KR102436298B1 - Workpiece parts catcher - Google Patents

Abstract

The present invention is a head part which is installed detachably by a chuck; a discharge part installed vertically below the head part; And one side is adjacent to the head portion and the other side is adjacent to the discharge unit, but forming an inclination in the vertical direction to the bed to form a transfer unit for transferring the work to the discharge unit; Containing, when the workpiece moves along the transfer unit , It relates to a workpiece recovery device, characterized in that the air is injected to the contact surface of the workpiece and the transfer unit.

Description

Workpiece parts catcher

The present invention relates to a workpiece recovery device, and more particularly, to a workpiece recovery device capable of improving the discharging ability of the workpiece by reducing the frictional force applied to the workpiece through air injected from a plurality of holes formed in the transfer unit. .

In general, a machine tool refers to a machine used for the purpose of machining a metal/non-metal workpiece into a desired shape and size using an appropriate tool by various cutting or non-cutting methods.

Various types of machine tools, including turning centers, vertical/horizontal machining centers, door machining centers, Swiss turns, electric discharge machines, horizontal NC boring machines, CNC lathes, multi-task machines, etc. is being used

Among machine tools, multi-tasking machine means a turning center equipped with a multi-function automatic tool changer (ATC) and tool magazine that performs various machining types such as turning, drilling, tapping, and milling. In the multi-tasking machine, the operator loads the tool required for machining or manually loads the tool into the tool magazine when exchanging it.

In general, various types of machine tools currently used have an operation panel to which numerical control (NC) or computerized numerical control (CNC) technology is applied. Such an operation panel is provided with various function switches or buttons and a monitor.

In addition, the machine tool includes a table on which a workpiece material is seated and transferred for processing the workpiece, a pallet for preparing the workpiece before processing, a spindle that rotates with a tool or workpiece combined, a tailstock for supporting the workpiece, etc. during processing, a vibration isolator etc. are provided.

In general, in a machine tool, a table, a tool rest, a main shaft, a tailstock, a vibration isolator, etc. are provided with a conveying unit conveying along a conveying axis in order to perform various machining.

In addition, in general, a machine tool uses a plurality of tools for various processing, and a tool magazine or a turret is used as a tool storage place for storing and storing a plurality of tools.

Such a machine tool uses a plurality of tools for various processing, and a tool magazine is used in the form of a tool storage place storing a plurality of tools.

In addition, in general, a machine tool is provided with an automatic tool changer (ATC, Automatic Tool Changer) for withdrawing or receiving a specific tool from the tool magazine by the command of the numerical control unit in order to improve the productivity of the machine tool.

In addition, in general, a machine tool is provided with an automatic pallet changer (APC, Automatic Pallet Changer) in order to minimize the non-working time. The automatic pallet changer (APC) automatically exchanges pallets between the workpiece machining area and the workpiece installation area. Pallets may be loaded with workpieces.

In addition, in general, a machine tool is provided with a workpiece recovery device for automatically recovering the finished workpiece. Such a workpiece recovery device is commonly called a parts catcher (Parts catcher). Since the workpiece recovery device is not a device directly involved in the machining operation, which is the main purpose of the machine tool, the installation space allocated to the workpiece recovery device is limited.

There are several types of the workpiece recovery device, but there are typically a pocket method and a sliding method.

Figure 1 shows a conventional bucket-type workpiece recovery device, Figure 2 shows a conventional sliding-type workpiece recovery device.

A bucket-type workpiece recovery device will be described with reference to FIG. 1 . In the bucket-type workpiece recovery device, a workpiece detachable from the head 1 is dropped by a chuck, and the bucket 4 collects it. The bucket 4 is connected to the central axis 3 through an arm 5 , and is rotatable based on the central axis 3 . The orbiting arm 5 and the bucket 4 are adjacent to the discharge device 2 , and convey the workpiece to the discharge device 2 .

This bucket-type workpiece recovery device has an advantage in that the collection and discharge positions of the workpieces are clear, and even light materials can be easily discharged. However, when the weight of the workpiece is heavy, there is a problem that the discharge position is shifted due to the sagging phenomenon, and there is a risk of damage to the arm 5 due to the characteristics of the joint structure. In addition, there is a problem that a large amount of installation space must be allocated to secure a turning radius.

