated to the outside through the heat dissipation fin 104 and the heat dissipation groove 105 in the cylinder body 100, sealing mounted on the piston and piston rod, etc. It is possible to increase durability by preventing thermal deformation of the member.

According to the present invention, a magnetic sensor mounting groove 108 having a predetermined depth during extrusion is formed extending along the longitudinal direction on the front and rear surfaces of the cylinder body 100, and the magnetic sensor mounting groove 108 includes a piston ( A magnetic sensor 160 for sensing the distance and number of reciprocating strokes of 150) is inserted and mounted.

In addition, the magnetic sensor 160 is connected to a controller (not shown) to transmit signals.

Accordingly, as shown in FIG. 5, a magnetic ring 155 mounted between the piston body 152 and the piston cover 154 among the configurations of the piston 150 when the piston 150 moves forward is a magnetic sensor ( When advancing to the position at 160), the magnetic sensor 160 detects the stroke distance of the piston 150.

Subsequently, when the magnetic sensor 160 transmits a signal that detects the stroke distance of the piston 150 to the controller, if the stroke distance of the piston matches the reference stroke distance in the controller, the stroke is accurately achieved during the reciprocation of the piston. By displaying the presence on the display, the administrator can easily monitor the stroke condition according to the reciprocating motion of the piston.

In addition, when the controller receives a signal that detects the stroke distance of the piston 150 from the magnetic sensor 160, the received signal is counted and the number of reciprocating strokes of the piston is displayed on the display. Not only can the number of locks be easily monitored, but it is also possible to easily check whether the number of reciprocating strokes of the piston is greater than or equal to the reference number that can deteriorate durability.

If, as a result of monitoring the number of reciprocating strokes of the piston, the manager determines that the number of reciprocating strokes of the piston is greater than the reference number that can reduce the durability, it is determined that the endurance life of the piston has ended, and the cylinder body 100 It is possible to perform maintenance work in which the piston rod 140 and the piston 150 are separated and replaced with a new one.

On the other hand, the QR code 110 for tracking management of the hydraulic cylinder product is engraved at a predetermined position on the surface of the cylinder body 100, so that any worker at the place where the hydraulic cylinder product of the present invention is installed recognizes the QR code 110 You can easily check not only the product history but also the maintenance history and maintenance history by using the recognizer.

As seen above, the cylinder body 100 is provided in an open structure on both sides, and the first opening 101 on one side of the cylinder body 100 maintains water tightness and internal pressure when the piston rod 140 moves forward and backward. The hydraulic cylinder by screwing the rod cap 120 for holding to be detachably screwed and at the same time screwing the sealing cap for maintaining watertightness and internal pressure to the other second opening part 102 of the cylinder body 100 to be detachable. It is easy to assemble and disassemble the entire components, so maintenance can be made easily.

In particular, by manufacturing the cylinder body 100 by extruding the cylinder body 100 by excluding expensive and heavy suspension materials and using aluminum materials, it is possible to achieve weight reduction and reduce manufacturing man-hours and costs.

On the other hand, on the outer surface of the cylinder body 100 and the magnetic sensor 160, a contamination prevention coating layer made of a contamination prevention coating composition may be applied to effectively achieve adhesion prevention and removal of contaminants.

The anti-fouling coating composition contains mercaptobenzothiazole and amidoalkyl betaine in a molar ratio of 1:0.01 to 1:2, and the total content of mercaptobenzothiazole and amidoalkyl betaine is 1 with respect to the total aqueous solution. ~10% by weight.

The mercaptobenzothiazole and amidoalkyl betaine are preferably 1:0.01 to 1:2 as a molar ratio, and when the molar ratio is out of the above range, the coating properties of the cylinder body 100 and the magnetic sensor 160 are deteriorated or There is a problem in that the coating film is removed due to increased moisture absorption on the surface after application.

The mercaptobenzothiazole and amidoalkyl betaine are preferably 1 to 10% by weight in the total composition aqueous solution, and if it is less than 1% by weight, there is a problem that the coating properties of the cylinder body 100 and the magnetic sensor 160 are deteriorated. If it exceeds 10% by weight, crystal precipitation is likely to occur due to an increase in the coating film thickness.

On the other hand, as a method of applying the present antifouling coating composition on the cylinder body 100 and the magnetic sensor 160, it is preferable to apply it by a spray method. In addition, the thickness of the final coating film on the cylinder body 100 and the magnetic sensor 160 is preferably 550 to 2000Å, more preferably 1100 to 1900Å. If the thickness of the coating film is less than 550 Å, there is a problem of deterioration in the case of high temperature heat treatment, and if it exceeds 2000 Å, crystal precipitation on the coated surface is liable to occur.

In addition, the present antifouling coating composition may be prepared by adding 0.1 mol of mercaptobenzothiazole and 0.05 mol of amidoalkyl betaine to 1000 ml of distilled water, followed by stirring.

