KR101516334B1 - Loading and unloading apparatus for CNC-lathes - Google Patents

Abstract

Disclosed is a loading and unloading apparatus capable of automatically feeding or discharging a material from a specific place while freely moving between each of the CNC lathe when the same workpiece is supplied to a plurality of CNC lathe and the same workpiece is to be discharged. The loading and unloading apparatus according to the present invention is a loading and unloading apparatus comprising: a two-dimensional moving table arranged on a plurality of CNC lathes and moving left and right and up and down; and two chucks orthogonally intersecting each other while being coupled to a lower end of the two- An input / output table disposed between a plurality of CNC lathes, the material for machining and the finished material being picked up or placed by a reversible chuck of the chuck portion, a CNC lathe, a two- And a control unit for controlling the chuck and the entry / exit table.

Description

An apparatus for automatically loading and unloading materials on a plurality of CNC lathes {Loading and unloading apparatus for CNC-lathes}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material loading and unloading apparatus for a computer numerically controlled lathe (hereinafter referred to as a "CNC lathe"), and more particularly, , And a device capable of automatically unloading a processed workpiece.

Generally, a machine tool is a stationary power machine used to manufacture parts made of metal or other materials. A typical example of such a machine tool is a lathe for processing shafts, pipes, etc., which clamps the workpiece to a chuck rotated by a main shaft, rotates the workpiece, and cuts the desired shape with a processing tool to complete the product. That is, as shown in the example of Fig. 1, the round bar type workpiece 1 is processed into the product 1a.

Particularly, since most of the mills that manufacture the machine parts of the shelves establish automation lines, the numerical control (NC) system has been developed to automatically process the products without depending on manpower. As a result of this development, computerized numerical control (CNC) lathes have been developed for the current numerical control lathes to machine products in conjunction with computers.

2, the CNC lathe 10 is provided with a main shaft 20 having a chuck 21 for fixing the work 1 therein, and at least one tool (not shown) 31 are provided. At this time, the tool rest 30 is configured to be movable up and down and left and right. Thus, while the work 1 is being rotated at high speed by the main shaft 20, the workpiece 1 is machined to complete the workpiece 1a while the tool stand 30 is moved up and down and left and right according to the set program.

The material used in the CNC lathe can be applied in various ways, from long to short. In the case of a long material, Korean Patent Registration No. 1124443 filed by the applicant / inventor and registered by the inventor : Automatic feeding and discharging device for CNC lathe) and Korean Patent Registration No. 0870049 (Nov. 24, 2008, entitled Automatic feeding and discharging device for CNC lathe) have been disclosed.

3, a separate input / output device 40 is attached to the outside of the apparatus so that the workpiece 1 can be pushed or pulled into the CNC lathe 10 from the outside. However, such an input / output device is made possible when the material is long, and in the case of a short material, there is an inconvenience that the CNC lathe is opened and the hand is directly fixed to or removed from the chuck.

In the case of machining the same material in a large quantity, it is necessary to use a plurality of CNC lathes. Since the input / output devices must be individually installed, it is difficult to manage the lines because the lines are unnecessarily unnecessary.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a CNC lathe having a plurality of CNC lathes, And to provide a loading and unloading apparatus capable of supplying and discharging the same.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

In order to solve the above problems,

A two-dimensional turning bar arranged on the upper side of a plurality of CNC lathe and moving left and right and up and down;

A chuck part in which two chucks, which are two-dimensionally coupled to the lower end of the billet and crossed at right angles, are selectively reversibly movable;

An input / output table disposed between a plurality of CNC lathes, the material for processing and the processed material being picked up or placed by a reversible chuck of the chuck; And

And a control unit for controlling the CNC lathes, the two-dimensional moving table, the chuck, and the I / O table. The apparatus for automatically loading and unloading materials on a plurality of CNC lathes is provided.

At this time, the chuck part is composed of a rotating block to which two reversible chucks are mounted, and a body block that is slidably coupled to the left and right sides of the fixed plate coupled to the lower end of the vertical bar of the feeding bar while the rotating block is mounted, And a sensor for detecting the movement of the body block is disposed between the body block and the fixed plate.

Alternatively, the entry / exit table may be constituted of a material supply portion on which the material to be processed is raised, and a material discharge portion on which the processed material or the defective material is placed. The material supply portion and the material discharge portion include a supply conveyor and a discharge conveyor Lt; / RTI >

Here, the feed conveyor may be a slit conveyor, in which at least one workpiece to be processed is raised, and at the outlet side of the feed conveyor, a jaw may be installed to hold the workpiece inwardly and center it with the chuck.

