KR200228110Y1 - Air pressure type rotate chuck appurtenance - Google Patents

Abstract

The present invention relates to a pneumatic rotary chuck device, the purpose of which is to provide a brake to detach between the air inlet shaft and the core rotatably installed on the outside, and can be moved radially on the outer peripheral side of the core The air pack is provided to operate the jaw installed to operate the jaw, and the air flow path for operating the brake and the air pack is formed, respectively, to provide a pneumatic rotary chuck device that is easy to come into close contact with the article and slips. Air inlet shaft 10 having two flow passages 20 formed therein, a core 30 installed at an outer side of the air inlet shaft 10 and having a jaw 60 installed on an outer circumferential surface thereof, Is connected to the air pack 40 is provided to move the jaw (60) to the outer circumferential side when inflated, and is connected to the other flow path 20 can be attached and detached between the air inlet shaft (10) and the core (30)The brake 80 is configured to be provided.

Description

Pneumatic rotary chuck device {AIR PRESSURE TYPE ROTATE CHUCK APPURTENANCE}

The present invention relates to a pneumatic rotary chuck device, and more particularly, to be movable in the radial direction on the outer peripheral side of the brake and the core provided to be detachable between the air inlet shaft and the core rotatably installed on the outside thereof. The present invention relates to a pneumatic rotary chuck device each having a flow path of an air pack for operating the jaws.

In general, a pressure chuck device is provided to fix an article using a jaw operated by pressure, and is classified into hydraulic and pneumatic pressure according to the supplied pressure. It is divided into a contraction type installed in the jaw is provided to be in close contact with the outer surface of the article, and an expandable type is inserted into the inside of the article to be provided in close contact with the inner surface of the article.

1 is an exploded perspective view showing such a conventional expandable pneumatic rotary chuck device, Figure 2 is a radial cross-sectional view showing a coupled state. As shown in the drawing, the pneumatic rotary chuck device is formed in a hollow to move the air pressure and is installed to be rotatable, and is installed on the outside of the air inflow shaft 1 and is provided on the outer circumferential side. (4, Jaw) is provided with a core (2, Core) is installed.

First, the air inlet shaft 1 is connected to a compressor not shown in the inside of the hollow to transfer the air pressure generated from the core 2 side, the discharge hole (1a) to discharge the air pressure on the outer peripheral side Several are formed spaced apart in the axial direction.

Next, the hollow core 2 disposed to the outside of the air inlet shaft 1 is provided to receive the air pressure from the air inlet shaft 1, the inner surface is in the axial front and rear outer peripheral surface of the discharge hole (1a) The inner protrusion 2a is provided to be in close contact and to seal the space therebetween.

And between the inner projection (2a) is provided with a cylinder (2b) radially penetrated so as to communicate with the discharge hole (1a) of the air inlet shaft (1), the core (b) outside the cylinder (2b) On the outer circumferential surface of 2) is provided an installation groove 2c recessed into a rectangle.

In addition, 'U'-shaped packing (3, U-packing) is provided on both sides of the inner projection 2a in the axial outer direction to prevent air from flowing between the air inlet shaft 1 and the core 2. This is installed.

On the other hand, the jaw (4) is installed in the installation groove (2c) of the jaw (4) is inserted into the installation groove (2c) to be slidably moved up and down inside the inside of the jaw (4) is disposed outside the core (2) The outer surface is formed with a dense lattice groove to improve the adhesion, the center side is provided with a tap hole (4a) through the tapping process through both sides.

In addition, an operating part 5 is provided inside the jaw 4 so as to move the jaw 4 radially outward. The operating part 5 includes a piston inserted into the cylinder 2b. 5a) and a rectangular elastic plate 5b coupled to the lower part of the piston 5a and disposed between the inner protrusions 2a.

At this time, the tab hole 5c is formed through the inside of the piston 5a, and a bolt (not shown) may be provided between the tap hole 4a of the jaw 4 to connect them.

In addition, a hollow support plate 6 is provided on both sides of the core 2 in the axially outer side, and the support plate 6 protrudes in the axial direction to be inserted into the core 2 to form a step. do.

In addition, a thrust bearing 7 is installed between the supporting plates 6 to reduce the axial frictional force so that the core 2 smoothly rotates outside the air inlet shaft 1.

In the conventional pneumatic rotary chuck device configured as described above, the core 2 is provided outside the air inflow shaft 1, and the support plate 6 and the thrust bearing 7 are provided between the cores 2. .