In addition, the first O-ring 122, the second O-ring 132, and the third oil 142 may be made of a rubber material, and the first O-ring 122, the second O-ring 132, and the third oil 142 The raw material content ratio of) is 60% by weight of rubber, 5% by weight of resorcinol resin, 4% by weight of hexamethoxymethyl delamine, 21% by weight of carbon black, 6% by weight of antioxidant, and 4% by weight of sulfur as an accelerator. Mix.

Carbon black is to increase abrasion resistance, so it is added, but if the content is less than 21% by weight, elasticity and abrasion resistance decrease, and if it exceeds 21% by weight, the content of rubber, which is the main component, is relatively small, so the elasticity may decrease. And 21% by weight are mixed.

Antioxidant is 3C (N-PHENYL-N'-ISOPROPYL- P-PHENYLENEDIAMINE) or RD (POLYMERIZED 2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE) to add 6% by weight, 6% by weight If the amount is less than 6% by weight, the product is easily oxidized, and if too much is added and exceeds 6% by weight, the content of the rubber, which is the main component, is relatively small, and the elasticity may be lowered. Is appropriate.

Sulfur, which is an accelerator, is mixed in 4% by weight. If it is less than 4% by weight, 4% by weight is added since the vulcanization effect in the heating process during molding is insignificant. If it exceeds 4% by weight, since the content of the rubber as the main component is relatively small, the elasticity may be lowered, so 4% by weight is appropriate.

Therefore, since the present invention is reinforced with synthetic rubber having elasticity in several directions, the elasticity, toughness and rigidity of the first O-ring 122, the second O-ring 132, and the third oil 142 are increased, thereby improving durability. Accordingly, the life of the first O-ring 122, the second O-ring 132, and the third oil 142 is increased.

In addition, a mounting enhancer may be applied between the magnetic sensor 160 and the magnetic sensor mounting groove 108 to improve mountability of the magnetic sensor 160.

This mounting enhancer includes 53 parts by weight of water, 15 parts by weight of ethyl acrylate, 20 parts by weight of butyl acrylate, 3 parts by weight of toyltriazole, 5 parts by weight of surfactant, 1 part by weight of additive, and ammonium persulfate. It comprises 2 parts by weight and 1 part by weight of a buffer.

The reason for the constituent components and numerical limitations as described above is that, as a result of several tests by the present inventors, remarkable effects were exhibited under the above conditions.

In addition, a heat dissipation coating agent composed of an infrared radiator powder and a binder may be coated around the heat dissipating fin 104.

Infrared emitter powder is jade, sercite, cordierite, germanium, iron oxide, mica, manganese dioxide, silicon carbide, macsumstone, carbon, copper oxide, cobalt oxide, nickel oxide, antimony pentoxide, tin oxide, chromium oxide, boron nitride, nitride Any one of aluminum and silicon nitride, or a mixture of two or more thereof.

The binder is formed of an organic-inorganic hybrid binder. This organic-inorganic hybrid binder is formed by mixing 0.1 to 150 parts by weight of silane or 0.1 to 150 parts by weight of an organic resin with respect to 100 parts by weight of colloidal inorganic particles.

As the colloidal inorganic particles, any one of silica, alumina, magnesium oxide, titania, zirconia, tin oxide, zinc oxide, barium titanate, zirconium titanate and strontium titanate, or a mixture thereof is used.

A primer treatment is performed between the heat dissipating fins 104 and the heat dissipating coating agent. The primer treatment is performed using any one of a silane, an organic resin, a silicone compound, an inorganic binder, an organic/inorganic hybrid binder, and a glass frit.

A protective layer is further formed on the surface of the heat dissipating coating. This protective layer is made of any one of a silane, an organic resin, a silicone compound, an inorganic binder, an organic/inorganic hybrid binder, and a glass frit.

In the present invention, the heat dissipating fins 104 are coated with a high emissivity heat dissipating coating agent having a high emissivity on the surface of the heat dissipating fins 104 so that heat is easily discharged from the surface of the heat dissipating fins 104.

The heat dissipation coating agent is composed of infrared emitter powder and a binder, and is coated on the surface of the heat dissipating fin 104, and the infrared emitter powder is jade, sercite, cordierite, germanium, iron oxide, mica, manganese dioxide, silicon carbide, macsumstone, carbon , Copper oxide, cobalt oxide, nickel oxide, antimony pentoxide, tin oxide, chromium oxide, boron nitride, aluminum nitride, and silicon nitride, or a mixture of two or more thereof.

And, as the binder, any one of a silane binder, an organic binder, a silicone compound binder, an inorganic binder, an organic-inorganic hybrid binder, and a glass frit is used.

In addition, a primer treatment is performed between the surface of the heat dissipating fin 104 and the heat dissipating coating agent to improve adhesion of the heat dissipating coating agent. As a primer, a silane, an organic resin, a silicone compound, an inorganic binder, an organic/inorganic hybrid binder, and a glass frit are used.

In addition, a protective layer is further formed on the surface of the heat-dissipating coating agent to protect the heat-dissipating coating agent and smooth the surface. This protective layer is made of any one of silane, organic resin, silicone compound, inorganic binder, organic-inorganic hybrid binder, and glass frit.