More preferably, the jaw is formed in a circular shape corresponding to the outer diameter of the material when the inlet has a widened shape and the central portion is worn out. A proximity sensor for detecting the entry of the material is provided on the upper side of the jaw, By sensing, the jaws can be actuated to be pushed down to transmit to the control unit that the material to be machined is waiting.

The discharge conveyor is a slit conveyor, and at least one processed or defective material is loaded, and the number of discharges of the material for one row is allocated to the memory in the control unit. When the number is filled, the slit conveyor is automatically moved one by one It can be moved.

In addition, the material discharging portion may be provided with a discharge switch for moving the discharging conveyor to forcibly discharge the materials.

As described above, in the material loading and unloading apparatus according to the present invention, the material to be processed is put into each CNC lathe while moving from both sides of the entry / exit table located in the middle, or the processed material can be discharged So that it is possible to operate in a large quantity, and if only the material for processing is placed on the supply conveyor, there is an advantage that it can be operated unattended.

In addition, the apparatus according to the present invention is advantageous in that when the defective material is loaded on the chuck portion, the chuck can detect that the main shaft of the CNC lathe collides with the workpiece, thereby preventing breakage of the device.

In the apparatus according to the present invention, the proximity sensor is installed in the jaw that waits for the material to be machined, so that the approach of the material is detected by the proximity sensor, and the positioned material is sent to the control unit .

In addition, when any one proximity sensor is detected, the feed conveyor is not operated, and when any proximity sensor is not detected, the feed conveyor is operated, and the chuck or two-dimensional feeder is moved by the proximity sensor There is an advantage that it is possible to automatically stop the further material loading operation by linking it with the control unit since the material to be supplied is not detected.

1 is a view showing a working example of a round bar in a lathe,
Fig. 2 shows an example of the processing of the automatic lathe,
3 is a view showing an example of a work input / output device according to the prior art,
4 is a view showing the entire loading and unloading apparatus according to the present invention,
FIG. 5 is a detailed view of the chuck shown in FIG. 4,
FIG. 6 is a perspective view showing the entry / exit table shown in FIG. 4,
FIG. 7 is a view showing a jaw operation state of the material supply unit shown in FIG. 6,
8 is a view sequentially showing a state in which a plurality of CNC lathe machines are automatically loaded and unloaded by an apparatus according to the present invention,
9 is a view sequentially showing a state in which a workpiece to be machined is picked up and loaded onto a main shaft of a CNC lathe,
10 is a view sequentially showing a state in which a material to be machined is loaded while unloading a machined material on a main axis of a CNC lathe by picking up a material to be machined in a chuck portion,
11 is a view showing an operation of the material discharge portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 4 is a view showing an overall structure of a device for automatically loading and unloading materials on a plurality of CNC lathes according to the present invention. As shown in this figure, the loading and unloading apparatus 100 according to the present invention includes: Dimensional feeder 110 is provided on the upper side of the two CNC lathe machines 10 in a state where the two CNC lathe machines 10 are disposed on the lower portion of the two- And an input / output table 150 for automatically loading and unloading the material to be loaded and unloaded materials is disposed between the CNC lathes 10.

First, in the two-dimensional transfer unit 110, a horizontal rail 112 is installed in a lateral direction, a block body 114 moving horizontally along the horizontal rail 112 is coupled, And a vertical bar 116 moving up and down. The lateral rails 112, the block bodies 114 and the vertical rods 116 are ordinary transporting means for X-axis and Y-axis transport, and are not particularly suggested in the present invention. Driving means such as an electric motor or a common pressure cylinder may be mounted on the lateral rail 112, the block body 114 and the vertical body 116 so as to move in the X-axis direction and the Y-axis direction for X- will be.

The block body 114 moves along the horizontal rail 112 to the upper side of the CNC lathe 10a or moves to the upper side of the CNC lathe 10b on the right side and supplies the material to each CNC lathe 10 The material waiting for supply is placed or moved to the upper side of the entry / exit table 150 on which the processed material is placed. When the block body 114 stops on the corresponding point as described above, the vertical block 116 descends by receiving the guide of the block body 114 to pick up the material to be processed from the entry / exit table 150, The material is lifted and lifted from the CNC lathe 10 and conversely the material for machining is inserted into the main shaft 20 of the CNC lathe 10 or the processed material is fed to the input and output table 150.