When the jaw 4 is operated, the air pressure of the compressor is supplied through the air inlet shaft 1, and the air pressure transmitted to the air inlet shaft 1 is discharged to the outside through the discharge hole 1a. The piston 5a provided on the inner side of the core 2 is pushed to the outer circumferential side, which causes the piston 5a to push the jaw 4 out of the installation groove 2c to chuck the article on the outside thereof.

In addition, when the air pressure is continuously supplied, the jaw 4 and the article are kept in close contact, and when the transmission of the air pressure is stopped, the plate-shaped elastic plate 5b provided inside the core 2 provided in a circle is circular. The force for supporting the jaws 4 is removed by moving the piston 5a to the inner circumferential side while restoring to.

As a result, articles such as vinyl and paper are wound on the outer circumferential side of the core 2, which is fixed and rotated to the air inlet shaft 1, via a paper tube. The adjustment adjusts the adhesion between the article and jaws 4 so that they are in close contact or slip.

However, since the conventional pneumatic rotary chuck device has one flow path through which air pressure flows and there is no separate brake slip control device, when the air pressure is increased, the chucking state is good. It is not possible to maintain the necessary slip phenomenon depending on the material and the thickness of the article, and it is possible to maintain the slip state by lowering the air pressure.However, the chucking state may be loosened, which may cause the article to be released from the core. There was no problem.

In addition, when the article is wound tightly, the air pressure is lowered to cause slip between the jaws and the article. At this time, the inner surface of the article is scratched and damaged by the jaws.

In addition, when the article is loosely wound to increase the air pressure to increase the adhesion between the jaw and the article, there was a problem that the inner surface of the article is damaged by the jaw.

On the other hand, in order to prevent such damage, there was an uncomfortable problem of loosening the nut fixed to the air inlet shaft by pressing the core in the axial direction and manually adjusting the winding degree of the article by rotating the core.

In addition, there is a problem in that the manufacture and installation of the piston and the cylinder are inconvenient because they must be precisely processed so that air pressure is not discharged between the piston of the operating unit provided to directly operate the jaw and the cylinder into which the piston is inserted.

In addition, when the piston of the operating unit is moved to the inner circumferential side, the jaws have a problem in that the bearing force is removed to reduce the adhesion to the article, but there is no separate member to return to the original position to rub against the inner surface of the article.

In addition, a separate support plate for installing the thrust bearings is required on both sides of the axial outer circumference of the core, thereby causing a problem in that assemblability is reduced due to an increase in the number of parts.

The present invention is to solve such a conventional problem, the object is to provide a brake to detach between the air inlet shaft and the core rotatably installed on the outside, and radially on the outer peripheral side of the core It is to provide an air pack to operate the jaw installed to be movable, and to form a flow path for operating the brake and the air pack, respectively, to provide a pneumatic rotary chuck device that is easy to close and slip with the article.

1 is a partially exploded perspective view showing a conventional pneumatic rotary chuck device.

Figure 2 is a radial cross-sectional view showing a conventional pneumatic rotary chuck device.

3 is an axial sectional view showing a pneumatic rotary chuck device according to the present invention.

Figure 4 is a radial cross-sectional view showing a pneumatic rotary chuck device according to the present invention.

5 is a perspective view showing a jaw and an air pack according to the present invention.

6 is a perspective view showing a brake according to the present invention.

Explanation of symbols on the main parts of the drawings

10: air inflow shaft 20: euro

21: Inside Euro 25: Outside Euro

30: Core 31: Inlet

32: outside inflow hole 33: mounting groove

34: fixing hole 35: fixing pin

38: protrusion 40: air pack

60: Joo 61: Outsourced home

70: Restoration spring 80: Brake

81: piston 85: lining pad

The present invention for achieving the above object, the air inlet shaft formed with two different passages therein, the core is installed on the outside of the air inlet shaft and the outer jaw is installed in the outer circumferential surface, and is connected to the flow passage of the one side An air pack provided to move the jaw to the outer circumferential side, and the brake is connected to the other side of the flow path to be detachable between the air inlet shaft and the core.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

3 is an axial sectional view showing a pneumatic rotary chuck device according to the present invention. As shown in this, the air inlet shaft 10 and the core 30 provided in a hollow is installed to be coupled.

The air inlet shaft 10 is connected to a compressor (not shown) and transfers the air pressure generated therefrom to the core 30 side. In the present invention, two flow paths 20 are formed inside and outside the air inlet shaft 10. Each of them is formed to control the air pressure introduced by each valve (not shown).

The outer flow passage 25 provided on the outer side is a slender flow path 20 provided inside the outer circumferential side of the air inflow shaft 10, and the outer discharge holes are arranged in the axial direction on the outer surface of the air inflow shaft 10. 26) are spaced apart.