A sliding type workpiece recovery device will be described with reference to FIG. 2 . The sliding-type workpiece recovery device is provided with a pivotable plate 6 based on a central axis 3, and the plate 6 forms an inclination while having a predetermined angle with respect to the bed. At this time, one side of the plate 6 is adjacent to the head 1 , and the other side is adjacent to the discharge device 2 , and the workpiece falling on one side slides due to the inclination and is transferred to the discharge device 2 .

This sliding-type workpiece recovery device can transport various types of materials due to the plate structure with a wide bottom surface, and has excellent durability because it is not an arm type. In addition, unlike the bucket method, since the turning radius may be short, there is an advantage that it is not necessary to allocate a lot of installation space. Accordingly, in recent years, a sliding type of workpiece recovery device rather than a bucket type has been widely used.

However, in the case of a sliding-type workpiece recovery device, when the inclination angle of the plate 6 is low, when the friction area of the workpiece is large, or when the weight of the workpiece is light, the ejection ability, the most basic function of the workpiece recovery device, is not smooth and the workpiece There is a problem that stays on the plate (6) of the. The closer the inclination is to 90 degrees, the better, but there is a problem in that it is difficult to apply because there is a limit on the space that can be installed.

Accordingly, there is a need for an invention capable of improving the discharge capability of the sliding-type workpiece recovery device that is constrained by the shape, weight, and inclination angle of the workpiece.

Republic of Korea Patent Publication No. 10-0149784 Republic of Korea Patent Publication No. 10-1555066

The present invention is to solve the above problems, and an object of the present invention is to form an air layer on the upper surface of the transfer unit through air injected from a plurality of holes formed in the transfer unit to reduce the frictional force applied from the transfer unit to the workpiece. To provide a workpiece recovery device.

In addition, by setting the angle of the first plate and the tapered surface of the hole formed in the first plate to an acute angle, the thickness of the air layer formed on the upper surface of the first plate is increased to increase the frictional force reduction effect. .

In addition, the plurality of holes formed in the transfer unit are separated into a first hole group and a second hole group so that the first hole group and the second hole group are not arranged on a parallel line, thereby increasing the overlapping range of the air layer. to provide the device.

In addition, it is to provide a workpiece recovery device capable of improving the discharge capability of the workpiece by forming an auxiliary hole to spray air in the sliding direction of the workpiece.

Another object of the present invention is to provide a workpiece recovery device capable of increasing the frictional force reduction effect by forming a flow path for guiding air injection through a groove connecting a plurality of holes to increase the thickness of the air layer formed on the upper surface of the first plate.

In order to achieve the object of the present invention, the workpiece recovery apparatus according to the present invention includes: a head part in which a workpiece is detachably installed by a chuck; a discharge part installed vertically below the head part; And one side is adjacent to the head portion and the other side is adjacent to the discharge unit, but forming an inclination in the vertical direction to the bed to form a transfer unit for transferring the work to the discharge unit; Containing, when the workpiece moves along the transfer unit , characterized in that air is injected to the contact surface of the workpiece and the transfer unit.

In addition, the transfer unit of the workpiece recovery device according to an embodiment of the present invention is formed to extend in the longitudinal direction a first plate; a second plate formed to be spaced downward from the first plate; a hollow portion formed between the first plate and the second plate; and a plurality of holes passing through the first plate, wherein the air introduced through the hollow part is sprayed through the plurality of holes.

In addition, the tapered surface formed in each of the plurality of holes of the workpiece recovery apparatus according to an embodiment of the present invention is characterized in that it forms an angle of more than 0 degrees and less than 90 degrees with the first plate.

In addition, the plurality of holes of the workpiece recovery device according to an embodiment of the present invention, a first group of holes arranged at a predetermined interval along a first reference line extending in the longitudinal direction; and a second hole group disposed at a predetermined interval along a second reference line extending in the length direction, wherein the first reference line and the second reference line are formed to cross the first plate in the width direction, The adjacent first hole group and the second hole group are not arranged on the same parallel line in the width direction.

In addition, the tip of the second plate of the workpiece recovery device according to an embodiment of the present invention is spaced apart and bent upwardly from the first plate to form an auxiliary hole, and air is passed through the plurality of holes and the auxiliary hole. It is characterized in that it is sprayed.

In addition, both sides of the first plate of the workpiece recovery device according to an embodiment of the present invention are formed to extend in the longitudinal direction, characterized in that the wing portion for preventing the separation of the workpiece is formed.