In the preferred embodiment of the present invention and the drawings, two CNC lathes 10 have been described. However, one or two or more CNC lathes 10 may be disposed on both sides of the entry / exit table 150, It may be possible to discharge the supplied or processed material.

5 is a detailed view of a chuck used in an apparatus for automatically loading and unloading materials on a plurality of CNC lathes according to the present invention.

5, the chuck 130 for unloading the workpiece or unloading the processed workpiece includes a fixed plate 132 coupled to the lower end of the vertical table 116, A rotation block 136 selectively coupled to the body block 134 at an angle of 45 degrees and selectively rotated at an angle of 45 degrees and a rotation block 136 coupled to the rotation block 136 so as to be perpendicular to each other, And two chucks 138 for tightening or loosening the chuck 1. That is, two chucks 138 orthogonal to each other are coupled in the transverse direction and one in the longitudinal direction. When the rotary block 136 is rotated 180 degrees, the first chuck 138a, which was in the transverse direction, And the second chuck 138b in the longitudinal direction is changed in the lateral direction.

The reason why the chucks 138 are provided in two is that the chuck 130 enters the CNC lathe 10 or enters the entry / exit table 150, This is to make it possible to work.

The chuck 130 has a structure in which the body block 134 can be elastically supported so as to be pushed back so as to prevent deterioration of machining quality due to defective workpieces or breakage of the apparatus. In other words, if the pipe is of the pipe type as shown in the drawing, the hollow may be a source of origin due to manufacturing problems, may not be true, and the size of the hollow may be different. When the hollow of the workpiece is defective, when the workpiece is loaded on the main shaft 20 of the CNC lathe 10, there is a problem that the main shaft is damaged due to the misalignment between the hollow and the main shaft. Therefore, So that there is a problem that the quality of the machining is deteriorated.

The chuck 130 according to the present invention has a structure in which the body block 134 can be pushed back to a portion where the body block 134 and the fixing plate 132 are coupled to each other. That is, the body block 134 has a structure that slides left and right with respect to the fixed plate 132, and a spring 140 is mounted inside the body block 134 to have a reaction force, and the sensor 142 detects an action of being pushed backward by an external force It is. Therefore, if the hollow of the workpiece and the spindle of the workpiece do not coincide with each other, if the workpiece is defective, the workpiece will naturally interfere with the main shaft and the workpiece will be caught by the sensor 142 while pushing the body block 134 backward .

FIG. 6 is a perspective view showing an entry / exit table of the loading and unloading apparatus according to the present invention, and FIG. 7 is a view showing an action of the material supplying unit shown in FIG.

6, the entry / exit table 150 according to the present invention includes a material supply unit 160 and a material discharge unit 170.

First, the material supply unit 160 includes a supply conveyor 161 for transporting the material 1 to one side of the material 1, a material conveying unit 161 installed on the upper side of the supply conveyor 161, And a proximity sensor 163 for detecting that the workpiece 1 is received by the jaw 162. [ At this time, the supply conveyor 161 may be formed to have a width enough to arrange at least one or more than one row of the material, so that the plurality of materials can be awaited in advance. In this case, You will need to install them in a matching number.

The feed conveyor 161 is positioned in front of the apron conveyor 162 to allow a certain amount of heat to be aligned before the materials enter the jaw 162 while minimizing shaking since the materials are raised and raised as viewed in the drawings. A slit conveyor can be used. In this slit conveyor, a rod having a certain width is repeatedly and repeatedly rotated by a chain, so that when a plurality of materials are placed on each slit, the materials placed thereon can be simultaneously introduced into the jaws 162.

The jaw 162 of the material supply unit 160 according to the present invention has a structure in which the material is selectively widened or torn as shown in FIG. It is formed to be circular when it is folded. That is, the entrance is opened to receive the material, and after the material has moved inward, the jaws 162 are closed so that the center of the material coincides with the center of the jaws 162. This is because the chuck portion 130 coincides with the center of the chuck portion 130 and the center of the chuck portion 130 of the work 1 between them because the center of the chuck portion 162 coincides with the center of the chuck portion 130, .

Each such jaw 162 is actuated by an individually actuatable actuator 164 and a proximity sensor 163 is coupled directly above the jaw 162 to cause the workpiece 1 to move relative to the center of the jaw 162 The jaw 162 is pushed through the actuator 164 and the workpiece 1 is positively positioned. At this time, it is preferable that the jaws 162 are installed above the transfer destination of the supply conveyor 161. That is, the jaws 162 and the supply conveyor 161 must be spaced apart so that the jaws 162 and the supply conveyor 161 do not interfere with each other, and the actuator 164, which controls the movement of the jaws 162, Since it must be installed outside the terminating end of the feed conveyor 161 in order to be able to engage uninterruptedly with the feed conveyor 161.