And the inner flow passage 21 is provided on the inside is provided in the interior of the air inlet shaft 10 formed in a hollow, three cylinders 22 on the same circumference so as to be symmetrical to each other on the outer surface of the air inlet shaft 10 Are formed, and several lines are provided in the axial direction.

On the other hand, the core 30 is installed to the outside of the outer discharge hole 26 of the outer passage 25, the inlet is provided in the inner side in a cylindrical shape so as to correspond to the outer discharge hole 26 is always in communication with the outer passage 25 31 is formed, and one inlet hole 32 is formed in the inlet 31.

A packing groove 36 is provided at both sides of the inlet 31 in the axial direction, and a core packing 37 is installed in the inside thereof so as to be in close contact with the outer surface of the air inlet shaft 10.

And the outer circumferential side of the outer inlet hole 32 is provided with an installation groove 33 formed in a circumferential shape along the outer circumferential surface of the core 30. The installation groove 33 is provided in a rectangular cross-section, the outer peripheral side is opened and the inner peripheral side is provided so that the air pressure of the external flow path 25 is communicated with the external inlet hole (32).

In addition, the air pack 40 is provided inside the installation groove 33 to be made of a rubber material so as to expand and contract. The air pack 40 is formed in a circumferential shape so as to be inserted along the installation groove 33, has a shape similar to a tire, the inner surface is installed to be in close contact with the bottom surface of the installation groove (33). The opening is formed to communicate with the external inlet hole (32).

In addition, protrusions 38 are provided at both inner axial sides of the core 30 so that the protrusions 38 are in close contact with each other when the cores 30 are in close contact with each other, and a thrust bearing 50 is installed at the outer circumferential side thereof. The bearing cover 51 is provided on the outer circumferential side of the bearing 50.

4 and 5, the jaw 60 is provided on the outer circumferential side of the air pack 40. The jaw 60 is divided into six pieces and is provided in a ring shape at the time of joining. Each of the jaws 60 is divided into six pieces so as to operate independently when the air pack 40 on the inner circumferential side thereof is inflated.

That is, jaw 60 is provided by combining a plurality of fan-shaped shape in which the center side is cut in a circle, the dense lattice groove is formed on the outer surface disposed to the outside of the core 30 to improve the adhesion.

And, the outer surface of the jaw 60 is formed in the outer circumferential groove 61 of the semi-circular cross-section so as to be connected to each other in the radial direction, the outer circumferential groove 61, the restoring spring to restore it after the operation of the jaw 60 The 70 is installed so as not to protrude to the outer circumferential side of the jaw 60.

In addition, the axial direction both sides of the jaw (60) penetrates it, the inner and outer circumferentially formed moving hole 62 is provided, the corresponding side surfaces of the jaw (60) corresponding to the communication with the intermediate side of the moving hole (62) Two fixing holes 34 are provided so that the fixing holes 35 and the fixing pins 35 are installed inside the moving holes 62 and the fixing holes 34 (see FIG. 3).

That is, when the jaw 60 having the moving hole 62 is moved to the inner and outer circumferential sides, the jaw 60 is moved under the guidance of the fixing pin 35 provided at the inner side of the moving hole 62.

6 is a perspective view showing a brake according to the present invention. As shown therein, the brake 80 is composed of a piston 81 and a lining pad 85, the piston 81 is provided in a cylindrical shape and the circumferential groove 82 is provided on the upper and lower circumference of the piston therein Packing 83 is installed.

And, the lining pad 85 is installed in close contact with one end of the piston packing 83, is formed along the inner circumference so as to be in close contact with the protrusion 38 of the inner surface of the core 30 is coupled to the piston 81 When the 'T' shape is provided, the pad groove 86 is formed at the inner center side for coupling, and the bolt 87 inserted therein is fastened to the piston 81 through the lining pad 85. .

In the brake 80, a piston 81 is inserted into a cylinder 22 that communicates with an internal flow path 21 of the air inflow shaft 10, and a lining pad 85 is disposed toward the core 30 to provide an air inflow shaft. 10 and the core 30 are fixed.

Pneumatic rotary chuck device of the present invention configured as described above, the core 30 is installed on the outside of the air inlet shaft 10, wherein the outer discharge hole 26 and the inlet port of the core 30 of the external flow path 25 It arrange | positions so that 31 may face, and arrange | positions so that the protrusion part 38 between each core 30 and the lining pad 85 of the brake 80 may face.

On the other hand, when operating the jaw 60 is supplied to the air pressure through the external passage 25, the air pressure transmitted through the external passage 25 is the air pack through the inlet 31 and the external inlet hole (32) 40 is introduced into the inside to expand the air pack 40.