In addition, the workpiece recovery apparatus according to an embodiment of the present invention further includes a groove formed to be recessed along the first hole group and the second hole group on the lower surface of the first plate, and is introduced into the hollow part Air is characterized in that it moves along the groove.

In addition, the workpiece recovery device according to an embodiment of the present invention is a control unit for controlling the pressure of air introduced through an air supply passage connected to the inlet to supply air to the hollow portion according to the inclination angle of the transfer unit; It is characterized in that it further comprises.

In the workpiece recovery apparatus according to the present invention, air injected from a plurality of holes formed in the transfer unit forms an air layer on the upper surface of the transfer unit. The air layer reduces the frictional force from the conveying part applied to the workpiece, so that the workpiece can be discharged smoothly regardless of the weight, shape, and inclination angle of the conveying part. For this reason, the number of work pieces that can be discharged per unit time is increased, thereby increasing productivity.

In addition, since the angle between the tapered surface of the hole formed in the first plate and the first plate is set to an acute angle, the time for air to stay on the upper surface of the first plate is increased. Accordingly, the thickness of the air layer is increased and the frictional force reduction effect is increased.

In addition, since the auxiliary hole is formed and the air injected through the auxiliary hole presses the work piece in the direction in which the work piece slides, there is an effect that the discharging ability of the work piece is improved.

In addition, it is possible to expand the overlapping range of the air layer by separating the plurality of holes formed in the transfer part into a first hole group and a second hole group so that the first hole group and the second hole group are not arranged on a parallel line. Even when one hole is blocked, an adjacent hole can cover it, thereby maintaining the effect of reducing friction.

In addition, by forming a flow path for inducing injection of air through a groove connecting a plurality of holes by the conveying unit according to another embodiment to increase the thickness of the air layer formed on the upper surface of the first plate, the effect of increasing the frictional force reduction effect there is

1 shows a conventional bucket-type workpiece recovery device.
Figure 2 shows a conventional sliding-type workpiece recovery device.
3 is a perspective view of a workpiece recovery device according to the present invention.
Figure 4 shows the vicinity of the transfer part of the workpiece recovery device according to the present invention.
5 is a schematic view showing the arrangement of the hole of the workpiece recovery device according to the present invention.
6 is a cross-sectional side view of the workpiece recovery device according to the present invention.
7(a) and 7(b) compare the formation ranges of the air layer according to the arrangement of the holes.
8 is an enlarged view of the rear surface of the transfer unit according to another embodiment of the present invention.

Hereinafter, with reference to the drawings of the workpiece recovery apparatus according to an embodiment of the present invention will be described in detail. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those of ordinary skill in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And, in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numbers refer to like elements throughout.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of description.

The terminology used herein is for the purpose of describing the embodiments, and therefore is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Definitions of terms used below are as follows. The "longitudinal direction" is the x-axis direction with reference to FIG. 3 in the same member, and the "width direction" is the y-axis direction with respect to FIG. 3 in a direction orthogonal to the longitudinal direction in the same member. In addition, "vertical direction" means a z-axis direction in a direction forming a height orthogonal to the longitudinal direction and the width direction at the same time in the same member. In addition, "upward" means an upward direction in a vertical direction, and "downward" means a downward direction in a vertical direction. In addition, the inner side means a side relatively close to the center of the same member. In addition, "front" means the vicinity of the discharge part with respect to the conveying part, and "rear" means the vicinity of the head part based on the conveying part.

Figure 3 shows a perspective view of the workpiece recovery device according to the present invention, Figure 4 shows the vicinity of the transfer part of the workpiece recovery device according to the present invention, Figure 5 schematically shows the arrangement of the holes of the workpiece recovery device according to the present invention 6 is a cross-sectional side view of the workpiece recovery device according to the present invention. 7 (a) and 7 (b) is a comparison of the formation range of the air layer according to the arrangement of the hole, Figure 8 is an enlarged view of the rear surface of the transfer unit according to another embodiment of the present invention.

Hereinafter, a workpiece recovery apparatus according to the present invention will be described with reference to FIGS. 3 to 8 .

3 is a perspective view of a workpiece recovery device according to the present invention, and the workpiece recovery device according to the present invention includes a head part 100 , a discharge part 200 , and a transfer part 300 .

The head part 100 is a spindle head of a machine tool, and a chuck 110 is formed at the tip. A workpiece 10 is detachably coupled to the chuck 110 . The finished workpiece 10 is accommodated in a transfer unit 300 to be described later. In FIG. 3 , an example of a cylindrical workpiece 10 is illustrated, but the present invention is not limited thereto.