The proximity sensor 163 of the material supply unit 160 according to the present invention recognizes that the material 1 is not detected in addition to confirming that the material 1 is approaching, It also plays a role of driving. That is, since the supply conveyor 161 of the material supply unit 160 according to the present invention can not always be rotated, the proximity sensor 163 controls the operation of the supply conveyor 161 in consideration of the current position of the materials 1, .

Referring again to FIG. 6, the material discharging unit 170 includes a discharge conveyor 171 of the same type as that used in the supply conveyor 161 of the material supplying unit 160. The discharge conveyor 171 is a place where the material 1a finished in the chucking portion 130 is raised, and is operated by two controls.

At the time of discharging the processed material from the chuck part 130, the discharging point is placed sequentially from one side of the discharge conveyor 171 to the other side. The first operation control of the discharge conveyor 171 is performed such that when the chuck 130 has lowered the processed workpiece 1a, the number of the lowered workpiece 1a is memorized and initialized, (171) by one slit. The second operation control of the discharge conveyor 171 is to separately set a discharge switch (not shown) at the end of the discharge conveyor 171 to force the discharge conveyor 171 to circulate.

The ejection memory of the chuck 130 is not initialized even when the ejection switch is operated as described above. Even after the ejection conveyor 171 moves, the processed material 1a is put down at the next ejection point.

On the other hand, when the material is supplied, the defective material should be discharged without being loaded. The defective material 1b is discharged through the discharge conveyor 171. Since the defective material 1b is located on the side of the discharge conveyor 171 and is not processed, it can be easily identified at a glance, thereby making it possible to prevent the reuse of the defective material 1b again.

The material loading and unloading apparatus 100 according to the present invention should be configured including a control unit. That is, the order and timing of each CNC lathe 10, the two-dimensional transfer unit 110, the chuck unit 130, and the entry / exit table 150 should be organically operated. And is operated by a program, an operation, and a controller of the control unit.

Hereinafter, the operation sequence of the material loading and unloading apparatus 100 according to the present invention and its operations will be briefly described with reference to the drawings.

FIG. 8 is a view sequentially showing the operation of the material loading and unloading apparatus according to the present invention, FIG. 9 is a view sequentially showing a material loaded by a chuck, FIG. FIG. 11 is a view showing a discharge state of the material discharge portion. FIG.

First, material for processing is placed on the slits of the supply conveyor 161 in the material supply unit 160 of the entry / exit table 150 as a matrix. In the preferred embodiment of the present invention, the size of the slit is limited so that five rows can be laid, and the length of the feed conveyor 161 is limited so that about ten rows can be laid. The number of journals 162 is limited to five, but the number of journals 162 may vary depending on the size of the apparatus, the working time, and the like.

As in the case of setting five lines in the material supply unit 160, the material discharge unit 170 is provided with a processed or defective material in a row The number is limited to five, and accordingly, the five discharge points, the sequence and the number are allocated to the control unit by the program and the memory.

When the material loading and unloading apparatus 100 according to the present invention starts to be driven, it is checked at which position the material 1 to be fed first is located. That is, the proximity sensor 163 of the material supply unit 160 confirms whether the material 1 exists. If no confirmation is made, the supply conveyor 161 is driven to return to the proximity sensor 163, When the detection is confirmed, the driving of the supply conveyor 161 is stopped and the two-dimensional transferring unit 110 and the two-dimensional transferring unit 110 are moved toward the selected material 1 in the detected proximity sensor 163, as shown in the first drawing of FIG. The chuck portion 130 is directed.

The apparatus of the present invention does not perform any operation unless the proximity sensor 163 of the material supply unit 160 senses the material 1 for processing. Also, since proximity sensors 163 may not necessarily sense one material but may detect several objects at the same time, it is preferable to set priorities in the program.

The second chuck 138b of the chuck 130 picks up the material 1 and lifts it up after the chuck 130 is directed toward the material 1 at the position sensed by the proximity sensor 163 as described above. 8, the CNC lathe 10a is moved to one of the CNC lathe 10a according to the order, and the CNC lathe 10a opens the gate to open the material 1 ).