In addition, the jaw 60 provided on the outer circumferential side is moved to the outer circumferential side due to the expansion of the air pack 40 to chuck the product on the outer circumferential side, and the jaw 60 is inserted into the moving hole 62 therein. Under the guide of the fixing pin 35 is to be moved radially outward.

In addition, in order to separate the article 60 and the jaw 60, the air pressure supplied to the external flow path 25 is cut off, which causes the restoring spring 70 installed in the outer circumferential groove 61 of the jaw 60 to contract. Will be restored to the inner circumference.

In addition, in order for the core 30 and the air inflow shaft 10 to interlock, the piston 81 installed in the cylinder 22 communicating with the air supply is supplied to the inside of the inner flow passage 21 to move to the outer circumferential side, and the outer circumferential side thereof. A lining pad 85 connected to the protrusion 38 of the core 30. The lining pad 85 is connected between the core 30 and the air inlet shaft 10 when the article is wound tightly on the outside of the core 30. The air pressure of the inner flow passage 21 is lowered so that slip occurs.

As a result, articles such as vinyl and paper are wound on the outer circumferential side of the core 30 which is fixed and rotated to the air inlet shaft 10 through a branch pipe. 80) adjusts the adhesion between the core 30 and the air inlet shaft 10 so that they are in close contact or slip.

As described in detail above, the pneumatic rotary chuck device according to the present invention has an advantage in that it is easy to manufacture and install a structure for operating the jaw because it is provided to operate the jaw with an air pack of a simple structure.

In addition, by providing a restoring spring for the jaw to return to its original position when the force supporting the jaw to the outer circumferential side is removed, the damage of the article caused by the friction between the article and the jaw is prevented, and it is easily installed outside the core of the product. There is an advantage to this.

In addition, there is an advantage in that the structure for installing a thrust bearing is integrally provided with the core on both sides of the axial outer periphery of the core, thereby reducing the number of parts and improving the assemblability.

In addition, the jaw is operated to provide an external flow path for expanding the air pack so as to chuck the goods, and an internal flow path for operating the brake to attach and detach the air inflow shaft and the core, respectively, and at the same time operates separately, thereby maintaining close contact with the goods. The slip is easy to prevent damage to the article has the advantage of improving the reliability of the product.

Claims (7)

An air inlet shaft 10 having two different flow paths 20 formed therein, a core 30 installed outside the air inlet shaft 10 and having a jaw 60 installed on an outer circumferential surface thereof, The air pack 40 and the air inlet shaft 10 and the core 30 are connected to the flow path 20 so as to move the jaw 60 to the outer circumferential side when inflated and connected to the other flow path 20. Pneumatic rotary chuck device characterized in that the brake (80) is provided so as to be removable. According to claim 1, wherein the flow path 20 is formed in the outer circumferential side of the air inflow shaft 10 and the external flow path 25 provided to expand the air pack 40, and the air inflow shaft (10) Pneumatic rotary chuck device is formed on the inner center side of the inner flow path (21) in close contact with the core (30) by moving the brake (80) radially outward. According to claim 2, The air pack 40 is provided in a cylindrical shape with an inner circumference is opened, the recess is formed along the circumference inside the core 30, the bottom surface is installed in communication with the outer flow path 25 The pneumatic rotary chuck device is inserted into the groove (33) to communicate with the external flow path (25). 3. The piston (80) according to claim 2, wherein the brake (80) is inserted into a cylinder (22) formed through the outer circumferential side of the air inlet shaft (10) so as to communicate with the internal passage (21) and the air inlet. Pneumatic rotary chuck device characterized in that it is provided with a lining pad (85) coupled to one end of the piston (81) extending to the outside of the shaft (10) detachable from the core (30). According to claim 3, The jaw (60) is divided into a plurality of wrap around the outer circumferential side of the air pack 40, the side of the jaw (60) is provided with a moving hole 62 is formed in the radial direction elongated Pneumatic type, characterized in that the fixing hole 34 is provided on both sides of the installation groove 33 corresponding to the moving hole 62 so that the fixing pin 35 passing through the moving hole 62 can be fixed. Rotary chuck device. The outer circumferential surface of the jaw (60) is provided with an outer circumferential groove (61) formed along the circumference, and the inner circumferential groove (61) can be restored to the inner circumferential side of the jaw (60). Pneumatic rotary chuck device characterized in that the restoring spring (70) is installed. The protrusion 38 is integrally formed on both axial sides of the core 30 so as to be spaced apart from each other when the plurality of cores 30 are stacked so that the thrust bearing 50 can be installed therebetween. Pneumatic rotary chuck device, characterized in that.