The discharge unit 200 is where the workpiece 10 transferred by the conveying unit 300 is discharged. The discharge unit 200 is preferably adjacent to the other side of the transfer unit 300 . Accordingly, the workpiece 10 is introduced into the discharge unit 200 via the transfer unit 300 .

At this time, it is preferable that the discharge unit 200 is installed to be positioned vertically below the head unit 100 . More specifically, it is preferable that the height in the vertical direction of the head unit 100 is higher than the height in the vertical direction of the discharge unit 200 with respect to the bed of the machine tool.

Due to this structure, when the transfer unit 300 turns so that one side of the transfer unit 300 is adjacent to the head unit 100 and the other side of the transfer unit 300 is adjacent to the discharge unit 200, an inclination is formed, and the workpiece (10) is slid in the direction of the discharge unit 200 from the head unit (100). Without applying a separate physical force, the workpiece 10 is moved to the discharge unit 200 by its own weight.

In addition, as shown in FIGS. 3 and 4 , according to another embodiment of the present invention, the workpiece recovery device according to the present invention has an inlet to supply air to the hollow part 330 according to the inclination angle of the transfer part 300 . The control unit 400 for controlling the pressure of air introduced through the air supply passage 410 connected to the 350 may be further included.

That is, the control unit 400 is installed in the main body or the discharge unit 200 of the machine tool. The control unit 400 controls the pressure of air supplied to the inlet 35 and the hollow portion 330 through the air supply passage 410 according to the inclination angle of the transfer unit 300 . That is, when the angle between the conveying unit 300 and the ground or the discharge unit 200 is large, as the frictional force decreases, air at a small pressure is supplied to the inlet 350 and the hollow portion 330 through the air supply passage 410 . supply Conversely, when the angle between the conveying unit 300 and the ground or the discharge unit 200 is small, as the frictional force increases, air at a small pressure is supplied to the inlet 350 and the hollow portion 330 through the air supply passage 410 through the air supply passage 410 . supply In this way, the friction force received by the discharged workpiece is changed according to the inclination angle formed by the transfer unit 300 with the ground or the discharge unit 200, and the optimum air supply pressure is controlled and supplied according to the change in frictional force. Reliability of the workpiece recovery operation and efficiency are maximized, and maintenance costs can be reduced.

In addition, the control unit 400 is connected to the injection port 350 in order to supply air to the hollow part 330 according to the shape or weight of the final processed workpiece through the CNC program and machining program input to the control unit 400 in advance. It is possible to control the pressure of the air introduced through the air supply flow path (410).

4 shows the vicinity of the transfer unit 300 of the workpiece recovery device according to the present invention, FIG. 5 schematically shows the arrangement of the holes 340 of the workpiece recovery device according to the present invention, and FIG. A side cross-sectional view of the workpiece recovery device is shown. Hereinafter, the transfer unit 300 of the workpiece recovery apparatus according to the present invention will be described in detail with reference to FIGS. 4 to 6 .

The transfer unit 300 is positioned between the head unit 100 and the discharge unit 200 . One side of the transfer unit 300 is adjacent to the head unit 100 , and the other side of the transfer unit 300 is adjacent to the discharge unit 200 . For this reason, the transfer unit 300 is inclined in the vertical direction with respect to the bed of the machine tool. Accordingly, the workpiece 10 initially accommodated on one side of the transfer unit 300 slides along the transfer unit 300 and flows into the discharge unit 200 .

The transfer unit 300 is coupled to the rotation shaft 301 and rotates. For this reason, there is an advantage in that the space can be minimized by adjoining the head part 100 and the discharge part 200 only at the necessary time to discharge the workpiece 10 .

The transfer unit 300 includes a first plate 310 , a second plate 320 , a hollow part 330 , a hole 340 , and an injection hole 350 .

The first plate 310 is formed to extend in the longitudinal direction. For example, it is preferable to have a rectangular parallelepiped shape having a predetermined thickness as shown in FIG. 4 .

The second plate 320 is formed to extend in the longitudinal direction like the first plate 310 . The second plate 320 is spaced downward from the first plate 310 . Accordingly, a hollow portion 330 is formed between the first plate 310 and the second plate 320 .