9, the chuck portion 130, which has entered the interior of the CNC lathe 10a, is moved in the direction indicated by the second drawing of FIG. 9 so as to face the downward- And as shown in the third drawing, the rotating block 136 is rotated by 180 degrees to mount the material 1 being held on the main shaft 20. In the above description, the loading and unloading apparatus 100 of the present invention is loaded first because the loading and unloading apparatus 100 of the present invention is operated first. However, as shown in FIG. 10, when the CNC lathe 10a has the material 1a already processed The material 1a to be machined is first unloaded by the first chuck 138a facing the side and then the rotating block 136 is rotated to load the material 1 to be machined. If the material to be loaded is defective, the second chuck 138b returns to its original position.

As shown in the third drawing of FIG. 8, the chuck 130, which has received and processed the processed workpiece 1a, is lowered while stopped on the workpiece discharging unit 170 and is moved to the first chuck 138a The processed material 1a or the defective material 1b on the second chuck 138b is lowered. As shown in FIG. 11, the material discharging unit 170 automatically transfers the discharge conveyor 171 by one slit by the control of the control unit when all the five processed or bad materials are allocated, .

The chuck part 130 moves to the material supply part 160 again and is sensed by the proximity sensor 163 and then moves to the other CNC lathe 10b by asking the material 1, The unloaded material is also loaded on the discharge conveyor 171 of the workpiece discharge unit 170 in the same manner as in the CNC lathe 10a at the beginning of the above description.

As described above, the material loading and unloading apparatus 100 according to the present invention includes the CNC lathe 10 having the material to be processed inserted or processed The finished material can be discharged and processed in a large quantity. If only the material for processing is placed on the supply conveyor 161, the operation can be performed unattended.

The present invention is not limited to the configuration and operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: Loading and unloading device
110: Two-dimensional barrel 112: Horizontal rail
114: block body 116: vertical pole
130: chuck 132: fixed plate
134: body block 136: rotating block
138: chuck 140: spring
142: sensor 150: entry / exit table
160: material supply unit 161: supply conveyor
162: Encounter 163: Proximity sensor
170: Material discharge unit 172: Discharge conveyor
1: Material to be processed 1a: Finished material
1b: Defective material

Claims (7)

A two-dimensional moving table 110 disposed on the upper side of a plurality of CNC lathes 10 and moving left and right and up and down;
A chuck 130, which is selectively reversibly movable between two chucks 138 that are orthogonally intersected with each other while being coupled to the lower end of the bell 110;
A workpiece 1 and a processed workpiece 1a disposed between the plurality of CNC lathes 10 for processing are placed on an entry / exit table (not shown) which is held or placed by a reversible chuck 138 of the chuck 130 150); And
And a control unit for controlling the CNC lathes 10, the two-dimensional turning table 110, the chuck unit 130, and the entry / exit table 150,
The chuck portion 130 includes a rotation block 136 on which two reversible chucks 138 are mounted and a second block 128 on which the two dimensional dimension is coupled to the lower end of the vertical bar 116 of the barrel 110 while the rotation block 136 is mounted And a body block 134 slidably coupled to the fixed plate 132. The body block 134 is supported by a spring 140 mounted between the body block 134 and the fixed plate 132 And a sensor 142 for detecting the movement of the body block 134 is disposed between the body block 134 and the fixed plate 132. The plurality of CNC lathe- A device that automatically loads and unloads material.
delete The method according to claim 1,
The entry / exit table 150 includes a material supply unit 160 on which the workpiece 1 to be processed is mounted, a workpiece discharge unit 170 on which the processed workpiece 1a or the defective workpiece 1b is mounted, The material supplying unit 160 and the material discharging unit 170 include a supply conveyor 161 and a discharge conveyor 172 so that the respective materials are lifted up. The CNC lathe is automatically loaded and unloaded on a plurality of CNC lathe Device.
The method of claim 3,
At least one workpiece 1 is lifted up by the use of a slit conveyor and the supply conveyor 161 is provided at the outlet of the feed conveyor 161 with the workpiece 1 wrapped in the center of the workpiece conveyor 161, And a jaw (162) for aligning the CNC lathe is provided on the CNC lathe.
5. The method of claim 4,
The jaw 162 is formed in a circular shape corresponding to the outer diameter of the work 1 when the inlet has a widened shape and the central portion is worn out. And a proximity sensor 163 for detecting the proximity of the workpiece 162. The proximity sensor 163 detects the proximity sensor 163 to operate the jaw 162 so as to close the workpiece 162, Which automatically loads and unloads materials on a plurality of CNC lathes.
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