In the present invention, the heat dissipation fin 104 is coated with a heat dissipating coating agent having a high emissivity to increase the emissivity of the heat dissipating fin 104 so that heat is also convection on the surface of the heat dissipating fin 104 and radiation. It is possible to increase heat dissipation efficiency by making it well discharged.

100: cylinder body 101: first opening
101-1: 1st female thread 102: 2nd open part
102-1: second female thread 103: reciprocating path
104: heat dissipation pin 105: heat dissipation groove
106: first hydraulic-pneumatic fluid supply port 107: second hydraulic-pneumatic fluid supply port
108: magnetic sensor mounting groove 109: assembly hole
110: QR code 120: load cap
121: first male thread 122: first O-ring
123: dust seal 124: U-packing
125: reciprocating hole 130: sealing cap
131: second male thread 132: second O-ring
140: piston rod 141: third male thread
142: third O-ring 150: piston
151: 3-1 female thread 152: piston body
153: 3-2 female thread 154: piston cover
155: magnetic ring 156: piston packing
160: magnetic sensor 170: welding part

Claims (4)

A first opening portion 101 and a second opening portion 102 are formed on one side and the other side, and a reciprocation for reciprocating the piston and the piston rod inside the first opening portion 102 and the second opening portion 102 The path 103 is formed, and the cylinder body 100 manufactured by extrusion molding using an aluminum material so that the heat dissipation fins 104 and the heat dissipation grooves 105 are repeatedly formed over the front and rear surfaces including the upper and lower surfaces. );
A first female thread 101-1 formed in the inner diameter of the first opening 101 of the cylinder body 100;
A second female thread (102-1) formed in the inner diameter of the second opening portion (102) of the cylinder body (100);
The inner diameter portion is formed by a reciprocating hole 125 through which the piston rod reciprocates, and the outer diameter portion is provided with a first male thread 121 that is screwed to the first female thread 101-1 to maintain water tightness. A load cap 120;
A hermetically sealed cap 130 provided in a structure in which a second male thread 131 is screwed to the second female thread 102-1 to be watertight on the outer diameter portion;
One end is inserted into the reciprocating hole 125 of the rod cap 120 to be watertight and arranged to be inserted into the reciprocating path of the cylinder body 100, and the other end is a third male thread 141 for screwing the piston. ) The piston rod 140 is formed;
The piston is provided in a structure in which a female thread is formed to which the third male thread 141 of the piston rod 140 is screwed into the inner diameter portion, and is arranged to be linearly moved along the reciprocating path 103 of the cylinder body 100 (150);
A first hydraulic fluid supply port 106 for supplying fluid to one side of the piston 150 by being machined from a predetermined position on the upper surface of the cylinder body 100 toward the reciprocating path; And
And a second hydraulic fluid supply port 107 which is processed from the upper surface of the cylinder body 100 toward the reciprocating path from a predetermined position on the other side to supply the fluid toward the other side of the piston 150;
A magnetic sensor mounting groove 108 having a predetermined depth is extended along the longitudinal direction on the front and rear surfaces of the cylinder body 100, and a magnetic sensor mounting groove 108 is provided with a magnetic sensor for detecting the reciprocating stroke distance and number of times of the piston. The sensor 160 is inserted and mounted;
A first O-ring 122 is in close contact with the inner diameter of the reciprocating path 103 of the cylinder body 100 to perform a watertight function on the outer diameter of the inner end extending from the first male thread 121 of the rod cap 120 It is mounted, the dust seal 123 and the oil-packing 124 in watertight contact with the outer diameter of the piston rod 140, respectively, are mounted at the outer and inner positions of the inner diameter portion of the rod cap 120; The sealing cap 130 is made of a suspension material so as to withstand the internal pressure of the cylinder body 100, and a second O-ring 132 in watertight contact with the wall surface of the cylinder body 100 is formed at the rim of the inner surface thereof. Mounted;
The piston 150 is:
A piston body 152 having a 3-1 female thread 151 formed in the inner diameter portion so as to be first fastened to the third male thread 141 of the piston rod 140; A piston cover 154 having a 3-2 female thread 153 formed on the inner diameter portion so as to be fastened to the end of the third male thread 141 which is first fastened to the piston body 152 and protruded; And a magnetic ring 155 that is inserted and mounted between the piston body 152 and the piston cover 154; A third O-ring 142 in watertight contact with the inner diameter of the piston body 152 is mounted at an inner position of the third male thread 141 of the piston rod 140, and the outer diameter of the piston body 152 A piston packing 156 that is in watertight contact with the inner diameter surface of the reciprocating path 103 of the cylinder body 100 is mounted thereon;
Assembly holes 109 for assembling the pneumatic cylinder with the mounting target machine are formed at the corners of both sides of the cylinder body 100; A prefabricated hydraulic cylinder, characterized in that a QR code (110) for tracking management of the hydraulic cylinder product is engraved on a predetermined surface of the cylinder body (100).
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