The injection hole 350 is formed at a point where the first plate 310 or the second plate 320 or the first plate 310 and the second plate 320 contact each other. For example, the injection hole 350 may be formed in the vicinity of the discharge unit 200 . When the inlet 350 is formed in the vicinity of the discharge unit 200, the air 20 introduced through the inlet 350 is sequentially flowed from the front to the rear in the hollow portion 330 to be formed in the transfer unit 300 It is evenly distributed in the plurality of holes 340 . For this reason, there is an advantage in that the spraying of the air 20 only in a specific area is prevented, and the effect of reducing the friction force applied to the work 10 can be maximized.

Although not shown in the drawing, a device capable of introducing external air into the inlet 350 may be provided, and the external air is introduced into the hollow part 330 through the inlet 350 .

A plurality of holes 340 are formed in the first plate 310 . The plurality of holes 340 are formed through the first plate 310 . Accordingly, the air 20 introduced into the hollow part 330 is sprayed upward of the first plate 310 through the plurality of holes 340 . The upper surface of the first plate 310 is a contact surface where the workpiece 10 and the transfer unit 300 come into contact with each other, and air 20 is sprayed onto the contact surface.

Accordingly, as shown in FIG. 6 , an air layer 21 formed by the sprayed air 20 is formed on the upper surface of the first plate 310 (shown by a dotted line in FIG. 6 ). In the conventional case, the air layer 21 is absent and the workpiece 10 is in direct contact with the portion corresponding to the upper surface of the first plate 310 of the present invention. Accordingly, the workpiece 10 receives the frictional force of the portion corresponding to the upper surface of the first plate 310 as it is.

If the workpiece 10 is heavy, the shape is simple, or the inclination is close to 90 degrees, it is not a problem, but in the opposite case, the workpiece 10 does not slide smoothly due to frictional force, so the discharge part 200 There is a problem that it is not transferred to the corresponding part.

However, according to the workpiece recovery device according to the present invention, since the air layer 21 is formed between the workpiece 10 and the upper surface of the first plate 310, the workpiece 10 has a friction coefficient of the first plate 310. will not be applied as such. Accordingly, the effect of reducing the frictional force applied to the work piece 10 occurs.

Due to this, since the sliding operation of the workpiece 10 in the transfer unit 300 is made more smoothly than in the conventional case, the restrictions depending on the shape, weight, and inclination of the transfer unit 300 of the work 10 are weakened and the workpiece ( 10) The effect of increasing the discharge capacity occurs.

In addition, the time for which the workpiece 10 stays without being discharged is reduced, and the amount of the workpiece 10 that can be produced per hour is relatively increased, so that the productivity of the workpiece 10 can be improved.

A tapered surface 3401 is formed at the interface between the plurality of holes 340 and the first plate 310 . The tapered surfaces 3401 respectively formed in the plurality of holes 340 have a predetermined angle with the first plate 310 .

In this case, the predetermined angle is preferably greater than 0 degrees and less than 90 degrees. As an example, in FIG. 6 , the air 20 is sprayed at an angle of 45 degrees. Here, 90 degrees is an angle between the tangent line at one point of the first plate 310 and the first plate 310, and in the range of more than 0 degrees and less than 90 degrees, the upper end of the tapered surface 3401 is tapered. It means a range when positioned at the rear in the longitudinal direction of the transfer unit 300 than the lower end of the surface 3401 .

When the angle is 0 degrees, it is preferable that the air 20 cannot be sprayed, so that it is more than 0 degrees. In addition, in the case of 90 degrees or more, the injection direction of the air 20 is formed in front of the transfer unit 300 with respect to the tangent line of the first plate 310 . Conversely, when the angle is greater than 0 degrees and less than 90 degrees, the injection direction of the air 20 is formed in the rear of the transfer unit 300 with respect to the tangent line of the first plate 310 .

In the case of the front of the transfer unit 300 based on the tangent line of the first plate 310 , the air 20 injected from the hole 340 flows in a descending direction along the inclination of the first plate 310 . However, as in the present invention, when the angle between the tapered surface 3401 and the first plate 310 is greater than 0 degrees and less than 90 degrees, the injected air 20 goes against the inclination of the first plate 310 , After first flowing in the ascending and descending direction, it flows in the descending direction along the inclination of the first plate 310 after a certain period of time has elapsed. For this reason, there is an advantage in that the residence time on the upper surface of the first plate 310 is increased. Accordingly, there is an advantage in that the effect of reducing the frictional force applied to the work 10 is increased.

An auxiliary hole 321 may be formed at the rear of the transfer unit 300 . Referring to FIG. 6 , the front end of the second plate 320 is preferably formed to extend longer than the first plate 310 in the longitudinal direction, and is bent to be spaced apart from the first plate 310 upward.

Accordingly, an auxiliary hole 321 through which air 20 can be additionally injected is formed between the front end of the second plate 320 and the upper surface of the first plate 310 . The air 20 introduced into the hollow part 330 is primarily injected through the hole 340 , and the air 20 not injected through the hole 340 is injected through the auxiliary hole 321 .

Air 20 injected through the auxiliary hole 321 flows from the rear to the front with respect to the upper surface of the first plate 310 . At this time, since the workpiece 10 also slides from the rear to the front due to the height difference between the head part 100 and the discharge part 200 and the resulting inclination, the workpiece 10 is injected through the moving direction and the auxiliary hole 321 The direction of the air 20 is the same. Therefore, since the work 10 receives a force to move in the direction of the discharge unit 200 , there is an advantage in that the discharging effect of the work 10 is increased.

5, the plurality of holes 340 according to the present invention will be described in detail. The plurality of holes 340 form a first hole group 341 and a second hole group 342 .

The first hole groups 341 are formed at predetermined intervals in the longitudinal direction along the first virtual reference line A formed on the first plate 310 . Also, the second hole groups 342 are formed at predetermined intervals in the longitudinal direction along the imaginary second reference line B formed on the first plate 310 .

The first reference line A and the second reference line B are formed to cross the first plate 310 in the width direction, as shown in FIG. 5 . In this case, it is preferable that the first hole group 341 and the second hole group 342 adjacent to each other are not arranged on the same parallel line C in the width direction.

In order to explain the effect of this, reference will be made to FIG. 7 . 7 (a) shows the injection range of the air 20 when the first hole group 341 and the second hole group 342 adjacent to each other are arranged on the same parallel line C in the width direction, 7 (b) is the injection of air 20 when the first hole group 341 and the second hole group 342 adjacent to each other are not arranged on the same parallel line C in the width direction as in the present invention. range is indicated.

7(a) and 7(b) are compared. It is assumed that the air layer 20 formed by the air 20 injected from the hole 340 forms a circle. In FIG. 7A , an overlapping range with the air layer 20 generated in the holes 340 adjacent to each other in the width direction is generated, and the overlapping range is not generated with the holes 340 adjacent to each other in the longitudinal direction.

However, in FIG. 7(b) , the air layer 20 formed in any one hole 340 has a circular shape around the hole 340 and the air layer 20 formed in a plurality of other adjacent holes 340 and all overlap Accordingly, an effect of expanding the overlapping range occurs.

If the workpiece recovery device is continuously used, the hole 340 may be blocked by foreign substances generated from the workpiece 10 .

At this time, when a plurality of holes 340 are formed in a zigzag pattern as in the present invention, when any one hole 340 is blocked and air 20 is not sprayed, a hole 340 adjacent to the blocked hole 340 . Since the range that can cover this is wider than the case according to FIG. 7( a ), it is possible to minimize the loss of the air layer 21 .

Wings 311 may be formed on both sides of the first plate 310 . The wing part 311 has a predetermined height in the vertical direction, and is preferably formed to extend in the longitudinal direction along the first plate 310 .

Due to the configuration of the wing portion 311 , there is an effect that can prevent the workpiece 10 from being separated to the outside of the transfer unit 300 in the course of sliding along the transfer unit 300 . Due to this, the discharge capability of the workpiece recovery device is increased.

8 is an enlarged view of the rear surface of the transfer unit 300 according to another embodiment of the present invention. Hereinafter, the configuration of the transfer unit 300 according to another embodiment and effects thereof will be described with reference to FIG. 8 .

The transfer unit 300 according to another embodiment includes all of the configuration of the transfer unit 300 according to an embodiment, and further includes a groove 360 .

The groove 360 is formed to be recessed along the first hole group 341 and the second hole group 342 . In addition, it is preferable that the grooves 360 are formed to connect between the first hole groups 341 or the second hole groups 342 arranged on the parallel lines C. As shown in FIG.

In addition, the groove 360 is also formed in the longitudinal direction to connect the grooves 360 connecting the first hole group 341 or the second hole group 342 . Accordingly, as shown in FIG. 8 , a single flow path is formed that connects all of the plurality of holes 340 formed in the first plate 310 .

Unlike one embodiment, in the transport unit 300 according to another embodiment, when the air 20 is introduced into the hollow part 330 , the flow of the air 20 is induced through the flow path to induce a plurality of holes 340 . is sprayed with Accordingly, there is an effect that the injection amount of the air 20 according to another embodiment is increased than the injection amount of the air 20 according to one embodiment.

Due to this, the thickness of the air layer 21 is thicker than the case according to the embodiment, and the effect of reducing the frictional force applied to the workpiece 10 is further increased. In addition, the discharging ability of the workpiece 10 may be improved to increase productivity.

Hereinafter, the process in which the air 20 is sprayed to form the air layer 21 will be described. The air 20 introduced through the inlet 350 flows in the hollow part 330 .

The air 20 flows from the front to the rear of the transfer unit 300 , passes through the plurality of holes 340 formed in the first plate 310 , and is sprayed upwards of the first plate 310 . In addition, the non-injected air 20 is additionally injected along the auxiliary hole 321 .

Accordingly, the air layer 21 is formed on the upper surface of the first plate 310 . The air layer 21 is positioned between the work piece 10 and the first plate 310 to reduce the frictional force applied to the work piece 10 . Therefore, even when the weight of the workpiece 10 is light, has a specific shape, such as having a large area, or the inclination angle of the transfer unit 300 is low, the discharge of the workpiece 10 can be made smoothly, so that productivity is improved. It works.

In addition, the air 20 injected from the auxiliary hole 321 pressurizes the workpiece 10 in the direction of the discharge unit 200 , thereby maximizing the discharge ability.

Although the detailed description of the present invention described has been described with reference to the preferred embodiment of the present invention, those skilled in the art or those having ordinary knowledge in the technical field will It will be understood that various modifications and variations of the present invention can be made without departing from the technical scope. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: head, 2: ejection device,
3: central axis, 4: bucket,
5: arm, 6: plate,
10: workpiece, 20: air,
21: air layer, 100: head part,
110: chuck, 200: discharge part,
300: transfer unit, 301: rotation shaft,
310: first plate, 311: wing,
320: second plate, 321: auxiliary hole,
330: hollow, 340: hole,
3401: tapered surface, 341: first hole group,
342: second hole group, 350: inlet,
360: groove, 400: control unit,
410: air supply flow path, A: first reference line,
B: second reference line, C: parallel line.

Claims (8)

a head part on which a workpiece is detachably installed by a chuck;
a discharge part installed vertically below the head part; and
Containing; and a transfer unit having one side adjacent to the head unit and the other side adjacent to the discharge unit, forming an inclination in a direction perpendicular to the bed to transfer the work to the discharge unit; and
When the workpiece moves along the conveying part, air is sprayed on the contact surface of the workpiece and the conveying part,
The transfer unit,
a first plate extending in the longitudinal direction;
a second plate formed to be spaced downward from the first plate;
a hollow portion formed between the first plate and the second plate; and
a plurality of holes passing through the first plate; and
Air introduced through the hollow part is sprayed through the plurality of holes,
The tip of the second plate is spaced apart and bent upwardly from the first plate to form an auxiliary hole,
Air is ejected through the plurality of holes and the auxiliary hole.
delete According to claim 1,
The tapered surface formed in each of the plurality of holes forms an angle greater than 0 degrees and less than 90 degrees with the first plate.
According to claim 1,
The plurality of holes,
a first group of holes arranged at predetermined intervals along a first reference line extending in the longitudinal direction; and
forming a second hole group disposed at a predetermined interval along a second reference line extending in the longitudinal direction;
The first reference line and the second reference line are formed to cross the first plate in the width direction, and the adjacent first hole group and the second hole group are not arranged on the same parallel line in the width direction. work piece recovery device.
delete According to claim 1,
The workpiece recovery device, characterized in that the wings are formed extending in the longitudinal direction on both sides of the first plate to prevent separation of the workpiece. 5. The method of claim 4,
Further comprising; a groove formed to be recessed along the first hole group and the second hole group in the lower surface of the first plate,
The work piece recovery device, characterized in that the air flowing into the hollow part moves along the groove.
According to claim 1,
The workpiece recovery device further comprising a; a control unit for controlling the pressure of the air introduced through the air supply passage connected to the inlet to supply air to the hollow part according to the inclination angle of the transfer part.

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